drivers/net/ethernet/qlogic/netxen/netxen_nic_init.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright (C) 2003 - 2009 NetXen, Inc.
   4  * Copyright (C) 2009 - QLogic Corporation.
   5  * All rights reserved.
   6  */
   7
   8 #include <linux/netdevice.h>
   9 #include <linux/delay.h>
  10 #include <linux/slab.h>
  11 #include <linux/if_vlan.h>
  12 #include <net/checksum.h>
  13 #include "netxen_nic.h"
  14 #include "netxen_nic_hw.h"
  15
  16 struct crb_addr_pair {
  17         u32 addr;
  18         u32 data;
  19 };
  20
  21 #define NETXEN_MAX_CRB_XFORM 60
  22 static unsigned int crb_addr_xform[NETXEN_MAX_CRB_XFORM];
  23 #define NETXEN_ADDR_ERROR (0xffffffff)
  24
  25 #define crb_addr_transform(name) \
  26         crb_addr_xform[NETXEN_HW_PX_MAP_CRB_##name] = \
  27         NETXEN_HW_CRB_HUB_AGT_ADR_##name << 20
  28
  29 #define NETXEN_NIC_XDMA_RESET 0x8000ff
  30
  31 static void
  32 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
  33                 struct nx_host_rds_ring *rds_ring);
  34 static int netxen_p3_has_mn(struct netxen_adapter *adapter);
  35
  36 static void crb_addr_transform_setup(void)
  37 {
  38         crb_addr_transform(XDMA);
  39         crb_addr_transform(TIMR);
  40         crb_addr_transform(SRE);
  41         crb_addr_transform(SQN3);
  42         crb_addr_transform(SQN2);
  43         crb_addr_transform(SQN1);
  44         crb_addr_transform(SQN0);
  45         crb_addr_transform(SQS3);
  46         crb_addr_transform(SQS2);
  47         crb_addr_transform(SQS1);
  48         crb_addr_transform(SQS0);
  49         crb_addr_transform(RPMX7);
  50         crb_addr_transform(RPMX6);
  51         crb_addr_transform(RPMX5);
  52         crb_addr_transform(RPMX4);
  53         crb_addr_transform(RPMX3);
  54         crb_addr_transform(RPMX2);
  55         crb_addr_transform(RPMX1);
  56         crb_addr_transform(RPMX0);
  57         crb_addr_transform(ROMUSB);
  58         crb_addr_transform(SN);
  59         crb_addr_transform(QMN);
  60         crb_addr_transform(QMS);
  61         crb_addr_transform(PGNI);
  62         crb_addr_transform(PGND);
  63         crb_addr_transform(PGN3);
  64         crb_addr_transform(PGN2);
  65         crb_addr_transform(PGN1);
  66         crb_addr_transform(PGN0);
  67         crb_addr_transform(PGSI);
  68         crb_addr_transform(PGSD);
  69         crb_addr_transform(PGS3);
  70         crb_addr_transform(PGS2);
  71         crb_addr_transform(PGS1);
  72         crb_addr_transform(PGS0);
  73         crb_addr_transform(PS);
  74         crb_addr_transform(PH);
  75         crb_addr_transform(NIU);
  76         crb_addr_transform(I2Q);
  77         crb_addr_transform(EG);
  78         crb_addr_transform(MN);
  79         crb_addr_transform(MS);
  80         crb_addr_transform(CAS2);
  81         crb_addr_transform(CAS1);
  82         crb_addr_transform(CAS0);
  83         crb_addr_transform(CAM);
  84         crb_addr_transform(C2C1);
  85         crb_addr_transform(C2C0);
  86         crb_addr_transform(SMB);
  87         crb_addr_transform(OCM0);
  88         crb_addr_transform(I2C0);
  89 }
  90
  91 void netxen_release_rx_buffers(struct netxen_adapter *adapter)
  92 {
  93         struct netxen_recv_context *recv_ctx;
  94         struct nx_host_rds_ring *rds_ring;
  95         struct netxen_rx_buffer *rx_buf;
  96         int i, ring;
  97
  98         recv_ctx = &adapter->recv_ctx;
  99         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 100                 rds_ring = &recv_ctx->rds_rings[ring];
 101                 for (i = 0; i < rds_ring->num_desc; ++i) {
 102                         rx_buf = &(rds_ring->rx_buf_arr[i]);
 103                         if (rx_buf->state == NETXEN_BUFFER_FREE)
 104                                 continue;
 105                         pci_unmap_single(adapter->pdev,
 106                                         rx_buf->dma,
 107                                         rds_ring->dma_size,
 108                                         PCI_DMA_FROMDEVICE);
 109                         if (rx_buf->skb != NULL)
 110                                 dev_kfree_skb_any(rx_buf->skb);
 111                 }
 112         }
 113 }
 114
 115 void netxen_release_tx_buffers(struct netxen_adapter *adapter)
 116 {
 117         struct netxen_cmd_buffer *cmd_buf;
 118         struct netxen_skb_frag *buffrag;
 119         int i, j;
 120         struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
 121
 122         spin_lock_bh(&adapter->tx_clean_lock);
 123         cmd_buf = tx_ring->cmd_buf_arr;
 124         for (i = 0; i < tx_ring->num_desc; i++) {
 125                 buffrag = cmd_buf->frag_array;
 126                 if (buffrag->dma) {
 127                         pci_unmap_single(adapter->pdev, buffrag->dma,
 128                                          buffrag->length, PCI_DMA_TODEVICE);
 129                         buffrag->dma = 0ULL;
 130                 }
 131                 for (j = 1; j < cmd_buf->frag_count; j++) {
 132                         buffrag++;
 133                         if (buffrag->dma) {
 134                                 pci_unmap_page(adapter->pdev, buffrag->dma,
 135                                                buffrag->length,
 136                                                PCI_DMA_TODEVICE);
 137                                 buffrag->dma = 0ULL;
 138                         }
 139                 }
 140                 if (cmd_buf->skb) {
 141                         dev_kfree_skb_any(cmd_buf->skb);
 142                         cmd_buf->skb = NULL;
 143                 }
 144                 cmd_buf++;
 145         }
 146         spin_unlock_bh(&adapter->tx_clean_lock);
 147 }
 148
 149 void netxen_free_sw_resources(struct netxen_adapter *adapter)
 150 {
 151         struct netxen_recv_context *recv_ctx;
 152         struct nx_host_rds_ring *rds_ring;
 153         struct nx_host_tx_ring *tx_ring;
 154         int ring;
 155
 156         recv_ctx = &adapter->recv_ctx;
 157
 158         if (recv_ctx->rds_rings == NULL)
 159                 goto skip_rds;
 160
 161         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 162                 rds_ring = &recv_ctx->rds_rings[ring];
 163                 vfree(rds_ring->rx_buf_arr);
 164                 rds_ring->rx_buf_arr = NULL;
 165         }
 166         kfree(recv_ctx->rds_rings);
 167
 168 skip_rds:
 169         if (adapter->tx_ring == NULL)
 170                 return;
 171
 172         tx_ring = adapter->tx_ring;
 173         vfree(tx_ring->cmd_buf_arr);
 174         kfree(tx_ring);
 175         adapter->tx_ring = NULL;
 176 }
 177
 178 int netxen_alloc_sw_resources(struct netxen_adapter *adapter)
 179 {
 180         struct netxen_recv_context *recv_ctx;
 181         struct nx_host_rds_ring *rds_ring;
 182         struct nx_host_sds_ring *sds_ring;
 183         struct nx_host_tx_ring *tx_ring;
 184         struct netxen_rx_buffer *rx_buf;
 185         int ring, i;
 186
 187         struct netxen_cmd_buffer *cmd_buf_arr;
 188         struct net_device *netdev = adapter->netdev;
 189
 190         tx_ring = kzalloc(sizeof(struct nx_host_tx_ring), GFP_KERNEL);
 191         if (tx_ring == NULL)
 192                 return -ENOMEM;
 193
 194         adapter->tx_ring = tx_ring;
 195
 196         tx_ring->num_desc = adapter->num_txd;
 197         tx_ring->txq = netdev_get_tx_queue(netdev, 0);
 198
 199         cmd_buf_arr = vzalloc(TX_BUFF_RINGSIZE(tx_ring));
 200         if (cmd_buf_arr == NULL)
 201                 goto err_out;
 202
 203         tx_ring->cmd_buf_arr = cmd_buf_arr;
 204
 205         recv_ctx = &adapter->recv_ctx;
 206
 207         rds_ring = kcalloc(adapter->max_rds_rings,
 208                            sizeof(struct nx_host_rds_ring), GFP_KERNEL);
 209         if (rds_ring == NULL)
 210                 goto err_out;
 211
 212         recv_ctx->rds_rings = rds_ring;
 213
 214         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 215                 rds_ring = &recv_ctx->rds_rings[ring];
 216                 switch (ring) {
 217                 case RCV_RING_NORMAL:
 218                         rds_ring->num_desc = adapter->num_rxd;
 219                         if (adapter->ahw.cut_through) {
 220                                 rds_ring->dma_size =
 221                                         NX_CT_DEFAULT_RX_BUF_LEN;
 222                                 rds_ring->skb_size =
 223                                         NX_CT_DEFAULT_RX_BUF_LEN;
 224                         } else {
 225                                 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 226                                         rds_ring->dma_size =
 227                                                 NX_P3_RX_BUF_MAX_LEN;
 228                                 else
 229                                         rds_ring->dma_size =
 230                                                 NX_P2_RX_BUF_MAX_LEN;
 231                                 rds_ring->skb_size =
 232                                         rds_ring->dma_size + NET_IP_ALIGN;
 233                         }
 234                         break;
 235
 236                 case RCV_RING_JUMBO:
 237                         rds_ring->num_desc = adapter->num_jumbo_rxd;
 238                         if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 239                                 rds_ring->dma_size =
 240                                         NX_P3_RX_JUMBO_BUF_MAX_LEN;
 241                         else
 242                                 rds_ring->dma_size =
 243                                         NX_P2_RX_JUMBO_BUF_MAX_LEN;
 244
 245                         if (adapter->capabilities & NX_CAP0_HW_LRO)
 246                                 rds_ring->dma_size += NX_LRO_BUFFER_EXTRA;
 247
 248                         rds_ring->skb_size =
 249                                 rds_ring->dma_size + NET_IP_ALIGN;
 250                         break;
 251
 252                 case RCV_RING_LRO:
 253                         rds_ring->num_desc = adapter->num_lro_rxd;
 254                         rds_ring->dma_size = NX_RX_LRO_BUFFER_LENGTH;
 255                         rds_ring->skb_size = rds_ring->dma_size + NET_IP_ALIGN;
 256                         break;
 257
 258                 }
 259                 rds_ring->rx_buf_arr = vzalloc(RCV_BUFF_RINGSIZE(rds_ring));
 260                 if (rds_ring->rx_buf_arr == NULL)
 261                         /* free whatever was already allocated */
 262                         goto err_out;
 263
 264                 INIT_LIST_HEAD(&rds_ring->free_list);
 265                 /*
 266                  * Now go through all of them, set reference handles
 267                  * and put them in the queues.
 268                  */
 269                 rx_buf = rds_ring->rx_buf_arr;
 270                 for (i = 0; i < rds_ring->num_desc; i++) {
 271                         list_add_tail(&rx_buf->list,
 272                                         &rds_ring->free_list);
 273                         rx_buf->ref_handle = i;
 274                         rx_buf->state = NETXEN_BUFFER_FREE;
 275                         rx_buf++;
 276                 }
 277                 spin_lock_init(&rds_ring->lock);
 278         }
 279
 280         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 281                 sds_ring = &recv_ctx->sds_rings[ring];
 282                 sds_ring->irq = adapter->msix_entries[ring].vector;
 283                 sds_ring->adapter = adapter;
 284                 sds_ring->num_desc = adapter->num_rxd;
 285
 286                 for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
 287                         INIT_LIST_HEAD(&sds_ring->free_list[i]);
 288         }
 289
 290         return 0;
 291
 292 err_out:
 293         netxen_free_sw_resources(adapter);
 294         return -ENOMEM;
 295 }
 296
 297 /*
 298  * netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
 299  * address to external PCI CRB address.
 300  */
 301 static u32 netxen_decode_crb_addr(u32 addr)
 302 {
 303         int i;
 304         u32 base_addr, offset, pci_base;
 305
 306         crb_addr_transform_setup();
 307
 308         pci_base = NETXEN_ADDR_ERROR;
 309         base_addr = addr & 0xfff00000;
 310         offset = addr & 0x000fffff;
 311
 312         for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
 313                 if (crb_addr_xform[i] == base_addr) {
 314                         pci_base = i << 20;
 315                         break;
 316                 }
 317         }
 318         if (pci_base == NETXEN_ADDR_ERROR)
 319                 return pci_base;
 320         else
 321                 return pci_base + offset;
 322 }
 323
 324 #define NETXEN_MAX_ROM_WAIT_USEC        100
 325
 326 static int netxen_wait_rom_done(struct netxen_adapter *adapter)
 327 {
 328         long timeout = 0;
 329         long done = 0;
 330
 331         cond_resched();
 332
 333         while (done == 0) {
 334                 done = NXRD32(adapter, NETXEN_ROMUSB_GLB_STATUS);
 335                 done &= 2;
 336                 if (++timeout >= NETXEN_MAX_ROM_WAIT_USEC) {
 337                         dev_err(&adapter->pdev->dev,
 338                                 "Timeout reached  waiting for rom done");
 339                         return -EIO;
 340                 }
 341                 udelay(1);
 342         }
 343         return 0;
 344 }
 345
 346 static int do_rom_fast_read(struct netxen_adapter *adapter,
 347                             int addr, int *valp)
 348 {
 349         NXWR32(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
 350         NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 351         NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
 352         NXWR32(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
 353         if (netxen_wait_rom_done(adapter)) {
 354                 printk("Error waiting for rom done\n");
 355                 return -EIO;
 356         }
 357         /* reset abyte_cnt and dummy_byte_cnt */
 358         NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
 359         udelay(10);
 360         NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 361
 362         *valp = NXRD32(adapter, NETXEN_ROMUSB_ROM_RDATA);
 363         return 0;
 364 }
 365
 366 static int do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 367                                   u8 *bytes, size_t size)
 368 {
 369         int addridx;
 370         int ret = 0;
 371
 372         for (addridx = addr; addridx < (addr + size); addridx += 4) {
 373                 int v;
 374                 ret = do_rom_fast_read(adapter, addridx, &v);
 375                 if (ret != 0)
 376                         break;
 377                 *(__le32 *)bytes = cpu_to_le32(v);
 378                 bytes += 4;
 379         }
 380
 381         return ret;
 382 }
 383
 384 int
 385 netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 386                                 u8 *bytes, size_t size)
 387 {
 388         int ret;
 389
 390         ret = netxen_rom_lock(adapter);
 391         if (ret < 0)
 392                 return ret;
 393
 394         ret = do_rom_fast_read_words(adapter, addr, bytes, size);
 395
 396         netxen_rom_unlock(adapter);
 397         return ret;
 398 }
 399
 400 int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
 401 {
 402         int ret;
 403
 404         if (netxen_rom_lock(adapter) != 0)
 405                 return -EIO;
 406
 407         ret = do_rom_fast_read(adapter, addr, valp);
 408         netxen_rom_unlock(adapter);
 409         return ret;
 410 }
 411
 412 #define NETXEN_BOARDTYPE                0x4008
 413 #define NETXEN_BOARDNUM                 0x400c
 414 #define NETXEN_CHIPNUM                  0x4010
 415
 416 int netxen_pinit_from_rom(struct netxen_adapter *adapter)
 417 {
 418         int addr, val;
 419         int i, n, init_delay = 0;
 420         struct crb_addr_pair *buf;
 421         unsigned offset;
 422         u32 off;
 423
 424         /* resetall */
 425         netxen_rom_lock(adapter);
 426         NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0xfeffffff);
 427         netxen_rom_unlock(adapter);
 428
 429         if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 430                 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 431                         (n != 0xcafecafe) ||
 432                         netxen_rom_fast_read(adapter, 4, &n) != 0) {
 433                         printk(KERN_ERR "%s: ERROR Reading crb_init area: "
 434                                         "n: %08x\n", netxen_nic_driver_name, n);
 435                         return -EIO;
 436                 }
 437                 offset = n & 0xffffU;
 438                 n = (n >> 16) & 0xffffU;
 439         } else {
 440                 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 441                         !(n & 0x80000000)) {
 442                         printk(KERN_ERR "%s: ERROR Reading crb_init area: "
 443                                         "n: %08x\n", netxen_nic_driver_name, n);
 444                         return -EIO;
 445                 }
 446                 offset = 1;
 447                 n &= ~0x80000000;
 448         }
 449
 450         if (n >= 1024) {
 451                 printk(KERN_ERR "%s:n=0x%x Error! NetXen card flash not"
 452                        " initialized.\n", __func__, n);
 453                 return -EIO;
 454         }
 455
 456         buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
 457         if (buf == NULL)
 458                 return -ENOMEM;
 459
 460         for (i = 0; i < n; i++) {
 461                 if (netxen_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
 462                 netxen_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
 463                         kfree(buf);
 464                         return -EIO;
 465                 }
 466
 467                 buf[i].addr = addr;
 468                 buf[i].data = val;
 469
 470         }
 471
 472         for (i = 0; i < n; i++) {
 473
 474                 off = netxen_decode_crb_addr(buf[i].addr);
 475                 if (off == NETXEN_ADDR_ERROR) {
 476                         printk(KERN_ERR"CRB init value out of range %x\n",
 477                                         buf[i].addr);
 478                         continue;
 479                 }
 480                 off += NETXEN_PCI_CRBSPACE;
 481
 482                 if (off & 1)
 483                         continue;
 484
 485                 /* skipping cold reboot MAGIC */
 486                 if (off == NETXEN_CAM_RAM(0x1fc))
 487                         continue;
 488
 489                 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 490                         if (off == (NETXEN_CRB_I2C0 + 0x1c))
 491                                 continue;
 492                         /* do not reset PCI */
 493                         if (off == (ROMUSB_GLB + 0xbc))
 494                                 continue;
 495                         if (off == (ROMUSB_GLB + 0xa8))
 496                                 continue;
 497                         if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
 498                                 continue;
 499                         if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
 500                                 continue;
 501                         if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
 502                                 continue;
 503                         if ((off & 0x0ff00000) == NETXEN_CRB_DDR_NET)
 504                                 continue;
 505                         if (off == (NETXEN_CRB_PEG_NET_1 + 0x18) &&
 506                                 !NX_IS_REVISION_P3P(adapter->ahw.revision_id))
 507                                 buf[i].data = 0x1020;
 508                         /* skip the function enable register */
 509                         if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION))
 510                                 continue;
 511                         if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION2))
 512                                 continue;
 513                         if ((off & 0x0ff00000) == NETXEN_CRB_SMB)
 514                                 continue;
 515                 }
 516
 517                 init_delay = 1;
 518                 /* After writing this register, HW needs time for CRB */
 519                 /* to quiet down (else crb_window returns 0xffffffff) */
 520                 if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
 521                         init_delay = 1000;
 522                         if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 523                                 /* hold xdma in reset also */
 524                                 buf[i].data = NETXEN_NIC_XDMA_RESET;
 525                                 buf[i].data = 0x8000ff;
 526                         }
 527                 }
 528
 529                 NXWR32(adapter, off, buf[i].data);
 530
 531                 msleep(init_delay);
 532         }
 533         kfree(buf);
 534
 535         /* disable_peg_cache_all */
 536
 537         /* unreset_net_cache */
 538         if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 539                 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
 540                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, (val & 0xffffff0f));
 541         }
 542
 543         /* p2dn replyCount */
 544         NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
 545         /* disable_peg_cache 0 */
 546         NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0x4c, 8);
 547         /* disable_peg_cache 1 */
 548         NXWR32(adapter, NETXEN_CRB_PEG_NET_I + 0x4c, 8);
 549
 550         /* peg_clr_all */
 551
 552         /* peg_clr 0 */
 553         NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x8, 0);
 554         NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0xc, 0);
 555         /* peg_clr 1 */
 556         NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0x8, 0);
 557         NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0xc, 0);
 558         /* peg_clr 2 */
 559         NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0x8, 0);
 560         NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0xc, 0);
 561         /* peg_clr 3 */
 562         NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0x8, 0);
 563         NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0xc, 0);
 564         return 0;
 565 }
 566
 567 static struct uni_table_desc *nx_get_table_desc(const u8 *unirom, int section)
 568 {
 569         uint32_t i;
 570         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 571         __le32 entries = cpu_to_le32(directory->num_entries);
 572
 573         for (i = 0; i < entries; i++) {
 574
 575                 __le32 offs = cpu_to_le32(directory->findex) +
 576                                 (i * cpu_to_le32(directory->entry_size));
 577                 __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
 578
 579                 if (tab_type == section)
 580                         return (struct uni_table_desc *) &unirom[offs];
 581         }
 582
 583         return NULL;
 584 }
 585
 586 #define QLCNIC_FILEHEADER_SIZE  (14 * 4)
 587
 588 static int
 589 netxen_nic_validate_header(struct netxen_adapter *adapter)
 590 {
 591         const u8 *unirom = adapter->fw->data;
 592         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 593         u32 fw_file_size = adapter->fw->size;
 594         u32 tab_size;
 595         __le32 entries;
 596         __le32 entry_size;
 597
 598         if (fw_file_size < QLCNIC_FILEHEADER_SIZE)
 599                 return -EINVAL;
 600
 601         entries = cpu_to_le32(directory->num_entries);
 602         entry_size = cpu_to_le32(directory->entry_size);
 603         tab_size = cpu_to_le32(directory->findex) + (entries * entry_size);
 604
 605         if (fw_file_size < tab_size)
 606                 return -EINVAL;
 607
 608         return 0;
 609 }
 610
 611 static int
 612 netxen_nic_validate_bootld(struct netxen_adapter *adapter)
 613 {
 614         struct uni_table_desc *tab_desc;
 615         struct uni_data_desc *descr;
 616         const u8 *unirom = adapter->fw->data;
 617         __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 618                                 NX_UNI_BOOTLD_IDX_OFF));
 619         u32 offs;
 620         u32 tab_size;
 621         u32 data_size;
 622
 623         tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_BOOTLD);
 624
 625         if (!tab_desc)
 626                 return -EINVAL;
 627
 628         tab_size = cpu_to_le32(tab_desc->findex) +
 629                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 630
 631         if (adapter->fw->size < tab_size)
 632                 return -EINVAL;
 633
 634         offs = cpu_to_le32(tab_desc->findex) +
 635                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 636         descr = (struct uni_data_desc *)&unirom[offs];
 637
 638         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 639
 640         if (adapter->fw->size < data_size)
 641                 return -EINVAL;
 642
 643         return 0;
 644 }
 645
 646 static int
 647 netxen_nic_validate_fw(struct netxen_adapter *adapter)
 648 {
 649         struct uni_table_desc *tab_desc;
 650         struct uni_data_desc *descr;
 651         const u8 *unirom = adapter->fw->data;
 652         __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 653                                 NX_UNI_FIRMWARE_IDX_OFF));
 654         u32 offs;
 655         u32 tab_size;
 656         u32 data_size;
 657
 658         tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_FW);
 659
 660         if (!tab_desc)
 661                 return -EINVAL;
 662
 663         tab_size = cpu_to_le32(tab_desc->findex) +
 664                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 665
 666         if (adapter->fw->size < tab_size)
 667                 return -EINVAL;
 668
 669         offs = cpu_to_le32(tab_desc->findex) +
 670                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 671         descr = (struct uni_data_desc *)&unirom[offs];
 672         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 673
 674         if (adapter->fw->size < data_size)
 675                 return -EINVAL;
 676
 677         return 0;
 678 }
 679
 680
 681 static int
 682 netxen_nic_validate_product_offs(struct netxen_adapter *adapter)
 683 {
 684         struct uni_table_desc *ptab_descr;
 685         const u8 *unirom = adapter->fw->data;
 686         int mn_present = (NX_IS_REVISION_P2(adapter->ahw.revision_id)) ?
 687                         1 : netxen_p3_has_mn(adapter);
 688         __le32 entries;
 689         __le32 entry_size;
 690         u32 tab_size;
 691         u32 i;
 692
 693         ptab_descr = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_PRODUCT_TBL);
 694         if (ptab_descr == NULL)
 695                 return -EINVAL;
 696
 697         entries = cpu_to_le32(ptab_descr->num_entries);
 698         entry_size = cpu_to_le32(ptab_descr->entry_size);
 699         tab_size = cpu_to_le32(ptab_descr->findex) + (entries * entry_size);
 700
 701         if (adapter->fw->size < tab_size)
 702                 return -EINVAL;
 703
 704 nomn:
 705         for (i = 0; i < entries; i++) {
 706
 707                 __le32 flags, file_chiprev, offs;
 708                 u8 chiprev = adapter->ahw.revision_id;
 709                 uint32_t flagbit;
 710
 711                 offs = cpu_to_le32(ptab_descr->findex) +
 712                                 (i * cpu_to_le32(ptab_descr->entry_size));
 713                 flags = cpu_to_le32(*((int *)&unirom[offs] + NX_UNI_FLAGS_OFF));
 714                 file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
 715                                                         NX_UNI_CHIP_REV_OFF));
 716
 717                 flagbit = mn_present ? 1 : 2;
 718
 719                 if ((chiprev == file_chiprev) &&
 720                                         ((1ULL << flagbit) & flags)) {
 721                         adapter->file_prd_off = offs;
 722                         return 0;
 723                 }
 724         }
 725
 726         if (mn_present && NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 727                 mn_present = 0;
 728                 goto nomn;
 729         }
 730
 731         return -EINVAL;
 732 }
 733
 734 static int
 735 netxen_nic_validate_unified_romimage(struct netxen_adapter *adapter)
 736 {
 737         if (netxen_nic_validate_header(adapter)) {
 738                 dev_err(&adapter->pdev->dev,
 739                                 "unified image: header validation failed\n");
 740                 return -EINVAL;
 741         }
 742
 743         if (netxen_nic_validate_product_offs(adapter)) {
 744                 dev_err(&adapter->pdev->dev,
 745                                 "unified image: product validation failed\n");
 746                 return -EINVAL;
 747         }
 748
 749         if (netxen_nic_validate_bootld(adapter)) {
 750                 dev_err(&adapter->pdev->dev,
 751                                 "unified image: bootld validation failed\n");
 752                 return -EINVAL;
 753         }
 754
 755         if (netxen_nic_validate_fw(adapter)) {
 756                 dev_err(&adapter->pdev->dev,
 757                                 "unified image: firmware validation failed\n");
 758                 return -EINVAL;
 759         }
 760
 761         return 0;
 762 }
 763
 764 static struct uni_data_desc *nx_get_data_desc(struct netxen_adapter *adapter,
 765                         u32 section, u32 idx_offset)
 766 {
 767         const u8 *unirom = adapter->fw->data;
 768         int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 769                                                                 idx_offset));
 770         struct uni_table_desc *tab_desc;
 771         __le32 offs;
 772
 773         tab_desc = nx_get_table_desc(unirom, section);
 774
 775         if (tab_desc == NULL)
 776                 return NULL;
 777
 778         offs = cpu_to_le32(tab_desc->findex) +
 779                         (cpu_to_le32(tab_desc->entry_size) * idx);
 780
 781         return (struct uni_data_desc *)&unirom[offs];
 782 }
 783
 784 static u8 *
 785 nx_get_bootld_offs(struct netxen_adapter *adapter)
 786 {
 787         u32 offs = NETXEN_BOOTLD_START;
 788
 789         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 790                 offs = cpu_to_le32((nx_get_data_desc(adapter,
 791                                         NX_UNI_DIR_SECT_BOOTLD,
 792                                         NX_UNI_BOOTLD_IDX_OFF))->findex);
 793
 794         return (u8 *)&adapter->fw->data[offs];
 795 }
 796
 797 static u8 *
 798 nx_get_fw_offs(struct netxen_adapter *adapter)
 799 {
 800         u32 offs = NETXEN_IMAGE_START;
 801
 802         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 803                 offs = cpu_to_le32((nx_get_data_desc(adapter,
 804                                         NX_UNI_DIR_SECT_FW,
 805                                         NX_UNI_FIRMWARE_IDX_OFF))->findex);
 806
 807         return (u8 *)&adapter->fw->data[offs];
 808 }
 809
 810 static __le32
 811 nx_get_fw_size(struct netxen_adapter *adapter)
 812 {
 813         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 814                 return cpu_to_le32((nx_get_data_desc(adapter,
 815                                         NX_UNI_DIR_SECT_FW,
 816                                         NX_UNI_FIRMWARE_IDX_OFF))->size);
 817         else
 818                 return cpu_to_le32(
 819                                 *(u32 *)&adapter->fw->data[NX_FW_SIZE_OFFSET]);
 820 }
 821
 822 static __le32
 823 nx_get_fw_version(struct netxen_adapter *adapter)
 824 {
 825         struct uni_data_desc *fw_data_desc;
 826         const struct firmware *fw = adapter->fw;
 827         __le32 major, minor, sub;
 828         const u8 *ver_str;
 829         int i, ret = 0;
 830
 831         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 832
 833                 fw_data_desc = nx_get_data_desc(adapter,
 834                                 NX_UNI_DIR_SECT_FW, NX_UNI_FIRMWARE_IDX_OFF);
 835                 ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
 836                                 cpu_to_le32(fw_data_desc->size) - 17;
 837
 838                 for (i = 0; i < 12; i++) {
 839                         if (!strncmp(&ver_str[i], "REV=", 4)) {
 840                                 ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
 841                                                         &major, &minor, &sub);
 842                                 break;
 843                         }
 844                 }
 845
 846                 if (ret != 3)
 847                         return 0;
 848
 849                 return major + (minor << 8) + (sub << 16);
 850
 851         } else
 852                 return cpu_to_le32(*(u32 *)&fw->data[NX_FW_VERSION_OFFSET]);
 853 }
 854
 855 static __le32
 856 nx_get_bios_version(struct netxen_adapter *adapter)
 857 {
 858         const struct firmware *fw = adapter->fw;
 859         __le32 bios_ver, prd_off = adapter->file_prd_off;
 860
 861         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 862                 bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
 863                                                 + NX_UNI_BIOS_VERSION_OFF));
 864                 return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) +
 865                                                         (bios_ver >> 24);
 866         } else
 867                 return cpu_to_le32(*(u32 *)&fw->data[NX_BIOS_VERSION_OFFSET]);
 868
 869 }
 870
 871 int
 872 netxen_need_fw_reset(struct netxen_adapter *adapter)
 873 {
 874         u32 count, old_count;
 875         u32 val, version, major, minor, build;
 876         int i, timeout;
 877         u8 fw_type;
 878
 879         /* NX2031 firmware doesn't support heartbit */
 880         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 881                 return 1;
 882
 883         if (adapter->need_fw_reset)
 884                 return 1;
 885
 886         /* last attempt had failed */
 887         if (NXRD32(adapter, CRB_CMDPEG_STATE) == PHAN_INITIALIZE_FAILED)
 888                 return 1;
 889
 890         old_count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 891
 892         for (i = 0; i < 10; i++) {
 893
 894                 timeout = msleep_interruptible(200);
 895                 if (timeout) {
 896                         NXWR32(adapter, CRB_CMDPEG_STATE,
 897                                         PHAN_INITIALIZE_FAILED);
 898                         return -EINTR;
 899                 }
 900
 901                 count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 902                 if (count != old_count)
 903                         break;
 904         }
 905
 906         /* firmware is dead */
 907         if (count == old_count)
 908                 return 1;
 909
 910         /* check if we have got newer or different file firmware */
 911         if (adapter->fw) {
 912
 913                 val = nx_get_fw_version(adapter);
 914
 915                 version = NETXEN_DECODE_VERSION(val);
 916
 917                 major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
 918                 minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
 919                 build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
 920
 921                 if (version > NETXEN_VERSION_CODE(major, minor, build))
 922                         return 1;
 923
 924                 if (version == NETXEN_VERSION_CODE(major, minor, build) &&
 925                         adapter->fw_type != NX_UNIFIED_ROMIMAGE) {
 926
 927                         val = NXRD32(adapter, NETXEN_MIU_MN_CONTROL);
 928                         fw_type = (val & 0x4) ?
 929                                 NX_P3_CT_ROMIMAGE : NX_P3_MN_ROMIMAGE;
 930
 931                         if (adapter->fw_type != fw_type)
 932                                 return 1;
 933                 }
 934         }
 935
 936         return 0;
 937 }
 938
 939 #define NETXEN_MIN_P3_FW_SUPP   NETXEN_VERSION_CODE(4, 0, 505)
 940
 941 int
 942 netxen_check_flash_fw_compatibility(struct netxen_adapter *adapter)
 943 {
 944         u32 flash_fw_ver, min_fw_ver;
 945
 946         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 947                 return 0;
 948
 949         if (netxen_rom_fast_read(adapter,
 950                         NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
 951                 dev_err(&adapter->pdev->dev, "Unable to read flash fw"
 952                         "version\n");
 953                 return -EIO;
 954         }
 955
 956         flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
 957         min_fw_ver = NETXEN_MIN_P3_FW_SUPP;
 958         if (flash_fw_ver >= min_fw_ver)
 959                 return 0;
 960
 961         dev_info(&adapter->pdev->dev, "Flash fw[%d.%d.%d] is < min fw supported"
 962                 "[4.0.505]. Please update firmware on flash\n",
 963                 _major(flash_fw_ver), _minor(flash_fw_ver),
 964                 _build(flash_fw_ver));
 965         return -EINVAL;
 966 }
 967
 968 static char *fw_name[] = {
 969         NX_P2_MN_ROMIMAGE_NAME,
 970         NX_P3_CT_ROMIMAGE_NAME,
 971         NX_P3_MN_ROMIMAGE_NAME,
 972         NX_UNIFIED_ROMIMAGE_NAME,
 973         NX_FLASH_ROMIMAGE_NAME,
 974 };
 975
 976 int
 977 netxen_load_firmware(struct netxen_adapter *adapter)
 978 {
 979         u64 *ptr64;
 980         u32 i, flashaddr, size;
 981         const struct firmware *fw = adapter->fw;
 982         struct pci_dev *pdev = adapter->pdev;
 983
 984         dev_info(&pdev->dev, "loading firmware from %s\n",
 985                         fw_name[adapter->fw_type]);
 986
 987         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 988                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 1);
 989
 990         if (fw) {
 991                 __le64 data;
 992
 993                 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
 994
 995                 ptr64 = (u64 *)nx_get_bootld_offs(adapter);
 996                 flashaddr = NETXEN_BOOTLD_START;
 997
 998                 for (i = 0; i < size; i++) {
 999                         data = cpu_to_le64(ptr64[i]);
1000
1001                         if (adapter->pci_mem_write(adapter, flashaddr, data))
1002                                 return -EIO;
1003
1004                         flashaddr += 8;
1005                 }
1006
1007                 size = (__force u32)nx_get_fw_size(adapter) / 8;
1008
1009                 ptr64 = (u64 *)nx_get_fw_offs(adapter);
1010                 flashaddr = NETXEN_IMAGE_START;
1011
1012                 for (i = 0; i < size; i++) {
1013                         data = cpu_to_le64(ptr64[i]);
1014
1015                         if (adapter->pci_mem_write(adapter,
1016                                                 flashaddr, data))
1017                                 return -EIO;
1018
1019                         flashaddr += 8;
1020                 }
1021
1022                 size = (__force u32)nx_get_fw_size(adapter) % 8;
1023                 if (size) {
1024                         data = cpu_to_le64(ptr64[i]);
1025
1026                         if (adapter->pci_mem_write(adapter,
1027                                                 flashaddr, data))
1028                                 return -EIO;
1029                 }
1030
1031         } else {
1032                 u64 data;
1033                 u32 hi, lo;
1034
1035                 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
1036                 flashaddr = NETXEN_BOOTLD_START;
1037
1038                 for (i = 0; i < size; i++) {
1039                         if (netxen_rom_fast_read(adapter,
1040                                         flashaddr, (int *)&lo) != 0)
1041                                 return -EIO;
1042                         if (netxen_rom_fast_read(adapter,
1043                                         flashaddr + 4, (int *)&hi) != 0)
1044                                 return -EIO;
1045
1046                         /* hi, lo are already in host endian byteorder */
1047                         data = (((u64)hi << 32) | lo);
1048
1049                         if (adapter->pci_mem_write(adapter,
1050                                                 flashaddr, data))
1051                                 return -EIO;
1052
1053                         flashaddr += 8;
1054                 }
1055         }
1056         msleep(1);
1057
1058         if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
1059                 NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x18, 0x1020);
1060                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001e);
1061         } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1062                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001d);
1063         else {
1064                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CHIP_CLK_CTRL, 0x3fff);
1065                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 0);
1066         }
1067
1068         return 0;
1069 }
1070
1071 static int
1072 netxen_validate_firmware(struct netxen_adapter *adapter)
1073 {
1074         __le32 val;
1075         __le32 flash_fw_ver;
1076         u32 file_fw_ver, min_ver, bios;
1077         struct pci_dev *pdev = adapter->pdev;
1078         const struct firmware *fw = adapter->fw;
1079         u8 fw_type = adapter->fw_type;
1080         u32 crbinit_fix_fw;
1081
1082         if (fw_type == NX_UNIFIED_ROMIMAGE) {
1083                 if (netxen_nic_validate_unified_romimage(adapter))
1084                         return -EINVAL;
1085         } else {
1086                 val = cpu_to_le32(*(u32 *)&fw->data[NX_FW_MAGIC_OFFSET]);
1087                 if ((__force u32)val != NETXEN_BDINFO_MAGIC)
1088                         return -EINVAL;
1089
1090                 if (fw->size < NX_FW_MIN_SIZE)
1091                         return -EINVAL;
1092         }
1093
1094         val = nx_get_fw_version(adapter);
1095
1096         if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1097                 min_ver = NETXEN_MIN_P3_FW_SUPP;
1098         else
1099                 min_ver = NETXEN_VERSION_CODE(3, 4, 216);
1100
1101         file_fw_ver = NETXEN_DECODE_VERSION(val);
1102
1103         if ((_major(file_fw_ver) > _NETXEN_NIC_LINUX_MAJOR) ||
1104             (file_fw_ver < min_ver)) {
1105                 dev_err(&pdev->dev,
1106                                 "%s: firmware version %d.%d.%d unsupported\n",
1107                 fw_name[fw_type], _major(file_fw_ver), _minor(file_fw_ver),
1108                  _build(file_fw_ver));
1109                 return -EINVAL;
1110         }
1111         val = nx_get_bios_version(adapter);
1112         if (netxen_rom_fast_read(adapter, NX_BIOS_VERSION_OFFSET, (int *)&bios))
1113                 return -EIO;
1114         if ((__force u32)val != bios) {
1115                 dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
1116                                 fw_name[fw_type]);
1117                 return -EINVAL;
1118         }
1119
1120         if (netxen_rom_fast_read(adapter,
1121                         NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
1122                 dev_err(&pdev->dev, "Unable to read flash fw version\n");
1123                 return -EIO;
1124         }
1125         flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
1126
1127         /* New fw from file is not allowed, if fw on flash is < 4.0.554 */
1128         crbinit_fix_fw = NETXEN_VERSION_CODE(4, 0, 554);
1129         if (file_fw_ver >= crbinit_fix_fw && flash_fw_ver < crbinit_fix_fw &&
1130             NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1131                 dev_err(&pdev->dev, "Incompatibility detected between driver "
1132                         "and firmware version on flash. This configuration "
1133                         "is not recommended. Please update the firmware on "
1134                         "flash immediately\n");
1135                 return -EINVAL;
1136         }
1137
1138         /* check if flashed firmware is newer only for no-mn and P2 case*/
1139         if (!netxen_p3_has_mn(adapter) ||
1140             NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1141                 if (flash_fw_ver > file_fw_ver) {
1142                         dev_info(&pdev->dev, "%s: firmware is older than flash\n",
1143                                 fw_name[fw_type]);
1144                         return -EINVAL;
1145                 }
1146         }
1147
1148         NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
1149         return 0;
1150 }
1151
1152 static void
1153 nx_get_next_fwtype(struct netxen_adapter *adapter)
1154 {
1155         u8 fw_type;
1156
1157         switch (adapter->fw_type) {
1158         case NX_UNKNOWN_ROMIMAGE:
1159                 fw_type = NX_UNIFIED_ROMIMAGE;
1160                 break;
1161
1162         case NX_UNIFIED_ROMIMAGE:
1163                 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id))
1164                         fw_type = NX_FLASH_ROMIMAGE;
1165                 else if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1166                         fw_type = NX_P2_MN_ROMIMAGE;
1167                 else if (netxen_p3_has_mn(adapter))
1168                         fw_type = NX_P3_MN_ROMIMAGE;
1169                 else
1170                         fw_type = NX_P3_CT_ROMIMAGE;
1171                 break;
1172
1173         case NX_P3_MN_ROMIMAGE:
1174                 fw_type = NX_P3_CT_ROMIMAGE;
1175                 break;
1176
1177         case NX_P2_MN_ROMIMAGE:
1178         case NX_P3_CT_ROMIMAGE:
1179         default:
1180                 fw_type = NX_FLASH_ROMIMAGE;
1181                 break;
1182         }
1183
1184         adapter->fw_type = fw_type;
1185 }
1186
1187 static int
1188 netxen_p3_has_mn(struct netxen_adapter *adapter)
1189 {
1190         u32 capability, flashed_ver;
1191         capability = 0;
1192
1193         /* NX2031 always had MN */
1194         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1195                 return 1;
1196
1197         netxen_rom_fast_read(adapter,
1198                         NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
1199         flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
1200
1201         if (flashed_ver >= NETXEN_VERSION_CODE(4, 0, 220)) {
1202
1203                 capability = NXRD32(adapter, NX_PEG_TUNE_CAPABILITY);
1204                 if (capability & NX_PEG_TUNE_MN_PRESENT)
1205                         return 1;
1206         }
1207         return 0;
1208 }
1209
1210 void netxen_request_firmware(struct netxen_adapter *adapter)
1211 {
1212         struct pci_dev *pdev = adapter->pdev;
1213         int rc = 0;
1214
1215         adapter->fw_type = NX_UNKNOWN_ROMIMAGE;
1216
1217 next:
1218         nx_get_next_fwtype(adapter);
1219
1220         if (adapter->fw_type == NX_FLASH_ROMIMAGE) {
1221                 adapter->fw = NULL;
1222         } else {
1223                 rc = request_firmware(&adapter->fw,
1224                                 fw_name[adapter->fw_type], &pdev->dev);
1225                 if (rc != 0)
1226                         goto next;
1227
1228                 rc = netxen_validate_firmware(adapter);
1229                 if (rc != 0) {
1230                         release_firmware(adapter->fw);
1231                         msleep(1);
1232                         goto next;
1233                 }
1234         }
1235 }
1236
1237
1238 void
1239 netxen_release_firmware(struct netxen_adapter *adapter)
1240 {
1241         release_firmware(adapter->fw);
1242         adapter->fw = NULL;
1243 }
1244
1245 int netxen_init_dummy_dma(struct netxen_adapter *adapter)
1246 {
1247         u64 addr;
1248         u32 hi, lo;
1249
1250         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1251                 return 0;
1252
1253         adapter->dummy_dma.addr = pci_alloc_consistent(adapter->pdev,
1254                                  NETXEN_HOST_DUMMY_DMA_SIZE,
1255                                  &adapter->dummy_dma.phys_addr);
1256         if (adapter->dummy_dma.addr == NULL) {
1257                 dev_err(&adapter->pdev->dev,
1258                         "ERROR: Could not allocate dummy DMA memory\n");
1259                 return -ENOMEM;
1260         }
1261
1262         addr = (uint64_t) adapter->dummy_dma.phys_addr;
1263         hi = (addr >> 32) & 0xffffffff;
1264         lo = addr & 0xffffffff;
1265
1266         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
1267         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
1268
1269         return 0;
1270 }
1271
1272 /*
1273  * NetXen DMA watchdog control:
1274  *
1275  *      Bit 0           : enabled => R/O: 1 watchdog active, 0 inactive
1276  *      Bit 1           : disable_request => 1 req disable dma watchdog
1277  *      Bit 2           : enable_request =>  1 req enable dma watchdog
1278  *      Bit 3-31        : unused
1279  */
1280 void netxen_free_dummy_dma(struct netxen_adapter *adapter)
1281 {
1282         int i = 100;
1283         u32 ctrl;
1284
1285         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1286                 return;
1287
1288         if (!adapter->dummy_dma.addr)
1289                 return;
1290
1291         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1292         if ((ctrl & 0x1) != 0) {
1293                 NXWR32(adapter, NETXEN_DMA_WATCHDOG_CTRL, (ctrl | 0x2));
1294
1295                 while ((ctrl & 0x1) != 0) {
1296
1297                         msleep(50);
1298
1299                         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1300
1301                         if (--i == 0)
1302                                 break;
1303                 }
1304         }
1305
1306         if (i) {
1307                 pci_free_consistent(adapter->pdev,
1308                             NETXEN_HOST_DUMMY_DMA_SIZE,
1309                             adapter->dummy_dma.addr,
1310                             adapter->dummy_dma.phys_addr);
1311                 adapter->dummy_dma.addr = NULL;
1312         } else
1313                 dev_err(&adapter->pdev->dev, "dma_watchdog_shutdown failed\n");
1314 }
1315
1316 int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
1317 {
1318         u32 val = 0;
1319         int retries = 60;
1320
1321         if (pegtune_val)
1322                 return 0;
1323
1324         do {
1325                 val = NXRD32(adapter, CRB_CMDPEG_STATE);
1326                 switch (val) {
1327                 case PHAN_INITIALIZE_COMPLETE:
1328                 case PHAN_INITIALIZE_ACK:
1329                         return 0;
1330                 case PHAN_INITIALIZE_FAILED:
1331                         goto out_err;
1332                 default:
1333                         break;
1334                 }
1335
1336                 msleep(500);
1337
1338         } while (--retries);
1339
1340         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
1341
1342 out_err:
1343         dev_warn(&adapter->pdev->dev, "firmware init failed\n");
1344         return -EIO;
1345 }
1346
1347 static int
1348 netxen_receive_peg_ready(struct netxen_adapter *adapter)
1349 {
1350         u32 val = 0;
1351         int retries = 2000;
1352
1353         do {
1354                 val = NXRD32(adapter, CRB_RCVPEG_STATE);
1355
1356                 if (val == PHAN_PEG_RCV_INITIALIZED)
1357                         return 0;
1358
1359                 msleep(10);
1360
1361         } while (--retries);
1362
1363         pr_err("Receive Peg initialization not complete, state: 0x%x.\n", val);
1364         return -EIO;
1365 }
1366
1367 int netxen_init_firmware(struct netxen_adapter *adapter)
1368 {
1369         int err;
1370
1371         err = netxen_receive_peg_ready(adapter);
1372         if (err)
1373                 return err;
1374
1375         NXWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
1376         NXWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
1377         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
1378
1379         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1380                 NXWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
1381
1382         return err;
1383 }
1384
1385 static void
1386 netxen_handle_linkevent(struct netxen_adapter *adapter, nx_fw_msg_t *msg)
1387 {
1388         u32 cable_OUI;
1389         u16 cable_len;
1390         u16 link_speed;
1391         u8  link_status, module, duplex, autoneg;
1392         struct net_device *netdev = adapter->netdev;
1393
1394         adapter->has_link_events = 1;
1395
1396         cable_OUI = msg->body[1] & 0xffffffff;
1397         cable_len = (msg->body[1] >> 32) & 0xffff;
1398         link_speed = (msg->body[1] >> 48) & 0xffff;
1399
1400         link_status = msg->body[2] & 0xff;
1401         duplex = (msg->body[2] >> 16) & 0xff;
1402         autoneg = (msg->body[2] >> 24) & 0xff;
1403
1404         module = (msg->body[2] >> 8) & 0xff;
1405         if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) {
1406                 printk(KERN_INFO "%s: unsupported cable: OUI 0x%x, length %d\n",
1407                                 netdev->name, cable_OUI, cable_len);
1408         } else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) {
1409                 printk(KERN_INFO "%s: unsupported cable length %d\n",
1410                                 netdev->name, cable_len);
1411         }
1412
1413         /* update link parameters */
1414         if (duplex == LINKEVENT_FULL_DUPLEX)
1415                 adapter->link_duplex = DUPLEX_FULL;
1416         else
1417                 adapter->link_duplex = DUPLEX_HALF;
1418         adapter->module_type = module;
1419         adapter->link_autoneg = autoneg;
1420         adapter->link_speed = link_speed;
1421
1422         netxen_advert_link_change(adapter, link_status);
1423 }
1424
1425 static void
1426 netxen_handle_fw_message(int desc_cnt, int index,
1427                 struct nx_host_sds_ring *sds_ring)
1428 {
1429         nx_fw_msg_t msg;
1430         struct status_desc *desc;
1431         int i = 0, opcode;
1432
1433         while (desc_cnt > 0 && i < 8) {
1434                 desc = &sds_ring->desc_head[index];
1435                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1436                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1437
1438                 index = get_next_index(index, sds_ring->num_desc);
1439                 desc_cnt--;
1440         }
1441
1442         opcode = netxen_get_nic_msg_opcode(msg.body[0]);
1443         switch (opcode) {
1444         case NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1445                 netxen_handle_linkevent(sds_ring->adapter, &msg);
1446                 break;
1447         default:
1448                 break;
1449         }
1450 }
1451
1452 static int
1453 netxen_alloc_rx_skb(struct netxen_adapter *adapter,
1454                 struct nx_host_rds_ring *rds_ring,
1455                 struct netxen_rx_buffer *buffer)
1456 {
1457         struct sk_buff *skb;
1458         dma_addr_t dma;
1459         struct pci_dev *pdev = adapter->pdev;
1460
1461         buffer->skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size);
1462         if (!buffer->skb)
1463                 return 1;
1464
1465         skb = buffer->skb;
1466
1467         if (!adapter->ahw.cut_through)
1468                 skb_reserve(skb, 2);
1469
1470         dma = pci_map_single(pdev, skb->data,
1471                         rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1472
1473         if (pci_dma_mapping_error(pdev, dma)) {
1474                 dev_kfree_skb_any(skb);
1475                 buffer->skb = NULL;
1476                 return 1;
1477         }
1478
1479         buffer->skb = skb;
1480         buffer->dma = dma;
1481         buffer->state = NETXEN_BUFFER_BUSY;
1482
1483         return 0;
1484 }
1485
1486 static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
1487                 struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
1488 {
1489         struct netxen_rx_buffer *buffer;
1490         struct sk_buff *skb;
1491
1492         buffer = &rds_ring->rx_buf_arr[index];
1493
1494         pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
1495                         PCI_DMA_FROMDEVICE);
1496
1497         skb = buffer->skb;
1498         if (!skb)
1499                 goto no_skb;
1500
1501         if (likely((adapter->netdev->features & NETIF_F_RXCSUM)
1502             && cksum == STATUS_CKSUM_OK)) {
1503                 adapter->stats.csummed++;
1504                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1505         } else
1506                 skb->ip_summed = CHECKSUM_NONE;
1507
1508         buffer->skb = NULL;
1509 no_skb:
1510         buffer->state = NETXEN_BUFFER_FREE;
1511         return skb;
1512 }
1513
1514 static struct netxen_rx_buffer *
1515 netxen_process_rcv(struct netxen_adapter *adapter,
1516                 struct nx_host_sds_ring *sds_ring,
1517                 int ring, u64 sts_data0)
1518 {
1519         struct net_device *netdev = adapter->netdev;
1520         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1521         struct netxen_rx_buffer *buffer;
1522         struct sk_buff *skb;
1523         struct nx_host_rds_ring *rds_ring;
1524         int index, length, cksum, pkt_offset;
1525
1526         if (unlikely(ring >= adapter->max_rds_rings))
1527                 return NULL;
1528
1529         rds_ring = &recv_ctx->rds_rings[ring];
1530
1531         index = netxen_get_sts_refhandle(sts_data0);
1532         if (unlikely(index >= rds_ring->num_desc))
1533                 return NULL;
1534
1535         buffer = &rds_ring->rx_buf_arr[index];
1536
1537         length = netxen_get_sts_totallength(sts_data0);
1538         cksum  = netxen_get_sts_status(sts_data0);
1539         pkt_offset = netxen_get_sts_pkt_offset(sts_data0);
1540
1541         skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
1542         if (!skb)
1543                 return buffer;
1544
1545         if (length > rds_ring->skb_size)
1546                 skb_put(skb, rds_ring->skb_size);
1547         else
1548                 skb_put(skb, length);
1549
1550
1551         if (pkt_offset)
1552                 skb_pull(skb, pkt_offset);
1553
1554         skb->protocol = eth_type_trans(skb, netdev);
1555
1556         napi_gro_receive(&sds_ring->napi, skb);
1557
1558         adapter->stats.rx_pkts++;
1559         adapter->stats.rxbytes += length;
1560
1561         return buffer;
1562 }
1563
1564 #define TCP_HDR_SIZE            20
1565 #define TCP_TS_OPTION_SIZE      12
1566 #define TCP_TS_HDR_SIZE         (TCP_HDR_SIZE + TCP_TS_OPTION_SIZE)
1567
1568 static struct netxen_rx_buffer *
1569 netxen_process_lro(struct netxen_adapter *adapter,
1570                 struct nx_host_sds_ring *sds_ring,
1571                 int ring, u64 sts_data0, u64 sts_data1)
1572 {
1573         struct net_device *netdev = adapter->netdev;
1574         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1575         struct netxen_rx_buffer *buffer;
1576         struct sk_buff *skb;
1577         struct nx_host_rds_ring *rds_ring;
1578         struct iphdr *iph;
1579         struct tcphdr *th;
1580         bool push, timestamp;
1581         int l2_hdr_offset, l4_hdr_offset;
1582         int index;
1583         u16 lro_length, length, data_offset;
1584         u32 seq_number;
1585         u8 vhdr_len = 0;
1586
1587         if (unlikely(ring >= adapter->max_rds_rings))
1588                 return NULL;
1589
1590         rds_ring = &recv_ctx->rds_rings[ring];
1591
1592         index = netxen_get_lro_sts_refhandle(sts_data0);
1593         if (unlikely(index >= rds_ring->num_desc))
1594                 return NULL;
1595
1596         buffer = &rds_ring->rx_buf_arr[index];
1597
1598         timestamp = netxen_get_lro_sts_timestamp(sts_data0);
1599         lro_length = netxen_get_lro_sts_length(sts_data0);
1600         l2_hdr_offset = netxen_get_lro_sts_l2_hdr_offset(sts_data0);
1601         l4_hdr_offset = netxen_get_lro_sts_l4_hdr_offset(sts_data0);
1602         push = netxen_get_lro_sts_push_flag(sts_data0);
1603         seq_number = netxen_get_lro_sts_seq_number(sts_data1);
1604
1605         skb = netxen_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1606         if (!skb)
1607                 return buffer;
1608
1609         if (timestamp)
1610                 data_offset = l4_hdr_offset + TCP_TS_HDR_SIZE;
1611         else
1612                 data_offset = l4_hdr_offset + TCP_HDR_SIZE;
1613
1614         skb_put(skb, lro_length + data_offset);
1615
1616         skb_pull(skb, l2_hdr_offset);
1617         skb->protocol = eth_type_trans(skb, netdev);
1618
1619         if (skb->protocol == htons(ETH_P_8021Q))
1620                 vhdr_len = VLAN_HLEN;
1621         iph = (struct iphdr *)(skb->data + vhdr_len);
1622         th = (struct tcphdr *)((skb->data + vhdr_len) + (iph->ihl << 2));
1623
1624         length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1625         csum_replace2(&iph->check, iph->tot_len, htons(length));
1626         iph->tot_len = htons(length);
1627         th->psh = push;
1628         th->seq = htonl(seq_number);
1629
1630         length = skb->len;
1631
1632         if (adapter->flags & NETXEN_FW_MSS_CAP)
1633                 skb_shinfo(skb)->gso_size  =  netxen_get_lro_sts_mss(sts_data1);
1634
1635         netif_receive_skb(skb);
1636
1637         adapter->stats.lro_pkts++;
1638         adapter->stats.rxbytes += length;
1639
1640         return buffer;
1641 }
1642
1643 #define netxen_merge_rx_buffers(list, head) \
1644         do { list_splice_tail_init(list, head); } while (0);
1645
1646 int
1647 netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
1648 {
1649         struct netxen_adapter *adapter = sds_ring->adapter;
1650
1651         struct list_head *cur;
1652
1653         struct status_desc *desc;
1654         struct netxen_rx_buffer *rxbuf;
1655
1656         u32 consumer = sds_ring->consumer;
1657
1658         int count = 0;
1659         u64 sts_data0, sts_data1;
1660         int opcode, ring = 0, desc_cnt;
1661
1662         while (count < max) {
1663                 desc = &sds_ring->desc_head[consumer];
1664                 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1665
1666                 if (!(sts_data0 & STATUS_OWNER_HOST))
1667                         break;
1668
1669                 desc_cnt = netxen_get_sts_desc_cnt(sts_data0);
1670
1671                 opcode = netxen_get_sts_opcode(sts_data0);
1672
1673                 switch (opcode) {
1674                 case NETXEN_NIC_RXPKT_DESC:
1675                 case NETXEN_OLD_RXPKT_DESC:
1676                 case NETXEN_NIC_SYN_OFFLOAD:
1677                         ring = netxen_get_sts_type(sts_data0);
1678                         rxbuf = netxen_process_rcv(adapter, sds_ring,
1679                                         ring, sts_data0);
1680                         break;
1681                 case NETXEN_NIC_LRO_DESC:
1682                         ring = netxen_get_lro_sts_type(sts_data0);
1683                         sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1684                         rxbuf = netxen_process_lro(adapter, sds_ring,
1685                                         ring, sts_data0, sts_data1);
1686                         break;
1687                 case NETXEN_NIC_RESPONSE_DESC:
1688                         netxen_handle_fw_message(desc_cnt, consumer, sds_ring);
1689                 default:
1690                         goto skip;
1691                 }
1692
1693                 WARN_ON(desc_cnt > 1);
1694
1695                 if (rxbuf)
1696                         list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1697
1698 skip:
1699                 for (; desc_cnt > 0; desc_cnt--) {
1700                         desc = &sds_ring->desc_head[consumer];
1701                         desc->status_desc_data[0] =
1702                                 cpu_to_le64(STATUS_OWNER_PHANTOM);
1703                         consumer = get_next_index(consumer, sds_ring->num_desc);
1704                 }
1705                 count++;
1706         }
1707
1708         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1709                 struct nx_host_rds_ring *rds_ring =
1710                         &adapter->recv_ctx.rds_rings[ring];
1711
1712                 if (!list_empty(&sds_ring->free_list[ring])) {
1713                         list_for_each(cur, &sds_ring->free_list[ring]) {
1714                                 rxbuf = list_entry(cur,
1715                                                 struct netxen_rx_buffer, list);
1716                                 netxen_alloc_rx_skb(adapter, rds_ring, rxbuf);
1717                         }
1718                         spin_lock(&rds_ring->lock);
1719                         netxen_merge_rx_buffers(&sds_ring->free_list[ring],
1720                                                 &rds_ring->free_list);
1721                         spin_unlock(&rds_ring->lock);
1722                 }
1723
1724                 netxen_post_rx_buffers_nodb(adapter, rds_ring);
1725         }
1726
1727         if (count) {
1728                 sds_ring->consumer = consumer;
1729                 NXWRIO(adapter, sds_ring->crb_sts_consumer, consumer);
1730         }
1731
1732         return count;
1733 }
1734
1735 /* Process Command status ring */
1736 int netxen_process_cmd_ring(struct netxen_adapter *adapter)
1737 {
1738         u32 sw_consumer, hw_consumer;
1739         int count = 0, i;
1740         struct netxen_cmd_buffer *buffer;
1741         struct pci_dev *pdev = adapter->pdev;
1742         struct net_device *netdev = adapter->netdev;
1743         struct netxen_skb_frag *frag;
1744         int done = 0;
1745         struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1746
1747         if (!spin_trylock_bh(&adapter->tx_clean_lock))
1748                 return 1;
1749
1750         sw_consumer = tx_ring->sw_consumer;
1751         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1752
1753         while (sw_consumer != hw_consumer) {
1754                 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1755                 if (buffer->skb) {
1756                         frag = &buffer->frag_array[0];
1757                         pci_unmap_single(pdev, frag->dma, frag->length,
1758                                          PCI_DMA_TODEVICE);
1759                         frag->dma = 0ULL;
1760                         for (i = 1; i < buffer->frag_count; i++) {
1761                                 frag++; /* Get the next frag */
1762                                 pci_unmap_page(pdev, frag->dma, frag->length,
1763                                                PCI_DMA_TODEVICE);
1764                                 frag->dma = 0ULL;
1765                         }
1766
1767                         adapter->stats.xmitfinished++;
1768                         dev_kfree_skb_any(buffer->skb);
1769                         buffer->skb = NULL;
1770                 }
1771
1772                 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1773                 if (++count >= MAX_STATUS_HANDLE)
1774                         break;
1775         }
1776
1777         tx_ring->sw_consumer = sw_consumer;
1778
1779         if (count && netif_running(netdev)) {
1780                 smp_mb();
1781
1782                 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev))
1783                         if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
1784                                 netif_wake_queue(netdev);
1785                 adapter->tx_timeo_cnt = 0;
1786         }
1787         /*
1788          * If everything is freed up to consumer then check if the ring is full
1789          * If the ring is full then check if more needs to be freed and
1790          * schedule the call back again.
1791          *
1792          * This happens when there are 2 CPUs. One could be freeing and the
1793          * other filling it. If the ring is full when we get out of here and
1794          * the card has already interrupted the host then the host can miss the
1795          * interrupt.
1796          *
1797          * There is still a possible race condition and the host could miss an
1798          * interrupt. The card has to take care of this.
1799          */
1800         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1801         done = (sw_consumer == hw_consumer);
1802         spin_unlock_bh(&adapter->tx_clean_lock);
1803
1804         return done;
1805 }
1806
1807 void
1808 netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
1809         struct nx_host_rds_ring *rds_ring)
1810 {
1811         struct rcv_desc *pdesc;
1812         struct netxen_rx_buffer *buffer;
1813         int producer, count = 0;
1814         netxen_ctx_msg msg = 0;
1815         struct list_head *head;
1816
1817         producer = rds_ring->producer;
1818
1819         head = &rds_ring->free_list;
1820         while (!list_empty(head)) {
1821
1822                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1823
1824                 if (!buffer->skb) {
1825                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1826                                 break;
1827                 }
1828
1829                 count++;
1830                 list_del(&buffer->list);
1831
1832                 /* make a rcv descriptor  */
1833                 pdesc = &rds_ring->desc_head[producer];
1834                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1835                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1836                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1837
1838                 producer = get_next_index(producer, rds_ring->num_desc);
1839         }
1840
1841         if (count) {
1842                 rds_ring->producer = producer;
1843                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1844                                 (producer-1) & (rds_ring->num_desc-1));
1845
1846                 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1847                         /*
1848                          * Write a doorbell msg to tell phanmon of change in
1849                          * receive ring producer
1850                          * Only for firmware version < 4.0.0
1851                          */
1852                         netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
1853                         netxen_set_msg_privid(msg);
1854                         netxen_set_msg_count(msg,
1855                                              ((producer - 1) &
1856                                               (rds_ring->num_desc - 1)));
1857                         netxen_set_msg_ctxid(msg, adapter->portnum);
1858                         netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
1859                         NXWRIO(adapter, DB_NORMALIZE(adapter,
1860                                         NETXEN_RCV_PRODUCER_OFFSET), msg);
1861                 }
1862         }
1863 }
1864
1865 static void
1866 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
1867                 struct nx_host_rds_ring *rds_ring)
1868 {
1869         struct rcv_desc *pdesc;
1870         struct netxen_rx_buffer *buffer;
1871         int producer, count = 0;
1872         struct list_head *head;
1873
1874         if (!spin_trylock(&rds_ring->lock))
1875                 return;
1876
1877         producer = rds_ring->producer;
1878
1879         head = &rds_ring->free_list;
1880         while (!list_empty(head)) {
1881
1882                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1883
1884                 if (!buffer->skb) {
1885                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1886                                 break;
1887                 }
1888
1889                 count++;
1890                 list_del(&buffer->list);
1891
1892                 /* make a rcv descriptor  */
1893                 pdesc = &rds_ring->desc_head[producer];
1894                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1895                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1896                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1897
1898                 producer = get_next_index(producer, rds_ring->num_desc);
1899         }
1900
1901         if (count) {
1902                 rds_ring->producer = producer;
1903                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1904                                 (producer - 1) & (rds_ring->num_desc - 1));
1905         }
1906         spin_unlock(&rds_ring->lock);
1907 }
1908
1909 void netxen_nic_clear_stats(struct netxen_adapter *adapter)
1910 {
1911         memset(&adapter->stats, 0, sizeof(adapter->stats));
1912 }
1913