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         /* Halt all the indiviual PEGs and other blocks */
 426         /* disable all I2Q */
 427         QLCWR32(adapter, QLCNIC_CRB_I2Q + 0x10, 0x0);
 428         QLCWR32(adapter, QLCNIC_CRB_I2Q + 0x14, 0x0);
 429         QLCWR32(adapter, QLCNIC_CRB_I2Q + 0x18, 0x0);
 430         QLCWR32(adapter, QLCNIC_CRB_I2Q + 0x1c, 0x0);
 431         QLCWR32(adapter, QLCNIC_CRB_I2Q + 0x20, 0x0);
 432         QLCWR32(adapter, QLCNIC_CRB_I2Q + 0x24, 0x0);
 433
 434         /* disable all niu interrupts */
 435         QLCWR32(adapter, QLCNIC_CRB_NIU + 0x40, 0xff);
 436         /* disable xge rx/tx */
 437         QLCWR32(adapter, QLCNIC_CRB_NIU + 0x70000, 0x00);
 438         /* disable xg1 rx/tx */
 439         QLCWR32(adapter, QLCNIC_CRB_NIU + 0x80000, 0x00);
 440         /* disable sideband mac */
 441         QLCWR32(adapter, QLCNIC_CRB_NIU + 0x90000, 0x00);
 442         /* disable ap0 mac */
 443         QLCWR32(adapter, QLCNIC_CRB_NIU + 0xa0000, 0x00);
 444         /* disable ap1 mac */
 445         QLCWR32(adapter, QLCNIC_CRB_NIU + 0xb0000, 0x00);
 446
 447         /* halt sre */
 448         val = QLCRD32(adapter, QLCNIC_CRB_SRE + 0x1000);
 449         QLCWR32(adapter, QLCNIC_CRB_SRE + 0x1000, val & (~(0x1)));
 450
 451         /* halt epg */
 452         QLCWR32(adapter, QLCNIC_CRB_EPG + 0x1300, 0x1);
 453
 454         /* halt timers */
 455         QLCWR32(adapter, QLCNIC_CRB_TIMER + 0x0, 0x0);
 456         QLCWR32(adapter, QLCNIC_CRB_TIMER + 0x8, 0x0);
 457         QLCWR32(adapter, QLCNIC_CRB_TIMER + 0x10, 0x0);
 458         QLCWR32(adapter, QLCNIC_CRB_TIMER + 0x18, 0x0);
 459         QLCWR32(adapter, QLCNIC_CRB_TIMER + 0x100, 0x0);
 460         QLCWR32(adapter, QLCNIC_CRB_TIMER + 0x200, 0x0);
 461         /* halt pegs */
 462         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0x3c, 1);
 463         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_1 + 0x3c, 1);
 464         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_2 + 0x3c, 1);
 465         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_3 + 0x3c, 1);
 466         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_4 + 0x3c, 1);
 467         msleep(20);
 468
 469         qlcnic_rom_unlock(adapter);
 470         /* big hammer don't reset CAM block on reset */
 471         QLCWR32(adapter, QLCNIC_ROMUSB_GLB_SW_RESET, 0xfeffffff);
 472
 473         /* Init HW CRB block */
 474         if (qlcnic_rom_fast_read(adapter, 0, &n) != 0 || (n != 0xcafecafe) ||
 475                         qlcnic_rom_fast_read(adapter, 4, &n) != 0) {
 476                 dev_err(&pdev->dev, "ERROR Reading crb_init area: val:%x\n", n);
 477                 return -EIO;
 478         }
 479         offset = n & 0xffffU;
 480         n = (n >> 16) & 0xffffU;
 481
 482         if (n >= 1024) {
 483                 dev_err(&pdev->dev, "QLOGIC card flash not initialized.\n");
 484                 return -EIO;
 485         }
 486
 487         buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
 488         if (buf == NULL) {
 489                 dev_err(&pdev->dev, "Unable to calloc memory for rom read.\n");
 490                 return -ENOMEM;
 491         }
 492
 493         for (i = 0; i < n; i++) {
 494                 if (qlcnic_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
 495                 qlcnic_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
 496                         kfree(buf);
 497                         return -EIO;
 498                 }
 499
 500                 buf[i].addr = addr;
 501                 buf[i].data = val;
 502         }
 503
 504         for (i = 0; i < n; i++) {
 505
 506                 off = qlcnic_decode_crb_addr(buf[i].addr);
 507                 if (off == QLCNIC_ADDR_ERROR) {
 508                         dev_err(&pdev->dev, "CRB init value out of range %x\n",
 509                                         buf[i].addr);
 510                         continue;
 511                 }
 512                 off += QLCNIC_PCI_CRBSPACE;
 513
 514                 if (off & 1)
 515                         continue;
 516
 517                 /* skipping cold reboot MAGIC */
 518                 if (off == QLCNIC_CAM_RAM(0x1fc))
 519                         continue;
 520                 if (off == (QLCNIC_CRB_I2C0 + 0x1c))
 521                         continue;
 522                 if (off == (ROMUSB_GLB + 0xbc)) /* do not reset PCI */
 523                         continue;
 524                 if (off == (ROMUSB_GLB + 0xa8))
 525                         continue;
 526                 if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
 527                         continue;
 528                 if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
 529                         continue;
 530                 if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
 531                         continue;
 532                 if ((off & 0x0ff00000) == QLCNIC_CRB_DDR_NET)
 533                         continue;
 534                 /* skip the function enable register */
 535                 if (off == QLCNIC_PCIE_REG(PCIE_SETUP_FUNCTION))
 536                         continue;
 537                 if (off == QLCNIC_PCIE_REG(PCIE_SETUP_FUNCTION2))
 538                         continue;
 539                 if ((off & 0x0ff00000) == QLCNIC_CRB_SMB)
 540                         continue;
 541
 542                 init_delay = 1;
 543                 /* After writing this register, HW needs time for CRB */
 544                 /* to quiet down (else crb_window returns 0xffffffff) */
 545                 if (off == QLCNIC_ROMUSB_GLB_SW_RESET)
 546                         init_delay = 1000;
 547
 548                 QLCWR32(adapter, off, buf[i].data);
 549
 550                 msleep(init_delay);
 551         }
 552         kfree(buf);
 553
 554         /* Initialize protocol process engine */
 555         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_D + 0xec, 0x1e);
 556         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_D + 0x4c, 8);
 557         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_I + 0x4c, 8);
 558         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0x8, 0);
 559         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0xc, 0);
 560         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_1 + 0x8, 0);
 561         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_1 + 0xc, 0);
 562         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_2 + 0x8, 0);
 563         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_2 + 0xc, 0);
 564         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_3 + 0x8, 0);
 565         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_3 + 0xc, 0);
 566         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_4 + 0x8, 0);
 567         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_4 + 0xc, 0);
 568         msleep(1);
 569
 570         QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS1, 0);
 571         QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS2, 0);
 572
 573         return 0;
 574 }
 575
 576 static int qlcnic_cmd_peg_ready(struct qlcnic_adapter *adapter)
 577 {
 578         u32 val;
 579         int retries = QLCNIC_CMDPEG_CHECK_RETRY_COUNT;
 580
 581         do {
 582                 val = QLCRD32(adapter, CRB_CMDPEG_STATE);
 583
 584                 switch (val) {
 585                 case PHAN_INITIALIZE_COMPLETE:
 586                 case PHAN_INITIALIZE_ACK:
 587                         return 0;
 588                 case PHAN_INITIALIZE_FAILED:
 589                         goto out_err;
 590                 default:
 591                         break;
 592                 }
 593
 594                 msleep(QLCNIC_CMDPEG_CHECK_DELAY);
 595
 596         } while (--retries);
 597
 598         QLCWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
 599
 600 out_err:
 601         dev_err(&adapter->pdev->dev, "Command Peg initialization not "
 602                       "complete, state: 0x%x.\n", val);
 603         return -EIO;
 604 }
 605
 606 static int
 607 qlcnic_receive_peg_ready(struct qlcnic_adapter *adapter)
 608 {
 609         u32 val;
 610         int retries = QLCNIC_RCVPEG_CHECK_RETRY_COUNT;
 611
 612         do {
 613                 val = QLCRD32(adapter, CRB_RCVPEG_STATE);
 614
 615                 if (val == PHAN_PEG_RCV_INITIALIZED)
 616                         return 0;
 617
 618                 msleep(QLCNIC_RCVPEG_CHECK_DELAY);
 619
 620         } while (--retries);
 621
 622         if (!retries) {
 623                 dev_err(&adapter->pdev->dev, "Receive Peg initialization not "
 624                               "complete, state: 0x%x.\n", val);
 625                 return -EIO;
 626         }
 627
 628         return 0;
 629 }
 630
 631 int
 632 qlcnic_check_fw_status(struct qlcnic_adapter *adapter)
 633 {
 634         int err;
 635
 636         err = qlcnic_cmd_peg_ready(adapter);
 637         if (err)
 638                 return err;
 639
 640         err = qlcnic_receive_peg_ready(adapter);
 641         if (err)
 642                 return err;
 643
 644         QLCWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
 645
 646         return err;
 647 }
 648
 649 int
 650 qlcnic_setup_idc_param(struct qlcnic_adapter *adapter) {
 651
 652         int timeo;
 653         u32 val;
 654
 655         val = QLCRD32(adapter, QLCNIC_CRB_DEV_PARTITION_INFO);
 656         val = QLC_DEV_GET_DRV(val, adapter->portnum);
 657         if ((val & 0x3) != QLCNIC_TYPE_NIC) {
 658                 dev_err(&adapter->pdev->dev,
 659                         "Not an Ethernet NIC func=%u\n", val);
 660                 return -EIO;
 661         }
 662         adapter->physical_port = (val >> 2);
 663         if (qlcnic_rom_fast_read(adapter, QLCNIC_ROM_DEV_INIT_TIMEOUT, &timeo))
 664                 timeo = QLCNIC_INIT_TIMEOUT_SECS;
 665
 666         adapter->dev_init_timeo = timeo;
 667
 668         if (qlcnic_rom_fast_read(adapter, QLCNIC_ROM_DRV_RESET_TIMEOUT, &timeo))
 669                 timeo = QLCNIC_RESET_TIMEOUT_SECS;
 670
 671         adapter->reset_ack_timeo = timeo;
 672
 673         return 0;
 674 }
 675
 676 static int qlcnic_get_flt_entry(struct qlcnic_adapter *adapter, u8 region,
 677                                 struct qlcnic_flt_entry *region_entry)
 678 {
 679         struct qlcnic_flt_header flt_hdr;
 680         struct qlcnic_flt_entry *flt_entry;
 681         int i = 0, ret;
 682         u32 entry_size;
 683
 684         memset(region_entry, 0, sizeof(struct qlcnic_flt_entry));
 685         ret = qlcnic_rom_fast_read_words(adapter, QLCNIC_FLT_LOCATION,
 686                                          (u8 *)&flt_hdr,
 687                                          sizeof(struct qlcnic_flt_header));
 688         if (ret) {
 689                 dev_warn(&adapter->pdev->dev,
 690                          "error reading flash layout header\n");
 691                 return -EIO;
 692         }
 693
 694         entry_size = flt_hdr.len - sizeof(struct qlcnic_flt_header);
 695         flt_entry = (struct qlcnic_flt_entry *)vzalloc(entry_size);
 696         if (flt_entry == NULL) {
 697                 dev_warn(&adapter->pdev->dev, "error allocating memory\n");
 698                 return -EIO;
 699         }
 700
 701         ret = qlcnic_rom_fast_read_words(adapter, QLCNIC_FLT_LOCATION +
 702                                          sizeof(struct qlcnic_flt_header),
 703                                          (u8 *)flt_entry, entry_size);
 704         if (ret) {
 705                 dev_warn(&adapter->pdev->dev,
 706                          "error reading flash layout entries\n");
 707                 goto err_out;
 708         }
 709
 710         while (i < (entry_size/sizeof(struct qlcnic_flt_entry))) {
 711                 if (flt_entry[i].region == region)
 712                         break;
 713                 i++;
 714         }
 715         if (i >= (entry_size/sizeof(struct qlcnic_flt_entry))) {
 716                 dev_warn(&adapter->pdev->dev,
 717                          "region=%x not found in %d regions\n", region, i);
 718                 ret = -EIO;
 719                 goto err_out;
 720         }
 721         memcpy(region_entry, &flt_entry[i], sizeof(struct qlcnic_flt_entry));
 722
 723 err_out:
 724         vfree(flt_entry);
 725         return ret;
 726 }
 727
 728 int
 729 qlcnic_check_flash_fw_ver(struct qlcnic_adapter *adapter)
 730 {
 731         struct qlcnic_flt_entry fw_entry;
 732         u32 ver = -1, min_ver;
 733         int ret;
 734
 735         if (adapter->ahw->revision_id == QLCNIC_P3P_C0)
 736                 ret = qlcnic_get_flt_entry(adapter, QLCNIC_C0_FW_IMAGE_REGION,
 737                                                  &fw_entry);
 738         else
 739                 ret = qlcnic_get_flt_entry(adapter, QLCNIC_B0_FW_IMAGE_REGION,
 740                                                  &fw_entry);
 741
 742         if (!ret)
 743                 /* 0-4:-signature,  4-8:-fw version */
 744                 qlcnic_rom_fast_read(adapter, fw_entry.start_addr + 4,
 745                                      (int *)&ver);
 746         else
 747                 qlcnic_rom_fast_read(adapter, QLCNIC_FW_VERSION_OFFSET,
 748                                      (int *)&ver);
 749
 750         ver = QLCNIC_DECODE_VERSION(ver);
 751         min_ver = QLCNIC_MIN_FW_VERSION;
 752
 753         if (ver < min_ver) {
 754                 dev_err(&adapter->pdev->dev,
 755                         "firmware version %d.%d.%d unsupported."
 756                         "Min supported version %d.%d.%d\n",
 757                         _major(ver), _minor(ver), _build(ver),
 758                         _major(min_ver), _minor(min_ver), _build(min_ver));
 759                 return -EINVAL;
 760         }
 761
 762         return 0;
 763 }
 764
 765 static int
 766 qlcnic_has_mn(struct qlcnic_adapter *adapter)
 767 {
 768         u32 capability;
 769         capability = 0;
 770
 771         capability = QLCRD32(adapter, QLCNIC_PEG_TUNE_CAPABILITY);
 772         if (capability & QLCNIC_PEG_TUNE_MN_PRESENT)
 773                 return 1;
 774
 775         return 0;
 776 }
 777
 778 static
 779 struct uni_table_desc *qlcnic_get_table_desc(const u8 *unirom, int section)
 780 {
 781         u32 i;
 782         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 783         __le32 entries = cpu_to_le32(directory->num_entries);
 784
 785         for (i = 0; i < entries; i++) {
 786
 787                 __le32 offs = cpu_to_le32(directory->findex) +
 788                                 (i * cpu_to_le32(directory->entry_size));
 789                 __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
 790
 791                 if (tab_type == section)
 792                         return (struct uni_table_desc *) &unirom[offs];
 793         }
 794
 795         return NULL;
 796 }
 797
 798 #define FILEHEADER_SIZE (14 * 4)
 799
 800 static int
 801 qlcnic_validate_header(struct qlcnic_adapter *adapter)
 802 {
 803         const u8 *unirom = adapter->fw->data;
 804         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 805         __le32 fw_file_size = adapter->fw->size;
 806         __le32 entries;
 807         __le32 entry_size;
 808         __le32 tab_size;
 809
 810         if (fw_file_size < FILEHEADER_SIZE)
 811                 return -EINVAL;
 812
 813         entries = cpu_to_le32(directory->num_entries);
 814         entry_size = cpu_to_le32(directory->entry_size);
 815         tab_size = cpu_to_le32(directory->findex) + (entries * entry_size);
 816
 817         if (fw_file_size < tab_size)
 818                 return -EINVAL;
 819
 820         return 0;
 821 }
 822
 823 static int
 824 qlcnic_validate_bootld(struct qlcnic_adapter *adapter)
 825 {
 826         struct uni_table_desc *tab_desc;
 827         struct uni_data_desc *descr;
 828         const u8 *unirom = adapter->fw->data;
 829         int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 830                                 QLCNIC_UNI_BOOTLD_IDX_OFF));
 831         __le32 offs;
 832         __le32 tab_size;
 833         __le32 data_size;
 834
 835         tab_desc = qlcnic_get_table_desc(unirom, QLCNIC_UNI_DIR_SECT_BOOTLD);
 836
 837         if (!tab_desc)
 838                 return -EINVAL;
 839
 840         tab_size = cpu_to_le32(tab_desc->findex) +
 841                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 842
 843         if (adapter->fw->size < tab_size)
 844                 return -EINVAL;
 845
 846         offs = cpu_to_le32(tab_desc->findex) +
 847                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 848         descr = (struct uni_data_desc *)&unirom[offs];
 849
 850         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 851
 852         if (adapter->fw->size < data_size)
 853                 return -EINVAL;
 854
 855         return 0;
 856 }
 857
 858 static int
 859 qlcnic_validate_fw(struct qlcnic_adapter *adapter)
 860 {
 861         struct uni_table_desc *tab_desc;
 862         struct uni_data_desc *descr;
 863         const u8 *unirom = adapter->fw->data;
 864         int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 865                                 QLCNIC_UNI_FIRMWARE_IDX_OFF));
 866         __le32 offs;
 867         __le32 tab_size;
 868         __le32 data_size;
 869
 870         tab_desc = qlcnic_get_table_desc(unirom, QLCNIC_UNI_DIR_SECT_FW);
 871
 872         if (!tab_desc)
 873                 return -EINVAL;
 874
 875         tab_size = cpu_to_le32(tab_desc->findex) +
 876                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 877
 878         if (adapter->fw->size < tab_size)
 879                 return -EINVAL;
 880
 881         offs = cpu_to_le32(tab_desc->findex) +
 882                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 883         descr = (struct uni_data_desc *)&unirom[offs];
 884         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 885
 886         if (adapter->fw->size < data_size)
 887                 return -EINVAL;
 888
 889         return 0;
 890 }
 891
 892 static int
 893 qlcnic_validate_product_offs(struct qlcnic_adapter *adapter)
 894 {
 895         struct uni_table_desc *ptab_descr;
 896         const u8 *unirom = adapter->fw->data;
 897         int mn_present = qlcnic_has_mn(adapter);
 898         __le32 entries;
 899         __le32 entry_size;
 900         __le32 tab_size;
 901         u32 i;
 902
 903         ptab_descr = qlcnic_get_table_desc(unirom,
 904                                 QLCNIC_UNI_DIR_SECT_PRODUCT_TBL);
 905         if (!ptab_descr)
 906                 return -EINVAL;
 907
 908         entries = cpu_to_le32(ptab_descr->num_entries);
 909         entry_size = cpu_to_le32(ptab_descr->entry_size);
 910         tab_size = cpu_to_le32(ptab_descr->findex) + (entries * entry_size);
 911
 912         if (adapter->fw->size < tab_size)
 913                 return -EINVAL;
 914
 915 nomn:
 916         for (i = 0; i < entries; i++) {
 917
 918                 __le32 flags, file_chiprev, offs;
 919                 u8 chiprev = adapter->ahw->revision_id;
 920                 u32 flagbit;
 921
 922                 offs = cpu_to_le32(ptab_descr->findex) +
 923                                 (i * cpu_to_le32(ptab_descr->entry_size));
 924                 flags = cpu_to_le32(*((int *)&unirom[offs] +
 925                                                 QLCNIC_UNI_FLAGS_OFF));
 926                 file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
 927                                                 QLCNIC_UNI_CHIP_REV_OFF));
 928
 929                 flagbit = mn_present ? 1 : 2;
 930
 931                 if ((chiprev == file_chiprev) &&
 932                                         ((1ULL << flagbit) & flags)) {
 933                         adapter->file_prd_off = offs;
 934                         return 0;
 935                 }
 936         }
 937         if (mn_present) {
 938                 mn_present = 0;
 939                 goto nomn;
 940         }
 941         return -EINVAL;
 942 }
 943
 944 static int
 945 qlcnic_validate_unified_romimage(struct qlcnic_adapter *adapter)
 946 {
 947         if (qlcnic_validate_header(adapter)) {
 948                 dev_err(&adapter->pdev->dev,
 949                                 "unified image: header validation failed\n");
 950                 return -EINVAL;
 951         }
 952
 953         if (qlcnic_validate_product_offs(adapter)) {
 954                 dev_err(&adapter->pdev->dev,
 955                                 "unified image: product validation failed\n");
 956                 return -EINVAL;
 957         }
 958
 959         if (qlcnic_validate_bootld(adapter)) {
 960                 dev_err(&adapter->pdev->dev,
 961                                 "unified image: bootld validation failed\n");
 962                 return -EINVAL;
 963         }
 964
 965         if (qlcnic_validate_fw(adapter)) {
 966                 dev_err(&adapter->pdev->dev,
 967                                 "unified image: firmware validation failed\n");
 968                 return -EINVAL;
 969         }
 970
 971         return 0;
 972 }
 973
 974 static
 975 struct uni_data_desc *qlcnic_get_data_desc(struct qlcnic_adapter *adapter,
 976                         u32 section, u32 idx_offset)
 977 {
 978         const u8 *unirom = adapter->fw->data;
 979         int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 980                                                                 idx_offset));
 981         struct uni_table_desc *tab_desc;
 982         __le32 offs;
 983
 984         tab_desc = qlcnic_get_table_desc(unirom, section);
 985
 986         if (tab_desc == NULL)
 987                 return NULL;
 988
 989         offs = cpu_to_le32(tab_desc->findex) +
 990                         (cpu_to_le32(tab_desc->entry_size) * idx);
 991
 992         return (struct uni_data_desc *)&unirom[offs];
 993 }
 994
 995 static u8 *
 996 qlcnic_get_bootld_offs(struct qlcnic_adapter *adapter)
 997 {
 998         u32 offs = QLCNIC_BOOTLD_START;
 999
1000         if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
1001                 offs = cpu_to_le32((qlcnic_get_data_desc(adapter,
1002                                         QLCNIC_UNI_DIR_SECT_BOOTLD,
1003                                         QLCNIC_UNI_BOOTLD_IDX_OFF))->findex);
1004
1005         return (u8 *)&adapter->fw->data[offs];
1006 }
1007
1008 static u8 *
1009 qlcnic_get_fw_offs(struct qlcnic_adapter *adapter)
1010 {
1011         u32 offs = QLCNIC_IMAGE_START;
1012
1013         if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
1014                 offs = cpu_to_le32((qlcnic_get_data_desc(adapter,
1015                                         QLCNIC_UNI_DIR_SECT_FW,
1016                                         QLCNIC_UNI_FIRMWARE_IDX_OFF))->findex);
1017
1018         return (u8 *)&adapter->fw->data[offs];
1019 }
1020
1021 static __le32
1022 qlcnic_get_fw_size(struct qlcnic_adapter *adapter)
1023 {
1024         if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
1025                 return cpu_to_le32((qlcnic_get_data_desc(adapter,
1026                                         QLCNIC_UNI_DIR_SECT_FW,
1027                                         QLCNIC_UNI_FIRMWARE_IDX_OFF))->size);
1028         else
1029                 return cpu_to_le32(
1030                         *(u32 *)&adapter->fw->data[QLCNIC_FW_SIZE_OFFSET]);
1031 }
1032
1033 static __le32
1034 qlcnic_get_fw_version(struct qlcnic_adapter *adapter)
1035 {
1036         struct uni_data_desc *fw_data_desc;
1037         const struct firmware *fw = adapter->fw;
1038         __le32 major, minor, sub;
1039         const u8 *ver_str;
1040         int i, ret;
1041
1042         if (adapter->fw_type != QLCNIC_UNIFIED_ROMIMAGE)
1043                 return cpu_to_le32(*(u32 *)&fw->data[QLCNIC_FW_VERSION_OFFSET]);
1044
1045         fw_data_desc = qlcnic_get_data_desc(adapter, QLCNIC_UNI_DIR_SECT_FW,
1046                         QLCNIC_UNI_FIRMWARE_IDX_OFF);
1047         ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
1048                 cpu_to_le32(fw_data_desc->size) - 17;
1049
1050         for (i = 0; i < 12; i++) {
1051                 if (!strncmp(&ver_str[i], "REV=", 4)) {
1052                         ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
1053                                         &major, &minor, &sub);
1054                         if (ret != 3)
1055                                 return 0;
1056                         else
1057                                 return major + (minor << 8) + (sub << 16);
1058                 }
1059         }
1060
1061         return 0;
1062 }
1063
1064 static __le32
1065 qlcnic_get_bios_version(struct qlcnic_adapter *adapter)
1066 {
1067         const struct firmware *fw = adapter->fw;
1068         __le32 bios_ver, prd_off = adapter->file_prd_off;
1069
1070         if (adapter->fw_type != QLCNIC_UNIFIED_ROMIMAGE)
1071                 return cpu_to_le32(
1072                         *(u32 *)&fw->data[QLCNIC_BIOS_VERSION_OFFSET]);
1073
1074         bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
1075                                 + QLCNIC_UNI_BIOS_VERSION_OFF));
1076
1077         return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) + (bios_ver >> 24);
1078 }
1079
1080 static void qlcnic_rom_lock_recovery(struct qlcnic_adapter *adapter)
1081 {
1082         if (qlcnic_pcie_sem_lock(adapter, 2, QLCNIC_ROM_LOCK_ID))
1083                 dev_info(&adapter->pdev->dev, "Resetting rom_lock\n");
1084
1085         qlcnic_pcie_sem_unlock(adapter, 2);
1086 }
1087
1088 static int
1089 qlcnic_check_fw_hearbeat(struct qlcnic_adapter *adapter)
1090 {
1091         u32 heartbeat, ret = -EIO;
1092         int retries = QLCNIC_HEARTBEAT_CHECK_RETRY_COUNT;
1093
1094         adapter->heartbeat = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
1095
1096         do {
1097                 msleep(QLCNIC_HEARTBEAT_PERIOD_MSECS);
1098                 heartbeat = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
1099                 if (heartbeat != adapter->heartbeat) {
1100                         ret = QLCNIC_RCODE_SUCCESS;
1101                         break;
1102                 }
1103         } while (--retries);
1104
1105         return ret;
1106 }
1107
1108 int
1109 qlcnic_need_fw_reset(struct qlcnic_adapter *adapter)
1110 {
1111         if ((adapter->flags & QLCNIC_FW_HANG) ||
1112                         qlcnic_check_fw_hearbeat(adapter)) {
1113                 qlcnic_rom_lock_recovery(adapter);
1114                 return 1;
1115         }
1116
1117         if (adapter->need_fw_reset)
1118                 return 1;
1119
1120         if (adapter->fw)
1121                 return 1;
1122
1123         return 0;
1124 }
1125
1126 static const char *fw_name[] = {
1127         QLCNIC_UNIFIED_ROMIMAGE_NAME,
1128         QLCNIC_FLASH_ROMIMAGE_NAME,
1129 };
1130
1131 int
1132 qlcnic_load_firmware(struct qlcnic_adapter *adapter)
1133 {
1134         u64 *ptr64;
1135         u32 i, flashaddr, size;
1136         const struct firmware *fw = adapter->fw;
1137         struct pci_dev *pdev = adapter->pdev;
1138
1139         dev_info(&pdev->dev, "loading firmware from %s\n",
1140                         fw_name[adapter->fw_type]);
1141
1142         if (fw) {
1143                 __le64 data;
1144
1145                 size = (QLCNIC_IMAGE_START - QLCNIC_BOOTLD_START) / 8;
1146
1147                 ptr64 = (u64 *)qlcnic_get_bootld_offs(adapter);
1148                 flashaddr = QLCNIC_BOOTLD_START;
1149
1150                 for (i = 0; i < size; i++) {
1151                         data = cpu_to_le64(ptr64[i]);
1152
1153                         if (qlcnic_pci_mem_write_2M(adapter, flashaddr, data))
1154                                 return -EIO;
1155
1156                         flashaddr += 8;
1157                 }
1158
1159                 size = (__force u32)qlcnic_get_fw_size(adapter) / 8;
1160
1161                 ptr64 = (u64 *)qlcnic_get_fw_offs(adapter);
1162                 flashaddr = QLCNIC_IMAGE_START;
1163
1164                 for (i = 0; i < size; i++) {
1165                         data = cpu_to_le64(ptr64[i]);
1166
1167                         if (qlcnic_pci_mem_write_2M(adapter,
1168                                                 flashaddr, data))
1169                                 return -EIO;
1170
1171                         flashaddr += 8;
1172                 }
1173
1174                 size = (__force u32)qlcnic_get_fw_size(adapter) % 8;
1175                 if (size) {
1176                         data = cpu_to_le64(ptr64[i]);
1177
1178                         if (qlcnic_pci_mem_write_2M(adapter,
1179                                                 flashaddr, data))
1180                                 return -EIO;
1181                 }
1182
1183         } else {
1184                 u64 data;
1185                 u32 hi, lo;
1186                 int ret;
1187                 struct qlcnic_flt_entry bootld_entry;
1188
1189                 ret = qlcnic_get_flt_entry(adapter, QLCNIC_BOOTLD_REGION,
1190                                         &bootld_entry);
1191                 if (!ret) {
1192                         size = bootld_entry.size / 8;
1193                         flashaddr = bootld_entry.start_addr;
1194                 } else {
1195                         size = (QLCNIC_IMAGE_START - QLCNIC_BOOTLD_START) / 8;
1196                         flashaddr = QLCNIC_BOOTLD_START;
1197                         dev_info(&pdev->dev,
1198                                 "using legacy method to get flash fw region");
1199                 }
1200
1201                 for (i = 0; i < size; i++) {
1202                         if (qlcnic_rom_fast_read(adapter,
1203                                         flashaddr, (int *)&lo) != 0)
1204                                 return -EIO;
1205                         if (qlcnic_rom_fast_read(adapter,
1206                                         flashaddr + 4, (int *)&hi) != 0)
1207                                 return -EIO;
1208
1209                         data = (((u64)hi << 32) | lo);
1210
1211                         if (qlcnic_pci_mem_write_2M(adapter,
1212                                                 flashaddr, data))
1213                                 return -EIO;
1214
1215                         flashaddr += 8;
1216                 }
1217         }
1218         msleep(1);
1219
1220         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0x18, 0x1020);
1221         QLCWR32(adapter, QLCNIC_ROMUSB_GLB_SW_RESET, 0x80001e);
1222         return 0;
1223 }
1224
1225 static int
1226 qlcnic_validate_firmware(struct qlcnic_adapter *adapter)
1227 {
1228         __le32 val;
1229         u32 ver, bios, min_size;
1230         struct pci_dev *pdev = adapter->pdev;
1231         const struct firmware *fw = adapter->fw;
1232         u8 fw_type = adapter->fw_type;
1233
1234         if (fw_type == QLCNIC_UNIFIED_ROMIMAGE) {
1235                 if (qlcnic_validate_unified_romimage(adapter))
1236                         return -EINVAL;
1237
1238                 min_size = QLCNIC_UNI_FW_MIN_SIZE;
1239         } else {
1240                 val = cpu_to_le32(*(u32 *)&fw->data[QLCNIC_FW_MAGIC_OFFSET]);
1241                 if ((__force u32)val != QLCNIC_BDINFO_MAGIC)
1242                         return -EINVAL;
1243
1244                 min_size = QLCNIC_FW_MIN_SIZE;
1245         }
1246
1247         if (fw->size < min_size)
1248                 return -EINVAL;
1249
1250         val = qlcnic_get_fw_version(adapter);
1251         ver = QLCNIC_DECODE_VERSION(val);
1252
1253         if (ver < QLCNIC_MIN_FW_VERSION) {
1254                 dev_err(&pdev->dev,
1255                                 "%s: firmware version %d.%d.%d unsupported\n",
1256                 fw_name[fw_type], _major(ver), _minor(ver), _build(ver));
1257                 return -EINVAL;
1258         }
1259
1260         val = qlcnic_get_bios_version(adapter);
1261         qlcnic_rom_fast_read(adapter, QLCNIC_BIOS_VERSION_OFFSET, (int *)&bios);
1262         if ((__force u32)val != bios) {
1263                 dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
1264                                 fw_name[fw_type]);
1265                 return -EINVAL;
1266         }
1267
1268         QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
1269         return 0;
1270 }
1271
1272 static void
1273 qlcnic_get_next_fwtype(struct qlcnic_adapter *adapter)
1274 {
1275         u8 fw_type;
1276
1277         switch (adapter->fw_type) {
1278         case QLCNIC_UNKNOWN_ROMIMAGE:
1279                 fw_type = QLCNIC_UNIFIED_ROMIMAGE;
1280                 break;
1281
1282         case QLCNIC_UNIFIED_ROMIMAGE:
1283         default:
1284                 fw_type = QLCNIC_FLASH_ROMIMAGE;
1285                 break;
1286         }
1287
1288         adapter->fw_type = fw_type;
1289 }
1290
1291
1292
1293 void qlcnic_request_firmware(struct qlcnic_adapter *adapter)
1294 {
1295         struct pci_dev *pdev = adapter->pdev;
1296         int rc;
1297
1298         adapter->fw_type = QLCNIC_UNKNOWN_ROMIMAGE;
1299
1300 next:
1301         qlcnic_get_next_fwtype(adapter);
1302
1303         if (adapter->fw_type == QLCNIC_FLASH_ROMIMAGE) {
1304                 adapter->fw = NULL;
1305         } else {
1306                 rc = request_firmware(&adapter->fw,
1307                                 fw_name[adapter->fw_type], &pdev->dev);
1308                 if (rc != 0)
1309                         goto next;
1310
1311                 rc = qlcnic_validate_firmware(adapter);
1312                 if (rc != 0) {
1313                         release_firmware(adapter->fw);
1314                         msleep(1);
1315                         goto next;
1316                 }
1317         }
1318 }
1319
1320
1321 void
1322 qlcnic_release_firmware(struct qlcnic_adapter *adapter)
1323 {
1324         if (adapter->fw)
1325                 release_firmware(adapter->fw);
1326         adapter->fw = NULL;
1327 }
1328
1329 static void
1330 qlcnic_handle_linkevent(struct qlcnic_adapter *adapter,
1331                                 struct qlcnic_fw_msg *msg)
1332 {
1333         u32 cable_OUI;
1334         u16 cable_len;
1335         u16 link_speed;
1336         u8  link_status, module, duplex, autoneg;
1337         u8 lb_status = 0;
1338         struct net_device *netdev = adapter->netdev;
1339
1340         adapter->has_link_events = 1;
1341
1342         cable_OUI = msg->body[1] & 0xffffffff;
1343         cable_len = (msg->body[1] >> 32) & 0xffff;
1344         link_speed = (msg->body[1] >> 48) & 0xffff;
1345
1346         link_status = msg->body[2] & 0xff;
1347         duplex = (msg->body[2] >> 16) & 0xff;
1348         autoneg = (msg->body[2] >> 24) & 0xff;
1349         lb_status = (msg->body[2] >> 32) & 0x3;
1350
1351         module = (msg->body[2] >> 8) & 0xff;
1352         if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE)
1353                 dev_info(&netdev->dev, "unsupported cable: OUI 0x%x, "
1354                                 "length %d\n", cable_OUI, cable_len);
1355         else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN)
1356                 dev_info(&netdev->dev, "unsupported cable length %d\n",
1357                                 cable_len);
1358
1359         if (!link_status && (lb_status == QLCNIC_ILB_MODE ||
1360             lb_status == QLCNIC_ELB_MODE))
1361                 adapter->ahw->loopback_state |= QLCNIC_LINKEVENT;
1362
1363         qlcnic_advert_link_change(adapter, link_status);
1364
1365         if (duplex == LINKEVENT_FULL_DUPLEX)
1366                 adapter->link_duplex = DUPLEX_FULL;
1367         else
1368                 adapter->link_duplex = DUPLEX_HALF;
1369
1370         adapter->module_type = module;
1371         adapter->link_autoneg = autoneg;
1372         adapter->link_speed = link_speed;
1373 }
1374
1375 static void
1376 qlcnic_handle_fw_message(int desc_cnt, int index,
1377                 struct qlcnic_host_sds_ring *sds_ring)
1378 {
1379         struct qlcnic_fw_msg msg;
1380         struct status_desc *desc;
1381         struct qlcnic_adapter *adapter;
1382         struct device *dev;
1383         int i = 0, opcode, ret;
1384
1385         while (desc_cnt > 0 && i < 8) {
1386                 desc = &sds_ring->desc_head[index];
1387                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1388                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1389
1390                 index = get_next_index(index, sds_ring->num_desc);
1391                 desc_cnt--;
1392         }
1393
1394         adapter = sds_ring->adapter;
1395         dev = &adapter->pdev->dev;
1396         opcode = qlcnic_get_nic_msg_opcode(msg.body[0]);
1397
1398         switch (opcode) {
1399         case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1400                 qlcnic_handle_linkevent(adapter, &msg);
1401                 break;
1402         case QLCNIC_C2H_OPCODE_CONFIG_LOOPBACK:
1403                 ret = (u32)(msg.body[1]);
1404                 switch (ret) {
1405                 case 0:
1406                         adapter->ahw->loopback_state |= QLCNIC_LB_RESPONSE;
1407                         break;
1408                 case 1:
1409                         dev_info(dev, "loopback already in progress\n");
1410                         adapter->diag_cnt = -QLCNIC_TEST_IN_PROGRESS;
1411                         break;
1412                 case 2:
1413                         dev_info(dev, "loopback cable is not connected\n");
1414                         adapter->diag_cnt = -QLCNIC_LB_CABLE_NOT_CONN;
1415                         break;
1416                 default:
1417                         dev_info(dev, "loopback configure request failed,"
1418                                         " ret %x\n", ret);
1419                         adapter->diag_cnt = -QLCNIC_UNDEFINED_ERROR;
1420                         break;
1421                 }
1422                 break;
1423         default:
1424                 break;
1425         }
1426 }
1427
1428 static int
1429 qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter,
1430                 struct qlcnic_host_rds_ring *rds_ring,
1431                 struct qlcnic_rx_buffer *buffer)
1432 {
1433         struct sk_buff *skb;
1434         dma_addr_t dma;
1435         struct pci_dev *pdev = adapter->pdev;
1436
1437         skb = dev_alloc_skb(rds_ring->skb_size);
1438         if (!skb) {
1439                 adapter->stats.skb_alloc_failure++;
1440                 return -ENOMEM;
1441         }
1442
1443         skb_reserve(skb, NET_IP_ALIGN);
1444
1445         dma = pci_map_single(pdev, skb->data,
1446                         rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1447
1448         if (pci_dma_mapping_error(pdev, dma)) {
1449                 adapter->stats.rx_dma_map_error++;
1450                 dev_kfree_skb_any(skb);
1451                 return -ENOMEM;
1452         }
1453
1454         buffer->skb = skb;
1455         buffer->dma = dma;
1456
1457         return 0;
1458 }
1459
1460 static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter,
1461                 struct qlcnic_host_rds_ring *rds_ring, u16 index, u16 cksum)
1462 {
1463         struct qlcnic_rx_buffer *buffer;
1464         struct sk_buff *skb;
1465
1466         buffer = &rds_ring->rx_buf_arr[index];
1467
1468         if (unlikely(buffer->skb == NULL)) {
1469                 WARN_ON(1);
1470                 return NULL;
1471         }
1472
1473         pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
1474                         PCI_DMA_FROMDEVICE);
1475
1476         skb = buffer->skb;
1477
1478         if (likely((adapter->netdev->features & NETIF_F_RXCSUM) &&
1479             (cksum == STATUS_CKSUM_OK || cksum == STATUS_CKSUM_LOOP))) {
1480                 adapter->stats.csummed++;
1481                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1482         } else {
1483                 skb_checksum_none_assert(skb);
1484         }
1485
1486         skb->dev = adapter->netdev;
1487
1488         buffer->skb = NULL;
1489
1490         return skb;
1491 }
1492
1493 static inline int
1494 qlcnic_check_rx_tagging(struct qlcnic_adapter *adapter, struct sk_buff *skb,
1495                         u16 *vlan_tag)
1496 {
1497         struct ethhdr *eth_hdr;
1498
1499         if (!__vlan_get_tag(skb, vlan_tag)) {
1500                 eth_hdr = (struct ethhdr *) skb->data;
1501                 memmove(skb->data + VLAN_HLEN, eth_hdr, ETH_ALEN * 2);
1502                 skb_pull(skb, VLAN_HLEN);
1503         }
1504         if (!adapter->pvid)
1505                 return 0;
1506
1507         if (*vlan_tag == adapter->pvid) {
1508                 /* Outer vlan tag. Packet should follow non-vlan path */
1509                 *vlan_tag = 0xffff;
1510                 return 0;
1511         }
1512         if (adapter->flags & QLCNIC_TAGGING_ENABLED)
1513                 return 0;
1514
1515         return -EINVAL;
1516 }
1517
1518 static struct qlcnic_rx_buffer *
1519 qlcnic_process_rcv(struct qlcnic_adapter *adapter,
1520                 struct qlcnic_host_sds_ring *sds_ring,
1521                 int ring, u64 sts_data0)
1522 {
1523         struct net_device *netdev = adapter->netdev;
1524         struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1525         struct qlcnic_rx_buffer *buffer;
1526         struct sk_buff *skb;
1527         struct qlcnic_host_rds_ring *rds_ring;
1528         int index, length, cksum, pkt_offset;
1529         u16 vid = 0xffff;
1530
1531         if (unlikely(ring >= adapter->max_rds_rings))
1532                 return NULL;
1533
1534         rds_ring = &recv_ctx->rds_rings[ring];
1535
1536         index = qlcnic_get_sts_refhandle(sts_data0);
1537         if (unlikely(index >= rds_ring->num_desc))
1538                 return NULL;
1539
1540         buffer = &rds_ring->rx_buf_arr[index];
1541
1542         length = qlcnic_get_sts_totallength(sts_data0);
1543         cksum  = qlcnic_get_sts_status(sts_data0);
1544         pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1545
1546         skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1547         if (!skb)
1548                 return buffer;
1549
1550         if (length > rds_ring->skb_size)
1551                 skb_put(skb, rds_ring->skb_size);
1552         else
1553                 skb_put(skb, length);
1554
1555         if (pkt_offset)
1556                 skb_pull(skb, pkt_offset);
1557
1558         if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
1559                 adapter->stats.rxdropped++;
1560                 dev_kfree_skb(skb);
1561                 return buffer;
1562         }
1563
1564         skb->protocol = eth_type_trans(skb, netdev);
1565
1566         if (vid != 0xffff)
1567                 __vlan_hwaccel_put_tag(skb, vid);
1568
1569         napi_gro_receive(&sds_ring->napi, skb);
1570
1571         adapter->stats.rx_pkts++;
1572         adapter->stats.rxbytes += length;
1573
1574         return buffer;
1575 }
1576
1577 #define QLC_TCP_HDR_SIZE            20
1578 #define QLC_TCP_TS_OPTION_SIZE      12
1579 #define QLC_TCP_TS_HDR_SIZE         (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE)
1580
1581 static struct qlcnic_rx_buffer *
1582 qlcnic_process_lro(struct qlcnic_adapter *adapter,
1583                 struct qlcnic_host_sds_ring *sds_ring,
1584                 int ring, u64 sts_data0, u64 sts_data1)
1585 {
1586         struct net_device *netdev = adapter->netdev;
1587         struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1588         struct qlcnic_rx_buffer *buffer;
1589         struct sk_buff *skb;
1590         struct qlcnic_host_rds_ring *rds_ring;
1591         struct iphdr *iph;
1592         struct tcphdr *th;
1593         bool push, timestamp;
1594         int l2_hdr_offset, l4_hdr_offset;
1595         int index;
1596         u16 lro_length, length, data_offset;
1597         u32 seq_number;
1598         u16 vid = 0xffff;
1599
1600         if (unlikely(ring > adapter->max_rds_rings))
1601                 return NULL;
1602
1603         rds_ring = &recv_ctx->rds_rings[ring];
1604
1605         index = qlcnic_get_lro_sts_refhandle(sts_data0);
1606         if (unlikely(index > rds_ring->num_desc))
1607                 return NULL;
1608
1609         buffer = &rds_ring->rx_buf_arr[index];
1610
1611         timestamp = qlcnic_get_lro_sts_timestamp(sts_data0);
1612         lro_length = qlcnic_get_lro_sts_length(sts_data0);
1613         l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0);
1614         l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0);
1615         push = qlcnic_get_lro_sts_push_flag(sts_data0);
1616         seq_number = qlcnic_get_lro_sts_seq_number(sts_data1);
1617
1618         skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1619         if (!skb)
1620                 return buffer;
1621
1622         if (timestamp)
1623                 data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE;
1624         else
1625                 data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE;
1626
1627         skb_put(skb, lro_length + data_offset);
1628
1629         skb_pull(skb, l2_hdr_offset);
1630
1631         if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
1632                 adapter->stats.rxdropped++;
1633                 dev_kfree_skb(skb);
1634                 return buffer;
1635         }
1636
1637         skb->protocol = eth_type_trans(skb, netdev);
1638
1639         iph = (struct iphdr *)skb->data;
1640         th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
1641
1642         length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1643         iph->tot_len = htons(length);
1644         iph->check = 0;
1645         iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
1646         th->psh = push;
1647         th->seq = htonl(seq_number);
1648
1649         length = skb->len;
1650
1651         if (vid != 0xffff)
1652                 __vlan_hwaccel_put_tag(skb, vid);
1653         netif_receive_skb(skb);
1654
1655         adapter->stats.lro_pkts++;
1656         adapter->stats.lrobytes += length;
1657
1658         return buffer;
1659 }
1660
1661 int
1662 qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max)
1663 {
1664         struct qlcnic_adapter *adapter = sds_ring->adapter;
1665         struct list_head *cur;
1666         struct status_desc *desc;
1667         struct qlcnic_rx_buffer *rxbuf;
1668         u64 sts_data0, sts_data1;
1669
1670         int count = 0;
1671         int opcode, ring, desc_cnt;
1672         u32 consumer = sds_ring->consumer;
1673
1674         while (count < max) {
1675                 desc = &sds_ring->desc_head[consumer];
1676                 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1677
1678                 if (!(sts_data0 & STATUS_OWNER_HOST))
1679                         break;
1680
1681                 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1682                 opcode = qlcnic_get_sts_opcode(sts_data0);
1683
1684                 switch (opcode) {
1685                 case QLCNIC_RXPKT_DESC:
1686                 case QLCNIC_OLD_RXPKT_DESC:
1687                 case QLCNIC_SYN_OFFLOAD:
1688                         ring = qlcnic_get_sts_type(sts_data0);
1689                         rxbuf = qlcnic_process_rcv(adapter, sds_ring,
1690                                         ring, sts_data0);
1691                         break;
1692                 case QLCNIC_LRO_DESC:
1693                         ring = qlcnic_get_lro_sts_type(sts_data0);
1694                         sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1695                         rxbuf = qlcnic_process_lro(adapter, sds_ring,
1696                                         ring, sts_data0, sts_data1);
1697                         break;
1698                 case QLCNIC_RESPONSE_DESC:
1699                         qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1700                 default:
1701                         goto skip;
1702                 }
1703
1704                 WARN_ON(desc_cnt > 1);
1705
1706                 if (likely(rxbuf))
1707                         list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1708                 else
1709                         adapter->stats.null_rxbuf++;
1710
1711 skip:
1712                 for (; desc_cnt > 0; desc_cnt--) {
1713                         desc = &sds_ring->desc_head[consumer];
1714                         desc->status_desc_data[0] =
1715                                 cpu_to_le64(STATUS_OWNER_PHANTOM);
1716                         consumer = get_next_index(consumer, sds_ring->num_desc);
1717                 }
1718                 count++;
1719         }
1720
1721         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1722                 struct qlcnic_host_rds_ring *rds_ring =
1723                         &adapter->recv_ctx->rds_rings[ring];
1724
1725                 if (!list_empty(&sds_ring->free_list[ring])) {
1726                         list_for_each(cur, &sds_ring->free_list[ring]) {
1727                                 rxbuf = list_entry(cur,
1728                                                 struct qlcnic_rx_buffer, list);
1729                                 qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf);
1730                         }
1731                         spin_lock(&rds_ring->lock);
1732                         list_splice_tail_init(&sds_ring->free_list[ring],
1733                                                 &rds_ring->free_list);
1734                         spin_unlock(&rds_ring->lock);
1735                 }
1736
1737                 qlcnic_post_rx_buffers_nodb(adapter, rds_ring);
1738         }
1739
1740         if (count) {
1741                 sds_ring->consumer = consumer;
1742                 writel(consumer, sds_ring->crb_sts_consumer);
1743         }
1744
1745         return count;
1746 }
1747
1748 void
1749 qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter,
1750         struct qlcnic_host_rds_ring *rds_ring)
1751 {
1752         struct rcv_desc *pdesc;
1753         struct qlcnic_rx_buffer *buffer;
1754         int count = 0;
1755         u32 producer;
1756         struct list_head *head;
1757
1758         producer = rds_ring->producer;
1759
1760         head = &rds_ring->free_list;
1761         while (!list_empty(head)) {
1762
1763                 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1764
1765                 if (!buffer->skb) {
1766                         if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1767                                 break;
1768                 }
1769
1770                 count++;
1771                 list_del(&buffer->list);
1772
1773                 /* make a rcv descriptor  */
1774                 pdesc = &rds_ring->desc_head[producer];
1775                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1776                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1777                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1778
1779                 producer = get_next_index(producer, rds_ring->num_desc);
1780         }
1781
1782         if (count) {
1783                 rds_ring->producer = producer;
1784                 writel((producer-1) & (rds_ring->num_desc-1),
1785                                 rds_ring->crb_rcv_producer);
1786         }
1787 }
1788
1789 static void
1790 qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
1791                 struct qlcnic_host_rds_ring *rds_ring)
1792 {
1793         struct rcv_desc *pdesc;
1794         struct qlcnic_rx_buffer *buffer;
1795         int  count = 0;
1796         uint32_t producer;
1797         struct list_head *head;
1798
1799         if (!spin_trylock(&rds_ring->lock))
1800                 return;
1801
1802         producer = rds_ring->producer;
1803
1804         head = &rds_ring->free_list;
1805         while (!list_empty(head)) {
1806
1807                 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1808
1809                 if (!buffer->skb) {
1810                         if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1811                                 break;
1812                 }
1813
1814                 count++;
1815                 list_del(&buffer->list);
1816
1817                 /* make a rcv descriptor  */
1818                 pdesc = &rds_ring->desc_head[producer];
1819                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1820                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1821                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1822
1823                 producer = get_next_index(producer, rds_ring->num_desc);
1824         }
1825
1826         if (count) {
1827                 rds_ring->producer = producer;
1828                 writel((producer - 1) & (rds_ring->num_desc - 1),
1829                                 rds_ring->crb_rcv_producer);
1830         }
1831         spin_unlock(&rds_ring->lock);
1832 }
1833
1834 static void dump_skb(struct sk_buff *skb, struct qlcnic_adapter *adapter)
1835 {
1836         int i;
1837         unsigned char *data = skb->data;
1838
1839         printk(KERN_INFO "\n");
1840         for (i = 0; i < skb->len; i++) {
1841                 QLCDB(adapter, DRV, "%02x ", data[i]);
1842                 if ((i & 0x0f) == 8)
1843                         printk(KERN_INFO "\n");
1844         }
1845 }
1846
1847 void qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter,
1848                 struct qlcnic_host_sds_ring *sds_ring,
1849                 int ring, u64 sts_data0)
1850 {
1851         struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1852         struct sk_buff *skb;
1853         struct qlcnic_host_rds_ring *rds_ring;
1854         int index, length, cksum, pkt_offset;
1855
1856         if (unlikely(ring >= adapter->max_rds_rings))
1857                 return;
1858
1859         rds_ring = &recv_ctx->rds_rings[ring];
1860
1861         index = qlcnic_get_sts_refhandle(sts_data0);
1862         length = qlcnic_get_sts_totallength(sts_data0);
1863         if (unlikely(index >= rds_ring->num_desc))
1864                 return;
1865
1866         cksum  = qlcnic_get_sts_status(sts_data0);
1867         pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1868
1869         skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1870         if (!skb)
1871                 return;
1872
1873         if (length > rds_ring->skb_size)
1874                 skb_put(skb, rds_ring->skb_size);
1875         else
1876                 skb_put(skb, length);
1877
1878         if (pkt_offset)
1879                 skb_pull(skb, pkt_offset);
1880
1881         if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr))
1882                 adapter->diag_cnt++;
1883         else
1884                 dump_skb(skb, adapter);
1885
1886         dev_kfree_skb_any(skb);
1887         adapter->stats.rx_pkts++;
1888         adapter->stats.rxbytes += length;
1889
1890         return;
1891 }
1892
1893 void
1894 qlcnic_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring)
1895 {
1896         struct qlcnic_adapter *adapter = sds_ring->adapter;
1897         struct status_desc *desc;
1898         u64 sts_data0;
1899         int ring, opcode, desc_cnt;
1900
1901         u32 consumer = sds_ring->consumer;
1902
1903         desc = &sds_ring->desc_head[consumer];
1904         sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1905
1906         if (!(sts_data0 & STATUS_OWNER_HOST))
1907                 return;
1908
1909         desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1910         opcode = qlcnic_get_sts_opcode(sts_data0);
1911         switch (opcode) {
1912         case QLCNIC_RESPONSE_DESC:
1913                 qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1914                 break;
1915         default:
1916                 ring = qlcnic_get_sts_type(sts_data0);
1917                 qlcnic_process_rcv_diag(adapter, sds_ring, ring, sts_data0);
1918                 break;
1919         }
1920
1921         for (; desc_cnt > 0; desc_cnt--) {
1922                 desc = &sds_ring->desc_head[consumer];
1923                 desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
1924                 consumer = get_next_index(consumer, sds_ring->num_desc);
1925         }
1926
1927         sds_ring->consumer = consumer;
1928         writel(consumer, sds_ring->crb_sts_consumer);
1929 }
1930
1931 void
1932 qlcnic_fetch_mac(struct qlcnic_adapter *adapter, u32 off1, u32 off2,
1933                         u8 alt_mac, u8 *mac)
1934 {
1935         u32 mac_low, mac_high;
1936         int i;
1937
1938         mac_low = off1;
1939         mac_high = off2;
1940
1941         if (alt_mac) {
1942                 mac_low |= (mac_low >> 16) | (mac_high << 16);
1943                 mac_high >>= 16;
1944         }
1945
1946         for (i = 0; i < 2; i++)
1947                 mac[i] = (u8)(mac_high >> ((1 - i) * 8));
1948         for (i = 2; i < 6; i++)
1949                 mac[i] = (u8)(mac_low >> ((5 - i) * 8));
1950 }