drivers/net/qlge/qlge_main.c

   1 /*
   2  * QLogic qlge NIC HBA Driver
   3  * Copyright (c)  2003-2008 QLogic Corporation
   4  * See LICENSE.qlge for copyright and licensing details.
   5  * Author:     Linux qlge network device driver by
   6  *                      Ron Mercer <ron.mercer@qlogic.com>
   7  */
   8 #include <linux/kernel.h>
   9 #include <linux/init.h>
  10 #include <linux/types.h>
  11 #include <linux/module.h>
  12 #include <linux/list.h>
  13 #include <linux/pci.h>
  14 #include <linux/dma-mapping.h>
  15 #include <linux/pagemap.h>
  16 #include <linux/sched.h>
  17 #include <linux/slab.h>
  18 #include <linux/dmapool.h>
  19 #include <linux/mempool.h>
  20 #include <linux/spinlock.h>
  21 #include <linux/kthread.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/errno.h>
  24 #include <linux/ioport.h>
  25 #include <linux/in.h>
  26 #include <linux/ip.h>
  27 #include <linux/ipv6.h>
  28 #include <net/ipv6.h>
  29 #include <linux/tcp.h>
  30 #include <linux/udp.h>
  31 #include <linux/if_arp.h>
  32 #include <linux/if_ether.h>
  33 #include <linux/netdevice.h>
  34 #include <linux/etherdevice.h>
  35 #include <linux/ethtool.h>
  36 #include <linux/skbuff.h>
  37 #include <linux/rtnetlink.h>
  38 #include <linux/if_vlan.h>
  39 #include <linux/delay.h>
  40 #include <linux/mm.h>
  41 #include <linux/vmalloc.h>
  42 #include <net/ip6_checksum.h>
  43
  44 #include "qlge.h"
  45
  46 char qlge_driver_name[] = DRV_NAME;
  47 const char qlge_driver_version[] = DRV_VERSION;
  48
  49 MODULE_AUTHOR("Ron Mercer <ron.mercer@qlogic.com>");
  50 MODULE_DESCRIPTION(DRV_STRING " ");
  51 MODULE_LICENSE("GPL");
  52 MODULE_VERSION(DRV_VERSION);
  53
  54 static const u32 default_msg =
  55     NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK |
  56 /* NETIF_MSG_TIMER |    */
  57     NETIF_MSG_IFDOWN |
  58     NETIF_MSG_IFUP |
  59     NETIF_MSG_RX_ERR |
  60     NETIF_MSG_TX_ERR |
  61     NETIF_MSG_TX_QUEUED |
  62     NETIF_MSG_INTR | NETIF_MSG_TX_DONE | NETIF_MSG_RX_STATUS |
  63 /* NETIF_MSG_PKTDATA | */
  64     NETIF_MSG_HW | NETIF_MSG_WOL | 0;
  65
  66 static int debug = 0x00007fff;  /* defaults above */
  67 module_param(debug, int, 0);
  68 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  69
  70 #define MSIX_IRQ 0
  71 #define MSI_IRQ 1
  72 #define LEG_IRQ 2
  73 static int irq_type = MSIX_IRQ;
  74 module_param(irq_type, int, MSIX_IRQ);
  75 MODULE_PARM_DESC(irq_type, "0 = MSI-X, 1 = MSI, 2 = Legacy.");
  76
  77 static struct pci_device_id qlge_pci_tbl[] __devinitdata = {
  78         {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, QLGE_DEVICE_ID)},
  79         /* required last entry */
  80         {0,}
  81 };
  82
  83 MODULE_DEVICE_TABLE(pci, qlge_pci_tbl);
  84
  85 /* This hardware semaphore causes exclusive access to
  86  * resources shared between the NIC driver, MPI firmware,
  87  * FCOE firmware and the FC driver.
  88  */
  89 static int ql_sem_trylock(struct ql_adapter *qdev, u32 sem_mask)
  90 {
  91         u32 sem_bits = 0;
  92
  93         switch (sem_mask) {
  94         case SEM_XGMAC0_MASK:
  95                 sem_bits = SEM_SET << SEM_XGMAC0_SHIFT;
  96                 break;
  97         case SEM_XGMAC1_MASK:
  98                 sem_bits = SEM_SET << SEM_XGMAC1_SHIFT;
  99                 break;
 100         case SEM_ICB_MASK:
 101                 sem_bits = SEM_SET << SEM_ICB_SHIFT;
 102                 break;
 103         case SEM_MAC_ADDR_MASK:
 104                 sem_bits = SEM_SET << SEM_MAC_ADDR_SHIFT;
 105                 break;
 106         case SEM_FLASH_MASK:
 107                 sem_bits = SEM_SET << SEM_FLASH_SHIFT;
 108                 break;
 109         case SEM_PROBE_MASK:
 110                 sem_bits = SEM_SET << SEM_PROBE_SHIFT;
 111                 break;
 112         case SEM_RT_IDX_MASK:
 113                 sem_bits = SEM_SET << SEM_RT_IDX_SHIFT;
 114                 break;
 115         case SEM_PROC_REG_MASK:
 116                 sem_bits = SEM_SET << SEM_PROC_REG_SHIFT;
 117                 break;
 118         default:
 119                 QPRINTK(qdev, PROBE, ALERT, "Bad Semaphore mask!.\n");
 120                 return -EINVAL;
 121         }
 122
 123         ql_write32(qdev, SEM, sem_bits | sem_mask);
 124         return !(ql_read32(qdev, SEM) & sem_bits);
 125 }
 126
 127 int ql_sem_spinlock(struct ql_adapter *qdev, u32 sem_mask)
 128 {
 129         unsigned int wait_count = 30;
 130         do {
 131                 if (!ql_sem_trylock(qdev, sem_mask))
 132                         return 0;
 133                 udelay(100);
 134         } while (--wait_count);
 135         return -ETIMEDOUT;
 136 }
 137
 138 void ql_sem_unlock(struct ql_adapter *qdev, u32 sem_mask)
 139 {
 140         ql_write32(qdev, SEM, sem_mask);
 141         ql_read32(qdev, SEM);   /* flush */
 142 }
 143
 144 /* This function waits for a specific bit to come ready
 145  * in a given register.  It is used mostly by the initialize
 146  * process, but is also used in kernel thread API such as
 147  * netdev->set_multi, netdev->set_mac_address, netdev->vlan_rx_add_vid.
 148  */
 149 int ql_wait_reg_rdy(struct ql_adapter *qdev, u32 reg, u32 bit, u32 err_bit)
 150 {
 151         u32 temp;
 152         int count = UDELAY_COUNT;
 153
 154         while (count) {
 155                 temp = ql_read32(qdev, reg);
 156
 157                 /* check for errors */
 158                 if (temp & err_bit) {
 159                         QPRINTK(qdev, PROBE, ALERT,
 160                                 "register 0x%.08x access error, value = 0x%.08x!.\n",
 161                                 reg, temp);
 162                         return -EIO;
 163                 } else if (temp & bit)
 164                         return 0;
 165                 udelay(UDELAY_DELAY);
 166                 count--;
 167         }
 168         QPRINTK(qdev, PROBE, ALERT,
 169                 "Timed out waiting for reg %x to come ready.\n", reg);
 170         return -ETIMEDOUT;
 171 }
 172
 173 /* The CFG register is used to download TX and RX control blocks
 174  * to the chip. This function waits for an operation to complete.
 175  */
 176 static int ql_wait_cfg(struct ql_adapter *qdev, u32 bit)
 177 {
 178         int count = UDELAY_COUNT;
 179         u32 temp;
 180
 181         while (count) {
 182                 temp = ql_read32(qdev, CFG);
 183                 if (temp & CFG_LE)
 184                         return -EIO;
 185                 if (!(temp & bit))
 186                         return 0;
 187                 udelay(UDELAY_DELAY);
 188                 count--;
 189         }
 190         return -ETIMEDOUT;
 191 }
 192
 193
 194 /* Used to issue init control blocks to hw. Maps control block,
 195  * sets address, triggers download, waits for completion.
 196  */
 197 int ql_write_cfg(struct ql_adapter *qdev, void *ptr, int size, u32 bit,
 198                  u16 q_id)
 199 {
 200         u64 map;
 201         int status = 0;
 202         int direction;
 203         u32 mask;
 204         u32 value;
 205
 206         direction =
 207             (bit & (CFG_LRQ | CFG_LR | CFG_LCQ)) ? PCI_DMA_TODEVICE :
 208             PCI_DMA_FROMDEVICE;
 209
 210         map = pci_map_single(qdev->pdev, ptr, size, direction);
 211         if (pci_dma_mapping_error(qdev->pdev, map)) {
 212                 QPRINTK(qdev, IFUP, ERR, "Couldn't map DMA area.\n");
 213                 return -ENOMEM;
 214         }
 215
 216         status = ql_wait_cfg(qdev, bit);
 217         if (status) {
 218                 QPRINTK(qdev, IFUP, ERR,
 219                         "Timed out waiting for CFG to come ready.\n");
 220                 goto exit;
 221         }
 222
 223         status = ql_sem_spinlock(qdev, SEM_ICB_MASK);
 224         if (status)
 225                 goto exit;
 226         ql_write32(qdev, ICB_L, (u32) map);
 227         ql_write32(qdev, ICB_H, (u32) (map >> 32));
 228         ql_sem_unlock(qdev, SEM_ICB_MASK);      /* does flush too */
 229
 230         mask = CFG_Q_MASK | (bit << 16);
 231         value = bit | (q_id << CFG_Q_SHIFT);
 232         ql_write32(qdev, CFG, (mask | value));
 233
 234         /*
 235          * Wait for the bit to clear after signaling hw.
 236          */
 237         status = ql_wait_cfg(qdev, bit);
 238 exit:
 239         pci_unmap_single(qdev->pdev, map, size, direction);
 240         return status;
 241 }
 242
 243 /* Get a specific MAC address from the CAM.  Used for debug and reg dump. */
 244 int ql_get_mac_addr_reg(struct ql_adapter *qdev, u32 type, u16 index,
 245                         u32 *value)
 246 {
 247         u32 offset = 0;
 248         int status;
 249
 250         status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
 251         if (status)
 252                 return status;
 253         switch (type) {
 254         case MAC_ADDR_TYPE_MULTI_MAC:
 255         case MAC_ADDR_TYPE_CAM_MAC:
 256                 {
 257                         status =
 258                             ql_wait_reg_rdy(qdev,
 259                                 MAC_ADDR_IDX, MAC_ADDR_MW, 0);
 260                         if (status)
 261                                 goto exit;
 262                         ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
 263                                    (index << MAC_ADDR_IDX_SHIFT) | /* index */
 264                                    MAC_ADDR_ADR | MAC_ADDR_RS | type); /* type */
 265                         status =
 266                             ql_wait_reg_rdy(qdev,
 267                                 MAC_ADDR_IDX, MAC_ADDR_MR, 0);
 268                         if (status)
 269                                 goto exit;
 270                         *value++ = ql_read32(qdev, MAC_ADDR_DATA);
 271                         status =
 272                             ql_wait_reg_rdy(qdev,
 273                                 MAC_ADDR_IDX, MAC_ADDR_MW, 0);
 274                         if (status)
 275                                 goto exit;
 276                         ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
 277                                    (index << MAC_ADDR_IDX_SHIFT) | /* index */
 278                                    MAC_ADDR_ADR | MAC_ADDR_RS | type); /* type */
 279                         status =
 280                             ql_wait_reg_rdy(qdev,
 281                                 MAC_ADDR_IDX, MAC_ADDR_MR, 0);
 282                         if (status)
 283                                 goto exit;
 284                         *value++ = ql_read32(qdev, MAC_ADDR_DATA);
 285                         if (type == MAC_ADDR_TYPE_CAM_MAC) {
 286                                 status =
 287                                     ql_wait_reg_rdy(qdev,
 288                                         MAC_ADDR_IDX, MAC_ADDR_MW, 0);
 289                                 if (status)
 290                                         goto exit;
 291                                 ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
 292                                            (index << MAC_ADDR_IDX_SHIFT) | /* index */
 293                                            MAC_ADDR_ADR | MAC_ADDR_RS | type); /* type */
 294                                 status =
 295                                     ql_wait_reg_rdy(qdev, MAC_ADDR_IDX,
 296                                                     MAC_ADDR_MR, 0);
 297                                 if (status)
 298                                         goto exit;
 299                                 *value++ = ql_read32(qdev, MAC_ADDR_DATA);
 300                         }
 301                         break;
 302                 }
 303         case MAC_ADDR_TYPE_VLAN:
 304         case MAC_ADDR_TYPE_MULTI_FLTR:
 305         default:
 306                 QPRINTK(qdev, IFUP, CRIT,
 307                         "Address type %d not yet supported.\n", type);
 308                 status = -EPERM;
 309         }
 310 exit:
 311         ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
 312         return status;
 313 }
 314
 315 /* Set up a MAC, multicast or VLAN address for the
 316  * inbound frame matching.
 317  */
 318 static int ql_set_mac_addr_reg(struct ql_adapter *qdev, u8 *addr, u32 type,
 319                                u16 index)
 320 {
 321         u32 offset = 0;
 322         int status = 0;
 323
 324         status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
 325         if (status)
 326                 return status;
 327         switch (type) {
 328         case MAC_ADDR_TYPE_MULTI_MAC:
 329         case MAC_ADDR_TYPE_CAM_MAC:
 330                 {
 331                         u32 cam_output;
 332                         u32 upper = (addr[0] << 8) | addr[1];
 333                         u32 lower =
 334                             (addr[2] << 24) | (addr[3] << 16) | (addr[4] << 8) |
 335                             (addr[5]);
 336
 337                         QPRINTK(qdev, IFUP, INFO,
 338                                 "Adding %s address %pM"
 339                                 " at index %d in the CAM.\n",
 340                                 ((type ==
 341                                   MAC_ADDR_TYPE_MULTI_MAC) ? "MULTICAST" :
 342                                  "UNICAST"), addr, index);
 343
 344                         status =
 345                             ql_wait_reg_rdy(qdev,
 346                                 MAC_ADDR_IDX, MAC_ADDR_MW, 0);
 347                         if (status)
 348                                 goto exit;
 349                         ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
 350                                    (index << MAC_ADDR_IDX_SHIFT) | /* index */
 351                                    type);       /* type */
 352                         ql_write32(qdev, MAC_ADDR_DATA, lower);
 353                         status =
 354                             ql_wait_reg_rdy(qdev,
 355                                 MAC_ADDR_IDX, MAC_ADDR_MW, 0);
 356                         if (status)
 357                                 goto exit;
 358                         ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
 359                                    (index << MAC_ADDR_IDX_SHIFT) | /* index */
 360                                    type);       /* type */
 361                         ql_write32(qdev, MAC_ADDR_DATA, upper);
 362                         status =
 363                             ql_wait_reg_rdy(qdev,
 364                                 MAC_ADDR_IDX, MAC_ADDR_MW, 0);
 365                         if (status)
 366                                 goto exit;
 367                         ql_write32(qdev, MAC_ADDR_IDX, (offset) |       /* offset */
 368                                    (index << MAC_ADDR_IDX_SHIFT) |      /* index */
 369                                    type);       /* type */
 370                         /* This field should also include the queue id
 371                            and possibly the function id.  Right now we hardcode
 372                            the route field to NIC core.
 373                          */
 374                         if (type == MAC_ADDR_TYPE_CAM_MAC) {
 375                                 cam_output = (CAM_OUT_ROUTE_NIC |
 376                                               (qdev->
 377                                                func << CAM_OUT_FUNC_SHIFT) |
 378                                               (qdev->
 379                                                rss_ring_first_cq_id <<
 380                                                CAM_OUT_CQ_ID_SHIFT));
 381                                 if (qdev->vlgrp)
 382                                         cam_output |= CAM_OUT_RV;
 383                                 /* route to NIC core */
 384                                 ql_write32(qdev, MAC_ADDR_DATA, cam_output);
 385                         }
 386                         break;
 387                 }
 388         case MAC_ADDR_TYPE_VLAN:
 389                 {
 390                         u32 enable_bit = *((u32 *) &addr[0]);
 391                         /* For VLAN, the addr actually holds a bit that
 392                          * either enables or disables the vlan id we are
 393                          * addressing. It's either MAC_ADDR_E on or off.
 394                          * That's bit-27 we're talking about.
 395                          */
 396                         QPRINTK(qdev, IFUP, INFO, "%s VLAN ID %d %s the CAM.\n",
 397                                 (enable_bit ? "Adding" : "Removing"),
 398                                 index, (enable_bit ? "to" : "from"));
 399
 400                         status =
 401                             ql_wait_reg_rdy(qdev,
 402                                 MAC_ADDR_IDX, MAC_ADDR_MW, 0);
 403                         if (status)
 404                                 goto exit;
 405                         ql_write32(qdev, MAC_ADDR_IDX, offset | /* offset */
 406                                    (index << MAC_ADDR_IDX_SHIFT) |      /* index */
 407                                    type |       /* type */
 408                                    enable_bit); /* enable/disable */
 409                         break;
 410                 }
 411         case MAC_ADDR_TYPE_MULTI_FLTR:
 412         default:
 413                 QPRINTK(qdev, IFUP, CRIT,
 414                         "Address type %d not yet supported.\n", type);
 415                 status = -EPERM;
 416         }
 417 exit:
 418         ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
 419         return status;
 420 }
 421
 422 /* Get a specific frame routing value from the CAM.
 423  * Used for debug and reg dump.
 424  */
 425 int ql_get_routing_reg(struct ql_adapter *qdev, u32 index, u32 *value)
 426 {
 427         int status = 0;
 428
 429         status = ql_sem_spinlock(qdev, SEM_RT_IDX_MASK);
 430         if (status)
 431                 goto exit;
 432
 433         status = ql_wait_reg_rdy(qdev, RT_IDX, RT_IDX_MW, 0);
 434         if (status)
 435                 goto exit;
 436
 437         ql_write32(qdev, RT_IDX,
 438                    RT_IDX_TYPE_NICQ | RT_IDX_RS | (index << RT_IDX_IDX_SHIFT));
 439         status = ql_wait_reg_rdy(qdev, RT_IDX, RT_IDX_MR, 0);
 440         if (status)
 441                 goto exit;
 442         *value = ql_read32(qdev, RT_DATA);
 443 exit:
 444         ql_sem_unlock(qdev, SEM_RT_IDX_MASK);
 445         return status;
 446 }
 447
 448 /* The NIC function for this chip has 16 routing indexes.  Each one can be used
 449  * to route different frame types to various inbound queues.  We send broadcast/
 450  * multicast/error frames to the default queue for slow handling,
 451  * and CAM hit/RSS frames to the fast handling queues.
 452  */
 453 static int ql_set_routing_reg(struct ql_adapter *qdev, u32 index, u32 mask,
 454                               int enable)
 455 {
 456         int status;
 457         u32 value = 0;
 458
 459         status = ql_sem_spinlock(qdev, SEM_RT_IDX_MASK);
 460         if (status)
 461                 return status;
 462
 463         QPRINTK(qdev, IFUP, DEBUG,
 464                 "%s %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s mask %s the routing reg.\n",
 465                 (enable ? "Adding" : "Removing"),
 466                 ((index == RT_IDX_ALL_ERR_SLOT) ? "MAC ERROR/ALL ERROR" : ""),
 467                 ((index == RT_IDX_IP_CSUM_ERR_SLOT) ? "IP CSUM ERROR" : ""),
 468                 ((index ==
 469                   RT_IDX_TCP_UDP_CSUM_ERR_SLOT) ? "TCP/UDP CSUM ERROR" : ""),
 470                 ((index == RT_IDX_BCAST_SLOT) ? "BROADCAST" : ""),
 471                 ((index == RT_IDX_MCAST_MATCH_SLOT) ? "MULTICAST MATCH" : ""),
 472                 ((index == RT_IDX_ALLMULTI_SLOT) ? "ALL MULTICAST MATCH" : ""),
 473                 ((index == RT_IDX_UNUSED6_SLOT) ? "UNUSED6" : ""),
 474                 ((index == RT_IDX_UNUSED7_SLOT) ? "UNUSED7" : ""),
 475                 ((index == RT_IDX_RSS_MATCH_SLOT) ? "RSS ALL/IPV4 MATCH" : ""),
 476                 ((index == RT_IDX_RSS_IPV6_SLOT) ? "RSS IPV6" : ""),
 477                 ((index == RT_IDX_RSS_TCP4_SLOT) ? "RSS TCP4" : ""),
 478                 ((index == RT_IDX_RSS_TCP6_SLOT) ? "RSS TCP6" : ""),
 479                 ((index == RT_IDX_CAM_HIT_SLOT) ? "CAM HIT" : ""),
 480                 ((index == RT_IDX_UNUSED013) ? "UNUSED13" : ""),
 481                 ((index == RT_IDX_UNUSED014) ? "UNUSED14" : ""),
 482                 ((index == RT_IDX_PROMISCUOUS_SLOT) ? "PROMISCUOUS" : ""),
 483                 (enable ? "to" : "from"));
 484
 485         switch (mask) {
 486         case RT_IDX_CAM_HIT:
 487                 {
 488                         value = RT_IDX_DST_CAM_Q |      /* dest */
 489                             RT_IDX_TYPE_NICQ |  /* type */
 490                             (RT_IDX_CAM_HIT_SLOT << RT_IDX_IDX_SHIFT);/* index */
 491                         break;
 492                 }
 493         case RT_IDX_VALID:      /* Promiscuous Mode frames. */
 494                 {
 495                         value = RT_IDX_DST_DFLT_Q |     /* dest */
 496                             RT_IDX_TYPE_NICQ |  /* type */
 497                             (RT_IDX_PROMISCUOUS_SLOT << RT_IDX_IDX_SHIFT);/* index */
 498                         break;
 499                 }
 500         case RT_IDX_ERR:        /* Pass up MAC,IP,TCP/UDP error frames. */
 501                 {
 502                         value = RT_IDX_DST_DFLT_Q |     /* dest */
 503                             RT_IDX_TYPE_NICQ |  /* type */
 504                             (RT_IDX_ALL_ERR_SLOT << RT_IDX_IDX_SHIFT);/* index */
 505                         break;
 506                 }
 507         case RT_IDX_BCAST:      /* Pass up Broadcast frames to default Q. */
 508                 {
 509                         value = RT_IDX_DST_DFLT_Q |     /* dest */
 510                             RT_IDX_TYPE_NICQ |  /* type */
 511                             (RT_IDX_BCAST_SLOT << RT_IDX_IDX_SHIFT);/* index */
 512                         break;
 513                 }
 514         case RT_IDX_MCAST:      /* Pass up All Multicast frames. */
 515                 {
 516                         value = RT_IDX_DST_CAM_Q |      /* dest */
 517                             RT_IDX_TYPE_NICQ |  /* type */
 518                             (RT_IDX_ALLMULTI_SLOT << RT_IDX_IDX_SHIFT);/* index */
 519                         break;
 520                 }
 521         case RT_IDX_MCAST_MATCH:        /* Pass up matched Multicast frames. */
 522                 {
 523                         value = RT_IDX_DST_CAM_Q |      /* dest */
 524                             RT_IDX_TYPE_NICQ |  /* type */
 525                             (RT_IDX_MCAST_MATCH_SLOT << RT_IDX_IDX_SHIFT);/* index */
 526                         break;
 527                 }
 528         case RT_IDX_RSS_MATCH:  /* Pass up matched RSS frames. */
 529                 {
 530                         value = RT_IDX_DST_RSS |        /* dest */
 531                             RT_IDX_TYPE_NICQ |  /* type */
 532                             (RT_IDX_RSS_MATCH_SLOT << RT_IDX_IDX_SHIFT);/* index */
 533                         break;
 534                 }
 535         case 0:         /* Clear the E-bit on an entry. */
 536                 {
 537                         value = RT_IDX_DST_DFLT_Q |     /* dest */
 538                             RT_IDX_TYPE_NICQ |  /* type */
 539                             (index << RT_IDX_IDX_SHIFT);/* index */
 540                         break;
 541                 }
 542         default:
 543                 QPRINTK(qdev, IFUP, ERR, "Mask type %d not yet supported.\n",
 544                         mask);
 545                 status = -EPERM;
 546                 goto exit;
 547         }
 548
 549         if (value) {
 550                 status = ql_wait_reg_rdy(qdev, RT_IDX, RT_IDX_MW, 0);
 551                 if (status)
 552                         goto exit;
 553                 value |= (enable ? RT_IDX_E : 0);
 554                 ql_write32(qdev, RT_IDX, value);
 555                 ql_write32(qdev, RT_DATA, enable ? mask : 0);
 556         }
 557 exit:
 558         ql_sem_unlock(qdev, SEM_RT_IDX_MASK);
 559         return status;
 560 }
 561
 562 static void ql_enable_interrupts(struct ql_adapter *qdev)
 563 {
 564         ql_write32(qdev, INTR_EN, (INTR_EN_EI << 16) | INTR_EN_EI);
 565 }
 566
 567 static void ql_disable_interrupts(struct ql_adapter *qdev)
 568 {
 569         ql_write32(qdev, INTR_EN, (INTR_EN_EI << 16));
 570 }
 571
 572 /* If we're running with multiple MSI-X vectors then we enable on the fly.
 573  * Otherwise, we may have multiple outstanding workers and don't want to
 574  * enable until the last one finishes. In this case, the irq_cnt gets
 575  * incremented everytime we queue a worker and decremented everytime
 576  * a worker finishes.  Once it hits zero we enable the interrupt.
 577  */
 578 u32 ql_enable_completion_interrupt(struct ql_adapter *qdev, u32 intr)
 579 {
 580         u32 var = 0;
 581         unsigned long hw_flags = 0;
 582         struct intr_context *ctx = qdev->intr_context + intr;
 583
 584         if (likely(test_bit(QL_MSIX_ENABLED, &qdev->flags) && intr)) {
 585                 /* Always enable if we're MSIX multi interrupts and
 586                  * it's not the default (zeroeth) interrupt.
 587                  */
 588                 ql_write32(qdev, INTR_EN,
 589                            ctx->intr_en_mask);
 590                 var = ql_read32(qdev, STS);
 591                 return var;
 592         }
 593
 594         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
 595         if (atomic_dec_and_test(&ctx->irq_cnt)) {
 596                 ql_write32(qdev, INTR_EN,
 597                            ctx->intr_en_mask);
 598                 var = ql_read32(qdev, STS);
 599         }
 600         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
 601         return var;
 602 }
 603
 604 static u32 ql_disable_completion_interrupt(struct ql_adapter *qdev, u32 intr)
 605 {
 606         u32 var = 0;
 607         unsigned long hw_flags;
 608         struct intr_context *ctx;
 609
 610         /* HW disables for us if we're MSIX multi interrupts and
 611          * it's not the default (zeroeth) interrupt.
 612          */
 613         if (likely(test_bit(QL_MSIX_ENABLED, &qdev->flags) && intr))
 614                 return 0;
 615
 616         ctx = qdev->intr_context + intr;
 617         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
 618         if (!atomic_read(&ctx->irq_cnt)) {
 619                 ql_write32(qdev, INTR_EN,
 620                 ctx->intr_dis_mask);
 621                 var = ql_read32(qdev, STS);
 622         }
 623         atomic_inc(&ctx->irq_cnt);
 624         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
 625         return var;
 626 }
 627
 628 static void ql_enable_all_completion_interrupts(struct ql_adapter *qdev)
 629 {
 630         int i;
 631         for (i = 0; i < qdev->intr_count; i++) {
 632                 /* The enable call does a atomic_dec_and_test
 633                  * and enables only if the result is zero.
 634                  * So we precharge it here.
 635                  */
 636                 if (unlikely(!test_bit(QL_MSIX_ENABLED, &qdev->flags) ||
 637                         i == 0))
 638                         atomic_set(&qdev->intr_context[i].irq_cnt, 1);
 639                 ql_enable_completion_interrupt(qdev, i);
 640         }
 641
 642 }
 643
 644 static int ql_read_flash_word(struct ql_adapter *qdev, int offset, __le32 *data)
 645 {
 646         int status = 0;
 647         /* wait for reg to come ready */
 648         status = ql_wait_reg_rdy(qdev,
 649                         FLASH_ADDR, FLASH_ADDR_RDY, FLASH_ADDR_ERR);
 650         if (status)
 651                 goto exit;
 652         /* set up for reg read */
 653         ql_write32(qdev, FLASH_ADDR, FLASH_ADDR_R | offset);
 654         /* wait for reg to come ready */
 655         status = ql_wait_reg_rdy(qdev,
 656                         FLASH_ADDR, FLASH_ADDR_RDY, FLASH_ADDR_ERR);
 657         if (status)
 658                 goto exit;
 659          /* This data is stored on flash as an array of
 660          * __le32.  Since ql_read32() returns cpu endian
 661          * we need to swap it back.
 662          */
 663         *data = cpu_to_le32(ql_read32(qdev, FLASH_DATA));
 664 exit:
 665         return status;
 666 }
 667
 668 static int ql_get_flash_params(struct ql_adapter *qdev)
 669 {
 670         int i;
 671         int status;
 672         __le32 *p = (__le32 *)&qdev->flash;
 673         u32 offset = 0;
 674
 675         /* Second function's parameters follow the first
 676          * function's.
 677          */
 678         if (qdev->func)
 679                 offset = sizeof(qdev->flash) / sizeof(u32);
 680
 681         if (ql_sem_spinlock(qdev, SEM_FLASH_MASK))
 682                 return -ETIMEDOUT;
 683
 684         for (i = 0; i < sizeof(qdev->flash) / sizeof(u32); i++, p++) {
 685                 status = ql_read_flash_word(qdev, i+offset, p);
 686                 if (status) {
 687                         QPRINTK(qdev, IFUP, ERR, "Error reading flash.\n");
 688                         goto exit;
 689                 }
 690
 691         }
 692 exit:
 693         ql_sem_unlock(qdev, SEM_FLASH_MASK);
 694         return status;
 695 }
 696
 697 /* xgmac register are located behind the xgmac_addr and xgmac_data
 698  * register pair.  Each read/write requires us to wait for the ready
 699  * bit before reading/writing the data.
 700  */
 701 static int ql_write_xgmac_reg(struct ql_adapter *qdev, u32 reg, u32 data)
 702 {
 703         int status;
 704         /* wait for reg to come ready */
 705         status = ql_wait_reg_rdy(qdev,
 706                         XGMAC_ADDR, XGMAC_ADDR_RDY, XGMAC_ADDR_XME);
 707         if (status)
 708                 return status;
 709         /* write the data to the data reg */
 710         ql_write32(qdev, XGMAC_DATA, data);
 711         /* trigger the write */
 712         ql_write32(qdev, XGMAC_ADDR, reg);
 713         return status;
 714 }
 715
 716 /* xgmac register are located behind the xgmac_addr and xgmac_data
 717  * register pair.  Each read/write requires us to wait for the ready
 718  * bit before reading/writing the data.
 719  */
 720 int ql_read_xgmac_reg(struct ql_adapter *qdev, u32 reg, u32 *data)
 721 {
 722         int status = 0;
 723         /* wait for reg to come ready */
 724         status = ql_wait_reg_rdy(qdev,
 725                         XGMAC_ADDR, XGMAC_ADDR_RDY, XGMAC_ADDR_XME);
 726         if (status)
 727                 goto exit;
 728         /* set up for reg read */
 729         ql_write32(qdev, XGMAC_ADDR, reg | XGMAC_ADDR_R);
 730         /* wait for reg to come ready */
 731         status = ql_wait_reg_rdy(qdev,
 732                         XGMAC_ADDR, XGMAC_ADDR_RDY, XGMAC_ADDR_XME);
 733         if (status)
 734                 goto exit;
 735         /* get the data */
 736         *data = ql_read32(qdev, XGMAC_DATA);
 737 exit:
 738         return status;
 739 }
 740
 741 /* This is used for reading the 64-bit statistics regs. */
 742 int ql_read_xgmac_reg64(struct ql_adapter *qdev, u32 reg, u64 *data)
 743 {
 744         int status = 0;
 745         u32 hi = 0;
 746         u32 lo = 0;
 747
 748         status = ql_read_xgmac_reg(qdev, reg, &lo);
 749         if (status)
 750                 goto exit;
 751
 752         status = ql_read_xgmac_reg(qdev, reg + 4, &hi);
 753         if (status)
 754                 goto exit;
 755
 756         *data = (u64) lo | ((u64) hi << 32);
 757
 758 exit:
 759         return status;
 760 }
 761
 762 /* Take the MAC Core out of reset.
 763  * Enable statistics counting.
 764  * Take the transmitter/receiver out of reset.
 765  * This functionality may be done in the MPI firmware at a
 766  * later date.
 767  */
 768 static int ql_port_initialize(struct ql_adapter *qdev)
 769 {
 770         int status = 0;
 771         u32 data;
 772
 773         if (ql_sem_trylock(qdev, qdev->xg_sem_mask)) {
 774                 /* Another function has the semaphore, so
 775                  * wait for the port init bit to come ready.
 776                  */
 777                 QPRINTK(qdev, LINK, INFO,
 778                         "Another function has the semaphore, so wait for the port init bit to come ready.\n");
 779                 status = ql_wait_reg_rdy(qdev, STS, qdev->port_init, 0);
 780                 if (status) {
 781                         QPRINTK(qdev, LINK, CRIT,
 782                                 "Port initialize timed out.\n");
 783                 }
 784                 return status;
 785         }
 786
 787         QPRINTK(qdev, LINK, INFO, "Got xgmac semaphore!.\n");
 788         /* Set the core reset. */
 789         status = ql_read_xgmac_reg(qdev, GLOBAL_CFG, &data);
 790         if (status)
 791                 goto end;
 792         data |= GLOBAL_CFG_RESET;
 793         status = ql_write_xgmac_reg(qdev, GLOBAL_CFG, data);
 794         if (status)
 795                 goto end;
 796
 797         /* Clear the core reset and turn on jumbo for receiver. */
 798         data &= ~GLOBAL_CFG_RESET;      /* Clear core reset. */
 799         data |= GLOBAL_CFG_JUMBO;       /* Turn on jumbo. */
 800         data |= GLOBAL_CFG_TX_STAT_EN;
 801         data |= GLOBAL_CFG_RX_STAT_EN;
 802         status = ql_write_xgmac_reg(qdev, GLOBAL_CFG, data);
 803         if (status)
 804                 goto end;
 805
 806         /* Enable transmitter, and clear it's reset. */
 807         status = ql_read_xgmac_reg(qdev, TX_CFG, &data);
 808         if (status)
 809                 goto end;
 810         data &= ~TX_CFG_RESET;  /* Clear the TX MAC reset. */
 811         data |= TX_CFG_EN;      /* Enable the transmitter. */
 812         status = ql_write_xgmac_reg(qdev, TX_CFG, data);
 813         if (status)
 814                 goto end;
 815
 816         /* Enable receiver and clear it's reset. */
 817         status = ql_read_xgmac_reg(qdev, RX_CFG, &data);
 818         if (status)
 819                 goto end;
 820         data &= ~RX_CFG_RESET;  /* Clear the RX MAC reset. */
 821         data |= RX_CFG_EN;      /* Enable the receiver. */
 822         status = ql_write_xgmac_reg(qdev, RX_CFG, data);
 823         if (status)
 824                 goto end;
 825
 826         /* Turn on jumbo. */
 827         status =
 828             ql_write_xgmac_reg(qdev, MAC_TX_PARAMS, MAC_TX_PARAMS_JUMBO | (0x2580 << 16));
 829         if (status)
 830                 goto end;
 831         status =
 832             ql_write_xgmac_reg(qdev, MAC_RX_PARAMS, 0x2580);
 833         if (status)
 834                 goto end;
 835
 836         /* Signal to the world that the port is enabled.        */
 837         ql_write32(qdev, STS, ((qdev->port_init << 16) | qdev->port_init));
 838 end:
 839         ql_sem_unlock(qdev, qdev->xg_sem_mask);
 840         return status;
 841 }
 842
 843 /* Get the next large buffer. */
 844 static struct bq_desc *ql_get_curr_lbuf(struct rx_ring *rx_ring)
 845 {
 846         struct bq_desc *lbq_desc = &rx_ring->lbq[rx_ring->lbq_curr_idx];
 847         rx_ring->lbq_curr_idx++;
 848         if (rx_ring->lbq_curr_idx == rx_ring->lbq_len)
 849                 rx_ring->lbq_curr_idx = 0;
 850         rx_ring->lbq_free_cnt++;
 851         return lbq_desc;
 852 }
 853
 854 /* Get the next small buffer. */
 855 static struct bq_desc *ql_get_curr_sbuf(struct rx_ring *rx_ring)
 856 {
 857         struct bq_desc *sbq_desc = &rx_ring->sbq[rx_ring->sbq_curr_idx];
 858         rx_ring->sbq_curr_idx++;
 859         if (rx_ring->sbq_curr_idx == rx_ring->sbq_len)
 860                 rx_ring->sbq_curr_idx = 0;
 861         rx_ring->sbq_free_cnt++;
 862         return sbq_desc;
 863 }
 864
 865 /* Update an rx ring index. */
 866 static void ql_update_cq(struct rx_ring *rx_ring)
 867 {
 868         rx_ring->cnsmr_idx++;
 869         rx_ring->curr_entry++;
 870         if (unlikely(rx_ring->cnsmr_idx == rx_ring->cq_len)) {
 871                 rx_ring->cnsmr_idx = 0;
 872                 rx_ring->curr_entry = rx_ring->cq_base;
 873         }
 874 }
 875
 876 static void ql_write_cq_idx(struct rx_ring *rx_ring)
 877 {
 878         ql_write_db_reg(rx_ring->cnsmr_idx, rx_ring->cnsmr_idx_db_reg);
 879 }
 880
 881 /* Process (refill) a large buffer queue. */
 882 static void ql_update_lbq(struct ql_adapter *qdev, struct rx_ring *rx_ring)
 883 {
 884         int clean_idx = rx_ring->lbq_clean_idx;
 885         struct bq_desc *lbq_desc;
 886         u64 map;
 887         int i;
 888
 889         while (rx_ring->lbq_free_cnt > 16) {
 890                 for (i = 0; i < 16; i++) {
 891                         QPRINTK(qdev, RX_STATUS, DEBUG,
 892                                 "lbq: try cleaning clean_idx = %d.\n",
 893                                 clean_idx);
 894                         lbq_desc = &rx_ring->lbq[clean_idx];
 895                         if (lbq_desc->p.lbq_page == NULL) {
 896                                 QPRINTK(qdev, RX_STATUS, DEBUG,
 897                                         "lbq: getting new page for index %d.\n",
 898                                         lbq_desc->index);
 899                                 lbq_desc->p.lbq_page = alloc_page(GFP_ATOMIC);
 900                                 if (lbq_desc->p.lbq_page == NULL) {
 901                                         QPRINTK(qdev, RX_STATUS, ERR,
 902                                                 "Couldn't get a page.\n");
 903                                         return;
 904                                 }
 905                                 map = pci_map_page(qdev->pdev,
 906                                                    lbq_desc->p.lbq_page,
 907                                                    0, PAGE_SIZE,
 908                                                    PCI_DMA_FROMDEVICE);
 909                                 if (pci_dma_mapping_error(qdev->pdev, map)) {
 910                                         QPRINTK(qdev, RX_STATUS, ERR,
 911                                                 "PCI mapping failed.\n");
 912                                         return;
 913                                 }
 914                                 pci_unmap_addr_set(lbq_desc, mapaddr, map);
 915                                 pci_unmap_len_set(lbq_desc, maplen, PAGE_SIZE);
 916                                 *lbq_desc->addr = cpu_to_le64(map);
 917                         }
 918                         clean_idx++;
 919                         if (clean_idx == rx_ring->lbq_len)
 920                                 clean_idx = 0;
 921                 }
 922
 923                 rx_ring->lbq_clean_idx = clean_idx;
 924                 rx_ring->lbq_prod_idx += 16;
 925                 if (rx_ring->lbq_prod_idx == rx_ring->lbq_len)
 926                         rx_ring->lbq_prod_idx = 0;
 927                 QPRINTK(qdev, RX_STATUS, DEBUG,
 928                         "lbq: updating prod idx = %d.\n",
 929                         rx_ring->lbq_prod_idx);
 930                 ql_write_db_reg(rx_ring->lbq_prod_idx,
 931                                 rx_ring->lbq_prod_idx_db_reg);
 932                 rx_ring->lbq_free_cnt -= 16;
 933         }
 934 }
 935
 936 /* Process (refill) a small buffer queue. */
 937 static void ql_update_sbq(struct ql_adapter *qdev, struct rx_ring *rx_ring)
 938 {
 939         int clean_idx = rx_ring->sbq_clean_idx;
 940         struct bq_desc *sbq_desc;
 941         u64 map;
 942         int i;
 943
 944         while (rx_ring->sbq_free_cnt > 16) {
 945                 for (i = 0; i < 16; i++) {
 946                         sbq_desc = &rx_ring->sbq[clean_idx];
 947                         QPRINTK(qdev, RX_STATUS, DEBUG,
 948                                 "sbq: try cleaning clean_idx = %d.\n",
 949                                 clean_idx);
 950                         if (sbq_desc->p.skb == NULL) {
 951                                 QPRINTK(qdev, RX_STATUS, DEBUG,
 952                                         "sbq: getting new skb for index %d.\n",
 953                                         sbq_desc->index);
 954                                 sbq_desc->p.skb =
 955                                     netdev_alloc_skb(qdev->ndev,
 956                                                      rx_ring->sbq_buf_size);
 957                                 if (sbq_desc->p.skb == NULL) {
 958                                         QPRINTK(qdev, PROBE, ERR,
 959                                                 "Couldn't get an skb.\n");
 960                                         rx_ring->sbq_clean_idx = clean_idx;
 961                                         return;
 962                                 }
 963                                 skb_reserve(sbq_desc->p.skb, QLGE_SB_PAD);
 964                                 map = pci_map_single(qdev->pdev,
 965                                                      sbq_desc->p.skb->data,
 966                                                      rx_ring->sbq_buf_size /
 967                                                      2, PCI_DMA_FROMDEVICE);
 968                                 if (pci_dma_mapping_error(qdev->pdev, map)) {
 969                                         QPRINTK(qdev, IFUP, ERR, "PCI mapping failed.\n");
 970                                         rx_ring->sbq_clean_idx = clean_idx;
 971                                         return;
 972                                 }
 973                                 pci_unmap_addr_set(sbq_desc, mapaddr, map);
 974                                 pci_unmap_len_set(sbq_desc, maplen,
 975                                                   rx_ring->sbq_buf_size / 2);
 976                                 *sbq_desc->addr = cpu_to_le64(map);
 977                         }
 978
 979                         clean_idx++;
 980                         if (clean_idx == rx_ring->sbq_len)
 981                                 clean_idx = 0;
 982                 }
 983                 rx_ring->sbq_clean_idx = clean_idx;
 984                 rx_ring->sbq_prod_idx += 16;
 985                 if (rx_ring->sbq_prod_idx == rx_ring->sbq_len)
 986                         rx_ring->sbq_prod_idx = 0;
 987                 QPRINTK(qdev, RX_STATUS, DEBUG,
 988                         "sbq: updating prod idx = %d.\n",
 989                         rx_ring->sbq_prod_idx);
 990                 ql_write_db_reg(rx_ring->sbq_prod_idx,
 991                                 rx_ring->sbq_prod_idx_db_reg);
 992
 993                 rx_ring->sbq_free_cnt -= 16;
 994         }
 995 }
 996
 997 static void ql_update_buffer_queues(struct ql_adapter *qdev,
 998                                     struct rx_ring *rx_ring)
 999 {
1000         ql_update_sbq(qdev, rx_ring);
1001         ql_update_lbq(qdev, rx_ring);
1002 }
1003
1004 /* Unmaps tx buffers.  Can be called from send() if a pci mapping
1005  * fails at some stage, or from the interrupt when a tx completes.
1006  */
1007 static void ql_unmap_send(struct ql_adapter *qdev,
1008                           struct tx_ring_desc *tx_ring_desc, int mapped)
1009 {
1010         int i;
1011         for (i = 0; i < mapped; i++) {
1012                 if (i == 0 || (i == 7 && mapped > 7)) {
1013                         /*
1014                          * Unmap the skb->data area, or the
1015                          * external sglist (AKA the Outbound
1016                          * Address List (OAL)).
1017                          * If its the zeroeth element, then it's
1018                          * the skb->data area.  If it's the 7th
1019                          * element and there is more than 6 frags,
1020                          * then its an OAL.
1021                          */
1022                         if (i == 7) {
1023                                 QPRINTK(qdev, TX_DONE, DEBUG,
1024                                         "unmapping OAL area.\n");
1025                         }
1026                         pci_unmap_single(qdev->pdev,
1027                                          pci_unmap_addr(&tx_ring_desc->map[i],
1028                                                         mapaddr),
1029                                          pci_unmap_len(&tx_ring_desc->map[i],
1030                                                        maplen),
1031                                          PCI_DMA_TODEVICE);
1032                 } else {
1033                         QPRINTK(qdev, TX_DONE, DEBUG, "unmapping frag %d.\n",
1034                                 i);
1035                         pci_unmap_page(qdev->pdev,
1036                                        pci_unmap_addr(&tx_ring_desc->map[i],
1037                                                       mapaddr),
1038                                        pci_unmap_len(&tx_ring_desc->map[i],
1039                                                      maplen), PCI_DMA_TODEVICE);
1040                 }
1041         }
1042
1043 }
1044
1045 /* Map the buffers for this transmit.  This will return
1046  * NETDEV_TX_BUSY or NETDEV_TX_OK based on success.
1047  */
1048 static int ql_map_send(struct ql_adapter *qdev,
1049                        struct ob_mac_iocb_req *mac_iocb_ptr,
1050                        struct sk_buff *skb, struct tx_ring_desc *tx_ring_desc)
1051 {
1052         int len = skb_headlen(skb);
1053         dma_addr_t map;
1054         int frag_idx, err, map_idx = 0;
1055         struct tx_buf_desc *tbd = mac_iocb_ptr->tbd;
1056         int frag_cnt = skb_shinfo(skb)->nr_frags;
1057
1058         if (frag_cnt) {
1059                 QPRINTK(qdev, TX_QUEUED, DEBUG, "frag_cnt = %d.\n", frag_cnt);
1060         }
1061         /*
1062          * Map the skb buffer first.
1063          */
1064         map = pci_map_single(qdev->pdev, skb->data, len, PCI_DMA_TODEVICE);
1065
1066         err = pci_dma_mapping_error(qdev->pdev, map);
1067         if (err) {
1068                 QPRINTK(qdev, TX_QUEUED, ERR,
1069                         "PCI mapping failed with error: %d\n", err);
1070
1071                 return NETDEV_TX_BUSY;
1072         }
1073
1074         tbd->len = cpu_to_le32(len);
1075         tbd->addr = cpu_to_le64(map);
1076         pci_unmap_addr_set(&tx_ring_desc->map[map_idx], mapaddr, map);
1077         pci_unmap_len_set(&tx_ring_desc->map[map_idx], maplen, len);
1078         map_idx++;
1079
1080         /*
1081          * This loop fills the remainder of the 8 address descriptors
1082          * in the IOCB.  If there are more than 7 fragments, then the
1083          * eighth address desc will point to an external list (OAL).
1084          * When this happens, the remainder of the frags will be stored
1085          * in this list.
1086          */
1087         for (frag_idx = 0; frag_idx < frag_cnt; frag_idx++, map_idx++) {
1088                 skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_idx];
1089                 tbd++;
1090                 if (frag_idx == 6 && frag_cnt > 7) {
1091                         /* Let's tack on an sglist.
1092                          * Our control block will now
1093                          * look like this:
1094                          * iocb->seg[0] = skb->data
1095                          * iocb->seg[1] = frag[0]
1096                          * iocb->seg[2] = frag[1]
1097                          * iocb->seg[3] = frag[2]
1098                          * iocb->seg[4] = frag[3]
1099                          * iocb->seg[5] = frag[4]
1100                          * iocb->seg[6] = frag[5]
1101                          * iocb->seg[7] = ptr to OAL (external sglist)
1102                          * oal->seg[0] = frag[6]
1103                          * oal->seg[1] = frag[7]
1104                          * oal->seg[2] = frag[8]
1105                          * oal->seg[3] = frag[9]
1106                          * oal->seg[4] = frag[10]
1107                          *      etc...
1108                          */
1109                         /* Tack on the OAL in the eighth segment of IOCB. */
1110                         map = pci_map_single(qdev->pdev, &tx_ring_desc->oal,
1111                                              sizeof(struct oal),
1112                                              PCI_DMA_TODEVICE);
1113                         err = pci_dma_mapping_error(qdev->pdev, map);
1114                         if (err) {
1115                                 QPRINTK(qdev, TX_QUEUED, ERR,
1116                                         "PCI mapping outbound address list with error: %d\n",
1117                                         err);
1118                                 goto map_error;
1119                         }
1120
1121                         tbd->addr = cpu_to_le64(map);
1122                         /*
1123                          * The length is the number of fragments
1124                          * that remain to be mapped times the length
1125                          * of our sglist (OAL).
1126                          */
1127                         tbd->len =
1128                             cpu_to_le32((sizeof(struct tx_buf_desc) *
1129                                          (frag_cnt - frag_idx)) | TX_DESC_C);
1130                         pci_unmap_addr_set(&tx_ring_desc->map[map_idx], mapaddr,
1131                                            map);
1132                         pci_unmap_len_set(&tx_ring_desc->map[map_idx], maplen,
1133                                           sizeof(struct oal));
1134                         tbd = (struct tx_buf_desc *)&tx_ring_desc->oal;
1135                         map_idx++;
1136                 }
1137
1138                 map =
1139                     pci_map_page(qdev->pdev, frag->page,
1140                                  frag->page_offset, frag->size,
1141                                  PCI_DMA_TODEVICE);
1142
1143                 err = pci_dma_mapping_error(qdev->pdev, map);
1144                 if (err) {
1145                         QPRINTK(qdev, TX_QUEUED, ERR,
1146                                 "PCI mapping frags failed with error: %d.\n",
1147                                 err);
1148                         goto map_error;
1149                 }
1150
1151                 tbd->addr = cpu_to_le64(map);
1152                 tbd->len = cpu_to_le32(frag->size);
1153                 pci_unmap_addr_set(&tx_ring_desc->map[map_idx], mapaddr, map);
1154                 pci_unmap_len_set(&tx_ring_desc->map[map_idx], maplen,
1155                                   frag->size);
1156
1157         }
1158         /* Save the number of segments we've mapped. */
1159         tx_ring_desc->map_cnt = map_idx;
1160         /* Terminate the last segment. */
1161         tbd->len = cpu_to_le32(le32_to_cpu(tbd->len) | TX_DESC_E);
1162         return NETDEV_TX_OK;
1163
1164 map_error:
1165         /*
1166          * If the first frag mapping failed, then i will be zero.
1167          * This causes the unmap of the skb->data area.  Otherwise
1168          * we pass in the number of frags that mapped successfully
1169          * so they can be umapped.
1170          */
1171         ql_unmap_send(qdev, tx_ring_desc, map_idx);
1172         return NETDEV_TX_BUSY;
1173 }
1174
1175 static void ql_realign_skb(struct sk_buff *skb, int len)
1176 {
1177         void *temp_addr = skb->data;
1178
1179         /* Undo the skb_reserve(skb,32) we did before
1180          * giving to hardware, and realign data on
1181          * a 2-byte boundary.
1182          */
1183         skb->data -= QLGE_SB_PAD - NET_IP_ALIGN;
1184         skb->tail -= QLGE_SB_PAD - NET_IP_ALIGN;
1185         skb_copy_to_linear_data(skb, temp_addr,
1186                 (unsigned int)len);
1187 }
1188
1189 /*
1190  * This function builds an skb for the given inbound
1191  * completion.  It will be rewritten for readability in the near
1192  * future, but for not it works well.
1193  */
1194 static struct sk_buff *ql_build_rx_skb(struct ql_adapter *qdev,
1195                                        struct rx_ring *rx_ring,
1196                                        struct ib_mac_iocb_rsp *ib_mac_rsp)
1197 {
1198         struct bq_desc *lbq_desc;
1199         struct bq_desc *sbq_desc;
1200         struct sk_buff *skb = NULL;
1201         u32 length = le32_to_cpu(ib_mac_rsp->data_len);
1202        u32 hdr_len = le32_to_cpu(ib_mac_rsp->hdr_len);
1203
1204         /*
1205          * Handle the header buffer if present.
1206          */
1207         if (ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HV &&
1208             ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS) {
1209                 QPRINTK(qdev, RX_STATUS, DEBUG, "Header of %d bytes in small buffer.\n", hdr_len);
1210                 /*
1211                  * Headers fit nicely into a small buffer.
1212                  */
1213                 sbq_desc = ql_get_curr_sbuf(rx_ring);
1214                 pci_unmap_single(qdev->pdev,
1215                                 pci_unmap_addr(sbq_desc, mapaddr),
1216                                 pci_unmap_len(sbq_desc, maplen),
1217                                 PCI_DMA_FROMDEVICE);
1218                 skb = sbq_desc->p.skb;
1219                 ql_realign_skb(skb, hdr_len);
1220                 skb_put(skb, hdr_len);
1221                 sbq_desc->p.skb = NULL;
1222         }
1223
1224         /*
1225          * Handle the data buffer(s).
1226          */
1227         if (unlikely(!length)) {        /* Is there data too? */
1228                 QPRINTK(qdev, RX_STATUS, DEBUG,
1229                         "No Data buffer in this packet.\n");
1230                 return skb;
1231         }
1232
1233         if (ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_DS) {
1234                 if (ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS) {
1235                         QPRINTK(qdev, RX_STATUS, DEBUG,
1236                                 "Headers in small, data of %d bytes in small, combine them.\n", length);
1237                         /*
1238                          * Data is less than small buffer size so it's
1239                          * stuffed in a small buffer.
1240                          * For this case we append the data
1241                          * from the "data" small buffer to the "header" small
1242                          * buffer.
1243                          */
1244                         sbq_desc = ql_get_curr_sbuf(rx_ring);
1245                         pci_dma_sync_single_for_cpu(qdev->pdev,
1246                                                     pci_unmap_addr
1247                                                     (sbq_desc, mapaddr),
1248                                                     pci_unmap_len
1249                                                     (sbq_desc, maplen),
1250                                                     PCI_DMA_FROMDEVICE);
1251                         memcpy(skb_put(skb, length),
1252                                sbq_desc->p.skb->data, length);
1253                         pci_dma_sync_single_for_device(qdev->pdev,
1254                                                        pci_unmap_addr
1255                                                        (sbq_desc,
1256                                                         mapaddr),
1257                                                        pci_unmap_len
1258                                                        (sbq_desc,
1259                                                         maplen),
1260                                                        PCI_DMA_FROMDEVICE);
1261                 } else {
1262                         QPRINTK(qdev, RX_STATUS, DEBUG,
1263                                 "%d bytes in a single small buffer.\n", length);
1264                         sbq_desc = ql_get_curr_sbuf(rx_ring);
1265                         skb = sbq_desc->p.skb;
1266                         ql_realign_skb(skb, length);
1267                         skb_put(skb, length);
1268                         pci_unmap_single(qdev->pdev,
1269                                          pci_unmap_addr(sbq_desc,
1270                                                         mapaddr),
1271                                          pci_unmap_len(sbq_desc,
1272                                                        maplen),
1273                                          PCI_DMA_FROMDEVICE);
1274                         sbq_desc->p.skb = NULL;
1275                 }
1276         } else if (ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_DL) {
1277                 if (ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS) {
1278                         QPRINTK(qdev, RX_STATUS, DEBUG,
1279                                 "Header in small, %d bytes in large. Chain large to small!\n", length);
1280                         /*
1281                          * The data is in a single large buffer.  We
1282                          * chain it to the header buffer's skb and let
1283                          * it rip.
1284                          */
1285                         lbq_desc = ql_get_curr_lbuf(rx_ring);
1286                         pci_unmap_page(qdev->pdev,
1287                                        pci_unmap_addr(lbq_desc,
1288                                                       mapaddr),
1289                                        pci_unmap_len(lbq_desc, maplen),
1290                                        PCI_DMA_FROMDEVICE);
1291                         QPRINTK(qdev, RX_STATUS, DEBUG,
1292                                 "Chaining page to skb.\n");
1293                         skb_fill_page_desc(skb, 0, lbq_desc->p.lbq_page,
1294                                            0, length);
1295                         skb->len += length;
1296                         skb->data_len += length;
1297                         skb->truesize += length;
1298                         lbq_desc->p.lbq_page = NULL;
1299                 } else {
1300                         /*
1301                          * The headers and data are in a single large buffer. We
1302                          * copy it to a new skb and let it go. This can happen with
1303                          * jumbo mtu on a non-TCP/UDP frame.
1304                          */
1305                         lbq_desc = ql_get_curr_lbuf(rx_ring);
1306                         skb = netdev_alloc_skb(qdev->ndev, length);
1307                         if (skb == NULL) {
1308                                 QPRINTK(qdev, PROBE, DEBUG,
1309                                         "No skb available, drop the packet.\n");
1310                                 return NULL;
1311                         }
1312                         pci_unmap_page(qdev->pdev,
1313                                        pci_unmap_addr(lbq_desc,
1314                                                       mapaddr),
1315                                        pci_unmap_len(lbq_desc, maplen),
1316                                        PCI_DMA_FROMDEVICE);
1317                         skb_reserve(skb, NET_IP_ALIGN);
1318                         QPRINTK(qdev, RX_STATUS, DEBUG,
1319                                 "%d bytes of headers and data in large. Chain page to new skb and pull tail.\n", length);
1320                         skb_fill_page_desc(skb, 0, lbq_desc->p.lbq_page,
1321                                            0, length);
1322                         skb->len += length;
1323                         skb->data_len += length;
1324                         skb->truesize += length;
1325                         length -= length;
1326                         lbq_desc->p.lbq_page = NULL;
1327                         __pskb_pull_tail(skb,
1328                                 (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V) ?
1329                                 VLAN_ETH_HLEN : ETH_HLEN);
1330                 }
1331         } else {
1332                 /*
1333                  * The data is in a chain of large buffers
1334                  * pointed to by a small buffer.  We loop
1335                  * thru and chain them to the our small header
1336                  * buffer's skb.
1337                  * frags:  There are 18 max frags and our small
1338                  *         buffer will hold 32 of them. The thing is,
1339                  *         we'll use 3 max for our 9000 byte jumbo
1340                  *         frames.  If the MTU goes up we could
1341                  *          eventually be in trouble.
1342                  */
1343                 int size, offset, i = 0;
1344                 __le64 *bq, bq_array[8];
1345                 sbq_desc = ql_get_curr_sbuf(rx_ring);
1346                 pci_unmap_single(qdev->pdev,
1347                                  pci_unmap_addr(sbq_desc, mapaddr),
1348                                  pci_unmap_len(sbq_desc, maplen),
1349                                  PCI_DMA_FROMDEVICE);
1350                 if (!(ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS)) {
1351                         /*
1352                          * This is an non TCP/UDP IP frame, so
1353                          * the headers aren't split into a small
1354                          * buffer.  We have to use the small buffer
1355                          * that contains our sg list as our skb to
1356                          * send upstairs. Copy the sg list here to
1357                          * a local buffer and use it to find the
1358                          * pages to chain.
1359                          */
1360                         QPRINTK(qdev, RX_STATUS, DEBUG,
1361                                 "%d bytes of headers & data in chain of large.\n", length);
1362                         skb = sbq_desc->p.skb;
1363                         bq = &bq_array[0];
1364                         memcpy(bq, skb->data, sizeof(bq_array));
1365                         sbq_desc->p.skb = NULL;
1366                         skb_reserve(skb, NET_IP_ALIGN);
1367                 } else {
1368                         QPRINTK(qdev, RX_STATUS, DEBUG,
1369                                 "Headers in small, %d bytes of data in chain of large.\n", length);
1370                         bq = (__le64 *)sbq_desc->p.skb->data;
1371                 }
1372                 while (length > 0) {
1373                         lbq_desc = ql_get_curr_lbuf(rx_ring);
1374                         pci_unmap_page(qdev->pdev,
1375                                        pci_unmap_addr(lbq_desc,
1376                                                       mapaddr),
1377                                        pci_unmap_len(lbq_desc,
1378                                                      maplen),
1379                                        PCI_DMA_FROMDEVICE);
1380                         size = (length < PAGE_SIZE) ? length : PAGE_SIZE;
1381                         offset = 0;
1382
1383                         QPRINTK(qdev, RX_STATUS, DEBUG,
1384                                 "Adding page %d to skb for %d bytes.\n",
1385                                 i, size);
1386                         skb_fill_page_desc(skb, i, lbq_desc->p.lbq_page,
1387                                            offset, size);
1388                         skb->len += size;
1389                         skb->data_len += size;
1390                         skb->truesize += size;
1391                         length -= size;
1392                         lbq_desc->p.lbq_page = NULL;
1393                         bq++;
1394                         i++;
1395                 }
1396                 __pskb_pull_tail(skb, (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V) ?
1397                                 VLAN_ETH_HLEN : ETH_HLEN);
1398         }
1399         return skb;
1400 }
1401
1402 /* Process an inbound completion from an rx ring. */
1403 static void ql_process_mac_rx_intr(struct ql_adapter *qdev,
1404                                    struct rx_ring *rx_ring,
1405                                    struct ib_mac_iocb_rsp *ib_mac_rsp)
1406 {
1407         struct net_device *ndev = qdev->ndev;
1408         struct sk_buff *skb = NULL;
1409
1410         QL_DUMP_IB_MAC_RSP(ib_mac_rsp);
1411
1412         skb = ql_build_rx_skb(qdev, rx_ring, ib_mac_rsp);
1413         if (unlikely(!skb)) {
1414                 QPRINTK(qdev, RX_STATUS, DEBUG,
1415                         "No skb available, drop packet.\n");
1416                 return;
1417         }
1418
1419         prefetch(skb->data);
1420         skb->dev = ndev;
1421         if (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) {
1422                 QPRINTK(qdev, RX_STATUS, DEBUG, "%s%s%s Multicast.\n",
1423                         (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
1424                         IB_MAC_IOCB_RSP_M_HASH ? "Hash" : "",
1425                         (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
1426                         IB_MAC_IOCB_RSP_M_REG ? "Registered" : "",
1427                         (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
1428                         IB_MAC_IOCB_RSP_M_PROM ? "Promiscuous" : "");
1429         }
1430         if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_P) {
1431                 QPRINTK(qdev, RX_STATUS, DEBUG, "Promiscuous Packet.\n");
1432         }
1433         if (ib_mac_rsp->flags1 & (IB_MAC_IOCB_RSP_IE | IB_MAC_IOCB_RSP_TE)) {
1434                 QPRINTK(qdev, RX_STATUS, ERR,
1435                         "Bad checksum for this %s packet.\n",
1436                         ((ib_mac_rsp->
1437                           flags2 & IB_MAC_IOCB_RSP_T) ? "TCP" : "UDP"));
1438                 skb->ip_summed = CHECKSUM_NONE;
1439         } else if (qdev->rx_csum &&
1440                    ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_T) ||
1441                     ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_U) &&
1442                      !(ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_NU)))) {
1443                 QPRINTK(qdev, RX_STATUS, DEBUG, "RX checksum done!\n");
1444                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1445         }
1446         qdev->stats.rx_packets++;
1447         qdev->stats.rx_bytes += skb->len;
1448         skb->protocol = eth_type_trans(skb, ndev);
1449         if (qdev->vlgrp && (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V)) {
1450                 QPRINTK(qdev, RX_STATUS, DEBUG,
1451                         "Passing a VLAN packet upstream.\n");
1452                 vlan_hwaccel_rx(skb, qdev->vlgrp,
1453                                 le16_to_cpu(ib_mac_rsp->vlan_id));
1454         } else {
1455                 QPRINTK(qdev, RX_STATUS, DEBUG,
1456                         "Passing a normal packet upstream.\n");
1457                 netif_rx(skb);
1458         }
1459 }
1460
1461 /* Process an outbound completion from an rx ring. */
1462 static void ql_process_mac_tx_intr(struct ql_adapter *qdev,
1463                                    struct ob_mac_iocb_rsp *mac_rsp)
1464 {
1465         struct tx_ring *tx_ring;
1466         struct tx_ring_desc *tx_ring_desc;
1467
1468         QL_DUMP_OB_MAC_RSP(mac_rsp);
1469         tx_ring = &qdev->tx_ring[mac_rsp->txq_idx];
1470         tx_ring_desc = &tx_ring->q[mac_rsp->tid];
1471         ql_unmap_send(qdev, tx_ring_desc, tx_ring_desc->map_cnt);
1472         qdev->stats.tx_bytes += tx_ring_desc->map_cnt;
1473         qdev->stats.tx_packets++;
1474         dev_kfree_skb(tx_ring_desc->skb);
1475         tx_ring_desc->skb = NULL;
1476
1477         if (unlikely(mac_rsp->flags1 & (OB_MAC_IOCB_RSP_E |
1478                                         OB_MAC_IOCB_RSP_S |
1479                                         OB_MAC_IOCB_RSP_L |
1480                                         OB_MAC_IOCB_RSP_P | OB_MAC_IOCB_RSP_B))) {
1481                 if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_E) {
1482                         QPRINTK(qdev, TX_DONE, WARNING,
1483                                 "Total descriptor length did not match transfer length.\n");
1484                 }
1485                 if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_S) {
1486                         QPRINTK(qdev, TX_DONE, WARNING,
1487                                 "Frame too short to be legal, not sent.\n");
1488                 }
1489                 if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_L) {
1490                         QPRINTK(qdev, TX_DONE, WARNING,
1491                                 "Frame too long, but sent anyway.\n");
1492                 }
1493                 if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_B) {
1494                         QPRINTK(qdev, TX_DONE, WARNING,
1495                                 "PCI backplane error. Frame not sent.\n");
1496                 }
1497         }
1498         atomic_inc(&tx_ring->tx_count);
1499 }
1500
1501 /* Fire up a handler to reset the MPI processor. */
1502 void ql_queue_fw_error(struct ql_adapter *qdev)
1503 {
1504         netif_stop_queue(qdev->ndev);
1505         netif_carrier_off(qdev->ndev);
1506         queue_delayed_work(qdev->workqueue, &qdev->mpi_reset_work, 0);
1507 }
1508
1509 void ql_queue_asic_error(struct ql_adapter *qdev)
1510 {
1511         netif_stop_queue(qdev->ndev);
1512         netif_carrier_off(qdev->ndev);
1513         ql_disable_interrupts(qdev);
1514         queue_delayed_work(qdev->workqueue, &qdev->asic_reset_work, 0);
1515 }
1516
1517 static void ql_process_chip_ae_intr(struct ql_adapter *qdev,
1518                                     struct ib_ae_iocb_rsp *ib_ae_rsp)
1519 {
1520         switch (ib_ae_rsp->event) {
1521         case MGMT_ERR_EVENT:
1522                 QPRINTK(qdev, RX_ERR, ERR,
1523                         "Management Processor Fatal Error.\n");
1524                 ql_queue_fw_error(qdev);
1525                 return;
1526
1527         case CAM_LOOKUP_ERR_EVENT:
1528                 QPRINTK(qdev, LINK, ERR,
1529                         "Multiple CAM hits lookup occurred.\n");
1530                 QPRINTK(qdev, DRV, ERR, "This event shouldn't occur.\n");
1531                 ql_queue_asic_error(qdev);
1532                 return;
1533
1534         case SOFT_ECC_ERROR_EVENT:
1535                 QPRINTK(qdev, RX_ERR, ERR, "Soft ECC error detected.\n");
1536                 ql_queue_asic_error(qdev);
1537                 break;
1538
1539         case PCI_ERR_ANON_BUF_RD:
1540                 QPRINTK(qdev, RX_ERR, ERR,
1541                         "PCI error occurred when reading anonymous buffers from rx_ring %d.\n",
1542                         ib_ae_rsp->q_id);
1543                 ql_queue_asic_error(qdev);
1544                 break;
1545
1546         default:
1547                 QPRINTK(qdev, DRV, ERR, "Unexpected event %d.\n",
1548                         ib_ae_rsp->event);
1549                 ql_queue_asic_error(qdev);
1550                 break;
1551         }
1552 }
1553
1554 static int ql_clean_outbound_rx_ring(struct rx_ring *rx_ring)
1555 {
1556         struct ql_adapter *qdev = rx_ring->qdev;
1557         u32 prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
1558         struct ob_mac_iocb_rsp *net_rsp = NULL;
1559         int count = 0;
1560
1561         /* While there are entries in the completion queue. */
1562         while (prod != rx_ring->cnsmr_idx) {
1563
1564                 QPRINTK(qdev, RX_STATUS, DEBUG,
1565                         "cq_id = %d, prod = %d, cnsmr = %d.\n.", rx_ring->cq_id,
1566                         prod, rx_ring->cnsmr_idx);
1567
1568                 net_rsp = (struct ob_mac_iocb_rsp *)rx_ring->curr_entry;
1569                 rmb();
1570                 switch (net_rsp->opcode) {
1571
1572                 case OPCODE_OB_MAC_TSO_IOCB:
1573                 case OPCODE_OB_MAC_IOCB:
1574                         ql_process_mac_tx_intr(qdev, net_rsp);
1575                         break;
1576                 default:
1577                         QPRINTK(qdev, RX_STATUS, DEBUG,
1578                                 "Hit default case, not handled! dropping the packet, opcode = %x.\n",
1579                                 net_rsp->opcode);
1580                 }
1581                 count++;
1582                 ql_update_cq(rx_ring);
1583                 prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
1584         }
1585         ql_write_cq_idx(rx_ring);
1586         if (netif_queue_stopped(qdev->ndev) && net_rsp != NULL) {
1587                 struct tx_ring *tx_ring = &qdev->tx_ring[net_rsp->txq_idx];
1588                 if (atomic_read(&tx_ring->queue_stopped) &&
1589                     (atomic_read(&tx_ring->tx_count) > (tx_ring->wq_len / 4)))
1590                         /*
1591                          * The queue got stopped because the tx_ring was full.
1592                          * Wake it up, because it's now at least 25% empty.
1593                          */
1594                         netif_wake_queue(qdev->ndev);
1595         }
1596
1597         return count;
1598 }
1599
1600 static int ql_clean_inbound_rx_ring(struct rx_ring *rx_ring, int budget)
1601 {
1602         struct ql_adapter *qdev = rx_ring->qdev;
1603         u32 prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
1604         struct ql_net_rsp_iocb *net_rsp;
1605         int count = 0;
1606
1607         /* While there are entries in the completion queue. */
1608         while (prod != rx_ring->cnsmr_idx) {
1609
1610                 QPRINTK(qdev, RX_STATUS, DEBUG,
1611                         "cq_id = %d, prod = %d, cnsmr = %d.\n.", rx_ring->cq_id,
1612                         prod, rx_ring->cnsmr_idx);
1613
1614                 net_rsp = rx_ring->curr_entry;
1615                 rmb();
1616                 switch (net_rsp->opcode) {
1617                 case OPCODE_IB_MAC_IOCB:
1618                         ql_process_mac_rx_intr(qdev, rx_ring,
1619                                                (struct ib_mac_iocb_rsp *)
1620                                                net_rsp);
1621                         break;
1622
1623                 case OPCODE_IB_AE_IOCB:
1624                         ql_process_chip_ae_intr(qdev, (struct ib_ae_iocb_rsp *)
1625                                                 net_rsp);
1626                         break;
1627                 default:
1628                         {
1629                                 QPRINTK(qdev, RX_STATUS, DEBUG,
1630                                         "Hit default case, not handled! dropping the packet, opcode = %x.\n",
1631                                         net_rsp->opcode);
1632                         }
1633                 }
1634                 count++;
1635                 ql_update_cq(rx_ring);
1636                 prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
1637                 if (count == budget)
1638                         break;
1639         }
1640         ql_update_buffer_queues(qdev, rx_ring);
1641         ql_write_cq_idx(rx_ring);
1642         return count;
1643 }
1644
1645 static int ql_napi_poll_msix(struct napi_struct *napi, int budget)
1646 {
1647         struct rx_ring *rx_ring = container_of(napi, struct rx_ring, napi);
1648         struct ql_adapter *qdev = rx_ring->qdev;
1649         int work_done = ql_clean_inbound_rx_ring(rx_ring, budget);
1650
1651         QPRINTK(qdev, RX_STATUS, DEBUG, "Enter, NAPI POLL cq_id = %d.\n",
1652                 rx_ring->cq_id);
1653
1654         if (work_done < budget) {
1655                 __netif_rx_complete(napi);
1656                 ql_enable_completion_interrupt(qdev, rx_ring->irq);
1657         }
1658         return work_done;
1659 }
1660
1661 static void ql_vlan_rx_register(struct net_device *ndev, struct vlan_group *grp)
1662 {
1663         struct ql_adapter *qdev = netdev_priv(ndev);
1664
1665         qdev->vlgrp = grp;
1666         if (grp) {
1667                 QPRINTK(qdev, IFUP, DEBUG, "Turning on VLAN in NIC_RCV_CFG.\n");
1668                 ql_write32(qdev, NIC_RCV_CFG, NIC_RCV_CFG_VLAN_MASK |
1669                            NIC_RCV_CFG_VLAN_MATCH_AND_NON);
1670         } else {
1671                 QPRINTK(qdev, IFUP, DEBUG,
1672                         "Turning off VLAN in NIC_RCV_CFG.\n");
1673                 ql_write32(qdev, NIC_RCV_CFG, NIC_RCV_CFG_VLAN_MASK);
1674         }
1675 }
1676
1677 static void ql_vlan_rx_add_vid(struct net_device *ndev, u16 vid)
1678 {
1679         struct ql_adapter *qdev = netdev_priv(ndev);
1680         u32 enable_bit = MAC_ADDR_E;
1681
1682         spin_lock(&qdev->hw_lock);
1683         if (ql_set_mac_addr_reg
1684             (qdev, (u8 *) &enable_bit, MAC_ADDR_TYPE_VLAN, vid)) {
1685                 QPRINTK(qdev, IFUP, ERR, "Failed to init vlan address.\n");
1686         }
1687         spin_unlock(&qdev->hw_lock);
1688 }
1689
1690 static void ql_vlan_rx_kill_vid(struct net_device *ndev, u16 vid)
1691 {
1692         struct ql_adapter *qdev = netdev_priv(ndev);
1693         u32 enable_bit = 0;
1694
1695         spin_lock(&qdev->hw_lock);
1696         if (ql_set_mac_addr_reg
1697             (qdev, (u8 *) &enable_bit, MAC_ADDR_TYPE_VLAN, vid)) {
1698                 QPRINTK(qdev, IFUP, ERR, "Failed to clear vlan address.\n");
1699         }
1700         spin_unlock(&qdev->hw_lock);
1701
1702 }
1703
1704 /* Worker thread to process a given rx_ring that is dedicated
1705  * to outbound completions.
1706  */
1707 static void ql_tx_clean(struct work_struct *work)
1708 {
1709         struct rx_ring *rx_ring =
1710             container_of(work, struct rx_ring, rx_work.work);
1711         ql_clean_outbound_rx_ring(rx_ring);
1712         ql_enable_completion_interrupt(rx_ring->qdev, rx_ring->irq);
1713
1714 }
1715
1716 /* Worker thread to process a given rx_ring that is dedicated
1717  * to inbound completions.
1718  */
1719 static void ql_rx_clean(struct work_struct *work)
1720 {
1721         struct rx_ring *rx_ring =
1722             container_of(work, struct rx_ring, rx_work.work);
1723         ql_clean_inbound_rx_ring(rx_ring, 64);
1724         ql_enable_completion_interrupt(rx_ring->qdev, rx_ring->irq);
1725 }
1726
1727 /* MSI-X Multiple Vector Interrupt Handler for outbound completions. */
1728 static irqreturn_t qlge_msix_tx_isr(int irq, void *dev_id)
1729 {
1730         struct rx_ring *rx_ring = dev_id;
1731         queue_delayed_work_on(rx_ring->cpu, rx_ring->qdev->q_workqueue,
1732                               &rx_ring->rx_work, 0);
1733         return IRQ_HANDLED;
1734 }
1735
1736 /* MSI-X Multiple Vector Interrupt Handler for inbound completions. */
1737 static irqreturn_t qlge_msix_rx_isr(int irq, void *dev_id)
1738 {
1739         struct rx_ring *rx_ring = dev_id;
1740         netif_rx_schedule(&rx_ring->napi);
1741         return IRQ_HANDLED;
1742 }
1743
1744 /* This handles a fatal error, MPI activity, and the default
1745  * rx_ring in an MSI-X multiple vector environment.
1746  * In MSI/Legacy environment it also process the rest of
1747  * the rx_rings.
1748  */
1749 static irqreturn_t qlge_isr(int irq, void *dev_id)
1750 {
1751         struct rx_ring *rx_ring = dev_id;
1752         struct ql_adapter *qdev = rx_ring->qdev;
1753         struct intr_context *intr_context = &qdev->intr_context[0];
1754         u32 var;
1755         int i;
1756         int work_done = 0;
1757
1758         spin_lock(&qdev->hw_lock);
1759         if (atomic_read(&qdev->intr_context[0].irq_cnt)) {
1760                 QPRINTK(qdev, INTR, DEBUG, "Shared Interrupt, Not ours!\n");
1761                 spin_unlock(&qdev->hw_lock);
1762                 return IRQ_NONE;
1763         }
1764         spin_unlock(&qdev->hw_lock);
1765
1766         var = ql_disable_completion_interrupt(qdev, intr_context->intr);
1767
1768         /*
1769          * Check for fatal error.
1770          */
1771         if (var & STS_FE) {
1772                 ql_queue_asic_error(qdev);
1773                 QPRINTK(qdev, INTR, ERR, "Got fatal error, STS = %x.\n", var);
1774                 var = ql_read32(qdev, ERR_STS);
1775                 QPRINTK(qdev, INTR, ERR,
1776                         "Resetting chip. Error Status Register = 0x%x\n", var);
1777                 return IRQ_HANDLED;
1778         }
1779
1780         /*
1781          * Check MPI processor activity.
1782          */
1783         if (var & STS_PI) {
1784                 /*
1785                  * We've got an async event or mailbox completion.
1786                  * Handle it and clear the source of the interrupt.
1787                  */
1788                 QPRINTK(qdev, INTR, ERR, "Got MPI processor interrupt.\n");
1789                 ql_disable_completion_interrupt(qdev, intr_context->intr);
1790                 queue_delayed_work_on(smp_processor_id(), qdev->workqueue,
1791                                       &qdev->mpi_work, 0);
1792                 work_done++;
1793         }
1794
1795         /*
1796          * Check the default queue and wake handler if active.
1797          */
1798         rx_ring = &qdev->rx_ring[0];
1799         if (ql_read_sh_reg(rx_ring->prod_idx_sh_reg) != rx_ring->cnsmr_idx) {
1800                 QPRINTK(qdev, INTR, INFO, "Waking handler for rx_ring[0].\n");
1801                 ql_disable_completion_interrupt(qdev, intr_context->intr);
1802                 queue_delayed_work_on(smp_processor_id(), qdev->q_workqueue,
1803                                       &rx_ring->rx_work, 0);
1804                 work_done++;
1805         }
1806
1807         if (!test_bit(QL_MSIX_ENABLED, &qdev->flags)) {
1808                 /*
1809                  * Start the DPC for each active queue.
1810                  */
1811                 for (i = 1; i < qdev->rx_ring_count; i++) {
1812                         rx_ring = &qdev->rx_ring[i];
1813                         if (ql_read_sh_reg(rx_ring->prod_idx_sh_reg) !=
1814                             rx_ring->cnsmr_idx) {
1815                                 QPRINTK(qdev, INTR, INFO,
1816                                         "Waking handler for rx_ring[%d].\n", i);
1817                                 ql_disable_completion_interrupt(qdev,
1818                                                                 intr_context->
1819                                                                 intr);
1820                                 if (i < qdev->rss_ring_first_cq_id)
1821                                         queue_delayed_work_on(rx_ring->cpu,
1822                                                               qdev->q_workqueue,
1823                                                               &rx_ring->rx_work,
1824                                                               0);
1825                                 else
1826                                         netif_rx_schedule(&rx_ring->napi);
1827                                 work_done++;
1828                         }
1829                 }
1830         }
1831         ql_enable_completion_interrupt(qdev, intr_context->intr);
1832         return work_done ? IRQ_HANDLED : IRQ_NONE;
1833 }
1834
1835 static int ql_tso(struct sk_buff *skb, struct ob_mac_tso_iocb_req *mac_iocb_ptr)
1836 {
1837
1838         if (skb_is_gso(skb)) {
1839                 int err;
1840                 if (skb_header_cloned(skb)) {
1841                         err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
1842                         if (err)
1843                                 return err;
1844                 }
1845
1846                 mac_iocb_ptr->opcode = OPCODE_OB_MAC_TSO_IOCB;
1847                 mac_iocb_ptr->flags3 |= OB_MAC_TSO_IOCB_IC;
1848                 mac_iocb_ptr->frame_len = cpu_to_le32((u32) skb->len);
1849                 mac_iocb_ptr->total_hdrs_len =
1850                     cpu_to_le16(skb_transport_offset(skb) + tcp_hdrlen(skb));
1851                 mac_iocb_ptr->net_trans_offset =
1852                     cpu_to_le16(skb_network_offset(skb) |
1853                                 skb_transport_offset(skb)
1854                                 << OB_MAC_TRANSPORT_HDR_SHIFT);
1855                 mac_iocb_ptr->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1856                 mac_iocb_ptr->flags2 |= OB_MAC_TSO_IOCB_LSO;
1857                 if (likely(skb->protocol == htons(ETH_P_IP))) {
1858                         struct iphdr *iph = ip_hdr(skb);
1859                         iph->check = 0;
1860                         mac_iocb_ptr->flags1 |= OB_MAC_TSO_IOCB_IP4;
1861                         tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
1862                                                                  iph->daddr, 0,
1863                                                                  IPPROTO_TCP,
1864                                                                  0);
1865                 } else if (skb->protocol == htons(ETH_P_IPV6)) {
1866                         mac_iocb_ptr->flags1 |= OB_MAC_TSO_IOCB_IP6;
1867                         tcp_hdr(skb)->check =
1868                             ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
1869                                              &ipv6_hdr(skb)->daddr,
1870                                              0, IPPROTO_TCP, 0);
1871                 }
1872                 return 1;
1873         }
1874         return 0;
1875 }
1876
1877 static void ql_hw_csum_setup(struct sk_buff *skb,
1878                              struct ob_mac_tso_iocb_req *mac_iocb_ptr)
1879 {
1880         int len;
1881         struct iphdr *iph = ip_hdr(skb);
1882         __sum16 *check;
1883         mac_iocb_ptr->opcode = OPCODE_OB_MAC_TSO_IOCB;
1884         mac_iocb_ptr->frame_len = cpu_to_le32((u32) skb->len);
1885         mac_iocb_ptr->net_trans_offset =
1886                 cpu_to_le16(skb_network_offset(skb) |
1887                 skb_transport_offset(skb) << OB_MAC_TRANSPORT_HDR_SHIFT);
1888
1889         mac_iocb_ptr->flags1 |= OB_MAC_TSO_IOCB_IP4;
1890         len = (ntohs(iph->tot_len) - (iph->ihl << 2));
1891         if (likely(iph->protocol == IPPROTO_TCP)) {
1892                 check = &(tcp_hdr(skb)->check);
1893                 mac_iocb_ptr->flags2 |= OB_MAC_TSO_IOCB_TC;
1894                 mac_iocb_ptr->total_hdrs_len =
1895                     cpu_to_le16(skb_transport_offset(skb) +
1896                                 (tcp_hdr(skb)->doff << 2));
1897         } else {
1898                 check = &(udp_hdr(skb)->check);
1899                 mac_iocb_ptr->flags2 |= OB_MAC_TSO_IOCB_UC;
1900                 mac_iocb_ptr->total_hdrs_len =
1901                     cpu_to_le16(skb_transport_offset(skb) +
1902                                 sizeof(struct udphdr));
1903         }
1904         *check = ~csum_tcpudp_magic(iph->saddr,
1905                                     iph->daddr, len, iph->protocol, 0);
1906 }
1907
1908 static int qlge_send(struct sk_buff *skb, struct net_device *ndev)
1909 {
1910         struct tx_ring_desc *tx_ring_desc;
1911         struct ob_mac_iocb_req *mac_iocb_ptr;
1912         struct ql_adapter *qdev = netdev_priv(ndev);
1913         int tso;
1914         struct tx_ring *tx_ring;
1915         u32 tx_ring_idx = (u32) QL_TXQ_IDX(qdev, skb);
1916
1917         tx_ring = &qdev->tx_ring[tx_ring_idx];
1918
1919         if (unlikely(atomic_read(&tx_ring->tx_count) < 2)) {
1920                 QPRINTK(qdev, TX_QUEUED, INFO,
1921                         "%s: shutting down tx queue %d du to lack of resources.\n",
1922                         __func__, tx_ring_idx);
1923                 netif_stop_queue(ndev);
1924                 atomic_inc(&tx_ring->queue_stopped);
1925                 return NETDEV_TX_BUSY;
1926         }
1927         tx_ring_desc = &tx_ring->q[tx_ring->prod_idx];
1928         mac_iocb_ptr = tx_ring_desc->queue_entry;
1929         memset((void *)mac_iocb_ptr, 0, sizeof(mac_iocb_ptr));
1930         if (ql_map_send(qdev, mac_iocb_ptr, skb, tx_ring_desc) != NETDEV_TX_OK) {
1931                 QPRINTK(qdev, TX_QUEUED, ERR, "Could not map the segments.\n");
1932                 return NETDEV_TX_BUSY;
1933         }
1934
1935         mac_iocb_ptr->opcode = OPCODE_OB_MAC_IOCB;
1936         mac_iocb_ptr->tid = tx_ring_desc->index;
1937         /* We use the upper 32-bits to store the tx queue for this IO.
1938          * When we get the completion we can use it to establish the context.
1939          */
1940         mac_iocb_ptr->txq_idx = tx_ring_idx;
1941         tx_ring_desc->skb = skb;
1942
1943         mac_iocb_ptr->frame_len = cpu_to_le16((u16) skb->len);
1944
1945         if (qdev->vlgrp && vlan_tx_tag_present(skb)) {
1946                 QPRINTK(qdev, TX_QUEUED, DEBUG, "Adding a vlan tag %d.\n",
1947                         vlan_tx_tag_get(skb));
1948                 mac_iocb_ptr->flags3 |= OB_MAC_IOCB_V;
1949                 mac_iocb_ptr->vlan_tci = cpu_to_le16(vlan_tx_tag_get(skb));
1950         }
1951         tso = ql_tso(skb, (struct ob_mac_tso_iocb_req *)mac_iocb_ptr);
1952         if (tso < 0) {
1953                 dev_kfree_skb_any(skb);
1954                 return NETDEV_TX_OK;
1955         } else if (unlikely(!tso) && (skb->ip_summed == CHECKSUM_PARTIAL)) {
1956                 ql_hw_csum_setup(skb,
1957                                  (struct ob_mac_tso_iocb_req *)mac_iocb_ptr);
1958         }
1959         QL_DUMP_OB_MAC_IOCB(mac_iocb_ptr);
1960         tx_ring->prod_idx++;
1961         if (tx_ring->prod_idx == tx_ring->wq_len)
1962                 tx_ring->prod_idx = 0;
1963         wmb();
1964
1965         ql_write_db_reg(tx_ring->prod_idx, tx_ring->prod_idx_db_reg);
1966         ndev->trans_start = jiffies;
1967         QPRINTK(qdev, TX_QUEUED, DEBUG, "tx queued, slot %d, len %d\n",
1968                 tx_ring->prod_idx, skb->len);
1969
1970         atomic_dec(&tx_ring->tx_count);
1971         return NETDEV_TX_OK;
1972 }
1973
1974 static void ql_free_shadow_space(struct ql_adapter *qdev)
1975 {
1976         if (qdev->rx_ring_shadow_reg_area) {
1977                 pci_free_consistent(qdev->pdev,
1978                                     PAGE_SIZE,
1979                                     qdev->rx_ring_shadow_reg_area,
1980                                     qdev->rx_ring_shadow_reg_dma);
1981                 qdev->rx_ring_shadow_reg_area = NULL;
1982         }
1983         if (qdev->tx_ring_shadow_reg_area) {
1984                 pci_free_consistent(qdev->pdev,
1985                                     PAGE_SIZE,
1986                                     qdev->tx_ring_shadow_reg_area,
1987                                     qdev->tx_ring_shadow_reg_dma);
1988                 qdev->tx_ring_shadow_reg_area = NULL;
1989         }
1990 }
1991
1992 static int ql_alloc_shadow_space(struct ql_adapter *qdev)
1993 {
1994         qdev->rx_ring_shadow_reg_area =
1995             pci_alloc_consistent(qdev->pdev,
1996                                  PAGE_SIZE, &qdev->rx_ring_shadow_reg_dma);
1997         if (qdev->rx_ring_shadow_reg_area == NULL) {
1998                 QPRINTK(qdev, IFUP, ERR,
1999                         "Allocation of RX shadow space failed.\n");
2000                 return -ENOMEM;
2001         }
2002         qdev->tx_ring_shadow_reg_area =
2003             pci_alloc_consistent(qdev->pdev, PAGE_SIZE,
2004                                  &qdev->tx_ring_shadow_reg_dma);
2005         if (qdev->tx_ring_shadow_reg_area == NULL) {
2006                 QPRINTK(qdev, IFUP, ERR,
2007                         "Allocation of TX shadow space failed.\n");
2008                 goto err_wqp_sh_area;
2009         }
2010         return 0;
2011
2012 err_wqp_sh_area:
2013         pci_free_consistent(qdev->pdev,
2014                             PAGE_SIZE,
2015                             qdev->rx_ring_shadow_reg_area,
2016                             qdev->rx_ring_shadow_reg_dma);
2017         return -ENOMEM;
2018 }
2019
2020 static void ql_init_tx_ring(struct ql_adapter *qdev, struct tx_ring *tx_ring)
2021 {
2022         struct tx_ring_desc *tx_ring_desc;
2023         int i;
2024         struct ob_mac_iocb_req *mac_iocb_ptr;
2025
2026         mac_iocb_ptr = tx_ring->wq_base;
2027         tx_ring_desc = tx_ring->q;
2028         for (i = 0; i < tx_ring->wq_len; i++) {
2029                 tx_ring_desc->index = i;
2030                 tx_ring_desc->skb = NULL;
2031                 tx_ring_desc->queue_entry = mac_iocb_ptr;
2032                 mac_iocb_ptr++;
2033                 tx_ring_desc++;
2034         }
2035         atomic_set(&tx_ring->tx_count, tx_ring->wq_len);
2036         atomic_set(&tx_ring->queue_stopped, 0);
2037 }
2038
2039 static void ql_free_tx_resources(struct ql_adapter *qdev,
2040                                  struct tx_ring *tx_ring)
2041 {
2042         if (tx_ring->wq_base) {
2043                 pci_free_consistent(qdev->pdev, tx_ring->wq_size,
2044                                     tx_ring->wq_base, tx_ring->wq_base_dma);
2045                 tx_ring->wq_base = NULL;
2046         }
2047         kfree(tx_ring->q);
2048         tx_ring->q = NULL;
2049 }
2050
2051 static int ql_alloc_tx_resources(struct ql_adapter *qdev,
2052                                  struct tx_ring *tx_ring)
2053 {
2054         tx_ring->wq_base =
2055             pci_alloc_consistent(qdev->pdev, tx_ring->wq_size,
2056                                  &tx_ring->wq_base_dma);
2057
2058         if ((tx_ring->wq_base == NULL)
2059             || tx_ring->wq_base_dma & (tx_ring->wq_size - 1)) {
2060                 QPRINTK(qdev, IFUP, ERR, "tx_ring alloc failed.\n");
2061                 return -ENOMEM;
2062         }
2063         tx_ring->q =
2064             kmalloc(tx_ring->wq_len * sizeof(struct tx_ring_desc), GFP_KERNEL);
2065         if (tx_ring->q == NULL)
2066                 goto err;
2067
2068         return 0;
2069 err:
2070         pci_free_consistent(qdev->pdev, tx_ring->wq_size,
2071                             tx_ring->wq_base, tx_ring->wq_base_dma);
2072         return -ENOMEM;
2073 }
2074
2075 static void ql_free_lbq_buffers(struct ql_adapter *qdev, struct rx_ring *rx_ring)
2076 {
2077         int i;
2078         struct bq_desc *lbq_desc;
2079
2080         for (i = 0; i < rx_ring->lbq_len; i++) {
2081                 lbq_desc = &rx_ring->lbq[i];
2082                 if (lbq_desc->p.lbq_page) {
2083                         pci_unmap_page(qdev->pdev,
2084                                        pci_unmap_addr(lbq_desc, mapaddr),
2085                                        pci_unmap_len(lbq_desc, maplen),
2086                                        PCI_DMA_FROMDEVICE);
2087
2088                         put_page(lbq_desc->p.lbq_page);
2089                         lbq_desc->p.lbq_page = NULL;
2090                 }
2091         }
2092 }
2093
2094 /*
2095  * Allocate and map a page for each element of the lbq.
2096  */
2097 static int ql_alloc_lbq_buffers(struct ql_adapter *qdev,
2098                                 struct rx_ring *rx_ring)
2099 {
2100         int i;
2101         struct bq_desc *lbq_desc;
2102         u64 map;
2103         __le64 *bq = rx_ring->lbq_base;
2104
2105         for (i = 0; i < rx_ring->lbq_len; i++) {
2106                 lbq_desc = &rx_ring->lbq[i];
2107                 memset(lbq_desc, 0, sizeof(lbq_desc));
2108                 lbq_desc->addr = bq;
2109                 lbq_desc->index = i;
2110                 lbq_desc->p.lbq_page = alloc_page(GFP_ATOMIC);
2111                 if (unlikely(!lbq_desc->p.lbq_page)) {
2112                         QPRINTK(qdev, IFUP, ERR, "failed alloc_page().\n");
2113                         goto mem_error;
2114                 } else {
2115                         map = pci_map_page(qdev->pdev,
2116                                            lbq_desc->p.lbq_page,
2117                                            0, PAGE_SIZE, PCI_DMA_FROMDEVICE);
2118                         if (pci_dma_mapping_error(qdev->pdev, map)) {
2119                                 QPRINTK(qdev, IFUP, ERR,
2120                                         "PCI mapping failed.\n");
2121                                 goto mem_error;
2122                         }
2123                         pci_unmap_addr_set(lbq_desc, mapaddr, map);
2124                         pci_unmap_len_set(lbq_desc, maplen, PAGE_SIZE);
2125                         *lbq_desc->addr = cpu_to_le64(map);
2126                 }
2127                 bq++;
2128         }
2129         return 0;
2130 mem_error:
2131         ql_free_lbq_buffers(qdev, rx_ring);
2132         return -ENOMEM;
2133 }
2134
2135 static void ql_free_sbq_buffers(struct ql_adapter *qdev, struct rx_ring *rx_ring)
2136 {
2137         int i;
2138         struct bq_desc *sbq_desc;
2139
2140         for (i = 0; i < rx_ring->sbq_len; i++) {
2141                 sbq_desc = &rx_ring->sbq[i];
2142                 if (sbq_desc == NULL) {
2143                         QPRINTK(qdev, IFUP, ERR, "sbq_desc %d is NULL.\n", i);
2144                         return;
2145                 }
2146                 if (sbq_desc->p.skb) {
2147                         pci_unmap_single(qdev->pdev,
2148                                          pci_unmap_addr(sbq_desc, mapaddr),
2149                                          pci_unmap_len(sbq_desc, maplen),
2150                                          PCI_DMA_FROMDEVICE);
2151                         dev_kfree_skb(sbq_desc->p.skb);
2152                         sbq_desc->p.skb = NULL;
2153                 }
2154         }
2155 }
2156
2157 /* Allocate and map an skb for each element of the sbq. */
2158 static int ql_alloc_sbq_buffers(struct ql_adapter *qdev,
2159                                 struct rx_ring *rx_ring)
2160 {
2161         int i;
2162         struct bq_desc *sbq_desc;
2163         struct sk_buff *skb;
2164         u64 map;
2165         __le64 *bq = rx_ring->sbq_base;
2166
2167         for (i = 0; i < rx_ring->sbq_len; i++) {
2168                 sbq_desc = &rx_ring->sbq[i];
2169                 memset(sbq_desc, 0, sizeof(sbq_desc));
2170                 sbq_desc->index = i;
2171                 sbq_desc->addr = bq;
2172                 skb = netdev_alloc_skb(qdev->ndev, rx_ring->sbq_buf_size);
2173                 if (unlikely(!skb)) {
2174                         /* Better luck next round */
2175                         QPRINTK(qdev, IFUP, ERR,
2176                                 "small buff alloc failed for %d bytes at index %d.\n",
2177                                 rx_ring->sbq_buf_size, i);
2178                         goto mem_err;
2179                 }
2180                 skb_reserve(skb, QLGE_SB_PAD);
2181                 sbq_desc->p.skb = skb;
2182                 /*
2183                  * Map only half the buffer. Because the
2184                  * other half may get some data copied to it
2185                  * when the completion arrives.
2186                  */
2187                 map = pci_map_single(qdev->pdev,
2188                                      skb->data,
2189                                      rx_ring->sbq_buf_size / 2,
2190                                      PCI_DMA_FROMDEVICE);
2191                 if (pci_dma_mapping_error(qdev->pdev, map)) {
2192                         QPRINTK(qdev, IFUP, ERR, "PCI mapping failed.\n");
2193                         goto mem_err;
2194                 }
2195                 pci_unmap_addr_set(sbq_desc, mapaddr, map);
2196                 pci_unmap_len_set(sbq_desc, maplen, rx_ring->sbq_buf_size / 2);
2197                 *sbq_desc->addr = cpu_to_le64(map);
2198                 bq++;
2199         }
2200         return 0;
2201 mem_err:
2202         ql_free_sbq_buffers(qdev, rx_ring);
2203         return -ENOMEM;
2204 }
2205
2206 static void ql_free_rx_resources(struct ql_adapter *qdev,
2207                                  struct rx_ring *rx_ring)
2208 {
2209         if (rx_ring->sbq_len)
2210                 ql_free_sbq_buffers(qdev, rx_ring);
2211         if (rx_ring->lbq_len)
2212                 ql_free_lbq_buffers(qdev, rx_ring);
2213
2214         /* Free the small buffer queue. */
2215         if (rx_ring->sbq_base) {
2216                 pci_free_consistent(qdev->pdev,
2217                                     rx_ring->sbq_size,
2218                                     rx_ring->sbq_base, rx_ring->sbq_base_dma);
2219                 rx_ring->sbq_base = NULL;
2220         }
2221
2222         /* Free the small buffer queue control blocks. */
2223         kfree(rx_ring->sbq);
2224         rx_ring->sbq = NULL;
2225
2226         /* Free the large buffer queue. */
2227         if (rx_ring->lbq_base) {
2228                 pci_free_consistent(qdev->pdev,
2229                                     rx_ring->lbq_size,
2230                                     rx_ring->lbq_base, rx_ring->lbq_base_dma);
2231                 rx_ring->lbq_base = NULL;
2232         }
2233
2234         /* Free the large buffer queue control blocks. */
2235         kfree(rx_ring->lbq);
2236         rx_ring->lbq = NULL;
2237
2238         /* Free the rx queue. */
2239         if (rx_ring->cq_base) {
2240                 pci_free_consistent(qdev->pdev,
2241                                     rx_ring->cq_size,
2242                                     rx_ring->cq_base, rx_ring->cq_base_dma);
2243                 rx_ring->cq_base = NULL;
2244         }
2245 }
2246
2247 /* Allocate queues and buffers for this completions queue based
2248  * on the values in the parameter structure. */
2249 static int ql_alloc_rx_resources(struct ql_adapter *qdev,
2250                                  struct rx_ring *rx_ring)
2251 {
2252
2253         /*
2254          * Allocate the completion queue for this rx_ring.
2255          */
2256         rx_ring->cq_base =
2257             pci_alloc_consistent(qdev->pdev, rx_ring->cq_size,
2258                                  &rx_ring->cq_base_dma);
2259
2260         if (rx_ring->cq_base == NULL) {
2261                 QPRINTK(qdev, IFUP, ERR, "rx_ring alloc failed.\n");
2262                 return -ENOMEM;
2263         }
2264
2265         if (rx_ring->sbq_len) {
2266                 /*
2267                  * Allocate small buffer queue.
2268                  */
2269                 rx_ring->sbq_base =
2270                     pci_alloc_consistent(qdev->pdev, rx_ring->sbq_size,
2271                                          &rx_ring->sbq_base_dma);
2272
2273                 if (rx_ring->sbq_base == NULL) {
2274                         QPRINTK(qdev, IFUP, ERR,
2275                                 "Small buffer queue allocation failed.\n");
2276                         goto err_mem;
2277                 }
2278
2279                 /*
2280                  * Allocate small buffer queue control blocks.
2281                  */
2282                 rx_ring->sbq =
2283                     kmalloc(rx_ring->sbq_len * sizeof(struct bq_desc),
2284                             GFP_KERNEL);
2285                 if (rx_ring->sbq == NULL) {
2286                         QPRINTK(qdev, IFUP, ERR,
2287                                 "Small buffer queue control block allocation failed.\n");
2288                         goto err_mem;
2289                 }
2290
2291                 if (ql_alloc_sbq_buffers(qdev, rx_ring)) {
2292                         QPRINTK(qdev, IFUP, ERR,
2293                                 "Small buffer allocation failed.\n");
2294                         goto err_mem;
2295                 }
2296         }
2297
2298         if (rx_ring->lbq_len) {
2299                 /*
2300                  * Allocate large buffer queue.
2301                  */
2302                 rx_ring->lbq_base =
2303                     pci_alloc_consistent(qdev->pdev, rx_ring->lbq_size,
2304                                          &rx_ring->lbq_base_dma);
2305
2306                 if (rx_ring->lbq_base == NULL) {
2307                         QPRINTK(qdev, IFUP, ERR,
2308                                 "Large buffer queue allocation failed.\n");
2309                         goto err_mem;
2310                 }
2311                 /*
2312                  * Allocate large buffer queue control blocks.
2313                  */
2314                 rx_ring->lbq =
2315                     kmalloc(rx_ring->lbq_len * sizeof(struct bq_desc),
2316                             GFP_KERNEL);
2317                 if (rx_ring->lbq == NULL) {
2318                         QPRINTK(qdev, IFUP, ERR,
2319                                 "Large buffer queue control block allocation failed.\n");
2320                         goto err_mem;
2321                 }
2322
2323                 /*
2324                  * Allocate the buffers.
2325                  */
2326                 if (ql_alloc_lbq_buffers(qdev, rx_ring)) {
2327                         QPRINTK(qdev, IFUP, ERR,
2328                                 "Large buffer allocation failed.\n");
2329                         goto err_mem;
2330                 }
2331         }
2332
2333         return 0;
2334
2335 err_mem:
2336         ql_free_rx_resources(qdev, rx_ring);
2337         return -ENOMEM;
2338 }
2339
2340 static void ql_tx_ring_clean(struct ql_adapter *qdev)
2341 {
2342         struct tx_ring *tx_ring;
2343         struct tx_ring_desc *tx_ring_desc;
2344         int i, j;
2345
2346         /*
2347          * Loop through all queues and free
2348          * any resources.
2349          */
2350         for (j = 0; j < qdev->tx_ring_count; j++) {
2351                 tx_ring = &qdev->tx_ring[j];
2352                 for (i = 0; i < tx_ring->wq_len; i++) {
2353                         tx_ring_desc = &tx_ring->q[i];
2354                         if (tx_ring_desc && tx_ring_desc->skb) {
2355                                 QPRINTK(qdev, IFDOWN, ERR,
2356                                 "Freeing lost SKB %p, from queue %d, index %d.\n",
2357                                         tx_ring_desc->skb, j,
2358                                         tx_ring_desc->index);
2359                                 ql_unmap_send(qdev, tx_ring_desc,
2360                                               tx_ring_desc->map_cnt);
2361                                 dev_kfree_skb(tx_ring_desc->skb);
2362                                 tx_ring_desc->skb = NULL;
2363                         }
2364                 }
2365         }
2366 }
2367
2368 static void ql_free_mem_resources(struct ql_adapter *qdev)
2369 {
2370         int i;
2371
2372         for (i = 0; i < qdev->tx_ring_count; i++)
2373                 ql_free_tx_resources(qdev, &qdev->tx_ring[i]);
2374         for (i = 0; i < qdev->rx_ring_count; i++)
2375                 ql_free_rx_resources(qdev, &qdev->rx_ring[i]);
2376         ql_free_shadow_space(qdev);
2377 }
2378
2379 static int ql_alloc_mem_resources(struct ql_adapter *qdev)
2380 {
2381         int i;
2382
2383         /* Allocate space for our shadow registers and such. */
2384         if (ql_alloc_shadow_space(qdev))
2385                 return -ENOMEM;
2386
2387         for (i = 0; i < qdev->rx_ring_count; i++) {
2388                 if (ql_alloc_rx_resources(qdev, &qdev->rx_ring[i]) != 0) {
2389                         QPRINTK(qdev, IFUP, ERR,
2390                                 "RX resource allocation failed.\n");
2391                         goto err_mem;
2392                 }
2393         }
2394         /* Allocate tx queue resources */
2395         for (i = 0; i < qdev->tx_ring_count; i++) {
2396                 if (ql_alloc_tx_resources(qdev, &qdev->tx_ring[i]) != 0) {
2397                         QPRINTK(qdev, IFUP, ERR,
2398                                 "TX resource allocation failed.\n");
2399                         goto err_mem;
2400                 }
2401         }
2402         return 0;
2403
2404 err_mem:
2405         ql_free_mem_resources(qdev);
2406         return -ENOMEM;
2407 }
2408
2409 /* Set up the rx ring control block and pass it to the chip.
2410  * The control block is defined as
2411  * "Completion Queue Initialization Control Block", or cqicb.
2412  */
2413 static int ql_start_rx_ring(struct ql_adapter *qdev, struct rx_ring *rx_ring)
2414 {
2415         struct cqicb *cqicb = &rx_ring->cqicb;
2416         void *shadow_reg = qdev->rx_ring_shadow_reg_area +
2417             (rx_ring->cq_id * sizeof(u64) * 4);
2418         u64 shadow_reg_dma = qdev->rx_ring_shadow_reg_dma +
2419             (rx_ring->cq_id * sizeof(u64) * 4);
2420         void __iomem *doorbell_area =
2421             qdev->doorbell_area + (DB_PAGE_SIZE * (128 + rx_ring->cq_id));
2422         int err = 0;
2423         u16 bq_len;
2424
2425         /* Set up the shadow registers for this ring. */
2426         rx_ring->prod_idx_sh_reg = shadow_reg;
2427         rx_ring->prod_idx_sh_reg_dma = shadow_reg_dma;
2428         shadow_reg += sizeof(u64);
2429         shadow_reg_dma += sizeof(u64);
2430         rx_ring->lbq_base_indirect = shadow_reg;
2431         rx_ring->lbq_base_indirect_dma = shadow_reg_dma;
2432         shadow_reg += sizeof(u64);
2433         shadow_reg_dma += sizeof(u64);
2434         rx_ring->sbq_base_indirect = shadow_reg;
2435         rx_ring->sbq_base_indirect_dma = shadow_reg_dma;
2436
2437         /* PCI doorbell mem area + 0x00 for consumer index register */
2438         rx_ring->cnsmr_idx_db_reg = (u32 __iomem *) doorbell_area;
2439         rx_ring->cnsmr_idx = 0;
2440         rx_ring->curr_entry = rx_ring->cq_base;
2441
2442         /* PCI doorbell mem area + 0x04 for valid register */
2443         rx_ring->valid_db_reg = doorbell_area + 0x04;
2444
2445         /* PCI doorbell mem area + 0x18 for large buffer consumer */
2446         rx_ring->lbq_prod_idx_db_reg = (u32 __iomem *) (doorbell_area + 0x18);
2447
2448         /* PCI doorbell mem area + 0x1c */
2449         rx_ring->sbq_prod_idx_db_reg = (u32 __iomem *) (doorbell_area + 0x1c);
2450
2451         memset((void *)cqicb, 0, sizeof(struct cqicb));
2452         cqicb->msix_vect = rx_ring->irq;
2453
2454         bq_len = (rx_ring->cq_len == 65536) ? 0 : (u16) rx_ring->cq_len;
2455         cqicb->len = cpu_to_le16(bq_len | LEN_V | LEN_CPP_CONT);
2456
2457         cqicb->addr = cpu_to_le64(rx_ring->cq_base_dma);
2458
2459         cqicb->prod_idx_addr = cpu_to_le64(rx_ring->prod_idx_sh_reg_dma);
2460
2461         /*
2462          * Set up the control block load flags.
2463          */
2464         cqicb->flags = FLAGS_LC |       /* Load queue base address */
2465             FLAGS_LV |          /* Load MSI-X vector */
2466             FLAGS_LI;           /* Load irq delay values */
2467         if (rx_ring->lbq_len) {
2468                 cqicb->flags |= FLAGS_LL;       /* Load lbq values */
2469                 *((u64 *) rx_ring->lbq_base_indirect) = rx_ring->lbq_base_dma;
2470                 cqicb->lbq_addr =
2471                     cpu_to_le64(rx_ring->lbq_base_indirect_dma);
2472                 bq_len = (rx_ring->lbq_buf_size == 65536) ? 0 :
2473                         (u16) rx_ring->lbq_buf_size;
2474                 cqicb->lbq_buf_size = cpu_to_le16(bq_len);
2475                 bq_len = (rx_ring->lbq_len == 65536) ? 0 :
2476                         (u16) rx_ring->lbq_len;
2477                 cqicb->lbq_len = cpu_to_le16(bq_len);
2478                 rx_ring->lbq_prod_idx = rx_ring->lbq_len - 16;
2479                 rx_ring->lbq_curr_idx = 0;
2480                 rx_ring->lbq_clean_idx = rx_ring->lbq_prod_idx;
2481                 rx_ring->lbq_free_cnt = 16;
2482         }
2483         if (rx_ring->sbq_len) {
2484                 cqicb->flags |= FLAGS_LS;       /* Load sbq values */
2485                 *((u64 *) rx_ring->sbq_base_indirect) = rx_ring->sbq_base_dma;
2486                 cqicb->sbq_addr =
2487                     cpu_to_le64(rx_ring->sbq_base_indirect_dma);
2488                 cqicb->sbq_buf_size =
2489                     cpu_to_le16(((rx_ring->sbq_buf_size / 2) + 8) & 0xfffffff8);
2490                 bq_len = (rx_ring->sbq_len == 65536) ? 0 :
2491                         (u16) rx_ring->sbq_len;
2492                 cqicb->sbq_len = cpu_to_le16(bq_len);
2493                 rx_ring->sbq_prod_idx = rx_ring->sbq_len - 16;
2494                 rx_ring->sbq_curr_idx = 0;
2495                 rx_ring->sbq_clean_idx = rx_ring->sbq_prod_idx;
2496                 rx_ring->sbq_free_cnt = 16;
2497         }
2498         switch (rx_ring->type) {
2499         case TX_Q:
2500                 /* If there's only one interrupt, then we use
2501                  * worker threads to process the outbound
2502                  * completion handling rx_rings. We do this so
2503                  * they can be run on multiple CPUs. There is
2504                  * room to play with this more where we would only
2505                  * run in a worker if there are more than x number
2506                  * of outbound completions on the queue and more
2507                  * than one queue active.  Some threshold that
2508                  * would indicate a benefit in spite of the cost
2509                  * of a context switch.
2510                  * If there's more than one interrupt, then the
2511                  * outbound completions are processed in the ISR.
2512                  */
2513                 if (!test_bit(QL_MSIX_ENABLED, &qdev->flags))
2514                         INIT_DELAYED_WORK(&rx_ring->rx_work, ql_tx_clean);
2515                 else {
2516                         /* With all debug warnings on we see a WARN_ON message
2517                          * when we free the skb in the interrupt context.
2518                          */
2519                         INIT_DELAYED_WORK(&rx_ring->rx_work, ql_tx_clean);
2520                 }
2521                 cqicb->irq_delay = cpu_to_le16(qdev->tx_coalesce_usecs);
2522                 cqicb->pkt_delay = cpu_to_le16(qdev->tx_max_coalesced_frames);
2523                 break;
2524         case DEFAULT_Q:
2525                 INIT_DELAYED_WORK(&rx_ring->rx_work, ql_rx_clean);
2526                 cqicb->irq_delay = 0;
2527                 cqicb->pkt_delay = 0;
2528                 break;
2529         case RX_Q:
2530                 /* Inbound completion handling rx_rings run in
2531                  * separate NAPI contexts.
2532                  */
2533                 netif_napi_add(qdev->ndev, &rx_ring->napi, ql_napi_poll_msix,
2534                                64);
2535                 cqicb->irq_delay = cpu_to_le16(qdev->rx_coalesce_usecs);
2536                 cqicb->pkt_delay = cpu_to_le16(qdev->rx_max_coalesced_frames);
2537                 break;
2538         default:
2539                 QPRINTK(qdev, IFUP, DEBUG, "Invalid rx_ring->type = %d.\n",
2540                         rx_ring->type);
2541         }
2542         QPRINTK(qdev, IFUP, INFO, "Initializing rx work queue.\n");
2543         err = ql_write_cfg(qdev, cqicb, sizeof(struct cqicb),
2544                            CFG_LCQ, rx_ring->cq_id);
2545         if (err) {
2546                 QPRINTK(qdev, IFUP, ERR, "Failed to load CQICB.\n");
2547                 return err;
2548         }
2549         QPRINTK(qdev, IFUP, INFO, "Successfully loaded CQICB.\n");
2550         /*
2551          * Advance the producer index for the buffer queues.
2552          */
2553         wmb();
2554         if (rx_ring->lbq_len)
2555                 ql_write_db_reg(rx_ring->lbq_prod_idx,
2556                                 rx_ring->lbq_prod_idx_db_reg);
2557         if (rx_ring->sbq_len)
2558                 ql_write_db_reg(rx_ring->sbq_prod_idx,
2559                                 rx_ring->sbq_prod_idx_db_reg);
2560         return err;
2561 }
2562
2563 static int ql_start_tx_ring(struct ql_adapter *qdev, struct tx_ring *tx_ring)
2564 {
2565         struct wqicb *wqicb = (struct wqicb *)tx_ring;
2566         void __iomem *doorbell_area =
2567             qdev->doorbell_area + (DB_PAGE_SIZE * tx_ring->wq_id);
2568         void *shadow_reg = qdev->tx_ring_shadow_reg_area +
2569             (tx_ring->wq_id * sizeof(u64));
2570         u64 shadow_reg_dma = qdev->tx_ring_shadow_reg_dma +
2571             (tx_ring->wq_id * sizeof(u64));
2572         int err = 0;
2573
2574         /*
2575          * Assign doorbell registers for this tx_ring.
2576          */
2577         /* TX PCI doorbell mem area for tx producer index */
2578         tx_ring->prod_idx_db_reg = (u32 __iomem *) doorbell_area;
2579         tx_ring->prod_idx = 0;
2580         /* TX PCI doorbell mem area + 0x04 */
2581         tx_ring->valid_db_reg = doorbell_area + 0x04;
2582
2583         /*
2584          * Assign shadow registers for this tx_ring.
2585          */
2586         tx_ring->cnsmr_idx_sh_reg = shadow_reg;
2587         tx_ring->cnsmr_idx_sh_reg_dma = shadow_reg_dma;
2588
2589         wqicb->len = cpu_to_le16(tx_ring->wq_len | Q_LEN_V | Q_LEN_CPP_CONT);
2590         wqicb->flags = cpu_to_le16(Q_FLAGS_LC |
2591                                    Q_FLAGS_LB | Q_FLAGS_LI | Q_FLAGS_LO);
2592         wqicb->cq_id_rss = cpu_to_le16(tx_ring->cq_id);
2593         wqicb->rid = 0;
2594         wqicb->addr = cpu_to_le64(tx_ring->wq_base_dma);
2595
2596         wqicb->cnsmr_idx_addr = cpu_to_le64(tx_ring->cnsmr_idx_sh_reg_dma);
2597
2598         ql_init_tx_ring(qdev, tx_ring);
2599
2600         err = ql_write_cfg(qdev, wqicb, sizeof(wqicb), CFG_LRQ,
2601                            (u16) tx_ring->wq_id);
2602         if (err) {
2603                 QPRINTK(qdev, IFUP, ERR, "Failed to load tx_ring.\n");
2604                 return err;
2605         }
2606         QPRINTK(qdev, IFUP, INFO, "Successfully loaded WQICB.\n");
2607         return err;
2608 }
2609
2610 static void ql_disable_msix(struct ql_adapter *qdev)
2611 {
2612         if (test_bit(QL_MSIX_ENABLED, &qdev->flags)) {
2613                 pci_disable_msix(qdev->pdev);
2614                 clear_bit(QL_MSIX_ENABLED, &qdev->flags);
2615                 kfree(qdev->msi_x_entry);
2616                 qdev->msi_x_entry = NULL;
2617         } else if (test_bit(QL_MSI_ENABLED, &qdev->flags)) {
2618                 pci_disable_msi(qdev->pdev);
2619                 clear_bit(QL_MSI_ENABLED, &qdev->flags);
2620         }
2621 }
2622
2623 static void ql_enable_msix(struct ql_adapter *qdev)
2624 {
2625         int i;
2626
2627         qdev->intr_count = 1;
2628         /* Get the MSIX vectors. */
2629         if (irq_type == MSIX_IRQ) {
2630                 /* Try to alloc space for the msix struct,
2631                  * if it fails then go to MSI/legacy.
2632                  */
2633                 qdev->msi_x_entry = kcalloc(qdev->rx_ring_count,
2634                                             sizeof(struct msix_entry),
2635                                             GFP_KERNEL);
2636                 if (!qdev->msi_x_entry) {
2637                         irq_type = MSI_IRQ;
2638                         goto msi;
2639                 }
2640
2641                 for (i = 0; i < qdev->rx_ring_count; i++)
2642                         qdev->msi_x_entry[i].entry = i;
2643
2644                 if (!pci_enable_msix
2645                     (qdev->pdev, qdev->msi_x_entry, qdev->rx_ring_count)) {
2646                         set_bit(QL_MSIX_ENABLED, &qdev->flags);
2647                         qdev->intr_count = qdev->rx_ring_count;
2648                         QPRINTK(qdev, IFUP, INFO,
2649                                 "MSI-X Enabled, got %d vectors.\n",
2650                                 qdev->intr_count);
2651                         return;
2652                 } else {
2653                         kfree(qdev->msi_x_entry);
2654                         qdev->msi_x_entry = NULL;
2655                         QPRINTK(qdev, IFUP, WARNING,
2656                                 "MSI-X Enable failed, trying MSI.\n");
2657                         irq_type = MSI_IRQ;
2658                 }
2659         }
2660 msi:
2661         if (irq_type == MSI_IRQ) {
2662                 if (!pci_enable_msi(qdev->pdev)) {
2663                         set_bit(QL_MSI_ENABLED, &qdev->flags);
2664                         QPRINTK(qdev, IFUP, INFO,
2665                                 "Running with MSI interrupts.\n");
2666                         return;
2667                 }
2668         }
2669         irq_type = LEG_IRQ;
2670         QPRINTK(qdev, IFUP, DEBUG, "Running with legacy interrupts.\n");
2671 }
2672
2673 /*
2674  * Here we build the intr_context structures based on
2675  * our rx_ring count and intr vector count.
2676  * The intr_context structure is used to hook each vector
2677  * to possibly different handlers.
2678  */
2679 static void ql_resolve_queues_to_irqs(struct ql_adapter *qdev)
2680 {
2681         int i = 0;
2682         struct intr_context *intr_context = &qdev->intr_context[0];
2683
2684         ql_enable_msix(qdev);
2685
2686         if (likely(test_bit(QL_MSIX_ENABLED, &qdev->flags))) {
2687                 /* Each rx_ring has it's
2688                  * own intr_context since we have separate
2689                  * vectors for each queue.
2690                  * This only true when MSI-X is enabled.
2691                  */
2692                 for (i = 0; i < qdev->intr_count; i++, intr_context++) {
2693                         qdev->rx_ring[i].irq = i;
2694                         intr_context->intr = i;
2695                         intr_context->qdev = qdev;
2696                         /*
2697                          * We set up each vectors enable/disable/read bits so
2698                          * there's no bit/mask calculations in the critical path.
2699                          */
2700                         intr_context->intr_en_mask =
2701                             INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK |
2702                             INTR_EN_TYPE_ENABLE | INTR_EN_IHD_MASK | INTR_EN_IHD
2703                             | i;
2704                         intr_context->intr_dis_mask =
2705                             INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK |
2706                             INTR_EN_TYPE_DISABLE | INTR_EN_IHD_MASK |
2707                             INTR_EN_IHD | i;
2708                         intr_context->intr_read_mask =
2709                             INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK |
2710                             INTR_EN_TYPE_READ | INTR_EN_IHD_MASK | INTR_EN_IHD |
2711                             i;
2712
2713                         if (i == 0) {
2714                                 /*
2715                                  * Default queue handles bcast/mcast plus
2716                                  * async events.  Needs buffers.
2717                                  */
2718                                 intr_context->handler = qlge_isr;
2719                                 sprintf(intr_context->name, "%s-default-queue",
2720                                         qdev->ndev->name);
2721                         } else if (i < qdev->rss_ring_first_cq_id) {
2722                                 /*
2723                                  * Outbound queue is for outbound completions only.
2724                                  */
2725                                 intr_context->handler = qlge_msix_tx_isr;
2726                                 sprintf(intr_context->name, "%s-tx-%d",
2727                                         qdev->ndev->name, i);
2728                         } else {
2729                                 /*
2730                                  * Inbound queues handle unicast frames only.
2731                                  */
2732                                 intr_context->handler = qlge_msix_rx_isr;
2733                                 sprintf(intr_context->name, "%s-rx-%d",
2734                                         qdev->ndev->name, i);
2735                         }
2736                 }
2737         } else {
2738                 /*
2739                  * All rx_rings use the same intr_context since
2740                  * there is only one vector.
2741                  */
2742                 intr_context->intr = 0;
2743                 intr_context->qdev = qdev;
2744                 /*
2745                  * We set up each vectors enable/disable/read bits so
2746                  * there's no bit/mask calculations in the critical path.
2747                  */
2748                 intr_context->intr_en_mask =
2749                     INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK | INTR_EN_TYPE_ENABLE;
2750                 intr_context->intr_dis_mask =
2751                     INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK |
2752                     INTR_EN_TYPE_DISABLE;
2753                 intr_context->intr_read_mask =
2754                     INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK | INTR_EN_TYPE_READ;
2755                 /*
2756                  * Single interrupt means one handler for all rings.
2757                  */
2758                 intr_context->handler = qlge_isr;
2759                 sprintf(intr_context->name, "%s-single_irq", qdev->ndev->name);
2760                 for (i = 0; i < qdev->rx_ring_count; i++)
2761                         qdev->rx_ring[i].irq = 0;
2762         }
2763 }
2764
2765 static void ql_free_irq(struct ql_adapter *qdev)
2766 {
2767         int i;
2768         struct intr_context *intr_context = &qdev->intr_context[0];
2769
2770         for (i = 0; i < qdev->intr_count; i++, intr_context++) {
2771                 if (intr_context->hooked) {
2772                         if (test_bit(QL_MSIX_ENABLED, &qdev->flags)) {
2773                                 free_irq(qdev->msi_x_entry[i].vector,
2774                                          &qdev->rx_ring[i]);
2775                                 QPRINTK(qdev, IFDOWN, ERR,
2776                                         "freeing msix interrupt %d.\n", i);
2777                         } else {
2778                                 free_irq(qdev->pdev->irq, &qdev->rx_ring[0]);
2779                                 QPRINTK(qdev, IFDOWN, ERR,
2780                                         "freeing msi interrupt %d.\n", i);
2781                         }
2782                 }
2783         }
2784         ql_disable_msix(qdev);
2785 }
2786
2787 static int ql_request_irq(struct ql_adapter *qdev)
2788 {
2789         int i;
2790         int status = 0;
2791         struct pci_dev *pdev = qdev->pdev;
2792         struct intr_context *intr_context = &qdev->intr_context[0];
2793
2794         ql_resolve_queues_to_irqs(qdev);
2795
2796         for (i = 0; i < qdev->intr_count; i++, intr_context++) {
2797                 atomic_set(&intr_context->irq_cnt, 0);
2798                 if (test_bit(QL_MSIX_ENABLED, &qdev->flags)) {
2799                         status = request_irq(qdev->msi_x_entry[i].vector,
2800                                              intr_context->handler,
2801                                              0,
2802                                              intr_context->name,
2803                                              &qdev->rx_ring[i]);
2804                         if (status) {
2805                                 QPRINTK(qdev, IFUP, ERR,
2806                                         "Failed request for MSIX interrupt %d.\n",
2807                                         i);
2808                                 goto err_irq;
2809                         } else {
2810                                 QPRINTK(qdev, IFUP, INFO,
2811                                         "Hooked intr %d, queue type %s%s%s, with name %s.\n",
2812                                         i,
2813                                         qdev->rx_ring[i].type ==
2814                                         DEFAULT_Q ? "DEFAULT_Q" : "",
2815                                         qdev->rx_ring[i].type ==
2816                                         TX_Q ? "TX_Q" : "",
2817                                         qdev->rx_ring[i].type ==
2818                                         RX_Q ? "RX_Q" : "", intr_context->name);
2819                         }
2820                 } else {
2821                         QPRINTK(qdev, IFUP, DEBUG,
2822                                 "trying msi or legacy interrupts.\n");
2823                         QPRINTK(qdev, IFUP, DEBUG,
2824                                 "%s: irq = %d.\n", __func__, pdev->irq);
2825                         QPRINTK(qdev, IFUP, DEBUG,
2826                                 "%s: context->name = %s.\n", __func__,
2827                                intr_context->name);
2828                         QPRINTK(qdev, IFUP, DEBUG,
2829                                 "%s: dev_id = 0x%p.\n", __func__,
2830                                &qdev->rx_ring[0]);
2831                         status =
2832                             request_irq(pdev->irq, qlge_isr,
2833                                         test_bit(QL_MSI_ENABLED,
2834                                                  &qdev->
2835                                                  flags) ? 0 : IRQF_SHARED,
2836                                         intr_context->name, &qdev->rx_ring[0]);
2837                         if (status)
2838                                 goto err_irq;
2839
2840                         QPRINTK(qdev, IFUP, ERR,
2841                                 "Hooked intr %d, queue type %s%s%s, with name %s.\n",
2842                                 i,
2843                                 qdev->rx_ring[0].type ==
2844                                 DEFAULT_Q ? "DEFAULT_Q" : "",
2845                                 qdev->rx_ring[0].type == TX_Q ? "TX_Q" : "",
2846                                 qdev->rx_ring[0].type == RX_Q ? "RX_Q" : "",
2847                                 intr_context->name);
2848                 }
2849                 intr_context->hooked = 1;
2850         }
2851         return status;
2852 err_irq:
2853         QPRINTK(qdev, IFUP, ERR, "Failed to get the interrupts!!!/n");
2854         ql_free_irq(qdev);
2855         return status;
2856 }
2857
2858 static int ql_start_rss(struct ql_adapter *qdev)
2859 {
2860         struct ricb *ricb = &qdev->ricb;
2861         int status = 0;
2862         int i;
2863         u8 *hash_id = (u8 *) ricb->hash_cq_id;
2864
2865         memset((void *)ricb, 0, sizeof(ricb));
2866
2867         ricb->base_cq = qdev->rss_ring_first_cq_id | RSS_L4K;
2868         ricb->flags =
2869             (RSS_L6K | RSS_LI | RSS_LB | RSS_LM | RSS_RI4 | RSS_RI6 | RSS_RT4 |
2870              RSS_RT6);
2871         ricb->mask = cpu_to_le16(qdev->rss_ring_count - 1);
2872
2873         /*
2874          * Fill out the Indirection Table.
2875          */
2876         for (i = 0; i < 32; i++)
2877                 hash_id[i] = i & 1;
2878
2879         /*
2880          * Random values for the IPv6 and IPv4 Hash Keys.
2881          */
2882         get_random_bytes((void *)&ricb->ipv6_hash_key[0], 40);
2883         get_random_bytes((void *)&ricb->ipv4_hash_key[0], 16);
2884
2885         QPRINTK(qdev, IFUP, INFO, "Initializing RSS.\n");
2886
2887         status = ql_write_cfg(qdev, ricb, sizeof(ricb), CFG_LR, 0);
2888         if (status) {
2889                 QPRINTK(qdev, IFUP, ERR, "Failed to load RICB.\n");
2890                 return status;
2891         }
2892         QPRINTK(qdev, IFUP, INFO, "Successfully loaded RICB.\n");
2893         return status;
2894 }
2895
2896 /* Initialize the frame-to-queue routing. */
2897 static int ql_route_initialize(struct ql_adapter *qdev)
2898 {
2899         int status = 0;
2900         int i;
2901
2902         /* Clear all the entries in the routing table. */
2903         for (i = 0; i < 16; i++) {
2904                 status = ql_set_routing_reg(qdev, i, 0, 0);
2905                 if (status) {
2906                         QPRINTK(qdev, IFUP, ERR,
2907                                 "Failed to init routing register for CAM packets.\n");
2908                         return status;
2909                 }
2910         }
2911
2912         status = ql_set_routing_reg(qdev, RT_IDX_ALL_ERR_SLOT, RT_IDX_ERR, 1);
2913         if (status) {
2914                 QPRINTK(qdev, IFUP, ERR,
2915                         "Failed to init routing register for error packets.\n");
2916                 return status;
2917         }
2918         status = ql_set_routing_reg(qdev, RT_IDX_BCAST_SLOT, RT_IDX_BCAST, 1);
2919         if (status) {
2920                 QPRINTK(qdev, IFUP, ERR,
2921                         "Failed to init routing register for broadcast packets.\n");
2922                 return status;
2923         }
2924         /* If we have more than one inbound queue, then turn on RSS in the
2925          * routing block.
2926          */
2927         if (qdev->rss_ring_count > 1) {
2928                 status = ql_set_routing_reg(qdev, RT_IDX_RSS_MATCH_SLOT,
2929                                         RT_IDX_RSS_MATCH, 1);
2930                 if (status) {
2931                         QPRINTK(qdev, IFUP, ERR,
2932                                 "Failed to init routing register for MATCH RSS packets.\n");
2933                         return status;
2934                 }
2935         }
2936
2937         status = ql_set_routing_reg(qdev, RT_IDX_CAM_HIT_SLOT,
2938                                     RT_IDX_CAM_HIT, 1);
2939         if (status) {
2940                 QPRINTK(qdev, IFUP, ERR,
2941                         "Failed to init routing register for CAM packets.\n");
2942                 return status;
2943         }
2944         return status;
2945 }
2946
2947 static int ql_adapter_initialize(struct ql_adapter *qdev)
2948 {
2949         u32 value, mask;
2950         int i;
2951         int status = 0;
2952
2953         /*
2954          * Set up the System register to halt on errors.
2955          */
2956         value = SYS_EFE | SYS_FAE;
2957         mask = value << 16;
2958         ql_write32(qdev, SYS, mask | value);
2959
2960         /* Set the default queue. */
2961         value = NIC_RCV_CFG_DFQ;
2962         mask = NIC_RCV_CFG_DFQ_MASK;
2963         ql_write32(qdev, NIC_RCV_CFG, (mask | value));
2964
2965         /* Set the MPI interrupt to enabled. */
2966         ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16) | INTR_MASK_PI);
2967
2968         /* Enable the function, set pagesize, enable error checking. */
2969         value = FSC_FE | FSC_EPC_INBOUND | FSC_EPC_OUTBOUND |
2970             FSC_EC | FSC_VM_PAGE_4K | FSC_SH;
2971
2972         /* Set/clear header splitting. */
2973         mask = FSC_VM_PAGESIZE_MASK |
2974             FSC_DBL_MASK | FSC_DBRST_MASK | (value << 16);
2975         ql_write32(qdev, FSC, mask | value);
2976
2977         ql_write32(qdev, SPLT_HDR, SPLT_HDR_EP |
2978                 min(SMALL_BUFFER_SIZE, MAX_SPLIT_SIZE));
2979
2980         /* Start up the rx queues. */
2981         for (i = 0; i < qdev->rx_ring_count; i++) {
2982                 status = ql_start_rx_ring(qdev, &qdev->rx_ring[i]);
2983                 if (status) {
2984                         QPRINTK(qdev, IFUP, ERR,
2985                                 "Failed to start rx ring[%d].\n", i);
2986                         return status;
2987                 }
2988         }
2989
2990         /* If there is more than one inbound completion queue
2991          * then download a RICB to configure RSS.
2992          */
2993         if (qdev->rss_ring_count > 1) {
2994                 status = ql_start_rss(qdev);
2995                 if (status) {
2996                         QPRINTK(qdev, IFUP, ERR, "Failed to start RSS.\n");
2997                         return status;
2998                 }
2999         }
3000
3001         /* Start up the tx queues. */
3002         for (i = 0; i < qdev->tx_ring_count; i++) {
3003                 status = ql_start_tx_ring(qdev, &qdev->tx_ring[i]);
3004                 if (status) {
3005                         QPRINTK(qdev, IFUP, ERR,
3006                                 "Failed to start tx ring[%d].\n", i);
3007                         return status;
3008                 }
3009         }
3010
3011         status = ql_port_initialize(qdev);
3012         if (status) {
3013                 QPRINTK(qdev, IFUP, ERR, "Failed to start port.\n");
3014                 return status;
3015         }
3016
3017         status = ql_set_mac_addr_reg(qdev, (u8 *) qdev->ndev->perm_addr,
3018                                      MAC_ADDR_TYPE_CAM_MAC, qdev->func);
3019         if (status) {
3020                 QPRINTK(qdev, IFUP, ERR, "Failed to init mac address.\n");
3021                 return status;
3022         }
3023
3024         status = ql_route_initialize(qdev);
3025         if (status) {
3026                 QPRINTK(qdev, IFUP, ERR, "Failed to init routing table.\n");
3027                 return status;
3028         }
3029
3030         /* Start NAPI for the RSS queues. */
3031         for (i = qdev->rss_ring_first_cq_id; i < qdev->rx_ring_count; i++) {
3032                 QPRINTK(qdev, IFUP, INFO, "Enabling NAPI for rx_ring[%d].\n",
3033                         i);
3034                 napi_enable(&qdev->rx_ring[i].napi);
3035         }
3036
3037         return status;
3038 }
3039
3040 /* Issue soft reset to chip. */
3041 static int ql_adapter_reset(struct ql_adapter *qdev)
3042 {
3043         u32 value;
3044         int max_wait_time;
3045         int status = 0;
3046         int resetCnt = 0;
3047
3048 #define MAX_RESET_CNT   1
3049 issueReset:
3050         resetCnt++;
3051         QPRINTK(qdev, IFDOWN, DEBUG, "Issue soft reset to chip.\n");
3052         ql_write32(qdev, RST_FO, (RST_FO_FR << 16) | RST_FO_FR);
3053         /* Wait for reset to complete. */
3054         max_wait_time = 3;
3055         QPRINTK(qdev, IFDOWN, DEBUG, "Wait %d seconds for reset to complete.\n",
3056                 max_wait_time);
3057         do {
3058                 value = ql_read32(qdev, RST_FO);
3059                 if ((value & RST_FO_FR) == 0)
3060                         break;
3061
3062                 ssleep(1);
3063         } while ((--max_wait_time));
3064         if (value & RST_FO_FR) {
3065                 QPRINTK(qdev, IFDOWN, ERR,
3066                         "Stuck in SoftReset:  FSC_SR:0x%08x\n", value);
3067                 if (resetCnt < MAX_RESET_CNT)
3068                         goto issueReset;
3069         }
3070         if (max_wait_time == 0) {
3071                 status = -ETIMEDOUT;
3072                 QPRINTK(qdev, IFDOWN, ERR,
3073                         "ETIMEOUT!!! errored out of resetting the chip!\n");
3074         }
3075
3076         return status;
3077 }
3078
3079 static void ql_display_dev_info(struct net_device *ndev)
3080 {
3081         struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev);
3082
3083         QPRINTK(qdev, PROBE, INFO,
3084                 "Function #%d, NIC Roll %d, NIC Rev = %d, "
3085                 "XG Roll = %d, XG Rev = %d.\n",
3086                 qdev->func,
3087                 qdev->chip_rev_id & 0x0000000f,
3088                 qdev->chip_rev_id >> 4 & 0x0000000f,
3089                 qdev->chip_rev_id >> 8 & 0x0000000f,
3090                 qdev->chip_rev_id >> 12 & 0x0000000f);
3091         QPRINTK(qdev, PROBE, INFO, "MAC address %pM\n", ndev->dev_addr);
3092 }
3093
3094 static int ql_adapter_down(struct ql_adapter *qdev)
3095 {
3096         struct net_device *ndev = qdev->ndev;
3097         int i, status = 0;
3098         struct rx_ring *rx_ring;
3099
3100         netif_stop_queue(ndev);
3101         netif_carrier_off(ndev);
3102
3103         cancel_delayed_work_sync(&qdev->asic_reset_work);
3104         cancel_delayed_work_sync(&qdev->mpi_reset_work);
3105         cancel_delayed_work_sync(&qdev->mpi_work);
3106
3107         /* The default queue at index 0 is always processed in
3108          * a workqueue.
3109          */
3110         cancel_delayed_work_sync(&qdev->rx_ring[0].rx_work);
3111
3112         /* The rest of the rx_rings are processed in
3113          * a workqueue only if it's a single interrupt
3114          * environment (MSI/Legacy).
3115          */
3116         for (i = 1; i < qdev->rx_ring_count; i++) {
3117                 rx_ring = &qdev->rx_ring[i];
3118                 /* Only the RSS rings use NAPI on multi irq
3119                  * environment.  Outbound completion processing
3120                  * is done in interrupt context.
3121                  */
3122                 if (i >= qdev->rss_ring_first_cq_id) {
3123                         napi_disable(&rx_ring->napi);
3124                 } else {
3125                         cancel_delayed_work_sync(&rx_ring->rx_work);
3126                 }
3127         }
3128
3129         clear_bit(QL_ADAPTER_UP, &qdev->flags);
3130
3131         ql_disable_interrupts(qdev);
3132
3133         ql_tx_ring_clean(qdev);
3134
3135         spin_lock(&qdev->hw_lock);
3136         status = ql_adapter_reset(qdev);
3137         if (status)
3138                 QPRINTK(qdev, IFDOWN, ERR, "reset(func #%d) FAILED!\n",
3139                         qdev->func);
3140         spin_unlock(&qdev->hw_lock);
3141         return status;
3142 }
3143
3144 static int ql_adapter_up(struct ql_adapter *qdev)
3145 {
3146         int err = 0;
3147
3148         spin_lock(&qdev->hw_lock);
3149         err = ql_adapter_initialize(qdev);
3150         if (err) {
3151                 QPRINTK(qdev, IFUP, INFO, "Unable to initialize adapter.\n");
3152                 spin_unlock(&qdev->hw_lock);
3153                 goto err_init;
3154         }
3155         spin_unlock(&qdev->hw_lock);
3156         set_bit(QL_ADAPTER_UP, &qdev->flags);
3157         ql_enable_interrupts(qdev);
3158         ql_enable_all_completion_interrupts(qdev);
3159         if ((ql_read32(qdev, STS) & qdev->port_init)) {
3160                 netif_carrier_on(qdev->ndev);
3161                 netif_start_queue(qdev->ndev);
3162         }
3163
3164         return 0;
3165 err_init:
3166         ql_adapter_reset(qdev);
3167         return err;
3168 }
3169
3170 static int ql_cycle_adapter(struct ql_adapter *qdev)
3171 {
3172         int status;
3173
3174         status = ql_adapter_down(qdev);
3175         if (status)
3176                 goto error;
3177
3178         status = ql_adapter_up(qdev);
3179         if (status)
3180                 goto error;
3181
3182         return status;
3183 error:
3184         QPRINTK(qdev, IFUP, ALERT,
3185                 "Driver up/down cycle failed, closing device\n");
3186         rtnl_lock();
3187         dev_close(qdev->ndev);
3188         rtnl_unlock();
3189         return status;
3190 }
3191
3192 static void ql_release_adapter_resources(struct ql_adapter *qdev)
3193 {
3194         ql_free_mem_resources(qdev);
3195         ql_free_irq(qdev);
3196 }
3197
3198 static int ql_get_adapter_resources(struct ql_adapter *qdev)
3199 {
3200         int status = 0;
3201
3202         if (ql_alloc_mem_resources(qdev)) {
3203                 QPRINTK(qdev, IFUP, ERR, "Unable to  allocate memory.\n");
3204                 return -ENOMEM;
3205         }
3206         status = ql_request_irq(qdev);
3207         if (status)
3208                 goto err_irq;
3209         return status;
3210 err_irq:
3211         ql_free_mem_resources(qdev);
3212         return status;
3213 }
3214
3215 static int qlge_close(struct net_device *ndev)
3216 {
3217         struct ql_adapter *qdev = netdev_priv(ndev);
3218
3219         /*
3220          * Wait for device to recover from a reset.
3221          * (Rarely happens, but possible.)
3222          */
3223         while (!test_bit(QL_ADAPTER_UP, &qdev->flags))
3224                 msleep(1);
3225         ql_adapter_down(qdev);
3226         ql_release_adapter_resources(qdev);
3227         return 0;
3228 }
3229
3230 static int ql_configure_rings(struct ql_adapter *qdev)
3231 {
3232         int i;
3233         struct rx_ring *rx_ring;
3234         struct tx_ring *tx_ring;
3235         int cpu_cnt = num_online_cpus();
3236
3237         /*
3238          * For each processor present we allocate one
3239          * rx_ring for outbound completions, and one
3240          * rx_ring for inbound completions.  Plus there is
3241          * always the one default queue.  For the CPU
3242          * counts we end up with the following rx_rings:
3243          * rx_ring count =
3244          *  one default queue +
3245          *  (CPU count * outbound completion rx_ring) +
3246          *  (CPU count * inbound (RSS) completion rx_ring)
3247          * To keep it simple we limit the total number of
3248          * queues to < 32, so we truncate CPU to 8.
3249          * This limitation can be removed when requested.
3250          */
3251
3252         if (cpu_cnt > MAX_CPUS)
3253                 cpu_cnt = MAX_CPUS;
3254
3255         /*
3256          * rx_ring[0] is always the default queue.
3257          */
3258         /* Allocate outbound completion ring for each CPU. */
3259         qdev->tx_ring_count = cpu_cnt;
3260         /* Allocate inbound completion (RSS) ring for each CPU. */
3261         qdev->rss_ring_count = cpu_cnt;
3262         /* cq_id for the first inbound ring handler. */
3263         qdev->rss_ring_first_cq_id = cpu_cnt + 1;
3264         /*
3265          * qdev->rx_ring_count:
3266          * Total number of rx_rings.  This includes the one
3267          * default queue, a number of outbound completion
3268          * handler rx_rings, and the number of inbound
3269          * completion handler rx_rings.
3270          */
3271         qdev->rx_ring_count = qdev->tx_ring_count + qdev->rss_ring_count + 1;
3272
3273         for (i = 0; i < qdev->tx_ring_count; i++) {
3274                 tx_ring = &qdev->tx_ring[i];
3275                 memset((void *)tx_ring, 0, sizeof(tx_ring));
3276                 tx_ring->qdev = qdev;
3277                 tx_ring->wq_id = i;
3278                 tx_ring->wq_len = qdev->tx_ring_size;
3279                 tx_ring->wq_size =
3280                     tx_ring->wq_len * sizeof(struct ob_mac_iocb_req);
3281
3282                 /*
3283                  * The completion queue ID for the tx rings start
3284                  * immediately after the default Q ID, which is zero.
3285                  */
3286                 tx_ring->cq_id = i + 1;
3287         }
3288
3289         for (i = 0; i < qdev->rx_ring_count; i++) {
3290                 rx_ring = &qdev->rx_ring[i];
3291                 memset((void *)rx_ring, 0, sizeof(rx_ring));
3292                 rx_ring->qdev = qdev;
3293                 rx_ring->cq_id = i;
3294                 rx_ring->cpu = i % cpu_cnt;     /* CPU to run handler on. */
3295                 if (i == 0) {   /* Default queue at index 0. */
3296                         /*
3297                          * Default queue handles bcast/mcast plus
3298                          * async events.  Needs buffers.
3299                          */
3300                         rx_ring->cq_len = qdev->rx_ring_size;
3301                         rx_ring->cq_size =
3302                             rx_ring->cq_len * sizeof(struct ql_net_rsp_iocb);
3303                         rx_ring->lbq_len = NUM_LARGE_BUFFERS;
3304                         rx_ring->lbq_size =
3305                             rx_ring->lbq_len * sizeof(__le64);
3306                         rx_ring->lbq_buf_size = LARGE_BUFFER_SIZE;
3307                         rx_ring->sbq_len = NUM_SMALL_BUFFERS;
3308                         rx_ring->sbq_size =
3309                             rx_ring->sbq_len * sizeof(__le64);
3310                         rx_ring->sbq_buf_size = SMALL_BUFFER_SIZE * 2;
3311                         rx_ring->type = DEFAULT_Q;
3312                 } else if (i < qdev->rss_ring_first_cq_id) {
3313                         /*
3314                          * Outbound queue handles outbound completions only.
3315                          */
3316                         /* outbound cq is same size as tx_ring it services. */
3317                         rx_ring->cq_len = qdev->tx_ring_size;
3318                         rx_ring->cq_size =
3319                             rx_ring->cq_len * sizeof(struct ql_net_rsp_iocb);
3320                         rx_ring->lbq_len = 0;
3321                         rx_ring->lbq_size = 0;
3322                         rx_ring->lbq_buf_size = 0;
3323                         rx_ring->sbq_len = 0;
3324                         rx_ring->sbq_size = 0;
3325                         rx_ring->sbq_buf_size = 0;
3326                         rx_ring->type = TX_Q;
3327                 } else {        /* Inbound completions (RSS) queues */
3328                         /*
3329                          * Inbound queues handle unicast frames only.
3330                          */
3331                         rx_ring->cq_len = qdev->rx_ring_size;
3332                         rx_ring->cq_size =
3333                             rx_ring->cq_len * sizeof(struct ql_net_rsp_iocb);
3334                         rx_ring->lbq_len = NUM_LARGE_BUFFERS;
3335                         rx_ring->lbq_size =
3336                             rx_ring->lbq_len * sizeof(__le64);
3337                         rx_ring->lbq_buf_size = LARGE_BUFFER_SIZE;
3338                         rx_ring->sbq_len = NUM_SMALL_BUFFERS;
3339                         rx_ring->sbq_size =
3340                             rx_ring->sbq_len * sizeof(__le64);
3341                         rx_ring->sbq_buf_size = SMALL_BUFFER_SIZE * 2;
3342                         rx_ring->type = RX_Q;
3343                 }
3344         }
3345         return 0;
3346 }
3347
3348 static int qlge_open(struct net_device *ndev)
3349 {
3350         int err = 0;
3351         struct ql_adapter *qdev = netdev_priv(ndev);
3352
3353         err = ql_configure_rings(qdev);
3354         if (err)
3355                 return err;
3356
3357         err = ql_get_adapter_resources(qdev);
3358         if (err)
3359                 goto error_up;
3360
3361         err = ql_adapter_up(qdev);
3362         if (err)
3363                 goto error_up;
3364
3365         return err;
3366
3367 error_up:
3368         ql_release_adapter_resources(qdev);
3369         return err;
3370 }
3371
3372 static int qlge_change_mtu(struct net_device *ndev, int new_mtu)
3373 {
3374         struct ql_adapter *qdev = netdev_priv(ndev);
3375
3376         if (ndev->mtu == 1500 && new_mtu == 9000) {
3377                 QPRINTK(qdev, IFUP, ERR, "Changing to jumbo MTU.\n");
3378         } else if (ndev->mtu == 9000 && new_mtu == 1500) {
3379                 QPRINTK(qdev, IFUP, ERR, "Changing to normal MTU.\n");
3380         } else if ((ndev->mtu == 1500 && new_mtu == 1500) ||
3381                    (ndev->mtu == 9000 && new_mtu == 9000)) {
3382                 return 0;
3383         } else
3384                 return -EINVAL;
3385         ndev->mtu = new_mtu;
3386         return 0;
3387 }
3388
3389 static struct net_device_stats *qlge_get_stats(struct net_device
3390                                                *ndev)
3391 {
3392         struct ql_adapter *qdev = netdev_priv(ndev);
3393         return &qdev->stats;
3394 }
3395
3396 static void qlge_set_multicast_list(struct net_device *ndev)
3397 {
3398         struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev);
3399         struct dev_mc_list *mc_ptr;
3400         int i;
3401
3402         spin_lock(&qdev->hw_lock);
3403         /*
3404          * Set or clear promiscuous mode if a
3405          * transition is taking place.
3406          */
3407         if (ndev->flags & IFF_PROMISC) {
3408                 if (!test_bit(QL_PROMISCUOUS, &qdev->flags)) {
3409                         if (ql_set_routing_reg
3410                             (qdev, RT_IDX_PROMISCUOUS_SLOT, RT_IDX_VALID, 1)) {
3411                                 QPRINTK(qdev, HW, ERR,
3412                                         "Failed to set promiscous mode.\n");
3413                         } else {
3414                                 set_bit(QL_PROMISCUOUS, &qdev->flags);
3415                         }
3416                 }
3417         } else {
3418                 if (test_bit(QL_PROMISCUOUS, &qdev->flags)) {
3419                         if (ql_set_routing_reg
3420                             (qdev, RT_IDX_PROMISCUOUS_SLOT, RT_IDX_VALID, 0)) {
3421                                 QPRINTK(qdev, HW, ERR,
3422                                         "Failed to clear promiscous mode.\n");
3423                         } else {
3424                                 clear_bit(QL_PROMISCUOUS, &qdev->flags);
3425                         }
3426                 }
3427         }
3428
3429         /*
3430          * Set or clear all multicast mode if a
3431          * transition is taking place.
3432          */
3433         if ((ndev->flags & IFF_ALLMULTI) ||
3434             (ndev->mc_count > MAX_MULTICAST_ENTRIES)) {
3435                 if (!test_bit(QL_ALLMULTI, &qdev->flags)) {
3436                         if (ql_set_routing_reg
3437                             (qdev, RT_IDX_ALLMULTI_SLOT, RT_IDX_MCAST, 1)) {
3438                                 QPRINTK(qdev, HW, ERR,
3439                                         "Failed to set all-multi mode.\n");
3440                         } else {
3441                                 set_bit(QL_ALLMULTI, &qdev->flags);
3442                         }
3443                 }
3444         } else {
3445                 if (test_bit(QL_ALLMULTI, &qdev->flags)) {
3446                         if (ql_set_routing_reg
3447                             (qdev, RT_IDX_ALLMULTI_SLOT, RT_IDX_MCAST, 0)) {
3448                                 QPRINTK(qdev, HW, ERR,
3449                                         "Failed to clear all-multi mode.\n");
3450                         } else {
3451                                 clear_bit(QL_ALLMULTI, &qdev->flags);
3452                         }
3453                 }
3454         }
3455
3456         if (ndev->mc_count) {
3457                 for (i = 0, mc_ptr = ndev->mc_list; mc_ptr;
3458                      i++, mc_ptr = mc_ptr->next)
3459                         if (ql_set_mac_addr_reg(qdev, (u8 *) mc_ptr->dmi_addr,
3460                                                 MAC_ADDR_TYPE_MULTI_MAC, i)) {
3461                                 QPRINTK(qdev, HW, ERR,
3462                                         "Failed to loadmulticast address.\n");
3463                                 goto exit;
3464                         }
3465                 if (ql_set_routing_reg
3466                     (qdev, RT_IDX_MCAST_MATCH_SLOT, RT_IDX_MCAST_MATCH, 1)) {
3467                         QPRINTK(qdev, HW, ERR,
3468                                 "Failed to set multicast match mode.\n");
3469                 } else {
3470                         set_bit(QL_ALLMULTI, &qdev->flags);
3471                 }
3472         }
3473 exit:
3474         spin_unlock(&qdev->hw_lock);
3475 }
3476
3477 static int qlge_set_mac_address(struct net_device *ndev, void *p)
3478 {
3479         struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev);
3480         struct sockaddr *addr = p;
3481         int ret = 0;
3482
3483         if (netif_running(ndev))
3484                 return -EBUSY;
3485
3486         if (!is_valid_ether_addr(addr->sa_data))
3487                 return -EADDRNOTAVAIL;
3488         memcpy(ndev->dev_addr, addr->sa_data, ndev->addr_len);
3489
3490         spin_lock(&qdev->hw_lock);
3491         if (ql_set_mac_addr_reg(qdev, (u8 *) ndev->dev_addr,
3492                         MAC_ADDR_TYPE_CAM_MAC, qdev->func)) {/* Unicast */
3493                 QPRINTK(qdev, HW, ERR, "Failed to load MAC address.\n");
3494                 ret = -1;
3495         }
3496         spin_unlock(&qdev->hw_lock);
3497
3498         return ret;
3499 }
3500
3501 static void qlge_tx_timeout(struct net_device *ndev)
3502 {
3503         struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev);
3504         queue_delayed_work(qdev->workqueue, &qdev->asic_reset_work, 0);
3505 }
3506
3507 static void ql_asic_reset_work(struct work_struct *work)
3508 {
3509         struct ql_adapter *qdev =
3510             container_of(work, struct ql_adapter, asic_reset_work.work);
3511         ql_cycle_adapter(qdev);
3512 }
3513
3514 static void ql_get_board_info(struct ql_adapter *qdev)
3515 {
3516         qdev->func =
3517             (ql_read32(qdev, STS) & STS_FUNC_ID_MASK) >> STS_FUNC_ID_SHIFT;
3518         if (qdev->func) {
3519                 qdev->xg_sem_mask = SEM_XGMAC1_MASK;
3520                 qdev->port_link_up = STS_PL1;
3521                 qdev->port_init = STS_PI1;
3522                 qdev->mailbox_in = PROC_ADDR_MPI_RISC | PROC_ADDR_FUNC2_MBI;
3523                 qdev->mailbox_out = PROC_ADDR_MPI_RISC | PROC_ADDR_FUNC2_MBO;
3524         } else {
3525                 qdev->xg_sem_mask = SEM_XGMAC0_MASK;
3526                 qdev->port_link_up = STS_PL0;
3527                 qdev->port_init = STS_PI0;
3528                 qdev->mailbox_in = PROC_ADDR_MPI_RISC | PROC_ADDR_FUNC0_MBI;
3529                 qdev->mailbox_out = PROC_ADDR_MPI_RISC | PROC_ADDR_FUNC0_MBO;
3530         }
3531         qdev->chip_rev_id = ql_read32(qdev, REV_ID);
3532 }
3533
3534 static void ql_release_all(struct pci_dev *pdev)
3535 {
3536         struct net_device *ndev = pci_get_drvdata(pdev);
3537         struct ql_adapter *qdev = netdev_priv(ndev);
3538
3539         if (qdev->workqueue) {
3540                 destroy_workqueue(qdev->workqueue);
3541                 qdev->workqueue = NULL;
3542         }
3543         if (qdev->q_workqueue) {
3544                 destroy_workqueue(qdev->q_workqueue);
3545                 qdev->q_workqueue = NULL;
3546         }
3547         if (qdev->reg_base)
3548                 iounmap(qdev->reg_base);
3549         if (qdev->doorbell_area)
3550                 iounmap(qdev->doorbell_area);
3551         pci_release_regions(pdev);
3552         pci_set_drvdata(pdev, NULL);
3553 }
3554
3555 static int __devinit ql_init_device(struct pci_dev *pdev,
3556                                     struct net_device *ndev, int cards_found)
3557 {
3558         struct ql_adapter *qdev = netdev_priv(ndev);
3559         int pos, err = 0;
3560         u16 val16;
3561
3562         memset((void *)qdev, 0, sizeof(qdev));
3563         err = pci_enable_device(pdev);
3564         if (err) {
3565                 dev_err(&pdev->dev, "PCI device enable failed.\n");
3566                 return err;
3567         }
3568
3569         pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
3570         if (pos <= 0) {
3571                 dev_err(&pdev->dev, PFX "Cannot find PCI Express capability, "
3572                         "aborting.\n");
3573                 goto err_out;
3574         } else {
3575                 pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
3576                 val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
3577                 val16 |= (PCI_EXP_DEVCTL_CERE |
3578                           PCI_EXP_DEVCTL_NFERE |
3579                           PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE);
3580                 pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
3581         }
3582
3583         err = pci_request_regions(pdev, DRV_NAME);
3584         if (err) {
3585                 dev_err(&pdev->dev, "PCI region request failed.\n");
3586                 goto err_out;
3587         }
3588
3589         pci_set_master(pdev);
3590         if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
3591                 set_bit(QL_DMA64, &qdev->flags);
3592                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
3593         } else {
3594                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
3595                 if (!err)
3596                        err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
3597         }
3598
3599         if (err) {
3600                 dev_err(&pdev->dev, "No usable DMA configuration.\n");
3601                 goto err_out;
3602         }
3603
3604         pci_set_drvdata(pdev, ndev);
3605         qdev->reg_base =
3606             ioremap_nocache(pci_resource_start(pdev, 1),
3607                             pci_resource_len(pdev, 1));
3608         if (!qdev->reg_base) {
3609                 dev_err(&pdev->dev, "Register mapping failed.\n");
3610                 err = -ENOMEM;
3611                 goto err_out;
3612         }
3613
3614         qdev->doorbell_area_size = pci_resource_len(pdev, 3);
3615         qdev->doorbell_area =
3616             ioremap_nocache(pci_resource_start(pdev, 3),
3617                             pci_resource_len(pdev, 3));
3618         if (!qdev->doorbell_area) {
3619                 dev_err(&pdev->dev, "Doorbell register mapping failed.\n");
3620                 err = -ENOMEM;
3621                 goto err_out;
3622         }
3623
3624         ql_get_board_info(qdev);
3625         qdev->ndev = ndev;
3626         qdev->pdev = pdev;
3627         qdev->msg_enable = netif_msg_init(debug, default_msg);
3628         spin_lock_init(&qdev->hw_lock);
3629         spin_lock_init(&qdev->stats_lock);
3630
3631         /* make sure the EEPROM is good */
3632         err = ql_get_flash_params(qdev);
3633         if (err) {
3634                 dev_err(&pdev->dev, "Invalid FLASH.\n");
3635                 goto err_out;
3636         }
3637
3638         if (!is_valid_ether_addr(qdev->flash.mac_addr))
3639                 goto err_out;
3640
3641         memcpy(ndev->dev_addr, qdev->flash.mac_addr, ndev->addr_len);
3642         memcpy(ndev->perm_addr, ndev->dev_addr, ndev->addr_len);
3643
3644         /* Set up the default ring sizes. */
3645         qdev->tx_ring_size = NUM_TX_RING_ENTRIES;
3646         qdev->rx_ring_size = NUM_RX_RING_ENTRIES;
3647
3648         /* Set up the coalescing parameters. */
3649         qdev->rx_coalesce_usecs = DFLT_COALESCE_WAIT;
3650         qdev->tx_coalesce_usecs = DFLT_COALESCE_WAIT;
3651         qdev->rx_max_coalesced_frames = DFLT_INTER_FRAME_WAIT;
3652         qdev->tx_max_coalesced_frames = DFLT_INTER_FRAME_WAIT;
3653
3654         /*
3655          * Set up the operating parameters.
3656          */
3657         qdev->rx_csum = 1;
3658
3659         qdev->q_workqueue = create_workqueue(ndev->name);
3660         qdev->workqueue = create_singlethread_workqueue(ndev->name);
3661         INIT_DELAYED_WORK(&qdev->asic_reset_work, ql_asic_reset_work);
3662         INIT_DELAYED_WORK(&qdev->mpi_reset_work, ql_mpi_reset_work);
3663         INIT_DELAYED_WORK(&qdev->mpi_work, ql_mpi_work);
3664
3665         if (!cards_found) {
3666                 dev_info(&pdev->dev, "%s\n", DRV_STRING);
3667                 dev_info(&pdev->dev, "Driver name: %s, Version: %s.\n",
3668                          DRV_NAME, DRV_VERSION);
3669         }
3670         return 0;
3671 err_out:
3672         ql_release_all(pdev);
3673         pci_disable_device(pdev);
3674         return err;
3675 }
3676
3677
3678 static const struct net_device_ops qlge_netdev_ops = {
3679         .ndo_open               = qlge_open,
3680         .ndo_stop               = qlge_close,
3681         .ndo_start_xmit         = qlge_send,
3682         .ndo_change_mtu         = qlge_change_mtu,
3683         .ndo_get_stats          = qlge_get_stats,
3684         .ndo_set_multicast_list = qlge_set_multicast_list,
3685         .ndo_set_mac_address    = qlge_set_mac_address,
3686         .ndo_validate_addr      = eth_validate_addr,
3687         .ndo_tx_timeout         = qlge_tx_timeout,
3688         .ndo_vlan_rx_register   = ql_vlan_rx_register,
3689         .ndo_vlan_rx_add_vid    = ql_vlan_rx_add_vid,
3690         .ndo_vlan_rx_kill_vid   = ql_vlan_rx_kill_vid,
3691 };
3692
3693 static int __devinit qlge_probe(struct pci_dev *pdev,
3694                                 const struct pci_device_id *pci_entry)
3695 {
3696         struct net_device *ndev = NULL;
3697         struct ql_adapter *qdev = NULL;
3698         static int cards_found = 0;
3699         int err = 0;
3700
3701         ndev = alloc_etherdev(sizeof(struct ql_adapter));
3702         if (!ndev)
3703                 return -ENOMEM;
3704
3705         err = ql_init_device(pdev, ndev, cards_found);
3706         if (err < 0) {
3707                 free_netdev(ndev);
3708                 return err;
3709         }
3710
3711         qdev = netdev_priv(ndev);
3712         SET_NETDEV_DEV(ndev, &pdev->dev);
3713         ndev->features = (0
3714                           | NETIF_F_IP_CSUM
3715                           | NETIF_F_SG
3716                           | NETIF_F_TSO
3717                           | NETIF_F_TSO6
3718                           | NETIF_F_TSO_ECN
3719                           | NETIF_F_HW_VLAN_TX
3720                           | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER);
3721
3722         if (test_bit(QL_DMA64, &qdev->flags))
3723                 ndev->features |= NETIF_F_HIGHDMA;
3724
3725         /*
3726          * Set up net_device structure.
3727          */
3728         ndev->tx_queue_len = qdev->tx_ring_size;
3729         ndev->irq = pdev->irq;
3730
3731         ndev->netdev_ops = &qlge_netdev_ops;
3732         SET_ETHTOOL_OPS(ndev, &qlge_ethtool_ops);
3733         ndev->watchdog_timeo = 10 * HZ;
3734
3735         err = register_netdev(ndev);
3736         if (err) {
3737                 dev_err(&pdev->dev, "net device registration failed.\n");
3738                 ql_release_all(pdev);
3739                 pci_disable_device(pdev);
3740                 return err;
3741         }
3742         netif_carrier_off(ndev);
3743         netif_stop_queue(ndev);
3744         ql_display_dev_info(ndev);
3745         cards_found++;
3746         return 0;
3747 }
3748
3749 static void __devexit qlge_remove(struct pci_dev *pdev)
3750 {
3751         struct net_device *ndev = pci_get_drvdata(pdev);
3752         unregister_netdev(ndev);
3753         ql_release_all(pdev);
3754         pci_disable_device(pdev);
3755         free_netdev(ndev);
3756 }
3757
3758 /*
3759  * This callback is called by the PCI subsystem whenever
3760  * a PCI bus error is detected.
3761  */
3762 static pci_ers_result_t qlge_io_error_detected(struct pci_dev *pdev,
3763                                                enum pci_channel_state state)
3764 {
3765         struct net_device *ndev = pci_get_drvdata(pdev);
3766         struct ql_adapter *qdev = netdev_priv(ndev);
3767
3768         if (netif_running(ndev))
3769                 ql_adapter_down(qdev);
3770
3771         pci_disable_device(pdev);
3772
3773         /* Request a slot reset. */
3774         return PCI_ERS_RESULT_NEED_RESET;
3775 }
3776
3777 /*
3778  * This callback is called after the PCI buss has been reset.
3779  * Basically, this tries to restart the card from scratch.
3780  * This is a shortened version of the device probe/discovery code,
3781  * it resembles the first-half of the () routine.
3782  */
3783 static pci_ers_result_t qlge_io_slot_reset(struct pci_dev *pdev)
3784 {
3785         struct net_device *ndev = pci_get_drvdata(pdev);
3786         struct ql_adapter *qdev = netdev_priv(ndev);
3787
3788         if (pci_enable_device(pdev)) {
3789                 QPRINTK(qdev, IFUP, ERR,
3790                         "Cannot re-enable PCI device after reset.\n");
3791                 return PCI_ERS_RESULT_DISCONNECT;
3792         }
3793
3794         pci_set_master(pdev);
3795
3796         netif_carrier_off(ndev);
3797         netif_stop_queue(ndev);
3798         ql_adapter_reset(qdev);
3799
3800         /* Make sure the EEPROM is good */
3801         memcpy(ndev->perm_addr, ndev->dev_addr, ndev->addr_len);
3802
3803         if (!is_valid_ether_addr(ndev->perm_addr)) {
3804                 QPRINTK(qdev, IFUP, ERR, "After reset, invalid MAC address.\n");
3805                 return PCI_ERS_RESULT_DISCONNECT;
3806         }
3807
3808         return PCI_ERS_RESULT_RECOVERED;
3809 }
3810
3811 static void qlge_io_resume(struct pci_dev *pdev)
3812 {
3813         struct net_device *ndev = pci_get_drvdata(pdev);
3814         struct ql_adapter *qdev = netdev_priv(ndev);
3815
3816         pci_set_master(pdev);
3817
3818         if (netif_running(ndev)) {
3819                 if (ql_adapter_up(qdev)) {
3820                         QPRINTK(qdev, IFUP, ERR,
3821                                 "Device initialization failed after reset.\n");
3822                         return;
3823                 }
3824         }
3825
3826         netif_device_attach(ndev);
3827 }
3828
3829 static struct pci_error_handlers qlge_err_handler = {
3830         .error_detected = qlge_io_error_detected,
3831         .slot_reset = qlge_io_slot_reset,
3832         .resume = qlge_io_resume,
3833 };
3834
3835 static int qlge_suspend(struct pci_dev *pdev, pm_message_t state)
3836 {
3837         struct net_device *ndev = pci_get_drvdata(pdev);
3838         struct ql_adapter *qdev = netdev_priv(ndev);
3839         int err, i;
3840
3841         netif_device_detach(ndev);
3842
3843         if (netif_running(ndev)) {
3844                 err = ql_adapter_down(qdev);
3845                 if (!err)
3846                         return err;
3847         }
3848
3849         for (i = qdev->rss_ring_first_cq_id; i < qdev->rx_ring_count; i++)
3850                 netif_napi_del(&qdev->rx_ring[i].napi);
3851
3852         err = pci_save_state(pdev);
3853         if (err)
3854                 return err;
3855
3856         pci_disable_device(pdev);
3857
3858         pci_set_power_state(pdev, pci_choose_state(pdev, state));
3859
3860         return 0;
3861 }
3862
3863 #ifdef CONFIG_PM
3864 static int qlge_resume(struct pci_dev *pdev)
3865 {
3866         struct net_device *ndev = pci_get_drvdata(pdev);
3867         struct ql_adapter *qdev = netdev_priv(ndev);
3868         int err;
3869
3870         pci_set_power_state(pdev, PCI_D0);
3871         pci_restore_state(pdev);
3872         err = pci_enable_device(pdev);
3873         if (err) {
3874                 QPRINTK(qdev, IFUP, ERR, "Cannot enable PCI device from suspend\n");
3875                 return err;
3876         }
3877         pci_set_master(pdev);
3878
3879         pci_enable_wake(pdev, PCI_D3hot, 0);
3880         pci_enable_wake(pdev, PCI_D3cold, 0);
3881
3882         if (netif_running(ndev)) {
3883                 err = ql_adapter_up(qdev);
3884                 if (err)
3885                         return err;
3886         }
3887
3888         netif_device_attach(ndev);
3889
3890         return 0;
3891 }
3892 #endif /* CONFIG_PM */
3893
3894 static void qlge_shutdown(struct pci_dev *pdev)
3895 {
3896         qlge_suspend(pdev, PMSG_SUSPEND);
3897 }
3898
3899 static struct pci_driver qlge_driver = {
3900         .name = DRV_NAME,
3901         .id_table = qlge_pci_tbl,
3902         .probe = qlge_probe,
3903         .remove = __devexit_p(qlge_remove),
3904 #ifdef CONFIG_PM
3905         .suspend = qlge_suspend,
3906         .resume = qlge_resume,
3907 #endif
3908         .shutdown = qlge_shutdown,
3909         .err_handler = &qlge_err_handler
3910 };
3911
3912 static int __init qlge_init_module(void)
3913 {
3914         return pci_register_driver(&qlge_driver);
3915 }
3916
3917 static void __exit qlge_exit(void)
3918 {
3919         pci_unregister_driver(&qlge_driver);
3920 }
3921
3922 module_init(qlge_init_module);
3923 module_exit(qlge_exit);