drivers/net/atlx/atl1.c

   1 /*
   2  * Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved.
   3  * Copyright(c) 2006 - 2007 Chris Snook <csnook@redhat.com>
   4  * Copyright(c) 2006 Jay Cliburn <jcliburn@gmail.com>
   5  *
   6  * Derived from Intel e1000 driver
   7  * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License as published by the Free
  11  * Software Foundation; either version 2 of the License, or (at your option)
  12  * any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful, but WITHOUT
  15  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  17  * more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along with
  20  * this program; if not, write to the Free Software Foundation, Inc., 59
  21  * Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  22  *
  23  * The full GNU General Public License is included in this distribution in the
  24  * file called COPYING.
  25  *
  26  * Contact Information:
  27  * Xiong Huang <xiong_huang@attansic.com>
  28  * Attansic Technology Corp. 3F 147, Xianzheng 9th Road, Zhubei,
  29  * Xinzhu  302, TAIWAN, REPUBLIC OF CHINA
  30  *
  31  * Chris Snook <csnook@redhat.com>
  32  * Jay Cliburn <jcliburn@gmail.com>
  33  *
  34  * This version is adapted from the Attansic reference driver for
  35  * inclusion in the Linux kernel.  It is currently under heavy development.
  36  * A very incomplete list of things that need to be dealt with:
  37  *
  38  * TODO:
  39  * Wake on LAN.
  40  * Add more ethtool functions.
  41  * Fix abstruse irq enable/disable condition described here:
  42  *      http://marc.theaimsgroup.com/?l=linux-netdev&m=116398508500553&w=2
  43  *
  44  * NEEDS TESTING:
  45  * VLAN
  46  * multicast
  47  * promiscuous mode
  48  * interrupt coalescing
  49  * SMP torture testing
  50  */
  51
  52 #include <asm/atomic.h>
  53 #include <asm/byteorder.h>
  54
  55 #include <linux/compiler.h>
  56 #include <linux/crc32.h>
  57 #include <linux/delay.h>
  58 #include <linux/dma-mapping.h>
  59 #include <linux/etherdevice.h>
  60 #include <linux/hardirq.h>
  61 #include <linux/if_ether.h>
  62 #include <linux/if_vlan.h>
  63 #include <linux/in.h>
  64 #include <linux/interrupt.h>
  65 #include <linux/ip.h>
  66 #include <linux/irqflags.h>
  67 #include <linux/irqreturn.h>
  68 #include <linux/jiffies.h>
  69 #include <linux/mii.h>
  70 #include <linux/module.h>
  71 #include <linux/moduleparam.h>
  72 #include <linux/net.h>
  73 #include <linux/netdevice.h>
  74 #include <linux/pci.h>
  75 #include <linux/pci_ids.h>
  76 #include <linux/pm.h>
  77 #include <linux/skbuff.h>
  78 #include <linux/slab.h>
  79 #include <linux/spinlock.h>
  80 #include <linux/string.h>
  81 #include <linux/tcp.h>
  82 #include <linux/timer.h>
  83 #include <linux/types.h>
  84 #include <linux/workqueue.h>
  85
  86 #include <net/checksum.h>
  87
  88 #include "atl1.h"
  89
  90 /* Temporary hack for merging atl1 and atl2 */
  91 #include "atlx.c"
  92
  93 /*
  94  * This is the only thing that needs to be changed to adjust the
  95  * maximum number of ports that the driver can manage.
  96  */
  97 #define ATL1_MAX_NIC 4
  98
  99 #define OPTION_UNSET    -1
 100 #define OPTION_DISABLED 0
 101 #define OPTION_ENABLED  1
 102
 103 #define ATL1_PARAM_INIT { [0 ... ATL1_MAX_NIC] = OPTION_UNSET }
 104
 105 /*
 106  * Interrupt Moderate Timer in units of 2 us
 107  *
 108  * Valid Range: 10-65535
 109  *
 110  * Default Value: 100 (200us)
 111  */
 112 static int __devinitdata int_mod_timer[ATL1_MAX_NIC+1] = ATL1_PARAM_INIT;
 113 static int num_int_mod_timer;
 114 module_param_array_named(int_mod_timer, int_mod_timer, int,
 115         &num_int_mod_timer, 0);
 116 MODULE_PARM_DESC(int_mod_timer, "Interrupt moderator timer");
 117
 118 #define DEFAULT_INT_MOD_CNT     100     /* 200us */
 119 #define MAX_INT_MOD_CNT         65000
 120 #define MIN_INT_MOD_CNT         50
 121
 122 struct atl1_option {
 123         enum { enable_option, range_option, list_option } type;
 124         char *name;
 125         char *err;
 126         int def;
 127         union {
 128                 struct {        /* range_option info */
 129                         int min;
 130                         int max;
 131                 } r;
 132                 struct {        /* list_option info */
 133                         int nr;
 134                         struct atl1_opt_list {
 135                                 int i;
 136                                 char *str;
 137                         } *p;
 138                 } l;
 139         } arg;
 140 };
 141
 142 static int __devinit atl1_validate_option(int *value, struct atl1_option *opt,
 143         struct pci_dev *pdev)
 144 {
 145         if (*value == OPTION_UNSET) {
 146                 *value = opt->def;
 147                 return 0;
 148         }
 149
 150         switch (opt->type) {
 151         case enable_option:
 152                 switch (*value) {
 153                 case OPTION_ENABLED:
 154                         dev_info(&pdev->dev, "%s enabled\n", opt->name);
 155                         return 0;
 156                 case OPTION_DISABLED:
 157                         dev_info(&pdev->dev, "%s disabled\n", opt->name);
 158                         return 0;
 159                 }
 160                 break;
 161         case range_option:
 162                 if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
 163                         dev_info(&pdev->dev, "%s set to %i\n", opt->name,
 164                                 *value);
 165                         return 0;
 166                 }
 167                 break;
 168         case list_option:{
 169                         int i;
 170                         struct atl1_opt_list *ent;
 171
 172                         for (i = 0; i < opt->arg.l.nr; i++) {
 173                                 ent = &opt->arg.l.p[i];
 174                                 if (*value == ent->i) {
 175                                         if (ent->str[0] != '\0')
 176                                                 dev_info(&pdev->dev, "%s\n",
 177                                                         ent->str);
 178                                         return 0;
 179                                 }
 180                         }
 181                 }
 182                 break;
 183
 184         default:
 185                 break;
 186         }
 187
 188         dev_info(&pdev->dev, "invalid %s specified (%i) %s\n",
 189                 opt->name, *value, opt->err);
 190         *value = opt->def;
 191         return -1;
 192 }
 193
 194 /*
 195  * atl1_check_options - Range Checking for Command Line Parameters
 196  * @adapter: board private structure
 197  *
 198  * This routine checks all command line parameters for valid user
 199  * input.  If an invalid value is given, or if no user specified
 200  * value exists, a default value is used.  The final value is stored
 201  * in a variable in the adapter structure.
 202  */
 203 void __devinit atl1_check_options(struct atl1_adapter *adapter)
 204 {
 205         struct pci_dev *pdev = adapter->pdev;
 206         int bd = adapter->bd_number;
 207         if (bd >= ATL1_MAX_NIC) {
 208                 dev_notice(&pdev->dev, "no configuration for board#%i\n", bd);
 209                 dev_notice(&pdev->dev, "using defaults for all values\n");
 210         }
 211         {                       /* Interrupt Moderate Timer */
 212                 struct atl1_option opt = {
 213                         .type = range_option,
 214                         .name = "Interrupt Moderator Timer",
 215                         .err = "using default of "
 216                                 __MODULE_STRING(DEFAULT_INT_MOD_CNT),
 217                         .def = DEFAULT_INT_MOD_CNT,
 218                         .arg = {.r = {.min = MIN_INT_MOD_CNT,
 219                                         .max = MAX_INT_MOD_CNT} }
 220                 };
 221                 int val;
 222                 if (num_int_mod_timer > bd) {
 223                         val = int_mod_timer[bd];
 224                         atl1_validate_option(&val, &opt, pdev);
 225                         adapter->imt = (u16) val;
 226                 } else
 227                         adapter->imt = (u16) (opt.def);
 228         }
 229 }
 230
 231 /*
 232  * atl1_pci_tbl - PCI Device ID Table
 233  */
 234 static const struct pci_device_id atl1_pci_tbl[] = {
 235         {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1)},
 236         /* required last entry */
 237         {0,}
 238 };
 239 MODULE_DEVICE_TABLE(pci, atl1_pci_tbl);
 240
 241 static const u32 atl1_default_msg = NETIF_MSG_DRV | NETIF_MSG_PROBE |
 242         NETIF_MSG_LINK | NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP;
 243
 244 static int debug = -1;
 245 module_param(debug, int, 0);
 246 MODULE_PARM_DESC(debug, "Message level (0=none,...,16=all)");
 247
 248 /*
 249  * Reset the transmit and receive units; mask and clear all interrupts.
 250  * hw - Struct containing variables accessed by shared code
 251  * return : 0  or  idle status (if error)
 252  */
 253 static s32 atl1_reset_hw(struct atl1_hw *hw)
 254 {
 255         struct pci_dev *pdev = hw->back->pdev;
 256         struct atl1_adapter *adapter = hw->back;
 257         u32 icr;
 258         int i;
 259
 260         /*
 261          * Clear Interrupt mask to stop board from generating
 262          * interrupts & Clear any pending interrupt events
 263          */
 264         /*
 265          * iowrite32(0, hw->hw_addr + REG_IMR);
 266          * iowrite32(0xffffffff, hw->hw_addr + REG_ISR);
 267          */
 268
 269         /*
 270          * Issue Soft Reset to the MAC.  This will reset the chip's
 271          * transmit, receive, DMA.  It will not effect
 272          * the current PCI configuration.  The global reset bit is self-
 273          * clearing, and should clear within a microsecond.
 274          */
 275         iowrite32(MASTER_CTRL_SOFT_RST, hw->hw_addr + REG_MASTER_CTRL);
 276         ioread32(hw->hw_addr + REG_MASTER_CTRL);
 277
 278         iowrite16(1, hw->hw_addr + REG_PHY_ENABLE);
 279         ioread16(hw->hw_addr + REG_PHY_ENABLE);
 280
 281         /* delay about 1ms */
 282         msleep(1);
 283
 284         /* Wait at least 10ms for All module to be Idle */
 285         for (i = 0; i < 10; i++) {
 286                 icr = ioread32(hw->hw_addr + REG_IDLE_STATUS);
 287                 if (!icr)
 288                         break;
 289                 /* delay 1 ms */
 290                 msleep(1);
 291                 /* FIXME: still the right way to do this? */
 292                 cpu_relax();
 293         }
 294
 295         if (icr) {
 296                 if (netif_msg_hw(adapter))
 297                         dev_dbg(&pdev->dev, "ICR = 0x%x\n", icr);
 298                 return icr;
 299         }
 300
 301         return 0;
 302 }
 303
 304 /* function about EEPROM
 305  *
 306  * check_eeprom_exist
 307  * return 0 if eeprom exist
 308  */
 309 static int atl1_check_eeprom_exist(struct atl1_hw *hw)
 310 {
 311         u32 value;
 312         value = ioread32(hw->hw_addr + REG_SPI_FLASH_CTRL);
 313         if (value & SPI_FLASH_CTRL_EN_VPD) {
 314                 value &= ~SPI_FLASH_CTRL_EN_VPD;
 315                 iowrite32(value, hw->hw_addr + REG_SPI_FLASH_CTRL);
 316         }
 317
 318         value = ioread16(hw->hw_addr + REG_PCIE_CAP_LIST);
 319         return ((value & 0xFF00) == 0x6C00) ? 0 : 1;
 320 }
 321
 322 static bool atl1_read_eeprom(struct atl1_hw *hw, u32 offset, u32 *p_value)
 323 {
 324         int i;
 325         u32 control;
 326
 327         if (offset & 3)
 328                 /* address do not align */
 329                 return false;
 330
 331         iowrite32(0, hw->hw_addr + REG_VPD_DATA);
 332         control = (offset & VPD_CAP_VPD_ADDR_MASK) << VPD_CAP_VPD_ADDR_SHIFT;
 333         iowrite32(control, hw->hw_addr + REG_VPD_CAP);
 334         ioread32(hw->hw_addr + REG_VPD_CAP);
 335
 336         for (i = 0; i < 10; i++) {
 337                 msleep(2);
 338                 control = ioread32(hw->hw_addr + REG_VPD_CAP);
 339                 if (control & VPD_CAP_VPD_FLAG)
 340                         break;
 341         }
 342         if (control & VPD_CAP_VPD_FLAG) {
 343                 *p_value = ioread32(hw->hw_addr + REG_VPD_DATA);
 344                 return true;
 345         }
 346         /* timeout */
 347         return false;
 348 }
 349
 350 /*
 351  * Reads the value from a PHY register
 352  * hw - Struct containing variables accessed by shared code
 353  * reg_addr - address of the PHY register to read
 354  */
 355 s32 atl1_read_phy_reg(struct atl1_hw *hw, u16 reg_addr, u16 *phy_data)
 356 {
 357         u32 val;
 358         int i;
 359
 360         val = ((u32) (reg_addr & MDIO_REG_ADDR_MASK)) << MDIO_REG_ADDR_SHIFT |
 361                 MDIO_START | MDIO_SUP_PREAMBLE | MDIO_RW | MDIO_CLK_25_4 <<
 362                 MDIO_CLK_SEL_SHIFT;
 363         iowrite32(val, hw->hw_addr + REG_MDIO_CTRL);
 364         ioread32(hw->hw_addr + REG_MDIO_CTRL);
 365
 366         for (i = 0; i < MDIO_WAIT_TIMES; i++) {
 367                 udelay(2);
 368                 val = ioread32(hw->hw_addr + REG_MDIO_CTRL);
 369                 if (!(val & (MDIO_START | MDIO_BUSY)))
 370                         break;
 371         }
 372         if (!(val & (MDIO_START | MDIO_BUSY))) {
 373                 *phy_data = (u16) val;
 374                 return 0;
 375         }
 376         return ATLX_ERR_PHY;
 377 }
 378
 379 #define CUSTOM_SPI_CS_SETUP     2
 380 #define CUSTOM_SPI_CLK_HI       2
 381 #define CUSTOM_SPI_CLK_LO       2
 382 #define CUSTOM_SPI_CS_HOLD      2
 383 #define CUSTOM_SPI_CS_HI        3
 384
 385 static bool atl1_spi_read(struct atl1_hw *hw, u32 addr, u32 *buf)
 386 {
 387         int i;
 388         u32 value;
 389
 390         iowrite32(0, hw->hw_addr + REG_SPI_DATA);
 391         iowrite32(addr, hw->hw_addr + REG_SPI_ADDR);
 392
 393         value = SPI_FLASH_CTRL_WAIT_READY |
 394             (CUSTOM_SPI_CS_SETUP & SPI_FLASH_CTRL_CS_SETUP_MASK) <<
 395             SPI_FLASH_CTRL_CS_SETUP_SHIFT | (CUSTOM_SPI_CLK_HI &
 396                                              SPI_FLASH_CTRL_CLK_HI_MASK) <<
 397             SPI_FLASH_CTRL_CLK_HI_SHIFT | (CUSTOM_SPI_CLK_LO &
 398                                            SPI_FLASH_CTRL_CLK_LO_MASK) <<
 399             SPI_FLASH_CTRL_CLK_LO_SHIFT | (CUSTOM_SPI_CS_HOLD &
 400                                            SPI_FLASH_CTRL_CS_HOLD_MASK) <<
 401             SPI_FLASH_CTRL_CS_HOLD_SHIFT | (CUSTOM_SPI_CS_HI &
 402                                             SPI_FLASH_CTRL_CS_HI_MASK) <<
 403             SPI_FLASH_CTRL_CS_HI_SHIFT | (1 & SPI_FLASH_CTRL_INS_MASK) <<
 404             SPI_FLASH_CTRL_INS_SHIFT;
 405
 406         iowrite32(value, hw->hw_addr + REG_SPI_FLASH_CTRL);
 407
 408         value |= SPI_FLASH_CTRL_START;
 409         iowrite32(value, hw->hw_addr + REG_SPI_FLASH_CTRL);
 410         ioread32(hw->hw_addr + REG_SPI_FLASH_CTRL);
 411
 412         for (i = 0; i < 10; i++) {
 413                 msleep(1);
 414                 value = ioread32(hw->hw_addr + REG_SPI_FLASH_CTRL);
 415                 if (!(value & SPI_FLASH_CTRL_START))
 416                         break;
 417         }
 418
 419         if (value & SPI_FLASH_CTRL_START)
 420                 return false;
 421
 422         *buf = ioread32(hw->hw_addr + REG_SPI_DATA);
 423
 424         return true;
 425 }
 426
 427 /*
 428  * get_permanent_address
 429  * return 0 if get valid mac address,
 430  */
 431 static int atl1_get_permanent_address(struct atl1_hw *hw)
 432 {
 433         u32 addr[2];
 434         u32 i, control;
 435         u16 reg;
 436         u8 eth_addr[ETH_ALEN];
 437         bool key_valid;
 438
 439         if (is_valid_ether_addr(hw->perm_mac_addr))
 440                 return 0;
 441
 442         /* init */
 443         addr[0] = addr[1] = 0;
 444
 445         if (!atl1_check_eeprom_exist(hw)) {
 446                 reg = 0;
 447                 key_valid = false;
 448                 /* Read out all EEPROM content */
 449                 i = 0;
 450                 while (1) {
 451                         if (atl1_read_eeprom(hw, i + 0x100, &control)) {
 452                                 if (key_valid) {
 453                                         if (reg == REG_MAC_STA_ADDR)
 454                                                 addr[0] = control;
 455                                         else if (reg == (REG_MAC_STA_ADDR + 4))
 456                                                 addr[1] = control;
 457                                         key_valid = false;
 458                                 } else if ((control & 0xff) == 0x5A) {
 459                                         key_valid = true;
 460                                         reg = (u16) (control >> 16);
 461                                 } else
 462                                         break;
 463                         } else
 464                                 /* read error */
 465                                 break;
 466                         i += 4;
 467                 }
 468
 469                 *(u32 *) &eth_addr[2] = swab32(addr[0]);
 470                 *(u16 *) &eth_addr[0] = swab16(*(u16 *) &addr[1]);
 471                 if (is_valid_ether_addr(eth_addr)) {
 472                         memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN);
 473                         return 0;
 474                 }
 475                 return 1;
 476         }
 477
 478         /* see if SPI FLAGS exist ? */
 479         addr[0] = addr[1] = 0;
 480         reg = 0;
 481         key_valid = false;
 482         i = 0;
 483         while (1) {
 484                 if (atl1_spi_read(hw, i + 0x1f000, &control)) {
 485                         if (key_valid) {
 486                                 if (reg == REG_MAC_STA_ADDR)
 487                                         addr[0] = control;
 488                                 else if (reg == (REG_MAC_STA_ADDR + 4))
 489                                         addr[1] = control;
 490                                 key_valid = false;
 491                         } else if ((control & 0xff) == 0x5A) {
 492                                 key_valid = true;
 493                                 reg = (u16) (control >> 16);
 494                         } else
 495                                 /* data end */
 496                                 break;
 497                 } else
 498                         /* read error */
 499                         break;
 500                 i += 4;
 501         }
 502
 503         *(u32 *) &eth_addr[2] = swab32(addr[0]);
 504         *(u16 *) &eth_addr[0] = swab16(*(u16 *) &addr[1]);
 505         if (is_valid_ether_addr(eth_addr)) {
 506                 memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN);
 507                 return 0;
 508         }
 509
 510         /*
 511          * On some motherboards, the MAC address is written by the
 512          * BIOS directly to the MAC register during POST, and is
 513          * not stored in eeprom.  If all else thus far has failed
 514          * to fetch the permanent MAC address, try reading it directly.
 515          */
 516         addr[0] = ioread32(hw->hw_addr + REG_MAC_STA_ADDR);
 517         addr[1] = ioread16(hw->hw_addr + (REG_MAC_STA_ADDR + 4));
 518         *(u32 *) &eth_addr[2] = swab32(addr[0]);
 519         *(u16 *) &eth_addr[0] = swab16(*(u16 *) &addr[1]);
 520         if (is_valid_ether_addr(eth_addr)) {
 521                 memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN);
 522                 return 0;
 523         }
 524
 525         return 1;
 526 }
 527
 528 /*
 529  * Reads the adapter's MAC address from the EEPROM
 530  * hw - Struct containing variables accessed by shared code
 531  */
 532 s32 atl1_read_mac_addr(struct atl1_hw *hw)
 533 {
 534         u16 i;
 535
 536         if (atl1_get_permanent_address(hw))
 537                 random_ether_addr(hw->perm_mac_addr);
 538
 539         for (i = 0; i < ETH_ALEN; i++)
 540                 hw->mac_addr[i] = hw->perm_mac_addr[i];
 541         return 0;
 542 }
 543
 544 /*
 545  * Hashes an address to determine its location in the multicast table
 546  * hw - Struct containing variables accessed by shared code
 547  * mc_addr - the multicast address to hash
 548  *
 549  * atl1_hash_mc_addr
 550  *  purpose
 551  *      set hash value for a multicast address
 552  *      hash calcu processing :
 553  *          1. calcu 32bit CRC for multicast address
 554  *          2. reverse crc with MSB to LSB
 555  */
 556 u32 atl1_hash_mc_addr(struct atl1_hw *hw, u8 *mc_addr)
 557 {
 558         u32 crc32, value = 0;
 559         int i;
 560
 561         crc32 = ether_crc_le(6, mc_addr);
 562         for (i = 0; i < 32; i++)
 563                 value |= (((crc32 >> i) & 1) << (31 - i));
 564
 565         return value;
 566 }
 567
 568 /*
 569  * Sets the bit in the multicast table corresponding to the hash value.
 570  * hw - Struct containing variables accessed by shared code
 571  * hash_value - Multicast address hash value
 572  */
 573 void atl1_hash_set(struct atl1_hw *hw, u32 hash_value)
 574 {
 575         u32 hash_bit, hash_reg;
 576         u32 mta;
 577
 578         /*
 579          * The HASH Table  is a register array of 2 32-bit registers.
 580          * It is treated like an array of 64 bits.  We want to set
 581          * bit BitArray[hash_value]. So we figure out what register
 582          * the bit is in, read it, OR in the new bit, then write
 583          * back the new value.  The register is determined by the
 584          * upper 7 bits of the hash value and the bit within that
 585          * register are determined by the lower 5 bits of the value.
 586          */
 587         hash_reg = (hash_value >> 31) & 0x1;
 588         hash_bit = (hash_value >> 26) & 0x1F;
 589         mta = ioread32((hw->hw_addr + REG_RX_HASH_TABLE) + (hash_reg << 2));
 590         mta |= (1 << hash_bit);
 591         iowrite32(mta, (hw->hw_addr + REG_RX_HASH_TABLE) + (hash_reg << 2));
 592 }
 593
 594 /*
 595  * Writes a value to a PHY register
 596  * hw - Struct containing variables accessed by shared code
 597  * reg_addr - address of the PHY register to write
 598  * data - data to write to the PHY
 599  */
 600 static s32 atl1_write_phy_reg(struct atl1_hw *hw, u32 reg_addr, u16 phy_data)
 601 {
 602         int i;
 603         u32 val;
 604
 605         val = ((u32) (phy_data & MDIO_DATA_MASK)) << MDIO_DATA_SHIFT |
 606             (reg_addr & MDIO_REG_ADDR_MASK) << MDIO_REG_ADDR_SHIFT |
 607             MDIO_SUP_PREAMBLE |
 608             MDIO_START | MDIO_CLK_25_4 << MDIO_CLK_SEL_SHIFT;
 609         iowrite32(val, hw->hw_addr + REG_MDIO_CTRL);
 610         ioread32(hw->hw_addr + REG_MDIO_CTRL);
 611
 612         for (i = 0; i < MDIO_WAIT_TIMES; i++) {
 613                 udelay(2);
 614                 val = ioread32(hw->hw_addr + REG_MDIO_CTRL);
 615                 if (!(val & (MDIO_START | MDIO_BUSY)))
 616                         break;
 617         }
 618
 619         if (!(val & (MDIO_START | MDIO_BUSY)))
 620                 return 0;
 621
 622         return ATLX_ERR_PHY;
 623 }
 624
 625 /*
 626  * Make L001's PHY out of Power Saving State (bug)
 627  * hw - Struct containing variables accessed by shared code
 628  * when power on, L001's PHY always on Power saving State
 629  * (Gigabit Link forbidden)
 630  */
 631 static s32 atl1_phy_leave_power_saving(struct atl1_hw *hw)
 632 {
 633         s32 ret;
 634         ret = atl1_write_phy_reg(hw, 29, 0x0029);
 635         if (ret)
 636                 return ret;
 637         return atl1_write_phy_reg(hw, 30, 0);
 638 }
 639
 640 /*
 641  *TODO: do something or get rid of this
 642  */
 643 #ifdef CONFIG_PM
 644 static s32 atl1_phy_enter_power_saving(struct atl1_hw *hw)
 645 {
 646 /*    s32 ret_val;
 647  *    u16 phy_data;
 648  */
 649
 650 /*
 651     ret_val = atl1_write_phy_reg(hw, ...);
 652     ret_val = atl1_write_phy_reg(hw, ...);
 653     ....
 654 */
 655         return 0;
 656 }
 657 #endif
 658
 659 /*
 660  * Resets the PHY and make all config validate
 661  * hw - Struct containing variables accessed by shared code
 662  *
 663  * Sets bit 15 and 12 of the MII Control regiser (for F001 bug)
 664  */
 665 static s32 atl1_phy_reset(struct atl1_hw *hw)
 666 {
 667         struct pci_dev *pdev = hw->back->pdev;
 668         struct atl1_adapter *adapter = hw->back;
 669         s32 ret_val;
 670         u16 phy_data;
 671
 672         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
 673             hw->media_type == MEDIA_TYPE_1000M_FULL)
 674                 phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN;
 675         else {
 676                 switch (hw->media_type) {
 677                 case MEDIA_TYPE_100M_FULL:
 678                         phy_data =
 679                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
 680                             MII_CR_RESET;
 681                         break;
 682                 case MEDIA_TYPE_100M_HALF:
 683                         phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
 684                         break;
 685                 case MEDIA_TYPE_10M_FULL:
 686                         phy_data =
 687                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
 688                         break;
 689                 default:
 690                         /* MEDIA_TYPE_10M_HALF: */
 691                         phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
 692                         break;
 693                 }
 694         }
 695
 696         ret_val = atl1_write_phy_reg(hw, MII_BMCR, phy_data);
 697         if (ret_val) {
 698                 u32 val;
 699                 int i;
 700                 /* pcie serdes link may be down! */
 701                 if (netif_msg_hw(adapter))
 702                         dev_dbg(&pdev->dev, "pcie phy link down\n");
 703
 704                 for (i = 0; i < 25; i++) {
 705                         msleep(1);
 706                         val = ioread32(hw->hw_addr + REG_MDIO_CTRL);
 707                         if (!(val & (MDIO_START | MDIO_BUSY)))
 708                                 break;
 709                 }
 710
 711                 if ((val & (MDIO_START | MDIO_BUSY)) != 0) {
 712                         if (netif_msg_hw(adapter))
 713                                 dev_warn(&pdev->dev,
 714                                         "pcie link down at least 25ms\n");
 715                         return ret_val;
 716                 }
 717         }
 718         return 0;
 719 }
 720
 721 /*
 722  * Configures PHY autoneg and flow control advertisement settings
 723  * hw - Struct containing variables accessed by shared code
 724  */
 725 static s32 atl1_phy_setup_autoneg_adv(struct atl1_hw *hw)
 726 {
 727         s32 ret_val;
 728         s16 mii_autoneg_adv_reg;
 729         s16 mii_1000t_ctrl_reg;
 730
 731         /* Read the MII Auto-Neg Advertisement Register (Address 4). */
 732         mii_autoneg_adv_reg = MII_AR_DEFAULT_CAP_MASK;
 733
 734         /* Read the MII 1000Base-T Control Register (Address 9). */
 735         mii_1000t_ctrl_reg = MII_ATLX_CR_1000T_DEFAULT_CAP_MASK;
 736
 737         /*
 738          * First we clear all the 10/100 mb speed bits in the Auto-Neg
 739          * Advertisement Register (Address 4) and the 1000 mb speed bits in
 740          * the  1000Base-T Control Register (Address 9).
 741          */
 742         mii_autoneg_adv_reg &= ~MII_AR_SPEED_MASK;
 743         mii_1000t_ctrl_reg &= ~MII_ATLX_CR_1000T_SPEED_MASK;
 744
 745         /*
 746          * Need to parse media_type  and set up
 747          * the appropriate PHY registers.
 748          */
 749         switch (hw->media_type) {
 750         case MEDIA_TYPE_AUTO_SENSOR:
 751                 mii_autoneg_adv_reg |= (MII_AR_10T_HD_CAPS |
 752                                         MII_AR_10T_FD_CAPS |
 753                                         MII_AR_100TX_HD_CAPS |
 754                                         MII_AR_100TX_FD_CAPS);
 755                 mii_1000t_ctrl_reg |= MII_ATLX_CR_1000T_FD_CAPS;
 756                 break;
 757
 758         case MEDIA_TYPE_1000M_FULL:
 759                 mii_1000t_ctrl_reg |= MII_ATLX_CR_1000T_FD_CAPS;
 760                 break;
 761
 762         case MEDIA_TYPE_100M_FULL:
 763                 mii_autoneg_adv_reg |= MII_AR_100TX_FD_CAPS;
 764                 break;
 765
 766         case MEDIA_TYPE_100M_HALF:
 767                 mii_autoneg_adv_reg |= MII_AR_100TX_HD_CAPS;
 768                 break;
 769
 770         case MEDIA_TYPE_10M_FULL:
 771                 mii_autoneg_adv_reg |= MII_AR_10T_FD_CAPS;
 772                 break;
 773
 774         default:
 775                 mii_autoneg_adv_reg |= MII_AR_10T_HD_CAPS;
 776                 break;
 777         }
 778
 779         /* flow control fixed to enable all */
 780         mii_autoneg_adv_reg |= (MII_AR_ASM_DIR | MII_AR_PAUSE);
 781
 782         hw->mii_autoneg_adv_reg = mii_autoneg_adv_reg;
 783         hw->mii_1000t_ctrl_reg = mii_1000t_ctrl_reg;
 784
 785         ret_val = atl1_write_phy_reg(hw, MII_ADVERTISE, mii_autoneg_adv_reg);
 786         if (ret_val)
 787                 return ret_val;
 788
 789         ret_val = atl1_write_phy_reg(hw, MII_ATLX_CR, mii_1000t_ctrl_reg);
 790         if (ret_val)
 791                 return ret_val;
 792
 793         return 0;
 794 }
 795
 796 /*
 797  * Configures link settings.
 798  * hw - Struct containing variables accessed by shared code
 799  * Assumes the hardware has previously been reset and the
 800  * transmitter and receiver are not enabled.
 801  */
 802 static s32 atl1_setup_link(struct atl1_hw *hw)
 803 {
 804         struct pci_dev *pdev = hw->back->pdev;
 805         struct atl1_adapter *adapter = hw->back;
 806         s32 ret_val;
 807
 808         /*
 809          * Options:
 810          *  PHY will advertise value(s) parsed from
 811          *  autoneg_advertised and fc
 812          *  no matter what autoneg is , We will not wait link result.
 813          */
 814         ret_val = atl1_phy_setup_autoneg_adv(hw);
 815         if (ret_val) {
 816                 if (netif_msg_link(adapter))
 817                         dev_dbg(&pdev->dev,
 818                                 "error setting up autonegotiation\n");
 819                 return ret_val;
 820         }
 821         /* SW.Reset , En-Auto-Neg if needed */
 822         ret_val = atl1_phy_reset(hw);
 823         if (ret_val) {
 824                 if (netif_msg_link(adapter))
 825                         dev_dbg(&pdev->dev, "error resetting phy\n");
 826                 return ret_val;
 827         }
 828         hw->phy_configured = true;
 829         return ret_val;
 830 }
 831
 832 static void atl1_init_flash_opcode(struct atl1_hw *hw)
 833 {
 834         if (hw->flash_vendor >= ARRAY_SIZE(flash_table))
 835                 /* Atmel */
 836                 hw->flash_vendor = 0;
 837
 838         /* Init OP table */
 839         iowrite8(flash_table[hw->flash_vendor].cmd_program,
 840                 hw->hw_addr + REG_SPI_FLASH_OP_PROGRAM);
 841         iowrite8(flash_table[hw->flash_vendor].cmd_sector_erase,
 842                 hw->hw_addr + REG_SPI_FLASH_OP_SC_ERASE);
 843         iowrite8(flash_table[hw->flash_vendor].cmd_chip_erase,
 844                 hw->hw_addr + REG_SPI_FLASH_OP_CHIP_ERASE);
 845         iowrite8(flash_table[hw->flash_vendor].cmd_rdid,
 846                 hw->hw_addr + REG_SPI_FLASH_OP_RDID);
 847         iowrite8(flash_table[hw->flash_vendor].cmd_wren,
 848                 hw->hw_addr + REG_SPI_FLASH_OP_WREN);
 849         iowrite8(flash_table[hw->flash_vendor].cmd_rdsr,
 850                 hw->hw_addr + REG_SPI_FLASH_OP_RDSR);
 851         iowrite8(flash_table[hw->flash_vendor].cmd_wrsr,
 852                 hw->hw_addr + REG_SPI_FLASH_OP_WRSR);
 853         iowrite8(flash_table[hw->flash_vendor].cmd_read,
 854                 hw->hw_addr + REG_SPI_FLASH_OP_READ);
 855 }
 856
 857 /*
 858  * Performs basic configuration of the adapter.
 859  * hw - Struct containing variables accessed by shared code
 860  * Assumes that the controller has previously been reset and is in a
 861  * post-reset uninitialized state. Initializes multicast table,
 862  * and  Calls routines to setup link
 863  * Leaves the transmit and receive units disabled and uninitialized.
 864  */
 865 static s32 atl1_init_hw(struct atl1_hw *hw)
 866 {
 867         u32 ret_val = 0;
 868
 869         /* Zero out the Multicast HASH table */
 870         iowrite32(0, hw->hw_addr + REG_RX_HASH_TABLE);
 871         /* clear the old settings from the multicast hash table */
 872         iowrite32(0, (hw->hw_addr + REG_RX_HASH_TABLE) + (1 << 2));
 873
 874         atl1_init_flash_opcode(hw);
 875
 876         if (!hw->phy_configured) {
 877                 /* enable GPHY LinkChange Interrrupt */
 878                 ret_val = atl1_write_phy_reg(hw, 18, 0xC00);
 879                 if (ret_val)
 880                         return ret_val;
 881                 /* make PHY out of power-saving state */
 882                 ret_val = atl1_phy_leave_power_saving(hw);
 883                 if (ret_val)
 884                         return ret_val;
 885                 /* Call a subroutine to configure the link */
 886                 ret_val = atl1_setup_link(hw);
 887         }
 888         return ret_val;
 889 }
 890
 891 /*
 892  * Detects the current speed and duplex settings of the hardware.
 893  * hw - Struct containing variables accessed by shared code
 894  * speed - Speed of the connection
 895  * duplex - Duplex setting of the connection
 896  */
 897 static s32 atl1_get_speed_and_duplex(struct atl1_hw *hw, u16 *speed, u16 *duplex)
 898 {
 899         struct pci_dev *pdev = hw->back->pdev;
 900         struct atl1_adapter *adapter = hw->back;
 901         s32 ret_val;
 902         u16 phy_data;
 903
 904         /* ; --- Read   PHY Specific Status Register (17) */
 905         ret_val = atl1_read_phy_reg(hw, MII_ATLX_PSSR, &phy_data);
 906         if (ret_val)
 907                 return ret_val;
 908
 909         if (!(phy_data & MII_ATLX_PSSR_SPD_DPLX_RESOLVED))
 910                 return ATLX_ERR_PHY_RES;
 911
 912         switch (phy_data & MII_ATLX_PSSR_SPEED) {
 913         case MII_ATLX_PSSR_1000MBS:
 914                 *speed = SPEED_1000;
 915                 break;
 916         case MII_ATLX_PSSR_100MBS:
 917                 *speed = SPEED_100;
 918                 break;
 919         case MII_ATLX_PSSR_10MBS:
 920                 *speed = SPEED_10;
 921                 break;
 922         default:
 923                 if (netif_msg_hw(adapter))
 924                         dev_dbg(&pdev->dev, "error getting speed\n");
 925                 return ATLX_ERR_PHY_SPEED;
 926                 break;
 927         }
 928         if (phy_data & MII_ATLX_PSSR_DPLX)
 929                 *duplex = FULL_DUPLEX;
 930         else
 931                 *duplex = HALF_DUPLEX;
 932
 933         return 0;
 934 }
 935
 936 void atl1_set_mac_addr(struct atl1_hw *hw)
 937 {
 938         u32 value;
 939         /*
 940          * 00-0B-6A-F6-00-DC
 941          * 0:  6AF600DC   1: 000B
 942          * low dword
 943          */
 944         value = (((u32) hw->mac_addr[2]) << 24) |
 945             (((u32) hw->mac_addr[3]) << 16) |
 946             (((u32) hw->mac_addr[4]) << 8) | (((u32) hw->mac_addr[5]));
 947         iowrite32(value, hw->hw_addr + REG_MAC_STA_ADDR);
 948         /* high dword */
 949         value = (((u32) hw->mac_addr[0]) << 8) | (((u32) hw->mac_addr[1]));
 950         iowrite32(value, (hw->hw_addr + REG_MAC_STA_ADDR) + (1 << 2));
 951 }
 952
 953 /*
 954  * atl1_sw_init - Initialize general software structures (struct atl1_adapter)
 955  * @adapter: board private structure to initialize
 956  *
 957  * atl1_sw_init initializes the Adapter private data structure.
 958  * Fields are initialized based on PCI device information and
 959  * OS network device settings (MTU size).
 960  */
 961 static int __devinit atl1_sw_init(struct atl1_adapter *adapter)
 962 {
 963         struct atl1_hw *hw = &adapter->hw;
 964         struct net_device *netdev = adapter->netdev;
 965
 966         hw->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
 967         hw->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
 968
 969         adapter->wol = 0;
 970         adapter->rx_buffer_len = (hw->max_frame_size + 7) & ~7;
 971         adapter->ict = 50000;           /* 100ms */
 972         adapter->link_speed = SPEED_0;  /* hardware init */
 973         adapter->link_duplex = FULL_DUPLEX;
 974
 975         hw->phy_configured = false;
 976         hw->preamble_len = 7;
 977         hw->ipgt = 0x60;
 978         hw->min_ifg = 0x50;
 979         hw->ipgr1 = 0x40;
 980         hw->ipgr2 = 0x60;
 981         hw->max_retry = 0xf;
 982         hw->lcol = 0x37;
 983         hw->jam_ipg = 7;
 984         hw->rfd_burst = 8;
 985         hw->rrd_burst = 8;
 986         hw->rfd_fetch_gap = 1;
 987         hw->rx_jumbo_th = adapter->rx_buffer_len / 8;
 988         hw->rx_jumbo_lkah = 1;
 989         hw->rrd_ret_timer = 16;
 990         hw->tpd_burst = 4;
 991         hw->tpd_fetch_th = 16;
 992         hw->txf_burst = 0x100;
 993         hw->tx_jumbo_task_th = (hw->max_frame_size + 7) >> 3;
 994         hw->tpd_fetch_gap = 1;
 995         hw->rcb_value = atl1_rcb_64;
 996         hw->dma_ord = atl1_dma_ord_enh;
 997         hw->dmar_block = atl1_dma_req_256;
 998         hw->dmaw_block = atl1_dma_req_256;
 999         hw->cmb_rrd = 4;
1000         hw->cmb_tpd = 4;
1001         hw->cmb_rx_timer = 1;   /* about 2us */
1002         hw->cmb_tx_timer = 1;   /* about 2us */
1003         hw->smb_timer = 100000; /* about 200ms */
1004
1005         spin_lock_init(&adapter->lock);
1006         spin_lock_init(&adapter->mb_lock);
1007
1008         return 0;
1009 }
1010
1011 static int mdio_read(struct net_device *netdev, int phy_id, int reg_num)
1012 {
1013         struct atl1_adapter *adapter = netdev_priv(netdev);
1014         u16 result;
1015
1016         atl1_read_phy_reg(&adapter->hw, reg_num & 0x1f, &result);
1017
1018         return result;
1019 }
1020
1021 static void mdio_write(struct net_device *netdev, int phy_id, int reg_num,
1022         int val)
1023 {
1024         struct atl1_adapter *adapter = netdev_priv(netdev);
1025
1026         atl1_write_phy_reg(&adapter->hw, reg_num, val);
1027 }
1028
1029 /*
1030  * atl1_mii_ioctl -
1031  * @netdev:
1032  * @ifreq:
1033  * @cmd:
1034  */
1035 static int atl1_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1036 {
1037         struct atl1_adapter *adapter = netdev_priv(netdev);
1038         unsigned long flags;
1039         int retval;
1040
1041         if (!netif_running(netdev))
1042                 return -EINVAL;
1043
1044         spin_lock_irqsave(&adapter->lock, flags);
1045         retval = generic_mii_ioctl(&adapter->mii, if_mii(ifr), cmd, NULL);
1046         spin_unlock_irqrestore(&adapter->lock, flags);
1047
1048         return retval;
1049 }
1050
1051 /*
1052  * atl1_setup_mem_resources - allocate Tx / RX descriptor resources
1053  * @adapter: board private structure
1054  *
1055  * Return 0 on success, negative on failure
1056  */
1057 static s32 atl1_setup_ring_resources(struct atl1_adapter *adapter)
1058 {
1059         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1060         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1061         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1062         struct atl1_ring_header *ring_header = &adapter->ring_header;
1063         struct pci_dev *pdev = adapter->pdev;
1064         int size;
1065         u8 offset = 0;
1066
1067         size = sizeof(struct atl1_buffer) * (tpd_ring->count + rfd_ring->count);
1068         tpd_ring->buffer_info = kzalloc(size, GFP_KERNEL);
1069         if (unlikely(!tpd_ring->buffer_info)) {
1070                 if (netif_msg_drv(adapter))
1071                         dev_err(&pdev->dev, "kzalloc failed , size = D%d\n",
1072                                 size);
1073                 goto err_nomem;
1074         }
1075         rfd_ring->buffer_info =
1076                 (struct atl1_buffer *)(tpd_ring->buffer_info + tpd_ring->count);
1077
1078         /*
1079          * real ring DMA buffer
1080          * each ring/block may need up to 8 bytes for alignment, hence the
1081          * additional 40 bytes tacked onto the end.
1082          */
1083         ring_header->size = size =
1084                 sizeof(struct tx_packet_desc) * tpd_ring->count
1085                 + sizeof(struct rx_free_desc) * rfd_ring->count
1086                 + sizeof(struct rx_return_desc) * rrd_ring->count
1087                 + sizeof(struct coals_msg_block)
1088                 + sizeof(struct stats_msg_block)
1089                 + 40;
1090
1091         ring_header->desc = pci_alloc_consistent(pdev, ring_header->size,
1092                 &ring_header->dma);
1093         if (unlikely(!ring_header->desc)) {
1094                 if (netif_msg_drv(adapter))
1095                         dev_err(&pdev->dev, "pci_alloc_consistent failed\n");
1096                 goto err_nomem;
1097         }
1098
1099         memset(ring_header->desc, 0, ring_header->size);
1100
1101         /* init TPD ring */
1102         tpd_ring->dma = ring_header->dma;
1103         offset = (tpd_ring->dma & 0x7) ? (8 - (ring_header->dma & 0x7)) : 0;
1104         tpd_ring->dma += offset;
1105         tpd_ring->desc = (u8 *) ring_header->desc + offset;
1106         tpd_ring->size = sizeof(struct tx_packet_desc) * tpd_ring->count;
1107
1108         /* init RFD ring */
1109         rfd_ring->dma = tpd_ring->dma + tpd_ring->size;
1110         offset = (rfd_ring->dma & 0x7) ? (8 - (rfd_ring->dma & 0x7)) : 0;
1111         rfd_ring->dma += offset;
1112         rfd_ring->desc = (u8 *) tpd_ring->desc + (tpd_ring->size + offset);
1113         rfd_ring->size = sizeof(struct rx_free_desc) * rfd_ring->count;
1114
1115
1116         /* init RRD ring */
1117         rrd_ring->dma = rfd_ring->dma + rfd_ring->size;
1118         offset = (rrd_ring->dma & 0x7) ? (8 - (rrd_ring->dma & 0x7)) : 0;
1119         rrd_ring->dma += offset;
1120         rrd_ring->desc = (u8 *) rfd_ring->desc + (rfd_ring->size + offset);
1121         rrd_ring->size = sizeof(struct rx_return_desc) * rrd_ring->count;
1122
1123
1124         /* init CMB */
1125         adapter->cmb.dma = rrd_ring->dma + rrd_ring->size;
1126         offset = (adapter->cmb.dma & 0x7) ? (8 - (adapter->cmb.dma & 0x7)) : 0;
1127         adapter->cmb.dma += offset;
1128         adapter->cmb.cmb = (struct coals_msg_block *)
1129                 ((u8 *) rrd_ring->desc + (rrd_ring->size + offset));
1130
1131         /* init SMB */
1132         adapter->smb.dma = adapter->cmb.dma + sizeof(struct coals_msg_block);
1133         offset = (adapter->smb.dma & 0x7) ? (8 - (adapter->smb.dma & 0x7)) : 0;
1134         adapter->smb.dma += offset;
1135         adapter->smb.smb = (struct stats_msg_block *)
1136                 ((u8 *) adapter->cmb.cmb +
1137                 (sizeof(struct coals_msg_block) + offset));
1138
1139         return 0;
1140
1141 err_nomem:
1142         kfree(tpd_ring->buffer_info);
1143         return -ENOMEM;
1144 }
1145
1146 static void atl1_init_ring_ptrs(struct atl1_adapter *adapter)
1147 {
1148         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1149         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1150         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1151
1152         atomic_set(&tpd_ring->next_to_use, 0);
1153         atomic_set(&tpd_ring->next_to_clean, 0);
1154
1155         rfd_ring->next_to_clean = 0;
1156         atomic_set(&rfd_ring->next_to_use, 0);
1157
1158         rrd_ring->next_to_use = 0;
1159         atomic_set(&rrd_ring->next_to_clean, 0);
1160 }
1161
1162 /*
1163  * atl1_clean_rx_ring - Free RFD Buffers
1164  * @adapter: board private structure
1165  */
1166 static void atl1_clean_rx_ring(struct atl1_adapter *adapter)
1167 {
1168         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1169         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1170         struct atl1_buffer *buffer_info;
1171         struct pci_dev *pdev = adapter->pdev;
1172         unsigned long size;
1173         unsigned int i;
1174
1175         /* Free all the Rx ring sk_buffs */
1176         for (i = 0; i < rfd_ring->count; i++) {
1177                 buffer_info = &rfd_ring->buffer_info[i];
1178                 if (buffer_info->dma) {
1179                         pci_unmap_page(pdev, buffer_info->dma,
1180                                 buffer_info->length, PCI_DMA_FROMDEVICE);
1181                         buffer_info->dma = 0;
1182                 }
1183                 if (buffer_info->skb) {
1184                         dev_kfree_skb(buffer_info->skb);
1185                         buffer_info->skb = NULL;
1186                 }
1187         }
1188
1189         size = sizeof(struct atl1_buffer) * rfd_ring->count;
1190         memset(rfd_ring->buffer_info, 0, size);
1191
1192         /* Zero out the descriptor ring */
1193         memset(rfd_ring->desc, 0, rfd_ring->size);
1194
1195         rfd_ring->next_to_clean = 0;
1196         atomic_set(&rfd_ring->next_to_use, 0);
1197
1198         rrd_ring->next_to_use = 0;
1199         atomic_set(&rrd_ring->next_to_clean, 0);
1200 }
1201
1202 /*
1203  * atl1_clean_tx_ring - Free Tx Buffers
1204  * @adapter: board private structure
1205  */
1206 static void atl1_clean_tx_ring(struct atl1_adapter *adapter)
1207 {
1208         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1209         struct atl1_buffer *buffer_info;
1210         struct pci_dev *pdev = adapter->pdev;
1211         unsigned long size;
1212         unsigned int i;
1213
1214         /* Free all the Tx ring sk_buffs */
1215         for (i = 0; i < tpd_ring->count; i++) {
1216                 buffer_info = &tpd_ring->buffer_info[i];
1217                 if (buffer_info->dma) {
1218                         pci_unmap_page(pdev, buffer_info->dma,
1219                                 buffer_info->length, PCI_DMA_TODEVICE);
1220                         buffer_info->dma = 0;
1221                 }
1222         }
1223
1224         for (i = 0; i < tpd_ring->count; i++) {
1225                 buffer_info = &tpd_ring->buffer_info[i];
1226                 if (buffer_info->skb) {
1227                         dev_kfree_skb_any(buffer_info->skb);
1228                         buffer_info->skb = NULL;
1229                 }
1230         }
1231
1232         size = sizeof(struct atl1_buffer) * tpd_ring->count;
1233         memset(tpd_ring->buffer_info, 0, size);
1234
1235         /* Zero out the descriptor ring */
1236         memset(tpd_ring->desc, 0, tpd_ring->size);
1237
1238         atomic_set(&tpd_ring->next_to_use, 0);
1239         atomic_set(&tpd_ring->next_to_clean, 0);
1240 }
1241
1242 /*
1243  * atl1_free_ring_resources - Free Tx / RX descriptor Resources
1244  * @adapter: board private structure
1245  *
1246  * Free all transmit software resources
1247  */
1248 static void atl1_free_ring_resources(struct atl1_adapter *adapter)
1249 {
1250         struct pci_dev *pdev = adapter->pdev;
1251         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1252         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1253         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1254         struct atl1_ring_header *ring_header = &adapter->ring_header;
1255
1256         atl1_clean_tx_ring(adapter);
1257         atl1_clean_rx_ring(adapter);
1258
1259         kfree(tpd_ring->buffer_info);
1260         pci_free_consistent(pdev, ring_header->size, ring_header->desc,
1261                 ring_header->dma);
1262
1263         tpd_ring->buffer_info = NULL;
1264         tpd_ring->desc = NULL;
1265         tpd_ring->dma = 0;
1266
1267         rfd_ring->buffer_info = NULL;
1268         rfd_ring->desc = NULL;
1269         rfd_ring->dma = 0;
1270
1271         rrd_ring->desc = NULL;
1272         rrd_ring->dma = 0;
1273 }
1274
1275 static void atl1_setup_mac_ctrl(struct atl1_adapter *adapter)
1276 {
1277         u32 value;
1278         struct atl1_hw *hw = &adapter->hw;
1279         struct net_device *netdev = adapter->netdev;
1280         /* Config MAC CTRL Register */
1281         value = MAC_CTRL_TX_EN | MAC_CTRL_RX_EN;
1282         /* duplex */
1283         if (FULL_DUPLEX == adapter->link_duplex)
1284                 value |= MAC_CTRL_DUPLX;
1285         /* speed */
1286         value |= ((u32) ((SPEED_1000 == adapter->link_speed) ?
1287                          MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100) <<
1288                   MAC_CTRL_SPEED_SHIFT);
1289         /* flow control */
1290         value |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW);
1291         /* PAD & CRC */
1292         value |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD);
1293         /* preamble length */
1294         value |= (((u32) adapter->hw.preamble_len
1295                    & MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT);
1296         /* vlan */
1297         if (adapter->vlgrp)
1298                 value |= MAC_CTRL_RMV_VLAN;
1299         /* rx checksum
1300            if (adapter->rx_csum)
1301            value |= MAC_CTRL_RX_CHKSUM_EN;
1302          */
1303         /* filter mode */
1304         value |= MAC_CTRL_BC_EN;
1305         if (netdev->flags & IFF_PROMISC)
1306                 value |= MAC_CTRL_PROMIS_EN;
1307         else if (netdev->flags & IFF_ALLMULTI)
1308                 value |= MAC_CTRL_MC_ALL_EN;
1309         /* value |= MAC_CTRL_LOOPBACK; */
1310         iowrite32(value, hw->hw_addr + REG_MAC_CTRL);
1311 }
1312
1313 static u32 atl1_check_link(struct atl1_adapter *adapter)
1314 {
1315         struct atl1_hw *hw = &adapter->hw;
1316         struct net_device *netdev = adapter->netdev;
1317         u32 ret_val;
1318         u16 speed, duplex, phy_data;
1319         int reconfig = 0;
1320
1321         /* MII_BMSR must read twice */
1322         atl1_read_phy_reg(hw, MII_BMSR, &phy_data);
1323         atl1_read_phy_reg(hw, MII_BMSR, &phy_data);
1324         if (!(phy_data & BMSR_LSTATUS)) {
1325                 /* link down */
1326                 if (netif_carrier_ok(netdev)) {
1327                         /* old link state: Up */
1328                         if (netif_msg_link(adapter))
1329                                 dev_info(&adapter->pdev->dev, "link is down\n");
1330                         adapter->link_speed = SPEED_0;
1331                         netif_carrier_off(netdev);
1332                         netif_stop_queue(netdev);
1333                 }
1334                 return 0;
1335         }
1336
1337         /* Link Up */
1338         ret_val = atl1_get_speed_and_duplex(hw, &speed, &duplex);
1339         if (ret_val)
1340                 return ret_val;
1341
1342         switch (hw->media_type) {
1343         case MEDIA_TYPE_1000M_FULL:
1344                 if (speed != SPEED_1000 || duplex != FULL_DUPLEX)
1345                         reconfig = 1;
1346                 break;
1347         case MEDIA_TYPE_100M_FULL:
1348                 if (speed != SPEED_100 || duplex != FULL_DUPLEX)
1349                         reconfig = 1;
1350                 break;
1351         case MEDIA_TYPE_100M_HALF:
1352                 if (speed != SPEED_100 || duplex != HALF_DUPLEX)
1353                         reconfig = 1;
1354                 break;
1355         case MEDIA_TYPE_10M_FULL:
1356                 if (speed != SPEED_10 || duplex != FULL_DUPLEX)
1357                         reconfig = 1;
1358                 break;
1359         case MEDIA_TYPE_10M_HALF:
1360                 if (speed != SPEED_10 || duplex != HALF_DUPLEX)
1361                         reconfig = 1;
1362                 break;
1363         }
1364
1365         /* link result is our setting */
1366         if (!reconfig) {
1367                 if (adapter->link_speed != speed
1368                     || adapter->link_duplex != duplex) {
1369                         adapter->link_speed = speed;
1370                         adapter->link_duplex = duplex;
1371                         atl1_setup_mac_ctrl(adapter);
1372                         if (netif_msg_link(adapter))
1373                                 dev_info(&adapter->pdev->dev,
1374                                         "%s link is up %d Mbps %s\n",
1375                                         netdev->name, adapter->link_speed,
1376                                         adapter->link_duplex == FULL_DUPLEX ?
1377                                         "full duplex" : "half duplex");
1378                 }
1379                 if (!netif_carrier_ok(netdev)) {
1380                         /* Link down -> Up */
1381                         netif_carrier_on(netdev);
1382                         netif_wake_queue(netdev);
1383                 }
1384                 return 0;
1385         }
1386
1387         /* change original link status */
1388         if (netif_carrier_ok(netdev)) {
1389                 adapter->link_speed = SPEED_0;
1390                 netif_carrier_off(netdev);
1391                 netif_stop_queue(netdev);
1392         }
1393
1394         if (hw->media_type != MEDIA_TYPE_AUTO_SENSOR &&
1395             hw->media_type != MEDIA_TYPE_1000M_FULL) {
1396                 switch (hw->media_type) {
1397                 case MEDIA_TYPE_100M_FULL:
1398                         phy_data = MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
1399                                    MII_CR_RESET;
1400                         break;
1401                 case MEDIA_TYPE_100M_HALF:
1402                         phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
1403                         break;
1404                 case MEDIA_TYPE_10M_FULL:
1405                         phy_data =
1406                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
1407                         break;
1408                 default:
1409                         /* MEDIA_TYPE_10M_HALF: */
1410                         phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
1411                         break;
1412                 }
1413                 atl1_write_phy_reg(hw, MII_BMCR, phy_data);
1414                 return 0;
1415         }
1416
1417         /* auto-neg, insert timer to re-config phy */
1418         if (!adapter->phy_timer_pending) {
1419                 adapter->phy_timer_pending = true;
1420                 mod_timer(&adapter->phy_config_timer, jiffies + 3 * HZ);
1421         }
1422
1423         return 0;
1424 }
1425
1426 static void set_flow_ctrl_old(struct atl1_adapter *adapter)
1427 {
1428         u32 hi, lo, value;
1429
1430         /* RFD Flow Control */
1431         value = adapter->rfd_ring.count;
1432         hi = value / 16;
1433         if (hi < 2)
1434                 hi = 2;
1435         lo = value * 7 / 8;
1436
1437         value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) |
1438                 ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT);
1439         iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RXF_PAUSE_THRESH);
1440
1441         /* RRD Flow Control */
1442         value = adapter->rrd_ring.count;
1443         lo = value / 16;
1444         hi = value * 7 / 8;
1445         if (lo < 2)
1446                 lo = 2;
1447         value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) |
1448                 ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT);
1449         iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RRD_PAUSE_THRESH);
1450 }
1451
1452 static void set_flow_ctrl_new(struct atl1_hw *hw)
1453 {
1454         u32 hi, lo, value;
1455
1456         /* RXF Flow Control */
1457         value = ioread32(hw->hw_addr + REG_SRAM_RXF_LEN);
1458         lo = value / 16;
1459         if (lo < 192)
1460                 lo = 192;
1461         hi = value * 7 / 8;
1462         if (hi < lo)
1463                 hi = lo + 16;
1464         value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) |
1465                 ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT);
1466         iowrite32(value, hw->hw_addr + REG_RXQ_RXF_PAUSE_THRESH);
1467
1468         /* RRD Flow Control */
1469         value = ioread32(hw->hw_addr + REG_SRAM_RRD_LEN);
1470         lo = value / 8;
1471         hi = value * 7 / 8;
1472         if (lo < 2)
1473                 lo = 2;
1474         if (hi < lo)
1475                 hi = lo + 3;
1476         value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) |
1477                 ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT);
1478         iowrite32(value, hw->hw_addr + REG_RXQ_RRD_PAUSE_THRESH);
1479 }
1480
1481 /*
1482  * atl1_configure - Configure Transmit&Receive Unit after Reset
1483  * @adapter: board private structure
1484  *
1485  * Configure the Tx /Rx unit of the MAC after a reset.
1486  */
1487 static u32 atl1_configure(struct atl1_adapter *adapter)
1488 {
1489         struct atl1_hw *hw = &adapter->hw;
1490         u32 value;
1491
1492         /* clear interrupt status */
1493         iowrite32(0xffffffff, adapter->hw.hw_addr + REG_ISR);
1494
1495         /* set MAC Address */
1496         value = (((u32) hw->mac_addr[2]) << 24) |
1497                 (((u32) hw->mac_addr[3]) << 16) |
1498                 (((u32) hw->mac_addr[4]) << 8) |
1499                 (((u32) hw->mac_addr[5]));
1500         iowrite32(value, hw->hw_addr + REG_MAC_STA_ADDR);
1501         value = (((u32) hw->mac_addr[0]) << 8) | (((u32) hw->mac_addr[1]));
1502         iowrite32(value, hw->hw_addr + (REG_MAC_STA_ADDR + 4));
1503
1504         /* tx / rx ring */
1505
1506         /* HI base address */
1507         iowrite32((u32) ((adapter->tpd_ring.dma & 0xffffffff00000000ULL) >> 32),
1508                 hw->hw_addr + REG_DESC_BASE_ADDR_HI);
1509         /* LO base address */
1510         iowrite32((u32) (adapter->rfd_ring.dma & 0x00000000ffffffffULL),
1511                 hw->hw_addr + REG_DESC_RFD_ADDR_LO);
1512         iowrite32((u32) (adapter->rrd_ring.dma & 0x00000000ffffffffULL),
1513                 hw->hw_addr + REG_DESC_RRD_ADDR_LO);
1514         iowrite32((u32) (adapter->tpd_ring.dma & 0x00000000ffffffffULL),
1515                 hw->hw_addr + REG_DESC_TPD_ADDR_LO);
1516         iowrite32((u32) (adapter->cmb.dma & 0x00000000ffffffffULL),
1517                 hw->hw_addr + REG_DESC_CMB_ADDR_LO);
1518         iowrite32((u32) (adapter->smb.dma & 0x00000000ffffffffULL),
1519                 hw->hw_addr + REG_DESC_SMB_ADDR_LO);
1520
1521         /* element count */
1522         value = adapter->rrd_ring.count;
1523         value <<= 16;
1524         value += adapter->rfd_ring.count;
1525         iowrite32(value, hw->hw_addr + REG_DESC_RFD_RRD_RING_SIZE);
1526         iowrite32(adapter->tpd_ring.count, hw->hw_addr +
1527                 REG_DESC_TPD_RING_SIZE);
1528
1529         /* Load Ptr */
1530         iowrite32(1, hw->hw_addr + REG_LOAD_PTR);
1531
1532         /* config Mailbox */
1533         value = ((atomic_read(&adapter->tpd_ring.next_to_use)
1534                   & MB_TPD_PROD_INDX_MASK) << MB_TPD_PROD_INDX_SHIFT) |
1535                 ((atomic_read(&adapter->rrd_ring.next_to_clean)
1536                 & MB_RRD_CONS_INDX_MASK) << MB_RRD_CONS_INDX_SHIFT) |
1537                 ((atomic_read(&adapter->rfd_ring.next_to_use)
1538                 & MB_RFD_PROD_INDX_MASK) << MB_RFD_PROD_INDX_SHIFT);
1539         iowrite32(value, hw->hw_addr + REG_MAILBOX);
1540
1541         /* config IPG/IFG */
1542         value = (((u32) hw->ipgt & MAC_IPG_IFG_IPGT_MASK)
1543                  << MAC_IPG_IFG_IPGT_SHIFT) |
1544                 (((u32) hw->min_ifg & MAC_IPG_IFG_MIFG_MASK)
1545                 << MAC_IPG_IFG_MIFG_SHIFT) |
1546                 (((u32) hw->ipgr1 & MAC_IPG_IFG_IPGR1_MASK)
1547                 << MAC_IPG_IFG_IPGR1_SHIFT) |
1548                 (((u32) hw->ipgr2 & MAC_IPG_IFG_IPGR2_MASK)
1549                 << MAC_IPG_IFG_IPGR2_SHIFT);
1550         iowrite32(value, hw->hw_addr + REG_MAC_IPG_IFG);
1551
1552         /* config  Half-Duplex Control */
1553         value = ((u32) hw->lcol & MAC_HALF_DUPLX_CTRL_LCOL_MASK) |
1554                 (((u32) hw->max_retry & MAC_HALF_DUPLX_CTRL_RETRY_MASK)
1555                 << MAC_HALF_DUPLX_CTRL_RETRY_SHIFT) |
1556                 MAC_HALF_DUPLX_CTRL_EXC_DEF_EN |
1557                 (0xa << MAC_HALF_DUPLX_CTRL_ABEBT_SHIFT) |
1558                 (((u32) hw->jam_ipg & MAC_HALF_DUPLX_CTRL_JAMIPG_MASK)
1559                 << MAC_HALF_DUPLX_CTRL_JAMIPG_SHIFT);
1560         iowrite32(value, hw->hw_addr + REG_MAC_HALF_DUPLX_CTRL);
1561
1562         /* set Interrupt Moderator Timer */
1563         iowrite16(adapter->imt, hw->hw_addr + REG_IRQ_MODU_TIMER_INIT);
1564         iowrite32(MASTER_CTRL_ITIMER_EN, hw->hw_addr + REG_MASTER_CTRL);
1565
1566         /* set Interrupt Clear Timer */
1567         iowrite16(adapter->ict, hw->hw_addr + REG_CMBDISDMA_TIMER);
1568
1569         /* set max frame size hw will accept */
1570         iowrite32(hw->max_frame_size, hw->hw_addr + REG_MTU);
1571
1572         /* jumbo size & rrd retirement timer */
1573         value = (((u32) hw->rx_jumbo_th & RXQ_JMBOSZ_TH_MASK)
1574                  << RXQ_JMBOSZ_TH_SHIFT) |
1575                 (((u32) hw->rx_jumbo_lkah & RXQ_JMBO_LKAH_MASK)
1576                 << RXQ_JMBO_LKAH_SHIFT) |
1577                 (((u32) hw->rrd_ret_timer & RXQ_RRD_TIMER_MASK)
1578                 << RXQ_RRD_TIMER_SHIFT);
1579         iowrite32(value, hw->hw_addr + REG_RXQ_JMBOSZ_RRDTIM);
1580
1581         /* Flow Control */
1582         switch (hw->dev_rev) {
1583         case 0x8001:
1584         case 0x9001:
1585         case 0x9002:
1586         case 0x9003:
1587                 set_flow_ctrl_old(adapter);
1588                 break;
1589         default:
1590                 set_flow_ctrl_new(hw);
1591                 break;
1592         }
1593
1594         /* config TXQ */
1595         value = (((u32) hw->tpd_burst & TXQ_CTRL_TPD_BURST_NUM_MASK)
1596                  << TXQ_CTRL_TPD_BURST_NUM_SHIFT) |
1597                 (((u32) hw->txf_burst & TXQ_CTRL_TXF_BURST_NUM_MASK)
1598                 << TXQ_CTRL_TXF_BURST_NUM_SHIFT) |
1599                 (((u32) hw->tpd_fetch_th & TXQ_CTRL_TPD_FETCH_TH_MASK)
1600                 << TXQ_CTRL_TPD_FETCH_TH_SHIFT) | TXQ_CTRL_ENH_MODE |
1601                 TXQ_CTRL_EN;
1602         iowrite32(value, hw->hw_addr + REG_TXQ_CTRL);
1603
1604         /* min tpd fetch gap & tx jumbo packet size threshold for taskoffload */
1605         value = (((u32) hw->tx_jumbo_task_th & TX_JUMBO_TASK_TH_MASK)
1606                 << TX_JUMBO_TASK_TH_SHIFT) |
1607                 (((u32) hw->tpd_fetch_gap & TX_TPD_MIN_IPG_MASK)
1608                 << TX_TPD_MIN_IPG_SHIFT);
1609         iowrite32(value, hw->hw_addr + REG_TX_JUMBO_TASK_TH_TPD_IPG);
1610
1611         /* config RXQ */
1612         value = (((u32) hw->rfd_burst & RXQ_CTRL_RFD_BURST_NUM_MASK)
1613                 << RXQ_CTRL_RFD_BURST_NUM_SHIFT) |
1614                 (((u32) hw->rrd_burst & RXQ_CTRL_RRD_BURST_THRESH_MASK)
1615                 << RXQ_CTRL_RRD_BURST_THRESH_SHIFT) |
1616                 (((u32) hw->rfd_fetch_gap & RXQ_CTRL_RFD_PREF_MIN_IPG_MASK)
1617                 << RXQ_CTRL_RFD_PREF_MIN_IPG_SHIFT) | RXQ_CTRL_CUT_THRU_EN |
1618                 RXQ_CTRL_EN;
1619         iowrite32(value, hw->hw_addr + REG_RXQ_CTRL);
1620
1621         /* config DMA Engine */
1622         value = ((((u32) hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK)
1623                 << DMA_CTRL_DMAR_BURST_LEN_SHIFT) |
1624                 ((((u32) hw->dmaw_block) & DMA_CTRL_DMAW_BURST_LEN_MASK)
1625                 << DMA_CTRL_DMAW_BURST_LEN_SHIFT) | DMA_CTRL_DMAR_EN |
1626                 DMA_CTRL_DMAW_EN;
1627         value |= (u32) hw->dma_ord;
1628         if (atl1_rcb_128 == hw->rcb_value)
1629                 value |= DMA_CTRL_RCB_VALUE;
1630         iowrite32(value, hw->hw_addr + REG_DMA_CTRL);
1631
1632         /* config CMB / SMB */
1633         value = (hw->cmb_tpd > adapter->tpd_ring.count) ?
1634                 hw->cmb_tpd : adapter->tpd_ring.count;
1635         value <<= 16;
1636         value |= hw->cmb_rrd;
1637         iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TH);
1638         value = hw->cmb_rx_timer | ((u32) hw->cmb_tx_timer << 16);
1639         iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TIMER);
1640         iowrite32(hw->smb_timer, hw->hw_addr + REG_SMB_TIMER);
1641
1642         /* --- enable CMB / SMB */
1643         value = CSMB_CTRL_CMB_EN | CSMB_CTRL_SMB_EN;
1644         iowrite32(value, hw->hw_addr + REG_CSMB_CTRL);
1645
1646         value = ioread32(adapter->hw.hw_addr + REG_ISR);
1647         if (unlikely((value & ISR_PHY_LINKDOWN) != 0))
1648                 value = 1;      /* config failed */
1649         else
1650                 value = 0;
1651
1652         /* clear all interrupt status */
1653         iowrite32(0x3fffffff, adapter->hw.hw_addr + REG_ISR);
1654         iowrite32(0, adapter->hw.hw_addr + REG_ISR);
1655         return value;
1656 }
1657
1658 /*
1659  * atl1_pcie_patch - Patch for PCIE module
1660  */
1661 static void atl1_pcie_patch(struct atl1_adapter *adapter)
1662 {
1663         u32 value;
1664
1665         /* much vendor magic here */
1666         value = 0x6500;
1667         iowrite32(value, adapter->hw.hw_addr + 0x12FC);
1668         /* pcie flow control mode change */
1669         value = ioread32(adapter->hw.hw_addr + 0x1008);
1670         value |= 0x8000;
1671         iowrite32(value, adapter->hw.hw_addr + 0x1008);
1672 }
1673
1674 /*
1675  * When ACPI resume on some VIA MotherBoard, the Interrupt Disable bit/0x400
1676  * on PCI Command register is disable.
1677  * The function enable this bit.
1678  * Brackett, 2006/03/15
1679  */
1680 static void atl1_via_workaround(struct atl1_adapter *adapter)
1681 {
1682         unsigned long value;
1683
1684         value = ioread16(adapter->hw.hw_addr + PCI_COMMAND);
1685         if (value & PCI_COMMAND_INTX_DISABLE)
1686                 value &= ~PCI_COMMAND_INTX_DISABLE;
1687         iowrite32(value, adapter->hw.hw_addr + PCI_COMMAND);
1688 }
1689
1690 static void atl1_inc_smb(struct atl1_adapter *adapter)
1691 {
1692         struct stats_msg_block *smb = adapter->smb.smb;
1693
1694         /* Fill out the OS statistics structure */
1695         adapter->soft_stats.rx_packets += smb->rx_ok;
1696         adapter->soft_stats.tx_packets += smb->tx_ok;
1697         adapter->soft_stats.rx_bytes += smb->rx_byte_cnt;
1698         adapter->soft_stats.tx_bytes += smb->tx_byte_cnt;
1699         adapter->soft_stats.multicast += smb->rx_mcast;
1700         adapter->soft_stats.collisions += (smb->tx_1_col + smb->tx_2_col * 2 +
1701                 smb->tx_late_col + smb->tx_abort_col * adapter->hw.max_retry);
1702
1703         /* Rx Errors */
1704         adapter->soft_stats.rx_errors += (smb->rx_frag + smb->rx_fcs_err +
1705                 smb->rx_len_err + smb->rx_sz_ov + smb->rx_rxf_ov +
1706                 smb->rx_rrd_ov + smb->rx_align_err);
1707         adapter->soft_stats.rx_fifo_errors += smb->rx_rxf_ov;
1708         adapter->soft_stats.rx_length_errors += smb->rx_len_err;
1709         adapter->soft_stats.rx_crc_errors += smb->rx_fcs_err;
1710         adapter->soft_stats.rx_frame_errors += smb->rx_align_err;
1711         adapter->soft_stats.rx_missed_errors += (smb->rx_rrd_ov +
1712                 smb->rx_rxf_ov);
1713
1714         adapter->soft_stats.rx_pause += smb->rx_pause;
1715         adapter->soft_stats.rx_rrd_ov += smb->rx_rrd_ov;
1716         adapter->soft_stats.rx_trunc += smb->rx_sz_ov;
1717
1718         /* Tx Errors */
1719         adapter->soft_stats.tx_errors += (smb->tx_late_col +
1720                 smb->tx_abort_col + smb->tx_underrun + smb->tx_trunc);
1721         adapter->soft_stats.tx_fifo_errors += smb->tx_underrun;
1722         adapter->soft_stats.tx_aborted_errors += smb->tx_abort_col;
1723         adapter->soft_stats.tx_window_errors += smb->tx_late_col;
1724
1725         adapter->soft_stats.excecol += smb->tx_abort_col;
1726         adapter->soft_stats.deffer += smb->tx_defer;
1727         adapter->soft_stats.scc += smb->tx_1_col;
1728         adapter->soft_stats.mcc += smb->tx_2_col;
1729         adapter->soft_stats.latecol += smb->tx_late_col;
1730         adapter->soft_stats.tx_underun += smb->tx_underrun;
1731         adapter->soft_stats.tx_trunc += smb->tx_trunc;
1732         adapter->soft_stats.tx_pause += smb->tx_pause;
1733
1734         adapter->net_stats.rx_packets = adapter->soft_stats.rx_packets;
1735         adapter->net_stats.tx_packets = adapter->soft_stats.tx_packets;
1736         adapter->net_stats.rx_bytes = adapter->soft_stats.rx_bytes;
1737         adapter->net_stats.tx_bytes = adapter->soft_stats.tx_bytes;
1738         adapter->net_stats.multicast = adapter->soft_stats.multicast;
1739         adapter->net_stats.collisions = adapter->soft_stats.collisions;
1740         adapter->net_stats.rx_errors = adapter->soft_stats.rx_errors;
1741         adapter->net_stats.rx_over_errors =
1742                 adapter->soft_stats.rx_missed_errors;
1743         adapter->net_stats.rx_length_errors =
1744                 adapter->soft_stats.rx_length_errors;
1745         adapter->net_stats.rx_crc_errors = adapter->soft_stats.rx_crc_errors;
1746         adapter->net_stats.rx_frame_errors =
1747                 adapter->soft_stats.rx_frame_errors;
1748         adapter->net_stats.rx_fifo_errors = adapter->soft_stats.rx_fifo_errors;
1749         adapter->net_stats.rx_missed_errors =
1750                 adapter->soft_stats.rx_missed_errors;
1751         adapter->net_stats.tx_errors = adapter->soft_stats.tx_errors;
1752         adapter->net_stats.tx_fifo_errors = adapter->soft_stats.tx_fifo_errors;
1753         adapter->net_stats.tx_aborted_errors =
1754                 adapter->soft_stats.tx_aborted_errors;
1755         adapter->net_stats.tx_window_errors =
1756                 adapter->soft_stats.tx_window_errors;
1757         adapter->net_stats.tx_carrier_errors =
1758                 adapter->soft_stats.tx_carrier_errors;
1759 }
1760
1761 static void atl1_update_mailbox(struct atl1_adapter *adapter)
1762 {
1763         unsigned long flags;
1764         u32 tpd_next_to_use;
1765         u32 rfd_next_to_use;
1766         u32 rrd_next_to_clean;
1767         u32 value;
1768
1769         spin_lock_irqsave(&adapter->mb_lock, flags);
1770
1771         tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use);
1772         rfd_next_to_use = atomic_read(&adapter->rfd_ring.next_to_use);
1773         rrd_next_to_clean = atomic_read(&adapter->rrd_ring.next_to_clean);
1774
1775         value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) <<
1776                 MB_RFD_PROD_INDX_SHIFT) |
1777                 ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) <<
1778                 MB_RRD_CONS_INDX_SHIFT) |
1779                 ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) <<
1780                 MB_TPD_PROD_INDX_SHIFT);
1781         iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX);
1782
1783         spin_unlock_irqrestore(&adapter->mb_lock, flags);
1784 }
1785
1786 static void atl1_clean_alloc_flag(struct atl1_adapter *adapter,
1787         struct rx_return_desc *rrd, u16 offset)
1788 {
1789         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1790
1791         while (rfd_ring->next_to_clean != (rrd->buf_indx + offset)) {
1792                 rfd_ring->buffer_info[rfd_ring->next_to_clean].alloced = 0;
1793                 if (++rfd_ring->next_to_clean == rfd_ring->count) {
1794                         rfd_ring->next_to_clean = 0;
1795                 }
1796         }
1797 }
1798
1799 static void atl1_update_rfd_index(struct atl1_adapter *adapter,
1800         struct rx_return_desc *rrd)
1801 {
1802         u16 num_buf;
1803
1804         num_buf = (rrd->xsz.xsum_sz.pkt_size + adapter->rx_buffer_len - 1) /
1805                 adapter->rx_buffer_len;
1806         if (rrd->num_buf == num_buf)
1807                 /* clean alloc flag for bad rrd */
1808                 atl1_clean_alloc_flag(adapter, rrd, num_buf);
1809 }
1810
1811 static void atl1_rx_checksum(struct atl1_adapter *adapter,
1812         struct rx_return_desc *rrd, struct sk_buff *skb)
1813 {
1814         struct pci_dev *pdev = adapter->pdev;
1815
1816         skb->ip_summed = CHECKSUM_NONE;
1817
1818         if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) {
1819                 if (rrd->err_flg & (ERR_FLAG_CRC | ERR_FLAG_TRUNC |
1820                                         ERR_FLAG_CODE | ERR_FLAG_OV)) {
1821                         adapter->hw_csum_err++;
1822                         if (netif_msg_rx_err(adapter))
1823                                 dev_printk(KERN_DEBUG, &pdev->dev,
1824                                         "rx checksum error\n");
1825                         return;
1826                 }
1827         }
1828
1829         /* not IPv4 */
1830         if (!(rrd->pkt_flg & PACKET_FLAG_IPV4))
1831                 /* checksum is invalid, but it's not an IPv4 pkt, so ok */
1832                 return;
1833
1834         /* IPv4 packet */
1835         if (likely(!(rrd->err_flg &
1836                 (ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM)))) {
1837                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1838                 adapter->hw_csum_good++;
1839                 return;
1840         }
1841
1842         /* IPv4, but hardware thinks its checksum is wrong */
1843         if (netif_msg_rx_err(adapter))
1844                 dev_printk(KERN_DEBUG, &pdev->dev,
1845                         "hw csum wrong, pkt_flag:%x, err_flag:%x\n",
1846                         rrd->pkt_flg, rrd->err_flg);
1847         skb->ip_summed = CHECKSUM_COMPLETE;
1848         skb->csum = htons(rrd->xsz.xsum_sz.rx_chksum);
1849         adapter->hw_csum_err++;
1850         return;
1851 }
1852
1853 /*
1854  * atl1_alloc_rx_buffers - Replace used receive buffers
1855  * @adapter: address of board private structure
1856  */
1857 static u16 atl1_alloc_rx_buffers(struct atl1_adapter *adapter)
1858 {
1859         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1860         struct pci_dev *pdev = adapter->pdev;
1861         struct page *page;
1862         unsigned long offset;
1863         struct atl1_buffer *buffer_info, *next_info;
1864         struct sk_buff *skb;
1865         u16 num_alloc = 0;
1866         u16 rfd_next_to_use, next_next;
1867         struct rx_free_desc *rfd_desc;
1868
1869         next_next = rfd_next_to_use = atomic_read(&rfd_ring->next_to_use);
1870         if (++next_next == rfd_ring->count)
1871                 next_next = 0;
1872         buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
1873         next_info = &rfd_ring->buffer_info[next_next];
1874
1875         while (!buffer_info->alloced && !next_info->alloced) {
1876                 if (buffer_info->skb) {
1877                         buffer_info->alloced = 1;
1878                         goto next;
1879                 }
1880
1881                 rfd_desc = ATL1_RFD_DESC(rfd_ring, rfd_next_to_use);
1882
1883                 skb = dev_alloc_skb(adapter->rx_buffer_len + NET_IP_ALIGN);
1884                 if (unlikely(!skb)) {
1885                         /* Better luck next round */
1886                         adapter->net_stats.rx_dropped++;
1887                         break;
1888                 }
1889
1890                 /*
1891                  * Make buffer alignment 2 beyond a 16 byte boundary
1892                  * this will result in a 16 byte aligned IP header after
1893                  * the 14 byte MAC header is removed
1894                  */
1895                 skb_reserve(skb, NET_IP_ALIGN);
1896
1897                 buffer_info->alloced = 1;
1898                 buffer_info->skb = skb;
1899                 buffer_info->length = (u16) adapter->rx_buffer_len;
1900                 page = virt_to_page(skb->data);
1901                 offset = (unsigned long)skb->data & ~PAGE_MASK;
1902                 buffer_info->dma = pci_map_page(pdev, page, offset,
1903                                                 adapter->rx_buffer_len,
1904                                                 PCI_DMA_FROMDEVICE);
1905                 rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
1906                 rfd_desc->buf_len = cpu_to_le16(adapter->rx_buffer_len);
1907                 rfd_desc->coalese = 0;
1908
1909 next:
1910                 rfd_next_to_use = next_next;
1911                 if (unlikely(++next_next == rfd_ring->count))
1912                         next_next = 0;
1913
1914                 buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
1915                 next_info = &rfd_ring->buffer_info[next_next];
1916                 num_alloc++;
1917         }
1918
1919         if (num_alloc) {
1920                 /*
1921                  * Force memory writes to complete before letting h/w
1922                  * know there are new descriptors to fetch.  (Only
1923                  * applicable for weak-ordered memory model archs,
1924                  * such as IA-64).
1925                  */
1926                 wmb();
1927                 atomic_set(&rfd_ring->next_to_use, (int)rfd_next_to_use);
1928         }
1929         return num_alloc;
1930 }
1931
1932 static void atl1_intr_rx(struct atl1_adapter *adapter)
1933 {
1934         int i, count;
1935         u16 length;
1936         u16 rrd_next_to_clean;
1937         u32 value;
1938         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1939         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1940         struct atl1_buffer *buffer_info;
1941         struct rx_return_desc *rrd;
1942         struct sk_buff *skb;
1943
1944         count = 0;
1945
1946         rrd_next_to_clean = atomic_read(&rrd_ring->next_to_clean);
1947
1948         while (1) {
1949                 rrd = ATL1_RRD_DESC(rrd_ring, rrd_next_to_clean);
1950                 i = 1;
1951                 if (likely(rrd->xsz.valid)) {   /* packet valid */
1952 chk_rrd:
1953                         /* check rrd status */
1954                         if (likely(rrd->num_buf == 1))
1955                                 goto rrd_ok;
1956                         else if (netif_msg_rx_err(adapter)) {
1957                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1958                                         "unexpected RRD buffer count\n");
1959                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1960                                         "rx_buf_len = %d\n",
1961                                         adapter->rx_buffer_len);
1962                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1963                                         "RRD num_buf = %d\n",
1964                                         rrd->num_buf);
1965                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1966                                         "RRD pkt_len = %d\n",
1967                                         rrd->xsz.xsum_sz.pkt_size);
1968                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1969                                         "RRD pkt_flg = 0x%08X\n",
1970                                         rrd->pkt_flg);
1971                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1972                                         "RRD err_flg = 0x%08X\n",
1973                                         rrd->err_flg);
1974                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1975                                         "RRD vlan_tag = 0x%08X\n",
1976                                         rrd->vlan_tag);
1977                         }
1978
1979                         /* rrd seems to be bad */
1980                         if (unlikely(i-- > 0)) {
1981                                 /* rrd may not be DMAed completely */
1982                                 udelay(1);
1983                                 goto chk_rrd;
1984                         }
1985                         /* bad rrd */
1986                         if (netif_msg_rx_err(adapter))
1987                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1988                                         "bad RRD\n");
1989                         /* see if update RFD index */
1990                         if (rrd->num_buf > 1)
1991                                 atl1_update_rfd_index(adapter, rrd);
1992
1993                         /* update rrd */
1994                         rrd->xsz.valid = 0;
1995                         if (++rrd_next_to_clean == rrd_ring->count)
1996                                 rrd_next_to_clean = 0;
1997                         count++;
1998                         continue;
1999                 } else {        /* current rrd still not be updated */
2000
2001                         break;
2002                 }
2003 rrd_ok:
2004                 /* clean alloc flag for bad rrd */
2005                 atl1_clean_alloc_flag(adapter, rrd, 0);
2006
2007                 buffer_info = &rfd_ring->buffer_info[rrd->buf_indx];
2008                 if (++rfd_ring->next_to_clean == rfd_ring->count)
2009                         rfd_ring->next_to_clean = 0;
2010
2011                 /* update rrd next to clean */
2012                 if (++rrd_next_to_clean == rrd_ring->count)
2013                         rrd_next_to_clean = 0;
2014                 count++;
2015
2016                 if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) {
2017                         if (!(rrd->err_flg &
2018                                 (ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM
2019                                 | ERR_FLAG_LEN))) {
2020                                 /* packet error, don't need upstream */
2021                                 buffer_info->alloced = 0;
2022                                 rrd->xsz.valid = 0;
2023                                 continue;
2024                         }
2025                 }
2026
2027                 /* Good Receive */
2028                 pci_unmap_page(adapter->pdev, buffer_info->dma,
2029                                buffer_info->length, PCI_DMA_FROMDEVICE);
2030                 skb = buffer_info->skb;
2031                 length = le16_to_cpu(rrd->xsz.xsum_sz.pkt_size);
2032
2033                 skb_put(skb, length - ETH_FCS_LEN);
2034
2035                 /* Receive Checksum Offload */
2036                 atl1_rx_checksum(adapter, rrd, skb);
2037                 skb->protocol = eth_type_trans(skb, adapter->netdev);
2038
2039                 if (adapter->vlgrp && (rrd->pkt_flg & PACKET_FLAG_VLAN_INS)) {
2040                         u16 vlan_tag = (rrd->vlan_tag >> 4) |
2041                                         ((rrd->vlan_tag & 7) << 13) |
2042                                         ((rrd->vlan_tag & 8) << 9);
2043                         vlan_hwaccel_rx(skb, adapter->vlgrp, vlan_tag);
2044                 } else
2045                         netif_rx(skb);
2046
2047                 /* let protocol layer free skb */
2048                 buffer_info->skb = NULL;
2049                 buffer_info->alloced = 0;
2050                 rrd->xsz.valid = 0;
2051
2052                 adapter->netdev->last_rx = jiffies;
2053         }
2054
2055         atomic_set(&rrd_ring->next_to_clean, rrd_next_to_clean);
2056
2057         atl1_alloc_rx_buffers(adapter);
2058
2059         /* update mailbox ? */
2060         if (count) {
2061                 u32 tpd_next_to_use;
2062                 u32 rfd_next_to_use;
2063
2064                 spin_lock(&adapter->mb_lock);
2065
2066                 tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use);
2067                 rfd_next_to_use =
2068                     atomic_read(&adapter->rfd_ring.next_to_use);
2069                 rrd_next_to_clean =
2070                     atomic_read(&adapter->rrd_ring.next_to_clean);
2071                 value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) <<
2072                         MB_RFD_PROD_INDX_SHIFT) |
2073                         ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) <<
2074                         MB_RRD_CONS_INDX_SHIFT) |
2075                         ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) <<
2076                         MB_TPD_PROD_INDX_SHIFT);
2077                 iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX);
2078                 spin_unlock(&adapter->mb_lock);
2079         }
2080 }
2081
2082 static void atl1_intr_tx(struct atl1_adapter *adapter)
2083 {
2084         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2085         struct atl1_buffer *buffer_info;
2086         u16 sw_tpd_next_to_clean;
2087         u16 cmb_tpd_next_to_clean;
2088
2089         sw_tpd_next_to_clean = atomic_read(&tpd_ring->next_to_clean);
2090         cmb_tpd_next_to_clean = le16_to_cpu(adapter->cmb.cmb->tpd_cons_idx);
2091
2092         while (cmb_tpd_next_to_clean != sw_tpd_next_to_clean) {
2093                 struct tx_packet_desc *tpd;
2094
2095                 tpd = ATL1_TPD_DESC(tpd_ring, sw_tpd_next_to_clean);
2096                 buffer_info = &tpd_ring->buffer_info[sw_tpd_next_to_clean];
2097                 if (buffer_info->dma) {
2098                         pci_unmap_page(adapter->pdev, buffer_info->dma,
2099                                        buffer_info->length, PCI_DMA_TODEVICE);
2100                         buffer_info->dma = 0;
2101                 }
2102
2103                 if (buffer_info->skb) {
2104                         dev_kfree_skb_irq(buffer_info->skb);
2105                         buffer_info->skb = NULL;
2106                 }
2107
2108                 if (++sw_tpd_next_to_clean == tpd_ring->count)
2109                         sw_tpd_next_to_clean = 0;
2110         }
2111         atomic_set(&tpd_ring->next_to_clean, sw_tpd_next_to_clean);
2112
2113         if (netif_queue_stopped(adapter->netdev)
2114             && netif_carrier_ok(adapter->netdev))
2115                 netif_wake_queue(adapter->netdev);
2116 }
2117
2118 static u16 atl1_tpd_avail(struct atl1_tpd_ring *tpd_ring)
2119 {
2120         u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean);
2121         u16 next_to_use = atomic_read(&tpd_ring->next_to_use);
2122         return ((next_to_clean > next_to_use) ?
2123                 next_to_clean - next_to_use - 1 :
2124                 tpd_ring->count + next_to_clean - next_to_use - 1);
2125 }
2126
2127 static int atl1_tso(struct atl1_adapter *adapter, struct sk_buff *skb,
2128         struct tx_packet_desc *ptpd)
2129 {
2130         /* spinlock held */
2131         u8 hdr_len, ip_off;
2132         u32 real_len;
2133         int err;
2134
2135         if (skb_shinfo(skb)->gso_size) {
2136                 if (skb_header_cloned(skb)) {
2137                         err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
2138                         if (unlikely(err))
2139                                 return -1;
2140                 }
2141
2142                 if (skb->protocol == ntohs(ETH_P_IP)) {
2143                         struct iphdr *iph = ip_hdr(skb);
2144
2145                         real_len = (((unsigned char *)iph - skb->data) +
2146                                 ntohs(iph->tot_len));
2147                         if (real_len < skb->len)
2148                                 pskb_trim(skb, real_len);
2149                         hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb));
2150                         if (skb->len == hdr_len) {
2151                                 iph->check = 0;
2152                                 tcp_hdr(skb)->check =
2153                                         ~csum_tcpudp_magic(iph->saddr,
2154                                         iph->daddr, tcp_hdrlen(skb),
2155                                         IPPROTO_TCP, 0);
2156                                 ptpd->word3 |= (iph->ihl & TPD_IPHL_MASK) <<
2157                                         TPD_IPHL_SHIFT;
2158                                 ptpd->word3 |= ((tcp_hdrlen(skb) >> 2) &
2159                                         TPD_TCPHDRLEN_MASK) <<
2160                                         TPD_TCPHDRLEN_SHIFT;
2161                                 ptpd->word3 |= 1 << TPD_IP_CSUM_SHIFT;
2162                                 ptpd->word3 |= 1 << TPD_TCP_CSUM_SHIFT;
2163                                 return 1;
2164                         }
2165
2166                         iph->check = 0;
2167                         tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2168                                         iph->daddr, 0, IPPROTO_TCP, 0);
2169                         ip_off = (unsigned char *)iph -
2170                                 (unsigned char *) skb_network_header(skb);
2171                         if (ip_off == 8) /* 802.3-SNAP frame */
2172                                 ptpd->word3 |= 1 << TPD_ETHTYPE_SHIFT;
2173                         else if (ip_off != 0)
2174                                 return -2;
2175
2176                         ptpd->word3 |= (iph->ihl & TPD_IPHL_MASK) <<
2177                                 TPD_IPHL_SHIFT;
2178                         ptpd->word3 |= ((tcp_hdrlen(skb) >> 2) &
2179                                 TPD_TCPHDRLEN_MASK) << TPD_TCPHDRLEN_SHIFT;
2180                         ptpd->word3 |= (skb_shinfo(skb)->gso_size &
2181                                 TPD_MSS_MASK) << TPD_MSS_SHIFT;
2182                         ptpd->word3 |= 1 << TPD_SEGMENT_EN_SHIFT;
2183                         return 3;
2184                 }
2185         }
2186         return false;
2187 }
2188
2189 static int atl1_tx_csum(struct atl1_adapter *adapter, struct sk_buff *skb,
2190         struct tx_packet_desc *ptpd)
2191 {
2192         u8 css, cso;
2193
2194         if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
2195                 css = (u8) (skb->csum_start - skb_headroom(skb));
2196                 cso = css + (u8) skb->csum_offset;
2197                 if (unlikely(css & 0x1)) {
2198                         /* L1 hardware requires an even number here */
2199                         if (netif_msg_tx_err(adapter))
2200                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2201                                         "payload offset not an even number\n");
2202                         return -1;
2203                 }
2204                 ptpd->word3 |= (css & TPD_PLOADOFFSET_MASK) <<
2205                         TPD_PLOADOFFSET_SHIFT;
2206                 ptpd->word3 |= (cso & TPD_CCSUMOFFSET_MASK) <<
2207                         TPD_CCSUMOFFSET_SHIFT;
2208                 ptpd->word3 |= 1 << TPD_CUST_CSUM_EN_SHIFT;
2209                 return true;
2210         }
2211         return 0;
2212 }
2213
2214 static void atl1_tx_map(struct atl1_adapter *adapter, struct sk_buff *skb,
2215         struct tx_packet_desc *ptpd)
2216 {
2217         /* spinlock held */
2218         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2219         struct atl1_buffer *buffer_info;
2220         u16 buf_len = skb->len;
2221         struct page *page;
2222         unsigned long offset;
2223         unsigned int nr_frags;
2224         unsigned int f;
2225         int retval;
2226         u16 next_to_use;
2227         u16 data_len;
2228         u8 hdr_len;
2229
2230         buf_len -= skb->data_len;
2231         nr_frags = skb_shinfo(skb)->nr_frags;
2232         next_to_use = atomic_read(&tpd_ring->next_to_use);
2233         buffer_info = &tpd_ring->buffer_info[next_to_use];
2234         if (unlikely(buffer_info->skb))
2235                 BUG();
2236         /* put skb in last TPD */
2237         buffer_info->skb = NULL;
2238
2239         retval = (ptpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK;
2240         if (retval) {
2241                 /* TSO */
2242                 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
2243                 buffer_info->length = hdr_len;
2244                 page = virt_to_page(skb->data);
2245                 offset = (unsigned long)skb->data & ~PAGE_MASK;
2246                 buffer_info->dma = pci_map_page(adapter->pdev, page,
2247                                                 offset, hdr_len,
2248                                                 PCI_DMA_TODEVICE);
2249
2250                 if (++next_to_use == tpd_ring->count)
2251                         next_to_use = 0;
2252
2253                 if (buf_len > hdr_len) {
2254                         int i, nseg;
2255
2256                         data_len = buf_len - hdr_len;
2257                         nseg = (data_len + ATL1_MAX_TX_BUF_LEN - 1) /
2258                                 ATL1_MAX_TX_BUF_LEN;
2259                         for (i = 0; i < nseg; i++) {
2260                                 buffer_info =
2261                                     &tpd_ring->buffer_info[next_to_use];
2262                                 buffer_info->skb = NULL;
2263                                 buffer_info->length =
2264                                     (ATL1_MAX_TX_BUF_LEN >=
2265                                      data_len) ? ATL1_MAX_TX_BUF_LEN : data_len;
2266                                 data_len -= buffer_info->length;
2267                                 page = virt_to_page(skb->data +
2268                                         (hdr_len + i * ATL1_MAX_TX_BUF_LEN));
2269                                 offset = (unsigned long)(skb->data +
2270                                         (hdr_len + i * ATL1_MAX_TX_BUF_LEN)) &
2271                                         ~PAGE_MASK;
2272                                 buffer_info->dma = pci_map_page(adapter->pdev,
2273                                         page, offset, buffer_info->length,
2274                                         PCI_DMA_TODEVICE);
2275                                 if (++next_to_use == tpd_ring->count)
2276                                         next_to_use = 0;
2277                         }
2278                 }
2279         } else {
2280                 /* not TSO */
2281                 buffer_info->length = buf_len;
2282                 page = virt_to_page(skb->data);
2283                 offset = (unsigned long)skb->data & ~PAGE_MASK;
2284                 buffer_info->dma = pci_map_page(adapter->pdev, page,
2285                         offset, buf_len, PCI_DMA_TODEVICE);
2286                 if (++next_to_use == tpd_ring->count)
2287                         next_to_use = 0;
2288         }
2289
2290         for (f = 0; f < nr_frags; f++) {
2291                 struct skb_frag_struct *frag;
2292                 u16 i, nseg;
2293
2294                 frag = &skb_shinfo(skb)->frags[f];
2295                 buf_len = frag->size;
2296
2297                 nseg = (buf_len + ATL1_MAX_TX_BUF_LEN - 1) /
2298                         ATL1_MAX_TX_BUF_LEN;
2299                 for (i = 0; i < nseg; i++) {
2300                         buffer_info = &tpd_ring->buffer_info[next_to_use];
2301                         if (unlikely(buffer_info->skb))
2302                                 BUG();
2303                         buffer_info->skb = NULL;
2304                         buffer_info->length = (buf_len > ATL1_MAX_TX_BUF_LEN) ?
2305                                 ATL1_MAX_TX_BUF_LEN : buf_len;
2306                         buf_len -= buffer_info->length;
2307                         buffer_info->dma = pci_map_page(adapter->pdev,
2308                                 frag->page,
2309                                 frag->page_offset + (i * ATL1_MAX_TX_BUF_LEN),
2310                                 buffer_info->length, PCI_DMA_TODEVICE);
2311
2312                         if (++next_to_use == tpd_ring->count)
2313                                 next_to_use = 0;
2314                 }
2315         }
2316
2317         /* last tpd's buffer-info */
2318         buffer_info->skb = skb;
2319 }
2320
2321 static void atl1_tx_queue(struct atl1_adapter *adapter, u16 count,
2322        struct tx_packet_desc *ptpd)
2323 {
2324         /* spinlock held */
2325         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2326         struct atl1_buffer *buffer_info;
2327         struct tx_packet_desc *tpd;
2328         u16 j;
2329         u32 val;
2330         u16 next_to_use = (u16) atomic_read(&tpd_ring->next_to_use);
2331
2332         for (j = 0; j < count; j++) {
2333                 buffer_info = &tpd_ring->buffer_info[next_to_use];
2334                 tpd = ATL1_TPD_DESC(&adapter->tpd_ring, next_to_use);
2335                 if (tpd != ptpd)
2336                         memcpy(tpd, ptpd, sizeof(struct tx_packet_desc));
2337                 tpd->buffer_addr = cpu_to_le64(buffer_info->dma);
2338                 tpd->word2 = (cpu_to_le16(buffer_info->length) &
2339                         TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT;
2340
2341                 /*
2342                  * if this is the first packet in a TSO chain, set
2343                  * TPD_HDRFLAG, otherwise, clear it.
2344                  */
2345                 val = (tpd->word3 >> TPD_SEGMENT_EN_SHIFT) &
2346                         TPD_SEGMENT_EN_MASK;
2347                 if (val) {
2348                         if (!j)
2349                                 tpd->word3 |= 1 << TPD_HDRFLAG_SHIFT;
2350                         else
2351                                 tpd->word3 &= ~(1 << TPD_HDRFLAG_SHIFT);
2352                 }
2353
2354                 if (j == (count - 1))
2355                         tpd->word3 |= 1 << TPD_EOP_SHIFT;
2356
2357                 if (++next_to_use == tpd_ring->count)
2358                         next_to_use = 0;
2359         }
2360         /*
2361          * Force memory writes to complete before letting h/w
2362          * know there are new descriptors to fetch.  (Only
2363          * applicable for weak-ordered memory model archs,
2364          * such as IA-64).
2365          */
2366         wmb();
2367
2368         atomic_set(&tpd_ring->next_to_use, next_to_use);
2369 }
2370
2371 static int atl1_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
2372 {
2373         struct atl1_adapter *adapter = netdev_priv(netdev);
2374         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2375         int len = skb->len;
2376         int tso;
2377         int count = 1;
2378         int ret_val;
2379         struct tx_packet_desc *ptpd;
2380         u16 frag_size;
2381         u16 vlan_tag;
2382         unsigned long flags;
2383         unsigned int nr_frags = 0;
2384         unsigned int mss = 0;
2385         unsigned int f;
2386         unsigned int proto_hdr_len;
2387
2388         len -= skb->data_len;
2389
2390         if (unlikely(skb->len <= 0)) {
2391                 dev_kfree_skb_any(skb);
2392                 return NETDEV_TX_OK;
2393         }
2394
2395         nr_frags = skb_shinfo(skb)->nr_frags;
2396         for (f = 0; f < nr_frags; f++) {
2397                 frag_size = skb_shinfo(skb)->frags[f].size;
2398                 if (frag_size)
2399                         count += (frag_size + ATL1_MAX_TX_BUF_LEN - 1) /
2400                                 ATL1_MAX_TX_BUF_LEN;
2401         }
2402
2403         mss = skb_shinfo(skb)->gso_size;
2404         if (mss) {
2405                 if (skb->protocol == ntohs(ETH_P_IP)) {
2406                         proto_hdr_len = (skb_transport_offset(skb) +
2407                                          tcp_hdrlen(skb));
2408                         if (unlikely(proto_hdr_len > len)) {
2409                                 dev_kfree_skb_any(skb);
2410                                 return NETDEV_TX_OK;
2411                         }
2412                         /* need additional TPD ? */
2413                         if (proto_hdr_len != len)
2414                                 count += (len - proto_hdr_len +
2415                                         ATL1_MAX_TX_BUF_LEN - 1) /
2416                                         ATL1_MAX_TX_BUF_LEN;
2417                 }
2418         }
2419
2420         if (!spin_trylock_irqsave(&adapter->lock, flags)) {
2421                 /* Can't get lock - tell upper layer to requeue */
2422                 if (netif_msg_tx_queued(adapter))
2423                         dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2424                                 "tx locked\n");
2425                 return NETDEV_TX_LOCKED;
2426         }
2427
2428         if (atl1_tpd_avail(&adapter->tpd_ring) < count) {
2429                 /* not enough descriptors */
2430                 netif_stop_queue(netdev);
2431                 spin_unlock_irqrestore(&adapter->lock, flags);
2432                 if (netif_msg_tx_queued(adapter))
2433                         dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2434                                 "tx busy\n");
2435                 return NETDEV_TX_BUSY;
2436         }
2437
2438         ptpd = ATL1_TPD_DESC(tpd_ring,
2439                 (u16) atomic_read(&tpd_ring->next_to_use));
2440         memset(ptpd, 0, sizeof(struct tx_packet_desc));
2441
2442         if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
2443                 vlan_tag = vlan_tx_tag_get(skb);
2444                 vlan_tag = (vlan_tag << 4) | (vlan_tag >> 13) |
2445                         ((vlan_tag >> 9) & 0x8);
2446                 ptpd->word3 |= 1 << TPD_INS_VL_TAG_SHIFT;
2447                 ptpd->word3 |= (vlan_tag & TPD_VL_TAGGED_MASK) <<
2448                         TPD_VL_TAGGED_SHIFT;
2449         }
2450
2451         tso = atl1_tso(adapter, skb, ptpd);
2452         if (tso < 0) {
2453                 spin_unlock_irqrestore(&adapter->lock, flags);
2454                 dev_kfree_skb_any(skb);
2455                 return NETDEV_TX_OK;
2456         }
2457
2458         if (!tso) {
2459                 ret_val = atl1_tx_csum(adapter, skb, ptpd);
2460                 if (ret_val < 0) {
2461                         spin_unlock_irqrestore(&adapter->lock, flags);
2462                         dev_kfree_skb_any(skb);
2463                         return NETDEV_TX_OK;
2464                 }
2465         }
2466
2467         atl1_tx_map(adapter, skb, ptpd);
2468         atl1_tx_queue(adapter, count, ptpd);
2469         atl1_update_mailbox(adapter);
2470         spin_unlock_irqrestore(&adapter->lock, flags);
2471         netdev->trans_start = jiffies;
2472         return NETDEV_TX_OK;
2473 }
2474
2475 /*
2476  * atl1_intr - Interrupt Handler
2477  * @irq: interrupt number
2478  * @data: pointer to a network interface device structure
2479  * @pt_regs: CPU registers structure
2480  */
2481 static irqreturn_t atl1_intr(int irq, void *data)
2482 {
2483         struct atl1_adapter *adapter = netdev_priv(data);
2484         u32 status;
2485         int max_ints = 10;
2486
2487         status = adapter->cmb.cmb->int_stats;
2488         if (!status)
2489                 return IRQ_NONE;
2490
2491         do {
2492                 /* clear CMB interrupt status at once */
2493                 adapter->cmb.cmb->int_stats = 0;
2494
2495                 if (status & ISR_GPHY)  /* clear phy status */
2496                         atlx_clear_phy_int(adapter);
2497
2498                 /* clear ISR status, and Enable CMB DMA/Disable Interrupt */
2499                 iowrite32(status | ISR_DIS_INT, adapter->hw.hw_addr + REG_ISR);
2500
2501                 /* check if SMB intr */
2502                 if (status & ISR_SMB)
2503                         atl1_inc_smb(adapter);
2504
2505                 /* check if PCIE PHY Link down */
2506                 if (status & ISR_PHY_LINKDOWN) {
2507                         if (netif_msg_intr(adapter))
2508                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2509                                         "pcie phy link down %x\n", status);
2510                         if (netif_running(adapter->netdev)) {   /* reset MAC */
2511                                 iowrite32(0, adapter->hw.hw_addr + REG_IMR);
2512                                 schedule_work(&adapter->pcie_dma_to_rst_task);
2513                                 return IRQ_HANDLED;
2514                         }
2515                 }
2516
2517                 /* check if DMA read/write error ? */
2518                 if (status & (ISR_DMAR_TO_RST | ISR_DMAW_TO_RST)) {
2519                         if (netif_msg_intr(adapter))
2520                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2521                                         "pcie DMA r/w error (status = 0x%x)\n",
2522                                         status);
2523                         iowrite32(0, adapter->hw.hw_addr + REG_IMR);
2524                         schedule_work(&adapter->pcie_dma_to_rst_task);
2525                         return IRQ_HANDLED;
2526                 }
2527
2528                 /* link event */
2529                 if (status & ISR_GPHY) {
2530                         adapter->soft_stats.tx_carrier_errors++;
2531                         atl1_check_for_link(adapter);
2532                 }
2533
2534                 /* transmit event */
2535                 if (status & ISR_CMB_TX)
2536                         atl1_intr_tx(adapter);
2537
2538                 /* rx exception */
2539                 if (unlikely(status & (ISR_RXF_OV | ISR_RFD_UNRUN |
2540                         ISR_RRD_OV | ISR_HOST_RFD_UNRUN |
2541                         ISR_HOST_RRD_OV | ISR_CMB_RX))) {
2542                         if (status & (ISR_RXF_OV | ISR_RFD_UNRUN |
2543                                 ISR_RRD_OV | ISR_HOST_RFD_UNRUN |
2544                                 ISR_HOST_RRD_OV))
2545                                 if (netif_msg_intr(adapter))
2546                                         dev_printk(KERN_DEBUG,
2547                                                 &adapter->pdev->dev,
2548                                                 "rx exception, ISR = 0x%x\n",
2549                                                 status);
2550                         atl1_intr_rx(adapter);
2551                 }
2552
2553                 if (--max_ints < 0)
2554                         break;
2555
2556         } while ((status = adapter->cmb.cmb->int_stats));
2557
2558         /* re-enable Interrupt */
2559         iowrite32(ISR_DIS_SMB | ISR_DIS_DMA, adapter->hw.hw_addr + REG_ISR);
2560         return IRQ_HANDLED;
2561 }
2562
2563 /*
2564  * atl1_watchdog - Timer Call-back
2565  * @data: pointer to netdev cast into an unsigned long
2566  */
2567 static void atl1_watchdog(unsigned long data)
2568 {
2569         struct atl1_adapter *adapter = (struct atl1_adapter *)data;
2570
2571         /* Reset the timer */
2572         mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
2573 }
2574
2575 /*
2576  * atl1_phy_config - Timer Call-back
2577  * @data: pointer to netdev cast into an unsigned long
2578  */
2579 static void atl1_phy_config(unsigned long data)
2580 {
2581         struct atl1_adapter *adapter = (struct atl1_adapter *)data;
2582         struct atl1_hw *hw = &adapter->hw;
2583         unsigned long flags;
2584
2585         spin_lock_irqsave(&adapter->lock, flags);
2586         adapter->phy_timer_pending = false;
2587         atl1_write_phy_reg(hw, MII_ADVERTISE, hw->mii_autoneg_adv_reg);
2588         atl1_write_phy_reg(hw, MII_ATLX_CR, hw->mii_1000t_ctrl_reg);
2589         atl1_write_phy_reg(hw, MII_BMCR, MII_CR_RESET | MII_CR_AUTO_NEG_EN);
2590         spin_unlock_irqrestore(&adapter->lock, flags);
2591 }
2592
2593 /*
2594  * Orphaned vendor comment left intact here:
2595  * <vendor comment>
2596  * If TPD Buffer size equal to 0, PCIE DMAR_TO_INT
2597  * will assert. We do soft reset <0x1400=1> according
2598  * with the SPEC. BUT, it seemes that PCIE or DMA
2599  * state-machine will not be reset. DMAR_TO_INT will
2600  * assert again and again.
2601  * </vendor comment>
2602  */
2603
2604 static int atl1_reset(struct atl1_adapter *adapter)
2605 {
2606         int ret;
2607         ret = atl1_reset_hw(&adapter->hw);
2608         if (ret)
2609                 return ret;
2610         return atl1_init_hw(&adapter->hw);
2611 }
2612
2613 static s32 atl1_up(struct atl1_adapter *adapter)
2614 {
2615         struct net_device *netdev = adapter->netdev;
2616         int err;
2617         int irq_flags = IRQF_SAMPLE_RANDOM;
2618
2619         /* hardware has been reset, we need to reload some things */
2620         atlx_set_multi(netdev);
2621         atl1_init_ring_ptrs(adapter);
2622         atlx_restore_vlan(adapter);
2623         err = atl1_alloc_rx_buffers(adapter);
2624         if (unlikely(!err))
2625                 /* no RX BUFFER allocated */
2626                 return -ENOMEM;
2627
2628         if (unlikely(atl1_configure(adapter))) {
2629                 err = -EIO;
2630                 goto err_up;
2631         }
2632
2633         err = pci_enable_msi(adapter->pdev);
2634         if (err) {
2635                 if (netif_msg_ifup(adapter))
2636                         dev_info(&adapter->pdev->dev,
2637                                 "Unable to enable MSI: %d\n", err);
2638                 irq_flags |= IRQF_SHARED;
2639         }
2640
2641         err = request_irq(adapter->pdev->irq, &atl1_intr, irq_flags,
2642                         netdev->name, netdev);
2643         if (unlikely(err))
2644                 goto err_up;
2645
2646         mod_timer(&adapter->watchdog_timer, jiffies);
2647         atlx_irq_enable(adapter);
2648         atl1_check_link(adapter);
2649         return 0;
2650
2651 err_up:
2652         pci_disable_msi(adapter->pdev);
2653         /* free rx_buffers */
2654         atl1_clean_rx_ring(adapter);
2655         return err;
2656 }
2657
2658 static void atl1_down(struct atl1_adapter *adapter)
2659 {
2660         struct net_device *netdev = adapter->netdev;
2661
2662         del_timer_sync(&adapter->watchdog_timer);
2663         del_timer_sync(&adapter->phy_config_timer);
2664         adapter->phy_timer_pending = false;
2665
2666         atlx_irq_disable(adapter);
2667         free_irq(adapter->pdev->irq, netdev);
2668         pci_disable_msi(adapter->pdev);
2669         atl1_reset_hw(&adapter->hw);
2670         adapter->cmb.cmb->int_stats = 0;
2671
2672         adapter->link_speed = SPEED_0;
2673         adapter->link_duplex = -1;
2674         netif_carrier_off(netdev);
2675         netif_stop_queue(netdev);
2676
2677         atl1_clean_tx_ring(adapter);
2678         atl1_clean_rx_ring(adapter);
2679 }
2680
2681 static void atl1_tx_timeout_task(struct work_struct *work)
2682 {
2683         struct atl1_adapter *adapter =
2684                 container_of(work, struct atl1_adapter, tx_timeout_task);
2685         struct net_device *netdev = adapter->netdev;
2686
2687         netif_device_detach(netdev);
2688         atl1_down(adapter);
2689         atl1_up(adapter);
2690         netif_device_attach(netdev);
2691 }
2692
2693 /*
2694  * atl1_change_mtu - Change the Maximum Transfer Unit
2695  * @netdev: network interface device structure
2696  * @new_mtu: new value for maximum frame size
2697  *
2698  * Returns 0 on success, negative on failure
2699  */
2700 static int atl1_change_mtu(struct net_device *netdev, int new_mtu)
2701 {
2702         struct atl1_adapter *adapter = netdev_priv(netdev);
2703         int old_mtu = netdev->mtu;
2704         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2705
2706         if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) ||
2707             (max_frame > MAX_JUMBO_FRAME_SIZE)) {
2708                 if (netif_msg_link(adapter))
2709                         dev_warn(&adapter->pdev->dev, "invalid MTU setting\n");
2710                 return -EINVAL;
2711         }
2712
2713         adapter->hw.max_frame_size = max_frame;
2714         adapter->hw.tx_jumbo_task_th = (max_frame + 7) >> 3;
2715         adapter->rx_buffer_len = (max_frame + 7) & ~7;
2716         adapter->hw.rx_jumbo_th = adapter->rx_buffer_len / 8;
2717
2718         netdev->mtu = new_mtu;
2719         if ((old_mtu != new_mtu) && netif_running(netdev)) {
2720                 atl1_down(adapter);
2721                 atl1_up(adapter);
2722         }
2723
2724         return 0;
2725 }
2726
2727 /*
2728  * atl1_open - Called when a network interface is made active
2729  * @netdev: network interface device structure
2730  *
2731  * Returns 0 on success, negative value on failure
2732  *
2733  * The open entry point is called when a network interface is made
2734  * active by the system (IFF_UP).  At this point all resources needed
2735  * for transmit and receive operations are allocated, the interrupt
2736  * handler is registered with the OS, the watchdog timer is started,
2737  * and the stack is notified that the interface is ready.
2738  */
2739 static int atl1_open(struct net_device *netdev)
2740 {
2741         struct atl1_adapter *adapter = netdev_priv(netdev);
2742         int err;
2743
2744         /* allocate transmit descriptors */
2745         err = atl1_setup_ring_resources(adapter);
2746         if (err)
2747                 return err;
2748
2749         err = atl1_up(adapter);
2750         if (err)
2751                 goto err_up;
2752
2753         return 0;
2754
2755 err_up:
2756         atl1_reset(adapter);
2757         return err;
2758 }
2759
2760 /*
2761  * atl1_close - Disables a network interface
2762  * @netdev: network interface device structure
2763  *
2764  * Returns 0, this is not allowed to fail
2765  *
2766  * The close entry point is called when an interface is de-activated
2767  * by the OS.  The hardware is still under the drivers control, but
2768  * needs to be disabled.  A global MAC reset is issued to stop the
2769  * hardware, and all transmit and receive resources are freed.
2770  */
2771 static int atl1_close(struct net_device *netdev)
2772 {
2773         struct atl1_adapter *adapter = netdev_priv(netdev);
2774         atl1_down(adapter);
2775         atl1_free_ring_resources(adapter);
2776         return 0;
2777 }
2778
2779 #ifdef CONFIG_PM
2780 static int atl1_suspend(struct pci_dev *pdev, pm_message_t state)
2781 {
2782         struct net_device *netdev = pci_get_drvdata(pdev);
2783         struct atl1_adapter *adapter = netdev_priv(netdev);
2784         struct atl1_hw *hw = &adapter->hw;
2785         u32 ctrl = 0;
2786         u32 wufc = adapter->wol;
2787
2788         netif_device_detach(netdev);
2789         if (netif_running(netdev))
2790                 atl1_down(adapter);
2791
2792         atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl);
2793         atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl);
2794         if (ctrl & BMSR_LSTATUS)
2795                 wufc &= ~ATLX_WUFC_LNKC;
2796
2797         /* reduce speed to 10/100M */
2798         if (wufc) {
2799                 atl1_phy_enter_power_saving(hw);
2800                 /* if resume, let driver to re- setup link */
2801                 hw->phy_configured = false;
2802                 atl1_set_mac_addr(hw);
2803                 atlx_set_multi(netdev);
2804
2805                 ctrl = 0;
2806                 /* turn on magic packet wol */
2807                 if (wufc & ATLX_WUFC_MAG)
2808                         ctrl = WOL_MAGIC_EN | WOL_MAGIC_PME_EN;
2809
2810                 /* turn on Link change WOL */
2811                 if (wufc & ATLX_WUFC_LNKC)
2812                         ctrl |= (WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN);
2813                 iowrite32(ctrl, hw->hw_addr + REG_WOL_CTRL);
2814
2815                 /* turn on all-multi mode if wake on multicast is enabled */
2816                 ctrl = ioread32(hw->hw_addr + REG_MAC_CTRL);
2817                 ctrl &= ~MAC_CTRL_DBG;
2818                 ctrl &= ~MAC_CTRL_PROMIS_EN;
2819                 if (wufc & ATLX_WUFC_MC)
2820                         ctrl |= MAC_CTRL_MC_ALL_EN;
2821                 else
2822                         ctrl &= ~MAC_CTRL_MC_ALL_EN;
2823
2824                 /* turn on broadcast mode if wake on-BC is enabled */
2825                 if (wufc & ATLX_WUFC_BC)
2826                         ctrl |= MAC_CTRL_BC_EN;
2827                 else
2828                         ctrl &= ~MAC_CTRL_BC_EN;
2829
2830                 /* enable RX */
2831                 ctrl |= MAC_CTRL_RX_EN;
2832                 iowrite32(ctrl, hw->hw_addr + REG_MAC_CTRL);
2833                 pci_enable_wake(pdev, PCI_D3hot, 1);
2834                 pci_enable_wake(pdev, PCI_D3cold, 1);
2835         } else {
2836                 iowrite32(0, hw->hw_addr + REG_WOL_CTRL);
2837                 pci_enable_wake(pdev, PCI_D3hot, 0);
2838                 pci_enable_wake(pdev, PCI_D3cold, 0);
2839         }
2840
2841         pci_save_state(pdev);
2842         pci_disable_device(pdev);
2843
2844         pci_set_power_state(pdev, PCI_D3hot);
2845
2846         return 0;
2847 }
2848
2849 static int atl1_resume(struct pci_dev *pdev)
2850 {
2851         struct net_device *netdev = pci_get_drvdata(pdev);
2852         struct atl1_adapter *adapter = netdev_priv(netdev);
2853         u32 err;
2854
2855         pci_set_power_state(pdev, PCI_D0);
2856         pci_restore_state(pdev);
2857
2858         /* FIXME: check and handle */
2859         err = pci_enable_device(pdev);
2860         pci_enable_wake(pdev, PCI_D3hot, 0);
2861         pci_enable_wake(pdev, PCI_D3cold, 0);
2862
2863         iowrite32(0, adapter->hw.hw_addr + REG_WOL_CTRL);
2864         atl1_reset(adapter);
2865
2866         if (netif_running(netdev))
2867                 atl1_up(adapter);
2868         netif_device_attach(netdev);
2869
2870         atl1_via_workaround(adapter);
2871
2872         return 0;
2873 }
2874 #else
2875 #define atl1_suspend NULL
2876 #define atl1_resume NULL
2877 #endif
2878
2879 #ifdef CONFIG_NET_POLL_CONTROLLER
2880 static void atl1_poll_controller(struct net_device *netdev)
2881 {
2882         disable_irq(netdev->irq);
2883         atl1_intr(netdev->irq, netdev);
2884         enable_irq(netdev->irq);
2885 }
2886 #endif
2887
2888 /*
2889  * atl1_probe - Device Initialization Routine
2890  * @pdev: PCI device information struct
2891  * @ent: entry in atl1_pci_tbl
2892  *
2893  * Returns 0 on success, negative on failure
2894  *
2895  * atl1_probe initializes an adapter identified by a pci_dev structure.
2896  * The OS initialization, configuring of the adapter private structure,
2897  * and a hardware reset occur.
2898  */
2899 static int __devinit atl1_probe(struct pci_dev *pdev,
2900         const struct pci_device_id *ent)
2901 {
2902         struct net_device *netdev;
2903         struct atl1_adapter *adapter;
2904         static int cards_found = 0;
2905         int err;
2906
2907         err = pci_enable_device(pdev);
2908         if (err)
2909                 return err;
2910
2911         /*
2912          * The atl1 chip can DMA to 64-bit addresses, but it uses a single
2913          * shared register for the high 32 bits, so only a single, aligned,
2914          * 4 GB physical address range can be used at a time.
2915          *
2916          * Supporting 64-bit DMA on this hardware is more trouble than it's
2917          * worth.  It is far easier to limit to 32-bit DMA than update
2918          * various kernel subsystems to support the mechanics required by a
2919          * fixed-high-32-bit system.
2920          */
2921         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2922         if (err) {
2923                 dev_err(&pdev->dev, "no usable DMA configuration\n");
2924                 goto err_dma;
2925         }
2926         /*
2927          * Mark all PCI regions associated with PCI device
2928          * pdev as being reserved by owner atl1_driver_name
2929          */
2930         err = pci_request_regions(pdev, ATLX_DRIVER_NAME);
2931         if (err)
2932                 goto err_request_regions;
2933
2934         /*
2935          * Enables bus-mastering on the device and calls
2936          * pcibios_set_master to do the needed arch specific settings
2937          */
2938         pci_set_master(pdev);
2939
2940         netdev = alloc_etherdev(sizeof(struct atl1_adapter));
2941         if (!netdev) {
2942                 err = -ENOMEM;
2943                 goto err_alloc_etherdev;
2944         }
2945         SET_NETDEV_DEV(netdev, &pdev->dev);
2946
2947         pci_set_drvdata(pdev, netdev);
2948         adapter = netdev_priv(netdev);
2949         adapter->netdev = netdev;
2950         adapter->pdev = pdev;
2951         adapter->hw.back = adapter;
2952         adapter->msg_enable = netif_msg_init(debug, atl1_default_msg);
2953
2954         adapter->hw.hw_addr = pci_iomap(pdev, 0, 0);
2955         if (!adapter->hw.hw_addr) {
2956                 err = -EIO;
2957                 goto err_pci_iomap;
2958         }
2959         /* get device revision number */
2960         adapter->hw.dev_rev = ioread16(adapter->hw.hw_addr +
2961                 (REG_MASTER_CTRL + 2));
2962         if (netif_msg_probe(adapter))
2963                 dev_info(&pdev->dev, "version %s\n", ATLX_DRIVER_VERSION);
2964
2965         /* set default ring resource counts */
2966         adapter->rfd_ring.count = adapter->rrd_ring.count = ATL1_DEFAULT_RFD;
2967         adapter->tpd_ring.count = ATL1_DEFAULT_TPD;
2968
2969         adapter->mii.dev = netdev;
2970         adapter->mii.mdio_read = mdio_read;
2971         adapter->mii.mdio_write = mdio_write;
2972         adapter->mii.phy_id_mask = 0x1f;
2973         adapter->mii.reg_num_mask = 0x1f;
2974
2975         netdev->open = &atl1_open;
2976         netdev->stop = &atl1_close;
2977         netdev->hard_start_xmit = &atl1_xmit_frame;
2978         netdev->get_stats = &atlx_get_stats;
2979         netdev->set_multicast_list = &atlx_set_multi;
2980         netdev->set_mac_address = &atl1_set_mac;
2981         netdev->change_mtu = &atl1_change_mtu;
2982         netdev->do_ioctl = &atlx_ioctl;
2983         netdev->tx_timeout = &atlx_tx_timeout;
2984         netdev->watchdog_timeo = 5 * HZ;
2985 #ifdef CONFIG_NET_POLL_CONTROLLER
2986         netdev->poll_controller = atl1_poll_controller;
2987 #endif
2988         netdev->vlan_rx_register = atlx_vlan_rx_register;
2989
2990         netdev->ethtool_ops = &atl1_ethtool_ops;
2991         adapter->bd_number = cards_found;
2992
2993         /* setup the private structure */
2994         err = atl1_sw_init(adapter);
2995         if (err)
2996                 goto err_common;
2997
2998         netdev->features = NETIF_F_HW_CSUM;
2999         netdev->features |= NETIF_F_SG;
3000         netdev->features |= (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX);
3001         netdev->features |= NETIF_F_TSO;
3002         netdev->features |= NETIF_F_LLTX;
3003
3004         /*
3005          * patch for some L1 of old version,
3006          * the final version of L1 may not need these
3007          * patches
3008          */
3009         /* atl1_pcie_patch(adapter); */
3010
3011         /* really reset GPHY core */
3012         iowrite16(0, adapter->hw.hw_addr + REG_PHY_ENABLE);
3013
3014         /*
3015          * reset the controller to
3016          * put the device in a known good starting state
3017          */
3018         if (atl1_reset_hw(&adapter->hw)) {
3019                 err = -EIO;
3020                 goto err_common;
3021         }
3022
3023         /* copy the MAC address out of the EEPROM */
3024         atl1_read_mac_addr(&adapter->hw);
3025         memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
3026
3027         if (!is_valid_ether_addr(netdev->dev_addr)) {
3028                 err = -EIO;
3029                 goto err_common;
3030         }
3031
3032         atl1_check_options(adapter);
3033
3034         /* pre-init the MAC, and setup link */
3035         err = atl1_init_hw(&adapter->hw);
3036         if (err) {
3037                 err = -EIO;
3038                 goto err_common;
3039         }
3040
3041         atl1_pcie_patch(adapter);
3042         /* assume we have no link for now */
3043         netif_carrier_off(netdev);
3044         netif_stop_queue(netdev);
3045
3046         init_timer(&adapter->watchdog_timer);
3047         adapter->watchdog_timer.function = &atl1_watchdog;
3048         adapter->watchdog_timer.data = (unsigned long)adapter;
3049
3050         init_timer(&adapter->phy_config_timer);
3051         adapter->phy_config_timer.function = &atl1_phy_config;
3052         adapter->phy_config_timer.data = (unsigned long)adapter;
3053         adapter->phy_timer_pending = false;
3054
3055         INIT_WORK(&adapter->tx_timeout_task, atl1_tx_timeout_task);
3056
3057         INIT_WORK(&adapter->link_chg_task, atlx_link_chg_task);
3058
3059         INIT_WORK(&adapter->pcie_dma_to_rst_task, atl1_tx_timeout_task);
3060
3061         err = register_netdev(netdev);
3062         if (err)
3063                 goto err_common;
3064
3065         cards_found++;
3066         atl1_via_workaround(adapter);
3067         return 0;
3068
3069 err_common:
3070         pci_iounmap(pdev, adapter->hw.hw_addr);
3071 err_pci_iomap:
3072         free_netdev(netdev);
3073 err_alloc_etherdev:
3074         pci_release_regions(pdev);
3075 err_dma:
3076 err_request_regions:
3077         pci_disable_device(pdev);
3078         return err;
3079 }
3080
3081 /*
3082  * atl1_remove - Device Removal Routine
3083  * @pdev: PCI device information struct
3084  *
3085  * atl1_remove is called by the PCI subsystem to alert the driver
3086  * that it should release a PCI device.  The could be caused by a
3087  * Hot-Plug event, or because the driver is going to be removed from
3088  * memory.
3089  */
3090 static void __devexit atl1_remove(struct pci_dev *pdev)
3091 {
3092         struct net_device *netdev = pci_get_drvdata(pdev);
3093         struct atl1_adapter *adapter;
3094         /* Device not available. Return. */
3095         if (!netdev)
3096                 return;
3097
3098         adapter = netdev_priv(netdev);
3099
3100         /*
3101          * Some atl1 boards lack persistent storage for their MAC, and get it
3102          * from the BIOS during POST.  If we've been messing with the MAC
3103          * address, we need to save the permanent one.
3104          */
3105         if (memcmp(adapter->hw.mac_addr, adapter->hw.perm_mac_addr, ETH_ALEN)) {
3106                 memcpy(adapter->hw.mac_addr, adapter->hw.perm_mac_addr,
3107                         ETH_ALEN);
3108                 atl1_set_mac_addr(&adapter->hw);
3109         }
3110
3111         iowrite16(0, adapter->hw.hw_addr + REG_PHY_ENABLE);
3112         unregister_netdev(netdev);
3113         pci_iounmap(pdev, adapter->hw.hw_addr);
3114         pci_release_regions(pdev);
3115         free_netdev(netdev);
3116         pci_disable_device(pdev);
3117 }
3118
3119 static struct pci_driver atl1_driver = {
3120         .name = ATLX_DRIVER_NAME,
3121         .id_table = atl1_pci_tbl,
3122         .probe = atl1_probe,
3123         .remove = __devexit_p(atl1_remove),
3124         .suspend = atl1_suspend,
3125         .resume = atl1_resume
3126 };
3127
3128 /*
3129  * atl1_exit_module - Driver Exit Cleanup Routine
3130  *
3131  * atl1_exit_module is called just before the driver is removed
3132  * from memory.
3133  */
3134 static void __exit atl1_exit_module(void)
3135 {
3136         pci_unregister_driver(&atl1_driver);
3137 }
3138
3139 /*
3140  * atl1_init_module - Driver Registration Routine
3141  *
3142  * atl1_init_module is the first routine called when the driver is
3143  * loaded. All it does is register with the PCI subsystem.
3144  */
3145 static int __init atl1_init_module(void)
3146 {
3147         return pci_register_driver(&atl1_driver);
3148 }
3149
3150 module_init(atl1_init_module);
3151 module_exit(atl1_exit_module);
3152
3153 struct atl1_stats {
3154         char stat_string[ETH_GSTRING_LEN];
3155         int sizeof_stat;
3156         int stat_offset;
3157 };
3158
3159 #define ATL1_STAT(m) \
3160         sizeof(((struct atl1_adapter *)0)->m), offsetof(struct atl1_adapter, m)
3161
3162 static struct atl1_stats atl1_gstrings_stats[] = {
3163         {"rx_packets", ATL1_STAT(soft_stats.rx_packets)},
3164         {"tx_packets", ATL1_STAT(soft_stats.tx_packets)},
3165         {"rx_bytes", ATL1_STAT(soft_stats.rx_bytes)},
3166         {"tx_bytes", ATL1_STAT(soft_stats.tx_bytes)},
3167         {"rx_errors", ATL1_STAT(soft_stats.rx_errors)},
3168         {"tx_errors", ATL1_STAT(soft_stats.tx_errors)},
3169         {"rx_dropped", ATL1_STAT(net_stats.rx_dropped)},
3170         {"tx_dropped", ATL1_STAT(net_stats.tx_dropped)},
3171         {"multicast", ATL1_STAT(soft_stats.multicast)},
3172         {"collisions", ATL1_STAT(soft_stats.collisions)},
3173         {"rx_length_errors", ATL1_STAT(soft_stats.rx_length_errors)},
3174         {"rx_over_errors", ATL1_STAT(soft_stats.rx_missed_errors)},
3175         {"rx_crc_errors", ATL1_STAT(soft_stats.rx_crc_errors)},
3176         {"rx_frame_errors", ATL1_STAT(soft_stats.rx_frame_errors)},
3177         {"rx_fifo_errors", ATL1_STAT(soft_stats.rx_fifo_errors)},
3178         {"rx_missed_errors", ATL1_STAT(soft_stats.rx_missed_errors)},
3179         {"tx_aborted_errors", ATL1_STAT(soft_stats.tx_aborted_errors)},
3180         {"tx_carrier_errors", ATL1_STAT(soft_stats.tx_carrier_errors)},
3181         {"tx_fifo_errors", ATL1_STAT(soft_stats.tx_fifo_errors)},
3182         {"tx_window_errors", ATL1_STAT(soft_stats.tx_window_errors)},
3183         {"tx_abort_exce_coll", ATL1_STAT(soft_stats.excecol)},
3184         {"tx_abort_late_coll", ATL1_STAT(soft_stats.latecol)},
3185         {"tx_deferred_ok", ATL1_STAT(soft_stats.deffer)},
3186         {"tx_single_coll_ok", ATL1_STAT(soft_stats.scc)},
3187         {"tx_multi_coll_ok", ATL1_STAT(soft_stats.mcc)},
3188         {"tx_underun", ATL1_STAT(soft_stats.tx_underun)},
3189         {"tx_trunc", ATL1_STAT(soft_stats.tx_trunc)},
3190         {"tx_pause", ATL1_STAT(soft_stats.tx_pause)},
3191         {"rx_pause", ATL1_STAT(soft_stats.rx_pause)},
3192         {"rx_rrd_ov", ATL1_STAT(soft_stats.rx_rrd_ov)},
3193         {"rx_trunc", ATL1_STAT(soft_stats.rx_trunc)}
3194 };
3195
3196 static void atl1_get_ethtool_stats(struct net_device *netdev,
3197         struct ethtool_stats *stats, u64 *data)
3198 {
3199         struct atl1_adapter *adapter = netdev_priv(netdev);
3200         int i;
3201         char *p;
3202
3203         for (i = 0; i < ARRAY_SIZE(atl1_gstrings_stats); i++) {
3204                 p = (char *)adapter+atl1_gstrings_stats[i].stat_offset;
3205                 data[i] = (atl1_gstrings_stats[i].sizeof_stat ==
3206                         sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
3207         }
3208
3209 }
3210
3211 static int atl1_get_sset_count(struct net_device *netdev, int sset)
3212 {
3213         switch (sset) {
3214         case ETH_SS_STATS:
3215                 return ARRAY_SIZE(atl1_gstrings_stats);
3216         default:
3217                 return -EOPNOTSUPP;
3218         }
3219 }
3220
3221 static int atl1_get_settings(struct net_device *netdev,
3222         struct ethtool_cmd *ecmd)
3223 {
3224         struct atl1_adapter *adapter = netdev_priv(netdev);
3225         struct atl1_hw *hw = &adapter->hw;
3226
3227         ecmd->supported = (SUPPORTED_10baseT_Half |
3228                            SUPPORTED_10baseT_Full |
3229                            SUPPORTED_100baseT_Half |
3230                            SUPPORTED_100baseT_Full |
3231                            SUPPORTED_1000baseT_Full |
3232                            SUPPORTED_Autoneg | SUPPORTED_TP);
3233         ecmd->advertising = ADVERTISED_TP;
3234         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3235             hw->media_type == MEDIA_TYPE_1000M_FULL) {
3236                 ecmd->advertising |= ADVERTISED_Autoneg;
3237                 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR) {
3238                         ecmd->advertising |= ADVERTISED_Autoneg;
3239                         ecmd->advertising |=
3240                             (ADVERTISED_10baseT_Half |
3241                              ADVERTISED_10baseT_Full |
3242                              ADVERTISED_100baseT_Half |
3243                              ADVERTISED_100baseT_Full |
3244                              ADVERTISED_1000baseT_Full);
3245                 } else
3246                         ecmd->advertising |= (ADVERTISED_1000baseT_Full);
3247         }
3248         ecmd->port = PORT_TP;
3249         ecmd->phy_address = 0;
3250         ecmd->transceiver = XCVR_INTERNAL;
3251
3252         if (netif_carrier_ok(adapter->netdev)) {
3253                 u16 link_speed, link_duplex;
3254                 atl1_get_speed_and_duplex(hw, &link_speed, &link_duplex);
3255                 ecmd->speed = link_speed;
3256                 if (link_duplex == FULL_DUPLEX)
3257                         ecmd->duplex = DUPLEX_FULL;
3258                 else
3259                         ecmd->duplex = DUPLEX_HALF;
3260         } else {
3261                 ecmd->speed = -1;
3262                 ecmd->duplex = -1;
3263         }
3264         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3265             hw->media_type == MEDIA_TYPE_1000M_FULL)
3266                 ecmd->autoneg = AUTONEG_ENABLE;
3267         else
3268                 ecmd->autoneg = AUTONEG_DISABLE;
3269
3270         return 0;
3271 }
3272
3273 static int atl1_set_settings(struct net_device *netdev,
3274         struct ethtool_cmd *ecmd)
3275 {
3276         struct atl1_adapter *adapter = netdev_priv(netdev);
3277         struct atl1_hw *hw = &adapter->hw;
3278         u16 phy_data;
3279         int ret_val = 0;
3280         u16 old_media_type = hw->media_type;
3281
3282         if (netif_running(adapter->netdev)) {
3283                 if (netif_msg_link(adapter))
3284                         dev_dbg(&adapter->pdev->dev,
3285                                 "ethtool shutting down adapter\n");
3286                 atl1_down(adapter);
3287         }
3288
3289         if (ecmd->autoneg == AUTONEG_ENABLE)
3290                 hw->media_type = MEDIA_TYPE_AUTO_SENSOR;
3291         else {
3292                 if (ecmd->speed == SPEED_1000) {
3293                         if (ecmd->duplex != DUPLEX_FULL) {
3294                                 if (netif_msg_link(adapter))
3295                                         dev_warn(&adapter->pdev->dev,
3296                                                 "1000M half is invalid\n");
3297                                 ret_val = -EINVAL;
3298                                 goto exit_sset;
3299                         }
3300                         hw->media_type = MEDIA_TYPE_1000M_FULL;
3301                 } else if (ecmd->speed == SPEED_100) {
3302                         if (ecmd->duplex == DUPLEX_FULL)
3303                                 hw->media_type = MEDIA_TYPE_100M_FULL;
3304                         else
3305                                 hw->media_type = MEDIA_TYPE_100M_HALF;
3306                 } else {
3307                         if (ecmd->duplex == DUPLEX_FULL)
3308                                 hw->media_type = MEDIA_TYPE_10M_FULL;
3309                         else
3310                                 hw->media_type = MEDIA_TYPE_10M_HALF;
3311                 }
3312         }
3313         switch (hw->media_type) {
3314         case MEDIA_TYPE_AUTO_SENSOR:
3315                 ecmd->advertising =
3316                     ADVERTISED_10baseT_Half |
3317                     ADVERTISED_10baseT_Full |
3318                     ADVERTISED_100baseT_Half |
3319                     ADVERTISED_100baseT_Full |
3320                     ADVERTISED_1000baseT_Full |
3321                     ADVERTISED_Autoneg | ADVERTISED_TP;
3322                 break;
3323         case MEDIA_TYPE_1000M_FULL:
3324                 ecmd->advertising =
3325                     ADVERTISED_1000baseT_Full |
3326                     ADVERTISED_Autoneg | ADVERTISED_TP;
3327                 break;
3328         default:
3329                 ecmd->advertising = 0;
3330                 break;
3331         }
3332         if (atl1_phy_setup_autoneg_adv(hw)) {
3333                 ret_val = -EINVAL;
3334                 if (netif_msg_link(adapter))
3335                         dev_warn(&adapter->pdev->dev,
3336                                 "invalid ethtool speed/duplex setting\n");
3337                 goto exit_sset;
3338         }
3339         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3340             hw->media_type == MEDIA_TYPE_1000M_FULL)
3341                 phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN;
3342         else {
3343                 switch (hw->media_type) {
3344                 case MEDIA_TYPE_100M_FULL:
3345                         phy_data =
3346                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
3347                             MII_CR_RESET;
3348                         break;
3349                 case MEDIA_TYPE_100M_HALF:
3350                         phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
3351                         break;
3352                 case MEDIA_TYPE_10M_FULL:
3353                         phy_data =
3354                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
3355                         break;
3356                 default:
3357                         /* MEDIA_TYPE_10M_HALF: */
3358                         phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
3359                         break;
3360                 }
3361         }
3362         atl1_write_phy_reg(hw, MII_BMCR, phy_data);
3363 exit_sset:
3364         if (ret_val)
3365                 hw->media_type = old_media_type;
3366
3367         if (netif_running(adapter->netdev)) {
3368                 if (netif_msg_link(adapter))
3369                         dev_dbg(&adapter->pdev->dev,
3370                                 "ethtool starting adapter\n");
3371                 atl1_up(adapter);
3372         } else if (!ret_val) {
3373                 if (netif_msg_link(adapter))
3374                         dev_dbg(&adapter->pdev->dev,
3375                                 "ethtool resetting adapter\n");
3376                 atl1_reset(adapter);
3377         }
3378         return ret_val;
3379 }
3380
3381 static void atl1_get_drvinfo(struct net_device *netdev,
3382         struct ethtool_drvinfo *drvinfo)
3383 {
3384         struct atl1_adapter *adapter = netdev_priv(netdev);
3385
3386         strncpy(drvinfo->driver, ATLX_DRIVER_NAME, sizeof(drvinfo->driver));
3387         strncpy(drvinfo->version, ATLX_DRIVER_VERSION,
3388                 sizeof(drvinfo->version));
3389         strncpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
3390         strncpy(drvinfo->bus_info, pci_name(adapter->pdev),
3391                 sizeof(drvinfo->bus_info));
3392         drvinfo->eedump_len = ATL1_EEDUMP_LEN;
3393 }
3394
3395 static void atl1_get_wol(struct net_device *netdev,
3396         struct ethtool_wolinfo *wol)
3397 {
3398         struct atl1_adapter *adapter = netdev_priv(netdev);
3399
3400         wol->supported = WAKE_UCAST | WAKE_MCAST | WAKE_BCAST | WAKE_MAGIC;
3401         wol->wolopts = 0;
3402         if (adapter->wol & ATLX_WUFC_EX)
3403                 wol->wolopts |= WAKE_UCAST;
3404         if (adapter->wol & ATLX_WUFC_MC)
3405                 wol->wolopts |= WAKE_MCAST;
3406         if (adapter->wol & ATLX_WUFC_BC)
3407                 wol->wolopts |= WAKE_BCAST;
3408         if (adapter->wol & ATLX_WUFC_MAG)
3409                 wol->wolopts |= WAKE_MAGIC;
3410         return;
3411 }
3412
3413 static int atl1_set_wol(struct net_device *netdev,
3414         struct ethtool_wolinfo *wol)
3415 {
3416         struct atl1_adapter *adapter = netdev_priv(netdev);
3417
3418         if (wol->wolopts & (WAKE_PHY | WAKE_ARP | WAKE_MAGICSECURE))
3419                 return -EOPNOTSUPP;
3420         adapter->wol = 0;
3421         if (wol->wolopts & WAKE_UCAST)
3422                 adapter->wol |= ATLX_WUFC_EX;
3423         if (wol->wolopts & WAKE_MCAST)
3424                 adapter->wol |= ATLX_WUFC_MC;
3425         if (wol->wolopts & WAKE_BCAST)
3426                 adapter->wol |= ATLX_WUFC_BC;
3427         if (wol->wolopts & WAKE_MAGIC)
3428                 adapter->wol |= ATLX_WUFC_MAG;
3429         return 0;
3430 }
3431
3432 static u32 atl1_get_msglevel(struct net_device *netdev)
3433 {
3434         struct atl1_adapter *adapter = netdev_priv(netdev);
3435         return adapter->msg_enable;
3436 }
3437
3438 static void atl1_set_msglevel(struct net_device *netdev, u32 value)
3439 {
3440         struct atl1_adapter *adapter = netdev_priv(netdev);
3441         adapter->msg_enable = value;
3442 }
3443
3444 static int atl1_get_regs_len(struct net_device *netdev)
3445 {
3446         return ATL1_REG_COUNT * sizeof(u32);
3447 }
3448
3449 static void atl1_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
3450         void *p)
3451 {
3452         struct atl1_adapter *adapter = netdev_priv(netdev);
3453         struct atl1_hw *hw = &adapter->hw;
3454         unsigned int i;
3455         u32 *regbuf = p;
3456
3457         for (i = 0; i < ATL1_REG_COUNT; i++) {
3458                 /*
3459                  * This switch statement avoids reserved regions
3460                  * of register space.
3461                  */
3462                 switch (i) {
3463                 case 6 ... 9:
3464                 case 14:
3465                 case 29 ... 31:
3466                 case 34 ... 63:
3467                 case 75 ... 127:
3468                 case 136 ... 1023:
3469                 case 1027 ... 1087:
3470                 case 1091 ... 1151:
3471                 case 1194 ... 1195:
3472                 case 1200 ... 1201:
3473                 case 1206 ... 1213:
3474                 case 1216 ... 1279:
3475                 case 1290 ... 1311:
3476                 case 1323 ... 1343:
3477                 case 1358 ... 1359:
3478                 case 1368 ... 1375:
3479                 case 1378 ... 1383:
3480                 case 1388 ... 1391:
3481                 case 1393 ... 1395:
3482                 case 1402 ... 1403:
3483                 case 1410 ... 1471:
3484                 case 1522 ... 1535:
3485                         /* reserved region; don't read it */
3486                         regbuf[i] = 0;
3487                         break;
3488                 default:
3489                         /* unreserved region */
3490                         regbuf[i] = ioread32(hw->hw_addr + (i * sizeof(u32)));
3491                 }
3492         }
3493 }
3494
3495 static void atl1_get_ringparam(struct net_device *netdev,
3496         struct ethtool_ringparam *ring)
3497 {
3498         struct atl1_adapter *adapter = netdev_priv(netdev);
3499         struct atl1_tpd_ring *txdr = &adapter->tpd_ring;
3500         struct atl1_rfd_ring *rxdr = &adapter->rfd_ring;
3501
3502         ring->rx_max_pending = ATL1_MAX_RFD;
3503         ring->tx_max_pending = ATL1_MAX_TPD;
3504         ring->rx_mini_max_pending = 0;
3505         ring->rx_jumbo_max_pending = 0;
3506         ring->rx_pending = rxdr->count;
3507         ring->tx_pending = txdr->count;
3508         ring->rx_mini_pending = 0;
3509         ring->rx_jumbo_pending = 0;
3510 }
3511
3512 static int atl1_set_ringparam(struct net_device *netdev,
3513         struct ethtool_ringparam *ring)
3514 {
3515         struct atl1_adapter *adapter = netdev_priv(netdev);
3516         struct atl1_tpd_ring *tpdr = &adapter->tpd_ring;
3517         struct atl1_rrd_ring *rrdr = &adapter->rrd_ring;
3518         struct atl1_rfd_ring *rfdr = &adapter->rfd_ring;
3519
3520         struct atl1_tpd_ring tpd_old, tpd_new;
3521         struct atl1_rfd_ring rfd_old, rfd_new;
3522         struct atl1_rrd_ring rrd_old, rrd_new;
3523         struct atl1_ring_header rhdr_old, rhdr_new;
3524         int err;
3525
3526         tpd_old = adapter->tpd_ring;
3527         rfd_old = adapter->rfd_ring;
3528         rrd_old = adapter->rrd_ring;
3529         rhdr_old = adapter->ring_header;
3530
3531         if (netif_running(adapter->netdev))
3532                 atl1_down(adapter);
3533
3534         rfdr->count = (u16) max(ring->rx_pending, (u32) ATL1_MIN_RFD);
3535         rfdr->count = rfdr->count > ATL1_MAX_RFD ? ATL1_MAX_RFD :
3536                         rfdr->count;
3537         rfdr->count = (rfdr->count + 3) & ~3;
3538         rrdr->count = rfdr->count;
3539
3540         tpdr->count = (u16) max(ring->tx_pending, (u32) ATL1_MIN_TPD);
3541         tpdr->count = tpdr->count > ATL1_MAX_TPD ? ATL1_MAX_TPD :
3542                         tpdr->count;
3543         tpdr->count = (tpdr->count + 3) & ~3;
3544
3545         if (netif_running(adapter->netdev)) {
3546                 /* try to get new resources before deleting old */
3547                 err = atl1_setup_ring_resources(adapter);
3548                 if (err)
3549                         goto err_setup_ring;
3550
3551                 /*
3552                  * save the new, restore the old in order to free it,
3553                  * then restore the new back again
3554                  */
3555
3556                 rfd_new = adapter->rfd_ring;
3557                 rrd_new = adapter->rrd_ring;
3558                 tpd_new = adapter->tpd_ring;
3559                 rhdr_new = adapter->ring_header;
3560                 adapter->rfd_ring = rfd_old;
3561                 adapter->rrd_ring = rrd_old;
3562                 adapter->tpd_ring = tpd_old;
3563                 adapter->ring_header = rhdr_old;
3564                 atl1_free_ring_resources(adapter);
3565                 adapter->rfd_ring = rfd_new;
3566                 adapter->rrd_ring = rrd_new;
3567                 adapter->tpd_ring = tpd_new;
3568                 adapter->ring_header = rhdr_new;
3569
3570                 err = atl1_up(adapter);
3571                 if (err)
3572                         return err;
3573         }
3574         return 0;
3575
3576 err_setup_ring:
3577         adapter->rfd_ring = rfd_old;
3578         adapter->rrd_ring = rrd_old;
3579         adapter->tpd_ring = tpd_old;
3580         adapter->ring_header = rhdr_old;
3581         atl1_up(adapter);
3582         return err;
3583 }
3584
3585 static void atl1_get_pauseparam(struct net_device *netdev,
3586         struct ethtool_pauseparam *epause)
3587 {
3588         struct atl1_adapter *adapter = netdev_priv(netdev);
3589         struct atl1_hw *hw = &adapter->hw;
3590
3591         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3592             hw->media_type == MEDIA_TYPE_1000M_FULL) {
3593                 epause->autoneg = AUTONEG_ENABLE;
3594         } else {
3595                 epause->autoneg = AUTONEG_DISABLE;
3596         }
3597         epause->rx_pause = 1;
3598         epause->tx_pause = 1;
3599 }
3600
3601 static int atl1_set_pauseparam(struct net_device *netdev,
3602         struct ethtool_pauseparam *epause)
3603 {
3604         struct atl1_adapter *adapter = netdev_priv(netdev);
3605         struct atl1_hw *hw = &adapter->hw;
3606
3607         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3608             hw->media_type == MEDIA_TYPE_1000M_FULL) {
3609                 epause->autoneg = AUTONEG_ENABLE;
3610         } else {
3611                 epause->autoneg = AUTONEG_DISABLE;
3612         }
3613
3614         epause->rx_pause = 1;
3615         epause->tx_pause = 1;
3616
3617         return 0;
3618 }
3619
3620 /* FIXME: is this right? -- CHS */
3621 static u32 atl1_get_rx_csum(struct net_device *netdev)
3622 {
3623         return 1;
3624 }
3625
3626 static void atl1_get_strings(struct net_device *netdev, u32 stringset,
3627         u8 *data)
3628 {
3629         u8 *p = data;
3630         int i;
3631
3632         switch (stringset) {
3633         case ETH_SS_STATS:
3634                 for (i = 0; i < ARRAY_SIZE(atl1_gstrings_stats); i++) {
3635                         memcpy(p, atl1_gstrings_stats[i].stat_string,
3636                                 ETH_GSTRING_LEN);
3637                         p += ETH_GSTRING_LEN;
3638                 }
3639                 break;
3640         }
3641 }
3642
3643 static int atl1_nway_reset(struct net_device *netdev)
3644 {
3645         struct atl1_adapter *adapter = netdev_priv(netdev);
3646         struct atl1_hw *hw = &adapter->hw;
3647
3648         if (netif_running(netdev)) {
3649                 u16 phy_data;
3650                 atl1_down(adapter);
3651
3652                 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3653                         hw->media_type == MEDIA_TYPE_1000M_FULL) {
3654                         phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN;
3655                 } else {
3656                         switch (hw->media_type) {
3657                         case MEDIA_TYPE_100M_FULL:
3658                                 phy_data = MII_CR_FULL_DUPLEX |
3659                                         MII_CR_SPEED_100 | MII_CR_RESET;
3660                                 break;
3661                         case MEDIA_TYPE_100M_HALF:
3662                                 phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
3663                                 break;
3664                         case MEDIA_TYPE_10M_FULL:
3665                                 phy_data = MII_CR_FULL_DUPLEX |
3666                                         MII_CR_SPEED_10 | MII_CR_RESET;
3667                                 break;
3668                         default:
3669                                 /* MEDIA_TYPE_10M_HALF */
3670                                 phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
3671                         }
3672                 }
3673                 atl1_write_phy_reg(hw, MII_BMCR, phy_data);
3674                 atl1_up(adapter);
3675         }
3676         return 0;
3677 }
3678
3679 const struct ethtool_ops atl1_ethtool_ops = {
3680         .get_settings           = atl1_get_settings,
3681         .set_settings           = atl1_set_settings,
3682         .get_drvinfo            = atl1_get_drvinfo,
3683         .get_wol                = atl1_get_wol,
3684         .set_wol                = atl1_set_wol,
3685         .get_msglevel           = atl1_get_msglevel,
3686         .set_msglevel           = atl1_set_msglevel,
3687         .get_regs_len           = atl1_get_regs_len,
3688         .get_regs               = atl1_get_regs,
3689         .get_ringparam          = atl1_get_ringparam,
3690         .set_ringparam          = atl1_set_ringparam,
3691         .get_pauseparam         = atl1_get_pauseparam,
3692         .set_pauseparam         = atl1_set_pauseparam,
3693         .get_rx_csum            = atl1_get_rx_csum,
3694         .set_tx_csum            = ethtool_op_set_tx_hw_csum,
3695         .get_link               = ethtool_op_get_link,
3696         .set_sg                 = ethtool_op_set_sg,
3697         .get_strings            = atl1_get_strings,
3698         .nway_reset             = atl1_nway_reset,
3699         .get_ethtool_stats      = atl1_get_ethtool_stats,
3700         .get_sset_count         = atl1_get_sset_count,
3701         .set_tso                = ethtool_op_set_tso,
3702 };