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

   1 /*
   2  * Copyright (C) 2003 - 2009 NetXen, Inc.
   3  * Copyright (C) 2009 - QLogic Corporation.
   4  * All rights reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  19  * MA  02111-1307, USA.
  20  *
  21  * The full GNU General Public License is included in this distribution
  22  * in the file called "COPYING".
  23  *
  24  */
  25
  26 #include <linux/netdevice.h>
  27 #include <linux/delay.h>
  28 #include <linux/slab.h>
  29 #include <linux/if_vlan.h>
  30 #include "netxen_nic.h"
  31 #include "netxen_nic_hw.h"
  32
  33 struct crb_addr_pair {
  34         u32 addr;
  35         u32 data;
  36 };
  37
  38 #define NETXEN_MAX_CRB_XFORM 60
  39 static unsigned int crb_addr_xform[NETXEN_MAX_CRB_XFORM];
  40 #define NETXEN_ADDR_ERROR (0xffffffff)
  41
  42 #define crb_addr_transform(name) \
  43         crb_addr_xform[NETXEN_HW_PX_MAP_CRB_##name] = \
  44         NETXEN_HW_CRB_HUB_AGT_ADR_##name << 20
  45
  46 #define NETXEN_NIC_XDMA_RESET 0x8000ff
  47
  48 static void
  49 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
  50                 struct nx_host_rds_ring *rds_ring);
  51 static int netxen_p3_has_mn(struct netxen_adapter *adapter);
  52
  53 static void crb_addr_transform_setup(void)
  54 {
  55         crb_addr_transform(XDMA);
  56         crb_addr_transform(TIMR);
  57         crb_addr_transform(SRE);
  58         crb_addr_transform(SQN3);
  59         crb_addr_transform(SQN2);
  60         crb_addr_transform(SQN1);
  61         crb_addr_transform(SQN0);
  62         crb_addr_transform(SQS3);
  63         crb_addr_transform(SQS2);
  64         crb_addr_transform(SQS1);
  65         crb_addr_transform(SQS0);
  66         crb_addr_transform(RPMX7);
  67         crb_addr_transform(RPMX6);
  68         crb_addr_transform(RPMX5);
  69         crb_addr_transform(RPMX4);
  70         crb_addr_transform(RPMX3);
  71         crb_addr_transform(RPMX2);
  72         crb_addr_transform(RPMX1);
  73         crb_addr_transform(RPMX0);
  74         crb_addr_transform(ROMUSB);
  75         crb_addr_transform(SN);
  76         crb_addr_transform(QMN);
  77         crb_addr_transform(QMS);
  78         crb_addr_transform(PGNI);
  79         crb_addr_transform(PGND);
  80         crb_addr_transform(PGN3);
  81         crb_addr_transform(PGN2);
  82         crb_addr_transform(PGN1);
  83         crb_addr_transform(PGN0);
  84         crb_addr_transform(PGSI);
  85         crb_addr_transform(PGSD);
  86         crb_addr_transform(PGS3);
  87         crb_addr_transform(PGS2);
  88         crb_addr_transform(PGS1);
  89         crb_addr_transform(PGS0);
  90         crb_addr_transform(PS);
  91         crb_addr_transform(PH);
  92         crb_addr_transform(NIU);
  93         crb_addr_transform(I2Q);
  94         crb_addr_transform(EG);
  95         crb_addr_transform(MN);
  96         crb_addr_transform(MS);
  97         crb_addr_transform(CAS2);
  98         crb_addr_transform(CAS1);
  99         crb_addr_transform(CAS0);
 100         crb_addr_transform(CAM);
 101         crb_addr_transform(C2C1);
 102         crb_addr_transform(C2C0);
 103         crb_addr_transform(SMB);
 104         crb_addr_transform(OCM0);
 105         crb_addr_transform(I2C0);
 106 }
 107
 108 void netxen_release_rx_buffers(struct netxen_adapter *adapter)
 109 {
 110         struct netxen_recv_context *recv_ctx;
 111         struct nx_host_rds_ring *rds_ring;
 112         struct netxen_rx_buffer *rx_buf;
 113         int i, ring;
 114
 115         recv_ctx = &adapter->recv_ctx;
 116         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 117                 rds_ring = &recv_ctx->rds_rings[ring];
 118                 for (i = 0; i < rds_ring->num_desc; ++i) {
 119                         rx_buf = &(rds_ring->rx_buf_arr[i]);
 120                         if (rx_buf->state == NETXEN_BUFFER_FREE)
 121                                 continue;
 122                         pci_unmap_single(adapter->pdev,
 123                                         rx_buf->dma,
 124                                         rds_ring->dma_size,
 125                                         PCI_DMA_FROMDEVICE);
 126                         if (rx_buf->skb != NULL)
 127                                 dev_kfree_skb_any(rx_buf->skb);
 128                 }
 129         }
 130 }
 131
 132 void netxen_release_tx_buffers(struct netxen_adapter *adapter)
 133 {
 134         struct netxen_cmd_buffer *cmd_buf;
 135         struct netxen_skb_frag *buffrag;
 136         int i, j;
 137         struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
 138
 139         cmd_buf = tx_ring->cmd_buf_arr;
 140         for (i = 0; i < tx_ring->num_desc; i++) {
 141                 buffrag = cmd_buf->frag_array;
 142                 if (buffrag->dma) {
 143                         pci_unmap_single(adapter->pdev, buffrag->dma,
 144                                          buffrag->length, PCI_DMA_TODEVICE);
 145                         buffrag->dma = 0ULL;
 146                 }
 147                 for (j = 1; j < cmd_buf->frag_count; j++) {
 148                         buffrag++;
 149                         if (buffrag->dma) {
 150                                 pci_unmap_page(adapter->pdev, buffrag->dma,
 151                                                buffrag->length,
 152                                                PCI_DMA_TODEVICE);
 153                                 buffrag->dma = 0ULL;
 154                         }
 155                 }
 156                 if (cmd_buf->skb) {
 157                         dev_kfree_skb_any(cmd_buf->skb);
 158                         cmd_buf->skb = NULL;
 159                 }
 160                 cmd_buf++;
 161         }
 162 }
 163
 164 void netxen_free_sw_resources(struct netxen_adapter *adapter)
 165 {
 166         struct netxen_recv_context *recv_ctx;
 167         struct nx_host_rds_ring *rds_ring;
 168         struct nx_host_tx_ring *tx_ring;
 169         int ring;
 170
 171         recv_ctx = &adapter->recv_ctx;
 172
 173         if (recv_ctx->rds_rings == NULL)
 174                 goto skip_rds;
 175
 176         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 177                 rds_ring = &recv_ctx->rds_rings[ring];
 178                 vfree(rds_ring->rx_buf_arr);
 179                 rds_ring->rx_buf_arr = NULL;
 180         }
 181         kfree(recv_ctx->rds_rings);
 182
 183 skip_rds:
 184         if (adapter->tx_ring == NULL)
 185                 return;
 186
 187         tx_ring = adapter->tx_ring;
 188         vfree(tx_ring->cmd_buf_arr);
 189         kfree(tx_ring);
 190         adapter->tx_ring = NULL;
 191 }
 192
 193 int netxen_alloc_sw_resources(struct netxen_adapter *adapter)
 194 {
 195         struct netxen_recv_context *recv_ctx;
 196         struct nx_host_rds_ring *rds_ring;
 197         struct nx_host_sds_ring *sds_ring;
 198         struct nx_host_tx_ring *tx_ring;
 199         struct netxen_rx_buffer *rx_buf;
 200         int ring, i, size;
 201
 202         struct netxen_cmd_buffer *cmd_buf_arr;
 203         struct net_device *netdev = adapter->netdev;
 204         struct pci_dev *pdev = adapter->pdev;
 205
 206         size = sizeof(struct nx_host_tx_ring);
 207         tx_ring = kzalloc(size, GFP_KERNEL);
 208         if (tx_ring == NULL) {
 209                 dev_err(&pdev->dev, "%s: failed to allocate tx ring struct\n",
 210                        netdev->name);
 211                 return -ENOMEM;
 212         }
 213         adapter->tx_ring = tx_ring;
 214
 215         tx_ring->num_desc = adapter->num_txd;
 216         tx_ring->txq = netdev_get_tx_queue(netdev, 0);
 217
 218         cmd_buf_arr = vzalloc(TX_BUFF_RINGSIZE(tx_ring));
 219         if (cmd_buf_arr == NULL) {
 220                 dev_err(&pdev->dev, "%s: failed to allocate cmd buffer ring\n",
 221                        netdev->name);
 222                 goto err_out;
 223         }
 224         tx_ring->cmd_buf_arr = cmd_buf_arr;
 225
 226         recv_ctx = &adapter->recv_ctx;
 227
 228         size = adapter->max_rds_rings * sizeof (struct nx_host_rds_ring);
 229         rds_ring = kzalloc(size, GFP_KERNEL);
 230         if (rds_ring == NULL) {
 231                 dev_err(&pdev->dev, "%s: failed to allocate rds ring struct\n",
 232                        netdev->name);
 233                 goto err_out;
 234         }
 235         recv_ctx->rds_rings = rds_ring;
 236
 237         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 238                 rds_ring = &recv_ctx->rds_rings[ring];
 239                 switch (ring) {
 240                 case RCV_RING_NORMAL:
 241                         rds_ring->num_desc = adapter->num_rxd;
 242                         if (adapter->ahw.cut_through) {
 243                                 rds_ring->dma_size =
 244                                         NX_CT_DEFAULT_RX_BUF_LEN;
 245                                 rds_ring->skb_size =
 246                                         NX_CT_DEFAULT_RX_BUF_LEN;
 247                         } else {
 248                                 if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 249                                         rds_ring->dma_size =
 250                                                 NX_P3_RX_BUF_MAX_LEN;
 251                                 else
 252                                         rds_ring->dma_size =
 253                                                 NX_P2_RX_BUF_MAX_LEN;
 254                                 rds_ring->skb_size =
 255                                         rds_ring->dma_size + NET_IP_ALIGN;
 256                         }
 257                         break;
 258
 259                 case RCV_RING_JUMBO:
 260                         rds_ring->num_desc = adapter->num_jumbo_rxd;
 261                         if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
 262                                 rds_ring->dma_size =
 263                                         NX_P3_RX_JUMBO_BUF_MAX_LEN;
 264                         else
 265                                 rds_ring->dma_size =
 266                                         NX_P2_RX_JUMBO_BUF_MAX_LEN;
 267
 268                         if (adapter->capabilities & NX_CAP0_HW_LRO)
 269                                 rds_ring->dma_size += NX_LRO_BUFFER_EXTRA;
 270
 271                         rds_ring->skb_size =
 272                                 rds_ring->dma_size + NET_IP_ALIGN;
 273                         break;
 274
 275                 case RCV_RING_LRO:
 276                         rds_ring->num_desc = adapter->num_lro_rxd;
 277                         rds_ring->dma_size = NX_RX_LRO_BUFFER_LENGTH;
 278                         rds_ring->skb_size = rds_ring->dma_size + NET_IP_ALIGN;
 279                         break;
 280
 281                 }
 282                 rds_ring->rx_buf_arr = vzalloc(RCV_BUFF_RINGSIZE(rds_ring));
 283                 if (rds_ring->rx_buf_arr == NULL)
 284                         /* free whatever was already allocated */
 285                         goto err_out;
 286
 287                 INIT_LIST_HEAD(&rds_ring->free_list);
 288                 /*
 289                  * Now go through all of them, set reference handles
 290                  * and put them in the queues.
 291                  */
 292                 rx_buf = rds_ring->rx_buf_arr;
 293                 for (i = 0; i < rds_ring->num_desc; i++) {
 294                         list_add_tail(&rx_buf->list,
 295                                         &rds_ring->free_list);
 296                         rx_buf->ref_handle = i;
 297                         rx_buf->state = NETXEN_BUFFER_FREE;
 298                         rx_buf++;
 299                 }
 300                 spin_lock_init(&rds_ring->lock);
 301         }
 302
 303         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 304                 sds_ring = &recv_ctx->sds_rings[ring];
 305                 sds_ring->irq = adapter->msix_entries[ring].vector;
 306                 sds_ring->adapter = adapter;
 307                 sds_ring->num_desc = adapter->num_rxd;
 308
 309                 for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
 310                         INIT_LIST_HEAD(&sds_ring->free_list[i]);
 311         }
 312
 313         return 0;
 314
 315 err_out:
 316         netxen_free_sw_resources(adapter);
 317         return -ENOMEM;
 318 }
 319
 320 /*
 321  * netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
 322  * address to external PCI CRB address.
 323  */
 324 static u32 netxen_decode_crb_addr(u32 addr)
 325 {
 326         int i;
 327         u32 base_addr, offset, pci_base;
 328
 329         crb_addr_transform_setup();
 330
 331         pci_base = NETXEN_ADDR_ERROR;
 332         base_addr = addr & 0xfff00000;
 333         offset = addr & 0x000fffff;
 334
 335         for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
 336                 if (crb_addr_xform[i] == base_addr) {
 337                         pci_base = i << 20;
 338                         break;
 339                 }
 340         }
 341         if (pci_base == NETXEN_ADDR_ERROR)
 342                 return pci_base;
 343         else
 344                 return pci_base + offset;
 345 }
 346
 347 #define NETXEN_MAX_ROM_WAIT_USEC        100
 348
 349 static int netxen_wait_rom_done(struct netxen_adapter *adapter)
 350 {
 351         long timeout = 0;
 352         long done = 0;
 353
 354         cond_resched();
 355
 356         while (done == 0) {
 357                 done = NXRD32(adapter, NETXEN_ROMUSB_GLB_STATUS);
 358                 done &= 2;
 359                 if (++timeout >= NETXEN_MAX_ROM_WAIT_USEC) {
 360                         dev_err(&adapter->pdev->dev,
 361                                 "Timeout reached  waiting for rom done");
 362                         return -EIO;
 363                 }
 364                 udelay(1);
 365         }
 366         return 0;
 367 }
 368
 369 static int do_rom_fast_read(struct netxen_adapter *adapter,
 370                             int addr, int *valp)
 371 {
 372         NXWR32(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
 373         NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 374         NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
 375         NXWR32(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
 376         if (netxen_wait_rom_done(adapter)) {
 377                 printk("Error waiting for rom done\n");
 378                 return -EIO;
 379         }
 380         /* reset abyte_cnt and dummy_byte_cnt */
 381         NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
 382         udelay(10);
 383         NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 384
 385         *valp = NXRD32(adapter, NETXEN_ROMUSB_ROM_RDATA);
 386         return 0;
 387 }
 388
 389 static int do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 390                                   u8 *bytes, size_t size)
 391 {
 392         int addridx;
 393         int ret = 0;
 394
 395         for (addridx = addr; addridx < (addr + size); addridx += 4) {
 396                 int v;
 397                 ret = do_rom_fast_read(adapter, addridx, &v);
 398                 if (ret != 0)
 399                         break;
 400                 *(__le32 *)bytes = cpu_to_le32(v);
 401                 bytes += 4;
 402         }
 403
 404         return ret;
 405 }
 406
 407 int
 408 netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 409                                 u8 *bytes, size_t size)
 410 {
 411         int ret;
 412
 413         ret = netxen_rom_lock(adapter);
 414         if (ret < 0)
 415                 return ret;
 416
 417         ret = do_rom_fast_read_words(adapter, addr, bytes, size);
 418
 419         netxen_rom_unlock(adapter);
 420         return ret;
 421 }
 422
 423 int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
 424 {
 425         int ret;
 426
 427         if (netxen_rom_lock(adapter) != 0)
 428                 return -EIO;
 429
 430         ret = do_rom_fast_read(adapter, addr, valp);
 431         netxen_rom_unlock(adapter);
 432         return ret;
 433 }
 434
 435 #define NETXEN_BOARDTYPE                0x4008
 436 #define NETXEN_BOARDNUM                 0x400c
 437 #define NETXEN_CHIPNUM                  0x4010
 438
 439 int netxen_pinit_from_rom(struct netxen_adapter *adapter)
 440 {
 441         int addr, val;
 442         int i, n, init_delay = 0;
 443         struct crb_addr_pair *buf;
 444         unsigned offset;
 445         u32 off;
 446
 447         /* resetall */
 448         netxen_rom_lock(adapter);
 449         NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0xfeffffff);
 450         netxen_rom_unlock(adapter);
 451
 452         if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 453                 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 454                         (n != 0xcafecafe) ||
 455                         netxen_rom_fast_read(adapter, 4, &n) != 0) {
 456                         printk(KERN_ERR "%s: ERROR Reading crb_init area: "
 457                                         "n: %08x\n", netxen_nic_driver_name, n);
 458                         return -EIO;
 459                 }
 460                 offset = n & 0xffffU;
 461                 n = (n >> 16) & 0xffffU;
 462         } else {
 463                 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 464                         !(n & 0x80000000)) {
 465                         printk(KERN_ERR "%s: ERROR Reading crb_init area: "
 466                                         "n: %08x\n", netxen_nic_driver_name, n);
 467                         return -EIO;
 468                 }
 469                 offset = 1;
 470                 n &= ~0x80000000;
 471         }
 472
 473         if (n >= 1024) {
 474                 printk(KERN_ERR "%s:n=0x%x Error! NetXen card flash not"
 475                        " initialized.\n", __func__, n);
 476                 return -EIO;
 477         }
 478
 479         buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
 480         if (buf == NULL)
 481                 return -ENOMEM;
 482
 483         for (i = 0; i < n; i++) {
 484                 if (netxen_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
 485                 netxen_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
 486                         kfree(buf);
 487                         return -EIO;
 488                 }
 489
 490                 buf[i].addr = addr;
 491                 buf[i].data = val;
 492
 493         }
 494
 495         for (i = 0; i < n; i++) {
 496
 497                 off = netxen_decode_crb_addr(buf[i].addr);
 498                 if (off == NETXEN_ADDR_ERROR) {
 499                         printk(KERN_ERR"CRB init value out of range %x\n",
 500                                         buf[i].addr);
 501                         continue;
 502                 }
 503                 off += NETXEN_PCI_CRBSPACE;
 504
 505                 if (off & 1)
 506                         continue;
 507
 508                 /* skipping cold reboot MAGIC */
 509                 if (off == NETXEN_CAM_RAM(0x1fc))
 510                         continue;
 511
 512                 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 513                         if (off == (NETXEN_CRB_I2C0 + 0x1c))
 514                                 continue;
 515                         /* do not reset PCI */
 516                         if (off == (ROMUSB_GLB + 0xbc))
 517                                 continue;
 518                         if (off == (ROMUSB_GLB + 0xa8))
 519                                 continue;
 520                         if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
 521                                 continue;
 522                         if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
 523                                 continue;
 524                         if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
 525                                 continue;
 526                         if ((off & 0x0ff00000) == NETXEN_CRB_DDR_NET)
 527                                 continue;
 528                         if (off == (NETXEN_CRB_PEG_NET_1 + 0x18) &&
 529                                 !NX_IS_REVISION_P3P(adapter->ahw.revision_id))
 530                                 buf[i].data = 0x1020;
 531                         /* skip the function enable register */
 532                         if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION))
 533                                 continue;
 534                         if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION2))
 535                                 continue;
 536                         if ((off & 0x0ff00000) == NETXEN_CRB_SMB)
 537                                 continue;
 538                 }
 539
 540                 init_delay = 1;
 541                 /* After writing this register, HW needs time for CRB */
 542                 /* to quiet down (else crb_window returns 0xffffffff) */
 543                 if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
 544                         init_delay = 1000;
 545                         if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 546                                 /* hold xdma in reset also */
 547                                 buf[i].data = NETXEN_NIC_XDMA_RESET;
 548                                 buf[i].data = 0x8000ff;
 549                         }
 550                 }
 551
 552                 NXWR32(adapter, off, buf[i].data);
 553
 554                 msleep(init_delay);
 555         }
 556         kfree(buf);
 557
 558         /* disable_peg_cache_all */
 559
 560         /* unreset_net_cache */
 561         if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 562                 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
 563                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, (val & 0xffffff0f));
 564         }
 565
 566         /* p2dn replyCount */
 567         NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
 568         /* disable_peg_cache 0 */
 569         NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0x4c, 8);
 570         /* disable_peg_cache 1 */
 571         NXWR32(adapter, NETXEN_CRB_PEG_NET_I + 0x4c, 8);
 572
 573         /* peg_clr_all */
 574
 575         /* peg_clr 0 */
 576         NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x8, 0);
 577         NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0xc, 0);
 578         /* peg_clr 1 */
 579         NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0x8, 0);
 580         NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0xc, 0);
 581         /* peg_clr 2 */
 582         NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0x8, 0);
 583         NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0xc, 0);
 584         /* peg_clr 3 */
 585         NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0x8, 0);
 586         NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0xc, 0);
 587         return 0;
 588 }
 589
 590 static struct uni_table_desc *nx_get_table_desc(const u8 *unirom, int section)
 591 {
 592         uint32_t i;
 593         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 594         __le32 entries = cpu_to_le32(directory->num_entries);
 595
 596         for (i = 0; i < entries; i++) {
 597
 598                 __le32 offs = cpu_to_le32(directory->findex) +
 599                                 (i * cpu_to_le32(directory->entry_size));
 600                 __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
 601
 602                 if (tab_type == section)
 603                         return (struct uni_table_desc *) &unirom[offs];
 604         }
 605
 606         return NULL;
 607 }
 608
 609 #define QLCNIC_FILEHEADER_SIZE  (14 * 4)
 610
 611 static int
 612 netxen_nic_validate_header(struct netxen_adapter *adapter)
 613  {
 614         const u8 *unirom = adapter->fw->data;
 615         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 616         u32 fw_file_size = adapter->fw->size;
 617         u32 tab_size;
 618         __le32 entries;
 619         __le32 entry_size;
 620
 621         if (fw_file_size < QLCNIC_FILEHEADER_SIZE)
 622                 return -EINVAL;
 623
 624         entries = cpu_to_le32(directory->num_entries);
 625         entry_size = cpu_to_le32(directory->entry_size);
 626         tab_size = cpu_to_le32(directory->findex) + (entries * entry_size);
 627
 628         if (fw_file_size < tab_size)
 629                 return -EINVAL;
 630
 631         return 0;
 632 }
 633
 634 static int
 635 netxen_nic_validate_bootld(struct netxen_adapter *adapter)
 636 {
 637         struct uni_table_desc *tab_desc;
 638         struct uni_data_desc *descr;
 639         const u8 *unirom = adapter->fw->data;
 640         __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 641                                 NX_UNI_BOOTLD_IDX_OFF));
 642         u32 offs;
 643         u32 tab_size;
 644         u32 data_size;
 645
 646         tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_BOOTLD);
 647
 648         if (!tab_desc)
 649                 return -EINVAL;
 650
 651         tab_size = cpu_to_le32(tab_desc->findex) +
 652                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 653
 654         if (adapter->fw->size < tab_size)
 655                 return -EINVAL;
 656
 657         offs = cpu_to_le32(tab_desc->findex) +
 658                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 659         descr = (struct uni_data_desc *)&unirom[offs];
 660
 661         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 662
 663         if (adapter->fw->size < data_size)
 664                 return -EINVAL;
 665
 666         return 0;
 667 }
 668
 669 static int
 670 netxen_nic_validate_fw(struct netxen_adapter *adapter)
 671 {
 672         struct uni_table_desc *tab_desc;
 673         struct uni_data_desc *descr;
 674         const u8 *unirom = adapter->fw->data;
 675         __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 676                                 NX_UNI_FIRMWARE_IDX_OFF));
 677         u32 offs;
 678         u32 tab_size;
 679         u32 data_size;
 680
 681         tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_FW);
 682
 683         if (!tab_desc)
 684                 return -EINVAL;
 685
 686         tab_size = cpu_to_le32(tab_desc->findex) +
 687                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 688
 689         if (adapter->fw->size < tab_size)
 690                 return -EINVAL;
 691
 692         offs = cpu_to_le32(tab_desc->findex) +
 693                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 694         descr = (struct uni_data_desc *)&unirom[offs];
 695         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 696
 697         if (adapter->fw->size < data_size)
 698                 return -EINVAL;
 699
 700         return 0;
 701 }
 702
 703
 704 static int
 705 netxen_nic_validate_product_offs(struct netxen_adapter *adapter)
 706 {
 707         struct uni_table_desc *ptab_descr;
 708         const u8 *unirom = adapter->fw->data;
 709         int mn_present = (NX_IS_REVISION_P2(adapter->ahw.revision_id)) ?
 710                         1 : netxen_p3_has_mn(adapter);
 711         __le32 entries;
 712         __le32 entry_size;
 713         u32 tab_size;
 714         u32 i;
 715
 716         ptab_descr = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_PRODUCT_TBL);
 717         if (ptab_descr == NULL)
 718                 return -EINVAL;
 719
 720         entries = cpu_to_le32(ptab_descr->num_entries);
 721         entry_size = cpu_to_le32(ptab_descr->entry_size);
 722         tab_size = cpu_to_le32(ptab_descr->findex) + (entries * entry_size);
 723
 724         if (adapter->fw->size < tab_size)
 725                 return -EINVAL;
 726
 727 nomn:
 728         for (i = 0; i < entries; i++) {
 729
 730                 __le32 flags, file_chiprev, offs;
 731                 u8 chiprev = adapter->ahw.revision_id;
 732                 uint32_t flagbit;
 733
 734                 offs = cpu_to_le32(ptab_descr->findex) +
 735                                 (i * cpu_to_le32(ptab_descr->entry_size));
 736                 flags = cpu_to_le32(*((int *)&unirom[offs] + NX_UNI_FLAGS_OFF));
 737                 file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
 738                                                         NX_UNI_CHIP_REV_OFF));
 739
 740                 flagbit = mn_present ? 1 : 2;
 741
 742                 if ((chiprev == file_chiprev) &&
 743                                         ((1ULL << flagbit) & flags)) {
 744                         adapter->file_prd_off = offs;
 745                         return 0;
 746                 }
 747         }
 748
 749         if (mn_present && NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 750                 mn_present = 0;
 751                 goto nomn;
 752         }
 753
 754         return -EINVAL;
 755 }
 756
 757 static int
 758 netxen_nic_validate_unified_romimage(struct netxen_adapter *adapter)
 759 {
 760         if (netxen_nic_validate_header(adapter)) {
 761                 dev_err(&adapter->pdev->dev,
 762                                 "unified image: header validation failed\n");
 763                 return -EINVAL;
 764         }
 765
 766         if (netxen_nic_validate_product_offs(adapter)) {
 767                 dev_err(&adapter->pdev->dev,
 768                                 "unified image: product validation failed\n");
 769                 return -EINVAL;
 770         }
 771
 772         if (netxen_nic_validate_bootld(adapter)) {
 773                 dev_err(&adapter->pdev->dev,
 774                                 "unified image: bootld validation failed\n");
 775                 return -EINVAL;
 776         }
 777
 778         if (netxen_nic_validate_fw(adapter)) {
 779                 dev_err(&adapter->pdev->dev,
 780                                 "unified image: firmware validation failed\n");
 781                 return -EINVAL;
 782         }
 783
 784         return 0;
 785 }
 786
 787 static struct uni_data_desc *nx_get_data_desc(struct netxen_adapter *adapter,
 788                         u32 section, u32 idx_offset)
 789 {
 790         const u8 *unirom = adapter->fw->data;
 791         int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 792                                                                 idx_offset));
 793         struct uni_table_desc *tab_desc;
 794         __le32 offs;
 795
 796         tab_desc = nx_get_table_desc(unirom, section);
 797
 798         if (tab_desc == NULL)
 799                 return NULL;
 800
 801         offs = cpu_to_le32(tab_desc->findex) +
 802                         (cpu_to_le32(tab_desc->entry_size) * idx);
 803
 804         return (struct uni_data_desc *)&unirom[offs];
 805 }
 806
 807 static u8 *
 808 nx_get_bootld_offs(struct netxen_adapter *adapter)
 809 {
 810         u32 offs = NETXEN_BOOTLD_START;
 811
 812         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 813                 offs = cpu_to_le32((nx_get_data_desc(adapter,
 814                                         NX_UNI_DIR_SECT_BOOTLD,
 815                                         NX_UNI_BOOTLD_IDX_OFF))->findex);
 816
 817         return (u8 *)&adapter->fw->data[offs];
 818 }
 819
 820 static u8 *
 821 nx_get_fw_offs(struct netxen_adapter *adapter)
 822 {
 823         u32 offs = NETXEN_IMAGE_START;
 824
 825         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 826                 offs = cpu_to_le32((nx_get_data_desc(adapter,
 827                                         NX_UNI_DIR_SECT_FW,
 828                                         NX_UNI_FIRMWARE_IDX_OFF))->findex);
 829
 830         return (u8 *)&adapter->fw->data[offs];
 831 }
 832
 833 static __le32
 834 nx_get_fw_size(struct netxen_adapter *adapter)
 835 {
 836         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 837                 return cpu_to_le32((nx_get_data_desc(adapter,
 838                                         NX_UNI_DIR_SECT_FW,
 839                                         NX_UNI_FIRMWARE_IDX_OFF))->size);
 840         else
 841                 return cpu_to_le32(
 842                                 *(u32 *)&adapter->fw->data[NX_FW_SIZE_OFFSET]);
 843 }
 844
 845 static __le32
 846 nx_get_fw_version(struct netxen_adapter *adapter)
 847 {
 848         struct uni_data_desc *fw_data_desc;
 849         const struct firmware *fw = adapter->fw;
 850         __le32 major, minor, sub;
 851         const u8 *ver_str;
 852         int i, ret = 0;
 853
 854         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 855
 856                 fw_data_desc = nx_get_data_desc(adapter,
 857                                 NX_UNI_DIR_SECT_FW, NX_UNI_FIRMWARE_IDX_OFF);
 858                 ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
 859                                 cpu_to_le32(fw_data_desc->size) - 17;
 860
 861                 for (i = 0; i < 12; i++) {
 862                         if (!strncmp(&ver_str[i], "REV=", 4)) {
 863                                 ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
 864                                                         &major, &minor, &sub);
 865                                 break;
 866                         }
 867                 }
 868
 869                 if (ret != 3)
 870                         return 0;
 871
 872                 return major + (minor << 8) + (sub << 16);
 873
 874         } else
 875                 return cpu_to_le32(*(u32 *)&fw->data[NX_FW_VERSION_OFFSET]);
 876 }
 877
 878 static __le32
 879 nx_get_bios_version(struct netxen_adapter *adapter)
 880 {
 881         const struct firmware *fw = adapter->fw;
 882         __le32 bios_ver, prd_off = adapter->file_prd_off;
 883
 884         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 885                 bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
 886                                                 + NX_UNI_BIOS_VERSION_OFF));
 887                 return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) +
 888                                                         (bios_ver >> 24);
 889         } else
 890                 return cpu_to_le32(*(u32 *)&fw->data[NX_BIOS_VERSION_OFFSET]);
 891
 892 }
 893
 894 int
 895 netxen_need_fw_reset(struct netxen_adapter *adapter)
 896 {
 897         u32 count, old_count;
 898         u32 val, version, major, minor, build;
 899         int i, timeout;
 900         u8 fw_type;
 901
 902         /* NX2031 firmware doesn't support heartbit */
 903         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 904                 return 1;
 905
 906         if (adapter->need_fw_reset)
 907                 return 1;
 908
 909         /* last attempt had failed */
 910         if (NXRD32(adapter, CRB_CMDPEG_STATE) == PHAN_INITIALIZE_FAILED)
 911                 return 1;
 912
 913         old_count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 914
 915         for (i = 0; i < 10; i++) {
 916
 917                 timeout = msleep_interruptible(200);
 918                 if (timeout) {
 919                         NXWR32(adapter, CRB_CMDPEG_STATE,
 920                                         PHAN_INITIALIZE_FAILED);
 921                         return -EINTR;
 922                 }
 923
 924                 count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 925                 if (count != old_count)
 926                         break;
 927         }
 928
 929         /* firmware is dead */
 930         if (count == old_count)
 931                 return 1;
 932
 933         /* check if we have got newer or different file firmware */
 934         if (adapter->fw) {
 935
 936                 val = nx_get_fw_version(adapter);
 937
 938                 version = NETXEN_DECODE_VERSION(val);
 939
 940                 major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
 941                 minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
 942                 build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
 943
 944                 if (version > NETXEN_VERSION_CODE(major, minor, build))
 945                         return 1;
 946
 947                 if (version == NETXEN_VERSION_CODE(major, minor, build) &&
 948                         adapter->fw_type != NX_UNIFIED_ROMIMAGE) {
 949
 950                         val = NXRD32(adapter, NETXEN_MIU_MN_CONTROL);
 951                         fw_type = (val & 0x4) ?
 952                                 NX_P3_CT_ROMIMAGE : NX_P3_MN_ROMIMAGE;
 953
 954                         if (adapter->fw_type != fw_type)
 955                                 return 1;
 956                 }
 957         }
 958
 959         return 0;
 960 }
 961
 962 #define NETXEN_MIN_P3_FW_SUPP   NETXEN_VERSION_CODE(4, 0, 505)
 963
 964 int
 965 netxen_check_flash_fw_compatibility(struct netxen_adapter *adapter)
 966 {
 967         u32 flash_fw_ver, min_fw_ver;
 968
 969         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 970                 return 0;
 971
 972         if (netxen_rom_fast_read(adapter,
 973                         NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
 974                 dev_err(&adapter->pdev->dev, "Unable to read flash fw"
 975                         "version\n");
 976                 return -EIO;
 977         }
 978
 979         flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
 980         min_fw_ver = NETXEN_MIN_P3_FW_SUPP;
 981         if (flash_fw_ver >= min_fw_ver)
 982                 return 0;
 983
 984         dev_info(&adapter->pdev->dev, "Flash fw[%d.%d.%d] is < min fw supported"
 985                 "[4.0.505]. Please update firmware on flash\n",
 986                 _major(flash_fw_ver), _minor(flash_fw_ver),
 987                 _build(flash_fw_ver));
 988         return -EINVAL;
 989 }
 990
 991 static char *fw_name[] = {
 992         NX_P2_MN_ROMIMAGE_NAME,
 993         NX_P3_CT_ROMIMAGE_NAME,
 994         NX_P3_MN_ROMIMAGE_NAME,
 995         NX_UNIFIED_ROMIMAGE_NAME,
 996         NX_FLASH_ROMIMAGE_NAME,
 997 };
 998
 999 int
1000 netxen_load_firmware(struct netxen_adapter *adapter)
1001 {
1002         u64 *ptr64;
1003         u32 i, flashaddr, size;
1004         const struct firmware *fw = adapter->fw;
1005         struct pci_dev *pdev = adapter->pdev;
1006
1007         dev_info(&pdev->dev, "loading firmware from %s\n",
1008                         fw_name[adapter->fw_type]);
1009
1010         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1011                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 1);
1012
1013         if (fw) {
1014                 __le64 data;
1015
1016                 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
1017
1018                 ptr64 = (u64 *)nx_get_bootld_offs(adapter);
1019                 flashaddr = NETXEN_BOOTLD_START;
1020
1021                 for (i = 0; i < size; i++) {
1022                         data = cpu_to_le64(ptr64[i]);
1023
1024                         if (adapter->pci_mem_write(adapter, flashaddr, data))
1025                                 return -EIO;
1026
1027                         flashaddr += 8;
1028                 }
1029
1030                 size = (__force u32)nx_get_fw_size(adapter) / 8;
1031
1032                 ptr64 = (u64 *)nx_get_fw_offs(adapter);
1033                 flashaddr = NETXEN_IMAGE_START;
1034
1035                 for (i = 0; i < size; i++) {
1036                         data = cpu_to_le64(ptr64[i]);
1037
1038                         if (adapter->pci_mem_write(adapter,
1039                                                 flashaddr, data))
1040                                 return -EIO;
1041
1042                         flashaddr += 8;
1043                 }
1044
1045                 size = (__force u32)nx_get_fw_size(adapter) % 8;
1046                 if (size) {
1047                         data = cpu_to_le64(ptr64[i]);
1048
1049                         if (adapter->pci_mem_write(adapter,
1050                                                 flashaddr, data))
1051                                 return -EIO;
1052                 }
1053
1054         } else {
1055                 u64 data;
1056                 u32 hi, lo;
1057
1058                 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
1059                 flashaddr = NETXEN_BOOTLD_START;
1060
1061                 for (i = 0; i < size; i++) {
1062                         if (netxen_rom_fast_read(adapter,
1063                                         flashaddr, (int *)&lo) != 0)
1064                                 return -EIO;
1065                         if (netxen_rom_fast_read(adapter,
1066                                         flashaddr + 4, (int *)&hi) != 0)
1067                                 return -EIO;
1068
1069                         /* hi, lo are already in host endian byteorder */
1070                         data = (((u64)hi << 32) | lo);
1071
1072                         if (adapter->pci_mem_write(adapter,
1073                                                 flashaddr, data))
1074                                 return -EIO;
1075
1076                         flashaddr += 8;
1077                 }
1078         }
1079         msleep(1);
1080
1081         if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
1082                 NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x18, 0x1020);
1083                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001e);
1084         } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1085                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001d);
1086         else {
1087                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CHIP_CLK_CTRL, 0x3fff);
1088                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 0);
1089         }
1090
1091         return 0;
1092 }
1093
1094 static int
1095 netxen_validate_firmware(struct netxen_adapter *adapter)
1096 {
1097         __le32 val;
1098         __le32 flash_fw_ver;
1099         u32 file_fw_ver, min_ver, bios;
1100         struct pci_dev *pdev = adapter->pdev;
1101         const struct firmware *fw = adapter->fw;
1102         u8 fw_type = adapter->fw_type;
1103         u32 crbinit_fix_fw;
1104
1105         if (fw_type == NX_UNIFIED_ROMIMAGE) {
1106                 if (netxen_nic_validate_unified_romimage(adapter))
1107                         return -EINVAL;
1108         } else {
1109                 val = cpu_to_le32(*(u32 *)&fw->data[NX_FW_MAGIC_OFFSET]);
1110                 if ((__force u32)val != NETXEN_BDINFO_MAGIC)
1111                         return -EINVAL;
1112
1113                 if (fw->size < NX_FW_MIN_SIZE)
1114                         return -EINVAL;
1115         }
1116
1117         val = nx_get_fw_version(adapter);
1118
1119         if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1120                 min_ver = NETXEN_MIN_P3_FW_SUPP;
1121         else
1122                 min_ver = NETXEN_VERSION_CODE(3, 4, 216);
1123
1124         file_fw_ver = NETXEN_DECODE_VERSION(val);
1125
1126         if ((_major(file_fw_ver) > _NETXEN_NIC_LINUX_MAJOR) ||
1127             (file_fw_ver < min_ver)) {
1128                 dev_err(&pdev->dev,
1129                                 "%s: firmware version %d.%d.%d unsupported\n",
1130                 fw_name[fw_type], _major(file_fw_ver), _minor(file_fw_ver),
1131                  _build(file_fw_ver));
1132                 return -EINVAL;
1133         }
1134         val = nx_get_bios_version(adapter);
1135         netxen_rom_fast_read(adapter, NX_BIOS_VERSION_OFFSET, (int *)&bios);
1136         if ((__force u32)val != bios) {
1137                 dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
1138                                 fw_name[fw_type]);
1139                 return -EINVAL;
1140         }
1141
1142         if (netxen_rom_fast_read(adapter,
1143                         NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
1144                 dev_err(&pdev->dev, "Unable to read flash fw version\n");
1145                 return -EIO;
1146         }
1147         flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
1148
1149         /* New fw from file is not allowed, if fw on flash is < 4.0.554 */
1150         crbinit_fix_fw = NETXEN_VERSION_CODE(4, 0, 554);
1151         if (file_fw_ver >= crbinit_fix_fw && flash_fw_ver < crbinit_fix_fw &&
1152             NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1153                 dev_err(&pdev->dev, "Incompatibility detected between driver "
1154                         "and firmware version on flash. This configuration "
1155                         "is not recommended. Please update the firmware on "
1156                         "flash immediately\n");
1157                 return -EINVAL;
1158         }
1159
1160         /* check if flashed firmware is newer only for no-mn and P2 case*/
1161         if (!netxen_p3_has_mn(adapter) ||
1162             NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1163                 if (flash_fw_ver > file_fw_ver) {
1164                         dev_info(&pdev->dev, "%s: firmware is older than flash\n",
1165                                 fw_name[fw_type]);
1166                         return -EINVAL;
1167                 }
1168         }
1169
1170         NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
1171         return 0;
1172 }
1173
1174 static void
1175 nx_get_next_fwtype(struct netxen_adapter *adapter)
1176 {
1177         u8 fw_type;
1178
1179         switch (adapter->fw_type) {
1180         case NX_UNKNOWN_ROMIMAGE:
1181                 fw_type = NX_UNIFIED_ROMIMAGE;
1182                 break;
1183
1184         case NX_UNIFIED_ROMIMAGE:
1185                 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id))
1186                         fw_type = NX_FLASH_ROMIMAGE;
1187                 else if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1188                         fw_type = NX_P2_MN_ROMIMAGE;
1189                 else if (netxen_p3_has_mn(adapter))
1190                         fw_type = NX_P3_MN_ROMIMAGE;
1191                 else
1192                         fw_type = NX_P3_CT_ROMIMAGE;
1193                 break;
1194
1195         case NX_P3_MN_ROMIMAGE:
1196                 fw_type = NX_P3_CT_ROMIMAGE;
1197                 break;
1198
1199         case NX_P2_MN_ROMIMAGE:
1200         case NX_P3_CT_ROMIMAGE:
1201         default:
1202                 fw_type = NX_FLASH_ROMIMAGE;
1203                 break;
1204         }
1205
1206         adapter->fw_type = fw_type;
1207 }
1208
1209 static int
1210 netxen_p3_has_mn(struct netxen_adapter *adapter)
1211 {
1212         u32 capability, flashed_ver;
1213         capability = 0;
1214
1215         /* NX2031 always had MN */
1216         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1217                 return 1;
1218
1219         netxen_rom_fast_read(adapter,
1220                         NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
1221         flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
1222
1223         if (flashed_ver >= NETXEN_VERSION_CODE(4, 0, 220)) {
1224
1225                 capability = NXRD32(adapter, NX_PEG_TUNE_CAPABILITY);
1226                 if (capability & NX_PEG_TUNE_MN_PRESENT)
1227                         return 1;
1228         }
1229         return 0;
1230 }
1231
1232 void netxen_request_firmware(struct netxen_adapter *adapter)
1233 {
1234         struct pci_dev *pdev = adapter->pdev;
1235         int rc = 0;
1236
1237         adapter->fw_type = NX_UNKNOWN_ROMIMAGE;
1238
1239 next:
1240         nx_get_next_fwtype(adapter);
1241
1242         if (adapter->fw_type == NX_FLASH_ROMIMAGE) {
1243                 adapter->fw = NULL;
1244         } else {
1245                 rc = request_firmware(&adapter->fw,
1246                                 fw_name[adapter->fw_type], &pdev->dev);
1247                 if (rc != 0)
1248                         goto next;
1249
1250                 rc = netxen_validate_firmware(adapter);
1251                 if (rc != 0) {
1252                         release_firmware(adapter->fw);
1253                         msleep(1);
1254                         goto next;
1255                 }
1256         }
1257 }
1258
1259
1260 void
1261 netxen_release_firmware(struct netxen_adapter *adapter)
1262 {
1263         release_firmware(adapter->fw);
1264         adapter->fw = NULL;
1265 }
1266
1267 int netxen_init_dummy_dma(struct netxen_adapter *adapter)
1268 {
1269         u64 addr;
1270         u32 hi, lo;
1271
1272         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1273                 return 0;
1274
1275         adapter->dummy_dma.addr = pci_alloc_consistent(adapter->pdev,
1276                                  NETXEN_HOST_DUMMY_DMA_SIZE,
1277                                  &adapter->dummy_dma.phys_addr);
1278         if (adapter->dummy_dma.addr == NULL) {
1279                 dev_err(&adapter->pdev->dev,
1280                         "ERROR: Could not allocate dummy DMA memory\n");
1281                 return -ENOMEM;
1282         }
1283
1284         addr = (uint64_t) adapter->dummy_dma.phys_addr;
1285         hi = (addr >> 32) & 0xffffffff;
1286         lo = addr & 0xffffffff;
1287
1288         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
1289         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
1290
1291         return 0;
1292 }
1293
1294 /*
1295  * NetXen DMA watchdog control:
1296  *
1297  *      Bit 0           : enabled => R/O: 1 watchdog active, 0 inactive
1298  *      Bit 1           : disable_request => 1 req disable dma watchdog
1299  *      Bit 2           : enable_request =>  1 req enable dma watchdog
1300  *      Bit 3-31        : unused
1301  */
1302 void netxen_free_dummy_dma(struct netxen_adapter *adapter)
1303 {
1304         int i = 100;
1305         u32 ctrl;
1306
1307         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1308                 return;
1309
1310         if (!adapter->dummy_dma.addr)
1311                 return;
1312
1313         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1314         if ((ctrl & 0x1) != 0) {
1315                 NXWR32(adapter, NETXEN_DMA_WATCHDOG_CTRL, (ctrl | 0x2));
1316
1317                 while ((ctrl & 0x1) != 0) {
1318
1319                         msleep(50);
1320
1321                         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1322
1323                         if (--i == 0)
1324                                 break;
1325                 }
1326         }
1327
1328         if (i) {
1329                 pci_free_consistent(adapter->pdev,
1330                             NETXEN_HOST_DUMMY_DMA_SIZE,
1331                             adapter->dummy_dma.addr,
1332                             adapter->dummy_dma.phys_addr);
1333                 adapter->dummy_dma.addr = NULL;
1334         } else
1335                 dev_err(&adapter->pdev->dev, "dma_watchdog_shutdown failed\n");
1336 }
1337
1338 int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
1339 {
1340         u32 val = 0;
1341         int retries = 60;
1342
1343         if (pegtune_val)
1344                 return 0;
1345
1346         do {
1347                 val = NXRD32(adapter, CRB_CMDPEG_STATE);
1348                 switch (val) {
1349                 case PHAN_INITIALIZE_COMPLETE:
1350                 case PHAN_INITIALIZE_ACK:
1351                         return 0;
1352                 case PHAN_INITIALIZE_FAILED:
1353                         goto out_err;
1354                 default:
1355                         break;
1356                 }
1357
1358                 msleep(500);
1359
1360         } while (--retries);
1361
1362         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
1363
1364 out_err:
1365         dev_warn(&adapter->pdev->dev, "firmware init failed\n");
1366         return -EIO;
1367 }
1368
1369 static int
1370 netxen_receive_peg_ready(struct netxen_adapter *adapter)
1371 {
1372         u32 val = 0;
1373         int retries = 2000;
1374
1375         do {
1376                 val = NXRD32(adapter, CRB_RCVPEG_STATE);
1377
1378                 if (val == PHAN_PEG_RCV_INITIALIZED)
1379                         return 0;
1380
1381                 msleep(10);
1382
1383         } while (--retries);
1384
1385         if (!retries) {
1386                 printk(KERN_ERR "Receive Peg initialization not "
1387                               "complete, state: 0x%x.\n", val);
1388                 return -EIO;
1389         }
1390
1391         return 0;
1392 }
1393
1394 int netxen_init_firmware(struct netxen_adapter *adapter)
1395 {
1396         int err;
1397
1398         err = netxen_receive_peg_ready(adapter);
1399         if (err)
1400                 return err;
1401
1402         NXWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
1403         NXWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
1404         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
1405
1406         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1407                 NXWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
1408
1409         return err;
1410 }
1411
1412 static void
1413 netxen_handle_linkevent(struct netxen_adapter *adapter, nx_fw_msg_t *msg)
1414 {
1415         u32 cable_OUI;
1416         u16 cable_len;
1417         u16 link_speed;
1418         u8  link_status, module, duplex, autoneg;
1419         struct net_device *netdev = adapter->netdev;
1420
1421         adapter->has_link_events = 1;
1422
1423         cable_OUI = msg->body[1] & 0xffffffff;
1424         cable_len = (msg->body[1] >> 32) & 0xffff;
1425         link_speed = (msg->body[1] >> 48) & 0xffff;
1426
1427         link_status = msg->body[2] & 0xff;
1428         duplex = (msg->body[2] >> 16) & 0xff;
1429         autoneg = (msg->body[2] >> 24) & 0xff;
1430
1431         module = (msg->body[2] >> 8) & 0xff;
1432         if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) {
1433                 printk(KERN_INFO "%s: unsupported cable: OUI 0x%x, length %d\n",
1434                                 netdev->name, cable_OUI, cable_len);
1435         } else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) {
1436                 printk(KERN_INFO "%s: unsupported cable length %d\n",
1437                                 netdev->name, cable_len);
1438         }
1439
1440         /* update link parameters */
1441         if (duplex == LINKEVENT_FULL_DUPLEX)
1442                 adapter->link_duplex = DUPLEX_FULL;
1443         else
1444                 adapter->link_duplex = DUPLEX_HALF;
1445         adapter->module_type = module;
1446         adapter->link_autoneg = autoneg;
1447         adapter->link_speed = link_speed;
1448
1449         netxen_advert_link_change(adapter, link_status);
1450 }
1451
1452 static void
1453 netxen_handle_fw_message(int desc_cnt, int index,
1454                 struct nx_host_sds_ring *sds_ring)
1455 {
1456         nx_fw_msg_t msg;
1457         struct status_desc *desc;
1458         int i = 0, opcode;
1459
1460         while (desc_cnt > 0 && i < 8) {
1461                 desc = &sds_ring->desc_head[index];
1462                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1463                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1464
1465                 index = get_next_index(index, sds_ring->num_desc);
1466                 desc_cnt--;
1467         }
1468
1469         opcode = netxen_get_nic_msg_opcode(msg.body[0]);
1470         switch (opcode) {
1471         case NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1472                 netxen_handle_linkevent(sds_ring->adapter, &msg);
1473                 break;
1474         default:
1475                 break;
1476         }
1477 }
1478
1479 static int
1480 netxen_alloc_rx_skb(struct netxen_adapter *adapter,
1481                 struct nx_host_rds_ring *rds_ring,
1482                 struct netxen_rx_buffer *buffer)
1483 {
1484         struct sk_buff *skb;
1485         dma_addr_t dma;
1486         struct pci_dev *pdev = adapter->pdev;
1487
1488         buffer->skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size);
1489         if (!buffer->skb)
1490                 return 1;
1491
1492         skb = buffer->skb;
1493
1494         if (!adapter->ahw.cut_through)
1495                 skb_reserve(skb, 2);
1496
1497         dma = pci_map_single(pdev, skb->data,
1498                         rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1499
1500         if (pci_dma_mapping_error(pdev, dma)) {
1501                 dev_kfree_skb_any(skb);
1502                 buffer->skb = NULL;
1503                 return 1;
1504         }
1505
1506         buffer->skb = skb;
1507         buffer->dma = dma;
1508         buffer->state = NETXEN_BUFFER_BUSY;
1509
1510         return 0;
1511 }
1512
1513 static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
1514                 struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
1515 {
1516         struct netxen_rx_buffer *buffer;
1517         struct sk_buff *skb;
1518
1519         buffer = &rds_ring->rx_buf_arr[index];
1520
1521         pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
1522                         PCI_DMA_FROMDEVICE);
1523
1524         skb = buffer->skb;
1525         if (!skb)
1526                 goto no_skb;
1527
1528         if (likely((adapter->netdev->features & NETIF_F_RXCSUM)
1529             && cksum == STATUS_CKSUM_OK)) {
1530                 adapter->stats.csummed++;
1531                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1532         } else
1533                 skb->ip_summed = CHECKSUM_NONE;
1534
1535         buffer->skb = NULL;
1536 no_skb:
1537         buffer->state = NETXEN_BUFFER_FREE;
1538         return skb;
1539 }
1540
1541 static struct netxen_rx_buffer *
1542 netxen_process_rcv(struct netxen_adapter *adapter,
1543                 struct nx_host_sds_ring *sds_ring,
1544                 int ring, u64 sts_data0)
1545 {
1546         struct net_device *netdev = adapter->netdev;
1547         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1548         struct netxen_rx_buffer *buffer;
1549         struct sk_buff *skb;
1550         struct nx_host_rds_ring *rds_ring;
1551         int index, length, cksum, pkt_offset;
1552
1553         if (unlikely(ring >= adapter->max_rds_rings))
1554                 return NULL;
1555
1556         rds_ring = &recv_ctx->rds_rings[ring];
1557
1558         index = netxen_get_sts_refhandle(sts_data0);
1559         if (unlikely(index >= rds_ring->num_desc))
1560                 return NULL;
1561
1562         buffer = &rds_ring->rx_buf_arr[index];
1563
1564         length = netxen_get_sts_totallength(sts_data0);
1565         cksum  = netxen_get_sts_status(sts_data0);
1566         pkt_offset = netxen_get_sts_pkt_offset(sts_data0);
1567
1568         skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
1569         if (!skb)
1570                 return buffer;
1571
1572         if (length > rds_ring->skb_size)
1573                 skb_put(skb, rds_ring->skb_size);
1574         else
1575                 skb_put(skb, length);
1576
1577
1578         if (pkt_offset)
1579                 skb_pull(skb, pkt_offset);
1580
1581         skb->protocol = eth_type_trans(skb, netdev);
1582
1583         napi_gro_receive(&sds_ring->napi, skb);
1584
1585         adapter->stats.rx_pkts++;
1586         adapter->stats.rxbytes += length;
1587
1588         return buffer;
1589 }
1590
1591 #define TCP_HDR_SIZE            20
1592 #define TCP_TS_OPTION_SIZE      12
1593 #define TCP_TS_HDR_SIZE         (TCP_HDR_SIZE + TCP_TS_OPTION_SIZE)
1594
1595 static struct netxen_rx_buffer *
1596 netxen_process_lro(struct netxen_adapter *adapter,
1597                 struct nx_host_sds_ring *sds_ring,
1598                 int ring, u64 sts_data0, u64 sts_data1)
1599 {
1600         struct net_device *netdev = adapter->netdev;
1601         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1602         struct netxen_rx_buffer *buffer;
1603         struct sk_buff *skb;
1604         struct nx_host_rds_ring *rds_ring;
1605         struct iphdr *iph;
1606         struct tcphdr *th;
1607         bool push, timestamp;
1608         int l2_hdr_offset, l4_hdr_offset;
1609         int index;
1610         u16 lro_length, length, data_offset;
1611         u32 seq_number;
1612         u8 vhdr_len = 0;
1613
1614         if (unlikely(ring > adapter->max_rds_rings))
1615                 return NULL;
1616
1617         rds_ring = &recv_ctx->rds_rings[ring];
1618
1619         index = netxen_get_lro_sts_refhandle(sts_data0);
1620         if (unlikely(index > rds_ring->num_desc))
1621                 return NULL;
1622
1623         buffer = &rds_ring->rx_buf_arr[index];
1624
1625         timestamp = netxen_get_lro_sts_timestamp(sts_data0);
1626         lro_length = netxen_get_lro_sts_length(sts_data0);
1627         l2_hdr_offset = netxen_get_lro_sts_l2_hdr_offset(sts_data0);
1628         l4_hdr_offset = netxen_get_lro_sts_l4_hdr_offset(sts_data0);
1629         push = netxen_get_lro_sts_push_flag(sts_data0);
1630         seq_number = netxen_get_lro_sts_seq_number(sts_data1);
1631
1632         skb = netxen_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1633         if (!skb)
1634                 return buffer;
1635
1636         if (timestamp)
1637                 data_offset = l4_hdr_offset + TCP_TS_HDR_SIZE;
1638         else
1639                 data_offset = l4_hdr_offset + TCP_HDR_SIZE;
1640
1641         skb_put(skb, lro_length + data_offset);
1642
1643         skb_pull(skb, l2_hdr_offset);
1644         skb->protocol = eth_type_trans(skb, netdev);
1645
1646         if (skb->protocol == htons(ETH_P_8021Q))
1647                 vhdr_len = VLAN_HLEN;
1648         iph = (struct iphdr *)(skb->data + vhdr_len);
1649         th = (struct tcphdr *)((skb->data + vhdr_len) + (iph->ihl << 2));
1650
1651         length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1652         iph->tot_len = htons(length);
1653         iph->check = 0;
1654         iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
1655         th->psh = push;
1656         th->seq = htonl(seq_number);
1657
1658         length = skb->len;
1659
1660         if (adapter->flags & NETXEN_FW_MSS_CAP)
1661                 skb_shinfo(skb)->gso_size  =  netxen_get_lro_sts_mss(sts_data1);
1662
1663         netif_receive_skb(skb);
1664
1665         adapter->stats.lro_pkts++;
1666         adapter->stats.rxbytes += length;
1667
1668         return buffer;
1669 }
1670
1671 #define netxen_merge_rx_buffers(list, head) \
1672         do { list_splice_tail_init(list, head); } while (0);
1673
1674 int
1675 netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
1676 {
1677         struct netxen_adapter *adapter = sds_ring->adapter;
1678
1679         struct list_head *cur;
1680
1681         struct status_desc *desc;
1682         struct netxen_rx_buffer *rxbuf;
1683
1684         u32 consumer = sds_ring->consumer;
1685
1686         int count = 0;
1687         u64 sts_data0, sts_data1;
1688         int opcode, ring = 0, desc_cnt;
1689
1690         while (count < max) {
1691                 desc = &sds_ring->desc_head[consumer];
1692                 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1693
1694                 if (!(sts_data0 & STATUS_OWNER_HOST))
1695                         break;
1696
1697                 desc_cnt = netxen_get_sts_desc_cnt(sts_data0);
1698
1699                 opcode = netxen_get_sts_opcode(sts_data0);
1700
1701                 switch (opcode) {
1702                 case NETXEN_NIC_RXPKT_DESC:
1703                 case NETXEN_OLD_RXPKT_DESC:
1704                 case NETXEN_NIC_SYN_OFFLOAD:
1705                         ring = netxen_get_sts_type(sts_data0);
1706                         rxbuf = netxen_process_rcv(adapter, sds_ring,
1707                                         ring, sts_data0);
1708                         break;
1709                 case NETXEN_NIC_LRO_DESC:
1710                         ring = netxen_get_lro_sts_type(sts_data0);
1711                         sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1712                         rxbuf = netxen_process_lro(adapter, sds_ring,
1713                                         ring, sts_data0, sts_data1);
1714                         break;
1715                 case NETXEN_NIC_RESPONSE_DESC:
1716                         netxen_handle_fw_message(desc_cnt, consumer, sds_ring);
1717                 default:
1718                         goto skip;
1719                 }
1720
1721                 WARN_ON(desc_cnt > 1);
1722
1723                 if (rxbuf)
1724                         list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1725
1726 skip:
1727                 for (; desc_cnt > 0; desc_cnt--) {
1728                         desc = &sds_ring->desc_head[consumer];
1729                         desc->status_desc_data[0] =
1730                                 cpu_to_le64(STATUS_OWNER_PHANTOM);
1731                         consumer = get_next_index(consumer, sds_ring->num_desc);
1732                 }
1733                 count++;
1734         }
1735
1736         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1737                 struct nx_host_rds_ring *rds_ring =
1738                         &adapter->recv_ctx.rds_rings[ring];
1739
1740                 if (!list_empty(&sds_ring->free_list[ring])) {
1741                         list_for_each(cur, &sds_ring->free_list[ring]) {
1742                                 rxbuf = list_entry(cur,
1743                                                 struct netxen_rx_buffer, list);
1744                                 netxen_alloc_rx_skb(adapter, rds_ring, rxbuf);
1745                         }
1746                         spin_lock(&rds_ring->lock);
1747                         netxen_merge_rx_buffers(&sds_ring->free_list[ring],
1748                                                 &rds_ring->free_list);
1749                         spin_unlock(&rds_ring->lock);
1750                 }
1751
1752                 netxen_post_rx_buffers_nodb(adapter, rds_ring);
1753         }
1754
1755         if (count) {
1756                 sds_ring->consumer = consumer;
1757                 NXWRIO(adapter, sds_ring->crb_sts_consumer, consumer);
1758         }
1759
1760         return count;
1761 }
1762
1763 /* Process Command status ring */
1764 int netxen_process_cmd_ring(struct netxen_adapter *adapter)
1765 {
1766         u32 sw_consumer, hw_consumer;
1767         int count = 0, i;
1768         struct netxen_cmd_buffer *buffer;
1769         struct pci_dev *pdev = adapter->pdev;
1770         struct net_device *netdev = adapter->netdev;
1771         struct netxen_skb_frag *frag;
1772         int done = 0;
1773         struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1774
1775         if (!spin_trylock(&adapter->tx_clean_lock))
1776                 return 1;
1777
1778         sw_consumer = tx_ring->sw_consumer;
1779         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1780
1781         while (sw_consumer != hw_consumer) {
1782                 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1783                 if (buffer->skb) {
1784                         frag = &buffer->frag_array[0];
1785                         pci_unmap_single(pdev, frag->dma, frag->length,
1786                                          PCI_DMA_TODEVICE);
1787                         frag->dma = 0ULL;
1788                         for (i = 1; i < buffer->frag_count; i++) {
1789                                 frag++; /* Get the next frag */
1790                                 pci_unmap_page(pdev, frag->dma, frag->length,
1791                                                PCI_DMA_TODEVICE);
1792                                 frag->dma = 0ULL;
1793                         }
1794
1795                         adapter->stats.xmitfinished++;
1796                         dev_kfree_skb_any(buffer->skb);
1797                         buffer->skb = NULL;
1798                 }
1799
1800                 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1801                 if (++count >= MAX_STATUS_HANDLE)
1802                         break;
1803         }
1804
1805         if (count && netif_running(netdev)) {
1806                 tx_ring->sw_consumer = sw_consumer;
1807
1808                 smp_mb();
1809
1810                 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev))
1811                         if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
1812                                 netif_wake_queue(netdev);
1813                 adapter->tx_timeo_cnt = 0;
1814         }
1815         /*
1816          * If everything is freed up to consumer then check if the ring is full
1817          * If the ring is full then check if more needs to be freed and
1818          * schedule the call back again.
1819          *
1820          * This happens when there are 2 CPUs. One could be freeing and the
1821          * other filling it. If the ring is full when we get out of here and
1822          * the card has already interrupted the host then the host can miss the
1823          * interrupt.
1824          *
1825          * There is still a possible race condition and the host could miss an
1826          * interrupt. The card has to take care of this.
1827          */
1828         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1829         done = (sw_consumer == hw_consumer);
1830         spin_unlock(&adapter->tx_clean_lock);
1831
1832         return done;
1833 }
1834
1835 void
1836 netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
1837         struct nx_host_rds_ring *rds_ring)
1838 {
1839         struct rcv_desc *pdesc;
1840         struct netxen_rx_buffer *buffer;
1841         int producer, count = 0;
1842         netxen_ctx_msg msg = 0;
1843         struct list_head *head;
1844
1845         producer = rds_ring->producer;
1846
1847         head = &rds_ring->free_list;
1848         while (!list_empty(head)) {
1849
1850                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1851
1852                 if (!buffer->skb) {
1853                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1854                                 break;
1855                 }
1856
1857                 count++;
1858                 list_del(&buffer->list);
1859
1860                 /* make a rcv descriptor  */
1861                 pdesc = &rds_ring->desc_head[producer];
1862                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1863                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1864                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1865
1866                 producer = get_next_index(producer, rds_ring->num_desc);
1867         }
1868
1869         if (count) {
1870                 rds_ring->producer = producer;
1871                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1872                                 (producer-1) & (rds_ring->num_desc-1));
1873
1874                 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1875                         /*
1876                          * Write a doorbell msg to tell phanmon of change in
1877                          * receive ring producer
1878                          * Only for firmware version < 4.0.0
1879                          */
1880                         netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
1881                         netxen_set_msg_privid(msg);
1882                         netxen_set_msg_count(msg,
1883                                              ((producer - 1) &
1884                                               (rds_ring->num_desc - 1)));
1885                         netxen_set_msg_ctxid(msg, adapter->portnum);
1886                         netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
1887                         NXWRIO(adapter, DB_NORMALIZE(adapter,
1888                                         NETXEN_RCV_PRODUCER_OFFSET), msg);
1889                 }
1890         }
1891 }
1892
1893 static void
1894 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
1895                 struct nx_host_rds_ring *rds_ring)
1896 {
1897         struct rcv_desc *pdesc;
1898         struct netxen_rx_buffer *buffer;
1899         int producer, count = 0;
1900         struct list_head *head;
1901
1902         if (!spin_trylock(&rds_ring->lock))
1903                 return;
1904
1905         producer = rds_ring->producer;
1906
1907         head = &rds_ring->free_list;
1908         while (!list_empty(head)) {
1909
1910                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1911
1912                 if (!buffer->skb) {
1913                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1914                                 break;
1915                 }
1916
1917                 count++;
1918                 list_del(&buffer->list);
1919
1920                 /* make a rcv descriptor  */
1921                 pdesc = &rds_ring->desc_head[producer];
1922                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1923                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1924                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1925
1926                 producer = get_next_index(producer, rds_ring->num_desc);
1927         }
1928
1929         if (count) {
1930                 rds_ring->producer = producer;
1931                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1932                                 (producer - 1) & (rds_ring->num_desc - 1));
1933         }
1934         spin_unlock(&rds_ring->lock);
1935 }
1936
1937 void netxen_nic_clear_stats(struct netxen_adapter *adapter)
1938 {
1939         memset(&adapter->stats, 0, sizeof(adapter->stats));
1940 }
1941