drivers/net/ethernet/qlogic/qlcnic/qlcnic_init.c

   1 /*
   2  * QLogic qlcnic NIC Driver
   3  * Copyright (c)  2009-2010 QLogic Corporation
   4  *
   5  * See LICENSE.qlcnic for copyright and licensing details.
   6  */
   7
   8 #include <linux/netdevice.h>
   9 #include <linux/delay.h>
  10 #include <linux/slab.h>
  11 #include <linux/if_vlan.h>
  12 #include "qlcnic.h"
  13
  14 struct crb_addr_pair {
  15         u32 addr;
  16         u32 data;
  17 };
  18
  19 #define QLCNIC_MAX_CRB_XFORM 60
  20 static unsigned int crb_addr_xform[QLCNIC_MAX_CRB_XFORM];
  21
  22 #define crb_addr_transform(name) \
  23         (crb_addr_xform[QLCNIC_HW_PX_MAP_CRB_##name] = \
  24         QLCNIC_HW_CRB_HUB_AGT_ADR_##name << 20)
  25
  26 #define QLCNIC_ADDR_ERROR (0xffffffff)
  27
  28 static void
  29 qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
  30                 struct qlcnic_host_rds_ring *rds_ring);
  31
  32 static int
  33 qlcnic_check_fw_hearbeat(struct qlcnic_adapter *adapter);
  34
  35 static void crb_addr_transform_setup(void)
  36 {
  37         crb_addr_transform(XDMA);
  38         crb_addr_transform(TIMR);
  39         crb_addr_transform(SRE);
  40         crb_addr_transform(SQN3);
  41         crb_addr_transform(SQN2);
  42         crb_addr_transform(SQN1);
  43         crb_addr_transform(SQN0);
  44         crb_addr_transform(SQS3);
  45         crb_addr_transform(SQS2);
  46         crb_addr_transform(SQS1);
  47         crb_addr_transform(SQS0);
  48         crb_addr_transform(RPMX7);
  49         crb_addr_transform(RPMX6);
  50         crb_addr_transform(RPMX5);
  51         crb_addr_transform(RPMX4);
  52         crb_addr_transform(RPMX3);
  53         crb_addr_transform(RPMX2);
  54         crb_addr_transform(RPMX1);
  55         crb_addr_transform(RPMX0);
  56         crb_addr_transform(ROMUSB);
  57         crb_addr_transform(SN);
  58         crb_addr_transform(QMN);
  59         crb_addr_transform(QMS);
  60         crb_addr_transform(PGNI);
  61         crb_addr_transform(PGND);
  62         crb_addr_transform(PGN3);
  63         crb_addr_transform(PGN2);
  64         crb_addr_transform(PGN1);
  65         crb_addr_transform(PGN0);
  66         crb_addr_transform(PGSI);
  67         crb_addr_transform(PGSD);
  68         crb_addr_transform(PGS3);
  69         crb_addr_transform(PGS2);
  70         crb_addr_transform(PGS1);
  71         crb_addr_transform(PGS0);
  72         crb_addr_transform(PS);
  73         crb_addr_transform(PH);
  74         crb_addr_transform(NIU);
  75         crb_addr_transform(I2Q);
  76         crb_addr_transform(EG);
  77         crb_addr_transform(MN);
  78         crb_addr_transform(MS);
  79         crb_addr_transform(CAS2);
  80         crb_addr_transform(CAS1);
  81         crb_addr_transform(CAS0);
  82         crb_addr_transform(CAM);
  83         crb_addr_transform(C2C1);
  84         crb_addr_transform(C2C0);
  85         crb_addr_transform(SMB);
  86         crb_addr_transform(OCM0);
  87         crb_addr_transform(I2C0);
  88 }
  89
  90 void qlcnic_release_rx_buffers(struct qlcnic_adapter *adapter)
  91 {
  92         struct qlcnic_recv_context *recv_ctx;
  93         struct qlcnic_host_rds_ring *rds_ring;
  94         struct qlcnic_rx_buffer *rx_buf;
  95         int i, ring;
  96
  97         recv_ctx = adapter->recv_ctx;
  98         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
  99                 rds_ring = &recv_ctx->rds_rings[ring];
 100                 for (i = 0; i < rds_ring->num_desc; ++i) {
 101                         rx_buf = &(rds_ring->rx_buf_arr[i]);
 102                         if (rx_buf->skb == NULL)
 103                                 continue;
 104
 105                         pci_unmap_single(adapter->pdev,
 106                                         rx_buf->dma,
 107                                         rds_ring->dma_size,
 108                                         PCI_DMA_FROMDEVICE);
 109
 110                         dev_kfree_skb_any(rx_buf->skb);
 111                 }
 112         }
 113 }
 114
 115 void qlcnic_reset_rx_buffers_list(struct qlcnic_adapter *adapter)
 116 {
 117         struct qlcnic_recv_context *recv_ctx;
 118         struct qlcnic_host_rds_ring *rds_ring;
 119         struct qlcnic_rx_buffer *rx_buf;
 120         int i, ring;
 121
 122         recv_ctx = adapter->recv_ctx;
 123         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 124                 rds_ring = &recv_ctx->rds_rings[ring];
 125
 126                 INIT_LIST_HEAD(&rds_ring->free_list);
 127
 128                 rx_buf = rds_ring->rx_buf_arr;
 129                 for (i = 0; i < rds_ring->num_desc; i++) {
 130                         list_add_tail(&rx_buf->list,
 131                                         &rds_ring->free_list);
 132                         rx_buf++;
 133                 }
 134         }
 135 }
 136
 137 void qlcnic_release_tx_buffers(struct qlcnic_adapter *adapter)
 138 {
 139         struct qlcnic_cmd_buffer *cmd_buf;
 140         struct qlcnic_skb_frag *buffrag;
 141         int i, j;
 142         struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
 143
 144         cmd_buf = tx_ring->cmd_buf_arr;
 145         for (i = 0; i < tx_ring->num_desc; i++) {
 146                 buffrag = cmd_buf->frag_array;
 147                 if (buffrag->dma) {
 148                         pci_unmap_single(adapter->pdev, buffrag->dma,
 149                                          buffrag->length, PCI_DMA_TODEVICE);
 150                         buffrag->dma = 0ULL;
 151                 }
 152                 for (j = 0; j < cmd_buf->frag_count; j++) {
 153                         buffrag++;
 154                         if (buffrag->dma) {
 155                                 pci_unmap_page(adapter->pdev, buffrag->dma,
 156                                                buffrag->length,
 157                                                PCI_DMA_TODEVICE);
 158                                 buffrag->dma = 0ULL;
 159                         }
 160                 }
 161                 if (cmd_buf->skb) {
 162                         dev_kfree_skb_any(cmd_buf->skb);
 163                         cmd_buf->skb = NULL;
 164                 }
 165                 cmd_buf++;
 166         }
 167 }
 168
 169 void qlcnic_free_sw_resources(struct qlcnic_adapter *adapter)
 170 {
 171         struct qlcnic_recv_context *recv_ctx;
 172         struct qlcnic_host_rds_ring *rds_ring;
 173         struct qlcnic_host_tx_ring *tx_ring;
 174         int ring;
 175
 176         recv_ctx = adapter->recv_ctx;
 177
 178         if (recv_ctx->rds_rings == NULL)
 179                 goto skip_rds;
 180
 181         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 182                 rds_ring = &recv_ctx->rds_rings[ring];
 183                 vfree(rds_ring->rx_buf_arr);
 184                 rds_ring->rx_buf_arr = NULL;
 185         }
 186         kfree(recv_ctx->rds_rings);
 187
 188 skip_rds:
 189         if (adapter->tx_ring == NULL)
 190                 return;
 191
 192         tx_ring = adapter->tx_ring;
 193         vfree(tx_ring->cmd_buf_arr);
 194         tx_ring->cmd_buf_arr = NULL;
 195         kfree(adapter->tx_ring);
 196         adapter->tx_ring = NULL;
 197 }
 198
 199 int qlcnic_alloc_sw_resources(struct qlcnic_adapter *adapter)
 200 {
 201         struct qlcnic_recv_context *recv_ctx;
 202         struct qlcnic_host_rds_ring *rds_ring;
 203         struct qlcnic_host_sds_ring *sds_ring;
 204         struct qlcnic_host_tx_ring *tx_ring;
 205         struct qlcnic_rx_buffer *rx_buf;
 206         int ring, i, size;
 207
 208         struct qlcnic_cmd_buffer *cmd_buf_arr;
 209         struct net_device *netdev = adapter->netdev;
 210
 211         size = sizeof(struct qlcnic_host_tx_ring);
 212         tx_ring = kzalloc(size, GFP_KERNEL);
 213         if (tx_ring == NULL) {
 214                 dev_err(&netdev->dev, "failed to allocate tx ring struct\n");
 215                 return -ENOMEM;
 216         }
 217         adapter->tx_ring = tx_ring;
 218
 219         tx_ring->num_desc = adapter->num_txd;
 220         tx_ring->txq = netdev_get_tx_queue(netdev, 0);
 221
 222         cmd_buf_arr = vzalloc(TX_BUFF_RINGSIZE(tx_ring));
 223         if (cmd_buf_arr == NULL) {
 224                 dev_err(&netdev->dev, "failed to allocate cmd buffer ring\n");
 225                 goto err_out;
 226         }
 227         tx_ring->cmd_buf_arr = cmd_buf_arr;
 228
 229         recv_ctx = adapter->recv_ctx;
 230
 231         size = adapter->max_rds_rings * sizeof(struct qlcnic_host_rds_ring);
 232         rds_ring = kzalloc(size, GFP_KERNEL);
 233         if (rds_ring == NULL) {
 234                 dev_err(&netdev->dev, "failed to allocate rds ring struct\n");
 235                 goto err_out;
 236         }
 237         recv_ctx->rds_rings = rds_ring;
 238
 239         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 240                 rds_ring = &recv_ctx->rds_rings[ring];
 241                 switch (ring) {
 242                 case RCV_RING_NORMAL:
 243                         rds_ring->num_desc = adapter->num_rxd;
 244                         rds_ring->dma_size = QLCNIC_P3P_RX_BUF_MAX_LEN;
 245                         rds_ring->skb_size = rds_ring->dma_size + NET_IP_ALIGN;
 246                         break;
 247
 248                 case RCV_RING_JUMBO:
 249                         rds_ring->num_desc = adapter->num_jumbo_rxd;
 250                         rds_ring->dma_size =
 251                                 QLCNIC_P3P_RX_JUMBO_BUF_MAX_LEN;
 252
 253                         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
 254                                 rds_ring->dma_size += QLCNIC_LRO_BUFFER_EXTRA;
 255
 256                         rds_ring->skb_size =
 257                                 rds_ring->dma_size + NET_IP_ALIGN;
 258                         break;
 259                 }
 260                 rds_ring->rx_buf_arr = vzalloc(RCV_BUFF_RINGSIZE(rds_ring));
 261                 if (rds_ring->rx_buf_arr == NULL) {
 262                         dev_err(&netdev->dev, "Failed to allocate "
 263                                 "rx buffer ring %d\n", ring);
 264                         goto err_out;
 265                 }
 266                 INIT_LIST_HEAD(&rds_ring->free_list);
 267                 /*
 268                  * Now go through all of them, set reference handles
 269                  * and put them in the queues.
 270                  */
 271                 rx_buf = rds_ring->rx_buf_arr;
 272                 for (i = 0; i < rds_ring->num_desc; i++) {
 273                         list_add_tail(&rx_buf->list,
 274                                         &rds_ring->free_list);
 275                         rx_buf->ref_handle = i;
 276                         rx_buf++;
 277                 }
 278                 spin_lock_init(&rds_ring->lock);
 279         }
 280
 281         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 282                 sds_ring = &recv_ctx->sds_rings[ring];
 283                 sds_ring->irq = adapter->msix_entries[ring].vector;
 284                 sds_ring->adapter = adapter;
 285                 sds_ring->num_desc = adapter->num_rxd;
 286
 287                 for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
 288                         INIT_LIST_HEAD(&sds_ring->free_list[i]);
 289         }
 290
 291         return 0;
 292
 293 err_out:
 294         qlcnic_free_sw_resources(adapter);
 295         return -ENOMEM;
 296 }
 297
 298 /*
 299  * Utility to translate from internal Phantom CRB address
 300  * to external PCI CRB address.
 301  */
 302 static u32 qlcnic_decode_crb_addr(u32 addr)
 303 {
 304         int i;
 305         u32 base_addr, offset, pci_base;
 306
 307         crb_addr_transform_setup();
 308
 309         pci_base = QLCNIC_ADDR_ERROR;
 310         base_addr = addr & 0xfff00000;
 311         offset = addr & 0x000fffff;
 312
 313         for (i = 0; i < QLCNIC_MAX_CRB_XFORM; i++) {
 314                 if (crb_addr_xform[i] == base_addr) {
 315                         pci_base = i << 20;
 316                         break;
 317                 }
 318         }
 319         if (pci_base == QLCNIC_ADDR_ERROR)
 320                 return pci_base;
 321         else
 322                 return pci_base + offset;
 323 }
 324
 325 #define QLCNIC_MAX_ROM_WAIT_USEC        100
 326
 327 static int qlcnic_wait_rom_done(struct qlcnic_adapter *adapter)
 328 {
 329         long timeout = 0;
 330         long done = 0;
 331
 332         cond_resched();
 333
 334         while (done == 0) {
 335                 done = QLCRD32(adapter, QLCNIC_ROMUSB_GLB_STATUS);
 336                 done &= 2;
 337                 if (++timeout >= QLCNIC_MAX_ROM_WAIT_USEC) {
 338                         dev_err(&adapter->pdev->dev,
 339                                 "Timeout reached  waiting for rom done");
 340                         return -EIO;
 341                 }
 342                 udelay(1);
 343         }
 344         return 0;
 345 }
 346
 347 static int do_rom_fast_read(struct qlcnic_adapter *adapter,
 348                             u32 addr, u32 *valp)
 349 {
 350         QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ADDRESS, addr);
 351         QLCWR32(adapter, QLCNIC_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 352         QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ABYTE_CNT, 3);
 353         QLCWR32(adapter, QLCNIC_ROMUSB_ROM_INSTR_OPCODE, 0xb);
 354         if (qlcnic_wait_rom_done(adapter)) {
 355                 dev_err(&adapter->pdev->dev, "Error waiting for rom done\n");
 356                 return -EIO;
 357         }
 358         /* reset abyte_cnt and dummy_byte_cnt */
 359         QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ABYTE_CNT, 0);
 360         udelay(10);
 361         QLCWR32(adapter, QLCNIC_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 362
 363         *valp = QLCRD32(adapter, QLCNIC_ROMUSB_ROM_RDATA);
 364         return 0;
 365 }
 366
 367 static int do_rom_fast_read_words(struct qlcnic_adapter *adapter, int addr,
 368                                   u8 *bytes, size_t size)
 369 {
 370         int addridx;
 371         int ret = 0;
 372
 373         for (addridx = addr; addridx < (addr + size); addridx += 4) {
 374                 int v;
 375                 ret = do_rom_fast_read(adapter, addridx, &v);
 376                 if (ret != 0)
 377                         break;
 378                 *(__le32 *)bytes = cpu_to_le32(v);
 379                 bytes += 4;
 380         }
 381
 382         return ret;
 383 }
 384
 385 int
 386 qlcnic_rom_fast_read_words(struct qlcnic_adapter *adapter, int addr,
 387                                 u8 *bytes, size_t size)
 388 {
 389         int ret;
 390
 391         ret = qlcnic_rom_lock(adapter);
 392         if (ret < 0)
 393                 return ret;
 394
 395         ret = do_rom_fast_read_words(adapter, addr, bytes, size);
 396
 397         qlcnic_rom_unlock(adapter);
 398         return ret;
 399 }
 400
 401 int qlcnic_rom_fast_read(struct qlcnic_adapter *adapter, u32 addr, u32 *valp)
 402 {
 403         int ret;
 404
 405         if (qlcnic_rom_lock(adapter) != 0)
 406                 return -EIO;
 407
 408         ret = do_rom_fast_read(adapter, addr, valp);
 409         qlcnic_rom_unlock(adapter);
 410         return ret;
 411 }
 412
 413 int qlcnic_pinit_from_rom(struct qlcnic_adapter *adapter)
 414 {
 415         int addr, val;
 416         int i, n, init_delay;
 417         struct crb_addr_pair *buf;
 418         unsigned offset;
 419         u32 off;
 420         struct pci_dev *pdev = adapter->pdev;
 421
 422         QLCWR32(adapter, CRB_CMDPEG_STATE, 0);
 423         QLCWR32(adapter, CRB_RCVPEG_STATE, 0);
 424
 425         qlcnic_rom_lock(adapter);
 426         QLCWR32(adapter, QLCNIC_ROMUSB_GLB_SW_RESET, 0xfeffffff);
 427         qlcnic_rom_unlock(adapter);
 428
 429         /* Init HW CRB block */
 430         if (qlcnic_rom_fast_read(adapter, 0, &n) != 0 || (n != 0xcafecafe) ||
 431                         qlcnic_rom_fast_read(adapter, 4, &n) != 0) {
 432                 dev_err(&pdev->dev, "ERROR Reading crb_init area: val:%x\n", n);
 433                 return -EIO;
 434         }
 435         offset = n & 0xffffU;
 436         n = (n >> 16) & 0xffffU;
 437
 438         if (n >= 1024) {
 439                 dev_err(&pdev->dev, "QLOGIC card flash not initialized.\n");
 440                 return -EIO;
 441         }
 442
 443         buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
 444         if (buf == NULL) {
 445                 dev_err(&pdev->dev, "Unable to calloc memory for rom read.\n");
 446                 return -ENOMEM;
 447         }
 448
 449         for (i = 0; i < n; i++) {
 450                 if (qlcnic_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
 451                 qlcnic_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
 452                         kfree(buf);
 453                         return -EIO;
 454                 }
 455
 456                 buf[i].addr = addr;
 457                 buf[i].data = val;
 458         }
 459
 460         for (i = 0; i < n; i++) {
 461
 462                 off = qlcnic_decode_crb_addr(buf[i].addr);
 463                 if (off == QLCNIC_ADDR_ERROR) {
 464                         dev_err(&pdev->dev, "CRB init value out of range %x\n",
 465                                         buf[i].addr);
 466                         continue;
 467                 }
 468                 off += QLCNIC_PCI_CRBSPACE;
 469
 470                 if (off & 1)
 471                         continue;
 472
 473                 /* skipping cold reboot MAGIC */
 474                 if (off == QLCNIC_CAM_RAM(0x1fc))
 475                         continue;
 476                 if (off == (QLCNIC_CRB_I2C0 + 0x1c))
 477                         continue;
 478                 if (off == (ROMUSB_GLB + 0xbc)) /* do not reset PCI */
 479                         continue;
 480                 if (off == (ROMUSB_GLB + 0xa8))
 481                         continue;
 482                 if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
 483                         continue;
 484                 if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
 485                         continue;
 486                 if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
 487                         continue;
 488                 if ((off & 0x0ff00000) == QLCNIC_CRB_DDR_NET)
 489                         continue;
 490                 /* skip the function enable register */
 491                 if (off == QLCNIC_PCIE_REG(PCIE_SETUP_FUNCTION))
 492                         continue;
 493                 if (off == QLCNIC_PCIE_REG(PCIE_SETUP_FUNCTION2))
 494                         continue;
 495                 if ((off & 0x0ff00000) == QLCNIC_CRB_SMB)
 496                         continue;
 497
 498                 init_delay = 1;
 499                 /* After writing this register, HW needs time for CRB */
 500                 /* to quiet down (else crb_window returns 0xffffffff) */
 501                 if (off == QLCNIC_ROMUSB_GLB_SW_RESET)
 502                         init_delay = 1000;
 503
 504                 QLCWR32(adapter, off, buf[i].data);
 505
 506                 msleep(init_delay);
 507         }
 508         kfree(buf);
 509
 510         /* Initialize protocol process engine */
 511         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_D + 0xec, 0x1e);
 512         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_D + 0x4c, 8);
 513         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_I + 0x4c, 8);
 514         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0x8, 0);
 515         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0xc, 0);
 516         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_1 + 0x8, 0);
 517         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_1 + 0xc, 0);
 518         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_2 + 0x8, 0);
 519         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_2 + 0xc, 0);
 520         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_3 + 0x8, 0);
 521         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_3 + 0xc, 0);
 522         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_4 + 0x8, 0);
 523         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_4 + 0xc, 0);
 524         msleep(1);
 525         QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS1, 0);
 526         QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS2, 0);
 527         return 0;
 528 }
 529
 530 static int qlcnic_cmd_peg_ready(struct qlcnic_adapter *adapter)
 531 {
 532         u32 val;
 533         int retries = QLCNIC_CMDPEG_CHECK_RETRY_COUNT;
 534
 535         do {
 536                 val = QLCRD32(adapter, CRB_CMDPEG_STATE);
 537
 538                 switch (val) {
 539                 case PHAN_INITIALIZE_COMPLETE:
 540                 case PHAN_INITIALIZE_ACK:
 541                         return 0;
 542                 case PHAN_INITIALIZE_FAILED:
 543                         goto out_err;
 544                 default:
 545                         break;
 546                 }
 547
 548                 msleep(QLCNIC_CMDPEG_CHECK_DELAY);
 549
 550         } while (--retries);
 551
 552         QLCWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
 553
 554 out_err:
 555         dev_err(&adapter->pdev->dev, "Command Peg initialization not "
 556                       "complete, state: 0x%x.\n", val);
 557         return -EIO;
 558 }
 559
 560 static int
 561 qlcnic_receive_peg_ready(struct qlcnic_adapter *adapter)
 562 {
 563         u32 val;
 564         int retries = QLCNIC_RCVPEG_CHECK_RETRY_COUNT;
 565
 566         do {
 567                 val = QLCRD32(adapter, CRB_RCVPEG_STATE);
 568
 569                 if (val == PHAN_PEG_RCV_INITIALIZED)
 570                         return 0;
 571
 572                 msleep(QLCNIC_RCVPEG_CHECK_DELAY);
 573
 574         } while (--retries);
 575
 576         if (!retries) {
 577                 dev_err(&adapter->pdev->dev, "Receive Peg initialization not "
 578                               "complete, state: 0x%x.\n", val);
 579                 return -EIO;
 580         }
 581
 582         return 0;
 583 }
 584
 585 int
 586 qlcnic_check_fw_status(struct qlcnic_adapter *adapter)
 587 {
 588         int err;
 589
 590         err = qlcnic_cmd_peg_ready(adapter);
 591         if (err)
 592                 return err;
 593
 594         err = qlcnic_receive_peg_ready(adapter);
 595         if (err)
 596                 return err;
 597
 598         QLCWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
 599
 600         return err;
 601 }
 602
 603 int
 604 qlcnic_setup_idc_param(struct qlcnic_adapter *adapter) {
 605
 606         int timeo;
 607         u32 val;
 608
 609         val = QLCRD32(adapter, QLCNIC_CRB_DEV_PARTITION_INFO);
 610         val = QLC_DEV_GET_DRV(val, adapter->portnum);
 611         if ((val & 0x3) != QLCNIC_TYPE_NIC) {
 612                 dev_err(&adapter->pdev->dev,
 613                         "Not an Ethernet NIC func=%u\n", val);
 614                 return -EIO;
 615         }
 616         adapter->physical_port = (val >> 2);
 617         if (qlcnic_rom_fast_read(adapter, QLCNIC_ROM_DEV_INIT_TIMEOUT, &timeo))
 618                 timeo = QLCNIC_INIT_TIMEOUT_SECS;
 619
 620         adapter->dev_init_timeo = timeo;
 621
 622         if (qlcnic_rom_fast_read(adapter, QLCNIC_ROM_DRV_RESET_TIMEOUT, &timeo))
 623                 timeo = QLCNIC_RESET_TIMEOUT_SECS;
 624
 625         adapter->reset_ack_timeo = timeo;
 626
 627         return 0;
 628 }
 629
 630 static int qlcnic_get_flt_entry(struct qlcnic_adapter *adapter, u8 region,
 631                                 struct qlcnic_flt_entry *region_entry)
 632 {
 633         struct qlcnic_flt_header flt_hdr;
 634         struct qlcnic_flt_entry *flt_entry;
 635         int i = 0, ret;
 636         u32 entry_size;
 637
 638         memset(region_entry, 0, sizeof(struct qlcnic_flt_entry));
 639         ret = qlcnic_rom_fast_read_words(adapter, QLCNIC_FLT_LOCATION,
 640                                          (u8 *)&flt_hdr,
 641                                          sizeof(struct qlcnic_flt_header));
 642         if (ret) {
 643                 dev_warn(&adapter->pdev->dev,
 644                          "error reading flash layout header\n");
 645                 return -EIO;
 646         }
 647
 648         entry_size = flt_hdr.len - sizeof(struct qlcnic_flt_header);
 649         flt_entry = (struct qlcnic_flt_entry *)vzalloc(entry_size);
 650         if (flt_entry == NULL) {
 651                 dev_warn(&adapter->pdev->dev, "error allocating memory\n");
 652                 return -EIO;
 653         }
 654
 655         ret = qlcnic_rom_fast_read_words(adapter, QLCNIC_FLT_LOCATION +
 656                                          sizeof(struct qlcnic_flt_header),
 657                                          (u8 *)flt_entry, entry_size);
 658         if (ret) {
 659                 dev_warn(&adapter->pdev->dev,
 660                          "error reading flash layout entries\n");
 661                 goto err_out;
 662         }
 663
 664         while (i < (entry_size/sizeof(struct qlcnic_flt_entry))) {
 665                 if (flt_entry[i].region == region)
 666                         break;
 667                 i++;
 668         }
 669         if (i >= (entry_size/sizeof(struct qlcnic_flt_entry))) {
 670                 dev_warn(&adapter->pdev->dev,
 671                          "region=%x not found in %d regions\n", region, i);
 672                 ret = -EIO;
 673                 goto err_out;
 674         }
 675         memcpy(region_entry, &flt_entry[i], sizeof(struct qlcnic_flt_entry));
 676
 677 err_out:
 678         vfree(flt_entry);
 679         return ret;
 680 }
 681
 682 int
 683 qlcnic_check_flash_fw_ver(struct qlcnic_adapter *adapter)
 684 {
 685         struct qlcnic_flt_entry fw_entry;
 686         u32 ver = -1, min_ver;
 687         int ret;
 688
 689         if (adapter->ahw->revision_id == QLCNIC_P3P_C0)
 690                 ret = qlcnic_get_flt_entry(adapter, QLCNIC_C0_FW_IMAGE_REGION,
 691                                                  &fw_entry);
 692         else
 693                 ret = qlcnic_get_flt_entry(adapter, QLCNIC_B0_FW_IMAGE_REGION,
 694                                                  &fw_entry);
 695
 696         if (!ret)
 697                 /* 0-4:-signature,  4-8:-fw version */
 698                 qlcnic_rom_fast_read(adapter, fw_entry.start_addr + 4,
 699                                      (int *)&ver);
 700         else
 701                 qlcnic_rom_fast_read(adapter, QLCNIC_FW_VERSION_OFFSET,
 702                                      (int *)&ver);
 703
 704         ver = QLCNIC_DECODE_VERSION(ver);
 705         min_ver = QLCNIC_MIN_FW_VERSION;
 706
 707         if (ver < min_ver) {
 708                 dev_err(&adapter->pdev->dev,
 709                         "firmware version %d.%d.%d unsupported."
 710                         "Min supported version %d.%d.%d\n",
 711                         _major(ver), _minor(ver), _build(ver),
 712                         _major(min_ver), _minor(min_ver), _build(min_ver));
 713                 return -EINVAL;
 714         }
 715
 716         return 0;
 717 }
 718
 719 static int
 720 qlcnic_has_mn(struct qlcnic_adapter *adapter)
 721 {
 722         u32 capability;
 723         capability = 0;
 724
 725         capability = QLCRD32(adapter, QLCNIC_PEG_TUNE_CAPABILITY);
 726         if (capability & QLCNIC_PEG_TUNE_MN_PRESENT)
 727                 return 1;
 728
 729         return 0;
 730 }
 731
 732 static
 733 struct uni_table_desc *qlcnic_get_table_desc(const u8 *unirom, int section)
 734 {
 735         u32 i;
 736         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 737         __le32 entries = cpu_to_le32(directory->num_entries);
 738
 739         for (i = 0; i < entries; i++) {
 740
 741                 __le32 offs = cpu_to_le32(directory->findex) +
 742                                 (i * cpu_to_le32(directory->entry_size));
 743                 __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
 744
 745                 if (tab_type == section)
 746                         return (struct uni_table_desc *) &unirom[offs];
 747         }
 748
 749         return NULL;
 750 }
 751
 752 #define FILEHEADER_SIZE (14 * 4)
 753
 754 static int
 755 qlcnic_validate_header(struct qlcnic_adapter *adapter)
 756 {
 757         const u8 *unirom = adapter->fw->data;
 758         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 759         __le32 fw_file_size = adapter->fw->size;
 760         __le32 entries;
 761         __le32 entry_size;
 762         __le32 tab_size;
 763
 764         if (fw_file_size < FILEHEADER_SIZE)
 765                 return -EINVAL;
 766
 767         entries = cpu_to_le32(directory->num_entries);
 768         entry_size = cpu_to_le32(directory->entry_size);
 769         tab_size = cpu_to_le32(directory->findex) + (entries * entry_size);
 770
 771         if (fw_file_size < tab_size)
 772                 return -EINVAL;
 773
 774         return 0;
 775 }
 776
 777 static int
 778 qlcnic_validate_bootld(struct qlcnic_adapter *adapter)
 779 {
 780         struct uni_table_desc *tab_desc;
 781         struct uni_data_desc *descr;
 782         const u8 *unirom = adapter->fw->data;
 783         int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 784                                 QLCNIC_UNI_BOOTLD_IDX_OFF));
 785         __le32 offs;
 786         __le32 tab_size;
 787         __le32 data_size;
 788
 789         tab_desc = qlcnic_get_table_desc(unirom, QLCNIC_UNI_DIR_SECT_BOOTLD);
 790
 791         if (!tab_desc)
 792                 return -EINVAL;
 793
 794         tab_size = cpu_to_le32(tab_desc->findex) +
 795                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 796
 797         if (adapter->fw->size < tab_size)
 798                 return -EINVAL;
 799
 800         offs = cpu_to_le32(tab_desc->findex) +
 801                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 802         descr = (struct uni_data_desc *)&unirom[offs];
 803
 804         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 805
 806         if (adapter->fw->size < data_size)
 807                 return -EINVAL;
 808
 809         return 0;
 810 }
 811
 812 static int
 813 qlcnic_validate_fw(struct qlcnic_adapter *adapter)
 814 {
 815         struct uni_table_desc *tab_desc;
 816         struct uni_data_desc *descr;
 817         const u8 *unirom = adapter->fw->data;
 818         int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 819                                 QLCNIC_UNI_FIRMWARE_IDX_OFF));
 820         __le32 offs;
 821         __le32 tab_size;
 822         __le32 data_size;
 823
 824         tab_desc = qlcnic_get_table_desc(unirom, QLCNIC_UNI_DIR_SECT_FW);
 825
 826         if (!tab_desc)
 827                 return -EINVAL;
 828
 829         tab_size = cpu_to_le32(tab_desc->findex) +
 830                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 831
 832         if (adapter->fw->size < tab_size)
 833                 return -EINVAL;
 834
 835         offs = cpu_to_le32(tab_desc->findex) +
 836                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 837         descr = (struct uni_data_desc *)&unirom[offs];
 838         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 839
 840         if (adapter->fw->size < data_size)
 841                 return -EINVAL;
 842
 843         return 0;
 844 }
 845
 846 static int
 847 qlcnic_validate_product_offs(struct qlcnic_adapter *adapter)
 848 {
 849         struct uni_table_desc *ptab_descr;
 850         const u8 *unirom = adapter->fw->data;
 851         int mn_present = qlcnic_has_mn(adapter);
 852         __le32 entries;
 853         __le32 entry_size;
 854         __le32 tab_size;
 855         u32 i;
 856
 857         ptab_descr = qlcnic_get_table_desc(unirom,
 858                                 QLCNIC_UNI_DIR_SECT_PRODUCT_TBL);
 859         if (!ptab_descr)
 860                 return -EINVAL;
 861
 862         entries = cpu_to_le32(ptab_descr->num_entries);
 863         entry_size = cpu_to_le32(ptab_descr->entry_size);
 864         tab_size = cpu_to_le32(ptab_descr->findex) + (entries * entry_size);
 865
 866         if (adapter->fw->size < tab_size)
 867                 return -EINVAL;
 868
 869 nomn:
 870         for (i = 0; i < entries; i++) {
 871
 872                 __le32 flags, file_chiprev, offs;
 873                 u8 chiprev = adapter->ahw->revision_id;
 874                 u32 flagbit;
 875
 876                 offs = cpu_to_le32(ptab_descr->findex) +
 877                                 (i * cpu_to_le32(ptab_descr->entry_size));
 878                 flags = cpu_to_le32(*((int *)&unirom[offs] +
 879                                                 QLCNIC_UNI_FLAGS_OFF));
 880                 file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
 881                                                 QLCNIC_UNI_CHIP_REV_OFF));
 882
 883                 flagbit = mn_present ? 1 : 2;
 884
 885                 if ((chiprev == file_chiprev) &&
 886                                         ((1ULL << flagbit) & flags)) {
 887                         adapter->file_prd_off = offs;
 888                         return 0;
 889                 }
 890         }
 891         if (mn_present) {
 892                 mn_present = 0;
 893                 goto nomn;
 894         }
 895         return -EINVAL;
 896 }
 897
 898 static int
 899 qlcnic_validate_unified_romimage(struct qlcnic_adapter *adapter)
 900 {
 901         if (qlcnic_validate_header(adapter)) {
 902                 dev_err(&adapter->pdev->dev,
 903                                 "unified image: header validation failed\n");
 904                 return -EINVAL;
 905         }
 906
 907         if (qlcnic_validate_product_offs(adapter)) {
 908                 dev_err(&adapter->pdev->dev,
 909                                 "unified image: product validation failed\n");
 910                 return -EINVAL;
 911         }
 912
 913         if (qlcnic_validate_bootld(adapter)) {
 914                 dev_err(&adapter->pdev->dev,
 915                                 "unified image: bootld validation failed\n");
 916                 return -EINVAL;
 917         }
 918
 919         if (qlcnic_validate_fw(adapter)) {
 920                 dev_err(&adapter->pdev->dev,
 921                                 "unified image: firmware validation failed\n");
 922                 return -EINVAL;
 923         }
 924
 925         return 0;
 926 }
 927
 928 static
 929 struct uni_data_desc *qlcnic_get_data_desc(struct qlcnic_adapter *adapter,
 930                         u32 section, u32 idx_offset)
 931 {
 932         const u8 *unirom = adapter->fw->data;
 933         int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 934                                                                 idx_offset));
 935         struct uni_table_desc *tab_desc;
 936         __le32 offs;
 937
 938         tab_desc = qlcnic_get_table_desc(unirom, section);
 939
 940         if (tab_desc == NULL)
 941                 return NULL;
 942
 943         offs = cpu_to_le32(tab_desc->findex) +
 944                         (cpu_to_le32(tab_desc->entry_size) * idx);
 945
 946         return (struct uni_data_desc *)&unirom[offs];
 947 }
 948
 949 static u8 *
 950 qlcnic_get_bootld_offs(struct qlcnic_adapter *adapter)
 951 {
 952         u32 offs = QLCNIC_BOOTLD_START;
 953
 954         if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
 955                 offs = cpu_to_le32((qlcnic_get_data_desc(adapter,
 956                                         QLCNIC_UNI_DIR_SECT_BOOTLD,
 957                                         QLCNIC_UNI_BOOTLD_IDX_OFF))->findex);
 958
 959         return (u8 *)&adapter->fw->data[offs];
 960 }
 961
 962 static u8 *
 963 qlcnic_get_fw_offs(struct qlcnic_adapter *adapter)
 964 {
 965         u32 offs = QLCNIC_IMAGE_START;
 966
 967         if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
 968                 offs = cpu_to_le32((qlcnic_get_data_desc(adapter,
 969                                         QLCNIC_UNI_DIR_SECT_FW,
 970                                         QLCNIC_UNI_FIRMWARE_IDX_OFF))->findex);
 971
 972         return (u8 *)&adapter->fw->data[offs];
 973 }
 974
 975 static __le32
 976 qlcnic_get_fw_size(struct qlcnic_adapter *adapter)
 977 {
 978         if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
 979                 return cpu_to_le32((qlcnic_get_data_desc(adapter,
 980                                         QLCNIC_UNI_DIR_SECT_FW,
 981                                         QLCNIC_UNI_FIRMWARE_IDX_OFF))->size);
 982         else
 983                 return cpu_to_le32(
 984                         *(u32 *)&adapter->fw->data[QLCNIC_FW_SIZE_OFFSET]);
 985 }
 986
 987 static __le32
 988 qlcnic_get_fw_version(struct qlcnic_adapter *adapter)
 989 {
 990         struct uni_data_desc *fw_data_desc;
 991         const struct firmware *fw = adapter->fw;
 992         __le32 major, minor, sub;
 993         const u8 *ver_str;
 994         int i, ret;
 995
 996         if (adapter->fw_type != QLCNIC_UNIFIED_ROMIMAGE)
 997                 return cpu_to_le32(*(u32 *)&fw->data[QLCNIC_FW_VERSION_OFFSET]);
 998
 999         fw_data_desc = qlcnic_get_data_desc(adapter, QLCNIC_UNI_DIR_SECT_FW,
1000                         QLCNIC_UNI_FIRMWARE_IDX_OFF);
1001         ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
1002                 cpu_to_le32(fw_data_desc->size) - 17;
1003
1004         for (i = 0; i < 12; i++) {
1005                 if (!strncmp(&ver_str[i], "REV=", 4)) {
1006                         ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
1007                                         &major, &minor, &sub);
1008                         if (ret != 3)
1009                                 return 0;
1010                         else
1011                                 return major + (minor << 8) + (sub << 16);
1012                 }
1013         }
1014
1015         return 0;
1016 }
1017
1018 static __le32
1019 qlcnic_get_bios_version(struct qlcnic_adapter *adapter)
1020 {
1021         const struct firmware *fw = adapter->fw;
1022         __le32 bios_ver, prd_off = adapter->file_prd_off;
1023
1024         if (adapter->fw_type != QLCNIC_UNIFIED_ROMIMAGE)
1025                 return cpu_to_le32(
1026                         *(u32 *)&fw->data[QLCNIC_BIOS_VERSION_OFFSET]);
1027
1028         bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
1029                                 + QLCNIC_UNI_BIOS_VERSION_OFF));
1030
1031         return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) + (bios_ver >> 24);
1032 }
1033
1034 static void qlcnic_rom_lock_recovery(struct qlcnic_adapter *adapter)
1035 {
1036         if (qlcnic_pcie_sem_lock(adapter, 2, QLCNIC_ROM_LOCK_ID))
1037                 dev_info(&adapter->pdev->dev, "Resetting rom_lock\n");
1038
1039         qlcnic_pcie_sem_unlock(adapter, 2);
1040 }
1041
1042 static int
1043 qlcnic_check_fw_hearbeat(struct qlcnic_adapter *adapter)
1044 {
1045         u32 heartbeat, ret = -EIO;
1046         int retries = QLCNIC_HEARTBEAT_CHECK_RETRY_COUNT;
1047
1048         adapter->heartbeat = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
1049
1050         do {
1051                 msleep(QLCNIC_HEARTBEAT_PERIOD_MSECS);
1052                 heartbeat = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
1053                 if (heartbeat != adapter->heartbeat) {
1054                         ret = QLCNIC_RCODE_SUCCESS;
1055                         break;
1056                 }
1057         } while (--retries);
1058
1059         return ret;
1060 }
1061
1062 int
1063 qlcnic_need_fw_reset(struct qlcnic_adapter *adapter)
1064 {
1065         if ((adapter->flags & QLCNIC_FW_HANG) ||
1066                         qlcnic_check_fw_hearbeat(adapter)) {
1067                 qlcnic_rom_lock_recovery(adapter);
1068                 return 1;
1069         }
1070
1071         if (adapter->need_fw_reset)
1072                 return 1;
1073
1074         if (adapter->fw)
1075                 return 1;
1076
1077         return 0;
1078 }
1079
1080 static const char *fw_name[] = {
1081         QLCNIC_UNIFIED_ROMIMAGE_NAME,
1082         QLCNIC_FLASH_ROMIMAGE_NAME,
1083 };
1084
1085 int
1086 qlcnic_load_firmware(struct qlcnic_adapter *adapter)
1087 {
1088         u64 *ptr64;
1089         u32 i, flashaddr, size;
1090         const struct firmware *fw = adapter->fw;
1091         struct pci_dev *pdev = adapter->pdev;
1092
1093         dev_info(&pdev->dev, "loading firmware from %s\n",
1094                         fw_name[adapter->fw_type]);
1095
1096         if (fw) {
1097                 __le64 data;
1098
1099                 size = (QLCNIC_IMAGE_START - QLCNIC_BOOTLD_START) / 8;
1100
1101                 ptr64 = (u64 *)qlcnic_get_bootld_offs(adapter);
1102                 flashaddr = QLCNIC_BOOTLD_START;
1103
1104                 for (i = 0; i < size; i++) {
1105                         data = cpu_to_le64(ptr64[i]);
1106
1107                         if (qlcnic_pci_mem_write_2M(adapter, flashaddr, data))
1108                                 return -EIO;
1109
1110                         flashaddr += 8;
1111                 }
1112
1113                 size = (__force u32)qlcnic_get_fw_size(adapter) / 8;
1114
1115                 ptr64 = (u64 *)qlcnic_get_fw_offs(adapter);
1116                 flashaddr = QLCNIC_IMAGE_START;
1117
1118                 for (i = 0; i < size; i++) {
1119                         data = cpu_to_le64(ptr64[i]);
1120
1121                         if (qlcnic_pci_mem_write_2M(adapter,
1122                                                 flashaddr, data))
1123                                 return -EIO;
1124
1125                         flashaddr += 8;
1126                 }
1127
1128                 size = (__force u32)qlcnic_get_fw_size(adapter) % 8;
1129                 if (size) {
1130                         data = cpu_to_le64(ptr64[i]);
1131
1132                         if (qlcnic_pci_mem_write_2M(adapter,
1133                                                 flashaddr, data))
1134                                 return -EIO;
1135                 }
1136
1137         } else {
1138                 u64 data;
1139                 u32 hi, lo;
1140                 int ret;
1141                 struct qlcnic_flt_entry bootld_entry;
1142
1143                 ret = qlcnic_get_flt_entry(adapter, QLCNIC_BOOTLD_REGION,
1144                                         &bootld_entry);
1145                 if (!ret) {
1146                         size = bootld_entry.size / 8;
1147                         flashaddr = bootld_entry.start_addr;
1148                 } else {
1149                         size = (QLCNIC_IMAGE_START - QLCNIC_BOOTLD_START) / 8;
1150                         flashaddr = QLCNIC_BOOTLD_START;
1151                         dev_info(&pdev->dev,
1152                                 "using legacy method to get flash fw region");
1153                 }
1154
1155                 for (i = 0; i < size; i++) {
1156                         if (qlcnic_rom_fast_read(adapter,
1157                                         flashaddr, (int *)&lo) != 0)
1158                                 return -EIO;
1159                         if (qlcnic_rom_fast_read(adapter,
1160                                         flashaddr + 4, (int *)&hi) != 0)
1161                                 return -EIO;
1162
1163                         data = (((u64)hi << 32) | lo);
1164
1165                         if (qlcnic_pci_mem_write_2M(adapter,
1166                                                 flashaddr, data))
1167                                 return -EIO;
1168
1169                         flashaddr += 8;
1170                 }
1171         }
1172         msleep(1);
1173
1174         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0x18, 0x1020);
1175         QLCWR32(adapter, QLCNIC_ROMUSB_GLB_SW_RESET, 0x80001e);
1176         return 0;
1177 }
1178
1179 static int
1180 qlcnic_validate_firmware(struct qlcnic_adapter *adapter)
1181 {
1182         __le32 val;
1183         u32 ver, bios, min_size;
1184         struct pci_dev *pdev = adapter->pdev;
1185         const struct firmware *fw = adapter->fw;
1186         u8 fw_type = adapter->fw_type;
1187
1188         if (fw_type == QLCNIC_UNIFIED_ROMIMAGE) {
1189                 if (qlcnic_validate_unified_romimage(adapter))
1190                         return -EINVAL;
1191
1192                 min_size = QLCNIC_UNI_FW_MIN_SIZE;
1193         } else {
1194                 val = cpu_to_le32(*(u32 *)&fw->data[QLCNIC_FW_MAGIC_OFFSET]);
1195                 if ((__force u32)val != QLCNIC_BDINFO_MAGIC)
1196                         return -EINVAL;
1197
1198                 min_size = QLCNIC_FW_MIN_SIZE;
1199         }
1200
1201         if (fw->size < min_size)
1202                 return -EINVAL;
1203
1204         val = qlcnic_get_fw_version(adapter);
1205         ver = QLCNIC_DECODE_VERSION(val);
1206
1207         if (ver < QLCNIC_MIN_FW_VERSION) {
1208                 dev_err(&pdev->dev,
1209                                 "%s: firmware version %d.%d.%d unsupported\n",
1210                 fw_name[fw_type], _major(ver), _minor(ver), _build(ver));
1211                 return -EINVAL;
1212         }
1213
1214         val = qlcnic_get_bios_version(adapter);
1215         qlcnic_rom_fast_read(adapter, QLCNIC_BIOS_VERSION_OFFSET, (int *)&bios);
1216         if ((__force u32)val != bios) {
1217                 dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
1218                                 fw_name[fw_type]);
1219                 return -EINVAL;
1220         }
1221
1222         QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
1223         return 0;
1224 }
1225
1226 static void
1227 qlcnic_get_next_fwtype(struct qlcnic_adapter *adapter)
1228 {
1229         u8 fw_type;
1230
1231         switch (adapter->fw_type) {
1232         case QLCNIC_UNKNOWN_ROMIMAGE:
1233                 fw_type = QLCNIC_UNIFIED_ROMIMAGE;
1234                 break;
1235
1236         case QLCNIC_UNIFIED_ROMIMAGE:
1237         default:
1238                 fw_type = QLCNIC_FLASH_ROMIMAGE;
1239                 break;
1240         }
1241
1242         adapter->fw_type = fw_type;
1243 }
1244
1245
1246
1247 void qlcnic_request_firmware(struct qlcnic_adapter *adapter)
1248 {
1249         struct pci_dev *pdev = adapter->pdev;
1250         int rc;
1251
1252         adapter->fw_type = QLCNIC_UNKNOWN_ROMIMAGE;
1253
1254 next:
1255         qlcnic_get_next_fwtype(adapter);
1256
1257         if (adapter->fw_type == QLCNIC_FLASH_ROMIMAGE) {
1258                 adapter->fw = NULL;
1259         } else {
1260                 rc = request_firmware(&adapter->fw,
1261                                 fw_name[adapter->fw_type], &pdev->dev);
1262                 if (rc != 0)
1263                         goto next;
1264
1265                 rc = qlcnic_validate_firmware(adapter);
1266                 if (rc != 0) {
1267                         release_firmware(adapter->fw);
1268                         msleep(1);
1269                         goto next;
1270                 }
1271         }
1272 }
1273
1274
1275 void
1276 qlcnic_release_firmware(struct qlcnic_adapter *adapter)
1277 {
1278         if (adapter->fw)
1279                 release_firmware(adapter->fw);
1280         adapter->fw = NULL;
1281 }
1282
1283 static void
1284 qlcnic_handle_linkevent(struct qlcnic_adapter *adapter,
1285                                 struct qlcnic_fw_msg *msg)
1286 {
1287         u32 cable_OUI;
1288         u16 cable_len;
1289         u16 link_speed;
1290         u8  link_status, module, duplex, autoneg;
1291         u8 lb_status = 0;
1292         struct net_device *netdev = adapter->netdev;
1293
1294         adapter->has_link_events = 1;
1295
1296         cable_OUI = msg->body[1] & 0xffffffff;
1297         cable_len = (msg->body[1] >> 32) & 0xffff;
1298         link_speed = (msg->body[1] >> 48) & 0xffff;
1299
1300         link_status = msg->body[2] & 0xff;
1301         duplex = (msg->body[2] >> 16) & 0xff;
1302         autoneg = (msg->body[2] >> 24) & 0xff;
1303         lb_status = (msg->body[2] >> 32) & 0x3;
1304
1305         module = (msg->body[2] >> 8) & 0xff;
1306         if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE)
1307                 dev_info(&netdev->dev, "unsupported cable: OUI 0x%x, "
1308                                 "length %d\n", cable_OUI, cable_len);
1309         else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN)
1310                 dev_info(&netdev->dev, "unsupported cable length %d\n",
1311                                 cable_len);
1312
1313         if (!link_status && (lb_status == QLCNIC_ILB_MODE ||
1314             lb_status == QLCNIC_ELB_MODE))
1315                 adapter->ahw->loopback_state |= QLCNIC_LINKEVENT;
1316
1317         qlcnic_advert_link_change(adapter, link_status);
1318
1319         if (duplex == LINKEVENT_FULL_DUPLEX)
1320                 adapter->link_duplex = DUPLEX_FULL;
1321         else
1322                 adapter->link_duplex = DUPLEX_HALF;
1323
1324         adapter->module_type = module;
1325         adapter->link_autoneg = autoneg;
1326         adapter->link_speed = link_speed;
1327 }
1328
1329 static void
1330 qlcnic_handle_fw_message(int desc_cnt, int index,
1331                 struct qlcnic_host_sds_ring *sds_ring)
1332 {
1333         struct qlcnic_fw_msg msg;
1334         struct status_desc *desc;
1335         struct qlcnic_adapter *adapter;
1336         struct device *dev;
1337         int i = 0, opcode, ret;
1338
1339         while (desc_cnt > 0 && i < 8) {
1340                 desc = &sds_ring->desc_head[index];
1341                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1342                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1343
1344                 index = get_next_index(index, sds_ring->num_desc);
1345                 desc_cnt--;
1346         }
1347
1348         adapter = sds_ring->adapter;
1349         dev = &adapter->pdev->dev;
1350         opcode = qlcnic_get_nic_msg_opcode(msg.body[0]);
1351
1352         switch (opcode) {
1353         case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1354                 qlcnic_handle_linkevent(adapter, &msg);
1355                 break;
1356         case QLCNIC_C2H_OPCODE_CONFIG_LOOPBACK:
1357                 ret = (u32)(msg.body[1]);
1358                 switch (ret) {
1359                 case 0:
1360                         adapter->ahw->loopback_state |= QLCNIC_LB_RESPONSE;
1361                         break;
1362                 case 1:
1363                         dev_info(dev, "loopback already in progress\n");
1364                         adapter->diag_cnt = -QLCNIC_TEST_IN_PROGRESS;
1365                         break;
1366                 case 2:
1367                         dev_info(dev, "loopback cable is not connected\n");
1368                         adapter->diag_cnt = -QLCNIC_LB_CABLE_NOT_CONN;
1369                         break;
1370                 default:
1371                         dev_info(dev, "loopback configure request failed,"
1372                                         " ret %x\n", ret);
1373                         adapter->diag_cnt = -QLCNIC_UNDEFINED_ERROR;
1374                         break;
1375                 }
1376                 break;
1377         default:
1378                 break;
1379         }
1380 }
1381
1382 static int
1383 qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter,
1384                 struct qlcnic_host_rds_ring *rds_ring,
1385                 struct qlcnic_rx_buffer *buffer)
1386 {
1387         struct sk_buff *skb;
1388         dma_addr_t dma;
1389         struct pci_dev *pdev = adapter->pdev;
1390
1391         skb = dev_alloc_skb(rds_ring->skb_size);
1392         if (!skb) {
1393                 adapter->stats.skb_alloc_failure++;
1394                 return -ENOMEM;
1395         }
1396
1397         skb_reserve(skb, NET_IP_ALIGN);
1398
1399         dma = pci_map_single(pdev, skb->data,
1400                         rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1401
1402         if (pci_dma_mapping_error(pdev, dma)) {
1403                 adapter->stats.rx_dma_map_error++;
1404                 dev_kfree_skb_any(skb);
1405                 return -ENOMEM;
1406         }
1407
1408         buffer->skb = skb;
1409         buffer->dma = dma;
1410
1411         return 0;
1412 }
1413
1414 static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter,
1415                 struct qlcnic_host_rds_ring *rds_ring, u16 index, u16 cksum)
1416 {
1417         struct qlcnic_rx_buffer *buffer;
1418         struct sk_buff *skb;
1419
1420         buffer = &rds_ring->rx_buf_arr[index];
1421
1422         if (unlikely(buffer->skb == NULL)) {
1423                 WARN_ON(1);
1424                 return NULL;
1425         }
1426
1427         pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
1428                         PCI_DMA_FROMDEVICE);
1429
1430         skb = buffer->skb;
1431
1432         if (likely((adapter->netdev->features & NETIF_F_RXCSUM) &&
1433             (cksum == STATUS_CKSUM_OK || cksum == STATUS_CKSUM_LOOP))) {
1434                 adapter->stats.csummed++;
1435                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1436         } else {
1437                 skb_checksum_none_assert(skb);
1438         }
1439
1440         skb->dev = adapter->netdev;
1441
1442         buffer->skb = NULL;
1443
1444         return skb;
1445 }
1446
1447 static inline int
1448 qlcnic_check_rx_tagging(struct qlcnic_adapter *adapter, struct sk_buff *skb,
1449                         u16 *vlan_tag)
1450 {
1451         struct ethhdr *eth_hdr;
1452
1453         if (!__vlan_get_tag(skb, vlan_tag)) {
1454                 eth_hdr = (struct ethhdr *) skb->data;
1455                 memmove(skb->data + VLAN_HLEN, eth_hdr, ETH_ALEN * 2);
1456                 skb_pull(skb, VLAN_HLEN);
1457         }
1458         if (!adapter->pvid)
1459                 return 0;
1460
1461         if (*vlan_tag == adapter->pvid) {
1462                 /* Outer vlan tag. Packet should follow non-vlan path */
1463                 *vlan_tag = 0xffff;
1464                 return 0;
1465         }
1466         if (adapter->flags & QLCNIC_TAGGING_ENABLED)
1467                 return 0;
1468
1469         return -EINVAL;
1470 }
1471
1472 static struct qlcnic_rx_buffer *
1473 qlcnic_process_rcv(struct qlcnic_adapter *adapter,
1474                 struct qlcnic_host_sds_ring *sds_ring,
1475                 int ring, u64 sts_data0)
1476 {
1477         struct net_device *netdev = adapter->netdev;
1478         struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1479         struct qlcnic_rx_buffer *buffer;
1480         struct sk_buff *skb;
1481         struct qlcnic_host_rds_ring *rds_ring;
1482         int index, length, cksum, pkt_offset;
1483         u16 vid = 0xffff;
1484
1485         if (unlikely(ring >= adapter->max_rds_rings))
1486                 return NULL;
1487
1488         rds_ring = &recv_ctx->rds_rings[ring];
1489
1490         index = qlcnic_get_sts_refhandle(sts_data0);
1491         if (unlikely(index >= rds_ring->num_desc))
1492                 return NULL;
1493
1494         buffer = &rds_ring->rx_buf_arr[index];
1495
1496         length = qlcnic_get_sts_totallength(sts_data0);
1497         cksum  = qlcnic_get_sts_status(sts_data0);
1498         pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1499
1500         skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1501         if (!skb)
1502                 return buffer;
1503
1504         if (length > rds_ring->skb_size)
1505                 skb_put(skb, rds_ring->skb_size);
1506         else
1507                 skb_put(skb, length);
1508
1509         if (pkt_offset)
1510                 skb_pull(skb, pkt_offset);
1511
1512         if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
1513                 adapter->stats.rxdropped++;
1514                 dev_kfree_skb(skb);
1515                 return buffer;
1516         }
1517
1518         skb->protocol = eth_type_trans(skb, netdev);
1519
1520         if (vid != 0xffff)
1521                 __vlan_hwaccel_put_tag(skb, vid);
1522
1523         napi_gro_receive(&sds_ring->napi, skb);
1524
1525         adapter->stats.rx_pkts++;
1526         adapter->stats.rxbytes += length;
1527
1528         return buffer;
1529 }
1530
1531 #define QLC_TCP_HDR_SIZE            20
1532 #define QLC_TCP_TS_OPTION_SIZE      12
1533 #define QLC_TCP_TS_HDR_SIZE         (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE)
1534
1535 static struct qlcnic_rx_buffer *
1536 qlcnic_process_lro(struct qlcnic_adapter *adapter,
1537                 struct qlcnic_host_sds_ring *sds_ring,
1538                 int ring, u64 sts_data0, u64 sts_data1)
1539 {
1540         struct net_device *netdev = adapter->netdev;
1541         struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1542         struct qlcnic_rx_buffer *buffer;
1543         struct sk_buff *skb;
1544         struct qlcnic_host_rds_ring *rds_ring;
1545         struct iphdr *iph;
1546         struct tcphdr *th;
1547         bool push, timestamp;
1548         int l2_hdr_offset, l4_hdr_offset;
1549         int index;
1550         u16 lro_length, length, data_offset;
1551         u32 seq_number;
1552         u16 vid = 0xffff;
1553
1554         if (unlikely(ring > adapter->max_rds_rings))
1555                 return NULL;
1556
1557         rds_ring = &recv_ctx->rds_rings[ring];
1558
1559         index = qlcnic_get_lro_sts_refhandle(sts_data0);
1560         if (unlikely(index > rds_ring->num_desc))
1561                 return NULL;
1562
1563         buffer = &rds_ring->rx_buf_arr[index];
1564
1565         timestamp = qlcnic_get_lro_sts_timestamp(sts_data0);
1566         lro_length = qlcnic_get_lro_sts_length(sts_data0);
1567         l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0);
1568         l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0);
1569         push = qlcnic_get_lro_sts_push_flag(sts_data0);
1570         seq_number = qlcnic_get_lro_sts_seq_number(sts_data1);
1571
1572         skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1573         if (!skb)
1574                 return buffer;
1575
1576         if (timestamp)
1577                 data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE;
1578         else
1579                 data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE;
1580
1581         skb_put(skb, lro_length + data_offset);
1582
1583         skb_pull(skb, l2_hdr_offset);
1584
1585         if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
1586                 adapter->stats.rxdropped++;
1587                 dev_kfree_skb(skb);
1588                 return buffer;
1589         }
1590
1591         skb->protocol = eth_type_trans(skb, netdev);
1592
1593         iph = (struct iphdr *)skb->data;
1594         th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
1595
1596         length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1597         iph->tot_len = htons(length);
1598         iph->check = 0;
1599         iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
1600         th->psh = push;
1601         th->seq = htonl(seq_number);
1602
1603         length = skb->len;
1604
1605         if (vid != 0xffff)
1606                 __vlan_hwaccel_put_tag(skb, vid);
1607         netif_receive_skb(skb);
1608
1609         adapter->stats.lro_pkts++;
1610         adapter->stats.lrobytes += length;
1611
1612         return buffer;
1613 }
1614
1615 int
1616 qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max)
1617 {
1618         struct qlcnic_adapter *adapter = sds_ring->adapter;
1619         struct list_head *cur;
1620         struct status_desc *desc;
1621         struct qlcnic_rx_buffer *rxbuf;
1622         u64 sts_data0, sts_data1;
1623
1624         int count = 0;
1625         int opcode, ring, desc_cnt;
1626         u32 consumer = sds_ring->consumer;
1627
1628         while (count < max) {
1629                 desc = &sds_ring->desc_head[consumer];
1630                 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1631
1632                 if (!(sts_data0 & STATUS_OWNER_HOST))
1633                         break;
1634
1635                 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1636                 opcode = qlcnic_get_sts_opcode(sts_data0);
1637
1638                 switch (opcode) {
1639                 case QLCNIC_RXPKT_DESC:
1640                 case QLCNIC_OLD_RXPKT_DESC:
1641                 case QLCNIC_SYN_OFFLOAD:
1642                         ring = qlcnic_get_sts_type(sts_data0);
1643                         rxbuf = qlcnic_process_rcv(adapter, sds_ring,
1644                                         ring, sts_data0);
1645                         break;
1646                 case QLCNIC_LRO_DESC:
1647                         ring = qlcnic_get_lro_sts_type(sts_data0);
1648                         sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1649                         rxbuf = qlcnic_process_lro(adapter, sds_ring,
1650                                         ring, sts_data0, sts_data1);
1651                         break;
1652                 case QLCNIC_RESPONSE_DESC:
1653                         qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1654                 default:
1655                         goto skip;
1656                 }
1657
1658                 WARN_ON(desc_cnt > 1);
1659
1660                 if (likely(rxbuf))
1661                         list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1662                 else
1663                         adapter->stats.null_rxbuf++;
1664
1665 skip:
1666                 for (; desc_cnt > 0; desc_cnt--) {
1667                         desc = &sds_ring->desc_head[consumer];
1668                         desc->status_desc_data[0] =
1669                                 cpu_to_le64(STATUS_OWNER_PHANTOM);
1670                         consumer = get_next_index(consumer, sds_ring->num_desc);
1671                 }
1672                 count++;
1673         }
1674
1675         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1676                 struct qlcnic_host_rds_ring *rds_ring =
1677                         &adapter->recv_ctx->rds_rings[ring];
1678
1679                 if (!list_empty(&sds_ring->free_list[ring])) {
1680                         list_for_each(cur, &sds_ring->free_list[ring]) {
1681                                 rxbuf = list_entry(cur,
1682                                                 struct qlcnic_rx_buffer, list);
1683                                 qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf);
1684                         }
1685                         spin_lock(&rds_ring->lock);
1686                         list_splice_tail_init(&sds_ring->free_list[ring],
1687                                                 &rds_ring->free_list);
1688                         spin_unlock(&rds_ring->lock);
1689                 }
1690
1691                 qlcnic_post_rx_buffers_nodb(adapter, rds_ring);
1692         }
1693
1694         if (count) {
1695                 sds_ring->consumer = consumer;
1696                 writel(consumer, sds_ring->crb_sts_consumer);
1697         }
1698
1699         return count;
1700 }
1701
1702 void
1703 qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter,
1704         struct qlcnic_host_rds_ring *rds_ring)
1705 {
1706         struct rcv_desc *pdesc;
1707         struct qlcnic_rx_buffer *buffer;
1708         int count = 0;
1709         u32 producer;
1710         struct list_head *head;
1711
1712         producer = rds_ring->producer;
1713
1714         head = &rds_ring->free_list;
1715         while (!list_empty(head)) {
1716
1717                 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1718
1719                 if (!buffer->skb) {
1720                         if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1721                                 break;
1722                 }
1723
1724                 count++;
1725                 list_del(&buffer->list);
1726
1727                 /* make a rcv descriptor  */
1728                 pdesc = &rds_ring->desc_head[producer];
1729                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1730                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1731                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1732
1733                 producer = get_next_index(producer, rds_ring->num_desc);
1734         }
1735
1736         if (count) {
1737                 rds_ring->producer = producer;
1738                 writel((producer-1) & (rds_ring->num_desc-1),
1739                                 rds_ring->crb_rcv_producer);
1740         }
1741 }
1742
1743 static void
1744 qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
1745                 struct qlcnic_host_rds_ring *rds_ring)
1746 {
1747         struct rcv_desc *pdesc;
1748         struct qlcnic_rx_buffer *buffer;
1749         int  count = 0;
1750         uint32_t producer;
1751         struct list_head *head;
1752
1753         if (!spin_trylock(&rds_ring->lock))
1754                 return;
1755
1756         producer = rds_ring->producer;
1757
1758         head = &rds_ring->free_list;
1759         while (!list_empty(head)) {
1760
1761                 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1762
1763                 if (!buffer->skb) {
1764                         if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1765                                 break;
1766                 }
1767
1768                 count++;
1769                 list_del(&buffer->list);
1770
1771                 /* make a rcv descriptor  */
1772                 pdesc = &rds_ring->desc_head[producer];
1773                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1774                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1775                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1776
1777                 producer = get_next_index(producer, rds_ring->num_desc);
1778         }
1779
1780         if (count) {
1781                 rds_ring->producer = producer;
1782                 writel((producer - 1) & (rds_ring->num_desc - 1),
1783                                 rds_ring->crb_rcv_producer);
1784         }
1785         spin_unlock(&rds_ring->lock);
1786 }
1787
1788 static void dump_skb(struct sk_buff *skb, struct qlcnic_adapter *adapter)
1789 {
1790         int i;
1791         unsigned char *data = skb->data;
1792
1793         printk(KERN_INFO "\n");
1794         for (i = 0; i < skb->len; i++) {
1795                 QLCDB(adapter, DRV, "%02x ", data[i]);
1796                 if ((i & 0x0f) == 8)
1797                         printk(KERN_INFO "\n");
1798         }
1799 }
1800
1801 void qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter,
1802                 struct qlcnic_host_sds_ring *sds_ring,
1803                 int ring, u64 sts_data0)
1804 {
1805         struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1806         struct sk_buff *skb;
1807         struct qlcnic_host_rds_ring *rds_ring;
1808         int index, length, cksum, pkt_offset;
1809
1810         if (unlikely(ring >= adapter->max_rds_rings))
1811                 return;
1812
1813         rds_ring = &recv_ctx->rds_rings[ring];
1814
1815         index = qlcnic_get_sts_refhandle(sts_data0);
1816         length = qlcnic_get_sts_totallength(sts_data0);
1817         if (unlikely(index >= rds_ring->num_desc))
1818                 return;
1819
1820         cksum  = qlcnic_get_sts_status(sts_data0);
1821         pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1822
1823         skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1824         if (!skb)
1825                 return;
1826
1827         if (length > rds_ring->skb_size)
1828                 skb_put(skb, rds_ring->skb_size);
1829         else
1830                 skb_put(skb, length);
1831
1832         if (pkt_offset)
1833                 skb_pull(skb, pkt_offset);
1834
1835         if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr))
1836                 adapter->diag_cnt++;
1837         else
1838                 dump_skb(skb, adapter);
1839
1840         dev_kfree_skb_any(skb);
1841         adapter->stats.rx_pkts++;
1842         adapter->stats.rxbytes += length;
1843
1844         return;
1845 }
1846
1847 void
1848 qlcnic_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring)
1849 {
1850         struct qlcnic_adapter *adapter = sds_ring->adapter;
1851         struct status_desc *desc;
1852         u64 sts_data0;
1853         int ring, opcode, desc_cnt;
1854
1855         u32 consumer = sds_ring->consumer;
1856
1857         desc = &sds_ring->desc_head[consumer];
1858         sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1859
1860         if (!(sts_data0 & STATUS_OWNER_HOST))
1861                 return;
1862
1863         desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1864         opcode = qlcnic_get_sts_opcode(sts_data0);
1865         switch (opcode) {
1866         case QLCNIC_RESPONSE_DESC:
1867                 qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1868                 break;
1869         default:
1870                 ring = qlcnic_get_sts_type(sts_data0);
1871                 qlcnic_process_rcv_diag(adapter, sds_ring, ring, sts_data0);
1872                 break;
1873         }
1874
1875         for (; desc_cnt > 0; desc_cnt--) {
1876                 desc = &sds_ring->desc_head[consumer];
1877                 desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
1878                 consumer = get_next_index(consumer, sds_ring->num_desc);
1879         }
1880
1881         sds_ring->consumer = consumer;
1882         writel(consumer, sds_ring->crb_sts_consumer);
1883 }
1884
1885 void
1886 qlcnic_fetch_mac(struct qlcnic_adapter *adapter, u32 off1, u32 off2,
1887                         u8 alt_mac, u8 *mac)
1888 {
1889         u32 mac_low, mac_high;
1890         int i;
1891
1892         mac_low = QLCRD32(adapter, off1);
1893         mac_high = QLCRD32(adapter, off2);
1894
1895         if (alt_mac) {
1896                 mac_low |= (mac_low >> 16) | (mac_high << 16);
1897                 mac_high >>= 16;
1898         }
1899
1900         for (i = 0; i < 2; i++)
1901                 mac[i] = (u8)(mac_high >> ((1 - i) * 8));
1902         for (i = 2; i < 6; i++)
1903                 mac[i] = (u8)(mac_low >> ((5 - i) * 8));
1904 }