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