1 /* QLogic qedr NIC Driver
2 * Copyright (c) 2015-2016 QLogic Corporation
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
35 #include <linux/pci.h>
36 #include <linux/xarray.h>
37 #include <rdma/ib_addr.h>
38 #include <linux/qed/qed_if.h>
39 #include <linux/qed/qed_chain.h>
40 #include <linux/qed/qed_rdma_if.h>
41 #include <linux/qed/qede_rdma.h>
42 #include <linux/qed/roce_common.h>
43 #include <linux/completion.h>
44 #include "qedr_hsi_rdma.h"
46 #define QEDR_NODE_DESC "QLogic 579xx RoCE HCA"
47 #define DP_NAME(_dev) dev_name(&(_dev)->ibdev.dev)
48 #define IS_IWARP(_dev) ((_dev)->rdma_type == QED_RDMA_TYPE_IWARP)
49 #define IS_ROCE(_dev) ((_dev)->rdma_type == QED_RDMA_TYPE_ROCE)
51 #define DP_DEBUG(dev, module, fmt, ...) \
52 pr_debug("(%s) " module ": " fmt, \
53 DP_NAME(dev) ? DP_NAME(dev) : "", ## __VA_ARGS__)
55 #define QEDR_MSG_INIT "INIT"
56 #define QEDR_MSG_MISC "MISC"
57 #define QEDR_MSG_CQ " CQ"
58 #define QEDR_MSG_MR " MR"
59 #define QEDR_MSG_RQ " RQ"
60 #define QEDR_MSG_SQ " SQ"
61 #define QEDR_MSG_QP " QP"
62 #define QEDR_MSG_SRQ " SRQ"
63 #define QEDR_MSG_GSI " GSI"
64 #define QEDR_MSG_IWARP " IW"
66 #define QEDR_CQ_MAGIC_NUMBER (0x11223344)
68 #define FW_PAGE_SIZE (RDMA_RING_PAGE_SIZE)
69 #define FW_PAGE_SHIFT (12)
76 struct qed_sb_info
*sb
;
83 #define QEDR_MAX_SGID 128
85 struct qedr_device_attr
{
97 u8 max_qp_resp_rd_atomic_resc
;
98 u8 max_qp_req_rd_atomic_resc
;
99 u64 max_dev_resp_rd_atomic_resc
;
106 u32 max_mr_mw_fmr_pbl
;
107 u64 max_mr_mw_fmr_size
;
120 u32 bad_pkey_counter
;
121 struct qed_rdma_events events
;
124 #define QEDR_ENET_STATE_BIT (0)
127 struct ib_device ibdev
;
128 struct qed_dev
*cdev
;
129 struct pci_dev
*pdev
;
130 struct net_device
*ndev
;
132 enum ib_atomic_cap atomic_cap
;
135 struct qedr_device_attr attr
;
137 const struct qed_rdma_ops
*ops
;
138 struct qed_int_info int_info
;
140 struct qed_sb_info
*sb_array
;
141 struct qedr_cnq
*cnq_array
;
145 void __iomem
*db_addr
;
150 union ib_gid
*sgid_tbl
;
152 /* Lock for sgid table */
153 spinlock_t sgid_lock
;
160 #define QEDR_IS_CMT(dev) ((dev)->num_hwfns > 1)
165 u8 gsi_ll2_mac_address
[ETH_ALEN
];
167 struct qedr_cq
*gsi_sqcq
;
168 struct qedr_cq
*gsi_rqcq
;
169 struct qedr_qp
*gsi_qp
;
170 enum qed_rdma_type rdma_type
;
173 struct workqueue_struct
*iwarp_wq
;
176 unsigned long enet_state
;
181 #define QEDR_MAX_SQ_PBL (0x8000)
182 #define QEDR_MAX_SQ_PBL_ENTRIES (0x10000 / sizeof(void *))
183 #define QEDR_SQE_ELEMENT_SIZE (sizeof(struct rdma_sq_sge))
184 #define QEDR_MAX_SQE_ELEMENTS_PER_SQE (ROCE_REQ_MAX_SINGLE_SQ_WQE_SIZE / \
185 QEDR_SQE_ELEMENT_SIZE)
186 #define QEDR_MAX_SQE_ELEMENTS_PER_PAGE ((RDMA_RING_PAGE_SIZE) / \
187 QEDR_SQE_ELEMENT_SIZE)
188 #define QEDR_MAX_SQE ((QEDR_MAX_SQ_PBL_ENTRIES) *\
189 (RDMA_RING_PAGE_SIZE) / \
190 (QEDR_SQE_ELEMENT_SIZE) /\
191 (QEDR_MAX_SQE_ELEMENTS_PER_SQE))
193 #define QEDR_MAX_RQ_PBL (0x2000)
194 #define QEDR_MAX_RQ_PBL_ENTRIES (0x10000 / sizeof(void *))
195 #define QEDR_RQE_ELEMENT_SIZE (sizeof(struct rdma_rq_sge))
196 #define QEDR_MAX_RQE_ELEMENTS_PER_RQE (RDMA_MAX_SGE_PER_RQ_WQE)
197 #define QEDR_MAX_RQE_ELEMENTS_PER_PAGE ((RDMA_RING_PAGE_SIZE) / \
198 QEDR_RQE_ELEMENT_SIZE)
199 #define QEDR_MAX_RQE ((QEDR_MAX_RQ_PBL_ENTRIES) *\
200 (RDMA_RING_PAGE_SIZE) / \
201 (QEDR_RQE_ELEMENT_SIZE) /\
202 (QEDR_MAX_RQE_ELEMENTS_PER_RQE))
204 #define QEDR_CQE_SIZE (sizeof(union rdma_cqe))
205 #define QEDR_MAX_CQE_PBL_SIZE (512 * 1024)
206 #define QEDR_MAX_CQE_PBL_ENTRIES (((QEDR_MAX_CQE_PBL_SIZE) / \
208 #define QEDR_MAX_CQES ((u32)((QEDR_MAX_CQE_PBL_ENTRIES) * \
209 (QED_CHAIN_PAGE_SIZE) / QEDR_CQE_SIZE))
211 #define QEDR_ROCE_MAX_CNQ_SIZE (0x4000)
213 #define QEDR_MAX_PORT (1)
214 #define QEDR_PORT (1)
216 #define QEDR_UVERBS(CMD_NAME) (1ull << IB_USER_VERBS_CMD_##CMD_NAME)
218 #define QEDR_ROCE_PKEY_MAX 1
219 #define QEDR_ROCE_PKEY_TABLE_LEN 1
220 #define QEDR_ROCE_PKEY_DEFAULT 0xffff
223 struct list_head list_entry
;
228 struct qedr_ucontext
{
229 struct ib_ucontext ibucontext
;
230 struct qedr_dev
*dev
;
232 void __iomem
*dpi_addr
;
233 struct rdma_user_mmap_entry
*db_mmap_entry
;
242 struct rdma_pwm_val16_data data
;
247 struct rdma_pwm_val32_data data
;
257 struct qedr_pbl_info
{
266 struct ib_umem
*umem
;
267 struct qedr_pbl_info pbl_info
;
268 struct qedr_pbl
*pbl_tbl
;
272 /* doorbell recovery */
273 void __iomem
*db_addr
;
274 struct qedr_user_db_rec
*db_rec_data
;
275 struct rdma_user_mmap_entry
*db_mmap_entry
;
276 void __iomem
*db_rec_db2_addr
;
277 union db_prod32 db_rec_db2_data
;
283 enum qedr_cq_type cq_type
;
288 /* Lock to protect multiplem CQ's */
291 struct qed_chain pbl
;
293 void __iomem
*db_addr
;
297 union rdma_cqe
*latest_cqe
;
298 union rdma_cqe
*toggle_cqe
;
310 struct qedr_ucontext
*uctx
;
314 struct ib_xrcd ibxrcd
;
318 struct qedr_qp_hwq_info
{
320 struct qed_chain pbl
;
333 union db_prod32 db_data
;
335 void __iomem
*iwarp_db2
;
336 union db_prod32 iwarp_db2_data
;
339 #define QEDR_INC_SW_IDX(p_info, index) \
341 p_info->index = (p_info->index + 1) & \
342 qed_chain_get_capacity(p_info->pbl) \
345 struct qedr_srq_hwq_info
{
348 struct qed_chain pbl
;
353 atomic_t wr_cons_cnt
;
356 struct rdma_srq_producers
*virt_prod_pair_addr
;
357 dma_addr_t phy_prod_pair_addr
;
362 struct qedr_dev
*dev
;
364 struct qedr_userq usrq
;
365 struct qedr_srq_hwq_info hw_srq
;
366 struct ib_umem
*prod_umem
;
370 /* lock to protect srq recv post */
374 enum qedr_qp_err_bitmap
{
375 QEDR_QP_ERR_SQ_FULL
= 1,
376 QEDR_QP_ERR_RQ_FULL
= 2,
377 QEDR_QP_ERR_BAD_SR
= 4,
378 QEDR_QP_ERR_BAD_RR
= 8,
379 QEDR_QP_ERR_SQ_PBL_FULL
= 16,
380 QEDR_QP_ERR_RQ_PBL_FULL
= 32,
383 enum qedr_qp_create_type
{
386 QEDR_QP_CREATE_KERNEL
,
389 enum qedr_iwarp_cm_flags
{
390 QEDR_IWARP_CM_WAIT_FOR_CONNECT
= BIT(0),
391 QEDR_IWARP_CM_WAIT_FOR_DISCONNECT
= BIT(1),
395 struct ib_qp ibqp
; /* must be first */
396 struct qedr_dev
*dev
;
397 struct qedr_qp_hwq_info sq
;
398 struct qedr_qp_hwq_info rq
;
404 struct qedr_cq
*sq_cq
;
405 struct qedr_cq
*rq_cq
;
406 struct qedr_srq
*srq
;
407 enum qed_roce_qp_state state
;
410 enum ib_qp_type qp_type
;
411 enum qedr_qp_create_type create_type
;
412 struct qed_rdma_qp
*qed_qp
;
422 /* Relevant to qps created from kernel space only (ULPs) */
431 enum ib_wc_opcode opcode
;
435 dma_addr_t icrc_mapping
;
443 struct ib_sge sg_list
[RDMA_MAX_SGE_PER_RQ_WQE
];
451 /* Relevant to qps created from user space only (applications) */
452 struct qedr_userq usq
;
453 struct qedr_userq urq
;
455 /* synchronization objects used with iwarp ep */
457 struct completion iwarp_cm_comp
;
458 unsigned long iwarp_cm_flags
; /* enum iwarp_cm_flags */
463 struct rdma_ah_attr attr
;
474 struct qedr_pbl
*pbl_table
;
475 struct qedr_pbl_info pbl_info
;
476 struct list_head free_pbl_list
;
477 struct list_head inuse_pbl_list
;
479 u32 completed_handled
;
484 struct ib_umem
*umem
;
486 struct qed_rdma_register_tid_in_params hw_mr
;
487 enum qedr_mr_type type
;
489 struct qedr_dev
*dev
;
496 struct qedr_user_mmap_entry
{
497 struct rdma_user_mmap_entry rdma_entry
;
498 struct qedr_dev
*dev
;
508 #define SET_FIELD2(value, name, flag) ((value) |= ((flag) << (name ## _SHIFT)))
510 #define QEDR_RESP_IMM (RDMA_CQE_RESPONDER_IMM_FLG_MASK << \
511 RDMA_CQE_RESPONDER_IMM_FLG_SHIFT)
512 #define QEDR_RESP_RDMA (RDMA_CQE_RESPONDER_RDMA_FLG_MASK << \
513 RDMA_CQE_RESPONDER_RDMA_FLG_SHIFT)
514 #define QEDR_RESP_INV (RDMA_CQE_RESPONDER_INV_FLG_MASK << \
515 RDMA_CQE_RESPONDER_INV_FLG_SHIFT)
517 static inline void qedr_inc_sw_cons(struct qedr_qp_hwq_info
*info
)
519 info
->cons
= (info
->cons
+ 1) % info
->max_wr
;
523 static inline void qedr_inc_sw_prod(struct qedr_qp_hwq_info
*info
)
525 info
->prod
= (info
->prod
+ 1) % info
->max_wr
;
528 static inline int qedr_get_dmac(struct qedr_dev
*dev
,
529 struct rdma_ah_attr
*ah_attr
, u8
*mac_addr
)
531 union ib_gid zero_sgid
= { { 0 } };
533 const struct ib_global_route
*grh
= rdma_ah_read_grh(ah_attr
);
536 if (!memcmp(&grh
->dgid
, &zero_sgid
, sizeof(union ib_gid
))) {
537 DP_ERR(dev
, "Local port GID not supported\n");
538 eth_zero_addr(mac_addr
);
542 memcpy(&in6
, grh
->dgid
.raw
, sizeof(in6
));
543 dmac
= rdma_ah_retrieve_dmac(ah_attr
);
546 ether_addr_copy(mac_addr
, dmac
);
551 struct qedr_iw_listener
{
552 struct qedr_dev
*dev
;
553 struct iw_cm_id
*cm_id
;
559 struct qedr_dev
*dev
;
560 struct iw_cm_id
*cm_id
;
567 struct qedr_ucontext
*get_qedr_ucontext(struct ib_ucontext
*ibucontext
)
569 return container_of(ibucontext
, struct qedr_ucontext
, ibucontext
);
572 static inline struct qedr_dev
*get_qedr_dev(struct ib_device
*ibdev
)
574 return container_of(ibdev
, struct qedr_dev
, ibdev
);
577 static inline struct qedr_pd
*get_qedr_pd(struct ib_pd
*ibpd
)
579 return container_of(ibpd
, struct qedr_pd
, ibpd
);
582 static inline struct qedr_xrcd
*get_qedr_xrcd(struct ib_xrcd
*ibxrcd
)
584 return container_of(ibxrcd
, struct qedr_xrcd
, ibxrcd
);
587 static inline struct qedr_cq
*get_qedr_cq(struct ib_cq
*ibcq
)
589 return container_of(ibcq
, struct qedr_cq
, ibcq
);
592 static inline struct qedr_qp
*get_qedr_qp(struct ib_qp
*ibqp
)
594 return container_of(ibqp
, struct qedr_qp
, ibqp
);
597 static inline struct qedr_ah
*get_qedr_ah(struct ib_ah
*ibah
)
599 return container_of(ibah
, struct qedr_ah
, ibah
);
602 static inline struct qedr_mr
*get_qedr_mr(struct ib_mr
*ibmr
)
604 return container_of(ibmr
, struct qedr_mr
, ibmr
);
607 static inline struct qedr_srq
*get_qedr_srq(struct ib_srq
*ibsrq
)
609 return container_of(ibsrq
, struct qedr_srq
, ibsrq
);
612 static inline bool qedr_qp_has_srq(struct qedr_qp
*qp
)
617 static inline bool qedr_qp_has_sq(struct qedr_qp
*qp
)
619 if (qp
->qp_type
== IB_QPT_GSI
|| qp
->qp_type
== IB_QPT_XRC_TGT
)
625 static inline bool qedr_qp_has_rq(struct qedr_qp
*qp
)
627 if (qp
->qp_type
== IB_QPT_GSI
|| qp
->qp_type
== IB_QPT_XRC_INI
||
628 qp
->qp_type
== IB_QPT_XRC_TGT
|| qedr_qp_has_srq(qp
))
634 static inline struct qedr_user_mmap_entry
*
635 get_qedr_mmap_entry(struct rdma_user_mmap_entry
*rdma_entry
)
637 return container_of(rdma_entry
, struct qedr_user_mmap_entry
,