drivers/net/ethernet/qlogic/qla3xxx.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * QLogic QLA3xxx NIC HBA Driver
   4  * Copyright (c)  2003-2006 QLogic Corporation
   5  */
   6
   7 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
   8
   9 #include <linux/kernel.h>
  10 #include <linux/types.h>
  11 #include <linux/module.h>
  12 #include <linux/list.h>
  13 #include <linux/pci.h>
  14 #include <linux/dma-mapping.h>
  15 #include <linux/sched.h>
  16 #include <linux/slab.h>
  17 #include <linux/dmapool.h>
  18 #include <linux/mempool.h>
  19 #include <linux/spinlock.h>
  20 #include <linux/kthread.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/errno.h>
  23 #include <linux/ioport.h>
  24 #include <linux/ip.h>
  25 #include <linux/in.h>
  26 #include <linux/if_arp.h>
  27 #include <linux/if_ether.h>
  28 #include <linux/netdevice.h>
  29 #include <linux/etherdevice.h>
  30 #include <linux/ethtool.h>
  31 #include <linux/skbuff.h>
  32 #include <linux/rtnetlink.h>
  33 #include <linux/if_vlan.h>
  34 #include <linux/delay.h>
  35 #include <linux/mm.h>
  36 #include <linux/prefetch.h>
  37
  38 #include "qla3xxx.h"
  39
  40 #define DRV_NAME        "qla3xxx"
  41 #define DRV_STRING      "QLogic ISP3XXX Network Driver"
  42 #define DRV_VERSION     "v2.03.00-k5"
  43
  44 static const char ql3xxx_driver_name[] = DRV_NAME;
  45 static const char ql3xxx_driver_version[] = DRV_VERSION;
  46
  47 #define TIMED_OUT_MSG                                                   \
  48 "Timed out waiting for management port to get free before issuing command\n"
  49
  50 MODULE_AUTHOR("QLogic Corporation");
  51 MODULE_DESCRIPTION("QLogic ISP3XXX Network Driver " DRV_VERSION " ");
  52 MODULE_LICENSE("GPL");
  53 MODULE_VERSION(DRV_VERSION);
  54
  55 static const u32 default_msg
  56     = NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
  57     | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
  58
  59 static int debug = -1;          /* defaults above */
  60 module_param(debug, int, 0);
  61 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  62
  63 static int msi;
  64 module_param(msi, int, 0);
  65 MODULE_PARM_DESC(msi, "Turn on Message Signaled Interrupts.");
  66
  67 static const struct pci_device_id ql3xxx_pci_tbl[] = {
  68         {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, QL3022_DEVICE_ID)},
  69         {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, QL3032_DEVICE_ID)},
  70         /* required last entry */
  71         {0,}
  72 };
  73
  74 MODULE_DEVICE_TABLE(pci, ql3xxx_pci_tbl);
  75
  76 /*
  77  *  These are the known PHY's which are used
  78  */
  79 enum PHY_DEVICE_TYPE {
  80    PHY_TYPE_UNKNOWN   = 0,
  81    PHY_VITESSE_VSC8211,
  82    PHY_AGERE_ET1011C,
  83    MAX_PHY_DEV_TYPES
  84 };
  85
  86 struct PHY_DEVICE_INFO {
  87         const enum PHY_DEVICE_TYPE      phyDevice;
  88         const u32               phyIdOUI;
  89         const u16               phyIdModel;
  90         const char              *name;
  91 };
  92
  93 static const struct PHY_DEVICE_INFO PHY_DEVICES[] = {
  94         {PHY_TYPE_UNKNOWN,    0x000000, 0x0, "PHY_TYPE_UNKNOWN"},
  95         {PHY_VITESSE_VSC8211, 0x0003f1, 0xb, "PHY_VITESSE_VSC8211"},
  96         {PHY_AGERE_ET1011C,   0x00a0bc, 0x1, "PHY_AGERE_ET1011C"},
  97 };
  98
  99
 100 /*
 101  * Caller must take hw_lock.
 102  */
 103 static int ql_sem_spinlock(struct ql3_adapter *qdev,
 104                             u32 sem_mask, u32 sem_bits)
 105 {
 106         struct ql3xxx_port_registers __iomem *port_regs =
 107                 qdev->mem_map_registers;
 108         u32 value;
 109         unsigned int seconds = 3;
 110
 111         do {
 112                 writel((sem_mask | sem_bits),
 113                        &port_regs->CommonRegs.semaphoreReg);
 114                 value = readl(&port_regs->CommonRegs.semaphoreReg);
 115                 if ((value & (sem_mask >> 16)) == sem_bits)
 116                         return 0;
 117                 mdelay(1000);
 118         } while (--seconds);
 119         return -1;
 120 }
 121
 122 static void ql_sem_unlock(struct ql3_adapter *qdev, u32 sem_mask)
 123 {
 124         struct ql3xxx_port_registers __iomem *port_regs =
 125                 qdev->mem_map_registers;
 126         writel(sem_mask, &port_regs->CommonRegs.semaphoreReg);
 127         readl(&port_regs->CommonRegs.semaphoreReg);
 128 }
 129
 130 static int ql_sem_lock(struct ql3_adapter *qdev, u32 sem_mask, u32 sem_bits)
 131 {
 132         struct ql3xxx_port_registers __iomem *port_regs =
 133                 qdev->mem_map_registers;
 134         u32 value;
 135
 136         writel((sem_mask | sem_bits), &port_regs->CommonRegs.semaphoreReg);
 137         value = readl(&port_regs->CommonRegs.semaphoreReg);
 138         return ((value & (sem_mask >> 16)) == sem_bits);
 139 }
 140
 141 /*
 142  * Caller holds hw_lock.
 143  */
 144 static int ql_wait_for_drvr_lock(struct ql3_adapter *qdev)
 145 {
 146         int i = 0;
 147
 148         do {
 149                 if (ql_sem_lock(qdev,
 150                                 QL_DRVR_SEM_MASK,
 151                                 (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index)
 152                                  * 2) << 1)) {
 153                         netdev_printk(KERN_DEBUG, qdev->ndev,
 154                                       "driver lock acquired\n");
 155                         return 1;
 156                 }
 157                 mdelay(1000);
 158         } while (++i < 10);
 159
 160         netdev_err(qdev->ndev, "Timed out waiting for driver lock...\n");
 161         return 0;
 162 }
 163
 164 static void ql_set_register_page(struct ql3_adapter *qdev, u32 page)
 165 {
 166         struct ql3xxx_port_registers __iomem *port_regs =
 167                 qdev->mem_map_registers;
 168
 169         writel(((ISP_CONTROL_NP_MASK << 16) | page),
 170                         &port_regs->CommonRegs.ispControlStatus);
 171         readl(&port_regs->CommonRegs.ispControlStatus);
 172         qdev->current_page = page;
 173 }
 174
 175 static u32 ql_read_common_reg_l(struct ql3_adapter *qdev, u32 __iomem *reg)
 176 {
 177         u32 value;
 178         unsigned long hw_flags;
 179
 180         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
 181         value = readl(reg);
 182         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
 183
 184         return value;
 185 }
 186
 187 static u32 ql_read_common_reg(struct ql3_adapter *qdev, u32 __iomem *reg)
 188 {
 189         return readl(reg);
 190 }
 191
 192 static u32 ql_read_page0_reg_l(struct ql3_adapter *qdev, u32 __iomem *reg)
 193 {
 194         u32 value;
 195         unsigned long hw_flags;
 196
 197         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
 198
 199         if (qdev->current_page != 0)
 200                 ql_set_register_page(qdev, 0);
 201         value = readl(reg);
 202
 203         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
 204         return value;
 205 }
 206
 207 static u32 ql_read_page0_reg(struct ql3_adapter *qdev, u32 __iomem *reg)
 208 {
 209         if (qdev->current_page != 0)
 210                 ql_set_register_page(qdev, 0);
 211         return readl(reg);
 212 }
 213
 214 static void ql_write_common_reg_l(struct ql3_adapter *qdev,
 215                                 u32 __iomem *reg, u32 value)
 216 {
 217         unsigned long hw_flags;
 218
 219         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
 220         writel(value, reg);
 221         readl(reg);
 222         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
 223 }
 224
 225 static void ql_write_common_reg(struct ql3_adapter *qdev,
 226                                 u32 __iomem *reg, u32 value)
 227 {
 228         writel(value, reg);
 229         readl(reg);
 230 }
 231
 232 static void ql_write_nvram_reg(struct ql3_adapter *qdev,
 233                                 u32 __iomem *reg, u32 value)
 234 {
 235         writel(value, reg);
 236         readl(reg);
 237         udelay(1);
 238 }
 239
 240 static void ql_write_page0_reg(struct ql3_adapter *qdev,
 241                                u32 __iomem *reg, u32 value)
 242 {
 243         if (qdev->current_page != 0)
 244                 ql_set_register_page(qdev, 0);
 245         writel(value, reg);
 246         readl(reg);
 247 }
 248
 249 /*
 250  * Caller holds hw_lock. Only called during init.
 251  */
 252 static void ql_write_page1_reg(struct ql3_adapter *qdev,
 253                                u32 __iomem *reg, u32 value)
 254 {
 255         if (qdev->current_page != 1)
 256                 ql_set_register_page(qdev, 1);
 257         writel(value, reg);
 258         readl(reg);
 259 }
 260
 261 /*
 262  * Caller holds hw_lock. Only called during init.
 263  */
 264 static void ql_write_page2_reg(struct ql3_adapter *qdev,
 265                                u32 __iomem *reg, u32 value)
 266 {
 267         if (qdev->current_page != 2)
 268                 ql_set_register_page(qdev, 2);
 269         writel(value, reg);
 270         readl(reg);
 271 }
 272
 273 static void ql_disable_interrupts(struct ql3_adapter *qdev)
 274 {
 275         struct ql3xxx_port_registers __iomem *port_regs =
 276                 qdev->mem_map_registers;
 277
 278         ql_write_common_reg_l(qdev, &port_regs->CommonRegs.ispInterruptMaskReg,
 279                             (ISP_IMR_ENABLE_INT << 16));
 280
 281 }
 282
 283 static void ql_enable_interrupts(struct ql3_adapter *qdev)
 284 {
 285         struct ql3xxx_port_registers __iomem *port_regs =
 286                 qdev->mem_map_registers;
 287
 288         ql_write_common_reg_l(qdev, &port_regs->CommonRegs.ispInterruptMaskReg,
 289                             ((0xff << 16) | ISP_IMR_ENABLE_INT));
 290
 291 }
 292
 293 static void ql_release_to_lrg_buf_free_list(struct ql3_adapter *qdev,
 294                                             struct ql_rcv_buf_cb *lrg_buf_cb)
 295 {
 296         dma_addr_t map;
 297         int err;
 298         lrg_buf_cb->next = NULL;
 299
 300         if (qdev->lrg_buf_free_tail == NULL) {  /* The list is empty  */
 301                 qdev->lrg_buf_free_head = qdev->lrg_buf_free_tail = lrg_buf_cb;
 302         } else {
 303                 qdev->lrg_buf_free_tail->next = lrg_buf_cb;
 304                 qdev->lrg_buf_free_tail = lrg_buf_cb;
 305         }
 306
 307         if (!lrg_buf_cb->skb) {
 308                 lrg_buf_cb->skb = netdev_alloc_skb(qdev->ndev,
 309                                                    qdev->lrg_buffer_len);
 310                 if (unlikely(!lrg_buf_cb->skb)) {
 311                         qdev->lrg_buf_skb_check++;
 312                 } else {
 313                         /*
 314                          * We save some space to copy the ethhdr from first
 315                          * buffer
 316                          */
 317                         skb_reserve(lrg_buf_cb->skb, QL_HEADER_SPACE);
 318                         map = dma_map_single(&qdev->pdev->dev,
 319                                              lrg_buf_cb->skb->data,
 320                                              qdev->lrg_buffer_len - QL_HEADER_SPACE,
 321                                              DMA_FROM_DEVICE);
 322                         err = dma_mapping_error(&qdev->pdev->dev, map);
 323                         if (err) {
 324                                 netdev_err(qdev->ndev,
 325                                            "PCI mapping failed with error: %d\n",
 326                                            err);
 327                                 dev_kfree_skb(lrg_buf_cb->skb);
 328                                 lrg_buf_cb->skb = NULL;
 329
 330                                 qdev->lrg_buf_skb_check++;
 331                                 return;
 332                         }
 333
 334                         lrg_buf_cb->buf_phy_addr_low =
 335                             cpu_to_le32(LS_64BITS(map));
 336                         lrg_buf_cb->buf_phy_addr_high =
 337                             cpu_to_le32(MS_64BITS(map));
 338                         dma_unmap_addr_set(lrg_buf_cb, mapaddr, map);
 339                         dma_unmap_len_set(lrg_buf_cb, maplen,
 340                                           qdev->lrg_buffer_len -
 341                                           QL_HEADER_SPACE);
 342                 }
 343         }
 344
 345         qdev->lrg_buf_free_count++;
 346 }
 347
 348 static struct ql_rcv_buf_cb *ql_get_from_lrg_buf_free_list(struct ql3_adapter
 349                                                            *qdev)
 350 {
 351         struct ql_rcv_buf_cb *lrg_buf_cb = qdev->lrg_buf_free_head;
 352
 353         if (lrg_buf_cb != NULL) {
 354                 qdev->lrg_buf_free_head = lrg_buf_cb->next;
 355                 if (qdev->lrg_buf_free_head == NULL)
 356                         qdev->lrg_buf_free_tail = NULL;
 357                 qdev->lrg_buf_free_count--;
 358         }
 359
 360         return lrg_buf_cb;
 361 }
 362
 363 static u32 addrBits = EEPROM_NO_ADDR_BITS;
 364 static u32 dataBits = EEPROM_NO_DATA_BITS;
 365
 366 static void fm93c56a_deselect(struct ql3_adapter *qdev);
 367 static void eeprom_readword(struct ql3_adapter *qdev, u32 eepromAddr,
 368                             unsigned short *value);
 369
 370 /*
 371  * Caller holds hw_lock.
 372  */
 373 static void fm93c56a_select(struct ql3_adapter *qdev)
 374 {
 375         struct ql3xxx_port_registers __iomem *port_regs =
 376                         qdev->mem_map_registers;
 377         __iomem u32 *spir = &port_regs->CommonRegs.serialPortInterfaceReg;
 378
 379         qdev->eeprom_cmd_data = AUBURN_EEPROM_CS_1;
 380         ql_write_nvram_reg(qdev, spir, ISP_NVRAM_MASK | qdev->eeprom_cmd_data);
 381 }
 382
 383 /*
 384  * Caller holds hw_lock.
 385  */
 386 static void fm93c56a_cmd(struct ql3_adapter *qdev, u32 cmd, u32 eepromAddr)
 387 {
 388         int i;
 389         u32 mask;
 390         u32 dataBit;
 391         u32 previousBit;
 392         struct ql3xxx_port_registers __iomem *port_regs =
 393                         qdev->mem_map_registers;
 394         __iomem u32 *spir = &port_regs->CommonRegs.serialPortInterfaceReg;
 395
 396         /* Clock in a zero, then do the start bit */
 397         ql_write_nvram_reg(qdev, spir,
 398                            (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
 399                             AUBURN_EEPROM_DO_1));
 400         ql_write_nvram_reg(qdev, spir,
 401                            (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
 402                             AUBURN_EEPROM_DO_1 | AUBURN_EEPROM_CLK_RISE));
 403         ql_write_nvram_reg(qdev, spir,
 404                            (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
 405                             AUBURN_EEPROM_DO_1 | AUBURN_EEPROM_CLK_FALL));
 406
 407         mask = 1 << (FM93C56A_CMD_BITS - 1);
 408         /* Force the previous data bit to be different */
 409         previousBit = 0xffff;
 410         for (i = 0; i < FM93C56A_CMD_BITS; i++) {
 411                 dataBit = (cmd & mask)
 412                         ? AUBURN_EEPROM_DO_1
 413                         : AUBURN_EEPROM_DO_0;
 414                 if (previousBit != dataBit) {
 415                         /* If the bit changed, change the DO state to match */
 416                         ql_write_nvram_reg(qdev, spir,
 417                                            (ISP_NVRAM_MASK |
 418                                             qdev->eeprom_cmd_data | dataBit));
 419                         previousBit = dataBit;
 420                 }
 421                 ql_write_nvram_reg(qdev, spir,
 422                                    (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
 423                                     dataBit | AUBURN_EEPROM_CLK_RISE));
 424                 ql_write_nvram_reg(qdev, spir,
 425                                    (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
 426                                     dataBit | AUBURN_EEPROM_CLK_FALL));
 427                 cmd = cmd << 1;
 428         }
 429
 430         mask = 1 << (addrBits - 1);
 431         /* Force the previous data bit to be different */
 432         previousBit = 0xffff;
 433         for (i = 0; i < addrBits; i++) {
 434                 dataBit = (eepromAddr & mask) ? AUBURN_EEPROM_DO_1
 435                         : AUBURN_EEPROM_DO_0;
 436                 if (previousBit != dataBit) {
 437                         /*
 438                          * If the bit changed, then change the DO state to
 439                          * match
 440                          */
 441                         ql_write_nvram_reg(qdev, spir,
 442                                            (ISP_NVRAM_MASK |
 443                                             qdev->eeprom_cmd_data | dataBit));
 444                         previousBit = dataBit;
 445                 }
 446                 ql_write_nvram_reg(qdev, spir,
 447                                    (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
 448                                     dataBit | AUBURN_EEPROM_CLK_RISE));
 449                 ql_write_nvram_reg(qdev, spir,
 450                                    (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
 451                                     dataBit | AUBURN_EEPROM_CLK_FALL));
 452                 eepromAddr = eepromAddr << 1;
 453         }
 454 }
 455
 456 /*
 457  * Caller holds hw_lock.
 458  */
 459 static void fm93c56a_deselect(struct ql3_adapter *qdev)
 460 {
 461         struct ql3xxx_port_registers __iomem *port_regs =
 462                         qdev->mem_map_registers;
 463         __iomem u32 *spir = &port_regs->CommonRegs.serialPortInterfaceReg;
 464
 465         qdev->eeprom_cmd_data = AUBURN_EEPROM_CS_0;
 466         ql_write_nvram_reg(qdev, spir, ISP_NVRAM_MASK | qdev->eeprom_cmd_data);
 467 }
 468
 469 /*
 470  * Caller holds hw_lock.
 471  */
 472 static void fm93c56a_datain(struct ql3_adapter *qdev, unsigned short *value)
 473 {
 474         int i;
 475         u32 data = 0;
 476         u32 dataBit;
 477         struct ql3xxx_port_registers __iomem *port_regs =
 478                         qdev->mem_map_registers;
 479         __iomem u32 *spir = &port_regs->CommonRegs.serialPortInterfaceReg;
 480
 481         /* Read the data bits */
 482         /* The first bit is a dummy.  Clock right over it. */
 483         for (i = 0; i < dataBits; i++) {
 484                 ql_write_nvram_reg(qdev, spir,
 485                                    ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
 486                                    AUBURN_EEPROM_CLK_RISE);
 487                 ql_write_nvram_reg(qdev, spir,
 488                                    ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
 489                                    AUBURN_EEPROM_CLK_FALL);
 490                 dataBit = (ql_read_common_reg(qdev, spir) &
 491                            AUBURN_EEPROM_DI_1) ? 1 : 0;
 492                 data = (data << 1) | dataBit;
 493         }
 494         *value = (u16)data;
 495 }
 496
 497 /*
 498  * Caller holds hw_lock.
 499  */
 500 static void eeprom_readword(struct ql3_adapter *qdev,
 501                             u32 eepromAddr, unsigned short *value)
 502 {
 503         fm93c56a_select(qdev);
 504         fm93c56a_cmd(qdev, (int)FM93C56A_READ, eepromAddr);
 505         fm93c56a_datain(qdev, value);
 506         fm93c56a_deselect(qdev);
 507 }
 508
 509 static void ql_set_mac_addr(struct net_device *ndev, u16 *addr)
 510 {
 511         __le16 *p = (__le16 *)ndev->dev_addr;
 512         p[0] = cpu_to_le16(addr[0]);
 513         p[1] = cpu_to_le16(addr[1]);
 514         p[2] = cpu_to_le16(addr[2]);
 515 }
 516
 517 static int ql_get_nvram_params(struct ql3_adapter *qdev)
 518 {
 519         u16 *pEEPROMData;
 520         u16 checksum = 0;
 521         u32 index;
 522         unsigned long hw_flags;
 523
 524         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
 525
 526         pEEPROMData = (u16 *)&qdev->nvram_data;
 527         qdev->eeprom_cmd_data = 0;
 528         if (ql_sem_spinlock(qdev, QL_NVRAM_SEM_MASK,
 529                         (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index) *
 530                          2) << 10)) {
 531                 pr_err("%s: Failed ql_sem_spinlock()\n", __func__);
 532                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
 533                 return -1;
 534         }
 535
 536         for (index = 0; index < EEPROM_SIZE; index++) {
 537                 eeprom_readword(qdev, index, pEEPROMData);
 538                 checksum += *pEEPROMData;
 539                 pEEPROMData++;
 540         }
 541         ql_sem_unlock(qdev, QL_NVRAM_SEM_MASK);
 542
 543         if (checksum != 0) {
 544                 netdev_err(qdev->ndev, "checksum should be zero, is %x!!\n",
 545                            checksum);
 546                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
 547                 return -1;
 548         }
 549
 550         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
 551         return checksum;
 552 }
 553
 554 static const u32 PHYAddr[2] = {
 555         PORT0_PHY_ADDRESS, PORT1_PHY_ADDRESS
 556 };
 557
 558 static int ql_wait_for_mii_ready(struct ql3_adapter *qdev)
 559 {
 560         struct ql3xxx_port_registers __iomem *port_regs =
 561                         qdev->mem_map_registers;
 562         u32 temp;
 563         int count = 1000;
 564
 565         while (count) {
 566                 temp = ql_read_page0_reg(qdev, &port_regs->macMIIStatusReg);
 567                 if (!(temp & MAC_MII_STATUS_BSY))
 568                         return 0;
 569                 udelay(10);
 570                 count--;
 571         }
 572         return -1;
 573 }
 574
 575 static void ql_mii_enable_scan_mode(struct ql3_adapter *qdev)
 576 {
 577         struct ql3xxx_port_registers __iomem *port_regs =
 578                         qdev->mem_map_registers;
 579         u32 scanControl;
 580
 581         if (qdev->numPorts > 1) {
 582                 /* Auto scan will cycle through multiple ports */
 583                 scanControl = MAC_MII_CONTROL_AS | MAC_MII_CONTROL_SC;
 584         } else {
 585                 scanControl = MAC_MII_CONTROL_SC;
 586         }
 587
 588         /*
 589          * Scan register 1 of PHY/PETBI,
 590          * Set up to scan both devices
 591          * The autoscan starts from the first register, completes
 592          * the last one before rolling over to the first
 593          */
 594         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
 595                            PHYAddr[0] | MII_SCAN_REGISTER);
 596
 597         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
 598                            (scanControl) |
 599                            ((MAC_MII_CONTROL_SC | MAC_MII_CONTROL_AS) << 16));
 600 }
 601
 602 static u8 ql_mii_disable_scan_mode(struct ql3_adapter *qdev)
 603 {
 604         u8 ret;
 605         struct ql3xxx_port_registers __iomem *port_regs =
 606                                         qdev->mem_map_registers;
 607
 608         /* See if scan mode is enabled before we turn it off */
 609         if (ql_read_page0_reg(qdev, &port_regs->macMIIMgmtControlReg) &
 610             (MAC_MII_CONTROL_AS | MAC_MII_CONTROL_SC)) {
 611                 /* Scan is enabled */
 612                 ret = 1;
 613         } else {
 614                 /* Scan is disabled */
 615                 ret = 0;
 616         }
 617
 618         /*
 619          * When disabling scan mode you must first change the MII register
 620          * address
 621          */
 622         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
 623                            PHYAddr[0] | MII_SCAN_REGISTER);
 624
 625         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
 626                            ((MAC_MII_CONTROL_SC | MAC_MII_CONTROL_AS |
 627                              MAC_MII_CONTROL_RC) << 16));
 628
 629         return ret;
 630 }
 631
 632 static int ql_mii_write_reg_ex(struct ql3_adapter *qdev,
 633                                u16 regAddr, u16 value, u32 phyAddr)
 634 {
 635         struct ql3xxx_port_registers __iomem *port_regs =
 636                         qdev->mem_map_registers;
 637         u8 scanWasEnabled;
 638
 639         scanWasEnabled = ql_mii_disable_scan_mode(qdev);
 640
 641         if (ql_wait_for_mii_ready(qdev)) {
 642                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
 643                 return -1;
 644         }
 645
 646         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
 647                            phyAddr | regAddr);
 648
 649         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtDataReg, value);
 650
 651         /* Wait for write to complete 9/10/04 SJP */
 652         if (ql_wait_for_mii_ready(qdev)) {
 653                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
 654                 return -1;
 655         }
 656
 657         if (scanWasEnabled)
 658                 ql_mii_enable_scan_mode(qdev);
 659
 660         return 0;
 661 }
 662
 663 static int ql_mii_read_reg_ex(struct ql3_adapter *qdev, u16 regAddr,
 664                               u16 *value, u32 phyAddr)
 665 {
 666         struct ql3xxx_port_registers __iomem *port_regs =
 667                         qdev->mem_map_registers;
 668         u8 scanWasEnabled;
 669         u32 temp;
 670
 671         scanWasEnabled = ql_mii_disable_scan_mode(qdev);
 672
 673         if (ql_wait_for_mii_ready(qdev)) {
 674                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
 675                 return -1;
 676         }
 677
 678         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
 679                            phyAddr | regAddr);
 680
 681         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
 682                            (MAC_MII_CONTROL_RC << 16));
 683
 684         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
 685                            (MAC_MII_CONTROL_RC << 16) | MAC_MII_CONTROL_RC);
 686
 687         /* Wait for the read to complete */
 688         if (ql_wait_for_mii_ready(qdev)) {
 689                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
 690                 return -1;
 691         }
 692
 693         temp = ql_read_page0_reg(qdev, &port_regs->macMIIMgmtDataReg);
 694         *value = (u16) temp;
 695
 696         if (scanWasEnabled)
 697                 ql_mii_enable_scan_mode(qdev);
 698
 699         return 0;
 700 }
 701
 702 static int ql_mii_write_reg(struct ql3_adapter *qdev, u16 regAddr, u16 value)
 703 {
 704         struct ql3xxx_port_registers __iomem *port_regs =
 705                         qdev->mem_map_registers;
 706
 707         ql_mii_disable_scan_mode(qdev);
 708
 709         if (ql_wait_for_mii_ready(qdev)) {
 710                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
 711                 return -1;
 712         }
 713
 714         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
 715                            qdev->PHYAddr | regAddr);
 716
 717         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtDataReg, value);
 718
 719         /* Wait for write to complete. */
 720         if (ql_wait_for_mii_ready(qdev)) {
 721                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
 722                 return -1;
 723         }
 724
 725         ql_mii_enable_scan_mode(qdev);
 726
 727         return 0;
 728 }
 729
 730 static int ql_mii_read_reg(struct ql3_adapter *qdev, u16 regAddr, u16 *value)
 731 {
 732         u32 temp;
 733         struct ql3xxx_port_registers __iomem *port_regs =
 734                         qdev->mem_map_registers;
 735
 736         ql_mii_disable_scan_mode(qdev);
 737
 738         if (ql_wait_for_mii_ready(qdev)) {
 739                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
 740                 return -1;
 741         }
 742
 743         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
 744                            qdev->PHYAddr | regAddr);
 745
 746         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
 747                            (MAC_MII_CONTROL_RC << 16));
 748
 749         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
 750                            (MAC_MII_CONTROL_RC << 16) | MAC_MII_CONTROL_RC);
 751
 752         /* Wait for the read to complete */
 753         if (ql_wait_for_mii_ready(qdev)) {
 754                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
 755                 return -1;
 756         }
 757
 758         temp = ql_read_page0_reg(qdev, &port_regs->macMIIMgmtDataReg);
 759         *value = (u16) temp;
 760
 761         ql_mii_enable_scan_mode(qdev);
 762
 763         return 0;
 764 }
 765
 766 static void ql_petbi_reset(struct ql3_adapter *qdev)
 767 {
 768         ql_mii_write_reg(qdev, PETBI_CONTROL_REG, PETBI_CTRL_SOFT_RESET);
 769 }
 770
 771 static void ql_petbi_start_neg(struct ql3_adapter *qdev)
 772 {
 773         u16 reg;
 774
 775         /* Enable Auto-negotiation sense */
 776         ql_mii_read_reg(qdev, PETBI_TBI_CTRL, &reg);
 777         reg |= PETBI_TBI_AUTO_SENSE;
 778         ql_mii_write_reg(qdev, PETBI_TBI_CTRL, reg);
 779
 780         ql_mii_write_reg(qdev, PETBI_NEG_ADVER,
 781                          PETBI_NEG_PAUSE | PETBI_NEG_DUPLEX);
 782
 783         ql_mii_write_reg(qdev, PETBI_CONTROL_REG,
 784                          PETBI_CTRL_AUTO_NEG | PETBI_CTRL_RESTART_NEG |
 785                          PETBI_CTRL_FULL_DUPLEX | PETBI_CTRL_SPEED_1000);
 786
 787 }
 788
 789 static void ql_petbi_reset_ex(struct ql3_adapter *qdev)
 790 {
 791         ql_mii_write_reg_ex(qdev, PETBI_CONTROL_REG, PETBI_CTRL_SOFT_RESET,
 792                             PHYAddr[qdev->mac_index]);
 793 }
 794
 795 static void ql_petbi_start_neg_ex(struct ql3_adapter *qdev)
 796 {
 797         u16 reg;
 798
 799         /* Enable Auto-negotiation sense */
 800         ql_mii_read_reg_ex(qdev, PETBI_TBI_CTRL, &reg,
 801                            PHYAddr[qdev->mac_index]);
 802         reg |= PETBI_TBI_AUTO_SENSE;
 803         ql_mii_write_reg_ex(qdev, PETBI_TBI_CTRL, reg,
 804                             PHYAddr[qdev->mac_index]);
 805
 806         ql_mii_write_reg_ex(qdev, PETBI_NEG_ADVER,
 807                             PETBI_NEG_PAUSE | PETBI_NEG_DUPLEX,
 808                             PHYAddr[qdev->mac_index]);
 809
 810         ql_mii_write_reg_ex(qdev, PETBI_CONTROL_REG,
 811                             PETBI_CTRL_AUTO_NEG | PETBI_CTRL_RESTART_NEG |
 812                             PETBI_CTRL_FULL_DUPLEX | PETBI_CTRL_SPEED_1000,
 813                             PHYAddr[qdev->mac_index]);
 814 }
 815
 816 static void ql_petbi_init(struct ql3_adapter *qdev)
 817 {
 818         ql_petbi_reset(qdev);
 819         ql_petbi_start_neg(qdev);
 820 }
 821
 822 static void ql_petbi_init_ex(struct ql3_adapter *qdev)
 823 {
 824         ql_petbi_reset_ex(qdev);
 825         ql_petbi_start_neg_ex(qdev);
 826 }
 827
 828 static int ql_is_petbi_neg_pause(struct ql3_adapter *qdev)
 829 {
 830         u16 reg;
 831
 832         if (ql_mii_read_reg(qdev, PETBI_NEG_PARTNER, &reg) < 0)
 833                 return 0;
 834
 835         return (reg & PETBI_NEG_PAUSE_MASK) == PETBI_NEG_PAUSE;
 836 }
 837
 838 static void phyAgereSpecificInit(struct ql3_adapter *qdev, u32 miiAddr)
 839 {
 840         netdev_info(qdev->ndev, "enabling Agere specific PHY\n");
 841         /* power down device bit 11 = 1 */
 842         ql_mii_write_reg_ex(qdev, 0x00, 0x1940, miiAddr);
 843         /* enable diagnostic mode bit 2 = 1 */
 844         ql_mii_write_reg_ex(qdev, 0x12, 0x840e, miiAddr);
 845         /* 1000MB amplitude adjust (see Agere errata) */
 846         ql_mii_write_reg_ex(qdev, 0x10, 0x8805, miiAddr);
 847         /* 1000MB amplitude adjust (see Agere errata) */
 848         ql_mii_write_reg_ex(qdev, 0x11, 0xf03e, miiAddr);
 849         /* 100MB amplitude adjust (see Agere errata) */
 850         ql_mii_write_reg_ex(qdev, 0x10, 0x8806, miiAddr);
 851         /* 100MB amplitude adjust (see Agere errata) */
 852         ql_mii_write_reg_ex(qdev, 0x11, 0x003e, miiAddr);
 853         /* 10MB amplitude adjust (see Agere errata) */
 854         ql_mii_write_reg_ex(qdev, 0x10, 0x8807, miiAddr);
 855         /* 10MB amplitude adjust (see Agere errata) */
 856         ql_mii_write_reg_ex(qdev, 0x11, 0x1f00, miiAddr);
 857         /* point to hidden reg 0x2806 */
 858         ql_mii_write_reg_ex(qdev, 0x10, 0x2806, miiAddr);
 859         /* Write new PHYAD w/bit 5 set */
 860         ql_mii_write_reg_ex(qdev, 0x11,
 861                             0x0020 | (PHYAddr[qdev->mac_index] >> 8), miiAddr);
 862         /*
 863          * Disable diagnostic mode bit 2 = 0
 864          * Power up device bit 11 = 0
 865          * Link up (on) and activity (blink)
 866          */
 867         ql_mii_write_reg(qdev, 0x12, 0x840a);
 868         ql_mii_write_reg(qdev, 0x00, 0x1140);
 869         ql_mii_write_reg(qdev, 0x1c, 0xfaf0);
 870 }
 871
 872 static enum PHY_DEVICE_TYPE getPhyType(struct ql3_adapter *qdev,
 873                                        u16 phyIdReg0, u16 phyIdReg1)
 874 {
 875         enum PHY_DEVICE_TYPE result = PHY_TYPE_UNKNOWN;
 876         u32   oui;
 877         u16   model;
 878         int i;
 879
 880         if (phyIdReg0 == 0xffff)
 881                 return result;
 882
 883         if (phyIdReg1 == 0xffff)
 884                 return result;
 885
 886         /* oui is split between two registers */
 887         oui = (phyIdReg0 << 6) | ((phyIdReg1 & PHY_OUI_1_MASK) >> 10);
 888
 889         model = (phyIdReg1 & PHY_MODEL_MASK) >> 4;
 890
 891         /* Scan table for this PHY */
 892         for (i = 0; i < MAX_PHY_DEV_TYPES; i++) {
 893                 if ((oui == PHY_DEVICES[i].phyIdOUI) &&
 894                     (model == PHY_DEVICES[i].phyIdModel)) {
 895                         netdev_info(qdev->ndev, "Phy: %s\n",
 896                                     PHY_DEVICES[i].name);
 897                         result = PHY_DEVICES[i].phyDevice;
 898                         break;
 899                 }
 900         }
 901
 902         return result;
 903 }
 904
 905 static int ql_phy_get_speed(struct ql3_adapter *qdev)
 906 {
 907         u16 reg;
 908
 909         switch (qdev->phyType) {
 910         case PHY_AGERE_ET1011C: {
 911                 if (ql_mii_read_reg(qdev, 0x1A, &reg) < 0)
 912                         return 0;
 913
 914                 reg = (reg >> 8) & 3;
 915                 break;
 916         }
 917         default:
 918                 if (ql_mii_read_reg(qdev, AUX_CONTROL_STATUS, &reg) < 0)
 919                         return 0;
 920
 921                 reg = (((reg & 0x18) >> 3) & 3);
 922         }
 923
 924         switch (reg) {
 925         case 2:
 926                 return SPEED_1000;
 927         case 1:
 928                 return SPEED_100;
 929         case 0:
 930                 return SPEED_10;
 931         default:
 932                 return -1;
 933         }
 934 }
 935
 936 static int ql_is_full_dup(struct ql3_adapter *qdev)
 937 {
 938         u16 reg;
 939
 940         switch (qdev->phyType) {
 941         case PHY_AGERE_ET1011C: {
 942                 if (ql_mii_read_reg(qdev, 0x1A, &reg))
 943                         return 0;
 944
 945                 return ((reg & 0x0080) && (reg & 0x1000)) != 0;
 946         }
 947         case PHY_VITESSE_VSC8211:
 948         default: {
 949                 if (ql_mii_read_reg(qdev, AUX_CONTROL_STATUS, &reg) < 0)
 950                         return 0;
 951                 return (reg & PHY_AUX_DUPLEX_STAT) != 0;
 952         }
 953         }
 954 }
 955
 956 static int ql_is_phy_neg_pause(struct ql3_adapter *qdev)
 957 {
 958         u16 reg;
 959
 960         if (ql_mii_read_reg(qdev, PHY_NEG_PARTNER, &reg) < 0)
 961                 return 0;
 962
 963         return (reg & PHY_NEG_PAUSE) != 0;
 964 }
 965
 966 static int PHY_Setup(struct ql3_adapter *qdev)
 967 {
 968         u16   reg1;
 969         u16   reg2;
 970         bool  agereAddrChangeNeeded = false;
 971         u32 miiAddr = 0;
 972         int err;
 973
 974         /*  Determine the PHY we are using by reading the ID's */
 975         err = ql_mii_read_reg(qdev, PHY_ID_0_REG, &reg1);
 976         if (err != 0) {
 977                 netdev_err(qdev->ndev, "Could not read from reg PHY_ID_0_REG\n");
 978                 return err;
 979         }
 980
 981         err = ql_mii_read_reg(qdev, PHY_ID_1_REG, &reg2);
 982         if (err != 0) {
 983                 netdev_err(qdev->ndev, "Could not read from reg PHY_ID_1_REG\n");
 984                 return err;
 985         }
 986
 987         /*  Check if we have a Agere PHY */
 988         if ((reg1 == 0xffff) || (reg2 == 0xffff)) {
 989
 990                 /* Determine which MII address we should be using
 991                    determined by the index of the card */
 992                 if (qdev->mac_index == 0)
 993                         miiAddr = MII_AGERE_ADDR_1;
 994                 else
 995                         miiAddr = MII_AGERE_ADDR_2;
 996
 997                 err = ql_mii_read_reg_ex(qdev, PHY_ID_0_REG, &reg1, miiAddr);
 998                 if (err != 0) {
 999                         netdev_err(qdev->ndev,
1000                                    "Could not read from reg PHY_ID_0_REG after Agere detected\n");
1001                         return err;
1002                 }
1003
1004                 err = ql_mii_read_reg_ex(qdev, PHY_ID_1_REG, &reg2, miiAddr);
1005                 if (err != 0) {
1006                         netdev_err(qdev->ndev, "Could not read from reg PHY_ID_1_REG after Agere detected\n");
1007                         return err;
1008                 }
1009
1010                 /*  We need to remember to initialize the Agere PHY */
1011                 agereAddrChangeNeeded = true;
1012         }
1013
1014         /*  Determine the particular PHY we have on board to apply
1015             PHY specific initializations */
1016         qdev->phyType = getPhyType(qdev, reg1, reg2);
1017
1018         if ((qdev->phyType == PHY_AGERE_ET1011C) && agereAddrChangeNeeded) {
1019                 /* need this here so address gets changed */
1020                 phyAgereSpecificInit(qdev, miiAddr);
1021         } else if (qdev->phyType == PHY_TYPE_UNKNOWN) {
1022                 netdev_err(qdev->ndev, "PHY is unknown\n");
1023                 return -EIO;
1024         }
1025
1026         return 0;
1027 }
1028
1029 /*
1030  * Caller holds hw_lock.
1031  */
1032 static void ql_mac_enable(struct ql3_adapter *qdev, u32 enable)
1033 {
1034         struct ql3xxx_port_registers __iomem *port_regs =
1035                         qdev->mem_map_registers;
1036         u32 value;
1037
1038         if (enable)
1039                 value = (MAC_CONFIG_REG_PE | (MAC_CONFIG_REG_PE << 16));
1040         else
1041                 value = (MAC_CONFIG_REG_PE << 16);
1042
1043         if (qdev->mac_index)
1044                 ql_write_page0_reg(qdev, &port_regs->mac1ConfigReg, value);
1045         else
1046                 ql_write_page0_reg(qdev, &port_regs->mac0ConfigReg, value);
1047 }
1048
1049 /*
1050  * Caller holds hw_lock.
1051  */
1052 static void ql_mac_cfg_soft_reset(struct ql3_adapter *qdev, u32 enable)
1053 {
1054         struct ql3xxx_port_registers __iomem *port_regs =
1055                         qdev->mem_map_registers;
1056         u32 value;
1057
1058         if (enable)
1059                 value = (MAC_CONFIG_REG_SR | (MAC_CONFIG_REG_SR << 16));
1060         else
1061                 value = (MAC_CONFIG_REG_SR << 16);
1062
1063         if (qdev->mac_index)
1064                 ql_write_page0_reg(qdev, &port_regs->mac1ConfigReg, value);
1065         else
1066                 ql_write_page0_reg(qdev, &port_regs->mac0ConfigReg, value);
1067 }
1068
1069 /*
1070  * Caller holds hw_lock.
1071  */
1072 static void ql_mac_cfg_gig(struct ql3_adapter *qdev, u32 enable)
1073 {
1074         struct ql3xxx_port_registers __iomem *port_regs =
1075                         qdev->mem_map_registers;
1076         u32 value;
1077
1078         if (enable)
1079                 value = (MAC_CONFIG_REG_GM | (MAC_CONFIG_REG_GM << 16));
1080         else
1081                 value = (MAC_CONFIG_REG_GM << 16);
1082
1083         if (qdev->mac_index)
1084                 ql_write_page0_reg(qdev, &port_regs->mac1ConfigReg, value);
1085         else
1086                 ql_write_page0_reg(qdev, &port_regs->mac0ConfigReg, value);
1087 }
1088
1089 /*
1090  * Caller holds hw_lock.
1091  */
1092 static void ql_mac_cfg_full_dup(struct ql3_adapter *qdev, u32 enable)
1093 {
1094         struct ql3xxx_port_registers __iomem *port_regs =
1095                         qdev->mem_map_registers;
1096         u32 value;
1097
1098         if (enable)
1099                 value = (MAC_CONFIG_REG_FD | (MAC_CONFIG_REG_FD << 16));
1100         else
1101                 value = (MAC_CONFIG_REG_FD << 16);
1102
1103         if (qdev->mac_index)
1104                 ql_write_page0_reg(qdev, &port_regs->mac1ConfigReg, value);
1105         else
1106                 ql_write_page0_reg(qdev, &port_regs->mac0ConfigReg, value);
1107 }
1108
1109 /*
1110  * Caller holds hw_lock.
1111  */
1112 static void ql_mac_cfg_pause(struct ql3_adapter *qdev, u32 enable)
1113 {
1114         struct ql3xxx_port_registers __iomem *port_regs =
1115                         qdev->mem_map_registers;
1116         u32 value;
1117
1118         if (enable)
1119                 value =
1120                     ((MAC_CONFIG_REG_TF | MAC_CONFIG_REG_RF) |
1121                      ((MAC_CONFIG_REG_TF | MAC_CONFIG_REG_RF) << 16));
1122         else
1123                 value = ((MAC_CONFIG_REG_TF | MAC_CONFIG_REG_RF) << 16);
1124
1125         if (qdev->mac_index)
1126                 ql_write_page0_reg(qdev, &port_regs->mac1ConfigReg, value);
1127         else
1128                 ql_write_page0_reg(qdev, &port_regs->mac0ConfigReg, value);
1129 }
1130
1131 /*
1132  * Caller holds hw_lock.
1133  */
1134 static int ql_is_fiber(struct ql3_adapter *qdev)
1135 {
1136         struct ql3xxx_port_registers __iomem *port_regs =
1137                         qdev->mem_map_registers;
1138         u32 bitToCheck = 0;
1139         u32 temp;
1140
1141         switch (qdev->mac_index) {
1142         case 0:
1143                 bitToCheck = PORT_STATUS_SM0;
1144                 break;
1145         case 1:
1146                 bitToCheck = PORT_STATUS_SM1;
1147                 break;
1148         }
1149
1150         temp = ql_read_page0_reg(qdev, &port_regs->portStatus);
1151         return (temp & bitToCheck) != 0;
1152 }
1153
1154 static int ql_is_auto_cfg(struct ql3_adapter *qdev)
1155 {
1156         u16 reg;
1157         ql_mii_read_reg(qdev, 0x00, &reg);
1158         return (reg & 0x1000) != 0;
1159 }
1160
1161 /*
1162  * Caller holds hw_lock.
1163  */
1164 static int ql_is_auto_neg_complete(struct ql3_adapter *qdev)
1165 {
1166         struct ql3xxx_port_registers __iomem *port_regs =
1167                         qdev->mem_map_registers;
1168         u32 bitToCheck = 0;
1169         u32 temp;
1170
1171         switch (qdev->mac_index) {
1172         case 0:
1173                 bitToCheck = PORT_STATUS_AC0;
1174                 break;
1175         case 1:
1176                 bitToCheck = PORT_STATUS_AC1;
1177                 break;
1178         }
1179
1180         temp = ql_read_page0_reg(qdev, &port_regs->portStatus);
1181         if (temp & bitToCheck) {
1182                 netif_info(qdev, link, qdev->ndev, "Auto-Negotiate complete\n");
1183                 return 1;
1184         }
1185         netif_info(qdev, link, qdev->ndev, "Auto-Negotiate incomplete\n");
1186         return 0;
1187 }
1188
1189 /*
1190  *  ql_is_neg_pause() returns 1 if pause was negotiated to be on
1191  */
1192 static int ql_is_neg_pause(struct ql3_adapter *qdev)
1193 {
1194         if (ql_is_fiber(qdev))
1195                 return ql_is_petbi_neg_pause(qdev);
1196         else
1197                 return ql_is_phy_neg_pause(qdev);
1198 }
1199
1200 static int ql_auto_neg_error(struct ql3_adapter *qdev)
1201 {
1202         struct ql3xxx_port_registers __iomem *port_regs =
1203                         qdev->mem_map_registers;
1204         u32 bitToCheck = 0;
1205         u32 temp;
1206
1207         switch (qdev->mac_index) {
1208         case 0:
1209                 bitToCheck = PORT_STATUS_AE0;
1210                 break;
1211         case 1:
1212                 bitToCheck = PORT_STATUS_AE1;
1213                 break;
1214         }
1215         temp = ql_read_page0_reg(qdev, &port_regs->portStatus);
1216         return (temp & bitToCheck) != 0;
1217 }
1218
1219 static u32 ql_get_link_speed(struct ql3_adapter *qdev)
1220 {
1221         if (ql_is_fiber(qdev))
1222                 return SPEED_1000;
1223         else
1224                 return ql_phy_get_speed(qdev);
1225 }
1226
1227 static int ql_is_link_full_dup(struct ql3_adapter *qdev)
1228 {
1229         if (ql_is_fiber(qdev))
1230                 return 1;
1231         else
1232                 return ql_is_full_dup(qdev);
1233 }
1234
1235 /*
1236  * Caller holds hw_lock.
1237  */
1238 static int ql_link_down_detect(struct ql3_adapter *qdev)
1239 {
1240         struct ql3xxx_port_registers __iomem *port_regs =
1241                         qdev->mem_map_registers;
1242         u32 bitToCheck = 0;
1243         u32 temp;
1244
1245         switch (qdev->mac_index) {
1246         case 0:
1247                 bitToCheck = ISP_CONTROL_LINK_DN_0;
1248                 break;
1249         case 1:
1250                 bitToCheck = ISP_CONTROL_LINK_DN_1;
1251                 break;
1252         }
1253
1254         temp =
1255             ql_read_common_reg(qdev, &port_regs->CommonRegs.ispControlStatus);
1256         return (temp & bitToCheck) != 0;
1257 }
1258
1259 /*
1260  * Caller holds hw_lock.
1261  */
1262 static int ql_link_down_detect_clear(struct ql3_adapter *qdev)
1263 {
1264         struct ql3xxx_port_registers __iomem *port_regs =
1265                         qdev->mem_map_registers;
1266
1267         switch (qdev->mac_index) {
1268         case 0:
1269                 ql_write_common_reg(qdev,
1270                                     &port_regs->CommonRegs.ispControlStatus,
1271                                     (ISP_CONTROL_LINK_DN_0) |
1272                                     (ISP_CONTROL_LINK_DN_0 << 16));
1273                 break;
1274
1275         case 1:
1276                 ql_write_common_reg(qdev,
1277                                     &port_regs->CommonRegs.ispControlStatus,
1278                                     (ISP_CONTROL_LINK_DN_1) |
1279                                     (ISP_CONTROL_LINK_DN_1 << 16));
1280                 break;
1281
1282         default:
1283                 return 1;
1284         }
1285
1286         return 0;
1287 }
1288
1289 /*
1290  * Caller holds hw_lock.
1291  */
1292 static int ql_this_adapter_controls_port(struct ql3_adapter *qdev)
1293 {
1294         struct ql3xxx_port_registers __iomem *port_regs =
1295                         qdev->mem_map_registers;
1296         u32 bitToCheck = 0;
1297         u32 temp;
1298
1299         switch (qdev->mac_index) {
1300         case 0:
1301                 bitToCheck = PORT_STATUS_F1_ENABLED;
1302                 break;
1303         case 1:
1304                 bitToCheck = PORT_STATUS_F3_ENABLED;
1305                 break;
1306         default:
1307                 break;
1308         }
1309
1310         temp = ql_read_page0_reg(qdev, &port_regs->portStatus);
1311         if (temp & bitToCheck) {
1312                 netif_printk(qdev, link, KERN_DEBUG, qdev->ndev,
1313                              "not link master\n");
1314                 return 0;
1315         }
1316
1317         netif_printk(qdev, link, KERN_DEBUG, qdev->ndev, "link master\n");
1318         return 1;
1319 }
1320
1321 static void ql_phy_reset_ex(struct ql3_adapter *qdev)
1322 {
1323         ql_mii_write_reg_ex(qdev, CONTROL_REG, PHY_CTRL_SOFT_RESET,
1324                             PHYAddr[qdev->mac_index]);
1325 }
1326
1327 static void ql_phy_start_neg_ex(struct ql3_adapter *qdev)
1328 {
1329         u16 reg;
1330         u16 portConfiguration;
1331
1332         if (qdev->phyType == PHY_AGERE_ET1011C)
1333                 ql_mii_write_reg(qdev, 0x13, 0x0000);
1334                                         /* turn off external loopback */
1335
1336         if (qdev->mac_index == 0)
1337                 portConfiguration =
1338                         qdev->nvram_data.macCfg_port0.portConfiguration;
1339         else
1340                 portConfiguration =
1341                         qdev->nvram_data.macCfg_port1.portConfiguration;
1342
1343         /*  Some HBA's in the field are set to 0 and they need to
1344             be reinterpreted with a default value */
1345         if (portConfiguration == 0)
1346                 portConfiguration = PORT_CONFIG_DEFAULT;
1347
1348         /* Set the 1000 advertisements */
1349         ql_mii_read_reg_ex(qdev, PHY_GIG_CONTROL, &reg,
1350                            PHYAddr[qdev->mac_index]);
1351         reg &= ~PHY_GIG_ALL_PARAMS;
1352
1353         if (portConfiguration & PORT_CONFIG_1000MB_SPEED) {
1354                 if (portConfiguration & PORT_CONFIG_FULL_DUPLEX_ENABLED)
1355                         reg |= PHY_GIG_ADV_1000F;
1356                 else
1357                         reg |= PHY_GIG_ADV_1000H;
1358         }
1359
1360         ql_mii_write_reg_ex(qdev, PHY_GIG_CONTROL, reg,
1361                             PHYAddr[qdev->mac_index]);
1362
1363         /* Set the 10/100 & pause negotiation advertisements */
1364         ql_mii_read_reg_ex(qdev, PHY_NEG_ADVER, &reg,
1365                            PHYAddr[qdev->mac_index]);
1366         reg &= ~PHY_NEG_ALL_PARAMS;
1367
1368         if (portConfiguration & PORT_CONFIG_SYM_PAUSE_ENABLED)
1369                 reg |= PHY_NEG_ASY_PAUSE | PHY_NEG_SYM_PAUSE;
1370
1371         if (portConfiguration & PORT_CONFIG_FULL_DUPLEX_ENABLED) {
1372                 if (portConfiguration & PORT_CONFIG_100MB_SPEED)
1373                         reg |= PHY_NEG_ADV_100F;
1374
1375                 if (portConfiguration & PORT_CONFIG_10MB_SPEED)
1376                         reg |= PHY_NEG_ADV_10F;
1377         }
1378
1379         if (portConfiguration & PORT_CONFIG_HALF_DUPLEX_ENABLED) {
1380                 if (portConfiguration & PORT_CONFIG_100MB_SPEED)
1381                         reg |= PHY_NEG_ADV_100H;
1382
1383                 if (portConfiguration & PORT_CONFIG_10MB_SPEED)
1384                         reg |= PHY_NEG_ADV_10H;
1385         }
1386
1387         if (portConfiguration & PORT_CONFIG_1000MB_SPEED)
1388                 reg |= 1;
1389
1390         ql_mii_write_reg_ex(qdev, PHY_NEG_ADVER, reg,
1391                             PHYAddr[qdev->mac_index]);
1392
1393         ql_mii_read_reg_ex(qdev, CONTROL_REG, &reg, PHYAddr[qdev->mac_index]);
1394
1395         ql_mii_write_reg_ex(qdev, CONTROL_REG,
1396                             reg | PHY_CTRL_RESTART_NEG | PHY_CTRL_AUTO_NEG,
1397                             PHYAddr[qdev->mac_index]);
1398 }
1399
1400 static void ql_phy_init_ex(struct ql3_adapter *qdev)
1401 {
1402         ql_phy_reset_ex(qdev);
1403         PHY_Setup(qdev);
1404         ql_phy_start_neg_ex(qdev);
1405 }
1406
1407 /*
1408  * Caller holds hw_lock.
1409  */
1410 static u32 ql_get_link_state(struct ql3_adapter *qdev)
1411 {
1412         struct ql3xxx_port_registers __iomem *port_regs =
1413                         qdev->mem_map_registers;
1414         u32 bitToCheck = 0;
1415         u32 temp, linkState;
1416
1417         switch (qdev->mac_index) {
1418         case 0:
1419                 bitToCheck = PORT_STATUS_UP0;
1420                 break;
1421         case 1:
1422                 bitToCheck = PORT_STATUS_UP1;
1423                 break;
1424         }
1425
1426         temp = ql_read_page0_reg(qdev, &port_regs->portStatus);
1427         if (temp & bitToCheck)
1428                 linkState = LS_UP;
1429         else
1430                 linkState = LS_DOWN;
1431
1432         return linkState;
1433 }
1434
1435 static int ql_port_start(struct ql3_adapter *qdev)
1436 {
1437         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
1438                 (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index) *
1439                          2) << 7)) {
1440                 netdev_err(qdev->ndev, "Could not get hw lock for GIO\n");
1441                 return -1;
1442         }
1443
1444         if (ql_is_fiber(qdev)) {
1445                 ql_petbi_init(qdev);
1446         } else {
1447                 /* Copper port */
1448                 ql_phy_init_ex(qdev);
1449         }
1450
1451         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1452         return 0;
1453 }
1454
1455 static int ql_finish_auto_neg(struct ql3_adapter *qdev)
1456 {
1457
1458         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
1459                 (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index) *
1460                          2) << 7))
1461                 return -1;
1462
1463         if (!ql_auto_neg_error(qdev)) {
1464                 if (test_bit(QL_LINK_MASTER, &qdev->flags)) {
1465                         /* configure the MAC */
1466                         netif_printk(qdev, link, KERN_DEBUG, qdev->ndev,
1467                                      "Configuring link\n");
1468                         ql_mac_cfg_soft_reset(qdev, 1);
1469                         ql_mac_cfg_gig(qdev,
1470                                        (ql_get_link_speed
1471                                         (qdev) ==
1472                                         SPEED_1000));
1473                         ql_mac_cfg_full_dup(qdev,
1474                                             ql_is_link_full_dup
1475                                             (qdev));
1476                         ql_mac_cfg_pause(qdev,
1477                                          ql_is_neg_pause
1478                                          (qdev));
1479                         ql_mac_cfg_soft_reset(qdev, 0);
1480
1481                         /* enable the MAC */
1482                         netif_printk(qdev, link, KERN_DEBUG, qdev->ndev,
1483                                      "Enabling mac\n");
1484                         ql_mac_enable(qdev, 1);
1485                 }
1486
1487                 qdev->port_link_state = LS_UP;
1488                 netif_start_queue(qdev->ndev);
1489                 netif_carrier_on(qdev->ndev);
1490                 netif_info(qdev, link, qdev->ndev,
1491                            "Link is up at %d Mbps, %s duplex\n",
1492                            ql_get_link_speed(qdev),
1493                            ql_is_link_full_dup(qdev) ? "full" : "half");
1494
1495         } else {        /* Remote error detected */
1496
1497                 if (test_bit(QL_LINK_MASTER, &qdev->flags)) {
1498                         netif_printk(qdev, link, KERN_DEBUG, qdev->ndev,
1499                                      "Remote error detected. Calling ql_port_start()\n");
1500                         /*
1501                          * ql_port_start() is shared code and needs
1502                          * to lock the PHY on it's own.
1503                          */
1504                         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1505                         if (ql_port_start(qdev))        /* Restart port */
1506                                 return -1;
1507                         return 0;
1508                 }
1509         }
1510         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1511         return 0;
1512 }
1513
1514 static void ql_link_state_machine_work(struct work_struct *work)
1515 {
1516         struct ql3_adapter *qdev =
1517                 container_of(work, struct ql3_adapter, link_state_work.work);
1518
1519         u32 curr_link_state;
1520         unsigned long hw_flags;
1521
1522         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
1523
1524         curr_link_state = ql_get_link_state(qdev);
1525
1526         if (test_bit(QL_RESET_ACTIVE, &qdev->flags)) {
1527                 netif_info(qdev, link, qdev->ndev,
1528                            "Reset in progress, skip processing link state\n");
1529
1530                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1531
1532                 /* Restart timer on 2 second interval. */
1533                 mod_timer(&qdev->adapter_timer, jiffies + HZ * 1);
1534
1535                 return;
1536         }
1537
1538         switch (qdev->port_link_state) {
1539         default:
1540                 if (test_bit(QL_LINK_MASTER, &qdev->flags))
1541                         ql_port_start(qdev);
1542                 qdev->port_link_state = LS_DOWN;
1543                 fallthrough;
1544
1545         case LS_DOWN:
1546                 if (curr_link_state == LS_UP) {
1547                         netif_info(qdev, link, qdev->ndev, "Link is up\n");
1548                         if (ql_is_auto_neg_complete(qdev))
1549                                 ql_finish_auto_neg(qdev);
1550
1551                         if (qdev->port_link_state == LS_UP)
1552                                 ql_link_down_detect_clear(qdev);
1553
1554                         qdev->port_link_state = LS_UP;
1555                 }
1556                 break;
1557
1558         case LS_UP:
1559                 /*
1560                  * See if the link is currently down or went down and came
1561                  * back up
1562                  */
1563                 if (curr_link_state == LS_DOWN) {
1564                         netif_info(qdev, link, qdev->ndev, "Link is down\n");
1565                         qdev->port_link_state = LS_DOWN;
1566                 }
1567                 if (ql_link_down_detect(qdev))
1568                         qdev->port_link_state = LS_DOWN;
1569                 break;
1570         }
1571         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1572
1573         /* Restart timer on 2 second interval. */
1574         mod_timer(&qdev->adapter_timer, jiffies + HZ * 1);
1575 }
1576
1577 /*
1578  * Caller must take hw_lock and QL_PHY_GIO_SEM.
1579  */
1580 static void ql_get_phy_owner(struct ql3_adapter *qdev)
1581 {
1582         if (ql_this_adapter_controls_port(qdev))
1583                 set_bit(QL_LINK_MASTER, &qdev->flags);
1584         else
1585                 clear_bit(QL_LINK_MASTER, &qdev->flags);
1586 }
1587
1588 /*
1589  * Caller must take hw_lock and QL_PHY_GIO_SEM.
1590  */
1591 static void ql_init_scan_mode(struct ql3_adapter *qdev)
1592 {
1593         ql_mii_enable_scan_mode(qdev);
1594
1595         if (test_bit(QL_LINK_OPTICAL, &qdev->flags)) {
1596                 if (ql_this_adapter_controls_port(qdev))
1597                         ql_petbi_init_ex(qdev);
1598         } else {
1599                 if (ql_this_adapter_controls_port(qdev))
1600                         ql_phy_init_ex(qdev);
1601         }
1602 }
1603
1604 /*
1605  * MII_Setup needs to be called before taking the PHY out of reset
1606  * so that the management interface clock speed can be set properly.
1607  * It would be better if we had a way to disable MDC until after the
1608  * PHY is out of reset, but we don't have that capability.
1609  */
1610 static int ql_mii_setup(struct ql3_adapter *qdev)
1611 {
1612         u32 reg;
1613         struct ql3xxx_port_registers __iomem *port_regs =
1614                         qdev->mem_map_registers;
1615
1616         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
1617                         (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index) *
1618                          2) << 7))
1619                 return -1;
1620
1621         if (qdev->device_id == QL3032_DEVICE_ID)
1622                 ql_write_page0_reg(qdev,
1623                         &port_regs->macMIIMgmtControlReg, 0x0f00000);
1624
1625         /* Divide 125MHz clock by 28 to meet PHY timing requirements */
1626         reg = MAC_MII_CONTROL_CLK_SEL_DIV28;
1627
1628         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
1629                            reg | ((MAC_MII_CONTROL_CLK_SEL_MASK) << 16));
1630
1631         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1632         return 0;
1633 }
1634
1635 #define SUPPORTED_OPTICAL_MODES (SUPPORTED_1000baseT_Full |     \
1636                                  SUPPORTED_FIBRE |              \
1637                                  SUPPORTED_Autoneg)
1638 #define SUPPORTED_TP_MODES      (SUPPORTED_10baseT_Half |       \
1639                                  SUPPORTED_10baseT_Full |       \
1640                                  SUPPORTED_100baseT_Half |      \
1641                                  SUPPORTED_100baseT_Full |      \
1642                                  SUPPORTED_1000baseT_Half |     \
1643                                  SUPPORTED_1000baseT_Full |     \
1644                                  SUPPORTED_Autoneg |            \
1645                                  SUPPORTED_TP)                  \
1646
1647 static u32 ql_supported_modes(struct ql3_adapter *qdev)
1648 {
1649         if (test_bit(QL_LINK_OPTICAL, &qdev->flags))
1650                 return SUPPORTED_OPTICAL_MODES;
1651
1652         return SUPPORTED_TP_MODES;
1653 }
1654
1655 static int ql_get_auto_cfg_status(struct ql3_adapter *qdev)
1656 {
1657         int status;
1658         unsigned long hw_flags;
1659         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
1660         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
1661                             (QL_RESOURCE_BITS_BASE_CODE |
1662                              (qdev->mac_index) * 2) << 7)) {
1663                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1664                 return 0;
1665         }
1666         status = ql_is_auto_cfg(qdev);
1667         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1668         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1669         return status;
1670 }
1671
1672 static u32 ql_get_speed(struct ql3_adapter *qdev)
1673 {
1674         u32 status;
1675         unsigned long hw_flags;
1676         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
1677         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
1678                             (QL_RESOURCE_BITS_BASE_CODE |
1679                              (qdev->mac_index) * 2) << 7)) {
1680                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1681                 return 0;
1682         }
1683         status = ql_get_link_speed(qdev);
1684         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1685         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1686         return status;
1687 }
1688
1689 static int ql_get_full_dup(struct ql3_adapter *qdev)
1690 {
1691         int status;
1692         unsigned long hw_flags;
1693         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
1694         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
1695                             (QL_RESOURCE_BITS_BASE_CODE |
1696                              (qdev->mac_index) * 2) << 7)) {
1697                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1698                 return 0;
1699         }
1700         status = ql_is_link_full_dup(qdev);
1701         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1702         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1703         return status;
1704 }
1705
1706 static int ql_get_link_ksettings(struct net_device *ndev,
1707                                  struct ethtool_link_ksettings *cmd)
1708 {
1709         struct ql3_adapter *qdev = netdev_priv(ndev);
1710         u32 supported, advertising;
1711
1712         supported = ql_supported_modes(qdev);
1713
1714         if (test_bit(QL_LINK_OPTICAL, &qdev->flags)) {
1715                 cmd->base.port = PORT_FIBRE;
1716         } else {
1717                 cmd->base.port = PORT_TP;
1718                 cmd->base.phy_address = qdev->PHYAddr;
1719         }
1720         advertising = ql_supported_modes(qdev);
1721         cmd->base.autoneg = ql_get_auto_cfg_status(qdev);
1722         cmd->base.speed = ql_get_speed(qdev);
1723         cmd->base.duplex = ql_get_full_dup(qdev);
1724
1725         ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
1726                                                 supported);
1727         ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
1728                                                 advertising);
1729
1730         return 0;
1731 }
1732
1733 static void ql_get_drvinfo(struct net_device *ndev,
1734                            struct ethtool_drvinfo *drvinfo)
1735 {
1736         struct ql3_adapter *qdev = netdev_priv(ndev);
1737         strlcpy(drvinfo->driver, ql3xxx_driver_name, sizeof(drvinfo->driver));
1738         strlcpy(drvinfo->version, ql3xxx_driver_version,
1739                 sizeof(drvinfo->version));
1740         strlcpy(drvinfo->bus_info, pci_name(qdev->pdev),
1741                 sizeof(drvinfo->bus_info));
1742 }
1743
1744 static u32 ql_get_msglevel(struct net_device *ndev)
1745 {
1746         struct ql3_adapter *qdev = netdev_priv(ndev);
1747         return qdev->msg_enable;
1748 }
1749
1750 static void ql_set_msglevel(struct net_device *ndev, u32 value)
1751 {
1752         struct ql3_adapter *qdev = netdev_priv(ndev);
1753         qdev->msg_enable = value;
1754 }
1755
1756 static void ql_get_pauseparam(struct net_device *ndev,
1757                               struct ethtool_pauseparam *pause)
1758 {
1759         struct ql3_adapter *qdev = netdev_priv(ndev);
1760         struct ql3xxx_port_registers __iomem *port_regs =
1761                 qdev->mem_map_registers;
1762
1763         u32 reg;
1764         if (qdev->mac_index == 0)
1765                 reg = ql_read_page0_reg(qdev, &port_regs->mac0ConfigReg);
1766         else
1767                 reg = ql_read_page0_reg(qdev, &port_regs->mac1ConfigReg);
1768
1769         pause->autoneg  = ql_get_auto_cfg_status(qdev);
1770         pause->rx_pause = (reg & MAC_CONFIG_REG_RF) >> 2;
1771         pause->tx_pause = (reg & MAC_CONFIG_REG_TF) >> 1;
1772 }
1773
1774 static const struct ethtool_ops ql3xxx_ethtool_ops = {
1775         .get_drvinfo = ql_get_drvinfo,
1776         .get_link = ethtool_op_get_link,
1777         .get_msglevel = ql_get_msglevel,
1778         .set_msglevel = ql_set_msglevel,
1779         .get_pauseparam = ql_get_pauseparam,
1780         .get_link_ksettings = ql_get_link_ksettings,
1781 };
1782
1783 static int ql_populate_free_queue(struct ql3_adapter *qdev)
1784 {
1785         struct ql_rcv_buf_cb *lrg_buf_cb = qdev->lrg_buf_free_head;
1786         dma_addr_t map;
1787         int err;
1788
1789         while (lrg_buf_cb) {
1790                 if (!lrg_buf_cb->skb) {
1791                         lrg_buf_cb->skb =
1792                                 netdev_alloc_skb(qdev->ndev,
1793                                                  qdev->lrg_buffer_len);
1794                         if (unlikely(!lrg_buf_cb->skb)) {
1795                                 netdev_printk(KERN_DEBUG, qdev->ndev,
1796                                               "Failed netdev_alloc_skb()\n");
1797                                 break;
1798                         } else {
1799                                 /*
1800                                  * We save some space to copy the ethhdr from
1801                                  * first buffer
1802                                  */
1803                                 skb_reserve(lrg_buf_cb->skb, QL_HEADER_SPACE);
1804                                 map = dma_map_single(&qdev->pdev->dev,
1805                                                      lrg_buf_cb->skb->data,
1806                                                      qdev->lrg_buffer_len - QL_HEADER_SPACE,
1807                                                      DMA_FROM_DEVICE);
1808
1809                                 err = dma_mapping_error(&qdev->pdev->dev, map);
1810                                 if (err) {
1811                                         netdev_err(qdev->ndev,
1812                                                    "PCI mapping failed with error: %d\n",
1813                                                    err);
1814                                         dev_kfree_skb(lrg_buf_cb->skb);
1815                                         lrg_buf_cb->skb = NULL;
1816                                         break;
1817                                 }
1818
1819
1820                                 lrg_buf_cb->buf_phy_addr_low =
1821                                         cpu_to_le32(LS_64BITS(map));
1822                                 lrg_buf_cb->buf_phy_addr_high =
1823                                         cpu_to_le32(MS_64BITS(map));
1824                                 dma_unmap_addr_set(lrg_buf_cb, mapaddr, map);
1825                                 dma_unmap_len_set(lrg_buf_cb, maplen,
1826                                                   qdev->lrg_buffer_len -
1827                                                   QL_HEADER_SPACE);
1828                                 --qdev->lrg_buf_skb_check;
1829                                 if (!qdev->lrg_buf_skb_check)
1830                                         return 1;
1831                         }
1832                 }
1833                 lrg_buf_cb = lrg_buf_cb->next;
1834         }
1835         return 0;
1836 }
1837
1838 /*
1839  * Caller holds hw_lock.
1840  */
1841 static void ql_update_small_bufq_prod_index(struct ql3_adapter *qdev)
1842 {
1843         struct ql3xxx_port_registers __iomem *port_regs =
1844                 qdev->mem_map_registers;
1845
1846         if (qdev->small_buf_release_cnt >= 16) {
1847                 while (qdev->small_buf_release_cnt >= 16) {
1848                         qdev->small_buf_q_producer_index++;
1849
1850                         if (qdev->small_buf_q_producer_index ==
1851                             NUM_SBUFQ_ENTRIES)
1852                                 qdev->small_buf_q_producer_index = 0;
1853                         qdev->small_buf_release_cnt -= 8;
1854                 }
1855                 wmb();
1856                 writel_relaxed(qdev->small_buf_q_producer_index,
1857                                &port_regs->CommonRegs.rxSmallQProducerIndex);
1858         }
1859 }
1860
1861 /*
1862  * Caller holds hw_lock.
1863  */
1864 static void ql_update_lrg_bufq_prod_index(struct ql3_adapter *qdev)
1865 {
1866         struct bufq_addr_element *lrg_buf_q_ele;
1867         int i;
1868         struct ql_rcv_buf_cb *lrg_buf_cb;
1869         struct ql3xxx_port_registers __iomem *port_regs =
1870                 qdev->mem_map_registers;
1871
1872         if ((qdev->lrg_buf_free_count >= 8) &&
1873             (qdev->lrg_buf_release_cnt >= 16)) {
1874
1875                 if (qdev->lrg_buf_skb_check)
1876                         if (!ql_populate_free_queue(qdev))
1877                                 return;
1878
1879                 lrg_buf_q_ele = qdev->lrg_buf_next_free;
1880
1881                 while ((qdev->lrg_buf_release_cnt >= 16) &&
1882                        (qdev->lrg_buf_free_count >= 8)) {
1883
1884                         for (i = 0; i < 8; i++) {
1885                                 lrg_buf_cb =
1886                                     ql_get_from_lrg_buf_free_list(qdev);
1887                                 lrg_buf_q_ele->addr_high =
1888                                     lrg_buf_cb->buf_phy_addr_high;
1889                                 lrg_buf_q_ele->addr_low =
1890                                     lrg_buf_cb->buf_phy_addr_low;
1891                                 lrg_buf_q_ele++;
1892
1893                                 qdev->lrg_buf_release_cnt--;
1894                         }
1895
1896                         qdev->lrg_buf_q_producer_index++;
1897
1898                         if (qdev->lrg_buf_q_producer_index ==
1899                             qdev->num_lbufq_entries)
1900                                 qdev->lrg_buf_q_producer_index = 0;
1901
1902                         if (qdev->lrg_buf_q_producer_index ==
1903                             (qdev->num_lbufq_entries - 1)) {
1904                                 lrg_buf_q_ele = qdev->lrg_buf_q_virt_addr;
1905                         }
1906                 }
1907                 wmb();
1908                 qdev->lrg_buf_next_free = lrg_buf_q_ele;
1909                 writel(qdev->lrg_buf_q_producer_index,
1910                         &port_regs->CommonRegs.rxLargeQProducerIndex);
1911         }
1912 }
1913
1914 static void ql_process_mac_tx_intr(struct ql3_adapter *qdev,
1915                                    struct ob_mac_iocb_rsp *mac_rsp)
1916 {
1917         struct ql_tx_buf_cb *tx_cb;
1918         int i;
1919
1920         if (mac_rsp->flags & OB_MAC_IOCB_RSP_S) {
1921                 netdev_warn(qdev->ndev,
1922                             "Frame too short but it was padded and sent\n");
1923         }
1924
1925         tx_cb = &qdev->tx_buf[mac_rsp->transaction_id];
1926
1927         /*  Check the transmit response flags for any errors */
1928         if (mac_rsp->flags & OB_MAC_IOCB_RSP_S) {
1929                 netdev_err(qdev->ndev,
1930                            "Frame too short to be legal, frame not sent\n");
1931
1932                 qdev->ndev->stats.tx_errors++;
1933                 goto frame_not_sent;
1934         }
1935
1936         if (tx_cb->seg_count == 0) {
1937                 netdev_err(qdev->ndev, "tx_cb->seg_count == 0: %d\n",
1938                            mac_rsp->transaction_id);
1939
1940                 qdev->ndev->stats.tx_errors++;
1941                 goto invalid_seg_count;
1942         }
1943
1944         dma_unmap_single(&qdev->pdev->dev,
1945                          dma_unmap_addr(&tx_cb->map[0], mapaddr),
1946                          dma_unmap_len(&tx_cb->map[0], maplen), DMA_TO_DEVICE);
1947         tx_cb->seg_count--;
1948         if (tx_cb->seg_count) {
1949                 for (i = 1; i < tx_cb->seg_count; i++) {
1950                         dma_unmap_page(&qdev->pdev->dev,
1951                                        dma_unmap_addr(&tx_cb->map[i], mapaddr),
1952                                        dma_unmap_len(&tx_cb->map[i], maplen),
1953                                        DMA_TO_DEVICE);
1954                 }
1955         }
1956         qdev->ndev->stats.tx_packets++;
1957         qdev->ndev->stats.tx_bytes += tx_cb->skb->len;
1958
1959 frame_not_sent:
1960         dev_kfree_skb_irq(tx_cb->skb);
1961         tx_cb->skb = NULL;
1962
1963 invalid_seg_count:
1964         atomic_inc(&qdev->tx_count);
1965 }
1966
1967 static void ql_get_sbuf(struct ql3_adapter *qdev)
1968 {
1969         if (++qdev->small_buf_index == NUM_SMALL_BUFFERS)
1970                 qdev->small_buf_index = 0;
1971         qdev->small_buf_release_cnt++;
1972 }
1973
1974 static struct ql_rcv_buf_cb *ql_get_lbuf(struct ql3_adapter *qdev)
1975 {
1976         struct ql_rcv_buf_cb *lrg_buf_cb = NULL;
1977         lrg_buf_cb = &qdev->lrg_buf[qdev->lrg_buf_index];
1978         qdev->lrg_buf_release_cnt++;
1979         if (++qdev->lrg_buf_index == qdev->num_large_buffers)
1980                 qdev->lrg_buf_index = 0;
1981         return lrg_buf_cb;
1982 }
1983
1984 /*
1985  * The difference between 3022 and 3032 for inbound completions:
1986  * 3022 uses two buffers per completion.  The first buffer contains
1987  * (some) header info, the second the remainder of the headers plus
1988  * the data.  For this chip we reserve some space at the top of the
1989  * receive buffer so that the header info in buffer one can be
1990  * prepended to the buffer two.  Buffer two is the sent up while
1991  * buffer one is returned to the hardware to be reused.
1992  * 3032 receives all of it's data and headers in one buffer for a
1993  * simpler process.  3032 also supports checksum verification as
1994  * can be seen in ql_process_macip_rx_intr().
1995  */
1996 static void ql_process_mac_rx_intr(struct ql3_adapter *qdev,
1997                                    struct ib_mac_iocb_rsp *ib_mac_rsp_ptr)
1998 {
1999         struct ql_rcv_buf_cb *lrg_buf_cb1 = NULL;
2000         struct ql_rcv_buf_cb *lrg_buf_cb2 = NULL;
2001         struct sk_buff *skb;
2002         u16 length = le16_to_cpu(ib_mac_rsp_ptr->length);
2003
2004         /*
2005          * Get the inbound address list (small buffer).
2006          */
2007         ql_get_sbuf(qdev);
2008
2009         if (qdev->device_id == QL3022_DEVICE_ID)
2010                 lrg_buf_cb1 = ql_get_lbuf(qdev);
2011
2012         /* start of second buffer */
2013         lrg_buf_cb2 = ql_get_lbuf(qdev);
2014         skb = lrg_buf_cb2->skb;
2015
2016         qdev->ndev->stats.rx_packets++;
2017         qdev->ndev->stats.rx_bytes += length;
2018
2019         skb_put(skb, length);
2020         dma_unmap_single(&qdev->pdev->dev,
2021                          dma_unmap_addr(lrg_buf_cb2, mapaddr),
2022                          dma_unmap_len(lrg_buf_cb2, maplen), DMA_FROM_DEVICE);
2023         prefetch(skb->data);
2024         skb_checksum_none_assert(skb);
2025         skb->protocol = eth_type_trans(skb, qdev->ndev);
2026
2027         napi_gro_receive(&qdev->napi, skb);
2028         lrg_buf_cb2->skb = NULL;
2029
2030         if (qdev->device_id == QL3022_DEVICE_ID)
2031                 ql_release_to_lrg_buf_free_list(qdev, lrg_buf_cb1);
2032         ql_release_to_lrg_buf_free_list(qdev, lrg_buf_cb2);
2033 }
2034
2035 static void ql_process_macip_rx_intr(struct ql3_adapter *qdev,
2036                                      struct ib_ip_iocb_rsp *ib_ip_rsp_ptr)
2037 {
2038         struct ql_rcv_buf_cb *lrg_buf_cb1 = NULL;
2039         struct ql_rcv_buf_cb *lrg_buf_cb2 = NULL;
2040         struct sk_buff *skb1 = NULL, *skb2;
2041         struct net_device *ndev = qdev->ndev;
2042         u16 length = le16_to_cpu(ib_ip_rsp_ptr->length);
2043         u16 size = 0;
2044
2045         /*
2046          * Get the inbound address list (small buffer).
2047          */
2048
2049         ql_get_sbuf(qdev);
2050
2051         if (qdev->device_id == QL3022_DEVICE_ID) {
2052                 /* start of first buffer on 3022 */
2053                 lrg_buf_cb1 = ql_get_lbuf(qdev);
2054                 skb1 = lrg_buf_cb1->skb;
2055                 size = ETH_HLEN;
2056                 if (*((u16 *) skb1->data) != 0xFFFF)
2057                         size += VLAN_ETH_HLEN - ETH_HLEN;
2058         }
2059
2060         /* start of second buffer */
2061         lrg_buf_cb2 = ql_get_lbuf(qdev);
2062         skb2 = lrg_buf_cb2->skb;
2063
2064         skb_put(skb2, length);  /* Just the second buffer length here. */
2065         dma_unmap_single(&qdev->pdev->dev,
2066                          dma_unmap_addr(lrg_buf_cb2, mapaddr),
2067                          dma_unmap_len(lrg_buf_cb2, maplen), DMA_FROM_DEVICE);
2068         prefetch(skb2->data);
2069
2070         skb_checksum_none_assert(skb2);
2071         if (qdev->device_id == QL3022_DEVICE_ID) {
2072                 /*
2073                  * Copy the ethhdr from first buffer to second. This
2074                  * is necessary for 3022 IP completions.
2075                  */
2076                 skb_copy_from_linear_data_offset(skb1, VLAN_ID_LEN,
2077                                                  skb_push(skb2, size), size);
2078         } else {
2079                 u16 checksum = le16_to_cpu(ib_ip_rsp_ptr->checksum);
2080                 if (checksum &
2081                         (IB_IP_IOCB_RSP_3032_ICE |
2082                          IB_IP_IOCB_RSP_3032_CE)) {
2083                         netdev_err(ndev,
2084                                    "%s: Bad checksum for this %s packet, checksum = %x\n",
2085                                    __func__,
2086                                    ((checksum & IB_IP_IOCB_RSP_3032_TCP) ?
2087                                     "TCP" : "UDP"), checksum);
2088                 } else if ((checksum & IB_IP_IOCB_RSP_3032_TCP) ||
2089                                 (checksum & IB_IP_IOCB_RSP_3032_UDP &&
2090                                 !(checksum & IB_IP_IOCB_RSP_3032_NUC))) {
2091                         skb2->ip_summed = CHECKSUM_UNNECESSARY;
2092                 }
2093         }
2094         skb2->protocol = eth_type_trans(skb2, qdev->ndev);
2095
2096         napi_gro_receive(&qdev->napi, skb2);
2097         ndev->stats.rx_packets++;
2098         ndev->stats.rx_bytes += length;
2099         lrg_buf_cb2->skb = NULL;
2100
2101         if (qdev->device_id == QL3022_DEVICE_ID)
2102                 ql_release_to_lrg_buf_free_list(qdev, lrg_buf_cb1);
2103         ql_release_to_lrg_buf_free_list(qdev, lrg_buf_cb2);
2104 }
2105
2106 static int ql_tx_rx_clean(struct ql3_adapter *qdev, int budget)
2107 {
2108         struct net_rsp_iocb *net_rsp;
2109         struct net_device *ndev = qdev->ndev;
2110         int work_done = 0;
2111
2112         /* While there are entries in the completion queue. */
2113         while ((le32_to_cpu(*(qdev->prsp_producer_index)) !=
2114                 qdev->rsp_consumer_index) && (work_done < budget)) {
2115
2116                 net_rsp = qdev->rsp_current;
2117                 rmb();
2118                 /*
2119                  * Fix 4032 chip's undocumented "feature" where bit-8 is set
2120                  * if the inbound completion is for a VLAN.
2121                  */
2122                 if (qdev->device_id == QL3032_DEVICE_ID)
2123                         net_rsp->opcode &= 0x7f;
2124                 switch (net_rsp->opcode) {
2125
2126                 case OPCODE_OB_MAC_IOCB_FN0:
2127                 case OPCODE_OB_MAC_IOCB_FN2:
2128                         ql_process_mac_tx_intr(qdev, (struct ob_mac_iocb_rsp *)
2129                                                net_rsp);
2130                         break;
2131
2132                 case OPCODE_IB_MAC_IOCB:
2133                 case OPCODE_IB_3032_MAC_IOCB:
2134                         ql_process_mac_rx_intr(qdev, (struct ib_mac_iocb_rsp *)
2135                                                net_rsp);
2136                         work_done++;
2137                         break;
2138
2139                 case OPCODE_IB_IP_IOCB:
2140                 case OPCODE_IB_3032_IP_IOCB:
2141                         ql_process_macip_rx_intr(qdev, (struct ib_ip_iocb_rsp *)
2142                                                  net_rsp);
2143                         work_done++;
2144                         break;
2145                 default: {
2146                         u32 *tmp = (u32 *)net_rsp;
2147                         netdev_err(ndev,
2148                                    "Hit default case, not handled!\n"
2149                                    "    dropping the packet, opcode = %x\n"
2150                                    "0x%08lx 0x%08lx 0x%08lx 0x%08lx\n",
2151                                    net_rsp->opcode,
2152                                    (unsigned long int)tmp[0],
2153                                    (unsigned long int)tmp[1],
2154                                    (unsigned long int)tmp[2],
2155                                    (unsigned long int)tmp[3]);
2156                 }
2157                 }
2158
2159                 qdev->rsp_consumer_index++;
2160
2161                 if (qdev->rsp_consumer_index == NUM_RSP_Q_ENTRIES) {
2162                         qdev->rsp_consumer_index = 0;
2163                         qdev->rsp_current = qdev->rsp_q_virt_addr;
2164                 } else {
2165                         qdev->rsp_current++;
2166                 }
2167
2168         }
2169
2170         return work_done;
2171 }
2172
2173 static int ql_poll(struct napi_struct *napi, int budget)
2174 {
2175         struct ql3_adapter *qdev = container_of(napi, struct ql3_adapter, napi);
2176         struct ql3xxx_port_registers __iomem *port_regs =
2177                 qdev->mem_map_registers;
2178         int work_done;
2179
2180         work_done = ql_tx_rx_clean(qdev, budget);
2181
2182         if (work_done < budget && napi_complete_done(napi, work_done)) {
2183                 unsigned long flags;
2184
2185                 spin_lock_irqsave(&qdev->hw_lock, flags);
2186                 ql_update_small_bufq_prod_index(qdev);
2187                 ql_update_lrg_bufq_prod_index(qdev);
2188                 writel(qdev->rsp_consumer_index,
2189                             &port_regs->CommonRegs.rspQConsumerIndex);
2190                 spin_unlock_irqrestore(&qdev->hw_lock, flags);
2191
2192                 ql_enable_interrupts(qdev);
2193         }
2194         return work_done;
2195 }
2196
2197 static irqreturn_t ql3xxx_isr(int irq, void *dev_id)
2198 {
2199
2200         struct net_device *ndev = dev_id;
2201         struct ql3_adapter *qdev = netdev_priv(ndev);
2202         struct ql3xxx_port_registers __iomem *port_regs =
2203                 qdev->mem_map_registers;
2204         u32 value;
2205         int handled = 1;
2206         u32 var;
2207
2208         value = ql_read_common_reg_l(qdev,
2209                                      &port_regs->CommonRegs.ispControlStatus);
2210
2211         if (value & (ISP_CONTROL_FE | ISP_CONTROL_RI)) {
2212                 spin_lock(&qdev->adapter_lock);
2213                 netif_stop_queue(qdev->ndev);
2214                 netif_carrier_off(qdev->ndev);
2215                 ql_disable_interrupts(qdev);
2216                 qdev->port_link_state = LS_DOWN;
2217                 set_bit(QL_RESET_ACTIVE, &qdev->flags) ;
2218
2219                 if (value & ISP_CONTROL_FE) {
2220                         /*
2221                          * Chip Fatal Error.
2222                          */
2223                         var =
2224                             ql_read_page0_reg_l(qdev,
2225                                               &port_regs->PortFatalErrStatus);
2226                         netdev_warn(ndev,
2227                                     "Resetting chip. PortFatalErrStatus register = 0x%x\n",
2228                                     var);
2229                         set_bit(QL_RESET_START, &qdev->flags) ;
2230                 } else {
2231                         /*
2232                          * Soft Reset Requested.
2233                          */
2234                         set_bit(QL_RESET_PER_SCSI, &qdev->flags) ;
2235                         netdev_err(ndev,
2236                                    "Another function issued a reset to the chip. ISR value = %x\n",
2237                                    value);
2238                 }
2239                 queue_delayed_work(qdev->workqueue, &qdev->reset_work, 0);
2240                 spin_unlock(&qdev->adapter_lock);
2241         } else if (value & ISP_IMR_DISABLE_CMPL_INT) {
2242                 ql_disable_interrupts(qdev);
2243                 if (likely(napi_schedule_prep(&qdev->napi)))
2244                         __napi_schedule(&qdev->napi);
2245         } else
2246                 return IRQ_NONE;
2247
2248         return IRQ_RETVAL(handled);
2249 }
2250
2251 /*
2252  * Get the total number of segments needed for the given number of fragments.
2253  * This is necessary because outbound address lists (OAL) will be used when
2254  * more than two frags are given.  Each address list has 5 addr/len pairs.
2255  * The 5th pair in each OAL is used to  point to the next OAL if more frags
2256  * are coming.  That is why the frags:segment count ratio is not linear.
2257  */
2258 static int ql_get_seg_count(struct ql3_adapter *qdev, unsigned short frags)
2259 {
2260         if (qdev->device_id == QL3022_DEVICE_ID)
2261                 return 1;
2262
2263         if (frags <= 2)
2264                 return frags + 1;
2265         else if (frags <= 6)
2266                 return frags + 2;
2267         else if (frags <= 10)
2268                 return frags + 3;
2269         else if (frags <= 14)
2270                 return frags + 4;
2271         else if (frags <= 18)
2272                 return frags + 5;
2273         return -1;
2274 }
2275
2276 static void ql_hw_csum_setup(const struct sk_buff *skb,
2277                              struct ob_mac_iocb_req *mac_iocb_ptr)
2278 {
2279         const struct iphdr *ip = ip_hdr(skb);
2280
2281         mac_iocb_ptr->ip_hdr_off = skb_network_offset(skb);
2282         mac_iocb_ptr->ip_hdr_len = ip->ihl;
2283
2284         if (ip->protocol == IPPROTO_TCP) {
2285                 mac_iocb_ptr->flags1 |= OB_3032MAC_IOCB_REQ_TC |
2286                         OB_3032MAC_IOCB_REQ_IC;
2287         } else {
2288                 mac_iocb_ptr->flags1 |= OB_3032MAC_IOCB_REQ_UC |
2289                         OB_3032MAC_IOCB_REQ_IC;
2290         }
2291
2292 }
2293
2294 /*
2295  * Map the buffers for this transmit.
2296  * This will return NETDEV_TX_BUSY or NETDEV_TX_OK based on success.
2297  */
2298 static int ql_send_map(struct ql3_adapter *qdev,
2299                                 struct ob_mac_iocb_req *mac_iocb_ptr,
2300                                 struct ql_tx_buf_cb *tx_cb,
2301                                 struct sk_buff *skb)
2302 {
2303         struct oal *oal;
2304         struct oal_entry *oal_entry;
2305         int len = skb_headlen(skb);
2306         dma_addr_t map;
2307         int err;
2308         int completed_segs, i;
2309         int seg_cnt, seg = 0;
2310         int frag_cnt = (int)skb_shinfo(skb)->nr_frags;
2311
2312         seg_cnt = tx_cb->seg_count;
2313         /*
2314          * Map the skb buffer first.
2315          */
2316         map = dma_map_single(&qdev->pdev->dev, skb->data, len, DMA_TO_DEVICE);
2317
2318         err = dma_mapping_error(&qdev->pdev->dev, map);
2319         if (err) {
2320                 netdev_err(qdev->ndev, "PCI mapping failed with error: %d\n",
2321                            err);
2322
2323                 return NETDEV_TX_BUSY;
2324         }
2325
2326         oal_entry = (struct oal_entry *)&mac_iocb_ptr->buf_addr0_low;
2327         oal_entry->dma_lo = cpu_to_le32(LS_64BITS(map));
2328         oal_entry->dma_hi = cpu_to_le32(MS_64BITS(map));
2329         oal_entry->len = cpu_to_le32(len);
2330         dma_unmap_addr_set(&tx_cb->map[seg], mapaddr, map);
2331         dma_unmap_len_set(&tx_cb->map[seg], maplen, len);
2332         seg++;
2333
2334         if (seg_cnt == 1) {
2335                 /* Terminate the last segment. */
2336                 oal_entry->len |= cpu_to_le32(OAL_LAST_ENTRY);
2337                 return NETDEV_TX_OK;
2338         }
2339         oal = tx_cb->oal;
2340         for (completed_segs = 0;
2341              completed_segs < frag_cnt;
2342              completed_segs++, seg++) {
2343                 skb_frag_t *frag = &skb_shinfo(skb)->frags[completed_segs];
2344                 oal_entry++;
2345                 /*
2346                  * Check for continuation requirements.
2347                  * It's strange but necessary.
2348                  * Continuation entry points to outbound address list.
2349                  */
2350                 if ((seg == 2 && seg_cnt > 3) ||
2351                     (seg == 7 && seg_cnt > 8) ||
2352                     (seg == 12 && seg_cnt > 13) ||
2353                     (seg == 17 && seg_cnt > 18)) {
2354                         map = dma_map_single(&qdev->pdev->dev, oal,
2355                                              sizeof(struct oal),
2356                                              DMA_TO_DEVICE);
2357
2358                         err = dma_mapping_error(&qdev->pdev->dev, map);
2359                         if (err) {
2360                                 netdev_err(qdev->ndev,
2361                                            "PCI mapping outbound address list with error: %d\n",
2362                                            err);
2363                                 goto map_error;
2364                         }
2365
2366                         oal_entry->dma_lo = cpu_to_le32(LS_64BITS(map));
2367                         oal_entry->dma_hi = cpu_to_le32(MS_64BITS(map));
2368                         oal_entry->len = cpu_to_le32(sizeof(struct oal) |
2369                                                      OAL_CONT_ENTRY);
2370                         dma_unmap_addr_set(&tx_cb->map[seg], mapaddr, map);
2371                         dma_unmap_len_set(&tx_cb->map[seg], maplen,
2372                                           sizeof(struct oal));
2373                         oal_entry = (struct oal_entry *)oal;
2374                         oal++;
2375                         seg++;
2376                 }
2377
2378                 map = skb_frag_dma_map(&qdev->pdev->dev, frag, 0, skb_frag_size(frag),
2379                                        DMA_TO_DEVICE);
2380
2381                 err = dma_mapping_error(&qdev->pdev->dev, map);
2382                 if (err) {
2383                         netdev_err(qdev->ndev,
2384                                    "PCI mapping frags failed with error: %d\n",
2385                                    err);
2386                         goto map_error;
2387                 }
2388
2389                 oal_entry->dma_lo = cpu_to_le32(LS_64BITS(map));
2390                 oal_entry->dma_hi = cpu_to_le32(MS_64BITS(map));
2391                 oal_entry->len = cpu_to_le32(skb_frag_size(frag));
2392                 dma_unmap_addr_set(&tx_cb->map[seg], mapaddr, map);
2393                 dma_unmap_len_set(&tx_cb->map[seg], maplen, skb_frag_size(frag));
2394                 }
2395         /* Terminate the last segment. */
2396         oal_entry->len |= cpu_to_le32(OAL_LAST_ENTRY);
2397         return NETDEV_TX_OK;
2398
2399 map_error:
2400         /* A PCI mapping failed and now we will need to back out
2401          * We need to traverse through the oal's and associated pages which
2402          * have been mapped and now we must unmap them to clean up properly
2403          */
2404
2405         seg = 1;
2406         oal_entry = (struct oal_entry *)&mac_iocb_ptr->buf_addr0_low;
2407         oal = tx_cb->oal;
2408         for (i = 0; i < completed_segs; i++, seg++) {
2409                 oal_entry++;
2410
2411                 /*
2412                  * Check for continuation requirements.
2413                  * It's strange but necessary.
2414                  */
2415
2416                 if ((seg == 2 && seg_cnt > 3) ||
2417                     (seg == 7 && seg_cnt > 8) ||
2418                     (seg == 12 && seg_cnt > 13) ||
2419                     (seg == 17 && seg_cnt > 18)) {
2420                         dma_unmap_single(&qdev->pdev->dev,
2421                                          dma_unmap_addr(&tx_cb->map[seg], mapaddr),
2422                                          dma_unmap_len(&tx_cb->map[seg], maplen),
2423                                          DMA_TO_DEVICE);
2424                         oal++;
2425                         seg++;
2426                 }
2427
2428                 dma_unmap_page(&qdev->pdev->dev,
2429                                dma_unmap_addr(&tx_cb->map[seg], mapaddr),
2430                                dma_unmap_len(&tx_cb->map[seg], maplen),
2431                                DMA_TO_DEVICE);
2432         }
2433
2434         dma_unmap_single(&qdev->pdev->dev,
2435                          dma_unmap_addr(&tx_cb->map[0], mapaddr),
2436                          dma_unmap_addr(&tx_cb->map[0], maplen),
2437                          DMA_TO_DEVICE);
2438
2439         return NETDEV_TX_BUSY;
2440
2441 }
2442
2443 /*
2444  * The difference between 3022 and 3032 sends:
2445  * 3022 only supports a simple single segment transmission.
2446  * 3032 supports checksumming and scatter/gather lists (fragments).
2447  * The 3032 supports sglists by using the 3 addr/len pairs (ALP)
2448  * in the IOCB plus a chain of outbound address lists (OAL) that
2449  * each contain 5 ALPs.  The last ALP of the IOCB (3rd) or OAL (5th)
2450  * will be used to point to an OAL when more ALP entries are required.
2451  * The IOCB is always the top of the chain followed by one or more
2452  * OALs (when necessary).
2453  */
2454 static netdev_tx_t ql3xxx_send(struct sk_buff *skb,
2455                                struct net_device *ndev)
2456 {
2457         struct ql3_adapter *qdev = netdev_priv(ndev);
2458         struct ql3xxx_port_registers __iomem *port_regs =
2459                         qdev->mem_map_registers;
2460         struct ql_tx_buf_cb *tx_cb;
2461         u32 tot_len = skb->len;
2462         struct ob_mac_iocb_req *mac_iocb_ptr;
2463
2464         if (unlikely(atomic_read(&qdev->tx_count) < 2))
2465                 return NETDEV_TX_BUSY;
2466
2467         tx_cb = &qdev->tx_buf[qdev->req_producer_index];
2468         tx_cb->seg_count = ql_get_seg_count(qdev,
2469                                              skb_shinfo(skb)->nr_frags);
2470         if (tx_cb->seg_count == -1) {
2471                 netdev_err(ndev, "%s: invalid segment count!\n", __func__);
2472                 return NETDEV_TX_OK;
2473         }
2474
2475         mac_iocb_ptr = tx_cb->queue_entry;
2476         memset((void *)mac_iocb_ptr, 0, sizeof(struct ob_mac_iocb_req));
2477         mac_iocb_ptr->opcode = qdev->mac_ob_opcode;
2478         mac_iocb_ptr->flags = OB_MAC_IOCB_REQ_X;
2479         mac_iocb_ptr->flags |= qdev->mb_bit_mask;
2480         mac_iocb_ptr->transaction_id = qdev->req_producer_index;
2481         mac_iocb_ptr->data_len = cpu_to_le16((u16) tot_len);
2482         tx_cb->skb = skb;
2483         if (qdev->device_id == QL3032_DEVICE_ID &&
2484             skb->ip_summed == CHECKSUM_PARTIAL)
2485                 ql_hw_csum_setup(skb, mac_iocb_ptr);
2486
2487         if (ql_send_map(qdev, mac_iocb_ptr, tx_cb, skb) != NETDEV_TX_OK) {
2488                 netdev_err(ndev, "%s: Could not map the segments!\n", __func__);
2489                 return NETDEV_TX_BUSY;
2490         }
2491
2492         wmb();
2493         qdev->req_producer_index++;
2494         if (qdev->req_producer_index == NUM_REQ_Q_ENTRIES)
2495                 qdev->req_producer_index = 0;
2496         wmb();
2497         ql_write_common_reg_l(qdev,
2498                             &port_regs->CommonRegs.reqQProducerIndex,
2499                             qdev->req_producer_index);
2500
2501         netif_printk(qdev, tx_queued, KERN_DEBUG, ndev,
2502                      "tx queued, slot %d, len %d\n",
2503                      qdev->req_producer_index, skb->len);
2504
2505         atomic_dec(&qdev->tx_count);
2506         return NETDEV_TX_OK;
2507 }
2508
2509 static int ql_alloc_net_req_rsp_queues(struct ql3_adapter *qdev)
2510 {
2511         qdev->req_q_size =
2512             (u32) (NUM_REQ_Q_ENTRIES * sizeof(struct ob_mac_iocb_req));
2513
2514         qdev->rsp_q_size = NUM_RSP_Q_ENTRIES * sizeof(struct net_rsp_iocb);
2515
2516         /* The barrier is required to ensure request and response queue
2517          * addr writes to the registers.
2518          */
2519         wmb();
2520
2521         qdev->req_q_virt_addr =
2522             dma_alloc_coherent(&qdev->pdev->dev, (size_t)qdev->req_q_size,
2523                                &qdev->req_q_phy_addr, GFP_KERNEL);
2524
2525         if ((qdev->req_q_virt_addr == NULL) ||
2526             LS_64BITS(qdev->req_q_phy_addr) & (qdev->req_q_size - 1)) {
2527                 netdev_err(qdev->ndev, "reqQ failed\n");
2528                 return -ENOMEM;
2529         }
2530
2531         qdev->rsp_q_virt_addr =
2532             dma_alloc_coherent(&qdev->pdev->dev, (size_t)qdev->rsp_q_size,
2533                                &qdev->rsp_q_phy_addr, GFP_KERNEL);
2534
2535         if ((qdev->rsp_q_virt_addr == NULL) ||
2536             LS_64BITS(qdev->rsp_q_phy_addr) & (qdev->rsp_q_size - 1)) {
2537                 netdev_err(qdev->ndev, "rspQ allocation failed\n");
2538                 dma_free_coherent(&qdev->pdev->dev, (size_t)qdev->req_q_size,
2539                                   qdev->req_q_virt_addr, qdev->req_q_phy_addr);
2540                 return -ENOMEM;
2541         }
2542
2543         set_bit(QL_ALLOC_REQ_RSP_Q_DONE, &qdev->flags);
2544
2545         return 0;
2546 }
2547
2548 static void ql_free_net_req_rsp_queues(struct ql3_adapter *qdev)
2549 {
2550         if (!test_bit(QL_ALLOC_REQ_RSP_Q_DONE, &qdev->flags)) {
2551                 netdev_info(qdev->ndev, "Already done\n");
2552                 return;
2553         }
2554
2555         dma_free_coherent(&qdev->pdev->dev, qdev->req_q_size,
2556                           qdev->req_q_virt_addr, qdev->req_q_phy_addr);
2557
2558         qdev->req_q_virt_addr = NULL;
2559
2560         dma_free_coherent(&qdev->pdev->dev, qdev->rsp_q_size,
2561                           qdev->rsp_q_virt_addr, qdev->rsp_q_phy_addr);
2562
2563         qdev->rsp_q_virt_addr = NULL;
2564
2565         clear_bit(QL_ALLOC_REQ_RSP_Q_DONE, &qdev->flags);
2566 }
2567
2568 static int ql_alloc_buffer_queues(struct ql3_adapter *qdev)
2569 {
2570         /* Create Large Buffer Queue */
2571         qdev->lrg_buf_q_size =
2572                 qdev->num_lbufq_entries * sizeof(struct lrg_buf_q_entry);
2573         if (qdev->lrg_buf_q_size < PAGE_SIZE)
2574                 qdev->lrg_buf_q_alloc_size = PAGE_SIZE;
2575         else
2576                 qdev->lrg_buf_q_alloc_size = qdev->lrg_buf_q_size * 2;
2577
2578         qdev->lrg_buf = kmalloc_array(qdev->num_large_buffers,
2579                                       sizeof(struct ql_rcv_buf_cb),
2580                                       GFP_KERNEL);
2581         if (qdev->lrg_buf == NULL)
2582                 return -ENOMEM;
2583
2584         qdev->lrg_buf_q_alloc_virt_addr =
2585                 dma_alloc_coherent(&qdev->pdev->dev,
2586                                    qdev->lrg_buf_q_alloc_size,
2587                                    &qdev->lrg_buf_q_alloc_phy_addr, GFP_KERNEL);
2588
2589         if (qdev->lrg_buf_q_alloc_virt_addr == NULL) {
2590                 netdev_err(qdev->ndev, "lBufQ failed\n");
2591                 return -ENOMEM;
2592         }
2593         qdev->lrg_buf_q_virt_addr = qdev->lrg_buf_q_alloc_virt_addr;
2594         qdev->lrg_buf_q_phy_addr = qdev->lrg_buf_q_alloc_phy_addr;
2595
2596         /* Create Small Buffer Queue */
2597         qdev->small_buf_q_size =
2598                 NUM_SBUFQ_ENTRIES * sizeof(struct lrg_buf_q_entry);
2599         if (qdev->small_buf_q_size < PAGE_SIZE)
2600                 qdev->small_buf_q_alloc_size = PAGE_SIZE;
2601         else
2602                 qdev->small_buf_q_alloc_size = qdev->small_buf_q_size * 2;
2603
2604         qdev->small_buf_q_alloc_virt_addr =
2605                 dma_alloc_coherent(&qdev->pdev->dev,
2606                                    qdev->small_buf_q_alloc_size,
2607                                    &qdev->small_buf_q_alloc_phy_addr, GFP_KERNEL);
2608
2609         if (qdev->small_buf_q_alloc_virt_addr == NULL) {
2610                 netdev_err(qdev->ndev, "Small Buffer Queue allocation failed\n");
2611                 dma_free_coherent(&qdev->pdev->dev,
2612                                   qdev->lrg_buf_q_alloc_size,
2613                                   qdev->lrg_buf_q_alloc_virt_addr,
2614                                   qdev->lrg_buf_q_alloc_phy_addr);
2615                 return -ENOMEM;
2616         }
2617
2618         qdev->small_buf_q_virt_addr = qdev->small_buf_q_alloc_virt_addr;
2619         qdev->small_buf_q_phy_addr = qdev->small_buf_q_alloc_phy_addr;
2620         set_bit(QL_ALLOC_BUFQS_DONE, &qdev->flags);
2621         return 0;
2622 }
2623
2624 static void ql_free_buffer_queues(struct ql3_adapter *qdev)
2625 {
2626         if (!test_bit(QL_ALLOC_BUFQS_DONE, &qdev->flags)) {
2627                 netdev_info(qdev->ndev, "Already done\n");
2628                 return;
2629         }
2630         kfree(qdev->lrg_buf);
2631         dma_free_coherent(&qdev->pdev->dev, qdev->lrg_buf_q_alloc_size,
2632                           qdev->lrg_buf_q_alloc_virt_addr,
2633                           qdev->lrg_buf_q_alloc_phy_addr);
2634
2635         qdev->lrg_buf_q_virt_addr = NULL;
2636
2637         dma_free_coherent(&qdev->pdev->dev, qdev->small_buf_q_alloc_size,
2638                           qdev->small_buf_q_alloc_virt_addr,
2639                           qdev->small_buf_q_alloc_phy_addr);
2640
2641         qdev->small_buf_q_virt_addr = NULL;
2642
2643         clear_bit(QL_ALLOC_BUFQS_DONE, &qdev->flags);
2644 }
2645
2646 static int ql_alloc_small_buffers(struct ql3_adapter *qdev)
2647 {
2648         int i;
2649         struct bufq_addr_element *small_buf_q_entry;
2650
2651         /* Currently we allocate on one of memory and use it for smallbuffers */
2652         qdev->small_buf_total_size =
2653                 (QL_ADDR_ELE_PER_BUFQ_ENTRY * NUM_SBUFQ_ENTRIES *
2654                  QL_SMALL_BUFFER_SIZE);
2655
2656         qdev->small_buf_virt_addr =
2657                 dma_alloc_coherent(&qdev->pdev->dev,
2658                                    qdev->small_buf_total_size,
2659                                    &qdev->small_buf_phy_addr, GFP_KERNEL);
2660
2661         if (qdev->small_buf_virt_addr == NULL) {
2662                 netdev_err(qdev->ndev, "Failed to get small buffer memory\n");
2663                 return -ENOMEM;
2664         }
2665
2666         qdev->small_buf_phy_addr_low = LS_64BITS(qdev->small_buf_phy_addr);
2667         qdev->small_buf_phy_addr_high = MS_64BITS(qdev->small_buf_phy_addr);
2668
2669         small_buf_q_entry = qdev->small_buf_q_virt_addr;
2670
2671         /* Initialize the small buffer queue. */
2672         for (i = 0; i < (QL_ADDR_ELE_PER_BUFQ_ENTRY * NUM_SBUFQ_ENTRIES); i++) {
2673                 small_buf_q_entry->addr_high =
2674                     cpu_to_le32(qdev->small_buf_phy_addr_high);
2675                 small_buf_q_entry->addr_low =
2676                     cpu_to_le32(qdev->small_buf_phy_addr_low +
2677                                 (i * QL_SMALL_BUFFER_SIZE));
2678                 small_buf_q_entry++;
2679         }
2680         qdev->small_buf_index = 0;
2681         set_bit(QL_ALLOC_SMALL_BUF_DONE, &qdev->flags);
2682         return 0;
2683 }
2684
2685 static void ql_free_small_buffers(struct ql3_adapter *qdev)
2686 {
2687         if (!test_bit(QL_ALLOC_SMALL_BUF_DONE, &qdev->flags)) {
2688                 netdev_info(qdev->ndev, "Already done\n");
2689                 return;
2690         }
2691         if (qdev->small_buf_virt_addr != NULL) {
2692                 dma_free_coherent(&qdev->pdev->dev,
2693                                   qdev->small_buf_total_size,
2694                                   qdev->small_buf_virt_addr,
2695                                   qdev->small_buf_phy_addr);
2696
2697                 qdev->small_buf_virt_addr = NULL;
2698         }
2699 }
2700
2701 static void ql_free_large_buffers(struct ql3_adapter *qdev)
2702 {
2703         int i = 0;
2704         struct ql_rcv_buf_cb *lrg_buf_cb;
2705
2706         for (i = 0; i < qdev->num_large_buffers; i++) {
2707                 lrg_buf_cb = &qdev->lrg_buf[i];
2708                 if (lrg_buf_cb->skb) {
2709                         dev_kfree_skb(lrg_buf_cb->skb);
2710                         dma_unmap_single(&qdev->pdev->dev,
2711                                          dma_unmap_addr(lrg_buf_cb, mapaddr),
2712                                          dma_unmap_len(lrg_buf_cb, maplen),
2713                                          DMA_FROM_DEVICE);
2714                         memset(lrg_buf_cb, 0, sizeof(struct ql_rcv_buf_cb));
2715                 } else {
2716                         break;
2717                 }
2718         }
2719 }
2720
2721 static void ql_init_large_buffers(struct ql3_adapter *qdev)
2722 {
2723         int i;
2724         struct ql_rcv_buf_cb *lrg_buf_cb;
2725         struct bufq_addr_element *buf_addr_ele = qdev->lrg_buf_q_virt_addr;
2726
2727         for (i = 0; i < qdev->num_large_buffers; i++) {
2728                 lrg_buf_cb = &qdev->lrg_buf[i];
2729                 buf_addr_ele->addr_high = lrg_buf_cb->buf_phy_addr_high;
2730                 buf_addr_ele->addr_low = lrg_buf_cb->buf_phy_addr_low;
2731                 buf_addr_ele++;
2732         }
2733         qdev->lrg_buf_index = 0;
2734         qdev->lrg_buf_skb_check = 0;
2735 }
2736
2737 static int ql_alloc_large_buffers(struct ql3_adapter *qdev)
2738 {
2739         int i;
2740         struct ql_rcv_buf_cb *lrg_buf_cb;
2741         struct sk_buff *skb;
2742         dma_addr_t map;
2743         int err;
2744
2745         for (i = 0; i < qdev->num_large_buffers; i++) {
2746                 lrg_buf_cb = &qdev->lrg_buf[i];
2747                 memset(lrg_buf_cb, 0, sizeof(struct ql_rcv_buf_cb));
2748
2749                 skb = netdev_alloc_skb(qdev->ndev,
2750                                        qdev->lrg_buffer_len);
2751                 if (unlikely(!skb)) {
2752                         /* Better luck next round */
2753                         netdev_err(qdev->ndev,
2754                                    "large buff alloc failed for %d bytes at index %d\n",
2755                                    qdev->lrg_buffer_len * 2, i);
2756                         ql_free_large_buffers(qdev);
2757                         return -ENOMEM;
2758                 } else {
2759                         lrg_buf_cb->index = i;
2760                         /*
2761                          * We save some space to copy the ethhdr from first
2762                          * buffer
2763                          */
2764                         skb_reserve(skb, QL_HEADER_SPACE);
2765                         map = dma_map_single(&qdev->pdev->dev, skb->data,
2766                                              qdev->lrg_buffer_len - QL_HEADER_SPACE,
2767                                              DMA_FROM_DEVICE);
2768
2769                         err = dma_mapping_error(&qdev->pdev->dev, map);
2770                         if (err) {
2771                                 netdev_err(qdev->ndev,
2772                                            "PCI mapping failed with error: %d\n",
2773                                            err);
2774                                 dev_kfree_skb_irq(skb);
2775                                 ql_free_large_buffers(qdev);
2776                                 return -ENOMEM;
2777                         }
2778
2779                         lrg_buf_cb->skb = skb;
2780                         dma_unmap_addr_set(lrg_buf_cb, mapaddr, map);
2781                         dma_unmap_len_set(lrg_buf_cb, maplen,
2782                                           qdev->lrg_buffer_len -
2783                                           QL_HEADER_SPACE);
2784                         lrg_buf_cb->buf_phy_addr_low =
2785                             cpu_to_le32(LS_64BITS(map));
2786                         lrg_buf_cb->buf_phy_addr_high =
2787                             cpu_to_le32(MS_64BITS(map));
2788                 }
2789         }
2790         return 0;
2791 }
2792
2793 static void ql_free_send_free_list(struct ql3_adapter *qdev)
2794 {
2795         struct ql_tx_buf_cb *tx_cb;
2796         int i;
2797
2798         tx_cb = &qdev->tx_buf[0];
2799         for (i = 0; i < NUM_REQ_Q_ENTRIES; i++) {
2800                 kfree(tx_cb->oal);
2801                 tx_cb->oal = NULL;
2802                 tx_cb++;
2803         }
2804 }
2805
2806 static int ql_create_send_free_list(struct ql3_adapter *qdev)
2807 {
2808         struct ql_tx_buf_cb *tx_cb;
2809         int i;
2810         struct ob_mac_iocb_req *req_q_curr = qdev->req_q_virt_addr;
2811
2812         /* Create free list of transmit buffers */
2813         for (i = 0; i < NUM_REQ_Q_ENTRIES; i++) {
2814
2815                 tx_cb = &qdev->tx_buf[i];
2816                 tx_cb->skb = NULL;
2817                 tx_cb->queue_entry = req_q_curr;
2818                 req_q_curr++;
2819                 tx_cb->oal = kmalloc(512, GFP_KERNEL);
2820                 if (tx_cb->oal == NULL)
2821                         return -ENOMEM;
2822         }
2823         return 0;
2824 }
2825
2826 static int ql_alloc_mem_resources(struct ql3_adapter *qdev)
2827 {
2828         if (qdev->ndev->mtu == NORMAL_MTU_SIZE) {
2829                 qdev->num_lbufq_entries = NUM_LBUFQ_ENTRIES;
2830                 qdev->lrg_buffer_len = NORMAL_MTU_SIZE;
2831         } else if (qdev->ndev->mtu == JUMBO_MTU_SIZE) {
2832                 /*
2833                  * Bigger buffers, so less of them.
2834                  */
2835                 qdev->num_lbufq_entries = JUMBO_NUM_LBUFQ_ENTRIES;
2836                 qdev->lrg_buffer_len = JUMBO_MTU_SIZE;
2837         } else {
2838                 netdev_err(qdev->ndev, "Invalid mtu size: %d.  Only %d and %d are accepted.\n",
2839                            qdev->ndev->mtu, NORMAL_MTU_SIZE, JUMBO_MTU_SIZE);
2840                 return -ENOMEM;
2841         }
2842         qdev->num_large_buffers =
2843                 qdev->num_lbufq_entries * QL_ADDR_ELE_PER_BUFQ_ENTRY;
2844         qdev->lrg_buffer_len += VLAN_ETH_HLEN + VLAN_ID_LEN + QL_HEADER_SPACE;
2845         qdev->max_frame_size =
2846                 (qdev->lrg_buffer_len - QL_HEADER_SPACE) + ETHERNET_CRC_SIZE;
2847
2848         /*
2849          * First allocate a page of shared memory and use it for shadow
2850          * locations of Network Request Queue Consumer Address Register and
2851          * Network Completion Queue Producer Index Register
2852          */
2853         qdev->shadow_reg_virt_addr =
2854                 dma_alloc_coherent(&qdev->pdev->dev, PAGE_SIZE,
2855                                    &qdev->shadow_reg_phy_addr, GFP_KERNEL);
2856
2857         if (qdev->shadow_reg_virt_addr != NULL) {
2858                 qdev->preq_consumer_index = qdev->shadow_reg_virt_addr;
2859                 qdev->req_consumer_index_phy_addr_high =
2860                         MS_64BITS(qdev->shadow_reg_phy_addr);
2861                 qdev->req_consumer_index_phy_addr_low =
2862                         LS_64BITS(qdev->shadow_reg_phy_addr);
2863
2864                 qdev->prsp_producer_index =
2865                         (__le32 *) (((u8 *) qdev->preq_consumer_index) + 8);
2866                 qdev->rsp_producer_index_phy_addr_high =
2867                         qdev->req_consumer_index_phy_addr_high;
2868                 qdev->rsp_producer_index_phy_addr_low =
2869                         qdev->req_consumer_index_phy_addr_low + 8;
2870         } else {
2871                 netdev_err(qdev->ndev, "shadowReg Alloc failed\n");
2872                 return -ENOMEM;
2873         }
2874
2875         if (ql_alloc_net_req_rsp_queues(qdev) != 0) {
2876                 netdev_err(qdev->ndev, "ql_alloc_net_req_rsp_queues failed\n");
2877                 goto err_req_rsp;
2878         }
2879
2880         if (ql_alloc_buffer_queues(qdev) != 0) {
2881                 netdev_err(qdev->ndev, "ql_alloc_buffer_queues failed\n");
2882                 goto err_buffer_queues;
2883         }
2884
2885         if (ql_alloc_small_buffers(qdev) != 0) {
2886                 netdev_err(qdev->ndev, "ql_alloc_small_buffers failed\n");
2887                 goto err_small_buffers;
2888         }
2889
2890         if (ql_alloc_large_buffers(qdev) != 0) {
2891                 netdev_err(qdev->ndev, "ql_alloc_large_buffers failed\n");
2892                 goto err_small_buffers;
2893         }
2894
2895         /* Initialize the large buffer queue. */
2896         ql_init_large_buffers(qdev);
2897         if (ql_create_send_free_list(qdev))
2898                 goto err_free_list;
2899
2900         qdev->rsp_current = qdev->rsp_q_virt_addr;
2901
2902         return 0;
2903 err_free_list:
2904         ql_free_send_free_list(qdev);
2905 err_small_buffers:
2906         ql_free_buffer_queues(qdev);
2907 err_buffer_queues:
2908         ql_free_net_req_rsp_queues(qdev);
2909 err_req_rsp:
2910         dma_free_coherent(&qdev->pdev->dev, PAGE_SIZE,
2911                           qdev->shadow_reg_virt_addr,
2912                           qdev->shadow_reg_phy_addr);
2913
2914         return -ENOMEM;
2915 }
2916
2917 static void ql_free_mem_resources(struct ql3_adapter *qdev)
2918 {
2919         ql_free_send_free_list(qdev);
2920         ql_free_large_buffers(qdev);
2921         ql_free_small_buffers(qdev);
2922         ql_free_buffer_queues(qdev);
2923         ql_free_net_req_rsp_queues(qdev);
2924         if (qdev->shadow_reg_virt_addr != NULL) {
2925                 dma_free_coherent(&qdev->pdev->dev, PAGE_SIZE,
2926                                   qdev->shadow_reg_virt_addr,
2927                                   qdev->shadow_reg_phy_addr);
2928                 qdev->shadow_reg_virt_addr = NULL;
2929         }
2930 }
2931
2932 static int ql_init_misc_registers(struct ql3_adapter *qdev)
2933 {
2934         struct ql3xxx_local_ram_registers __iomem *local_ram =
2935             (void __iomem *)qdev->mem_map_registers;
2936
2937         if (ql_sem_spinlock(qdev, QL_DDR_RAM_SEM_MASK,
2938                         (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index) *
2939                          2) << 4))
2940                 return -1;
2941
2942         ql_write_page2_reg(qdev,
2943                            &local_ram->bufletSize, qdev->nvram_data.bufletSize);
2944
2945         ql_write_page2_reg(qdev,
2946                            &local_ram->maxBufletCount,
2947                            qdev->nvram_data.bufletCount);
2948
2949         ql_write_page2_reg(qdev,
2950                            &local_ram->freeBufletThresholdLow,
2951                            (qdev->nvram_data.tcpWindowThreshold25 << 16) |
2952                            (qdev->nvram_data.tcpWindowThreshold0));
2953
2954         ql_write_page2_reg(qdev,
2955                            &local_ram->freeBufletThresholdHigh,
2956                            qdev->nvram_data.tcpWindowThreshold50);
2957
2958         ql_write_page2_reg(qdev,
2959                            &local_ram->ipHashTableBase,
2960                            (qdev->nvram_data.ipHashTableBaseHi << 16) |
2961                            qdev->nvram_data.ipHashTableBaseLo);
2962         ql_write_page2_reg(qdev,
2963                            &local_ram->ipHashTableCount,
2964                            qdev->nvram_data.ipHashTableSize);
2965         ql_write_page2_reg(qdev,
2966                            &local_ram->tcpHashTableBase,
2967                            (qdev->nvram_data.tcpHashTableBaseHi << 16) |
2968                            qdev->nvram_data.tcpHashTableBaseLo);
2969         ql_write_page2_reg(qdev,
2970                            &local_ram->tcpHashTableCount,
2971                            qdev->nvram_data.tcpHashTableSize);
2972         ql_write_page2_reg(qdev,
2973                            &local_ram->ncbBase,
2974                            (qdev->nvram_data.ncbTableBaseHi << 16) |
2975                            qdev->nvram_data.ncbTableBaseLo);
2976         ql_write_page2_reg(qdev,
2977                            &local_ram->maxNcbCount,
2978                            qdev->nvram_data.ncbTableSize);
2979         ql_write_page2_reg(qdev,
2980                            &local_ram->drbBase,
2981                            (qdev->nvram_data.drbTableBaseHi << 16) |
2982                            qdev->nvram_data.drbTableBaseLo);
2983         ql_write_page2_reg(qdev,
2984                            &local_ram->maxDrbCount,
2985                            qdev->nvram_data.drbTableSize);
2986         ql_sem_unlock(qdev, QL_DDR_RAM_SEM_MASK);
2987         return 0;
2988 }
2989
2990 static int ql_adapter_initialize(struct ql3_adapter *qdev)
2991 {
2992         u32 value;
2993         struct ql3xxx_port_registers __iomem *port_regs =
2994                 qdev->mem_map_registers;
2995         __iomem u32 *spir = &port_regs->CommonRegs.serialPortInterfaceReg;
2996         struct ql3xxx_host_memory_registers __iomem *hmem_regs =
2997                 (void __iomem *)port_regs;
2998         u32 delay = 10;
2999         int status = 0;
3000
3001         if (ql_mii_setup(qdev))
3002                 return -1;
3003
3004         /* Bring out PHY out of reset */
3005         ql_write_common_reg(qdev, spir,
3006                             (ISP_SERIAL_PORT_IF_WE |
3007                              (ISP_SERIAL_PORT_IF_WE << 16)));
3008         /* Give the PHY time to come out of reset. */
3009         mdelay(100);
3010         qdev->port_link_state = LS_DOWN;
3011         netif_carrier_off(qdev->ndev);
3012
3013         /* V2 chip fix for ARS-39168. */
3014         ql_write_common_reg(qdev, spir,
3015                             (ISP_SERIAL_PORT_IF_SDE |
3016                              (ISP_SERIAL_PORT_IF_SDE << 16)));
3017
3018         /* Request Queue Registers */
3019         *((u32 *)(qdev->preq_consumer_index)) = 0;
3020         atomic_set(&qdev->tx_count, NUM_REQ_Q_ENTRIES);
3021         qdev->req_producer_index = 0;
3022
3023         ql_write_page1_reg(qdev,
3024                            &hmem_regs->reqConsumerIndexAddrHigh,
3025                            qdev->req_consumer_index_phy_addr_high);
3026         ql_write_page1_reg(qdev,
3027                            &hmem_regs->reqConsumerIndexAddrLow,
3028                            qdev->req_consumer_index_phy_addr_low);
3029
3030         ql_write_page1_reg(qdev,
3031                            &hmem_regs->reqBaseAddrHigh,
3032                            MS_64BITS(qdev->req_q_phy_addr));
3033         ql_write_page1_reg(qdev,
3034                            &hmem_regs->reqBaseAddrLow,
3035                            LS_64BITS(qdev->req_q_phy_addr));
3036         ql_write_page1_reg(qdev, &hmem_regs->reqLength, NUM_REQ_Q_ENTRIES);
3037
3038         /* Response Queue Registers */
3039         *((__le16 *) (qdev->prsp_producer_index)) = 0;
3040         qdev->rsp_consumer_index = 0;
3041         qdev->rsp_current = qdev->rsp_q_virt_addr;
3042
3043         ql_write_page1_reg(qdev,
3044                            &hmem_regs->rspProducerIndexAddrHigh,
3045                            qdev->rsp_producer_index_phy_addr_high);
3046
3047         ql_write_page1_reg(qdev,
3048                            &hmem_regs->rspProducerIndexAddrLow,
3049                            qdev->rsp_producer_index_phy_addr_low);
3050
3051         ql_write_page1_reg(qdev,
3052                            &hmem_regs->rspBaseAddrHigh,
3053                            MS_64BITS(qdev->rsp_q_phy_addr));
3054
3055         ql_write_page1_reg(qdev,
3056                            &hmem_regs->rspBaseAddrLow,
3057                            LS_64BITS(qdev->rsp_q_phy_addr));
3058
3059         ql_write_page1_reg(qdev, &hmem_regs->rspLength, NUM_RSP_Q_ENTRIES);
3060
3061         /* Large Buffer Queue */
3062         ql_write_page1_reg(qdev,
3063                            &hmem_regs->rxLargeQBaseAddrHigh,
3064                            MS_64BITS(qdev->lrg_buf_q_phy_addr));
3065
3066         ql_write_page1_reg(qdev,
3067                            &hmem_regs->rxLargeQBaseAddrLow,
3068                            LS_64BITS(qdev->lrg_buf_q_phy_addr));
3069
3070         ql_write_page1_reg(qdev,
3071                            &hmem_regs->rxLargeQLength,
3072                            qdev->num_lbufq_entries);
3073
3074         ql_write_page1_reg(qdev,
3075                            &hmem_regs->rxLargeBufferLength,
3076                            qdev->lrg_buffer_len);
3077
3078         /* Small Buffer Queue */
3079         ql_write_page1_reg(qdev,
3080                            &hmem_regs->rxSmallQBaseAddrHigh,
3081                            MS_64BITS(qdev->small_buf_q_phy_addr));
3082
3083         ql_write_page1_reg(qdev,
3084                            &hmem_regs->rxSmallQBaseAddrLow,
3085                            LS_64BITS(qdev->small_buf_q_phy_addr));
3086
3087         ql_write_page1_reg(qdev, &hmem_regs->rxSmallQLength, NUM_SBUFQ_ENTRIES);
3088         ql_write_page1_reg(qdev,
3089                            &hmem_regs->rxSmallBufferLength,
3090                            QL_SMALL_BUFFER_SIZE);
3091
3092         qdev->small_buf_q_producer_index = NUM_SBUFQ_ENTRIES - 1;
3093         qdev->small_buf_release_cnt = 8;
3094         qdev->lrg_buf_q_producer_index = qdev->num_lbufq_entries - 1;
3095         qdev->lrg_buf_release_cnt = 8;
3096         qdev->lrg_buf_next_free = qdev->lrg_buf_q_virt_addr;
3097         qdev->small_buf_index = 0;
3098         qdev->lrg_buf_index = 0;
3099         qdev->lrg_buf_free_count = 0;
3100         qdev->lrg_buf_free_head = NULL;
3101         qdev->lrg_buf_free_tail = NULL;
3102
3103         ql_write_common_reg(qdev,
3104                             &port_regs->CommonRegs.
3105                             rxSmallQProducerIndex,
3106                             qdev->small_buf_q_producer_index);
3107         ql_write_common_reg(qdev,
3108                             &port_regs->CommonRegs.
3109                             rxLargeQProducerIndex,
3110                             qdev->lrg_buf_q_producer_index);
3111
3112         /*
3113          * Find out if the chip has already been initialized.  If it has, then
3114          * we skip some of the initialization.
3115          */
3116         clear_bit(QL_LINK_MASTER, &qdev->flags);
3117         value = ql_read_page0_reg(qdev, &port_regs->portStatus);
3118         if ((value & PORT_STATUS_IC) == 0) {
3119
3120                 /* Chip has not been configured yet, so let it rip. */
3121                 if (ql_init_misc_registers(qdev)) {
3122                         status = -1;
3123                         goto out;
3124                 }
3125
3126                 value = qdev->nvram_data.tcpMaxWindowSize;
3127                 ql_write_page0_reg(qdev, &port_regs->tcpMaxWindow, value);
3128
3129                 value = (0xFFFF << 16) | qdev->nvram_data.extHwConfig;
3130
3131                 if (ql_sem_spinlock(qdev, QL_FLASH_SEM_MASK,
3132                                 (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index)
3133                                  * 2) << 13)) {
3134                         status = -1;
3135                         goto out;
3136                 }
3137                 ql_write_page0_reg(qdev, &port_regs->ExternalHWConfig, value);
3138                 ql_write_page0_reg(qdev, &port_regs->InternalChipConfig,
3139                                    (((INTERNAL_CHIP_SD | INTERNAL_CHIP_WE) <<
3140                                      16) | (INTERNAL_CHIP_SD |
3141                                             INTERNAL_CHIP_WE)));
3142                 ql_sem_unlock(qdev, QL_FLASH_SEM_MASK);
3143         }
3144
3145         if (qdev->mac_index)
3146                 ql_write_page0_reg(qdev,
3147                                    &port_regs->mac1MaxFrameLengthReg,
3148                                    qdev->max_frame_size);
3149         else
3150                 ql_write_page0_reg(qdev,
3151                                            &port_regs->mac0MaxFrameLengthReg,
3152                                            qdev->max_frame_size);
3153
3154         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
3155                         (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index) *
3156                          2) << 7)) {
3157                 status = -1;
3158                 goto out;
3159         }
3160
3161         PHY_Setup(qdev);
3162         ql_init_scan_mode(qdev);
3163         ql_get_phy_owner(qdev);
3164
3165         /* Load the MAC Configuration */
3166
3167         /* Program lower 32 bits of the MAC address */
3168         ql_write_page0_reg(qdev, &port_regs->macAddrIndirectPtrReg,
3169                            (MAC_ADDR_INDIRECT_PTR_REG_RP_MASK << 16));
3170         ql_write_page0_reg(qdev, &port_regs->macAddrDataReg,
3171                            ((qdev->ndev->dev_addr[2] << 24)
3172                             | (qdev->ndev->dev_addr[3] << 16)
3173                             | (qdev->ndev->dev_addr[4] << 8)
3174                             | qdev->ndev->dev_addr[5]));
3175
3176         /* Program top 16 bits of the MAC address */
3177         ql_write_page0_reg(qdev, &port_regs->macAddrIndirectPtrReg,
3178                            ((MAC_ADDR_INDIRECT_PTR_REG_RP_MASK << 16) | 1));
3179         ql_write_page0_reg(qdev, &port_regs->macAddrDataReg,
3180                            ((qdev->ndev->dev_addr[0] << 8)
3181                             | qdev->ndev->dev_addr[1]));
3182
3183         /* Enable Primary MAC */
3184         ql_write_page0_reg(qdev, &port_regs->macAddrIndirectPtrReg,
3185                            ((MAC_ADDR_INDIRECT_PTR_REG_PE << 16) |
3186                             MAC_ADDR_INDIRECT_PTR_REG_PE));
3187
3188         /* Clear Primary and Secondary IP addresses */
3189         ql_write_page0_reg(qdev, &port_regs->ipAddrIndexReg,
3190                            ((IP_ADDR_INDEX_REG_MASK << 16) |
3191                             (qdev->mac_index << 2)));
3192         ql_write_page0_reg(qdev, &port_regs->ipAddrDataReg, 0);
3193
3194         ql_write_page0_reg(qdev, &port_regs->ipAddrIndexReg,
3195                            ((IP_ADDR_INDEX_REG_MASK << 16) |
3196                             ((qdev->mac_index << 2) + 1)));
3197         ql_write_page0_reg(qdev, &port_regs->ipAddrDataReg, 0);
3198
3199         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
3200
3201         /* Indicate Configuration Complete */
3202         ql_write_page0_reg(qdev,
3203                            &port_regs->portControl,
3204                            ((PORT_CONTROL_CC << 16) | PORT_CONTROL_CC));
3205
3206         do {
3207                 value = ql_read_page0_reg(qdev, &port_regs->portStatus);
3208                 if (value & PORT_STATUS_IC)
3209                         break;
3210                 spin_unlock_irq(&qdev->hw_lock);
3211                 msleep(500);
3212                 spin_lock_irq(&qdev->hw_lock);
3213         } while (--delay);
3214
3215         if (delay == 0) {
3216                 netdev_err(qdev->ndev, "Hw Initialization timeout\n");
3217                 status = -1;
3218                 goto out;
3219         }
3220
3221         /* Enable Ethernet Function */
3222         if (qdev->device_id == QL3032_DEVICE_ID) {
3223                 value =
3224                     (QL3032_PORT_CONTROL_EF | QL3032_PORT_CONTROL_KIE |
3225                      QL3032_PORT_CONTROL_EIv6 | QL3032_PORT_CONTROL_EIv4 |
3226                         QL3032_PORT_CONTROL_ET);
3227                 ql_write_page0_reg(qdev, &port_regs->functionControl,
3228                                    ((value << 16) | value));
3229         } else {
3230                 value =
3231                     (PORT_CONTROL_EF | PORT_CONTROL_ET | PORT_CONTROL_EI |
3232                      PORT_CONTROL_HH);
3233                 ql_write_page0_reg(qdev, &port_regs->portControl,
3234                                    ((value << 16) | value));
3235         }
3236
3237
3238 out:
3239         return status;
3240 }
3241
3242 /*
3243  * Caller holds hw_lock.
3244  */
3245 static int ql_adapter_reset(struct ql3_adapter *qdev)
3246 {
3247         struct ql3xxx_port_registers __iomem *port_regs =
3248                 qdev->mem_map_registers;
3249         int status = 0;
3250         u16 value;
3251         int max_wait_time;
3252
3253         set_bit(QL_RESET_ACTIVE, &qdev->flags);
3254         clear_bit(QL_RESET_DONE, &qdev->flags);
3255
3256         /*
3257          * Issue soft reset to chip.
3258          */
3259         netdev_printk(KERN_DEBUG, qdev->ndev, "Issue soft reset to chip\n");
3260         ql_write_common_reg(qdev,
3261                             &port_regs->CommonRegs.ispControlStatus,
3262                             ((ISP_CONTROL_SR << 16) | ISP_CONTROL_SR));
3263
3264         /* Wait 3 seconds for reset to complete. */
3265         netdev_printk(KERN_DEBUG, qdev->ndev,
3266                       "Wait 10 milliseconds for reset to complete\n");
3267
3268         /* Wait until the firmware tells us the Soft Reset is done */
3269         max_wait_time = 5;
3270         do {
3271                 value =
3272                     ql_read_common_reg(qdev,
3273                                        &port_regs->CommonRegs.ispControlStatus);
3274                 if ((value & ISP_CONTROL_SR) == 0)
3275                         break;
3276
3277                 mdelay(1000);
3278         } while ((--max_wait_time));
3279
3280         /*
3281          * Also, make sure that the Network Reset Interrupt bit has been
3282          * cleared after the soft reset has taken place.
3283          */
3284         value =
3285             ql_read_common_reg(qdev, &port_regs->CommonRegs.ispControlStatus);
3286         if (value & ISP_CONTROL_RI) {
3287                 netdev_printk(KERN_DEBUG, qdev->ndev,
3288                               "clearing RI after reset\n");
3289                 ql_write_common_reg(qdev,
3290                                     &port_regs->CommonRegs.
3291                                     ispControlStatus,
3292                                     ((ISP_CONTROL_RI << 16) | ISP_CONTROL_RI));
3293         }
3294
3295         if (max_wait_time == 0) {
3296                 /* Issue Force Soft Reset */
3297                 ql_write_common_reg(qdev,
3298                                     &port_regs->CommonRegs.
3299                                     ispControlStatus,
3300                                     ((ISP_CONTROL_FSR << 16) |
3301                                      ISP_CONTROL_FSR));
3302                 /*
3303                  * Wait until the firmware tells us the Force Soft Reset is
3304                  * done
3305                  */
3306                 max_wait_time = 5;
3307                 do {
3308                         value = ql_read_common_reg(qdev,
3309                                                    &port_regs->CommonRegs.
3310                                                    ispControlStatus);
3311                         if ((value & ISP_CONTROL_FSR) == 0)
3312                                 break;
3313                         mdelay(1000);
3314                 } while ((--max_wait_time));
3315         }
3316         if (max_wait_time == 0)
3317                 status = 1;
3318
3319         clear_bit(QL_RESET_ACTIVE, &qdev->flags);
3320         set_bit(QL_RESET_DONE, &qdev->flags);
3321         return status;
3322 }
3323
3324 static void ql_set_mac_info(struct ql3_adapter *qdev)
3325 {
3326         struct ql3xxx_port_registers __iomem *port_regs =
3327                 qdev->mem_map_registers;
3328         u32 value, port_status;
3329         u8 func_number;
3330
3331         /* Get the function number */
3332         value =
3333             ql_read_common_reg_l(qdev, &port_regs->CommonRegs.ispControlStatus);
3334         func_number = (u8) ((value >> 4) & OPCODE_FUNC_ID_MASK);
3335         port_status = ql_read_page0_reg(qdev, &port_regs->portStatus);
3336         switch (value & ISP_CONTROL_FN_MASK) {
3337         case ISP_CONTROL_FN0_NET:
3338                 qdev->mac_index = 0;
3339                 qdev->mac_ob_opcode = OUTBOUND_MAC_IOCB | func_number;
3340                 qdev->mb_bit_mask = FN0_MA_BITS_MASK;
3341                 qdev->PHYAddr = PORT0_PHY_ADDRESS;
3342                 if (port_status & PORT_STATUS_SM0)
3343                         set_bit(QL_LINK_OPTICAL, &qdev->flags);
3344                 else
3345                         clear_bit(QL_LINK_OPTICAL, &qdev->flags);
3346                 break;
3347
3348         case ISP_CONTROL_FN1_NET:
3349                 qdev->mac_index = 1;
3350                 qdev->mac_ob_opcode = OUTBOUND_MAC_IOCB | func_number;
3351                 qdev->mb_bit_mask = FN1_MA_BITS_MASK;
3352                 qdev->PHYAddr = PORT1_PHY_ADDRESS;
3353                 if (port_status & PORT_STATUS_SM1)
3354                         set_bit(QL_LINK_OPTICAL, &qdev->flags);
3355                 else
3356                         clear_bit(QL_LINK_OPTICAL, &qdev->flags);
3357                 break;
3358
3359         case ISP_CONTROL_FN0_SCSI:
3360         case ISP_CONTROL_FN1_SCSI:
3361         default:
3362                 netdev_printk(KERN_DEBUG, qdev->ndev,
3363                               "Invalid function number, ispControlStatus = 0x%x\n",
3364                               value);
3365                 break;
3366         }
3367         qdev->numPorts = qdev->nvram_data.version_and_numPorts >> 8;
3368 }
3369
3370 static void ql_display_dev_info(struct net_device *ndev)
3371 {
3372         struct ql3_adapter *qdev = netdev_priv(ndev);
3373         struct pci_dev *pdev = qdev->pdev;
3374
3375         netdev_info(ndev,
3376                     "%s Adapter %d RevisionID %d found %s on PCI slot %d\n",
3377                     DRV_NAME, qdev->index, qdev->chip_rev_id,
3378                     qdev->device_id == QL3032_DEVICE_ID ? "QLA3032" : "QLA3022",
3379                     qdev->pci_slot);
3380         netdev_info(ndev, "%s Interface\n",
3381                 test_bit(QL_LINK_OPTICAL, &qdev->flags) ? "OPTICAL" : "COPPER");
3382
3383         /*
3384          * Print PCI bus width/type.
3385          */
3386         netdev_info(ndev, "Bus interface is %s %s\n",
3387                     ((qdev->pci_width == 64) ? "64-bit" : "32-bit"),
3388                     ((qdev->pci_x) ? "PCI-X" : "PCI"));
3389
3390         netdev_info(ndev, "mem  IO base address adjusted = 0x%p\n",
3391                     qdev->mem_map_registers);
3392         netdev_info(ndev, "Interrupt number = %d\n", pdev->irq);
3393
3394         netif_info(qdev, probe, ndev, "MAC address %pM\n", ndev->dev_addr);
3395 }
3396
3397 static int ql_adapter_down(struct ql3_adapter *qdev, int do_reset)
3398 {
3399         struct net_device *ndev = qdev->ndev;
3400         int retval = 0;
3401
3402         netif_stop_queue(ndev);
3403         netif_carrier_off(ndev);
3404
3405         clear_bit(QL_ADAPTER_UP, &qdev->flags);
3406         clear_bit(QL_LINK_MASTER, &qdev->flags);
3407
3408         ql_disable_interrupts(qdev);
3409
3410         free_irq(qdev->pdev->irq, ndev);
3411
3412         if (qdev->msi && test_bit(QL_MSI_ENABLED, &qdev->flags)) {
3413                 netdev_info(qdev->ndev, "calling pci_disable_msi()\n");
3414                 clear_bit(QL_MSI_ENABLED, &qdev->flags);
3415                 pci_disable_msi(qdev->pdev);
3416         }
3417
3418         del_timer_sync(&qdev->adapter_timer);
3419
3420         napi_disable(&qdev->napi);
3421
3422         if (do_reset) {
3423                 int soft_reset;
3424                 unsigned long hw_flags;
3425
3426                 spin_lock_irqsave(&qdev->hw_lock, hw_flags);
3427                 if (ql_wait_for_drvr_lock(qdev)) {
3428                         soft_reset = ql_adapter_reset(qdev);
3429                         if (soft_reset) {
3430                                 netdev_err(ndev, "ql_adapter_reset(%d) FAILED!\n",
3431                                            qdev->index);
3432                         }
3433                         netdev_err(ndev,
3434                                    "Releasing driver lock via chip reset\n");
3435                 } else {
3436                         netdev_err(ndev,
3437                                    "Could not acquire driver lock to do reset!\n");
3438                         retval = -1;
3439                 }
3440                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
3441         }
3442         ql_free_mem_resources(qdev);
3443         return retval;
3444 }
3445
3446 static int ql_adapter_up(struct ql3_adapter *qdev)
3447 {
3448         struct net_device *ndev = qdev->ndev;
3449         int err;
3450         unsigned long irq_flags = IRQF_SHARED;
3451         unsigned long hw_flags;
3452
3453         if (ql_alloc_mem_resources(qdev)) {
3454                 netdev_err(ndev, "Unable to  allocate buffers\n");
3455                 return -ENOMEM;
3456         }
3457
3458         if (qdev->msi) {
3459                 if (pci_enable_msi(qdev->pdev)) {
3460                         netdev_err(ndev,
3461                                    "User requested MSI, but MSI failed to initialize.  Continuing without MSI.\n");
3462                         qdev->msi = 0;
3463                 } else {
3464                         netdev_info(ndev, "MSI Enabled...\n");
3465                         set_bit(QL_MSI_ENABLED, &qdev->flags);
3466                         irq_flags &= ~IRQF_SHARED;
3467                 }
3468         }
3469
3470         err = request_irq(qdev->pdev->irq, ql3xxx_isr,
3471                           irq_flags, ndev->name, ndev);
3472         if (err) {
3473                 netdev_err(ndev,
3474                            "Failed to reserve interrupt %d - already in use\n",
3475                            qdev->pdev->irq);
3476                 goto err_irq;
3477         }
3478
3479         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
3480
3481         err = ql_wait_for_drvr_lock(qdev);
3482         if (err) {
3483                 err = ql_adapter_initialize(qdev);
3484                 if (err) {
3485                         netdev_err(ndev, "Unable to initialize adapter\n");
3486                         goto err_init;
3487                 }
3488                 netdev_err(ndev, "Releasing driver lock\n");
3489                 ql_sem_unlock(qdev, QL_DRVR_SEM_MASK);
3490         } else {
3491                 netdev_err(ndev, "Could not acquire driver lock\n");
3492                 goto err_lock;
3493         }
3494
3495         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
3496
3497         set_bit(QL_ADAPTER_UP, &qdev->flags);
3498
3499         mod_timer(&qdev->adapter_timer, jiffies + HZ * 1);
3500
3501         napi_enable(&qdev->napi);
3502         ql_enable_interrupts(qdev);
3503         return 0;
3504
3505 err_init:
3506         ql_sem_unlock(qdev, QL_DRVR_SEM_MASK);
3507 err_lock:
3508         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
3509         free_irq(qdev->pdev->irq, ndev);
3510 err_irq:
3511         if (qdev->msi && test_bit(QL_MSI_ENABLED, &qdev->flags)) {
3512                 netdev_info(ndev, "calling pci_disable_msi()\n");
3513                 clear_bit(QL_MSI_ENABLED, &qdev->flags);
3514                 pci_disable_msi(qdev->pdev);
3515         }
3516         return err;
3517 }
3518
3519 static int ql_cycle_adapter(struct ql3_adapter *qdev, int reset)
3520 {
3521         if (ql_adapter_down(qdev, reset) || ql_adapter_up(qdev)) {
3522                 netdev_err(qdev->ndev,
3523                            "Driver up/down cycle failed, closing device\n");
3524                 rtnl_lock();
3525                 dev_close(qdev->ndev);
3526                 rtnl_unlock();
3527                 return -1;
3528         }
3529         return 0;
3530 }
3531
3532 static int ql3xxx_close(struct net_device *ndev)
3533 {
3534         struct ql3_adapter *qdev = netdev_priv(ndev);
3535
3536         /*
3537          * Wait for device to recover from a reset.
3538          * (Rarely happens, but possible.)
3539          */
3540         while (!test_bit(QL_ADAPTER_UP, &qdev->flags))
3541                 msleep(50);
3542
3543         ql_adapter_down(qdev, QL_DO_RESET);
3544         return 0;
3545 }
3546
3547 static int ql3xxx_open(struct net_device *ndev)
3548 {
3549         struct ql3_adapter *qdev = netdev_priv(ndev);
3550         return ql_adapter_up(qdev);
3551 }
3552
3553 static int ql3xxx_set_mac_address(struct net_device *ndev, void *p)
3554 {
3555         struct ql3_adapter *qdev = netdev_priv(ndev);
3556         struct ql3xxx_port_registers __iomem *port_regs =
3557                         qdev->mem_map_registers;
3558         struct sockaddr *addr = p;
3559         unsigned long hw_flags;
3560
3561         if (netif_running(ndev))
3562                 return -EBUSY;
3563
3564         if (!is_valid_ether_addr(addr->sa_data))
3565                 return -EADDRNOTAVAIL;
3566
3567         memcpy(ndev->dev_addr, addr->sa_data, ndev->addr_len);
3568
3569         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
3570         /* Program lower 32 bits of the MAC address */
3571         ql_write_page0_reg(qdev, &port_regs->macAddrIndirectPtrReg,
3572                            (MAC_ADDR_INDIRECT_PTR_REG_RP_MASK << 16));
3573         ql_write_page0_reg(qdev, &port_regs->macAddrDataReg,
3574                            ((ndev->dev_addr[2] << 24) | (ndev->
3575                                                          dev_addr[3] << 16) |
3576                             (ndev->dev_addr[4] << 8) | ndev->dev_addr[5]));
3577
3578         /* Program top 16 bits of the MAC address */
3579         ql_write_page0_reg(qdev, &port_regs->macAddrIndirectPtrReg,
3580                            ((MAC_ADDR_INDIRECT_PTR_REG_RP_MASK << 16) | 1));
3581         ql_write_page0_reg(qdev, &port_regs->macAddrDataReg,
3582                            ((ndev->dev_addr[0] << 8) | ndev->dev_addr[1]));
3583         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
3584
3585         return 0;
3586 }
3587
3588 static void ql3xxx_tx_timeout(struct net_device *ndev, unsigned int txqueue)
3589 {
3590         struct ql3_adapter *qdev = netdev_priv(ndev);
3591
3592         netdev_err(ndev, "Resetting...\n");
3593         /*
3594          * Stop the queues, we've got a problem.
3595          */
3596         netif_stop_queue(ndev);
3597
3598         /*
3599          * Wake up the worker to process this event.
3600          */
3601         queue_delayed_work(qdev->workqueue, &qdev->tx_timeout_work, 0);
3602 }
3603
3604 static void ql_reset_work(struct work_struct *work)
3605 {
3606         struct ql3_adapter *qdev =
3607                 container_of(work, struct ql3_adapter, reset_work.work);
3608         struct net_device *ndev = qdev->ndev;
3609         u32 value;
3610         struct ql_tx_buf_cb *tx_cb;
3611         int max_wait_time, i;
3612         struct ql3xxx_port_registers __iomem *port_regs =
3613                 qdev->mem_map_registers;
3614         unsigned long hw_flags;
3615
3616         if (test_bit((QL_RESET_PER_SCSI | QL_RESET_START), &qdev->flags)) {
3617                 clear_bit(QL_LINK_MASTER, &qdev->flags);
3618
3619                 /*
3620                  * Loop through the active list and return the skb.
3621                  */
3622                 for (i = 0; i < NUM_REQ_Q_ENTRIES; i++) {
3623                         int j;
3624                         tx_cb = &qdev->tx_buf[i];
3625                         if (tx_cb->skb) {
3626                                 netdev_printk(KERN_DEBUG, ndev,
3627                                               "Freeing lost SKB\n");
3628                                 dma_unmap_single(&qdev->pdev->dev,
3629                                                  dma_unmap_addr(&tx_cb->map[0], mapaddr),
3630                                                  dma_unmap_len(&tx_cb->map[0], maplen),
3631                                                  DMA_TO_DEVICE);
3632                                 for (j = 1; j < tx_cb->seg_count; j++) {
3633                                         dma_unmap_page(&qdev->pdev->dev,
3634                                                        dma_unmap_addr(&tx_cb->map[j], mapaddr),
3635                                                        dma_unmap_len(&tx_cb->map[j], maplen),
3636                                                        DMA_TO_DEVICE);
3637                                 }
3638                                 dev_kfree_skb(tx_cb->skb);
3639                                 tx_cb->skb = NULL;
3640                         }
3641                 }
3642
3643                 netdev_err(ndev, "Clearing NRI after reset\n");
3644                 spin_lock_irqsave(&qdev->hw_lock, hw_flags);
3645                 ql_write_common_reg(qdev,
3646                                     &port_regs->CommonRegs.
3647                                     ispControlStatus,
3648                                     ((ISP_CONTROL_RI << 16) | ISP_CONTROL_RI));
3649                 /*
3650                  * Wait the for Soft Reset to Complete.
3651                  */
3652                 max_wait_time = 10;
3653                 do {
3654                         value = ql_read_common_reg(qdev,
3655                                                    &port_regs->CommonRegs.
3656
3657                                                    ispControlStatus);
3658                         if ((value & ISP_CONTROL_SR) == 0) {
3659                                 netdev_printk(KERN_DEBUG, ndev,
3660                                               "reset completed\n");
3661                                 break;
3662                         }
3663
3664                         if (value & ISP_CONTROL_RI) {
3665                                 netdev_printk(KERN_DEBUG, ndev,
3666                                               "clearing NRI after reset\n");
3667                                 ql_write_common_reg(qdev,
3668                                                     &port_regs->
3669                                                     CommonRegs.
3670                                                     ispControlStatus,
3671                                                     ((ISP_CONTROL_RI <<
3672                                                       16) | ISP_CONTROL_RI));
3673                         }
3674
3675                         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
3676                         ssleep(1);
3677                         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
3678                 } while (--max_wait_time);
3679                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
3680
3681                 if (value & ISP_CONTROL_SR) {
3682
3683                         /*
3684                          * Set the reset flags and clear the board again.
3685                          * Nothing else to do...
3686                          */
3687                         netdev_err(ndev,
3688                                    "Timed out waiting for reset to complete\n");
3689                         netdev_err(ndev, "Do a reset\n");
3690                         clear_bit(QL_RESET_PER_SCSI, &qdev->flags);
3691                         clear_bit(QL_RESET_START, &qdev->flags);
3692                         ql_cycle_adapter(qdev, QL_DO_RESET);
3693                         return;
3694                 }
3695
3696                 clear_bit(QL_RESET_ACTIVE, &qdev->flags);
3697                 clear_bit(QL_RESET_PER_SCSI, &qdev->flags);
3698                 clear_bit(QL_RESET_START, &qdev->flags);
3699                 ql_cycle_adapter(qdev, QL_NO_RESET);
3700         }
3701 }
3702
3703 static void ql_tx_timeout_work(struct work_struct *work)
3704 {
3705         struct ql3_adapter *qdev =
3706                 container_of(work, struct ql3_adapter, tx_timeout_work.work);
3707
3708         ql_cycle_adapter(qdev, QL_DO_RESET);
3709 }
3710
3711 static void ql_get_board_info(struct ql3_adapter *qdev)
3712 {
3713         struct ql3xxx_port_registers __iomem *port_regs =
3714                 qdev->mem_map_registers;
3715         u32 value;
3716
3717         value = ql_read_page0_reg_l(qdev, &port_regs->portStatus);
3718
3719         qdev->chip_rev_id = ((value & PORT_STATUS_REV_ID_MASK) >> 12);
3720         if (value & PORT_STATUS_64)
3721                 qdev->pci_width = 64;
3722         else
3723                 qdev->pci_width = 32;
3724         if (value & PORT_STATUS_X)
3725                 qdev->pci_x = 1;
3726         else
3727                 qdev->pci_x = 0;
3728         qdev->pci_slot = (u8) PCI_SLOT(qdev->pdev->devfn);
3729 }
3730
3731 static void ql3xxx_timer(struct timer_list *t)
3732 {
3733         struct ql3_adapter *qdev = from_timer(qdev, t, adapter_timer);
3734         queue_delayed_work(qdev->workqueue, &qdev->link_state_work, 0);
3735 }
3736
3737 static const struct net_device_ops ql3xxx_netdev_ops = {
3738         .ndo_open               = ql3xxx_open,
3739         .ndo_start_xmit         = ql3xxx_send,
3740         .ndo_stop               = ql3xxx_close,
3741         .ndo_validate_addr      = eth_validate_addr,
3742         .ndo_set_mac_address    = ql3xxx_set_mac_address,
3743         .ndo_tx_timeout         = ql3xxx_tx_timeout,
3744 };
3745
3746 static int ql3xxx_probe(struct pci_dev *pdev,
3747                         const struct pci_device_id *pci_entry)
3748 {
3749         struct net_device *ndev = NULL;
3750         struct ql3_adapter *qdev = NULL;
3751         static int cards_found;
3752         int pci_using_dac, err;
3753
3754         err = pci_enable_device(pdev);
3755         if (err) {
3756                 pr_err("%s cannot enable PCI device\n", pci_name(pdev));
3757                 goto err_out;
3758         }
3759
3760         err = pci_request_regions(pdev, DRV_NAME);
3761         if (err) {
3762                 pr_err("%s cannot obtain PCI resources\n", pci_name(pdev));
3763                 goto err_out_disable_pdev;
3764         }
3765
3766         pci_set_master(pdev);
3767
3768         if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)))
3769                 pci_using_dac = 1;
3770         else if (!(err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))))
3771                 pci_using_dac = 0;
3772
3773         if (err) {
3774                 pr_err("%s no usable DMA configuration\n", pci_name(pdev));
3775                 goto err_out_free_regions;
3776         }
3777
3778         ndev = alloc_etherdev(sizeof(struct ql3_adapter));
3779         if (!ndev) {
3780                 err = -ENOMEM;
3781                 goto err_out_free_regions;
3782         }
3783
3784         SET_NETDEV_DEV(ndev, &pdev->dev);
3785
3786         pci_set_drvdata(pdev, ndev);
3787
3788         qdev = netdev_priv(ndev);
3789         qdev->index = cards_found;
3790         qdev->ndev = ndev;
3791         qdev->pdev = pdev;
3792         qdev->device_id = pci_entry->device;
3793         qdev->port_link_state = LS_DOWN;
3794         if (msi)
3795                 qdev->msi = 1;
3796
3797         qdev->msg_enable = netif_msg_init(debug, default_msg);
3798
3799         if (pci_using_dac)
3800                 ndev->features |= NETIF_F_HIGHDMA;
3801         if (qdev->device_id == QL3032_DEVICE_ID)
3802                 ndev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
3803
3804         qdev->mem_map_registers = pci_ioremap_bar(pdev, 1);
3805         if (!qdev->mem_map_registers) {
3806                 pr_err("%s: cannot map device registers\n", pci_name(pdev));
3807                 err = -EIO;
3808                 goto err_out_free_ndev;
3809         }
3810
3811         spin_lock_init(&qdev->adapter_lock);
3812         spin_lock_init(&qdev->hw_lock);
3813
3814         /* Set driver entry points */
3815         ndev->netdev_ops = &ql3xxx_netdev_ops;
3816         ndev->ethtool_ops = &ql3xxx_ethtool_ops;
3817         ndev->watchdog_timeo = 5 * HZ;
3818
3819         netif_napi_add(ndev, &qdev->napi, ql_poll, 64);
3820
3821         ndev->irq = pdev->irq;
3822
3823         /* make sure the EEPROM is good */
3824         if (ql_get_nvram_params(qdev)) {
3825                 pr_alert("%s: Adapter #%d, Invalid NVRAM parameters\n",
3826                          __func__, qdev->index);
3827                 err = -EIO;
3828                 goto err_out_iounmap;
3829         }
3830
3831         ql_set_mac_info(qdev);
3832
3833         /* Validate and set parameters */
3834         if (qdev->mac_index) {
3835                 ndev->mtu = qdev->nvram_data.macCfg_port1.etherMtu_mac ;
3836                 ql_set_mac_addr(ndev, qdev->nvram_data.funcCfg_fn2.macAddress);
3837         } else {
3838                 ndev->mtu = qdev->nvram_data.macCfg_port0.etherMtu_mac ;
3839                 ql_set_mac_addr(ndev, qdev->nvram_data.funcCfg_fn0.macAddress);
3840         }
3841
3842         ndev->tx_queue_len = NUM_REQ_Q_ENTRIES;
3843
3844         /* Record PCI bus information. */
3845         ql_get_board_info(qdev);
3846
3847         /*
3848          * Set the Maximum Memory Read Byte Count value. We do this to handle
3849          * jumbo frames.
3850          */
3851         if (qdev->pci_x)
3852                 pci_write_config_word(pdev, (int)0x4e, (u16) 0x0036);
3853
3854         err = register_netdev(ndev);
3855         if (err) {
3856                 pr_err("%s: cannot register net device\n", pci_name(pdev));
3857                 goto err_out_iounmap;
3858         }
3859
3860         /* we're going to reset, so assume we have no link for now */
3861
3862         netif_carrier_off(ndev);
3863         netif_stop_queue(ndev);
3864
3865         qdev->workqueue = create_singlethread_workqueue(ndev->name);
3866         if (!qdev->workqueue) {
3867                 unregister_netdev(ndev);
3868                 err = -ENOMEM;
3869                 goto err_out_iounmap;
3870         }
3871
3872         INIT_DELAYED_WORK(&qdev->reset_work, ql_reset_work);
3873         INIT_DELAYED_WORK(&qdev->tx_timeout_work, ql_tx_timeout_work);
3874         INIT_DELAYED_WORK(&qdev->link_state_work, ql_link_state_machine_work);
3875
3876         timer_setup(&qdev->adapter_timer, ql3xxx_timer, 0);
3877         qdev->adapter_timer.expires = jiffies + HZ * 2; /* two second delay */
3878
3879         if (!cards_found) {
3880                 pr_alert("%s\n", DRV_STRING);
3881                 pr_alert("Driver name: %s, Version: %s\n",
3882                          DRV_NAME, DRV_VERSION);
3883         }
3884         ql_display_dev_info(ndev);
3885
3886         cards_found++;
3887         return 0;
3888
3889 err_out_iounmap:
3890         iounmap(qdev->mem_map_registers);
3891 err_out_free_ndev:
3892         free_netdev(ndev);
3893 err_out_free_regions:
3894         pci_release_regions(pdev);
3895 err_out_disable_pdev:
3896         pci_disable_device(pdev);
3897 err_out:
3898         return err;
3899 }
3900
3901 static void ql3xxx_remove(struct pci_dev *pdev)
3902 {
3903         struct net_device *ndev = pci_get_drvdata(pdev);
3904         struct ql3_adapter *qdev = netdev_priv(ndev);
3905
3906         unregister_netdev(ndev);
3907
3908         ql_disable_interrupts(qdev);
3909
3910         if (qdev->workqueue) {
3911                 cancel_delayed_work(&qdev->reset_work);
3912                 cancel_delayed_work(&qdev->tx_timeout_work);
3913                 destroy_workqueue(qdev->workqueue);
3914                 qdev->workqueue = NULL;
3915         }
3916
3917         iounmap(qdev->mem_map_registers);
3918         pci_release_regions(pdev);
3919         free_netdev(ndev);
3920 }
3921
3922 static struct pci_driver ql3xxx_driver = {
3923
3924         .name = DRV_NAME,
3925         .id_table = ql3xxx_pci_tbl,
3926         .probe = ql3xxx_probe,
3927         .remove = ql3xxx_remove,
3928 };
3929
3930 module_pci_driver(ql3xxx_driver);