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 static void hclge_free_vector_ring_chain(struct hnae3_ring_chain_node *head) 83 { 84 struct hnae3_ring_chain_node *chain_tmp, *chain; 85 86 chain = head->next; 87 88 while (chain) { 89 chain_tmp = chain->next; 90 kzfree(chain); 91 chain = chain_tmp; 92 } 93 } 94 95 /* hclge_get_ring_chain_from_mbx: get ring type & tqpid from mailbox message 96 * msg[0]: opcode 97 * msg[1]: <not relevant to this function> 98 * msg[2]: ring_num 99 * msg[3]: first ring type (TX|RX) 100 * msg[4]: first tqp id 101 * msg[5] ~ msg[14]: other ring type and tqp id 102 */ 103 static int hclge_get_ring_chain_from_mbx( 104 struct hclge_mbx_vf_to_pf_cmd *req, 105 struct hnae3_ring_chain_node *ring_chain, 106 struct hclge_vport *vport) 107 { 108 #define HCLGE_RING_NODE_VARIABLE_NUM 3 109 #define HCLGE_RING_MAP_MBX_BASIC_MSG_NUM 3 110 struct hnae3_ring_chain_node *cur_chain, *new_chain; 111 int ring_num; 112 int i; 113 114 ring_num = req->msg[2]; 115 116 hnae_set_bit(ring_chain->flag, HNAE3_RING_TYPE_B, req->msg[3]); 117 ring_chain->tqp_index = 118 hclge_get_queue_id(vport->nic.kinfo.tqp[req->msg[4]]); 119 120 cur_chain = ring_chain; 121 122 for (i = 1; i < ring_num; i++) { 123 new_chain = kzalloc(sizeof(*new_chain), GFP_KERNEL); 124 if (!new_chain) 125 goto err; 126 127 hnae_set_bit(new_chain->flag, HNAE3_RING_TYPE_B, 128 req->msg[HCLGE_RING_NODE_VARIABLE_NUM * i + 129 HCLGE_RING_MAP_MBX_BASIC_MSG_NUM]); 130 131 new_chain->tqp_index = 132 hclge_get_queue_id(vport->nic.kinfo.tqp 133 [req->msg[HCLGE_RING_NODE_VARIABLE_NUM * i + 134 HCLGE_RING_MAP_MBX_BASIC_MSG_NUM + 1]]); 135 136 cur_chain->next = new_chain; 137 cur_chain = new_chain; 138 } 139 140 return 0; 141 err: 142 hclge_free_vector_ring_chain(ring_chain); 143 return -ENOMEM; 144 } 145 146 static int hclge_map_unmap_ring_to_vf_vector(struct hclge_vport *vport, bool en, 147 struct hclge_mbx_vf_to_pf_cmd *req) 148 { 149 struct hnae3_ring_chain_node ring_chain; 150 int vector_id = req->msg[1]; 151 int ret; 152 153 memset(&ring_chain, 0, sizeof(ring_chain)); 154 ret = hclge_get_ring_chain_from_mbx(req, &ring_chain, vport); 155 if (ret) 156 return ret; 157 158 ret = hclge_bind_ring_with_vector(vport, vector_id, en, &ring_chain); 159 if (ret) 160 return ret; 161 162 hclge_free_vector_ring_chain(&ring_chain); 163 164 return 0; 165 } 166 167 static int hclge_set_vf_promisc_mode(struct hclge_vport *vport, 168 struct hclge_mbx_vf_to_pf_cmd *req) 169 { 170 bool en = req->msg[1] ? true : false; 171 struct hclge_promisc_param param; 172 173 /* always enable broadcast promisc bit */ 174 hclge_promisc_param_init(¶m, en, en, true, vport->vport_id); 175 return hclge_cmd_set_promisc_mode(vport->back, ¶m); 176 } 177 178 static int hclge_set_vf_uc_mac_addr(struct hclge_vport *vport, 179 struct hclge_mbx_vf_to_pf_cmd *mbx_req, 180 bool gen_resp) 181 { 182 const u8 *mac_addr = (const u8 *)(&mbx_req->msg[2]); 183 struct hclge_dev *hdev = vport->back; 184 int status; 185 186 if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_UC_MODIFY) { 187 const u8 *old_addr = (const u8 *)(&mbx_req->msg[8]); 188 189 hclge_rm_uc_addr_common(vport, old_addr); 190 status = hclge_add_uc_addr_common(vport, mac_addr); 191 } else if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_UC_ADD) { 192 status = hclge_add_uc_addr_common(vport, mac_addr); 193 } else if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_UC_REMOVE) { 194 status = hclge_rm_uc_addr_common(vport, mac_addr); 195 } else { 196 dev_err(&hdev->pdev->dev, 197 "failed to set unicast mac addr, unknown subcode %d\n", 198 mbx_req->msg[1]); 199 return -EIO; 200 } 201 202 if (gen_resp) 203 hclge_gen_resp_to_vf(vport, mbx_req, status, NULL, 0); 204 205 return 0; 206 } 207 208 static int hclge_set_vf_mc_mac_addr(struct hclge_vport *vport, 209 struct hclge_mbx_vf_to_pf_cmd *mbx_req, 210 bool gen_resp) 211 { 212 const u8 *mac_addr = (const u8 *)(&mbx_req->msg[2]); 213 struct hclge_dev *hdev = vport->back; 214 int status; 215 216 if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_MC_ADD) { 217 status = hclge_add_mc_addr_common(vport, mac_addr); 218 } else if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_MC_REMOVE) { 219 status = hclge_rm_mc_addr_common(vport, mac_addr); 220 } else if (mbx_req->msg[1] == HCLGE_MBX_MAC_VLAN_MC_FUNC_MTA_ENABLE) { 221 u8 func_id = vport->vport_id; 222 bool enable = mbx_req->msg[2]; 223 224 status = hclge_cfg_func_mta_filter(hdev, func_id, enable); 225 } else { 226 dev_err(&hdev->pdev->dev, 227 "failed to set mcast mac addr, unknown subcode %d\n", 228 mbx_req->msg[1]); 229 return -EIO; 230 } 231 232 if (gen_resp) 233 hclge_gen_resp_to_vf(vport, mbx_req, status, NULL, 0); 234 235 return 0; 236 } 237 238 static int hclge_set_vf_vlan_cfg(struct hclge_vport *vport, 239 struct hclge_mbx_vf_to_pf_cmd *mbx_req, 240 bool gen_resp) 241 { 242 struct hclge_dev *hdev = vport->back; 243 int status = 0; 244 245 if (mbx_req->msg[1] == HCLGE_MBX_VLAN_FILTER) { 246 u16 vlan, proto; 247 bool is_kill; 248 249 is_kill = !!mbx_req->msg[2]; 250 memcpy(&vlan, &mbx_req->msg[3], sizeof(vlan)); 251 memcpy(&proto, &mbx_req->msg[5], sizeof(proto)); 252 status = hclge_set_vf_vlan_common(hdev, vport->vport_id, 253 is_kill, vlan, 0, 254 cpu_to_be16(proto)); 255 } 256 257 if (gen_resp) 258 status = hclge_gen_resp_to_vf(vport, mbx_req, status, NULL, 0); 259 260 return status; 261 } 262 263 static int hclge_get_vf_tcinfo(struct hclge_vport *vport, 264 struct hclge_mbx_vf_to_pf_cmd *mbx_req, 265 bool gen_resp) 266 { 267 struct hclge_dev *hdev = vport->back; 268 int ret; 269 270 ret = hclge_gen_resp_to_vf(vport, mbx_req, 0, &hdev->hw_tc_map, 271 sizeof(u8)); 272 273 return ret; 274 } 275 276 static int hclge_get_vf_queue_info(struct hclge_vport *vport, 277 struct hclge_mbx_vf_to_pf_cmd *mbx_req, 278 bool gen_resp) 279 { 280 #define HCLGE_TQPS_RSS_INFO_LEN 8 281 u8 resp_data[HCLGE_TQPS_RSS_INFO_LEN]; 282 struct hclge_dev *hdev = vport->back; 283 284 /* get the queue related info */ 285 memcpy(&resp_data[0], &vport->alloc_tqps, sizeof(u16)); 286 memcpy(&resp_data[2], &hdev->rss_size_max, sizeof(u16)); 287 memcpy(&resp_data[4], &hdev->num_desc, sizeof(u16)); 288 memcpy(&resp_data[6], &hdev->rx_buf_len, sizeof(u16)); 289 290 return hclge_gen_resp_to_vf(vport, mbx_req, 0, resp_data, 291 HCLGE_TQPS_RSS_INFO_LEN); 292 } 293 294 static int hclge_get_link_info(struct hclge_vport *vport, 295 struct hclge_mbx_vf_to_pf_cmd *mbx_req) 296 { 297 struct hclge_dev *hdev = vport->back; 298 u16 link_status; 299 u8 msg_data[2]; 300 u8 dest_vfid; 301 302 /* mac.link can only be 0 or 1 */ 303 link_status = (u16)hdev->hw.mac.link; 304 memcpy(&msg_data[0], &link_status, sizeof(u16)); 305 dest_vfid = mbx_req->mbx_src_vfid; 306 307 /* send this requested info to VF */ 308 return hclge_send_mbx_msg(vport, msg_data, sizeof(u8), 309 HCLGE_MBX_LINK_STAT_CHANGE, dest_vfid); 310 } 311 312 static void hclge_reset_vf_queue(struct hclge_vport *vport, 313 struct hclge_mbx_vf_to_pf_cmd *mbx_req) 314 { 315 u16 queue_id; 316 317 memcpy(&queue_id, &mbx_req->msg[2], sizeof(queue_id)); 318 319 hclge_reset_tqp(&vport->nic, queue_id); 320 } 321 322 void hclge_mbx_handler(struct hclge_dev *hdev) 323 { 324 struct hclge_cmq_ring *crq = &hdev->hw.cmq.crq; 325 struct hclge_mbx_vf_to_pf_cmd *req; 326 struct hclge_vport *vport; 327 struct hclge_desc *desc; 328 int ret; 329 330 /* handle all the mailbox requests in the queue */ 331 while (hnae_get_bit(crq->desc[crq->next_to_use].flag, 332 HCLGE_CMDQ_RX_OUTVLD_B)) { 333 desc = &crq->desc[crq->next_to_use]; 334 req = (struct hclge_mbx_vf_to_pf_cmd *)desc->data; 335 336 vport = &hdev->vport[req->mbx_src_vfid]; 337 338 switch (req->msg[0]) { 339 case HCLGE_MBX_MAP_RING_TO_VECTOR: 340 ret = hclge_map_unmap_ring_to_vf_vector(vport, true, 341 req); 342 break; 343 case HCLGE_MBX_UNMAP_RING_TO_VECTOR: 344 ret = hclge_map_unmap_ring_to_vf_vector(vport, false, 345 req); 346 break; 347 case HCLGE_MBX_SET_PROMISC_MODE: 348 ret = hclge_set_vf_promisc_mode(vport, req); 349 if (ret) 350 dev_err(&hdev->pdev->dev, 351 "PF fail(%d) to set VF promisc mode\n", 352 ret); 353 break; 354 case HCLGE_MBX_SET_UNICAST: 355 ret = hclge_set_vf_uc_mac_addr(vport, req, false); 356 if (ret) 357 dev_err(&hdev->pdev->dev, 358 "PF fail(%d) to set VF UC MAC Addr\n", 359 ret); 360 break; 361 case HCLGE_MBX_SET_MULTICAST: 362 ret = hclge_set_vf_mc_mac_addr(vport, req, false); 363 if (ret) 364 dev_err(&hdev->pdev->dev, 365 "PF fail(%d) to set VF MC MAC Addr\n", 366 ret); 367 break; 368 case HCLGE_MBX_SET_VLAN: 369 ret = hclge_set_vf_vlan_cfg(vport, req, false); 370 if (ret) 371 dev_err(&hdev->pdev->dev, 372 "PF failed(%d) to config VF's VLAN\n", 373 ret); 374 break; 375 case HCLGE_MBX_GET_QINFO: 376 ret = hclge_get_vf_queue_info(vport, req, true); 377 if (ret) 378 dev_err(&hdev->pdev->dev, 379 "PF failed(%d) to get Q info for VF\n", 380 ret); 381 break; 382 case HCLGE_MBX_GET_TCINFO: 383 ret = hclge_get_vf_tcinfo(vport, req, true); 384 if (ret) 385 dev_err(&hdev->pdev->dev, 386 "PF failed(%d) to get TC info for VF\n", 387 ret); 388 break; 389 case HCLGE_MBX_GET_LINK_STATUS: 390 ret = hclge_get_link_info(vport, req); 391 if (ret) 392 dev_err(&hdev->pdev->dev, 393 "PF fail(%d) to get link stat for VF\n", 394 ret); 395 break; 396 case HCLGE_MBX_QUEUE_RESET: 397 hclge_reset_vf_queue(vport, req); 398 break; 399 default: 400 dev_err(&hdev->pdev->dev, 401 "un-supported mailbox message, code = %d\n", 402 req->msg[0]); 403 break; 404 } 405 hclge_mbx_ring_ptr_move_crq(crq); 406 } 407 408 /* Write back CMDQ_RQ header pointer, M7 need this pointer */ 409 hclge_write_dev(&hdev->hw, HCLGE_NIC_CRQ_HEAD_REG, crq->next_to_use); 410 } 411