drivers/net/ethernet/qlogic/qla3xxx.c

   1 /*
   2  * QLogic QLA3xxx NIC HBA Driver
   3  * Copyright (c)  2003-2006 QLogic Corporation
   4  *
   5  * See LICENSE.qla3xxx for copyright and licensing details.
   6  */
   7
   8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
   9
  10 #include <linux/kernel.h>
  11 #include <linux/types.h>
  12 #include <linux/module.h>
  13 #include <linux/list.h>
  14 #include <linux/pci.h>
  15 #include <linux/dma-mapping.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/ip.h>
  26 #include <linux/in.h>
  27 #include <linux/if_arp.h>
  28 #include <linux/if_ether.h>
  29 #include <linux/netdevice.h>
  30 #include <linux/etherdevice.h>
  31 #include <linux/ethtool.h>
  32 #include <linux/skbuff.h>
  33 #include <linux/rtnetlink.h>
  34 #include <linux/if_vlan.h>
  35 #include <linux/delay.h>
  36 #include <linux/mm.h>
  37 #include <linux/prefetch.h>
  38
  39 #include "qla3xxx.h"
  40
  41 #define DRV_NAME        "qla3xxx"
  42 #define DRV_STRING      "QLogic ISP3XXX Network Driver"
  43 #define DRV_VERSION     "v2.03.00-k5"
  44
  45 static const char ql3xxx_driver_name[] = DRV_NAME;
  46 static const char ql3xxx_driver_version[] = DRV_VERSION;
  47
  48 #define TIMED_OUT_MSG                                                   \
  49 "Timed out waiting for management port to get free before issuing command\n"
  50
  51 MODULE_AUTHOR("QLogic Corporation");
  52 MODULE_DESCRIPTION("QLogic ISP3XXX Network Driver " DRV_VERSION " ");
  53 MODULE_LICENSE("GPL");
  54 MODULE_VERSION(DRV_VERSION);
  55
  56 static const u32 default_msg
  57     = NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
  58     | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
  59
  60 static int debug = -1;          /* defaults above */
  61 module_param(debug, int, 0);
  62 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  63
  64 static int msi;
  65 module_param(msi, int, 0);
  66 MODULE_PARM_DESC(msi, "Turn on Message Signaled Interrupts.");
  67
  68 static const struct pci_device_id ql3xxx_pci_tbl[] = {
  69         {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, QL3022_DEVICE_ID)},
  70         {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, QL3032_DEVICE_ID)},
  71         /* required last entry */
  72         {0,}
  73 };
  74
  75 MODULE_DEVICE_TABLE(pci, ql3xxx_pci_tbl);
  76
  77 /*
  78  *  These are the known PHY's which are used
  79  */
  80 enum PHY_DEVICE_TYPE {
  81    PHY_TYPE_UNKNOWN   = 0,
  82    PHY_VITESSE_VSC8211,
  83    PHY_AGERE_ET1011C,
  84    MAX_PHY_DEV_TYPES
  85 };
  86
  87 struct PHY_DEVICE_INFO {
  88         const enum PHY_DEVICE_TYPE      phyDevice;
  89         const u32               phyIdOUI;
  90         const u16               phyIdModel;
  91         const char              *name;
  92 };
  93
  94 static const struct PHY_DEVICE_INFO PHY_DEVICES[] = {
  95         {PHY_TYPE_UNKNOWN,    0x000000, 0x0, "PHY_TYPE_UNKNOWN"},
  96         {PHY_VITESSE_VSC8211, 0x0003f1, 0xb, "PHY_VITESSE_VSC8211"},
  97         {PHY_AGERE_ET1011C,   0x00a0bc, 0x1, "PHY_AGERE_ET1011C"},
  98 };
  99
 100
 101 /*
 102  * Caller must take hw_lock.
 103  */
 104 static int ql_sem_spinlock(struct ql3_adapter *qdev,
 105                             u32 sem_mask, u32 sem_bits)
 106 {
 107         struct ql3xxx_port_registers __iomem *port_regs =
 108                 qdev->mem_map_registers;
 109         u32 value;
 110         unsigned int seconds = 3;
 111
 112         do {
 113                 writel((sem_mask | sem_bits),
 114                        &port_regs->CommonRegs.semaphoreReg);
 115                 value = readl(&port_regs->CommonRegs.semaphoreReg);
 116                 if ((value & (sem_mask >> 16)) == sem_bits)
 117                         return 0;
 118                 ssleep(1);
 119         } while (--seconds);
 120         return -1;
 121 }
 122
 123 static void ql_sem_unlock(struct ql3_adapter *qdev, u32 sem_mask)
 124 {
 125         struct ql3xxx_port_registers __iomem *port_regs =
 126                 qdev->mem_map_registers;
 127         writel(sem_mask, &port_regs->CommonRegs.semaphoreReg);
 128         readl(&port_regs->CommonRegs.semaphoreReg);
 129 }
 130
 131 static int ql_sem_lock(struct ql3_adapter *qdev, u32 sem_mask, u32 sem_bits)
 132 {
 133         struct ql3xxx_port_registers __iomem *port_regs =
 134                 qdev->mem_map_registers;
 135         u32 value;
 136
 137         writel((sem_mask | sem_bits), &port_regs->CommonRegs.semaphoreReg);
 138         value = readl(&port_regs->CommonRegs.semaphoreReg);
 139         return ((value & (sem_mask >> 16)) == sem_bits);
 140 }
 141
 142 /*
 143  * Caller holds hw_lock.
 144  */
 145 static int ql_wait_for_drvr_lock(struct ql3_adapter *qdev)
 146 {
 147         int i = 0;
 148
 149         do {
 150                 if (ql_sem_lock(qdev,
 151                                 QL_DRVR_SEM_MASK,
 152                                 (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index)
 153                                  * 2) << 1)) {
 154                         netdev_printk(KERN_DEBUG, qdev->ndev,
 155                                       "driver lock acquired\n");
 156                         return 1;
 157                 }
 158                 ssleep(1);
 159         } while (++i < 10);
 160
 161         netdev_err(qdev->ndev, "Timed out waiting for driver lock...\n");
 162         return 0;
 163 }
 164
 165 static void ql_set_register_page(struct ql3_adapter *qdev, u32 page)
 166 {
 167         struct ql3xxx_port_registers __iomem *port_regs =
 168                 qdev->mem_map_registers;
 169
 170         writel(((ISP_CONTROL_NP_MASK << 16) | page),
 171                         &port_regs->CommonRegs.ispControlStatus);
 172         readl(&port_regs->CommonRegs.ispControlStatus);
 173         qdev->current_page = page;
 174 }
 175
 176 static u32 ql_read_common_reg_l(struct ql3_adapter *qdev, u32 __iomem *reg)
 177 {
 178         u32 value;
 179         unsigned long hw_flags;
 180
 181         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
 182         value = readl(reg);
 183         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
 184
 185         return value;
 186 }
 187
 188 static u32 ql_read_common_reg(struct ql3_adapter *qdev, u32 __iomem *reg)
 189 {
 190         return readl(reg);
 191 }
 192
 193 static u32 ql_read_page0_reg_l(struct ql3_adapter *qdev, u32 __iomem *reg)
 194 {
 195         u32 value;
 196         unsigned long hw_flags;
 197
 198         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
 199
 200         if (qdev->current_page != 0)
 201                 ql_set_register_page(qdev, 0);
 202         value = readl(reg);
 203
 204         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
 205         return value;
 206 }
 207
 208 static u32 ql_read_page0_reg(struct ql3_adapter *qdev, u32 __iomem *reg)
 209 {
 210         if (qdev->current_page != 0)
 211                 ql_set_register_page(qdev, 0);
 212         return readl(reg);
 213 }
 214
 215 static void ql_write_common_reg_l(struct ql3_adapter *qdev,
 216                                 u32 __iomem *reg, u32 value)
 217 {
 218         unsigned long hw_flags;
 219
 220         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
 221         writel(value, reg);
 222         readl(reg);
 223         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
 224 }
 225
 226 static void ql_write_common_reg(struct ql3_adapter *qdev,
 227                                 u32 __iomem *reg, u32 value)
 228 {
 229         writel(value, reg);
 230         readl(reg);
 231 }
 232
 233 static void ql_write_nvram_reg(struct ql3_adapter *qdev,
 234                                 u32 __iomem *reg, u32 value)
 235 {
 236         writel(value, reg);
 237         readl(reg);
 238         udelay(1);
 239 }
 240
 241 static void ql_write_page0_reg(struct ql3_adapter *qdev,
 242                                u32 __iomem *reg, u32 value)
 243 {
 244         if (qdev->current_page != 0)
 245                 ql_set_register_page(qdev, 0);
 246         writel(value, reg);
 247         readl(reg);
 248 }
 249
 250 /*
 251  * Caller holds hw_lock. Only called during init.
 252  */
 253 static void ql_write_page1_reg(struct ql3_adapter *qdev,
 254                                u32 __iomem *reg, u32 value)
 255 {
 256         if (qdev->current_page != 1)
 257                 ql_set_register_page(qdev, 1);
 258         writel(value, reg);
 259         readl(reg);
 260 }
 261
 262 /*
 263  * Caller holds hw_lock. Only called during init.
 264  */
 265 static void ql_write_page2_reg(struct ql3_adapter *qdev,
 266                                u32 __iomem *reg, u32 value)
 267 {
 268         if (qdev->current_page != 2)
 269                 ql_set_register_page(qdev, 2);
 270         writel(value, reg);
 271         readl(reg);
 272 }
 273
 274 static void ql_disable_interrupts(struct ql3_adapter *qdev)
 275 {
 276         struct ql3xxx_port_registers __iomem *port_regs =
 277                 qdev->mem_map_registers;
 278
 279         ql_write_common_reg_l(qdev, &port_regs->CommonRegs.ispInterruptMaskReg,
 280                             (ISP_IMR_ENABLE_INT << 16));
 281
 282 }
 283
 284 static void ql_enable_interrupts(struct ql3_adapter *qdev)
 285 {
 286         struct ql3xxx_port_registers __iomem *port_regs =
 287                 qdev->mem_map_registers;
 288
 289         ql_write_common_reg_l(qdev, &port_regs->CommonRegs.ispInterruptMaskReg,
 290                             ((0xff << 16) | ISP_IMR_ENABLE_INT));
 291
 292 }
 293
 294 static void ql_release_to_lrg_buf_free_list(struct ql3_adapter *qdev,
 295                                             struct ql_rcv_buf_cb *lrg_buf_cb)
 296 {
 297         dma_addr_t map;
 298         int err;
 299         lrg_buf_cb->next = NULL;
 300
 301         if (qdev->lrg_buf_free_tail == NULL) {  /* The list is empty  */
 302                 qdev->lrg_buf_free_head = qdev->lrg_buf_free_tail = lrg_buf_cb;
 303         } else {
 304                 qdev->lrg_buf_free_tail->next = lrg_buf_cb;
 305                 qdev->lrg_buf_free_tail = lrg_buf_cb;
 306         }
 307
 308         if (!lrg_buf_cb->skb) {
 309                 lrg_buf_cb->skb = netdev_alloc_skb(qdev->ndev,
 310                                                    qdev->lrg_buffer_len);
 311                 if (unlikely(!lrg_buf_cb->skb)) {
 312                         qdev->lrg_buf_skb_check++;
 313                 } else {
 314                         /*
 315                          * We save some space to copy the ethhdr from first
 316                          * buffer
 317                          */
 318                         skb_reserve(lrg_buf_cb->skb, QL_HEADER_SPACE);
 319                         map = pci_map_single(qdev->pdev,
 320                                              lrg_buf_cb->skb->data,
 321                                              qdev->lrg_buffer_len -
 322                                              QL_HEADER_SPACE,
 323                                              PCI_DMA_FROMDEVICE);
 324                         err = pci_dma_mapping_error(qdev->pdev, map);
 325                         if (err) {
 326                                 netdev_err(qdev->ndev,
 327                                            "PCI mapping failed with error: %d\n",
 328                                            err);
 329                                 dev_kfree_skb(lrg_buf_cb->skb);
 330                                 lrg_buf_cb->skb = NULL;
 331
 332                                 qdev->lrg_buf_skb_check++;
 333                                 return;
 334                         }
 335
 336                         lrg_buf_cb->buf_phy_addr_low =
 337                             cpu_to_le32(LS_64BITS(map));
 338                         lrg_buf_cb->buf_phy_addr_high =
 339                             cpu_to_le32(MS_64BITS(map));
 340                         dma_unmap_addr_set(lrg_buf_cb, mapaddr, map);
 341                         dma_unmap_len_set(lrg_buf_cb, maplen,
 342                                           qdev->lrg_buffer_len -
 343                                           QL_HEADER_SPACE);
 344                 }
 345         }
 346
 347         qdev->lrg_buf_free_count++;
 348 }
 349
 350 static struct ql_rcv_buf_cb *ql_get_from_lrg_buf_free_list(struct ql3_adapter
 351                                                            *qdev)
 352 {
 353         struct ql_rcv_buf_cb *lrg_buf_cb = qdev->lrg_buf_free_head;
 354
 355         if (lrg_buf_cb != NULL) {
 356                 qdev->lrg_buf_free_head = lrg_buf_cb->next;
 357                 if (qdev->lrg_buf_free_head == NULL)
 358                         qdev->lrg_buf_free_tail = NULL;
 359                 qdev->lrg_buf_free_count--;
 360         }
 361
 362         return lrg_buf_cb;
 363 }
 364
 365 static u32 addrBits = EEPROM_NO_ADDR_BITS;
 366 static u32 dataBits = EEPROM_NO_DATA_BITS;
 367
 368 static void fm93c56a_deselect(struct ql3_adapter *qdev);
 369 static void eeprom_readword(struct ql3_adapter *qdev, u32 eepromAddr,
 370                             unsigned short *value);
 371
 372 /*
 373  * Caller holds hw_lock.
 374  */
 375 static void fm93c56a_select(struct ql3_adapter *qdev)
 376 {
 377         struct ql3xxx_port_registers __iomem *port_regs =
 378                         qdev->mem_map_registers;
 379         __iomem u32 *spir = &port_regs->CommonRegs.serialPortInterfaceReg;
 380
 381         qdev->eeprom_cmd_data = AUBURN_EEPROM_CS_1;
 382         ql_write_nvram_reg(qdev, spir, ISP_NVRAM_MASK | qdev->eeprom_cmd_data);
 383 }
 384
 385 /*
 386  * Caller holds hw_lock.
 387  */
 388 static void fm93c56a_cmd(struct ql3_adapter *qdev, u32 cmd, u32 eepromAddr)
 389 {
 390         int i;
 391         u32 mask;
 392         u32 dataBit;
 393         u32 previousBit;
 394         struct ql3xxx_port_registers __iomem *port_regs =
 395                         qdev->mem_map_registers;
 396         __iomem u32 *spir = &port_regs->CommonRegs.serialPortInterfaceReg;
 397
 398         /* Clock in a zero, then do the start bit */
 399         ql_write_nvram_reg(qdev, spir,
 400                            (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
 401                             AUBURN_EEPROM_DO_1));
 402         ql_write_nvram_reg(qdev, spir,
 403                            (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
 404                             AUBURN_EEPROM_DO_1 | AUBURN_EEPROM_CLK_RISE));
 405         ql_write_nvram_reg(qdev, spir,
 406                            (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
 407                             AUBURN_EEPROM_DO_1 | AUBURN_EEPROM_CLK_FALL));
 408
 409         mask = 1 << (FM93C56A_CMD_BITS - 1);
 410         /* Force the previous data bit to be different */
 411         previousBit = 0xffff;
 412         for (i = 0; i < FM93C56A_CMD_BITS; i++) {
 413                 dataBit = (cmd & mask)
 414                         ? AUBURN_EEPROM_DO_1
 415                         : AUBURN_EEPROM_DO_0;
 416                 if (previousBit != dataBit) {
 417                         /* If the bit changed, change the DO state to match */
 418                         ql_write_nvram_reg(qdev, spir,
 419                                            (ISP_NVRAM_MASK |
 420                                             qdev->eeprom_cmd_data | dataBit));
 421                         previousBit = dataBit;
 422                 }
 423                 ql_write_nvram_reg(qdev, spir,
 424                                    (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
 425                                     dataBit | AUBURN_EEPROM_CLK_RISE));
 426                 ql_write_nvram_reg(qdev, spir,
 427                                    (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
 428                                     dataBit | AUBURN_EEPROM_CLK_FALL));
 429                 cmd = cmd << 1;
 430         }
 431
 432         mask = 1 << (addrBits - 1);
 433         /* Force the previous data bit to be different */
 434         previousBit = 0xffff;
 435         for (i = 0; i < addrBits; i++) {
 436                 dataBit = (eepromAddr & mask) ? AUBURN_EEPROM_DO_1
 437                         : AUBURN_EEPROM_DO_0;
 438                 if (previousBit != dataBit) {
 439                         /*
 440                          * If the bit changed, then change the DO state to
 441                          * match
 442                          */
 443                         ql_write_nvram_reg(qdev, spir,
 444                                            (ISP_NVRAM_MASK |
 445                                             qdev->eeprom_cmd_data | dataBit));
 446                         previousBit = dataBit;
 447                 }
 448                 ql_write_nvram_reg(qdev, spir,
 449                                    (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
 450                                     dataBit | AUBURN_EEPROM_CLK_RISE));
 451                 ql_write_nvram_reg(qdev, spir,
 452                                    (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
 453                                     dataBit | AUBURN_EEPROM_CLK_FALL));
 454                 eepromAddr = eepromAddr << 1;
 455         }
 456 }
 457
 458 /*
 459  * Caller holds hw_lock.
 460  */
 461 static void fm93c56a_deselect(struct ql3_adapter *qdev)
 462 {
 463         struct ql3xxx_port_registers __iomem *port_regs =
 464                         qdev->mem_map_registers;
 465         __iomem u32 *spir = &port_regs->CommonRegs.serialPortInterfaceReg;
 466
 467         qdev->eeprom_cmd_data = AUBURN_EEPROM_CS_0;
 468         ql_write_nvram_reg(qdev, spir, ISP_NVRAM_MASK | qdev->eeprom_cmd_data);
 469 }
 470
 471 /*
 472  * Caller holds hw_lock.
 473  */
 474 static void fm93c56a_datain(struct ql3_adapter *qdev, unsigned short *value)
 475 {
 476         int i;
 477         u32 data = 0;
 478         u32 dataBit;
 479         struct ql3xxx_port_registers __iomem *port_regs =
 480                         qdev->mem_map_registers;
 481         __iomem u32 *spir = &port_regs->CommonRegs.serialPortInterfaceReg;
 482
 483         /* Read the data bits */
 484         /* The first bit is a dummy.  Clock right over it. */
 485         for (i = 0; i < dataBits; i++) {
 486                 ql_write_nvram_reg(qdev, spir,
 487                                    ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
 488                                    AUBURN_EEPROM_CLK_RISE);
 489                 ql_write_nvram_reg(qdev, spir,
 490                                    ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
 491                                    AUBURN_EEPROM_CLK_FALL);
 492                 dataBit = (ql_read_common_reg(qdev, spir) &
 493                            AUBURN_EEPROM_DI_1) ? 1 : 0;
 494                 data = (data << 1) | dataBit;
 495         }
 496         *value = (u16)data;
 497 }
 498
 499 /*
 500  * Caller holds hw_lock.
 501  */
 502 static void eeprom_readword(struct ql3_adapter *qdev,
 503                             u32 eepromAddr, unsigned short *value)
 504 {
 505         fm93c56a_select(qdev);
 506         fm93c56a_cmd(qdev, (int)FM93C56A_READ, eepromAddr);
 507         fm93c56a_datain(qdev, value);
 508         fm93c56a_deselect(qdev);
 509 }
 510
 511 static void ql_set_mac_addr(struct net_device *ndev, u16 *addr)
 512 {
 513         __le16 *p = (__le16 *)ndev->dev_addr;
 514         p[0] = cpu_to_le16(addr[0]);
 515         p[1] = cpu_to_le16(addr[1]);
 516         p[2] = cpu_to_le16(addr[2]);
 517 }
 518
 519 static int ql_get_nvram_params(struct ql3_adapter *qdev)
 520 {
 521         u16 *pEEPROMData;
 522         u16 checksum = 0;
 523         u32 index;
 524         unsigned long hw_flags;
 525
 526         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
 527
 528         pEEPROMData = (u16 *)&qdev->nvram_data;
 529         qdev->eeprom_cmd_data = 0;
 530         if (ql_sem_spinlock(qdev, QL_NVRAM_SEM_MASK,
 531                         (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index) *
 532                          2) << 10)) {
 533                 pr_err("%s: Failed ql_sem_spinlock()\n", __func__);
 534                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
 535                 return -1;
 536         }
 537
 538         for (index = 0; index < EEPROM_SIZE; index++) {
 539                 eeprom_readword(qdev, index, pEEPROMData);
 540                 checksum += *pEEPROMData;
 541                 pEEPROMData++;
 542         }
 543         ql_sem_unlock(qdev, QL_NVRAM_SEM_MASK);
 544
 545         if (checksum != 0) {
 546                 netdev_err(qdev->ndev, "checksum should be zero, is %x!!\n",
 547                            checksum);
 548                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
 549                 return -1;
 550         }
 551
 552         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
 553         return checksum;
 554 }
 555
 556 static const u32 PHYAddr[2] = {
 557         PORT0_PHY_ADDRESS, PORT1_PHY_ADDRESS
 558 };
 559
 560 static int ql_wait_for_mii_ready(struct ql3_adapter *qdev)
 561 {
 562         struct ql3xxx_port_registers __iomem *port_regs =
 563                         qdev->mem_map_registers;
 564         u32 temp;
 565         int count = 1000;
 566
 567         while (count) {
 568                 temp = ql_read_page0_reg(qdev, &port_regs->macMIIStatusReg);
 569                 if (!(temp & MAC_MII_STATUS_BSY))
 570                         return 0;
 571                 udelay(10);
 572                 count--;
 573         }
 574         return -1;
 575 }
 576
 577 static void ql_mii_enable_scan_mode(struct ql3_adapter *qdev)
 578 {
 579         struct ql3xxx_port_registers __iomem *port_regs =
 580                         qdev->mem_map_registers;
 581         u32 scanControl;
 582
 583         if (qdev->numPorts > 1) {
 584                 /* Auto scan will cycle through multiple ports */
 585                 scanControl = MAC_MII_CONTROL_AS | MAC_MII_CONTROL_SC;
 586         } else {
 587                 scanControl = MAC_MII_CONTROL_SC;
 588         }
 589
 590         /*
 591          * Scan register 1 of PHY/PETBI,
 592          * Set up to scan both devices
 593          * The autoscan starts from the first register, completes
 594          * the last one before rolling over to the first
 595          */
 596         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
 597                            PHYAddr[0] | MII_SCAN_REGISTER);
 598
 599         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
 600                            (scanControl) |
 601                            ((MAC_MII_CONTROL_SC | MAC_MII_CONTROL_AS) << 16));
 602 }
 603
 604 static u8 ql_mii_disable_scan_mode(struct ql3_adapter *qdev)
 605 {
 606         u8 ret;
 607         struct ql3xxx_port_registers __iomem *port_regs =
 608                                         qdev->mem_map_registers;
 609
 610         /* See if scan mode is enabled before we turn it off */
 611         if (ql_read_page0_reg(qdev, &port_regs->macMIIMgmtControlReg) &
 612             (MAC_MII_CONTROL_AS | MAC_MII_CONTROL_SC)) {
 613                 /* Scan is enabled */
 614                 ret = 1;
 615         } else {
 616                 /* Scan is disabled */
 617                 ret = 0;
 618         }
 619
 620         /*
 621          * When disabling scan mode you must first change the MII register
 622          * address
 623          */
 624         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
 625                            PHYAddr[0] | MII_SCAN_REGISTER);
 626
 627         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
 628                            ((MAC_MII_CONTROL_SC | MAC_MII_CONTROL_AS |
 629                              MAC_MII_CONTROL_RC) << 16));
 630
 631         return ret;
 632 }
 633
 634 static int ql_mii_write_reg_ex(struct ql3_adapter *qdev,
 635                                u16 regAddr, u16 value, u32 phyAddr)
 636 {
 637         struct ql3xxx_port_registers __iomem *port_regs =
 638                         qdev->mem_map_registers;
 639         u8 scanWasEnabled;
 640
 641         scanWasEnabled = ql_mii_disable_scan_mode(qdev);
 642
 643         if (ql_wait_for_mii_ready(qdev)) {
 644                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
 645                 return -1;
 646         }
 647
 648         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
 649                            phyAddr | regAddr);
 650
 651         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtDataReg, value);
 652
 653         /* Wait for write to complete 9/10/04 SJP */
 654         if (ql_wait_for_mii_ready(qdev)) {
 655                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
 656                 return -1;
 657         }
 658
 659         if (scanWasEnabled)
 660                 ql_mii_enable_scan_mode(qdev);
 661
 662         return 0;
 663 }
 664
 665 static int ql_mii_read_reg_ex(struct ql3_adapter *qdev, u16 regAddr,
 666                               u16 *value, u32 phyAddr)
 667 {
 668         struct ql3xxx_port_registers __iomem *port_regs =
 669                         qdev->mem_map_registers;
 670         u8 scanWasEnabled;
 671         u32 temp;
 672
 673         scanWasEnabled = ql_mii_disable_scan_mode(qdev);
 674
 675         if (ql_wait_for_mii_ready(qdev)) {
 676                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
 677                 return -1;
 678         }
 679
 680         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
 681                            phyAddr | regAddr);
 682
 683         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
 684                            (MAC_MII_CONTROL_RC << 16));
 685
 686         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
 687                            (MAC_MII_CONTROL_RC << 16) | MAC_MII_CONTROL_RC);
 688
 689         /* Wait for the read to complete */
 690         if (ql_wait_for_mii_ready(qdev)) {
 691                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
 692                 return -1;
 693         }
 694
 695         temp = ql_read_page0_reg(qdev, &port_regs->macMIIMgmtDataReg);
 696         *value = (u16) temp;
 697
 698         if (scanWasEnabled)
 699                 ql_mii_enable_scan_mode(qdev);
 700
 701         return 0;
 702 }
 703
 704 static int ql_mii_write_reg(struct ql3_adapter *qdev, u16 regAddr, u16 value)
 705 {
 706         struct ql3xxx_port_registers __iomem *port_regs =
 707                         qdev->mem_map_registers;
 708
 709         ql_mii_disable_scan_mode(qdev);
 710
 711         if (ql_wait_for_mii_ready(qdev)) {
 712                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
 713                 return -1;
 714         }
 715
 716         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
 717                            qdev->PHYAddr | regAddr);
 718
 719         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtDataReg, value);
 720
 721         /* Wait for write to complete. */
 722         if (ql_wait_for_mii_ready(qdev)) {
 723                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
 724                 return -1;
 725         }
 726
 727         ql_mii_enable_scan_mode(qdev);
 728
 729         return 0;
 730 }
 731
 732 static int ql_mii_read_reg(struct ql3_adapter *qdev, u16 regAddr, u16 *value)
 733 {
 734         u32 temp;
 735         struct ql3xxx_port_registers __iomem *port_regs =
 736                         qdev->mem_map_registers;
 737
 738         ql_mii_disable_scan_mode(qdev);
 739
 740         if (ql_wait_for_mii_ready(qdev)) {
 741                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
 742                 return -1;
 743         }
 744
 745         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
 746                            qdev->PHYAddr | regAddr);
 747
 748         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
 749                            (MAC_MII_CONTROL_RC << 16));
 750
 751         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
 752                            (MAC_MII_CONTROL_RC << 16) | MAC_MII_CONTROL_RC);
 753
 754         /* Wait for the read to complete */
 755         if (ql_wait_for_mii_ready(qdev)) {
 756                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
 757                 return -1;
 758         }
 759
 760         temp = ql_read_page0_reg(qdev, &port_regs->macMIIMgmtDataReg);
 761         *value = (u16) temp;
 762
 763         ql_mii_enable_scan_mode(qdev);
 764
 765         return 0;
 766 }
 767
 768 static void ql_petbi_reset(struct ql3_adapter *qdev)
 769 {
 770         ql_mii_write_reg(qdev, PETBI_CONTROL_REG, PETBI_CTRL_SOFT_RESET);
 771 }
 772
 773 static void ql_petbi_start_neg(struct ql3_adapter *qdev)
 774 {
 775         u16 reg;
 776
 777         /* Enable Auto-negotiation sense */
 778         ql_mii_read_reg(qdev, PETBI_TBI_CTRL, &reg);
 779         reg |= PETBI_TBI_AUTO_SENSE;
 780         ql_mii_write_reg(qdev, PETBI_TBI_CTRL, reg);
 781
 782         ql_mii_write_reg(qdev, PETBI_NEG_ADVER,
 783                          PETBI_NEG_PAUSE | PETBI_NEG_DUPLEX);
 784
 785         ql_mii_write_reg(qdev, PETBI_CONTROL_REG,
 786                          PETBI_CTRL_AUTO_NEG | PETBI_CTRL_RESTART_NEG |
 787                          PETBI_CTRL_FULL_DUPLEX | PETBI_CTRL_SPEED_1000);
 788
 789 }
 790
 791 static void ql_petbi_reset_ex(struct ql3_adapter *qdev)
 792 {
 793         ql_mii_write_reg_ex(qdev, PETBI_CONTROL_REG, PETBI_CTRL_SOFT_RESET,
 794                             PHYAddr[qdev->mac_index]);
 795 }
 796
 797 static void ql_petbi_start_neg_ex(struct ql3_adapter *qdev)
 798 {
 799         u16 reg;
 800
 801         /* Enable Auto-negotiation sense */
 802         ql_mii_read_reg_ex(qdev, PETBI_TBI_CTRL, &reg,
 803                            PHYAddr[qdev->mac_index]);
 804         reg |= PETBI_TBI_AUTO_SENSE;
 805         ql_mii_write_reg_ex(qdev, PETBI_TBI_CTRL, reg,
 806                             PHYAddr[qdev->mac_index]);
 807
 808         ql_mii_write_reg_ex(qdev, PETBI_NEG_ADVER,
 809                             PETBI_NEG_PAUSE | PETBI_NEG_DUPLEX,
 810                             PHYAddr[qdev->mac_index]);
 811
 812         ql_mii_write_reg_ex(qdev, PETBI_CONTROL_REG,
 813                             PETBI_CTRL_AUTO_NEG | PETBI_CTRL_RESTART_NEG |
 814                             PETBI_CTRL_FULL_DUPLEX | PETBI_CTRL_SPEED_1000,
 815                             PHYAddr[qdev->mac_index]);
 816 }
 817
 818 static void ql_petbi_init(struct ql3_adapter *qdev)
 819 {
 820         ql_petbi_reset(qdev);
 821         ql_petbi_start_neg(qdev);
 822 }
 823
 824 static void ql_petbi_init_ex(struct ql3_adapter *qdev)
 825 {
 826         ql_petbi_reset_ex(qdev);
 827         ql_petbi_start_neg_ex(qdev);
 828 }
 829
 830 static int ql_is_petbi_neg_pause(struct ql3_adapter *qdev)
 831 {
 832         u16 reg;
 833
 834         if (ql_mii_read_reg(qdev, PETBI_NEG_PARTNER, &reg) < 0)
 835                 return 0;
 836
 837         return (reg & PETBI_NEG_PAUSE_MASK) == PETBI_NEG_PAUSE;
 838 }
 839
 840 static void phyAgereSpecificInit(struct ql3_adapter *qdev, u32 miiAddr)
 841 {
 842         netdev_info(qdev->ndev, "enabling Agere specific PHY\n");
 843         /* power down device bit 11 = 1 */
 844         ql_mii_write_reg_ex(qdev, 0x00, 0x1940, miiAddr);
 845         /* enable diagnostic mode bit 2 = 1 */
 846         ql_mii_write_reg_ex(qdev, 0x12, 0x840e, miiAddr);
 847         /* 1000MB amplitude adjust (see Agere errata) */
 848         ql_mii_write_reg_ex(qdev, 0x10, 0x8805, miiAddr);
 849         /* 1000MB amplitude adjust (see Agere errata) */
 850         ql_mii_write_reg_ex(qdev, 0x11, 0xf03e, miiAddr);
 851         /* 100MB amplitude adjust (see Agere errata) */
 852         ql_mii_write_reg_ex(qdev, 0x10, 0x8806, miiAddr);
 853         /* 100MB amplitude adjust (see Agere errata) */
 854         ql_mii_write_reg_ex(qdev, 0x11, 0x003e, miiAddr);
 855         /* 10MB amplitude adjust (see Agere errata) */
 856         ql_mii_write_reg_ex(qdev, 0x10, 0x8807, miiAddr);
 857         /* 10MB amplitude adjust (see Agere errata) */
 858         ql_mii_write_reg_ex(qdev, 0x11, 0x1f00, miiAddr);
 859         /* point to hidden reg 0x2806 */
 860         ql_mii_write_reg_ex(qdev, 0x10, 0x2806, miiAddr);
 861         /* Write new PHYAD w/bit 5 set */
 862         ql_mii_write_reg_ex(qdev, 0x11,
 863                             0x0020 | (PHYAddr[qdev->mac_index] >> 8), miiAddr);
 864         /*
 865          * Disable diagnostic mode bit 2 = 0
 866          * Power up device bit 11 = 0
 867          * Link up (on) and activity (blink)
 868          */
 869         ql_mii_write_reg(qdev, 0x12, 0x840a);
 870         ql_mii_write_reg(qdev, 0x00, 0x1140);
 871         ql_mii_write_reg(qdev, 0x1c, 0xfaf0);
 872 }
 873
 874 static enum PHY_DEVICE_TYPE getPhyType(struct ql3_adapter *qdev,
 875                                        u16 phyIdReg0, u16 phyIdReg1)
 876 {
 877         enum PHY_DEVICE_TYPE result = PHY_TYPE_UNKNOWN;
 878         u32   oui;
 879         u16   model;
 880         int i;
 881
 882         if (phyIdReg0 == 0xffff)
 883                 return result;
 884
 885         if (phyIdReg1 == 0xffff)
 886                 return result;
 887
 888         /* oui is split between two registers */
 889         oui = (phyIdReg0 << 6) | ((phyIdReg1 & PHY_OUI_1_MASK) >> 10);
 890
 891         model = (phyIdReg1 & PHY_MODEL_MASK) >> 4;
 892
 893         /* Scan table for this PHY */
 894         for (i = 0; i < MAX_PHY_DEV_TYPES; i++) {
 895                 if ((oui == PHY_DEVICES[i].phyIdOUI) &&
 896                     (model == PHY_DEVICES[i].phyIdModel)) {
 897                         netdev_info(qdev->ndev, "Phy: %s\n",
 898                                     PHY_DEVICES[i].name);
 899                         result = PHY_DEVICES[i].phyDevice;
 900                         break;
 901                 }
 902         }
 903
 904         return result;
 905 }
 906
 907 static int ql_phy_get_speed(struct ql3_adapter *qdev)
 908 {
 909         u16 reg;
 910
 911         switch (qdev->phyType) {
 912         case PHY_AGERE_ET1011C: {
 913                 if (ql_mii_read_reg(qdev, 0x1A, &reg) < 0)
 914                         return 0;
 915
 916                 reg = (reg >> 8) & 3;
 917                 break;
 918         }
 919         default:
 920                 if (ql_mii_read_reg(qdev, AUX_CONTROL_STATUS, &reg) < 0)
 921                         return 0;
 922
 923                 reg = (((reg & 0x18) >> 3) & 3);
 924         }
 925
 926         switch (reg) {
 927         case 2:
 928                 return SPEED_1000;
 929         case 1:
 930                 return SPEED_100;
 931         case 0:
 932                 return SPEED_10;
 933         default:
 934                 return -1;
 935         }
 936 }
 937
 938 static int ql_is_full_dup(struct ql3_adapter *qdev)
 939 {
 940         u16 reg;
 941
 942         switch (qdev->phyType) {
 943         case PHY_AGERE_ET1011C: {
 944                 if (ql_mii_read_reg(qdev, 0x1A, &reg))
 945                         return 0;
 946
 947                 return ((reg & 0x0080) && (reg & 0x1000)) != 0;
 948         }
 949         case PHY_VITESSE_VSC8211:
 950         default: {
 951                 if (ql_mii_read_reg(qdev, AUX_CONTROL_STATUS, &reg) < 0)
 952                         return 0;
 953                 return (reg & PHY_AUX_DUPLEX_STAT) != 0;
 954         }
 955         }
 956 }
 957
 958 static int ql_is_phy_neg_pause(struct ql3_adapter *qdev)
 959 {
 960         u16 reg;
 961
 962         if (ql_mii_read_reg(qdev, PHY_NEG_PARTNER, &reg) < 0)
 963                 return 0;
 964
 965         return (reg & PHY_NEG_PAUSE) != 0;
 966 }
 967
 968 static int PHY_Setup(struct ql3_adapter *qdev)
 969 {
 970         u16   reg1;
 971         u16   reg2;
 972         bool  agereAddrChangeNeeded = false;
 973         u32 miiAddr = 0;
 974         int err;
 975
 976         /*  Determine the PHY we are using by reading the ID's */
 977         err = ql_mii_read_reg(qdev, PHY_ID_0_REG, &reg1);
 978         if (err != 0) {
 979                 netdev_err(qdev->ndev, "Could not read from reg PHY_ID_0_REG\n");
 980                 return err;
 981         }
 982
 983         err = ql_mii_read_reg(qdev, PHY_ID_1_REG, &reg2);
 984         if (err != 0) {
 985                 netdev_err(qdev->ndev, "Could not read from reg PHY_ID_1_REG\n");
 986                 return err;
 987         }
 988
 989         /*  Check if we have a Agere PHY */
 990         if ((reg1 == 0xffff) || (reg2 == 0xffff)) {
 991
 992                 /* Determine which MII address we should be using
 993                    determined by the index of the card */
 994                 if (qdev->mac_index == 0)
 995                         miiAddr = MII_AGERE_ADDR_1;
 996                 else
 997                         miiAddr = MII_AGERE_ADDR_2;
 998
 999                 err = ql_mii_read_reg_ex(qdev, PHY_ID_0_REG, &reg1, miiAddr);
1000                 if (err != 0) {
1001                         netdev_err(qdev->ndev,
1002                                    "Could not read from reg PHY_ID_0_REG after Agere detected\n");
1003                         return err;
1004                 }
1005
1006                 err = ql_mii_read_reg_ex(qdev, PHY_ID_1_REG, &reg2, miiAddr);
1007                 if (err != 0) {
1008                         netdev_err(qdev->ndev, "Could not read from reg PHY_ID_1_REG after Agere detected\n");
1009                         return err;
1010                 }
1011
1012                 /*  We need to remember to initialize the Agere PHY */
1013                 agereAddrChangeNeeded = true;
1014         }
1015
1016         /*  Determine the particular PHY we have on board to apply
1017             PHY specific initializations */
1018         qdev->phyType = getPhyType(qdev, reg1, reg2);
1019
1020         if ((qdev->phyType == PHY_AGERE_ET1011C) && agereAddrChangeNeeded) {
1021                 /* need this here so address gets changed */
1022                 phyAgereSpecificInit(qdev, miiAddr);
1023         } else if (qdev->phyType == PHY_TYPE_UNKNOWN) {
1024                 netdev_err(qdev->ndev, "PHY is unknown\n");
1025                 return -EIO;
1026         }
1027
1028         return 0;
1029 }
1030
1031 /*
1032  * Caller holds hw_lock.
1033  */
1034 static void ql_mac_enable(struct ql3_adapter *qdev, u32 enable)
1035 {
1036         struct ql3xxx_port_registers __iomem *port_regs =
1037                         qdev->mem_map_registers;
1038         u32 value;
1039
1040         if (enable)
1041                 value = (MAC_CONFIG_REG_PE | (MAC_CONFIG_REG_PE << 16));
1042         else
1043                 value = (MAC_CONFIG_REG_PE << 16);
1044
1045         if (qdev->mac_index)
1046                 ql_write_page0_reg(qdev, &port_regs->mac1ConfigReg, value);
1047         else
1048                 ql_write_page0_reg(qdev, &port_regs->mac0ConfigReg, value);
1049 }
1050
1051 /*
1052  * Caller holds hw_lock.
1053  */
1054 static void ql_mac_cfg_soft_reset(struct ql3_adapter *qdev, u32 enable)
1055 {
1056         struct ql3xxx_port_registers __iomem *port_regs =
1057                         qdev->mem_map_registers;
1058         u32 value;
1059
1060         if (enable)
1061                 value = (MAC_CONFIG_REG_SR | (MAC_CONFIG_REG_SR << 16));
1062         else
1063                 value = (MAC_CONFIG_REG_SR << 16);
1064
1065         if (qdev->mac_index)
1066                 ql_write_page0_reg(qdev, &port_regs->mac1ConfigReg, value);
1067         else
1068                 ql_write_page0_reg(qdev, &port_regs->mac0ConfigReg, value);
1069 }
1070
1071 /*
1072  * Caller holds hw_lock.
1073  */
1074 static void ql_mac_cfg_gig(struct ql3_adapter *qdev, u32 enable)
1075 {
1076         struct ql3xxx_port_registers __iomem *port_regs =
1077                         qdev->mem_map_registers;
1078         u32 value;
1079
1080         if (enable)
1081                 value = (MAC_CONFIG_REG_GM | (MAC_CONFIG_REG_GM << 16));
1082         else
1083                 value = (MAC_CONFIG_REG_GM << 16);
1084
1085         if (qdev->mac_index)
1086                 ql_write_page0_reg(qdev, &port_regs->mac1ConfigReg, value);
1087         else
1088                 ql_write_page0_reg(qdev, &port_regs->mac0ConfigReg, value);
1089 }
1090
1091 /*
1092  * Caller holds hw_lock.
1093  */
1094 static void ql_mac_cfg_full_dup(struct ql3_adapter *qdev, u32 enable)
1095 {
1096         struct ql3xxx_port_registers __iomem *port_regs =
1097                         qdev->mem_map_registers;
1098         u32 value;
1099
1100         if (enable)
1101                 value = (MAC_CONFIG_REG_FD | (MAC_CONFIG_REG_FD << 16));
1102         else
1103                 value = (MAC_CONFIG_REG_FD << 16);
1104
1105         if (qdev->mac_index)
1106                 ql_write_page0_reg(qdev, &port_regs->mac1ConfigReg, value);
1107         else
1108                 ql_write_page0_reg(qdev, &port_regs->mac0ConfigReg, value);
1109 }
1110
1111 /*
1112  * Caller holds hw_lock.
1113  */
1114 static void ql_mac_cfg_pause(struct ql3_adapter *qdev, u32 enable)
1115 {
1116         struct ql3xxx_port_registers __iomem *port_regs =
1117                         qdev->mem_map_registers;
1118         u32 value;
1119
1120         if (enable)
1121                 value =
1122                     ((MAC_CONFIG_REG_TF | MAC_CONFIG_REG_RF) |
1123                      ((MAC_CONFIG_REG_TF | MAC_CONFIG_REG_RF) << 16));
1124         else
1125                 value = ((MAC_CONFIG_REG_TF | MAC_CONFIG_REG_RF) << 16);
1126
1127         if (qdev->mac_index)
1128                 ql_write_page0_reg(qdev, &port_regs->mac1ConfigReg, value);
1129         else
1130                 ql_write_page0_reg(qdev, &port_regs->mac0ConfigReg, value);
1131 }
1132
1133 /*
1134  * Caller holds hw_lock.
1135  */
1136 static int ql_is_fiber(struct ql3_adapter *qdev)
1137 {
1138         struct ql3xxx_port_registers __iomem *port_regs =
1139                         qdev->mem_map_registers;
1140         u32 bitToCheck = 0;
1141         u32 temp;
1142
1143         switch (qdev->mac_index) {
1144         case 0:
1145                 bitToCheck = PORT_STATUS_SM0;
1146                 break;
1147         case 1:
1148                 bitToCheck = PORT_STATUS_SM1;
1149                 break;
1150         }
1151
1152         temp = ql_read_page0_reg(qdev, &port_regs->portStatus);
1153         return (temp & bitToCheck) != 0;
1154 }
1155
1156 static int ql_is_auto_cfg(struct ql3_adapter *qdev)
1157 {
1158         u16 reg;
1159         ql_mii_read_reg(qdev, 0x00, &reg);
1160         return (reg & 0x1000) != 0;
1161 }
1162
1163 /*
1164  * Caller holds hw_lock.
1165  */
1166 static int ql_is_auto_neg_complete(struct ql3_adapter *qdev)
1167 {
1168         struct ql3xxx_port_registers __iomem *port_regs =
1169                         qdev->mem_map_registers;
1170         u32 bitToCheck = 0;
1171         u32 temp;
1172
1173         switch (qdev->mac_index) {
1174         case 0:
1175                 bitToCheck = PORT_STATUS_AC0;
1176                 break;
1177         case 1:
1178                 bitToCheck = PORT_STATUS_AC1;
1179                 break;
1180         }
1181
1182         temp = ql_read_page0_reg(qdev, &port_regs->portStatus);
1183         if (temp & bitToCheck) {
1184                 netif_info(qdev, link, qdev->ndev, "Auto-Negotiate complete\n");
1185                 return 1;
1186         }
1187         netif_info(qdev, link, qdev->ndev, "Auto-Negotiate incomplete\n");
1188         return 0;
1189 }
1190
1191 /*
1192  *  ql_is_neg_pause() returns 1 if pause was negotiated to be on
1193  */
1194 static int ql_is_neg_pause(struct ql3_adapter *qdev)
1195 {
1196         if (ql_is_fiber(qdev))
1197                 return ql_is_petbi_neg_pause(qdev);
1198         else
1199                 return ql_is_phy_neg_pause(qdev);
1200 }
1201
1202 static int ql_auto_neg_error(struct ql3_adapter *qdev)
1203 {
1204         struct ql3xxx_port_registers __iomem *port_regs =
1205                         qdev->mem_map_registers;
1206         u32 bitToCheck = 0;
1207         u32 temp;
1208
1209         switch (qdev->mac_index) {
1210         case 0:
1211                 bitToCheck = PORT_STATUS_AE0;
1212                 break;
1213         case 1:
1214                 bitToCheck = PORT_STATUS_AE1;
1215                 break;
1216         }
1217         temp = ql_read_page0_reg(qdev, &port_regs->portStatus);
1218         return (temp & bitToCheck) != 0;
1219 }
1220
1221 static u32 ql_get_link_speed(struct ql3_adapter *qdev)
1222 {
1223         if (ql_is_fiber(qdev))
1224                 return SPEED_1000;
1225         else
1226                 return ql_phy_get_speed(qdev);
1227 }
1228
1229 static int ql_is_link_full_dup(struct ql3_adapter *qdev)
1230 {
1231         if (ql_is_fiber(qdev))
1232                 return 1;
1233         else
1234                 return ql_is_full_dup(qdev);
1235 }
1236
1237 /*
1238  * Caller holds hw_lock.
1239  */
1240 static int ql_link_down_detect(struct ql3_adapter *qdev)
1241 {
1242         struct ql3xxx_port_registers __iomem *port_regs =
1243                         qdev->mem_map_registers;
1244         u32 bitToCheck = 0;
1245         u32 temp;
1246
1247         switch (qdev->mac_index) {
1248         case 0:
1249                 bitToCheck = ISP_CONTROL_LINK_DN_0;
1250                 break;
1251         case 1:
1252                 bitToCheck = ISP_CONTROL_LINK_DN_1;
1253                 break;
1254         }
1255
1256         temp =
1257             ql_read_common_reg(qdev, &port_regs->CommonRegs.ispControlStatus);
1258         return (temp & bitToCheck) != 0;
1259 }
1260
1261 /*
1262  * Caller holds hw_lock.
1263  */
1264 static int ql_link_down_detect_clear(struct ql3_adapter *qdev)
1265 {
1266         struct ql3xxx_port_registers __iomem *port_regs =
1267                         qdev->mem_map_registers;
1268
1269         switch (qdev->mac_index) {
1270         case 0:
1271                 ql_write_common_reg(qdev,
1272                                     &port_regs->CommonRegs.ispControlStatus,
1273                                     (ISP_CONTROL_LINK_DN_0) |
1274                                     (ISP_CONTROL_LINK_DN_0 << 16));
1275                 break;
1276
1277         case 1:
1278                 ql_write_common_reg(qdev,
1279                                     &port_regs->CommonRegs.ispControlStatus,
1280                                     (ISP_CONTROL_LINK_DN_1) |
1281                                     (ISP_CONTROL_LINK_DN_1 << 16));
1282                 break;
1283
1284         default:
1285                 return 1;
1286         }
1287
1288         return 0;
1289 }
1290
1291 /*
1292  * Caller holds hw_lock.
1293  */
1294 static int ql_this_adapter_controls_port(struct ql3_adapter *qdev)
1295 {
1296         struct ql3xxx_port_registers __iomem *port_regs =
1297                         qdev->mem_map_registers;
1298         u32 bitToCheck = 0;
1299         u32 temp;
1300
1301         switch (qdev->mac_index) {
1302         case 0:
1303                 bitToCheck = PORT_STATUS_F1_ENABLED;
1304                 break;
1305         case 1:
1306                 bitToCheck = PORT_STATUS_F3_ENABLED;
1307                 break;
1308         default:
1309                 break;
1310         }
1311
1312         temp = ql_read_page0_reg(qdev, &port_regs->portStatus);
1313         if (temp & bitToCheck) {
1314                 netif_printk(qdev, link, KERN_DEBUG, qdev->ndev,
1315                              "not link master\n");
1316                 return 0;
1317         }
1318
1319         netif_printk(qdev, link, KERN_DEBUG, qdev->ndev, "link master\n");
1320         return 1;
1321 }
1322
1323 static void ql_phy_reset_ex(struct ql3_adapter *qdev)
1324 {
1325         ql_mii_write_reg_ex(qdev, CONTROL_REG, PHY_CTRL_SOFT_RESET,
1326                             PHYAddr[qdev->mac_index]);
1327 }
1328
1329 static void ql_phy_start_neg_ex(struct ql3_adapter *qdev)
1330 {
1331         u16 reg;
1332         u16 portConfiguration;
1333
1334         if (qdev->phyType == PHY_AGERE_ET1011C)
1335                 ql_mii_write_reg(qdev, 0x13, 0x0000);
1336                                         /* turn off external loopback */
1337
1338         if (qdev->mac_index == 0)
1339                 portConfiguration =
1340                         qdev->nvram_data.macCfg_port0.portConfiguration;
1341         else
1342                 portConfiguration =
1343                         qdev->nvram_data.macCfg_port1.portConfiguration;
1344
1345         /*  Some HBA's in the field are set to 0 and they need to
1346             be reinterpreted with a default value */
1347         if (portConfiguration == 0)
1348                 portConfiguration = PORT_CONFIG_DEFAULT;
1349
1350         /* Set the 1000 advertisements */
1351         ql_mii_read_reg_ex(qdev, PHY_GIG_CONTROL, &reg,
1352                            PHYAddr[qdev->mac_index]);
1353         reg &= ~PHY_GIG_ALL_PARAMS;
1354
1355         if (portConfiguration & PORT_CONFIG_1000MB_SPEED) {
1356                 if (portConfiguration & PORT_CONFIG_FULL_DUPLEX_ENABLED)
1357                         reg |= PHY_GIG_ADV_1000F;
1358                 else
1359                         reg |= PHY_GIG_ADV_1000H;
1360         }
1361
1362         ql_mii_write_reg_ex(qdev, PHY_GIG_CONTROL, reg,
1363                             PHYAddr[qdev->mac_index]);
1364
1365         /* Set the 10/100 & pause negotiation advertisements */
1366         ql_mii_read_reg_ex(qdev, PHY_NEG_ADVER, &reg,
1367                            PHYAddr[qdev->mac_index]);
1368         reg &= ~PHY_NEG_ALL_PARAMS;
1369
1370         if (portConfiguration & PORT_CONFIG_SYM_PAUSE_ENABLED)
1371                 reg |= PHY_NEG_ASY_PAUSE | PHY_NEG_SYM_PAUSE;
1372
1373         if (portConfiguration & PORT_CONFIG_FULL_DUPLEX_ENABLED) {
1374                 if (portConfiguration & PORT_CONFIG_100MB_SPEED)
1375                         reg |= PHY_NEG_ADV_100F;
1376
1377                 if (portConfiguration & PORT_CONFIG_10MB_SPEED)
1378                         reg |= PHY_NEG_ADV_10F;
1379         }
1380
1381         if (portConfiguration & PORT_CONFIG_HALF_DUPLEX_ENABLED) {
1382                 if (portConfiguration & PORT_CONFIG_100MB_SPEED)
1383                         reg |= PHY_NEG_ADV_100H;
1384
1385                 if (portConfiguration & PORT_CONFIG_10MB_SPEED)
1386                         reg |= PHY_NEG_ADV_10H;
1387         }
1388
1389         if (portConfiguration & PORT_CONFIG_1000MB_SPEED)
1390                 reg |= 1;
1391
1392         ql_mii_write_reg_ex(qdev, PHY_NEG_ADVER, reg,
1393                             PHYAddr[qdev->mac_index]);
1394
1395         ql_mii_read_reg_ex(qdev, CONTROL_REG, &reg, PHYAddr[qdev->mac_index]);
1396
1397         ql_mii_write_reg_ex(qdev, CONTROL_REG,
1398                             reg | PHY_CTRL_RESTART_NEG | PHY_CTRL_AUTO_NEG,
1399                             PHYAddr[qdev->mac_index]);
1400 }
1401
1402 static void ql_phy_init_ex(struct ql3_adapter *qdev)
1403 {
1404         ql_phy_reset_ex(qdev);
1405         PHY_Setup(qdev);
1406         ql_phy_start_neg_ex(qdev);
1407 }
1408
1409 /*
1410  * Caller holds hw_lock.
1411  */
1412 static u32 ql_get_link_state(struct ql3_adapter *qdev)
1413 {
1414         struct ql3xxx_port_registers __iomem *port_regs =
1415                         qdev->mem_map_registers;
1416         u32 bitToCheck = 0;
1417         u32 temp, linkState;
1418
1419         switch (qdev->mac_index) {
1420         case 0:
1421                 bitToCheck = PORT_STATUS_UP0;
1422                 break;
1423         case 1:
1424                 bitToCheck = PORT_STATUS_UP1;
1425                 break;
1426         }
1427
1428         temp = ql_read_page0_reg(qdev, &port_regs->portStatus);
1429         if (temp & bitToCheck)
1430                 linkState = LS_UP;
1431         else
1432                 linkState = LS_DOWN;
1433
1434         return linkState;
1435 }
1436
1437 static int ql_port_start(struct ql3_adapter *qdev)
1438 {
1439         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
1440                 (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index) *
1441                          2) << 7)) {
1442                 netdev_err(qdev->ndev, "Could not get hw lock for GIO\n");
1443                 return -1;
1444         }
1445
1446         if (ql_is_fiber(qdev)) {
1447                 ql_petbi_init(qdev);
1448         } else {
1449                 /* Copper port */
1450                 ql_phy_init_ex(qdev);
1451         }
1452
1453         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1454         return 0;
1455 }
1456
1457 static int ql_finish_auto_neg(struct ql3_adapter *qdev)
1458 {
1459
1460         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
1461                 (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index) *
1462                          2) << 7))
1463                 return -1;
1464
1465         if (!ql_auto_neg_error(qdev)) {
1466                 if (test_bit(QL_LINK_MASTER, &qdev->flags)) {
1467                         /* configure the MAC */
1468                         netif_printk(qdev, link, KERN_DEBUG, qdev->ndev,
1469                                      "Configuring link\n");
1470                         ql_mac_cfg_soft_reset(qdev, 1);
1471                         ql_mac_cfg_gig(qdev,
1472                                        (ql_get_link_speed
1473                                         (qdev) ==
1474                                         SPEED_1000));
1475                         ql_mac_cfg_full_dup(qdev,
1476                                             ql_is_link_full_dup
1477                                             (qdev));
1478                         ql_mac_cfg_pause(qdev,
1479                                          ql_is_neg_pause
1480                                          (qdev));
1481                         ql_mac_cfg_soft_reset(qdev, 0);
1482
1483                         /* enable the MAC */
1484                         netif_printk(qdev, link, KERN_DEBUG, qdev->ndev,
1485                                      "Enabling mac\n");
1486                         ql_mac_enable(qdev, 1);
1487                 }
1488
1489                 qdev->port_link_state = LS_UP;
1490                 netif_start_queue(qdev->ndev);
1491                 netif_carrier_on(qdev->ndev);
1492                 netif_info(qdev, link, qdev->ndev,
1493                            "Link is up at %d Mbps, %s duplex\n",
1494                            ql_get_link_speed(qdev),
1495                            ql_is_link_full_dup(qdev) ? "full" : "half");
1496
1497         } else {        /* Remote error detected */
1498
1499                 if (test_bit(QL_LINK_MASTER, &qdev->flags)) {
1500                         netif_printk(qdev, link, KERN_DEBUG, qdev->ndev,
1501                                      "Remote error detected. Calling ql_port_start()\n");
1502                         /*
1503                          * ql_port_start() is shared code and needs
1504                          * to lock the PHY on it's own.
1505                          */
1506                         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1507                         if (ql_port_start(qdev))        /* Restart port */
1508                                 return -1;
1509                         return 0;
1510                 }
1511         }
1512         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1513         return 0;
1514 }
1515
1516 static void ql_link_state_machine_work(struct work_struct *work)
1517 {
1518         struct ql3_adapter *qdev =
1519                 container_of(work, struct ql3_adapter, link_state_work.work);
1520
1521         u32 curr_link_state;
1522         unsigned long hw_flags;
1523
1524         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
1525
1526         curr_link_state = ql_get_link_state(qdev);
1527
1528         if (test_bit(QL_RESET_ACTIVE, &qdev->flags)) {
1529                 netif_info(qdev, link, qdev->ndev,
1530                            "Reset in progress, skip processing link state\n");
1531
1532                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1533
1534                 /* Restart timer on 2 second interval. */
1535                 mod_timer(&qdev->adapter_timer, jiffies + HZ * 1);
1536
1537                 return;
1538         }
1539
1540         switch (qdev->port_link_state) {
1541         default:
1542                 if (test_bit(QL_LINK_MASTER, &qdev->flags))
1543                         ql_port_start(qdev);
1544                 qdev->port_link_state = LS_DOWN;
1545                 fallthrough;
1546
1547         case LS_DOWN:
1548                 if (curr_link_state == LS_UP) {
1549                         netif_info(qdev, link, qdev->ndev, "Link is up\n");
1550                         if (ql_is_auto_neg_complete(qdev))
1551                                 ql_finish_auto_neg(qdev);
1552
1553                         if (qdev->port_link_state == LS_UP)
1554                                 ql_link_down_detect_clear(qdev);
1555
1556                         qdev->port_link_state = LS_UP;
1557                 }
1558                 break;
1559
1560         case LS_UP:
1561                 /*
1562                  * See if the link is currently down or went down and came
1563                  * back up
1564                  */
1565                 if (curr_link_state == LS_DOWN) {
1566                         netif_info(qdev, link, qdev->ndev, "Link is down\n");
1567                         qdev->port_link_state = LS_DOWN;
1568                 }
1569                 if (ql_link_down_detect(qdev))
1570                         qdev->port_link_state = LS_DOWN;
1571                 break;
1572         }
1573         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1574
1575         /* Restart timer on 2 second interval. */
1576         mod_timer(&qdev->adapter_timer, jiffies + HZ * 1);
1577 }
1578
1579 /*
1580  * Caller must take hw_lock and QL_PHY_GIO_SEM.
1581  */
1582 static void ql_get_phy_owner(struct ql3_adapter *qdev)
1583 {
1584         if (ql_this_adapter_controls_port(qdev))
1585                 set_bit(QL_LINK_MASTER, &qdev->flags);
1586         else
1587                 clear_bit(QL_LINK_MASTER, &qdev->flags);
1588 }
1589
1590 /*
1591  * Caller must take hw_lock and QL_PHY_GIO_SEM.
1592  */
1593 static void ql_init_scan_mode(struct ql3_adapter *qdev)
1594 {
1595         ql_mii_enable_scan_mode(qdev);
1596
1597         if (test_bit(QL_LINK_OPTICAL, &qdev->flags)) {
1598                 if (ql_this_adapter_controls_port(qdev))
1599                         ql_petbi_init_ex(qdev);
1600         } else {
1601                 if (ql_this_adapter_controls_port(qdev))
1602                         ql_phy_init_ex(qdev);
1603         }
1604 }
1605
1606 /*
1607  * MII_Setup needs to be called before taking the PHY out of reset
1608  * so that the management interface clock speed can be set properly.
1609  * It would be better if we had a way to disable MDC until after the
1610  * PHY is out of reset, but we don't have that capability.
1611  */
1612 static int ql_mii_setup(struct ql3_adapter *qdev)
1613 {
1614         u32 reg;
1615         struct ql3xxx_port_registers __iomem *port_regs =
1616                         qdev->mem_map_registers;
1617
1618         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
1619                         (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index) *
1620                          2) << 7))
1621                 return -1;
1622
1623         if (qdev->device_id == QL3032_DEVICE_ID)
1624                 ql_write_page0_reg(qdev,
1625                         &port_regs->macMIIMgmtControlReg, 0x0f00000);
1626
1627         /* Divide 125MHz clock by 28 to meet PHY timing requirements */
1628         reg = MAC_MII_CONTROL_CLK_SEL_DIV28;
1629
1630         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
1631                            reg | ((MAC_MII_CONTROL_CLK_SEL_MASK) << 16));
1632
1633         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1634         return 0;
1635 }
1636
1637 #define SUPPORTED_OPTICAL_MODES (SUPPORTED_1000baseT_Full |     \
1638                                  SUPPORTED_FIBRE |              \
1639                                  SUPPORTED_Autoneg)
1640 #define SUPPORTED_TP_MODES      (SUPPORTED_10baseT_Half |       \
1641                                  SUPPORTED_10baseT_Full |       \
1642                                  SUPPORTED_100baseT_Half |      \
1643                                  SUPPORTED_100baseT_Full |      \
1644                                  SUPPORTED_1000baseT_Half |     \
1645                                  SUPPORTED_1000baseT_Full |     \
1646                                  SUPPORTED_Autoneg |            \
1647                                  SUPPORTED_TP)                  \
1648
1649 static u32 ql_supported_modes(struct ql3_adapter *qdev)
1650 {
1651         if (test_bit(QL_LINK_OPTICAL, &qdev->flags))
1652                 return SUPPORTED_OPTICAL_MODES;
1653
1654         return SUPPORTED_TP_MODES;
1655 }
1656
1657 static int ql_get_auto_cfg_status(struct ql3_adapter *qdev)
1658 {
1659         int status;
1660         unsigned long hw_flags;
1661         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
1662         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
1663                             (QL_RESOURCE_BITS_BASE_CODE |
1664                              (qdev->mac_index) * 2) << 7)) {
1665                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1666                 return 0;
1667         }
1668         status = ql_is_auto_cfg(qdev);
1669         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1670         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1671         return status;
1672 }
1673
1674 static u32 ql_get_speed(struct ql3_adapter *qdev)
1675 {
1676         u32 status;
1677         unsigned long hw_flags;
1678         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
1679         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
1680                             (QL_RESOURCE_BITS_BASE_CODE |
1681                              (qdev->mac_index) * 2) << 7)) {
1682                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1683                 return 0;
1684         }
1685         status = ql_get_link_speed(qdev);
1686         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1687         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1688         return status;
1689 }
1690
1691 static int ql_get_full_dup(struct ql3_adapter *qdev)
1692 {
1693         int status;
1694         unsigned long hw_flags;
1695         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
1696         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
1697                             (QL_RESOURCE_BITS_BASE_CODE |
1698                              (qdev->mac_index) * 2) << 7)) {
1699                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1700                 return 0;
1701         }
1702         status = ql_is_link_full_dup(qdev);
1703         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1704         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1705         return status;
1706 }
1707
1708 static int ql_get_link_ksettings(struct net_device *ndev,
1709                                  struct ethtool_link_ksettings *cmd)
1710 {
1711         struct ql3_adapter *qdev = netdev_priv(ndev);
1712         u32 supported, advertising;
1713
1714         supported = ql_supported_modes(qdev);
1715
1716         if (test_bit(QL_LINK_OPTICAL, &qdev->flags)) {
1717                 cmd->base.port = PORT_FIBRE;
1718         } else {
1719                 cmd->base.port = PORT_TP;
1720                 cmd->base.phy_address = qdev->PHYAddr;
1721         }
1722         advertising = ql_supported_modes(qdev);
1723         cmd->base.autoneg = ql_get_auto_cfg_status(qdev);
1724         cmd->base.speed = ql_get_speed(qdev);
1725         cmd->base.duplex = ql_get_full_dup(qdev);
1726
1727         ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
1728                                                 supported);
1729         ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
1730                                                 advertising);
1731
1732         return 0;
1733 }
1734
1735 static void ql_get_drvinfo(struct net_device *ndev,
1736                            struct ethtool_drvinfo *drvinfo)
1737 {
1738         struct ql3_adapter *qdev = netdev_priv(ndev);
1739         strlcpy(drvinfo->driver, ql3xxx_driver_name, sizeof(drvinfo->driver));
1740         strlcpy(drvinfo->version, ql3xxx_driver_version,
1741                 sizeof(drvinfo->version));
1742         strlcpy(drvinfo->bus_info, pci_name(qdev->pdev),
1743                 sizeof(drvinfo->bus_info));
1744 }
1745
1746 static u32 ql_get_msglevel(struct net_device *ndev)
1747 {
1748         struct ql3_adapter *qdev = netdev_priv(ndev);
1749         return qdev->msg_enable;
1750 }
1751
1752 static void ql_set_msglevel(struct net_device *ndev, u32 value)
1753 {
1754         struct ql3_adapter *qdev = netdev_priv(ndev);
1755         qdev->msg_enable = value;
1756 }
1757
1758 static void ql_get_pauseparam(struct net_device *ndev,
1759                               struct ethtool_pauseparam *pause)
1760 {
1761         struct ql3_adapter *qdev = netdev_priv(ndev);
1762         struct ql3xxx_port_registers __iomem *port_regs =
1763                 qdev->mem_map_registers;
1764
1765         u32 reg;
1766         if (qdev->mac_index == 0)
1767                 reg = ql_read_page0_reg(qdev, &port_regs->mac0ConfigReg);
1768         else
1769                 reg = ql_read_page0_reg(qdev, &port_regs->mac1ConfigReg);
1770
1771         pause->autoneg  = ql_get_auto_cfg_status(qdev);
1772         pause->rx_pause = (reg & MAC_CONFIG_REG_RF) >> 2;
1773         pause->tx_pause = (reg & MAC_CONFIG_REG_TF) >> 1;
1774 }
1775
1776 static const struct ethtool_ops ql3xxx_ethtool_ops = {
1777         .get_drvinfo = ql_get_drvinfo,
1778         .get_link = ethtool_op_get_link,
1779         .get_msglevel = ql_get_msglevel,
1780         .set_msglevel = ql_set_msglevel,
1781         .get_pauseparam = ql_get_pauseparam,
1782         .get_link_ksettings = ql_get_link_ksettings,
1783 };
1784
1785 static int ql_populate_free_queue(struct ql3_adapter *qdev)
1786 {
1787         struct ql_rcv_buf_cb *lrg_buf_cb = qdev->lrg_buf_free_head;
1788         dma_addr_t map;
1789         int err;
1790
1791         while (lrg_buf_cb) {
1792                 if (!lrg_buf_cb->skb) {
1793                         lrg_buf_cb->skb =
1794                                 netdev_alloc_skb(qdev->ndev,
1795                                                  qdev->lrg_buffer_len);
1796                         if (unlikely(!lrg_buf_cb->skb)) {
1797                                 netdev_printk(KERN_DEBUG, qdev->ndev,
1798                                               "Failed netdev_alloc_skb()\n");
1799                                 break;
1800                         } else {
1801                                 /*
1802                                  * We save some space to copy the ethhdr from
1803                                  * first buffer
1804                                  */
1805                                 skb_reserve(lrg_buf_cb->skb, QL_HEADER_SPACE);
1806                                 map = pci_map_single(qdev->pdev,
1807                                                      lrg_buf_cb->skb->data,
1808                                                      qdev->lrg_buffer_len -
1809                                                      QL_HEADER_SPACE,
1810                                                      PCI_DMA_FROMDEVICE);
1811
1812                                 err = pci_dma_mapping_error(qdev->pdev, map);
1813                                 if (err) {
1814                                         netdev_err(qdev->ndev,
1815                                                    "PCI mapping failed with error: %d\n",
1816                                                    err);
1817                                         dev_kfree_skb(lrg_buf_cb->skb);
1818                                         lrg_buf_cb->skb = NULL;
1819                                         break;
1820                                 }
1821
1822
1823                                 lrg_buf_cb->buf_phy_addr_low =
1824                                         cpu_to_le32(LS_64BITS(map));
1825                                 lrg_buf_cb->buf_phy_addr_high =
1826                                         cpu_to_le32(MS_64BITS(map));
1827                                 dma_unmap_addr_set(lrg_buf_cb, mapaddr, map);
1828                                 dma_unmap_len_set(lrg_buf_cb, maplen,
1829                                                   qdev->lrg_buffer_len -
1830                                                   QL_HEADER_SPACE);
1831                                 --qdev->lrg_buf_skb_check;
1832                                 if (!qdev->lrg_buf_skb_check)
1833                                         return 1;
1834                         }
1835                 }
1836                 lrg_buf_cb = lrg_buf_cb->next;
1837         }
1838         return 0;
1839 }
1840
1841 /*
1842  * Caller holds hw_lock.
1843  */
1844 static void ql_update_small_bufq_prod_index(struct ql3_adapter *qdev)
1845 {
1846         struct ql3xxx_port_registers __iomem *port_regs =
1847                 qdev->mem_map_registers;
1848
1849         if (qdev->small_buf_release_cnt >= 16) {
1850                 while (qdev->small_buf_release_cnt >= 16) {
1851                         qdev->small_buf_q_producer_index++;
1852
1853                         if (qdev->small_buf_q_producer_index ==
1854                             NUM_SBUFQ_ENTRIES)
1855                                 qdev->small_buf_q_producer_index = 0;
1856                         qdev->small_buf_release_cnt -= 8;
1857                 }
1858                 wmb();
1859                 writel_relaxed(qdev->small_buf_q_producer_index,
1860                                &port_regs->CommonRegs.rxSmallQProducerIndex);
1861         }
1862 }
1863
1864 /*
1865  * Caller holds hw_lock.
1866  */
1867 static void ql_update_lrg_bufq_prod_index(struct ql3_adapter *qdev)
1868 {
1869         struct bufq_addr_element *lrg_buf_q_ele;
1870         int i;
1871         struct ql_rcv_buf_cb *lrg_buf_cb;
1872         struct ql3xxx_port_registers __iomem *port_regs =
1873                 qdev->mem_map_registers;
1874
1875         if ((qdev->lrg_buf_free_count >= 8) &&
1876             (qdev->lrg_buf_release_cnt >= 16)) {
1877
1878                 if (qdev->lrg_buf_skb_check)
1879                         if (!ql_populate_free_queue(qdev))
1880                                 return;
1881
1882                 lrg_buf_q_ele = qdev->lrg_buf_next_free;
1883
1884                 while ((qdev->lrg_buf_release_cnt >= 16) &&
1885                        (qdev->lrg_buf_free_count >= 8)) {
1886
1887                         for (i = 0; i < 8; i++) {
1888                                 lrg_buf_cb =
1889                                     ql_get_from_lrg_buf_free_list(qdev);
1890                                 lrg_buf_q_ele->addr_high =
1891                                     lrg_buf_cb->buf_phy_addr_high;
1892                                 lrg_buf_q_ele->addr_low =
1893                                     lrg_buf_cb->buf_phy_addr_low;
1894                                 lrg_buf_q_ele++;
1895
1896                                 qdev->lrg_buf_release_cnt--;
1897                         }
1898
1899                         qdev->lrg_buf_q_producer_index++;
1900
1901                         if (qdev->lrg_buf_q_producer_index ==
1902                             qdev->num_lbufq_entries)
1903                                 qdev->lrg_buf_q_producer_index = 0;
1904
1905                         if (qdev->lrg_buf_q_producer_index ==
1906                             (qdev->num_lbufq_entries - 1)) {
1907                                 lrg_buf_q_ele = qdev->lrg_buf_q_virt_addr;
1908                         }
1909                 }
1910                 wmb();
1911                 qdev->lrg_buf_next_free = lrg_buf_q_ele;
1912                 writel(qdev->lrg_buf_q_producer_index,
1913                         &port_regs->CommonRegs.rxLargeQProducerIndex);
1914         }
1915 }
1916
1917 static void ql_process_mac_tx_intr(struct ql3_adapter *qdev,
1918                                    struct ob_mac_iocb_rsp *mac_rsp)
1919 {
1920         struct ql_tx_buf_cb *tx_cb;
1921         int i;
1922
1923         if (mac_rsp->flags & OB_MAC_IOCB_RSP_S) {
1924                 netdev_warn(qdev->ndev,
1925                             "Frame too short but it was padded and sent\n");
1926         }
1927
1928         tx_cb = &qdev->tx_buf[mac_rsp->transaction_id];
1929
1930         /*  Check the transmit response flags for any errors */
1931         if (mac_rsp->flags & OB_MAC_IOCB_RSP_S) {
1932                 netdev_err(qdev->ndev,
1933                            "Frame too short to be legal, frame not sent\n");
1934
1935                 qdev->ndev->stats.tx_errors++;
1936                 goto frame_not_sent;
1937         }
1938
1939         if (tx_cb->seg_count == 0) {
1940                 netdev_err(qdev->ndev, "tx_cb->seg_count == 0: %d\n",
1941                            mac_rsp->transaction_id);
1942
1943                 qdev->ndev->stats.tx_errors++;
1944                 goto invalid_seg_count;
1945         }
1946
1947         pci_unmap_single(qdev->pdev,
1948                          dma_unmap_addr(&tx_cb->map[0], mapaddr),
1949                          dma_unmap_len(&tx_cb->map[0], maplen),
1950                          PCI_DMA_TODEVICE);
1951         tx_cb->seg_count--;
1952         if (tx_cb->seg_count) {
1953                 for (i = 1; i < tx_cb->seg_count; i++) {
1954                         pci_unmap_page(qdev->pdev,
1955                                        dma_unmap_addr(&tx_cb->map[i],
1956                                                       mapaddr),
1957                                        dma_unmap_len(&tx_cb->map[i], maplen),
1958                                        PCI_DMA_TODEVICE);
1959                 }
1960         }
1961         qdev->ndev->stats.tx_packets++;
1962         qdev->ndev->stats.tx_bytes += tx_cb->skb->len;
1963
1964 frame_not_sent:
1965         dev_kfree_skb_irq(tx_cb->skb);
1966         tx_cb->skb = NULL;
1967
1968 invalid_seg_count:
1969         atomic_inc(&qdev->tx_count);
1970 }
1971
1972 static void ql_get_sbuf(struct ql3_adapter *qdev)
1973 {
1974         if (++qdev->small_buf_index == NUM_SMALL_BUFFERS)
1975                 qdev->small_buf_index = 0;
1976         qdev->small_buf_release_cnt++;
1977 }
1978
1979 static struct ql_rcv_buf_cb *ql_get_lbuf(struct ql3_adapter *qdev)
1980 {
1981         struct ql_rcv_buf_cb *lrg_buf_cb = NULL;
1982         lrg_buf_cb = &qdev->lrg_buf[qdev->lrg_buf_index];
1983         qdev->lrg_buf_release_cnt++;
1984         if (++qdev->lrg_buf_index == qdev->num_large_buffers)
1985                 qdev->lrg_buf_index = 0;
1986         return lrg_buf_cb;
1987 }
1988
1989 /*
1990  * The difference between 3022 and 3032 for inbound completions:
1991  * 3022 uses two buffers per completion.  The first buffer contains
1992  * (some) header info, the second the remainder of the headers plus
1993  * the data.  For this chip we reserve some space at the top of the
1994  * receive buffer so that the header info in buffer one can be
1995  * prepended to the buffer two.  Buffer two is the sent up while
1996  * buffer one is returned to the hardware to be reused.
1997  * 3032 receives all of it's data and headers in one buffer for a
1998  * simpler process.  3032 also supports checksum verification as
1999  * can be seen in ql_process_macip_rx_intr().
2000  */
2001 static void ql_process_mac_rx_intr(struct ql3_adapter *qdev,
2002                                    struct ib_mac_iocb_rsp *ib_mac_rsp_ptr)
2003 {
2004         struct ql_rcv_buf_cb *lrg_buf_cb1 = NULL;
2005         struct ql_rcv_buf_cb *lrg_buf_cb2 = NULL;
2006         struct sk_buff *skb;
2007         u16 length = le16_to_cpu(ib_mac_rsp_ptr->length);
2008
2009         /*
2010          * Get the inbound address list (small buffer).
2011          */
2012         ql_get_sbuf(qdev);
2013
2014         if (qdev->device_id == QL3022_DEVICE_ID)
2015                 lrg_buf_cb1 = ql_get_lbuf(qdev);
2016
2017         /* start of second buffer */
2018         lrg_buf_cb2 = ql_get_lbuf(qdev);
2019         skb = lrg_buf_cb2->skb;
2020
2021         qdev->ndev->stats.rx_packets++;
2022         qdev->ndev->stats.rx_bytes += length;
2023
2024         skb_put(skb, length);
2025         pci_unmap_single(qdev->pdev,
2026                          dma_unmap_addr(lrg_buf_cb2, mapaddr),
2027                          dma_unmap_len(lrg_buf_cb2, maplen),
2028                          PCI_DMA_FROMDEVICE);
2029         prefetch(skb->data);
2030         skb_checksum_none_assert(skb);
2031         skb->protocol = eth_type_trans(skb, qdev->ndev);
2032
2033         napi_gro_receive(&qdev->napi, skb);
2034         lrg_buf_cb2->skb = NULL;
2035
2036         if (qdev->device_id == QL3022_DEVICE_ID)
2037                 ql_release_to_lrg_buf_free_list(qdev, lrg_buf_cb1);
2038         ql_release_to_lrg_buf_free_list(qdev, lrg_buf_cb2);
2039 }
2040
2041 static void ql_process_macip_rx_intr(struct ql3_adapter *qdev,
2042                                      struct ib_ip_iocb_rsp *ib_ip_rsp_ptr)
2043 {
2044         struct ql_rcv_buf_cb *lrg_buf_cb1 = NULL;
2045         struct ql_rcv_buf_cb *lrg_buf_cb2 = NULL;
2046         struct sk_buff *skb1 = NULL, *skb2;
2047         struct net_device *ndev = qdev->ndev;
2048         u16 length = le16_to_cpu(ib_ip_rsp_ptr->length);
2049         u16 size = 0;
2050
2051         /*
2052          * Get the inbound address list (small buffer).
2053          */
2054
2055         ql_get_sbuf(qdev);
2056
2057         if (qdev->device_id == QL3022_DEVICE_ID) {
2058                 /* start of first buffer on 3022 */
2059                 lrg_buf_cb1 = ql_get_lbuf(qdev);
2060                 skb1 = lrg_buf_cb1->skb;
2061                 size = ETH_HLEN;
2062                 if (*((u16 *) skb1->data) != 0xFFFF)
2063                         size += VLAN_ETH_HLEN - ETH_HLEN;
2064         }
2065
2066         /* start of second buffer */
2067         lrg_buf_cb2 = ql_get_lbuf(qdev);
2068         skb2 = lrg_buf_cb2->skb;
2069
2070         skb_put(skb2, length);  /* Just the second buffer length here. */
2071         pci_unmap_single(qdev->pdev,
2072                          dma_unmap_addr(lrg_buf_cb2, mapaddr),
2073                          dma_unmap_len(lrg_buf_cb2, maplen),
2074                          PCI_DMA_FROMDEVICE);
2075         prefetch(skb2->data);
2076
2077         skb_checksum_none_assert(skb2);
2078         if (qdev->device_id == QL3022_DEVICE_ID) {
2079                 /*
2080                  * Copy the ethhdr from first buffer to second. This
2081                  * is necessary for 3022 IP completions.
2082                  */
2083                 skb_copy_from_linear_data_offset(skb1, VLAN_ID_LEN,
2084                                                  skb_push(skb2, size), size);
2085         } else {
2086                 u16 checksum = le16_to_cpu(ib_ip_rsp_ptr->checksum);
2087                 if (checksum &
2088                         (IB_IP_IOCB_RSP_3032_ICE |
2089                          IB_IP_IOCB_RSP_3032_CE)) {
2090                         netdev_err(ndev,
2091                                    "%s: Bad checksum for this %s packet, checksum = %x\n",
2092                                    __func__,
2093                                    ((checksum & IB_IP_IOCB_RSP_3032_TCP) ?
2094                                     "TCP" : "UDP"), checksum);
2095                 } else if ((checksum & IB_IP_IOCB_RSP_3032_TCP) ||
2096                                 (checksum & IB_IP_IOCB_RSP_3032_UDP &&
2097                                 !(checksum & IB_IP_IOCB_RSP_3032_NUC))) {
2098                         skb2->ip_summed = CHECKSUM_UNNECESSARY;
2099                 }
2100         }
2101         skb2->protocol = eth_type_trans(skb2, qdev->ndev);
2102
2103         napi_gro_receive(&qdev->napi, skb2);
2104         ndev->stats.rx_packets++;
2105         ndev->stats.rx_bytes += length;
2106         lrg_buf_cb2->skb = NULL;
2107
2108         if (qdev->device_id == QL3022_DEVICE_ID)
2109                 ql_release_to_lrg_buf_free_list(qdev, lrg_buf_cb1);
2110         ql_release_to_lrg_buf_free_list(qdev, lrg_buf_cb2);
2111 }
2112
2113 static int ql_tx_rx_clean(struct ql3_adapter *qdev, int budget)
2114 {
2115         struct net_rsp_iocb *net_rsp;
2116         struct net_device *ndev = qdev->ndev;
2117         int work_done = 0;
2118
2119         /* While there are entries in the completion queue. */
2120         while ((le32_to_cpu(*(qdev->prsp_producer_index)) !=
2121                 qdev->rsp_consumer_index) && (work_done < budget)) {
2122
2123                 net_rsp = qdev->rsp_current;
2124                 rmb();
2125                 /*
2126                  * Fix 4032 chip's undocumented "feature" where bit-8 is set
2127                  * if the inbound completion is for a VLAN.
2128                  */
2129                 if (qdev->device_id == QL3032_DEVICE_ID)
2130                         net_rsp->opcode &= 0x7f;
2131                 switch (net_rsp->opcode) {
2132
2133                 case OPCODE_OB_MAC_IOCB_FN0:
2134                 case OPCODE_OB_MAC_IOCB_FN2:
2135                         ql_process_mac_tx_intr(qdev, (struct ob_mac_iocb_rsp *)
2136                                                net_rsp);
2137                         break;
2138
2139                 case OPCODE_IB_MAC_IOCB:
2140                 case OPCODE_IB_3032_MAC_IOCB:
2141                         ql_process_mac_rx_intr(qdev, (struct ib_mac_iocb_rsp *)
2142                                                net_rsp);
2143                         work_done++;
2144                         break;
2145
2146                 case OPCODE_IB_IP_IOCB:
2147                 case OPCODE_IB_3032_IP_IOCB:
2148                         ql_process_macip_rx_intr(qdev, (struct ib_ip_iocb_rsp *)
2149                                                  net_rsp);
2150                         work_done++;
2151                         break;
2152                 default: {
2153                         u32 *tmp = (u32 *)net_rsp;
2154                         netdev_err(ndev,
2155                                    "Hit default case, not handled!\n"
2156                                    "    dropping the packet, opcode = %x\n"
2157                                    "0x%08lx 0x%08lx 0x%08lx 0x%08lx\n",
2158                                    net_rsp->opcode,
2159                                    (unsigned long int)tmp[0],
2160                                    (unsigned long int)tmp[1],
2161                                    (unsigned long int)tmp[2],
2162                                    (unsigned long int)tmp[3]);
2163                 }
2164                 }
2165
2166                 qdev->rsp_consumer_index++;
2167
2168                 if (qdev->rsp_consumer_index == NUM_RSP_Q_ENTRIES) {
2169                         qdev->rsp_consumer_index = 0;
2170                         qdev->rsp_current = qdev->rsp_q_virt_addr;
2171                 } else {
2172                         qdev->rsp_current++;
2173                 }
2174
2175         }
2176
2177         return work_done;
2178 }
2179
2180 static int ql_poll(struct napi_struct *napi, int budget)
2181 {
2182         struct ql3_adapter *qdev = container_of(napi, struct ql3_adapter, napi);
2183         struct ql3xxx_port_registers __iomem *port_regs =
2184                 qdev->mem_map_registers;
2185         int work_done;
2186
2187         work_done = ql_tx_rx_clean(qdev, budget);
2188
2189         if (work_done < budget && napi_complete_done(napi, work_done)) {
2190                 unsigned long flags;
2191
2192                 spin_lock_irqsave(&qdev->hw_lock, flags);
2193                 ql_update_small_bufq_prod_index(qdev);
2194                 ql_update_lrg_bufq_prod_index(qdev);
2195                 writel(qdev->rsp_consumer_index,
2196                             &port_regs->CommonRegs.rspQConsumerIndex);
2197                 spin_unlock_irqrestore(&qdev->hw_lock, flags);
2198
2199                 ql_enable_interrupts(qdev);
2200         }
2201         return work_done;
2202 }
2203
2204 static irqreturn_t ql3xxx_isr(int irq, void *dev_id)
2205 {
2206
2207         struct net_device *ndev = dev_id;
2208         struct ql3_adapter *qdev = netdev_priv(ndev);
2209         struct ql3xxx_port_registers __iomem *port_regs =
2210                 qdev->mem_map_registers;
2211         u32 value;
2212         int handled = 1;
2213         u32 var;
2214
2215         value = ql_read_common_reg_l(qdev,
2216                                      &port_regs->CommonRegs.ispControlStatus);
2217
2218         if (value & (ISP_CONTROL_FE | ISP_CONTROL_RI)) {
2219                 spin_lock(&qdev->adapter_lock);
2220                 netif_stop_queue(qdev->ndev);
2221                 netif_carrier_off(qdev->ndev);
2222                 ql_disable_interrupts(qdev);
2223                 qdev->port_link_state = LS_DOWN;
2224                 set_bit(QL_RESET_ACTIVE, &qdev->flags) ;
2225
2226                 if (value & ISP_CONTROL_FE) {
2227                         /*
2228                          * Chip Fatal Error.
2229                          */
2230                         var =
2231                             ql_read_page0_reg_l(qdev,
2232                                               &port_regs->PortFatalErrStatus);
2233                         netdev_warn(ndev,
2234                                     "Resetting chip. PortFatalErrStatus register = 0x%x\n",
2235                                     var);
2236                         set_bit(QL_RESET_START, &qdev->flags) ;
2237                 } else {
2238                         /*
2239                          * Soft Reset Requested.
2240                          */
2241                         set_bit(QL_RESET_PER_SCSI, &qdev->flags) ;
2242                         netdev_err(ndev,
2243                                    "Another function issued a reset to the chip. ISR value = %x\n",
2244                                    value);
2245                 }
2246                 queue_delayed_work(qdev->workqueue, &qdev->reset_work, 0);
2247                 spin_unlock(&qdev->adapter_lock);
2248         } else if (value & ISP_IMR_DISABLE_CMPL_INT) {
2249                 ql_disable_interrupts(qdev);
2250                 if (likely(napi_schedule_prep(&qdev->napi)))
2251                         __napi_schedule(&qdev->napi);
2252         } else
2253                 return IRQ_NONE;
2254
2255         return IRQ_RETVAL(handled);
2256 }
2257
2258 /*
2259  * Get the total number of segments needed for the given number of fragments.
2260  * This is necessary because outbound address lists (OAL) will be used when
2261  * more than two frags are given.  Each address list has 5 addr/len pairs.
2262  * The 5th pair in each OAL is used to  point to the next OAL if more frags
2263  * are coming.  That is why the frags:segment count ratio is not linear.
2264  */
2265 static int ql_get_seg_count(struct ql3_adapter *qdev, unsigned short frags)
2266 {
2267         if (qdev->device_id == QL3022_DEVICE_ID)
2268                 return 1;
2269
2270         if (frags <= 2)
2271                 return frags + 1;
2272         else if (frags <= 6)
2273                 return frags + 2;
2274         else if (frags <= 10)
2275                 return frags + 3;
2276         else if (frags <= 14)
2277                 return frags + 4;
2278         else if (frags <= 18)
2279                 return frags + 5;
2280         return -1;
2281 }
2282
2283 static void ql_hw_csum_setup(const struct sk_buff *skb,
2284                              struct ob_mac_iocb_req *mac_iocb_ptr)
2285 {
2286         const struct iphdr *ip = ip_hdr(skb);
2287
2288         mac_iocb_ptr->ip_hdr_off = skb_network_offset(skb);
2289         mac_iocb_ptr->ip_hdr_len = ip->ihl;
2290
2291         if (ip->protocol == IPPROTO_TCP) {
2292                 mac_iocb_ptr->flags1 |= OB_3032MAC_IOCB_REQ_TC |
2293                         OB_3032MAC_IOCB_REQ_IC;
2294         } else {
2295                 mac_iocb_ptr->flags1 |= OB_3032MAC_IOCB_REQ_UC |
2296                         OB_3032MAC_IOCB_REQ_IC;
2297         }
2298
2299 }
2300
2301 /*
2302  * Map the buffers for this transmit.
2303  * This will return NETDEV_TX_BUSY or NETDEV_TX_OK based on success.
2304  */
2305 static int ql_send_map(struct ql3_adapter *qdev,
2306                                 struct ob_mac_iocb_req *mac_iocb_ptr,
2307                                 struct ql_tx_buf_cb *tx_cb,
2308                                 struct sk_buff *skb)
2309 {
2310         struct oal *oal;
2311         struct oal_entry *oal_entry;
2312         int len = skb_headlen(skb);
2313         dma_addr_t map;
2314         int err;
2315         int completed_segs, i;
2316         int seg_cnt, seg = 0;
2317         int frag_cnt = (int)skb_shinfo(skb)->nr_frags;
2318
2319         seg_cnt = tx_cb->seg_count;
2320         /*
2321          * Map the skb buffer first.
2322          */
2323         map = pci_map_single(qdev->pdev, skb->data, len, PCI_DMA_TODEVICE);
2324
2325         err = pci_dma_mapping_error(qdev->pdev, map);
2326         if (err) {
2327                 netdev_err(qdev->ndev, "PCI mapping failed with error: %d\n",
2328                            err);
2329
2330                 return NETDEV_TX_BUSY;
2331         }
2332
2333         oal_entry = (struct oal_entry *)&mac_iocb_ptr->buf_addr0_low;
2334         oal_entry->dma_lo = cpu_to_le32(LS_64BITS(map));
2335         oal_entry->dma_hi = cpu_to_le32(MS_64BITS(map));
2336         oal_entry->len = cpu_to_le32(len);
2337         dma_unmap_addr_set(&tx_cb->map[seg], mapaddr, map);
2338         dma_unmap_len_set(&tx_cb->map[seg], maplen, len);
2339         seg++;
2340
2341         if (seg_cnt == 1) {
2342                 /* Terminate the last segment. */
2343                 oal_entry->len |= cpu_to_le32(OAL_LAST_ENTRY);
2344                 return NETDEV_TX_OK;
2345         }
2346         oal = tx_cb->oal;
2347         for (completed_segs = 0;
2348              completed_segs < frag_cnt;
2349              completed_segs++, seg++) {
2350                 skb_frag_t *frag = &skb_shinfo(skb)->frags[completed_segs];
2351                 oal_entry++;
2352                 /*
2353                  * Check for continuation requirements.
2354                  * It's strange but necessary.
2355                  * Continuation entry points to outbound address list.
2356                  */
2357                 if ((seg == 2 && seg_cnt > 3) ||
2358                     (seg == 7 && seg_cnt > 8) ||
2359                     (seg == 12 && seg_cnt > 13) ||
2360                     (seg == 17 && seg_cnt > 18)) {
2361                         map = pci_map_single(qdev->pdev, oal,
2362                                              sizeof(struct oal),
2363                                              PCI_DMA_TODEVICE);
2364
2365                         err = pci_dma_mapping_error(qdev->pdev, map);
2366                         if (err) {
2367                                 netdev_err(qdev->ndev,
2368                                            "PCI mapping outbound address list with error: %d\n",
2369                                            err);
2370                                 goto map_error;
2371                         }
2372
2373                         oal_entry->dma_lo = cpu_to_le32(LS_64BITS(map));
2374                         oal_entry->dma_hi = cpu_to_le32(MS_64BITS(map));
2375                         oal_entry->len = cpu_to_le32(sizeof(struct oal) |
2376                                                      OAL_CONT_ENTRY);
2377                         dma_unmap_addr_set(&tx_cb->map[seg], mapaddr, map);
2378                         dma_unmap_len_set(&tx_cb->map[seg], maplen,
2379                                           sizeof(struct oal));
2380                         oal_entry = (struct oal_entry *)oal;
2381                         oal++;
2382                         seg++;
2383                 }
2384
2385                 map = skb_frag_dma_map(&qdev->pdev->dev, frag, 0, skb_frag_size(frag),
2386                                        DMA_TO_DEVICE);
2387
2388                 err = dma_mapping_error(&qdev->pdev->dev, map);
2389                 if (err) {
2390                         netdev_err(qdev->ndev,
2391                                    "PCI mapping frags failed with error: %d\n",
2392                                    err);
2393                         goto map_error;
2394                 }
2395
2396                 oal_entry->dma_lo = cpu_to_le32(LS_64BITS(map));
2397                 oal_entry->dma_hi = cpu_to_le32(MS_64BITS(map));
2398                 oal_entry->len = cpu_to_le32(skb_frag_size(frag));
2399                 dma_unmap_addr_set(&tx_cb->map[seg], mapaddr, map);
2400                 dma_unmap_len_set(&tx_cb->map[seg], maplen, skb_frag_size(frag));
2401                 }
2402         /* Terminate the last segment. */
2403         oal_entry->len |= cpu_to_le32(OAL_LAST_ENTRY);
2404         return NETDEV_TX_OK;
2405
2406 map_error:
2407         /* A PCI mapping failed and now we will need to back out
2408          * We need to traverse through the oal's and associated pages which
2409          * have been mapped and now we must unmap them to clean up properly
2410          */
2411
2412         seg = 1;
2413         oal_entry = (struct oal_entry *)&mac_iocb_ptr->buf_addr0_low;
2414         oal = tx_cb->oal;
2415         for (i = 0; i < completed_segs; i++, seg++) {
2416                 oal_entry++;
2417
2418                 /*
2419                  * Check for continuation requirements.
2420                  * It's strange but necessary.
2421                  */
2422
2423                 if ((seg == 2 && seg_cnt > 3) ||
2424                     (seg == 7 && seg_cnt > 8) ||
2425                     (seg == 12 && seg_cnt > 13) ||
2426                     (seg == 17 && seg_cnt > 18)) {
2427                         pci_unmap_single(qdev->pdev,
2428                                 dma_unmap_addr(&tx_cb->map[seg], mapaddr),
2429                                 dma_unmap_len(&tx_cb->map[seg], maplen),
2430                                  PCI_DMA_TODEVICE);
2431                         oal++;
2432                         seg++;
2433                 }
2434
2435                 pci_unmap_page(qdev->pdev,
2436                                dma_unmap_addr(&tx_cb->map[seg], mapaddr),
2437                                dma_unmap_len(&tx_cb->map[seg], maplen),
2438                                PCI_DMA_TODEVICE);
2439         }
2440
2441         pci_unmap_single(qdev->pdev,
2442                          dma_unmap_addr(&tx_cb->map[0], mapaddr),
2443                          dma_unmap_addr(&tx_cb->map[0], maplen),
2444                          PCI_DMA_TODEVICE);
2445
2446         return NETDEV_TX_BUSY;
2447
2448 }
2449
2450 /*
2451  * The difference between 3022 and 3032 sends:
2452  * 3022 only supports a simple single segment transmission.
2453  * 3032 supports checksumming and scatter/gather lists (fragments).
2454  * The 3032 supports sglists by using the 3 addr/len pairs (ALP)
2455  * in the IOCB plus a chain of outbound address lists (OAL) that
2456  * each contain 5 ALPs.  The last ALP of the IOCB (3rd) or OAL (5th)
2457  * will be used to point to an OAL when more ALP entries are required.
2458  * The IOCB is always the top of the chain followed by one or more
2459  * OALs (when necessary).
2460  */
2461 static netdev_tx_t ql3xxx_send(struct sk_buff *skb,
2462                                struct net_device *ndev)
2463 {
2464         struct ql3_adapter *qdev = netdev_priv(ndev);
2465         struct ql3xxx_port_registers __iomem *port_regs =
2466                         qdev->mem_map_registers;
2467         struct ql_tx_buf_cb *tx_cb;
2468         u32 tot_len = skb->len;
2469         struct ob_mac_iocb_req *mac_iocb_ptr;
2470
2471         if (unlikely(atomic_read(&qdev->tx_count) < 2))
2472                 return NETDEV_TX_BUSY;
2473
2474         tx_cb = &qdev->tx_buf[qdev->req_producer_index];
2475         tx_cb->seg_count = ql_get_seg_count(qdev,
2476                                              skb_shinfo(skb)->nr_frags);
2477         if (tx_cb->seg_count == -1) {
2478                 netdev_err(ndev, "%s: invalid segment count!\n", __func__);
2479                 return NETDEV_TX_OK;
2480         }
2481
2482         mac_iocb_ptr = tx_cb->queue_entry;
2483         memset((void *)mac_iocb_ptr, 0, sizeof(struct ob_mac_iocb_req));
2484         mac_iocb_ptr->opcode = qdev->mac_ob_opcode;
2485         mac_iocb_ptr->flags = OB_MAC_IOCB_REQ_X;
2486         mac_iocb_ptr->flags |= qdev->mb_bit_mask;
2487         mac_iocb_ptr->transaction_id = qdev->req_producer_index;
2488         mac_iocb_ptr->data_len = cpu_to_le16((u16) tot_len);
2489         tx_cb->skb = skb;
2490         if (qdev->device_id == QL3032_DEVICE_ID &&
2491             skb->ip_summed == CHECKSUM_PARTIAL)
2492                 ql_hw_csum_setup(skb, mac_iocb_ptr);
2493
2494         if (ql_send_map(qdev, mac_iocb_ptr, tx_cb, skb) != NETDEV_TX_OK) {
2495                 netdev_err(ndev, "%s: Could not map the segments!\n", __func__);
2496                 return NETDEV_TX_BUSY;
2497         }
2498
2499         wmb();
2500         qdev->req_producer_index++;
2501         if (qdev->req_producer_index == NUM_REQ_Q_ENTRIES)
2502                 qdev->req_producer_index = 0;
2503         wmb();
2504         ql_write_common_reg_l(qdev,
2505                             &port_regs->CommonRegs.reqQProducerIndex,
2506                             qdev->req_producer_index);
2507
2508         netif_printk(qdev, tx_queued, KERN_DEBUG, ndev,
2509                      "tx queued, slot %d, len %d\n",
2510                      qdev->req_producer_index, skb->len);
2511
2512         atomic_dec(&qdev->tx_count);
2513         return NETDEV_TX_OK;
2514 }
2515
2516 static int ql_alloc_net_req_rsp_queues(struct ql3_adapter *qdev)
2517 {
2518         qdev->req_q_size =
2519             (u32) (NUM_REQ_Q_ENTRIES * sizeof(struct ob_mac_iocb_req));
2520
2521         qdev->rsp_q_size = NUM_RSP_Q_ENTRIES * sizeof(struct net_rsp_iocb);
2522
2523         /* The barrier is required to ensure request and response queue
2524          * addr writes to the registers.
2525          */
2526         wmb();
2527
2528         qdev->req_q_virt_addr =
2529             pci_alloc_consistent(qdev->pdev,
2530                                  (size_t) qdev->req_q_size,
2531                                  &qdev->req_q_phy_addr);
2532
2533         if ((qdev->req_q_virt_addr == NULL) ||
2534             LS_64BITS(qdev->req_q_phy_addr) & (qdev->req_q_size - 1)) {
2535                 netdev_err(qdev->ndev, "reqQ failed\n");
2536                 return -ENOMEM;
2537         }
2538
2539         qdev->rsp_q_virt_addr =
2540             pci_alloc_consistent(qdev->pdev,
2541                                  (size_t) qdev->rsp_q_size,
2542                                  &qdev->rsp_q_phy_addr);
2543
2544         if ((qdev->rsp_q_virt_addr == NULL) ||
2545             LS_64BITS(qdev->rsp_q_phy_addr) & (qdev->rsp_q_size - 1)) {
2546                 netdev_err(qdev->ndev, "rspQ allocation failed\n");
2547                 pci_free_consistent(qdev->pdev, (size_t) qdev->req_q_size,
2548                                     qdev->req_q_virt_addr,
2549                                     qdev->req_q_phy_addr);
2550                 return -ENOMEM;
2551         }
2552
2553         set_bit(QL_ALLOC_REQ_RSP_Q_DONE, &qdev->flags);
2554
2555         return 0;
2556 }
2557
2558 static void ql_free_net_req_rsp_queues(struct ql3_adapter *qdev)
2559 {
2560         if (!test_bit(QL_ALLOC_REQ_RSP_Q_DONE, &qdev->flags)) {
2561                 netdev_info(qdev->ndev, "Already done\n");
2562                 return;
2563         }
2564
2565         pci_free_consistent(qdev->pdev,
2566                             qdev->req_q_size,
2567                             qdev->req_q_virt_addr, qdev->req_q_phy_addr);
2568
2569         qdev->req_q_virt_addr = NULL;
2570
2571         pci_free_consistent(qdev->pdev,
2572                             qdev->rsp_q_size,
2573                             qdev->rsp_q_virt_addr, qdev->rsp_q_phy_addr);
2574
2575         qdev->rsp_q_virt_addr = NULL;
2576
2577         clear_bit(QL_ALLOC_REQ_RSP_Q_DONE, &qdev->flags);
2578 }
2579
2580 static int ql_alloc_buffer_queues(struct ql3_adapter *qdev)
2581 {
2582         /* Create Large Buffer Queue */
2583         qdev->lrg_buf_q_size =
2584                 qdev->num_lbufq_entries * sizeof(struct lrg_buf_q_entry);
2585         if (qdev->lrg_buf_q_size < PAGE_SIZE)
2586                 qdev->lrg_buf_q_alloc_size = PAGE_SIZE;
2587         else
2588                 qdev->lrg_buf_q_alloc_size = qdev->lrg_buf_q_size * 2;
2589
2590         qdev->lrg_buf = kmalloc_array(qdev->num_large_buffers,
2591                                       sizeof(struct ql_rcv_buf_cb),
2592                                       GFP_KERNEL);
2593         if (qdev->lrg_buf == NULL)
2594                 return -ENOMEM;
2595
2596         qdev->lrg_buf_q_alloc_virt_addr =
2597                 pci_alloc_consistent(qdev->pdev,
2598                                      qdev->lrg_buf_q_alloc_size,
2599                                      &qdev->lrg_buf_q_alloc_phy_addr);
2600
2601         if (qdev->lrg_buf_q_alloc_virt_addr == NULL) {
2602                 netdev_err(qdev->ndev, "lBufQ failed\n");
2603                 return -ENOMEM;
2604         }
2605         qdev->lrg_buf_q_virt_addr = qdev->lrg_buf_q_alloc_virt_addr;
2606         qdev->lrg_buf_q_phy_addr = qdev->lrg_buf_q_alloc_phy_addr;
2607
2608         /* Create Small Buffer Queue */
2609         qdev->small_buf_q_size =
2610                 NUM_SBUFQ_ENTRIES * sizeof(struct lrg_buf_q_entry);
2611         if (qdev->small_buf_q_size < PAGE_SIZE)
2612                 qdev->small_buf_q_alloc_size = PAGE_SIZE;
2613         else
2614                 qdev->small_buf_q_alloc_size = qdev->small_buf_q_size * 2;
2615
2616         qdev->small_buf_q_alloc_virt_addr =
2617                 pci_alloc_consistent(qdev->pdev,
2618                                      qdev->small_buf_q_alloc_size,
2619                                      &qdev->small_buf_q_alloc_phy_addr);
2620
2621         if (qdev->small_buf_q_alloc_virt_addr == NULL) {
2622                 netdev_err(qdev->ndev, "Small Buffer Queue allocation failed\n");
2623                 pci_free_consistent(qdev->pdev, qdev->lrg_buf_q_alloc_size,
2624                                     qdev->lrg_buf_q_alloc_virt_addr,
2625                                     qdev->lrg_buf_q_alloc_phy_addr);
2626                 return -ENOMEM;
2627         }
2628
2629         qdev->small_buf_q_virt_addr = qdev->small_buf_q_alloc_virt_addr;
2630         qdev->small_buf_q_phy_addr = qdev->small_buf_q_alloc_phy_addr;
2631         set_bit(QL_ALLOC_BUFQS_DONE, &qdev->flags);
2632         return 0;
2633 }
2634
2635 static void ql_free_buffer_queues(struct ql3_adapter *qdev)
2636 {
2637         if (!test_bit(QL_ALLOC_BUFQS_DONE, &qdev->flags)) {
2638                 netdev_info(qdev->ndev, "Already done\n");
2639                 return;
2640         }
2641         kfree(qdev->lrg_buf);
2642         pci_free_consistent(qdev->pdev,
2643                             qdev->lrg_buf_q_alloc_size,
2644                             qdev->lrg_buf_q_alloc_virt_addr,
2645                             qdev->lrg_buf_q_alloc_phy_addr);
2646
2647         qdev->lrg_buf_q_virt_addr = NULL;
2648
2649         pci_free_consistent(qdev->pdev,
2650                             qdev->small_buf_q_alloc_size,
2651                             qdev->small_buf_q_alloc_virt_addr,
2652                             qdev->small_buf_q_alloc_phy_addr);
2653
2654         qdev->small_buf_q_virt_addr = NULL;
2655
2656         clear_bit(QL_ALLOC_BUFQS_DONE, &qdev->flags);
2657 }
2658
2659 static int ql_alloc_small_buffers(struct ql3_adapter *qdev)
2660 {
2661         int i;
2662         struct bufq_addr_element *small_buf_q_entry;
2663
2664         /* Currently we allocate on one of memory and use it for smallbuffers */
2665         qdev->small_buf_total_size =
2666                 (QL_ADDR_ELE_PER_BUFQ_ENTRY * NUM_SBUFQ_ENTRIES *
2667                  QL_SMALL_BUFFER_SIZE);
2668
2669         qdev->small_buf_virt_addr =
2670                 pci_alloc_consistent(qdev->pdev,
2671                                      qdev->small_buf_total_size,
2672                                      &qdev->small_buf_phy_addr);
2673
2674         if (qdev->small_buf_virt_addr == NULL) {
2675                 netdev_err(qdev->ndev, "Failed to get small buffer memory\n");
2676                 return -ENOMEM;
2677         }
2678
2679         qdev->small_buf_phy_addr_low = LS_64BITS(qdev->small_buf_phy_addr);
2680         qdev->small_buf_phy_addr_high = MS_64BITS(qdev->small_buf_phy_addr);
2681
2682         small_buf_q_entry = qdev->small_buf_q_virt_addr;
2683
2684         /* Initialize the small buffer queue. */
2685         for (i = 0; i < (QL_ADDR_ELE_PER_BUFQ_ENTRY * NUM_SBUFQ_ENTRIES); i++) {
2686                 small_buf_q_entry->addr_high =
2687                     cpu_to_le32(qdev->small_buf_phy_addr_high);
2688                 small_buf_q_entry->addr_low =
2689                     cpu_to_le32(qdev->small_buf_phy_addr_low +
2690                                 (i * QL_SMALL_BUFFER_SIZE));
2691                 small_buf_q_entry++;
2692         }
2693         qdev->small_buf_index = 0;
2694         set_bit(QL_ALLOC_SMALL_BUF_DONE, &qdev->flags);
2695         return 0;
2696 }
2697
2698 static void ql_free_small_buffers(struct ql3_adapter *qdev)
2699 {
2700         if (!test_bit(QL_ALLOC_SMALL_BUF_DONE, &qdev->flags)) {
2701                 netdev_info(qdev->ndev, "Already done\n");
2702                 return;
2703         }
2704         if (qdev->small_buf_virt_addr != NULL) {
2705                 pci_free_consistent(qdev->pdev,
2706                                     qdev->small_buf_total_size,
2707                                     qdev->small_buf_virt_addr,
2708                                     qdev->small_buf_phy_addr);
2709
2710                 qdev->small_buf_virt_addr = NULL;
2711         }
2712 }
2713
2714 static void ql_free_large_buffers(struct ql3_adapter *qdev)
2715 {
2716         int i = 0;
2717         struct ql_rcv_buf_cb *lrg_buf_cb;
2718
2719         for (i = 0; i < qdev->num_large_buffers; i++) {
2720                 lrg_buf_cb = &qdev->lrg_buf[i];
2721                 if (lrg_buf_cb->skb) {
2722                         dev_kfree_skb(lrg_buf_cb->skb);
2723                         pci_unmap_single(qdev->pdev,
2724                                          dma_unmap_addr(lrg_buf_cb, mapaddr),
2725                                          dma_unmap_len(lrg_buf_cb, maplen),
2726                                          PCI_DMA_FROMDEVICE);
2727                         memset(lrg_buf_cb, 0, sizeof(struct ql_rcv_buf_cb));
2728                 } else {
2729                         break;
2730                 }
2731         }
2732 }
2733
2734 static void ql_init_large_buffers(struct ql3_adapter *qdev)
2735 {
2736         int i;
2737         struct ql_rcv_buf_cb *lrg_buf_cb;
2738         struct bufq_addr_element *buf_addr_ele = qdev->lrg_buf_q_virt_addr;
2739
2740         for (i = 0; i < qdev->num_large_buffers; i++) {
2741                 lrg_buf_cb = &qdev->lrg_buf[i];
2742                 buf_addr_ele->addr_high = lrg_buf_cb->buf_phy_addr_high;
2743                 buf_addr_ele->addr_low = lrg_buf_cb->buf_phy_addr_low;
2744                 buf_addr_ele++;
2745         }
2746         qdev->lrg_buf_index = 0;
2747         qdev->lrg_buf_skb_check = 0;
2748 }
2749
2750 static int ql_alloc_large_buffers(struct ql3_adapter *qdev)
2751 {
2752         int i;
2753         struct ql_rcv_buf_cb *lrg_buf_cb;
2754         struct sk_buff *skb;
2755         dma_addr_t map;
2756         int err;
2757
2758         for (i = 0; i < qdev->num_large_buffers; i++) {
2759                 lrg_buf_cb = &qdev->lrg_buf[i];
2760                 memset(lrg_buf_cb, 0, sizeof(struct ql_rcv_buf_cb));
2761
2762                 skb = netdev_alloc_skb(qdev->ndev,
2763                                        qdev->lrg_buffer_len);
2764                 if (unlikely(!skb)) {
2765                         /* Better luck next round */
2766                         netdev_err(qdev->ndev,
2767                                    "large buff alloc failed for %d bytes at index %d\n",
2768                                    qdev->lrg_buffer_len * 2, i);
2769                         ql_free_large_buffers(qdev);
2770                         return -ENOMEM;
2771                 } else {
2772                         lrg_buf_cb->index = i;
2773                         /*
2774                          * We save some space to copy the ethhdr from first
2775                          * buffer
2776                          */
2777                         skb_reserve(skb, QL_HEADER_SPACE);
2778                         map = pci_map_single(qdev->pdev,
2779                                              skb->data,
2780                                              qdev->lrg_buffer_len -
2781                                              QL_HEADER_SPACE,
2782                                              PCI_DMA_FROMDEVICE);
2783
2784                         err = pci_dma_mapping_error(qdev->pdev, map);
2785                         if (err) {
2786                                 netdev_err(qdev->ndev,
2787                                            "PCI mapping failed with error: %d\n",
2788                                            err);
2789                                 dev_kfree_skb_irq(skb);
2790                                 ql_free_large_buffers(qdev);
2791                                 return -ENOMEM;
2792                         }
2793
2794                         lrg_buf_cb->skb = skb;
2795                         dma_unmap_addr_set(lrg_buf_cb, mapaddr, map);
2796                         dma_unmap_len_set(lrg_buf_cb, maplen,
2797                                           qdev->lrg_buffer_len -
2798                                           QL_HEADER_SPACE);
2799                         lrg_buf_cb->buf_phy_addr_low =
2800                             cpu_to_le32(LS_64BITS(map));
2801                         lrg_buf_cb->buf_phy_addr_high =
2802                             cpu_to_le32(MS_64BITS(map));
2803                 }
2804         }
2805         return 0;
2806 }
2807
2808 static void ql_free_send_free_list(struct ql3_adapter *qdev)
2809 {
2810         struct ql_tx_buf_cb *tx_cb;
2811         int i;
2812
2813         tx_cb = &qdev->tx_buf[0];
2814         for (i = 0; i < NUM_REQ_Q_ENTRIES; i++) {
2815                 kfree(tx_cb->oal);
2816                 tx_cb->oal = NULL;
2817                 tx_cb++;
2818         }
2819 }
2820
2821 static int ql_create_send_free_list(struct ql3_adapter *qdev)
2822 {
2823         struct ql_tx_buf_cb *tx_cb;
2824         int i;
2825         struct ob_mac_iocb_req *req_q_curr = qdev->req_q_virt_addr;
2826
2827         /* Create free list of transmit buffers */
2828         for (i = 0; i < NUM_REQ_Q_ENTRIES; i++) {
2829
2830                 tx_cb = &qdev->tx_buf[i];
2831                 tx_cb->skb = NULL;
2832                 tx_cb->queue_entry = req_q_curr;
2833                 req_q_curr++;
2834                 tx_cb->oal = kmalloc(512, GFP_KERNEL);
2835                 if (tx_cb->oal == NULL)
2836                         return -ENOMEM;
2837         }
2838         return 0;
2839 }
2840
2841 static int ql_alloc_mem_resources(struct ql3_adapter *qdev)
2842 {
2843         if (qdev->ndev->mtu == NORMAL_MTU_SIZE) {
2844                 qdev->num_lbufq_entries = NUM_LBUFQ_ENTRIES;
2845                 qdev->lrg_buffer_len = NORMAL_MTU_SIZE;
2846         } else if (qdev->ndev->mtu == JUMBO_MTU_SIZE) {
2847                 /*
2848                  * Bigger buffers, so less of them.
2849                  */
2850                 qdev->num_lbufq_entries = JUMBO_NUM_LBUFQ_ENTRIES;
2851                 qdev->lrg_buffer_len = JUMBO_MTU_SIZE;
2852         } else {
2853                 netdev_err(qdev->ndev, "Invalid mtu size: %d.  Only %d and %d are accepted.\n",
2854                            qdev->ndev->mtu, NORMAL_MTU_SIZE, JUMBO_MTU_SIZE);
2855                 return -ENOMEM;
2856         }
2857         qdev->num_large_buffers =
2858                 qdev->num_lbufq_entries * QL_ADDR_ELE_PER_BUFQ_ENTRY;
2859         qdev->lrg_buffer_len += VLAN_ETH_HLEN + VLAN_ID_LEN + QL_HEADER_SPACE;
2860         qdev->max_frame_size =
2861                 (qdev->lrg_buffer_len - QL_HEADER_SPACE) + ETHERNET_CRC_SIZE;
2862
2863         /*
2864          * First allocate a page of shared memory and use it for shadow
2865          * locations of Network Request Queue Consumer Address Register and
2866          * Network Completion Queue Producer Index Register
2867          */
2868         qdev->shadow_reg_virt_addr =
2869                 pci_alloc_consistent(qdev->pdev,
2870                                      PAGE_SIZE, &qdev->shadow_reg_phy_addr);
2871
2872         if (qdev->shadow_reg_virt_addr != NULL) {
2873                 qdev->preq_consumer_index = qdev->shadow_reg_virt_addr;
2874                 qdev->req_consumer_index_phy_addr_high =
2875                         MS_64BITS(qdev->shadow_reg_phy_addr);
2876                 qdev->req_consumer_index_phy_addr_low =
2877                         LS_64BITS(qdev->shadow_reg_phy_addr);
2878
2879                 qdev->prsp_producer_index =
2880                         (__le32 *) (((u8 *) qdev->preq_consumer_index) + 8);
2881                 qdev->rsp_producer_index_phy_addr_high =
2882                         qdev->req_consumer_index_phy_addr_high;
2883                 qdev->rsp_producer_index_phy_addr_low =
2884                         qdev->req_consumer_index_phy_addr_low + 8;
2885         } else {
2886                 netdev_err(qdev->ndev, "shadowReg Alloc failed\n");
2887                 return -ENOMEM;
2888         }
2889
2890         if (ql_alloc_net_req_rsp_queues(qdev) != 0) {
2891                 netdev_err(qdev->ndev, "ql_alloc_net_req_rsp_queues failed\n");
2892                 goto err_req_rsp;
2893         }
2894
2895         if (ql_alloc_buffer_queues(qdev) != 0) {
2896                 netdev_err(qdev->ndev, "ql_alloc_buffer_queues failed\n");
2897                 goto err_buffer_queues;
2898         }
2899
2900         if (ql_alloc_small_buffers(qdev) != 0) {
2901                 netdev_err(qdev->ndev, "ql_alloc_small_buffers failed\n");
2902                 goto err_small_buffers;
2903         }
2904
2905         if (ql_alloc_large_buffers(qdev) != 0) {
2906                 netdev_err(qdev->ndev, "ql_alloc_large_buffers failed\n");
2907                 goto err_small_buffers;
2908         }
2909
2910         /* Initialize the large buffer queue. */
2911         ql_init_large_buffers(qdev);
2912         if (ql_create_send_free_list(qdev))
2913                 goto err_free_list;
2914
2915         qdev->rsp_current = qdev->rsp_q_virt_addr;
2916
2917         return 0;
2918 err_free_list:
2919         ql_free_send_free_list(qdev);
2920 err_small_buffers:
2921         ql_free_buffer_queues(qdev);
2922 err_buffer_queues:
2923         ql_free_net_req_rsp_queues(qdev);
2924 err_req_rsp:
2925         pci_free_consistent(qdev->pdev,
2926                             PAGE_SIZE,
2927                             qdev->shadow_reg_virt_addr,
2928                             qdev->shadow_reg_phy_addr);
2929
2930         return -ENOMEM;
2931 }
2932
2933 static void ql_free_mem_resources(struct ql3_adapter *qdev)
2934 {
2935         ql_free_send_free_list(qdev);
2936         ql_free_large_buffers(qdev);
2937         ql_free_small_buffers(qdev);
2938         ql_free_buffer_queues(qdev);
2939         ql_free_net_req_rsp_queues(qdev);
2940         if (qdev->shadow_reg_virt_addr != NULL) {
2941                 pci_free_consistent(qdev->pdev,
2942                                     PAGE_SIZE,
2943                                     qdev->shadow_reg_virt_addr,
2944                                     qdev->shadow_reg_phy_addr);
2945                 qdev->shadow_reg_virt_addr = NULL;
2946         }
2947 }
2948
2949 static int ql_init_misc_registers(struct ql3_adapter *qdev)
2950 {
2951         struct ql3xxx_local_ram_registers __iomem *local_ram =
2952             (void __iomem *)qdev->mem_map_registers;
2953
2954         if (ql_sem_spinlock(qdev, QL_DDR_RAM_SEM_MASK,
2955                         (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index) *
2956                          2) << 4))
2957                 return -1;
2958
2959         ql_write_page2_reg(qdev,
2960                            &local_ram->bufletSize, qdev->nvram_data.bufletSize);
2961
2962         ql_write_page2_reg(qdev,
2963                            &local_ram->maxBufletCount,
2964                            qdev->nvram_data.bufletCount);
2965
2966         ql_write_page2_reg(qdev,
2967                            &local_ram->freeBufletThresholdLow,
2968                            (qdev->nvram_data.tcpWindowThreshold25 << 16) |
2969                            (qdev->nvram_data.tcpWindowThreshold0));
2970
2971         ql_write_page2_reg(qdev,
2972                            &local_ram->freeBufletThresholdHigh,
2973                            qdev->nvram_data.tcpWindowThreshold50);
2974
2975         ql_write_page2_reg(qdev,
2976                            &local_ram->ipHashTableBase,
2977                            (qdev->nvram_data.ipHashTableBaseHi << 16) |
2978                            qdev->nvram_data.ipHashTableBaseLo);
2979         ql_write_page2_reg(qdev,
2980                            &local_ram->ipHashTableCount,
2981                            qdev->nvram_data.ipHashTableSize);
2982         ql_write_page2_reg(qdev,
2983                            &local_ram->tcpHashTableBase,
2984                            (qdev->nvram_data.tcpHashTableBaseHi << 16) |
2985                            qdev->nvram_data.tcpHashTableBaseLo);
2986         ql_write_page2_reg(qdev,
2987                            &local_ram->tcpHashTableCount,
2988                            qdev->nvram_data.tcpHashTableSize);
2989         ql_write_page2_reg(qdev,
2990                            &local_ram->ncbBase,
2991                            (qdev->nvram_data.ncbTableBaseHi << 16) |
2992                            qdev->nvram_data.ncbTableBaseLo);
2993         ql_write_page2_reg(qdev,
2994                            &local_ram->maxNcbCount,
2995                            qdev->nvram_data.ncbTableSize);
2996         ql_write_page2_reg(qdev,
2997                            &local_ram->drbBase,
2998                            (qdev->nvram_data.drbTableBaseHi << 16) |
2999                            qdev->nvram_data.drbTableBaseLo);
3000         ql_write_page2_reg(qdev,
3001                            &local_ram->maxDrbCount,
3002                            qdev->nvram_data.drbTableSize);
3003         ql_sem_unlock(qdev, QL_DDR_RAM_SEM_MASK);
3004         return 0;
3005 }
3006
3007 static int ql_adapter_initialize(struct ql3_adapter *qdev)
3008 {
3009         u32 value;
3010         struct ql3xxx_port_registers __iomem *port_regs =
3011                 qdev->mem_map_registers;
3012         __iomem u32 *spir = &port_regs->CommonRegs.serialPortInterfaceReg;
3013         struct ql3xxx_host_memory_registers __iomem *hmem_regs =
3014                 (void __iomem *)port_regs;
3015         u32 delay = 10;
3016         int status = 0;
3017
3018         if (ql_mii_setup(qdev))
3019                 return -1;
3020
3021         /* Bring out PHY out of reset */
3022         ql_write_common_reg(qdev, spir,
3023                             (ISP_SERIAL_PORT_IF_WE |
3024                              (ISP_SERIAL_PORT_IF_WE << 16)));
3025         /* Give the PHY time to come out of reset. */
3026         mdelay(100);
3027         qdev->port_link_state = LS_DOWN;
3028         netif_carrier_off(qdev->ndev);
3029
3030         /* V2 chip fix for ARS-39168. */
3031         ql_write_common_reg(qdev, spir,
3032                             (ISP_SERIAL_PORT_IF_SDE |
3033                              (ISP_SERIAL_PORT_IF_SDE << 16)));
3034
3035         /* Request Queue Registers */
3036         *((u32 *)(qdev->preq_consumer_index)) = 0;
3037         atomic_set(&qdev->tx_count, NUM_REQ_Q_ENTRIES);
3038         qdev->req_producer_index = 0;
3039
3040         ql_write_page1_reg(qdev,
3041                            &hmem_regs->reqConsumerIndexAddrHigh,
3042                            qdev->req_consumer_index_phy_addr_high);
3043         ql_write_page1_reg(qdev,
3044                            &hmem_regs->reqConsumerIndexAddrLow,
3045                            qdev->req_consumer_index_phy_addr_low);
3046
3047         ql_write_page1_reg(qdev,
3048                            &hmem_regs->reqBaseAddrHigh,
3049                            MS_64BITS(qdev->req_q_phy_addr));
3050         ql_write_page1_reg(qdev,
3051                            &hmem_regs->reqBaseAddrLow,
3052                            LS_64BITS(qdev->req_q_phy_addr));
3053         ql_write_page1_reg(qdev, &hmem_regs->reqLength, NUM_REQ_Q_ENTRIES);
3054
3055         /* Response Queue Registers */
3056         *((__le16 *) (qdev->prsp_producer_index)) = 0;
3057         qdev->rsp_consumer_index = 0;
3058         qdev->rsp_current = qdev->rsp_q_virt_addr;
3059
3060         ql_write_page1_reg(qdev,
3061                            &hmem_regs->rspProducerIndexAddrHigh,
3062                            qdev->rsp_producer_index_phy_addr_high);
3063
3064         ql_write_page1_reg(qdev,
3065                            &hmem_regs->rspProducerIndexAddrLow,
3066                            qdev->rsp_producer_index_phy_addr_low);
3067
3068         ql_write_page1_reg(qdev,
3069                            &hmem_regs->rspBaseAddrHigh,
3070                            MS_64BITS(qdev->rsp_q_phy_addr));
3071
3072         ql_write_page1_reg(qdev,
3073                            &hmem_regs->rspBaseAddrLow,
3074                            LS_64BITS(qdev->rsp_q_phy_addr));
3075
3076         ql_write_page1_reg(qdev, &hmem_regs->rspLength, NUM_RSP_Q_ENTRIES);
3077
3078         /* Large Buffer Queue */
3079         ql_write_page1_reg(qdev,
3080                            &hmem_regs->rxLargeQBaseAddrHigh,
3081                            MS_64BITS(qdev->lrg_buf_q_phy_addr));
3082
3083         ql_write_page1_reg(qdev,
3084                            &hmem_regs->rxLargeQBaseAddrLow,
3085                            LS_64BITS(qdev->lrg_buf_q_phy_addr));
3086
3087         ql_write_page1_reg(qdev,
3088                            &hmem_regs->rxLargeQLength,
3089                            qdev->num_lbufq_entries);
3090
3091         ql_write_page1_reg(qdev,
3092                            &hmem_regs->rxLargeBufferLength,
3093                            qdev->lrg_buffer_len);
3094
3095         /* Small Buffer Queue */
3096         ql_write_page1_reg(qdev,
3097                            &hmem_regs->rxSmallQBaseAddrHigh,
3098                            MS_64BITS(qdev->small_buf_q_phy_addr));
3099
3100         ql_write_page1_reg(qdev,
3101                            &hmem_regs->rxSmallQBaseAddrLow,
3102                            LS_64BITS(qdev->small_buf_q_phy_addr));
3103
3104         ql_write_page1_reg(qdev, &hmem_regs->rxSmallQLength, NUM_SBUFQ_ENTRIES);
3105         ql_write_page1_reg(qdev,
3106                            &hmem_regs->rxSmallBufferLength,
3107                            QL_SMALL_BUFFER_SIZE);
3108
3109         qdev->small_buf_q_producer_index = NUM_SBUFQ_ENTRIES - 1;
3110         qdev->small_buf_release_cnt = 8;
3111         qdev->lrg_buf_q_producer_index = qdev->num_lbufq_entries - 1;
3112         qdev->lrg_buf_release_cnt = 8;
3113         qdev->lrg_buf_next_free = qdev->lrg_buf_q_virt_addr;
3114         qdev->small_buf_index = 0;
3115         qdev->lrg_buf_index = 0;
3116         qdev->lrg_buf_free_count = 0;
3117         qdev->lrg_buf_free_head = NULL;
3118         qdev->lrg_buf_free_tail = NULL;
3119
3120         ql_write_common_reg(qdev,
3121                             &port_regs->CommonRegs.
3122                             rxSmallQProducerIndex,
3123                             qdev->small_buf_q_producer_index);
3124         ql_write_common_reg(qdev,
3125                             &port_regs->CommonRegs.
3126                             rxLargeQProducerIndex,
3127                             qdev->lrg_buf_q_producer_index);
3128
3129         /*
3130          * Find out if the chip has already been initialized.  If it has, then
3131          * we skip some of the initialization.
3132          */
3133         clear_bit(QL_LINK_MASTER, &qdev->flags);
3134         value = ql_read_page0_reg(qdev, &port_regs->portStatus);
3135         if ((value & PORT_STATUS_IC) == 0) {
3136
3137                 /* Chip has not been configured yet, so let it rip. */
3138                 if (ql_init_misc_registers(qdev)) {
3139                         status = -1;
3140                         goto out;
3141                 }
3142
3143                 value = qdev->nvram_data.tcpMaxWindowSize;
3144                 ql_write_page0_reg(qdev, &port_regs->tcpMaxWindow, value);
3145
3146                 value = (0xFFFF << 16) | qdev->nvram_data.extHwConfig;
3147
3148                 if (ql_sem_spinlock(qdev, QL_FLASH_SEM_MASK,
3149                                 (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index)
3150                                  * 2) << 13)) {
3151                         status = -1;
3152                         goto out;
3153                 }
3154                 ql_write_page0_reg(qdev, &port_regs->ExternalHWConfig, value);
3155                 ql_write_page0_reg(qdev, &port_regs->InternalChipConfig,
3156                                    (((INTERNAL_CHIP_SD | INTERNAL_CHIP_WE) <<
3157                                      16) | (INTERNAL_CHIP_SD |
3158                                             INTERNAL_CHIP_WE)));
3159                 ql_sem_unlock(qdev, QL_FLASH_SEM_MASK);
3160         }
3161
3162         if (qdev->mac_index)
3163                 ql_write_page0_reg(qdev,
3164                                    &port_regs->mac1MaxFrameLengthReg,
3165                                    qdev->max_frame_size);
3166         else
3167                 ql_write_page0_reg(qdev,
3168                                            &port_regs->mac0MaxFrameLengthReg,
3169                                            qdev->max_frame_size);
3170
3171         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
3172                         (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index) *
3173                          2) << 7)) {
3174                 status = -1;
3175                 goto out;
3176         }
3177
3178         PHY_Setup(qdev);
3179         ql_init_scan_mode(qdev);
3180         ql_get_phy_owner(qdev);
3181
3182         /* Load the MAC Configuration */
3183
3184         /* Program lower 32 bits of the MAC address */
3185         ql_write_page0_reg(qdev, &port_regs->macAddrIndirectPtrReg,
3186                            (MAC_ADDR_INDIRECT_PTR_REG_RP_MASK << 16));
3187         ql_write_page0_reg(qdev, &port_regs->macAddrDataReg,
3188                            ((qdev->ndev->dev_addr[2] << 24)
3189                             | (qdev->ndev->dev_addr[3] << 16)
3190                             | (qdev->ndev->dev_addr[4] << 8)
3191                             | qdev->ndev->dev_addr[5]));
3192
3193         /* Program top 16 bits of the MAC address */
3194         ql_write_page0_reg(qdev, &port_regs->macAddrIndirectPtrReg,
3195                            ((MAC_ADDR_INDIRECT_PTR_REG_RP_MASK << 16) | 1));
3196         ql_write_page0_reg(qdev, &port_regs->macAddrDataReg,
3197                            ((qdev->ndev->dev_addr[0] << 8)
3198                             | qdev->ndev->dev_addr[1]));
3199
3200         /* Enable Primary MAC */
3201         ql_write_page0_reg(qdev, &port_regs->macAddrIndirectPtrReg,
3202                            ((MAC_ADDR_INDIRECT_PTR_REG_PE << 16) |
3203                             MAC_ADDR_INDIRECT_PTR_REG_PE));
3204
3205         /* Clear Primary and Secondary IP addresses */
3206         ql_write_page0_reg(qdev, &port_regs->ipAddrIndexReg,
3207                            ((IP_ADDR_INDEX_REG_MASK << 16) |
3208                             (qdev->mac_index << 2)));
3209         ql_write_page0_reg(qdev, &port_regs->ipAddrDataReg, 0);
3210
3211         ql_write_page0_reg(qdev, &port_regs->ipAddrIndexReg,
3212                            ((IP_ADDR_INDEX_REG_MASK << 16) |
3213                             ((qdev->mac_index << 2) + 1)));
3214         ql_write_page0_reg(qdev, &port_regs->ipAddrDataReg, 0);
3215
3216         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
3217
3218         /* Indicate Configuration Complete */
3219         ql_write_page0_reg(qdev,
3220                            &port_regs->portControl,
3221                            ((PORT_CONTROL_CC << 16) | PORT_CONTROL_CC));
3222
3223         do {
3224                 value = ql_read_page0_reg(qdev, &port_regs->portStatus);
3225                 if (value & PORT_STATUS_IC)
3226                         break;
3227                 spin_unlock_irq(&qdev->hw_lock);
3228                 msleep(500);
3229                 spin_lock_irq(&qdev->hw_lock);
3230         } while (--delay);
3231
3232         if (delay == 0) {
3233                 netdev_err(qdev->ndev, "Hw Initialization timeout\n");
3234                 status = -1;
3235                 goto out;
3236         }
3237
3238         /* Enable Ethernet Function */
3239         if (qdev->device_id == QL3032_DEVICE_ID) {
3240                 value =
3241                     (QL3032_PORT_CONTROL_EF | QL3032_PORT_CONTROL_KIE |
3242                      QL3032_PORT_CONTROL_EIv6 | QL3032_PORT_CONTROL_EIv4 |
3243                         QL3032_PORT_CONTROL_ET);
3244                 ql_write_page0_reg(qdev, &port_regs->functionControl,
3245                                    ((value << 16) | value));
3246         } else {
3247                 value =
3248                     (PORT_CONTROL_EF | PORT_CONTROL_ET | PORT_CONTROL_EI |
3249                      PORT_CONTROL_HH);
3250                 ql_write_page0_reg(qdev, &port_regs->portControl,
3251                                    ((value << 16) | value));
3252         }
3253
3254
3255 out:
3256         return status;
3257 }
3258
3259 /*
3260  * Caller holds hw_lock.
3261  */
3262 static int ql_adapter_reset(struct ql3_adapter *qdev)
3263 {
3264         struct ql3xxx_port_registers __iomem *port_regs =
3265                 qdev->mem_map_registers;
3266         int status = 0;
3267         u16 value;
3268         int max_wait_time;
3269
3270         set_bit(QL_RESET_ACTIVE, &qdev->flags);
3271         clear_bit(QL_RESET_DONE, &qdev->flags);
3272
3273         /*
3274          * Issue soft reset to chip.
3275          */
3276         netdev_printk(KERN_DEBUG, qdev->ndev, "Issue soft reset to chip\n");
3277         ql_write_common_reg(qdev,
3278                             &port_regs->CommonRegs.ispControlStatus,
3279                             ((ISP_CONTROL_SR << 16) | ISP_CONTROL_SR));
3280
3281         /* Wait 3 seconds for reset to complete. */
3282         netdev_printk(KERN_DEBUG, qdev->ndev,
3283                       "Wait 10 milliseconds for reset to complete\n");
3284
3285         /* Wait until the firmware tells us the Soft Reset is done */
3286         max_wait_time = 5;
3287         do {
3288                 value =
3289                     ql_read_common_reg(qdev,
3290                                        &port_regs->CommonRegs.ispControlStatus);
3291                 if ((value & ISP_CONTROL_SR) == 0)
3292                         break;
3293
3294                 ssleep(1);
3295         } while ((--max_wait_time));
3296
3297         /*
3298          * Also, make sure that the Network Reset Interrupt bit has been
3299          * cleared after the soft reset has taken place.
3300          */
3301         value =
3302             ql_read_common_reg(qdev, &port_regs->CommonRegs.ispControlStatus);
3303         if (value & ISP_CONTROL_RI) {
3304                 netdev_printk(KERN_DEBUG, qdev->ndev,
3305                               "clearing RI after reset\n");
3306                 ql_write_common_reg(qdev,
3307                                     &port_regs->CommonRegs.
3308                                     ispControlStatus,
3309                                     ((ISP_CONTROL_RI << 16) | ISP_CONTROL_RI));
3310         }
3311
3312         if (max_wait_time == 0) {
3313                 /* Issue Force Soft Reset */
3314                 ql_write_common_reg(qdev,
3315                                     &port_regs->CommonRegs.
3316                                     ispControlStatus,
3317                                     ((ISP_CONTROL_FSR << 16) |
3318                                      ISP_CONTROL_FSR));
3319                 /*
3320                  * Wait until the firmware tells us the Force Soft Reset is
3321                  * done
3322                  */
3323                 max_wait_time = 5;
3324                 do {
3325                         value = ql_read_common_reg(qdev,
3326                                                    &port_regs->CommonRegs.
3327                                                    ispControlStatus);
3328                         if ((value & ISP_CONTROL_FSR) == 0)
3329                                 break;
3330                         ssleep(1);
3331                 } while ((--max_wait_time));
3332         }
3333         if (max_wait_time == 0)
3334                 status = 1;
3335
3336         clear_bit(QL_RESET_ACTIVE, &qdev->flags);
3337         set_bit(QL_RESET_DONE, &qdev->flags);
3338         return status;
3339 }
3340
3341 static void ql_set_mac_info(struct ql3_adapter *qdev)
3342 {
3343         struct ql3xxx_port_registers __iomem *port_regs =
3344                 qdev->mem_map_registers;
3345         u32 value, port_status;
3346         u8 func_number;
3347
3348         /* Get the function number */
3349         value =
3350             ql_read_common_reg_l(qdev, &port_regs->CommonRegs.ispControlStatus);
3351         func_number = (u8) ((value >> 4) & OPCODE_FUNC_ID_MASK);
3352         port_status = ql_read_page0_reg(qdev, &port_regs->portStatus);
3353         switch (value & ISP_CONTROL_FN_MASK) {
3354         case ISP_CONTROL_FN0_NET:
3355                 qdev->mac_index = 0;
3356                 qdev->mac_ob_opcode = OUTBOUND_MAC_IOCB | func_number;
3357                 qdev->mb_bit_mask = FN0_MA_BITS_MASK;
3358                 qdev->PHYAddr = PORT0_PHY_ADDRESS;
3359                 if (port_status & PORT_STATUS_SM0)
3360                         set_bit(QL_LINK_OPTICAL, &qdev->flags);
3361                 else
3362                         clear_bit(QL_LINK_OPTICAL, &qdev->flags);
3363                 break;
3364
3365         case ISP_CONTROL_FN1_NET:
3366                 qdev->mac_index = 1;
3367                 qdev->mac_ob_opcode = OUTBOUND_MAC_IOCB | func_number;
3368                 qdev->mb_bit_mask = FN1_MA_BITS_MASK;
3369                 qdev->PHYAddr = PORT1_PHY_ADDRESS;
3370                 if (port_status & PORT_STATUS_SM1)
3371                         set_bit(QL_LINK_OPTICAL, &qdev->flags);
3372                 else
3373                         clear_bit(QL_LINK_OPTICAL, &qdev->flags);
3374                 break;
3375
3376         case ISP_CONTROL_FN0_SCSI:
3377         case ISP_CONTROL_FN1_SCSI:
3378         default:
3379                 netdev_printk(KERN_DEBUG, qdev->ndev,
3380                               "Invalid function number, ispControlStatus = 0x%x\n",
3381                               value);
3382                 break;
3383         }
3384         qdev->numPorts = qdev->nvram_data.version_and_numPorts >> 8;
3385 }
3386
3387 static void ql_display_dev_info(struct net_device *ndev)
3388 {
3389         struct ql3_adapter *qdev = netdev_priv(ndev);
3390         struct pci_dev *pdev = qdev->pdev;
3391
3392         netdev_info(ndev,
3393                     "%s Adapter %d RevisionID %d found %s on PCI slot %d\n",
3394                     DRV_NAME, qdev->index, qdev->chip_rev_id,
3395                     qdev->device_id == QL3032_DEVICE_ID ? "QLA3032" : "QLA3022",
3396                     qdev->pci_slot);
3397         netdev_info(ndev, "%s Interface\n",
3398                 test_bit(QL_LINK_OPTICAL, &qdev->flags) ? "OPTICAL" : "COPPER");
3399
3400         /*
3401          * Print PCI bus width/type.
3402          */
3403         netdev_info(ndev, "Bus interface is %s %s\n",
3404                     ((qdev->pci_width == 64) ? "64-bit" : "32-bit"),
3405                     ((qdev->pci_x) ? "PCI-X" : "PCI"));
3406
3407         netdev_info(ndev, "mem  IO base address adjusted = 0x%p\n",
3408                     qdev->mem_map_registers);
3409         netdev_info(ndev, "Interrupt number = %d\n", pdev->irq);
3410
3411         netif_info(qdev, probe, ndev, "MAC address %pM\n", ndev->dev_addr);
3412 }
3413
3414 static int ql_adapter_down(struct ql3_adapter *qdev, int do_reset)
3415 {
3416         struct net_device *ndev = qdev->ndev;
3417         int retval = 0;
3418
3419         netif_stop_queue(ndev);
3420         netif_carrier_off(ndev);
3421
3422         clear_bit(QL_ADAPTER_UP, &qdev->flags);
3423         clear_bit(QL_LINK_MASTER, &qdev->flags);
3424
3425         ql_disable_interrupts(qdev);
3426
3427         free_irq(qdev->pdev->irq, ndev);
3428
3429         if (qdev->msi && test_bit(QL_MSI_ENABLED, &qdev->flags)) {
3430                 netdev_info(qdev->ndev, "calling pci_disable_msi()\n");
3431                 clear_bit(QL_MSI_ENABLED, &qdev->flags);
3432                 pci_disable_msi(qdev->pdev);
3433         }
3434
3435         del_timer_sync(&qdev->adapter_timer);
3436
3437         napi_disable(&qdev->napi);
3438
3439         if (do_reset) {
3440                 int soft_reset;
3441                 unsigned long hw_flags;
3442
3443                 spin_lock_irqsave(&qdev->hw_lock, hw_flags);
3444                 if (ql_wait_for_drvr_lock(qdev)) {
3445                         soft_reset = ql_adapter_reset(qdev);
3446                         if (soft_reset) {
3447                                 netdev_err(ndev, "ql_adapter_reset(%d) FAILED!\n",
3448                                            qdev->index);
3449                         }
3450                         netdev_err(ndev,
3451                                    "Releasing driver lock via chip reset\n");
3452                 } else {
3453                         netdev_err(ndev,
3454                                    "Could not acquire driver lock to do reset!\n");
3455                         retval = -1;
3456                 }
3457                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
3458         }
3459         ql_free_mem_resources(qdev);
3460         return retval;
3461 }
3462
3463 static int ql_adapter_up(struct ql3_adapter *qdev)
3464 {
3465         struct net_device *ndev = qdev->ndev;
3466         int err;
3467         unsigned long irq_flags = IRQF_SHARED;
3468         unsigned long hw_flags;
3469
3470         if (ql_alloc_mem_resources(qdev)) {
3471                 netdev_err(ndev, "Unable to  allocate buffers\n");
3472                 return -ENOMEM;
3473         }
3474
3475         if (qdev->msi) {
3476                 if (pci_enable_msi(qdev->pdev)) {
3477                         netdev_err(ndev,
3478                                    "User requested MSI, but MSI failed to initialize.  Continuing without MSI.\n");
3479                         qdev->msi = 0;
3480                 } else {
3481                         netdev_info(ndev, "MSI Enabled...\n");
3482                         set_bit(QL_MSI_ENABLED, &qdev->flags);
3483                         irq_flags &= ~IRQF_SHARED;
3484                 }
3485         }
3486
3487         err = request_irq(qdev->pdev->irq, ql3xxx_isr,
3488                           irq_flags, ndev->name, ndev);
3489         if (err) {
3490                 netdev_err(ndev,
3491                            "Failed to reserve interrupt %d - already in use\n",
3492                            qdev->pdev->irq);
3493                 goto err_irq;
3494         }
3495
3496         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
3497
3498         err = ql_wait_for_drvr_lock(qdev);
3499         if (err) {
3500                 err = ql_adapter_initialize(qdev);
3501                 if (err) {
3502                         netdev_err(ndev, "Unable to initialize adapter\n");
3503                         goto err_init;
3504                 }
3505                 netdev_err(ndev, "Releasing driver lock\n");
3506                 ql_sem_unlock(qdev, QL_DRVR_SEM_MASK);
3507         } else {
3508                 netdev_err(ndev, "Could not acquire driver lock\n");
3509                 goto err_lock;
3510         }
3511
3512         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
3513
3514         set_bit(QL_ADAPTER_UP, &qdev->flags);
3515
3516         mod_timer(&qdev->adapter_timer, jiffies + HZ * 1);
3517
3518         napi_enable(&qdev->napi);
3519         ql_enable_interrupts(qdev);
3520         return 0;
3521
3522 err_init:
3523         ql_sem_unlock(qdev, QL_DRVR_SEM_MASK);
3524 err_lock:
3525         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
3526         free_irq(qdev->pdev->irq, ndev);
3527 err_irq:
3528         if (qdev->msi && test_bit(QL_MSI_ENABLED, &qdev->flags)) {
3529                 netdev_info(ndev, "calling pci_disable_msi()\n");
3530                 clear_bit(QL_MSI_ENABLED, &qdev->flags);
3531                 pci_disable_msi(qdev->pdev);
3532         }
3533         return err;
3534 }
3535
3536 static int ql_cycle_adapter(struct ql3_adapter *qdev, int reset)
3537 {
3538         if (ql_adapter_down(qdev, reset) || ql_adapter_up(qdev)) {
3539                 netdev_err(qdev->ndev,
3540                            "Driver up/down cycle failed, closing device\n");
3541                 rtnl_lock();
3542                 dev_close(qdev->ndev);
3543                 rtnl_unlock();
3544                 return -1;
3545         }
3546         return 0;
3547 }
3548
3549 static int ql3xxx_close(struct net_device *ndev)
3550 {
3551         struct ql3_adapter *qdev = netdev_priv(ndev);
3552
3553         /*
3554          * Wait for device to recover from a reset.
3555          * (Rarely happens, but possible.)
3556          */
3557         while (!test_bit(QL_ADAPTER_UP, &qdev->flags))
3558                 msleep(50);
3559
3560         ql_adapter_down(qdev, QL_DO_RESET);
3561         return 0;
3562 }
3563
3564 static int ql3xxx_open(struct net_device *ndev)
3565 {
3566         struct ql3_adapter *qdev = netdev_priv(ndev);
3567         return ql_adapter_up(qdev);
3568 }
3569
3570 static int ql3xxx_set_mac_address(struct net_device *ndev, void *p)
3571 {
3572         struct ql3_adapter *qdev = netdev_priv(ndev);
3573         struct ql3xxx_port_registers __iomem *port_regs =
3574                         qdev->mem_map_registers;
3575         struct sockaddr *addr = p;
3576         unsigned long hw_flags;
3577
3578         if (netif_running(ndev))
3579                 return -EBUSY;
3580
3581         if (!is_valid_ether_addr(addr->sa_data))
3582                 return -EADDRNOTAVAIL;
3583
3584         memcpy(ndev->dev_addr, addr->sa_data, ndev->addr_len);
3585
3586         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
3587         /* Program lower 32 bits of the MAC address */
3588         ql_write_page0_reg(qdev, &port_regs->macAddrIndirectPtrReg,
3589                            (MAC_ADDR_INDIRECT_PTR_REG_RP_MASK << 16));
3590         ql_write_page0_reg(qdev, &port_regs->macAddrDataReg,
3591                            ((ndev->dev_addr[2] << 24) | (ndev->
3592                                                          dev_addr[3] << 16) |
3593                             (ndev->dev_addr[4] << 8) | ndev->dev_addr[5]));
3594
3595         /* Program top 16 bits of the MAC address */
3596         ql_write_page0_reg(qdev, &port_regs->macAddrIndirectPtrReg,
3597                            ((MAC_ADDR_INDIRECT_PTR_REG_RP_MASK << 16) | 1));
3598         ql_write_page0_reg(qdev, &port_regs->macAddrDataReg,
3599                            ((ndev->dev_addr[0] << 8) | ndev->dev_addr[1]));
3600         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
3601
3602         return 0;
3603 }
3604
3605 static void ql3xxx_tx_timeout(struct net_device *ndev, unsigned int txqueue)
3606 {
3607         struct ql3_adapter *qdev = netdev_priv(ndev);
3608
3609         netdev_err(ndev, "Resetting...\n");
3610         /*
3611          * Stop the queues, we've got a problem.
3612          */
3613         netif_stop_queue(ndev);
3614
3615         /*
3616          * Wake up the worker to process this event.
3617          */
3618         queue_delayed_work(qdev->workqueue, &qdev->tx_timeout_work, 0);
3619 }
3620
3621 static void ql_reset_work(struct work_struct *work)
3622 {
3623         struct ql3_adapter *qdev =
3624                 container_of(work, struct ql3_adapter, reset_work.work);
3625         struct net_device *ndev = qdev->ndev;
3626         u32 value;
3627         struct ql_tx_buf_cb *tx_cb;
3628         int max_wait_time, i;
3629         struct ql3xxx_port_registers __iomem *port_regs =
3630                 qdev->mem_map_registers;
3631         unsigned long hw_flags;
3632
3633         if (test_bit((QL_RESET_PER_SCSI | QL_RESET_START), &qdev->flags)) {
3634                 clear_bit(QL_LINK_MASTER, &qdev->flags);
3635
3636                 /*
3637                  * Loop through the active list and return the skb.
3638                  */
3639                 for (i = 0; i < NUM_REQ_Q_ENTRIES; i++) {
3640                         int j;
3641                         tx_cb = &qdev->tx_buf[i];
3642                         if (tx_cb->skb) {
3643                                 netdev_printk(KERN_DEBUG, ndev,
3644                                               "Freeing lost SKB\n");
3645                                 pci_unmap_single(qdev->pdev,
3646                                          dma_unmap_addr(&tx_cb->map[0],
3647                                                         mapaddr),
3648                                          dma_unmap_len(&tx_cb->map[0], maplen),
3649                                          PCI_DMA_TODEVICE);
3650                                 for (j = 1; j < tx_cb->seg_count; j++) {
3651                                         pci_unmap_page(qdev->pdev,
3652                                                dma_unmap_addr(&tx_cb->map[j],
3653                                                               mapaddr),
3654                                                dma_unmap_len(&tx_cb->map[j],
3655                                                              maplen),
3656                                                PCI_DMA_TODEVICE);
3657                                 }
3658                                 dev_kfree_skb(tx_cb->skb);
3659                                 tx_cb->skb = NULL;
3660                         }
3661                 }
3662
3663                 netdev_err(ndev, "Clearing NRI after reset\n");
3664                 spin_lock_irqsave(&qdev->hw_lock, hw_flags);
3665                 ql_write_common_reg(qdev,
3666                                     &port_regs->CommonRegs.
3667                                     ispControlStatus,
3668                                     ((ISP_CONTROL_RI << 16) | ISP_CONTROL_RI));
3669                 /*
3670                  * Wait the for Soft Reset to Complete.
3671                  */
3672                 max_wait_time = 10;
3673                 do {
3674                         value = ql_read_common_reg(qdev,
3675                                                    &port_regs->CommonRegs.
3676
3677                                                    ispControlStatus);
3678                         if ((value & ISP_CONTROL_SR) == 0) {
3679                                 netdev_printk(KERN_DEBUG, ndev,
3680                                               "reset completed\n");
3681                                 break;
3682                         }
3683
3684                         if (value & ISP_CONTROL_RI) {
3685                                 netdev_printk(KERN_DEBUG, ndev,
3686                                               "clearing NRI after reset\n");
3687                                 ql_write_common_reg(qdev,
3688                                                     &port_regs->
3689                                                     CommonRegs.
3690                                                     ispControlStatus,
3691                                                     ((ISP_CONTROL_RI <<
3692                                                       16) | ISP_CONTROL_RI));
3693                         }
3694
3695                         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
3696                         ssleep(1);
3697                         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
3698                 } while (--max_wait_time);
3699                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
3700
3701                 if (value & ISP_CONTROL_SR) {
3702
3703                         /*
3704                          * Set the reset flags and clear the board again.
3705                          * Nothing else to do...
3706                          */
3707                         netdev_err(ndev,
3708                                    "Timed out waiting for reset to complete\n");
3709                         netdev_err(ndev, "Do a reset\n");
3710                         clear_bit(QL_RESET_PER_SCSI, &qdev->flags);
3711                         clear_bit(QL_RESET_START, &qdev->flags);
3712                         ql_cycle_adapter(qdev, QL_DO_RESET);
3713                         return;
3714                 }
3715
3716                 clear_bit(QL_RESET_ACTIVE, &qdev->flags);
3717                 clear_bit(QL_RESET_PER_SCSI, &qdev->flags);
3718                 clear_bit(QL_RESET_START, &qdev->flags);
3719                 ql_cycle_adapter(qdev, QL_NO_RESET);
3720         }
3721 }
3722
3723 static void ql_tx_timeout_work(struct work_struct *work)
3724 {
3725         struct ql3_adapter *qdev =
3726                 container_of(work, struct ql3_adapter, tx_timeout_work.work);
3727
3728         ql_cycle_adapter(qdev, QL_DO_RESET);
3729 }
3730
3731 static void ql_get_board_info(struct ql3_adapter *qdev)
3732 {
3733         struct ql3xxx_port_registers __iomem *port_regs =
3734                 qdev->mem_map_registers;
3735         u32 value;
3736
3737         value = ql_read_page0_reg_l(qdev, &port_regs->portStatus);
3738
3739         qdev->chip_rev_id = ((value & PORT_STATUS_REV_ID_MASK) >> 12);
3740         if (value & PORT_STATUS_64)
3741                 qdev->pci_width = 64;
3742         else
3743                 qdev->pci_width = 32;
3744         if (value & PORT_STATUS_X)
3745                 qdev->pci_x = 1;
3746         else
3747                 qdev->pci_x = 0;
3748         qdev->pci_slot = (u8) PCI_SLOT(qdev->pdev->devfn);
3749 }
3750
3751 static void ql3xxx_timer(struct timer_list *t)
3752 {
3753         struct ql3_adapter *qdev = from_timer(qdev, t, adapter_timer);
3754         queue_delayed_work(qdev->workqueue, &qdev->link_state_work, 0);
3755 }
3756
3757 static const struct net_device_ops ql3xxx_netdev_ops = {
3758         .ndo_open               = ql3xxx_open,
3759         .ndo_start_xmit         = ql3xxx_send,
3760         .ndo_stop               = ql3xxx_close,
3761         .ndo_validate_addr      = eth_validate_addr,
3762         .ndo_set_mac_address    = ql3xxx_set_mac_address,
3763         .ndo_tx_timeout         = ql3xxx_tx_timeout,
3764 };
3765
3766 static int ql3xxx_probe(struct pci_dev *pdev,
3767                         const struct pci_device_id *pci_entry)
3768 {
3769         struct net_device *ndev = NULL;
3770         struct ql3_adapter *qdev = NULL;
3771         static int cards_found;
3772         int pci_using_dac, err;
3773
3774         err = pci_enable_device(pdev);
3775         if (err) {
3776                 pr_err("%s cannot enable PCI device\n", pci_name(pdev));
3777                 goto err_out;
3778         }
3779
3780         err = pci_request_regions(pdev, DRV_NAME);
3781         if (err) {
3782                 pr_err("%s cannot obtain PCI resources\n", pci_name(pdev));
3783                 goto err_out_disable_pdev;
3784         }
3785
3786         pci_set_master(pdev);
3787
3788         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
3789                 pci_using_dac = 1;
3790                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
3791         } else if (!(err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) {
3792                 pci_using_dac = 0;
3793                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3794         }
3795
3796         if (err) {
3797                 pr_err("%s no usable DMA configuration\n", pci_name(pdev));
3798                 goto err_out_free_regions;
3799         }
3800
3801         ndev = alloc_etherdev(sizeof(struct ql3_adapter));
3802         if (!ndev) {
3803                 err = -ENOMEM;
3804                 goto err_out_free_regions;
3805         }
3806
3807         SET_NETDEV_DEV(ndev, &pdev->dev);
3808
3809         pci_set_drvdata(pdev, ndev);
3810
3811         qdev = netdev_priv(ndev);
3812         qdev->index = cards_found;
3813         qdev->ndev = ndev;
3814         qdev->pdev = pdev;
3815         qdev->device_id = pci_entry->device;
3816         qdev->port_link_state = LS_DOWN;
3817         if (msi)
3818                 qdev->msi = 1;
3819
3820         qdev->msg_enable = netif_msg_init(debug, default_msg);
3821
3822         if (pci_using_dac)
3823                 ndev->features |= NETIF_F_HIGHDMA;
3824         if (qdev->device_id == QL3032_DEVICE_ID)
3825                 ndev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
3826
3827         qdev->mem_map_registers = pci_ioremap_bar(pdev, 1);
3828         if (!qdev->mem_map_registers) {
3829                 pr_err("%s: cannot map device registers\n", pci_name(pdev));
3830                 err = -EIO;
3831                 goto err_out_free_ndev;
3832         }
3833
3834         spin_lock_init(&qdev->adapter_lock);
3835         spin_lock_init(&qdev->hw_lock);
3836
3837         /* Set driver entry points */
3838         ndev->netdev_ops = &ql3xxx_netdev_ops;
3839         ndev->ethtool_ops = &ql3xxx_ethtool_ops;
3840         ndev->watchdog_timeo = 5 * HZ;
3841
3842         netif_napi_add(ndev, &qdev->napi, ql_poll, 64);
3843
3844         ndev->irq = pdev->irq;
3845
3846         /* make sure the EEPROM is good */
3847         if (ql_get_nvram_params(qdev)) {
3848                 pr_alert("%s: Adapter #%d, Invalid NVRAM parameters\n",
3849                          __func__, qdev->index);
3850                 err = -EIO;
3851                 goto err_out_iounmap;
3852         }
3853
3854         ql_set_mac_info(qdev);
3855
3856         /* Validate and set parameters */
3857         if (qdev->mac_index) {
3858                 ndev->mtu = qdev->nvram_data.macCfg_port1.etherMtu_mac ;
3859                 ql_set_mac_addr(ndev, qdev->nvram_data.funcCfg_fn2.macAddress);
3860         } else {
3861                 ndev->mtu = qdev->nvram_data.macCfg_port0.etherMtu_mac ;
3862                 ql_set_mac_addr(ndev, qdev->nvram_data.funcCfg_fn0.macAddress);
3863         }
3864
3865         ndev->tx_queue_len = NUM_REQ_Q_ENTRIES;
3866
3867         /* Record PCI bus information. */
3868         ql_get_board_info(qdev);
3869
3870         /*
3871          * Set the Maximum Memory Read Byte Count value. We do this to handle
3872          * jumbo frames.
3873          */
3874         if (qdev->pci_x)
3875                 pci_write_config_word(pdev, (int)0x4e, (u16) 0x0036);
3876
3877         err = register_netdev(ndev);
3878         if (err) {
3879                 pr_err("%s: cannot register net device\n", pci_name(pdev));
3880                 goto err_out_iounmap;
3881         }
3882
3883         /* we're going to reset, so assume we have no link for now */
3884
3885         netif_carrier_off(ndev);
3886         netif_stop_queue(ndev);
3887
3888         qdev->workqueue = create_singlethread_workqueue(ndev->name);
3889         if (!qdev->workqueue) {
3890                 unregister_netdev(ndev);
3891                 err = -ENOMEM;
3892                 goto err_out_iounmap;
3893         }
3894
3895         INIT_DELAYED_WORK(&qdev->reset_work, ql_reset_work);
3896         INIT_DELAYED_WORK(&qdev->tx_timeout_work, ql_tx_timeout_work);
3897         INIT_DELAYED_WORK(&qdev->link_state_work, ql_link_state_machine_work);
3898
3899         timer_setup(&qdev->adapter_timer, ql3xxx_timer, 0);
3900         qdev->adapter_timer.expires = jiffies + HZ * 2; /* two second delay */
3901
3902         if (!cards_found) {
3903                 pr_alert("%s\n", DRV_STRING);
3904                 pr_alert("Driver name: %s, Version: %s\n",
3905                          DRV_NAME, DRV_VERSION);
3906         }
3907         ql_display_dev_info(ndev);
3908
3909         cards_found++;
3910         return 0;
3911
3912 err_out_iounmap:
3913         iounmap(qdev->mem_map_registers);
3914 err_out_free_ndev:
3915         free_netdev(ndev);
3916 err_out_free_regions:
3917         pci_release_regions(pdev);
3918 err_out_disable_pdev:
3919         pci_disable_device(pdev);
3920 err_out:
3921         return err;
3922 }
3923
3924 static void ql3xxx_remove(struct pci_dev *pdev)
3925 {
3926         struct net_device *ndev = pci_get_drvdata(pdev);
3927         struct ql3_adapter *qdev = netdev_priv(ndev);
3928
3929         unregister_netdev(ndev);
3930
3931         ql_disable_interrupts(qdev);
3932
3933         if (qdev->workqueue) {
3934                 cancel_delayed_work(&qdev->reset_work);
3935                 cancel_delayed_work(&qdev->tx_timeout_work);
3936                 destroy_workqueue(qdev->workqueue);
3937                 qdev->workqueue = NULL;
3938         }
3939
3940         iounmap(qdev->mem_map_registers);
3941         pci_release_regions(pdev);
3942         free_netdev(ndev);
3943 }
3944
3945 static struct pci_driver ql3xxx_driver = {
3946
3947         .name = DRV_NAME,
3948         .id_table = ql3xxx_pci_tbl,
3949         .probe = ql3xxx_probe,
3950         .remove = ql3xxx_remove,
3951 };
3952
3953 module_pci_driver(ql3xxx_driver);