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         if (netxen_rom_fast_read(adapter, NX_BIOS_VERSION_OFFSET, (int *)&bios))
1129                 return -EIO;
1130         if ((__force u32)val != bios) {
1131                 dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
1132                                 fw_name[fw_type]);
1133                 return -EINVAL;
1134         }
1135
1136         if (netxen_rom_fast_read(adapter,
1137                         NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
1138                 dev_err(&pdev->dev, "Unable to read flash fw version\n");
1139                 return -EIO;
1140         }
1141         flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
1142
1143         /* New fw from file is not allowed, if fw on flash is < 4.0.554 */
1144         crbinit_fix_fw = NETXEN_VERSION_CODE(4, 0, 554);
1145         if (file_fw_ver >= crbinit_fix_fw && flash_fw_ver < crbinit_fix_fw &&
1146             NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1147                 dev_err(&pdev->dev, "Incompatibility detected between driver "
1148                         "and firmware version on flash. This configuration "
1149                         "is not recommended. Please update the firmware on "
1150                         "flash immediately\n");
1151                 return -EINVAL;
1152         }
1153
1154         /* check if flashed firmware is newer only for no-mn and P2 case*/
1155         if (!netxen_p3_has_mn(adapter) ||
1156             NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1157                 if (flash_fw_ver > file_fw_ver) {
1158                         dev_info(&pdev->dev, "%s: firmware is older than flash\n",
1159                                 fw_name[fw_type]);
1160                         return -EINVAL;
1161                 }
1162         }
1163
1164         NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
1165         return 0;
1166 }
1167
1168 static void
1169 nx_get_next_fwtype(struct netxen_adapter *adapter)
1170 {
1171         u8 fw_type;
1172
1173         switch (adapter->fw_type) {
1174         case NX_UNKNOWN_ROMIMAGE:
1175                 fw_type = NX_UNIFIED_ROMIMAGE;
1176                 break;
1177
1178         case NX_UNIFIED_ROMIMAGE:
1179                 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id))
1180                         fw_type = NX_FLASH_ROMIMAGE;
1181                 else if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1182                         fw_type = NX_P2_MN_ROMIMAGE;
1183                 else if (netxen_p3_has_mn(adapter))
1184                         fw_type = NX_P3_MN_ROMIMAGE;
1185                 else
1186                         fw_type = NX_P3_CT_ROMIMAGE;
1187                 break;
1188
1189         case NX_P3_MN_ROMIMAGE:
1190                 fw_type = NX_P3_CT_ROMIMAGE;
1191                 break;
1192
1193         case NX_P2_MN_ROMIMAGE:
1194         case NX_P3_CT_ROMIMAGE:
1195         default:
1196                 fw_type = NX_FLASH_ROMIMAGE;
1197                 break;
1198         }
1199
1200         adapter->fw_type = fw_type;
1201 }
1202
1203 static int
1204 netxen_p3_has_mn(struct netxen_adapter *adapter)
1205 {
1206         u32 capability, flashed_ver;
1207         capability = 0;
1208
1209         /* NX2031 always had MN */
1210         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1211                 return 1;
1212
1213         netxen_rom_fast_read(adapter,
1214                         NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
1215         flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
1216
1217         if (flashed_ver >= NETXEN_VERSION_CODE(4, 0, 220)) {
1218
1219                 capability = NXRD32(adapter, NX_PEG_TUNE_CAPABILITY);
1220                 if (capability & NX_PEG_TUNE_MN_PRESENT)
1221                         return 1;
1222         }
1223         return 0;
1224 }
1225
1226 void netxen_request_firmware(struct netxen_adapter *adapter)
1227 {
1228         struct pci_dev *pdev = adapter->pdev;
1229         int rc = 0;
1230
1231         adapter->fw_type = NX_UNKNOWN_ROMIMAGE;
1232
1233 next:
1234         nx_get_next_fwtype(adapter);
1235
1236         if (adapter->fw_type == NX_FLASH_ROMIMAGE) {
1237                 adapter->fw = NULL;
1238         } else {
1239                 rc = reject_firmware(&adapter->fw,
1240                                 fw_name[adapter->fw_type], &pdev->dev);
1241                 if (rc != 0)
1242                         goto next;
1243
1244                 rc = netxen_validate_firmware(adapter);
1245                 if (rc != 0) {
1246                         release_firmware(adapter->fw);
1247                         msleep(1);
1248                         goto next;
1249                 }
1250         }
1251 }
1252
1253
1254 void
1255 netxen_release_firmware(struct netxen_adapter *adapter)
1256 {
1257         release_firmware(adapter->fw);
1258         adapter->fw = NULL;
1259 }
1260
1261 int netxen_init_dummy_dma(struct netxen_adapter *adapter)
1262 {
1263         u64 addr;
1264         u32 hi, lo;
1265
1266         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1267                 return 0;
1268
1269         adapter->dummy_dma.addr = pci_alloc_consistent(adapter->pdev,
1270                                  NETXEN_HOST_DUMMY_DMA_SIZE,
1271                                  &adapter->dummy_dma.phys_addr);
1272         if (adapter->dummy_dma.addr == NULL) {
1273                 dev_err(&adapter->pdev->dev,
1274                         "ERROR: Could not allocate dummy DMA memory\n");
1275                 return -ENOMEM;
1276         }
1277
1278         addr = (uint64_t) adapter->dummy_dma.phys_addr;
1279         hi = (addr >> 32) & 0xffffffff;
1280         lo = addr & 0xffffffff;
1281
1282         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
1283         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
1284
1285         return 0;
1286 }
1287
1288 /*
1289  * NetXen DMA watchdog control:
1290  *
1291  *      Bit 0           : enabled => R/O: 1 watchdog active, 0 inactive
1292  *      Bit 1           : disable_request => 1 req disable dma watchdog
1293  *      Bit 2           : enable_request =>  1 req enable dma watchdog
1294  *      Bit 3-31        : unused
1295  */
1296 void netxen_free_dummy_dma(struct netxen_adapter *adapter)
1297 {
1298         int i = 100;
1299         u32 ctrl;
1300
1301         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1302                 return;
1303
1304         if (!adapter->dummy_dma.addr)
1305                 return;
1306
1307         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1308         if ((ctrl & 0x1) != 0) {
1309                 NXWR32(adapter, NETXEN_DMA_WATCHDOG_CTRL, (ctrl | 0x2));
1310
1311                 while ((ctrl & 0x1) != 0) {
1312
1313                         msleep(50);
1314
1315                         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1316
1317                         if (--i == 0)
1318                                 break;
1319                 }
1320         }
1321
1322         if (i) {
1323                 pci_free_consistent(adapter->pdev,
1324                             NETXEN_HOST_DUMMY_DMA_SIZE,
1325                             adapter->dummy_dma.addr,
1326                             adapter->dummy_dma.phys_addr);
1327                 adapter->dummy_dma.addr = NULL;
1328         } else
1329                 dev_err(&adapter->pdev->dev, "dma_watchdog_shutdown failed\n");
1330 }
1331
1332 int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
1333 {
1334         u32 val = 0;
1335         int retries = 60;
1336
1337         if (pegtune_val)
1338                 return 0;
1339
1340         do {
1341                 val = NXRD32(adapter, CRB_CMDPEG_STATE);
1342                 switch (val) {
1343                 case PHAN_INITIALIZE_COMPLETE:
1344                 case PHAN_INITIALIZE_ACK:
1345                         return 0;
1346                 case PHAN_INITIALIZE_FAILED:
1347                         goto out_err;
1348                 default:
1349                         break;
1350                 }
1351
1352                 msleep(500);
1353
1354         } while (--retries);
1355
1356         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
1357
1358 out_err:
1359         dev_warn(&adapter->pdev->dev, "firmware init failed\n");
1360         return -EIO;
1361 }
1362
1363 static int
1364 netxen_receive_peg_ready(struct netxen_adapter *adapter)
1365 {
1366         u32 val = 0;
1367         int retries = 2000;
1368
1369         do {
1370                 val = NXRD32(adapter, CRB_RCVPEG_STATE);
1371
1372                 if (val == PHAN_PEG_RCV_INITIALIZED)
1373                         return 0;
1374
1375                 msleep(10);
1376
1377         } while (--retries);
1378
1379         pr_err("Receive Peg initialization not complete, state: 0x%x.\n", val);
1380         return -EIO;
1381 }
1382
1383 int netxen_init_firmware(struct netxen_adapter *adapter)
1384 {
1385         int err;
1386
1387         err = netxen_receive_peg_ready(adapter);
1388         if (err)
1389                 return err;
1390
1391         NXWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
1392         NXWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
1393         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
1394
1395         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1396                 NXWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
1397
1398         return err;
1399 }
1400
1401 static void
1402 netxen_handle_linkevent(struct netxen_adapter *adapter, nx_fw_msg_t *msg)
1403 {
1404         u32 cable_OUI;
1405         u16 cable_len;
1406         u16 link_speed;
1407         u8  link_status, module, duplex, autoneg;
1408         struct net_device *netdev = adapter->netdev;
1409
1410         adapter->has_link_events = 1;
1411
1412         cable_OUI = msg->body[1] & 0xffffffff;
1413         cable_len = (msg->body[1] >> 32) & 0xffff;
1414         link_speed = (msg->body[1] >> 48) & 0xffff;
1415
1416         link_status = msg->body[2] & 0xff;
1417         duplex = (msg->body[2] >> 16) & 0xff;
1418         autoneg = (msg->body[2] >> 24) & 0xff;
1419
1420         module = (msg->body[2] >> 8) & 0xff;
1421         if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) {
1422                 printk(KERN_INFO "%s: unsupported cable: OUI 0x%x, length %d\n",
1423                                 netdev->name, cable_OUI, cable_len);
1424         } else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) {
1425                 printk(KERN_INFO "%s: unsupported cable length %d\n",
1426                                 netdev->name, cable_len);
1427         }
1428
1429         /* update link parameters */
1430         if (duplex == LINKEVENT_FULL_DUPLEX)
1431                 adapter->link_duplex = DUPLEX_FULL;
1432         else
1433                 adapter->link_duplex = DUPLEX_HALF;
1434         adapter->module_type = module;
1435         adapter->link_autoneg = autoneg;
1436         adapter->link_speed = link_speed;
1437
1438         netxen_advert_link_change(adapter, link_status);
1439 }
1440
1441 static void
1442 netxen_handle_fw_message(int desc_cnt, int index,
1443                 struct nx_host_sds_ring *sds_ring)
1444 {
1445         nx_fw_msg_t msg;
1446         struct status_desc *desc;
1447         int i = 0, opcode;
1448
1449         while (desc_cnt > 0 && i < 8) {
1450                 desc = &sds_ring->desc_head[index];
1451                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1452                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1453
1454                 index = get_next_index(index, sds_ring->num_desc);
1455                 desc_cnt--;
1456         }
1457
1458         opcode = netxen_get_nic_msg_opcode(msg.body[0]);
1459         switch (opcode) {
1460         case NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1461                 netxen_handle_linkevent(sds_ring->adapter, &msg);
1462                 break;
1463         default:
1464                 break;
1465         }
1466 }
1467
1468 static int
1469 netxen_alloc_rx_skb(struct netxen_adapter *adapter,
1470                 struct nx_host_rds_ring *rds_ring,
1471                 struct netxen_rx_buffer *buffer)
1472 {
1473         struct sk_buff *skb;
1474         dma_addr_t dma;
1475         struct pci_dev *pdev = adapter->pdev;
1476
1477         buffer->skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size);
1478         if (!buffer->skb)
1479                 return 1;
1480
1481         skb = buffer->skb;
1482
1483         if (!adapter->ahw.cut_through)
1484                 skb_reserve(skb, 2);
1485
1486         dma = pci_map_single(pdev, skb->data,
1487                         rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1488
1489         if (pci_dma_mapping_error(pdev, dma)) {
1490                 dev_kfree_skb_any(skb);
1491                 buffer->skb = NULL;
1492                 return 1;
1493         }
1494
1495         buffer->skb = skb;
1496         buffer->dma = dma;
1497         buffer->state = NETXEN_BUFFER_BUSY;
1498
1499         return 0;
1500 }
1501
1502 static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
1503                 struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
1504 {
1505         struct netxen_rx_buffer *buffer;
1506         struct sk_buff *skb;
1507
1508         buffer = &rds_ring->rx_buf_arr[index];
1509
1510         pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
1511                         PCI_DMA_FROMDEVICE);
1512
1513         skb = buffer->skb;
1514         if (!skb)
1515                 goto no_skb;
1516
1517         if (likely((adapter->netdev->features & NETIF_F_RXCSUM)
1518             && cksum == STATUS_CKSUM_OK)) {
1519                 adapter->stats.csummed++;
1520                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1521         } else
1522                 skb->ip_summed = CHECKSUM_NONE;
1523
1524         buffer->skb = NULL;
1525 no_skb:
1526         buffer->state = NETXEN_BUFFER_FREE;
1527         return skb;
1528 }
1529
1530 static struct netxen_rx_buffer *
1531 netxen_process_rcv(struct netxen_adapter *adapter,
1532                 struct nx_host_sds_ring *sds_ring,
1533                 int ring, u64 sts_data0)
1534 {
1535         struct net_device *netdev = adapter->netdev;
1536         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1537         struct netxen_rx_buffer *buffer;
1538         struct sk_buff *skb;
1539         struct nx_host_rds_ring *rds_ring;
1540         int index, length, cksum, pkt_offset;
1541
1542         if (unlikely(ring >= adapter->max_rds_rings))
1543                 return NULL;
1544
1545         rds_ring = &recv_ctx->rds_rings[ring];
1546
1547         index = netxen_get_sts_refhandle(sts_data0);
1548         if (unlikely(index >= rds_ring->num_desc))
1549                 return NULL;
1550
1551         buffer = &rds_ring->rx_buf_arr[index];
1552
1553         length = netxen_get_sts_totallength(sts_data0);
1554         cksum  = netxen_get_sts_status(sts_data0);
1555         pkt_offset = netxen_get_sts_pkt_offset(sts_data0);
1556
1557         skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
1558         if (!skb)
1559                 return buffer;
1560
1561         if (length > rds_ring->skb_size)
1562                 skb_put(skb, rds_ring->skb_size);
1563         else
1564                 skb_put(skb, length);
1565
1566
1567         if (pkt_offset)
1568                 skb_pull(skb, pkt_offset);
1569
1570         skb->protocol = eth_type_trans(skb, netdev);
1571
1572         napi_gro_receive(&sds_ring->napi, skb);
1573
1574         adapter->stats.rx_pkts++;
1575         adapter->stats.rxbytes += length;
1576
1577         return buffer;
1578 }
1579
1580 #define TCP_HDR_SIZE            20
1581 #define TCP_TS_OPTION_SIZE      12
1582 #define TCP_TS_HDR_SIZE         (TCP_HDR_SIZE + TCP_TS_OPTION_SIZE)
1583
1584 static struct netxen_rx_buffer *
1585 netxen_process_lro(struct netxen_adapter *adapter,
1586                 struct nx_host_sds_ring *sds_ring,
1587                 int ring, u64 sts_data0, u64 sts_data1)
1588 {
1589         struct net_device *netdev = adapter->netdev;
1590         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1591         struct netxen_rx_buffer *buffer;
1592         struct sk_buff *skb;
1593         struct nx_host_rds_ring *rds_ring;
1594         struct iphdr *iph;
1595         struct tcphdr *th;
1596         bool push, timestamp;
1597         int l2_hdr_offset, l4_hdr_offset;
1598         int index;
1599         u16 lro_length, length, data_offset;
1600         u32 seq_number;
1601         u8 vhdr_len = 0;
1602
1603         if (unlikely(ring >= adapter->max_rds_rings))
1604                 return NULL;
1605
1606         rds_ring = &recv_ctx->rds_rings[ring];
1607
1608         index = netxen_get_lro_sts_refhandle(sts_data0);
1609         if (unlikely(index >= rds_ring->num_desc))
1610                 return NULL;
1611
1612         buffer = &rds_ring->rx_buf_arr[index];
1613
1614         timestamp = netxen_get_lro_sts_timestamp(sts_data0);
1615         lro_length = netxen_get_lro_sts_length(sts_data0);
1616         l2_hdr_offset = netxen_get_lro_sts_l2_hdr_offset(sts_data0);
1617         l4_hdr_offset = netxen_get_lro_sts_l4_hdr_offset(sts_data0);
1618         push = netxen_get_lro_sts_push_flag(sts_data0);
1619         seq_number = netxen_get_lro_sts_seq_number(sts_data1);
1620
1621         skb = netxen_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1622         if (!skb)
1623                 return buffer;
1624
1625         if (timestamp)
1626                 data_offset = l4_hdr_offset + TCP_TS_HDR_SIZE;
1627         else
1628                 data_offset = l4_hdr_offset + TCP_HDR_SIZE;
1629
1630         skb_put(skb, lro_length + data_offset);
1631
1632         skb_pull(skb, l2_hdr_offset);
1633         skb->protocol = eth_type_trans(skb, netdev);
1634
1635         if (skb->protocol == htons(ETH_P_8021Q))
1636                 vhdr_len = VLAN_HLEN;
1637         iph = (struct iphdr *)(skb->data + vhdr_len);
1638         th = (struct tcphdr *)((skb->data + vhdr_len) + (iph->ihl << 2));
1639
1640         length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1641         csum_replace2(&iph->check, iph->tot_len, htons(length));
1642         iph->tot_len = htons(length);
1643         th->psh = push;
1644         th->seq = htonl(seq_number);
1645
1646         length = skb->len;
1647
1648         if (adapter->flags & NETXEN_FW_MSS_CAP)
1649                 skb_shinfo(skb)->gso_size  =  netxen_get_lro_sts_mss(sts_data1);
1650
1651         netif_receive_skb(skb);
1652
1653         adapter->stats.lro_pkts++;
1654         adapter->stats.rxbytes += length;
1655
1656         return buffer;
1657 }
1658
1659 #define netxen_merge_rx_buffers(list, head) \
1660         do { list_splice_tail_init(list, head); } while (0);
1661
1662 int
1663 netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
1664 {
1665         struct netxen_adapter *adapter = sds_ring->adapter;
1666
1667         struct list_head *cur;
1668
1669         struct status_desc *desc;
1670         struct netxen_rx_buffer *rxbuf;
1671
1672         u32 consumer = sds_ring->consumer;
1673
1674         int count = 0;
1675         u64 sts_data0, sts_data1;
1676         int opcode, ring = 0, desc_cnt;
1677
1678         while (count < max) {
1679                 desc = &sds_ring->desc_head[consumer];
1680                 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1681
1682                 if (!(sts_data0 & STATUS_OWNER_HOST))
1683                         break;
1684
1685                 desc_cnt = netxen_get_sts_desc_cnt(sts_data0);
1686
1687                 opcode = netxen_get_sts_opcode(sts_data0);
1688
1689                 switch (opcode) {
1690                 case NETXEN_NIC_RXPKT_DESC:
1691                 case NETXEN_OLD_RXPKT_DESC:
1692                 case NETXEN_NIC_SYN_OFFLOAD:
1693                         ring = netxen_get_sts_type(sts_data0);
1694                         rxbuf = netxen_process_rcv(adapter, sds_ring,
1695                                         ring, sts_data0);
1696                         break;
1697                 case NETXEN_NIC_LRO_DESC:
1698                         ring = netxen_get_lro_sts_type(sts_data0);
1699                         sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1700                         rxbuf = netxen_process_lro(adapter, sds_ring,
1701                                         ring, sts_data0, sts_data1);
1702                         break;
1703                 case NETXEN_NIC_RESPONSE_DESC:
1704                         netxen_handle_fw_message(desc_cnt, consumer, sds_ring);
1705                 default:
1706                         goto skip;
1707                 }
1708
1709                 WARN_ON(desc_cnt > 1);
1710
1711                 if (rxbuf)
1712                         list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1713
1714 skip:
1715                 for (; desc_cnt > 0; desc_cnt--) {
1716                         desc = &sds_ring->desc_head[consumer];
1717                         desc->status_desc_data[0] =
1718                                 cpu_to_le64(STATUS_OWNER_PHANTOM);
1719                         consumer = get_next_index(consumer, sds_ring->num_desc);
1720                 }
1721                 count++;
1722         }
1723
1724         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1725                 struct nx_host_rds_ring *rds_ring =
1726                         &adapter->recv_ctx.rds_rings[ring];
1727
1728                 if (!list_empty(&sds_ring->free_list[ring])) {
1729                         list_for_each(cur, &sds_ring->free_list[ring]) {
1730                                 rxbuf = list_entry(cur,
1731                                                 struct netxen_rx_buffer, list);
1732                                 netxen_alloc_rx_skb(adapter, rds_ring, rxbuf);
1733                         }
1734                         spin_lock(&rds_ring->lock);
1735                         netxen_merge_rx_buffers(&sds_ring->free_list[ring],
1736                                                 &rds_ring->free_list);
1737                         spin_unlock(&rds_ring->lock);
1738                 }
1739
1740                 netxen_post_rx_buffers_nodb(adapter, rds_ring);
1741         }
1742
1743         if (count) {
1744                 sds_ring->consumer = consumer;
1745                 NXWRIO(adapter, sds_ring->crb_sts_consumer, consumer);
1746         }
1747
1748         return count;
1749 }
1750
1751 /* Process Command status ring */
1752 int netxen_process_cmd_ring(struct netxen_adapter *adapter)
1753 {
1754         u32 sw_consumer, hw_consumer;
1755         int count = 0, i;
1756         struct netxen_cmd_buffer *buffer;
1757         struct pci_dev *pdev = adapter->pdev;
1758         struct net_device *netdev = adapter->netdev;
1759         struct netxen_skb_frag *frag;
1760         int done = 0;
1761         struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1762
1763         if (!spin_trylock_bh(&adapter->tx_clean_lock))
1764                 return 1;
1765
1766         sw_consumer = tx_ring->sw_consumer;
1767         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1768
1769         while (sw_consumer != hw_consumer) {
1770                 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1771                 if (buffer->skb) {
1772                         frag = &buffer->frag_array[0];
1773                         pci_unmap_single(pdev, frag->dma, frag->length,
1774                                          PCI_DMA_TODEVICE);
1775                         frag->dma = 0ULL;
1776                         for (i = 1; i < buffer->frag_count; i++) {
1777                                 frag++; /* Get the next frag */
1778                                 pci_unmap_page(pdev, frag->dma, frag->length,
1779                                                PCI_DMA_TODEVICE);
1780                                 frag->dma = 0ULL;
1781                         }
1782
1783                         adapter->stats.xmitfinished++;
1784                         dev_kfree_skb_any(buffer->skb);
1785                         buffer->skb = NULL;
1786                 }
1787
1788                 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1789                 if (++count >= MAX_STATUS_HANDLE)
1790                         break;
1791         }
1792
1793         tx_ring->sw_consumer = sw_consumer;
1794
1795         if (count && netif_running(netdev)) {
1796                 smp_mb();
1797
1798                 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev))
1799                         if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
1800                                 netif_wake_queue(netdev);
1801                 adapter->tx_timeo_cnt = 0;
1802         }
1803         /*
1804          * If everything is freed up to consumer then check if the ring is full
1805          * If the ring is full then check if more needs to be freed and
1806          * schedule the call back again.
1807          *
1808          * This happens when there are 2 CPUs. One could be freeing and the
1809          * other filling it. If the ring is full when we get out of here and
1810          * the card has already interrupted the host then the host can miss the
1811          * interrupt.
1812          *
1813          * There is still a possible race condition and the host could miss an
1814          * interrupt. The card has to take care of this.
1815          */
1816         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1817         done = (sw_consumer == hw_consumer);
1818         spin_unlock_bh(&adapter->tx_clean_lock);
1819
1820         return done;
1821 }
1822
1823 void
1824 netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
1825         struct nx_host_rds_ring *rds_ring)
1826 {
1827         struct rcv_desc *pdesc;
1828         struct netxen_rx_buffer *buffer;
1829         int producer, count = 0;
1830         netxen_ctx_msg msg = 0;
1831         struct list_head *head;
1832
1833         producer = rds_ring->producer;
1834
1835         head = &rds_ring->free_list;
1836         while (!list_empty(head)) {
1837
1838                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1839
1840                 if (!buffer->skb) {
1841                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1842                                 break;
1843                 }
1844
1845                 count++;
1846                 list_del(&buffer->list);
1847
1848                 /* make a rcv descriptor  */
1849                 pdesc = &rds_ring->desc_head[producer];
1850                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1851                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1852                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1853
1854                 producer = get_next_index(producer, rds_ring->num_desc);
1855         }
1856
1857         if (count) {
1858                 rds_ring->producer = producer;
1859                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1860                                 (producer-1) & (rds_ring->num_desc-1));
1861
1862                 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1863                         /*
1864                          * Write a doorbell msg to tell phanmon of change in
1865                          * receive ring producer
1866                          * Only for firmware version < 4.0.0
1867                          */
1868                         netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
1869                         netxen_set_msg_privid(msg);
1870                         netxen_set_msg_count(msg,
1871                                              ((producer - 1) &
1872                                               (rds_ring->num_desc - 1)));
1873                         netxen_set_msg_ctxid(msg, adapter->portnum);
1874                         netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
1875                         NXWRIO(adapter, DB_NORMALIZE(adapter,
1876                                         NETXEN_RCV_PRODUCER_OFFSET), msg);
1877                 }
1878         }
1879 }
1880
1881 static void
1882 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
1883                 struct nx_host_rds_ring *rds_ring)
1884 {
1885         struct rcv_desc *pdesc;
1886         struct netxen_rx_buffer *buffer;
1887         int producer, count = 0;
1888         struct list_head *head;
1889
1890         if (!spin_trylock(&rds_ring->lock))
1891                 return;
1892
1893         producer = rds_ring->producer;
1894
1895         head = &rds_ring->free_list;
1896         while (!list_empty(head)) {
1897
1898                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1899
1900                 if (!buffer->skb) {
1901                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1902                                 break;
1903                 }
1904
1905                 count++;
1906                 list_del(&buffer->list);
1907
1908                 /* make a rcv descriptor  */
1909                 pdesc = &rds_ring->desc_head[producer];
1910                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1911                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1912                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1913
1914                 producer = get_next_index(producer, rds_ring->num_desc);
1915         }
1916
1917         if (count) {
1918                 rds_ring->producer = producer;
1919                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1920                                 (producer - 1) & (rds_ring->num_desc - 1));
1921         }
1922         spin_unlock(&rds_ring->lock);
1923 }
1924
1925 void netxen_nic_clear_stats(struct netxen_adapter *adapter)
1926 {
1927         memset(&adapter->stats, 0, sizeof(adapter->stats));
1928 }
1929