2 * Copyright (c) 2006 - 2011 Intel Corporation. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/random.h>
37 #include <linux/highmem.h>
38 #include <linux/slab.h>
39 #include <asm/byteorder.h>
41 #include <rdma/ib_verbs.h>
42 #include <rdma/iw_cm.h>
43 #include <rdma/ib_user_verbs.h>
47 #include <rdma/ib_umem.h>
49 atomic_t mod_qp_timouts;
51 atomic_t sw_qps_destroyed;
53 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev);
58 static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd) {
59 struct nes_pd *nespd = to_nespd(ibpd);
60 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
61 struct nes_device *nesdev = nesvnic->nesdev;
62 struct nes_adapter *nesadapter = nesdev->nesadapter;
63 struct nes_cqp_request *cqp_request;
66 struct nes_hw_cqp_wqe *cqp_wqe;
70 u32 next_stag_index = 0;
74 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
75 stag_key = (u8)next_stag_index;
79 next_stag_index >>= 8;
80 next_stag_index %= nesadapter->max_mr;
82 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
83 nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_MW);
88 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
90 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
91 return ERR_PTR(-ENOMEM);
94 stag = stag_index << 8;
96 stag += (u32)stag_key;
98 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
101 /* Register the region with the adapter */
102 cqp_request = nes_get_cqp_request(nesdev);
103 if (cqp_request == NULL) {
105 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
106 return ERR_PTR(-ENOMEM);
109 cqp_request->waiting = 1;
110 cqp_wqe = &cqp_request->cqp_wqe;
112 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
113 cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
114 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
115 NES_CQP_STAG_REM_ACC_EN);
117 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
118 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
119 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
121 atomic_set(&cqp_request->refcount, 2);
122 nes_post_cqp_request(nesdev, cqp_request);
125 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
127 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
128 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
129 stag, ret, cqp_request->major_code, cqp_request->minor_code);
130 if ((!ret) || (cqp_request->major_code)) {
131 nes_put_cqp_request(nesdev, cqp_request);
133 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
135 return ERR_PTR(-ETIME);
137 return ERR_PTR(-ENOMEM);
140 nes_put_cqp_request(nesdev, cqp_request);
142 nesmr->ibmw.rkey = stag;
143 nesmr->mode = IWNES_MEMREG_TYPE_MW;
146 nesmr->pbls_used = 0;
155 static int nes_dealloc_mw(struct ib_mw *ibmw)
157 struct nes_mr *nesmr = to_nesmw(ibmw);
158 struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
159 struct nes_device *nesdev = nesvnic->nesdev;
160 struct nes_adapter *nesadapter = nesdev->nesadapter;
161 struct nes_hw_cqp_wqe *cqp_wqe;
162 struct nes_cqp_request *cqp_request;
166 /* Deallocate the window with the adapter */
167 cqp_request = nes_get_cqp_request(nesdev);
168 if (cqp_request == NULL) {
169 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
172 cqp_request->waiting = 1;
173 cqp_wqe = &cqp_request->cqp_wqe;
174 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
175 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
176 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
178 atomic_set(&cqp_request->refcount, 2);
179 nes_post_cqp_request(nesdev, cqp_request);
182 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
184 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
186 nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
187 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
188 ret, cqp_request->major_code, cqp_request->minor_code);
191 else if (cqp_request->major_code)
194 nes_put_cqp_request(nesdev, cqp_request);
196 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
197 (ibmw->rkey & 0x0fffff00) >> 8);
207 static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
208 struct ib_mw_bind *ibmw_bind)
211 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
212 struct nes_device *nesdev = nesvnic->nesdev;
213 /* struct nes_mr *nesmr = to_nesmw(ibmw); */
214 struct nes_qp *nesqp = to_nesqp(ibqp);
215 struct nes_hw_qp_wqe *wqe;
216 unsigned long flags = 0;
221 if (nesqp->ibqp_state > IB_QPS_RTS)
224 spin_lock_irqsave(&nesqp->lock, flags);
226 head = nesqp->hwqp.sq_head;
227 qsize = nesqp->hwqp.sq_tail;
229 /* Check for SQ overflow */
230 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
231 spin_unlock_irqrestore(&nesqp->lock, flags);
235 wqe = &nesqp->hwqp.sq_vbase[head];
236 /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
237 nes_fill_init_qp_wqe(wqe, nesqp, head);
238 u64temp = ibmw_bind->wr_id;
239 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
240 wqe_misc = NES_IWARP_SQ_OP_BIND;
242 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
244 if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
245 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
247 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_WRITE) {
248 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
250 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_READ) {
251 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
254 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
255 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX, ibmw_bind->mr->lkey);
256 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
257 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
259 wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
260 u64temp = (u64)ibmw_bind->addr;
261 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
267 nesqp->hwqp.sq_head = head;
270 nes_write32(nesdev->regs+NES_WQE_ALLOC,
271 (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
273 spin_unlock_irqrestore(&nesqp->lock, flags);
282 static int alloc_fast_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
283 u32 stag, u32 page_count)
285 struct nes_hw_cqp_wqe *cqp_wqe;
286 struct nes_cqp_request *cqp_request;
289 struct nes_adapter *nesadapter = nesdev->nesadapter;
292 u64 region_length = page_count * PAGE_SIZE;
295 cqp_request = nes_get_cqp_request(nesdev);
296 if (cqp_request == NULL) {
297 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
300 nes_debug(NES_DBG_MR, "alloc_fast_reg_mr: page_count = %d, "
301 "region_length = %llu\n",
302 page_count, region_length);
303 cqp_request->waiting = 1;
304 cqp_wqe = &cqp_request->cqp_wqe;
306 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
307 if (nesadapter->free_4kpbl > 0) {
308 nesadapter->free_4kpbl--;
309 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
311 /* No 4kpbl's available: */
312 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
313 nes_debug(NES_DBG_MR, "Out of Pbls\n");
314 nes_free_cqp_request(nesdev, cqp_request);
318 opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_MR |
319 NES_CQP_STAG_PBL_BLK_SIZE | NES_CQP_STAG_VA_TO |
320 NES_CQP_STAG_REM_ACC_EN;
322 * The current OFED API does not support the zero based TO option.
323 * If added then need to changed the NES_CQP_STAG_VA* option. Also,
324 * the API does not support that ability to have the MR set for local
325 * access only when created and not allow the SQ op to override. Given
326 * this the remote enable must be set here.
329 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
330 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
331 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, 1);
333 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
334 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
335 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
336 cpu_to_le32(nespd->pd_id & 0x00007fff);
338 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
339 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, 0);
340 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, 0);
341 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, 0);
342 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (page_count * 8));
343 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
346 atomic_set(&cqp_request->refcount, 2);
347 nes_post_cqp_request(nesdev, cqp_request);
350 ret = wait_event_timeout(cqp_request->waitq,
351 (0 != cqp_request->request_done),
354 nes_debug(NES_DBG_MR, "Allocate STag 0x%08X completed, "
355 "wait_event_timeout ret = %u, CQP Major:Minor codes = "
356 "0x%04X:0x%04X.\n", stag, ret, cqp_request->major_code,
357 cqp_request->minor_code);
358 major_code = cqp_request->major_code;
359 nes_put_cqp_request(nesdev, cqp_request);
361 if (!ret || major_code) {
362 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
363 nesadapter->free_4kpbl++;
364 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
375 * nes_alloc_fast_reg_mr
377 static struct ib_mr *nes_alloc_fast_reg_mr(struct ib_pd *ibpd, int max_page_list_len)
379 struct nes_pd *nespd = to_nespd(ibpd);
380 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
381 struct nes_device *nesdev = nesvnic->nesdev;
382 struct nes_adapter *nesadapter = nesdev->nesadapter;
389 struct nes_mr *nesmr;
394 * Note: Set to always use a fixed length single page entry PBL. This is to allow
395 * for the fast_reg_mr operation to always know the size of the PBL.
397 if (max_page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
398 return ERR_PTR(-E2BIG);
400 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
401 stag_key = (u8)next_stag_index;
402 next_stag_index >>= 8;
403 next_stag_index %= nesadapter->max_mr;
405 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
406 nesadapter->max_mr, &stag_index,
407 &next_stag_index, NES_RESOURCE_FAST_MR);
411 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
413 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
414 return ERR_PTR(-ENOMEM);
417 stag = stag_index << 8;
419 stag += (u32)stag_key;
421 nes_debug(NES_DBG_MR, "Allocating STag 0x%08X index = 0x%08X\n",
424 ret = alloc_fast_reg_mr(nesdev, nespd, stag, max_page_list_len);
427 nesmr->ibmr.rkey = stag;
428 nesmr->ibmr.lkey = stag;
429 nesmr->mode = IWNES_MEMREG_TYPE_FMEM;
433 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
434 ibmr = ERR_PTR(-ENOMEM);
440 * nes_alloc_fast_reg_page_list
442 static struct ib_fast_reg_page_list *nes_alloc_fast_reg_page_list(
443 struct ib_device *ibdev,
446 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
447 struct nes_device *nesdev = nesvnic->nesdev;
448 struct ib_fast_reg_page_list *pifrpl;
449 struct nes_ib_fast_reg_page_list *pnesfrpl;
451 if (page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
452 return ERR_PTR(-E2BIG);
454 * Allocate the ib_fast_reg_page_list structure, the
455 * nes_fast_bpl structure, and the PLB table.
457 pnesfrpl = kmalloc(sizeof(struct nes_ib_fast_reg_page_list) +
458 page_list_len * sizeof(u64), GFP_KERNEL);
461 return ERR_PTR(-ENOMEM);
463 pifrpl = &pnesfrpl->ibfrpl;
464 pifrpl->page_list = &pnesfrpl->pbl;
465 pifrpl->max_page_list_len = page_list_len;
467 * Allocate the WQE PBL
469 pnesfrpl->nes_wqe_pbl.kva = pci_alloc_consistent(nesdev->pcidev,
470 page_list_len * sizeof(u64),
471 &pnesfrpl->nes_wqe_pbl.paddr);
473 if (!pnesfrpl->nes_wqe_pbl.kva) {
475 return ERR_PTR(-ENOMEM);
477 nes_debug(NES_DBG_MR, "nes_alloc_fast_reg_pbl: nes_frpl = %p, "
478 "ibfrpl = %p, ibfrpl.page_list = %p, pbl.kva = %p, "
479 "pbl.paddr = %llx\n", pnesfrpl, &pnesfrpl->ibfrpl,
480 pnesfrpl->ibfrpl.page_list, pnesfrpl->nes_wqe_pbl.kva,
481 (unsigned long long) pnesfrpl->nes_wqe_pbl.paddr);
487 * nes_free_fast_reg_page_list
489 static void nes_free_fast_reg_page_list(struct ib_fast_reg_page_list *pifrpl)
491 struct nes_vnic *nesvnic = to_nesvnic(pifrpl->device);
492 struct nes_device *nesdev = nesvnic->nesdev;
493 struct nes_ib_fast_reg_page_list *pnesfrpl;
495 pnesfrpl = container_of(pifrpl, struct nes_ib_fast_reg_page_list, ibfrpl);
499 pci_free_consistent(nesdev->pcidev,
500 pifrpl->max_page_list_len * sizeof(u64),
501 pnesfrpl->nes_wqe_pbl.kva,
502 pnesfrpl->nes_wqe_pbl.paddr);
504 * Free the PBL structure
512 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
514 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
515 struct nes_device *nesdev = nesvnic->nesdev;
516 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
518 memset(props, 0, sizeof(*props));
519 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
521 props->fw_ver = nesdev->nesadapter->firmware_version;
522 props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
523 props->vendor_id = nesdev->nesadapter->vendor_id;
524 props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
525 props->hw_ver = nesdev->nesadapter->hw_rev;
526 props->max_mr_size = 0x80000000;
527 props->max_qp = nesibdev->max_qp;
528 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
529 props->max_sge = nesdev->nesadapter->max_sge;
530 props->max_cq = nesibdev->max_cq;
531 props->max_cqe = nesdev->nesadapter->max_cqe;
532 props->max_mr = nesibdev->max_mr;
533 props->max_mw = nesibdev->max_mr;
534 props->max_pd = nesibdev->max_pd;
535 props->max_sge_rd = 1;
536 switch (nesdev->nesadapter->max_irrq_wr) {
538 props->max_qp_rd_atom = 2;
541 props->max_qp_rd_atom = 8;
544 props->max_qp_rd_atom = 32;
547 props->max_qp_rd_atom = 64;
550 props->max_qp_rd_atom = 0;
552 props->max_qp_init_rd_atom = props->max_qp_rd_atom;
553 props->atomic_cap = IB_ATOMIC_NONE;
554 props->max_map_per_fmr = 1;
563 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
565 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
566 struct net_device *netdev = nesvnic->netdev;
568 memset(props, 0, sizeof(*props));
570 props->max_mtu = IB_MTU_4096;
572 if (netdev->mtu >= 4096)
573 props->active_mtu = IB_MTU_4096;
574 else if (netdev->mtu >= 2048)
575 props->active_mtu = IB_MTU_2048;
576 else if (netdev->mtu >= 1024)
577 props->active_mtu = IB_MTU_1024;
578 else if (netdev->mtu >= 512)
579 props->active_mtu = IB_MTU_512;
581 props->active_mtu = IB_MTU_256;
587 if (netif_queue_stopped(netdev))
588 props->state = IB_PORT_DOWN;
589 else if (nesvnic->linkup)
590 props->state = IB_PORT_ACTIVE;
592 props->state = IB_PORT_DOWN;
593 props->phys_state = 0;
594 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
595 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
596 props->gid_tbl_len = 1;
597 props->pkey_tbl_len = 1;
598 props->qkey_viol_cntr = 0;
599 props->active_width = IB_WIDTH_4X;
600 props->active_speed = IB_SPEED_SDR;
601 props->max_msg_sz = 0x80000000;
610 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
620 static int nes_query_gid(struct ib_device *ibdev, u8 port,
621 int index, union ib_gid *gid)
623 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
625 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
626 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
633 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
634 * of all objects associated with a particular user-mode client.
636 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
637 struct ib_udata *udata)
639 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
640 struct nes_device *nesdev = nesvnic->nesdev;
641 struct nes_adapter *nesadapter = nesdev->nesadapter;
642 struct nes_alloc_ucontext_req req;
643 struct nes_alloc_ucontext_resp uresp;
644 struct nes_ucontext *nes_ucontext;
645 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
648 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
649 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
650 return ERR_PTR(-EINVAL);
653 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
654 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
655 req.userspace_ver, NES_ABI_USERSPACE_VER);
656 return ERR_PTR(-EINVAL);
660 memset(&uresp, 0, sizeof uresp);
662 uresp.max_qps = nesibdev->max_qp;
663 uresp.max_pds = nesibdev->max_pd;
664 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
665 uresp.virtwq = nesadapter->virtwq;
666 uresp.kernel_ver = NES_ABI_KERNEL_VER;
668 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
670 return ERR_PTR(-ENOMEM);
672 nes_ucontext->nesdev = nesdev;
673 nes_ucontext->mmap_wq_offset = uresp.max_pds;
674 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
675 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
679 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
681 return ERR_PTR(-EFAULT);
684 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
685 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
686 atomic_set(&nes_ucontext->usecnt, 1);
687 return &nes_ucontext->ibucontext;
692 * nes_dealloc_ucontext
694 static int nes_dealloc_ucontext(struct ib_ucontext *context)
696 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
697 /* struct nes_device *nesdev = nesvnic->nesdev; */
698 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
700 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
710 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
713 struct nes_vnic *nesvnic = to_nesvnic(context->device);
714 struct nes_device *nesdev = nesvnic->nesdev;
715 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
716 struct nes_ucontext *nes_ucontext;
717 struct nes_qp *nesqp;
719 nes_ucontext = to_nesucontext(context);
722 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
723 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
724 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
725 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
726 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
727 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
730 nesqp = nes_ucontext->mmap_nesqp[index];
732 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
735 if (remap_pfn_range(vma, vma->vm_start,
736 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
737 vma->vm_end - vma->vm_start,
738 vma->vm_page_prot)) {
739 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
742 vma->vm_private_data = nesqp;
745 index = vma->vm_pgoff;
746 if (!test_bit(index, nes_ucontext->allocated_doorbells))
749 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
750 if (io_remap_pfn_range(vma, vma->vm_start,
751 (nesdev->doorbell_start +
752 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
753 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
755 vma->vm_private_data = nes_ucontext;
766 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
767 struct ib_ucontext *context, struct ib_udata *udata)
769 struct nes_pd *nespd;
770 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
771 struct nes_device *nesdev = nesvnic->nesdev;
772 struct nes_adapter *nesadapter = nesdev->nesadapter;
773 struct nes_ucontext *nesucontext;
774 struct nes_alloc_pd_resp uresp;
778 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
779 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
780 netdev_refcnt_read(nesvnic->netdev));
782 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
783 nesadapter->max_pd, &pd_num, &nesadapter->next_pd, NES_RESOURCE_PD);
788 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
790 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
791 return ERR_PTR(-ENOMEM);
794 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
795 nespd, nesvnic->nesibdev->ibdev.name);
797 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
800 nesucontext = to_nesucontext(context);
801 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
802 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
803 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
804 nespd->mmap_db_index, nespd->pd_id);
805 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
806 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
807 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
809 return ERR_PTR(-ENOMEM);
812 uresp.pd_id = nespd->pd_id;
813 uresp.mmap_db_index = nespd->mmap_db_index;
814 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
815 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
817 return ERR_PTR(-EFAULT);
820 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
821 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
822 nesucontext->first_free_db = nespd->mmap_db_index + 1;
825 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
833 static int nes_dealloc_pd(struct ib_pd *ibpd)
835 struct nes_ucontext *nesucontext;
836 struct nes_pd *nespd = to_nespd(ibpd);
837 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
838 struct nes_device *nesdev = nesvnic->nesdev;
839 struct nes_adapter *nesadapter = nesdev->nesadapter;
841 if ((ibpd->uobject) && (ibpd->uobject->context)) {
842 nesucontext = to_nesucontext(ibpd->uobject->context);
843 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
844 nespd->mmap_db_index);
845 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
846 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
847 if (nesucontext->first_free_db > nespd->mmap_db_index) {
848 nesucontext->first_free_db = nespd->mmap_db_index;
852 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
853 nespd->pd_id, nespd);
854 nes_free_resource(nesadapter, nesadapter->allocated_pds,
855 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
865 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
867 return ERR_PTR(-ENOSYS);
874 static int nes_destroy_ah(struct ib_ah *ah)
881 * nes_get_encoded_size
883 static inline u8 nes_get_encoded_size(int *size)
889 } else if (*size <= 128) {
892 } else if (*size <= 512) {
896 return (encoded_size);
904 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
905 struct nes_vnic *nesvnic, int sq_size, int rq_size)
912 struct nes_device *nesdev = nesvnic->nesdev;
913 struct nes_adapter *nesadapter = nesdev->nesadapter;
918 pbl_entries = nespbl->pbl_size >> 3;
919 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
920 nespbl->pbl_size, pbl_entries,
921 (void *)nespbl->pbl_vbase,
922 (unsigned long) nespbl->pbl_pbase);
923 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
924 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
925 /* the first pbl to be fro the rq_vbase... */
926 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
927 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
928 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
930 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
935 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
936 nesqp->page = nespbl->page;
937 if (!nesqp->hwqp.sq_vbase) {
938 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
943 /* Now to get to sq.. we need to calculate how many */
944 /* PBL entries were used by the rq.. */
945 pbl += sq_pbl_entries;
946 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
947 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
948 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
950 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
951 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
952 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
953 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
954 if (!nesadapter->free_256pbl) {
955 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
957 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
962 nesadapter->free_256pbl--;
963 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
965 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
966 pblbuffer = nesqp->pbl_vbase;
967 if (!nesqp->pbl_vbase) {
968 /* memory allocated during nes_reg_user_mr() */
969 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
972 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
973 nesadapter->free_256pbl++;
974 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
978 memset(nesqp->pbl_vbase, 0, 256);
979 /* fill in the page address in the pbl buffer.. */
980 tpbl = pblbuffer + 16;
981 pbl = (__le64 *)nespbl->pbl_vbase;
982 while (sq_pbl_entries--)
985 while (rq_pbl_entries--)
988 /* done with memory allocated during nes_reg_user_mr() */
989 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
994 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
995 /* Round up to a multiple of a page */
996 nesqp->qp_mem_size += PAGE_SIZE - 1;
997 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
999 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1000 &nesqp->hwqp.q2_pbase);
1003 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1004 nesqp->pbl_vbase = NULL;
1005 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1006 nesadapter->free_256pbl++;
1007 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1008 kunmap(nesqp->page);
1011 nesqp->sq_kmapped = 1;
1012 nesqp->hwqp.q2_vbase = mem;
1014 memset(nesqp->hwqp.q2_vbase, 0, 256);
1015 nesqp->nesqp_context = mem;
1016 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1017 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1026 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1027 int sq_size, int rq_size)
1030 struct nes_device *nesdev = nesvnic->nesdev;
1032 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1033 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1034 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1035 256; /* this is Q2 */
1036 /* Round up to a multiple of a page */
1037 nesqp->qp_mem_size += PAGE_SIZE - 1;
1038 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1040 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1041 &nesqp->hwqp.sq_pbase);
1044 nes_debug(NES_DBG_QP, "PCI consistent memory for "
1045 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1046 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1048 memset(mem, 0, nesqp->qp_mem_size);
1050 nesqp->hwqp.sq_vbase = mem;
1051 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1053 nesqp->hwqp.rq_vbase = mem;
1054 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1055 sizeof(struct nes_hw_qp_wqe) * sq_size;
1056 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1058 nesqp->hwqp.q2_vbase = mem;
1059 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1060 sizeof(struct nes_hw_qp_wqe) * rq_size;
1062 memset(nesqp->hwqp.q2_vbase, 0, 256);
1064 nesqp->nesqp_context = mem;
1065 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1066 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1072 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1074 static inline void nes_free_qp_mem(struct nes_device *nesdev,
1075 struct nes_qp *nesqp, int virt_wqs)
1077 unsigned long flags;
1078 struct nes_adapter *nesadapter = nesdev->nesadapter;
1080 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1081 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1083 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1084 nesadapter->free_256pbl++;
1085 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1086 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1087 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1088 nesqp->pbl_vbase = NULL;
1089 if (nesqp->sq_kmapped) {
1090 nesqp->sq_kmapped = 0;
1091 kunmap(nesqp->page);
1100 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1101 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1105 struct nes_pd *nespd = to_nespd(ibpd);
1106 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1107 struct nes_device *nesdev = nesvnic->nesdev;
1108 struct nes_adapter *nesadapter = nesdev->nesadapter;
1109 struct nes_qp *nesqp;
1110 struct nes_cq *nescq;
1111 struct nes_ucontext *nes_ucontext;
1112 struct nes_hw_cqp_wqe *cqp_wqe;
1113 struct nes_cqp_request *cqp_request;
1114 struct nes_create_qp_req req;
1115 struct nes_create_qp_resp uresp;
1116 struct nes_pbl *nespbl = NULL;
1119 /* u32 counter = 0; */
1121 unsigned long flags;
1131 if (init_attr->create_flags)
1132 return ERR_PTR(-EINVAL);
1134 atomic_inc(&qps_created);
1135 switch (init_attr->qp_type) {
1137 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1138 init_attr->cap.max_inline_data = 0;
1140 init_attr->cap.max_inline_data = 64;
1142 sq_size = init_attr->cap.max_send_wr;
1143 rq_size = init_attr->cap.max_recv_wr;
1145 /* check if the encoded sizes are OK or not... */
1146 sq_encoded_size = nes_get_encoded_size(&sq_size);
1147 rq_encoded_size = nes_get_encoded_size(&rq_size);
1149 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1150 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1152 return ERR_PTR(-EINVAL);
1155 init_attr->cap.max_send_wr = sq_size -2;
1156 init_attr->cap.max_recv_wr = rq_size -1;
1157 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1159 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1160 nesadapter->max_qp, &qp_num, &nesadapter->next_qp, NES_RESOURCE_QP);
1162 return ERR_PTR(ret);
1165 /* Need 512 (actually now 1024) byte alignment on this structure */
1166 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1168 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1169 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1170 return ERR_PTR(-ENOMEM);
1172 u64nesqp = (unsigned long)mem;
1173 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1174 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1175 u64nesqp &= ~u64temp;
1176 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1177 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1178 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1179 nesqp->allocated_buffer = mem;
1182 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1183 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1184 kfree(nesqp->allocated_buffer);
1185 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1188 if (req.user_wqe_buffers) {
1191 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1192 nesqp->user_mode = 1;
1193 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1196 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1197 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1198 list_del(&nespbl->list);
1200 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1201 nespbl, nespbl->user_base);
1206 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1207 (long long unsigned int)req.user_wqe_buffers);
1208 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1209 kfree(nesqp->allocated_buffer);
1210 return ERR_PTR(-EFAULT);
1214 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1215 nesqp->mmap_sq_db_index =
1216 find_next_zero_bit(nes_ucontext->allocated_wqs,
1217 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1218 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1219 nespd->mmap_db_index); */
1220 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1221 nes_debug(NES_DBG_QP,
1222 "db index > max user regions, failing create QP\n");
1223 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1225 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1229 kfree(nesqp->allocated_buffer);
1230 return ERR_PTR(-ENOMEM);
1232 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1233 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1234 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1236 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1237 kfree(nesqp->allocated_buffer);
1238 return ERR_PTR(-EFAULT);
1241 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1242 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1244 nes_debug(NES_DBG_QP,
1245 "error geting qp mem code = %d\n", err);
1246 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1247 kfree(nesqp->allocated_buffer);
1248 return ERR_PTR(-ENOMEM);
1251 nesqp->hwqp.sq_size = sq_size;
1252 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1253 nesqp->hwqp.sq_head = 1;
1254 nesqp->hwqp.rq_size = rq_size;
1255 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1256 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1257 (void *)nesqp->nesqp_context_pbase);
1259 nesqp->hwqp.qp_id = qp_num;
1260 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1261 nesqp->nespd = nespd;
1263 nescq = to_nescq(init_attr->send_cq);
1264 nesqp->nesscq = nescq;
1265 nescq = to_nescq(init_attr->recv_cq);
1266 nesqp->nesrcq = nescq;
1268 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1269 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1270 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1271 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1272 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1273 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1275 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1276 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1278 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1279 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1280 u64temp = (u64)nesqp->hwqp.sq_pbase;
1281 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1282 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1286 u64temp = (u64)nesqp->hwqp.sq_pbase;
1287 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1288 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1289 u64temp = (u64)nesqp->hwqp.rq_pbase;
1290 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1291 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1293 u64temp = (u64)nesqp->pbl_pbase;
1294 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1295 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1298 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1299 nesvnic->next_qp_nic_index,
1300 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1301 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1302 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1303 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1304 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1305 nesvnic->next_qp_nic_index++;
1306 if ((nesvnic->next_qp_nic_index > 3) ||
1307 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1308 nesvnic->next_qp_nic_index = 0;
1310 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1312 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1313 u64temp = (u64)nesqp->hwqp.q2_pbase;
1314 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1315 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1316 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1317 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1318 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1319 NES_QPCONTEXT_ORDIRD_AAH |
1320 ((((u32)nesadapter->max_irrq_wr) <<
1321 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1322 if (disable_mpa_crc) {
1323 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1324 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1329 cqp_request = nes_get_cqp_request(nesdev);
1330 if (cqp_request == NULL) {
1331 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1332 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1333 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1334 kfree(nesqp->allocated_buffer);
1335 return ERR_PTR(-ENOMEM);
1337 cqp_request->waiting = 1;
1338 cqp_wqe = &cqp_request->cqp_wqe;
1341 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1342 NES_CQP_QP_IWARP_STATE_IDLE;
1344 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1345 NES_CQP_QP_IWARP_STATE_IDLE;
1347 opcode |= NES_CQP_QP_CQS_VALID;
1348 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1349 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1350 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1352 u64temp = (u64)nesqp->nesqp_context_pbase;
1353 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1355 atomic_set(&cqp_request->refcount, 2);
1356 nes_post_cqp_request(nesdev, cqp_request);
1359 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1361 ret = wait_event_timeout(cqp_request->waitq,
1362 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1363 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1364 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1365 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1366 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1367 cqp_request->major_code, cqp_request->minor_code);
1368 if ((!ret) || (cqp_request->major_code)) {
1369 nes_put_cqp_request(nesdev, cqp_request);
1370 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1371 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1372 kfree(nesqp->allocated_buffer);
1374 return ERR_PTR(-ETIME);
1376 return ERR_PTR(-EIO);
1380 nes_put_cqp_request(nesdev, cqp_request);
1382 if (ibpd->uobject) {
1383 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1384 uresp.actual_sq_size = sq_size;
1385 uresp.actual_rq_size = rq_size;
1386 uresp.qp_id = nesqp->hwqp.qp_id;
1387 uresp.nes_drv_opt = nes_drv_opt;
1388 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1389 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1390 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1391 kfree(nesqp->allocated_buffer);
1392 return ERR_PTR(-EFAULT);
1396 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1397 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1398 spin_lock_init(&nesqp->lock);
1399 nes_add_ref(&nesqp->ibqp);
1402 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1403 return ERR_PTR(-EINVAL);
1406 nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR);
1407 init_timer(&nesqp->terminate_timer);
1408 nesqp->terminate_timer.function = nes_terminate_timeout;
1409 nesqp->terminate_timer.data = (unsigned long)nesqp;
1411 /* update the QP table */
1412 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1413 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1414 netdev_refcnt_read(nesvnic->netdev));
1416 return &nesqp->ibqp;
1422 static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq)
1428 unsigned long flags = 0;
1430 spin_lock_irqsave(&nescq->lock, flags);
1432 cq_head = nescq->hw_cq.cq_head;
1433 while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
1435 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
1436 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]);
1437 u64temp = (((u64)hi) << 32) | ((u64)lo);
1438 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1);
1439 if (u64temp == (u64)(unsigned long)nesqp) {
1440 /* Zero the context value so cqe will be ignored */
1441 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0;
1442 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0;
1445 if (++cq_head >= nescq->hw_cq.cq_size)
1449 spin_unlock_irqrestore(&nescq->lock, flags);
1456 static int nes_destroy_qp(struct ib_qp *ibqp)
1458 struct nes_qp *nesqp = to_nesqp(ibqp);
1459 struct nes_ucontext *nes_ucontext;
1460 struct ib_qp_attr attr;
1461 struct iw_cm_id *cm_id;
1462 struct iw_cm_event cm_event;
1465 atomic_inc(&sw_qps_destroyed);
1466 nesqp->destroyed = 1;
1468 /* Blow away the connection if it exists. */
1469 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1470 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1471 attr.qp_state = IB_QPS_ERR;
1472 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1475 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1476 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1477 cm_id = nesqp->cm_id;
1478 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1479 cm_event.status = -ETIMEDOUT;
1480 cm_event.local_addr = cm_id->local_addr;
1481 cm_event.remote_addr = cm_id->remote_addr;
1482 cm_event.private_data = NULL;
1483 cm_event.private_data_len = 0;
1485 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1486 "QP%u. cm_id = %p, refcount = %u. \n",
1487 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1489 cm_id->rem_ref(cm_id);
1490 ret = cm_id->event_handler(cm_id, &cm_event);
1492 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1495 if (nesqp->user_mode) {
1496 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1497 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1498 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1499 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1500 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1501 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1504 if (nesqp->pbl_pbase && nesqp->sq_kmapped) {
1505 nesqp->sq_kmapped = 0;
1506 kunmap(nesqp->page);
1509 /* Clean any pending completions from the cq(s) */
1511 nes_clean_cq(nesqp, nesqp->nesscq);
1513 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq))
1514 nes_clean_cq(nesqp, nesqp->nesrcq);
1516 nes_rem_ref(&nesqp->ibqp);
1524 static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
1526 struct ib_ucontext *context, struct ib_udata *udata)
1529 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1530 struct nes_device *nesdev = nesvnic->nesdev;
1531 struct nes_adapter *nesadapter = nesdev->nesadapter;
1532 struct nes_cq *nescq;
1533 struct nes_ucontext *nes_ucontext = NULL;
1534 struct nes_cqp_request *cqp_request;
1536 struct nes_hw_cqp_wqe *cqp_wqe;
1537 struct nes_pbl *nespbl = NULL;
1538 struct nes_create_cq_req req;
1539 struct nes_create_cq_resp resp;
1542 u32 pbl_entries = 1;
1544 unsigned long flags;
1547 if (entries > nesadapter->max_cqe)
1548 return ERR_PTR(-EINVAL);
1550 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1551 nesadapter->max_cq, &cq_num, &nesadapter->next_cq, NES_RESOURCE_CQ);
1553 return ERR_PTR(err);
1556 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1558 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1559 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1560 return ERR_PTR(-ENOMEM);
1563 nescq->hw_cq.cq_size = max(entries + 1, 5);
1564 nescq->hw_cq.cq_number = cq_num;
1565 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1569 nes_ucontext = to_nesucontext(context);
1570 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1571 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1573 return ERR_PTR(-EFAULT);
1575 nesvnic->mcrq_ucontext = nes_ucontext;
1576 nes_ucontext->mcrqf = req.mcrqf;
1577 if (nes_ucontext->mcrqf) {
1578 if (nes_ucontext->mcrqf & 0x80000000)
1579 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1580 else if (nes_ucontext->mcrqf & 0x40000000)
1581 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1583 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1584 nescq->mcrqf = nes_ucontext->mcrqf;
1585 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1587 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1588 (unsigned long)req.user_cq_buffer, entries);
1590 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1591 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1592 list_del(&nespbl->list);
1594 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1600 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1602 return ERR_PTR(-EFAULT);
1605 pbl_entries = nespbl->pbl_size >> 3;
1606 nescq->cq_mem_size = 0;
1608 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1609 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1610 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1612 /* allocate the physical buffer space */
1613 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1614 &nescq->hw_cq.cq_pbase);
1616 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1617 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1619 return ERR_PTR(-ENOMEM);
1622 memset(mem, 0, nescq->cq_mem_size);
1623 nescq->hw_cq.cq_vbase = mem;
1624 nescq->hw_cq.cq_head = 0;
1625 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1626 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1627 (u32)nescq->hw_cq.cq_pbase);
1630 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1631 spin_lock_init(&nescq->lock);
1633 /* send CreateCQ request to CQP */
1634 cqp_request = nes_get_cqp_request(nesdev);
1635 if (cqp_request == NULL) {
1636 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1638 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1639 nescq->hw_cq.cq_pbase);
1641 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1642 nespbl->pbl_vbase, nespbl->pbl_pbase);
1646 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1648 return ERR_PTR(-ENOMEM);
1650 cqp_request->waiting = 1;
1651 cqp_wqe = &cqp_request->cqp_wqe;
1653 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1654 NES_CQP_CQ_CHK_OVERFLOW |
1655 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1657 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1659 if (pbl_entries != 1) {
1660 if (pbl_entries > 32) {
1662 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1663 if (nesadapter->free_4kpbl == 0) {
1664 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1665 nes_free_cqp_request(nesdev, cqp_request);
1667 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1668 nescq->hw_cq.cq_pbase);
1670 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1671 nespbl->pbl_vbase, nespbl->pbl_pbase);
1674 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1676 return ERR_PTR(-ENOMEM);
1678 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1679 nescq->virtual_cq = 2;
1680 nesadapter->free_4kpbl--;
1683 /* use 256 byte pbl */
1684 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1685 if (nesadapter->free_256pbl == 0) {
1686 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1687 nes_free_cqp_request(nesdev, cqp_request);
1689 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1690 nescq->hw_cq.cq_pbase);
1692 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1693 nespbl->pbl_vbase, nespbl->pbl_pbase);
1696 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1698 return ERR_PTR(-ENOMEM);
1700 opcode |= NES_CQP_CQ_VIRT;
1701 nescq->virtual_cq = 1;
1702 nesadapter->free_256pbl--;
1707 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1709 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1710 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1711 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1712 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1715 if (pbl_entries != 1)
1716 u64temp = (u64)nespbl->pbl_pbase;
1718 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1719 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1720 nes_ucontext->mmap_db_index[0]);
1722 u64temp = (u64)nescq->hw_cq.cq_pbase;
1723 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1725 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1726 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1727 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1728 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1729 cpu_to_le32((u32)(u64temp >> 1));
1730 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1731 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1733 atomic_set(&cqp_request->refcount, 2);
1734 nes_post_cqp_request(nesdev, cqp_request);
1737 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1738 nescq->hw_cq.cq_number);
1739 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1740 NES_EVENT_TIMEOUT * 2);
1741 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1742 nescq->hw_cq.cq_number, ret);
1743 if ((!ret) || (cqp_request->major_code)) {
1744 nes_put_cqp_request(nesdev, cqp_request);
1746 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1747 nescq->hw_cq.cq_pbase);
1749 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1750 nespbl->pbl_vbase, nespbl->pbl_pbase);
1753 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1755 return ERR_PTR(-EIO);
1757 nes_put_cqp_request(nesdev, cqp_request);
1760 /* free the nespbl */
1761 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1764 resp.cq_id = nescq->hw_cq.cq_number;
1765 resp.cq_size = nescq->hw_cq.cq_size;
1766 resp.mmap_db_index = 0;
1767 if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
1768 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1770 return ERR_PTR(-EFAULT);
1774 return &nescq->ibcq;
1781 static int nes_destroy_cq(struct ib_cq *ib_cq)
1783 struct nes_cq *nescq;
1784 struct nes_device *nesdev;
1785 struct nes_vnic *nesvnic;
1786 struct nes_adapter *nesadapter;
1787 struct nes_hw_cqp_wqe *cqp_wqe;
1788 struct nes_cqp_request *cqp_request;
1789 unsigned long flags;
1796 nescq = to_nescq(ib_cq);
1797 nesvnic = to_nesvnic(ib_cq->device);
1798 nesdev = nesvnic->nesdev;
1799 nesadapter = nesdev->nesadapter;
1801 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1803 /* Send DestroyCQ request to CQP */
1804 cqp_request = nes_get_cqp_request(nesdev);
1805 if (cqp_request == NULL) {
1806 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1809 cqp_request->waiting = 1;
1810 cqp_wqe = &cqp_request->cqp_wqe;
1811 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1812 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1813 if (nescq->virtual_cq == 1) {
1814 nesadapter->free_256pbl++;
1815 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1816 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1817 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1819 } else if (nescq->virtual_cq == 2) {
1820 nesadapter->free_4kpbl++;
1821 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1822 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1823 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1825 opcode |= NES_CQP_CQ_4KB_CHUNK;
1828 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1830 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1831 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1832 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1833 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1835 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1837 atomic_set(&cqp_request->refcount, 2);
1838 nes_post_cqp_request(nesdev, cqp_request);
1841 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1842 nescq->hw_cq.cq_number);
1843 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1845 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1846 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1847 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1848 cqp_request->minor_code);
1850 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1851 nescq->hw_cq.cq_number);
1853 } else if (cqp_request->major_code) {
1854 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1855 nescq->hw_cq.cq_number);
1860 nes_put_cqp_request(nesdev, cqp_request);
1862 if (nescq->cq_mem_size)
1863 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1864 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1873 static u32 root_256(struct nes_device *nesdev,
1874 struct nes_root_vpbl *root_vpbl,
1875 struct nes_root_vpbl *new_root,
1881 if (pbl_count_4k == 1) {
1882 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1883 512, &new_root->pbl_pbase);
1885 if (new_root->pbl_vbase == NULL)
1888 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1889 for (i = 0; i < 16; i++) {
1890 new_root->pbl_vbase[i].pa_low =
1891 cpu_to_le32((u32)leaf_pbl);
1892 new_root->pbl_vbase[i].pa_high =
1893 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1897 for (i = 3; i >= 0; i--) {
1899 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1900 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1901 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1903 for (k = 1; k < 16; k++) {
1905 root_vpbl->pbl_vbase[j + k].pa_low =
1906 cpu_to_le32((u32)leaf_pbl);
1907 root_vpbl->pbl_vbase[j + k].pa_high =
1908 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1920 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1921 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1922 dma_addr_t single_buffer, u16 pbl_count_4k,
1923 u16 residual_page_count_4k, int acc, u64 *iova_start,
1924 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1926 struct nes_hw_cqp_wqe *cqp_wqe;
1927 struct nes_cqp_request *cqp_request;
1928 unsigned long flags;
1930 struct nes_adapter *nesadapter = nesdev->nesadapter;
1932 u16 pbl_count_256 = 0;
1934 u8 use_256_pbls = 0;
1936 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1937 struct nes_root_vpbl new_root = { 0, NULL, NULL };
1941 /* Register the region with the adapter */
1942 cqp_request = nes_get_cqp_request(nesdev);
1943 if (cqp_request == NULL) {
1944 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1947 cqp_request->waiting = 1;
1948 cqp_wqe = &cqp_request->cqp_wqe;
1951 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1953 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1954 pbl_count_256 = (pg_cnt + 31) / 32;
1956 if (pbl_count_256 <= nesadapter->free_256pbl)
1958 else if (pbl_count_4k <= nesadapter->free_4kpbl)
1960 } else if (pg_cnt <= 2048) {
1961 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1962 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1964 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1967 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1971 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1976 pbl_count = pbl_count_256;
1977 nesadapter->free_256pbl -= pbl_count + use_two_level;
1978 } else if (use_4k_pbls) {
1979 pbl_count = pbl_count_4k;
1980 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1982 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1983 nes_debug(NES_DBG_MR, "Out of Pbls\n");
1984 nes_free_cqp_request(nesdev, cqp_request);
1988 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1991 if (use_256_pbls && use_two_level) {
1992 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
1993 if (new_root.pbl_pbase != 0)
1994 root_vpbl = &new_root;
1996 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1997 nesadapter->free_256pbl += pbl_count_256 + use_two_level;
2000 if (pbl_count_4k == 1)
2002 pbl_count = pbl_count_4k;
2004 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2005 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2008 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2010 if (use_4k_pbls == 0)
2015 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2016 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2017 if (acc & IB_ACCESS_LOCAL_WRITE)
2018 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2019 if (acc & IB_ACCESS_REMOTE_WRITE)
2020 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2021 if (acc & IB_ACCESS_REMOTE_READ)
2022 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2023 if (acc & IB_ACCESS_MW_BIND)
2024 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2026 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2027 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2028 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2029 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2031 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2032 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2033 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2034 cpu_to_le32(nespd->pd_id & 0x00007fff);
2035 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2037 if (pbl_count == 0) {
2038 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2040 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2041 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
2042 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
2045 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2049 atomic_set(&cqp_request->refcount, 2);
2050 nes_post_cqp_request(nesdev, cqp_request);
2053 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2055 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2056 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2057 stag, ret, cqp_request->major_code, cqp_request->minor_code);
2058 major_code = cqp_request->major_code;
2059 nes_put_cqp_request(nesdev, cqp_request);
2061 if ((!ret || major_code) && pbl_count != 0) {
2062 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2064 nesadapter->free_256pbl += pbl_count + use_two_level;
2065 else if (use_4k_pbls)
2066 nesadapter->free_4kpbl += pbl_count + use_two_level;
2067 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2069 if (new_root.pbl_pbase)
2070 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
2071 new_root.pbl_pbase);
2075 else if (major_code)
2078 *actual_pbl_cnt = pbl_count + use_two_level;
2079 *used_4k_pbls = use_4k_pbls;
2087 static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2088 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2092 struct nes_pd *nespd = to_nespd(ib_pd);
2093 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2094 struct nes_device *nesdev = nesvnic->nesdev;
2095 struct nes_adapter *nesadapter = nesdev->nesadapter;
2096 struct nes_mr *nesmr;
2098 struct nes_vpbl vpbl;
2099 struct nes_root_vpbl root_vpbl;
2104 u32 next_stag_index = 0;
2106 u32 root_pbl_index = 0;
2107 u32 cur_pbl_index = 0;
2115 vpbl.pbl_vbase = NULL;
2116 root_vpbl.pbl_vbase = NULL;
2117 root_vpbl.pbl_pbase = 0;
2119 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2120 stag_key = (u8)next_stag_index;
2124 next_stag_index >>= 8;
2125 next_stag_index %= nesadapter->max_mr;
2126 if (num_phys_buf > (1024*512)) {
2127 return ERR_PTR(-E2BIG);
2130 if ((buffer_list[0].addr ^ *iova_start) & ~PAGE_MASK)
2131 return ERR_PTR(-EINVAL);
2133 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2134 &stag_index, &next_stag_index, NES_RESOURCE_PHYS_MR);
2136 return ERR_PTR(err);
2139 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2141 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2142 return ERR_PTR(-ENOMEM);
2145 for (i = 0; i < num_phys_buf; i++) {
2147 if ((i & 0x01FF) == 0) {
2148 if (root_pbl_index == 1) {
2149 /* Allocate the root PBL */
2150 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2151 &root_vpbl.pbl_pbase);
2152 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2153 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2154 if (!root_vpbl.pbl_vbase) {
2155 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2157 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2159 return ERR_PTR(-ENOMEM);
2161 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2162 if (!root_vpbl.leaf_vpbl) {
2163 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2164 root_vpbl.pbl_pbase);
2165 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2167 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2169 return ERR_PTR(-ENOMEM);
2171 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2172 root_vpbl.pbl_vbase[0].pa_high =
2173 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2174 root_vpbl.leaf_vpbl[0] = vpbl;
2176 /* Allocate a 4K buffer for the PBL */
2177 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2179 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2180 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2181 if (!vpbl.pbl_vbase) {
2182 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2183 ibmr = ERR_PTR(-ENOMEM);
2187 /* Fill in the root table */
2188 if (1 <= root_pbl_index) {
2189 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2190 cpu_to_le32((u32)vpbl.pbl_pbase);
2191 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2192 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2193 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2199 mask = !buffer_list[i].size;
2201 mask |= buffer_list[i].addr;
2202 if (i != num_phys_buf - 1)
2203 mask |= buffer_list[i].addr + buffer_list[i].size;
2205 if (mask & ~PAGE_MASK) {
2206 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2207 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2208 ibmr = ERR_PTR(-EINVAL);
2213 region_length += buffer_list[i].size;
2214 if ((i != 0) && (single_page)) {
2215 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2218 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr & PAGE_MASK);
2219 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2220 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2223 stag = stag_index << 8;
2225 stag += (u32)stag_key;
2227 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2228 " length = 0x%016lX, index = 0x%08X\n",
2229 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2231 /* Make the leaf PBL the root if only one PBL */
2232 if (root_pbl_index == 1) {
2233 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2239 pbl_count = root_pbl_index;
2241 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2242 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2243 &nesmr->pbls_used, &nesmr->pbl_4k);
2246 nesmr->ibmr.rkey = stag;
2247 nesmr->ibmr.lkey = stag;
2248 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2249 ibmr = &nesmr->ibmr;
2252 ibmr = ERR_PTR(-ENOMEM);
2256 /* free the resources */
2257 if (root_pbl_index == 1) {
2258 /* single PBL case */
2259 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2261 for (i=0; i<root_pbl_index; i++) {
2262 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2263 root_vpbl.leaf_vpbl[i].pbl_pbase);
2265 kfree(root_vpbl.leaf_vpbl);
2266 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2267 root_vpbl.pbl_pbase);
2277 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2279 struct ib_phys_buf bl;
2282 nes_debug(NES_DBG_MR, "\n");
2284 bl.size = (u64)0xffffffffffULL;
2286 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2293 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2294 u64 virt, int acc, struct ib_udata *udata)
2299 dma_addr_t last_dma_addr = 0;
2300 dma_addr_t first_dma_addr = 0;
2301 struct nes_pd *nespd = to_nespd(pd);
2302 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2303 struct nes_device *nesdev = nesvnic->nesdev;
2304 struct nes_adapter *nesadapter = nesdev->nesadapter;
2305 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2306 struct ib_umem_chunk *chunk;
2307 struct nes_ucontext *nes_ucontext;
2308 struct nes_pbl *nespbl;
2309 struct nes_mr *nesmr;
2310 struct ib_umem *region;
2311 struct nes_mem_reg_req req;
2312 struct nes_vpbl vpbl;
2313 struct nes_root_vpbl root_vpbl;
2314 int nmap_index, page_index;
2316 int err, pbl_depth = 0;
2321 u32 next_stag_index;
2323 u32 root_pbl_index = 0;
2324 u32 cur_pbl_index = 0;
2330 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2331 if (IS_ERR(region)) {
2332 return (struct ib_mr *)region;
2335 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2336 " offset = %u, page size = %u.\n",
2337 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2338 region->offset, region->page_size);
2340 skip_pages = ((u32)region->offset) >> 12;
2342 if (ib_copy_from_udata(&req, udata, sizeof(req))) {
2343 ib_umem_release(region);
2344 return ERR_PTR(-EFAULT);
2346 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2348 switch (req.reg_type) {
2349 case IWNES_MEMREG_TYPE_MEM:
2352 vpbl.pbl_vbase = NULL;
2353 root_vpbl.pbl_vbase = NULL;
2354 root_vpbl.pbl_pbase = 0;
2356 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2357 stag_key = (u8)next_stag_index;
2359 driver_key = next_stag_index & 0x70000000;
2361 next_stag_index >>= 8;
2362 next_stag_index %= nesadapter->max_mr;
2364 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2365 nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_USER_MR);
2367 ib_umem_release(region);
2368 return ERR_PTR(err);
2371 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2373 ib_umem_release(region);
2374 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2375 return ERR_PTR(-ENOMEM);
2377 nesmr->region = region;
2379 list_for_each_entry(chunk, ®ion->chunk_list, list) {
2380 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2381 chunk->nents, chunk->nmap);
2382 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2383 if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2384 ib_umem_release(region);
2385 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2386 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2387 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2388 ibmr = ERR_PTR(-EINVAL);
2390 goto reg_user_mr_err;
2393 if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2394 ib_umem_release(region);
2395 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2397 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2398 ibmr = ERR_PTR(-EINVAL);
2400 goto reg_user_mr_err;
2403 region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2404 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2405 region_length -= skip_pages << 12;
2406 for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2408 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2410 if ((page_count&0x01FF) == 0) {
2411 if (page_count >= 1024 * 512) {
2412 ib_umem_release(region);
2413 nes_free_resource(nesadapter,
2414 nesadapter->allocated_mrs, stag_index);
2416 ibmr = ERR_PTR(-E2BIG);
2417 goto reg_user_mr_err;
2419 if (root_pbl_index == 1) {
2420 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2421 8192, &root_vpbl.pbl_pbase);
2422 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2423 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2424 if (!root_vpbl.pbl_vbase) {
2425 ib_umem_release(region);
2426 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2428 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2431 ibmr = ERR_PTR(-ENOMEM);
2432 goto reg_user_mr_err;
2434 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2436 if (!root_vpbl.leaf_vpbl) {
2437 ib_umem_release(region);
2438 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2439 root_vpbl.pbl_pbase);
2440 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2442 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2445 ibmr = ERR_PTR(-ENOMEM);
2446 goto reg_user_mr_err;
2448 root_vpbl.pbl_vbase[0].pa_low =
2449 cpu_to_le32((u32)vpbl.pbl_pbase);
2450 root_vpbl.pbl_vbase[0].pa_high =
2451 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2452 root_vpbl.leaf_vpbl[0] = vpbl;
2454 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2456 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2457 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2458 if (!vpbl.pbl_vbase) {
2459 ib_umem_release(region);
2460 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2461 ibmr = ERR_PTR(-ENOMEM);
2463 goto reg_user_mr_err;
2465 if (1 <= root_pbl_index) {
2466 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2467 cpu_to_le32((u32)vpbl.pbl_pbase);
2468 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2469 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2470 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2476 if (page_count != 0) {
2477 if ((last_dma_addr+4096) !=
2478 (sg_dma_address(&chunk->page_list[nmap_index])+
2481 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2484 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2486 last_dma_addr = first_dma_addr;
2490 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2491 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2492 (page_index*4096)));
2493 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2494 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2495 (page_index*4096))) >> 32)));
2502 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2503 " stag_key=0x%08x\n",
2504 stag_index, driver_key, stag_key);
2505 stag = stag_index << 8;
2507 stag += (u32)stag_key;
2510 /* Make the leaf PBL the root if only one PBL */
2511 if (root_pbl_index == 1) {
2512 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2518 pbl_count = root_pbl_index;
2521 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2522 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2523 stag, (unsigned int)iova_start,
2524 (unsigned int)region_length, stag_index,
2525 (unsigned long long)region->length, pbl_count);
2526 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2527 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2528 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2530 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2533 nesmr->ibmr.rkey = stag;
2534 nesmr->ibmr.lkey = stag;
2535 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2536 ibmr = &nesmr->ibmr;
2538 ib_umem_release(region);
2540 ibmr = ERR_PTR(-ENOMEM);
2544 /* free the resources */
2545 if (root_pbl_index == 1) {
2546 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2549 for (page_index=0; page_index<root_pbl_index; page_index++) {
2550 pci_free_consistent(nesdev->pcidev, 4096,
2551 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2552 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2554 kfree(root_vpbl.leaf_vpbl);
2555 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2556 root_vpbl.pbl_pbase);
2559 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2562 case IWNES_MEMREG_TYPE_QP:
2563 case IWNES_MEMREG_TYPE_CQ:
2564 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2566 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2567 ib_umem_release(region);
2568 return ERR_PTR(-ENOMEM);
2570 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2572 ib_umem_release(region);
2574 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2575 return ERR_PTR(-ENOMEM);
2577 nesmr->region = region;
2578 nes_ucontext = to_nesucontext(pd->uobject->context);
2579 pbl_depth = region->length >> 12;
2580 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2581 nespbl->pbl_size = pbl_depth*sizeof(u64);
2582 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2583 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2585 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2588 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2589 nespbl->pbl_size, pbl_depth);
2590 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2591 &nespbl->pbl_pbase);
2593 ib_umem_release(region);
2596 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2597 return ERR_PTR(-ENOMEM);
2600 nespbl->pbl_vbase = (u64 *)pbl;
2601 nespbl->user_base = start;
2602 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2603 " pbl_vbase=%p user_base=0x%lx\n",
2604 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2605 (void *) nespbl->pbl_vbase, nespbl->user_base);
2607 list_for_each_entry(chunk, ®ion->chunk_list, list) {
2608 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2609 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2610 chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2611 nespbl->page = sg_page(&chunk->page_list[0]);
2612 for (page_index=0; page_index<chunk_pages; page_index++) {
2613 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2614 (sg_dma_address(&chunk->page_list[nmap_index])+
2615 (page_index*4096)));
2616 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2617 (sg_dma_address(&chunk->page_list[nmap_index])+
2618 (page_index*4096)))>>32);
2619 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2620 (unsigned long long)*pbl,
2621 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2626 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2627 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2629 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2631 nesmr->ibmr.rkey = -1;
2632 nesmr->ibmr.lkey = -1;
2633 nesmr->mode = req.reg_type;
2634 return &nesmr->ibmr;
2637 ib_umem_release(region);
2638 return ERR_PTR(-ENOSYS);
2645 static int nes_dereg_mr(struct ib_mr *ib_mr)
2647 struct nes_mr *nesmr = to_nesmr(ib_mr);
2648 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2649 struct nes_device *nesdev = nesvnic->nesdev;
2650 struct nes_adapter *nesadapter = nesdev->nesadapter;
2651 struct nes_hw_cqp_wqe *cqp_wqe;
2652 struct nes_cqp_request *cqp_request;
2653 unsigned long flags;
2658 if (nesmr->region) {
2659 ib_umem_release(nesmr->region);
2661 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2666 /* Deallocate the region with the adapter */
2668 cqp_request = nes_get_cqp_request(nesdev);
2669 if (cqp_request == NULL) {
2670 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2673 cqp_request->waiting = 1;
2674 cqp_wqe = &cqp_request->cqp_wqe;
2676 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2677 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2678 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2679 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2680 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2682 atomic_set(&cqp_request->refcount, 2);
2683 nes_post_cqp_request(nesdev, cqp_request);
2686 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2687 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2689 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2690 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2691 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2693 major_code = cqp_request->major_code;
2694 minor_code = cqp_request->minor_code;
2696 nes_put_cqp_request(nesdev, cqp_request);
2699 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2700 " ib_mr=%p, rkey = 0x%08X\n",
2701 ib_mr, ib_mr->rkey);
2703 } else if (major_code) {
2704 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2705 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2706 major_code, minor_code, ib_mr, ib_mr->rkey);
2710 if (nesmr->pbls_used != 0) {
2711 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2712 if (nesmr->pbl_4k) {
2713 nesadapter->free_4kpbl += nesmr->pbls_used;
2714 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2715 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2716 "exceeded the max(%u)\n",
2717 nesadapter->free_4kpbl,
2718 nesadapter->max_4kpbl);
2720 nesadapter->free_256pbl += nesmr->pbls_used;
2721 if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2722 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2723 "exceeded the max(%u)\n",
2724 nesadapter->free_256pbl,
2725 nesadapter->max_256pbl);
2727 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2729 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2730 (ib_mr->rkey & 0x0fffff00) >> 8);
2741 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2744 struct nes_ib_device *nesibdev =
2745 container_of(dev, struct nes_ib_device, ibdev.dev);
2746 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2748 nes_debug(NES_DBG_INIT, "\n");
2749 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2756 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2759 struct nes_ib_device *nesibdev =
2760 container_of(dev, struct nes_ib_device, ibdev.dev);
2761 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2763 nes_debug(NES_DBG_INIT, "\n");
2764 return sprintf(buf, "%u.%u\n",
2765 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2766 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
2773 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2776 nes_debug(NES_DBG_INIT, "\n");
2777 return sprintf(buf, "NES020\n");
2784 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2787 nes_debug(NES_DBG_INIT, "\n");
2788 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2792 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2793 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2794 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2795 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2797 static struct device_attribute *nes_dev_attributes[] = {
2808 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2809 int attr_mask, struct ib_qp_init_attr *init_attr)
2811 struct nes_qp *nesqp = to_nesqp(ibqp);
2813 nes_debug(NES_DBG_QP, "\n");
2815 attr->qp_access_flags = 0;
2816 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2817 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2818 attr->cap.max_recv_sge = 1;
2819 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)
2820 attr->cap.max_inline_data = 0;
2822 attr->cap.max_inline_data = 64;
2824 init_attr->event_handler = nesqp->ibqp.event_handler;
2825 init_attr->qp_context = nesqp->ibqp.qp_context;
2826 init_attr->send_cq = nesqp->ibqp.send_cq;
2827 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2828 init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
2829 init_attr->cap = attr->cap;
2838 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2839 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
2841 struct nes_hw_cqp_wqe *cqp_wqe;
2842 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2843 /* struct iw_cm_event cm_event; */
2844 struct nes_cqp_request *cqp_request;
2848 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2849 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2851 cqp_request = nes_get_cqp_request(nesdev);
2852 if (cqp_request == NULL) {
2853 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2856 if (wait_completion) {
2857 cqp_request->waiting = 1;
2859 cqp_request->waiting = 0;
2861 cqp_wqe = &cqp_request->cqp_wqe;
2863 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2864 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2865 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2866 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2867 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2868 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2869 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2871 /* If sending a terminate message, fill in the length (in words) */
2872 if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2873 !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2874 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2875 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2878 atomic_set(&cqp_request->refcount, 2);
2879 nes_post_cqp_request(nesdev, cqp_request);
2882 if (wait_completion) {
2883 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2884 nesqp->hwqp.qp_id); */
2885 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2887 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2888 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2889 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2890 major_code = cqp_request->major_code;
2892 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2893 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2894 nesqp->hwqp.qp_id, cqp_request->major_code,
2895 cqp_request->minor_code, next_iwarp_state);
2898 nes_put_cqp_request(nesdev, cqp_request);
2902 else if (major_code)
2915 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2916 int attr_mask, struct ib_udata *udata)
2918 struct nes_qp *nesqp = to_nesqp(ibqp);
2919 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2920 struct nes_device *nesdev = nesvnic->nesdev;
2923 u32 next_iwarp_state = 0;
2925 unsigned long qplockflags;
2927 u16 original_last_aeq;
2928 u8 issue_modify_qp = 0;
2931 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2932 " iwarp_state=0x%X, refcount=%d\n",
2933 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2934 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2936 spin_lock_irqsave(&nesqp->lock, qplockflags);
2938 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2939 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2940 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2941 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2943 if (attr_mask & IB_QP_STATE) {
2944 switch (attr->qp_state) {
2946 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2948 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2949 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2952 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2953 issue_modify_qp = 1;
2956 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2958 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2959 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2962 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2963 issue_modify_qp = 1;
2966 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2968 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2969 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2972 if (nesqp->cm_id == NULL) {
2973 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2974 nesqp->hwqp.qp_id );
2975 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2978 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2979 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2980 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
2981 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
2982 issue_modify_qp = 1;
2983 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
2984 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
2985 nesqp->hte_added = 1;
2988 issue_modify_qp = 1;
2989 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
2990 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
2991 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2992 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2995 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2996 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2997 " ignored due to current iWARP state\n",
2999 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3002 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3003 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3004 " already done based on hw state.\n",
3006 issue_modify_qp = 0;
3008 switch (nesqp->hw_iwarp_state) {
3009 case NES_AEQE_IWARP_STATE_CLOSING:
3010 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3012 case NES_AEQE_IWARP_STATE_TERMINATE:
3013 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3015 case NES_AEQE_IWARP_STATE_ERROR:
3016 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3019 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3020 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3026 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3028 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3029 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3032 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3033 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3034 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3035 issue_modify_qp = 1;
3039 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3040 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3043 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3045 if (nesqp->term_flags)
3046 del_timer(&nesqp->terminate_timer);
3048 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3049 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3050 if (nesqp->hte_added) {
3051 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3052 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3053 nesqp->hte_added = 0;
3055 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3056 (nesdev->iw_status) &&
3057 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3058 next_iwarp_state |= NES_CQP_QP_RESET;
3060 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3061 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3064 issue_modify_qp = 1;
3065 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3068 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3073 nesqp->ibqp_state = attr->qp_state;
3074 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3075 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3076 nesqp->iwarp_state);
3079 if (attr_mask & IB_QP_ACCESS_FLAGS) {
3080 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3081 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3082 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3083 issue_modify_qp = 1;
3085 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3086 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3087 issue_modify_qp = 1;
3089 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3090 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3091 issue_modify_qp = 1;
3093 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3094 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3095 issue_modify_qp = 1;
3098 if (nesqp->user_mode) {
3099 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3100 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3101 issue_modify_qp = 1;
3105 original_last_aeq = nesqp->last_aeq;
3106 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3108 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3113 if (issue_modify_qp) {
3114 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3115 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
3117 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3118 " failed for QP%u.\n",
3119 next_iwarp_state, nesqp->hwqp.qp_id);
3123 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3124 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3125 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3126 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3127 original_last_aeq, nesqp->last_aeq);
3129 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3132 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3133 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3134 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3135 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3136 original_last_aeq, nesqp->last_aeq);
3137 /* this one is for the cm_disconnect thread */
3138 spin_lock_irqsave(&nesqp->lock, qplockflags);
3139 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3140 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3141 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3142 nes_cm_disconn(nesqp);
3144 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3145 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3148 spin_lock_irqsave(&nesqp->lock, qplockflags);
3150 /* These two are for the timer thread */
3151 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3152 nesqp->cm_id->add_ref(nesqp->cm_id);
3153 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3154 " need ae to finish up, original_last_aeq = 0x%04X."
3155 " last_aeq = 0x%04X, scheduling timer.\n",
3156 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3157 original_last_aeq, nesqp->last_aeq);
3158 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3160 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3162 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3163 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3164 " need ae to finish up, original_last_aeq = 0x%04X."
3165 " last_aeq = 0x%04X.\n",
3166 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3167 original_last_aeq, nesqp->last_aeq);
3171 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3172 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3173 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3174 original_last_aeq, nesqp->last_aeq);
3177 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3178 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3179 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3180 original_last_aeq, nesqp->last_aeq);
3185 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3186 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3193 * nes_muticast_attach
3195 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3197 nes_debug(NES_DBG_INIT, "\n");
3203 * nes_multicast_detach
3205 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3207 nes_debug(NES_DBG_INIT, "\n");
3215 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3216 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3217 struct ib_mad *in_mad, struct ib_mad *out_mad)
3219 nes_debug(NES_DBG_INIT, "\n");
3224 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3227 int total_payload_length = 0;
3228 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3229 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3230 ib_wr->sg_list[sge_index].addr);
3231 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3232 ib_wr->sg_list[sge_index].length);
3234 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3235 (ib_wr->sg_list[sge_index].lkey));
3237 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3239 total_payload_length += ib_wr->sg_list[sge_index].length;
3241 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3242 total_payload_length);
3243 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3244 total_payload_length);
3250 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3251 struct ib_send_wr **bad_wr)
3254 unsigned long flags = 0;
3255 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3256 struct nes_device *nesdev = nesvnic->nesdev;
3257 struct nes_qp *nesqp = to_nesqp(ibqp);
3258 struct nes_hw_qp_wqe *wqe;
3260 u32 qsize = nesqp->hwqp.sq_size;
3266 if (nesqp->ibqp_state > IB_QPS_RTS) {
3271 spin_lock_irqsave(&nesqp->lock, flags);
3273 head = nesqp->hwqp.sq_head;
3276 /* Check for QP error */
3277 if (nesqp->term_flags) {
3282 /* Check for SQ overflow */
3283 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3288 wqe = &nesqp->hwqp.sq_vbase[head];
3289 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3290 nesqp->hwqp.qp_id, wqe, head); */
3291 nes_fill_init_qp_wqe(wqe, nesqp, head);
3292 u64temp = (u64)(ib_wr->wr_id);
3293 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3295 switch (ib_wr->opcode) {
3297 case IB_WR_SEND_WITH_INV:
3298 if (IB_WR_SEND == ib_wr->opcode) {
3299 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3300 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3302 wqe_misc = NES_IWARP_SQ_OP_SEND;
3304 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3305 wqe_misc = NES_IWARP_SQ_OP_SENDSEINV;
3307 wqe_misc = NES_IWARP_SQ_OP_SENDINV;
3309 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3310 ib_wr->ex.invalidate_rkey);
3313 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3318 if (ib_wr->send_flags & IB_SEND_FENCE)
3319 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3321 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3322 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3323 (ib_wr->sg_list[0].length <= 64)) {
3324 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3325 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3326 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3327 ib_wr->sg_list[0].length);
3328 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3330 fill_wqe_sg_send(wqe, ib_wr, 1);
3334 case IB_WR_RDMA_WRITE:
3335 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3336 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3337 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3338 ib_wr->num_sge, nesdev->nesadapter->max_sge);
3343 if (ib_wr->send_flags & IB_SEND_FENCE)
3344 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3346 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3347 ib_wr->wr.rdma.rkey);
3348 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3349 ib_wr->wr.rdma.remote_addr);
3351 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3352 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3353 (ib_wr->sg_list[0].length <= 64)) {
3354 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3355 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3356 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3357 ib_wr->sg_list[0].length);
3358 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3360 fill_wqe_sg_send(wqe, ib_wr, 1);
3363 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3364 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3366 case IB_WR_RDMA_READ:
3367 case IB_WR_RDMA_READ_WITH_INV:
3368 /* iWARP only supports 1 sge for RDMA reads */
3369 if (ib_wr->num_sge > 1) {
3370 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3375 if (ib_wr->opcode == IB_WR_RDMA_READ) {
3376 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3378 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV;
3379 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3380 ib_wr->ex.invalidate_rkey);
3383 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3384 ib_wr->wr.rdma.remote_addr);
3385 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3386 ib_wr->wr.rdma.rkey);
3387 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3388 ib_wr->sg_list->length);
3389 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3390 ib_wr->sg_list->addr);
3391 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3392 ib_wr->sg_list->lkey);
3394 case IB_WR_LOCAL_INV:
3395 wqe_misc = NES_IWARP_SQ_OP_LOCINV;
3396 set_wqe_32bit_value(wqe->wqe_words,
3397 NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
3398 ib_wr->ex.invalidate_rkey);
3400 case IB_WR_FAST_REG_MR:
3403 int flags = ib_wr->wr.fast_reg.access_flags;
3404 struct nes_ib_fast_reg_page_list *pnesfrpl =
3405 container_of(ib_wr->wr.fast_reg.page_list,
3406 struct nes_ib_fast_reg_page_list,
3408 u64 *src_page_list = pnesfrpl->ibfrpl.page_list;
3409 u64 *dst_page_list = pnesfrpl->nes_wqe_pbl.kva;
3411 if (ib_wr->wr.fast_reg.page_list_len >
3412 (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3413 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3417 wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3418 set_wqe_64bit_value(wqe->wqe_words,
3419 NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3420 ib_wr->wr.fast_reg.iova_start);
3421 set_wqe_32bit_value(wqe->wqe_words,
3422 NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3423 ib_wr->wr.fast_reg.length);
3424 set_wqe_32bit_value(wqe->wqe_words,
3425 NES_IWARP_SQ_FMR_WQE_LENGTH_HIGH_IDX, 0);
3426 set_wqe_32bit_value(wqe->wqe_words,
3427 NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3428 ib_wr->wr.fast_reg.rkey);
3429 /* Set page size: */
3430 if (ib_wr->wr.fast_reg.page_shift == 12) {
3431 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3432 } else if (ib_wr->wr.fast_reg.page_shift == 21) {
3433 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3435 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3436 " ib_wr=%u, max=1\n", ib_wr->num_sge);
3440 /* Set access_flags */
3441 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3442 if (flags & IB_ACCESS_LOCAL_WRITE)
3443 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3445 if (flags & IB_ACCESS_REMOTE_WRITE)
3446 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3448 if (flags & IB_ACCESS_REMOTE_READ)
3449 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3451 if (flags & IB_ACCESS_MW_BIND)
3452 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3454 /* Fill in PBL info: */
3455 if (ib_wr->wr.fast_reg.page_list_len >
3456 pnesfrpl->ibfrpl.max_page_list_len) {
3457 nes_debug(NES_DBG_IW_TX, "Invalid page list length,"
3458 " ib_wr=%p, value=%u, max=%u\n",
3459 ib_wr, ib_wr->wr.fast_reg.page_list_len,
3460 pnesfrpl->ibfrpl.max_page_list_len);
3465 set_wqe_64bit_value(wqe->wqe_words,
3466 NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3467 pnesfrpl->nes_wqe_pbl.paddr);
3469 set_wqe_32bit_value(wqe->wqe_words,
3470 NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3471 ib_wr->wr.fast_reg.page_list_len * 8);
3473 for (i = 0; i < ib_wr->wr.fast_reg.page_list_len; i++)
3474 dst_page_list[i] = cpu_to_le64(src_page_list[i]);
3476 nes_debug(NES_DBG_IW_TX, "SQ_FMR: iova_start: %llx, "
3477 "length: %d, rkey: %0x, pgl_paddr: %llx, "
3478 "page_list_len: %u, wqe_misc: %x\n",
3479 (unsigned long long) ib_wr->wr.fast_reg.iova_start,
3480 ib_wr->wr.fast_reg.length,
3481 ib_wr->wr.fast_reg.rkey,
3482 (unsigned long long) pnesfrpl->nes_wqe_pbl.paddr,
3483 ib_wr->wr.fast_reg.page_list_len,
3496 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all)
3497 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3499 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3501 ib_wr = ib_wr->next;
3509 nesqp->hwqp.sq_head = head;
3512 counter = min(wqe_count, ((u32)255));
3513 wqe_count -= counter;
3514 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3515 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3518 spin_unlock_irqrestore(&nesqp->lock, flags);
3530 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3531 struct ib_recv_wr **bad_wr)
3534 unsigned long flags = 0;
3535 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3536 struct nes_device *nesdev = nesvnic->nesdev;
3537 struct nes_qp *nesqp = to_nesqp(ibqp);
3538 struct nes_hw_qp_wqe *wqe;
3541 u32 qsize = nesqp->hwqp.rq_size;
3545 u32 total_payload_length;
3547 if (nesqp->ibqp_state > IB_QPS_RTS) {
3552 spin_lock_irqsave(&nesqp->lock, flags);
3554 head = nesqp->hwqp.rq_head;
3557 /* Check for QP error */
3558 if (nesqp->term_flags) {
3563 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3567 /* Check for RQ overflow */
3568 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3573 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3574 wqe = &nesqp->hwqp.rq_vbase[head];
3576 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3577 nesqp->hwqp.qp_id, wqe, head); */
3578 nes_fill_init_qp_wqe(wqe, nesqp, head);
3579 u64temp = (u64)(ib_wr->wr_id);
3580 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3582 total_payload_length = 0;
3583 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3584 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3585 ib_wr->sg_list[sge_index].addr);
3586 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3587 ib_wr->sg_list[sge_index].length);
3588 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3589 ib_wr->sg_list[sge_index].lkey);
3591 total_payload_length += ib_wr->sg_list[sge_index].length;
3593 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3594 total_payload_length);
3596 ib_wr = ib_wr->next;
3603 nesqp->hwqp.rq_head = head;
3606 counter = min(wqe_count, ((u32)255));
3607 wqe_count -= counter;
3608 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3611 spin_unlock_irqrestore(&nesqp->lock, flags);
3623 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3627 unsigned long flags = 0;
3628 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3629 struct nes_device *nesdev = nesvnic->nesdev;
3630 struct nes_cq *nescq = to_nescq(ibcq);
3631 struct nes_qp *nesqp;
3632 struct nes_hw_cqe cqe;
3639 u32 move_cq_head = 1;
3642 nes_debug(NES_DBG_CQ, "\n");
3644 spin_lock_irqsave(&nescq->lock, flags);
3646 head = nescq->hw_cq.cq_head;
3647 cq_size = nescq->hw_cq.cq_size;
3649 while (cqe_count < num_entries) {
3650 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3651 NES_CQE_VALID) == 0)
3655 * Make sure we read CQ entry contents *after*
3656 * we've checked the valid bit.
3660 cqe = nescq->hw_cq.cq_vbase[head];
3661 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3662 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3663 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3664 /* parse CQE, get completion context from WQE (either rq or sq) */
3665 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3669 nesqp = (struct nes_qp *)(unsigned long)u64temp;
3670 memset(entry, 0, sizeof *entry);
3671 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3672 entry->status = IB_WC_SUCCESS;
3674 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3675 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3676 entry->status = err_code & 0x0000ffff;
3678 /* The rest of the cqe's will be marked as flushed */
3679 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3680 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3681 NES_IWARP_CQE_MINOR_FLUSH);
3683 entry->status = IB_WC_WR_FLUSH_ERR;
3686 entry->qp = &nesqp->ibqp;
3687 entry->src_qp = nesqp->hwqp.qp_id;
3689 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3690 if (nesqp->skip_lsmm) {
3691 nesqp->skip_lsmm = 0;
3692 nesqp->hwqp.sq_tail++;
3695 /* Working on a SQ Completion*/
3696 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3697 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3698 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3699 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3700 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3701 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3703 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3704 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3705 case NES_IWARP_SQ_OP_RDMAW:
3706 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3707 entry->opcode = IB_WC_RDMA_WRITE;
3709 case NES_IWARP_SQ_OP_RDMAR:
3710 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3711 entry->opcode = IB_WC_RDMA_READ;
3712 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3713 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3715 case NES_IWARP_SQ_OP_SENDINV:
3716 case NES_IWARP_SQ_OP_SENDSEINV:
3717 case NES_IWARP_SQ_OP_SEND:
3718 case NES_IWARP_SQ_OP_SENDSE:
3719 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3720 entry->opcode = IB_WC_SEND;
3722 case NES_IWARP_SQ_OP_LOCINV:
3723 entry->opcode = IB_WC_LOCAL_INV;
3725 case NES_IWARP_SQ_OP_FAST_REG:
3726 entry->opcode = IB_WC_FAST_REG_MR;
3730 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3731 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3733 wq_tail = nesqp->hwqp.sq_tail;
3736 /* Working on a RQ Completion*/
3737 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3738 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3739 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3740 entry->opcode = IB_WC_RECV;
3742 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3743 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3745 wq_tail = nesqp->hwqp.rq_tail;
3749 entry->wr_id = wrid;
3755 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3756 if (++head >= cq_size)
3758 nescq->polled_completions++;
3760 if ((nescq->polled_completions > (cq_size / 2)) ||
3761 (nescq->polled_completions == 255)) {
3762 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3763 " are pending %u of %u.\n",
3764 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3765 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3766 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3767 nescq->polled_completions = 0;
3770 /* Update the wqe index and set status to flush */
3771 wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3772 wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3773 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3774 cpu_to_le32(wqe_index);
3775 move_cq_head = 1; /* ready for next pass */
3779 if (nescq->polled_completions) {
3780 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3781 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3782 nescq->polled_completions = 0;
3785 nescq->hw_cq.cq_head = head;
3786 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3787 cqe_count, nescq->hw_cq.cq_number);
3789 spin_unlock_irqrestore(&nescq->lock, flags);
3798 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3800 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3801 struct nes_device *nesdev = nesvnic->nesdev;
3802 struct nes_cq *nescq = to_nescq(ibcq);
3805 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3806 nescq->hw_cq.cq_number);
3808 cq_arm = nescq->hw_cq.cq_number;
3809 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3810 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3811 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3812 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3816 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3817 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3824 * nes_init_ofa_device
3826 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3828 struct nes_ib_device *nesibdev;
3829 struct nes_vnic *nesvnic = netdev_priv(netdev);
3830 struct nes_device *nesdev = nesvnic->nesdev;
3832 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3833 if (nesibdev == NULL) {
3836 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3837 nesibdev->ibdev.owner = THIS_MODULE;
3839 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3840 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3841 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3843 nesibdev->ibdev.uverbs_cmd_mask =
3844 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3845 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3846 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3847 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3848 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3849 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3850 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3851 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3852 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3853 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3854 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3855 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3856 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3857 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3858 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3859 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3860 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3861 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3862 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3863 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3864 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3865 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3867 nesibdev->ibdev.phys_port_cnt = 1;
3868 nesibdev->ibdev.num_comp_vectors = 1;
3869 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3870 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3871 nesibdev->ibdev.query_device = nes_query_device;
3872 nesibdev->ibdev.query_port = nes_query_port;
3873 nesibdev->ibdev.query_pkey = nes_query_pkey;
3874 nesibdev->ibdev.query_gid = nes_query_gid;
3875 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3876 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3877 nesibdev->ibdev.mmap = nes_mmap;
3878 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3879 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3880 nesibdev->ibdev.create_ah = nes_create_ah;
3881 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3882 nesibdev->ibdev.create_qp = nes_create_qp;
3883 nesibdev->ibdev.modify_qp = nes_modify_qp;
3884 nesibdev->ibdev.query_qp = nes_query_qp;
3885 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3886 nesibdev->ibdev.create_cq = nes_create_cq;
3887 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3888 nesibdev->ibdev.poll_cq = nes_poll_cq;
3889 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3890 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3891 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3892 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3893 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3894 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3895 nesibdev->ibdev.bind_mw = nes_bind_mw;
3897 nesibdev->ibdev.alloc_fast_reg_mr = nes_alloc_fast_reg_mr;
3898 nesibdev->ibdev.alloc_fast_reg_page_list = nes_alloc_fast_reg_page_list;
3899 nesibdev->ibdev.free_fast_reg_page_list = nes_free_fast_reg_page_list;
3901 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3902 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3903 nesibdev->ibdev.process_mad = nes_process_mad;
3905 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3906 nesibdev->ibdev.post_send = nes_post_send;
3907 nesibdev->ibdev.post_recv = nes_post_recv;
3909 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3910 if (nesibdev->ibdev.iwcm == NULL) {
3911 ib_dealloc_device(&nesibdev->ibdev);
3914 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3915 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3916 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3917 nesibdev->ibdev.iwcm->connect = nes_connect;
3918 nesibdev->ibdev.iwcm->accept = nes_accept;
3919 nesibdev->ibdev.iwcm->reject = nes_reject;
3920 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3921 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3928 * nes_handle_delayed_event
3930 static void nes_handle_delayed_event(unsigned long data)
3932 struct nes_vnic *nesvnic = (void *) data;
3934 if (nesvnic->delayed_event != nesvnic->last_dispatched_event) {
3935 struct ib_event event;
3937 event.device = &nesvnic->nesibdev->ibdev;
3940 event.event = nesvnic->delayed_event;
3941 event.element.port_num = nesvnic->logical_port + 1;
3942 ib_dispatch_event(&event);
3946 nesvnic->event_timer.function = NULL;
3950 void nes_port_ibevent(struct nes_vnic *nesvnic)
3952 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
3953 struct nes_device *nesdev = nesvnic->nesdev;
3954 struct ib_event event;
3955 event.device = &nesibdev->ibdev;
3956 event.element.port_num = nesvnic->logical_port + 1;
3957 event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3959 if (!nesvnic->event_timer.function) {
3960 ib_dispatch_event(&event);
3961 nesvnic->last_dispatched_event = event.event;
3962 nesvnic->event_timer.function = nes_handle_delayed_event;
3963 nesvnic->event_timer.data = (unsigned long) nesvnic;
3964 nesvnic->event_timer.expires = jiffies + NES_EVENT_DELAY;
3965 add_timer(&nesvnic->event_timer);
3967 mod_timer(&nesvnic->event_timer, jiffies + NES_EVENT_DELAY);
3969 nesvnic->delayed_event = event.event;
3974 * nes_destroy_ofa_device
3976 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3978 if (nesibdev == NULL)
3981 nes_unregister_ofa_device(nesibdev);
3983 kfree(nesibdev->ibdev.iwcm);
3984 ib_dealloc_device(&nesibdev->ibdev);
3989 * nes_register_ofa_device
3991 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3993 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3994 struct nes_device *nesdev = nesvnic->nesdev;
3995 struct nes_adapter *nesadapter = nesdev->nesadapter;
3998 ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL);
4003 /* Get the resources allocated to this device */
4004 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
4005 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
4006 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
4007 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
4009 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4010 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
4014 device_remove_file(&nesibdev->ibdev.dev,
4015 nes_dev_attributes[i]);
4017 ib_unregister_device(&nesibdev->ibdev);
4022 nesvnic->of_device_registered = 1;
4029 * nes_unregister_ofa_device
4031 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
4033 struct nes_vnic *nesvnic = nesibdev->nesvnic;
4036 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4037 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
4040 if (nesvnic->of_device_registered) {
4041 ib_unregister_device(&nesibdev->ibdev);
4044 nesvnic->of_device_registered = 0;