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 = 0; 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                         printk(KERN_ERR "%s: Failed to allocate "
 285                                 "rx buffer ring %d\n",
 286                                 netdev->name, ring);
 287                         /* free whatever was already allocated */
 288                         goto err_out;
 289                 }
 290                 INIT_LIST_HEAD(&rds_ring->free_list);
 291                 /*
 292                  * Now go through all of them, set reference handles
 293                  * and put them in the queues.
 294                  */
 295                 rx_buf = rds_ring->rx_buf_arr;
 296                 for (i = 0; i < rds_ring->num_desc; i++) {
 297                         list_add_tail(&rx_buf->list,
 298                                         &rds_ring->free_list);
 299                         rx_buf->ref_handle = i;
 300                         rx_buf->state = NETXEN_BUFFER_FREE;
 301                         rx_buf++;
 302                 }
 303                 spin_lock_init(&rds_ring->lock);
 304         }
 305
 306         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 307                 sds_ring = &recv_ctx->sds_rings[ring];
 308                 sds_ring->irq = adapter->msix_entries[ring].vector;
 309                 sds_ring->adapter = adapter;
 310                 sds_ring->num_desc = adapter->num_rxd;
 311
 312                 for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
 313                         INIT_LIST_HEAD(&sds_ring->free_list[i]);
 314         }
 315
 316         return 0;
 317
 318 err_out:
 319         netxen_free_sw_resources(adapter);
 320         return -ENOMEM;
 321 }
 322
 323 /*
 324  * netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
 325  * address to external PCI CRB address.
 326  */
 327 static u32 netxen_decode_crb_addr(u32 addr)
 328 {
 329         int i;
 330         u32 base_addr, offset, pci_base;
 331
 332         crb_addr_transform_setup();
 333
 334         pci_base = NETXEN_ADDR_ERROR;
 335         base_addr = addr & 0xfff00000;
 336         offset = addr & 0x000fffff;
 337
 338         for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
 339                 if (crb_addr_xform[i] == base_addr) {
 340                         pci_base = i << 20;
 341                         break;
 342                 }
 343         }
 344         if (pci_base == NETXEN_ADDR_ERROR)
 345                 return pci_base;
 346         else
 347                 return pci_base + offset;
 348 }
 349
 350 #define NETXEN_MAX_ROM_WAIT_USEC        100
 351
 352 static int netxen_wait_rom_done(struct netxen_adapter *adapter)
 353 {
 354         long timeout = 0;
 355         long done = 0;
 356
 357         cond_resched();
 358
 359         while (done == 0) {
 360                 done = NXRD32(adapter, NETXEN_ROMUSB_GLB_STATUS);
 361                 done &= 2;
 362                 if (++timeout >= NETXEN_MAX_ROM_WAIT_USEC) {
 363                         dev_err(&adapter->pdev->dev,
 364                                 "Timeout reached  waiting for rom done");
 365                         return -EIO;
 366                 }
 367                 udelay(1);
 368         }
 369         return 0;
 370 }
 371
 372 static int do_rom_fast_read(struct netxen_adapter *adapter,
 373                             int addr, int *valp)
 374 {
 375         NXWR32(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
 376         NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 377         NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
 378         NXWR32(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
 379         if (netxen_wait_rom_done(adapter)) {
 380                 printk("Error waiting for rom done\n");
 381                 return -EIO;
 382         }
 383         /* reset abyte_cnt and dummy_byte_cnt */
 384         NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
 385         udelay(10);
 386         NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
 387
 388         *valp = NXRD32(adapter, NETXEN_ROMUSB_ROM_RDATA);
 389         return 0;
 390 }
 391
 392 static int do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 393                                   u8 *bytes, size_t size)
 394 {
 395         int addridx;
 396         int ret = 0;
 397
 398         for (addridx = addr; addridx < (addr + size); addridx += 4) {
 399                 int v;
 400                 ret = do_rom_fast_read(adapter, addridx, &v);
 401                 if (ret != 0)
 402                         break;
 403                 *(__le32 *)bytes = cpu_to_le32(v);
 404                 bytes += 4;
 405         }
 406
 407         return ret;
 408 }
 409
 410 int
 411 netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
 412                                 u8 *bytes, size_t size)
 413 {
 414         int ret;
 415
 416         ret = netxen_rom_lock(adapter);
 417         if (ret < 0)
 418                 return ret;
 419
 420         ret = do_rom_fast_read_words(adapter, addr, bytes, size);
 421
 422         netxen_rom_unlock(adapter);
 423         return ret;
 424 }
 425
 426 int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
 427 {
 428         int ret;
 429
 430         if (netxen_rom_lock(adapter) != 0)
 431                 return -EIO;
 432
 433         ret = do_rom_fast_read(adapter, addr, valp);
 434         netxen_rom_unlock(adapter);
 435         return ret;
 436 }
 437
 438 #define NETXEN_BOARDTYPE                0x4008
 439 #define NETXEN_BOARDNUM                 0x400c
 440 #define NETXEN_CHIPNUM                  0x4010
 441
 442 int netxen_pinit_from_rom(struct netxen_adapter *adapter)
 443 {
 444         int addr, val;
 445         int i, n, init_delay = 0;
 446         struct crb_addr_pair *buf;
 447         unsigned offset;
 448         u32 off;
 449
 450         /* resetall */
 451         netxen_rom_lock(adapter);
 452         NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0xffffffff);
 453         netxen_rom_unlock(adapter);
 454
 455         if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 456                 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 457                         (n != 0xcafecafe) ||
 458                         netxen_rom_fast_read(adapter, 4, &n) != 0) {
 459                         printk(KERN_ERR "%s: ERROR Reading crb_init area: "
 460                                         "n: %08x\n", netxen_nic_driver_name, n);
 461                         return -EIO;
 462                 }
 463                 offset = n & 0xffffU;
 464                 n = (n >> 16) & 0xffffU;
 465         } else {
 466                 if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
 467                         !(n & 0x80000000)) {
 468                         printk(KERN_ERR "%s: ERROR Reading crb_init area: "
 469                                         "n: %08x\n", netxen_nic_driver_name, n);
 470                         return -EIO;
 471                 }
 472                 offset = 1;
 473                 n &= ~0x80000000;
 474         }
 475
 476         if (n >= 1024) {
 477                 printk(KERN_ERR "%s:n=0x%x Error! NetXen card flash not"
 478                        " initialized.\n", __func__, n);
 479                 return -EIO;
 480         }
 481
 482         buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
 483         if (buf == NULL) {
 484                 printk("%s: netxen_pinit_from_rom: Unable to calloc memory.\n",
 485                                 netxen_nic_driver_name);
 486                 return -ENOMEM;
 487         }
 488
 489         for (i = 0; i < n; i++) {
 490                 if (netxen_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
 491                 netxen_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
 492                         kfree(buf);
 493                         return -EIO;
 494                 }
 495
 496                 buf[i].addr = addr;
 497                 buf[i].data = val;
 498
 499         }
 500
 501         for (i = 0; i < n; i++) {
 502
 503                 off = netxen_decode_crb_addr(buf[i].addr);
 504                 if (off == NETXEN_ADDR_ERROR) {
 505                         printk(KERN_ERR"CRB init value out of range %x\n",
 506                                         buf[i].addr);
 507                         continue;
 508                 }
 509                 off += NETXEN_PCI_CRBSPACE;
 510
 511                 if (off & 1)
 512                         continue;
 513
 514                 /* skipping cold reboot MAGIC */
 515                 if (off == NETXEN_CAM_RAM(0x1fc))
 516                         continue;
 517
 518                 if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 519                         if (off == (NETXEN_CRB_I2C0 + 0x1c))
 520                                 continue;
 521                         /* do not reset PCI */
 522                         if (off == (ROMUSB_GLB + 0xbc))
 523                                 continue;
 524                         if (off == (ROMUSB_GLB + 0xa8))
 525                                 continue;
 526                         if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
 527                                 continue;
 528                         if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
 529                                 continue;
 530                         if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
 531                                 continue;
 532                         if ((off & 0x0ff00000) == NETXEN_CRB_DDR_NET)
 533                                 continue;
 534                         if (off == (NETXEN_CRB_PEG_NET_1 + 0x18) &&
 535                                 !NX_IS_REVISION_P3P(adapter->ahw.revision_id))
 536                                 buf[i].data = 0x1020;
 537                         /* skip the function enable register */
 538                         if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION))
 539                                 continue;
 540                         if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION2))
 541                                 continue;
 542                         if ((off & 0x0ff00000) == NETXEN_CRB_SMB)
 543                                 continue;
 544                 }
 545
 546                 init_delay = 1;
 547                 /* After writing this register, HW needs time for CRB */
 548                 /* to quiet down (else crb_window returns 0xffffffff) */
 549                 if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
 550                         init_delay = 1000;
 551                         if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 552                                 /* hold xdma in reset also */
 553                                 buf[i].data = NETXEN_NIC_XDMA_RESET;
 554                                 buf[i].data = 0x8000ff;
 555                         }
 556                 }
 557
 558                 NXWR32(adapter, off, buf[i].data);
 559
 560                 msleep(init_delay);
 561         }
 562         kfree(buf);
 563
 564         /* disable_peg_cache_all */
 565
 566         /* unreset_net_cache */
 567         if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 568                 val = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
 569                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, (val & 0xffffff0f));
 570         }
 571
 572         /* p2dn replyCount */
 573         NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
 574         /* disable_peg_cache 0 */
 575         NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0x4c, 8);
 576         /* disable_peg_cache 1 */
 577         NXWR32(adapter, NETXEN_CRB_PEG_NET_I + 0x4c, 8);
 578
 579         /* peg_clr_all */
 580
 581         /* peg_clr 0 */
 582         NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x8, 0);
 583         NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0xc, 0);
 584         /* peg_clr 1 */
 585         NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0x8, 0);
 586         NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0xc, 0);
 587         /* peg_clr 2 */
 588         NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0x8, 0);
 589         NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0xc, 0);
 590         /* peg_clr 3 */
 591         NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0x8, 0);
 592         NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0xc, 0);
 593         return 0;
 594 }
 595
 596 static struct uni_table_desc *nx_get_table_desc(const u8 *unirom, int section)
 597 {
 598         uint32_t i;
 599         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 600         __le32 entries = cpu_to_le32(directory->num_entries);
 601
 602         for (i = 0; i < entries; i++) {
 603
 604                 __le32 offs = cpu_to_le32(directory->findex) +
 605                                 (i * cpu_to_le32(directory->entry_size));
 606                 __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8));
 607
 608                 if (tab_type == section)
 609                         return (struct uni_table_desc *) &unirom[offs];
 610         }
 611
 612         return NULL;
 613 }
 614
 615 #define QLCNIC_FILEHEADER_SIZE  (14 * 4)
 616
 617 static int
 618 netxen_nic_validate_header(struct netxen_adapter *adapter)
 619  {
 620         const u8 *unirom = adapter->fw->data;
 621         struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0];
 622         u32 fw_file_size = adapter->fw->size;
 623         u32 tab_size;
 624         __le32 entries;
 625         __le32 entry_size;
 626
 627         if (fw_file_size < QLCNIC_FILEHEADER_SIZE)
 628                 return -EINVAL;
 629
 630         entries = cpu_to_le32(directory->num_entries);
 631         entry_size = cpu_to_le32(directory->entry_size);
 632         tab_size = cpu_to_le32(directory->findex) + (entries * entry_size);
 633
 634         if (fw_file_size < tab_size)
 635                 return -EINVAL;
 636
 637         return 0;
 638 }
 639
 640 static int
 641 netxen_nic_validate_bootld(struct netxen_adapter *adapter)
 642 {
 643         struct uni_table_desc *tab_desc;
 644         struct uni_data_desc *descr;
 645         const u8 *unirom = adapter->fw->data;
 646         __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 647                                 NX_UNI_BOOTLD_IDX_OFF));
 648         u32 offs;
 649         u32 tab_size;
 650         u32 data_size;
 651
 652         tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_BOOTLD);
 653
 654         if (!tab_desc)
 655                 return -EINVAL;
 656
 657         tab_size = cpu_to_le32(tab_desc->findex) +
 658                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 659
 660         if (adapter->fw->size < tab_size)
 661                 return -EINVAL;
 662
 663         offs = cpu_to_le32(tab_desc->findex) +
 664                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 665         descr = (struct uni_data_desc *)&unirom[offs];
 666
 667         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 668
 669         if (adapter->fw->size < data_size)
 670                 return -EINVAL;
 671
 672         return 0;
 673 }
 674
 675 static int
 676 netxen_nic_validate_fw(struct netxen_adapter *adapter)
 677 {
 678         struct uni_table_desc *tab_desc;
 679         struct uni_data_desc *descr;
 680         const u8 *unirom = adapter->fw->data;
 681         __le32 idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 682                                 NX_UNI_FIRMWARE_IDX_OFF));
 683         u32 offs;
 684         u32 tab_size;
 685         u32 data_size;
 686
 687         tab_desc = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_FW);
 688
 689         if (!tab_desc)
 690                 return -EINVAL;
 691
 692         tab_size = cpu_to_le32(tab_desc->findex) +
 693                         (cpu_to_le32(tab_desc->entry_size) * (idx + 1));
 694
 695         if (adapter->fw->size < tab_size)
 696                 return -EINVAL;
 697
 698         offs = cpu_to_le32(tab_desc->findex) +
 699                 (cpu_to_le32(tab_desc->entry_size) * (idx));
 700         descr = (struct uni_data_desc *)&unirom[offs];
 701         data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size);
 702
 703         if (adapter->fw->size < data_size)
 704                 return -EINVAL;
 705
 706         return 0;
 707 }
 708
 709
 710 static int
 711 netxen_nic_validate_product_offs(struct netxen_adapter *adapter)
 712 {
 713         struct uni_table_desc *ptab_descr;
 714         const u8 *unirom = adapter->fw->data;
 715         int mn_present = (NX_IS_REVISION_P2(adapter->ahw.revision_id)) ?
 716                         1 : netxen_p3_has_mn(adapter);
 717         __le32 entries;
 718         __le32 entry_size;
 719         u32 tab_size;
 720         u32 i;
 721
 722         ptab_descr = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_PRODUCT_TBL);
 723         if (ptab_descr == NULL)
 724                 return -EINVAL;
 725
 726         entries = cpu_to_le32(ptab_descr->num_entries);
 727         entry_size = cpu_to_le32(ptab_descr->entry_size);
 728         tab_size = cpu_to_le32(ptab_descr->findex) + (entries * entry_size);
 729
 730         if (adapter->fw->size < tab_size)
 731                 return -EINVAL;
 732
 733 nomn:
 734         for (i = 0; i < entries; i++) {
 735
 736                 __le32 flags, file_chiprev, offs;
 737                 u8 chiprev = adapter->ahw.revision_id;
 738                 uint32_t flagbit;
 739
 740                 offs = cpu_to_le32(ptab_descr->findex) +
 741                                 (i * cpu_to_le32(ptab_descr->entry_size));
 742                 flags = cpu_to_le32(*((int *)&unirom[offs] + NX_UNI_FLAGS_OFF));
 743                 file_chiprev = cpu_to_le32(*((int *)&unirom[offs] +
 744                                                         NX_UNI_CHIP_REV_OFF));
 745
 746                 flagbit = mn_present ? 1 : 2;
 747
 748                 if ((chiprev == file_chiprev) &&
 749                                         ((1ULL << flagbit) & flags)) {
 750                         adapter->file_prd_off = offs;
 751                         return 0;
 752                 }
 753         }
 754
 755         if (mn_present && NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
 756                 mn_present = 0;
 757                 goto nomn;
 758         }
 759
 760         return -EINVAL;
 761 }
 762
 763 static int
 764 netxen_nic_validate_unified_romimage(struct netxen_adapter *adapter)
 765 {
 766         if (netxen_nic_validate_header(adapter)) {
 767                 dev_err(&adapter->pdev->dev,
 768                                 "unified image: header validation failed\n");
 769                 return -EINVAL;
 770         }
 771
 772         if (netxen_nic_validate_product_offs(adapter)) {
 773                 dev_err(&adapter->pdev->dev,
 774                                 "unified image: product validation failed\n");
 775                 return -EINVAL;
 776         }
 777
 778         if (netxen_nic_validate_bootld(adapter)) {
 779                 dev_err(&adapter->pdev->dev,
 780                                 "unified image: bootld validation failed\n");
 781                 return -EINVAL;
 782         }
 783
 784         if (netxen_nic_validate_fw(adapter)) {
 785                 dev_err(&adapter->pdev->dev,
 786                                 "unified image: firmware validation failed\n");
 787                 return -EINVAL;
 788         }
 789
 790         return 0;
 791 }
 792
 793 static struct uni_data_desc *nx_get_data_desc(struct netxen_adapter *adapter,
 794                         u32 section, u32 idx_offset)
 795 {
 796         const u8 *unirom = adapter->fw->data;
 797         int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] +
 798                                                                 idx_offset));
 799         struct uni_table_desc *tab_desc;
 800         __le32 offs;
 801
 802         tab_desc = nx_get_table_desc(unirom, section);
 803
 804         if (tab_desc == NULL)
 805                 return NULL;
 806
 807         offs = cpu_to_le32(tab_desc->findex) +
 808                         (cpu_to_le32(tab_desc->entry_size) * idx);
 809
 810         return (struct uni_data_desc *)&unirom[offs];
 811 }
 812
 813 static u8 *
 814 nx_get_bootld_offs(struct netxen_adapter *adapter)
 815 {
 816         u32 offs = NETXEN_BOOTLD_START;
 817
 818         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 819                 offs = cpu_to_le32((nx_get_data_desc(adapter,
 820                                         NX_UNI_DIR_SECT_BOOTLD,
 821                                         NX_UNI_BOOTLD_IDX_OFF))->findex);
 822
 823         return (u8 *)&adapter->fw->data[offs];
 824 }
 825
 826 static u8 *
 827 nx_get_fw_offs(struct netxen_adapter *adapter)
 828 {
 829         u32 offs = NETXEN_IMAGE_START;
 830
 831         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 832                 offs = cpu_to_le32((nx_get_data_desc(adapter,
 833                                         NX_UNI_DIR_SECT_FW,
 834                                         NX_UNI_FIRMWARE_IDX_OFF))->findex);
 835
 836         return (u8 *)&adapter->fw->data[offs];
 837 }
 838
 839 static __le32
 840 nx_get_fw_size(struct netxen_adapter *adapter)
 841 {
 842         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE)
 843                 return cpu_to_le32((nx_get_data_desc(adapter,
 844                                         NX_UNI_DIR_SECT_FW,
 845                                         NX_UNI_FIRMWARE_IDX_OFF))->size);
 846         else
 847                 return cpu_to_le32(
 848                                 *(u32 *)&adapter->fw->data[NX_FW_SIZE_OFFSET]);
 849 }
 850
 851 static __le32
 852 nx_get_fw_version(struct netxen_adapter *adapter)
 853 {
 854         struct uni_data_desc *fw_data_desc;
 855         const struct firmware *fw = adapter->fw;
 856         __le32 major, minor, sub;
 857         const u8 *ver_str;
 858         int i, ret = 0;
 859
 860         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 861
 862                 fw_data_desc = nx_get_data_desc(adapter,
 863                                 NX_UNI_DIR_SECT_FW, NX_UNI_FIRMWARE_IDX_OFF);
 864                 ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) +
 865                                 cpu_to_le32(fw_data_desc->size) - 17;
 866
 867                 for (i = 0; i < 12; i++) {
 868                         if (!strncmp(&ver_str[i], "REV=", 4)) {
 869                                 ret = sscanf(&ver_str[i+4], "%u.%u.%u ",
 870                                                         &major, &minor, &sub);
 871                                 break;
 872                         }
 873                 }
 874
 875                 if (ret != 3)
 876                         return 0;
 877
 878                 return major + (minor << 8) + (sub << 16);
 879
 880         } else
 881                 return cpu_to_le32(*(u32 *)&fw->data[NX_FW_VERSION_OFFSET]);
 882 }
 883
 884 static __le32
 885 nx_get_bios_version(struct netxen_adapter *adapter)
 886 {
 887         const struct firmware *fw = adapter->fw;
 888         __le32 bios_ver, prd_off = adapter->file_prd_off;
 889
 890         if (adapter->fw_type == NX_UNIFIED_ROMIMAGE) {
 891                 bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off])
 892                                                 + NX_UNI_BIOS_VERSION_OFF));
 893                 return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) +
 894                                                         (bios_ver >> 24);
 895         } else
 896                 return cpu_to_le32(*(u32 *)&fw->data[NX_BIOS_VERSION_OFFSET]);
 897
 898 }
 899
 900 int
 901 netxen_need_fw_reset(struct netxen_adapter *adapter)
 902 {
 903         u32 count, old_count;
 904         u32 val, version, major, minor, build;
 905         int i, timeout;
 906         u8 fw_type;
 907
 908         /* NX2031 firmware doesn't support heartbit */
 909         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 910                 return 1;
 911
 912         if (adapter->need_fw_reset)
 913                 return 1;
 914
 915         /* last attempt had failed */
 916         if (NXRD32(adapter, CRB_CMDPEG_STATE) == PHAN_INITIALIZE_FAILED)
 917                 return 1;
 918
 919         old_count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 920
 921         for (i = 0; i < 10; i++) {
 922
 923                 timeout = msleep_interruptible(200);
 924                 if (timeout) {
 925                         NXWR32(adapter, CRB_CMDPEG_STATE,
 926                                         PHAN_INITIALIZE_FAILED);
 927                         return -EINTR;
 928                 }
 929
 930                 count = NXRD32(adapter, NETXEN_PEG_ALIVE_COUNTER);
 931                 if (count != old_count)
 932                         break;
 933         }
 934
 935         /* firmware is dead */
 936         if (count == old_count)
 937                 return 1;
 938
 939         /* check if we have got newer or different file firmware */
 940         if (adapter->fw) {
 941
 942                 val = nx_get_fw_version(adapter);
 943
 944                 version = NETXEN_DECODE_VERSION(val);
 945
 946                 major = NXRD32(adapter, NETXEN_FW_VERSION_MAJOR);
 947                 minor = NXRD32(adapter, NETXEN_FW_VERSION_MINOR);
 948                 build = NXRD32(adapter, NETXEN_FW_VERSION_SUB);
 949
 950                 if (version > NETXEN_VERSION_CODE(major, minor, build))
 951                         return 1;
 952
 953                 if (version == NETXEN_VERSION_CODE(major, minor, build) &&
 954                         adapter->fw_type != NX_UNIFIED_ROMIMAGE) {
 955
 956                         val = NXRD32(adapter, NETXEN_MIU_MN_CONTROL);
 957                         fw_type = (val & 0x4) ?
 958                                 NX_P3_CT_ROMIMAGE : NX_P3_MN_ROMIMAGE;
 959
 960                         if (adapter->fw_type != fw_type)
 961                                 return 1;
 962                 }
 963         }
 964
 965         return 0;
 966 }
 967
 968 #define NETXEN_MIN_P3_FW_SUPP   NETXEN_VERSION_CODE(4, 0, 505)
 969
 970 int
 971 netxen_check_flash_fw_compatibility(struct netxen_adapter *adapter)
 972 {
 973         u32 flash_fw_ver, min_fw_ver;
 974
 975         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
 976                 return 0;
 977
 978         if (netxen_rom_fast_read(adapter,
 979                         NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
 980                 dev_err(&adapter->pdev->dev, "Unable to read flash fw"
 981                         "version\n");
 982                 return -EIO;
 983         }
 984
 985         flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
 986         min_fw_ver = NETXEN_MIN_P3_FW_SUPP;
 987         if (flash_fw_ver >= min_fw_ver)
 988                 return 0;
 989
 990         dev_info(&adapter->pdev->dev, "Flash fw[%d.%d.%d] is < min fw supported"
 991                 "[4.0.505]. Please update firmware on flash\n",
 992                 _major(flash_fw_ver), _minor(flash_fw_ver),
 993                 _build(flash_fw_ver));
 994         return -EINVAL;
 995 }
 996
 997 static char *fw_name[] = {
 998         NX_P2_MN_ROMIMAGE_NAME,
 999         NX_P3_CT_ROMIMAGE_NAME,
1000         NX_P3_MN_ROMIMAGE_NAME,
1001         NX_UNIFIED_ROMIMAGE_NAME,
1002         NX_FLASH_ROMIMAGE_NAME,
1003 };
1004
1005 int
1006 netxen_load_firmware(struct netxen_adapter *adapter)
1007 {
1008         u64 *ptr64;
1009         u32 i, flashaddr, size;
1010         const struct firmware *fw = adapter->fw;
1011         struct pci_dev *pdev = adapter->pdev;
1012
1013         dev_info(&pdev->dev, "loading firmware from %s\n",
1014                         fw_name[adapter->fw_type]);
1015
1016         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1017                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 1);
1018
1019         if (fw) {
1020                 __le64 data;
1021
1022                 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
1023
1024                 ptr64 = (u64 *)nx_get_bootld_offs(adapter);
1025                 flashaddr = NETXEN_BOOTLD_START;
1026
1027                 for (i = 0; i < size; i++) {
1028                         data = cpu_to_le64(ptr64[i]);
1029
1030                         if (adapter->pci_mem_write(adapter, flashaddr, data))
1031                                 return -EIO;
1032
1033                         flashaddr += 8;
1034                 }
1035
1036                 size = (__force u32)nx_get_fw_size(adapter) / 8;
1037
1038                 ptr64 = (u64 *)nx_get_fw_offs(adapter);
1039                 flashaddr = NETXEN_IMAGE_START;
1040
1041                 for (i = 0; i < size; i++) {
1042                         data = cpu_to_le64(ptr64[i]);
1043
1044                         if (adapter->pci_mem_write(adapter,
1045                                                 flashaddr, data))
1046                                 return -EIO;
1047
1048                         flashaddr += 8;
1049                 }
1050
1051                 size = (__force u32)nx_get_fw_size(adapter) % 8;
1052                 if (size) {
1053                         data = cpu_to_le64(ptr64[i]);
1054
1055                         if (adapter->pci_mem_write(adapter,
1056                                                 flashaddr, data))
1057                                 return -EIO;
1058                 }
1059
1060         } else {
1061                 u64 data;
1062                 u32 hi, lo;
1063
1064                 size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;
1065                 flashaddr = NETXEN_BOOTLD_START;
1066
1067                 for (i = 0; i < size; i++) {
1068                         if (netxen_rom_fast_read(adapter,
1069                                         flashaddr, (int *)&lo) != 0)
1070                                 return -EIO;
1071                         if (netxen_rom_fast_read(adapter,
1072                                         flashaddr + 4, (int *)&hi) != 0)
1073                                 return -EIO;
1074
1075                         /* hi, lo are already in host endian byteorder */
1076                         data = (((u64)hi << 32) | lo);
1077
1078                         if (adapter->pci_mem_write(adapter,
1079                                                 flashaddr, data))
1080                                 return -EIO;
1081
1082                         flashaddr += 8;
1083                 }
1084         }
1085         msleep(1);
1086
1087         if (NX_IS_REVISION_P3P(adapter->ahw.revision_id)) {
1088                 NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x18, 0x1020);
1089                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001e);
1090         } else if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1091                 NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001d);
1092         else {
1093                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CHIP_CLK_CTRL, 0x3fff);
1094                 NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 0);
1095         }
1096
1097         return 0;
1098 }
1099
1100 static int
1101 netxen_validate_firmware(struct netxen_adapter *adapter)
1102 {
1103         __le32 val;
1104         __le32 flash_fw_ver;
1105         u32 file_fw_ver, min_ver, bios;
1106         struct pci_dev *pdev = adapter->pdev;
1107         const struct firmware *fw = adapter->fw;
1108         u8 fw_type = adapter->fw_type;
1109         u32 crbinit_fix_fw;
1110
1111         if (fw_type == NX_UNIFIED_ROMIMAGE) {
1112                 if (netxen_nic_validate_unified_romimage(adapter))
1113                         return -EINVAL;
1114         } else {
1115                 val = cpu_to_le32(*(u32 *)&fw->data[NX_FW_MAGIC_OFFSET]);
1116                 if ((__force u32)val != NETXEN_BDINFO_MAGIC)
1117                         return -EINVAL;
1118
1119                 if (fw->size < NX_FW_MIN_SIZE)
1120                         return -EINVAL;
1121         }
1122
1123         val = nx_get_fw_version(adapter);
1124
1125         if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1126                 min_ver = NETXEN_MIN_P3_FW_SUPP;
1127         else
1128                 min_ver = NETXEN_VERSION_CODE(3, 4, 216);
1129
1130         file_fw_ver = NETXEN_DECODE_VERSION(val);
1131
1132         if ((_major(file_fw_ver) > _NETXEN_NIC_LINUX_MAJOR) ||
1133             (file_fw_ver < min_ver)) {
1134                 dev_err(&pdev->dev,
1135                                 "%s: firmware version %d.%d.%d unsupported\n",
1136                 fw_name[fw_type], _major(file_fw_ver), _minor(file_fw_ver),
1137                  _build(file_fw_ver));
1138                 return -EINVAL;
1139         }
1140
1141         val = nx_get_bios_version(adapter);
1142         netxen_rom_fast_read(adapter, NX_BIOS_VERSION_OFFSET, (int *)&bios);
1143         if ((__force u32)val != bios) {
1144                 dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
1145                                 fw_name[fw_type]);
1146                 return -EINVAL;
1147         }
1148
1149         if (netxen_rom_fast_read(adapter,
1150                         NX_FW_VERSION_OFFSET, (int *)&flash_fw_ver)) {
1151                 dev_err(&pdev->dev, "Unable to read flash fw version\n");
1152                 return -EIO;
1153         }
1154         flash_fw_ver = NETXEN_DECODE_VERSION(flash_fw_ver);
1155
1156         /* New fw from file is not allowed, if fw on flash is < 4.0.554 */
1157         crbinit_fix_fw = NETXEN_VERSION_CODE(4, 0, 554);
1158         if (file_fw_ver >= crbinit_fix_fw && flash_fw_ver < crbinit_fix_fw &&
1159             NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1160                 dev_err(&pdev->dev, "Incompatibility detected between driver "
1161                         "and firmware version on flash. This configuration "
1162                         "is not recommended. Please update the firmware on "
1163                         "flash immediately\n");
1164                 return -EINVAL;
1165         }
1166
1167         /* check if flashed firmware is newer only for no-mn and P2 case*/
1168         if (!netxen_p3_has_mn(adapter) ||
1169             NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1170                 if (flash_fw_ver > file_fw_ver) {
1171                         dev_info(&pdev->dev, "%s: firmware is older than flash\n",
1172                                 fw_name[fw_type]);
1173                         return -EINVAL;
1174                 }
1175         }
1176
1177         NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
1178         return 0;
1179 }
1180
1181 static void
1182 nx_get_next_fwtype(struct netxen_adapter *adapter)
1183 {
1184         u8 fw_type;
1185
1186         switch (adapter->fw_type) {
1187         case NX_UNKNOWN_ROMIMAGE:
1188                 fw_type = NX_UNIFIED_ROMIMAGE;
1189                 break;
1190
1191         case NX_UNIFIED_ROMIMAGE:
1192                 if (NX_IS_REVISION_P3P(adapter->ahw.revision_id))
1193                         fw_type = NX_FLASH_ROMIMAGE;
1194                 else if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1195                         fw_type = NX_P2_MN_ROMIMAGE;
1196                 else if (netxen_p3_has_mn(adapter))
1197                         fw_type = NX_P3_MN_ROMIMAGE;
1198                 else
1199                         fw_type = NX_P3_CT_ROMIMAGE;
1200                 break;
1201
1202         case NX_P3_MN_ROMIMAGE:
1203                 fw_type = NX_P3_CT_ROMIMAGE;
1204                 break;
1205
1206         case NX_P2_MN_ROMIMAGE:
1207         case NX_P3_CT_ROMIMAGE:
1208         default:
1209                 fw_type = NX_FLASH_ROMIMAGE;
1210                 break;
1211         }
1212
1213         adapter->fw_type = fw_type;
1214 }
1215
1216 static int
1217 netxen_p3_has_mn(struct netxen_adapter *adapter)
1218 {
1219         u32 capability, flashed_ver;
1220         capability = 0;
1221
1222         /* NX2031 always had MN */
1223         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1224                 return 1;
1225
1226         netxen_rom_fast_read(adapter,
1227                         NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
1228         flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);
1229
1230         if (flashed_ver >= NETXEN_VERSION_CODE(4, 0, 220)) {
1231
1232                 capability = NXRD32(adapter, NX_PEG_TUNE_CAPABILITY);
1233                 if (capability & NX_PEG_TUNE_MN_PRESENT)
1234                         return 1;
1235         }
1236         return 0;
1237 }
1238
1239 void netxen_request_firmware(struct netxen_adapter *adapter)
1240 {
1241         struct pci_dev *pdev = adapter->pdev;
1242         int rc = 0;
1243
1244         adapter->fw_type = NX_UNKNOWN_ROMIMAGE;
1245
1246 next:
1247         nx_get_next_fwtype(adapter);
1248
1249         if (adapter->fw_type == NX_FLASH_ROMIMAGE) {
1250                 adapter->fw = NULL;
1251         } else {
1252                 rc = request_firmware(&adapter->fw,
1253                                 fw_name[adapter->fw_type], &pdev->dev);
1254                 if (rc != 0)
1255                         goto next;
1256
1257                 rc = netxen_validate_firmware(adapter);
1258                 if (rc != 0) {
1259                         release_firmware(adapter->fw);
1260                         msleep(1);
1261                         goto next;
1262                 }
1263         }
1264 }
1265
1266
1267 void
1268 netxen_release_firmware(struct netxen_adapter *adapter)
1269 {
1270         if (adapter->fw)
1271                 release_firmware(adapter->fw);
1272         adapter->fw = NULL;
1273 }
1274
1275 int netxen_init_dummy_dma(struct netxen_adapter *adapter)
1276 {
1277         u64 addr;
1278         u32 hi, lo;
1279
1280         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1281                 return 0;
1282
1283         adapter->dummy_dma.addr = pci_alloc_consistent(adapter->pdev,
1284                                  NETXEN_HOST_DUMMY_DMA_SIZE,
1285                                  &adapter->dummy_dma.phys_addr);
1286         if (adapter->dummy_dma.addr == NULL) {
1287                 dev_err(&adapter->pdev->dev,
1288                         "ERROR: Could not allocate dummy DMA memory\n");
1289                 return -ENOMEM;
1290         }
1291
1292         addr = (uint64_t) adapter->dummy_dma.phys_addr;
1293         hi = (addr >> 32) & 0xffffffff;
1294         lo = addr & 0xffffffff;
1295
1296         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
1297         NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
1298
1299         return 0;
1300 }
1301
1302 /*
1303  * NetXen DMA watchdog control:
1304  *
1305  *      Bit 0           : enabled => R/O: 1 watchdog active, 0 inactive
1306  *      Bit 1           : disable_request => 1 req disable dma watchdog
1307  *      Bit 2           : enable_request =>  1 req enable dma watchdog
1308  *      Bit 3-31        : unused
1309  */
1310 void netxen_free_dummy_dma(struct netxen_adapter *adapter)
1311 {
1312         int i = 100;
1313         u32 ctrl;
1314
1315         if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
1316                 return;
1317
1318         if (!adapter->dummy_dma.addr)
1319                 return;
1320
1321         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1322         if ((ctrl & 0x1) != 0) {
1323                 NXWR32(adapter, NETXEN_DMA_WATCHDOG_CTRL, (ctrl | 0x2));
1324
1325                 while ((ctrl & 0x1) != 0) {
1326
1327                         msleep(50);
1328
1329                         ctrl = NXRD32(adapter, NETXEN_DMA_WATCHDOG_CTRL);
1330
1331                         if (--i == 0)
1332                                 break;
1333                 }
1334         }
1335
1336         if (i) {
1337                 pci_free_consistent(adapter->pdev,
1338                             NETXEN_HOST_DUMMY_DMA_SIZE,
1339                             adapter->dummy_dma.addr,
1340                             adapter->dummy_dma.phys_addr);
1341                 adapter->dummy_dma.addr = NULL;
1342         } else
1343                 dev_err(&adapter->pdev->dev, "dma_watchdog_shutdown failed\n");
1344 }
1345
1346 int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
1347 {
1348         u32 val = 0;
1349         int retries = 60;
1350
1351         if (pegtune_val)
1352                 return 0;
1353
1354         do {
1355                 val = NXRD32(adapter, CRB_CMDPEG_STATE);
1356
1357                 switch (val) {
1358                 case PHAN_INITIALIZE_COMPLETE:
1359                 case PHAN_INITIALIZE_ACK:
1360                         return 0;
1361                 case PHAN_INITIALIZE_FAILED:
1362                         goto out_err;
1363                 default:
1364                         break;
1365                 }
1366
1367                 msleep(500);
1368
1369         } while (--retries);
1370
1371         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED);
1372
1373 out_err:
1374         dev_warn(&adapter->pdev->dev, "firmware init failed\n");
1375         return -EIO;
1376 }
1377
1378 static int
1379 netxen_receive_peg_ready(struct netxen_adapter *adapter)
1380 {
1381         u32 val = 0;
1382         int retries = 2000;
1383
1384         do {
1385                 val = NXRD32(adapter, CRB_RCVPEG_STATE);
1386
1387                 if (val == PHAN_PEG_RCV_INITIALIZED)
1388                         return 0;
1389
1390                 msleep(10);
1391
1392         } while (--retries);
1393
1394         if (!retries) {
1395                 printk(KERN_ERR "Receive Peg initialization not "
1396                               "complete, state: 0x%x.\n", val);
1397                 return -EIO;
1398         }
1399
1400         return 0;
1401 }
1402
1403 int netxen_init_firmware(struct netxen_adapter *adapter)
1404 {
1405         int err;
1406
1407         err = netxen_receive_peg_ready(adapter);
1408         if (err)
1409                 return err;
1410
1411         NXWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
1412         NXWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
1413         NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
1414
1415         if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
1416                 NXWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
1417
1418         return err;
1419 }
1420
1421 static void
1422 netxen_handle_linkevent(struct netxen_adapter *adapter, nx_fw_msg_t *msg)
1423 {
1424         u32 cable_OUI;
1425         u16 cable_len;
1426         u16 link_speed;
1427         u8  link_status, module, duplex, autoneg;
1428         struct net_device *netdev = adapter->netdev;
1429
1430         adapter->has_link_events = 1;
1431
1432         cable_OUI = msg->body[1] & 0xffffffff;
1433         cable_len = (msg->body[1] >> 32) & 0xffff;
1434         link_speed = (msg->body[1] >> 48) & 0xffff;
1435
1436         link_status = msg->body[2] & 0xff;
1437         duplex = (msg->body[2] >> 16) & 0xff;
1438         autoneg = (msg->body[2] >> 24) & 0xff;
1439
1440         module = (msg->body[2] >> 8) & 0xff;
1441         if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) {
1442                 printk(KERN_INFO "%s: unsupported cable: OUI 0x%x, length %d\n",
1443                                 netdev->name, cable_OUI, cable_len);
1444         } else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) {
1445                 printk(KERN_INFO "%s: unsupported cable length %d\n",
1446                                 netdev->name, cable_len);
1447         }
1448
1449         netxen_advert_link_change(adapter, link_status);
1450
1451         /* update link parameters */
1452         if (duplex == LINKEVENT_FULL_DUPLEX)
1453                 adapter->link_duplex = DUPLEX_FULL;
1454         else
1455                 adapter->link_duplex = DUPLEX_HALF;
1456         adapter->module_type = module;
1457         adapter->link_autoneg = autoneg;
1458         adapter->link_speed = link_speed;
1459 }
1460
1461 static void
1462 netxen_handle_fw_message(int desc_cnt, int index,
1463                 struct nx_host_sds_ring *sds_ring)
1464 {
1465         nx_fw_msg_t msg;
1466         struct status_desc *desc;
1467         int i = 0, opcode;
1468
1469         while (desc_cnt > 0 && i < 8) {
1470                 desc = &sds_ring->desc_head[index];
1471                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1472                 msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1473
1474                 index = get_next_index(index, sds_ring->num_desc);
1475                 desc_cnt--;
1476         }
1477
1478         opcode = netxen_get_nic_msg_opcode(msg.body[0]);
1479         switch (opcode) {
1480         case NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1481                 netxen_handle_linkevent(sds_ring->adapter, &msg);
1482                 break;
1483         default:
1484                 break;
1485         }
1486 }
1487
1488 static int
1489 netxen_alloc_rx_skb(struct netxen_adapter *adapter,
1490                 struct nx_host_rds_ring *rds_ring,
1491                 struct netxen_rx_buffer *buffer)
1492 {
1493         struct sk_buff *skb;
1494         dma_addr_t dma;
1495         struct pci_dev *pdev = adapter->pdev;
1496
1497         buffer->skb = dev_alloc_skb(rds_ring->skb_size);
1498         if (!buffer->skb)
1499                 return 1;
1500
1501         skb = buffer->skb;
1502
1503         if (!adapter->ahw.cut_through)
1504                 skb_reserve(skb, 2);
1505
1506         dma = pci_map_single(pdev, skb->data,
1507                         rds_ring->dma_size, PCI_DMA_FROMDEVICE);
1508
1509         if (pci_dma_mapping_error(pdev, dma)) {
1510                 dev_kfree_skb_any(skb);
1511                 buffer->skb = NULL;
1512                 return 1;
1513         }
1514
1515         buffer->skb = skb;
1516         buffer->dma = dma;
1517         buffer->state = NETXEN_BUFFER_BUSY;
1518
1519         return 0;
1520 }
1521
1522 static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
1523                 struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
1524 {
1525         struct netxen_rx_buffer *buffer;
1526         struct sk_buff *skb;
1527
1528         buffer = &rds_ring->rx_buf_arr[index];
1529
1530         pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
1531                         PCI_DMA_FROMDEVICE);
1532
1533         skb = buffer->skb;
1534         if (!skb)
1535                 goto no_skb;
1536
1537         if (likely((adapter->netdev->features & NETIF_F_RXCSUM)
1538             && cksum == STATUS_CKSUM_OK)) {
1539                 adapter->stats.csummed++;
1540                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1541         } else
1542                 skb->ip_summed = CHECKSUM_NONE;
1543
1544         skb->dev = adapter->netdev;
1545
1546         buffer->skb = NULL;
1547 no_skb:
1548         buffer->state = NETXEN_BUFFER_FREE;
1549         return skb;
1550 }
1551
1552 static struct netxen_rx_buffer *
1553 netxen_process_rcv(struct netxen_adapter *adapter,
1554                 struct nx_host_sds_ring *sds_ring,
1555                 int ring, u64 sts_data0)
1556 {
1557         struct net_device *netdev = adapter->netdev;
1558         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1559         struct netxen_rx_buffer *buffer;
1560         struct sk_buff *skb;
1561         struct nx_host_rds_ring *rds_ring;
1562         int index, length, cksum, pkt_offset;
1563
1564         if (unlikely(ring >= adapter->max_rds_rings))
1565                 return NULL;
1566
1567         rds_ring = &recv_ctx->rds_rings[ring];
1568
1569         index = netxen_get_sts_refhandle(sts_data0);
1570         if (unlikely(index >= rds_ring->num_desc))
1571                 return NULL;
1572
1573         buffer = &rds_ring->rx_buf_arr[index];
1574
1575         length = netxen_get_sts_totallength(sts_data0);
1576         cksum  = netxen_get_sts_status(sts_data0);
1577         pkt_offset = netxen_get_sts_pkt_offset(sts_data0);
1578
1579         skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
1580         if (!skb)
1581                 return buffer;
1582
1583         if (length > rds_ring->skb_size)
1584                 skb_put(skb, rds_ring->skb_size);
1585         else
1586                 skb_put(skb, length);
1587
1588
1589         if (pkt_offset)
1590                 skb_pull(skb, pkt_offset);
1591
1592         skb->protocol = eth_type_trans(skb, netdev);
1593
1594         napi_gro_receive(&sds_ring->napi, skb);
1595
1596         adapter->stats.rx_pkts++;
1597         adapter->stats.rxbytes += length;
1598
1599         return buffer;
1600 }
1601
1602 #define TCP_HDR_SIZE            20
1603 #define TCP_TS_OPTION_SIZE      12
1604 #define TCP_TS_HDR_SIZE         (TCP_HDR_SIZE + TCP_TS_OPTION_SIZE)
1605
1606 static struct netxen_rx_buffer *
1607 netxen_process_lro(struct netxen_adapter *adapter,
1608                 struct nx_host_sds_ring *sds_ring,
1609                 int ring, u64 sts_data0, u64 sts_data1)
1610 {
1611         struct net_device *netdev = adapter->netdev;
1612         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
1613         struct netxen_rx_buffer *buffer;
1614         struct sk_buff *skb;
1615         struct nx_host_rds_ring *rds_ring;
1616         struct iphdr *iph;
1617         struct tcphdr *th;
1618         bool push, timestamp;
1619         int l2_hdr_offset, l4_hdr_offset;
1620         int index;
1621         u16 lro_length, length, data_offset;
1622         u32 seq_number;
1623         u8 vhdr_len = 0;
1624
1625         if (unlikely(ring > adapter->max_rds_rings))
1626                 return NULL;
1627
1628         rds_ring = &recv_ctx->rds_rings[ring];
1629
1630         index = netxen_get_lro_sts_refhandle(sts_data0);
1631         if (unlikely(index > rds_ring->num_desc))
1632                 return NULL;
1633
1634         buffer = &rds_ring->rx_buf_arr[index];
1635
1636         timestamp = netxen_get_lro_sts_timestamp(sts_data0);
1637         lro_length = netxen_get_lro_sts_length(sts_data0);
1638         l2_hdr_offset = netxen_get_lro_sts_l2_hdr_offset(sts_data0);
1639         l4_hdr_offset = netxen_get_lro_sts_l4_hdr_offset(sts_data0);
1640         push = netxen_get_lro_sts_push_flag(sts_data0);
1641         seq_number = netxen_get_lro_sts_seq_number(sts_data1);
1642
1643         skb = netxen_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1644         if (!skb)
1645                 return buffer;
1646
1647         if (timestamp)
1648                 data_offset = l4_hdr_offset + TCP_TS_HDR_SIZE;
1649         else
1650                 data_offset = l4_hdr_offset + TCP_HDR_SIZE;
1651
1652         skb_put(skb, lro_length + data_offset);
1653
1654         skb_pull(skb, l2_hdr_offset);
1655         skb->protocol = eth_type_trans(skb, netdev);
1656
1657         if (skb->protocol == htons(ETH_P_8021Q))
1658                 vhdr_len = VLAN_HLEN;
1659         iph = (struct iphdr *)(skb->data + vhdr_len);
1660         th = (struct tcphdr *)((skb->data + vhdr_len) + (iph->ihl << 2));
1661
1662         length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1663         iph->tot_len = htons(length);
1664         iph->check = 0;
1665         iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
1666         th->psh = push;
1667         th->seq = htonl(seq_number);
1668
1669         length = skb->len;
1670
1671         netif_receive_skb(skb);
1672
1673         adapter->stats.lro_pkts++;
1674         adapter->stats.rxbytes += length;
1675
1676         return buffer;
1677 }
1678
1679 #define netxen_merge_rx_buffers(list, head) \
1680         do { list_splice_tail_init(list, head); } while (0);
1681
1682 int
1683 netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
1684 {
1685         struct netxen_adapter *adapter = sds_ring->adapter;
1686
1687         struct list_head *cur;
1688
1689         struct status_desc *desc;
1690         struct netxen_rx_buffer *rxbuf;
1691
1692         u32 consumer = sds_ring->consumer;
1693
1694         int count = 0;
1695         u64 sts_data0, sts_data1;
1696         int opcode, ring = 0, desc_cnt;
1697
1698         while (count < max) {
1699                 desc = &sds_ring->desc_head[consumer];
1700                 sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1701
1702                 if (!(sts_data0 & STATUS_OWNER_HOST))
1703                         break;
1704
1705                 desc_cnt = netxen_get_sts_desc_cnt(sts_data0);
1706
1707                 opcode = netxen_get_sts_opcode(sts_data0);
1708
1709                 switch (opcode) {
1710                 case NETXEN_NIC_RXPKT_DESC:
1711                 case NETXEN_OLD_RXPKT_DESC:
1712                 case NETXEN_NIC_SYN_OFFLOAD:
1713                         ring = netxen_get_sts_type(sts_data0);
1714                         rxbuf = netxen_process_rcv(adapter, sds_ring,
1715                                         ring, sts_data0);
1716                         break;
1717                 case NETXEN_NIC_LRO_DESC:
1718                         ring = netxen_get_lro_sts_type(sts_data0);
1719                         sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1720                         rxbuf = netxen_process_lro(adapter, sds_ring,
1721                                         ring, sts_data0, sts_data1);
1722                         break;
1723                 case NETXEN_NIC_RESPONSE_DESC:
1724                         netxen_handle_fw_message(desc_cnt, consumer, sds_ring);
1725                 default:
1726                         goto skip;
1727                 }
1728
1729                 WARN_ON(desc_cnt > 1);
1730
1731                 if (rxbuf)
1732                         list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1733
1734 skip:
1735                 for (; desc_cnt > 0; desc_cnt--) {
1736                         desc = &sds_ring->desc_head[consumer];
1737                         desc->status_desc_data[0] =
1738                                 cpu_to_le64(STATUS_OWNER_PHANTOM);
1739                         consumer = get_next_index(consumer, sds_ring->num_desc);
1740                 }
1741                 count++;
1742         }
1743
1744         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1745                 struct nx_host_rds_ring *rds_ring =
1746                         &adapter->recv_ctx.rds_rings[ring];
1747
1748                 if (!list_empty(&sds_ring->free_list[ring])) {
1749                         list_for_each(cur, &sds_ring->free_list[ring]) {
1750                                 rxbuf = list_entry(cur,
1751                                                 struct netxen_rx_buffer, list);
1752                                 netxen_alloc_rx_skb(adapter, rds_ring, rxbuf);
1753                         }
1754                         spin_lock(&rds_ring->lock);
1755                         netxen_merge_rx_buffers(&sds_ring->free_list[ring],
1756                                                 &rds_ring->free_list);
1757                         spin_unlock(&rds_ring->lock);
1758                 }
1759
1760                 netxen_post_rx_buffers_nodb(adapter, rds_ring);
1761         }
1762
1763         if (count) {
1764                 sds_ring->consumer = consumer;
1765                 NXWRIO(adapter, sds_ring->crb_sts_consumer, consumer);
1766         }
1767
1768         return count;
1769 }
1770
1771 /* Process Command status ring */
1772 int netxen_process_cmd_ring(struct netxen_adapter *adapter)
1773 {
1774         u32 sw_consumer, hw_consumer;
1775         int count = 0, i;
1776         struct netxen_cmd_buffer *buffer;
1777         struct pci_dev *pdev = adapter->pdev;
1778         struct net_device *netdev = adapter->netdev;
1779         struct netxen_skb_frag *frag;
1780         int done = 0;
1781         struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
1782
1783         if (!spin_trylock(&adapter->tx_clean_lock))
1784                 return 1;
1785
1786         sw_consumer = tx_ring->sw_consumer;
1787         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1788
1789         while (sw_consumer != hw_consumer) {
1790                 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1791                 if (buffer->skb) {
1792                         frag = &buffer->frag_array[0];
1793                         pci_unmap_single(pdev, frag->dma, frag->length,
1794                                          PCI_DMA_TODEVICE);
1795                         frag->dma = 0ULL;
1796                         for (i = 1; i < buffer->frag_count; i++) {
1797                                 frag++; /* Get the next frag */
1798                                 pci_unmap_page(pdev, frag->dma, frag->length,
1799                                                PCI_DMA_TODEVICE);
1800                                 frag->dma = 0ULL;
1801                         }
1802
1803                         adapter->stats.xmitfinished++;
1804                         dev_kfree_skb_any(buffer->skb);
1805                         buffer->skb = NULL;
1806                 }
1807
1808                 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1809                 if (++count >= MAX_STATUS_HANDLE)
1810                         break;
1811         }
1812
1813         if (count && netif_running(netdev)) {
1814                 tx_ring->sw_consumer = sw_consumer;
1815
1816                 smp_mb();
1817
1818                 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev))
1819                         if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
1820                                 netif_wake_queue(netdev);
1821                 adapter->tx_timeo_cnt = 0;
1822         }
1823         /*
1824          * If everything is freed up to consumer then check if the ring is full
1825          * If the ring is full then check if more needs to be freed and
1826          * schedule the call back again.
1827          *
1828          * This happens when there are 2 CPUs. One could be freeing and the
1829          * other filling it. If the ring is full when we get out of here and
1830          * the card has already interrupted the host then the host can miss the
1831          * interrupt.
1832          *
1833          * There is still a possible race condition and the host could miss an
1834          * interrupt. The card has to take care of this.
1835          */
1836         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1837         done = (sw_consumer == hw_consumer);
1838         spin_unlock(&adapter->tx_clean_lock);
1839
1840         return done;
1841 }
1842
1843 void
1844 netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
1845         struct nx_host_rds_ring *rds_ring)
1846 {
1847         struct rcv_desc *pdesc;
1848         struct netxen_rx_buffer *buffer;
1849         int producer, count = 0;
1850         netxen_ctx_msg msg = 0;
1851         struct list_head *head;
1852
1853         producer = rds_ring->producer;
1854
1855         head = &rds_ring->free_list;
1856         while (!list_empty(head)) {
1857
1858                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1859
1860                 if (!buffer->skb) {
1861                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1862                                 break;
1863                 }
1864
1865                 count++;
1866                 list_del(&buffer->list);
1867
1868                 /* make a rcv descriptor  */
1869                 pdesc = &rds_ring->desc_head[producer];
1870                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1871                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1872                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1873
1874                 producer = get_next_index(producer, rds_ring->num_desc);
1875         }
1876
1877         if (count) {
1878                 rds_ring->producer = producer;
1879                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1880                                 (producer-1) & (rds_ring->num_desc-1));
1881
1882                 if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
1883                         /*
1884                          * Write a doorbell msg to tell phanmon of change in
1885                          * receive ring producer
1886                          * Only for firmware version < 4.0.0
1887                          */
1888                         netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
1889                         netxen_set_msg_privid(msg);
1890                         netxen_set_msg_count(msg,
1891                                              ((producer - 1) &
1892                                               (rds_ring->num_desc - 1)));
1893                         netxen_set_msg_ctxid(msg, adapter->portnum);
1894                         netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
1895                         NXWRIO(adapter, DB_NORMALIZE(adapter,
1896                                         NETXEN_RCV_PRODUCER_OFFSET), msg);
1897                 }
1898         }
1899 }
1900
1901 static void
1902 netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
1903                 struct nx_host_rds_ring *rds_ring)
1904 {
1905         struct rcv_desc *pdesc;
1906         struct netxen_rx_buffer *buffer;
1907         int producer, count = 0;
1908         struct list_head *head;
1909
1910         if (!spin_trylock(&rds_ring->lock))
1911                 return;
1912
1913         producer = rds_ring->producer;
1914
1915         head = &rds_ring->free_list;
1916         while (!list_empty(head)) {
1917
1918                 buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1919
1920                 if (!buffer->skb) {
1921                         if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
1922                                 break;
1923                 }
1924
1925                 count++;
1926                 list_del(&buffer->list);
1927
1928                 /* make a rcv descriptor  */
1929                 pdesc = &rds_ring->desc_head[producer];
1930                 pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
1931                 pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1932                 pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1933
1934                 producer = get_next_index(producer, rds_ring->num_desc);
1935         }
1936
1937         if (count) {
1938                 rds_ring->producer = producer;
1939                 NXWRIO(adapter, rds_ring->crb_rcv_producer,
1940                                 (producer - 1) & (rds_ring->num_desc - 1));
1941         }
1942         spin_unlock(&rds_ring->lock);
1943 }
1944
1945 void netxen_nic_clear_stats(struct netxen_adapter *adapter)
1946 {
1947         memset(&adapter->stats, 0, sizeof(adapter->stats));
1948 }
1949