1 /*
2 * Copyright (c) 2016-2017 Hisilicon Limited.
3 *
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:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
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.
22 *
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
30 * SOFTWARE.
31 */
32
33 #include <linux/acpi.h>
34 #include <linux/etherdevice.h>
35 #include <linux/interrupt.h>
36 #include <linux/iopoll.h>
37 #include <linux/kernel.h>
38 #include <linux/types.h>
39 #include <net/addrconf.h>
40 #include <rdma/ib_addr.h>
41 #include <rdma/ib_cache.h>
42 #include <rdma/ib_umem.h>
43 #include <rdma/uverbs_ioctl.h>
44
45 #include "hnae3.h"
46 #include "hns_roce_common.h"
47 #include "hns_roce_device.h"
48 #include "hns_roce_cmd.h"
49 #include "hns_roce_hem.h"
50 #include "hns_roce_hw_v2.h"
51
52 enum {
53 CMD_RST_PRC_OTHERS,
54 CMD_RST_PRC_SUCCESS,
55 CMD_RST_PRC_EBUSY,
56 };
57
58 enum ecc_resource_type {
59 ECC_RESOURCE_QPC,
60 ECC_RESOURCE_CQC,
61 ECC_RESOURCE_MPT,
62 ECC_RESOURCE_SRQC,
63 ECC_RESOURCE_GMV,
64 ECC_RESOURCE_QPC_TIMER,
65 ECC_RESOURCE_CQC_TIMER,
66 ECC_RESOURCE_SCCC,
67 ECC_RESOURCE_COUNT,
68 };
69
70 static const struct {
71 const char *name;
72 u8 read_bt0_op;
73 u8 write_bt0_op;
74 } fmea_ram_res[] = {
75 { "ECC_RESOURCE_QPC",
76 HNS_ROCE_CMD_READ_QPC_BT0, HNS_ROCE_CMD_WRITE_QPC_BT0 },
77 { "ECC_RESOURCE_CQC",
78 HNS_ROCE_CMD_READ_CQC_BT0, HNS_ROCE_CMD_WRITE_CQC_BT0 },
79 { "ECC_RESOURCE_MPT",
80 HNS_ROCE_CMD_READ_MPT_BT0, HNS_ROCE_CMD_WRITE_MPT_BT0 },
81 { "ECC_RESOURCE_SRQC",
82 HNS_ROCE_CMD_READ_SRQC_BT0, HNS_ROCE_CMD_WRITE_SRQC_BT0 },
83 /* ECC_RESOURCE_GMV is handled by cmdq, not mailbox */
84 { "ECC_RESOURCE_GMV",
85 0, 0 },
86 { "ECC_RESOURCE_QPC_TIMER",
87 HNS_ROCE_CMD_READ_QPC_TIMER_BT0, HNS_ROCE_CMD_WRITE_QPC_TIMER_BT0 },
88 { "ECC_RESOURCE_CQC_TIMER",
89 HNS_ROCE_CMD_READ_CQC_TIMER_BT0, HNS_ROCE_CMD_WRITE_CQC_TIMER_BT0 },
90 { "ECC_RESOURCE_SCCC",
91 HNS_ROCE_CMD_READ_SCCC_BT0, HNS_ROCE_CMD_WRITE_SCCC_BT0 },
92 };
93
set_data_seg_v2(struct hns_roce_v2_wqe_data_seg * dseg,struct ib_sge * sg)94 static inline void set_data_seg_v2(struct hns_roce_v2_wqe_data_seg *dseg,
95 struct ib_sge *sg)
96 {
97 dseg->lkey = cpu_to_le32(sg->lkey);
98 dseg->addr = cpu_to_le64(sg->addr);
99 dseg->len = cpu_to_le32(sg->length);
100 }
101
102 /*
103 * mapped-value = 1 + real-value
104 * The hns wr opcode real value is start from 0, In order to distinguish between
105 * initialized and uninitialized map values, we plus 1 to the actual value when
106 * defining the mapping, so that the validity can be identified by checking the
107 * mapped value is greater than 0.
108 */
109 #define HR_OPC_MAP(ib_key, hr_key) \
110 [IB_WR_ ## ib_key] = 1 + HNS_ROCE_V2_WQE_OP_ ## hr_key
111
112 static const u32 hns_roce_op_code[] = {
113 HR_OPC_MAP(RDMA_WRITE, RDMA_WRITE),
114 HR_OPC_MAP(RDMA_WRITE_WITH_IMM, RDMA_WRITE_WITH_IMM),
115 HR_OPC_MAP(SEND, SEND),
116 HR_OPC_MAP(SEND_WITH_IMM, SEND_WITH_IMM),
117 HR_OPC_MAP(RDMA_READ, RDMA_READ),
118 HR_OPC_MAP(ATOMIC_CMP_AND_SWP, ATOM_CMP_AND_SWAP),
119 HR_OPC_MAP(ATOMIC_FETCH_AND_ADD, ATOM_FETCH_AND_ADD),
120 HR_OPC_MAP(SEND_WITH_INV, SEND_WITH_INV),
121 HR_OPC_MAP(MASKED_ATOMIC_CMP_AND_SWP, ATOM_MSK_CMP_AND_SWAP),
122 HR_OPC_MAP(MASKED_ATOMIC_FETCH_AND_ADD, ATOM_MSK_FETCH_AND_ADD),
123 HR_OPC_MAP(REG_MR, FAST_REG_PMR),
124 };
125
to_hr_opcode(u32 ib_opcode)126 static u32 to_hr_opcode(u32 ib_opcode)
127 {
128 if (ib_opcode >= ARRAY_SIZE(hns_roce_op_code))
129 return HNS_ROCE_V2_WQE_OP_MASK;
130
131 return hns_roce_op_code[ib_opcode] ? hns_roce_op_code[ib_opcode] - 1 :
132 HNS_ROCE_V2_WQE_OP_MASK;
133 }
134
set_frmr_seg(struct hns_roce_v2_rc_send_wqe * rc_sq_wqe,const struct ib_reg_wr * wr)135 static void set_frmr_seg(struct hns_roce_v2_rc_send_wqe *rc_sq_wqe,
136 const struct ib_reg_wr *wr)
137 {
138 struct hns_roce_wqe_frmr_seg *fseg =
139 (void *)rc_sq_wqe + sizeof(struct hns_roce_v2_rc_send_wqe);
140 struct hns_roce_mr *mr = to_hr_mr(wr->mr);
141 u64 pbl_ba;
142
143 /* use ib_access_flags */
144 hr_reg_write_bool(fseg, FRMR_BIND_EN, wr->access & IB_ACCESS_MW_BIND);
145 hr_reg_write_bool(fseg, FRMR_ATOMIC,
146 wr->access & IB_ACCESS_REMOTE_ATOMIC);
147 hr_reg_write_bool(fseg, FRMR_RR, wr->access & IB_ACCESS_REMOTE_READ);
148 hr_reg_write_bool(fseg, FRMR_RW, wr->access & IB_ACCESS_REMOTE_WRITE);
149 hr_reg_write_bool(fseg, FRMR_LW, wr->access & IB_ACCESS_LOCAL_WRITE);
150
151 /* Data structure reuse may lead to confusion */
152 pbl_ba = mr->pbl_mtr.hem_cfg.root_ba;
153 rc_sq_wqe->msg_len = cpu_to_le32(lower_32_bits(pbl_ba));
154 rc_sq_wqe->inv_key = cpu_to_le32(upper_32_bits(pbl_ba));
155
156 rc_sq_wqe->byte_16 = cpu_to_le32(wr->mr->length & 0xffffffff);
157 rc_sq_wqe->byte_20 = cpu_to_le32(wr->mr->length >> 32);
158 rc_sq_wqe->rkey = cpu_to_le32(wr->key);
159 rc_sq_wqe->va = cpu_to_le64(wr->mr->iova);
160
161 hr_reg_write(fseg, FRMR_PBL_SIZE, mr->npages);
162 hr_reg_write(fseg, FRMR_PBL_BUF_PG_SZ,
163 to_hr_hw_page_shift(mr->pbl_mtr.hem_cfg.buf_pg_shift));
164 hr_reg_clear(fseg, FRMR_BLK_MODE);
165 }
166
set_atomic_seg(const struct ib_send_wr * wr,struct hns_roce_v2_rc_send_wqe * rc_sq_wqe,unsigned int valid_num_sge)167 static void set_atomic_seg(const struct ib_send_wr *wr,
168 struct hns_roce_v2_rc_send_wqe *rc_sq_wqe,
169 unsigned int valid_num_sge)
170 {
171 struct hns_roce_v2_wqe_data_seg *dseg =
172 (void *)rc_sq_wqe + sizeof(struct hns_roce_v2_rc_send_wqe);
173 struct hns_roce_wqe_atomic_seg *aseg =
174 (void *)dseg + sizeof(struct hns_roce_v2_wqe_data_seg);
175
176 set_data_seg_v2(dseg, wr->sg_list);
177
178 if (wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP) {
179 aseg->fetchadd_swap_data = cpu_to_le64(atomic_wr(wr)->swap);
180 aseg->cmp_data = cpu_to_le64(atomic_wr(wr)->compare_add);
181 } else {
182 aseg->fetchadd_swap_data =
183 cpu_to_le64(atomic_wr(wr)->compare_add);
184 aseg->cmp_data = 0;
185 }
186
187 hr_reg_write(rc_sq_wqe, RC_SEND_WQE_SGE_NUM, valid_num_sge);
188 }
189
fill_ext_sge_inl_data(struct hns_roce_qp * qp,const struct ib_send_wr * wr,unsigned int * sge_idx,u32 msg_len)190 static int fill_ext_sge_inl_data(struct hns_roce_qp *qp,
191 const struct ib_send_wr *wr,
192 unsigned int *sge_idx, u32 msg_len)
193 {
194 struct ib_device *ibdev = &(to_hr_dev(qp->ibqp.device))->ib_dev;
195 unsigned int left_len_in_pg;
196 unsigned int idx = *sge_idx;
197 unsigned int i = 0;
198 unsigned int len;
199 void *addr;
200 void *dseg;
201
202 if (msg_len > qp->sq.ext_sge_cnt * HNS_ROCE_SGE_SIZE) {
203 ibdev_err(ibdev,
204 "no enough extended sge space for inline data.\n");
205 return -EINVAL;
206 }
207
208 dseg = hns_roce_get_extend_sge(qp, idx & (qp->sge.sge_cnt - 1));
209 left_len_in_pg = hr_hw_page_align((uintptr_t)dseg) - (uintptr_t)dseg;
210 len = wr->sg_list[0].length;
211 addr = (void *)(unsigned long)(wr->sg_list[0].addr);
212
213 /* When copying data to extended sge space, the left length in page may
214 * not long enough for current user's sge. So the data should be
215 * splited into several parts, one in the first page, and the others in
216 * the subsequent pages.
217 */
218 while (1) {
219 if (len <= left_len_in_pg) {
220 memcpy(dseg, addr, len);
221
222 idx += len / HNS_ROCE_SGE_SIZE;
223
224 i++;
225 if (i >= wr->num_sge)
226 break;
227
228 left_len_in_pg -= len;
229 len = wr->sg_list[i].length;
230 addr = (void *)(unsigned long)(wr->sg_list[i].addr);
231 dseg += len;
232 } else {
233 memcpy(dseg, addr, left_len_in_pg);
234
235 len -= left_len_in_pg;
236 addr += left_len_in_pg;
237 idx += left_len_in_pg / HNS_ROCE_SGE_SIZE;
238 dseg = hns_roce_get_extend_sge(qp,
239 idx & (qp->sge.sge_cnt - 1));
240 left_len_in_pg = 1 << HNS_HW_PAGE_SHIFT;
241 }
242 }
243
244 *sge_idx = idx;
245
246 return 0;
247 }
248
set_extend_sge(struct hns_roce_qp * qp,struct ib_sge * sge,unsigned int * sge_ind,unsigned int cnt)249 static void set_extend_sge(struct hns_roce_qp *qp, struct ib_sge *sge,
250 unsigned int *sge_ind, unsigned int cnt)
251 {
252 struct hns_roce_v2_wqe_data_seg *dseg;
253 unsigned int idx = *sge_ind;
254
255 while (cnt > 0) {
256 dseg = hns_roce_get_extend_sge(qp, idx & (qp->sge.sge_cnt - 1));
257 if (likely(sge->length)) {
258 set_data_seg_v2(dseg, sge);
259 idx++;
260 cnt--;
261 }
262 sge++;
263 }
264
265 *sge_ind = idx;
266 }
267
check_inl_data_len(struct hns_roce_qp * qp,unsigned int len)268 static bool check_inl_data_len(struct hns_roce_qp *qp, unsigned int len)
269 {
270 struct hns_roce_dev *hr_dev = to_hr_dev(qp->ibqp.device);
271 int mtu = ib_mtu_enum_to_int(qp->path_mtu);
272
273 if (mtu < 0 || len > qp->max_inline_data || len > mtu) {
274 ibdev_err(&hr_dev->ib_dev,
275 "invalid length of data, data len = %u, max inline len = %u, path mtu = %d.\n",
276 len, qp->max_inline_data, mtu);
277 return false;
278 }
279
280 return true;
281 }
282
set_rc_inl(struct hns_roce_qp * qp,const struct ib_send_wr * wr,struct hns_roce_v2_rc_send_wqe * rc_sq_wqe,unsigned int * sge_idx)283 static int set_rc_inl(struct hns_roce_qp *qp, const struct ib_send_wr *wr,
284 struct hns_roce_v2_rc_send_wqe *rc_sq_wqe,
285 unsigned int *sge_idx)
286 {
287 struct hns_roce_dev *hr_dev = to_hr_dev(qp->ibqp.device);
288 u32 msg_len = le32_to_cpu(rc_sq_wqe->msg_len);
289 struct ib_device *ibdev = &hr_dev->ib_dev;
290 unsigned int curr_idx = *sge_idx;
291 void *dseg = rc_sq_wqe;
292 unsigned int i;
293 int ret;
294
295 if (unlikely(wr->opcode == IB_WR_RDMA_READ)) {
296 ibdev_err(ibdev, "invalid inline parameters!\n");
297 return -EINVAL;
298 }
299
300 if (!check_inl_data_len(qp, msg_len))
301 return -EINVAL;
302
303 dseg += sizeof(struct hns_roce_v2_rc_send_wqe);
304
305 if (msg_len <= HNS_ROCE_V2_MAX_RC_INL_INN_SZ) {
306 hr_reg_clear(rc_sq_wqe, RC_SEND_WQE_INL_TYPE);
307
308 for (i = 0; i < wr->num_sge; i++) {
309 memcpy(dseg, ((void *)wr->sg_list[i].addr),
310 wr->sg_list[i].length);
311 dseg += wr->sg_list[i].length;
312 }
313 } else {
314 hr_reg_enable(rc_sq_wqe, RC_SEND_WQE_INL_TYPE);
315
316 ret = fill_ext_sge_inl_data(qp, wr, &curr_idx, msg_len);
317 if (ret)
318 return ret;
319
320 hr_reg_write(rc_sq_wqe, RC_SEND_WQE_SGE_NUM, curr_idx - *sge_idx);
321 }
322
323 *sge_idx = curr_idx;
324
325 return 0;
326 }
327
set_rwqe_data_seg(struct ib_qp * ibqp,const struct ib_send_wr * wr,struct hns_roce_v2_rc_send_wqe * rc_sq_wqe,unsigned int * sge_ind,unsigned int valid_num_sge)328 static int set_rwqe_data_seg(struct ib_qp *ibqp, const struct ib_send_wr *wr,
329 struct hns_roce_v2_rc_send_wqe *rc_sq_wqe,
330 unsigned int *sge_ind,
331 unsigned int valid_num_sge)
332 {
333 struct hns_roce_v2_wqe_data_seg *dseg =
334 (void *)rc_sq_wqe + sizeof(struct hns_roce_v2_rc_send_wqe);
335 struct hns_roce_qp *qp = to_hr_qp(ibqp);
336 int j = 0;
337 int i;
338
339 hr_reg_write(rc_sq_wqe, RC_SEND_WQE_MSG_START_SGE_IDX,
340 (*sge_ind) & (qp->sge.sge_cnt - 1));
341
342 hr_reg_write(rc_sq_wqe, RC_SEND_WQE_INLINE,
343 !!(wr->send_flags & IB_SEND_INLINE));
344 if (wr->send_flags & IB_SEND_INLINE)
345 return set_rc_inl(qp, wr, rc_sq_wqe, sge_ind);
346
347 if (valid_num_sge <= HNS_ROCE_SGE_IN_WQE) {
348 for (i = 0; i < wr->num_sge; i++) {
349 if (likely(wr->sg_list[i].length)) {
350 set_data_seg_v2(dseg, wr->sg_list + i);
351 dseg++;
352 }
353 }
354 } else {
355 for (i = 0; i < wr->num_sge && j < HNS_ROCE_SGE_IN_WQE; i++) {
356 if (likely(wr->sg_list[i].length)) {
357 set_data_seg_v2(dseg, wr->sg_list + i);
358 dseg++;
359 j++;
360 }
361 }
362
363 set_extend_sge(qp, wr->sg_list + i, sge_ind,
364 valid_num_sge - HNS_ROCE_SGE_IN_WQE);
365 }
366
367 hr_reg_write(rc_sq_wqe, RC_SEND_WQE_SGE_NUM, valid_num_sge);
368
369 return 0;
370 }
371
check_send_valid(struct hns_roce_dev * hr_dev,struct hns_roce_qp * hr_qp)372 static int check_send_valid(struct hns_roce_dev *hr_dev,
373 struct hns_roce_qp *hr_qp)
374 {
375 struct ib_device *ibdev = &hr_dev->ib_dev;
376
377 if (unlikely(hr_qp->state == IB_QPS_RESET ||
378 hr_qp->state == IB_QPS_INIT ||
379 hr_qp->state == IB_QPS_RTR)) {
380 ibdev_err(ibdev, "failed to post WQE, QP state %u!\n",
381 hr_qp->state);
382 return -EINVAL;
383 } else if (unlikely(hr_dev->state >= HNS_ROCE_DEVICE_STATE_RST_DOWN)) {
384 ibdev_err(ibdev, "failed to post WQE, dev state %d!\n",
385 hr_dev->state);
386 return -EIO;
387 }
388
389 return 0;
390 }
391
calc_wr_sge_num(const struct ib_send_wr * wr,unsigned int * sge_len)392 static unsigned int calc_wr_sge_num(const struct ib_send_wr *wr,
393 unsigned int *sge_len)
394 {
395 unsigned int valid_num = 0;
396 unsigned int len = 0;
397 int i;
398
399 for (i = 0; i < wr->num_sge; i++) {
400 if (likely(wr->sg_list[i].length)) {
401 len += wr->sg_list[i].length;
402 valid_num++;
403 }
404 }
405
406 *sge_len = len;
407 return valid_num;
408 }
409
get_immtdata(const struct ib_send_wr * wr)410 static __le32 get_immtdata(const struct ib_send_wr *wr)
411 {
412 switch (wr->opcode) {
413 case IB_WR_SEND_WITH_IMM:
414 case IB_WR_RDMA_WRITE_WITH_IMM:
415 return cpu_to_le32(be32_to_cpu(wr->ex.imm_data));
416 default:
417 return 0;
418 }
419 }
420
set_ud_opcode(struct hns_roce_v2_ud_send_wqe * ud_sq_wqe,const struct ib_send_wr * wr)421 static int set_ud_opcode(struct hns_roce_v2_ud_send_wqe *ud_sq_wqe,
422 const struct ib_send_wr *wr)
423 {
424 u32 ib_op = wr->opcode;
425
426 if (ib_op != IB_WR_SEND && ib_op != IB_WR_SEND_WITH_IMM)
427 return -EINVAL;
428
429 ud_sq_wqe->immtdata = get_immtdata(wr);
430
431 hr_reg_write(ud_sq_wqe, UD_SEND_WQE_OPCODE, to_hr_opcode(ib_op));
432
433 return 0;
434 }
435
fill_ud_av(struct hns_roce_v2_ud_send_wqe * ud_sq_wqe,struct hns_roce_ah * ah)436 static int fill_ud_av(struct hns_roce_v2_ud_send_wqe *ud_sq_wqe,
437 struct hns_roce_ah *ah)
438 {
439 struct ib_device *ib_dev = ah->ibah.device;
440 struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev);
441
442 hr_reg_write(ud_sq_wqe, UD_SEND_WQE_UDPSPN, ah->av.udp_sport);
443 hr_reg_write(ud_sq_wqe, UD_SEND_WQE_HOPLIMIT, ah->av.hop_limit);
444 hr_reg_write(ud_sq_wqe, UD_SEND_WQE_TCLASS, ah->av.tclass);
445 hr_reg_write(ud_sq_wqe, UD_SEND_WQE_FLOW_LABEL, ah->av.flowlabel);
446
447 if (WARN_ON(ah->av.sl > MAX_SERVICE_LEVEL))
448 return -EINVAL;
449
450 hr_reg_write(ud_sq_wqe, UD_SEND_WQE_SL, ah->av.sl);
451
452 ud_sq_wqe->sgid_index = ah->av.gid_index;
453
454 memcpy(ud_sq_wqe->dmac, ah->av.mac, ETH_ALEN);
455 memcpy(ud_sq_wqe->dgid, ah->av.dgid, GID_LEN_V2);
456
457 if (hr_dev->pci_dev->revision >= PCI_REVISION_ID_HIP09)
458 return 0;
459
460 hr_reg_write(ud_sq_wqe, UD_SEND_WQE_VLAN_EN, ah->av.vlan_en);
461 hr_reg_write(ud_sq_wqe, UD_SEND_WQE_VLAN, ah->av.vlan_id);
462
463 return 0;
464 }
465
set_ud_wqe(struct hns_roce_qp * qp,const struct ib_send_wr * wr,void * wqe,unsigned int * sge_idx,unsigned int owner_bit)466 static inline int set_ud_wqe(struct hns_roce_qp *qp,
467 const struct ib_send_wr *wr,
468 void *wqe, unsigned int *sge_idx,
469 unsigned int owner_bit)
470 {
471 struct hns_roce_ah *ah = to_hr_ah(ud_wr(wr)->ah);
472 struct hns_roce_v2_ud_send_wqe *ud_sq_wqe = wqe;
473 unsigned int curr_idx = *sge_idx;
474 unsigned int valid_num_sge;
475 u32 msg_len = 0;
476 int ret;
477
478 valid_num_sge = calc_wr_sge_num(wr, &msg_len);
479
480 ret = set_ud_opcode(ud_sq_wqe, wr);
481 if (WARN_ON(ret))
482 return ret;
483
484 ud_sq_wqe->msg_len = cpu_to_le32(msg_len);
485
486 hr_reg_write(ud_sq_wqe, UD_SEND_WQE_CQE,
487 !!(wr->send_flags & IB_SEND_SIGNALED));
488 hr_reg_write(ud_sq_wqe, UD_SEND_WQE_SE,
489 !!(wr->send_flags & IB_SEND_SOLICITED));
490
491 hr_reg_write(ud_sq_wqe, UD_SEND_WQE_PD, to_hr_pd(qp->ibqp.pd)->pdn);
492 hr_reg_write(ud_sq_wqe, UD_SEND_WQE_SGE_NUM, valid_num_sge);
493 hr_reg_write(ud_sq_wqe, UD_SEND_WQE_MSG_START_SGE_IDX,
494 curr_idx & (qp->sge.sge_cnt - 1));
495
496 ud_sq_wqe->qkey = cpu_to_le32(ud_wr(wr)->remote_qkey & 0x80000000 ?
497 qp->qkey : ud_wr(wr)->remote_qkey);
498 hr_reg_write(ud_sq_wqe, UD_SEND_WQE_DQPN, ud_wr(wr)->remote_qpn);
499
500 ret = fill_ud_av(ud_sq_wqe, ah);
501 if (ret)
502 return ret;
503
504 qp->sl = to_hr_ah(ud_wr(wr)->ah)->av.sl;
505
506 set_extend_sge(qp, wr->sg_list, &curr_idx, valid_num_sge);
507
508 /*
509 * The pipeline can sequentially post all valid WQEs into WQ buffer,
510 * including new WQEs waiting for the doorbell to update the PI again.
511 * Therefore, the owner bit of WQE MUST be updated after all fields
512 * and extSGEs have been written into DDR instead of cache.
513 */
514 if (qp->en_flags & HNS_ROCE_QP_CAP_OWNER_DB)
515 dma_wmb();
516
517 *sge_idx = curr_idx;
518 hr_reg_write(ud_sq_wqe, UD_SEND_WQE_OWNER, owner_bit);
519
520 return 0;
521 }
522
set_rc_opcode(struct hns_roce_dev * hr_dev,struct hns_roce_v2_rc_send_wqe * rc_sq_wqe,const struct ib_send_wr * wr)523 static int set_rc_opcode(struct hns_roce_dev *hr_dev,
524 struct hns_roce_v2_rc_send_wqe *rc_sq_wqe,
525 const struct ib_send_wr *wr)
526 {
527 u32 ib_op = wr->opcode;
528 int ret = 0;
529
530 rc_sq_wqe->immtdata = get_immtdata(wr);
531
532 switch (ib_op) {
533 case IB_WR_RDMA_READ:
534 case IB_WR_RDMA_WRITE:
535 case IB_WR_RDMA_WRITE_WITH_IMM:
536 rc_sq_wqe->rkey = cpu_to_le32(rdma_wr(wr)->rkey);
537 rc_sq_wqe->va = cpu_to_le64(rdma_wr(wr)->remote_addr);
538 break;
539 case IB_WR_SEND:
540 case IB_WR_SEND_WITH_IMM:
541 break;
542 case IB_WR_ATOMIC_CMP_AND_SWP:
543 case IB_WR_ATOMIC_FETCH_AND_ADD:
544 rc_sq_wqe->rkey = cpu_to_le32(atomic_wr(wr)->rkey);
545 rc_sq_wqe->va = cpu_to_le64(atomic_wr(wr)->remote_addr);
546 break;
547 case IB_WR_REG_MR:
548 if (hr_dev->pci_dev->revision >= PCI_REVISION_ID_HIP09)
549 set_frmr_seg(rc_sq_wqe, reg_wr(wr));
550 else
551 ret = -EOPNOTSUPP;
552 break;
553 case IB_WR_SEND_WITH_INV:
554 rc_sq_wqe->inv_key = cpu_to_le32(wr->ex.invalidate_rkey);
555 break;
556 default:
557 ret = -EINVAL;
558 }
559
560 if (unlikely(ret))
561 return ret;
562
563 hr_reg_write(rc_sq_wqe, RC_SEND_WQE_OPCODE, to_hr_opcode(ib_op));
564
565 return ret;
566 }
567
set_rc_wqe(struct hns_roce_qp * qp,const struct ib_send_wr * wr,void * wqe,unsigned int * sge_idx,unsigned int owner_bit)568 static inline int set_rc_wqe(struct hns_roce_qp *qp,
569 const struct ib_send_wr *wr,
570 void *wqe, unsigned int *sge_idx,
571 unsigned int owner_bit)
572 {
573 struct hns_roce_dev *hr_dev = to_hr_dev(qp->ibqp.device);
574 struct hns_roce_v2_rc_send_wqe *rc_sq_wqe = wqe;
575 unsigned int curr_idx = *sge_idx;
576 unsigned int valid_num_sge;
577 u32 msg_len = 0;
578 int ret;
579
580 valid_num_sge = calc_wr_sge_num(wr, &msg_len);
581
582 rc_sq_wqe->msg_len = cpu_to_le32(msg_len);
583
584 ret = set_rc_opcode(hr_dev, rc_sq_wqe, wr);
585 if (WARN_ON(ret))
586 return ret;
587
588 hr_reg_write(rc_sq_wqe, RC_SEND_WQE_FENCE,
589 (wr->send_flags & IB_SEND_FENCE) ? 1 : 0);
590
591 hr_reg_write(rc_sq_wqe, RC_SEND_WQE_SE,
592 (wr->send_flags & IB_SEND_SOLICITED) ? 1 : 0);
593
594 hr_reg_write(rc_sq_wqe, RC_SEND_WQE_CQE,
595 (wr->send_flags & IB_SEND_SIGNALED) ? 1 : 0);
596
597 if (wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP ||
598 wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD)
599 set_atomic_seg(wr, rc_sq_wqe, valid_num_sge);
600 else if (wr->opcode != IB_WR_REG_MR)
601 ret = set_rwqe_data_seg(&qp->ibqp, wr, rc_sq_wqe,
602 &curr_idx, valid_num_sge);
603
604 /*
605 * The pipeline can sequentially post all valid WQEs into WQ buffer,
606 * including new WQEs waiting for the doorbell to update the PI again.
607 * Therefore, the owner bit of WQE MUST be updated after all fields
608 * and extSGEs have been written into DDR instead of cache.
609 */
610 if (qp->en_flags & HNS_ROCE_QP_CAP_OWNER_DB)
611 dma_wmb();
612
613 *sge_idx = curr_idx;
614 hr_reg_write(rc_sq_wqe, RC_SEND_WQE_OWNER, owner_bit);
615
616 return ret;
617 }
618
update_sq_db(struct hns_roce_dev * hr_dev,struct hns_roce_qp * qp)619 static inline void update_sq_db(struct hns_roce_dev *hr_dev,
620 struct hns_roce_qp *qp)
621 {
622 if (unlikely(qp->state == IB_QPS_ERR)) {
623 flush_cqe(hr_dev, qp);
624 } else {
625 struct hns_roce_v2_db sq_db = {};
626
627 hr_reg_write(&sq_db, DB_TAG, qp->qpn);
628 hr_reg_write(&sq_db, DB_CMD, HNS_ROCE_V2_SQ_DB);
629 hr_reg_write(&sq_db, DB_PI, qp->sq.head);
630 hr_reg_write(&sq_db, DB_SL, qp->sl);
631
632 hns_roce_write64(hr_dev, (__le32 *)&sq_db, qp->sq.db_reg);
633 }
634 }
635
update_rq_db(struct hns_roce_dev * hr_dev,struct hns_roce_qp * qp)636 static inline void update_rq_db(struct hns_roce_dev *hr_dev,
637 struct hns_roce_qp *qp)
638 {
639 if (unlikely(qp->state == IB_QPS_ERR)) {
640 flush_cqe(hr_dev, qp);
641 } else {
642 if (likely(qp->en_flags & HNS_ROCE_QP_CAP_RQ_RECORD_DB)) {
643 *qp->rdb.db_record =
644 qp->rq.head & V2_DB_PRODUCER_IDX_M;
645 } else {
646 struct hns_roce_v2_db rq_db = {};
647
648 hr_reg_write(&rq_db, DB_TAG, qp->qpn);
649 hr_reg_write(&rq_db, DB_CMD, HNS_ROCE_V2_RQ_DB);
650 hr_reg_write(&rq_db, DB_PI, qp->rq.head);
651
652 hns_roce_write64(hr_dev, (__le32 *)&rq_db,
653 qp->rq.db_reg);
654 }
655 }
656 }
657
hns_roce_write512(struct hns_roce_dev * hr_dev,u64 * val,u64 __iomem * dest)658 static void hns_roce_write512(struct hns_roce_dev *hr_dev, u64 *val,
659 u64 __iomem *dest)
660 {
661 #define HNS_ROCE_WRITE_TIMES 8
662 struct hns_roce_v2_priv *priv = (struct hns_roce_v2_priv *)hr_dev->priv;
663 struct hnae3_handle *handle = priv->handle;
664 const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
665 int i;
666
667 if (!hr_dev->dis_db && !ops->get_hw_reset_stat(handle))
668 for (i = 0; i < HNS_ROCE_WRITE_TIMES; i++)
669 writeq_relaxed(*(val + i), dest + i);
670 }
671
write_dwqe(struct hns_roce_dev * hr_dev,struct hns_roce_qp * qp,void * wqe)672 static void write_dwqe(struct hns_roce_dev *hr_dev, struct hns_roce_qp *qp,
673 void *wqe)
674 {
675 #define HNS_ROCE_SL_SHIFT 2
676 struct hns_roce_v2_rc_send_wqe *rc_sq_wqe = wqe;
677
678 /* All kinds of DirectWQE have the same header field layout */
679 hr_reg_enable(rc_sq_wqe, RC_SEND_WQE_FLAG);
680 hr_reg_write(rc_sq_wqe, RC_SEND_WQE_DB_SL_L, qp->sl);
681 hr_reg_write(rc_sq_wqe, RC_SEND_WQE_DB_SL_H,
682 qp->sl >> HNS_ROCE_SL_SHIFT);
683 hr_reg_write(rc_sq_wqe, RC_SEND_WQE_WQE_INDEX, qp->sq.head);
684
685 hns_roce_write512(hr_dev, wqe, qp->sq.db_reg);
686 }
687
hns_roce_v2_post_send(struct ib_qp * ibqp,const struct ib_send_wr * wr,const struct ib_send_wr ** bad_wr)688 static int hns_roce_v2_post_send(struct ib_qp *ibqp,
689 const struct ib_send_wr *wr,
690 const struct ib_send_wr **bad_wr)
691 {
692 struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
693 struct ib_device *ibdev = &hr_dev->ib_dev;
694 struct hns_roce_qp *qp = to_hr_qp(ibqp);
695 unsigned long flags = 0;
696 unsigned int owner_bit;
697 unsigned int sge_idx;
698 unsigned int wqe_idx;
699 void *wqe = NULL;
700 u32 nreq;
701 int ret;
702
703 spin_lock_irqsave(&qp->sq.lock, flags);
704
705 ret = check_send_valid(hr_dev, qp);
706 if (unlikely(ret)) {
707 *bad_wr = wr;
708 nreq = 0;
709 goto out;
710 }
711
712 sge_idx = qp->next_sge;
713
714 for (nreq = 0; wr; ++nreq, wr = wr->next) {
715 if (hns_roce_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq)) {
716 ret = -ENOMEM;
717 *bad_wr = wr;
718 goto out;
719 }
720
721 wqe_idx = (qp->sq.head + nreq) & (qp->sq.wqe_cnt - 1);
722
723 if (unlikely(wr->num_sge > qp->sq.max_gs)) {
724 ibdev_err(ibdev, "num_sge = %d > qp->sq.max_gs = %u.\n",
725 wr->num_sge, qp->sq.max_gs);
726 ret = -EINVAL;
727 *bad_wr = wr;
728 goto out;
729 }
730
731 wqe = hns_roce_get_send_wqe(qp, wqe_idx);
732 qp->sq.wrid[wqe_idx] = wr->wr_id;
733 owner_bit =
734 ~(((qp->sq.head + nreq) >> ilog2(qp->sq.wqe_cnt)) & 0x1);
735
736 /* Corresponding to the QP type, wqe process separately */
737 if (ibqp->qp_type == IB_QPT_RC)
738 ret = set_rc_wqe(qp, wr, wqe, &sge_idx, owner_bit);
739 else
740 ret = set_ud_wqe(qp, wr, wqe, &sge_idx, owner_bit);
741
742 if (unlikely(ret)) {
743 *bad_wr = wr;
744 goto out;
745 }
746 }
747
748 out:
749 if (likely(nreq)) {
750 qp->sq.head += nreq;
751 qp->next_sge = sge_idx;
752
753 if (nreq == 1 && !ret &&
754 (qp->en_flags & HNS_ROCE_QP_CAP_DIRECT_WQE))
755 write_dwqe(hr_dev, qp, wqe);
756 else
757 update_sq_db(hr_dev, qp);
758 }
759
760 spin_unlock_irqrestore(&qp->sq.lock, flags);
761
762 return ret;
763 }
764
check_recv_valid(struct hns_roce_dev * hr_dev,struct hns_roce_qp * hr_qp)765 static int check_recv_valid(struct hns_roce_dev *hr_dev,
766 struct hns_roce_qp *hr_qp)
767 {
768 if (unlikely(hr_dev->state >= HNS_ROCE_DEVICE_STATE_RST_DOWN))
769 return -EIO;
770
771 if (hr_qp->state == IB_QPS_RESET)
772 return -EINVAL;
773
774 return 0;
775 }
776
fill_recv_sge_to_wqe(const struct ib_recv_wr * wr,void * wqe,u32 max_sge,bool rsv)777 static void fill_recv_sge_to_wqe(const struct ib_recv_wr *wr, void *wqe,
778 u32 max_sge, bool rsv)
779 {
780 struct hns_roce_v2_wqe_data_seg *dseg = wqe;
781 u32 i, cnt;
782
783 for (i = 0, cnt = 0; i < wr->num_sge; i++) {
784 /* Skip zero-length sge */
785 if (!wr->sg_list[i].length)
786 continue;
787 set_data_seg_v2(dseg + cnt, wr->sg_list + i);
788 cnt++;
789 }
790
791 /* Fill a reserved sge to make hw stop reading remaining segments */
792 if (rsv) {
793 dseg[cnt].lkey = cpu_to_le32(HNS_ROCE_INVALID_LKEY);
794 dseg[cnt].addr = 0;
795 dseg[cnt].len = cpu_to_le32(HNS_ROCE_INVALID_SGE_LENGTH);
796 } else {
797 /* Clear remaining segments to make ROCEE ignore sges */
798 if (cnt < max_sge)
799 memset(dseg + cnt, 0,
800 (max_sge - cnt) * HNS_ROCE_SGE_SIZE);
801 }
802 }
803
fill_rq_wqe(struct hns_roce_qp * hr_qp,const struct ib_recv_wr * wr,u32 wqe_idx,u32 max_sge)804 static void fill_rq_wqe(struct hns_roce_qp *hr_qp, const struct ib_recv_wr *wr,
805 u32 wqe_idx, u32 max_sge)
806 {
807 void *wqe = NULL;
808
809 wqe = hns_roce_get_recv_wqe(hr_qp, wqe_idx);
810 fill_recv_sge_to_wqe(wr, wqe, max_sge, hr_qp->rq.rsv_sge);
811 }
812
hns_roce_v2_post_recv(struct ib_qp * ibqp,const struct ib_recv_wr * wr,const struct ib_recv_wr ** bad_wr)813 static int hns_roce_v2_post_recv(struct ib_qp *ibqp,
814 const struct ib_recv_wr *wr,
815 const struct ib_recv_wr **bad_wr)
816 {
817 struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
818 struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
819 struct ib_device *ibdev = &hr_dev->ib_dev;
820 u32 wqe_idx, nreq, max_sge;
821 unsigned long flags;
822 int ret;
823
824 spin_lock_irqsave(&hr_qp->rq.lock, flags);
825
826 ret = check_recv_valid(hr_dev, hr_qp);
827 if (unlikely(ret)) {
828 *bad_wr = wr;
829 nreq = 0;
830 goto out;
831 }
832
833 max_sge = hr_qp->rq.max_gs - hr_qp->rq.rsv_sge;
834 for (nreq = 0; wr; ++nreq, wr = wr->next) {
835 if (unlikely(hns_roce_wq_overflow(&hr_qp->rq, nreq,
836 hr_qp->ibqp.recv_cq))) {
837 ret = -ENOMEM;
838 *bad_wr = wr;
839 goto out;
840 }
841
842 if (unlikely(wr->num_sge > max_sge)) {
843 ibdev_err(ibdev, "num_sge = %d >= max_sge = %u.\n",
844 wr->num_sge, max_sge);
845 ret = -EINVAL;
846 *bad_wr = wr;
847 goto out;
848 }
849
850 wqe_idx = (hr_qp->rq.head + nreq) & (hr_qp->rq.wqe_cnt - 1);
851 fill_rq_wqe(hr_qp, wr, wqe_idx, max_sge);
852 hr_qp->rq.wrid[wqe_idx] = wr->wr_id;
853 }
854
855 out:
856 if (likely(nreq)) {
857 hr_qp->rq.head += nreq;
858
859 update_rq_db(hr_dev, hr_qp);
860 }
861 spin_unlock_irqrestore(&hr_qp->rq.lock, flags);
862
863 return ret;
864 }
865
get_srq_wqe_buf(struct hns_roce_srq * srq,u32 n)866 static void *get_srq_wqe_buf(struct hns_roce_srq *srq, u32 n)
867 {
868 return hns_roce_buf_offset(srq->buf_mtr.kmem, n << srq->wqe_shift);
869 }
870
get_idx_buf(struct hns_roce_idx_que * idx_que,u32 n)871 static void *get_idx_buf(struct hns_roce_idx_que *idx_que, u32 n)
872 {
873 return hns_roce_buf_offset(idx_que->mtr.kmem,
874 n << idx_que->entry_shift);
875 }
876
hns_roce_free_srq_wqe(struct hns_roce_srq * srq,u32 wqe_index)877 static void hns_roce_free_srq_wqe(struct hns_roce_srq *srq, u32 wqe_index)
878 {
879 /* always called with interrupts disabled. */
880 spin_lock(&srq->lock);
881
882 bitmap_clear(srq->idx_que.bitmap, wqe_index, 1);
883 srq->idx_que.tail++;
884
885 spin_unlock(&srq->lock);
886 }
887
hns_roce_srqwq_overflow(struct hns_roce_srq * srq)888 static int hns_roce_srqwq_overflow(struct hns_roce_srq *srq)
889 {
890 struct hns_roce_idx_que *idx_que = &srq->idx_que;
891
892 return idx_que->head - idx_que->tail >= srq->wqe_cnt;
893 }
894
check_post_srq_valid(struct hns_roce_srq * srq,u32 max_sge,const struct ib_recv_wr * wr)895 static int check_post_srq_valid(struct hns_roce_srq *srq, u32 max_sge,
896 const struct ib_recv_wr *wr)
897 {
898 struct ib_device *ib_dev = srq->ibsrq.device;
899
900 if (unlikely(wr->num_sge > max_sge)) {
901 ibdev_err(ib_dev,
902 "failed to check sge, wr->num_sge = %d, max_sge = %u.\n",
903 wr->num_sge, max_sge);
904 return -EINVAL;
905 }
906
907 if (unlikely(hns_roce_srqwq_overflow(srq))) {
908 ibdev_err(ib_dev,
909 "failed to check srqwq status, srqwq is full.\n");
910 return -ENOMEM;
911 }
912
913 return 0;
914 }
915
get_srq_wqe_idx(struct hns_roce_srq * srq,u32 * wqe_idx)916 static int get_srq_wqe_idx(struct hns_roce_srq *srq, u32 *wqe_idx)
917 {
918 struct hns_roce_idx_que *idx_que = &srq->idx_que;
919 u32 pos;
920
921 pos = find_first_zero_bit(idx_que->bitmap, srq->wqe_cnt);
922 if (unlikely(pos == srq->wqe_cnt))
923 return -ENOSPC;
924
925 bitmap_set(idx_que->bitmap, pos, 1);
926 *wqe_idx = pos;
927 return 0;
928 }
929
fill_wqe_idx(struct hns_roce_srq * srq,unsigned int wqe_idx)930 static void fill_wqe_idx(struct hns_roce_srq *srq, unsigned int wqe_idx)
931 {
932 struct hns_roce_idx_que *idx_que = &srq->idx_que;
933 unsigned int head;
934 __le32 *buf;
935
936 head = idx_que->head & (srq->wqe_cnt - 1);
937
938 buf = get_idx_buf(idx_que, head);
939 *buf = cpu_to_le32(wqe_idx);
940
941 idx_que->head++;
942 }
943
update_srq_db(struct hns_roce_v2_db * db,struct hns_roce_srq * srq)944 static void update_srq_db(struct hns_roce_v2_db *db, struct hns_roce_srq *srq)
945 {
946 hr_reg_write(db, DB_TAG, srq->srqn);
947 hr_reg_write(db, DB_CMD, HNS_ROCE_V2_SRQ_DB);
948 hr_reg_write(db, DB_PI, srq->idx_que.head);
949 }
950
hns_roce_v2_post_srq_recv(struct ib_srq * ibsrq,const struct ib_recv_wr * wr,const struct ib_recv_wr ** bad_wr)951 static int hns_roce_v2_post_srq_recv(struct ib_srq *ibsrq,
952 const struct ib_recv_wr *wr,
953 const struct ib_recv_wr **bad_wr)
954 {
955 struct hns_roce_dev *hr_dev = to_hr_dev(ibsrq->device);
956 struct hns_roce_srq *srq = to_hr_srq(ibsrq);
957 struct hns_roce_v2_db srq_db;
958 unsigned long flags;
959 int ret = 0;
960 u32 max_sge;
961 u32 wqe_idx;
962 void *wqe;
963 u32 nreq;
964
965 spin_lock_irqsave(&srq->lock, flags);
966
967 max_sge = srq->max_gs - srq->rsv_sge;
968 for (nreq = 0; wr; ++nreq, wr = wr->next) {
969 ret = check_post_srq_valid(srq, max_sge, wr);
970 if (ret) {
971 *bad_wr = wr;
972 break;
973 }
974
975 ret = get_srq_wqe_idx(srq, &wqe_idx);
976 if (unlikely(ret)) {
977 *bad_wr = wr;
978 break;
979 }
980
981 wqe = get_srq_wqe_buf(srq, wqe_idx);
982 fill_recv_sge_to_wqe(wr, wqe, max_sge, srq->rsv_sge);
983 fill_wqe_idx(srq, wqe_idx);
984 srq->wrid[wqe_idx] = wr->wr_id;
985 }
986
987 if (likely(nreq)) {
988 update_srq_db(&srq_db, srq);
989
990 hns_roce_write64(hr_dev, (__le32 *)&srq_db, srq->db_reg);
991 }
992
993 spin_unlock_irqrestore(&srq->lock, flags);
994
995 return ret;
996 }
997
hns_roce_v2_cmd_hw_reseted(struct hns_roce_dev * hr_dev,unsigned long instance_stage,unsigned long reset_stage)998 static u32 hns_roce_v2_cmd_hw_reseted(struct hns_roce_dev *hr_dev,
999 unsigned long instance_stage,
1000 unsigned long reset_stage)
1001 {
1002 /* When hardware reset has been completed once or more, we should stop
1003 * sending mailbox&cmq&doorbell to hardware. If now in .init_instance()
1004 * function, we should exit with error. If now at HNAE3_INIT_CLIENT
1005 * stage of soft reset process, we should exit with error, and then
1006 * HNAE3_INIT_CLIENT related process can rollback the operation like
1007 * notifing hardware to free resources, HNAE3_INIT_CLIENT related
1008 * process will exit with error to notify NIC driver to reschedule soft
1009 * reset process once again.
1010 */
1011 hr_dev->is_reset = true;
1012 hr_dev->dis_db = true;
1013
1014 if (reset_stage == HNS_ROCE_STATE_RST_INIT ||
1015 instance_stage == HNS_ROCE_STATE_INIT)
1016 return CMD_RST_PRC_EBUSY;
1017
1018 return CMD_RST_PRC_SUCCESS;
1019 }
1020
hns_roce_v2_cmd_hw_resetting(struct hns_roce_dev * hr_dev,unsigned long instance_stage,unsigned long reset_stage)1021 static u32 hns_roce_v2_cmd_hw_resetting(struct hns_roce_dev *hr_dev,
1022 unsigned long instance_stage,
1023 unsigned long reset_stage)
1024 {
1025 #define HW_RESET_TIMEOUT_US 1000000
1026 #define HW_RESET_SLEEP_US 1000
1027
1028 struct hns_roce_v2_priv *priv = hr_dev->priv;
1029 struct hnae3_handle *handle = priv->handle;
1030 const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
1031 unsigned long val;
1032 int ret;
1033
1034 /* When hardware reset is detected, we should stop sending mailbox&cmq&
1035 * doorbell to hardware. If now in .init_instance() function, we should
1036 * exit with error. If now at HNAE3_INIT_CLIENT stage of soft reset
1037 * process, we should exit with error, and then HNAE3_INIT_CLIENT
1038 * related process can rollback the operation like notifing hardware to
1039 * free resources, HNAE3_INIT_CLIENT related process will exit with
1040 * error to notify NIC driver to reschedule soft reset process once
1041 * again.
1042 */
1043 hr_dev->dis_db = true;
1044
1045 ret = read_poll_timeout(ops->ae_dev_reset_cnt, val,
1046 val > hr_dev->reset_cnt, HW_RESET_SLEEP_US,
1047 HW_RESET_TIMEOUT_US, false, handle);
1048 if (!ret)
1049 hr_dev->is_reset = true;
1050
1051 if (!hr_dev->is_reset || reset_stage == HNS_ROCE_STATE_RST_INIT ||
1052 instance_stage == HNS_ROCE_STATE_INIT)
1053 return CMD_RST_PRC_EBUSY;
1054
1055 return CMD_RST_PRC_SUCCESS;
1056 }
1057
hns_roce_v2_cmd_sw_resetting(struct hns_roce_dev * hr_dev)1058 static u32 hns_roce_v2_cmd_sw_resetting(struct hns_roce_dev *hr_dev)
1059 {
1060 struct hns_roce_v2_priv *priv = hr_dev->priv;
1061 struct hnae3_handle *handle = priv->handle;
1062 const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
1063
1064 /* When software reset is detected at .init_instance() function, we
1065 * should stop sending mailbox&cmq&doorbell to hardware, and exit
1066 * with error.
1067 */
1068 hr_dev->dis_db = true;
1069 if (ops->ae_dev_reset_cnt(handle) != hr_dev->reset_cnt)
1070 hr_dev->is_reset = true;
1071
1072 return CMD_RST_PRC_EBUSY;
1073 }
1074
check_aedev_reset_status(struct hns_roce_dev * hr_dev,struct hnae3_handle * handle)1075 static u32 check_aedev_reset_status(struct hns_roce_dev *hr_dev,
1076 struct hnae3_handle *handle)
1077 {
1078 const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
1079 unsigned long instance_stage; /* the current instance stage */
1080 unsigned long reset_stage; /* the current reset stage */
1081 unsigned long reset_cnt;
1082 bool sw_resetting;
1083 bool hw_resetting;
1084
1085 /* Get information about reset from NIC driver or RoCE driver itself,
1086 * the meaning of the following variables from NIC driver are described
1087 * as below:
1088 * reset_cnt -- The count value of completed hardware reset.
1089 * hw_resetting -- Whether hardware device is resetting now.
1090 * sw_resetting -- Whether NIC's software reset process is running now.
1091 */
1092 instance_stage = handle->rinfo.instance_state;
1093 reset_stage = handle->rinfo.reset_state;
1094 reset_cnt = ops->ae_dev_reset_cnt(handle);
1095 if (reset_cnt != hr_dev->reset_cnt)
1096 return hns_roce_v2_cmd_hw_reseted(hr_dev, instance_stage,
1097 reset_stage);
1098
1099 hw_resetting = ops->get_cmdq_stat(handle);
1100 if (hw_resetting)
1101 return hns_roce_v2_cmd_hw_resetting(hr_dev, instance_stage,
1102 reset_stage);
1103
1104 sw_resetting = ops->ae_dev_resetting(handle);
1105 if (sw_resetting && instance_stage == HNS_ROCE_STATE_INIT)
1106 return hns_roce_v2_cmd_sw_resetting(hr_dev);
1107
1108 return CMD_RST_PRC_OTHERS;
1109 }
1110
check_device_is_in_reset(struct hns_roce_dev * hr_dev)1111 static bool check_device_is_in_reset(struct hns_roce_dev *hr_dev)
1112 {
1113 struct hns_roce_v2_priv *priv = hr_dev->priv;
1114 struct hnae3_handle *handle = priv->handle;
1115 const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
1116
1117 if (hr_dev->reset_cnt != ops->ae_dev_reset_cnt(handle))
1118 return true;
1119
1120 if (ops->get_hw_reset_stat(handle))
1121 return true;
1122
1123 if (ops->ae_dev_resetting(handle))
1124 return true;
1125
1126 return false;
1127 }
1128
v2_chk_mbox_is_avail(struct hns_roce_dev * hr_dev,bool * busy)1129 static bool v2_chk_mbox_is_avail(struct hns_roce_dev *hr_dev, bool *busy)
1130 {
1131 struct hns_roce_v2_priv *priv = hr_dev->priv;
1132 u32 status;
1133
1134 if (hr_dev->is_reset)
1135 status = CMD_RST_PRC_SUCCESS;
1136 else
1137 status = check_aedev_reset_status(hr_dev, priv->handle);
1138
1139 *busy = (status == CMD_RST_PRC_EBUSY);
1140
1141 return status == CMD_RST_PRC_OTHERS;
1142 }
1143
hns_roce_alloc_cmq_desc(struct hns_roce_dev * hr_dev,struct hns_roce_v2_cmq_ring * ring)1144 static int hns_roce_alloc_cmq_desc(struct hns_roce_dev *hr_dev,
1145 struct hns_roce_v2_cmq_ring *ring)
1146 {
1147 int size = ring->desc_num * sizeof(struct hns_roce_cmq_desc);
1148
1149 ring->desc = dma_alloc_coherent(hr_dev->dev, size,
1150 &ring->desc_dma_addr, GFP_KERNEL);
1151 if (!ring->desc)
1152 return -ENOMEM;
1153
1154 return 0;
1155 }
1156
hns_roce_free_cmq_desc(struct hns_roce_dev * hr_dev,struct hns_roce_v2_cmq_ring * ring)1157 static void hns_roce_free_cmq_desc(struct hns_roce_dev *hr_dev,
1158 struct hns_roce_v2_cmq_ring *ring)
1159 {
1160 dma_free_coherent(hr_dev->dev,
1161 ring->desc_num * sizeof(struct hns_roce_cmq_desc),
1162 ring->desc, ring->desc_dma_addr);
1163
1164 ring->desc_dma_addr = 0;
1165 }
1166
init_csq(struct hns_roce_dev * hr_dev,struct hns_roce_v2_cmq_ring * csq)1167 static int init_csq(struct hns_roce_dev *hr_dev,
1168 struct hns_roce_v2_cmq_ring *csq)
1169 {
1170 dma_addr_t dma;
1171 int ret;
1172
1173 csq->desc_num = CMD_CSQ_DESC_NUM;
1174 spin_lock_init(&csq->lock);
1175 csq->flag = TYPE_CSQ;
1176 csq->head = 0;
1177
1178 ret = hns_roce_alloc_cmq_desc(hr_dev, csq);
1179 if (ret)
1180 return ret;
1181
1182 dma = csq->desc_dma_addr;
1183 roce_write(hr_dev, ROCEE_TX_CMQ_BASEADDR_L_REG, lower_32_bits(dma));
1184 roce_write(hr_dev, ROCEE_TX_CMQ_BASEADDR_H_REG, upper_32_bits(dma));
1185 roce_write(hr_dev, ROCEE_TX_CMQ_DEPTH_REG,
1186 (u32)csq->desc_num >> HNS_ROCE_CMQ_DESC_NUM_S);
1187
1188 /* Make sure to write CI first and then PI */
1189 roce_write(hr_dev, ROCEE_TX_CMQ_CI_REG, 0);
1190 roce_write(hr_dev, ROCEE_TX_CMQ_PI_REG, 0);
1191
1192 return 0;
1193 }
1194
hns_roce_v2_cmq_init(struct hns_roce_dev * hr_dev)1195 static int hns_roce_v2_cmq_init(struct hns_roce_dev *hr_dev)
1196 {
1197 struct hns_roce_v2_priv *priv = hr_dev->priv;
1198 int ret;
1199
1200 priv->cmq.tx_timeout = HNS_ROCE_CMQ_TX_TIMEOUT;
1201
1202 ret = init_csq(hr_dev, &priv->cmq.csq);
1203 if (ret)
1204 dev_err(hr_dev->dev, "failed to init CSQ, ret = %d.\n", ret);
1205
1206 return ret;
1207 }
1208
hns_roce_v2_cmq_exit(struct hns_roce_dev * hr_dev)1209 static void hns_roce_v2_cmq_exit(struct hns_roce_dev *hr_dev)
1210 {
1211 struct hns_roce_v2_priv *priv = hr_dev->priv;
1212
1213 hns_roce_free_cmq_desc(hr_dev, &priv->cmq.csq);
1214 }
1215
hns_roce_cmq_setup_basic_desc(struct hns_roce_cmq_desc * desc,enum hns_roce_opcode_type opcode,bool is_read)1216 static void hns_roce_cmq_setup_basic_desc(struct hns_roce_cmq_desc *desc,
1217 enum hns_roce_opcode_type opcode,
1218 bool is_read)
1219 {
1220 memset((void *)desc, 0, sizeof(struct hns_roce_cmq_desc));
1221 desc->opcode = cpu_to_le16(opcode);
1222 desc->flag = cpu_to_le16(HNS_ROCE_CMD_FLAG_IN);
1223 if (is_read)
1224 desc->flag |= cpu_to_le16(HNS_ROCE_CMD_FLAG_WR);
1225 else
1226 desc->flag &= cpu_to_le16(~HNS_ROCE_CMD_FLAG_WR);
1227 }
1228
hns_roce_cmq_csq_done(struct hns_roce_dev * hr_dev)1229 static int hns_roce_cmq_csq_done(struct hns_roce_dev *hr_dev)
1230 {
1231 u32 tail = roce_read(hr_dev, ROCEE_TX_CMQ_CI_REG);
1232 struct hns_roce_v2_priv *priv = hr_dev->priv;
1233
1234 return tail == priv->cmq.csq.head;
1235 }
1236
update_cmdq_status(struct hns_roce_dev * hr_dev)1237 static void update_cmdq_status(struct hns_roce_dev *hr_dev)
1238 {
1239 struct hns_roce_v2_priv *priv = hr_dev->priv;
1240 struct hnae3_handle *handle = priv->handle;
1241
1242 if (handle->rinfo.reset_state == HNS_ROCE_STATE_RST_INIT ||
1243 handle->rinfo.instance_state == HNS_ROCE_STATE_INIT)
1244 hr_dev->cmd.state = HNS_ROCE_CMDQ_STATE_FATAL_ERR;
1245 }
1246
hns_roce_cmd_err_convert_errno(u16 desc_ret)1247 static int hns_roce_cmd_err_convert_errno(u16 desc_ret)
1248 {
1249 struct hns_roce_cmd_errcode errcode_table[] = {
1250 {CMD_EXEC_SUCCESS, 0},
1251 {CMD_NO_AUTH, -EPERM},
1252 {CMD_NOT_EXIST, -EOPNOTSUPP},
1253 {CMD_CRQ_FULL, -EXFULL},
1254 {CMD_NEXT_ERR, -ENOSR},
1255 {CMD_NOT_EXEC, -ENOTBLK},
1256 {CMD_PARA_ERR, -EINVAL},
1257 {CMD_RESULT_ERR, -ERANGE},
1258 {CMD_TIMEOUT, -ETIME},
1259 {CMD_HILINK_ERR, -ENOLINK},
1260 {CMD_INFO_ILLEGAL, -ENXIO},
1261 {CMD_INVALID, -EBADR},
1262 };
1263 u16 i;
1264
1265 for (i = 0; i < ARRAY_SIZE(errcode_table); i++)
1266 if (desc_ret == errcode_table[i].return_status)
1267 return errcode_table[i].errno;
1268 return -EIO;
1269 }
1270
__hns_roce_cmq_send(struct hns_roce_dev * hr_dev,struct hns_roce_cmq_desc * desc,int num)1271 static int __hns_roce_cmq_send(struct hns_roce_dev *hr_dev,
1272 struct hns_roce_cmq_desc *desc, int num)
1273 {
1274 struct hns_roce_v2_priv *priv = hr_dev->priv;
1275 struct hns_roce_v2_cmq_ring *csq = &priv->cmq.csq;
1276 u32 timeout = 0;
1277 u16 desc_ret;
1278 u32 tail;
1279 int ret;
1280 int i;
1281
1282 spin_lock_bh(&csq->lock);
1283
1284 tail = csq->head;
1285
1286 for (i = 0; i < num; i++) {
1287 csq->desc[csq->head++] = desc[i];
1288 if (csq->head == csq->desc_num)
1289 csq->head = 0;
1290 }
1291
1292 /* Write to hardware */
1293 roce_write(hr_dev, ROCEE_TX_CMQ_PI_REG, csq->head);
1294
1295 do {
1296 if (hns_roce_cmq_csq_done(hr_dev))
1297 break;
1298 udelay(1);
1299 } while (++timeout < priv->cmq.tx_timeout);
1300
1301 if (hns_roce_cmq_csq_done(hr_dev)) {
1302 ret = 0;
1303 for (i = 0; i < num; i++) {
1304 /* check the result of hardware write back */
1305 desc[i] = csq->desc[tail++];
1306 if (tail == csq->desc_num)
1307 tail = 0;
1308
1309 desc_ret = le16_to_cpu(desc[i].retval);
1310 if (likely(desc_ret == CMD_EXEC_SUCCESS))
1311 continue;
1312
1313 dev_err_ratelimited(hr_dev->dev,
1314 "Cmdq IO error, opcode = 0x%x, return = 0x%x.\n",
1315 desc->opcode, desc_ret);
1316 ret = hns_roce_cmd_err_convert_errno(desc_ret);
1317 }
1318 } else {
1319 /* FW/HW reset or incorrect number of desc */
1320 tail = roce_read(hr_dev, ROCEE_TX_CMQ_CI_REG);
1321 dev_warn(hr_dev->dev, "CMDQ move tail from %u to %u.\n",
1322 csq->head, tail);
1323 csq->head = tail;
1324
1325 update_cmdq_status(hr_dev);
1326
1327 ret = -EAGAIN;
1328 }
1329
1330 spin_unlock_bh(&csq->lock);
1331
1332 return ret;
1333 }
1334
hns_roce_cmq_send(struct hns_roce_dev * hr_dev,struct hns_roce_cmq_desc * desc,int num)1335 static int hns_roce_cmq_send(struct hns_roce_dev *hr_dev,
1336 struct hns_roce_cmq_desc *desc, int num)
1337 {
1338 bool busy;
1339 int ret;
1340
1341 if (hr_dev->cmd.state == HNS_ROCE_CMDQ_STATE_FATAL_ERR)
1342 return -EIO;
1343
1344 if (!v2_chk_mbox_is_avail(hr_dev, &busy))
1345 return busy ? -EBUSY : 0;
1346
1347 ret = __hns_roce_cmq_send(hr_dev, desc, num);
1348 if (ret) {
1349 if (!v2_chk_mbox_is_avail(hr_dev, &busy))
1350 return busy ? -EBUSY : 0;
1351 }
1352
1353 return ret;
1354 }
1355
config_hem_ba_to_hw(struct hns_roce_dev * hr_dev,dma_addr_t base_addr,u8 cmd,unsigned long tag)1356 static int config_hem_ba_to_hw(struct hns_roce_dev *hr_dev,
1357 dma_addr_t base_addr, u8 cmd, unsigned long tag)
1358 {
1359 struct hns_roce_cmd_mailbox *mbox;
1360 int ret;
1361
1362 mbox = hns_roce_alloc_cmd_mailbox(hr_dev);
1363 if (IS_ERR(mbox))
1364 return PTR_ERR(mbox);
1365
1366 ret = hns_roce_cmd_mbox(hr_dev, base_addr, mbox->dma, cmd, tag);
1367 hns_roce_free_cmd_mailbox(hr_dev, mbox);
1368 return ret;
1369 }
1370
hns_roce_cmq_query_hw_info(struct hns_roce_dev * hr_dev)1371 static int hns_roce_cmq_query_hw_info(struct hns_roce_dev *hr_dev)
1372 {
1373 struct hns_roce_query_version *resp;
1374 struct hns_roce_cmq_desc desc;
1375 int ret;
1376
1377 hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_QUERY_HW_VER, true);
1378 ret = hns_roce_cmq_send(hr_dev, &desc, 1);
1379 if (ret)
1380 return ret;
1381
1382 resp = (struct hns_roce_query_version *)desc.data;
1383 hr_dev->hw_rev = le16_to_cpu(resp->rocee_hw_version);
1384 hr_dev->vendor_id = hr_dev->pci_dev->vendor;
1385
1386 return 0;
1387 }
1388
func_clr_hw_resetting_state(struct hns_roce_dev * hr_dev,struct hnae3_handle * handle)1389 static void func_clr_hw_resetting_state(struct hns_roce_dev *hr_dev,
1390 struct hnae3_handle *handle)
1391 {
1392 const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
1393 unsigned long end;
1394
1395 hr_dev->dis_db = true;
1396
1397 dev_warn(hr_dev->dev,
1398 "func clear is pending, device in resetting state.\n");
1399 end = HNS_ROCE_V2_HW_RST_TIMEOUT;
1400 while (end) {
1401 if (!ops->get_hw_reset_stat(handle)) {
1402 hr_dev->is_reset = true;
1403 dev_info(hr_dev->dev,
1404 "func clear success after reset.\n");
1405 return;
1406 }
1407 msleep(HNS_ROCE_V2_HW_RST_COMPLETION_WAIT);
1408 end -= HNS_ROCE_V2_HW_RST_COMPLETION_WAIT;
1409 }
1410
1411 dev_warn(hr_dev->dev, "func clear failed.\n");
1412 }
1413
func_clr_sw_resetting_state(struct hns_roce_dev * hr_dev,struct hnae3_handle * handle)1414 static void func_clr_sw_resetting_state(struct hns_roce_dev *hr_dev,
1415 struct hnae3_handle *handle)
1416 {
1417 const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
1418 unsigned long end;
1419
1420 hr_dev->dis_db = true;
1421
1422 dev_warn(hr_dev->dev,
1423 "func clear is pending, device in resetting state.\n");
1424 end = HNS_ROCE_V2_HW_RST_TIMEOUT;
1425 while (end) {
1426 if (ops->ae_dev_reset_cnt(handle) !=
1427 hr_dev->reset_cnt) {
1428 hr_dev->is_reset = true;
1429 dev_info(hr_dev->dev,
1430 "func clear success after sw reset\n");
1431 return;
1432 }
1433 msleep(HNS_ROCE_V2_HW_RST_COMPLETION_WAIT);
1434 end -= HNS_ROCE_V2_HW_RST_COMPLETION_WAIT;
1435 }
1436
1437 dev_warn(hr_dev->dev, "func clear failed because of unfinished sw reset\n");
1438 }
1439
hns_roce_func_clr_rst_proc(struct hns_roce_dev * hr_dev,int retval,int flag)1440 static void hns_roce_func_clr_rst_proc(struct hns_roce_dev *hr_dev, int retval,
1441 int flag)
1442 {
1443 struct hns_roce_v2_priv *priv = hr_dev->priv;
1444 struct hnae3_handle *handle = priv->handle;
1445 const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
1446
1447 if (ops->ae_dev_reset_cnt(handle) != hr_dev->reset_cnt) {
1448 hr_dev->dis_db = true;
1449 hr_dev->is_reset = true;
1450 dev_info(hr_dev->dev, "func clear success after reset.\n");
1451 return;
1452 }
1453
1454 if (ops->get_hw_reset_stat(handle)) {
1455 func_clr_hw_resetting_state(hr_dev, handle);
1456 return;
1457 }
1458
1459 if (ops->ae_dev_resetting(handle) &&
1460 handle->rinfo.instance_state == HNS_ROCE_STATE_INIT) {
1461 func_clr_sw_resetting_state(hr_dev, handle);
1462 return;
1463 }
1464
1465 if (retval && !flag)
1466 dev_warn(hr_dev->dev,
1467 "func clear read failed, ret = %d.\n", retval);
1468
1469 dev_warn(hr_dev->dev, "func clear failed.\n");
1470 }
1471
__hns_roce_function_clear(struct hns_roce_dev * hr_dev,int vf_id)1472 static void __hns_roce_function_clear(struct hns_roce_dev *hr_dev, int vf_id)
1473 {
1474 bool fclr_write_fail_flag = false;
1475 struct hns_roce_func_clear *resp;
1476 struct hns_roce_cmq_desc desc;
1477 unsigned long end;
1478 int ret = 0;
1479
1480 if (check_device_is_in_reset(hr_dev))
1481 goto out;
1482
1483 hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_FUNC_CLEAR, false);
1484 resp = (struct hns_roce_func_clear *)desc.data;
1485 resp->rst_funcid_en = cpu_to_le32(vf_id);
1486
1487 ret = hns_roce_cmq_send(hr_dev, &desc, 1);
1488 if (ret) {
1489 fclr_write_fail_flag = true;
1490 dev_err(hr_dev->dev, "func clear write failed, ret = %d.\n",
1491 ret);
1492 goto out;
1493 }
1494
1495 msleep(HNS_ROCE_V2_READ_FUNC_CLEAR_FLAG_INTERVAL);
1496 end = HNS_ROCE_V2_FUNC_CLEAR_TIMEOUT_MSECS;
1497 while (end) {
1498 if (check_device_is_in_reset(hr_dev))
1499 goto out;
1500 msleep(HNS_ROCE_V2_READ_FUNC_CLEAR_FLAG_FAIL_WAIT);
1501 end -= HNS_ROCE_V2_READ_FUNC_CLEAR_FLAG_FAIL_WAIT;
1502
1503 hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_FUNC_CLEAR,
1504 true);
1505
1506 resp->rst_funcid_en = cpu_to_le32(vf_id);
1507 ret = hns_roce_cmq_send(hr_dev, &desc, 1);
1508 if (ret)
1509 continue;
1510
1511 if (hr_reg_read(resp, FUNC_CLEAR_RST_FUN_DONE)) {
1512 if (vf_id == 0)
1513 hr_dev->is_reset = true;
1514 return;
1515 }
1516 }
1517
1518 out:
1519 hns_roce_func_clr_rst_proc(hr_dev, ret, fclr_write_fail_flag);
1520 }
1521
hns_roce_free_vf_resource(struct hns_roce_dev * hr_dev,int vf_id)1522 static int hns_roce_free_vf_resource(struct hns_roce_dev *hr_dev, int vf_id)
1523 {
1524 enum hns_roce_opcode_type opcode = HNS_ROCE_OPC_ALLOC_VF_RES;
1525 struct hns_roce_cmq_desc desc[2];
1526 struct hns_roce_cmq_req *req_a;
1527
1528 req_a = (struct hns_roce_cmq_req *)desc[0].data;
1529 hns_roce_cmq_setup_basic_desc(&desc[0], opcode, false);
1530 desc[0].flag |= cpu_to_le16(HNS_ROCE_CMD_FLAG_NEXT);
1531 hns_roce_cmq_setup_basic_desc(&desc[1], opcode, false);
1532 hr_reg_write(req_a, FUNC_RES_A_VF_ID, vf_id);
1533
1534 return hns_roce_cmq_send(hr_dev, desc, 2);
1535 }
1536
hns_roce_function_clear(struct hns_roce_dev * hr_dev)1537 static void hns_roce_function_clear(struct hns_roce_dev *hr_dev)
1538 {
1539 int ret;
1540 int i;
1541
1542 if (hr_dev->cmd.state == HNS_ROCE_CMDQ_STATE_FATAL_ERR)
1543 return;
1544
1545 for (i = hr_dev->func_num - 1; i >= 0; i--) {
1546 __hns_roce_function_clear(hr_dev, i);
1547
1548 if (i == 0)
1549 continue;
1550
1551 ret = hns_roce_free_vf_resource(hr_dev, i);
1552 if (ret)
1553 ibdev_err(&hr_dev->ib_dev,
1554 "failed to free vf resource, vf_id = %d, ret = %d.\n",
1555 i, ret);
1556 }
1557 }
1558
hns_roce_clear_extdb_list_info(struct hns_roce_dev * hr_dev)1559 static int hns_roce_clear_extdb_list_info(struct hns_roce_dev *hr_dev)
1560 {
1561 struct hns_roce_cmq_desc desc;
1562 int ret;
1563
1564 hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_CLEAR_EXTDB_LIST_INFO,
1565 false);
1566 ret = hns_roce_cmq_send(hr_dev, &desc, 1);
1567 if (ret)
1568 ibdev_err(&hr_dev->ib_dev,
1569 "failed to clear extended doorbell info, ret = %d.\n",
1570 ret);
1571
1572 return ret;
1573 }
1574
hns_roce_query_fw_ver(struct hns_roce_dev * hr_dev)1575 static int hns_roce_query_fw_ver(struct hns_roce_dev *hr_dev)
1576 {
1577 struct hns_roce_query_fw_info *resp;
1578 struct hns_roce_cmq_desc desc;
1579 int ret;
1580
1581 hns_roce_cmq_setup_basic_desc(&desc, HNS_QUERY_FW_VER, true);
1582 ret = hns_roce_cmq_send(hr_dev, &desc, 1);
1583 if (ret)
1584 return ret;
1585
1586 resp = (struct hns_roce_query_fw_info *)desc.data;
1587 hr_dev->caps.fw_ver = (u64)(le32_to_cpu(resp->fw_ver));
1588
1589 return 0;
1590 }
1591
hns_roce_query_func_info(struct hns_roce_dev * hr_dev)1592 static int hns_roce_query_func_info(struct hns_roce_dev *hr_dev)
1593 {
1594 struct hns_roce_cmq_desc desc;
1595 int ret;
1596
1597 if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08) {
1598 hr_dev->func_num = 1;
1599 return 0;
1600 }
1601
1602 hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_QUERY_FUNC_INFO,
1603 true);
1604 ret = hns_roce_cmq_send(hr_dev, &desc, 1);
1605 if (ret) {
1606 hr_dev->func_num = 1;
1607 return ret;
1608 }
1609
1610 hr_dev->func_num = le32_to_cpu(desc.func_info.own_func_num);
1611 hr_dev->cong_algo_tmpl_id = le32_to_cpu(desc.func_info.own_mac_id);
1612
1613 return 0;
1614 }
1615
hns_roce_hw_v2_query_counter(struct hns_roce_dev * hr_dev,u64 * stats,u32 port,int * num_counters)1616 static int hns_roce_hw_v2_query_counter(struct hns_roce_dev *hr_dev,
1617 u64 *stats, u32 port, int *num_counters)
1618 {
1619 #define CNT_PER_DESC 3
1620 struct hns_roce_cmq_desc *desc;
1621 int bd_idx, cnt_idx;
1622 __le64 *cnt_data;
1623 int desc_num;
1624 int ret;
1625 int i;
1626
1627 if (port > hr_dev->caps.num_ports)
1628 return -EINVAL;
1629
1630 desc_num = DIV_ROUND_UP(HNS_ROCE_HW_CNT_TOTAL, CNT_PER_DESC);
1631 desc = kcalloc(desc_num, sizeof(*desc), GFP_KERNEL);
1632 if (!desc)
1633 return -ENOMEM;
1634
1635 for (i = 0; i < desc_num; i++) {
1636 hns_roce_cmq_setup_basic_desc(&desc[i],
1637 HNS_ROCE_OPC_QUERY_COUNTER, true);
1638 if (i != desc_num - 1)
1639 desc[i].flag |= cpu_to_le16(HNS_ROCE_CMD_FLAG_NEXT);
1640 }
1641
1642 ret = hns_roce_cmq_send(hr_dev, desc, desc_num);
1643 if (ret) {
1644 ibdev_err(&hr_dev->ib_dev,
1645 "failed to get counter, ret = %d.\n", ret);
1646 goto err_out;
1647 }
1648
1649 for (i = 0; i < HNS_ROCE_HW_CNT_TOTAL && i < *num_counters; i++) {
1650 bd_idx = i / CNT_PER_DESC;
1651 if (!(desc[bd_idx].flag & HNS_ROCE_CMD_FLAG_NEXT) &&
1652 bd_idx != HNS_ROCE_HW_CNT_TOTAL / CNT_PER_DESC)
1653 break;
1654
1655 cnt_data = (__le64 *)&desc[bd_idx].data[0];
1656 cnt_idx = i % CNT_PER_DESC;
1657 stats[i] = le64_to_cpu(cnt_data[cnt_idx]);
1658 }
1659 *num_counters = i;
1660
1661 err_out:
1662 kfree(desc);
1663 return ret;
1664 }
1665
hns_roce_config_global_param(struct hns_roce_dev * hr_dev)1666 static int hns_roce_config_global_param(struct hns_roce_dev *hr_dev)
1667 {
1668 struct hns_roce_cmq_desc desc;
1669 struct hns_roce_cmq_req *req = (struct hns_roce_cmq_req *)desc.data;
1670 u32 clock_cycles_of_1us;
1671
1672 hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_CFG_GLOBAL_PARAM,
1673 false);
1674
1675 if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08)
1676 clock_cycles_of_1us = HNS_ROCE_1NS_CFG;
1677 else
1678 clock_cycles_of_1us = HNS_ROCE_1US_CFG;
1679
1680 hr_reg_write(req, CFG_GLOBAL_PARAM_1US_CYCLES, clock_cycles_of_1us);
1681 hr_reg_write(req, CFG_GLOBAL_PARAM_UDP_PORT, ROCE_V2_UDP_DPORT);
1682
1683 return hns_roce_cmq_send(hr_dev, &desc, 1);
1684 }
1685
load_func_res_caps(struct hns_roce_dev * hr_dev,bool is_vf)1686 static int load_func_res_caps(struct hns_roce_dev *hr_dev, bool is_vf)
1687 {
1688 struct hns_roce_cmq_desc desc[2];
1689 struct hns_roce_cmq_req *r_a = (struct hns_roce_cmq_req *)desc[0].data;
1690 struct hns_roce_cmq_req *r_b = (struct hns_roce_cmq_req *)desc[1].data;
1691 struct hns_roce_caps *caps = &hr_dev->caps;
1692 enum hns_roce_opcode_type opcode;
1693 u32 func_num;
1694 int ret;
1695
1696 if (is_vf) {
1697 opcode = HNS_ROCE_OPC_QUERY_VF_RES;
1698 func_num = 1;
1699 } else {
1700 opcode = HNS_ROCE_OPC_QUERY_PF_RES;
1701 func_num = hr_dev->func_num;
1702 }
1703
1704 hns_roce_cmq_setup_basic_desc(&desc[0], opcode, true);
1705 desc[0].flag |= cpu_to_le16(HNS_ROCE_CMD_FLAG_NEXT);
1706 hns_roce_cmq_setup_basic_desc(&desc[1], opcode, true);
1707
1708 ret = hns_roce_cmq_send(hr_dev, desc, 2);
1709 if (ret)
1710 return ret;
1711
1712 caps->qpc_bt_num = hr_reg_read(r_a, FUNC_RES_A_QPC_BT_NUM) / func_num;
1713 caps->srqc_bt_num = hr_reg_read(r_a, FUNC_RES_A_SRQC_BT_NUM) / func_num;
1714 caps->cqc_bt_num = hr_reg_read(r_a, FUNC_RES_A_CQC_BT_NUM) / func_num;
1715 caps->mpt_bt_num = hr_reg_read(r_a, FUNC_RES_A_MPT_BT_NUM) / func_num;
1716 caps->eqc_bt_num = hr_reg_read(r_a, FUNC_RES_A_EQC_BT_NUM) / func_num;
1717 caps->smac_bt_num = hr_reg_read(r_b, FUNC_RES_B_SMAC_NUM) / func_num;
1718 caps->sgid_bt_num = hr_reg_read(r_b, FUNC_RES_B_SGID_NUM) / func_num;
1719 caps->sccc_bt_num = hr_reg_read(r_b, FUNC_RES_B_SCCC_BT_NUM) / func_num;
1720
1721 if (is_vf) {
1722 caps->sl_num = hr_reg_read(r_b, FUNC_RES_V_QID_NUM) / func_num;
1723 caps->gmv_bt_num = hr_reg_read(r_b, FUNC_RES_V_GMV_BT_NUM) /
1724 func_num;
1725 } else {
1726 caps->sl_num = hr_reg_read(r_b, FUNC_RES_B_QID_NUM) / func_num;
1727 caps->gmv_bt_num = hr_reg_read(r_b, FUNC_RES_B_GMV_BT_NUM) /
1728 func_num;
1729 }
1730
1731 return 0;
1732 }
1733
load_pf_timer_res_caps(struct hns_roce_dev * hr_dev)1734 static int load_pf_timer_res_caps(struct hns_roce_dev *hr_dev)
1735 {
1736 struct hns_roce_cmq_desc desc;
1737 struct hns_roce_cmq_req *req = (struct hns_roce_cmq_req *)desc.data;
1738 struct hns_roce_caps *caps = &hr_dev->caps;
1739 int ret;
1740
1741 hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_QUERY_PF_TIMER_RES,
1742 true);
1743
1744 ret = hns_roce_cmq_send(hr_dev, &desc, 1);
1745 if (ret)
1746 return ret;
1747
1748 caps->qpc_timer_bt_num = hr_reg_read(req, PF_TIMER_RES_QPC_ITEM_NUM);
1749 caps->cqc_timer_bt_num = hr_reg_read(req, PF_TIMER_RES_CQC_ITEM_NUM);
1750
1751 return 0;
1752 }
1753
hns_roce_query_pf_resource(struct hns_roce_dev * hr_dev)1754 static int hns_roce_query_pf_resource(struct hns_roce_dev *hr_dev)
1755 {
1756 struct device *dev = hr_dev->dev;
1757 int ret;
1758
1759 ret = load_func_res_caps(hr_dev, false);
1760 if (ret) {
1761 dev_err(dev, "failed to load pf res caps, ret = %d.\n", ret);
1762 return ret;
1763 }
1764
1765 ret = load_pf_timer_res_caps(hr_dev);
1766 if (ret)
1767 dev_err(dev, "failed to load pf timer resource, ret = %d.\n",
1768 ret);
1769
1770 return ret;
1771 }
1772
hns_roce_query_vf_resource(struct hns_roce_dev * hr_dev)1773 static int hns_roce_query_vf_resource(struct hns_roce_dev *hr_dev)
1774 {
1775 struct device *dev = hr_dev->dev;
1776 int ret;
1777
1778 ret = load_func_res_caps(hr_dev, true);
1779 if (ret)
1780 dev_err(dev, "failed to load vf res caps, ret = %d.\n", ret);
1781
1782 return ret;
1783 }
1784
__hns_roce_set_vf_switch_param(struct hns_roce_dev * hr_dev,u32 vf_id)1785 static int __hns_roce_set_vf_switch_param(struct hns_roce_dev *hr_dev,
1786 u32 vf_id)
1787 {
1788 struct hns_roce_vf_switch *swt;
1789 struct hns_roce_cmq_desc desc;
1790 int ret;
1791
1792 swt = (struct hns_roce_vf_switch *)desc.data;
1793 hns_roce_cmq_setup_basic_desc(&desc, HNS_SWITCH_PARAMETER_CFG, true);
1794 swt->rocee_sel |= cpu_to_le32(HNS_ICL_SWITCH_CMD_ROCEE_SEL);
1795 hr_reg_write(swt, VF_SWITCH_VF_ID, vf_id);
1796 ret = hns_roce_cmq_send(hr_dev, &desc, 1);
1797 if (ret)
1798 return ret;
1799
1800 desc.flag = cpu_to_le16(HNS_ROCE_CMD_FLAG_IN);
1801 desc.flag &= cpu_to_le16(~HNS_ROCE_CMD_FLAG_WR);
1802 hr_reg_enable(swt, VF_SWITCH_ALW_LPBK);
1803 hr_reg_clear(swt, VF_SWITCH_ALW_LCL_LPBK);
1804 hr_reg_enable(swt, VF_SWITCH_ALW_DST_OVRD);
1805
1806 return hns_roce_cmq_send(hr_dev, &desc, 1);
1807 }
1808
hns_roce_set_vf_switch_param(struct hns_roce_dev * hr_dev)1809 static int hns_roce_set_vf_switch_param(struct hns_roce_dev *hr_dev)
1810 {
1811 u32 vf_id;
1812 int ret;
1813
1814 for (vf_id = 0; vf_id < hr_dev->func_num; vf_id++) {
1815 ret = __hns_roce_set_vf_switch_param(hr_dev, vf_id);
1816 if (ret)
1817 return ret;
1818 }
1819 return 0;
1820 }
1821
config_vf_hem_resource(struct hns_roce_dev * hr_dev,int vf_id)1822 static int config_vf_hem_resource(struct hns_roce_dev *hr_dev, int vf_id)
1823 {
1824 struct hns_roce_cmq_desc desc[2];
1825 struct hns_roce_cmq_req *r_a = (struct hns_roce_cmq_req *)desc[0].data;
1826 struct hns_roce_cmq_req *r_b = (struct hns_roce_cmq_req *)desc[1].data;
1827 enum hns_roce_opcode_type opcode = HNS_ROCE_OPC_ALLOC_VF_RES;
1828 struct hns_roce_caps *caps = &hr_dev->caps;
1829
1830 hns_roce_cmq_setup_basic_desc(&desc[0], opcode, false);
1831 desc[0].flag |= cpu_to_le16(HNS_ROCE_CMD_FLAG_NEXT);
1832 hns_roce_cmq_setup_basic_desc(&desc[1], opcode, false);
1833
1834 hr_reg_write(r_a, FUNC_RES_A_VF_ID, vf_id);
1835
1836 hr_reg_write(r_a, FUNC_RES_A_QPC_BT_NUM, caps->qpc_bt_num);
1837 hr_reg_write(r_a, FUNC_RES_A_QPC_BT_IDX, vf_id * caps->qpc_bt_num);
1838 hr_reg_write(r_a, FUNC_RES_A_SRQC_BT_NUM, caps->srqc_bt_num);
1839 hr_reg_write(r_a, FUNC_RES_A_SRQC_BT_IDX, vf_id * caps->srqc_bt_num);
1840 hr_reg_write(r_a, FUNC_RES_A_CQC_BT_NUM, caps->cqc_bt_num);
1841 hr_reg_write(r_a, FUNC_RES_A_CQC_BT_IDX, vf_id * caps->cqc_bt_num);
1842 hr_reg_write(r_a, FUNC_RES_A_MPT_BT_NUM, caps->mpt_bt_num);
1843 hr_reg_write(r_a, FUNC_RES_A_MPT_BT_IDX, vf_id * caps->mpt_bt_num);
1844 hr_reg_write(r_a, FUNC_RES_A_EQC_BT_NUM, caps->eqc_bt_num);
1845 hr_reg_write(r_a, FUNC_RES_A_EQC_BT_IDX, vf_id * caps->eqc_bt_num);
1846 hr_reg_write(r_b, FUNC_RES_V_QID_NUM, caps->sl_num);
1847 hr_reg_write(r_b, FUNC_RES_B_QID_IDX, vf_id * caps->sl_num);
1848 hr_reg_write(r_b, FUNC_RES_B_SCCC_BT_NUM, caps->sccc_bt_num);
1849 hr_reg_write(r_b, FUNC_RES_B_SCCC_BT_IDX, vf_id * caps->sccc_bt_num);
1850
1851 if (hr_dev->pci_dev->revision >= PCI_REVISION_ID_HIP09) {
1852 hr_reg_write(r_b, FUNC_RES_V_GMV_BT_NUM, caps->gmv_bt_num);
1853 hr_reg_write(r_b, FUNC_RES_B_GMV_BT_IDX,
1854 vf_id * caps->gmv_bt_num);
1855 } else {
1856 hr_reg_write(r_b, FUNC_RES_B_SGID_NUM, caps->sgid_bt_num);
1857 hr_reg_write(r_b, FUNC_RES_B_SGID_IDX,
1858 vf_id * caps->sgid_bt_num);
1859 hr_reg_write(r_b, FUNC_RES_B_SMAC_NUM, caps->smac_bt_num);
1860 hr_reg_write(r_b, FUNC_RES_B_SMAC_IDX,
1861 vf_id * caps->smac_bt_num);
1862 }
1863
1864 return hns_roce_cmq_send(hr_dev, desc, 2);
1865 }
1866
hns_roce_alloc_vf_resource(struct hns_roce_dev * hr_dev)1867 static int hns_roce_alloc_vf_resource(struct hns_roce_dev *hr_dev)
1868 {
1869 u32 func_num = max_t(u32, 1, hr_dev->func_num);
1870 u32 vf_id;
1871 int ret;
1872
1873 for (vf_id = 0; vf_id < func_num; vf_id++) {
1874 ret = config_vf_hem_resource(hr_dev, vf_id);
1875 if (ret) {
1876 dev_err(hr_dev->dev,
1877 "failed to config vf-%u hem res, ret = %d.\n",
1878 vf_id, ret);
1879 return ret;
1880 }
1881 }
1882
1883 return 0;
1884 }
1885
hns_roce_v2_set_bt(struct hns_roce_dev * hr_dev)1886 static int hns_roce_v2_set_bt(struct hns_roce_dev *hr_dev)
1887 {
1888 struct hns_roce_cmq_desc desc;
1889 struct hns_roce_cmq_req *req = (struct hns_roce_cmq_req *)desc.data;
1890 struct hns_roce_caps *caps = &hr_dev->caps;
1891
1892 hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_CFG_BT_ATTR, false);
1893
1894 hr_reg_write(req, CFG_BT_ATTR_QPC_BA_PGSZ,
1895 caps->qpc_ba_pg_sz + PG_SHIFT_OFFSET);
1896 hr_reg_write(req, CFG_BT_ATTR_QPC_BUF_PGSZ,
1897 caps->qpc_buf_pg_sz + PG_SHIFT_OFFSET);
1898 hr_reg_write(req, CFG_BT_ATTR_QPC_HOPNUM,
1899 to_hr_hem_hopnum(caps->qpc_hop_num, caps->num_qps));
1900
1901 hr_reg_write(req, CFG_BT_ATTR_SRQC_BA_PGSZ,
1902 caps->srqc_ba_pg_sz + PG_SHIFT_OFFSET);
1903 hr_reg_write(req, CFG_BT_ATTR_SRQC_BUF_PGSZ,
1904 caps->srqc_buf_pg_sz + PG_SHIFT_OFFSET);
1905 hr_reg_write(req, CFG_BT_ATTR_SRQC_HOPNUM,
1906 to_hr_hem_hopnum(caps->srqc_hop_num, caps->num_srqs));
1907
1908 hr_reg_write(req, CFG_BT_ATTR_CQC_BA_PGSZ,
1909 caps->cqc_ba_pg_sz + PG_SHIFT_OFFSET);
1910 hr_reg_write(req, CFG_BT_ATTR_CQC_BUF_PGSZ,
1911 caps->cqc_buf_pg_sz + PG_SHIFT_OFFSET);
1912 hr_reg_write(req, CFG_BT_ATTR_CQC_HOPNUM,
1913 to_hr_hem_hopnum(caps->cqc_hop_num, caps->num_cqs));
1914
1915 hr_reg_write(req, CFG_BT_ATTR_MPT_BA_PGSZ,
1916 caps->mpt_ba_pg_sz + PG_SHIFT_OFFSET);
1917 hr_reg_write(req, CFG_BT_ATTR_MPT_BUF_PGSZ,
1918 caps->mpt_buf_pg_sz + PG_SHIFT_OFFSET);
1919 hr_reg_write(req, CFG_BT_ATTR_MPT_HOPNUM,
1920 to_hr_hem_hopnum(caps->mpt_hop_num, caps->num_mtpts));
1921
1922 hr_reg_write(req, CFG_BT_ATTR_SCCC_BA_PGSZ,
1923 caps->sccc_ba_pg_sz + PG_SHIFT_OFFSET);
1924 hr_reg_write(req, CFG_BT_ATTR_SCCC_BUF_PGSZ,
1925 caps->sccc_buf_pg_sz + PG_SHIFT_OFFSET);
1926 hr_reg_write(req, CFG_BT_ATTR_SCCC_HOPNUM,
1927 to_hr_hem_hopnum(caps->sccc_hop_num, caps->num_qps));
1928
1929 return hns_roce_cmq_send(hr_dev, &desc, 1);
1930 }
1931
calc_pg_sz(u32 obj_num,u32 obj_size,u32 hop_num,u32 ctx_bt_num,u32 * buf_page_size,u32 * bt_page_size,u32 hem_type)1932 static void calc_pg_sz(u32 obj_num, u32 obj_size, u32 hop_num, u32 ctx_bt_num,
1933 u32 *buf_page_size, u32 *bt_page_size, u32 hem_type)
1934 {
1935 u64 obj_per_chunk;
1936 u64 bt_chunk_size = PAGE_SIZE;
1937 u64 buf_chunk_size = PAGE_SIZE;
1938 u64 obj_per_chunk_default = buf_chunk_size / obj_size;
1939
1940 *buf_page_size = 0;
1941 *bt_page_size = 0;
1942
1943 switch (hop_num) {
1944 case 3:
1945 obj_per_chunk = ctx_bt_num * (bt_chunk_size / BA_BYTE_LEN) *
1946 (bt_chunk_size / BA_BYTE_LEN) *
1947 (bt_chunk_size / BA_BYTE_LEN) *
1948 obj_per_chunk_default;
1949 break;
1950 case 2:
1951 obj_per_chunk = ctx_bt_num * (bt_chunk_size / BA_BYTE_LEN) *
1952 (bt_chunk_size / BA_BYTE_LEN) *
1953 obj_per_chunk_default;
1954 break;
1955 case 1:
1956 obj_per_chunk = ctx_bt_num * (bt_chunk_size / BA_BYTE_LEN) *
1957 obj_per_chunk_default;
1958 break;
1959 case HNS_ROCE_HOP_NUM_0:
1960 obj_per_chunk = ctx_bt_num * obj_per_chunk_default;
1961 break;
1962 default:
1963 pr_err("table %u not support hop_num = %u!\n", hem_type,
1964 hop_num);
1965 return;
1966 }
1967
1968 if (hem_type >= HEM_TYPE_MTT)
1969 *bt_page_size = ilog2(DIV_ROUND_UP(obj_num, obj_per_chunk));
1970 else
1971 *buf_page_size = ilog2(DIV_ROUND_UP(obj_num, obj_per_chunk));
1972 }
1973
set_hem_page_size(struct hns_roce_dev * hr_dev)1974 static void set_hem_page_size(struct hns_roce_dev *hr_dev)
1975 {
1976 struct hns_roce_caps *caps = &hr_dev->caps;
1977
1978 /* EQ */
1979 caps->eqe_ba_pg_sz = 0;
1980 caps->eqe_buf_pg_sz = 0;
1981
1982 /* Link Table */
1983 caps->llm_buf_pg_sz = 0;
1984
1985 /* MR */
1986 caps->mpt_ba_pg_sz = 0;
1987 caps->mpt_buf_pg_sz = 0;
1988 caps->pbl_ba_pg_sz = HNS_ROCE_BA_PG_SZ_SUPPORTED_16K;
1989 caps->pbl_buf_pg_sz = 0;
1990 calc_pg_sz(caps->num_mtpts, caps->mtpt_entry_sz, caps->mpt_hop_num,
1991 caps->mpt_bt_num, &caps->mpt_buf_pg_sz, &caps->mpt_ba_pg_sz,
1992 HEM_TYPE_MTPT);
1993
1994 /* QP */
1995 caps->qpc_ba_pg_sz = 0;
1996 caps->qpc_buf_pg_sz = 0;
1997 caps->qpc_timer_ba_pg_sz = 0;
1998 caps->qpc_timer_buf_pg_sz = 0;
1999 caps->sccc_ba_pg_sz = 0;
2000 caps->sccc_buf_pg_sz = 0;
2001 caps->mtt_ba_pg_sz = 0;
2002 caps->mtt_buf_pg_sz = 0;
2003 calc_pg_sz(caps->num_qps, caps->qpc_sz, caps->qpc_hop_num,
2004 caps->qpc_bt_num, &caps->qpc_buf_pg_sz, &caps->qpc_ba_pg_sz,
2005 HEM_TYPE_QPC);
2006
2007 if (caps->flags & HNS_ROCE_CAP_FLAG_QP_FLOW_CTRL)
2008 calc_pg_sz(caps->num_qps, caps->sccc_sz, caps->sccc_hop_num,
2009 caps->sccc_bt_num, &caps->sccc_buf_pg_sz,
2010 &caps->sccc_ba_pg_sz, HEM_TYPE_SCCC);
2011
2012 /* CQ */
2013 caps->cqc_ba_pg_sz = 0;
2014 caps->cqc_buf_pg_sz = 0;
2015 caps->cqc_timer_ba_pg_sz = 0;
2016 caps->cqc_timer_buf_pg_sz = 0;
2017 caps->cqe_ba_pg_sz = HNS_ROCE_BA_PG_SZ_SUPPORTED_256K;
2018 caps->cqe_buf_pg_sz = 0;
2019 calc_pg_sz(caps->num_cqs, caps->cqc_entry_sz, caps->cqc_hop_num,
2020 caps->cqc_bt_num, &caps->cqc_buf_pg_sz, &caps->cqc_ba_pg_sz,
2021 HEM_TYPE_CQC);
2022 calc_pg_sz(caps->max_cqes, caps->cqe_sz, caps->cqe_hop_num,
2023 1, &caps->cqe_buf_pg_sz, &caps->cqe_ba_pg_sz, HEM_TYPE_CQE);
2024
2025 /* SRQ */
2026 if (caps->flags & HNS_ROCE_CAP_FLAG_SRQ) {
2027 caps->srqc_ba_pg_sz = 0;
2028 caps->srqc_buf_pg_sz = 0;
2029 caps->srqwqe_ba_pg_sz = 0;
2030 caps->srqwqe_buf_pg_sz = 0;
2031 caps->idx_ba_pg_sz = 0;
2032 caps->idx_buf_pg_sz = 0;
2033 calc_pg_sz(caps->num_srqs, caps->srqc_entry_sz,
2034 caps->srqc_hop_num, caps->srqc_bt_num,
2035 &caps->srqc_buf_pg_sz, &caps->srqc_ba_pg_sz,
2036 HEM_TYPE_SRQC);
2037 calc_pg_sz(caps->num_srqwqe_segs, caps->mtt_entry_sz,
2038 caps->srqwqe_hop_num, 1, &caps->srqwqe_buf_pg_sz,
2039 &caps->srqwqe_ba_pg_sz, HEM_TYPE_SRQWQE);
2040 calc_pg_sz(caps->num_idx_segs, caps->idx_entry_sz,
2041 caps->idx_hop_num, 1, &caps->idx_buf_pg_sz,
2042 &caps->idx_ba_pg_sz, HEM_TYPE_IDX);
2043 }
2044
2045 /* GMV */
2046 caps->gmv_ba_pg_sz = 0;
2047 caps->gmv_buf_pg_sz = 0;
2048 }
2049
2050 /* Apply all loaded caps before setting to hardware */
apply_func_caps(struct hns_roce_dev * hr_dev)2051 static void apply_func_caps(struct hns_roce_dev *hr_dev)
2052 {
2053 struct hns_roce_caps *caps = &hr_dev->caps;
2054 struct hns_roce_v2_priv *priv = hr_dev->priv;
2055
2056 /* The following configurations don't need to be got from firmware. */
2057 caps->qpc_timer_entry_sz = HNS_ROCE_V2_QPC_TIMER_ENTRY_SZ;
2058 caps->cqc_timer_entry_sz = HNS_ROCE_V2_CQC_TIMER_ENTRY_SZ;
2059 caps->mtt_entry_sz = HNS_ROCE_V2_MTT_ENTRY_SZ;
2060
2061 caps->pbl_hop_num = HNS_ROCE_PBL_HOP_NUM;
2062 caps->qpc_timer_hop_num = HNS_ROCE_HOP_NUM_0;
2063 caps->cqc_timer_hop_num = HNS_ROCE_HOP_NUM_0;
2064
2065 caps->num_srqwqe_segs = HNS_ROCE_V2_MAX_SRQWQE_SEGS;
2066 caps->num_idx_segs = HNS_ROCE_V2_MAX_IDX_SEGS;
2067
2068 if (!caps->num_comp_vectors)
2069 caps->num_comp_vectors =
2070 min_t(u32, caps->eqc_bt_num - HNS_ROCE_V2_AEQE_VEC_NUM,
2071 (u32)priv->handle->rinfo.num_vectors -
2072 (HNS_ROCE_V2_AEQE_VEC_NUM + HNS_ROCE_V2_ABNORMAL_VEC_NUM));
2073
2074 if (hr_dev->pci_dev->revision >= PCI_REVISION_ID_HIP09) {
2075 caps->eqe_hop_num = HNS_ROCE_V3_EQE_HOP_NUM;
2076 caps->ceqe_size = HNS_ROCE_V3_EQE_SIZE;
2077 caps->aeqe_size = HNS_ROCE_V3_EQE_SIZE;
2078
2079 /* The following configurations will be overwritten */
2080 caps->qpc_sz = HNS_ROCE_V3_QPC_SZ;
2081 caps->cqe_sz = HNS_ROCE_V3_CQE_SIZE;
2082 caps->sccc_sz = HNS_ROCE_V3_SCCC_SZ;
2083
2084 /* The following configurations are not got from firmware */
2085 caps->gmv_entry_sz = HNS_ROCE_V3_GMV_ENTRY_SZ;
2086
2087 caps->gmv_hop_num = HNS_ROCE_HOP_NUM_0;
2088 caps->gid_table_len[0] = caps->gmv_bt_num *
2089 (HNS_HW_PAGE_SIZE / caps->gmv_entry_sz);
2090
2091 caps->gmv_entry_num = caps->gmv_bt_num * (HNS_HW_PAGE_SIZE /
2092 caps->gmv_entry_sz);
2093 } else {
2094 u32 func_num = max_t(u32, 1, hr_dev->func_num);
2095
2096 caps->eqe_hop_num = HNS_ROCE_V2_EQE_HOP_NUM;
2097 caps->ceqe_size = HNS_ROCE_CEQE_SIZE;
2098 caps->aeqe_size = HNS_ROCE_AEQE_SIZE;
2099 caps->gid_table_len[0] /= func_num;
2100 }
2101
2102 if (hr_dev->is_vf) {
2103 caps->default_aeq_arm_st = 0x3;
2104 caps->default_ceq_arm_st = 0x3;
2105 caps->default_ceq_max_cnt = 0x1;
2106 caps->default_ceq_period = 0x10;
2107 caps->default_aeq_max_cnt = 0x1;
2108 caps->default_aeq_period = 0x10;
2109 }
2110
2111 set_hem_page_size(hr_dev);
2112 }
2113
hns_roce_query_caps(struct hns_roce_dev * hr_dev)2114 static int hns_roce_query_caps(struct hns_roce_dev *hr_dev)
2115 {
2116 struct hns_roce_cmq_desc desc[HNS_ROCE_QUERY_PF_CAPS_CMD_NUM];
2117 struct hns_roce_caps *caps = &hr_dev->caps;
2118 struct hns_roce_query_pf_caps_a *resp_a;
2119 struct hns_roce_query_pf_caps_b *resp_b;
2120 struct hns_roce_query_pf_caps_c *resp_c;
2121 struct hns_roce_query_pf_caps_d *resp_d;
2122 struct hns_roce_query_pf_caps_e *resp_e;
2123 enum hns_roce_opcode_type cmd;
2124 int ctx_hop_num;
2125 int pbl_hop_num;
2126 int ret;
2127 int i;
2128
2129 cmd = hr_dev->is_vf ? HNS_ROCE_OPC_QUERY_VF_CAPS_NUM :
2130 HNS_ROCE_OPC_QUERY_PF_CAPS_NUM;
2131
2132 for (i = 0; i < HNS_ROCE_QUERY_PF_CAPS_CMD_NUM; i++) {
2133 hns_roce_cmq_setup_basic_desc(&desc[i], cmd, true);
2134 if (i < (HNS_ROCE_QUERY_PF_CAPS_CMD_NUM - 1))
2135 desc[i].flag |= cpu_to_le16(HNS_ROCE_CMD_FLAG_NEXT);
2136 else
2137 desc[i].flag &= ~cpu_to_le16(HNS_ROCE_CMD_FLAG_NEXT);
2138 }
2139
2140 ret = hns_roce_cmq_send(hr_dev, desc, HNS_ROCE_QUERY_PF_CAPS_CMD_NUM);
2141 if (ret)
2142 return ret;
2143
2144 resp_a = (struct hns_roce_query_pf_caps_a *)desc[0].data;
2145 resp_b = (struct hns_roce_query_pf_caps_b *)desc[1].data;
2146 resp_c = (struct hns_roce_query_pf_caps_c *)desc[2].data;
2147 resp_d = (struct hns_roce_query_pf_caps_d *)desc[3].data;
2148 resp_e = (struct hns_roce_query_pf_caps_e *)desc[4].data;
2149
2150 caps->local_ca_ack_delay = resp_a->local_ca_ack_delay;
2151 caps->max_sq_sg = le16_to_cpu(resp_a->max_sq_sg);
2152 caps->max_sq_inline = le16_to_cpu(resp_a->max_sq_inline);
2153 caps->max_rq_sg = le16_to_cpu(resp_a->max_rq_sg);
2154 caps->max_rq_sg = roundup_pow_of_two(caps->max_rq_sg);
2155 caps->max_srq_sges = le16_to_cpu(resp_a->max_srq_sges);
2156 caps->max_srq_sges = roundup_pow_of_two(caps->max_srq_sges);
2157 caps->num_aeq_vectors = resp_a->num_aeq_vectors;
2158 caps->num_other_vectors = resp_a->num_other_vectors;
2159 caps->max_sq_desc_sz = resp_a->max_sq_desc_sz;
2160 caps->max_rq_desc_sz = resp_a->max_rq_desc_sz;
2161
2162 caps->mtpt_entry_sz = resp_b->mtpt_entry_sz;
2163 caps->irrl_entry_sz = resp_b->irrl_entry_sz;
2164 caps->trrl_entry_sz = resp_b->trrl_entry_sz;
2165 caps->cqc_entry_sz = resp_b->cqc_entry_sz;
2166 caps->srqc_entry_sz = resp_b->srqc_entry_sz;
2167 caps->idx_entry_sz = resp_b->idx_entry_sz;
2168 caps->sccc_sz = resp_b->sccc_sz;
2169 caps->max_mtu = resp_b->max_mtu;
2170 caps->min_cqes = resp_b->min_cqes;
2171 caps->min_wqes = resp_b->min_wqes;
2172 caps->page_size_cap = le32_to_cpu(resp_b->page_size_cap);
2173 caps->pkey_table_len[0] = resp_b->pkey_table_len;
2174 caps->phy_num_uars = resp_b->phy_num_uars;
2175 ctx_hop_num = resp_b->ctx_hop_num;
2176 pbl_hop_num = resp_b->pbl_hop_num;
2177
2178 caps->num_pds = 1 << hr_reg_read(resp_c, PF_CAPS_C_NUM_PDS);
2179
2180 caps->flags = hr_reg_read(resp_c, PF_CAPS_C_CAP_FLAGS);
2181 caps->flags |= le16_to_cpu(resp_d->cap_flags_ex) <<
2182 HNS_ROCE_CAP_FLAGS_EX_SHIFT;
2183
2184 caps->num_cqs = 1 << hr_reg_read(resp_c, PF_CAPS_C_NUM_CQS);
2185 caps->gid_table_len[0] = hr_reg_read(resp_c, PF_CAPS_C_MAX_GID);
2186 caps->max_cqes = 1 << hr_reg_read(resp_c, PF_CAPS_C_CQ_DEPTH);
2187 caps->num_xrcds = 1 << hr_reg_read(resp_c, PF_CAPS_C_NUM_XRCDS);
2188 caps->num_mtpts = 1 << hr_reg_read(resp_c, PF_CAPS_C_NUM_MRWS);
2189 caps->num_qps = 1 << hr_reg_read(resp_c, PF_CAPS_C_NUM_QPS);
2190 caps->max_qp_init_rdma = hr_reg_read(resp_c, PF_CAPS_C_MAX_ORD);
2191 caps->max_qp_dest_rdma = caps->max_qp_init_rdma;
2192 caps->max_wqes = 1 << le16_to_cpu(resp_c->sq_depth);
2193
2194 caps->num_srqs = 1 << hr_reg_read(resp_d, PF_CAPS_D_NUM_SRQS);
2195 caps->cong_type = hr_reg_read(resp_d, PF_CAPS_D_CONG_TYPE);
2196 caps->max_srq_wrs = 1 << le16_to_cpu(resp_d->srq_depth);
2197 caps->ceqe_depth = 1 << hr_reg_read(resp_d, PF_CAPS_D_CEQ_DEPTH);
2198 caps->num_comp_vectors = hr_reg_read(resp_d, PF_CAPS_D_NUM_CEQS);
2199 caps->aeqe_depth = 1 << hr_reg_read(resp_d, PF_CAPS_D_AEQ_DEPTH);
2200 caps->reserved_pds = hr_reg_read(resp_d, PF_CAPS_D_RSV_PDS);
2201 caps->num_uars = 1 << hr_reg_read(resp_d, PF_CAPS_D_NUM_UARS);
2202 caps->reserved_qps = hr_reg_read(resp_d, PF_CAPS_D_RSV_QPS);
2203 caps->reserved_uars = hr_reg_read(resp_d, PF_CAPS_D_RSV_UARS);
2204
2205 caps->reserved_mrws = hr_reg_read(resp_e, PF_CAPS_E_RSV_MRWS);
2206 caps->chunk_sz = 1 << hr_reg_read(resp_e, PF_CAPS_E_CHUNK_SIZE_SHIFT);
2207 caps->reserved_cqs = hr_reg_read(resp_e, PF_CAPS_E_RSV_CQS);
2208 caps->reserved_xrcds = hr_reg_read(resp_e, PF_CAPS_E_RSV_XRCDS);
2209 caps->reserved_srqs = hr_reg_read(resp_e, PF_CAPS_E_RSV_SRQS);
2210 caps->reserved_lkey = hr_reg_read(resp_e, PF_CAPS_E_RSV_LKEYS);
2211
2212 caps->qpc_hop_num = ctx_hop_num;
2213 caps->sccc_hop_num = ctx_hop_num;
2214 caps->srqc_hop_num = ctx_hop_num;
2215 caps->cqc_hop_num = ctx_hop_num;
2216 caps->mpt_hop_num = ctx_hop_num;
2217 caps->mtt_hop_num = pbl_hop_num;
2218 caps->cqe_hop_num = pbl_hop_num;
2219 caps->srqwqe_hop_num = pbl_hop_num;
2220 caps->idx_hop_num = pbl_hop_num;
2221 caps->wqe_sq_hop_num = hr_reg_read(resp_d, PF_CAPS_D_SQWQE_HOP_NUM);
2222 caps->wqe_sge_hop_num = hr_reg_read(resp_d, PF_CAPS_D_EX_SGE_HOP_NUM);
2223 caps->wqe_rq_hop_num = hr_reg_read(resp_d, PF_CAPS_D_RQWQE_HOP_NUM);
2224
2225 if (!(caps->page_size_cap & PAGE_SIZE))
2226 caps->page_size_cap = HNS_ROCE_V2_PAGE_SIZE_SUPPORTED;
2227
2228 if (!hr_dev->is_vf) {
2229 caps->cqe_sz = resp_a->cqe_sz;
2230 caps->qpc_sz = le16_to_cpu(resp_b->qpc_sz);
2231 caps->default_aeq_arm_st =
2232 hr_reg_read(resp_d, PF_CAPS_D_AEQ_ARM_ST);
2233 caps->default_ceq_arm_st =
2234 hr_reg_read(resp_d, PF_CAPS_D_CEQ_ARM_ST);
2235 caps->default_ceq_max_cnt = le16_to_cpu(resp_e->ceq_max_cnt);
2236 caps->default_ceq_period = le16_to_cpu(resp_e->ceq_period);
2237 caps->default_aeq_max_cnt = le16_to_cpu(resp_e->aeq_max_cnt);
2238 caps->default_aeq_period = le16_to_cpu(resp_e->aeq_period);
2239 }
2240
2241 return 0;
2242 }
2243
config_hem_entry_size(struct hns_roce_dev * hr_dev,u32 type,u32 val)2244 static int config_hem_entry_size(struct hns_roce_dev *hr_dev, u32 type, u32 val)
2245 {
2246 struct hns_roce_cmq_desc desc;
2247 struct hns_roce_cmq_req *req = (struct hns_roce_cmq_req *)desc.data;
2248
2249 hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_CFG_ENTRY_SIZE,
2250 false);
2251
2252 hr_reg_write(req, CFG_HEM_ENTRY_SIZE_TYPE, type);
2253 hr_reg_write(req, CFG_HEM_ENTRY_SIZE_VALUE, val);
2254
2255 return hns_roce_cmq_send(hr_dev, &desc, 1);
2256 }
2257
hns_roce_config_entry_size(struct hns_roce_dev * hr_dev)2258 static int hns_roce_config_entry_size(struct hns_roce_dev *hr_dev)
2259 {
2260 struct hns_roce_caps *caps = &hr_dev->caps;
2261 int ret;
2262
2263 if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08)
2264 return 0;
2265
2266 ret = config_hem_entry_size(hr_dev, HNS_ROCE_CFG_QPC_SIZE,
2267 caps->qpc_sz);
2268 if (ret) {
2269 dev_err(hr_dev->dev, "failed to cfg qpc sz, ret = %d.\n", ret);
2270 return ret;
2271 }
2272
2273 ret = config_hem_entry_size(hr_dev, HNS_ROCE_CFG_SCCC_SIZE,
2274 caps->sccc_sz);
2275 if (ret)
2276 dev_err(hr_dev->dev, "failed to cfg sccc sz, ret = %d.\n", ret);
2277
2278 return ret;
2279 }
2280
hns_roce_v2_vf_profile(struct hns_roce_dev * hr_dev)2281 static int hns_roce_v2_vf_profile(struct hns_roce_dev *hr_dev)
2282 {
2283 struct device *dev = hr_dev->dev;
2284 int ret;
2285
2286 hr_dev->func_num = 1;
2287
2288 ret = hns_roce_query_caps(hr_dev);
2289 if (ret) {
2290 dev_err(dev, "failed to query VF caps, ret = %d.\n", ret);
2291 return ret;
2292 }
2293
2294 ret = hns_roce_query_vf_resource(hr_dev);
2295 if (ret) {
2296 dev_err(dev, "failed to query VF resource, ret = %d.\n", ret);
2297 return ret;
2298 }
2299
2300 apply_func_caps(hr_dev);
2301
2302 ret = hns_roce_v2_set_bt(hr_dev);
2303 if (ret)
2304 dev_err(dev, "failed to config VF BA table, ret = %d.\n", ret);
2305
2306 return ret;
2307 }
2308
hns_roce_v2_pf_profile(struct hns_roce_dev * hr_dev)2309 static int hns_roce_v2_pf_profile(struct hns_roce_dev *hr_dev)
2310 {
2311 struct device *dev = hr_dev->dev;
2312 int ret;
2313
2314 ret = hns_roce_query_func_info(hr_dev);
2315 if (ret) {
2316 dev_err(dev, "failed to query func info, ret = %d.\n", ret);
2317 return ret;
2318 }
2319
2320 ret = hns_roce_config_global_param(hr_dev);
2321 if (ret) {
2322 dev_err(dev, "failed to config global param, ret = %d.\n", ret);
2323 return ret;
2324 }
2325
2326 ret = hns_roce_set_vf_switch_param(hr_dev);
2327 if (ret) {
2328 dev_err(dev, "failed to set switch param, ret = %d.\n", ret);
2329 return ret;
2330 }
2331
2332 ret = hns_roce_query_caps(hr_dev);
2333 if (ret) {
2334 dev_err(dev, "failed to query PF caps, ret = %d.\n", ret);
2335 return ret;
2336 }
2337
2338 ret = hns_roce_query_pf_resource(hr_dev);
2339 if (ret) {
2340 dev_err(dev, "failed to query pf resource, ret = %d.\n", ret);
2341 return ret;
2342 }
2343
2344 apply_func_caps(hr_dev);
2345
2346 ret = hns_roce_alloc_vf_resource(hr_dev);
2347 if (ret) {
2348 dev_err(dev, "failed to alloc vf resource, ret = %d.\n", ret);
2349 return ret;
2350 }
2351
2352 ret = hns_roce_v2_set_bt(hr_dev);
2353 if (ret) {
2354 dev_err(dev, "failed to config BA table, ret = %d.\n", ret);
2355 return ret;
2356 }
2357
2358 /* Configure the size of QPC, SCCC, etc. */
2359 return hns_roce_config_entry_size(hr_dev);
2360 }
2361
hns_roce_v2_profile(struct hns_roce_dev * hr_dev)2362 static int hns_roce_v2_profile(struct hns_roce_dev *hr_dev)
2363 {
2364 struct device *dev = hr_dev->dev;
2365 int ret;
2366
2367 ret = hns_roce_cmq_query_hw_info(hr_dev);
2368 if (ret) {
2369 dev_err(dev, "failed to query hardware info, ret = %d.\n", ret);
2370 return ret;
2371 }
2372
2373 ret = hns_roce_query_fw_ver(hr_dev);
2374 if (ret) {
2375 dev_err(dev, "failed to query firmware info, ret = %d.\n", ret);
2376 return ret;
2377 }
2378
2379 hr_dev->vendor_part_id = hr_dev->pci_dev->device;
2380 hr_dev->sys_image_guid = be64_to_cpu(hr_dev->ib_dev.node_guid);
2381
2382 if (hr_dev->is_vf)
2383 return hns_roce_v2_vf_profile(hr_dev);
2384 else
2385 return hns_roce_v2_pf_profile(hr_dev);
2386 }
2387
config_llm_table(struct hns_roce_buf * data_buf,void * cfg_buf)2388 static void config_llm_table(struct hns_roce_buf *data_buf, void *cfg_buf)
2389 {
2390 u32 i, next_ptr, page_num;
2391 __le64 *entry = cfg_buf;
2392 dma_addr_t addr;
2393 u64 val;
2394
2395 page_num = data_buf->npages;
2396 for (i = 0; i < page_num; i++) {
2397 addr = hns_roce_buf_page(data_buf, i);
2398 if (i == (page_num - 1))
2399 next_ptr = 0;
2400 else
2401 next_ptr = i + 1;
2402
2403 val = HNS_ROCE_EXT_LLM_ENTRY(addr, (u64)next_ptr);
2404 entry[i] = cpu_to_le64(val);
2405 }
2406 }
2407
set_llm_cfg_to_hw(struct hns_roce_dev * hr_dev,struct hns_roce_link_table * table)2408 static int set_llm_cfg_to_hw(struct hns_roce_dev *hr_dev,
2409 struct hns_roce_link_table *table)
2410 {
2411 struct hns_roce_cmq_desc desc[2];
2412 struct hns_roce_cmq_req *r_a = (struct hns_roce_cmq_req *)desc[0].data;
2413 struct hns_roce_cmq_req *r_b = (struct hns_roce_cmq_req *)desc[1].data;
2414 struct hns_roce_buf *buf = table->buf;
2415 enum hns_roce_opcode_type opcode;
2416 dma_addr_t addr;
2417
2418 opcode = HNS_ROCE_OPC_CFG_EXT_LLM;
2419 hns_roce_cmq_setup_basic_desc(&desc[0], opcode, false);
2420 desc[0].flag |= cpu_to_le16(HNS_ROCE_CMD_FLAG_NEXT);
2421 hns_roce_cmq_setup_basic_desc(&desc[1], opcode, false);
2422
2423 hr_reg_write(r_a, CFG_LLM_A_BA_L, lower_32_bits(table->table.map));
2424 hr_reg_write(r_a, CFG_LLM_A_BA_H, upper_32_bits(table->table.map));
2425 hr_reg_write(r_a, CFG_LLM_A_DEPTH, buf->npages);
2426 hr_reg_write(r_a, CFG_LLM_A_PGSZ, to_hr_hw_page_shift(buf->page_shift));
2427 hr_reg_enable(r_a, CFG_LLM_A_INIT_EN);
2428
2429 addr = to_hr_hw_page_addr(hns_roce_buf_page(buf, 0));
2430 hr_reg_write(r_a, CFG_LLM_A_HEAD_BA_L, lower_32_bits(addr));
2431 hr_reg_write(r_a, CFG_LLM_A_HEAD_BA_H, upper_32_bits(addr));
2432 hr_reg_write(r_a, CFG_LLM_A_HEAD_NXTPTR, 1);
2433 hr_reg_write(r_a, CFG_LLM_A_HEAD_PTR, 0);
2434
2435 addr = to_hr_hw_page_addr(hns_roce_buf_page(buf, buf->npages - 1));
2436 hr_reg_write(r_b, CFG_LLM_B_TAIL_BA_L, lower_32_bits(addr));
2437 hr_reg_write(r_b, CFG_LLM_B_TAIL_BA_H, upper_32_bits(addr));
2438 hr_reg_write(r_b, CFG_LLM_B_TAIL_PTR, buf->npages - 1);
2439
2440 return hns_roce_cmq_send(hr_dev, desc, 2);
2441 }
2442
2443 static struct hns_roce_link_table *
alloc_link_table_buf(struct hns_roce_dev * hr_dev)2444 alloc_link_table_buf(struct hns_roce_dev *hr_dev)
2445 {
2446 struct hns_roce_v2_priv *priv = hr_dev->priv;
2447 struct hns_roce_link_table *link_tbl;
2448 u32 pg_shift, size, min_size;
2449
2450 link_tbl = &priv->ext_llm;
2451 pg_shift = hr_dev->caps.llm_buf_pg_sz + PAGE_SHIFT;
2452 size = hr_dev->caps.num_qps * HNS_ROCE_V2_EXT_LLM_ENTRY_SZ;
2453 min_size = HNS_ROCE_EXT_LLM_MIN_PAGES(hr_dev->caps.sl_num) << pg_shift;
2454
2455 /* Alloc data table */
2456 size = max(size, min_size);
2457 link_tbl->buf = hns_roce_buf_alloc(hr_dev, size, pg_shift, 0);
2458 if (IS_ERR(link_tbl->buf))
2459 return ERR_PTR(-ENOMEM);
2460
2461 /* Alloc config table */
2462 size = link_tbl->buf->npages * sizeof(u64);
2463 link_tbl->table.buf = dma_alloc_coherent(hr_dev->dev, size,
2464 &link_tbl->table.map,
2465 GFP_KERNEL);
2466 if (!link_tbl->table.buf) {
2467 hns_roce_buf_free(hr_dev, link_tbl->buf);
2468 return ERR_PTR(-ENOMEM);
2469 }
2470
2471 return link_tbl;
2472 }
2473
free_link_table_buf(struct hns_roce_dev * hr_dev,struct hns_roce_link_table * tbl)2474 static void free_link_table_buf(struct hns_roce_dev *hr_dev,
2475 struct hns_roce_link_table *tbl)
2476 {
2477 if (tbl->buf) {
2478 u32 size = tbl->buf->npages * sizeof(u64);
2479
2480 dma_free_coherent(hr_dev->dev, size, tbl->table.buf,
2481 tbl->table.map);
2482 }
2483
2484 hns_roce_buf_free(hr_dev, tbl->buf);
2485 }
2486
hns_roce_init_link_table(struct hns_roce_dev * hr_dev)2487 static int hns_roce_init_link_table(struct hns_roce_dev *hr_dev)
2488 {
2489 struct hns_roce_link_table *link_tbl;
2490 int ret;
2491
2492 link_tbl = alloc_link_table_buf(hr_dev);
2493 if (IS_ERR(link_tbl))
2494 return -ENOMEM;
2495
2496 if (WARN_ON(link_tbl->buf->npages > HNS_ROCE_V2_EXT_LLM_MAX_DEPTH)) {
2497 ret = -EINVAL;
2498 goto err_alloc;
2499 }
2500
2501 config_llm_table(link_tbl->buf, link_tbl->table.buf);
2502 ret = set_llm_cfg_to_hw(hr_dev, link_tbl);
2503 if (ret)
2504 goto err_alloc;
2505
2506 return 0;
2507
2508 err_alloc:
2509 free_link_table_buf(hr_dev, link_tbl);
2510 return ret;
2511 }
2512
hns_roce_free_link_table(struct hns_roce_dev * hr_dev)2513 static void hns_roce_free_link_table(struct hns_roce_dev *hr_dev)
2514 {
2515 struct hns_roce_v2_priv *priv = hr_dev->priv;
2516
2517 free_link_table_buf(hr_dev, &priv->ext_llm);
2518 }
2519
free_dip_list(struct hns_roce_dev * hr_dev)2520 static void free_dip_list(struct hns_roce_dev *hr_dev)
2521 {
2522 struct hns_roce_dip *hr_dip;
2523 struct hns_roce_dip *tmp;
2524 unsigned long flags;
2525
2526 spin_lock_irqsave(&hr_dev->dip_list_lock, flags);
2527
2528 list_for_each_entry_safe(hr_dip, tmp, &hr_dev->dip_list, node) {
2529 list_del(&hr_dip->node);
2530 kfree(hr_dip);
2531 }
2532
2533 spin_unlock_irqrestore(&hr_dev->dip_list_lock, flags);
2534 }
2535
free_mr_init_pd(struct hns_roce_dev * hr_dev)2536 static struct ib_pd *free_mr_init_pd(struct hns_roce_dev *hr_dev)
2537 {
2538 struct hns_roce_v2_priv *priv = hr_dev->priv;
2539 struct hns_roce_v2_free_mr *free_mr = &priv->free_mr;
2540 struct ib_device *ibdev = &hr_dev->ib_dev;
2541 struct hns_roce_pd *hr_pd;
2542 struct ib_pd *pd;
2543
2544 hr_pd = kzalloc(sizeof(*hr_pd), GFP_KERNEL);
2545 if (ZERO_OR_NULL_PTR(hr_pd))
2546 return NULL;
2547 pd = &hr_pd->ibpd;
2548 pd->device = ibdev;
2549
2550 if (hns_roce_alloc_pd(pd, NULL)) {
2551 ibdev_err(ibdev, "failed to create pd for free mr.\n");
2552 kfree(hr_pd);
2553 return NULL;
2554 }
2555 free_mr->rsv_pd = to_hr_pd(pd);
2556 free_mr->rsv_pd->ibpd.device = &hr_dev->ib_dev;
2557 free_mr->rsv_pd->ibpd.uobject = NULL;
2558 free_mr->rsv_pd->ibpd.__internal_mr = NULL;
2559 atomic_set(&free_mr->rsv_pd->ibpd.usecnt, 0);
2560
2561 return pd;
2562 }
2563
free_mr_init_cq(struct hns_roce_dev * hr_dev)2564 static struct ib_cq *free_mr_init_cq(struct hns_roce_dev *hr_dev)
2565 {
2566 struct hns_roce_v2_priv *priv = hr_dev->priv;
2567 struct hns_roce_v2_free_mr *free_mr = &priv->free_mr;
2568 struct ib_device *ibdev = &hr_dev->ib_dev;
2569 struct ib_cq_init_attr cq_init_attr = {};
2570 struct hns_roce_cq *hr_cq;
2571 struct ib_cq *cq;
2572
2573 cq_init_attr.cqe = HNS_ROCE_FREE_MR_USED_CQE_NUM;
2574
2575 hr_cq = kzalloc(sizeof(*hr_cq), GFP_KERNEL);
2576 if (ZERO_OR_NULL_PTR(hr_cq))
2577 return NULL;
2578
2579 cq = &hr_cq->ib_cq;
2580 cq->device = ibdev;
2581
2582 if (hns_roce_create_cq(cq, &cq_init_attr, NULL)) {
2583 ibdev_err(ibdev, "failed to create cq for free mr.\n");
2584 kfree(hr_cq);
2585 return NULL;
2586 }
2587 free_mr->rsv_cq = to_hr_cq(cq);
2588 free_mr->rsv_cq->ib_cq.device = &hr_dev->ib_dev;
2589 free_mr->rsv_cq->ib_cq.uobject = NULL;
2590 free_mr->rsv_cq->ib_cq.comp_handler = NULL;
2591 free_mr->rsv_cq->ib_cq.event_handler = NULL;
2592 free_mr->rsv_cq->ib_cq.cq_context = NULL;
2593 atomic_set(&free_mr->rsv_cq->ib_cq.usecnt, 0);
2594
2595 return cq;
2596 }
2597
free_mr_init_qp(struct hns_roce_dev * hr_dev,struct ib_cq * cq,struct ib_qp_init_attr * init_attr,int i)2598 static int free_mr_init_qp(struct hns_roce_dev *hr_dev, struct ib_cq *cq,
2599 struct ib_qp_init_attr *init_attr, int i)
2600 {
2601 struct hns_roce_v2_priv *priv = hr_dev->priv;
2602 struct hns_roce_v2_free_mr *free_mr = &priv->free_mr;
2603 struct ib_device *ibdev = &hr_dev->ib_dev;
2604 struct hns_roce_qp *hr_qp;
2605 struct ib_qp *qp;
2606 int ret;
2607
2608 hr_qp = kzalloc(sizeof(*hr_qp), GFP_KERNEL);
2609 if (ZERO_OR_NULL_PTR(hr_qp))
2610 return -ENOMEM;
2611
2612 qp = &hr_qp->ibqp;
2613 qp->device = ibdev;
2614
2615 ret = hns_roce_create_qp(qp, init_attr, NULL);
2616 if (ret) {
2617 ibdev_err(ibdev, "failed to create qp for free mr.\n");
2618 kfree(hr_qp);
2619 return ret;
2620 }
2621
2622 free_mr->rsv_qp[i] = hr_qp;
2623 free_mr->rsv_qp[i]->ibqp.recv_cq = cq;
2624 free_mr->rsv_qp[i]->ibqp.send_cq = cq;
2625
2626 return 0;
2627 }
2628
free_mr_exit(struct hns_roce_dev * hr_dev)2629 static void free_mr_exit(struct hns_roce_dev *hr_dev)
2630 {
2631 struct hns_roce_v2_priv *priv = hr_dev->priv;
2632 struct hns_roce_v2_free_mr *free_mr = &priv->free_mr;
2633 struct ib_qp *qp;
2634 int i;
2635
2636 for (i = 0; i < ARRAY_SIZE(free_mr->rsv_qp); i++) {
2637 if (free_mr->rsv_qp[i]) {
2638 qp = &free_mr->rsv_qp[i]->ibqp;
2639 hns_roce_v2_destroy_qp(qp, NULL);
2640 kfree(free_mr->rsv_qp[i]);
2641 free_mr->rsv_qp[i] = NULL;
2642 }
2643 }
2644
2645 if (free_mr->rsv_cq) {
2646 hns_roce_destroy_cq(&free_mr->rsv_cq->ib_cq, NULL);
2647 kfree(free_mr->rsv_cq);
2648 free_mr->rsv_cq = NULL;
2649 }
2650
2651 if (free_mr->rsv_pd) {
2652 hns_roce_dealloc_pd(&free_mr->rsv_pd->ibpd, NULL);
2653 kfree(free_mr->rsv_pd);
2654 free_mr->rsv_pd = NULL;
2655 }
2656 }
2657
free_mr_alloc_res(struct hns_roce_dev * hr_dev)2658 static int free_mr_alloc_res(struct hns_roce_dev *hr_dev)
2659 {
2660 struct hns_roce_v2_priv *priv = hr_dev->priv;
2661 struct hns_roce_v2_free_mr *free_mr = &priv->free_mr;
2662 struct ib_qp_init_attr qp_init_attr = {};
2663 struct ib_pd *pd;
2664 struct ib_cq *cq;
2665 int ret;
2666 int i;
2667
2668 pd = free_mr_init_pd(hr_dev);
2669 if (!pd)
2670 return -ENOMEM;
2671
2672 cq = free_mr_init_cq(hr_dev);
2673 if (!cq) {
2674 ret = -ENOMEM;
2675 goto create_failed_cq;
2676 }
2677
2678 qp_init_attr.qp_type = IB_QPT_RC;
2679 qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR;
2680 qp_init_attr.send_cq = cq;
2681 qp_init_attr.recv_cq = cq;
2682 for (i = 0; i < ARRAY_SIZE(free_mr->rsv_qp); i++) {
2683 qp_init_attr.cap.max_send_wr = HNS_ROCE_FREE_MR_USED_SQWQE_NUM;
2684 qp_init_attr.cap.max_send_sge = HNS_ROCE_FREE_MR_USED_SQSGE_NUM;
2685 qp_init_attr.cap.max_recv_wr = HNS_ROCE_FREE_MR_USED_RQWQE_NUM;
2686 qp_init_attr.cap.max_recv_sge = HNS_ROCE_FREE_MR_USED_RQSGE_NUM;
2687
2688 ret = free_mr_init_qp(hr_dev, cq, &qp_init_attr, i);
2689 if (ret)
2690 goto create_failed_qp;
2691 }
2692
2693 return 0;
2694
2695 create_failed_qp:
2696 for (i--; i >= 0; i--) {
2697 hns_roce_v2_destroy_qp(&free_mr->rsv_qp[i]->ibqp, NULL);
2698 kfree(free_mr->rsv_qp[i]);
2699 }
2700 hns_roce_destroy_cq(cq, NULL);
2701 kfree(cq);
2702
2703 create_failed_cq:
2704 hns_roce_dealloc_pd(pd, NULL);
2705 kfree(pd);
2706
2707 return ret;
2708 }
2709
free_mr_modify_rsv_qp(struct hns_roce_dev * hr_dev,struct ib_qp_attr * attr,int sl_num)2710 static int free_mr_modify_rsv_qp(struct hns_roce_dev *hr_dev,
2711 struct ib_qp_attr *attr, int sl_num)
2712 {
2713 struct hns_roce_v2_priv *priv = hr_dev->priv;
2714 struct hns_roce_v2_free_mr *free_mr = &priv->free_mr;
2715 struct ib_device *ibdev = &hr_dev->ib_dev;
2716 struct hns_roce_qp *hr_qp;
2717 int loopback;
2718 int mask;
2719 int ret;
2720
2721 hr_qp = to_hr_qp(&free_mr->rsv_qp[sl_num]->ibqp);
2722 hr_qp->free_mr_en = 1;
2723 hr_qp->ibqp.device = ibdev;
2724 hr_qp->ibqp.qp_type = IB_QPT_RC;
2725
2726 mask = IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_ACCESS_FLAGS;
2727 attr->qp_state = IB_QPS_INIT;
2728 attr->port_num = 1;
2729 attr->qp_access_flags = IB_ACCESS_REMOTE_WRITE;
2730 ret = hr_dev->hw->modify_qp(&hr_qp->ibqp, attr, mask, IB_QPS_INIT,
2731 IB_QPS_INIT, NULL);
2732 if (ret) {
2733 ibdev_err(ibdev, "failed to modify qp to init, ret = %d.\n",
2734 ret);
2735 return ret;
2736 }
2737
2738 loopback = hr_dev->loop_idc;
2739 /* Set qpc lbi = 1 incidate loopback IO */
2740 hr_dev->loop_idc = 1;
2741
2742 mask = IB_QP_STATE | IB_QP_AV | IB_QP_PATH_MTU | IB_QP_DEST_QPN |
2743 IB_QP_RQ_PSN | IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER;
2744 attr->qp_state = IB_QPS_RTR;
2745 attr->ah_attr.type = RDMA_AH_ATTR_TYPE_ROCE;
2746 attr->path_mtu = IB_MTU_256;
2747 attr->dest_qp_num = hr_qp->qpn;
2748 attr->rq_psn = HNS_ROCE_FREE_MR_USED_PSN;
2749
2750 rdma_ah_set_sl(&attr->ah_attr, (u8)sl_num);
2751
2752 ret = hr_dev->hw->modify_qp(&hr_qp->ibqp, attr, mask, IB_QPS_INIT,
2753 IB_QPS_RTR, NULL);
2754 hr_dev->loop_idc = loopback;
2755 if (ret) {
2756 ibdev_err(ibdev, "failed to modify qp to rtr, ret = %d.\n",
2757 ret);
2758 return ret;
2759 }
2760
2761 mask = IB_QP_STATE | IB_QP_SQ_PSN | IB_QP_RETRY_CNT | IB_QP_TIMEOUT |
2762 IB_QP_RNR_RETRY | IB_QP_MAX_QP_RD_ATOMIC;
2763 attr->qp_state = IB_QPS_RTS;
2764 attr->sq_psn = HNS_ROCE_FREE_MR_USED_PSN;
2765 attr->retry_cnt = HNS_ROCE_FREE_MR_USED_QP_RETRY_CNT;
2766 attr->timeout = HNS_ROCE_FREE_MR_USED_QP_TIMEOUT;
2767 ret = hr_dev->hw->modify_qp(&hr_qp->ibqp, attr, mask, IB_QPS_RTR,
2768 IB_QPS_RTS, NULL);
2769 if (ret)
2770 ibdev_err(ibdev, "failed to modify qp to rts, ret = %d.\n",
2771 ret);
2772
2773 return ret;
2774 }
2775
free_mr_modify_qp(struct hns_roce_dev * hr_dev)2776 static int free_mr_modify_qp(struct hns_roce_dev *hr_dev)
2777 {
2778 struct hns_roce_v2_priv *priv = hr_dev->priv;
2779 struct hns_roce_v2_free_mr *free_mr = &priv->free_mr;
2780 struct ib_qp_attr attr = {};
2781 int ret;
2782 int i;
2783
2784 rdma_ah_set_grh(&attr.ah_attr, NULL, 0, 0, 1, 0);
2785 rdma_ah_set_static_rate(&attr.ah_attr, 3);
2786 rdma_ah_set_port_num(&attr.ah_attr, 1);
2787
2788 for (i = 0; i < ARRAY_SIZE(free_mr->rsv_qp); i++) {
2789 ret = free_mr_modify_rsv_qp(hr_dev, &attr, i);
2790 if (ret)
2791 return ret;
2792 }
2793
2794 return 0;
2795 }
2796
free_mr_init(struct hns_roce_dev * hr_dev)2797 static int free_mr_init(struct hns_roce_dev *hr_dev)
2798 {
2799 struct hns_roce_v2_priv *priv = hr_dev->priv;
2800 struct hns_roce_v2_free_mr *free_mr = &priv->free_mr;
2801 int ret;
2802
2803 mutex_init(&free_mr->mutex);
2804
2805 ret = free_mr_alloc_res(hr_dev);
2806 if (ret)
2807 return ret;
2808
2809 ret = free_mr_modify_qp(hr_dev);
2810 if (ret)
2811 goto err_modify_qp;
2812
2813 return 0;
2814
2815 err_modify_qp:
2816 free_mr_exit(hr_dev);
2817
2818 return ret;
2819 }
2820
get_hem_table(struct hns_roce_dev * hr_dev)2821 static int get_hem_table(struct hns_roce_dev *hr_dev)
2822 {
2823 unsigned int qpc_count;
2824 unsigned int cqc_count;
2825 unsigned int gmv_count;
2826 int ret;
2827 int i;
2828
2829 /* Alloc memory for source address table buffer space chunk */
2830 for (gmv_count = 0; gmv_count < hr_dev->caps.gmv_entry_num;
2831 gmv_count++) {
2832 ret = hns_roce_table_get(hr_dev, &hr_dev->gmv_table, gmv_count);
2833 if (ret)
2834 goto err_gmv_failed;
2835 }
2836
2837 if (hr_dev->is_vf)
2838 return 0;
2839
2840 /* Alloc memory for QPC Timer buffer space chunk */
2841 for (qpc_count = 0; qpc_count < hr_dev->caps.qpc_timer_bt_num;
2842 qpc_count++) {
2843 ret = hns_roce_table_get(hr_dev, &hr_dev->qpc_timer_table,
2844 qpc_count);
2845 if (ret) {
2846 dev_err(hr_dev->dev, "QPC Timer get failed\n");
2847 goto err_qpc_timer_failed;
2848 }
2849 }
2850
2851 /* Alloc memory for CQC Timer buffer space chunk */
2852 for (cqc_count = 0; cqc_count < hr_dev->caps.cqc_timer_bt_num;
2853 cqc_count++) {
2854 ret = hns_roce_table_get(hr_dev, &hr_dev->cqc_timer_table,
2855 cqc_count);
2856 if (ret) {
2857 dev_err(hr_dev->dev, "CQC Timer get failed\n");
2858 goto err_cqc_timer_failed;
2859 }
2860 }
2861
2862 return 0;
2863
2864 err_cqc_timer_failed:
2865 for (i = 0; i < cqc_count; i++)
2866 hns_roce_table_put(hr_dev, &hr_dev->cqc_timer_table, i);
2867
2868 err_qpc_timer_failed:
2869 for (i = 0; i < qpc_count; i++)
2870 hns_roce_table_put(hr_dev, &hr_dev->qpc_timer_table, i);
2871
2872 err_gmv_failed:
2873 for (i = 0; i < gmv_count; i++)
2874 hns_roce_table_put(hr_dev, &hr_dev->gmv_table, i);
2875
2876 return ret;
2877 }
2878
put_hem_table(struct hns_roce_dev * hr_dev)2879 static void put_hem_table(struct hns_roce_dev *hr_dev)
2880 {
2881 int i;
2882
2883 for (i = 0; i < hr_dev->caps.gmv_entry_num; i++)
2884 hns_roce_table_put(hr_dev, &hr_dev->gmv_table, i);
2885
2886 if (hr_dev->is_vf)
2887 return;
2888
2889 for (i = 0; i < hr_dev->caps.qpc_timer_bt_num; i++)
2890 hns_roce_table_put(hr_dev, &hr_dev->qpc_timer_table, i);
2891
2892 for (i = 0; i < hr_dev->caps.cqc_timer_bt_num; i++)
2893 hns_roce_table_put(hr_dev, &hr_dev->cqc_timer_table, i);
2894 }
2895
hns_roce_v2_init(struct hns_roce_dev * hr_dev)2896 static int hns_roce_v2_init(struct hns_roce_dev *hr_dev)
2897 {
2898 int ret;
2899
2900 /* The hns ROCEE requires the extdb info to be cleared before using */
2901 ret = hns_roce_clear_extdb_list_info(hr_dev);
2902 if (ret)
2903 return ret;
2904
2905 ret = get_hem_table(hr_dev);
2906 if (ret)
2907 return ret;
2908
2909 if (hr_dev->is_vf)
2910 return 0;
2911
2912 ret = hns_roce_init_link_table(hr_dev);
2913 if (ret) {
2914 dev_err(hr_dev->dev, "failed to init llm, ret = %d.\n", ret);
2915 goto err_llm_init_failed;
2916 }
2917
2918 return 0;
2919
2920 err_llm_init_failed:
2921 put_hem_table(hr_dev);
2922
2923 return ret;
2924 }
2925
hns_roce_v2_exit(struct hns_roce_dev * hr_dev)2926 static void hns_roce_v2_exit(struct hns_roce_dev *hr_dev)
2927 {
2928 hns_roce_function_clear(hr_dev);
2929
2930 if (!hr_dev->is_vf)
2931 hns_roce_free_link_table(hr_dev);
2932
2933 if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP09)
2934 free_dip_list(hr_dev);
2935 }
2936
hns_roce_mbox_post(struct hns_roce_dev * hr_dev,struct hns_roce_mbox_msg * mbox_msg)2937 static int hns_roce_mbox_post(struct hns_roce_dev *hr_dev,
2938 struct hns_roce_mbox_msg *mbox_msg)
2939 {
2940 struct hns_roce_cmq_desc desc;
2941 struct hns_roce_post_mbox *mb = (struct hns_roce_post_mbox *)desc.data;
2942
2943 hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_POST_MB, false);
2944
2945 mb->in_param_l = cpu_to_le32(mbox_msg->in_param);
2946 mb->in_param_h = cpu_to_le32(mbox_msg->in_param >> 32);
2947 mb->out_param_l = cpu_to_le32(mbox_msg->out_param);
2948 mb->out_param_h = cpu_to_le32(mbox_msg->out_param >> 32);
2949 mb->cmd_tag = cpu_to_le32(mbox_msg->tag << 8 | mbox_msg->cmd);
2950 mb->token_event_en = cpu_to_le32(mbox_msg->event_en << 16 |
2951 mbox_msg->token);
2952
2953 return hns_roce_cmq_send(hr_dev, &desc, 1);
2954 }
2955
v2_wait_mbox_complete(struct hns_roce_dev * hr_dev,u32 timeout,u8 * complete_status)2956 static int v2_wait_mbox_complete(struct hns_roce_dev *hr_dev, u32 timeout,
2957 u8 *complete_status)
2958 {
2959 struct hns_roce_mbox_status *mb_st;
2960 struct hns_roce_cmq_desc desc;
2961 unsigned long end;
2962 int ret = -EBUSY;
2963 u32 status;
2964 bool busy;
2965
2966 mb_st = (struct hns_roce_mbox_status *)desc.data;
2967 end = msecs_to_jiffies(timeout) + jiffies;
2968 while (v2_chk_mbox_is_avail(hr_dev, &busy)) {
2969 if (hr_dev->cmd.state == HNS_ROCE_CMDQ_STATE_FATAL_ERR)
2970 return -EIO;
2971
2972 status = 0;
2973 hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_QUERY_MB_ST,
2974 true);
2975 ret = __hns_roce_cmq_send(hr_dev, &desc, 1);
2976 if (!ret) {
2977 status = le32_to_cpu(mb_st->mb_status_hw_run);
2978 /* No pending message exists in ROCEE mbox. */
2979 if (!(status & MB_ST_HW_RUN_M))
2980 break;
2981 } else if (!v2_chk_mbox_is_avail(hr_dev, &busy)) {
2982 break;
2983 }
2984
2985 if (time_after(jiffies, end)) {
2986 dev_err_ratelimited(hr_dev->dev,
2987 "failed to wait mbox status 0x%x\n",
2988 status);
2989 return -ETIMEDOUT;
2990 }
2991
2992 cond_resched();
2993 ret = -EBUSY;
2994 }
2995
2996 if (!ret) {
2997 *complete_status = (u8)(status & MB_ST_COMPLETE_M);
2998 } else if (!v2_chk_mbox_is_avail(hr_dev, &busy)) {
2999 /* Ignore all errors if the mbox is unavailable. */
3000 ret = 0;
3001 *complete_status = MB_ST_COMPLETE_M;
3002 }
3003
3004 return ret;
3005 }
3006
v2_post_mbox(struct hns_roce_dev * hr_dev,struct hns_roce_mbox_msg * mbox_msg)3007 static int v2_post_mbox(struct hns_roce_dev *hr_dev,
3008 struct hns_roce_mbox_msg *mbox_msg)
3009 {
3010 u8 status = 0;
3011 int ret;
3012
3013 /* Waiting for the mbox to be idle */
3014 ret = v2_wait_mbox_complete(hr_dev, HNS_ROCE_V2_GO_BIT_TIMEOUT_MSECS,
3015 &status);
3016 if (unlikely(ret)) {
3017 dev_err_ratelimited(hr_dev->dev,
3018 "failed to check post mbox status = 0x%x, ret = %d.\n",
3019 status, ret);
3020 return ret;
3021 }
3022
3023 /* Post new message to mbox */
3024 ret = hns_roce_mbox_post(hr_dev, mbox_msg);
3025 if (ret)
3026 dev_err_ratelimited(hr_dev->dev,
3027 "failed to post mailbox, ret = %d.\n", ret);
3028
3029 return ret;
3030 }
3031
v2_poll_mbox_done(struct hns_roce_dev * hr_dev)3032 static int v2_poll_mbox_done(struct hns_roce_dev *hr_dev)
3033 {
3034 u8 status = 0;
3035 int ret;
3036
3037 ret = v2_wait_mbox_complete(hr_dev, HNS_ROCE_CMD_TIMEOUT_MSECS,
3038 &status);
3039 if (!ret) {
3040 if (status != MB_ST_COMPLETE_SUCC)
3041 return -EBUSY;
3042 } else {
3043 dev_err_ratelimited(hr_dev->dev,
3044 "failed to check mbox status = 0x%x, ret = %d.\n",
3045 status, ret);
3046 }
3047
3048 return ret;
3049 }
3050
copy_gid(void * dest,const union ib_gid * gid)3051 static void copy_gid(void *dest, const union ib_gid *gid)
3052 {
3053 #define GID_SIZE 4
3054 const union ib_gid *src = gid;
3055 __le32 (*p)[GID_SIZE] = dest;
3056 int i;
3057
3058 if (!gid)
3059 src = &zgid;
3060
3061 for (i = 0; i < GID_SIZE; i++)
3062 (*p)[i] = cpu_to_le32(*(u32 *)&src->raw[i * sizeof(u32)]);
3063 }
3064
config_sgid_table(struct hns_roce_dev * hr_dev,int gid_index,const union ib_gid * gid,enum hns_roce_sgid_type sgid_type)3065 static int config_sgid_table(struct hns_roce_dev *hr_dev,
3066 int gid_index, const union ib_gid *gid,
3067 enum hns_roce_sgid_type sgid_type)
3068 {
3069 struct hns_roce_cmq_desc desc;
3070 struct hns_roce_cfg_sgid_tb *sgid_tb =
3071 (struct hns_roce_cfg_sgid_tb *)desc.data;
3072
3073 hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_CFG_SGID_TB, false);
3074
3075 hr_reg_write(sgid_tb, CFG_SGID_TB_TABLE_IDX, gid_index);
3076 hr_reg_write(sgid_tb, CFG_SGID_TB_VF_SGID_TYPE, sgid_type);
3077
3078 copy_gid(&sgid_tb->vf_sgid_l, gid);
3079
3080 return hns_roce_cmq_send(hr_dev, &desc, 1);
3081 }
3082
config_gmv_table(struct hns_roce_dev * hr_dev,int gid_index,const union ib_gid * gid,enum hns_roce_sgid_type sgid_type,const struct ib_gid_attr * attr)3083 static int config_gmv_table(struct hns_roce_dev *hr_dev,
3084 int gid_index, const union ib_gid *gid,
3085 enum hns_roce_sgid_type sgid_type,
3086 const struct ib_gid_attr *attr)
3087 {
3088 struct hns_roce_cmq_desc desc[2];
3089 struct hns_roce_cfg_gmv_tb_a *tb_a =
3090 (struct hns_roce_cfg_gmv_tb_a *)desc[0].data;
3091 struct hns_roce_cfg_gmv_tb_b *tb_b =
3092 (struct hns_roce_cfg_gmv_tb_b *)desc[1].data;
3093
3094 u16 vlan_id = VLAN_CFI_MASK;
3095 u8 mac[ETH_ALEN] = {};
3096 int ret;
3097
3098 if (gid) {
3099 ret = rdma_read_gid_l2_fields(attr, &vlan_id, mac);
3100 if (ret)
3101 return ret;
3102 }
3103
3104 hns_roce_cmq_setup_basic_desc(&desc[0], HNS_ROCE_OPC_CFG_GMV_TBL, false);
3105 desc[0].flag |= cpu_to_le16(HNS_ROCE_CMD_FLAG_NEXT);
3106
3107 hns_roce_cmq_setup_basic_desc(&desc[1], HNS_ROCE_OPC_CFG_GMV_TBL, false);
3108
3109 copy_gid(&tb_a->vf_sgid_l, gid);
3110
3111 hr_reg_write(tb_a, GMV_TB_A_VF_SGID_TYPE, sgid_type);
3112 hr_reg_write(tb_a, GMV_TB_A_VF_VLAN_EN, vlan_id < VLAN_CFI_MASK);
3113 hr_reg_write(tb_a, GMV_TB_A_VF_VLAN_ID, vlan_id);
3114
3115 tb_b->vf_smac_l = cpu_to_le32(*(u32 *)mac);
3116
3117 hr_reg_write(tb_b, GMV_TB_B_SMAC_H, *(u16 *)&mac[4]);
3118 hr_reg_write(tb_b, GMV_TB_B_SGID_IDX, gid_index);
3119
3120 return hns_roce_cmq_send(hr_dev, desc, 2);
3121 }
3122
hns_roce_v2_set_gid(struct hns_roce_dev * hr_dev,int gid_index,const union ib_gid * gid,const struct ib_gid_attr * attr)3123 static int hns_roce_v2_set_gid(struct hns_roce_dev *hr_dev, int gid_index,
3124 const union ib_gid *gid,
3125 const struct ib_gid_attr *attr)
3126 {
3127 enum hns_roce_sgid_type sgid_type = GID_TYPE_FLAG_ROCE_V1;
3128 int ret;
3129
3130 if (gid) {
3131 if (attr->gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) {
3132 if (ipv6_addr_v4mapped((void *)gid))
3133 sgid_type = GID_TYPE_FLAG_ROCE_V2_IPV4;
3134 else
3135 sgid_type = GID_TYPE_FLAG_ROCE_V2_IPV6;
3136 } else if (attr->gid_type == IB_GID_TYPE_ROCE) {
3137 sgid_type = GID_TYPE_FLAG_ROCE_V1;
3138 }
3139 }
3140
3141 if (hr_dev->pci_dev->revision >= PCI_REVISION_ID_HIP09)
3142 ret = config_gmv_table(hr_dev, gid_index, gid, sgid_type, attr);
3143 else
3144 ret = config_sgid_table(hr_dev, gid_index, gid, sgid_type);
3145
3146 if (ret)
3147 ibdev_err(&hr_dev->ib_dev, "failed to set gid, ret = %d!\n",
3148 ret);
3149
3150 return ret;
3151 }
3152
hns_roce_v2_set_mac(struct hns_roce_dev * hr_dev,u8 phy_port,const u8 * addr)3153 static int hns_roce_v2_set_mac(struct hns_roce_dev *hr_dev, u8 phy_port,
3154 const u8 *addr)
3155 {
3156 struct hns_roce_cmq_desc desc;
3157 struct hns_roce_cfg_smac_tb *smac_tb =
3158 (struct hns_roce_cfg_smac_tb *)desc.data;
3159 u16 reg_smac_h;
3160 u32 reg_smac_l;
3161
3162 hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_CFG_SMAC_TB, false);
3163
3164 reg_smac_l = *(u32 *)(&addr[0]);
3165 reg_smac_h = *(u16 *)(&addr[4]);
3166
3167 hr_reg_write(smac_tb, CFG_SMAC_TB_IDX, phy_port);
3168 hr_reg_write(smac_tb, CFG_SMAC_TB_VF_SMAC_H, reg_smac_h);
3169 smac_tb->vf_smac_l = cpu_to_le32(reg_smac_l);
3170
3171 return hns_roce_cmq_send(hr_dev, &desc, 1);
3172 }
3173
set_mtpt_pbl(struct hns_roce_dev * hr_dev,struct hns_roce_v2_mpt_entry * mpt_entry,struct hns_roce_mr * mr)3174 static int set_mtpt_pbl(struct hns_roce_dev *hr_dev,
3175 struct hns_roce_v2_mpt_entry *mpt_entry,
3176 struct hns_roce_mr *mr)
3177 {
3178 u64 pages[HNS_ROCE_V2_MAX_INNER_MTPT_NUM] = { 0 };
3179 struct ib_device *ibdev = &hr_dev->ib_dev;
3180 dma_addr_t pbl_ba;
3181 int i, count;
3182
3183 count = hns_roce_mtr_find(hr_dev, &mr->pbl_mtr, 0, pages,
3184 min_t(int, ARRAY_SIZE(pages), mr->npages),
3185 &pbl_ba);
3186 if (count < 1) {
3187 ibdev_err(ibdev, "failed to find PBL mtr, count = %d.\n",
3188 count);
3189 return -ENOBUFS;
3190 }
3191
3192 /* Aligned to the hardware address access unit */
3193 for (i = 0; i < count; i++)
3194 pages[i] >>= 6;
3195
3196 mpt_entry->pbl_size = cpu_to_le32(mr->npages);
3197 mpt_entry->pbl_ba_l = cpu_to_le32(pbl_ba >> 3);
3198 hr_reg_write(mpt_entry, MPT_PBL_BA_H, upper_32_bits(pbl_ba >> 3));
3199
3200 mpt_entry->pa0_l = cpu_to_le32(lower_32_bits(pages[0]));
3201 hr_reg_write(mpt_entry, MPT_PA0_H, upper_32_bits(pages[0]));
3202
3203 mpt_entry->pa1_l = cpu_to_le32(lower_32_bits(pages[1]));
3204 hr_reg_write(mpt_entry, MPT_PA1_H, upper_32_bits(pages[1]));
3205 hr_reg_write(mpt_entry, MPT_PBL_BUF_PG_SZ,
3206 to_hr_hw_page_shift(mr->pbl_mtr.hem_cfg.buf_pg_shift));
3207
3208 return 0;
3209 }
3210
hns_roce_v2_write_mtpt(struct hns_roce_dev * hr_dev,void * mb_buf,struct hns_roce_mr * mr)3211 static int hns_roce_v2_write_mtpt(struct hns_roce_dev *hr_dev,
3212 void *mb_buf, struct hns_roce_mr *mr)
3213 {
3214 struct hns_roce_v2_mpt_entry *mpt_entry;
3215
3216 mpt_entry = mb_buf;
3217 memset(mpt_entry, 0, sizeof(*mpt_entry));
3218
3219 hr_reg_write(mpt_entry, MPT_ST, V2_MPT_ST_VALID);
3220 hr_reg_write(mpt_entry, MPT_PD, mr->pd);
3221
3222 hr_reg_write_bool(mpt_entry, MPT_BIND_EN,
3223 mr->access & IB_ACCESS_MW_BIND);
3224 hr_reg_write_bool(mpt_entry, MPT_ATOMIC_EN,
3225 mr->access & IB_ACCESS_REMOTE_ATOMIC);
3226 hr_reg_write_bool(mpt_entry, MPT_RR_EN,
3227 mr->access & IB_ACCESS_REMOTE_READ);
3228 hr_reg_write_bool(mpt_entry, MPT_RW_EN,
3229 mr->access & IB_ACCESS_REMOTE_WRITE);
3230 hr_reg_write_bool(mpt_entry, MPT_LW_EN,
3231 mr->access & IB_ACCESS_LOCAL_WRITE);
3232
3233 mpt_entry->len_l = cpu_to_le32(lower_32_bits(mr->size));
3234 mpt_entry->len_h = cpu_to_le32(upper_32_bits(mr->size));
3235 mpt_entry->lkey = cpu_to_le32(mr->key);
3236 mpt_entry->va_l = cpu_to_le32(lower_32_bits(mr->iova));
3237 mpt_entry->va_h = cpu_to_le32(upper_32_bits(mr->iova));
3238
3239 if (mr->type != MR_TYPE_MR)
3240 hr_reg_enable(mpt_entry, MPT_PA);
3241
3242 if (mr->type == MR_TYPE_DMA)
3243 return 0;
3244
3245 if (mr->pbl_hop_num != HNS_ROCE_HOP_NUM_0)
3246 hr_reg_write(mpt_entry, MPT_PBL_HOP_NUM, mr->pbl_hop_num);
3247
3248 hr_reg_write(mpt_entry, MPT_PBL_BA_PG_SZ,
3249 to_hr_hw_page_shift(mr->pbl_mtr.hem_cfg.ba_pg_shift));
3250 hr_reg_enable(mpt_entry, MPT_INNER_PA_VLD);
3251
3252 return set_mtpt_pbl(hr_dev, mpt_entry, mr);
3253 }
3254
hns_roce_v2_rereg_write_mtpt(struct hns_roce_dev * hr_dev,struct hns_roce_mr * mr,int flags,void * mb_buf)3255 static int hns_roce_v2_rereg_write_mtpt(struct hns_roce_dev *hr_dev,
3256 struct hns_roce_mr *mr, int flags,
3257 void *mb_buf)
3258 {
3259 struct hns_roce_v2_mpt_entry *mpt_entry = mb_buf;
3260 u32 mr_access_flags = mr->access;
3261 int ret = 0;
3262
3263 hr_reg_write(mpt_entry, MPT_ST, V2_MPT_ST_VALID);
3264 hr_reg_write(mpt_entry, MPT_PD, mr->pd);
3265
3266 if (flags & IB_MR_REREG_ACCESS) {
3267 hr_reg_write(mpt_entry, MPT_BIND_EN,
3268 (mr_access_flags & IB_ACCESS_MW_BIND ? 1 : 0));
3269 hr_reg_write(mpt_entry, MPT_ATOMIC_EN,
3270 mr_access_flags & IB_ACCESS_REMOTE_ATOMIC ? 1 : 0);
3271 hr_reg_write(mpt_entry, MPT_RR_EN,
3272 mr_access_flags & IB_ACCESS_REMOTE_READ ? 1 : 0);
3273 hr_reg_write(mpt_entry, MPT_RW_EN,
3274 mr_access_flags & IB_ACCESS_REMOTE_WRITE ? 1 : 0);
3275 hr_reg_write(mpt_entry, MPT_LW_EN,
3276 mr_access_flags & IB_ACCESS_LOCAL_WRITE ? 1 : 0);
3277 }
3278
3279 if (flags & IB_MR_REREG_TRANS) {
3280 mpt_entry->va_l = cpu_to_le32(lower_32_bits(mr->iova));
3281 mpt_entry->va_h = cpu_to_le32(upper_32_bits(mr->iova));
3282 mpt_entry->len_l = cpu_to_le32(lower_32_bits(mr->size));
3283 mpt_entry->len_h = cpu_to_le32(upper_32_bits(mr->size));
3284
3285 ret = set_mtpt_pbl(hr_dev, mpt_entry, mr);
3286 }
3287
3288 return ret;
3289 }
3290
hns_roce_v2_frmr_write_mtpt(struct hns_roce_dev * hr_dev,void * mb_buf,struct hns_roce_mr * mr)3291 static int hns_roce_v2_frmr_write_mtpt(struct hns_roce_dev *hr_dev,
3292 void *mb_buf, struct hns_roce_mr *mr)
3293 {
3294 struct ib_device *ibdev = &hr_dev->ib_dev;
3295 struct hns_roce_v2_mpt_entry *mpt_entry;
3296 dma_addr_t pbl_ba = 0;
3297
3298 mpt_entry = mb_buf;
3299 memset(mpt_entry, 0, sizeof(*mpt_entry));
3300
3301 if (hns_roce_mtr_find(hr_dev, &mr->pbl_mtr, 0, NULL, 0, &pbl_ba) < 0) {
3302 ibdev_err(ibdev, "failed to find frmr mtr.\n");
3303 return -ENOBUFS;
3304 }
3305
3306 hr_reg_write(mpt_entry, MPT_ST, V2_MPT_ST_FREE);
3307 hr_reg_write(mpt_entry, MPT_PD, mr->pd);
3308
3309 hr_reg_enable(mpt_entry, MPT_RA_EN);
3310 hr_reg_enable(mpt_entry, MPT_R_INV_EN);
3311
3312 hr_reg_enable(mpt_entry, MPT_FRE);
3313 hr_reg_clear(mpt_entry, MPT_MR_MW);
3314 hr_reg_enable(mpt_entry, MPT_BPD);
3315 hr_reg_clear(mpt_entry, MPT_PA);
3316
3317 hr_reg_write(mpt_entry, MPT_PBL_HOP_NUM, 1);
3318 hr_reg_write(mpt_entry, MPT_PBL_BA_PG_SZ,
3319 to_hr_hw_page_shift(mr->pbl_mtr.hem_cfg.ba_pg_shift));
3320 hr_reg_write(mpt_entry, MPT_PBL_BUF_PG_SZ,
3321 to_hr_hw_page_shift(mr->pbl_mtr.hem_cfg.buf_pg_shift));
3322
3323 mpt_entry->pbl_size = cpu_to_le32(mr->npages);
3324
3325 mpt_entry->pbl_ba_l = cpu_to_le32(lower_32_bits(pbl_ba >> 3));
3326 hr_reg_write(mpt_entry, MPT_PBL_BA_H, upper_32_bits(pbl_ba >> 3));
3327
3328 return 0;
3329 }
3330
hns_roce_v2_mw_write_mtpt(void * mb_buf,struct hns_roce_mw * mw)3331 static int hns_roce_v2_mw_write_mtpt(void *mb_buf, struct hns_roce_mw *mw)
3332 {
3333 struct hns_roce_v2_mpt_entry *mpt_entry;
3334
3335 mpt_entry = mb_buf;
3336 memset(mpt_entry, 0, sizeof(*mpt_entry));
3337
3338 hr_reg_write(mpt_entry, MPT_ST, V2_MPT_ST_FREE);
3339 hr_reg_write(mpt_entry, MPT_PD, mw->pdn);
3340
3341 hr_reg_enable(mpt_entry, MPT_R_INV_EN);
3342 hr_reg_enable(mpt_entry, MPT_LW_EN);
3343
3344 hr_reg_enable(mpt_entry, MPT_MR_MW);
3345 hr_reg_enable(mpt_entry, MPT_BPD);
3346 hr_reg_clear(mpt_entry, MPT_PA);
3347 hr_reg_write(mpt_entry, MPT_BQP,
3348 mw->ibmw.type == IB_MW_TYPE_1 ? 0 : 1);
3349
3350 mpt_entry->lkey = cpu_to_le32(mw->rkey);
3351
3352 hr_reg_write(mpt_entry, MPT_PBL_HOP_NUM,
3353 mw->pbl_hop_num == HNS_ROCE_HOP_NUM_0 ? 0 :
3354 mw->pbl_hop_num);
3355 hr_reg_write(mpt_entry, MPT_PBL_BA_PG_SZ,
3356 mw->pbl_ba_pg_sz + PG_SHIFT_OFFSET);
3357 hr_reg_write(mpt_entry, MPT_PBL_BUF_PG_SZ,
3358 mw->pbl_buf_pg_sz + PG_SHIFT_OFFSET);
3359
3360 return 0;
3361 }
3362
free_mr_post_send_lp_wqe(struct hns_roce_qp * hr_qp)3363 static int free_mr_post_send_lp_wqe(struct hns_roce_qp *hr_qp)
3364 {
3365 struct hns_roce_dev *hr_dev = to_hr_dev(hr_qp->ibqp.device);
3366 struct ib_device *ibdev = &hr_dev->ib_dev;
3367 const struct ib_send_wr *bad_wr;
3368 struct ib_rdma_wr rdma_wr = {};
3369 struct ib_send_wr *send_wr;
3370 int ret;
3371
3372 send_wr = &rdma_wr.wr;
3373 send_wr->opcode = IB_WR_RDMA_WRITE;
3374
3375 ret = hns_roce_v2_post_send(&hr_qp->ibqp, send_wr, &bad_wr);
3376 if (ret) {
3377 ibdev_err(ibdev, "failed to post wqe for free mr, ret = %d.\n",
3378 ret);
3379 return ret;
3380 }
3381
3382 return 0;
3383 }
3384
3385 static int hns_roce_v2_poll_cq(struct ib_cq *ibcq, int num_entries,
3386 struct ib_wc *wc);
3387
free_mr_send_cmd_to_hw(struct hns_roce_dev * hr_dev)3388 static void free_mr_send_cmd_to_hw(struct hns_roce_dev *hr_dev)
3389 {
3390 struct hns_roce_v2_priv *priv = hr_dev->priv;
3391 struct hns_roce_v2_free_mr *free_mr = &priv->free_mr;
3392 struct ib_wc wc[ARRAY_SIZE(free_mr->rsv_qp)];
3393 struct ib_device *ibdev = &hr_dev->ib_dev;
3394 struct hns_roce_qp *hr_qp;
3395 unsigned long end;
3396 int cqe_cnt = 0;
3397 int npolled;
3398 int ret;
3399 int i;
3400
3401 /*
3402 * If the device initialization is not complete or in the uninstall
3403 * process, then there is no need to execute free mr.
3404 */
3405 if (priv->handle->rinfo.reset_state == HNS_ROCE_STATE_RST_INIT ||
3406 priv->handle->rinfo.instance_state == HNS_ROCE_STATE_INIT ||
3407 hr_dev->state == HNS_ROCE_DEVICE_STATE_UNINIT)
3408 return;
3409
3410 mutex_lock(&free_mr->mutex);
3411
3412 for (i = 0; i < ARRAY_SIZE(free_mr->rsv_qp); i++) {
3413 hr_qp = free_mr->rsv_qp[i];
3414
3415 ret = free_mr_post_send_lp_wqe(hr_qp);
3416 if (ret) {
3417 ibdev_err(ibdev,
3418 "failed to send wqe (qp:0x%lx) for free mr, ret = %d.\n",
3419 hr_qp->qpn, ret);
3420 break;
3421 }
3422
3423 cqe_cnt++;
3424 }
3425
3426 end = msecs_to_jiffies(HNS_ROCE_V2_FREE_MR_TIMEOUT) + jiffies;
3427 while (cqe_cnt) {
3428 npolled = hns_roce_v2_poll_cq(&free_mr->rsv_cq->ib_cq, cqe_cnt, wc);
3429 if (npolled < 0) {
3430 ibdev_err(ibdev,
3431 "failed to poll cqe for free mr, remain %d cqe.\n",
3432 cqe_cnt);
3433 goto out;
3434 }
3435
3436 if (time_after(jiffies, end)) {
3437 ibdev_err(ibdev,
3438 "failed to poll cqe for free mr and timeout, remain %d cqe.\n",
3439 cqe_cnt);
3440 goto out;
3441 }
3442 cqe_cnt -= npolled;
3443 }
3444
3445 out:
3446 mutex_unlock(&free_mr->mutex);
3447 }
3448
hns_roce_v2_dereg_mr(struct hns_roce_dev * hr_dev)3449 static void hns_roce_v2_dereg_mr(struct hns_roce_dev *hr_dev)
3450 {
3451 if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08)
3452 free_mr_send_cmd_to_hw(hr_dev);
3453 }
3454
get_cqe_v2(struct hns_roce_cq * hr_cq,int n)3455 static void *get_cqe_v2(struct hns_roce_cq *hr_cq, int n)
3456 {
3457 return hns_roce_buf_offset(hr_cq->mtr.kmem, n * hr_cq->cqe_size);
3458 }
3459
get_sw_cqe_v2(struct hns_roce_cq * hr_cq,unsigned int n)3460 static void *get_sw_cqe_v2(struct hns_roce_cq *hr_cq, unsigned int n)
3461 {
3462 struct hns_roce_v2_cqe *cqe = get_cqe_v2(hr_cq, n & hr_cq->ib_cq.cqe);
3463
3464 /* Get cqe when Owner bit is Conversely with the MSB of cons_idx */
3465 return (hr_reg_read(cqe, CQE_OWNER) ^ !!(n & hr_cq->cq_depth)) ? cqe :
3466 NULL;
3467 }
3468
update_cq_db(struct hns_roce_dev * hr_dev,struct hns_roce_cq * hr_cq)3469 static inline void update_cq_db(struct hns_roce_dev *hr_dev,
3470 struct hns_roce_cq *hr_cq)
3471 {
3472 if (likely(hr_cq->flags & HNS_ROCE_CQ_FLAG_RECORD_DB)) {
3473 *hr_cq->set_ci_db = hr_cq->cons_index & V2_CQ_DB_CONS_IDX_M;
3474 } else {
3475 struct hns_roce_v2_db cq_db = {};
3476
3477 hr_reg_write(&cq_db, DB_TAG, hr_cq->cqn);
3478 hr_reg_write(&cq_db, DB_CMD, HNS_ROCE_V2_CQ_DB);
3479 hr_reg_write(&cq_db, DB_CQ_CI, hr_cq->cons_index);
3480 hr_reg_write(&cq_db, DB_CQ_CMD_SN, 1);
3481
3482 hns_roce_write64(hr_dev, (__le32 *)&cq_db, hr_cq->db_reg);
3483 }
3484 }
3485
__hns_roce_v2_cq_clean(struct hns_roce_cq * hr_cq,u32 qpn,struct hns_roce_srq * srq)3486 static void __hns_roce_v2_cq_clean(struct hns_roce_cq *hr_cq, u32 qpn,
3487 struct hns_roce_srq *srq)
3488 {
3489 struct hns_roce_dev *hr_dev = to_hr_dev(hr_cq->ib_cq.device);
3490 struct hns_roce_v2_cqe *cqe, *dest;
3491 u32 prod_index;
3492 int nfreed = 0;
3493 int wqe_index;
3494 u8 owner_bit;
3495
3496 for (prod_index = hr_cq->cons_index; get_sw_cqe_v2(hr_cq, prod_index);
3497 ++prod_index) {
3498 if (prod_index > hr_cq->cons_index + hr_cq->ib_cq.cqe)
3499 break;
3500 }
3501
3502 /*
3503 * Now backwards through the CQ, removing CQ entries
3504 * that match our QP by overwriting them with next entries.
3505 */
3506 while ((int) --prod_index - (int) hr_cq->cons_index >= 0) {
3507 cqe = get_cqe_v2(hr_cq, prod_index & hr_cq->ib_cq.cqe);
3508 if (hr_reg_read(cqe, CQE_LCL_QPN) == qpn) {
3509 if (srq && hr_reg_read(cqe, CQE_S_R)) {
3510 wqe_index = hr_reg_read(cqe, CQE_WQE_IDX);
3511 hns_roce_free_srq_wqe(srq, wqe_index);
3512 }
3513 ++nfreed;
3514 } else if (nfreed) {
3515 dest = get_cqe_v2(hr_cq, (prod_index + nfreed) &
3516 hr_cq->ib_cq.cqe);
3517 owner_bit = hr_reg_read(dest, CQE_OWNER);
3518 memcpy(dest, cqe, hr_cq->cqe_size);
3519 hr_reg_write(dest, CQE_OWNER, owner_bit);
3520 }
3521 }
3522
3523 if (nfreed) {
3524 hr_cq->cons_index += nfreed;
3525 update_cq_db(hr_dev, hr_cq);
3526 }
3527 }
3528
hns_roce_v2_cq_clean(struct hns_roce_cq * hr_cq,u32 qpn,struct hns_roce_srq * srq)3529 static void hns_roce_v2_cq_clean(struct hns_roce_cq *hr_cq, u32 qpn,
3530 struct hns_roce_srq *srq)
3531 {
3532 spin_lock_irq(&hr_cq->lock);
3533 __hns_roce_v2_cq_clean(hr_cq, qpn, srq);
3534 spin_unlock_irq(&hr_cq->lock);
3535 }
3536
hns_roce_v2_write_cqc(struct hns_roce_dev * hr_dev,struct hns_roce_cq * hr_cq,void * mb_buf,u64 * mtts,dma_addr_t dma_handle)3537 static void hns_roce_v2_write_cqc(struct hns_roce_dev *hr_dev,
3538 struct hns_roce_cq *hr_cq, void *mb_buf,
3539 u64 *mtts, dma_addr_t dma_handle)
3540 {
3541 struct hns_roce_v2_cq_context *cq_context;
3542
3543 cq_context = mb_buf;
3544 memset(cq_context, 0, sizeof(*cq_context));
3545
3546 hr_reg_write(cq_context, CQC_CQ_ST, V2_CQ_STATE_VALID);
3547 hr_reg_write(cq_context, CQC_ARM_ST, NO_ARMED);
3548 hr_reg_write(cq_context, CQC_SHIFT, ilog2(hr_cq->cq_depth));
3549 hr_reg_write(cq_context, CQC_CEQN, hr_cq->vector);
3550 hr_reg_write(cq_context, CQC_CQN, hr_cq->cqn);
3551
3552 if (hr_cq->cqe_size == HNS_ROCE_V3_CQE_SIZE)
3553 hr_reg_write(cq_context, CQC_CQE_SIZE, CQE_SIZE_64B);
3554
3555 if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_STASH)
3556 hr_reg_enable(cq_context, CQC_STASH);
3557
3558 hr_reg_write(cq_context, CQC_CQE_CUR_BLK_ADDR_L,
3559 to_hr_hw_page_addr(mtts[0]));
3560 hr_reg_write(cq_context, CQC_CQE_CUR_BLK_ADDR_H,
3561 upper_32_bits(to_hr_hw_page_addr(mtts[0])));
3562 hr_reg_write(cq_context, CQC_CQE_HOP_NUM, hr_dev->caps.cqe_hop_num ==
3563 HNS_ROCE_HOP_NUM_0 ? 0 : hr_dev->caps.cqe_hop_num);
3564 hr_reg_write(cq_context, CQC_CQE_NEX_BLK_ADDR_L,
3565 to_hr_hw_page_addr(mtts[1]));
3566 hr_reg_write(cq_context, CQC_CQE_NEX_BLK_ADDR_H,
3567 upper_32_bits(to_hr_hw_page_addr(mtts[1])));
3568 hr_reg_write(cq_context, CQC_CQE_BAR_PG_SZ,
3569 to_hr_hw_page_shift(hr_cq->mtr.hem_cfg.ba_pg_shift));
3570 hr_reg_write(cq_context, CQC_CQE_BUF_PG_SZ,
3571 to_hr_hw_page_shift(hr_cq->mtr.hem_cfg.buf_pg_shift));
3572 hr_reg_write(cq_context, CQC_CQE_BA_L, dma_handle >> 3);
3573 hr_reg_write(cq_context, CQC_CQE_BA_H, (dma_handle >> (32 + 3)));
3574 hr_reg_write_bool(cq_context, CQC_DB_RECORD_EN,
3575 hr_cq->flags & HNS_ROCE_CQ_FLAG_RECORD_DB);
3576 hr_reg_write(cq_context, CQC_CQE_DB_RECORD_ADDR_L,
3577 ((u32)hr_cq->db.dma) >> 1);
3578 hr_reg_write(cq_context, CQC_CQE_DB_RECORD_ADDR_H,
3579 hr_cq->db.dma >> 32);
3580 hr_reg_write(cq_context, CQC_CQ_MAX_CNT,
3581 HNS_ROCE_V2_CQ_DEFAULT_BURST_NUM);
3582 hr_reg_write(cq_context, CQC_CQ_PERIOD,
3583 HNS_ROCE_V2_CQ_DEFAULT_INTERVAL);
3584 }
3585
hns_roce_v2_req_notify_cq(struct ib_cq * ibcq,enum ib_cq_notify_flags flags)3586 static int hns_roce_v2_req_notify_cq(struct ib_cq *ibcq,
3587 enum ib_cq_notify_flags flags)
3588 {
3589 struct hns_roce_dev *hr_dev = to_hr_dev(ibcq->device);
3590 struct hns_roce_cq *hr_cq = to_hr_cq(ibcq);
3591 struct hns_roce_v2_db cq_db = {};
3592 u32 notify_flag;
3593
3594 /*
3595 * flags = 0, then notify_flag : next
3596 * flags = 1, then notify flag : solocited
3597 */
3598 notify_flag = (flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED ?
3599 V2_CQ_DB_REQ_NOT : V2_CQ_DB_REQ_NOT_SOL;
3600
3601 hr_reg_write(&cq_db, DB_TAG, hr_cq->cqn);
3602 hr_reg_write(&cq_db, DB_CMD, HNS_ROCE_V2_CQ_DB_NOTIFY);
3603 hr_reg_write(&cq_db, DB_CQ_CI, hr_cq->cons_index);
3604 hr_reg_write(&cq_db, DB_CQ_CMD_SN, hr_cq->arm_sn);
3605 hr_reg_write(&cq_db, DB_CQ_NOTIFY, notify_flag);
3606
3607 hns_roce_write64(hr_dev, (__le32 *)&cq_db, hr_cq->db_reg);
3608
3609 return 0;
3610 }
3611
sw_comp(struct hns_roce_qp * hr_qp,struct hns_roce_wq * wq,int num_entries,struct ib_wc * wc)3612 static int sw_comp(struct hns_roce_qp *hr_qp, struct hns_roce_wq *wq,
3613 int num_entries, struct ib_wc *wc)
3614 {
3615 unsigned int left;
3616 int npolled = 0;
3617
3618 left = wq->head - wq->tail;
3619 if (left == 0)
3620 return 0;
3621
3622 left = min_t(unsigned int, (unsigned int)num_entries, left);
3623 while (npolled < left) {
3624 wc->wr_id = wq->wrid[wq->tail & (wq->wqe_cnt - 1)];
3625 wc->status = IB_WC_WR_FLUSH_ERR;
3626 wc->vendor_err = 0;
3627 wc->qp = &hr_qp->ibqp;
3628
3629 wq->tail++;
3630 wc++;
3631 npolled++;
3632 }
3633
3634 return npolled;
3635 }
3636
hns_roce_v2_sw_poll_cq(struct hns_roce_cq * hr_cq,int num_entries,struct ib_wc * wc)3637 static int hns_roce_v2_sw_poll_cq(struct hns_roce_cq *hr_cq, int num_entries,
3638 struct ib_wc *wc)
3639 {
3640 struct hns_roce_qp *hr_qp;
3641 int npolled = 0;
3642
3643 list_for_each_entry(hr_qp, &hr_cq->sq_list, sq_node) {
3644 npolled += sw_comp(hr_qp, &hr_qp->sq,
3645 num_entries - npolled, wc + npolled);
3646 if (npolled >= num_entries)
3647 goto out;
3648 }
3649
3650 list_for_each_entry(hr_qp, &hr_cq->rq_list, rq_node) {
3651 npolled += sw_comp(hr_qp, &hr_qp->rq,
3652 num_entries - npolled, wc + npolled);
3653 if (npolled >= num_entries)
3654 goto out;
3655 }
3656
3657 out:
3658 return npolled;
3659 }
3660
get_cqe_status(struct hns_roce_dev * hr_dev,struct hns_roce_qp * qp,struct hns_roce_cq * cq,struct hns_roce_v2_cqe * cqe,struct ib_wc * wc)3661 static void get_cqe_status(struct hns_roce_dev *hr_dev, struct hns_roce_qp *qp,
3662 struct hns_roce_cq *cq, struct hns_roce_v2_cqe *cqe,
3663 struct ib_wc *wc)
3664 {
3665 static const struct {
3666 u32 cqe_status;
3667 enum ib_wc_status wc_status;
3668 } map[] = {
3669 { HNS_ROCE_CQE_V2_SUCCESS, IB_WC_SUCCESS },
3670 { HNS_ROCE_CQE_V2_LOCAL_LENGTH_ERR, IB_WC_LOC_LEN_ERR },
3671 { HNS_ROCE_CQE_V2_LOCAL_QP_OP_ERR, IB_WC_LOC_QP_OP_ERR },
3672 { HNS_ROCE_CQE_V2_LOCAL_PROT_ERR, IB_WC_LOC_PROT_ERR },
3673 { HNS_ROCE_CQE_V2_WR_FLUSH_ERR, IB_WC_WR_FLUSH_ERR },
3674 { HNS_ROCE_CQE_V2_MW_BIND_ERR, IB_WC_MW_BIND_ERR },
3675 { HNS_ROCE_CQE_V2_BAD_RESP_ERR, IB_WC_BAD_RESP_ERR },
3676 { HNS_ROCE_CQE_V2_LOCAL_ACCESS_ERR, IB_WC_LOC_ACCESS_ERR },
3677 { HNS_ROCE_CQE_V2_REMOTE_INVAL_REQ_ERR, IB_WC_REM_INV_REQ_ERR },
3678 { HNS_ROCE_CQE_V2_REMOTE_ACCESS_ERR, IB_WC_REM_ACCESS_ERR },
3679 { HNS_ROCE_CQE_V2_REMOTE_OP_ERR, IB_WC_REM_OP_ERR },
3680 { HNS_ROCE_CQE_V2_TRANSPORT_RETRY_EXC_ERR,
3681 IB_WC_RETRY_EXC_ERR },
3682 { HNS_ROCE_CQE_V2_RNR_RETRY_EXC_ERR, IB_WC_RNR_RETRY_EXC_ERR },
3683 { HNS_ROCE_CQE_V2_REMOTE_ABORT_ERR, IB_WC_REM_ABORT_ERR },
3684 { HNS_ROCE_CQE_V2_GENERAL_ERR, IB_WC_GENERAL_ERR}
3685 };
3686
3687 u32 cqe_status = hr_reg_read(cqe, CQE_STATUS);
3688 int i;
3689
3690 wc->status = IB_WC_GENERAL_ERR;
3691 for (i = 0; i < ARRAY_SIZE(map); i++)
3692 if (cqe_status == map[i].cqe_status) {
3693 wc->status = map[i].wc_status;
3694 break;
3695 }
3696
3697 if (likely(wc->status == IB_WC_SUCCESS ||
3698 wc->status == IB_WC_WR_FLUSH_ERR))
3699 return;
3700
3701 ibdev_err_ratelimited(&hr_dev->ib_dev, "error cqe status 0x%x:\n",
3702 cqe_status);
3703 print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_NONE, 16, 4, cqe,
3704 cq->cqe_size, false);
3705 wc->vendor_err = hr_reg_read(cqe, CQE_SUB_STATUS);
3706
3707 /*
3708 * For hns ROCEE, GENERAL_ERR is an error type that is not defined in
3709 * the standard protocol, the driver must ignore it and needn't to set
3710 * the QP to an error state.
3711 */
3712 if (cqe_status == HNS_ROCE_CQE_V2_GENERAL_ERR)
3713 return;
3714
3715 flush_cqe(hr_dev, qp);
3716 }
3717
get_cur_qp(struct hns_roce_cq * hr_cq,struct hns_roce_v2_cqe * cqe,struct hns_roce_qp ** cur_qp)3718 static int get_cur_qp(struct hns_roce_cq *hr_cq, struct hns_roce_v2_cqe *cqe,
3719 struct hns_roce_qp **cur_qp)
3720 {
3721 struct hns_roce_dev *hr_dev = to_hr_dev(hr_cq->ib_cq.device);
3722 struct hns_roce_qp *hr_qp = *cur_qp;
3723 u32 qpn;
3724
3725 qpn = hr_reg_read(cqe, CQE_LCL_QPN);
3726
3727 if (!hr_qp || qpn != hr_qp->qpn) {
3728 hr_qp = __hns_roce_qp_lookup(hr_dev, qpn);
3729 if (unlikely(!hr_qp)) {
3730 ibdev_err(&hr_dev->ib_dev,
3731 "CQ %06lx with entry for unknown QPN %06x\n",
3732 hr_cq->cqn, qpn);
3733 return -EINVAL;
3734 }
3735 *cur_qp = hr_qp;
3736 }
3737
3738 return 0;
3739 }
3740
3741 /*
3742 * mapped-value = 1 + real-value
3743 * The ib wc opcode's real value is start from 0, In order to distinguish
3744 * between initialized and uninitialized map values, we plus 1 to the actual
3745 * value when defining the mapping, so that the validity can be identified by
3746 * checking whether the mapped value is greater than 0.
3747 */
3748 #define HR_WC_OP_MAP(hr_key, ib_key) \
3749 [HNS_ROCE_V2_WQE_OP_ ## hr_key] = 1 + IB_WC_ ## ib_key
3750
3751 static const u32 wc_send_op_map[] = {
3752 HR_WC_OP_MAP(SEND, SEND),
3753 HR_WC_OP_MAP(SEND_WITH_INV, SEND),
3754 HR_WC_OP_MAP(SEND_WITH_IMM, SEND),
3755 HR_WC_OP_MAP(RDMA_READ, RDMA_READ),
3756 HR_WC_OP_MAP(RDMA_WRITE, RDMA_WRITE),
3757 HR_WC_OP_MAP(RDMA_WRITE_WITH_IMM, RDMA_WRITE),
3758 HR_WC_OP_MAP(ATOM_CMP_AND_SWAP, COMP_SWAP),
3759 HR_WC_OP_MAP(ATOM_FETCH_AND_ADD, FETCH_ADD),
3760 HR_WC_OP_MAP(ATOM_MSK_CMP_AND_SWAP, MASKED_COMP_SWAP),
3761 HR_WC_OP_MAP(ATOM_MSK_FETCH_AND_ADD, MASKED_FETCH_ADD),
3762 HR_WC_OP_MAP(FAST_REG_PMR, REG_MR),
3763 HR_WC_OP_MAP(BIND_MW, REG_MR),
3764 };
3765
to_ib_wc_send_op(u32 hr_opcode)3766 static int to_ib_wc_send_op(u32 hr_opcode)
3767 {
3768 if (hr_opcode >= ARRAY_SIZE(wc_send_op_map))
3769 return -EINVAL;
3770
3771 return wc_send_op_map[hr_opcode] ? wc_send_op_map[hr_opcode] - 1 :
3772 -EINVAL;
3773 }
3774
3775 static const u32 wc_recv_op_map[] = {
3776 HR_WC_OP_MAP(RDMA_WRITE_WITH_IMM, WITH_IMM),
3777 HR_WC_OP_MAP(SEND, RECV),
3778 HR_WC_OP_MAP(SEND_WITH_IMM, WITH_IMM),
3779 HR_WC_OP_MAP(SEND_WITH_INV, RECV),
3780 };
3781
to_ib_wc_recv_op(u32 hr_opcode)3782 static int to_ib_wc_recv_op(u32 hr_opcode)
3783 {
3784 if (hr_opcode >= ARRAY_SIZE(wc_recv_op_map))
3785 return -EINVAL;
3786
3787 return wc_recv_op_map[hr_opcode] ? wc_recv_op_map[hr_opcode] - 1 :
3788 -EINVAL;
3789 }
3790
fill_send_wc(struct ib_wc * wc,struct hns_roce_v2_cqe * cqe)3791 static void fill_send_wc(struct ib_wc *wc, struct hns_roce_v2_cqe *cqe)
3792 {
3793 u32 hr_opcode;
3794 int ib_opcode;
3795
3796 wc->wc_flags = 0;
3797
3798 hr_opcode = hr_reg_read(cqe, CQE_OPCODE);
3799 switch (hr_opcode) {
3800 case HNS_ROCE_V2_WQE_OP_RDMA_READ:
3801 wc->byte_len = le32_to_cpu(cqe->byte_cnt);
3802 break;
3803 case HNS_ROCE_V2_WQE_OP_SEND_WITH_IMM:
3804 case HNS_ROCE_V2_WQE_OP_RDMA_WRITE_WITH_IMM:
3805 wc->wc_flags |= IB_WC_WITH_IMM;
3806 break;
3807 case HNS_ROCE_V2_WQE_OP_ATOM_CMP_AND_SWAP:
3808 case HNS_ROCE_V2_WQE_OP_ATOM_FETCH_AND_ADD:
3809 case HNS_ROCE_V2_WQE_OP_ATOM_MSK_CMP_AND_SWAP:
3810 case HNS_ROCE_V2_WQE_OP_ATOM_MSK_FETCH_AND_ADD:
3811 wc->byte_len = 8;
3812 break;
3813 default:
3814 break;
3815 }
3816
3817 ib_opcode = to_ib_wc_send_op(hr_opcode);
3818 if (ib_opcode < 0)
3819 wc->status = IB_WC_GENERAL_ERR;
3820 else
3821 wc->opcode = ib_opcode;
3822 }
3823
fill_recv_wc(struct ib_wc * wc,struct hns_roce_v2_cqe * cqe)3824 static int fill_recv_wc(struct ib_wc *wc, struct hns_roce_v2_cqe *cqe)
3825 {
3826 u32 hr_opcode;
3827 int ib_opcode;
3828
3829 wc->byte_len = le32_to_cpu(cqe->byte_cnt);
3830
3831 hr_opcode = hr_reg_read(cqe, CQE_OPCODE);
3832 switch (hr_opcode) {
3833 case HNS_ROCE_V2_OPCODE_RDMA_WRITE_IMM:
3834 case HNS_ROCE_V2_OPCODE_SEND_WITH_IMM:
3835 wc->wc_flags = IB_WC_WITH_IMM;
3836 wc->ex.imm_data = cpu_to_be32(le32_to_cpu(cqe->immtdata));
3837 break;
3838 case HNS_ROCE_V2_OPCODE_SEND_WITH_INV:
3839 wc->wc_flags = IB_WC_WITH_INVALIDATE;
3840 wc->ex.invalidate_rkey = le32_to_cpu(cqe->rkey);
3841 break;
3842 default:
3843 wc->wc_flags = 0;
3844 }
3845
3846 ib_opcode = to_ib_wc_recv_op(hr_opcode);
3847 if (ib_opcode < 0)
3848 wc->status = IB_WC_GENERAL_ERR;
3849 else
3850 wc->opcode = ib_opcode;
3851
3852 wc->sl = hr_reg_read(cqe, CQE_SL);
3853 wc->src_qp = hr_reg_read(cqe, CQE_RMT_QPN);
3854 wc->slid = 0;
3855 wc->wc_flags |= hr_reg_read(cqe, CQE_GRH) ? IB_WC_GRH : 0;
3856 wc->port_num = hr_reg_read(cqe, CQE_PORTN);
3857 wc->pkey_index = 0;
3858
3859 if (hr_reg_read(cqe, CQE_VID_VLD)) {
3860 wc->vlan_id = hr_reg_read(cqe, CQE_VID);
3861 wc->wc_flags |= IB_WC_WITH_VLAN;
3862 } else {
3863 wc->vlan_id = 0xffff;
3864 }
3865
3866 wc->network_hdr_type = hr_reg_read(cqe, CQE_PORT_TYPE);
3867
3868 return 0;
3869 }
3870
hns_roce_v2_poll_one(struct hns_roce_cq * hr_cq,struct hns_roce_qp ** cur_qp,struct ib_wc * wc)3871 static int hns_roce_v2_poll_one(struct hns_roce_cq *hr_cq,
3872 struct hns_roce_qp **cur_qp, struct ib_wc *wc)
3873 {
3874 struct hns_roce_dev *hr_dev = to_hr_dev(hr_cq->ib_cq.device);
3875 struct hns_roce_qp *qp = *cur_qp;
3876 struct hns_roce_srq *srq = NULL;
3877 struct hns_roce_v2_cqe *cqe;
3878 struct hns_roce_wq *wq;
3879 int is_send;
3880 u16 wqe_idx;
3881 int ret;
3882
3883 cqe = get_sw_cqe_v2(hr_cq, hr_cq->cons_index);
3884 if (!cqe)
3885 return -EAGAIN;
3886
3887 ++hr_cq->cons_index;
3888 /* Memory barrier */
3889 rmb();
3890
3891 ret = get_cur_qp(hr_cq, cqe, &qp);
3892 if (ret)
3893 return ret;
3894
3895 wc->qp = &qp->ibqp;
3896 wc->vendor_err = 0;
3897
3898 wqe_idx = hr_reg_read(cqe, CQE_WQE_IDX);
3899
3900 is_send = !hr_reg_read(cqe, CQE_S_R);
3901 if (is_send) {
3902 wq = &qp->sq;
3903
3904 /* If sg_signal_bit is set, tail pointer will be updated to
3905 * the WQE corresponding to the current CQE.
3906 */
3907 if (qp->sq_signal_bits)
3908 wq->tail += (wqe_idx - (u16)wq->tail) &
3909 (wq->wqe_cnt - 1);
3910
3911 wc->wr_id = wq->wrid[wq->tail & (wq->wqe_cnt - 1)];
3912 ++wq->tail;
3913
3914 fill_send_wc(wc, cqe);
3915 } else {
3916 if (qp->ibqp.srq) {
3917 srq = to_hr_srq(qp->ibqp.srq);
3918 wc->wr_id = srq->wrid[wqe_idx];
3919 hns_roce_free_srq_wqe(srq, wqe_idx);
3920 } else {
3921 wq = &qp->rq;
3922 wc->wr_id = wq->wrid[wq->tail & (wq->wqe_cnt - 1)];
3923 ++wq->tail;
3924 }
3925
3926 ret = fill_recv_wc(wc, cqe);
3927 }
3928
3929 get_cqe_status(hr_dev, qp, hr_cq, cqe, wc);
3930 if (unlikely(wc->status != IB_WC_SUCCESS))
3931 return 0;
3932
3933 return ret;
3934 }
3935
hns_roce_v2_poll_cq(struct ib_cq * ibcq,int num_entries,struct ib_wc * wc)3936 static int hns_roce_v2_poll_cq(struct ib_cq *ibcq, int num_entries,
3937 struct ib_wc *wc)
3938 {
3939 struct hns_roce_dev *hr_dev = to_hr_dev(ibcq->device);
3940 struct hns_roce_cq *hr_cq = to_hr_cq(ibcq);
3941 struct hns_roce_qp *cur_qp = NULL;
3942 unsigned long flags;
3943 int npolled;
3944
3945 spin_lock_irqsave(&hr_cq->lock, flags);
3946
3947 /*
3948 * When the device starts to reset, the state is RST_DOWN. At this time,
3949 * there may still be some valid CQEs in the hardware that are not
3950 * polled. Therefore, it is not allowed to switch to the software mode
3951 * immediately. When the state changes to UNINIT, CQE no longer exists
3952 * in the hardware, and then switch to software mode.
3953 */
3954 if (hr_dev->state == HNS_ROCE_DEVICE_STATE_UNINIT) {
3955 npolled = hns_roce_v2_sw_poll_cq(hr_cq, num_entries, wc);
3956 goto out;
3957 }
3958
3959 for (npolled = 0; npolled < num_entries; ++npolled) {
3960 if (hns_roce_v2_poll_one(hr_cq, &cur_qp, wc + npolled))
3961 break;
3962 }
3963
3964 if (npolled)
3965 update_cq_db(hr_dev, hr_cq);
3966
3967 out:
3968 spin_unlock_irqrestore(&hr_cq->lock, flags);
3969
3970 return npolled;
3971 }
3972
get_op_for_set_hem(struct hns_roce_dev * hr_dev,u32 type,u32 step_idx,u8 * mbox_cmd)3973 static int get_op_for_set_hem(struct hns_roce_dev *hr_dev, u32 type,
3974 u32 step_idx, u8 *mbox_cmd)
3975 {
3976 u8 cmd;
3977
3978 switch (type) {
3979 case HEM_TYPE_QPC:
3980 cmd = HNS_ROCE_CMD_WRITE_QPC_BT0;
3981 break;
3982 case HEM_TYPE_MTPT:
3983 cmd = HNS_ROCE_CMD_WRITE_MPT_BT0;
3984 break;
3985 case HEM_TYPE_CQC:
3986 cmd = HNS_ROCE_CMD_WRITE_CQC_BT0;
3987 break;
3988 case HEM_TYPE_SRQC:
3989 cmd = HNS_ROCE_CMD_WRITE_SRQC_BT0;
3990 break;
3991 case HEM_TYPE_SCCC:
3992 cmd = HNS_ROCE_CMD_WRITE_SCCC_BT0;
3993 break;
3994 case HEM_TYPE_QPC_TIMER:
3995 cmd = HNS_ROCE_CMD_WRITE_QPC_TIMER_BT0;
3996 break;
3997 case HEM_TYPE_CQC_TIMER:
3998 cmd = HNS_ROCE_CMD_WRITE_CQC_TIMER_BT0;
3999 break;
4000 default:
4001 dev_warn(hr_dev->dev, "failed to check hem type %u.\n", type);
4002 return -EINVAL;
4003 }
4004
4005 *mbox_cmd = cmd + step_idx;
4006
4007 return 0;
4008 }
4009
config_gmv_ba_to_hw(struct hns_roce_dev * hr_dev,unsigned long obj,dma_addr_t base_addr)4010 static int config_gmv_ba_to_hw(struct hns_roce_dev *hr_dev, unsigned long obj,
4011 dma_addr_t base_addr)
4012 {
4013 struct hns_roce_cmq_desc desc;
4014 struct hns_roce_cmq_req *req = (struct hns_roce_cmq_req *)desc.data;
4015 u32 idx = obj / (HNS_HW_PAGE_SIZE / hr_dev->caps.gmv_entry_sz);
4016 u64 addr = to_hr_hw_page_addr(base_addr);
4017
4018 hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_CFG_GMV_BT, false);
4019
4020 hr_reg_write(req, CFG_GMV_BT_BA_L, lower_32_bits(addr));
4021 hr_reg_write(req, CFG_GMV_BT_BA_H, upper_32_bits(addr));
4022 hr_reg_write(req, CFG_GMV_BT_IDX, idx);
4023
4024 return hns_roce_cmq_send(hr_dev, &desc, 1);
4025 }
4026
set_hem_to_hw(struct hns_roce_dev * hr_dev,int obj,dma_addr_t base_addr,u32 hem_type,u32 step_idx)4027 static int set_hem_to_hw(struct hns_roce_dev *hr_dev, int obj,
4028 dma_addr_t base_addr, u32 hem_type, u32 step_idx)
4029 {
4030 int ret;
4031 u8 cmd;
4032
4033 if (unlikely(hem_type == HEM_TYPE_GMV))
4034 return config_gmv_ba_to_hw(hr_dev, obj, base_addr);
4035
4036 if (unlikely(hem_type == HEM_TYPE_SCCC && step_idx))
4037 return 0;
4038
4039 ret = get_op_for_set_hem(hr_dev, hem_type, step_idx, &cmd);
4040 if (ret < 0)
4041 return ret;
4042
4043 return config_hem_ba_to_hw(hr_dev, base_addr, cmd, obj);
4044 }
4045
hns_roce_v2_set_hem(struct hns_roce_dev * hr_dev,struct hns_roce_hem_table * table,int obj,u32 step_idx)4046 static int hns_roce_v2_set_hem(struct hns_roce_dev *hr_dev,
4047 struct hns_roce_hem_table *table, int obj,
4048 u32 step_idx)
4049 {
4050 struct hns_roce_hem_iter iter;
4051 struct hns_roce_hem_mhop mhop;
4052 struct hns_roce_hem *hem;
4053 unsigned long mhop_obj = obj;
4054 int i, j, k;
4055 int ret = 0;
4056 u64 hem_idx = 0;
4057 u64 l1_idx = 0;
4058 u64 bt_ba = 0;
4059 u32 chunk_ba_num;
4060 u32 hop_num;
4061
4062 if (!hns_roce_check_whether_mhop(hr_dev, table->type))
4063 return 0;
4064
4065 hns_roce_calc_hem_mhop(hr_dev, table, &mhop_obj, &mhop);
4066 i = mhop.l0_idx;
4067 j = mhop.l1_idx;
4068 k = mhop.l2_idx;
4069 hop_num = mhop.hop_num;
4070 chunk_ba_num = mhop.bt_chunk_size / 8;
4071
4072 if (hop_num == 2) {
4073 hem_idx = i * chunk_ba_num * chunk_ba_num + j * chunk_ba_num +
4074 k;
4075 l1_idx = i * chunk_ba_num + j;
4076 } else if (hop_num == 1) {
4077 hem_idx = i * chunk_ba_num + j;
4078 } else if (hop_num == HNS_ROCE_HOP_NUM_0) {
4079 hem_idx = i;
4080 }
4081
4082 if (table->type == HEM_TYPE_SCCC)
4083 obj = mhop.l0_idx;
4084
4085 if (check_whether_last_step(hop_num, step_idx)) {
4086 hem = table->hem[hem_idx];
4087 for (hns_roce_hem_first(hem, &iter);
4088 !hns_roce_hem_last(&iter); hns_roce_hem_next(&iter)) {
4089 bt_ba = hns_roce_hem_addr(&iter);
4090 ret = set_hem_to_hw(hr_dev, obj, bt_ba, table->type,
4091 step_idx);
4092 }
4093 } else {
4094 if (step_idx == 0)
4095 bt_ba = table->bt_l0_dma_addr[i];
4096 else if (step_idx == 1 && hop_num == 2)
4097 bt_ba = table->bt_l1_dma_addr[l1_idx];
4098
4099 ret = set_hem_to_hw(hr_dev, obj, bt_ba, table->type, step_idx);
4100 }
4101
4102 return ret;
4103 }
4104
hns_roce_v2_clear_hem(struct hns_roce_dev * hr_dev,struct hns_roce_hem_table * table,int tag,u32 step_idx)4105 static int hns_roce_v2_clear_hem(struct hns_roce_dev *hr_dev,
4106 struct hns_roce_hem_table *table,
4107 int tag, u32 step_idx)
4108 {
4109 struct hns_roce_cmd_mailbox *mailbox;
4110 struct device *dev = hr_dev->dev;
4111 u8 cmd = 0xff;
4112 int ret;
4113
4114 if (!hns_roce_check_whether_mhop(hr_dev, table->type))
4115 return 0;
4116
4117 switch (table->type) {
4118 case HEM_TYPE_QPC:
4119 cmd = HNS_ROCE_CMD_DESTROY_QPC_BT0;
4120 break;
4121 case HEM_TYPE_MTPT:
4122 cmd = HNS_ROCE_CMD_DESTROY_MPT_BT0;
4123 break;
4124 case HEM_TYPE_CQC:
4125 cmd = HNS_ROCE_CMD_DESTROY_CQC_BT0;
4126 break;
4127 case HEM_TYPE_SRQC:
4128 cmd = HNS_ROCE_CMD_DESTROY_SRQC_BT0;
4129 break;
4130 case HEM_TYPE_SCCC:
4131 case HEM_TYPE_QPC_TIMER:
4132 case HEM_TYPE_CQC_TIMER:
4133 case HEM_TYPE_GMV:
4134 return 0;
4135 default:
4136 dev_warn(dev, "table %u not to be destroyed by mailbox!\n",
4137 table->type);
4138 return 0;
4139 }
4140
4141 cmd += step_idx;
4142
4143 mailbox = hns_roce_alloc_cmd_mailbox(hr_dev);
4144 if (IS_ERR(mailbox))
4145 return PTR_ERR(mailbox);
4146
4147 ret = hns_roce_cmd_mbox(hr_dev, 0, mailbox->dma, cmd, tag);
4148
4149 hns_roce_free_cmd_mailbox(hr_dev, mailbox);
4150 return ret;
4151 }
4152
hns_roce_v2_qp_modify(struct hns_roce_dev * hr_dev,struct hns_roce_v2_qp_context * context,struct hns_roce_v2_qp_context * qpc_mask,struct hns_roce_qp * hr_qp)4153 static int hns_roce_v2_qp_modify(struct hns_roce_dev *hr_dev,
4154 struct hns_roce_v2_qp_context *context,
4155 struct hns_roce_v2_qp_context *qpc_mask,
4156 struct hns_roce_qp *hr_qp)
4157 {
4158 struct hns_roce_cmd_mailbox *mailbox;
4159 int qpc_size;
4160 int ret;
4161
4162 mailbox = hns_roce_alloc_cmd_mailbox(hr_dev);
4163 if (IS_ERR(mailbox))
4164 return PTR_ERR(mailbox);
4165
4166 /* The qpc size of HIP08 is only 256B, which is half of HIP09 */
4167 qpc_size = hr_dev->caps.qpc_sz;
4168 memcpy(mailbox->buf, context, qpc_size);
4169 memcpy(mailbox->buf + qpc_size, qpc_mask, qpc_size);
4170
4171 ret = hns_roce_cmd_mbox(hr_dev, mailbox->dma, 0,
4172 HNS_ROCE_CMD_MODIFY_QPC, hr_qp->qpn);
4173
4174 hns_roce_free_cmd_mailbox(hr_dev, mailbox);
4175
4176 return ret;
4177 }
4178
set_access_flags(struct hns_roce_qp * hr_qp,struct hns_roce_v2_qp_context * context,struct hns_roce_v2_qp_context * qpc_mask,const struct ib_qp_attr * attr,int attr_mask)4179 static void set_access_flags(struct hns_roce_qp *hr_qp,
4180 struct hns_roce_v2_qp_context *context,
4181 struct hns_roce_v2_qp_context *qpc_mask,
4182 const struct ib_qp_attr *attr, int attr_mask)
4183 {
4184 u8 dest_rd_atomic;
4185 u32 access_flags;
4186
4187 dest_rd_atomic = (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) ?
4188 attr->max_dest_rd_atomic : hr_qp->resp_depth;
4189
4190 access_flags = (attr_mask & IB_QP_ACCESS_FLAGS) ?
4191 attr->qp_access_flags : hr_qp->atomic_rd_en;
4192
4193 if (!dest_rd_atomic)
4194 access_flags &= IB_ACCESS_REMOTE_WRITE;
4195
4196 hr_reg_write_bool(context, QPC_RRE,
4197 access_flags & IB_ACCESS_REMOTE_READ);
4198 hr_reg_clear(qpc_mask, QPC_RRE);
4199
4200 hr_reg_write_bool(context, QPC_RWE,
4201 access_flags & IB_ACCESS_REMOTE_WRITE);
4202 hr_reg_clear(qpc_mask, QPC_RWE);
4203
4204 hr_reg_write_bool(context, QPC_ATE,
4205 access_flags & IB_ACCESS_REMOTE_ATOMIC);
4206 hr_reg_clear(qpc_mask, QPC_ATE);
4207 hr_reg_write_bool(context, QPC_EXT_ATE,
4208 access_flags & IB_ACCESS_REMOTE_ATOMIC);
4209 hr_reg_clear(qpc_mask, QPC_EXT_ATE);
4210 }
4211
set_qpc_wqe_cnt(struct hns_roce_qp * hr_qp,struct hns_roce_v2_qp_context * context,struct hns_roce_v2_qp_context * qpc_mask)4212 static void set_qpc_wqe_cnt(struct hns_roce_qp *hr_qp,
4213 struct hns_roce_v2_qp_context *context,
4214 struct hns_roce_v2_qp_context *qpc_mask)
4215 {
4216 hr_reg_write(context, QPC_SGE_SHIFT,
4217 to_hr_hem_entries_shift(hr_qp->sge.sge_cnt,
4218 hr_qp->sge.sge_shift));
4219
4220 hr_reg_write(context, QPC_SQ_SHIFT, ilog2(hr_qp->sq.wqe_cnt));
4221
4222 hr_reg_write(context, QPC_RQ_SHIFT, ilog2(hr_qp->rq.wqe_cnt));
4223 }
4224
get_cqn(struct ib_cq * ib_cq)4225 static inline int get_cqn(struct ib_cq *ib_cq)
4226 {
4227 return ib_cq ? to_hr_cq(ib_cq)->cqn : 0;
4228 }
4229
get_pdn(struct ib_pd * ib_pd)4230 static inline int get_pdn(struct ib_pd *ib_pd)
4231 {
4232 return ib_pd ? to_hr_pd(ib_pd)->pdn : 0;
4233 }
4234
modify_qp_reset_to_init(struct ib_qp * ibqp,const struct ib_qp_attr * attr,struct hns_roce_v2_qp_context * context,struct hns_roce_v2_qp_context * qpc_mask)4235 static void modify_qp_reset_to_init(struct ib_qp *ibqp,
4236 const struct ib_qp_attr *attr,
4237 struct hns_roce_v2_qp_context *context,
4238 struct hns_roce_v2_qp_context *qpc_mask)
4239 {
4240 struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
4241 struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
4242
4243 /*
4244 * In v2 engine, software pass context and context mask to hardware
4245 * when modifying qp. If software need modify some fields in context,
4246 * we should set all bits of the relevant fields in context mask to
4247 * 0 at the same time, else set them to 0x1.
4248 */
4249 hr_reg_write(context, QPC_TST, to_hr_qp_type(ibqp->qp_type));
4250
4251 hr_reg_write(context, QPC_PD, get_pdn(ibqp->pd));
4252
4253 hr_reg_write(context, QPC_RQWS, ilog2(hr_qp->rq.max_gs));
4254
4255 set_qpc_wqe_cnt(hr_qp, context, qpc_mask);
4256
4257 /* No VLAN need to set 0xFFF */
4258 hr_reg_write(context, QPC_VLAN_ID, 0xfff);
4259
4260 if (ibqp->qp_type == IB_QPT_XRC_TGT) {
4261 context->qkey_xrcd = cpu_to_le32(hr_qp->xrcdn);
4262
4263 hr_reg_enable(context, QPC_XRC_QP_TYPE);
4264 }
4265
4266 if (hr_qp->en_flags & HNS_ROCE_QP_CAP_RQ_RECORD_DB)
4267 hr_reg_enable(context, QPC_RQ_RECORD_EN);
4268
4269 if (hr_qp->en_flags & HNS_ROCE_QP_CAP_OWNER_DB)
4270 hr_reg_enable(context, QPC_OWNER_MODE);
4271
4272 hr_reg_write(context, QPC_RQ_DB_RECORD_ADDR_L,
4273 lower_32_bits(hr_qp->rdb.dma) >> 1);
4274 hr_reg_write(context, QPC_RQ_DB_RECORD_ADDR_H,
4275 upper_32_bits(hr_qp->rdb.dma));
4276
4277 hr_reg_write(context, QPC_RX_CQN, get_cqn(ibqp->recv_cq));
4278
4279 if (ibqp->srq) {
4280 hr_reg_enable(context, QPC_SRQ_EN);
4281 hr_reg_write(context, QPC_SRQN, to_hr_srq(ibqp->srq)->srqn);
4282 }
4283
4284 hr_reg_enable(context, QPC_FRE);
4285
4286 hr_reg_write(context, QPC_TX_CQN, get_cqn(ibqp->send_cq));
4287
4288 if (hr_dev->caps.qpc_sz < HNS_ROCE_V3_QPC_SZ)
4289 return;
4290
4291 if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_STASH)
4292 hr_reg_enable(&context->ext, QPCEX_STASH);
4293 }
4294
modify_qp_init_to_init(struct ib_qp * ibqp,const struct ib_qp_attr * attr,struct hns_roce_v2_qp_context * context,struct hns_roce_v2_qp_context * qpc_mask)4295 static void modify_qp_init_to_init(struct ib_qp *ibqp,
4296 const struct ib_qp_attr *attr,
4297 struct hns_roce_v2_qp_context *context,
4298 struct hns_roce_v2_qp_context *qpc_mask)
4299 {
4300 /*
4301 * In v2 engine, software pass context and context mask to hardware
4302 * when modifying qp. If software need modify some fields in context,
4303 * we should set all bits of the relevant fields in context mask to
4304 * 0 at the same time, else set them to 0x1.
4305 */
4306 hr_reg_write(context, QPC_TST, to_hr_qp_type(ibqp->qp_type));
4307 hr_reg_clear(qpc_mask, QPC_TST);
4308
4309 hr_reg_write(context, QPC_PD, get_pdn(ibqp->pd));
4310 hr_reg_clear(qpc_mask, QPC_PD);
4311
4312 hr_reg_write(context, QPC_RX_CQN, get_cqn(ibqp->recv_cq));
4313 hr_reg_clear(qpc_mask, QPC_RX_CQN);
4314
4315 hr_reg_write(context, QPC_TX_CQN, get_cqn(ibqp->send_cq));
4316 hr_reg_clear(qpc_mask, QPC_TX_CQN);
4317
4318 if (ibqp->srq) {
4319 hr_reg_enable(context, QPC_SRQ_EN);
4320 hr_reg_clear(qpc_mask, QPC_SRQ_EN);
4321 hr_reg_write(context, QPC_SRQN, to_hr_srq(ibqp->srq)->srqn);
4322 hr_reg_clear(qpc_mask, QPC_SRQN);
4323 }
4324 }
4325
config_qp_rq_buf(struct hns_roce_dev * hr_dev,struct hns_roce_qp * hr_qp,struct hns_roce_v2_qp_context * context,struct hns_roce_v2_qp_context * qpc_mask)4326 static int config_qp_rq_buf(struct hns_roce_dev *hr_dev,
4327 struct hns_roce_qp *hr_qp,
4328 struct hns_roce_v2_qp_context *context,
4329 struct hns_roce_v2_qp_context *qpc_mask)
4330 {
4331 u64 mtts[MTT_MIN_COUNT] = { 0 };
4332 u64 wqe_sge_ba;
4333 int count;
4334
4335 /* Search qp buf's mtts */
4336 count = hns_roce_mtr_find(hr_dev, &hr_qp->mtr, hr_qp->rq.offset, mtts,
4337 MTT_MIN_COUNT, &wqe_sge_ba);
4338 if (hr_qp->rq.wqe_cnt && count < 1) {
4339 ibdev_err(&hr_dev->ib_dev,
4340 "failed to find RQ WQE, QPN = 0x%lx.\n", hr_qp->qpn);
4341 return -EINVAL;
4342 }
4343
4344 context->wqe_sge_ba = cpu_to_le32(wqe_sge_ba >> 3);
4345 qpc_mask->wqe_sge_ba = 0;
4346
4347 /*
4348 * In v2 engine, software pass context and context mask to hardware
4349 * when modifying qp. If software need modify some fields in context,
4350 * we should set all bits of the relevant fields in context mask to
4351 * 0 at the same time, else set them to 0x1.
4352 */
4353 hr_reg_write(context, QPC_WQE_SGE_BA_H, wqe_sge_ba >> (32 + 3));
4354 hr_reg_clear(qpc_mask, QPC_WQE_SGE_BA_H);
4355
4356 hr_reg_write(context, QPC_SQ_HOP_NUM,
4357 to_hr_hem_hopnum(hr_dev->caps.wqe_sq_hop_num,
4358 hr_qp->sq.wqe_cnt));
4359 hr_reg_clear(qpc_mask, QPC_SQ_HOP_NUM);
4360
4361 hr_reg_write(context, QPC_SGE_HOP_NUM,
4362 to_hr_hem_hopnum(hr_dev->caps.wqe_sge_hop_num,
4363 hr_qp->sge.sge_cnt));
4364 hr_reg_clear(qpc_mask, QPC_SGE_HOP_NUM);
4365
4366 hr_reg_write(context, QPC_RQ_HOP_NUM,
4367 to_hr_hem_hopnum(hr_dev->caps.wqe_rq_hop_num,
4368 hr_qp->rq.wqe_cnt));
4369
4370 hr_reg_clear(qpc_mask, QPC_RQ_HOP_NUM);
4371
4372 hr_reg_write(context, QPC_WQE_SGE_BA_PG_SZ,
4373 to_hr_hw_page_shift(hr_qp->mtr.hem_cfg.ba_pg_shift));
4374 hr_reg_clear(qpc_mask, QPC_WQE_SGE_BA_PG_SZ);
4375
4376 hr_reg_write(context, QPC_WQE_SGE_BUF_PG_SZ,
4377 to_hr_hw_page_shift(hr_qp->mtr.hem_cfg.buf_pg_shift));
4378 hr_reg_clear(qpc_mask, QPC_WQE_SGE_BUF_PG_SZ);
4379
4380 context->rq_cur_blk_addr = cpu_to_le32(to_hr_hw_page_addr(mtts[0]));
4381 qpc_mask->rq_cur_blk_addr = 0;
4382
4383 hr_reg_write(context, QPC_RQ_CUR_BLK_ADDR_H,
4384 upper_32_bits(to_hr_hw_page_addr(mtts[0])));
4385 hr_reg_clear(qpc_mask, QPC_RQ_CUR_BLK_ADDR_H);
4386
4387 context->rq_nxt_blk_addr = cpu_to_le32(to_hr_hw_page_addr(mtts[1]));
4388 qpc_mask->rq_nxt_blk_addr = 0;
4389
4390 hr_reg_write(context, QPC_RQ_NXT_BLK_ADDR_H,
4391 upper_32_bits(to_hr_hw_page_addr(mtts[1])));
4392 hr_reg_clear(qpc_mask, QPC_RQ_NXT_BLK_ADDR_H);
4393
4394 return 0;
4395 }
4396
config_qp_sq_buf(struct hns_roce_dev * hr_dev,struct hns_roce_qp * hr_qp,struct hns_roce_v2_qp_context * context,struct hns_roce_v2_qp_context * qpc_mask)4397 static int config_qp_sq_buf(struct hns_roce_dev *hr_dev,
4398 struct hns_roce_qp *hr_qp,
4399 struct hns_roce_v2_qp_context *context,
4400 struct hns_roce_v2_qp_context *qpc_mask)
4401 {
4402 struct ib_device *ibdev = &hr_dev->ib_dev;
4403 u64 sge_cur_blk = 0;
4404 u64 sq_cur_blk = 0;
4405 int count;
4406
4407 /* search qp buf's mtts */
4408 count = hns_roce_mtr_find(hr_dev, &hr_qp->mtr, 0, &sq_cur_blk, 1, NULL);
4409 if (count < 1) {
4410 ibdev_err(ibdev, "failed to find QP(0x%lx) SQ buf.\n",
4411 hr_qp->qpn);
4412 return -EINVAL;
4413 }
4414 if (hr_qp->sge.sge_cnt > 0) {
4415 count = hns_roce_mtr_find(hr_dev, &hr_qp->mtr,
4416 hr_qp->sge.offset,
4417 &sge_cur_blk, 1, NULL);
4418 if (count < 1) {
4419 ibdev_err(ibdev, "failed to find QP(0x%lx) SGE buf.\n",
4420 hr_qp->qpn);
4421 return -EINVAL;
4422 }
4423 }
4424
4425 /*
4426 * In v2 engine, software pass context and context mask to hardware
4427 * when modifying qp. If software need modify some fields in context,
4428 * we should set all bits of the relevant fields in context mask to
4429 * 0 at the same time, else set them to 0x1.
4430 */
4431 hr_reg_write(context, QPC_SQ_CUR_BLK_ADDR_L,
4432 lower_32_bits(to_hr_hw_page_addr(sq_cur_blk)));
4433 hr_reg_write(context, QPC_SQ_CUR_BLK_ADDR_H,
4434 upper_32_bits(to_hr_hw_page_addr(sq_cur_blk)));
4435 hr_reg_clear(qpc_mask, QPC_SQ_CUR_BLK_ADDR_L);
4436 hr_reg_clear(qpc_mask, QPC_SQ_CUR_BLK_ADDR_H);
4437
4438 hr_reg_write(context, QPC_SQ_CUR_SGE_BLK_ADDR_L,
4439 lower_32_bits(to_hr_hw_page_addr(sge_cur_blk)));
4440 hr_reg_write(context, QPC_SQ_CUR_SGE_BLK_ADDR_H,
4441 upper_32_bits(to_hr_hw_page_addr(sge_cur_blk)));
4442 hr_reg_clear(qpc_mask, QPC_SQ_CUR_SGE_BLK_ADDR_L);
4443 hr_reg_clear(qpc_mask, QPC_SQ_CUR_SGE_BLK_ADDR_H);
4444
4445 hr_reg_write(context, QPC_RX_SQ_CUR_BLK_ADDR_L,
4446 lower_32_bits(to_hr_hw_page_addr(sq_cur_blk)));
4447 hr_reg_write(context, QPC_RX_SQ_CUR_BLK_ADDR_H,
4448 upper_32_bits(to_hr_hw_page_addr(sq_cur_blk)));
4449 hr_reg_clear(qpc_mask, QPC_RX_SQ_CUR_BLK_ADDR_L);
4450 hr_reg_clear(qpc_mask, QPC_RX_SQ_CUR_BLK_ADDR_H);
4451
4452 return 0;
4453 }
4454
get_mtu(struct ib_qp * ibqp,const struct ib_qp_attr * attr)4455 static inline enum ib_mtu get_mtu(struct ib_qp *ibqp,
4456 const struct ib_qp_attr *attr)
4457 {
4458 if (ibqp->qp_type == IB_QPT_GSI || ibqp->qp_type == IB_QPT_UD)
4459 return IB_MTU_4096;
4460
4461 return attr->path_mtu;
4462 }
4463
modify_qp_init_to_rtr(struct ib_qp * ibqp,const struct ib_qp_attr * attr,int attr_mask,struct hns_roce_v2_qp_context * context,struct hns_roce_v2_qp_context * qpc_mask,struct ib_udata * udata)4464 static int modify_qp_init_to_rtr(struct ib_qp *ibqp,
4465 const struct ib_qp_attr *attr, int attr_mask,
4466 struct hns_roce_v2_qp_context *context,
4467 struct hns_roce_v2_qp_context *qpc_mask,
4468 struct ib_udata *udata)
4469 {
4470 struct hns_roce_ucontext *uctx = rdma_udata_to_drv_context(udata,
4471 struct hns_roce_ucontext, ibucontext);
4472 struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
4473 struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
4474 struct ib_device *ibdev = &hr_dev->ib_dev;
4475 dma_addr_t trrl_ba;
4476 dma_addr_t irrl_ba;
4477 enum ib_mtu ib_mtu;
4478 const u8 *smac;
4479 u8 lp_pktn_ini;
4480 u64 *mtts;
4481 u8 *dmac;
4482 u32 port;
4483 int mtu;
4484 int ret;
4485
4486 ret = config_qp_rq_buf(hr_dev, hr_qp, context, qpc_mask);
4487 if (ret) {
4488 ibdev_err(ibdev, "failed to config rq buf, ret = %d.\n", ret);
4489 return ret;
4490 }
4491
4492 /* Search IRRL's mtts */
4493 mtts = hns_roce_table_find(hr_dev, &hr_dev->qp_table.irrl_table,
4494 hr_qp->qpn, &irrl_ba);
4495 if (!mtts) {
4496 ibdev_err(ibdev, "failed to find qp irrl_table.\n");
4497 return -EINVAL;
4498 }
4499
4500 /* Search TRRL's mtts */
4501 mtts = hns_roce_table_find(hr_dev, &hr_dev->qp_table.trrl_table,
4502 hr_qp->qpn, &trrl_ba);
4503 if (!mtts) {
4504 ibdev_err(ibdev, "failed to find qp trrl_table.\n");
4505 return -EINVAL;
4506 }
4507
4508 if (attr_mask & IB_QP_ALT_PATH) {
4509 ibdev_err(ibdev, "INIT2RTR attr_mask (0x%x) error.\n",
4510 attr_mask);
4511 return -EINVAL;
4512 }
4513
4514 hr_reg_write(context, QPC_TRRL_BA_L, trrl_ba >> 4);
4515 hr_reg_clear(qpc_mask, QPC_TRRL_BA_L);
4516 context->trrl_ba = cpu_to_le32(trrl_ba >> (16 + 4));
4517 qpc_mask->trrl_ba = 0;
4518 hr_reg_write(context, QPC_TRRL_BA_H, trrl_ba >> (32 + 16 + 4));
4519 hr_reg_clear(qpc_mask, QPC_TRRL_BA_H);
4520
4521 context->irrl_ba = cpu_to_le32(irrl_ba >> 6);
4522 qpc_mask->irrl_ba = 0;
4523 hr_reg_write(context, QPC_IRRL_BA_H, irrl_ba >> (32 + 6));
4524 hr_reg_clear(qpc_mask, QPC_IRRL_BA_H);
4525
4526 hr_reg_enable(context, QPC_RMT_E2E);
4527 hr_reg_clear(qpc_mask, QPC_RMT_E2E);
4528
4529 hr_reg_write(context, QPC_SIG_TYPE, hr_qp->sq_signal_bits);
4530 hr_reg_clear(qpc_mask, QPC_SIG_TYPE);
4531
4532 port = (attr_mask & IB_QP_PORT) ? (attr->port_num - 1) : hr_qp->port;
4533
4534 smac = (const u8 *)hr_dev->dev_addr[port];
4535 dmac = (u8 *)attr->ah_attr.roce.dmac;
4536 /* when dmac equals smac or loop_idc is 1, it should loopback */
4537 if (ether_addr_equal_unaligned(dmac, smac) ||
4538 hr_dev->loop_idc == 0x1) {
4539 hr_reg_write(context, QPC_LBI, hr_dev->loop_idc);
4540 hr_reg_clear(qpc_mask, QPC_LBI);
4541 }
4542
4543 if (attr_mask & IB_QP_DEST_QPN) {
4544 hr_reg_write(context, QPC_DQPN, attr->dest_qp_num);
4545 hr_reg_clear(qpc_mask, QPC_DQPN);
4546 }
4547
4548 memcpy(&context->dmac, dmac, sizeof(u32));
4549 hr_reg_write(context, QPC_DMAC_H, *((u16 *)(&dmac[4])));
4550 qpc_mask->dmac = 0;
4551 hr_reg_clear(qpc_mask, QPC_DMAC_H);
4552
4553 ib_mtu = get_mtu(ibqp, attr);
4554 hr_qp->path_mtu = ib_mtu;
4555
4556 mtu = ib_mtu_enum_to_int(ib_mtu);
4557 if (WARN_ON(mtu <= 0))
4558 return -EINVAL;
4559 #define MIN_LP_MSG_LEN 1024
4560 /* mtu * (2 ^ lp_pktn_ini) should be in the range of 1024 to mtu */
4561 lp_pktn_ini = ilog2(max(mtu, MIN_LP_MSG_LEN) / mtu);
4562
4563 if (attr_mask & IB_QP_PATH_MTU) {
4564 hr_reg_write(context, QPC_MTU, ib_mtu);
4565 hr_reg_clear(qpc_mask, QPC_MTU);
4566 }
4567
4568 hr_reg_write(context, QPC_LP_PKTN_INI, lp_pktn_ini);
4569 hr_reg_clear(qpc_mask, QPC_LP_PKTN_INI);
4570
4571 /* ACK_REQ_FREQ should be larger than or equal to LP_PKTN_INI */
4572 hr_reg_write(context, QPC_ACK_REQ_FREQ, lp_pktn_ini);
4573 hr_reg_clear(qpc_mask, QPC_ACK_REQ_FREQ);
4574
4575 hr_reg_clear(qpc_mask, QPC_RX_REQ_PSN_ERR);
4576 hr_reg_clear(qpc_mask, QPC_RX_REQ_MSN);
4577 hr_reg_clear(qpc_mask, QPC_RX_REQ_LAST_OPTYPE);
4578
4579 context->rq_rnr_timer = 0;
4580 qpc_mask->rq_rnr_timer = 0;
4581
4582 hr_reg_clear(qpc_mask, QPC_TRRL_HEAD_MAX);
4583 hr_reg_clear(qpc_mask, QPC_TRRL_TAIL_MAX);
4584
4585 /* rocee send 2^lp_sgen_ini segs every time */
4586 hr_reg_write(context, QPC_LP_SGEN_INI, 3);
4587 hr_reg_clear(qpc_mask, QPC_LP_SGEN_INI);
4588
4589 if (udata && ibqp->qp_type == IB_QPT_RC &&
4590 (uctx->config & HNS_ROCE_RQ_INLINE_FLAGS)) {
4591 hr_reg_write_bool(context, QPC_RQIE,
4592 hr_dev->caps.flags &
4593 HNS_ROCE_CAP_FLAG_RQ_INLINE);
4594 hr_reg_clear(qpc_mask, QPC_RQIE);
4595 }
4596
4597 if (udata &&
4598 (ibqp->qp_type == IB_QPT_RC || ibqp->qp_type == IB_QPT_XRC_TGT) &&
4599 (uctx->config & HNS_ROCE_CQE_INLINE_FLAGS)) {
4600 hr_reg_write_bool(context, QPC_CQEIE,
4601 hr_dev->caps.flags &
4602 HNS_ROCE_CAP_FLAG_CQE_INLINE);
4603 hr_reg_clear(qpc_mask, QPC_CQEIE);
4604
4605 hr_reg_write(context, QPC_CQEIS, 0);
4606 hr_reg_clear(qpc_mask, QPC_CQEIS);
4607 }
4608
4609 return 0;
4610 }
4611
modify_qp_rtr_to_rts(struct ib_qp * ibqp,const struct ib_qp_attr * attr,int attr_mask,struct hns_roce_v2_qp_context * context,struct hns_roce_v2_qp_context * qpc_mask)4612 static int modify_qp_rtr_to_rts(struct ib_qp *ibqp,
4613 const struct ib_qp_attr *attr, int attr_mask,
4614 struct hns_roce_v2_qp_context *context,
4615 struct hns_roce_v2_qp_context *qpc_mask)
4616 {
4617 struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
4618 struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
4619 struct ib_device *ibdev = &hr_dev->ib_dev;
4620 int ret;
4621
4622 /* Not support alternate path and path migration */
4623 if (attr_mask & (IB_QP_ALT_PATH | IB_QP_PATH_MIG_STATE)) {
4624 ibdev_err(ibdev, "RTR2RTS attr_mask (0x%x)error\n", attr_mask);
4625 return -EINVAL;
4626 }
4627
4628 ret = config_qp_sq_buf(hr_dev, hr_qp, context, qpc_mask);
4629 if (ret) {
4630 ibdev_err(ibdev, "failed to config sq buf, ret = %d.\n", ret);
4631 return ret;
4632 }
4633
4634 /*
4635 * Set some fields in context to zero, Because the default values
4636 * of all fields in context are zero, we need not set them to 0 again.
4637 * but we should set the relevant fields of context mask to 0.
4638 */
4639 hr_reg_clear(qpc_mask, QPC_IRRL_SGE_IDX);
4640
4641 hr_reg_clear(qpc_mask, QPC_RX_ACK_MSN);
4642
4643 hr_reg_clear(qpc_mask, QPC_ACK_LAST_OPTYPE);
4644 hr_reg_clear(qpc_mask, QPC_IRRL_PSN_VLD);
4645 hr_reg_clear(qpc_mask, QPC_IRRL_PSN);
4646
4647 hr_reg_clear(qpc_mask, QPC_IRRL_TAIL_REAL);
4648
4649 hr_reg_clear(qpc_mask, QPC_RETRY_MSG_MSN);
4650
4651 hr_reg_clear(qpc_mask, QPC_RNR_RETRY_FLAG);
4652
4653 hr_reg_clear(qpc_mask, QPC_CHECK_FLG);
4654
4655 hr_reg_clear(qpc_mask, QPC_V2_IRRL_HEAD);
4656
4657 return 0;
4658 }
4659
get_dip_ctx_idx(struct ib_qp * ibqp,const struct ib_qp_attr * attr,u32 * dip_idx)4660 static int get_dip_ctx_idx(struct ib_qp *ibqp, const struct ib_qp_attr *attr,
4661 u32 *dip_idx)
4662 {
4663 const struct ib_global_route *grh = rdma_ah_read_grh(&attr->ah_attr);
4664 struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
4665 u32 *spare_idx = hr_dev->qp_table.idx_table.spare_idx;
4666 u32 *head = &hr_dev->qp_table.idx_table.head;
4667 u32 *tail = &hr_dev->qp_table.idx_table.tail;
4668 struct hns_roce_dip *hr_dip;
4669 unsigned long flags;
4670 int ret = 0;
4671
4672 spin_lock_irqsave(&hr_dev->dip_list_lock, flags);
4673
4674 spare_idx[*tail] = ibqp->qp_num;
4675 *tail = (*tail == hr_dev->caps.num_qps - 1) ? 0 : (*tail + 1);
4676
4677 list_for_each_entry(hr_dip, &hr_dev->dip_list, node) {
4678 if (!memcmp(grh->dgid.raw, hr_dip->dgid, 16)) {
4679 *dip_idx = hr_dip->dip_idx;
4680 goto out;
4681 }
4682 }
4683
4684 /* If no dgid is found, a new dip and a mapping between dgid and
4685 * dip_idx will be created.
4686 */
4687 hr_dip = kzalloc(sizeof(*hr_dip), GFP_ATOMIC);
4688 if (!hr_dip) {
4689 ret = -ENOMEM;
4690 goto out;
4691 }
4692
4693 memcpy(hr_dip->dgid, grh->dgid.raw, sizeof(grh->dgid.raw));
4694 hr_dip->dip_idx = *dip_idx = spare_idx[*head];
4695 *head = (*head == hr_dev->caps.num_qps - 1) ? 0 : (*head + 1);
4696 list_add_tail(&hr_dip->node, &hr_dev->dip_list);
4697
4698 out:
4699 spin_unlock_irqrestore(&hr_dev->dip_list_lock, flags);
4700 return ret;
4701 }
4702
4703 enum {
4704 CONG_DCQCN,
4705 CONG_WINDOW,
4706 };
4707
4708 enum {
4709 UNSUPPORT_CONG_LEVEL,
4710 SUPPORT_CONG_LEVEL,
4711 };
4712
4713 enum {
4714 CONG_LDCP,
4715 CONG_HC3,
4716 };
4717
4718 enum {
4719 DIP_INVALID,
4720 DIP_VALID,
4721 };
4722
4723 enum {
4724 WND_LIMIT,
4725 WND_UNLIMIT,
4726 };
4727
check_cong_type(struct ib_qp * ibqp,struct hns_roce_congestion_algorithm * cong_alg)4728 static int check_cong_type(struct ib_qp *ibqp,
4729 struct hns_roce_congestion_algorithm *cong_alg)
4730 {
4731 struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
4732 struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
4733
4734 if (ibqp->qp_type == IB_QPT_UD || ibqp->qp_type == IB_QPT_GSI)
4735 hr_qp->cong_type = CONG_TYPE_DCQCN;
4736 else
4737 hr_qp->cong_type = hr_dev->caps.cong_type;
4738
4739 /* different congestion types match different configurations */
4740 switch (hr_qp->cong_type) {
4741 case CONG_TYPE_DCQCN:
4742 cong_alg->alg_sel = CONG_DCQCN;
4743 cong_alg->alg_sub_sel = UNSUPPORT_CONG_LEVEL;
4744 cong_alg->dip_vld = DIP_INVALID;
4745 cong_alg->wnd_mode_sel = WND_LIMIT;
4746 break;
4747 case CONG_TYPE_LDCP:
4748 cong_alg->alg_sel = CONG_WINDOW;
4749 cong_alg->alg_sub_sel = CONG_LDCP;
4750 cong_alg->dip_vld = DIP_INVALID;
4751 cong_alg->wnd_mode_sel = WND_UNLIMIT;
4752 break;
4753 case CONG_TYPE_HC3:
4754 cong_alg->alg_sel = CONG_WINDOW;
4755 cong_alg->alg_sub_sel = CONG_HC3;
4756 cong_alg->dip_vld = DIP_INVALID;
4757 cong_alg->wnd_mode_sel = WND_LIMIT;
4758 break;
4759 case CONG_TYPE_DIP:
4760 cong_alg->alg_sel = CONG_DCQCN;
4761 cong_alg->alg_sub_sel = UNSUPPORT_CONG_LEVEL;
4762 cong_alg->dip_vld = DIP_VALID;
4763 cong_alg->wnd_mode_sel = WND_LIMIT;
4764 break;
4765 default:
4766 ibdev_warn(&hr_dev->ib_dev,
4767 "invalid type(%u) for congestion selection.\n",
4768 hr_qp->cong_type);
4769 hr_qp->cong_type = CONG_TYPE_DCQCN;
4770 cong_alg->alg_sel = CONG_DCQCN;
4771 cong_alg->alg_sub_sel = UNSUPPORT_CONG_LEVEL;
4772 cong_alg->dip_vld = DIP_INVALID;
4773 cong_alg->wnd_mode_sel = WND_LIMIT;
4774 break;
4775 }
4776
4777 return 0;
4778 }
4779
fill_cong_field(struct ib_qp * ibqp,const struct ib_qp_attr * attr,struct hns_roce_v2_qp_context * context,struct hns_roce_v2_qp_context * qpc_mask)4780 static int fill_cong_field(struct ib_qp *ibqp, const struct ib_qp_attr *attr,
4781 struct hns_roce_v2_qp_context *context,
4782 struct hns_roce_v2_qp_context *qpc_mask)
4783 {
4784 const struct ib_global_route *grh = rdma_ah_read_grh(&attr->ah_attr);
4785 struct hns_roce_congestion_algorithm cong_field;
4786 struct ib_device *ibdev = ibqp->device;
4787 struct hns_roce_dev *hr_dev = to_hr_dev(ibdev);
4788 struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
4789 u32 dip_idx = 0;
4790 int ret;
4791
4792 if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08 ||
4793 grh->sgid_attr->gid_type == IB_GID_TYPE_ROCE)
4794 return 0;
4795
4796 ret = check_cong_type(ibqp, &cong_field);
4797 if (ret)
4798 return ret;
4799
4800 hr_reg_write(context, QPC_CONG_ALGO_TMPL_ID, hr_dev->cong_algo_tmpl_id +
4801 hr_qp->cong_type * HNS_ROCE_CONG_SIZE);
4802 hr_reg_clear(qpc_mask, QPC_CONG_ALGO_TMPL_ID);
4803 hr_reg_write(&context->ext, QPCEX_CONG_ALG_SEL, cong_field.alg_sel);
4804 hr_reg_clear(&qpc_mask->ext, QPCEX_CONG_ALG_SEL);
4805 hr_reg_write(&context->ext, QPCEX_CONG_ALG_SUB_SEL,
4806 cong_field.alg_sub_sel);
4807 hr_reg_clear(&qpc_mask->ext, QPCEX_CONG_ALG_SUB_SEL);
4808 hr_reg_write(&context->ext, QPCEX_DIP_CTX_IDX_VLD, cong_field.dip_vld);
4809 hr_reg_clear(&qpc_mask->ext, QPCEX_DIP_CTX_IDX_VLD);
4810 hr_reg_write(&context->ext, QPCEX_SQ_RQ_NOT_FORBID_EN,
4811 cong_field.wnd_mode_sel);
4812 hr_reg_clear(&qpc_mask->ext, QPCEX_SQ_RQ_NOT_FORBID_EN);
4813
4814 /* if dip is disabled, there is no need to set dip idx */
4815 if (cong_field.dip_vld == 0)
4816 return 0;
4817
4818 ret = get_dip_ctx_idx(ibqp, attr, &dip_idx);
4819 if (ret) {
4820 ibdev_err(ibdev, "failed to fill cong field, ret = %d.\n", ret);
4821 return ret;
4822 }
4823
4824 hr_reg_write(&context->ext, QPCEX_DIP_CTX_IDX, dip_idx);
4825 hr_reg_write(&qpc_mask->ext, QPCEX_DIP_CTX_IDX, 0);
4826
4827 return 0;
4828 }
4829
hns_roce_v2_set_path(struct ib_qp * ibqp,const struct ib_qp_attr * attr,int attr_mask,struct hns_roce_v2_qp_context * context,struct hns_roce_v2_qp_context * qpc_mask)4830 static int hns_roce_v2_set_path(struct ib_qp *ibqp,
4831 const struct ib_qp_attr *attr,
4832 int attr_mask,
4833 struct hns_roce_v2_qp_context *context,
4834 struct hns_roce_v2_qp_context *qpc_mask)
4835 {
4836 const struct ib_global_route *grh = rdma_ah_read_grh(&attr->ah_attr);
4837 struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
4838 struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
4839 struct ib_device *ibdev = &hr_dev->ib_dev;
4840 const struct ib_gid_attr *gid_attr = NULL;
4841 u8 sl = rdma_ah_get_sl(&attr->ah_attr);
4842 int is_roce_protocol;
4843 u16 vlan_id = 0xffff;
4844 bool is_udp = false;
4845 u32 max_sl;
4846 u8 ib_port;
4847 u8 hr_port;
4848 int ret;
4849
4850 max_sl = min_t(u32, MAX_SERVICE_LEVEL, hr_dev->caps.sl_num - 1);
4851 if (unlikely(sl > max_sl)) {
4852 ibdev_err_ratelimited(ibdev,
4853 "failed to fill QPC, sl (%u) shouldn't be larger than %u.\n",
4854 sl, max_sl);
4855 return -EINVAL;
4856 }
4857
4858 /*
4859 * If free_mr_en of qp is set, it means that this qp comes from
4860 * free mr. This qp will perform the loopback operation.
4861 * In the loopback scenario, only sl needs to be set.
4862 */
4863 if (hr_qp->free_mr_en) {
4864 hr_reg_write(context, QPC_SL, sl);
4865 hr_reg_clear(qpc_mask, QPC_SL);
4866 hr_qp->sl = sl;
4867 return 0;
4868 }
4869
4870 ib_port = (attr_mask & IB_QP_PORT) ? attr->port_num : hr_qp->port + 1;
4871 hr_port = ib_port - 1;
4872 is_roce_protocol = rdma_cap_eth_ah(&hr_dev->ib_dev, ib_port) &&
4873 rdma_ah_get_ah_flags(&attr->ah_attr) & IB_AH_GRH;
4874
4875 if (is_roce_protocol) {
4876 gid_attr = attr->ah_attr.grh.sgid_attr;
4877 ret = rdma_read_gid_l2_fields(gid_attr, &vlan_id, NULL);
4878 if (ret)
4879 return ret;
4880
4881 is_udp = (gid_attr->gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP);
4882 }
4883
4884 /* Only HIP08 needs to set the vlan_en bits in QPC */
4885 if (vlan_id < VLAN_N_VID &&
4886 hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08) {
4887 hr_reg_enable(context, QPC_RQ_VLAN_EN);
4888 hr_reg_clear(qpc_mask, QPC_RQ_VLAN_EN);
4889 hr_reg_enable(context, QPC_SQ_VLAN_EN);
4890 hr_reg_clear(qpc_mask, QPC_SQ_VLAN_EN);
4891 }
4892
4893 hr_reg_write(context, QPC_VLAN_ID, vlan_id);
4894 hr_reg_clear(qpc_mask, QPC_VLAN_ID);
4895
4896 if (grh->sgid_index >= hr_dev->caps.gid_table_len[hr_port]) {
4897 ibdev_err(ibdev, "sgid_index(%u) too large. max is %d\n",
4898 grh->sgid_index, hr_dev->caps.gid_table_len[hr_port]);
4899 return -EINVAL;
4900 }
4901
4902 if (attr->ah_attr.type != RDMA_AH_ATTR_TYPE_ROCE) {
4903 ibdev_err(ibdev, "ah attr is not RDMA roce type\n");
4904 return -EINVAL;
4905 }
4906
4907 hr_reg_write(context, QPC_UDPSPN,
4908 is_udp ? rdma_get_udp_sport(grh->flow_label, ibqp->qp_num,
4909 attr->dest_qp_num) :
4910 0);
4911
4912 hr_reg_clear(qpc_mask, QPC_UDPSPN);
4913
4914 hr_reg_write(context, QPC_GMV_IDX, grh->sgid_index);
4915
4916 hr_reg_clear(qpc_mask, QPC_GMV_IDX);
4917
4918 hr_reg_write(context, QPC_HOPLIMIT, grh->hop_limit);
4919 hr_reg_clear(qpc_mask, QPC_HOPLIMIT);
4920
4921 ret = fill_cong_field(ibqp, attr, context, qpc_mask);
4922 if (ret)
4923 return ret;
4924
4925 hr_reg_write(context, QPC_TC, get_tclass(&attr->ah_attr.grh));
4926 hr_reg_clear(qpc_mask, QPC_TC);
4927
4928 hr_reg_write(context, QPC_FL, grh->flow_label);
4929 hr_reg_clear(qpc_mask, QPC_FL);
4930 memcpy(context->dgid, grh->dgid.raw, sizeof(grh->dgid.raw));
4931 memset(qpc_mask->dgid, 0, sizeof(grh->dgid.raw));
4932
4933 hr_qp->sl = sl;
4934 hr_reg_write(context, QPC_SL, hr_qp->sl);
4935 hr_reg_clear(qpc_mask, QPC_SL);
4936
4937 return 0;
4938 }
4939
check_qp_state(enum ib_qp_state cur_state,enum ib_qp_state new_state)4940 static bool check_qp_state(enum ib_qp_state cur_state,
4941 enum ib_qp_state new_state)
4942 {
4943 static const bool sm[][IB_QPS_ERR + 1] = {
4944 [IB_QPS_RESET] = { [IB_QPS_RESET] = true,
4945 [IB_QPS_INIT] = true },
4946 [IB_QPS_INIT] = { [IB_QPS_RESET] = true,
4947 [IB_QPS_INIT] = true,
4948 [IB_QPS_RTR] = true,
4949 [IB_QPS_ERR] = true },
4950 [IB_QPS_RTR] = { [IB_QPS_RESET] = true,
4951 [IB_QPS_RTS] = true,
4952 [IB_QPS_ERR] = true },
4953 [IB_QPS_RTS] = { [IB_QPS_RESET] = true,
4954 [IB_QPS_RTS] = true,
4955 [IB_QPS_ERR] = true },
4956 [IB_QPS_SQD] = {},
4957 [IB_QPS_SQE] = {},
4958 [IB_QPS_ERR] = { [IB_QPS_RESET] = true,
4959 [IB_QPS_ERR] = true }
4960 };
4961
4962 return sm[cur_state][new_state];
4963 }
4964
hns_roce_v2_set_abs_fields(struct ib_qp * ibqp,const struct ib_qp_attr * attr,int attr_mask,enum ib_qp_state cur_state,enum ib_qp_state new_state,struct hns_roce_v2_qp_context * context,struct hns_roce_v2_qp_context * qpc_mask,struct ib_udata * udata)4965 static int hns_roce_v2_set_abs_fields(struct ib_qp *ibqp,
4966 const struct ib_qp_attr *attr,
4967 int attr_mask,
4968 enum ib_qp_state cur_state,
4969 enum ib_qp_state new_state,
4970 struct hns_roce_v2_qp_context *context,
4971 struct hns_roce_v2_qp_context *qpc_mask,
4972 struct ib_udata *udata)
4973 {
4974 struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
4975 int ret = 0;
4976
4977 if (!check_qp_state(cur_state, new_state)) {
4978 ibdev_err(&hr_dev->ib_dev, "Illegal state for QP!\n");
4979 return -EINVAL;
4980 }
4981
4982 if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
4983 memset(qpc_mask, 0, hr_dev->caps.qpc_sz);
4984 modify_qp_reset_to_init(ibqp, attr, context, qpc_mask);
4985 } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_INIT) {
4986 modify_qp_init_to_init(ibqp, attr, context, qpc_mask);
4987 } else if (cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR) {
4988 ret = modify_qp_init_to_rtr(ibqp, attr, attr_mask, context,
4989 qpc_mask, udata);
4990 } else if (cur_state == IB_QPS_RTR && new_state == IB_QPS_RTS) {
4991 ret = modify_qp_rtr_to_rts(ibqp, attr, attr_mask, context,
4992 qpc_mask);
4993 }
4994
4995 return ret;
4996 }
4997
check_qp_timeout_cfg_range(struct hns_roce_dev * hr_dev,u8 * timeout)4998 static bool check_qp_timeout_cfg_range(struct hns_roce_dev *hr_dev, u8 *timeout)
4999 {
5000 #define QP_ACK_TIMEOUT_MAX_HIP08 20
5001 #define QP_ACK_TIMEOUT_MAX 31
5002
5003 if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08) {
5004 if (*timeout > QP_ACK_TIMEOUT_MAX_HIP08) {
5005 ibdev_warn(&hr_dev->ib_dev,
5006 "local ACK timeout shall be 0 to 20.\n");
5007 return false;
5008 }
5009 *timeout += HNS_ROCE_V2_QP_ACK_TIMEOUT_OFS_HIP08;
5010 } else if (hr_dev->pci_dev->revision > PCI_REVISION_ID_HIP08) {
5011 if (*timeout > QP_ACK_TIMEOUT_MAX) {
5012 ibdev_warn(&hr_dev->ib_dev,
5013 "local ACK timeout shall be 0 to 31.\n");
5014 return false;
5015 }
5016 }
5017
5018 return true;
5019 }
5020
hns_roce_v2_set_opt_fields(struct ib_qp * ibqp,const struct ib_qp_attr * attr,int attr_mask,struct hns_roce_v2_qp_context * context,struct hns_roce_v2_qp_context * qpc_mask)5021 static int hns_roce_v2_set_opt_fields(struct ib_qp *ibqp,
5022 const struct ib_qp_attr *attr,
5023 int attr_mask,
5024 struct hns_roce_v2_qp_context *context,
5025 struct hns_roce_v2_qp_context *qpc_mask)
5026 {
5027 struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
5028 struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
5029 int ret = 0;
5030 u8 timeout;
5031
5032 if (attr_mask & IB_QP_AV) {
5033 ret = hns_roce_v2_set_path(ibqp, attr, attr_mask, context,
5034 qpc_mask);
5035 if (ret)
5036 return ret;
5037 }
5038
5039 if (attr_mask & IB_QP_TIMEOUT) {
5040 timeout = attr->timeout;
5041 if (check_qp_timeout_cfg_range(hr_dev, &timeout)) {
5042 hr_reg_write(context, QPC_AT, timeout);
5043 hr_reg_clear(qpc_mask, QPC_AT);
5044 }
5045 }
5046
5047 if (attr_mask & IB_QP_RETRY_CNT) {
5048 hr_reg_write(context, QPC_RETRY_NUM_INIT, attr->retry_cnt);
5049 hr_reg_clear(qpc_mask, QPC_RETRY_NUM_INIT);
5050
5051 hr_reg_write(context, QPC_RETRY_CNT, attr->retry_cnt);
5052 hr_reg_clear(qpc_mask, QPC_RETRY_CNT);
5053 }
5054
5055 if (attr_mask & IB_QP_RNR_RETRY) {
5056 hr_reg_write(context, QPC_RNR_NUM_INIT, attr->rnr_retry);
5057 hr_reg_clear(qpc_mask, QPC_RNR_NUM_INIT);
5058
5059 hr_reg_write(context, QPC_RNR_CNT, attr->rnr_retry);
5060 hr_reg_clear(qpc_mask, QPC_RNR_CNT);
5061 }
5062
5063 if (attr_mask & IB_QP_SQ_PSN) {
5064 hr_reg_write(context, QPC_SQ_CUR_PSN, attr->sq_psn);
5065 hr_reg_clear(qpc_mask, QPC_SQ_CUR_PSN);
5066
5067 hr_reg_write(context, QPC_SQ_MAX_PSN, attr->sq_psn);
5068 hr_reg_clear(qpc_mask, QPC_SQ_MAX_PSN);
5069
5070 hr_reg_write(context, QPC_RETRY_MSG_PSN_L, attr->sq_psn);
5071 hr_reg_clear(qpc_mask, QPC_RETRY_MSG_PSN_L);
5072
5073 hr_reg_write(context, QPC_RETRY_MSG_PSN_H,
5074 attr->sq_psn >> RETRY_MSG_PSN_SHIFT);
5075 hr_reg_clear(qpc_mask, QPC_RETRY_MSG_PSN_H);
5076
5077 hr_reg_write(context, QPC_RETRY_MSG_FPKT_PSN, attr->sq_psn);
5078 hr_reg_clear(qpc_mask, QPC_RETRY_MSG_FPKT_PSN);
5079
5080 hr_reg_write(context, QPC_RX_ACK_EPSN, attr->sq_psn);
5081 hr_reg_clear(qpc_mask, QPC_RX_ACK_EPSN);
5082 }
5083
5084 if ((attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) &&
5085 attr->max_dest_rd_atomic) {
5086 hr_reg_write(context, QPC_RR_MAX,
5087 fls(attr->max_dest_rd_atomic - 1));
5088 hr_reg_clear(qpc_mask, QPC_RR_MAX);
5089 }
5090
5091 if ((attr_mask & IB_QP_MAX_QP_RD_ATOMIC) && attr->max_rd_atomic) {
5092 hr_reg_write(context, QPC_SR_MAX, fls(attr->max_rd_atomic - 1));
5093 hr_reg_clear(qpc_mask, QPC_SR_MAX);
5094 }
5095
5096 if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC))
5097 set_access_flags(hr_qp, context, qpc_mask, attr, attr_mask);
5098
5099 if (attr_mask & IB_QP_MIN_RNR_TIMER) {
5100 hr_reg_write(context, QPC_MIN_RNR_TIME,
5101 hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08 ?
5102 HNS_ROCE_RNR_TIMER_10NS : attr->min_rnr_timer);
5103 hr_reg_clear(qpc_mask, QPC_MIN_RNR_TIME);
5104 }
5105
5106 if (attr_mask & IB_QP_RQ_PSN) {
5107 hr_reg_write(context, QPC_RX_REQ_EPSN, attr->rq_psn);
5108 hr_reg_clear(qpc_mask, QPC_RX_REQ_EPSN);
5109
5110 hr_reg_write(context, QPC_RAQ_PSN, attr->rq_psn - 1);
5111 hr_reg_clear(qpc_mask, QPC_RAQ_PSN);
5112 }
5113
5114 if (attr_mask & IB_QP_QKEY) {
5115 context->qkey_xrcd = cpu_to_le32(attr->qkey);
5116 qpc_mask->qkey_xrcd = 0;
5117 hr_qp->qkey = attr->qkey;
5118 }
5119
5120 return ret;
5121 }
5122
hns_roce_v2_record_opt_fields(struct ib_qp * ibqp,const struct ib_qp_attr * attr,int attr_mask)5123 static void hns_roce_v2_record_opt_fields(struct ib_qp *ibqp,
5124 const struct ib_qp_attr *attr,
5125 int attr_mask)
5126 {
5127 struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
5128 struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
5129
5130 if (attr_mask & IB_QP_ACCESS_FLAGS)
5131 hr_qp->atomic_rd_en = attr->qp_access_flags;
5132
5133 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
5134 hr_qp->resp_depth = attr->max_dest_rd_atomic;
5135 if (attr_mask & IB_QP_PORT) {
5136 hr_qp->port = attr->port_num - 1;
5137 hr_qp->phy_port = hr_dev->iboe.phy_port[hr_qp->port];
5138 }
5139 }
5140
clear_qp(struct hns_roce_qp * hr_qp)5141 static void clear_qp(struct hns_roce_qp *hr_qp)
5142 {
5143 struct ib_qp *ibqp = &hr_qp->ibqp;
5144
5145 if (ibqp->send_cq)
5146 hns_roce_v2_cq_clean(to_hr_cq(ibqp->send_cq),
5147 hr_qp->qpn, NULL);
5148
5149 if (ibqp->recv_cq && ibqp->recv_cq != ibqp->send_cq)
5150 hns_roce_v2_cq_clean(to_hr_cq(ibqp->recv_cq),
5151 hr_qp->qpn, ibqp->srq ?
5152 to_hr_srq(ibqp->srq) : NULL);
5153
5154 if (hr_qp->en_flags & HNS_ROCE_QP_CAP_RQ_RECORD_DB)
5155 *hr_qp->rdb.db_record = 0;
5156
5157 hr_qp->rq.head = 0;
5158 hr_qp->rq.tail = 0;
5159 hr_qp->sq.head = 0;
5160 hr_qp->sq.tail = 0;
5161 hr_qp->next_sge = 0;
5162 }
5163
v2_set_flushed_fields(struct ib_qp * ibqp,struct hns_roce_v2_qp_context * context,struct hns_roce_v2_qp_context * qpc_mask)5164 static void v2_set_flushed_fields(struct ib_qp *ibqp,
5165 struct hns_roce_v2_qp_context *context,
5166 struct hns_roce_v2_qp_context *qpc_mask)
5167 {
5168 struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
5169 unsigned long sq_flag = 0;
5170 unsigned long rq_flag = 0;
5171
5172 if (ibqp->qp_type == IB_QPT_XRC_TGT)
5173 return;
5174
5175 spin_lock_irqsave(&hr_qp->sq.lock, sq_flag);
5176 hr_reg_write(context, QPC_SQ_PRODUCER_IDX, hr_qp->sq.head);
5177 hr_reg_clear(qpc_mask, QPC_SQ_PRODUCER_IDX);
5178 hr_qp->state = IB_QPS_ERR;
5179 spin_unlock_irqrestore(&hr_qp->sq.lock, sq_flag);
5180
5181 if (ibqp->srq || ibqp->qp_type == IB_QPT_XRC_INI) /* no RQ */
5182 return;
5183
5184 spin_lock_irqsave(&hr_qp->rq.lock, rq_flag);
5185 hr_reg_write(context, QPC_RQ_PRODUCER_IDX, hr_qp->rq.head);
5186 hr_reg_clear(qpc_mask, QPC_RQ_PRODUCER_IDX);
5187 spin_unlock_irqrestore(&hr_qp->rq.lock, rq_flag);
5188 }
5189
hns_roce_v2_modify_qp(struct ib_qp * ibqp,const struct ib_qp_attr * attr,int attr_mask,enum ib_qp_state cur_state,enum ib_qp_state new_state,struct ib_udata * udata)5190 static int hns_roce_v2_modify_qp(struct ib_qp *ibqp,
5191 const struct ib_qp_attr *attr,
5192 int attr_mask, enum ib_qp_state cur_state,
5193 enum ib_qp_state new_state, struct ib_udata *udata)
5194 {
5195 struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
5196 struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
5197 struct hns_roce_v2_qp_context ctx[2];
5198 struct hns_roce_v2_qp_context *context = ctx;
5199 struct hns_roce_v2_qp_context *qpc_mask = ctx + 1;
5200 struct ib_device *ibdev = &hr_dev->ib_dev;
5201 int ret;
5202
5203 if (attr_mask & ~IB_QP_ATTR_STANDARD_BITS)
5204 return -EOPNOTSUPP;
5205
5206 /*
5207 * In v2 engine, software pass context and context mask to hardware
5208 * when modifying qp. If software need modify some fields in context,
5209 * we should set all bits of the relevant fields in context mask to
5210 * 0 at the same time, else set them to 0x1.
5211 */
5212 memset(context, 0, hr_dev->caps.qpc_sz);
5213 memset(qpc_mask, 0xff, hr_dev->caps.qpc_sz);
5214
5215 ret = hns_roce_v2_set_abs_fields(ibqp, attr, attr_mask, cur_state,
5216 new_state, context, qpc_mask, udata);
5217 if (ret)
5218 goto out;
5219
5220 /* When QP state is err, SQ and RQ WQE should be flushed */
5221 if (new_state == IB_QPS_ERR)
5222 v2_set_flushed_fields(ibqp, context, qpc_mask);
5223
5224 /* Configure the optional fields */
5225 ret = hns_roce_v2_set_opt_fields(ibqp, attr, attr_mask, context,
5226 qpc_mask);
5227 if (ret)
5228 goto out;
5229
5230 hr_reg_write_bool(context, QPC_INV_CREDIT,
5231 to_hr_qp_type(hr_qp->ibqp.qp_type) == SERV_TYPE_XRC ||
5232 ibqp->srq);
5233 hr_reg_clear(qpc_mask, QPC_INV_CREDIT);
5234
5235 /* Every status migrate must change state */
5236 hr_reg_write(context, QPC_QP_ST, new_state);
5237 hr_reg_clear(qpc_mask, QPC_QP_ST);
5238
5239 /* SW pass context to HW */
5240 ret = hns_roce_v2_qp_modify(hr_dev, context, qpc_mask, hr_qp);
5241 if (ret) {
5242 ibdev_err(ibdev, "failed to modify QP, ret = %d.\n", ret);
5243 goto out;
5244 }
5245
5246 hr_qp->state = new_state;
5247
5248 hns_roce_v2_record_opt_fields(ibqp, attr, attr_mask);
5249
5250 if (new_state == IB_QPS_RESET && !ibqp->uobject)
5251 clear_qp(hr_qp);
5252
5253 out:
5254 return ret;
5255 }
5256
to_ib_qp_st(enum hns_roce_v2_qp_state state)5257 static int to_ib_qp_st(enum hns_roce_v2_qp_state state)
5258 {
5259 static const enum ib_qp_state map[] = {
5260 [HNS_ROCE_QP_ST_RST] = IB_QPS_RESET,
5261 [HNS_ROCE_QP_ST_INIT] = IB_QPS_INIT,
5262 [HNS_ROCE_QP_ST_RTR] = IB_QPS_RTR,
5263 [HNS_ROCE_QP_ST_RTS] = IB_QPS_RTS,
5264 [HNS_ROCE_QP_ST_SQD] = IB_QPS_SQD,
5265 [HNS_ROCE_QP_ST_SQER] = IB_QPS_SQE,
5266 [HNS_ROCE_QP_ST_ERR] = IB_QPS_ERR,
5267 [HNS_ROCE_QP_ST_SQ_DRAINING] = IB_QPS_SQD
5268 };
5269
5270 return (state < ARRAY_SIZE(map)) ? map[state] : -1;
5271 }
5272
hns_roce_v2_query_qpc(struct hns_roce_dev * hr_dev,u32 qpn,void * buffer)5273 static int hns_roce_v2_query_qpc(struct hns_roce_dev *hr_dev, u32 qpn,
5274 void *buffer)
5275 {
5276 struct hns_roce_cmd_mailbox *mailbox;
5277 int ret;
5278
5279 mailbox = hns_roce_alloc_cmd_mailbox(hr_dev);
5280 if (IS_ERR(mailbox))
5281 return PTR_ERR(mailbox);
5282
5283 ret = hns_roce_cmd_mbox(hr_dev, 0, mailbox->dma, HNS_ROCE_CMD_QUERY_QPC,
5284 qpn);
5285 if (ret)
5286 goto out;
5287
5288 memcpy(buffer, mailbox->buf, hr_dev->caps.qpc_sz);
5289
5290 out:
5291 hns_roce_free_cmd_mailbox(hr_dev, mailbox);
5292 return ret;
5293 }
5294
get_qp_timeout_attr(struct hns_roce_dev * hr_dev,struct hns_roce_v2_qp_context * context)5295 static u8 get_qp_timeout_attr(struct hns_roce_dev *hr_dev,
5296 struct hns_roce_v2_qp_context *context)
5297 {
5298 u8 timeout;
5299
5300 timeout = (u8)hr_reg_read(context, QPC_AT);
5301 if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08)
5302 timeout -= HNS_ROCE_V2_QP_ACK_TIMEOUT_OFS_HIP08;
5303
5304 return timeout;
5305 }
5306
hns_roce_v2_query_qp(struct ib_qp * ibqp,struct ib_qp_attr * qp_attr,int qp_attr_mask,struct ib_qp_init_attr * qp_init_attr)5307 static int hns_roce_v2_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
5308 int qp_attr_mask,
5309 struct ib_qp_init_attr *qp_init_attr)
5310 {
5311 struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
5312 struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
5313 struct hns_roce_v2_qp_context context = {};
5314 struct ib_device *ibdev = &hr_dev->ib_dev;
5315 int tmp_qp_state;
5316 int state;
5317 int ret;
5318
5319 memset(qp_attr, 0, sizeof(*qp_attr));
5320 memset(qp_init_attr, 0, sizeof(*qp_init_attr));
5321
5322 mutex_lock(&hr_qp->mutex);
5323
5324 if (hr_qp->state == IB_QPS_RESET) {
5325 qp_attr->qp_state = IB_QPS_RESET;
5326 ret = 0;
5327 goto done;
5328 }
5329
5330 ret = hns_roce_v2_query_qpc(hr_dev, hr_qp->qpn, &context);
5331 if (ret) {
5332 ibdev_err(ibdev, "failed to query QPC, ret = %d.\n", ret);
5333 ret = -EINVAL;
5334 goto out;
5335 }
5336
5337 state = hr_reg_read(&context, QPC_QP_ST);
5338 tmp_qp_state = to_ib_qp_st((enum hns_roce_v2_qp_state)state);
5339 if (tmp_qp_state == -1) {
5340 ibdev_err(ibdev, "Illegal ib_qp_state\n");
5341 ret = -EINVAL;
5342 goto out;
5343 }
5344 hr_qp->state = (u8)tmp_qp_state;
5345 qp_attr->qp_state = (enum ib_qp_state)hr_qp->state;
5346 qp_attr->path_mtu = (enum ib_mtu)hr_reg_read(&context, QPC_MTU);
5347 qp_attr->path_mig_state = IB_MIG_ARMED;
5348 qp_attr->ah_attr.type = RDMA_AH_ATTR_TYPE_ROCE;
5349 if (hr_qp->ibqp.qp_type == IB_QPT_UD)
5350 qp_attr->qkey = le32_to_cpu(context.qkey_xrcd);
5351
5352 qp_attr->rq_psn = hr_reg_read(&context, QPC_RX_REQ_EPSN);
5353 qp_attr->sq_psn = (u32)hr_reg_read(&context, QPC_SQ_CUR_PSN);
5354 qp_attr->dest_qp_num = hr_reg_read(&context, QPC_DQPN);
5355 qp_attr->qp_access_flags =
5356 ((hr_reg_read(&context, QPC_RRE)) << V2_QP_RRE_S) |
5357 ((hr_reg_read(&context, QPC_RWE)) << V2_QP_RWE_S) |
5358 ((hr_reg_read(&context, QPC_ATE)) << V2_QP_ATE_S);
5359
5360 if (hr_qp->ibqp.qp_type == IB_QPT_RC ||
5361 hr_qp->ibqp.qp_type == IB_QPT_XRC_INI ||
5362 hr_qp->ibqp.qp_type == IB_QPT_XRC_TGT) {
5363 struct ib_global_route *grh =
5364 rdma_ah_retrieve_grh(&qp_attr->ah_attr);
5365
5366 rdma_ah_set_sl(&qp_attr->ah_attr,
5367 hr_reg_read(&context, QPC_SL));
5368 rdma_ah_set_port_num(&qp_attr->ah_attr, hr_qp->port + 1);
5369 rdma_ah_set_ah_flags(&qp_attr->ah_attr, IB_AH_GRH);
5370 grh->flow_label = hr_reg_read(&context, QPC_FL);
5371 grh->sgid_index = hr_reg_read(&context, QPC_GMV_IDX);
5372 grh->hop_limit = hr_reg_read(&context, QPC_HOPLIMIT);
5373 grh->traffic_class = hr_reg_read(&context, QPC_TC);
5374
5375 memcpy(grh->dgid.raw, context.dgid, sizeof(grh->dgid.raw));
5376 }
5377
5378 qp_attr->port_num = hr_qp->port + 1;
5379 qp_attr->sq_draining = 0;
5380 qp_attr->max_rd_atomic = 1 << hr_reg_read(&context, QPC_SR_MAX);
5381 qp_attr->max_dest_rd_atomic = 1 << hr_reg_read(&context, QPC_RR_MAX);
5382
5383 qp_attr->min_rnr_timer = (u8)hr_reg_read(&context, QPC_MIN_RNR_TIME);
5384 qp_attr->timeout = get_qp_timeout_attr(hr_dev, &context);
5385 qp_attr->retry_cnt = hr_reg_read(&context, QPC_RETRY_NUM_INIT);
5386 qp_attr->rnr_retry = hr_reg_read(&context, QPC_RNR_NUM_INIT);
5387
5388 done:
5389 qp_attr->cur_qp_state = qp_attr->qp_state;
5390 qp_attr->cap.max_recv_wr = hr_qp->rq.wqe_cnt;
5391 qp_attr->cap.max_recv_sge = hr_qp->rq.max_gs - hr_qp->rq.rsv_sge;
5392 qp_attr->cap.max_inline_data = hr_qp->max_inline_data;
5393
5394 qp_attr->cap.max_send_wr = hr_qp->sq.wqe_cnt;
5395 qp_attr->cap.max_send_sge = hr_qp->sq.max_gs;
5396
5397 qp_init_attr->qp_context = ibqp->qp_context;
5398 qp_init_attr->qp_type = ibqp->qp_type;
5399 qp_init_attr->recv_cq = ibqp->recv_cq;
5400 qp_init_attr->send_cq = ibqp->send_cq;
5401 qp_init_attr->srq = ibqp->srq;
5402 qp_init_attr->cap = qp_attr->cap;
5403 qp_init_attr->sq_sig_type = hr_qp->sq_signal_bits;
5404
5405 out:
5406 mutex_unlock(&hr_qp->mutex);
5407 return ret;
5408 }
5409
modify_qp_is_ok(struct hns_roce_qp * hr_qp)5410 static inline int modify_qp_is_ok(struct hns_roce_qp *hr_qp)
5411 {
5412 return ((hr_qp->ibqp.qp_type == IB_QPT_RC ||
5413 hr_qp->ibqp.qp_type == IB_QPT_UD ||
5414 hr_qp->ibqp.qp_type == IB_QPT_XRC_INI ||
5415 hr_qp->ibqp.qp_type == IB_QPT_XRC_TGT) &&
5416 hr_qp->state != IB_QPS_RESET);
5417 }
5418
hns_roce_v2_destroy_qp_common(struct hns_roce_dev * hr_dev,struct hns_roce_qp * hr_qp,struct ib_udata * udata)5419 static int hns_roce_v2_destroy_qp_common(struct hns_roce_dev *hr_dev,
5420 struct hns_roce_qp *hr_qp,
5421 struct ib_udata *udata)
5422 {
5423 struct ib_device *ibdev = &hr_dev->ib_dev;
5424 struct hns_roce_cq *send_cq, *recv_cq;
5425 unsigned long flags;
5426 int ret = 0;
5427
5428 if (modify_qp_is_ok(hr_qp)) {
5429 /* Modify qp to reset before destroying qp */
5430 ret = hns_roce_v2_modify_qp(&hr_qp->ibqp, NULL, 0,
5431 hr_qp->state, IB_QPS_RESET, udata);
5432 if (ret)
5433 ibdev_err(ibdev,
5434 "failed to modify QP to RST, ret = %d.\n",
5435 ret);
5436 }
5437
5438 send_cq = hr_qp->ibqp.send_cq ? to_hr_cq(hr_qp->ibqp.send_cq) : NULL;
5439 recv_cq = hr_qp->ibqp.recv_cq ? to_hr_cq(hr_qp->ibqp.recv_cq) : NULL;
5440
5441 spin_lock_irqsave(&hr_dev->qp_list_lock, flags);
5442 hns_roce_lock_cqs(send_cq, recv_cq);
5443
5444 if (!udata) {
5445 if (recv_cq)
5446 __hns_roce_v2_cq_clean(recv_cq, hr_qp->qpn,
5447 (hr_qp->ibqp.srq ?
5448 to_hr_srq(hr_qp->ibqp.srq) :
5449 NULL));
5450
5451 if (send_cq && send_cq != recv_cq)
5452 __hns_roce_v2_cq_clean(send_cq, hr_qp->qpn, NULL);
5453 }
5454
5455 hns_roce_qp_remove(hr_dev, hr_qp);
5456
5457 hns_roce_unlock_cqs(send_cq, recv_cq);
5458 spin_unlock_irqrestore(&hr_dev->qp_list_lock, flags);
5459
5460 return ret;
5461 }
5462
hns_roce_v2_destroy_qp(struct ib_qp * ibqp,struct ib_udata * udata)5463 int hns_roce_v2_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata)
5464 {
5465 struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
5466 struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
5467 int ret;
5468
5469 ret = hns_roce_v2_destroy_qp_common(hr_dev, hr_qp, udata);
5470 if (ret)
5471 ibdev_err(&hr_dev->ib_dev,
5472 "failed to destroy QP, QPN = 0x%06lx, ret = %d.\n",
5473 hr_qp->qpn, ret);
5474
5475 hns_roce_qp_destroy(hr_dev, hr_qp, udata);
5476
5477 return 0;
5478 }
5479
hns_roce_v2_qp_flow_control_init(struct hns_roce_dev * hr_dev,struct hns_roce_qp * hr_qp)5480 static int hns_roce_v2_qp_flow_control_init(struct hns_roce_dev *hr_dev,
5481 struct hns_roce_qp *hr_qp)
5482 {
5483 struct ib_device *ibdev = &hr_dev->ib_dev;
5484 struct hns_roce_sccc_clr_done *resp;
5485 struct hns_roce_sccc_clr *clr;
5486 struct hns_roce_cmq_desc desc;
5487 int ret, i;
5488
5489 if (hr_dev->pci_dev->revision >= PCI_REVISION_ID_HIP09)
5490 return 0;
5491
5492 mutex_lock(&hr_dev->qp_table.scc_mutex);
5493
5494 /* set scc ctx clear done flag */
5495 hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_RESET_SCCC, false);
5496 ret = hns_roce_cmq_send(hr_dev, &desc, 1);
5497 if (ret) {
5498 ibdev_err(ibdev, "failed to reset SCC ctx, ret = %d.\n", ret);
5499 goto out;
5500 }
5501
5502 /* clear scc context */
5503 hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_CLR_SCCC, false);
5504 clr = (struct hns_roce_sccc_clr *)desc.data;
5505 clr->qpn = cpu_to_le32(hr_qp->qpn);
5506 ret = hns_roce_cmq_send(hr_dev, &desc, 1);
5507 if (ret) {
5508 ibdev_err(ibdev, "failed to clear SCC ctx, ret = %d.\n", ret);
5509 goto out;
5510 }
5511
5512 /* query scc context clear is done or not */
5513 resp = (struct hns_roce_sccc_clr_done *)desc.data;
5514 for (i = 0; i <= HNS_ROCE_CMQ_SCC_CLR_DONE_CNT; i++) {
5515 hns_roce_cmq_setup_basic_desc(&desc,
5516 HNS_ROCE_OPC_QUERY_SCCC, true);
5517 ret = hns_roce_cmq_send(hr_dev, &desc, 1);
5518 if (ret) {
5519 ibdev_err(ibdev, "failed to query clr cmq, ret = %d\n",
5520 ret);
5521 goto out;
5522 }
5523
5524 if (resp->clr_done)
5525 goto out;
5526
5527 msleep(20);
5528 }
5529
5530 ibdev_err(ibdev, "query SCC clr done flag overtime.\n");
5531 ret = -ETIMEDOUT;
5532
5533 out:
5534 mutex_unlock(&hr_dev->qp_table.scc_mutex);
5535 return ret;
5536 }
5537
5538 #define DMA_IDX_SHIFT 3
5539 #define DMA_WQE_SHIFT 3
5540
hns_roce_v2_write_srqc_index_queue(struct hns_roce_srq * srq,struct hns_roce_srq_context * ctx)5541 static int hns_roce_v2_write_srqc_index_queue(struct hns_roce_srq *srq,
5542 struct hns_roce_srq_context *ctx)
5543 {
5544 struct hns_roce_idx_que *idx_que = &srq->idx_que;
5545 struct ib_device *ibdev = srq->ibsrq.device;
5546 struct hns_roce_dev *hr_dev = to_hr_dev(ibdev);
5547 u64 mtts_idx[MTT_MIN_COUNT] = {};
5548 dma_addr_t dma_handle_idx = 0;
5549 int ret;
5550
5551 /* Get physical address of idx que buf */
5552 ret = hns_roce_mtr_find(hr_dev, &idx_que->mtr, 0, mtts_idx,
5553 ARRAY_SIZE(mtts_idx), &dma_handle_idx);
5554 if (ret < 1) {
5555 ibdev_err(ibdev, "failed to find mtr for SRQ idx, ret = %d.\n",
5556 ret);
5557 return -ENOBUFS;
5558 }
5559
5560 hr_reg_write(ctx, SRQC_IDX_HOP_NUM,
5561 to_hr_hem_hopnum(hr_dev->caps.idx_hop_num, srq->wqe_cnt));
5562
5563 hr_reg_write(ctx, SRQC_IDX_BT_BA_L, dma_handle_idx >> DMA_IDX_SHIFT);
5564 hr_reg_write(ctx, SRQC_IDX_BT_BA_H,
5565 upper_32_bits(dma_handle_idx >> DMA_IDX_SHIFT));
5566
5567 hr_reg_write(ctx, SRQC_IDX_BA_PG_SZ,
5568 to_hr_hw_page_shift(idx_que->mtr.hem_cfg.ba_pg_shift));
5569 hr_reg_write(ctx, SRQC_IDX_BUF_PG_SZ,
5570 to_hr_hw_page_shift(idx_que->mtr.hem_cfg.buf_pg_shift));
5571
5572 hr_reg_write(ctx, SRQC_IDX_CUR_BLK_ADDR_L,
5573 to_hr_hw_page_addr(mtts_idx[0]));
5574 hr_reg_write(ctx, SRQC_IDX_CUR_BLK_ADDR_H,
5575 upper_32_bits(to_hr_hw_page_addr(mtts_idx[0])));
5576
5577 hr_reg_write(ctx, SRQC_IDX_NXT_BLK_ADDR_L,
5578 to_hr_hw_page_addr(mtts_idx[1]));
5579 hr_reg_write(ctx, SRQC_IDX_NXT_BLK_ADDR_H,
5580 upper_32_bits(to_hr_hw_page_addr(mtts_idx[1])));
5581
5582 return 0;
5583 }
5584
hns_roce_v2_write_srqc(struct hns_roce_srq * srq,void * mb_buf)5585 static int hns_roce_v2_write_srqc(struct hns_roce_srq *srq, void *mb_buf)
5586 {
5587 struct ib_device *ibdev = srq->ibsrq.device;
5588 struct hns_roce_dev *hr_dev = to_hr_dev(ibdev);
5589 struct hns_roce_srq_context *ctx = mb_buf;
5590 u64 mtts_wqe[MTT_MIN_COUNT] = {};
5591 dma_addr_t dma_handle_wqe = 0;
5592 int ret;
5593
5594 memset(ctx, 0, sizeof(*ctx));
5595
5596 /* Get the physical address of srq buf */
5597 ret = hns_roce_mtr_find(hr_dev, &srq->buf_mtr, 0, mtts_wqe,
5598 ARRAY_SIZE(mtts_wqe), &dma_handle_wqe);
5599 if (ret < 1) {
5600 ibdev_err(ibdev, "failed to find mtr for SRQ WQE, ret = %d.\n",
5601 ret);
5602 return -ENOBUFS;
5603 }
5604
5605 hr_reg_write(ctx, SRQC_SRQ_ST, 1);
5606 hr_reg_write_bool(ctx, SRQC_SRQ_TYPE,
5607 srq->ibsrq.srq_type == IB_SRQT_XRC);
5608 hr_reg_write(ctx, SRQC_PD, to_hr_pd(srq->ibsrq.pd)->pdn);
5609 hr_reg_write(ctx, SRQC_SRQN, srq->srqn);
5610 hr_reg_write(ctx, SRQC_XRCD, srq->xrcdn);
5611 hr_reg_write(ctx, SRQC_XRC_CQN, srq->cqn);
5612 hr_reg_write(ctx, SRQC_SHIFT, ilog2(srq->wqe_cnt));
5613 hr_reg_write(ctx, SRQC_RQWS,
5614 srq->max_gs <= 0 ? 0 : fls(srq->max_gs - 1));
5615
5616 hr_reg_write(ctx, SRQC_WQE_HOP_NUM,
5617 to_hr_hem_hopnum(hr_dev->caps.srqwqe_hop_num,
5618 srq->wqe_cnt));
5619
5620 hr_reg_write(ctx, SRQC_WQE_BT_BA_L, dma_handle_wqe >> DMA_WQE_SHIFT);
5621 hr_reg_write(ctx, SRQC_WQE_BT_BA_H,
5622 upper_32_bits(dma_handle_wqe >> DMA_WQE_SHIFT));
5623
5624 hr_reg_write(ctx, SRQC_WQE_BA_PG_SZ,
5625 to_hr_hw_page_shift(srq->buf_mtr.hem_cfg.ba_pg_shift));
5626 hr_reg_write(ctx, SRQC_WQE_BUF_PG_SZ,
5627 to_hr_hw_page_shift(srq->buf_mtr.hem_cfg.buf_pg_shift));
5628
5629 return hns_roce_v2_write_srqc_index_queue(srq, ctx);
5630 }
5631
hns_roce_v2_modify_srq(struct ib_srq * ibsrq,struct ib_srq_attr * srq_attr,enum ib_srq_attr_mask srq_attr_mask,struct ib_udata * udata)5632 static int hns_roce_v2_modify_srq(struct ib_srq *ibsrq,
5633 struct ib_srq_attr *srq_attr,
5634 enum ib_srq_attr_mask srq_attr_mask,
5635 struct ib_udata *udata)
5636 {
5637 struct hns_roce_dev *hr_dev = to_hr_dev(ibsrq->device);
5638 struct hns_roce_srq *srq = to_hr_srq(ibsrq);
5639 struct hns_roce_srq_context *srq_context;
5640 struct hns_roce_srq_context *srqc_mask;
5641 struct hns_roce_cmd_mailbox *mailbox;
5642 int ret;
5643
5644 /* Resizing SRQs is not supported yet */
5645 if (srq_attr_mask & IB_SRQ_MAX_WR)
5646 return -EOPNOTSUPP;
5647
5648 if (srq_attr_mask & IB_SRQ_LIMIT) {
5649 if (srq_attr->srq_limit > srq->wqe_cnt)
5650 return -EINVAL;
5651
5652 mailbox = hns_roce_alloc_cmd_mailbox(hr_dev);
5653 if (IS_ERR(mailbox))
5654 return PTR_ERR(mailbox);
5655
5656 srq_context = mailbox->buf;
5657 srqc_mask = (struct hns_roce_srq_context *)mailbox->buf + 1;
5658
5659 memset(srqc_mask, 0xff, sizeof(*srqc_mask));
5660
5661 hr_reg_write(srq_context, SRQC_LIMIT_WL, srq_attr->srq_limit);
5662 hr_reg_clear(srqc_mask, SRQC_LIMIT_WL);
5663
5664 ret = hns_roce_cmd_mbox(hr_dev, mailbox->dma, 0,
5665 HNS_ROCE_CMD_MODIFY_SRQC, srq->srqn);
5666 hns_roce_free_cmd_mailbox(hr_dev, mailbox);
5667 if (ret) {
5668 ibdev_err(&hr_dev->ib_dev,
5669 "failed to handle cmd of modifying SRQ, ret = %d.\n",
5670 ret);
5671 return ret;
5672 }
5673 }
5674
5675 return 0;
5676 }
5677
hns_roce_v2_query_srq(struct ib_srq * ibsrq,struct ib_srq_attr * attr)5678 static int hns_roce_v2_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr)
5679 {
5680 struct hns_roce_dev *hr_dev = to_hr_dev(ibsrq->device);
5681 struct hns_roce_srq *srq = to_hr_srq(ibsrq);
5682 struct hns_roce_srq_context *srq_context;
5683 struct hns_roce_cmd_mailbox *mailbox;
5684 int ret;
5685
5686 mailbox = hns_roce_alloc_cmd_mailbox(hr_dev);
5687 if (IS_ERR(mailbox))
5688 return PTR_ERR(mailbox);
5689
5690 srq_context = mailbox->buf;
5691 ret = hns_roce_cmd_mbox(hr_dev, 0, mailbox->dma,
5692 HNS_ROCE_CMD_QUERY_SRQC, srq->srqn);
5693 if (ret) {
5694 ibdev_err(&hr_dev->ib_dev,
5695 "failed to process cmd of querying SRQ, ret = %d.\n",
5696 ret);
5697 goto out;
5698 }
5699
5700 attr->srq_limit = hr_reg_read(srq_context, SRQC_LIMIT_WL);
5701 attr->max_wr = srq->wqe_cnt;
5702 attr->max_sge = srq->max_gs - srq->rsv_sge;
5703
5704 out:
5705 hns_roce_free_cmd_mailbox(hr_dev, mailbox);
5706 return ret;
5707 }
5708
hns_roce_v2_modify_cq(struct ib_cq * cq,u16 cq_count,u16 cq_period)5709 static int hns_roce_v2_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period)
5710 {
5711 struct hns_roce_dev *hr_dev = to_hr_dev(cq->device);
5712 struct hns_roce_v2_cq_context *cq_context;
5713 struct hns_roce_cq *hr_cq = to_hr_cq(cq);
5714 struct hns_roce_v2_cq_context *cqc_mask;
5715 struct hns_roce_cmd_mailbox *mailbox;
5716 int ret;
5717
5718 mailbox = hns_roce_alloc_cmd_mailbox(hr_dev);
5719 if (IS_ERR(mailbox))
5720 return PTR_ERR(mailbox);
5721
5722 cq_context = mailbox->buf;
5723 cqc_mask = (struct hns_roce_v2_cq_context *)mailbox->buf + 1;
5724
5725 memset(cqc_mask, 0xff, sizeof(*cqc_mask));
5726
5727 hr_reg_write(cq_context, CQC_CQ_MAX_CNT, cq_count);
5728 hr_reg_clear(cqc_mask, CQC_CQ_MAX_CNT);
5729
5730 if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08) {
5731 if (cq_period * HNS_ROCE_CLOCK_ADJUST > USHRT_MAX) {
5732 dev_info(hr_dev->dev,
5733 "cq_period(%u) reached the upper limit, adjusted to 65.\n",
5734 cq_period);
5735 cq_period = HNS_ROCE_MAX_CQ_PERIOD;
5736 }
5737 cq_period *= HNS_ROCE_CLOCK_ADJUST;
5738 }
5739 hr_reg_write(cq_context, CQC_CQ_PERIOD, cq_period);
5740 hr_reg_clear(cqc_mask, CQC_CQ_PERIOD);
5741
5742 ret = hns_roce_cmd_mbox(hr_dev, mailbox->dma, 0,
5743 HNS_ROCE_CMD_MODIFY_CQC, hr_cq->cqn);
5744 hns_roce_free_cmd_mailbox(hr_dev, mailbox);
5745 if (ret)
5746 ibdev_err(&hr_dev->ib_dev,
5747 "failed to process cmd when modifying CQ, ret = %d.\n",
5748 ret);
5749
5750 return ret;
5751 }
5752
hns_roce_v2_query_cqc(struct hns_roce_dev * hr_dev,u32 cqn,void * buffer)5753 static int hns_roce_v2_query_cqc(struct hns_roce_dev *hr_dev, u32 cqn,
5754 void *buffer)
5755 {
5756 struct hns_roce_v2_cq_context *context;
5757 struct hns_roce_cmd_mailbox *mailbox;
5758 int ret;
5759
5760 mailbox = hns_roce_alloc_cmd_mailbox(hr_dev);
5761 if (IS_ERR(mailbox))
5762 return PTR_ERR(mailbox);
5763
5764 context = mailbox->buf;
5765 ret = hns_roce_cmd_mbox(hr_dev, 0, mailbox->dma,
5766 HNS_ROCE_CMD_QUERY_CQC, cqn);
5767 if (ret) {
5768 ibdev_err(&hr_dev->ib_dev,
5769 "failed to process cmd when querying CQ, ret = %d.\n",
5770 ret);
5771 goto err_mailbox;
5772 }
5773
5774 memcpy(buffer, context, sizeof(*context));
5775
5776 err_mailbox:
5777 hns_roce_free_cmd_mailbox(hr_dev, mailbox);
5778
5779 return ret;
5780 }
5781
hns_roce_v2_query_mpt(struct hns_roce_dev * hr_dev,u32 key,void * buffer)5782 static int hns_roce_v2_query_mpt(struct hns_roce_dev *hr_dev, u32 key,
5783 void *buffer)
5784 {
5785 struct hns_roce_v2_mpt_entry *context;
5786 struct hns_roce_cmd_mailbox *mailbox;
5787 int ret;
5788
5789 mailbox = hns_roce_alloc_cmd_mailbox(hr_dev);
5790 if (IS_ERR(mailbox))
5791 return PTR_ERR(mailbox);
5792
5793 context = mailbox->buf;
5794 ret = hns_roce_cmd_mbox(hr_dev, 0, mailbox->dma, HNS_ROCE_CMD_QUERY_MPT,
5795 key_to_hw_index(key));
5796 if (ret) {
5797 ibdev_err(&hr_dev->ib_dev,
5798 "failed to process cmd when querying MPT, ret = %d.\n",
5799 ret);
5800 goto err_mailbox;
5801 }
5802
5803 memcpy(buffer, context, sizeof(*context));
5804
5805 err_mailbox:
5806 hns_roce_free_cmd_mailbox(hr_dev, mailbox);
5807
5808 return ret;
5809 }
5810
hns_roce_irq_work_handle(struct work_struct * work)5811 static void hns_roce_irq_work_handle(struct work_struct *work)
5812 {
5813 struct hns_roce_work *irq_work =
5814 container_of(work, struct hns_roce_work, work);
5815 struct ib_device *ibdev = &irq_work->hr_dev->ib_dev;
5816
5817 switch (irq_work->event_type) {
5818 case HNS_ROCE_EVENT_TYPE_PATH_MIG:
5819 ibdev_info(ibdev, "path migrated succeeded.\n");
5820 break;
5821 case HNS_ROCE_EVENT_TYPE_PATH_MIG_FAILED:
5822 ibdev_warn(ibdev, "path migration failed.\n");
5823 break;
5824 case HNS_ROCE_EVENT_TYPE_COMM_EST:
5825 break;
5826 case HNS_ROCE_EVENT_TYPE_SQ_DRAINED:
5827 ibdev_dbg(ibdev, "send queue drained.\n");
5828 break;
5829 case HNS_ROCE_EVENT_TYPE_WQ_CATAS_ERROR:
5830 ibdev_err(ibdev, "local work queue 0x%x catast error, sub_event type is: %d\n",
5831 irq_work->queue_num, irq_work->sub_type);
5832 break;
5833 case HNS_ROCE_EVENT_TYPE_INV_REQ_LOCAL_WQ_ERROR:
5834 ibdev_err(ibdev, "invalid request local work queue 0x%x error.\n",
5835 irq_work->queue_num);
5836 break;
5837 case HNS_ROCE_EVENT_TYPE_LOCAL_WQ_ACCESS_ERROR:
5838 ibdev_err(ibdev, "local access violation work queue 0x%x error, sub_event type is: %d\n",
5839 irq_work->queue_num, irq_work->sub_type);
5840 break;
5841 case HNS_ROCE_EVENT_TYPE_SRQ_LIMIT_REACH:
5842 ibdev_dbg(ibdev, "SRQ limit reach.\n");
5843 break;
5844 case HNS_ROCE_EVENT_TYPE_SRQ_LAST_WQE_REACH:
5845 ibdev_dbg(ibdev, "SRQ last wqe reach.\n");
5846 break;
5847 case HNS_ROCE_EVENT_TYPE_SRQ_CATAS_ERROR:
5848 ibdev_err(ibdev, "SRQ catas error.\n");
5849 break;
5850 case HNS_ROCE_EVENT_TYPE_CQ_ACCESS_ERROR:
5851 ibdev_err(ibdev, "CQ 0x%x access err.\n", irq_work->queue_num);
5852 break;
5853 case HNS_ROCE_EVENT_TYPE_CQ_OVERFLOW:
5854 ibdev_warn(ibdev, "CQ 0x%x overflow\n", irq_work->queue_num);
5855 break;
5856 case HNS_ROCE_EVENT_TYPE_DB_OVERFLOW:
5857 ibdev_warn(ibdev, "DB overflow.\n");
5858 break;
5859 case HNS_ROCE_EVENT_TYPE_FLR:
5860 ibdev_warn(ibdev, "function level reset.\n");
5861 break;
5862 case HNS_ROCE_EVENT_TYPE_XRCD_VIOLATION:
5863 ibdev_err(ibdev, "xrc domain violation error.\n");
5864 break;
5865 case HNS_ROCE_EVENT_TYPE_INVALID_XRCETH:
5866 ibdev_err(ibdev, "invalid xrceth error.\n");
5867 break;
5868 default:
5869 break;
5870 }
5871
5872 kfree(irq_work);
5873 }
5874
hns_roce_v2_init_irq_work(struct hns_roce_dev * hr_dev,struct hns_roce_eq * eq,u32 queue_num)5875 static void hns_roce_v2_init_irq_work(struct hns_roce_dev *hr_dev,
5876 struct hns_roce_eq *eq, u32 queue_num)
5877 {
5878 struct hns_roce_work *irq_work;
5879
5880 irq_work = kzalloc(sizeof(struct hns_roce_work), GFP_ATOMIC);
5881 if (!irq_work)
5882 return;
5883
5884 INIT_WORK(&irq_work->work, hns_roce_irq_work_handle);
5885 irq_work->hr_dev = hr_dev;
5886 irq_work->event_type = eq->event_type;
5887 irq_work->sub_type = eq->sub_type;
5888 irq_work->queue_num = queue_num;
5889 queue_work(hr_dev->irq_workq, &irq_work->work);
5890 }
5891
update_eq_db(struct hns_roce_eq * eq)5892 static void update_eq_db(struct hns_roce_eq *eq)
5893 {
5894 struct hns_roce_dev *hr_dev = eq->hr_dev;
5895 struct hns_roce_v2_db eq_db = {};
5896
5897 if (eq->type_flag == HNS_ROCE_AEQ) {
5898 hr_reg_write(&eq_db, EQ_DB_CMD,
5899 eq->arm_st == HNS_ROCE_V2_EQ_ALWAYS_ARMED ?
5900 HNS_ROCE_EQ_DB_CMD_AEQ :
5901 HNS_ROCE_EQ_DB_CMD_AEQ_ARMED);
5902 } else {
5903 hr_reg_write(&eq_db, EQ_DB_TAG, eq->eqn);
5904
5905 hr_reg_write(&eq_db, EQ_DB_CMD,
5906 eq->arm_st == HNS_ROCE_V2_EQ_ALWAYS_ARMED ?
5907 HNS_ROCE_EQ_DB_CMD_CEQ :
5908 HNS_ROCE_EQ_DB_CMD_CEQ_ARMED);
5909 }
5910
5911 hr_reg_write(&eq_db, EQ_DB_CI, eq->cons_index);
5912
5913 hns_roce_write64(hr_dev, (__le32 *)&eq_db, eq->db_reg);
5914 }
5915
next_aeqe_sw_v2(struct hns_roce_eq * eq)5916 static struct hns_roce_aeqe *next_aeqe_sw_v2(struct hns_roce_eq *eq)
5917 {
5918 struct hns_roce_aeqe *aeqe;
5919
5920 aeqe = hns_roce_buf_offset(eq->mtr.kmem,
5921 (eq->cons_index & (eq->entries - 1)) *
5922 eq->eqe_size);
5923
5924 return (hr_reg_read(aeqe, AEQE_OWNER) ^
5925 !!(eq->cons_index & eq->entries)) ? aeqe : NULL;
5926 }
5927
hns_roce_v2_aeq_int(struct hns_roce_dev * hr_dev,struct hns_roce_eq * eq)5928 static irqreturn_t hns_roce_v2_aeq_int(struct hns_roce_dev *hr_dev,
5929 struct hns_roce_eq *eq)
5930 {
5931 struct device *dev = hr_dev->dev;
5932 struct hns_roce_aeqe *aeqe = next_aeqe_sw_v2(eq);
5933 irqreturn_t aeqe_found = IRQ_NONE;
5934 int event_type;
5935 u32 queue_num;
5936 int sub_type;
5937
5938 while (aeqe) {
5939 /* Make sure we read AEQ entry after we have checked the
5940 * ownership bit
5941 */
5942 dma_rmb();
5943
5944 event_type = hr_reg_read(aeqe, AEQE_EVENT_TYPE);
5945 sub_type = hr_reg_read(aeqe, AEQE_SUB_TYPE);
5946 queue_num = hr_reg_read(aeqe, AEQE_EVENT_QUEUE_NUM);
5947
5948 switch (event_type) {
5949 case HNS_ROCE_EVENT_TYPE_PATH_MIG:
5950 case HNS_ROCE_EVENT_TYPE_PATH_MIG_FAILED:
5951 case HNS_ROCE_EVENT_TYPE_COMM_EST:
5952 case HNS_ROCE_EVENT_TYPE_SQ_DRAINED:
5953 case HNS_ROCE_EVENT_TYPE_WQ_CATAS_ERROR:
5954 case HNS_ROCE_EVENT_TYPE_SRQ_LAST_WQE_REACH:
5955 case HNS_ROCE_EVENT_TYPE_INV_REQ_LOCAL_WQ_ERROR:
5956 case HNS_ROCE_EVENT_TYPE_LOCAL_WQ_ACCESS_ERROR:
5957 case HNS_ROCE_EVENT_TYPE_XRCD_VIOLATION:
5958 case HNS_ROCE_EVENT_TYPE_INVALID_XRCETH:
5959 hns_roce_qp_event(hr_dev, queue_num, event_type);
5960 break;
5961 case HNS_ROCE_EVENT_TYPE_SRQ_LIMIT_REACH:
5962 case HNS_ROCE_EVENT_TYPE_SRQ_CATAS_ERROR:
5963 hns_roce_srq_event(hr_dev, queue_num, event_type);
5964 break;
5965 case HNS_ROCE_EVENT_TYPE_CQ_ACCESS_ERROR:
5966 case HNS_ROCE_EVENT_TYPE_CQ_OVERFLOW:
5967 hns_roce_cq_event(hr_dev, queue_num, event_type);
5968 break;
5969 case HNS_ROCE_EVENT_TYPE_MB:
5970 hns_roce_cmd_event(hr_dev,
5971 le16_to_cpu(aeqe->event.cmd.token),
5972 aeqe->event.cmd.status,
5973 le64_to_cpu(aeqe->event.cmd.out_param));
5974 break;
5975 case HNS_ROCE_EVENT_TYPE_DB_OVERFLOW:
5976 case HNS_ROCE_EVENT_TYPE_FLR:
5977 break;
5978 default:
5979 dev_err(dev, "unhandled event %d on EQ %d at idx %u.\n",
5980 event_type, eq->eqn, eq->cons_index);
5981 break;
5982 }
5983
5984 eq->event_type = event_type;
5985 eq->sub_type = sub_type;
5986 ++eq->cons_index;
5987 aeqe_found = IRQ_HANDLED;
5988
5989 hns_roce_v2_init_irq_work(hr_dev, eq, queue_num);
5990
5991 aeqe = next_aeqe_sw_v2(eq);
5992 }
5993
5994 update_eq_db(eq);
5995
5996 return IRQ_RETVAL(aeqe_found);
5997 }
5998
next_ceqe_sw_v2(struct hns_roce_eq * eq)5999 static struct hns_roce_ceqe *next_ceqe_sw_v2(struct hns_roce_eq *eq)
6000 {
6001 struct hns_roce_ceqe *ceqe;
6002
6003 ceqe = hns_roce_buf_offset(eq->mtr.kmem,
6004 (eq->cons_index & (eq->entries - 1)) *
6005 eq->eqe_size);
6006
6007 return (hr_reg_read(ceqe, CEQE_OWNER) ^
6008 !!(eq->cons_index & eq->entries)) ? ceqe : NULL;
6009 }
6010
hns_roce_v2_ceq_int(struct hns_roce_dev * hr_dev,struct hns_roce_eq * eq)6011 static irqreturn_t hns_roce_v2_ceq_int(struct hns_roce_dev *hr_dev,
6012 struct hns_roce_eq *eq)
6013 {
6014 struct hns_roce_ceqe *ceqe = next_ceqe_sw_v2(eq);
6015 irqreturn_t ceqe_found = IRQ_NONE;
6016 u32 cqn;
6017
6018 while (ceqe) {
6019 /* Make sure we read CEQ entry after we have checked the
6020 * ownership bit
6021 */
6022 dma_rmb();
6023
6024 cqn = hr_reg_read(ceqe, CEQE_CQN);
6025
6026 hns_roce_cq_completion(hr_dev, cqn);
6027
6028 ++eq->cons_index;
6029 ceqe_found = IRQ_HANDLED;
6030
6031 ceqe = next_ceqe_sw_v2(eq);
6032 }
6033
6034 update_eq_db(eq);
6035
6036 return IRQ_RETVAL(ceqe_found);
6037 }
6038
hns_roce_v2_msix_interrupt_eq(int irq,void * eq_ptr)6039 static irqreturn_t hns_roce_v2_msix_interrupt_eq(int irq, void *eq_ptr)
6040 {
6041 struct hns_roce_eq *eq = eq_ptr;
6042 struct hns_roce_dev *hr_dev = eq->hr_dev;
6043 irqreturn_t int_work;
6044
6045 if (eq->type_flag == HNS_ROCE_CEQ)
6046 /* Completion event interrupt */
6047 int_work = hns_roce_v2_ceq_int(hr_dev, eq);
6048 else
6049 /* Asynchronous event interrupt */
6050 int_work = hns_roce_v2_aeq_int(hr_dev, eq);
6051
6052 return IRQ_RETVAL(int_work);
6053 }
6054
abnormal_interrupt_basic(struct hns_roce_dev * hr_dev,u32 int_st)6055 static irqreturn_t abnormal_interrupt_basic(struct hns_roce_dev *hr_dev,
6056 u32 int_st)
6057 {
6058 struct pci_dev *pdev = hr_dev->pci_dev;
6059 struct hnae3_ae_dev *ae_dev = pci_get_drvdata(pdev);
6060 const struct hnae3_ae_ops *ops = ae_dev->ops;
6061 irqreturn_t int_work = IRQ_NONE;
6062 u32 int_en;
6063
6064 int_en = roce_read(hr_dev, ROCEE_VF_ABN_INT_EN_REG);
6065
6066 if (int_st & BIT(HNS_ROCE_V2_VF_INT_ST_AEQ_OVERFLOW_S)) {
6067 dev_err(hr_dev->dev, "AEQ overflow!\n");
6068
6069 roce_write(hr_dev, ROCEE_VF_ABN_INT_ST_REG,
6070 1 << HNS_ROCE_V2_VF_INT_ST_AEQ_OVERFLOW_S);
6071
6072 /* Set reset level for reset_event() */
6073 if (ops->set_default_reset_request)
6074 ops->set_default_reset_request(ae_dev,
6075 HNAE3_FUNC_RESET);
6076 if (ops->reset_event)
6077 ops->reset_event(pdev, NULL);
6078
6079 int_en |= 1 << HNS_ROCE_V2_VF_ABN_INT_EN_S;
6080 roce_write(hr_dev, ROCEE_VF_ABN_INT_EN_REG, int_en);
6081
6082 int_work = IRQ_HANDLED;
6083 } else {
6084 dev_err(hr_dev->dev, "there is no basic abn irq found.\n");
6085 }
6086
6087 return IRQ_RETVAL(int_work);
6088 }
6089
fmea_ram_ecc_query(struct hns_roce_dev * hr_dev,struct fmea_ram_ecc * ecc_info)6090 static int fmea_ram_ecc_query(struct hns_roce_dev *hr_dev,
6091 struct fmea_ram_ecc *ecc_info)
6092 {
6093 struct hns_roce_cmq_desc desc;
6094 struct hns_roce_cmq_req *req = (struct hns_roce_cmq_req *)desc.data;
6095 int ret;
6096
6097 hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_QUERY_RAM_ECC, true);
6098 ret = hns_roce_cmq_send(hr_dev, &desc, 1);
6099 if (ret)
6100 return ret;
6101
6102 ecc_info->is_ecc_err = hr_reg_read(req, QUERY_RAM_ECC_1BIT_ERR);
6103 ecc_info->res_type = hr_reg_read(req, QUERY_RAM_ECC_RES_TYPE);
6104 ecc_info->index = hr_reg_read(req, QUERY_RAM_ECC_TAG);
6105
6106 return 0;
6107 }
6108
fmea_recover_gmv(struct hns_roce_dev * hr_dev,u32 idx)6109 static int fmea_recover_gmv(struct hns_roce_dev *hr_dev, u32 idx)
6110 {
6111 struct hns_roce_cmq_desc desc;
6112 struct hns_roce_cmq_req *req = (struct hns_roce_cmq_req *)desc.data;
6113 u32 addr_upper;
6114 u32 addr_low;
6115 int ret;
6116
6117 hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_CFG_GMV_BT, true);
6118 hr_reg_write(req, CFG_GMV_BT_IDX, idx);
6119
6120 ret = hns_roce_cmq_send(hr_dev, &desc, 1);
6121 if (ret) {
6122 dev_err(hr_dev->dev,
6123 "failed to execute cmd to read gmv, ret = %d.\n", ret);
6124 return ret;
6125 }
6126
6127 addr_low = hr_reg_read(req, CFG_GMV_BT_BA_L);
6128 addr_upper = hr_reg_read(req, CFG_GMV_BT_BA_H);
6129
6130 hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_CFG_GMV_BT, false);
6131 hr_reg_write(req, CFG_GMV_BT_BA_L, addr_low);
6132 hr_reg_write(req, CFG_GMV_BT_BA_H, addr_upper);
6133 hr_reg_write(req, CFG_GMV_BT_IDX, idx);
6134
6135 return hns_roce_cmq_send(hr_dev, &desc, 1);
6136 }
6137
fmea_get_ram_res_addr(u32 res_type,__le64 * data)6138 static u64 fmea_get_ram_res_addr(u32 res_type, __le64 *data)
6139 {
6140 if (res_type == ECC_RESOURCE_QPC_TIMER ||
6141 res_type == ECC_RESOURCE_CQC_TIMER ||
6142 res_type == ECC_RESOURCE_SCCC)
6143 return le64_to_cpu(*data);
6144
6145 return le64_to_cpu(*data) << PAGE_SHIFT;
6146 }
6147
fmea_recover_others(struct hns_roce_dev * hr_dev,u32 res_type,u32 index)6148 static int fmea_recover_others(struct hns_roce_dev *hr_dev, u32 res_type,
6149 u32 index)
6150 {
6151 u8 write_bt0_op = fmea_ram_res[res_type].write_bt0_op;
6152 u8 read_bt0_op = fmea_ram_res[res_type].read_bt0_op;
6153 struct hns_roce_cmd_mailbox *mailbox;
6154 u64 addr;
6155 int ret;
6156
6157 mailbox = hns_roce_alloc_cmd_mailbox(hr_dev);
6158 if (IS_ERR(mailbox))
6159 return PTR_ERR(mailbox);
6160
6161 ret = hns_roce_cmd_mbox(hr_dev, 0, mailbox->dma, read_bt0_op, index);
6162 if (ret) {
6163 dev_err(hr_dev->dev,
6164 "failed to execute cmd to read fmea ram, ret = %d.\n",
6165 ret);
6166 goto out;
6167 }
6168
6169 addr = fmea_get_ram_res_addr(res_type, mailbox->buf);
6170
6171 ret = hns_roce_cmd_mbox(hr_dev, addr, 0, write_bt0_op, index);
6172 if (ret)
6173 dev_err(hr_dev->dev,
6174 "failed to execute cmd to write fmea ram, ret = %d.\n",
6175 ret);
6176
6177 out:
6178 hns_roce_free_cmd_mailbox(hr_dev, mailbox);
6179 return ret;
6180 }
6181
fmea_ram_ecc_recover(struct hns_roce_dev * hr_dev,struct fmea_ram_ecc * ecc_info)6182 static void fmea_ram_ecc_recover(struct hns_roce_dev *hr_dev,
6183 struct fmea_ram_ecc *ecc_info)
6184 {
6185 u32 res_type = ecc_info->res_type;
6186 u32 index = ecc_info->index;
6187 int ret;
6188
6189 BUILD_BUG_ON(ARRAY_SIZE(fmea_ram_res) != ECC_RESOURCE_COUNT);
6190
6191 if (res_type >= ECC_RESOURCE_COUNT) {
6192 dev_err(hr_dev->dev, "unsupported fmea ram ecc type %u.\n",
6193 res_type);
6194 return;
6195 }
6196
6197 if (res_type == ECC_RESOURCE_GMV)
6198 ret = fmea_recover_gmv(hr_dev, index);
6199 else
6200 ret = fmea_recover_others(hr_dev, res_type, index);
6201 if (ret)
6202 dev_err(hr_dev->dev,
6203 "failed to recover %s, index = %u, ret = %d.\n",
6204 fmea_ram_res[res_type].name, index, ret);
6205 }
6206
fmea_ram_ecc_work(struct work_struct * ecc_work)6207 static void fmea_ram_ecc_work(struct work_struct *ecc_work)
6208 {
6209 struct hns_roce_dev *hr_dev =
6210 container_of(ecc_work, struct hns_roce_dev, ecc_work);
6211 struct fmea_ram_ecc ecc_info = {};
6212
6213 if (fmea_ram_ecc_query(hr_dev, &ecc_info)) {
6214 dev_err(hr_dev->dev, "failed to query fmea ram ecc.\n");
6215 return;
6216 }
6217
6218 if (!ecc_info.is_ecc_err) {
6219 dev_err(hr_dev->dev, "there is no fmea ram ecc err found.\n");
6220 return;
6221 }
6222
6223 fmea_ram_ecc_recover(hr_dev, &ecc_info);
6224 }
6225
hns_roce_v2_msix_interrupt_abn(int irq,void * dev_id)6226 static irqreturn_t hns_roce_v2_msix_interrupt_abn(int irq, void *dev_id)
6227 {
6228 struct hns_roce_dev *hr_dev = dev_id;
6229 irqreturn_t int_work = IRQ_NONE;
6230 u32 int_st;
6231
6232 int_st = roce_read(hr_dev, ROCEE_VF_ABN_INT_ST_REG);
6233
6234 if (int_st) {
6235 int_work = abnormal_interrupt_basic(hr_dev, int_st);
6236 } else if (hr_dev->pci_dev->revision >= PCI_REVISION_ID_HIP09) {
6237 queue_work(hr_dev->irq_workq, &hr_dev->ecc_work);
6238 int_work = IRQ_HANDLED;
6239 } else {
6240 dev_err(hr_dev->dev, "there is no abnormal irq found.\n");
6241 }
6242
6243 return IRQ_RETVAL(int_work);
6244 }
6245
hns_roce_v2_int_mask_enable(struct hns_roce_dev * hr_dev,int eq_num,u32 enable_flag)6246 static void hns_roce_v2_int_mask_enable(struct hns_roce_dev *hr_dev,
6247 int eq_num, u32 enable_flag)
6248 {
6249 int i;
6250
6251 for (i = 0; i < eq_num; i++)
6252 roce_write(hr_dev, ROCEE_VF_EVENT_INT_EN_REG +
6253 i * EQ_REG_OFFSET, enable_flag);
6254
6255 roce_write(hr_dev, ROCEE_VF_ABN_INT_EN_REG, enable_flag);
6256 roce_write(hr_dev, ROCEE_VF_ABN_INT_CFG_REG, enable_flag);
6257 }
6258
hns_roce_v2_destroy_eqc(struct hns_roce_dev * hr_dev,u32 eqn)6259 static void hns_roce_v2_destroy_eqc(struct hns_roce_dev *hr_dev, u32 eqn)
6260 {
6261 struct device *dev = hr_dev->dev;
6262 int ret;
6263 u8 cmd;
6264
6265 if (eqn < hr_dev->caps.num_comp_vectors)
6266 cmd = HNS_ROCE_CMD_DESTROY_CEQC;
6267 else
6268 cmd = HNS_ROCE_CMD_DESTROY_AEQC;
6269
6270 ret = hns_roce_destroy_hw_ctx(hr_dev, cmd, eqn & HNS_ROCE_V2_EQN_M);
6271 if (ret)
6272 dev_err(dev, "[mailbox cmd] destroy eqc(%u) failed.\n", eqn);
6273 }
6274
free_eq_buf(struct hns_roce_dev * hr_dev,struct hns_roce_eq * eq)6275 static void free_eq_buf(struct hns_roce_dev *hr_dev, struct hns_roce_eq *eq)
6276 {
6277 hns_roce_mtr_destroy(hr_dev, &eq->mtr);
6278 }
6279
init_eq_config(struct hns_roce_dev * hr_dev,struct hns_roce_eq * eq)6280 static void init_eq_config(struct hns_roce_dev *hr_dev, struct hns_roce_eq *eq)
6281 {
6282 eq->db_reg = hr_dev->reg_base + ROCEE_VF_EQ_DB_CFG0_REG;
6283 eq->cons_index = 0;
6284 eq->over_ignore = HNS_ROCE_V2_EQ_OVER_IGNORE_0;
6285 eq->coalesce = HNS_ROCE_V2_EQ_COALESCE_0;
6286 eq->arm_st = HNS_ROCE_V2_EQ_ALWAYS_ARMED;
6287 eq->shift = ilog2((unsigned int)eq->entries);
6288 }
6289
config_eqc(struct hns_roce_dev * hr_dev,struct hns_roce_eq * eq,void * mb_buf)6290 static int config_eqc(struct hns_roce_dev *hr_dev, struct hns_roce_eq *eq,
6291 void *mb_buf)
6292 {
6293 u64 eqe_ba[MTT_MIN_COUNT] = { 0 };
6294 struct hns_roce_eq_context *eqc;
6295 u64 bt_ba = 0;
6296 int count;
6297
6298 eqc = mb_buf;
6299 memset(eqc, 0, sizeof(struct hns_roce_eq_context));
6300
6301 init_eq_config(hr_dev, eq);
6302
6303 /* if not multi-hop, eqe buffer only use one trunk */
6304 count = hns_roce_mtr_find(hr_dev, &eq->mtr, 0, eqe_ba, MTT_MIN_COUNT,
6305 &bt_ba);
6306 if (count < 1) {
6307 dev_err(hr_dev->dev, "failed to find EQE mtr\n");
6308 return -ENOBUFS;
6309 }
6310
6311 hr_reg_write(eqc, EQC_EQ_ST, HNS_ROCE_V2_EQ_STATE_VALID);
6312 hr_reg_write(eqc, EQC_EQE_HOP_NUM, eq->hop_num);
6313 hr_reg_write(eqc, EQC_OVER_IGNORE, eq->over_ignore);
6314 hr_reg_write(eqc, EQC_COALESCE, eq->coalesce);
6315 hr_reg_write(eqc, EQC_ARM_ST, eq->arm_st);
6316 hr_reg_write(eqc, EQC_EQN, eq->eqn);
6317 hr_reg_write(eqc, EQC_EQE_CNT, HNS_ROCE_EQ_INIT_EQE_CNT);
6318 hr_reg_write(eqc, EQC_EQE_BA_PG_SZ,
6319 to_hr_hw_page_shift(eq->mtr.hem_cfg.ba_pg_shift));
6320 hr_reg_write(eqc, EQC_EQE_BUF_PG_SZ,
6321 to_hr_hw_page_shift(eq->mtr.hem_cfg.buf_pg_shift));
6322 hr_reg_write(eqc, EQC_EQ_PROD_INDX, HNS_ROCE_EQ_INIT_PROD_IDX);
6323 hr_reg_write(eqc, EQC_EQ_MAX_CNT, eq->eq_max_cnt);
6324
6325 if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08) {
6326 if (eq->eq_period * HNS_ROCE_CLOCK_ADJUST > USHRT_MAX) {
6327 dev_info(hr_dev->dev, "eq_period(%u) reached the upper limit, adjusted to 65.\n",
6328 eq->eq_period);
6329 eq->eq_period = HNS_ROCE_MAX_EQ_PERIOD;
6330 }
6331 eq->eq_period *= HNS_ROCE_CLOCK_ADJUST;
6332 }
6333
6334 hr_reg_write(eqc, EQC_EQ_PERIOD, eq->eq_period);
6335 hr_reg_write(eqc, EQC_EQE_REPORT_TIMER, HNS_ROCE_EQ_INIT_REPORT_TIMER);
6336 hr_reg_write(eqc, EQC_EQE_BA_L, bt_ba >> 3);
6337 hr_reg_write(eqc, EQC_EQE_BA_H, bt_ba >> 35);
6338 hr_reg_write(eqc, EQC_SHIFT, eq->shift);
6339 hr_reg_write(eqc, EQC_MSI_INDX, HNS_ROCE_EQ_INIT_MSI_IDX);
6340 hr_reg_write(eqc, EQC_CUR_EQE_BA_L, eqe_ba[0] >> 12);
6341 hr_reg_write(eqc, EQC_CUR_EQE_BA_M, eqe_ba[0] >> 28);
6342 hr_reg_write(eqc, EQC_CUR_EQE_BA_H, eqe_ba[0] >> 60);
6343 hr_reg_write(eqc, EQC_EQ_CONS_INDX, HNS_ROCE_EQ_INIT_CONS_IDX);
6344 hr_reg_write(eqc, EQC_NEX_EQE_BA_L, eqe_ba[1] >> 12);
6345 hr_reg_write(eqc, EQC_NEX_EQE_BA_H, eqe_ba[1] >> 44);
6346 hr_reg_write(eqc, EQC_EQE_SIZE, eq->eqe_size == HNS_ROCE_V3_EQE_SIZE);
6347
6348 return 0;
6349 }
6350
alloc_eq_buf(struct hns_roce_dev * hr_dev,struct hns_roce_eq * eq)6351 static int alloc_eq_buf(struct hns_roce_dev *hr_dev, struct hns_roce_eq *eq)
6352 {
6353 struct hns_roce_buf_attr buf_attr = {};
6354 int err;
6355
6356 if (hr_dev->caps.eqe_hop_num == HNS_ROCE_HOP_NUM_0)
6357 eq->hop_num = 0;
6358 else
6359 eq->hop_num = hr_dev->caps.eqe_hop_num;
6360
6361 buf_attr.page_shift = hr_dev->caps.eqe_buf_pg_sz + PAGE_SHIFT;
6362 buf_attr.region[0].size = eq->entries * eq->eqe_size;
6363 buf_attr.region[0].hopnum = eq->hop_num;
6364 buf_attr.region_count = 1;
6365
6366 err = hns_roce_mtr_create(hr_dev, &eq->mtr, &buf_attr,
6367 hr_dev->caps.eqe_ba_pg_sz + PAGE_SHIFT, NULL,
6368 0);
6369 if (err)
6370 dev_err(hr_dev->dev, "failed to alloc EQE mtr, err %d\n", err);
6371
6372 return err;
6373 }
6374
hns_roce_v2_create_eq(struct hns_roce_dev * hr_dev,struct hns_roce_eq * eq,u8 eq_cmd)6375 static int hns_roce_v2_create_eq(struct hns_roce_dev *hr_dev,
6376 struct hns_roce_eq *eq, u8 eq_cmd)
6377 {
6378 struct hns_roce_cmd_mailbox *mailbox;
6379 int ret;
6380
6381 /* Allocate mailbox memory */
6382 mailbox = hns_roce_alloc_cmd_mailbox(hr_dev);
6383 if (IS_ERR(mailbox))
6384 return PTR_ERR(mailbox);
6385
6386 ret = alloc_eq_buf(hr_dev, eq);
6387 if (ret)
6388 goto free_cmd_mbox;
6389
6390 ret = config_eqc(hr_dev, eq, mailbox->buf);
6391 if (ret)
6392 goto err_cmd_mbox;
6393
6394 ret = hns_roce_create_hw_ctx(hr_dev, mailbox, eq_cmd, eq->eqn);
6395 if (ret) {
6396 dev_err(hr_dev->dev, "[mailbox cmd] create eqc failed.\n");
6397 goto err_cmd_mbox;
6398 }
6399
6400 hns_roce_free_cmd_mailbox(hr_dev, mailbox);
6401
6402 return 0;
6403
6404 err_cmd_mbox:
6405 free_eq_buf(hr_dev, eq);
6406
6407 free_cmd_mbox:
6408 hns_roce_free_cmd_mailbox(hr_dev, mailbox);
6409
6410 return ret;
6411 }
6412
__hns_roce_request_irq(struct hns_roce_dev * hr_dev,int irq_num,int comp_num,int aeq_num,int other_num)6413 static int __hns_roce_request_irq(struct hns_roce_dev *hr_dev, int irq_num,
6414 int comp_num, int aeq_num, int other_num)
6415 {
6416 struct hns_roce_eq_table *eq_table = &hr_dev->eq_table;
6417 int i, j;
6418 int ret;
6419
6420 for (i = 0; i < irq_num; i++) {
6421 hr_dev->irq_names[i] = kzalloc(HNS_ROCE_INT_NAME_LEN,
6422 GFP_KERNEL);
6423 if (!hr_dev->irq_names[i]) {
6424 ret = -ENOMEM;
6425 goto err_kzalloc_failed;
6426 }
6427 }
6428
6429 /* irq contains: abnormal + AEQ + CEQ */
6430 for (j = 0; j < other_num; j++)
6431 snprintf((char *)hr_dev->irq_names[j], HNS_ROCE_INT_NAME_LEN,
6432 "hns-abn-%d", j);
6433
6434 for (j = other_num; j < (other_num + aeq_num); j++)
6435 snprintf((char *)hr_dev->irq_names[j], HNS_ROCE_INT_NAME_LEN,
6436 "hns-aeq-%d", j - other_num);
6437
6438 for (j = (other_num + aeq_num); j < irq_num; j++)
6439 snprintf((char *)hr_dev->irq_names[j], HNS_ROCE_INT_NAME_LEN,
6440 "hns-ceq-%d", j - other_num - aeq_num);
6441
6442 for (j = 0; j < irq_num; j++) {
6443 if (j < other_num)
6444 ret = request_irq(hr_dev->irq[j],
6445 hns_roce_v2_msix_interrupt_abn,
6446 0, hr_dev->irq_names[j], hr_dev);
6447
6448 else if (j < (other_num + comp_num))
6449 ret = request_irq(eq_table->eq[j - other_num].irq,
6450 hns_roce_v2_msix_interrupt_eq,
6451 0, hr_dev->irq_names[j + aeq_num],
6452 &eq_table->eq[j - other_num]);
6453 else
6454 ret = request_irq(eq_table->eq[j - other_num].irq,
6455 hns_roce_v2_msix_interrupt_eq,
6456 0, hr_dev->irq_names[j - comp_num],
6457 &eq_table->eq[j - other_num]);
6458 if (ret) {
6459 dev_err(hr_dev->dev, "request irq error!\n");
6460 goto err_request_failed;
6461 }
6462 }
6463
6464 return 0;
6465
6466 err_request_failed:
6467 for (j -= 1; j >= 0; j--)
6468 if (j < other_num)
6469 free_irq(hr_dev->irq[j], hr_dev);
6470 else
6471 free_irq(eq_table->eq[j - other_num].irq,
6472 &eq_table->eq[j - other_num]);
6473
6474 err_kzalloc_failed:
6475 for (i -= 1; i >= 0; i--)
6476 kfree(hr_dev->irq_names[i]);
6477
6478 return ret;
6479 }
6480
__hns_roce_free_irq(struct hns_roce_dev * hr_dev)6481 static void __hns_roce_free_irq(struct hns_roce_dev *hr_dev)
6482 {
6483 int irq_num;
6484 int eq_num;
6485 int i;
6486
6487 eq_num = hr_dev->caps.num_comp_vectors + hr_dev->caps.num_aeq_vectors;
6488 irq_num = eq_num + hr_dev->caps.num_other_vectors;
6489
6490 for (i = 0; i < hr_dev->caps.num_other_vectors; i++)
6491 free_irq(hr_dev->irq[i], hr_dev);
6492
6493 for (i = 0; i < eq_num; i++)
6494 free_irq(hr_dev->eq_table.eq[i].irq, &hr_dev->eq_table.eq[i]);
6495
6496 for (i = 0; i < irq_num; i++)
6497 kfree(hr_dev->irq_names[i]);
6498 }
6499
hns_roce_v2_init_eq_table(struct hns_roce_dev * hr_dev)6500 static int hns_roce_v2_init_eq_table(struct hns_roce_dev *hr_dev)
6501 {
6502 struct hns_roce_eq_table *eq_table = &hr_dev->eq_table;
6503 struct device *dev = hr_dev->dev;
6504 struct hns_roce_eq *eq;
6505 int other_num;
6506 int comp_num;
6507 int aeq_num;
6508 int irq_num;
6509 int eq_num;
6510 u8 eq_cmd;
6511 int ret;
6512 int i;
6513
6514 other_num = hr_dev->caps.num_other_vectors;
6515 comp_num = hr_dev->caps.num_comp_vectors;
6516 aeq_num = hr_dev->caps.num_aeq_vectors;
6517
6518 eq_num = comp_num + aeq_num;
6519 irq_num = eq_num + other_num;
6520
6521 eq_table->eq = kcalloc(eq_num, sizeof(*eq_table->eq), GFP_KERNEL);
6522 if (!eq_table->eq)
6523 return -ENOMEM;
6524
6525 /* create eq */
6526 for (i = 0; i < eq_num; i++) {
6527 eq = &eq_table->eq[i];
6528 eq->hr_dev = hr_dev;
6529 eq->eqn = i;
6530 if (i < comp_num) {
6531 /* CEQ */
6532 eq_cmd = HNS_ROCE_CMD_CREATE_CEQC;
6533 eq->type_flag = HNS_ROCE_CEQ;
6534 eq->entries = hr_dev->caps.ceqe_depth;
6535 eq->eqe_size = hr_dev->caps.ceqe_size;
6536 eq->irq = hr_dev->irq[i + other_num + aeq_num];
6537 eq->eq_max_cnt = HNS_ROCE_CEQ_DEFAULT_BURST_NUM;
6538 eq->eq_period = HNS_ROCE_CEQ_DEFAULT_INTERVAL;
6539 } else {
6540 /* AEQ */
6541 eq_cmd = HNS_ROCE_CMD_CREATE_AEQC;
6542 eq->type_flag = HNS_ROCE_AEQ;
6543 eq->entries = hr_dev->caps.aeqe_depth;
6544 eq->eqe_size = hr_dev->caps.aeqe_size;
6545 eq->irq = hr_dev->irq[i - comp_num + other_num];
6546 eq->eq_max_cnt = HNS_ROCE_AEQ_DEFAULT_BURST_NUM;
6547 eq->eq_period = HNS_ROCE_AEQ_DEFAULT_INTERVAL;
6548 }
6549
6550 ret = hns_roce_v2_create_eq(hr_dev, eq, eq_cmd);
6551 if (ret) {
6552 dev_err(dev, "failed to create eq.\n");
6553 goto err_create_eq_fail;
6554 }
6555 }
6556
6557 INIT_WORK(&hr_dev->ecc_work, fmea_ram_ecc_work);
6558
6559 hr_dev->irq_workq = alloc_ordered_workqueue("hns_roce_irq_workq", 0);
6560 if (!hr_dev->irq_workq) {
6561 dev_err(dev, "failed to create irq workqueue.\n");
6562 ret = -ENOMEM;
6563 goto err_create_eq_fail;
6564 }
6565
6566 ret = __hns_roce_request_irq(hr_dev, irq_num, comp_num, aeq_num,
6567 other_num);
6568 if (ret) {
6569 dev_err(dev, "failed to request irq.\n");
6570 goto err_request_irq_fail;
6571 }
6572
6573 /* enable irq */
6574 hns_roce_v2_int_mask_enable(hr_dev, eq_num, EQ_ENABLE);
6575
6576 return 0;
6577
6578 err_request_irq_fail:
6579 destroy_workqueue(hr_dev->irq_workq);
6580
6581 err_create_eq_fail:
6582 for (i -= 1; i >= 0; i--)
6583 free_eq_buf(hr_dev, &eq_table->eq[i]);
6584 kfree(eq_table->eq);
6585
6586 return ret;
6587 }
6588
hns_roce_v2_cleanup_eq_table(struct hns_roce_dev * hr_dev)6589 static void hns_roce_v2_cleanup_eq_table(struct hns_roce_dev *hr_dev)
6590 {
6591 struct hns_roce_eq_table *eq_table = &hr_dev->eq_table;
6592 int eq_num;
6593 int i;
6594
6595 eq_num = hr_dev->caps.num_comp_vectors + hr_dev->caps.num_aeq_vectors;
6596
6597 /* Disable irq */
6598 hns_roce_v2_int_mask_enable(hr_dev, eq_num, EQ_DISABLE);
6599
6600 __hns_roce_free_irq(hr_dev);
6601 destroy_workqueue(hr_dev->irq_workq);
6602
6603 for (i = 0; i < eq_num; i++) {
6604 hns_roce_v2_destroy_eqc(hr_dev, i);
6605
6606 free_eq_buf(hr_dev, &eq_table->eq[i]);
6607 }
6608
6609 kfree(eq_table->eq);
6610 }
6611
6612 static const struct ib_device_ops hns_roce_v2_dev_ops = {
6613 .destroy_qp = hns_roce_v2_destroy_qp,
6614 .modify_cq = hns_roce_v2_modify_cq,
6615 .poll_cq = hns_roce_v2_poll_cq,
6616 .post_recv = hns_roce_v2_post_recv,
6617 .post_send = hns_roce_v2_post_send,
6618 .query_qp = hns_roce_v2_query_qp,
6619 .req_notify_cq = hns_roce_v2_req_notify_cq,
6620 };
6621
6622 static const struct ib_device_ops hns_roce_v2_dev_srq_ops = {
6623 .modify_srq = hns_roce_v2_modify_srq,
6624 .post_srq_recv = hns_roce_v2_post_srq_recv,
6625 .query_srq = hns_roce_v2_query_srq,
6626 };
6627
6628 static const struct hns_roce_hw hns_roce_hw_v2 = {
6629 .cmq_init = hns_roce_v2_cmq_init,
6630 .cmq_exit = hns_roce_v2_cmq_exit,
6631 .hw_profile = hns_roce_v2_profile,
6632 .hw_init = hns_roce_v2_init,
6633 .hw_exit = hns_roce_v2_exit,
6634 .post_mbox = v2_post_mbox,
6635 .poll_mbox_done = v2_poll_mbox_done,
6636 .chk_mbox_avail = v2_chk_mbox_is_avail,
6637 .set_gid = hns_roce_v2_set_gid,
6638 .set_mac = hns_roce_v2_set_mac,
6639 .write_mtpt = hns_roce_v2_write_mtpt,
6640 .rereg_write_mtpt = hns_roce_v2_rereg_write_mtpt,
6641 .frmr_write_mtpt = hns_roce_v2_frmr_write_mtpt,
6642 .mw_write_mtpt = hns_roce_v2_mw_write_mtpt,
6643 .write_cqc = hns_roce_v2_write_cqc,
6644 .set_hem = hns_roce_v2_set_hem,
6645 .clear_hem = hns_roce_v2_clear_hem,
6646 .modify_qp = hns_roce_v2_modify_qp,
6647 .dereg_mr = hns_roce_v2_dereg_mr,
6648 .qp_flow_control_init = hns_roce_v2_qp_flow_control_init,
6649 .init_eq = hns_roce_v2_init_eq_table,
6650 .cleanup_eq = hns_roce_v2_cleanup_eq_table,
6651 .write_srqc = hns_roce_v2_write_srqc,
6652 .query_cqc = hns_roce_v2_query_cqc,
6653 .query_qpc = hns_roce_v2_query_qpc,
6654 .query_mpt = hns_roce_v2_query_mpt,
6655 .query_hw_counter = hns_roce_hw_v2_query_counter,
6656 .hns_roce_dev_ops = &hns_roce_v2_dev_ops,
6657 .hns_roce_dev_srq_ops = &hns_roce_v2_dev_srq_ops,
6658 };
6659
6660 static const struct pci_device_id hns_roce_hw_v2_pci_tbl[] = {
6661 {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE_RDMA), 0},
6662 {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_25GE_RDMA_MACSEC), 0},
6663 {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_50GE_RDMA), 0},
6664 {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_50GE_RDMA_MACSEC), 0},
6665 {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_100G_RDMA_MACSEC), 0},
6666 {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_200G_RDMA), 0},
6667 {PCI_VDEVICE(HUAWEI, HNAE3_DEV_ID_RDMA_DCB_PFC_VF),
6668 HNAE3_DEV_SUPPORT_ROCE_DCB_BITS},
6669 /* required last entry */
6670 {0, }
6671 };
6672
6673 MODULE_DEVICE_TABLE(pci, hns_roce_hw_v2_pci_tbl);
6674
hns_roce_hw_v2_get_cfg(struct hns_roce_dev * hr_dev,struct hnae3_handle * handle)6675 static void hns_roce_hw_v2_get_cfg(struct hns_roce_dev *hr_dev,
6676 struct hnae3_handle *handle)
6677 {
6678 struct hns_roce_v2_priv *priv = hr_dev->priv;
6679 const struct pci_device_id *id;
6680 int i;
6681
6682 hr_dev->pci_dev = handle->pdev;
6683 id = pci_match_id(hns_roce_hw_v2_pci_tbl, hr_dev->pci_dev);
6684 hr_dev->is_vf = id->driver_data;
6685 hr_dev->dev = &handle->pdev->dev;
6686 hr_dev->hw = &hns_roce_hw_v2;
6687 hr_dev->sdb_offset = ROCEE_DB_SQ_L_0_REG;
6688 hr_dev->odb_offset = hr_dev->sdb_offset;
6689
6690 /* Get info from NIC driver. */
6691 hr_dev->reg_base = handle->rinfo.roce_io_base;
6692 hr_dev->mem_base = handle->rinfo.roce_mem_base;
6693 hr_dev->caps.num_ports = 1;
6694 hr_dev->iboe.netdevs[0] = handle->rinfo.netdev;
6695 hr_dev->iboe.phy_port[0] = 0;
6696
6697 addrconf_addr_eui48((u8 *)&hr_dev->ib_dev.node_guid,
6698 hr_dev->iboe.netdevs[0]->dev_addr);
6699
6700 for (i = 0; i < handle->rinfo.num_vectors; i++)
6701 hr_dev->irq[i] = pci_irq_vector(handle->pdev,
6702 i + handle->rinfo.base_vector);
6703
6704 /* cmd issue mode: 0 is poll, 1 is event */
6705 hr_dev->cmd_mod = 1;
6706 hr_dev->loop_idc = 0;
6707
6708 hr_dev->reset_cnt = handle->ae_algo->ops->ae_dev_reset_cnt(handle);
6709 priv->handle = handle;
6710 }
6711
__hns_roce_hw_v2_init_instance(struct hnae3_handle * handle)6712 static int __hns_roce_hw_v2_init_instance(struct hnae3_handle *handle)
6713 {
6714 struct hns_roce_dev *hr_dev;
6715 int ret;
6716
6717 hr_dev = ib_alloc_device(hns_roce_dev, ib_dev);
6718 if (!hr_dev)
6719 return -ENOMEM;
6720
6721 hr_dev->priv = kzalloc(sizeof(struct hns_roce_v2_priv), GFP_KERNEL);
6722 if (!hr_dev->priv) {
6723 ret = -ENOMEM;
6724 goto error_failed_kzalloc;
6725 }
6726
6727 hns_roce_hw_v2_get_cfg(hr_dev, handle);
6728
6729 ret = hns_roce_init(hr_dev);
6730 if (ret) {
6731 dev_err(hr_dev->dev, "RoCE Engine init failed!\n");
6732 goto error_failed_roce_init;
6733 }
6734
6735 if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08) {
6736 ret = free_mr_init(hr_dev);
6737 if (ret) {
6738 dev_err(hr_dev->dev, "failed to init free mr!\n");
6739 goto error_failed_free_mr_init;
6740 }
6741 }
6742
6743 handle->priv = hr_dev;
6744
6745 return 0;
6746
6747 error_failed_free_mr_init:
6748 hns_roce_exit(hr_dev);
6749
6750 error_failed_roce_init:
6751 kfree(hr_dev->priv);
6752
6753 error_failed_kzalloc:
6754 ib_dealloc_device(&hr_dev->ib_dev);
6755
6756 return ret;
6757 }
6758
__hns_roce_hw_v2_uninit_instance(struct hnae3_handle * handle,bool reset)6759 static void __hns_roce_hw_v2_uninit_instance(struct hnae3_handle *handle,
6760 bool reset)
6761 {
6762 struct hns_roce_dev *hr_dev = handle->priv;
6763
6764 if (!hr_dev)
6765 return;
6766
6767 handle->priv = NULL;
6768
6769 hr_dev->state = HNS_ROCE_DEVICE_STATE_UNINIT;
6770 hns_roce_handle_device_err(hr_dev);
6771
6772 if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08)
6773 free_mr_exit(hr_dev);
6774
6775 hns_roce_exit(hr_dev);
6776 kfree(hr_dev->priv);
6777 ib_dealloc_device(&hr_dev->ib_dev);
6778 }
6779
hns_roce_hw_v2_init_instance(struct hnae3_handle * handle)6780 static int hns_roce_hw_v2_init_instance(struct hnae3_handle *handle)
6781 {
6782 const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
6783 const struct pci_device_id *id;
6784 struct device *dev = &handle->pdev->dev;
6785 int ret;
6786
6787 handle->rinfo.instance_state = HNS_ROCE_STATE_INIT;
6788
6789 if (ops->ae_dev_resetting(handle) || ops->get_hw_reset_stat(handle)) {
6790 handle->rinfo.instance_state = HNS_ROCE_STATE_NON_INIT;
6791 goto reset_chk_err;
6792 }
6793
6794 id = pci_match_id(hns_roce_hw_v2_pci_tbl, handle->pdev);
6795 if (!id)
6796 return 0;
6797
6798 if (id->driver_data && handle->pdev->revision == PCI_REVISION_ID_HIP08)
6799 return 0;
6800
6801 ret = __hns_roce_hw_v2_init_instance(handle);
6802 if (ret) {
6803 handle->rinfo.instance_state = HNS_ROCE_STATE_NON_INIT;
6804 dev_err(dev, "RoCE instance init failed! ret = %d\n", ret);
6805 if (ops->ae_dev_resetting(handle) ||
6806 ops->get_hw_reset_stat(handle))
6807 goto reset_chk_err;
6808 else
6809 return ret;
6810 }
6811
6812 handle->rinfo.instance_state = HNS_ROCE_STATE_INITED;
6813
6814 return 0;
6815
6816 reset_chk_err:
6817 dev_err(dev, "Device is busy in resetting state.\n"
6818 "please retry later.\n");
6819
6820 return -EBUSY;
6821 }
6822
hns_roce_hw_v2_uninit_instance(struct hnae3_handle * handle,bool reset)6823 static void hns_roce_hw_v2_uninit_instance(struct hnae3_handle *handle,
6824 bool reset)
6825 {
6826 if (handle->rinfo.instance_state != HNS_ROCE_STATE_INITED)
6827 return;
6828
6829 handle->rinfo.instance_state = HNS_ROCE_STATE_UNINIT;
6830
6831 __hns_roce_hw_v2_uninit_instance(handle, reset);
6832
6833 handle->rinfo.instance_state = HNS_ROCE_STATE_NON_INIT;
6834 }
hns_roce_hw_v2_reset_notify_down(struct hnae3_handle * handle)6835 static int hns_roce_hw_v2_reset_notify_down(struct hnae3_handle *handle)
6836 {
6837 struct hns_roce_dev *hr_dev;
6838
6839 if (handle->rinfo.instance_state != HNS_ROCE_STATE_INITED) {
6840 set_bit(HNS_ROCE_RST_DIRECT_RETURN, &handle->rinfo.state);
6841 return 0;
6842 }
6843
6844 handle->rinfo.reset_state = HNS_ROCE_STATE_RST_DOWN;
6845 clear_bit(HNS_ROCE_RST_DIRECT_RETURN, &handle->rinfo.state);
6846
6847 hr_dev = handle->priv;
6848 if (!hr_dev)
6849 return 0;
6850
6851 hr_dev->active = false;
6852 hr_dev->dis_db = true;
6853 hr_dev->state = HNS_ROCE_DEVICE_STATE_RST_DOWN;
6854
6855 return 0;
6856 }
6857
hns_roce_hw_v2_reset_notify_init(struct hnae3_handle * handle)6858 static int hns_roce_hw_v2_reset_notify_init(struct hnae3_handle *handle)
6859 {
6860 struct device *dev = &handle->pdev->dev;
6861 int ret;
6862
6863 if (test_and_clear_bit(HNS_ROCE_RST_DIRECT_RETURN,
6864 &handle->rinfo.state)) {
6865 handle->rinfo.reset_state = HNS_ROCE_STATE_RST_INITED;
6866 return 0;
6867 }
6868
6869 handle->rinfo.reset_state = HNS_ROCE_STATE_RST_INIT;
6870
6871 dev_info(&handle->pdev->dev, "In reset process RoCE client reinit.\n");
6872 ret = __hns_roce_hw_v2_init_instance(handle);
6873 if (ret) {
6874 /* when reset notify type is HNAE3_INIT_CLIENT In reset notify
6875 * callback function, RoCE Engine reinitialize. If RoCE reinit
6876 * failed, we should inform NIC driver.
6877 */
6878 handle->priv = NULL;
6879 dev_err(dev, "In reset process RoCE reinit failed %d.\n", ret);
6880 } else {
6881 handle->rinfo.reset_state = HNS_ROCE_STATE_RST_INITED;
6882 dev_info(dev, "reset done, RoCE client reinit finished.\n");
6883 }
6884
6885 return ret;
6886 }
6887
hns_roce_hw_v2_reset_notify_uninit(struct hnae3_handle * handle)6888 static int hns_roce_hw_v2_reset_notify_uninit(struct hnae3_handle *handle)
6889 {
6890 if (test_bit(HNS_ROCE_RST_DIRECT_RETURN, &handle->rinfo.state))
6891 return 0;
6892
6893 handle->rinfo.reset_state = HNS_ROCE_STATE_RST_UNINIT;
6894 dev_info(&handle->pdev->dev, "In reset process RoCE client uninit.\n");
6895 msleep(HNS_ROCE_V2_HW_RST_UNINT_DELAY);
6896 __hns_roce_hw_v2_uninit_instance(handle, false);
6897
6898 return 0;
6899 }
6900
hns_roce_hw_v2_reset_notify(struct hnae3_handle * handle,enum hnae3_reset_notify_type type)6901 static int hns_roce_hw_v2_reset_notify(struct hnae3_handle *handle,
6902 enum hnae3_reset_notify_type type)
6903 {
6904 int ret = 0;
6905
6906 switch (type) {
6907 case HNAE3_DOWN_CLIENT:
6908 ret = hns_roce_hw_v2_reset_notify_down(handle);
6909 break;
6910 case HNAE3_INIT_CLIENT:
6911 ret = hns_roce_hw_v2_reset_notify_init(handle);
6912 break;
6913 case HNAE3_UNINIT_CLIENT:
6914 ret = hns_roce_hw_v2_reset_notify_uninit(handle);
6915 break;
6916 default:
6917 break;
6918 }
6919
6920 return ret;
6921 }
6922
6923 static const struct hnae3_client_ops hns_roce_hw_v2_ops = {
6924 .init_instance = hns_roce_hw_v2_init_instance,
6925 .uninit_instance = hns_roce_hw_v2_uninit_instance,
6926 .reset_notify = hns_roce_hw_v2_reset_notify,
6927 };
6928
6929 static struct hnae3_client hns_roce_hw_v2_client = {
6930 .name = "hns_roce_hw_v2",
6931 .type = HNAE3_CLIENT_ROCE,
6932 .ops = &hns_roce_hw_v2_ops,
6933 };
6934
hns_roce_hw_v2_init(void)6935 static int __init hns_roce_hw_v2_init(void)
6936 {
6937 return hnae3_register_client(&hns_roce_hw_v2_client);
6938 }
6939
hns_roce_hw_v2_exit(void)6940 static void __exit hns_roce_hw_v2_exit(void)
6941 {
6942 hnae3_unregister_client(&hns_roce_hw_v2_client);
6943 }
6944
6945 module_init(hns_roce_hw_v2_init);
6946 module_exit(hns_roce_hw_v2_exit);
6947
6948 MODULE_LICENSE("Dual BSD/GPL");
6949 MODULE_AUTHOR("Wei Hu <xavier.huwei@huawei.com>");
6950 MODULE_AUTHOR("Lijun Ou <oulijun@huawei.com>");
6951 MODULE_AUTHOR("Shaobo Xu <xushaobo2@huawei.com>");
6952 MODULE_DESCRIPTION("Hisilicon Hip08 Family RoCE Driver");
6953