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