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         switch (type) {
 251         case MAC_ADDR_TYPE_MULTI_MAC:
 252         case MAC_ADDR_TYPE_CAM_MAC:
 253                 {
 254                         status =
 255                             ql_wait_reg_rdy(qdev,
 256                                 MAC_ADDR_IDX, MAC_ADDR_MW, 0);
 257                         if (status)
 258                                 goto exit;
 259                         ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
 260                                    (index << MAC_ADDR_IDX_SHIFT) | /* index */
 261                                    MAC_ADDR_ADR | MAC_ADDR_RS | type); /* type */
 262                         status =
 263                             ql_wait_reg_rdy(qdev,
 264                                 MAC_ADDR_IDX, MAC_ADDR_MR, 0);
 265                         if (status)
 266                                 goto exit;
 267                         *value++ = ql_read32(qdev, MAC_ADDR_DATA);
 268                         status =
 269                             ql_wait_reg_rdy(qdev,
 270                                 MAC_ADDR_IDX, MAC_ADDR_MW, 0);
 271                         if (status)
 272                                 goto exit;
 273                         ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
 274                                    (index << MAC_ADDR_IDX_SHIFT) | /* index */
 275                                    MAC_ADDR_ADR | MAC_ADDR_RS | type); /* type */
 276                         status =
 277                             ql_wait_reg_rdy(qdev,
 278                                 MAC_ADDR_IDX, MAC_ADDR_MR, 0);
 279                         if (status)
 280                                 goto exit;
 281                         *value++ = ql_read32(qdev, MAC_ADDR_DATA);
 282                         if (type == MAC_ADDR_TYPE_CAM_MAC) {
 283                                 status =
 284                                     ql_wait_reg_rdy(qdev,
 285                                         MAC_ADDR_IDX, MAC_ADDR_MW, 0);
 286                                 if (status)
 287                                         goto exit;
 288                                 ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
 289                                            (index << MAC_ADDR_IDX_SHIFT) | /* index */
 290                                            MAC_ADDR_ADR | MAC_ADDR_RS | type); /* type */
 291                                 status =
 292                                     ql_wait_reg_rdy(qdev, MAC_ADDR_IDX,
 293                                                     MAC_ADDR_MR, 0);
 294                                 if (status)
 295                                         goto exit;
 296                                 *value++ = ql_read32(qdev, MAC_ADDR_DATA);
 297                         }
 298                         break;
 299                 }
 300         case MAC_ADDR_TYPE_VLAN:
 301         case MAC_ADDR_TYPE_MULTI_FLTR:
 302         default:
 303                 QPRINTK(qdev, IFUP, CRIT,
 304                         "Address type %d not yet supported.\n", type);
 305                 status = -EPERM;
 306         }
 307 exit:
 308         return status;
 309 }
 310
 311 /* Set up a MAC, multicast or VLAN address for the
 312  * inbound frame matching.
 313  */
 314 static int ql_set_mac_addr_reg(struct ql_adapter *qdev, u8 *addr, u32 type,
 315                                u16 index)
 316 {
 317         u32 offset = 0;
 318         int status = 0;
 319
 320         switch (type) {
 321         case MAC_ADDR_TYPE_MULTI_MAC:
 322         case MAC_ADDR_TYPE_CAM_MAC:
 323                 {
 324                         u32 cam_output;
 325                         u32 upper = (addr[0] << 8) | addr[1];
 326                         u32 lower =
 327                             (addr[2] << 24) | (addr[3] << 16) | (addr[4] << 8) |
 328                             (addr[5]);
 329
 330                         QPRINTK(qdev, IFUP, INFO,
 331                                 "Adding %s address %pM"
 332                                 " at index %d in the CAM.\n",
 333                                 ((type ==
 334                                   MAC_ADDR_TYPE_MULTI_MAC) ? "MULTICAST" :
 335                                  "UNICAST"), addr, index);
 336
 337                         status =
 338                             ql_wait_reg_rdy(qdev,
 339                                 MAC_ADDR_IDX, MAC_ADDR_MW, 0);
 340                         if (status)
 341                                 goto exit;
 342                         ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
 343                                    (index << MAC_ADDR_IDX_SHIFT) | /* index */
 344                                    type);       /* type */
 345                         ql_write32(qdev, MAC_ADDR_DATA, lower);
 346                         status =
 347                             ql_wait_reg_rdy(qdev,
 348                                 MAC_ADDR_IDX, MAC_ADDR_MW, 0);
 349                         if (status)
 350                                 goto exit;
 351                         ql_write32(qdev, MAC_ADDR_IDX, (offset++) | /* offset */
 352                                    (index << MAC_ADDR_IDX_SHIFT) | /* index */
 353                                    type);       /* type */
 354                         ql_write32(qdev, MAC_ADDR_DATA, upper);
 355                         status =
 356                             ql_wait_reg_rdy(qdev,
 357                                 MAC_ADDR_IDX, MAC_ADDR_MW, 0);
 358                         if (status)
 359                                 goto exit;
 360                         ql_write32(qdev, MAC_ADDR_IDX, (offset) |       /* offset */
 361                                    (index << MAC_ADDR_IDX_SHIFT) |      /* index */
 362                                    type);       /* type */
 363                         /* This field should also include the queue id
 364                            and possibly the function id.  Right now we hardcode
 365                            the route field to NIC core.
 366                          */
 367                         if (type == MAC_ADDR_TYPE_CAM_MAC) {
 368                                 cam_output = (CAM_OUT_ROUTE_NIC |
 369                                               (qdev->
 370                                                func << CAM_OUT_FUNC_SHIFT) |
 371                                               (qdev->
 372                                                rss_ring_first_cq_id <<
 373                                                CAM_OUT_CQ_ID_SHIFT));
 374                                 if (qdev->vlgrp)
 375                                         cam_output |= CAM_OUT_RV;
 376                                 /* route to NIC core */
 377                                 ql_write32(qdev, MAC_ADDR_DATA, cam_output);
 378                         }
 379                         break;
 380                 }
 381         case MAC_ADDR_TYPE_VLAN:
 382                 {
 383                         u32 enable_bit = *((u32 *) &addr[0]);
 384                         /* For VLAN, the addr actually holds a bit that
 385                          * either enables or disables the vlan id we are
 386                          * addressing. It's either MAC_ADDR_E on or off.
 387                          * That's bit-27 we're talking about.
 388                          */
 389                         QPRINTK(qdev, IFUP, INFO, "%s VLAN ID %d %s the CAM.\n",
 390                                 (enable_bit ? "Adding" : "Removing"),
 391                                 index, (enable_bit ? "to" : "from"));
 392
 393                         status =
 394                             ql_wait_reg_rdy(qdev,
 395                                 MAC_ADDR_IDX, MAC_ADDR_MW, 0);
 396                         if (status)
 397                                 goto exit;
 398                         ql_write32(qdev, MAC_ADDR_IDX, offset | /* offset */
 399                                    (index << MAC_ADDR_IDX_SHIFT) |      /* index */
 400                                    type |       /* type */
 401                                    enable_bit); /* enable/disable */
 402                         break;
 403                 }
 404         case MAC_ADDR_TYPE_MULTI_FLTR:
 405         default:
 406                 QPRINTK(qdev, IFUP, CRIT,
 407                         "Address type %d not yet supported.\n", type);
 408                 status = -EPERM;
 409         }
 410 exit:
 411         return status;
 412 }
 413
 414 /* Get a specific frame routing value from the CAM.
 415  * Used for debug and reg dump.
 416  */
 417 int ql_get_routing_reg(struct ql_adapter *qdev, u32 index, u32 *value)
 418 {
 419         int status = 0;
 420
 421         status = ql_wait_reg_rdy(qdev, RT_IDX, RT_IDX_MW, 0);
 422         if (status)
 423                 goto exit;
 424
 425         ql_write32(qdev, RT_IDX,
 426                    RT_IDX_TYPE_NICQ | RT_IDX_RS | (index << RT_IDX_IDX_SHIFT));
 427         status = ql_wait_reg_rdy(qdev, RT_IDX, RT_IDX_MR, 0);
 428         if (status)
 429                 goto exit;
 430         *value = ql_read32(qdev, RT_DATA);
 431 exit:
 432         return status;
 433 }
 434
 435 /* The NIC function for this chip has 16 routing indexes.  Each one can be used
 436  * to route different frame types to various inbound queues.  We send broadcast/
 437  * multicast/error frames to the default queue for slow handling,
 438  * and CAM hit/RSS frames to the fast handling queues.
 439  */
 440 static int ql_set_routing_reg(struct ql_adapter *qdev, u32 index, u32 mask,
 441                               int enable)
 442 {
 443         int status = -EINVAL; /* Return error if no mask match. */
 444         u32 value = 0;
 445
 446         QPRINTK(qdev, IFUP, DEBUG,
 447                 "%s %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s mask %s the routing reg.\n",
 448                 (enable ? "Adding" : "Removing"),
 449                 ((index == RT_IDX_ALL_ERR_SLOT) ? "MAC ERROR/ALL ERROR" : ""),
 450                 ((index == RT_IDX_IP_CSUM_ERR_SLOT) ? "IP CSUM ERROR" : ""),
 451                 ((index ==
 452                   RT_IDX_TCP_UDP_CSUM_ERR_SLOT) ? "TCP/UDP CSUM ERROR" : ""),
 453                 ((index == RT_IDX_BCAST_SLOT) ? "BROADCAST" : ""),
 454                 ((index == RT_IDX_MCAST_MATCH_SLOT) ? "MULTICAST MATCH" : ""),
 455                 ((index == RT_IDX_ALLMULTI_SLOT) ? "ALL MULTICAST MATCH" : ""),
 456                 ((index == RT_IDX_UNUSED6_SLOT) ? "UNUSED6" : ""),
 457                 ((index == RT_IDX_UNUSED7_SLOT) ? "UNUSED7" : ""),
 458                 ((index == RT_IDX_RSS_MATCH_SLOT) ? "RSS ALL/IPV4 MATCH" : ""),
 459                 ((index == RT_IDX_RSS_IPV6_SLOT) ? "RSS IPV6" : ""),
 460                 ((index == RT_IDX_RSS_TCP4_SLOT) ? "RSS TCP4" : ""),
 461                 ((index == RT_IDX_RSS_TCP6_SLOT) ? "RSS TCP6" : ""),
 462                 ((index == RT_IDX_CAM_HIT_SLOT) ? "CAM HIT" : ""),
 463                 ((index == RT_IDX_UNUSED013) ? "UNUSED13" : ""),
 464                 ((index == RT_IDX_UNUSED014) ? "UNUSED14" : ""),
 465                 ((index == RT_IDX_PROMISCUOUS_SLOT) ? "PROMISCUOUS" : ""),
 466                 (enable ? "to" : "from"));
 467
 468         switch (mask) {
 469         case RT_IDX_CAM_HIT:
 470                 {
 471                         value = RT_IDX_DST_CAM_Q |      /* dest */
 472                             RT_IDX_TYPE_NICQ |  /* type */
 473                             (RT_IDX_CAM_HIT_SLOT << RT_IDX_IDX_SHIFT);/* index */
 474                         break;
 475                 }
 476         case RT_IDX_VALID:      /* Promiscuous Mode frames. */
 477                 {
 478                         value = RT_IDX_DST_DFLT_Q |     /* dest */
 479                             RT_IDX_TYPE_NICQ |  /* type */
 480                             (RT_IDX_PROMISCUOUS_SLOT << RT_IDX_IDX_SHIFT);/* index */
 481                         break;
 482                 }
 483         case RT_IDX_ERR:        /* Pass up MAC,IP,TCP/UDP error frames. */
 484                 {
 485                         value = RT_IDX_DST_DFLT_Q |     /* dest */
 486                             RT_IDX_TYPE_NICQ |  /* type */
 487                             (RT_IDX_ALL_ERR_SLOT << RT_IDX_IDX_SHIFT);/* index */
 488                         break;
 489                 }
 490         case RT_IDX_BCAST:      /* Pass up Broadcast frames to default Q. */
 491                 {
 492                         value = RT_IDX_DST_DFLT_Q |     /* dest */
 493                             RT_IDX_TYPE_NICQ |  /* type */
 494                             (RT_IDX_BCAST_SLOT << RT_IDX_IDX_SHIFT);/* index */
 495                         break;
 496                 }
 497         case RT_IDX_MCAST:      /* Pass up All Multicast frames. */
 498                 {
 499                         value = RT_IDX_DST_CAM_Q |      /* dest */
 500                             RT_IDX_TYPE_NICQ |  /* type */
 501                             (RT_IDX_ALLMULTI_SLOT << RT_IDX_IDX_SHIFT);/* index */
 502                         break;
 503                 }
 504         case RT_IDX_MCAST_MATCH:        /* Pass up matched Multicast frames. */
 505                 {
 506                         value = RT_IDX_DST_CAM_Q |      /* dest */
 507                             RT_IDX_TYPE_NICQ |  /* type */
 508                             (RT_IDX_MCAST_MATCH_SLOT << RT_IDX_IDX_SHIFT);/* index */
 509                         break;
 510                 }
 511         case RT_IDX_RSS_MATCH:  /* Pass up matched RSS frames. */
 512                 {
 513                         value = RT_IDX_DST_RSS |        /* dest */
 514                             RT_IDX_TYPE_NICQ |  /* type */
 515                             (RT_IDX_RSS_MATCH_SLOT << RT_IDX_IDX_SHIFT);/* index */
 516                         break;
 517                 }
 518         case 0:         /* Clear the E-bit on an entry. */
 519                 {
 520                         value = RT_IDX_DST_DFLT_Q |     /* dest */
 521                             RT_IDX_TYPE_NICQ |  /* type */
 522                             (index << RT_IDX_IDX_SHIFT);/* index */
 523                         break;
 524                 }
 525         default:
 526                 QPRINTK(qdev, IFUP, ERR, "Mask type %d not yet supported.\n",
 527                         mask);
 528                 status = -EPERM;
 529                 goto exit;
 530         }
 531
 532         if (value) {
 533                 status = ql_wait_reg_rdy(qdev, RT_IDX, RT_IDX_MW, 0);
 534                 if (status)
 535                         goto exit;
 536                 value |= (enable ? RT_IDX_E : 0);
 537                 ql_write32(qdev, RT_IDX, value);
 538                 ql_write32(qdev, RT_DATA, enable ? mask : 0);
 539         }
 540 exit:
 541         return status;
 542 }
 543
 544 static void ql_enable_interrupts(struct ql_adapter *qdev)
 545 {
 546         ql_write32(qdev, INTR_EN, (INTR_EN_EI << 16) | INTR_EN_EI);
 547 }
 548
 549 static void ql_disable_interrupts(struct ql_adapter *qdev)
 550 {
 551         ql_write32(qdev, INTR_EN, (INTR_EN_EI << 16));
 552 }
 553
 554 /* If we're running with multiple MSI-X vectors then we enable on the fly.
 555  * Otherwise, we may have multiple outstanding workers and don't want to
 556  * enable until the last one finishes. In this case, the irq_cnt gets
 557  * incremented everytime we queue a worker and decremented everytime
 558  * a worker finishes.  Once it hits zero we enable the interrupt.
 559  */
 560 u32 ql_enable_completion_interrupt(struct ql_adapter *qdev, u32 intr)
 561 {
 562         u32 var = 0;
 563         unsigned long hw_flags = 0;
 564         struct intr_context *ctx = qdev->intr_context + intr;
 565
 566         if (likely(test_bit(QL_MSIX_ENABLED, &qdev->flags) && intr)) {
 567                 /* Always enable if we're MSIX multi interrupts and
 568                  * it's not the default (zeroeth) interrupt.
 569                  */
 570                 ql_write32(qdev, INTR_EN,
 571                            ctx->intr_en_mask);
 572                 var = ql_read32(qdev, STS);
 573                 return var;
 574         }
 575
 576         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
 577         if (atomic_dec_and_test(&ctx->irq_cnt)) {
 578                 ql_write32(qdev, INTR_EN,
 579                            ctx->intr_en_mask);
 580                 var = ql_read32(qdev, STS);
 581         }
 582         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
 583         return var;
 584 }
 585
 586 static u32 ql_disable_completion_interrupt(struct ql_adapter *qdev, u32 intr)
 587 {
 588         u32 var = 0;
 589         unsigned long hw_flags;
 590         struct intr_context *ctx;
 591
 592         /* HW disables for us if we're MSIX multi interrupts and
 593          * it's not the default (zeroeth) interrupt.
 594          */
 595         if (likely(test_bit(QL_MSIX_ENABLED, &qdev->flags) && intr))
 596                 return 0;
 597
 598         ctx = qdev->intr_context + intr;
 599         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
 600         if (!atomic_read(&ctx->irq_cnt)) {
 601                 ql_write32(qdev, INTR_EN,
 602                 ctx->intr_dis_mask);
 603                 var = ql_read32(qdev, STS);
 604         }
 605         atomic_inc(&ctx->irq_cnt);
 606         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
 607         return var;
 608 }
 609
 610 static void ql_enable_all_completion_interrupts(struct ql_adapter *qdev)
 611 {
 612         int i;
 613         for (i = 0; i < qdev->intr_count; i++) {
 614                 /* The enable call does a atomic_dec_and_test
 615                  * and enables only if the result is zero.
 616                  * So we precharge it here.
 617                  */
 618                 if (unlikely(!test_bit(QL_MSIX_ENABLED, &qdev->flags) ||
 619                         i == 0))
 620                         atomic_set(&qdev->intr_context[i].irq_cnt, 1);
 621                 ql_enable_completion_interrupt(qdev, i);
 622         }
 623
 624 }
 625
 626 static int ql_read_flash_word(struct ql_adapter *qdev, int offset, __le32 *data)
 627 {
 628         int status = 0;
 629         /* wait for reg to come ready */
 630         status = ql_wait_reg_rdy(qdev,
 631                         FLASH_ADDR, FLASH_ADDR_RDY, FLASH_ADDR_ERR);
 632         if (status)
 633                 goto exit;
 634         /* set up for reg read */
 635         ql_write32(qdev, FLASH_ADDR, FLASH_ADDR_R | offset);
 636         /* wait for reg to come ready */
 637         status = ql_wait_reg_rdy(qdev,
 638                         FLASH_ADDR, FLASH_ADDR_RDY, FLASH_ADDR_ERR);
 639         if (status)
 640                 goto exit;
 641          /* This data is stored on flash as an array of
 642          * __le32.  Since ql_read32() returns cpu endian
 643          * we need to swap it back.
 644          */
 645         *data = cpu_to_le32(ql_read32(qdev, FLASH_DATA));
 646 exit:
 647         return status;
 648 }
 649
 650 static int ql_get_flash_params(struct ql_adapter *qdev)
 651 {
 652         int i;
 653         int status;
 654         __le32 *p = (__le32 *)&qdev->flash;
 655         u32 offset = 0;
 656
 657         /* Second function's parameters follow the first
 658          * function's.
 659          */
 660         if (qdev->func)
 661                 offset = sizeof(qdev->flash) / sizeof(u32);
 662
 663         if (ql_sem_spinlock(qdev, SEM_FLASH_MASK))
 664                 return -ETIMEDOUT;
 665
 666         for (i = 0; i < sizeof(qdev->flash) / sizeof(u32); i++, p++) {
 667                 status = ql_read_flash_word(qdev, i+offset, p);
 668                 if (status) {
 669                         QPRINTK(qdev, IFUP, ERR, "Error reading flash.\n");
 670                         goto exit;
 671                 }
 672
 673         }
 674 exit:
 675         ql_sem_unlock(qdev, SEM_FLASH_MASK);
 676         return status;
 677 }
 678
 679 /* xgmac register are located behind the xgmac_addr and xgmac_data
 680  * register pair.  Each read/write requires us to wait for the ready
 681  * bit before reading/writing the data.
 682  */
 683 static int ql_write_xgmac_reg(struct ql_adapter *qdev, u32 reg, u32 data)
 684 {
 685         int status;
 686         /* wait for reg to come ready */
 687         status = ql_wait_reg_rdy(qdev,
 688                         XGMAC_ADDR, XGMAC_ADDR_RDY, XGMAC_ADDR_XME);
 689         if (status)
 690                 return status;
 691         /* write the data to the data reg */
 692         ql_write32(qdev, XGMAC_DATA, data);
 693         /* trigger the write */
 694         ql_write32(qdev, XGMAC_ADDR, reg);
 695         return status;
 696 }
 697
 698 /* xgmac register are located behind the xgmac_addr and xgmac_data
 699  * register pair.  Each read/write requires us to wait for the ready
 700  * bit before reading/writing the data.
 701  */
 702 int ql_read_xgmac_reg(struct ql_adapter *qdev, u32 reg, u32 *data)
 703 {
 704         int status = 0;
 705         /* wait for reg to come ready */
 706         status = ql_wait_reg_rdy(qdev,
 707                         XGMAC_ADDR, XGMAC_ADDR_RDY, XGMAC_ADDR_XME);
 708         if (status)
 709                 goto exit;
 710         /* set up for reg read */
 711         ql_write32(qdev, XGMAC_ADDR, reg | XGMAC_ADDR_R);
 712         /* wait for reg to come ready */
 713         status = ql_wait_reg_rdy(qdev,
 714                         XGMAC_ADDR, XGMAC_ADDR_RDY, XGMAC_ADDR_XME);
 715         if (status)
 716                 goto exit;
 717         /* get the data */
 718         *data = ql_read32(qdev, XGMAC_DATA);
 719 exit:
 720         return status;
 721 }
 722
 723 /* This is used for reading the 64-bit statistics regs. */
 724 int ql_read_xgmac_reg64(struct ql_adapter *qdev, u32 reg, u64 *data)
 725 {
 726         int status = 0;
 727         u32 hi = 0;
 728         u32 lo = 0;
 729
 730         status = ql_read_xgmac_reg(qdev, reg, &lo);
 731         if (status)
 732                 goto exit;
 733
 734         status = ql_read_xgmac_reg(qdev, reg + 4, &hi);
 735         if (status)
 736                 goto exit;
 737
 738         *data = (u64) lo | ((u64) hi << 32);
 739
 740 exit:
 741         return status;
 742 }
 743
 744 /* Take the MAC Core out of reset.
 745  * Enable statistics counting.
 746  * Take the transmitter/receiver out of reset.
 747  * This functionality may be done in the MPI firmware at a
 748  * later date.
 749  */
 750 static int ql_port_initialize(struct ql_adapter *qdev)
 751 {
 752         int status = 0;
 753         u32 data;
 754
 755         if (ql_sem_trylock(qdev, qdev->xg_sem_mask)) {
 756                 /* Another function has the semaphore, so
 757                  * wait for the port init bit to come ready.
 758                  */
 759                 QPRINTK(qdev, LINK, INFO,
 760                         "Another function has the semaphore, so wait for the port init bit to come ready.\n");
 761                 status = ql_wait_reg_rdy(qdev, STS, qdev->port_init, 0);
 762                 if (status) {
 763                         QPRINTK(qdev, LINK, CRIT,
 764                                 "Port initialize timed out.\n");
 765                 }
 766                 return status;
 767         }
 768
 769         QPRINTK(qdev, LINK, INFO, "Got xgmac semaphore!.\n");
 770         /* Set the core reset. */
 771         status = ql_read_xgmac_reg(qdev, GLOBAL_CFG, &data);
 772         if (status)
 773                 goto end;
 774         data |= GLOBAL_CFG_RESET;
 775         status = ql_write_xgmac_reg(qdev, GLOBAL_CFG, data);
 776         if (status)
 777                 goto end;
 778
 779         /* Clear the core reset and turn on jumbo for receiver. */
 780         data &= ~GLOBAL_CFG_RESET;      /* Clear core reset. */
 781         data |= GLOBAL_CFG_JUMBO;       /* Turn on jumbo. */
 782         data |= GLOBAL_CFG_TX_STAT_EN;
 783         data |= GLOBAL_CFG_RX_STAT_EN;
 784         status = ql_write_xgmac_reg(qdev, GLOBAL_CFG, data);
 785         if (status)
 786                 goto end;
 787
 788         /* Enable transmitter, and clear it's reset. */
 789         status = ql_read_xgmac_reg(qdev, TX_CFG, &data);
 790         if (status)
 791                 goto end;
 792         data &= ~TX_CFG_RESET;  /* Clear the TX MAC reset. */
 793         data |= TX_CFG_EN;      /* Enable the transmitter. */
 794         status = ql_write_xgmac_reg(qdev, TX_CFG, data);
 795         if (status)
 796                 goto end;
 797
 798         /* Enable receiver and clear it's reset. */
 799         status = ql_read_xgmac_reg(qdev, RX_CFG, &data);
 800         if (status)
 801                 goto end;
 802         data &= ~RX_CFG_RESET;  /* Clear the RX MAC reset. */
 803         data |= RX_CFG_EN;      /* Enable the receiver. */
 804         status = ql_write_xgmac_reg(qdev, RX_CFG, data);
 805         if (status)
 806                 goto end;
 807
 808         /* Turn on jumbo. */
 809         status =
 810             ql_write_xgmac_reg(qdev, MAC_TX_PARAMS, MAC_TX_PARAMS_JUMBO | (0x2580 << 16));
 811         if (status)
 812                 goto end;
 813         status =
 814             ql_write_xgmac_reg(qdev, MAC_RX_PARAMS, 0x2580);
 815         if (status)
 816                 goto end;
 817
 818         /* Signal to the world that the port is enabled.        */
 819         ql_write32(qdev, STS, ((qdev->port_init << 16) | qdev->port_init));
 820 end:
 821         ql_sem_unlock(qdev, qdev->xg_sem_mask);
 822         return status;
 823 }
 824
 825 /* Get the next large buffer. */
 826 static struct bq_desc *ql_get_curr_lbuf(struct rx_ring *rx_ring)
 827 {
 828         struct bq_desc *lbq_desc = &rx_ring->lbq[rx_ring->lbq_curr_idx];
 829         rx_ring->lbq_curr_idx++;
 830         if (rx_ring->lbq_curr_idx == rx_ring->lbq_len)
 831                 rx_ring->lbq_curr_idx = 0;
 832         rx_ring->lbq_free_cnt++;
 833         return lbq_desc;
 834 }
 835
 836 /* Get the next small buffer. */
 837 static struct bq_desc *ql_get_curr_sbuf(struct rx_ring *rx_ring)
 838 {
 839         struct bq_desc *sbq_desc = &rx_ring->sbq[rx_ring->sbq_curr_idx];
 840         rx_ring->sbq_curr_idx++;
 841         if (rx_ring->sbq_curr_idx == rx_ring->sbq_len)
 842                 rx_ring->sbq_curr_idx = 0;
 843         rx_ring->sbq_free_cnt++;
 844         return sbq_desc;
 845 }
 846
 847 /* Update an rx ring index. */
 848 static void ql_update_cq(struct rx_ring *rx_ring)
 849 {
 850         rx_ring->cnsmr_idx++;
 851         rx_ring->curr_entry++;
 852         if (unlikely(rx_ring->cnsmr_idx == rx_ring->cq_len)) {
 853                 rx_ring->cnsmr_idx = 0;
 854                 rx_ring->curr_entry = rx_ring->cq_base;
 855         }
 856 }
 857
 858 static void ql_write_cq_idx(struct rx_ring *rx_ring)
 859 {
 860         ql_write_db_reg(rx_ring->cnsmr_idx, rx_ring->cnsmr_idx_db_reg);
 861 }
 862
 863 /* Process (refill) a large buffer queue. */
 864 static void ql_update_lbq(struct ql_adapter *qdev, struct rx_ring *rx_ring)
 865 {
 866         u32 clean_idx = rx_ring->lbq_clean_idx;
 867         u32 start_idx = clean_idx;
 868         struct bq_desc *lbq_desc;
 869         u64 map;
 870         int i;
 871
 872         while (rx_ring->lbq_free_cnt > 16) {
 873                 for (i = 0; i < 16; i++) {
 874                         QPRINTK(qdev, RX_STATUS, DEBUG,
 875                                 "lbq: try cleaning clean_idx = %d.\n",
 876                                 clean_idx);
 877                         lbq_desc = &rx_ring->lbq[clean_idx];
 878                         if (lbq_desc->p.lbq_page == NULL) {
 879                                 QPRINTK(qdev, RX_STATUS, DEBUG,
 880                                         "lbq: getting new page for index %d.\n",
 881                                         lbq_desc->index);
 882                                 lbq_desc->p.lbq_page = alloc_page(GFP_ATOMIC);
 883                                 if (lbq_desc->p.lbq_page == NULL) {
 884                                         rx_ring->lbq_clean_idx = clean_idx;
 885                                         QPRINTK(qdev, RX_STATUS, ERR,
 886                                                 "Couldn't get a page.\n");
 887                                         return;
 888                                 }
 889                                 map = pci_map_page(qdev->pdev,
 890                                                    lbq_desc->p.lbq_page,
 891                                                    0, PAGE_SIZE,
 892                                                    PCI_DMA_FROMDEVICE);
 893                                 if (pci_dma_mapping_error(qdev->pdev, map)) {
 894                                         rx_ring->lbq_clean_idx = clean_idx;
 895                                         put_page(lbq_desc->p.lbq_page);
 896                                         lbq_desc->p.lbq_page = NULL;
 897                                         QPRINTK(qdev, RX_STATUS, ERR,
 898                                                 "PCI mapping failed.\n");
 899                                         return;
 900                                 }
 901                                 pci_unmap_addr_set(lbq_desc, mapaddr, map);
 902                                 pci_unmap_len_set(lbq_desc, maplen, PAGE_SIZE);
 903                                 *lbq_desc->addr = cpu_to_le64(map);
 904                         }
 905                         clean_idx++;
 906                         if (clean_idx == rx_ring->lbq_len)
 907                                 clean_idx = 0;
 908                 }
 909
 910                 rx_ring->lbq_clean_idx = clean_idx;
 911                 rx_ring->lbq_prod_idx += 16;
 912                 if (rx_ring->lbq_prod_idx == rx_ring->lbq_len)
 913                         rx_ring->lbq_prod_idx = 0;
 914                 rx_ring->lbq_free_cnt -= 16;
 915         }
 916
 917         if (start_idx != clean_idx) {
 918                 QPRINTK(qdev, RX_STATUS, DEBUG,
 919                         "lbq: updating prod idx = %d.\n",
 920                         rx_ring->lbq_prod_idx);
 921                 ql_write_db_reg(rx_ring->lbq_prod_idx,
 922                                 rx_ring->lbq_prod_idx_db_reg);
 923         }
 924 }
 925
 926 /* Process (refill) a small buffer queue. */
 927 static void ql_update_sbq(struct ql_adapter *qdev, struct rx_ring *rx_ring)
 928 {
 929         u32 clean_idx = rx_ring->sbq_clean_idx;
 930         u32 start_idx = clean_idx;
 931         struct bq_desc *sbq_desc;
 932         u64 map;
 933         int i;
 934
 935         while (rx_ring->sbq_free_cnt > 16) {
 936                 for (i = 0; i < 16; i++) {
 937                         sbq_desc = &rx_ring->sbq[clean_idx];
 938                         QPRINTK(qdev, RX_STATUS, DEBUG,
 939                                 "sbq: try cleaning clean_idx = %d.\n",
 940                                 clean_idx);
 941                         if (sbq_desc->p.skb == NULL) {
 942                                 QPRINTK(qdev, RX_STATUS, DEBUG,
 943                                         "sbq: getting new skb for index %d.\n",
 944                                         sbq_desc->index);
 945                                 sbq_desc->p.skb =
 946                                     netdev_alloc_skb(qdev->ndev,
 947                                                      rx_ring->sbq_buf_size);
 948                                 if (sbq_desc->p.skb == NULL) {
 949                                         QPRINTK(qdev, PROBE, ERR,
 950                                                 "Couldn't get an skb.\n");
 951                                         rx_ring->sbq_clean_idx = clean_idx;
 952                                         return;
 953                                 }
 954                                 skb_reserve(sbq_desc->p.skb, QLGE_SB_PAD);
 955                                 map = pci_map_single(qdev->pdev,
 956                                                      sbq_desc->p.skb->data,
 957                                                      rx_ring->sbq_buf_size /
 958                                                      2, PCI_DMA_FROMDEVICE);
 959                                 if (pci_dma_mapping_error(qdev->pdev, map)) {
 960                                         QPRINTK(qdev, IFUP, ERR, "PCI mapping failed.\n");
 961                                         rx_ring->sbq_clean_idx = clean_idx;
 962                                         dev_kfree_skb_any(sbq_desc->p.skb);
 963                                         sbq_desc->p.skb = NULL;
 964                                         return;
 965                                 }
 966                                 pci_unmap_addr_set(sbq_desc, mapaddr, map);
 967                                 pci_unmap_len_set(sbq_desc, maplen,
 968                                                   rx_ring->sbq_buf_size / 2);
 969                                 *sbq_desc->addr = cpu_to_le64(map);
 970                         }
 971
 972                         clean_idx++;
 973                         if (clean_idx == rx_ring->sbq_len)
 974                                 clean_idx = 0;
 975                 }
 976                 rx_ring->sbq_clean_idx = clean_idx;
 977                 rx_ring->sbq_prod_idx += 16;
 978                 if (rx_ring->sbq_prod_idx == rx_ring->sbq_len)
 979                         rx_ring->sbq_prod_idx = 0;
 980                 rx_ring->sbq_free_cnt -= 16;
 981         }
 982
 983         if (start_idx != clean_idx) {
 984                 QPRINTK(qdev, RX_STATUS, DEBUG,
 985                         "sbq: updating prod idx = %d.\n",
 986                         rx_ring->sbq_prod_idx);
 987                 ql_write_db_reg(rx_ring->sbq_prod_idx,
 988                                 rx_ring->sbq_prod_idx_db_reg);
 989         }
 990 }
 991
 992 static void ql_update_buffer_queues(struct ql_adapter *qdev,
 993                                     struct rx_ring *rx_ring)
 994 {
 995         ql_update_sbq(qdev, rx_ring);
 996         ql_update_lbq(qdev, rx_ring);
 997 }
 998
 999 /* Unmaps tx buffers.  Can be called from send() if a pci mapping
1000  * fails at some stage, or from the interrupt when a tx completes.
1001  */
1002 static void ql_unmap_send(struct ql_adapter *qdev,
1003                           struct tx_ring_desc *tx_ring_desc, int mapped)
1004 {
1005         int i;
1006         for (i = 0; i < mapped; i++) {
1007                 if (i == 0 || (i == 7 && mapped > 7)) {
1008                         /*
1009                          * Unmap the skb->data area, or the
1010                          * external sglist (AKA the Outbound
1011                          * Address List (OAL)).
1012                          * If its the zeroeth element, then it's
1013                          * the skb->data area.  If it's the 7th
1014                          * element and there is more than 6 frags,
1015                          * then its an OAL.
1016                          */
1017                         if (i == 7) {
1018                                 QPRINTK(qdev, TX_DONE, DEBUG,
1019                                         "unmapping OAL area.\n");
1020                         }
1021                         pci_unmap_single(qdev->pdev,
1022                                          pci_unmap_addr(&tx_ring_desc->map[i],
1023                                                         mapaddr),
1024                                          pci_unmap_len(&tx_ring_desc->map[i],
1025                                                        maplen),
1026                                          PCI_DMA_TODEVICE);
1027                 } else {
1028                         QPRINTK(qdev, TX_DONE, DEBUG, "unmapping frag %d.\n",
1029                                 i);
1030                         pci_unmap_page(qdev->pdev,
1031                                        pci_unmap_addr(&tx_ring_desc->map[i],
1032                                                       mapaddr),
1033                                        pci_unmap_len(&tx_ring_desc->map[i],
1034                                                      maplen), PCI_DMA_TODEVICE);
1035                 }
1036         }
1037
1038 }
1039
1040 /* Map the buffers for this transmit.  This will return
1041  * NETDEV_TX_BUSY or NETDEV_TX_OK based on success.
1042  */
1043 static int ql_map_send(struct ql_adapter *qdev,
1044                        struct ob_mac_iocb_req *mac_iocb_ptr,
1045                        struct sk_buff *skb, struct tx_ring_desc *tx_ring_desc)
1046 {
1047         int len = skb_headlen(skb);
1048         dma_addr_t map;
1049         int frag_idx, err, map_idx = 0;
1050         struct tx_buf_desc *tbd = mac_iocb_ptr->tbd;
1051         int frag_cnt = skb_shinfo(skb)->nr_frags;
1052
1053         if (frag_cnt) {
1054                 QPRINTK(qdev, TX_QUEUED, DEBUG, "frag_cnt = %d.\n", frag_cnt);
1055         }
1056         /*
1057          * Map the skb buffer first.
1058          */
1059         map = pci_map_single(qdev->pdev, skb->data, len, PCI_DMA_TODEVICE);
1060
1061         err = pci_dma_mapping_error(qdev->pdev, map);
1062         if (err) {
1063                 QPRINTK(qdev, TX_QUEUED, ERR,
1064                         "PCI mapping failed with error: %d\n", err);
1065
1066                 return NETDEV_TX_BUSY;
1067         }
1068
1069         tbd->len = cpu_to_le32(len);
1070         tbd->addr = cpu_to_le64(map);
1071         pci_unmap_addr_set(&tx_ring_desc->map[map_idx], mapaddr, map);
1072         pci_unmap_len_set(&tx_ring_desc->map[map_idx], maplen, len);
1073         map_idx++;
1074
1075         /*
1076          * This loop fills the remainder of the 8 address descriptors
1077          * in the IOCB.  If there are more than 7 fragments, then the
1078          * eighth address desc will point to an external list (OAL).
1079          * When this happens, the remainder of the frags will be stored
1080          * in this list.
1081          */
1082         for (frag_idx = 0; frag_idx < frag_cnt; frag_idx++, map_idx++) {
1083                 skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_idx];
1084                 tbd++;
1085                 if (frag_idx == 6 && frag_cnt > 7) {
1086                         /* Let's tack on an sglist.
1087                          * Our control block will now
1088                          * look like this:
1089                          * iocb->seg[0] = skb->data
1090                          * iocb->seg[1] = frag[0]
1091                          * iocb->seg[2] = frag[1]
1092                          * iocb->seg[3] = frag[2]
1093                          * iocb->seg[4] = frag[3]
1094                          * iocb->seg[5] = frag[4]
1095                          * iocb->seg[6] = frag[5]
1096                          * iocb->seg[7] = ptr to OAL (external sglist)
1097                          * oal->seg[0] = frag[6]
1098                          * oal->seg[1] = frag[7]
1099                          * oal->seg[2] = frag[8]
1100                          * oal->seg[3] = frag[9]
1101                          * oal->seg[4] = frag[10]
1102                          *      etc...
1103                          */
1104                         /* Tack on the OAL in the eighth segment of IOCB. */
1105                         map = pci_map_single(qdev->pdev, &tx_ring_desc->oal,
1106                                              sizeof(struct oal),
1107                                              PCI_DMA_TODEVICE);
1108                         err = pci_dma_mapping_error(qdev->pdev, map);
1109                         if (err) {
1110                                 QPRINTK(qdev, TX_QUEUED, ERR,
1111                                         "PCI mapping outbound address list with error: %d\n",
1112                                         err);
1113                                 goto map_error;
1114                         }
1115
1116                         tbd->addr = cpu_to_le64(map);
1117                         /*
1118                          * The length is the number of fragments
1119                          * that remain to be mapped times the length
1120                          * of our sglist (OAL).
1121                          */
1122                         tbd->len =
1123                             cpu_to_le32((sizeof(struct tx_buf_desc) *
1124                                          (frag_cnt - frag_idx)) | TX_DESC_C);
1125                         pci_unmap_addr_set(&tx_ring_desc->map[map_idx], mapaddr,
1126                                            map);
1127                         pci_unmap_len_set(&tx_ring_desc->map[map_idx], maplen,
1128                                           sizeof(struct oal));
1129                         tbd = (struct tx_buf_desc *)&tx_ring_desc->oal;
1130                         map_idx++;
1131                 }
1132
1133                 map =
1134                     pci_map_page(qdev->pdev, frag->page,
1135                                  frag->page_offset, frag->size,
1136                                  PCI_DMA_TODEVICE);
1137
1138                 err = pci_dma_mapping_error(qdev->pdev, map);
1139                 if (err) {
1140                         QPRINTK(qdev, TX_QUEUED, ERR,
1141                                 "PCI mapping frags failed with error: %d.\n",
1142                                 err);
1143                         goto map_error;
1144                 }
1145
1146                 tbd->addr = cpu_to_le64(map);
1147                 tbd->len = cpu_to_le32(frag->size);
1148                 pci_unmap_addr_set(&tx_ring_desc->map[map_idx], mapaddr, map);
1149                 pci_unmap_len_set(&tx_ring_desc->map[map_idx], maplen,
1150                                   frag->size);
1151
1152         }
1153         /* Save the number of segments we've mapped. */
1154         tx_ring_desc->map_cnt = map_idx;
1155         /* Terminate the last segment. */
1156         tbd->len = cpu_to_le32(le32_to_cpu(tbd->len) | TX_DESC_E);
1157         return NETDEV_TX_OK;
1158
1159 map_error:
1160         /*
1161          * If the first frag mapping failed, then i will be zero.
1162          * This causes the unmap of the skb->data area.  Otherwise
1163          * we pass in the number of frags that mapped successfully
1164          * so they can be umapped.
1165          */
1166         ql_unmap_send(qdev, tx_ring_desc, map_idx);
1167         return NETDEV_TX_BUSY;
1168 }
1169
1170 static void ql_realign_skb(struct sk_buff *skb, int len)
1171 {
1172         void *temp_addr = skb->data;
1173
1174         /* Undo the skb_reserve(skb,32) we did before
1175          * giving to hardware, and realign data on
1176          * a 2-byte boundary.
1177          */
1178         skb->data -= QLGE_SB_PAD - NET_IP_ALIGN;
1179         skb->tail -= QLGE_SB_PAD - NET_IP_ALIGN;
1180         skb_copy_to_linear_data(skb, temp_addr,
1181                 (unsigned int)len);
1182 }
1183
1184 /*
1185  * This function builds an skb for the given inbound
1186  * completion.  It will be rewritten for readability in the near
1187  * future, but for not it works well.
1188  */
1189 static struct sk_buff *ql_build_rx_skb(struct ql_adapter *qdev,
1190                                        struct rx_ring *rx_ring,
1191                                        struct ib_mac_iocb_rsp *ib_mac_rsp)
1192 {
1193         struct bq_desc *lbq_desc;
1194         struct bq_desc *sbq_desc;
1195         struct sk_buff *skb = NULL;
1196         u32 length = le32_to_cpu(ib_mac_rsp->data_len);
1197        u32 hdr_len = le32_to_cpu(ib_mac_rsp->hdr_len);
1198
1199         /*
1200          * Handle the header buffer if present.
1201          */
1202         if (ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HV &&
1203             ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS) {
1204                 QPRINTK(qdev, RX_STATUS, DEBUG, "Header of %d bytes in small buffer.\n", hdr_len);
1205                 /*
1206                  * Headers fit nicely into a small buffer.
1207                  */
1208                 sbq_desc = ql_get_curr_sbuf(rx_ring);
1209                 pci_unmap_single(qdev->pdev,
1210                                 pci_unmap_addr(sbq_desc, mapaddr),
1211                                 pci_unmap_len(sbq_desc, maplen),
1212                                 PCI_DMA_FROMDEVICE);
1213                 skb = sbq_desc->p.skb;
1214                 ql_realign_skb(skb, hdr_len);
1215                 skb_put(skb, hdr_len);
1216                 sbq_desc->p.skb = NULL;
1217         }
1218
1219         /*
1220          * Handle the data buffer(s).
1221          */
1222         if (unlikely(!length)) {        /* Is there data too? */
1223                 QPRINTK(qdev, RX_STATUS, DEBUG,
1224                         "No Data buffer in this packet.\n");
1225                 return skb;
1226         }
1227
1228         if (ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_DS) {
1229                 if (ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS) {
1230                         QPRINTK(qdev, RX_STATUS, DEBUG,
1231                                 "Headers in small, data of %d bytes in small, combine them.\n", length);
1232                         /*
1233                          * Data is less than small buffer size so it's
1234                          * stuffed in a small buffer.
1235                          * For this case we append the data
1236                          * from the "data" small buffer to the "header" small
1237                          * buffer.
1238                          */
1239                         sbq_desc = ql_get_curr_sbuf(rx_ring);
1240                         pci_dma_sync_single_for_cpu(qdev->pdev,
1241                                                     pci_unmap_addr
1242                                                     (sbq_desc, mapaddr),
1243                                                     pci_unmap_len
1244                                                     (sbq_desc, maplen),
1245                                                     PCI_DMA_FROMDEVICE);
1246                         memcpy(skb_put(skb, length),
1247                                sbq_desc->p.skb->data, length);
1248                         pci_dma_sync_single_for_device(qdev->pdev,
1249                                                        pci_unmap_addr
1250                                                        (sbq_desc,
1251                                                         mapaddr),
1252                                                        pci_unmap_len
1253                                                        (sbq_desc,
1254                                                         maplen),
1255                                                        PCI_DMA_FROMDEVICE);
1256                 } else {
1257                         QPRINTK(qdev, RX_STATUS, DEBUG,
1258                                 "%d bytes in a single small buffer.\n", length);
1259                         sbq_desc = ql_get_curr_sbuf(rx_ring);
1260                         skb = sbq_desc->p.skb;
1261                         ql_realign_skb(skb, length);
1262                         skb_put(skb, length);
1263                         pci_unmap_single(qdev->pdev,
1264                                          pci_unmap_addr(sbq_desc,
1265                                                         mapaddr),
1266                                          pci_unmap_len(sbq_desc,
1267                                                        maplen),
1268                                          PCI_DMA_FROMDEVICE);
1269                         sbq_desc->p.skb = NULL;
1270                 }
1271         } else if (ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_DL) {
1272                 if (ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS) {
1273                         QPRINTK(qdev, RX_STATUS, DEBUG,
1274                                 "Header in small, %d bytes in large. Chain large to small!\n", length);
1275                         /*
1276                          * The data is in a single large buffer.  We
1277                          * chain it to the header buffer's skb and let
1278                          * it rip.
1279                          */
1280                         lbq_desc = ql_get_curr_lbuf(rx_ring);
1281                         pci_unmap_page(qdev->pdev,
1282                                        pci_unmap_addr(lbq_desc,
1283                                                       mapaddr),
1284                                        pci_unmap_len(lbq_desc, maplen),
1285                                        PCI_DMA_FROMDEVICE);
1286                         QPRINTK(qdev, RX_STATUS, DEBUG,
1287                                 "Chaining page to skb.\n");
1288                         skb_fill_page_desc(skb, 0, lbq_desc->p.lbq_page,
1289                                            0, length);
1290                         skb->len += length;
1291                         skb->data_len += length;
1292                         skb->truesize += length;
1293                         lbq_desc->p.lbq_page = NULL;
1294                 } else {
1295                         /*
1296                          * The headers and data are in a single large buffer. We
1297                          * copy it to a new skb and let it go. This can happen with
1298                          * jumbo mtu on a non-TCP/UDP frame.
1299                          */
1300                         lbq_desc = ql_get_curr_lbuf(rx_ring);
1301                         skb = netdev_alloc_skb(qdev->ndev, length);
1302                         if (skb == NULL) {
1303                                 QPRINTK(qdev, PROBE, DEBUG,
1304                                         "No skb available, drop the packet.\n");
1305                                 return NULL;
1306                         }
1307                         pci_unmap_page(qdev->pdev,
1308                                        pci_unmap_addr(lbq_desc,
1309                                                       mapaddr),
1310                                        pci_unmap_len(lbq_desc, maplen),
1311                                        PCI_DMA_FROMDEVICE);
1312                         skb_reserve(skb, NET_IP_ALIGN);
1313                         QPRINTK(qdev, RX_STATUS, DEBUG,
1314                                 "%d bytes of headers and data in large. Chain page to new skb and pull tail.\n", length);
1315                         skb_fill_page_desc(skb, 0, lbq_desc->p.lbq_page,
1316                                            0, length);
1317                         skb->len += length;
1318                         skb->data_len += length;
1319                         skb->truesize += length;
1320                         length -= length;
1321                         lbq_desc->p.lbq_page = NULL;
1322                         __pskb_pull_tail(skb,
1323                                 (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V) ?
1324                                 VLAN_ETH_HLEN : ETH_HLEN);
1325                 }
1326         } else {
1327                 /*
1328                  * The data is in a chain of large buffers
1329                  * pointed to by a small buffer.  We loop
1330                  * thru and chain them to the our small header
1331                  * buffer's skb.
1332                  * frags:  There are 18 max frags and our small
1333                  *         buffer will hold 32 of them. The thing is,
1334                  *         we'll use 3 max for our 9000 byte jumbo
1335                  *         frames.  If the MTU goes up we could
1336                  *          eventually be in trouble.
1337                  */
1338                 int size, offset, i = 0;
1339                 __le64 *bq, bq_array[8];
1340                 sbq_desc = ql_get_curr_sbuf(rx_ring);
1341                 pci_unmap_single(qdev->pdev,
1342                                  pci_unmap_addr(sbq_desc, mapaddr),
1343                                  pci_unmap_len(sbq_desc, maplen),
1344                                  PCI_DMA_FROMDEVICE);
1345                 if (!(ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HS)) {
1346                         /*
1347                          * This is an non TCP/UDP IP frame, so
1348                          * the headers aren't split into a small
1349                          * buffer.  We have to use the small buffer
1350                          * that contains our sg list as our skb to
1351                          * send upstairs. Copy the sg list here to
1352                          * a local buffer and use it to find the
1353                          * pages to chain.
1354                          */
1355                         QPRINTK(qdev, RX_STATUS, DEBUG,
1356                                 "%d bytes of headers & data in chain of large.\n", length);
1357                         skb = sbq_desc->p.skb;
1358                         bq = &bq_array[0];
1359                         memcpy(bq, skb->data, sizeof(bq_array));
1360                         sbq_desc->p.skb = NULL;
1361                         skb_reserve(skb, NET_IP_ALIGN);
1362                 } else {
1363                         QPRINTK(qdev, RX_STATUS, DEBUG,
1364                                 "Headers in small, %d bytes of data in chain of large.\n", length);
1365                         bq = (__le64 *)sbq_desc->p.skb->data;
1366                 }
1367                 while (length > 0) {
1368                         lbq_desc = ql_get_curr_lbuf(rx_ring);
1369                         pci_unmap_page(qdev->pdev,
1370                                        pci_unmap_addr(lbq_desc,
1371                                                       mapaddr),
1372                                        pci_unmap_len(lbq_desc,
1373                                                      maplen),
1374                                        PCI_DMA_FROMDEVICE);
1375                         size = (length < PAGE_SIZE) ? length : PAGE_SIZE;
1376                         offset = 0;
1377
1378                         QPRINTK(qdev, RX_STATUS, DEBUG,
1379                                 "Adding page %d to skb for %d bytes.\n",
1380                                 i, size);
1381                         skb_fill_page_desc(skb, i, lbq_desc->p.lbq_page,
1382                                            offset, size);
1383                         skb->len += size;
1384                         skb->data_len += size;
1385                         skb->truesize += size;
1386                         length -= size;
1387                         lbq_desc->p.lbq_page = NULL;
1388                         bq++;
1389                         i++;
1390                 }
1391                 __pskb_pull_tail(skb, (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V) ?
1392                                 VLAN_ETH_HLEN : ETH_HLEN);
1393         }
1394         return skb;
1395 }
1396
1397 /* Process an inbound completion from an rx ring. */
1398 static void ql_process_mac_rx_intr(struct ql_adapter *qdev,
1399                                    struct rx_ring *rx_ring,
1400                                    struct ib_mac_iocb_rsp *ib_mac_rsp)
1401 {
1402         struct net_device *ndev = qdev->ndev;
1403         struct sk_buff *skb = NULL;
1404
1405         QL_DUMP_IB_MAC_RSP(ib_mac_rsp);
1406
1407         skb = ql_build_rx_skb(qdev, rx_ring, ib_mac_rsp);
1408         if (unlikely(!skb)) {
1409                 QPRINTK(qdev, RX_STATUS, DEBUG,
1410                         "No skb available, drop packet.\n");
1411                 return;
1412         }
1413
1414         prefetch(skb->data);
1415         skb->dev = ndev;
1416         if (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) {
1417                 QPRINTK(qdev, RX_STATUS, DEBUG, "%s%s%s Multicast.\n",
1418                         (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
1419                         IB_MAC_IOCB_RSP_M_HASH ? "Hash" : "",
1420                         (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
1421                         IB_MAC_IOCB_RSP_M_REG ? "Registered" : "",
1422                         (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
1423                         IB_MAC_IOCB_RSP_M_PROM ? "Promiscuous" : "");
1424         }
1425         if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_P) {
1426                 QPRINTK(qdev, RX_STATUS, DEBUG, "Promiscuous Packet.\n");
1427         }
1428         if (ib_mac_rsp->flags1 & (IB_MAC_IOCB_RSP_IE | IB_MAC_IOCB_RSP_TE)) {
1429                 QPRINTK(qdev, RX_STATUS, ERR,
1430                         "Bad checksum for this %s packet.\n",
1431                         ((ib_mac_rsp->
1432                           flags2 & IB_MAC_IOCB_RSP_T) ? "TCP" : "UDP"));
1433                 skb->ip_summed = CHECKSUM_NONE;
1434         } else if (qdev->rx_csum &&
1435                    ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_T) ||
1436                     ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_U) &&
1437                      !(ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_NU)))) {
1438                 QPRINTK(qdev, RX_STATUS, DEBUG, "RX checksum done!\n");
1439                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1440         }
1441         qdev->stats.rx_packets++;
1442         qdev->stats.rx_bytes += skb->len;
1443         skb->protocol = eth_type_trans(skb, ndev);
1444         skb_record_rx_queue(skb, rx_ring - &qdev->rx_ring[0]);
1445         if (qdev->vlgrp && (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V)) {
1446                 QPRINTK(qdev, RX_STATUS, DEBUG,
1447                         "Passing a VLAN packet upstream.\n");
1448                 vlan_hwaccel_receive_skb(skb, qdev->vlgrp,
1449                                 le16_to_cpu(ib_mac_rsp->vlan_id));
1450         } else {
1451                 QPRINTK(qdev, RX_STATUS, DEBUG,
1452                         "Passing a normal packet upstream.\n");
1453                 netif_receive_skb(skb);
1454         }
1455 }
1456
1457 /* Process an outbound completion from an rx ring. */
1458 static void ql_process_mac_tx_intr(struct ql_adapter *qdev,
1459                                    struct ob_mac_iocb_rsp *mac_rsp)
1460 {
1461         struct tx_ring *tx_ring;
1462         struct tx_ring_desc *tx_ring_desc;
1463
1464         QL_DUMP_OB_MAC_RSP(mac_rsp);
1465         tx_ring = &qdev->tx_ring[mac_rsp->txq_idx];
1466         tx_ring_desc = &tx_ring->q[mac_rsp->tid];
1467         ql_unmap_send(qdev, tx_ring_desc, tx_ring_desc->map_cnt);
1468         qdev->stats.tx_bytes += tx_ring_desc->map_cnt;
1469         qdev->stats.tx_packets++;
1470         dev_kfree_skb(tx_ring_desc->skb);
1471         tx_ring_desc->skb = NULL;
1472
1473         if (unlikely(mac_rsp->flags1 & (OB_MAC_IOCB_RSP_E |
1474                                         OB_MAC_IOCB_RSP_S |
1475                                         OB_MAC_IOCB_RSP_L |
1476                                         OB_MAC_IOCB_RSP_P | OB_MAC_IOCB_RSP_B))) {
1477                 if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_E) {
1478                         QPRINTK(qdev, TX_DONE, WARNING,
1479                                 "Total descriptor length did not match transfer length.\n");
1480                 }
1481                 if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_S) {
1482                         QPRINTK(qdev, TX_DONE, WARNING,
1483                                 "Frame too short to be legal, not sent.\n");
1484                 }
1485                 if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_L) {
1486                         QPRINTK(qdev, TX_DONE, WARNING,
1487                                 "Frame too long, but sent anyway.\n");
1488                 }
1489                 if (mac_rsp->flags1 & OB_MAC_IOCB_RSP_B) {
1490                         QPRINTK(qdev, TX_DONE, WARNING,
1491                                 "PCI backplane error. Frame not sent.\n");
1492                 }
1493         }
1494         atomic_inc(&tx_ring->tx_count);
1495 }
1496
1497 /* Fire up a handler to reset the MPI processor. */
1498 void ql_queue_fw_error(struct ql_adapter *qdev)
1499 {
1500         netif_stop_queue(qdev->ndev);
1501         netif_carrier_off(qdev->ndev);
1502         queue_delayed_work(qdev->workqueue, &qdev->mpi_reset_work, 0);
1503 }
1504
1505 void ql_queue_asic_error(struct ql_adapter *qdev)
1506 {
1507         netif_stop_queue(qdev->ndev);
1508         netif_carrier_off(qdev->ndev);
1509         ql_disable_interrupts(qdev);
1510         /* Clear adapter up bit to signal the recovery
1511          * process that it shouldn't kill the reset worker
1512          * thread
1513          */
1514         clear_bit(QL_ADAPTER_UP, &qdev->flags);
1515         queue_delayed_work(qdev->workqueue, &qdev->asic_reset_work, 0);
1516 }
1517
1518 static void ql_process_chip_ae_intr(struct ql_adapter *qdev,
1519                                     struct ib_ae_iocb_rsp *ib_ae_rsp)
1520 {
1521         switch (ib_ae_rsp->event) {
1522         case MGMT_ERR_EVENT:
1523                 QPRINTK(qdev, RX_ERR, ERR,
1524                         "Management Processor Fatal Error.\n");
1525                 ql_queue_fw_error(qdev);
1526                 return;
1527
1528         case CAM_LOOKUP_ERR_EVENT:
1529                 QPRINTK(qdev, LINK, ERR,
1530                         "Multiple CAM hits lookup occurred.\n");
1531                 QPRINTK(qdev, DRV, ERR, "This event shouldn't occur.\n");
1532                 ql_queue_asic_error(qdev);
1533                 return;
1534
1535         case SOFT_ECC_ERROR_EVENT:
1536                 QPRINTK(qdev, RX_ERR, ERR, "Soft ECC error detected.\n");
1537                 ql_queue_asic_error(qdev);
1538                 break;
1539
1540         case PCI_ERR_ANON_BUF_RD:
1541                 QPRINTK(qdev, RX_ERR, ERR,
1542                         "PCI error occurred when reading anonymous buffers from rx_ring %d.\n",
1543                         ib_ae_rsp->q_id);
1544                 ql_queue_asic_error(qdev);
1545                 break;
1546
1547         default:
1548                 QPRINTK(qdev, DRV, ERR, "Unexpected event %d.\n",
1549                         ib_ae_rsp->event);
1550                 ql_queue_asic_error(qdev);
1551                 break;
1552         }
1553 }
1554
1555 static int ql_clean_outbound_rx_ring(struct rx_ring *rx_ring)
1556 {
1557         struct ql_adapter *qdev = rx_ring->qdev;
1558         u32 prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
1559         struct ob_mac_iocb_rsp *net_rsp = NULL;
1560         int count = 0;
1561
1562         /* While there are entries in the completion queue. */
1563         while (prod != rx_ring->cnsmr_idx) {
1564
1565                 QPRINTK(qdev, RX_STATUS, DEBUG,
1566                         "cq_id = %d, prod = %d, cnsmr = %d.\n.", rx_ring->cq_id,
1567                         prod, rx_ring->cnsmr_idx);
1568
1569                 net_rsp = (struct ob_mac_iocb_rsp *)rx_ring->curr_entry;
1570                 rmb();
1571                 switch (net_rsp->opcode) {
1572
1573                 case OPCODE_OB_MAC_TSO_IOCB:
1574                 case OPCODE_OB_MAC_IOCB:
1575                         ql_process_mac_tx_intr(qdev, net_rsp);
1576                         break;
1577                 default:
1578                         QPRINTK(qdev, RX_STATUS, DEBUG,
1579                                 "Hit default case, not handled! dropping the packet, opcode = %x.\n",
1580                                 net_rsp->opcode);
1581                 }
1582                 count++;
1583                 ql_update_cq(rx_ring);
1584                 prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
1585         }
1586         ql_write_cq_idx(rx_ring);
1587         if (netif_queue_stopped(qdev->ndev) && net_rsp != NULL) {
1588                 struct tx_ring *tx_ring = &qdev->tx_ring[net_rsp->txq_idx];
1589                 if (atomic_read(&tx_ring->queue_stopped) &&
1590                     (atomic_read(&tx_ring->tx_count) > (tx_ring->wq_len / 4)))
1591                         /*
1592                          * The queue got stopped because the tx_ring was full.
1593                          * Wake it up, because it's now at least 25% empty.
1594                          */
1595                         netif_wake_queue(qdev->ndev);
1596         }
1597
1598         return count;
1599 }
1600
1601 static int ql_clean_inbound_rx_ring(struct rx_ring *rx_ring, int budget)
1602 {
1603         struct ql_adapter *qdev = rx_ring->qdev;
1604         u32 prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
1605         struct ql_net_rsp_iocb *net_rsp;
1606         int count = 0;
1607
1608         /* While there are entries in the completion queue. */
1609         while (prod != rx_ring->cnsmr_idx) {
1610
1611                 QPRINTK(qdev, RX_STATUS, DEBUG,
1612                         "cq_id = %d, prod = %d, cnsmr = %d.\n.", rx_ring->cq_id,
1613                         prod, rx_ring->cnsmr_idx);
1614
1615                 net_rsp = rx_ring->curr_entry;
1616                 rmb();
1617                 switch (net_rsp->opcode) {
1618                 case OPCODE_IB_MAC_IOCB:
1619                         ql_process_mac_rx_intr(qdev, rx_ring,
1620                                                (struct ib_mac_iocb_rsp *)
1621                                                net_rsp);
1622                         break;
1623
1624                 case OPCODE_IB_AE_IOCB:
1625                         ql_process_chip_ae_intr(qdev, (struct ib_ae_iocb_rsp *)
1626                                                 net_rsp);
1627                         break;
1628                 default:
1629                         {
1630                                 QPRINTK(qdev, RX_STATUS, DEBUG,
1631                                         "Hit default case, not handled! dropping the packet, opcode = %x.\n",
1632                                         net_rsp->opcode);
1633                         }
1634                 }
1635                 count++;
1636                 ql_update_cq(rx_ring);
1637                 prod = ql_read_sh_reg(rx_ring->prod_idx_sh_reg);
1638                 if (count == budget)
1639                         break;
1640         }
1641         ql_update_buffer_queues(qdev, rx_ring);
1642         ql_write_cq_idx(rx_ring);
1643         return count;
1644 }
1645
1646 static int ql_napi_poll_msix(struct napi_struct *napi, int budget)
1647 {
1648         struct rx_ring *rx_ring = container_of(napi, struct rx_ring, napi);
1649         struct ql_adapter *qdev = rx_ring->qdev;
1650         int work_done = ql_clean_inbound_rx_ring(rx_ring, budget);
1651
1652         QPRINTK(qdev, RX_STATUS, DEBUG, "Enter, NAPI POLL cq_id = %d.\n",
1653                 rx_ring->cq_id);
1654
1655         if (work_done < budget) {
1656                 __napi_complete(napi);
1657                 ql_enable_completion_interrupt(qdev, rx_ring->irq);
1658         }
1659         return work_done;
1660 }
1661
1662 static void ql_vlan_rx_register(struct net_device *ndev, struct vlan_group *grp)
1663 {
1664         struct ql_adapter *qdev = netdev_priv(ndev);
1665
1666         qdev->vlgrp = grp;
1667         if (grp) {
1668                 QPRINTK(qdev, IFUP, DEBUG, "Turning on VLAN in NIC_RCV_CFG.\n");
1669                 ql_write32(qdev, NIC_RCV_CFG, NIC_RCV_CFG_VLAN_MASK |
1670                            NIC_RCV_CFG_VLAN_MATCH_AND_NON);
1671         } else {
1672                 QPRINTK(qdev, IFUP, DEBUG,
1673                         "Turning off VLAN in NIC_RCV_CFG.\n");
1674                 ql_write32(qdev, NIC_RCV_CFG, NIC_RCV_CFG_VLAN_MASK);
1675         }
1676 }
1677
1678 static void ql_vlan_rx_add_vid(struct net_device *ndev, u16 vid)
1679 {
1680         struct ql_adapter *qdev = netdev_priv(ndev);
1681         u32 enable_bit = MAC_ADDR_E;
1682         int status;
1683
1684         status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
1685         if (status)
1686                 return;
1687         spin_lock(&qdev->hw_lock);
1688         if (ql_set_mac_addr_reg
1689             (qdev, (u8 *) &enable_bit, MAC_ADDR_TYPE_VLAN, vid)) {
1690                 QPRINTK(qdev, IFUP, ERR, "Failed to init vlan address.\n");
1691         }
1692         spin_unlock(&qdev->hw_lock);
1693         ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
1694 }
1695
1696 static void ql_vlan_rx_kill_vid(struct net_device *ndev, u16 vid)
1697 {
1698         struct ql_adapter *qdev = netdev_priv(ndev);
1699         u32 enable_bit = 0;
1700         int status;
1701
1702         status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
1703         if (status)
1704                 return;
1705
1706         spin_lock(&qdev->hw_lock);
1707         if (ql_set_mac_addr_reg
1708             (qdev, (u8 *) &enable_bit, MAC_ADDR_TYPE_VLAN, vid)) {
1709                 QPRINTK(qdev, IFUP, ERR, "Failed to clear vlan address.\n");
1710         }
1711         spin_unlock(&qdev->hw_lock);
1712         ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
1713
1714 }
1715
1716 /* Worker thread to process a given rx_ring that is dedicated
1717  * to outbound completions.
1718  */
1719 static void ql_tx_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_outbound_rx_ring(rx_ring);
1724         ql_enable_completion_interrupt(rx_ring->qdev, rx_ring->irq);
1725
1726 }
1727
1728 /* Worker thread to process a given rx_ring that is dedicated
1729  * to inbound completions.
1730  */
1731 static void ql_rx_clean(struct work_struct *work)
1732 {
1733         struct rx_ring *rx_ring =
1734             container_of(work, struct rx_ring, rx_work.work);
1735         ql_clean_inbound_rx_ring(rx_ring, 64);
1736         ql_enable_completion_interrupt(rx_ring->qdev, rx_ring->irq);
1737 }
1738
1739 /* MSI-X Multiple Vector Interrupt Handler for outbound completions. */
1740 static irqreturn_t qlge_msix_tx_isr(int irq, void *dev_id)
1741 {
1742         struct rx_ring *rx_ring = dev_id;
1743         queue_delayed_work_on(rx_ring->cpu, rx_ring->qdev->q_workqueue,
1744                               &rx_ring->rx_work, 0);
1745         return IRQ_HANDLED;
1746 }
1747
1748 /* MSI-X Multiple Vector Interrupt Handler for inbound completions. */
1749 static irqreturn_t qlge_msix_rx_isr(int irq, void *dev_id)
1750 {
1751         struct rx_ring *rx_ring = dev_id;
1752         napi_schedule(&rx_ring->napi);
1753         return IRQ_HANDLED;
1754 }
1755
1756 /* This handles a fatal error, MPI activity, and the default
1757  * rx_ring in an MSI-X multiple vector environment.
1758  * In MSI/Legacy environment it also process the rest of
1759  * the rx_rings.
1760  */
1761 static irqreturn_t qlge_isr(int irq, void *dev_id)
1762 {
1763         struct rx_ring *rx_ring = dev_id;
1764         struct ql_adapter *qdev = rx_ring->qdev;
1765         struct intr_context *intr_context = &qdev->intr_context[0];
1766         u32 var;
1767         int i;
1768         int work_done = 0;
1769
1770         spin_lock(&qdev->hw_lock);
1771         if (atomic_read(&qdev->intr_context[0].irq_cnt)) {
1772                 QPRINTK(qdev, INTR, DEBUG, "Shared Interrupt, Not ours!\n");
1773                 spin_unlock(&qdev->hw_lock);
1774                 return IRQ_NONE;
1775         }
1776         spin_unlock(&qdev->hw_lock);
1777
1778         var = ql_disable_completion_interrupt(qdev, intr_context->intr);
1779
1780         /*
1781          * Check for fatal error.
1782          */
1783         if (var & STS_FE) {
1784                 ql_queue_asic_error(qdev);
1785                 QPRINTK(qdev, INTR, ERR, "Got fatal error, STS = %x.\n", var);
1786                 var = ql_read32(qdev, ERR_STS);
1787                 QPRINTK(qdev, INTR, ERR,
1788                         "Resetting chip. Error Status Register = 0x%x\n", var);
1789                 return IRQ_HANDLED;
1790         }
1791
1792         /*
1793          * Check MPI processor activity.
1794          */
1795         if (var & STS_PI) {
1796                 /*
1797                  * We've got an async event or mailbox completion.
1798                  * Handle it and clear the source of the interrupt.
1799                  */
1800                 QPRINTK(qdev, INTR, ERR, "Got MPI processor interrupt.\n");
1801                 ql_disable_completion_interrupt(qdev, intr_context->intr);
1802                 queue_delayed_work_on(smp_processor_id(), qdev->workqueue,
1803                                       &qdev->mpi_work, 0);
1804                 work_done++;
1805         }
1806
1807         /*
1808          * Check the default queue and wake handler if active.
1809          */
1810         rx_ring = &qdev->rx_ring[0];
1811         if (ql_read_sh_reg(rx_ring->prod_idx_sh_reg) != rx_ring->cnsmr_idx) {
1812                 QPRINTK(qdev, INTR, INFO, "Waking handler for rx_ring[0].\n");
1813                 ql_disable_completion_interrupt(qdev, intr_context->intr);
1814                 queue_delayed_work_on(smp_processor_id(), qdev->q_workqueue,
1815                                       &rx_ring->rx_work, 0);
1816                 work_done++;
1817         }
1818
1819         if (!test_bit(QL_MSIX_ENABLED, &qdev->flags)) {
1820                 /*
1821                  * Start the DPC for each active queue.
1822                  */
1823                 for (i = 1; i < qdev->rx_ring_count; i++) {
1824                         rx_ring = &qdev->rx_ring[i];
1825                         if (ql_read_sh_reg(rx_ring->prod_idx_sh_reg) !=
1826                             rx_ring->cnsmr_idx) {
1827                                 QPRINTK(qdev, INTR, INFO,
1828                                         "Waking handler for rx_ring[%d].\n", i);
1829                                 ql_disable_completion_interrupt(qdev,
1830                                                                 intr_context->
1831                                                                 intr);
1832                                 if (i < qdev->rss_ring_first_cq_id)
1833                                         queue_delayed_work_on(rx_ring->cpu,
1834                                                               qdev->q_workqueue,
1835                                                               &rx_ring->rx_work,
1836                                                               0);
1837                                 else
1838                                         napi_schedule(&rx_ring->napi);
1839                                 work_done++;
1840                         }
1841                 }
1842         }
1843         ql_enable_completion_interrupt(qdev, intr_context->intr);
1844         return work_done ? IRQ_HANDLED : IRQ_NONE;
1845 }
1846
1847 static int ql_tso(struct sk_buff *skb, struct ob_mac_tso_iocb_req *mac_iocb_ptr)
1848 {
1849
1850         if (skb_is_gso(skb)) {
1851                 int err;
1852                 if (skb_header_cloned(skb)) {
1853                         err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
1854                         if (err)
1855                                 return err;
1856                 }
1857
1858                 mac_iocb_ptr->opcode = OPCODE_OB_MAC_TSO_IOCB;
1859                 mac_iocb_ptr->flags3 |= OB_MAC_TSO_IOCB_IC;
1860                 mac_iocb_ptr->frame_len = cpu_to_le32((u32) skb->len);
1861                 mac_iocb_ptr->total_hdrs_len =
1862                     cpu_to_le16(skb_transport_offset(skb) + tcp_hdrlen(skb));
1863                 mac_iocb_ptr->net_trans_offset =
1864                     cpu_to_le16(skb_network_offset(skb) |
1865                                 skb_transport_offset(skb)
1866                                 << OB_MAC_TRANSPORT_HDR_SHIFT);
1867                 mac_iocb_ptr->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1868                 mac_iocb_ptr->flags2 |= OB_MAC_TSO_IOCB_LSO;
1869                 if (likely(skb->protocol == htons(ETH_P_IP))) {
1870                         struct iphdr *iph = ip_hdr(skb);
1871                         iph->check = 0;
1872                         mac_iocb_ptr->flags1 |= OB_MAC_TSO_IOCB_IP4;
1873                         tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
1874                                                                  iph->daddr, 0,
1875                                                                  IPPROTO_TCP,
1876                                                                  0);
1877                 } else if (skb->protocol == htons(ETH_P_IPV6)) {
1878                         mac_iocb_ptr->flags1 |= OB_MAC_TSO_IOCB_IP6;
1879                         tcp_hdr(skb)->check =
1880                             ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
1881                                              &ipv6_hdr(skb)->daddr,
1882                                              0, IPPROTO_TCP, 0);
1883                 }
1884                 return 1;
1885         }
1886         return 0;
1887 }
1888
1889 static void ql_hw_csum_setup(struct sk_buff *skb,
1890                              struct ob_mac_tso_iocb_req *mac_iocb_ptr)
1891 {
1892         int len;
1893         struct iphdr *iph = ip_hdr(skb);
1894         __sum16 *check;
1895         mac_iocb_ptr->opcode = OPCODE_OB_MAC_TSO_IOCB;
1896         mac_iocb_ptr->frame_len = cpu_to_le32((u32) skb->len);
1897         mac_iocb_ptr->net_trans_offset =
1898                 cpu_to_le16(skb_network_offset(skb) |
1899                 skb_transport_offset(skb) << OB_MAC_TRANSPORT_HDR_SHIFT);
1900
1901         mac_iocb_ptr->flags1 |= OB_MAC_TSO_IOCB_IP4;
1902         len = (ntohs(iph->tot_len) - (iph->ihl << 2));
1903         if (likely(iph->protocol == IPPROTO_TCP)) {
1904                 check = &(tcp_hdr(skb)->check);
1905                 mac_iocb_ptr->flags2 |= OB_MAC_TSO_IOCB_TC;
1906                 mac_iocb_ptr->total_hdrs_len =
1907                     cpu_to_le16(skb_transport_offset(skb) +
1908                                 (tcp_hdr(skb)->doff << 2));
1909         } else {
1910                 check = &(udp_hdr(skb)->check);
1911                 mac_iocb_ptr->flags2 |= OB_MAC_TSO_IOCB_UC;
1912                 mac_iocb_ptr->total_hdrs_len =
1913                     cpu_to_le16(skb_transport_offset(skb) +
1914                                 sizeof(struct udphdr));
1915         }
1916         *check = ~csum_tcpudp_magic(iph->saddr,
1917                                     iph->daddr, len, iph->protocol, 0);
1918 }
1919
1920 static int qlge_send(struct sk_buff *skb, struct net_device *ndev)
1921 {
1922         struct tx_ring_desc *tx_ring_desc;
1923         struct ob_mac_iocb_req *mac_iocb_ptr;
1924         struct ql_adapter *qdev = netdev_priv(ndev);
1925         int tso;
1926         struct tx_ring *tx_ring;
1927         u32 tx_ring_idx = (u32) QL_TXQ_IDX(qdev, skb);
1928
1929         tx_ring = &qdev->tx_ring[tx_ring_idx];
1930
1931         if (unlikely(atomic_read(&tx_ring->tx_count) < 2)) {
1932                 QPRINTK(qdev, TX_QUEUED, INFO,
1933                         "%s: shutting down tx queue %d du to lack of resources.\n",
1934                         __func__, tx_ring_idx);
1935                 netif_stop_queue(ndev);
1936                 atomic_inc(&tx_ring->queue_stopped);
1937                 return NETDEV_TX_BUSY;
1938         }
1939         tx_ring_desc = &tx_ring->q[tx_ring->prod_idx];
1940         mac_iocb_ptr = tx_ring_desc->queue_entry;
1941         memset((void *)mac_iocb_ptr, 0, sizeof(mac_iocb_ptr));
1942
1943         mac_iocb_ptr->opcode = OPCODE_OB_MAC_IOCB;
1944         mac_iocb_ptr->tid = tx_ring_desc->index;
1945         /* We use the upper 32-bits to store the tx queue for this IO.
1946          * When we get the completion we can use it to establish the context.
1947          */
1948         mac_iocb_ptr->txq_idx = tx_ring_idx;
1949         tx_ring_desc->skb = skb;
1950
1951         mac_iocb_ptr->frame_len = cpu_to_le16((u16) skb->len);
1952
1953         if (qdev->vlgrp && vlan_tx_tag_present(skb)) {
1954                 QPRINTK(qdev, TX_QUEUED, DEBUG, "Adding a vlan tag %d.\n",
1955                         vlan_tx_tag_get(skb));
1956                 mac_iocb_ptr->flags3 |= OB_MAC_IOCB_V;
1957                 mac_iocb_ptr->vlan_tci = cpu_to_le16(vlan_tx_tag_get(skb));
1958         }
1959         tso = ql_tso(skb, (struct ob_mac_tso_iocb_req *)mac_iocb_ptr);
1960         if (tso < 0) {
1961                 dev_kfree_skb_any(skb);
1962                 return NETDEV_TX_OK;
1963         } else if (unlikely(!tso) && (skb->ip_summed == CHECKSUM_PARTIAL)) {
1964                 ql_hw_csum_setup(skb,
1965                                  (struct ob_mac_tso_iocb_req *)mac_iocb_ptr);
1966         }
1967         if (ql_map_send(qdev, mac_iocb_ptr, skb, tx_ring_desc) !=
1968                         NETDEV_TX_OK) {
1969                 QPRINTK(qdev, TX_QUEUED, ERR,
1970                                 "Could not map the segments.\n");
1971                 return NETDEV_TX_BUSY;
1972         }
1973         QL_DUMP_OB_MAC_IOCB(mac_iocb_ptr);
1974         tx_ring->prod_idx++;
1975         if (tx_ring->prod_idx == tx_ring->wq_len)
1976                 tx_ring->prod_idx = 0;
1977         wmb();
1978
1979         ql_write_db_reg(tx_ring->prod_idx, tx_ring->prod_idx_db_reg);
1980         ndev->trans_start = jiffies;
1981         QPRINTK(qdev, TX_QUEUED, DEBUG, "tx queued, slot %d, len %d\n",
1982                 tx_ring->prod_idx, skb->len);
1983
1984         atomic_dec(&tx_ring->tx_count);
1985         return NETDEV_TX_OK;
1986 }
1987
1988 static void ql_free_shadow_space(struct ql_adapter *qdev)
1989 {
1990         if (qdev->rx_ring_shadow_reg_area) {
1991                 pci_free_consistent(qdev->pdev,
1992                                     PAGE_SIZE,
1993                                     qdev->rx_ring_shadow_reg_area,
1994                                     qdev->rx_ring_shadow_reg_dma);
1995                 qdev->rx_ring_shadow_reg_area = NULL;
1996         }
1997         if (qdev->tx_ring_shadow_reg_area) {
1998                 pci_free_consistent(qdev->pdev,
1999                                     PAGE_SIZE,
2000                                     qdev->tx_ring_shadow_reg_area,
2001                                     qdev->tx_ring_shadow_reg_dma);
2002                 qdev->tx_ring_shadow_reg_area = NULL;
2003         }
2004 }
2005
2006 static int ql_alloc_shadow_space(struct ql_adapter *qdev)
2007 {
2008         qdev->rx_ring_shadow_reg_area =
2009             pci_alloc_consistent(qdev->pdev,
2010                                  PAGE_SIZE, &qdev->rx_ring_shadow_reg_dma);
2011         if (qdev->rx_ring_shadow_reg_area == NULL) {
2012                 QPRINTK(qdev, IFUP, ERR,
2013                         "Allocation of RX shadow space failed.\n");
2014                 return -ENOMEM;
2015         }
2016         qdev->tx_ring_shadow_reg_area =
2017             pci_alloc_consistent(qdev->pdev, PAGE_SIZE,
2018                                  &qdev->tx_ring_shadow_reg_dma);
2019         if (qdev->tx_ring_shadow_reg_area == NULL) {
2020                 QPRINTK(qdev, IFUP, ERR,
2021                         "Allocation of TX shadow space failed.\n");
2022                 goto err_wqp_sh_area;
2023         }
2024         return 0;
2025
2026 err_wqp_sh_area:
2027         pci_free_consistent(qdev->pdev,
2028                             PAGE_SIZE,
2029                             qdev->rx_ring_shadow_reg_area,
2030                             qdev->rx_ring_shadow_reg_dma);
2031         return -ENOMEM;
2032 }
2033
2034 static void ql_init_tx_ring(struct ql_adapter *qdev, struct tx_ring *tx_ring)
2035 {
2036         struct tx_ring_desc *tx_ring_desc;
2037         int i;
2038         struct ob_mac_iocb_req *mac_iocb_ptr;
2039
2040         mac_iocb_ptr = tx_ring->wq_base;
2041         tx_ring_desc = tx_ring->q;
2042         for (i = 0; i < tx_ring->wq_len; i++) {
2043                 tx_ring_desc->index = i;
2044                 tx_ring_desc->skb = NULL;
2045                 tx_ring_desc->queue_entry = mac_iocb_ptr;
2046                 mac_iocb_ptr++;
2047                 tx_ring_desc++;
2048         }
2049         atomic_set(&tx_ring->tx_count, tx_ring->wq_len);
2050         atomic_set(&tx_ring->queue_stopped, 0);
2051 }
2052
2053 static void ql_free_tx_resources(struct ql_adapter *qdev,
2054                                  struct tx_ring *tx_ring)
2055 {
2056         if (tx_ring->wq_base) {
2057                 pci_free_consistent(qdev->pdev, tx_ring->wq_size,
2058                                     tx_ring->wq_base, tx_ring->wq_base_dma);
2059                 tx_ring->wq_base = NULL;
2060         }
2061         kfree(tx_ring->q);
2062         tx_ring->q = NULL;
2063 }
2064
2065 static int ql_alloc_tx_resources(struct ql_adapter *qdev,
2066                                  struct tx_ring *tx_ring)
2067 {
2068         tx_ring->wq_base =
2069             pci_alloc_consistent(qdev->pdev, tx_ring->wq_size,
2070                                  &tx_ring->wq_base_dma);
2071
2072         if ((tx_ring->wq_base == NULL)
2073             || tx_ring->wq_base_dma & (tx_ring->wq_size - 1)) {
2074                 QPRINTK(qdev, IFUP, ERR, "tx_ring alloc failed.\n");
2075                 return -ENOMEM;
2076         }
2077         tx_ring->q =
2078             kmalloc(tx_ring->wq_len * sizeof(struct tx_ring_desc), GFP_KERNEL);
2079         if (tx_ring->q == NULL)
2080                 goto err;
2081
2082         return 0;
2083 err:
2084         pci_free_consistent(qdev->pdev, tx_ring->wq_size,
2085                             tx_ring->wq_base, tx_ring->wq_base_dma);
2086         return -ENOMEM;
2087 }
2088
2089 static void ql_free_lbq_buffers(struct ql_adapter *qdev, struct rx_ring *rx_ring)
2090 {
2091         int i;
2092         struct bq_desc *lbq_desc;
2093
2094         for (i = 0; i < rx_ring->lbq_len; i++) {
2095                 lbq_desc = &rx_ring->lbq[i];
2096                 if (lbq_desc->p.lbq_page) {
2097                         pci_unmap_page(qdev->pdev,
2098                                        pci_unmap_addr(lbq_desc, mapaddr),
2099                                        pci_unmap_len(lbq_desc, maplen),
2100                                        PCI_DMA_FROMDEVICE);
2101
2102                         put_page(lbq_desc->p.lbq_page);
2103                         lbq_desc->p.lbq_page = NULL;
2104                 }
2105         }
2106 }
2107
2108 /*
2109  * Allocate and map a page for each element of the lbq.
2110  */
2111 static int ql_alloc_lbq_buffers(struct ql_adapter *qdev,
2112                                 struct rx_ring *rx_ring)
2113 {
2114         int i;
2115         struct bq_desc *lbq_desc;
2116         u64 map;
2117         __le64 *bq = rx_ring->lbq_base;
2118
2119         for (i = 0; i < rx_ring->lbq_len; i++) {
2120                 lbq_desc = &rx_ring->lbq[i];
2121                 memset(lbq_desc, 0, sizeof(lbq_desc));
2122                 lbq_desc->addr = bq;
2123                 lbq_desc->index = i;
2124                 lbq_desc->p.lbq_page = alloc_page(GFP_ATOMIC);
2125                 if (unlikely(!lbq_desc->p.lbq_page)) {
2126                         QPRINTK(qdev, IFUP, ERR, "failed alloc_page().\n");
2127                         goto mem_error;
2128                 } else {
2129                         map = pci_map_page(qdev->pdev,
2130                                            lbq_desc->p.lbq_page,
2131                                            0, PAGE_SIZE, PCI_DMA_FROMDEVICE);
2132                         if (pci_dma_mapping_error(qdev->pdev, map)) {
2133                                 QPRINTK(qdev, IFUP, ERR,
2134                                         "PCI mapping failed.\n");
2135                                 goto mem_error;
2136                         }
2137                         pci_unmap_addr_set(lbq_desc, mapaddr, map);
2138                         pci_unmap_len_set(lbq_desc, maplen, PAGE_SIZE);
2139                         *lbq_desc->addr = cpu_to_le64(map);
2140                 }
2141                 bq++;
2142         }
2143         return 0;
2144 mem_error:
2145         ql_free_lbq_buffers(qdev, rx_ring);
2146         return -ENOMEM;
2147 }
2148
2149 static void ql_free_sbq_buffers(struct ql_adapter *qdev, struct rx_ring *rx_ring)
2150 {
2151         int i;
2152         struct bq_desc *sbq_desc;
2153
2154         for (i = 0; i < rx_ring->sbq_len; i++) {
2155                 sbq_desc = &rx_ring->sbq[i];
2156                 if (sbq_desc == NULL) {
2157                         QPRINTK(qdev, IFUP, ERR, "sbq_desc %d is NULL.\n", i);
2158                         return;
2159                 }
2160                 if (sbq_desc->p.skb) {
2161                         pci_unmap_single(qdev->pdev,
2162                                          pci_unmap_addr(sbq_desc, mapaddr),
2163                                          pci_unmap_len(sbq_desc, maplen),
2164                                          PCI_DMA_FROMDEVICE);
2165                         dev_kfree_skb(sbq_desc->p.skb);
2166                         sbq_desc->p.skb = NULL;
2167                 }
2168         }
2169 }
2170
2171 /* Allocate and map an skb for each element of the sbq. */
2172 static int ql_alloc_sbq_buffers(struct ql_adapter *qdev,
2173                                 struct rx_ring *rx_ring)
2174 {
2175         int i;
2176         struct bq_desc *sbq_desc;
2177         struct sk_buff *skb;
2178         u64 map;
2179         __le64 *bq = rx_ring->sbq_base;
2180
2181         for (i = 0; i < rx_ring->sbq_len; i++) {
2182                 sbq_desc = &rx_ring->sbq[i];
2183                 memset(sbq_desc, 0, sizeof(sbq_desc));
2184                 sbq_desc->index = i;
2185                 sbq_desc->addr = bq;
2186                 skb = netdev_alloc_skb(qdev->ndev, rx_ring->sbq_buf_size);
2187                 if (unlikely(!skb)) {
2188                         /* Better luck next round */
2189                         QPRINTK(qdev, IFUP, ERR,
2190                                 "small buff alloc failed for %d bytes at index %d.\n",
2191                                 rx_ring->sbq_buf_size, i);
2192                         goto mem_err;
2193                 }
2194                 skb_reserve(skb, QLGE_SB_PAD);
2195                 sbq_desc->p.skb = skb;
2196                 /*
2197                  * Map only half the buffer. Because the
2198                  * other half may get some data copied to it
2199                  * when the completion arrives.
2200                  */
2201                 map = pci_map_single(qdev->pdev,
2202                                      skb->data,
2203                                      rx_ring->sbq_buf_size / 2,
2204                                      PCI_DMA_FROMDEVICE);
2205                 if (pci_dma_mapping_error(qdev->pdev, map)) {
2206                         QPRINTK(qdev, IFUP, ERR, "PCI mapping failed.\n");
2207                         goto mem_err;
2208                 }
2209                 pci_unmap_addr_set(sbq_desc, mapaddr, map);
2210                 pci_unmap_len_set(sbq_desc, maplen, rx_ring->sbq_buf_size / 2);
2211                 *sbq_desc->addr = cpu_to_le64(map);
2212                 bq++;
2213         }
2214         return 0;
2215 mem_err:
2216         ql_free_sbq_buffers(qdev, rx_ring);
2217         return -ENOMEM;
2218 }
2219
2220 static void ql_free_rx_resources(struct ql_adapter *qdev,
2221                                  struct rx_ring *rx_ring)
2222 {
2223         if (rx_ring->sbq_len)
2224                 ql_free_sbq_buffers(qdev, rx_ring);
2225         if (rx_ring->lbq_len)
2226                 ql_free_lbq_buffers(qdev, rx_ring);
2227
2228         /* Free the small buffer queue. */
2229         if (rx_ring->sbq_base) {
2230                 pci_free_consistent(qdev->pdev,
2231                                     rx_ring->sbq_size,
2232                                     rx_ring->sbq_base, rx_ring->sbq_base_dma);
2233                 rx_ring->sbq_base = NULL;
2234         }
2235
2236         /* Free the small buffer queue control blocks. */
2237         kfree(rx_ring->sbq);
2238         rx_ring->sbq = NULL;
2239
2240         /* Free the large buffer queue. */
2241         if (rx_ring->lbq_base) {
2242                 pci_free_consistent(qdev->pdev,
2243                                     rx_ring->lbq_size,
2244                                     rx_ring->lbq_base, rx_ring->lbq_base_dma);
2245                 rx_ring->lbq_base = NULL;
2246         }
2247
2248         /* Free the large buffer queue control blocks. */
2249         kfree(rx_ring->lbq);
2250         rx_ring->lbq = NULL;
2251
2252         /* Free the rx queue. */
2253         if (rx_ring->cq_base) {
2254                 pci_free_consistent(qdev->pdev,
2255                                     rx_ring->cq_size,
2256                                     rx_ring->cq_base, rx_ring->cq_base_dma);
2257                 rx_ring->cq_base = NULL;
2258         }
2259 }
2260
2261 /* Allocate queues and buffers for this completions queue based
2262  * on the values in the parameter structure. */
2263 static int ql_alloc_rx_resources(struct ql_adapter *qdev,
2264                                  struct rx_ring *rx_ring)
2265 {
2266
2267         /*
2268          * Allocate the completion queue for this rx_ring.
2269          */
2270         rx_ring->cq_base =
2271             pci_alloc_consistent(qdev->pdev, rx_ring->cq_size,
2272                                  &rx_ring->cq_base_dma);
2273
2274         if (rx_ring->cq_base == NULL) {
2275                 QPRINTK(qdev, IFUP, ERR, "rx_ring alloc failed.\n");
2276                 return -ENOMEM;
2277         }
2278
2279         if (rx_ring->sbq_len) {
2280                 /*
2281                  * Allocate small buffer queue.
2282                  */
2283                 rx_ring->sbq_base =
2284                     pci_alloc_consistent(qdev->pdev, rx_ring->sbq_size,
2285                                          &rx_ring->sbq_base_dma);
2286
2287                 if (rx_ring->sbq_base == NULL) {
2288                         QPRINTK(qdev, IFUP, ERR,
2289                                 "Small buffer queue allocation failed.\n");
2290                         goto err_mem;
2291                 }
2292
2293                 /*
2294                  * Allocate small buffer queue control blocks.
2295                  */
2296                 rx_ring->sbq =
2297                     kmalloc(rx_ring->sbq_len * sizeof(struct bq_desc),
2298                             GFP_KERNEL);
2299                 if (rx_ring->sbq == NULL) {
2300                         QPRINTK(qdev, IFUP, ERR,
2301                                 "Small buffer queue control block allocation failed.\n");
2302                         goto err_mem;
2303                 }
2304
2305                 if (ql_alloc_sbq_buffers(qdev, rx_ring)) {
2306                         QPRINTK(qdev, IFUP, ERR,
2307                                 "Small buffer allocation failed.\n");
2308                         goto err_mem;
2309                 }
2310         }
2311
2312         if (rx_ring->lbq_len) {
2313                 /*
2314                  * Allocate large buffer queue.
2315                  */
2316                 rx_ring->lbq_base =
2317                     pci_alloc_consistent(qdev->pdev, rx_ring->lbq_size,
2318                                          &rx_ring->lbq_base_dma);
2319
2320                 if (rx_ring->lbq_base == NULL) {
2321                         QPRINTK(qdev, IFUP, ERR,
2322                                 "Large buffer queue allocation failed.\n");
2323                         goto err_mem;
2324                 }
2325                 /*
2326                  * Allocate large buffer queue control blocks.
2327                  */
2328                 rx_ring->lbq =
2329                     kmalloc(rx_ring->lbq_len * sizeof(struct bq_desc),
2330                             GFP_KERNEL);
2331                 if (rx_ring->lbq == NULL) {
2332                         QPRINTK(qdev, IFUP, ERR,
2333                                 "Large buffer queue control block allocation failed.\n");
2334                         goto err_mem;
2335                 }
2336
2337                 /*
2338                  * Allocate the buffers.
2339                  */
2340                 if (ql_alloc_lbq_buffers(qdev, rx_ring)) {
2341                         QPRINTK(qdev, IFUP, ERR,
2342                                 "Large buffer allocation failed.\n");
2343                         goto err_mem;
2344                 }
2345         }
2346
2347         return 0;
2348
2349 err_mem:
2350         ql_free_rx_resources(qdev, rx_ring);
2351         return -ENOMEM;
2352 }
2353
2354 static void ql_tx_ring_clean(struct ql_adapter *qdev)
2355 {
2356         struct tx_ring *tx_ring;
2357         struct tx_ring_desc *tx_ring_desc;
2358         int i, j;
2359
2360         /*
2361          * Loop through all queues and free
2362          * any resources.
2363          */
2364         for (j = 0; j < qdev->tx_ring_count; j++) {
2365                 tx_ring = &qdev->tx_ring[j];
2366                 for (i = 0; i < tx_ring->wq_len; i++) {
2367                         tx_ring_desc = &tx_ring->q[i];
2368                         if (tx_ring_desc && tx_ring_desc->skb) {
2369                                 QPRINTK(qdev, IFDOWN, ERR,
2370                                 "Freeing lost SKB %p, from queue %d, index %d.\n",
2371                                         tx_ring_desc->skb, j,
2372                                         tx_ring_desc->index);
2373                                 ql_unmap_send(qdev, tx_ring_desc,
2374                                               tx_ring_desc->map_cnt);
2375                                 dev_kfree_skb(tx_ring_desc->skb);
2376                                 tx_ring_desc->skb = NULL;
2377                         }
2378                 }
2379         }
2380 }
2381
2382 static void ql_free_mem_resources(struct ql_adapter *qdev)
2383 {
2384         int i;
2385
2386         for (i = 0; i < qdev->tx_ring_count; i++)
2387                 ql_free_tx_resources(qdev, &qdev->tx_ring[i]);
2388         for (i = 0; i < qdev->rx_ring_count; i++)
2389                 ql_free_rx_resources(qdev, &qdev->rx_ring[i]);
2390         ql_free_shadow_space(qdev);
2391 }
2392
2393 static int ql_alloc_mem_resources(struct ql_adapter *qdev)
2394 {
2395         int i;
2396
2397         /* Allocate space for our shadow registers and such. */
2398         if (ql_alloc_shadow_space(qdev))
2399                 return -ENOMEM;
2400
2401         for (i = 0; i < qdev->rx_ring_count; i++) {
2402                 if (ql_alloc_rx_resources(qdev, &qdev->rx_ring[i]) != 0) {
2403                         QPRINTK(qdev, IFUP, ERR,
2404                                 "RX resource allocation failed.\n");
2405                         goto err_mem;
2406                 }
2407         }
2408         /* Allocate tx queue resources */
2409         for (i = 0; i < qdev->tx_ring_count; i++) {
2410                 if (ql_alloc_tx_resources(qdev, &qdev->tx_ring[i]) != 0) {
2411                         QPRINTK(qdev, IFUP, ERR,
2412                                 "TX resource allocation failed.\n");
2413                         goto err_mem;
2414                 }
2415         }
2416         return 0;
2417
2418 err_mem:
2419         ql_free_mem_resources(qdev);
2420         return -ENOMEM;
2421 }
2422
2423 /* Set up the rx ring control block and pass it to the chip.
2424  * The control block is defined as
2425  * "Completion Queue Initialization Control Block", or cqicb.
2426  */
2427 static int ql_start_rx_ring(struct ql_adapter *qdev, struct rx_ring *rx_ring)
2428 {
2429         struct cqicb *cqicb = &rx_ring->cqicb;
2430         void *shadow_reg = qdev->rx_ring_shadow_reg_area +
2431             (rx_ring->cq_id * sizeof(u64) * 4);
2432         u64 shadow_reg_dma = qdev->rx_ring_shadow_reg_dma +
2433             (rx_ring->cq_id * sizeof(u64) * 4);
2434         void __iomem *doorbell_area =
2435             qdev->doorbell_area + (DB_PAGE_SIZE * (128 + rx_ring->cq_id));
2436         int err = 0;
2437         u16 bq_len;
2438
2439         /* Set up the shadow registers for this ring. */
2440         rx_ring->prod_idx_sh_reg = shadow_reg;
2441         rx_ring->prod_idx_sh_reg_dma = shadow_reg_dma;
2442         shadow_reg += sizeof(u64);
2443         shadow_reg_dma += sizeof(u64);
2444         rx_ring->lbq_base_indirect = shadow_reg;
2445         rx_ring->lbq_base_indirect_dma = shadow_reg_dma;
2446         shadow_reg += sizeof(u64);
2447         shadow_reg_dma += sizeof(u64);
2448         rx_ring->sbq_base_indirect = shadow_reg;
2449         rx_ring->sbq_base_indirect_dma = shadow_reg_dma;
2450
2451         /* PCI doorbell mem area + 0x00 for consumer index register */
2452         rx_ring->cnsmr_idx_db_reg = (u32 __iomem *) doorbell_area;
2453         rx_ring->cnsmr_idx = 0;
2454         rx_ring->curr_entry = rx_ring->cq_base;
2455
2456         /* PCI doorbell mem area + 0x04 for valid register */
2457         rx_ring->valid_db_reg = doorbell_area + 0x04;
2458
2459         /* PCI doorbell mem area + 0x18 for large buffer consumer */
2460         rx_ring->lbq_prod_idx_db_reg = (u32 __iomem *) (doorbell_area + 0x18);
2461
2462         /* PCI doorbell mem area + 0x1c */
2463         rx_ring->sbq_prod_idx_db_reg = (u32 __iomem *) (doorbell_area + 0x1c);
2464
2465         memset((void *)cqicb, 0, sizeof(struct cqicb));
2466         cqicb->msix_vect = rx_ring->irq;
2467
2468         bq_len = (rx_ring->cq_len == 65536) ? 0 : (u16) rx_ring->cq_len;
2469         cqicb->len = cpu_to_le16(bq_len | LEN_V | LEN_CPP_CONT);
2470
2471         cqicb->addr = cpu_to_le64(rx_ring->cq_base_dma);
2472
2473         cqicb->prod_idx_addr = cpu_to_le64(rx_ring->prod_idx_sh_reg_dma);
2474
2475         /*
2476          * Set up the control block load flags.
2477          */
2478         cqicb->flags = FLAGS_LC |       /* Load queue base address */
2479             FLAGS_LV |          /* Load MSI-X vector */
2480             FLAGS_LI;           /* Load irq delay values */
2481         if (rx_ring->lbq_len) {
2482                 cqicb->flags |= FLAGS_LL;       /* Load lbq values */
2483                 *((u64 *) rx_ring->lbq_base_indirect) = rx_ring->lbq_base_dma;
2484                 cqicb->lbq_addr =
2485                     cpu_to_le64(rx_ring->lbq_base_indirect_dma);
2486                 bq_len = (rx_ring->lbq_buf_size == 65536) ? 0 :
2487                         (u16) rx_ring->lbq_buf_size;
2488                 cqicb->lbq_buf_size = cpu_to_le16(bq_len);
2489                 bq_len = (rx_ring->lbq_len == 65536) ? 0 :
2490                         (u16) rx_ring->lbq_len;
2491                 cqicb->lbq_len = cpu_to_le16(bq_len);
2492                 rx_ring->lbq_prod_idx = rx_ring->lbq_len - 16;
2493                 rx_ring->lbq_curr_idx = 0;
2494                 rx_ring->lbq_clean_idx = rx_ring->lbq_prod_idx;
2495                 rx_ring->lbq_free_cnt = 16;
2496         }
2497         if (rx_ring->sbq_len) {
2498                 cqicb->flags |= FLAGS_LS;       /* Load sbq values */
2499                 *((u64 *) rx_ring->sbq_base_indirect) = rx_ring->sbq_base_dma;
2500                 cqicb->sbq_addr =
2501                     cpu_to_le64(rx_ring->sbq_base_indirect_dma);
2502                 cqicb->sbq_buf_size =
2503                     cpu_to_le16(((rx_ring->sbq_buf_size / 2) + 8) & 0xfffffff8);
2504                 bq_len = (rx_ring->sbq_len == 65536) ? 0 :
2505                         (u16) rx_ring->sbq_len;
2506                 cqicb->sbq_len = cpu_to_le16(bq_len);
2507                 rx_ring->sbq_prod_idx = rx_ring->sbq_len - 16;
2508                 rx_ring->sbq_curr_idx = 0;
2509                 rx_ring->sbq_clean_idx = rx_ring->sbq_prod_idx;
2510                 rx_ring->sbq_free_cnt = 16;
2511         }
2512         switch (rx_ring->type) {
2513         case TX_Q:
2514                 /* If there's only one interrupt, then we use
2515                  * worker threads to process the outbound
2516                  * completion handling rx_rings. We do this so
2517                  * they can be run on multiple CPUs. There is
2518                  * room to play with this more where we would only
2519                  * run in a worker if there are more than x number
2520                  * of outbound completions on the queue and more
2521                  * than one queue active.  Some threshold that
2522                  * would indicate a benefit in spite of the cost
2523                  * of a context switch.
2524                  * If there's more than one interrupt, then the
2525                  * outbound completions are processed in the ISR.
2526                  */
2527                 if (!test_bit(QL_MSIX_ENABLED, &qdev->flags))
2528                         INIT_DELAYED_WORK(&rx_ring->rx_work, ql_tx_clean);
2529                 else {
2530                         /* With all debug warnings on we see a WARN_ON message
2531                          * when we free the skb in the interrupt context.
2532                          */
2533                         INIT_DELAYED_WORK(&rx_ring->rx_work, ql_tx_clean);
2534                 }
2535                 cqicb->irq_delay = cpu_to_le16(qdev->tx_coalesce_usecs);
2536                 cqicb->pkt_delay = cpu_to_le16(qdev->tx_max_coalesced_frames);
2537                 break;
2538         case DEFAULT_Q:
2539                 INIT_DELAYED_WORK(&rx_ring->rx_work, ql_rx_clean);
2540                 cqicb->irq_delay = 0;
2541                 cqicb->pkt_delay = 0;
2542                 break;
2543         case RX_Q:
2544                 /* Inbound completion handling rx_rings run in
2545                  * separate NAPI contexts.
2546                  */
2547                 netif_napi_add(qdev->ndev, &rx_ring->napi, ql_napi_poll_msix,
2548                                64);
2549                 cqicb->irq_delay = cpu_to_le16(qdev->rx_coalesce_usecs);
2550                 cqicb->pkt_delay = cpu_to_le16(qdev->rx_max_coalesced_frames);
2551                 break;
2552         default:
2553                 QPRINTK(qdev, IFUP, DEBUG, "Invalid rx_ring->type = %d.\n",
2554                         rx_ring->type);
2555         }
2556         QPRINTK(qdev, IFUP, INFO, "Initializing rx work queue.\n");
2557         err = ql_write_cfg(qdev, cqicb, sizeof(struct cqicb),
2558                            CFG_LCQ, rx_ring->cq_id);
2559         if (err) {
2560                 QPRINTK(qdev, IFUP, ERR, "Failed to load CQICB.\n");
2561                 return err;
2562         }
2563         QPRINTK(qdev, IFUP, INFO, "Successfully loaded CQICB.\n");
2564         /*
2565          * Advance the producer index for the buffer queues.
2566          */
2567         wmb();
2568         if (rx_ring->lbq_len)
2569                 ql_write_db_reg(rx_ring->lbq_prod_idx,
2570                                 rx_ring->lbq_prod_idx_db_reg);
2571         if (rx_ring->sbq_len)
2572                 ql_write_db_reg(rx_ring->sbq_prod_idx,
2573                                 rx_ring->sbq_prod_idx_db_reg);
2574         return err;
2575 }
2576
2577 static int ql_start_tx_ring(struct ql_adapter *qdev, struct tx_ring *tx_ring)
2578 {
2579         struct wqicb *wqicb = (struct wqicb *)tx_ring;
2580         void __iomem *doorbell_area =
2581             qdev->doorbell_area + (DB_PAGE_SIZE * tx_ring->wq_id);
2582         void *shadow_reg = qdev->tx_ring_shadow_reg_area +
2583             (tx_ring->wq_id * sizeof(u64));
2584         u64 shadow_reg_dma = qdev->tx_ring_shadow_reg_dma +
2585             (tx_ring->wq_id * sizeof(u64));
2586         int err = 0;
2587
2588         /*
2589          * Assign doorbell registers for this tx_ring.
2590          */
2591         /* TX PCI doorbell mem area for tx producer index */
2592         tx_ring->prod_idx_db_reg = (u32 __iomem *) doorbell_area;
2593         tx_ring->prod_idx = 0;
2594         /* TX PCI doorbell mem area + 0x04 */
2595         tx_ring->valid_db_reg = doorbell_area + 0x04;
2596
2597         /*
2598          * Assign shadow registers for this tx_ring.
2599          */
2600         tx_ring->cnsmr_idx_sh_reg = shadow_reg;
2601         tx_ring->cnsmr_idx_sh_reg_dma = shadow_reg_dma;
2602
2603         wqicb->len = cpu_to_le16(tx_ring->wq_len | Q_LEN_V | Q_LEN_CPP_CONT);
2604         wqicb->flags = cpu_to_le16(Q_FLAGS_LC |
2605                                    Q_FLAGS_LB | Q_FLAGS_LI | Q_FLAGS_LO);
2606         wqicb->cq_id_rss = cpu_to_le16(tx_ring->cq_id);
2607         wqicb->rid = 0;
2608         wqicb->addr = cpu_to_le64(tx_ring->wq_base_dma);
2609
2610         wqicb->cnsmr_idx_addr = cpu_to_le64(tx_ring->cnsmr_idx_sh_reg_dma);
2611
2612         ql_init_tx_ring(qdev, tx_ring);
2613
2614         err = ql_write_cfg(qdev, wqicb, sizeof(wqicb), CFG_LRQ,
2615                            (u16) tx_ring->wq_id);
2616         if (err) {
2617                 QPRINTK(qdev, IFUP, ERR, "Failed to load tx_ring.\n");
2618                 return err;
2619         }
2620         QPRINTK(qdev, IFUP, INFO, "Successfully loaded WQICB.\n");
2621         return err;
2622 }
2623
2624 static void ql_disable_msix(struct ql_adapter *qdev)
2625 {
2626         if (test_bit(QL_MSIX_ENABLED, &qdev->flags)) {
2627                 pci_disable_msix(qdev->pdev);
2628                 clear_bit(QL_MSIX_ENABLED, &qdev->flags);
2629                 kfree(qdev->msi_x_entry);
2630                 qdev->msi_x_entry = NULL;
2631         } else if (test_bit(QL_MSI_ENABLED, &qdev->flags)) {
2632                 pci_disable_msi(qdev->pdev);
2633                 clear_bit(QL_MSI_ENABLED, &qdev->flags);
2634         }
2635 }
2636
2637 static void ql_enable_msix(struct ql_adapter *qdev)
2638 {
2639         int i;
2640
2641         qdev->intr_count = 1;
2642         /* Get the MSIX vectors. */
2643         if (irq_type == MSIX_IRQ) {
2644                 /* Try to alloc space for the msix struct,
2645                  * if it fails then go to MSI/legacy.
2646                  */
2647                 qdev->msi_x_entry = kcalloc(qdev->rx_ring_count,
2648                                             sizeof(struct msix_entry),
2649                                             GFP_KERNEL);
2650                 if (!qdev->msi_x_entry) {
2651                         irq_type = MSI_IRQ;
2652                         goto msi;
2653                 }
2654
2655                 for (i = 0; i < qdev->rx_ring_count; i++)
2656                         qdev->msi_x_entry[i].entry = i;
2657
2658                 if (!pci_enable_msix
2659                     (qdev->pdev, qdev->msi_x_entry, qdev->rx_ring_count)) {
2660                         set_bit(QL_MSIX_ENABLED, &qdev->flags);
2661                         qdev->intr_count = qdev->rx_ring_count;
2662                         QPRINTK(qdev, IFUP, INFO,
2663                                 "MSI-X Enabled, got %d vectors.\n",
2664                                 qdev->intr_count);
2665                         return;
2666                 } else {
2667                         kfree(qdev->msi_x_entry);
2668                         qdev->msi_x_entry = NULL;
2669                         QPRINTK(qdev, IFUP, WARNING,
2670                                 "MSI-X Enable failed, trying MSI.\n");
2671                         irq_type = MSI_IRQ;
2672                 }
2673         }
2674 msi:
2675         if (irq_type == MSI_IRQ) {
2676                 if (!pci_enable_msi(qdev->pdev)) {
2677                         set_bit(QL_MSI_ENABLED, &qdev->flags);
2678                         QPRINTK(qdev, IFUP, INFO,
2679                                 "Running with MSI interrupts.\n");
2680                         return;
2681                 }
2682         }
2683         irq_type = LEG_IRQ;
2684         QPRINTK(qdev, IFUP, DEBUG, "Running with legacy interrupts.\n");
2685 }
2686
2687 /*
2688  * Here we build the intr_context structures based on
2689  * our rx_ring count and intr vector count.
2690  * The intr_context structure is used to hook each vector
2691  * to possibly different handlers.
2692  */
2693 static void ql_resolve_queues_to_irqs(struct ql_adapter *qdev)
2694 {
2695         int i = 0;
2696         struct intr_context *intr_context = &qdev->intr_context[0];
2697
2698         ql_enable_msix(qdev);
2699
2700         if (likely(test_bit(QL_MSIX_ENABLED, &qdev->flags))) {
2701                 /* Each rx_ring has it's
2702                  * own intr_context since we have separate
2703                  * vectors for each queue.
2704                  * This only true when MSI-X is enabled.
2705                  */
2706                 for (i = 0; i < qdev->intr_count; i++, intr_context++) {
2707                         qdev->rx_ring[i].irq = i;
2708                         intr_context->intr = i;
2709                         intr_context->qdev = qdev;
2710                         /*
2711                          * We set up each vectors enable/disable/read bits so
2712                          * there's no bit/mask calculations in the critical path.
2713                          */
2714                         intr_context->intr_en_mask =
2715                             INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK |
2716                             INTR_EN_TYPE_ENABLE | INTR_EN_IHD_MASK | INTR_EN_IHD
2717                             | i;
2718                         intr_context->intr_dis_mask =
2719                             INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK |
2720                             INTR_EN_TYPE_DISABLE | INTR_EN_IHD_MASK |
2721                             INTR_EN_IHD | i;
2722                         intr_context->intr_read_mask =
2723                             INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK |
2724                             INTR_EN_TYPE_READ | INTR_EN_IHD_MASK | INTR_EN_IHD |
2725                             i;
2726
2727                         if (i == 0) {
2728                                 /*
2729                                  * Default queue handles bcast/mcast plus
2730                                  * async events.  Needs buffers.
2731                                  */
2732                                 intr_context->handler = qlge_isr;
2733                                 sprintf(intr_context->name, "%s-default-queue",
2734                                         qdev->ndev->name);
2735                         } else if (i < qdev->rss_ring_first_cq_id) {
2736                                 /*
2737                                  * Outbound queue is for outbound completions only.
2738                                  */
2739                                 intr_context->handler = qlge_msix_tx_isr;
2740                                 sprintf(intr_context->name, "%s-tx-%d",
2741                                         qdev->ndev->name, i);
2742                         } else {
2743                                 /*
2744                                  * Inbound queues handle unicast frames only.
2745                                  */
2746                                 intr_context->handler = qlge_msix_rx_isr;
2747                                 sprintf(intr_context->name, "%s-rx-%d",
2748                                         qdev->ndev->name, i);
2749                         }
2750                 }
2751         } else {
2752                 /*
2753                  * All rx_rings use the same intr_context since
2754                  * there is only one vector.
2755                  */
2756                 intr_context->intr = 0;
2757                 intr_context->qdev = qdev;
2758                 /*
2759                  * We set up each vectors enable/disable/read bits so
2760                  * there's no bit/mask calculations in the critical path.
2761                  */
2762                 intr_context->intr_en_mask =
2763                     INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK | INTR_EN_TYPE_ENABLE;
2764                 intr_context->intr_dis_mask =
2765                     INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK |
2766                     INTR_EN_TYPE_DISABLE;
2767                 intr_context->intr_read_mask =
2768                     INTR_EN_TYPE_MASK | INTR_EN_INTR_MASK | INTR_EN_TYPE_READ;
2769                 /*
2770                  * Single interrupt means one handler for all rings.
2771                  */
2772                 intr_context->handler = qlge_isr;
2773                 sprintf(intr_context->name, "%s-single_irq", qdev->ndev->name);
2774                 for (i = 0; i < qdev->rx_ring_count; i++)
2775                         qdev->rx_ring[i].irq = 0;
2776         }
2777 }
2778
2779 static void ql_free_irq(struct ql_adapter *qdev)
2780 {
2781         int i;
2782         struct intr_context *intr_context = &qdev->intr_context[0];
2783
2784         for (i = 0; i < qdev->intr_count; i++, intr_context++) {
2785                 if (intr_context->hooked) {
2786                         if (test_bit(QL_MSIX_ENABLED, &qdev->flags)) {
2787                                 free_irq(qdev->msi_x_entry[i].vector,
2788                                          &qdev->rx_ring[i]);
2789                                 QPRINTK(qdev, IFDOWN, ERR,
2790                                         "freeing msix interrupt %d.\n", i);
2791                         } else {
2792                                 free_irq(qdev->pdev->irq, &qdev->rx_ring[0]);
2793                                 QPRINTK(qdev, IFDOWN, ERR,
2794                                         "freeing msi interrupt %d.\n", i);
2795                         }
2796                 }
2797         }
2798         ql_disable_msix(qdev);
2799 }
2800
2801 static int ql_request_irq(struct ql_adapter *qdev)
2802 {
2803         int i;
2804         int status = 0;
2805         struct pci_dev *pdev = qdev->pdev;
2806         struct intr_context *intr_context = &qdev->intr_context[0];
2807
2808         ql_resolve_queues_to_irqs(qdev);
2809
2810         for (i = 0; i < qdev->intr_count; i++, intr_context++) {
2811                 atomic_set(&intr_context->irq_cnt, 0);
2812                 if (test_bit(QL_MSIX_ENABLED, &qdev->flags)) {
2813                         status = request_irq(qdev->msi_x_entry[i].vector,
2814                                              intr_context->handler,
2815                                              0,
2816                                              intr_context->name,
2817                                              &qdev->rx_ring[i]);
2818                         if (status) {
2819                                 QPRINTK(qdev, IFUP, ERR,
2820                                         "Failed request for MSIX interrupt %d.\n",
2821                                         i);
2822                                 goto err_irq;
2823                         } else {
2824                                 QPRINTK(qdev, IFUP, INFO,
2825                                         "Hooked intr %d, queue type %s%s%s, with name %s.\n",
2826                                         i,
2827                                         qdev->rx_ring[i].type ==
2828                                         DEFAULT_Q ? "DEFAULT_Q" : "",
2829                                         qdev->rx_ring[i].type ==
2830                                         TX_Q ? "TX_Q" : "",
2831                                         qdev->rx_ring[i].type ==
2832                                         RX_Q ? "RX_Q" : "", intr_context->name);
2833                         }
2834                 } else {
2835                         QPRINTK(qdev, IFUP, DEBUG,
2836                                 "trying msi or legacy interrupts.\n");
2837                         QPRINTK(qdev, IFUP, DEBUG,
2838                                 "%s: irq = %d.\n", __func__, pdev->irq);
2839                         QPRINTK(qdev, IFUP, DEBUG,
2840                                 "%s: context->name = %s.\n", __func__,
2841                                intr_context->name);
2842                         QPRINTK(qdev, IFUP, DEBUG,
2843                                 "%s: dev_id = 0x%p.\n", __func__,
2844                                &qdev->rx_ring[0]);
2845                         status =
2846                             request_irq(pdev->irq, qlge_isr,
2847                                         test_bit(QL_MSI_ENABLED,
2848                                                  &qdev->
2849                                                  flags) ? 0 : IRQF_SHARED,
2850                                         intr_context->name, &qdev->rx_ring[0]);
2851                         if (status)
2852                                 goto err_irq;
2853
2854                         QPRINTK(qdev, IFUP, ERR,
2855                                 "Hooked intr %d, queue type %s%s%s, with name %s.\n",
2856                                 i,
2857                                 qdev->rx_ring[0].type ==
2858                                 DEFAULT_Q ? "DEFAULT_Q" : "",
2859                                 qdev->rx_ring[0].type == TX_Q ? "TX_Q" : "",
2860                                 qdev->rx_ring[0].type == RX_Q ? "RX_Q" : "",
2861                                 intr_context->name);
2862                 }
2863                 intr_context->hooked = 1;
2864         }
2865         return status;
2866 err_irq:
2867         QPRINTK(qdev, IFUP, ERR, "Failed to get the interrupts!!!/n");
2868         ql_free_irq(qdev);
2869         return status;
2870 }
2871
2872 static int ql_start_rss(struct ql_adapter *qdev)
2873 {
2874         struct ricb *ricb = &qdev->ricb;
2875         int status = 0;
2876         int i;
2877         u8 *hash_id = (u8 *) ricb->hash_cq_id;
2878
2879         memset((void *)ricb, 0, sizeof(ricb));
2880
2881         ricb->base_cq = qdev->rss_ring_first_cq_id | RSS_L4K;
2882         ricb->flags =
2883             (RSS_L6K | RSS_LI | RSS_LB | RSS_LM | RSS_RI4 | RSS_RI6 | RSS_RT4 |
2884              RSS_RT6);
2885         ricb->mask = cpu_to_le16(qdev->rss_ring_count - 1);
2886
2887         /*
2888          * Fill out the Indirection Table.
2889          */
2890         for (i = 0; i < 256; i++)
2891                 hash_id[i] = i & (qdev->rss_ring_count - 1);
2892
2893         /*
2894          * Random values for the IPv6 and IPv4 Hash Keys.
2895          */
2896         get_random_bytes((void *)&ricb->ipv6_hash_key[0], 40);
2897         get_random_bytes((void *)&ricb->ipv4_hash_key[0], 16);
2898
2899         QPRINTK(qdev, IFUP, INFO, "Initializing RSS.\n");
2900
2901         status = ql_write_cfg(qdev, ricb, sizeof(ricb), CFG_LR, 0);
2902         if (status) {
2903                 QPRINTK(qdev, IFUP, ERR, "Failed to load RICB.\n");
2904                 return status;
2905         }
2906         QPRINTK(qdev, IFUP, INFO, "Successfully loaded RICB.\n");
2907         return status;
2908 }
2909
2910 /* Initialize the frame-to-queue routing. */
2911 static int ql_route_initialize(struct ql_adapter *qdev)
2912 {
2913         int status = 0;
2914         int i;
2915
2916         status = ql_sem_spinlock(qdev, SEM_RT_IDX_MASK);
2917         if (status)
2918                 return status;
2919
2920         /* Clear all the entries in the routing table. */
2921         for (i = 0; i < 16; i++) {
2922                 status = ql_set_routing_reg(qdev, i, 0, 0);
2923                 if (status) {
2924                         QPRINTK(qdev, IFUP, ERR,
2925                                 "Failed to init routing register for CAM packets.\n");
2926                         goto exit;
2927                 }
2928         }
2929
2930         status = ql_set_routing_reg(qdev, RT_IDX_ALL_ERR_SLOT, RT_IDX_ERR, 1);
2931         if (status) {
2932                 QPRINTK(qdev, IFUP, ERR,
2933                         "Failed to init routing register for error packets.\n");
2934                 goto exit;
2935         }
2936         status = ql_set_routing_reg(qdev, RT_IDX_BCAST_SLOT, RT_IDX_BCAST, 1);
2937         if (status) {
2938                 QPRINTK(qdev, IFUP, ERR,
2939                         "Failed to init routing register for broadcast packets.\n");
2940                 goto exit;
2941         }
2942         /* If we have more than one inbound queue, then turn on RSS in the
2943          * routing block.
2944          */
2945         if (qdev->rss_ring_count > 1) {
2946                 status = ql_set_routing_reg(qdev, RT_IDX_RSS_MATCH_SLOT,
2947                                         RT_IDX_RSS_MATCH, 1);
2948                 if (status) {
2949                         QPRINTK(qdev, IFUP, ERR,
2950                                 "Failed to init routing register for MATCH RSS packets.\n");
2951                         goto exit;
2952                 }
2953         }
2954
2955         status = ql_set_routing_reg(qdev, RT_IDX_CAM_HIT_SLOT,
2956                                     RT_IDX_CAM_HIT, 1);
2957         if (status)
2958                 QPRINTK(qdev, IFUP, ERR,
2959                         "Failed to init routing register for CAM packets.\n");
2960 exit:
2961         ql_sem_unlock(qdev, SEM_RT_IDX_MASK);
2962         return status;
2963 }
2964
2965 static int ql_cam_route_initialize(struct ql_adapter *qdev)
2966 {
2967         int status;
2968
2969         status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
2970         if (status)
2971                 return status;
2972         status = ql_set_mac_addr_reg(qdev, (u8 *) qdev->ndev->perm_addr,
2973                              MAC_ADDR_TYPE_CAM_MAC, qdev->func * MAX_CQ);
2974         ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
2975         if (status) {
2976                 QPRINTK(qdev, IFUP, ERR, "Failed to init mac address.\n");
2977                 return status;
2978         }
2979
2980         status = ql_route_initialize(qdev);
2981         if (status)
2982                 QPRINTK(qdev, IFUP, ERR, "Failed to init routing table.\n");
2983
2984         return status;
2985 }
2986
2987 static int ql_adapter_initialize(struct ql_adapter *qdev)
2988 {
2989         u32 value, mask;
2990         int i;
2991         int status = 0;
2992
2993         /*
2994          * Set up the System register to halt on errors.
2995          */
2996         value = SYS_EFE | SYS_FAE;
2997         mask = value << 16;
2998         ql_write32(qdev, SYS, mask | value);
2999
3000         /* Set the default queue. */
3001         value = NIC_RCV_CFG_DFQ;
3002         mask = NIC_RCV_CFG_DFQ_MASK;
3003         ql_write32(qdev, NIC_RCV_CFG, (mask | value));
3004
3005         /* Set the MPI interrupt to enabled. */
3006         ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16) | INTR_MASK_PI);
3007
3008         /* Enable the function, set pagesize, enable error checking. */
3009         value = FSC_FE | FSC_EPC_INBOUND | FSC_EPC_OUTBOUND |
3010             FSC_EC | FSC_VM_PAGE_4K | FSC_SH;
3011
3012         /* Set/clear header splitting. */
3013         mask = FSC_VM_PAGESIZE_MASK |
3014             FSC_DBL_MASK | FSC_DBRST_MASK | (value << 16);
3015         ql_write32(qdev, FSC, mask | value);
3016
3017         ql_write32(qdev, SPLT_HDR, SPLT_HDR_EP |
3018                 min(SMALL_BUFFER_SIZE, MAX_SPLIT_SIZE));
3019
3020         /* Start up the rx queues. */
3021         for (i = 0; i < qdev->rx_ring_count; i++) {
3022                 status = ql_start_rx_ring(qdev, &qdev->rx_ring[i]);
3023                 if (status) {
3024                         QPRINTK(qdev, IFUP, ERR,
3025                                 "Failed to start rx ring[%d].\n", i);
3026                         return status;
3027                 }
3028         }
3029
3030         /* If there is more than one inbound completion queue
3031          * then download a RICB to configure RSS.
3032          */
3033         if (qdev->rss_ring_count > 1) {
3034                 status = ql_start_rss(qdev);
3035                 if (status) {
3036                         QPRINTK(qdev, IFUP, ERR, "Failed to start RSS.\n");
3037                         return status;
3038                 }
3039         }
3040
3041         /* Start up the tx queues. */
3042         for (i = 0; i < qdev->tx_ring_count; i++) {
3043                 status = ql_start_tx_ring(qdev, &qdev->tx_ring[i]);
3044                 if (status) {
3045                         QPRINTK(qdev, IFUP, ERR,
3046                                 "Failed to start tx ring[%d].\n", i);
3047                         return status;
3048                 }
3049         }
3050
3051         status = ql_port_initialize(qdev);
3052         if (status) {
3053                 QPRINTK(qdev, IFUP, ERR, "Failed to start port.\n");
3054                 return status;
3055         }
3056
3057         /* Set up the MAC address and frame routing filter. */
3058         status = ql_cam_route_initialize(qdev);
3059         if (status) {
3060                 QPRINTK(qdev, IFUP, ERR,
3061                                 "Failed to init CAM/Routing tables.\n");
3062                 return status;
3063         }
3064
3065         /* Start NAPI for the RSS queues. */
3066         for (i = qdev->rss_ring_first_cq_id; i < qdev->rx_ring_count; i++) {
3067                 QPRINTK(qdev, IFUP, INFO, "Enabling NAPI for rx_ring[%d].\n",
3068                         i);
3069                 napi_enable(&qdev->rx_ring[i].napi);
3070         }
3071
3072         return status;
3073 }
3074
3075 /* Issue soft reset to chip. */
3076 static int ql_adapter_reset(struct ql_adapter *qdev)
3077 {
3078         u32 value;
3079         int max_wait_time;
3080         int status = 0;
3081         int resetCnt = 0;
3082
3083 #define MAX_RESET_CNT   1
3084 issueReset:
3085         resetCnt++;
3086         QPRINTK(qdev, IFDOWN, DEBUG, "Issue soft reset to chip.\n");
3087         ql_write32(qdev, RST_FO, (RST_FO_FR << 16) | RST_FO_FR);
3088         /* Wait for reset to complete. */
3089         max_wait_time = 3;
3090         QPRINTK(qdev, IFDOWN, DEBUG, "Wait %d seconds for reset to complete.\n",
3091                 max_wait_time);
3092         do {
3093                 value = ql_read32(qdev, RST_FO);
3094                 if ((value & RST_FO_FR) == 0)
3095                         break;
3096
3097                 ssleep(1);
3098         } while ((--max_wait_time));
3099         if (value & RST_FO_FR) {
3100                 QPRINTK(qdev, IFDOWN, ERR,
3101                         "Stuck in SoftReset:  FSC_SR:0x%08x\n", value);
3102                 if (resetCnt < MAX_RESET_CNT)
3103                         goto issueReset;
3104         }
3105         if (max_wait_time == 0) {
3106                 status = -ETIMEDOUT;
3107                 QPRINTK(qdev, IFDOWN, ERR,
3108                         "ETIMEOUT!!! errored out of resetting the chip!\n");
3109         }
3110
3111         return status;
3112 }
3113
3114 static void ql_display_dev_info(struct net_device *ndev)
3115 {
3116         struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev);
3117
3118         QPRINTK(qdev, PROBE, INFO,
3119                 "Function #%d, NIC Roll %d, NIC Rev = %d, "
3120                 "XG Roll = %d, XG Rev = %d.\n",
3121                 qdev->func,
3122                 qdev->chip_rev_id & 0x0000000f,
3123                 qdev->chip_rev_id >> 4 & 0x0000000f,
3124                 qdev->chip_rev_id >> 8 & 0x0000000f,
3125                 qdev->chip_rev_id >> 12 & 0x0000000f);
3126         QPRINTK(qdev, PROBE, INFO, "MAC address %pM\n", ndev->dev_addr);
3127 }
3128
3129 static int ql_adapter_down(struct ql_adapter *qdev)
3130 {
3131         struct net_device *ndev = qdev->ndev;
3132         int i, status = 0;
3133         struct rx_ring *rx_ring;
3134
3135         netif_stop_queue(ndev);
3136         netif_carrier_off(ndev);
3137
3138         /* Don't kill the reset worker thread if we
3139          * are in the process of recovery.
3140          */
3141         if (test_bit(QL_ADAPTER_UP, &qdev->flags))
3142                 cancel_delayed_work_sync(&qdev->asic_reset_work);
3143         cancel_delayed_work_sync(&qdev->mpi_reset_work);
3144         cancel_delayed_work_sync(&qdev->mpi_work);
3145
3146         /* The default queue at index 0 is always processed in
3147          * a workqueue.
3148          */
3149         cancel_delayed_work_sync(&qdev->rx_ring[0].rx_work);
3150
3151         /* The rest of the rx_rings are processed in
3152          * a workqueue only if it's a single interrupt
3153          * environment (MSI/Legacy).
3154          */
3155         for (i = 1; i < qdev->rx_ring_count; i++) {
3156                 rx_ring = &qdev->rx_ring[i];
3157                 /* Only the RSS rings use NAPI on multi irq
3158                  * environment.  Outbound completion processing
3159                  * is done in interrupt context.
3160                  */
3161                 if (i >= qdev->rss_ring_first_cq_id) {
3162                         napi_disable(&rx_ring->napi);
3163                 } else {
3164                         cancel_delayed_work_sync(&rx_ring->rx_work);
3165                 }
3166         }
3167
3168         clear_bit(QL_ADAPTER_UP, &qdev->flags);
3169
3170         ql_disable_interrupts(qdev);
3171
3172         ql_tx_ring_clean(qdev);
3173
3174         spin_lock(&qdev->hw_lock);
3175         status = ql_adapter_reset(qdev);
3176         if (status)
3177                 QPRINTK(qdev, IFDOWN, ERR, "reset(func #%d) FAILED!\n",
3178                         qdev->func);
3179         spin_unlock(&qdev->hw_lock);
3180         return status;
3181 }
3182
3183 static int ql_adapter_up(struct ql_adapter *qdev)
3184 {
3185         int err = 0;
3186
3187         spin_lock(&qdev->hw_lock);
3188         err = ql_adapter_initialize(qdev);
3189         if (err) {
3190                 QPRINTK(qdev, IFUP, INFO, "Unable to initialize adapter.\n");
3191                 spin_unlock(&qdev->hw_lock);
3192                 goto err_init;
3193         }
3194         spin_unlock(&qdev->hw_lock);
3195         set_bit(QL_ADAPTER_UP, &qdev->flags);
3196         ql_enable_interrupts(qdev);
3197         ql_enable_all_completion_interrupts(qdev);
3198         if ((ql_read32(qdev, STS) & qdev->port_init)) {
3199                 netif_carrier_on(qdev->ndev);
3200                 netif_start_queue(qdev->ndev);
3201         }
3202
3203         return 0;
3204 err_init:
3205         ql_adapter_reset(qdev);
3206         return err;
3207 }
3208
3209 static int ql_cycle_adapter(struct ql_adapter *qdev)
3210 {
3211         int status;
3212
3213         status = ql_adapter_down(qdev);
3214         if (status)
3215                 goto error;
3216
3217         status = ql_adapter_up(qdev);
3218         if (status)
3219                 goto error;
3220
3221         return status;
3222 error:
3223         QPRINTK(qdev, IFUP, ALERT,
3224                 "Driver up/down cycle failed, closing device\n");
3225         rtnl_lock();
3226         dev_close(qdev->ndev);
3227         rtnl_unlock();
3228         return status;
3229 }
3230
3231 static void ql_release_adapter_resources(struct ql_adapter *qdev)
3232 {
3233         ql_free_mem_resources(qdev);
3234         ql_free_irq(qdev);
3235 }
3236
3237 static int ql_get_adapter_resources(struct ql_adapter *qdev)
3238 {
3239         int status = 0;
3240
3241         if (ql_alloc_mem_resources(qdev)) {
3242                 QPRINTK(qdev, IFUP, ERR, "Unable to  allocate memory.\n");
3243                 return -ENOMEM;
3244         }
3245         status = ql_request_irq(qdev);
3246         if (status)
3247                 goto err_irq;
3248         return status;
3249 err_irq:
3250         ql_free_mem_resources(qdev);
3251         return status;
3252 }
3253
3254 static int qlge_close(struct net_device *ndev)
3255 {
3256         struct ql_adapter *qdev = netdev_priv(ndev);
3257
3258         /*
3259          * Wait for device to recover from a reset.
3260          * (Rarely happens, but possible.)
3261          */
3262         while (!test_bit(QL_ADAPTER_UP, &qdev->flags))
3263                 msleep(1);
3264         ql_adapter_down(qdev);
3265         ql_release_adapter_resources(qdev);
3266         return 0;
3267 }
3268
3269 static int ql_configure_rings(struct ql_adapter *qdev)
3270 {
3271         int i;
3272         struct rx_ring *rx_ring;
3273         struct tx_ring *tx_ring;
3274         int cpu_cnt = num_online_cpus();
3275
3276         /*
3277          * For each processor present we allocate one
3278          * rx_ring for outbound completions, and one
3279          * rx_ring for inbound completions.  Plus there is
3280          * always the one default queue.  For the CPU
3281          * counts we end up with the following rx_rings:
3282          * rx_ring count =
3283          *  one default queue +
3284          *  (CPU count * outbound completion rx_ring) +
3285          *  (CPU count * inbound (RSS) completion rx_ring)
3286          * To keep it simple we limit the total number of
3287          * queues to < 32, so we truncate CPU to 8.
3288          * This limitation can be removed when requested.
3289          */
3290
3291         if (cpu_cnt > MAX_CPUS)
3292                 cpu_cnt = MAX_CPUS;
3293
3294         /*
3295          * rx_ring[0] is always the default queue.
3296          */
3297         /* Allocate outbound completion ring for each CPU. */
3298         qdev->tx_ring_count = cpu_cnt;
3299         /* Allocate inbound completion (RSS) ring for each CPU. */
3300         qdev->rss_ring_count = cpu_cnt;
3301         /* cq_id for the first inbound ring handler. */
3302         qdev->rss_ring_first_cq_id = cpu_cnt + 1;
3303         /*
3304          * qdev->rx_ring_count:
3305          * Total number of rx_rings.  This includes the one
3306          * default queue, a number of outbound completion
3307          * handler rx_rings, and the number of inbound
3308          * completion handler rx_rings.
3309          */
3310         qdev->rx_ring_count = qdev->tx_ring_count + qdev->rss_ring_count + 1;
3311
3312         for (i = 0; i < qdev->tx_ring_count; i++) {
3313                 tx_ring = &qdev->tx_ring[i];
3314                 memset((void *)tx_ring, 0, sizeof(tx_ring));
3315                 tx_ring->qdev = qdev;
3316                 tx_ring->wq_id = i;
3317                 tx_ring->wq_len = qdev->tx_ring_size;
3318                 tx_ring->wq_size =
3319                     tx_ring->wq_len * sizeof(struct ob_mac_iocb_req);
3320
3321                 /*
3322                  * The completion queue ID for the tx rings start
3323                  * immediately after the default Q ID, which is zero.
3324                  */
3325                 tx_ring->cq_id = i + 1;
3326         }
3327
3328         for (i = 0; i < qdev->rx_ring_count; i++) {
3329                 rx_ring = &qdev->rx_ring[i];
3330                 memset((void *)rx_ring, 0, sizeof(rx_ring));
3331                 rx_ring->qdev = qdev;
3332                 rx_ring->cq_id = i;
3333                 rx_ring->cpu = i % cpu_cnt;     /* CPU to run handler on. */
3334                 if (i == 0) {   /* Default queue at index 0. */
3335                         /*
3336                          * Default queue handles bcast/mcast plus
3337                          * async events.  Needs buffers.
3338                          */
3339                         rx_ring->cq_len = qdev->rx_ring_size;
3340                         rx_ring->cq_size =
3341                             rx_ring->cq_len * sizeof(struct ql_net_rsp_iocb);
3342                         rx_ring->lbq_len = NUM_LARGE_BUFFERS;
3343                         rx_ring->lbq_size =
3344                             rx_ring->lbq_len * sizeof(__le64);
3345                         rx_ring->lbq_buf_size = LARGE_BUFFER_SIZE;
3346                         rx_ring->sbq_len = NUM_SMALL_BUFFERS;
3347                         rx_ring->sbq_size =
3348                             rx_ring->sbq_len * sizeof(__le64);
3349                         rx_ring->sbq_buf_size = SMALL_BUFFER_SIZE * 2;
3350                         rx_ring->type = DEFAULT_Q;
3351                 } else if (i < qdev->rss_ring_first_cq_id) {
3352                         /*
3353                          * Outbound queue handles outbound completions only.
3354                          */
3355                         /* outbound cq is same size as tx_ring it services. */
3356                         rx_ring->cq_len = qdev->tx_ring_size;
3357                         rx_ring->cq_size =
3358                             rx_ring->cq_len * sizeof(struct ql_net_rsp_iocb);
3359                         rx_ring->lbq_len = 0;
3360                         rx_ring->lbq_size = 0;
3361                         rx_ring->lbq_buf_size = 0;
3362                         rx_ring->sbq_len = 0;
3363                         rx_ring->sbq_size = 0;
3364                         rx_ring->sbq_buf_size = 0;
3365                         rx_ring->type = TX_Q;
3366                 } else {        /* Inbound completions (RSS) queues */
3367                         /*
3368                          * Inbound queues handle unicast frames only.
3369                          */
3370                         rx_ring->cq_len = qdev->rx_ring_size;
3371                         rx_ring->cq_size =
3372                             rx_ring->cq_len * sizeof(struct ql_net_rsp_iocb);
3373                         rx_ring->lbq_len = NUM_LARGE_BUFFERS;
3374                         rx_ring->lbq_size =
3375                             rx_ring->lbq_len * sizeof(__le64);
3376                         rx_ring->lbq_buf_size = LARGE_BUFFER_SIZE;
3377                         rx_ring->sbq_len = NUM_SMALL_BUFFERS;
3378                         rx_ring->sbq_size =
3379                             rx_ring->sbq_len * sizeof(__le64);
3380                         rx_ring->sbq_buf_size = SMALL_BUFFER_SIZE * 2;
3381                         rx_ring->type = RX_Q;
3382                 }
3383         }
3384         return 0;
3385 }
3386
3387 static int qlge_open(struct net_device *ndev)
3388 {
3389         int err = 0;
3390         struct ql_adapter *qdev = netdev_priv(ndev);
3391
3392         err = ql_configure_rings(qdev);
3393         if (err)
3394                 return err;
3395
3396         err = ql_get_adapter_resources(qdev);
3397         if (err)
3398                 goto error_up;
3399
3400         err = ql_adapter_up(qdev);
3401         if (err)
3402                 goto error_up;
3403
3404         return err;
3405
3406 error_up:
3407         ql_release_adapter_resources(qdev);
3408         return err;
3409 }
3410
3411 static int qlge_change_mtu(struct net_device *ndev, int new_mtu)
3412 {
3413         struct ql_adapter *qdev = netdev_priv(ndev);
3414
3415         if (ndev->mtu == 1500 && new_mtu == 9000) {
3416                 QPRINTK(qdev, IFUP, ERR, "Changing to jumbo MTU.\n");
3417         } else if (ndev->mtu == 9000 && new_mtu == 1500) {
3418                 QPRINTK(qdev, IFUP, ERR, "Changing to normal MTU.\n");
3419         } else if ((ndev->mtu == 1500 && new_mtu == 1500) ||
3420                    (ndev->mtu == 9000 && new_mtu == 9000)) {
3421                 return 0;
3422         } else
3423                 return -EINVAL;
3424         ndev->mtu = new_mtu;
3425         return 0;
3426 }
3427
3428 static struct net_device_stats *qlge_get_stats(struct net_device
3429                                                *ndev)
3430 {
3431         struct ql_adapter *qdev = netdev_priv(ndev);
3432         return &qdev->stats;
3433 }
3434
3435 static void qlge_set_multicast_list(struct net_device *ndev)
3436 {
3437         struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev);
3438         struct dev_mc_list *mc_ptr;
3439         int i, status;
3440
3441         status = ql_sem_spinlock(qdev, SEM_RT_IDX_MASK);
3442         if (status)
3443                 return;
3444         spin_lock(&qdev->hw_lock);
3445         /*
3446          * Set or clear promiscuous mode if a
3447          * transition is taking place.
3448          */
3449         if (ndev->flags & IFF_PROMISC) {
3450                 if (!test_bit(QL_PROMISCUOUS, &qdev->flags)) {
3451                         if (ql_set_routing_reg
3452                             (qdev, RT_IDX_PROMISCUOUS_SLOT, RT_IDX_VALID, 1)) {
3453                                 QPRINTK(qdev, HW, ERR,
3454                                         "Failed to set promiscous mode.\n");
3455                         } else {
3456                                 set_bit(QL_PROMISCUOUS, &qdev->flags);
3457                         }
3458                 }
3459         } else {
3460                 if (test_bit(QL_PROMISCUOUS, &qdev->flags)) {
3461                         if (ql_set_routing_reg
3462                             (qdev, RT_IDX_PROMISCUOUS_SLOT, RT_IDX_VALID, 0)) {
3463                                 QPRINTK(qdev, HW, ERR,
3464                                         "Failed to clear promiscous mode.\n");
3465                         } else {
3466                                 clear_bit(QL_PROMISCUOUS, &qdev->flags);
3467                         }
3468                 }
3469         }
3470
3471         /*
3472          * Set or clear all multicast mode if a
3473          * transition is taking place.
3474          */
3475         if ((ndev->flags & IFF_ALLMULTI) ||
3476             (ndev->mc_count > MAX_MULTICAST_ENTRIES)) {
3477                 if (!test_bit(QL_ALLMULTI, &qdev->flags)) {
3478                         if (ql_set_routing_reg
3479                             (qdev, RT_IDX_ALLMULTI_SLOT, RT_IDX_MCAST, 1)) {
3480                                 QPRINTK(qdev, HW, ERR,
3481                                         "Failed to set all-multi mode.\n");
3482                         } else {
3483                                 set_bit(QL_ALLMULTI, &qdev->flags);
3484                         }
3485                 }
3486         } else {
3487                 if (test_bit(QL_ALLMULTI, &qdev->flags)) {
3488                         if (ql_set_routing_reg
3489                             (qdev, RT_IDX_ALLMULTI_SLOT, RT_IDX_MCAST, 0)) {
3490                                 QPRINTK(qdev, HW, ERR,
3491                                         "Failed to clear all-multi mode.\n");
3492                         } else {
3493                                 clear_bit(QL_ALLMULTI, &qdev->flags);
3494                         }
3495                 }
3496         }
3497
3498         if (ndev->mc_count) {
3499                 status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
3500                 if (status)
3501                         goto exit;
3502                 for (i = 0, mc_ptr = ndev->mc_list; mc_ptr;
3503                      i++, mc_ptr = mc_ptr->next)
3504                         if (ql_set_mac_addr_reg(qdev, (u8 *) mc_ptr->dmi_addr,
3505                                                 MAC_ADDR_TYPE_MULTI_MAC, i)) {
3506                                 QPRINTK(qdev, HW, ERR,
3507                                         "Failed to loadmulticast address.\n");
3508                                 ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
3509                                 goto exit;
3510                         }
3511                 ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
3512                 if (ql_set_routing_reg
3513                     (qdev, RT_IDX_MCAST_MATCH_SLOT, RT_IDX_MCAST_MATCH, 1)) {
3514                         QPRINTK(qdev, HW, ERR,
3515                                 "Failed to set multicast match mode.\n");
3516                 } else {
3517                         set_bit(QL_ALLMULTI, &qdev->flags);
3518                 }
3519         }
3520 exit:
3521         spin_unlock(&qdev->hw_lock);
3522         ql_sem_unlock(qdev, SEM_RT_IDX_MASK);
3523 }
3524
3525 static int qlge_set_mac_address(struct net_device *ndev, void *p)
3526 {
3527         struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev);
3528         struct sockaddr *addr = p;
3529         int status;
3530
3531         if (netif_running(ndev))
3532                 return -EBUSY;
3533
3534         if (!is_valid_ether_addr(addr->sa_data))
3535                 return -EADDRNOTAVAIL;
3536         memcpy(ndev->dev_addr, addr->sa_data, ndev->addr_len);
3537
3538         status = ql_sem_spinlock(qdev, SEM_MAC_ADDR_MASK);
3539         if (status)
3540                 return status;
3541         spin_lock(&qdev->hw_lock);
3542         status = ql_set_mac_addr_reg(qdev, (u8 *) ndev->dev_addr,
3543                         MAC_ADDR_TYPE_CAM_MAC, qdev->func * MAX_CQ);
3544         spin_unlock(&qdev->hw_lock);
3545         if (status)
3546                 QPRINTK(qdev, HW, ERR, "Failed to load MAC address.\n");
3547         ql_sem_unlock(qdev, SEM_MAC_ADDR_MASK);
3548         return status;
3549 }
3550
3551 static void qlge_tx_timeout(struct net_device *ndev)
3552 {
3553         struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev);
3554         ql_queue_asic_error(qdev);
3555 }
3556
3557 static void ql_asic_reset_work(struct work_struct *work)
3558 {
3559         struct ql_adapter *qdev =
3560             container_of(work, struct ql_adapter, asic_reset_work.work);
3561         ql_cycle_adapter(qdev);
3562 }
3563
3564 static void ql_get_board_info(struct ql_adapter *qdev)
3565 {
3566         qdev->func =
3567             (ql_read32(qdev, STS) & STS_FUNC_ID_MASK) >> STS_FUNC_ID_SHIFT;
3568         if (qdev->func) {
3569                 qdev->xg_sem_mask = SEM_XGMAC1_MASK;
3570                 qdev->port_link_up = STS_PL1;
3571                 qdev->port_init = STS_PI1;
3572                 qdev->mailbox_in = PROC_ADDR_MPI_RISC | PROC_ADDR_FUNC2_MBI;
3573                 qdev->mailbox_out = PROC_ADDR_MPI_RISC | PROC_ADDR_FUNC2_MBO;
3574         } else {
3575                 qdev->xg_sem_mask = SEM_XGMAC0_MASK;
3576                 qdev->port_link_up = STS_PL0;
3577                 qdev->port_init = STS_PI0;
3578                 qdev->mailbox_in = PROC_ADDR_MPI_RISC | PROC_ADDR_FUNC0_MBI;
3579                 qdev->mailbox_out = PROC_ADDR_MPI_RISC | PROC_ADDR_FUNC0_MBO;
3580         }
3581         qdev->chip_rev_id = ql_read32(qdev, REV_ID);
3582 }
3583
3584 static void ql_release_all(struct pci_dev *pdev)
3585 {
3586         struct net_device *ndev = pci_get_drvdata(pdev);
3587         struct ql_adapter *qdev = netdev_priv(ndev);
3588
3589         if (qdev->workqueue) {
3590                 destroy_workqueue(qdev->workqueue);
3591                 qdev->workqueue = NULL;
3592         }
3593         if (qdev->q_workqueue) {
3594                 destroy_workqueue(qdev->q_workqueue);
3595                 qdev->q_workqueue = NULL;
3596         }
3597         if (qdev->reg_base)
3598                 iounmap(qdev->reg_base);
3599         if (qdev->doorbell_area)
3600                 iounmap(qdev->doorbell_area);
3601         pci_release_regions(pdev);
3602         pci_set_drvdata(pdev, NULL);
3603 }
3604
3605 static int __devinit ql_init_device(struct pci_dev *pdev,
3606                                     struct net_device *ndev, int cards_found)
3607 {
3608         struct ql_adapter *qdev = netdev_priv(ndev);
3609         int pos, err = 0;
3610         u16 val16;
3611
3612         memset((void *)qdev, 0, sizeof(qdev));
3613         err = pci_enable_device(pdev);
3614         if (err) {
3615                 dev_err(&pdev->dev, "PCI device enable failed.\n");
3616                 return err;
3617         }
3618
3619         pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
3620         if (pos <= 0) {
3621                 dev_err(&pdev->dev, PFX "Cannot find PCI Express capability, "
3622                         "aborting.\n");
3623                 goto err_out;
3624         } else {
3625                 pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
3626                 val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
3627                 val16 |= (PCI_EXP_DEVCTL_CERE |
3628                           PCI_EXP_DEVCTL_NFERE |
3629                           PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE);
3630                 pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
3631         }
3632
3633         err = pci_request_regions(pdev, DRV_NAME);
3634         if (err) {
3635                 dev_err(&pdev->dev, "PCI region request failed.\n");
3636                 goto err_out;
3637         }
3638
3639         pci_set_master(pdev);
3640         if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
3641                 set_bit(QL_DMA64, &qdev->flags);
3642                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
3643         } else {
3644                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
3645                 if (!err)
3646                        err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
3647         }
3648
3649         if (err) {
3650                 dev_err(&pdev->dev, "No usable DMA configuration.\n");
3651                 goto err_out;
3652         }
3653
3654         pci_set_drvdata(pdev, ndev);
3655         qdev->reg_base =
3656             ioremap_nocache(pci_resource_start(pdev, 1),
3657                             pci_resource_len(pdev, 1));
3658         if (!qdev->reg_base) {
3659                 dev_err(&pdev->dev, "Register mapping failed.\n");
3660                 err = -ENOMEM;
3661                 goto err_out;
3662         }
3663
3664         qdev->doorbell_area_size = pci_resource_len(pdev, 3);
3665         qdev->doorbell_area =
3666             ioremap_nocache(pci_resource_start(pdev, 3),
3667                             pci_resource_len(pdev, 3));
3668         if (!qdev->doorbell_area) {
3669                 dev_err(&pdev->dev, "Doorbell register mapping failed.\n");
3670                 err = -ENOMEM;
3671                 goto err_out;
3672         }
3673
3674         ql_get_board_info(qdev);
3675         qdev->ndev = ndev;
3676         qdev->pdev = pdev;
3677         qdev->msg_enable = netif_msg_init(debug, default_msg);
3678         spin_lock_init(&qdev->hw_lock);
3679         spin_lock_init(&qdev->stats_lock);
3680
3681         /* make sure the EEPROM is good */
3682         err = ql_get_flash_params(qdev);
3683         if (err) {
3684                 dev_err(&pdev->dev, "Invalid FLASH.\n");
3685                 goto err_out;
3686         }
3687
3688         if (!is_valid_ether_addr(qdev->flash.mac_addr))
3689                 goto err_out;
3690
3691         memcpy(ndev->dev_addr, qdev->flash.mac_addr, ndev->addr_len);
3692         memcpy(ndev->perm_addr, ndev->dev_addr, ndev->addr_len);
3693
3694         /* Set up the default ring sizes. */
3695         qdev->tx_ring_size = NUM_TX_RING_ENTRIES;
3696         qdev->rx_ring_size = NUM_RX_RING_ENTRIES;
3697
3698         /* Set up the coalescing parameters. */
3699         qdev->rx_coalesce_usecs = DFLT_COALESCE_WAIT;
3700         qdev->tx_coalesce_usecs = DFLT_COALESCE_WAIT;
3701         qdev->rx_max_coalesced_frames = DFLT_INTER_FRAME_WAIT;
3702         qdev->tx_max_coalesced_frames = DFLT_INTER_FRAME_WAIT;
3703
3704         /*
3705          * Set up the operating parameters.
3706          */
3707         qdev->rx_csum = 1;
3708
3709         qdev->q_workqueue = create_workqueue(ndev->name);
3710         qdev->workqueue = create_singlethread_workqueue(ndev->name);
3711         INIT_DELAYED_WORK(&qdev->asic_reset_work, ql_asic_reset_work);
3712         INIT_DELAYED_WORK(&qdev->mpi_reset_work, ql_mpi_reset_work);
3713         INIT_DELAYED_WORK(&qdev->mpi_work, ql_mpi_work);
3714
3715         if (!cards_found) {
3716                 dev_info(&pdev->dev, "%s\n", DRV_STRING);
3717                 dev_info(&pdev->dev, "Driver name: %s, Version: %s.\n",
3718                          DRV_NAME, DRV_VERSION);
3719         }
3720         return 0;
3721 err_out:
3722         ql_release_all(pdev);
3723         pci_disable_device(pdev);
3724         return err;
3725 }
3726
3727
3728 static const struct net_device_ops qlge_netdev_ops = {
3729         .ndo_open               = qlge_open,
3730         .ndo_stop               = qlge_close,
3731         .ndo_start_xmit         = qlge_send,
3732         .ndo_change_mtu         = qlge_change_mtu,
3733         .ndo_get_stats          = qlge_get_stats,
3734         .ndo_set_multicast_list = qlge_set_multicast_list,
3735         .ndo_set_mac_address    = qlge_set_mac_address,
3736         .ndo_validate_addr      = eth_validate_addr,
3737         .ndo_tx_timeout         = qlge_tx_timeout,
3738         .ndo_vlan_rx_register   = ql_vlan_rx_register,
3739         .ndo_vlan_rx_add_vid    = ql_vlan_rx_add_vid,
3740         .ndo_vlan_rx_kill_vid   = ql_vlan_rx_kill_vid,
3741 };
3742
3743 static int __devinit qlge_probe(struct pci_dev *pdev,
3744                                 const struct pci_device_id *pci_entry)
3745 {
3746         struct net_device *ndev = NULL;
3747         struct ql_adapter *qdev = NULL;
3748         static int cards_found = 0;
3749         int err = 0;
3750
3751         ndev = alloc_etherdev(sizeof(struct ql_adapter));
3752         if (!ndev)
3753                 return -ENOMEM;
3754
3755         err = ql_init_device(pdev, ndev, cards_found);
3756         if (err < 0) {
3757                 free_netdev(ndev);
3758                 return err;
3759         }
3760
3761         qdev = netdev_priv(ndev);
3762         SET_NETDEV_DEV(ndev, &pdev->dev);
3763         ndev->features = (0
3764                           | NETIF_F_IP_CSUM
3765                           | NETIF_F_SG
3766                           | NETIF_F_TSO
3767                           | NETIF_F_TSO6
3768                           | NETIF_F_TSO_ECN
3769                           | NETIF_F_HW_VLAN_TX
3770                           | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER);
3771
3772         if (test_bit(QL_DMA64, &qdev->flags))
3773                 ndev->features |= NETIF_F_HIGHDMA;
3774
3775         /*
3776          * Set up net_device structure.
3777          */
3778         ndev->tx_queue_len = qdev->tx_ring_size;
3779         ndev->irq = pdev->irq;
3780
3781         ndev->netdev_ops = &qlge_netdev_ops;
3782         SET_ETHTOOL_OPS(ndev, &qlge_ethtool_ops);
3783         ndev->watchdog_timeo = 10 * HZ;
3784
3785         err = register_netdev(ndev);
3786         if (err) {
3787                 dev_err(&pdev->dev, "net device registration failed.\n");
3788                 ql_release_all(pdev);
3789                 pci_disable_device(pdev);
3790                 return err;
3791         }
3792         netif_carrier_off(ndev);
3793         netif_stop_queue(ndev);
3794         ql_display_dev_info(ndev);
3795         cards_found++;
3796         return 0;
3797 }
3798
3799 static void __devexit qlge_remove(struct pci_dev *pdev)
3800 {
3801         struct net_device *ndev = pci_get_drvdata(pdev);
3802         unregister_netdev(ndev);
3803         ql_release_all(pdev);
3804         pci_disable_device(pdev);
3805         free_netdev(ndev);
3806 }
3807
3808 /*
3809  * This callback is called by the PCI subsystem whenever
3810  * a PCI bus error is detected.
3811  */
3812 static pci_ers_result_t qlge_io_error_detected(struct pci_dev *pdev,
3813                                                enum pci_channel_state state)
3814 {
3815         struct net_device *ndev = pci_get_drvdata(pdev);
3816         struct ql_adapter *qdev = netdev_priv(ndev);
3817
3818         if (netif_running(ndev))
3819                 ql_adapter_down(qdev);
3820
3821         pci_disable_device(pdev);
3822
3823         /* Request a slot reset. */
3824         return PCI_ERS_RESULT_NEED_RESET;
3825 }
3826
3827 /*
3828  * This callback is called after the PCI buss has been reset.
3829  * Basically, this tries to restart the card from scratch.
3830  * This is a shortened version of the device probe/discovery code,
3831  * it resembles the first-half of the () routine.
3832  */
3833 static pci_ers_result_t qlge_io_slot_reset(struct pci_dev *pdev)
3834 {
3835         struct net_device *ndev = pci_get_drvdata(pdev);
3836         struct ql_adapter *qdev = netdev_priv(ndev);
3837
3838         if (pci_enable_device(pdev)) {
3839                 QPRINTK(qdev, IFUP, ERR,
3840                         "Cannot re-enable PCI device after reset.\n");
3841                 return PCI_ERS_RESULT_DISCONNECT;
3842         }
3843
3844         pci_set_master(pdev);
3845
3846         netif_carrier_off(ndev);
3847         netif_stop_queue(ndev);
3848         ql_adapter_reset(qdev);
3849
3850         /* Make sure the EEPROM is good */
3851         memcpy(ndev->perm_addr, ndev->dev_addr, ndev->addr_len);
3852
3853         if (!is_valid_ether_addr(ndev->perm_addr)) {
3854                 QPRINTK(qdev, IFUP, ERR, "After reset, invalid MAC address.\n");
3855                 return PCI_ERS_RESULT_DISCONNECT;
3856         }
3857
3858         return PCI_ERS_RESULT_RECOVERED;
3859 }
3860
3861 static void qlge_io_resume(struct pci_dev *pdev)
3862 {
3863         struct net_device *ndev = pci_get_drvdata(pdev);
3864         struct ql_adapter *qdev = netdev_priv(ndev);
3865
3866         pci_set_master(pdev);
3867
3868         if (netif_running(ndev)) {
3869                 if (ql_adapter_up(qdev)) {
3870                         QPRINTK(qdev, IFUP, ERR,
3871                                 "Device initialization failed after reset.\n");
3872                         return;
3873                 }
3874         }
3875
3876         netif_device_attach(ndev);
3877 }
3878
3879 static struct pci_error_handlers qlge_err_handler = {
3880         .error_detected = qlge_io_error_detected,
3881         .slot_reset = qlge_io_slot_reset,
3882         .resume = qlge_io_resume,
3883 };
3884
3885 static int qlge_suspend(struct pci_dev *pdev, pm_message_t state)
3886 {
3887         struct net_device *ndev = pci_get_drvdata(pdev);
3888         struct ql_adapter *qdev = netdev_priv(ndev);
3889         int err, i;
3890
3891         netif_device_detach(ndev);
3892
3893         if (netif_running(ndev)) {
3894                 err = ql_adapter_down(qdev);
3895                 if (!err)
3896                         return err;
3897         }
3898
3899         for (i = qdev->rss_ring_first_cq_id; i < qdev->rx_ring_count; i++)
3900                 netif_napi_del(&qdev->rx_ring[i].napi);
3901
3902         err = pci_save_state(pdev);
3903         if (err)
3904                 return err;
3905
3906         pci_disable_device(pdev);
3907
3908         pci_set_power_state(pdev, pci_choose_state(pdev, state));
3909
3910         return 0;
3911 }
3912
3913 #ifdef CONFIG_PM
3914 static int qlge_resume(struct pci_dev *pdev)
3915 {
3916         struct net_device *ndev = pci_get_drvdata(pdev);
3917         struct ql_adapter *qdev = netdev_priv(ndev);
3918         int err;
3919
3920         pci_set_power_state(pdev, PCI_D0);
3921         pci_restore_state(pdev);
3922         err = pci_enable_device(pdev);
3923         if (err) {
3924                 QPRINTK(qdev, IFUP, ERR, "Cannot enable PCI device from suspend\n");
3925                 return err;
3926         }
3927         pci_set_master(pdev);
3928
3929         pci_enable_wake(pdev, PCI_D3hot, 0);
3930         pci_enable_wake(pdev, PCI_D3cold, 0);
3931
3932         if (netif_running(ndev)) {
3933                 err = ql_adapter_up(qdev);
3934                 if (err)
3935                         return err;
3936         }
3937
3938         netif_device_attach(ndev);
3939
3940         return 0;
3941 }
3942 #endif /* CONFIG_PM */
3943
3944 static void qlge_shutdown(struct pci_dev *pdev)
3945 {
3946         qlge_suspend(pdev, PMSG_SUSPEND);
3947 }
3948
3949 static struct pci_driver qlge_driver = {
3950         .name = DRV_NAME,
3951         .id_table = qlge_pci_tbl,
3952         .probe = qlge_probe,
3953         .remove = __devexit_p(qlge_remove),
3954 #ifdef CONFIG_PM
3955         .suspend = qlge_suspend,
3956         .resume = qlge_resume,
3957 #endif
3958         .shutdown = qlge_shutdown,
3959         .err_handler = &qlge_err_handler
3960 };
3961
3962 static int __init qlge_init_module(void)
3963 {
3964         return pci_register_driver(&qlge_driver);
3965 }
3966
3967 static void __exit qlge_exit(void)
3968 {
3969         pci_unregister_driver(&qlge_driver);
3970 }
3971
3972 module_init(qlge_init_module);
3973 module_exit(qlge_exit);