The driver is comprised of two kernel modules: mlx5_ib and mlx5_core.
This partitioning resembles what we have for mlx4, except that mlx5_ib
is the pci device driver and not mlx5_core.
mlx5_core is essentially a library that provides general functionality
that is intended to be used by other Mellanox devices that will be
introduced in the future. mlx5_ib has a similar role as any hardware
device under drivers/infiniband/hw.
Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
[ Merge in coccinelle fixes from Fengguang Wu <fengguang.wu@intel.com>.
- Roland ]
Signed-off-by: Roland Dreier <roland@purestorage.com>
S: Odd Fixes
F: drivers/media/radio/radio-miropcm20*
+Mellanox MLX5 core VPI driver
+M: Eli Cohen <eli@mellanox.com>
+L: netdev@vger.kernel.org
+L: linux-rdma@vger.kernel.org
+W: http://www.mellanox.com
+Q: http://patchwork.ozlabs.org/project/netdev/list/
+Q: http://patchwork.kernel.org/project/linux-rdma/list/
+T: git://openfabrics.org/~eli/connect-ib.git
+S: Supported
+F: drivers/net/ethernet/mellanox/mlx5/core/
+F: include/linux/mlx5/
+
+Mellanox MLX5 IB driver
+M: Eli Cohen <eli@mellanox.com>
+L: linux-rdma@vger.kernel.org
+W: http://www.mellanox.com
+Q: http://patchwork.kernel.org/project/linux-rdma/list/
+T: git://openfabrics.org/~eli/connect-ib.git
+S: Supported
+F: include/linux/mlx5/
+F: drivers/infiniband/hw/mlx5/
+
MODULE SUPPORT
M: Rusty Russell <rusty@rustcorp.com.au>
S: Maintained
source "drivers/infiniband/hw/cxgb3/Kconfig"
source "drivers/infiniband/hw/cxgb4/Kconfig"
source "drivers/infiniband/hw/mlx4/Kconfig"
+source "drivers/infiniband/hw/mlx5/Kconfig"
source "drivers/infiniband/hw/nes/Kconfig"
source "drivers/infiniband/hw/ocrdma/Kconfig"
obj-$(CONFIG_INFINIBAND_CXGB3) += hw/cxgb3/
obj-$(CONFIG_INFINIBAND_CXGB4) += hw/cxgb4/
obj-$(CONFIG_MLX4_INFINIBAND) += hw/mlx4/
+obj-$(CONFIG_MLX5_INFINIBAND) += hw/mlx5/
obj-$(CONFIG_INFINIBAND_NES) += hw/nes/
obj-$(CONFIG_INFINIBAND_OCRDMA) += hw/ocrdma/
obj-$(CONFIG_INFINIBAND_IPOIB) += ulp/ipoib/
--- /dev/null
+config MLX5_INFINIBAND
+ tristate "Mellanox Connect-IB HCA support"
+ depends on NETDEVICES && ETHERNET && PCI && X86
+ select NET_VENDOR_MELLANOX
+ select MLX5_CORE
+ ---help---
+ This driver provides low-level InfiniBand support for
+ Mellanox Connect-IB PCI Express host channel adapters (HCAs).
+ This is required to use InfiniBand protocols such as
+ IP-over-IB or SRP with these devices.
--- /dev/null
+obj-$(CONFIG_MLX5_INFINIBAND) += mlx5_ib.o
+
+mlx5_ib-y := main.o cq.o doorbell.o qp.o mem.o srq.o mr.o ah.o mad.o
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "mlx5_ib.h"
+
+struct ib_ah *create_ib_ah(struct ib_ah_attr *ah_attr,
+ struct mlx5_ib_ah *ah)
+{
+ if (ah_attr->ah_flags & IB_AH_GRH) {
+ memcpy(ah->av.rgid, &ah_attr->grh.dgid, 16);
+ ah->av.grh_gid_fl = cpu_to_be32(ah_attr->grh.flow_label |
+ (1 << 30) |
+ ah_attr->grh.sgid_index << 20);
+ ah->av.hop_limit = ah_attr->grh.hop_limit;
+ ah->av.tclass = ah_attr->grh.traffic_class;
+ }
+
+ ah->av.rlid = cpu_to_be16(ah_attr->dlid);
+ ah->av.fl_mlid = ah_attr->src_path_bits & 0x7f;
+ ah->av.stat_rate_sl = (ah_attr->static_rate << 4) | (ah_attr->sl & 0xf);
+
+ return &ah->ibah;
+}
+
+struct ib_ah *mlx5_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
+{
+ struct mlx5_ib_ah *ah;
+
+ ah = kzalloc(sizeof(*ah), GFP_ATOMIC);
+ if (!ah)
+ return ERR_PTR(-ENOMEM);
+
+ return create_ib_ah(ah_attr, ah); /* never fails */
+}
+
+int mlx5_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr)
+{
+ struct mlx5_ib_ah *ah = to_mah(ibah);
+ u32 tmp;
+
+ memset(ah_attr, 0, sizeof(*ah_attr));
+
+ tmp = be32_to_cpu(ah->av.grh_gid_fl);
+ if (tmp & (1 << 30)) {
+ ah_attr->ah_flags = IB_AH_GRH;
+ ah_attr->grh.sgid_index = (tmp >> 20) & 0xff;
+ ah_attr->grh.flow_label = tmp & 0xfffff;
+ memcpy(&ah_attr->grh.dgid, ah->av.rgid, 16);
+ ah_attr->grh.hop_limit = ah->av.hop_limit;
+ ah_attr->grh.traffic_class = ah->av.tclass;
+ }
+ ah_attr->dlid = be16_to_cpu(ah->av.rlid);
+ ah_attr->static_rate = ah->av.stat_rate_sl >> 4;
+ ah_attr->sl = ah->av.stat_rate_sl & 0xf;
+
+ return 0;
+}
+
+int mlx5_ib_destroy_ah(struct ib_ah *ah)
+{
+ kfree(to_mah(ah));
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kref.h>
+#include <rdma/ib_umem.h>
+#include "mlx5_ib.h"
+#include "user.h"
+
+static void mlx5_ib_cq_comp(struct mlx5_core_cq *cq)
+{
+ struct ib_cq *ibcq = &to_mibcq(cq)->ibcq;
+
+ ibcq->comp_handler(ibcq, ibcq->cq_context);
+}
+
+static void mlx5_ib_cq_event(struct mlx5_core_cq *mcq, enum mlx5_event type)
+{
+ struct mlx5_ib_cq *cq = container_of(mcq, struct mlx5_ib_cq, mcq);
+ struct mlx5_ib_dev *dev = to_mdev(cq->ibcq.device);
+ struct ib_cq *ibcq = &cq->ibcq;
+ struct ib_event event;
+
+ if (type != MLX5_EVENT_TYPE_CQ_ERROR) {
+ mlx5_ib_warn(dev, "Unexpected event type %d on CQ %06x\n",
+ type, mcq->cqn);
+ return;
+ }
+
+ if (ibcq->event_handler) {
+ event.device = &dev->ib_dev;
+ event.event = IB_EVENT_CQ_ERR;
+ event.element.cq = ibcq;
+ ibcq->event_handler(&event, ibcq->cq_context);
+ }
+}
+
+static void *get_cqe_from_buf(struct mlx5_ib_cq_buf *buf, int n, int size)
+{
+ return mlx5_buf_offset(&buf->buf, n * size);
+}
+
+static void *get_cqe(struct mlx5_ib_cq *cq, int n)
+{
+ return get_cqe_from_buf(&cq->buf, n, cq->mcq.cqe_sz);
+}
+
+static void *get_sw_cqe(struct mlx5_ib_cq *cq, int n)
+{
+ void *cqe = get_cqe(cq, n & cq->ibcq.cqe);
+ struct mlx5_cqe64 *cqe64;
+
+ cqe64 = (cq->mcq.cqe_sz == 64) ? cqe : cqe + 64;
+ return ((cqe64->op_own & MLX5_CQE_OWNER_MASK) ^
+ !!(n & (cq->ibcq.cqe + 1))) ? NULL : cqe;
+}
+
+static void *next_cqe_sw(struct mlx5_ib_cq *cq)
+{
+ return get_sw_cqe(cq, cq->mcq.cons_index);
+}
+
+static enum ib_wc_opcode get_umr_comp(struct mlx5_ib_wq *wq, int idx)
+{
+ switch (wq->wr_data[idx]) {
+ case MLX5_IB_WR_UMR:
+ return 0;
+
+ case IB_WR_LOCAL_INV:
+ return IB_WC_LOCAL_INV;
+
+ case IB_WR_FAST_REG_MR:
+ return IB_WC_FAST_REG_MR;
+
+ default:
+ pr_warn("unknown completion status\n");
+ return 0;
+ }
+}
+
+static void handle_good_req(struct ib_wc *wc, struct mlx5_cqe64 *cqe,
+ struct mlx5_ib_wq *wq, int idx)
+{
+ wc->wc_flags = 0;
+ switch (be32_to_cpu(cqe->sop_drop_qpn) >> 24) {
+ case MLX5_OPCODE_RDMA_WRITE_IMM:
+ wc->wc_flags |= IB_WC_WITH_IMM;
+ case MLX5_OPCODE_RDMA_WRITE:
+ wc->opcode = IB_WC_RDMA_WRITE;
+ break;
+ case MLX5_OPCODE_SEND_IMM:
+ wc->wc_flags |= IB_WC_WITH_IMM;
+ case MLX5_OPCODE_SEND:
+ case MLX5_OPCODE_SEND_INVAL:
+ wc->opcode = IB_WC_SEND;
+ break;
+ case MLX5_OPCODE_RDMA_READ:
+ wc->opcode = IB_WC_RDMA_READ;
+ wc->byte_len = be32_to_cpu(cqe->byte_cnt);
+ break;
+ case MLX5_OPCODE_ATOMIC_CS:
+ wc->opcode = IB_WC_COMP_SWAP;
+ wc->byte_len = 8;
+ break;
+ case MLX5_OPCODE_ATOMIC_FA:
+ wc->opcode = IB_WC_FETCH_ADD;
+ wc->byte_len = 8;
+ break;
+ case MLX5_OPCODE_ATOMIC_MASKED_CS:
+ wc->opcode = IB_WC_MASKED_COMP_SWAP;
+ wc->byte_len = 8;
+ break;
+ case MLX5_OPCODE_ATOMIC_MASKED_FA:
+ wc->opcode = IB_WC_MASKED_FETCH_ADD;
+ wc->byte_len = 8;
+ break;
+ case MLX5_OPCODE_BIND_MW:
+ wc->opcode = IB_WC_BIND_MW;
+ break;
+ case MLX5_OPCODE_UMR:
+ wc->opcode = get_umr_comp(wq, idx);
+ break;
+ }
+}
+
+enum {
+ MLX5_GRH_IN_BUFFER = 1,
+ MLX5_GRH_IN_CQE = 2,
+};
+
+static void handle_responder(struct ib_wc *wc, struct mlx5_cqe64 *cqe,
+ struct mlx5_ib_qp *qp)
+{
+ struct mlx5_ib_dev *dev = to_mdev(qp->ibqp.device);
+ struct mlx5_ib_srq *srq;
+ struct mlx5_ib_wq *wq;
+ u16 wqe_ctr;
+ u8 g;
+
+ if (qp->ibqp.srq || qp->ibqp.xrcd) {
+ struct mlx5_core_srq *msrq = NULL;
+
+ if (qp->ibqp.xrcd) {
+ msrq = mlx5_core_get_srq(&dev->mdev,
+ be32_to_cpu(cqe->srqn));
+ srq = to_mibsrq(msrq);
+ } else {
+ srq = to_msrq(qp->ibqp.srq);
+ }
+ if (srq) {
+ wqe_ctr = be16_to_cpu(cqe->wqe_counter);
+ wc->wr_id = srq->wrid[wqe_ctr];
+ mlx5_ib_free_srq_wqe(srq, wqe_ctr);
+ if (msrq && atomic_dec_and_test(&msrq->refcount))
+ complete(&msrq->free);
+ }
+ } else {
+ wq = &qp->rq;
+ wc->wr_id = wq->wrid[wq->tail & (wq->wqe_cnt - 1)];
+ ++wq->tail;
+ }
+ wc->byte_len = be32_to_cpu(cqe->byte_cnt);
+
+ switch (cqe->op_own >> 4) {
+ case MLX5_CQE_RESP_WR_IMM:
+ wc->opcode = IB_WC_RECV_RDMA_WITH_IMM;
+ wc->wc_flags = IB_WC_WITH_IMM;
+ wc->ex.imm_data = cqe->imm_inval_pkey;
+ break;
+ case MLX5_CQE_RESP_SEND:
+ wc->opcode = IB_WC_RECV;
+ wc->wc_flags = 0;
+ break;
+ case MLX5_CQE_RESP_SEND_IMM:
+ wc->opcode = IB_WC_RECV;
+ wc->wc_flags = IB_WC_WITH_IMM;
+ wc->ex.imm_data = cqe->imm_inval_pkey;
+ break;
+ case MLX5_CQE_RESP_SEND_INV:
+ wc->opcode = IB_WC_RECV;
+ wc->wc_flags = IB_WC_WITH_INVALIDATE;
+ wc->ex.invalidate_rkey = be32_to_cpu(cqe->imm_inval_pkey);
+ break;
+ }
+ wc->slid = be16_to_cpu(cqe->slid);
+ wc->sl = (be32_to_cpu(cqe->flags_rqpn) >> 24) & 0xf;
+ wc->src_qp = be32_to_cpu(cqe->flags_rqpn) & 0xffffff;
+ wc->dlid_path_bits = cqe->ml_path;
+ g = (be32_to_cpu(cqe->flags_rqpn) >> 28) & 3;
+ wc->wc_flags |= g ? IB_WC_GRH : 0;
+ wc->pkey_index = be32_to_cpu(cqe->imm_inval_pkey) & 0xffff;
+}
+
+static void dump_cqe(struct mlx5_ib_dev *dev, struct mlx5_err_cqe *cqe)
+{
+ __be32 *p = (__be32 *)cqe;
+ int i;
+
+ mlx5_ib_warn(dev, "dump error cqe\n");
+ for (i = 0; i < sizeof(*cqe) / 16; i++, p += 4)
+ pr_info("%08x %08x %08x %08x\n", be32_to_cpu(p[0]),
+ be32_to_cpu(p[1]), be32_to_cpu(p[2]),
+ be32_to_cpu(p[3]));
+}
+
+static void mlx5_handle_error_cqe(struct mlx5_ib_dev *dev,
+ struct mlx5_err_cqe *cqe,
+ struct ib_wc *wc)
+{
+ int dump = 1;
+
+ switch (cqe->syndrome) {
+ case MLX5_CQE_SYNDROME_LOCAL_LENGTH_ERR:
+ wc->status = IB_WC_LOC_LEN_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_LOCAL_QP_OP_ERR:
+ wc->status = IB_WC_LOC_QP_OP_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_LOCAL_PROT_ERR:
+ wc->status = IB_WC_LOC_PROT_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_WR_FLUSH_ERR:
+ dump = 0;
+ wc->status = IB_WC_WR_FLUSH_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_MW_BIND_ERR:
+ wc->status = IB_WC_MW_BIND_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_BAD_RESP_ERR:
+ wc->status = IB_WC_BAD_RESP_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_LOCAL_ACCESS_ERR:
+ wc->status = IB_WC_LOC_ACCESS_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR:
+ wc->status = IB_WC_REM_INV_REQ_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_REMOTE_ACCESS_ERR:
+ wc->status = IB_WC_REM_ACCESS_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_REMOTE_OP_ERR:
+ wc->status = IB_WC_REM_OP_ERR;
+ break;
+ case MLX5_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR:
+ wc->status = IB_WC_RETRY_EXC_ERR;
+ dump = 0;
+ break;
+ case MLX5_CQE_SYNDROME_RNR_RETRY_EXC_ERR:
+ wc->status = IB_WC_RNR_RETRY_EXC_ERR;
+ dump = 0;
+ break;
+ case MLX5_CQE_SYNDROME_REMOTE_ABORTED_ERR:
+ wc->status = IB_WC_REM_ABORT_ERR;
+ break;
+ default:
+ wc->status = IB_WC_GENERAL_ERR;
+ break;
+ }
+
+ wc->vendor_err = cqe->vendor_err_synd;
+ if (dump)
+ dump_cqe(dev, cqe);
+}
+
+static int is_atomic_response(struct mlx5_ib_qp *qp, uint16_t idx)
+{
+ /* TBD: waiting decision
+ */
+ return 0;
+}
+
+static void *mlx5_get_atomic_laddr(struct mlx5_ib_qp *qp, uint16_t idx)
+{
+ struct mlx5_wqe_data_seg *dpseg;
+ void *addr;
+
+ dpseg = mlx5_get_send_wqe(qp, idx) + sizeof(struct mlx5_wqe_ctrl_seg) +
+ sizeof(struct mlx5_wqe_raddr_seg) +
+ sizeof(struct mlx5_wqe_atomic_seg);
+ addr = (void *)(unsigned long)be64_to_cpu(dpseg->addr);
+ return addr;
+}
+
+static void handle_atomic(struct mlx5_ib_qp *qp, struct mlx5_cqe64 *cqe64,
+ uint16_t idx)
+{
+ void *addr;
+ int byte_count;
+ int i;
+
+ if (!is_atomic_response(qp, idx))
+ return;
+
+ byte_count = be32_to_cpu(cqe64->byte_cnt);
+ addr = mlx5_get_atomic_laddr(qp, idx);
+
+ if (byte_count == 4) {
+ *(uint32_t *)addr = be32_to_cpu(*((__be32 *)addr));
+ } else {
+ for (i = 0; i < byte_count; i += 8) {
+ *(uint64_t *)addr = be64_to_cpu(*((__be64 *)addr));
+ addr += 8;
+ }
+ }
+
+ return;
+}
+
+static void handle_atomics(struct mlx5_ib_qp *qp, struct mlx5_cqe64 *cqe64,
+ u16 tail, u16 head)
+{
+ int idx;
+
+ do {
+ idx = tail & (qp->sq.wqe_cnt - 1);
+ handle_atomic(qp, cqe64, idx);
+ if (idx == head)
+ break;
+
+ tail = qp->sq.w_list[idx].next;
+ } while (1);
+ tail = qp->sq.w_list[idx].next;
+ qp->sq.last_poll = tail;
+}
+
+static int mlx5_poll_one(struct mlx5_ib_cq *cq,
+ struct mlx5_ib_qp **cur_qp,
+ struct ib_wc *wc)
+{
+ struct mlx5_ib_dev *dev = to_mdev(cq->ibcq.device);
+ struct mlx5_err_cqe *err_cqe;
+ struct mlx5_cqe64 *cqe64;
+ struct mlx5_core_qp *mqp;
+ struct mlx5_ib_wq *wq;
+ uint8_t opcode;
+ uint32_t qpn;
+ u16 wqe_ctr;
+ void *cqe;
+ int idx;
+
+ cqe = next_cqe_sw(cq);
+ if (!cqe)
+ return -EAGAIN;
+
+ cqe64 = (cq->mcq.cqe_sz == 64) ? cqe : cqe + 64;
+
+ ++cq->mcq.cons_index;
+
+ /* Make sure we read CQ entry contents after we've checked the
+ * ownership bit.
+ */
+ rmb();
+
+ /* TBD: resize CQ */
+
+ qpn = ntohl(cqe64->sop_drop_qpn) & 0xffffff;
+ if (!*cur_qp || (qpn != (*cur_qp)->ibqp.qp_num)) {
+ /* We do not have to take the QP table lock here,
+ * because CQs will be locked while QPs are removed
+ * from the table.
+ */
+ mqp = __mlx5_qp_lookup(&dev->mdev, qpn);
+ if (unlikely(!mqp)) {
+ mlx5_ib_warn(dev, "CQE@CQ %06x for unknown QPN %6x\n",
+ cq->mcq.cqn, qpn);
+ return -EINVAL;
+ }
+
+ *cur_qp = to_mibqp(mqp);
+ }
+
+ wc->qp = &(*cur_qp)->ibqp;
+ opcode = cqe64->op_own >> 4;
+ switch (opcode) {
+ case MLX5_CQE_REQ:
+ wq = &(*cur_qp)->sq;
+ wqe_ctr = be16_to_cpu(cqe64->wqe_counter);
+ idx = wqe_ctr & (wq->wqe_cnt - 1);
+ handle_good_req(wc, cqe64, wq, idx);
+ handle_atomics(*cur_qp, cqe64, wq->last_poll, idx);
+ wc->wr_id = wq->wrid[idx];
+ wq->tail = wq->wqe_head[idx] + 1;
+ wc->status = IB_WC_SUCCESS;
+ break;
+ case MLX5_CQE_RESP_WR_IMM:
+ case MLX5_CQE_RESP_SEND:
+ case MLX5_CQE_RESP_SEND_IMM:
+ case MLX5_CQE_RESP_SEND_INV:
+ handle_responder(wc, cqe64, *cur_qp);
+ wc->status = IB_WC_SUCCESS;
+ break;
+ case MLX5_CQE_RESIZE_CQ:
+ break;
+ case MLX5_CQE_REQ_ERR:
+ case MLX5_CQE_RESP_ERR:
+ err_cqe = (struct mlx5_err_cqe *)cqe64;
+ mlx5_handle_error_cqe(dev, err_cqe, wc);
+ mlx5_ib_dbg(dev, "%s error cqe on cqn 0x%x:\n",
+ opcode == MLX5_CQE_REQ_ERR ?
+ "Requestor" : "Responder", cq->mcq.cqn);
+ mlx5_ib_dbg(dev, "syndrome 0x%x, vendor syndrome 0x%x\n",
+ err_cqe->syndrome, err_cqe->vendor_err_synd);
+ if (opcode == MLX5_CQE_REQ_ERR) {
+ wq = &(*cur_qp)->sq;
+ wqe_ctr = be16_to_cpu(cqe64->wqe_counter);
+ idx = wqe_ctr & (wq->wqe_cnt - 1);
+ wc->wr_id = wq->wrid[idx];
+ wq->tail = wq->wqe_head[idx] + 1;
+ } else {
+ struct mlx5_ib_srq *srq;
+
+ if ((*cur_qp)->ibqp.srq) {
+ srq = to_msrq((*cur_qp)->ibqp.srq);
+ wqe_ctr = be16_to_cpu(cqe64->wqe_counter);
+ wc->wr_id = srq->wrid[wqe_ctr];
+ mlx5_ib_free_srq_wqe(srq, wqe_ctr);
+ } else {
+ wq = &(*cur_qp)->rq;
+ wc->wr_id = wq->wrid[wq->tail & (wq->wqe_cnt - 1)];
+ ++wq->tail;
+ }
+ }
+ break;
+ }
+
+ return 0;
+}
+
+int mlx5_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
+{
+ struct mlx5_ib_cq *cq = to_mcq(ibcq);
+ struct mlx5_ib_qp *cur_qp = NULL;
+ unsigned long flags;
+ int npolled;
+ int err = 0;
+
+ spin_lock_irqsave(&cq->lock, flags);
+
+ for (npolled = 0; npolled < num_entries; npolled++) {
+ err = mlx5_poll_one(cq, &cur_qp, wc + npolled);
+ if (err)
+ break;
+ }
+
+ if (npolled)
+ mlx5_cq_set_ci(&cq->mcq);
+
+ spin_unlock_irqrestore(&cq->lock, flags);
+
+ if (err == 0 || err == -EAGAIN)
+ return npolled;
+ else
+ return err;
+}
+
+int mlx5_ib_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
+{
+ mlx5_cq_arm(&to_mcq(ibcq)->mcq,
+ (flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED ?
+ MLX5_CQ_DB_REQ_NOT_SOL : MLX5_CQ_DB_REQ_NOT,
+ to_mdev(ibcq->device)->mdev.priv.uuari.uars[0].map,
+ MLX5_GET_DOORBELL_LOCK(&to_mdev(ibcq->device)->mdev.priv.cq_uar_lock));
+
+ return 0;
+}
+
+static int alloc_cq_buf(struct mlx5_ib_dev *dev, struct mlx5_ib_cq_buf *buf,
+ int nent, int cqe_size)
+{
+ int err;
+
+ err = mlx5_buf_alloc(&dev->mdev, nent * cqe_size,
+ PAGE_SIZE * 2, &buf->buf);
+ if (err)
+ return err;
+
+ buf->cqe_size = cqe_size;
+
+ return 0;
+}
+
+static void free_cq_buf(struct mlx5_ib_dev *dev, struct mlx5_ib_cq_buf *buf)
+{
+ mlx5_buf_free(&dev->mdev, &buf->buf);
+}
+
+static int create_cq_user(struct mlx5_ib_dev *dev, struct ib_udata *udata,
+ struct ib_ucontext *context, struct mlx5_ib_cq *cq,
+ int entries, struct mlx5_create_cq_mbox_in **cqb,
+ int *cqe_size, int *index, int *inlen)
+{
+ struct mlx5_ib_create_cq ucmd;
+ int page_shift;
+ int npages;
+ int ncont;
+ int err;
+
+ if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd)))
+ return -EFAULT;
+
+ if (ucmd.cqe_size != 64 && ucmd.cqe_size != 128)
+ return -EINVAL;
+
+ *cqe_size = ucmd.cqe_size;
+
+ cq->buf.umem = ib_umem_get(context, ucmd.buf_addr,
+ entries * ucmd.cqe_size,
+ IB_ACCESS_LOCAL_WRITE, 1);
+ if (IS_ERR(cq->buf.umem)) {
+ err = PTR_ERR(cq->buf.umem);
+ return err;
+ }
+
+ err = mlx5_ib_db_map_user(to_mucontext(context), ucmd.db_addr,
+ &cq->db);
+ if (err)
+ goto err_umem;
+
+ mlx5_ib_cont_pages(cq->buf.umem, ucmd.buf_addr, &npages, &page_shift,
+ &ncont, NULL);
+ mlx5_ib_dbg(dev, "addr 0x%llx, size %u, npages %d, page_shift %d, ncont %d\n",
+ ucmd.buf_addr, entries * ucmd.cqe_size, npages, page_shift, ncont);
+
+ *inlen = sizeof(**cqb) + sizeof(*(*cqb)->pas) * ncont;
+ *cqb = mlx5_vzalloc(*inlen);
+ if (!*cqb) {
+ err = -ENOMEM;
+ goto err_db;
+ }
+ mlx5_ib_populate_pas(dev, cq->buf.umem, page_shift, (*cqb)->pas, 0);
+ (*cqb)->ctx.log_pg_sz = page_shift - PAGE_SHIFT;
+
+ *index = to_mucontext(context)->uuari.uars[0].index;
+
+ return 0;
+
+err_db:
+ mlx5_ib_db_unmap_user(to_mucontext(context), &cq->db);
+
+err_umem:
+ ib_umem_release(cq->buf.umem);
+ return err;
+}
+
+static void destroy_cq_user(struct mlx5_ib_cq *cq, struct ib_ucontext *context)
+{
+ mlx5_ib_db_unmap_user(to_mucontext(context), &cq->db);
+ ib_umem_release(cq->buf.umem);
+}
+
+static void init_cq_buf(struct mlx5_ib_cq *cq, int nent)
+{
+ int i;
+ void *cqe;
+ struct mlx5_cqe64 *cqe64;
+
+ for (i = 0; i < nent; i++) {
+ cqe = get_cqe(cq, i);
+ cqe64 = (cq->buf.cqe_size == 64) ? cqe : cqe + 64;
+ cqe64->op_own = 0xf1;
+ }
+}
+
+static int create_cq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq,
+ int entries, int cqe_size,
+ struct mlx5_create_cq_mbox_in **cqb,
+ int *index, int *inlen)
+{
+ int err;
+
+ err = mlx5_db_alloc(&dev->mdev, &cq->db);
+ if (err)
+ return err;
+
+ cq->mcq.set_ci_db = cq->db.db;
+ cq->mcq.arm_db = cq->db.db + 1;
+ *cq->mcq.set_ci_db = 0;
+ *cq->mcq.arm_db = 0;
+ cq->mcq.cqe_sz = cqe_size;
+
+ err = alloc_cq_buf(dev, &cq->buf, entries, cqe_size);
+ if (err)
+ goto err_db;
+
+ init_cq_buf(cq, entries);
+
+ *inlen = sizeof(**cqb) + sizeof(*(*cqb)->pas) * cq->buf.buf.npages;
+ *cqb = mlx5_vzalloc(*inlen);
+ if (!*cqb) {
+ err = -ENOMEM;
+ goto err_buf;
+ }
+ mlx5_fill_page_array(&cq->buf.buf, (*cqb)->pas);
+
+ (*cqb)->ctx.log_pg_sz = cq->buf.buf.page_shift - PAGE_SHIFT;
+ *index = dev->mdev.priv.uuari.uars[0].index;
+
+ return 0;
+
+err_buf:
+ free_cq_buf(dev, &cq->buf);
+
+err_db:
+ mlx5_db_free(&dev->mdev, &cq->db);
+ return err;
+}
+
+static void destroy_cq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq)
+{
+ free_cq_buf(dev, &cq->buf);
+ mlx5_db_free(&dev->mdev, &cq->db);
+}
+
+struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev, int entries,
+ int vector, struct ib_ucontext *context,
+ struct ib_udata *udata)
+{
+ struct mlx5_create_cq_mbox_in *cqb = NULL;
+ struct mlx5_ib_dev *dev = to_mdev(ibdev);
+ struct mlx5_ib_cq *cq;
+ int uninitialized_var(index);
+ int uninitialized_var(inlen);
+ int cqe_size;
+ int irqn;
+ int eqn;
+ int err;
+
+ entries = roundup_pow_of_two(entries + 1);
+ if (entries < 1 || entries > dev->mdev.caps.max_cqes)
+ return ERR_PTR(-EINVAL);
+
+ cq = kzalloc(sizeof(*cq), GFP_KERNEL);
+ if (!cq)
+ return ERR_PTR(-ENOMEM);
+
+ cq->ibcq.cqe = entries - 1;
+ mutex_init(&cq->resize_mutex);
+ spin_lock_init(&cq->lock);
+ cq->resize_buf = NULL;
+ cq->resize_umem = NULL;
+
+ if (context) {
+ err = create_cq_user(dev, udata, context, cq, entries,
+ &cqb, &cqe_size, &index, &inlen);
+ if (err)
+ goto err_create;
+ } else {
+ /* for now choose 64 bytes till we have a proper interface */
+ cqe_size = 64;
+ err = create_cq_kernel(dev, cq, entries, cqe_size, &cqb,
+ &index, &inlen);
+ if (err)
+ goto err_create;
+ }
+
+ cq->cqe_size = cqe_size;
+ cqb->ctx.cqe_sz_flags = cqe_sz_to_mlx_sz(cqe_size) << 5;
+ cqb->ctx.log_sz_usr_page = cpu_to_be32((ilog2(entries) << 24) | index);
+ err = mlx5_vector2eqn(dev, vector, &eqn, &irqn);
+ if (err)
+ goto err_cqb;
+
+ cqb->ctx.c_eqn = cpu_to_be16(eqn);
+ cqb->ctx.db_record_addr = cpu_to_be64(cq->db.dma);
+
+ err = mlx5_core_create_cq(&dev->mdev, &cq->mcq, cqb, inlen);
+ if (err)
+ goto err_cqb;
+
+ mlx5_ib_dbg(dev, "cqn 0x%x\n", cq->mcq.cqn);
+ cq->mcq.irqn = irqn;
+ cq->mcq.comp = mlx5_ib_cq_comp;
+ cq->mcq.event = mlx5_ib_cq_event;
+
+ if (context)
+ if (ib_copy_to_udata(udata, &cq->mcq.cqn, sizeof(__u32))) {
+ err = -EFAULT;
+ goto err_cmd;
+ }
+
+
+ mlx5_vfree(cqb);
+ return &cq->ibcq;
+
+err_cmd:
+ mlx5_core_destroy_cq(&dev->mdev, &cq->mcq);
+
+err_cqb:
+ mlx5_vfree(cqb);
+ if (context)
+ destroy_cq_user(cq, context);
+ else
+ destroy_cq_kernel(dev, cq);
+
+err_create:
+ kfree(cq);
+
+ return ERR_PTR(err);
+}
+
+
+int mlx5_ib_destroy_cq(struct ib_cq *cq)
+{
+ struct mlx5_ib_dev *dev = to_mdev(cq->device);
+ struct mlx5_ib_cq *mcq = to_mcq(cq);
+ struct ib_ucontext *context = NULL;
+
+ if (cq->uobject)
+ context = cq->uobject->context;
+
+ mlx5_core_destroy_cq(&dev->mdev, &mcq->mcq);
+ if (context)
+ destroy_cq_user(mcq, context);
+ else
+ destroy_cq_kernel(dev, mcq);
+
+ kfree(mcq);
+
+ return 0;
+}
+
+static int is_equal_rsn(struct mlx5_cqe64 *cqe64, struct mlx5_ib_srq *srq,
+ u32 rsn)
+{
+ u32 lrsn;
+
+ if (srq)
+ lrsn = be32_to_cpu(cqe64->srqn) & 0xffffff;
+ else
+ lrsn = be32_to_cpu(cqe64->sop_drop_qpn) & 0xffffff;
+
+ return rsn == lrsn;
+}
+
+void __mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 rsn, struct mlx5_ib_srq *srq)
+{
+ struct mlx5_cqe64 *cqe64, *dest64;
+ void *cqe, *dest;
+ u32 prod_index;
+ int nfreed = 0;
+ u8 owner_bit;
+
+ if (!cq)
+ return;
+
+ /* First we need to find the current producer index, so we
+ * know where to start cleaning from. It doesn't matter if HW
+ * adds new entries after this loop -- the QP we're worried
+ * about is already in RESET, so the new entries won't come
+ * from our QP and therefore don't need to be checked.
+ */
+ for (prod_index = cq->mcq.cons_index; get_sw_cqe(cq, prod_index); prod_index++)
+ if (prod_index == cq->mcq.cons_index + cq->ibcq.cqe)
+ break;
+
+ /* Now sweep backwards through the CQ, removing CQ entries
+ * that match our QP by copying older entries on top of them.
+ */
+ while ((int) --prod_index - (int) cq->mcq.cons_index >= 0) {
+ cqe = get_cqe(cq, prod_index & cq->ibcq.cqe);
+ cqe64 = (cq->mcq.cqe_sz == 64) ? cqe : cqe + 64;
+ if (is_equal_rsn(cqe64, srq, rsn)) {
+ if (srq)
+ mlx5_ib_free_srq_wqe(srq, be16_to_cpu(cqe64->wqe_counter));
+ ++nfreed;
+ } else if (nfreed) {
+ dest = get_cqe(cq, (prod_index + nfreed) & cq->ibcq.cqe);
+ dest64 = (cq->mcq.cqe_sz == 64) ? dest : dest + 64;
+ owner_bit = dest64->op_own & MLX5_CQE_OWNER_MASK;
+ memcpy(dest, cqe, cq->mcq.cqe_sz);
+ dest64->op_own = owner_bit |
+ (dest64->op_own & ~MLX5_CQE_OWNER_MASK);
+ }
+ }
+
+ if (nfreed) {
+ cq->mcq.cons_index += nfreed;
+ /* Make sure update of buffer contents is done before
+ * updating consumer index.
+ */
+ wmb();
+ mlx5_cq_set_ci(&cq->mcq);
+ }
+}
+
+void mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 qpn, struct mlx5_ib_srq *srq)
+{
+ if (!cq)
+ return;
+
+ spin_lock_irq(&cq->lock);
+ __mlx5_ib_cq_clean(cq, qpn, srq);
+ spin_unlock_irq(&cq->lock);
+}
+
+int mlx5_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period)
+{
+ return -ENOSYS;
+}
+
+int mlx5_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
+{
+ return -ENOSYS;
+}
+
+int mlx5_ib_get_cqe_size(struct mlx5_ib_dev *dev, struct ib_cq *ibcq)
+{
+ struct mlx5_ib_cq *cq;
+
+ if (!ibcq)
+ return 128;
+
+ cq = to_mcq(ibcq);
+ return cq->cqe_size;
+}
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kref.h>
+#include <linux/slab.h>
+#include <rdma/ib_umem.h>
+
+#include "mlx5_ib.h"
+
+struct mlx5_ib_user_db_page {
+ struct list_head list;
+ struct ib_umem *umem;
+ unsigned long user_virt;
+ int refcnt;
+};
+
+int mlx5_ib_db_map_user(struct mlx5_ib_ucontext *context, unsigned long virt,
+ struct mlx5_db *db)
+{
+ struct mlx5_ib_user_db_page *page;
+ struct ib_umem_chunk *chunk;
+ int err = 0;
+
+ mutex_lock(&context->db_page_mutex);
+
+ list_for_each_entry(page, &context->db_page_list, list)
+ if (page->user_virt == (virt & PAGE_MASK))
+ goto found;
+
+ page = kmalloc(sizeof(*page), GFP_KERNEL);
+ if (!page) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ page->user_virt = (virt & PAGE_MASK);
+ page->refcnt = 0;
+ page->umem = ib_umem_get(&context->ibucontext, virt & PAGE_MASK,
+ PAGE_SIZE, 0, 0);
+ if (IS_ERR(page->umem)) {
+ err = PTR_ERR(page->umem);
+ kfree(page);
+ goto out;
+ }
+
+ list_add(&page->list, &context->db_page_list);
+
+found:
+ chunk = list_entry(page->umem->chunk_list.next, struct ib_umem_chunk, list);
+ db->dma = sg_dma_address(chunk->page_list) + (virt & ~PAGE_MASK);
+ db->u.user_page = page;
+ ++page->refcnt;
+
+out:
+ mutex_unlock(&context->db_page_mutex);
+
+ return err;
+}
+
+void mlx5_ib_db_unmap_user(struct mlx5_ib_ucontext *context, struct mlx5_db *db)
+{
+ mutex_lock(&context->db_page_mutex);
+
+ if (!--db->u.user_page->refcnt) {
+ list_del(&db->u.user_page->list);
+ ib_umem_release(db->u.user_page->umem);
+ kfree(db->u.user_page);
+ }
+
+ mutex_unlock(&context->db_page_mutex);
+}
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/mlx5/cmd.h>
+#include <rdma/ib_mad.h>
+#include <rdma/ib_smi.h>
+#include "mlx5_ib.h"
+
+enum {
+ MLX5_IB_VENDOR_CLASS1 = 0x9,
+ MLX5_IB_VENDOR_CLASS2 = 0xa
+};
+
+int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey, int ignore_bkey,
+ int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
+ void *in_mad, void *response_mad)
+{
+ u8 op_modifier = 0;
+
+ /* Key check traps can't be generated unless we have in_wc to
+ * tell us where to send the trap.
+ */
+ if (ignore_mkey || !in_wc)
+ op_modifier |= 0x1;
+ if (ignore_bkey || !in_wc)
+ op_modifier |= 0x2;
+
+ return mlx5_core_mad_ifc(&dev->mdev, in_mad, response_mad, op_modifier, port);
+}
+
+int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
+ struct ib_wc *in_wc, struct ib_grh *in_grh,
+ struct ib_mad *in_mad, struct ib_mad *out_mad)
+{
+ u16 slid;
+ int err;
+
+ slid = in_wc ? in_wc->slid : be16_to_cpu(IB_LID_PERMISSIVE);
+
+ if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP && slid == 0)
+ return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
+
+ if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED ||
+ in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
+ if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET &&
+ in_mad->mad_hdr.method != IB_MGMT_METHOD_SET &&
+ in_mad->mad_hdr.method != IB_MGMT_METHOD_TRAP_REPRESS)
+ return IB_MAD_RESULT_SUCCESS;
+
+ /* Don't process SMInfo queries -- the SMA can't handle them.
+ */
+ if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO)
+ return IB_MAD_RESULT_SUCCESS;
+ } else if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT ||
+ in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS1 ||
+ in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS2 ||
+ in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_CONG_MGMT) {
+ if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET &&
+ in_mad->mad_hdr.method != IB_MGMT_METHOD_SET)
+ return IB_MAD_RESULT_SUCCESS;
+ } else {
+ return IB_MAD_RESULT_SUCCESS;
+ }
+
+ err = mlx5_MAD_IFC(to_mdev(ibdev),
+ mad_flags & IB_MAD_IGNORE_MKEY,
+ mad_flags & IB_MAD_IGNORE_BKEY,
+ port_num, in_wc, in_grh, in_mad, out_mad);
+ if (err)
+ return IB_MAD_RESULT_FAILURE;
+
+ /* set return bit in status of directed route responses */
+ if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
+ out_mad->mad_hdr.status |= cpu_to_be16(1 << 15);
+
+ if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS)
+ /* no response for trap repress */
+ return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
+
+ return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
+}
+
+int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port)
+{
+ struct ib_smp *in_mad = NULL;
+ struct ib_smp *out_mad = NULL;
+ int err = -ENOMEM;
+ u16 packet_error;
+
+ in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
+ out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
+ if (!in_mad || !out_mad)
+ goto out;
+
+ init_query_mad(in_mad);
+ in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
+ in_mad->attr_mod = cpu_to_be32(port);
+
+ err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
+
+ packet_error = be16_to_cpu(out_mad->status);
+
+ dev->mdev.caps.ext_port_cap[port - 1] = (!err && !packet_error) ?
+ MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0;
+
+out:
+ kfree(in_mad);
+ kfree(out_mad);
+ return err;
+}
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <asm-generic/kmap_types.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <linux/io-mapping.h>
+#include <linux/sched.h>
+#include <rdma/ib_user_verbs.h>
+#include <rdma/ib_smi.h>
+#include <rdma/ib_umem.h>
+#include "user.h"
+#include "mlx5_ib.h"
+
+#define DRIVER_NAME "mlx5_ib"
+#define DRIVER_VERSION "1.0"
+#define DRIVER_RELDATE "June 2013"
+
+MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>");
+MODULE_DESCRIPTION("Mellanox Connect-IB HCA IB driver");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_VERSION(DRIVER_VERSION);
+
+static int prof_sel = 2;
+module_param_named(prof_sel, prof_sel, int, 0444);
+MODULE_PARM_DESC(prof_sel, "profile selector. Valid range 0 - 2");
+
+static char mlx5_version[] =
+ DRIVER_NAME ": Mellanox Connect-IB Infiniband driver v"
+ DRIVER_VERSION " (" DRIVER_RELDATE ")\n";
+
+struct mlx5_profile profile[] = {
+ [0] = {
+ .mask = 0,
+ },
+ [1] = {
+ .mask = MLX5_PROF_MASK_QP_SIZE,
+ .log_max_qp = 12,
+ },
+ [2] = {
+ .mask = MLX5_PROF_MASK_QP_SIZE |
+ MLX5_PROF_MASK_MR_CACHE,
+ .log_max_qp = 17,
+ .mr_cache[0] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[1] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[2] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[3] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[4] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[5] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[6] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[7] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[8] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[9] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[10] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[11] = {
+ .size = 500,
+ .limit = 250
+ },
+ .mr_cache[12] = {
+ .size = 64,
+ .limit = 32
+ },
+ .mr_cache[13] = {
+ .size = 32,
+ .limit = 16
+ },
+ .mr_cache[14] = {
+ .size = 16,
+ .limit = 8
+ },
+ .mr_cache[15] = {
+ .size = 8,
+ .limit = 4
+ },
+ },
+};
+
+int mlx5_vector2eqn(struct mlx5_ib_dev *dev, int vector, int *eqn, int *irqn)
+{
+ struct mlx5_eq_table *table = &dev->mdev.priv.eq_table;
+ struct mlx5_eq *eq, *n;
+ int err = -ENOENT;
+
+ spin_lock(&table->lock);
+ list_for_each_entry_safe(eq, n, &dev->eqs_list, list) {
+ if (eq->index == vector) {
+ *eqn = eq->eqn;
+ *irqn = eq->irqn;
+ err = 0;
+ break;
+ }
+ }
+ spin_unlock(&table->lock);
+
+ return err;
+}
+
+static int alloc_comp_eqs(struct mlx5_ib_dev *dev)
+{
+ struct mlx5_eq_table *table = &dev->mdev.priv.eq_table;
+ struct mlx5_eq *eq, *n;
+ int ncomp_vec;
+ int nent;
+ int err;
+ int i;
+
+ INIT_LIST_HEAD(&dev->eqs_list);
+ ncomp_vec = table->num_comp_vectors;
+ nent = MLX5_COMP_EQ_SIZE;
+ for (i = 0; i < ncomp_vec; i++) {
+ eq = kzalloc(sizeof(*eq), GFP_KERNEL);
+ if (!eq) {
+ err = -ENOMEM;
+ goto clean;
+ }
+
+ snprintf(eq->name, MLX5_MAX_EQ_NAME, "mlx5_comp%d", i);
+ err = mlx5_create_map_eq(&dev->mdev, eq,
+ i + MLX5_EQ_VEC_COMP_BASE, nent, 0,
+ eq->name,
+ &dev->mdev.priv.uuari.uars[0]);
+ if (err) {
+ kfree(eq);
+ goto clean;
+ }
+ mlx5_ib_dbg(dev, "allocated completion EQN %d\n", eq->eqn);
+ eq->index = i;
+ spin_lock(&table->lock);
+ list_add_tail(&eq->list, &dev->eqs_list);
+ spin_unlock(&table->lock);
+ }
+
+ dev->num_comp_vectors = ncomp_vec;
+ return 0;
+
+clean:
+ spin_lock(&table->lock);
+ list_for_each_entry_safe(eq, n, &dev->eqs_list, list) {
+ list_del(&eq->list);
+ spin_unlock(&table->lock);
+ if (mlx5_destroy_unmap_eq(&dev->mdev, eq))
+ mlx5_ib_warn(dev, "failed to destroy EQ 0x%x\n", eq->eqn);
+ kfree(eq);
+ spin_lock(&table->lock);
+ }
+ spin_unlock(&table->lock);
+ return err;
+}
+
+static void free_comp_eqs(struct mlx5_ib_dev *dev)
+{
+ struct mlx5_eq_table *table = &dev->mdev.priv.eq_table;
+ struct mlx5_eq *eq, *n;
+
+ spin_lock(&table->lock);
+ list_for_each_entry_safe(eq, n, &dev->eqs_list, list) {
+ list_del(&eq->list);
+ spin_unlock(&table->lock);
+ if (mlx5_destroy_unmap_eq(&dev->mdev, eq))
+ mlx5_ib_warn(dev, "failed to destroy EQ 0x%x\n", eq->eqn);
+ kfree(eq);
+ spin_lock(&table->lock);
+ }
+ spin_unlock(&table->lock);
+}
+
+static int mlx5_ib_query_device(struct ib_device *ibdev,
+ struct ib_device_attr *props)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibdev);
+ struct ib_smp *in_mad = NULL;
+ struct ib_smp *out_mad = NULL;
+ int err = -ENOMEM;
+ int max_rq_sg;
+ int max_sq_sg;
+ u64 flags;
+
+ in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
+ out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
+ if (!in_mad || !out_mad)
+ goto out;
+
+ init_query_mad(in_mad);
+ in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
+
+ err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad);
+ if (err)
+ goto out;
+
+ memset(props, 0, sizeof(*props));
+
+ props->fw_ver = ((u64)fw_rev_maj(&dev->mdev) << 32) |
+ (fw_rev_min(&dev->mdev) << 16) |
+ fw_rev_sub(&dev->mdev);
+ props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
+ IB_DEVICE_PORT_ACTIVE_EVENT |
+ IB_DEVICE_SYS_IMAGE_GUID |
+ IB_DEVICE_RC_RNR_NAK_GEN |
+ IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
+ flags = dev->mdev.caps.flags;
+ if (flags & MLX5_DEV_CAP_FLAG_BAD_PKEY_CNTR)
+ props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
+ if (flags & MLX5_DEV_CAP_FLAG_BAD_QKEY_CNTR)
+ props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
+ if (flags & MLX5_DEV_CAP_FLAG_APM)
+ props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
+ props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
+ if (flags & MLX5_DEV_CAP_FLAG_XRC)
+ props->device_cap_flags |= IB_DEVICE_XRC;
+ props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
+
+ props->vendor_id = be32_to_cpup((__be32 *)(out_mad->data + 36)) &
+ 0xffffff;
+ props->vendor_part_id = be16_to_cpup((__be16 *)(out_mad->data + 30));
+ props->hw_ver = be32_to_cpup((__be32 *)(out_mad->data + 32));
+ memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
+
+ props->max_mr_size = ~0ull;
+ props->page_size_cap = dev->mdev.caps.min_page_sz;
+ props->max_qp = 1 << dev->mdev.caps.log_max_qp;
+ props->max_qp_wr = dev->mdev.caps.max_wqes;
+ max_rq_sg = dev->mdev.caps.max_rq_desc_sz / sizeof(struct mlx5_wqe_data_seg);
+ max_sq_sg = (dev->mdev.caps.max_sq_desc_sz - sizeof(struct mlx5_wqe_ctrl_seg)) /
+ sizeof(struct mlx5_wqe_data_seg);
+ props->max_sge = min(max_rq_sg, max_sq_sg);
+ props->max_cq = 1 << dev->mdev.caps.log_max_cq;
+ props->max_cqe = dev->mdev.caps.max_cqes - 1;
+ props->max_mr = 1 << dev->mdev.caps.log_max_mkey;
+ props->max_pd = 1 << dev->mdev.caps.log_max_pd;
+ props->max_qp_rd_atom = dev->mdev.caps.max_ra_req_qp;
+ props->max_qp_init_rd_atom = dev->mdev.caps.max_ra_res_qp;
+ props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
+ props->max_srq = 1 << dev->mdev.caps.log_max_srq;
+ props->max_srq_wr = dev->mdev.caps.max_srq_wqes - 1;
+ props->max_srq_sge = max_rq_sg - 1;
+ props->max_fast_reg_page_list_len = (unsigned int)-1;
+ props->local_ca_ack_delay = dev->mdev.caps.local_ca_ack_delay;
+ props->atomic_cap = dev->mdev.caps.flags & MLX5_DEV_CAP_FLAG_ATOMIC ?
+ IB_ATOMIC_HCA : IB_ATOMIC_NONE;
+ props->masked_atomic_cap = IB_ATOMIC_HCA;
+ props->max_pkeys = be16_to_cpup((__be16 *)(out_mad->data + 28));
+ props->max_mcast_grp = 1 << dev->mdev.caps.log_max_mcg;
+ props->max_mcast_qp_attach = dev->mdev.caps.max_qp_mcg;
+ props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
+ props->max_mcast_grp;
+ props->max_map_per_fmr = INT_MAX; /* no limit in ConnectIB */
+
+out:
+ kfree(in_mad);
+ kfree(out_mad);
+
+ return err;
+}
+
+int mlx5_ib_query_port(struct ib_device *ibdev, u8 port,
+ struct ib_port_attr *props)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibdev);
+ struct ib_smp *in_mad = NULL;
+ struct ib_smp *out_mad = NULL;
+ int ext_active_speed;
+ int err = -ENOMEM;
+
+ if (port < 1 || port > dev->mdev.caps.num_ports) {
+ mlx5_ib_warn(dev, "invalid port number %d\n", port);
+ return -EINVAL;
+ }
+
+ in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
+ out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
+ if (!in_mad || !out_mad)
+ goto out;
+
+ memset(props, 0, sizeof(*props));
+
+ init_query_mad(in_mad);
+ in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
+ in_mad->attr_mod = cpu_to_be32(port);
+
+ err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad);
+ if (err) {
+ mlx5_ib_warn(dev, "err %d\n", err);
+ goto out;
+ }
+
+
+ props->lid = be16_to_cpup((__be16 *)(out_mad->data + 16));
+ props->lmc = out_mad->data[34] & 0x7;
+ props->sm_lid = be16_to_cpup((__be16 *)(out_mad->data + 18));
+ props->sm_sl = out_mad->data[36] & 0xf;
+ props->state = out_mad->data[32] & 0xf;
+ props->phys_state = out_mad->data[33] >> 4;
+ props->port_cap_flags = be32_to_cpup((__be32 *)(out_mad->data + 20));
+ props->gid_tbl_len = out_mad->data[50];
+ props->max_msg_sz = 1 << to_mdev(ibdev)->mdev.caps.log_max_msg;
+ props->pkey_tbl_len = to_mdev(ibdev)->mdev.caps.port[port - 1].pkey_table_len;
+ props->bad_pkey_cntr = be16_to_cpup((__be16 *)(out_mad->data + 46));
+ props->qkey_viol_cntr = be16_to_cpup((__be16 *)(out_mad->data + 48));
+ props->active_width = out_mad->data[31] & 0xf;
+ props->active_speed = out_mad->data[35] >> 4;
+ props->max_mtu = out_mad->data[41] & 0xf;
+ props->active_mtu = out_mad->data[36] >> 4;
+ props->subnet_timeout = out_mad->data[51] & 0x1f;
+ props->max_vl_num = out_mad->data[37] >> 4;
+ props->init_type_reply = out_mad->data[41] >> 4;
+
+ /* Check if extended speeds (EDR/FDR/...) are supported */
+ if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
+ ext_active_speed = out_mad->data[62] >> 4;
+
+ switch (ext_active_speed) {
+ case 1:
+ props->active_speed = 16; /* FDR */
+ break;
+ case 2:
+ props->active_speed = 32; /* EDR */
+ break;
+ }
+ }
+
+ /* If reported active speed is QDR, check if is FDR-10 */
+ if (props->active_speed == 4) {
+ if (dev->mdev.caps.ext_port_cap[port - 1] &
+ MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) {
+ init_query_mad(in_mad);
+ in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
+ in_mad->attr_mod = cpu_to_be32(port);
+
+ err = mlx5_MAD_IFC(dev, 1, 1, port,
+ NULL, NULL, in_mad, out_mad);
+ if (err)
+ goto out;
+
+ /* Checking LinkSpeedActive for FDR-10 */
+ if (out_mad->data[15] & 0x1)
+ props->active_speed = 8;
+ }
+ }
+
+out:
+ kfree(in_mad);
+ kfree(out_mad);
+
+ return err;
+}
+
+static int mlx5_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
+ union ib_gid *gid)
+{
+ struct ib_smp *in_mad = NULL;
+ struct ib_smp *out_mad = NULL;
+ int err = -ENOMEM;
+
+ in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
+ out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
+ if (!in_mad || !out_mad)
+ goto out;
+
+ init_query_mad(in_mad);
+ in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
+ in_mad->attr_mod = cpu_to_be32(port);
+
+ err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
+ if (err)
+ goto out;
+
+ memcpy(gid->raw, out_mad->data + 8, 8);
+
+ init_query_mad(in_mad);
+ in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
+ in_mad->attr_mod = cpu_to_be32(index / 8);
+
+ err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
+ if (err)
+ goto out;
+
+ memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
+
+out:
+ kfree(in_mad);
+ kfree(out_mad);
+ return err;
+}
+
+static int mlx5_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
+ u16 *pkey)
+{
+ struct ib_smp *in_mad = NULL;
+ struct ib_smp *out_mad = NULL;
+ int err = -ENOMEM;
+
+ in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
+ out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
+ if (!in_mad || !out_mad)
+ goto out;
+
+ init_query_mad(in_mad);
+ in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
+ in_mad->attr_mod = cpu_to_be32(index / 32);
+
+ err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
+ if (err)
+ goto out;
+
+ *pkey = be16_to_cpu(((__be16 *)out_mad->data)[index % 32]);
+
+out:
+ kfree(in_mad);
+ kfree(out_mad);
+ return err;
+}
+
+struct mlx5_reg_node_desc {
+ u8 desc[64];
+};
+
+static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask,
+ struct ib_device_modify *props)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibdev);
+ struct mlx5_reg_node_desc in;
+ struct mlx5_reg_node_desc out;
+ int err;
+
+ if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
+ return -EOPNOTSUPP;
+
+ if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
+ return 0;
+
+ /*
+ * If possible, pass node desc to FW, so it can generate
+ * a 144 trap. If cmd fails, just ignore.
+ */
+ memcpy(&in, props->node_desc, 64);
+ err = mlx5_core_access_reg(&dev->mdev, &in, sizeof(in), &out,
+ sizeof(out), MLX5_REG_NODE_DESC, 0, 1);
+ if (err)
+ return err;
+
+ memcpy(ibdev->node_desc, props->node_desc, 64);
+
+ return err;
+}
+
+static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
+ struct ib_port_modify *props)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibdev);
+ struct ib_port_attr attr;
+ u32 tmp;
+ int err;
+
+ mutex_lock(&dev->cap_mask_mutex);
+
+ err = mlx5_ib_query_port(ibdev, port, &attr);
+ if (err)
+ goto out;
+
+ tmp = (attr.port_cap_flags | props->set_port_cap_mask) &
+ ~props->clr_port_cap_mask;
+
+ err = mlx5_set_port_caps(&dev->mdev, port, tmp);
+
+out:
+ mutex_unlock(&dev->cap_mask_mutex);
+ return err;
+}
+
+static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
+ struct ib_udata *udata)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibdev);
+ struct mlx5_ib_alloc_ucontext_req req;
+ struct mlx5_ib_alloc_ucontext_resp resp;
+ struct mlx5_ib_ucontext *context;
+ struct mlx5_uuar_info *uuari;
+ struct mlx5_uar *uars;
+ int num_uars;
+ int uuarn;
+ int err;
+ int i;
+
+ if (!dev->ib_active)
+ return ERR_PTR(-EAGAIN);
+
+ err = ib_copy_from_udata(&req, udata, sizeof(req));
+ if (err)
+ return ERR_PTR(err);
+
+ if (req.total_num_uuars > MLX5_MAX_UUARS)
+ return ERR_PTR(-ENOMEM);
+
+ if (req.total_num_uuars == 0)
+ return ERR_PTR(-EINVAL);
+
+ req.total_num_uuars = ALIGN(req.total_num_uuars, MLX5_BF_REGS_PER_PAGE);
+ if (req.num_low_latency_uuars > req.total_num_uuars - 1)
+ return ERR_PTR(-EINVAL);
+
+ num_uars = req.total_num_uuars / MLX5_BF_REGS_PER_PAGE;
+ resp.qp_tab_size = 1 << dev->mdev.caps.log_max_qp;
+ resp.bf_reg_size = dev->mdev.caps.bf_reg_size;
+ resp.cache_line_size = L1_CACHE_BYTES;
+ resp.max_sq_desc_sz = dev->mdev.caps.max_sq_desc_sz;
+ resp.max_rq_desc_sz = dev->mdev.caps.max_rq_desc_sz;
+ resp.max_send_wqebb = dev->mdev.caps.max_wqes;
+ resp.max_recv_wr = dev->mdev.caps.max_wqes;
+ resp.max_srq_recv_wr = dev->mdev.caps.max_srq_wqes;
+
+ context = kzalloc(sizeof(*context), GFP_KERNEL);
+ if (!context)
+ return ERR_PTR(-ENOMEM);
+
+ uuari = &context->uuari;
+ mutex_init(&uuari->lock);
+ uars = kcalloc(num_uars, sizeof(*uars), GFP_KERNEL);
+ if (!uars) {
+ err = -ENOMEM;
+ goto out_ctx;
+ }
+
+ uuari->bitmap = kcalloc(BITS_TO_LONGS(req.total_num_uuars),
+ sizeof(*uuari->bitmap),
+ GFP_KERNEL);
+ if (!uuari->bitmap) {
+ err = -ENOMEM;
+ goto out_uar_ctx;
+ }
+ /*
+ * clear all fast path uuars
+ */
+ for (i = 0; i < req.total_num_uuars; i++) {
+ uuarn = i & 3;
+ if (uuarn == 2 || uuarn == 3)
+ set_bit(i, uuari->bitmap);
+ }
+
+ uuari->count = kcalloc(req.total_num_uuars, sizeof(*uuari->count), GFP_KERNEL);
+ if (!uuari->count) {
+ err = -ENOMEM;
+ goto out_bitmap;
+ }
+
+ for (i = 0; i < num_uars; i++) {
+ err = mlx5_cmd_alloc_uar(&dev->mdev, &uars[i].index);
+ if (err)
+ goto out_count;
+ }
+
+ INIT_LIST_HEAD(&context->db_page_list);
+ mutex_init(&context->db_page_mutex);
+
+ resp.tot_uuars = req.total_num_uuars;
+ resp.num_ports = dev->mdev.caps.num_ports;
+ err = ib_copy_to_udata(udata, &resp, sizeof(resp));
+ if (err)
+ goto out_uars;
+
+ uuari->num_low_latency_uuars = req.num_low_latency_uuars;
+ uuari->uars = uars;
+ uuari->num_uars = num_uars;
+ return &context->ibucontext;
+
+out_uars:
+ for (i--; i >= 0; i--)
+ mlx5_cmd_free_uar(&dev->mdev, uars[i].index);
+out_count:
+ kfree(uuari->count);
+
+out_bitmap:
+ kfree(uuari->bitmap);
+
+out_uar_ctx:
+ kfree(uars);
+
+out_ctx:
+ kfree(context);
+ return ERR_PTR(err);
+}
+
+static int mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
+{
+ struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
+ struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
+ struct mlx5_uuar_info *uuari = &context->uuari;
+ int i;
+
+ for (i = 0; i < uuari->num_uars; i++) {
+ if (mlx5_cmd_free_uar(&dev->mdev, uuari->uars[i].index))
+ mlx5_ib_warn(dev, "failed to free UAR 0x%x\n", uuari->uars[i].index);
+ }
+
+ kfree(uuari->count);
+ kfree(uuari->bitmap);
+ kfree(uuari->uars);
+ kfree(context);
+
+ return 0;
+}
+
+static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev, int index)
+{
+ return (pci_resource_start(dev->mdev.pdev, 0) >> PAGE_SHIFT) + index;
+}
+
+static int get_command(unsigned long offset)
+{
+ return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK;
+}
+
+static int get_arg(unsigned long offset)
+{
+ return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1);
+}
+
+static int get_index(unsigned long offset)
+{
+ return get_arg(offset);
+}
+
+static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
+{
+ struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
+ struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
+ struct mlx5_uuar_info *uuari = &context->uuari;
+ unsigned long command;
+ unsigned long idx;
+ phys_addr_t pfn;
+
+ command = get_command(vma->vm_pgoff);
+ switch (command) {
+ case MLX5_IB_MMAP_REGULAR_PAGE:
+ if (vma->vm_end - vma->vm_start != PAGE_SIZE)
+ return -EINVAL;
+
+ idx = get_index(vma->vm_pgoff);
+ pfn = uar_index2pfn(dev, uuari->uars[idx].index);
+ mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn 0x%llx\n", idx,
+ (unsigned long long)pfn);
+
+ if (idx >= uuari->num_uars)
+ return -EINVAL;
+
+ vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
+ if (io_remap_pfn_range(vma, vma->vm_start, pfn,
+ PAGE_SIZE, vma->vm_page_prot))
+ return -EAGAIN;
+
+ mlx5_ib_dbg(dev, "mapped WC at 0x%lx, PA 0x%llx\n",
+ vma->vm_start,
+ (unsigned long long)pfn << PAGE_SHIFT);
+ break;
+
+ case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES:
+ return -ENOSYS;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int alloc_pa_mkey(struct mlx5_ib_dev *dev, u32 *key, u32 pdn)
+{
+ struct mlx5_create_mkey_mbox_in *in;
+ struct mlx5_mkey_seg *seg;
+ struct mlx5_core_mr mr;
+ int err;
+
+ in = kzalloc(sizeof(*in), GFP_KERNEL);
+ if (!in)
+ return -ENOMEM;
+
+ seg = &in->seg;
+ seg->flags = MLX5_PERM_LOCAL_READ | MLX5_ACCESS_MODE_PA;
+ seg->flags_pd = cpu_to_be32(pdn | MLX5_MKEY_LEN64);
+ seg->qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
+ seg->start_addr = 0;
+
+ err = mlx5_core_create_mkey(&dev->mdev, &mr, in, sizeof(*in));
+ if (err) {
+ mlx5_ib_warn(dev, "failed to create mkey, %d\n", err);
+ goto err_in;
+ }
+
+ kfree(in);
+ *key = mr.key;
+
+ return 0;
+
+err_in:
+ kfree(in);
+
+ return err;
+}
+
+static void free_pa_mkey(struct mlx5_ib_dev *dev, u32 key)
+{
+ struct mlx5_core_mr mr;
+ int err;
+
+ memset(&mr, 0, sizeof(mr));
+ mr.key = key;
+ err = mlx5_core_destroy_mkey(&dev->mdev, &mr);
+ if (err)
+ mlx5_ib_warn(dev, "failed to destroy mkey 0x%x\n", key);
+}
+
+static struct ib_pd *mlx5_ib_alloc_pd(struct ib_device *ibdev,
+ struct ib_ucontext *context,
+ struct ib_udata *udata)
+{
+ struct mlx5_ib_alloc_pd_resp resp;
+ struct mlx5_ib_pd *pd;
+ int err;
+
+ pd = kmalloc(sizeof(*pd), GFP_KERNEL);
+ if (!pd)
+ return ERR_PTR(-ENOMEM);
+
+ err = mlx5_core_alloc_pd(&to_mdev(ibdev)->mdev, &pd->pdn);
+ if (err) {
+ kfree(pd);
+ return ERR_PTR(err);
+ }
+
+ if (context) {
+ resp.pdn = pd->pdn;
+ if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
+ mlx5_core_dealloc_pd(&to_mdev(ibdev)->mdev, pd->pdn);
+ kfree(pd);
+ return ERR_PTR(-EFAULT);
+ }
+ } else {
+ err = alloc_pa_mkey(to_mdev(ibdev), &pd->pa_lkey, pd->pdn);
+ if (err) {
+ mlx5_core_dealloc_pd(&to_mdev(ibdev)->mdev, pd->pdn);
+ kfree(pd);
+ return ERR_PTR(err);
+ }
+ }
+
+ return &pd->ibpd;
+}
+
+static int mlx5_ib_dealloc_pd(struct ib_pd *pd)
+{
+ struct mlx5_ib_dev *mdev = to_mdev(pd->device);
+ struct mlx5_ib_pd *mpd = to_mpd(pd);
+
+ if (!pd->uobject)
+ free_pa_mkey(mdev, mpd->pa_lkey);
+
+ mlx5_core_dealloc_pd(&mdev->mdev, mpd->pdn);
+ kfree(mpd);
+
+ return 0;
+}
+
+static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
+ int err;
+
+ err = mlx5_core_attach_mcg(&dev->mdev, gid, ibqp->qp_num);
+ if (err)
+ mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n",
+ ibqp->qp_num, gid->raw);
+
+ return err;
+}
+
+static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
+ int err;
+
+ err = mlx5_core_detach_mcg(&dev->mdev, gid, ibqp->qp_num);
+ if (err)
+ mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n",
+ ibqp->qp_num, gid->raw);
+
+ return err;
+}
+
+static int init_node_data(struct mlx5_ib_dev *dev)
+{
+ struct ib_smp *in_mad = NULL;
+ struct ib_smp *out_mad = NULL;
+ int err = -ENOMEM;
+
+ in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
+ out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
+ if (!in_mad || !out_mad)
+ goto out;
+
+ init_query_mad(in_mad);
+ in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
+
+ err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
+ if (err)
+ goto out;
+
+ memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
+
+ in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
+
+ err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
+ if (err)
+ goto out;
+
+ dev->mdev.rev_id = be32_to_cpup((__be32 *)(out_mad->data + 32));
+ memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
+
+out:
+ kfree(in_mad);
+ kfree(out_mad);
+ return err;
+}
+
+static ssize_t show_fw_pages(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct mlx5_ib_dev *dev =
+ container_of(device, struct mlx5_ib_dev, ib_dev.dev);
+
+ return sprintf(buf, "%d\n", dev->mdev.priv.fw_pages);
+}
+
+static ssize_t show_reg_pages(struct device *device,
+ struct device_attribute *attr, char *buf)
+{
+ struct mlx5_ib_dev *dev =
+ container_of(device, struct mlx5_ib_dev, ib_dev.dev);
+
+ return sprintf(buf, "%d\n", dev->mdev.priv.reg_pages);
+}
+
+static ssize_t show_hca(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct mlx5_ib_dev *dev =
+ container_of(device, struct mlx5_ib_dev, ib_dev.dev);
+ return sprintf(buf, "MT%d\n", dev->mdev.pdev->device);
+}
+
+static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct mlx5_ib_dev *dev =
+ container_of(device, struct mlx5_ib_dev, ib_dev.dev);
+ return sprintf(buf, "%d.%d.%d\n", fw_rev_maj(&dev->mdev),
+ fw_rev_min(&dev->mdev), fw_rev_sub(&dev->mdev));
+}
+
+static ssize_t show_rev(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct mlx5_ib_dev *dev =
+ container_of(device, struct mlx5_ib_dev, ib_dev.dev);
+ return sprintf(buf, "%x\n", dev->mdev.rev_id);
+}
+
+static ssize_t show_board(struct device *device, struct device_attribute *attr,
+ char *buf)
+{
+ struct mlx5_ib_dev *dev =
+ container_of(device, struct mlx5_ib_dev, ib_dev.dev);
+ return sprintf(buf, "%.*s\n", MLX5_BOARD_ID_LEN,
+ dev->mdev.board_id);
+}
+
+static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
+static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
+static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
+static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
+static DEVICE_ATTR(fw_pages, S_IRUGO, show_fw_pages, NULL);
+static DEVICE_ATTR(reg_pages, S_IRUGO, show_reg_pages, NULL);
+
+static struct device_attribute *mlx5_class_attributes[] = {
+ &dev_attr_hw_rev,
+ &dev_attr_fw_ver,
+ &dev_attr_hca_type,
+ &dev_attr_board_id,
+ &dev_attr_fw_pages,
+ &dev_attr_reg_pages,
+};
+
+static void mlx5_ib_event(struct mlx5_core_dev *dev, enum mlx5_dev_event event,
+ void *data)
+{
+ struct mlx5_ib_dev *ibdev = container_of(dev, struct mlx5_ib_dev, mdev);
+ struct ib_event ibev;
+ u8 port = 0;
+
+ switch (event) {
+ case MLX5_DEV_EVENT_SYS_ERROR:
+ ibdev->ib_active = false;
+ ibev.event = IB_EVENT_DEVICE_FATAL;
+ break;
+
+ case MLX5_DEV_EVENT_PORT_UP:
+ ibev.event = IB_EVENT_PORT_ACTIVE;
+ port = *(u8 *)data;
+ break;
+
+ case MLX5_DEV_EVENT_PORT_DOWN:
+ ibev.event = IB_EVENT_PORT_ERR;
+ port = *(u8 *)data;
+ break;
+
+ case MLX5_DEV_EVENT_PORT_INITIALIZED:
+ /* not used by ULPs */
+ return;
+
+ case MLX5_DEV_EVENT_LID_CHANGE:
+ ibev.event = IB_EVENT_LID_CHANGE;
+ port = *(u8 *)data;
+ break;
+
+ case MLX5_DEV_EVENT_PKEY_CHANGE:
+ ibev.event = IB_EVENT_PKEY_CHANGE;
+ port = *(u8 *)data;
+ break;
+
+ case MLX5_DEV_EVENT_GUID_CHANGE:
+ ibev.event = IB_EVENT_GID_CHANGE;
+ port = *(u8 *)data;
+ break;
+
+ case MLX5_DEV_EVENT_CLIENT_REREG:
+ ibev.event = IB_EVENT_CLIENT_REREGISTER;
+ port = *(u8 *)data;
+ break;
+ }
+
+ ibev.device = &ibdev->ib_dev;
+ ibev.element.port_num = port;
+
+ if (ibdev->ib_active)
+ ib_dispatch_event(&ibev);
+}
+
+static void get_ext_port_caps(struct mlx5_ib_dev *dev)
+{
+ int port;
+
+ for (port = 1; port <= dev->mdev.caps.num_ports; port++)
+ mlx5_query_ext_port_caps(dev, port);
+}
+
+static int get_port_caps(struct mlx5_ib_dev *dev)
+{
+ struct ib_device_attr *dprops = NULL;
+ struct ib_port_attr *pprops = NULL;
+ int err = 0;
+ int port;
+
+ pprops = kmalloc(sizeof(*pprops), GFP_KERNEL);
+ if (!pprops)
+ goto out;
+
+ dprops = kmalloc(sizeof(*dprops), GFP_KERNEL);
+ if (!dprops)
+ goto out;
+
+ err = mlx5_ib_query_device(&dev->ib_dev, dprops);
+ if (err) {
+ mlx5_ib_warn(dev, "query_device failed %d\n", err);
+ goto out;
+ }
+
+ for (port = 1; port <= dev->mdev.caps.num_ports; port++) {
+ err = mlx5_ib_query_port(&dev->ib_dev, port, pprops);
+ if (err) {
+ mlx5_ib_warn(dev, "query_port %d failed %d\n", port, err);
+ break;
+ }
+ dev->mdev.caps.port[port - 1].pkey_table_len = dprops->max_pkeys;
+ dev->mdev.caps.port[port - 1].gid_table_len = pprops->gid_tbl_len;
+ mlx5_ib_dbg(dev, "pkey_table_len %d, gid_table_len %d\n",
+ dprops->max_pkeys, pprops->gid_tbl_len);
+ }
+
+out:
+ kfree(pprops);
+ kfree(dprops);
+
+ return err;
+}
+
+static void destroy_umrc_res(struct mlx5_ib_dev *dev)
+{
+ int err;
+
+ err = mlx5_mr_cache_cleanup(dev);
+ if (err)
+ mlx5_ib_warn(dev, "mr cache cleanup failed\n");
+
+ mlx5_ib_destroy_qp(dev->umrc.qp);
+ ib_destroy_cq(dev->umrc.cq);
+ ib_dereg_mr(dev->umrc.mr);
+ ib_dealloc_pd(dev->umrc.pd);
+}
+
+enum {
+ MAX_UMR_WR = 128,
+};
+
+static int create_umr_res(struct mlx5_ib_dev *dev)
+{
+ struct ib_qp_init_attr *init_attr = NULL;
+ struct ib_qp_attr *attr = NULL;
+ struct ib_pd *pd;
+ struct ib_cq *cq;
+ struct ib_qp *qp;
+ struct ib_mr *mr;
+ int ret;
+
+ attr = kzalloc(sizeof(*attr), GFP_KERNEL);
+ init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
+ if (!attr || !init_attr) {
+ ret = -ENOMEM;
+ goto error_0;
+ }
+
+ pd = ib_alloc_pd(&dev->ib_dev);
+ if (IS_ERR(pd)) {
+ mlx5_ib_dbg(dev, "Couldn't create PD for sync UMR QP\n");
+ ret = PTR_ERR(pd);
+ goto error_0;
+ }
+
+ mr = ib_get_dma_mr(pd, IB_ACCESS_LOCAL_WRITE);
+ if (IS_ERR(mr)) {
+ mlx5_ib_dbg(dev, "Couldn't create DMA MR for sync UMR QP\n");
+ ret = PTR_ERR(mr);
+ goto error_1;
+ }
+
+ cq = ib_create_cq(&dev->ib_dev, mlx5_umr_cq_handler, NULL, NULL, 128,
+ 0);
+ if (IS_ERR(cq)) {
+ mlx5_ib_dbg(dev, "Couldn't create CQ for sync UMR QP\n");
+ ret = PTR_ERR(cq);
+ goto error_2;
+ }
+ ib_req_notify_cq(cq, IB_CQ_NEXT_COMP);
+
+ init_attr->send_cq = cq;
+ init_attr->recv_cq = cq;
+ init_attr->sq_sig_type = IB_SIGNAL_ALL_WR;
+ init_attr->cap.max_send_wr = MAX_UMR_WR;
+ init_attr->cap.max_send_sge = 1;
+ init_attr->qp_type = MLX5_IB_QPT_REG_UMR;
+ init_attr->port_num = 1;
+ qp = mlx5_ib_create_qp(pd, init_attr, NULL);
+ if (IS_ERR(qp)) {
+ mlx5_ib_dbg(dev, "Couldn't create sync UMR QP\n");
+ ret = PTR_ERR(qp);
+ goto error_3;
+ }
+ qp->device = &dev->ib_dev;
+ qp->real_qp = qp;
+ qp->uobject = NULL;
+ qp->qp_type = MLX5_IB_QPT_REG_UMR;
+
+ attr->qp_state = IB_QPS_INIT;
+ attr->port_num = 1;
+ ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_PKEY_INDEX |
+ IB_QP_PORT, NULL);
+ if (ret) {
+ mlx5_ib_dbg(dev, "Couldn't modify UMR QP\n");
+ goto error_4;
+ }
+
+ memset(attr, 0, sizeof(*attr));
+ attr->qp_state = IB_QPS_RTR;
+ attr->path_mtu = IB_MTU_256;
+
+ ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
+ if (ret) {
+ mlx5_ib_dbg(dev, "Couldn't modify umr QP to rtr\n");
+ goto error_4;
+ }
+
+ memset(attr, 0, sizeof(*attr));
+ attr->qp_state = IB_QPS_RTS;
+ ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
+ if (ret) {
+ mlx5_ib_dbg(dev, "Couldn't modify umr QP to rts\n");
+ goto error_4;
+ }
+
+ dev->umrc.qp = qp;
+ dev->umrc.cq = cq;
+ dev->umrc.mr = mr;
+ dev->umrc.pd = pd;
+
+ sema_init(&dev->umrc.sem, MAX_UMR_WR);
+ ret = mlx5_mr_cache_init(dev);
+ if (ret) {
+ mlx5_ib_warn(dev, "mr cache init failed %d\n", ret);
+ goto error_4;
+ }
+
+ kfree(attr);
+ kfree(init_attr);
+
+ return 0;
+
+error_4:
+ mlx5_ib_destroy_qp(qp);
+
+error_3:
+ ib_destroy_cq(cq);
+
+error_2:
+ ib_dereg_mr(mr);
+
+error_1:
+ ib_dealloc_pd(pd);
+
+error_0:
+ kfree(attr);
+ kfree(init_attr);
+ return ret;
+}
+
+static int create_dev_resources(struct mlx5_ib_resources *devr)
+{
+ struct ib_srq_init_attr attr;
+ struct mlx5_ib_dev *dev;
+ int ret = 0;
+
+ dev = container_of(devr, struct mlx5_ib_dev, devr);
+
+ devr->p0 = mlx5_ib_alloc_pd(&dev->ib_dev, NULL, NULL);
+ if (IS_ERR(devr->p0)) {
+ ret = PTR_ERR(devr->p0);
+ goto error0;
+ }
+ devr->p0->device = &dev->ib_dev;
+ devr->p0->uobject = NULL;
+ atomic_set(&devr->p0->usecnt, 0);
+
+ devr->c0 = mlx5_ib_create_cq(&dev->ib_dev, 1, 0, NULL, NULL);
+ if (IS_ERR(devr->c0)) {
+ ret = PTR_ERR(devr->c0);
+ goto error1;
+ }
+ devr->c0->device = &dev->ib_dev;
+ devr->c0->uobject = NULL;
+ devr->c0->comp_handler = NULL;
+ devr->c0->event_handler = NULL;
+ devr->c0->cq_context = NULL;
+ atomic_set(&devr->c0->usecnt, 0);
+
+ devr->x0 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
+ if (IS_ERR(devr->x0)) {
+ ret = PTR_ERR(devr->x0);
+ goto error2;
+ }
+ devr->x0->device = &dev->ib_dev;
+ devr->x0->inode = NULL;
+ atomic_set(&devr->x0->usecnt, 0);
+ mutex_init(&devr->x0->tgt_qp_mutex);
+ INIT_LIST_HEAD(&devr->x0->tgt_qp_list);
+
+ devr->x1 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
+ if (IS_ERR(devr->x1)) {
+ ret = PTR_ERR(devr->x1);
+ goto error3;
+ }
+ devr->x1->device = &dev->ib_dev;
+ devr->x1->inode = NULL;
+ atomic_set(&devr->x1->usecnt, 0);
+ mutex_init(&devr->x1->tgt_qp_mutex);
+ INIT_LIST_HEAD(&devr->x1->tgt_qp_list);
+
+ memset(&attr, 0, sizeof(attr));
+ attr.attr.max_sge = 1;
+ attr.attr.max_wr = 1;
+ attr.srq_type = IB_SRQT_XRC;
+ attr.ext.xrc.cq = devr->c0;
+ attr.ext.xrc.xrcd = devr->x0;
+
+ devr->s0 = mlx5_ib_create_srq(devr->p0, &attr, NULL);
+ if (IS_ERR(devr->s0)) {
+ ret = PTR_ERR(devr->s0);
+ goto error4;
+ }
+ devr->s0->device = &dev->ib_dev;
+ devr->s0->pd = devr->p0;
+ devr->s0->uobject = NULL;
+ devr->s0->event_handler = NULL;
+ devr->s0->srq_context = NULL;
+ devr->s0->srq_type = IB_SRQT_XRC;
+ devr->s0->ext.xrc.xrcd = devr->x0;
+ devr->s0->ext.xrc.cq = devr->c0;
+ atomic_inc(&devr->s0->ext.xrc.xrcd->usecnt);
+ atomic_inc(&devr->s0->ext.xrc.cq->usecnt);
+ atomic_inc(&devr->p0->usecnt);
+ atomic_set(&devr->s0->usecnt, 0);
+
+ return 0;
+
+error4:
+ mlx5_ib_dealloc_xrcd(devr->x1);
+error3:
+ mlx5_ib_dealloc_xrcd(devr->x0);
+error2:
+ mlx5_ib_destroy_cq(devr->c0);
+error1:
+ mlx5_ib_dealloc_pd(devr->p0);
+error0:
+ return ret;
+}
+
+static void destroy_dev_resources(struct mlx5_ib_resources *devr)
+{
+ mlx5_ib_destroy_srq(devr->s0);
+ mlx5_ib_dealloc_xrcd(devr->x0);
+ mlx5_ib_dealloc_xrcd(devr->x1);
+ mlx5_ib_destroy_cq(devr->c0);
+ mlx5_ib_dealloc_pd(devr->p0);
+}
+
+static int init_one(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ struct mlx5_core_dev *mdev;
+ struct mlx5_ib_dev *dev;
+ int err;
+ int i;
+
+ printk_once(KERN_INFO "%s", mlx5_version);
+
+ dev = (struct mlx5_ib_dev *)ib_alloc_device(sizeof(*dev));
+ if (!dev)
+ return -ENOMEM;
+
+ mdev = &dev->mdev;
+ mdev->event = mlx5_ib_event;
+ if (prof_sel >= ARRAY_SIZE(profile)) {
+ pr_warn("selected pofile out of range, selceting default\n");
+ prof_sel = 0;
+ }
+ mdev->profile = &profile[prof_sel];
+ err = mlx5_dev_init(mdev, pdev);
+ if (err)
+ goto err_free;
+
+ err = get_port_caps(dev);
+ if (err)
+ goto err_cleanup;
+
+ get_ext_port_caps(dev);
+
+ err = alloc_comp_eqs(dev);
+ if (err)
+ goto err_cleanup;
+
+ MLX5_INIT_DOORBELL_LOCK(&dev->uar_lock);
+
+ strlcpy(dev->ib_dev.name, "mlx5_%d", IB_DEVICE_NAME_MAX);
+ dev->ib_dev.owner = THIS_MODULE;
+ dev->ib_dev.node_type = RDMA_NODE_IB_CA;
+ dev->ib_dev.local_dma_lkey = mdev->caps.reserved_lkey;
+ dev->num_ports = mdev->caps.num_ports;
+ dev->ib_dev.phys_port_cnt = dev->num_ports;
+ dev->ib_dev.num_comp_vectors = dev->num_comp_vectors;
+ dev->ib_dev.dma_device = &mdev->pdev->dev;
+
+ dev->ib_dev.uverbs_abi_ver = MLX5_IB_UVERBS_ABI_VERSION;
+ dev->ib_dev.uverbs_cmd_mask =
+ (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
+ (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
+ (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
+ (1ull << IB_USER_VERBS_CMD_REG_MR) |
+ (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
+ (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
+ (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
+ (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
+ (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
+ (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
+ (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
+ (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
+ (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) |
+ (1ull << IB_USER_VERBS_CMD_OPEN_QP);
+
+ dev->ib_dev.query_device = mlx5_ib_query_device;
+ dev->ib_dev.query_port = mlx5_ib_query_port;
+ dev->ib_dev.query_gid = mlx5_ib_query_gid;
+ dev->ib_dev.query_pkey = mlx5_ib_query_pkey;
+ dev->ib_dev.modify_device = mlx5_ib_modify_device;
+ dev->ib_dev.modify_port = mlx5_ib_modify_port;
+ dev->ib_dev.alloc_ucontext = mlx5_ib_alloc_ucontext;
+ dev->ib_dev.dealloc_ucontext = mlx5_ib_dealloc_ucontext;
+ dev->ib_dev.mmap = mlx5_ib_mmap;
+ dev->ib_dev.alloc_pd = mlx5_ib_alloc_pd;
+ dev->ib_dev.dealloc_pd = mlx5_ib_dealloc_pd;
+ dev->ib_dev.create_ah = mlx5_ib_create_ah;
+ dev->ib_dev.query_ah = mlx5_ib_query_ah;
+ dev->ib_dev.destroy_ah = mlx5_ib_destroy_ah;
+ dev->ib_dev.create_srq = mlx5_ib_create_srq;
+ dev->ib_dev.modify_srq = mlx5_ib_modify_srq;
+ dev->ib_dev.query_srq = mlx5_ib_query_srq;
+ dev->ib_dev.destroy_srq = mlx5_ib_destroy_srq;
+ dev->ib_dev.post_srq_recv = mlx5_ib_post_srq_recv;
+ dev->ib_dev.create_qp = mlx5_ib_create_qp;
+ dev->ib_dev.modify_qp = mlx5_ib_modify_qp;
+ dev->ib_dev.query_qp = mlx5_ib_query_qp;
+ dev->ib_dev.destroy_qp = mlx5_ib_destroy_qp;
+ dev->ib_dev.post_send = mlx5_ib_post_send;
+ dev->ib_dev.post_recv = mlx5_ib_post_recv;
+ dev->ib_dev.create_cq = mlx5_ib_create_cq;
+ dev->ib_dev.modify_cq = mlx5_ib_modify_cq;
+ dev->ib_dev.resize_cq = mlx5_ib_resize_cq;
+ dev->ib_dev.destroy_cq = mlx5_ib_destroy_cq;
+ dev->ib_dev.poll_cq = mlx5_ib_poll_cq;
+ dev->ib_dev.req_notify_cq = mlx5_ib_arm_cq;
+ dev->ib_dev.get_dma_mr = mlx5_ib_get_dma_mr;
+ dev->ib_dev.reg_user_mr = mlx5_ib_reg_user_mr;
+ dev->ib_dev.dereg_mr = mlx5_ib_dereg_mr;
+ dev->ib_dev.attach_mcast = mlx5_ib_mcg_attach;
+ dev->ib_dev.detach_mcast = mlx5_ib_mcg_detach;
+ dev->ib_dev.process_mad = mlx5_ib_process_mad;
+ dev->ib_dev.alloc_fast_reg_mr = mlx5_ib_alloc_fast_reg_mr;
+ dev->ib_dev.alloc_fast_reg_page_list = mlx5_ib_alloc_fast_reg_page_list;
+ dev->ib_dev.free_fast_reg_page_list = mlx5_ib_free_fast_reg_page_list;
+
+ if (mdev->caps.flags & MLX5_DEV_CAP_FLAG_XRC) {
+ dev->ib_dev.alloc_xrcd = mlx5_ib_alloc_xrcd;
+ dev->ib_dev.dealloc_xrcd = mlx5_ib_dealloc_xrcd;
+ dev->ib_dev.uverbs_cmd_mask |=
+ (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
+ (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
+ }
+
+ err = init_node_data(dev);
+ if (err)
+ goto err_eqs;
+
+ mutex_init(&dev->cap_mask_mutex);
+ spin_lock_init(&dev->mr_lock);
+
+ err = create_dev_resources(&dev->devr);
+ if (err)
+ goto err_eqs;
+
+ if (ib_register_device(&dev->ib_dev, NULL))
+ goto err_rsrc;
+
+ err = create_umr_res(dev);
+ if (err)
+ goto err_dev;
+
+ for (i = 0; i < ARRAY_SIZE(mlx5_class_attributes); i++) {
+ if (device_create_file(&dev->ib_dev.dev,
+ mlx5_class_attributes[i]))
+ goto err_umrc;
+ }
+
+ dev->ib_active = true;
+
+ return 0;
+
+err_umrc:
+ destroy_umrc_res(dev);
+
+err_dev:
+ ib_unregister_device(&dev->ib_dev);
+
+err_rsrc:
+ destroy_dev_resources(&dev->devr);
+
+err_eqs:
+ free_comp_eqs(dev);
+
+err_cleanup:
+ mlx5_dev_cleanup(mdev);
+
+err_free:
+ ib_dealloc_device((struct ib_device *)dev);
+
+ return err;
+}
+
+static void remove_one(struct pci_dev *pdev)
+{
+ struct mlx5_ib_dev *dev = mlx5_pci2ibdev(pdev);
+
+ destroy_umrc_res(dev);
+ ib_unregister_device(&dev->ib_dev);
+ destroy_dev_resources(&dev->devr);
+ free_comp_eqs(dev);
+ mlx5_dev_cleanup(&dev->mdev);
+ ib_dealloc_device(&dev->ib_dev);
+}
+
+static DEFINE_PCI_DEVICE_TABLE(mlx5_ib_pci_table) = {
+ { PCI_VDEVICE(MELLANOX, 4113) }, /* MT4113 Connect-IB */
+ { 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, mlx5_ib_pci_table);
+
+static struct pci_driver mlx5_ib_driver = {
+ .name = DRIVER_NAME,
+ .id_table = mlx5_ib_pci_table,
+ .probe = init_one,
+ .remove = remove_one
+};
+
+static int __init mlx5_ib_init(void)
+{
+ return pci_register_driver(&mlx5_ib_driver);
+}
+
+static void __exit mlx5_ib_cleanup(void)
+{
+ pci_unregister_driver(&mlx5_ib_driver);
+}
+
+module_init(mlx5_ib_init);
+module_exit(mlx5_ib_cleanup);
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/module.h>
+#include <rdma/ib_umem.h>
+#include "mlx5_ib.h"
+
+/* @umem: umem object to scan
+ * @addr: ib virtual address requested by the user
+ * @count: number of PAGE_SIZE pages covered by umem
+ * @shift: page shift for the compound pages found in the region
+ * @ncont: number of compund pages
+ * @order: log2 of the number of compound pages
+ */
+void mlx5_ib_cont_pages(struct ib_umem *umem, u64 addr, int *count, int *shift,
+ int *ncont, int *order)
+{
+ struct ib_umem_chunk *chunk;
+ unsigned long tmp;
+ unsigned long m;
+ int i, j, k;
+ u64 base = 0;
+ int p = 0;
+ int skip;
+ int mask;
+ u64 len;
+ u64 pfn;
+
+ addr = addr >> PAGE_SHIFT;
+ tmp = (unsigned long)addr;
+ m = find_first_bit(&tmp, sizeof(tmp));
+ skip = 1 << m;
+ mask = skip - 1;
+ i = 0;
+ list_for_each_entry(chunk, &umem->chunk_list, list)
+ for (j = 0; j < chunk->nmap; j++) {
+ len = sg_dma_len(&chunk->page_list[j]) >> PAGE_SHIFT;
+ pfn = sg_dma_address(&chunk->page_list[j]) >> PAGE_SHIFT;
+ for (k = 0; k < len; k++) {
+ if (!(i & mask)) {
+ tmp = (unsigned long)pfn;
+ m = min(m, find_first_bit(&tmp, sizeof(tmp)));
+ skip = 1 << m;
+ mask = skip - 1;
+ base = pfn;
+ p = 0;
+ } else {
+ if (base + p != pfn) {
+ tmp = (unsigned long)p;
+ m = find_first_bit(&tmp, sizeof(tmp));
+ skip = 1 << m;
+ mask = skip - 1;
+ base = pfn;
+ p = 0;
+ }
+ }
+ p++;
+ i++;
+ }
+ }
+
+ if (i) {
+ m = min_t(unsigned long, ilog2(roundup_pow_of_two(i)), m);
+
+ if (order)
+ *order = ilog2(roundup_pow_of_two(i) >> m);
+
+ *ncont = DIV_ROUND_UP(i, (1 << m));
+ } else {
+ m = 0;
+
+ if (order)
+ *order = 0;
+
+ *ncont = 0;
+ }
+ *shift = PAGE_SHIFT + m;
+ *count = i;
+}
+
+void mlx5_ib_populate_pas(struct mlx5_ib_dev *dev, struct ib_umem *umem,
+ int page_shift, __be64 *pas, int umr)
+{
+ int shift = page_shift - PAGE_SHIFT;
+ int mask = (1 << shift) - 1;
+ struct ib_umem_chunk *chunk;
+ int i, j, k;
+ u64 cur = 0;
+ u64 base;
+ int len;
+
+ i = 0;
+ list_for_each_entry(chunk, &umem->chunk_list, list)
+ for (j = 0; j < chunk->nmap; j++) {
+ len = sg_dma_len(&chunk->page_list[j]) >> PAGE_SHIFT;
+ base = sg_dma_address(&chunk->page_list[j]);
+ for (k = 0; k < len; k++) {
+ if (!(i & mask)) {
+ cur = base + (k << PAGE_SHIFT);
+ if (umr)
+ cur |= 3;
+
+ pas[i >> shift] = cpu_to_be64(cur);
+ mlx5_ib_dbg(dev, "pas[%d] 0x%llx\n",
+ i >> shift, be64_to_cpu(pas[i >> shift]));
+ } else
+ mlx5_ib_dbg(dev, "=====> 0x%llx\n",
+ base + (k << PAGE_SHIFT));
+ i++;
+ }
+ }
+}
+
+int mlx5_ib_get_buf_offset(u64 addr, int page_shift, u32 *offset)
+{
+ u64 page_size;
+ u64 page_mask;
+ u64 off_size;
+ u64 off_mask;
+ u64 buf_off;
+
+ page_size = 1 << page_shift;
+ page_mask = page_size - 1;
+ buf_off = addr & page_mask;
+ off_size = page_size >> 6;
+ off_mask = off_size - 1;
+
+ if (buf_off & off_mask)
+ return -EINVAL;
+
+ *offset = buf_off >> ilog2(off_size);
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef MLX5_IB_H
+#define MLX5_IB_H
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_smi.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cq.h>
+#include <linux/mlx5/qp.h>
+#include <linux/mlx5/srq.h>
+#include <linux/types.h>
+
+#define mlx5_ib_dbg(dev, format, arg...) \
+pr_debug("%s:%s:%d:(pid %d): " format, (dev)->ib_dev.name, __func__, \
+ __LINE__, current->pid, ##arg)
+
+#define mlx5_ib_err(dev, format, arg...) \
+pr_err("%s:%s:%d:(pid %d): " format, (dev)->ib_dev.name, __func__, \
+ __LINE__, current->pid, ##arg)
+
+#define mlx5_ib_warn(dev, format, arg...) \
+pr_warn("%s:%s:%d:(pid %d): " format, (dev)->ib_dev.name, __func__, \
+ __LINE__, current->pid, ##arg)
+
+enum {
+ MLX5_IB_MMAP_CMD_SHIFT = 8,
+ MLX5_IB_MMAP_CMD_MASK = 0xff,
+};
+
+enum mlx5_ib_mmap_cmd {
+ MLX5_IB_MMAP_REGULAR_PAGE = 0,
+ MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES = 1, /* always last */
+};
+
+enum {
+ MLX5_RES_SCAT_DATA32_CQE = 0x1,
+ MLX5_RES_SCAT_DATA64_CQE = 0x2,
+ MLX5_REQ_SCAT_DATA32_CQE = 0x11,
+ MLX5_REQ_SCAT_DATA64_CQE = 0x22,
+};
+
+enum mlx5_ib_latency_class {
+ MLX5_IB_LATENCY_CLASS_LOW,
+ MLX5_IB_LATENCY_CLASS_MEDIUM,
+ MLX5_IB_LATENCY_CLASS_HIGH,
+ MLX5_IB_LATENCY_CLASS_FAST_PATH
+};
+
+enum mlx5_ib_mad_ifc_flags {
+ MLX5_MAD_IFC_IGNORE_MKEY = 1,
+ MLX5_MAD_IFC_IGNORE_BKEY = 2,
+ MLX5_MAD_IFC_NET_VIEW = 4,
+};
+
+struct mlx5_ib_ucontext {
+ struct ib_ucontext ibucontext;
+ struct list_head db_page_list;
+
+ /* protect doorbell record alloc/free
+ */
+ struct mutex db_page_mutex;
+ struct mlx5_uuar_info uuari;
+};
+
+static inline struct mlx5_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
+{
+ return container_of(ibucontext, struct mlx5_ib_ucontext, ibucontext);
+}
+
+struct mlx5_ib_pd {
+ struct ib_pd ibpd;
+ u32 pdn;
+ u32 pa_lkey;
+};
+
+/* Use macros here so that don't have to duplicate
+ * enum ib_send_flags and enum ib_qp_type for low-level driver
+ */
+
+#define MLX5_IB_SEND_UMR_UNREG IB_SEND_RESERVED_START
+#define MLX5_IB_QPT_REG_UMR IB_QPT_RESERVED1
+#define MLX5_IB_WR_UMR IB_WR_RESERVED1
+
+struct wr_list {
+ u16 opcode;
+ u16 next;
+};
+
+struct mlx5_ib_wq {
+ u64 *wrid;
+ u32 *wr_data;
+ struct wr_list *w_list;
+ unsigned *wqe_head;
+ u16 unsig_count;
+
+ /* serialize post to the work queue
+ */
+ spinlock_t lock;
+ int wqe_cnt;
+ int max_post;
+ int max_gs;
+ int offset;
+ int wqe_shift;
+ unsigned head;
+ unsigned tail;
+ u16 cur_post;
+ u16 last_poll;
+ void *qend;
+};
+
+enum {
+ MLX5_QP_USER,
+ MLX5_QP_KERNEL,
+ MLX5_QP_EMPTY
+};
+
+struct mlx5_ib_qp {
+ struct ib_qp ibqp;
+ struct mlx5_core_qp mqp;
+ struct mlx5_buf buf;
+
+ struct mlx5_db db;
+ struct mlx5_ib_wq rq;
+
+ u32 doorbell_qpn;
+ u8 sq_signal_bits;
+ u8 fm_cache;
+ int sq_max_wqes_per_wr;
+ int sq_spare_wqes;
+ struct mlx5_ib_wq sq;
+
+ struct ib_umem *umem;
+ int buf_size;
+
+ /* serialize qp state modifications
+ */
+ struct mutex mutex;
+ u16 xrcdn;
+ u32 flags;
+ u8 port;
+ u8 alt_port;
+ u8 atomic_rd_en;
+ u8 resp_depth;
+ u8 state;
+ int mlx_type;
+ int wq_sig;
+ int scat_cqe;
+ int max_inline_data;
+ struct mlx5_bf *bf;
+ int has_rq;
+
+ /* only for user space QPs. For kernel
+ * we have it from the bf object
+ */
+ int uuarn;
+
+ int create_type;
+ u32 pa_lkey;
+};
+
+struct mlx5_ib_cq_buf {
+ struct mlx5_buf buf;
+ struct ib_umem *umem;
+ int cqe_size;
+};
+
+enum mlx5_ib_qp_flags {
+ MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK = 1 << 0,
+ MLX5_IB_QP_SIGNATURE_HANDLING = 1 << 1,
+};
+
+struct mlx5_shared_mr_info {
+ int mr_id;
+ struct ib_umem *umem;
+};
+
+struct mlx5_ib_cq {
+ struct ib_cq ibcq;
+ struct mlx5_core_cq mcq;
+ struct mlx5_ib_cq_buf buf;
+ struct mlx5_db db;
+
+ /* serialize access to the CQ
+ */
+ spinlock_t lock;
+
+ /* protect resize cq
+ */
+ struct mutex resize_mutex;
+ struct mlx5_ib_cq_resize *resize_buf;
+ struct ib_umem *resize_umem;
+ int cqe_size;
+};
+
+struct mlx5_ib_srq {
+ struct ib_srq ibsrq;
+ struct mlx5_core_srq msrq;
+ struct mlx5_buf buf;
+ struct mlx5_db db;
+ u64 *wrid;
+ /* protect SRQ hanlding
+ */
+ spinlock_t lock;
+ int head;
+ int tail;
+ u16 wqe_ctr;
+ struct ib_umem *umem;
+ /* serialize arming a SRQ
+ */
+ struct mutex mutex;
+ int wq_sig;
+};
+
+struct mlx5_ib_xrcd {
+ struct ib_xrcd ibxrcd;
+ u32 xrcdn;
+};
+
+struct mlx5_ib_mr {
+ struct ib_mr ibmr;
+ struct mlx5_core_mr mmr;
+ struct ib_umem *umem;
+ struct mlx5_shared_mr_info *smr_info;
+ struct list_head list;
+ int order;
+ int umred;
+ __be64 *pas;
+ dma_addr_t dma;
+ int npages;
+ struct completion done;
+ enum ib_wc_status status;
+};
+
+struct mlx5_ib_fast_reg_page_list {
+ struct ib_fast_reg_page_list ibfrpl;
+ __be64 *mapped_page_list;
+ dma_addr_t map;
+};
+
+struct umr_common {
+ struct ib_pd *pd;
+ struct ib_cq *cq;
+ struct ib_qp *qp;
+ struct ib_mr *mr;
+ /* control access to UMR QP
+ */
+ struct semaphore sem;
+};
+
+enum {
+ MLX5_FMR_INVALID,
+ MLX5_FMR_VALID,
+ MLX5_FMR_BUSY,
+};
+
+struct mlx5_ib_fmr {
+ struct ib_fmr ibfmr;
+ struct mlx5_core_mr mr;
+ int access_flags;
+ int state;
+ /* protect fmr state
+ */
+ spinlock_t lock;
+ u64 wrid;
+ struct ib_send_wr wr[2];
+ u8 page_shift;
+ struct ib_fast_reg_page_list page_list;
+};
+
+struct mlx5_cache_ent {
+ struct list_head head;
+ /* sync access to the cahce entry
+ */
+ spinlock_t lock;
+
+
+ struct dentry *dir;
+ char name[4];
+ u32 order;
+ u32 size;
+ u32 cur;
+ u32 miss;
+ u32 limit;
+
+ struct dentry *fsize;
+ struct dentry *fcur;
+ struct dentry *fmiss;
+ struct dentry *flimit;
+
+ struct mlx5_ib_dev *dev;
+ struct work_struct work;
+ struct delayed_work dwork;
+};
+
+struct mlx5_mr_cache {
+ struct workqueue_struct *wq;
+ struct mlx5_cache_ent ent[MAX_MR_CACHE_ENTRIES];
+ int stopped;
+ struct dentry *root;
+ unsigned long last_add;
+};
+
+struct mlx5_ib_resources {
+ struct ib_cq *c0;
+ struct ib_xrcd *x0;
+ struct ib_xrcd *x1;
+ struct ib_pd *p0;
+ struct ib_srq *s0;
+};
+
+struct mlx5_ib_dev {
+ struct ib_device ib_dev;
+ struct mlx5_core_dev mdev;
+ MLX5_DECLARE_DOORBELL_LOCK(uar_lock);
+ struct list_head eqs_list;
+ int num_ports;
+ int num_comp_vectors;
+ /* serialize update of capability mask
+ */
+ struct mutex cap_mask_mutex;
+ bool ib_active;
+ struct umr_common umrc;
+ /* sync used page count stats
+ */
+ spinlock_t mr_lock;
+ struct mlx5_ib_resources devr;
+ struct mlx5_mr_cache cache;
+};
+
+static inline struct mlx5_ib_cq *to_mibcq(struct mlx5_core_cq *mcq)
+{
+ return container_of(mcq, struct mlx5_ib_cq, mcq);
+}
+
+static inline struct mlx5_ib_xrcd *to_mxrcd(struct ib_xrcd *ibxrcd)
+{
+ return container_of(ibxrcd, struct mlx5_ib_xrcd, ibxrcd);
+}
+
+static inline struct mlx5_ib_dev *to_mdev(struct ib_device *ibdev)
+{
+ return container_of(ibdev, struct mlx5_ib_dev, ib_dev);
+}
+
+static inline struct mlx5_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
+{
+ return container_of(ibfmr, struct mlx5_ib_fmr, ibfmr);
+}
+
+static inline struct mlx5_ib_cq *to_mcq(struct ib_cq *ibcq)
+{
+ return container_of(ibcq, struct mlx5_ib_cq, ibcq);
+}
+
+static inline struct mlx5_ib_qp *to_mibqp(struct mlx5_core_qp *mqp)
+{
+ return container_of(mqp, struct mlx5_ib_qp, mqp);
+}
+
+static inline struct mlx5_ib_pd *to_mpd(struct ib_pd *ibpd)
+{
+ return container_of(ibpd, struct mlx5_ib_pd, ibpd);
+}
+
+static inline struct mlx5_ib_srq *to_msrq(struct ib_srq *ibsrq)
+{
+ return container_of(ibsrq, struct mlx5_ib_srq, ibsrq);
+}
+
+static inline struct mlx5_ib_qp *to_mqp(struct ib_qp *ibqp)
+{
+ return container_of(ibqp, struct mlx5_ib_qp, ibqp);
+}
+
+static inline struct mlx5_ib_srq *to_mibsrq(struct mlx5_core_srq *msrq)
+{
+ return container_of(msrq, struct mlx5_ib_srq, msrq);
+}
+
+static inline struct mlx5_ib_mr *to_mmr(struct ib_mr *ibmr)
+{
+ return container_of(ibmr, struct mlx5_ib_mr, ibmr);
+}
+
+static inline struct mlx5_ib_fast_reg_page_list *to_mfrpl(struct ib_fast_reg_page_list *ibfrpl)
+{
+ return container_of(ibfrpl, struct mlx5_ib_fast_reg_page_list, ibfrpl);
+}
+
+struct mlx5_ib_ah {
+ struct ib_ah ibah;
+ struct mlx5_av av;
+};
+
+static inline struct mlx5_ib_ah *to_mah(struct ib_ah *ibah)
+{
+ return container_of(ibah, struct mlx5_ib_ah, ibah);
+}
+
+static inline struct mlx5_ib_dev *mlx5_core2ibdev(struct mlx5_core_dev *dev)
+{
+ return container_of(dev, struct mlx5_ib_dev, mdev);
+}
+
+static inline struct mlx5_ib_dev *mlx5_pci2ibdev(struct pci_dev *pdev)
+{
+ return mlx5_core2ibdev(pci2mlx5_core_dev(pdev));
+}
+
+int mlx5_ib_db_map_user(struct mlx5_ib_ucontext *context, unsigned long virt,
+ struct mlx5_db *db);
+void mlx5_ib_db_unmap_user(struct mlx5_ib_ucontext *context, struct mlx5_db *db);
+void __mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 qpn, struct mlx5_ib_srq *srq);
+void mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 qpn, struct mlx5_ib_srq *srq);
+void mlx5_ib_free_srq_wqe(struct mlx5_ib_srq *srq, int wqe_index);
+int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey, int ignore_bkey,
+ int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
+ void *in_mad, void *response_mad);
+struct ib_ah *create_ib_ah(struct ib_ah_attr *ah_attr,
+ struct mlx5_ib_ah *ah);
+struct ib_ah *mlx5_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
+int mlx5_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
+int mlx5_ib_destroy_ah(struct ib_ah *ah);
+struct ib_srq *mlx5_ib_create_srq(struct ib_pd *pd,
+ struct ib_srq_init_attr *init_attr,
+ struct ib_udata *udata);
+int mlx5_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
+ enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
+int mlx5_ib_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr);
+int mlx5_ib_destroy_srq(struct ib_srq *srq);
+int mlx5_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
+ struct ib_recv_wr **bad_wr);
+struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd,
+ struct ib_qp_init_attr *init_attr,
+ struct ib_udata *udata);
+int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+ int attr_mask, struct ib_udata *udata);
+int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
+ struct ib_qp_init_attr *qp_init_attr);
+int mlx5_ib_destroy_qp(struct ib_qp *qp);
+int mlx5_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
+ struct ib_send_wr **bad_wr);
+int mlx5_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
+ struct ib_recv_wr **bad_wr);
+void *mlx5_get_send_wqe(struct mlx5_ib_qp *qp, int n);
+struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev, int entries,
+ int vector, struct ib_ucontext *context,
+ struct ib_udata *udata);
+int mlx5_ib_destroy_cq(struct ib_cq *cq);
+int mlx5_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
+int mlx5_ib_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);
+int mlx5_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
+int mlx5_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
+struct ib_mr *mlx5_ib_get_dma_mr(struct ib_pd *pd, int acc);
+struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
+ u64 virt_addr, int access_flags,
+ struct ib_udata *udata);
+int mlx5_ib_dereg_mr(struct ib_mr *ibmr);
+struct ib_mr *mlx5_ib_alloc_fast_reg_mr(struct ib_pd *pd,
+ int max_page_list_len);
+struct ib_fast_reg_page_list *mlx5_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
+ int page_list_len);
+void mlx5_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
+struct ib_fmr *mlx5_ib_fmr_alloc(struct ib_pd *pd, int acc,
+ struct ib_fmr_attr *fmr_attr);
+int mlx5_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
+ int npages, u64 iova);
+int mlx5_ib_unmap_fmr(struct list_head *fmr_list);
+int mlx5_ib_fmr_dealloc(struct ib_fmr *ibfmr);
+int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
+ struct ib_wc *in_wc, struct ib_grh *in_grh,
+ struct ib_mad *in_mad, struct ib_mad *out_mad);
+struct ib_xrcd *mlx5_ib_alloc_xrcd(struct ib_device *ibdev,
+ struct ib_ucontext *context,
+ struct ib_udata *udata);
+int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd);
+int mlx5_vector2eqn(struct mlx5_ib_dev *dev, int vector, int *eqn, int *irqn);
+int mlx5_ib_get_buf_offset(u64 addr, int page_shift, u32 *offset);
+int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port);
+int mlx5_ib_query_port(struct ib_device *ibdev, u8 port,
+ struct ib_port_attr *props);
+int mlx5_ib_init_fmr(struct mlx5_ib_dev *dev);
+void mlx5_ib_cleanup_fmr(struct mlx5_ib_dev *dev);
+void mlx5_ib_cont_pages(struct ib_umem *umem, u64 addr, int *count, int *shift,
+ int *ncont, int *order);
+void mlx5_ib_populate_pas(struct mlx5_ib_dev *dev, struct ib_umem *umem,
+ int page_shift, __be64 *pas, int umr);
+void mlx5_ib_copy_pas(u64 *old, u64 *new, int step, int num);
+int mlx5_ib_get_cqe_size(struct mlx5_ib_dev *dev, struct ib_cq *ibcq);
+int mlx5_mr_cache_init(struct mlx5_ib_dev *dev);
+int mlx5_mr_cache_cleanup(struct mlx5_ib_dev *dev);
+int mlx5_mr_ib_cont_pages(struct ib_umem *umem, u64 addr, int *count, int *shift);
+void mlx5_umr_cq_handler(struct ib_cq *cq, void *cq_context);
+
+static inline void init_query_mad(struct ib_smp *mad)
+{
+ mad->base_version = 1;
+ mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
+ mad->class_version = 1;
+ mad->method = IB_MGMT_METHOD_GET;
+}
+
+static inline u8 convert_access(int acc)
+{
+ return (acc & IB_ACCESS_REMOTE_ATOMIC ? MLX5_PERM_ATOMIC : 0) |
+ (acc & IB_ACCESS_REMOTE_WRITE ? MLX5_PERM_REMOTE_WRITE : 0) |
+ (acc & IB_ACCESS_REMOTE_READ ? MLX5_PERM_REMOTE_READ : 0) |
+ (acc & IB_ACCESS_LOCAL_WRITE ? MLX5_PERM_LOCAL_WRITE : 0) |
+ MLX5_PERM_LOCAL_READ;
+}
+
+#endif /* MLX5_IB_H */
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+
+#include <linux/kref.h>
+#include <linux/random.h>
+#include <linux/debugfs.h>
+#include <linux/export.h>
+#include <rdma/ib_umem.h>
+#include "mlx5_ib.h"
+
+enum {
+ DEF_CACHE_SIZE = 10,
+};
+
+static __be64 *mr_align(__be64 *ptr, int align)
+{
+ unsigned long mask = align - 1;
+
+ return (__be64 *)(((unsigned long)ptr + mask) & ~mask);
+}
+
+static int order2idx(struct mlx5_ib_dev *dev, int order)
+{
+ struct mlx5_mr_cache *cache = &dev->cache;
+
+ if (order < cache->ent[0].order)
+ return 0;
+ else
+ return order - cache->ent[0].order;
+}
+
+static int add_keys(struct mlx5_ib_dev *dev, int c, int num)
+{
+ struct device *ddev = dev->ib_dev.dma_device;
+ struct mlx5_mr_cache *cache = &dev->cache;
+ struct mlx5_cache_ent *ent = &cache->ent[c];
+ struct mlx5_create_mkey_mbox_in *in;
+ struct mlx5_ib_mr *mr;
+ int npages = 1 << ent->order;
+ int size = sizeof(u64) * npages;
+ int err = 0;
+ int i;
+
+ in = kzalloc(sizeof(*in), GFP_KERNEL);
+ if (!in)
+ return -ENOMEM;
+
+ for (i = 0; i < num; i++) {
+ mr = kzalloc(sizeof(*mr), GFP_KERNEL);
+ if (!mr) {
+ err = -ENOMEM;
+ goto out;
+ }
+ mr->order = ent->order;
+ mr->umred = 1;
+ mr->pas = kmalloc(size + 0x3f, GFP_KERNEL);
+ if (!mr->pas) {
+ kfree(mr);
+ err = -ENOMEM;
+ goto out;
+ }
+ mr->dma = dma_map_single(ddev, mr_align(mr->pas, 0x40), size,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(ddev, mr->dma)) {
+ kfree(mr->pas);
+ kfree(mr);
+ err = -ENOMEM;
+ goto out;
+ }
+
+ in->seg.status = 1 << 6;
+ in->seg.xlt_oct_size = cpu_to_be32((npages + 1) / 2);
+ in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
+ in->seg.flags = MLX5_ACCESS_MODE_MTT | MLX5_PERM_UMR_EN;
+ in->seg.log2_page_size = 12;
+
+ err = mlx5_core_create_mkey(&dev->mdev, &mr->mmr, in,
+ sizeof(*in));
+ if (err) {
+ mlx5_ib_warn(dev, "create mkey failed %d\n", err);
+ dma_unmap_single(ddev, mr->dma, size, DMA_TO_DEVICE);
+ kfree(mr->pas);
+ kfree(mr);
+ goto out;
+ }
+ cache->last_add = jiffies;
+
+ spin_lock(&ent->lock);
+ list_add_tail(&mr->list, &ent->head);
+ ent->cur++;
+ ent->size++;
+ spin_unlock(&ent->lock);
+ }
+
+out:
+ kfree(in);
+ return err;
+}
+
+static void remove_keys(struct mlx5_ib_dev *dev, int c, int num)
+{
+ struct device *ddev = dev->ib_dev.dma_device;
+ struct mlx5_mr_cache *cache = &dev->cache;
+ struct mlx5_cache_ent *ent = &cache->ent[c];
+ struct mlx5_ib_mr *mr;
+ int size;
+ int err;
+ int i;
+
+ for (i = 0; i < num; i++) {
+ spin_lock(&ent->lock);
+ if (list_empty(&ent->head)) {
+ spin_unlock(&ent->lock);
+ return;
+ }
+ mr = list_first_entry(&ent->head, struct mlx5_ib_mr, list);
+ list_del(&mr->list);
+ ent->cur--;
+ ent->size--;
+ spin_unlock(&ent->lock);
+ err = mlx5_core_destroy_mkey(&dev->mdev, &mr->mmr);
+ if (err) {
+ mlx5_ib_warn(dev, "failed destroy mkey\n");
+ } else {
+ size = ALIGN(sizeof(u64) * (1 << mr->order), 0x40);
+ dma_unmap_single(ddev, mr->dma, size, DMA_TO_DEVICE);
+ kfree(mr->pas);
+ kfree(mr);
+ }
+ }
+}
+
+static ssize_t size_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct mlx5_cache_ent *ent = filp->private_data;
+ struct mlx5_ib_dev *dev = ent->dev;
+ char lbuf[20];
+ u32 var;
+ int err;
+ int c;
+
+ if (copy_from_user(lbuf, buf, sizeof(lbuf)))
+ return -EPERM;
+
+ c = order2idx(dev, ent->order);
+ lbuf[sizeof(lbuf) - 1] = 0;
+
+ if (sscanf(lbuf, "%u", &var) != 1)
+ return -EINVAL;
+
+ if (var < ent->limit)
+ return -EINVAL;
+
+ if (var > ent->size) {
+ err = add_keys(dev, c, var - ent->size);
+ if (err)
+ return err;
+ } else if (var < ent->size) {
+ remove_keys(dev, c, ent->size - var);
+ }
+
+ return count;
+}
+
+static ssize_t size_read(struct file *filp, char __user *buf, size_t count,
+ loff_t *pos)
+{
+ struct mlx5_cache_ent *ent = filp->private_data;
+ char lbuf[20];
+ int err;
+
+ if (*pos)
+ return 0;
+
+ err = snprintf(lbuf, sizeof(lbuf), "%d\n", ent->size);
+ if (err < 0)
+ return err;
+
+ if (copy_to_user(buf, lbuf, err))
+ return -EPERM;
+
+ *pos += err;
+
+ return err;
+}
+
+static const struct file_operations size_fops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .write = size_write,
+ .read = size_read,
+};
+
+static ssize_t limit_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct mlx5_cache_ent *ent = filp->private_data;
+ struct mlx5_ib_dev *dev = ent->dev;
+ char lbuf[20];
+ u32 var;
+ int err;
+ int c;
+
+ if (copy_from_user(lbuf, buf, sizeof(lbuf)))
+ return -EPERM;
+
+ c = order2idx(dev, ent->order);
+ lbuf[sizeof(lbuf) - 1] = 0;
+
+ if (sscanf(lbuf, "%u", &var) != 1)
+ return -EINVAL;
+
+ if (var > ent->size)
+ return -EINVAL;
+
+ ent->limit = var;
+
+ if (ent->cur < ent->limit) {
+ err = add_keys(dev, c, 2 * ent->limit - ent->cur);
+ if (err)
+ return err;
+ }
+
+ return count;
+}
+
+static ssize_t limit_read(struct file *filp, char __user *buf, size_t count,
+ loff_t *pos)
+{
+ struct mlx5_cache_ent *ent = filp->private_data;
+ char lbuf[20];
+ int err;
+
+ if (*pos)
+ return 0;
+
+ err = snprintf(lbuf, sizeof(lbuf), "%d\n", ent->limit);
+ if (err < 0)
+ return err;
+
+ if (copy_to_user(buf, lbuf, err))
+ return -EPERM;
+
+ *pos += err;
+
+ return err;
+}
+
+static const struct file_operations limit_fops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .write = limit_write,
+ .read = limit_read,
+};
+
+static int someone_adding(struct mlx5_mr_cache *cache)
+{
+ int i;
+
+ for (i = 0; i < MAX_MR_CACHE_ENTRIES; i++) {
+ if (cache->ent[i].cur < cache->ent[i].limit)
+ return 1;
+ }
+
+ return 0;
+}
+
+static void __cache_work_func(struct mlx5_cache_ent *ent)
+{
+ struct mlx5_ib_dev *dev = ent->dev;
+ struct mlx5_mr_cache *cache = &dev->cache;
+ int i = order2idx(dev, ent->order);
+
+ if (cache->stopped)
+ return;
+
+ ent = &dev->cache.ent[i];
+ if (ent->cur < 2 * ent->limit) {
+ add_keys(dev, i, 1);
+ if (ent->cur < 2 * ent->limit)
+ queue_work(cache->wq, &ent->work);
+ } else if (ent->cur > 2 * ent->limit) {
+ if (!someone_adding(cache) &&
+ time_after(jiffies, cache->last_add + 60 * HZ)) {
+ remove_keys(dev, i, 1);
+ if (ent->cur > ent->limit)
+ queue_work(cache->wq, &ent->work);
+ } else {
+ queue_delayed_work(cache->wq, &ent->dwork, 60 * HZ);
+ }
+ }
+}
+
+static void delayed_cache_work_func(struct work_struct *work)
+{
+ struct mlx5_cache_ent *ent;
+
+ ent = container_of(work, struct mlx5_cache_ent, dwork.work);
+ __cache_work_func(ent);
+}
+
+static void cache_work_func(struct work_struct *work)
+{
+ struct mlx5_cache_ent *ent;
+
+ ent = container_of(work, struct mlx5_cache_ent, work);
+ __cache_work_func(ent);
+}
+
+static struct mlx5_ib_mr *alloc_cached_mr(struct mlx5_ib_dev *dev, int order)
+{
+ struct mlx5_mr_cache *cache = &dev->cache;
+ struct mlx5_ib_mr *mr = NULL;
+ struct mlx5_cache_ent *ent;
+ int c;
+ int i;
+
+ c = order2idx(dev, order);
+ if (c < 0 || c >= MAX_MR_CACHE_ENTRIES) {
+ mlx5_ib_warn(dev, "order %d, cache index %d\n", order, c);
+ return NULL;
+ }
+
+ for (i = c; i < MAX_MR_CACHE_ENTRIES; i++) {
+ ent = &cache->ent[i];
+
+ mlx5_ib_dbg(dev, "order %d, cache index %d\n", ent->order, i);
+
+ spin_lock(&ent->lock);
+ if (!list_empty(&ent->head)) {
+ mr = list_first_entry(&ent->head, struct mlx5_ib_mr,
+ list);
+ list_del(&mr->list);
+ ent->cur--;
+ spin_unlock(&ent->lock);
+ if (ent->cur < ent->limit)
+ queue_work(cache->wq, &ent->work);
+ break;
+ }
+ spin_unlock(&ent->lock);
+
+ queue_work(cache->wq, &ent->work);
+
+ if (mr)
+ break;
+ }
+
+ if (!mr)
+ cache->ent[c].miss++;
+
+ return mr;
+}
+
+static void free_cached_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr)
+{
+ struct mlx5_mr_cache *cache = &dev->cache;
+ struct mlx5_cache_ent *ent;
+ int shrink = 0;
+ int c;
+
+ c = order2idx(dev, mr->order);
+ if (c < 0 || c >= MAX_MR_CACHE_ENTRIES) {
+ mlx5_ib_warn(dev, "order %d, cache index %d\n", mr->order, c);
+ return;
+ }
+ ent = &cache->ent[c];
+ spin_lock(&ent->lock);
+ list_add_tail(&mr->list, &ent->head);
+ ent->cur++;
+ if (ent->cur > 2 * ent->limit)
+ shrink = 1;
+ spin_unlock(&ent->lock);
+
+ if (shrink)
+ queue_work(cache->wq, &ent->work);
+}
+
+static void clean_keys(struct mlx5_ib_dev *dev, int c)
+{
+ struct device *ddev = dev->ib_dev.dma_device;
+ struct mlx5_mr_cache *cache = &dev->cache;
+ struct mlx5_cache_ent *ent = &cache->ent[c];
+ struct mlx5_ib_mr *mr;
+ int size;
+ int err;
+
+ while (1) {
+ spin_lock(&ent->lock);
+ if (list_empty(&ent->head)) {
+ spin_unlock(&ent->lock);
+ return;
+ }
+ mr = list_first_entry(&ent->head, struct mlx5_ib_mr, list);
+ list_del(&mr->list);
+ ent->cur--;
+ ent->size--;
+ spin_unlock(&ent->lock);
+ err = mlx5_core_destroy_mkey(&dev->mdev, &mr->mmr);
+ if (err) {
+ mlx5_ib_warn(dev, "failed destroy mkey\n");
+ } else {
+ size = ALIGN(sizeof(u64) * (1 << mr->order), 0x40);
+ dma_unmap_single(ddev, mr->dma, size, DMA_TO_DEVICE);
+ kfree(mr->pas);
+ kfree(mr);
+ }
+ }
+}
+
+static int mlx5_mr_cache_debugfs_init(struct mlx5_ib_dev *dev)
+{
+ struct mlx5_mr_cache *cache = &dev->cache;
+ struct mlx5_cache_ent *ent;
+ int i;
+
+ if (!mlx5_debugfs_root)
+ return 0;
+
+ cache->root = debugfs_create_dir("mr_cache", dev->mdev.priv.dbg_root);
+ if (!cache->root)
+ return -ENOMEM;
+
+ for (i = 0; i < MAX_MR_CACHE_ENTRIES; i++) {
+ ent = &cache->ent[i];
+ sprintf(ent->name, "%d", ent->order);
+ ent->dir = debugfs_create_dir(ent->name, cache->root);
+ if (!ent->dir)
+ return -ENOMEM;
+
+ ent->fsize = debugfs_create_file("size", 0600, ent->dir, ent,
+ &size_fops);
+ if (!ent->fsize)
+ return -ENOMEM;
+
+ ent->flimit = debugfs_create_file("limit", 0600, ent->dir, ent,
+ &limit_fops);
+ if (!ent->flimit)
+ return -ENOMEM;
+
+ ent->fcur = debugfs_create_u32("cur", 0400, ent->dir,
+ &ent->cur);
+ if (!ent->fcur)
+ return -ENOMEM;
+
+ ent->fmiss = debugfs_create_u32("miss", 0600, ent->dir,
+ &ent->miss);
+ if (!ent->fmiss)
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static void mlx5_mr_cache_debugfs_cleanup(struct mlx5_ib_dev *dev)
+{
+ if (!mlx5_debugfs_root)
+ return;
+
+ debugfs_remove_recursive(dev->cache.root);
+}
+
+int mlx5_mr_cache_init(struct mlx5_ib_dev *dev)
+{
+ struct mlx5_mr_cache *cache = &dev->cache;
+ struct mlx5_cache_ent *ent;
+ int limit;
+ int size;
+ int err;
+ int i;
+
+ cache->wq = create_singlethread_workqueue("mkey_cache");
+ if (!cache->wq) {
+ mlx5_ib_warn(dev, "failed to create work queue\n");
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < MAX_MR_CACHE_ENTRIES; i++) {
+ INIT_LIST_HEAD(&cache->ent[i].head);
+ spin_lock_init(&cache->ent[i].lock);
+
+ ent = &cache->ent[i];
+ INIT_LIST_HEAD(&ent->head);
+ spin_lock_init(&ent->lock);
+ ent->order = i + 2;
+ ent->dev = dev;
+
+ if (dev->mdev.profile->mask & MLX5_PROF_MASK_MR_CACHE) {
+ size = dev->mdev.profile->mr_cache[i].size;
+ limit = dev->mdev.profile->mr_cache[i].limit;
+ } else {
+ size = DEF_CACHE_SIZE;
+ limit = 0;
+ }
+ INIT_WORK(&ent->work, cache_work_func);
+ INIT_DELAYED_WORK(&ent->dwork, delayed_cache_work_func);
+ ent->limit = limit;
+ queue_work(cache->wq, &ent->work);
+ }
+
+ err = mlx5_mr_cache_debugfs_init(dev);
+ if (err)
+ mlx5_ib_warn(dev, "cache debugfs failure\n");
+
+ return 0;
+}
+
+int mlx5_mr_cache_cleanup(struct mlx5_ib_dev *dev)
+{
+ int i;
+
+ dev->cache.stopped = 1;
+ destroy_workqueue(dev->cache.wq);
+
+ mlx5_mr_cache_debugfs_cleanup(dev);
+
+ for (i = 0; i < MAX_MR_CACHE_ENTRIES; i++)
+ clean_keys(dev, i);
+
+ return 0;
+}
+
+struct ib_mr *mlx5_ib_get_dma_mr(struct ib_pd *pd, int acc)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ struct mlx5_core_dev *mdev = &dev->mdev;
+ struct mlx5_create_mkey_mbox_in *in;
+ struct mlx5_mkey_seg *seg;
+ struct mlx5_ib_mr *mr;
+ int err;
+
+ mr = kzalloc(sizeof(*mr), GFP_KERNEL);
+ if (!mr)
+ return ERR_PTR(-ENOMEM);
+
+ in = kzalloc(sizeof(*in), GFP_KERNEL);
+ if (!in) {
+ err = -ENOMEM;
+ goto err_free;
+ }
+
+ seg = &in->seg;
+ seg->flags = convert_access(acc) | MLX5_ACCESS_MODE_PA;
+ seg->flags_pd = cpu_to_be32(to_mpd(pd)->pdn | MLX5_MKEY_LEN64);
+ seg->qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
+ seg->start_addr = 0;
+
+ err = mlx5_core_create_mkey(mdev, &mr->mmr, in, sizeof(*in));
+ if (err)
+ goto err_in;
+
+ kfree(in);
+ mr->ibmr.lkey = mr->mmr.key;
+ mr->ibmr.rkey = mr->mmr.key;
+ mr->umem = NULL;
+
+ return &mr->ibmr;
+
+err_in:
+ kfree(in);
+
+err_free:
+ kfree(mr);
+
+ return ERR_PTR(err);
+}
+
+static int get_octo_len(u64 addr, u64 len, int page_size)
+{
+ u64 offset;
+ int npages;
+
+ offset = addr & (page_size - 1);
+ npages = ALIGN(len + offset, page_size) >> ilog2(page_size);
+ return (npages + 1) / 2;
+}
+
+static int use_umr(int order)
+{
+ return order <= 17;
+}
+
+static void prep_umr_reg_wqe(struct ib_pd *pd, struct ib_send_wr *wr,
+ struct ib_sge *sg, u64 dma, int n, u32 key,
+ int page_shift, u64 virt_addr, u64 len,
+ int access_flags)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ struct ib_mr *mr = dev->umrc.mr;
+
+ sg->addr = dma;
+ sg->length = ALIGN(sizeof(u64) * n, 64);
+ sg->lkey = mr->lkey;
+
+ wr->next = NULL;
+ wr->send_flags = 0;
+ wr->sg_list = sg;
+ if (n)
+ wr->num_sge = 1;
+ else
+ wr->num_sge = 0;
+
+ wr->opcode = MLX5_IB_WR_UMR;
+ wr->wr.fast_reg.page_list_len = n;
+ wr->wr.fast_reg.page_shift = page_shift;
+ wr->wr.fast_reg.rkey = key;
+ wr->wr.fast_reg.iova_start = virt_addr;
+ wr->wr.fast_reg.length = len;
+ wr->wr.fast_reg.access_flags = access_flags;
+ wr->wr.fast_reg.page_list = (struct ib_fast_reg_page_list *)pd;
+}
+
+static void prep_umr_unreg_wqe(struct mlx5_ib_dev *dev,
+ struct ib_send_wr *wr, u32 key)
+{
+ wr->send_flags = MLX5_IB_SEND_UMR_UNREG;
+ wr->opcode = MLX5_IB_WR_UMR;
+ wr->wr.fast_reg.rkey = key;
+}
+
+void mlx5_umr_cq_handler(struct ib_cq *cq, void *cq_context)
+{
+ struct mlx5_ib_mr *mr;
+ struct ib_wc wc;
+ int err;
+
+ while (1) {
+ err = ib_poll_cq(cq, 1, &wc);
+ if (err < 0) {
+ pr_warn("poll cq error %d\n", err);
+ return;
+ }
+ if (err == 0)
+ break;
+
+ mr = (struct mlx5_ib_mr *)(unsigned long)wc.wr_id;
+ mr->status = wc.status;
+ complete(&mr->done);
+ }
+ ib_req_notify_cq(cq, IB_CQ_NEXT_COMP);
+}
+
+static struct mlx5_ib_mr *reg_umr(struct ib_pd *pd, struct ib_umem *umem,
+ u64 virt_addr, u64 len, int npages,
+ int page_shift, int order, int access_flags)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ struct umr_common *umrc = &dev->umrc;
+ struct ib_send_wr wr, *bad;
+ struct mlx5_ib_mr *mr;
+ struct ib_sge sg;
+ int err;
+ int i;
+
+ for (i = 0; i < 10; i++) {
+ mr = alloc_cached_mr(dev, order);
+ if (mr)
+ break;
+
+ err = add_keys(dev, order2idx(dev, order), 1);
+ if (err) {
+ mlx5_ib_warn(dev, "add_keys failed\n");
+ break;
+ }
+ }
+
+ if (!mr)
+ return ERR_PTR(-EAGAIN);
+
+ mlx5_ib_populate_pas(dev, umem, page_shift, mr_align(mr->pas, 0x40), 1);
+
+ memset(&wr, 0, sizeof(wr));
+ wr.wr_id = (u64)(unsigned long)mr;
+ prep_umr_reg_wqe(pd, &wr, &sg, mr->dma, npages, mr->mmr.key, page_shift, virt_addr, len, access_flags);
+
+ /* We serialize polls so one process does not kidnap another's
+ * completion. This is not a problem since wr is completed in
+ * around 1 usec
+ */
+ down(&umrc->sem);
+ init_completion(&mr->done);
+ err = ib_post_send(umrc->qp, &wr, &bad);
+ if (err) {
+ mlx5_ib_warn(dev, "post send failed, err %d\n", err);
+ up(&umrc->sem);
+ goto error;
+ }
+ wait_for_completion(&mr->done);
+ up(&umrc->sem);
+
+ if (mr->status != IB_WC_SUCCESS) {
+ mlx5_ib_warn(dev, "reg umr failed\n");
+ err = -EFAULT;
+ goto error;
+ }
+
+ return mr;
+
+error:
+ free_cached_mr(dev, mr);
+ return ERR_PTR(err);
+}
+
+static struct mlx5_ib_mr *reg_create(struct ib_pd *pd, u64 virt_addr,
+ u64 length, struct ib_umem *umem,
+ int npages, int page_shift,
+ int access_flags)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ struct mlx5_create_mkey_mbox_in *in;
+ struct mlx5_ib_mr *mr;
+ int inlen;
+ int err;
+
+ mr = kzalloc(sizeof(*mr), GFP_KERNEL);
+ if (!mr)
+ return ERR_PTR(-ENOMEM);
+
+ inlen = sizeof(*in) + sizeof(*in->pas) * ((npages + 1) / 2) * 2;
+ in = mlx5_vzalloc(inlen);
+ if (!in) {
+ err = -ENOMEM;
+ goto err_1;
+ }
+ mlx5_ib_populate_pas(dev, umem, page_shift, in->pas, 0);
+
+ in->seg.flags = convert_access(access_flags) |
+ MLX5_ACCESS_MODE_MTT;
+ in->seg.flags_pd = cpu_to_be32(to_mpd(pd)->pdn);
+ in->seg.start_addr = cpu_to_be64(virt_addr);
+ in->seg.len = cpu_to_be64(length);
+ in->seg.bsfs_octo_size = 0;
+ in->seg.xlt_oct_size = cpu_to_be32(get_octo_len(virt_addr, length, 1 << page_shift));
+ in->seg.log2_page_size = page_shift;
+ in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
+ in->xlat_oct_act_size = cpu_to_be32(get_octo_len(virt_addr, length, 1 << page_shift));
+ err = mlx5_core_create_mkey(&dev->mdev, &mr->mmr, in, inlen);
+ if (err) {
+ mlx5_ib_warn(dev, "create mkey failed\n");
+ goto err_2;
+ }
+ mr->umem = umem;
+ mlx5_vfree(in);
+
+ mlx5_ib_dbg(dev, "mkey = 0x%x\n", mr->mmr.key);
+
+ return mr;
+
+err_2:
+ mlx5_vfree(in);
+
+err_1:
+ kfree(mr);
+
+ return ERR_PTR(err);
+}
+
+struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
+ u64 virt_addr, int access_flags,
+ struct ib_udata *udata)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ struct mlx5_ib_mr *mr = NULL;
+ struct ib_umem *umem;
+ int page_shift;
+ int npages;
+ int ncont;
+ int order;
+ int err;
+
+ mlx5_ib_dbg(dev, "start 0x%llx, virt_addr 0x%llx, length 0x%llx\n",
+ start, virt_addr, length);
+ umem = ib_umem_get(pd->uobject->context, start, length, access_flags,
+ 0);
+ if (IS_ERR(umem)) {
+ mlx5_ib_dbg(dev, "umem get failed\n");
+ return (void *)umem;
+ }
+
+ mlx5_ib_cont_pages(umem, start, &npages, &page_shift, &ncont, &order);
+ if (!npages) {
+ mlx5_ib_warn(dev, "avoid zero region\n");
+ err = -EINVAL;
+ goto error;
+ }
+
+ mlx5_ib_dbg(dev, "npages %d, ncont %d, order %d, page_shift %d\n",
+ npages, ncont, order, page_shift);
+
+ if (use_umr(order)) {
+ mr = reg_umr(pd, umem, virt_addr, length, ncont, page_shift,
+ order, access_flags);
+ if (PTR_ERR(mr) == -EAGAIN) {
+ mlx5_ib_dbg(dev, "cache empty for order %d", order);
+ mr = NULL;
+ }
+ }
+
+ if (!mr)
+ mr = reg_create(pd, virt_addr, length, umem, ncont, page_shift,
+ access_flags);
+
+ if (IS_ERR(mr)) {
+ err = PTR_ERR(mr);
+ goto error;
+ }
+
+ mlx5_ib_dbg(dev, "mkey 0x%x\n", mr->mmr.key);
+
+ mr->umem = umem;
+ mr->npages = npages;
+ spin_lock(&dev->mr_lock);
+ dev->mdev.priv.reg_pages += npages;
+ spin_unlock(&dev->mr_lock);
+ mr->ibmr.lkey = mr->mmr.key;
+ mr->ibmr.rkey = mr->mmr.key;
+
+ return &mr->ibmr;
+
+error:
+ ib_umem_release(umem);
+ return ERR_PTR(err);
+}
+
+static int unreg_umr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr)
+{
+ struct umr_common *umrc = &dev->umrc;
+ struct ib_send_wr wr, *bad;
+ int err;
+
+ memset(&wr, 0, sizeof(wr));
+ wr.wr_id = (u64)(unsigned long)mr;
+ prep_umr_unreg_wqe(dev, &wr, mr->mmr.key);
+
+ down(&umrc->sem);
+ init_completion(&mr->done);
+ err = ib_post_send(umrc->qp, &wr, &bad);
+ if (err) {
+ up(&umrc->sem);
+ mlx5_ib_dbg(dev, "err %d\n", err);
+ goto error;
+ }
+ wait_for_completion(&mr->done);
+ up(&umrc->sem);
+ if (mr->status != IB_WC_SUCCESS) {
+ mlx5_ib_warn(dev, "unreg umr failed\n");
+ err = -EFAULT;
+ goto error;
+ }
+ return 0;
+
+error:
+ return err;
+}
+
+int mlx5_ib_dereg_mr(struct ib_mr *ibmr)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibmr->device);
+ struct mlx5_ib_mr *mr = to_mmr(ibmr);
+ struct ib_umem *umem = mr->umem;
+ int npages = mr->npages;
+ int umred = mr->umred;
+ int err;
+
+ if (!umred) {
+ err = mlx5_core_destroy_mkey(&dev->mdev, &mr->mmr);
+ if (err) {
+ mlx5_ib_warn(dev, "failed to destroy mkey 0x%x (%d)\n",
+ mr->mmr.key, err);
+ return err;
+ }
+ } else {
+ err = unreg_umr(dev, mr);
+ if (err) {
+ mlx5_ib_warn(dev, "failed unregister\n");
+ return err;
+ }
+ free_cached_mr(dev, mr);
+ }
+
+ if (umem) {
+ ib_umem_release(umem);
+ spin_lock(&dev->mr_lock);
+ dev->mdev.priv.reg_pages -= npages;
+ spin_unlock(&dev->mr_lock);
+ }
+
+ if (!umred)
+ kfree(mr);
+
+ return 0;
+}
+
+struct ib_mr *mlx5_ib_alloc_fast_reg_mr(struct ib_pd *pd,
+ int max_page_list_len)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ struct mlx5_create_mkey_mbox_in *in;
+ struct mlx5_ib_mr *mr;
+ int err;
+
+ mr = kzalloc(sizeof(*mr), GFP_KERNEL);
+ if (!mr)
+ return ERR_PTR(-ENOMEM);
+
+ in = kzalloc(sizeof(*in), GFP_KERNEL);
+ if (!in) {
+ err = -ENOMEM;
+ goto err_free;
+ }
+
+ in->seg.status = 1 << 6; /* free */
+ in->seg.xlt_oct_size = cpu_to_be32((max_page_list_len + 1) / 2);
+ in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
+ in->seg.flags = MLX5_PERM_UMR_EN | MLX5_ACCESS_MODE_MTT;
+ in->seg.flags_pd = cpu_to_be32(to_mpd(pd)->pdn);
+ /*
+ * TBD not needed - issue 197292 */
+ in->seg.log2_page_size = PAGE_SHIFT;
+
+ err = mlx5_core_create_mkey(&dev->mdev, &mr->mmr, in, sizeof(*in));
+ kfree(in);
+ if (err)
+ goto err_free;
+
+ mr->ibmr.lkey = mr->mmr.key;
+ mr->ibmr.rkey = mr->mmr.key;
+ mr->umem = NULL;
+
+ return &mr->ibmr;
+
+err_free:
+ kfree(mr);
+ return ERR_PTR(err);
+}
+
+struct ib_fast_reg_page_list *mlx5_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
+ int page_list_len)
+{
+ struct mlx5_ib_fast_reg_page_list *mfrpl;
+ int size = page_list_len * sizeof(u64);
+
+ mfrpl = kmalloc(sizeof(*mfrpl), GFP_KERNEL);
+ if (!mfrpl)
+ return ERR_PTR(-ENOMEM);
+
+ mfrpl->ibfrpl.page_list = kmalloc(size, GFP_KERNEL);
+ if (!mfrpl->ibfrpl.page_list)
+ goto err_free;
+
+ mfrpl->mapped_page_list = dma_alloc_coherent(ibdev->dma_device,
+ size, &mfrpl->map,
+ GFP_KERNEL);
+ if (!mfrpl->mapped_page_list)
+ goto err_free;
+
+ WARN_ON(mfrpl->map & 0x3f);
+
+ return &mfrpl->ibfrpl;
+
+err_free:
+ kfree(mfrpl->ibfrpl.page_list);
+ kfree(mfrpl);
+ return ERR_PTR(-ENOMEM);
+}
+
+void mlx5_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list)
+{
+ struct mlx5_ib_fast_reg_page_list *mfrpl = to_mfrpl(page_list);
+ struct mlx5_ib_dev *dev = to_mdev(page_list->device);
+ int size = page_list->max_page_list_len * sizeof(u64);
+
+ dma_free_coherent(&dev->mdev.pdev->dev, size, mfrpl->mapped_page_list,
+ mfrpl->map);
+ kfree(mfrpl->ibfrpl.page_list);
+ kfree(mfrpl);
+}
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/module.h>
+#include <rdma/ib_umem.h>
+#include "mlx5_ib.h"
+#include "user.h"
+
+/* not supported currently */
+static int wq_signature;
+
+enum {
+ MLX5_IB_ACK_REQ_FREQ = 8,
+};
+
+enum {
+ MLX5_IB_DEFAULT_SCHED_QUEUE = 0x83,
+ MLX5_IB_DEFAULT_QP0_SCHED_QUEUE = 0x3f,
+ MLX5_IB_LINK_TYPE_IB = 0,
+ MLX5_IB_LINK_TYPE_ETH = 1
+};
+
+enum {
+ MLX5_IB_SQ_STRIDE = 6,
+ MLX5_IB_CACHE_LINE_SIZE = 64,
+};
+
+static const u32 mlx5_ib_opcode[] = {
+ [IB_WR_SEND] = MLX5_OPCODE_SEND,
+ [IB_WR_SEND_WITH_IMM] = MLX5_OPCODE_SEND_IMM,
+ [IB_WR_RDMA_WRITE] = MLX5_OPCODE_RDMA_WRITE,
+ [IB_WR_RDMA_WRITE_WITH_IMM] = MLX5_OPCODE_RDMA_WRITE_IMM,
+ [IB_WR_RDMA_READ] = MLX5_OPCODE_RDMA_READ,
+ [IB_WR_ATOMIC_CMP_AND_SWP] = MLX5_OPCODE_ATOMIC_CS,
+ [IB_WR_ATOMIC_FETCH_AND_ADD] = MLX5_OPCODE_ATOMIC_FA,
+ [IB_WR_SEND_WITH_INV] = MLX5_OPCODE_SEND_INVAL,
+ [IB_WR_LOCAL_INV] = MLX5_OPCODE_UMR,
+ [IB_WR_FAST_REG_MR] = MLX5_OPCODE_UMR,
+ [IB_WR_MASKED_ATOMIC_CMP_AND_SWP] = MLX5_OPCODE_ATOMIC_MASKED_CS,
+ [IB_WR_MASKED_ATOMIC_FETCH_AND_ADD] = MLX5_OPCODE_ATOMIC_MASKED_FA,
+ [MLX5_IB_WR_UMR] = MLX5_OPCODE_UMR,
+};
+
+struct umr_wr {
+ u64 virt_addr;
+ struct ib_pd *pd;
+ unsigned int page_shift;
+ unsigned int npages;
+ u32 length;
+ int access_flags;
+ u32 mkey;
+};
+
+static int is_qp0(enum ib_qp_type qp_type)
+{
+ return qp_type == IB_QPT_SMI;
+}
+
+static int is_qp1(enum ib_qp_type qp_type)
+{
+ return qp_type == IB_QPT_GSI;
+}
+
+static int is_sqp(enum ib_qp_type qp_type)
+{
+ return is_qp0(qp_type) || is_qp1(qp_type);
+}
+
+static void *get_wqe(struct mlx5_ib_qp *qp, int offset)
+{
+ return mlx5_buf_offset(&qp->buf, offset);
+}
+
+static void *get_recv_wqe(struct mlx5_ib_qp *qp, int n)
+{
+ return get_wqe(qp, qp->rq.offset + (n << qp->rq.wqe_shift));
+}
+
+void *mlx5_get_send_wqe(struct mlx5_ib_qp *qp, int n)
+{
+ return get_wqe(qp, qp->sq.offset + (n << MLX5_IB_SQ_STRIDE));
+}
+
+static void mlx5_ib_qp_event(struct mlx5_core_qp *qp, int type)
+{
+ struct ib_qp *ibqp = &to_mibqp(qp)->ibqp;
+ struct ib_event event;
+
+ if (type == MLX5_EVENT_TYPE_PATH_MIG)
+ to_mibqp(qp)->port = to_mibqp(qp)->alt_port;
+
+ if (ibqp->event_handler) {
+ event.device = ibqp->device;
+ event.element.qp = ibqp;
+ switch (type) {
+ case MLX5_EVENT_TYPE_PATH_MIG:
+ event.event = IB_EVENT_PATH_MIG;
+ break;
+ case MLX5_EVENT_TYPE_COMM_EST:
+ event.event = IB_EVENT_COMM_EST;
+ break;
+ case MLX5_EVENT_TYPE_SQ_DRAINED:
+ event.event = IB_EVENT_SQ_DRAINED;
+ break;
+ case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
+ event.event = IB_EVENT_QP_LAST_WQE_REACHED;
+ break;
+ case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
+ event.event = IB_EVENT_QP_FATAL;
+ break;
+ case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
+ event.event = IB_EVENT_PATH_MIG_ERR;
+ break;
+ case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
+ event.event = IB_EVENT_QP_REQ_ERR;
+ break;
+ case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
+ event.event = IB_EVENT_QP_ACCESS_ERR;
+ break;
+ default:
+ pr_warn("mlx5_ib: Unexpected event type %d on QP %06x\n", type, qp->qpn);
+ return;
+ }
+
+ ibqp->event_handler(&event, ibqp->qp_context);
+ }
+}
+
+static int set_rq_size(struct mlx5_ib_dev *dev, struct ib_qp_cap *cap,
+ int has_rq, struct mlx5_ib_qp *qp, struct mlx5_ib_create_qp *ucmd)
+{
+ int wqe_size;
+ int wq_size;
+
+ /* Sanity check RQ size before proceeding */
+ if (cap->max_recv_wr > dev->mdev.caps.max_wqes)
+ return -EINVAL;
+
+ if (!has_rq) {
+ qp->rq.max_gs = 0;
+ qp->rq.wqe_cnt = 0;
+ qp->rq.wqe_shift = 0;
+ } else {
+ if (ucmd) {
+ qp->rq.wqe_cnt = ucmd->rq_wqe_count;
+ qp->rq.wqe_shift = ucmd->rq_wqe_shift;
+ qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) - qp->wq_sig;
+ qp->rq.max_post = qp->rq.wqe_cnt;
+ } else {
+ wqe_size = qp->wq_sig ? sizeof(struct mlx5_wqe_signature_seg) : 0;
+ wqe_size += cap->max_recv_sge * sizeof(struct mlx5_wqe_data_seg);
+ wqe_size = roundup_pow_of_two(wqe_size);
+ wq_size = roundup_pow_of_two(cap->max_recv_wr) * wqe_size;
+ wq_size = max_t(int, wq_size, MLX5_SEND_WQE_BB);
+ qp->rq.wqe_cnt = wq_size / wqe_size;
+ if (wqe_size > dev->mdev.caps.max_rq_desc_sz) {
+ mlx5_ib_dbg(dev, "wqe_size %d, max %d\n",
+ wqe_size,
+ dev->mdev.caps.max_rq_desc_sz);
+ return -EINVAL;
+ }
+ qp->rq.wqe_shift = ilog2(wqe_size);
+ qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) - qp->wq_sig;
+ qp->rq.max_post = qp->rq.wqe_cnt;
+ }
+ }
+
+ return 0;
+}
+
+static int sq_overhead(enum ib_qp_type qp_type)
+{
+ int size;
+
+ switch (qp_type) {
+ case IB_QPT_XRC_INI:
+ size = sizeof(struct mlx5_wqe_xrc_seg);
+ /* fall through */
+ case IB_QPT_RC:
+ size += sizeof(struct mlx5_wqe_ctrl_seg) +
+ sizeof(struct mlx5_wqe_atomic_seg) +
+ sizeof(struct mlx5_wqe_raddr_seg);
+ break;
+
+ case IB_QPT_UC:
+ size = sizeof(struct mlx5_wqe_ctrl_seg) +
+ sizeof(struct mlx5_wqe_raddr_seg);
+ break;
+
+ case IB_QPT_UD:
+ case IB_QPT_SMI:
+ case IB_QPT_GSI:
+ size = sizeof(struct mlx5_wqe_ctrl_seg) +
+ sizeof(struct mlx5_wqe_datagram_seg);
+ break;
+
+ case MLX5_IB_QPT_REG_UMR:
+ size = sizeof(struct mlx5_wqe_ctrl_seg) +
+ sizeof(struct mlx5_wqe_umr_ctrl_seg) +
+ sizeof(struct mlx5_mkey_seg);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return size;
+}
+
+static int calc_send_wqe(struct ib_qp_init_attr *attr)
+{
+ int inl_size = 0;
+ int size;
+
+ size = sq_overhead(attr->qp_type);
+ if (size < 0)
+ return size;
+
+ if (attr->cap.max_inline_data) {
+ inl_size = size + sizeof(struct mlx5_wqe_inline_seg) +
+ attr->cap.max_inline_data;
+ }
+
+ size += attr->cap.max_send_sge * sizeof(struct mlx5_wqe_data_seg);
+
+ return ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB);
+}
+
+static int calc_sq_size(struct mlx5_ib_dev *dev, struct ib_qp_init_attr *attr,
+ struct mlx5_ib_qp *qp)
+{
+ int wqe_size;
+ int wq_size;
+
+ if (!attr->cap.max_send_wr)
+ return 0;
+
+ wqe_size = calc_send_wqe(attr);
+ mlx5_ib_dbg(dev, "wqe_size %d\n", wqe_size);
+ if (wqe_size < 0)
+ return wqe_size;
+
+ if (wqe_size > dev->mdev.caps.max_sq_desc_sz) {
+ mlx5_ib_dbg(dev, "\n");
+ return -EINVAL;
+ }
+
+ qp->max_inline_data = wqe_size - sq_overhead(attr->qp_type) -
+ sizeof(struct mlx5_wqe_inline_seg);
+ attr->cap.max_inline_data = qp->max_inline_data;
+
+ wq_size = roundup_pow_of_two(attr->cap.max_send_wr * wqe_size);
+ qp->sq.wqe_cnt = wq_size / MLX5_SEND_WQE_BB;
+ qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB);
+ qp->sq.max_gs = attr->cap.max_send_sge;
+ qp->sq.max_post = 1 << ilog2(wq_size / wqe_size);
+
+ return wq_size;
+}
+
+static int set_user_buf_size(struct mlx5_ib_dev *dev,
+ struct mlx5_ib_qp *qp,
+ struct mlx5_ib_create_qp *ucmd)
+{
+ int desc_sz = 1 << qp->sq.wqe_shift;
+
+ if (desc_sz > dev->mdev.caps.max_sq_desc_sz) {
+ mlx5_ib_warn(dev, "desc_sz %d, max_sq_desc_sz %d\n",
+ desc_sz, dev->mdev.caps.max_sq_desc_sz);
+ return -EINVAL;
+ }
+
+ if (ucmd->sq_wqe_count && ((1 << ilog2(ucmd->sq_wqe_count)) != ucmd->sq_wqe_count)) {
+ mlx5_ib_warn(dev, "sq_wqe_count %d, sq_wqe_count %d\n",
+ ucmd->sq_wqe_count, ucmd->sq_wqe_count);
+ return -EINVAL;
+ }
+
+ qp->sq.wqe_cnt = ucmd->sq_wqe_count;
+
+ if (qp->sq.wqe_cnt > dev->mdev.caps.max_wqes) {
+ mlx5_ib_warn(dev, "wqe_cnt %d, max_wqes %d\n",
+ qp->sq.wqe_cnt, dev->mdev.caps.max_wqes);
+ return -EINVAL;
+ }
+
+ qp->buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) +
+ (qp->sq.wqe_cnt << 6);
+
+ return 0;
+}
+
+static int qp_has_rq(struct ib_qp_init_attr *attr)
+{
+ if (attr->qp_type == IB_QPT_XRC_INI ||
+ attr->qp_type == IB_QPT_XRC_TGT || attr->srq ||
+ attr->qp_type == MLX5_IB_QPT_REG_UMR ||
+ !attr->cap.max_recv_wr)
+ return 0;
+
+ return 1;
+}
+
+static int alloc_high_class_uuar(struct mlx5_uuar_info *uuari)
+{
+ int nuuars = uuari->num_uars * MLX5_BF_REGS_PER_PAGE;
+ int start_uuar;
+ int i;
+
+ start_uuar = nuuars - uuari->num_low_latency_uuars;
+ for (i = start_uuar; i < nuuars; i++) {
+ if (!test_bit(i, uuari->bitmap)) {
+ set_bit(i, uuari->bitmap);
+ uuari->count[i]++;
+ return i;
+ }
+ }
+
+ return -ENOMEM;
+}
+
+static int alloc_med_class_uuar(struct mlx5_uuar_info *uuari)
+{
+ int nuuars = uuari->num_uars * MLX5_BF_REGS_PER_PAGE;
+ int minidx = 1;
+ int uuarn;
+ int end;
+ int i;
+
+ end = nuuars - uuari->num_low_latency_uuars;
+
+ for (i = 1; i < end; i++) {
+ uuarn = i & 3;
+ if (uuarn == 2 || uuarn == 3)
+ continue;
+
+ if (uuari->count[i] < uuari->count[minidx])
+ minidx = i;
+ }
+
+ uuari->count[minidx]++;
+ return minidx;
+}
+
+static int alloc_uuar(struct mlx5_uuar_info *uuari,
+ enum mlx5_ib_latency_class lat)
+{
+ int uuarn = -EINVAL;
+
+ mutex_lock(&uuari->lock);
+ switch (lat) {
+ case MLX5_IB_LATENCY_CLASS_LOW:
+ uuarn = 0;
+ uuari->count[uuarn]++;
+ break;
+
+ case MLX5_IB_LATENCY_CLASS_MEDIUM:
+ uuarn = alloc_med_class_uuar(uuari);
+ break;
+
+ case MLX5_IB_LATENCY_CLASS_HIGH:
+ uuarn = alloc_high_class_uuar(uuari);
+ break;
+
+ case MLX5_IB_LATENCY_CLASS_FAST_PATH:
+ uuarn = 2;
+ break;
+ }
+ mutex_unlock(&uuari->lock);
+
+ return uuarn;
+}
+
+static void free_med_class_uuar(struct mlx5_uuar_info *uuari, int uuarn)
+{
+ clear_bit(uuarn, uuari->bitmap);
+ --uuari->count[uuarn];
+}
+
+static void free_high_class_uuar(struct mlx5_uuar_info *uuari, int uuarn)
+{
+ clear_bit(uuarn, uuari->bitmap);
+ --uuari->count[uuarn];
+}
+
+static void free_uuar(struct mlx5_uuar_info *uuari, int uuarn)
+{
+ int nuuars = uuari->num_uars * MLX5_BF_REGS_PER_PAGE;
+ int high_uuar = nuuars - uuari->num_low_latency_uuars;
+
+ mutex_lock(&uuari->lock);
+ if (uuarn == 0) {
+ --uuari->count[uuarn];
+ goto out;
+ }
+
+ if (uuarn < high_uuar) {
+ free_med_class_uuar(uuari, uuarn);
+ goto out;
+ }
+
+ free_high_class_uuar(uuari, uuarn);
+
+out:
+ mutex_unlock(&uuari->lock);
+}
+
+static enum mlx5_qp_state to_mlx5_state(enum ib_qp_state state)
+{
+ switch (state) {
+ case IB_QPS_RESET: return MLX5_QP_STATE_RST;
+ case IB_QPS_INIT: return MLX5_QP_STATE_INIT;
+ case IB_QPS_RTR: return MLX5_QP_STATE_RTR;
+ case IB_QPS_RTS: return MLX5_QP_STATE_RTS;
+ case IB_QPS_SQD: return MLX5_QP_STATE_SQD;
+ case IB_QPS_SQE: return MLX5_QP_STATE_SQER;
+ case IB_QPS_ERR: return MLX5_QP_STATE_ERR;
+ default: return -1;
+ }
+}
+
+static int to_mlx5_st(enum ib_qp_type type)
+{
+ switch (type) {
+ case IB_QPT_RC: return MLX5_QP_ST_RC;
+ case IB_QPT_UC: return MLX5_QP_ST_UC;
+ case IB_QPT_UD: return MLX5_QP_ST_UD;
+ case MLX5_IB_QPT_REG_UMR: return MLX5_QP_ST_REG_UMR;
+ case IB_QPT_XRC_INI:
+ case IB_QPT_XRC_TGT: return MLX5_QP_ST_XRC;
+ case IB_QPT_SMI: return MLX5_QP_ST_QP0;
+ case IB_QPT_GSI: return MLX5_QP_ST_QP1;
+ case IB_QPT_RAW_IPV6: return MLX5_QP_ST_RAW_IPV6;
+ case IB_QPT_RAW_ETHERTYPE: return MLX5_QP_ST_RAW_ETHERTYPE;
+ case IB_QPT_RAW_PACKET:
+ case IB_QPT_MAX:
+ default: return -EINVAL;
+ }
+}
+
+static int uuarn_to_uar_index(struct mlx5_uuar_info *uuari, int uuarn)
+{
+ return uuari->uars[uuarn / MLX5_BF_REGS_PER_PAGE].index;
+}
+
+static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
+ struct mlx5_ib_qp *qp, struct ib_udata *udata,
+ struct mlx5_create_qp_mbox_in **in,
+ struct mlx5_ib_create_qp_resp *resp, int *inlen)
+{
+ struct mlx5_ib_ucontext *context;
+ struct mlx5_ib_create_qp ucmd;
+ int page_shift;
+ int uar_index;
+ int npages;
+ u32 offset;
+ int uuarn;
+ int ncont;
+ int err;
+
+ err = ib_copy_from_udata(&ucmd, udata, sizeof(ucmd));
+ if (err) {
+ mlx5_ib_dbg(dev, "copy failed\n");
+ return err;
+ }
+
+ context = to_mucontext(pd->uobject->context);
+ /*
+ * TBD: should come from the verbs when we have the API
+ */
+ uuarn = alloc_uuar(&context->uuari, MLX5_IB_LATENCY_CLASS_HIGH);
+ if (uuarn < 0) {
+ mlx5_ib_dbg(dev, "failed to allocate low latency UUAR\n");
+ mlx5_ib_dbg(dev, "reverting to high latency\n");
+ uuarn = alloc_uuar(&context->uuari, MLX5_IB_LATENCY_CLASS_LOW);
+ if (uuarn < 0) {
+ mlx5_ib_dbg(dev, "uuar allocation failed\n");
+ return uuarn;
+ }
+ }
+
+ uar_index = uuarn_to_uar_index(&context->uuari, uuarn);
+ mlx5_ib_dbg(dev, "uuarn 0x%x, uar_index 0x%x\n", uuarn, uar_index);
+
+ err = set_user_buf_size(dev, qp, &ucmd);
+ if (err)
+ goto err_uuar;
+
+ qp->umem = ib_umem_get(pd->uobject->context, ucmd.buf_addr,
+ qp->buf_size, 0, 0);
+ if (IS_ERR(qp->umem)) {
+ mlx5_ib_dbg(dev, "umem_get failed\n");
+ err = PTR_ERR(qp->umem);
+ goto err_uuar;
+ }
+
+ mlx5_ib_cont_pages(qp->umem, ucmd.buf_addr, &npages, &page_shift,
+ &ncont, NULL);
+ err = mlx5_ib_get_buf_offset(ucmd.buf_addr, page_shift, &offset);
+ if (err) {
+ mlx5_ib_warn(dev, "bad offset\n");
+ goto err_umem;
+ }
+ mlx5_ib_dbg(dev, "addr 0x%llx, size %d, npages %d, page_shift %d, ncont %d, offset %d\n",
+ ucmd.buf_addr, qp->buf_size, npages, page_shift, ncont, offset);
+
+ *inlen = sizeof(**in) + sizeof(*(*in)->pas) * ncont;
+ *in = mlx5_vzalloc(*inlen);
+ if (!*in) {
+ err = -ENOMEM;
+ goto err_umem;
+ }
+ mlx5_ib_populate_pas(dev, qp->umem, page_shift, (*in)->pas, 0);
+ (*in)->ctx.log_pg_sz_remote_qpn =
+ cpu_to_be32((page_shift - PAGE_SHIFT) << 24);
+ (*in)->ctx.params2 = cpu_to_be32(offset << 6);
+
+ (*in)->ctx.qp_counter_set_usr_page = cpu_to_be32(uar_index);
+ resp->uuar_index = uuarn;
+ qp->uuarn = uuarn;
+
+ err = mlx5_ib_db_map_user(context, ucmd.db_addr, &qp->db);
+ if (err) {
+ mlx5_ib_dbg(dev, "map failed\n");
+ goto err_free;
+ }
+
+ err = ib_copy_to_udata(udata, resp, sizeof(*resp));
+ if (err) {
+ mlx5_ib_dbg(dev, "copy failed\n");
+ goto err_unmap;
+ }
+ qp->create_type = MLX5_QP_USER;
+
+ return 0;
+
+err_unmap:
+ mlx5_ib_db_unmap_user(context, &qp->db);
+
+err_free:
+ mlx5_vfree(*in);
+
+err_umem:
+ ib_umem_release(qp->umem);
+
+err_uuar:
+ free_uuar(&context->uuari, uuarn);
+ return err;
+}
+
+static void destroy_qp_user(struct ib_pd *pd, struct mlx5_ib_qp *qp)
+{
+ struct mlx5_ib_ucontext *context;
+
+ context = to_mucontext(pd->uobject->context);
+ mlx5_ib_db_unmap_user(context, &qp->db);
+ ib_umem_release(qp->umem);
+ free_uuar(&context->uuari, qp->uuarn);
+}
+
+static int create_kernel_qp(struct mlx5_ib_dev *dev,
+ struct ib_qp_init_attr *init_attr,
+ struct mlx5_ib_qp *qp,
+ struct mlx5_create_qp_mbox_in **in, int *inlen)
+{
+ enum mlx5_ib_latency_class lc = MLX5_IB_LATENCY_CLASS_LOW;
+ struct mlx5_uuar_info *uuari;
+ int uar_index;
+ int uuarn;
+ int err;
+
+ uuari = &dev->mdev.priv.uuari;
+ if (init_attr->create_flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK)
+ qp->flags |= MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK;
+
+ if (init_attr->qp_type == MLX5_IB_QPT_REG_UMR)
+ lc = MLX5_IB_LATENCY_CLASS_FAST_PATH;
+
+ uuarn = alloc_uuar(uuari, lc);
+ if (uuarn < 0) {
+ mlx5_ib_dbg(dev, "\n");
+ return -ENOMEM;
+ }
+
+ qp->bf = &uuari->bfs[uuarn];
+ uar_index = qp->bf->uar->index;
+
+ err = calc_sq_size(dev, init_attr, qp);
+ if (err < 0) {
+ mlx5_ib_dbg(dev, "err %d\n", err);
+ goto err_uuar;
+ }
+
+ qp->rq.offset = 0;
+ qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift;
+ qp->buf_size = err + (qp->rq.wqe_cnt << qp->rq.wqe_shift);
+
+ err = mlx5_buf_alloc(&dev->mdev, qp->buf_size, PAGE_SIZE * 2, &qp->buf);
+ if (err) {
+ mlx5_ib_dbg(dev, "err %d\n", err);
+ goto err_uuar;
+ }
+
+ qp->sq.qend = mlx5_get_send_wqe(qp, qp->sq.wqe_cnt);
+ *inlen = sizeof(**in) + sizeof(*(*in)->pas) * qp->buf.npages;
+ *in = mlx5_vzalloc(*inlen);
+ if (!*in) {
+ err = -ENOMEM;
+ goto err_buf;
+ }
+ (*in)->ctx.qp_counter_set_usr_page = cpu_to_be32(uar_index);
+ (*in)->ctx.log_pg_sz_remote_qpn = cpu_to_be32((qp->buf.page_shift - PAGE_SHIFT) << 24);
+ /* Set "fast registration enabled" for all kernel QPs */
+ (*in)->ctx.params1 |= cpu_to_be32(1 << 11);
+ (*in)->ctx.sq_crq_size |= cpu_to_be16(1 << 4);
+
+ mlx5_fill_page_array(&qp->buf, (*in)->pas);
+
+ err = mlx5_db_alloc(&dev->mdev, &qp->db);
+ if (err) {
+ mlx5_ib_dbg(dev, "err %d\n", err);
+ goto err_free;
+ }
+
+ qp->db.db[0] = 0;
+ qp->db.db[1] = 0;
+
+ qp->sq.wrid = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wrid), GFP_KERNEL);
+ qp->sq.wr_data = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wr_data), GFP_KERNEL);
+ qp->rq.wrid = kmalloc(qp->rq.wqe_cnt * sizeof(*qp->rq.wrid), GFP_KERNEL);
+ qp->sq.w_list = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.w_list), GFP_KERNEL);
+ qp->sq.wqe_head = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wqe_head), GFP_KERNEL);
+
+ if (!qp->sq.wrid || !qp->sq.wr_data || !qp->rq.wrid ||
+ !qp->sq.w_list || !qp->sq.wqe_head) {
+ err = -ENOMEM;
+ goto err_wrid;
+ }
+ qp->create_type = MLX5_QP_KERNEL;
+
+ return 0;
+
+err_wrid:
+ mlx5_db_free(&dev->mdev, &qp->db);
+ kfree(qp->sq.wqe_head);
+ kfree(qp->sq.w_list);
+ kfree(qp->sq.wrid);
+ kfree(qp->sq.wr_data);
+ kfree(qp->rq.wrid);
+
+err_free:
+ mlx5_vfree(*in);
+
+err_buf:
+ mlx5_buf_free(&dev->mdev, &qp->buf);
+
+err_uuar:
+ free_uuar(&dev->mdev.priv.uuari, uuarn);
+ return err;
+}
+
+static void destroy_qp_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
+{
+ mlx5_db_free(&dev->mdev, &qp->db);
+ kfree(qp->sq.wqe_head);
+ kfree(qp->sq.w_list);
+ kfree(qp->sq.wrid);
+ kfree(qp->sq.wr_data);
+ kfree(qp->rq.wrid);
+ mlx5_buf_free(&dev->mdev, &qp->buf);
+ free_uuar(&dev->mdev.priv.uuari, qp->bf->uuarn);
+}
+
+static __be32 get_rx_type(struct mlx5_ib_qp *qp, struct ib_qp_init_attr *attr)
+{
+ if (attr->srq || (attr->qp_type == IB_QPT_XRC_TGT) ||
+ (attr->qp_type == IB_QPT_XRC_INI))
+ return cpu_to_be32(MLX5_SRQ_RQ);
+ else if (!qp->has_rq)
+ return cpu_to_be32(MLX5_ZERO_LEN_RQ);
+ else
+ return cpu_to_be32(MLX5_NON_ZERO_RQ);
+}
+
+static int is_connected(enum ib_qp_type qp_type)
+{
+ if (qp_type == IB_QPT_RC || qp_type == IB_QPT_UC)
+ return 1;
+
+ return 0;
+}
+
+static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
+ struct ib_qp_init_attr *init_attr,
+ struct ib_udata *udata, struct mlx5_ib_qp *qp)
+{
+ struct mlx5_ib_resources *devr = &dev->devr;
+ struct mlx5_ib_create_qp_resp resp;
+ struct mlx5_create_qp_mbox_in *in;
+ struct mlx5_ib_create_qp ucmd;
+ int inlen = sizeof(*in);
+ int err;
+
+ mutex_init(&qp->mutex);
+ spin_lock_init(&qp->sq.lock);
+ spin_lock_init(&qp->rq.lock);
+
+ if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)
+ qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE;
+
+ if (pd && pd->uobject) {
+ if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
+ mlx5_ib_dbg(dev, "copy failed\n");
+ return -EFAULT;
+ }
+
+ qp->wq_sig = !!(ucmd.flags & MLX5_QP_FLAG_SIGNATURE);
+ qp->scat_cqe = !!(ucmd.flags & MLX5_QP_FLAG_SCATTER_CQE);
+ } else {
+ qp->wq_sig = !!wq_signature;
+ }
+
+ qp->has_rq = qp_has_rq(init_attr);
+ err = set_rq_size(dev, &init_attr->cap, qp->has_rq,
+ qp, (pd && pd->uobject) ? &ucmd : NULL);
+ if (err) {
+ mlx5_ib_dbg(dev, "err %d\n", err);
+ return err;
+ }
+
+ if (pd) {
+ if (pd->uobject) {
+ mlx5_ib_dbg(dev, "requested sq_wqe_count (%d)\n", ucmd.sq_wqe_count);
+ if (ucmd.rq_wqe_shift != qp->rq.wqe_shift ||
+ ucmd.rq_wqe_count != qp->rq.wqe_cnt) {
+ mlx5_ib_dbg(dev, "invalid rq params\n");
+ return -EINVAL;
+ }
+ if (ucmd.sq_wqe_count > dev->mdev.caps.max_wqes) {
+ mlx5_ib_dbg(dev, "requested sq_wqe_count (%d) > max allowed (%d)\n",
+ ucmd.sq_wqe_count, dev->mdev.caps.max_wqes);
+ return -EINVAL;
+ }
+ err = create_user_qp(dev, pd, qp, udata, &in, &resp, &inlen);
+ if (err)
+ mlx5_ib_dbg(dev, "err %d\n", err);
+ } else {
+ err = create_kernel_qp(dev, init_attr, qp, &in, &inlen);
+ if (err)
+ mlx5_ib_dbg(dev, "err %d\n", err);
+ else
+ qp->pa_lkey = to_mpd(pd)->pa_lkey;
+ }
+
+ if (err)
+ return err;
+ } else {
+ in = mlx5_vzalloc(sizeof(*in));
+ if (!in)
+ return -ENOMEM;
+
+ qp->create_type = MLX5_QP_EMPTY;
+ }
+
+ if (is_sqp(init_attr->qp_type))
+ qp->port = init_attr->port_num;
+
+ in->ctx.flags = cpu_to_be32(to_mlx5_st(init_attr->qp_type) << 16 |
+ MLX5_QP_PM_MIGRATED << 11);
+
+ if (init_attr->qp_type != MLX5_IB_QPT_REG_UMR)
+ in->ctx.flags_pd = cpu_to_be32(to_mpd(pd ? pd : devr->p0)->pdn);
+ else
+ in->ctx.flags_pd = cpu_to_be32(MLX5_QP_LAT_SENSITIVE);
+
+ if (qp->wq_sig)
+ in->ctx.flags_pd |= cpu_to_be32(MLX5_QP_ENABLE_SIG);
+
+ if (qp->scat_cqe && is_connected(init_attr->qp_type)) {
+ int rcqe_sz;
+ int scqe_sz;
+
+ rcqe_sz = mlx5_ib_get_cqe_size(dev, init_attr->recv_cq);
+ scqe_sz = mlx5_ib_get_cqe_size(dev, init_attr->send_cq);
+
+ if (rcqe_sz == 128)
+ in->ctx.cs_res = MLX5_RES_SCAT_DATA64_CQE;
+ else
+ in->ctx.cs_res = MLX5_RES_SCAT_DATA32_CQE;
+
+ if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) {
+ if (scqe_sz == 128)
+ in->ctx.cs_req = MLX5_REQ_SCAT_DATA64_CQE;
+ else
+ in->ctx.cs_req = MLX5_REQ_SCAT_DATA32_CQE;
+ }
+ }
+
+ if (qp->rq.wqe_cnt) {
+ in->ctx.rq_size_stride = (qp->rq.wqe_shift - 4);
+ in->ctx.rq_size_stride |= ilog2(qp->rq.wqe_cnt) << 3;
+ }
+
+ in->ctx.rq_type_srqn = get_rx_type(qp, init_attr);
+
+ if (qp->sq.wqe_cnt)
+ in->ctx.sq_crq_size |= cpu_to_be16(ilog2(qp->sq.wqe_cnt) << 11);
+ else
+ in->ctx.sq_crq_size |= cpu_to_be16(0x8000);
+
+ /* Set default resources */
+ switch (init_attr->qp_type) {
+ case IB_QPT_XRC_TGT:
+ in->ctx.cqn_recv = cpu_to_be32(to_mcq(devr->c0)->mcq.cqn);
+ in->ctx.cqn_send = cpu_to_be32(to_mcq(devr->c0)->mcq.cqn);
+ in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(devr->s0)->msrq.srqn);
+ in->ctx.xrcd = cpu_to_be32(to_mxrcd(init_attr->xrcd)->xrcdn);
+ break;
+ case IB_QPT_XRC_INI:
+ in->ctx.cqn_recv = cpu_to_be32(to_mcq(devr->c0)->mcq.cqn);
+ in->ctx.xrcd = cpu_to_be32(to_mxrcd(devr->x1)->xrcdn);
+ in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(devr->s0)->msrq.srqn);
+ break;
+ default:
+ if (init_attr->srq) {
+ in->ctx.xrcd = cpu_to_be32(to_mxrcd(devr->x0)->xrcdn);
+ in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(init_attr->srq)->msrq.srqn);
+ } else {
+ in->ctx.xrcd = cpu_to_be32(to_mxrcd(devr->x1)->xrcdn);
+ in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(devr->s0)->msrq.srqn);
+ }
+ }
+
+ if (init_attr->send_cq)
+ in->ctx.cqn_send = cpu_to_be32(to_mcq(init_attr->send_cq)->mcq.cqn);
+
+ if (init_attr->recv_cq)
+ in->ctx.cqn_recv = cpu_to_be32(to_mcq(init_attr->recv_cq)->mcq.cqn);
+
+ in->ctx.db_rec_addr = cpu_to_be64(qp->db.dma);
+
+ err = mlx5_core_create_qp(&dev->mdev, &qp->mqp, in, inlen);
+ if (err) {
+ mlx5_ib_dbg(dev, "create qp failed\n");
+ goto err_create;
+ }
+
+ mlx5_vfree(in);
+ /* Hardware wants QPN written in big-endian order (after
+ * shifting) for send doorbell. Precompute this value to save
+ * a little bit when posting sends.
+ */
+ qp->doorbell_qpn = swab32(qp->mqp.qpn << 8);
+
+ qp->mqp.event = mlx5_ib_qp_event;
+
+ return 0;
+
+err_create:
+ if (qp->create_type == MLX5_QP_USER)
+ destroy_qp_user(pd, qp);
+ else if (qp->create_type == MLX5_QP_KERNEL)
+ destroy_qp_kernel(dev, qp);
+
+ mlx5_vfree(in);
+ return err;
+}
+
+static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
+ __acquires(&send_cq->lock) __acquires(&recv_cq->lock)
+{
+ if (send_cq) {
+ if (recv_cq) {
+ if (send_cq->mcq.cqn < recv_cq->mcq.cqn) {
+ spin_lock_irq(&send_cq->lock);
+ spin_lock_nested(&recv_cq->lock,
+ SINGLE_DEPTH_NESTING);
+ } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
+ spin_lock_irq(&send_cq->lock);
+ __acquire(&recv_cq->lock);
+ } else {
+ spin_lock_irq(&recv_cq->lock);
+ spin_lock_nested(&send_cq->lock,
+ SINGLE_DEPTH_NESTING);
+ }
+ } else {
+ spin_lock_irq(&send_cq->lock);
+ }
+ } else if (recv_cq) {
+ spin_lock_irq(&recv_cq->lock);
+ }
+}
+
+static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
+ __releases(&send_cq->lock) __releases(&recv_cq->lock)
+{
+ if (send_cq) {
+ if (recv_cq) {
+ if (send_cq->mcq.cqn < recv_cq->mcq.cqn) {
+ spin_unlock(&recv_cq->lock);
+ spin_unlock_irq(&send_cq->lock);
+ } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
+ __release(&recv_cq->lock);
+ spin_unlock_irq(&send_cq->lock);
+ } else {
+ spin_unlock(&send_cq->lock);
+ spin_unlock_irq(&recv_cq->lock);
+ }
+ } else {
+ spin_unlock_irq(&send_cq->lock);
+ }
+ } else if (recv_cq) {
+ spin_unlock_irq(&recv_cq->lock);
+ }
+}
+
+static struct mlx5_ib_pd *get_pd(struct mlx5_ib_qp *qp)
+{
+ return to_mpd(qp->ibqp.pd);
+}
+
+static void get_cqs(struct mlx5_ib_qp *qp,
+ struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq)
+{
+ switch (qp->ibqp.qp_type) {
+ case IB_QPT_XRC_TGT:
+ *send_cq = NULL;
+ *recv_cq = NULL;
+ break;
+ case MLX5_IB_QPT_REG_UMR:
+ case IB_QPT_XRC_INI:
+ *send_cq = to_mcq(qp->ibqp.send_cq);
+ *recv_cq = NULL;
+ break;
+
+ case IB_QPT_SMI:
+ case IB_QPT_GSI:
+ case IB_QPT_RC:
+ case IB_QPT_UC:
+ case IB_QPT_UD:
+ case IB_QPT_RAW_IPV6:
+ case IB_QPT_RAW_ETHERTYPE:
+ *send_cq = to_mcq(qp->ibqp.send_cq);
+ *recv_cq = to_mcq(qp->ibqp.recv_cq);
+ break;
+
+ case IB_QPT_RAW_PACKET:
+ case IB_QPT_MAX:
+ default:
+ *send_cq = NULL;
+ *recv_cq = NULL;
+ break;
+ }
+}
+
+static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
+{
+ struct mlx5_ib_cq *send_cq, *recv_cq;
+ struct mlx5_modify_qp_mbox_in *in;
+ int err;
+
+ in = kzalloc(sizeof(*in), GFP_KERNEL);
+ if (!in)
+ return;
+ if (qp->state != IB_QPS_RESET)
+ if (mlx5_core_qp_modify(&dev->mdev, to_mlx5_state(qp->state),
+ MLX5_QP_STATE_RST, in, sizeof(*in), &qp->mqp))
+ mlx5_ib_warn(dev, "mlx5_ib: modify QP %06x to RESET failed\n",
+ qp->mqp.qpn);
+
+ get_cqs(qp, &send_cq, &recv_cq);
+
+ if (qp->create_type == MLX5_QP_KERNEL) {
+ mlx5_ib_lock_cqs(send_cq, recv_cq);
+ __mlx5_ib_cq_clean(recv_cq, qp->mqp.qpn,
+ qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
+ if (send_cq != recv_cq)
+ __mlx5_ib_cq_clean(send_cq, qp->mqp.qpn, NULL);
+ mlx5_ib_unlock_cqs(send_cq, recv_cq);
+ }
+
+ err = mlx5_core_destroy_qp(&dev->mdev, &qp->mqp);
+ if (err)
+ mlx5_ib_warn(dev, "failed to destroy QP 0x%x\n", qp->mqp.qpn);
+ kfree(in);
+
+
+ if (qp->create_type == MLX5_QP_KERNEL)
+ destroy_qp_kernel(dev, qp);
+ else if (qp->create_type == MLX5_QP_USER)
+ destroy_qp_user(&get_pd(qp)->ibpd, qp);
+}
+
+static const char *ib_qp_type_str(enum ib_qp_type type)
+{
+ switch (type) {
+ case IB_QPT_SMI:
+ return "IB_QPT_SMI";
+ case IB_QPT_GSI:
+ return "IB_QPT_GSI";
+ case IB_QPT_RC:
+ return "IB_QPT_RC";
+ case IB_QPT_UC:
+ return "IB_QPT_UC";
+ case IB_QPT_UD:
+ return "IB_QPT_UD";
+ case IB_QPT_RAW_IPV6:
+ return "IB_QPT_RAW_IPV6";
+ case IB_QPT_RAW_ETHERTYPE:
+ return "IB_QPT_RAW_ETHERTYPE";
+ case IB_QPT_XRC_INI:
+ return "IB_QPT_XRC_INI";
+ case IB_QPT_XRC_TGT:
+ return "IB_QPT_XRC_TGT";
+ case IB_QPT_RAW_PACKET:
+ return "IB_QPT_RAW_PACKET";
+ case MLX5_IB_QPT_REG_UMR:
+ return "MLX5_IB_QPT_REG_UMR";
+ case IB_QPT_MAX:
+ default:
+ return "Invalid QP type";
+ }
+}
+
+struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd,
+ struct ib_qp_init_attr *init_attr,
+ struct ib_udata *udata)
+{
+ struct mlx5_ib_dev *dev;
+ struct mlx5_ib_qp *qp;
+ u16 xrcdn = 0;
+ int err;
+
+ if (pd) {
+ dev = to_mdev(pd->device);
+ } else {
+ /* being cautious here */
+ if (init_attr->qp_type != IB_QPT_XRC_TGT &&
+ init_attr->qp_type != MLX5_IB_QPT_REG_UMR) {
+ pr_warn("%s: no PD for transport %s\n", __func__,
+ ib_qp_type_str(init_attr->qp_type));
+ return ERR_PTR(-EINVAL);
+ }
+ dev = to_mdev(to_mxrcd(init_attr->xrcd)->ibxrcd.device);
+ }
+
+ switch (init_attr->qp_type) {
+ case IB_QPT_XRC_TGT:
+ case IB_QPT_XRC_INI:
+ if (!(dev->mdev.caps.flags & MLX5_DEV_CAP_FLAG_XRC)) {
+ mlx5_ib_dbg(dev, "XRC not supported\n");
+ return ERR_PTR(-ENOSYS);
+ }
+ init_attr->recv_cq = NULL;
+ if (init_attr->qp_type == IB_QPT_XRC_TGT) {
+ xrcdn = to_mxrcd(init_attr->xrcd)->xrcdn;
+ init_attr->send_cq = NULL;
+ }
+
+ /* fall through */
+ case IB_QPT_RC:
+ case IB_QPT_UC:
+ case IB_QPT_UD:
+ case IB_QPT_SMI:
+ case IB_QPT_GSI:
+ case MLX5_IB_QPT_REG_UMR:
+ qp = kzalloc(sizeof(*qp), GFP_KERNEL);
+ if (!qp)
+ return ERR_PTR(-ENOMEM);
+
+ err = create_qp_common(dev, pd, init_attr, udata, qp);
+ if (err) {
+ mlx5_ib_dbg(dev, "create_qp_common failed\n");
+ kfree(qp);
+ return ERR_PTR(err);
+ }
+
+ if (is_qp0(init_attr->qp_type))
+ qp->ibqp.qp_num = 0;
+ else if (is_qp1(init_attr->qp_type))
+ qp->ibqp.qp_num = 1;
+ else
+ qp->ibqp.qp_num = qp->mqp.qpn;
+
+ mlx5_ib_dbg(dev, "ib qpnum 0x%x, mlx qpn 0x%x, rcqn 0x%x, scqn 0x%x\n",
+ qp->ibqp.qp_num, qp->mqp.qpn, to_mcq(init_attr->recv_cq)->mcq.cqn,
+ to_mcq(init_attr->send_cq)->mcq.cqn);
+
+ qp->xrcdn = xrcdn;
+
+ break;
+
+ case IB_QPT_RAW_IPV6:
+ case IB_QPT_RAW_ETHERTYPE:
+ case IB_QPT_RAW_PACKET:
+ case IB_QPT_MAX:
+ default:
+ mlx5_ib_dbg(dev, "unsupported qp type %d\n",
+ init_attr->qp_type);
+ /* Don't support raw QPs */
+ return ERR_PTR(-EINVAL);
+ }
+
+ return &qp->ibqp;
+}
+
+int mlx5_ib_destroy_qp(struct ib_qp *qp)
+{
+ struct mlx5_ib_dev *dev = to_mdev(qp->device);
+ struct mlx5_ib_qp *mqp = to_mqp(qp);
+
+ destroy_qp_common(dev, mqp);
+
+ kfree(mqp);
+
+ return 0;
+}
+
+static __be32 to_mlx5_access_flags(struct mlx5_ib_qp *qp, const struct ib_qp_attr *attr,
+ int attr_mask)
+{
+ u32 hw_access_flags = 0;
+ u8 dest_rd_atomic;
+ u32 access_flags;
+
+ if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
+ dest_rd_atomic = attr->max_dest_rd_atomic;
+ else
+ dest_rd_atomic = qp->resp_depth;
+
+ if (attr_mask & IB_QP_ACCESS_FLAGS)
+ access_flags = attr->qp_access_flags;
+ else
+ access_flags = qp->atomic_rd_en;
+
+ if (!dest_rd_atomic)
+ access_flags &= IB_ACCESS_REMOTE_WRITE;
+
+ if (access_flags & IB_ACCESS_REMOTE_READ)
+ hw_access_flags |= MLX5_QP_BIT_RRE;
+ if (access_flags & IB_ACCESS_REMOTE_ATOMIC)
+ hw_access_flags |= (MLX5_QP_BIT_RAE | MLX5_ATOMIC_MODE_CX);
+ if (access_flags & IB_ACCESS_REMOTE_WRITE)
+ hw_access_flags |= MLX5_QP_BIT_RWE;
+
+ return cpu_to_be32(hw_access_flags);
+}
+
+enum {
+ MLX5_PATH_FLAG_FL = 1 << 0,
+ MLX5_PATH_FLAG_FREE_AR = 1 << 1,
+ MLX5_PATH_FLAG_COUNTER = 1 << 2,
+};
+
+static int ib_rate_to_mlx5(struct mlx5_ib_dev *dev, u8 rate)
+{
+ if (rate == IB_RATE_PORT_CURRENT) {
+ return 0;
+ } else if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_300_GBPS) {
+ return -EINVAL;
+ } else {
+ while (rate != IB_RATE_2_5_GBPS &&
+ !(1 << (rate + MLX5_STAT_RATE_OFFSET) &
+ dev->mdev.caps.stat_rate_support))
+ --rate;
+ }
+
+ return rate + MLX5_STAT_RATE_OFFSET;
+}
+
+static int mlx5_set_path(struct mlx5_ib_dev *dev, const struct ib_ah_attr *ah,
+ struct mlx5_qp_path *path, u8 port, int attr_mask,
+ u32 path_flags, const struct ib_qp_attr *attr)
+{
+ int err;
+
+ path->fl = (path_flags & MLX5_PATH_FLAG_FL) ? 0x80 : 0;
+ path->free_ar = (path_flags & MLX5_PATH_FLAG_FREE_AR) ? 0x80 : 0;
+
+ if (attr_mask & IB_QP_PKEY_INDEX)
+ path->pkey_index = attr->pkey_index;
+
+ path->grh_mlid = ah->src_path_bits & 0x7f;
+ path->rlid = cpu_to_be16(ah->dlid);
+
+ if (ah->ah_flags & IB_AH_GRH) {
+ path->grh_mlid |= 1 << 7;
+ path->mgid_index = ah->grh.sgid_index;
+ path->hop_limit = ah->grh.hop_limit;
+ path->tclass_flowlabel =
+ cpu_to_be32((ah->grh.traffic_class << 20) |
+ (ah->grh.flow_label));
+ memcpy(path->rgid, ah->grh.dgid.raw, 16);
+ }
+
+ err = ib_rate_to_mlx5(dev, ah->static_rate);
+ if (err < 0)
+ return err;
+ path->static_rate = err;
+ path->port = port;
+
+ if (ah->ah_flags & IB_AH_GRH) {
+ if (ah->grh.sgid_index >= dev->mdev.caps.port[port - 1].gid_table_len) {
+ pr_err(KERN_ERR "sgid_index (%u) too large. max is %d\n",
+ ah->grh.sgid_index, dev->mdev.caps.port[port - 1].gid_table_len);
+ return -EINVAL;
+ }
+
+ path->grh_mlid |= 1 << 7;
+ path->mgid_index = ah->grh.sgid_index;
+ path->hop_limit = ah->grh.hop_limit;
+ path->tclass_flowlabel =
+ cpu_to_be32((ah->grh.traffic_class << 20) |
+ (ah->grh.flow_label));
+ memcpy(path->rgid, ah->grh.dgid.raw, 16);
+ }
+
+ if (attr_mask & IB_QP_TIMEOUT)
+ path->ackto_lt = attr->timeout << 3;
+
+ path->sl = ah->sl & 0xf;
+
+ return 0;
+}
+
+static enum mlx5_qp_optpar opt_mask[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE][MLX5_QP_ST_MAX] = {
+ [MLX5_QP_STATE_INIT] = {
+ [MLX5_QP_STATE_INIT] = {
+ [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE |
+ MLX5_QP_OPTPAR_RAE |
+ MLX5_QP_OPTPAR_RWE |
+ MLX5_QP_OPTPAR_PKEY_INDEX |
+ MLX5_QP_OPTPAR_PRI_PORT,
+ [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE |
+ MLX5_QP_OPTPAR_PKEY_INDEX |
+ MLX5_QP_OPTPAR_PRI_PORT,
+ [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX |
+ MLX5_QP_OPTPAR_Q_KEY |
+ MLX5_QP_OPTPAR_PRI_PORT,
+ },
+ [MLX5_QP_STATE_RTR] = {
+ [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
+ MLX5_QP_OPTPAR_RRE |
+ MLX5_QP_OPTPAR_RAE |
+ MLX5_QP_OPTPAR_RWE |
+ MLX5_QP_OPTPAR_PKEY_INDEX,
+ [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
+ MLX5_QP_OPTPAR_RWE |
+ MLX5_QP_OPTPAR_PKEY_INDEX,
+ [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX |
+ MLX5_QP_OPTPAR_Q_KEY,
+ [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_PKEY_INDEX |
+ MLX5_QP_OPTPAR_Q_KEY,
+ },
+ },
+ [MLX5_QP_STATE_RTR] = {
+ [MLX5_QP_STATE_RTS] = {
+ [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
+ MLX5_QP_OPTPAR_RRE |
+ MLX5_QP_OPTPAR_RAE |
+ MLX5_QP_OPTPAR_RWE |
+ MLX5_QP_OPTPAR_PM_STATE |
+ MLX5_QP_OPTPAR_RNR_TIMEOUT,
+ [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
+ MLX5_QP_OPTPAR_RWE |
+ MLX5_QP_OPTPAR_PM_STATE,
+ [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY,
+ },
+ },
+ [MLX5_QP_STATE_RTS] = {
+ [MLX5_QP_STATE_RTS] = {
+ [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE |
+ MLX5_QP_OPTPAR_RAE |
+ MLX5_QP_OPTPAR_RWE |
+ MLX5_QP_OPTPAR_RNR_TIMEOUT |
+ MLX5_QP_OPTPAR_PM_STATE,
+ [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE |
+ MLX5_QP_OPTPAR_PM_STATE,
+ [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY |
+ MLX5_QP_OPTPAR_SRQN |
+ MLX5_QP_OPTPAR_CQN_RCV,
+ },
+ },
+ [MLX5_QP_STATE_SQER] = {
+ [MLX5_QP_STATE_RTS] = {
+ [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY,
+ [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_Q_KEY,
+ },
+ },
+};
+
+static int ib_nr_to_mlx5_nr(int ib_mask)
+{
+ switch (ib_mask) {
+ case IB_QP_STATE:
+ return 0;
+ case IB_QP_CUR_STATE:
+ return 0;
+ case IB_QP_EN_SQD_ASYNC_NOTIFY:
+ return 0;
+ case IB_QP_ACCESS_FLAGS:
+ return MLX5_QP_OPTPAR_RWE | MLX5_QP_OPTPAR_RRE |
+ MLX5_QP_OPTPAR_RAE;
+ case IB_QP_PKEY_INDEX:
+ return MLX5_QP_OPTPAR_PKEY_INDEX;
+ case IB_QP_PORT:
+ return MLX5_QP_OPTPAR_PRI_PORT;
+ case IB_QP_QKEY:
+ return MLX5_QP_OPTPAR_Q_KEY;
+ case IB_QP_AV:
+ return MLX5_QP_OPTPAR_PRIMARY_ADDR_PATH |
+ MLX5_QP_OPTPAR_PRI_PORT;
+ case IB_QP_PATH_MTU:
+ return 0;
+ case IB_QP_TIMEOUT:
+ return MLX5_QP_OPTPAR_ACK_TIMEOUT;
+ case IB_QP_RETRY_CNT:
+ return MLX5_QP_OPTPAR_RETRY_COUNT;
+ case IB_QP_RNR_RETRY:
+ return MLX5_QP_OPTPAR_RNR_RETRY;
+ case IB_QP_RQ_PSN:
+ return 0;
+ case IB_QP_MAX_QP_RD_ATOMIC:
+ return MLX5_QP_OPTPAR_SRA_MAX;
+ case IB_QP_ALT_PATH:
+ return MLX5_QP_OPTPAR_ALT_ADDR_PATH;
+ case IB_QP_MIN_RNR_TIMER:
+ return MLX5_QP_OPTPAR_RNR_TIMEOUT;
+ case IB_QP_SQ_PSN:
+ return 0;
+ case IB_QP_MAX_DEST_RD_ATOMIC:
+ return MLX5_QP_OPTPAR_RRA_MAX | MLX5_QP_OPTPAR_RWE |
+ MLX5_QP_OPTPAR_RRE | MLX5_QP_OPTPAR_RAE;
+ case IB_QP_PATH_MIG_STATE:
+ return MLX5_QP_OPTPAR_PM_STATE;
+ case IB_QP_CAP:
+ return 0;
+ case IB_QP_DEST_QPN:
+ return 0;
+ }
+ return 0;
+}
+
+static int ib_mask_to_mlx5_opt(int ib_mask)
+{
+ int result = 0;
+ int i;
+
+ for (i = 0; i < 8 * sizeof(int); i++) {
+ if ((1 << i) & ib_mask)
+ result |= ib_nr_to_mlx5_nr(1 << i);
+ }
+
+ return result;
+}
+
+static int __mlx5_ib_modify_qp(struct ib_qp *ibqp,
+ const struct ib_qp_attr *attr, int attr_mask,
+ enum ib_qp_state cur_state, enum ib_qp_state new_state)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
+ struct mlx5_ib_qp *qp = to_mqp(ibqp);
+ struct mlx5_ib_cq *send_cq, *recv_cq;
+ struct mlx5_qp_context *context;
+ struct mlx5_modify_qp_mbox_in *in;
+ struct mlx5_ib_pd *pd;
+ enum mlx5_qp_state mlx5_cur, mlx5_new;
+ enum mlx5_qp_optpar optpar;
+ int sqd_event;
+ int mlx5_st;
+ int err;
+
+ in = kzalloc(sizeof(*in), GFP_KERNEL);
+ if (!in)
+ return -ENOMEM;
+
+ context = &in->ctx;
+ err = to_mlx5_st(ibqp->qp_type);
+ if (err < 0)
+ goto out;
+
+ context->flags = cpu_to_be32(err << 16);
+
+ if (!(attr_mask & IB_QP_PATH_MIG_STATE)) {
+ context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11);
+ } else {
+ switch (attr->path_mig_state) {
+ case IB_MIG_MIGRATED:
+ context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11);
+ break;
+ case IB_MIG_REARM:
+ context->flags |= cpu_to_be32(MLX5_QP_PM_REARM << 11);
+ break;
+ case IB_MIG_ARMED:
+ context->flags |= cpu_to_be32(MLX5_QP_PM_ARMED << 11);
+ break;
+ }
+ }
+
+ if (ibqp->qp_type == IB_QPT_GSI || ibqp->qp_type == IB_QPT_SMI) {
+ context->mtu_msgmax = (IB_MTU_256 << 5) | 8;
+ } else if (ibqp->qp_type == IB_QPT_UD ||
+ ibqp->qp_type == MLX5_IB_QPT_REG_UMR) {
+ context->mtu_msgmax = (IB_MTU_4096 << 5) | 12;
+ } else if (attr_mask & IB_QP_PATH_MTU) {
+ if (attr->path_mtu < IB_MTU_256 ||
+ attr->path_mtu > IB_MTU_4096) {
+ mlx5_ib_warn(dev, "invalid mtu %d\n", attr->path_mtu);
+ err = -EINVAL;
+ goto out;
+ }
+ context->mtu_msgmax = (attr->path_mtu << 5) | dev->mdev.caps.log_max_msg;
+ }
+
+ if (attr_mask & IB_QP_DEST_QPN)
+ context->log_pg_sz_remote_qpn = cpu_to_be32(attr->dest_qp_num);
+
+ if (attr_mask & IB_QP_PKEY_INDEX)
+ context->pri_path.pkey_index = attr->pkey_index;
+
+ /* todo implement counter_index functionality */
+
+ if (is_sqp(ibqp->qp_type))
+ context->pri_path.port = qp->port;
+
+ if (attr_mask & IB_QP_PORT)
+ context->pri_path.port = attr->port_num;
+
+ if (attr_mask & IB_QP_AV) {
+ err = mlx5_set_path(dev, &attr->ah_attr, &context->pri_path,
+ attr_mask & IB_QP_PORT ? attr->port_num : qp->port,
+ attr_mask, 0, attr);
+ if (err)
+ goto out;
+ }
+
+ if (attr_mask & IB_QP_TIMEOUT)
+ context->pri_path.ackto_lt |= attr->timeout << 3;
+
+ if (attr_mask & IB_QP_ALT_PATH) {
+ err = mlx5_set_path(dev, &attr->alt_ah_attr, &context->alt_path,
+ attr->alt_port_num, attr_mask, 0, attr);
+ if (err)
+ goto out;
+ }
+
+ pd = get_pd(qp);
+ get_cqs(qp, &send_cq, &recv_cq);
+
+ context->flags_pd = cpu_to_be32(pd ? pd->pdn : to_mpd(dev->devr.p0)->pdn);
+ context->cqn_send = send_cq ? cpu_to_be32(send_cq->mcq.cqn) : 0;
+ context->cqn_recv = recv_cq ? cpu_to_be32(recv_cq->mcq.cqn) : 0;
+ context->params1 = cpu_to_be32(MLX5_IB_ACK_REQ_FREQ << 28);
+
+ if (attr_mask & IB_QP_RNR_RETRY)
+ context->params1 |= cpu_to_be32(attr->rnr_retry << 13);
+
+ if (attr_mask & IB_QP_RETRY_CNT)
+ context->params1 |= cpu_to_be32(attr->retry_cnt << 16);
+
+ if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
+ if (attr->max_rd_atomic)
+ context->params1 |=
+ cpu_to_be32(fls(attr->max_rd_atomic - 1) << 21);
+ }
+
+ if (attr_mask & IB_QP_SQ_PSN)
+ context->next_send_psn = cpu_to_be32(attr->sq_psn);
+
+ if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
+ if (attr->max_dest_rd_atomic)
+ context->params2 |=
+ cpu_to_be32(fls(attr->max_dest_rd_atomic - 1) << 21);
+ }
+
+ if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC))
+ context->params2 |= to_mlx5_access_flags(qp, attr, attr_mask);
+
+ if (attr_mask & IB_QP_MIN_RNR_TIMER)
+ context->rnr_nextrecvpsn |= cpu_to_be32(attr->min_rnr_timer << 24);
+
+ if (attr_mask & IB_QP_RQ_PSN)
+ context->rnr_nextrecvpsn |= cpu_to_be32(attr->rq_psn);
+
+ if (attr_mask & IB_QP_QKEY)
+ context->qkey = cpu_to_be32(attr->qkey);
+
+ if (qp->rq.wqe_cnt && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
+ context->db_rec_addr = cpu_to_be64(qp->db.dma);
+
+ if (cur_state == IB_QPS_RTS && new_state == IB_QPS_SQD &&
+ attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY && attr->en_sqd_async_notify)
+ sqd_event = 1;
+ else
+ sqd_event = 0;
+
+ if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
+ context->sq_crq_size |= cpu_to_be16(1 << 4);
+
+
+ mlx5_cur = to_mlx5_state(cur_state);
+ mlx5_new = to_mlx5_state(new_state);
+ mlx5_st = to_mlx5_st(ibqp->qp_type);
+ if (mlx5_cur < 0 || mlx5_new < 0 || mlx5_st < 0)
+ goto out;
+
+ optpar = ib_mask_to_mlx5_opt(attr_mask);
+ optpar &= opt_mask[mlx5_cur][mlx5_new][mlx5_st];
+ in->optparam = cpu_to_be32(optpar);
+ err = mlx5_core_qp_modify(&dev->mdev, to_mlx5_state(cur_state),
+ to_mlx5_state(new_state), in, sqd_event,
+ &qp->mqp);
+ if (err)
+ goto out;
+
+ qp->state = new_state;
+
+ if (attr_mask & IB_QP_ACCESS_FLAGS)
+ qp->atomic_rd_en = attr->qp_access_flags;
+ if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
+ qp->resp_depth = attr->max_dest_rd_atomic;
+ if (attr_mask & IB_QP_PORT)
+ qp->port = attr->port_num;
+ if (attr_mask & IB_QP_ALT_PATH)
+ qp->alt_port = attr->alt_port_num;
+
+ /*
+ * If we moved a kernel QP to RESET, clean up all old CQ
+ * entries and reinitialize the QP.
+ */
+ if (new_state == IB_QPS_RESET && !ibqp->uobject) {
+ mlx5_ib_cq_clean(recv_cq, qp->mqp.qpn,
+ ibqp->srq ? to_msrq(ibqp->srq) : NULL);
+ if (send_cq != recv_cq)
+ mlx5_ib_cq_clean(send_cq, qp->mqp.qpn, NULL);
+
+ qp->rq.head = 0;
+ qp->rq.tail = 0;
+ qp->sq.head = 0;
+ qp->sq.tail = 0;
+ qp->sq.cur_post = 0;
+ qp->sq.last_poll = 0;
+ qp->db.db[MLX5_RCV_DBR] = 0;
+ qp->db.db[MLX5_SND_DBR] = 0;
+ }
+
+out:
+ kfree(in);
+ return err;
+}
+
+int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+ int attr_mask, struct ib_udata *udata)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
+ struct mlx5_ib_qp *qp = to_mqp(ibqp);
+ enum ib_qp_state cur_state, new_state;
+ int err = -EINVAL;
+ int port;
+
+ mutex_lock(&qp->mutex);
+
+ cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state;
+ new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state;
+
+ if (ibqp->qp_type != MLX5_IB_QPT_REG_UMR &&
+ !ib_modify_qp_is_ok(cur_state, new_state, ibqp->qp_type, attr_mask))
+ goto out;
+
+ if ((attr_mask & IB_QP_PORT) &&
+ (attr->port_num == 0 || attr->port_num > dev->mdev.caps.num_ports))
+ goto out;
+
+ if (attr_mask & IB_QP_PKEY_INDEX) {
+ port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
+ if (attr->pkey_index >= dev->mdev.caps.port[port - 1].pkey_table_len)
+ goto out;
+ }
+
+ if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
+ attr->max_rd_atomic > dev->mdev.caps.max_ra_res_qp)
+ goto out;
+
+ if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
+ attr->max_dest_rd_atomic > dev->mdev.caps.max_ra_req_qp)
+ goto out;
+
+ if (cur_state == new_state && cur_state == IB_QPS_RESET) {
+ err = 0;
+ goto out;
+ }
+
+ err = __mlx5_ib_modify_qp(ibqp, attr, attr_mask, cur_state, new_state);
+
+out:
+ mutex_unlock(&qp->mutex);
+ return err;
+}
+
+static int mlx5_wq_overflow(struct mlx5_ib_wq *wq, int nreq, struct ib_cq *ib_cq)
+{
+ struct mlx5_ib_cq *cq;
+ unsigned cur;
+
+ cur = wq->head - wq->tail;
+ if (likely(cur + nreq < wq->max_post))
+ return 0;
+
+ cq = to_mcq(ib_cq);
+ spin_lock(&cq->lock);
+ cur = wq->head - wq->tail;
+ spin_unlock(&cq->lock);
+
+ return cur + nreq >= wq->max_post;
+}
+
+static __always_inline void set_raddr_seg(struct mlx5_wqe_raddr_seg *rseg,
+ u64 remote_addr, u32 rkey)
+{
+ rseg->raddr = cpu_to_be64(remote_addr);
+ rseg->rkey = cpu_to_be32(rkey);
+ rseg->reserved = 0;
+}
+
+static void set_atomic_seg(struct mlx5_wqe_atomic_seg *aseg, struct ib_send_wr *wr)
+{
+ if (wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP) {
+ aseg->swap_add = cpu_to_be64(wr->wr.atomic.swap);
+ aseg->compare = cpu_to_be64(wr->wr.atomic.compare_add);
+ } else if (wr->opcode == IB_WR_MASKED_ATOMIC_FETCH_AND_ADD) {
+ aseg->swap_add = cpu_to_be64(wr->wr.atomic.compare_add);
+ aseg->compare = cpu_to_be64(wr->wr.atomic.compare_add_mask);
+ } else {
+ aseg->swap_add = cpu_to_be64(wr->wr.atomic.compare_add);
+ aseg->compare = 0;
+ }
+}
+
+static void set_masked_atomic_seg(struct mlx5_wqe_masked_atomic_seg *aseg,
+ struct ib_send_wr *wr)
+{
+ aseg->swap_add = cpu_to_be64(wr->wr.atomic.swap);
+ aseg->swap_add_mask = cpu_to_be64(wr->wr.atomic.swap_mask);
+ aseg->compare = cpu_to_be64(wr->wr.atomic.compare_add);
+ aseg->compare_mask = cpu_to_be64(wr->wr.atomic.compare_add_mask);
+}
+
+static void set_datagram_seg(struct mlx5_wqe_datagram_seg *dseg,
+ struct ib_send_wr *wr)
+{
+ memcpy(&dseg->av, &to_mah(wr->wr.ud.ah)->av, sizeof(struct mlx5_av));
+ dseg->av.dqp_dct = cpu_to_be32(wr->wr.ud.remote_qpn | MLX5_EXTENDED_UD_AV);
+ dseg->av.key.qkey.qkey = cpu_to_be32(wr->wr.ud.remote_qkey);
+}
+
+static void set_data_ptr_seg(struct mlx5_wqe_data_seg *dseg, struct ib_sge *sg)
+{
+ dseg->byte_count = cpu_to_be32(sg->length);
+ dseg->lkey = cpu_to_be32(sg->lkey);
+ dseg->addr = cpu_to_be64(sg->addr);
+}
+
+static __be16 get_klm_octo(int npages)
+{
+ return cpu_to_be16(ALIGN(npages, 8) / 2);
+}
+
+static __be64 frwr_mkey_mask(void)
+{
+ u64 result;
+
+ result = MLX5_MKEY_MASK_LEN |
+ MLX5_MKEY_MASK_PAGE_SIZE |
+ MLX5_MKEY_MASK_START_ADDR |
+ MLX5_MKEY_MASK_EN_RINVAL |
+ MLX5_MKEY_MASK_KEY |
+ MLX5_MKEY_MASK_LR |
+ MLX5_MKEY_MASK_LW |
+ MLX5_MKEY_MASK_RR |
+ MLX5_MKEY_MASK_RW |
+ MLX5_MKEY_MASK_A |
+ MLX5_MKEY_MASK_SMALL_FENCE |
+ MLX5_MKEY_MASK_FREE;
+
+ return cpu_to_be64(result);
+}
+
+static void set_frwr_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr,
+ struct ib_send_wr *wr, int li)
+{
+ memset(umr, 0, sizeof(*umr));
+
+ if (li) {
+ umr->mkey_mask = cpu_to_be64(MLX5_MKEY_MASK_FREE);
+ umr->flags = 1 << 7;
+ return;
+ }
+
+ umr->flags = (1 << 5); /* fail if not free */
+ umr->klm_octowords = get_klm_octo(wr->wr.fast_reg.page_list_len);
+ umr->mkey_mask = frwr_mkey_mask();
+}
+
+static void set_reg_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr,
+ struct ib_send_wr *wr)
+{
+ struct umr_wr *umrwr = (struct umr_wr *)&wr->wr.fast_reg;
+ u64 mask;
+
+ memset(umr, 0, sizeof(*umr));
+
+ if (!(wr->send_flags & MLX5_IB_SEND_UMR_UNREG)) {
+ umr->flags = 1 << 5; /* fail if not free */
+ umr->klm_octowords = get_klm_octo(umrwr->npages);
+ mask = MLX5_MKEY_MASK_LEN |
+ MLX5_MKEY_MASK_PAGE_SIZE |
+ MLX5_MKEY_MASK_START_ADDR |
+ MLX5_MKEY_MASK_PD |
+ MLX5_MKEY_MASK_LR |
+ MLX5_MKEY_MASK_LW |
+ MLX5_MKEY_MASK_RR |
+ MLX5_MKEY_MASK_RW |
+ MLX5_MKEY_MASK_A |
+ MLX5_MKEY_MASK_FREE;
+ umr->mkey_mask = cpu_to_be64(mask);
+ } else {
+ umr->flags = 2 << 5; /* fail if free */
+ mask = MLX5_MKEY_MASK_FREE;
+ umr->mkey_mask = cpu_to_be64(mask);
+ }
+
+ if (!wr->num_sge)
+ umr->flags |= (1 << 7); /* inline */
+}
+
+static u8 get_umr_flags(int acc)
+{
+ return (acc & IB_ACCESS_REMOTE_ATOMIC ? MLX5_PERM_ATOMIC : 0) |
+ (acc & IB_ACCESS_REMOTE_WRITE ? MLX5_PERM_REMOTE_WRITE : 0) |
+ (acc & IB_ACCESS_REMOTE_READ ? MLX5_PERM_REMOTE_READ : 0) |
+ (acc & IB_ACCESS_LOCAL_WRITE ? MLX5_PERM_LOCAL_WRITE : 0) |
+ MLX5_PERM_LOCAL_READ | MLX5_PERM_UMR_EN | MLX5_ACCESS_MODE_MTT;
+}
+
+static void set_mkey_segment(struct mlx5_mkey_seg *seg, struct ib_send_wr *wr,
+ int li, int *writ)
+{
+ memset(seg, 0, sizeof(*seg));
+ if (li) {
+ seg->status = 1 << 6;
+ return;
+ }
+
+ seg->flags = get_umr_flags(wr->wr.fast_reg.access_flags);
+ *writ = seg->flags & (MLX5_PERM_LOCAL_WRITE | IB_ACCESS_REMOTE_WRITE);
+ seg->qpn_mkey7_0 = cpu_to_be32((wr->wr.fast_reg.rkey & 0xff) | 0xffffff00);
+ seg->flags_pd = cpu_to_be32(MLX5_MKEY_REMOTE_INVAL);
+ seg->start_addr = cpu_to_be64(wr->wr.fast_reg.iova_start);
+ seg->len = cpu_to_be64(wr->wr.fast_reg.length);
+ seg->xlt_oct_size = cpu_to_be32((wr->wr.fast_reg.page_list_len + 1) / 2);
+ seg->log2_page_size = wr->wr.fast_reg.page_shift;
+}
+
+static void set_reg_mkey_segment(struct mlx5_mkey_seg *seg, struct ib_send_wr *wr)
+{
+ memset(seg, 0, sizeof(*seg));
+ if (wr->send_flags & MLX5_IB_SEND_UMR_UNREG) {
+ seg->status = 1 << 6;
+ return;
+ }
+
+ seg->flags = convert_access(wr->wr.fast_reg.access_flags);
+ seg->flags_pd = cpu_to_be32(to_mpd((struct ib_pd *)wr->wr.fast_reg.page_list)->pdn);
+ seg->start_addr = cpu_to_be64(wr->wr.fast_reg.iova_start);
+ seg->len = cpu_to_be64(wr->wr.fast_reg.length);
+ seg->log2_page_size = wr->wr.fast_reg.page_shift;
+ seg->qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
+}
+
+static void set_frwr_pages(struct mlx5_wqe_data_seg *dseg,
+ struct ib_send_wr *wr,
+ struct mlx5_core_dev *mdev,
+ struct mlx5_ib_pd *pd,
+ int writ)
+{
+ struct mlx5_ib_fast_reg_page_list *mfrpl = to_mfrpl(wr->wr.fast_reg.page_list);
+ u64 *page_list = wr->wr.fast_reg.page_list->page_list;
+ u64 perm = MLX5_EN_RD | (writ ? MLX5_EN_WR : 0);
+ int i;
+
+ for (i = 0; i < wr->wr.fast_reg.page_list_len; i++)
+ mfrpl->mapped_page_list[i] = cpu_to_be64(page_list[i] | perm);
+ dseg->addr = cpu_to_be64(mfrpl->map);
+ dseg->byte_count = cpu_to_be32(ALIGN(sizeof(u64) * wr->wr.fast_reg.page_list_len, 64));
+ dseg->lkey = cpu_to_be32(pd->pa_lkey);
+}
+
+static __be32 send_ieth(struct ib_send_wr *wr)
+{
+ switch (wr->opcode) {
+ case IB_WR_SEND_WITH_IMM:
+ case IB_WR_RDMA_WRITE_WITH_IMM:
+ return wr->ex.imm_data;
+
+ case IB_WR_SEND_WITH_INV:
+ return cpu_to_be32(wr->ex.invalidate_rkey);
+
+ default:
+ return 0;
+ }
+}
+
+static u8 calc_sig(void *wqe, int size)
+{
+ u8 *p = wqe;
+ u8 res = 0;
+ int i;
+
+ for (i = 0; i < size; i++)
+ res ^= p[i];
+
+ return ~res;
+}
+
+static u8 wq_sig(void *wqe)
+{
+ return calc_sig(wqe, (*((u8 *)wqe + 8) & 0x3f) << 4);
+}
+
+static int set_data_inl_seg(struct mlx5_ib_qp *qp, struct ib_send_wr *wr,
+ void *wqe, int *sz)
+{
+ struct mlx5_wqe_inline_seg *seg;
+ void *qend = qp->sq.qend;
+ void *addr;
+ int inl = 0;
+ int copy;
+ int len;
+ int i;
+
+ seg = wqe;
+ wqe += sizeof(*seg);
+ for (i = 0; i < wr->num_sge; i++) {
+ addr = (void *)(unsigned long)(wr->sg_list[i].addr);
+ len = wr->sg_list[i].length;
+ inl += len;
+
+ if (unlikely(inl > qp->max_inline_data))
+ return -ENOMEM;
+
+ if (unlikely(wqe + len > qend)) {
+ copy = qend - wqe;
+ memcpy(wqe, addr, copy);
+ addr += copy;
+ len -= copy;
+ wqe = mlx5_get_send_wqe(qp, 0);
+ }
+ memcpy(wqe, addr, len);
+ wqe += len;
+ }
+
+ seg->byte_count = cpu_to_be32(inl | MLX5_INLINE_SEG);
+
+ *sz = ALIGN(inl + sizeof(seg->byte_count), 16) / 16;
+
+ return 0;
+}
+
+static int set_frwr_li_wr(void **seg, struct ib_send_wr *wr, int *size,
+ struct mlx5_core_dev *mdev, struct mlx5_ib_pd *pd, struct mlx5_ib_qp *qp)
+{
+ int writ = 0;
+ int li;
+
+ li = wr->opcode == IB_WR_LOCAL_INV ? 1 : 0;
+ if (unlikely(wr->send_flags & IB_SEND_INLINE))
+ return -EINVAL;
+
+ set_frwr_umr_segment(*seg, wr, li);
+ *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
+ *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
+ if (unlikely((*seg == qp->sq.qend)))
+ *seg = mlx5_get_send_wqe(qp, 0);
+ set_mkey_segment(*seg, wr, li, &writ);
+ *seg += sizeof(struct mlx5_mkey_seg);
+ *size += sizeof(struct mlx5_mkey_seg) / 16;
+ if (unlikely((*seg == qp->sq.qend)))
+ *seg = mlx5_get_send_wqe(qp, 0);
+ if (!li) {
+ set_frwr_pages(*seg, wr, mdev, pd, writ);
+ *seg += sizeof(struct mlx5_wqe_data_seg);
+ *size += (sizeof(struct mlx5_wqe_data_seg) / 16);
+ }
+ return 0;
+}
+
+static void dump_wqe(struct mlx5_ib_qp *qp, int idx, int size_16)
+{
+ __be32 *p = NULL;
+ int tidx = idx;
+ int i, j;
+
+ pr_debug("dump wqe at %p\n", mlx5_get_send_wqe(qp, tidx));
+ for (i = 0, j = 0; i < size_16 * 4; i += 4, j += 4) {
+ if ((i & 0xf) == 0) {
+ void *buf = mlx5_get_send_wqe(qp, tidx);
+ tidx = (tidx + 1) & (qp->sq.wqe_cnt - 1);
+ p = buf;
+ j = 0;
+ }
+ pr_debug("%08x %08x %08x %08x\n", be32_to_cpu(p[j]),
+ be32_to_cpu(p[j + 1]), be32_to_cpu(p[j + 2]),
+ be32_to_cpu(p[j + 3]));
+ }
+}
+
+static void mlx5_bf_copy(u64 __iomem *dst, u64 *src,
+ unsigned bytecnt, struct mlx5_ib_qp *qp)
+{
+ while (bytecnt > 0) {
+ __iowrite64_copy(dst++, src++, 8);
+ __iowrite64_copy(dst++, src++, 8);
+ __iowrite64_copy(dst++, src++, 8);
+ __iowrite64_copy(dst++, src++, 8);
+ __iowrite64_copy(dst++, src++, 8);
+ __iowrite64_copy(dst++, src++, 8);
+ __iowrite64_copy(dst++, src++, 8);
+ __iowrite64_copy(dst++, src++, 8);
+ bytecnt -= 64;
+ if (unlikely(src == qp->sq.qend))
+ src = mlx5_get_send_wqe(qp, 0);
+ }
+}
+
+static u8 get_fence(u8 fence, struct ib_send_wr *wr)
+{
+ if (unlikely(wr->opcode == IB_WR_LOCAL_INV &&
+ wr->send_flags & IB_SEND_FENCE))
+ return MLX5_FENCE_MODE_STRONG_ORDERING;
+
+ if (unlikely(fence)) {
+ if (wr->send_flags & IB_SEND_FENCE)
+ return MLX5_FENCE_MODE_SMALL_AND_FENCE;
+ else
+ return fence;
+
+ } else {
+ return 0;
+ }
+}
+
+int mlx5_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
+ struct ib_send_wr **bad_wr)
+{
+ struct mlx5_wqe_ctrl_seg *ctrl = NULL; /* compiler warning */
+ struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
+ struct mlx5_core_dev *mdev = &dev->mdev;
+ struct mlx5_ib_qp *qp = to_mqp(ibqp);
+ struct mlx5_wqe_data_seg *dpseg;
+ struct mlx5_wqe_xrc_seg *xrc;
+ struct mlx5_bf *bf = qp->bf;
+ int uninitialized_var(size);
+ void *qend = qp->sq.qend;
+ unsigned long flags;
+ u32 mlx5_opcode;
+ unsigned idx;
+ int err = 0;
+ int inl = 0;
+ int num_sge;
+ void *seg;
+ int nreq;
+ int i;
+ u8 next_fence = 0;
+ u8 opmod = 0;
+ u8 fence;
+
+ spin_lock_irqsave(&qp->sq.lock, flags);
+
+ for (nreq = 0; wr; nreq++, wr = wr->next) {
+ if (unlikely(wr->opcode >= sizeof(mlx5_ib_opcode) / sizeof(mlx5_ib_opcode[0]))) {
+ mlx5_ib_warn(dev, "\n");
+ err = -EINVAL;
+ *bad_wr = wr;
+ goto out;
+ }
+
+ if (unlikely(mlx5_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq))) {
+ mlx5_ib_warn(dev, "\n");
+ err = -ENOMEM;
+ *bad_wr = wr;
+ goto out;
+ }
+
+ fence = qp->fm_cache;
+ num_sge = wr->num_sge;
+ if (unlikely(num_sge > qp->sq.max_gs)) {
+ mlx5_ib_warn(dev, "\n");
+ err = -ENOMEM;
+ *bad_wr = wr;
+ goto out;
+ }
+
+ idx = qp->sq.cur_post & (qp->sq.wqe_cnt - 1);
+ seg = mlx5_get_send_wqe(qp, idx);
+ ctrl = seg;
+ *(uint32_t *)(seg + 8) = 0;
+ ctrl->imm = send_ieth(wr);
+ ctrl->fm_ce_se = qp->sq_signal_bits |
+ (wr->send_flags & IB_SEND_SIGNALED ?
+ MLX5_WQE_CTRL_CQ_UPDATE : 0) |
+ (wr->send_flags & IB_SEND_SOLICITED ?
+ MLX5_WQE_CTRL_SOLICITED : 0);
+
+ seg += sizeof(*ctrl);
+ size = sizeof(*ctrl) / 16;
+
+ switch (ibqp->qp_type) {
+ case IB_QPT_XRC_INI:
+ xrc = seg;
+ xrc->xrc_srqn = htonl(wr->xrc_remote_srq_num);
+ seg += sizeof(*xrc);
+ size += sizeof(*xrc) / 16;
+ /* fall through */
+ case IB_QPT_RC:
+ switch (wr->opcode) {
+ case IB_WR_RDMA_READ:
+ case IB_WR_RDMA_WRITE:
+ case IB_WR_RDMA_WRITE_WITH_IMM:
+ set_raddr_seg(seg, wr->wr.rdma.remote_addr,
+ wr->wr.rdma.rkey);
+ seg += sizeof(struct mlx5_wqe_raddr_seg);
+ size += sizeof(struct mlx5_wqe_raddr_seg) / 16;
+ break;
+
+ case IB_WR_ATOMIC_CMP_AND_SWP:
+ case IB_WR_ATOMIC_FETCH_AND_ADD:
+ set_raddr_seg(seg, wr->wr.atomic.remote_addr,
+ wr->wr.atomic.rkey);
+ seg += sizeof(struct mlx5_wqe_raddr_seg);
+
+ set_atomic_seg(seg, wr);
+ seg += sizeof(struct mlx5_wqe_atomic_seg);
+
+ size += (sizeof(struct mlx5_wqe_raddr_seg) +
+ sizeof(struct mlx5_wqe_atomic_seg)) / 16;
+ break;
+
+ case IB_WR_MASKED_ATOMIC_CMP_AND_SWP:
+ set_raddr_seg(seg, wr->wr.atomic.remote_addr,
+ wr->wr.atomic.rkey);
+ seg += sizeof(struct mlx5_wqe_raddr_seg);
+
+ set_masked_atomic_seg(seg, wr);
+ seg += sizeof(struct mlx5_wqe_masked_atomic_seg);
+
+ size += (sizeof(struct mlx5_wqe_raddr_seg) +
+ sizeof(struct mlx5_wqe_masked_atomic_seg)) / 16;
+ break;
+
+ case IB_WR_LOCAL_INV:
+ next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL;
+ qp->sq.wr_data[idx] = IB_WR_LOCAL_INV;
+ ctrl->imm = cpu_to_be32(wr->ex.invalidate_rkey);
+ err = set_frwr_li_wr(&seg, wr, &size, mdev, to_mpd(ibqp->pd), qp);
+ if (err) {
+ mlx5_ib_warn(dev, "\n");
+ *bad_wr = wr;
+ goto out;
+ }
+ num_sge = 0;
+ break;
+
+ case IB_WR_FAST_REG_MR:
+ next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL;
+ qp->sq.wr_data[idx] = IB_WR_FAST_REG_MR;
+ ctrl->imm = cpu_to_be32(wr->wr.fast_reg.rkey);
+ err = set_frwr_li_wr(&seg, wr, &size, mdev, to_mpd(ibqp->pd), qp);
+ if (err) {
+ mlx5_ib_warn(dev, "\n");
+ *bad_wr = wr;
+ goto out;
+ }
+ num_sge = 0;
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ case IB_QPT_UC:
+ switch (wr->opcode) {
+ case IB_WR_RDMA_WRITE:
+ case IB_WR_RDMA_WRITE_WITH_IMM:
+ set_raddr_seg(seg, wr->wr.rdma.remote_addr,
+ wr->wr.rdma.rkey);
+ seg += sizeof(struct mlx5_wqe_raddr_seg);
+ size += sizeof(struct mlx5_wqe_raddr_seg) / 16;
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ case IB_QPT_UD:
+ case IB_QPT_SMI:
+ case IB_QPT_GSI:
+ set_datagram_seg(seg, wr);
+ seg += sizeof(struct mlx5_wqe_datagram_seg);
+ size += sizeof(struct mlx5_wqe_datagram_seg) / 16;
+ if (unlikely((seg == qend)))
+ seg = mlx5_get_send_wqe(qp, 0);
+ break;
+
+ case MLX5_IB_QPT_REG_UMR:
+ if (wr->opcode != MLX5_IB_WR_UMR) {
+ err = -EINVAL;
+ mlx5_ib_warn(dev, "bad opcode\n");
+ goto out;
+ }
+ qp->sq.wr_data[idx] = MLX5_IB_WR_UMR;
+ ctrl->imm = cpu_to_be32(wr->wr.fast_reg.rkey);
+ set_reg_umr_segment(seg, wr);
+ seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
+ size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
+ if (unlikely((seg == qend)))
+ seg = mlx5_get_send_wqe(qp, 0);
+ set_reg_mkey_segment(seg, wr);
+ seg += sizeof(struct mlx5_mkey_seg);
+ size += sizeof(struct mlx5_mkey_seg) / 16;
+ if (unlikely((seg == qend)))
+ seg = mlx5_get_send_wqe(qp, 0);
+ break;
+
+ default:
+ break;
+ }
+
+ if (wr->send_flags & IB_SEND_INLINE && num_sge) {
+ int uninitialized_var(sz);
+
+ err = set_data_inl_seg(qp, wr, seg, &sz);
+ if (unlikely(err)) {
+ mlx5_ib_warn(dev, "\n");
+ *bad_wr = wr;
+ goto out;
+ }
+ inl = 1;
+ size += sz;
+ } else {
+ dpseg = seg;
+ for (i = 0; i < num_sge; i++) {
+ if (unlikely(dpseg == qend)) {
+ seg = mlx5_get_send_wqe(qp, 0);
+ dpseg = seg;
+ }
+ if (likely(wr->sg_list[i].length)) {
+ set_data_ptr_seg(dpseg, wr->sg_list + i);
+ size += sizeof(struct mlx5_wqe_data_seg) / 16;
+ dpseg++;
+ }
+ }
+ }
+
+ mlx5_opcode = mlx5_ib_opcode[wr->opcode];
+ ctrl->opmod_idx_opcode = cpu_to_be32(((u32)(qp->sq.cur_post) << 8) |
+ mlx5_opcode |
+ ((u32)opmod << 24));
+ ctrl->qpn_ds = cpu_to_be32(size | (qp->mqp.qpn << 8));
+ ctrl->fm_ce_se |= get_fence(fence, wr);
+ qp->fm_cache = next_fence;
+ if (unlikely(qp->wq_sig))
+ ctrl->signature = wq_sig(ctrl);
+
+ qp->sq.wrid[idx] = wr->wr_id;
+ qp->sq.w_list[idx].opcode = mlx5_opcode;
+ qp->sq.wqe_head[idx] = qp->sq.head + nreq;
+ qp->sq.cur_post += DIV_ROUND_UP(size * 16, MLX5_SEND_WQE_BB);
+ qp->sq.w_list[idx].next = qp->sq.cur_post;
+
+ if (0)
+ dump_wqe(qp, idx, size);
+ }
+
+out:
+ if (likely(nreq)) {
+ qp->sq.head += nreq;
+
+ /* Make sure that descriptors are written before
+ * updating doorbell record and ringing the doorbell
+ */
+ wmb();
+
+ qp->db.db[MLX5_SND_DBR] = cpu_to_be32(qp->sq.cur_post);
+
+ if (bf->need_lock)
+ spin_lock(&bf->lock);
+
+ /* TBD enable WC */
+ if (0 && nreq == 1 && bf->uuarn && inl && size > 1 && size <= bf->buf_size / 16) {
+ mlx5_bf_copy(bf->reg + bf->offset, (u64 *)ctrl, ALIGN(size * 16, 64), qp);
+ /* wc_wmb(); */
+ } else {
+ mlx5_write64((__be32 *)ctrl, bf->regreg + bf->offset,
+ MLX5_GET_DOORBELL_LOCK(&bf->lock32));
+ /* Make sure doorbells don't leak out of SQ spinlock
+ * and reach the HCA out of order.
+ */
+ mmiowb();
+ }
+ bf->offset ^= bf->buf_size;
+ if (bf->need_lock)
+ spin_unlock(&bf->lock);
+ }
+
+ spin_unlock_irqrestore(&qp->sq.lock, flags);
+
+ return err;
+}
+
+static void set_sig_seg(struct mlx5_rwqe_sig *sig, int size)
+{
+ sig->signature = calc_sig(sig, size);
+}
+
+int mlx5_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
+ struct ib_recv_wr **bad_wr)
+{
+ struct mlx5_ib_qp *qp = to_mqp(ibqp);
+ struct mlx5_wqe_data_seg *scat;
+ struct mlx5_rwqe_sig *sig;
+ unsigned long flags;
+ int err = 0;
+ int nreq;
+ int ind;
+ int i;
+
+ spin_lock_irqsave(&qp->rq.lock, flags);
+
+ ind = qp->rq.head & (qp->rq.wqe_cnt - 1);
+
+ for (nreq = 0; wr; nreq++, wr = wr->next) {
+ if (mlx5_wq_overflow(&qp->rq, nreq, qp->ibqp.recv_cq)) {
+ err = -ENOMEM;
+ *bad_wr = wr;
+ goto out;
+ }
+
+ if (unlikely(wr->num_sge > qp->rq.max_gs)) {
+ err = -EINVAL;
+ *bad_wr = wr;
+ goto out;
+ }
+
+ scat = get_recv_wqe(qp, ind);
+ if (qp->wq_sig)
+ scat++;
+
+ for (i = 0; i < wr->num_sge; i++)
+ set_data_ptr_seg(scat + i, wr->sg_list + i);
+
+ if (i < qp->rq.max_gs) {
+ scat[i].byte_count = 0;
+ scat[i].lkey = cpu_to_be32(MLX5_INVALID_LKEY);
+ scat[i].addr = 0;
+ }
+
+ if (qp->wq_sig) {
+ sig = (struct mlx5_rwqe_sig *)scat;
+ set_sig_seg(sig, (qp->rq.max_gs + 1) << 2);
+ }
+
+ qp->rq.wrid[ind] = wr->wr_id;
+
+ ind = (ind + 1) & (qp->rq.wqe_cnt - 1);
+ }
+
+out:
+ if (likely(nreq)) {
+ qp->rq.head += nreq;
+
+ /* Make sure that descriptors are written before
+ * doorbell record.
+ */
+ wmb();
+
+ *qp->db.db = cpu_to_be32(qp->rq.head & 0xffff);
+ }
+
+ spin_unlock_irqrestore(&qp->rq.lock, flags);
+
+ return err;
+}
+
+static inline enum ib_qp_state to_ib_qp_state(enum mlx5_qp_state mlx5_state)
+{
+ switch (mlx5_state) {
+ case MLX5_QP_STATE_RST: return IB_QPS_RESET;
+ case MLX5_QP_STATE_INIT: return IB_QPS_INIT;
+ case MLX5_QP_STATE_RTR: return IB_QPS_RTR;
+ case MLX5_QP_STATE_RTS: return IB_QPS_RTS;
+ case MLX5_QP_STATE_SQ_DRAINING:
+ case MLX5_QP_STATE_SQD: return IB_QPS_SQD;
+ case MLX5_QP_STATE_SQER: return IB_QPS_SQE;
+ case MLX5_QP_STATE_ERR: return IB_QPS_ERR;
+ default: return -1;
+ }
+}
+
+static inline enum ib_mig_state to_ib_mig_state(int mlx5_mig_state)
+{
+ switch (mlx5_mig_state) {
+ case MLX5_QP_PM_ARMED: return IB_MIG_ARMED;
+ case MLX5_QP_PM_REARM: return IB_MIG_REARM;
+ case MLX5_QP_PM_MIGRATED: return IB_MIG_MIGRATED;
+ default: return -1;
+ }
+}
+
+static int to_ib_qp_access_flags(int mlx5_flags)
+{
+ int ib_flags = 0;
+
+ if (mlx5_flags & MLX5_QP_BIT_RRE)
+ ib_flags |= IB_ACCESS_REMOTE_READ;
+ if (mlx5_flags & MLX5_QP_BIT_RWE)
+ ib_flags |= IB_ACCESS_REMOTE_WRITE;
+ if (mlx5_flags & MLX5_QP_BIT_RAE)
+ ib_flags |= IB_ACCESS_REMOTE_ATOMIC;
+
+ return ib_flags;
+}
+
+static void to_ib_ah_attr(struct mlx5_ib_dev *ibdev, struct ib_ah_attr *ib_ah_attr,
+ struct mlx5_qp_path *path)
+{
+ struct mlx5_core_dev *dev = &ibdev->mdev;
+
+ memset(ib_ah_attr, 0, sizeof(*ib_ah_attr));
+ ib_ah_attr->port_num = path->port;
+
+ if (ib_ah_attr->port_num == 0 || ib_ah_attr->port_num > dev->caps.num_ports)
+ return;
+
+ ib_ah_attr->sl = path->sl & 0xf;
+
+ ib_ah_attr->dlid = be16_to_cpu(path->rlid);
+ ib_ah_attr->src_path_bits = path->grh_mlid & 0x7f;
+ ib_ah_attr->static_rate = path->static_rate ? path->static_rate - 5 : 0;
+ ib_ah_attr->ah_flags = (path->grh_mlid & (1 << 7)) ? IB_AH_GRH : 0;
+ if (ib_ah_attr->ah_flags) {
+ ib_ah_attr->grh.sgid_index = path->mgid_index;
+ ib_ah_attr->grh.hop_limit = path->hop_limit;
+ ib_ah_attr->grh.traffic_class =
+ (be32_to_cpu(path->tclass_flowlabel) >> 20) & 0xff;
+ ib_ah_attr->grh.flow_label =
+ be32_to_cpu(path->tclass_flowlabel) & 0xfffff;
+ memcpy(ib_ah_attr->grh.dgid.raw,
+ path->rgid, sizeof(ib_ah_attr->grh.dgid.raw));
+ }
+}
+
+int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
+ struct ib_qp_init_attr *qp_init_attr)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
+ struct mlx5_ib_qp *qp = to_mqp(ibqp);
+ struct mlx5_query_qp_mbox_out *outb;
+ struct mlx5_qp_context *context;
+ int mlx5_state;
+ int err = 0;
+
+ mutex_lock(&qp->mutex);
+ outb = kzalloc(sizeof(*outb), GFP_KERNEL);
+ if (!outb) {
+ err = -ENOMEM;
+ goto out;
+ }
+ context = &outb->ctx;
+ err = mlx5_core_qp_query(&dev->mdev, &qp->mqp, outb, sizeof(*outb));
+ if (err)
+ goto out_free;
+
+ mlx5_state = be32_to_cpu(context->flags) >> 28;
+
+ qp->state = to_ib_qp_state(mlx5_state);
+ qp_attr->qp_state = qp->state;
+ qp_attr->path_mtu = context->mtu_msgmax >> 5;
+ qp_attr->path_mig_state =
+ to_ib_mig_state((be32_to_cpu(context->flags) >> 11) & 0x3);
+ qp_attr->qkey = be32_to_cpu(context->qkey);
+ qp_attr->rq_psn = be32_to_cpu(context->rnr_nextrecvpsn) & 0xffffff;
+ qp_attr->sq_psn = be32_to_cpu(context->next_send_psn) & 0xffffff;
+ qp_attr->dest_qp_num = be32_to_cpu(context->log_pg_sz_remote_qpn) & 0xffffff;
+ qp_attr->qp_access_flags =
+ to_ib_qp_access_flags(be32_to_cpu(context->params2));
+
+ if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC) {
+ to_ib_ah_attr(dev, &qp_attr->ah_attr, &context->pri_path);
+ to_ib_ah_attr(dev, &qp_attr->alt_ah_attr, &context->alt_path);
+ qp_attr->alt_pkey_index = context->alt_path.pkey_index & 0x7f;
+ qp_attr->alt_port_num = qp_attr->alt_ah_attr.port_num;
+ }
+
+ qp_attr->pkey_index = context->pri_path.pkey_index & 0x7f;
+ qp_attr->port_num = context->pri_path.port;
+
+ /* qp_attr->en_sqd_async_notify is only applicable in modify qp */
+ qp_attr->sq_draining = mlx5_state == MLX5_QP_STATE_SQ_DRAINING;
+
+ qp_attr->max_rd_atomic = 1 << ((be32_to_cpu(context->params1) >> 21) & 0x7);
+
+ qp_attr->max_dest_rd_atomic =
+ 1 << ((be32_to_cpu(context->params2) >> 21) & 0x7);
+ qp_attr->min_rnr_timer =
+ (be32_to_cpu(context->rnr_nextrecvpsn) >> 24) & 0x1f;
+ qp_attr->timeout = context->pri_path.ackto_lt >> 3;
+ qp_attr->retry_cnt = (be32_to_cpu(context->params1) >> 16) & 0x7;
+ qp_attr->rnr_retry = (be32_to_cpu(context->params1) >> 13) & 0x7;
+ qp_attr->alt_timeout = context->alt_path.ackto_lt >> 3;
+ qp_attr->cur_qp_state = qp_attr->qp_state;
+ qp_attr->cap.max_recv_wr = qp->rq.wqe_cnt;
+ qp_attr->cap.max_recv_sge = qp->rq.max_gs;
+
+ if (!ibqp->uobject) {
+ qp_attr->cap.max_send_wr = qp->sq.wqe_cnt;
+ qp_attr->cap.max_send_sge = qp->sq.max_gs;
+ } else {
+ qp_attr->cap.max_send_wr = 0;
+ qp_attr->cap.max_send_sge = 0;
+ }
+
+ /* We don't support inline sends for kernel QPs (yet), and we
+ * don't know what userspace's value should be.
+ */
+ qp_attr->cap.max_inline_data = 0;
+
+ qp_init_attr->cap = qp_attr->cap;
+
+ qp_init_attr->create_flags = 0;
+ if (qp->flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK)
+ qp_init_attr->create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK;
+
+ qp_init_attr->sq_sig_type = qp->sq_signal_bits & MLX5_WQE_CTRL_CQ_UPDATE ?
+ IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR;
+
+out_free:
+ kfree(outb);
+
+out:
+ mutex_unlock(&qp->mutex);
+ return err;
+}
+
+struct ib_xrcd *mlx5_ib_alloc_xrcd(struct ib_device *ibdev,
+ struct ib_ucontext *context,
+ struct ib_udata *udata)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibdev);
+ struct mlx5_ib_xrcd *xrcd;
+ int err;
+
+ if (!(dev->mdev.caps.flags & MLX5_DEV_CAP_FLAG_XRC))
+ return ERR_PTR(-ENOSYS);
+
+ xrcd = kmalloc(sizeof(*xrcd), GFP_KERNEL);
+ if (!xrcd)
+ return ERR_PTR(-ENOMEM);
+
+ err = mlx5_core_xrcd_alloc(&dev->mdev, &xrcd->xrcdn);
+ if (err) {
+ kfree(xrcd);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ return &xrcd->ibxrcd;
+}
+
+int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
+{
+ struct mlx5_ib_dev *dev = to_mdev(xrcd->device);
+ u32 xrcdn = to_mxrcd(xrcd)->xrcdn;
+ int err;
+
+ err = mlx5_core_xrcd_dealloc(&dev->mdev, xrcdn);
+ if (err) {
+ mlx5_ib_warn(dev, "failed to dealloc xrcdn 0x%x\n", xrcdn);
+ return err;
+ }
+
+ kfree(xrcd);
+
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/module.h>
+#include <linux/mlx5/qp.h>
+#include <linux/mlx5/srq.h>
+#include <linux/slab.h>
+#include <rdma/ib_umem.h>
+
+#include "mlx5_ib.h"
+#include "user.h"
+
+/* not supported currently */
+static int srq_signature;
+
+static void *get_wqe(struct mlx5_ib_srq *srq, int n)
+{
+ return mlx5_buf_offset(&srq->buf, n << srq->msrq.wqe_shift);
+}
+
+static void mlx5_ib_srq_event(struct mlx5_core_srq *srq, enum mlx5_event type)
+{
+ struct ib_event event;
+ struct ib_srq *ibsrq = &to_mibsrq(srq)->ibsrq;
+
+ if (ibsrq->event_handler) {
+ event.device = ibsrq->device;
+ event.element.srq = ibsrq;
+ switch (type) {
+ case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT:
+ event.event = IB_EVENT_SRQ_LIMIT_REACHED;
+ break;
+ case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR:
+ event.event = IB_EVENT_SRQ_ERR;
+ break;
+ default:
+ pr_warn("mlx5_ib: Unexpected event type %d on SRQ %06x\n",
+ type, srq->srqn);
+ return;
+ }
+
+ ibsrq->event_handler(&event, ibsrq->srq_context);
+ }
+}
+
+static int create_srq_user(struct ib_pd *pd, struct mlx5_ib_srq *srq,
+ struct mlx5_create_srq_mbox_in **in,
+ struct ib_udata *udata, int buf_size, int *inlen)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ struct mlx5_ib_create_srq ucmd;
+ int err;
+ int npages;
+ int page_shift;
+ int ncont;
+ u32 offset;
+
+ if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
+ mlx5_ib_dbg(dev, "failed copy udata\n");
+ return -EFAULT;
+ }
+ srq->wq_sig = !!(ucmd.flags & MLX5_SRQ_FLAG_SIGNATURE);
+
+ srq->umem = ib_umem_get(pd->uobject->context, ucmd.buf_addr, buf_size,
+ 0, 0);
+ if (IS_ERR(srq->umem)) {
+ mlx5_ib_dbg(dev, "failed umem get, size %d\n", buf_size);
+ err = PTR_ERR(srq->umem);
+ return err;
+ }
+
+ mlx5_ib_cont_pages(srq->umem, ucmd.buf_addr, &npages,
+ &page_shift, &ncont, NULL);
+ err = mlx5_ib_get_buf_offset(ucmd.buf_addr, page_shift,
+ &offset);
+ if (err) {
+ mlx5_ib_warn(dev, "bad offset\n");
+ goto err_umem;
+ }
+
+ *inlen = sizeof(**in) + sizeof(*(*in)->pas) * ncont;
+ *in = mlx5_vzalloc(*inlen);
+ if (!(*in)) {
+ err = -ENOMEM;
+ goto err_umem;
+ }
+
+ mlx5_ib_populate_pas(dev, srq->umem, page_shift, (*in)->pas, 0);
+
+ err = mlx5_ib_db_map_user(to_mucontext(pd->uobject->context),
+ ucmd.db_addr, &srq->db);
+ if (err) {
+ mlx5_ib_dbg(dev, "map doorbell failed\n");
+ goto err_in;
+ }
+
+ (*in)->ctx.log_pg_sz = page_shift - PAGE_SHIFT;
+ (*in)->ctx.pgoff_cqn = cpu_to_be32(offset << 26);
+
+ return 0;
+
+err_in:
+ mlx5_vfree(*in);
+
+err_umem:
+ ib_umem_release(srq->umem);
+
+ return err;
+}
+
+static int create_srq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_srq *srq,
+ struct mlx5_create_srq_mbox_in **in, int buf_size,
+ int *inlen)
+{
+ int err;
+ int i;
+ struct mlx5_wqe_srq_next_seg *next;
+ int page_shift;
+ int npages;
+
+ err = mlx5_db_alloc(&dev->mdev, &srq->db);
+ if (err) {
+ mlx5_ib_warn(dev, "alloc dbell rec failed\n");
+ return err;
+ }
+
+ *srq->db.db = 0;
+
+ if (mlx5_buf_alloc(&dev->mdev, buf_size, PAGE_SIZE * 2, &srq->buf)) {
+ mlx5_ib_dbg(dev, "buf alloc failed\n");
+ err = -ENOMEM;
+ goto err_db;
+ }
+ page_shift = srq->buf.page_shift;
+
+ srq->head = 0;
+ srq->tail = srq->msrq.max - 1;
+ srq->wqe_ctr = 0;
+
+ for (i = 0; i < srq->msrq.max; i++) {
+ next = get_wqe(srq, i);
+ next->next_wqe_index =
+ cpu_to_be16((i + 1) & (srq->msrq.max - 1));
+ }
+
+ npages = DIV_ROUND_UP(srq->buf.npages, 1 << (page_shift - PAGE_SHIFT));
+ mlx5_ib_dbg(dev, "buf_size %d, page_shift %d, npages %d, calc npages %d\n",
+ buf_size, page_shift, srq->buf.npages, npages);
+ *inlen = sizeof(**in) + sizeof(*(*in)->pas) * npages;
+ *in = mlx5_vzalloc(*inlen);
+ if (!*in) {
+ err = -ENOMEM;
+ goto err_buf;
+ }
+ mlx5_fill_page_array(&srq->buf, (*in)->pas);
+
+ srq->wrid = kmalloc(srq->msrq.max * sizeof(u64), GFP_KERNEL);
+ if (!srq->wrid) {
+ mlx5_ib_dbg(dev, "kmalloc failed %lu\n",
+ (unsigned long)(srq->msrq.max * sizeof(u64)));
+ err = -ENOMEM;
+ goto err_in;
+ }
+ srq->wq_sig = !!srq_signature;
+
+ (*in)->ctx.log_pg_sz = page_shift - PAGE_SHIFT;
+
+ return 0;
+
+err_in:
+ mlx5_vfree(*in);
+
+err_buf:
+ mlx5_buf_free(&dev->mdev, &srq->buf);
+
+err_db:
+ mlx5_db_free(&dev->mdev, &srq->db);
+ return err;
+}
+
+static void destroy_srq_user(struct ib_pd *pd, struct mlx5_ib_srq *srq)
+{
+ mlx5_ib_db_unmap_user(to_mucontext(pd->uobject->context), &srq->db);
+ ib_umem_release(srq->umem);
+}
+
+
+static void destroy_srq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_srq *srq)
+{
+ kfree(srq->wrid);
+ mlx5_buf_free(&dev->mdev, &srq->buf);
+ mlx5_db_free(&dev->mdev, &srq->db);
+}
+
+struct ib_srq *mlx5_ib_create_srq(struct ib_pd *pd,
+ struct ib_srq_init_attr *init_attr,
+ struct ib_udata *udata)
+{
+ struct mlx5_ib_dev *dev = to_mdev(pd->device);
+ struct mlx5_ib_srq *srq;
+ int desc_size;
+ int buf_size;
+ int err;
+ struct mlx5_create_srq_mbox_in *uninitialized_var(in);
+ int uninitialized_var(inlen);
+ int is_xrc;
+ u32 flgs, xrcdn;
+
+ /* Sanity check SRQ size before proceeding */
+ if (init_attr->attr.max_wr >= dev->mdev.caps.max_srq_wqes) {
+ mlx5_ib_dbg(dev, "max_wr %d, cap %d\n",
+ init_attr->attr.max_wr,
+ dev->mdev.caps.max_srq_wqes);
+ return ERR_PTR(-EINVAL);
+ }
+
+ srq = kmalloc(sizeof(*srq), GFP_KERNEL);
+ if (!srq)
+ return ERR_PTR(-ENOMEM);
+
+ mutex_init(&srq->mutex);
+ spin_lock_init(&srq->lock);
+ srq->msrq.max = roundup_pow_of_two(init_attr->attr.max_wr + 1);
+ srq->msrq.max_gs = init_attr->attr.max_sge;
+
+ desc_size = sizeof(struct mlx5_wqe_srq_next_seg) +
+ srq->msrq.max_gs * sizeof(struct mlx5_wqe_data_seg);
+ desc_size = roundup_pow_of_two(desc_size);
+ desc_size = max_t(int, 32, desc_size);
+ srq->msrq.max_avail_gather = (desc_size - sizeof(struct mlx5_wqe_srq_next_seg)) /
+ sizeof(struct mlx5_wqe_data_seg);
+ srq->msrq.wqe_shift = ilog2(desc_size);
+ buf_size = srq->msrq.max * desc_size;
+ mlx5_ib_dbg(dev, "desc_size 0x%x, req wr 0x%x, srq size 0x%x, max_gs 0x%x, max_avail_gather 0x%x\n",
+ desc_size, init_attr->attr.max_wr, srq->msrq.max, srq->msrq.max_gs,
+ srq->msrq.max_avail_gather);
+
+ if (pd->uobject)
+ err = create_srq_user(pd, srq, &in, udata, buf_size, &inlen);
+ else
+ err = create_srq_kernel(dev, srq, &in, buf_size, &inlen);
+
+ if (err) {
+ mlx5_ib_warn(dev, "create srq %s failed, err %d\n",
+ pd->uobject ? "user" : "kernel", err);
+ goto err_srq;
+ }
+
+ is_xrc = (init_attr->srq_type == IB_SRQT_XRC);
+ in->ctx.state_log_sz = ilog2(srq->msrq.max);
+ flgs = ((srq->msrq.wqe_shift - 4) | (is_xrc << 5) | (srq->wq_sig << 7)) << 24;
+ xrcdn = 0;
+ if (is_xrc) {
+ xrcdn = to_mxrcd(init_attr->ext.xrc.xrcd)->xrcdn;
+ in->ctx.pgoff_cqn |= cpu_to_be32(to_mcq(init_attr->ext.xrc.cq)->mcq.cqn);
+ } else if (init_attr->srq_type == IB_SRQT_BASIC) {
+ xrcdn = to_mxrcd(dev->devr.x0)->xrcdn;
+ in->ctx.pgoff_cqn |= cpu_to_be32(to_mcq(dev->devr.c0)->mcq.cqn);
+ }
+
+ in->ctx.flags_xrcd = cpu_to_be32((flgs & 0xFF000000) | (xrcdn & 0xFFFFFF));
+
+ in->ctx.pd = cpu_to_be32(to_mpd(pd)->pdn);
+ in->ctx.db_record = cpu_to_be64(srq->db.dma);
+ err = mlx5_core_create_srq(&dev->mdev, &srq->msrq, in, inlen);
+ mlx5_vfree(in);
+ if (err) {
+ mlx5_ib_dbg(dev, "create SRQ failed, err %d\n", err);
+ goto err_srq;
+ }
+
+ mlx5_ib_dbg(dev, "create SRQ with srqn 0x%x\n", srq->msrq.srqn);
+
+ srq->msrq.event = mlx5_ib_srq_event;
+ srq->ibsrq.ext.xrc.srq_num = srq->msrq.srqn;
+
+ if (pd->uobject)
+ if (ib_copy_to_udata(udata, &srq->msrq.srqn, sizeof(__u32))) {
+ mlx5_ib_dbg(dev, "copy to user failed\n");
+ err = -EFAULT;
+ goto err_core;
+ }
+
+ init_attr->attr.max_wr = srq->msrq.max - 1;
+
+ return &srq->ibsrq;
+
+err_core:
+ mlx5_core_destroy_srq(&dev->mdev, &srq->msrq);
+ if (pd->uobject)
+ destroy_srq_user(pd, srq);
+ else
+ destroy_srq_kernel(dev, srq);
+
+err_srq:
+ kfree(srq);
+
+ return ERR_PTR(err);
+}
+
+int mlx5_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
+ enum ib_srq_attr_mask attr_mask, struct ib_udata *udata)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibsrq->device);
+ struct mlx5_ib_srq *srq = to_msrq(ibsrq);
+ int ret;
+
+ /* We don't support resizing SRQs yet */
+ if (attr_mask & IB_SRQ_MAX_WR)
+ return -EINVAL;
+
+ if (attr_mask & IB_SRQ_LIMIT) {
+ if (attr->srq_limit >= srq->msrq.max)
+ return -EINVAL;
+
+ mutex_lock(&srq->mutex);
+ ret = mlx5_core_arm_srq(&dev->mdev, &srq->msrq, attr->srq_limit, 1);
+ mutex_unlock(&srq->mutex);
+
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+int mlx5_ib_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr)
+{
+ struct mlx5_ib_dev *dev = to_mdev(ibsrq->device);
+ struct mlx5_ib_srq *srq = to_msrq(ibsrq);
+ int ret;
+ struct mlx5_query_srq_mbox_out *out;
+
+ out = kzalloc(sizeof(*out), GFP_KERNEL);
+ if (!out)
+ return -ENOMEM;
+
+ ret = mlx5_core_query_srq(&dev->mdev, &srq->msrq, out);
+ if (ret)
+ goto out_box;
+
+ srq_attr->srq_limit = be16_to_cpu(out->ctx.lwm);
+ srq_attr->max_wr = srq->msrq.max - 1;
+ srq_attr->max_sge = srq->msrq.max_gs;
+
+out_box:
+ kfree(out);
+ return ret;
+}
+
+int mlx5_ib_destroy_srq(struct ib_srq *srq)
+{
+ struct mlx5_ib_dev *dev = to_mdev(srq->device);
+ struct mlx5_ib_srq *msrq = to_msrq(srq);
+
+ mlx5_core_destroy_srq(&dev->mdev, &msrq->msrq);
+
+ if (srq->uobject) {
+ mlx5_ib_db_unmap_user(to_mucontext(srq->uobject->context), &msrq->db);
+ ib_umem_release(msrq->umem);
+ } else {
+ kfree(msrq->wrid);
+ mlx5_buf_free(&dev->mdev, &msrq->buf);
+ mlx5_db_free(&dev->mdev, &msrq->db);
+ }
+
+ kfree(srq);
+ return 0;
+}
+
+void mlx5_ib_free_srq_wqe(struct mlx5_ib_srq *srq, int wqe_index)
+{
+ struct mlx5_wqe_srq_next_seg *next;
+
+ /* always called with interrupts disabled. */
+ spin_lock(&srq->lock);
+
+ next = get_wqe(srq, srq->tail);
+ next->next_wqe_index = cpu_to_be16(wqe_index);
+ srq->tail = wqe_index;
+
+ spin_unlock(&srq->lock);
+}
+
+int mlx5_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
+ struct ib_recv_wr **bad_wr)
+{
+ struct mlx5_ib_srq *srq = to_msrq(ibsrq);
+ struct mlx5_wqe_srq_next_seg *next;
+ struct mlx5_wqe_data_seg *scat;
+ unsigned long flags;
+ int err = 0;
+ int nreq;
+ int i;
+
+ spin_lock_irqsave(&srq->lock, flags);
+
+ for (nreq = 0; wr; nreq++, wr = wr->next) {
+ if (unlikely(wr->num_sge > srq->msrq.max_gs)) {
+ err = -EINVAL;
+ *bad_wr = wr;
+ break;
+ }
+
+ if (unlikely(srq->head == srq->tail)) {
+ err = -ENOMEM;
+ *bad_wr = wr;
+ break;
+ }
+
+ srq->wrid[srq->head] = wr->wr_id;
+
+ next = get_wqe(srq, srq->head);
+ srq->head = be16_to_cpu(next->next_wqe_index);
+ scat = (struct mlx5_wqe_data_seg *)(next + 1);
+
+ for (i = 0; i < wr->num_sge; i++) {
+ scat[i].byte_count = cpu_to_be32(wr->sg_list[i].length);
+ scat[i].lkey = cpu_to_be32(wr->sg_list[i].lkey);
+ scat[i].addr = cpu_to_be64(wr->sg_list[i].addr);
+ }
+
+ if (i < srq->msrq.max_avail_gather) {
+ scat[i].byte_count = 0;
+ scat[i].lkey = cpu_to_be32(MLX5_INVALID_LKEY);
+ scat[i].addr = 0;
+ }
+ }
+
+ if (likely(nreq)) {
+ srq->wqe_ctr += nreq;
+
+ /* Make sure that descriptors are written before
+ * doorbell record.
+ */
+ wmb();
+
+ *srq->db.db = cpu_to_be32(srq->wqe_ctr);
+ }
+
+ spin_unlock_irqrestore(&srq->lock, flags);
+
+ return err;
+}
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef MLX5_IB_USER_H
+#define MLX5_IB_USER_H
+
+#include <linux/types.h>
+
+enum {
+ MLX5_QP_FLAG_SIGNATURE = 1 << 0,
+ MLX5_QP_FLAG_SCATTER_CQE = 1 << 1,
+};
+
+enum {
+ MLX5_SRQ_FLAG_SIGNATURE = 1 << 0,
+};
+
+
+/* Increment this value if any changes that break userspace ABI
+ * compatibility are made.
+ */
+#define MLX5_IB_UVERBS_ABI_VERSION 1
+
+/* Make sure that all structs defined in this file remain laid out so
+ * that they pack the same way on 32-bit and 64-bit architectures (to
+ * avoid incompatibility between 32-bit userspace and 64-bit kernels).
+ * In particular do not use pointer types -- pass pointers in __u64
+ * instead.
+ */
+
+struct mlx5_ib_alloc_ucontext_req {
+ __u32 total_num_uuars;
+ __u32 num_low_latency_uuars;
+};
+
+struct mlx5_ib_alloc_ucontext_resp {
+ __u32 qp_tab_size;
+ __u32 bf_reg_size;
+ __u32 tot_uuars;
+ __u32 cache_line_size;
+ __u16 max_sq_desc_sz;
+ __u16 max_rq_desc_sz;
+ __u32 max_send_wqebb;
+ __u32 max_recv_wr;
+ __u32 max_srq_recv_wr;
+ __u16 num_ports;
+ __u16 reserved;
+};
+
+struct mlx5_ib_alloc_pd_resp {
+ __u32 pdn;
+};
+
+struct mlx5_ib_create_cq {
+ __u64 buf_addr;
+ __u64 db_addr;
+ __u32 cqe_size;
+};
+
+struct mlx5_ib_create_cq_resp {
+ __u32 cqn;
+ __u32 reserved;
+};
+
+struct mlx5_ib_resize_cq {
+ __u64 buf_addr;
+};
+
+struct mlx5_ib_create_srq {
+ __u64 buf_addr;
+ __u64 db_addr;
+ __u32 flags;
+};
+
+struct mlx5_ib_create_srq_resp {
+ __u32 srqn;
+ __u32 reserved;
+};
+
+struct mlx5_ib_create_qp {
+ __u64 buf_addr;
+ __u64 db_addr;
+ __u32 sq_wqe_count;
+ __u32 rq_wqe_count;
+ __u32 rq_wqe_shift;
+ __u32 flags;
+};
+
+struct mlx5_ib_create_qp_resp {
+ __u32 uuar_index;
+};
+#endif /* MLX5_IB_USER_H */
if NET_VENDOR_MELLANOX
source "drivers/net/ethernet/mellanox/mlx4/Kconfig"
+source "drivers/net/ethernet/mellanox/mlx5/core/Kconfig"
endif # NET_VENDOR_MELLANOX
#
obj-$(CONFIG_MLX4_CORE) += mlx4/
+obj-$(CONFIG_MLX5_CORE) += mlx5/core/
--- /dev/null
+#
+# Mellanox driver configuration
+#
+
+config MLX5_CORE
+ tristate
+ depends on PCI && X86
+ default n
+
+config MLX5_DEBUG
+ bool "Verbose debugging output" if (MLX5_CORE && EXPERT)
+ depends on MLX5_CORE
+ default y
+ ---help---
+ This option causes debugging code to be compiled into the
+ mlx5_core driver. The output can be turned on via the
+ debug_mask module parameter (which can also be set after
+ the driver is loaded through sysfs).
--- /dev/null
+obj-$(CONFIG_MLX5_CORE) += mlx5_core.o
+
+mlx5_core-y := main.o cmd.o debugfs.o fw.o eq.o uar.o pagealloc.o \
+ health.o mcg.o cq.o srq.o alloc.o qp.o port.o mr.o pd.o \
+ mad.o
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/export.h>
+#include <linux/bitmap.h>
+#include <linux/dma-mapping.h>
+#include <linux/vmalloc.h>
+#include <linux/mlx5/driver.h>
+
+#include "mlx5_core.h"
+
+/* Handling for queue buffers -- we allocate a bunch of memory and
+ * register it in a memory region at HCA virtual address 0. If the
+ * requested size is > max_direct, we split the allocation into
+ * multiple pages, so we don't require too much contiguous memory.
+ */
+
+int mlx5_buf_alloc(struct mlx5_core_dev *dev, int size, int max_direct,
+ struct mlx5_buf *buf)
+{
+ dma_addr_t t;
+
+ buf->size = size;
+ if (size <= max_direct) {
+ buf->nbufs = 1;
+ buf->npages = 1;
+ buf->page_shift = get_order(size) + PAGE_SHIFT;
+ buf->direct.buf = dma_zalloc_coherent(&dev->pdev->dev,
+ size, &t, GFP_KERNEL);
+ if (!buf->direct.buf)
+ return -ENOMEM;
+
+ buf->direct.map = t;
+
+ while (t & ((1 << buf->page_shift) - 1)) {
+ --buf->page_shift;
+ buf->npages *= 2;
+ }
+ } else {
+ int i;
+
+ buf->direct.buf = NULL;
+ buf->nbufs = (size + PAGE_SIZE - 1) / PAGE_SIZE;
+ buf->npages = buf->nbufs;
+ buf->page_shift = PAGE_SHIFT;
+ buf->page_list = kcalloc(buf->nbufs, sizeof(*buf->page_list),
+ GFP_KERNEL);
+ if (!buf->page_list)
+ return -ENOMEM;
+
+ for (i = 0; i < buf->nbufs; i++) {
+ buf->page_list[i].buf =
+ dma_zalloc_coherent(&dev->pdev->dev, PAGE_SIZE,
+ &t, GFP_KERNEL);
+ if (!buf->page_list[i].buf)
+ goto err_free;
+
+ buf->page_list[i].map = t;
+ }
+
+ if (BITS_PER_LONG == 64) {
+ struct page **pages;
+ pages = kmalloc(sizeof(*pages) * buf->nbufs, GFP_KERNEL);
+ if (!pages)
+ goto err_free;
+ for (i = 0; i < buf->nbufs; i++)
+ pages[i] = virt_to_page(buf->page_list[i].buf);
+ buf->direct.buf = vmap(pages, buf->nbufs, VM_MAP, PAGE_KERNEL);
+ kfree(pages);
+ if (!buf->direct.buf)
+ goto err_free;
+ }
+ }
+
+ return 0;
+
+err_free:
+ mlx5_buf_free(dev, buf);
+
+ return -ENOMEM;
+}
+EXPORT_SYMBOL_GPL(mlx5_buf_alloc);
+
+void mlx5_buf_free(struct mlx5_core_dev *dev, struct mlx5_buf *buf)
+{
+ int i;
+
+ if (buf->nbufs == 1)
+ dma_free_coherent(&dev->pdev->dev, buf->size, buf->direct.buf,
+ buf->direct.map);
+ else {
+ if (BITS_PER_LONG == 64 && buf->direct.buf)
+ vunmap(buf->direct.buf);
+
+ for (i = 0; i < buf->nbufs; i++)
+ if (buf->page_list[i].buf)
+ dma_free_coherent(&dev->pdev->dev, PAGE_SIZE,
+ buf->page_list[i].buf,
+ buf->page_list[i].map);
+ kfree(buf->page_list);
+ }
+}
+EXPORT_SYMBOL_GPL(mlx5_buf_free);
+
+static struct mlx5_db_pgdir *mlx5_alloc_db_pgdir(struct device *dma_device)
+{
+ struct mlx5_db_pgdir *pgdir;
+
+ pgdir = kzalloc(sizeof(*pgdir), GFP_KERNEL);
+ if (!pgdir)
+ return NULL;
+
+ bitmap_fill(pgdir->bitmap, MLX5_DB_PER_PAGE);
+ pgdir->db_page = dma_alloc_coherent(dma_device, PAGE_SIZE,
+ &pgdir->db_dma, GFP_KERNEL);
+ if (!pgdir->db_page) {
+ kfree(pgdir);
+ return NULL;
+ }
+
+ return pgdir;
+}
+
+static int mlx5_alloc_db_from_pgdir(struct mlx5_db_pgdir *pgdir,
+ struct mlx5_db *db)
+{
+ int offset;
+ int i;
+
+ i = find_first_bit(pgdir->bitmap, MLX5_DB_PER_PAGE);
+ if (i >= MLX5_DB_PER_PAGE)
+ return -ENOMEM;
+
+ __clear_bit(i, pgdir->bitmap);
+
+ db->u.pgdir = pgdir;
+ db->index = i;
+ offset = db->index * L1_CACHE_BYTES;
+ db->db = pgdir->db_page + offset / sizeof(*pgdir->db_page);
+ db->dma = pgdir->db_dma + offset;
+
+ return 0;
+}
+
+int mlx5_db_alloc(struct mlx5_core_dev *dev, struct mlx5_db *db)
+{
+ struct mlx5_db_pgdir *pgdir;
+ int ret = 0;
+
+ mutex_lock(&dev->priv.pgdir_mutex);
+
+ list_for_each_entry(pgdir, &dev->priv.pgdir_list, list)
+ if (!mlx5_alloc_db_from_pgdir(pgdir, db))
+ goto out;
+
+ pgdir = mlx5_alloc_db_pgdir(&(dev->pdev->dev));
+ if (!pgdir) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ list_add(&pgdir->list, &dev->priv.pgdir_list);
+
+ /* This should never fail -- we just allocated an empty page: */
+ WARN_ON(mlx5_alloc_db_from_pgdir(pgdir, db));
+
+out:
+ mutex_unlock(&dev->priv.pgdir_mutex);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(mlx5_db_alloc);
+
+void mlx5_db_free(struct mlx5_core_dev *dev, struct mlx5_db *db)
+{
+ mutex_lock(&dev->priv.pgdir_mutex);
+
+ __set_bit(db->index, db->u.pgdir->bitmap);
+
+ if (bitmap_full(db->u.pgdir->bitmap, MLX5_DB_PER_PAGE)) {
+ dma_free_coherent(&(dev->pdev->dev), PAGE_SIZE,
+ db->u.pgdir->db_page, db->u.pgdir->db_dma);
+ list_del(&db->u.pgdir->list);
+ kfree(db->u.pgdir);
+ }
+
+ mutex_unlock(&dev->priv.pgdir_mutex);
+}
+EXPORT_SYMBOL_GPL(mlx5_db_free);
+
+
+void mlx5_fill_page_array(struct mlx5_buf *buf, __be64 *pas)
+{
+ u64 addr;
+ int i;
+
+ for (i = 0; i < buf->npages; i++) {
+ if (buf->nbufs == 1)
+ addr = buf->direct.map + (i << buf->page_shift);
+ else
+ addr = buf->page_list[i].map;
+
+ pas[i] = cpu_to_be64(addr);
+ }
+}
+EXPORT_SYMBOL_GPL(mlx5_fill_page_array);
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <asm-generic/kmap_types.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/random.h>
+#include <linux/io-mapping.h>
+#include <linux/mlx5/driver.h>
+#include <linux/debugfs.h>
+
+#include "mlx5_core.h"
+
+enum {
+ CMD_IF_REV = 3,
+};
+
+enum {
+ CMD_MODE_POLLING,
+ CMD_MODE_EVENTS
+};
+
+enum {
+ NUM_LONG_LISTS = 2,
+ NUM_MED_LISTS = 64,
+ LONG_LIST_SIZE = (2ULL * 1024 * 1024 * 1024 / PAGE_SIZE) * 8 + 16 +
+ MLX5_CMD_DATA_BLOCK_SIZE,
+ MED_LIST_SIZE = 16 + MLX5_CMD_DATA_BLOCK_SIZE,
+};
+
+enum {
+ MLX5_CMD_DELIVERY_STAT_OK = 0x0,
+ MLX5_CMD_DELIVERY_STAT_SIGNAT_ERR = 0x1,
+ MLX5_CMD_DELIVERY_STAT_TOK_ERR = 0x2,
+ MLX5_CMD_DELIVERY_STAT_BAD_BLK_NUM_ERR = 0x3,
+ MLX5_CMD_DELIVERY_STAT_OUT_PTR_ALIGN_ERR = 0x4,
+ MLX5_CMD_DELIVERY_STAT_IN_PTR_ALIGN_ERR = 0x5,
+ MLX5_CMD_DELIVERY_STAT_FW_ERR = 0x6,
+ MLX5_CMD_DELIVERY_STAT_IN_LENGTH_ERR = 0x7,
+ MLX5_CMD_DELIVERY_STAT_OUT_LENGTH_ERR = 0x8,
+ MLX5_CMD_DELIVERY_STAT_RES_FLD_NOT_CLR_ERR = 0x9,
+ MLX5_CMD_DELIVERY_STAT_CMD_DESCR_ERR = 0x10,
+};
+
+enum {
+ MLX5_CMD_STAT_OK = 0x0,
+ MLX5_CMD_STAT_INT_ERR = 0x1,
+ MLX5_CMD_STAT_BAD_OP_ERR = 0x2,
+ MLX5_CMD_STAT_BAD_PARAM_ERR = 0x3,
+ MLX5_CMD_STAT_BAD_SYS_STATE_ERR = 0x4,
+ MLX5_CMD_STAT_BAD_RES_ERR = 0x5,
+ MLX5_CMD_STAT_RES_BUSY = 0x6,
+ MLX5_CMD_STAT_LIM_ERR = 0x8,
+ MLX5_CMD_STAT_BAD_RES_STATE_ERR = 0x9,
+ MLX5_CMD_STAT_IX_ERR = 0xa,
+ MLX5_CMD_STAT_NO_RES_ERR = 0xf,
+ MLX5_CMD_STAT_BAD_INP_LEN_ERR = 0x50,
+ MLX5_CMD_STAT_BAD_OUTP_LEN_ERR = 0x51,
+ MLX5_CMD_STAT_BAD_QP_STATE_ERR = 0x10,
+ MLX5_CMD_STAT_BAD_PKT_ERR = 0x30,
+ MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR = 0x40,
+};
+
+static struct mlx5_cmd_work_ent *alloc_cmd(struct mlx5_cmd *cmd,
+ struct mlx5_cmd_msg *in,
+ struct mlx5_cmd_msg *out,
+ mlx5_cmd_cbk_t cbk,
+ void *context, int page_queue)
+{
+ gfp_t alloc_flags = cbk ? GFP_ATOMIC : GFP_KERNEL;
+ struct mlx5_cmd_work_ent *ent;
+
+ ent = kzalloc(sizeof(*ent), alloc_flags);
+ if (!ent)
+ return ERR_PTR(-ENOMEM);
+
+ ent->in = in;
+ ent->out = out;
+ ent->callback = cbk;
+ ent->context = context;
+ ent->cmd = cmd;
+ ent->page_queue = page_queue;
+
+ return ent;
+}
+
+static u8 alloc_token(struct mlx5_cmd *cmd)
+{
+ u8 token;
+
+ spin_lock(&cmd->token_lock);
+ token = cmd->token++ % 255 + 1;
+ spin_unlock(&cmd->token_lock);
+
+ return token;
+}
+
+static int alloc_ent(struct mlx5_cmd *cmd)
+{
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&cmd->alloc_lock, flags);
+ ret = find_first_bit(&cmd->bitmask, cmd->max_reg_cmds);
+ if (ret < cmd->max_reg_cmds)
+ clear_bit(ret, &cmd->bitmask);
+ spin_unlock_irqrestore(&cmd->alloc_lock, flags);
+
+ return ret < cmd->max_reg_cmds ? ret : -ENOMEM;
+}
+
+static void free_ent(struct mlx5_cmd *cmd, int idx)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&cmd->alloc_lock, flags);
+ set_bit(idx, &cmd->bitmask);
+ spin_unlock_irqrestore(&cmd->alloc_lock, flags);
+}
+
+static struct mlx5_cmd_layout *get_inst(struct mlx5_cmd *cmd, int idx)
+{
+ return cmd->cmd_buf + (idx << cmd->log_stride);
+}
+
+static u8 xor8_buf(void *buf, int len)
+{
+ u8 *ptr = buf;
+ u8 sum = 0;
+ int i;
+
+ for (i = 0; i < len; i++)
+ sum ^= ptr[i];
+
+ return sum;
+}
+
+static int verify_block_sig(struct mlx5_cmd_prot_block *block)
+{
+ if (xor8_buf(block->rsvd0, sizeof(*block) - sizeof(block->data) - 1) != 0xff)
+ return -EINVAL;
+
+ if (xor8_buf(block, sizeof(*block)) != 0xff)
+ return -EINVAL;
+
+ return 0;
+}
+
+static void calc_block_sig(struct mlx5_cmd_prot_block *block, u8 token)
+{
+ block->token = token;
+ block->ctrl_sig = ~xor8_buf(block->rsvd0, sizeof(*block) - sizeof(block->data) - 2);
+ block->sig = ~xor8_buf(block, sizeof(*block) - 1);
+}
+
+static void calc_chain_sig(struct mlx5_cmd_msg *msg, u8 token)
+{
+ struct mlx5_cmd_mailbox *next = msg->next;
+
+ while (next) {
+ calc_block_sig(next->buf, token);
+ next = next->next;
+ }
+}
+
+static void set_signature(struct mlx5_cmd_work_ent *ent)
+{
+ ent->lay->sig = ~xor8_buf(ent->lay, sizeof(*ent->lay));
+ calc_chain_sig(ent->in, ent->token);
+ calc_chain_sig(ent->out, ent->token);
+}
+
+static void poll_timeout(struct mlx5_cmd_work_ent *ent)
+{
+ unsigned long poll_end = jiffies + msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC + 1000);
+ u8 own;
+
+ do {
+ own = ent->lay->status_own;
+ if (!(own & CMD_OWNER_HW)) {
+ ent->ret = 0;
+ return;
+ }
+ usleep_range(5000, 10000);
+ } while (time_before(jiffies, poll_end));
+
+ ent->ret = -ETIMEDOUT;
+}
+
+static void free_cmd(struct mlx5_cmd_work_ent *ent)
+{
+ kfree(ent);
+}
+
+
+static int verify_signature(struct mlx5_cmd_work_ent *ent)
+{
+ struct mlx5_cmd_mailbox *next = ent->out->next;
+ int err;
+ u8 sig;
+
+ sig = xor8_buf(ent->lay, sizeof(*ent->lay));
+ if (sig != 0xff)
+ return -EINVAL;
+
+ while (next) {
+ err = verify_block_sig(next->buf);
+ if (err)
+ return err;
+
+ next = next->next;
+ }
+
+ return 0;
+}
+
+static void dump_buf(void *buf, int size, int data_only, int offset)
+{
+ __be32 *p = buf;
+ int i;
+
+ for (i = 0; i < size; i += 16) {
+ pr_debug("%03x: %08x %08x %08x %08x\n", offset, be32_to_cpu(p[0]),
+ be32_to_cpu(p[1]), be32_to_cpu(p[2]),
+ be32_to_cpu(p[3]));
+ p += 4;
+ offset += 16;
+ }
+ if (!data_only)
+ pr_debug("\n");
+}
+
+const char *mlx5_command_str(int command)
+{
+ switch (command) {
+ case MLX5_CMD_OP_QUERY_HCA_CAP:
+ return "QUERY_HCA_CAP";
+
+ case MLX5_CMD_OP_SET_HCA_CAP:
+ return "SET_HCA_CAP";
+
+ case MLX5_CMD_OP_QUERY_ADAPTER:
+ return "QUERY_ADAPTER";
+
+ case MLX5_CMD_OP_INIT_HCA:
+ return "INIT_HCA";
+
+ case MLX5_CMD_OP_TEARDOWN_HCA:
+ return "TEARDOWN_HCA";
+
+ case MLX5_CMD_OP_QUERY_PAGES:
+ return "QUERY_PAGES";
+
+ case MLX5_CMD_OP_MANAGE_PAGES:
+ return "MANAGE_PAGES";
+
+ case MLX5_CMD_OP_CREATE_MKEY:
+ return "CREATE_MKEY";
+
+ case MLX5_CMD_OP_QUERY_MKEY:
+ return "QUERY_MKEY";
+
+ case MLX5_CMD_OP_DESTROY_MKEY:
+ return "DESTROY_MKEY";
+
+ case MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS:
+ return "QUERY_SPECIAL_CONTEXTS";
+
+ case MLX5_CMD_OP_CREATE_EQ:
+ return "CREATE_EQ";
+
+ case MLX5_CMD_OP_DESTROY_EQ:
+ return "DESTROY_EQ";
+
+ case MLX5_CMD_OP_QUERY_EQ:
+ return "QUERY_EQ";
+
+ case MLX5_CMD_OP_CREATE_CQ:
+ return "CREATE_CQ";
+
+ case MLX5_CMD_OP_DESTROY_CQ:
+ return "DESTROY_CQ";
+
+ case MLX5_CMD_OP_QUERY_CQ:
+ return "QUERY_CQ";
+
+ case MLX5_CMD_OP_MODIFY_CQ:
+ return "MODIFY_CQ";
+
+ case MLX5_CMD_OP_CREATE_QP:
+ return "CREATE_QP";
+
+ case MLX5_CMD_OP_DESTROY_QP:
+ return "DESTROY_QP";
+
+ case MLX5_CMD_OP_RST2INIT_QP:
+ return "RST2INIT_QP";
+
+ case MLX5_CMD_OP_INIT2RTR_QP:
+ return "INIT2RTR_QP";
+
+ case MLX5_CMD_OP_RTR2RTS_QP:
+ return "RTR2RTS_QP";
+
+ case MLX5_CMD_OP_RTS2RTS_QP:
+ return "RTS2RTS_QP";
+
+ case MLX5_CMD_OP_SQERR2RTS_QP:
+ return "SQERR2RTS_QP";
+
+ case MLX5_CMD_OP_2ERR_QP:
+ return "2ERR_QP";
+
+ case MLX5_CMD_OP_RTS2SQD_QP:
+ return "RTS2SQD_QP";
+
+ case MLX5_CMD_OP_SQD2RTS_QP:
+ return "SQD2RTS_QP";
+
+ case MLX5_CMD_OP_2RST_QP:
+ return "2RST_QP";
+
+ case MLX5_CMD_OP_QUERY_QP:
+ return "QUERY_QP";
+
+ case MLX5_CMD_OP_CONF_SQP:
+ return "CONF_SQP";
+
+ case MLX5_CMD_OP_MAD_IFC:
+ return "MAD_IFC";
+
+ case MLX5_CMD_OP_INIT2INIT_QP:
+ return "INIT2INIT_QP";
+
+ case MLX5_CMD_OP_SUSPEND_QP:
+ return "SUSPEND_QP";
+
+ case MLX5_CMD_OP_UNSUSPEND_QP:
+ return "UNSUSPEND_QP";
+
+ case MLX5_CMD_OP_SQD2SQD_QP:
+ return "SQD2SQD_QP";
+
+ case MLX5_CMD_OP_ALLOC_QP_COUNTER_SET:
+ return "ALLOC_QP_COUNTER_SET";
+
+ case MLX5_CMD_OP_DEALLOC_QP_COUNTER_SET:
+ return "DEALLOC_QP_COUNTER_SET";
+
+ case MLX5_CMD_OP_QUERY_QP_COUNTER_SET:
+ return "QUERY_QP_COUNTER_SET";
+
+ case MLX5_CMD_OP_CREATE_PSV:
+ return "CREATE_PSV";
+
+ case MLX5_CMD_OP_DESTROY_PSV:
+ return "DESTROY_PSV";
+
+ case MLX5_CMD_OP_QUERY_PSV:
+ return "QUERY_PSV";
+
+ case MLX5_CMD_OP_QUERY_SIG_RULE_TABLE:
+ return "QUERY_SIG_RULE_TABLE";
+
+ case MLX5_CMD_OP_QUERY_BLOCK_SIZE_TABLE:
+ return "QUERY_BLOCK_SIZE_TABLE";
+
+ case MLX5_CMD_OP_CREATE_SRQ:
+ return "CREATE_SRQ";
+
+ case MLX5_CMD_OP_DESTROY_SRQ:
+ return "DESTROY_SRQ";
+
+ case MLX5_CMD_OP_QUERY_SRQ:
+ return "QUERY_SRQ";
+
+ case MLX5_CMD_OP_ARM_RQ:
+ return "ARM_RQ";
+
+ case MLX5_CMD_OP_RESIZE_SRQ:
+ return "RESIZE_SRQ";
+
+ case MLX5_CMD_OP_ALLOC_PD:
+ return "ALLOC_PD";
+
+ case MLX5_CMD_OP_DEALLOC_PD:
+ return "DEALLOC_PD";
+
+ case MLX5_CMD_OP_ALLOC_UAR:
+ return "ALLOC_UAR";
+
+ case MLX5_CMD_OP_DEALLOC_UAR:
+ return "DEALLOC_UAR";
+
+ case MLX5_CMD_OP_ATTACH_TO_MCG:
+ return "ATTACH_TO_MCG";
+
+ case MLX5_CMD_OP_DETACH_FROM_MCG:
+ return "DETACH_FROM_MCG";
+
+ case MLX5_CMD_OP_ALLOC_XRCD:
+ return "ALLOC_XRCD";
+
+ case MLX5_CMD_OP_DEALLOC_XRCD:
+ return "DEALLOC_XRCD";
+
+ case MLX5_CMD_OP_ACCESS_REG:
+ return "MLX5_CMD_OP_ACCESS_REG";
+
+ default: return "unknown command opcode";
+ }
+}
+
+static void dump_command(struct mlx5_core_dev *dev,
+ struct mlx5_cmd_work_ent *ent, int input)
+{
+ u16 op = be16_to_cpu(((struct mlx5_inbox_hdr *)(ent->lay->in))->opcode);
+ struct mlx5_cmd_msg *msg = input ? ent->in : ent->out;
+ struct mlx5_cmd_mailbox *next = msg->next;
+ int data_only;
+ int offset = 0;
+ int dump_len;
+
+ data_only = !!(mlx5_core_debug_mask & (1 << MLX5_CMD_DATA));
+
+ if (data_only)
+ mlx5_core_dbg_mask(dev, 1 << MLX5_CMD_DATA,
+ "dump command data %s(0x%x) %s\n",
+ mlx5_command_str(op), op,
+ input ? "INPUT" : "OUTPUT");
+ else
+ mlx5_core_dbg(dev, "dump command %s(0x%x) %s\n",
+ mlx5_command_str(op), op,
+ input ? "INPUT" : "OUTPUT");
+
+ if (data_only) {
+ if (input) {
+ dump_buf(ent->lay->in, sizeof(ent->lay->in), 1, offset);
+ offset += sizeof(ent->lay->in);
+ } else {
+ dump_buf(ent->lay->out, sizeof(ent->lay->out), 1, offset);
+ offset += sizeof(ent->lay->out);
+ }
+ } else {
+ dump_buf(ent->lay, sizeof(*ent->lay), 0, offset);
+ offset += sizeof(*ent->lay);
+ }
+
+ while (next && offset < msg->len) {
+ if (data_only) {
+ dump_len = min_t(int, MLX5_CMD_DATA_BLOCK_SIZE, msg->len - offset);
+ dump_buf(next->buf, dump_len, 1, offset);
+ offset += MLX5_CMD_DATA_BLOCK_SIZE;
+ } else {
+ mlx5_core_dbg(dev, "command block:\n");
+ dump_buf(next->buf, sizeof(struct mlx5_cmd_prot_block), 0, offset);
+ offset += sizeof(struct mlx5_cmd_prot_block);
+ }
+ next = next->next;
+ }
+
+ if (data_only)
+ pr_debug("\n");
+}
+
+static void cmd_work_handler(struct work_struct *work)
+{
+ struct mlx5_cmd_work_ent *ent = container_of(work, struct mlx5_cmd_work_ent, work);
+ struct mlx5_cmd *cmd = ent->cmd;
+ struct mlx5_core_dev *dev = container_of(cmd, struct mlx5_core_dev, cmd);
+ struct mlx5_cmd_layout *lay;
+ struct semaphore *sem;
+
+ sem = ent->page_queue ? &cmd->pages_sem : &cmd->sem;
+ down(sem);
+ if (!ent->page_queue) {
+ ent->idx = alloc_ent(cmd);
+ if (ent->idx < 0) {
+ mlx5_core_err(dev, "failed to allocate command entry\n");
+ up(sem);
+ return;
+ }
+ } else {
+ ent->idx = cmd->max_reg_cmds;
+ }
+
+ ent->token = alloc_token(cmd);
+ cmd->ent_arr[ent->idx] = ent;
+ lay = get_inst(cmd, ent->idx);
+ ent->lay = lay;
+ memset(lay, 0, sizeof(*lay));
+ memcpy(lay->in, ent->in->first.data, sizeof(lay->in));
+ if (ent->in->next)
+ lay->in_ptr = cpu_to_be64(ent->in->next->dma);
+ lay->inlen = cpu_to_be32(ent->in->len);
+ if (ent->out->next)
+ lay->out_ptr = cpu_to_be64(ent->out->next->dma);
+ lay->outlen = cpu_to_be32(ent->out->len);
+ lay->type = MLX5_PCI_CMD_XPORT;
+ lay->token = ent->token;
+ lay->status_own = CMD_OWNER_HW;
+ if (!cmd->checksum_disabled)
+ set_signature(ent);
+ dump_command(dev, ent, 1);
+ ktime_get_ts(&ent->ts1);
+
+ /* ring doorbell after the descriptor is valid */
+ wmb();
+ iowrite32be(1 << ent->idx, &dev->iseg->cmd_dbell);
+ mlx5_core_dbg(dev, "write 0x%x to command doorbell\n", 1 << ent->idx);
+ mmiowb();
+ if (cmd->mode == CMD_MODE_POLLING) {
+ poll_timeout(ent);
+ /* make sure we read the descriptor after ownership is SW */
+ rmb();
+ mlx5_cmd_comp_handler(dev, 1UL << ent->idx);
+ }
+}
+
+static const char *deliv_status_to_str(u8 status)
+{
+ switch (status) {
+ case MLX5_CMD_DELIVERY_STAT_OK:
+ return "no errors";
+ case MLX5_CMD_DELIVERY_STAT_SIGNAT_ERR:
+ return "signature error";
+ case MLX5_CMD_DELIVERY_STAT_TOK_ERR:
+ return "token error";
+ case MLX5_CMD_DELIVERY_STAT_BAD_BLK_NUM_ERR:
+ return "bad block number";
+ case MLX5_CMD_DELIVERY_STAT_OUT_PTR_ALIGN_ERR:
+ return "output pointer not aligned to block size";
+ case MLX5_CMD_DELIVERY_STAT_IN_PTR_ALIGN_ERR:
+ return "input pointer not aligned to block size";
+ case MLX5_CMD_DELIVERY_STAT_FW_ERR:
+ return "firmware internal error";
+ case MLX5_CMD_DELIVERY_STAT_IN_LENGTH_ERR:
+ return "command input length error";
+ case MLX5_CMD_DELIVERY_STAT_OUT_LENGTH_ERR:
+ return "command ouput length error";
+ case MLX5_CMD_DELIVERY_STAT_RES_FLD_NOT_CLR_ERR:
+ return "reserved fields not cleared";
+ case MLX5_CMD_DELIVERY_STAT_CMD_DESCR_ERR:
+ return "bad command descriptor type";
+ default:
+ return "unknown status code";
+ }
+}
+
+static u16 msg_to_opcode(struct mlx5_cmd_msg *in)
+{
+ struct mlx5_inbox_hdr *hdr = (struct mlx5_inbox_hdr *)(in->first.data);
+
+ return be16_to_cpu(hdr->opcode);
+}
+
+static int wait_func(struct mlx5_core_dev *dev, struct mlx5_cmd_work_ent *ent)
+{
+ unsigned long timeout = msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC);
+ struct mlx5_cmd *cmd = &dev->cmd;
+ int err;
+
+ if (cmd->mode == CMD_MODE_POLLING) {
+ wait_for_completion(&ent->done);
+ err = ent->ret;
+ } else {
+ if (!wait_for_completion_timeout(&ent->done, timeout))
+ err = -ETIMEDOUT;
+ else
+ err = 0;
+ }
+ if (err == -ETIMEDOUT) {
+ mlx5_core_warn(dev, "%s(0x%x) timeout. Will cause a leak of a command resource\n",
+ mlx5_command_str(msg_to_opcode(ent->in)),
+ msg_to_opcode(ent->in));
+ }
+ mlx5_core_dbg(dev, "err %d, delivery status %s(%d)\n", err,
+ deliv_status_to_str(ent->status), ent->status);
+
+ return err;
+}
+
+/* Notes:
+ * 1. Callback functions may not sleep
+ * 2. page queue commands do not support asynchrous completion
+ */
+static int mlx5_cmd_invoke(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *in,
+ struct mlx5_cmd_msg *out, mlx5_cmd_cbk_t callback,
+ void *context, int page_queue, u8 *status)
+{
+ struct mlx5_cmd *cmd = &dev->cmd;
+ struct mlx5_cmd_work_ent *ent;
+ ktime_t t1, t2, delta;
+ struct mlx5_cmd_stats *stats;
+ int err = 0;
+ s64 ds;
+ u16 op;
+
+ if (callback && page_queue)
+ return -EINVAL;
+
+ ent = alloc_cmd(cmd, in, out, callback, context, page_queue);
+ if (IS_ERR(ent))
+ return PTR_ERR(ent);
+
+ if (!callback)
+ init_completion(&ent->done);
+
+ INIT_WORK(&ent->work, cmd_work_handler);
+ if (page_queue) {
+ cmd_work_handler(&ent->work);
+ } else if (!queue_work(cmd->wq, &ent->work)) {
+ mlx5_core_warn(dev, "failed to queue work\n");
+ err = -ENOMEM;
+ goto out_free;
+ }
+
+ if (!callback) {
+ err = wait_func(dev, ent);
+ if (err == -ETIMEDOUT)
+ goto out;
+
+ t1 = timespec_to_ktime(ent->ts1);
+ t2 = timespec_to_ktime(ent->ts2);
+ delta = ktime_sub(t2, t1);
+ ds = ktime_to_ns(delta);
+ op = be16_to_cpu(((struct mlx5_inbox_hdr *)in->first.data)->opcode);
+ if (op < ARRAY_SIZE(cmd->stats)) {
+ stats = &cmd->stats[op];
+ spin_lock(&stats->lock);
+ stats->sum += ds;
+ ++stats->n;
+ spin_unlock(&stats->lock);
+ }
+ mlx5_core_dbg_mask(dev, 1 << MLX5_CMD_TIME,
+ "fw exec time for %s is %lld nsec\n",
+ mlx5_command_str(op), ds);
+ *status = ent->status;
+ free_cmd(ent);
+ }
+
+ return err;
+
+out_free:
+ free_cmd(ent);
+out:
+ return err;
+}
+
+static ssize_t dbg_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct mlx5_core_dev *dev = filp->private_data;
+ struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
+ char lbuf[3];
+ int err;
+
+ if (!dbg->in_msg || !dbg->out_msg)
+ return -ENOMEM;
+
+ if (copy_from_user(lbuf, buf, sizeof(lbuf)))
+ return -EPERM;
+
+ lbuf[sizeof(lbuf) - 1] = 0;
+
+ if (strcmp(lbuf, "go"))
+ return -EINVAL;
+
+ err = mlx5_cmd_exec(dev, dbg->in_msg, dbg->inlen, dbg->out_msg, dbg->outlen);
+
+ return err ? err : count;
+}
+
+
+static const struct file_operations fops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .write = dbg_write,
+};
+
+static int mlx5_copy_to_msg(struct mlx5_cmd_msg *to, void *from, int size)
+{
+ struct mlx5_cmd_prot_block *block;
+ struct mlx5_cmd_mailbox *next;
+ int copy;
+
+ if (!to || !from)
+ return -ENOMEM;
+
+ copy = min_t(int, size, sizeof(to->first.data));
+ memcpy(to->first.data, from, copy);
+ size -= copy;
+ from += copy;
+
+ next = to->next;
+ while (size) {
+ if (!next) {
+ /* this is a BUG */
+ return -ENOMEM;
+ }
+
+ copy = min_t(int, size, MLX5_CMD_DATA_BLOCK_SIZE);
+ block = next->buf;
+ memcpy(block->data, from, copy);
+ from += copy;
+ size -= copy;
+ next = next->next;
+ }
+
+ return 0;
+}
+
+static int mlx5_copy_from_msg(void *to, struct mlx5_cmd_msg *from, int size)
+{
+ struct mlx5_cmd_prot_block *block;
+ struct mlx5_cmd_mailbox *next;
+ int copy;
+
+ if (!to || !from)
+ return -ENOMEM;
+
+ copy = min_t(int, size, sizeof(from->first.data));
+ memcpy(to, from->first.data, copy);
+ size -= copy;
+ to += copy;
+
+ next = from->next;
+ while (size) {
+ if (!next) {
+ /* this is a BUG */
+ return -ENOMEM;
+ }
+
+ copy = min_t(int, size, MLX5_CMD_DATA_BLOCK_SIZE);
+ block = next->buf;
+ if (xor8_buf(block, sizeof(*block)) != 0xff)
+ return -EINVAL;
+
+ memcpy(to, block->data, copy);
+ to += copy;
+ size -= copy;
+ next = next->next;
+ }
+
+ return 0;
+}
+
+static struct mlx5_cmd_mailbox *alloc_cmd_box(struct mlx5_core_dev *dev,
+ gfp_t flags)
+{
+ struct mlx5_cmd_mailbox *mailbox;
+
+ mailbox = kmalloc(sizeof(*mailbox), flags);
+ if (!mailbox)
+ return ERR_PTR(-ENOMEM);
+
+ mailbox->buf = pci_pool_alloc(dev->cmd.pool, flags,
+ &mailbox->dma);
+ if (!mailbox->buf) {
+ mlx5_core_dbg(dev, "failed allocation\n");
+ kfree(mailbox);
+ return ERR_PTR(-ENOMEM);
+ }
+ memset(mailbox->buf, 0, sizeof(struct mlx5_cmd_prot_block));
+ mailbox->next = NULL;
+
+ return mailbox;
+}
+
+static void free_cmd_box(struct mlx5_core_dev *dev,
+ struct mlx5_cmd_mailbox *mailbox)
+{
+ pci_pool_free(dev->cmd.pool, mailbox->buf, mailbox->dma);
+ kfree(mailbox);
+}
+
+static struct mlx5_cmd_msg *mlx5_alloc_cmd_msg(struct mlx5_core_dev *dev,
+ gfp_t flags, int size)
+{
+ struct mlx5_cmd_mailbox *tmp, *head = NULL;
+ struct mlx5_cmd_prot_block *block;
+ struct mlx5_cmd_msg *msg;
+ int blen;
+ int err;
+ int n;
+ int i;
+
+ msg = kzalloc(sizeof(*msg), GFP_KERNEL);
+ if (!msg)
+ return ERR_PTR(-ENOMEM);
+
+ blen = size - min_t(int, sizeof(msg->first.data), size);
+ n = (blen + MLX5_CMD_DATA_BLOCK_SIZE - 1) / MLX5_CMD_DATA_BLOCK_SIZE;
+
+ for (i = 0; i < n; i++) {
+ tmp = alloc_cmd_box(dev, flags);
+ if (IS_ERR(tmp)) {
+ mlx5_core_warn(dev, "failed allocating block\n");
+ err = PTR_ERR(tmp);
+ goto err_alloc;
+ }
+
+ block = tmp->buf;
+ tmp->next = head;
+ block->next = cpu_to_be64(tmp->next ? tmp->next->dma : 0);
+ block->block_num = cpu_to_be32(n - i - 1);
+ head = tmp;
+ }
+ msg->next = head;
+ msg->len = size;
+ return msg;
+
+err_alloc:
+ while (head) {
+ tmp = head->next;
+ free_cmd_box(dev, head);
+ head = tmp;
+ }
+ kfree(msg);
+
+ return ERR_PTR(err);
+}
+
+static void mlx5_free_cmd_msg(struct mlx5_core_dev *dev,
+ struct mlx5_cmd_msg *msg)
+{
+ struct mlx5_cmd_mailbox *head = msg->next;
+ struct mlx5_cmd_mailbox *next;
+
+ while (head) {
+ next = head->next;
+ free_cmd_box(dev, head);
+ head = next;
+ }
+ kfree(msg);
+}
+
+static ssize_t data_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct mlx5_core_dev *dev = filp->private_data;
+ struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
+ void *ptr;
+ int err;
+
+ if (*pos != 0)
+ return -EINVAL;
+
+ kfree(dbg->in_msg);
+ dbg->in_msg = NULL;
+ dbg->inlen = 0;
+
+ ptr = kzalloc(count, GFP_KERNEL);
+ if (!ptr)
+ return -ENOMEM;
+
+ if (copy_from_user(ptr, buf, count)) {
+ err = -EPERM;
+ goto out;
+ }
+ dbg->in_msg = ptr;
+ dbg->inlen = count;
+
+ *pos = count;
+
+ return count;
+
+out:
+ kfree(ptr);
+ return err;
+}
+
+static ssize_t data_read(struct file *filp, char __user *buf, size_t count,
+ loff_t *pos)
+{
+ struct mlx5_core_dev *dev = filp->private_data;
+ struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
+ int copy;
+
+ if (*pos)
+ return 0;
+
+ if (!dbg->out_msg)
+ return -ENOMEM;
+
+ copy = min_t(int, count, dbg->outlen);
+ if (copy_to_user(buf, dbg->out_msg, copy))
+ return -EPERM;
+
+ *pos += copy;
+
+ return copy;
+}
+
+static const struct file_operations dfops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .write = data_write,
+ .read = data_read,
+};
+
+static ssize_t outlen_read(struct file *filp, char __user *buf, size_t count,
+ loff_t *pos)
+{
+ struct mlx5_core_dev *dev = filp->private_data;
+ struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
+ char outlen[8];
+ int err;
+
+ if (*pos)
+ return 0;
+
+ err = snprintf(outlen, sizeof(outlen), "%d", dbg->outlen);
+ if (err < 0)
+ return err;
+
+ if (copy_to_user(buf, &outlen, err))
+ return -EPERM;
+
+ *pos += err;
+
+ return err;
+}
+
+static ssize_t outlen_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct mlx5_core_dev *dev = filp->private_data;
+ struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
+ char outlen_str[8];
+ int outlen;
+ void *ptr;
+ int err;
+
+ if (*pos != 0 || count > 6)
+ return -EINVAL;
+
+ kfree(dbg->out_msg);
+ dbg->out_msg = NULL;
+ dbg->outlen = 0;
+
+ if (copy_from_user(outlen_str, buf, count))
+ return -EPERM;
+
+ outlen_str[7] = 0;
+
+ err = sscanf(outlen_str, "%d", &outlen);
+ if (err < 0)
+ return err;
+
+ ptr = kzalloc(outlen, GFP_KERNEL);
+ if (!ptr)
+ return -ENOMEM;
+
+ dbg->out_msg = ptr;
+ dbg->outlen = outlen;
+
+ *pos = count;
+
+ return count;
+}
+
+static const struct file_operations olfops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .write = outlen_write,
+ .read = outlen_read,
+};
+
+static void set_wqname(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd *cmd = &dev->cmd;
+
+ snprintf(cmd->wq_name, sizeof(cmd->wq_name), "mlx5_cmd_%s",
+ dev_name(&dev->pdev->dev));
+}
+
+static void clean_debug_files(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
+
+ if (!mlx5_debugfs_root)
+ return;
+
+ mlx5_cmdif_debugfs_cleanup(dev);
+ debugfs_remove_recursive(dbg->dbg_root);
+}
+
+static int create_debugfs_files(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
+ int err = -ENOMEM;
+
+ if (!mlx5_debugfs_root)
+ return 0;
+
+ dbg->dbg_root = debugfs_create_dir("cmd", dev->priv.dbg_root);
+ if (!dbg->dbg_root)
+ return err;
+
+ dbg->dbg_in = debugfs_create_file("in", 0400, dbg->dbg_root,
+ dev, &dfops);
+ if (!dbg->dbg_in)
+ goto err_dbg;
+
+ dbg->dbg_out = debugfs_create_file("out", 0200, dbg->dbg_root,
+ dev, &dfops);
+ if (!dbg->dbg_out)
+ goto err_dbg;
+
+ dbg->dbg_outlen = debugfs_create_file("out_len", 0600, dbg->dbg_root,
+ dev, &olfops);
+ if (!dbg->dbg_outlen)
+ goto err_dbg;
+
+ dbg->dbg_status = debugfs_create_u8("status", 0600, dbg->dbg_root,
+ &dbg->status);
+ if (!dbg->dbg_status)
+ goto err_dbg;
+
+ dbg->dbg_run = debugfs_create_file("run", 0200, dbg->dbg_root, dev, &fops);
+ if (!dbg->dbg_run)
+ goto err_dbg;
+
+ mlx5_cmdif_debugfs_init(dev);
+
+ return 0;
+
+err_dbg:
+ clean_debug_files(dev);
+ return err;
+}
+
+void mlx5_cmd_use_events(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd *cmd = &dev->cmd;
+ int i;
+
+ for (i = 0; i < cmd->max_reg_cmds; i++)
+ down(&cmd->sem);
+
+ down(&cmd->pages_sem);
+
+ flush_workqueue(cmd->wq);
+
+ cmd->mode = CMD_MODE_EVENTS;
+
+ up(&cmd->pages_sem);
+ for (i = 0; i < cmd->max_reg_cmds; i++)
+ up(&cmd->sem);
+}
+
+void mlx5_cmd_use_polling(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd *cmd = &dev->cmd;
+ int i;
+
+ for (i = 0; i < cmd->max_reg_cmds; i++)
+ down(&cmd->sem);
+
+ down(&cmd->pages_sem);
+
+ flush_workqueue(cmd->wq);
+ cmd->mode = CMD_MODE_POLLING;
+
+ up(&cmd->pages_sem);
+ for (i = 0; i < cmd->max_reg_cmds; i++)
+ up(&cmd->sem);
+}
+
+void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, unsigned long vector)
+{
+ struct mlx5_cmd *cmd = &dev->cmd;
+ struct mlx5_cmd_work_ent *ent;
+ mlx5_cmd_cbk_t callback;
+ void *context;
+ int err;
+ int i;
+
+ for (i = 0; i < (1 << cmd->log_sz); i++) {
+ if (test_bit(i, &vector)) {
+ ent = cmd->ent_arr[i];
+ ktime_get_ts(&ent->ts2);
+ memcpy(ent->out->first.data, ent->lay->out, sizeof(ent->lay->out));
+ dump_command(dev, ent, 0);
+ if (!ent->ret) {
+ if (!cmd->checksum_disabled)
+ ent->ret = verify_signature(ent);
+ else
+ ent->ret = 0;
+ ent->status = ent->lay->status_own >> 1;
+ mlx5_core_dbg(dev, "command completed. ret 0x%x, delivery status %s(0x%x)\n",
+ ent->ret, deliv_status_to_str(ent->status), ent->status);
+ }
+ free_ent(cmd, ent->idx);
+ if (ent->callback) {
+ callback = ent->callback;
+ context = ent->context;
+ err = ent->ret;
+ free_cmd(ent);
+ callback(err, context);
+ } else {
+ complete(&ent->done);
+ }
+ if (ent->page_queue)
+ up(&cmd->pages_sem);
+ else
+ up(&cmd->sem);
+ }
+ }
+}
+EXPORT_SYMBOL(mlx5_cmd_comp_handler);
+
+static int status_to_err(u8 status)
+{
+ return status ? -1 : 0; /* TBD more meaningful codes */
+}
+
+static struct mlx5_cmd_msg *alloc_msg(struct mlx5_core_dev *dev, int in_size)
+{
+ struct mlx5_cmd_msg *msg = ERR_PTR(-ENOMEM);
+ struct mlx5_cmd *cmd = &dev->cmd;
+ struct cache_ent *ent = NULL;
+
+ if (in_size > MED_LIST_SIZE && in_size <= LONG_LIST_SIZE)
+ ent = &cmd->cache.large;
+ else if (in_size > 16 && in_size <= MED_LIST_SIZE)
+ ent = &cmd->cache.med;
+
+ if (ent) {
+ spin_lock(&ent->lock);
+ if (!list_empty(&ent->head)) {
+ msg = list_entry(ent->head.next, typeof(*msg), list);
+ /* For cached lists, we must explicitly state what is
+ * the real size
+ */
+ msg->len = in_size;
+ list_del(&msg->list);
+ }
+ spin_unlock(&ent->lock);
+ }
+
+ if (IS_ERR(msg))
+ msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, in_size);
+
+ return msg;
+}
+
+static void free_msg(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *msg)
+{
+ if (msg->cache) {
+ spin_lock(&msg->cache->lock);
+ list_add_tail(&msg->list, &msg->cache->head);
+ spin_unlock(&msg->cache->lock);
+ } else {
+ mlx5_free_cmd_msg(dev, msg);
+ }
+}
+
+static int is_manage_pages(struct mlx5_inbox_hdr *in)
+{
+ return be16_to_cpu(in->opcode) == MLX5_CMD_OP_MANAGE_PAGES;
+}
+
+int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out,
+ int out_size)
+{
+ struct mlx5_cmd_msg *inb;
+ struct mlx5_cmd_msg *outb;
+ int pages_queue;
+ int err;
+ u8 status = 0;
+
+ pages_queue = is_manage_pages(in);
+
+ inb = alloc_msg(dev, in_size);
+ if (IS_ERR(inb)) {
+ err = PTR_ERR(inb);
+ return err;
+ }
+
+ err = mlx5_copy_to_msg(inb, in, in_size);
+ if (err) {
+ mlx5_core_warn(dev, "err %d\n", err);
+ goto out_in;
+ }
+
+ outb = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, out_size);
+ if (IS_ERR(outb)) {
+ err = PTR_ERR(outb);
+ goto out_in;
+ }
+
+ err = mlx5_cmd_invoke(dev, inb, outb, NULL, NULL, pages_queue, &status);
+ if (err)
+ goto out_out;
+
+ mlx5_core_dbg(dev, "err %d, status %d\n", err, status);
+ if (status) {
+ err = status_to_err(status);
+ goto out_out;
+ }
+
+ err = mlx5_copy_from_msg(out, outb, out_size);
+
+out_out:
+ mlx5_free_cmd_msg(dev, outb);
+
+out_in:
+ free_msg(dev, inb);
+ return err;
+}
+EXPORT_SYMBOL(mlx5_cmd_exec);
+
+static void destroy_msg_cache(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd *cmd = &dev->cmd;
+ struct mlx5_cmd_msg *msg;
+ struct mlx5_cmd_msg *n;
+
+ list_for_each_entry_safe(msg, n, &cmd->cache.large.head, list) {
+ list_del(&msg->list);
+ mlx5_free_cmd_msg(dev, msg);
+ }
+
+ list_for_each_entry_safe(msg, n, &cmd->cache.med.head, list) {
+ list_del(&msg->list);
+ mlx5_free_cmd_msg(dev, msg);
+ }
+}
+
+static int create_msg_cache(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd *cmd = &dev->cmd;
+ struct mlx5_cmd_msg *msg;
+ int err;
+ int i;
+
+ spin_lock_init(&cmd->cache.large.lock);
+ INIT_LIST_HEAD(&cmd->cache.large.head);
+ spin_lock_init(&cmd->cache.med.lock);
+ INIT_LIST_HEAD(&cmd->cache.med.head);
+
+ for (i = 0; i < NUM_LONG_LISTS; i++) {
+ msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, LONG_LIST_SIZE);
+ if (IS_ERR(msg)) {
+ err = PTR_ERR(msg);
+ goto ex_err;
+ }
+ msg->cache = &cmd->cache.large;
+ list_add_tail(&msg->list, &cmd->cache.large.head);
+ }
+
+ for (i = 0; i < NUM_MED_LISTS; i++) {
+ msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, MED_LIST_SIZE);
+ if (IS_ERR(msg)) {
+ err = PTR_ERR(msg);
+ goto ex_err;
+ }
+ msg->cache = &cmd->cache.med;
+ list_add_tail(&msg->list, &cmd->cache.med.head);
+ }
+
+ return 0;
+
+ex_err:
+ destroy_msg_cache(dev);
+ return err;
+}
+
+int mlx5_cmd_init(struct mlx5_core_dev *dev)
+{
+ int size = sizeof(struct mlx5_cmd_prot_block);
+ int align = roundup_pow_of_two(size);
+ struct mlx5_cmd *cmd = &dev->cmd;
+ u32 cmd_h, cmd_l;
+ u16 cmd_if_rev;
+ int err;
+ int i;
+
+ cmd_if_rev = cmdif_rev(dev);
+ if (cmd_if_rev != CMD_IF_REV) {
+ dev_err(&dev->pdev->dev,
+ "Driver cmdif rev(%d) differs from firmware's(%d)\n",
+ CMD_IF_REV, cmd_if_rev);
+ return -EINVAL;
+ }
+
+ cmd->pool = pci_pool_create("mlx5_cmd", dev->pdev, size, align, 0);
+ if (!cmd->pool)
+ return -ENOMEM;
+
+ cmd->cmd_buf = (void *)__get_free_pages(GFP_ATOMIC, 0);
+ if (!cmd->cmd_buf) {
+ err = -ENOMEM;
+ goto err_free_pool;
+ }
+ cmd->dma = dma_map_single(&dev->pdev->dev, cmd->cmd_buf, PAGE_SIZE,
+ DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(&dev->pdev->dev, cmd->dma)) {
+ err = -ENOMEM;
+ goto err_free;
+ }
+
+ cmd_l = ioread32be(&dev->iseg->cmdq_addr_l_sz) & 0xff;
+ cmd->log_sz = cmd_l >> 4 & 0xf;
+ cmd->log_stride = cmd_l & 0xf;
+ if (1 << cmd->log_sz > MLX5_MAX_COMMANDS) {
+ dev_err(&dev->pdev->dev, "firmware reports too many outstanding commands %d\n",
+ 1 << cmd->log_sz);
+ err = -EINVAL;
+ goto err_map;
+ }
+
+ if (cmd->log_sz + cmd->log_stride > PAGE_SHIFT) {
+ dev_err(&dev->pdev->dev, "command queue size overflow\n");
+ err = -EINVAL;
+ goto err_map;
+ }
+
+ cmd->max_reg_cmds = (1 << cmd->log_sz) - 1;
+ cmd->bitmask = (1 << cmd->max_reg_cmds) - 1;
+
+ cmd->cmdif_rev = ioread32be(&dev->iseg->cmdif_rev_fw_sub) >> 16;
+ if (cmd->cmdif_rev > CMD_IF_REV) {
+ dev_err(&dev->pdev->dev, "driver does not support command interface version. driver %d, firmware %d\n",
+ CMD_IF_REV, cmd->cmdif_rev);
+ err = -ENOTSUPP;
+ goto err_map;
+ }
+
+ spin_lock_init(&cmd->alloc_lock);
+ spin_lock_init(&cmd->token_lock);
+ for (i = 0; i < ARRAY_SIZE(cmd->stats); i++)
+ spin_lock_init(&cmd->stats[i].lock);
+
+ sema_init(&cmd->sem, cmd->max_reg_cmds);
+ sema_init(&cmd->pages_sem, 1);
+
+ cmd_h = (u32)((u64)(cmd->dma) >> 32);
+ cmd_l = (u32)(cmd->dma);
+ if (cmd_l & 0xfff) {
+ dev_err(&dev->pdev->dev, "invalid command queue address\n");
+ err = -ENOMEM;
+ goto err_map;
+ }
+
+ iowrite32be(cmd_h, &dev->iseg->cmdq_addr_h);
+ iowrite32be(cmd_l, &dev->iseg->cmdq_addr_l_sz);
+
+ /* Make sure firmware sees the complete address before we proceed */
+ wmb();
+
+ mlx5_core_dbg(dev, "descriptor at dma 0x%llx\n", (unsigned long long)(cmd->dma));
+
+ cmd->mode = CMD_MODE_POLLING;
+
+ err = create_msg_cache(dev);
+ if (err) {
+ dev_err(&dev->pdev->dev, "failed to create command cache\n");
+ goto err_map;
+ }
+
+ set_wqname(dev);
+ cmd->wq = create_singlethread_workqueue(cmd->wq_name);
+ if (!cmd->wq) {
+ dev_err(&dev->pdev->dev, "failed to create command workqueue\n");
+ err = -ENOMEM;
+ goto err_cache;
+ }
+
+ err = create_debugfs_files(dev);
+ if (err) {
+ err = -ENOMEM;
+ goto err_wq;
+ }
+
+ return 0;
+
+err_wq:
+ destroy_workqueue(cmd->wq);
+
+err_cache:
+ destroy_msg_cache(dev);
+
+err_map:
+ dma_unmap_single(&dev->pdev->dev, cmd->dma, PAGE_SIZE,
+ DMA_BIDIRECTIONAL);
+err_free:
+ free_pages((unsigned long)cmd->cmd_buf, 0);
+
+err_free_pool:
+ pci_pool_destroy(cmd->pool);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_cmd_init);
+
+void mlx5_cmd_cleanup(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd *cmd = &dev->cmd;
+
+ clean_debug_files(dev);
+ destroy_workqueue(cmd->wq);
+ destroy_msg_cache(dev);
+ dma_unmap_single(&dev->pdev->dev, cmd->dma, PAGE_SIZE,
+ DMA_BIDIRECTIONAL);
+ free_pages((unsigned long)cmd->cmd_buf, 0);
+ pci_pool_destroy(cmd->pool);
+}
+EXPORT_SYMBOL(mlx5_cmd_cleanup);
+
+static const char *cmd_status_str(u8 status)
+{
+ switch (status) {
+ case MLX5_CMD_STAT_OK:
+ return "OK";
+ case MLX5_CMD_STAT_INT_ERR:
+ return "internal error";
+ case MLX5_CMD_STAT_BAD_OP_ERR:
+ return "bad operation";
+ case MLX5_CMD_STAT_BAD_PARAM_ERR:
+ return "bad parameter";
+ case MLX5_CMD_STAT_BAD_SYS_STATE_ERR:
+ return "bad system state";
+ case MLX5_CMD_STAT_BAD_RES_ERR:
+ return "bad resource";
+ case MLX5_CMD_STAT_RES_BUSY:
+ return "resource busy";
+ case MLX5_CMD_STAT_LIM_ERR:
+ return "limits exceeded";
+ case MLX5_CMD_STAT_BAD_RES_STATE_ERR:
+ return "bad resource state";
+ case MLX5_CMD_STAT_IX_ERR:
+ return "bad index";
+ case MLX5_CMD_STAT_NO_RES_ERR:
+ return "no resources";
+ case MLX5_CMD_STAT_BAD_INP_LEN_ERR:
+ return "bad input length";
+ case MLX5_CMD_STAT_BAD_OUTP_LEN_ERR:
+ return "bad output length";
+ case MLX5_CMD_STAT_BAD_QP_STATE_ERR:
+ return "bad QP state";
+ case MLX5_CMD_STAT_BAD_PKT_ERR:
+ return "bad packet (discarded)";
+ case MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR:
+ return "bad size too many outstanding CQEs";
+ default:
+ return "unknown status";
+ }
+}
+
+int mlx5_cmd_status_to_err(struct mlx5_outbox_hdr *hdr)
+{
+ if (!hdr->status)
+ return 0;
+
+ pr_warn("command failed, status %s(0x%x), syndrome 0x%x\n",
+ cmd_status_str(hdr->status), hdr->status,
+ be32_to_cpu(hdr->syndrome));
+
+ switch (hdr->status) {
+ case MLX5_CMD_STAT_OK: return 0;
+ case MLX5_CMD_STAT_INT_ERR: return -EIO;
+ case MLX5_CMD_STAT_BAD_OP_ERR: return -EINVAL;
+ case MLX5_CMD_STAT_BAD_PARAM_ERR: return -EINVAL;
+ case MLX5_CMD_STAT_BAD_SYS_STATE_ERR: return -EIO;
+ case MLX5_CMD_STAT_BAD_RES_ERR: return -EINVAL;
+ case MLX5_CMD_STAT_RES_BUSY: return -EBUSY;
+ case MLX5_CMD_STAT_LIM_ERR: return -EINVAL;
+ case MLX5_CMD_STAT_BAD_RES_STATE_ERR: return -EINVAL;
+ case MLX5_CMD_STAT_IX_ERR: return -EINVAL;
+ case MLX5_CMD_STAT_NO_RES_ERR: return -EAGAIN;
+ case MLX5_CMD_STAT_BAD_INP_LEN_ERR: return -EIO;
+ case MLX5_CMD_STAT_BAD_OUTP_LEN_ERR: return -EIO;
+ case MLX5_CMD_STAT_BAD_QP_STATE_ERR: return -EINVAL;
+ case MLX5_CMD_STAT_BAD_PKT_ERR: return -EINVAL;
+ case MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR: return -EINVAL;
+ default: return -EIO;
+ }
+}
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/hardirq.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include <rdma/ib_verbs.h>
+#include <linux/mlx5/cq.h>
+#include "mlx5_core.h"
+
+void mlx5_cq_completion(struct mlx5_core_dev *dev, u32 cqn)
+{
+ struct mlx5_core_cq *cq;
+ struct mlx5_cq_table *table = &dev->priv.cq_table;
+
+ spin_lock(&table->lock);
+ cq = radix_tree_lookup(&table->tree, cqn);
+ if (likely(cq))
+ atomic_inc(&cq->refcount);
+ spin_unlock(&table->lock);
+
+ if (!cq) {
+ mlx5_core_warn(dev, "Completion event for bogus CQ 0x%x\n", cqn);
+ return;
+ }
+
+ ++cq->arm_sn;
+
+ cq->comp(cq);
+
+ if (atomic_dec_and_test(&cq->refcount))
+ complete(&cq->free);
+}
+
+void mlx5_cq_event(struct mlx5_core_dev *dev, u32 cqn, int event_type)
+{
+ struct mlx5_cq_table *table = &dev->priv.cq_table;
+ struct mlx5_core_cq *cq;
+
+ spin_lock(&table->lock);
+
+ cq = radix_tree_lookup(&table->tree, cqn);
+ if (cq)
+ atomic_inc(&cq->refcount);
+
+ spin_unlock(&table->lock);
+
+ if (!cq) {
+ mlx5_core_warn(dev, "Async event for bogus CQ 0x%x\n", cqn);
+ return;
+ }
+
+ cq->event(cq, event_type);
+
+ if (atomic_dec_and_test(&cq->refcount))
+ complete(&cq->free);
+}
+
+
+int mlx5_core_create_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
+ struct mlx5_create_cq_mbox_in *in, int inlen)
+{
+ int err;
+ struct mlx5_cq_table *table = &dev->priv.cq_table;
+ struct mlx5_create_cq_mbox_out out;
+ struct mlx5_destroy_cq_mbox_in din;
+ struct mlx5_destroy_cq_mbox_out dout;
+
+ in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_CQ);
+ memset(&out, 0, sizeof(out));
+ err = mlx5_cmd_exec(dev, in, inlen, &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ cq->cqn = be32_to_cpu(out.cqn) & 0xffffff;
+ cq->cons_index = 0;
+ cq->arm_sn = 0;
+ atomic_set(&cq->refcount, 1);
+ init_completion(&cq->free);
+
+ spin_lock_irq(&table->lock);
+ err = radix_tree_insert(&table->tree, cq->cqn, cq);
+ spin_unlock_irq(&table->lock);
+ if (err)
+ goto err_cmd;
+
+ cq->pid = current->pid;
+ err = mlx5_debug_cq_add(dev, cq);
+ if (err)
+ mlx5_core_dbg(dev, "failed adding CP 0x%x to debug file system\n",
+ cq->cqn);
+
+ return 0;
+
+err_cmd:
+ memset(&din, 0, sizeof(din));
+ memset(&dout, 0, sizeof(dout));
+ din.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_CQ);
+ mlx5_cmd_exec(dev, &din, sizeof(din), &dout, sizeof(dout));
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_create_cq);
+
+int mlx5_core_destroy_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
+{
+ struct mlx5_cq_table *table = &dev->priv.cq_table;
+ struct mlx5_destroy_cq_mbox_in in;
+ struct mlx5_destroy_cq_mbox_out out;
+ struct mlx5_core_cq *tmp;
+ int err;
+
+ spin_lock_irq(&table->lock);
+ tmp = radix_tree_delete(&table->tree, cq->cqn);
+ spin_unlock_irq(&table->lock);
+ if (!tmp) {
+ mlx5_core_warn(dev, "cq 0x%x not found in tree\n", cq->cqn);
+ return -EINVAL;
+ }
+ if (tmp != cq) {
+ mlx5_core_warn(dev, "corruption on srqn 0x%x\n", cq->cqn);
+ return -EINVAL;
+ }
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_CQ);
+ in.cqn = cpu_to_be32(cq->cqn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ synchronize_irq(cq->irqn);
+
+ mlx5_debug_cq_remove(dev, cq);
+ if (atomic_dec_and_test(&cq->refcount))
+ complete(&cq->free);
+ wait_for_completion(&cq->free);
+
+ return 0;
+}
+EXPORT_SYMBOL(mlx5_core_destroy_cq);
+
+int mlx5_core_query_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
+ struct mlx5_query_cq_mbox_out *out)
+{
+ struct mlx5_query_cq_mbox_in in;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(out, 0, sizeof(*out));
+
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_CQ);
+ in.cqn = cpu_to_be32(cq->cqn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), out, sizeof(*out));
+ if (err)
+ return err;
+
+ if (out->hdr.status)
+ return mlx5_cmd_status_to_err(&out->hdr);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_query_cq);
+
+
+int mlx5_core_modify_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
+ int type, struct mlx5_cq_modify_params *params)
+{
+ return -ENOSYS;
+}
+
+int mlx5_init_cq_table(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cq_table *table = &dev->priv.cq_table;
+ int err;
+
+ spin_lock_init(&table->lock);
+ INIT_RADIX_TREE(&table->tree, GFP_ATOMIC);
+ err = mlx5_cq_debugfs_init(dev);
+
+ return err;
+}
+
+void mlx5_cleanup_cq_table(struct mlx5_core_dev *dev)
+{
+ mlx5_cq_debugfs_cleanup(dev);
+}
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/module.h>
+#include <linux/debugfs.h>
+#include <linux/mlx5/qp.h>
+#include <linux/mlx5/cq.h>
+#include <linux/mlx5/driver.h>
+#include "mlx5_core.h"
+
+enum {
+ QP_PID,
+ QP_STATE,
+ QP_XPORT,
+ QP_MTU,
+ QP_N_RECV,
+ QP_RECV_SZ,
+ QP_N_SEND,
+ QP_LOG_PG_SZ,
+ QP_RQPN,
+};
+
+static char *qp_fields[] = {
+ [QP_PID] = "pid",
+ [QP_STATE] = "state",
+ [QP_XPORT] = "transport",
+ [QP_MTU] = "mtu",
+ [QP_N_RECV] = "num_recv",
+ [QP_RECV_SZ] = "rcv_wqe_sz",
+ [QP_N_SEND] = "num_send",
+ [QP_LOG_PG_SZ] = "log2_page_sz",
+ [QP_RQPN] = "remote_qpn",
+};
+
+enum {
+ EQ_NUM_EQES,
+ EQ_INTR,
+ EQ_LOG_PG_SZ,
+};
+
+static char *eq_fields[] = {
+ [EQ_NUM_EQES] = "num_eqes",
+ [EQ_INTR] = "intr",
+ [EQ_LOG_PG_SZ] = "log_page_size",
+};
+
+enum {
+ CQ_PID,
+ CQ_NUM_CQES,
+ CQ_LOG_PG_SZ,
+};
+
+static char *cq_fields[] = {
+ [CQ_PID] = "pid",
+ [CQ_NUM_CQES] = "num_cqes",
+ [CQ_LOG_PG_SZ] = "log_page_size",
+};
+
+struct dentry *mlx5_debugfs_root;
+EXPORT_SYMBOL(mlx5_debugfs_root);
+
+void mlx5_register_debugfs(void)
+{
+ mlx5_debugfs_root = debugfs_create_dir("mlx5", NULL);
+ if (IS_ERR_OR_NULL(mlx5_debugfs_root))
+ mlx5_debugfs_root = NULL;
+}
+
+void mlx5_unregister_debugfs(void)
+{
+ debugfs_remove(mlx5_debugfs_root);
+}
+
+int mlx5_qp_debugfs_init(struct mlx5_core_dev *dev)
+{
+ if (!mlx5_debugfs_root)
+ return 0;
+
+ atomic_set(&dev->num_qps, 0);
+
+ dev->priv.qp_debugfs = debugfs_create_dir("QPs", dev->priv.dbg_root);
+ if (!dev->priv.qp_debugfs)
+ return -ENOMEM;
+
+ return 0;
+}
+
+void mlx5_qp_debugfs_cleanup(struct mlx5_core_dev *dev)
+{
+ if (!mlx5_debugfs_root)
+ return;
+
+ debugfs_remove_recursive(dev->priv.qp_debugfs);
+}
+
+int mlx5_eq_debugfs_init(struct mlx5_core_dev *dev)
+{
+ if (!mlx5_debugfs_root)
+ return 0;
+
+ dev->priv.eq_debugfs = debugfs_create_dir("EQs", dev->priv.dbg_root);
+ if (!dev->priv.eq_debugfs)
+ return -ENOMEM;
+
+ return 0;
+}
+
+void mlx5_eq_debugfs_cleanup(struct mlx5_core_dev *dev)
+{
+ if (!mlx5_debugfs_root)
+ return;
+
+ debugfs_remove_recursive(dev->priv.eq_debugfs);
+}
+
+static ssize_t average_read(struct file *filp, char __user *buf, size_t count,
+ loff_t *pos)
+{
+ struct mlx5_cmd_stats *stats;
+ u64 field = 0;
+ int ret;
+ int err;
+ char tbuf[22];
+
+ if (*pos)
+ return 0;
+
+ stats = filp->private_data;
+ spin_lock(&stats->lock);
+ if (stats->n)
+ field = stats->sum / stats->n;
+ spin_unlock(&stats->lock);
+ ret = snprintf(tbuf, sizeof(tbuf), "%llu\n", field);
+ if (ret > 0) {
+ err = copy_to_user(buf, tbuf, ret);
+ if (err)
+ return err;
+ }
+
+ *pos += ret;
+ return ret;
+}
+
+
+static ssize_t average_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct mlx5_cmd_stats *stats;
+
+ stats = filp->private_data;
+ spin_lock(&stats->lock);
+ stats->sum = 0;
+ stats->n = 0;
+ spin_unlock(&stats->lock);
+
+ *pos += count;
+
+ return count;
+}
+
+static const struct file_operations stats_fops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .read = average_read,
+ .write = average_write,
+};
+
+int mlx5_cmdif_debugfs_init(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd_stats *stats;
+ struct dentry **cmd;
+ const char *namep;
+ int err;
+ int i;
+
+ if (!mlx5_debugfs_root)
+ return 0;
+
+ cmd = &dev->priv.cmdif_debugfs;
+ *cmd = debugfs_create_dir("commands", dev->priv.dbg_root);
+ if (!*cmd)
+ return -ENOMEM;
+
+ for (i = 0; i < ARRAY_SIZE(dev->cmd.stats); i++) {
+ stats = &dev->cmd.stats[i];
+ namep = mlx5_command_str(i);
+ if (strcmp(namep, "unknown command opcode")) {
+ stats->root = debugfs_create_dir(namep, *cmd);
+ if (!stats->root) {
+ mlx5_core_warn(dev, "failed adding command %d\n",
+ i);
+ err = -ENOMEM;
+ goto out;
+ }
+
+ stats->avg = debugfs_create_file("average", 0400,
+ stats->root, stats,
+ &stats_fops);
+ if (!stats->avg) {
+ mlx5_core_warn(dev, "failed creating debugfs file\n");
+ err = -ENOMEM;
+ goto out;
+ }
+
+ stats->count = debugfs_create_u64("n", 0400,
+ stats->root,
+ &stats->n);
+ if (!stats->count) {
+ mlx5_core_warn(dev, "failed creating debugfs file\n");
+ err = -ENOMEM;
+ goto out;
+ }
+ }
+ }
+
+ return 0;
+out:
+ debugfs_remove_recursive(dev->priv.cmdif_debugfs);
+ return err;
+}
+
+void mlx5_cmdif_debugfs_cleanup(struct mlx5_core_dev *dev)
+{
+ if (!mlx5_debugfs_root)
+ return;
+
+ debugfs_remove_recursive(dev->priv.cmdif_debugfs);
+}
+
+int mlx5_cq_debugfs_init(struct mlx5_core_dev *dev)
+{
+ if (!mlx5_debugfs_root)
+ return 0;
+
+ dev->priv.cq_debugfs = debugfs_create_dir("CQs", dev->priv.dbg_root);
+ if (!dev->priv.cq_debugfs)
+ return -ENOMEM;
+
+ return 0;
+}
+
+void mlx5_cq_debugfs_cleanup(struct mlx5_core_dev *dev)
+{
+ if (!mlx5_debugfs_root)
+ return;
+
+ debugfs_remove_recursive(dev->priv.cq_debugfs);
+}
+
+static u64 qp_read_field(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp,
+ int index)
+{
+ struct mlx5_query_qp_mbox_out *out;
+ struct mlx5_qp_context *ctx;
+ u64 param = 0;
+ int err;
+ int no_sq;
+
+ out = kzalloc(sizeof(*out), GFP_KERNEL);
+ if (!out)
+ return param;
+
+ err = mlx5_core_qp_query(dev, qp, out, sizeof(*out));
+ if (err) {
+ mlx5_core_warn(dev, "failed to query qp\n");
+ goto out;
+ }
+
+ ctx = &out->ctx;
+ switch (index) {
+ case QP_PID:
+ param = qp->pid;
+ break;
+ case QP_STATE:
+ param = be32_to_cpu(ctx->flags) >> 28;
+ break;
+ case QP_XPORT:
+ param = (be32_to_cpu(ctx->flags) >> 16) & 0xff;
+ break;
+ case QP_MTU:
+ param = ctx->mtu_msgmax >> 5;
+ break;
+ case QP_N_RECV:
+ param = 1 << ((ctx->rq_size_stride >> 3) & 0xf);
+ break;
+ case QP_RECV_SZ:
+ param = 1 << ((ctx->rq_size_stride & 7) + 4);
+ break;
+ case QP_N_SEND:
+ no_sq = be16_to_cpu(ctx->sq_crq_size) >> 15;
+ if (!no_sq)
+ param = 1 << (be16_to_cpu(ctx->sq_crq_size) >> 11);
+ else
+ param = 0;
+ break;
+ case QP_LOG_PG_SZ:
+ param = ((cpu_to_be32(ctx->log_pg_sz_remote_qpn) >> 24) & 0x1f);
+ param += 12;
+ break;
+ case QP_RQPN:
+ param = cpu_to_be32(ctx->log_pg_sz_remote_qpn) & 0xffffff;
+ break;
+ }
+
+out:
+ kfree(out);
+ return param;
+}
+
+static u64 eq_read_field(struct mlx5_core_dev *dev, struct mlx5_eq *eq,
+ int index)
+{
+ struct mlx5_query_eq_mbox_out *out;
+ struct mlx5_eq_context *ctx;
+ u64 param = 0;
+ int err;
+
+ out = kzalloc(sizeof(*out), GFP_KERNEL);
+ if (!out)
+ return param;
+
+ ctx = &out->ctx;
+
+ err = mlx5_core_eq_query(dev, eq, out, sizeof(*out));
+ if (err) {
+ mlx5_core_warn(dev, "failed to query eq\n");
+ goto out;
+ }
+
+ switch (index) {
+ case EQ_NUM_EQES:
+ param = 1 << ((be32_to_cpu(ctx->log_sz_usr_page) >> 24) & 0x1f);
+ break;
+ case EQ_INTR:
+ param = ctx->intr;
+ break;
+ case EQ_LOG_PG_SZ:
+ param = (ctx->log_page_size & 0x1f) + 12;
+ break;
+ }
+
+out:
+ kfree(out);
+ return param;
+}
+
+static u64 cq_read_field(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
+ int index)
+{
+ struct mlx5_query_cq_mbox_out *out;
+ struct mlx5_cq_context *ctx;
+ u64 param = 0;
+ int err;
+
+ out = kzalloc(sizeof(*out), GFP_KERNEL);
+ if (!out)
+ return param;
+
+ ctx = &out->ctx;
+
+ err = mlx5_core_query_cq(dev, cq, out);
+ if (err) {
+ mlx5_core_warn(dev, "failed to query cq\n");
+ goto out;
+ }
+
+ switch (index) {
+ case CQ_PID:
+ param = cq->pid;
+ break;
+ case CQ_NUM_CQES:
+ param = 1 << ((be32_to_cpu(ctx->log_sz_usr_page) >> 24) & 0x1f);
+ break;
+ case CQ_LOG_PG_SZ:
+ param = (ctx->log_pg_sz & 0x1f) + 12;
+ break;
+ }
+
+out:
+ kfree(out);
+ return param;
+}
+
+static ssize_t dbg_read(struct file *filp, char __user *buf, size_t count,
+ loff_t *pos)
+{
+ struct mlx5_field_desc *desc;
+ struct mlx5_rsc_debug *d;
+ char tbuf[18];
+ u64 field;
+ int ret;
+ int err;
+
+ if (*pos)
+ return 0;
+
+ desc = filp->private_data;
+ d = (void *)(desc - desc->i) - sizeof(*d);
+ switch (d->type) {
+ case MLX5_DBG_RSC_QP:
+ field = qp_read_field(d->dev, d->object, desc->i);
+ break;
+
+ case MLX5_DBG_RSC_EQ:
+ field = eq_read_field(d->dev, d->object, desc->i);
+ break;
+
+ case MLX5_DBG_RSC_CQ:
+ field = cq_read_field(d->dev, d->object, desc->i);
+ break;
+
+ default:
+ mlx5_core_warn(d->dev, "invalid resource type %d\n", d->type);
+ return -EINVAL;
+ }
+
+ ret = snprintf(tbuf, sizeof(tbuf), "0x%llx\n", field);
+ if (ret > 0) {
+ err = copy_to_user(buf, tbuf, ret);
+ if (err)
+ return err;
+ }
+
+ *pos += ret;
+ return ret;
+}
+
+static const struct file_operations fops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .read = dbg_read,
+};
+
+static int add_res_tree(struct mlx5_core_dev *dev, enum dbg_rsc_type type,
+ struct dentry *root, struct mlx5_rsc_debug **dbg,
+ int rsn, char **field, int nfile, void *data)
+{
+ struct mlx5_rsc_debug *d;
+ char resn[32];
+ int err;
+ int i;
+
+ d = kzalloc(sizeof(*d) + nfile * sizeof(d->fields[0]), GFP_KERNEL);
+ if (!d)
+ return -ENOMEM;
+
+ d->dev = dev;
+ d->object = data;
+ d->type = type;
+ sprintf(resn, "0x%x", rsn);
+ d->root = debugfs_create_dir(resn, root);
+ if (!d->root) {
+ err = -ENOMEM;
+ goto out_free;
+ }
+
+ for (i = 0; i < nfile; i++) {
+ d->fields[i].i = i;
+ d->fields[i].dent = debugfs_create_file(field[i], 0400,
+ d->root, &d->fields[i],
+ &fops);
+ if (!d->fields[i].dent) {
+ err = -ENOMEM;
+ goto out_rem;
+ }
+ }
+ *dbg = d;
+
+ return 0;
+out_rem:
+ debugfs_remove_recursive(d->root);
+
+out_free:
+ kfree(d);
+ return err;
+}
+
+static void rem_res_tree(struct mlx5_rsc_debug *d)
+{
+ debugfs_remove_recursive(d->root);
+ kfree(d);
+}
+
+int mlx5_debug_qp_add(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp)
+{
+ int err;
+
+ if (!mlx5_debugfs_root)
+ return 0;
+
+ err = add_res_tree(dev, MLX5_DBG_RSC_QP, dev->priv.qp_debugfs,
+ &qp->dbg, qp->qpn, qp_fields,
+ ARRAY_SIZE(qp_fields), qp);
+ if (err)
+ qp->dbg = NULL;
+
+ return err;
+}
+
+void mlx5_debug_qp_remove(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp)
+{
+ if (!mlx5_debugfs_root)
+ return;
+
+ if (qp->dbg)
+ rem_res_tree(qp->dbg);
+}
+
+
+int mlx5_debug_eq_add(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
+{
+ int err;
+
+ if (!mlx5_debugfs_root)
+ return 0;
+
+ err = add_res_tree(dev, MLX5_DBG_RSC_EQ, dev->priv.eq_debugfs,
+ &eq->dbg, eq->eqn, eq_fields,
+ ARRAY_SIZE(eq_fields), eq);
+ if (err)
+ eq->dbg = NULL;
+
+ return err;
+}
+
+void mlx5_debug_eq_remove(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
+{
+ if (!mlx5_debugfs_root)
+ return;
+
+ if (eq->dbg)
+ rem_res_tree(eq->dbg);
+}
+
+int mlx5_debug_cq_add(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
+{
+ int err;
+
+ if (!mlx5_debugfs_root)
+ return 0;
+
+ err = add_res_tree(dev, MLX5_DBG_RSC_CQ, dev->priv.cq_debugfs,
+ &cq->dbg, cq->cqn, cq_fields,
+ ARRAY_SIZE(cq_fields), cq);
+ if (err)
+ cq->dbg = NULL;
+
+ return err;
+}
+
+void mlx5_debug_cq_remove(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
+{
+ if (!mlx5_debugfs_root)
+ return;
+
+ if (cq->dbg)
+ rem_res_tree(cq->dbg);
+}
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include "mlx5_core.h"
+
+enum {
+ MLX5_EQE_SIZE = sizeof(struct mlx5_eqe),
+ MLX5_EQE_OWNER_INIT_VAL = 0x1,
+};
+
+enum {
+ MLX5_EQ_STATE_ARMED = 0x9,
+ MLX5_EQ_STATE_FIRED = 0xa,
+ MLX5_EQ_STATE_ALWAYS_ARMED = 0xb,
+};
+
+enum {
+ MLX5_NUM_SPARE_EQE = 0x80,
+ MLX5_NUM_ASYNC_EQE = 0x100,
+ MLX5_NUM_CMD_EQE = 32,
+};
+
+enum {
+ MLX5_EQ_DOORBEL_OFFSET = 0x40,
+};
+
+#define MLX5_ASYNC_EVENT_MASK ((1ull << MLX5_EVENT_TYPE_PATH_MIG) | \
+ (1ull << MLX5_EVENT_TYPE_COMM_EST) | \
+ (1ull << MLX5_EVENT_TYPE_SQ_DRAINED) | \
+ (1ull << MLX5_EVENT_TYPE_CQ_ERROR) | \
+ (1ull << MLX5_EVENT_TYPE_WQ_CATAS_ERROR) | \
+ (1ull << MLX5_EVENT_TYPE_PATH_MIG_FAILED) | \
+ (1ull << MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR) | \
+ (1ull << MLX5_EVENT_TYPE_WQ_ACCESS_ERROR) | \
+ (1ull << MLX5_EVENT_TYPE_PORT_CHANGE) | \
+ (1ull << MLX5_EVENT_TYPE_SRQ_CATAS_ERROR) | \
+ (1ull << MLX5_EVENT_TYPE_SRQ_LAST_WQE) | \
+ (1ull << MLX5_EVENT_TYPE_SRQ_RQ_LIMIT))
+
+struct map_eq_in {
+ u64 mask;
+ u32 reserved;
+ u32 unmap_eqn;
+};
+
+struct cre_des_eq {
+ u8 reserved[15];
+ u8 eqn;
+};
+
+static int mlx5_cmd_destroy_eq(struct mlx5_core_dev *dev, u8 eqn)
+{
+ struct mlx5_destroy_eq_mbox_in in;
+ struct mlx5_destroy_eq_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_EQ);
+ in.eqn = eqn;
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (!err)
+ goto ex;
+
+ if (out.hdr.status)
+ err = mlx5_cmd_status_to_err(&out.hdr);
+
+ex:
+ return err;
+}
+
+static struct mlx5_eqe *get_eqe(struct mlx5_eq *eq, u32 entry)
+{
+ return mlx5_buf_offset(&eq->buf, entry * MLX5_EQE_SIZE);
+}
+
+static struct mlx5_eqe *next_eqe_sw(struct mlx5_eq *eq)
+{
+ struct mlx5_eqe *eqe = get_eqe(eq, eq->cons_index & (eq->nent - 1));
+
+ return ((eqe->owner & 1) ^ !!(eq->cons_index & eq->nent)) ? NULL : eqe;
+}
+
+static const char *eqe_type_str(u8 type)
+{
+ switch (type) {
+ case MLX5_EVENT_TYPE_COMP:
+ return "MLX5_EVENT_TYPE_COMP";
+ case MLX5_EVENT_TYPE_PATH_MIG:
+ return "MLX5_EVENT_TYPE_PATH_MIG";
+ case MLX5_EVENT_TYPE_COMM_EST:
+ return "MLX5_EVENT_TYPE_COMM_EST";
+ case MLX5_EVENT_TYPE_SQ_DRAINED:
+ return "MLX5_EVENT_TYPE_SQ_DRAINED";
+ case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
+ return "MLX5_EVENT_TYPE_SRQ_LAST_WQE";
+ case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT:
+ return "MLX5_EVENT_TYPE_SRQ_RQ_LIMIT";
+ case MLX5_EVENT_TYPE_CQ_ERROR:
+ return "MLX5_EVENT_TYPE_CQ_ERROR";
+ case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
+ return "MLX5_EVENT_TYPE_WQ_CATAS_ERROR";
+ case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
+ return "MLX5_EVENT_TYPE_PATH_MIG_FAILED";
+ case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
+ return "MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR";
+ case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
+ return "MLX5_EVENT_TYPE_WQ_ACCESS_ERROR";
+ case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR:
+ return "MLX5_EVENT_TYPE_SRQ_CATAS_ERROR";
+ case MLX5_EVENT_TYPE_INTERNAL_ERROR:
+ return "MLX5_EVENT_TYPE_INTERNAL_ERROR";
+ case MLX5_EVENT_TYPE_PORT_CHANGE:
+ return "MLX5_EVENT_TYPE_PORT_CHANGE";
+ case MLX5_EVENT_TYPE_GPIO_EVENT:
+ return "MLX5_EVENT_TYPE_GPIO_EVENT";
+ case MLX5_EVENT_TYPE_REMOTE_CONFIG:
+ return "MLX5_EVENT_TYPE_REMOTE_CONFIG";
+ case MLX5_EVENT_TYPE_DB_BF_CONGESTION:
+ return "MLX5_EVENT_TYPE_DB_BF_CONGESTION";
+ case MLX5_EVENT_TYPE_STALL_EVENT:
+ return "MLX5_EVENT_TYPE_STALL_EVENT";
+ case MLX5_EVENT_TYPE_CMD:
+ return "MLX5_EVENT_TYPE_CMD";
+ case MLX5_EVENT_TYPE_PAGE_REQUEST:
+ return "MLX5_EVENT_TYPE_PAGE_REQUEST";
+ default:
+ return "Unrecognized event";
+ }
+}
+
+static enum mlx5_dev_event port_subtype_event(u8 subtype)
+{
+ switch (subtype) {
+ case MLX5_PORT_CHANGE_SUBTYPE_DOWN:
+ return MLX5_DEV_EVENT_PORT_DOWN;
+ case MLX5_PORT_CHANGE_SUBTYPE_ACTIVE:
+ return MLX5_DEV_EVENT_PORT_UP;
+ case MLX5_PORT_CHANGE_SUBTYPE_INITIALIZED:
+ return MLX5_DEV_EVENT_PORT_INITIALIZED;
+ case MLX5_PORT_CHANGE_SUBTYPE_LID:
+ return MLX5_DEV_EVENT_LID_CHANGE;
+ case MLX5_PORT_CHANGE_SUBTYPE_PKEY:
+ return MLX5_DEV_EVENT_PKEY_CHANGE;
+ case MLX5_PORT_CHANGE_SUBTYPE_GUID:
+ return MLX5_DEV_EVENT_GUID_CHANGE;
+ case MLX5_PORT_CHANGE_SUBTYPE_CLIENT_REREG:
+ return MLX5_DEV_EVENT_CLIENT_REREG;
+ }
+ return -1;
+}
+
+static void eq_update_ci(struct mlx5_eq *eq, int arm)
+{
+ __be32 __iomem *addr = eq->doorbell + (arm ? 0 : 2);
+ u32 val = (eq->cons_index & 0xffffff) | (eq->eqn << 24);
+ __raw_writel((__force u32) cpu_to_be32(val), addr);
+ /* We still want ordering, just not swabbing, so add a barrier */
+ mb();
+}
+
+static int mlx5_eq_int(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
+{
+ struct mlx5_eqe *eqe;
+ int eqes_found = 0;
+ int set_ci = 0;
+ u32 cqn;
+ u32 srqn;
+ u8 port;
+
+ while ((eqe = next_eqe_sw(eq))) {
+ /*
+ * Make sure we read EQ entry contents after we've
+ * checked the ownership bit.
+ */
+ rmb();
+
+ mlx5_core_dbg(eq->dev, "eqn %d, eqe type %s\n", eq->eqn, eqe_type_str(eqe->type));
+ switch (eqe->type) {
+ case MLX5_EVENT_TYPE_COMP:
+ cqn = be32_to_cpu(eqe->data.comp.cqn) & 0xffffff;
+ mlx5_cq_completion(dev, cqn);
+ break;
+
+ case MLX5_EVENT_TYPE_PATH_MIG:
+ case MLX5_EVENT_TYPE_COMM_EST:
+ case MLX5_EVENT_TYPE_SQ_DRAINED:
+ case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
+ case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
+ case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
+ case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
+ case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
+ mlx5_core_dbg(dev, "event %s(%d) arrived\n",
+ eqe_type_str(eqe->type), eqe->type);
+ mlx5_qp_event(dev, be32_to_cpu(eqe->data.qp_srq.qp_srq_n) & 0xffffff,
+ eqe->type);
+ break;
+
+ case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT:
+ case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR:
+ srqn = be32_to_cpu(eqe->data.qp_srq.qp_srq_n) & 0xffffff;
+ mlx5_core_dbg(dev, "SRQ event %s(%d): srqn 0x%x\n",
+ eqe_type_str(eqe->type), eqe->type, srqn);
+ mlx5_srq_event(dev, srqn, eqe->type);
+ break;
+
+ case MLX5_EVENT_TYPE_CMD:
+ mlx5_cmd_comp_handler(dev, be32_to_cpu(eqe->data.cmd.vector));
+ break;
+
+ case MLX5_EVENT_TYPE_PORT_CHANGE:
+ port = (eqe->data.port.port >> 4) & 0xf;
+ switch (eqe->sub_type) {
+ case MLX5_PORT_CHANGE_SUBTYPE_DOWN:
+ case MLX5_PORT_CHANGE_SUBTYPE_ACTIVE:
+ case MLX5_PORT_CHANGE_SUBTYPE_LID:
+ case MLX5_PORT_CHANGE_SUBTYPE_PKEY:
+ case MLX5_PORT_CHANGE_SUBTYPE_GUID:
+ case MLX5_PORT_CHANGE_SUBTYPE_CLIENT_REREG:
+ case MLX5_PORT_CHANGE_SUBTYPE_INITIALIZED:
+ dev->event(dev, port_subtype_event(eqe->sub_type), &port);
+ break;
+ default:
+ mlx5_core_warn(dev, "Port event with unrecognized subtype: port %d, sub_type %d\n",
+ port, eqe->sub_type);
+ }
+ break;
+ case MLX5_EVENT_TYPE_CQ_ERROR:
+ cqn = be32_to_cpu(eqe->data.cq_err.cqn) & 0xffffff;
+ mlx5_core_warn(dev, "CQ error on CQN 0x%x, syndrom 0x%x\n",
+ cqn, eqe->data.cq_err.syndrome);
+ mlx5_cq_event(dev, cqn, eqe->type);
+ break;
+
+ case MLX5_EVENT_TYPE_PAGE_REQUEST:
+ {
+ u16 func_id = be16_to_cpu(eqe->data.req_pages.func_id);
+ s16 npages = be16_to_cpu(eqe->data.req_pages.num_pages);
+
+ mlx5_core_dbg(dev, "page request for func 0x%x, napges %d\n", func_id, npages);
+ mlx5_core_req_pages_handler(dev, func_id, npages);
+ }
+ break;
+
+
+ default:
+ mlx5_core_warn(dev, "Unhandled event 0x%x on EQ 0x%x\n", eqe->type, eq->eqn);
+ break;
+ }
+
+ ++eq->cons_index;
+ eqes_found = 1;
+ ++set_ci;
+
+ /* The HCA will think the queue has overflowed if we
+ * don't tell it we've been processing events. We
+ * create our EQs with MLX5_NUM_SPARE_EQE extra
+ * entries, so we must update our consumer index at
+ * least that often.
+ */
+ if (unlikely(set_ci >= MLX5_NUM_SPARE_EQE)) {
+ eq_update_ci(eq, 0);
+ set_ci = 0;
+ }
+ }
+
+ eq_update_ci(eq, 1);
+
+ return eqes_found;
+}
+
+static irqreturn_t mlx5_msix_handler(int irq, void *eq_ptr)
+{
+ struct mlx5_eq *eq = eq_ptr;
+ struct mlx5_core_dev *dev = eq->dev;
+
+ mlx5_eq_int(dev, eq);
+
+ /* MSI-X vectors always belong to us */
+ return IRQ_HANDLED;
+}
+
+static void init_eq_buf(struct mlx5_eq *eq)
+{
+ struct mlx5_eqe *eqe;
+ int i;
+
+ for (i = 0; i < eq->nent; i++) {
+ eqe = get_eqe(eq, i);
+ eqe->owner = MLX5_EQE_OWNER_INIT_VAL;
+ }
+}
+
+int mlx5_create_map_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq, u8 vecidx,
+ int nent, u64 mask, const char *name, struct mlx5_uar *uar)
+{
+ struct mlx5_eq_table *table = &dev->priv.eq_table;
+ struct mlx5_create_eq_mbox_in *in;
+ struct mlx5_create_eq_mbox_out out;
+ int err;
+ int inlen;
+
+ eq->nent = roundup_pow_of_two(nent + MLX5_NUM_SPARE_EQE);
+ err = mlx5_buf_alloc(dev, eq->nent * MLX5_EQE_SIZE, 2 * PAGE_SIZE,
+ &eq->buf);
+ if (err)
+ return err;
+
+ init_eq_buf(eq);
+
+ inlen = sizeof(*in) + sizeof(in->pas[0]) * eq->buf.npages;
+ in = mlx5_vzalloc(inlen);
+ if (!in) {
+ err = -ENOMEM;
+ goto err_buf;
+ }
+ memset(&out, 0, sizeof(out));
+
+ mlx5_fill_page_array(&eq->buf, in->pas);
+
+ in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_EQ);
+ in->ctx.log_sz_usr_page = cpu_to_be32(ilog2(eq->nent) << 24 | uar->index);
+ in->ctx.intr = vecidx;
+ in->ctx.log_page_size = PAGE_SHIFT - 12;
+ in->events_mask = cpu_to_be64(mask);
+
+ err = mlx5_cmd_exec(dev, in, inlen, &out, sizeof(out));
+ if (err)
+ goto err_in;
+
+ if (out.hdr.status) {
+ err = mlx5_cmd_status_to_err(&out.hdr);
+ goto err_in;
+ }
+
+ eq->eqn = out.eq_number;
+ err = request_irq(table->msix_arr[vecidx].vector, mlx5_msix_handler, 0,
+ name, eq);
+ if (err)
+ goto err_eq;
+
+ eq->irqn = vecidx;
+ eq->dev = dev;
+ eq->doorbell = uar->map + MLX5_EQ_DOORBEL_OFFSET;
+
+ err = mlx5_debug_eq_add(dev, eq);
+ if (err)
+ goto err_irq;
+
+ /* EQs are created in ARMED state
+ */
+ eq_update_ci(eq, 1);
+
+ mlx5_vfree(in);
+ return 0;
+
+err_irq:
+ free_irq(table->msix_arr[vecidx].vector, eq);
+
+err_eq:
+ mlx5_cmd_destroy_eq(dev, eq->eqn);
+
+err_in:
+ mlx5_vfree(in);
+
+err_buf:
+ mlx5_buf_free(dev, &eq->buf);
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_create_map_eq);
+
+int mlx5_destroy_unmap_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
+{
+ struct mlx5_eq_table *table = &dev->priv.eq_table;
+ int err;
+
+ mlx5_debug_eq_remove(dev, eq);
+ free_irq(table->msix_arr[eq->irqn].vector, eq);
+ err = mlx5_cmd_destroy_eq(dev, eq->eqn);
+ if (err)
+ mlx5_core_warn(dev, "failed to destroy a previously created eq: eqn %d\n",
+ eq->eqn);
+ mlx5_buf_free(dev, &eq->buf);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_destroy_unmap_eq);
+
+int mlx5_eq_init(struct mlx5_core_dev *dev)
+{
+ int err;
+
+ spin_lock_init(&dev->priv.eq_table.lock);
+
+ err = mlx5_eq_debugfs_init(dev);
+
+ return err;
+}
+
+
+void mlx5_eq_cleanup(struct mlx5_core_dev *dev)
+{
+ mlx5_eq_debugfs_cleanup(dev);
+}
+
+int mlx5_start_eqs(struct mlx5_core_dev *dev)
+{
+ struct mlx5_eq_table *table = &dev->priv.eq_table;
+ int err;
+
+ err = mlx5_create_map_eq(dev, &table->cmd_eq, MLX5_EQ_VEC_CMD,
+ MLX5_NUM_CMD_EQE, 1ull << MLX5_EVENT_TYPE_CMD,
+ "mlx5_cmd_eq", &dev->priv.uuari.uars[0]);
+ if (err) {
+ mlx5_core_warn(dev, "failed to create cmd EQ %d\n", err);
+ return err;
+ }
+
+ mlx5_cmd_use_events(dev);
+
+ err = mlx5_create_map_eq(dev, &table->async_eq, MLX5_EQ_VEC_ASYNC,
+ MLX5_NUM_ASYNC_EQE, MLX5_ASYNC_EVENT_MASK,
+ "mlx5_async_eq", &dev->priv.uuari.uars[0]);
+ if (err) {
+ mlx5_core_warn(dev, "failed to create async EQ %d\n", err);
+ goto err1;
+ }
+
+ err = mlx5_create_map_eq(dev, &table->pages_eq,
+ MLX5_EQ_VEC_PAGES,
+ dev->caps.max_vf + 1,
+ 1 << MLX5_EVENT_TYPE_PAGE_REQUEST, "mlx5_pages_eq",
+ &dev->priv.uuari.uars[0]);
+ if (err) {
+ mlx5_core_warn(dev, "failed to create pages EQ %d\n", err);
+ goto err2;
+ }
+
+ return err;
+
+err2:
+ mlx5_destroy_unmap_eq(dev, &table->async_eq);
+
+err1:
+ mlx5_cmd_use_polling(dev);
+ mlx5_destroy_unmap_eq(dev, &table->cmd_eq);
+ return err;
+}
+
+int mlx5_stop_eqs(struct mlx5_core_dev *dev)
+{
+ struct mlx5_eq_table *table = &dev->priv.eq_table;
+ int err;
+
+ err = mlx5_destroy_unmap_eq(dev, &table->pages_eq);
+ if (err)
+ return err;
+
+ mlx5_destroy_unmap_eq(dev, &table->async_eq);
+ mlx5_cmd_use_polling(dev);
+
+ err = mlx5_destroy_unmap_eq(dev, &table->cmd_eq);
+ if (err)
+ mlx5_cmd_use_events(dev);
+
+ return err;
+}
+
+int mlx5_core_eq_query(struct mlx5_core_dev *dev, struct mlx5_eq *eq,
+ struct mlx5_query_eq_mbox_out *out, int outlen)
+{
+ struct mlx5_query_eq_mbox_in in;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(out, 0, outlen);
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_EQ);
+ in.eqn = eq->eqn;
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), out, outlen);
+ if (err)
+ return err;
+
+ if (out->hdr.status)
+ err = mlx5_cmd_status_to_err(&out->hdr);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_core_eq_query);
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include <linux/module.h>
+#include "mlx5_core.h"
+
+int mlx5_cmd_query_adapter(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd_query_adapter_mbox_out *out;
+ struct mlx5_cmd_query_adapter_mbox_in in;
+ int err;
+
+ out = kzalloc(sizeof(*out), GFP_KERNEL);
+ if (!out)
+ return -ENOMEM;
+
+ memset(&in, 0, sizeof(in));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_ADAPTER);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), out, sizeof(*out));
+ if (err)
+ goto out_out;
+
+ if (out->hdr.status) {
+ err = mlx5_cmd_status_to_err(&out->hdr);
+ goto out_out;
+ }
+
+ memcpy(dev->board_id, out->vsd_psid, sizeof(out->vsd_psid));
+
+out_out:
+ kfree(out);
+
+ return err;
+}
+
+int mlx5_cmd_query_hca_cap(struct mlx5_core_dev *dev,
+ struct mlx5_caps *caps)
+{
+ struct mlx5_cmd_query_hca_cap_mbox_out *out;
+ struct mlx5_cmd_query_hca_cap_mbox_in in;
+ struct mlx5_query_special_ctxs_mbox_out ctx_out;
+ struct mlx5_query_special_ctxs_mbox_in ctx_in;
+ int err;
+ u16 t16;
+
+ out = kzalloc(sizeof(*out), GFP_KERNEL);
+ if (!out)
+ return -ENOMEM;
+
+ memset(&in, 0, sizeof(in));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_HCA_CAP);
+ in.hdr.opmod = cpu_to_be16(0x1);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), out, sizeof(*out));
+ if (err)
+ goto out_out;
+
+ if (out->hdr.status) {
+ err = mlx5_cmd_status_to_err(&out->hdr);
+ goto out_out;
+ }
+
+
+ caps->log_max_eq = out->hca_cap.log_max_eq & 0xf;
+ caps->max_cqes = 1 << out->hca_cap.log_max_cq_sz;
+ caps->max_wqes = 1 << out->hca_cap.log_max_qp_sz;
+ caps->max_sq_desc_sz = be16_to_cpu(out->hca_cap.max_desc_sz_sq);
+ caps->max_rq_desc_sz = be16_to_cpu(out->hca_cap.max_desc_sz_rq);
+ caps->flags = be64_to_cpu(out->hca_cap.flags);
+ caps->stat_rate_support = be16_to_cpu(out->hca_cap.stat_rate_support);
+ caps->log_max_msg = out->hca_cap.log_max_msg & 0x1f;
+ caps->num_ports = out->hca_cap.num_ports & 0xf;
+ caps->log_max_cq = out->hca_cap.log_max_cq & 0x1f;
+ if (caps->num_ports > MLX5_MAX_PORTS) {
+ mlx5_core_err(dev, "device has %d ports while the driver supports max %d ports\n",
+ caps->num_ports, MLX5_MAX_PORTS);
+ err = -EINVAL;
+ goto out_out;
+ }
+ caps->log_max_qp = out->hca_cap.log_max_qp & 0x1f;
+ caps->log_max_mkey = out->hca_cap.log_max_mkey & 0x3f;
+ caps->log_max_pd = out->hca_cap.log_max_pd & 0x1f;
+ caps->log_max_srq = out->hca_cap.log_max_srqs & 0x1f;
+ caps->local_ca_ack_delay = out->hca_cap.local_ca_ack_delay & 0x1f;
+ caps->log_max_mcg = out->hca_cap.log_max_mcg;
+ caps->max_qp_mcg = be16_to_cpu(out->hca_cap.max_qp_mcg);
+ caps->max_ra_res_qp = 1 << (out->hca_cap.log_max_ra_res_qp & 0x3f);
+ caps->max_ra_req_qp = 1 << (out->hca_cap.log_max_ra_req_qp & 0x3f);
+ caps->max_srq_wqes = 1 << out->hca_cap.log_max_srq_sz;
+ t16 = be16_to_cpu(out->hca_cap.bf_log_bf_reg_size);
+ if (t16 & 0x8000) {
+ caps->bf_reg_size = 1 << (t16 & 0x1f);
+ caps->bf_regs_per_page = MLX5_BF_REGS_PER_PAGE;
+ } else {
+ caps->bf_reg_size = 0;
+ caps->bf_regs_per_page = 0;
+ }
+ caps->min_page_sz = ~(u32)((1 << out->hca_cap.log_pg_sz) - 1);
+
+ memset(&ctx_in, 0, sizeof(ctx_in));
+ memset(&ctx_out, 0, sizeof(ctx_out));
+ ctx_in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
+ err = mlx5_cmd_exec(dev, &ctx_in, sizeof(ctx_in),
+ &ctx_out, sizeof(ctx_out));
+ if (err)
+ goto out_out;
+
+ if (ctx_out.hdr.status)
+ err = mlx5_cmd_status_to_err(&ctx_out.hdr);
+
+ caps->reserved_lkey = be32_to_cpu(ctx_out.reserved_lkey);
+
+out_out:
+ kfree(out);
+
+ return err;
+}
+
+int mlx5_cmd_init_hca(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd_init_hca_mbox_in in;
+ struct mlx5_cmd_init_hca_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_INIT_HCA);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ err = mlx5_cmd_status_to_err(&out.hdr);
+
+ return err;
+}
+
+int mlx5_cmd_teardown_hca(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd_teardown_hca_mbox_in in;
+ struct mlx5_cmd_teardown_hca_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_TEARDOWN_HCA);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ err = mlx5_cmd_status_to_err(&out.hdr);
+
+ return err;
+}
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/random.h>
+#include <linux/vmalloc.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include "mlx5_core.h"
+
+enum {
+ MLX5_HEALTH_POLL_INTERVAL = 2 * HZ,
+ MAX_MISSES = 3,
+};
+
+enum {
+ MLX5_HEALTH_SYNDR_FW_ERR = 0x1,
+ MLX5_HEALTH_SYNDR_IRISC_ERR = 0x7,
+ MLX5_HEALTH_SYNDR_CRC_ERR = 0x9,
+ MLX5_HEALTH_SYNDR_FETCH_PCI_ERR = 0xa,
+ MLX5_HEALTH_SYNDR_HW_FTL_ERR = 0xb,
+ MLX5_HEALTH_SYNDR_ASYNC_EQ_OVERRUN_ERR = 0xc,
+ MLX5_HEALTH_SYNDR_EQ_ERR = 0xd,
+ MLX5_HEALTH_SYNDR_FFSER_ERR = 0xf,
+};
+
+static DEFINE_SPINLOCK(health_lock);
+
+static LIST_HEAD(health_list);
+static struct work_struct health_work;
+
+static health_handler_t reg_handler;
+int mlx5_register_health_report_handler(health_handler_t handler)
+{
+ spin_lock_irq(&health_lock);
+ if (reg_handler) {
+ spin_unlock_irq(&health_lock);
+ return -EEXIST;
+ }
+ reg_handler = handler;
+ spin_unlock_irq(&health_lock);
+
+ return 0;
+}
+EXPORT_SYMBOL(mlx5_register_health_report_handler);
+
+void mlx5_unregister_health_report_handler(void)
+{
+ spin_lock_irq(&health_lock);
+ reg_handler = NULL;
+ spin_unlock_irq(&health_lock);
+}
+EXPORT_SYMBOL(mlx5_unregister_health_report_handler);
+
+static void health_care(struct work_struct *work)
+{
+ struct mlx5_core_health *health, *n;
+ struct mlx5_core_dev *dev;
+ struct mlx5_priv *priv;
+ LIST_HEAD(tlist);
+
+ spin_lock_irq(&health_lock);
+ list_splice_init(&health_list, &tlist);
+
+ spin_unlock_irq(&health_lock);
+
+ list_for_each_entry_safe(health, n, &tlist, list) {
+ priv = container_of(health, struct mlx5_priv, health);
+ dev = container_of(priv, struct mlx5_core_dev, priv);
+ mlx5_core_warn(dev, "handling bad device here\n");
+ spin_lock_irq(&health_lock);
+ if (reg_handler)
+ reg_handler(dev->pdev, health->health,
+ sizeof(health->health));
+
+ list_del_init(&health->list);
+ spin_unlock_irq(&health_lock);
+ }
+}
+
+static const char *hsynd_str(u8 synd)
+{
+ switch (synd) {
+ case MLX5_HEALTH_SYNDR_FW_ERR:
+ return "firmware internal error";
+ case MLX5_HEALTH_SYNDR_IRISC_ERR:
+ return "irisc not responding";
+ case MLX5_HEALTH_SYNDR_CRC_ERR:
+ return "firmware CRC error";
+ case MLX5_HEALTH_SYNDR_FETCH_PCI_ERR:
+ return "ICM fetch PCI error";
+ case MLX5_HEALTH_SYNDR_HW_FTL_ERR:
+ return "HW fatal error\n";
+ case MLX5_HEALTH_SYNDR_ASYNC_EQ_OVERRUN_ERR:
+ return "async EQ buffer overrun";
+ case MLX5_HEALTH_SYNDR_EQ_ERR:
+ return "EQ error";
+ case MLX5_HEALTH_SYNDR_FFSER_ERR:
+ return "FFSER error";
+ default:
+ return "unrecognized error";
+ }
+}
+
+static void print_health_info(struct mlx5_core_dev *dev)
+{
+ struct mlx5_core_health *health = &dev->priv.health;
+ struct health_buffer __iomem *h = health->health;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(h->assert_var); i++)
+ pr_info("assert_var[%d] 0x%08x\n", i, be32_to_cpu(h->assert_var[i]));
+
+ pr_info("assert_exit_ptr 0x%08x\n", be32_to_cpu(h->assert_exit_ptr));
+ pr_info("assert_callra 0x%08x\n", be32_to_cpu(h->assert_callra));
+ pr_info("fw_ver 0x%08x\n", be32_to_cpu(h->fw_ver));
+ pr_info("hw_id 0x%08x\n", be32_to_cpu(h->hw_id));
+ pr_info("irisc_index %d\n", h->irisc_index);
+ pr_info("synd 0x%x: %s\n", h->synd, hsynd_str(h->synd));
+ pr_info("ext_sync 0x%04x\n", be16_to_cpu(h->ext_sync));
+}
+
+static void poll_health(unsigned long data)
+{
+ struct mlx5_core_dev *dev = (struct mlx5_core_dev *)data;
+ struct mlx5_core_health *health = &dev->priv.health;
+ unsigned long next;
+ u32 count;
+
+ count = ioread32be(health->health_counter);
+ if (count == health->prev)
+ ++health->miss_counter;
+ else
+ health->miss_counter = 0;
+
+ health->prev = count;
+ if (health->miss_counter == MAX_MISSES) {
+ mlx5_core_err(dev, "device's health compromised\n");
+ print_health_info(dev);
+ spin_lock_irq(&health_lock);
+ list_add_tail(&health->list, &health_list);
+ spin_unlock_irq(&health_lock);
+
+ queue_work(mlx5_core_wq, &health_work);
+ } else {
+ get_random_bytes(&next, sizeof(next));
+ next %= HZ;
+ next += jiffies + MLX5_HEALTH_POLL_INTERVAL;
+ mod_timer(&health->timer, next);
+ }
+}
+
+void mlx5_start_health_poll(struct mlx5_core_dev *dev)
+{
+ struct mlx5_core_health *health = &dev->priv.health;
+
+ INIT_LIST_HEAD(&health->list);
+ init_timer(&health->timer);
+ health->health = &dev->iseg->health;
+ health->health_counter = &dev->iseg->health_counter;
+
+ health->timer.data = (unsigned long)dev;
+ health->timer.function = poll_health;
+ health->timer.expires = round_jiffies(jiffies + MLX5_HEALTH_POLL_INTERVAL);
+ add_timer(&health->timer);
+}
+
+void mlx5_stop_health_poll(struct mlx5_core_dev *dev)
+{
+ struct mlx5_core_health *health = &dev->priv.health;
+
+ del_timer_sync(&health->timer);
+
+ spin_lock_irq(&health_lock);
+ if (!list_empty(&health->list))
+ list_del_init(&health->list);
+ spin_unlock_irq(&health_lock);
+}
+
+void mlx5_health_cleanup(void)
+{
+}
+
+void __init mlx5_health_init(void)
+{
+ INIT_WORK(&health_work, health_care);
+}
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include "mlx5_core.h"
+
+int mlx5_core_mad_ifc(struct mlx5_core_dev *dev, void *inb, void *outb,
+ u16 opmod, int port)
+{
+ struct mlx5_mad_ifc_mbox_in *in = NULL;
+ struct mlx5_mad_ifc_mbox_out *out = NULL;
+ int err;
+
+ in = kzalloc(sizeof(*in), GFP_KERNEL);
+ if (!in)
+ return -ENOMEM;
+
+ out = kzalloc(sizeof(*out), GFP_KERNEL);
+ if (!out) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_MAD_IFC);
+ in->hdr.opmod = cpu_to_be16(opmod);
+ in->port = port;
+
+ memcpy(in->data, inb, sizeof(in->data));
+
+ err = mlx5_cmd_exec(dev, in, sizeof(*in), out, sizeof(*out));
+ if (err)
+ goto out;
+
+ if (out->hdr.status) {
+ err = mlx5_cmd_status_to_err(&out->hdr);
+ goto out;
+ }
+
+ memcpy(outb, out->data, sizeof(out->data));
+
+out:
+ kfree(out);
+ kfree(in);
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_core_mad_ifc);
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <asm-generic/kmap_types.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <linux/io-mapping.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cq.h>
+#include <linux/mlx5/qp.h>
+#include <linux/mlx5/srq.h>
+#include <linux/debugfs.h>
+#include "mlx5_core.h"
+
+#define DRIVER_NAME "mlx5_core"
+#define DRIVER_VERSION "1.0"
+#define DRIVER_RELDATE "June 2013"
+
+MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>");
+MODULE_DESCRIPTION("Mellanox ConnectX-IB HCA core library");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_VERSION(DRIVER_VERSION);
+
+int mlx5_core_debug_mask;
+module_param_named(debug_mask, mlx5_core_debug_mask, int, 0644);
+MODULE_PARM_DESC(debug_mask, "debug mask: 1 = dump cmd data, 2 = dump cmd exec time, 3 = both. Default=0");
+
+struct workqueue_struct *mlx5_core_wq;
+
+static int set_dma_caps(struct pci_dev *pdev)
+{
+ int err;
+
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
+ if (err) {
+ dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n");
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (err) {
+ dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n");
+ return err;
+ }
+ }
+
+ err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
+ if (err) {
+ dev_warn(&pdev->dev,
+ "Warning: couldn't set 64-bit consistent PCI DMA mask.\n");
+ err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (err) {
+ dev_err(&pdev->dev,
+ "Can't set consistent PCI DMA mask, aborting.\n");
+ return err;
+ }
+ }
+
+ dma_set_max_seg_size(&pdev->dev, 2u * 1024 * 1024 * 1024);
+ return err;
+}
+
+static int request_bar(struct pci_dev *pdev)
+{
+ int err = 0;
+
+ if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
+ dev_err(&pdev->dev, "Missing registers BAR, aborting.\n");
+ return -ENODEV;
+ }
+
+ err = pci_request_regions(pdev, DRIVER_NAME);
+ if (err)
+ dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n");
+
+ return err;
+}
+
+static void release_bar(struct pci_dev *pdev)
+{
+ pci_release_regions(pdev);
+}
+
+static int mlx5_enable_msix(struct mlx5_core_dev *dev)
+{
+ struct mlx5_eq_table *table = &dev->priv.eq_table;
+ int num_eqs = 1 << dev->caps.log_max_eq;
+ int nvec;
+ int err;
+ int i;
+
+ nvec = dev->caps.num_ports * num_online_cpus() + MLX5_EQ_VEC_COMP_BASE;
+ nvec = min_t(int, nvec, num_eqs);
+ if (nvec <= MLX5_EQ_VEC_COMP_BASE)
+ return -ENOMEM;
+
+ table->msix_arr = kzalloc(nvec * sizeof(*table->msix_arr), GFP_KERNEL);
+ if (!table->msix_arr)
+ return -ENOMEM;
+
+ for (i = 0; i < nvec; i++)
+ table->msix_arr[i].entry = i;
+
+retry:
+ table->num_comp_vectors = nvec - MLX5_EQ_VEC_COMP_BASE;
+ err = pci_enable_msix(dev->pdev, table->msix_arr, nvec);
+ if (err <= 0) {
+ return err;
+ } else if (err > 2) {
+ nvec = err;
+ goto retry;
+ }
+
+ mlx5_core_dbg(dev, "received %d MSI vectors out of %d requested\n", err, nvec);
+
+ return 0;
+}
+
+static void mlx5_disable_msix(struct mlx5_core_dev *dev)
+{
+ struct mlx5_eq_table *table = &dev->priv.eq_table;
+
+ pci_disable_msix(dev->pdev);
+ kfree(table->msix_arr);
+}
+
+struct mlx5_reg_host_endianess {
+ u8 he;
+ u8 rsvd[15];
+};
+
+static int handle_hca_cap(struct mlx5_core_dev *dev)
+{
+ struct mlx5_cmd_query_hca_cap_mbox_out *query_out = NULL;
+ struct mlx5_cmd_set_hca_cap_mbox_in *set_ctx = NULL;
+ struct mlx5_cmd_query_hca_cap_mbox_in query_ctx;
+ struct mlx5_cmd_set_hca_cap_mbox_out set_out;
+ struct mlx5_profile *prof = dev->profile;
+ u64 flags;
+ int csum = 1;
+ int err;
+
+ memset(&query_ctx, 0, sizeof(query_ctx));
+ query_out = kzalloc(sizeof(*query_out), GFP_KERNEL);
+ if (!query_out)
+ return -ENOMEM;
+
+ set_ctx = kzalloc(sizeof(*set_ctx), GFP_KERNEL);
+ if (!set_ctx) {
+ err = -ENOMEM;
+ goto query_ex;
+ }
+
+ query_ctx.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_HCA_CAP);
+ query_ctx.hdr.opmod = cpu_to_be16(0x1);
+ err = mlx5_cmd_exec(dev, &query_ctx, sizeof(query_ctx),
+ query_out, sizeof(*query_out));
+ if (err)
+ goto query_ex;
+
+ err = mlx5_cmd_status_to_err(&query_out->hdr);
+ if (err) {
+ mlx5_core_warn(dev, "query hca cap failed, %d\n", err);
+ goto query_ex;
+ }
+
+ memcpy(&set_ctx->hca_cap, &query_out->hca_cap,
+ sizeof(set_ctx->hca_cap));
+
+ if (prof->mask & MLX5_PROF_MASK_CMDIF_CSUM) {
+ csum = !!prof->cmdif_csum;
+ flags = be64_to_cpu(set_ctx->hca_cap.flags);
+ if (csum)
+ flags |= MLX5_DEV_CAP_FLAG_CMDIF_CSUM;
+ else
+ flags &= ~MLX5_DEV_CAP_FLAG_CMDIF_CSUM;
+
+ set_ctx->hca_cap.flags = cpu_to_be64(flags);
+ }
+
+ if (dev->profile->mask & MLX5_PROF_MASK_QP_SIZE)
+ set_ctx->hca_cap.log_max_qp = dev->profile->log_max_qp;
+
+ memset(&set_out, 0, sizeof(set_out));
+ set_ctx->hca_cap.uar_page_sz = cpu_to_be16(PAGE_SHIFT - 12);
+ set_ctx->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_SET_HCA_CAP);
+ err = mlx5_cmd_exec(dev, set_ctx, sizeof(*set_ctx),
+ &set_out, sizeof(set_out));
+ if (err) {
+ mlx5_core_warn(dev, "set hca cap failed, %d\n", err);
+ goto query_ex;
+ }
+
+ err = mlx5_cmd_status_to_err(&set_out.hdr);
+ if (err)
+ goto query_ex;
+
+ if (!csum)
+ dev->cmd.checksum_disabled = 1;
+
+query_ex:
+ kfree(query_out);
+ kfree(set_ctx);
+
+ return err;
+}
+
+static int set_hca_ctrl(struct mlx5_core_dev *dev)
+{
+ struct mlx5_reg_host_endianess he_in;
+ struct mlx5_reg_host_endianess he_out;
+ int err;
+
+ memset(&he_in, 0, sizeof(he_in));
+ he_in.he = MLX5_SET_HOST_ENDIANNESS;
+ err = mlx5_core_access_reg(dev, &he_in, sizeof(he_in),
+ &he_out, sizeof(he_out),
+ MLX5_REG_HOST_ENDIANNESS, 0, 1);
+ return err;
+}
+
+int mlx5_dev_init(struct mlx5_core_dev *dev, struct pci_dev *pdev)
+{
+ struct mlx5_priv *priv = &dev->priv;
+ int err;
+
+ dev->pdev = pdev;
+ pci_set_drvdata(dev->pdev, dev);
+ strncpy(priv->name, dev_name(&pdev->dev), MLX5_MAX_NAME_LEN);
+ priv->name[MLX5_MAX_NAME_LEN - 1] = 0;
+
+ mutex_init(&priv->pgdir_mutex);
+ INIT_LIST_HEAD(&priv->pgdir_list);
+ spin_lock_init(&priv->mkey_lock);
+
+ priv->dbg_root = debugfs_create_dir(dev_name(&pdev->dev), mlx5_debugfs_root);
+ if (!priv->dbg_root)
+ return -ENOMEM;
+
+ err = pci_enable_device(pdev);
+ if (err) {
+ dev_err(&pdev->dev, "Cannot enable PCI device, aborting.\n");
+ goto err_dbg;
+ }
+
+ err = request_bar(pdev);
+ if (err) {
+ dev_err(&pdev->dev, "error requesting BARs, aborting.\n");
+ goto err_disable;
+ }
+
+ pci_set_master(pdev);
+
+ err = set_dma_caps(pdev);
+ if (err) {
+ dev_err(&pdev->dev, "Failed setting DMA capabilities mask, aborting\n");
+ goto err_clr_master;
+ }
+
+ dev->iseg_base = pci_resource_start(dev->pdev, 0);
+ dev->iseg = ioremap(dev->iseg_base, sizeof(*dev->iseg));
+ if (!dev->iseg) {
+ err = -ENOMEM;
+ dev_err(&pdev->dev, "Failed mapping initialization segment, aborting\n");
+ goto err_clr_master;
+ }
+ dev_info(&pdev->dev, "firmware version: %d.%d.%d\n", fw_rev_maj(dev),
+ fw_rev_min(dev), fw_rev_sub(dev));
+
+ err = mlx5_cmd_init(dev);
+ if (err) {
+ dev_err(&pdev->dev, "Failed initializing command interface, aborting\n");
+ goto err_unmap;
+ }
+
+ mlx5_pagealloc_init(dev);
+ err = set_hca_ctrl(dev);
+ if (err) {
+ dev_err(&pdev->dev, "set_hca_ctrl failed\n");
+ goto err_pagealloc_cleanup;
+ }
+
+ err = handle_hca_cap(dev);
+ if (err) {
+ dev_err(&pdev->dev, "handle_hca_cap failed\n");
+ goto err_pagealloc_cleanup;
+ }
+
+ err = mlx5_satisfy_startup_pages(dev);
+ if (err) {
+ dev_err(&pdev->dev, "failed to allocate startup pages\n");
+ goto err_pagealloc_cleanup;
+ }
+
+ err = mlx5_pagealloc_start(dev);
+ if (err) {
+ dev_err(&pdev->dev, "mlx5_pagealloc_start failed\n");
+ goto err_reclaim_pages;
+ }
+
+ err = mlx5_cmd_init_hca(dev);
+ if (err) {
+ dev_err(&pdev->dev, "init hca failed\n");
+ goto err_pagealloc_stop;
+ }
+
+ mlx5_start_health_poll(dev);
+
+ err = mlx5_cmd_query_hca_cap(dev, &dev->caps);
+ if (err) {
+ dev_err(&pdev->dev, "query hca failed\n");
+ goto err_stop_poll;
+ }
+
+ err = mlx5_cmd_query_adapter(dev);
+ if (err) {
+ dev_err(&pdev->dev, "query adapter failed\n");
+ goto err_stop_poll;
+ }
+
+ err = mlx5_enable_msix(dev);
+ if (err) {
+ dev_err(&pdev->dev, "enable msix failed\n");
+ goto err_stop_poll;
+ }
+
+ err = mlx5_eq_init(dev);
+ if (err) {
+ dev_err(&pdev->dev, "failed to initialize eq\n");
+ goto disable_msix;
+ }
+
+ err = mlx5_alloc_uuars(dev, &priv->uuari);
+ if (err) {
+ dev_err(&pdev->dev, "Failed allocating uar, aborting\n");
+ goto err_eq_cleanup;
+ }
+
+ err = mlx5_start_eqs(dev);
+ if (err) {
+ dev_err(&pdev->dev, "Failed to start pages and async EQs\n");
+ goto err_free_uar;
+ }
+
+ MLX5_INIT_DOORBELL_LOCK(&priv->cq_uar_lock);
+
+ mlx5_init_cq_table(dev);
+ mlx5_init_qp_table(dev);
+ mlx5_init_srq_table(dev);
+
+ return 0;
+
+err_free_uar:
+ mlx5_free_uuars(dev, &priv->uuari);
+
+err_eq_cleanup:
+ mlx5_eq_cleanup(dev);
+
+disable_msix:
+ mlx5_disable_msix(dev);
+
+err_stop_poll:
+ mlx5_stop_health_poll(dev);
+ mlx5_cmd_teardown_hca(dev);
+
+err_pagealloc_stop:
+ mlx5_pagealloc_stop(dev);
+
+err_reclaim_pages:
+ mlx5_reclaim_startup_pages(dev);
+
+err_pagealloc_cleanup:
+ mlx5_pagealloc_cleanup(dev);
+ mlx5_cmd_cleanup(dev);
+
+err_unmap:
+ iounmap(dev->iseg);
+
+err_clr_master:
+ pci_clear_master(dev->pdev);
+ release_bar(dev->pdev);
+
+err_disable:
+ pci_disable_device(dev->pdev);
+
+err_dbg:
+ debugfs_remove(priv->dbg_root);
+ return err;
+}
+EXPORT_SYMBOL(mlx5_dev_init);
+
+void mlx5_dev_cleanup(struct mlx5_core_dev *dev)
+{
+ struct mlx5_priv *priv = &dev->priv;
+
+ mlx5_cleanup_srq_table(dev);
+ mlx5_cleanup_qp_table(dev);
+ mlx5_cleanup_cq_table(dev);
+ mlx5_stop_eqs(dev);
+ mlx5_free_uuars(dev, &priv->uuari);
+ mlx5_eq_cleanup(dev);
+ mlx5_disable_msix(dev);
+ mlx5_stop_health_poll(dev);
+ mlx5_cmd_teardown_hca(dev);
+ mlx5_pagealloc_stop(dev);
+ mlx5_reclaim_startup_pages(dev);
+ mlx5_pagealloc_cleanup(dev);
+ mlx5_cmd_cleanup(dev);
+ iounmap(dev->iseg);
+ pci_clear_master(dev->pdev);
+ release_bar(dev->pdev);
+ pci_disable_device(dev->pdev);
+ debugfs_remove(priv->dbg_root);
+}
+EXPORT_SYMBOL(mlx5_dev_cleanup);
+
+static int __init init(void)
+{
+ int err;
+
+ mlx5_register_debugfs();
+ mlx5_core_wq = create_singlethread_workqueue("mlx5_core_wq");
+ if (!mlx5_core_wq) {
+ err = -ENOMEM;
+ goto err_debug;
+ }
+ mlx5_health_init();
+
+ return 0;
+
+ mlx5_health_cleanup();
+err_debug:
+ mlx5_unregister_debugfs();
+ return err;
+}
+
+static void __exit cleanup(void)
+{
+ mlx5_health_cleanup();
+ destroy_workqueue(mlx5_core_wq);
+ mlx5_unregister_debugfs();
+}
+
+module_init(init);
+module_exit(cleanup);
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include <rdma/ib_verbs.h>
+#include "mlx5_core.h"
+
+struct mlx5_attach_mcg_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 qpn;
+ __be32 rsvd;
+ u8 gid[16];
+};
+
+struct mlx5_attach_mcg_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvf[8];
+};
+
+struct mlx5_detach_mcg_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 qpn;
+ __be32 rsvd;
+ u8 gid[16];
+};
+
+struct mlx5_detach_mcg_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvf[8];
+};
+
+int mlx5_core_attach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn)
+{
+ struct mlx5_attach_mcg_mbox_in in;
+ struct mlx5_attach_mcg_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ATTACH_TO_MCG);
+ memcpy(in.gid, mgid, sizeof(*mgid));
+ in.qpn = cpu_to_be32(qpn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ err = mlx5_cmd_status_to_err(&out.hdr);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_attach_mcg);
+
+int mlx5_core_detach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn)
+{
+ struct mlx5_detach_mcg_mbox_in in;
+ struct mlx5_detach_mcg_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DETACH_FROM_MCG);
+ memcpy(in.gid, mgid, sizeof(*mgid));
+ in.qpn = cpu_to_be32(qpn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ err = mlx5_cmd_status_to_err(&out.hdr);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_detach_mcg);
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef __MLX5_CORE_H__
+#define __MLX5_CORE_H__
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+extern int mlx5_core_debug_mask;
+
+#define mlx5_core_dbg(dev, format, arg...) \
+pr_debug("%s:%s:%d:(pid %d): " format, (dev)->priv.name, __func__, __LINE__, \
+ current->pid, ##arg)
+
+#define mlx5_core_dbg_mask(dev, mask, format, arg...) \
+do { \
+ if ((mask) & mlx5_core_debug_mask) \
+ pr_debug("%s:%s:%d:(pid %d): " format, (dev)->priv.name, \
+ __func__, __LINE__, current->pid, ##arg); \
+} while (0)
+
+#define mlx5_core_err(dev, format, arg...) \
+pr_err("%s:%s:%d:(pid %d): " format, (dev)->priv.name, __func__, __LINE__, \
+ current->pid, ##arg)
+
+#define mlx5_core_warn(dev, format, arg...) \
+pr_warn("%s:%s:%d:(pid %d): " format, (dev)->priv.name, __func__, __LINE__, \
+ current->pid, ##arg)
+
+enum {
+ MLX5_CMD_DATA, /* print command payload only */
+ MLX5_CMD_TIME, /* print command execution time */
+};
+
+
+int mlx5_cmd_query_hca_cap(struct mlx5_core_dev *dev,
+ struct mlx5_caps *caps);
+int mlx5_cmd_query_adapter(struct mlx5_core_dev *dev);
+int mlx5_cmd_init_hca(struct mlx5_core_dev *dev);
+int mlx5_cmd_teardown_hca(struct mlx5_core_dev *dev);
+
+#endif /* __MLX5_CORE_H__ */
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include "mlx5_core.h"
+
+int mlx5_core_create_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
+ struct mlx5_create_mkey_mbox_in *in, int inlen)
+{
+ struct mlx5_create_mkey_mbox_out out;
+ int err;
+ u8 key;
+
+ memset(&out, 0, sizeof(out));
+ spin_lock(&dev->priv.mkey_lock);
+ key = dev->priv.mkey_key++;
+ spin_unlock(&dev->priv.mkey_lock);
+ in->seg.qpn_mkey7_0 |= cpu_to_be32(key);
+ in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_MKEY);
+ err = mlx5_cmd_exec(dev, in, inlen, &out, sizeof(out));
+ if (err) {
+ mlx5_core_dbg(dev, "cmd exec faile %d\n", err);
+ return err;
+ }
+
+ if (out.hdr.status) {
+ mlx5_core_dbg(dev, "status %d\n", out.hdr.status);
+ return mlx5_cmd_status_to_err(&out.hdr);
+ }
+
+ mr->key = mlx5_idx_to_mkey(be32_to_cpu(out.mkey) & 0xffffff) | key;
+ mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n", be32_to_cpu(out.mkey), key, mr->key);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_create_mkey);
+
+int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr)
+{
+ struct mlx5_destroy_mkey_mbox_in in;
+ struct mlx5_destroy_mkey_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_MKEY);
+ in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key));
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_destroy_mkey);
+
+int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
+ struct mlx5_query_mkey_mbox_out *out, int outlen)
+{
+ struct mlx5_destroy_mkey_mbox_in in;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(out, 0, outlen);
+
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_MKEY);
+ in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key));
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), out, outlen);
+ if (err)
+ return err;
+
+ if (out->hdr.status)
+ return mlx5_cmd_status_to_err(&out->hdr);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_query_mkey);
+
+int mlx5_core_dump_fill_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
+ u32 *mkey)
+{
+ struct mlx5_query_special_ctxs_mbox_in in;
+ struct mlx5_query_special_ctxs_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ *mkey = be32_to_cpu(out.dump_fill_mkey);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_dump_fill_mkey);
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <asm-generic/kmap_types.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include "mlx5_core.h"
+
+enum {
+ MLX5_PAGES_CANT_GIVE = 0,
+ MLX5_PAGES_GIVE = 1,
+ MLX5_PAGES_TAKE = 2
+};
+
+struct mlx5_pages_req {
+ struct mlx5_core_dev *dev;
+ u32 func_id;
+ s16 npages;
+ struct work_struct work;
+};
+
+struct fw_page {
+ struct rb_node rb_node;
+ u64 addr;
+ struct page *page;
+ u16 func_id;
+};
+
+struct mlx5_query_pages_inbox {
+ struct mlx5_inbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+struct mlx5_query_pages_outbox {
+ struct mlx5_outbox_hdr hdr;
+ u8 reserved[2];
+ __be16 func_id;
+ __be16 init_pages;
+ __be16 num_pages;
+};
+
+struct mlx5_manage_pages_inbox {
+ struct mlx5_inbox_hdr hdr;
+ __be16 rsvd0;
+ __be16 func_id;
+ __be16 rsvd1;
+ __be16 num_entries;
+ u8 rsvd2[16];
+ __be64 pas[0];
+};
+
+struct mlx5_manage_pages_outbox {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd0[2];
+ __be16 num_entries;
+ u8 rsvd1[20];
+ __be64 pas[0];
+};
+
+static int insert_page(struct mlx5_core_dev *dev, u64 addr, struct page *page, u16 func_id)
+{
+ struct rb_root *root = &dev->priv.page_root;
+ struct rb_node **new = &root->rb_node;
+ struct rb_node *parent = NULL;
+ struct fw_page *nfp;
+ struct fw_page *tfp;
+
+ while (*new) {
+ parent = *new;
+ tfp = rb_entry(parent, struct fw_page, rb_node);
+ if (tfp->addr < addr)
+ new = &parent->rb_left;
+ else if (tfp->addr > addr)
+ new = &parent->rb_right;
+ else
+ return -EEXIST;
+ }
+
+ nfp = kmalloc(sizeof(*nfp), GFP_KERNEL);
+ if (!nfp)
+ return -ENOMEM;
+
+ nfp->addr = addr;
+ nfp->page = page;
+ nfp->func_id = func_id;
+
+ rb_link_node(&nfp->rb_node, parent, new);
+ rb_insert_color(&nfp->rb_node, root);
+
+ return 0;
+}
+
+static struct page *remove_page(struct mlx5_core_dev *dev, u64 addr)
+{
+ struct rb_root *root = &dev->priv.page_root;
+ struct rb_node *tmp = root->rb_node;
+ struct page *result = NULL;
+ struct fw_page *tfp;
+
+ while (tmp) {
+ tfp = rb_entry(tmp, struct fw_page, rb_node);
+ if (tfp->addr < addr) {
+ tmp = tmp->rb_left;
+ } else if (tfp->addr > addr) {
+ tmp = tmp->rb_right;
+ } else {
+ rb_erase(&tfp->rb_node, root);
+ result = tfp->page;
+ kfree(tfp);
+ break;
+ }
+ }
+
+ return result;
+}
+
+static int mlx5_cmd_query_pages(struct mlx5_core_dev *dev, u16 *func_id,
+ s16 *pages, s16 *init_pages)
+{
+ struct mlx5_query_pages_inbox in;
+ struct mlx5_query_pages_outbox out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_PAGES);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ if (pages)
+ *pages = be16_to_cpu(out.num_pages);
+ if (init_pages)
+ *init_pages = be16_to_cpu(out.init_pages);
+ *func_id = be16_to_cpu(out.func_id);
+
+ return err;
+}
+
+static int give_pages(struct mlx5_core_dev *dev, u16 func_id, int npages,
+ int notify_fail)
+{
+ struct mlx5_manage_pages_inbox *in;
+ struct mlx5_manage_pages_outbox out;
+ struct page *page;
+ int inlen;
+ u64 addr;
+ int err;
+ int i;
+
+ inlen = sizeof(*in) + npages * sizeof(in->pas[0]);
+ in = mlx5_vzalloc(inlen);
+ if (!in) {
+ mlx5_core_warn(dev, "vzalloc failed %d\n", inlen);
+ return -ENOMEM;
+ }
+ memset(&out, 0, sizeof(out));
+
+ for (i = 0; i < npages; i++) {
+ page = alloc_page(GFP_HIGHUSER);
+ if (!page) {
+ err = -ENOMEM;
+ mlx5_core_warn(dev, "failed to allocate page\n");
+ goto out_alloc;
+ }
+ addr = dma_map_page(&dev->pdev->dev, page, 0,
+ PAGE_SIZE, DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(&dev->pdev->dev, addr)) {
+ mlx5_core_warn(dev, "failed dma mapping page\n");
+ __free_page(page);
+ err = -ENOMEM;
+ goto out_alloc;
+ }
+ err = insert_page(dev, addr, page, func_id);
+ if (err) {
+ mlx5_core_err(dev, "failed to track allocated page\n");
+ dma_unmap_page(&dev->pdev->dev, addr, PAGE_SIZE, DMA_BIDIRECTIONAL);
+ __free_page(page);
+ err = -ENOMEM;
+ goto out_alloc;
+ }
+ in->pas[i] = cpu_to_be64(addr);
+ }
+
+ in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_MANAGE_PAGES);
+ in->hdr.opmod = cpu_to_be16(MLX5_PAGES_GIVE);
+ in->func_id = cpu_to_be16(func_id);
+ in->num_entries = cpu_to_be16(npages);
+ err = mlx5_cmd_exec(dev, in, inlen, &out, sizeof(out));
+ mlx5_core_dbg(dev, "err %d\n", err);
+ if (err) {
+ mlx5_core_warn(dev, "func_id 0x%x, npages %d, err %d\n", func_id, npages, err);
+ goto out_alloc;
+ }
+ dev->priv.fw_pages += npages;
+
+ if (out.hdr.status) {
+ err = mlx5_cmd_status_to_err(&out.hdr);
+ if (err) {
+ mlx5_core_warn(dev, "func_id 0x%x, npages %d, status %d\n", func_id, npages, out.hdr.status);
+ goto out_alloc;
+ }
+ }
+
+ mlx5_core_dbg(dev, "err %d\n", err);
+
+ goto out_free;
+
+out_alloc:
+ if (notify_fail) {
+ memset(in, 0, inlen);
+ memset(&out, 0, sizeof(out));
+ in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_MANAGE_PAGES);
+ in->hdr.opmod = cpu_to_be16(MLX5_PAGES_CANT_GIVE);
+ if (mlx5_cmd_exec(dev, in, sizeof(*in), &out, sizeof(out)))
+ mlx5_core_warn(dev, "\n");
+ }
+ for (i--; i >= 0; i--) {
+ addr = be64_to_cpu(in->pas[i]);
+ page = remove_page(dev, addr);
+ if (!page) {
+ mlx5_core_err(dev, "BUG: can't remove page at addr 0x%llx\n",
+ addr);
+ continue;
+ }
+ dma_unmap_page(&dev->pdev->dev, addr, PAGE_SIZE, DMA_BIDIRECTIONAL);
+ __free_page(page);
+ }
+
+out_free:
+ mlx5_vfree(in);
+ return err;
+}
+
+static int reclaim_pages(struct mlx5_core_dev *dev, u32 func_id, int npages,
+ int *nclaimed)
+{
+ struct mlx5_manage_pages_inbox in;
+ struct mlx5_manage_pages_outbox *out;
+ struct page *page;
+ int num_claimed;
+ int outlen;
+ u64 addr;
+ int err;
+ int i;
+
+ memset(&in, 0, sizeof(in));
+ outlen = sizeof(*out) + npages * sizeof(out->pas[0]);
+ out = mlx5_vzalloc(outlen);
+ if (!out)
+ return -ENOMEM;
+
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_MANAGE_PAGES);
+ in.hdr.opmod = cpu_to_be16(MLX5_PAGES_TAKE);
+ in.func_id = cpu_to_be16(func_id);
+ in.num_entries = cpu_to_be16(npages);
+ mlx5_core_dbg(dev, "npages %d, outlen %d\n", npages, outlen);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), out, outlen);
+ if (err) {
+ mlx5_core_err(dev, "failed recliaming pages\n");
+ goto out_free;
+ }
+ dev->priv.fw_pages -= npages;
+
+ if (out->hdr.status) {
+ err = mlx5_cmd_status_to_err(&out->hdr);
+ goto out_free;
+ }
+
+ num_claimed = be16_to_cpu(out->num_entries);
+ if (nclaimed)
+ *nclaimed = num_claimed;
+
+ for (i = 0; i < num_claimed; i++) {
+ addr = be64_to_cpu(out->pas[i]);
+ page = remove_page(dev, addr);
+ if (!page) {
+ mlx5_core_warn(dev, "FW reported unknown DMA address 0x%llx\n", addr);
+ } else {
+ dma_unmap_page(&dev->pdev->dev, addr, PAGE_SIZE, DMA_BIDIRECTIONAL);
+ __free_page(page);
+ }
+ }
+
+out_free:
+ mlx5_vfree(out);
+ return err;
+}
+
+static void pages_work_handler(struct work_struct *work)
+{
+ struct mlx5_pages_req *req = container_of(work, struct mlx5_pages_req, work);
+ struct mlx5_core_dev *dev = req->dev;
+ int err = 0;
+
+ if (req->npages < 0)
+ err = reclaim_pages(dev, req->func_id, -1 * req->npages, NULL);
+ else if (req->npages > 0)
+ err = give_pages(dev, req->func_id, req->npages, 1);
+
+ if (err)
+ mlx5_core_warn(dev, "%s fail %d\n", req->npages < 0 ?
+ "reclaim" : "give", err);
+
+ kfree(req);
+}
+
+void mlx5_core_req_pages_handler(struct mlx5_core_dev *dev, u16 func_id,
+ s16 npages)
+{
+ struct mlx5_pages_req *req;
+
+ req = kzalloc(sizeof(*req), GFP_ATOMIC);
+ if (!req) {
+ mlx5_core_warn(dev, "failed to allocate pages request\n");
+ return;
+ }
+
+ req->dev = dev;
+ req->func_id = func_id;
+ req->npages = npages;
+ INIT_WORK(&req->work, pages_work_handler);
+ queue_work(dev->priv.pg_wq, &req->work);
+}
+
+int mlx5_satisfy_startup_pages(struct mlx5_core_dev *dev)
+{
+ s16 uninitialized_var(init_pages);
+ u16 uninitialized_var(func_id);
+ int err;
+
+ err = mlx5_cmd_query_pages(dev, &func_id, NULL, &init_pages);
+ if (err)
+ return err;
+
+ mlx5_core_dbg(dev, "requested %d init pages for func_id 0x%x\n", init_pages, func_id);
+
+ return give_pages(dev, func_id, init_pages, 0);
+}
+
+static int optimal_reclaimed_pages(void)
+{
+ struct mlx5_cmd_prot_block *block;
+ struct mlx5_cmd_layout *lay;
+ int ret;
+
+ ret = (sizeof(lay->in) + sizeof(block->data) -
+ sizeof(struct mlx5_manage_pages_outbox)) / 8;
+
+ return ret;
+}
+
+int mlx5_reclaim_startup_pages(struct mlx5_core_dev *dev)
+{
+ unsigned long end = jiffies + msecs_to_jiffies(5000);
+ struct fw_page *fwp;
+ struct rb_node *p;
+ int err;
+
+ do {
+ p = rb_first(&dev->priv.page_root);
+ if (p) {
+ fwp = rb_entry(p, struct fw_page, rb_node);
+ err = reclaim_pages(dev, fwp->func_id, optimal_reclaimed_pages(), NULL);
+ if (err) {
+ mlx5_core_warn(dev, "failed reclaiming pages (%d)\n", err);
+ return err;
+ }
+ }
+ if (time_after(jiffies, end)) {
+ mlx5_core_warn(dev, "FW did not return all pages. giving up...\n");
+ break;
+ }
+ } while (p);
+
+ return 0;
+}
+
+void mlx5_pagealloc_init(struct mlx5_core_dev *dev)
+{
+ dev->priv.page_root = RB_ROOT;
+}
+
+void mlx5_pagealloc_cleanup(struct mlx5_core_dev *dev)
+{
+ /* nothing */
+}
+
+int mlx5_pagealloc_start(struct mlx5_core_dev *dev)
+{
+ dev->priv.pg_wq = create_singlethread_workqueue("mlx5_page_allocator");
+ if (!dev->priv.pg_wq)
+ return -ENOMEM;
+
+ return 0;
+}
+
+void mlx5_pagealloc_stop(struct mlx5_core_dev *dev)
+{
+ destroy_workqueue(dev->priv.pg_wq);
+}
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include "mlx5_core.h"
+
+struct mlx5_alloc_pd_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+struct mlx5_alloc_pd_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ __be32 pdn;
+ u8 rsvd[4];
+};
+
+struct mlx5_dealloc_pd_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 pdn;
+ u8 rsvd[4];
+};
+
+struct mlx5_dealloc_pd_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+int mlx5_core_alloc_pd(struct mlx5_core_dev *dev, u32 *pdn)
+{
+ struct mlx5_alloc_pd_mbox_in in;
+ struct mlx5_alloc_pd_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ALLOC_PD);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ *pdn = be32_to_cpu(out.pdn) & 0xffffff;
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_alloc_pd);
+
+int mlx5_core_dealloc_pd(struct mlx5_core_dev *dev, u32 pdn)
+{
+ struct mlx5_dealloc_pd_mbox_in in;
+ struct mlx5_dealloc_pd_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DEALLOC_PD);
+ in.pdn = cpu_to_be32(pdn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_dealloc_pd);
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/module.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include "mlx5_core.h"
+
+int mlx5_core_access_reg(struct mlx5_core_dev *dev, void *data_in,
+ int size_in, void *data_out, int size_out,
+ u16 reg_num, int arg, int write)
+{
+ struct mlx5_access_reg_mbox_in *in = NULL;
+ struct mlx5_access_reg_mbox_out *out = NULL;
+ int err = -ENOMEM;
+
+ in = mlx5_vzalloc(sizeof(*in) + size_in);
+ if (!in)
+ return -ENOMEM;
+
+ out = mlx5_vzalloc(sizeof(*out) + size_out);
+ if (!out)
+ goto ex1;
+
+ memcpy(in->data, data_in, size_in);
+ in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ACCESS_REG);
+ in->hdr.opmod = cpu_to_be16(!write);
+ in->arg = cpu_to_be32(arg);
+ in->register_id = cpu_to_be16(reg_num);
+ err = mlx5_cmd_exec(dev, in, sizeof(*in) + size_in, out,
+ sizeof(out) + size_out);
+ if (err)
+ goto ex2;
+
+ if (out->hdr.status)
+ err = mlx5_cmd_status_to_err(&out->hdr);
+
+ if (!err)
+ memcpy(data_out, out->data, size_out);
+
+ex2:
+ mlx5_vfree(out);
+ex1:
+ mlx5_vfree(in);
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_core_access_reg);
+
+
+struct mlx5_reg_pcap {
+ u8 rsvd0;
+ u8 port_num;
+ u8 rsvd1[2];
+ __be32 caps_127_96;
+ __be32 caps_95_64;
+ __be32 caps_63_32;
+ __be32 caps_31_0;
+};
+
+int mlx5_set_port_caps(struct mlx5_core_dev *dev, int port_num, u32 caps)
+{
+ struct mlx5_reg_pcap in;
+ struct mlx5_reg_pcap out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ in.caps_127_96 = cpu_to_be32(caps);
+ in.port_num = port_num;
+
+ err = mlx5_core_access_reg(dev, &in, sizeof(in), &out,
+ sizeof(out), MLX5_REG_PCAP, 0, 1);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_set_port_caps);
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+
+#include <linux/gfp.h>
+#include <linux/export.h>
+#include <linux/mlx5/cmd.h>
+#include <linux/mlx5/qp.h>
+#include <linux/mlx5/driver.h>
+
+#include "mlx5_core.h"
+
+void mlx5_qp_event(struct mlx5_core_dev *dev, u32 qpn, int event_type)
+{
+ struct mlx5_qp_table *table = &dev->priv.qp_table;
+ struct mlx5_core_qp *qp;
+
+ spin_lock(&table->lock);
+
+ qp = radix_tree_lookup(&table->tree, qpn);
+ if (qp)
+ atomic_inc(&qp->refcount);
+
+ spin_unlock(&table->lock);
+
+ if (!qp) {
+ mlx5_core_warn(dev, "Async event for bogus QP 0x%x\n", qpn);
+ return;
+ }
+
+ qp->event(qp, event_type);
+
+ if (atomic_dec_and_test(&qp->refcount))
+ complete(&qp->free);
+}
+
+int mlx5_core_create_qp(struct mlx5_core_dev *dev,
+ struct mlx5_core_qp *qp,
+ struct mlx5_create_qp_mbox_in *in,
+ int inlen)
+{
+ struct mlx5_qp_table *table = &dev->priv.qp_table;
+ struct mlx5_create_qp_mbox_out out;
+ struct mlx5_destroy_qp_mbox_in din;
+ struct mlx5_destroy_qp_mbox_out dout;
+ int err;
+
+ memset(&dout, 0, sizeof(dout));
+ in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_QP);
+
+ err = mlx5_cmd_exec(dev, in, inlen, &out, sizeof(out));
+ if (err) {
+ mlx5_core_warn(dev, "ret %d", err);
+ return err;
+ }
+
+ if (out.hdr.status) {
+ pr_warn("current num of QPs 0x%x\n", atomic_read(&dev->num_qps));
+ return mlx5_cmd_status_to_err(&out.hdr);
+ }
+
+ qp->qpn = be32_to_cpu(out.qpn) & 0xffffff;
+ mlx5_core_dbg(dev, "qpn = 0x%x\n", qp->qpn);
+
+ spin_lock_irq(&table->lock);
+ err = radix_tree_insert(&table->tree, qp->qpn, qp);
+ spin_unlock_irq(&table->lock);
+ if (err) {
+ mlx5_core_warn(dev, "err %d", err);
+ goto err_cmd;
+ }
+
+ err = mlx5_debug_qp_add(dev, qp);
+ if (err)
+ mlx5_core_dbg(dev, "failed adding QP 0x%x to debug file system\n",
+ qp->qpn);
+
+ qp->pid = current->pid;
+ atomic_set(&qp->refcount, 1);
+ atomic_inc(&dev->num_qps);
+ init_completion(&qp->free);
+
+ return 0;
+
+err_cmd:
+ memset(&din, 0, sizeof(din));
+ memset(&dout, 0, sizeof(dout));
+ din.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_QP);
+ din.qpn = cpu_to_be32(qp->qpn);
+ mlx5_cmd_exec(dev, &din, sizeof(din), &out, sizeof(dout));
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_core_create_qp);
+
+int mlx5_core_destroy_qp(struct mlx5_core_dev *dev,
+ struct mlx5_core_qp *qp)
+{
+ struct mlx5_destroy_qp_mbox_in in;
+ struct mlx5_destroy_qp_mbox_out out;
+ struct mlx5_qp_table *table = &dev->priv.qp_table;
+ unsigned long flags;
+ int err;
+
+ mlx5_debug_qp_remove(dev, qp);
+
+ spin_lock_irqsave(&table->lock, flags);
+ radix_tree_delete(&table->tree, qp->qpn);
+ spin_unlock_irqrestore(&table->lock, flags);
+
+ if (atomic_dec_and_test(&qp->refcount))
+ complete(&qp->free);
+ wait_for_completion(&qp->free);
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_QP);
+ in.qpn = cpu_to_be32(qp->qpn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ atomic_dec(&dev->num_qps);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(mlx5_core_destroy_qp);
+
+int mlx5_core_qp_modify(struct mlx5_core_dev *dev, enum mlx5_qp_state cur_state,
+ enum mlx5_qp_state new_state,
+ struct mlx5_modify_qp_mbox_in *in, int sqd_event,
+ struct mlx5_core_qp *qp)
+{
+ static const u16 optab[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE] = {
+ [MLX5_QP_STATE_RST] = {
+ [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
+ [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
+ [MLX5_QP_STATE_INIT] = MLX5_CMD_OP_RST2INIT_QP,
+ },
+ [MLX5_QP_STATE_INIT] = {
+ [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
+ [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
+ [MLX5_QP_STATE_INIT] = MLX5_CMD_OP_INIT2INIT_QP,
+ [MLX5_QP_STATE_RTR] = MLX5_CMD_OP_INIT2RTR_QP,
+ },
+ [MLX5_QP_STATE_RTR] = {
+ [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
+ [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
+ [MLX5_QP_STATE_RTS] = MLX5_CMD_OP_RTR2RTS_QP,
+ },
+ [MLX5_QP_STATE_RTS] = {
+ [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
+ [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
+ [MLX5_QP_STATE_RTS] = MLX5_CMD_OP_RTS2RTS_QP,
+ [MLX5_QP_STATE_SQD] = MLX5_CMD_OP_RTS2SQD_QP,
+ },
+ [MLX5_QP_STATE_SQD] = {
+ [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
+ [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
+ [MLX5_QP_STATE_RTS] = MLX5_CMD_OP_SQD2RTS_QP,
+ [MLX5_QP_STATE_SQD] = MLX5_CMD_OP_SQD2SQD_QP,
+ },
+ [MLX5_QP_STATE_SQER] = {
+ [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
+ [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
+ [MLX5_QP_STATE_RTS] = MLX5_CMD_OP_SQERR2RTS_QP,
+ },
+ [MLX5_QP_STATE_ERR] = {
+ [MLX5_QP_STATE_RST] = MLX5_CMD_OP_2RST_QP,
+ [MLX5_QP_STATE_ERR] = MLX5_CMD_OP_2ERR_QP,
+ }
+ };
+
+ struct mlx5_modify_qp_mbox_out out;
+ int err = 0;
+ u16 op;
+
+ if (cur_state >= MLX5_QP_NUM_STATE || new_state >= MLX5_QP_NUM_STATE ||
+ !optab[cur_state][new_state])
+ return -EINVAL;
+
+ memset(&out, 0, sizeof(out));
+ op = optab[cur_state][new_state];
+ in->hdr.opcode = cpu_to_be16(op);
+ in->qpn = cpu_to_be32(qp->qpn);
+ err = mlx5_cmd_exec(dev, in, sizeof(*in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ return mlx5_cmd_status_to_err(&out.hdr);
+}
+EXPORT_SYMBOL_GPL(mlx5_core_qp_modify);
+
+void mlx5_init_qp_table(struct mlx5_core_dev *dev)
+{
+ struct mlx5_qp_table *table = &dev->priv.qp_table;
+
+ spin_lock_init(&table->lock);
+ INIT_RADIX_TREE(&table->tree, GFP_ATOMIC);
+ mlx5_qp_debugfs_init(dev);
+}
+
+void mlx5_cleanup_qp_table(struct mlx5_core_dev *dev)
+{
+ mlx5_qp_debugfs_cleanup(dev);
+}
+
+int mlx5_core_qp_query(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp,
+ struct mlx5_query_qp_mbox_out *out, int outlen)
+{
+ struct mlx5_query_qp_mbox_in in;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(out, 0, outlen);
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_QP);
+ in.qpn = cpu_to_be32(qp->qpn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), out, outlen);
+ if (err)
+ return err;
+
+ if (out->hdr.status)
+ return mlx5_cmd_status_to_err(&out->hdr);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_core_qp_query);
+
+int mlx5_core_xrcd_alloc(struct mlx5_core_dev *dev, u32 *xrcdn)
+{
+ struct mlx5_alloc_xrcd_mbox_in in;
+ struct mlx5_alloc_xrcd_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ALLOC_XRCD);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ err = mlx5_cmd_status_to_err(&out.hdr);
+ else
+ *xrcdn = be32_to_cpu(out.xrcdn);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_core_xrcd_alloc);
+
+int mlx5_core_xrcd_dealloc(struct mlx5_core_dev *dev, u32 xrcdn)
+{
+ struct mlx5_dealloc_xrcd_mbox_in in;
+ struct mlx5_dealloc_xrcd_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DEALLOC_XRCD);
+ in.xrcdn = cpu_to_be32(xrcdn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ err = mlx5_cmd_status_to_err(&out.hdr);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_core_xrcd_dealloc);
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include <linux/mlx5/srq.h>
+#include <rdma/ib_verbs.h>
+#include "mlx5_core.h"
+
+void mlx5_srq_event(struct mlx5_core_dev *dev, u32 srqn, int event_type)
+{
+ struct mlx5_srq_table *table = &dev->priv.srq_table;
+ struct mlx5_core_srq *srq;
+
+ spin_lock(&table->lock);
+
+ srq = radix_tree_lookup(&table->tree, srqn);
+ if (srq)
+ atomic_inc(&srq->refcount);
+
+ spin_unlock(&table->lock);
+
+ if (!srq) {
+ mlx5_core_warn(dev, "Async event for bogus SRQ 0x%08x\n", srqn);
+ return;
+ }
+
+ srq->event(srq, event_type);
+
+ if (atomic_dec_and_test(&srq->refcount))
+ complete(&srq->free);
+}
+
+struct mlx5_core_srq *mlx5_core_get_srq(struct mlx5_core_dev *dev, u32 srqn)
+{
+ struct mlx5_srq_table *table = &dev->priv.srq_table;
+ struct mlx5_core_srq *srq;
+
+ spin_lock(&table->lock);
+
+ srq = radix_tree_lookup(&table->tree, srqn);
+ if (srq)
+ atomic_inc(&srq->refcount);
+
+ spin_unlock(&table->lock);
+
+ return srq;
+}
+EXPORT_SYMBOL(mlx5_core_get_srq);
+
+int mlx5_core_create_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
+ struct mlx5_create_srq_mbox_in *in, int inlen)
+{
+ struct mlx5_create_srq_mbox_out out;
+ struct mlx5_srq_table *table = &dev->priv.srq_table;
+ struct mlx5_destroy_srq_mbox_in din;
+ struct mlx5_destroy_srq_mbox_out dout;
+ int err;
+
+ memset(&out, 0, sizeof(out));
+ in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_SRQ);
+ err = mlx5_cmd_exec(dev, in, inlen, &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ srq->srqn = be32_to_cpu(out.srqn) & 0xffffff;
+
+ atomic_set(&srq->refcount, 1);
+ init_completion(&srq->free);
+
+ spin_lock_irq(&table->lock);
+ err = radix_tree_insert(&table->tree, srq->srqn, srq);
+ spin_unlock_irq(&table->lock);
+ if (err) {
+ mlx5_core_warn(dev, "err %d, srqn 0x%x\n", err, srq->srqn);
+ goto err_cmd;
+ }
+
+ return 0;
+
+err_cmd:
+ memset(&din, 0, sizeof(din));
+ memset(&dout, 0, sizeof(dout));
+ din.srqn = cpu_to_be32(srq->srqn);
+ din.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_SRQ);
+ mlx5_cmd_exec(dev, &din, sizeof(din), &dout, sizeof(dout));
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_create_srq);
+
+int mlx5_core_destroy_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq)
+{
+ struct mlx5_destroy_srq_mbox_in in;
+ struct mlx5_destroy_srq_mbox_out out;
+ struct mlx5_srq_table *table = &dev->priv.srq_table;
+ struct mlx5_core_srq *tmp;
+ int err;
+
+ spin_lock_irq(&table->lock);
+ tmp = radix_tree_delete(&table->tree, srq->srqn);
+ spin_unlock_irq(&table->lock);
+ if (!tmp) {
+ mlx5_core_warn(dev, "srq 0x%x not found in tree\n", srq->srqn);
+ return -EINVAL;
+ }
+ if (tmp != srq) {
+ mlx5_core_warn(dev, "corruption on srqn 0x%x\n", srq->srqn);
+ return -EINVAL;
+ }
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_SRQ);
+ in.srqn = cpu_to_be32(srq->srqn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ if (atomic_dec_and_test(&srq->refcount))
+ complete(&srq->free);
+ wait_for_completion(&srq->free);
+
+ return 0;
+}
+EXPORT_SYMBOL(mlx5_core_destroy_srq);
+
+int mlx5_core_query_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
+ struct mlx5_query_srq_mbox_out *out)
+{
+ struct mlx5_query_srq_mbox_in in;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(out, 0, sizeof(*out));
+
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_SRQ);
+ in.srqn = cpu_to_be32(srq->srqn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), out, sizeof(*out));
+ if (err)
+ return err;
+
+ if (out->hdr.status)
+ return mlx5_cmd_status_to_err(&out->hdr);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_query_srq);
+
+int mlx5_core_arm_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
+ u16 lwm, int is_srq)
+{
+ struct mlx5_arm_srq_mbox_in in;
+ struct mlx5_arm_srq_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ARM_RQ);
+ in.hdr.opmod = cpu_to_be16(!!is_srq);
+ in.srqn = cpu_to_be32(srq->srqn);
+ in.lwm = cpu_to_be16(lwm);
+
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ return err;
+
+ if (out.hdr.status)
+ return mlx5_cmd_status_to_err(&out.hdr);
+
+ return err;
+}
+EXPORT_SYMBOL(mlx5_core_arm_srq);
+
+void mlx5_init_srq_table(struct mlx5_core_dev *dev)
+{
+ struct mlx5_srq_table *table = &dev->priv.srq_table;
+
+ spin_lock_init(&table->lock);
+ INIT_RADIX_TREE(&table->tree, GFP_ATOMIC);
+}
+
+void mlx5_cleanup_srq_table(struct mlx5_core_dev *dev)
+{
+ /* nothing */
+}
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mlx5/driver.h>
+#include <linux/mlx5/cmd.h>
+#include "mlx5_core.h"
+
+enum {
+ NUM_DRIVER_UARS = 4,
+ NUM_LOW_LAT_UUARS = 4,
+};
+
+
+struct mlx5_alloc_uar_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+struct mlx5_alloc_uar_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ __be32 uarn;
+ u8 rsvd[4];
+};
+
+struct mlx5_free_uar_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 uarn;
+ u8 rsvd[4];
+};
+
+struct mlx5_free_uar_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+int mlx5_cmd_alloc_uar(struct mlx5_core_dev *dev, u32 *uarn)
+{
+ struct mlx5_alloc_uar_mbox_in in;
+ struct mlx5_alloc_uar_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ memset(&out, 0, sizeof(out));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ALLOC_UAR);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ goto ex;
+
+ if (out.hdr.status) {
+ err = mlx5_cmd_status_to_err(&out.hdr);
+ goto ex;
+ }
+
+ *uarn = be32_to_cpu(out.uarn) & 0xffffff;
+
+ex:
+ return err;
+}
+EXPORT_SYMBOL(mlx5_cmd_alloc_uar);
+
+int mlx5_cmd_free_uar(struct mlx5_core_dev *dev, u32 uarn)
+{
+ struct mlx5_free_uar_mbox_in in;
+ struct mlx5_free_uar_mbox_out out;
+ int err;
+
+ memset(&in, 0, sizeof(in));
+ in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DEALLOC_UAR);
+ in.uarn = cpu_to_be32(uarn);
+ err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+ if (err)
+ goto ex;
+
+ if (out.hdr.status)
+ err = mlx5_cmd_status_to_err(&out.hdr);
+
+ex:
+ return err;
+}
+EXPORT_SYMBOL(mlx5_cmd_free_uar);
+
+static int need_uuar_lock(int uuarn)
+{
+ int tot_uuars = NUM_DRIVER_UARS * MLX5_BF_REGS_PER_PAGE;
+
+ if (uuarn == 0 || tot_uuars - NUM_LOW_LAT_UUARS)
+ return 0;
+
+ return 1;
+}
+
+int mlx5_alloc_uuars(struct mlx5_core_dev *dev, struct mlx5_uuar_info *uuari)
+{
+ int tot_uuars = NUM_DRIVER_UARS * MLX5_BF_REGS_PER_PAGE;
+ struct mlx5_bf *bf;
+ phys_addr_t addr;
+ int err;
+ int i;
+
+ uuari->num_uars = NUM_DRIVER_UARS;
+ uuari->num_low_latency_uuars = NUM_LOW_LAT_UUARS;
+
+ mutex_init(&uuari->lock);
+ uuari->uars = kcalloc(uuari->num_uars, sizeof(*uuari->uars), GFP_KERNEL);
+ if (!uuari->uars)
+ return -ENOMEM;
+
+ uuari->bfs = kcalloc(tot_uuars, sizeof(*uuari->bfs), GFP_KERNEL);
+ if (!uuari->bfs) {
+ err = -ENOMEM;
+ goto out_uars;
+ }
+
+ uuari->bitmap = kcalloc(BITS_TO_LONGS(tot_uuars), sizeof(*uuari->bitmap),
+ GFP_KERNEL);
+ if (!uuari->bitmap) {
+ err = -ENOMEM;
+ goto out_bfs;
+ }
+
+ uuari->count = kcalloc(tot_uuars, sizeof(*uuari->count), GFP_KERNEL);
+ if (!uuari->count) {
+ err = -ENOMEM;
+ goto out_bitmap;
+ }
+
+ for (i = 0; i < uuari->num_uars; i++) {
+ err = mlx5_cmd_alloc_uar(dev, &uuari->uars[i].index);
+ if (err)
+ goto out_count;
+
+ addr = dev->iseg_base + ((phys_addr_t)(uuari->uars[i].index) << PAGE_SHIFT);
+ uuari->uars[i].map = ioremap(addr, PAGE_SIZE);
+ if (!uuari->uars[i].map) {
+ mlx5_cmd_free_uar(dev, uuari->uars[i].index);
+ goto out_count;
+ }
+ mlx5_core_dbg(dev, "allocated uar index 0x%x, mmaped at %p\n",
+ uuari->uars[i].index, uuari->uars[i].map);
+ }
+
+ for (i = 0; i < tot_uuars; i++) {
+ bf = &uuari->bfs[i];
+
+ bf->buf_size = dev->caps.bf_reg_size / 2;
+ bf->uar = &uuari->uars[i / MLX5_BF_REGS_PER_PAGE];
+ bf->regreg = uuari->uars[i / MLX5_BF_REGS_PER_PAGE].map;
+ bf->reg = NULL; /* Add WC support */
+ bf->offset = (i % MLX5_BF_REGS_PER_PAGE) * dev->caps.bf_reg_size +
+ MLX5_BF_OFFSET;
+ bf->need_lock = need_uuar_lock(i);
+ spin_lock_init(&bf->lock);
+ spin_lock_init(&bf->lock32);
+ bf->uuarn = i;
+ }
+
+ return 0;
+
+out_count:
+ for (i--; i >= 0; i--) {
+ iounmap(uuari->uars[i].map);
+ mlx5_cmd_free_uar(dev, uuari->uars[i].index);
+ }
+ kfree(uuari->count);
+
+out_bitmap:
+ kfree(uuari->bitmap);
+
+out_bfs:
+ kfree(uuari->bfs);
+
+out_uars:
+ kfree(uuari->uars);
+ return err;
+}
+
+int mlx5_free_uuars(struct mlx5_core_dev *dev, struct mlx5_uuar_info *uuari)
+{
+ int i = uuari->num_uars;
+
+ for (i--; i >= 0; i--) {
+ iounmap(uuari->uars[i].map);
+ mlx5_cmd_free_uar(dev, uuari->uars[i].index);
+ }
+
+ kfree(uuari->count);
+ kfree(uuari->bitmap);
+ kfree(uuari->bfs);
+ kfree(uuari->uars);
+
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef MLX5_CMD_H
+#define MLX5_CMD_H
+
+#include <linux/types.h>
+
+struct manage_pages_layout {
+ u64 ptr;
+ u32 reserved;
+ u16 num_entries;
+ u16 func_id;
+};
+
+
+struct mlx5_cmd_alloc_uar_imm_out {
+ u32 rsvd[3];
+ u32 uarn;
+};
+
+#endif /* MLX5_CMD_H */
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef MLX5_CORE_CQ_H
+#define MLX5_CORE_CQ_H
+
+#include <rdma/ib_verbs.h>
+#include <linux/mlx5/driver.h>
+
+
+struct mlx5_core_cq {
+ u32 cqn;
+ int cqe_sz;
+ __be32 *set_ci_db;
+ __be32 *arm_db;
+ atomic_t refcount;
+ struct completion free;
+ unsigned vector;
+ int irqn;
+ void (*comp) (struct mlx5_core_cq *);
+ void (*event) (struct mlx5_core_cq *, enum mlx5_event);
+ struct mlx5_uar *uar;
+ u32 cons_index;
+ unsigned arm_sn;
+ struct mlx5_rsc_debug *dbg;
+ int pid;
+};
+
+
+enum {
+ MLX5_CQE_SYNDROME_LOCAL_LENGTH_ERR = 0x01,
+ MLX5_CQE_SYNDROME_LOCAL_QP_OP_ERR = 0x02,
+ MLX5_CQE_SYNDROME_LOCAL_PROT_ERR = 0x04,
+ MLX5_CQE_SYNDROME_WR_FLUSH_ERR = 0x05,
+ MLX5_CQE_SYNDROME_MW_BIND_ERR = 0x06,
+ MLX5_CQE_SYNDROME_BAD_RESP_ERR = 0x10,
+ MLX5_CQE_SYNDROME_LOCAL_ACCESS_ERR = 0x11,
+ MLX5_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR = 0x12,
+ MLX5_CQE_SYNDROME_REMOTE_ACCESS_ERR = 0x13,
+ MLX5_CQE_SYNDROME_REMOTE_OP_ERR = 0x14,
+ MLX5_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR = 0x15,
+ MLX5_CQE_SYNDROME_RNR_RETRY_EXC_ERR = 0x16,
+ MLX5_CQE_SYNDROME_REMOTE_ABORTED_ERR = 0x22,
+};
+
+enum {
+ MLX5_CQE_OWNER_MASK = 1,
+ MLX5_CQE_REQ = 0,
+ MLX5_CQE_RESP_WR_IMM = 1,
+ MLX5_CQE_RESP_SEND = 2,
+ MLX5_CQE_RESP_SEND_IMM = 3,
+ MLX5_CQE_RESP_SEND_INV = 4,
+ MLX5_CQE_RESIZE_CQ = 0xff, /* TBD */
+ MLX5_CQE_REQ_ERR = 13,
+ MLX5_CQE_RESP_ERR = 14,
+};
+
+enum {
+ MLX5_CQ_MODIFY_RESEIZE = 0,
+ MLX5_CQ_MODIFY_MODER = 1,
+ MLX5_CQ_MODIFY_MAPPING = 2,
+};
+
+struct mlx5_cq_modify_params {
+ int type;
+ union {
+ struct {
+ u32 page_offset;
+ u8 log_cq_size;
+ } resize;
+
+ struct {
+ } moder;
+
+ struct {
+ } mapping;
+ } params;
+};
+
+enum {
+ CQE_SIZE_64 = 0,
+ CQE_SIZE_128 = 1,
+};
+
+static inline int cqe_sz_to_mlx_sz(u8 size)
+{
+ return size == 64 ? CQE_SIZE_64 : CQE_SIZE_128;
+}
+
+static inline void mlx5_cq_set_ci(struct mlx5_core_cq *cq)
+{
+ *cq->set_ci_db = cpu_to_be32(cq->cons_index & 0xffffff);
+}
+
+enum {
+ MLX5_CQ_DB_REQ_NOT_SOL = 1 << 24,
+ MLX5_CQ_DB_REQ_NOT = 0 << 24
+};
+
+static inline void mlx5_cq_arm(struct mlx5_core_cq *cq, u32 cmd,
+ void __iomem *uar_page,
+ spinlock_t *doorbell_lock)
+{
+ __be32 doorbell[2];
+ u32 sn;
+ u32 ci;
+
+ sn = cq->arm_sn & 3;
+ ci = cq->cons_index & 0xffffff;
+
+ *cq->arm_db = cpu_to_be32(sn << 28 | cmd | ci);
+
+ /* Make sure that the doorbell record in host memory is
+ * written before ringing the doorbell via PCI MMIO.
+ */
+ wmb();
+
+ doorbell[0] = cpu_to_be32(sn << 28 | cmd | ci);
+ doorbell[1] = cpu_to_be32(cq->cqn);
+
+ mlx5_write64(doorbell, uar_page + MLX5_CQ_DOORBELL, doorbell_lock);
+}
+
+int mlx5_init_cq_table(struct mlx5_core_dev *dev);
+void mlx5_cleanup_cq_table(struct mlx5_core_dev *dev);
+int mlx5_core_create_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
+ struct mlx5_create_cq_mbox_in *in, int inlen);
+int mlx5_core_destroy_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq);
+int mlx5_core_query_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
+ struct mlx5_query_cq_mbox_out *out);
+int mlx5_core_modify_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
+ int type, struct mlx5_cq_modify_params *params);
+int mlx5_debug_cq_add(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq);
+void mlx5_debug_cq_remove(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq);
+
+#endif /* MLX5_CORE_CQ_H */
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef MLX5_DEVICE_H
+#define MLX5_DEVICE_H
+
+#include <linux/types.h>
+#include <rdma/ib_verbs.h>
+
+#if defined(__LITTLE_ENDIAN)
+#define MLX5_SET_HOST_ENDIANNESS 0
+#elif defined(__BIG_ENDIAN)
+#define MLX5_SET_HOST_ENDIANNESS 0x80
+#else
+#error Host endianness not defined
+#endif
+
+enum {
+ MLX5_MAX_COMMANDS = 32,
+ MLX5_CMD_DATA_BLOCK_SIZE = 512,
+ MLX5_PCI_CMD_XPORT = 7,
+};
+
+enum {
+ MLX5_EXTENDED_UD_AV = 0x80000000,
+};
+
+enum {
+ MLX5_CQ_STATE_ARMED = 9,
+ MLX5_CQ_STATE_ALWAYS_ARMED = 0xb,
+ MLX5_CQ_STATE_FIRED = 0xa,
+};
+
+enum {
+ MLX5_STAT_RATE_OFFSET = 5,
+};
+
+enum {
+ MLX5_INLINE_SEG = 0x80000000,
+};
+
+enum {
+ MLX5_PERM_LOCAL_READ = 1 << 2,
+ MLX5_PERM_LOCAL_WRITE = 1 << 3,
+ MLX5_PERM_REMOTE_READ = 1 << 4,
+ MLX5_PERM_REMOTE_WRITE = 1 << 5,
+ MLX5_PERM_ATOMIC = 1 << 6,
+ MLX5_PERM_UMR_EN = 1 << 7,
+};
+
+enum {
+ MLX5_PCIE_CTRL_SMALL_FENCE = 1 << 0,
+ MLX5_PCIE_CTRL_RELAXED_ORDERING = 1 << 2,
+ MLX5_PCIE_CTRL_NO_SNOOP = 1 << 3,
+ MLX5_PCIE_CTRL_TLP_PROCE_EN = 1 << 6,
+ MLX5_PCIE_CTRL_TPH_MASK = 3 << 4,
+};
+
+enum {
+ MLX5_ACCESS_MODE_PA = 0,
+ MLX5_ACCESS_MODE_MTT = 1,
+ MLX5_ACCESS_MODE_KLM = 2
+};
+
+enum {
+ MLX5_MKEY_REMOTE_INVAL = 1 << 24,
+ MLX5_MKEY_FLAG_SYNC_UMR = 1 << 29,
+ MLX5_MKEY_BSF_EN = 1 << 30,
+ MLX5_MKEY_LEN64 = 1 << 31,
+};
+
+enum {
+ MLX5_EN_RD = (u64)1,
+ MLX5_EN_WR = (u64)2
+};
+
+enum {
+ MLX5_BF_REGS_PER_PAGE = 4,
+ MLX5_MAX_UAR_PAGES = 1 << 8,
+ MLX5_MAX_UUARS = MLX5_MAX_UAR_PAGES * MLX5_BF_REGS_PER_PAGE,
+};
+
+enum {
+ MLX5_MKEY_MASK_LEN = 1ull << 0,
+ MLX5_MKEY_MASK_PAGE_SIZE = 1ull << 1,
+ MLX5_MKEY_MASK_START_ADDR = 1ull << 6,
+ MLX5_MKEY_MASK_PD = 1ull << 7,
+ MLX5_MKEY_MASK_EN_RINVAL = 1ull << 8,
+ MLX5_MKEY_MASK_BSF_EN = 1ull << 12,
+ MLX5_MKEY_MASK_KEY = 1ull << 13,
+ MLX5_MKEY_MASK_QPN = 1ull << 14,
+ MLX5_MKEY_MASK_LR = 1ull << 17,
+ MLX5_MKEY_MASK_LW = 1ull << 18,
+ MLX5_MKEY_MASK_RR = 1ull << 19,
+ MLX5_MKEY_MASK_RW = 1ull << 20,
+ MLX5_MKEY_MASK_A = 1ull << 21,
+ MLX5_MKEY_MASK_SMALL_FENCE = 1ull << 23,
+ MLX5_MKEY_MASK_FREE = 1ull << 29,
+};
+
+enum mlx5_event {
+ MLX5_EVENT_TYPE_COMP = 0x0,
+
+ MLX5_EVENT_TYPE_PATH_MIG = 0x01,
+ MLX5_EVENT_TYPE_COMM_EST = 0x02,
+ MLX5_EVENT_TYPE_SQ_DRAINED = 0x03,
+ MLX5_EVENT_TYPE_SRQ_LAST_WQE = 0x13,
+ MLX5_EVENT_TYPE_SRQ_RQ_LIMIT = 0x14,
+
+ MLX5_EVENT_TYPE_CQ_ERROR = 0x04,
+ MLX5_EVENT_TYPE_WQ_CATAS_ERROR = 0x05,
+ MLX5_EVENT_TYPE_PATH_MIG_FAILED = 0x07,
+ MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR = 0x10,
+ MLX5_EVENT_TYPE_WQ_ACCESS_ERROR = 0x11,
+ MLX5_EVENT_TYPE_SRQ_CATAS_ERROR = 0x12,
+
+ MLX5_EVENT_TYPE_INTERNAL_ERROR = 0x08,
+ MLX5_EVENT_TYPE_PORT_CHANGE = 0x09,
+ MLX5_EVENT_TYPE_GPIO_EVENT = 0x15,
+ MLX5_EVENT_TYPE_REMOTE_CONFIG = 0x19,
+
+ MLX5_EVENT_TYPE_DB_BF_CONGESTION = 0x1a,
+ MLX5_EVENT_TYPE_STALL_EVENT = 0x1b,
+
+ MLX5_EVENT_TYPE_CMD = 0x0a,
+ MLX5_EVENT_TYPE_PAGE_REQUEST = 0xb,
+};
+
+enum {
+ MLX5_PORT_CHANGE_SUBTYPE_DOWN = 1,
+ MLX5_PORT_CHANGE_SUBTYPE_ACTIVE = 4,
+ MLX5_PORT_CHANGE_SUBTYPE_INITIALIZED = 5,
+ MLX5_PORT_CHANGE_SUBTYPE_LID = 6,
+ MLX5_PORT_CHANGE_SUBTYPE_PKEY = 7,
+ MLX5_PORT_CHANGE_SUBTYPE_GUID = 8,
+ MLX5_PORT_CHANGE_SUBTYPE_CLIENT_REREG = 9,
+};
+
+enum {
+ MLX5_DEV_CAP_FLAG_RC = 1LL << 0,
+ MLX5_DEV_CAP_FLAG_UC = 1LL << 1,
+ MLX5_DEV_CAP_FLAG_UD = 1LL << 2,
+ MLX5_DEV_CAP_FLAG_XRC = 1LL << 3,
+ MLX5_DEV_CAP_FLAG_SRQ = 1LL << 6,
+ MLX5_DEV_CAP_FLAG_BAD_PKEY_CNTR = 1LL << 8,
+ MLX5_DEV_CAP_FLAG_BAD_QKEY_CNTR = 1LL << 9,
+ MLX5_DEV_CAP_FLAG_APM = 1LL << 17,
+ MLX5_DEV_CAP_FLAG_ATOMIC = 1LL << 18,
+ MLX5_DEV_CAP_FLAG_ON_DMND_PG = 1LL << 24,
+ MLX5_DEV_CAP_FLAG_RESIZE_SRQ = 1LL << 32,
+ MLX5_DEV_CAP_FLAG_REMOTE_FENCE = 1LL << 38,
+ MLX5_DEV_CAP_FLAG_TLP_HINTS = 1LL << 39,
+ MLX5_DEV_CAP_FLAG_SIG_HAND_OVER = 1LL << 40,
+ MLX5_DEV_CAP_FLAG_DCT = 1LL << 41,
+ MLX5_DEV_CAP_FLAG_CMDIF_CSUM = 1LL << 46,
+};
+
+enum {
+ MLX5_OPCODE_NOP = 0x00,
+ MLX5_OPCODE_SEND_INVAL = 0x01,
+ MLX5_OPCODE_RDMA_WRITE = 0x08,
+ MLX5_OPCODE_RDMA_WRITE_IMM = 0x09,
+ MLX5_OPCODE_SEND = 0x0a,
+ MLX5_OPCODE_SEND_IMM = 0x0b,
+ MLX5_OPCODE_RDMA_READ = 0x10,
+ MLX5_OPCODE_ATOMIC_CS = 0x11,
+ MLX5_OPCODE_ATOMIC_FA = 0x12,
+ MLX5_OPCODE_ATOMIC_MASKED_CS = 0x14,
+ MLX5_OPCODE_ATOMIC_MASKED_FA = 0x15,
+ MLX5_OPCODE_BIND_MW = 0x18,
+ MLX5_OPCODE_CONFIG_CMD = 0x1f,
+
+ MLX5_RECV_OPCODE_RDMA_WRITE_IMM = 0x00,
+ MLX5_RECV_OPCODE_SEND = 0x01,
+ MLX5_RECV_OPCODE_SEND_IMM = 0x02,
+ MLX5_RECV_OPCODE_SEND_INVAL = 0x03,
+
+ MLX5_CQE_OPCODE_ERROR = 0x1e,
+ MLX5_CQE_OPCODE_RESIZE = 0x16,
+
+ MLX5_OPCODE_SET_PSV = 0x20,
+ MLX5_OPCODE_GET_PSV = 0x21,
+ MLX5_OPCODE_CHECK_PSV = 0x22,
+ MLX5_OPCODE_RGET_PSV = 0x26,
+ MLX5_OPCODE_RCHECK_PSV = 0x27,
+
+ MLX5_OPCODE_UMR = 0x25,
+
+};
+
+enum {
+ MLX5_SET_PORT_RESET_QKEY = 0,
+ MLX5_SET_PORT_GUID0 = 16,
+ MLX5_SET_PORT_NODE_GUID = 17,
+ MLX5_SET_PORT_SYS_GUID = 18,
+ MLX5_SET_PORT_GID_TABLE = 19,
+ MLX5_SET_PORT_PKEY_TABLE = 20,
+};
+
+enum {
+ MLX5_MAX_PAGE_SHIFT = 31
+};
+
+struct mlx5_inbox_hdr {
+ __be16 opcode;
+ u8 rsvd[4];
+ __be16 opmod;
+};
+
+struct mlx5_outbox_hdr {
+ u8 status;
+ u8 rsvd[3];
+ __be32 syndrome;
+};
+
+struct mlx5_cmd_query_adapter_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+struct mlx5_cmd_query_adapter_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd0[24];
+ u8 intapin;
+ u8 rsvd1[13];
+ __be16 vsd_vendor_id;
+ u8 vsd[208];
+ u8 vsd_psid[16];
+};
+
+struct mlx5_hca_cap {
+ u8 rsvd1[16];
+ u8 log_max_srq_sz;
+ u8 log_max_qp_sz;
+ u8 rsvd2;
+ u8 log_max_qp;
+ u8 log_max_strq_sz;
+ u8 log_max_srqs;
+ u8 rsvd4[2];
+ u8 rsvd5;
+ u8 log_max_cq_sz;
+ u8 rsvd6;
+ u8 log_max_cq;
+ u8 log_max_eq_sz;
+ u8 log_max_mkey;
+ u8 rsvd7;
+ u8 log_max_eq;
+ u8 max_indirection;
+ u8 log_max_mrw_sz;
+ u8 log_max_bsf_list_sz;
+ u8 log_max_klm_list_sz;
+ u8 rsvd_8_0;
+ u8 log_max_ra_req_dc;
+ u8 rsvd_8_1;
+ u8 log_max_ra_res_dc;
+ u8 rsvd9;
+ u8 log_max_ra_req_qp;
+ u8 rsvd10;
+ u8 log_max_ra_res_qp;
+ u8 rsvd11[4];
+ __be16 max_qp_count;
+ __be16 rsvd12;
+ u8 rsvd13;
+ u8 local_ca_ack_delay;
+ u8 rsvd14;
+ u8 num_ports;
+ u8 log_max_msg;
+ u8 rsvd15[3];
+ __be16 stat_rate_support;
+ u8 rsvd16[2];
+ __be64 flags;
+ u8 rsvd17;
+ u8 uar_sz;
+ u8 rsvd18;
+ u8 log_pg_sz;
+ __be16 bf_log_bf_reg_size;
+ u8 rsvd19[4];
+ __be16 max_desc_sz_sq;
+ u8 rsvd20[2];
+ __be16 max_desc_sz_rq;
+ u8 rsvd21[2];
+ __be16 max_desc_sz_sq_dc;
+ u8 rsvd22[4];
+ __be16 max_qp_mcg;
+ u8 rsvd23;
+ u8 log_max_mcg;
+ u8 rsvd24;
+ u8 log_max_pd;
+ u8 rsvd25;
+ u8 log_max_xrcd;
+ u8 rsvd26[40];
+ __be32 uar_page_sz;
+ u8 rsvd27[28];
+ u8 log_msx_atomic_size_qp;
+ u8 rsvd28[2];
+ u8 log_msx_atomic_size_dc;
+ u8 rsvd29[76];
+};
+
+
+struct mlx5_cmd_query_hca_cap_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+
+struct mlx5_cmd_query_hca_cap_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd0[8];
+ struct mlx5_hca_cap hca_cap;
+};
+
+
+struct mlx5_cmd_set_hca_cap_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ u8 rsvd[8];
+ struct mlx5_hca_cap hca_cap;
+};
+
+
+struct mlx5_cmd_set_hca_cap_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd0[8];
+};
+
+
+struct mlx5_cmd_init_hca_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ u8 rsvd0[2];
+ __be16 profile;
+ u8 rsvd1[4];
+};
+
+struct mlx5_cmd_init_hca_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+struct mlx5_cmd_teardown_hca_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ u8 rsvd0[2];
+ __be16 profile;
+ u8 rsvd1[4];
+};
+
+struct mlx5_cmd_teardown_hca_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+struct mlx5_cmd_layout {
+ u8 type;
+ u8 rsvd0[3];
+ __be32 inlen;
+ __be64 in_ptr;
+ __be32 in[4];
+ __be32 out[4];
+ __be64 out_ptr;
+ __be32 outlen;
+ u8 token;
+ u8 sig;
+ u8 rsvd1;
+ u8 status_own;
+};
+
+
+struct health_buffer {
+ __be32 assert_var[5];
+ __be32 rsvd0[3];
+ __be32 assert_exit_ptr;
+ __be32 assert_callra;
+ __be32 rsvd1[2];
+ __be32 fw_ver;
+ __be32 hw_id;
+ __be32 rsvd2;
+ u8 irisc_index;
+ u8 synd;
+ __be16 ext_sync;
+};
+
+struct mlx5_init_seg {
+ __be32 fw_rev;
+ __be32 cmdif_rev_fw_sub;
+ __be32 rsvd0[2];
+ __be32 cmdq_addr_h;
+ __be32 cmdq_addr_l_sz;
+ __be32 cmd_dbell;
+ __be32 rsvd1[121];
+ struct health_buffer health;
+ __be32 rsvd2[884];
+ __be32 health_counter;
+ __be32 rsvd3[1023];
+ __be64 ieee1588_clk;
+ __be32 ieee1588_clk_type;
+ __be32 clr_intx;
+};
+
+struct mlx5_eqe_comp {
+ __be32 reserved[6];
+ __be32 cqn;
+};
+
+struct mlx5_eqe_qp_srq {
+ __be32 reserved[6];
+ __be32 qp_srq_n;
+};
+
+struct mlx5_eqe_cq_err {
+ __be32 cqn;
+ u8 reserved1[7];
+ u8 syndrome;
+};
+
+struct mlx5_eqe_dropped_packet {
+};
+
+struct mlx5_eqe_port_state {
+ u8 reserved0[8];
+ u8 port;
+};
+
+struct mlx5_eqe_gpio {
+ __be32 reserved0[2];
+ __be64 gpio_event;
+};
+
+struct mlx5_eqe_congestion {
+ u8 type;
+ u8 rsvd0;
+ u8 congestion_level;
+};
+
+struct mlx5_eqe_stall_vl {
+ u8 rsvd0[3];
+ u8 port_vl;
+};
+
+struct mlx5_eqe_cmd {
+ __be32 vector;
+ __be32 rsvd[6];
+};
+
+struct mlx5_eqe_page_req {
+ u8 rsvd0[2];
+ __be16 func_id;
+ u8 rsvd1[2];
+ __be16 num_pages;
+ __be32 rsvd2[5];
+};
+
+union ev_data {
+ __be32 raw[7];
+ struct mlx5_eqe_cmd cmd;
+ struct mlx5_eqe_comp comp;
+ struct mlx5_eqe_qp_srq qp_srq;
+ struct mlx5_eqe_cq_err cq_err;
+ struct mlx5_eqe_dropped_packet dp;
+ struct mlx5_eqe_port_state port;
+ struct mlx5_eqe_gpio gpio;
+ struct mlx5_eqe_congestion cong;
+ struct mlx5_eqe_stall_vl stall_vl;
+ struct mlx5_eqe_page_req req_pages;
+} __packed;
+
+struct mlx5_eqe {
+ u8 rsvd0;
+ u8 type;
+ u8 rsvd1;
+ u8 sub_type;
+ __be32 rsvd2[7];
+ union ev_data data;
+ __be16 rsvd3;
+ u8 signature;
+ u8 owner;
+} __packed;
+
+struct mlx5_cmd_prot_block {
+ u8 data[MLX5_CMD_DATA_BLOCK_SIZE];
+ u8 rsvd0[48];
+ __be64 next;
+ __be32 block_num;
+ u8 rsvd1;
+ u8 token;
+ u8 ctrl_sig;
+ u8 sig;
+};
+
+struct mlx5_err_cqe {
+ u8 rsvd0[32];
+ __be32 srqn;
+ u8 rsvd1[18];
+ u8 vendor_err_synd;
+ u8 syndrome;
+ __be32 s_wqe_opcode_qpn;
+ __be16 wqe_counter;
+ u8 signature;
+ u8 op_own;
+};
+
+struct mlx5_cqe64 {
+ u8 rsvd0[17];
+ u8 ml_path;
+ u8 rsvd20[4];
+ __be16 slid;
+ __be32 flags_rqpn;
+ u8 rsvd28[4];
+ __be32 srqn;
+ __be32 imm_inval_pkey;
+ u8 rsvd40[4];
+ __be32 byte_cnt;
+ __be64 timestamp;
+ __be32 sop_drop_qpn;
+ __be16 wqe_counter;
+ u8 signature;
+ u8 op_own;
+};
+
+struct mlx5_wqe_srq_next_seg {
+ u8 rsvd0[2];
+ __be16 next_wqe_index;
+ u8 signature;
+ u8 rsvd1[11];
+};
+
+union mlx5_ext_cqe {
+ struct ib_grh grh;
+ u8 inl[64];
+};
+
+struct mlx5_cqe128 {
+ union mlx5_ext_cqe inl_grh;
+ struct mlx5_cqe64 cqe64;
+};
+
+struct mlx5_srq_ctx {
+ u8 state_log_sz;
+ u8 rsvd0[3];
+ __be32 flags_xrcd;
+ __be32 pgoff_cqn;
+ u8 rsvd1[4];
+ u8 log_pg_sz;
+ u8 rsvd2[7];
+ __be32 pd;
+ __be16 lwm;
+ __be16 wqe_cnt;
+ u8 rsvd3[8];
+ __be64 db_record;
+};
+
+struct mlx5_create_srq_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 input_srqn;
+ u8 rsvd0[4];
+ struct mlx5_srq_ctx ctx;
+ u8 rsvd1[208];
+ __be64 pas[0];
+};
+
+struct mlx5_create_srq_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ __be32 srqn;
+ u8 rsvd[4];
+};
+
+struct mlx5_destroy_srq_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 srqn;
+ u8 rsvd[4];
+};
+
+struct mlx5_destroy_srq_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+struct mlx5_query_srq_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 srqn;
+ u8 rsvd0[4];
+};
+
+struct mlx5_query_srq_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd0[8];
+ struct mlx5_srq_ctx ctx;
+ u8 rsvd1[32];
+ __be64 pas[0];
+};
+
+struct mlx5_arm_srq_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 srqn;
+ __be16 rsvd;
+ __be16 lwm;
+};
+
+struct mlx5_arm_srq_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+struct mlx5_cq_context {
+ u8 status;
+ u8 cqe_sz_flags;
+ u8 st;
+ u8 rsvd3;
+ u8 rsvd4[6];
+ __be16 page_offset;
+ __be32 log_sz_usr_page;
+ __be16 cq_period;
+ __be16 cq_max_count;
+ __be16 rsvd20;
+ __be16 c_eqn;
+ u8 log_pg_sz;
+ u8 rsvd25[7];
+ __be32 last_notified_index;
+ __be32 solicit_producer_index;
+ __be32 consumer_counter;
+ __be32 producer_counter;
+ u8 rsvd48[8];
+ __be64 db_record_addr;
+};
+
+struct mlx5_create_cq_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 input_cqn;
+ u8 rsvdx[4];
+ struct mlx5_cq_context ctx;
+ u8 rsvd6[192];
+ __be64 pas[0];
+};
+
+struct mlx5_create_cq_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ __be32 cqn;
+ u8 rsvd0[4];
+};
+
+struct mlx5_destroy_cq_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 cqn;
+ u8 rsvd0[4];
+};
+
+struct mlx5_destroy_cq_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd0[8];
+};
+
+struct mlx5_query_cq_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 cqn;
+ u8 rsvd0[4];
+};
+
+struct mlx5_query_cq_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd0[8];
+ struct mlx5_cq_context ctx;
+ u8 rsvd6[16];
+ __be64 pas[0];
+};
+
+struct mlx5_eq_context {
+ u8 status;
+ u8 ec_oi;
+ u8 st;
+ u8 rsvd2[7];
+ __be16 page_pffset;
+ __be32 log_sz_usr_page;
+ u8 rsvd3[7];
+ u8 intr;
+ u8 log_page_size;
+ u8 rsvd4[15];
+ __be32 consumer_counter;
+ __be32 produser_counter;
+ u8 rsvd5[16];
+};
+
+struct mlx5_create_eq_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ u8 rsvd0[3];
+ u8 input_eqn;
+ u8 rsvd1[4];
+ struct mlx5_eq_context ctx;
+ u8 rsvd2[8];
+ __be64 events_mask;
+ u8 rsvd3[176];
+ __be64 pas[0];
+};
+
+struct mlx5_create_eq_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd0[3];
+ u8 eq_number;
+ u8 rsvd1[4];
+};
+
+struct mlx5_destroy_eq_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ u8 rsvd0[3];
+ u8 eqn;
+ u8 rsvd1[4];
+};
+
+struct mlx5_destroy_eq_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+struct mlx5_map_eq_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be64 mask;
+ u8 mu;
+ u8 rsvd0[2];
+ u8 eqn;
+ u8 rsvd1[24];
+};
+
+struct mlx5_map_eq_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+struct mlx5_query_eq_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ u8 rsvd0[3];
+ u8 eqn;
+ u8 rsvd1[4];
+};
+
+struct mlx5_query_eq_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd[8];
+ struct mlx5_eq_context ctx;
+};
+
+struct mlx5_mkey_seg {
+ /* This is a two bit field occupying bits 31-30.
+ * bit 31 is always 0,
+ * bit 30 is zero for regular MRs and 1 (e.g free) for UMRs that do not have tanslation
+ */
+ u8 status;
+ u8 pcie_control;
+ u8 flags;
+ u8 version;
+ __be32 qpn_mkey7_0;
+ u8 rsvd1[4];
+ __be32 flags_pd;
+ __be64 start_addr;
+ __be64 len;
+ __be32 bsfs_octo_size;
+ u8 rsvd2[16];
+ __be32 xlt_oct_size;
+ u8 rsvd3[3];
+ u8 log2_page_size;
+ u8 rsvd4[4];
+};
+
+struct mlx5_query_special_ctxs_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+struct mlx5_query_special_ctxs_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ __be32 dump_fill_mkey;
+ __be32 reserved_lkey;
+};
+
+struct mlx5_create_mkey_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 input_mkey_index;
+ u8 rsvd0[4];
+ struct mlx5_mkey_seg seg;
+ u8 rsvd1[16];
+ __be32 xlat_oct_act_size;
+ __be32 bsf_coto_act_size;
+ u8 rsvd2[168];
+ __be64 pas[0];
+};
+
+struct mlx5_create_mkey_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ __be32 mkey;
+ u8 rsvd[4];
+};
+
+struct mlx5_destroy_mkey_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 mkey;
+ u8 rsvd[4];
+};
+
+struct mlx5_destroy_mkey_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+struct mlx5_query_mkey_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 mkey;
+};
+
+struct mlx5_query_mkey_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ __be64 pas[0];
+};
+
+struct mlx5_modify_mkey_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 mkey;
+ __be64 pas[0];
+};
+
+struct mlx5_modify_mkey_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+};
+
+struct mlx5_dump_mkey_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+};
+
+struct mlx5_dump_mkey_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ __be32 mkey;
+};
+
+struct mlx5_mad_ifc_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be16 remote_lid;
+ u8 rsvd0;
+ u8 port;
+ u8 rsvd1[4];
+ u8 data[256];
+};
+
+struct mlx5_mad_ifc_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd[8];
+ u8 data[256];
+};
+
+struct mlx5_access_reg_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ u8 rsvd0[2];
+ __be16 register_id;
+ __be32 arg;
+ __be32 data[0];
+};
+
+struct mlx5_access_reg_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd[8];
+ __be32 data[0];
+};
+
+#define MLX5_ATTR_EXTENDED_PORT_INFO cpu_to_be16(0xff90)
+
+enum {
+ MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO = 1 << 0
+};
+
+#endif /* MLX5_DEVICE_H */
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef MLX5_DOORBELL_H
+#define MLX5_DOORBELL_H
+
+#define MLX5_BF_OFFSET 0x800
+#define MLX5_CQ_DOORBELL 0x20
+
+#if BITS_PER_LONG == 64
+/* Assume that we can just write a 64-bit doorbell atomically. s390
+ * actually doesn't have writeq() but S/390 systems don't even have
+ * PCI so we won't worry about it.
+ */
+
+#define MLX5_DECLARE_DOORBELL_LOCK(name)
+#define MLX5_INIT_DOORBELL_LOCK(ptr) do { } while (0)
+#define MLX5_GET_DOORBELL_LOCK(ptr) (NULL)
+
+static inline void mlx5_write64(__be32 val[2], void __iomem *dest,
+ spinlock_t *doorbell_lock)
+{
+ __raw_writeq(*(u64 *)val, dest);
+}
+
+#else
+
+/* Just fall back to a spinlock to protect the doorbell if
+ * BITS_PER_LONG is 32 -- there's no portable way to do atomic 64-bit
+ * MMIO writes.
+ */
+
+#define MLX5_DECLARE_DOORBELL_LOCK(name) spinlock_t name;
+#define MLX5_INIT_DOORBELL_LOCK(ptr) spin_lock_init(ptr)
+#define MLX5_GET_DOORBELL_LOCK(ptr) (ptr)
+
+static inline void mlx5_write64(__be32 val[2], void __iomem *dest,
+ spinlock_t *doorbell_lock)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(doorbell_lock, flags);
+ __raw_writel((__force u32) val[0], dest);
+ __raw_writel((__force u32) val[1], dest + 4);
+ spin_unlock_irqrestore(doorbell_lock, flags);
+}
+
+#endif
+
+#endif /* MLX5_DOORBELL_H */
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef MLX5_DRIVER_H
+#define MLX5_DRIVER_H
+
+#include <linux/kernel.h>
+#include <linux/completion.h>
+#include <linux/pci.h>
+#include <linux/spinlock_types.h>
+#include <linux/semaphore.h>
+#include <linux/vmalloc.h>
+#include <linux/radix-tree.h>
+#include <linux/mlx5/device.h>
+#include <linux/mlx5/doorbell.h>
+
+enum {
+ MLX5_BOARD_ID_LEN = 64,
+ MLX5_MAX_NAME_LEN = 16,
+};
+
+enum {
+ /* one minute for the sake of bringup. Generally, commands must always
+ * complete and we may need to increase this timeout value
+ */
+ MLX5_CMD_TIMEOUT_MSEC = 7200 * 1000,
+ MLX5_CMD_WQ_MAX_NAME = 32,
+};
+
+enum {
+ CMD_OWNER_SW = 0x0,
+ CMD_OWNER_HW = 0x1,
+ CMD_STATUS_SUCCESS = 0,
+};
+
+enum mlx5_sqp_t {
+ MLX5_SQP_SMI = 0,
+ MLX5_SQP_GSI = 1,
+ MLX5_SQP_IEEE_1588 = 2,
+ MLX5_SQP_SNIFFER = 3,
+ MLX5_SQP_SYNC_UMR = 4,
+};
+
+enum {
+ MLX5_MAX_PORTS = 2,
+};
+
+enum {
+ MLX5_EQ_VEC_PAGES = 0,
+ MLX5_EQ_VEC_CMD = 1,
+ MLX5_EQ_VEC_ASYNC = 2,
+ MLX5_EQ_VEC_COMP_BASE,
+};
+
+enum {
+ MLX5_MAX_EQ_NAME = 20
+};
+
+enum {
+ MLX5_ATOMIC_MODE_IB_COMP = 1 << 16,
+ MLX5_ATOMIC_MODE_CX = 2 << 16,
+ MLX5_ATOMIC_MODE_8B = 3 << 16,
+ MLX5_ATOMIC_MODE_16B = 4 << 16,
+ MLX5_ATOMIC_MODE_32B = 5 << 16,
+ MLX5_ATOMIC_MODE_64B = 6 << 16,
+ MLX5_ATOMIC_MODE_128B = 7 << 16,
+ MLX5_ATOMIC_MODE_256B = 8 << 16,
+};
+
+enum {
+ MLX5_CMD_OP_QUERY_HCA_CAP = 0x100,
+ MLX5_CMD_OP_QUERY_ADAPTER = 0x101,
+ MLX5_CMD_OP_INIT_HCA = 0x102,
+ MLX5_CMD_OP_TEARDOWN_HCA = 0x103,
+ MLX5_CMD_OP_QUERY_PAGES = 0x107,
+ MLX5_CMD_OP_MANAGE_PAGES = 0x108,
+ MLX5_CMD_OP_SET_HCA_CAP = 0x109,
+
+ MLX5_CMD_OP_CREATE_MKEY = 0x200,
+ MLX5_CMD_OP_QUERY_MKEY = 0x201,
+ MLX5_CMD_OP_DESTROY_MKEY = 0x202,
+ MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS = 0x203,
+
+ MLX5_CMD_OP_CREATE_EQ = 0x301,
+ MLX5_CMD_OP_DESTROY_EQ = 0x302,
+ MLX5_CMD_OP_QUERY_EQ = 0x303,
+
+ MLX5_CMD_OP_CREATE_CQ = 0x400,
+ MLX5_CMD_OP_DESTROY_CQ = 0x401,
+ MLX5_CMD_OP_QUERY_CQ = 0x402,
+ MLX5_CMD_OP_MODIFY_CQ = 0x403,
+
+ MLX5_CMD_OP_CREATE_QP = 0x500,
+ MLX5_CMD_OP_DESTROY_QP = 0x501,
+ MLX5_CMD_OP_RST2INIT_QP = 0x502,
+ MLX5_CMD_OP_INIT2RTR_QP = 0x503,
+ MLX5_CMD_OP_RTR2RTS_QP = 0x504,
+ MLX5_CMD_OP_RTS2RTS_QP = 0x505,
+ MLX5_CMD_OP_SQERR2RTS_QP = 0x506,
+ MLX5_CMD_OP_2ERR_QP = 0x507,
+ MLX5_CMD_OP_RTS2SQD_QP = 0x508,
+ MLX5_CMD_OP_SQD2RTS_QP = 0x509,
+ MLX5_CMD_OP_2RST_QP = 0x50a,
+ MLX5_CMD_OP_QUERY_QP = 0x50b,
+ MLX5_CMD_OP_CONF_SQP = 0x50c,
+ MLX5_CMD_OP_MAD_IFC = 0x50d,
+ MLX5_CMD_OP_INIT2INIT_QP = 0x50e,
+ MLX5_CMD_OP_SUSPEND_QP = 0x50f,
+ MLX5_CMD_OP_UNSUSPEND_QP = 0x510,
+ MLX5_CMD_OP_SQD2SQD_QP = 0x511,
+ MLX5_CMD_OP_ALLOC_QP_COUNTER_SET = 0x512,
+ MLX5_CMD_OP_DEALLOC_QP_COUNTER_SET = 0x513,
+ MLX5_CMD_OP_QUERY_QP_COUNTER_SET = 0x514,
+
+ MLX5_CMD_OP_CREATE_PSV = 0x600,
+ MLX5_CMD_OP_DESTROY_PSV = 0x601,
+ MLX5_CMD_OP_QUERY_PSV = 0x602,
+ MLX5_CMD_OP_QUERY_SIG_RULE_TABLE = 0x603,
+ MLX5_CMD_OP_QUERY_BLOCK_SIZE_TABLE = 0x604,
+
+ MLX5_CMD_OP_CREATE_SRQ = 0x700,
+ MLX5_CMD_OP_DESTROY_SRQ = 0x701,
+ MLX5_CMD_OP_QUERY_SRQ = 0x702,
+ MLX5_CMD_OP_ARM_RQ = 0x703,
+ MLX5_CMD_OP_RESIZE_SRQ = 0x704,
+
+ MLX5_CMD_OP_ALLOC_PD = 0x800,
+ MLX5_CMD_OP_DEALLOC_PD = 0x801,
+ MLX5_CMD_OP_ALLOC_UAR = 0x802,
+ MLX5_CMD_OP_DEALLOC_UAR = 0x803,
+
+ MLX5_CMD_OP_ATTACH_TO_MCG = 0x806,
+ MLX5_CMD_OP_DETACH_FROM_MCG = 0x807,
+
+
+ MLX5_CMD_OP_ALLOC_XRCD = 0x80e,
+ MLX5_CMD_OP_DEALLOC_XRCD = 0x80f,
+
+ MLX5_CMD_OP_ACCESS_REG = 0x805,
+ MLX5_CMD_OP_MAX = 0x810,
+};
+
+enum {
+ MLX5_REG_PCAP = 0x5001,
+ MLX5_REG_PMTU = 0x5003,
+ MLX5_REG_PTYS = 0x5004,
+ MLX5_REG_PAOS = 0x5006,
+ MLX5_REG_PMAOS = 0x5012,
+ MLX5_REG_PUDE = 0x5009,
+ MLX5_REG_PMPE = 0x5010,
+ MLX5_REG_PELC = 0x500e,
+ MLX5_REG_PMLP = 0, /* TBD */
+ MLX5_REG_NODE_DESC = 0x6001,
+ MLX5_REG_HOST_ENDIANNESS = 0x7004,
+};
+
+enum dbg_rsc_type {
+ MLX5_DBG_RSC_QP,
+ MLX5_DBG_RSC_EQ,
+ MLX5_DBG_RSC_CQ,
+};
+
+struct mlx5_field_desc {
+ struct dentry *dent;
+ int i;
+};
+
+struct mlx5_rsc_debug {
+ struct mlx5_core_dev *dev;
+ void *object;
+ enum dbg_rsc_type type;
+ struct dentry *root;
+ struct mlx5_field_desc fields[0];
+};
+
+enum mlx5_dev_event {
+ MLX5_DEV_EVENT_SYS_ERROR,
+ MLX5_DEV_EVENT_PORT_UP,
+ MLX5_DEV_EVENT_PORT_DOWN,
+ MLX5_DEV_EVENT_PORT_INITIALIZED,
+ MLX5_DEV_EVENT_LID_CHANGE,
+ MLX5_DEV_EVENT_PKEY_CHANGE,
+ MLX5_DEV_EVENT_GUID_CHANGE,
+ MLX5_DEV_EVENT_CLIENT_REREG,
+};
+
+struct mlx5_uuar_info {
+ struct mlx5_uar *uars;
+ int num_uars;
+ int num_low_latency_uuars;
+ unsigned long *bitmap;
+ unsigned int *count;
+ struct mlx5_bf *bfs;
+
+ /*
+ * protect uuar allocation data structs
+ */
+ struct mutex lock;
+};
+
+struct mlx5_bf {
+ void __iomem *reg;
+ void __iomem *regreg;
+ int buf_size;
+ struct mlx5_uar *uar;
+ unsigned long offset;
+ int need_lock;
+ /* protect blue flame buffer selection when needed
+ */
+ spinlock_t lock;
+
+ /* serialize 64 bit writes when done as two 32 bit accesses
+ */
+ spinlock_t lock32;
+ int uuarn;
+};
+
+struct mlx5_cmd_first {
+ __be32 data[4];
+};
+
+struct mlx5_cmd_msg {
+ struct list_head list;
+ struct cache_ent *cache;
+ u32 len;
+ struct mlx5_cmd_first first;
+ struct mlx5_cmd_mailbox *next;
+};
+
+struct mlx5_cmd_debug {
+ struct dentry *dbg_root;
+ struct dentry *dbg_in;
+ struct dentry *dbg_out;
+ struct dentry *dbg_outlen;
+ struct dentry *dbg_status;
+ struct dentry *dbg_run;
+ void *in_msg;
+ void *out_msg;
+ u8 status;
+ u16 inlen;
+ u16 outlen;
+};
+
+struct cache_ent {
+ /* protect block chain allocations
+ */
+ spinlock_t lock;
+ struct list_head head;
+};
+
+struct cmd_msg_cache {
+ struct cache_ent large;
+ struct cache_ent med;
+
+};
+
+struct mlx5_cmd_stats {
+ u64 sum;
+ u64 n;
+ struct dentry *root;
+ struct dentry *avg;
+ struct dentry *count;
+ /* protect command average calculations */
+ spinlock_t lock;
+};
+
+struct mlx5_cmd {
+ void *cmd_buf;
+ dma_addr_t dma;
+ u16 cmdif_rev;
+ u8 log_sz;
+ u8 log_stride;
+ int max_reg_cmds;
+ int events;
+ u32 __iomem *vector;
+
+ /* protect command queue allocations
+ */
+ spinlock_t alloc_lock;
+
+ /* protect token allocations
+ */
+ spinlock_t token_lock;
+ u8 token;
+ unsigned long bitmask;
+ char wq_name[MLX5_CMD_WQ_MAX_NAME];
+ struct workqueue_struct *wq;
+ struct semaphore sem;
+ struct semaphore pages_sem;
+ int mode;
+ struct mlx5_cmd_work_ent *ent_arr[MLX5_MAX_COMMANDS];
+ struct pci_pool *pool;
+ struct mlx5_cmd_debug dbg;
+ struct cmd_msg_cache cache;
+ int checksum_disabled;
+ struct mlx5_cmd_stats stats[MLX5_CMD_OP_MAX];
+};
+
+struct mlx5_port_caps {
+ int gid_table_len;
+ int pkey_table_len;
+};
+
+struct mlx5_caps {
+ u8 log_max_eq;
+ u8 log_max_cq;
+ u8 log_max_qp;
+ u8 log_max_mkey;
+ u8 log_max_pd;
+ u8 log_max_srq;
+ u32 max_cqes;
+ int max_wqes;
+ int max_sq_desc_sz;
+ int max_rq_desc_sz;
+ u64 flags;
+ u16 stat_rate_support;
+ int log_max_msg;
+ int num_ports;
+ int max_ra_res_qp;
+ int max_ra_req_qp;
+ int max_srq_wqes;
+ int bf_reg_size;
+ int bf_regs_per_page;
+ struct mlx5_port_caps port[MLX5_MAX_PORTS];
+ u8 ext_port_cap[MLX5_MAX_PORTS];
+ int max_vf;
+ u32 reserved_lkey;
+ u8 local_ca_ack_delay;
+ u8 log_max_mcg;
+ u16 max_qp_mcg;
+ int min_page_sz;
+};
+
+struct mlx5_cmd_mailbox {
+ void *buf;
+ dma_addr_t dma;
+ struct mlx5_cmd_mailbox *next;
+};
+
+struct mlx5_buf_list {
+ void *buf;
+ dma_addr_t map;
+};
+
+struct mlx5_buf {
+ struct mlx5_buf_list direct;
+ struct mlx5_buf_list *page_list;
+ int nbufs;
+ int npages;
+ int page_shift;
+ int size;
+};
+
+struct mlx5_eq {
+ struct mlx5_core_dev *dev;
+ __be32 __iomem *doorbell;
+ u32 cons_index;
+ struct mlx5_buf buf;
+ int size;
+ u8 irqn;
+ u8 eqn;
+ int nent;
+ u64 mask;
+ char name[MLX5_MAX_EQ_NAME];
+ struct list_head list;
+ int index;
+ struct mlx5_rsc_debug *dbg;
+};
+
+
+struct mlx5_core_mr {
+ u64 iova;
+ u64 size;
+ u32 key;
+ u32 pd;
+ u32 access;
+};
+
+struct mlx5_core_srq {
+ u32 srqn;
+ int max;
+ int max_gs;
+ int max_avail_gather;
+ int wqe_shift;
+ void (*event) (struct mlx5_core_srq *, enum mlx5_event);
+
+ atomic_t refcount;
+ struct completion free;
+};
+
+struct mlx5_eq_table {
+ void __iomem *update_ci;
+ void __iomem *update_arm_ci;
+ struct list_head *comp_eq_head;
+ struct mlx5_eq pages_eq;
+ struct mlx5_eq async_eq;
+ struct mlx5_eq cmd_eq;
+ struct msix_entry *msix_arr;
+ int num_comp_vectors;
+ /* protect EQs list
+ */
+ spinlock_t lock;
+};
+
+struct mlx5_uar {
+ u32 index;
+ struct list_head bf_list;
+ unsigned free_bf_bmap;
+ void __iomem *wc_map;
+ void __iomem *map;
+};
+
+
+struct mlx5_core_health {
+ struct health_buffer __iomem *health;
+ __be32 __iomem *health_counter;
+ struct timer_list timer;
+ struct list_head list;
+ u32 prev;
+ int miss_counter;
+};
+
+struct mlx5_cq_table {
+ /* protect radix tree
+ */
+ spinlock_t lock;
+ struct radix_tree_root tree;
+};
+
+struct mlx5_qp_table {
+ /* protect radix tree
+ */
+ spinlock_t lock;
+ struct radix_tree_root tree;
+};
+
+struct mlx5_srq_table {
+ /* protect radix tree
+ */
+ spinlock_t lock;
+ struct radix_tree_root tree;
+};
+
+struct mlx5_priv {
+ char name[MLX5_MAX_NAME_LEN];
+ struct mlx5_eq_table eq_table;
+ struct mlx5_uuar_info uuari;
+ MLX5_DECLARE_DOORBELL_LOCK(cq_uar_lock);
+
+ /* pages stuff */
+ struct workqueue_struct *pg_wq;
+ struct rb_root page_root;
+ int fw_pages;
+ int reg_pages;
+
+ struct mlx5_core_health health;
+
+ struct mlx5_srq_table srq_table;
+
+ /* start: qp staff */
+ struct mlx5_qp_table qp_table;
+ struct dentry *qp_debugfs;
+ struct dentry *eq_debugfs;
+ struct dentry *cq_debugfs;
+ struct dentry *cmdif_debugfs;
+ /* end: qp staff */
+
+ /* start: cq staff */
+ struct mlx5_cq_table cq_table;
+ /* end: cq staff */
+
+ /* start: alloc staff */
+ struct mutex pgdir_mutex;
+ struct list_head pgdir_list;
+ /* end: alloc staff */
+ struct dentry *dbg_root;
+
+ /* protect mkey key part */
+ spinlock_t mkey_lock;
+ u8 mkey_key;
+};
+
+struct mlx5_core_dev {
+ struct pci_dev *pdev;
+ u8 rev_id;
+ char board_id[MLX5_BOARD_ID_LEN];
+ struct mlx5_cmd cmd;
+ struct mlx5_caps caps;
+ phys_addr_t iseg_base;
+ struct mlx5_init_seg __iomem *iseg;
+ void (*event) (struct mlx5_core_dev *dev,
+ enum mlx5_dev_event event,
+ void *data);
+ struct mlx5_priv priv;
+ struct mlx5_profile *profile;
+ atomic_t num_qps;
+};
+
+struct mlx5_db {
+ __be32 *db;
+ union {
+ struct mlx5_db_pgdir *pgdir;
+ struct mlx5_ib_user_db_page *user_page;
+ } u;
+ dma_addr_t dma;
+ int index;
+};
+
+enum {
+ MLX5_DB_PER_PAGE = PAGE_SIZE / L1_CACHE_BYTES,
+};
+
+enum {
+ MLX5_COMP_EQ_SIZE = 1024,
+};
+
+struct mlx5_db_pgdir {
+ struct list_head list;
+ DECLARE_BITMAP(bitmap, MLX5_DB_PER_PAGE);
+ __be32 *db_page;
+ dma_addr_t db_dma;
+};
+
+typedef void (*mlx5_cmd_cbk_t)(int status, void *context);
+
+struct mlx5_cmd_work_ent {
+ struct mlx5_cmd_msg *in;
+ struct mlx5_cmd_msg *out;
+ mlx5_cmd_cbk_t callback;
+ void *context;
+ int idx;
+ struct completion done;
+ struct mlx5_cmd *cmd;
+ struct work_struct work;
+ struct mlx5_cmd_layout *lay;
+ int ret;
+ int page_queue;
+ u8 status;
+ u8 token;
+ struct timespec ts1;
+ struct timespec ts2;
+};
+
+struct mlx5_pas {
+ u64 pa;
+ u8 log_sz;
+};
+
+static inline void *mlx5_buf_offset(struct mlx5_buf *buf, int offset)
+{
+ if (likely(BITS_PER_LONG == 64 || buf->nbufs == 1))
+ return buf->direct.buf + offset;
+ else
+ return buf->page_list[offset >> PAGE_SHIFT].buf +
+ (offset & (PAGE_SIZE - 1));
+}
+
+extern struct workqueue_struct *mlx5_core_wq;
+
+#define STRUCT_FIELD(header, field) \
+ .struct_offset_bytes = offsetof(struct ib_unpacked_ ## header, field), \
+ .struct_size_bytes = sizeof((struct ib_unpacked_ ## header *)0)->field
+
+struct ib_field {
+ size_t struct_offset_bytes;
+ size_t struct_size_bytes;
+ int offset_bits;
+ int size_bits;
+};
+
+static inline struct mlx5_core_dev *pci2mlx5_core_dev(struct pci_dev *pdev)
+{
+ return pci_get_drvdata(pdev);
+}
+
+extern struct dentry *mlx5_debugfs_root;
+
+static inline u16 fw_rev_maj(struct mlx5_core_dev *dev)
+{
+ return ioread32be(&dev->iseg->fw_rev) & 0xffff;
+}
+
+static inline u16 fw_rev_min(struct mlx5_core_dev *dev)
+{
+ return ioread32be(&dev->iseg->fw_rev) >> 16;
+}
+
+static inline u16 fw_rev_sub(struct mlx5_core_dev *dev)
+{
+ return ioread32be(&dev->iseg->cmdif_rev_fw_sub) & 0xffff;
+}
+
+static inline u16 cmdif_rev(struct mlx5_core_dev *dev)
+{
+ return ioread32be(&dev->iseg->cmdif_rev_fw_sub) >> 16;
+}
+
+static inline void *mlx5_vzalloc(unsigned long size)
+{
+ void *rtn;
+
+ rtn = kzalloc(size, GFP_KERNEL | __GFP_NOWARN);
+ if (!rtn)
+ rtn = vzalloc(size);
+ return rtn;
+}
+
+static inline void mlx5_vfree(const void *addr)
+{
+ if (addr && is_vmalloc_addr(addr))
+ vfree(addr);
+ else
+ kfree(addr);
+}
+
+int mlx5_dev_init(struct mlx5_core_dev *dev, struct pci_dev *pdev);
+void mlx5_dev_cleanup(struct mlx5_core_dev *dev);
+int mlx5_cmd_init(struct mlx5_core_dev *dev);
+void mlx5_cmd_cleanup(struct mlx5_core_dev *dev);
+void mlx5_cmd_use_events(struct mlx5_core_dev *dev);
+void mlx5_cmd_use_polling(struct mlx5_core_dev *dev);
+int mlx5_cmd_status_to_err(struct mlx5_outbox_hdr *hdr);
+int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out,
+ int out_size);
+int mlx5_cmd_alloc_uar(struct mlx5_core_dev *dev, u32 *uarn);
+int mlx5_cmd_free_uar(struct mlx5_core_dev *dev, u32 uarn);
+int mlx5_alloc_uuars(struct mlx5_core_dev *dev, struct mlx5_uuar_info *uuari);
+int mlx5_free_uuars(struct mlx5_core_dev *dev, struct mlx5_uuar_info *uuari);
+void mlx5_health_cleanup(void);
+void __init mlx5_health_init(void);
+void mlx5_start_health_poll(struct mlx5_core_dev *dev);
+void mlx5_stop_health_poll(struct mlx5_core_dev *dev);
+int mlx5_buf_alloc(struct mlx5_core_dev *dev, int size, int max_direct,
+ struct mlx5_buf *buf);
+void mlx5_buf_free(struct mlx5_core_dev *dev, struct mlx5_buf *buf);
+struct mlx5_cmd_mailbox *mlx5_alloc_cmd_mailbox_chain(struct mlx5_core_dev *dev,
+ gfp_t flags, int npages);
+void mlx5_free_cmd_mailbox_chain(struct mlx5_core_dev *dev,
+ struct mlx5_cmd_mailbox *head);
+int mlx5_core_create_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
+ struct mlx5_create_srq_mbox_in *in, int inlen);
+int mlx5_core_destroy_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq);
+int mlx5_core_query_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
+ struct mlx5_query_srq_mbox_out *out);
+int mlx5_core_arm_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
+ u16 lwm, int is_srq);
+int mlx5_core_create_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
+ struct mlx5_create_mkey_mbox_in *in, int inlen);
+int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr);
+int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
+ struct mlx5_query_mkey_mbox_out *out, int outlen);
+int mlx5_core_dump_fill_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
+ u32 *mkey);
+int mlx5_core_alloc_pd(struct mlx5_core_dev *dev, u32 *pdn);
+int mlx5_core_dealloc_pd(struct mlx5_core_dev *dev, u32 pdn);
+int mlx5_core_mad_ifc(struct mlx5_core_dev *dev, void *inb, void *outb,
+ u16 opmod, int port);
+void mlx5_pagealloc_init(struct mlx5_core_dev *dev);
+void mlx5_pagealloc_cleanup(struct mlx5_core_dev *dev);
+int mlx5_pagealloc_start(struct mlx5_core_dev *dev);
+void mlx5_pagealloc_stop(struct mlx5_core_dev *dev);
+void mlx5_core_req_pages_handler(struct mlx5_core_dev *dev, u16 func_id,
+ s16 npages);
+int mlx5_satisfy_startup_pages(struct mlx5_core_dev *dev);
+int mlx5_reclaim_startup_pages(struct mlx5_core_dev *dev);
+void mlx5_register_debugfs(void);
+void mlx5_unregister_debugfs(void);
+int mlx5_eq_init(struct mlx5_core_dev *dev);
+void mlx5_eq_cleanup(struct mlx5_core_dev *dev);
+void mlx5_fill_page_array(struct mlx5_buf *buf, __be64 *pas);
+void mlx5_cq_completion(struct mlx5_core_dev *dev, u32 cqn);
+void mlx5_qp_event(struct mlx5_core_dev *dev, u32 qpn, int event_type);
+void mlx5_srq_event(struct mlx5_core_dev *dev, u32 srqn, int event_type);
+struct mlx5_core_srq *mlx5_core_get_srq(struct mlx5_core_dev *dev, u32 srqn);
+void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, unsigned long vector);
+void mlx5_cq_event(struct mlx5_core_dev *dev, u32 cqn, int event_type);
+int mlx5_create_map_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq, u8 vecidx,
+ int nent, u64 mask, const char *name, struct mlx5_uar *uar);
+int mlx5_destroy_unmap_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq);
+int mlx5_start_eqs(struct mlx5_core_dev *dev);
+int mlx5_stop_eqs(struct mlx5_core_dev *dev);
+int mlx5_core_attach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn);
+int mlx5_core_detach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn);
+
+int mlx5_qp_debugfs_init(struct mlx5_core_dev *dev);
+void mlx5_qp_debugfs_cleanup(struct mlx5_core_dev *dev);
+int mlx5_core_access_reg(struct mlx5_core_dev *dev, void *data_in,
+ int size_in, void *data_out, int size_out,
+ u16 reg_num, int arg, int write);
+int mlx5_set_port_caps(struct mlx5_core_dev *dev, int port_num, u32 caps);
+
+int mlx5_debug_eq_add(struct mlx5_core_dev *dev, struct mlx5_eq *eq);
+void mlx5_debug_eq_remove(struct mlx5_core_dev *dev, struct mlx5_eq *eq);
+int mlx5_core_eq_query(struct mlx5_core_dev *dev, struct mlx5_eq *eq,
+ struct mlx5_query_eq_mbox_out *out, int outlen);
+int mlx5_eq_debugfs_init(struct mlx5_core_dev *dev);
+void mlx5_eq_debugfs_cleanup(struct mlx5_core_dev *dev);
+int mlx5_cq_debugfs_init(struct mlx5_core_dev *dev);
+void mlx5_cq_debugfs_cleanup(struct mlx5_core_dev *dev);
+int mlx5_db_alloc(struct mlx5_core_dev *dev, struct mlx5_db *db);
+void mlx5_db_free(struct mlx5_core_dev *dev, struct mlx5_db *db);
+
+typedef void (*health_handler_t)(struct pci_dev *pdev, void *buf, int size);
+int mlx5_register_health_report_handler(health_handler_t handler);
+void mlx5_unregister_health_report_handler(void);
+const char *mlx5_command_str(int command);
+int mlx5_cmdif_debugfs_init(struct mlx5_core_dev *dev);
+void mlx5_cmdif_debugfs_cleanup(struct mlx5_core_dev *dev);
+
+static inline u32 mlx5_mkey_to_idx(u32 mkey)
+{
+ return mkey >> 8;
+}
+
+static inline u32 mlx5_idx_to_mkey(u32 mkey_idx)
+{
+ return mkey_idx << 8;
+}
+
+enum {
+ MLX5_PROF_MASK_QP_SIZE = (u64)1 << 0,
+ MLX5_PROF_MASK_CMDIF_CSUM = (u64)1 << 1,
+ MLX5_PROF_MASK_MR_CACHE = (u64)1 << 2,
+};
+
+enum {
+ MAX_MR_CACHE_ENTRIES = 16,
+};
+
+struct mlx5_profile {
+ u64 mask;
+ u32 log_max_qp;
+ int cmdif_csum;
+ struct {
+ int size;
+ int limit;
+ } mr_cache[MAX_MR_CACHE_ENTRIES];
+};
+
+#endif /* MLX5_DRIVER_H */
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef MLX5_QP_H
+#define MLX5_QP_H
+
+#include <linux/mlx5/device.h>
+#include <linux/mlx5/driver.h>
+
+#define MLX5_INVALID_LKEY 0x100
+
+enum mlx5_qp_optpar {
+ MLX5_QP_OPTPAR_ALT_ADDR_PATH = 1 << 0,
+ MLX5_QP_OPTPAR_RRE = 1 << 1,
+ MLX5_QP_OPTPAR_RAE = 1 << 2,
+ MLX5_QP_OPTPAR_RWE = 1 << 3,
+ MLX5_QP_OPTPAR_PKEY_INDEX = 1 << 4,
+ MLX5_QP_OPTPAR_Q_KEY = 1 << 5,
+ MLX5_QP_OPTPAR_RNR_TIMEOUT = 1 << 6,
+ MLX5_QP_OPTPAR_PRIMARY_ADDR_PATH = 1 << 7,
+ MLX5_QP_OPTPAR_SRA_MAX = 1 << 8,
+ MLX5_QP_OPTPAR_RRA_MAX = 1 << 9,
+ MLX5_QP_OPTPAR_PM_STATE = 1 << 10,
+ MLX5_QP_OPTPAR_RETRY_COUNT = 1 << 12,
+ MLX5_QP_OPTPAR_RNR_RETRY = 1 << 13,
+ MLX5_QP_OPTPAR_ACK_TIMEOUT = 1 << 14,
+ MLX5_QP_OPTPAR_PRI_PORT = 1 << 16,
+ MLX5_QP_OPTPAR_SRQN = 1 << 18,
+ MLX5_QP_OPTPAR_CQN_RCV = 1 << 19,
+ MLX5_QP_OPTPAR_DC_HS = 1 << 20,
+ MLX5_QP_OPTPAR_DC_KEY = 1 << 21,
+};
+
+enum mlx5_qp_state {
+ MLX5_QP_STATE_RST = 0,
+ MLX5_QP_STATE_INIT = 1,
+ MLX5_QP_STATE_RTR = 2,
+ MLX5_QP_STATE_RTS = 3,
+ MLX5_QP_STATE_SQER = 4,
+ MLX5_QP_STATE_SQD = 5,
+ MLX5_QP_STATE_ERR = 6,
+ MLX5_QP_STATE_SQ_DRAINING = 7,
+ MLX5_QP_STATE_SUSPENDED = 9,
+ MLX5_QP_NUM_STATE
+};
+
+enum {
+ MLX5_QP_ST_RC = 0x0,
+ MLX5_QP_ST_UC = 0x1,
+ MLX5_QP_ST_UD = 0x2,
+ MLX5_QP_ST_XRC = 0x3,
+ MLX5_QP_ST_MLX = 0x4,
+ MLX5_QP_ST_DCI = 0x5,
+ MLX5_QP_ST_DCT = 0x6,
+ MLX5_QP_ST_QP0 = 0x7,
+ MLX5_QP_ST_QP1 = 0x8,
+ MLX5_QP_ST_RAW_ETHERTYPE = 0x9,
+ MLX5_QP_ST_RAW_IPV6 = 0xa,
+ MLX5_QP_ST_SNIFFER = 0xb,
+ MLX5_QP_ST_SYNC_UMR = 0xe,
+ MLX5_QP_ST_PTP_1588 = 0xd,
+ MLX5_QP_ST_REG_UMR = 0xc,
+ MLX5_QP_ST_MAX
+};
+
+enum {
+ MLX5_QP_PM_MIGRATED = 0x3,
+ MLX5_QP_PM_ARMED = 0x0,
+ MLX5_QP_PM_REARM = 0x1
+};
+
+enum {
+ MLX5_NON_ZERO_RQ = 0 << 24,
+ MLX5_SRQ_RQ = 1 << 24,
+ MLX5_CRQ_RQ = 2 << 24,
+ MLX5_ZERO_LEN_RQ = 3 << 24
+};
+
+enum {
+ /* params1 */
+ MLX5_QP_BIT_SRE = 1 << 15,
+ MLX5_QP_BIT_SWE = 1 << 14,
+ MLX5_QP_BIT_SAE = 1 << 13,
+ /* params2 */
+ MLX5_QP_BIT_RRE = 1 << 15,
+ MLX5_QP_BIT_RWE = 1 << 14,
+ MLX5_QP_BIT_RAE = 1 << 13,
+ MLX5_QP_BIT_RIC = 1 << 4,
+};
+
+enum {
+ MLX5_WQE_CTRL_CQ_UPDATE = 2 << 2,
+ MLX5_WQE_CTRL_SOLICITED = 1 << 1,
+};
+
+enum {
+ MLX5_SEND_WQE_BB = 64,
+};
+
+enum {
+ MLX5_WQE_FMR_PERM_LOCAL_READ = 1 << 27,
+ MLX5_WQE_FMR_PERM_LOCAL_WRITE = 1 << 28,
+ MLX5_WQE_FMR_PERM_REMOTE_READ = 1 << 29,
+ MLX5_WQE_FMR_PERM_REMOTE_WRITE = 1 << 30,
+ MLX5_WQE_FMR_PERM_ATOMIC = 1 << 31
+};
+
+enum {
+ MLX5_FENCE_MODE_NONE = 0 << 5,
+ MLX5_FENCE_MODE_INITIATOR_SMALL = 1 << 5,
+ MLX5_FENCE_MODE_STRONG_ORDERING = 3 << 5,
+ MLX5_FENCE_MODE_SMALL_AND_FENCE = 4 << 5,
+};
+
+enum {
+ MLX5_QP_LAT_SENSITIVE = 1 << 28,
+ MLX5_QP_ENABLE_SIG = 1 << 31,
+};
+
+enum {
+ MLX5_RCV_DBR = 0,
+ MLX5_SND_DBR = 1,
+};
+
+struct mlx5_wqe_fmr_seg {
+ __be32 flags;
+ __be32 mem_key;
+ __be64 buf_list;
+ __be64 start_addr;
+ __be64 reg_len;
+ __be32 offset;
+ __be32 page_size;
+ u32 reserved[2];
+};
+
+struct mlx5_wqe_ctrl_seg {
+ __be32 opmod_idx_opcode;
+ __be32 qpn_ds;
+ u8 signature;
+ u8 rsvd[2];
+ u8 fm_ce_se;
+ __be32 imm;
+};
+
+struct mlx5_wqe_xrc_seg {
+ __be32 xrc_srqn;
+ u8 rsvd[12];
+};
+
+struct mlx5_wqe_masked_atomic_seg {
+ __be64 swap_add;
+ __be64 compare;
+ __be64 swap_add_mask;
+ __be64 compare_mask;
+};
+
+struct mlx5_av {
+ union {
+ struct {
+ __be32 qkey;
+ __be32 reserved;
+ } qkey;
+ __be64 dc_key;
+ } key;
+ __be32 dqp_dct;
+ u8 stat_rate_sl;
+ u8 fl_mlid;
+ __be16 rlid;
+ u8 reserved0[10];
+ u8 tclass;
+ u8 hop_limit;
+ __be32 grh_gid_fl;
+ u8 rgid[16];
+};
+
+struct mlx5_wqe_datagram_seg {
+ struct mlx5_av av;
+};
+
+struct mlx5_wqe_raddr_seg {
+ __be64 raddr;
+ __be32 rkey;
+ u32 reserved;
+};
+
+struct mlx5_wqe_atomic_seg {
+ __be64 swap_add;
+ __be64 compare;
+};
+
+struct mlx5_wqe_data_seg {
+ __be32 byte_count;
+ __be32 lkey;
+ __be64 addr;
+};
+
+struct mlx5_wqe_umr_ctrl_seg {
+ u8 flags;
+ u8 rsvd0[3];
+ __be16 klm_octowords;
+ __be16 bsf_octowords;
+ __be64 mkey_mask;
+ u8 rsvd1[32];
+};
+
+struct mlx5_seg_set_psv {
+ __be32 psv_num;
+ __be16 syndrome;
+ __be16 status;
+ __be32 transient_sig;
+ __be32 ref_tag;
+};
+
+struct mlx5_seg_get_psv {
+ u8 rsvd[19];
+ u8 num_psv;
+ __be32 l_key;
+ __be64 va;
+ __be32 psv_index[4];
+};
+
+struct mlx5_seg_check_psv {
+ u8 rsvd0[2];
+ __be16 err_coalescing_op;
+ u8 rsvd1[2];
+ __be16 xport_err_op;
+ u8 rsvd2[2];
+ __be16 xport_err_mask;
+ u8 rsvd3[7];
+ u8 num_psv;
+ __be32 l_key;
+ __be64 va;
+ __be32 psv_index[4];
+};
+
+struct mlx5_rwqe_sig {
+ u8 rsvd0[4];
+ u8 signature;
+ u8 rsvd1[11];
+};
+
+struct mlx5_wqe_signature_seg {
+ u8 rsvd0[4];
+ u8 signature;
+ u8 rsvd1[11];
+};
+
+struct mlx5_wqe_inline_seg {
+ __be32 byte_count;
+};
+
+struct mlx5_core_qp {
+ void (*event) (struct mlx5_core_qp *, int);
+ int qpn;
+ atomic_t refcount;
+ struct completion free;
+ struct mlx5_rsc_debug *dbg;
+ int pid;
+};
+
+struct mlx5_qp_path {
+ u8 fl;
+ u8 rsvd3;
+ u8 free_ar;
+ u8 pkey_index;
+ u8 rsvd0;
+ u8 grh_mlid;
+ __be16 rlid;
+ u8 ackto_lt;
+ u8 mgid_index;
+ u8 static_rate;
+ u8 hop_limit;
+ __be32 tclass_flowlabel;
+ u8 rgid[16];
+ u8 rsvd1[4];
+ u8 sl;
+ u8 port;
+ u8 rsvd2[6];
+};
+
+struct mlx5_qp_context {
+ __be32 flags;
+ __be32 flags_pd;
+ u8 mtu_msgmax;
+ u8 rq_size_stride;
+ __be16 sq_crq_size;
+ __be32 qp_counter_set_usr_page;
+ __be32 wire_qpn;
+ __be32 log_pg_sz_remote_qpn;
+ struct mlx5_qp_path pri_path;
+ struct mlx5_qp_path alt_path;
+ __be32 params1;
+ u8 reserved2[4];
+ __be32 next_send_psn;
+ __be32 cqn_send;
+ u8 reserved3[8];
+ __be32 last_acked_psn;
+ __be32 ssn;
+ __be32 params2;
+ __be32 rnr_nextrecvpsn;
+ __be32 xrcd;
+ __be32 cqn_recv;
+ __be64 db_rec_addr;
+ __be32 qkey;
+ __be32 rq_type_srqn;
+ __be32 rmsn;
+ __be16 hw_sq_wqe_counter;
+ __be16 sw_sq_wqe_counter;
+ __be16 hw_rcyclic_byte_counter;
+ __be16 hw_rq_counter;
+ __be16 sw_rcyclic_byte_counter;
+ __be16 sw_rq_counter;
+ u8 rsvd0[5];
+ u8 cgs;
+ u8 cs_req;
+ u8 cs_res;
+ __be64 dc_access_key;
+ u8 rsvd1[24];
+};
+
+struct mlx5_create_qp_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 input_qpn;
+ u8 rsvd0[4];
+ __be32 opt_param_mask;
+ u8 rsvd1[4];
+ struct mlx5_qp_context ctx;
+ u8 rsvd3[16];
+ __be64 pas[0];
+};
+
+struct mlx5_create_qp_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ __be32 qpn;
+ u8 rsvd0[4];
+};
+
+struct mlx5_destroy_qp_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 qpn;
+ u8 rsvd0[4];
+};
+
+struct mlx5_destroy_qp_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd0[8];
+};
+
+struct mlx5_modify_qp_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 qpn;
+ u8 rsvd1[4];
+ __be32 optparam;
+ u8 rsvd0[4];
+ struct mlx5_qp_context ctx;
+};
+
+struct mlx5_modify_qp_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd0[8];
+};
+
+struct mlx5_query_qp_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 qpn;
+ u8 rsvd[4];
+};
+
+struct mlx5_query_qp_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd1[8];
+ __be32 optparam;
+ u8 rsvd0[4];
+ struct mlx5_qp_context ctx;
+ u8 rsvd2[16];
+ __be64 pas[0];
+};
+
+struct mlx5_conf_sqp_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 qpn;
+ u8 rsvd[3];
+ u8 type;
+};
+
+struct mlx5_conf_sqp_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+struct mlx5_alloc_xrcd_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+struct mlx5_alloc_xrcd_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ __be32 xrcdn;
+ u8 rsvd[4];
+};
+
+struct mlx5_dealloc_xrcd_mbox_in {
+ struct mlx5_inbox_hdr hdr;
+ __be32 xrcdn;
+ u8 rsvd[4];
+};
+
+struct mlx5_dealloc_xrcd_mbox_out {
+ struct mlx5_outbox_hdr hdr;
+ u8 rsvd[8];
+};
+
+static inline struct mlx5_core_qp *__mlx5_qp_lookup(struct mlx5_core_dev *dev, u32 qpn)
+{
+ return radix_tree_lookup(&dev->priv.qp_table.tree, qpn);
+}
+
+int mlx5_core_create_qp(struct mlx5_core_dev *dev,
+ struct mlx5_core_qp *qp,
+ struct mlx5_create_qp_mbox_in *in,
+ int inlen);
+int mlx5_core_qp_modify(struct mlx5_core_dev *dev, enum mlx5_qp_state cur_state,
+ enum mlx5_qp_state new_state,
+ struct mlx5_modify_qp_mbox_in *in, int sqd_event,
+ struct mlx5_core_qp *qp);
+int mlx5_core_destroy_qp(struct mlx5_core_dev *dev,
+ struct mlx5_core_qp *qp);
+int mlx5_core_qp_query(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp,
+ struct mlx5_query_qp_mbox_out *out, int outlen);
+
+int mlx5_core_xrcd_alloc(struct mlx5_core_dev *dev, u32 *xrcdn);
+int mlx5_core_xrcd_dealloc(struct mlx5_core_dev *dev, u32 xrcdn);
+void mlx5_init_qp_table(struct mlx5_core_dev *dev);
+void mlx5_cleanup_qp_table(struct mlx5_core_dev *dev);
+int mlx5_debug_qp_add(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp);
+void mlx5_debug_qp_remove(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp);
+
+#endif /* MLX5_QP_H */
--- /dev/null
+/*
+ * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef MLX5_SRQ_H
+#define MLX5_SRQ_H
+
+#include <linux/mlx5/driver.h>
+
+void mlx5_init_srq_table(struct mlx5_core_dev *dev);
+void mlx5_cleanup_srq_table(struct mlx5_core_dev *dev);
+
+#endif /* MLX5_SRQ_H */
projects / cascardo / linux.git / commitdiff