drivers/net/netxen/netxen_nic_init.c

   1 /*
   2  * Copyright (C) 2003 - 2009 NetXen, Inc.
   3  * Copyright (C) 2009 - QLogic Corporation.
   4  * All rights reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  19  * MA  02111-1307, USA.
  20  *
  21  * The full GNU General Public License is included in this distribution
  22  * in the file called "COPYING".
  23  *
  24  */
  25
  26 #include <linux/netdevice.h>
  27 #include <linux/delay.h>
  28 #include <linux/slab.h>
  29 #include "netxen_nic.h"
  30 #include "netxen_nic_hw.h"
  31
  32 struct crb_addr_pair {
  33         u32 addr;
  34         u32 data;
  35 };
  36
  37 #define NETXEN_MAX_CRB_XFORM 60
  38 static unsigned int crb_addr_xform[NETXEN_MAX_CRB_XFORM];
  39 #define NETXEN_ADDR_ERROR (0xffffffff)
  40
  41 #define crb_addr_transform(name) \
  42         crb_addr_xform[NETXEN_HW_PX_MAP_CRB_##name] = \
  43         NETXEN_HW_CRB_HUB_AGT_ADR_##name << 20
  44
  45 #define NETXEN_NIC_XDMA_RESET 0x8000ff
  46
  47 static void
  48 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
  49                 struct nx_host_rds_ring *rds_ring);
  50 static int netxen_p3_has_mn(struct netxen_adapter *adapter);
  51
  52 static void crb_addr_transform_setup(void)
  53 {
  54         crb_addr_transform(XDMA);
  55         crb_addr_transform(TIMR);
  56         crb_addr_transform(SRE);
  57         crb_addr_transform(SQN3);
  58         crb_addr_transform(SQN2);
  59         crb_addr_transform(SQN1);
  60         crb_addr_transform(SQN0);
  61         crb_addr_transform(SQS3);
  62         crb_addr_transform(SQS2);
  63         crb_addr_transform(SQS1);
  64         crb_addr_transform(SQS0);
  65         crb_addr_transform(RPMX7);
  66         crb_addr_transform(RPMX6);
  67         crb_addr_transform(RPMX5);
  68         crb_addr_transform(RPMX4);
  69         crb_addr_transform(RPMX3);
  70         crb_addr_transform(RPMX2);
  71         crb_addr_transform(RPMX1);
  72         crb_addr_transform(RPMX0);
  73         crb_addr_transform(ROMUSB);
  74         crb_addr_transform(SN);
  75         crb_addr_transform(QMN);
  76         crb_addr_transform(QMS);
  77         crb_addr_transform(PGNI);
  78         crb_addr_transform(PGND);
  79         crb_addr_transform(PGN3);
  80         crb_addr_transform(PGN2);
  81         crb_addr_transform(PGN1);
  82         crb_addr_transform(PGN0);
  83         crb_addr_transform(PGSI);
  84         crb_addr_transform(PGSD);
  85         crb_addr_transform(PGS3);
  86         crb_addr_transform(PGS2);
  87         crb_addr_transform(PGS1);
  88         crb_addr_transform(PGS0);
  89         crb_addr_transform(PS);
  90         crb_addr_transform(PH);
  91         crb_addr_transform(NIU);
  92         crb_addr_transform(I2Q);
  93         crb_addr_transform(EG);
  94         crb_addr_transform(MN);
  95         crb_addr_transform(MS);
  96         crb_addr_transform(CAS2);
  97         crb_addr_transform(CAS1);
  98         crb_addr_transform(CAS0);
  99         crb_addr_transform(CAM);
 100         crb_addr_transform(C2C1);
 101         crb_addr_transform(C2C0);
 102         crb_addr_transform(SMB);
 103         crb_addr_transform(OCM0);
 104         crb_addr_transform(I2C0);
 105 }
 106
 107 void netxen_release_rx_buffers(struct netxen_adapter *adapter)
 108 {
 109         struct netxen_recv_context *recv_ctx;
 110         struct nx_host_rds_ring *rds_ring;
 111         struct netxen_rx_buffer *rx_buf;
 112         int i, ring;
 113
 114         recv_ctx = &adapter->recv_ctx;
 115         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 116                 rds_ring = &recv_ctx->rds_rings[ring];
 117                 for (i = 0; i < rds_ring->num_desc; ++i) {
 118                         rx_buf = &(rds_ring->rx_buf_arr[i]);
 119                         if (rx_buf->state == NETXEN_BUFFER_FREE)
 120                                 continue;
 121                         pci_unmap_single(adapter->pdev,
 122                                         rx_buf->dma,
 123                                         rds_ring->dma_size,
 124                                         PCI_DMA_FROMDEVICE);
 125                         if (rx_buf->skb != NULL)
 126                                 dev_kfree_skb_any(rx_buf->skb);
 127                 }
 128         }
 129 }
 130
 131 void netxen_release_tx_buffers(struct netxen_adapter *adapter)
 132 {
 133         struct netxen_cmd_buffer *cmd_buf;
 134         struct netxen_skb_frag *buffrag;
 135         int i, j;
 136         struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
 137
 138         cmd_buf = tx_ring->cmd_buf_arr;
 139         for (i = 0; i < tx_ring->num_desc; i++) {
 140                 buffrag = cmd_buf->frag_array;
 141                 if (buffrag->dma) {
 142                         pci_unmap_single(adapter->pdev, buffrag->dma,
 143                                          buffrag->length, PCI_DMA_TODEVICE);
 144                         buffrag->dma = 0ULL;
 145                 }
 146                 for (j = 0; j < cmd_buf->frag_count; j++) {
 147                         buffrag++;
 148                         if (buffrag->dma) {
 149                                 pci_unmap_page(adapter->pdev, buffrag->dma,
 150                                                buffrag->length,
 151                                                PCI_DMA_TODEVICE);
 152                                 buffrag->dma = 0ULL;
 153                         }
 154                 }
 155                 if (cmd_buf->skb) {
 156                         dev_kfree_skb_any(cmd_buf->skb);
 157                         cmd_buf->skb = NULL;
 158                 }
 159                 cmd_buf++;
 160         }
 161 }
 162
 163 void netxen_free_sw_resources(struct netxen_adapter *adapter)
 164 {
 165         struct netxen_recv_context *recv_ctx;
 166         struct nx_host_rds_ring *rds_ring;
 167         struct nx_host_tx_ring *tx_ring;
 168         int ring;
 169
 170         recv_ctx = &adapter->recv_ctx;
 171
 172         if (recv_ctx->rds_rings == NULL)
 173                 goto skip_rds;
 174
 175         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 176                 rds_ring = &recv_ctx->rds_rings[ring];
 177                 vfree(rds_ring->rx_buf_arr);
 178                 rds_ring->rx_buf_arr = NULL;
 179         }
 180         kfree(recv_ctx->rds_rings);
 181
 182 skip_rds:
 183         if (adapter->tx_ring == NULL)
 184                 return;
 185
 186         tx_ring = adapter->tx_ring;
 187         vfree(tx_ring->cmd_buf_arr);
 188         kfree(tx_ring);
 189         adapter->tx_ring = NULL;
 190 }
 191
 192 int netxen_alloc_sw_resources(struct netxen_adapter *adapter)
 193 {
 194         struct netxen_recv_context *recv_ctx;
 195         struct nx_host_rds_ring *rds_ring;
 196         struct nx_host_sds_ring *sds_ring;
 197         struct nx_host_tx_ring *tx_ring;
 198         struct netxen_rx_buffer *rx_buf;
 199         int ring, i, size;
 200
 201         struct netxen_cmd_buffer *cmd_buf_arr;
 202         struct net_device *netdev = adapter->netdev;
 203         struct pci_dev *pdev = adapter->pdev;
 204
 205         size = sizeof(struct nx_host_tx_ring);
 206         tx_ring = kzalloc(size, GFP_KERNEL);
 207         if (tx_ring == NULL) {
 208                 dev_err(&pdev->dev, "%s: failed to allocate tx ring struct\n",
 209                        netdev->name);
 210                 return -ENOMEM;
 211         }
 212         adapter->tx_ring = tx_ring;
 213
 214         tx_ring->num_desc = adapter->num_txd;
 215         tx_ring->txq = netdev_get_tx_queue(netdev, 0);
 216
 217         cmd_buf_arr = vmalloc(TX_BUFF_RINGSIZE(tx_ring));
 218         if (cmd_buf_arr == NULL) {
 219                 dev_err(&pdev->dev, "%s: failed to allocate cmd buffer ring\n",
 220                        netdev->name);
 221                 return -ENOMEM;
 222         }
 223         memset(cmd_buf_arr, 0, TX_BUFF_RINGSIZE(tx_ring));
 224         tx_ring->cmd_buf_arr = cmd_buf_arr;
 225
 226         recv_ctx = &adapter->recv_ctx;
 227
 228         size = adapter->max_rds_rings * sizeof (struct nx_host_rds_ring);
 229         rds_ring = kzalloc(size, GFP_KERNEL);
 230         if (rds_ring == NULL) {
 231                 dev_err(&pdev->dev, "%s: failed to allocate rds ring struct\n",
 232                        netdev->name);
 233                 return -ENOMEM;
 234         }
 235         recv_ctx->rds_rings = rds_ring;
 236
 237         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 238                 rds_ring = &recv_ctx->rds_rings[ring];
 239                 switch (ring) {
 240                 case RCV_RING_NORMAL:
 241                         rds_ring->num_desc = adapter->num_rxd;
 242                         if (adapter->ahw.cut_through) {
 243                                 rds_ring->dma_size =
 244                                         NX_CT_DEFAULT_RX_BUF_LEN;
 245                                 rds_ring->skb_size =
 246                                         NX_CT_DEFAULT_RX_BUF_LEN;
 247                         } else {
 248                                 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 249                                         rds_ring->dma_size =
 250                                                 NX_P3_RX_BUF_MAX_LEN;
 251                                 else
 252                                         rds_ring->dma_size =
 253                                                 NX_P2_RX_BUF_MAX_LEN;
 254                                 rds_ring->skb_size =
 255                                         rds_ring->dma_size + NET_IP_ALIGN;
 256                         }
 257                         break;
 258
 259                 case RCV_RING_JUMBO:
 260                         rds_ring->num_desc = adapter->num_jumbo_rxd;
 261                         if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 262                                 rds_ring->dma_size =
 263                                         NX_P3_RX_JUMBO_BUF_MAX_LEN;
 264                         else
 265                                 rds_ring->dma_size =
 266                                         NX_P2_RX_JUMBO_BUF_MAX_LEN;
 267
 268                         if (adapter->capabilities & NX_CAP0_HW_LRO)
 269                                 rds_ring->dma_size += NX_LRO_BUFFER_EXTRA;
 270
 271                         rds_ring->skb_size =
 272                                 rds_ring->dma_size + NET_IP_ALIGN;
 273                         break;
 274
 275                 case RCV_RING_LRO:
 276                         rds_ring->num_desc = adapter->num_lro_rxd;
 277                         rds_ring->dma_size = NX_RX_LRO_BUFFER_LENGTH;
 278                         rds_ring->skb_size = rds_ring->dma_size + NET_IP_ALIGN;
 279                         break;
 280
 281                 }
 282                 rds_ring->rx_buf_arr = (struct netxen_rx_buffer *)
 283                         vmalloc(RCV_BUFF_RINGSIZE(rds_ring));
 284                 if (rds_ring->rx_buf_arr == NULL) {
 285                         printk(KERN_ERR "%s: Failed to allocate "
 286                                 "rx buffer ring %d\n",
 287                                 netdev->name, ring);
 288                         /* free whatever was already allocated */
 289                         goto err_out;
 290                 }
 291                 memset(rds_ring->rx_buf_arr, 0, RCV_BUFF_RINGSIZE(rds_ring));
 292                 INIT_LIST_HEAD(&rds_ring->free_list);
 293                 /*
 294                  * Now go through all of them, set reference handles
 295                  * and put them in the queues.
 296                  */
 297                 rx_buf = rds_ring->rx_buf_arr;
 298                 for (i = 0; i < rds_ring->num_desc; i++) {
 299                         list_add_tail(&rx_buf->list,
 300                                         &rds_ring->free_list);
 301                         rx_buf->ref_handle = i;
 302                         rx_buf->state = NETXEN_BUFFER_FREE;
 303                         rx_buf++;
 304                 }
 305                 spin_lock_init(&rds_ring->lock);
 306         }
 307
 308         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 309                 sds_ring = &recv_ctx->sds_rings[ring];
 310                 sds_ring->irq = adapter->msix_entries[ring].vector;
 311                 sds_ring->adapter = adapter;
 312                 sds_ring->num_desc = adapter->num_rxd;
 313
 314                 for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
 315                         INIT_LIST_HEAD(&sds_ring->free_list[i]);
 316         }
 317
 318         return 0;
 319
 320 err_out:
 321         netxen_free_sw_resources(adapter);
 322         return -ENOMEM;
 323 }
 324
 325 /*
 326  * netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
 327  * address to external PCI CRB address.
 328  */
 329 static u32 netxen_decode_crb_addr(u32 addr)
 330 {
 331         int i;
 332         u32 base_addr, offset, pci_base;
 333
 334         crb_addr_transform_setup();
 335
 336         pci_base = NETXEN_ADDR_ERROR;
 337         base_addr = addr & 0xfff00000;
 338         offset = addr & 0x000fffff;
 339
 340         for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
 341                 if (crb_addr_xform[i] == base_addr) {
 342                         pci_base = i << 20;
 343                         break;
 344                 }
 345         }
 346         if (pci_base == NETXEN_ADDR_ERROR)
 347                 return pci_base;
 348         else
 349                 return (pci_base + offset);
 350 }
 351
 352 #define NETXEN_MAX_ROM_WAIT_USEC        100
 353
 354 static int netxen_wait_rom_done(struct netxen_adapter *adapter)
 355 {
 356         long timeout = 0;
 357         long done = 0;
 358
 359         cond_resched();
 360
 361         while (done == 0) {
 362                 done = NXRD32(adapter, NETXEN_ROMUSB_GLB_STATUS);
 363                 done &= 2;
 364                 if (++timeout >= NETXEN_MAX_ROM_WAIT_USEC) {
 365                         dev_err(&adapter->pdev->dev,
 366                                 "Timeout reached  waiting for rom done");
 367                         return -EIO;
 368                 }
 369                 udelay(1);
 370         }
 371         return 0;
 372 }
 373
 374 static int do_rom_fast_read(struct netxen_adapter *adapter,
 375                             int addr, int *valp)
 376 {
 377         NXWR32(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
 378         NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 379         NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
 380         NXWR32(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
 381         if (netxen_wait_rom_done(adapter)) {
 382                 printk("Error waiting for rom done\n");
 383                 return -EIO;
 384         }
 385         /* reset abyte_cnt and dummy_byte_cnt */
 386         NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
 387         udelay(10);
 388         NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 389
 390         *valp = NXRD32(adapter, NETXEN_ROMUSB_ROM_RDATA);
 391         return 0;
 392 }
 393
 394 static int do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 395                                   u8 *bytes, size_t size)
 396 {
 397         int addridx;
 398         int ret = 0;
 399
 400         for (addridx = addr; addridx < (addr + size); addridx += 4) {
 401                 int v;
 402                 ret = do_rom_fast_read(adapter, addridx, &v);
 403                 if (ret != 0)
 404                         break;
 405                 *(__le32 *)bytes = cpu_to_le32(v);
 406                 bytes += 4;
 407         }
 408
 409         return ret;
 410 }
 411
 412 int
 413 netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 414                                 u8 *bytes, size_t size)
 415 {
 416         int ret;
 417
 418         ret = netxen_rom_lock(adapter);
 419         if (ret < 0)
 420                 return ret;
 421
 422         ret = do_rom_fast_read_words(adapter, addr, bytes, size);
 423
 424         netxen_rom_unlock(adapter);
 425         return ret;
 426 }
 427
 428 int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
 429 {
 430         int ret;
 431
 432         if (netxen_rom_lock(adapter) != 0)
 433                 return -EIO;
 434
 435         ret = do_rom_fast_read(adapter, addr, valp);
 436         netxen_rom_unlock(adapter);
 437         return ret;
 438 }
 439
 440 #define NETXEN_BOARDTYPE                0x4008
 441 #define NETXEN_BOARDNUM                 0x400c
 442 #define NETXEN_CHIPNUM                  0x4010
 443
 444 int netxen_pinit_from_rom(struct netxen_adapter *adapter)
 445 {
 446         int addr, val;
 447         int i, n, init_delay = 0;
 448         struct crb_addr_pair *buf;
 449         unsigned offset;
 450         u32 off;
 451
 452         /* resetall */
 453         netxen_rom_lock(adapter);
 454         NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0xffffffff);
 455         netxen_rom_unlock(adapter);
 456
 457         if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 458                 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 459                         (n != 0xcafecafe) ||
 460                         netxen_rom_fast_read(adapter, 4, &n) != 0) {
 461                         printk(KERN_ERR "%s: ERROR Reading crb_init area: "
 462                                         "n: %08x\n", netxen_nic_driver_name, n);
 463                         return -EIO;
 464                 }
 465                 offset = n & 0xffffU;
 466                 n = (n >> 16) & 0xffffU;
 467         } else {
 468                 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 469                         !(n & 0x80000000)) {
 470                         printk(KERN_ERR "%s: ERROR Reading crb_init area: "
 471                                         "n: %08x\n", netxen_nic_driver_name, n);
 472                         return -EIO;
 473                 }
 474                 offset = 1;
 475                 n &= ~0x80000000;
 476         }
 477
 478         if (n >= 1024) {
 479                 printk(KERN_ERR "%s:n=0x%x Error! NetXen card flash not"
 480                        " initialized.\n", __func__, n);
 481                 return -EIO;
 482         }
 483
 484         buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
 485         if (buf == NULL) {
 486                 printk("%s: netxen_pinit_from_rom: Unable to calloc memory.\n",
 487                                 netxen_nic_driver_name);
 488                 return -ENOMEM;
 489         }
 490
 491         for (i = 0; i < n; i++) {
 492                 if (netxen_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
 493                 netxen_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
 494                         kfree(buf);
 495                         return -EIO;
 496                 }
 497
 498                 buf[i].addr = addr;
 499                 buf[i].data = val;
 500
 501         }
 502
 503         for (i = 0; i < n; i++) {
 504
 505                 off = netxen_decode_crb_addr(buf[i].addr);
 506                 if (off == NETXEN_ADDR_ERROR) {
 507                         printk(KERN_ERR"CRB init value out of range %x\n",
 508                                         buf[i].addr);
 509                         continue;
 510                 }
 511                 off += NETXEN_PCI_CRBSPACE;
 512
 513                 if (off & 1)
 514                         continue;
 515
 516                 /* skipping cold reboot MAGIC */
 517                 if (off == NETXEN_CAM_RAM(0x1fc))
 518                         continue;
 519
 520                 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 521                         if (off == (NETXEN_CRB_I2C0 + 0x1c))
 522                                 continue;
 523                         /* do not reset PCI */
 524                         if (off == (ROMUSB_GLB + 0xbc))
 525                                 continue;
 526                         if (off == (ROMUSB_GLB + 0xa8))
 527                                 continue;
 528                         if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
 529                                 continue;
 530                         if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
 531                                 continue;
 532                         if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
 533                                 continue;
 534                         if ((off & 0x0ff00000) == NETXEN_CRB_DDR_NET)
 535                                 continue;
 536                         if (off == (NETXEN_CRB_PEG_NET_1 + 0x18) &&
 537                                 !NX_IS_REVISION_P3P(adapter->ahw.revision_id))
 538                                 buf[i].data = 0x1020;
 539                         /* skip the function enable register */
 540                         if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION))
 541                                 continue;
 542                         if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION2))
 543                                 continue;
 544                         if ((off & 0x0ff00000) == NETXEN_CRB_SMB)
 545                                 continue;
 546                 }
 547
 548                 init_delay = 1;
 549                 /* After writing this register, HW needs time for CRB */
 550                 /* to quiet down (else crb_window returns 0xffffffff) */
 551                 if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
 552                         init_delay = 1000;
 553                         if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 554                                 /* hold xdma in reset also */
 555                                 buf[i].data = NETXEN_NIC_XDMA_RESET;
 556                                 buf[i].data = 0x8000ff;
 557                         }
 558                 }
 559
 560                 NXWR32(adapter, off, buf[i].data);
 561
 562                 msleep(init_delay);
 563         }
 564         kfree(buf);
 565
 566         /* disable_peg_cache_all */
 567
 568         /* unreset_net_cache */
 569         if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 570                 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
 571                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, (val & 0xffffff0f));
 572         }
 573
 574         /* p2dn replyCount */
 575         NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
 576         /* disable_peg_cache 0 */
 577         NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0x4c, 8);
 578         /* disable_peg_cache 1 */
 579         NXWR32(adapter, NETXEN_CRB_PEG_NET_I + 0x4c, 8);
 580
 581         /* peg_clr_all */
 582
 583         /* peg_clr 0 */
 584         NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x8, 0);
 585         NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0xc, 0);
 586         /* peg_clr 1 */
 587         NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0x8, 0);
 588         NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0xc, 0);
 589         /* peg_clr 2 */
 590         NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0x8, 0);
 591         NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0xc, 0);
 592         /* peg_clr 3 */
 593         NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0x8, 0);
 594         NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0xc, 0);
 595         return 0;
 596 }
 597
 598 static struct uni_table_desc *nx_get_table_desc(const u8 *unirom, int section)
 599 {
 600         uint32_t i;
 601         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 602         __le32 entries = cpu_to_le32(directory->num_entries);
 603
 604         for (i = 0; i < entries; i++) {
 605
 606                 __le32 offs = cpu_to_le32(directory->findex) +
 607                                 (i * cpu_to_le32(directory->entry_size));
 608                 __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
 609
 610                 if (tab_type == section)
 611                         return (struct uni_table_desc *) &unirom[offs];
 612         }
 613
 614         return NULL;
 615 }
 616
 617 #define QLCNIC_FILEHEADER_SIZE  (14 * 4)
 618
 619 static int
 620 netxen_nic_validate_header(struct netxen_adapter *adapter)
 621  {
 622         const u8 *unirom = adapter->fw->data;
 623         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 624         u32 fw_file_size = adapter->fw->size;
 625         u32 tab_size;
 626         __le32 entries;
 627         __le32 entry_size;
 628
 629         if (fw_file_size < QLCNIC_FILEHEADER_SIZE)
 630                 return -EINVAL;
 631
 632         entries = cpu_to_le32(directory->num_entries);
 633         entry_size = cpu_to_le32(directory->entry_size);
 634         tab_size = cpu_to_le32(directory->findex) + (entries * entry_size);
 635
 636         if (fw_file_size < tab_size)
 637                 return -EINVAL;
 638
 639         return 0;
 640 }
 641
 642 static int
 643 netxen_nic_validate_bootld(struct netxen_adapter *adapter)
 644 {
 645         struct uni_table_desc *tab_desc;
 646         struct uni_data_desc *descr;
 647         const u8 *unirom = adapter->fw->data;
 648         __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 649                                 NX_UNI_BOOTLD_IDX_OFF));
 650         u32 offs;
 651         u32 tab_size;
 652         u32 data_size;
 653
 654         tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_BOOTLD);
 655
 656         if (!tab_desc)
 657                 return -EINVAL;
 658
 659         tab_size = cpu_to_le32(tab_desc->findex) +
 660                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 661
 662         if (adapter->fw->size < tab_size)
 663                 return -EINVAL;
 664
 665         offs = cpu_to_le32(tab_desc->findex) +
 666                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 667         descr = (struct uni_data_desc *)&unirom[offs];
 668
 669         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 670
 671         if (adapter->fw->size < data_size)
 672                 return -EINVAL;
 673
 674         return 0;
 675 }
 676
 677 static int
 678 netxen_nic_validate_fw(struct netxen_adapter *adapter)
 679 {
 680         struct uni_table_desc *tab_desc;
 681         struct uni_data_desc *descr;
 682         const u8 *unirom = adapter->fw->data;
 683         __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 684                                 NX_UNI_FIRMWARE_IDX_OFF));
 685         u32 offs;
 686         u32 tab_size;
 687         u32 data_size;
 688
 689         tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_FW);
 690
 691         if (!tab_desc)
 692                 return -EINVAL;
 693
 694         tab_size = cpu_to_le32(tab_desc->findex) +
 695                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 696
 697         if (adapter->fw->size < tab_size)
 698                 return -EINVAL;
 699
 700         offs = cpu_to_le32(tab_desc->findex) +
 701                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 702         descr = (struct uni_data_desc *)&unirom[offs];
 703         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 704
 705         if (adapter->fw->size < data_size)
 706                 return -EINVAL;
 707
 708         return 0;
 709 }
 710
 711
 712 static int
 713 netxen_nic_validate_product_offs(struct netxen_adapter *adapter)
 714 {
 715         struct uni_table_desc *ptab_descr;
 716         const u8 *unirom = adapter->fw->data;
 717         int mn_present = (NX_IS_REVISION_P2(adapter->ahw.revision_id)) ?
 718                         1 : netxen_p3_has_mn(adapter);
 719         __le32 entries;
 720         __le32 entry_size;
 721         u32 tab_size;
 722         u32 i;
 723
 724         ptab_descr = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_PRODUCT_TBL);
 725         if (ptab_descr == NULL)
 726                 return -EINVAL;
 727
 728         entries = cpu_to_le32(ptab_descr->num_entries);
 729         entry_size = cpu_to_le32(ptab_descr->entry_size);
 730         tab_size = cpu_to_le32(ptab_descr->findex) + (entries * entry_size);
 731
 732         if (adapter->fw->size < tab_size)
 733                 return -EINVAL;
 734
 735 nomn:
 736         for (i = 0; i < entries; i++) {
 737
 738                 __le32 flags, file_chiprev, offs;
 739                 u8 chiprev = adapter->ahw.revision_id;
 740                 uint32_t flagbit;
 741
 742                 offs = cpu_to_le32(ptab_descr->findex) +
 743                                 (i * cpu_to_le32(ptab_descr->entry_size));
 744                 flags = cpu_to_le32(*((int *)&unirom[offs] + NX_UNI_FLAGS_OFF));
 745                 file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
 746                                                         NX_UNI_CHIP_REV_OFF));
 747
 748                 flagbit = mn_present ? 1 : 2;
 749
 750                 if ((chiprev == file_chiprev) &&
 751                                         ((1ULL << flagbit) & flags)) {
 752                         adapter->file_prd_off = offs;
 753                         return 0;
 754                 }
 755         }
 756
 757         if (mn_present && NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 758                 mn_present = 0;
 759                 goto nomn;
 760         }
 761
 762         return -EINVAL;
 763 }
 764
 765 static int
 766 netxen_nic_validate_unified_romimage(struct netxen_adapter *adapter)
 767 {
 768         if (netxen_nic_validate_header(adapter)) {
 769                 dev_err(&adapter->pdev->dev,
 770                                 "unified image: header validation failed\n");
 771                 return -EINVAL;
 772         }
 773
 774         if (netxen_nic_validate_product_offs(adapter)) {
 775                 dev_err(&adapter->pdev->dev,
 776                                 "unified image: product validation failed\n");
 777                 return -EINVAL;
 778         }
 779
 780         if (netxen_nic_validate_bootld(adapter)) {
 781                 dev_err(&adapter->pdev->dev,
 782                                 "unified image: bootld validation failed\n");
 783                 return -EINVAL;
 784         }
 785
 786         if (netxen_nic_validate_fw(adapter)) {
 787                 dev_err(&adapter->pdev->dev,
 788                                 "unified image: firmware validation failed\n");
 789                 return -EINVAL;
 790         }
 791
 792         return 0;
 793 }
 794
 795 static struct uni_data_desc *nx_get_data_desc(struct netxen_adapter *adapter,
 796                         u32 section, u32 idx_offset)
 797 {
 798         const u8 *unirom = adapter->fw->data;
 799         int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 800                                                                 idx_offset));
 801         struct uni_table_desc *tab_desc;
 802         __le32 offs;
 803
 804         tab_desc = nx_get_table_desc(unirom, section);
 805
 806         if (tab_desc == NULL)
 807                 return NULL;
 808
 809         offs = cpu_to_le32(tab_desc->findex) +
 810                         (cpu_to_le32(tab_desc->entry_size) * idx);
 811
 812         return (struct uni_data_desc *)&unirom[offs];
 813 }
 814
 815 static u8 *
 816 nx_get_bootld_offs(struct netxen_adapter *adapter)
 817 {
 818         u32 offs = NETXEN_BOOTLD_START;
 819
 820         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 821                 offs = cpu_to_le32((nx_get_data_desc(adapter,
 822                                         NX_UNI_DIR_SECT_BOOTLD,
 823                                         NX_UNI_BOOTLD_IDX_OFF))->findex);
 824
 825         return (u8 *)&adapter->fw->data[offs];
 826 }
 827
 828 static u8 *
 829 nx_get_fw_offs(struct netxen_adapter *adapter)
 830 {
 831         u32 offs = NETXEN_IMAGE_START;
 832
 833         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 834                 offs = cpu_to_le32((nx_get_data_desc(adapter,
 835                                         NX_UNI_DIR_SECT_FW,
 836                                         NX_UNI_FIRMWARE_IDX_OFF))->findex);
 837
 838         return (u8 *)&adapter->fw->data[offs];
 839 }
 840
 841 static __le32
 842 nx_get_fw_size(struct netxen_adapter *adapter)
 843 {
 844         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 845                 return cpu_to_le32((nx_get_data_desc(adapter,
 846                                         NX_UNI_DIR_SECT_FW,
 847                                         NX_UNI_FIRMWARE_IDX_OFF))->size);
 848         else
 849                 return cpu_to_le32(
 850                                 *(u32 *)&adapter->fw->data[NX_FW_SIZE_OFFSET]);
 851 }
 852
 853 static __le32
 854 nx_get_fw_version(struct netxen_adapter *adapter)
 855 {
 856         struct uni_data_desc *fw_data_desc;
 857         const struct firmware *fw = adapter->fw;
 858         __le32 major, minor, sub;
 859         const u8 *ver_str;
 860         int i, ret = 0;
 861
 862         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 863
 864                 fw_data_desc = nx_get_data_desc(adapter,
 865                                 NX_UNI_DIR_SECT_FW, NX_UNI_FIRMWARE_IDX_OFF);
 866                 ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
 867                                 cpu_to_le32(fw_data_desc->size) - 17;
 868
 869                 for (i = 0; i < 12; i++) {
 870                         if (!strncmp(&ver_str[i], "REV=", 4)) {
 871                                 ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
 872                                                         &major, &minor, &sub);
 873                                 break;
 874                         }
 875                 }
 876
 877                 if (ret != 3)
 878                         return 0;
 879
 880                 return major + (minor << 8) + (sub << 16);
 881
 882         } else
 883                 return cpu_to_le32(*(u32 *)&fw->data[NX_FW_VERSION_OFFSET]);
 884 }
 885
 886 static __le32
 887 nx_get_bios_version(struct netxen_adapter *adapter)
 888 {
 889         const struct firmware *fw = adapter->fw;
 890         __le32 bios_ver, prd_off = adapter->file_prd_off;
 891
 892         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 893                 bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
 894                                                 + NX_UNI_BIOS_VERSION_OFF));
 895                 return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) +
 896                                                         (bios_ver >> 24);
 897         } else
 898                 return cpu_to_le32(*(u32 *)&fw->data[NX_BIOS_VERSION_OFFSET]);
 899
 900 }
 901
 902 int
 903 netxen_need_fw_reset(struct netxen_adapter *adapter)
 904 {
 905         u32 count, old_count;
 906         u32 val, version, major, minor, build;
 907         int i, timeout;
 908         u8 fw_type;
 909
 910         /* NX2031 firmware doesn't support heartbit */
 911         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 912                 return 1;
 913
 914         if (adapter->need_fw_reset)
 915                 return 1;
 916
 917         /* last attempt had failed */
 918         if (NXRD32(adapter, CRB_CMDPEG_STATE) == PHAN_INITIALIZE_FAILED)
 919                 return 1;
 920
 921         old_count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 922
 923         for (i = 0; i < 10; i++) {
 924
 925                 timeout = msleep_interruptible(200);
 926                 if (timeout) {
 927                         NXWR32(adapter, CRB_CMDPEG_STATE,
 928                                         PHAN_INITIALIZE_FAILED);
 929                         return -EINTR;
 930                 }
 931
 932                 count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 933                 if (count != old_count)
 934                         break;
 935         }
 936
 937         /* firmware is dead */
 938         if (count == old_count)
 939                 return 1;
 940
 941         /* check if we have got newer or different file firmware */
 942         if (adapter->fw) {
 943
 944                 val = nx_get_fw_version(adapter);
 945
 946                 version = NETXEN_DECODE_VERSION(val);
 947
 948                 major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
 949                 minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
 950                 build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
 951
 952                 if (version > NETXEN_VERSION_CODE(major, minor, build))
 953                         return 1;
 954
 955                 if (version == NETXEN_VERSION_CODE(major, minor, build) &&
 956                         adapter->fw_type != NX_UNIFIED_ROMIMAGE) {
 957
 958                         val = NXRD32(adapter, NETXEN_MIU_MN_CONTROL);
 959                         fw_type = (val & 0x4) ?
 960                                 NX_P3_CT_ROMIMAGE : NX_P3_MN_ROMIMAGE;
 961
 962                         if (adapter->fw_type != fw_type)
 963                                 return 1;
 964                 }
 965         }
 966
 967         return 0;
 968 }
 969
 970 static char *fw_name[] = {
 971         NX_P2_MN_ROMIMAGE_NAME,
 972         NX_P3_CT_ROMIMAGE_NAME,
 973         NX_P3_MN_ROMIMAGE_NAME,
 974         NX_UNIFIED_ROMIMAGE_NAME,
 975         NX_FLASH_ROMIMAGE_NAME,
 976 };
 977
 978 int
 979 netxen_load_firmware(struct netxen_adapter *adapter)
 980 {
 981         u64 *ptr64;
 982         u32 i, flashaddr, size;
 983         const struct firmware *fw = adapter->fw;
 984         struct pci_dev *pdev = adapter->pdev;
 985
 986         dev_info(&pdev->dev, "loading firmware from %s\n",
 987                         fw_name[adapter->fw_type]);
 988
 989         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 990                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 1);
 991
 992         if (fw) {
 993                 __le64 data;
 994
 995                 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
 996
 997                 ptr64 = (u64 *)nx_get_bootld_offs(adapter);
 998                 flashaddr = NETXEN_BOOTLD_START;
 999
1000                 for (i = 0; i < size; i++) {
1001                         data = cpu_to_le64(ptr64[i]);
1002
1003                         if (adapter->pci_mem_write(adapter, flashaddr, data))
1004                                 return -EIO;
1005
1006                         flashaddr += 8;
1007                 }
1008
1009                 size = (__force u32)nx_get_fw_size(adapter) / 8;
1010
1011                 ptr64 = (u64 *)nx_get_fw_offs(adapter);
1012                 flashaddr = NETXEN_IMAGE_START;
1013
1014                 for (i = 0; i < size; i++) {
1015                         data = cpu_to_le64(ptr64[i]);
1016
1017                         if (adapter->pci_mem_write(adapter,
1018                                                 flashaddr, data))
1019                                 return -EIO;
1020
1021                         flashaddr += 8;
1022                 }
1023
1024                 size = (__force u32)nx_get_fw_size(adapter) % 8;
1025                 if (size) {
1026                         data = cpu_to_le64(ptr64[i]);
1027
1028                         if (adapter->pci_mem_write(adapter,
1029                                                 flashaddr, data))
1030                                 return -EIO;
1031                 }
1032
1033         } else {
1034                 u64 data;
1035                 u32 hi, lo;
1036
1037                 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
1038                 flashaddr = NETXEN_BOOTLD_START;
1039
1040                 for (i = 0; i < size; i++) {
1041                         if (netxen_rom_fast_read(adapter,
1042                                         flashaddr, (int *)&lo) != 0)
1043                                 return -EIO;
1044                         if (netxen_rom_fast_read(adapter,
1045                                         flashaddr + 4, (int *)&hi) != 0)
1046                                 return -EIO;
1047
1048                         /* hi, lo are already in host endian byteorder */
1049                         data = (((u64)hi << 32) | lo);
1050
1051                         if (adapter->pci_mem_write(adapter,
1052                                                 flashaddr, data))
1053                                 return -EIO;
1054
1055                         flashaddr += 8;
1056                 }
1057         }
1058         msleep(1);
1059
1060         if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
1061                 NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x18, 0x1020);
1062                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001e);
1063         } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1064                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001d);
1065         else {
1066                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CHIP_CLK_CTRL, 0x3fff);
1067                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 0);
1068         }
1069
1070         return 0;
1071 }
1072
1073 static int
1074 netxen_validate_firmware(struct netxen_adapter *adapter)
1075 {
1076         __le32 val;
1077         u32 ver, min_ver, bios;
1078         struct pci_dev *pdev = adapter->pdev;
1079         const struct firmware *fw = adapter->fw;
1080         u8 fw_type = adapter->fw_type;
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_VERSION_CODE(4, 0, 216);
1098         else
1099                 min_ver = NETXEN_VERSION_CODE(3, 4, 216);
1100
1101         ver = NETXEN_DECODE_VERSION(val);
1102
1103         if ((_major(ver) > _NETXEN_NIC_LINUX_MAJOR) || (ver < min_ver)) {
1104                 dev_err(&pdev->dev,
1105                                 "%s: firmware version %d.%d.%d unsupported\n",
1106                 fw_name[fw_type], _major(ver), _minor(ver), _build(ver));
1107                 return -EINVAL;
1108         }
1109
1110         val = nx_get_bios_version(adapter);
1111         netxen_rom_fast_read(adapter, NX_BIOS_VERSION_OFFSET, (int *)&bios);
1112         if ((__force u32)val != bios) {
1113                 dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
1114                                 fw_name[fw_type]);
1115                 return -EINVAL;
1116         }
1117
1118         /* check if flashed firmware is newer */
1119         if (netxen_rom_fast_read(adapter,
1120                         NX_FW_VERSION_OFFSET, (int *)&val))
1121                 return -EIO;
1122         val = NETXEN_DECODE_VERSION(val);
1123         if (val > ver) {
1124                 dev_info(&pdev->dev, "%s: firmware is older than flash\n",
1125                                 fw_name[fw_type]);
1126                 return -EINVAL;
1127         }
1128
1129         NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
1130         return 0;
1131 }
1132
1133 static void
1134 nx_get_next_fwtype(struct netxen_adapter *adapter)
1135 {
1136         u8 fw_type;
1137
1138         switch (adapter->fw_type) {
1139         case NX_UNKNOWN_ROMIMAGE:
1140                 fw_type = NX_UNIFIED_ROMIMAGE;
1141                 break;
1142
1143         case NX_UNIFIED_ROMIMAGE:
1144                 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id))
1145                         fw_type = NX_FLASH_ROMIMAGE;
1146                 else if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1147                         fw_type = NX_P2_MN_ROMIMAGE;
1148                 else if (netxen_p3_has_mn(adapter))
1149                         fw_type = NX_P3_MN_ROMIMAGE;
1150                 else
1151                         fw_type = NX_P3_CT_ROMIMAGE;
1152                 break;
1153
1154         case NX_P3_MN_ROMIMAGE:
1155                 fw_type = NX_P3_CT_ROMIMAGE;
1156                 break;
1157
1158         case NX_P2_MN_ROMIMAGE:
1159         case NX_P3_CT_ROMIMAGE:
1160         default:
1161                 fw_type = NX_FLASH_ROMIMAGE;
1162                 break;
1163         }
1164
1165         adapter->fw_type = fw_type;
1166 }
1167
1168 static int
1169 netxen_p3_has_mn(struct netxen_adapter *adapter)
1170 {
1171         u32 capability, flashed_ver;
1172         capability = 0;
1173
1174         /* NX2031 always had MN */
1175         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1176                 return 1;
1177
1178         netxen_rom_fast_read(adapter,
1179                         NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
1180         flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
1181
1182         if (flashed_ver >= NETXEN_VERSION_CODE(4, 0, 220)) {
1183
1184                 capability = NXRD32(adapter, NX_PEG_TUNE_CAPABILITY);
1185                 if (capability & NX_PEG_TUNE_MN_PRESENT)
1186                         return 1;
1187         }
1188         return 0;
1189 }
1190
1191 void netxen_request_firmware(struct netxen_adapter *adapter)
1192 {
1193         struct pci_dev *pdev = adapter->pdev;
1194         int rc = 0;
1195
1196         adapter->fw_type = NX_UNKNOWN_ROMIMAGE;
1197
1198 next:
1199         nx_get_next_fwtype(adapter);
1200
1201         if (adapter->fw_type == NX_FLASH_ROMIMAGE) {
1202                 adapter->fw = NULL;
1203         } else {
1204                 rc = request_firmware(&adapter->fw,
1205                                 fw_name[adapter->fw_type], &pdev->dev);
1206                 if (rc != 0)
1207                         goto next;
1208
1209                 rc = netxen_validate_firmware(adapter);
1210                 if (rc != 0) {
1211                         release_firmware(adapter->fw);
1212                         msleep(1);
1213                         goto next;
1214                 }
1215         }
1216 }
1217
1218
1219 void
1220 netxen_release_firmware(struct netxen_adapter *adapter)
1221 {
1222         if (adapter->fw)
1223                 release_firmware(adapter->fw);
1224         adapter->fw = NULL;
1225 }
1226
1227 int netxen_init_dummy_dma(struct netxen_adapter *adapter)
1228 {
1229         u64 addr;
1230         u32 hi, lo;
1231
1232         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1233                 return 0;
1234
1235         adapter->dummy_dma.addr = pci_alloc_consistent(adapter->pdev,
1236                                  NETXEN_HOST_DUMMY_DMA_SIZE,
1237                                  &adapter->dummy_dma.phys_addr);
1238         if (adapter->dummy_dma.addr == NULL) {
1239                 dev_err(&adapter->pdev->dev,
1240                         "ERROR: Could not allocate dummy DMA memory\n");
1241                 return -ENOMEM;
1242         }
1243
1244         addr = (uint64_t) adapter->dummy_dma.phys_addr;
1245         hi = (addr >> 32) & 0xffffffff;
1246         lo = addr & 0xffffffff;
1247
1248         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
1249         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
1250
1251         return 0;
1252 }
1253
1254 /*
1255  * NetXen DMA watchdog control:
1256  *
1257  *      Bit 0           : enabled => R/O: 1 watchdog active, 0 inactive
1258  *      Bit 1           : disable_request => 1 req disable dma watchdog
1259  *      Bit 2           : enable_request =>  1 req enable dma watchdog
1260  *      Bit 3-31        : unused
1261  */
1262 void netxen_free_dummy_dma(struct netxen_adapter *adapter)
1263 {
1264         int i = 100;
1265         u32 ctrl;
1266
1267         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1268                 return;
1269
1270         if (!adapter->dummy_dma.addr)
1271                 return;
1272
1273         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1274         if ((ctrl & 0x1) != 0) {
1275                 NXWR32(adapter, NETXEN_DMA_WATCHDOG_CTRL, (ctrl | 0x2));
1276
1277                 while ((ctrl & 0x1) != 0) {
1278
1279                         msleep(50);
1280
1281                         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1282
1283                         if (--i == 0)
1284                                 break;
1285                 };
1286         }
1287
1288         if (i) {
1289                 pci_free_consistent(adapter->pdev,
1290                             NETXEN_HOST_DUMMY_DMA_SIZE,
1291                             adapter->dummy_dma.addr,
1292                             adapter->dummy_dma.phys_addr);
1293                 adapter->dummy_dma.addr = NULL;
1294         } else
1295                 dev_err(&adapter->pdev->dev, "dma_watchdog_shutdown failed\n");
1296 }
1297
1298 int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
1299 {
1300         u32 val = 0;
1301         int retries = 60;
1302
1303         if (pegtune_val)
1304                 return 0;
1305
1306         do {
1307                 val = NXRD32(adapter, CRB_CMDPEG_STATE);
1308
1309                 switch (val) {
1310                 case PHAN_INITIALIZE_COMPLETE:
1311                 case PHAN_INITIALIZE_ACK:
1312                         return 0;
1313                 case PHAN_INITIALIZE_FAILED:
1314                         goto out_err;
1315                 default:
1316                         break;
1317                 }
1318
1319                 msleep(500);
1320
1321         } while (--retries);
1322
1323         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
1324
1325 out_err:
1326         dev_warn(&adapter->pdev->dev, "firmware init failed\n");
1327         return -EIO;
1328 }
1329
1330 static int
1331 netxen_receive_peg_ready(struct netxen_adapter *adapter)
1332 {
1333         u32 val = 0;
1334         int retries = 2000;
1335
1336         do {
1337                 val = NXRD32(adapter, CRB_RCVPEG_STATE);
1338
1339                 if (val == PHAN_PEG_RCV_INITIALIZED)
1340                         return 0;
1341
1342                 msleep(10);
1343
1344         } while (--retries);
1345
1346         if (!retries) {
1347                 printk(KERN_ERR "Receive Peg initialization not "
1348                               "complete, state: 0x%x.\n", val);
1349                 return -EIO;
1350         }
1351
1352         return 0;
1353 }
1354
1355 int netxen_init_firmware(struct netxen_adapter *adapter)
1356 {
1357         int err;
1358
1359         err = netxen_receive_peg_ready(adapter);
1360         if (err)
1361                 return err;
1362
1363         NXWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
1364         NXWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
1365         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
1366
1367         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1368                 NXWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
1369
1370         return err;
1371 }
1372
1373 static void
1374 netxen_handle_linkevent(struct netxen_adapter *adapter, nx_fw_msg_t *msg)
1375 {
1376         u32 cable_OUI;
1377         u16 cable_len;
1378         u16 link_speed;
1379         u8  link_status, module, duplex, autoneg;
1380         struct net_device *netdev = adapter->netdev;
1381
1382         adapter->has_link_events = 1;
1383
1384         cable_OUI = msg->body[1] & 0xffffffff;
1385         cable_len = (msg->body[1] >> 32) & 0xffff;
1386         link_speed = (msg->body[1] >> 48) & 0xffff;
1387
1388         link_status = msg->body[2] & 0xff;
1389         duplex = (msg->body[2] >> 16) & 0xff;
1390         autoneg = (msg->body[2] >> 24) & 0xff;
1391
1392         module = (msg->body[2] >> 8) & 0xff;
1393         if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) {
1394                 printk(KERN_INFO "%s: unsupported cable: OUI 0x%x, length %d\n",
1395                                 netdev->name, cable_OUI, cable_len);
1396         } else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) {
1397                 printk(KERN_INFO "%s: unsupported cable length %d\n",
1398                                 netdev->name, cable_len);
1399         }
1400
1401         netxen_advert_link_change(adapter, link_status);
1402
1403         /* update link parameters */
1404         if (duplex == LINKEVENT_FULL_DUPLEX)
1405                 adapter->link_duplex = DUPLEX_FULL;
1406         else
1407                 adapter->link_duplex = DUPLEX_HALF;
1408         adapter->module_type = module;
1409         adapter->link_autoneg = autoneg;
1410         adapter->link_speed = link_speed;
1411 }
1412
1413 static void
1414 netxen_handle_fw_message(int desc_cnt, int index,
1415                 struct nx_host_sds_ring *sds_ring)
1416 {
1417         nx_fw_msg_t msg;
1418         struct status_desc *desc;
1419         int i = 0, opcode;
1420
1421         while (desc_cnt > 0 && i < 8) {
1422                 desc = &sds_ring->desc_head[index];
1423                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1424                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1425
1426                 index = get_next_index(index, sds_ring->num_desc);
1427                 desc_cnt--;
1428         }
1429
1430         opcode = netxen_get_nic_msg_opcode(msg.body[0]);
1431         switch (opcode) {
1432         case NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1433                 netxen_handle_linkevent(sds_ring->adapter, &msg);
1434                 break;
1435         default:
1436                 break;
1437         }
1438 }
1439
1440 static int
1441 netxen_alloc_rx_skb(struct netxen_adapter *adapter,
1442                 struct nx_host_rds_ring *rds_ring,
1443                 struct netxen_rx_buffer *buffer)
1444 {
1445         struct sk_buff *skb;
1446         dma_addr_t dma;
1447         struct pci_dev *pdev = adapter->pdev;
1448
1449         buffer->skb = dev_alloc_skb(rds_ring->skb_size);
1450         if (!buffer->skb)
1451                 return 1;
1452
1453         skb = buffer->skb;
1454
1455         if (!adapter->ahw.cut_through)
1456                 skb_reserve(skb, 2);
1457
1458         dma = pci_map_single(pdev, skb->data,
1459                         rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1460
1461         if (pci_dma_mapping_error(pdev, dma)) {
1462                 dev_kfree_skb_any(skb);
1463                 buffer->skb = NULL;
1464                 return 1;
1465         }
1466
1467         buffer->skb = skb;
1468         buffer->dma = dma;
1469         buffer->state = NETXEN_BUFFER_BUSY;
1470
1471         return 0;
1472 }
1473
1474 static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
1475                 struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
1476 {
1477         struct netxen_rx_buffer *buffer;
1478         struct sk_buff *skb;
1479
1480         buffer = &rds_ring->rx_buf_arr[index];
1481
1482         pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
1483                         PCI_DMA_FROMDEVICE);
1484
1485         skb = buffer->skb;
1486         if (!skb)
1487                 goto no_skb;
1488
1489         if (likely(adapter->rx_csum && cksum == STATUS_CKSUM_OK)) {
1490                 adapter->stats.csummed++;
1491                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1492         } else
1493                 skb->ip_summed = CHECKSUM_NONE;
1494
1495         skb->dev = adapter->netdev;
1496
1497         buffer->skb = NULL;
1498 no_skb:
1499         buffer->state = NETXEN_BUFFER_FREE;
1500         return skb;
1501 }
1502
1503 static struct netxen_rx_buffer *
1504 netxen_process_rcv(struct netxen_adapter *adapter,
1505                 struct nx_host_sds_ring *sds_ring,
1506                 int ring, u64 sts_data0)
1507 {
1508         struct net_device *netdev = adapter->netdev;
1509         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1510         struct netxen_rx_buffer *buffer;
1511         struct sk_buff *skb;
1512         struct nx_host_rds_ring *rds_ring;
1513         int index, length, cksum, pkt_offset;
1514
1515         if (unlikely(ring >= adapter->max_rds_rings))
1516                 return NULL;
1517
1518         rds_ring = &recv_ctx->rds_rings[ring];
1519
1520         index = netxen_get_sts_refhandle(sts_data0);
1521         if (unlikely(index >= rds_ring->num_desc))
1522                 return NULL;
1523
1524         buffer = &rds_ring->rx_buf_arr[index];
1525
1526         length = netxen_get_sts_totallength(sts_data0);
1527         cksum  = netxen_get_sts_status(sts_data0);
1528         pkt_offset = netxen_get_sts_pkt_offset(sts_data0);
1529
1530         skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
1531         if (!skb)
1532                 return buffer;
1533
1534         if (length > rds_ring->skb_size)
1535                 skb_put(skb, rds_ring->skb_size);
1536         else
1537                 skb_put(skb, length);
1538
1539
1540         if (pkt_offset)
1541                 skb_pull(skb, pkt_offset);
1542
1543         skb->truesize = skb->len + sizeof(struct sk_buff);
1544         skb->protocol = eth_type_trans(skb, netdev);
1545
1546         napi_gro_receive(&sds_ring->napi, skb);
1547
1548         adapter->stats.rx_pkts++;
1549         adapter->stats.rxbytes += length;
1550
1551         return buffer;
1552 }
1553
1554 #define TCP_HDR_SIZE            20
1555 #define TCP_TS_OPTION_SIZE      12
1556 #define TCP_TS_HDR_SIZE         (TCP_HDR_SIZE + TCP_TS_OPTION_SIZE)
1557
1558 static struct netxen_rx_buffer *
1559 netxen_process_lro(struct netxen_adapter *adapter,
1560                 struct nx_host_sds_ring *sds_ring,
1561                 int ring, u64 sts_data0, u64 sts_data1)
1562 {
1563         struct net_device *netdev = adapter->netdev;
1564         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1565         struct netxen_rx_buffer *buffer;
1566         struct sk_buff *skb;
1567         struct nx_host_rds_ring *rds_ring;
1568         struct iphdr *iph;
1569         struct tcphdr *th;
1570         bool push, timestamp;
1571         int l2_hdr_offset, l4_hdr_offset;
1572         int index;
1573         u16 lro_length, length, data_offset;
1574         u32 seq_number;
1575
1576         if (unlikely(ring > adapter->max_rds_rings))
1577                 return NULL;
1578
1579         rds_ring = &recv_ctx->rds_rings[ring];
1580
1581         index = netxen_get_lro_sts_refhandle(sts_data0);
1582         if (unlikely(index > rds_ring->num_desc))
1583                 return NULL;
1584
1585         buffer = &rds_ring->rx_buf_arr[index];
1586
1587         timestamp = netxen_get_lro_sts_timestamp(sts_data0);
1588         lro_length = netxen_get_lro_sts_length(sts_data0);
1589         l2_hdr_offset = netxen_get_lro_sts_l2_hdr_offset(sts_data0);
1590         l4_hdr_offset = netxen_get_lro_sts_l4_hdr_offset(sts_data0);
1591         push = netxen_get_lro_sts_push_flag(sts_data0);
1592         seq_number = netxen_get_lro_sts_seq_number(sts_data1);
1593
1594         skb = netxen_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1595         if (!skb)
1596                 return buffer;
1597
1598         if (timestamp)
1599                 data_offset = l4_hdr_offset + TCP_TS_HDR_SIZE;
1600         else
1601                 data_offset = l4_hdr_offset + TCP_HDR_SIZE;
1602
1603         skb_put(skb, lro_length + data_offset);
1604
1605         skb->truesize = skb->len + sizeof(struct sk_buff) + skb_headroom(skb);
1606
1607         skb_pull(skb, l2_hdr_offset);
1608         skb->protocol = eth_type_trans(skb, netdev);
1609
1610         iph = (struct iphdr *)skb->data;
1611         th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
1612
1613         length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1614         iph->tot_len = htons(length);
1615         iph->check = 0;
1616         iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
1617         th->psh = push;
1618         th->seq = htonl(seq_number);
1619
1620         length = skb->len;
1621
1622         netif_receive_skb(skb);
1623
1624         adapter->stats.lro_pkts++;
1625         adapter->stats.rxbytes += length;
1626
1627         return buffer;
1628 }
1629
1630 #define netxen_merge_rx_buffers(list, head) \
1631         do { list_splice_tail_init(list, head); } while (0);
1632
1633 int
1634 netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
1635 {
1636         struct netxen_adapter *adapter = sds_ring->adapter;
1637
1638         struct list_head *cur;
1639
1640         struct status_desc *desc;
1641         struct netxen_rx_buffer *rxbuf;
1642
1643         u32 consumer = sds_ring->consumer;
1644
1645         int count = 0;
1646         u64 sts_data0, sts_data1;
1647         int opcode, ring = 0, desc_cnt;
1648
1649         while (count < max) {
1650                 desc = &sds_ring->desc_head[consumer];
1651                 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1652
1653                 if (!(sts_data0 & STATUS_OWNER_HOST))
1654                         break;
1655
1656                 desc_cnt = netxen_get_sts_desc_cnt(sts_data0);
1657
1658                 opcode = netxen_get_sts_opcode(sts_data0);
1659
1660                 switch (opcode) {
1661                 case NETXEN_NIC_RXPKT_DESC:
1662                 case NETXEN_OLD_RXPKT_DESC:
1663                 case NETXEN_NIC_SYN_OFFLOAD:
1664                         ring = netxen_get_sts_type(sts_data0);
1665                         rxbuf = netxen_process_rcv(adapter, sds_ring,
1666                                         ring, sts_data0);
1667                         break;
1668                 case NETXEN_NIC_LRO_DESC:
1669                         ring = netxen_get_lro_sts_type(sts_data0);
1670                         sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1671                         rxbuf = netxen_process_lro(adapter, sds_ring,
1672                                         ring, sts_data0, sts_data1);
1673                         break;
1674                 case NETXEN_NIC_RESPONSE_DESC:
1675                         netxen_handle_fw_message(desc_cnt, consumer, sds_ring);
1676                 default:
1677                         goto skip;
1678                 }
1679
1680                 WARN_ON(desc_cnt > 1);
1681
1682                 if (rxbuf)
1683                         list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1684
1685 skip:
1686                 for (; desc_cnt > 0; desc_cnt--) {
1687                         desc = &sds_ring->desc_head[consumer];
1688                         desc->status_desc_data[0] =
1689                                 cpu_to_le64(STATUS_OWNER_PHANTOM);
1690                         consumer = get_next_index(consumer, sds_ring->num_desc);
1691                 }
1692                 count++;
1693         }
1694
1695         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1696                 struct nx_host_rds_ring *rds_ring =
1697                         &adapter->recv_ctx.rds_rings[ring];
1698
1699                 if (!list_empty(&sds_ring->free_list[ring])) {
1700                         list_for_each(cur, &sds_ring->free_list[ring]) {
1701                                 rxbuf = list_entry(cur,
1702                                                 struct netxen_rx_buffer, list);
1703                                 netxen_alloc_rx_skb(adapter, rds_ring, rxbuf);
1704                         }
1705                         spin_lock(&rds_ring->lock);
1706                         netxen_merge_rx_buffers(&sds_ring->free_list[ring],
1707                                                 &rds_ring->free_list);
1708                         spin_unlock(&rds_ring->lock);
1709                 }
1710
1711                 netxen_post_rx_buffers_nodb(adapter, rds_ring);
1712         }
1713
1714         if (count) {
1715                 sds_ring->consumer = consumer;
1716                 NXWRIO(adapter, sds_ring->crb_sts_consumer, consumer);
1717         }
1718
1719         return count;
1720 }
1721
1722 /* Process Command status ring */
1723 int netxen_process_cmd_ring(struct netxen_adapter *adapter)
1724 {
1725         u32 sw_consumer, hw_consumer;
1726         int count = 0, i;
1727         struct netxen_cmd_buffer *buffer;
1728         struct pci_dev *pdev = adapter->pdev;
1729         struct net_device *netdev = adapter->netdev;
1730         struct netxen_skb_frag *frag;
1731         int done = 0;
1732         struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1733
1734         if (!spin_trylock(&adapter->tx_clean_lock))
1735                 return 1;
1736
1737         sw_consumer = tx_ring->sw_consumer;
1738         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1739
1740         while (sw_consumer != hw_consumer) {
1741                 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1742                 if (buffer->skb) {
1743                         frag = &buffer->frag_array[0];
1744                         pci_unmap_single(pdev, frag->dma, frag->length,
1745                                          PCI_DMA_TODEVICE);
1746                         frag->dma = 0ULL;
1747                         for (i = 1; i < buffer->frag_count; i++) {
1748                                 frag++; /* Get the next frag */
1749                                 pci_unmap_page(pdev, frag->dma, frag->length,
1750                                                PCI_DMA_TODEVICE);
1751                                 frag->dma = 0ULL;
1752                         }
1753
1754                         adapter->stats.xmitfinished++;
1755                         dev_kfree_skb_any(buffer->skb);
1756                         buffer->skb = NULL;
1757                 }
1758
1759                 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1760                 if (++count >= MAX_STATUS_HANDLE)
1761                         break;
1762         }
1763
1764         if (count && netif_running(netdev)) {
1765                 tx_ring->sw_consumer = sw_consumer;
1766
1767                 smp_mb();
1768
1769                 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
1770                         __netif_tx_lock(tx_ring->txq, smp_processor_id());
1771                         if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH) {
1772                                 netif_wake_queue(netdev);
1773                                 adapter->tx_timeo_cnt = 0;
1774                         }
1775                         __netif_tx_unlock(tx_ring->txq);
1776                 }
1777         }
1778         /*
1779          * If everything is freed up to consumer then check if the ring is full
1780          * If the ring is full then check if more needs to be freed and
1781          * schedule the call back again.
1782          *
1783          * This happens when there are 2 CPUs. One could be freeing and the
1784          * other filling it. If the ring is full when we get out of here and
1785          * the card has already interrupted the host then the host can miss the
1786          * interrupt.
1787          *
1788          * There is still a possible race condition and the host could miss an
1789          * interrupt. The card has to take care of this.
1790          */
1791         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1792         done = (sw_consumer == hw_consumer);
1793         spin_unlock(&adapter->tx_clean_lock);
1794
1795         return (done);
1796 }
1797
1798 void
1799 netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
1800         struct nx_host_rds_ring *rds_ring)
1801 {
1802         struct rcv_desc *pdesc;
1803         struct netxen_rx_buffer *buffer;
1804         int producer, count = 0;
1805         netxen_ctx_msg msg = 0;
1806         struct list_head *head;
1807
1808         producer = rds_ring->producer;
1809
1810         spin_lock(&rds_ring->lock);
1811         head = &rds_ring->free_list;
1812         while (!list_empty(head)) {
1813
1814                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1815
1816                 if (!buffer->skb) {
1817                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1818                                 break;
1819                 }
1820
1821                 count++;
1822                 list_del(&buffer->list);
1823
1824                 /* make a rcv descriptor  */
1825                 pdesc = &rds_ring->desc_head[producer];
1826                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1827                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1828                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1829
1830                 producer = get_next_index(producer, rds_ring->num_desc);
1831         }
1832         spin_unlock(&rds_ring->lock);
1833
1834         if (count) {
1835                 rds_ring->producer = producer;
1836                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1837                                 (producer-1) & (rds_ring->num_desc-1));
1838
1839                 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1840                         /*
1841                          * Write a doorbell msg to tell phanmon of change in
1842                          * receive ring producer
1843                          * Only for firmware version < 4.0.0
1844                          */
1845                         netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
1846                         netxen_set_msg_privid(msg);
1847                         netxen_set_msg_count(msg,
1848                                              ((producer - 1) &
1849                                               (rds_ring->num_desc - 1)));
1850                         netxen_set_msg_ctxid(msg, adapter->portnum);
1851                         netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
1852                         NXWRIO(adapter, DB_NORMALIZE(adapter,
1853                                         NETXEN_RCV_PRODUCER_OFFSET), msg);
1854                 }
1855         }
1856 }
1857
1858 static void
1859 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
1860                 struct nx_host_rds_ring *rds_ring)
1861 {
1862         struct rcv_desc *pdesc;
1863         struct netxen_rx_buffer *buffer;
1864         int producer, count = 0;
1865         struct list_head *head;
1866
1867         producer = rds_ring->producer;
1868         if (!spin_trylock(&rds_ring->lock))
1869                 return;
1870
1871         head = &rds_ring->free_list;
1872         while (!list_empty(head)) {
1873
1874                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1875
1876                 if (!buffer->skb) {
1877                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1878                                 break;
1879                 }
1880
1881                 count++;
1882                 list_del(&buffer->list);
1883
1884                 /* make a rcv descriptor  */
1885                 pdesc = &rds_ring->desc_head[producer];
1886                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1887                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1888                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1889
1890                 producer = get_next_index(producer, rds_ring->num_desc);
1891         }
1892
1893         if (count) {
1894                 rds_ring->producer = producer;
1895                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1896                                 (producer - 1) & (rds_ring->num_desc - 1));
1897         }
1898         spin_unlock(&rds_ring->lock);
1899 }
1900
1901 void netxen_nic_clear_stats(struct netxen_adapter *adapter)
1902 {
1903         memset(&adapter->stats, 0, sizeof(adapter->stats));
1904         return;
1905 }
1906