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, 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 <linux/if_vlan.h>
  30 #include "netxen_nic.h"
  31 #include "netxen_nic_hw.h"
  32
  33 struct crb_addr_pair {
  34         u32 addr;
  35         u32 data;
  36 };
  37
  38 #define NETXEN_MAX_CRB_XFORM 60
  39 static unsigned int crb_addr_xform[NETXEN_MAX_CRB_XFORM];
  40 #define NETXEN_ADDR_ERROR (0xffffffff)
  41
  42 #define crb_addr_transform(name) \
  43         crb_addr_xform[NETXEN_HW_PX_MAP_CRB_##name] = \
  44         NETXEN_HW_CRB_HUB_AGT_ADR_##name << 20
  45
  46 #define NETXEN_NIC_XDMA_RESET 0x8000ff
  47
  48 static void
  49 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
  50                 struct nx_host_rds_ring *rds_ring);
  51 static int netxen_p3_has_mn(struct netxen_adapter *adapter);
  52
  53 static void crb_addr_transform_setup(void)
  54 {
  55         crb_addr_transform(XDMA);
  56         crb_addr_transform(TIMR);
  57         crb_addr_transform(SRE);
  58         crb_addr_transform(SQN3);
  59         crb_addr_transform(SQN2);
  60         crb_addr_transform(SQN1);
  61         crb_addr_transform(SQN0);
  62         crb_addr_transform(SQS3);
  63         crb_addr_transform(SQS2);
  64         crb_addr_transform(SQS1);
  65         crb_addr_transform(SQS0);
  66         crb_addr_transform(RPMX7);
  67         crb_addr_transform(RPMX6);
  68         crb_addr_transform(RPMX5);
  69         crb_addr_transform(RPMX4);
  70         crb_addr_transform(RPMX3);
  71         crb_addr_transform(RPMX2);
  72         crb_addr_transform(RPMX1);
  73         crb_addr_transform(RPMX0);
  74         crb_addr_transform(ROMUSB);
  75         crb_addr_transform(SN);
  76         crb_addr_transform(QMN);
  77         crb_addr_transform(QMS);
  78         crb_addr_transform(PGNI);
  79         crb_addr_transform(PGND);
  80         crb_addr_transform(PGN3);
  81         crb_addr_transform(PGN2);
  82         crb_addr_transform(PGN1);
  83         crb_addr_transform(PGN0);
  84         crb_addr_transform(PGSI);
  85         crb_addr_transform(PGSD);
  86         crb_addr_transform(PGS3);
  87         crb_addr_transform(PGS2);
  88         crb_addr_transform(PGS1);
  89         crb_addr_transform(PGS0);
  90         crb_addr_transform(PS);
  91         crb_addr_transform(PH);
  92         crb_addr_transform(NIU);
  93         crb_addr_transform(I2Q);
  94         crb_addr_transform(EG);
  95         crb_addr_transform(MN);
  96         crb_addr_transform(MS);
  97         crb_addr_transform(CAS2);
  98         crb_addr_transform(CAS1);
  99         crb_addr_transform(CAS0);
 100         crb_addr_transform(CAM);
 101         crb_addr_transform(C2C1);
 102         crb_addr_transform(C2C0);
 103         crb_addr_transform(SMB);
 104         crb_addr_transform(OCM0);
 105         crb_addr_transform(I2C0);
 106 }
 107
 108 void netxen_release_rx_buffers(struct netxen_adapter *adapter)
 109 {
 110         struct netxen_recv_context *recv_ctx;
 111         struct nx_host_rds_ring *rds_ring;
 112         struct netxen_rx_buffer *rx_buf;
 113         int i, ring;
 114
 115         recv_ctx = &adapter->recv_ctx;
 116         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 117                 rds_ring = &recv_ctx->rds_rings[ring];
 118                 for (i = 0; i < rds_ring->num_desc; ++i) {
 119                         rx_buf = &(rds_ring->rx_buf_arr[i]);
 120                         if (rx_buf->state == NETXEN_BUFFER_FREE)
 121                                 continue;
 122                         pci_unmap_single(adapter->pdev,
 123                                         rx_buf->dma,
 124                                         rds_ring->dma_size,
 125                                         PCI_DMA_FROMDEVICE);
 126                         if (rx_buf->skb != NULL)
 127                                 dev_kfree_skb_any(rx_buf->skb);
 128                 }
 129         }
 130 }
 131
 132 void netxen_release_tx_buffers(struct netxen_adapter *adapter)
 133 {
 134         struct netxen_cmd_buffer *cmd_buf;
 135         struct netxen_skb_frag *buffrag;
 136         int i, j;
 137         struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
 138
 139         cmd_buf = tx_ring->cmd_buf_arr;
 140         for (i = 0; i < tx_ring->num_desc; i++) {
 141                 buffrag = cmd_buf->frag_array;
 142                 if (buffrag->dma) {
 143                         pci_unmap_single(adapter->pdev, buffrag->dma,
 144                                          buffrag->length, PCI_DMA_TODEVICE);
 145                         buffrag->dma = 0ULL;
 146                 }
 147                 for (j = 1; j < cmd_buf->frag_count; j++) {
 148                         buffrag++;
 149                         if (buffrag->dma) {
 150                                 pci_unmap_page(adapter->pdev, buffrag->dma,
 151                                                buffrag->length,
 152                                                PCI_DMA_TODEVICE);
 153                                 buffrag->dma = 0ULL;
 154                         }
 155                 }
 156                 if (cmd_buf->skb) {
 157                         dev_kfree_skb_any(cmd_buf->skb);
 158                         cmd_buf->skb = NULL;
 159                 }
 160                 cmd_buf++;
 161         }
 162 }
 163
 164 void netxen_free_sw_resources(struct netxen_adapter *adapter)
 165 {
 166         struct netxen_recv_context *recv_ctx;
 167         struct nx_host_rds_ring *rds_ring;
 168         struct nx_host_tx_ring *tx_ring;
 169         int ring;
 170
 171         recv_ctx = &adapter->recv_ctx;
 172
 173         if (recv_ctx->rds_rings == NULL)
 174                 goto skip_rds;
 175
 176         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 177                 rds_ring = &recv_ctx->rds_rings[ring];
 178                 vfree(rds_ring->rx_buf_arr);
 179                 rds_ring->rx_buf_arr = NULL;
 180         }
 181         kfree(recv_ctx->rds_rings);
 182
 183 skip_rds:
 184         if (adapter->tx_ring == NULL)
 185                 return;
 186
 187         tx_ring = adapter->tx_ring;
 188         vfree(tx_ring->cmd_buf_arr);
 189         kfree(tx_ring);
 190         adapter->tx_ring = NULL;
 191 }
 192
 193 int netxen_alloc_sw_resources(struct netxen_adapter *adapter)
 194 {
 195         struct netxen_recv_context *recv_ctx;
 196         struct nx_host_rds_ring *rds_ring;
 197         struct nx_host_sds_ring *sds_ring;
 198         struct nx_host_tx_ring *tx_ring;
 199         struct netxen_rx_buffer *rx_buf;
 200         int ring, i;
 201
 202         struct netxen_cmd_buffer *cmd_buf_arr;
 203         struct net_device *netdev = adapter->netdev;
 204
 205         tx_ring = kzalloc(sizeof(struct nx_host_tx_ring), GFP_KERNEL);
 206         if (tx_ring == NULL)
 207                 return -ENOMEM;
 208
 209         adapter->tx_ring = tx_ring;
 210
 211         tx_ring->num_desc = adapter->num_txd;
 212         tx_ring->txq = netdev_get_tx_queue(netdev, 0);
 213
 214         cmd_buf_arr = vzalloc(TX_BUFF_RINGSIZE(tx_ring));
 215         if (cmd_buf_arr == NULL)
 216                 goto err_out;
 217
 218         tx_ring->cmd_buf_arr = cmd_buf_arr;
 219
 220         recv_ctx = &adapter->recv_ctx;
 221
 222         rds_ring = kcalloc(adapter->max_rds_rings,
 223                            sizeof(struct nx_host_rds_ring), GFP_KERNEL);
 224         if (rds_ring == NULL)
 225                 goto err_out;
 226
 227         recv_ctx->rds_rings = rds_ring;
 228
 229         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 230                 rds_ring = &recv_ctx->rds_rings[ring];
 231                 switch (ring) {
 232                 case RCV_RING_NORMAL:
 233                         rds_ring->num_desc = adapter->num_rxd;
 234                         if (adapter->ahw.cut_through) {
 235                                 rds_ring->dma_size =
 236                                         NX_CT_DEFAULT_RX_BUF_LEN;
 237                                 rds_ring->skb_size =
 238                                         NX_CT_DEFAULT_RX_BUF_LEN;
 239                         } else {
 240                                 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 241                                         rds_ring->dma_size =
 242                                                 NX_P3_RX_BUF_MAX_LEN;
 243                                 else
 244                                         rds_ring->dma_size =
 245                                                 NX_P2_RX_BUF_MAX_LEN;
 246                                 rds_ring->skb_size =
 247                                         rds_ring->dma_size + NET_IP_ALIGN;
 248                         }
 249                         break;
 250
 251                 case RCV_RING_JUMBO:
 252                         rds_ring->num_desc = adapter->num_jumbo_rxd;
 253                         if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 254                                 rds_ring->dma_size =
 255                                         NX_P3_RX_JUMBO_BUF_MAX_LEN;
 256                         else
 257                                 rds_ring->dma_size =
 258                                         NX_P2_RX_JUMBO_BUF_MAX_LEN;
 259
 260                         if (adapter->capabilities & NX_CAP0_HW_LRO)
 261                                 rds_ring->dma_size += NX_LRO_BUFFER_EXTRA;
 262
 263                         rds_ring->skb_size =
 264                                 rds_ring->dma_size + NET_IP_ALIGN;
 265                         break;
 266
 267                 case RCV_RING_LRO:
 268                         rds_ring->num_desc = adapter->num_lro_rxd;
 269                         rds_ring->dma_size = NX_RX_LRO_BUFFER_LENGTH;
 270                         rds_ring->skb_size = rds_ring->dma_size + NET_IP_ALIGN;
 271                         break;
 272
 273                 }
 274                 rds_ring->rx_buf_arr = vzalloc(RCV_BUFF_RINGSIZE(rds_ring));
 275                 if (rds_ring->rx_buf_arr == NULL)
 276                         /* free whatever was already allocated */
 277                         goto err_out;
 278
 279                 INIT_LIST_HEAD(&rds_ring->free_list);
 280                 /*
 281                  * Now go through all of them, set reference handles
 282                  * and put them in the queues.
 283                  */
 284                 rx_buf = rds_ring->rx_buf_arr;
 285                 for (i = 0; i < rds_ring->num_desc; i++) {
 286                         list_add_tail(&rx_buf->list,
 287                                         &rds_ring->free_list);
 288                         rx_buf->ref_handle = i;
 289                         rx_buf->state = NETXEN_BUFFER_FREE;
 290                         rx_buf++;
 291                 }
 292                 spin_lock_init(&rds_ring->lock);
 293         }
 294
 295         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 296                 sds_ring = &recv_ctx->sds_rings[ring];
 297                 sds_ring->irq = adapter->msix_entries[ring].vector;
 298                 sds_ring->adapter = adapter;
 299                 sds_ring->num_desc = adapter->num_rxd;
 300
 301                 for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
 302                         INIT_LIST_HEAD(&sds_ring->free_list[i]);
 303         }
 304
 305         return 0;
 306
 307 err_out:
 308         netxen_free_sw_resources(adapter);
 309         return -ENOMEM;
 310 }
 311
 312 /*
 313  * netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
 314  * address to external PCI CRB address.
 315  */
 316 static u32 netxen_decode_crb_addr(u32 addr)
 317 {
 318         int i;
 319         u32 base_addr, offset, pci_base;
 320
 321         crb_addr_transform_setup();
 322
 323         pci_base = NETXEN_ADDR_ERROR;
 324         base_addr = addr & 0xfff00000;
 325         offset = addr & 0x000fffff;
 326
 327         for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
 328                 if (crb_addr_xform[i] == base_addr) {
 329                         pci_base = i << 20;
 330                         break;
 331                 }
 332         }
 333         if (pci_base == NETXEN_ADDR_ERROR)
 334                 return pci_base;
 335         else
 336                 return pci_base + offset;
 337 }
 338
 339 #define NETXEN_MAX_ROM_WAIT_USEC        100
 340
 341 static int netxen_wait_rom_done(struct netxen_adapter *adapter)
 342 {
 343         long timeout = 0;
 344         long done = 0;
 345
 346         cond_resched();
 347
 348         while (done == 0) {
 349                 done = NXRD32(adapter, NETXEN_ROMUSB_GLB_STATUS);
 350                 done &= 2;
 351                 if (++timeout >= NETXEN_MAX_ROM_WAIT_USEC) {
 352                         dev_err(&adapter->pdev->dev,
 353                                 "Timeout reached  waiting for rom done");
 354                         return -EIO;
 355                 }
 356                 udelay(1);
 357         }
 358         return 0;
 359 }
 360
 361 static int do_rom_fast_read(struct netxen_adapter *adapter,
 362                             int addr, int *valp)
 363 {
 364         NXWR32(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
 365         NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 366         NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
 367         NXWR32(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
 368         if (netxen_wait_rom_done(adapter)) {
 369                 printk("Error waiting for rom done\n");
 370                 return -EIO;
 371         }
 372         /* reset abyte_cnt and dummy_byte_cnt */
 373         NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
 374         udelay(10);
 375         NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 376
 377         *valp = NXRD32(adapter, NETXEN_ROMUSB_ROM_RDATA);
 378         return 0;
 379 }
 380
 381 static int do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 382                                   u8 *bytes, size_t size)
 383 {
 384         int addridx;
 385         int ret = 0;
 386
 387         for (addridx = addr; addridx < (addr + size); addridx += 4) {
 388                 int v;
 389                 ret = do_rom_fast_read(adapter, addridx, &v);
 390                 if (ret != 0)
 391                         break;
 392                 *(__le32 *)bytes = cpu_to_le32(v);
 393                 bytes += 4;
 394         }
 395
 396         return ret;
 397 }
 398
 399 int
 400 netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 401                                 u8 *bytes, size_t size)
 402 {
 403         int ret;
 404
 405         ret = netxen_rom_lock(adapter);
 406         if (ret < 0)
 407                 return ret;
 408
 409         ret = do_rom_fast_read_words(adapter, addr, bytes, size);
 410
 411         netxen_rom_unlock(adapter);
 412         return ret;
 413 }
 414
 415 int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
 416 {
 417         int ret;
 418
 419         if (netxen_rom_lock(adapter) != 0)
 420                 return -EIO;
 421
 422         ret = do_rom_fast_read(adapter, addr, valp);
 423         netxen_rom_unlock(adapter);
 424         return ret;
 425 }
 426
 427 #define NETXEN_BOARDTYPE                0x4008
 428 #define NETXEN_BOARDNUM                 0x400c
 429 #define NETXEN_CHIPNUM                  0x4010
 430
 431 int netxen_pinit_from_rom(struct netxen_adapter *adapter)
 432 {
 433         int addr, val;
 434         int i, n, init_delay = 0;
 435         struct crb_addr_pair *buf;
 436         unsigned offset;
 437         u32 off;
 438
 439         /* resetall */
 440         netxen_rom_lock(adapter);
 441         NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0xfeffffff);
 442         netxen_rom_unlock(adapter);
 443
 444         if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 445                 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 446                         (n != 0xcafecafe) ||
 447                         netxen_rom_fast_read(adapter, 4, &n) != 0) {
 448                         printk(KERN_ERR "%s: ERROR Reading crb_init area: "
 449                                         "n: %08x\n", netxen_nic_driver_name, n);
 450                         return -EIO;
 451                 }
 452                 offset = n & 0xffffU;
 453                 n = (n >> 16) & 0xffffU;
 454         } else {
 455                 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 456                         !(n & 0x80000000)) {
 457                         printk(KERN_ERR "%s: ERROR Reading crb_init area: "
 458                                         "n: %08x\n", netxen_nic_driver_name, n);
 459                         return -EIO;
 460                 }
 461                 offset = 1;
 462                 n &= ~0x80000000;
 463         }
 464
 465         if (n >= 1024) {
 466                 printk(KERN_ERR "%s:n=0x%x Error! NetXen card flash not"
 467                        " initialized.\n", __func__, n);
 468                 return -EIO;
 469         }
 470
 471         buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
 472         if (buf == NULL)
 473                 return -ENOMEM;
 474
 475         for (i = 0; i < n; i++) {
 476                 if (netxen_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
 477                 netxen_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
 478                         kfree(buf);
 479                         return -EIO;
 480                 }
 481
 482                 buf[i].addr = addr;
 483                 buf[i].data = val;
 484
 485         }
 486
 487         for (i = 0; i < n; i++) {
 488
 489                 off = netxen_decode_crb_addr(buf[i].addr);
 490                 if (off == NETXEN_ADDR_ERROR) {
 491                         printk(KERN_ERR"CRB init value out of range %x\n",
 492                                         buf[i].addr);
 493                         continue;
 494                 }
 495                 off += NETXEN_PCI_CRBSPACE;
 496
 497                 if (off & 1)
 498                         continue;
 499
 500                 /* skipping cold reboot MAGIC */
 501                 if (off == NETXEN_CAM_RAM(0x1fc))
 502                         continue;
 503
 504                 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 505                         if (off == (NETXEN_CRB_I2C0 + 0x1c))
 506                                 continue;
 507                         /* do not reset PCI */
 508                         if (off == (ROMUSB_GLB + 0xbc))
 509                                 continue;
 510                         if (off == (ROMUSB_GLB + 0xa8))
 511                                 continue;
 512                         if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
 513                                 continue;
 514                         if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
 515                                 continue;
 516                         if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
 517                                 continue;
 518                         if ((off & 0x0ff00000) == NETXEN_CRB_DDR_NET)
 519                                 continue;
 520                         if (off == (NETXEN_CRB_PEG_NET_1 + 0x18) &&
 521                                 !NX_IS_REVISION_P3P(adapter->ahw.revision_id))
 522                                 buf[i].data = 0x1020;
 523                         /* skip the function enable register */
 524                         if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION))
 525                                 continue;
 526                         if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION2))
 527                                 continue;
 528                         if ((off & 0x0ff00000) == NETXEN_CRB_SMB)
 529                                 continue;
 530                 }
 531
 532                 init_delay = 1;
 533                 /* After writing this register, HW needs time for CRB */
 534                 /* to quiet down (else crb_window returns 0xffffffff) */
 535                 if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
 536                         init_delay = 1000;
 537                         if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 538                                 /* hold xdma in reset also */
 539                                 buf[i].data = NETXEN_NIC_XDMA_RESET;
 540                                 buf[i].data = 0x8000ff;
 541                         }
 542                 }
 543
 544                 NXWR32(adapter, off, buf[i].data);
 545
 546                 msleep(init_delay);
 547         }
 548         kfree(buf);
 549
 550         /* disable_peg_cache_all */
 551
 552         /* unreset_net_cache */
 553         if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 554                 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
 555                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, (val & 0xffffff0f));
 556         }
 557
 558         /* p2dn replyCount */
 559         NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
 560         /* disable_peg_cache 0 */
 561         NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0x4c, 8);
 562         /* disable_peg_cache 1 */
 563         NXWR32(adapter, NETXEN_CRB_PEG_NET_I + 0x4c, 8);
 564
 565         /* peg_clr_all */
 566
 567         /* peg_clr 0 */
 568         NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x8, 0);
 569         NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0xc, 0);
 570         /* peg_clr 1 */
 571         NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0x8, 0);
 572         NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0xc, 0);
 573         /* peg_clr 2 */
 574         NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0x8, 0);
 575         NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0xc, 0);
 576         /* peg_clr 3 */
 577         NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0x8, 0);
 578         NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0xc, 0);
 579         return 0;
 580 }
 581
 582 static struct uni_table_desc *nx_get_table_desc(const u8 *unirom, int section)
 583 {
 584         uint32_t i;
 585         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 586         __le32 entries = cpu_to_le32(directory->num_entries);
 587
 588         for (i = 0; i < entries; i++) {
 589
 590                 __le32 offs = cpu_to_le32(directory->findex) +
 591                                 (i * cpu_to_le32(directory->entry_size));
 592                 __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
 593
 594                 if (tab_type == section)
 595                         return (struct uni_table_desc *) &unirom[offs];
 596         }
 597
 598         return NULL;
 599 }
 600
 601 #define QLCNIC_FILEHEADER_SIZE  (14 * 4)
 602
 603 static int
 604 netxen_nic_validate_header(struct netxen_adapter *adapter)
 605  {
 606         const u8 *unirom = adapter->fw->data;
 607         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 608         u32 fw_file_size = adapter->fw->size;
 609         u32 tab_size;
 610         __le32 entries;
 611         __le32 entry_size;
 612
 613         if (fw_file_size < QLCNIC_FILEHEADER_SIZE)
 614                 return -EINVAL;
 615
 616         entries = cpu_to_le32(directory->num_entries);
 617         entry_size = cpu_to_le32(directory->entry_size);
 618         tab_size = cpu_to_le32(directory->findex) + (entries * entry_size);
 619
 620         if (fw_file_size < tab_size)
 621                 return -EINVAL;
 622
 623         return 0;
 624 }
 625
 626 static int
 627 netxen_nic_validate_bootld(struct netxen_adapter *adapter)
 628 {
 629         struct uni_table_desc *tab_desc;
 630         struct uni_data_desc *descr;
 631         const u8 *unirom = adapter->fw->data;
 632         __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 633                                 NX_UNI_BOOTLD_IDX_OFF));
 634         u32 offs;
 635         u32 tab_size;
 636         u32 data_size;
 637
 638         tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_BOOTLD);
 639
 640         if (!tab_desc)
 641                 return -EINVAL;
 642
 643         tab_size = cpu_to_le32(tab_desc->findex) +
 644                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 645
 646         if (adapter->fw->size < tab_size)
 647                 return -EINVAL;
 648
 649         offs = cpu_to_le32(tab_desc->findex) +
 650                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 651         descr = (struct uni_data_desc *)&unirom[offs];
 652
 653         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 654
 655         if (adapter->fw->size < data_size)
 656                 return -EINVAL;
 657
 658         return 0;
 659 }
 660
 661 static int
 662 netxen_nic_validate_fw(struct netxen_adapter *adapter)
 663 {
 664         struct uni_table_desc *tab_desc;
 665         struct uni_data_desc *descr;
 666         const u8 *unirom = adapter->fw->data;
 667         __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 668                                 NX_UNI_FIRMWARE_IDX_OFF));
 669         u32 offs;
 670         u32 tab_size;
 671         u32 data_size;
 672
 673         tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_FW);
 674
 675         if (!tab_desc)
 676                 return -EINVAL;
 677
 678         tab_size = cpu_to_le32(tab_desc->findex) +
 679                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 680
 681         if (adapter->fw->size < tab_size)
 682                 return -EINVAL;
 683
 684         offs = cpu_to_le32(tab_desc->findex) +
 685                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 686         descr = (struct uni_data_desc *)&unirom[offs];
 687         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 688
 689         if (adapter->fw->size < data_size)
 690                 return -EINVAL;
 691
 692         return 0;
 693 }
 694
 695
 696 static int
 697 netxen_nic_validate_product_offs(struct netxen_adapter *adapter)
 698 {
 699         struct uni_table_desc *ptab_descr;
 700         const u8 *unirom = adapter->fw->data;
 701         int mn_present = (NX_IS_REVISION_P2(adapter->ahw.revision_id)) ?
 702                         1 : netxen_p3_has_mn(adapter);
 703         __le32 entries;
 704         __le32 entry_size;
 705         u32 tab_size;
 706         u32 i;
 707
 708         ptab_descr = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_PRODUCT_TBL);
 709         if (ptab_descr == NULL)
 710                 return -EINVAL;
 711
 712         entries = cpu_to_le32(ptab_descr->num_entries);
 713         entry_size = cpu_to_le32(ptab_descr->entry_size);
 714         tab_size = cpu_to_le32(ptab_descr->findex) + (entries * entry_size);
 715
 716         if (adapter->fw->size < tab_size)
 717                 return -EINVAL;
 718
 719 nomn:
 720         for (i = 0; i < entries; i++) {
 721
 722                 __le32 flags, file_chiprev, offs;
 723                 u8 chiprev = adapter->ahw.revision_id;
 724                 uint32_t flagbit;
 725
 726                 offs = cpu_to_le32(ptab_descr->findex) +
 727                                 (i * cpu_to_le32(ptab_descr->entry_size));
 728                 flags = cpu_to_le32(*((int *)&unirom[offs] + NX_UNI_FLAGS_OFF));
 729                 file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
 730                                                         NX_UNI_CHIP_REV_OFF));
 731
 732                 flagbit = mn_present ? 1 : 2;
 733
 734                 if ((chiprev == file_chiprev) &&
 735                                         ((1ULL << flagbit) & flags)) {
 736                         adapter->file_prd_off = offs;
 737                         return 0;
 738                 }
 739         }
 740
 741         if (mn_present && NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 742                 mn_present = 0;
 743                 goto nomn;
 744         }
 745
 746         return -EINVAL;
 747 }
 748
 749 static int
 750 netxen_nic_validate_unified_romimage(struct netxen_adapter *adapter)
 751 {
 752         if (netxen_nic_validate_header(adapter)) {
 753                 dev_err(&adapter->pdev->dev,
 754                                 "unified image: header validation failed\n");
 755                 return -EINVAL;
 756         }
 757
 758         if (netxen_nic_validate_product_offs(adapter)) {
 759                 dev_err(&adapter->pdev->dev,
 760                                 "unified image: product validation failed\n");
 761                 return -EINVAL;
 762         }
 763
 764         if (netxen_nic_validate_bootld(adapter)) {
 765                 dev_err(&adapter->pdev->dev,
 766                                 "unified image: bootld validation failed\n");
 767                 return -EINVAL;
 768         }
 769
 770         if (netxen_nic_validate_fw(adapter)) {
 771                 dev_err(&adapter->pdev->dev,
 772                                 "unified image: firmware validation failed\n");
 773                 return -EINVAL;
 774         }
 775
 776         return 0;
 777 }
 778
 779 static struct uni_data_desc *nx_get_data_desc(struct netxen_adapter *adapter,
 780                         u32 section, u32 idx_offset)
 781 {
 782         const u8 *unirom = adapter->fw->data;
 783         int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 784                                                                 idx_offset));
 785         struct uni_table_desc *tab_desc;
 786         __le32 offs;
 787
 788         tab_desc = nx_get_table_desc(unirom, section);
 789
 790         if (tab_desc == NULL)
 791                 return NULL;
 792
 793         offs = cpu_to_le32(tab_desc->findex) +
 794                         (cpu_to_le32(tab_desc->entry_size) * idx);
 795
 796         return (struct uni_data_desc *)&unirom[offs];
 797 }
 798
 799 static u8 *
 800 nx_get_bootld_offs(struct netxen_adapter *adapter)
 801 {
 802         u32 offs = NETXEN_BOOTLD_START;
 803
 804         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 805                 offs = cpu_to_le32((nx_get_data_desc(adapter,
 806                                         NX_UNI_DIR_SECT_BOOTLD,
 807                                         NX_UNI_BOOTLD_IDX_OFF))->findex);
 808
 809         return (u8 *)&adapter->fw->data[offs];
 810 }
 811
 812 static u8 *
 813 nx_get_fw_offs(struct netxen_adapter *adapter)
 814 {
 815         u32 offs = NETXEN_IMAGE_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_FW,
 820                                         NX_UNI_FIRMWARE_IDX_OFF))->findex);
 821
 822         return (u8 *)&adapter->fw->data[offs];
 823 }
 824
 825 static __le32
 826 nx_get_fw_size(struct netxen_adapter *adapter)
 827 {
 828         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 829                 return cpu_to_le32((nx_get_data_desc(adapter,
 830                                         NX_UNI_DIR_SECT_FW,
 831                                         NX_UNI_FIRMWARE_IDX_OFF))->size);
 832         else
 833                 return cpu_to_le32(
 834                                 *(u32 *)&adapter->fw->data[NX_FW_SIZE_OFFSET]);
 835 }
 836
 837 static __le32
 838 nx_get_fw_version(struct netxen_adapter *adapter)
 839 {
 840         struct uni_data_desc *fw_data_desc;
 841         const struct firmware *fw = adapter->fw;
 842         __le32 major, minor, sub;
 843         const u8 *ver_str;
 844         int i, ret = 0;
 845
 846         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 847
 848                 fw_data_desc = nx_get_data_desc(adapter,
 849                                 NX_UNI_DIR_SECT_FW, NX_UNI_FIRMWARE_IDX_OFF);
 850                 ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
 851                                 cpu_to_le32(fw_data_desc->size) - 17;
 852
 853                 for (i = 0; i < 12; i++) {
 854                         if (!strncmp(&ver_str[i], "REV=", 4)) {
 855                                 ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
 856                                                         &major, &minor, &sub);
 857                                 break;
 858                         }
 859                 }
 860
 861                 if (ret != 3)
 862                         return 0;
 863
 864                 return major + (minor << 8) + (sub << 16);
 865
 866         } else
 867                 return cpu_to_le32(*(u32 *)&fw->data[NX_FW_VERSION_OFFSET]);
 868 }
 869
 870 static __le32
 871 nx_get_bios_version(struct netxen_adapter *adapter)
 872 {
 873         const struct firmware *fw = adapter->fw;
 874         __le32 bios_ver, prd_off = adapter->file_prd_off;
 875
 876         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 877                 bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
 878                                                 + NX_UNI_BIOS_VERSION_OFF));
 879                 return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) +
 880                                                         (bios_ver >> 24);
 881         } else
 882                 return cpu_to_le32(*(u32 *)&fw->data[NX_BIOS_VERSION_OFFSET]);
 883
 884 }
 885
 886 int
 887 netxen_need_fw_reset(struct netxen_adapter *adapter)
 888 {
 889         u32 count, old_count;
 890         u32 val, version, major, minor, build;
 891         int i, timeout;
 892         u8 fw_type;
 893
 894         /* NX2031 firmware doesn't support heartbit */
 895         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 896                 return 1;
 897
 898         if (adapter->need_fw_reset)
 899                 return 1;
 900
 901         /* last attempt had failed */
 902         if (NXRD32(adapter, CRB_CMDPEG_STATE) == PHAN_INITIALIZE_FAILED)
 903                 return 1;
 904
 905         old_count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 906
 907         for (i = 0; i < 10; i++) {
 908
 909                 timeout = msleep_interruptible(200);
 910                 if (timeout) {
 911                         NXWR32(adapter, CRB_CMDPEG_STATE,
 912                                         PHAN_INITIALIZE_FAILED);
 913                         return -EINTR;
 914                 }
 915
 916                 count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 917                 if (count != old_count)
 918                         break;
 919         }
 920
 921         /* firmware is dead */
 922         if (count == old_count)
 923                 return 1;
 924
 925         /* check if we have got newer or different file firmware */
 926         if (adapter->fw) {
 927
 928                 val = nx_get_fw_version(adapter);
 929
 930                 version = NETXEN_DECODE_VERSION(val);
 931
 932                 major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
 933                 minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
 934                 build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
 935
 936                 if (version > NETXEN_VERSION_CODE(major, minor, build))
 937                         return 1;
 938
 939                 if (version == NETXEN_VERSION_CODE(major, minor, build) &&
 940                         adapter->fw_type != NX_UNIFIED_ROMIMAGE) {
 941
 942                         val = NXRD32(adapter, NETXEN_MIU_MN_CONTROL);
 943                         fw_type = (val & 0x4) ?
 944                                 NX_P3_CT_ROMIMAGE : NX_P3_MN_ROMIMAGE;
 945
 946                         if (adapter->fw_type != fw_type)
 947                                 return 1;
 948                 }
 949         }
 950
 951         return 0;
 952 }
 953
 954 #define NETXEN_MIN_P3_FW_SUPP   NETXEN_VERSION_CODE(4, 0, 505)
 955
 956 int
 957 netxen_check_flash_fw_compatibility(struct netxen_adapter *adapter)
 958 {
 959         u32 flash_fw_ver, min_fw_ver;
 960
 961         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 962                 return 0;
 963
 964         if (netxen_rom_fast_read(adapter,
 965                         NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
 966                 dev_err(&adapter->pdev->dev, "Unable to read flash fw"
 967                         "version\n");
 968                 return -EIO;
 969         }
 970
 971         flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
 972         min_fw_ver = NETXEN_MIN_P3_FW_SUPP;
 973         if (flash_fw_ver >= min_fw_ver)
 974                 return 0;
 975
 976         dev_info(&adapter->pdev->dev, "Flash fw[%d.%d.%d] is < min fw supported"
 977                 "[4.0.505]. Please update firmware on flash\n",
 978                 _major(flash_fw_ver), _minor(flash_fw_ver),
 979                 _build(flash_fw_ver));
 980         return -EINVAL;
 981 }
 982
 983 static char *fw_name[] = {
 984         NX_P2_MN_ROMIMAGE_NAME,
 985         NX_P3_CT_ROMIMAGE_NAME,
 986         NX_P3_MN_ROMIMAGE_NAME,
 987         NX_UNIFIED_ROMIMAGE_NAME,
 988         NX_FLASH_ROMIMAGE_NAME,
 989 };
 990
 991 int
 992 netxen_load_firmware(struct netxen_adapter *adapter)
 993 {
 994         u64 *ptr64;
 995         u32 i, flashaddr, size;
 996         const struct firmware *fw = adapter->fw;
 997         struct pci_dev *pdev = adapter->pdev;
 998
 999         dev_info(&pdev->dev, "loading firmware from %s\n",
1000                         fw_name[adapter->fw_type]);
1001
1002         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1003                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 1);
1004
1005         if (fw) {
1006                 __le64 data;
1007
1008                 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
1009
1010                 ptr64 = (u64 *)nx_get_bootld_offs(adapter);
1011                 flashaddr = NETXEN_BOOTLD_START;
1012
1013                 for (i = 0; i < size; i++) {
1014                         data = cpu_to_le64(ptr64[i]);
1015
1016                         if (adapter->pci_mem_write(adapter, flashaddr, data))
1017                                 return -EIO;
1018
1019                         flashaddr += 8;
1020                 }
1021
1022                 size = (__force u32)nx_get_fw_size(adapter) / 8;
1023
1024                 ptr64 = (u64 *)nx_get_fw_offs(adapter);
1025                 flashaddr = NETXEN_IMAGE_START;
1026
1027                 for (i = 0; i < size; i++) {
1028                         data = cpu_to_le64(ptr64[i]);
1029
1030                         if (adapter->pci_mem_write(adapter,
1031                                                 flashaddr, data))
1032                                 return -EIO;
1033
1034                         flashaddr += 8;
1035                 }
1036
1037                 size = (__force u32)nx_get_fw_size(adapter) % 8;
1038                 if (size) {
1039                         data = cpu_to_le64(ptr64[i]);
1040
1041                         if (adapter->pci_mem_write(adapter,
1042                                                 flashaddr, data))
1043                                 return -EIO;
1044                 }
1045
1046         } else {
1047                 u64 data;
1048                 u32 hi, lo;
1049
1050                 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
1051                 flashaddr = NETXEN_BOOTLD_START;
1052
1053                 for (i = 0; i < size; i++) {
1054                         if (netxen_rom_fast_read(adapter,
1055                                         flashaddr, (int *)&lo) != 0)
1056                                 return -EIO;
1057                         if (netxen_rom_fast_read(adapter,
1058                                         flashaddr + 4, (int *)&hi) != 0)
1059                                 return -EIO;
1060
1061                         /* hi, lo are already in host endian byteorder */
1062                         data = (((u64)hi << 32) | lo);
1063
1064                         if (adapter->pci_mem_write(adapter,
1065                                                 flashaddr, data))
1066                                 return -EIO;
1067
1068                         flashaddr += 8;
1069                 }
1070         }
1071         msleep(1);
1072
1073         if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
1074                 NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x18, 0x1020);
1075                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001e);
1076         } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1077                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001d);
1078         else {
1079                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CHIP_CLK_CTRL, 0x3fff);
1080                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 0);
1081         }
1082
1083         return 0;
1084 }
1085
1086 static int
1087 netxen_validate_firmware(struct netxen_adapter *adapter)
1088 {
1089         __le32 val;
1090         __le32 flash_fw_ver;
1091         u32 file_fw_ver, min_ver, bios;
1092         struct pci_dev *pdev = adapter->pdev;
1093         const struct firmware *fw = adapter->fw;
1094         u8 fw_type = adapter->fw_type;
1095         u32 crbinit_fix_fw;
1096
1097         if (fw_type == NX_UNIFIED_ROMIMAGE) {
1098                 if (netxen_nic_validate_unified_romimage(adapter))
1099                         return -EINVAL;
1100         } else {
1101                 val = cpu_to_le32(*(u32 *)&fw->data[NX_FW_MAGIC_OFFSET]);
1102                 if ((__force u32)val != NETXEN_BDINFO_MAGIC)
1103                         return -EINVAL;
1104
1105                 if (fw->size < NX_FW_MIN_SIZE)
1106                         return -EINVAL;
1107         }
1108
1109         val = nx_get_fw_version(adapter);
1110
1111         if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1112                 min_ver = NETXEN_MIN_P3_FW_SUPP;
1113         else
1114                 min_ver = NETXEN_VERSION_CODE(3, 4, 216);
1115
1116         file_fw_ver = NETXEN_DECODE_VERSION(val);
1117
1118         if ((_major(file_fw_ver) > _NETXEN_NIC_LINUX_MAJOR) ||
1119             (file_fw_ver < min_ver)) {
1120                 dev_err(&pdev->dev,
1121                                 "%s: firmware version %d.%d.%d unsupported\n",
1122                 fw_name[fw_type], _major(file_fw_ver), _minor(file_fw_ver),
1123                  _build(file_fw_ver));
1124                 return -EINVAL;
1125         }
1126         val = nx_get_bios_version(adapter);
1127         netxen_rom_fast_read(adapter, NX_BIOS_VERSION_OFFSET, (int *)&bios);
1128         if ((__force u32)val != bios) {
1129                 dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
1130                                 fw_name[fw_type]);
1131                 return -EINVAL;
1132         }
1133
1134         if (netxen_rom_fast_read(adapter,
1135                         NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
1136                 dev_err(&pdev->dev, "Unable to read flash fw version\n");
1137                 return -EIO;
1138         }
1139         flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
1140
1141         /* New fw from file is not allowed, if fw on flash is < 4.0.554 */
1142         crbinit_fix_fw = NETXEN_VERSION_CODE(4, 0, 554);
1143         if (file_fw_ver >= crbinit_fix_fw && flash_fw_ver < crbinit_fix_fw &&
1144             NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1145                 dev_err(&pdev->dev, "Incompatibility detected between driver "
1146                         "and firmware version on flash. This configuration "
1147                         "is not recommended. Please update the firmware on "
1148                         "flash immediately\n");
1149                 return -EINVAL;
1150         }
1151
1152         /* check if flashed firmware is newer only for no-mn and P2 case*/
1153         if (!netxen_p3_has_mn(adapter) ||
1154             NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1155                 if (flash_fw_ver > file_fw_ver) {
1156                         dev_info(&pdev->dev, "%s: firmware is older than flash\n",
1157                                 fw_name[fw_type]);
1158                         return -EINVAL;
1159                 }
1160         }
1161
1162         NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
1163         return 0;
1164 }
1165
1166 static void
1167 nx_get_next_fwtype(struct netxen_adapter *adapter)
1168 {
1169         u8 fw_type;
1170
1171         switch (adapter->fw_type) {
1172         case NX_UNKNOWN_ROMIMAGE:
1173                 fw_type = NX_UNIFIED_ROMIMAGE;
1174                 break;
1175
1176         case NX_UNIFIED_ROMIMAGE:
1177                 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id))
1178                         fw_type = NX_FLASH_ROMIMAGE;
1179                 else if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1180                         fw_type = NX_P2_MN_ROMIMAGE;
1181                 else if (netxen_p3_has_mn(adapter))
1182                         fw_type = NX_P3_MN_ROMIMAGE;
1183                 else
1184                         fw_type = NX_P3_CT_ROMIMAGE;
1185                 break;
1186
1187         case NX_P3_MN_ROMIMAGE:
1188                 fw_type = NX_P3_CT_ROMIMAGE;
1189                 break;
1190
1191         case NX_P2_MN_ROMIMAGE:
1192         case NX_P3_CT_ROMIMAGE:
1193         default:
1194                 fw_type = NX_FLASH_ROMIMAGE;
1195                 break;
1196         }
1197
1198         adapter->fw_type = fw_type;
1199 }
1200
1201 static int
1202 netxen_p3_has_mn(struct netxen_adapter *adapter)
1203 {
1204         u32 capability, flashed_ver;
1205         capability = 0;
1206
1207         /* NX2031 always had MN */
1208         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1209                 return 1;
1210
1211         netxen_rom_fast_read(adapter,
1212                         NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
1213         flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
1214
1215         if (flashed_ver >= NETXEN_VERSION_CODE(4, 0, 220)) {
1216
1217                 capability = NXRD32(adapter, NX_PEG_TUNE_CAPABILITY);
1218                 if (capability & NX_PEG_TUNE_MN_PRESENT)
1219                         return 1;
1220         }
1221         return 0;
1222 }
1223
1224 void netxen_request_firmware(struct netxen_adapter *adapter)
1225 {
1226         struct pci_dev *pdev = adapter->pdev;
1227         int rc = 0;
1228
1229         adapter->fw_type = NX_UNKNOWN_ROMIMAGE;
1230
1231 next:
1232         nx_get_next_fwtype(adapter);
1233
1234         if (adapter->fw_type == NX_FLASH_ROMIMAGE) {
1235                 adapter->fw = NULL;
1236         } else {
1237                 rc = request_firmware(&adapter->fw,
1238                                 fw_name[adapter->fw_type], &pdev->dev);
1239                 if (rc != 0)
1240                         goto next;
1241
1242                 rc = netxen_validate_firmware(adapter);
1243                 if (rc != 0) {
1244                         release_firmware(adapter->fw);
1245                         msleep(1);
1246                         goto next;
1247                 }
1248         }
1249 }
1250
1251
1252 void
1253 netxen_release_firmware(struct netxen_adapter *adapter)
1254 {
1255         release_firmware(adapter->fw);
1256         adapter->fw = NULL;
1257 }
1258
1259 int netxen_init_dummy_dma(struct netxen_adapter *adapter)
1260 {
1261         u64 addr;
1262         u32 hi, lo;
1263
1264         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1265                 return 0;
1266
1267         adapter->dummy_dma.addr = pci_alloc_consistent(adapter->pdev,
1268                                  NETXEN_HOST_DUMMY_DMA_SIZE,
1269                                  &adapter->dummy_dma.phys_addr);
1270         if (adapter->dummy_dma.addr == NULL) {
1271                 dev_err(&adapter->pdev->dev,
1272                         "ERROR: Could not allocate dummy DMA memory\n");
1273                 return -ENOMEM;
1274         }
1275
1276         addr = (uint64_t) adapter->dummy_dma.phys_addr;
1277         hi = (addr >> 32) & 0xffffffff;
1278         lo = addr & 0xffffffff;
1279
1280         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
1281         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
1282
1283         return 0;
1284 }
1285
1286 /*
1287  * NetXen DMA watchdog control:
1288  *
1289  *      Bit 0           : enabled => R/O: 1 watchdog active, 0 inactive
1290  *      Bit 1           : disable_request => 1 req disable dma watchdog
1291  *      Bit 2           : enable_request =>  1 req enable dma watchdog
1292  *      Bit 3-31        : unused
1293  */
1294 void netxen_free_dummy_dma(struct netxen_adapter *adapter)
1295 {
1296         int i = 100;
1297         u32 ctrl;
1298
1299         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1300                 return;
1301
1302         if (!adapter->dummy_dma.addr)
1303                 return;
1304
1305         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1306         if ((ctrl & 0x1) != 0) {
1307                 NXWR32(adapter, NETXEN_DMA_WATCHDOG_CTRL, (ctrl | 0x2));
1308
1309                 while ((ctrl & 0x1) != 0) {
1310
1311                         msleep(50);
1312
1313                         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1314
1315                         if (--i == 0)
1316                                 break;
1317                 }
1318         }
1319
1320         if (i) {
1321                 pci_free_consistent(adapter->pdev,
1322                             NETXEN_HOST_DUMMY_DMA_SIZE,
1323                             adapter->dummy_dma.addr,
1324                             adapter->dummy_dma.phys_addr);
1325                 adapter->dummy_dma.addr = NULL;
1326         } else
1327                 dev_err(&adapter->pdev->dev, "dma_watchdog_shutdown failed\n");
1328 }
1329
1330 int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
1331 {
1332         u32 val = 0;
1333         int retries = 60;
1334
1335         if (pegtune_val)
1336                 return 0;
1337
1338         do {
1339                 val = NXRD32(adapter, CRB_CMDPEG_STATE);
1340                 switch (val) {
1341                 case PHAN_INITIALIZE_COMPLETE:
1342                 case PHAN_INITIALIZE_ACK:
1343                         return 0;
1344                 case PHAN_INITIALIZE_FAILED:
1345                         goto out_err;
1346                 default:
1347                         break;
1348                 }
1349
1350                 msleep(500);
1351
1352         } while (--retries);
1353
1354         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
1355
1356 out_err:
1357         dev_warn(&adapter->pdev->dev, "firmware init failed\n");
1358         return -EIO;
1359 }
1360
1361 static int
1362 netxen_receive_peg_ready(struct netxen_adapter *adapter)
1363 {
1364         u32 val = 0;
1365         int retries = 2000;
1366
1367         do {
1368                 val = NXRD32(adapter, CRB_RCVPEG_STATE);
1369
1370                 if (val == PHAN_PEG_RCV_INITIALIZED)
1371                         return 0;
1372
1373                 msleep(10);
1374
1375         } while (--retries);
1376
1377         if (!retries) {
1378                 printk(KERN_ERR "Receive Peg initialization not "
1379                               "complete, state: 0x%x.\n", val);
1380                 return -EIO;
1381         }
1382
1383         return 0;
1384 }
1385
1386 int netxen_init_firmware(struct netxen_adapter *adapter)
1387 {
1388         int err;
1389
1390         err = netxen_receive_peg_ready(adapter);
1391         if (err)
1392                 return err;
1393
1394         NXWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
1395         NXWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
1396         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
1397
1398         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1399                 NXWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
1400
1401         return err;
1402 }
1403
1404 static void
1405 netxen_handle_linkevent(struct netxen_adapter *adapter, nx_fw_msg_t *msg)
1406 {
1407         u32 cable_OUI;
1408         u16 cable_len;
1409         u16 link_speed;
1410         u8  link_status, module, duplex, autoneg;
1411         struct net_device *netdev = adapter->netdev;
1412
1413         adapter->has_link_events = 1;
1414
1415         cable_OUI = msg->body[1] & 0xffffffff;
1416         cable_len = (msg->body[1] >> 32) & 0xffff;
1417         link_speed = (msg->body[1] >> 48) & 0xffff;
1418
1419         link_status = msg->body[2] & 0xff;
1420         duplex = (msg->body[2] >> 16) & 0xff;
1421         autoneg = (msg->body[2] >> 24) & 0xff;
1422
1423         module = (msg->body[2] >> 8) & 0xff;
1424         if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) {
1425                 printk(KERN_INFO "%s: unsupported cable: OUI 0x%x, length %d\n",
1426                                 netdev->name, cable_OUI, cable_len);
1427         } else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) {
1428                 printk(KERN_INFO "%s: unsupported cable length %d\n",
1429                                 netdev->name, cable_len);
1430         }
1431
1432         /* update link parameters */
1433         if (duplex == LINKEVENT_FULL_DUPLEX)
1434                 adapter->link_duplex = DUPLEX_FULL;
1435         else
1436                 adapter->link_duplex = DUPLEX_HALF;
1437         adapter->module_type = module;
1438         adapter->link_autoneg = autoneg;
1439         adapter->link_speed = link_speed;
1440
1441         netxen_advert_link_change(adapter, link_status);
1442 }
1443
1444 static void
1445 netxen_handle_fw_message(int desc_cnt, int index,
1446                 struct nx_host_sds_ring *sds_ring)
1447 {
1448         nx_fw_msg_t msg;
1449         struct status_desc *desc;
1450         int i = 0, opcode;
1451
1452         while (desc_cnt > 0 && i < 8) {
1453                 desc = &sds_ring->desc_head[index];
1454                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1455                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1456
1457                 index = get_next_index(index, sds_ring->num_desc);
1458                 desc_cnt--;
1459         }
1460
1461         opcode = netxen_get_nic_msg_opcode(msg.body[0]);
1462         switch (opcode) {
1463         case NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1464                 netxen_handle_linkevent(sds_ring->adapter, &msg);
1465                 break;
1466         default:
1467                 break;
1468         }
1469 }
1470
1471 static int
1472 netxen_alloc_rx_skb(struct netxen_adapter *adapter,
1473                 struct nx_host_rds_ring *rds_ring,
1474                 struct netxen_rx_buffer *buffer)
1475 {
1476         struct sk_buff *skb;
1477         dma_addr_t dma;
1478         struct pci_dev *pdev = adapter->pdev;
1479
1480         buffer->skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size);
1481         if (!buffer->skb)
1482                 return 1;
1483
1484         skb = buffer->skb;
1485
1486         if (!adapter->ahw.cut_through)
1487                 skb_reserve(skb, 2);
1488
1489         dma = pci_map_single(pdev, skb->data,
1490                         rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1491
1492         if (pci_dma_mapping_error(pdev, dma)) {
1493                 dev_kfree_skb_any(skb);
1494                 buffer->skb = NULL;
1495                 return 1;
1496         }
1497
1498         buffer->skb = skb;
1499         buffer->dma = dma;
1500         buffer->state = NETXEN_BUFFER_BUSY;
1501
1502         return 0;
1503 }
1504
1505 static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
1506                 struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
1507 {
1508         struct netxen_rx_buffer *buffer;
1509         struct sk_buff *skb;
1510
1511         buffer = &rds_ring->rx_buf_arr[index];
1512
1513         pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
1514                         PCI_DMA_FROMDEVICE);
1515
1516         skb = buffer->skb;
1517         if (!skb)
1518                 goto no_skb;
1519
1520         if (likely((adapter->netdev->features & NETIF_F_RXCSUM)
1521             && cksum == STATUS_CKSUM_OK)) {
1522                 adapter->stats.csummed++;
1523                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1524         } else
1525                 skb->ip_summed = CHECKSUM_NONE;
1526
1527         buffer->skb = NULL;
1528 no_skb:
1529         buffer->state = NETXEN_BUFFER_FREE;
1530         return skb;
1531 }
1532
1533 static struct netxen_rx_buffer *
1534 netxen_process_rcv(struct netxen_adapter *adapter,
1535                 struct nx_host_sds_ring *sds_ring,
1536                 int ring, u64 sts_data0)
1537 {
1538         struct net_device *netdev = adapter->netdev;
1539         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1540         struct netxen_rx_buffer *buffer;
1541         struct sk_buff *skb;
1542         struct nx_host_rds_ring *rds_ring;
1543         int index, length, cksum, pkt_offset;
1544
1545         if (unlikely(ring >= adapter->max_rds_rings))
1546                 return NULL;
1547
1548         rds_ring = &recv_ctx->rds_rings[ring];
1549
1550         index = netxen_get_sts_refhandle(sts_data0);
1551         if (unlikely(index >= rds_ring->num_desc))
1552                 return NULL;
1553
1554         buffer = &rds_ring->rx_buf_arr[index];
1555
1556         length = netxen_get_sts_totallength(sts_data0);
1557         cksum  = netxen_get_sts_status(sts_data0);
1558         pkt_offset = netxen_get_sts_pkt_offset(sts_data0);
1559
1560         skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
1561         if (!skb)
1562                 return buffer;
1563
1564         if (length > rds_ring->skb_size)
1565                 skb_put(skb, rds_ring->skb_size);
1566         else
1567                 skb_put(skb, length);
1568
1569
1570         if (pkt_offset)
1571                 skb_pull(skb, pkt_offset);
1572
1573         skb->protocol = eth_type_trans(skb, netdev);
1574
1575         napi_gro_receive(&sds_ring->napi, skb);
1576
1577         adapter->stats.rx_pkts++;
1578         adapter->stats.rxbytes += length;
1579
1580         return buffer;
1581 }
1582
1583 #define TCP_HDR_SIZE            20
1584 #define TCP_TS_OPTION_SIZE      12
1585 #define TCP_TS_HDR_SIZE         (TCP_HDR_SIZE + TCP_TS_OPTION_SIZE)
1586
1587 static struct netxen_rx_buffer *
1588 netxen_process_lro(struct netxen_adapter *adapter,
1589                 struct nx_host_sds_ring *sds_ring,
1590                 int ring, u64 sts_data0, u64 sts_data1)
1591 {
1592         struct net_device *netdev = adapter->netdev;
1593         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1594         struct netxen_rx_buffer *buffer;
1595         struct sk_buff *skb;
1596         struct nx_host_rds_ring *rds_ring;
1597         struct iphdr *iph;
1598         struct tcphdr *th;
1599         bool push, timestamp;
1600         int l2_hdr_offset, l4_hdr_offset;
1601         int index;
1602         u16 lro_length, length, data_offset;
1603         u32 seq_number;
1604         u8 vhdr_len = 0;
1605
1606         if (unlikely(ring > adapter->max_rds_rings))
1607                 return NULL;
1608
1609         rds_ring = &recv_ctx->rds_rings[ring];
1610
1611         index = netxen_get_lro_sts_refhandle(sts_data0);
1612         if (unlikely(index > rds_ring->num_desc))
1613                 return NULL;
1614
1615         buffer = &rds_ring->rx_buf_arr[index];
1616
1617         timestamp = netxen_get_lro_sts_timestamp(sts_data0);
1618         lro_length = netxen_get_lro_sts_length(sts_data0);
1619         l2_hdr_offset = netxen_get_lro_sts_l2_hdr_offset(sts_data0);
1620         l4_hdr_offset = netxen_get_lro_sts_l4_hdr_offset(sts_data0);
1621         push = netxen_get_lro_sts_push_flag(sts_data0);
1622         seq_number = netxen_get_lro_sts_seq_number(sts_data1);
1623
1624         skb = netxen_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1625         if (!skb)
1626                 return buffer;
1627
1628         if (timestamp)
1629                 data_offset = l4_hdr_offset + TCP_TS_HDR_SIZE;
1630         else
1631                 data_offset = l4_hdr_offset + TCP_HDR_SIZE;
1632
1633         skb_put(skb, lro_length + data_offset);
1634
1635         skb_pull(skb, l2_hdr_offset);
1636         skb->protocol = eth_type_trans(skb, netdev);
1637
1638         if (skb->protocol == htons(ETH_P_8021Q))
1639                 vhdr_len = VLAN_HLEN;
1640         iph = (struct iphdr *)(skb->data + vhdr_len);
1641         th = (struct tcphdr *)((skb->data + vhdr_len) + (iph->ihl << 2));
1642
1643         length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1644         iph->tot_len = htons(length);
1645         iph->check = 0;
1646         iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
1647         th->psh = push;
1648         th->seq = htonl(seq_number);
1649
1650         length = skb->len;
1651
1652         if (adapter->flags & NETXEN_FW_MSS_CAP)
1653                 skb_shinfo(skb)->gso_size  =  netxen_get_lro_sts_mss(sts_data1);
1654
1655         netif_receive_skb(skb);
1656
1657         adapter->stats.lro_pkts++;
1658         adapter->stats.rxbytes += length;
1659
1660         return buffer;
1661 }
1662
1663 #define netxen_merge_rx_buffers(list, head) \
1664         do { list_splice_tail_init(list, head); } while (0);
1665
1666 int
1667 netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
1668 {
1669         struct netxen_adapter *adapter = sds_ring->adapter;
1670
1671         struct list_head *cur;
1672
1673         struct status_desc *desc;
1674         struct netxen_rx_buffer *rxbuf;
1675
1676         u32 consumer = sds_ring->consumer;
1677
1678         int count = 0;
1679         u64 sts_data0, sts_data1;
1680         int opcode, ring = 0, desc_cnt;
1681
1682         while (count < max) {
1683                 desc = &sds_ring->desc_head[consumer];
1684                 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1685
1686                 if (!(sts_data0 & STATUS_OWNER_HOST))
1687                         break;
1688
1689                 desc_cnt = netxen_get_sts_desc_cnt(sts_data0);
1690
1691                 opcode = netxen_get_sts_opcode(sts_data0);
1692
1693                 switch (opcode) {
1694                 case NETXEN_NIC_RXPKT_DESC:
1695                 case NETXEN_OLD_RXPKT_DESC:
1696                 case NETXEN_NIC_SYN_OFFLOAD:
1697                         ring = netxen_get_sts_type(sts_data0);
1698                         rxbuf = netxen_process_rcv(adapter, sds_ring,
1699                                         ring, sts_data0);
1700                         break;
1701                 case NETXEN_NIC_LRO_DESC:
1702                         ring = netxen_get_lro_sts_type(sts_data0);
1703                         sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1704                         rxbuf = netxen_process_lro(adapter, sds_ring,
1705                                         ring, sts_data0, sts_data1);
1706                         break;
1707                 case NETXEN_NIC_RESPONSE_DESC:
1708                         netxen_handle_fw_message(desc_cnt, consumer, sds_ring);
1709                 default:
1710                         goto skip;
1711                 }
1712
1713                 WARN_ON(desc_cnt > 1);
1714
1715                 if (rxbuf)
1716                         list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1717
1718 skip:
1719                 for (; desc_cnt > 0; desc_cnt--) {
1720                         desc = &sds_ring->desc_head[consumer];
1721                         desc->status_desc_data[0] =
1722                                 cpu_to_le64(STATUS_OWNER_PHANTOM);
1723                         consumer = get_next_index(consumer, sds_ring->num_desc);
1724                 }
1725                 count++;
1726         }
1727
1728         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1729                 struct nx_host_rds_ring *rds_ring =
1730                         &adapter->recv_ctx.rds_rings[ring];
1731
1732                 if (!list_empty(&sds_ring->free_list[ring])) {
1733                         list_for_each(cur, &sds_ring->free_list[ring]) {
1734                                 rxbuf = list_entry(cur,
1735                                                 struct netxen_rx_buffer, list);
1736                                 netxen_alloc_rx_skb(adapter, rds_ring, rxbuf);
1737                         }
1738                         spin_lock(&rds_ring->lock);
1739                         netxen_merge_rx_buffers(&sds_ring->free_list[ring],
1740                                                 &rds_ring->free_list);
1741                         spin_unlock(&rds_ring->lock);
1742                 }
1743
1744                 netxen_post_rx_buffers_nodb(adapter, rds_ring);
1745         }
1746
1747         if (count) {
1748                 sds_ring->consumer = consumer;
1749                 NXWRIO(adapter, sds_ring->crb_sts_consumer, consumer);
1750         }
1751
1752         return count;
1753 }
1754
1755 /* Process Command status ring */
1756 int netxen_process_cmd_ring(struct netxen_adapter *adapter)
1757 {
1758         u32 sw_consumer, hw_consumer;
1759         int count = 0, i;
1760         struct netxen_cmd_buffer *buffer;
1761         struct pci_dev *pdev = adapter->pdev;
1762         struct net_device *netdev = adapter->netdev;
1763         struct netxen_skb_frag *frag;
1764         int done = 0;
1765         struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1766
1767         if (!spin_trylock(&adapter->tx_clean_lock))
1768                 return 1;
1769
1770         sw_consumer = tx_ring->sw_consumer;
1771         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1772
1773         while (sw_consumer != hw_consumer) {
1774                 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1775                 if (buffer->skb) {
1776                         frag = &buffer->frag_array[0];
1777                         pci_unmap_single(pdev, frag->dma, frag->length,
1778                                          PCI_DMA_TODEVICE);
1779                         frag->dma = 0ULL;
1780                         for (i = 1; i < buffer->frag_count; i++) {
1781                                 frag++; /* Get the next frag */
1782                                 pci_unmap_page(pdev, frag->dma, frag->length,
1783                                                PCI_DMA_TODEVICE);
1784                                 frag->dma = 0ULL;
1785                         }
1786
1787                         adapter->stats.xmitfinished++;
1788                         dev_kfree_skb_any(buffer->skb);
1789                         buffer->skb = NULL;
1790                 }
1791
1792                 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1793                 if (++count >= MAX_STATUS_HANDLE)
1794                         break;
1795         }
1796
1797         if (count && netif_running(netdev)) {
1798                 tx_ring->sw_consumer = sw_consumer;
1799
1800                 smp_mb();
1801
1802                 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev))
1803                         if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
1804                                 netif_wake_queue(netdev);
1805                 adapter->tx_timeo_cnt = 0;
1806         }
1807         /*
1808          * If everything is freed up to consumer then check if the ring is full
1809          * If the ring is full then check if more needs to be freed and
1810          * schedule the call back again.
1811          *
1812          * This happens when there are 2 CPUs. One could be freeing and the
1813          * other filling it. If the ring is full when we get out of here and
1814          * the card has already interrupted the host then the host can miss the
1815          * interrupt.
1816          *
1817          * There is still a possible race condition and the host could miss an
1818          * interrupt. The card has to take care of this.
1819          */
1820         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1821         done = (sw_consumer == hw_consumer);
1822         spin_unlock(&adapter->tx_clean_lock);
1823
1824         return done;
1825 }
1826
1827 void
1828 netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
1829         struct nx_host_rds_ring *rds_ring)
1830 {
1831         struct rcv_desc *pdesc;
1832         struct netxen_rx_buffer *buffer;
1833         int producer, count = 0;
1834         netxen_ctx_msg msg = 0;
1835         struct list_head *head;
1836
1837         producer = rds_ring->producer;
1838
1839         head = &rds_ring->free_list;
1840         while (!list_empty(head)) {
1841
1842                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1843
1844                 if (!buffer->skb) {
1845                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1846                                 break;
1847                 }
1848
1849                 count++;
1850                 list_del(&buffer->list);
1851
1852                 /* make a rcv descriptor  */
1853                 pdesc = &rds_ring->desc_head[producer];
1854                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1855                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1856                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1857
1858                 producer = get_next_index(producer, rds_ring->num_desc);
1859         }
1860
1861         if (count) {
1862                 rds_ring->producer = producer;
1863                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1864                                 (producer-1) & (rds_ring->num_desc-1));
1865
1866                 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1867                         /*
1868                          * Write a doorbell msg to tell phanmon of change in
1869                          * receive ring producer
1870                          * Only for firmware version < 4.0.0
1871                          */
1872                         netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
1873                         netxen_set_msg_privid(msg);
1874                         netxen_set_msg_count(msg,
1875                                              ((producer - 1) &
1876                                               (rds_ring->num_desc - 1)));
1877                         netxen_set_msg_ctxid(msg, adapter->portnum);
1878                         netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
1879                         NXWRIO(adapter, DB_NORMALIZE(adapter,
1880                                         NETXEN_RCV_PRODUCER_OFFSET), msg);
1881                 }
1882         }
1883 }
1884
1885 static void
1886 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
1887                 struct nx_host_rds_ring *rds_ring)
1888 {
1889         struct rcv_desc *pdesc;
1890         struct netxen_rx_buffer *buffer;
1891         int producer, count = 0;
1892         struct list_head *head;
1893
1894         if (!spin_trylock(&rds_ring->lock))
1895                 return;
1896
1897         producer = rds_ring->producer;
1898
1899         head = &rds_ring->free_list;
1900         while (!list_empty(head)) {
1901
1902                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1903
1904                 if (!buffer->skb) {
1905                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1906                                 break;
1907                 }
1908
1909                 count++;
1910                 list_del(&buffer->list);
1911
1912                 /* make a rcv descriptor  */
1913                 pdesc = &rds_ring->desc_head[producer];
1914                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1915                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1916                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1917
1918                 producer = get_next_index(producer, rds_ring->num_desc);
1919         }
1920
1921         if (count) {
1922                 rds_ring->producer = producer;
1923                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1924                                 (producer - 1) & (rds_ring->num_desc - 1));
1925         }
1926         spin_unlock(&rds_ring->lock);
1927 }
1928
1929 void netxen_nic_clear_stats(struct netxen_adapter *adapter)
1930 {
1931         memset(&adapter->stats, 0, sizeof(adapter->stats));
1932 }
1933