drivers/net/ethernet/qlogic/netxen/netxen_nic_init.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright (C) 2003 - 2009 NetXen, Inc.
   4  * Copyright (C) 2009 - QLogic Corporation.
   5  * All rights reserved.
   6  */
   7
   8 #include <linux/netdevice.h>
   9 #include <linux/delay.h>
  10 #include <linux/slab.h>
  11 #include <linux/if_vlan.h>
  12 #include <net/checksum.h>
  13 #include "netxen_nic.h"
  14 #include "netxen_nic_hw.h"
  15
  16 struct crb_addr_pair {
  17         u32 addr;
  18         u32 data;
  19 };
  20
  21 #define NETXEN_MAX_CRB_XFORM 60
  22 static unsigned int crb_addr_xform[NETXEN_MAX_CRB_XFORM];
  23 #define NETXEN_ADDR_ERROR (0xffffffff)
  24
  25 #define crb_addr_transform(name) \
  26         crb_addr_xform[NETXEN_HW_PX_MAP_CRB_##name] = \
  27         NETXEN_HW_CRB_HUB_AGT_ADR_##name << 20
  28
  29 #define NETXEN_NIC_XDMA_RESET 0x8000ff
  30
  31 static void
  32 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
  33                 struct nx_host_rds_ring *rds_ring);
  34 static int netxen_p3_has_mn(struct netxen_adapter *adapter);
  35
  36 static void crb_addr_transform_setup(void)
  37 {
  38         crb_addr_transform(XDMA);
  39         crb_addr_transform(TIMR);
  40         crb_addr_transform(SRE);
  41         crb_addr_transform(SQN3);
  42         crb_addr_transform(SQN2);
  43         crb_addr_transform(SQN1);
  44         crb_addr_transform(SQN0);
  45         crb_addr_transform(SQS3);
  46         crb_addr_transform(SQS2);
  47         crb_addr_transform(SQS1);
  48         crb_addr_transform(SQS0);
  49         crb_addr_transform(RPMX7);
  50         crb_addr_transform(RPMX6);
  51         crb_addr_transform(RPMX5);
  52         crb_addr_transform(RPMX4);
  53         crb_addr_transform(RPMX3);
  54         crb_addr_transform(RPMX2);
  55         crb_addr_transform(RPMX1);
  56         crb_addr_transform(RPMX0);
  57         crb_addr_transform(ROMUSB);
  58         crb_addr_transform(SN);
  59         crb_addr_transform(QMN);
  60         crb_addr_transform(QMS);
  61         crb_addr_transform(PGNI);
  62         crb_addr_transform(PGND);
  63         crb_addr_transform(PGN3);
  64         crb_addr_transform(PGN2);
  65         crb_addr_transform(PGN1);
  66         crb_addr_transform(PGN0);
  67         crb_addr_transform(PGSI);
  68         crb_addr_transform(PGSD);
  69         crb_addr_transform(PGS3);
  70         crb_addr_transform(PGS2);
  71         crb_addr_transform(PGS1);
  72         crb_addr_transform(PGS0);
  73         crb_addr_transform(PS);
  74         crb_addr_transform(PH);
  75         crb_addr_transform(NIU);
  76         crb_addr_transform(I2Q);
  77         crb_addr_transform(EG);
  78         crb_addr_transform(MN);
  79         crb_addr_transform(MS);
  80         crb_addr_transform(CAS2);
  81         crb_addr_transform(CAS1);
  82         crb_addr_transform(CAS0);
  83         crb_addr_transform(CAM);
  84         crb_addr_transform(C2C1);
  85         crb_addr_transform(C2C0);
  86         crb_addr_transform(SMB);
  87         crb_addr_transform(OCM0);
  88         crb_addr_transform(I2C0);
  89 }
  90
  91 void netxen_release_rx_buffers(struct netxen_adapter *adapter)
  92 {
  93         struct netxen_recv_context *recv_ctx;
  94         struct nx_host_rds_ring *rds_ring;
  95         struct netxen_rx_buffer *rx_buf;
  96         int i, ring;
  97
  98         recv_ctx = &adapter->recv_ctx;
  99         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 100                 rds_ring = &recv_ctx->rds_rings[ring];
 101                 for (i = 0; i < rds_ring->num_desc; ++i) {
 102                         rx_buf = &(rds_ring->rx_buf_arr[i]);
 103                         if (rx_buf->state == NETXEN_BUFFER_FREE)
 104                                 continue;
 105                         dma_unmap_single(&adapter->pdev->dev, rx_buf->dma,
 106                                          rds_ring->dma_size, DMA_FROM_DEVICE);
 107                         if (rx_buf->skb != NULL)
 108                                 dev_kfree_skb_any(rx_buf->skb);
 109                 }
 110         }
 111 }
 112
 113 void netxen_release_tx_buffers(struct netxen_adapter *adapter)
 114 {
 115         struct netxen_cmd_buffer *cmd_buf;
 116         struct netxen_skb_frag *buffrag;
 117         int i, j;
 118         struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
 119
 120         spin_lock_bh(&adapter->tx_clean_lock);
 121         cmd_buf = tx_ring->cmd_buf_arr;
 122         for (i = 0; i < tx_ring->num_desc; i++) {
 123                 buffrag = cmd_buf->frag_array;
 124                 if (buffrag->dma) {
 125                         dma_unmap_single(&adapter->pdev->dev, buffrag->dma,
 126                                          buffrag->length, DMA_TO_DEVICE);
 127                         buffrag->dma = 0ULL;
 128                 }
 129                 for (j = 1; j < cmd_buf->frag_count; j++) {
 130                         buffrag++;
 131                         if (buffrag->dma) {
 132                                 dma_unmap_page(&adapter->pdev->dev,
 133                                                buffrag->dma, buffrag->length,
 134                                                DMA_TO_DEVICE);
 135                                 buffrag->dma = 0ULL;
 136                         }
 137                 }
 138                 if (cmd_buf->skb) {
 139                         dev_kfree_skb_any(cmd_buf->skb);
 140                         cmd_buf->skb = NULL;
 141                 }
 142                 cmd_buf++;
 143         }
 144         spin_unlock_bh(&adapter->tx_clean_lock);
 145 }
 146
 147 void netxen_free_sw_resources(struct netxen_adapter *adapter)
 148 {
 149         struct netxen_recv_context *recv_ctx;
 150         struct nx_host_rds_ring *rds_ring;
 151         struct nx_host_tx_ring *tx_ring;
 152         int ring;
 153
 154         recv_ctx = &adapter->recv_ctx;
 155
 156         if (recv_ctx->rds_rings == NULL)
 157                 goto skip_rds;
 158
 159         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 160                 rds_ring = &recv_ctx->rds_rings[ring];
 161                 vfree(rds_ring->rx_buf_arr);
 162                 rds_ring->rx_buf_arr = NULL;
 163         }
 164         kfree(recv_ctx->rds_rings);
 165
 166 skip_rds:
 167         if (adapter->tx_ring == NULL)
 168                 return;
 169
 170         tx_ring = adapter->tx_ring;
 171         vfree(tx_ring->cmd_buf_arr);
 172         kfree(tx_ring);
 173         adapter->tx_ring = NULL;
 174 }
 175
 176 int netxen_alloc_sw_resources(struct netxen_adapter *adapter)
 177 {
 178         struct netxen_recv_context *recv_ctx;
 179         struct nx_host_rds_ring *rds_ring;
 180         struct nx_host_sds_ring *sds_ring;
 181         struct nx_host_tx_ring *tx_ring;
 182         struct netxen_rx_buffer *rx_buf;
 183         int ring, i;
 184
 185         struct netxen_cmd_buffer *cmd_buf_arr;
 186         struct net_device *netdev = adapter->netdev;
 187
 188         tx_ring = kzalloc(sizeof(struct nx_host_tx_ring), GFP_KERNEL);
 189         if (tx_ring == NULL)
 190                 return -ENOMEM;
 191
 192         adapter->tx_ring = tx_ring;
 193
 194         tx_ring->num_desc = adapter->num_txd;
 195         tx_ring->txq = netdev_get_tx_queue(netdev, 0);
 196
 197         cmd_buf_arr = vzalloc(TX_BUFF_RINGSIZE(tx_ring));
 198         if (cmd_buf_arr == NULL)
 199                 goto err_out;
 200
 201         tx_ring->cmd_buf_arr = cmd_buf_arr;
 202
 203         recv_ctx = &adapter->recv_ctx;
 204
 205         rds_ring = kcalloc(adapter->max_rds_rings,
 206                            sizeof(struct nx_host_rds_ring), GFP_KERNEL);
 207         if (rds_ring == NULL)
 208                 goto err_out;
 209
 210         recv_ctx->rds_rings = rds_ring;
 211
 212         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 213                 rds_ring = &recv_ctx->rds_rings[ring];
 214                 switch (ring) {
 215                 case RCV_RING_NORMAL:
 216                         rds_ring->num_desc = adapter->num_rxd;
 217                         if (adapter->ahw.cut_through) {
 218                                 rds_ring->dma_size =
 219                                         NX_CT_DEFAULT_RX_BUF_LEN;
 220                                 rds_ring->skb_size =
 221                                         NX_CT_DEFAULT_RX_BUF_LEN;
 222                         } else {
 223                                 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 224                                         rds_ring->dma_size =
 225                                                 NX_P3_RX_BUF_MAX_LEN;
 226                                 else
 227                                         rds_ring->dma_size =
 228                                                 NX_P2_RX_BUF_MAX_LEN;
 229                                 rds_ring->skb_size =
 230                                         rds_ring->dma_size + NET_IP_ALIGN;
 231                         }
 232                         break;
 233
 234                 case RCV_RING_JUMBO:
 235                         rds_ring->num_desc = adapter->num_jumbo_rxd;
 236                         if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 237                                 rds_ring->dma_size =
 238                                         NX_P3_RX_JUMBO_BUF_MAX_LEN;
 239                         else
 240                                 rds_ring->dma_size =
 241                                         NX_P2_RX_JUMBO_BUF_MAX_LEN;
 242
 243                         if (adapter->capabilities & NX_CAP0_HW_LRO)
 244                                 rds_ring->dma_size += NX_LRO_BUFFER_EXTRA;
 245
 246                         rds_ring->skb_size =
 247                                 rds_ring->dma_size + NET_IP_ALIGN;
 248                         break;
 249
 250                 case RCV_RING_LRO:
 251                         rds_ring->num_desc = adapter->num_lro_rxd;
 252                         rds_ring->dma_size = NX_RX_LRO_BUFFER_LENGTH;
 253                         rds_ring->skb_size = rds_ring->dma_size + NET_IP_ALIGN;
 254                         break;
 255
 256                 }
 257                 rds_ring->rx_buf_arr = vzalloc(RCV_BUFF_RINGSIZE(rds_ring));
 258                 if (rds_ring->rx_buf_arr == NULL)
 259                         /* free whatever was already allocated */
 260                         goto err_out;
 261
 262                 INIT_LIST_HEAD(&rds_ring->free_list);
 263                 /*
 264                  * Now go through all of them, set reference handles
 265                  * and put them in the queues.
 266                  */
 267                 rx_buf = rds_ring->rx_buf_arr;
 268                 for (i = 0; i < rds_ring->num_desc; i++) {
 269                         list_add_tail(&rx_buf->list,
 270                                         &rds_ring->free_list);
 271                         rx_buf->ref_handle = i;
 272                         rx_buf->state = NETXEN_BUFFER_FREE;
 273                         rx_buf++;
 274                 }
 275                 spin_lock_init(&rds_ring->lock);
 276         }
 277
 278         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 279                 sds_ring = &recv_ctx->sds_rings[ring];
 280                 sds_ring->irq = adapter->msix_entries[ring].vector;
 281                 sds_ring->adapter = adapter;
 282                 sds_ring->num_desc = adapter->num_rxd;
 283
 284                 for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
 285                         INIT_LIST_HEAD(&sds_ring->free_list[i]);
 286         }
 287
 288         return 0;
 289
 290 err_out:
 291         netxen_free_sw_resources(adapter);
 292         return -ENOMEM;
 293 }
 294
 295 /*
 296  * netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
 297  * address to external PCI CRB address.
 298  */
 299 static u32 netxen_decode_crb_addr(u32 addr)
 300 {
 301         int i;
 302         u32 base_addr, offset, pci_base;
 303
 304         crb_addr_transform_setup();
 305
 306         pci_base = NETXEN_ADDR_ERROR;
 307         base_addr = addr & 0xfff00000;
 308         offset = addr & 0x000fffff;
 309
 310         for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
 311                 if (crb_addr_xform[i] == base_addr) {
 312                         pci_base = i << 20;
 313                         break;
 314                 }
 315         }
 316         if (pci_base == NETXEN_ADDR_ERROR)
 317                 return pci_base;
 318         else
 319                 return pci_base + offset;
 320 }
 321
 322 #define NETXEN_MAX_ROM_WAIT_USEC        100
 323
 324 static int netxen_wait_rom_done(struct netxen_adapter *adapter)
 325 {
 326         long timeout = 0;
 327         long done = 0;
 328
 329         cond_resched();
 330
 331         while (done == 0) {
 332                 done = NXRD32(adapter, NETXEN_ROMUSB_GLB_STATUS);
 333                 done &= 2;
 334                 if (++timeout >= NETXEN_MAX_ROM_WAIT_USEC) {
 335                         dev_err(&adapter->pdev->dev,
 336                                 "Timeout reached  waiting for rom done");
 337                         return -EIO;
 338                 }
 339                 udelay(1);
 340         }
 341         return 0;
 342 }
 343
 344 static int do_rom_fast_read(struct netxen_adapter *adapter,
 345                             int addr, int *valp)
 346 {
 347         NXWR32(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
 348         NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 349         NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
 350         NXWR32(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
 351         if (netxen_wait_rom_done(adapter)) {
 352                 printk("Error waiting for rom done\n");
 353                 return -EIO;
 354         }
 355         /* reset abyte_cnt and dummy_byte_cnt */
 356         NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
 357         udelay(10);
 358         NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 359
 360         *valp = NXRD32(adapter, NETXEN_ROMUSB_ROM_RDATA);
 361         return 0;
 362 }
 363
 364 static int do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 365                                   u8 *bytes, size_t size)
 366 {
 367         int addridx;
 368         int ret = 0;
 369
 370         for (addridx = addr; addridx < (addr + size); addridx += 4) {
 371                 int v;
 372                 ret = do_rom_fast_read(adapter, addridx, &v);
 373                 if (ret != 0)
 374                         break;
 375                 *(__le32 *)bytes = cpu_to_le32(v);
 376                 bytes += 4;
 377         }
 378
 379         return ret;
 380 }
 381
 382 int
 383 netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 384                                 u8 *bytes, size_t size)
 385 {
 386         int ret;
 387
 388         ret = netxen_rom_lock(adapter);
 389         if (ret < 0)
 390                 return ret;
 391
 392         ret = do_rom_fast_read_words(adapter, addr, bytes, size);
 393
 394         netxen_rom_unlock(adapter);
 395         return ret;
 396 }
 397
 398 int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
 399 {
 400         int ret;
 401
 402         if (netxen_rom_lock(adapter) != 0)
 403                 return -EIO;
 404
 405         ret = do_rom_fast_read(adapter, addr, valp);
 406         netxen_rom_unlock(adapter);
 407         return ret;
 408 }
 409
 410 #define NETXEN_BOARDTYPE                0x4008
 411 #define NETXEN_BOARDNUM                 0x400c
 412 #define NETXEN_CHIPNUM                  0x4010
 413
 414 int netxen_pinit_from_rom(struct netxen_adapter *adapter)
 415 {
 416         int addr, val;
 417         int i, n, init_delay = 0;
 418         struct crb_addr_pair *buf;
 419         unsigned offset;
 420         u32 off;
 421
 422         /* resetall */
 423         netxen_rom_lock(adapter);
 424         NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0xfeffffff);
 425         netxen_rom_unlock(adapter);
 426
 427         if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 428                 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 429                         (n != 0xcafecafe) ||
 430                         netxen_rom_fast_read(adapter, 4, &n) != 0) {
 431                         printk(KERN_ERR "%s: ERROR Reading crb_init area: "
 432                                         "n: %08x\n", netxen_nic_driver_name, n);
 433                         return -EIO;
 434                 }
 435                 offset = n & 0xffffU;
 436                 n = (n >> 16) & 0xffffU;
 437         } else {
 438                 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 439                         !(n & 0x80000000)) {
 440                         printk(KERN_ERR "%s: ERROR Reading crb_init area: "
 441                                         "n: %08x\n", netxen_nic_driver_name, n);
 442                         return -EIO;
 443                 }
 444                 offset = 1;
 445                 n &= ~0x80000000;
 446         }
 447
 448         if (n >= 1024) {
 449                 printk(KERN_ERR "%s:n=0x%x Error! NetXen card flash not"
 450                        " initialized.\n", __func__, n);
 451                 return -EIO;
 452         }
 453
 454         buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
 455         if (buf == NULL)
 456                 return -ENOMEM;
 457
 458         for (i = 0; i < n; i++) {
 459                 if (netxen_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
 460                 netxen_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
 461                         kfree(buf);
 462                         return -EIO;
 463                 }
 464
 465                 buf[i].addr = addr;
 466                 buf[i].data = val;
 467
 468         }
 469
 470         for (i = 0; i < n; i++) {
 471
 472                 off = netxen_decode_crb_addr(buf[i].addr);
 473                 if (off == NETXEN_ADDR_ERROR) {
 474                         printk(KERN_ERR"CRB init value out of range %x\n",
 475                                         buf[i].addr);
 476                         continue;
 477                 }
 478                 off += NETXEN_PCI_CRBSPACE;
 479
 480                 if (off & 1)
 481                         continue;
 482
 483                 /* skipping cold reboot MAGIC */
 484                 if (off == NETXEN_CAM_RAM(0x1fc))
 485                         continue;
 486
 487                 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 488                         if (off == (NETXEN_CRB_I2C0 + 0x1c))
 489                                 continue;
 490                         /* do not reset PCI */
 491                         if (off == (ROMUSB_GLB + 0xbc))
 492                                 continue;
 493                         if (off == (ROMUSB_GLB + 0xa8))
 494                                 continue;
 495                         if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
 496                                 continue;
 497                         if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
 498                                 continue;
 499                         if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
 500                                 continue;
 501                         if ((off & 0x0ff00000) == NETXEN_CRB_DDR_NET)
 502                                 continue;
 503                         if (off == (NETXEN_CRB_PEG_NET_1 + 0x18) &&
 504                                 !NX_IS_REVISION_P3P(adapter->ahw.revision_id))
 505                                 buf[i].data = 0x1020;
 506                         /* skip the function enable register */
 507                         if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION))
 508                                 continue;
 509                         if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION2))
 510                                 continue;
 511                         if ((off & 0x0ff00000) == NETXEN_CRB_SMB)
 512                                 continue;
 513                 }
 514
 515                 init_delay = 1;
 516                 /* After writing this register, HW needs time for CRB */
 517                 /* to quiet down (else crb_window returns 0xffffffff) */
 518                 if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
 519                         init_delay = 1000;
 520                         if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 521                                 /* hold xdma in reset also */
 522                                 buf[i].data = NETXEN_NIC_XDMA_RESET;
 523                                 buf[i].data = 0x8000ff;
 524                         }
 525                 }
 526
 527                 NXWR32(adapter, off, buf[i].data);
 528
 529                 msleep(init_delay);
 530         }
 531         kfree(buf);
 532
 533         /* disable_peg_cache_all */
 534
 535         /* unreset_net_cache */
 536         if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 537                 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
 538                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, (val & 0xffffff0f));
 539         }
 540
 541         /* p2dn replyCount */
 542         NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
 543         /* disable_peg_cache 0 */
 544         NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0x4c, 8);
 545         /* disable_peg_cache 1 */
 546         NXWR32(adapter, NETXEN_CRB_PEG_NET_I + 0x4c, 8);
 547
 548         /* peg_clr_all */
 549
 550         /* peg_clr 0 */
 551         NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x8, 0);
 552         NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0xc, 0);
 553         /* peg_clr 1 */
 554         NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0x8, 0);
 555         NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0xc, 0);
 556         /* peg_clr 2 */
 557         NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0x8, 0);
 558         NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0xc, 0);
 559         /* peg_clr 3 */
 560         NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0x8, 0);
 561         NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0xc, 0);
 562         return 0;
 563 }
 564
 565 static struct uni_table_desc *nx_get_table_desc(const u8 *unirom, int section)
 566 {
 567         uint32_t i;
 568         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 569         __le32 entries = cpu_to_le32(directory->num_entries);
 570
 571         for (i = 0; i < entries; i++) {
 572
 573                 __le32 offs = cpu_to_le32(directory->findex) +
 574                                 (i * cpu_to_le32(directory->entry_size));
 575                 __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
 576
 577                 if (tab_type == section)
 578                         return (struct uni_table_desc *) &unirom[offs];
 579         }
 580
 581         return NULL;
 582 }
 583
 584 #define QLCNIC_FILEHEADER_SIZE  (14 * 4)
 585
 586 static int
 587 netxen_nic_validate_header(struct netxen_adapter *adapter)
 588 {
 589         const u8 *unirom = adapter->fw->data;
 590         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 591         u32 fw_file_size = adapter->fw->size;
 592         u32 tab_size;
 593         __le32 entries;
 594         __le32 entry_size;
 595
 596         if (fw_file_size < QLCNIC_FILEHEADER_SIZE)
 597                 return -EINVAL;
 598
 599         entries = cpu_to_le32(directory->num_entries);
 600         entry_size = cpu_to_le32(directory->entry_size);
 601         tab_size = cpu_to_le32(directory->findex) + (entries * entry_size);
 602
 603         if (fw_file_size < tab_size)
 604                 return -EINVAL;
 605
 606         return 0;
 607 }
 608
 609 static int
 610 netxen_nic_validate_bootld(struct netxen_adapter *adapter)
 611 {
 612         struct uni_table_desc *tab_desc;
 613         struct uni_data_desc *descr;
 614         const u8 *unirom = adapter->fw->data;
 615         __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 616                                 NX_UNI_BOOTLD_IDX_OFF));
 617         u32 offs;
 618         u32 tab_size;
 619         u32 data_size;
 620
 621         tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_BOOTLD);
 622
 623         if (!tab_desc)
 624                 return -EINVAL;
 625
 626         tab_size = cpu_to_le32(tab_desc->findex) +
 627                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 628
 629         if (adapter->fw->size < tab_size)
 630                 return -EINVAL;
 631
 632         offs = cpu_to_le32(tab_desc->findex) +
 633                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 634         descr = (struct uni_data_desc *)&unirom[offs];
 635
 636         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 637
 638         if (adapter->fw->size < data_size)
 639                 return -EINVAL;
 640
 641         return 0;
 642 }
 643
 644 static int
 645 netxen_nic_validate_fw(struct netxen_adapter *adapter)
 646 {
 647         struct uni_table_desc *tab_desc;
 648         struct uni_data_desc *descr;
 649         const u8 *unirom = adapter->fw->data;
 650         __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 651                                 NX_UNI_FIRMWARE_IDX_OFF));
 652         u32 offs;
 653         u32 tab_size;
 654         u32 data_size;
 655
 656         tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_FW);
 657
 658         if (!tab_desc)
 659                 return -EINVAL;
 660
 661         tab_size = cpu_to_le32(tab_desc->findex) +
 662                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 663
 664         if (adapter->fw->size < tab_size)
 665                 return -EINVAL;
 666
 667         offs = cpu_to_le32(tab_desc->findex) +
 668                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 669         descr = (struct uni_data_desc *)&unirom[offs];
 670         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 671
 672         if (adapter->fw->size < data_size)
 673                 return -EINVAL;
 674
 675         return 0;
 676 }
 677
 678
 679 static int
 680 netxen_nic_validate_product_offs(struct netxen_adapter *adapter)
 681 {
 682         struct uni_table_desc *ptab_descr;
 683         const u8 *unirom = adapter->fw->data;
 684         int mn_present = (NX_IS_REVISION_P2(adapter->ahw.revision_id)) ?
 685                         1 : netxen_p3_has_mn(adapter);
 686         __le32 entries;
 687         __le32 entry_size;
 688         u32 tab_size;
 689         u32 i;
 690
 691         ptab_descr = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_PRODUCT_TBL);
 692         if (ptab_descr == NULL)
 693                 return -EINVAL;
 694
 695         entries = cpu_to_le32(ptab_descr->num_entries);
 696         entry_size = cpu_to_le32(ptab_descr->entry_size);
 697         tab_size = cpu_to_le32(ptab_descr->findex) + (entries * entry_size);
 698
 699         if (adapter->fw->size < tab_size)
 700                 return -EINVAL;
 701
 702 nomn:
 703         for (i = 0; i < entries; i++) {
 704
 705                 __le32 flags, file_chiprev, offs;
 706                 u8 chiprev = adapter->ahw.revision_id;
 707                 uint32_t flagbit;
 708
 709                 offs = cpu_to_le32(ptab_descr->findex) +
 710                                 (i * cpu_to_le32(ptab_descr->entry_size));
 711                 flags = cpu_to_le32(*((int *)&unirom[offs] + NX_UNI_FLAGS_OFF));
 712                 file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
 713                                                         NX_UNI_CHIP_REV_OFF));
 714
 715                 flagbit = mn_present ? 1 : 2;
 716
 717                 if ((chiprev == file_chiprev) &&
 718                                         ((1ULL << flagbit) & flags)) {
 719                         adapter->file_prd_off = offs;
 720                         return 0;
 721                 }
 722         }
 723
 724         if (mn_present && NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 725                 mn_present = 0;
 726                 goto nomn;
 727         }
 728
 729         return -EINVAL;
 730 }
 731
 732 static int
 733 netxen_nic_validate_unified_romimage(struct netxen_adapter *adapter)
 734 {
 735         if (netxen_nic_validate_header(adapter)) {
 736                 dev_err(&adapter->pdev->dev,
 737                                 "unified image: header validation failed\n");
 738                 return -EINVAL;
 739         }
 740
 741         if (netxen_nic_validate_product_offs(adapter)) {
 742                 dev_err(&adapter->pdev->dev,
 743                                 "unified image: product validation failed\n");
 744                 return -EINVAL;
 745         }
 746
 747         if (netxen_nic_validate_bootld(adapter)) {
 748                 dev_err(&adapter->pdev->dev,
 749                                 "unified image: bootld validation failed\n");
 750                 return -EINVAL;
 751         }
 752
 753         if (netxen_nic_validate_fw(adapter)) {
 754                 dev_err(&adapter->pdev->dev,
 755                                 "unified image: firmware validation failed\n");
 756                 return -EINVAL;
 757         }
 758
 759         return 0;
 760 }
 761
 762 static struct uni_data_desc *nx_get_data_desc(struct netxen_adapter *adapter,
 763                         u32 section, u32 idx_offset)
 764 {
 765         const u8 *unirom = adapter->fw->data;
 766         int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 767                                                                 idx_offset));
 768         struct uni_table_desc *tab_desc;
 769         __le32 offs;
 770
 771         tab_desc = nx_get_table_desc(unirom, section);
 772
 773         if (tab_desc == NULL)
 774                 return NULL;
 775
 776         offs = cpu_to_le32(tab_desc->findex) +
 777                         (cpu_to_le32(tab_desc->entry_size) * idx);
 778
 779         return (struct uni_data_desc *)&unirom[offs];
 780 }
 781
 782 static u8 *
 783 nx_get_bootld_offs(struct netxen_adapter *adapter)
 784 {
 785         u32 offs = NETXEN_BOOTLD_START;
 786
 787         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 788                 offs = cpu_to_le32((nx_get_data_desc(adapter,
 789                                         NX_UNI_DIR_SECT_BOOTLD,
 790                                         NX_UNI_BOOTLD_IDX_OFF))->findex);
 791
 792         return (u8 *)&adapter->fw->data[offs];
 793 }
 794
 795 static u8 *
 796 nx_get_fw_offs(struct netxen_adapter *adapter)
 797 {
 798         u32 offs = NETXEN_IMAGE_START;
 799
 800         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 801                 offs = cpu_to_le32((nx_get_data_desc(adapter,
 802                                         NX_UNI_DIR_SECT_FW,
 803                                         NX_UNI_FIRMWARE_IDX_OFF))->findex);
 804
 805         return (u8 *)&adapter->fw->data[offs];
 806 }
 807
 808 static __le32
 809 nx_get_fw_size(struct netxen_adapter *adapter)
 810 {
 811         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 812                 return cpu_to_le32((nx_get_data_desc(adapter,
 813                                         NX_UNI_DIR_SECT_FW,
 814                                         NX_UNI_FIRMWARE_IDX_OFF))->size);
 815         else
 816                 return cpu_to_le32(
 817                                 *(u32 *)&adapter->fw->data[NX_FW_SIZE_OFFSET]);
 818 }
 819
 820 static __le32
 821 nx_get_fw_version(struct netxen_adapter *adapter)
 822 {
 823         struct uni_data_desc *fw_data_desc;
 824         const struct firmware *fw = adapter->fw;
 825         __le32 major, minor, sub;
 826         const u8 *ver_str;
 827         int i, ret = 0;
 828
 829         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 830
 831                 fw_data_desc = nx_get_data_desc(adapter,
 832                                 NX_UNI_DIR_SECT_FW, NX_UNI_FIRMWARE_IDX_OFF);
 833                 ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
 834                                 cpu_to_le32(fw_data_desc->size) - 17;
 835
 836                 for (i = 0; i < 12; i++) {
 837                         if (!strncmp(&ver_str[i], "REV=", 4)) {
 838                                 ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
 839                                                         &major, &minor, &sub);
 840                                 break;
 841                         }
 842                 }
 843
 844                 if (ret != 3)
 845                         return 0;
 846
 847                 return major + (minor << 8) + (sub << 16);
 848
 849         } else
 850                 return cpu_to_le32(*(u32 *)&fw->data[NX_FW_VERSION_OFFSET]);
 851 }
 852
 853 static __le32
 854 nx_get_bios_version(struct netxen_adapter *adapter)
 855 {
 856         const struct firmware *fw = adapter->fw;
 857         __le32 bios_ver, prd_off = adapter->file_prd_off;
 858
 859         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 860                 bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
 861                                                 + NX_UNI_BIOS_VERSION_OFF));
 862                 return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) +
 863                                                         (bios_ver >> 24);
 864         } else
 865                 return cpu_to_le32(*(u32 *)&fw->data[NX_BIOS_VERSION_OFFSET]);
 866
 867 }
 868
 869 int
 870 netxen_need_fw_reset(struct netxen_adapter *adapter)
 871 {
 872         u32 count, old_count;
 873         u32 val, version, major, minor, build;
 874         int i, timeout;
 875         u8 fw_type;
 876
 877         /* NX2031 firmware doesn't support heartbit */
 878         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 879                 return 1;
 880
 881         if (adapter->need_fw_reset)
 882                 return 1;
 883
 884         /* last attempt had failed */
 885         if (NXRD32(adapter, CRB_CMDPEG_STATE) == PHAN_INITIALIZE_FAILED)
 886                 return 1;
 887
 888         old_count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 889
 890         for (i = 0; i < 10; i++) {
 891
 892                 timeout = msleep_interruptible(200);
 893                 if (timeout) {
 894                         NXWR32(adapter, CRB_CMDPEG_STATE,
 895                                         PHAN_INITIALIZE_FAILED);
 896                         return -EINTR;
 897                 }
 898
 899                 count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 900                 if (count != old_count)
 901                         break;
 902         }
 903
 904         /* firmware is dead */
 905         if (count == old_count)
 906                 return 1;
 907
 908         /* check if we have got newer or different file firmware */
 909         if (adapter->fw) {
 910
 911                 val = nx_get_fw_version(adapter);
 912
 913                 version = NETXEN_DECODE_VERSION(val);
 914
 915                 major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
 916                 minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
 917                 build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
 918
 919                 if (version > NETXEN_VERSION_CODE(major, minor, build))
 920                         return 1;
 921
 922                 if (version == NETXEN_VERSION_CODE(major, minor, build) &&
 923                         adapter->fw_type != NX_UNIFIED_ROMIMAGE) {
 924
 925                         val = NXRD32(adapter, NETXEN_MIU_MN_CONTROL);
 926                         fw_type = (val & 0x4) ?
 927                                 NX_P3_CT_ROMIMAGE : NX_P3_MN_ROMIMAGE;
 928
 929                         if (adapter->fw_type != fw_type)
 930                                 return 1;
 931                 }
 932         }
 933
 934         return 0;
 935 }
 936
 937 #define NETXEN_MIN_P3_FW_SUPP   NETXEN_VERSION_CODE(4, 0, 505)
 938
 939 int
 940 netxen_check_flash_fw_compatibility(struct netxen_adapter *adapter)
 941 {
 942         u32 flash_fw_ver, min_fw_ver;
 943
 944         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 945                 return 0;
 946
 947         if (netxen_rom_fast_read(adapter,
 948                         NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
 949                 dev_err(&adapter->pdev->dev, "Unable to read flash fw"
 950                         "version\n");
 951                 return -EIO;
 952         }
 953
 954         flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
 955         min_fw_ver = NETXEN_MIN_P3_FW_SUPP;
 956         if (flash_fw_ver >= min_fw_ver)
 957                 return 0;
 958
 959         dev_info(&adapter->pdev->dev, "Flash fw[%d.%d.%d] is < min fw supported"
 960                 "[4.0.505]. Please update firmware on flash\n",
 961                 _major(flash_fw_ver), _minor(flash_fw_ver),
 962                 _build(flash_fw_ver));
 963         return -EINVAL;
 964 }
 965
 966 static char *fw_name[] = {
 967         NX_P2_MN_ROMIMAGE_NAME,
 968         NX_P3_CT_ROMIMAGE_NAME,
 969         NX_P3_MN_ROMIMAGE_NAME,
 970         NX_UNIFIED_ROMIMAGE_NAME,
 971         NX_FLASH_ROMIMAGE_NAME,
 972 };
 973
 974 int
 975 netxen_load_firmware(struct netxen_adapter *adapter)
 976 {
 977         u64 *ptr64;
 978         u32 i, flashaddr, size;
 979         const struct firmware *fw = adapter->fw;
 980         struct pci_dev *pdev = adapter->pdev;
 981
 982         dev_info(&pdev->dev, "loading firmware from %s\n",
 983                         fw_name[adapter->fw_type]);
 984
 985         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 986                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 1);
 987
 988         if (fw) {
 989                 __le64 data;
 990
 991                 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
 992
 993                 ptr64 = (u64 *)nx_get_bootld_offs(adapter);
 994                 flashaddr = NETXEN_BOOTLD_START;
 995
 996                 for (i = 0; i < size; i++) {
 997                         data = cpu_to_le64(ptr64[i]);
 998
 999                         if (adapter->pci_mem_write(adapter, flashaddr, data))
1000                                 return -EIO;
1001
1002                         flashaddr += 8;
1003                 }
1004
1005                 size = (__force u32)nx_get_fw_size(adapter) / 8;
1006
1007                 ptr64 = (u64 *)nx_get_fw_offs(adapter);
1008                 flashaddr = NETXEN_IMAGE_START;
1009
1010                 for (i = 0; i < size; i++) {
1011                         data = cpu_to_le64(ptr64[i]);
1012
1013                         if (adapter->pci_mem_write(adapter,
1014                                                 flashaddr, data))
1015                                 return -EIO;
1016
1017                         flashaddr += 8;
1018                 }
1019
1020                 size = (__force u32)nx_get_fw_size(adapter) % 8;
1021                 if (size) {
1022                         data = cpu_to_le64(ptr64[i]);
1023
1024                         if (adapter->pci_mem_write(adapter,
1025                                                 flashaddr, data))
1026                                 return -EIO;
1027                 }
1028
1029         } else {
1030                 u64 data;
1031                 u32 hi, lo;
1032
1033                 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
1034                 flashaddr = NETXEN_BOOTLD_START;
1035
1036                 for (i = 0; i < size; i++) {
1037                         if (netxen_rom_fast_read(adapter,
1038                                         flashaddr, (int *)&lo) != 0)
1039                                 return -EIO;
1040                         if (netxen_rom_fast_read(adapter,
1041                                         flashaddr + 4, (int *)&hi) != 0)
1042                                 return -EIO;
1043
1044                         /* hi, lo are already in host endian byteorder */
1045                         data = (((u64)hi << 32) | lo);
1046
1047                         if (adapter->pci_mem_write(adapter,
1048                                                 flashaddr, data))
1049                                 return -EIO;
1050
1051                         flashaddr += 8;
1052                 }
1053         }
1054         msleep(1);
1055
1056         if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
1057                 NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x18, 0x1020);
1058                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001e);
1059         } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1060                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001d);
1061         else {
1062                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CHIP_CLK_CTRL, 0x3fff);
1063                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 0);
1064         }
1065
1066         return 0;
1067 }
1068
1069 static int
1070 netxen_validate_firmware(struct netxen_adapter *adapter)
1071 {
1072         __le32 val;
1073         __le32 flash_fw_ver;
1074         u32 file_fw_ver, min_ver, bios;
1075         struct pci_dev *pdev = adapter->pdev;
1076         const struct firmware *fw = adapter->fw;
1077         u8 fw_type = adapter->fw_type;
1078         u32 crbinit_fix_fw;
1079
1080         if (fw_type == NX_UNIFIED_ROMIMAGE) {
1081                 if (netxen_nic_validate_unified_romimage(adapter))
1082                         return -EINVAL;
1083         } else {
1084                 val = cpu_to_le32(*(u32 *)&fw->data[NX_FW_MAGIC_OFFSET]);
1085                 if ((__force u32)val != NETXEN_BDINFO_MAGIC)
1086                         return -EINVAL;
1087
1088                 if (fw->size < NX_FW_MIN_SIZE)
1089                         return -EINVAL;
1090         }
1091
1092         val = nx_get_fw_version(adapter);
1093
1094         if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1095                 min_ver = NETXEN_MIN_P3_FW_SUPP;
1096         else
1097                 min_ver = NETXEN_VERSION_CODE(3, 4, 216);
1098
1099         file_fw_ver = NETXEN_DECODE_VERSION(val);
1100
1101         if ((_major(file_fw_ver) > _NETXEN_NIC_LINUX_MAJOR) ||
1102             (file_fw_ver < min_ver)) {
1103                 dev_err(&pdev->dev,
1104                                 "%s: firmware version %d.%d.%d unsupported\n",
1105                 fw_name[fw_type], _major(file_fw_ver), _minor(file_fw_ver),
1106                  _build(file_fw_ver));
1107                 return -EINVAL;
1108         }
1109         val = nx_get_bios_version(adapter);
1110         if (netxen_rom_fast_read(adapter, NX_BIOS_VERSION_OFFSET, (int *)&bios))
1111                 return -EIO;
1112         if ((__force u32)val != bios) {
1113                 dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
1114                                 fw_name[fw_type]);
1115                 return -EINVAL;
1116         }
1117
1118         if (netxen_rom_fast_read(adapter,
1119                         NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
1120                 dev_err(&pdev->dev, "Unable to read flash fw version\n");
1121                 return -EIO;
1122         }
1123         flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
1124
1125         /* New fw from file is not allowed, if fw on flash is < 4.0.554 */
1126         crbinit_fix_fw = NETXEN_VERSION_CODE(4, 0, 554);
1127         if (file_fw_ver >= crbinit_fix_fw && flash_fw_ver < crbinit_fix_fw &&
1128             NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1129                 dev_err(&pdev->dev, "Incompatibility detected between driver "
1130                         "and firmware version on flash. This configuration "
1131                         "is not recommended. Please update the firmware on "
1132                         "flash immediately\n");
1133                 return -EINVAL;
1134         }
1135
1136         /* check if flashed firmware is newer only for no-mn and P2 case*/
1137         if (!netxen_p3_has_mn(adapter) ||
1138             NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1139                 if (flash_fw_ver > file_fw_ver) {
1140                         dev_info(&pdev->dev, "%s: firmware is older than flash\n",
1141                                 fw_name[fw_type]);
1142                         return -EINVAL;
1143                 }
1144         }
1145
1146         NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
1147         return 0;
1148 }
1149
1150 static void
1151 nx_get_next_fwtype(struct netxen_adapter *adapter)
1152 {
1153         u8 fw_type;
1154
1155         switch (adapter->fw_type) {
1156         case NX_UNKNOWN_ROMIMAGE:
1157                 fw_type = NX_UNIFIED_ROMIMAGE;
1158                 break;
1159
1160         case NX_UNIFIED_ROMIMAGE:
1161                 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id))
1162                         fw_type = NX_FLASH_ROMIMAGE;
1163                 else if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1164                         fw_type = NX_P2_MN_ROMIMAGE;
1165                 else if (netxen_p3_has_mn(adapter))
1166                         fw_type = NX_P3_MN_ROMIMAGE;
1167                 else
1168                         fw_type = NX_P3_CT_ROMIMAGE;
1169                 break;
1170
1171         case NX_P3_MN_ROMIMAGE:
1172                 fw_type = NX_P3_CT_ROMIMAGE;
1173                 break;
1174
1175         case NX_P2_MN_ROMIMAGE:
1176         case NX_P3_CT_ROMIMAGE:
1177         default:
1178                 fw_type = NX_FLASH_ROMIMAGE;
1179                 break;
1180         }
1181
1182         adapter->fw_type = fw_type;
1183 }
1184
1185 static int
1186 netxen_p3_has_mn(struct netxen_adapter *adapter)
1187 {
1188         u32 capability, flashed_ver;
1189         capability = 0;
1190
1191         /* NX2031 always had MN */
1192         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1193                 return 1;
1194
1195         netxen_rom_fast_read(adapter,
1196                         NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
1197         flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
1198
1199         if (flashed_ver >= NETXEN_VERSION_CODE(4, 0, 220)) {
1200
1201                 capability = NXRD32(adapter, NX_PEG_TUNE_CAPABILITY);
1202                 if (capability & NX_PEG_TUNE_MN_PRESENT)
1203                         return 1;
1204         }
1205         return 0;
1206 }
1207
1208 void netxen_request_firmware(struct netxen_adapter *adapter)
1209 {
1210         struct pci_dev *pdev = adapter->pdev;
1211         int rc = 0;
1212
1213         adapter->fw_type = NX_UNKNOWN_ROMIMAGE;
1214
1215 next:
1216         nx_get_next_fwtype(adapter);
1217
1218         if (adapter->fw_type == NX_FLASH_ROMIMAGE) {
1219                 adapter->fw = NULL;
1220         } else {
1221                 rc = request_firmware(&adapter->fw,
1222                                 fw_name[adapter->fw_type], &pdev->dev);
1223                 if (rc != 0)
1224                         goto next;
1225
1226                 rc = netxen_validate_firmware(adapter);
1227                 if (rc != 0) {
1228                         release_firmware(adapter->fw);
1229                         msleep(1);
1230                         goto next;
1231                 }
1232         }
1233 }
1234
1235
1236 void
1237 netxen_release_firmware(struct netxen_adapter *adapter)
1238 {
1239         release_firmware(adapter->fw);
1240         adapter->fw = NULL;
1241 }
1242
1243 int netxen_init_dummy_dma(struct netxen_adapter *adapter)
1244 {
1245         u64 addr;
1246         u32 hi, lo;
1247
1248         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1249                 return 0;
1250
1251         adapter->dummy_dma.addr = dma_alloc_coherent(&adapter->pdev->dev,
1252                                                      NETXEN_HOST_DUMMY_DMA_SIZE,
1253                                                      &adapter->dummy_dma.phys_addr,
1254                                                      GFP_KERNEL);
1255         if (adapter->dummy_dma.addr == NULL) {
1256                 dev_err(&adapter->pdev->dev,
1257                         "ERROR: Could not allocate dummy DMA memory\n");
1258                 return -ENOMEM;
1259         }
1260
1261         addr = (uint64_t) adapter->dummy_dma.phys_addr;
1262         hi = (addr >> 32) & 0xffffffff;
1263         lo = addr & 0xffffffff;
1264
1265         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
1266         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
1267
1268         return 0;
1269 }
1270
1271 /*
1272  * NetXen DMA watchdog control:
1273  *
1274  *      Bit 0           : enabled => R/O: 1 watchdog active, 0 inactive
1275  *      Bit 1           : disable_request => 1 req disable dma watchdog
1276  *      Bit 2           : enable_request =>  1 req enable dma watchdog
1277  *      Bit 3-31        : unused
1278  */
1279 void netxen_free_dummy_dma(struct netxen_adapter *adapter)
1280 {
1281         int i = 100;
1282         u32 ctrl;
1283
1284         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1285                 return;
1286
1287         if (!adapter->dummy_dma.addr)
1288                 return;
1289
1290         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1291         if ((ctrl & 0x1) != 0) {
1292                 NXWR32(adapter, NETXEN_DMA_WATCHDOG_CTRL, (ctrl | 0x2));
1293
1294                 while ((ctrl & 0x1) != 0) {
1295
1296                         msleep(50);
1297
1298                         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1299
1300                         if (--i == 0)
1301                                 break;
1302                 }
1303         }
1304
1305         if (i) {
1306                 dma_free_coherent(&adapter->pdev->dev,
1307                                   NETXEN_HOST_DUMMY_DMA_SIZE,
1308                                   adapter->dummy_dma.addr,
1309                                   adapter->dummy_dma.phys_addr);
1310                 adapter->dummy_dma.addr = NULL;
1311         } else
1312                 dev_err(&adapter->pdev->dev, "dma_watchdog_shutdown failed\n");
1313 }
1314
1315 int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
1316 {
1317         u32 val = 0;
1318         int retries = 60;
1319
1320         if (pegtune_val)
1321                 return 0;
1322
1323         do {
1324                 val = NXRD32(adapter, CRB_CMDPEG_STATE);
1325                 switch (val) {
1326                 case PHAN_INITIALIZE_COMPLETE:
1327                 case PHAN_INITIALIZE_ACK:
1328                         return 0;
1329                 case PHAN_INITIALIZE_FAILED:
1330                         goto out_err;
1331                 default:
1332                         break;
1333                 }
1334
1335                 msleep(500);
1336
1337         } while (--retries);
1338
1339         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
1340
1341 out_err:
1342         dev_warn(&adapter->pdev->dev, "firmware init failed\n");
1343         return -EIO;
1344 }
1345
1346 static int
1347 netxen_receive_peg_ready(struct netxen_adapter *adapter)
1348 {
1349         u32 val = 0;
1350         int retries = 2000;
1351
1352         do {
1353                 val = NXRD32(adapter, CRB_RCVPEG_STATE);
1354
1355                 if (val == PHAN_PEG_RCV_INITIALIZED)
1356                         return 0;
1357
1358                 msleep(10);
1359
1360         } while (--retries);
1361
1362         pr_err("Receive Peg initialization not complete, state: 0x%x.\n", val);
1363         return -EIO;
1364 }
1365
1366 int netxen_init_firmware(struct netxen_adapter *adapter)
1367 {
1368         int err;
1369
1370         err = netxen_receive_peg_ready(adapter);
1371         if (err)
1372                 return err;
1373
1374         NXWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
1375         NXWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
1376         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
1377
1378         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1379                 NXWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
1380
1381         return err;
1382 }
1383
1384 static void
1385 netxen_handle_linkevent(struct netxen_adapter *adapter, nx_fw_msg_t *msg)
1386 {
1387         u32 cable_OUI;
1388         u16 cable_len;
1389         u16 link_speed;
1390         u8  link_status, module, duplex, autoneg;
1391         struct net_device *netdev = adapter->netdev;
1392
1393         adapter->has_link_events = 1;
1394
1395         cable_OUI = msg->body[1] & 0xffffffff;
1396         cable_len = (msg->body[1] >> 32) & 0xffff;
1397         link_speed = (msg->body[1] >> 48) & 0xffff;
1398
1399         link_status = msg->body[2] & 0xff;
1400         duplex = (msg->body[2] >> 16) & 0xff;
1401         autoneg = (msg->body[2] >> 24) & 0xff;
1402
1403         module = (msg->body[2] >> 8) & 0xff;
1404         if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) {
1405                 printk(KERN_INFO "%s: unsupported cable: OUI 0x%x, length %d\n",
1406                                 netdev->name, cable_OUI, cable_len);
1407         } else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) {
1408                 printk(KERN_INFO "%s: unsupported cable length %d\n",
1409                                 netdev->name, cable_len);
1410         }
1411
1412         /* update link parameters */
1413         if (duplex == LINKEVENT_FULL_DUPLEX)
1414                 adapter->link_duplex = DUPLEX_FULL;
1415         else
1416                 adapter->link_duplex = DUPLEX_HALF;
1417         adapter->module_type = module;
1418         adapter->link_autoneg = autoneg;
1419         adapter->link_speed = link_speed;
1420
1421         netxen_advert_link_change(adapter, link_status);
1422 }
1423
1424 static void
1425 netxen_handle_fw_message(int desc_cnt, int index,
1426                 struct nx_host_sds_ring *sds_ring)
1427 {
1428         nx_fw_msg_t msg;
1429         struct status_desc *desc;
1430         int i = 0, opcode;
1431
1432         while (desc_cnt > 0 && i < 8) {
1433                 desc = &sds_ring->desc_head[index];
1434                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1435                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1436
1437                 index = get_next_index(index, sds_ring->num_desc);
1438                 desc_cnt--;
1439         }
1440
1441         opcode = netxen_get_nic_msg_opcode(msg.body[0]);
1442         switch (opcode) {
1443         case NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1444                 netxen_handle_linkevent(sds_ring->adapter, &msg);
1445                 break;
1446         default:
1447                 break;
1448         }
1449 }
1450
1451 static int
1452 netxen_alloc_rx_skb(struct netxen_adapter *adapter,
1453                 struct nx_host_rds_ring *rds_ring,
1454                 struct netxen_rx_buffer *buffer)
1455 {
1456         struct sk_buff *skb;
1457         dma_addr_t dma;
1458         struct pci_dev *pdev = adapter->pdev;
1459
1460         buffer->skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size);
1461         if (!buffer->skb)
1462                 return 1;
1463
1464         skb = buffer->skb;
1465
1466         if (!adapter->ahw.cut_through)
1467                 skb_reserve(skb, 2);
1468
1469         dma = dma_map_single(&pdev->dev, skb->data, rds_ring->dma_size,
1470                              DMA_FROM_DEVICE);
1471
1472         if (dma_mapping_error(&pdev->dev, dma)) {
1473                 dev_kfree_skb_any(skb);
1474                 buffer->skb = NULL;
1475                 return 1;
1476         }
1477
1478         buffer->skb = skb;
1479         buffer->dma = dma;
1480         buffer->state = NETXEN_BUFFER_BUSY;
1481
1482         return 0;
1483 }
1484
1485 static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
1486                 struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
1487 {
1488         struct netxen_rx_buffer *buffer;
1489         struct sk_buff *skb;
1490
1491         buffer = &rds_ring->rx_buf_arr[index];
1492
1493         dma_unmap_single(&adapter->pdev->dev, buffer->dma, rds_ring->dma_size,
1494                          DMA_FROM_DEVICE);
1495
1496         skb = buffer->skb;
1497         if (!skb)
1498                 goto no_skb;
1499
1500         if (likely((adapter->netdev->features & NETIF_F_RXCSUM)
1501             && cksum == STATUS_CKSUM_OK)) {
1502                 adapter->stats.csummed++;
1503                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1504         } else
1505                 skb->ip_summed = CHECKSUM_NONE;
1506
1507         buffer->skb = NULL;
1508 no_skb:
1509         buffer->state = NETXEN_BUFFER_FREE;
1510         return skb;
1511 }
1512
1513 static struct netxen_rx_buffer *
1514 netxen_process_rcv(struct netxen_adapter *adapter,
1515                 struct nx_host_sds_ring *sds_ring,
1516                 int ring, u64 sts_data0)
1517 {
1518         struct net_device *netdev = adapter->netdev;
1519         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1520         struct netxen_rx_buffer *buffer;
1521         struct sk_buff *skb;
1522         struct nx_host_rds_ring *rds_ring;
1523         int index, length, cksum, pkt_offset;
1524
1525         if (unlikely(ring >= adapter->max_rds_rings))
1526                 return NULL;
1527
1528         rds_ring = &recv_ctx->rds_rings[ring];
1529
1530         index = netxen_get_sts_refhandle(sts_data0);
1531         if (unlikely(index >= rds_ring->num_desc))
1532                 return NULL;
1533
1534         buffer = &rds_ring->rx_buf_arr[index];
1535
1536         length = netxen_get_sts_totallength(sts_data0);
1537         cksum  = netxen_get_sts_status(sts_data0);
1538         pkt_offset = netxen_get_sts_pkt_offset(sts_data0);
1539
1540         skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
1541         if (!skb)
1542                 return buffer;
1543
1544         if (length > rds_ring->skb_size)
1545                 skb_put(skb, rds_ring->skb_size);
1546         else
1547                 skb_put(skb, length);
1548
1549
1550         if (pkt_offset)
1551                 skb_pull(skb, pkt_offset);
1552
1553         skb->protocol = eth_type_trans(skb, netdev);
1554
1555         napi_gro_receive(&sds_ring->napi, skb);
1556
1557         adapter->stats.rx_pkts++;
1558         adapter->stats.rxbytes += length;
1559
1560         return buffer;
1561 }
1562
1563 #define TCP_HDR_SIZE            20
1564 #define TCP_TS_OPTION_SIZE      12
1565 #define TCP_TS_HDR_SIZE         (TCP_HDR_SIZE + TCP_TS_OPTION_SIZE)
1566
1567 static struct netxen_rx_buffer *
1568 netxen_process_lro(struct netxen_adapter *adapter,
1569                 struct nx_host_sds_ring *sds_ring,
1570                 int ring, u64 sts_data0, u64 sts_data1)
1571 {
1572         struct net_device *netdev = adapter->netdev;
1573         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1574         struct netxen_rx_buffer *buffer;
1575         struct sk_buff *skb;
1576         struct nx_host_rds_ring *rds_ring;
1577         struct iphdr *iph;
1578         struct tcphdr *th;
1579         bool push, timestamp;
1580         int l2_hdr_offset, l4_hdr_offset;
1581         int index;
1582         u16 lro_length, length, data_offset;
1583         u32 seq_number;
1584         u8 vhdr_len = 0;
1585
1586         if (unlikely(ring >= adapter->max_rds_rings))
1587                 return NULL;
1588
1589         rds_ring = &recv_ctx->rds_rings[ring];
1590
1591         index = netxen_get_lro_sts_refhandle(sts_data0);
1592         if (unlikely(index >= rds_ring->num_desc))
1593                 return NULL;
1594
1595         buffer = &rds_ring->rx_buf_arr[index];
1596
1597         timestamp = netxen_get_lro_sts_timestamp(sts_data0);
1598         lro_length = netxen_get_lro_sts_length(sts_data0);
1599         l2_hdr_offset = netxen_get_lro_sts_l2_hdr_offset(sts_data0);
1600         l4_hdr_offset = netxen_get_lro_sts_l4_hdr_offset(sts_data0);
1601         push = netxen_get_lro_sts_push_flag(sts_data0);
1602         seq_number = netxen_get_lro_sts_seq_number(sts_data1);
1603
1604         skb = netxen_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1605         if (!skb)
1606                 return buffer;
1607
1608         if (timestamp)
1609                 data_offset = l4_hdr_offset + TCP_TS_HDR_SIZE;
1610         else
1611                 data_offset = l4_hdr_offset + TCP_HDR_SIZE;
1612
1613         skb_put(skb, lro_length + data_offset);
1614
1615         skb_pull(skb, l2_hdr_offset);
1616         skb->protocol = eth_type_trans(skb, netdev);
1617
1618         if (skb->protocol == htons(ETH_P_8021Q))
1619                 vhdr_len = VLAN_HLEN;
1620         iph = (struct iphdr *)(skb->data + vhdr_len);
1621         th = (struct tcphdr *)((skb->data + vhdr_len) + (iph->ihl << 2));
1622
1623         length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1624         csum_replace2(&iph->check, iph->tot_len, htons(length));
1625         iph->tot_len = htons(length);
1626         th->psh = push;
1627         th->seq = htonl(seq_number);
1628
1629         length = skb->len;
1630
1631         if (adapter->flags & NETXEN_FW_MSS_CAP)
1632                 skb_shinfo(skb)->gso_size  =  netxen_get_lro_sts_mss(sts_data1);
1633
1634         netif_receive_skb(skb);
1635
1636         adapter->stats.lro_pkts++;
1637         adapter->stats.rxbytes += length;
1638
1639         return buffer;
1640 }
1641
1642 #define netxen_merge_rx_buffers(list, head) \
1643         do { list_splice_tail_init(list, head); } while (0);
1644
1645 int
1646 netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
1647 {
1648         struct netxen_adapter *adapter = sds_ring->adapter;
1649
1650         struct list_head *cur;
1651
1652         struct status_desc *desc;
1653         struct netxen_rx_buffer *rxbuf;
1654
1655         u32 consumer = sds_ring->consumer;
1656
1657         int count = 0;
1658         u64 sts_data0, sts_data1;
1659         int opcode, ring = 0, desc_cnt;
1660
1661         while (count < max) {
1662                 desc = &sds_ring->desc_head[consumer];
1663                 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1664
1665                 if (!(sts_data0 & STATUS_OWNER_HOST))
1666                         break;
1667
1668                 desc_cnt = netxen_get_sts_desc_cnt(sts_data0);
1669
1670                 opcode = netxen_get_sts_opcode(sts_data0);
1671
1672                 switch (opcode) {
1673                 case NETXEN_NIC_RXPKT_DESC:
1674                 case NETXEN_OLD_RXPKT_DESC:
1675                 case NETXEN_NIC_SYN_OFFLOAD:
1676                         ring = netxen_get_sts_type(sts_data0);
1677                         rxbuf = netxen_process_rcv(adapter, sds_ring,
1678                                         ring, sts_data0);
1679                         break;
1680                 case NETXEN_NIC_LRO_DESC:
1681                         ring = netxen_get_lro_sts_type(sts_data0);
1682                         sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1683                         rxbuf = netxen_process_lro(adapter, sds_ring,
1684                                         ring, sts_data0, sts_data1);
1685                         break;
1686                 case NETXEN_NIC_RESPONSE_DESC:
1687                         netxen_handle_fw_message(desc_cnt, consumer, sds_ring);
1688                         goto skip;
1689                 default:
1690                         goto skip;
1691                 }
1692
1693                 WARN_ON(desc_cnt > 1);
1694
1695                 if (rxbuf)
1696                         list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1697
1698 skip:
1699                 for (; desc_cnt > 0; desc_cnt--) {
1700                         desc = &sds_ring->desc_head[consumer];
1701                         desc->status_desc_data[0] =
1702                                 cpu_to_le64(STATUS_OWNER_PHANTOM);
1703                         consumer = get_next_index(consumer, sds_ring->num_desc);
1704                 }
1705                 count++;
1706         }
1707
1708         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1709                 struct nx_host_rds_ring *rds_ring =
1710                         &adapter->recv_ctx.rds_rings[ring];
1711
1712                 if (!list_empty(&sds_ring->free_list[ring])) {
1713                         list_for_each(cur, &sds_ring->free_list[ring]) {
1714                                 rxbuf = list_entry(cur,
1715                                                 struct netxen_rx_buffer, list);
1716                                 netxen_alloc_rx_skb(adapter, rds_ring, rxbuf);
1717                         }
1718                         spin_lock(&rds_ring->lock);
1719                         netxen_merge_rx_buffers(&sds_ring->free_list[ring],
1720                                                 &rds_ring->free_list);
1721                         spin_unlock(&rds_ring->lock);
1722                 }
1723
1724                 netxen_post_rx_buffers_nodb(adapter, rds_ring);
1725         }
1726
1727         if (count) {
1728                 sds_ring->consumer = consumer;
1729                 NXWRIO(adapter, sds_ring->crb_sts_consumer, consumer);
1730         }
1731
1732         return count;
1733 }
1734
1735 /* Process Command status ring */
1736 int netxen_process_cmd_ring(struct netxen_adapter *adapter)
1737 {
1738         u32 sw_consumer, hw_consumer;
1739         int count = 0, i;
1740         struct netxen_cmd_buffer *buffer;
1741         struct pci_dev *pdev = adapter->pdev;
1742         struct net_device *netdev = adapter->netdev;
1743         struct netxen_skb_frag *frag;
1744         int done = 0;
1745         struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1746
1747         if (!spin_trylock_bh(&adapter->tx_clean_lock))
1748                 return 1;
1749
1750         sw_consumer = tx_ring->sw_consumer;
1751         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1752
1753         while (sw_consumer != hw_consumer) {
1754                 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1755                 if (buffer->skb) {
1756                         frag = &buffer->frag_array[0];
1757                         dma_unmap_single(&pdev->dev, frag->dma, frag->length,
1758                                          DMA_TO_DEVICE);
1759                         frag->dma = 0ULL;
1760                         for (i = 1; i < buffer->frag_count; i++) {
1761                                 frag++; /* Get the next frag */
1762                                 dma_unmap_page(&pdev->dev, frag->dma,
1763                                                frag->length, DMA_TO_DEVICE);
1764                                 frag->dma = 0ULL;
1765                         }
1766
1767                         adapter->stats.xmitfinished++;
1768                         dev_kfree_skb_any(buffer->skb);
1769                         buffer->skb = NULL;
1770                 }
1771
1772                 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1773                 if (++count >= MAX_STATUS_HANDLE)
1774                         break;
1775         }
1776
1777         tx_ring->sw_consumer = sw_consumer;
1778
1779         if (count && netif_running(netdev)) {
1780                 smp_mb();
1781
1782                 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev))
1783                         if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
1784                                 netif_wake_queue(netdev);
1785                 adapter->tx_timeo_cnt = 0;
1786         }
1787         /*
1788          * If everything is freed up to consumer then check if the ring is full
1789          * If the ring is full then check if more needs to be freed and
1790          * schedule the call back again.
1791          *
1792          * This happens when there are 2 CPUs. One could be freeing and the
1793          * other filling it. If the ring is full when we get out of here and
1794          * the card has already interrupted the host then the host can miss the
1795          * interrupt.
1796          *
1797          * There is still a possible race condition and the host could miss an
1798          * interrupt. The card has to take care of this.
1799          */
1800         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1801         done = (sw_consumer == hw_consumer);
1802         spin_unlock_bh(&adapter->tx_clean_lock);
1803
1804         return done;
1805 }
1806
1807 void
1808 netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
1809         struct nx_host_rds_ring *rds_ring)
1810 {
1811         struct rcv_desc *pdesc;
1812         struct netxen_rx_buffer *buffer;
1813         int producer, count = 0;
1814         netxen_ctx_msg msg = 0;
1815         struct list_head *head;
1816
1817         producer = rds_ring->producer;
1818
1819         head = &rds_ring->free_list;
1820         while (!list_empty(head)) {
1821
1822                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1823
1824                 if (!buffer->skb) {
1825                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1826                                 break;
1827                 }
1828
1829                 count++;
1830                 list_del(&buffer->list);
1831
1832                 /* make a rcv descriptor  */
1833                 pdesc = &rds_ring->desc_head[producer];
1834                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1835                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1836                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1837
1838                 producer = get_next_index(producer, rds_ring->num_desc);
1839         }
1840
1841         if (count) {
1842                 rds_ring->producer = producer;
1843                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1844                                 (producer-1) & (rds_ring->num_desc-1));
1845
1846                 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1847                         /*
1848                          * Write a doorbell msg to tell phanmon of change in
1849                          * receive ring producer
1850                          * Only for firmware version < 4.0.0
1851                          */
1852                         netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
1853                         netxen_set_msg_privid(msg);
1854                         netxen_set_msg_count(msg,
1855                                              ((producer - 1) &
1856                                               (rds_ring->num_desc - 1)));
1857                         netxen_set_msg_ctxid(msg, adapter->portnum);
1858                         netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
1859                         NXWRIO(adapter, DB_NORMALIZE(adapter,
1860                                         NETXEN_RCV_PRODUCER_OFFSET), msg);
1861                 }
1862         }
1863 }
1864
1865 static void
1866 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
1867                 struct nx_host_rds_ring *rds_ring)
1868 {
1869         struct rcv_desc *pdesc;
1870         struct netxen_rx_buffer *buffer;
1871         int producer, count = 0;
1872         struct list_head *head;
1873
1874         if (!spin_trylock(&rds_ring->lock))
1875                 return;
1876
1877         producer = rds_ring->producer;
1878
1879         head = &rds_ring->free_list;
1880         while (!list_empty(head)) {
1881
1882                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1883
1884                 if (!buffer->skb) {
1885                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1886                                 break;
1887                 }
1888
1889                 count++;
1890                 list_del(&buffer->list);
1891
1892                 /* make a rcv descriptor  */
1893                 pdesc = &rds_ring->desc_head[producer];
1894                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1895                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1896                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1897
1898                 producer = get_next_index(producer, rds_ring->num_desc);
1899         }
1900
1901         if (count) {
1902                 rds_ring->producer = producer;
1903                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1904                                 (producer - 1) & (rds_ring->num_desc - 1));
1905         }
1906         spin_unlock(&rds_ring->lock);
1907 }
1908
1909 void netxen_nic_clear_stats(struct netxen_adapter *adapter)
1910 {
1911         memset(&adapter->stats, 0, sizeof(adapter->stats));
1912 }
1913