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