1 // SPDX-License-Identifier: GPL-2.0+ 2 // Copyright (c) 2016-2017 Hisilicon Limited. 3 4 #include "hclge_main.h" 5 #include "hclge_mbx.h" 6 #include "hnae3.h" 7 8 /* hclge_gen_resp_to_vf: used to generate a synchronous response to VF when PF 9 * receives a mailbox message from VF. 10 * @vport: pointer to struct hclge_vport 11 * @vf_to_pf_req: pointer to hclge_mbx_vf_to_pf_cmd of the original mailbox 12 * message 13 * @resp_status: indicate to VF whether its request success(0) or failed. 14 */ 15 static int hclge_gen_resp_to_vf(struct hclge_vport *vport, 16 struct hclge_mbx_vf_to_pf_cmd *vf_to_pf_req, 17 int resp_status, 18 u8 *resp_data, u16 resp_data_len) 19 { 20 struct hclge_mbx_pf_to_vf_cmd *resp_pf_to_vf; 21 struct hclge_dev *hdev = vport->back; 22 enum hclge_cmd_status status; 23 struct hclge_desc desc; 24 25 resp_pf_to_vf = (struct hclge_mbx_pf_to_vf_cmd *)desc.data; 26 27 if (resp_data_len > HCLGE_MBX_MAX_RESP_DATA_SIZE) { 28 dev_err(&hdev->pdev->dev, 29 "PF fail to gen resp to VF len %d exceeds max len %d\n", 30 resp_data_len, 31 HCLGE_MBX_MAX_RESP_DATA_SIZE); 32 } 33 34 hclge_cmd_setup_basic_desc(&desc, HCLGEVF_OPC_MBX_PF_TO_VF, false); 35 36 resp_pf_to_vf->dest_vfid = vf_to_pf_req->mbx_src_vfid; 37 resp_pf_to_vf->msg_len = vf_to_pf_req->msg_len; 38 39 resp_pf_to_vf->msg[0] = HCLGE_MBX_PF_VF_RESP; 40 resp_pf_to_vf->msg[1] = vf_to_pf_req->msg[0]; 41 resp_pf_to_vf->msg[2] = vf_to_pf_req->msg[1]; 42 resp_pf_to_vf->msg[3] = (resp_status == 0) ? 0 : 1; 43 44 if (resp_data && resp_data_len > 0) 45 memcpy(&resp_pf_to_vf->msg[4], resp_data, resp_data_len); 46 47 status = hclge_cmd_send(&hdev->hw, &desc, 1); 48 if (status) 49 dev_err(&hdev->pdev->dev, 50 "PF failed(=%d) to send response to VF\n", status); 51 52 return status; 53 } 54 55 static int hclge_send_mbx_msg(struct hclge_vport *vport, u8 *msg, u16 msg_len, 56 u16 mbx_opcode, u8 dest_vfid) 57 { 58 struct hclge_mbx_pf_to_vf_cmd *resp_pf_to_vf; 59 struct hclge_dev *hdev = vport->back; 60 enum hclge_cmd_status status; 61 struct hclge_desc desc; 62 63 resp_pf_to_vf = (struct hclge_mbx_pf_to_vf_cmd *)desc.data; 64 65 hclge_cmd_setup_basic_desc(&desc, HCLGEVF_OPC_MBX_PF_TO_VF, false); 66 67 resp_pf_to_vf->dest_vfid = dest_vfid; 68 resp_pf_to_vf->msg_len = msg_len; 69 resp_pf_to_vf->msg[0] = mbx_opcode; 70 71 memcpy(&resp_pf_to_vf->msg[1], msg, msg_len); 72 73 status = hclge_cmd_send(&hdev->hw, &desc, 1); 74 if (status) 75 dev_err(&hdev->pdev->dev, 76 "PF failed(=%d) to send mailbox message to VF\n", 77 status); 78 79 return status; 80 } 81 82 int hclge_inform_reset_assert_to_vf(struct hclge_vport *vport) 83 { 84 struct hclge_dev *hdev = vport->back; 85 enum hnae3_reset_type reset_type; 86 u8 msg_data[2]; 87 u8 dest_vfid; 88 89 dest_vfid = (u8)vport->vport_id; 90 91 if (hdev->reset_type == HNAE3_FUNC_RESET) 92 reset_type = HNAE3_VF_PF_FUNC_RESET; 93 else if (hdev->reset_type == HNAE3_FLR_RESET) 94 reset_type = HNAE3_VF_FULL_RESET; 95 else 96 return -EINVAL; 97 98 memcpy(&msg_data[0], &reset_type, sizeof(u16)); 99 100 /* send this requested info to VF */ 101 return hclge_send_mbx_msg(vport, msg_data, sizeof(msg_data), 102 HCLGE_MBX_ASSERTING_RESET, dest_vfid); 103 } 104 105 static void hclge_free_vector_ring_chain(struct hnae3_ring_chain_node *head) 106 { 107 struct hnae3_ring_chain_node *chain_tmp, *chain; 108 109 chain = head->next; 110 111 while (chain) { 112 chain_tmp = chain->next; 113 kzfree(chain); 114 chain = chain_tmp; 115 } 116 } 117 118 /* hclge_get_ring_chain_from_mbx: get ring type & tqp id & int_gl idx 119 * from mailbox message 120 * msg[0]: opcode 121 * msg[1]: <not relevant to this function> 122 * msg[2]: ring_num 123 * msg[3]: first ring type (TX|RX) 124 * msg[4]: first tqp id 125 * msg[5]: first int_gl idx 126 * msg[6] ~ msg[14]: other ring type, tqp id and int_gl idx 127 */ 128 static int hclge_get_ring_chain_from_mbx( 129 struct hclge_mbx_vf_to_pf_cmd *req, 130 struct hnae3_ring_chain_node *ring_chain, 131 struct hclge_vport *vport) 132 { 133 struct hnae3_ring_chain_node *cur_chain, *new_chain; 134 int ring_num; 135 int i; 136 137 ring_num = req->msg[2]; 138 139 if (ring_num > ((HCLGE_MBX_VF_MSG_DATA_NUM - 140 HCLGE_MBX_RING_MAP_BASIC_MSG_NUM) / 141 HCLGE_MBX_RING_NODE_VARIABLE_NUM)) 142 return -ENOMEM; 143 144 hnae3_set_bit(ring_chain->flag, HNAE3_RING_TYPE_B, req->msg[3]); 145 ring_chain->tqp_index = 146 hclge_get_queue_id(vport->nic.kinfo.tqp[req->msg[4]]); 147 hnae3_set_field(ring_chain->int_gl_idx, HNAE3_RING_GL_IDX_M, 148 HNAE3_RING_GL_IDX_S, 149 req->msg[5]); 150 151 cur_chain = ring_chain; 152 153 for (i = 1; i < ring_num; i++) { 154 new_chain = kzalloc(sizeof(*new_chain), GFP_KERNEL); 155 if (!new_chain) 156 goto err; 157 158 hnae3_set_bit(new_chain->flag, HNAE3_RING_TYPE_B, 159 req->msg[HCLGE_MBX_RING_NODE_VARIABLE_NUM * i + 160 HCLGE_MBX_RING_MAP_BASIC_MSG_NUM]); 161 162 new_chain->tqp_index = 163 hclge_get_queue_id(vport->nic.kinfo.tqp 164 [req->msg[HCLGE_MBX_RING_NODE_VARIABLE_NUM * i + 165 HCLGE_MBX_RING_MAP_BASIC_MSG_NUM + 1]]); 166 167 hnae3_set_field(new_chain->int_gl_idx, HNAE3_RING_GL_IDX_M, 168 HNAE3_RING_GL_IDX_S, 169 req->msg[HCLGE_MBX_RING_NODE_VARIABLE_NUM * i + 170 HCLGE_MBX_RING_MAP_BASIC_MSG_NUM + 2]); 171 172 cur_chain->next = new_chain; 173 cur_chain = new_chain; 174 } 175 176 return 0; 177 err: 178 hclge_free_vector_ring_chain(ring_chain); 179 return -ENOMEM; 180 } 181 182 static int hclge_map_unmap_ring_to_vf_vector(struct hclge_vport *vport, bool en, 183 struct hclge_mbx_vf_to_pf_cmd *req) 184 { 185 struct hnae3_ring_chain_node ring_chain; 186 int vector_id = req->msg[1]; 187 int ret; 188 189 memset(&ring_chain, 0, sizeof(ring_chain)); 190 ret = hclge_get_ring_chain_from_mbx(req, &ring_chain, vport); 191 if (ret) 192 return ret; 193 194 ret = hclge_bind_ring_with_vector(vport, vector_id, en, &ring_chain); 195 if (ret) 196 return ret; 197 198 hclge_free_vector_ring_chain(&ring_chain); 199 200 return 0; 201 } 202 203 static int hclge_set_vf_promisc_mode(struct hclge_vport *vport, 204 struct hclge_mbx_vf_to_pf_cmd *req) 205 { 206 bool en_bc = req->msg[1] ? true : false; 207 struct hclge_promisc_param param; 208 209 /* vf is not allowed to enable unicast/multicast broadcast */ 210 hclge_promisc_param_init(¶m, false, false, en_bc, vport->vport_id); 211 return hclge_cmd_set_promisc_mode(vport->back, ¶m); 212 } 213 214 static int hclge_set_vf_uc_mac_addr(struct hclge_vport *vport, 215 struct hclge_mbx_vf_to_pf_cmd *mbx_req, 216 bool gen_resp) 217 { 218 const u8 *mac_addr = (const u8 *)(&mbx_req->msg[2]); 219 struct hclge_dev *hdev = vport->back; 220 int status; 221 222 if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_UC_MODIFY) { 223 const u8 *old_addr = (const u8 *)(&mbx_req->msg[8]); 224 225 hclge_rm_uc_addr_common(vport, old_addr); 226 status = hclge_add_uc_addr_common(vport, mac_addr); 227 if (status) 228 hclge_add_uc_addr_common(vport, old_addr); 229 } else if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_UC_ADD) { 230 status = hclge_add_uc_addr_common(vport, mac_addr); 231 } else if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_UC_REMOVE) { 232 status = hclge_rm_uc_addr_common(vport, mac_addr); 233 } else { 234 dev_err(&hdev->pdev->dev, 235 "failed to set unicast mac addr, unknown subcode %d\n", 236 mbx_req->msg[1]); 237 return -EIO; 238 } 239 240 if (gen_resp) 241 hclge_gen_resp_to_vf(vport, mbx_req, status, NULL, 0); 242 243 return 0; 244 } 245 246 static int hclge_set_vf_mc_mac_addr(struct hclge_vport *vport, 247 struct hclge_mbx_vf_to_pf_cmd *mbx_req, 248 bool gen_resp) 249 { 250 const u8 *mac_addr = (const u8 *)(&mbx_req->msg[2]); 251 struct hclge_dev *hdev = vport->back; 252 u8 resp_len = 0; 253 u8 resp_data; 254 int status; 255 256 if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_MC_ADD) { 257 status = hclge_add_mc_addr_common(vport, mac_addr); 258 } else if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_MC_REMOVE) { 259 status = hclge_rm_mc_addr_common(vport, mac_addr); 260 } else { 261 dev_err(&hdev->pdev->dev, 262 "failed to set mcast mac addr, unknown subcode %d\n", 263 mbx_req->msg[1]); 264 return -EIO; 265 } 266 267 if (gen_resp) 268 hclge_gen_resp_to_vf(vport, mbx_req, status, 269 &resp_data, resp_len); 270 271 return 0; 272 } 273 274 static int hclge_set_vf_vlan_cfg(struct hclge_vport *vport, 275 struct hclge_mbx_vf_to_pf_cmd *mbx_req, 276 bool gen_resp) 277 { 278 int status = 0; 279 280 if (mbx_req->msg[1] == HCLGE_MBX_VLAN_FILTER) { 281 struct hnae3_handle *handle = &vport->nic; 282 u16 vlan, proto; 283 bool is_kill; 284 285 is_kill = !!mbx_req->msg[2]; 286 memcpy(&vlan, &mbx_req->msg[3], sizeof(vlan)); 287 memcpy(&proto, &mbx_req->msg[5], sizeof(proto)); 288 status = hclge_set_vlan_filter(handle, cpu_to_be16(proto), 289 vlan, is_kill); 290 } else if (mbx_req->msg[1] == HCLGE_MBX_VLAN_RX_OFF_CFG) { 291 struct hnae3_handle *handle = &vport->nic; 292 bool en = mbx_req->msg[2] ? true : false; 293 294 status = hclge_en_hw_strip_rxvtag(handle, en); 295 } 296 297 if (gen_resp) 298 status = hclge_gen_resp_to_vf(vport, mbx_req, status, NULL, 0); 299 300 return status; 301 } 302 303 static int hclge_set_vf_alive(struct hclge_vport *vport, 304 struct hclge_mbx_vf_to_pf_cmd *mbx_req, 305 bool gen_resp) 306 { 307 bool alive = !!mbx_req->msg[2]; 308 int ret = 0; 309 310 if (alive) 311 ret = hclge_vport_start(vport); 312 else 313 hclge_vport_stop(vport); 314 315 return ret; 316 } 317 318 static int hclge_get_vf_tcinfo(struct hclge_vport *vport, 319 struct hclge_mbx_vf_to_pf_cmd *mbx_req, 320 bool gen_resp) 321 { 322 struct hnae3_knic_private_info *kinfo = &vport->nic.kinfo; 323 u8 vf_tc_map = 0; 324 int i, ret; 325 326 for (i = 0; i < kinfo->num_tc; i++) 327 vf_tc_map |= BIT(i); 328 329 ret = hclge_gen_resp_to_vf(vport, mbx_req, 0, &vf_tc_map, 330 sizeof(u8)); 331 332 return ret; 333 } 334 335 static int hclge_get_vf_queue_info(struct hclge_vport *vport, 336 struct hclge_mbx_vf_to_pf_cmd *mbx_req, 337 bool gen_resp) 338 { 339 #define HCLGE_TQPS_RSS_INFO_LEN 8 340 u8 resp_data[HCLGE_TQPS_RSS_INFO_LEN]; 341 struct hclge_dev *hdev = vport->back; 342 343 /* get the queue related info */ 344 memcpy(&resp_data[0], &vport->alloc_tqps, sizeof(u16)); 345 memcpy(&resp_data[2], &vport->nic.kinfo.rss_size, sizeof(u16)); 346 memcpy(&resp_data[4], &hdev->num_desc, sizeof(u16)); 347 memcpy(&resp_data[6], &hdev->rx_buf_len, sizeof(u16)); 348 349 return hclge_gen_resp_to_vf(vport, mbx_req, 0, resp_data, 350 HCLGE_TQPS_RSS_INFO_LEN); 351 } 352 353 static int hclge_get_link_info(struct hclge_vport *vport, 354 struct hclge_mbx_vf_to_pf_cmd *mbx_req) 355 { 356 struct hclge_dev *hdev = vport->back; 357 u16 link_status; 358 u8 msg_data[10]; 359 u16 media_type; 360 u8 dest_vfid; 361 u16 duplex; 362 363 /* mac.link can only be 0 or 1 */ 364 link_status = (u16)hdev->hw.mac.link; 365 duplex = hdev->hw.mac.duplex; 366 media_type = hdev->hw.mac.media_type; 367 memcpy(&msg_data[0], &link_status, sizeof(u16)); 368 memcpy(&msg_data[2], &hdev->hw.mac.speed, sizeof(u32)); 369 memcpy(&msg_data[6], &duplex, sizeof(u16)); 370 memcpy(&msg_data[8], &media_type, sizeof(u16)); 371 dest_vfid = mbx_req->mbx_src_vfid; 372 373 /* send this requested info to VF */ 374 return hclge_send_mbx_msg(vport, msg_data, sizeof(msg_data), 375 HCLGE_MBX_LINK_STAT_CHANGE, dest_vfid); 376 } 377 378 static void hclge_get_link_mode(struct hclge_vport *vport, 379 struct hclge_mbx_vf_to_pf_cmd *mbx_req) 380 { 381 #define HCLGE_SUPPORTED 1 382 struct hclge_dev *hdev = vport->back; 383 unsigned long advertising; 384 unsigned long supported; 385 unsigned long send_data; 386 u8 msg_data[10]; 387 u8 dest_vfid; 388 389 advertising = hdev->hw.mac.advertising[0]; 390 supported = hdev->hw.mac.supported[0]; 391 dest_vfid = mbx_req->mbx_src_vfid; 392 msg_data[0] = mbx_req->msg[2]; 393 394 send_data = msg_data[0] == HCLGE_SUPPORTED ? supported : advertising; 395 396 memcpy(&msg_data[2], &send_data, sizeof(unsigned long)); 397 hclge_send_mbx_msg(vport, msg_data, sizeof(msg_data), 398 HCLGE_MBX_LINK_STAT_MODE, dest_vfid); 399 } 400 401 static void hclge_mbx_reset_vf_queue(struct hclge_vport *vport, 402 struct hclge_mbx_vf_to_pf_cmd *mbx_req) 403 { 404 u16 queue_id; 405 406 memcpy(&queue_id, &mbx_req->msg[2], sizeof(queue_id)); 407 408 hclge_reset_vf_queue(vport, queue_id); 409 410 /* send response msg to VF after queue reset complete*/ 411 hclge_gen_resp_to_vf(vport, mbx_req, 0, NULL, 0); 412 } 413 414 static void hclge_reset_vf(struct hclge_vport *vport, 415 struct hclge_mbx_vf_to_pf_cmd *mbx_req) 416 { 417 struct hclge_dev *hdev = vport->back; 418 int ret; 419 420 dev_warn(&hdev->pdev->dev, "PF received VF reset request from VF %d!", 421 vport->vport_id); 422 423 ret = hclge_func_reset_cmd(hdev, vport->vport_id); 424 hclge_gen_resp_to_vf(vport, mbx_req, ret, NULL, 0); 425 } 426 427 static void hclge_vf_keep_alive(struct hclge_vport *vport, 428 struct hclge_mbx_vf_to_pf_cmd *mbx_req) 429 { 430 vport->last_active_jiffies = jiffies; 431 } 432 433 static int hclge_set_vf_mtu(struct hclge_vport *vport, 434 struct hclge_mbx_vf_to_pf_cmd *mbx_req) 435 { 436 int ret; 437 u32 mtu; 438 439 memcpy(&mtu, &mbx_req->msg[2], sizeof(mtu)); 440 ret = hclge_set_vport_mtu(vport, mtu); 441 442 return hclge_gen_resp_to_vf(vport, mbx_req, ret, NULL, 0); 443 } 444 445 static int hclge_get_queue_id_in_pf(struct hclge_vport *vport, 446 struct hclge_mbx_vf_to_pf_cmd *mbx_req) 447 { 448 u16 queue_id, qid_in_pf; 449 u8 resp_data[2]; 450 451 memcpy(&queue_id, &mbx_req->msg[2], sizeof(queue_id)); 452 qid_in_pf = hclge_covert_handle_qid_global(&vport->nic, queue_id); 453 memcpy(resp_data, &qid_in_pf, sizeof(qid_in_pf)); 454 455 return hclge_gen_resp_to_vf(vport, mbx_req, 0, resp_data, 2); 456 } 457 458 static bool hclge_cmd_crq_empty(struct hclge_hw *hw) 459 { 460 u32 tail = hclge_read_dev(hw, HCLGE_NIC_CRQ_TAIL_REG); 461 462 return tail == hw->cmq.crq.next_to_use; 463 } 464 465 void hclge_mbx_handler(struct hclge_dev *hdev) 466 { 467 struct hclge_cmq_ring *crq = &hdev->hw.cmq.crq; 468 struct hclge_mbx_vf_to_pf_cmd *req; 469 struct hclge_vport *vport; 470 struct hclge_desc *desc; 471 int ret, flag; 472 473 /* handle all the mailbox requests in the queue */ 474 while (!hclge_cmd_crq_empty(&hdev->hw)) { 475 if (test_bit(HCLGE_STATE_CMD_DISABLE, &hdev->state)) { 476 dev_warn(&hdev->pdev->dev, 477 "command queue needs re-initializing\n"); 478 return; 479 } 480 481 desc = &crq->desc[crq->next_to_use]; 482 req = (struct hclge_mbx_vf_to_pf_cmd *)desc->data; 483 484 flag = le16_to_cpu(crq->desc[crq->next_to_use].flag); 485 if (unlikely(!hnae3_get_bit(flag, HCLGE_CMDQ_RX_OUTVLD_B))) { 486 dev_warn(&hdev->pdev->dev, 487 "dropped invalid mailbox message, code = %d\n", 488 req->msg[0]); 489 490 /* dropping/not processing this invalid message */ 491 crq->desc[crq->next_to_use].flag = 0; 492 hclge_mbx_ring_ptr_move_crq(crq); 493 continue; 494 } 495 496 vport = &hdev->vport[req->mbx_src_vfid]; 497 498 switch (req->msg[0]) { 499 case HCLGE_MBX_MAP_RING_TO_VECTOR: 500 ret = hclge_map_unmap_ring_to_vf_vector(vport, true, 501 req); 502 break; 503 case HCLGE_MBX_UNMAP_RING_TO_VECTOR: 504 ret = hclge_map_unmap_ring_to_vf_vector(vport, false, 505 req); 506 break; 507 case HCLGE_MBX_SET_PROMISC_MODE: 508 ret = hclge_set_vf_promisc_mode(vport, req); 509 if (ret) 510 dev_err(&hdev->pdev->dev, 511 "PF fail(%d) to set VF promisc mode\n", 512 ret); 513 break; 514 case HCLGE_MBX_SET_UNICAST: 515 ret = hclge_set_vf_uc_mac_addr(vport, req, true); 516 if (ret) 517 dev_err(&hdev->pdev->dev, 518 "PF fail(%d) to set VF UC MAC Addr\n", 519 ret); 520 break; 521 case HCLGE_MBX_SET_MULTICAST: 522 ret = hclge_set_vf_mc_mac_addr(vport, req, false); 523 if (ret) 524 dev_err(&hdev->pdev->dev, 525 "PF fail(%d) to set VF MC MAC Addr\n", 526 ret); 527 break; 528 case HCLGE_MBX_SET_VLAN: 529 ret = hclge_set_vf_vlan_cfg(vport, req, false); 530 if (ret) 531 dev_err(&hdev->pdev->dev, 532 "PF failed(%d) to config VF's VLAN\n", 533 ret); 534 break; 535 case HCLGE_MBX_SET_ALIVE: 536 ret = hclge_set_vf_alive(vport, req, false); 537 if (ret) 538 dev_err(&hdev->pdev->dev, 539 "PF failed(%d) to set VF's ALIVE\n", 540 ret); 541 break; 542 case HCLGE_MBX_GET_QINFO: 543 ret = hclge_get_vf_queue_info(vport, req, true); 544 if (ret) 545 dev_err(&hdev->pdev->dev, 546 "PF failed(%d) to get Q info for VF\n", 547 ret); 548 break; 549 case HCLGE_MBX_GET_TCINFO: 550 ret = hclge_get_vf_tcinfo(vport, req, true); 551 if (ret) 552 dev_err(&hdev->pdev->dev, 553 "PF failed(%d) to get TC info for VF\n", 554 ret); 555 break; 556 case HCLGE_MBX_GET_LINK_STATUS: 557 ret = hclge_get_link_info(vport, req); 558 if (ret) 559 dev_err(&hdev->pdev->dev, 560 "PF fail(%d) to get link stat for VF\n", 561 ret); 562 break; 563 case HCLGE_MBX_QUEUE_RESET: 564 hclge_mbx_reset_vf_queue(vport, req); 565 break; 566 case HCLGE_MBX_RESET: 567 hclge_reset_vf(vport, req); 568 break; 569 case HCLGE_MBX_KEEP_ALIVE: 570 hclge_vf_keep_alive(vport, req); 571 break; 572 case HCLGE_MBX_SET_MTU: 573 ret = hclge_set_vf_mtu(vport, req); 574 if (ret) 575 dev_err(&hdev->pdev->dev, 576 "VF fail(%d) to set mtu\n", ret); 577 break; 578 case HCLGE_MBX_GET_QID_IN_PF: 579 ret = hclge_get_queue_id_in_pf(vport, req); 580 if (ret) 581 dev_err(&hdev->pdev->dev, 582 "PF failed(%d) to get qid for VF\n", 583 ret); 584 break; 585 case HCLGE_MBX_GET_LINK_MODE: 586 hclge_get_link_mode(vport, req); 587 break; 588 default: 589 dev_err(&hdev->pdev->dev, 590 "un-supported mailbox message, code = %d\n", 591 req->msg[0]); 592 break; 593 } 594 crq->desc[crq->next_to_use].flag = 0; 595 hclge_mbx_ring_ptr_move_crq(crq); 596 } 597 598 /* Write back CMDQ_RQ header pointer, M7 need this pointer */ 599 hclge_write_dev(&hdev->hw, HCLGE_NIC_CRQ_HEAD_REG, crq->next_to_use); 600 } 601