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 static int
 533 qlcnic_has_mn(struct qlcnic_adapter *adapter)
 534 {
 535         u32 capability, flashed_ver;
 536         capability = 0;
 537
 538         qlcnic_rom_fast_read(adapter,
 539                         QLCNIC_FW_VERSION_OFFSET, (int *)&flashed_ver);
 540         flashed_ver = QLCNIC_DECODE_VERSION(flashed_ver);
 541
 542         if (flashed_ver >= QLCNIC_VERSION_CODE(4, 0, 220)) {
 543
 544                 capability = QLCRD32(adapter, QLCNIC_PEG_TUNE_CAPABILITY);
 545                 if (capability & QLCNIC_PEG_TUNE_MN_PRESENT)
 546                         return 1;
 547         }
 548         return 0;
 549 }
 550
 551 static
 552 struct uni_table_desc *qlcnic_get_table_desc(const u8 *unirom, int section)
 553 {
 554         u32 i;
 555         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 556         __le32 entries = cpu_to_le32(directory->num_entries);
 557
 558         for (i = 0; i < entries; i++) {
 559
 560                 __le32 offs = cpu_to_le32(directory->findex) +
 561                                 (i * cpu_to_le32(directory->entry_size));
 562                 __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
 563
 564                 if (tab_type == section)
 565                         return (struct uni_table_desc *) &unirom[offs];
 566         }
 567
 568         return NULL;
 569 }
 570
 571 static int
 572 qlcnic_set_product_offs(struct qlcnic_adapter *adapter)
 573 {
 574         struct uni_table_desc *ptab_descr;
 575         const u8 *unirom = adapter->fw->data;
 576         u32 i;
 577         __le32 entries;
 578         int mn_present = qlcnic_has_mn(adapter);
 579
 580         ptab_descr = qlcnic_get_table_desc(unirom,
 581                                 QLCNIC_UNI_DIR_SECT_PRODUCT_TBL);
 582         if (ptab_descr == NULL)
 583                 return -1;
 584
 585         entries = cpu_to_le32(ptab_descr->num_entries);
 586 nomn:
 587         for (i = 0; i < entries; i++) {
 588
 589                 __le32 flags, file_chiprev, offs;
 590                 u8 chiprev = adapter->ahw.revision_id;
 591                 u32 flagbit;
 592
 593                 offs = cpu_to_le32(ptab_descr->findex) +
 594                                 (i * cpu_to_le32(ptab_descr->entry_size));
 595                 flags = cpu_to_le32(*((int *)&unirom[offs] +
 596                                                 QLCNIC_UNI_FLAGS_OFF));
 597                 file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
 598                                                 QLCNIC_UNI_CHIP_REV_OFF));
 599
 600                 flagbit = mn_present ? 1 : 2;
 601
 602                 if ((chiprev == file_chiprev) &&
 603                                         ((1ULL << flagbit) & flags)) {
 604                         adapter->file_prd_off = offs;
 605                         return 0;
 606                 }
 607         }
 608         if (mn_present) {
 609                 mn_present = 0;
 610                 goto nomn;
 611         }
 612         return -1;
 613 }
 614
 615 static
 616 struct uni_data_desc *qlcnic_get_data_desc(struct qlcnic_adapter *adapter,
 617                         u32 section, u32 idx_offset)
 618 {
 619         const u8 *unirom = adapter->fw->data;
 620         int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 621                                                                 idx_offset));
 622         struct uni_table_desc *tab_desc;
 623         __le32 offs;
 624
 625         tab_desc = qlcnic_get_table_desc(unirom, section);
 626
 627         if (tab_desc == NULL)
 628                 return NULL;
 629
 630         offs = cpu_to_le32(tab_desc->findex) +
 631                         (cpu_to_le32(tab_desc->entry_size) * idx);
 632
 633         return (struct uni_data_desc *)&unirom[offs];
 634 }
 635
 636 static u8 *
 637 qlcnic_get_bootld_offs(struct qlcnic_adapter *adapter)
 638 {
 639         u32 offs = QLCNIC_BOOTLD_START;
 640
 641         if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
 642                 offs = cpu_to_le32((qlcnic_get_data_desc(adapter,
 643                                         QLCNIC_UNI_DIR_SECT_BOOTLD,
 644                                         QLCNIC_UNI_BOOTLD_IDX_OFF))->findex);
 645
 646         return (u8 *)&adapter->fw->data[offs];
 647 }
 648
 649 static u8 *
 650 qlcnic_get_fw_offs(struct qlcnic_adapter *adapter)
 651 {
 652         u32 offs = QLCNIC_IMAGE_START;
 653
 654         if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
 655                 offs = cpu_to_le32((qlcnic_get_data_desc(adapter,
 656                                         QLCNIC_UNI_DIR_SECT_FW,
 657                                         QLCNIC_UNI_FIRMWARE_IDX_OFF))->findex);
 658
 659         return (u8 *)&adapter->fw->data[offs];
 660 }
 661
 662 static __le32
 663 qlcnic_get_fw_size(struct qlcnic_adapter *adapter)
 664 {
 665         if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE)
 666                 return cpu_to_le32((qlcnic_get_data_desc(adapter,
 667                                         QLCNIC_UNI_DIR_SECT_FW,
 668                                         QLCNIC_UNI_FIRMWARE_IDX_OFF))->size);
 669         else
 670                 return cpu_to_le32(
 671                         *(u32 *)&adapter->fw->data[QLCNIC_FW_SIZE_OFFSET]);
 672 }
 673
 674 static __le32
 675 qlcnic_get_fw_version(struct qlcnic_adapter *adapter)
 676 {
 677         struct uni_data_desc *fw_data_desc;
 678         const struct firmware *fw = adapter->fw;
 679         __le32 major, minor, sub;
 680         const u8 *ver_str;
 681         int i, ret;
 682
 683         if (adapter->fw_type != QLCNIC_UNIFIED_ROMIMAGE)
 684                 return cpu_to_le32(*(u32 *)&fw->data[QLCNIC_FW_VERSION_OFFSET]);
 685
 686         fw_data_desc = qlcnic_get_data_desc(adapter, QLCNIC_UNI_DIR_SECT_FW,
 687                         QLCNIC_UNI_FIRMWARE_IDX_OFF);
 688         ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
 689                 cpu_to_le32(fw_data_desc->size) - 17;
 690
 691         for (i = 0; i < 12; i++) {
 692                 if (!strncmp(&ver_str[i], "REV=", 4)) {
 693                         ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
 694                                         &major, &minor, &sub);
 695                         if (ret != 3)
 696                                 return 0;
 697                         else
 698                                 return major + (minor << 8) + (sub << 16);
 699                 }
 700         }
 701
 702         return 0;
 703 }
 704
 705 static __le32
 706 qlcnic_get_bios_version(struct qlcnic_adapter *adapter)
 707 {
 708         const struct firmware *fw = adapter->fw;
 709         __le32 bios_ver, prd_off = adapter->file_prd_off;
 710
 711         if (adapter->fw_type != QLCNIC_UNIFIED_ROMIMAGE)
 712                 return cpu_to_le32(
 713                         *(u32 *)&fw->data[QLCNIC_BIOS_VERSION_OFFSET]);
 714
 715         bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
 716                                 + QLCNIC_UNI_BIOS_VERSION_OFF));
 717
 718         return (bios_ver << 24) + ((bios_ver >> 8) & 0xff00) + (bios_ver >> 24);
 719 }
 720
 721 int
 722 qlcnic_need_fw_reset(struct qlcnic_adapter *adapter)
 723 {
 724         u32 count, old_count;
 725         u32 val, version, major, minor, build;
 726         int i, timeout;
 727
 728         if (adapter->need_fw_reset)
 729                 return 1;
 730
 731         /* last attempt had failed */
 732         if (QLCRD32(adapter, CRB_CMDPEG_STATE) == PHAN_INITIALIZE_FAILED)
 733                 return 1;
 734
 735         old_count = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
 736
 737         for (i = 0; i < 10; i++) {
 738
 739                 timeout = msleep_interruptible(200);
 740                 if (timeout) {
 741                         QLCWR32(adapter, CRB_CMDPEG_STATE,
 742                                         PHAN_INITIALIZE_FAILED);
 743                         return -EINTR;
 744                 }
 745
 746                 count = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
 747                 if (count != old_count)
 748                         break;
 749         }
 750
 751         /* firmware is dead */
 752         if (count == old_count)
 753                 return 1;
 754
 755         /* check if we have got newer or different file firmware */
 756         if (adapter->fw) {
 757
 758                 val = qlcnic_get_fw_version(adapter);
 759
 760                 version = QLCNIC_DECODE_VERSION(val);
 761
 762                 major = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR);
 763                 minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR);
 764                 build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB);
 765
 766                 if (version > QLCNIC_VERSION_CODE(major, minor, build))
 767                         return 1;
 768         }
 769
 770         return 0;
 771 }
 772
 773 static const char *fw_name[] = {
 774         QLCNIC_UNIFIED_ROMIMAGE_NAME,
 775         QLCNIC_FLASH_ROMIMAGE_NAME,
 776 };
 777
 778 int
 779 qlcnic_load_firmware(struct qlcnic_adapter *adapter)
 780 {
 781         u64 *ptr64;
 782         u32 i, flashaddr, size;
 783         const struct firmware *fw = adapter->fw;
 784         struct pci_dev *pdev = adapter->pdev;
 785
 786         dev_info(&pdev->dev, "loading firmware from %s\n",
 787                         fw_name[adapter->fw_type]);
 788
 789         if (fw) {
 790                 __le64 data;
 791
 792                 size = (QLCNIC_IMAGE_START - QLCNIC_BOOTLD_START) / 8;
 793
 794                 ptr64 = (u64 *)qlcnic_get_bootld_offs(adapter);
 795                 flashaddr = QLCNIC_BOOTLD_START;
 796
 797                 for (i = 0; i < size; i++) {
 798                         data = cpu_to_le64(ptr64[i]);
 799
 800                         if (qlcnic_pci_mem_write_2M(adapter, flashaddr, data))
 801                                 return -EIO;
 802
 803                         flashaddr += 8;
 804                 }
 805
 806                 size = (__force u32)qlcnic_get_fw_size(adapter) / 8;
 807
 808                 ptr64 = (u64 *)qlcnic_get_fw_offs(adapter);
 809                 flashaddr = QLCNIC_IMAGE_START;
 810
 811                 for (i = 0; i < size; i++) {
 812                         data = cpu_to_le64(ptr64[i]);
 813
 814                         if (qlcnic_pci_mem_write_2M(adapter,
 815                                                 flashaddr, data))
 816                                 return -EIO;
 817
 818                         flashaddr += 8;
 819                 }
 820         } else {
 821                 u64 data;
 822                 u32 hi, lo;
 823
 824                 size = (QLCNIC_IMAGE_START - QLCNIC_BOOTLD_START) / 8;
 825                 flashaddr = QLCNIC_BOOTLD_START;
 826
 827                 for (i = 0; i < size; i++) {
 828                         if (qlcnic_rom_fast_read(adapter,
 829                                         flashaddr, (int *)&lo) != 0)
 830                                 return -EIO;
 831                         if (qlcnic_rom_fast_read(adapter,
 832                                         flashaddr + 4, (int *)&hi) != 0)
 833                                 return -EIO;
 834
 835                         data = (((u64)hi << 32) | lo);
 836
 837                         if (qlcnic_pci_mem_write_2M(adapter,
 838                                                 flashaddr, data))
 839                                 return -EIO;
 840
 841                         flashaddr += 8;
 842                 }
 843         }
 844         msleep(1);
 845
 846         QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0x18, 0x1020);
 847         QLCWR32(adapter, QLCNIC_ROMUSB_GLB_SW_RESET, 0x80001e);
 848         return 0;
 849 }
 850
 851 static int
 852 qlcnic_validate_firmware(struct qlcnic_adapter *adapter)
 853 {
 854         __le32 val;
 855         u32 ver, min_ver, bios, min_size;
 856         struct pci_dev *pdev = adapter->pdev;
 857         const struct firmware *fw = adapter->fw;
 858         u8 fw_type = adapter->fw_type;
 859
 860         if (fw_type == QLCNIC_UNIFIED_ROMIMAGE) {
 861                 if (qlcnic_set_product_offs(adapter))
 862                         return -EINVAL;
 863
 864                 min_size = QLCNIC_UNI_FW_MIN_SIZE;
 865         } else {
 866                 val = cpu_to_le32(*(u32 *)&fw->data[QLCNIC_FW_MAGIC_OFFSET]);
 867                 if ((__force u32)val != QLCNIC_BDINFO_MAGIC)
 868                         return -EINVAL;
 869
 870                 min_size = QLCNIC_FW_MIN_SIZE;
 871         }
 872
 873         if (fw->size < min_size)
 874                 return -EINVAL;
 875
 876         val = qlcnic_get_fw_version(adapter);
 877
 878         min_ver = QLCNIC_VERSION_CODE(4, 0, 216);
 879
 880         ver = QLCNIC_DECODE_VERSION(val);
 881
 882         if ((_major(ver) > _QLCNIC_LINUX_MAJOR) || (ver < min_ver)) {
 883                 dev_err(&pdev->dev,
 884                                 "%s: firmware version %d.%d.%d unsupported\n",
 885                 fw_name[fw_type], _major(ver), _minor(ver), _build(ver));
 886                 return -EINVAL;
 887         }
 888
 889         val = qlcnic_get_bios_version(adapter);
 890         qlcnic_rom_fast_read(adapter, QLCNIC_BIOS_VERSION_OFFSET, (int *)&bios);
 891         if ((__force u32)val != bios) {
 892                 dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
 893                                 fw_name[fw_type]);
 894                 return -EINVAL;
 895         }
 896
 897         /* check if flashed firmware is newer */
 898         if (qlcnic_rom_fast_read(adapter,
 899                         QLCNIC_FW_VERSION_OFFSET, (int *)&val))
 900                 return -EIO;
 901
 902         val = QLCNIC_DECODE_VERSION(val);
 903         if (val > ver) {
 904                 dev_info(&pdev->dev, "%s: firmware is older than flash\n",
 905                                 fw_name[fw_type]);
 906                 return -EINVAL;
 907         }
 908
 909         QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
 910         return 0;
 911 }
 912
 913 static void
 914 qlcnic_get_next_fwtype(struct qlcnic_adapter *adapter)
 915 {
 916         u8 fw_type;
 917
 918         switch (adapter->fw_type) {
 919         case QLCNIC_UNKNOWN_ROMIMAGE:
 920                 fw_type = QLCNIC_UNIFIED_ROMIMAGE;
 921                 break;
 922
 923         case QLCNIC_UNIFIED_ROMIMAGE:
 924         default:
 925                 fw_type = QLCNIC_FLASH_ROMIMAGE;
 926                 break;
 927         }
 928
 929         adapter->fw_type = fw_type;
 930 }
 931
 932
 933
 934 void qlcnic_request_firmware(struct qlcnic_adapter *adapter)
 935 {
 936         struct pci_dev *pdev = adapter->pdev;
 937         int rc;
 938
 939         adapter->fw_type = QLCNIC_UNKNOWN_ROMIMAGE;
 940
 941 next:
 942         qlcnic_get_next_fwtype(adapter);
 943
 944         if (adapter->fw_type == QLCNIC_FLASH_ROMIMAGE) {
 945                 adapter->fw = NULL;
 946         } else {
 947                 rc = request_firmware(&adapter->fw,
 948                                 fw_name[adapter->fw_type], &pdev->dev);
 949                 if (rc != 0)
 950                         goto next;
 951
 952                 rc = qlcnic_validate_firmware(adapter);
 953                 if (rc != 0) {
 954                         release_firmware(adapter->fw);
 955                         msleep(1);
 956                         goto next;
 957                 }
 958         }
 959 }
 960
 961
 962 void
 963 qlcnic_release_firmware(struct qlcnic_adapter *adapter)
 964 {
 965         if (adapter->fw)
 966                 release_firmware(adapter->fw);
 967         adapter->fw = NULL;
 968 }
 969
 970 int qlcnic_phantom_init(struct qlcnic_adapter *adapter)
 971 {
 972         u32 val;
 973         int retries = 60;
 974
 975         do {
 976                 val = QLCRD32(adapter, CRB_CMDPEG_STATE);
 977
 978                 switch (val) {
 979                 case PHAN_INITIALIZE_COMPLETE:
 980                 case PHAN_INITIALIZE_ACK:
 981                         return 0;
 982                 case PHAN_INITIALIZE_FAILED:
 983                         goto out_err;
 984                 default:
 985                         break;
 986                 }
 987
 988                 msleep(500);
 989
 990         } while (--retries);
 991
 992         QLCWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
 993
 994 out_err:
 995         dev_err(&adapter->pdev->dev, "firmware init failed\n");
 996         return -EIO;
 997 }
 998
 999 static int
1000 qlcnic_receive_peg_ready(struct qlcnic_adapter *adapter)
1001 {
1002         u32 val;
1003         int retries = 2000;
1004
1005         do {
1006                 val = QLCRD32(adapter, CRB_RCVPEG_STATE);
1007
1008                 if (val == PHAN_PEG_RCV_INITIALIZED)
1009                         return 0;
1010
1011                 msleep(10);
1012
1013         } while (--retries);
1014
1015         if (!retries) {
1016                 dev_err(&adapter->pdev->dev, "Receive Peg initialization not "
1017                               "complete, state: 0x%x.\n", val);
1018                 return -EIO;
1019         }
1020
1021         return 0;
1022 }
1023
1024 int qlcnic_init_firmware(struct qlcnic_adapter *adapter)
1025 {
1026         int err;
1027
1028         err = qlcnic_receive_peg_ready(adapter);
1029         if (err)
1030                 return err;
1031
1032         QLCWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
1033         QLCWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
1034         QLCWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
1035         QLCWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
1036
1037         return err;
1038 }
1039
1040 static void
1041 qlcnic_handle_linkevent(struct qlcnic_adapter *adapter,
1042                                 struct qlcnic_fw_msg *msg)
1043 {
1044         u32 cable_OUI;
1045         u16 cable_len;
1046         u16 link_speed;
1047         u8  link_status, module, duplex, autoneg;
1048         struct net_device *netdev = adapter->netdev;
1049
1050         adapter->has_link_events = 1;
1051
1052         cable_OUI = msg->body[1] & 0xffffffff;
1053         cable_len = (msg->body[1] >> 32) & 0xffff;
1054         link_speed = (msg->body[1] >> 48) & 0xffff;
1055
1056         link_status = msg->body[2] & 0xff;
1057         duplex = (msg->body[2] >> 16) & 0xff;
1058         autoneg = (msg->body[2] >> 24) & 0xff;
1059
1060         module = (msg->body[2] >> 8) & 0xff;
1061         if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE)
1062                 dev_info(&netdev->dev, "unsupported cable: OUI 0x%x, "
1063                                 "length %d\n", cable_OUI, cable_len);
1064         else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN)
1065                 dev_info(&netdev->dev, "unsupported cable length %d\n",
1066                                 cable_len);
1067
1068         qlcnic_advert_link_change(adapter, link_status);
1069
1070         if (duplex == LINKEVENT_FULL_DUPLEX)
1071                 adapter->link_duplex = DUPLEX_FULL;
1072         else
1073                 adapter->link_duplex = DUPLEX_HALF;
1074
1075         adapter->module_type = module;
1076         adapter->link_autoneg = autoneg;
1077         adapter->link_speed = link_speed;
1078 }
1079
1080 static void
1081 qlcnic_handle_fw_message(int desc_cnt, int index,
1082                 struct qlcnic_host_sds_ring *sds_ring)
1083 {
1084         struct qlcnic_fw_msg msg;
1085         struct status_desc *desc;
1086         int i = 0, opcode;
1087
1088         while (desc_cnt > 0 && i < 8) {
1089                 desc = &sds_ring->desc_head[index];
1090                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1091                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1092
1093                 index = get_next_index(index, sds_ring->num_desc);
1094                 desc_cnt--;
1095         }
1096
1097         opcode = qlcnic_get_nic_msg_opcode(msg.body[0]);
1098         switch (opcode) {
1099         case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1100                 qlcnic_handle_linkevent(sds_ring->adapter, &msg);
1101                 break;
1102         default:
1103                 break;
1104         }
1105 }
1106
1107 static int
1108 qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter,
1109                 struct qlcnic_host_rds_ring *rds_ring,
1110                 struct qlcnic_rx_buffer *buffer)
1111 {
1112         struct sk_buff *skb;
1113         dma_addr_t dma;
1114         struct pci_dev *pdev = adapter->pdev;
1115
1116         buffer->skb = dev_alloc_skb(rds_ring->skb_size);
1117         if (!buffer->skb)
1118                 return -ENOMEM;
1119
1120         skb = buffer->skb;
1121
1122         if (!adapter->ahw.cut_through)
1123                 skb_reserve(skb, 2);
1124
1125         dma = pci_map_single(pdev, skb->data,
1126                         rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1127
1128         if (pci_dma_mapping_error(pdev, dma)) {
1129                 dev_kfree_skb_any(skb);
1130                 buffer->skb = NULL;
1131                 return -ENOMEM;
1132         }
1133
1134         buffer->skb = skb;
1135         buffer->dma = dma;
1136         buffer->state = QLCNIC_BUFFER_BUSY;
1137
1138         return 0;
1139 }
1140
1141 static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter,
1142                 struct qlcnic_host_rds_ring *rds_ring, u16 index, u16 cksum)
1143 {
1144         struct qlcnic_rx_buffer *buffer;
1145         struct sk_buff *skb;
1146
1147         buffer = &rds_ring->rx_buf_arr[index];
1148
1149         pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
1150                         PCI_DMA_FROMDEVICE);
1151
1152         skb = buffer->skb;
1153         if (!skb)
1154                 goto no_skb;
1155
1156         if (likely(adapter->rx_csum && cksum == STATUS_CKSUM_OK)) {
1157                 adapter->stats.csummed++;
1158                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1159         } else {
1160                 skb->ip_summed = CHECKSUM_NONE;
1161         }
1162
1163         skb->dev = adapter->netdev;
1164
1165         buffer->skb = NULL;
1166 no_skb:
1167         buffer->state = QLCNIC_BUFFER_FREE;
1168         return skb;
1169 }
1170
1171 static struct qlcnic_rx_buffer *
1172 qlcnic_process_rcv(struct qlcnic_adapter *adapter,
1173                 struct qlcnic_host_sds_ring *sds_ring,
1174                 int ring, u64 sts_data0)
1175 {
1176         struct net_device *netdev = adapter->netdev;
1177         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
1178         struct qlcnic_rx_buffer *buffer;
1179         struct sk_buff *skb;
1180         struct qlcnic_host_rds_ring *rds_ring;
1181         int index, length, cksum, pkt_offset;
1182
1183         if (unlikely(ring >= adapter->max_rds_rings))
1184                 return NULL;
1185
1186         rds_ring = &recv_ctx->rds_rings[ring];
1187
1188         index = qlcnic_get_sts_refhandle(sts_data0);
1189         if (unlikely(index >= rds_ring->num_desc))
1190                 return NULL;
1191
1192         buffer = &rds_ring->rx_buf_arr[index];
1193
1194         length = qlcnic_get_sts_totallength(sts_data0);
1195         cksum  = qlcnic_get_sts_status(sts_data0);
1196         pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1197
1198         skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1199         if (!skb)
1200                 return buffer;
1201
1202         if (length > rds_ring->skb_size)
1203                 skb_put(skb, rds_ring->skb_size);
1204         else
1205                 skb_put(skb, length);
1206
1207         if (pkt_offset)
1208                 skb_pull(skb, pkt_offset);
1209
1210         skb->truesize = skb->len + sizeof(struct sk_buff);
1211         skb->protocol = eth_type_trans(skb, netdev);
1212
1213         napi_gro_receive(&sds_ring->napi, skb);
1214
1215         adapter->stats.rx_pkts++;
1216         adapter->stats.rxbytes += length;
1217
1218         return buffer;
1219 }
1220
1221 #define QLC_TCP_HDR_SIZE            20
1222 #define QLC_TCP_TS_OPTION_SIZE      12
1223 #define QLC_TCP_TS_HDR_SIZE         (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE)
1224
1225 static struct qlcnic_rx_buffer *
1226 qlcnic_process_lro(struct qlcnic_adapter *adapter,
1227                 struct qlcnic_host_sds_ring *sds_ring,
1228                 int ring, u64 sts_data0, u64 sts_data1)
1229 {
1230         struct net_device *netdev = adapter->netdev;
1231         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
1232         struct qlcnic_rx_buffer *buffer;
1233         struct sk_buff *skb;
1234         struct qlcnic_host_rds_ring *rds_ring;
1235         struct iphdr *iph;
1236         struct tcphdr *th;
1237         bool push, timestamp;
1238         int l2_hdr_offset, l4_hdr_offset;
1239         int index;
1240         u16 lro_length, length, data_offset;
1241         u32 seq_number;
1242
1243         if (unlikely(ring > adapter->max_rds_rings))
1244                 return NULL;
1245
1246         rds_ring = &recv_ctx->rds_rings[ring];
1247
1248         index = qlcnic_get_lro_sts_refhandle(sts_data0);
1249         if (unlikely(index > rds_ring->num_desc))
1250                 return NULL;
1251
1252         buffer = &rds_ring->rx_buf_arr[index];
1253
1254         timestamp = qlcnic_get_lro_sts_timestamp(sts_data0);
1255         lro_length = qlcnic_get_lro_sts_length(sts_data0);
1256         l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0);
1257         l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0);
1258         push = qlcnic_get_lro_sts_push_flag(sts_data0);
1259         seq_number = qlcnic_get_lro_sts_seq_number(sts_data1);
1260
1261         skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1262         if (!skb)
1263                 return buffer;
1264
1265         if (timestamp)
1266                 data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE;
1267         else
1268                 data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE;
1269
1270         skb_put(skb, lro_length + data_offset);
1271
1272         skb->truesize = skb->len + sizeof(struct sk_buff) + skb_headroom(skb);
1273
1274         skb_pull(skb, l2_hdr_offset);
1275         skb->protocol = eth_type_trans(skb, netdev);
1276
1277         iph = (struct iphdr *)skb->data;
1278         th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
1279
1280         length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1281         iph->tot_len = htons(length);
1282         iph->check = 0;
1283         iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
1284         th->psh = push;
1285         th->seq = htonl(seq_number);
1286
1287         length = skb->len;
1288
1289         netif_receive_skb(skb);
1290
1291         adapter->stats.lro_pkts++;
1292         adapter->stats.rxbytes += length;
1293
1294         return buffer;
1295 }
1296
1297 int
1298 qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max)
1299 {
1300         struct qlcnic_adapter *adapter = sds_ring->adapter;
1301         struct list_head *cur;
1302         struct status_desc *desc;
1303         struct qlcnic_rx_buffer *rxbuf;
1304         u64 sts_data0, sts_data1;
1305
1306         int count = 0;
1307         int opcode, ring, desc_cnt;
1308         u32 consumer = sds_ring->consumer;
1309
1310         while (count < max) {
1311                 desc = &sds_ring->desc_head[consumer];
1312                 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1313
1314                 if (!(sts_data0 & STATUS_OWNER_HOST))
1315                         break;
1316
1317                 desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1318                 opcode = qlcnic_get_sts_opcode(sts_data0);
1319
1320                 switch (opcode) {
1321                 case QLCNIC_RXPKT_DESC:
1322                 case QLCNIC_OLD_RXPKT_DESC:
1323                 case QLCNIC_SYN_OFFLOAD:
1324                         ring = qlcnic_get_sts_type(sts_data0);
1325                         rxbuf = qlcnic_process_rcv(adapter, sds_ring,
1326                                         ring, sts_data0);
1327                         break;
1328                 case QLCNIC_LRO_DESC:
1329                         ring = qlcnic_get_lro_sts_type(sts_data0);
1330                         sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1331                         rxbuf = qlcnic_process_lro(adapter, sds_ring,
1332                                         ring, sts_data0, sts_data1);
1333                         break;
1334                 case QLCNIC_RESPONSE_DESC:
1335                         qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1336                 default:
1337                         goto skip;
1338                 }
1339
1340                 WARN_ON(desc_cnt > 1);
1341
1342                 if (rxbuf)
1343                         list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1344
1345 skip:
1346                 for (; desc_cnt > 0; desc_cnt--) {
1347                         desc = &sds_ring->desc_head[consumer];
1348                         desc->status_desc_data[0] =
1349                                 cpu_to_le64(STATUS_OWNER_PHANTOM);
1350                         consumer = get_next_index(consumer, sds_ring->num_desc);
1351                 }
1352                 count++;
1353         }
1354
1355         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1356                 struct qlcnic_host_rds_ring *rds_ring =
1357                         &adapter->recv_ctx.rds_rings[ring];
1358
1359                 if (!list_empty(&sds_ring->free_list[ring])) {
1360                         list_for_each(cur, &sds_ring->free_list[ring]) {
1361                                 rxbuf = list_entry(cur,
1362                                                 struct qlcnic_rx_buffer, list);
1363                                 qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf);
1364                         }
1365                         spin_lock(&rds_ring->lock);
1366                         list_splice_tail_init(&sds_ring->free_list[ring],
1367                                                 &rds_ring->free_list);
1368                         spin_unlock(&rds_ring->lock);
1369                 }
1370
1371                 qlcnic_post_rx_buffers_nodb(adapter, rds_ring);
1372         }
1373
1374         if (count) {
1375                 sds_ring->consumer = consumer;
1376                 writel(consumer, sds_ring->crb_sts_consumer);
1377         }
1378
1379         return count;
1380 }
1381
1382 void
1383 qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter, u32 ringid,
1384         struct qlcnic_host_rds_ring *rds_ring)
1385 {
1386         struct rcv_desc *pdesc;
1387         struct qlcnic_rx_buffer *buffer;
1388         int producer, count = 0;
1389         struct list_head *head;
1390
1391         producer = rds_ring->producer;
1392
1393         spin_lock(&rds_ring->lock);
1394         head = &rds_ring->free_list;
1395         while (!list_empty(head)) {
1396
1397                 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1398
1399                 if (!buffer->skb) {
1400                         if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1401                                 break;
1402                 }
1403
1404                 count++;
1405                 list_del(&buffer->list);
1406
1407                 /* make a rcv descriptor  */
1408                 pdesc = &rds_ring->desc_head[producer];
1409                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1410                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1411                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1412
1413                 producer = get_next_index(producer, rds_ring->num_desc);
1414         }
1415         spin_unlock(&rds_ring->lock);
1416
1417         if (count) {
1418                 rds_ring->producer = producer;
1419                 writel((producer-1) & (rds_ring->num_desc-1),
1420                                 rds_ring->crb_rcv_producer);
1421         }
1422 }
1423
1424 static void
1425 qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
1426                 struct qlcnic_host_rds_ring *rds_ring)
1427 {
1428         struct rcv_desc *pdesc;
1429         struct qlcnic_rx_buffer *buffer;
1430         int producer, count = 0;
1431         struct list_head *head;
1432
1433         producer = rds_ring->producer;
1434         if (!spin_trylock(&rds_ring->lock))
1435                 return;
1436
1437         head = &rds_ring->free_list;
1438         while (!list_empty(head)) {
1439
1440                 buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1441
1442                 if (!buffer->skb) {
1443                         if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1444                                 break;
1445                 }
1446
1447                 count++;
1448                 list_del(&buffer->list);
1449
1450                 /* make a rcv descriptor  */
1451                 pdesc = &rds_ring->desc_head[producer];
1452                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1453                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1454                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1455
1456                 producer = get_next_index(producer, rds_ring->num_desc);
1457         }
1458
1459         if (count) {
1460                 rds_ring->producer = producer;
1461                 writel((producer - 1) & (rds_ring->num_desc - 1),
1462                                 rds_ring->crb_rcv_producer);
1463         }
1464         spin_unlock(&rds_ring->lock);
1465 }
1466