Pileus Git - ~andy/linux/blob - drivers/net/ethernet/qlogic/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, see <http://www.gnu.org/licenses/>.
  18  *
  19  * The full GNU General Public License is included in this distribution
  20  * in the file called "COPYING".
  21  *
  22  */
  23
  24 #include <linux/netdevice.h>
  25 #include <linux/delay.h>
  26 #include <linux/slab.h>
  27 #include <linux/if_vlan.h>
  28 #include <net/checksum.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 = 1; 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;
 200
 201         struct netxen_cmd_buffer *cmd_buf_arr;
 202         struct net_device *netdev = adapter->netdev;
 203
 204         tx_ring = kzalloc(sizeof(struct nx_host_tx_ring), GFP_KERNEL);
 205         if (tx_ring == NULL)
 206                 return -ENOMEM;
 207
 208         adapter->tx_ring = tx_ring;
 209
 210         tx_ring->num_desc = adapter->num_txd;
 211         tx_ring->txq = netdev_get_tx_queue(netdev, 0);
 212
 213         cmd_buf_arr = vzalloc(TX_BUFF_RINGSIZE(tx_ring));
 214         if (cmd_buf_arr == NULL)
 215                 goto err_out;
 216
 217         tx_ring->cmd_buf_arr = cmd_buf_arr;
 218
 219         recv_ctx = &adapter->recv_ctx;
 220
 221         rds_ring = kcalloc(adapter->max_rds_rings,
 222                            sizeof(struct nx_host_rds_ring), GFP_KERNEL);
 223         if (rds_ring == NULL)
 224                 goto err_out;
 225
 226         recv_ctx->rds_rings = rds_ring;
 227
 228         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 229                 rds_ring = &recv_ctx->rds_rings[ring];
 230                 switch (ring) {
 231                 case RCV_RING_NORMAL:
 232                         rds_ring->num_desc = adapter->num_rxd;
 233                         if (adapter->ahw.cut_through) {
 234                                 rds_ring->dma_size =
 235                                         NX_CT_DEFAULT_RX_BUF_LEN;
 236                                 rds_ring->skb_size =
 237                                         NX_CT_DEFAULT_RX_BUF_LEN;
 238                         } else {
 239                                 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 240                                         rds_ring->dma_size =
 241                                                 NX_P3_RX_BUF_MAX_LEN;
 242                                 else
 243                                         rds_ring->dma_size =
 244                                                 NX_P2_RX_BUF_MAX_LEN;
 245                                 rds_ring->skb_size =
 246                                         rds_ring->dma_size + NET_IP_ALIGN;
 247                         }
 248                         break;
 249
 250                 case RCV_RING_JUMBO:
 251                         rds_ring->num_desc = adapter->num_jumbo_rxd;
 252                         if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 253                                 rds_ring->dma_size =
 254                                         NX_P3_RX_JUMBO_BUF_MAX_LEN;
 255                         else
 256                                 rds_ring->dma_size =
 257                                         NX_P2_RX_JUMBO_BUF_MAX_LEN;
 258
 259                         if (adapter->capabilities & NX_CAP0_HW_LRO)
 260                                 rds_ring->dma_size += NX_LRO_BUFFER_EXTRA;
 261
 262                         rds_ring->skb_size =
 263                                 rds_ring->dma_size + NET_IP_ALIGN;
 264                         break;
 265
 266                 case RCV_RING_LRO:
 267                         rds_ring->num_desc = adapter->num_lro_rxd;
 268                         rds_ring->dma_size = NX_RX_LRO_BUFFER_LENGTH;
 269                         rds_ring->skb_size = rds_ring->dma_size + NET_IP_ALIGN;
 270                         break;
 271
 272                 }
 273                 rds_ring->rx_buf_arr = vzalloc(RCV_BUFF_RINGSIZE(rds_ring));
 274                 if (rds_ring->rx_buf_arr == NULL)
 275                         /* free whatever was already allocated */
 276                         goto err_out;
 277
 278                 INIT_LIST_HEAD(&rds_ring->free_list);
 279                 /*
 280                  * Now go through all of them, set reference handles
 281                  * and put them in the queues.
 282                  */
 283                 rx_buf = rds_ring->rx_buf_arr;
 284                 for (i = 0; i < rds_ring->num_desc; i++) {
 285                         list_add_tail(&rx_buf->list,
 286                                         &rds_ring->free_list);
 287                         rx_buf->ref_handle = i;
 288                         rx_buf->state = NETXEN_BUFFER_FREE;
 289                         rx_buf++;
 290                 }
 291                 spin_lock_init(&rds_ring->lock);
 292         }
 293
 294         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 295                 sds_ring = &recv_ctx->sds_rings[ring];
 296                 sds_ring->irq = adapter->msix_entries[ring].vector;
 297                 sds_ring->adapter = adapter;
 298                 sds_ring->num_desc = adapter->num_rxd;
 299
 300                 for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
 301                         INIT_LIST_HEAD(&sds_ring->free_list[i]);
 302         }
 303
 304         return 0;
 305
 306 err_out:
 307         netxen_free_sw_resources(adapter);
 308         return -ENOMEM;
 309 }
 310
 311 /*
 312  * netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
 313  * address to external PCI CRB address.
 314  */
 315 static u32 netxen_decode_crb_addr(u32 addr)
 316 {
 317         int i;
 318         u32 base_addr, offset, pci_base;
 319
 320         crb_addr_transform_setup();
 321
 322         pci_base = NETXEN_ADDR_ERROR;
 323         base_addr = addr & 0xfff00000;
 324         offset = addr & 0x000fffff;
 325
 326         for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
 327                 if (crb_addr_xform[i] == base_addr) {
 328                         pci_base = i << 20;
 329                         break;
 330                 }
 331         }
 332         if (pci_base == NETXEN_ADDR_ERROR)
 333                 return pci_base;
 334         else
 335                 return pci_base + offset;
 336 }
 337
 338 #define NETXEN_MAX_ROM_WAIT_USEC        100
 339
 340 static int netxen_wait_rom_done(struct netxen_adapter *adapter)
 341 {
 342         long timeout = 0;
 343         long done = 0;
 344
 345         cond_resched();
 346
 347         while (done == 0) {
 348                 done = NXRD32(adapter, NETXEN_ROMUSB_GLB_STATUS);
 349                 done &= 2;
 350                 if (++timeout >= NETXEN_MAX_ROM_WAIT_USEC) {
 351                         dev_err(&adapter->pdev->dev,
 352                                 "Timeout reached  waiting for rom done");
 353                         return -EIO;
 354                 }
 355                 udelay(1);
 356         }
 357         return 0;
 358 }
 359
 360 static int do_rom_fast_read(struct netxen_adapter *adapter,
 361                             int addr, int *valp)
 362 {
 363         NXWR32(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
 364         NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 365         NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
 366         NXWR32(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
 367         if (netxen_wait_rom_done(adapter)) {
 368                 printk("Error waiting for rom done\n");
 369                 return -EIO;
 370         }
 371         /* reset abyte_cnt and dummy_byte_cnt */
 372         NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
 373         udelay(10);
 374         NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 375
 376         *valp = NXRD32(adapter, NETXEN_ROMUSB_ROM_RDATA);
 377         return 0;
 378 }
 379
 380 static int do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 381                                   u8 *bytes, size_t size)
 382 {
 383         int addridx;
 384         int ret = 0;
 385
 386         for (addridx = addr; addridx < (addr + size); addridx += 4) {
 387                 int v;
 388                 ret = do_rom_fast_read(adapter, addridx, &v);
 389                 if (ret != 0)
 390                         break;
 391                 *(__le32 *)bytes = cpu_to_le32(v);
 392                 bytes += 4;
 393         }
 394
 395         return ret;
 396 }
 397
 398 int
 399 netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 400                                 u8 *bytes, size_t size)
 401 {
 402         int ret;
 403
 404         ret = netxen_rom_lock(adapter);
 405         if (ret < 0)
 406                 return ret;
 407
 408         ret = do_rom_fast_read_words(adapter, addr, bytes, size);
 409
 410         netxen_rom_unlock(adapter);
 411         return ret;
 412 }
 413
 414 int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
 415 {
 416         int ret;
 417
 418         if (netxen_rom_lock(adapter) != 0)
 419                 return -EIO;
 420
 421         ret = do_rom_fast_read(adapter, addr, valp);
 422         netxen_rom_unlock(adapter);
 423         return ret;
 424 }
 425
 426 #define NETXEN_BOARDTYPE                0x4008
 427 #define NETXEN_BOARDNUM                 0x400c
 428 #define NETXEN_CHIPNUM                  0x4010
 429
 430 int netxen_pinit_from_rom(struct netxen_adapter *adapter)
 431 {
 432         int addr, val;
 433         int i, n, init_delay = 0;
 434         struct crb_addr_pair *buf;
 435         unsigned offset;
 436         u32 off;
 437
 438         /* resetall */
 439         netxen_rom_lock(adapter);
 440         NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0xfeffffff);
 441         netxen_rom_unlock(adapter);
 442
 443         if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 444                 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 445                         (n != 0xcafecafe) ||
 446                         netxen_rom_fast_read(adapter, 4, &n) != 0) {
 447                         printk(KERN_ERR "%s: ERROR Reading crb_init area: "
 448                                         "n: %08x\n", netxen_nic_driver_name, n);
 449                         return -EIO;
 450                 }
 451                 offset = n & 0xffffU;
 452                 n = (n >> 16) & 0xffffU;
 453         } else {
 454                 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 455                         !(n & 0x80000000)) {
 456                         printk(KERN_ERR "%s: ERROR Reading crb_init area: "
 457                                         "n: %08x\n", netxen_nic_driver_name, n);
 458                         return -EIO;
 459                 }
 460                 offset = 1;
 461                 n &= ~0x80000000;
 462         }
 463
 464         if (n >= 1024) {
 465                 printk(KERN_ERR "%s:n=0x%x Error! NetXen card flash not"
 466                        " initialized.\n", __func__, n);
 467                 return -EIO;
 468         }
 469
 470         buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
 471         if (buf == NULL)
 472                 return -ENOMEM;
 473
 474         for (i = 0; i < n; i++) {
 475                 if (netxen_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
 476                 netxen_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
 477                         kfree(buf);
 478                         return -EIO;
 479                 }
 480
 481                 buf[i].addr = addr;
 482                 buf[i].data = val;
 483
 484         }
 485
 486         for (i = 0; i < n; i++) {
 487
 488                 off = netxen_decode_crb_addr(buf[i].addr);
 489                 if (off == NETXEN_ADDR_ERROR) {
 490                         printk(KERN_ERR"CRB init value out of range %x\n",
 491                                         buf[i].addr);
 492                         continue;
 493                 }
 494                 off += NETXEN_PCI_CRBSPACE;
 495
 496                 if (off & 1)
 497                         continue;
 498
 499                 /* skipping cold reboot MAGIC */
 500                 if (off == NETXEN_CAM_RAM(0x1fc))
 501                         continue;
 502
 503                 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 504                         if (off == (NETXEN_CRB_I2C0 + 0x1c))
 505                                 continue;
 506                         /* do not reset PCI */
 507                         if (off == (ROMUSB_GLB + 0xbc))
 508                                 continue;
 509                         if (off == (ROMUSB_GLB + 0xa8))
 510                                 continue;
 511                         if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
 512                                 continue;
 513                         if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
 514                                 continue;
 515                         if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
 516                                 continue;
 517                         if ((off & 0x0ff00000) == NETXEN_CRB_DDR_NET)
 518                                 continue;
 519                         if (off == (NETXEN_CRB_PEG_NET_1 + 0x18) &&
 520                                 !NX_IS_REVISION_P3P(adapter->ahw.revision_id))
 521                                 buf[i].data = 0x1020;
 522                         /* skip the function enable register */
 523                         if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION))
 524                                 continue;
 525                         if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION2))
 526                                 continue;
 527                         if ((off & 0x0ff00000) == NETXEN_CRB_SMB)
 528                                 continue;
 529                 }
 530
 531                 init_delay = 1;
 532                 /* After writing this register, HW needs time for CRB */
 533                 /* to quiet down (else crb_window returns 0xffffffff) */
 534                 if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
 535                         init_delay = 1000;
 536                         if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 537                                 /* hold xdma in reset also */
 538                                 buf[i].data = NETXEN_NIC_XDMA_RESET;
 539                                 buf[i].data = 0x8000ff;
 540                         }
 541                 }
 542
 543                 NXWR32(adapter, off, buf[i].data);
 544
 545                 msleep(init_delay);
 546         }
 547         kfree(buf);
 548
 549         /* disable_peg_cache_all */
 550
 551         /* unreset_net_cache */
 552         if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 553                 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
 554                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, (val & 0xffffff0f));
 555         }
 556
 557         /* p2dn replyCount */
 558         NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
 559         /* disable_peg_cache 0 */
 560         NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0x4c, 8);
 561         /* disable_peg_cache 1 */
 562         NXWR32(adapter, NETXEN_CRB_PEG_NET_I + 0x4c, 8);
 563
 564         /* peg_clr_all */
 565
 566         /* peg_clr 0 */
 567         NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x8, 0);
 568         NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0xc, 0);
 569         /* peg_clr 1 */
 570         NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0x8, 0);
 571         NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0xc, 0);
 572         /* peg_clr 2 */
 573         NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0x8, 0);
 574         NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0xc, 0);
 575         /* peg_clr 3 */
 576         NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0x8, 0);
 577         NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0xc, 0);
 578         return 0;
 579 }
 580
 581 static struct uni_table_desc *nx_get_table_desc(const u8 *unirom, int section)
 582 {
 583         uint32_t i;
 584         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 585         __le32 entries = cpu_to_le32(directory->num_entries);
 586
 587         for (i = 0; i < entries; i++) {
 588
 589                 __le32 offs = cpu_to_le32(directory->findex) +
 590                                 (i * cpu_to_le32(directory->entry_size));
 591                 __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
 592
 593                 if (tab_type == section)
 594                         return (struct uni_table_desc *) &unirom[offs];
 595         }
 596
 597         return NULL;
 598 }
 599
 600 #define QLCNIC_FILEHEADER_SIZE  (14 * 4)
 601
 602 static int
 603 netxen_nic_validate_header(struct netxen_adapter *adapter)
 604  {
 605         const u8 *unirom = adapter->fw->data;
 606         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 607         u32 fw_file_size = adapter->fw->size;
 608         u32 tab_size;
 609         __le32 entries;
 610         __le32 entry_size;
 611
 612         if (fw_file_size < QLCNIC_FILEHEADER_SIZE)
 613                 return -EINVAL;
 614
 615         entries = cpu_to_le32(directory->num_entries);
 616         entry_size = cpu_to_le32(directory->entry_size);
 617         tab_size = cpu_to_le32(directory->findex) + (entries * entry_size);
 618
 619         if (fw_file_size < tab_size)
 620                 return -EINVAL;
 621
 622         return 0;
 623 }
 624
 625 static int
 626 netxen_nic_validate_bootld(struct netxen_adapter *adapter)
 627 {
 628         struct uni_table_desc *tab_desc;
 629         struct uni_data_desc *descr;
 630         const u8 *unirom = adapter->fw->data;
 631         __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 632                                 NX_UNI_BOOTLD_IDX_OFF));
 633         u32 offs;
 634         u32 tab_size;
 635         u32 data_size;
 636
 637         tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_BOOTLD);
 638
 639         if (!tab_desc)
 640                 return -EINVAL;
 641
 642         tab_size = cpu_to_le32(tab_desc->findex) +
 643                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 644
 645         if (adapter->fw->size < tab_size)
 646                 return -EINVAL;
 647
 648         offs = cpu_to_le32(tab_desc->findex) +
 649                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 650         descr = (struct uni_data_desc *)&unirom[offs];
 651
 652         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 653
 654         if (adapter->fw->size < data_size)
 655                 return -EINVAL;
 656
 657         return 0;
 658 }
 659
 660 static int
 661 netxen_nic_validate_fw(struct netxen_adapter *adapter)
 662 {
 663         struct uni_table_desc *tab_desc;
 664         struct uni_data_desc *descr;
 665         const u8 *unirom = adapter->fw->data;
 666         __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 667                                 NX_UNI_FIRMWARE_IDX_OFF));
 668         u32 offs;
 669         u32 tab_size;
 670         u32 data_size;
 671
 672         tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_FW);
 673
 674         if (!tab_desc)
 675                 return -EINVAL;
 676
 677         tab_size = cpu_to_le32(tab_desc->findex) +
 678                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 679
 680         if (adapter->fw->size < tab_size)
 681                 return -EINVAL;
 682
 683         offs = cpu_to_le32(tab_desc->findex) +
 684                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 685         descr = (struct uni_data_desc *)&unirom[offs];
 686         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 687
 688         if (adapter->fw->size < data_size)
 689                 return -EINVAL;
 690
 691         return 0;
 692 }
 693
 694
 695 static int
 696 netxen_nic_validate_product_offs(struct netxen_adapter *adapter)
 697 {
 698         struct uni_table_desc *ptab_descr;
 699         const u8 *unirom = adapter->fw->data;
 700         int mn_present = (NX_IS_REVISION_P2(adapter->ahw.revision_id)) ?
 701                         1 : netxen_p3_has_mn(adapter);
 702         __le32 entries;
 703         __le32 entry_size;
 704         u32 tab_size;
 705         u32 i;
 706
 707         ptab_descr = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_PRODUCT_TBL);
 708         if (ptab_descr == NULL)
 709                 return -EINVAL;
 710
 711         entries = cpu_to_le32(ptab_descr->num_entries);
 712         entry_size = cpu_to_le32(ptab_descr->entry_size);
 713         tab_size = cpu_to_le32(ptab_descr->findex) + (entries * entry_size);
 714
 715         if (adapter->fw->size < tab_size)
 716                 return -EINVAL;
 717
 718 nomn:
 719         for (i = 0; i < entries; i++) {
 720
 721                 __le32 flags, file_chiprev, offs;
 722                 u8 chiprev = adapter->ahw.revision_id;
 723                 uint32_t flagbit;
 724
 725                 offs = cpu_to_le32(ptab_descr->findex) +
 726                                 (i * cpu_to_le32(ptab_descr->entry_size));
 727                 flags = cpu_to_le32(*((int *)&unirom[offs] + NX_UNI_FLAGS_OFF));
 728                 file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
 729                                                         NX_UNI_CHIP_REV_OFF));
 730
 731                 flagbit = mn_present ? 1 : 2;
 732
 733                 if ((chiprev == file_chiprev) &&
 734                                         ((1ULL << flagbit) & flags)) {
 735                         adapter->file_prd_off = offs;
 736                         return 0;
 737                 }
 738         }
 739
 740         if (mn_present && NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 741                 mn_present = 0;
 742                 goto nomn;
 743         }
 744
 745         return -EINVAL;
 746 }
 747
 748 static int
 749 netxen_nic_validate_unified_romimage(struct netxen_adapter *adapter)
 750 {
 751         if (netxen_nic_validate_header(adapter)) {
 752                 dev_err(&adapter->pdev->dev,
 753                                 "unified image: header validation failed\n");
 754                 return -EINVAL;
 755         }
 756
 757         if (netxen_nic_validate_product_offs(adapter)) {
 758                 dev_err(&adapter->pdev->dev,
 759                                 "unified image: product validation failed\n");
 760                 return -EINVAL;
 761         }
 762
 763         if (netxen_nic_validate_bootld(adapter)) {
 764                 dev_err(&adapter->pdev->dev,
 765                                 "unified image: bootld validation failed\n");
 766                 return -EINVAL;
 767         }
 768
 769         if (netxen_nic_validate_fw(adapter)) {
 770                 dev_err(&adapter->pdev->dev,
 771                                 "unified image: firmware validation failed\n");
 772                 return -EINVAL;
 773         }
 774
 775         return 0;
 776 }
 777
 778 static struct uni_data_desc *nx_get_data_desc(struct netxen_adapter *adapter,
 779                         u32 section, u32 idx_offset)
 780 {
 781         const u8 *unirom = adapter->fw->data;
 782         int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 783                                                                 idx_offset));
 784         struct uni_table_desc *tab_desc;
 785         __le32 offs;
 786
 787         tab_desc = nx_get_table_desc(unirom, section);
 788
 789         if (tab_desc == NULL)
 790                 return NULL;
 791
 792         offs = cpu_to_le32(tab_desc->findex) +
 793                         (cpu_to_le32(tab_desc->entry_size) * idx);
 794
 795         return (struct uni_data_desc *)&unirom[offs];
 796 }
 797
 798 static u8 *
 799 nx_get_bootld_offs(struct netxen_adapter *adapter)
 800 {
 801         u32 offs = NETXEN_BOOTLD_START;
 802
 803         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 804                 offs = cpu_to_le32((nx_get_data_desc(adapter,
 805                                         NX_UNI_DIR_SECT_BOOTLD,
 806                                         NX_UNI_BOOTLD_IDX_OFF))->findex);
 807
 808         return (u8 *)&adapter->fw->data[offs];
 809 }
 810
 811 static u8 *
 812 nx_get_fw_offs(struct netxen_adapter *adapter)
 813 {
 814         u32 offs = NETXEN_IMAGE_START;
 815
 816         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 817                 offs = cpu_to_le32((nx_get_data_desc(adapter,
 818                                         NX_UNI_DIR_SECT_FW,
 819                                         NX_UNI_FIRMWARE_IDX_OFF))->findex);
 820
 821         return (u8 *)&adapter->fw->data[offs];
 822 }
 823
 824 static __le32
 825 nx_get_fw_size(struct netxen_adapter *adapter)
 826 {
 827         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 828                 return cpu_to_le32((nx_get_data_desc(adapter,
 829                                         NX_UNI_DIR_SECT_FW,
 830                                         NX_UNI_FIRMWARE_IDX_OFF))->size);
 831         else
 832                 return cpu_to_le32(
 833                                 *(u32 *)&adapter->fw->data[NX_FW_SIZE_OFFSET]);
 834 }
 835
 836 static __le32
 837 nx_get_fw_version(struct netxen_adapter *adapter)
 838 {
 839         struct uni_data_desc *fw_data_desc;
 840         const struct firmware *fw = adapter->fw;
 841         __le32 major, minor, sub;
 842         const u8 *ver_str;
 843         int i, ret = 0;
 844
 845         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 846
 847                 fw_data_desc = nx_get_data_desc(adapter,
 848                                 NX_UNI_DIR_SECT_FW, NX_UNI_FIRMWARE_IDX_OFF);
 849                 ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
 850                                 cpu_to_le32(fw_data_desc->size) - 17;
 851
 852                 for (i = 0; i < 12; i++) {
 853                         if (!strncmp(&ver_str[i], "REV=", 4)) {
 854                                 ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
 855                                                         &major, &minor, &sub);
 856                                 break;
 857                         }
 858                 }
 859
 860                 if (ret != 3)
 861                         return 0;
 862
 863                 return major + (minor << 8) + (sub << 16);
 864
 865         } else
 866                 return cpu_to_le32(*(u32 *)&fw->data[NX_FW_VERSION_OFFSET]);
 867 }
 868
 869 static __le32
 870 nx_get_bios_version(struct netxen_adapter *adapter)
 871 {
 872         const struct firmware *fw = adapter->fw;
 873         __le32 bios_ver, prd_off = adapter->file_prd_off;
 874
 875         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 876                 bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
 877                                                 + NX_UNI_BIOS_VERSION_OFF));
 878                 return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) +
 879                                                         (bios_ver >> 24);
 880         } else
 881                 return cpu_to_le32(*(u32 *)&fw->data[NX_BIOS_VERSION_OFFSET]);
 882
 883 }
 884
 885 int
 886 netxen_need_fw_reset(struct netxen_adapter *adapter)
 887 {
 888         u32 count, old_count;
 889         u32 val, version, major, minor, build;
 890         int i, timeout;
 891         u8 fw_type;
 892
 893         /* NX2031 firmware doesn't support heartbit */
 894         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 895                 return 1;
 896
 897         if (adapter->need_fw_reset)
 898                 return 1;
 899
 900         /* last attempt had failed */
 901         if (NXRD32(adapter, CRB_CMDPEG_STATE) == PHAN_INITIALIZE_FAILED)
 902                 return 1;
 903
 904         old_count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 905
 906         for (i = 0; i < 10; i++) {
 907
 908                 timeout = msleep_interruptible(200);
 909                 if (timeout) {
 910                         NXWR32(adapter, CRB_CMDPEG_STATE,
 911                                         PHAN_INITIALIZE_FAILED);
 912                         return -EINTR;
 913                 }
 914
 915                 count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 916                 if (count != old_count)
 917                         break;
 918         }
 919
 920         /* firmware is dead */
 921         if (count == old_count)
 922                 return 1;
 923
 924         /* check if we have got newer or different file firmware */
 925         if (adapter->fw) {
 926
 927                 val = nx_get_fw_version(adapter);
 928
 929                 version = NETXEN_DECODE_VERSION(val);
 930
 931                 major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
 932                 minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
 933                 build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
 934
 935                 if (version > NETXEN_VERSION_CODE(major, minor, build))
 936                         return 1;
 937
 938                 if (version == NETXEN_VERSION_CODE(major, minor, build) &&
 939                         adapter->fw_type != NX_UNIFIED_ROMIMAGE) {
 940
 941                         val = NXRD32(adapter, NETXEN_MIU_MN_CONTROL);
 942                         fw_type = (val & 0x4) ?
 943                                 NX_P3_CT_ROMIMAGE : NX_P3_MN_ROMIMAGE;
 944
 945                         if (adapter->fw_type != fw_type)
 946                                 return 1;
 947                 }
 948         }
 949
 950         return 0;
 951 }
 952
 953 #define NETXEN_MIN_P3_FW_SUPP   NETXEN_VERSION_CODE(4, 0, 505)
 954
 955 int
 956 netxen_check_flash_fw_compatibility(struct netxen_adapter *adapter)
 957 {
 958         u32 flash_fw_ver, min_fw_ver;
 959
 960         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 961                 return 0;
 962
 963         if (netxen_rom_fast_read(adapter,
 964                         NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
 965                 dev_err(&adapter->pdev->dev, "Unable to read flash fw"
 966                         "version\n");
 967                 return -EIO;
 968         }
 969
 970         flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
 971         min_fw_ver = NETXEN_MIN_P3_FW_SUPP;
 972         if (flash_fw_ver >= min_fw_ver)
 973                 return 0;
 974
 975         dev_info(&adapter->pdev->dev, "Flash fw[%d.%d.%d] is < min fw supported"
 976                 "[4.0.505]. Please update firmware on flash\n",
 977                 _major(flash_fw_ver), _minor(flash_fw_ver),
 978                 _build(flash_fw_ver));
 979         return -EINVAL;
 980 }
 981
 982 static char *fw_name[] = {
 983         NX_P2_MN_ROMIMAGE_NAME,
 984         NX_P3_CT_ROMIMAGE_NAME,
 985         NX_P3_MN_ROMIMAGE_NAME,
 986         NX_UNIFIED_ROMIMAGE_NAME,
 987         NX_FLASH_ROMIMAGE_NAME,
 988 };
 989
 990 int
 991 netxen_load_firmware(struct netxen_adapter *adapter)
 992 {
 993         u64 *ptr64;
 994         u32 i, flashaddr, size;
 995         const struct firmware *fw = adapter->fw;
 996         struct pci_dev *pdev = adapter->pdev;
 997
 998         dev_info(&pdev->dev, "loading firmware from %s\n",
 999                         fw_name[adapter->fw_type]);
1000
1001         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1002                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 1);
1003
1004         if (fw) {
1005                 __le64 data;
1006
1007                 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
1008
1009                 ptr64 = (u64 *)nx_get_bootld_offs(adapter);
1010                 flashaddr = NETXEN_BOOTLD_START;
1011
1012                 for (i = 0; i < size; i++) {
1013                         data = cpu_to_le64(ptr64[i]);
1014
1015                         if (adapter->pci_mem_write(adapter, flashaddr, data))
1016                                 return -EIO;
1017
1018                         flashaddr += 8;
1019                 }
1020
1021                 size = (__force u32)nx_get_fw_size(adapter) / 8;
1022
1023                 ptr64 = (u64 *)nx_get_fw_offs(adapter);
1024                 flashaddr = NETXEN_IMAGE_START;
1025
1026                 for (i = 0; i < size; i++) {
1027                         data = cpu_to_le64(ptr64[i]);
1028
1029                         if (adapter->pci_mem_write(adapter,
1030                                                 flashaddr, data))
1031                                 return -EIO;
1032
1033                         flashaddr += 8;
1034                 }
1035
1036                 size = (__force u32)nx_get_fw_size(adapter) % 8;
1037                 if (size) {
1038                         data = cpu_to_le64(ptr64[i]);
1039
1040                         if (adapter->pci_mem_write(adapter,
1041                                                 flashaddr, data))
1042                                 return -EIO;
1043                 }
1044
1045         } else {
1046                 u64 data;
1047                 u32 hi, lo;
1048
1049                 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
1050                 flashaddr = NETXEN_BOOTLD_START;
1051
1052                 for (i = 0; i < size; i++) {
1053                         if (netxen_rom_fast_read(adapter,
1054                                         flashaddr, (int *)&lo) != 0)
1055                                 return -EIO;
1056                         if (netxen_rom_fast_read(adapter,
1057                                         flashaddr + 4, (int *)&hi) != 0)
1058                                 return -EIO;
1059
1060                         /* hi, lo are already in host endian byteorder */
1061                         data = (((u64)hi << 32) | lo);
1062
1063                         if (adapter->pci_mem_write(adapter,
1064                                                 flashaddr, data))
1065                                 return -EIO;
1066
1067                         flashaddr += 8;
1068                 }
1069         }
1070         msleep(1);
1071
1072         if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
1073                 NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x18, 0x1020);
1074                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001e);
1075         } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1076                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001d);
1077         else {
1078                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CHIP_CLK_CTRL, 0x3fff);
1079                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 0);
1080         }
1081
1082         return 0;
1083 }
1084
1085 static int
1086 netxen_validate_firmware(struct netxen_adapter *adapter)
1087 {
1088         __le32 val;
1089         __le32 flash_fw_ver;
1090         u32 file_fw_ver, min_ver, bios;
1091         struct pci_dev *pdev = adapter->pdev;
1092         const struct firmware *fw = adapter->fw;
1093         u8 fw_type = adapter->fw_type;
1094         u32 crbinit_fix_fw;
1095
1096         if (fw_type == NX_UNIFIED_ROMIMAGE) {
1097                 if (netxen_nic_validate_unified_romimage(adapter))
1098                         return -EINVAL;
1099         } else {
1100                 val = cpu_to_le32(*(u32 *)&fw->data[NX_FW_MAGIC_OFFSET]);
1101                 if ((__force u32)val != NETXEN_BDINFO_MAGIC)
1102                         return -EINVAL;
1103
1104                 if (fw->size < NX_FW_MIN_SIZE)
1105                         return -EINVAL;
1106         }
1107
1108         val = nx_get_fw_version(adapter);
1109
1110         if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1111                 min_ver = NETXEN_MIN_P3_FW_SUPP;
1112         else
1113                 min_ver = NETXEN_VERSION_CODE(3, 4, 216);
1114
1115         file_fw_ver = NETXEN_DECODE_VERSION(val);
1116
1117         if ((_major(file_fw_ver) > _NETXEN_NIC_LINUX_MAJOR) ||
1118             (file_fw_ver < min_ver)) {
1119                 dev_err(&pdev->dev,
1120                                 "%s: firmware version %d.%d.%d unsupported\n",
1121                 fw_name[fw_type], _major(file_fw_ver), _minor(file_fw_ver),
1122                  _build(file_fw_ver));
1123                 return -EINVAL;
1124         }
1125         val = nx_get_bios_version(adapter);
1126         netxen_rom_fast_read(adapter, NX_BIOS_VERSION_OFFSET, (int *)&bios);
1127         if ((__force u32)val != bios) {
1128                 dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
1129                                 fw_name[fw_type]);
1130                 return -EINVAL;
1131         }
1132
1133         if (netxen_rom_fast_read(adapter,
1134                         NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
1135                 dev_err(&pdev->dev, "Unable to read flash fw version\n");
1136                 return -EIO;
1137         }
1138         flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
1139
1140         /* New fw from file is not allowed, if fw on flash is < 4.0.554 */
1141         crbinit_fix_fw = NETXEN_VERSION_CODE(4, 0, 554);
1142         if (file_fw_ver >= crbinit_fix_fw && flash_fw_ver < crbinit_fix_fw &&
1143             NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1144                 dev_err(&pdev->dev, "Incompatibility detected between driver "
1145                         "and firmware version on flash. This configuration "
1146                         "is not recommended. Please update the firmware on "
1147                         "flash immediately\n");
1148                 return -EINVAL;
1149         }
1150
1151         /* check if flashed firmware is newer only for no-mn and P2 case*/
1152         if (!netxen_p3_has_mn(adapter) ||
1153             NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1154                 if (flash_fw_ver > file_fw_ver) {
1155                         dev_info(&pdev->dev, "%s: firmware is older than flash\n",
1156                                 fw_name[fw_type]);
1157                         return -EINVAL;
1158                 }
1159         }
1160
1161         NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
1162         return 0;
1163 }
1164
1165 static void
1166 nx_get_next_fwtype(struct netxen_adapter *adapter)
1167 {
1168         u8 fw_type;
1169
1170         switch (adapter->fw_type) {
1171         case NX_UNKNOWN_ROMIMAGE:
1172                 fw_type = NX_UNIFIED_ROMIMAGE;
1173                 break;
1174
1175         case NX_UNIFIED_ROMIMAGE:
1176                 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id))
1177                         fw_type = NX_FLASH_ROMIMAGE;
1178                 else if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1179                         fw_type = NX_P2_MN_ROMIMAGE;
1180                 else if (netxen_p3_has_mn(adapter))
1181                         fw_type = NX_P3_MN_ROMIMAGE;
1182                 else
1183                         fw_type = NX_P3_CT_ROMIMAGE;
1184                 break;
1185
1186         case NX_P3_MN_ROMIMAGE:
1187                 fw_type = NX_P3_CT_ROMIMAGE;
1188                 break;
1189
1190         case NX_P2_MN_ROMIMAGE:
1191         case NX_P3_CT_ROMIMAGE:
1192         default:
1193                 fw_type = NX_FLASH_ROMIMAGE;
1194                 break;
1195         }
1196
1197         adapter->fw_type = fw_type;
1198 }
1199
1200 static int
1201 netxen_p3_has_mn(struct netxen_adapter *adapter)
1202 {
1203         u32 capability, flashed_ver;
1204         capability = 0;
1205
1206         /* NX2031 always had MN */
1207         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1208                 return 1;
1209
1210         netxen_rom_fast_read(adapter,
1211                         NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
1212         flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
1213
1214         if (flashed_ver >= NETXEN_VERSION_CODE(4, 0, 220)) {
1215
1216                 capability = NXRD32(adapter, NX_PEG_TUNE_CAPABILITY);
1217                 if (capability & NX_PEG_TUNE_MN_PRESENT)
1218                         return 1;
1219         }
1220         return 0;
1221 }
1222
1223 void netxen_request_firmware(struct netxen_adapter *adapter)
1224 {
1225         struct pci_dev *pdev = adapter->pdev;
1226         int rc = 0;
1227
1228         adapter->fw_type = NX_UNKNOWN_ROMIMAGE;
1229
1230 next:
1231         nx_get_next_fwtype(adapter);
1232
1233         if (adapter->fw_type == NX_FLASH_ROMIMAGE) {
1234                 adapter->fw = NULL;
1235         } else {
1236                 rc = request_firmware(&adapter->fw,
1237                                 fw_name[adapter->fw_type], &pdev->dev);
1238                 if (rc != 0)
1239                         goto next;
1240
1241                 rc = netxen_validate_firmware(adapter);
1242                 if (rc != 0) {
1243                         release_firmware(adapter->fw);
1244                         msleep(1);
1245                         goto next;
1246                 }
1247         }
1248 }
1249
1250
1251 void
1252 netxen_release_firmware(struct netxen_adapter *adapter)
1253 {
1254         release_firmware(adapter->fw);
1255         adapter->fw = NULL;
1256 }
1257
1258 int netxen_init_dummy_dma(struct netxen_adapter *adapter)
1259 {
1260         u64 addr;
1261         u32 hi, lo;
1262
1263         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1264                 return 0;
1265
1266         adapter->dummy_dma.addr = pci_alloc_consistent(adapter->pdev,
1267                                  NETXEN_HOST_DUMMY_DMA_SIZE,
1268                                  &adapter->dummy_dma.phys_addr);
1269         if (adapter->dummy_dma.addr == NULL) {
1270                 dev_err(&adapter->pdev->dev,
1271                         "ERROR: Could not allocate dummy DMA memory\n");
1272                 return -ENOMEM;
1273         }
1274
1275         addr = (uint64_t) adapter->dummy_dma.phys_addr;
1276         hi = (addr >> 32) & 0xffffffff;
1277         lo = addr & 0xffffffff;
1278
1279         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
1280         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
1281
1282         return 0;
1283 }
1284
1285 /*
1286  * NetXen DMA watchdog control:
1287  *
1288  *      Bit 0           : enabled => R/O: 1 watchdog active, 0 inactive
1289  *      Bit 1           : disable_request => 1 req disable dma watchdog
1290  *      Bit 2           : enable_request =>  1 req enable dma watchdog
1291  *      Bit 3-31        : unused
1292  */
1293 void netxen_free_dummy_dma(struct netxen_adapter *adapter)
1294 {
1295         int i = 100;
1296         u32 ctrl;
1297
1298         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1299                 return;
1300
1301         if (!adapter->dummy_dma.addr)
1302                 return;
1303
1304         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1305         if ((ctrl & 0x1) != 0) {
1306                 NXWR32(adapter, NETXEN_DMA_WATCHDOG_CTRL, (ctrl | 0x2));
1307
1308                 while ((ctrl & 0x1) != 0) {
1309
1310                         msleep(50);
1311
1312                         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1313
1314                         if (--i == 0)
1315                                 break;
1316                 }
1317         }
1318
1319         if (i) {
1320                 pci_free_consistent(adapter->pdev,
1321                             NETXEN_HOST_DUMMY_DMA_SIZE,
1322                             adapter->dummy_dma.addr,
1323                             adapter->dummy_dma.phys_addr);
1324                 adapter->dummy_dma.addr = NULL;
1325         } else
1326                 dev_err(&adapter->pdev->dev, "dma_watchdog_shutdown failed\n");
1327 }
1328
1329 int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
1330 {
1331         u32 val = 0;
1332         int retries = 60;
1333
1334         if (pegtune_val)
1335                 return 0;
1336
1337         do {
1338                 val = NXRD32(adapter, CRB_CMDPEG_STATE);
1339                 switch (val) {
1340                 case PHAN_INITIALIZE_COMPLETE:
1341                 case PHAN_INITIALIZE_ACK:
1342                         return 0;
1343                 case PHAN_INITIALIZE_FAILED:
1344                         goto out_err;
1345                 default:
1346                         break;
1347                 }
1348
1349                 msleep(500);
1350
1351         } while (--retries);
1352
1353         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
1354
1355 out_err:
1356         dev_warn(&adapter->pdev->dev, "firmware init failed\n");
1357         return -EIO;
1358 }
1359
1360 static int
1361 netxen_receive_peg_ready(struct netxen_adapter *adapter)
1362 {
1363         u32 val = 0;
1364         int retries = 2000;
1365
1366         do {
1367                 val = NXRD32(adapter, CRB_RCVPEG_STATE);
1368
1369                 if (val == PHAN_PEG_RCV_INITIALIZED)
1370                         return 0;
1371
1372                 msleep(10);
1373
1374         } while (--retries);
1375
1376         if (!retries) {
1377                 printk(KERN_ERR "Receive Peg initialization not "
1378                               "complete, state: 0x%x.\n", val);
1379                 return -EIO;
1380         }
1381
1382         return 0;
1383 }
1384
1385 int netxen_init_firmware(struct netxen_adapter *adapter)
1386 {
1387         int err;
1388
1389         err = netxen_receive_peg_ready(adapter);
1390         if (err)
1391                 return err;
1392
1393         NXWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
1394         NXWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
1395         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
1396
1397         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1398                 NXWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
1399
1400         return err;
1401 }
1402
1403 static void
1404 netxen_handle_linkevent(struct netxen_adapter *adapter, nx_fw_msg_t *msg)
1405 {
1406         u32 cable_OUI;
1407         u16 cable_len;
1408         u16 link_speed;
1409         u8  link_status, module, duplex, autoneg;
1410         struct net_device *netdev = adapter->netdev;
1411
1412         adapter->has_link_events = 1;
1413
1414         cable_OUI = msg->body[1] & 0xffffffff;
1415         cable_len = (msg->body[1] >> 32) & 0xffff;
1416         link_speed = (msg->body[1] >> 48) & 0xffff;
1417
1418         link_status = msg->body[2] & 0xff;
1419         duplex = (msg->body[2] >> 16) & 0xff;
1420         autoneg = (msg->body[2] >> 24) & 0xff;
1421
1422         module = (msg->body[2] >> 8) & 0xff;
1423         if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) {
1424                 printk(KERN_INFO "%s: unsupported cable: OUI 0x%x, length %d\n",
1425                                 netdev->name, cable_OUI, cable_len);
1426         } else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) {
1427                 printk(KERN_INFO "%s: unsupported cable length %d\n",
1428                                 netdev->name, cable_len);
1429         }
1430
1431         /* update link parameters */
1432         if (duplex == LINKEVENT_FULL_DUPLEX)
1433                 adapter->link_duplex = DUPLEX_FULL;
1434         else
1435                 adapter->link_duplex = DUPLEX_HALF;
1436         adapter->module_type = module;
1437         adapter->link_autoneg = autoneg;
1438         adapter->link_speed = link_speed;
1439
1440         netxen_advert_link_change(adapter, link_status);
1441 }
1442
1443 static void
1444 netxen_handle_fw_message(int desc_cnt, int index,
1445                 struct nx_host_sds_ring *sds_ring)
1446 {
1447         nx_fw_msg_t msg;
1448         struct status_desc *desc;
1449         int i = 0, opcode;
1450
1451         while (desc_cnt > 0 && i < 8) {
1452                 desc = &sds_ring->desc_head[index];
1453                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1454                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1455
1456                 index = get_next_index(index, sds_ring->num_desc);
1457                 desc_cnt--;
1458         }
1459
1460         opcode = netxen_get_nic_msg_opcode(msg.body[0]);
1461         switch (opcode) {
1462         case NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1463                 netxen_handle_linkevent(sds_ring->adapter, &msg);
1464                 break;
1465         default:
1466                 break;
1467         }
1468 }
1469
1470 static int
1471 netxen_alloc_rx_skb(struct netxen_adapter *adapter,
1472                 struct nx_host_rds_ring *rds_ring,
1473                 struct netxen_rx_buffer *buffer)
1474 {
1475         struct sk_buff *skb;
1476         dma_addr_t dma;
1477         struct pci_dev *pdev = adapter->pdev;
1478
1479         buffer->skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size);
1480         if (!buffer->skb)
1481                 return 1;
1482
1483         skb = buffer->skb;
1484
1485         if (!adapter->ahw.cut_through)
1486                 skb_reserve(skb, 2);
1487
1488         dma = pci_map_single(pdev, skb->data,
1489                         rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1490
1491         if (pci_dma_mapping_error(pdev, dma)) {
1492                 dev_kfree_skb_any(skb);
1493                 buffer->skb = NULL;
1494                 return 1;
1495         }
1496
1497         buffer->skb = skb;
1498         buffer->dma = dma;
1499         buffer->state = NETXEN_BUFFER_BUSY;
1500
1501         return 0;
1502 }
1503
1504 static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
1505                 struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
1506 {
1507         struct netxen_rx_buffer *buffer;
1508         struct sk_buff *skb;
1509
1510         buffer = &rds_ring->rx_buf_arr[index];
1511
1512         pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
1513                         PCI_DMA_FROMDEVICE);
1514
1515         skb = buffer->skb;
1516         if (!skb)
1517                 goto no_skb;
1518
1519         if (likely((adapter->netdev->features & NETIF_F_RXCSUM)
1520             && cksum == STATUS_CKSUM_OK)) {
1521                 adapter->stats.csummed++;
1522                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1523         } else
1524                 skb->ip_summed = CHECKSUM_NONE;
1525
1526         buffer->skb = NULL;
1527 no_skb:
1528         buffer->state = NETXEN_BUFFER_FREE;
1529         return skb;
1530 }
1531
1532 static struct netxen_rx_buffer *
1533 netxen_process_rcv(struct netxen_adapter *adapter,
1534                 struct nx_host_sds_ring *sds_ring,
1535                 int ring, u64 sts_data0)
1536 {
1537         struct net_device *netdev = adapter->netdev;
1538         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1539         struct netxen_rx_buffer *buffer;
1540         struct sk_buff *skb;
1541         struct nx_host_rds_ring *rds_ring;
1542         int index, length, cksum, pkt_offset;
1543
1544         if (unlikely(ring >= adapter->max_rds_rings))
1545                 return NULL;
1546
1547         rds_ring = &recv_ctx->rds_rings[ring];
1548
1549         index = netxen_get_sts_refhandle(sts_data0);
1550         if (unlikely(index >= rds_ring->num_desc))
1551                 return NULL;
1552
1553         buffer = &rds_ring->rx_buf_arr[index];
1554
1555         length = netxen_get_sts_totallength(sts_data0);
1556         cksum  = netxen_get_sts_status(sts_data0);
1557         pkt_offset = netxen_get_sts_pkt_offset(sts_data0);
1558
1559         skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
1560         if (!skb)
1561                 return buffer;
1562
1563         if (length > rds_ring->skb_size)
1564                 skb_put(skb, rds_ring->skb_size);
1565         else
1566                 skb_put(skb, length);
1567
1568
1569         if (pkt_offset)
1570                 skb_pull(skb, pkt_offset);
1571
1572         skb->protocol = eth_type_trans(skb, netdev);
1573
1574         napi_gro_receive(&sds_ring->napi, skb);
1575
1576         adapter->stats.rx_pkts++;
1577         adapter->stats.rxbytes += length;
1578
1579         return buffer;
1580 }
1581
1582 #define TCP_HDR_SIZE            20
1583 #define TCP_TS_OPTION_SIZE      12
1584 #define TCP_TS_HDR_SIZE         (TCP_HDR_SIZE + TCP_TS_OPTION_SIZE)
1585
1586 static struct netxen_rx_buffer *
1587 netxen_process_lro(struct netxen_adapter *adapter,
1588                 struct nx_host_sds_ring *sds_ring,
1589                 int ring, u64 sts_data0, u64 sts_data1)
1590 {
1591         struct net_device *netdev = adapter->netdev;
1592         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1593         struct netxen_rx_buffer *buffer;
1594         struct sk_buff *skb;
1595         struct nx_host_rds_ring *rds_ring;
1596         struct iphdr *iph;
1597         struct tcphdr *th;
1598         bool push, timestamp;
1599         int l2_hdr_offset, l4_hdr_offset;
1600         int index;
1601         u16 lro_length, length, data_offset;
1602         u32 seq_number;
1603         u8 vhdr_len = 0;
1604
1605         if (unlikely(ring > adapter->max_rds_rings))
1606                 return NULL;
1607
1608         rds_ring = &recv_ctx->rds_rings[ring];
1609
1610         index = netxen_get_lro_sts_refhandle(sts_data0);
1611         if (unlikely(index > rds_ring->num_desc))
1612                 return NULL;
1613
1614         buffer = &rds_ring->rx_buf_arr[index];
1615
1616         timestamp = netxen_get_lro_sts_timestamp(sts_data0);
1617         lro_length = netxen_get_lro_sts_length(sts_data0);
1618         l2_hdr_offset = netxen_get_lro_sts_l2_hdr_offset(sts_data0);
1619         l4_hdr_offset = netxen_get_lro_sts_l4_hdr_offset(sts_data0);
1620         push = netxen_get_lro_sts_push_flag(sts_data0);
1621         seq_number = netxen_get_lro_sts_seq_number(sts_data1);
1622
1623         skb = netxen_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1624         if (!skb)
1625                 return buffer;
1626
1627         if (timestamp)
1628                 data_offset = l4_hdr_offset + TCP_TS_HDR_SIZE;
1629         else
1630                 data_offset = l4_hdr_offset + TCP_HDR_SIZE;
1631
1632         skb_put(skb, lro_length + data_offset);
1633
1634         skb_pull(skb, l2_hdr_offset);
1635         skb->protocol = eth_type_trans(skb, netdev);
1636
1637         if (skb->protocol == htons(ETH_P_8021Q))
1638                 vhdr_len = VLAN_HLEN;
1639         iph = (struct iphdr *)(skb->data + vhdr_len);
1640         th = (struct tcphdr *)((skb->data + vhdr_len) + (iph->ihl << 2));
1641
1642         length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1643         csum_replace2(&iph->check, iph->tot_len, htons(length));
1644         iph->tot_len = htons(length);
1645         th->psh = push;
1646         th->seq = htonl(seq_number);
1647
1648         length = skb->len;
1649
1650         if (adapter->flags & NETXEN_FW_MSS_CAP)
1651                 skb_shinfo(skb)->gso_size  =  netxen_get_lro_sts_mss(sts_data1);
1652
1653         netif_receive_skb(skb);
1654
1655         adapter->stats.lro_pkts++;
1656         adapter->stats.rxbytes += length;
1657
1658         return buffer;
1659 }
1660
1661 #define netxen_merge_rx_buffers(list, head) \
1662         do { list_splice_tail_init(list, head); } while (0);
1663
1664 int
1665 netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
1666 {
1667         struct netxen_adapter *adapter = sds_ring->adapter;
1668
1669         struct list_head *cur;
1670
1671         struct status_desc *desc;
1672         struct netxen_rx_buffer *rxbuf;
1673
1674         u32 consumer = sds_ring->consumer;
1675
1676         int count = 0;
1677         u64 sts_data0, sts_data1;
1678         int opcode, ring = 0, desc_cnt;
1679
1680         while (count < max) {
1681                 desc = &sds_ring->desc_head[consumer];
1682                 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1683
1684                 if (!(sts_data0 & STATUS_OWNER_HOST))
1685                         break;
1686
1687                 desc_cnt = netxen_get_sts_desc_cnt(sts_data0);
1688
1689                 opcode = netxen_get_sts_opcode(sts_data0);
1690
1691                 switch (opcode) {
1692                 case NETXEN_NIC_RXPKT_DESC:
1693                 case NETXEN_OLD_RXPKT_DESC:
1694                 case NETXEN_NIC_SYN_OFFLOAD:
1695                         ring = netxen_get_sts_type(sts_data0);
1696                         rxbuf = netxen_process_rcv(adapter, sds_ring,
1697                                         ring, sts_data0);
1698                         break;
1699                 case NETXEN_NIC_LRO_DESC:
1700                         ring = netxen_get_lro_sts_type(sts_data0);
1701                         sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1702                         rxbuf = netxen_process_lro(adapter, sds_ring,
1703                                         ring, sts_data0, sts_data1);
1704                         break;
1705                 case NETXEN_NIC_RESPONSE_DESC:
1706                         netxen_handle_fw_message(desc_cnt, consumer, sds_ring);
1707                 default:
1708                         goto skip;
1709                 }
1710
1711                 WARN_ON(desc_cnt > 1);
1712
1713                 if (rxbuf)
1714                         list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1715
1716 skip:
1717                 for (; desc_cnt > 0; desc_cnt--) {
1718                         desc = &sds_ring->desc_head[consumer];
1719                         desc->status_desc_data[0] =
1720                                 cpu_to_le64(STATUS_OWNER_PHANTOM);
1721                         consumer = get_next_index(consumer, sds_ring->num_desc);
1722                 }
1723                 count++;
1724         }
1725
1726         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1727                 struct nx_host_rds_ring *rds_ring =
1728                         &adapter->recv_ctx.rds_rings[ring];
1729
1730                 if (!list_empty(&sds_ring->free_list[ring])) {
1731                         list_for_each(cur, &sds_ring->free_list[ring]) {
1732                                 rxbuf = list_entry(cur,
1733                                                 struct netxen_rx_buffer, list);
1734                                 netxen_alloc_rx_skb(adapter, rds_ring, rxbuf);
1735                         }
1736                         spin_lock(&rds_ring->lock);
1737                         netxen_merge_rx_buffers(&sds_ring->free_list[ring],
1738                                                 &rds_ring->free_list);
1739                         spin_unlock(&rds_ring->lock);
1740                 }
1741
1742                 netxen_post_rx_buffers_nodb(adapter, rds_ring);
1743         }
1744
1745         if (count) {
1746                 sds_ring->consumer = consumer;
1747                 NXWRIO(adapter, sds_ring->crb_sts_consumer, consumer);
1748         }
1749
1750         return count;
1751 }
1752
1753 /* Process Command status ring */
1754 int netxen_process_cmd_ring(struct netxen_adapter *adapter)
1755 {
1756         u32 sw_consumer, hw_consumer;
1757         int count = 0, i;
1758         struct netxen_cmd_buffer *buffer;
1759         struct pci_dev *pdev = adapter->pdev;
1760         struct net_device *netdev = adapter->netdev;
1761         struct netxen_skb_frag *frag;
1762         int done = 0;
1763         struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1764
1765         if (!spin_trylock(&adapter->tx_clean_lock))
1766                 return 1;
1767
1768         sw_consumer = tx_ring->sw_consumer;
1769         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1770
1771         while (sw_consumer != hw_consumer) {
1772                 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1773                 if (buffer->skb) {
1774                         frag = &buffer->frag_array[0];
1775                         pci_unmap_single(pdev, frag->dma, frag->length,
1776                                          PCI_DMA_TODEVICE);
1777                         frag->dma = 0ULL;
1778                         for (i = 1; i < buffer->frag_count; i++) {
1779                                 frag++; /* Get the next frag */
1780                                 pci_unmap_page(pdev, frag->dma, frag->length,
1781                                                PCI_DMA_TODEVICE);
1782                                 frag->dma = 0ULL;
1783                         }
1784
1785                         adapter->stats.xmitfinished++;
1786                         dev_kfree_skb_any(buffer->skb);
1787                         buffer->skb = NULL;
1788                 }
1789
1790                 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1791                 if (++count >= MAX_STATUS_HANDLE)
1792                         break;
1793         }
1794
1795         if (count && netif_running(netdev)) {
1796                 tx_ring->sw_consumer = sw_consumer;
1797
1798                 smp_mb();
1799
1800                 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev))
1801                         if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
1802                                 netif_wake_queue(netdev);
1803                 adapter->tx_timeo_cnt = 0;
1804         }
1805         /*
1806          * If everything is freed up to consumer then check if the ring is full
1807          * If the ring is full then check if more needs to be freed and
1808          * schedule the call back again.
1809          *
1810          * This happens when there are 2 CPUs. One could be freeing and the
1811          * other filling it. If the ring is full when we get out of here and
1812          * the card has already interrupted the host then the host can miss the
1813          * interrupt.
1814          *
1815          * There is still a possible race condition and the host could miss an
1816          * interrupt. The card has to take care of this.
1817          */
1818         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1819         done = (sw_consumer == hw_consumer);
1820         spin_unlock(&adapter->tx_clean_lock);
1821
1822         return done;
1823 }
1824
1825 void
1826 netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
1827         struct nx_host_rds_ring *rds_ring)
1828 {
1829         struct rcv_desc *pdesc;
1830         struct netxen_rx_buffer *buffer;
1831         int producer, count = 0;
1832         netxen_ctx_msg msg = 0;
1833         struct list_head *head;
1834
1835         producer = rds_ring->producer;
1836
1837         head = &rds_ring->free_list;
1838         while (!list_empty(head)) {
1839
1840                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1841
1842                 if (!buffer->skb) {
1843                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1844                                 break;
1845                 }
1846
1847                 count++;
1848                 list_del(&buffer->list);
1849
1850                 /* make a rcv descriptor  */
1851                 pdesc = &rds_ring->desc_head[producer];
1852                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1853                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1854                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1855
1856                 producer = get_next_index(producer, rds_ring->num_desc);
1857         }
1858
1859         if (count) {
1860                 rds_ring->producer = producer;
1861                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1862                                 (producer-1) & (rds_ring->num_desc-1));
1863
1864                 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1865                         /*
1866                          * Write a doorbell msg to tell phanmon of change in
1867                          * receive ring producer
1868                          * Only for firmware version < 4.0.0
1869                          */
1870                         netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
1871                         netxen_set_msg_privid(msg);
1872                         netxen_set_msg_count(msg,
1873                                              ((producer - 1) &
1874                                               (rds_ring->num_desc - 1)));
1875                         netxen_set_msg_ctxid(msg, adapter->portnum);
1876                         netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
1877                         NXWRIO(adapter, DB_NORMALIZE(adapter,
1878                                         NETXEN_RCV_PRODUCER_OFFSET), msg);
1879                 }
1880         }
1881 }
1882
1883 static void
1884 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
1885                 struct nx_host_rds_ring *rds_ring)
1886 {
1887         struct rcv_desc *pdesc;
1888         struct netxen_rx_buffer *buffer;
1889         int producer, count = 0;
1890         struct list_head *head;
1891
1892         if (!spin_trylock(&rds_ring->lock))
1893                 return;
1894
1895         producer = rds_ring->producer;
1896
1897         head = &rds_ring->free_list;
1898         while (!list_empty(head)) {
1899
1900                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1901
1902                 if (!buffer->skb) {
1903                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1904                                 break;
1905                 }
1906
1907                 count++;
1908                 list_del(&buffer->list);
1909
1910                 /* make a rcv descriptor  */
1911                 pdesc = &rds_ring->desc_head[producer];
1912                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1913                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1914                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1915
1916                 producer = get_next_index(producer, rds_ring->num_desc);
1917         }
1918
1919         if (count) {
1920                 rds_ring->producer = producer;
1921                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1922                                 (producer - 1) & (rds_ring->num_desc - 1));
1923         }
1924         spin_unlock(&rds_ring->lock);
1925 }
1926
1927 void netxen_nic_clear_stats(struct netxen_adapter *adapter)
1928 {
1929         memset(&adapter->stats, 0, sizeof(adapter->stats));
1930 }
1931