1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
3 /* Authors: Cheng Xu <chengyou@linux.alibaba.com> */
4 /* Kai Shen <kaishen@linux.alibaba.com> */
5 /* Copyright (c) 2020-2022, Alibaba Group. */
10 #include <linux/kernel.h>
11 #include <linux/types.h>
13 /* PCIe device related definition. */
14 #define PCI_VENDOR_ID_ALIBABA 0x1ded
16 #define ERDMA_PCI_WIDTH 64
17 #define ERDMA_FUNC_BAR 0
18 #define ERDMA_MISX_BAR 2
20 #define ERDMA_BAR_MASK (BIT(ERDMA_FUNC_BAR) | BIT(ERDMA_MISX_BAR))
23 #define ERDMA_NUM_MSIX_VEC 32U
24 #define ERDMA_MSIX_VECTOR_CMDQ 0
26 /* PCIe Bar0 Registers. */
27 #define ERDMA_REGS_VERSION_REG 0x0
28 #define ERDMA_REGS_DEV_CTRL_REG 0x10
29 #define ERDMA_REGS_DEV_ST_REG 0x14
30 #define ERDMA_REGS_NETDEV_MAC_L_REG 0x18
31 #define ERDMA_REGS_NETDEV_MAC_H_REG 0x1C
32 #define ERDMA_REGS_CMDQ_SQ_ADDR_L_REG 0x20
33 #define ERDMA_REGS_CMDQ_SQ_ADDR_H_REG 0x24
34 #define ERDMA_REGS_CMDQ_CQ_ADDR_L_REG 0x28
35 #define ERDMA_REGS_CMDQ_CQ_ADDR_H_REG 0x2C
36 #define ERDMA_REGS_CMDQ_DEPTH_REG 0x30
37 #define ERDMA_REGS_CMDQ_EQ_DEPTH_REG 0x34
38 #define ERDMA_REGS_CMDQ_EQ_ADDR_L_REG 0x38
39 #define ERDMA_REGS_CMDQ_EQ_ADDR_H_REG 0x3C
40 #define ERDMA_REGS_AEQ_ADDR_L_REG 0x40
41 #define ERDMA_REGS_AEQ_ADDR_H_REG 0x44
42 #define ERDMA_REGS_AEQ_DEPTH_REG 0x48
43 #define ERDMA_REGS_GRP_NUM_REG 0x4c
44 #define ERDMA_REGS_AEQ_DB_REG 0x50
45 #define ERDMA_CMDQ_SQ_DB_HOST_ADDR_REG 0x60
46 #define ERDMA_CMDQ_CQ_DB_HOST_ADDR_REG 0x68
47 #define ERDMA_CMDQ_EQ_DB_HOST_ADDR_REG 0x70
48 #define ERDMA_AEQ_DB_HOST_ADDR_REG 0x78
49 #define ERDMA_REGS_STATS_TSO_IN_PKTS_REG 0x80
50 #define ERDMA_REGS_STATS_TSO_OUT_PKTS_REG 0x88
51 #define ERDMA_REGS_STATS_TSO_OUT_BYTES_REG 0x90
52 #define ERDMA_REGS_STATS_TX_DROP_PKTS_REG 0x98
53 #define ERDMA_REGS_STATS_TX_BPS_METER_DROP_PKTS_REG 0xa0
54 #define ERDMA_REGS_STATS_TX_PPS_METER_DROP_PKTS_REG 0xa8
55 #define ERDMA_REGS_STATS_RX_PKTS_REG 0xc0
56 #define ERDMA_REGS_STATS_RX_BYTES_REG 0xc8
57 #define ERDMA_REGS_STATS_RX_DROP_PKTS_REG 0xd0
58 #define ERDMA_REGS_STATS_RX_BPS_METER_DROP_PKTS_REG 0xd8
59 #define ERDMA_REGS_STATS_RX_PPS_METER_DROP_PKTS_REG 0xe0
60 #define ERDMA_REGS_CEQ_DB_BASE_REG 0x100
61 #define ERDMA_CMDQ_SQDB_REG 0x200
62 #define ERDMA_CMDQ_CQDB_REG 0x300
64 /* DEV_CTRL_REG details. */
65 #define ERDMA_REG_DEV_CTRL_RESET_MASK 0x00000001
66 #define ERDMA_REG_DEV_CTRL_INIT_MASK 0x00000002
68 /* DEV_ST_REG details. */
69 #define ERDMA_REG_DEV_ST_RESET_DONE_MASK 0x00000001U
70 #define ERDMA_REG_DEV_ST_INIT_DONE_MASK 0x00000002U
72 /* eRDMA PCIe DBs definition. */
73 #define ERDMA_BAR_DB_SPACE_BASE 4096
75 #define ERDMA_BAR_SQDB_SPACE_OFFSET ERDMA_BAR_DB_SPACE_BASE
76 #define ERDMA_BAR_SQDB_SPACE_SIZE (384 * 1024)
78 #define ERDMA_BAR_RQDB_SPACE_OFFSET \
79 (ERDMA_BAR_SQDB_SPACE_OFFSET + ERDMA_BAR_SQDB_SPACE_SIZE)
80 #define ERDMA_BAR_RQDB_SPACE_SIZE (96 * 1024)
82 #define ERDMA_BAR_CQDB_SPACE_OFFSET \
83 (ERDMA_BAR_RQDB_SPACE_OFFSET + ERDMA_BAR_RQDB_SPACE_SIZE)
85 /* Doorbell page resources related. */
87 * Max # of parallelly issued directSQE is 3072 per device,
88 * hardware organizes this into 24 group, per group has 128 credits.
90 #define ERDMA_DWQE_MAX_GRP_CNT 24
91 #define ERDMA_DWQE_NUM_PER_GRP 128
93 #define ERDMA_DWQE_TYPE0_CNT 64
94 #define ERDMA_DWQE_TYPE1_CNT 496
95 /* type1 DB contains 2 DBs, takes 256Byte. */
96 #define ERDMA_DWQE_TYPE1_CNT_PER_PAGE 16
98 #define ERDMA_SDB_SHARED_PAGE_INDEX 95
100 /* Doorbell related. */
101 #define ERDMA_DB_SIZE 8
103 #define ERDMA_CQDB_IDX_MASK GENMASK_ULL(63, 56)
104 #define ERDMA_CQDB_CQN_MASK GENMASK_ULL(55, 32)
105 #define ERDMA_CQDB_ARM_MASK BIT_ULL(31)
106 #define ERDMA_CQDB_SOL_MASK BIT_ULL(30)
107 #define ERDMA_CQDB_CMDSN_MASK GENMASK_ULL(29, 28)
108 #define ERDMA_CQDB_CI_MASK GENMASK_ULL(23, 0)
110 #define ERDMA_EQDB_ARM_MASK BIT(31)
111 #define ERDMA_EQDB_CI_MASK GENMASK_ULL(23, 0)
113 #define ERDMA_PAGE_SIZE_SUPPORT 0x7FFFF000
122 #define SQEBB_SIZE 32
123 #define SQEBB_SHIFT 5
124 #define SQEBB_MASK (~(SQEBB_SIZE - 1))
125 #define SQEBB_ALIGN(size) ((size + SQEBB_SIZE - 1) & SQEBB_MASK)
126 #define SQEBB_COUNT(size) (SQEBB_ALIGN(size) >> SQEBB_SHIFT)
128 #define ERDMA_MAX_SQE_SIZE 128
129 #define ERDMA_MAX_WQEBB_PER_SQE 4
132 #define ERDMA_CMDQ_MAX_OUTSTANDING 128
133 #define ERDMA_CMDQ_SQE_SIZE 64
135 /* cmdq sub module definition. */
136 enum CMDQ_WQE_SUB_MOD {
137 CMDQ_SUBMOD_RDMA = 0,
138 CMDQ_SUBMOD_COMMON = 1
141 enum CMDQ_RDMA_OPCODE {
142 CMDQ_OPCODE_QUERY_DEVICE = 0,
143 CMDQ_OPCODE_CREATE_QP = 1,
144 CMDQ_OPCODE_DESTROY_QP = 2,
145 CMDQ_OPCODE_MODIFY_QP = 3,
146 CMDQ_OPCODE_CREATE_CQ = 4,
147 CMDQ_OPCODE_DESTROY_CQ = 5,
148 CMDQ_OPCODE_REFLUSH = 6,
149 CMDQ_OPCODE_REG_MR = 8,
150 CMDQ_OPCODE_DEREG_MR = 9
153 enum CMDQ_COMMON_OPCODE {
154 CMDQ_OPCODE_CREATE_EQ = 0,
155 CMDQ_OPCODE_DESTROY_EQ = 1,
156 CMDQ_OPCODE_QUERY_FW_INFO = 2,
157 CMDQ_OPCODE_CONF_MTU = 3,
161 #define ERDMA_CMD_HDR_WQEBB_CNT_MASK GENMASK_ULL(54, 52)
162 #define ERDMA_CMD_HDR_CONTEXT_COOKIE_MASK GENMASK_ULL(47, 32)
163 #define ERDMA_CMD_HDR_SUB_MOD_MASK GENMASK_ULL(25, 24)
164 #define ERDMA_CMD_HDR_OPCODE_MASK GENMASK_ULL(23, 16)
165 #define ERDMA_CMD_HDR_WQEBB_INDEX_MASK GENMASK_ULL(15, 0)
167 struct erdma_cmdq_destroy_cq_req {
172 #define ERDMA_EQ_TYPE_AEQ 0
173 #define ERDMA_EQ_TYPE_CEQ 1
175 struct erdma_cmdq_create_eq_req {
186 struct erdma_cmdq_destroy_eq_req {
195 struct erdma_cmdq_config_mtu_req {
201 #define ERDMA_CMD_CREATE_CQ_DEPTH_MASK GENMASK(31, 24)
202 #define ERDMA_CMD_CREATE_CQ_PAGESIZE_MASK GENMASK(23, 20)
203 #define ERDMA_CMD_CREATE_CQ_CQN_MASK GENMASK(19, 0)
206 #define ERDMA_CMD_CREATE_CQ_MTT_CNT_MASK GENMASK(31, 16)
207 #define ERDMA_CMD_CREATE_CQ_MTT_TYPE_MASK BIT(15)
208 #define ERDMA_CMD_CREATE_CQ_EQN_MASK GENMASK(9, 0)
210 struct erdma_cmdq_create_cq_req {
217 u32 first_page_offset;
220 /* regmr/deregmr cfg0 */
221 #define ERDMA_CMD_MR_VALID_MASK BIT(31)
222 #define ERDMA_CMD_MR_KEY_MASK GENMASK(27, 20)
223 #define ERDMA_CMD_MR_MPT_IDX_MASK GENMASK(19, 0)
226 #define ERDMA_CMD_REGMR_PD_MASK GENMASK(31, 12)
227 #define ERDMA_CMD_REGMR_TYPE_MASK GENMASK(7, 6)
228 #define ERDMA_CMD_REGMR_RIGHT_MASK GENMASK(5, 1)
231 #define ERDMA_CMD_REGMR_PAGESIZE_MASK GENMASK(31, 27)
232 #define ERDMA_CMD_REGMR_MTT_TYPE_MASK GENMASK(21, 20)
233 #define ERDMA_CMD_REGMR_MTT_CNT_MASK GENMASK(19, 0)
235 struct erdma_cmdq_reg_mr_req {
245 struct erdma_cmdq_dereg_mr_req {
251 #define ERDMA_CMD_MODIFY_QP_STATE_MASK GENMASK(31, 24)
252 #define ERDMA_CMD_MODIFY_QP_CC_MASK GENMASK(23, 20)
253 #define ERDMA_CMD_MODIFY_QP_QPN_MASK GENMASK(19, 0)
255 struct erdma_cmdq_modify_qp_req {
268 #define ERDMA_CMD_CREATE_QP_SQ_DEPTH_MASK GENMASK(31, 20)
269 #define ERDMA_CMD_CREATE_QP_QPN_MASK GENMASK(19, 0)
272 #define ERDMA_CMD_CREATE_QP_RQ_DEPTH_MASK GENMASK(31, 20)
273 #define ERDMA_CMD_CREATE_QP_PD_MASK GENMASK(19, 0)
275 /* create qp cqn_mtt_cfg */
276 #define ERDMA_CMD_CREATE_QP_PAGE_SIZE_MASK GENMASK(31, 28)
277 #define ERDMA_CMD_CREATE_QP_CQN_MASK GENMASK(23, 0)
279 /* create qp mtt_cfg */
280 #define ERDMA_CMD_CREATE_QP_PAGE_OFFSET_MASK GENMASK(31, 12)
281 #define ERDMA_CMD_CREATE_QP_MTT_CNT_MASK GENMASK(11, 1)
282 #define ERDMA_CMD_CREATE_QP_MTT_TYPE_MASK BIT(0)
284 #define ERDMA_CMDQ_CREATE_QP_RESP_COOKIE_MASK GENMASK_ULL(31, 0)
286 struct erdma_cmdq_create_qp_req {
296 u64 sq_db_info_dma_addr;
297 u64 rq_db_info_dma_addr;
300 struct erdma_cmdq_destroy_qp_req {
305 struct erdma_cmdq_reflush_req {
312 /* cap qword 0 definition */
313 #define ERDMA_CMD_DEV_CAP_MAX_CQE_MASK GENMASK_ULL(47, 40)
314 #define ERDMA_CMD_DEV_CAP_FLAGS_MASK GENMASK_ULL(31, 24)
315 #define ERDMA_CMD_DEV_CAP_MAX_RECV_WR_MASK GENMASK_ULL(23, 16)
316 #define ERDMA_CMD_DEV_CAP_MAX_MR_SIZE_MASK GENMASK_ULL(7, 0)
318 /* cap qword 1 definition */
319 #define ERDMA_CMD_DEV_CAP_DMA_LOCAL_KEY_MASK GENMASK_ULL(63, 32)
320 #define ERDMA_CMD_DEV_CAP_DEFAULT_CC_MASK GENMASK_ULL(31, 28)
321 #define ERDMA_CMD_DEV_CAP_QBLOCK_MASK GENMASK_ULL(27, 16)
322 #define ERDMA_CMD_DEV_CAP_MAX_MW_MASK GENMASK_ULL(7, 0)
324 #define ERDMA_NQP_PER_QBLOCK 1024
327 ERDMA_DEV_CAP_FLAGS_ATOMIC = 1 << 7,
330 #define ERDMA_CMD_INFO0_FW_VER_MASK GENMASK_ULL(31, 0)
333 #define ERDMA_CQE_HDR_OWNER_MASK BIT(31)
334 #define ERDMA_CQE_HDR_OPCODE_MASK GENMASK(23, 16)
335 #define ERDMA_CQE_HDR_QTYPE_MASK GENMASK(15, 8)
336 #define ERDMA_CQE_HDR_SYNDROME_MASK GENMASK(7, 0)
338 #define ERDMA_CQE_QTYPE_SQ 0
339 #define ERDMA_CQE_QTYPE_RQ 1
340 #define ERDMA_CQE_QTYPE_CMDQ 2
360 /* Receive Queue Element */
373 #define ERDMA_SQE_HDR_SGL_LEN_MASK GENMASK_ULL(63, 56)
374 #define ERDMA_SQE_HDR_WQEBB_CNT_MASK GENMASK_ULL(54, 52)
375 #define ERDMA_SQE_HDR_QPN_MASK GENMASK_ULL(51, 32)
376 #define ERDMA_SQE_HDR_OPCODE_MASK GENMASK_ULL(31, 27)
377 #define ERDMA_SQE_HDR_DWQE_MASK BIT_ULL(26)
378 #define ERDMA_SQE_HDR_INLINE_MASK BIT_ULL(25)
379 #define ERDMA_SQE_HDR_FENCE_MASK BIT_ULL(24)
380 #define ERDMA_SQE_HDR_SE_MASK BIT_ULL(23)
381 #define ERDMA_SQE_HDR_CE_MASK BIT_ULL(22)
382 #define ERDMA_SQE_HDR_WQEBB_INDEX_MASK GENMASK_ULL(15, 0)
385 #define ERDMA_SQE_MR_ACCESS_MASK GENMASK(5, 1)
386 #define ERDMA_SQE_MR_MTT_TYPE_MASK GENMASK(7, 6)
387 #define ERDMA_SQE_MR_MTT_CNT_MASK GENMASK(31, 12)
389 struct erdma_write_sqe {
400 struct erdma_sge sgl[];
403 struct erdma_send_sqe {
411 struct erdma_sge sgl[];
414 struct erdma_readreq_sqe {
424 struct erdma_atomic_sqe {
427 __le64 fetchadd_swap_data;
430 struct erdma_sge remote;
431 struct erdma_sge sgl;
434 struct erdma_reg_mr_sqe {
444 #define ERDMA_DEFAULT_EQ_DEPTH 4096
447 #define ERDMA_CEQE_HDR_DB_MASK BIT_ULL(63)
448 #define ERDMA_CEQE_HDR_PI_MASK GENMASK_ULL(55, 32)
449 #define ERDMA_CEQE_HDR_O_MASK BIT_ULL(31)
450 #define ERDMA_CEQE_HDR_CQN_MASK GENMASK_ULL(19, 0)
453 #define ERDMA_AEQE_HDR_O_MASK BIT(31)
454 #define ERDMA_AEQE_HDR_TYPE_MASK GENMASK(23, 16)
455 #define ERDMA_AEQE_HDR_SUBTYPE_MASK GENMASK(7, 0)
457 #define ERDMA_AE_TYPE_QP_FATAL_EVENT 0
458 #define ERDMA_AE_TYPE_QP_ERQ_ERR_EVENT 1
459 #define ERDMA_AE_TYPE_ACC_ERR_EVENT 2
460 #define ERDMA_AE_TYPE_CQ_ERR 3
461 #define ERDMA_AE_TYPE_OTHER_ERROR 4
474 ERDMA_OP_SEND_WITH_IMM = 3,
476 ERDMA_OP_RECEIVE = 4,
477 ERDMA_OP_RECV_IMM = 5,
478 ERDMA_OP_RECV_INV = 6,
482 ERDMA_OP_WRITE_WITH_IMM = 9,
487 ERDMA_OP_RSP_SEND_IMM = 12,
488 ERDMA_OP_SEND_WITH_INV = 13,
490 ERDMA_OP_REG_MR = 14,
491 ERDMA_OP_LOCAL_INV = 15,
492 ERDMA_OP_READ_WITH_INV = 16,
493 ERDMA_OP_ATOMIC_CAS = 17,
494 ERDMA_OP_ATOMIC_FAA = 18,
495 ERDMA_NUM_OPCODES = 19,
496 ERDMA_OP_INVALID = ERDMA_NUM_OPCODES + 1
499 enum erdma_wc_status {
500 ERDMA_WC_SUCCESS = 0,
501 ERDMA_WC_GENERAL_ERR = 1,
502 ERDMA_WC_RECV_WQE_FORMAT_ERR = 2,
503 ERDMA_WC_RECV_STAG_INVALID_ERR = 3,
504 ERDMA_WC_RECV_ADDR_VIOLATION_ERR = 4,
505 ERDMA_WC_RECV_RIGHT_VIOLATION_ERR = 5,
506 ERDMA_WC_RECV_PDID_ERR = 6,
507 ERDMA_WC_RECV_WARRPING_ERR = 7,
508 ERDMA_WC_SEND_WQE_FORMAT_ERR = 8,
509 ERDMA_WC_SEND_WQE_ORD_EXCEED = 9,
510 ERDMA_WC_SEND_STAG_INVALID_ERR = 10,
511 ERDMA_WC_SEND_ADDR_VIOLATION_ERR = 11,
512 ERDMA_WC_SEND_RIGHT_VIOLATION_ERR = 12,
513 ERDMA_WC_SEND_PDID_ERR = 13,
514 ERDMA_WC_SEND_WARRPING_ERR = 14,
515 ERDMA_WC_FLUSH_ERR = 15,
516 ERDMA_WC_RETRY_EXC_ERR = 16,
520 enum erdma_vendor_err {
521 ERDMA_WC_VENDOR_NO_ERR = 0,
522 ERDMA_WC_VENDOR_INVALID_RQE = 1,
523 ERDMA_WC_VENDOR_RQE_INVALID_STAG = 2,
524 ERDMA_WC_VENDOR_RQE_ADDR_VIOLATION = 3,
525 ERDMA_WC_VENDOR_RQE_ACCESS_RIGHT_ERR = 4,
526 ERDMA_WC_VENDOR_RQE_INVALID_PD = 5,
527 ERDMA_WC_VENDOR_RQE_WRAP_ERR = 6,
528 ERDMA_WC_VENDOR_INVALID_SQE = 0x20,
529 ERDMA_WC_VENDOR_ZERO_ORD = 0x21,
530 ERDMA_WC_VENDOR_SQE_INVALID_STAG = 0x30,
531 ERDMA_WC_VENDOR_SQE_ADDR_VIOLATION = 0x31,
532 ERDMA_WC_VENDOR_SQE_ACCESS_ERR = 0x32,
533 ERDMA_WC_VENDOR_SQE_INVALID_PD = 0x33,
534 ERDMA_WC_VENDOR_SQE_WARP_ERR = 0x34