1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright 2008 Cisco Systems, Inc. All rights reserved. 4 * Copyright 2007 Nuova Systems, Inc. All rights reserved. 5 */ 6 #include <linux/errno.h> 7 #include <linux/types.h> 8 #include <linux/pci.h> 9 #include "wq_enet_desc.h" 10 #include "rq_enet_desc.h" 11 #include "cq_enet_desc.h" 12 #include "vnic_resource.h" 13 #include "vnic_dev.h" 14 #include "vnic_wq.h" 15 #include "vnic_rq.h" 16 #include "vnic_cq.h" 17 #include "vnic_intr.h" 18 #include "vnic_stats.h" 19 #include "vnic_nic.h" 20 #include "fnic.h" 21 22 int fnic_get_vnic_config(struct fnic *fnic) 23 { 24 struct vnic_fc_config *c = &fnic->config; 25 int err; 26 27 #define GET_CONFIG(m) \ 28 do { \ 29 err = vnic_dev_spec(fnic->vdev, \ 30 offsetof(struct vnic_fc_config, m), \ 31 sizeof(c->m), &c->m); \ 32 if (err) { \ 33 dev_err(&fnic->pdev->dev, "Error getting %s, %d\n", #m, err); \ 34 return err; \ 35 } \ 36 } while (0); 37 38 GET_CONFIG(node_wwn); 39 GET_CONFIG(port_wwn); 40 GET_CONFIG(wq_enet_desc_count); 41 GET_CONFIG(wq_copy_desc_count); 42 GET_CONFIG(rq_desc_count); 43 GET_CONFIG(maxdatafieldsize); 44 GET_CONFIG(ed_tov); 45 GET_CONFIG(ra_tov); 46 GET_CONFIG(intr_timer); 47 GET_CONFIG(intr_timer_type); 48 GET_CONFIG(flags); 49 GET_CONFIG(flogi_retries); 50 GET_CONFIG(flogi_timeout); 51 GET_CONFIG(plogi_retries); 52 GET_CONFIG(plogi_timeout); 53 GET_CONFIG(io_throttle_count); 54 GET_CONFIG(link_down_timeout); 55 GET_CONFIG(port_down_timeout); 56 GET_CONFIG(port_down_io_retries); 57 GET_CONFIG(luns_per_tgt); 58 GET_CONFIG(intr_mode); 59 GET_CONFIG(wq_copy_count); 60 61 if ((c->flags & (VFCF_FC_INITIATOR)) == 0) { 62 dev_info(&fnic->pdev->dev, "vNIC role not defined (def role: FC Init)\n"); 63 c->flags |= VFCF_FC_INITIATOR; 64 } 65 66 c->wq_enet_desc_count = 67 min_t(u32, VNIC_FNIC_WQ_DESCS_MAX, 68 max_t(u32, VNIC_FNIC_WQ_DESCS_MIN, 69 c->wq_enet_desc_count)); 70 c->wq_enet_desc_count = ALIGN(c->wq_enet_desc_count, 16); 71 72 c->wq_copy_desc_count = 73 min_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MAX, 74 max_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MIN, 75 c->wq_copy_desc_count)); 76 c->wq_copy_desc_count = ALIGN(c->wq_copy_desc_count, 16); 77 78 c->rq_desc_count = 79 min_t(u32, VNIC_FNIC_RQ_DESCS_MAX, 80 max_t(u32, VNIC_FNIC_RQ_DESCS_MIN, 81 c->rq_desc_count)); 82 c->rq_desc_count = ALIGN(c->rq_desc_count, 16); 83 84 c->maxdatafieldsize = 85 min_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MAX, 86 max_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MIN, 87 c->maxdatafieldsize)); 88 c->ed_tov = 89 min_t(u32, VNIC_FNIC_EDTOV_MAX, 90 max_t(u32, VNIC_FNIC_EDTOV_MIN, 91 c->ed_tov)); 92 93 c->ra_tov = 94 min_t(u32, VNIC_FNIC_RATOV_MAX, 95 max_t(u32, VNIC_FNIC_RATOV_MIN, 96 c->ra_tov)); 97 98 c->flogi_retries = 99 min_t(u32, VNIC_FNIC_FLOGI_RETRIES_MAX, c->flogi_retries); 100 101 c->flogi_timeout = 102 min_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MAX, 103 max_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MIN, 104 c->flogi_timeout)); 105 106 c->plogi_retries = 107 min_t(u32, VNIC_FNIC_PLOGI_RETRIES_MAX, c->plogi_retries); 108 109 c->plogi_timeout = 110 min_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MAX, 111 max_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MIN, 112 c->plogi_timeout)); 113 114 c->io_throttle_count = 115 min_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MAX, 116 max_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MIN, 117 c->io_throttle_count)); 118 119 c->link_down_timeout = 120 min_t(u32, VNIC_FNIC_LINK_DOWN_TIMEOUT_MAX, 121 c->link_down_timeout); 122 123 c->port_down_timeout = 124 min_t(u32, VNIC_FNIC_PORT_DOWN_TIMEOUT_MAX, 125 c->port_down_timeout); 126 127 c->port_down_io_retries = 128 min_t(u32, VNIC_FNIC_PORT_DOWN_IO_RETRIES_MAX, 129 c->port_down_io_retries); 130 131 c->luns_per_tgt = 132 min_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MAX, 133 max_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MIN, 134 c->luns_per_tgt)); 135 136 c->intr_timer = min_t(u16, VNIC_INTR_TIMER_MAX, c->intr_timer); 137 138 /* for older firmware, GET_CONFIG will not return anything */ 139 if (c->wq_copy_count == 0) 140 c->wq_copy_count = 1; 141 142 c->wq_copy_count = min_t(u16, FNIC_WQ_COPY_MAX, c->wq_copy_count); 143 144 dev_info(&fnic->pdev->dev, "fNIC MAC addr %p wq/wq_copy/rq %d/%d/%d\n", 145 fnic->data_src_addr, 146 c->wq_enet_desc_count, c->wq_copy_desc_count, 147 c->rq_desc_count); 148 dev_info(&fnic->pdev->dev, "fNIC node wwn 0x%llx port wwn 0x%llx\n", 149 c->node_wwn, c->port_wwn); 150 dev_info(&fnic->pdev->dev, "fNIC ed_tov %d ra_tov %d\n", 151 c->ed_tov, c->ra_tov); 152 dev_info(&fnic->pdev->dev, "fNIC mtu %d intr timer %d\n", 153 c->maxdatafieldsize, c->intr_timer); 154 dev_info(&fnic->pdev->dev, "fNIC flags 0x%x luns per tgt %d\n", 155 c->flags, c->luns_per_tgt); 156 dev_info(&fnic->pdev->dev, "fNIC flogi_retries %d flogi timeout %d\n", 157 c->flogi_retries, c->flogi_timeout); 158 dev_info(&fnic->pdev->dev, "fNIC plogi retries %d plogi timeout %d\n", 159 c->plogi_retries, c->plogi_timeout); 160 dev_info(&fnic->pdev->dev, "fNIC io throttle count %d link dn timeout %d\n", 161 c->io_throttle_count, c->link_down_timeout); 162 dev_info(&fnic->pdev->dev, "fNIC port dn io retries %d port dn timeout %d\n", 163 c->port_down_io_retries, c->port_down_timeout); 164 dev_info(&fnic->pdev->dev, "fNIC wq_copy_count: %d\n", c->wq_copy_count); 165 dev_info(&fnic->pdev->dev, "fNIC intr mode: %d\n", c->intr_mode); 166 167 return 0; 168 } 169 170 int fnic_set_nic_config(struct fnic *fnic, u8 rss_default_cpu, 171 u8 rss_hash_type, 172 u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, 173 u8 tso_ipid_split_en, u8 ig_vlan_strip_en) 174 { 175 u64 a0, a1; 176 u32 nic_cfg; 177 int wait = 1000; 178 179 vnic_set_nic_cfg(&nic_cfg, rss_default_cpu, 180 rss_hash_type, rss_hash_bits, rss_base_cpu, 181 rss_enable, tso_ipid_split_en, ig_vlan_strip_en); 182 183 a0 = nic_cfg; 184 a1 = 0; 185 186 return vnic_dev_cmd(fnic->vdev, CMD_NIC_CFG, &a0, &a1, wait); 187 } 188 189 void fnic_get_res_counts(struct fnic *fnic) 190 { 191 fnic->wq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_WQ); 192 fnic->raw_wq_count = 1; 193 fnic->wq_copy_count = fnic->config.wq_copy_count; 194 fnic->rq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_RQ); 195 fnic->cq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_CQ); 196 fnic->intr_count = vnic_dev_get_res_count(fnic->vdev, 197 RES_TYPE_INTR_CTRL); 198 199 dev_info(&fnic->pdev->dev, "vNIC fw resources wq_count: %d\n", fnic->wq_count); 200 dev_info(&fnic->pdev->dev, "vNIC fw resources raw_wq_count: %d\n", fnic->raw_wq_count); 201 dev_info(&fnic->pdev->dev, "vNIC fw resources wq_copy_count: %d\n", fnic->wq_copy_count); 202 dev_info(&fnic->pdev->dev, "vNIC fw resources rq_count: %d\n", fnic->rq_count); 203 dev_info(&fnic->pdev->dev, "vNIC fw resources cq_count: %d\n", fnic->cq_count); 204 dev_info(&fnic->pdev->dev, "vNIC fw resources intr_count: %d\n", fnic->intr_count); 205 } 206 207 void fnic_free_vnic_resources(struct fnic *fnic) 208 { 209 unsigned int i; 210 211 for (i = 0; i < fnic->raw_wq_count; i++) 212 vnic_wq_free(&fnic->wq[i]); 213 214 for (i = 0; i < fnic->wq_copy_count; i++) 215 vnic_wq_copy_free(&fnic->hw_copy_wq[i]); 216 217 for (i = 0; i < fnic->rq_count; i++) 218 vnic_rq_free(&fnic->rq[i]); 219 220 for (i = 0; i < fnic->cq_count; i++) 221 vnic_cq_free(&fnic->cq[i]); 222 223 for (i = 0; i < fnic->intr_count; i++) 224 vnic_intr_free(&fnic->intr[i]); 225 } 226 227 int fnic_alloc_vnic_resources(struct fnic *fnic) 228 { 229 enum vnic_dev_intr_mode intr_mode; 230 unsigned int mask_on_assertion; 231 unsigned int interrupt_offset; 232 unsigned int error_interrupt_enable; 233 unsigned int error_interrupt_offset; 234 unsigned int i, cq_index; 235 unsigned int wq_copy_cq_desc_count; 236 int err; 237 238 intr_mode = vnic_dev_get_intr_mode(fnic->vdev); 239 240 dev_info(&fnic->pdev->dev, "vNIC interrupt mode: %s\n", 241 intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" : 242 intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" : 243 intr_mode == VNIC_DEV_INTR_MODE_MSIX ? 244 "MSI-X" : "unknown"); 245 246 dev_info(&fnic->pdev->dev, "res avail: wq %d cp_wq %d raw_wq %d rq %d", 247 fnic->wq_count, fnic->wq_copy_count, 248 fnic->raw_wq_count, fnic->rq_count); 249 250 dev_info(&fnic->pdev->dev, "res avail: cq %d intr %d cpy-wq desc count %d\n", 251 fnic->cq_count, fnic->intr_count, 252 fnic->config.wq_copy_desc_count); 253 254 /* Allocate Raw WQ used for FCS frames */ 255 for (i = 0; i < fnic->raw_wq_count; i++) { 256 err = vnic_wq_alloc(fnic->vdev, &fnic->wq[i], i, 257 fnic->config.wq_enet_desc_count, 258 sizeof(struct wq_enet_desc)); 259 if (err) 260 goto err_out_cleanup; 261 } 262 263 /* Allocate Copy WQs used for SCSI IOs */ 264 for (i = 0; i < fnic->wq_copy_count; i++) { 265 err = vnic_wq_copy_alloc(fnic->vdev, &fnic->hw_copy_wq[i], 266 (fnic->raw_wq_count + i), 267 fnic->config.wq_copy_desc_count, 268 sizeof(struct fcpio_host_req)); 269 if (err) 270 goto err_out_cleanup; 271 } 272 273 /* RQ for receiving FCS frames */ 274 for (i = 0; i < fnic->rq_count; i++) { 275 err = vnic_rq_alloc(fnic->vdev, &fnic->rq[i], i, 276 fnic->config.rq_desc_count, 277 sizeof(struct rq_enet_desc)); 278 if (err) 279 goto err_out_cleanup; 280 } 281 282 /* CQ for each RQ */ 283 for (i = 0; i < fnic->rq_count; i++) { 284 cq_index = i; 285 err = vnic_cq_alloc(fnic->vdev, 286 &fnic->cq[cq_index], cq_index, 287 fnic->config.rq_desc_count, 288 sizeof(struct cq_enet_rq_desc)); 289 if (err) 290 goto err_out_cleanup; 291 } 292 293 /* CQ for each WQ */ 294 for (i = 0; i < fnic->raw_wq_count; i++) { 295 cq_index = fnic->rq_count + i; 296 err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index], cq_index, 297 fnic->config.wq_enet_desc_count, 298 sizeof(struct cq_enet_wq_desc)); 299 if (err) 300 goto err_out_cleanup; 301 } 302 303 /* CQ for each COPY WQ */ 304 wq_copy_cq_desc_count = (fnic->config.wq_copy_desc_count * 3); 305 for (i = 0; i < fnic->wq_copy_count; i++) { 306 cq_index = fnic->raw_wq_count + fnic->rq_count + i; 307 err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index], 308 cq_index, 309 wq_copy_cq_desc_count, 310 sizeof(struct fcpio_fw_req)); 311 if (err) 312 goto err_out_cleanup; 313 } 314 315 for (i = 0; i < fnic->intr_count; i++) { 316 err = vnic_intr_alloc(fnic->vdev, &fnic->intr[i], i); 317 if (err) 318 goto err_out_cleanup; 319 } 320 321 fnic->legacy_pba = vnic_dev_get_res(fnic->vdev, 322 RES_TYPE_INTR_PBA_LEGACY, 0); 323 324 if (!fnic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) { 325 dev_err(&fnic->pdev->dev, "Failed to hook legacy pba resource\n"); 326 err = -ENODEV; 327 goto err_out_cleanup; 328 } 329 330 /* 331 * Init RQ/WQ resources. 332 * 333 * RQ[0 to n-1] point to CQ[0 to n-1] 334 * WQ[0 to m-1] point to CQ[n to n+m-1] 335 * WQ_COPY[0 to k-1] points to CQ[n+m to n+m+k-1] 336 * 337 * Note for copy wq we always initialize with cq_index = 0 338 * 339 * Error interrupt is not enabled for MSI. 340 */ 341 342 switch (intr_mode) { 343 case VNIC_DEV_INTR_MODE_INTX: 344 case VNIC_DEV_INTR_MODE_MSIX: 345 error_interrupt_enable = 1; 346 error_interrupt_offset = fnic->err_intr_offset; 347 break; 348 default: 349 error_interrupt_enable = 0; 350 error_interrupt_offset = 0; 351 break; 352 } 353 354 for (i = 0; i < fnic->rq_count; i++) { 355 cq_index = i; 356 vnic_rq_init(&fnic->rq[i], 357 cq_index, 358 error_interrupt_enable, 359 error_interrupt_offset); 360 } 361 362 for (i = 0; i < fnic->raw_wq_count; i++) { 363 cq_index = i + fnic->rq_count; 364 vnic_wq_init(&fnic->wq[i], 365 cq_index, 366 error_interrupt_enable, 367 error_interrupt_offset); 368 } 369 370 for (i = 0; i < fnic->wq_copy_count; i++) { 371 vnic_wq_copy_init(&fnic->hw_copy_wq[i], 372 0 /* cq_index 0 - always */, 373 error_interrupt_enable, 374 error_interrupt_offset); 375 } 376 377 for (i = 0; i < fnic->cq_count; i++) { 378 379 switch (intr_mode) { 380 case VNIC_DEV_INTR_MODE_MSIX: 381 interrupt_offset = i; 382 break; 383 default: 384 interrupt_offset = 0; 385 break; 386 } 387 388 vnic_cq_init(&fnic->cq[i], 389 0 /* flow_control_enable */, 390 1 /* color_enable */, 391 0 /* cq_head */, 392 0 /* cq_tail */, 393 1 /* cq_tail_color */, 394 1 /* interrupt_enable */, 395 1 /* cq_entry_enable */, 396 0 /* cq_message_enable */, 397 interrupt_offset, 398 0 /* cq_message_addr */); 399 } 400 401 /* 402 * Init INTR resources 403 * 404 * mask_on_assertion is not used for INTx due to the level- 405 * triggered nature of INTx 406 */ 407 408 switch (intr_mode) { 409 case VNIC_DEV_INTR_MODE_MSI: 410 case VNIC_DEV_INTR_MODE_MSIX: 411 mask_on_assertion = 1; 412 break; 413 default: 414 mask_on_assertion = 0; 415 break; 416 } 417 418 for (i = 0; i < fnic->intr_count; i++) { 419 vnic_intr_init(&fnic->intr[i], 420 fnic->config.intr_timer, 421 fnic->config.intr_timer_type, 422 mask_on_assertion); 423 } 424 425 /* init the stats memory by making the first call here */ 426 err = vnic_dev_stats_dump(fnic->vdev, &fnic->stats); 427 if (err) { 428 dev_err(&fnic->pdev->dev, "vnic_dev_stats_dump failed - x%x\n", err); 429 goto err_out_cleanup; 430 } 431 432 /* Clear LIF stats */ 433 vnic_dev_stats_clear(fnic->vdev); 434 435 return 0; 436 437 err_out_cleanup: 438 fnic_free_vnic_resources(fnic); 439 440 return err; 441 } 442