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         spin_lock_bh(&adapter->tx_clean_lock);
 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         spin_unlock_bh(&adapter->tx_clean_lock);
 163 }
 164
 165 void netxen_free_sw_resources(struct netxen_adapter *adapter)
 166 {
 167         struct netxen_recv_context *recv_ctx;
 168         struct nx_host_rds_ring *rds_ring;
 169         struct nx_host_tx_ring *tx_ring;
 170         int ring;
 171
 172         recv_ctx = &adapter->recv_ctx;
 173
 174         if (recv_ctx->rds_rings == NULL)
 175                 goto skip_rds;
 176
 177         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 178                 rds_ring = &recv_ctx->rds_rings[ring];
 179                 vfree(rds_ring->rx_buf_arr);
 180                 rds_ring->rx_buf_arr = NULL;
 181         }
 182         kfree(recv_ctx->rds_rings);
 183
 184 skip_rds:
 185         if (adapter->tx_ring == NULL)
 186                 return;
 187
 188         tx_ring = adapter->tx_ring;
 189         vfree(tx_ring->cmd_buf_arr);
 190         kfree(tx_ring);
 191         adapter->tx_ring = NULL;
 192 }
 193
 194 int netxen_alloc_sw_resources(struct netxen_adapter *adapter)
 195 {
 196         struct netxen_recv_context *recv_ctx;
 197         struct nx_host_rds_ring *rds_ring;
 198         struct nx_host_sds_ring *sds_ring;
 199         struct nx_host_tx_ring *tx_ring;
 200         struct netxen_rx_buffer *rx_buf;
 201         int ring, i;
 202
 203         struct netxen_cmd_buffer *cmd_buf_arr;
 204         struct net_device *netdev = adapter->netdev;
 205
 206         tx_ring = kzalloc(sizeof(struct nx_host_tx_ring), GFP_KERNEL);
 207         if (tx_ring == NULL)
 208                 return -ENOMEM;
 209
 210         adapter->tx_ring = tx_ring;
 211
 212         tx_ring->num_desc = adapter->num_txd;
 213         tx_ring->txq = netdev_get_tx_queue(netdev, 0);
 214
 215         cmd_buf_arr = vzalloc(TX_BUFF_RINGSIZE(tx_ring));
 216         if (cmd_buf_arr == NULL)
 217                 goto err_out;
 218
 219         tx_ring->cmd_buf_arr = cmd_buf_arr;
 220
 221         recv_ctx = &adapter->recv_ctx;
 222
 223         rds_ring = kcalloc(adapter->max_rds_rings,
 224                            sizeof(struct nx_host_rds_ring), GFP_KERNEL);
 225         if (rds_ring == NULL)
 226                 goto err_out;
 227
 228         recv_ctx->rds_rings = rds_ring;
 229
 230         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 231                 rds_ring = &recv_ctx->rds_rings[ring];
 232                 switch (ring) {
 233                 case RCV_RING_NORMAL:
 234                         rds_ring->num_desc = adapter->num_rxd;
 235                         if (adapter->ahw.cut_through) {
 236                                 rds_ring->dma_size =
 237                                         NX_CT_DEFAULT_RX_BUF_LEN;
 238                                 rds_ring->skb_size =
 239                                         NX_CT_DEFAULT_RX_BUF_LEN;
 240                         } else {
 241                                 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 242                                         rds_ring->dma_size =
 243                                                 NX_P3_RX_BUF_MAX_LEN;
 244                                 else
 245                                         rds_ring->dma_size =
 246                                                 NX_P2_RX_BUF_MAX_LEN;
 247                                 rds_ring->skb_size =
 248                                         rds_ring->dma_size + NET_IP_ALIGN;
 249                         }
 250                         break;
 251
 252                 case RCV_RING_JUMBO:
 253                         rds_ring->num_desc = adapter->num_jumbo_rxd;
 254                         if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 255                                 rds_ring->dma_size =
 256                                         NX_P3_RX_JUMBO_BUF_MAX_LEN;
 257                         else
 258                                 rds_ring->dma_size =
 259                                         NX_P2_RX_JUMBO_BUF_MAX_LEN;
 260
 261                         if (adapter->capabilities & NX_CAP0_HW_LRO)
 262                                 rds_ring->dma_size += NX_LRO_BUFFER_EXTRA;
 263
 264                         rds_ring->skb_size =
 265                                 rds_ring->dma_size + NET_IP_ALIGN;
 266                         break;
 267
 268                 case RCV_RING_LRO:
 269                         rds_ring->num_desc = adapter->num_lro_rxd;
 270                         rds_ring->dma_size = NX_RX_LRO_BUFFER_LENGTH;
 271                         rds_ring->skb_size = rds_ring->dma_size + NET_IP_ALIGN;
 272                         break;
 273
 274                 }
 275                 rds_ring->rx_buf_arr = vzalloc(RCV_BUFF_RINGSIZE(rds_ring));
 276                 if (rds_ring->rx_buf_arr == NULL)
 277                         /* free whatever was already allocated */
 278                         goto err_out;
 279
 280                 INIT_LIST_HEAD(&rds_ring->free_list);
 281                 /*
 282                  * Now go through all of them, set reference handles
 283                  * and put them in the queues.
 284                  */
 285                 rx_buf = rds_ring->rx_buf_arr;
 286                 for (i = 0; i < rds_ring->num_desc; i++) {
 287                         list_add_tail(&rx_buf->list,
 288                                         &rds_ring->free_list);
 289                         rx_buf->ref_handle = i;
 290                         rx_buf->state = NETXEN_BUFFER_FREE;
 291                         rx_buf++;
 292                 }
 293                 spin_lock_init(&rds_ring->lock);
 294         }
 295
 296         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 297                 sds_ring = &recv_ctx->sds_rings[ring];
 298                 sds_ring->irq = adapter->msix_entries[ring].vector;
 299                 sds_ring->adapter = adapter;
 300                 sds_ring->num_desc = adapter->num_rxd;
 301
 302                 for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
 303                         INIT_LIST_HEAD(&sds_ring->free_list[i]);
 304         }
 305
 306         return 0;
 307
 308 err_out:
 309         netxen_free_sw_resources(adapter);
 310         return -ENOMEM;
 311 }
 312
 313 /*
 314  * netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
 315  * address to external PCI CRB address.
 316  */
 317 static u32 netxen_decode_crb_addr(u32 addr)
 318 {
 319         int i;
 320         u32 base_addr, offset, pci_base;
 321
 322         crb_addr_transform_setup();
 323
 324         pci_base = NETXEN_ADDR_ERROR;
 325         base_addr = addr & 0xfff00000;
 326         offset = addr & 0x000fffff;
 327
 328         for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
 329                 if (crb_addr_xform[i] == base_addr) {
 330                         pci_base = i << 20;
 331                         break;
 332                 }
 333         }
 334         if (pci_base == NETXEN_ADDR_ERROR)
 335                 return pci_base;
 336         else
 337                 return pci_base + offset;
 338 }
 339
 340 #define NETXEN_MAX_ROM_WAIT_USEC        100
 341
 342 static int netxen_wait_rom_done(struct netxen_adapter *adapter)
 343 {
 344         long timeout = 0;
 345         long done = 0;
 346
 347         cond_resched();
 348
 349         while (done == 0) {
 350                 done = NXRD32(adapter, NETXEN_ROMUSB_GLB_STATUS);
 351                 done &= 2;
 352                 if (++timeout >= NETXEN_MAX_ROM_WAIT_USEC) {
 353                         dev_err(&adapter->pdev->dev,
 354                                 "Timeout reached  waiting for rom done");
 355                         return -EIO;
 356                 }
 357                 udelay(1);
 358         }
 359         return 0;
 360 }
 361
 362 static int do_rom_fast_read(struct netxen_adapter *adapter,
 363                             int addr, int *valp)
 364 {
 365         NXWR32(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
 366         NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 367         NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
 368         NXWR32(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
 369         if (netxen_wait_rom_done(adapter)) {
 370                 printk("Error waiting for rom done\n");
 371                 return -EIO;
 372         }
 373         /* reset abyte_cnt and dummy_byte_cnt */
 374         NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
 375         udelay(10);
 376         NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 377
 378         *valp = NXRD32(adapter, NETXEN_ROMUSB_ROM_RDATA);
 379         return 0;
 380 }
 381
 382 static int do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 383                                   u8 *bytes, size_t size)
 384 {
 385         int addridx;
 386         int ret = 0;
 387
 388         for (addridx = addr; addridx < (addr + size); addridx += 4) {
 389                 int v;
 390                 ret = do_rom_fast_read(adapter, addridx, &v);
 391                 if (ret != 0)
 392                         break;
 393                 *(__le32 *)bytes = cpu_to_le32(v);
 394                 bytes += 4;
 395         }
 396
 397         return ret;
 398 }
 399
 400 int
 401 netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 402                                 u8 *bytes, size_t size)
 403 {
 404         int ret;
 405
 406         ret = netxen_rom_lock(adapter);
 407         if (ret < 0)
 408                 return ret;
 409
 410         ret = do_rom_fast_read_words(adapter, addr, bytes, size);
 411
 412         netxen_rom_unlock(adapter);
 413         return ret;
 414 }
 415
 416 int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
 417 {
 418         int ret;
 419
 420         if (netxen_rom_lock(adapter) != 0)
 421                 return -EIO;
 422
 423         ret = do_rom_fast_read(adapter, addr, valp);
 424         netxen_rom_unlock(adapter);
 425         return ret;
 426 }
 427
 428 #define NETXEN_BOARDTYPE                0x4008
 429 #define NETXEN_BOARDNUM                 0x400c
 430 #define NETXEN_CHIPNUM                  0x4010
 431
 432 int netxen_pinit_from_rom(struct netxen_adapter *adapter)
 433 {
 434         int addr, val;
 435         int i, n, init_delay = 0;
 436         struct crb_addr_pair *buf;
 437         unsigned offset;
 438         u32 off;
 439
 440         /* resetall */
 441         netxen_rom_lock(adapter);
 442         NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0xfeffffff);
 443         netxen_rom_unlock(adapter);
 444
 445         if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 446                 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 447                         (n != 0xcafecafe) ||
 448                         netxen_rom_fast_read(adapter, 4, &n) != 0) {
 449                         printk(KERN_ERR "%s: ERROR Reading crb_init area: "
 450                                         "n: %08x\n", netxen_nic_driver_name, n);
 451                         return -EIO;
 452                 }
 453                 offset = n & 0xffffU;
 454                 n = (n >> 16) & 0xffffU;
 455         } else {
 456                 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 457                         !(n & 0x80000000)) {
 458                         printk(KERN_ERR "%s: ERROR Reading crb_init area: "
 459                                         "n: %08x\n", netxen_nic_driver_name, n);
 460                         return -EIO;
 461                 }
 462                 offset = 1;
 463                 n &= ~0x80000000;
 464         }
 465
 466         if (n >= 1024) {
 467                 printk(KERN_ERR "%s:n=0x%x Error! NetXen card flash not"
 468                        " initialized.\n", __func__, n);
 469                 return -EIO;
 470         }
 471
 472         buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
 473         if (buf == NULL)
 474                 return -ENOMEM;
 475
 476         for (i = 0; i < n; i++) {
 477                 if (netxen_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
 478                 netxen_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
 479                         kfree(buf);
 480                         return -EIO;
 481                 }
 482
 483                 buf[i].addr = addr;
 484                 buf[i].data = val;
 485
 486         }
 487
 488         for (i = 0; i < n; i++) {
 489
 490                 off = netxen_decode_crb_addr(buf[i].addr);
 491                 if (off == NETXEN_ADDR_ERROR) {
 492                         printk(KERN_ERR"CRB init value out of range %x\n",
 493                                         buf[i].addr);
 494                         continue;
 495                 }
 496                 off += NETXEN_PCI_CRBSPACE;
 497
 498                 if (off & 1)
 499                         continue;
 500
 501                 /* skipping cold reboot MAGIC */
 502                 if (off == NETXEN_CAM_RAM(0x1fc))
 503                         continue;
 504
 505                 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 506                         if (off == (NETXEN_CRB_I2C0 + 0x1c))
 507                                 continue;
 508                         /* do not reset PCI */
 509                         if (off == (ROMUSB_GLB + 0xbc))
 510                                 continue;
 511                         if (off == (ROMUSB_GLB + 0xa8))
 512                                 continue;
 513                         if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
 514                                 continue;
 515                         if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
 516                                 continue;
 517                         if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
 518                                 continue;
 519                         if ((off & 0x0ff00000) == NETXEN_CRB_DDR_NET)
 520                                 continue;
 521                         if (off == (NETXEN_CRB_PEG_NET_1 + 0x18) &&
 522                                 !NX_IS_REVISION_P3P(adapter->ahw.revision_id))
 523                                 buf[i].data = 0x1020;
 524                         /* skip the function enable register */
 525                         if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION))
 526                                 continue;
 527                         if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION2))
 528                                 continue;
 529                         if ((off & 0x0ff00000) == NETXEN_CRB_SMB)
 530                                 continue;
 531                 }
 532
 533                 init_delay = 1;
 534                 /* After writing this register, HW needs time for CRB */
 535                 /* to quiet down (else crb_window returns 0xffffffff) */
 536                 if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
 537                         init_delay = 1000;
 538                         if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 539                                 /* hold xdma in reset also */
 540                                 buf[i].data = NETXEN_NIC_XDMA_RESET;
 541                                 buf[i].data = 0x8000ff;
 542                         }
 543                 }
 544
 545                 NXWR32(adapter, off, buf[i].data);
 546
 547                 msleep(init_delay);
 548         }
 549         kfree(buf);
 550
 551         /* disable_peg_cache_all */
 552
 553         /* unreset_net_cache */
 554         if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 555                 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
 556                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, (val & 0xffffff0f));
 557         }
 558
 559         /* p2dn replyCount */
 560         NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
 561         /* disable_peg_cache 0 */
 562         NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0x4c, 8);
 563         /* disable_peg_cache 1 */
 564         NXWR32(adapter, NETXEN_CRB_PEG_NET_I + 0x4c, 8);
 565
 566         /* peg_clr_all */
 567
 568         /* peg_clr 0 */
 569         NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x8, 0);
 570         NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0xc, 0);
 571         /* peg_clr 1 */
 572         NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0x8, 0);
 573         NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0xc, 0);
 574         /* peg_clr 2 */
 575         NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0x8, 0);
 576         NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0xc, 0);
 577         /* peg_clr 3 */
 578         NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0x8, 0);
 579         NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0xc, 0);
 580         return 0;
 581 }
 582
 583 static struct uni_table_desc *nx_get_table_desc(const u8 *unirom, int section)
 584 {
 585         uint32_t i;
 586         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 587         __le32 entries = cpu_to_le32(directory->num_entries);
 588
 589         for (i = 0; i < entries; i++) {
 590
 591                 __le32 offs = cpu_to_le32(directory->findex) +
 592                                 (i * cpu_to_le32(directory->entry_size));
 593                 __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
 594
 595                 if (tab_type == section)
 596                         return (struct uni_table_desc *) &unirom[offs];
 597         }
 598
 599         return NULL;
 600 }
 601
 602 #define QLCNIC_FILEHEADER_SIZE  (14 * 4)
 603
 604 static int
 605 netxen_nic_validate_header(struct netxen_adapter *adapter)
 606 {
 607         const u8 *unirom = adapter->fw->data;
 608         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 609         u32 fw_file_size = adapter->fw->size;
 610         u32 tab_size;
 611         __le32 entries;
 612         __le32 entry_size;
 613
 614         if (fw_file_size < QLCNIC_FILEHEADER_SIZE)
 615                 return -EINVAL;
 616
 617         entries = cpu_to_le32(directory->num_entries);
 618         entry_size = cpu_to_le32(directory->entry_size);
 619         tab_size = cpu_to_le32(directory->findex) + (entries * entry_size);
 620
 621         if (fw_file_size < tab_size)
 622                 return -EINVAL;
 623
 624         return 0;
 625 }
 626
 627 static int
 628 netxen_nic_validate_bootld(struct netxen_adapter *adapter)
 629 {
 630         struct uni_table_desc *tab_desc;
 631         struct uni_data_desc *descr;
 632         const u8 *unirom = adapter->fw->data;
 633         __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 634                                 NX_UNI_BOOTLD_IDX_OFF));
 635         u32 offs;
 636         u32 tab_size;
 637         u32 data_size;
 638
 639         tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_BOOTLD);
 640
 641         if (!tab_desc)
 642                 return -EINVAL;
 643
 644         tab_size = cpu_to_le32(tab_desc->findex) +
 645                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 646
 647         if (adapter->fw->size < tab_size)
 648                 return -EINVAL;
 649
 650         offs = cpu_to_le32(tab_desc->findex) +
 651                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 652         descr = (struct uni_data_desc *)&unirom[offs];
 653
 654         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 655
 656         if (adapter->fw->size < data_size)
 657                 return -EINVAL;
 658
 659         return 0;
 660 }
 661
 662 static int
 663 netxen_nic_validate_fw(struct netxen_adapter *adapter)
 664 {
 665         struct uni_table_desc *tab_desc;
 666         struct uni_data_desc *descr;
 667         const u8 *unirom = adapter->fw->data;
 668         __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 669                                 NX_UNI_FIRMWARE_IDX_OFF));
 670         u32 offs;
 671         u32 tab_size;
 672         u32 data_size;
 673
 674         tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_FW);
 675
 676         if (!tab_desc)
 677                 return -EINVAL;
 678
 679         tab_size = cpu_to_le32(tab_desc->findex) +
 680                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 681
 682         if (adapter->fw->size < tab_size)
 683                 return -EINVAL;
 684
 685         offs = cpu_to_le32(tab_desc->findex) +
 686                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 687         descr = (struct uni_data_desc *)&unirom[offs];
 688         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 689
 690         if (adapter->fw->size < data_size)
 691                 return -EINVAL;
 692
 693         return 0;
 694 }
 695
 696
 697 static int
 698 netxen_nic_validate_product_offs(struct netxen_adapter *adapter)
 699 {
 700         struct uni_table_desc *ptab_descr;
 701         const u8 *unirom = adapter->fw->data;
 702         int mn_present = (NX_IS_REVISION_P2(adapter->ahw.revision_id)) ?
 703                         1 : netxen_p3_has_mn(adapter);
 704         __le32 entries;
 705         __le32 entry_size;
 706         u32 tab_size;
 707         u32 i;
 708
 709         ptab_descr = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_PRODUCT_TBL);
 710         if (ptab_descr == NULL)
 711                 return -EINVAL;
 712
 713         entries = cpu_to_le32(ptab_descr->num_entries);
 714         entry_size = cpu_to_le32(ptab_descr->entry_size);
 715         tab_size = cpu_to_le32(ptab_descr->findex) + (entries * entry_size);
 716
 717         if (adapter->fw->size < tab_size)
 718                 return -EINVAL;
 719
 720 nomn:
 721         for (i = 0; i < entries; i++) {
 722
 723                 __le32 flags, file_chiprev, offs;
 724                 u8 chiprev = adapter->ahw.revision_id;
 725                 uint32_t flagbit;
 726
 727                 offs = cpu_to_le32(ptab_descr->findex) +
 728                                 (i * cpu_to_le32(ptab_descr->entry_size));
 729                 flags = cpu_to_le32(*((int *)&unirom[offs] + NX_UNI_FLAGS_OFF));
 730                 file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
 731                                                         NX_UNI_CHIP_REV_OFF));
 732
 733                 flagbit = mn_present ? 1 : 2;
 734
 735                 if ((chiprev == file_chiprev) &&
 736                                         ((1ULL << flagbit) & flags)) {
 737                         adapter->file_prd_off = offs;
 738                         return 0;
 739                 }
 740         }
 741
 742         if (mn_present && NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 743                 mn_present = 0;
 744                 goto nomn;
 745         }
 746
 747         return -EINVAL;
 748 }
 749
 750 static int
 751 netxen_nic_validate_unified_romimage(struct netxen_adapter *adapter)
 752 {
 753         if (netxen_nic_validate_header(adapter)) {
 754                 dev_err(&adapter->pdev->dev,
 755                                 "unified image: header validation failed\n");
 756                 return -EINVAL;
 757         }
 758
 759         if (netxen_nic_validate_product_offs(adapter)) {
 760                 dev_err(&adapter->pdev->dev,
 761                                 "unified image: product validation failed\n");
 762                 return -EINVAL;
 763         }
 764
 765         if (netxen_nic_validate_bootld(adapter)) {
 766                 dev_err(&adapter->pdev->dev,
 767                                 "unified image: bootld validation failed\n");
 768                 return -EINVAL;
 769         }
 770
 771         if (netxen_nic_validate_fw(adapter)) {
 772                 dev_err(&adapter->pdev->dev,
 773                                 "unified image: firmware validation failed\n");
 774                 return -EINVAL;
 775         }
 776
 777         return 0;
 778 }
 779
 780 static struct uni_data_desc *nx_get_data_desc(struct netxen_adapter *adapter,
 781                         u32 section, u32 idx_offset)
 782 {
 783         const u8 *unirom = adapter->fw->data;
 784         int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 785                                                                 idx_offset));
 786         struct uni_table_desc *tab_desc;
 787         __le32 offs;
 788
 789         tab_desc = nx_get_table_desc(unirom, section);
 790
 791         if (tab_desc == NULL)
 792                 return NULL;
 793
 794         offs = cpu_to_le32(tab_desc->findex) +
 795                         (cpu_to_le32(tab_desc->entry_size) * idx);
 796
 797         return (struct uni_data_desc *)&unirom[offs];
 798 }
 799
 800 static u8 *
 801 nx_get_bootld_offs(struct netxen_adapter *adapter)
 802 {
 803         u32 offs = NETXEN_BOOTLD_START;
 804
 805         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 806                 offs = cpu_to_le32((nx_get_data_desc(adapter,
 807                                         NX_UNI_DIR_SECT_BOOTLD,
 808                                         NX_UNI_BOOTLD_IDX_OFF))->findex);
 809
 810         return (u8 *)&adapter->fw->data[offs];
 811 }
 812
 813 static u8 *
 814 nx_get_fw_offs(struct netxen_adapter *adapter)
 815 {
 816         u32 offs = NETXEN_IMAGE_START;
 817
 818         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 819                 offs = cpu_to_le32((nx_get_data_desc(adapter,
 820                                         NX_UNI_DIR_SECT_FW,
 821                                         NX_UNI_FIRMWARE_IDX_OFF))->findex);
 822
 823         return (u8 *)&adapter->fw->data[offs];
 824 }
 825
 826 static __le32
 827 nx_get_fw_size(struct netxen_adapter *adapter)
 828 {
 829         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 830                 return cpu_to_le32((nx_get_data_desc(adapter,
 831                                         NX_UNI_DIR_SECT_FW,
 832                                         NX_UNI_FIRMWARE_IDX_OFF))->size);
 833         else
 834                 return cpu_to_le32(
 835                                 *(u32 *)&adapter->fw->data[NX_FW_SIZE_OFFSET]);
 836 }
 837
 838 static __le32
 839 nx_get_fw_version(struct netxen_adapter *adapter)
 840 {
 841         struct uni_data_desc *fw_data_desc;
 842         const struct firmware *fw = adapter->fw;
 843         __le32 major, minor, sub;
 844         const u8 *ver_str;
 845         int i, ret = 0;
 846
 847         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 848
 849                 fw_data_desc = nx_get_data_desc(adapter,
 850                                 NX_UNI_DIR_SECT_FW, NX_UNI_FIRMWARE_IDX_OFF);
 851                 ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
 852                                 cpu_to_le32(fw_data_desc->size) - 17;
 853
 854                 for (i = 0; i < 12; i++) {
 855                         if (!strncmp(&ver_str[i], "REV=", 4)) {
 856                                 ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
 857                                                         &major, &minor, &sub);
 858                                 break;
 859                         }
 860                 }
 861
 862                 if (ret != 3)
 863                         return 0;
 864
 865                 return major + (minor << 8) + (sub << 16);
 866
 867         } else
 868                 return cpu_to_le32(*(u32 *)&fw->data[NX_FW_VERSION_OFFSET]);
 869 }
 870
 871 static __le32
 872 nx_get_bios_version(struct netxen_adapter *adapter)
 873 {
 874         const struct firmware *fw = adapter->fw;
 875         __le32 bios_ver, prd_off = adapter->file_prd_off;
 876
 877         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 878                 bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
 879                                                 + NX_UNI_BIOS_VERSION_OFF));
 880                 return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) +
 881                                                         (bios_ver >> 24);
 882         } else
 883                 return cpu_to_le32(*(u32 *)&fw->data[NX_BIOS_VERSION_OFFSET]);
 884
 885 }
 886
 887 int
 888 netxen_need_fw_reset(struct netxen_adapter *adapter)
 889 {
 890         u32 count, old_count;
 891         u32 val, version, major, minor, build;
 892         int i, timeout;
 893         u8 fw_type;
 894
 895         /* NX2031 firmware doesn't support heartbit */
 896         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 897                 return 1;
 898
 899         if (adapter->need_fw_reset)
 900                 return 1;
 901
 902         /* last attempt had failed */
 903         if (NXRD32(adapter, CRB_CMDPEG_STATE) == PHAN_INITIALIZE_FAILED)
 904                 return 1;
 905
 906         old_count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 907
 908         for (i = 0; i < 10; i++) {
 909
 910                 timeout = msleep_interruptible(200);
 911                 if (timeout) {
 912                         NXWR32(adapter, CRB_CMDPEG_STATE,
 913                                         PHAN_INITIALIZE_FAILED);
 914                         return -EINTR;
 915                 }
 916
 917                 count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 918                 if (count != old_count)
 919                         break;
 920         }
 921
 922         /* firmware is dead */
 923         if (count == old_count)
 924                 return 1;
 925
 926         /* check if we have got newer or different file firmware */
 927         if (adapter->fw) {
 928
 929                 val = nx_get_fw_version(adapter);
 930
 931                 version = NETXEN_DECODE_VERSION(val);
 932
 933                 major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
 934                 minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
 935                 build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
 936
 937                 if (version > NETXEN_VERSION_CODE(major, minor, build))
 938                         return 1;
 939
 940                 if (version == NETXEN_VERSION_CODE(major, minor, build) &&
 941                         adapter->fw_type != NX_UNIFIED_ROMIMAGE) {
 942
 943                         val = NXRD32(adapter, NETXEN_MIU_MN_CONTROL);
 944                         fw_type = (val & 0x4) ?
 945                                 NX_P3_CT_ROMIMAGE : NX_P3_MN_ROMIMAGE;
 946
 947                         if (adapter->fw_type != fw_type)
 948                                 return 1;
 949                 }
 950         }
 951
 952         return 0;
 953 }
 954
 955 #define NETXEN_MIN_P3_FW_SUPP   NETXEN_VERSION_CODE(4, 0, 505)
 956
 957 int
 958 netxen_check_flash_fw_compatibility(struct netxen_adapter *adapter)
 959 {
 960         u32 flash_fw_ver, min_fw_ver;
 961
 962         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 963                 return 0;
 964
 965         if (netxen_rom_fast_read(adapter,
 966                         NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
 967                 dev_err(&adapter->pdev->dev, "Unable to read flash fw"
 968                         "version\n");
 969                 return -EIO;
 970         }
 971
 972         flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
 973         min_fw_ver = NETXEN_MIN_P3_FW_SUPP;
 974         if (flash_fw_ver >= min_fw_ver)
 975                 return 0;
 976
 977         dev_info(&adapter->pdev->dev, "Flash fw[%d.%d.%d] is < min fw supported"
 978                 "[4.0.505]. Please update firmware on flash\n",
 979                 _major(flash_fw_ver), _minor(flash_fw_ver),
 980                 _build(flash_fw_ver));
 981         return -EINVAL;
 982 }
 983
 984 static char *fw_name[] = {
 985         NX_P2_MN_ROMIMAGE_NAME,
 986         NX_P3_CT_ROMIMAGE_NAME,
 987         NX_P3_MN_ROMIMAGE_NAME,
 988         NX_UNIFIED_ROMIMAGE_NAME,
 989         NX_FLASH_ROMIMAGE_NAME,
 990 };
 991
 992 int
 993 netxen_load_firmware(struct netxen_adapter *adapter)
 994 {
 995         u64 *ptr64;
 996         u32 i, flashaddr, size;
 997         const struct firmware *fw = adapter->fw;
 998         struct pci_dev *pdev = adapter->pdev;
 999
1000         dev_info(&pdev->dev, "loading firmware from %s\n",
1001                         fw_name[adapter->fw_type]);
1002
1003         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1004                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 1);
1005
1006         if (fw) {
1007                 __le64 data;
1008
1009                 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
1010
1011                 ptr64 = (u64 *)nx_get_bootld_offs(adapter);
1012                 flashaddr = NETXEN_BOOTLD_START;
1013
1014                 for (i = 0; i < size; i++) {
1015                         data = cpu_to_le64(ptr64[i]);
1016
1017                         if (adapter->pci_mem_write(adapter, flashaddr, data))
1018                                 return -EIO;
1019
1020                         flashaddr += 8;
1021                 }
1022
1023                 size = (__force u32)nx_get_fw_size(adapter) / 8;
1024
1025                 ptr64 = (u64 *)nx_get_fw_offs(adapter);
1026                 flashaddr = NETXEN_IMAGE_START;
1027
1028                 for (i = 0; i < size; i++) {
1029                         data = cpu_to_le64(ptr64[i]);
1030
1031                         if (adapter->pci_mem_write(adapter,
1032                                                 flashaddr, data))
1033                                 return -EIO;
1034
1035                         flashaddr += 8;
1036                 }
1037
1038                 size = (__force u32)nx_get_fw_size(adapter) % 8;
1039                 if (size) {
1040                         data = cpu_to_le64(ptr64[i]);
1041
1042                         if (adapter->pci_mem_write(adapter,
1043                                                 flashaddr, data))
1044                                 return -EIO;
1045                 }
1046
1047         } else {
1048                 u64 data;
1049                 u32 hi, lo;
1050
1051                 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
1052                 flashaddr = NETXEN_BOOTLD_START;
1053
1054                 for (i = 0; i < size; i++) {
1055                         if (netxen_rom_fast_read(adapter,
1056                                         flashaddr, (int *)&lo) != 0)
1057                                 return -EIO;
1058                         if (netxen_rom_fast_read(adapter,
1059                                         flashaddr + 4, (int *)&hi) != 0)
1060                                 return -EIO;
1061
1062                         /* hi, lo are already in host endian byteorder */
1063                         data = (((u64)hi << 32) | lo);
1064
1065                         if (adapter->pci_mem_write(adapter,
1066                                                 flashaddr, data))
1067                                 return -EIO;
1068
1069                         flashaddr += 8;
1070                 }
1071         }
1072         msleep(1);
1073
1074         if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
1075                 NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x18, 0x1020);
1076                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001e);
1077         } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1078                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001d);
1079         else {
1080                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CHIP_CLK_CTRL, 0x3fff);
1081                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 0);
1082         }
1083
1084         return 0;
1085 }
1086
1087 static int
1088 netxen_validate_firmware(struct netxen_adapter *adapter)
1089 {
1090         __le32 val;
1091         __le32 flash_fw_ver;
1092         u32 file_fw_ver, min_ver, bios;
1093         struct pci_dev *pdev = adapter->pdev;
1094         const struct firmware *fw = adapter->fw;
1095         u8 fw_type = adapter->fw_type;
1096         u32 crbinit_fix_fw;
1097
1098         if (fw_type == NX_UNIFIED_ROMIMAGE) {
1099                 if (netxen_nic_validate_unified_romimage(adapter))
1100                         return -EINVAL;
1101         } else {
1102                 val = cpu_to_le32(*(u32 *)&fw->data[NX_FW_MAGIC_OFFSET]);
1103                 if ((__force u32)val != NETXEN_BDINFO_MAGIC)
1104                         return -EINVAL;
1105
1106                 if (fw->size < NX_FW_MIN_SIZE)
1107                         return -EINVAL;
1108         }
1109
1110         val = nx_get_fw_version(adapter);
1111
1112         if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1113                 min_ver = NETXEN_MIN_P3_FW_SUPP;
1114         else
1115                 min_ver = NETXEN_VERSION_CODE(3, 4, 216);
1116
1117         file_fw_ver = NETXEN_DECODE_VERSION(val);
1118
1119         if ((_major(file_fw_ver) > _NETXEN_NIC_LINUX_MAJOR) ||
1120             (file_fw_ver < min_ver)) {
1121                 dev_err(&pdev->dev,
1122                                 "%s: firmware version %d.%d.%d unsupported\n",
1123                 fw_name[fw_type], _major(file_fw_ver), _minor(file_fw_ver),
1124                  _build(file_fw_ver));
1125                 return -EINVAL;
1126         }
1127         val = nx_get_bios_version(adapter);
1128         netxen_rom_fast_read(adapter, NX_BIOS_VERSION_OFFSET, (int *)&bios);
1129         if ((__force u32)val != bios) {
1130                 dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
1131                                 fw_name[fw_type]);
1132                 return -EINVAL;
1133         }
1134
1135         if (netxen_rom_fast_read(adapter,
1136                         NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
1137                 dev_err(&pdev->dev, "Unable to read flash fw version\n");
1138                 return -EIO;
1139         }
1140         flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
1141
1142         /* New fw from file is not allowed, if fw on flash is < 4.0.554 */
1143         crbinit_fix_fw = NETXEN_VERSION_CODE(4, 0, 554);
1144         if (file_fw_ver >= crbinit_fix_fw && flash_fw_ver < crbinit_fix_fw &&
1145             NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1146                 dev_err(&pdev->dev, "Incompatibility detected between driver "
1147                         "and firmware version on flash. This configuration "
1148                         "is not recommended. Please update the firmware on "
1149                         "flash immediately\n");
1150                 return -EINVAL;
1151         }
1152
1153         /* check if flashed firmware is newer only for no-mn and P2 case*/
1154         if (!netxen_p3_has_mn(adapter) ||
1155             NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1156                 if (flash_fw_ver > file_fw_ver) {
1157                         dev_info(&pdev->dev, "%s: firmware is older than flash\n",
1158                                 fw_name[fw_type]);
1159                         return -EINVAL;
1160                 }
1161         }
1162
1163         NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
1164         return 0;
1165 }
1166
1167 static void
1168 nx_get_next_fwtype(struct netxen_adapter *adapter)
1169 {
1170         u8 fw_type;
1171
1172         switch (adapter->fw_type) {
1173         case NX_UNKNOWN_ROMIMAGE:
1174                 fw_type = NX_UNIFIED_ROMIMAGE;
1175                 break;
1176
1177         case NX_UNIFIED_ROMIMAGE:
1178                 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id))
1179                         fw_type = NX_FLASH_ROMIMAGE;
1180                 else if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1181                         fw_type = NX_P2_MN_ROMIMAGE;
1182                 else if (netxen_p3_has_mn(adapter))
1183                         fw_type = NX_P3_MN_ROMIMAGE;
1184                 else
1185                         fw_type = NX_P3_CT_ROMIMAGE;
1186                 break;
1187
1188         case NX_P3_MN_ROMIMAGE:
1189                 fw_type = NX_P3_CT_ROMIMAGE;
1190                 break;
1191
1192         case NX_P2_MN_ROMIMAGE:
1193         case NX_P3_CT_ROMIMAGE:
1194         default:
1195                 fw_type = NX_FLASH_ROMIMAGE;
1196                 break;
1197         }
1198
1199         adapter->fw_type = fw_type;
1200 }
1201
1202 static int
1203 netxen_p3_has_mn(struct netxen_adapter *adapter)
1204 {
1205         u32 capability, flashed_ver;
1206         capability = 0;
1207
1208         /* NX2031 always had MN */
1209         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1210                 return 1;
1211
1212         netxen_rom_fast_read(adapter,
1213                         NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
1214         flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
1215
1216         if (flashed_ver >= NETXEN_VERSION_CODE(4, 0, 220)) {
1217
1218                 capability = NXRD32(adapter, NX_PEG_TUNE_CAPABILITY);
1219                 if (capability & NX_PEG_TUNE_MN_PRESENT)
1220                         return 1;
1221         }
1222         return 0;
1223 }
1224
1225 void netxen_request_firmware(struct netxen_adapter *adapter)
1226 {
1227         struct pci_dev *pdev = adapter->pdev;
1228         int rc = 0;
1229
1230         adapter->fw_type = NX_UNKNOWN_ROMIMAGE;
1231
1232 next:
1233         nx_get_next_fwtype(adapter);
1234
1235         if (adapter->fw_type == NX_FLASH_ROMIMAGE) {
1236                 adapter->fw = NULL;
1237         } else {
1238                 rc = request_firmware(&adapter->fw,
1239                                 fw_name[adapter->fw_type], &pdev->dev);
1240                 if (rc != 0)
1241                         goto next;
1242
1243                 rc = netxen_validate_firmware(adapter);
1244                 if (rc != 0) {
1245                         release_firmware(adapter->fw);
1246                         msleep(1);
1247                         goto next;
1248                 }
1249         }
1250 }
1251
1252
1253 void
1254 netxen_release_firmware(struct netxen_adapter *adapter)
1255 {
1256         release_firmware(adapter->fw);
1257         adapter->fw = NULL;
1258 }
1259
1260 int netxen_init_dummy_dma(struct netxen_adapter *adapter)
1261 {
1262         u64 addr;
1263         u32 hi, lo;
1264
1265         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1266                 return 0;
1267
1268         adapter->dummy_dma.addr = pci_alloc_consistent(adapter->pdev,
1269                                  NETXEN_HOST_DUMMY_DMA_SIZE,
1270                                  &adapter->dummy_dma.phys_addr);
1271         if (adapter->dummy_dma.addr == NULL) {
1272                 dev_err(&adapter->pdev->dev,
1273                         "ERROR: Could not allocate dummy DMA memory\n");
1274                 return -ENOMEM;
1275         }
1276
1277         addr = (uint64_t) adapter->dummy_dma.phys_addr;
1278         hi = (addr >> 32) & 0xffffffff;
1279         lo = addr & 0xffffffff;
1280
1281         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
1282         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
1283
1284         return 0;
1285 }
1286
1287 /*
1288  * NetXen DMA watchdog control:
1289  *
1290  *      Bit 0           : enabled => R/O: 1 watchdog active, 0 inactive
1291  *      Bit 1           : disable_request => 1 req disable dma watchdog
1292  *      Bit 2           : enable_request =>  1 req enable dma watchdog
1293  *      Bit 3-31        : unused
1294  */
1295 void netxen_free_dummy_dma(struct netxen_adapter *adapter)
1296 {
1297         int i = 100;
1298         u32 ctrl;
1299
1300         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1301                 return;
1302
1303         if (!adapter->dummy_dma.addr)
1304                 return;
1305
1306         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1307         if ((ctrl & 0x1) != 0) {
1308                 NXWR32(adapter, NETXEN_DMA_WATCHDOG_CTRL, (ctrl | 0x2));
1309
1310                 while ((ctrl & 0x1) != 0) {
1311
1312                         msleep(50);
1313
1314                         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1315
1316                         if (--i == 0)
1317                                 break;
1318                 }
1319         }
1320
1321         if (i) {
1322                 pci_free_consistent(adapter->pdev,
1323                             NETXEN_HOST_DUMMY_DMA_SIZE,
1324                             adapter->dummy_dma.addr,
1325                             adapter->dummy_dma.phys_addr);
1326                 adapter->dummy_dma.addr = NULL;
1327         } else
1328                 dev_err(&adapter->pdev->dev, "dma_watchdog_shutdown failed\n");
1329 }
1330
1331 int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
1332 {
1333         u32 val = 0;
1334         int retries = 60;
1335
1336         if (pegtune_val)
1337                 return 0;
1338
1339         do {
1340                 val = NXRD32(adapter, CRB_CMDPEG_STATE);
1341                 switch (val) {
1342                 case PHAN_INITIALIZE_COMPLETE:
1343                 case PHAN_INITIALIZE_ACK:
1344                         return 0;
1345                 case PHAN_INITIALIZE_FAILED:
1346                         goto out_err;
1347                 default:
1348                         break;
1349                 }
1350
1351                 msleep(500);
1352
1353         } while (--retries);
1354
1355         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
1356
1357 out_err:
1358         dev_warn(&adapter->pdev->dev, "firmware init failed\n");
1359         return -EIO;
1360 }
1361
1362 static int
1363 netxen_receive_peg_ready(struct netxen_adapter *adapter)
1364 {
1365         u32 val = 0;
1366         int retries = 2000;
1367
1368         do {
1369                 val = NXRD32(adapter, CRB_RCVPEG_STATE);
1370
1371                 if (val == PHAN_PEG_RCV_INITIALIZED)
1372                         return 0;
1373
1374                 msleep(10);
1375
1376         } while (--retries);
1377
1378         pr_err("Receive Peg initialization not complete, state: 0x%x.\n", val);
1379         return -EIO;
1380 }
1381
1382 int netxen_init_firmware(struct netxen_adapter *adapter)
1383 {
1384         int err;
1385
1386         err = netxen_receive_peg_ready(adapter);
1387         if (err)
1388                 return err;
1389
1390         NXWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
1391         NXWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
1392         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
1393
1394         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1395                 NXWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
1396
1397         return err;
1398 }
1399
1400 static void
1401 netxen_handle_linkevent(struct netxen_adapter *adapter, nx_fw_msg_t *msg)
1402 {
1403         u32 cable_OUI;
1404         u16 cable_len;
1405         u16 link_speed;
1406         u8  link_status, module, duplex, autoneg;
1407         struct net_device *netdev = adapter->netdev;
1408
1409         adapter->has_link_events = 1;
1410
1411         cable_OUI = msg->body[1] & 0xffffffff;
1412         cable_len = (msg->body[1] >> 32) & 0xffff;
1413         link_speed = (msg->body[1] >> 48) & 0xffff;
1414
1415         link_status = msg->body[2] & 0xff;
1416         duplex = (msg->body[2] >> 16) & 0xff;
1417         autoneg = (msg->body[2] >> 24) & 0xff;
1418
1419         module = (msg->body[2] >> 8) & 0xff;
1420         if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) {
1421                 printk(KERN_INFO "%s: unsupported cable: OUI 0x%x, length %d\n",
1422                                 netdev->name, cable_OUI, cable_len);
1423         } else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) {
1424                 printk(KERN_INFO "%s: unsupported cable length %d\n",
1425                                 netdev->name, cable_len);
1426         }
1427
1428         /* update link parameters */
1429         if (duplex == LINKEVENT_FULL_DUPLEX)
1430                 adapter->link_duplex = DUPLEX_FULL;
1431         else
1432                 adapter->link_duplex = DUPLEX_HALF;
1433         adapter->module_type = module;
1434         adapter->link_autoneg = autoneg;
1435         adapter->link_speed = link_speed;
1436
1437         netxen_advert_link_change(adapter, link_status);
1438 }
1439
1440 static void
1441 netxen_handle_fw_message(int desc_cnt, int index,
1442                 struct nx_host_sds_ring *sds_ring)
1443 {
1444         nx_fw_msg_t msg;
1445         struct status_desc *desc;
1446         int i = 0, opcode;
1447
1448         while (desc_cnt > 0 && i < 8) {
1449                 desc = &sds_ring->desc_head[index];
1450                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1451                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1452
1453                 index = get_next_index(index, sds_ring->num_desc);
1454                 desc_cnt--;
1455         }
1456
1457         opcode = netxen_get_nic_msg_opcode(msg.body[0]);
1458         switch (opcode) {
1459         case NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1460                 netxen_handle_linkevent(sds_ring->adapter, &msg);
1461                 break;
1462         default:
1463                 break;
1464         }
1465 }
1466
1467 static int
1468 netxen_alloc_rx_skb(struct netxen_adapter *adapter,
1469                 struct nx_host_rds_ring *rds_ring,
1470                 struct netxen_rx_buffer *buffer)
1471 {
1472         struct sk_buff *skb;
1473         dma_addr_t dma;
1474         struct pci_dev *pdev = adapter->pdev;
1475
1476         buffer->skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size);
1477         if (!buffer->skb)
1478                 return 1;
1479
1480         skb = buffer->skb;
1481
1482         if (!adapter->ahw.cut_through)
1483                 skb_reserve(skb, 2);
1484
1485         dma = pci_map_single(pdev, skb->data,
1486                         rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1487
1488         if (pci_dma_mapping_error(pdev, dma)) {
1489                 dev_kfree_skb_any(skb);
1490                 buffer->skb = NULL;
1491                 return 1;
1492         }
1493
1494         buffer->skb = skb;
1495         buffer->dma = dma;
1496         buffer->state = NETXEN_BUFFER_BUSY;
1497
1498         return 0;
1499 }
1500
1501 static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
1502                 struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
1503 {
1504         struct netxen_rx_buffer *buffer;
1505         struct sk_buff *skb;
1506
1507         buffer = &rds_ring->rx_buf_arr[index];
1508
1509         pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
1510                         PCI_DMA_FROMDEVICE);
1511
1512         skb = buffer->skb;
1513         if (!skb)
1514                 goto no_skb;
1515
1516         if (likely((adapter->netdev->features & NETIF_F_RXCSUM)
1517             && cksum == STATUS_CKSUM_OK)) {
1518                 adapter->stats.csummed++;
1519                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1520         } else
1521                 skb->ip_summed = CHECKSUM_NONE;
1522
1523         buffer->skb = NULL;
1524 no_skb:
1525         buffer->state = NETXEN_BUFFER_FREE;
1526         return skb;
1527 }
1528
1529 static struct netxen_rx_buffer *
1530 netxen_process_rcv(struct netxen_adapter *adapter,
1531                 struct nx_host_sds_ring *sds_ring,
1532                 int ring, u64 sts_data0)
1533 {
1534         struct net_device *netdev = adapter->netdev;
1535         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1536         struct netxen_rx_buffer *buffer;
1537         struct sk_buff *skb;
1538         struct nx_host_rds_ring *rds_ring;
1539         int index, length, cksum, pkt_offset;
1540
1541         if (unlikely(ring >= adapter->max_rds_rings))
1542                 return NULL;
1543
1544         rds_ring = &recv_ctx->rds_rings[ring];
1545
1546         index = netxen_get_sts_refhandle(sts_data0);
1547         if (unlikely(index >= rds_ring->num_desc))
1548                 return NULL;
1549
1550         buffer = &rds_ring->rx_buf_arr[index];
1551
1552         length = netxen_get_sts_totallength(sts_data0);
1553         cksum  = netxen_get_sts_status(sts_data0);
1554         pkt_offset = netxen_get_sts_pkt_offset(sts_data0);
1555
1556         skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
1557         if (!skb)
1558                 return buffer;
1559
1560         if (length > rds_ring->skb_size)
1561                 skb_put(skb, rds_ring->skb_size);
1562         else
1563                 skb_put(skb, length);
1564
1565
1566         if (pkt_offset)
1567                 skb_pull(skb, pkt_offset);
1568
1569         skb->protocol = eth_type_trans(skb, netdev);
1570
1571         napi_gro_receive(&sds_ring->napi, skb);
1572
1573         adapter->stats.rx_pkts++;
1574         adapter->stats.rxbytes += length;
1575
1576         return buffer;
1577 }
1578
1579 #define TCP_HDR_SIZE            20
1580 #define TCP_TS_OPTION_SIZE      12
1581 #define TCP_TS_HDR_SIZE         (TCP_HDR_SIZE + TCP_TS_OPTION_SIZE)
1582
1583 static struct netxen_rx_buffer *
1584 netxen_process_lro(struct netxen_adapter *adapter,
1585                 struct nx_host_sds_ring *sds_ring,
1586                 int ring, u64 sts_data0, u64 sts_data1)
1587 {
1588         struct net_device *netdev = adapter->netdev;
1589         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1590         struct netxen_rx_buffer *buffer;
1591         struct sk_buff *skb;
1592         struct nx_host_rds_ring *rds_ring;
1593         struct iphdr *iph;
1594         struct tcphdr *th;
1595         bool push, timestamp;
1596         int l2_hdr_offset, l4_hdr_offset;
1597         int index;
1598         u16 lro_length, length, data_offset;
1599         u32 seq_number;
1600         u8 vhdr_len = 0;
1601
1602         if (unlikely(ring >= adapter->max_rds_rings))
1603                 return NULL;
1604
1605         rds_ring = &recv_ctx->rds_rings[ring];
1606
1607         index = netxen_get_lro_sts_refhandle(sts_data0);
1608         if (unlikely(index >= rds_ring->num_desc))
1609                 return NULL;
1610
1611         buffer = &rds_ring->rx_buf_arr[index];
1612
1613         timestamp = netxen_get_lro_sts_timestamp(sts_data0);
1614         lro_length = netxen_get_lro_sts_length(sts_data0);
1615         l2_hdr_offset = netxen_get_lro_sts_l2_hdr_offset(sts_data0);
1616         l4_hdr_offset = netxen_get_lro_sts_l4_hdr_offset(sts_data0);
1617         push = netxen_get_lro_sts_push_flag(sts_data0);
1618         seq_number = netxen_get_lro_sts_seq_number(sts_data1);
1619
1620         skb = netxen_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1621         if (!skb)
1622                 return buffer;
1623
1624         if (timestamp)
1625                 data_offset = l4_hdr_offset + TCP_TS_HDR_SIZE;
1626         else
1627                 data_offset = l4_hdr_offset + TCP_HDR_SIZE;
1628
1629         skb_put(skb, lro_length + data_offset);
1630
1631         skb_pull(skb, l2_hdr_offset);
1632         skb->protocol = eth_type_trans(skb, netdev);
1633
1634         if (skb->protocol == htons(ETH_P_8021Q))
1635                 vhdr_len = VLAN_HLEN;
1636         iph = (struct iphdr *)(skb->data + vhdr_len);
1637         th = (struct tcphdr *)((skb->data + vhdr_len) + (iph->ihl << 2));
1638
1639         length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1640         csum_replace2(&iph->check, iph->tot_len, htons(length));
1641         iph->tot_len = htons(length);
1642         th->psh = push;
1643         th->seq = htonl(seq_number);
1644
1645         length = skb->len;
1646
1647         if (adapter->flags & NETXEN_FW_MSS_CAP)
1648                 skb_shinfo(skb)->gso_size  =  netxen_get_lro_sts_mss(sts_data1);
1649
1650         netif_receive_skb(skb);
1651
1652         adapter->stats.lro_pkts++;
1653         adapter->stats.rxbytes += length;
1654
1655         return buffer;
1656 }
1657
1658 #define netxen_merge_rx_buffers(list, head) \
1659         do { list_splice_tail_init(list, head); } while (0);
1660
1661 int
1662 netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
1663 {
1664         struct netxen_adapter *adapter = sds_ring->adapter;
1665
1666         struct list_head *cur;
1667
1668         struct status_desc *desc;
1669         struct netxen_rx_buffer *rxbuf;
1670
1671         u32 consumer = sds_ring->consumer;
1672
1673         int count = 0;
1674         u64 sts_data0, sts_data1;
1675         int opcode, ring = 0, desc_cnt;
1676
1677         while (count < max) {
1678                 desc = &sds_ring->desc_head[consumer];
1679                 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1680
1681                 if (!(sts_data0 & STATUS_OWNER_HOST))
1682                         break;
1683
1684                 desc_cnt = netxen_get_sts_desc_cnt(sts_data0);
1685
1686                 opcode = netxen_get_sts_opcode(sts_data0);
1687
1688                 switch (opcode) {
1689                 case NETXEN_NIC_RXPKT_DESC:
1690                 case NETXEN_OLD_RXPKT_DESC:
1691                 case NETXEN_NIC_SYN_OFFLOAD:
1692                         ring = netxen_get_sts_type(sts_data0);
1693                         rxbuf = netxen_process_rcv(adapter, sds_ring,
1694                                         ring, sts_data0);
1695                         break;
1696                 case NETXEN_NIC_LRO_DESC:
1697                         ring = netxen_get_lro_sts_type(sts_data0);
1698                         sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1699                         rxbuf = netxen_process_lro(adapter, sds_ring,
1700                                         ring, sts_data0, sts_data1);
1701                         break;
1702                 case NETXEN_NIC_RESPONSE_DESC:
1703                         netxen_handle_fw_message(desc_cnt, consumer, sds_ring);
1704                 default:
1705                         goto skip;
1706                 }
1707
1708                 WARN_ON(desc_cnt > 1);
1709
1710                 if (rxbuf)
1711                         list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1712
1713 skip:
1714                 for (; desc_cnt > 0; desc_cnt--) {
1715                         desc = &sds_ring->desc_head[consumer];
1716                         desc->status_desc_data[0] =
1717                                 cpu_to_le64(STATUS_OWNER_PHANTOM);
1718                         consumer = get_next_index(consumer, sds_ring->num_desc);
1719                 }
1720                 count++;
1721         }
1722
1723         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1724                 struct nx_host_rds_ring *rds_ring =
1725                         &adapter->recv_ctx.rds_rings[ring];
1726
1727                 if (!list_empty(&sds_ring->free_list[ring])) {
1728                         list_for_each(cur, &sds_ring->free_list[ring]) {
1729                                 rxbuf = list_entry(cur,
1730                                                 struct netxen_rx_buffer, list);
1731                                 netxen_alloc_rx_skb(adapter, rds_ring, rxbuf);
1732                         }
1733                         spin_lock(&rds_ring->lock);
1734                         netxen_merge_rx_buffers(&sds_ring->free_list[ring],
1735                                                 &rds_ring->free_list);
1736                         spin_unlock(&rds_ring->lock);
1737                 }
1738
1739                 netxen_post_rx_buffers_nodb(adapter, rds_ring);
1740         }
1741
1742         if (count) {
1743                 sds_ring->consumer = consumer;
1744                 NXWRIO(adapter, sds_ring->crb_sts_consumer, consumer);
1745         }
1746
1747         return count;
1748 }
1749
1750 /* Process Command status ring */
1751 int netxen_process_cmd_ring(struct netxen_adapter *adapter)
1752 {
1753         u32 sw_consumer, hw_consumer;
1754         int count = 0, i;
1755         struct netxen_cmd_buffer *buffer;
1756         struct pci_dev *pdev = adapter->pdev;
1757         struct net_device *netdev = adapter->netdev;
1758         struct netxen_skb_frag *frag;
1759         int done = 0;
1760         struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1761
1762         if (!spin_trylock_bh(&adapter->tx_clean_lock))
1763                 return 1;
1764
1765         sw_consumer = tx_ring->sw_consumer;
1766         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1767
1768         while (sw_consumer != hw_consumer) {
1769                 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1770                 if (buffer->skb) {
1771                         frag = &buffer->frag_array[0];
1772                         pci_unmap_single(pdev, frag->dma, frag->length,
1773                                          PCI_DMA_TODEVICE);
1774                         frag->dma = 0ULL;
1775                         for (i = 1; i < buffer->frag_count; i++) {
1776                                 frag++; /* Get the next frag */
1777                                 pci_unmap_page(pdev, frag->dma, frag->length,
1778                                                PCI_DMA_TODEVICE);
1779                                 frag->dma = 0ULL;
1780                         }
1781
1782                         adapter->stats.xmitfinished++;
1783                         dev_kfree_skb_any(buffer->skb);
1784                         buffer->skb = NULL;
1785                 }
1786
1787                 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1788                 if (++count >= MAX_STATUS_HANDLE)
1789                         break;
1790         }
1791
1792         tx_ring->sw_consumer = sw_consumer;
1793
1794         if (count && netif_running(netdev)) {
1795                 smp_mb();
1796
1797                 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev))
1798                         if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
1799                                 netif_wake_queue(netdev);
1800                 adapter->tx_timeo_cnt = 0;
1801         }
1802         /*
1803          * If everything is freed up to consumer then check if the ring is full
1804          * If the ring is full then check if more needs to be freed and
1805          * schedule the call back again.
1806          *
1807          * This happens when there are 2 CPUs. One could be freeing and the
1808          * other filling it. If the ring is full when we get out of here and
1809          * the card has already interrupted the host then the host can miss the
1810          * interrupt.
1811          *
1812          * There is still a possible race condition and the host could miss an
1813          * interrupt. The card has to take care of this.
1814          */
1815         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1816         done = (sw_consumer == hw_consumer);
1817         spin_unlock_bh(&adapter->tx_clean_lock);
1818
1819         return done;
1820 }
1821
1822 void
1823 netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
1824         struct nx_host_rds_ring *rds_ring)
1825 {
1826         struct rcv_desc *pdesc;
1827         struct netxen_rx_buffer *buffer;
1828         int producer, count = 0;
1829         netxen_ctx_msg msg = 0;
1830         struct list_head *head;
1831
1832         producer = rds_ring->producer;
1833
1834         head = &rds_ring->free_list;
1835         while (!list_empty(head)) {
1836
1837                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1838
1839                 if (!buffer->skb) {
1840                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1841                                 break;
1842                 }
1843
1844                 count++;
1845                 list_del(&buffer->list);
1846
1847                 /* make a rcv descriptor  */
1848                 pdesc = &rds_ring->desc_head[producer];
1849                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1850                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1851                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1852
1853                 producer = get_next_index(producer, rds_ring->num_desc);
1854         }
1855
1856         if (count) {
1857                 rds_ring->producer = producer;
1858                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1859                                 (producer-1) & (rds_ring->num_desc-1));
1860
1861                 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1862                         /*
1863                          * Write a doorbell msg to tell phanmon of change in
1864                          * receive ring producer
1865                          * Only for firmware version < 4.0.0
1866                          */
1867                         netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
1868                         netxen_set_msg_privid(msg);
1869                         netxen_set_msg_count(msg,
1870                                              ((producer - 1) &
1871                                               (rds_ring->num_desc - 1)));
1872                         netxen_set_msg_ctxid(msg, adapter->portnum);
1873                         netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
1874                         NXWRIO(adapter, DB_NORMALIZE(adapter,
1875                                         NETXEN_RCV_PRODUCER_OFFSET), msg);
1876                 }
1877         }
1878 }
1879
1880 static void
1881 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
1882                 struct nx_host_rds_ring *rds_ring)
1883 {
1884         struct rcv_desc *pdesc;
1885         struct netxen_rx_buffer *buffer;
1886         int producer, count = 0;
1887         struct list_head *head;
1888
1889         if (!spin_trylock(&rds_ring->lock))
1890                 return;
1891
1892         producer = rds_ring->producer;
1893
1894         head = &rds_ring->free_list;
1895         while (!list_empty(head)) {
1896
1897                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1898
1899                 if (!buffer->skb) {
1900                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1901                                 break;
1902                 }
1903
1904                 count++;
1905                 list_del(&buffer->list);
1906
1907                 /* make a rcv descriptor  */
1908                 pdesc = &rds_ring->desc_head[producer];
1909                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1910                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1911                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1912
1913                 producer = get_next_index(producer, rds_ring->num_desc);
1914         }
1915
1916         if (count) {
1917                 rds_ring->producer = producer;
1918                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1919                                 (producer - 1) & (rds_ring->num_desc - 1));
1920         }
1921         spin_unlock(&rds_ring->lock);
1922 }
1923
1924 void netxen_nic_clear_stats(struct netxen_adapter *adapter)
1925 {
1926         memset(&adapter->stats, 0, sizeof(adapter->stats));
1927 }
1928