drivers/net/qlcnic/qlcnic_ctx.c

   1 /*
   2  * Copyright (C) 2009 - QLogic Corporation.
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  18  * MA  02111-1307, USA.
  19  *
  20  * The full GNU General Public License is included in this distribution
  21  * in the file called "COPYING".
  22  *
  23  */
  24
  25 #include "qlcnic.h"
  26
  27 static u32
  28 qlcnic_poll_rsp(struct qlcnic_adapter *adapter)
  29 {
  30         u32 rsp;
  31         int timeout = 0;
  32
  33         do {
  34                 /* give atleast 1ms for firmware to respond */
  35                 msleep(1);
  36
  37                 if (++timeout > QLCNIC_OS_CRB_RETRY_COUNT)
  38                         return QLCNIC_CDRP_RSP_TIMEOUT;
  39
  40                 rsp = QLCRD32(adapter, QLCNIC_CDRP_CRB_OFFSET);
  41         } while (!QLCNIC_CDRP_IS_RSP(rsp));
  42
  43         return rsp;
  44 }
  45
  46 u32
  47 qlcnic_issue_cmd(struct qlcnic_adapter *adapter,
  48         u32 pci_fn, u32 version, u32 arg1, u32 arg2, u32 arg3, u32 cmd)
  49 {
  50         u32 rsp;
  51         u32 signature;
  52         u32 rcode = QLCNIC_RCODE_SUCCESS;
  53         struct pci_dev *pdev = adapter->pdev;
  54
  55         signature = QLCNIC_CDRP_SIGNATURE_MAKE(pci_fn, version);
  56
  57         /* Acquire semaphore before accessing CRB */
  58         if (qlcnic_api_lock(adapter))
  59                 return QLCNIC_RCODE_TIMEOUT;
  60
  61         QLCWR32(adapter, QLCNIC_SIGN_CRB_OFFSET, signature);
  62         QLCWR32(adapter, QLCNIC_ARG1_CRB_OFFSET, arg1);
  63         QLCWR32(adapter, QLCNIC_ARG2_CRB_OFFSET, arg2);
  64         QLCWR32(adapter, QLCNIC_ARG3_CRB_OFFSET, arg3);
  65         QLCWR32(adapter, QLCNIC_CDRP_CRB_OFFSET, QLCNIC_CDRP_FORM_CMD(cmd));
  66
  67         rsp = qlcnic_poll_rsp(adapter);
  68
  69         if (rsp == QLCNIC_CDRP_RSP_TIMEOUT) {
  70                 dev_err(&pdev->dev, "card response timeout.\n");
  71                 rcode = QLCNIC_RCODE_TIMEOUT;
  72         } else if (rsp == QLCNIC_CDRP_RSP_FAIL) {
  73                 rcode = QLCRD32(adapter, QLCNIC_ARG1_CRB_OFFSET);
  74                 dev_err(&pdev->dev, "failed card response code:0x%x\n",
  75                                 rcode);
  76         }
  77
  78         /* Release semaphore */
  79         qlcnic_api_unlock(adapter);
  80
  81         return rcode;
  82 }
  83
  84 int
  85 qlcnic_fw_cmd_set_mtu(struct qlcnic_adapter *adapter, int mtu)
  86 {
  87         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
  88
  89         if (recv_ctx->state == QLCNIC_HOST_CTX_STATE_ACTIVE) {
  90                 if (qlcnic_issue_cmd(adapter,
  91                                 adapter->ahw.pci_func,
  92                                 QLCHAL_VERSION,
  93                                 recv_ctx->context_id,
  94                                 mtu,
  95                                 0,
  96                                 QLCNIC_CDRP_CMD_SET_MTU)) {
  97
  98                         dev_err(&adapter->pdev->dev, "Failed to set mtu\n");
  99                         return -EIO;
 100                 }
 101         }
 102
 103         return 0;
 104 }
 105
 106 static int
 107 qlcnic_fw_cmd_create_rx_ctx(struct qlcnic_adapter *adapter)
 108 {
 109         void *addr;
 110         struct qlcnic_hostrq_rx_ctx *prq;
 111         struct qlcnic_cardrsp_rx_ctx *prsp;
 112         struct qlcnic_hostrq_rds_ring *prq_rds;
 113         struct qlcnic_hostrq_sds_ring *prq_sds;
 114         struct qlcnic_cardrsp_rds_ring *prsp_rds;
 115         struct qlcnic_cardrsp_sds_ring *prsp_sds;
 116         struct qlcnic_host_rds_ring *rds_ring;
 117         struct qlcnic_host_sds_ring *sds_ring;
 118
 119         dma_addr_t hostrq_phys_addr, cardrsp_phys_addr;
 120         u64 phys_addr;
 121
 122         int i, nrds_rings, nsds_rings;
 123         size_t rq_size, rsp_size;
 124         u32 cap, reg, val;
 125         int err;
 126
 127         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 128
 129         nrds_rings = adapter->max_rds_rings;
 130         nsds_rings = adapter->max_sds_rings;
 131
 132         rq_size =
 133                 SIZEOF_HOSTRQ_RX(struct qlcnic_hostrq_rx_ctx, nrds_rings,
 134                                                 nsds_rings);
 135         rsp_size =
 136                 SIZEOF_CARDRSP_RX(struct qlcnic_cardrsp_rx_ctx, nrds_rings,
 137                                                 nsds_rings);
 138
 139         addr = pci_alloc_consistent(adapter->pdev,
 140                                 rq_size, &hostrq_phys_addr);
 141         if (addr == NULL)
 142                 return -ENOMEM;
 143         prq = (struct qlcnic_hostrq_rx_ctx *)addr;
 144
 145         addr = pci_alloc_consistent(adapter->pdev,
 146                         rsp_size, &cardrsp_phys_addr);
 147         if (addr == NULL) {
 148                 err = -ENOMEM;
 149                 goto out_free_rq;
 150         }
 151         prsp = (struct qlcnic_cardrsp_rx_ctx *)addr;
 152
 153         prq->host_rsp_dma_addr = cpu_to_le64(cardrsp_phys_addr);
 154
 155         cap = (QLCNIC_CAP0_LEGACY_CONTEXT | QLCNIC_CAP0_LEGACY_MN);
 156         cap |= (QLCNIC_CAP0_JUMBO_CONTIGUOUS | QLCNIC_CAP0_LRO_CONTIGUOUS);
 157
 158         prq->capabilities[0] = cpu_to_le32(cap);
 159         prq->host_int_crb_mode =
 160                 cpu_to_le32(QLCNIC_HOST_INT_CRB_MODE_SHARED);
 161         prq->host_rds_crb_mode =
 162                 cpu_to_le32(QLCNIC_HOST_RDS_CRB_MODE_UNIQUE);
 163
 164         prq->num_rds_rings = cpu_to_le16(nrds_rings);
 165         prq->num_sds_rings = cpu_to_le16(nsds_rings);
 166         prq->rds_ring_offset = cpu_to_le32(0);
 167
 168         val = le32_to_cpu(prq->rds_ring_offset) +
 169                 (sizeof(struct qlcnic_hostrq_rds_ring) * nrds_rings);
 170         prq->sds_ring_offset = cpu_to_le32(val);
 171
 172         prq_rds = (struct qlcnic_hostrq_rds_ring *)(prq->data +
 173                         le32_to_cpu(prq->rds_ring_offset));
 174
 175         for (i = 0; i < nrds_rings; i++) {
 176
 177                 rds_ring = &recv_ctx->rds_rings[i];
 178
 179                 prq_rds[i].host_phys_addr = cpu_to_le64(rds_ring->phys_addr);
 180                 prq_rds[i].ring_size = cpu_to_le32(rds_ring->num_desc);
 181                 prq_rds[i].ring_kind = cpu_to_le32(i);
 182                 prq_rds[i].buff_size = cpu_to_le64(rds_ring->dma_size);
 183         }
 184
 185         prq_sds = (struct qlcnic_hostrq_sds_ring *)(prq->data +
 186                         le32_to_cpu(prq->sds_ring_offset));
 187
 188         for (i = 0; i < nsds_rings; i++) {
 189
 190                 sds_ring = &recv_ctx->sds_rings[i];
 191
 192                 prq_sds[i].host_phys_addr = cpu_to_le64(sds_ring->phys_addr);
 193                 prq_sds[i].ring_size = cpu_to_le32(sds_ring->num_desc);
 194                 prq_sds[i].msi_index = cpu_to_le16(i);
 195         }
 196
 197         phys_addr = hostrq_phys_addr;
 198         err = qlcnic_issue_cmd(adapter,
 199                         adapter->ahw.pci_func,
 200                         QLCHAL_VERSION,
 201                         (u32)(phys_addr >> 32),
 202                         (u32)(phys_addr & 0xffffffff),
 203                         rq_size,
 204                         QLCNIC_CDRP_CMD_CREATE_RX_CTX);
 205         if (err) {
 206                 dev_err(&adapter->pdev->dev,
 207                         "Failed to create rx ctx in firmware%d\n", err);
 208                 goto out_free_rsp;
 209         }
 210
 211
 212         prsp_rds = ((struct qlcnic_cardrsp_rds_ring *)
 213                          &prsp->data[le32_to_cpu(prsp->rds_ring_offset)]);
 214
 215         for (i = 0; i < le16_to_cpu(prsp->num_rds_rings); i++) {
 216                 rds_ring = &recv_ctx->rds_rings[i];
 217
 218                 reg = le32_to_cpu(prsp_rds[i].host_producer_crb);
 219                 rds_ring->crb_rcv_producer = qlcnic_get_ioaddr(adapter,
 220                                 QLCNIC_REG(reg - 0x200));
 221         }
 222
 223         prsp_sds = ((struct qlcnic_cardrsp_sds_ring *)
 224                         &prsp->data[le32_to_cpu(prsp->sds_ring_offset)]);
 225
 226         for (i = 0; i < le16_to_cpu(prsp->num_sds_rings); i++) {
 227                 sds_ring = &recv_ctx->sds_rings[i];
 228
 229                 reg = le32_to_cpu(prsp_sds[i].host_consumer_crb);
 230                 sds_ring->crb_sts_consumer = qlcnic_get_ioaddr(adapter,
 231                                 QLCNIC_REG(reg - 0x200));
 232
 233                 reg = le32_to_cpu(prsp_sds[i].interrupt_crb);
 234                 sds_ring->crb_intr_mask = qlcnic_get_ioaddr(adapter,
 235                                 QLCNIC_REG(reg - 0x200));
 236         }
 237
 238         recv_ctx->state = le32_to_cpu(prsp->host_ctx_state);
 239         recv_ctx->context_id = le16_to_cpu(prsp->context_id);
 240         recv_ctx->virt_port = prsp->virt_port;
 241
 242 out_free_rsp:
 243         pci_free_consistent(adapter->pdev, rsp_size, prsp, cardrsp_phys_addr);
 244 out_free_rq:
 245         pci_free_consistent(adapter->pdev, rq_size, prq, hostrq_phys_addr);
 246         return err;
 247 }
 248
 249 static void
 250 qlcnic_fw_cmd_destroy_rx_ctx(struct qlcnic_adapter *adapter)
 251 {
 252         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 253
 254         if (qlcnic_issue_cmd(adapter,
 255                         adapter->ahw.pci_func,
 256                         QLCHAL_VERSION,
 257                         recv_ctx->context_id,
 258                         QLCNIC_DESTROY_CTX_RESET,
 259                         0,
 260                         QLCNIC_CDRP_CMD_DESTROY_RX_CTX)) {
 261
 262                 dev_err(&adapter->pdev->dev,
 263                         "Failed to destroy rx ctx in firmware\n");
 264         }
 265 }
 266
 267 static int
 268 qlcnic_fw_cmd_create_tx_ctx(struct qlcnic_adapter *adapter)
 269 {
 270         struct qlcnic_hostrq_tx_ctx     *prq;
 271         struct qlcnic_hostrq_cds_ring   *prq_cds;
 272         struct qlcnic_cardrsp_tx_ctx    *prsp;
 273         void    *rq_addr, *rsp_addr;
 274         size_t  rq_size, rsp_size;
 275         u32     temp;
 276         int     err;
 277         u64     phys_addr;
 278         dma_addr_t      rq_phys_addr, rsp_phys_addr;
 279         struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
 280
 281         rq_size = SIZEOF_HOSTRQ_TX(struct qlcnic_hostrq_tx_ctx);
 282         rq_addr = pci_alloc_consistent(adapter->pdev,
 283                 rq_size, &rq_phys_addr);
 284         if (!rq_addr)
 285                 return -ENOMEM;
 286
 287         rsp_size = SIZEOF_CARDRSP_TX(struct qlcnic_cardrsp_tx_ctx);
 288         rsp_addr = pci_alloc_consistent(adapter->pdev,
 289                 rsp_size, &rsp_phys_addr);
 290         if (!rsp_addr) {
 291                 err = -ENOMEM;
 292                 goto out_free_rq;
 293         }
 294
 295         memset(rq_addr, 0, rq_size);
 296         prq = (struct qlcnic_hostrq_tx_ctx *)rq_addr;
 297
 298         memset(rsp_addr, 0, rsp_size);
 299         prsp = (struct qlcnic_cardrsp_tx_ctx *)rsp_addr;
 300
 301         prq->host_rsp_dma_addr = cpu_to_le64(rsp_phys_addr);
 302
 303         temp = (QLCNIC_CAP0_LEGACY_CONTEXT | QLCNIC_CAP0_LEGACY_MN |
 304                                         QLCNIC_CAP0_LSO);
 305         prq->capabilities[0] = cpu_to_le32(temp);
 306
 307         prq->host_int_crb_mode =
 308                 cpu_to_le32(QLCNIC_HOST_INT_CRB_MODE_SHARED);
 309
 310         prq->interrupt_ctl = 0;
 311         prq->msi_index = 0;
 312         prq->cmd_cons_dma_addr = cpu_to_le64(tx_ring->hw_cons_phys_addr);
 313
 314         prq_cds = &prq->cds_ring;
 315
 316         prq_cds->host_phys_addr = cpu_to_le64(tx_ring->phys_addr);
 317         prq_cds->ring_size = cpu_to_le32(tx_ring->num_desc);
 318
 319         phys_addr = rq_phys_addr;
 320         err = qlcnic_issue_cmd(adapter,
 321                         adapter->ahw.pci_func,
 322                         QLCHAL_VERSION,
 323                         (u32)(phys_addr >> 32),
 324                         ((u32)phys_addr & 0xffffffff),
 325                         rq_size,
 326                         QLCNIC_CDRP_CMD_CREATE_TX_CTX);
 327
 328         if (err == QLCNIC_RCODE_SUCCESS) {
 329                 temp = le32_to_cpu(prsp->cds_ring.host_producer_crb);
 330                 tx_ring->crb_cmd_producer = qlcnic_get_ioaddr(adapter,
 331                                 QLCNIC_REG(temp - 0x200));
 332
 333                 adapter->tx_context_id =
 334                         le16_to_cpu(prsp->context_id);
 335         } else {
 336                 dev_err(&adapter->pdev->dev,
 337                         "Failed to create tx ctx in firmware%d\n", err);
 338                 err = -EIO;
 339         }
 340
 341         pci_free_consistent(adapter->pdev, rsp_size, rsp_addr, rsp_phys_addr);
 342
 343 out_free_rq:
 344         pci_free_consistent(adapter->pdev, rq_size, rq_addr, rq_phys_addr);
 345
 346         return err;
 347 }
 348
 349 static void
 350 qlcnic_fw_cmd_destroy_tx_ctx(struct qlcnic_adapter *adapter)
 351 {
 352         if (qlcnic_issue_cmd(adapter,
 353                         adapter->ahw.pci_func,
 354                         QLCHAL_VERSION,
 355                         adapter->tx_context_id,
 356                         QLCNIC_DESTROY_CTX_RESET,
 357                         0,
 358                         QLCNIC_CDRP_CMD_DESTROY_TX_CTX)) {
 359
 360                 dev_err(&adapter->pdev->dev,
 361                         "Failed to destroy tx ctx in firmware\n");
 362         }
 363 }
 364
 365 int
 366 qlcnic_fw_cmd_query_phy(struct qlcnic_adapter *adapter, u32 reg, u32 *val)
 367 {
 368
 369         if (qlcnic_issue_cmd(adapter,
 370                         adapter->ahw.pci_func,
 371                         QLCHAL_VERSION,
 372                         reg,
 373                         0,
 374                         0,
 375                         QLCNIC_CDRP_CMD_READ_PHY)) {
 376
 377                 return -EIO;
 378         }
 379
 380         return QLCRD32(adapter, QLCNIC_ARG1_CRB_OFFSET);
 381 }
 382
 383 int
 384 qlcnic_fw_cmd_set_phy(struct qlcnic_adapter *adapter, u32 reg, u32 val)
 385 {
 386         return qlcnic_issue_cmd(adapter,
 387                         adapter->ahw.pci_func,
 388                         QLCHAL_VERSION,
 389                         reg,
 390                         val,
 391                         0,
 392                         QLCNIC_CDRP_CMD_WRITE_PHY);
 393 }
 394
 395 int qlcnic_alloc_hw_resources(struct qlcnic_adapter *adapter)
 396 {
 397         void *addr;
 398         int err;
 399         int ring;
 400         struct qlcnic_recv_context *recv_ctx;
 401         struct qlcnic_host_rds_ring *rds_ring;
 402         struct qlcnic_host_sds_ring *sds_ring;
 403         struct qlcnic_host_tx_ring *tx_ring;
 404
 405         struct pci_dev *pdev = adapter->pdev;
 406
 407         recv_ctx = &adapter->recv_ctx;
 408         tx_ring = adapter->tx_ring;
 409
 410         tx_ring->hw_consumer = (__le32 *)pci_alloc_consistent(pdev, sizeof(u32),
 411                                                 &tx_ring->hw_cons_phys_addr);
 412         if (tx_ring->hw_consumer == NULL) {
 413                 dev_err(&pdev->dev, "failed to allocate tx consumer\n");
 414                 return -ENOMEM;
 415         }
 416         *(tx_ring->hw_consumer) = 0;
 417
 418         /* cmd desc ring */
 419         addr = pci_alloc_consistent(pdev, TX_DESC_RINGSIZE(tx_ring),
 420                         &tx_ring->phys_addr);
 421
 422         if (addr == NULL) {
 423                 dev_err(&pdev->dev, "failed to allocate tx desc ring\n");
 424                 err = -ENOMEM;
 425                 goto err_out_free;
 426         }
 427
 428         tx_ring->desc_head = (struct cmd_desc_type0 *)addr;
 429
 430         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 431                 rds_ring = &recv_ctx->rds_rings[ring];
 432                 addr = pci_alloc_consistent(adapter->pdev,
 433                                 RCV_DESC_RINGSIZE(rds_ring),
 434                                 &rds_ring->phys_addr);
 435                 if (addr == NULL) {
 436                         dev_err(&pdev->dev,
 437                                 "failed to allocate rds ring [%d]\n", ring);
 438                         err = -ENOMEM;
 439                         goto err_out_free;
 440                 }
 441                 rds_ring->desc_head = (struct rcv_desc *)addr;
 442
 443         }
 444
 445         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 446                 sds_ring = &recv_ctx->sds_rings[ring];
 447
 448                 addr = pci_alloc_consistent(adapter->pdev,
 449                                 STATUS_DESC_RINGSIZE(sds_ring),
 450                                 &sds_ring->phys_addr);
 451                 if (addr == NULL) {
 452                         dev_err(&pdev->dev,
 453                                 "failed to allocate sds ring [%d]\n", ring);
 454                         err = -ENOMEM;
 455                         goto err_out_free;
 456                 }
 457                 sds_ring->desc_head = (struct status_desc *)addr;
 458         }
 459
 460
 461         err = qlcnic_fw_cmd_create_rx_ctx(adapter);
 462         if (err)
 463                 goto err_out_free;
 464         err = qlcnic_fw_cmd_create_tx_ctx(adapter);
 465         if (err)
 466                 goto err_out_free;
 467
 468         set_bit(__QLCNIC_FW_ATTACHED, &adapter->state);
 469         return 0;
 470
 471 err_out_free:
 472         qlcnic_free_hw_resources(adapter);
 473         return err;
 474 }
 475
 476 void qlcnic_free_hw_resources(struct qlcnic_adapter *adapter)
 477 {
 478         struct qlcnic_recv_context *recv_ctx;
 479         struct qlcnic_host_rds_ring *rds_ring;
 480         struct qlcnic_host_sds_ring *sds_ring;
 481         struct qlcnic_host_tx_ring *tx_ring;
 482         int ring;
 483
 484
 485         if (test_and_clear_bit(__QLCNIC_FW_ATTACHED, &adapter->state)) {
 486                 qlcnic_fw_cmd_destroy_rx_ctx(adapter);
 487                 qlcnic_fw_cmd_destroy_tx_ctx(adapter);
 488
 489                 /* Allow dma queues to drain after context reset */
 490                 msleep(20);
 491         }
 492
 493         recv_ctx = &adapter->recv_ctx;
 494
 495         tx_ring = adapter->tx_ring;
 496         if (tx_ring->hw_consumer != NULL) {
 497                 pci_free_consistent(adapter->pdev,
 498                                 sizeof(u32),
 499                                 tx_ring->hw_consumer,
 500                                 tx_ring->hw_cons_phys_addr);
 501                 tx_ring->hw_consumer = NULL;
 502         }
 503
 504         if (tx_ring->desc_head != NULL) {
 505                 pci_free_consistent(adapter->pdev,
 506                                 TX_DESC_RINGSIZE(tx_ring),
 507                                 tx_ring->desc_head, tx_ring->phys_addr);
 508                 tx_ring->desc_head = NULL;
 509         }
 510
 511         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 512                 rds_ring = &recv_ctx->rds_rings[ring];
 513
 514                 if (rds_ring->desc_head != NULL) {
 515                         pci_free_consistent(adapter->pdev,
 516                                         RCV_DESC_RINGSIZE(rds_ring),
 517                                         rds_ring->desc_head,
 518                                         rds_ring->phys_addr);
 519                         rds_ring->desc_head = NULL;
 520                 }
 521         }
 522
 523         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 524                 sds_ring = &recv_ctx->sds_rings[ring];
 525
 526                 if (sds_ring->desc_head != NULL) {
 527                         pci_free_consistent(adapter->pdev,
 528                                 STATUS_DESC_RINGSIZE(sds_ring),
 529                                 sds_ring->desc_head,
 530                                 sds_ring->phys_addr);
 531                         sds_ring->desc_head = NULL;
 532                 }
 533         }
 534 }
 535