drivers/net/ethernet/atheros/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 - 2008 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@atheros.com>
  28  * Jie Yang <jie.yang@atheros.com>
  29  * Chris Snook <csnook@redhat.com>
  30  * Jay Cliburn <jcliburn@gmail.com>
  31  *
  32  * This version is adapted from the Attansic reference driver.
  33  *
  34  * TODO:
  35  * Add more ethtool functions.
  36  * Fix abstruse irq enable/disable condition described here:
  37  *      http://marc.theaimsgroup.com/?l=linux-netdev&m=116398508500553&w=2
  38  *
  39  * NEEDS TESTING:
  40  * VLAN
  41  * multicast
  42  * promiscuous mode
  43  * interrupt coalescing
  44  * SMP torture testing
  45  */
  46
  47 #include <linux/atomic.h>
  48 #include <asm/byteorder.h>
  49
  50 #include <linux/compiler.h>
  51 #include <linux/crc32.h>
  52 #include <linux/delay.h>
  53 #include <linux/dma-mapping.h>
  54 #include <linux/etherdevice.h>
  55 #include <linux/hardirq.h>
  56 #include <linux/if_ether.h>
  57 #include <linux/if_vlan.h>
  58 #include <linux/in.h>
  59 #include <linux/interrupt.h>
  60 #include <linux/ip.h>
  61 #include <linux/irqflags.h>
  62 #include <linux/irqreturn.h>
  63 #include <linux/jiffies.h>
  64 #include <linux/mii.h>
  65 #include <linux/module.h>
  66 #include <linux/moduleparam.h>
  67 #include <linux/net.h>
  68 #include <linux/netdevice.h>
  69 #include <linux/pci.h>
  70 #include <linux/pci_ids.h>
  71 #include <linux/pm.h>
  72 #include <linux/skbuff.h>
  73 #include <linux/slab.h>
  74 #include <linux/spinlock.h>
  75 #include <linux/string.h>
  76 #include <linux/tcp.h>
  77 #include <linux/timer.h>
  78 #include <linux/types.h>
  79 #include <linux/workqueue.h>
  80
  81 #include <net/checksum.h>
  82
  83 #include "atl1.h"
  84
  85 #define ATLX_DRIVER_VERSION "2.1.3"
  86 MODULE_AUTHOR("Xiong Huang <xiong.huang@atheros.com>, "
  87               "Chris Snook <csnook@redhat.com>, "
  88               "Jay Cliburn <jcliburn@gmail.com>");
  89 MODULE_LICENSE("GPL");
  90 MODULE_VERSION(ATLX_DRIVER_VERSION);
  91
  92 /* Temporary hack for merging atl1 and atl2 */
  93 #include "atlx.c"
  94
  95 static const struct ethtool_ops atl1_ethtool_ops;
  96
  97 /*
  98  * This is the only thing that needs to be changed to adjust the
  99  * maximum number of ports that the driver can manage.
 100  */
 101 #define ATL1_MAX_NIC 4
 102
 103 #define OPTION_UNSET    -1
 104 #define OPTION_DISABLED 0
 105 #define OPTION_ENABLED  1
 106
 107 #define ATL1_PARAM_INIT { [0 ... ATL1_MAX_NIC] = OPTION_UNSET }
 108
 109 /*
 110  * Interrupt Moderate Timer in units of 2 us
 111  *
 112  * Valid Range: 10-65535
 113  *
 114  * Default Value: 100 (200us)
 115  */
 116 static int __devinitdata int_mod_timer[ATL1_MAX_NIC+1] = ATL1_PARAM_INIT;
 117 static unsigned int num_int_mod_timer;
 118 module_param_array_named(int_mod_timer, int_mod_timer, int,
 119         &num_int_mod_timer, 0);
 120 MODULE_PARM_DESC(int_mod_timer, "Interrupt moderator timer");
 121
 122 #define DEFAULT_INT_MOD_CNT     100     /* 200us */
 123 #define MAX_INT_MOD_CNT         65000
 124 #define MIN_INT_MOD_CNT         50
 125
 126 struct atl1_option {
 127         enum { enable_option, range_option, list_option } type;
 128         char *name;
 129         char *err;
 130         int def;
 131         union {
 132                 struct {        /* range_option info */
 133                         int min;
 134                         int max;
 135                 } r;
 136                 struct {        /* list_option info */
 137                         int nr;
 138                         struct atl1_opt_list {
 139                                 int i;
 140                                 char *str;
 141                         } *p;
 142                 } l;
 143         } arg;
 144 };
 145
 146 static int __devinit atl1_validate_option(int *value, struct atl1_option *opt,
 147         struct pci_dev *pdev)
 148 {
 149         if (*value == OPTION_UNSET) {
 150                 *value = opt->def;
 151                 return 0;
 152         }
 153
 154         switch (opt->type) {
 155         case enable_option:
 156                 switch (*value) {
 157                 case OPTION_ENABLED:
 158                         dev_info(&pdev->dev, "%s enabled\n", opt->name);
 159                         return 0;
 160                 case OPTION_DISABLED:
 161                         dev_info(&pdev->dev, "%s disabled\n", opt->name);
 162                         return 0;
 163                 }
 164                 break;
 165         case range_option:
 166                 if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
 167                         dev_info(&pdev->dev, "%s set to %i\n", opt->name,
 168                                 *value);
 169                         return 0;
 170                 }
 171                 break;
 172         case list_option:{
 173                         int i;
 174                         struct atl1_opt_list *ent;
 175
 176                         for (i = 0; i < opt->arg.l.nr; i++) {
 177                                 ent = &opt->arg.l.p[i];
 178                                 if (*value == ent->i) {
 179                                         if (ent->str[0] != '\0')
 180                                                 dev_info(&pdev->dev, "%s\n",
 181                                                         ent->str);
 182                                         return 0;
 183                                 }
 184                         }
 185                 }
 186                 break;
 187
 188         default:
 189                 break;
 190         }
 191
 192         dev_info(&pdev->dev, "invalid %s specified (%i) %s\n",
 193                 opt->name, *value, opt->err);
 194         *value = opt->def;
 195         return -1;
 196 }
 197
 198 /*
 199  * atl1_check_options - Range Checking for Command Line Parameters
 200  * @adapter: board private structure
 201  *
 202  * This routine checks all command line parameters for valid user
 203  * input.  If an invalid value is given, or if no user specified
 204  * value exists, a default value is used.  The final value is stored
 205  * in a variable in the adapter structure.
 206  */
 207 static void __devinit atl1_check_options(struct atl1_adapter *adapter)
 208 {
 209         struct pci_dev *pdev = adapter->pdev;
 210         int bd = adapter->bd_number;
 211         if (bd >= ATL1_MAX_NIC) {
 212                 dev_notice(&pdev->dev, "no configuration for board#%i\n", bd);
 213                 dev_notice(&pdev->dev, "using defaults for all values\n");
 214         }
 215         {                       /* Interrupt Moderate Timer */
 216                 struct atl1_option opt = {
 217                         .type = range_option,
 218                         .name = "Interrupt Moderator Timer",
 219                         .err = "using default of "
 220                                 __MODULE_STRING(DEFAULT_INT_MOD_CNT),
 221                         .def = DEFAULT_INT_MOD_CNT,
 222                         .arg = {.r = {.min = MIN_INT_MOD_CNT,
 223                                         .max = MAX_INT_MOD_CNT} }
 224                 };
 225                 int val;
 226                 if (num_int_mod_timer > bd) {
 227                         val = int_mod_timer[bd];
 228                         atl1_validate_option(&val, &opt, pdev);
 229                         adapter->imt = (u16) val;
 230                 } else
 231                         adapter->imt = (u16) (opt.def);
 232         }
 233 }
 234
 235 /*
 236  * atl1_pci_tbl - PCI Device ID Table
 237  */
 238 static DEFINE_PCI_DEVICE_TABLE(atl1_pci_tbl) = {
 239         {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1)},
 240         /* required last entry */
 241         {0,}
 242 };
 243 MODULE_DEVICE_TABLE(pci, atl1_pci_tbl);
 244
 245 static const u32 atl1_default_msg = NETIF_MSG_DRV | NETIF_MSG_PROBE |
 246         NETIF_MSG_LINK | NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP;
 247
 248 static int debug = -1;
 249 module_param(debug, int, 0);
 250 MODULE_PARM_DESC(debug, "Message level (0=none,...,16=all)");
 251
 252 /*
 253  * Reset the transmit and receive units; mask and clear all interrupts.
 254  * hw - Struct containing variables accessed by shared code
 255  * return : 0  or  idle status (if error)
 256  */
 257 static s32 atl1_reset_hw(struct atl1_hw *hw)
 258 {
 259         struct pci_dev *pdev = hw->back->pdev;
 260         struct atl1_adapter *adapter = hw->back;
 261         u32 icr;
 262         int i;
 263
 264         /*
 265          * Clear Interrupt mask to stop board from generating
 266          * interrupts & Clear any pending interrupt events
 267          */
 268         /*
 269          * iowrite32(0, hw->hw_addr + REG_IMR);
 270          * iowrite32(0xffffffff, hw->hw_addr + REG_ISR);
 271          */
 272
 273         /*
 274          * Issue Soft Reset to the MAC.  This will reset the chip's
 275          * transmit, receive, DMA.  It will not effect
 276          * the current PCI configuration.  The global reset bit is self-
 277          * clearing, and should clear within a microsecond.
 278          */
 279         iowrite32(MASTER_CTRL_SOFT_RST, hw->hw_addr + REG_MASTER_CTRL);
 280         ioread32(hw->hw_addr + REG_MASTER_CTRL);
 281
 282         iowrite16(1, hw->hw_addr + REG_PHY_ENABLE);
 283         ioread16(hw->hw_addr + REG_PHY_ENABLE);
 284
 285         /* delay about 1ms */
 286         msleep(1);
 287
 288         /* Wait at least 10ms for All module to be Idle */
 289         for (i = 0; i < 10; i++) {
 290                 icr = ioread32(hw->hw_addr + REG_IDLE_STATUS);
 291                 if (!icr)
 292                         break;
 293                 /* delay 1 ms */
 294                 msleep(1);
 295                 /* FIXME: still the right way to do this? */
 296                 cpu_relax();
 297         }
 298
 299         if (icr) {
 300                 if (netif_msg_hw(adapter))
 301                         dev_dbg(&pdev->dev, "ICR = 0x%x\n", icr);
 302                 return icr;
 303         }
 304
 305         return 0;
 306 }
 307
 308 /* function about EEPROM
 309  *
 310  * check_eeprom_exist
 311  * return 0 if eeprom exist
 312  */
 313 static int atl1_check_eeprom_exist(struct atl1_hw *hw)
 314 {
 315         u32 value;
 316         value = ioread32(hw->hw_addr + REG_SPI_FLASH_CTRL);
 317         if (value & SPI_FLASH_CTRL_EN_VPD) {
 318                 value &= ~SPI_FLASH_CTRL_EN_VPD;
 319                 iowrite32(value, hw->hw_addr + REG_SPI_FLASH_CTRL);
 320         }
 321
 322         value = ioread16(hw->hw_addr + REG_PCIE_CAP_LIST);
 323         return ((value & 0xFF00) == 0x6C00) ? 0 : 1;
 324 }
 325
 326 static bool atl1_read_eeprom(struct atl1_hw *hw, u32 offset, u32 *p_value)
 327 {
 328         int i;
 329         u32 control;
 330
 331         if (offset & 3)
 332                 /* address do not align */
 333                 return false;
 334
 335         iowrite32(0, hw->hw_addr + REG_VPD_DATA);
 336         control = (offset & VPD_CAP_VPD_ADDR_MASK) << VPD_CAP_VPD_ADDR_SHIFT;
 337         iowrite32(control, hw->hw_addr + REG_VPD_CAP);
 338         ioread32(hw->hw_addr + REG_VPD_CAP);
 339
 340         for (i = 0; i < 10; i++) {
 341                 msleep(2);
 342                 control = ioread32(hw->hw_addr + REG_VPD_CAP);
 343                 if (control & VPD_CAP_VPD_FLAG)
 344                         break;
 345         }
 346         if (control & VPD_CAP_VPD_FLAG) {
 347                 *p_value = ioread32(hw->hw_addr + REG_VPD_DATA);
 348                 return true;
 349         }
 350         /* timeout */
 351         return false;
 352 }
 353
 354 /*
 355  * Reads the value from a PHY register
 356  * hw - Struct containing variables accessed by shared code
 357  * reg_addr - address of the PHY register to read
 358  */
 359 static s32 atl1_read_phy_reg(struct atl1_hw *hw, u16 reg_addr, u16 *phy_data)
 360 {
 361         u32 val;
 362         int i;
 363
 364         val = ((u32) (reg_addr & MDIO_REG_ADDR_MASK)) << MDIO_REG_ADDR_SHIFT |
 365                 MDIO_START | MDIO_SUP_PREAMBLE | MDIO_RW | MDIO_CLK_25_4 <<
 366                 MDIO_CLK_SEL_SHIFT;
 367         iowrite32(val, hw->hw_addr + REG_MDIO_CTRL);
 368         ioread32(hw->hw_addr + REG_MDIO_CTRL);
 369
 370         for (i = 0; i < MDIO_WAIT_TIMES; i++) {
 371                 udelay(2);
 372                 val = ioread32(hw->hw_addr + REG_MDIO_CTRL);
 373                 if (!(val & (MDIO_START | MDIO_BUSY)))
 374                         break;
 375         }
 376         if (!(val & (MDIO_START | MDIO_BUSY))) {
 377                 *phy_data = (u16) val;
 378                 return 0;
 379         }
 380         return ATLX_ERR_PHY;
 381 }
 382
 383 #define CUSTOM_SPI_CS_SETUP     2
 384 #define CUSTOM_SPI_CLK_HI       2
 385 #define CUSTOM_SPI_CLK_LO       2
 386 #define CUSTOM_SPI_CS_HOLD      2
 387 #define CUSTOM_SPI_CS_HI        3
 388
 389 static bool atl1_spi_read(struct atl1_hw *hw, u32 addr, u32 *buf)
 390 {
 391         int i;
 392         u32 value;
 393
 394         iowrite32(0, hw->hw_addr + REG_SPI_DATA);
 395         iowrite32(addr, hw->hw_addr + REG_SPI_ADDR);
 396
 397         value = SPI_FLASH_CTRL_WAIT_READY |
 398             (CUSTOM_SPI_CS_SETUP & SPI_FLASH_CTRL_CS_SETUP_MASK) <<
 399             SPI_FLASH_CTRL_CS_SETUP_SHIFT | (CUSTOM_SPI_CLK_HI &
 400                                              SPI_FLASH_CTRL_CLK_HI_MASK) <<
 401             SPI_FLASH_CTRL_CLK_HI_SHIFT | (CUSTOM_SPI_CLK_LO &
 402                                            SPI_FLASH_CTRL_CLK_LO_MASK) <<
 403             SPI_FLASH_CTRL_CLK_LO_SHIFT | (CUSTOM_SPI_CS_HOLD &
 404                                            SPI_FLASH_CTRL_CS_HOLD_MASK) <<
 405             SPI_FLASH_CTRL_CS_HOLD_SHIFT | (CUSTOM_SPI_CS_HI &
 406                                             SPI_FLASH_CTRL_CS_HI_MASK) <<
 407             SPI_FLASH_CTRL_CS_HI_SHIFT | (1 & SPI_FLASH_CTRL_INS_MASK) <<
 408             SPI_FLASH_CTRL_INS_SHIFT;
 409
 410         iowrite32(value, hw->hw_addr + REG_SPI_FLASH_CTRL);
 411
 412         value |= SPI_FLASH_CTRL_START;
 413         iowrite32(value, hw->hw_addr + REG_SPI_FLASH_CTRL);
 414         ioread32(hw->hw_addr + REG_SPI_FLASH_CTRL);
 415
 416         for (i = 0; i < 10; i++) {
 417                 msleep(1);
 418                 value = ioread32(hw->hw_addr + REG_SPI_FLASH_CTRL);
 419                 if (!(value & SPI_FLASH_CTRL_START))
 420                         break;
 421         }
 422
 423         if (value & SPI_FLASH_CTRL_START)
 424                 return false;
 425
 426         *buf = ioread32(hw->hw_addr + REG_SPI_DATA);
 427
 428         return true;
 429 }
 430
 431 /*
 432  * get_permanent_address
 433  * return 0 if get valid mac address,
 434  */
 435 static int atl1_get_permanent_address(struct atl1_hw *hw)
 436 {
 437         u32 addr[2];
 438         u32 i, control;
 439         u16 reg;
 440         u8 eth_addr[ETH_ALEN];
 441         bool key_valid;
 442
 443         if (is_valid_ether_addr(hw->perm_mac_addr))
 444                 return 0;
 445
 446         /* init */
 447         addr[0] = addr[1] = 0;
 448
 449         if (!atl1_check_eeprom_exist(hw)) {
 450                 reg = 0;
 451                 key_valid = false;
 452                 /* Read out all EEPROM content */
 453                 i = 0;
 454                 while (1) {
 455                         if (atl1_read_eeprom(hw, i + 0x100, &control)) {
 456                                 if (key_valid) {
 457                                         if (reg == REG_MAC_STA_ADDR)
 458                                                 addr[0] = control;
 459                                         else if (reg == (REG_MAC_STA_ADDR + 4))
 460                                                 addr[1] = control;
 461                                         key_valid = false;
 462                                 } else if ((control & 0xff) == 0x5A) {
 463                                         key_valid = true;
 464                                         reg = (u16) (control >> 16);
 465                                 } else
 466                                         break;
 467                         } else
 468                                 /* read error */
 469                                 break;
 470                         i += 4;
 471                 }
 472
 473                 *(u32 *) &eth_addr[2] = swab32(addr[0]);
 474                 *(u16 *) &eth_addr[0] = swab16(*(u16 *) &addr[1]);
 475                 if (is_valid_ether_addr(eth_addr)) {
 476                         memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN);
 477                         return 0;
 478                 }
 479         }
 480
 481         /* see if SPI FLAGS exist ? */
 482         addr[0] = addr[1] = 0;
 483         reg = 0;
 484         key_valid = false;
 485         i = 0;
 486         while (1) {
 487                 if (atl1_spi_read(hw, i + 0x1f000, &control)) {
 488                         if (key_valid) {
 489                                 if (reg == REG_MAC_STA_ADDR)
 490                                         addr[0] = control;
 491                                 else if (reg == (REG_MAC_STA_ADDR + 4))
 492                                         addr[1] = control;
 493                                 key_valid = false;
 494                         } else if ((control & 0xff) == 0x5A) {
 495                                 key_valid = true;
 496                                 reg = (u16) (control >> 16);
 497                         } else
 498                                 /* data end */
 499                                 break;
 500                 } else
 501                         /* read error */
 502                         break;
 503                 i += 4;
 504         }
 505
 506         *(u32 *) &eth_addr[2] = swab32(addr[0]);
 507         *(u16 *) &eth_addr[0] = swab16(*(u16 *) &addr[1]);
 508         if (is_valid_ether_addr(eth_addr)) {
 509                 memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN);
 510                 return 0;
 511         }
 512
 513         /*
 514          * On some motherboards, the MAC address is written by the
 515          * BIOS directly to the MAC register during POST, and is
 516          * not stored in eeprom.  If all else thus far has failed
 517          * to fetch the permanent MAC address, try reading it directly.
 518          */
 519         addr[0] = ioread32(hw->hw_addr + REG_MAC_STA_ADDR);
 520         addr[1] = ioread16(hw->hw_addr + (REG_MAC_STA_ADDR + 4));
 521         *(u32 *) &eth_addr[2] = swab32(addr[0]);
 522         *(u16 *) &eth_addr[0] = swab16(*(u16 *) &addr[1]);
 523         if (is_valid_ether_addr(eth_addr)) {
 524                 memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN);
 525                 return 0;
 526         }
 527
 528         return 1;
 529 }
 530
 531 /*
 532  * Reads the adapter's MAC address from the EEPROM
 533  * hw - Struct containing variables accessed by shared code
 534  */
 535 static s32 atl1_read_mac_addr(struct atl1_hw *hw)
 536 {
 537         u16 i;
 538
 539         if (atl1_get_permanent_address(hw))
 540                 random_ether_addr(hw->perm_mac_addr);
 541
 542         for (i = 0; i < ETH_ALEN; i++)
 543                 hw->mac_addr[i] = hw->perm_mac_addr[i];
 544         return 0;
 545 }
 546
 547 /*
 548  * Hashes an address to determine its location in the multicast table
 549  * hw - Struct containing variables accessed by shared code
 550  * mc_addr - the multicast address to hash
 551  *
 552  * atl1_hash_mc_addr
 553  *  purpose
 554  *      set hash value for a multicast address
 555  *      hash calcu processing :
 556  *          1. calcu 32bit CRC for multicast address
 557  *          2. reverse crc with MSB to LSB
 558  */
 559 static u32 atl1_hash_mc_addr(struct atl1_hw *hw, u8 *mc_addr)
 560 {
 561         u32 crc32, value = 0;
 562         int i;
 563
 564         crc32 = ether_crc_le(6, mc_addr);
 565         for (i = 0; i < 32; i++)
 566                 value |= (((crc32 >> i) & 1) << (31 - i));
 567
 568         return value;
 569 }
 570
 571 /*
 572  * Sets the bit in the multicast table corresponding to the hash value.
 573  * hw - Struct containing variables accessed by shared code
 574  * hash_value - Multicast address hash value
 575  */
 576 static void atl1_hash_set(struct atl1_hw *hw, u32 hash_value)
 577 {
 578         u32 hash_bit, hash_reg;
 579         u32 mta;
 580
 581         /*
 582          * The HASH Table  is a register array of 2 32-bit registers.
 583          * It is treated like an array of 64 bits.  We want to set
 584          * bit BitArray[hash_value]. So we figure out what register
 585          * the bit is in, read it, OR in the new bit, then write
 586          * back the new value.  The register is determined by the
 587          * upper 7 bits of the hash value and the bit within that
 588          * register are determined by the lower 5 bits of the value.
 589          */
 590         hash_reg = (hash_value >> 31) & 0x1;
 591         hash_bit = (hash_value >> 26) & 0x1F;
 592         mta = ioread32((hw->hw_addr + REG_RX_HASH_TABLE) + (hash_reg << 2));
 593         mta |= (1 << hash_bit);
 594         iowrite32(mta, (hw->hw_addr + REG_RX_HASH_TABLE) + (hash_reg << 2));
 595 }
 596
 597 /*
 598  * Writes a value to a PHY register
 599  * hw - Struct containing variables accessed by shared code
 600  * reg_addr - address of the PHY register to write
 601  * data - data to write to the PHY
 602  */
 603 static s32 atl1_write_phy_reg(struct atl1_hw *hw, u32 reg_addr, u16 phy_data)
 604 {
 605         int i;
 606         u32 val;
 607
 608         val = ((u32) (phy_data & MDIO_DATA_MASK)) << MDIO_DATA_SHIFT |
 609             (reg_addr & MDIO_REG_ADDR_MASK) << MDIO_REG_ADDR_SHIFT |
 610             MDIO_SUP_PREAMBLE |
 611             MDIO_START | MDIO_CLK_25_4 << MDIO_CLK_SEL_SHIFT;
 612         iowrite32(val, hw->hw_addr + REG_MDIO_CTRL);
 613         ioread32(hw->hw_addr + REG_MDIO_CTRL);
 614
 615         for (i = 0; i < MDIO_WAIT_TIMES; i++) {
 616                 udelay(2);
 617                 val = ioread32(hw->hw_addr + REG_MDIO_CTRL);
 618                 if (!(val & (MDIO_START | MDIO_BUSY)))
 619                         break;
 620         }
 621
 622         if (!(val & (MDIO_START | MDIO_BUSY)))
 623                 return 0;
 624
 625         return ATLX_ERR_PHY;
 626 }
 627
 628 /*
 629  * Make L001's PHY out of Power Saving State (bug)
 630  * hw - Struct containing variables accessed by shared code
 631  * when power on, L001's PHY always on Power saving State
 632  * (Gigabit Link forbidden)
 633  */
 634 static s32 atl1_phy_leave_power_saving(struct atl1_hw *hw)
 635 {
 636         s32 ret;
 637         ret = atl1_write_phy_reg(hw, 29, 0x0029);
 638         if (ret)
 639                 return ret;
 640         return atl1_write_phy_reg(hw, 30, 0);
 641 }
 642
 643 /*
 644  * Resets the PHY and make all config validate
 645  * hw - Struct containing variables accessed by shared code
 646  *
 647  * Sets bit 15 and 12 of the MII Control regiser (for F001 bug)
 648  */
 649 static s32 atl1_phy_reset(struct atl1_hw *hw)
 650 {
 651         struct pci_dev *pdev = hw->back->pdev;
 652         struct atl1_adapter *adapter = hw->back;
 653         s32 ret_val;
 654         u16 phy_data;
 655
 656         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
 657             hw->media_type == MEDIA_TYPE_1000M_FULL)
 658                 phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN;
 659         else {
 660                 switch (hw->media_type) {
 661                 case MEDIA_TYPE_100M_FULL:
 662                         phy_data =
 663                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
 664                             MII_CR_RESET;
 665                         break;
 666                 case MEDIA_TYPE_100M_HALF:
 667                         phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
 668                         break;
 669                 case MEDIA_TYPE_10M_FULL:
 670                         phy_data =
 671                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
 672                         break;
 673                 default:
 674                         /* MEDIA_TYPE_10M_HALF: */
 675                         phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
 676                         break;
 677                 }
 678         }
 679
 680         ret_val = atl1_write_phy_reg(hw, MII_BMCR, phy_data);
 681         if (ret_val) {
 682                 u32 val;
 683                 int i;
 684                 /* pcie serdes link may be down! */
 685                 if (netif_msg_hw(adapter))
 686                         dev_dbg(&pdev->dev, "pcie phy link down\n");
 687
 688                 for (i = 0; i < 25; i++) {
 689                         msleep(1);
 690                         val = ioread32(hw->hw_addr + REG_MDIO_CTRL);
 691                         if (!(val & (MDIO_START | MDIO_BUSY)))
 692                                 break;
 693                 }
 694
 695                 if ((val & (MDIO_START | MDIO_BUSY)) != 0) {
 696                         if (netif_msg_hw(adapter))
 697                                 dev_warn(&pdev->dev,
 698                                         "pcie link down at least 25ms\n");
 699                         return ret_val;
 700                 }
 701         }
 702         return 0;
 703 }
 704
 705 /*
 706  * Configures PHY autoneg and flow control advertisement settings
 707  * hw - Struct containing variables accessed by shared code
 708  */
 709 static s32 atl1_phy_setup_autoneg_adv(struct atl1_hw *hw)
 710 {
 711         s32 ret_val;
 712         s16 mii_autoneg_adv_reg;
 713         s16 mii_1000t_ctrl_reg;
 714
 715         /* Read the MII Auto-Neg Advertisement Register (Address 4). */
 716         mii_autoneg_adv_reg = MII_AR_DEFAULT_CAP_MASK;
 717
 718         /* Read the MII 1000Base-T Control Register (Address 9). */
 719         mii_1000t_ctrl_reg = MII_ATLX_CR_1000T_DEFAULT_CAP_MASK;
 720
 721         /*
 722          * First we clear all the 10/100 mb speed bits in the Auto-Neg
 723          * Advertisement Register (Address 4) and the 1000 mb speed bits in
 724          * the  1000Base-T Control Register (Address 9).
 725          */
 726         mii_autoneg_adv_reg &= ~MII_AR_SPEED_MASK;
 727         mii_1000t_ctrl_reg &= ~MII_ATLX_CR_1000T_SPEED_MASK;
 728
 729         /*
 730          * Need to parse media_type  and set up
 731          * the appropriate PHY registers.
 732          */
 733         switch (hw->media_type) {
 734         case MEDIA_TYPE_AUTO_SENSOR:
 735                 mii_autoneg_adv_reg |= (MII_AR_10T_HD_CAPS |
 736                                         MII_AR_10T_FD_CAPS |
 737                                         MII_AR_100TX_HD_CAPS |
 738                                         MII_AR_100TX_FD_CAPS);
 739                 mii_1000t_ctrl_reg |= MII_ATLX_CR_1000T_FD_CAPS;
 740                 break;
 741
 742         case MEDIA_TYPE_1000M_FULL:
 743                 mii_1000t_ctrl_reg |= MII_ATLX_CR_1000T_FD_CAPS;
 744                 break;
 745
 746         case MEDIA_TYPE_100M_FULL:
 747                 mii_autoneg_adv_reg |= MII_AR_100TX_FD_CAPS;
 748                 break;
 749
 750         case MEDIA_TYPE_100M_HALF:
 751                 mii_autoneg_adv_reg |= MII_AR_100TX_HD_CAPS;
 752                 break;
 753
 754         case MEDIA_TYPE_10M_FULL:
 755                 mii_autoneg_adv_reg |= MII_AR_10T_FD_CAPS;
 756                 break;
 757
 758         default:
 759                 mii_autoneg_adv_reg |= MII_AR_10T_HD_CAPS;
 760                 break;
 761         }
 762
 763         /* flow control fixed to enable all */
 764         mii_autoneg_adv_reg |= (MII_AR_ASM_DIR | MII_AR_PAUSE);
 765
 766         hw->mii_autoneg_adv_reg = mii_autoneg_adv_reg;
 767         hw->mii_1000t_ctrl_reg = mii_1000t_ctrl_reg;
 768
 769         ret_val = atl1_write_phy_reg(hw, MII_ADVERTISE, mii_autoneg_adv_reg);
 770         if (ret_val)
 771                 return ret_val;
 772
 773         ret_val = atl1_write_phy_reg(hw, MII_ATLX_CR, mii_1000t_ctrl_reg);
 774         if (ret_val)
 775                 return ret_val;
 776
 777         return 0;
 778 }
 779
 780 /*
 781  * Configures link settings.
 782  * hw - Struct containing variables accessed by shared code
 783  * Assumes the hardware has previously been reset and the
 784  * transmitter and receiver are not enabled.
 785  */
 786 static s32 atl1_setup_link(struct atl1_hw *hw)
 787 {
 788         struct pci_dev *pdev = hw->back->pdev;
 789         struct atl1_adapter *adapter = hw->back;
 790         s32 ret_val;
 791
 792         /*
 793          * Options:
 794          *  PHY will advertise value(s) parsed from
 795          *  autoneg_advertised and fc
 796          *  no matter what autoneg is , We will not wait link result.
 797          */
 798         ret_val = atl1_phy_setup_autoneg_adv(hw);
 799         if (ret_val) {
 800                 if (netif_msg_link(adapter))
 801                         dev_dbg(&pdev->dev,
 802                                 "error setting up autonegotiation\n");
 803                 return ret_val;
 804         }
 805         /* SW.Reset , En-Auto-Neg if needed */
 806         ret_val = atl1_phy_reset(hw);
 807         if (ret_val) {
 808                 if (netif_msg_link(adapter))
 809                         dev_dbg(&pdev->dev, "error resetting phy\n");
 810                 return ret_val;
 811         }
 812         hw->phy_configured = true;
 813         return ret_val;
 814 }
 815
 816 static void atl1_init_flash_opcode(struct atl1_hw *hw)
 817 {
 818         if (hw->flash_vendor >= ARRAY_SIZE(flash_table))
 819                 /* Atmel */
 820                 hw->flash_vendor = 0;
 821
 822         /* Init OP table */
 823         iowrite8(flash_table[hw->flash_vendor].cmd_program,
 824                 hw->hw_addr + REG_SPI_FLASH_OP_PROGRAM);
 825         iowrite8(flash_table[hw->flash_vendor].cmd_sector_erase,
 826                 hw->hw_addr + REG_SPI_FLASH_OP_SC_ERASE);
 827         iowrite8(flash_table[hw->flash_vendor].cmd_chip_erase,
 828                 hw->hw_addr + REG_SPI_FLASH_OP_CHIP_ERASE);
 829         iowrite8(flash_table[hw->flash_vendor].cmd_rdid,
 830                 hw->hw_addr + REG_SPI_FLASH_OP_RDID);
 831         iowrite8(flash_table[hw->flash_vendor].cmd_wren,
 832                 hw->hw_addr + REG_SPI_FLASH_OP_WREN);
 833         iowrite8(flash_table[hw->flash_vendor].cmd_rdsr,
 834                 hw->hw_addr + REG_SPI_FLASH_OP_RDSR);
 835         iowrite8(flash_table[hw->flash_vendor].cmd_wrsr,
 836                 hw->hw_addr + REG_SPI_FLASH_OP_WRSR);
 837         iowrite8(flash_table[hw->flash_vendor].cmd_read,
 838                 hw->hw_addr + REG_SPI_FLASH_OP_READ);
 839 }
 840
 841 /*
 842  * Performs basic configuration of the adapter.
 843  * hw - Struct containing variables accessed by shared code
 844  * Assumes that the controller has previously been reset and is in a
 845  * post-reset uninitialized state. Initializes multicast table,
 846  * and  Calls routines to setup link
 847  * Leaves the transmit and receive units disabled and uninitialized.
 848  */
 849 static s32 atl1_init_hw(struct atl1_hw *hw)
 850 {
 851         u32 ret_val = 0;
 852
 853         /* Zero out the Multicast HASH table */
 854         iowrite32(0, hw->hw_addr + REG_RX_HASH_TABLE);
 855         /* clear the old settings from the multicast hash table */
 856         iowrite32(0, (hw->hw_addr + REG_RX_HASH_TABLE) + (1 << 2));
 857
 858         atl1_init_flash_opcode(hw);
 859
 860         if (!hw->phy_configured) {
 861                 /* enable GPHY LinkChange Interrrupt */
 862                 ret_val = atl1_write_phy_reg(hw, 18, 0xC00);
 863                 if (ret_val)
 864                         return ret_val;
 865                 /* make PHY out of power-saving state */
 866                 ret_val = atl1_phy_leave_power_saving(hw);
 867                 if (ret_val)
 868                         return ret_val;
 869                 /* Call a subroutine to configure the link */
 870                 ret_val = atl1_setup_link(hw);
 871         }
 872         return ret_val;
 873 }
 874
 875 /*
 876  * Detects the current speed and duplex settings of the hardware.
 877  * hw - Struct containing variables accessed by shared code
 878  * speed - Speed of the connection
 879  * duplex - Duplex setting of the connection
 880  */
 881 static s32 atl1_get_speed_and_duplex(struct atl1_hw *hw, u16 *speed, u16 *duplex)
 882 {
 883         struct pci_dev *pdev = hw->back->pdev;
 884         struct atl1_adapter *adapter = hw->back;
 885         s32 ret_val;
 886         u16 phy_data;
 887
 888         /* ; --- Read   PHY Specific Status Register (17) */
 889         ret_val = atl1_read_phy_reg(hw, MII_ATLX_PSSR, &phy_data);
 890         if (ret_val)
 891                 return ret_val;
 892
 893         if (!(phy_data & MII_ATLX_PSSR_SPD_DPLX_RESOLVED))
 894                 return ATLX_ERR_PHY_RES;
 895
 896         switch (phy_data & MII_ATLX_PSSR_SPEED) {
 897         case MII_ATLX_PSSR_1000MBS:
 898                 *speed = SPEED_1000;
 899                 break;
 900         case MII_ATLX_PSSR_100MBS:
 901                 *speed = SPEED_100;
 902                 break;
 903         case MII_ATLX_PSSR_10MBS:
 904                 *speed = SPEED_10;
 905                 break;
 906         default:
 907                 if (netif_msg_hw(adapter))
 908                         dev_dbg(&pdev->dev, "error getting speed\n");
 909                 return ATLX_ERR_PHY_SPEED;
 910                 break;
 911         }
 912         if (phy_data & MII_ATLX_PSSR_DPLX)
 913                 *duplex = FULL_DUPLEX;
 914         else
 915                 *duplex = HALF_DUPLEX;
 916
 917         return 0;
 918 }
 919
 920 static void atl1_set_mac_addr(struct atl1_hw *hw)
 921 {
 922         u32 value;
 923         /*
 924          * 00-0B-6A-F6-00-DC
 925          * 0:  6AF600DC   1: 000B
 926          * low dword
 927          */
 928         value = (((u32) hw->mac_addr[2]) << 24) |
 929             (((u32) hw->mac_addr[3]) << 16) |
 930             (((u32) hw->mac_addr[4]) << 8) | (((u32) hw->mac_addr[5]));
 931         iowrite32(value, hw->hw_addr + REG_MAC_STA_ADDR);
 932         /* high dword */
 933         value = (((u32) hw->mac_addr[0]) << 8) | (((u32) hw->mac_addr[1]));
 934         iowrite32(value, (hw->hw_addr + REG_MAC_STA_ADDR) + (1 << 2));
 935 }
 936
 937 /*
 938  * atl1_sw_init - Initialize general software structures (struct atl1_adapter)
 939  * @adapter: board private structure to initialize
 940  *
 941  * atl1_sw_init initializes the Adapter private data structure.
 942  * Fields are initialized based on PCI device information and
 943  * OS network device settings (MTU size).
 944  */
 945 static int __devinit atl1_sw_init(struct atl1_adapter *adapter)
 946 {
 947         struct atl1_hw *hw = &adapter->hw;
 948         struct net_device *netdev = adapter->netdev;
 949
 950         hw->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
 951         hw->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
 952
 953         adapter->wol = 0;
 954         device_set_wakeup_enable(&adapter->pdev->dev, false);
 955         adapter->rx_buffer_len = (hw->max_frame_size + 7) & ~7;
 956         adapter->ict = 50000;           /* 100ms */
 957         adapter->link_speed = SPEED_0;  /* hardware init */
 958         adapter->link_duplex = FULL_DUPLEX;
 959
 960         hw->phy_configured = false;
 961         hw->preamble_len = 7;
 962         hw->ipgt = 0x60;
 963         hw->min_ifg = 0x50;
 964         hw->ipgr1 = 0x40;
 965         hw->ipgr2 = 0x60;
 966         hw->max_retry = 0xf;
 967         hw->lcol = 0x37;
 968         hw->jam_ipg = 7;
 969         hw->rfd_burst = 8;
 970         hw->rrd_burst = 8;
 971         hw->rfd_fetch_gap = 1;
 972         hw->rx_jumbo_th = adapter->rx_buffer_len / 8;
 973         hw->rx_jumbo_lkah = 1;
 974         hw->rrd_ret_timer = 16;
 975         hw->tpd_burst = 4;
 976         hw->tpd_fetch_th = 16;
 977         hw->txf_burst = 0x100;
 978         hw->tx_jumbo_task_th = (hw->max_frame_size + 7) >> 3;
 979         hw->tpd_fetch_gap = 1;
 980         hw->rcb_value = atl1_rcb_64;
 981         hw->dma_ord = atl1_dma_ord_enh;
 982         hw->dmar_block = atl1_dma_req_256;
 983         hw->dmaw_block = atl1_dma_req_256;
 984         hw->cmb_rrd = 4;
 985         hw->cmb_tpd = 4;
 986         hw->cmb_rx_timer = 1;   /* about 2us */
 987         hw->cmb_tx_timer = 1;   /* about 2us */
 988         hw->smb_timer = 100000; /* about 200ms */
 989
 990         spin_lock_init(&adapter->lock);
 991         spin_lock_init(&adapter->mb_lock);
 992
 993         return 0;
 994 }
 995
 996 static int mdio_read(struct net_device *netdev, int phy_id, int reg_num)
 997 {
 998         struct atl1_adapter *adapter = netdev_priv(netdev);
 999         u16 result;
1000
1001         atl1_read_phy_reg(&adapter->hw, reg_num & 0x1f, &result);
1002
1003         return result;
1004 }
1005
1006 static void mdio_write(struct net_device *netdev, int phy_id, int reg_num,
1007         int val)
1008 {
1009         struct atl1_adapter *adapter = netdev_priv(netdev);
1010
1011         atl1_write_phy_reg(&adapter->hw, reg_num, val);
1012 }
1013
1014 /*
1015  * atl1_mii_ioctl -
1016  * @netdev:
1017  * @ifreq:
1018  * @cmd:
1019  */
1020 static int atl1_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1021 {
1022         struct atl1_adapter *adapter = netdev_priv(netdev);
1023         unsigned long flags;
1024         int retval;
1025
1026         if (!netif_running(netdev))
1027                 return -EINVAL;
1028
1029         spin_lock_irqsave(&adapter->lock, flags);
1030         retval = generic_mii_ioctl(&adapter->mii, if_mii(ifr), cmd, NULL);
1031         spin_unlock_irqrestore(&adapter->lock, flags);
1032
1033         return retval;
1034 }
1035
1036 /*
1037  * atl1_setup_mem_resources - allocate Tx / RX descriptor resources
1038  * @adapter: board private structure
1039  *
1040  * Return 0 on success, negative on failure
1041  */
1042 static s32 atl1_setup_ring_resources(struct atl1_adapter *adapter)
1043 {
1044         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1045         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1046         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1047         struct atl1_ring_header *ring_header = &adapter->ring_header;
1048         struct pci_dev *pdev = adapter->pdev;
1049         int size;
1050         u8 offset = 0;
1051
1052         size = sizeof(struct atl1_buffer) * (tpd_ring->count + rfd_ring->count);
1053         tpd_ring->buffer_info = kzalloc(size, GFP_KERNEL);
1054         if (unlikely(!tpd_ring->buffer_info)) {
1055                 if (netif_msg_drv(adapter))
1056                         dev_err(&pdev->dev, "kzalloc failed , size = D%d\n",
1057                                 size);
1058                 goto err_nomem;
1059         }
1060         rfd_ring->buffer_info =
1061                 (struct atl1_buffer *)(tpd_ring->buffer_info + tpd_ring->count);
1062
1063         /*
1064          * real ring DMA buffer
1065          * each ring/block may need up to 8 bytes for alignment, hence the
1066          * additional 40 bytes tacked onto the end.
1067          */
1068         ring_header->size = size =
1069                 sizeof(struct tx_packet_desc) * tpd_ring->count
1070                 + sizeof(struct rx_free_desc) * rfd_ring->count
1071                 + sizeof(struct rx_return_desc) * rrd_ring->count
1072                 + sizeof(struct coals_msg_block)
1073                 + sizeof(struct stats_msg_block)
1074                 + 40;
1075
1076         ring_header->desc = pci_alloc_consistent(pdev, ring_header->size,
1077                 &ring_header->dma);
1078         if (unlikely(!ring_header->desc)) {
1079                 if (netif_msg_drv(adapter))
1080                         dev_err(&pdev->dev, "pci_alloc_consistent failed\n");
1081                 goto err_nomem;
1082         }
1083
1084         memset(ring_header->desc, 0, ring_header->size);
1085
1086         /* init TPD ring */
1087         tpd_ring->dma = ring_header->dma;
1088         offset = (tpd_ring->dma & 0x7) ? (8 - (ring_header->dma & 0x7)) : 0;
1089         tpd_ring->dma += offset;
1090         tpd_ring->desc = (u8 *) ring_header->desc + offset;
1091         tpd_ring->size = sizeof(struct tx_packet_desc) * tpd_ring->count;
1092
1093         /* init RFD ring */
1094         rfd_ring->dma = tpd_ring->dma + tpd_ring->size;
1095         offset = (rfd_ring->dma & 0x7) ? (8 - (rfd_ring->dma & 0x7)) : 0;
1096         rfd_ring->dma += offset;
1097         rfd_ring->desc = (u8 *) tpd_ring->desc + (tpd_ring->size + offset);
1098         rfd_ring->size = sizeof(struct rx_free_desc) * rfd_ring->count;
1099
1100
1101         /* init RRD ring */
1102         rrd_ring->dma = rfd_ring->dma + rfd_ring->size;
1103         offset = (rrd_ring->dma & 0x7) ? (8 - (rrd_ring->dma & 0x7)) : 0;
1104         rrd_ring->dma += offset;
1105         rrd_ring->desc = (u8 *) rfd_ring->desc + (rfd_ring->size + offset);
1106         rrd_ring->size = sizeof(struct rx_return_desc) * rrd_ring->count;
1107
1108
1109         /* init CMB */
1110         adapter->cmb.dma = rrd_ring->dma + rrd_ring->size;
1111         offset = (adapter->cmb.dma & 0x7) ? (8 - (adapter->cmb.dma & 0x7)) : 0;
1112         adapter->cmb.dma += offset;
1113         adapter->cmb.cmb = (struct coals_msg_block *)
1114                 ((u8 *) rrd_ring->desc + (rrd_ring->size + offset));
1115
1116         /* init SMB */
1117         adapter->smb.dma = adapter->cmb.dma + sizeof(struct coals_msg_block);
1118         offset = (adapter->smb.dma & 0x7) ? (8 - (adapter->smb.dma & 0x7)) : 0;
1119         adapter->smb.dma += offset;
1120         adapter->smb.smb = (struct stats_msg_block *)
1121                 ((u8 *) adapter->cmb.cmb +
1122                 (sizeof(struct coals_msg_block) + offset));
1123
1124         return 0;
1125
1126 err_nomem:
1127         kfree(tpd_ring->buffer_info);
1128         return -ENOMEM;
1129 }
1130
1131 static void atl1_init_ring_ptrs(struct atl1_adapter *adapter)
1132 {
1133         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1134         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1135         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1136
1137         atomic_set(&tpd_ring->next_to_use, 0);
1138         atomic_set(&tpd_ring->next_to_clean, 0);
1139
1140         rfd_ring->next_to_clean = 0;
1141         atomic_set(&rfd_ring->next_to_use, 0);
1142
1143         rrd_ring->next_to_use = 0;
1144         atomic_set(&rrd_ring->next_to_clean, 0);
1145 }
1146
1147 /*
1148  * atl1_clean_rx_ring - Free RFD Buffers
1149  * @adapter: board private structure
1150  */
1151 static void atl1_clean_rx_ring(struct atl1_adapter *adapter)
1152 {
1153         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1154         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1155         struct atl1_buffer *buffer_info;
1156         struct pci_dev *pdev = adapter->pdev;
1157         unsigned long size;
1158         unsigned int i;
1159
1160         /* Free all the Rx ring sk_buffs */
1161         for (i = 0; i < rfd_ring->count; i++) {
1162                 buffer_info = &rfd_ring->buffer_info[i];
1163                 if (buffer_info->dma) {
1164                         pci_unmap_page(pdev, buffer_info->dma,
1165                                 buffer_info->length, PCI_DMA_FROMDEVICE);
1166                         buffer_info->dma = 0;
1167                 }
1168                 if (buffer_info->skb) {
1169                         dev_kfree_skb(buffer_info->skb);
1170                         buffer_info->skb = NULL;
1171                 }
1172         }
1173
1174         size = sizeof(struct atl1_buffer) * rfd_ring->count;
1175         memset(rfd_ring->buffer_info, 0, size);
1176
1177         /* Zero out the descriptor ring */
1178         memset(rfd_ring->desc, 0, rfd_ring->size);
1179
1180         rfd_ring->next_to_clean = 0;
1181         atomic_set(&rfd_ring->next_to_use, 0);
1182
1183         rrd_ring->next_to_use = 0;
1184         atomic_set(&rrd_ring->next_to_clean, 0);
1185 }
1186
1187 /*
1188  * atl1_clean_tx_ring - Free Tx Buffers
1189  * @adapter: board private structure
1190  */
1191 static void atl1_clean_tx_ring(struct atl1_adapter *adapter)
1192 {
1193         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1194         struct atl1_buffer *buffer_info;
1195         struct pci_dev *pdev = adapter->pdev;
1196         unsigned long size;
1197         unsigned int i;
1198
1199         /* Free all the Tx ring sk_buffs */
1200         for (i = 0; i < tpd_ring->count; i++) {
1201                 buffer_info = &tpd_ring->buffer_info[i];
1202                 if (buffer_info->dma) {
1203                         pci_unmap_page(pdev, buffer_info->dma,
1204                                 buffer_info->length, PCI_DMA_TODEVICE);
1205                         buffer_info->dma = 0;
1206                 }
1207         }
1208
1209         for (i = 0; i < tpd_ring->count; i++) {
1210                 buffer_info = &tpd_ring->buffer_info[i];
1211                 if (buffer_info->skb) {
1212                         dev_kfree_skb_any(buffer_info->skb);
1213                         buffer_info->skb = NULL;
1214                 }
1215         }
1216
1217         size = sizeof(struct atl1_buffer) * tpd_ring->count;
1218         memset(tpd_ring->buffer_info, 0, size);
1219
1220         /* Zero out the descriptor ring */
1221         memset(tpd_ring->desc, 0, tpd_ring->size);
1222
1223         atomic_set(&tpd_ring->next_to_use, 0);
1224         atomic_set(&tpd_ring->next_to_clean, 0);
1225 }
1226
1227 /*
1228  * atl1_free_ring_resources - Free Tx / RX descriptor Resources
1229  * @adapter: board private structure
1230  *
1231  * Free all transmit software resources
1232  */
1233 static void atl1_free_ring_resources(struct atl1_adapter *adapter)
1234 {
1235         struct pci_dev *pdev = adapter->pdev;
1236         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1237         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1238         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1239         struct atl1_ring_header *ring_header = &adapter->ring_header;
1240
1241         atl1_clean_tx_ring(adapter);
1242         atl1_clean_rx_ring(adapter);
1243
1244         kfree(tpd_ring->buffer_info);
1245         pci_free_consistent(pdev, ring_header->size, ring_header->desc,
1246                 ring_header->dma);
1247
1248         tpd_ring->buffer_info = NULL;
1249         tpd_ring->desc = NULL;
1250         tpd_ring->dma = 0;
1251
1252         rfd_ring->buffer_info = NULL;
1253         rfd_ring->desc = NULL;
1254         rfd_ring->dma = 0;
1255
1256         rrd_ring->desc = NULL;
1257         rrd_ring->dma = 0;
1258
1259         adapter->cmb.dma = 0;
1260         adapter->cmb.cmb = NULL;
1261
1262         adapter->smb.dma = 0;
1263         adapter->smb.smb = NULL;
1264 }
1265
1266 static void atl1_setup_mac_ctrl(struct atl1_adapter *adapter)
1267 {
1268         u32 value;
1269         struct atl1_hw *hw = &adapter->hw;
1270         struct net_device *netdev = adapter->netdev;
1271         /* Config MAC CTRL Register */
1272         value = MAC_CTRL_TX_EN | MAC_CTRL_RX_EN;
1273         /* duplex */
1274         if (FULL_DUPLEX == adapter->link_duplex)
1275                 value |= MAC_CTRL_DUPLX;
1276         /* speed */
1277         value |= ((u32) ((SPEED_1000 == adapter->link_speed) ?
1278                          MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100) <<
1279                   MAC_CTRL_SPEED_SHIFT);
1280         /* flow control */
1281         value |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW);
1282         /* PAD & CRC */
1283         value |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD);
1284         /* preamble length */
1285         value |= (((u32) adapter->hw.preamble_len
1286                    & MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT);
1287         /* vlan */
1288         __atlx_vlan_mode(netdev->features, &value);
1289         /* rx checksum
1290            if (adapter->rx_csum)
1291            value |= MAC_CTRL_RX_CHKSUM_EN;
1292          */
1293         /* filter mode */
1294         value |= MAC_CTRL_BC_EN;
1295         if (netdev->flags & IFF_PROMISC)
1296                 value |= MAC_CTRL_PROMIS_EN;
1297         else if (netdev->flags & IFF_ALLMULTI)
1298                 value |= MAC_CTRL_MC_ALL_EN;
1299         /* value |= MAC_CTRL_LOOPBACK; */
1300         iowrite32(value, hw->hw_addr + REG_MAC_CTRL);
1301 }
1302
1303 static u32 atl1_check_link(struct atl1_adapter *adapter)
1304 {
1305         struct atl1_hw *hw = &adapter->hw;
1306         struct net_device *netdev = adapter->netdev;
1307         u32 ret_val;
1308         u16 speed, duplex, phy_data;
1309         int reconfig = 0;
1310
1311         /* MII_BMSR must read twice */
1312         atl1_read_phy_reg(hw, MII_BMSR, &phy_data);
1313         atl1_read_phy_reg(hw, MII_BMSR, &phy_data);
1314         if (!(phy_data & BMSR_LSTATUS)) {
1315                 /* link down */
1316                 if (netif_carrier_ok(netdev)) {
1317                         /* old link state: Up */
1318                         if (netif_msg_link(adapter))
1319                                 dev_info(&adapter->pdev->dev, "link is down\n");
1320                         adapter->link_speed = SPEED_0;
1321                         netif_carrier_off(netdev);
1322                 }
1323                 return 0;
1324         }
1325
1326         /* Link Up */
1327         ret_val = atl1_get_speed_and_duplex(hw, &speed, &duplex);
1328         if (ret_val)
1329                 return ret_val;
1330
1331         switch (hw->media_type) {
1332         case MEDIA_TYPE_1000M_FULL:
1333                 if (speed != SPEED_1000 || duplex != FULL_DUPLEX)
1334                         reconfig = 1;
1335                 break;
1336         case MEDIA_TYPE_100M_FULL:
1337                 if (speed != SPEED_100 || duplex != FULL_DUPLEX)
1338                         reconfig = 1;
1339                 break;
1340         case MEDIA_TYPE_100M_HALF:
1341                 if (speed != SPEED_100 || duplex != HALF_DUPLEX)
1342                         reconfig = 1;
1343                 break;
1344         case MEDIA_TYPE_10M_FULL:
1345                 if (speed != SPEED_10 || duplex != FULL_DUPLEX)
1346                         reconfig = 1;
1347                 break;
1348         case MEDIA_TYPE_10M_HALF:
1349                 if (speed != SPEED_10 || duplex != HALF_DUPLEX)
1350                         reconfig = 1;
1351                 break;
1352         }
1353
1354         /* link result is our setting */
1355         if (!reconfig) {
1356                 if (adapter->link_speed != speed ||
1357                     adapter->link_duplex != duplex) {
1358                         adapter->link_speed = speed;
1359                         adapter->link_duplex = duplex;
1360                         atl1_setup_mac_ctrl(adapter);
1361                         if (netif_msg_link(adapter))
1362                                 dev_info(&adapter->pdev->dev,
1363                                         "%s link is up %d Mbps %s\n",
1364                                         netdev->name, adapter->link_speed,
1365                                         adapter->link_duplex == FULL_DUPLEX ?
1366                                         "full duplex" : "half duplex");
1367                 }
1368                 if (!netif_carrier_ok(netdev)) {
1369                         /* Link down -> Up */
1370                         netif_carrier_on(netdev);
1371                 }
1372                 return 0;
1373         }
1374
1375         /* change original link status */
1376         if (netif_carrier_ok(netdev)) {
1377                 adapter->link_speed = SPEED_0;
1378                 netif_carrier_off(netdev);
1379                 netif_stop_queue(netdev);
1380         }
1381
1382         if (hw->media_type != MEDIA_TYPE_AUTO_SENSOR &&
1383             hw->media_type != MEDIA_TYPE_1000M_FULL) {
1384                 switch (hw->media_type) {
1385                 case MEDIA_TYPE_100M_FULL:
1386                         phy_data = MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
1387                                    MII_CR_RESET;
1388                         break;
1389                 case MEDIA_TYPE_100M_HALF:
1390                         phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
1391                         break;
1392                 case MEDIA_TYPE_10M_FULL:
1393                         phy_data =
1394                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
1395                         break;
1396                 default:
1397                         /* MEDIA_TYPE_10M_HALF: */
1398                         phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
1399                         break;
1400                 }
1401                 atl1_write_phy_reg(hw, MII_BMCR, phy_data);
1402                 return 0;
1403         }
1404
1405         /* auto-neg, insert timer to re-config phy */
1406         if (!adapter->phy_timer_pending) {
1407                 adapter->phy_timer_pending = true;
1408                 mod_timer(&adapter->phy_config_timer,
1409                           round_jiffies(jiffies + 3 * HZ));
1410         }
1411
1412         return 0;
1413 }
1414
1415 static void set_flow_ctrl_old(struct atl1_adapter *adapter)
1416 {
1417         u32 hi, lo, value;
1418
1419         /* RFD Flow Control */
1420         value = adapter->rfd_ring.count;
1421         hi = value / 16;
1422         if (hi < 2)
1423                 hi = 2;
1424         lo = value * 7 / 8;
1425
1426         value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) |
1427                 ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT);
1428         iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RXF_PAUSE_THRESH);
1429
1430         /* RRD Flow Control */
1431         value = adapter->rrd_ring.count;
1432         lo = value / 16;
1433         hi = value * 7 / 8;
1434         if (lo < 2)
1435                 lo = 2;
1436         value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) |
1437                 ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT);
1438         iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RRD_PAUSE_THRESH);
1439 }
1440
1441 static void set_flow_ctrl_new(struct atl1_hw *hw)
1442 {
1443         u32 hi, lo, value;
1444
1445         /* RXF Flow Control */
1446         value = ioread32(hw->hw_addr + REG_SRAM_RXF_LEN);
1447         lo = value / 16;
1448         if (lo < 192)
1449                 lo = 192;
1450         hi = value * 7 / 8;
1451         if (hi < lo)
1452                 hi = lo + 16;
1453         value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) |
1454                 ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT);
1455         iowrite32(value, hw->hw_addr + REG_RXQ_RXF_PAUSE_THRESH);
1456
1457         /* RRD Flow Control */
1458         value = ioread32(hw->hw_addr + REG_SRAM_RRD_LEN);
1459         lo = value / 8;
1460         hi = value * 7 / 8;
1461         if (lo < 2)
1462                 lo = 2;
1463         if (hi < lo)
1464                 hi = lo + 3;
1465         value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) |
1466                 ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT);
1467         iowrite32(value, hw->hw_addr + REG_RXQ_RRD_PAUSE_THRESH);
1468 }
1469
1470 /*
1471  * atl1_configure - Configure Transmit&Receive Unit after Reset
1472  * @adapter: board private structure
1473  *
1474  * Configure the Tx /Rx unit of the MAC after a reset.
1475  */
1476 static u32 atl1_configure(struct atl1_adapter *adapter)
1477 {
1478         struct atl1_hw *hw = &adapter->hw;
1479         u32 value;
1480
1481         /* clear interrupt status */
1482         iowrite32(0xffffffff, adapter->hw.hw_addr + REG_ISR);
1483
1484         /* set MAC Address */
1485         value = (((u32) hw->mac_addr[2]) << 24) |
1486                 (((u32) hw->mac_addr[3]) << 16) |
1487                 (((u32) hw->mac_addr[4]) << 8) |
1488                 (((u32) hw->mac_addr[5]));
1489         iowrite32(value, hw->hw_addr + REG_MAC_STA_ADDR);
1490         value = (((u32) hw->mac_addr[0]) << 8) | (((u32) hw->mac_addr[1]));
1491         iowrite32(value, hw->hw_addr + (REG_MAC_STA_ADDR + 4));
1492
1493         /* tx / rx ring */
1494
1495         /* HI base address */
1496         iowrite32((u32) ((adapter->tpd_ring.dma & 0xffffffff00000000ULL) >> 32),
1497                 hw->hw_addr + REG_DESC_BASE_ADDR_HI);
1498         /* LO base address */
1499         iowrite32((u32) (adapter->rfd_ring.dma & 0x00000000ffffffffULL),
1500                 hw->hw_addr + REG_DESC_RFD_ADDR_LO);
1501         iowrite32((u32) (adapter->rrd_ring.dma & 0x00000000ffffffffULL),
1502                 hw->hw_addr + REG_DESC_RRD_ADDR_LO);
1503         iowrite32((u32) (adapter->tpd_ring.dma & 0x00000000ffffffffULL),
1504                 hw->hw_addr + REG_DESC_TPD_ADDR_LO);
1505         iowrite32((u32) (adapter->cmb.dma & 0x00000000ffffffffULL),
1506                 hw->hw_addr + REG_DESC_CMB_ADDR_LO);
1507         iowrite32((u32) (adapter->smb.dma & 0x00000000ffffffffULL),
1508                 hw->hw_addr + REG_DESC_SMB_ADDR_LO);
1509
1510         /* element count */
1511         value = adapter->rrd_ring.count;
1512         value <<= 16;
1513         value += adapter->rfd_ring.count;
1514         iowrite32(value, hw->hw_addr + REG_DESC_RFD_RRD_RING_SIZE);
1515         iowrite32(adapter->tpd_ring.count, hw->hw_addr +
1516                 REG_DESC_TPD_RING_SIZE);
1517
1518         /* Load Ptr */
1519         iowrite32(1, hw->hw_addr + REG_LOAD_PTR);
1520
1521         /* config Mailbox */
1522         value = ((atomic_read(&adapter->tpd_ring.next_to_use)
1523                   & MB_TPD_PROD_INDX_MASK) << MB_TPD_PROD_INDX_SHIFT) |
1524                 ((atomic_read(&adapter->rrd_ring.next_to_clean)
1525                 & MB_RRD_CONS_INDX_MASK) << MB_RRD_CONS_INDX_SHIFT) |
1526                 ((atomic_read(&adapter->rfd_ring.next_to_use)
1527                 & MB_RFD_PROD_INDX_MASK) << MB_RFD_PROD_INDX_SHIFT);
1528         iowrite32(value, hw->hw_addr + REG_MAILBOX);
1529
1530         /* config IPG/IFG */
1531         value = (((u32) hw->ipgt & MAC_IPG_IFG_IPGT_MASK)
1532                  << MAC_IPG_IFG_IPGT_SHIFT) |
1533                 (((u32) hw->min_ifg & MAC_IPG_IFG_MIFG_MASK)
1534                 << MAC_IPG_IFG_MIFG_SHIFT) |
1535                 (((u32) hw->ipgr1 & MAC_IPG_IFG_IPGR1_MASK)
1536                 << MAC_IPG_IFG_IPGR1_SHIFT) |
1537                 (((u32) hw->ipgr2 & MAC_IPG_IFG_IPGR2_MASK)
1538                 << MAC_IPG_IFG_IPGR2_SHIFT);
1539         iowrite32(value, hw->hw_addr + REG_MAC_IPG_IFG);
1540
1541         /* config  Half-Duplex Control */
1542         value = ((u32) hw->lcol & MAC_HALF_DUPLX_CTRL_LCOL_MASK) |
1543                 (((u32) hw->max_retry & MAC_HALF_DUPLX_CTRL_RETRY_MASK)
1544                 << MAC_HALF_DUPLX_CTRL_RETRY_SHIFT) |
1545                 MAC_HALF_DUPLX_CTRL_EXC_DEF_EN |
1546                 (0xa << MAC_HALF_DUPLX_CTRL_ABEBT_SHIFT) |
1547                 (((u32) hw->jam_ipg & MAC_HALF_DUPLX_CTRL_JAMIPG_MASK)
1548                 << MAC_HALF_DUPLX_CTRL_JAMIPG_SHIFT);
1549         iowrite32(value, hw->hw_addr + REG_MAC_HALF_DUPLX_CTRL);
1550
1551         /* set Interrupt Moderator Timer */
1552         iowrite16(adapter->imt, hw->hw_addr + REG_IRQ_MODU_TIMER_INIT);
1553         iowrite32(MASTER_CTRL_ITIMER_EN, hw->hw_addr + REG_MASTER_CTRL);
1554
1555         /* set Interrupt Clear Timer */
1556         iowrite16(adapter->ict, hw->hw_addr + REG_CMBDISDMA_TIMER);
1557
1558         /* set max frame size hw will accept */
1559         iowrite32(hw->max_frame_size, hw->hw_addr + REG_MTU);
1560
1561         /* jumbo size & rrd retirement timer */
1562         value = (((u32) hw->rx_jumbo_th & RXQ_JMBOSZ_TH_MASK)
1563                  << RXQ_JMBOSZ_TH_SHIFT) |
1564                 (((u32) hw->rx_jumbo_lkah & RXQ_JMBO_LKAH_MASK)
1565                 << RXQ_JMBO_LKAH_SHIFT) |
1566                 (((u32) hw->rrd_ret_timer & RXQ_RRD_TIMER_MASK)
1567                 << RXQ_RRD_TIMER_SHIFT);
1568         iowrite32(value, hw->hw_addr + REG_RXQ_JMBOSZ_RRDTIM);
1569
1570         /* Flow Control */
1571         switch (hw->dev_rev) {
1572         case 0x8001:
1573         case 0x9001:
1574         case 0x9002:
1575         case 0x9003:
1576                 set_flow_ctrl_old(adapter);
1577                 break;
1578         default:
1579                 set_flow_ctrl_new(hw);
1580                 break;
1581         }
1582
1583         /* config TXQ */
1584         value = (((u32) hw->tpd_burst & TXQ_CTRL_TPD_BURST_NUM_MASK)
1585                  << TXQ_CTRL_TPD_BURST_NUM_SHIFT) |
1586                 (((u32) hw->txf_burst & TXQ_CTRL_TXF_BURST_NUM_MASK)
1587                 << TXQ_CTRL_TXF_BURST_NUM_SHIFT) |
1588                 (((u32) hw->tpd_fetch_th & TXQ_CTRL_TPD_FETCH_TH_MASK)
1589                 << TXQ_CTRL_TPD_FETCH_TH_SHIFT) | TXQ_CTRL_ENH_MODE |
1590                 TXQ_CTRL_EN;
1591         iowrite32(value, hw->hw_addr + REG_TXQ_CTRL);
1592
1593         /* min tpd fetch gap & tx jumbo packet size threshold for taskoffload */
1594         value = (((u32) hw->tx_jumbo_task_th & TX_JUMBO_TASK_TH_MASK)
1595                 << TX_JUMBO_TASK_TH_SHIFT) |
1596                 (((u32) hw->tpd_fetch_gap & TX_TPD_MIN_IPG_MASK)
1597                 << TX_TPD_MIN_IPG_SHIFT);
1598         iowrite32(value, hw->hw_addr + REG_TX_JUMBO_TASK_TH_TPD_IPG);
1599
1600         /* config RXQ */
1601         value = (((u32) hw->rfd_burst & RXQ_CTRL_RFD_BURST_NUM_MASK)
1602                 << RXQ_CTRL_RFD_BURST_NUM_SHIFT) |
1603                 (((u32) hw->rrd_burst & RXQ_CTRL_RRD_BURST_THRESH_MASK)
1604                 << RXQ_CTRL_RRD_BURST_THRESH_SHIFT) |
1605                 (((u32) hw->rfd_fetch_gap & RXQ_CTRL_RFD_PREF_MIN_IPG_MASK)
1606                 << RXQ_CTRL_RFD_PREF_MIN_IPG_SHIFT) | RXQ_CTRL_CUT_THRU_EN |
1607                 RXQ_CTRL_EN;
1608         iowrite32(value, hw->hw_addr + REG_RXQ_CTRL);
1609
1610         /* config DMA Engine */
1611         value = ((((u32) hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK)
1612                 << DMA_CTRL_DMAR_BURST_LEN_SHIFT) |
1613                 ((((u32) hw->dmaw_block) & DMA_CTRL_DMAW_BURST_LEN_MASK)
1614                 << DMA_CTRL_DMAW_BURST_LEN_SHIFT) | DMA_CTRL_DMAR_EN |
1615                 DMA_CTRL_DMAW_EN;
1616         value |= (u32) hw->dma_ord;
1617         if (atl1_rcb_128 == hw->rcb_value)
1618                 value |= DMA_CTRL_RCB_VALUE;
1619         iowrite32(value, hw->hw_addr + REG_DMA_CTRL);
1620
1621         /* config CMB / SMB */
1622         value = (hw->cmb_tpd > adapter->tpd_ring.count) ?
1623                 hw->cmb_tpd : adapter->tpd_ring.count;
1624         value <<= 16;
1625         value |= hw->cmb_rrd;
1626         iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TH);
1627         value = hw->cmb_rx_timer | ((u32) hw->cmb_tx_timer << 16);
1628         iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TIMER);
1629         iowrite32(hw->smb_timer, hw->hw_addr + REG_SMB_TIMER);
1630
1631         /* --- enable CMB / SMB */
1632         value = CSMB_CTRL_CMB_EN | CSMB_CTRL_SMB_EN;
1633         iowrite32(value, hw->hw_addr + REG_CSMB_CTRL);
1634
1635         value = ioread32(adapter->hw.hw_addr + REG_ISR);
1636         if (unlikely((value & ISR_PHY_LINKDOWN) != 0))
1637                 value = 1;      /* config failed */
1638         else
1639                 value = 0;
1640
1641         /* clear all interrupt status */
1642         iowrite32(0x3fffffff, adapter->hw.hw_addr + REG_ISR);
1643         iowrite32(0, adapter->hw.hw_addr + REG_ISR);
1644         return value;
1645 }
1646
1647 /*
1648  * atl1_pcie_patch - Patch for PCIE module
1649  */
1650 static void atl1_pcie_patch(struct atl1_adapter *adapter)
1651 {
1652         u32 value;
1653
1654         /* much vendor magic here */
1655         value = 0x6500;
1656         iowrite32(value, adapter->hw.hw_addr + 0x12FC);
1657         /* pcie flow control mode change */
1658         value = ioread32(adapter->hw.hw_addr + 0x1008);
1659         value |= 0x8000;
1660         iowrite32(value, adapter->hw.hw_addr + 0x1008);
1661 }
1662
1663 /*
1664  * When ACPI resume on some VIA MotherBoard, the Interrupt Disable bit/0x400
1665  * on PCI Command register is disable.
1666  * The function enable this bit.
1667  * Brackett, 2006/03/15
1668  */
1669 static void atl1_via_workaround(struct atl1_adapter *adapter)
1670 {
1671         unsigned long value;
1672
1673         value = ioread16(adapter->hw.hw_addr + PCI_COMMAND);
1674         if (value & PCI_COMMAND_INTX_DISABLE)
1675                 value &= ~PCI_COMMAND_INTX_DISABLE;
1676         iowrite32(value, adapter->hw.hw_addr + PCI_COMMAND);
1677 }
1678
1679 static void atl1_inc_smb(struct atl1_adapter *adapter)
1680 {
1681         struct net_device *netdev = adapter->netdev;
1682         struct stats_msg_block *smb = adapter->smb.smb;
1683
1684         /* Fill out the OS statistics structure */
1685         adapter->soft_stats.rx_packets += smb->rx_ok;
1686         adapter->soft_stats.tx_packets += smb->tx_ok;
1687         adapter->soft_stats.rx_bytes += smb->rx_byte_cnt;
1688         adapter->soft_stats.tx_bytes += smb->tx_byte_cnt;
1689         adapter->soft_stats.multicast += smb->rx_mcast;
1690         adapter->soft_stats.collisions += (smb->tx_1_col + smb->tx_2_col * 2 +
1691                 smb->tx_late_col + smb->tx_abort_col * adapter->hw.max_retry);
1692
1693         /* Rx Errors */
1694         adapter->soft_stats.rx_errors += (smb->rx_frag + smb->rx_fcs_err +
1695                 smb->rx_len_err + smb->rx_sz_ov + smb->rx_rxf_ov +
1696                 smb->rx_rrd_ov + smb->rx_align_err);
1697         adapter->soft_stats.rx_fifo_errors += smb->rx_rxf_ov;
1698         adapter->soft_stats.rx_length_errors += smb->rx_len_err;
1699         adapter->soft_stats.rx_crc_errors += smb->rx_fcs_err;
1700         adapter->soft_stats.rx_frame_errors += smb->rx_align_err;
1701         adapter->soft_stats.rx_missed_errors += (smb->rx_rrd_ov +
1702                 smb->rx_rxf_ov);
1703
1704         adapter->soft_stats.rx_pause += smb->rx_pause;
1705         adapter->soft_stats.rx_rrd_ov += smb->rx_rrd_ov;
1706         adapter->soft_stats.rx_trunc += smb->rx_sz_ov;
1707
1708         /* Tx Errors */
1709         adapter->soft_stats.tx_errors += (smb->tx_late_col +
1710                 smb->tx_abort_col + smb->tx_underrun + smb->tx_trunc);
1711         adapter->soft_stats.tx_fifo_errors += smb->tx_underrun;
1712         adapter->soft_stats.tx_aborted_errors += smb->tx_abort_col;
1713         adapter->soft_stats.tx_window_errors += smb->tx_late_col;
1714
1715         adapter->soft_stats.excecol += smb->tx_abort_col;
1716         adapter->soft_stats.deffer += smb->tx_defer;
1717         adapter->soft_stats.scc += smb->tx_1_col;
1718         adapter->soft_stats.mcc += smb->tx_2_col;
1719         adapter->soft_stats.latecol += smb->tx_late_col;
1720         adapter->soft_stats.tx_underun += smb->tx_underrun;
1721         adapter->soft_stats.tx_trunc += smb->tx_trunc;
1722         adapter->soft_stats.tx_pause += smb->tx_pause;
1723
1724         netdev->stats.rx_packets = adapter->soft_stats.rx_packets;
1725         netdev->stats.tx_packets = adapter->soft_stats.tx_packets;
1726         netdev->stats.rx_bytes = adapter->soft_stats.rx_bytes;
1727         netdev->stats.tx_bytes = adapter->soft_stats.tx_bytes;
1728         netdev->stats.multicast = adapter->soft_stats.multicast;
1729         netdev->stats.collisions = adapter->soft_stats.collisions;
1730         netdev->stats.rx_errors = adapter->soft_stats.rx_errors;
1731         netdev->stats.rx_over_errors =
1732                 adapter->soft_stats.rx_missed_errors;
1733         netdev->stats.rx_length_errors =
1734                 adapter->soft_stats.rx_length_errors;
1735         netdev->stats.rx_crc_errors = adapter->soft_stats.rx_crc_errors;
1736         netdev->stats.rx_frame_errors =
1737                 adapter->soft_stats.rx_frame_errors;
1738         netdev->stats.rx_fifo_errors = adapter->soft_stats.rx_fifo_errors;
1739         netdev->stats.rx_missed_errors =
1740                 adapter->soft_stats.rx_missed_errors;
1741         netdev->stats.tx_errors = adapter->soft_stats.tx_errors;
1742         netdev->stats.tx_fifo_errors = adapter->soft_stats.tx_fifo_errors;
1743         netdev->stats.tx_aborted_errors =
1744                 adapter->soft_stats.tx_aborted_errors;
1745         netdev->stats.tx_window_errors =
1746                 adapter->soft_stats.tx_window_errors;
1747         netdev->stats.tx_carrier_errors =
1748                 adapter->soft_stats.tx_carrier_errors;
1749 }
1750
1751 static void atl1_update_mailbox(struct atl1_adapter *adapter)
1752 {
1753         unsigned long flags;
1754         u32 tpd_next_to_use;
1755         u32 rfd_next_to_use;
1756         u32 rrd_next_to_clean;
1757         u32 value;
1758
1759         spin_lock_irqsave(&adapter->mb_lock, flags);
1760
1761         tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use);
1762         rfd_next_to_use = atomic_read(&adapter->rfd_ring.next_to_use);
1763         rrd_next_to_clean = atomic_read(&adapter->rrd_ring.next_to_clean);
1764
1765         value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) <<
1766                 MB_RFD_PROD_INDX_SHIFT) |
1767                 ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) <<
1768                 MB_RRD_CONS_INDX_SHIFT) |
1769                 ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) <<
1770                 MB_TPD_PROD_INDX_SHIFT);
1771         iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX);
1772
1773         spin_unlock_irqrestore(&adapter->mb_lock, flags);
1774 }
1775
1776 static void atl1_clean_alloc_flag(struct atl1_adapter *adapter,
1777         struct rx_return_desc *rrd, u16 offset)
1778 {
1779         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1780
1781         while (rfd_ring->next_to_clean != (rrd->buf_indx + offset)) {
1782                 rfd_ring->buffer_info[rfd_ring->next_to_clean].alloced = 0;
1783                 if (++rfd_ring->next_to_clean == rfd_ring->count) {
1784                         rfd_ring->next_to_clean = 0;
1785                 }
1786         }
1787 }
1788
1789 static void atl1_update_rfd_index(struct atl1_adapter *adapter,
1790         struct rx_return_desc *rrd)
1791 {
1792         u16 num_buf;
1793
1794         num_buf = (rrd->xsz.xsum_sz.pkt_size + adapter->rx_buffer_len - 1) /
1795                 adapter->rx_buffer_len;
1796         if (rrd->num_buf == num_buf)
1797                 /* clean alloc flag for bad rrd */
1798                 atl1_clean_alloc_flag(adapter, rrd, num_buf);
1799 }
1800
1801 static void atl1_rx_checksum(struct atl1_adapter *adapter,
1802         struct rx_return_desc *rrd, struct sk_buff *skb)
1803 {
1804         struct pci_dev *pdev = adapter->pdev;
1805
1806         /*
1807          * The L1 hardware contains a bug that erroneously sets the
1808          * PACKET_FLAG_ERR and ERR_FLAG_L4_CHKSUM bits whenever a
1809          * fragmented IP packet is received, even though the packet
1810          * is perfectly valid and its checksum is correct. There's
1811          * no way to distinguish between one of these good packets
1812          * and a packet that actually contains a TCP/UDP checksum
1813          * error, so all we can do is allow it to be handed up to
1814          * the higher layers and let it be sorted out there.
1815          */
1816
1817         skb_checksum_none_assert(skb);
1818
1819         if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) {
1820                 if (rrd->err_flg & (ERR_FLAG_CRC | ERR_FLAG_TRUNC |
1821                                         ERR_FLAG_CODE | ERR_FLAG_OV)) {
1822                         adapter->hw_csum_err++;
1823                         if (netif_msg_rx_err(adapter))
1824                                 dev_printk(KERN_DEBUG, &pdev->dev,
1825                                         "rx checksum error\n");
1826                         return;
1827                 }
1828         }
1829
1830         /* not IPv4 */
1831         if (!(rrd->pkt_flg & PACKET_FLAG_IPV4))
1832                 /* checksum is invalid, but it's not an IPv4 pkt, so ok */
1833                 return;
1834
1835         /* IPv4 packet */
1836         if (likely(!(rrd->err_flg &
1837                 (ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM)))) {
1838                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1839                 adapter->hw_csum_good++;
1840                 return;
1841         }
1842 }
1843
1844 /*
1845  * atl1_alloc_rx_buffers - Replace used receive buffers
1846  * @adapter: address of board private structure
1847  */
1848 static u16 atl1_alloc_rx_buffers(struct atl1_adapter *adapter)
1849 {
1850         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1851         struct pci_dev *pdev = adapter->pdev;
1852         struct page *page;
1853         unsigned long offset;
1854         struct atl1_buffer *buffer_info, *next_info;
1855         struct sk_buff *skb;
1856         u16 num_alloc = 0;
1857         u16 rfd_next_to_use, next_next;
1858         struct rx_free_desc *rfd_desc;
1859
1860         next_next = rfd_next_to_use = atomic_read(&rfd_ring->next_to_use);
1861         if (++next_next == rfd_ring->count)
1862                 next_next = 0;
1863         buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
1864         next_info = &rfd_ring->buffer_info[next_next];
1865
1866         while (!buffer_info->alloced && !next_info->alloced) {
1867                 if (buffer_info->skb) {
1868                         buffer_info->alloced = 1;
1869                         goto next;
1870                 }
1871
1872                 rfd_desc = ATL1_RFD_DESC(rfd_ring, rfd_next_to_use);
1873
1874                 skb = netdev_alloc_skb_ip_align(adapter->netdev,
1875                                                 adapter->rx_buffer_len);
1876                 if (unlikely(!skb)) {
1877                         /* Better luck next round */
1878                         adapter->netdev->stats.rx_dropped++;
1879                         break;
1880                 }
1881
1882                 buffer_info->alloced = 1;
1883                 buffer_info->skb = skb;
1884                 buffer_info->length = (u16) adapter->rx_buffer_len;
1885                 page = virt_to_page(skb->data);
1886                 offset = (unsigned long)skb->data & ~PAGE_MASK;
1887                 buffer_info->dma = pci_map_page(pdev, page, offset,
1888                                                 adapter->rx_buffer_len,
1889                                                 PCI_DMA_FROMDEVICE);
1890                 rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
1891                 rfd_desc->buf_len = cpu_to_le16(adapter->rx_buffer_len);
1892                 rfd_desc->coalese = 0;
1893
1894 next:
1895                 rfd_next_to_use = next_next;
1896                 if (unlikely(++next_next == rfd_ring->count))
1897                         next_next = 0;
1898
1899                 buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
1900                 next_info = &rfd_ring->buffer_info[next_next];
1901                 num_alloc++;
1902         }
1903
1904         if (num_alloc) {
1905                 /*
1906                  * Force memory writes to complete before letting h/w
1907                  * know there are new descriptors to fetch.  (Only
1908                  * applicable for weak-ordered memory model archs,
1909                  * such as IA-64).
1910                  */
1911                 wmb();
1912                 atomic_set(&rfd_ring->next_to_use, (int)rfd_next_to_use);
1913         }
1914         return num_alloc;
1915 }
1916
1917 static void atl1_intr_rx(struct atl1_adapter *adapter)
1918 {
1919         int i, count;
1920         u16 length;
1921         u16 rrd_next_to_clean;
1922         u32 value;
1923         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1924         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1925         struct atl1_buffer *buffer_info;
1926         struct rx_return_desc *rrd;
1927         struct sk_buff *skb;
1928
1929         count = 0;
1930
1931         rrd_next_to_clean = atomic_read(&rrd_ring->next_to_clean);
1932
1933         while (1) {
1934                 rrd = ATL1_RRD_DESC(rrd_ring, rrd_next_to_clean);
1935                 i = 1;
1936                 if (likely(rrd->xsz.valid)) {   /* packet valid */
1937 chk_rrd:
1938                         /* check rrd status */
1939                         if (likely(rrd->num_buf == 1))
1940                                 goto rrd_ok;
1941                         else if (netif_msg_rx_err(adapter)) {
1942                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1943                                         "unexpected RRD buffer count\n");
1944                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1945                                         "rx_buf_len = %d\n",
1946                                         adapter->rx_buffer_len);
1947                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1948                                         "RRD num_buf = %d\n",
1949                                         rrd->num_buf);
1950                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1951                                         "RRD pkt_len = %d\n",
1952                                         rrd->xsz.xsum_sz.pkt_size);
1953                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1954                                         "RRD pkt_flg = 0x%08X\n",
1955                                         rrd->pkt_flg);
1956                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1957                                         "RRD err_flg = 0x%08X\n",
1958                                         rrd->err_flg);
1959                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1960                                         "RRD vlan_tag = 0x%08X\n",
1961                                         rrd->vlan_tag);
1962                         }
1963
1964                         /* rrd seems to be bad */
1965                         if (unlikely(i-- > 0)) {
1966                                 /* rrd may not be DMAed completely */
1967                                 udelay(1);
1968                                 goto chk_rrd;
1969                         }
1970                         /* bad rrd */
1971                         if (netif_msg_rx_err(adapter))
1972                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1973                                         "bad RRD\n");
1974                         /* see if update RFD index */
1975                         if (rrd->num_buf > 1)
1976                                 atl1_update_rfd_index(adapter, rrd);
1977
1978                         /* update rrd */
1979                         rrd->xsz.valid = 0;
1980                         if (++rrd_next_to_clean == rrd_ring->count)
1981                                 rrd_next_to_clean = 0;
1982                         count++;
1983                         continue;
1984                 } else {        /* current rrd still not be updated */
1985
1986                         break;
1987                 }
1988 rrd_ok:
1989                 /* clean alloc flag for bad rrd */
1990                 atl1_clean_alloc_flag(adapter, rrd, 0);
1991
1992                 buffer_info = &rfd_ring->buffer_info[rrd->buf_indx];
1993                 if (++rfd_ring->next_to_clean == rfd_ring->count)
1994                         rfd_ring->next_to_clean = 0;
1995
1996                 /* update rrd next to clean */
1997                 if (++rrd_next_to_clean == rrd_ring->count)
1998                         rrd_next_to_clean = 0;
1999                 count++;
2000
2001                 if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) {
2002                         if (!(rrd->err_flg &
2003                                 (ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM
2004                                 | ERR_FLAG_LEN))) {
2005                                 /* packet error, don't need upstream */
2006                                 buffer_info->alloced = 0;
2007                                 rrd->xsz.valid = 0;
2008                                 continue;
2009                         }
2010                 }
2011
2012                 /* Good Receive */
2013                 pci_unmap_page(adapter->pdev, buffer_info->dma,
2014                                buffer_info->length, PCI_DMA_FROMDEVICE);
2015                 buffer_info->dma = 0;
2016                 skb = buffer_info->skb;
2017                 length = le16_to_cpu(rrd->xsz.xsum_sz.pkt_size);
2018
2019                 skb_put(skb, length - ETH_FCS_LEN);
2020
2021                 /* Receive Checksum Offload */
2022                 atl1_rx_checksum(adapter, rrd, skb);
2023                 skb->protocol = eth_type_trans(skb, adapter->netdev);
2024
2025                 if (rrd->pkt_flg & PACKET_FLAG_VLAN_INS) {
2026                         u16 vlan_tag = (rrd->vlan_tag >> 4) |
2027                                         ((rrd->vlan_tag & 7) << 13) |
2028                                         ((rrd->vlan_tag & 8) << 9);
2029
2030                         __vlan_hwaccel_put_tag(skb, vlan_tag);
2031                 }
2032                 netif_rx(skb);
2033
2034                 /* let protocol layer free skb */
2035                 buffer_info->skb = NULL;
2036                 buffer_info->alloced = 0;
2037                 rrd->xsz.valid = 0;
2038         }
2039
2040         atomic_set(&rrd_ring->next_to_clean, rrd_next_to_clean);
2041
2042         atl1_alloc_rx_buffers(adapter);
2043
2044         /* update mailbox ? */
2045         if (count) {
2046                 u32 tpd_next_to_use;
2047                 u32 rfd_next_to_use;
2048
2049                 spin_lock(&adapter->mb_lock);
2050
2051                 tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use);
2052                 rfd_next_to_use =
2053                     atomic_read(&adapter->rfd_ring.next_to_use);
2054                 rrd_next_to_clean =
2055                     atomic_read(&adapter->rrd_ring.next_to_clean);
2056                 value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) <<
2057                         MB_RFD_PROD_INDX_SHIFT) |
2058                         ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) <<
2059                         MB_RRD_CONS_INDX_SHIFT) |
2060                         ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) <<
2061                         MB_TPD_PROD_INDX_SHIFT);
2062                 iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX);
2063                 spin_unlock(&adapter->mb_lock);
2064         }
2065 }
2066
2067 static void atl1_intr_tx(struct atl1_adapter *adapter)
2068 {
2069         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2070         struct atl1_buffer *buffer_info;
2071         u16 sw_tpd_next_to_clean;
2072         u16 cmb_tpd_next_to_clean;
2073
2074         sw_tpd_next_to_clean = atomic_read(&tpd_ring->next_to_clean);
2075         cmb_tpd_next_to_clean = le16_to_cpu(adapter->cmb.cmb->tpd_cons_idx);
2076
2077         while (cmb_tpd_next_to_clean != sw_tpd_next_to_clean) {
2078                 buffer_info = &tpd_ring->buffer_info[sw_tpd_next_to_clean];
2079                 if (buffer_info->dma) {
2080                         pci_unmap_page(adapter->pdev, buffer_info->dma,
2081                                        buffer_info->length, PCI_DMA_TODEVICE);
2082                         buffer_info->dma = 0;
2083                 }
2084
2085                 if (buffer_info->skb) {
2086                         dev_kfree_skb_irq(buffer_info->skb);
2087                         buffer_info->skb = NULL;
2088                 }
2089
2090                 if (++sw_tpd_next_to_clean == tpd_ring->count)
2091                         sw_tpd_next_to_clean = 0;
2092         }
2093         atomic_set(&tpd_ring->next_to_clean, sw_tpd_next_to_clean);
2094
2095         if (netif_queue_stopped(adapter->netdev) &&
2096             netif_carrier_ok(adapter->netdev))
2097                 netif_wake_queue(adapter->netdev);
2098 }
2099
2100 static u16 atl1_tpd_avail(struct atl1_tpd_ring *tpd_ring)
2101 {
2102         u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean);
2103         u16 next_to_use = atomic_read(&tpd_ring->next_to_use);
2104         return (next_to_clean > next_to_use) ?
2105                 next_to_clean - next_to_use - 1 :
2106                 tpd_ring->count + next_to_clean - next_to_use - 1;
2107 }
2108
2109 static int atl1_tso(struct atl1_adapter *adapter, struct sk_buff *skb,
2110         struct tx_packet_desc *ptpd)
2111 {
2112         u8 hdr_len, ip_off;
2113         u32 real_len;
2114         int err;
2115
2116         if (skb_shinfo(skb)->gso_size) {
2117                 if (skb_header_cloned(skb)) {
2118                         err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
2119                         if (unlikely(err))
2120                                 return -1;
2121                 }
2122
2123                 if (skb->protocol == htons(ETH_P_IP)) {
2124                         struct iphdr *iph = ip_hdr(skb);
2125
2126                         real_len = (((unsigned char *)iph - skb->data) +
2127                                 ntohs(iph->tot_len));
2128                         if (real_len < skb->len)
2129                                 pskb_trim(skb, real_len);
2130                         hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb));
2131                         if (skb->len == hdr_len) {
2132                                 iph->check = 0;
2133                                 tcp_hdr(skb)->check =
2134                                         ~csum_tcpudp_magic(iph->saddr,
2135                                         iph->daddr, tcp_hdrlen(skb),
2136                                         IPPROTO_TCP, 0);
2137                                 ptpd->word3 |= (iph->ihl & TPD_IPHL_MASK) <<
2138                                         TPD_IPHL_SHIFT;
2139                                 ptpd->word3 |= ((tcp_hdrlen(skb) >> 2) &
2140                                         TPD_TCPHDRLEN_MASK) <<
2141                                         TPD_TCPHDRLEN_SHIFT;
2142                                 ptpd->word3 |= 1 << TPD_IP_CSUM_SHIFT;
2143                                 ptpd->word3 |= 1 << TPD_TCP_CSUM_SHIFT;
2144                                 return 1;
2145                         }
2146
2147                         iph->check = 0;
2148                         tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2149                                         iph->daddr, 0, IPPROTO_TCP, 0);
2150                         ip_off = (unsigned char *)iph -
2151                                 (unsigned char *) skb_network_header(skb);
2152                         if (ip_off == 8) /* 802.3-SNAP frame */
2153                                 ptpd->word3 |= 1 << TPD_ETHTYPE_SHIFT;
2154                         else if (ip_off != 0)
2155                                 return -2;
2156
2157                         ptpd->word3 |= (iph->ihl & TPD_IPHL_MASK) <<
2158                                 TPD_IPHL_SHIFT;
2159                         ptpd->word3 |= ((tcp_hdrlen(skb) >> 2) &
2160                                 TPD_TCPHDRLEN_MASK) << TPD_TCPHDRLEN_SHIFT;
2161                         ptpd->word3 |= (skb_shinfo(skb)->gso_size &
2162                                 TPD_MSS_MASK) << TPD_MSS_SHIFT;
2163                         ptpd->word3 |= 1 << TPD_SEGMENT_EN_SHIFT;
2164                         return 3;
2165                 }
2166         }
2167         return false;
2168 }
2169
2170 static int atl1_tx_csum(struct atl1_adapter *adapter, struct sk_buff *skb,
2171         struct tx_packet_desc *ptpd)
2172 {
2173         u8 css, cso;
2174
2175         if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
2176                 css = skb_checksum_start_offset(skb);
2177                 cso = css + (u8) skb->csum_offset;
2178                 if (unlikely(css & 0x1)) {
2179                         /* L1 hardware requires an even number here */
2180                         if (netif_msg_tx_err(adapter))
2181                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2182                                         "payload offset not an even number\n");
2183                         return -1;
2184                 }
2185                 ptpd->word3 |= (css & TPD_PLOADOFFSET_MASK) <<
2186                         TPD_PLOADOFFSET_SHIFT;
2187                 ptpd->word3 |= (cso & TPD_CCSUMOFFSET_MASK) <<
2188                         TPD_CCSUMOFFSET_SHIFT;
2189                 ptpd->word3 |= 1 << TPD_CUST_CSUM_EN_SHIFT;
2190                 return true;
2191         }
2192         return 0;
2193 }
2194
2195 static void atl1_tx_map(struct atl1_adapter *adapter, struct sk_buff *skb,
2196         struct tx_packet_desc *ptpd)
2197 {
2198         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2199         struct atl1_buffer *buffer_info;
2200         u16 buf_len = skb->len;
2201         struct page *page;
2202         unsigned long offset;
2203         unsigned int nr_frags;
2204         unsigned int f;
2205         int retval;
2206         u16 next_to_use;
2207         u16 data_len;
2208         u8 hdr_len;
2209
2210         buf_len -= skb->data_len;
2211         nr_frags = skb_shinfo(skb)->nr_frags;
2212         next_to_use = atomic_read(&tpd_ring->next_to_use);
2213         buffer_info = &tpd_ring->buffer_info[next_to_use];
2214         BUG_ON(buffer_info->skb);
2215         /* put skb in last TPD */
2216         buffer_info->skb = NULL;
2217
2218         retval = (ptpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK;
2219         if (retval) {
2220                 /* TSO */
2221                 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
2222                 buffer_info->length = hdr_len;
2223                 page = virt_to_page(skb->data);
2224                 offset = (unsigned long)skb->data & ~PAGE_MASK;
2225                 buffer_info->dma = pci_map_page(adapter->pdev, page,
2226                                                 offset, hdr_len,
2227                                                 PCI_DMA_TODEVICE);
2228
2229                 if (++next_to_use == tpd_ring->count)
2230                         next_to_use = 0;
2231
2232                 if (buf_len > hdr_len) {
2233                         int i, nseg;
2234
2235                         data_len = buf_len - hdr_len;
2236                         nseg = (data_len + ATL1_MAX_TX_BUF_LEN - 1) /
2237                                 ATL1_MAX_TX_BUF_LEN;
2238                         for (i = 0; i < nseg; i++) {
2239                                 buffer_info =
2240                                     &tpd_ring->buffer_info[next_to_use];
2241                                 buffer_info->skb = NULL;
2242                                 buffer_info->length =
2243                                     (ATL1_MAX_TX_BUF_LEN >=
2244                                      data_len) ? ATL1_MAX_TX_BUF_LEN : data_len;
2245                                 data_len -= buffer_info->length;
2246                                 page = virt_to_page(skb->data +
2247                                         (hdr_len + i * ATL1_MAX_TX_BUF_LEN));
2248                                 offset = (unsigned long)(skb->data +
2249                                         (hdr_len + i * ATL1_MAX_TX_BUF_LEN)) &
2250                                         ~PAGE_MASK;
2251                                 buffer_info->dma = pci_map_page(adapter->pdev,
2252                                         page, offset, buffer_info->length,
2253                                         PCI_DMA_TODEVICE);
2254                                 if (++next_to_use == tpd_ring->count)
2255                                         next_to_use = 0;
2256                         }
2257                 }
2258         } else {
2259                 /* not TSO */
2260                 buffer_info->length = buf_len;
2261                 page = virt_to_page(skb->data);
2262                 offset = (unsigned long)skb->data & ~PAGE_MASK;
2263                 buffer_info->dma = pci_map_page(adapter->pdev, page,
2264                         offset, buf_len, PCI_DMA_TODEVICE);
2265                 if (++next_to_use == tpd_ring->count)
2266                         next_to_use = 0;
2267         }
2268
2269         for (f = 0; f < nr_frags; f++) {
2270                 struct skb_frag_struct *frag;
2271                 u16 i, nseg;
2272
2273                 frag = &skb_shinfo(skb)->frags[f];
2274                 buf_len = frag->size;
2275
2276                 nseg = (buf_len + ATL1_MAX_TX_BUF_LEN - 1) /
2277                         ATL1_MAX_TX_BUF_LEN;
2278                 for (i = 0; i < nseg; i++) {
2279                         buffer_info = &tpd_ring->buffer_info[next_to_use];
2280                         BUG_ON(buffer_info->skb);
2281
2282                         buffer_info->skb = NULL;
2283                         buffer_info->length = (buf_len > ATL1_MAX_TX_BUF_LEN) ?
2284                                 ATL1_MAX_TX_BUF_LEN : buf_len;
2285                         buf_len -= buffer_info->length;
2286                         buffer_info->dma = skb_frag_dma_map(&adapter->pdev->dev,
2287                                 frag, i * ATL1_MAX_TX_BUF_LEN,
2288                                 buffer_info->length, PCI_DMA_TODEVICE);
2289
2290                         if (++next_to_use == tpd_ring->count)
2291                                 next_to_use = 0;
2292                 }
2293         }
2294
2295         /* last tpd's buffer-info */
2296         buffer_info->skb = skb;
2297 }
2298
2299 static void atl1_tx_queue(struct atl1_adapter *adapter, u16 count,
2300        struct tx_packet_desc *ptpd)
2301 {
2302         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2303         struct atl1_buffer *buffer_info;
2304         struct tx_packet_desc *tpd;
2305         u16 j;
2306         u32 val;
2307         u16 next_to_use = (u16) atomic_read(&tpd_ring->next_to_use);
2308
2309         for (j = 0; j < count; j++) {
2310                 buffer_info = &tpd_ring->buffer_info[next_to_use];
2311                 tpd = ATL1_TPD_DESC(&adapter->tpd_ring, next_to_use);
2312                 if (tpd != ptpd)
2313                         memcpy(tpd, ptpd, sizeof(struct tx_packet_desc));
2314                 tpd->buffer_addr = cpu_to_le64(buffer_info->dma);
2315                 tpd->word2 &= ~(TPD_BUFLEN_MASK << TPD_BUFLEN_SHIFT);
2316                 tpd->word2 |= (cpu_to_le16(buffer_info->length) &
2317                         TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT;
2318
2319                 /*
2320                  * if this is the first packet in a TSO chain, set
2321                  * TPD_HDRFLAG, otherwise, clear it.
2322                  */
2323                 val = (tpd->word3 >> TPD_SEGMENT_EN_SHIFT) &
2324                         TPD_SEGMENT_EN_MASK;
2325                 if (val) {
2326                         if (!j)
2327                                 tpd->word3 |= 1 << TPD_HDRFLAG_SHIFT;
2328                         else
2329                                 tpd->word3 &= ~(1 << TPD_HDRFLAG_SHIFT);
2330                 }
2331
2332                 if (j == (count - 1))
2333                         tpd->word3 |= 1 << TPD_EOP_SHIFT;
2334
2335                 if (++next_to_use == tpd_ring->count)
2336                         next_to_use = 0;
2337         }
2338         /*
2339          * Force memory writes to complete before letting h/w
2340          * know there are new descriptors to fetch.  (Only
2341          * applicable for weak-ordered memory model archs,
2342          * such as IA-64).
2343          */
2344         wmb();
2345
2346         atomic_set(&tpd_ring->next_to_use, next_to_use);
2347 }
2348
2349 static netdev_tx_t atl1_xmit_frame(struct sk_buff *skb,
2350                                          struct net_device *netdev)
2351 {
2352         struct atl1_adapter *adapter = netdev_priv(netdev);
2353         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2354         int len;
2355         int tso;
2356         int count = 1;
2357         int ret_val;
2358         struct tx_packet_desc *ptpd;
2359         u16 frag_size;
2360         u16 vlan_tag;
2361         unsigned int nr_frags = 0;
2362         unsigned int mss = 0;
2363         unsigned int f;
2364         unsigned int proto_hdr_len;
2365
2366         len = skb_headlen(skb);
2367
2368         if (unlikely(skb->len <= 0)) {
2369                 dev_kfree_skb_any(skb);
2370                 return NETDEV_TX_OK;
2371         }
2372
2373         nr_frags = skb_shinfo(skb)->nr_frags;
2374         for (f = 0; f < nr_frags; f++) {
2375                 frag_size = skb_shinfo(skb)->frags[f].size;
2376                 if (frag_size)
2377                         count += (frag_size + ATL1_MAX_TX_BUF_LEN - 1) /
2378                                 ATL1_MAX_TX_BUF_LEN;
2379         }
2380
2381         mss = skb_shinfo(skb)->gso_size;
2382         if (mss) {
2383                 if (skb->protocol == htons(ETH_P_IP)) {
2384                         proto_hdr_len = (skb_transport_offset(skb) +
2385                                          tcp_hdrlen(skb));
2386                         if (unlikely(proto_hdr_len > len)) {
2387                                 dev_kfree_skb_any(skb);
2388                                 return NETDEV_TX_OK;
2389                         }
2390                         /* need additional TPD ? */
2391                         if (proto_hdr_len != len)
2392                                 count += (len - proto_hdr_len +
2393                                         ATL1_MAX_TX_BUF_LEN - 1) /
2394                                         ATL1_MAX_TX_BUF_LEN;
2395                 }
2396         }
2397
2398         if (atl1_tpd_avail(&adapter->tpd_ring) < count) {
2399                 /* not enough descriptors */
2400                 netif_stop_queue(netdev);
2401                 if (netif_msg_tx_queued(adapter))
2402                         dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2403                                 "tx busy\n");
2404                 return NETDEV_TX_BUSY;
2405         }
2406
2407         ptpd = ATL1_TPD_DESC(tpd_ring,
2408                 (u16) atomic_read(&tpd_ring->next_to_use));
2409         memset(ptpd, 0, sizeof(struct tx_packet_desc));
2410
2411         if (vlan_tx_tag_present(skb)) {
2412                 vlan_tag = vlan_tx_tag_get(skb);
2413                 vlan_tag = (vlan_tag << 4) | (vlan_tag >> 13) |
2414                         ((vlan_tag >> 9) & 0x8);
2415                 ptpd->word3 |= 1 << TPD_INS_VL_TAG_SHIFT;
2416                 ptpd->word2 |= (vlan_tag & TPD_VLANTAG_MASK) <<
2417                         TPD_VLANTAG_SHIFT;
2418         }
2419
2420         tso = atl1_tso(adapter, skb, ptpd);
2421         if (tso < 0) {
2422                 dev_kfree_skb_any(skb);
2423                 return NETDEV_TX_OK;
2424         }
2425
2426         if (!tso) {
2427                 ret_val = atl1_tx_csum(adapter, skb, ptpd);
2428                 if (ret_val < 0) {
2429                         dev_kfree_skb_any(skb);
2430                         return NETDEV_TX_OK;
2431                 }
2432         }
2433
2434         atl1_tx_map(adapter, skb, ptpd);
2435         atl1_tx_queue(adapter, count, ptpd);
2436         atl1_update_mailbox(adapter);
2437         mmiowb();
2438         return NETDEV_TX_OK;
2439 }
2440
2441 /*
2442  * atl1_intr - Interrupt Handler
2443  * @irq: interrupt number
2444  * @data: pointer to a network interface device structure
2445  * @pt_regs: CPU registers structure
2446  */
2447 static irqreturn_t atl1_intr(int irq, void *data)
2448 {
2449         struct atl1_adapter *adapter = netdev_priv(data);
2450         u32 status;
2451         int max_ints = 10;
2452
2453         status = adapter->cmb.cmb->int_stats;
2454         if (!status)
2455                 return IRQ_NONE;
2456
2457         do {
2458                 /* clear CMB interrupt status at once */
2459                 adapter->cmb.cmb->int_stats = 0;
2460
2461                 if (status & ISR_GPHY)  /* clear phy status */
2462                         atlx_clear_phy_int(adapter);
2463
2464                 /* clear ISR status, and Enable CMB DMA/Disable Interrupt */
2465                 iowrite32(status | ISR_DIS_INT, adapter->hw.hw_addr + REG_ISR);
2466
2467                 /* check if SMB intr */
2468                 if (status & ISR_SMB)
2469                         atl1_inc_smb(adapter);
2470
2471                 /* check if PCIE PHY Link down */
2472                 if (status & ISR_PHY_LINKDOWN) {
2473                         if (netif_msg_intr(adapter))
2474                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2475                                         "pcie phy link down %x\n", status);
2476                         if (netif_running(adapter->netdev)) {   /* reset MAC */
2477                                 iowrite32(0, adapter->hw.hw_addr + REG_IMR);
2478                                 schedule_work(&adapter->pcie_dma_to_rst_task);
2479                                 return IRQ_HANDLED;
2480                         }
2481                 }
2482
2483                 /* check if DMA read/write error ? */
2484                 if (status & (ISR_DMAR_TO_RST | ISR_DMAW_TO_RST)) {
2485                         if (netif_msg_intr(adapter))
2486                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2487                                         "pcie DMA r/w error (status = 0x%x)\n",
2488                                         status);
2489                         iowrite32(0, adapter->hw.hw_addr + REG_IMR);
2490                         schedule_work(&adapter->pcie_dma_to_rst_task);
2491                         return IRQ_HANDLED;
2492                 }
2493
2494                 /* link event */
2495                 if (status & ISR_GPHY) {
2496                         adapter->soft_stats.tx_carrier_errors++;
2497                         atl1_check_for_link(adapter);
2498                 }
2499
2500                 /* transmit event */
2501                 if (status & ISR_CMB_TX)
2502                         atl1_intr_tx(adapter);
2503
2504                 /* rx exception */
2505                 if (unlikely(status & (ISR_RXF_OV | ISR_RFD_UNRUN |
2506                         ISR_RRD_OV | ISR_HOST_RFD_UNRUN |
2507                         ISR_HOST_RRD_OV | ISR_CMB_RX))) {
2508                         if (status & (ISR_RXF_OV | ISR_RFD_UNRUN |
2509                                 ISR_RRD_OV | ISR_HOST_RFD_UNRUN |
2510                                 ISR_HOST_RRD_OV))
2511                                 if (netif_msg_intr(adapter))
2512                                         dev_printk(KERN_DEBUG,
2513                                                 &adapter->pdev->dev,
2514                                                 "rx exception, ISR = 0x%x\n",
2515                                                 status);
2516                         atl1_intr_rx(adapter);
2517                 }
2518
2519                 if (--max_ints < 0)
2520                         break;
2521
2522         } while ((status = adapter->cmb.cmb->int_stats));
2523
2524         /* re-enable Interrupt */
2525         iowrite32(ISR_DIS_SMB | ISR_DIS_DMA, adapter->hw.hw_addr + REG_ISR);
2526         return IRQ_HANDLED;
2527 }
2528
2529
2530 /*
2531  * atl1_phy_config - Timer Call-back
2532  * @data: pointer to netdev cast into an unsigned long
2533  */
2534 static void atl1_phy_config(unsigned long data)
2535 {
2536         struct atl1_adapter *adapter = (struct atl1_adapter *)data;
2537         struct atl1_hw *hw = &adapter->hw;
2538         unsigned long flags;
2539
2540         spin_lock_irqsave(&adapter->lock, flags);
2541         adapter->phy_timer_pending = false;
2542         atl1_write_phy_reg(hw, MII_ADVERTISE, hw->mii_autoneg_adv_reg);
2543         atl1_write_phy_reg(hw, MII_ATLX_CR, hw->mii_1000t_ctrl_reg);
2544         atl1_write_phy_reg(hw, MII_BMCR, MII_CR_RESET | MII_CR_AUTO_NEG_EN);
2545         spin_unlock_irqrestore(&adapter->lock, flags);
2546 }
2547
2548 /*
2549  * Orphaned vendor comment left intact here:
2550  * <vendor comment>
2551  * If TPD Buffer size equal to 0, PCIE DMAR_TO_INT
2552  * will assert. We do soft reset <0x1400=1> according
2553  * with the SPEC. BUT, it seemes that PCIE or DMA
2554  * state-machine will not be reset. DMAR_TO_INT will
2555  * assert again and again.
2556  * </vendor comment>
2557  */
2558
2559 static int atl1_reset(struct atl1_adapter *adapter)
2560 {
2561         int ret;
2562         ret = atl1_reset_hw(&adapter->hw);
2563         if (ret)
2564                 return ret;
2565         return atl1_init_hw(&adapter->hw);
2566 }
2567
2568 static s32 atl1_up(struct atl1_adapter *adapter)
2569 {
2570         struct net_device *netdev = adapter->netdev;
2571         int err;
2572         int irq_flags = 0;
2573
2574         /* hardware has been reset, we need to reload some things */
2575         atlx_set_multi(netdev);
2576         atl1_init_ring_ptrs(adapter);
2577         atlx_restore_vlan(adapter);
2578         err = atl1_alloc_rx_buffers(adapter);
2579         if (unlikely(!err))
2580                 /* no RX BUFFER allocated */
2581                 return -ENOMEM;
2582
2583         if (unlikely(atl1_configure(adapter))) {
2584                 err = -EIO;
2585                 goto err_up;
2586         }
2587
2588         err = pci_enable_msi(adapter->pdev);
2589         if (err) {
2590                 if (netif_msg_ifup(adapter))
2591                         dev_info(&adapter->pdev->dev,
2592                                 "Unable to enable MSI: %d\n", err);
2593                 irq_flags |= IRQF_SHARED;
2594         }
2595
2596         err = request_irq(adapter->pdev->irq, atl1_intr, irq_flags,
2597                         netdev->name, netdev);
2598         if (unlikely(err))
2599                 goto err_up;
2600
2601         atlx_irq_enable(adapter);
2602         atl1_check_link(adapter);
2603         netif_start_queue(netdev);
2604         return 0;
2605
2606 err_up:
2607         pci_disable_msi(adapter->pdev);
2608         /* free rx_buffers */
2609         atl1_clean_rx_ring(adapter);
2610         return err;
2611 }
2612
2613 static void atl1_down(struct atl1_adapter *adapter)
2614 {
2615         struct net_device *netdev = adapter->netdev;
2616
2617         netif_stop_queue(netdev);
2618         del_timer_sync(&adapter->phy_config_timer);
2619         adapter->phy_timer_pending = false;
2620
2621         atlx_irq_disable(adapter);
2622         free_irq(adapter->pdev->irq, netdev);
2623         pci_disable_msi(adapter->pdev);
2624         atl1_reset_hw(&adapter->hw);
2625         adapter->cmb.cmb->int_stats = 0;
2626
2627         adapter->link_speed = SPEED_0;
2628         adapter->link_duplex = -1;
2629         netif_carrier_off(netdev);
2630
2631         atl1_clean_tx_ring(adapter);
2632         atl1_clean_rx_ring(adapter);
2633 }
2634
2635 static void atl1_tx_timeout_task(struct work_struct *work)
2636 {
2637         struct atl1_adapter *adapter =
2638                 container_of(work, struct atl1_adapter, tx_timeout_task);
2639         struct net_device *netdev = adapter->netdev;
2640
2641         netif_device_detach(netdev);
2642         atl1_down(adapter);
2643         atl1_up(adapter);
2644         netif_device_attach(netdev);
2645 }
2646
2647 /*
2648  * atl1_change_mtu - Change the Maximum Transfer Unit
2649  * @netdev: network interface device structure
2650  * @new_mtu: new value for maximum frame size
2651  *
2652  * Returns 0 on success, negative on failure
2653  */
2654 static int atl1_change_mtu(struct net_device *netdev, int new_mtu)
2655 {
2656         struct atl1_adapter *adapter = netdev_priv(netdev);
2657         int old_mtu = netdev->mtu;
2658         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2659
2660         if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) ||
2661             (max_frame > MAX_JUMBO_FRAME_SIZE)) {
2662                 if (netif_msg_link(adapter))
2663                         dev_warn(&adapter->pdev->dev, "invalid MTU setting\n");
2664                 return -EINVAL;
2665         }
2666
2667         adapter->hw.max_frame_size = max_frame;
2668         adapter->hw.tx_jumbo_task_th = (max_frame + 7) >> 3;
2669         adapter->rx_buffer_len = (max_frame + 7) & ~7;
2670         adapter->hw.rx_jumbo_th = adapter->rx_buffer_len / 8;
2671
2672         netdev->mtu = new_mtu;
2673         if ((old_mtu != new_mtu) && netif_running(netdev)) {
2674                 atl1_down(adapter);
2675                 atl1_up(adapter);
2676         }
2677
2678         return 0;
2679 }
2680
2681 /*
2682  * atl1_open - Called when a network interface is made active
2683  * @netdev: network interface device structure
2684  *
2685  * Returns 0 on success, negative value on failure
2686  *
2687  * The open entry point is called when a network interface is made
2688  * active by the system (IFF_UP).  At this point all resources needed
2689  * for transmit and receive operations are allocated, the interrupt
2690  * handler is registered with the OS, the watchdog timer is started,
2691  * and the stack is notified that the interface is ready.
2692  */
2693 static int atl1_open(struct net_device *netdev)
2694 {
2695         struct atl1_adapter *adapter = netdev_priv(netdev);
2696         int err;
2697
2698         netif_carrier_off(netdev);
2699
2700         /* allocate transmit descriptors */
2701         err = atl1_setup_ring_resources(adapter);
2702         if (err)
2703                 return err;
2704
2705         err = atl1_up(adapter);
2706         if (err)
2707                 goto err_up;
2708
2709         return 0;
2710
2711 err_up:
2712         atl1_reset(adapter);
2713         return err;
2714 }
2715
2716 /*
2717  * atl1_close - Disables a network interface
2718  * @netdev: network interface device structure
2719  *
2720  * Returns 0, this is not allowed to fail
2721  *
2722  * The close entry point is called when an interface is de-activated
2723  * by the OS.  The hardware is still under the drivers control, but
2724  * needs to be disabled.  A global MAC reset is issued to stop the
2725  * hardware, and all transmit and receive resources are freed.
2726  */
2727 static int atl1_close(struct net_device *netdev)
2728 {
2729         struct atl1_adapter *adapter = netdev_priv(netdev);
2730         atl1_down(adapter);
2731         atl1_free_ring_resources(adapter);
2732         return 0;
2733 }
2734
2735 #ifdef CONFIG_PM
2736 static int atl1_suspend(struct device *dev)
2737 {
2738         struct pci_dev *pdev = to_pci_dev(dev);
2739         struct net_device *netdev = pci_get_drvdata(pdev);
2740         struct atl1_adapter *adapter = netdev_priv(netdev);
2741         struct atl1_hw *hw = &adapter->hw;
2742         u32 ctrl = 0;
2743         u32 wufc = adapter->wol;
2744         u32 val;
2745         u16 speed;
2746         u16 duplex;
2747
2748         netif_device_detach(netdev);
2749         if (netif_running(netdev))
2750                 atl1_down(adapter);
2751
2752         atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl);
2753         atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl);
2754         val = ctrl & BMSR_LSTATUS;
2755         if (val)
2756                 wufc &= ~ATLX_WUFC_LNKC;
2757         if (!wufc)
2758                 goto disable_wol;
2759
2760         if (val) {
2761                 val = atl1_get_speed_and_duplex(hw, &speed, &duplex);
2762                 if (val) {
2763                         if (netif_msg_ifdown(adapter))
2764                                 dev_printk(KERN_DEBUG, &pdev->dev,
2765                                         "error getting speed/duplex\n");
2766                         goto disable_wol;
2767                 }
2768
2769                 ctrl = 0;
2770
2771                 /* enable magic packet WOL */
2772                 if (wufc & ATLX_WUFC_MAG)
2773                         ctrl |= (WOL_MAGIC_EN | WOL_MAGIC_PME_EN);
2774                 iowrite32(ctrl, hw->hw_addr + REG_WOL_CTRL);
2775                 ioread32(hw->hw_addr + REG_WOL_CTRL);
2776
2777                 /* configure the mac */
2778                 ctrl = MAC_CTRL_RX_EN;
2779                 ctrl |= ((u32)((speed == SPEED_1000) ? MAC_CTRL_SPEED_1000 :
2780                         MAC_CTRL_SPEED_10_100) << MAC_CTRL_SPEED_SHIFT);
2781                 if (duplex == FULL_DUPLEX)
2782                         ctrl |= MAC_CTRL_DUPLX;
2783                 ctrl |= (((u32)adapter->hw.preamble_len &
2784                         MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT);
2785                 __atlx_vlan_mode(netdev->features, &ctrl);
2786                 if (wufc & ATLX_WUFC_MAG)
2787                         ctrl |= MAC_CTRL_BC_EN;
2788                 iowrite32(ctrl, hw->hw_addr + REG_MAC_CTRL);
2789                 ioread32(hw->hw_addr + REG_MAC_CTRL);
2790
2791                 /* poke the PHY */
2792                 ctrl = ioread32(hw->hw_addr + REG_PCIE_PHYMISC);
2793                 ctrl |= PCIE_PHYMISC_FORCE_RCV_DET;
2794                 iowrite32(ctrl, hw->hw_addr + REG_PCIE_PHYMISC);
2795                 ioread32(hw->hw_addr + REG_PCIE_PHYMISC);
2796         } else {
2797                 ctrl |= (WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN);
2798                 iowrite32(ctrl, hw->hw_addr + REG_WOL_CTRL);
2799                 ioread32(hw->hw_addr + REG_WOL_CTRL);
2800                 iowrite32(0, hw->hw_addr + REG_MAC_CTRL);
2801                 ioread32(hw->hw_addr + REG_MAC_CTRL);
2802                 hw->phy_configured = false;
2803         }
2804
2805         return 0;
2806
2807  disable_wol:
2808         iowrite32(0, hw->hw_addr + REG_WOL_CTRL);
2809         ioread32(hw->hw_addr + REG_WOL_CTRL);
2810         ctrl = ioread32(hw->hw_addr + REG_PCIE_PHYMISC);
2811         ctrl |= PCIE_PHYMISC_FORCE_RCV_DET;
2812         iowrite32(ctrl, hw->hw_addr + REG_PCIE_PHYMISC);
2813         ioread32(hw->hw_addr + REG_PCIE_PHYMISC);
2814         hw->phy_configured = false;
2815
2816         return 0;
2817 }
2818
2819 static int atl1_resume(struct device *dev)
2820 {
2821         struct pci_dev *pdev = to_pci_dev(dev);
2822         struct net_device *netdev = pci_get_drvdata(pdev);
2823         struct atl1_adapter *adapter = netdev_priv(netdev);
2824
2825         iowrite32(0, adapter->hw.hw_addr + REG_WOL_CTRL);
2826
2827         atl1_reset_hw(&adapter->hw);
2828
2829         if (netif_running(netdev)) {
2830                 adapter->cmb.cmb->int_stats = 0;
2831                 atl1_up(adapter);
2832         }
2833         netif_device_attach(netdev);
2834
2835         return 0;
2836 }
2837
2838 static SIMPLE_DEV_PM_OPS(atl1_pm_ops, atl1_suspend, atl1_resume);
2839 #define ATL1_PM_OPS     (&atl1_pm_ops)
2840
2841 #else
2842
2843 static int atl1_suspend(struct device *dev) { return 0; }
2844
2845 #define ATL1_PM_OPS     NULL
2846 #endif
2847
2848 static void atl1_shutdown(struct pci_dev *pdev)
2849 {
2850         struct net_device *netdev = pci_get_drvdata(pdev);
2851         struct atl1_adapter *adapter = netdev_priv(netdev);
2852
2853         atl1_suspend(&pdev->dev);
2854         pci_wake_from_d3(pdev, adapter->wol);
2855         pci_set_power_state(pdev, PCI_D3hot);
2856 }
2857
2858 #ifdef CONFIG_NET_POLL_CONTROLLER
2859 static void atl1_poll_controller(struct net_device *netdev)
2860 {
2861         disable_irq(netdev->irq);
2862         atl1_intr(netdev->irq, netdev);
2863         enable_irq(netdev->irq);
2864 }
2865 #endif
2866
2867 static const struct net_device_ops atl1_netdev_ops = {
2868         .ndo_open               = atl1_open,
2869         .ndo_stop               = atl1_close,
2870         .ndo_start_xmit         = atl1_xmit_frame,
2871         .ndo_set_rx_mode        = atlx_set_multi,
2872         .ndo_validate_addr      = eth_validate_addr,
2873         .ndo_set_mac_address    = atl1_set_mac,
2874         .ndo_change_mtu         = atl1_change_mtu,
2875         .ndo_fix_features       = atlx_fix_features,
2876         .ndo_set_features       = atlx_set_features,
2877         .ndo_do_ioctl           = atlx_ioctl,
2878         .ndo_tx_timeout         = atlx_tx_timeout,
2879 #ifdef CONFIG_NET_POLL_CONTROLLER
2880         .ndo_poll_controller    = atl1_poll_controller,
2881 #endif
2882 };
2883
2884 /*
2885  * atl1_probe - Device Initialization Routine
2886  * @pdev: PCI device information struct
2887  * @ent: entry in atl1_pci_tbl
2888  *
2889  * Returns 0 on success, negative on failure
2890  *
2891  * atl1_probe initializes an adapter identified by a pci_dev structure.
2892  * The OS initialization, configuring of the adapter private structure,
2893  * and a hardware reset occur.
2894  */
2895 static int __devinit atl1_probe(struct pci_dev *pdev,
2896         const struct pci_device_id *ent)
2897 {
2898         struct net_device *netdev;
2899         struct atl1_adapter *adapter;
2900         static int cards_found = 0;
2901         int err;
2902
2903         err = pci_enable_device(pdev);
2904         if (err)
2905                 return err;
2906
2907         /*
2908          * The atl1 chip can DMA to 64-bit addresses, but it uses a single
2909          * shared register for the high 32 bits, so only a single, aligned,
2910          * 4 GB physical address range can be used at a time.
2911          *
2912          * Supporting 64-bit DMA on this hardware is more trouble than it's
2913          * worth.  It is far easier to limit to 32-bit DMA than update
2914          * various kernel subsystems to support the mechanics required by a
2915          * fixed-high-32-bit system.
2916          */
2917         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2918         if (err) {
2919                 dev_err(&pdev->dev, "no usable DMA configuration\n");
2920                 goto err_dma;
2921         }
2922         /*
2923          * Mark all PCI regions associated with PCI device
2924          * pdev as being reserved by owner atl1_driver_name
2925          */
2926         err = pci_request_regions(pdev, ATLX_DRIVER_NAME);
2927         if (err)
2928                 goto err_request_regions;
2929
2930         /*
2931          * Enables bus-mastering on the device and calls
2932          * pcibios_set_master to do the needed arch specific settings
2933          */
2934         pci_set_master(pdev);
2935
2936         netdev = alloc_etherdev(sizeof(struct atl1_adapter));
2937         if (!netdev) {
2938                 err = -ENOMEM;
2939                 goto err_alloc_etherdev;
2940         }
2941         SET_NETDEV_DEV(netdev, &pdev->dev);
2942
2943         pci_set_drvdata(pdev, netdev);
2944         adapter = netdev_priv(netdev);
2945         adapter->netdev = netdev;
2946         adapter->pdev = pdev;
2947         adapter->hw.back = adapter;
2948         adapter->msg_enable = netif_msg_init(debug, atl1_default_msg);
2949
2950         adapter->hw.hw_addr = pci_iomap(pdev, 0, 0);
2951         if (!adapter->hw.hw_addr) {
2952                 err = -EIO;
2953                 goto err_pci_iomap;
2954         }
2955         /* get device revision number */
2956         adapter->hw.dev_rev = ioread16(adapter->hw.hw_addr +
2957                 (REG_MASTER_CTRL + 2));
2958         if (netif_msg_probe(adapter))
2959                 dev_info(&pdev->dev, "version %s\n", ATLX_DRIVER_VERSION);
2960
2961         /* set default ring resource counts */
2962         adapter->rfd_ring.count = adapter->rrd_ring.count = ATL1_DEFAULT_RFD;
2963         adapter->tpd_ring.count = ATL1_DEFAULT_TPD;
2964
2965         adapter->mii.dev = netdev;
2966         adapter->mii.mdio_read = mdio_read;
2967         adapter->mii.mdio_write = mdio_write;
2968         adapter->mii.phy_id_mask = 0x1f;
2969         adapter->mii.reg_num_mask = 0x1f;
2970
2971         netdev->netdev_ops = &atl1_netdev_ops;
2972         netdev->watchdog_timeo = 5 * HZ;
2973
2974         netdev->ethtool_ops = &atl1_ethtool_ops;
2975         adapter->bd_number = cards_found;
2976
2977         /* setup the private structure */
2978         err = atl1_sw_init(adapter);
2979         if (err)
2980                 goto err_common;
2981
2982         netdev->features = NETIF_F_HW_CSUM;
2983         netdev->features |= NETIF_F_SG;
2984         netdev->features |= (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX);
2985
2986         netdev->hw_features = NETIF_F_HW_CSUM | NETIF_F_SG | NETIF_F_TSO |
2987                               NETIF_F_HW_VLAN_RX;
2988
2989         /* is this valid? see atl1_setup_mac_ctrl() */
2990         netdev->features |= NETIF_F_RXCSUM;
2991
2992         /*
2993          * patch for some L1 of old version,
2994          * the final version of L1 may not need these
2995          * patches
2996          */
2997         /* atl1_pcie_patch(adapter); */
2998
2999         /* really reset GPHY core */
3000         iowrite16(0, adapter->hw.hw_addr + REG_PHY_ENABLE);
3001
3002         /*
3003          * reset the controller to
3004          * put the device in a known good starting state
3005          */
3006         if (atl1_reset_hw(&adapter->hw)) {
3007                 err = -EIO;
3008                 goto err_common;
3009         }
3010
3011         /* copy the MAC address out of the EEPROM */
3012         atl1_read_mac_addr(&adapter->hw);
3013         memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
3014
3015         if (!is_valid_ether_addr(netdev->dev_addr)) {
3016                 err = -EIO;
3017                 goto err_common;
3018         }
3019
3020         atl1_check_options(adapter);
3021
3022         /* pre-init the MAC, and setup link */
3023         err = atl1_init_hw(&adapter->hw);
3024         if (err) {
3025                 err = -EIO;
3026                 goto err_common;
3027         }
3028
3029         atl1_pcie_patch(adapter);
3030         /* assume we have no link for now */
3031         netif_carrier_off(netdev);
3032
3033         setup_timer(&adapter->phy_config_timer, atl1_phy_config,
3034                     (unsigned long)adapter);
3035         adapter->phy_timer_pending = false;
3036
3037         INIT_WORK(&adapter->tx_timeout_task, atl1_tx_timeout_task);
3038
3039         INIT_WORK(&adapter->link_chg_task, atlx_link_chg_task);
3040
3041         INIT_WORK(&adapter->pcie_dma_to_rst_task, atl1_tx_timeout_task);
3042
3043         err = register_netdev(netdev);
3044         if (err)
3045                 goto err_common;
3046
3047         cards_found++;
3048         atl1_via_workaround(adapter);
3049         return 0;
3050
3051 err_common:
3052         pci_iounmap(pdev, adapter->hw.hw_addr);
3053 err_pci_iomap:
3054         free_netdev(netdev);
3055 err_alloc_etherdev:
3056         pci_release_regions(pdev);
3057 err_dma:
3058 err_request_regions:
3059         pci_disable_device(pdev);
3060         return err;
3061 }
3062
3063 /*
3064  * atl1_remove - Device Removal Routine
3065  * @pdev: PCI device information struct
3066  *
3067  * atl1_remove is called by the PCI subsystem to alert the driver
3068  * that it should release a PCI device.  The could be caused by a
3069  * Hot-Plug event, or because the driver is going to be removed from
3070  * memory.
3071  */
3072 static void __devexit atl1_remove(struct pci_dev *pdev)
3073 {
3074         struct net_device *netdev = pci_get_drvdata(pdev);
3075         struct atl1_adapter *adapter;
3076         /* Device not available. Return. */
3077         if (!netdev)
3078                 return;
3079
3080         adapter = netdev_priv(netdev);
3081
3082         /*
3083          * Some atl1 boards lack persistent storage for their MAC, and get it
3084          * from the BIOS during POST.  If we've been messing with the MAC
3085          * address, we need to save the permanent one.
3086          */
3087         if (memcmp(adapter->hw.mac_addr, adapter->hw.perm_mac_addr, ETH_ALEN)) {
3088                 memcpy(adapter->hw.mac_addr, adapter->hw.perm_mac_addr,
3089                         ETH_ALEN);
3090                 atl1_set_mac_addr(&adapter->hw);
3091         }
3092
3093         iowrite16(0, adapter->hw.hw_addr + REG_PHY_ENABLE);
3094         unregister_netdev(netdev);
3095         pci_iounmap(pdev, adapter->hw.hw_addr);
3096         pci_release_regions(pdev);
3097         free_netdev(netdev);
3098         pci_disable_device(pdev);
3099 }
3100
3101 static struct pci_driver atl1_driver = {
3102         .name = ATLX_DRIVER_NAME,
3103         .id_table = atl1_pci_tbl,
3104         .probe = atl1_probe,
3105         .remove = __devexit_p(atl1_remove),
3106         .shutdown = atl1_shutdown,
3107         .driver.pm = ATL1_PM_OPS,
3108 };
3109
3110 /*
3111  * atl1_exit_module - Driver Exit Cleanup Routine
3112  *
3113  * atl1_exit_module is called just before the driver is removed
3114  * from memory.
3115  */
3116 static void __exit atl1_exit_module(void)
3117 {
3118         pci_unregister_driver(&atl1_driver);
3119 }
3120
3121 /*
3122  * atl1_init_module - Driver Registration Routine
3123  *
3124  * atl1_init_module is the first routine called when the driver is
3125  * loaded. All it does is register with the PCI subsystem.
3126  */
3127 static int __init atl1_init_module(void)
3128 {
3129         return pci_register_driver(&atl1_driver);
3130 }
3131
3132 module_init(atl1_init_module);
3133 module_exit(atl1_exit_module);
3134
3135 struct atl1_stats {
3136         char stat_string[ETH_GSTRING_LEN];
3137         int sizeof_stat;
3138         int stat_offset;
3139 };
3140
3141 #define ATL1_STAT(m) \
3142         sizeof(((struct atl1_adapter *)0)->m), offsetof(struct atl1_adapter, m)
3143
3144 static struct atl1_stats atl1_gstrings_stats[] = {
3145         {"rx_packets", ATL1_STAT(soft_stats.rx_packets)},
3146         {"tx_packets", ATL1_STAT(soft_stats.tx_packets)},
3147         {"rx_bytes", ATL1_STAT(soft_stats.rx_bytes)},
3148         {"tx_bytes", ATL1_STAT(soft_stats.tx_bytes)},
3149         {"rx_errors", ATL1_STAT(soft_stats.rx_errors)},
3150         {"tx_errors", ATL1_STAT(soft_stats.tx_errors)},
3151         {"multicast", ATL1_STAT(soft_stats.multicast)},
3152         {"collisions", ATL1_STAT(soft_stats.collisions)},
3153         {"rx_length_errors", ATL1_STAT(soft_stats.rx_length_errors)},
3154         {"rx_over_errors", ATL1_STAT(soft_stats.rx_missed_errors)},
3155         {"rx_crc_errors", ATL1_STAT(soft_stats.rx_crc_errors)},
3156         {"rx_frame_errors", ATL1_STAT(soft_stats.rx_frame_errors)},
3157         {"rx_fifo_errors", ATL1_STAT(soft_stats.rx_fifo_errors)},
3158         {"rx_missed_errors", ATL1_STAT(soft_stats.rx_missed_errors)},
3159         {"tx_aborted_errors", ATL1_STAT(soft_stats.tx_aborted_errors)},
3160         {"tx_carrier_errors", ATL1_STAT(soft_stats.tx_carrier_errors)},
3161         {"tx_fifo_errors", ATL1_STAT(soft_stats.tx_fifo_errors)},
3162         {"tx_window_errors", ATL1_STAT(soft_stats.tx_window_errors)},
3163         {"tx_abort_exce_coll", ATL1_STAT(soft_stats.excecol)},
3164         {"tx_abort_late_coll", ATL1_STAT(soft_stats.latecol)},
3165         {"tx_deferred_ok", ATL1_STAT(soft_stats.deffer)},
3166         {"tx_single_coll_ok", ATL1_STAT(soft_stats.scc)},
3167         {"tx_multi_coll_ok", ATL1_STAT(soft_stats.mcc)},
3168         {"tx_underun", ATL1_STAT(soft_stats.tx_underun)},
3169         {"tx_trunc", ATL1_STAT(soft_stats.tx_trunc)},
3170         {"tx_pause", ATL1_STAT(soft_stats.tx_pause)},
3171         {"rx_pause", ATL1_STAT(soft_stats.rx_pause)},
3172         {"rx_rrd_ov", ATL1_STAT(soft_stats.rx_rrd_ov)},
3173         {"rx_trunc", ATL1_STAT(soft_stats.rx_trunc)}
3174 };
3175
3176 static void atl1_get_ethtool_stats(struct net_device *netdev,
3177         struct ethtool_stats *stats, u64 *data)
3178 {
3179         struct atl1_adapter *adapter = netdev_priv(netdev);
3180         int i;
3181         char *p;
3182
3183         for (i = 0; i < ARRAY_SIZE(atl1_gstrings_stats); i++) {
3184                 p = (char *)adapter+atl1_gstrings_stats[i].stat_offset;
3185                 data[i] = (atl1_gstrings_stats[i].sizeof_stat ==
3186                         sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
3187         }
3188
3189 }
3190
3191 static int atl1_get_sset_count(struct net_device *netdev, int sset)
3192 {
3193         switch (sset) {
3194         case ETH_SS_STATS:
3195                 return ARRAY_SIZE(atl1_gstrings_stats);
3196         default:
3197                 return -EOPNOTSUPP;
3198         }
3199 }
3200
3201 static int atl1_get_settings(struct net_device *netdev,
3202         struct ethtool_cmd *ecmd)
3203 {
3204         struct atl1_adapter *adapter = netdev_priv(netdev);
3205         struct atl1_hw *hw = &adapter->hw;
3206
3207         ecmd->supported = (SUPPORTED_10baseT_Half |
3208                            SUPPORTED_10baseT_Full |
3209                            SUPPORTED_100baseT_Half |
3210                            SUPPORTED_100baseT_Full |
3211                            SUPPORTED_1000baseT_Full |
3212                            SUPPORTED_Autoneg | SUPPORTED_TP);
3213         ecmd->advertising = ADVERTISED_TP;
3214         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3215             hw->media_type == MEDIA_TYPE_1000M_FULL) {
3216                 ecmd->advertising |= ADVERTISED_Autoneg;
3217                 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR) {
3218                         ecmd->advertising |= ADVERTISED_Autoneg;
3219                         ecmd->advertising |=
3220                             (ADVERTISED_10baseT_Half |
3221                              ADVERTISED_10baseT_Full |
3222                              ADVERTISED_100baseT_Half |
3223                              ADVERTISED_100baseT_Full |
3224                              ADVERTISED_1000baseT_Full);
3225                 } else
3226                         ecmd->advertising |= (ADVERTISED_1000baseT_Full);
3227         }
3228         ecmd->port = PORT_TP;
3229         ecmd->phy_address = 0;
3230         ecmd->transceiver = XCVR_INTERNAL;
3231
3232         if (netif_carrier_ok(adapter->netdev)) {
3233                 u16 link_speed, link_duplex;
3234                 atl1_get_speed_and_duplex(hw, &link_speed, &link_duplex);
3235                 ethtool_cmd_speed_set(ecmd, link_speed);
3236                 if (link_duplex == FULL_DUPLEX)
3237                         ecmd->duplex = DUPLEX_FULL;
3238                 else
3239                         ecmd->duplex = DUPLEX_HALF;
3240         } else {
3241                 ethtool_cmd_speed_set(ecmd, -1);
3242                 ecmd->duplex = -1;
3243         }
3244         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3245             hw->media_type == MEDIA_TYPE_1000M_FULL)
3246                 ecmd->autoneg = AUTONEG_ENABLE;
3247         else
3248                 ecmd->autoneg = AUTONEG_DISABLE;
3249
3250         return 0;
3251 }
3252
3253 static int atl1_set_settings(struct net_device *netdev,
3254         struct ethtool_cmd *ecmd)
3255 {
3256         struct atl1_adapter *adapter = netdev_priv(netdev);
3257         struct atl1_hw *hw = &adapter->hw;
3258         u16 phy_data;
3259         int ret_val = 0;
3260         u16 old_media_type = hw->media_type;
3261
3262         if (netif_running(adapter->netdev)) {
3263                 if (netif_msg_link(adapter))
3264                         dev_dbg(&adapter->pdev->dev,
3265                                 "ethtool shutting down adapter\n");
3266                 atl1_down(adapter);
3267         }
3268
3269         if (ecmd->autoneg == AUTONEG_ENABLE)
3270                 hw->media_type = MEDIA_TYPE_AUTO_SENSOR;
3271         else {
3272                 u32 speed = ethtool_cmd_speed(ecmd);
3273                 if (speed == SPEED_1000) {
3274                         if (ecmd->duplex != DUPLEX_FULL) {
3275                                 if (netif_msg_link(adapter))
3276                                         dev_warn(&adapter->pdev->dev,
3277                                                 "1000M half is invalid\n");
3278                                 ret_val = -EINVAL;
3279                                 goto exit_sset;
3280                         }
3281                         hw->media_type = MEDIA_TYPE_1000M_FULL;
3282                 } else if (speed == SPEED_100) {
3283                         if (ecmd->duplex == DUPLEX_FULL)
3284                                 hw->media_type = MEDIA_TYPE_100M_FULL;
3285                         else
3286                                 hw->media_type = MEDIA_TYPE_100M_HALF;
3287                 } else {
3288                         if (ecmd->duplex == DUPLEX_FULL)
3289                                 hw->media_type = MEDIA_TYPE_10M_FULL;
3290                         else
3291                                 hw->media_type = MEDIA_TYPE_10M_HALF;
3292                 }
3293         }
3294         switch (hw->media_type) {
3295         case MEDIA_TYPE_AUTO_SENSOR:
3296                 ecmd->advertising =
3297                     ADVERTISED_10baseT_Half |
3298                     ADVERTISED_10baseT_Full |
3299                     ADVERTISED_100baseT_Half |
3300                     ADVERTISED_100baseT_Full |
3301                     ADVERTISED_1000baseT_Full |
3302                     ADVERTISED_Autoneg | ADVERTISED_TP;
3303                 break;
3304         case MEDIA_TYPE_1000M_FULL:
3305                 ecmd->advertising =
3306                     ADVERTISED_1000baseT_Full |
3307                     ADVERTISED_Autoneg | ADVERTISED_TP;
3308                 break;
3309         default:
3310                 ecmd->advertising = 0;
3311                 break;
3312         }
3313         if (atl1_phy_setup_autoneg_adv(hw)) {
3314                 ret_val = -EINVAL;
3315                 if (netif_msg_link(adapter))
3316                         dev_warn(&adapter->pdev->dev,
3317                                 "invalid ethtool speed/duplex setting\n");
3318                 goto exit_sset;
3319         }
3320         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3321             hw->media_type == MEDIA_TYPE_1000M_FULL)
3322                 phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN;
3323         else {
3324                 switch (hw->media_type) {
3325                 case MEDIA_TYPE_100M_FULL:
3326                         phy_data =
3327                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
3328                             MII_CR_RESET;
3329                         break;
3330                 case MEDIA_TYPE_100M_HALF:
3331                         phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
3332                         break;
3333                 case MEDIA_TYPE_10M_FULL:
3334                         phy_data =
3335                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
3336                         break;
3337                 default:
3338                         /* MEDIA_TYPE_10M_HALF: */
3339                         phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
3340                         break;
3341                 }
3342         }
3343         atl1_write_phy_reg(hw, MII_BMCR, phy_data);
3344 exit_sset:
3345         if (ret_val)
3346                 hw->media_type = old_media_type;
3347
3348         if (netif_running(adapter->netdev)) {
3349                 if (netif_msg_link(adapter))
3350                         dev_dbg(&adapter->pdev->dev,
3351                                 "ethtool starting adapter\n");
3352                 atl1_up(adapter);
3353         } else if (!ret_val) {
3354                 if (netif_msg_link(adapter))
3355                         dev_dbg(&adapter->pdev->dev,
3356                                 "ethtool resetting adapter\n");
3357                 atl1_reset(adapter);
3358         }
3359         return ret_val;
3360 }
3361
3362 static void atl1_get_drvinfo(struct net_device *netdev,
3363         struct ethtool_drvinfo *drvinfo)
3364 {
3365         struct atl1_adapter *adapter = netdev_priv(netdev);
3366
3367         strlcpy(drvinfo->driver, ATLX_DRIVER_NAME, sizeof(drvinfo->driver));
3368         strlcpy(drvinfo->version, ATLX_DRIVER_VERSION,
3369                 sizeof(drvinfo->version));
3370         strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
3371         strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
3372                 sizeof(drvinfo->bus_info));
3373         drvinfo->eedump_len = ATL1_EEDUMP_LEN;
3374 }
3375
3376 static void atl1_get_wol(struct net_device *netdev,
3377         struct ethtool_wolinfo *wol)
3378 {
3379         struct atl1_adapter *adapter = netdev_priv(netdev);
3380
3381         wol->supported = WAKE_MAGIC;
3382         wol->wolopts = 0;
3383         if (adapter->wol & ATLX_WUFC_MAG)
3384                 wol->wolopts |= WAKE_MAGIC;
3385 }
3386
3387 static int atl1_set_wol(struct net_device *netdev,
3388         struct ethtool_wolinfo *wol)
3389 {
3390         struct atl1_adapter *adapter = netdev_priv(netdev);
3391
3392         if (wol->wolopts & (WAKE_PHY | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST |
3393                 WAKE_ARP | WAKE_MAGICSECURE))
3394                 return -EOPNOTSUPP;
3395         adapter->wol = 0;
3396         if (wol->wolopts & WAKE_MAGIC)
3397                 adapter->wol |= ATLX_WUFC_MAG;
3398
3399         device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
3400
3401         return 0;
3402 }
3403
3404 static u32 atl1_get_msglevel(struct net_device *netdev)
3405 {
3406         struct atl1_adapter *adapter = netdev_priv(netdev);
3407         return adapter->msg_enable;
3408 }
3409
3410 static void atl1_set_msglevel(struct net_device *netdev, u32 value)
3411 {
3412         struct atl1_adapter *adapter = netdev_priv(netdev);
3413         adapter->msg_enable = value;
3414 }
3415
3416 static int atl1_get_regs_len(struct net_device *netdev)
3417 {
3418         return ATL1_REG_COUNT * sizeof(u32);
3419 }
3420
3421 static void atl1_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
3422         void *p)
3423 {
3424         struct atl1_adapter *adapter = netdev_priv(netdev);
3425         struct atl1_hw *hw = &adapter->hw;
3426         unsigned int i;
3427         u32 *regbuf = p;
3428
3429         for (i = 0; i < ATL1_REG_COUNT; i++) {
3430                 /*
3431                  * This switch statement avoids reserved regions
3432                  * of register space.
3433                  */
3434                 switch (i) {
3435                 case 6 ... 9:
3436                 case 14:
3437                 case 29 ... 31:
3438                 case 34 ... 63:
3439                 case 75 ... 127:
3440                 case 136 ... 1023:
3441                 case 1027 ... 1087:
3442                 case 1091 ... 1151:
3443                 case 1194 ... 1195:
3444                 case 1200 ... 1201:
3445                 case 1206 ... 1213:
3446                 case 1216 ... 1279:
3447                 case 1290 ... 1311:
3448                 case 1323 ... 1343:
3449                 case 1358 ... 1359:
3450                 case 1368 ... 1375:
3451                 case 1378 ... 1383:
3452                 case 1388 ... 1391:
3453                 case 1393 ... 1395:
3454                 case 1402 ... 1403:
3455                 case 1410 ... 1471:
3456                 case 1522 ... 1535:
3457                         /* reserved region; don't read it */
3458                         regbuf[i] = 0;
3459                         break;
3460                 default:
3461                         /* unreserved region */
3462                         regbuf[i] = ioread32(hw->hw_addr + (i * sizeof(u32)));
3463                 }
3464         }
3465 }
3466
3467 static void atl1_get_ringparam(struct net_device *netdev,
3468         struct ethtool_ringparam *ring)
3469 {
3470         struct atl1_adapter *adapter = netdev_priv(netdev);
3471         struct atl1_tpd_ring *txdr = &adapter->tpd_ring;
3472         struct atl1_rfd_ring *rxdr = &adapter->rfd_ring;
3473
3474         ring->rx_max_pending = ATL1_MAX_RFD;
3475         ring->tx_max_pending = ATL1_MAX_TPD;
3476         ring->rx_mini_max_pending = 0;
3477         ring->rx_jumbo_max_pending = 0;
3478         ring->rx_pending = rxdr->count;
3479         ring->tx_pending = txdr->count;
3480         ring->rx_mini_pending = 0;
3481         ring->rx_jumbo_pending = 0;
3482 }
3483
3484 static int atl1_set_ringparam(struct net_device *netdev,
3485         struct ethtool_ringparam *ring)
3486 {
3487         struct atl1_adapter *adapter = netdev_priv(netdev);
3488         struct atl1_tpd_ring *tpdr = &adapter->tpd_ring;
3489         struct atl1_rrd_ring *rrdr = &adapter->rrd_ring;
3490         struct atl1_rfd_ring *rfdr = &adapter->rfd_ring;
3491
3492         struct atl1_tpd_ring tpd_old, tpd_new;
3493         struct atl1_rfd_ring rfd_old, rfd_new;
3494         struct atl1_rrd_ring rrd_old, rrd_new;
3495         struct atl1_ring_header rhdr_old, rhdr_new;
3496         struct atl1_smb smb;
3497         struct atl1_cmb cmb;
3498         int err;
3499
3500         tpd_old = adapter->tpd_ring;
3501         rfd_old = adapter->rfd_ring;
3502         rrd_old = adapter->rrd_ring;
3503         rhdr_old = adapter->ring_header;
3504
3505         if (netif_running(adapter->netdev))
3506                 atl1_down(adapter);
3507
3508         rfdr->count = (u16) max(ring->rx_pending, (u32) ATL1_MIN_RFD);
3509         rfdr->count = rfdr->count > ATL1_MAX_RFD ? ATL1_MAX_RFD :
3510                         rfdr->count;
3511         rfdr->count = (rfdr->count + 3) & ~3;
3512         rrdr->count = rfdr->count;
3513
3514         tpdr->count = (u16) max(ring->tx_pending, (u32) ATL1_MIN_TPD);
3515         tpdr->count = tpdr->count > ATL1_MAX_TPD ? ATL1_MAX_TPD :
3516                         tpdr->count;
3517         tpdr->count = (tpdr->count + 3) & ~3;
3518
3519         if (netif_running(adapter->netdev)) {
3520                 /* try to get new resources before deleting old */
3521                 err = atl1_setup_ring_resources(adapter);
3522                 if (err)
3523                         goto err_setup_ring;
3524
3525                 /*
3526                  * save the new, restore the old in order to free it,
3527                  * then restore the new back again
3528                  */
3529
3530                 rfd_new = adapter->rfd_ring;
3531                 rrd_new = adapter->rrd_ring;
3532                 tpd_new = adapter->tpd_ring;
3533                 rhdr_new = adapter->ring_header;
3534                 adapter->rfd_ring = rfd_old;
3535                 adapter->rrd_ring = rrd_old;
3536                 adapter->tpd_ring = tpd_old;
3537                 adapter->ring_header = rhdr_old;
3538                 /*
3539                  * Save SMB and CMB, since atl1_free_ring_resources
3540                  * will clear them.
3541                  */
3542                 smb = adapter->smb;
3543                 cmb = adapter->cmb;
3544                 atl1_free_ring_resources(adapter);
3545                 adapter->rfd_ring = rfd_new;
3546                 adapter->rrd_ring = rrd_new;
3547                 adapter->tpd_ring = tpd_new;
3548                 adapter->ring_header = rhdr_new;
3549                 adapter->smb = smb;
3550                 adapter->cmb = cmb;
3551
3552                 err = atl1_up(adapter);
3553                 if (err)
3554                         return err;
3555         }
3556         return 0;
3557
3558 err_setup_ring:
3559         adapter->rfd_ring = rfd_old;
3560         adapter->rrd_ring = rrd_old;
3561         adapter->tpd_ring = tpd_old;
3562         adapter->ring_header = rhdr_old;
3563         atl1_up(adapter);
3564         return err;
3565 }
3566
3567 static void atl1_get_pauseparam(struct net_device *netdev,
3568         struct ethtool_pauseparam *epause)
3569 {
3570         struct atl1_adapter *adapter = netdev_priv(netdev);
3571         struct atl1_hw *hw = &adapter->hw;
3572
3573         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3574             hw->media_type == MEDIA_TYPE_1000M_FULL) {
3575                 epause->autoneg = AUTONEG_ENABLE;
3576         } else {
3577                 epause->autoneg = AUTONEG_DISABLE;
3578         }
3579         epause->rx_pause = 1;
3580         epause->tx_pause = 1;
3581 }
3582
3583 static int atl1_set_pauseparam(struct net_device *netdev,
3584         struct ethtool_pauseparam *epause)
3585 {
3586         struct atl1_adapter *adapter = netdev_priv(netdev);
3587         struct atl1_hw *hw = &adapter->hw;
3588
3589         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3590             hw->media_type == MEDIA_TYPE_1000M_FULL) {
3591                 epause->autoneg = AUTONEG_ENABLE;
3592         } else {
3593                 epause->autoneg = AUTONEG_DISABLE;
3594         }
3595
3596         epause->rx_pause = 1;
3597         epause->tx_pause = 1;
3598
3599         return 0;
3600 }
3601
3602 static void atl1_get_strings(struct net_device *netdev, u32 stringset,
3603         u8 *data)
3604 {
3605         u8 *p = data;
3606         int i;
3607
3608         switch (stringset) {
3609         case ETH_SS_STATS:
3610                 for (i = 0; i < ARRAY_SIZE(atl1_gstrings_stats); i++) {
3611                         memcpy(p, atl1_gstrings_stats[i].stat_string,
3612                                 ETH_GSTRING_LEN);
3613                         p += ETH_GSTRING_LEN;
3614                 }
3615                 break;
3616         }
3617 }
3618
3619 static int atl1_nway_reset(struct net_device *netdev)
3620 {
3621         struct atl1_adapter *adapter = netdev_priv(netdev);
3622         struct atl1_hw *hw = &adapter->hw;
3623
3624         if (netif_running(netdev)) {
3625                 u16 phy_data;
3626                 atl1_down(adapter);
3627
3628                 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3629                         hw->media_type == MEDIA_TYPE_1000M_FULL) {
3630                         phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN;
3631                 } else {
3632                         switch (hw->media_type) {
3633                         case MEDIA_TYPE_100M_FULL:
3634                                 phy_data = MII_CR_FULL_DUPLEX |
3635                                         MII_CR_SPEED_100 | MII_CR_RESET;
3636                                 break;
3637                         case MEDIA_TYPE_100M_HALF:
3638                                 phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
3639                                 break;
3640                         case MEDIA_TYPE_10M_FULL:
3641                                 phy_data = MII_CR_FULL_DUPLEX |
3642                                         MII_CR_SPEED_10 | MII_CR_RESET;
3643                                 break;
3644                         default:
3645                                 /* MEDIA_TYPE_10M_HALF */
3646                                 phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
3647                         }
3648                 }
3649                 atl1_write_phy_reg(hw, MII_BMCR, phy_data);
3650                 atl1_up(adapter);
3651         }
3652         return 0;
3653 }
3654
3655 static const struct ethtool_ops atl1_ethtool_ops = {
3656         .get_settings           = atl1_get_settings,
3657         .set_settings           = atl1_set_settings,
3658         .get_drvinfo            = atl1_get_drvinfo,
3659         .get_wol                = atl1_get_wol,
3660         .set_wol                = atl1_set_wol,
3661         .get_msglevel           = atl1_get_msglevel,
3662         .set_msglevel           = atl1_set_msglevel,
3663         .get_regs_len           = atl1_get_regs_len,
3664         .get_regs               = atl1_get_regs,
3665         .get_ringparam          = atl1_get_ringparam,
3666         .set_ringparam          = atl1_set_ringparam,
3667         .get_pauseparam         = atl1_get_pauseparam,
3668         .set_pauseparam         = atl1_set_pauseparam,
3669         .get_link               = ethtool_op_get_link,
3670         .get_strings            = atl1_get_strings,
3671         .nway_reset             = atl1_nway_reset,
3672         .get_ethtool_stats      = atl1_get_ethtool_stats,
3673         .get_sset_count         = atl1_get_sset_count,
3674 };