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