2 * Copyright (c) 2013-2015, Mellanox Technologies. 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
36 #include <linux/kernel.h>
37 #include <linux/completion.h>
38 #include <linux/pci.h>
39 #include <linux/spinlock_types.h>
40 #include <linux/semaphore.h>
41 #include <linux/slab.h>
42 #include <linux/vmalloc.h>
43 #include <linux/radix-tree.h>
45 #include <linux/mlx5/device.h>
46 #include <linux/mlx5/doorbell.h>
49 MLX5_BOARD_ID_LEN = 64,
50 MLX5_MAX_NAME_LEN = 16,
54 /* one minute for the sake of bringup. Generally, commands must always
55 * complete and we may need to increase this timeout value
57 MLX5_CMD_TIMEOUT_MSEC = 7200 * 1000,
58 MLX5_CMD_WQ_MAX_NAME = 32,
64 CMD_STATUS_SUCCESS = 0,
70 MLX5_SQP_IEEE_1588 = 2,
72 MLX5_SQP_SYNC_UMR = 4,
80 MLX5_EQ_VEC_PAGES = 0,
82 MLX5_EQ_VEC_ASYNC = 2,
83 MLX5_EQ_VEC_COMP_BASE,
87 MLX5_MAX_IRQ_NAME = 32
91 MLX5_ATOMIC_MODE_IB_COMP = 1 << 16,
92 MLX5_ATOMIC_MODE_CX = 2 << 16,
93 MLX5_ATOMIC_MODE_8B = 3 << 16,
94 MLX5_ATOMIC_MODE_16B = 4 << 16,
95 MLX5_ATOMIC_MODE_32B = 5 << 16,
96 MLX5_ATOMIC_MODE_64B = 6 << 16,
97 MLX5_ATOMIC_MODE_128B = 7 << 16,
98 MLX5_ATOMIC_MODE_256B = 8 << 16,
102 MLX5_REG_PCAP = 0x5001,
103 MLX5_REG_PMTU = 0x5003,
104 MLX5_REG_PTYS = 0x5004,
105 MLX5_REG_PAOS = 0x5006,
106 MLX5_REG_PMAOS = 0x5012,
107 MLX5_REG_PUDE = 0x5009,
108 MLX5_REG_PMPE = 0x5010,
109 MLX5_REG_PELC = 0x500e,
110 MLX5_REG_PMLP = 0, /* TBD */
111 MLX5_REG_NODE_DESC = 0x6001,
112 MLX5_REG_HOST_ENDIANNESS = 0x7004,
115 enum mlx5_page_fault_resume_flags {
116 MLX5_PAGE_FAULT_RESUME_REQUESTOR = 1 << 0,
117 MLX5_PAGE_FAULT_RESUME_WRITE = 1 << 1,
118 MLX5_PAGE_FAULT_RESUME_RDMA = 1 << 2,
119 MLX5_PAGE_FAULT_RESUME_ERROR = 1 << 7,
128 struct mlx5_field_desc {
133 struct mlx5_rsc_debug {
134 struct mlx5_core_dev *dev;
136 enum dbg_rsc_type type;
138 struct mlx5_field_desc fields[0];
141 enum mlx5_dev_event {
142 MLX5_DEV_EVENT_SYS_ERROR,
143 MLX5_DEV_EVENT_PORT_UP,
144 MLX5_DEV_EVENT_PORT_DOWN,
145 MLX5_DEV_EVENT_PORT_INITIALIZED,
146 MLX5_DEV_EVENT_LID_CHANGE,
147 MLX5_DEV_EVENT_PKEY_CHANGE,
148 MLX5_DEV_EVENT_GUID_CHANGE,
149 MLX5_DEV_EVENT_CLIENT_REREG,
152 struct mlx5_uuar_info {
153 struct mlx5_uar *uars;
155 int num_low_latency_uuars;
156 unsigned long *bitmap;
161 * protect uuar allocation data structs
169 void __iomem *regreg;
171 struct mlx5_uar *uar;
172 unsigned long offset;
174 /* protect blue flame buffer selection when needed
178 /* serialize 64 bit writes when done as two 32 bit accesses
184 struct mlx5_cmd_first {
188 struct mlx5_cmd_msg {
189 struct list_head list;
190 struct cache_ent *cache;
192 struct mlx5_cmd_first first;
193 struct mlx5_cmd_mailbox *next;
196 struct mlx5_cmd_debug {
197 struct dentry *dbg_root;
198 struct dentry *dbg_in;
199 struct dentry *dbg_out;
200 struct dentry *dbg_outlen;
201 struct dentry *dbg_status;
202 struct dentry *dbg_run;
211 /* protect block chain allocations
214 struct list_head head;
217 struct cmd_msg_cache {
218 struct cache_ent large;
219 struct cache_ent med;
223 struct mlx5_cmd_stats {
228 struct dentry *count;
229 /* protect command average calculations */
235 dma_addr_t alloc_dma;
246 /* protect command queue allocations
248 spinlock_t alloc_lock;
250 /* protect token allocations
252 spinlock_t token_lock;
254 unsigned long bitmask;
255 char wq_name[MLX5_CMD_WQ_MAX_NAME];
256 struct workqueue_struct *wq;
257 struct semaphore sem;
258 struct semaphore pages_sem;
260 struct mlx5_cmd_work_ent *ent_arr[MLX5_MAX_COMMANDS];
261 struct pci_pool *pool;
262 struct mlx5_cmd_debug dbg;
263 struct cmd_msg_cache cache;
264 int checksum_disabled;
265 struct mlx5_cmd_stats stats[MLX5_CMD_OP_MAX];
268 struct mlx5_port_caps {
273 struct mlx5_general_caps {
281 u8 log_max_bsf_list_size;
282 u8 log_max_klm_list_size;
289 int max_dc_sq_desc_sz;
291 u16 stat_rate_support;
294 u8 log_max_ra_res_qp;
295 u8 log_max_ra_req_qp;
298 int bf_regs_per_page;
299 struct mlx5_port_caps port[MLX5_MAX_PORTS];
300 u8 ext_port_cap[MLX5_MAX_PORTS];
303 u8 local_ca_ack_delay;
310 u8 log_max_ra_req_dc;
311 u8 log_max_ra_res_dc;
319 struct mlx5_general_caps gen;
322 struct mlx5_cmd_mailbox {
325 struct mlx5_cmd_mailbox *next;
328 struct mlx5_buf_list {
334 struct mlx5_buf_list direct;
341 struct mlx5_core_dev *dev;
342 __be32 __iomem *doorbell;
350 struct list_head list;
352 struct mlx5_rsc_debug *dbg;
355 struct mlx5_core_psv {
367 struct mlx5_core_sig_ctx {
368 struct mlx5_core_psv psv_memory;
369 struct mlx5_core_psv psv_wire;
370 struct ib_sig_err err_item;
371 bool sig_status_checked;
376 struct mlx5_core_mr {
387 struct mlx5_core_rsc_common {
388 enum mlx5_res_type res;
390 struct completion free;
393 struct mlx5_core_srq {
397 int max_avail_gather;
399 void (*event) (struct mlx5_core_srq *, enum mlx5_event);
402 struct completion free;
405 struct mlx5_eq_table {
406 void __iomem *update_ci;
407 void __iomem *update_arm_ci;
408 struct list_head comp_eqs_list;
409 struct mlx5_eq pages_eq;
410 struct mlx5_eq async_eq;
411 struct mlx5_eq cmd_eq;
412 int num_comp_vectors;
420 struct list_head bf_list;
421 unsigned free_bf_bmap;
422 void __iomem *wc_map;
427 struct mlx5_core_health {
428 struct health_buffer __iomem *health;
429 __be32 __iomem *health_counter;
430 struct timer_list timer;
431 struct list_head list;
436 struct mlx5_cq_table {
437 /* protect radix tree
440 struct radix_tree_root tree;
443 struct mlx5_qp_table {
444 /* protect radix tree
447 struct radix_tree_root tree;
450 struct mlx5_srq_table {
451 /* protect radix tree
454 struct radix_tree_root tree;
457 struct mlx5_mr_table {
458 /* protect radix tree
461 struct radix_tree_root tree;
464 struct mlx5_irq_info {
466 char name[MLX5_MAX_IRQ_NAME];
470 char name[MLX5_MAX_NAME_LEN];
471 struct mlx5_eq_table eq_table;
472 struct msix_entry *msix_arr;
473 struct mlx5_irq_info *irq_info;
474 struct mlx5_uuar_info uuari;
475 MLX5_DECLARE_DOORBELL_LOCK(cq_uar_lock);
478 struct workqueue_struct *pg_wq;
479 struct rb_root page_root;
482 struct list_head free_list;
484 struct mlx5_core_health health;
486 struct mlx5_srq_table srq_table;
488 /* start: qp staff */
489 struct mlx5_qp_table qp_table;
490 struct dentry *qp_debugfs;
491 struct dentry *eq_debugfs;
492 struct dentry *cq_debugfs;
493 struct dentry *cmdif_debugfs;
496 /* start: cq staff */
497 struct mlx5_cq_table cq_table;
500 /* start: mr staff */
501 struct mlx5_mr_table mr_table;
504 /* start: alloc staff */
505 struct mutex pgdir_mutex;
506 struct list_head pgdir_list;
507 /* end: alloc staff */
508 struct dentry *dbg_root;
510 /* protect mkey key part */
511 spinlock_t mkey_lock;
514 struct list_head dev_list;
515 struct list_head ctx_list;
519 struct mlx5_core_dev {
520 struct pci_dev *pdev;
522 char board_id[MLX5_BOARD_ID_LEN];
524 struct mlx5_caps caps;
525 phys_addr_t iseg_base;
526 struct mlx5_init_seg __iomem *iseg;
527 void (*event) (struct mlx5_core_dev *dev,
528 enum mlx5_dev_event event,
529 unsigned long param);
530 struct mlx5_priv priv;
531 struct mlx5_profile *profile;
538 struct mlx5_db_pgdir *pgdir;
539 struct mlx5_ib_user_db_page *user_page;
546 MLX5_DB_PER_PAGE = PAGE_SIZE / L1_CACHE_BYTES,
550 MLX5_COMP_EQ_SIZE = 1024,
553 struct mlx5_db_pgdir {
554 struct list_head list;
555 DECLARE_BITMAP(bitmap, MLX5_DB_PER_PAGE);
560 typedef void (*mlx5_cmd_cbk_t)(int status, void *context);
562 struct mlx5_cmd_work_ent {
563 struct mlx5_cmd_msg *in;
564 struct mlx5_cmd_msg *out;
567 mlx5_cmd_cbk_t callback;
570 struct completion done;
571 struct mlx5_cmd *cmd;
572 struct work_struct work;
573 struct mlx5_cmd_layout *lay;
588 static inline void *mlx5_buf_offset(struct mlx5_buf *buf, int offset)
590 return buf->direct.buf + offset;
593 extern struct workqueue_struct *mlx5_core_wq;
595 #define STRUCT_FIELD(header, field) \
596 .struct_offset_bytes = offsetof(struct ib_unpacked_ ## header, field), \
597 .struct_size_bytes = sizeof((struct ib_unpacked_ ## header *)0)->field
600 size_t struct_offset_bytes;
601 size_t struct_size_bytes;
606 static inline struct mlx5_core_dev *pci2mlx5_core_dev(struct pci_dev *pdev)
608 return pci_get_drvdata(pdev);
611 extern struct dentry *mlx5_debugfs_root;
613 static inline u16 fw_rev_maj(struct mlx5_core_dev *dev)
615 return ioread32be(&dev->iseg->fw_rev) & 0xffff;
618 static inline u16 fw_rev_min(struct mlx5_core_dev *dev)
620 return ioread32be(&dev->iseg->fw_rev) >> 16;
623 static inline u16 fw_rev_sub(struct mlx5_core_dev *dev)
625 return ioread32be(&dev->iseg->cmdif_rev_fw_sub) & 0xffff;
628 static inline u16 cmdif_rev(struct mlx5_core_dev *dev)
630 return ioread32be(&dev->iseg->cmdif_rev_fw_sub) >> 16;
633 static inline void *mlx5_vzalloc(unsigned long size)
637 rtn = kzalloc(size, GFP_KERNEL | __GFP_NOWARN);
643 static inline u32 mlx5_base_mkey(const u32 key)
645 return key & 0xffffff00u;
648 int mlx5_cmd_init(struct mlx5_core_dev *dev);
649 void mlx5_cmd_cleanup(struct mlx5_core_dev *dev);
650 void mlx5_cmd_use_events(struct mlx5_core_dev *dev);
651 void mlx5_cmd_use_polling(struct mlx5_core_dev *dev);
652 int mlx5_cmd_status_to_err(struct mlx5_outbox_hdr *hdr);
653 int mlx5_cmd_status_to_err_v2(void *ptr);
654 int mlx5_core_get_caps(struct mlx5_core_dev *dev, struct mlx5_caps *caps,
656 int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out,
658 int mlx5_cmd_exec_cb(struct mlx5_core_dev *dev, void *in, int in_size,
659 void *out, int out_size, mlx5_cmd_cbk_t callback,
661 int mlx5_cmd_alloc_uar(struct mlx5_core_dev *dev, u32 *uarn);
662 int mlx5_cmd_free_uar(struct mlx5_core_dev *dev, u32 uarn);
663 int mlx5_alloc_uuars(struct mlx5_core_dev *dev, struct mlx5_uuar_info *uuari);
664 int mlx5_free_uuars(struct mlx5_core_dev *dev, struct mlx5_uuar_info *uuari);
665 int mlx5_alloc_map_uar(struct mlx5_core_dev *mdev, struct mlx5_uar *uar);
666 void mlx5_unmap_free_uar(struct mlx5_core_dev *mdev, struct mlx5_uar *uar);
667 void mlx5_health_cleanup(void);
668 void __init mlx5_health_init(void);
669 void mlx5_start_health_poll(struct mlx5_core_dev *dev);
670 void mlx5_stop_health_poll(struct mlx5_core_dev *dev);
671 int mlx5_buf_alloc(struct mlx5_core_dev *dev, int size, struct mlx5_buf *buf);
672 void mlx5_buf_free(struct mlx5_core_dev *dev, struct mlx5_buf *buf);
673 struct mlx5_cmd_mailbox *mlx5_alloc_cmd_mailbox_chain(struct mlx5_core_dev *dev,
674 gfp_t flags, int npages);
675 void mlx5_free_cmd_mailbox_chain(struct mlx5_core_dev *dev,
676 struct mlx5_cmd_mailbox *head);
677 int mlx5_core_create_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
678 struct mlx5_create_srq_mbox_in *in, int inlen);
679 int mlx5_core_destroy_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq);
680 int mlx5_core_query_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
681 struct mlx5_query_srq_mbox_out *out);
682 int mlx5_core_arm_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
683 u16 lwm, int is_srq);
684 void mlx5_init_mr_table(struct mlx5_core_dev *dev);
685 void mlx5_cleanup_mr_table(struct mlx5_core_dev *dev);
686 int mlx5_core_create_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
687 struct mlx5_create_mkey_mbox_in *in, int inlen,
688 mlx5_cmd_cbk_t callback, void *context,
689 struct mlx5_create_mkey_mbox_out *out);
690 int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr);
691 int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
692 struct mlx5_query_mkey_mbox_out *out, int outlen);
693 int mlx5_core_dump_fill_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
695 int mlx5_core_alloc_pd(struct mlx5_core_dev *dev, u32 *pdn);
696 int mlx5_core_dealloc_pd(struct mlx5_core_dev *dev, u32 pdn);
697 int mlx5_core_mad_ifc(struct mlx5_core_dev *dev, void *inb, void *outb,
699 void mlx5_pagealloc_init(struct mlx5_core_dev *dev);
700 void mlx5_pagealloc_cleanup(struct mlx5_core_dev *dev);
701 int mlx5_pagealloc_start(struct mlx5_core_dev *dev);
702 void mlx5_pagealloc_stop(struct mlx5_core_dev *dev);
703 void mlx5_core_req_pages_handler(struct mlx5_core_dev *dev, u16 func_id,
705 int mlx5_satisfy_startup_pages(struct mlx5_core_dev *dev, int boot);
706 int mlx5_reclaim_startup_pages(struct mlx5_core_dev *dev);
707 void mlx5_register_debugfs(void);
708 void mlx5_unregister_debugfs(void);
709 int mlx5_eq_init(struct mlx5_core_dev *dev);
710 void mlx5_eq_cleanup(struct mlx5_core_dev *dev);
711 void mlx5_fill_page_array(struct mlx5_buf *buf, __be64 *pas);
712 void mlx5_cq_completion(struct mlx5_core_dev *dev, u32 cqn);
713 void mlx5_rsc_event(struct mlx5_core_dev *dev, u32 rsn, int event_type);
714 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
715 void mlx5_eq_pagefault(struct mlx5_core_dev *dev, struct mlx5_eqe *eqe);
717 void mlx5_srq_event(struct mlx5_core_dev *dev, u32 srqn, int event_type);
718 struct mlx5_core_srq *mlx5_core_get_srq(struct mlx5_core_dev *dev, u32 srqn);
719 void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, unsigned long vector);
720 void mlx5_cq_event(struct mlx5_core_dev *dev, u32 cqn, int event_type);
721 int mlx5_create_map_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq, u8 vecidx,
722 int nent, u64 mask, const char *name, struct mlx5_uar *uar);
723 int mlx5_destroy_unmap_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq);
724 int mlx5_start_eqs(struct mlx5_core_dev *dev);
725 int mlx5_stop_eqs(struct mlx5_core_dev *dev);
726 int mlx5_vector2eqn(struct mlx5_core_dev *dev, int vector, int *eqn, int *irqn);
727 int mlx5_core_attach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn);
728 int mlx5_core_detach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn);
730 int mlx5_qp_debugfs_init(struct mlx5_core_dev *dev);
731 void mlx5_qp_debugfs_cleanup(struct mlx5_core_dev *dev);
732 int mlx5_core_access_reg(struct mlx5_core_dev *dev, void *data_in,
733 int size_in, void *data_out, int size_out,
734 u16 reg_num, int arg, int write);
735 int mlx5_set_port_caps(struct mlx5_core_dev *dev, u8 port_num, u32 caps);
737 int mlx5_debug_eq_add(struct mlx5_core_dev *dev, struct mlx5_eq *eq);
738 void mlx5_debug_eq_remove(struct mlx5_core_dev *dev, struct mlx5_eq *eq);
739 int mlx5_core_eq_query(struct mlx5_core_dev *dev, struct mlx5_eq *eq,
740 struct mlx5_query_eq_mbox_out *out, int outlen);
741 int mlx5_eq_debugfs_init(struct mlx5_core_dev *dev);
742 void mlx5_eq_debugfs_cleanup(struct mlx5_core_dev *dev);
743 int mlx5_cq_debugfs_init(struct mlx5_core_dev *dev);
744 void mlx5_cq_debugfs_cleanup(struct mlx5_core_dev *dev);
745 int mlx5_db_alloc(struct mlx5_core_dev *dev, struct mlx5_db *db);
746 void mlx5_db_free(struct mlx5_core_dev *dev, struct mlx5_db *db);
748 const char *mlx5_command_str(int command);
749 int mlx5_cmdif_debugfs_init(struct mlx5_core_dev *dev);
750 void mlx5_cmdif_debugfs_cleanup(struct mlx5_core_dev *dev);
751 int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn,
752 int npsvs, u32 *sig_index);
753 int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num);
754 void mlx5_core_put_rsc(struct mlx5_core_rsc_common *common);
755 int mlx5_query_odp_caps(struct mlx5_core_dev *dev,
756 struct mlx5_odp_caps *odp_caps);
758 static inline u32 mlx5_mkey_to_idx(u32 mkey)
763 static inline u32 mlx5_idx_to_mkey(u32 mkey_idx)
765 return mkey_idx << 8;
768 static inline u8 mlx5_mkey_variant(u32 mkey)
774 MLX5_PROF_MASK_QP_SIZE = (u64)1 << 0,
775 MLX5_PROF_MASK_MR_CACHE = (u64)1 << 1,
779 MAX_MR_CACHE_ENTRIES = 16,
783 MLX5_INTERFACE_PROTOCOL_IB = 0,
784 MLX5_INTERFACE_PROTOCOL_ETH = 1,
787 struct mlx5_interface {
788 void * (*add)(struct mlx5_core_dev *dev);
789 void (*remove)(struct mlx5_core_dev *dev, void *context);
790 void (*event)(struct mlx5_core_dev *dev, void *context,
791 enum mlx5_dev_event event, unsigned long param);
792 void * (*get_dev)(void *context);
794 struct list_head list;
797 void *mlx5_get_protocol_dev(struct mlx5_core_dev *mdev, int protocol);
798 int mlx5_register_interface(struct mlx5_interface *intf);
799 void mlx5_unregister_interface(struct mlx5_interface *intf);
801 struct mlx5_profile {
807 } mr_cache[MAX_MR_CACHE_ENTRIES];
810 #endif /* MLX5_DRIVER_H */