drivers/net/qlcnic/qlcnic_init.c

   1 /*
   2  * Copyright (C) 2009 - QLogic Corporation.
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  18  * MA  02111-1307, USA.
  19  *
  20  * The full GNU General Public License is included in this distribution
  21  * in the file called "COPYING".
  22  *
  23  */
  24
  25 #include <linux/netdevice.h>
  26 #include <linux/delay.h>
  27 #include <linux/slab.h>
  28 #include "qlcnic.h"
  29
  30 struct crb_addr_pair {
  31         u32 addr;
  32         u32 data;
  33 };
  34
  35 #define QLCNIC_MAX_CRB_XFORM 60
  36 static unsigned int crb_addr_xform[QLCNIC_MAX_CRB_XFORM];
  37
  38 #define crb_addr_transform(name) \
  39         (crb_addr_xform[QLCNIC_HW_PX_MAP_CRB_##name] = \
  40         QLCNIC_HW_CRB_HUB_AGT_ADR_##name << 20)
  41
  42 #define QLCNIC_ADDR_ERROR (0xffffffff)
  43
  44 static void
  45 qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
  46                 struct qlcnic_host_rds_ring *rds_ring);
  47
  48 static void crb_addr_transform_setup(void)
  49 {
  50         crb_addr_transform(XDMA);
  51         crb_addr_transform(TIMR);
  52         crb_addr_transform(SRE);
  53         crb_addr_transform(SQN3);
  54         crb_addr_transform(SQN2);
  55         crb_addr_transform(SQN1);
  56         crb_addr_transform(SQN0);
  57         crb_addr_transform(SQS3);
  58         crb_addr_transform(SQS2);
  59         crb_addr_transform(SQS1);
  60         crb_addr_transform(SQS0);
  61         crb_addr_transform(RPMX7);
  62         crb_addr_transform(RPMX6);
  63         crb_addr_transform(RPMX5);
  64         crb_addr_transform(RPMX4);
  65         crb_addr_transform(RPMX3);
  66         crb_addr_transform(RPMX2);
  67         crb_addr_transform(RPMX1);
  68         crb_addr_transform(RPMX0);
  69         crb_addr_transform(ROMUSB);
  70         crb_addr_transform(SN);
  71         crb_addr_transform(QMN);
  72         crb_addr_transform(QMS);
  73         crb_addr_transform(PGNI);
  74         crb_addr_transform(PGND);
  75         crb_addr_transform(PGN3);
  76         crb_addr_transform(PGN2);
  77         crb_addr_transform(PGN1);
  78         crb_addr_transform(PGN0);
  79         crb_addr_transform(PGSI);
  80         crb_addr_transform(PGSD);
  81         crb_addr_transform(PGS3);
  82         crb_addr_transform(PGS2);
  83         crb_addr_transform(PGS1);
  84         crb_addr_transform(PGS0);
  85         crb_addr_transform(PS);
  86         crb_addr_transform(PH);
  87         crb_addr_transform(NIU);
  88         crb_addr_transform(I2Q);
  89         crb_addr_transform(EG);
  90         crb_addr_transform(MN);
  91         crb_addr_transform(MS);
  92         crb_addr_transform(CAS2);
  93         crb_addr_transform(CAS1);
  94         crb_addr_transform(CAS0);
  95         crb_addr_transform(CAM);
  96         crb_addr_transform(C2C1);
  97         crb_addr_transform(C2C0);
  98         crb_addr_transform(SMB);
  99         crb_addr_transform(OCM0);
 100         crb_addr_transform(I2C0);
 101 }
 102
 103 void qlcnic_release_rx_buffers(struct qlcnic_adapter *adapter)
 104 {
 105         struct qlcnic_recv_context *recv_ctx;
 106         struct qlcnic_host_rds_ring *rds_ring;
 107         struct qlcnic_rx_buffer *rx_buf;
 108         int i, ring;
 109
 110         recv_ctx = &adapter->recv_ctx;
 111         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 112                 rds_ring = &recv_ctx->rds_rings[ring];
 113                 for (i = 0; i < rds_ring->num_desc; ++i) {
 114                         rx_buf = &(rds_ring->rx_buf_arr[i]);
 115                         if (rx_buf->skb == NULL)
 116                                 continue;
 117
 118                         pci_unmap_single(adapter->pdev,
 119                                         rx_buf->dma,
 120                                         rds_ring->dma_size,
 121                                         PCI_DMA_FROMDEVICE);
 122
 123                         dev_kfree_skb_any(rx_buf->skb);
 124                 }
 125         }
 126 }
 127
 128 void qlcnic_reset_rx_buffers_list(struct qlcnic_adapter *adapter)
 129 {
 130         struct qlcnic_recv_context *recv_ctx;
 131         struct qlcnic_host_rds_ring *rds_ring;
 132         struct qlcnic_rx_buffer *rx_buf;
 133         int i, ring;
 134
 135         recv_ctx = &adapter->recv_ctx;
 136         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 137                 rds_ring = &recv_ctx->rds_rings[ring];
 138
 139                 spin_lock(&rds_ring->lock);
 140
 141                 INIT_LIST_HEAD(&rds_ring->free_list);
 142
 143                 rx_buf = rds_ring->rx_buf_arr;
 144                 for (i = 0; i < rds_ring->num_desc; i++) {
 145                         list_add_tail(&rx_buf->list,
 146                                         &rds_ring->free_list);
 147                         rx_buf++;
 148                 }
 149
 150                 spin_unlock(&rds_ring->lock);
 151         }
 152 }
 153
 154 void qlcnic_release_tx_buffers(struct qlcnic_adapter *adapter)
 155 {
 156         struct qlcnic_cmd_buffer *cmd_buf;
 157         struct qlcnic_skb_frag *buffrag;
 158         int i, j;
 159         struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
 160
 161         cmd_buf = tx_ring->cmd_buf_arr;
 162         for (i = 0; i < tx_ring->num_desc; i++) {
 163                 buffrag = cmd_buf->frag_array;
 164                 if (buffrag->dma) {
 165                         pci_unmap_single(adapter->pdev, buffrag->dma,
 166                                          buffrag->length, PCI_DMA_TODEVICE);
 167                         buffrag->dma = 0ULL;
 168                 }
 169                 for (j = 0; j < cmd_buf->frag_count; j++) {
 170                         buffrag++;
 171                         if (buffrag->dma) {
 172                                 pci_unmap_page(adapter->pdev, buffrag->dma,
 173                                                buffrag->length,
 174                                                PCI_DMA_TODEVICE);
 175                                 buffrag->dma = 0ULL;
 176                         }
 177                 }
 178                 if (cmd_buf->skb) {
 179                         dev_kfree_skb_any(cmd_buf->skb);
 180                         cmd_buf->skb = NULL;
 181                 }
 182                 cmd_buf++;
 183         }
 184 }
 185
 186 void qlcnic_free_sw_resources(struct qlcnic_adapter *adapter)
 187 {
 188         struct qlcnic_recv_context *recv_ctx;
 189         struct qlcnic_host_rds_ring *rds_ring;
 190         struct qlcnic_host_tx_ring *tx_ring;
 191         int ring;
 192
 193         recv_ctx = &adapter->recv_ctx;
 194
 195         if (recv_ctx->rds_rings == NULL)
 196                 goto skip_rds;
 197
 198         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 199                 rds_ring = &recv_ctx->rds_rings[ring];
 200                 vfree(rds_ring->rx_buf_arr);
 201                 rds_ring->rx_buf_arr = NULL;
 202         }
 203         kfree(recv_ctx->rds_rings);
 204
 205 skip_rds:
 206         if (adapter->tx_ring == NULL)
 207                 return;
 208
 209         tx_ring = adapter->tx_ring;
 210         vfree(tx_ring->cmd_buf_arr);
 211         tx_ring->cmd_buf_arr = NULL;
 212         kfree(adapter->tx_ring);
 213         adapter->tx_ring = NULL;
 214 }
 215
 216 int qlcnic_alloc_sw_resources(struct qlcnic_adapter *adapter)
 217 {
 218         struct qlcnic_recv_context *recv_ctx;
 219         struct qlcnic_host_rds_ring *rds_ring;
 220         struct qlcnic_host_sds_ring *sds_ring;
 221         struct qlcnic_host_tx_ring *tx_ring;
 222         struct qlcnic_rx_buffer *rx_buf;
 223         int ring, i, size;
 224
 225         struct qlcnic_cmd_buffer *cmd_buf_arr;
 226         struct net_device *netdev = adapter->netdev;
 227
 228         size = sizeof(struct qlcnic_host_tx_ring);
 229         tx_ring = kzalloc(size, GFP_KERNEL);
 230         if (tx_ring == NULL) {
 231                 dev_err(&netdev->dev, "failed to allocate tx ring struct\n");
 232                 return -ENOMEM;
 233         }
 234         adapter->tx_ring = tx_ring;
 235
 236         tx_ring->num_desc = adapter->num_txd;
 237         tx_ring->txq = netdev_get_tx_queue(netdev, 0);
 238
 239         cmd_buf_arr = vmalloc(TX_BUFF_RINGSIZE(tx_ring));
 240         if (cmd_buf_arr == NULL) {
 241                 dev_err(&netdev->dev, "failed to allocate cmd buffer ring\n");
 242                 goto err_out;
 243         }
 244         memset(cmd_buf_arr, 0, TX_BUFF_RINGSIZE(tx_ring));
 245         tx_ring->cmd_buf_arr = cmd_buf_arr;
 246
 247         recv_ctx = &adapter->recv_ctx;
 248
 249         size = adapter->max_rds_rings * sizeof(struct qlcnic_host_rds_ring);
 250         rds_ring = kzalloc(size, GFP_KERNEL);
 251         if (rds_ring == NULL) {
 252                 dev_err(&netdev->dev, "failed to allocate rds ring struct\n");
 253                 goto err_out;
 254         }
 255         recv_ctx->rds_rings = rds_ring;
 256
 257         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 258                 rds_ring = &recv_ctx->rds_rings[ring];
 259                 switch (ring) {
 260                 case RCV_RING_NORMAL:
 261                         rds_ring->num_desc = adapter->num_rxd;
 262                         rds_ring->dma_size = QLCNIC_P3_RX_BUF_MAX_LEN;
 263                         rds_ring->skb_size = rds_ring->dma_size + NET_IP_ALIGN;
 264                         break;
 265
 266                 case RCV_RING_JUMBO:
 267                         rds_ring->num_desc = adapter->num_jumbo_rxd;
 268                         rds_ring->dma_size =
 269                                 QLCNIC_P3_RX_JUMBO_BUF_MAX_LEN;
 270
 271                         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
 272                                 rds_ring->dma_size += QLCNIC_LRO_BUFFER_EXTRA;
 273
 274                         rds_ring->skb_size =
 275                                 rds_ring->dma_size + NET_IP_ALIGN;
 276                         break;
 277                 }
 278                 rds_ring->rx_buf_arr = (struct qlcnic_rx_buffer *)
 279                         vmalloc(RCV_BUFF_RINGSIZE(rds_ring));
 280                 if (rds_ring->rx_buf_arr == NULL) {
 281                         dev_err(&netdev->dev, "Failed to allocate "
 282                                 "rx buffer ring %d\n", ring);
 283                         goto err_out;
 284                 }
 285                 memset(rds_ring->rx_buf_arr, 0, RCV_BUFF_RINGSIZE(rds_ring));
 286                 INIT_LIST_HEAD(&rds_ring->free_list);
 287                 /*
 288                  * Now go through all of them, set reference handles
 289                  * and put them in the queues.
 290                  */
 291                 rx_buf = rds_ring->rx_buf_arr;
 292                 for (i = 0; i < rds_ring->num_desc; i++) {
 293                         list_add_tail(&rx_buf->list,
 294                                         &rds_ring->free_list);
 295                         rx_buf->ref_handle = i;
 296                         rx_buf++;
 297                 }
 298                 spin_lock_init(&rds_ring->lock);
 299         }
 300
 301         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 302                 sds_ring = &recv_ctx->sds_rings[ring];
 303                 sds_ring->irq = adapter->msix_entries[ring].vector;
 304                 sds_ring->adapter = adapter;
 305                 sds_ring->num_desc = adapter->num_rxd;
 306
 307                 for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
 308                         INIT_LIST_HEAD(&sds_ring->free_list[i]);
 309         }
 310
 311         return 0;
 312
 313 err_out:
 314         qlcnic_free_sw_resources(adapter);
 315         return -ENOMEM;
 316 }
 317
 318 /*
 319  * Utility to translate from internal Phantom CRB address
 320  * to external PCI CRB address.
 321  */
 322 static u32 qlcnic_decode_crb_addr(u32 addr)
 323 {
 324         int i;
 325         u32 base_addr, offset, pci_base;
 326
 327         crb_addr_transform_setup();
 328
 329         pci_base = QLCNIC_ADDR_ERROR;
 330         base_addr = addr & 0xfff00000;
 331         offset = addr & 0x000fffff;
 332
 333         for (i = 0; i < QLCNIC_MAX_CRB_XFORM; i++) {
 334                 if (crb_addr_xform[i] == base_addr) {
 335                         pci_base = i << 20;
 336                         break;
 337                 }
 338         }
 339         if (pci_base == QLCNIC_ADDR_ERROR)
 340                 return pci_base;
 341         else
 342                 return pci_base + offset;
 343 }
 344
 345 #define QLCNIC_MAX_ROM_WAIT_USEC        100
 346
 347 static int qlcnic_wait_rom_done(struct qlcnic_adapter *adapter)
 348 {
 349         long timeout = 0;
 350         long done = 0;
 351
 352         cond_resched();
 353
 354         while (done == 0) {
 355                 done = QLCRD32(adapter, QLCNIC_ROMUSB_GLB_STATUS);
 356                 done &= 2;
 357                 if (++timeout >= QLCNIC_MAX_ROM_WAIT_USEC) {
 358                         dev_err(&adapter->pdev->dev,
 359                                 "Timeout reached  waiting for rom done");
 360                         return -EIO;
 361                 }
 362                 udelay(1);
 363         }
 364         return 0;
 365 }
 366
 367 static int do_rom_fast_read(struct qlcnic_adapter *adapter,
 368                             int addr, int *valp)
 369 {
 370         QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ADDRESS, addr);
 371         QLCWR32(adapter, QLCNIC_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 372         QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ABYTE_CNT, 3);
 373         QLCWR32(adapter, QLCNIC_ROMUSB_ROM_INSTR_OPCODE, 0xb);
 374         if (qlcnic_wait_rom_done(adapter)) {
 375                 dev_err(&adapter->pdev->dev, "Error waiting for rom done\n");
 376                 return -EIO;
 377         }
 378         /* reset abyte_cnt and dummy_byte_cnt */
 379         QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ABYTE_CNT, 0);
 380         udelay(10);
 381         QLCWR32(adapter, QLCNIC_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 382
 383         *valp = QLCRD32(adapter, QLCNIC_ROMUSB_ROM_RDATA);
 384         return 0;
 385 }
 386
 387 static int do_rom_fast_read_words(struct qlcnic_adapter *adapter, int addr,
 388                                   u8 *bytes, size_t size)
 389 {
 390         int addridx;
 391         int ret = 0;
 392
 393         for (addridx = addr; addridx < (addr + size); addridx += 4) {
 394                 int v;
 395                 ret = do_rom_fast_read(adapter, addridx, &v);
 396                 if (ret != 0)
 397                         break;
 398                 *(__le32 *)bytes = cpu_to_le32(v);
 399                 bytes += 4;
 400         }
 401
 402         return ret;
 403 }
 404
 405 int
 406 qlcnic_rom_fast_read_words(struct qlcnic_adapter *adapter, int addr,
 407                                 u8 *bytes, size_t size)
 408 {
 409         int ret;
 410
 411         ret = qlcnic_rom_lock(adapter);
 412         if (ret < 0)
 413                 return ret;
 414
 415         ret = do_rom_fast_read_words(adapter, addr, bytes, size);
 416
 417         qlcnic_rom_unlock(adapter);
 418         return ret;
 419 }
 420
 421 int qlcnic_rom_fast_read(struct qlcnic_adapter *adapter, int addr, int *valp)
 422 {
 423         int ret;
 424
 425         if (qlcnic_rom_lock(adapter) != 0)
 426                 return -EIO;
 427
 428         ret = do_rom_fast_read(adapter, addr, valp);
 429         qlcnic_rom_unlock(adapter);
 430         return ret;
 431 }
 432
 433 int qlcnic_pinit_from_rom(struct qlcnic_adapter *adapter)
 434 {
 435         int addr, val;
 436         int i, n, init_delay;
 437         struct crb_addr_pair *buf;
 438         unsigned offset;
 439         u32 off;
 440         struct pci_dev *pdev = adapter->pdev;
 441
 442         /* resetall */
 443         qlcnic_rom_lock(adapter);
 444         QLCWR32(adapter, QLCNIC_ROMUSB_GLB_SW_RESET, 0xfeffffff);
 445         qlcnic_rom_unlock(adapter);
 446
 447         if (qlcnic_rom_fast_read(adapter, 0, &n) != 0 || (n != 0xcafecafe) ||
 448                         qlcnic_rom_fast_read(adapter, 4, &n) != 0) {
 449                 dev_err(&pdev->dev, "ERROR Reading crb_init area: val:%x\n", n);
 450                 return -EIO;
 451         }
 452         offset = n & 0xffffU;
 453         n = (n >> 16) & 0xffffU;
 454
 455         if (n >= 1024) {
 456                 dev_err(&pdev->dev, "QLOGIC card flash not initialized.\n");
 457                 return -EIO;
 458         }
 459
 460         buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
 461         if (buf == NULL) {
 462                 dev_err(&pdev->dev, "Unable to calloc memory for rom read.\n");
 463                 return -ENOMEM;
 464         }
 465
 466         for (i = 0; i < n; i++) {
 467                 if (qlcnic_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
 468                 qlcnic_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
 469                         kfree(buf);
 470                         return -EIO;
 471                 }
 472
 473                 buf[i].addr = addr;
 474                 buf[i].data = val;
 475         }
 476
 477         for (i = 0; i < n; i++) {
 478
 479                 off = qlcnic_decode_crb_addr(buf[i].addr);
 480                 if (off == QLCNIC_ADDR_ERROR) {
 481                         dev_err(&pdev->dev, "CRB init value out of range %x\n",
 482                                         buf[i].addr);
 483                         continue;
 484                 }
 485                 off += QLCNIC_PCI_CRBSPACE;
 486
 487                 if (off & 1)
 488                         continue;
 489
 490                 /* skipping cold reboot MAGIC */
 491                 if (off == QLCNIC_CAM_RAM(0x1fc))
 492                         continue;
 493                 if (off == (QLCNIC_CRB_I2C0 + 0x1c))
 494                         continue;
 495                 if (off == (ROMUSB_GLB + 0xbc)) /* do not reset PCI */
 496                         continue;
 497                 if (off == (ROMUSB_GLB + 0xa8))
 498                         continue;
 499                 if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
 500                         continue;
 501                 if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
 502                         continue;
 503                 if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
 504                         continue;
 505                 if ((off & 0x0ff00000) == QLCNIC_CRB_DDR_NET)
 506                         continue;
 507                 /* skip the function enable register */
 508                 if (off == QLCNIC_PCIE_REG(PCIE_SETUP_FUNCTION))
 509                         continue;
 510                 if (off == QLCNIC_PCIE_REG(PCIE_SETUP_FUNCTION2))
 511                         continue;
 512                 if ((off & 0x0ff00000) == QLCNIC_CRB_SMB)
 513                         continue;
 514
 515                 init_delay = 1;
 516                 /* After writing this register, HW needs time for CRB */
 517                 /* to quiet down (else crb_window returns 0xffffffff) */
 518                 if (off == QLCNIC_ROMUSB_GLB_SW_RESET)
 519                         init_delay = 1000;
 520
 521                 QLCWR32(adapter, off, buf[i].data);
 522
 523                 msleep(init_delay);
 524         }
 525         kfree(buf);
 526
 527         /* p2dn replyCount */
 528         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_D + 0xec, 0x1e);
 529         /* disable_peg_cache 0 & 1*/
 530         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_D + 0x4c, 8);
 531         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_I + 0x4c, 8);
 532
 533         /* peg_clr_all */
 534         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0x8, 0);
 535         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0xc, 0);
 536         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_1 + 0x8, 0);
 537         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_1 + 0xc, 0);
 538         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_2 + 0x8, 0);
 539         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_2 + 0xc, 0);
 540         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_3 + 0x8, 0);
 541         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_3 + 0xc, 0);
 542         return 0;
 543 }
 544
 545 int
 546 qlcnic_setup_idc_param(struct qlcnic_adapter *adapter) {
 547
 548         int timeo;
 549         u32 val;
 550
 551         val = QLCRD32(adapter, QLCNIC_CRB_DEV_PARTITION_INFO);
 552         val = QLC_DEV_GET_DRV(val, adapter->portnum);
 553         if ((val & 0x3) != QLCNIC_TYPE_NIC) {
 554                 dev_err(&adapter->pdev->dev,
 555                         "Not an Ethernet NIC func=%u\n", val);
 556                 return -EIO;
 557         }
 558         adapter->physical_port = (val >> 2);
 559         if (qlcnic_rom_fast_read(adapter, QLCNIC_ROM_DEV_INIT_TIMEOUT, &timeo))
 560                 timeo = 30;
 561
 562         adapter->dev_init_timeo = timeo;
 563
 564         if (qlcnic_rom_fast_read(adapter, QLCNIC_ROM_DRV_RESET_TIMEOUT, &timeo))
 565                 timeo = 10;
 566
 567         adapter->reset_ack_timeo = timeo;
 568
 569         return 0;
 570 }
 571
 572 int
 573 qlcnic_check_flash_fw_ver(struct qlcnic_adapter *adapter)
 574 {
 575         u32 ver = -1, min_ver;
 576
 577         qlcnic_rom_fast_read(adapter, QLCNIC_FW_VERSION_OFFSET, (int *)&ver);
 578
 579         ver = QLCNIC_DECODE_VERSION(ver);
 580         min_ver = QLCNIC_MIN_FW_VERSION;
 581
 582         if (ver < min_ver) {
 583                 dev_err(&adapter->pdev->dev,
 584                         "firmware version %d.%d.%d unsupported."
 585                         "Min supported version %d.%d.%d\n",
 586                         _major(ver), _minor(ver), _build(ver),
 587                         _major(min_ver), _minor(min_ver), _build(min_ver));
 588                 return -EINVAL;
 589         }
 590
 591         return 0;
 592 }
 593
 594 static int
 595 qlcnic_has_mn(struct qlcnic_adapter *adapter)
 596 {
 597         u32 capability;
 598         capability = 0;
 599
 600         capability = QLCRD32(adapter, QLCNIC_PEG_TUNE_CAPABILITY);
 601         if (capability & QLCNIC_PEG_TUNE_MN_PRESENT)
 602                 return 1;
 603
 604         return 0;
 605 }
 606
 607 static
 608 struct uni_table_desc *qlcnic_get_table_desc(const u8 *unirom, int section)
 609 {
 610         u32 i;
 611         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 612         __le32 entries = cpu_to_le32(directory->num_entries);
 613
 614         for (i = 0; i < entries; i++) {
 615
 616                 __le32 offs = cpu_to_le32(directory->findex) +
 617                                 (i * cpu_to_le32(directory->entry_size));
 618                 __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
 619
 620                 if (tab_type == section)
 621                         return (struct uni_table_desc *) &unirom[offs];
 622         }
 623
 624         return NULL;
 625 }
 626
 627 #define FILEHEADER_SIZE (14 * 4)
 628
 629 static int
 630 qlcnic_validate_header(struct qlcnic_adapter *adapter)
 631 {
 632         const u8 *unirom = adapter->fw->data;
 633         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 634         __le32 fw_file_size = adapter->fw->size;
 635         __le32 entries;
 636         __le32 entry_size;
 637         __le32 tab_size;
 638
 639         if (fw_file_size < FILEHEADER_SIZE)
 640                 return -EINVAL;
 641
 642         entries = cpu_to_le32(directory->num_entries);
 643         entry_size = cpu_to_le32(directory->entry_size);
 644         tab_size = cpu_to_le32(directory->findex) + (entries * entry_size);
 645
 646         if (fw_file_size < tab_size)
 647                 return -EINVAL;
 648
 649         return 0;
 650 }
 651
 652 static int
 653 qlcnic_validate_bootld(struct qlcnic_adapter *adapter)
 654 {
 655         struct uni_table_desc *tab_desc;
 656         struct uni_data_desc *descr;
 657         const u8 *unirom = adapter->fw->data;
 658         int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 659                                 QLCNIC_UNI_BOOTLD_IDX_OFF));
 660         __le32 offs;
 661         __le32 tab_size;
 662         __le32 data_size;
 663
 664         tab_desc = qlcnic_get_table_desc(unirom, QLCNIC_UNI_DIR_SECT_BOOTLD);
 665
 666         if (!tab_desc)
 667                 return -EINVAL;
 668
 669         tab_size = cpu_to_le32(tab_desc->findex) +
 670                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 671
 672         if (adapter->fw->size < tab_size)
 673                 return -EINVAL;
 674
 675         offs = cpu_to_le32(tab_desc->findex) +
 676                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 677         descr = (struct uni_data_desc *)&unirom[offs];
 678
 679         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 680
 681         if (adapter->fw->size < data_size)
 682                 return -EINVAL;
 683
 684         return 0;
 685 }
 686
 687 static int
 688 qlcnic_validate_fw(struct qlcnic_adapter *adapter)
 689 {
 690         struct uni_table_desc *tab_desc;
 691         struct uni_data_desc *descr;
 692         const u8 *unirom = adapter->fw->data;
 693         int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 694                                 QLCNIC_UNI_FIRMWARE_IDX_OFF));
 695         __le32 offs;
 696         __le32 tab_size;
 697         __le32 data_size;
 698
 699         tab_desc = qlcnic_get_table_desc(unirom, QLCNIC_UNI_DIR_SECT_FW);
 700
 701         if (!tab_desc)
 702                 return -EINVAL;
 703
 704         tab_size = cpu_to_le32(tab_desc->findex) +
 705                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 706
 707         if (adapter->fw->size < tab_size)
 708                 return -EINVAL;
 709
 710         offs = cpu_to_le32(tab_desc->findex) +
 711                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 712         descr = (struct uni_data_desc *)&unirom[offs];
 713         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 714
 715         if (adapter->fw->size < data_size)
 716                 return -EINVAL;
 717
 718         return 0;
 719 }
 720
 721 static int
 722 qlcnic_validate_product_offs(struct qlcnic_adapter *adapter)
 723 {
 724         struct uni_table_desc *ptab_descr;
 725         const u8 *unirom = adapter->fw->data;
 726         int mn_present = qlcnic_has_mn(adapter);
 727         __le32 entries;
 728         __le32 entry_size;
 729         __le32 tab_size;
 730         u32 i;
 731
 732         ptab_descr = qlcnic_get_table_desc(unirom,
 733                                 QLCNIC_UNI_DIR_SECT_PRODUCT_TBL);
 734         if (!ptab_descr)
 735                 return -EINVAL;
 736
 737         entries = cpu_to_le32(ptab_descr->num_entries);
 738         entry_size = cpu_to_le32(ptab_descr->entry_size);
 739         tab_size = cpu_to_le32(ptab_descr->findex) + (entries * entry_size);
 740
 741         if (adapter->fw->size < tab_size)
 742                 return -EINVAL;
 743
 744 nomn:
 745         for (i = 0; i < entries; i++) {
 746
 747                 __le32 flags, file_chiprev, offs;
 748                 u8 chiprev = adapter->ahw.revision_id;
 749                 u32 flagbit;
 750
 751                 offs = cpu_to_le32(ptab_descr->findex) +
 752                                 (i * cpu_to_le32(ptab_descr->entry_size));
 753                 flags = cpu_to_le32(*((int *)&unirom[offs] +
 754                                                 QLCNIC_UNI_FLAGS_OFF));
 755                 file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
 756                                                 QLCNIC_UNI_CHIP_REV_OFF));
 757
 758                 flagbit = mn_present ? 1 : 2;
 759
 760                 if ((chiprev == file_chiprev) &&
 761                                         ((1ULL << flagbit) & flags)) {
 762                         adapter->file_prd_off = offs;
 763                         return 0;
 764                 }
 765         }
 766         if (mn_present) {
 767                 mn_present = 0;
 768                 goto nomn;
 769         }
 770         return -EINVAL;
 771 }
 772
 773 static int
 774 qlcnic_validate_unified_romimage(struct qlcnic_adapter *adapter)
 775 {
 776         if (qlcnic_validate_header(adapter)) {
 777                 dev_err(&adapter->pdev->dev,
 778                                 "unified image: header validation failed\n");
 779                 return -EINVAL;
 780         }
 781
 782         if (qlcnic_validate_product_offs(adapter)) {
 783                 dev_err(&adapter->pdev->dev,
 784                                 "unified image: product validation failed\n");
 785                 return -EINVAL;
 786         }
 787
 788         if (qlcnic_validate_bootld(adapter)) {
 789                 dev_err(&adapter->pdev->dev,
 790                                 "unified image: bootld validation failed\n");
 791                 return -EINVAL;
 792         }
 793
 794         if (qlcnic_validate_fw(adapter)) {
 795                 dev_err(&adapter->pdev->dev,
 796                                 "unified image: firmware validation failed\n");
 797                 return -EINVAL;
 798         }
 799
 800         return 0;
 801 }
 802
 803 static
 804 struct uni_data_desc *qlcnic_get_data_desc(struct qlcnic_adapter *adapter,
 805                         u32 section, u32 idx_offset)
 806 {
 807         const u8 *unirom = adapter->fw->data;
 808         int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 809                                                                 idx_offset));
 810         struct uni_table_desc *tab_desc;
 811         __le32 offs;
 812
 813         tab_desc = qlcnic_get_table_desc(unirom, section);
 814
 815         if (tab_desc == NULL)
 816                 return NULL;
 817
 818         offs = cpu_to_le32(tab_desc->findex) +
 819                         (cpu_to_le32(tab_desc->entry_size) * idx);
 820
 821         return (struct uni_data_desc *)&unirom[offs];
 822 }
 823
 824 static u8 *
 825 qlcnic_get_bootld_offs(struct qlcnic_adapter *adapter)
 826 {
 827         u32 offs = QLCNIC_BOOTLD_START;
 828
 829         if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
 830                 offs = cpu_to_le32((qlcnic_get_data_desc(adapter,
 831                                         QLCNIC_UNI_DIR_SECT_BOOTLD,
 832                                         QLCNIC_UNI_BOOTLD_IDX_OFF))->findex);
 833
 834         return (u8 *)&adapter->fw->data[offs];
 835 }
 836
 837 static u8 *
 838 qlcnic_get_fw_offs(struct qlcnic_adapter *adapter)
 839 {
 840         u32 offs = QLCNIC_IMAGE_START;
 841
 842         if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
 843                 offs = cpu_to_le32((qlcnic_get_data_desc(adapter,
 844                                         QLCNIC_UNI_DIR_SECT_FW,
 845                                         QLCNIC_UNI_FIRMWARE_IDX_OFF))->findex);
 846
 847         return (u8 *)&adapter->fw->data[offs];
 848 }
 849
 850 static __le32
 851 qlcnic_get_fw_size(struct qlcnic_adapter *adapter)
 852 {
 853         if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
 854                 return cpu_to_le32((qlcnic_get_data_desc(adapter,
 855                                         QLCNIC_UNI_DIR_SECT_FW,
 856                                         QLCNIC_UNI_FIRMWARE_IDX_OFF))->size);
 857         else
 858                 return cpu_to_le32(
 859                         *(u32 *)&adapter->fw->data[QLCNIC_FW_SIZE_OFFSET]);
 860 }
 861
 862 static __le32
 863 qlcnic_get_fw_version(struct qlcnic_adapter *adapter)
 864 {
 865         struct uni_data_desc *fw_data_desc;
 866         const struct firmware *fw = adapter->fw;
 867         __le32 major, minor, sub;
 868         const u8 *ver_str;
 869         int i, ret;
 870
 871         if (adapter->fw_type != QLCNIC_UNIFIED_ROMIMAGE)
 872                 return cpu_to_le32(*(u32 *)&fw->data[QLCNIC_FW_VERSION_OFFSET]);
 873
 874         fw_data_desc = qlcnic_get_data_desc(adapter, QLCNIC_UNI_DIR_SECT_FW,
 875                         QLCNIC_UNI_FIRMWARE_IDX_OFF);
 876         ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
 877                 cpu_to_le32(fw_data_desc->size) - 17;
 878
 879         for (i = 0; i < 12; i++) {
 880                 if (!strncmp(&ver_str[i], "REV=", 4)) {
 881                         ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
 882                                         &major, &minor, &sub);
 883                         if (ret != 3)
 884                                 return 0;
 885                         else
 886                                 return major + (minor << 8) + (sub << 16);
 887                 }
 888         }
 889
 890         return 0;
 891 }
 892
 893 static __le32
 894 qlcnic_get_bios_version(struct qlcnic_adapter *adapter)
 895 {
 896         const struct firmware *fw = adapter->fw;
 897         __le32 bios_ver, prd_off = adapter->file_prd_off;
 898
 899         if (adapter->fw_type != QLCNIC_UNIFIED_ROMIMAGE)
 900                 return cpu_to_le32(
 901                         *(u32 *)&fw->data[QLCNIC_BIOS_VERSION_OFFSET]);
 902
 903         bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
 904                                 + QLCNIC_UNI_BIOS_VERSION_OFF));
 905
 906         return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) + (bios_ver >> 24);
 907 }
 908
 909 int
 910 qlcnic_need_fw_reset(struct qlcnic_adapter *adapter)
 911 {
 912         u32 count, old_count;
 913         u32 val, version, major, minor, build;
 914         int i, timeout;
 915
 916         if (adapter->need_fw_reset)
 917                 return 1;
 918
 919         /* last attempt had failed */
 920         if (QLCRD32(adapter, CRB_CMDPEG_STATE) == PHAN_INITIALIZE_FAILED)
 921                 return 1;
 922
 923         old_count = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
 924
 925         for (i = 0; i < 10; i++) {
 926
 927                 timeout = msleep_interruptible(200);
 928                 if (timeout) {
 929                         QLCWR32(adapter, CRB_CMDPEG_STATE,
 930                                         PHAN_INITIALIZE_FAILED);
 931                         return -EINTR;
 932                 }
 933
 934                 count = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
 935                 if (count != old_count)
 936                         break;
 937         }
 938
 939         /* firmware is dead */
 940         if (count == old_count)
 941                 return 1;
 942
 943         /* check if we have got newer or different file firmware */
 944         if (adapter->fw) {
 945
 946                 val = qlcnic_get_fw_version(adapter);
 947
 948                 version = QLCNIC_DECODE_VERSION(val);
 949
 950                 major = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR);
 951                 minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR);
 952                 build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB);
 953
 954                 if (version > QLCNIC_VERSION_CODE(major, minor, build))
 955                         return 1;
 956         }
 957
 958         return 0;
 959 }
 960
 961 static const char *fw_name[] = {
 962         QLCNIC_UNIFIED_ROMIMAGE_NAME,
 963         QLCNIC_FLASH_ROMIMAGE_NAME,
 964 };
 965
 966 int
 967 qlcnic_load_firmware(struct qlcnic_adapter *adapter)
 968 {
 969         u64 *ptr64;
 970         u32 i, flashaddr, size;
 971         const struct firmware *fw = adapter->fw;
 972         struct pci_dev *pdev = adapter->pdev;
 973
 974         dev_info(&pdev->dev, "loading firmware from %s\n",
 975                         fw_name[adapter->fw_type]);
 976
 977         if (fw) {
 978                 __le64 data;
 979
 980                 size = (QLCNIC_IMAGE_START - QLCNIC_BOOTLD_START) / 8;
 981
 982                 ptr64 = (u64 *)qlcnic_get_bootld_offs(adapter);
 983                 flashaddr = QLCNIC_BOOTLD_START;
 984
 985                 for (i = 0; i < size; i++) {
 986                         data = cpu_to_le64(ptr64[i]);
 987
 988                         if (qlcnic_pci_mem_write_2M(adapter, flashaddr, data))
 989                                 return -EIO;
 990
 991                         flashaddr += 8;
 992                 }
 993
 994                 size = (__force u32)qlcnic_get_fw_size(adapter) / 8;
 995
 996                 ptr64 = (u64 *)qlcnic_get_fw_offs(adapter);
 997                 flashaddr = QLCNIC_IMAGE_START;
 998
 999                 for (i = 0; i < size; i++) {
1000                         data = cpu_to_le64(ptr64[i]);
1001
1002                         if (qlcnic_pci_mem_write_2M(adapter,
1003                                                 flashaddr, data))
1004                                 return -EIO;
1005
1006                         flashaddr += 8;
1007                 }
1008
1009                 size = (__force u32)qlcnic_get_fw_size(adapter) % 8;
1010                 if (size) {
1011                         data = cpu_to_le64(ptr64[i]);
1012
1013                         if (qlcnic_pci_mem_write_2M(adapter,
1014                                                 flashaddr, data))
1015                                 return -EIO;
1016                 }
1017
1018         } else {
1019                 u64 data;
1020                 u32 hi, lo;
1021
1022                 size = (QLCNIC_IMAGE_START - QLCNIC_BOOTLD_START) / 8;
1023                 flashaddr = QLCNIC_BOOTLD_START;
1024
1025                 for (i = 0; i < size; i++) {
1026                         if (qlcnic_rom_fast_read(adapter,
1027                                         flashaddr, (int *)&lo) != 0)
1028                                 return -EIO;
1029                         if (qlcnic_rom_fast_read(adapter,
1030                                         flashaddr + 4, (int *)&hi) != 0)
1031                                 return -EIO;
1032
1033                         data = (((u64)hi << 32) | lo);
1034
1035                         if (qlcnic_pci_mem_write_2M(adapter,
1036                                                 flashaddr, data))
1037                                 return -EIO;
1038
1039                         flashaddr += 8;
1040                 }
1041         }
1042         msleep(1);
1043
1044         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0x18, 0x1020);
1045         QLCWR32(adapter, QLCNIC_ROMUSB_GLB_SW_RESET, 0x80001e);
1046         return 0;
1047 }
1048
1049 static int
1050 qlcnic_validate_firmware(struct qlcnic_adapter *adapter)
1051 {
1052         __le32 val;
1053         u32 ver, bios, min_size;
1054         struct pci_dev *pdev = adapter->pdev;
1055         const struct firmware *fw = adapter->fw;
1056         u8 fw_type = adapter->fw_type;
1057
1058         if (fw_type == QLCNIC_UNIFIED_ROMIMAGE) {
1059                 if (qlcnic_validate_unified_romimage(adapter))
1060                         return -EINVAL;
1061
1062                 min_size = QLCNIC_UNI_FW_MIN_SIZE;
1063         } else {
1064                 val = cpu_to_le32(*(u32 *)&fw->data[QLCNIC_FW_MAGIC_OFFSET]);
1065                 if ((__force u32)val != QLCNIC_BDINFO_MAGIC)
1066                         return -EINVAL;
1067
1068                 min_size = QLCNIC_FW_MIN_SIZE;
1069         }
1070
1071         if (fw->size < min_size)
1072                 return -EINVAL;
1073
1074         val = qlcnic_get_fw_version(adapter);
1075         ver = QLCNIC_DECODE_VERSION(val);
1076
1077         if (ver < QLCNIC_MIN_FW_VERSION) {
1078                 dev_err(&pdev->dev,
1079                                 "%s: firmware version %d.%d.%d unsupported\n",
1080                 fw_name[fw_type], _major(ver), _minor(ver), _build(ver));
1081                 return -EINVAL;
1082         }
1083
1084         val = qlcnic_get_bios_version(adapter);
1085         qlcnic_rom_fast_read(adapter, QLCNIC_BIOS_VERSION_OFFSET, (int *)&bios);
1086         if ((__force u32)val != bios) {
1087                 dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
1088                                 fw_name[fw_type]);
1089                 return -EINVAL;
1090         }
1091
1092         /* check if flashed firmware is newer */
1093         if (qlcnic_rom_fast_read(adapter,
1094                         QLCNIC_FW_VERSION_OFFSET, (int *)&val))
1095                 return -EIO;
1096
1097         val = QLCNIC_DECODE_VERSION(val);
1098         if (val > ver) {
1099                 dev_info(&pdev->dev, "%s: firmware is older than flash\n",
1100                                 fw_name[fw_type]);
1101                 return -EINVAL;
1102         }
1103
1104         QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
1105         return 0;
1106 }
1107
1108 static void
1109 qlcnic_get_next_fwtype(struct qlcnic_adapter *adapter)
1110 {
1111         u8 fw_type;
1112
1113         switch (adapter->fw_type) {
1114         case QLCNIC_UNKNOWN_ROMIMAGE:
1115                 fw_type = QLCNIC_UNIFIED_ROMIMAGE;
1116                 break;
1117
1118         case QLCNIC_UNIFIED_ROMIMAGE:
1119         default:
1120                 fw_type = QLCNIC_FLASH_ROMIMAGE;
1121                 break;
1122         }
1123
1124         adapter->fw_type = fw_type;
1125 }
1126
1127
1128
1129 void qlcnic_request_firmware(struct qlcnic_adapter *adapter)
1130 {
1131         struct pci_dev *pdev = adapter->pdev;
1132         int rc;
1133
1134         adapter->fw_type = QLCNIC_UNKNOWN_ROMIMAGE;
1135
1136 next:
1137         qlcnic_get_next_fwtype(adapter);
1138
1139         if (adapter->fw_type == QLCNIC_FLASH_ROMIMAGE) {
1140                 adapter->fw = NULL;
1141         } else {
1142                 rc = request_firmware(&adapter->fw,
1143                                 fw_name[adapter->fw_type], &pdev->dev);
1144                 if (rc != 0)
1145                         goto next;
1146
1147                 rc = qlcnic_validate_firmware(adapter);
1148                 if (rc != 0) {
1149                         release_firmware(adapter->fw);
1150                         msleep(1);
1151                         goto next;
1152                 }
1153         }
1154 }
1155
1156
1157 void
1158 qlcnic_release_firmware(struct qlcnic_adapter *adapter)
1159 {
1160         if (adapter->fw)
1161                 release_firmware(adapter->fw);
1162         adapter->fw = NULL;
1163 }
1164
1165 static int qlcnic_cmd_peg_ready(struct qlcnic_adapter *adapter)
1166 {
1167         u32 val;
1168         int retries = 60;
1169
1170         do {
1171                 val = QLCRD32(adapter, CRB_CMDPEG_STATE);
1172
1173                 switch (val) {
1174                 case PHAN_INITIALIZE_COMPLETE:
1175                 case PHAN_INITIALIZE_ACK:
1176                         return 0;
1177                 case PHAN_INITIALIZE_FAILED:
1178                         goto out_err;
1179                 default:
1180                         break;
1181                 }
1182
1183                 msleep(500);
1184
1185         } while (--retries);
1186
1187         QLCWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
1188
1189 out_err:
1190         dev_err(&adapter->pdev->dev, "Command Peg initialization not "
1191                       "complete, state: 0x%x.\n", val);
1192         return -EIO;
1193 }
1194
1195 static int
1196 qlcnic_receive_peg_ready(struct qlcnic_adapter *adapter)
1197 {
1198         u32 val;
1199         int retries = 2000;
1200
1201         do {
1202                 val = QLCRD32(adapter, CRB_RCVPEG_STATE);
1203
1204                 if (val == PHAN_PEG_RCV_INITIALIZED)
1205                         return 0;
1206
1207                 msleep(10);
1208
1209         } while (--retries);
1210
1211         if (!retries) {
1212                 dev_err(&adapter->pdev->dev, "Receive Peg initialization not "
1213                               "complete, state: 0x%x.\n", val);
1214                 return -EIO;
1215         }
1216
1217         return 0;
1218 }
1219
1220 int qlcnic_init_firmware(struct qlcnic_adapter *adapter)
1221 {
1222         int err;
1223
1224         err = qlcnic_cmd_peg_ready(adapter);
1225         if (err)
1226                 return err;
1227
1228         err = qlcnic_receive_peg_ready(adapter);
1229         if (err)
1230                 return err;
1231
1232         QLCWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
1233
1234         return err;
1235 }
1236
1237 static void
1238 qlcnic_handle_linkevent(struct qlcnic_adapter *adapter,
1239                                 struct qlcnic_fw_msg *msg)
1240 {
1241         u32 cable_OUI;
1242         u16 cable_len;
1243         u16 link_speed;
1244         u8  link_status, module, duplex, autoneg;
1245         struct net_device *netdev = adapter->netdev;
1246
1247         adapter->has_link_events = 1;
1248
1249         cable_OUI = msg->body[1] & 0xffffffff;
1250         cable_len = (msg->body[1] >> 32) & 0xffff;
1251         link_speed = (msg->body[1] >> 48) & 0xffff;
1252
1253         link_status = msg->body[2] & 0xff;
1254         duplex = (msg->body[2] >> 16) & 0xff;
1255         autoneg = (msg->body[2] >> 24) & 0xff;
1256
1257         module = (msg->body[2] >> 8) & 0xff;
1258         if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE)
1259                 dev_info(&netdev->dev, "unsupported cable: OUI 0x%x, "
1260                                 "length %d\n", cable_OUI, cable_len);
1261         else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN)
1262                 dev_info(&netdev->dev, "unsupported cable length %d\n",
1263                                 cable_len);
1264
1265         qlcnic_advert_link_change(adapter, link_status);
1266
1267         if (duplex == LINKEVENT_FULL_DUPLEX)
1268                 adapter->link_duplex = DUPLEX_FULL;
1269         else
1270                 adapter->link_duplex = DUPLEX_HALF;
1271
1272         adapter->module_type = module;
1273         adapter->link_autoneg = autoneg;
1274         adapter->link_speed = link_speed;
1275 }
1276
1277 static void
1278 qlcnic_handle_fw_message(int desc_cnt, int index,
1279                 struct qlcnic_host_sds_ring *sds_ring)
1280 {
1281         struct qlcnic_fw_msg msg;
1282         struct status_desc *desc;
1283         int i = 0, opcode;
1284
1285         while (desc_cnt > 0 && i < 8) {
1286                 desc = &sds_ring->desc_head[index];
1287                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1288                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1289
1290                 index = get_next_index(index, sds_ring->num_desc);
1291                 desc_cnt--;
1292         }
1293
1294         opcode = qlcnic_get_nic_msg_opcode(msg.body[0]);
1295         switch (opcode) {
1296         case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1297                 qlcnic_handle_linkevent(sds_ring->adapter, &msg);
1298                 break;
1299         default:
1300                 break;
1301         }
1302 }
1303
1304 static int
1305 qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter,
1306                 struct qlcnic_host_rds_ring *rds_ring,
1307                 struct qlcnic_rx_buffer *buffer)
1308 {
1309         struct sk_buff *skb;
1310         dma_addr_t dma;
1311         struct pci_dev *pdev = adapter->pdev;
1312
1313         skb = dev_alloc_skb(rds_ring->skb_size);
1314         if (!skb) {
1315                 adapter->stats.skb_alloc_failure++;
1316                 return -ENOMEM;
1317         }
1318
1319         skb_reserve(skb, NET_IP_ALIGN);
1320
1321         dma = pci_map_single(pdev, skb->data,
1322                         rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1323
1324         if (pci_dma_mapping_error(pdev, dma)) {
1325                 adapter->stats.rx_dma_map_error++;
1326                 dev_kfree_skb_any(skb);
1327                 return -ENOMEM;
1328         }
1329
1330         buffer->skb = skb;
1331         buffer->dma = dma;
1332
1333         return 0;
1334 }
1335
1336 static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter,
1337                 struct qlcnic_host_rds_ring *rds_ring, u16 index, u16 cksum)
1338 {
1339         struct qlcnic_rx_buffer *buffer;
1340         struct sk_buff *skb;
1341
1342         buffer = &rds_ring->rx_buf_arr[index];
1343
1344         if (unlikely(buffer->skb == NULL)) {
1345                 WARN_ON(1);
1346                 return NULL;
1347         }
1348
1349         pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
1350                         PCI_DMA_FROMDEVICE);
1351
1352         skb = buffer->skb;
1353
1354         if (likely(adapter->rx_csum && cksum == STATUS_CKSUM_OK)) {
1355                 adapter->stats.csummed++;
1356                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1357         } else {
1358                 skb->ip_summed = CHECKSUM_NONE;
1359         }
1360
1361         skb->dev = adapter->netdev;
1362
1363         buffer->skb = NULL;
1364
1365         return skb;
1366 }
1367
1368 static struct qlcnic_rx_buffer *
1369 qlcnic_process_rcv(struct qlcnic_adapter *adapter,
1370                 struct qlcnic_host_sds_ring *sds_ring,
1371                 int ring, u64 sts_data0)
1372 {
1373         struct net_device *netdev = adapter->netdev;
1374         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
1375         struct qlcnic_rx_buffer *buffer;
1376         struct sk_buff *skb;
1377         struct qlcnic_host_rds_ring *rds_ring;
1378         int index, length, cksum, pkt_offset;
1379
1380         if (unlikely(ring >= adapter->max_rds_rings))
1381                 return NULL;
1382
1383         rds_ring = &recv_ctx->rds_rings[ring];
1384
1385         index = qlcnic_get_sts_refhandle(sts_data0);
1386         if (unlikely(index >= rds_ring->num_desc))
1387                 return NULL;
1388
1389         buffer = &rds_ring->rx_buf_arr[index];
1390
1391         length = qlcnic_get_sts_totallength(sts_data0);
1392         cksum  = qlcnic_get_sts_status(sts_data0);
1393         pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1394
1395         skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1396         if (!skb)
1397                 return buffer;
1398
1399         if (length > rds_ring->skb_size)
1400                 skb_put(skb, rds_ring->skb_size);
1401         else
1402                 skb_put(skb, length);
1403
1404         if (pkt_offset)
1405                 skb_pull(skb, pkt_offset);
1406
1407         skb->protocol = eth_type_trans(skb, netdev);
1408
1409         napi_gro_receive(&sds_ring->napi, skb);
1410
1411         adapter->stats.rx_pkts++;
1412         adapter->stats.rxbytes += length;
1413
1414         return buffer;
1415 }
1416
1417 #define QLC_TCP_HDR_SIZE            20
1418 #define QLC_TCP_TS_OPTION_SIZE      12
1419 #define QLC_TCP_TS_HDR_SIZE         (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE)
1420
1421 static struct qlcnic_rx_buffer *
1422 qlcnic_process_lro(struct qlcnic_adapter *adapter,
1423                 struct qlcnic_host_sds_ring *sds_ring,
1424                 int ring, u64 sts_data0, u64 sts_data1)
1425 {
1426         struct net_device *netdev = adapter->netdev;
1427         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
1428         struct qlcnic_rx_buffer *buffer;
1429         struct sk_buff *skb;
1430         struct qlcnic_host_rds_ring *rds_ring;
1431         struct iphdr *iph;
1432         struct tcphdr *th;
1433         bool push, timestamp;
1434         int l2_hdr_offset, l4_hdr_offset;
1435         int index;
1436         u16 lro_length, length, data_offset;
1437         u32 seq_number;
1438
1439         if (unlikely(ring > adapter->max_rds_rings))
1440                 return NULL;
1441
1442         rds_ring = &recv_ctx->rds_rings[ring];
1443
1444         index = qlcnic_get_lro_sts_refhandle(sts_data0);
1445         if (unlikely(index > rds_ring->num_desc))
1446                 return NULL;
1447
1448         buffer = &rds_ring->rx_buf_arr[index];
1449
1450         timestamp = qlcnic_get_lro_sts_timestamp(sts_data0);
1451         lro_length = qlcnic_get_lro_sts_length(sts_data0);
1452         l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0);
1453         l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0);
1454         push = qlcnic_get_lro_sts_push_flag(sts_data0);
1455         seq_number = qlcnic_get_lro_sts_seq_number(sts_data1);
1456
1457         skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1458         if (!skb)
1459                 return buffer;
1460
1461         if (timestamp)
1462                 data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE;
1463         else
1464                 data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE;
1465
1466         skb_put(skb, lro_length + data_offset);
1467
1468         skb_pull(skb, l2_hdr_offset);
1469         skb->protocol = eth_type_trans(skb, netdev);
1470
1471         iph = (struct iphdr *)skb->data;
1472         th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
1473
1474         length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1475         iph->tot_len = htons(length);
1476         iph->check = 0;
1477         iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
1478         th->psh = push;
1479         th->seq = htonl(seq_number);
1480
1481         length = skb->len;
1482
1483         netif_receive_skb(skb);
1484
1485         adapter->stats.lro_pkts++;
1486         adapter->stats.lrobytes += length;
1487
1488         return buffer;
1489 }
1490
1491 int
1492 qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max)
1493 {
1494         struct qlcnic_adapter *adapter = sds_ring->adapter;
1495         struct list_head *cur;
1496         struct status_desc *desc;
1497         struct qlcnic_rx_buffer *rxbuf;
1498         u64 sts_data0, sts_data1;
1499
1500         int count = 0;
1501         int opcode, ring, desc_cnt;
1502         u32 consumer = sds_ring->consumer;
1503
1504         while (count < max) {
1505                 desc = &sds_ring->desc_head[consumer];
1506                 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1507
1508                 if (!(sts_data0 & STATUS_OWNER_HOST))
1509                         break;
1510
1511                 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1512                 opcode = qlcnic_get_sts_opcode(sts_data0);
1513
1514                 switch (opcode) {
1515                 case QLCNIC_RXPKT_DESC:
1516                 case QLCNIC_OLD_RXPKT_DESC:
1517                 case QLCNIC_SYN_OFFLOAD:
1518                         ring = qlcnic_get_sts_type(sts_data0);
1519                         rxbuf = qlcnic_process_rcv(adapter, sds_ring,
1520                                         ring, sts_data0);
1521                         break;
1522                 case QLCNIC_LRO_DESC:
1523                         ring = qlcnic_get_lro_sts_type(sts_data0);
1524                         sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1525                         rxbuf = qlcnic_process_lro(adapter, sds_ring,
1526                                         ring, sts_data0, sts_data1);
1527                         break;
1528                 case QLCNIC_RESPONSE_DESC:
1529                         qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1530                 default:
1531                         goto skip;
1532                 }
1533
1534                 WARN_ON(desc_cnt > 1);
1535
1536                 if (likely(rxbuf))
1537                         list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1538                 else
1539                         adapter->stats.null_rxbuf++;
1540
1541 skip:
1542                 for (; desc_cnt > 0; desc_cnt--) {
1543                         desc = &sds_ring->desc_head[consumer];
1544                         desc->status_desc_data[0] =
1545                                 cpu_to_le64(STATUS_OWNER_PHANTOM);
1546                         consumer = get_next_index(consumer, sds_ring->num_desc);
1547                 }
1548                 count++;
1549         }
1550
1551         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1552                 struct qlcnic_host_rds_ring *rds_ring =
1553                         &adapter->recv_ctx.rds_rings[ring];
1554
1555                 if (!list_empty(&sds_ring->free_list[ring])) {
1556                         list_for_each(cur, &sds_ring->free_list[ring]) {
1557                                 rxbuf = list_entry(cur,
1558                                                 struct qlcnic_rx_buffer, list);
1559                                 qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf);
1560                         }
1561                         spin_lock(&rds_ring->lock);
1562                         list_splice_tail_init(&sds_ring->free_list[ring],
1563                                                 &rds_ring->free_list);
1564                         spin_unlock(&rds_ring->lock);
1565                 }
1566
1567                 qlcnic_post_rx_buffers_nodb(adapter, rds_ring);
1568         }
1569
1570         if (count) {
1571                 sds_ring->consumer = consumer;
1572                 writel(consumer, sds_ring->crb_sts_consumer);
1573         }
1574
1575         return count;
1576 }
1577
1578 void
1579 qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter, u32 ringid,
1580         struct qlcnic_host_rds_ring *rds_ring)
1581 {
1582         struct rcv_desc *pdesc;
1583         struct qlcnic_rx_buffer *buffer;
1584         int producer, count = 0;
1585         struct list_head *head;
1586
1587         spin_lock(&rds_ring->lock);
1588
1589         producer = rds_ring->producer;
1590
1591         head = &rds_ring->free_list;
1592         while (!list_empty(head)) {
1593
1594                 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1595
1596                 if (!buffer->skb) {
1597                         if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1598                                 break;
1599                 }
1600
1601                 count++;
1602                 list_del(&buffer->list);
1603
1604                 /* make a rcv descriptor  */
1605                 pdesc = &rds_ring->desc_head[producer];
1606                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1607                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1608                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1609
1610                 producer = get_next_index(producer, rds_ring->num_desc);
1611         }
1612
1613         if (count) {
1614                 rds_ring->producer = producer;
1615                 writel((producer-1) & (rds_ring->num_desc-1),
1616                                 rds_ring->crb_rcv_producer);
1617         }
1618         spin_unlock(&rds_ring->lock);
1619 }
1620
1621 static void
1622 qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
1623                 struct qlcnic_host_rds_ring *rds_ring)
1624 {
1625         struct rcv_desc *pdesc;
1626         struct qlcnic_rx_buffer *buffer;
1627         int producer, count = 0;
1628         struct list_head *head;
1629
1630         if (!spin_trylock(&rds_ring->lock))
1631                 return;
1632
1633         producer = rds_ring->producer;
1634
1635         head = &rds_ring->free_list;
1636         while (!list_empty(head)) {
1637
1638                 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1639
1640                 if (!buffer->skb) {
1641                         if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1642                                 break;
1643                 }
1644
1645                 count++;
1646                 list_del(&buffer->list);
1647
1648                 /* make a rcv descriptor  */
1649                 pdesc = &rds_ring->desc_head[producer];
1650                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1651                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1652                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1653
1654                 producer = get_next_index(producer, rds_ring->num_desc);
1655         }
1656
1657         if (count) {
1658                 rds_ring->producer = producer;
1659                 writel((producer - 1) & (rds_ring->num_desc - 1),
1660                                 rds_ring->crb_rcv_producer);
1661         }
1662         spin_unlock(&rds_ring->lock);
1663 }
1664
1665 static struct qlcnic_rx_buffer *
1666 qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter,
1667                 struct qlcnic_host_sds_ring *sds_ring,
1668                 int ring, u64 sts_data0)
1669 {
1670         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
1671         struct qlcnic_rx_buffer *buffer;
1672         struct sk_buff *skb;
1673         struct qlcnic_host_rds_ring *rds_ring;
1674         int index, length, cksum, pkt_offset;
1675
1676         if (unlikely(ring >= adapter->max_rds_rings))
1677                 return NULL;
1678
1679         rds_ring = &recv_ctx->rds_rings[ring];
1680
1681         index = qlcnic_get_sts_refhandle(sts_data0);
1682         if (unlikely(index >= rds_ring->num_desc))
1683                 return NULL;
1684
1685         buffer = &rds_ring->rx_buf_arr[index];
1686
1687         length = qlcnic_get_sts_totallength(sts_data0);
1688         cksum  = qlcnic_get_sts_status(sts_data0);
1689         pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1690
1691         skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1692         if (!skb)
1693                 return buffer;
1694
1695         skb_put(skb, rds_ring->skb_size);
1696
1697         if (pkt_offset)
1698                 skb_pull(skb, pkt_offset);
1699
1700         if (!qlcnic_check_loopback_buff(skb->data))
1701                 adapter->diag_cnt++;
1702
1703         dev_kfree_skb_any(skb);
1704         adapter->stats.rx_pkts++;
1705         adapter->stats.rxbytes += length;
1706
1707         return buffer;
1708 }
1709
1710 void
1711 qlcnic_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring)
1712 {
1713         struct qlcnic_adapter *adapter = sds_ring->adapter;
1714         struct status_desc *desc;
1715         struct qlcnic_rx_buffer *rxbuf;
1716         u64 sts_data0;
1717
1718         int opcode, ring, desc_cnt;
1719         u32 consumer = sds_ring->consumer;
1720
1721         desc = &sds_ring->desc_head[consumer];
1722         sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1723
1724         if (!(sts_data0 & STATUS_OWNER_HOST))
1725                 return;
1726
1727         desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1728         opcode = qlcnic_get_sts_opcode(sts_data0);
1729
1730         ring = qlcnic_get_sts_type(sts_data0);
1731         rxbuf = qlcnic_process_rcv_diag(adapter, sds_ring,
1732                                         ring, sts_data0);
1733
1734         desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
1735         consumer = get_next_index(consumer, sds_ring->num_desc);
1736
1737         sds_ring->consumer = consumer;
1738         writel(consumer, sds_ring->crb_sts_consumer);
1739 }
1740
1741 void
1742 qlcnic_fetch_mac(struct qlcnic_adapter *adapter, u32 off1, u32 off2,
1743                         u8 alt_mac, u8 *mac)
1744 {
1745         u32 mac_low, mac_high;
1746         int i;
1747
1748         mac_low = QLCRD32(adapter, off1);
1749         mac_high = QLCRD32(adapter, off2);
1750
1751         if (alt_mac) {
1752                 mac_low |= (mac_low >> 16) | (mac_high << 16);
1753                 mac_high >>= 16;
1754         }
1755
1756         for (i = 0; i < 2; i++)
1757                 mac[i] = (u8)(mac_high >> ((1 - i) * 8));
1758         for (i = 2; i < 6; i++)
1759                 mac[i] = (u8)(mac_low >> ((5 - i) * 8));
1760 }