drivers/net/netxen/netxen_nic_init.c

   1 /*
   2  * Copyright (C) 2003 - 2009 NetXen, Inc.
   3  * Copyright (C) 2009 - QLogic Corporation.
   4  * All rights reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  19  * MA  02111-1307, USA.
  20  *
  21  * The full GNU General Public License is included in this distribution
  22  * in the file called "COPYING".
  23  *
  24  */
  25
  26 #include <linux/netdevice.h>
  27 #include <linux/delay.h>
  28 #include <linux/slab.h>
  29 #include "netxen_nic.h"
  30 #include "netxen_nic_hw.h"
  31
  32 struct crb_addr_pair {
  33         u32 addr;
  34         u32 data;
  35 };
  36
  37 #define NETXEN_MAX_CRB_XFORM 60
  38 static unsigned int crb_addr_xform[NETXEN_MAX_CRB_XFORM];
  39 #define NETXEN_ADDR_ERROR (0xffffffff)
  40
  41 #define crb_addr_transform(name) \
  42         crb_addr_xform[NETXEN_HW_PX_MAP_CRB_##name] = \
  43         NETXEN_HW_CRB_HUB_AGT_ADR_##name << 20
  44
  45 #define NETXEN_NIC_XDMA_RESET 0x8000ff
  46
  47 static void
  48 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
  49                 struct nx_host_rds_ring *rds_ring);
  50 static int netxen_p3_has_mn(struct netxen_adapter *adapter);
  51
  52 static void crb_addr_transform_setup(void)
  53 {
  54         crb_addr_transform(XDMA);
  55         crb_addr_transform(TIMR);
  56         crb_addr_transform(SRE);
  57         crb_addr_transform(SQN3);
  58         crb_addr_transform(SQN2);
  59         crb_addr_transform(SQN1);
  60         crb_addr_transform(SQN0);
  61         crb_addr_transform(SQS3);
  62         crb_addr_transform(SQS2);
  63         crb_addr_transform(SQS1);
  64         crb_addr_transform(SQS0);
  65         crb_addr_transform(RPMX7);
  66         crb_addr_transform(RPMX6);
  67         crb_addr_transform(RPMX5);
  68         crb_addr_transform(RPMX4);
  69         crb_addr_transform(RPMX3);
  70         crb_addr_transform(RPMX2);
  71         crb_addr_transform(RPMX1);
  72         crb_addr_transform(RPMX0);
  73         crb_addr_transform(ROMUSB);
  74         crb_addr_transform(SN);
  75         crb_addr_transform(QMN);
  76         crb_addr_transform(QMS);
  77         crb_addr_transform(PGNI);
  78         crb_addr_transform(PGND);
  79         crb_addr_transform(PGN3);
  80         crb_addr_transform(PGN2);
  81         crb_addr_transform(PGN1);
  82         crb_addr_transform(PGN0);
  83         crb_addr_transform(PGSI);
  84         crb_addr_transform(PGSD);
  85         crb_addr_transform(PGS3);
  86         crb_addr_transform(PGS2);
  87         crb_addr_transform(PGS1);
  88         crb_addr_transform(PGS0);
  89         crb_addr_transform(PS);
  90         crb_addr_transform(PH);
  91         crb_addr_transform(NIU);
  92         crb_addr_transform(I2Q);
  93         crb_addr_transform(EG);
  94         crb_addr_transform(MN);
  95         crb_addr_transform(MS);
  96         crb_addr_transform(CAS2);
  97         crb_addr_transform(CAS1);
  98         crb_addr_transform(CAS0);
  99         crb_addr_transform(CAM);
 100         crb_addr_transform(C2C1);
 101         crb_addr_transform(C2C0);
 102         crb_addr_transform(SMB);
 103         crb_addr_transform(OCM0);
 104         crb_addr_transform(I2C0);
 105 }
 106
 107 void netxen_release_rx_buffers(struct netxen_adapter *adapter)
 108 {
 109         struct netxen_recv_context *recv_ctx;
 110         struct nx_host_rds_ring *rds_ring;
 111         struct netxen_rx_buffer *rx_buf;
 112         int i, ring;
 113
 114         recv_ctx = &adapter->recv_ctx;
 115         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 116                 rds_ring = &recv_ctx->rds_rings[ring];
 117                 for (i = 0; i < rds_ring->num_desc; ++i) {
 118                         rx_buf = &(rds_ring->rx_buf_arr[i]);
 119                         if (rx_buf->state == NETXEN_BUFFER_FREE)
 120                                 continue;
 121                         pci_unmap_single(adapter->pdev,
 122                                         rx_buf->dma,
 123                                         rds_ring->dma_size,
 124                                         PCI_DMA_FROMDEVICE);
 125                         if (rx_buf->skb != NULL)
 126                                 dev_kfree_skb_any(rx_buf->skb);
 127                 }
 128         }
 129 }
 130
 131 void netxen_release_tx_buffers(struct netxen_adapter *adapter)
 132 {
 133         struct netxen_cmd_buffer *cmd_buf;
 134         struct netxen_skb_frag *buffrag;
 135         int i, j;
 136         struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
 137
 138         cmd_buf = tx_ring->cmd_buf_arr;
 139         for (i = 0; i < tx_ring->num_desc; i++) {
 140                 buffrag = cmd_buf->frag_array;
 141                 if (buffrag->dma) {
 142                         pci_unmap_single(adapter->pdev, buffrag->dma,
 143                                          buffrag->length, PCI_DMA_TODEVICE);
 144                         buffrag->dma = 0ULL;
 145                 }
 146                 for (j = 0; j < cmd_buf->frag_count; j++) {
 147                         buffrag++;
 148                         if (buffrag->dma) {
 149                                 pci_unmap_page(adapter->pdev, buffrag->dma,
 150                                                buffrag->length,
 151                                                PCI_DMA_TODEVICE);
 152                                 buffrag->dma = 0ULL;
 153                         }
 154                 }
 155                 if (cmd_buf->skb) {
 156                         dev_kfree_skb_any(cmd_buf->skb);
 157                         cmd_buf->skb = NULL;
 158                 }
 159                 cmd_buf++;
 160         }
 161 }
 162
 163 void netxen_free_sw_resources(struct netxen_adapter *adapter)
 164 {
 165         struct netxen_recv_context *recv_ctx;
 166         struct nx_host_rds_ring *rds_ring;
 167         struct nx_host_tx_ring *tx_ring;
 168         int ring;
 169
 170         recv_ctx = &adapter->recv_ctx;
 171
 172         if (recv_ctx->rds_rings == NULL)
 173                 goto skip_rds;
 174
 175         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 176                 rds_ring = &recv_ctx->rds_rings[ring];
 177                 vfree(rds_ring->rx_buf_arr);
 178                 rds_ring->rx_buf_arr = NULL;
 179         }
 180         kfree(recv_ctx->rds_rings);
 181
 182 skip_rds:
 183         if (adapter->tx_ring == NULL)
 184                 return;
 185
 186         tx_ring = adapter->tx_ring;
 187         vfree(tx_ring->cmd_buf_arr);
 188         kfree(tx_ring);
 189         adapter->tx_ring = NULL;
 190 }
 191
 192 int netxen_alloc_sw_resources(struct netxen_adapter *adapter)
 193 {
 194         struct netxen_recv_context *recv_ctx;
 195         struct nx_host_rds_ring *rds_ring;
 196         struct nx_host_sds_ring *sds_ring;
 197         struct nx_host_tx_ring *tx_ring;
 198         struct netxen_rx_buffer *rx_buf;
 199         int ring, i, size;
 200
 201         struct netxen_cmd_buffer *cmd_buf_arr;
 202         struct net_device *netdev = adapter->netdev;
 203         struct pci_dev *pdev = adapter->pdev;
 204
 205         size = sizeof(struct nx_host_tx_ring);
 206         tx_ring = kzalloc(size, GFP_KERNEL);
 207         if (tx_ring == NULL) {
 208                 dev_err(&pdev->dev, "%s: failed to allocate tx ring struct\n",
 209                        netdev->name);
 210                 return -ENOMEM;
 211         }
 212         adapter->tx_ring = tx_ring;
 213
 214         tx_ring->num_desc = adapter->num_txd;
 215         tx_ring->txq = netdev_get_tx_queue(netdev, 0);
 216
 217         cmd_buf_arr = vzalloc(TX_BUFF_RINGSIZE(tx_ring));
 218         if (cmd_buf_arr == NULL) {
 219                 dev_err(&pdev->dev, "%s: failed to allocate cmd buffer ring\n",
 220                        netdev->name);
 221                 goto err_out;
 222         }
 223         tx_ring->cmd_buf_arr = cmd_buf_arr;
 224
 225         recv_ctx = &adapter->recv_ctx;
 226
 227         size = adapter->max_rds_rings * sizeof (struct nx_host_rds_ring);
 228         rds_ring = kzalloc(size, GFP_KERNEL);
 229         if (rds_ring == NULL) {
 230                 dev_err(&pdev->dev, "%s: failed to allocate rds ring struct\n",
 231                        netdev->name);
 232                 goto err_out;
 233         }
 234         recv_ctx->rds_rings = rds_ring;
 235
 236         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 237                 rds_ring = &recv_ctx->rds_rings[ring];
 238                 switch (ring) {
 239                 case RCV_RING_NORMAL:
 240                         rds_ring->num_desc = adapter->num_rxd;
 241                         if (adapter->ahw.cut_through) {
 242                                 rds_ring->dma_size =
 243                                         NX_CT_DEFAULT_RX_BUF_LEN;
 244                                 rds_ring->skb_size =
 245                                         NX_CT_DEFAULT_RX_BUF_LEN;
 246                         } else {
 247                                 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 248                                         rds_ring->dma_size =
 249                                                 NX_P3_RX_BUF_MAX_LEN;
 250                                 else
 251                                         rds_ring->dma_size =
 252                                                 NX_P2_RX_BUF_MAX_LEN;
 253                                 rds_ring->skb_size =
 254                                         rds_ring->dma_size + NET_IP_ALIGN;
 255                         }
 256                         break;
 257
 258                 case RCV_RING_JUMBO:
 259                         rds_ring->num_desc = adapter->num_jumbo_rxd;
 260                         if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 261                                 rds_ring->dma_size =
 262                                         NX_P3_RX_JUMBO_BUF_MAX_LEN;
 263                         else
 264                                 rds_ring->dma_size =
 265                                         NX_P2_RX_JUMBO_BUF_MAX_LEN;
 266
 267                         if (adapter->capabilities & NX_CAP0_HW_LRO)
 268                                 rds_ring->dma_size += NX_LRO_BUFFER_EXTRA;
 269
 270                         rds_ring->skb_size =
 271                                 rds_ring->dma_size + NET_IP_ALIGN;
 272                         break;
 273
 274                 case RCV_RING_LRO:
 275                         rds_ring->num_desc = adapter->num_lro_rxd;
 276                         rds_ring->dma_size = NX_RX_LRO_BUFFER_LENGTH;
 277                         rds_ring->skb_size = rds_ring->dma_size + NET_IP_ALIGN;
 278                         break;
 279
 280                 }
 281                 rds_ring->rx_buf_arr = vzalloc(RCV_BUFF_RINGSIZE(rds_ring));
 282                 if (rds_ring->rx_buf_arr == NULL) {
 283                         printk(KERN_ERR "%s: Failed to allocate "
 284                                 "rx buffer ring %d\n",
 285                                 netdev->name, ring);
 286                         /* free whatever was already allocated */
 287                         goto err_out;
 288                 }
 289                 INIT_LIST_HEAD(&rds_ring->free_list);
 290                 /*
 291                  * Now go through all of them, set reference handles
 292                  * and put them in the queues.
 293                  */
 294                 rx_buf = rds_ring->rx_buf_arr;
 295                 for (i = 0; i < rds_ring->num_desc; i++) {
 296                         list_add_tail(&rx_buf->list,
 297                                         &rds_ring->free_list);
 298                         rx_buf->ref_handle = i;
 299                         rx_buf->state = NETXEN_BUFFER_FREE;
 300                         rx_buf++;
 301                 }
 302                 spin_lock_init(&rds_ring->lock);
 303         }
 304
 305         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 306                 sds_ring = &recv_ctx->sds_rings[ring];
 307                 sds_ring->irq = adapter->msix_entries[ring].vector;
 308                 sds_ring->adapter = adapter;
 309                 sds_ring->num_desc = adapter->num_rxd;
 310
 311                 for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
 312                         INIT_LIST_HEAD(&sds_ring->free_list[i]);
 313         }
 314
 315         return 0;
 316
 317 err_out:
 318         netxen_free_sw_resources(adapter);
 319         return -ENOMEM;
 320 }
 321
 322 /*
 323  * netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
 324  * address to external PCI CRB address.
 325  */
 326 static u32 netxen_decode_crb_addr(u32 addr)
 327 {
 328         int i;
 329         u32 base_addr, offset, pci_base;
 330
 331         crb_addr_transform_setup();
 332
 333         pci_base = NETXEN_ADDR_ERROR;
 334         base_addr = addr & 0xfff00000;
 335         offset = addr & 0x000fffff;
 336
 337         for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
 338                 if (crb_addr_xform[i] == base_addr) {
 339                         pci_base = i << 20;
 340                         break;
 341                 }
 342         }
 343         if (pci_base == NETXEN_ADDR_ERROR)
 344                 return pci_base;
 345         else
 346                 return pci_base + offset;
 347 }
 348
 349 #define NETXEN_MAX_ROM_WAIT_USEC        100
 350
 351 static int netxen_wait_rom_done(struct netxen_adapter *adapter)
 352 {
 353         long timeout = 0;
 354         long done = 0;
 355
 356         cond_resched();
 357
 358         while (done == 0) {
 359                 done = NXRD32(adapter, NETXEN_ROMUSB_GLB_STATUS);
 360                 done &= 2;
 361                 if (++timeout >= NETXEN_MAX_ROM_WAIT_USEC) {
 362                         dev_err(&adapter->pdev->dev,
 363                                 "Timeout reached  waiting for rom done");
 364                         return -EIO;
 365                 }
 366                 udelay(1);
 367         }
 368         return 0;
 369 }
 370
 371 static int do_rom_fast_read(struct netxen_adapter *adapter,
 372                             int addr, int *valp)
 373 {
 374         NXWR32(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
 375         NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 376         NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
 377         NXWR32(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
 378         if (netxen_wait_rom_done(adapter)) {
 379                 printk("Error waiting for rom done\n");
 380                 return -EIO;
 381         }
 382         /* reset abyte_cnt and dummy_byte_cnt */
 383         NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
 384         udelay(10);
 385         NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 386
 387         *valp = NXRD32(adapter, NETXEN_ROMUSB_ROM_RDATA);
 388         return 0;
 389 }
 390
 391 static int do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 392                                   u8 *bytes, size_t size)
 393 {
 394         int addridx;
 395         int ret = 0;
 396
 397         for (addridx = addr; addridx < (addr + size); addridx += 4) {
 398                 int v;
 399                 ret = do_rom_fast_read(adapter, addridx, &v);
 400                 if (ret != 0)
 401                         break;
 402                 *(__le32 *)bytes = cpu_to_le32(v);
 403                 bytes += 4;
 404         }
 405
 406         return ret;
 407 }
 408
 409 int
 410 netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 411                                 u8 *bytes, size_t size)
 412 {
 413         int ret;
 414
 415         ret = netxen_rom_lock(adapter);
 416         if (ret < 0)
 417                 return ret;
 418
 419         ret = do_rom_fast_read_words(adapter, addr, bytes, size);
 420
 421         netxen_rom_unlock(adapter);
 422         return ret;
 423 }
 424
 425 int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
 426 {
 427         int ret;
 428
 429         if (netxen_rom_lock(adapter) != 0)
 430                 return -EIO;
 431
 432         ret = do_rom_fast_read(adapter, addr, valp);
 433         netxen_rom_unlock(adapter);
 434         return ret;
 435 }
 436
 437 #define NETXEN_BOARDTYPE                0x4008
 438 #define NETXEN_BOARDNUM                 0x400c
 439 #define NETXEN_CHIPNUM                  0x4010
 440
 441 int netxen_pinit_from_rom(struct netxen_adapter *adapter)
 442 {
 443         int addr, val;
 444         int i, n, init_delay = 0;
 445         struct crb_addr_pair *buf;
 446         unsigned offset;
 447         u32 off;
 448
 449         /* resetall */
 450         netxen_rom_lock(adapter);
 451         NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0xffffffff);
 452         netxen_rom_unlock(adapter);
 453
 454         if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 455                 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 456                         (n != 0xcafecafe) ||
 457                         netxen_rom_fast_read(adapter, 4, &n) != 0) {
 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 = n & 0xffffU;
 463                 n = (n >> 16) & 0xffffU;
 464         } else {
 465                 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 466                         !(n & 0x80000000)) {
 467                         printk(KERN_ERR "%s: ERROR Reading crb_init area: "
 468                                         "n: %08x\n", netxen_nic_driver_name, n);
 469                         return -EIO;
 470                 }
 471                 offset = 1;
 472                 n &= ~0x80000000;
 473         }
 474
 475         if (n >= 1024) {
 476                 printk(KERN_ERR "%s:n=0x%x Error! NetXen card flash not"
 477                        " initialized.\n", __func__, n);
 478                 return -EIO;
 479         }
 480
 481         buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
 482         if (buf == NULL) {
 483                 printk("%s: netxen_pinit_from_rom: Unable to calloc memory.\n",
 484                                 netxen_nic_driver_name);
 485                 return -ENOMEM;
 486         }
 487
 488         for (i = 0; i < n; i++) {
 489                 if (netxen_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
 490                 netxen_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
 491                         kfree(buf);
 492                         return -EIO;
 493                 }
 494
 495                 buf[i].addr = addr;
 496                 buf[i].data = val;
 497
 498         }
 499
 500         for (i = 0; i < n; i++) {
 501
 502                 off = netxen_decode_crb_addr(buf[i].addr);
 503                 if (off == NETXEN_ADDR_ERROR) {
 504                         printk(KERN_ERR"CRB init value out of range %x\n",
 505                                         buf[i].addr);
 506                         continue;
 507                 }
 508                 off += NETXEN_PCI_CRBSPACE;
 509
 510                 if (off & 1)
 511                         continue;
 512
 513                 /* skipping cold reboot MAGIC */
 514                 if (off == NETXEN_CAM_RAM(0x1fc))
 515                         continue;
 516
 517                 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 518                         if (off == (NETXEN_CRB_I2C0 + 0x1c))
 519                                 continue;
 520                         /* do not reset PCI */
 521                         if (off == (ROMUSB_GLB + 0xbc))
 522                                 continue;
 523                         if (off == (ROMUSB_GLB + 0xa8))
 524                                 continue;
 525                         if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
 526                                 continue;
 527                         if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
 528                                 continue;
 529                         if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
 530                                 continue;
 531                         if ((off & 0x0ff00000) == NETXEN_CRB_DDR_NET)
 532                                 continue;
 533                         if (off == (NETXEN_CRB_PEG_NET_1 + 0x18) &&
 534                                 !NX_IS_REVISION_P3P(adapter->ahw.revision_id))
 535                                 buf[i].data = 0x1020;
 536                         /* skip the function enable register */
 537                         if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION))
 538                                 continue;
 539                         if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION2))
 540                                 continue;
 541                         if ((off & 0x0ff00000) == NETXEN_CRB_SMB)
 542                                 continue;
 543                 }
 544
 545                 init_delay = 1;
 546                 /* After writing this register, HW needs time for CRB */
 547                 /* to quiet down (else crb_window returns 0xffffffff) */
 548                 if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
 549                         init_delay = 1000;
 550                         if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 551                                 /* hold xdma in reset also */
 552                                 buf[i].data = NETXEN_NIC_XDMA_RESET;
 553                                 buf[i].data = 0x8000ff;
 554                         }
 555                 }
 556
 557                 NXWR32(adapter, off, buf[i].data);
 558
 559                 msleep(init_delay);
 560         }
 561         kfree(buf);
 562
 563         /* disable_peg_cache_all */
 564
 565         /* unreset_net_cache */
 566         if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 567                 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
 568                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, (val & 0xffffff0f));
 569         }
 570
 571         /* p2dn replyCount */
 572         NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
 573         /* disable_peg_cache 0 */
 574         NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0x4c, 8);
 575         /* disable_peg_cache 1 */
 576         NXWR32(adapter, NETXEN_CRB_PEG_NET_I + 0x4c, 8);
 577
 578         /* peg_clr_all */
 579
 580         /* peg_clr 0 */
 581         NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x8, 0);
 582         NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0xc, 0);
 583         /* peg_clr 1 */
 584         NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0x8, 0);
 585         NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0xc, 0);
 586         /* peg_clr 2 */
 587         NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0x8, 0);
 588         NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0xc, 0);
 589         /* peg_clr 3 */
 590         NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0x8, 0);
 591         NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0xc, 0);
 592         return 0;
 593 }
 594
 595 static struct uni_table_desc *nx_get_table_desc(const u8 *unirom, int section)
 596 {
 597         uint32_t i;
 598         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 599         __le32 entries = cpu_to_le32(directory->num_entries);
 600
 601         for (i = 0; i < entries; i++) {
 602
 603                 __le32 offs = cpu_to_le32(directory->findex) +
 604                                 (i * cpu_to_le32(directory->entry_size));
 605                 __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
 606
 607                 if (tab_type == section)
 608                         return (struct uni_table_desc *) &unirom[offs];
 609         }
 610
 611         return NULL;
 612 }
 613
 614 #define QLCNIC_FILEHEADER_SIZE  (14 * 4)
 615
 616 static int
 617 netxen_nic_validate_header(struct netxen_adapter *adapter)
 618  {
 619         const u8 *unirom = adapter->fw->data;
 620         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 621         u32 fw_file_size = adapter->fw->size;
 622         u32 tab_size;
 623         __le32 entries;
 624         __le32 entry_size;
 625
 626         if (fw_file_size < QLCNIC_FILEHEADER_SIZE)
 627                 return -EINVAL;
 628
 629         entries = cpu_to_le32(directory->num_entries);
 630         entry_size = cpu_to_le32(directory->entry_size);
 631         tab_size = cpu_to_le32(directory->findex) + (entries * entry_size);
 632
 633         if (fw_file_size < tab_size)
 634                 return -EINVAL;
 635
 636         return 0;
 637 }
 638
 639 static int
 640 netxen_nic_validate_bootld(struct netxen_adapter *adapter)
 641 {
 642         struct uni_table_desc *tab_desc;
 643         struct uni_data_desc *descr;
 644         const u8 *unirom = adapter->fw->data;
 645         __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 646                                 NX_UNI_BOOTLD_IDX_OFF));
 647         u32 offs;
 648         u32 tab_size;
 649         u32 data_size;
 650
 651         tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_BOOTLD);
 652
 653         if (!tab_desc)
 654                 return -EINVAL;
 655
 656         tab_size = cpu_to_le32(tab_desc->findex) +
 657                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 658
 659         if (adapter->fw->size < tab_size)
 660                 return -EINVAL;
 661
 662         offs = cpu_to_le32(tab_desc->findex) +
 663                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 664         descr = (struct uni_data_desc *)&unirom[offs];
 665
 666         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 667
 668         if (adapter->fw->size < data_size)
 669                 return -EINVAL;
 670
 671         return 0;
 672 }
 673
 674 static int
 675 netxen_nic_validate_fw(struct netxen_adapter *adapter)
 676 {
 677         struct uni_table_desc *tab_desc;
 678         struct uni_data_desc *descr;
 679         const u8 *unirom = adapter->fw->data;
 680         __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 681                                 NX_UNI_FIRMWARE_IDX_OFF));
 682         u32 offs;
 683         u32 tab_size;
 684         u32 data_size;
 685
 686         tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_FW);
 687
 688         if (!tab_desc)
 689                 return -EINVAL;
 690
 691         tab_size = cpu_to_le32(tab_desc->findex) +
 692                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 693
 694         if (adapter->fw->size < tab_size)
 695                 return -EINVAL;
 696
 697         offs = cpu_to_le32(tab_desc->findex) +
 698                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 699         descr = (struct uni_data_desc *)&unirom[offs];
 700         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 701
 702         if (adapter->fw->size < data_size)
 703                 return -EINVAL;
 704
 705         return 0;
 706 }
 707
 708
 709 static int
 710 netxen_nic_validate_product_offs(struct netxen_adapter *adapter)
 711 {
 712         struct uni_table_desc *ptab_descr;
 713         const u8 *unirom = adapter->fw->data;
 714         int mn_present = (NX_IS_REVISION_P2(adapter->ahw.revision_id)) ?
 715                         1 : netxen_p3_has_mn(adapter);
 716         __le32 entries;
 717         __le32 entry_size;
 718         u32 tab_size;
 719         u32 i;
 720
 721         ptab_descr = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_PRODUCT_TBL);
 722         if (ptab_descr == NULL)
 723                 return -EINVAL;
 724
 725         entries = cpu_to_le32(ptab_descr->num_entries);
 726         entry_size = cpu_to_le32(ptab_descr->entry_size);
 727         tab_size = cpu_to_le32(ptab_descr->findex) + (entries * entry_size);
 728
 729         if (adapter->fw->size < tab_size)
 730                 return -EINVAL;
 731
 732 nomn:
 733         for (i = 0; i < entries; i++) {
 734
 735                 __le32 flags, file_chiprev, offs;
 736                 u8 chiprev = adapter->ahw.revision_id;
 737                 uint32_t flagbit;
 738
 739                 offs = cpu_to_le32(ptab_descr->findex) +
 740                                 (i * cpu_to_le32(ptab_descr->entry_size));
 741                 flags = cpu_to_le32(*((int *)&unirom[offs] + NX_UNI_FLAGS_OFF));
 742                 file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
 743                                                         NX_UNI_CHIP_REV_OFF));
 744
 745                 flagbit = mn_present ? 1 : 2;
 746
 747                 if ((chiprev == file_chiprev) &&
 748                                         ((1ULL << flagbit) & flags)) {
 749                         adapter->file_prd_off = offs;
 750                         return 0;
 751                 }
 752         }
 753
 754         if (mn_present && NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 755                 mn_present = 0;
 756                 goto nomn;
 757         }
 758
 759         return -EINVAL;
 760 }
 761
 762 static int
 763 netxen_nic_validate_unified_romimage(struct netxen_adapter *adapter)
 764 {
 765         if (netxen_nic_validate_header(adapter)) {
 766                 dev_err(&adapter->pdev->dev,
 767                                 "unified image: header validation failed\n");
 768                 return -EINVAL;
 769         }
 770
 771         if (netxen_nic_validate_product_offs(adapter)) {
 772                 dev_err(&adapter->pdev->dev,
 773                                 "unified image: product validation failed\n");
 774                 return -EINVAL;
 775         }
 776
 777         if (netxen_nic_validate_bootld(adapter)) {
 778                 dev_err(&adapter->pdev->dev,
 779                                 "unified image: bootld validation failed\n");
 780                 return -EINVAL;
 781         }
 782
 783         if (netxen_nic_validate_fw(adapter)) {
 784                 dev_err(&adapter->pdev->dev,
 785                                 "unified image: firmware validation failed\n");
 786                 return -EINVAL;
 787         }
 788
 789         return 0;
 790 }
 791
 792 static struct uni_data_desc *nx_get_data_desc(struct netxen_adapter *adapter,
 793                         u32 section, u32 idx_offset)
 794 {
 795         const u8 *unirom = adapter->fw->data;
 796         int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 797                                                                 idx_offset));
 798         struct uni_table_desc *tab_desc;
 799         __le32 offs;
 800
 801         tab_desc = nx_get_table_desc(unirom, section);
 802
 803         if (tab_desc == NULL)
 804                 return NULL;
 805
 806         offs = cpu_to_le32(tab_desc->findex) +
 807                         (cpu_to_le32(tab_desc->entry_size) * idx);
 808
 809         return (struct uni_data_desc *)&unirom[offs];
 810 }
 811
 812 static u8 *
 813 nx_get_bootld_offs(struct netxen_adapter *adapter)
 814 {
 815         u32 offs = NETXEN_BOOTLD_START;
 816
 817         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 818                 offs = cpu_to_le32((nx_get_data_desc(adapter,
 819                                         NX_UNI_DIR_SECT_BOOTLD,
 820                                         NX_UNI_BOOTLD_IDX_OFF))->findex);
 821
 822         return (u8 *)&adapter->fw->data[offs];
 823 }
 824
 825 static u8 *
 826 nx_get_fw_offs(struct netxen_adapter *adapter)
 827 {
 828         u32 offs = NETXEN_IMAGE_START;
 829
 830         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 831                 offs = cpu_to_le32((nx_get_data_desc(adapter,
 832                                         NX_UNI_DIR_SECT_FW,
 833                                         NX_UNI_FIRMWARE_IDX_OFF))->findex);
 834
 835         return (u8 *)&adapter->fw->data[offs];
 836 }
 837
 838 static __le32
 839 nx_get_fw_size(struct netxen_adapter *adapter)
 840 {
 841         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 842                 return cpu_to_le32((nx_get_data_desc(adapter,
 843                                         NX_UNI_DIR_SECT_FW,
 844                                         NX_UNI_FIRMWARE_IDX_OFF))->size);
 845         else
 846                 return cpu_to_le32(
 847                                 *(u32 *)&adapter->fw->data[NX_FW_SIZE_OFFSET]);
 848 }
 849
 850 static __le32
 851 nx_get_fw_version(struct netxen_adapter *adapter)
 852 {
 853         struct uni_data_desc *fw_data_desc;
 854         const struct firmware *fw = adapter->fw;
 855         __le32 major, minor, sub;
 856         const u8 *ver_str;
 857         int i, ret = 0;
 858
 859         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 860
 861                 fw_data_desc = nx_get_data_desc(adapter,
 862                                 NX_UNI_DIR_SECT_FW, NX_UNI_FIRMWARE_IDX_OFF);
 863                 ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
 864                                 cpu_to_le32(fw_data_desc->size) - 17;
 865
 866                 for (i = 0; i < 12; i++) {
 867                         if (!strncmp(&ver_str[i], "REV=", 4)) {
 868                                 ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
 869                                                         &major, &minor, &sub);
 870                                 break;
 871                         }
 872                 }
 873
 874                 if (ret != 3)
 875                         return 0;
 876
 877                 return major + (minor << 8) + (sub << 16);
 878
 879         } else
 880                 return cpu_to_le32(*(u32 *)&fw->data[NX_FW_VERSION_OFFSET]);
 881 }
 882
 883 static __le32
 884 nx_get_bios_version(struct netxen_adapter *adapter)
 885 {
 886         const struct firmware *fw = adapter->fw;
 887         __le32 bios_ver, prd_off = adapter->file_prd_off;
 888
 889         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 890                 bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
 891                                                 + NX_UNI_BIOS_VERSION_OFF));
 892                 return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) +
 893                                                         (bios_ver >> 24);
 894         } else
 895                 return cpu_to_le32(*(u32 *)&fw->data[NX_BIOS_VERSION_OFFSET]);
 896
 897 }
 898
 899 int
 900 netxen_need_fw_reset(struct netxen_adapter *adapter)
 901 {
 902         u32 count, old_count;
 903         u32 val, version, major, minor, build;
 904         int i, timeout;
 905         u8 fw_type;
 906
 907         /* NX2031 firmware doesn't support heartbit */
 908         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 909                 return 1;
 910
 911         if (adapter->need_fw_reset)
 912                 return 1;
 913
 914         /* last attempt had failed */
 915         if (NXRD32(adapter, CRB_CMDPEG_STATE) == PHAN_INITIALIZE_FAILED)
 916                 return 1;
 917
 918         old_count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 919
 920         for (i = 0; i < 10; i++) {
 921
 922                 timeout = msleep_interruptible(200);
 923                 if (timeout) {
 924                         NXWR32(adapter, CRB_CMDPEG_STATE,
 925                                         PHAN_INITIALIZE_FAILED);
 926                         return -EINTR;
 927                 }
 928
 929                 count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 930                 if (count != old_count)
 931                         break;
 932         }
 933
 934         /* firmware is dead */
 935         if (count == old_count)
 936                 return 1;
 937
 938         /* check if we have got newer or different file firmware */
 939         if (adapter->fw) {
 940
 941                 val = nx_get_fw_version(adapter);
 942
 943                 version = NETXEN_DECODE_VERSION(val);
 944
 945                 major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
 946                 minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
 947                 build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
 948
 949                 if (version > NETXEN_VERSION_CODE(major, minor, build))
 950                         return 1;
 951
 952                 if (version == NETXEN_VERSION_CODE(major, minor, build) &&
 953                         adapter->fw_type != NX_UNIFIED_ROMIMAGE) {
 954
 955                         val = NXRD32(adapter, NETXEN_MIU_MN_CONTROL);
 956                         fw_type = (val & 0x4) ?
 957                                 NX_P3_CT_ROMIMAGE : NX_P3_MN_ROMIMAGE;
 958
 959                         if (adapter->fw_type != fw_type)
 960                                 return 1;
 961                 }
 962         }
 963
 964         return 0;
 965 }
 966
 967 #define NETXEN_MIN_P3_FW_SUPP   NETXEN_VERSION_CODE(4, 0, 505)
 968
 969 int
 970 netxen_check_flash_fw_compatibility(struct netxen_adapter *adapter)
 971 {
 972         u32 flash_fw_ver, min_fw_ver;
 973
 974         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 975                 return 0;
 976
 977         if (netxen_rom_fast_read(adapter,
 978                         NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
 979                 dev_err(&adapter->pdev->dev, "Unable to read flash fw"
 980                         "version\n");
 981                 return -EIO;
 982         }
 983
 984         flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
 985         min_fw_ver = NETXEN_MIN_P3_FW_SUPP;
 986         if (flash_fw_ver >= min_fw_ver)
 987                 return 0;
 988
 989         dev_info(&adapter->pdev->dev, "Flash fw[%d.%d.%d] is < min fw supported"
 990                 "[4.0.505]. Please update firmware on flash\n",
 991                 _major(flash_fw_ver), _minor(flash_fw_ver),
 992                 _build(flash_fw_ver));
 993         return -EINVAL;
 994 }
 995
 996 static char *fw_name[] = {
 997         NX_P2_MN_ROMIMAGE_NAME,
 998         NX_P3_CT_ROMIMAGE_NAME,
 999         NX_P3_MN_ROMIMAGE_NAME,
1000         NX_UNIFIED_ROMIMAGE_NAME,
1001         NX_FLASH_ROMIMAGE_NAME,
1002 };
1003
1004 int
1005 netxen_load_firmware(struct netxen_adapter *adapter)
1006 {
1007         u64 *ptr64;
1008         u32 i, flashaddr, size;
1009         const struct firmware *fw = adapter->fw;
1010         struct pci_dev *pdev = adapter->pdev;
1011
1012         dev_info(&pdev->dev, "loading firmware from %s\n",
1013                         fw_name[adapter->fw_type]);
1014
1015         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1016                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 1);
1017
1018         if (fw) {
1019                 __le64 data;
1020
1021                 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
1022
1023                 ptr64 = (u64 *)nx_get_bootld_offs(adapter);
1024                 flashaddr = NETXEN_BOOTLD_START;
1025
1026                 for (i = 0; i < size; i++) {
1027                         data = cpu_to_le64(ptr64[i]);
1028
1029                         if (adapter->pci_mem_write(adapter, flashaddr, data))
1030                                 return -EIO;
1031
1032                         flashaddr += 8;
1033                 }
1034
1035                 size = (__force u32)nx_get_fw_size(adapter) / 8;
1036
1037                 ptr64 = (u64 *)nx_get_fw_offs(adapter);
1038                 flashaddr = NETXEN_IMAGE_START;
1039
1040                 for (i = 0; i < size; i++) {
1041                         data = cpu_to_le64(ptr64[i]);
1042
1043                         if (adapter->pci_mem_write(adapter,
1044                                                 flashaddr, data))
1045                                 return -EIO;
1046
1047                         flashaddr += 8;
1048                 }
1049
1050                 size = (__force u32)nx_get_fw_size(adapter) % 8;
1051                 if (size) {
1052                         data = cpu_to_le64(ptr64[i]);
1053
1054                         if (adapter->pci_mem_write(adapter,
1055                                                 flashaddr, data))
1056                                 return -EIO;
1057                 }
1058
1059         } else {
1060                 u64 data;
1061                 u32 hi, lo;
1062
1063                 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
1064                 flashaddr = NETXEN_BOOTLD_START;
1065
1066                 for (i = 0; i < size; i++) {
1067                         if (netxen_rom_fast_read(adapter,
1068                                         flashaddr, (int *)&lo) != 0)
1069                                 return -EIO;
1070                         if (netxen_rom_fast_read(adapter,
1071                                         flashaddr + 4, (int *)&hi) != 0)
1072                                 return -EIO;
1073
1074                         /* hi, lo are already in host endian byteorder */
1075                         data = (((u64)hi << 32) | lo);
1076
1077                         if (adapter->pci_mem_write(adapter,
1078                                                 flashaddr, data))
1079                                 return -EIO;
1080
1081                         flashaddr += 8;
1082                 }
1083         }
1084         msleep(1);
1085
1086         if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
1087                 NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x18, 0x1020);
1088                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001e);
1089         } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1090                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001d);
1091         else {
1092                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CHIP_CLK_CTRL, 0x3fff);
1093                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 0);
1094         }
1095
1096         return 0;
1097 }
1098
1099 static int
1100 netxen_validate_firmware(struct netxen_adapter *adapter)
1101 {
1102         __le32 val;
1103         __le32 flash_fw_ver;
1104         u32 file_fw_ver, min_ver, bios;
1105         struct pci_dev *pdev = adapter->pdev;
1106         const struct firmware *fw = adapter->fw;
1107         u8 fw_type = adapter->fw_type;
1108         u32 crbinit_fix_fw;
1109
1110         if (fw_type == NX_UNIFIED_ROMIMAGE) {
1111                 if (netxen_nic_validate_unified_romimage(adapter))
1112                         return -EINVAL;
1113         } else {
1114                 val = cpu_to_le32(*(u32 *)&fw->data[NX_FW_MAGIC_OFFSET]);
1115                 if ((__force u32)val != NETXEN_BDINFO_MAGIC)
1116                         return -EINVAL;
1117
1118                 if (fw->size < NX_FW_MIN_SIZE)
1119                         return -EINVAL;
1120         }
1121
1122         val = nx_get_fw_version(adapter);
1123
1124         if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1125                 min_ver = NETXEN_MIN_P3_FW_SUPP;
1126         else
1127                 min_ver = NETXEN_VERSION_CODE(3, 4, 216);
1128
1129         file_fw_ver = NETXEN_DECODE_VERSION(val);
1130
1131         if ((_major(file_fw_ver) > _NETXEN_NIC_LINUX_MAJOR) ||
1132             (file_fw_ver < min_ver)) {
1133                 dev_err(&pdev->dev,
1134                                 "%s: firmware version %d.%d.%d unsupported\n",
1135                 fw_name[fw_type], _major(file_fw_ver), _minor(file_fw_ver),
1136                  _build(file_fw_ver));
1137                 return -EINVAL;
1138         }
1139
1140         val = nx_get_bios_version(adapter);
1141         netxen_rom_fast_read(adapter, NX_BIOS_VERSION_OFFSET, (int *)&bios);
1142         if ((__force u32)val != bios) {
1143                 dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
1144                                 fw_name[fw_type]);
1145                 return -EINVAL;
1146         }
1147
1148         if (netxen_rom_fast_read(adapter,
1149                         NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
1150                 dev_err(&pdev->dev, "Unable to read flash fw version\n");
1151                 return -EIO;
1152         }
1153         flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
1154
1155         /* New fw from file is not allowed, if fw on flash is < 4.0.554 */
1156         crbinit_fix_fw = NETXEN_VERSION_CODE(4, 0, 554);
1157         if (file_fw_ver >= crbinit_fix_fw && flash_fw_ver < crbinit_fix_fw &&
1158             NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1159                 dev_err(&pdev->dev, "Incompatibility detected between driver "
1160                         "and firmware version on flash. This configuration "
1161                         "is not recommended. Please update the firmware on "
1162                         "flash immediately\n");
1163                 return -EINVAL;
1164         }
1165
1166         /* check if flashed firmware is newer only for no-mn and P2 case*/
1167         if (!netxen_p3_has_mn(adapter) ||
1168             NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1169                 if (flash_fw_ver > file_fw_ver) {
1170                         dev_info(&pdev->dev, "%s: firmware is older than flash\n",
1171                                 fw_name[fw_type]);
1172                         return -EINVAL;
1173                 }
1174         }
1175
1176         NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
1177         return 0;
1178 }
1179
1180 static void
1181 nx_get_next_fwtype(struct netxen_adapter *adapter)
1182 {
1183         u8 fw_type;
1184
1185         switch (adapter->fw_type) {
1186         case NX_UNKNOWN_ROMIMAGE:
1187                 fw_type = NX_UNIFIED_ROMIMAGE;
1188                 break;
1189
1190         case NX_UNIFIED_ROMIMAGE:
1191                 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id))
1192                         fw_type = NX_FLASH_ROMIMAGE;
1193                 else if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1194                         fw_type = NX_P2_MN_ROMIMAGE;
1195                 else if (netxen_p3_has_mn(adapter))
1196                         fw_type = NX_P3_MN_ROMIMAGE;
1197                 else
1198                         fw_type = NX_P3_CT_ROMIMAGE;
1199                 break;
1200
1201         case NX_P3_MN_ROMIMAGE:
1202                 fw_type = NX_P3_CT_ROMIMAGE;
1203                 break;
1204
1205         case NX_P2_MN_ROMIMAGE:
1206         case NX_P3_CT_ROMIMAGE:
1207         default:
1208                 fw_type = NX_FLASH_ROMIMAGE;
1209                 break;
1210         }
1211
1212         adapter->fw_type = fw_type;
1213 }
1214
1215 static int
1216 netxen_p3_has_mn(struct netxen_adapter *adapter)
1217 {
1218         u32 capability, flashed_ver;
1219         capability = 0;
1220
1221         /* NX2031 always had MN */
1222         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1223                 return 1;
1224
1225         netxen_rom_fast_read(adapter,
1226                         NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
1227         flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
1228
1229         if (flashed_ver >= NETXEN_VERSION_CODE(4, 0, 220)) {
1230
1231                 capability = NXRD32(adapter, NX_PEG_TUNE_CAPABILITY);
1232                 if (capability & NX_PEG_TUNE_MN_PRESENT)
1233                         return 1;
1234         }
1235         return 0;
1236 }
1237
1238 void netxen_request_firmware(struct netxen_adapter *adapter)
1239 {
1240         struct pci_dev *pdev = adapter->pdev;
1241         int rc = 0;
1242
1243         adapter->fw_type = NX_UNKNOWN_ROMIMAGE;
1244
1245 next:
1246         nx_get_next_fwtype(adapter);
1247
1248         if (adapter->fw_type == NX_FLASH_ROMIMAGE) {
1249                 adapter->fw = NULL;
1250         } else {
1251                 rc = request_firmware(&adapter->fw,
1252                                 fw_name[adapter->fw_type], &pdev->dev);
1253                 if (rc != 0)
1254                         goto next;
1255
1256                 rc = netxen_validate_firmware(adapter);
1257                 if (rc != 0) {
1258                         release_firmware(adapter->fw);
1259                         msleep(1);
1260                         goto next;
1261                 }
1262         }
1263 }
1264
1265
1266 void
1267 netxen_release_firmware(struct netxen_adapter *adapter)
1268 {
1269         if (adapter->fw)
1270                 release_firmware(adapter->fw);
1271         adapter->fw = NULL;
1272 }
1273
1274 int netxen_init_dummy_dma(struct netxen_adapter *adapter)
1275 {
1276         u64 addr;
1277         u32 hi, lo;
1278
1279         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1280                 return 0;
1281
1282         adapter->dummy_dma.addr = pci_alloc_consistent(adapter->pdev,
1283                                  NETXEN_HOST_DUMMY_DMA_SIZE,
1284                                  &adapter->dummy_dma.phys_addr);
1285         if (adapter->dummy_dma.addr == NULL) {
1286                 dev_err(&adapter->pdev->dev,
1287                         "ERROR: Could not allocate dummy DMA memory\n");
1288                 return -ENOMEM;
1289         }
1290
1291         addr = (uint64_t) adapter->dummy_dma.phys_addr;
1292         hi = (addr >> 32) & 0xffffffff;
1293         lo = addr & 0xffffffff;
1294
1295         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
1296         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
1297
1298         return 0;
1299 }
1300
1301 /*
1302  * NetXen DMA watchdog control:
1303  *
1304  *      Bit 0           : enabled => R/O: 1 watchdog active, 0 inactive
1305  *      Bit 1           : disable_request => 1 req disable dma watchdog
1306  *      Bit 2           : enable_request =>  1 req enable dma watchdog
1307  *      Bit 3-31        : unused
1308  */
1309 void netxen_free_dummy_dma(struct netxen_adapter *adapter)
1310 {
1311         int i = 100;
1312         u32 ctrl;
1313
1314         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1315                 return;
1316
1317         if (!adapter->dummy_dma.addr)
1318                 return;
1319
1320         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1321         if ((ctrl & 0x1) != 0) {
1322                 NXWR32(adapter, NETXEN_DMA_WATCHDOG_CTRL, (ctrl | 0x2));
1323
1324                 while ((ctrl & 0x1) != 0) {
1325
1326                         msleep(50);
1327
1328                         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1329
1330                         if (--i == 0)
1331                                 break;
1332                 }
1333         }
1334
1335         if (i) {
1336                 pci_free_consistent(adapter->pdev,
1337                             NETXEN_HOST_DUMMY_DMA_SIZE,
1338                             adapter->dummy_dma.addr,
1339                             adapter->dummy_dma.phys_addr);
1340                 adapter->dummy_dma.addr = NULL;
1341         } else
1342                 dev_err(&adapter->pdev->dev, "dma_watchdog_shutdown failed\n");
1343 }
1344
1345 int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
1346 {
1347         u32 val = 0;
1348         int retries = 60;
1349
1350         if (pegtune_val)
1351                 return 0;
1352
1353         do {
1354                 val = NXRD32(adapter, CRB_CMDPEG_STATE);
1355
1356                 switch (val) {
1357                 case PHAN_INITIALIZE_COMPLETE:
1358                 case PHAN_INITIALIZE_ACK:
1359                         return 0;
1360                 case PHAN_INITIALIZE_FAILED:
1361                         goto out_err;
1362                 default:
1363                         break;
1364                 }
1365
1366                 msleep(500);
1367
1368         } while (--retries);
1369
1370         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
1371
1372 out_err:
1373         dev_warn(&adapter->pdev->dev, "firmware init failed\n");
1374         return -EIO;
1375 }
1376
1377 static int
1378 netxen_receive_peg_ready(struct netxen_adapter *adapter)
1379 {
1380         u32 val = 0;
1381         int retries = 2000;
1382
1383         do {
1384                 val = NXRD32(adapter, CRB_RCVPEG_STATE);
1385
1386                 if (val == PHAN_PEG_RCV_INITIALIZED)
1387                         return 0;
1388
1389                 msleep(10);
1390
1391         } while (--retries);
1392
1393         if (!retries) {
1394                 printk(KERN_ERR "Receive Peg initialization not "
1395                               "complete, state: 0x%x.\n", val);
1396                 return -EIO;
1397         }
1398
1399         return 0;
1400 }
1401
1402 int netxen_init_firmware(struct netxen_adapter *adapter)
1403 {
1404         int err;
1405
1406         err = netxen_receive_peg_ready(adapter);
1407         if (err)
1408                 return err;
1409
1410         NXWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
1411         NXWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
1412         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
1413
1414         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1415                 NXWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
1416
1417         return err;
1418 }
1419
1420 static void
1421 netxen_handle_linkevent(struct netxen_adapter *adapter, nx_fw_msg_t *msg)
1422 {
1423         u32 cable_OUI;
1424         u16 cable_len;
1425         u16 link_speed;
1426         u8  link_status, module, duplex, autoneg;
1427         struct net_device *netdev = adapter->netdev;
1428
1429         adapter->has_link_events = 1;
1430
1431         cable_OUI = msg->body[1] & 0xffffffff;
1432         cable_len = (msg->body[1] >> 32) & 0xffff;
1433         link_speed = (msg->body[1] >> 48) & 0xffff;
1434
1435         link_status = msg->body[2] & 0xff;
1436         duplex = (msg->body[2] >> 16) & 0xff;
1437         autoneg = (msg->body[2] >> 24) & 0xff;
1438
1439         module = (msg->body[2] >> 8) & 0xff;
1440         if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) {
1441                 printk(KERN_INFO "%s: unsupported cable: OUI 0x%x, length %d\n",
1442                                 netdev->name, cable_OUI, cable_len);
1443         } else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) {
1444                 printk(KERN_INFO "%s: unsupported cable length %d\n",
1445                                 netdev->name, cable_len);
1446         }
1447
1448         netxen_advert_link_change(adapter, link_status);
1449
1450         /* update link parameters */
1451         if (duplex == LINKEVENT_FULL_DUPLEX)
1452                 adapter->link_duplex = DUPLEX_FULL;
1453         else
1454                 adapter->link_duplex = DUPLEX_HALF;
1455         adapter->module_type = module;
1456         adapter->link_autoneg = autoneg;
1457         adapter->link_speed = link_speed;
1458 }
1459
1460 static void
1461 netxen_handle_fw_message(int desc_cnt, int index,
1462                 struct nx_host_sds_ring *sds_ring)
1463 {
1464         nx_fw_msg_t msg;
1465         struct status_desc *desc;
1466         int i = 0, opcode;
1467
1468         while (desc_cnt > 0 && i < 8) {
1469                 desc = &sds_ring->desc_head[index];
1470                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1471                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1472
1473                 index = get_next_index(index, sds_ring->num_desc);
1474                 desc_cnt--;
1475         }
1476
1477         opcode = netxen_get_nic_msg_opcode(msg.body[0]);
1478         switch (opcode) {
1479         case NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1480                 netxen_handle_linkevent(sds_ring->adapter, &msg);
1481                 break;
1482         default:
1483                 break;
1484         }
1485 }
1486
1487 static int
1488 netxen_alloc_rx_skb(struct netxen_adapter *adapter,
1489                 struct nx_host_rds_ring *rds_ring,
1490                 struct netxen_rx_buffer *buffer)
1491 {
1492         struct sk_buff *skb;
1493         dma_addr_t dma;
1494         struct pci_dev *pdev = adapter->pdev;
1495
1496         buffer->skb = dev_alloc_skb(rds_ring->skb_size);
1497         if (!buffer->skb)
1498                 return 1;
1499
1500         skb = buffer->skb;
1501
1502         if (!adapter->ahw.cut_through)
1503                 skb_reserve(skb, 2);
1504
1505         dma = pci_map_single(pdev, skb->data,
1506                         rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1507
1508         if (pci_dma_mapping_error(pdev, dma)) {
1509                 dev_kfree_skb_any(skb);
1510                 buffer->skb = NULL;
1511                 return 1;
1512         }
1513
1514         buffer->skb = skb;
1515         buffer->dma = dma;
1516         buffer->state = NETXEN_BUFFER_BUSY;
1517
1518         return 0;
1519 }
1520
1521 static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
1522                 struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
1523 {
1524         struct netxen_rx_buffer *buffer;
1525         struct sk_buff *skb;
1526
1527         buffer = &rds_ring->rx_buf_arr[index];
1528
1529         pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
1530                         PCI_DMA_FROMDEVICE);
1531
1532         skb = buffer->skb;
1533         if (!skb)
1534                 goto no_skb;
1535
1536         if (likely((adapter->netdev->features & NETIF_F_RXCSUM)
1537             && cksum == STATUS_CKSUM_OK)) {
1538                 adapter->stats.csummed++;
1539                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1540         } else
1541                 skb->ip_summed = CHECKSUM_NONE;
1542
1543         skb->dev = adapter->netdev;
1544
1545         buffer->skb = NULL;
1546 no_skb:
1547         buffer->state = NETXEN_BUFFER_FREE;
1548         return skb;
1549 }
1550
1551 static struct netxen_rx_buffer *
1552 netxen_process_rcv(struct netxen_adapter *adapter,
1553                 struct nx_host_sds_ring *sds_ring,
1554                 int ring, u64 sts_data0)
1555 {
1556         struct net_device *netdev = adapter->netdev;
1557         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1558         struct netxen_rx_buffer *buffer;
1559         struct sk_buff *skb;
1560         struct nx_host_rds_ring *rds_ring;
1561         int index, length, cksum, pkt_offset;
1562
1563         if (unlikely(ring >= adapter->max_rds_rings))
1564                 return NULL;
1565
1566         rds_ring = &recv_ctx->rds_rings[ring];
1567
1568         index = netxen_get_sts_refhandle(sts_data0);
1569         if (unlikely(index >= rds_ring->num_desc))
1570                 return NULL;
1571
1572         buffer = &rds_ring->rx_buf_arr[index];
1573
1574         length = netxen_get_sts_totallength(sts_data0);
1575         cksum  = netxen_get_sts_status(sts_data0);
1576         pkt_offset = netxen_get_sts_pkt_offset(sts_data0);
1577
1578         skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
1579         if (!skb)
1580                 return buffer;
1581
1582         if (length > rds_ring->skb_size)
1583                 skb_put(skb, rds_ring->skb_size);
1584         else
1585                 skb_put(skb, length);
1586
1587
1588         if (pkt_offset)
1589                 skb_pull(skb, pkt_offset);
1590
1591         skb->protocol = eth_type_trans(skb, netdev);
1592
1593         napi_gro_receive(&sds_ring->napi, skb);
1594
1595         adapter->stats.rx_pkts++;
1596         adapter->stats.rxbytes += length;
1597
1598         return buffer;
1599 }
1600
1601 #define TCP_HDR_SIZE            20
1602 #define TCP_TS_OPTION_SIZE      12
1603 #define TCP_TS_HDR_SIZE         (TCP_HDR_SIZE + TCP_TS_OPTION_SIZE)
1604
1605 static struct netxen_rx_buffer *
1606 netxen_process_lro(struct netxen_adapter *adapter,
1607                 struct nx_host_sds_ring *sds_ring,
1608                 int ring, u64 sts_data0, u64 sts_data1)
1609 {
1610         struct net_device *netdev = adapter->netdev;
1611         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1612         struct netxen_rx_buffer *buffer;
1613         struct sk_buff *skb;
1614         struct nx_host_rds_ring *rds_ring;
1615         struct iphdr *iph;
1616         struct tcphdr *th;
1617         bool push, timestamp;
1618         int l2_hdr_offset, l4_hdr_offset;
1619         int index;
1620         u16 lro_length, length, data_offset;
1621         u32 seq_number;
1622
1623         if (unlikely(ring > adapter->max_rds_rings))
1624                 return NULL;
1625
1626         rds_ring = &recv_ctx->rds_rings[ring];
1627
1628         index = netxen_get_lro_sts_refhandle(sts_data0);
1629         if (unlikely(index > rds_ring->num_desc))
1630                 return NULL;
1631
1632         buffer = &rds_ring->rx_buf_arr[index];
1633
1634         timestamp = netxen_get_lro_sts_timestamp(sts_data0);
1635         lro_length = netxen_get_lro_sts_length(sts_data0);
1636         l2_hdr_offset = netxen_get_lro_sts_l2_hdr_offset(sts_data0);
1637         l4_hdr_offset = netxen_get_lro_sts_l4_hdr_offset(sts_data0);
1638         push = netxen_get_lro_sts_push_flag(sts_data0);
1639         seq_number = netxen_get_lro_sts_seq_number(sts_data1);
1640
1641         skb = netxen_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1642         if (!skb)
1643                 return buffer;
1644
1645         if (timestamp)
1646                 data_offset = l4_hdr_offset + TCP_TS_HDR_SIZE;
1647         else
1648                 data_offset = l4_hdr_offset + TCP_HDR_SIZE;
1649
1650         skb_put(skb, lro_length + data_offset);
1651
1652         skb_pull(skb, l2_hdr_offset);
1653         skb->protocol = eth_type_trans(skb, netdev);
1654
1655         iph = (struct iphdr *)skb->data;
1656         th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
1657
1658         length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1659         iph->tot_len = htons(length);
1660         iph->check = 0;
1661         iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
1662         th->psh = push;
1663         th->seq = htonl(seq_number);
1664
1665         length = skb->len;
1666
1667         netif_receive_skb(skb);
1668
1669         adapter->stats.lro_pkts++;
1670         adapter->stats.rxbytes += length;
1671
1672         return buffer;
1673 }
1674
1675 #define netxen_merge_rx_buffers(list, head) \
1676         do { list_splice_tail_init(list, head); } while (0);
1677
1678 int
1679 netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
1680 {
1681         struct netxen_adapter *adapter = sds_ring->adapter;
1682
1683         struct list_head *cur;
1684
1685         struct status_desc *desc;
1686         struct netxen_rx_buffer *rxbuf;
1687
1688         u32 consumer = sds_ring->consumer;
1689
1690         int count = 0;
1691         u64 sts_data0, sts_data1;
1692         int opcode, ring = 0, desc_cnt;
1693
1694         while (count < max) {
1695                 desc = &sds_ring->desc_head[consumer];
1696                 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1697
1698                 if (!(sts_data0 & STATUS_OWNER_HOST))
1699                         break;
1700
1701                 desc_cnt = netxen_get_sts_desc_cnt(sts_data0);
1702
1703                 opcode = netxen_get_sts_opcode(sts_data0);
1704
1705                 switch (opcode) {
1706                 case NETXEN_NIC_RXPKT_DESC:
1707                 case NETXEN_OLD_RXPKT_DESC:
1708                 case NETXEN_NIC_SYN_OFFLOAD:
1709                         ring = netxen_get_sts_type(sts_data0);
1710                         rxbuf = netxen_process_rcv(adapter, sds_ring,
1711                                         ring, sts_data0);
1712                         break;
1713                 case NETXEN_NIC_LRO_DESC:
1714                         ring = netxen_get_lro_sts_type(sts_data0);
1715                         sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1716                         rxbuf = netxen_process_lro(adapter, sds_ring,
1717                                         ring, sts_data0, sts_data1);
1718                         break;
1719                 case NETXEN_NIC_RESPONSE_DESC:
1720                         netxen_handle_fw_message(desc_cnt, consumer, sds_ring);
1721                 default:
1722                         goto skip;
1723                 }
1724
1725                 WARN_ON(desc_cnt > 1);
1726
1727                 if (rxbuf)
1728                         list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1729
1730 skip:
1731                 for (; desc_cnt > 0; desc_cnt--) {
1732                         desc = &sds_ring->desc_head[consumer];
1733                         desc->status_desc_data[0] =
1734                                 cpu_to_le64(STATUS_OWNER_PHANTOM);
1735                         consumer = get_next_index(consumer, sds_ring->num_desc);
1736                 }
1737                 count++;
1738         }
1739
1740         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1741                 struct nx_host_rds_ring *rds_ring =
1742                         &adapter->recv_ctx.rds_rings[ring];
1743
1744                 if (!list_empty(&sds_ring->free_list[ring])) {
1745                         list_for_each(cur, &sds_ring->free_list[ring]) {
1746                                 rxbuf = list_entry(cur,
1747                                                 struct netxen_rx_buffer, list);
1748                                 netxen_alloc_rx_skb(adapter, rds_ring, rxbuf);
1749                         }
1750                         spin_lock(&rds_ring->lock);
1751                         netxen_merge_rx_buffers(&sds_ring->free_list[ring],
1752                                                 &rds_ring->free_list);
1753                         spin_unlock(&rds_ring->lock);
1754                 }
1755
1756                 netxen_post_rx_buffers_nodb(adapter, rds_ring);
1757         }
1758
1759         if (count) {
1760                 sds_ring->consumer = consumer;
1761                 NXWRIO(adapter, sds_ring->crb_sts_consumer, consumer);
1762         }
1763
1764         return count;
1765 }
1766
1767 /* Process Command status ring */
1768 int netxen_process_cmd_ring(struct netxen_adapter *adapter)
1769 {
1770         u32 sw_consumer, hw_consumer;
1771         int count = 0, i;
1772         struct netxen_cmd_buffer *buffer;
1773         struct pci_dev *pdev = adapter->pdev;
1774         struct net_device *netdev = adapter->netdev;
1775         struct netxen_skb_frag *frag;
1776         int done = 0;
1777         struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1778
1779         if (!spin_trylock(&adapter->tx_clean_lock))
1780                 return 1;
1781
1782         sw_consumer = tx_ring->sw_consumer;
1783         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1784
1785         while (sw_consumer != hw_consumer) {
1786                 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1787                 if (buffer->skb) {
1788                         frag = &buffer->frag_array[0];
1789                         pci_unmap_single(pdev, frag->dma, frag->length,
1790                                          PCI_DMA_TODEVICE);
1791                         frag->dma = 0ULL;
1792                         for (i = 1; i < buffer->frag_count; i++) {
1793                                 frag++; /* Get the next frag */
1794                                 pci_unmap_page(pdev, frag->dma, frag->length,
1795                                                PCI_DMA_TODEVICE);
1796                                 frag->dma = 0ULL;
1797                         }
1798
1799                         adapter->stats.xmitfinished++;
1800                         dev_kfree_skb_any(buffer->skb);
1801                         buffer->skb = NULL;
1802                 }
1803
1804                 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1805                 if (++count >= MAX_STATUS_HANDLE)
1806                         break;
1807         }
1808
1809         if (count && netif_running(netdev)) {
1810                 tx_ring->sw_consumer = sw_consumer;
1811
1812                 smp_mb();
1813
1814                 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev))
1815                         if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
1816                                 netif_wake_queue(netdev);
1817                 adapter->tx_timeo_cnt = 0;
1818         }
1819         /*
1820          * If everything is freed up to consumer then check if the ring is full
1821          * If the ring is full then check if more needs to be freed and
1822          * schedule the call back again.
1823          *
1824          * This happens when there are 2 CPUs. One could be freeing and the
1825          * other filling it. If the ring is full when we get out of here and
1826          * the card has already interrupted the host then the host can miss the
1827          * interrupt.
1828          *
1829          * There is still a possible race condition and the host could miss an
1830          * interrupt. The card has to take care of this.
1831          */
1832         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1833         done = (sw_consumer == hw_consumer);
1834         spin_unlock(&adapter->tx_clean_lock);
1835
1836         return done;
1837 }
1838
1839 void
1840 netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
1841         struct nx_host_rds_ring *rds_ring)
1842 {
1843         struct rcv_desc *pdesc;
1844         struct netxen_rx_buffer *buffer;
1845         int producer, count = 0;
1846         netxen_ctx_msg msg = 0;
1847         struct list_head *head;
1848
1849         producer = rds_ring->producer;
1850
1851         head = &rds_ring->free_list;
1852         while (!list_empty(head)) {
1853
1854                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1855
1856                 if (!buffer->skb) {
1857                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1858                                 break;
1859                 }
1860
1861                 count++;
1862                 list_del(&buffer->list);
1863
1864                 /* make a rcv descriptor  */
1865                 pdesc = &rds_ring->desc_head[producer];
1866                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1867                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1868                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1869
1870                 producer = get_next_index(producer, rds_ring->num_desc);
1871         }
1872
1873         if (count) {
1874                 rds_ring->producer = producer;
1875                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1876                                 (producer-1) & (rds_ring->num_desc-1));
1877
1878                 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1879                         /*
1880                          * Write a doorbell msg to tell phanmon of change in
1881                          * receive ring producer
1882                          * Only for firmware version < 4.0.0
1883                          */
1884                         netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
1885                         netxen_set_msg_privid(msg);
1886                         netxen_set_msg_count(msg,
1887                                              ((producer - 1) &
1888                                               (rds_ring->num_desc - 1)));
1889                         netxen_set_msg_ctxid(msg, adapter->portnum);
1890                         netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
1891                         NXWRIO(adapter, DB_NORMALIZE(adapter,
1892                                         NETXEN_RCV_PRODUCER_OFFSET), msg);
1893                 }
1894         }
1895 }
1896
1897 static void
1898 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
1899                 struct nx_host_rds_ring *rds_ring)
1900 {
1901         struct rcv_desc *pdesc;
1902         struct netxen_rx_buffer *buffer;
1903         int producer, count = 0;
1904         struct list_head *head;
1905
1906         if (!spin_trylock(&rds_ring->lock))
1907                 return;
1908
1909         producer = rds_ring->producer;
1910
1911         head = &rds_ring->free_list;
1912         while (!list_empty(head)) {
1913
1914                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1915
1916                 if (!buffer->skb) {
1917                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1918                                 break;
1919                 }
1920
1921                 count++;
1922                 list_del(&buffer->list);
1923
1924                 /* make a rcv descriptor  */
1925                 pdesc = &rds_ring->desc_head[producer];
1926                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1927                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1928                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1929
1930                 producer = get_next_index(producer, rds_ring->num_desc);
1931         }
1932
1933         if (count) {
1934                 rds_ring->producer = producer;
1935                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1936                                 (producer - 1) & (rds_ring->num_desc - 1));
1937         }
1938         spin_unlock(&rds_ring->lock);
1939 }
1940
1941 void netxen_nic_clear_stats(struct netxen_adapter *adapter)
1942 {
1943         memset(&adapter->stats, 0, sizeof(adapter->stats));
1944 }
1945