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         s32 ret = 0;
 538         u16 i;
 539
 540         if (atl1_get_permanent_address(hw)) {
 541                 random_ether_addr(hw->perm_mac_addr);
 542                 ret = 1;
 543         }
 544
 545         for (i = 0; i < ETH_ALEN; i++)
 546                 hw->mac_addr[i] = hw->perm_mac_addr[i];
 547         return ret;
 548 }
 549
 550 /*
 551  * Hashes an address to determine its location in the multicast table
 552  * hw - Struct containing variables accessed by shared code
 553  * mc_addr - the multicast address to hash
 554  *
 555  * atl1_hash_mc_addr
 556  *  purpose
 557  *      set hash value for a multicast address
 558  *      hash calcu processing :
 559  *          1. calcu 32bit CRC for multicast address
 560  *          2. reverse crc with MSB to LSB
 561  */
 562 static u32 atl1_hash_mc_addr(struct atl1_hw *hw, u8 *mc_addr)
 563 {
 564         u32 crc32, value = 0;
 565         int i;
 566
 567         crc32 = ether_crc_le(6, mc_addr);
 568         for (i = 0; i < 32; i++)
 569                 value |= (((crc32 >> i) & 1) << (31 - i));
 570
 571         return value;
 572 }
 573
 574 /*
 575  * Sets the bit in the multicast table corresponding to the hash value.
 576  * hw - Struct containing variables accessed by shared code
 577  * hash_value - Multicast address hash value
 578  */
 579 static void atl1_hash_set(struct atl1_hw *hw, u32 hash_value)
 580 {
 581         u32 hash_bit, hash_reg;
 582         u32 mta;
 583
 584         /*
 585          * The HASH Table  is a register array of 2 32-bit registers.
 586          * It is treated like an array of 64 bits.  We want to set
 587          * bit BitArray[hash_value]. So we figure out what register
 588          * the bit is in, read it, OR in the new bit, then write
 589          * back the new value.  The register is determined by the
 590          * upper 7 bits of the hash value and the bit within that
 591          * register are determined by the lower 5 bits of the value.
 592          */
 593         hash_reg = (hash_value >> 31) & 0x1;
 594         hash_bit = (hash_value >> 26) & 0x1F;
 595         mta = ioread32((hw->hw_addr + REG_RX_HASH_TABLE) + (hash_reg << 2));
 596         mta |= (1 << hash_bit);
 597         iowrite32(mta, (hw->hw_addr + REG_RX_HASH_TABLE) + (hash_reg << 2));
 598 }
 599
 600 /*
 601  * Writes a value to a PHY register
 602  * hw - Struct containing variables accessed by shared code
 603  * reg_addr - address of the PHY register to write
 604  * data - data to write to the PHY
 605  */
 606 static s32 atl1_write_phy_reg(struct atl1_hw *hw, u32 reg_addr, u16 phy_data)
 607 {
 608         int i;
 609         u32 val;
 610
 611         val = ((u32) (phy_data & MDIO_DATA_MASK)) << MDIO_DATA_SHIFT |
 612             (reg_addr & MDIO_REG_ADDR_MASK) << MDIO_REG_ADDR_SHIFT |
 613             MDIO_SUP_PREAMBLE |
 614             MDIO_START | MDIO_CLK_25_4 << MDIO_CLK_SEL_SHIFT;
 615         iowrite32(val, hw->hw_addr + REG_MDIO_CTRL);
 616         ioread32(hw->hw_addr + REG_MDIO_CTRL);
 617
 618         for (i = 0; i < MDIO_WAIT_TIMES; i++) {
 619                 udelay(2);
 620                 val = ioread32(hw->hw_addr + REG_MDIO_CTRL);
 621                 if (!(val & (MDIO_START | MDIO_BUSY)))
 622                         break;
 623         }
 624
 625         if (!(val & (MDIO_START | MDIO_BUSY)))
 626                 return 0;
 627
 628         return ATLX_ERR_PHY;
 629 }
 630
 631 /*
 632  * Make L001's PHY out of Power Saving State (bug)
 633  * hw - Struct containing variables accessed by shared code
 634  * when power on, L001's PHY always on Power saving State
 635  * (Gigabit Link forbidden)
 636  */
 637 static s32 atl1_phy_leave_power_saving(struct atl1_hw *hw)
 638 {
 639         s32 ret;
 640         ret = atl1_write_phy_reg(hw, 29, 0x0029);
 641         if (ret)
 642                 return ret;
 643         return atl1_write_phy_reg(hw, 30, 0);
 644 }
 645
 646 /*
 647  * Resets the PHY and make all config validate
 648  * hw - Struct containing variables accessed by shared code
 649  *
 650  * Sets bit 15 and 12 of the MII Control regiser (for F001 bug)
 651  */
 652 static s32 atl1_phy_reset(struct atl1_hw *hw)
 653 {
 654         struct pci_dev *pdev = hw->back->pdev;
 655         struct atl1_adapter *adapter = hw->back;
 656         s32 ret_val;
 657         u16 phy_data;
 658
 659         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
 660             hw->media_type == MEDIA_TYPE_1000M_FULL)
 661                 phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN;
 662         else {
 663                 switch (hw->media_type) {
 664                 case MEDIA_TYPE_100M_FULL:
 665                         phy_data =
 666                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
 667                             MII_CR_RESET;
 668                         break;
 669                 case MEDIA_TYPE_100M_HALF:
 670                         phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
 671                         break;
 672                 case MEDIA_TYPE_10M_FULL:
 673                         phy_data =
 674                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
 675                         break;
 676                 default:
 677                         /* MEDIA_TYPE_10M_HALF: */
 678                         phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
 679                         break;
 680                 }
 681         }
 682
 683         ret_val = atl1_write_phy_reg(hw, MII_BMCR, phy_data);
 684         if (ret_val) {
 685                 u32 val;
 686                 int i;
 687                 /* pcie serdes link may be down! */
 688                 if (netif_msg_hw(adapter))
 689                         dev_dbg(&pdev->dev, "pcie phy link down\n");
 690
 691                 for (i = 0; i < 25; i++) {
 692                         msleep(1);
 693                         val = ioread32(hw->hw_addr + REG_MDIO_CTRL);
 694                         if (!(val & (MDIO_START | MDIO_BUSY)))
 695                                 break;
 696                 }
 697
 698                 if ((val & (MDIO_START | MDIO_BUSY)) != 0) {
 699                         if (netif_msg_hw(adapter))
 700                                 dev_warn(&pdev->dev,
 701                                         "pcie link down at least 25ms\n");
 702                         return ret_val;
 703                 }
 704         }
 705         return 0;
 706 }
 707
 708 /*
 709  * Configures PHY autoneg and flow control advertisement settings
 710  * hw - Struct containing variables accessed by shared code
 711  */
 712 static s32 atl1_phy_setup_autoneg_adv(struct atl1_hw *hw)
 713 {
 714         s32 ret_val;
 715         s16 mii_autoneg_adv_reg;
 716         s16 mii_1000t_ctrl_reg;
 717
 718         /* Read the MII Auto-Neg Advertisement Register (Address 4). */
 719         mii_autoneg_adv_reg = MII_AR_DEFAULT_CAP_MASK;
 720
 721         /* Read the MII 1000Base-T Control Register (Address 9). */
 722         mii_1000t_ctrl_reg = MII_ATLX_CR_1000T_DEFAULT_CAP_MASK;
 723
 724         /*
 725          * First we clear all the 10/100 mb speed bits in the Auto-Neg
 726          * Advertisement Register (Address 4) and the 1000 mb speed bits in
 727          * the  1000Base-T Control Register (Address 9).
 728          */
 729         mii_autoneg_adv_reg &= ~MII_AR_SPEED_MASK;
 730         mii_1000t_ctrl_reg &= ~MII_ATLX_CR_1000T_SPEED_MASK;
 731
 732         /*
 733          * Need to parse media_type  and set up
 734          * the appropriate PHY registers.
 735          */
 736         switch (hw->media_type) {
 737         case MEDIA_TYPE_AUTO_SENSOR:
 738                 mii_autoneg_adv_reg |= (MII_AR_10T_HD_CAPS |
 739                                         MII_AR_10T_FD_CAPS |
 740                                         MII_AR_100TX_HD_CAPS |
 741                                         MII_AR_100TX_FD_CAPS);
 742                 mii_1000t_ctrl_reg |= MII_ATLX_CR_1000T_FD_CAPS;
 743                 break;
 744
 745         case MEDIA_TYPE_1000M_FULL:
 746                 mii_1000t_ctrl_reg |= MII_ATLX_CR_1000T_FD_CAPS;
 747                 break;
 748
 749         case MEDIA_TYPE_100M_FULL:
 750                 mii_autoneg_adv_reg |= MII_AR_100TX_FD_CAPS;
 751                 break;
 752
 753         case MEDIA_TYPE_100M_HALF:
 754                 mii_autoneg_adv_reg |= MII_AR_100TX_HD_CAPS;
 755                 break;
 756
 757         case MEDIA_TYPE_10M_FULL:
 758                 mii_autoneg_adv_reg |= MII_AR_10T_FD_CAPS;
 759                 break;
 760
 761         default:
 762                 mii_autoneg_adv_reg |= MII_AR_10T_HD_CAPS;
 763                 break;
 764         }
 765
 766         /* flow control fixed to enable all */
 767         mii_autoneg_adv_reg |= (MII_AR_ASM_DIR | MII_AR_PAUSE);
 768
 769         hw->mii_autoneg_adv_reg = mii_autoneg_adv_reg;
 770         hw->mii_1000t_ctrl_reg = mii_1000t_ctrl_reg;
 771
 772         ret_val = atl1_write_phy_reg(hw, MII_ADVERTISE, mii_autoneg_adv_reg);
 773         if (ret_val)
 774                 return ret_val;
 775
 776         ret_val = atl1_write_phy_reg(hw, MII_ATLX_CR, mii_1000t_ctrl_reg);
 777         if (ret_val)
 778                 return ret_val;
 779
 780         return 0;
 781 }
 782
 783 /*
 784  * Configures link settings.
 785  * hw - Struct containing variables accessed by shared code
 786  * Assumes the hardware has previously been reset and the
 787  * transmitter and receiver are not enabled.
 788  */
 789 static s32 atl1_setup_link(struct atl1_hw *hw)
 790 {
 791         struct pci_dev *pdev = hw->back->pdev;
 792         struct atl1_adapter *adapter = hw->back;
 793         s32 ret_val;
 794
 795         /*
 796          * Options:
 797          *  PHY will advertise value(s) parsed from
 798          *  autoneg_advertised and fc
 799          *  no matter what autoneg is , We will not wait link result.
 800          */
 801         ret_val = atl1_phy_setup_autoneg_adv(hw);
 802         if (ret_val) {
 803                 if (netif_msg_link(adapter))
 804                         dev_dbg(&pdev->dev,
 805                                 "error setting up autonegotiation\n");
 806                 return ret_val;
 807         }
 808         /* SW.Reset , En-Auto-Neg if needed */
 809         ret_val = atl1_phy_reset(hw);
 810         if (ret_val) {
 811                 if (netif_msg_link(adapter))
 812                         dev_dbg(&pdev->dev, "error resetting phy\n");
 813                 return ret_val;
 814         }
 815         hw->phy_configured = true;
 816         return ret_val;
 817 }
 818
 819 static void atl1_init_flash_opcode(struct atl1_hw *hw)
 820 {
 821         if (hw->flash_vendor >= ARRAY_SIZE(flash_table))
 822                 /* Atmel */
 823                 hw->flash_vendor = 0;
 824
 825         /* Init OP table */
 826         iowrite8(flash_table[hw->flash_vendor].cmd_program,
 827                 hw->hw_addr + REG_SPI_FLASH_OP_PROGRAM);
 828         iowrite8(flash_table[hw->flash_vendor].cmd_sector_erase,
 829                 hw->hw_addr + REG_SPI_FLASH_OP_SC_ERASE);
 830         iowrite8(flash_table[hw->flash_vendor].cmd_chip_erase,
 831                 hw->hw_addr + REG_SPI_FLASH_OP_CHIP_ERASE);
 832         iowrite8(flash_table[hw->flash_vendor].cmd_rdid,
 833                 hw->hw_addr + REG_SPI_FLASH_OP_RDID);
 834         iowrite8(flash_table[hw->flash_vendor].cmd_wren,
 835                 hw->hw_addr + REG_SPI_FLASH_OP_WREN);
 836         iowrite8(flash_table[hw->flash_vendor].cmd_rdsr,
 837                 hw->hw_addr + REG_SPI_FLASH_OP_RDSR);
 838         iowrite8(flash_table[hw->flash_vendor].cmd_wrsr,
 839                 hw->hw_addr + REG_SPI_FLASH_OP_WRSR);
 840         iowrite8(flash_table[hw->flash_vendor].cmd_read,
 841                 hw->hw_addr + REG_SPI_FLASH_OP_READ);
 842 }
 843
 844 /*
 845  * Performs basic configuration of the adapter.
 846  * hw - Struct containing variables accessed by shared code
 847  * Assumes that the controller has previously been reset and is in a
 848  * post-reset uninitialized state. Initializes multicast table,
 849  * and  Calls routines to setup link
 850  * Leaves the transmit and receive units disabled and uninitialized.
 851  */
 852 static s32 atl1_init_hw(struct atl1_hw *hw)
 853 {
 854         u32 ret_val = 0;
 855
 856         /* Zero out the Multicast HASH table */
 857         iowrite32(0, hw->hw_addr + REG_RX_HASH_TABLE);
 858         /* clear the old settings from the multicast hash table */
 859         iowrite32(0, (hw->hw_addr + REG_RX_HASH_TABLE) + (1 << 2));
 860
 861         atl1_init_flash_opcode(hw);
 862
 863         if (!hw->phy_configured) {
 864                 /* enable GPHY LinkChange Interrupt */
 865                 ret_val = atl1_write_phy_reg(hw, 18, 0xC00);
 866                 if (ret_val)
 867                         return ret_val;
 868                 /* make PHY out of power-saving state */
 869                 ret_val = atl1_phy_leave_power_saving(hw);
 870                 if (ret_val)
 871                         return ret_val;
 872                 /* Call a subroutine to configure the link */
 873                 ret_val = atl1_setup_link(hw);
 874         }
 875         return ret_val;
 876 }
 877
 878 /*
 879  * Detects the current speed and duplex settings of the hardware.
 880  * hw - Struct containing variables accessed by shared code
 881  * speed - Speed of the connection
 882  * duplex - Duplex setting of the connection
 883  */
 884 static s32 atl1_get_speed_and_duplex(struct atl1_hw *hw, u16 *speed, u16 *duplex)
 885 {
 886         struct pci_dev *pdev = hw->back->pdev;
 887         struct atl1_adapter *adapter = hw->back;
 888         s32 ret_val;
 889         u16 phy_data;
 890
 891         /* ; --- Read   PHY Specific Status Register (17) */
 892         ret_val = atl1_read_phy_reg(hw, MII_ATLX_PSSR, &phy_data);
 893         if (ret_val)
 894                 return ret_val;
 895
 896         if (!(phy_data & MII_ATLX_PSSR_SPD_DPLX_RESOLVED))
 897                 return ATLX_ERR_PHY_RES;
 898
 899         switch (phy_data & MII_ATLX_PSSR_SPEED) {
 900         case MII_ATLX_PSSR_1000MBS:
 901                 *speed = SPEED_1000;
 902                 break;
 903         case MII_ATLX_PSSR_100MBS:
 904                 *speed = SPEED_100;
 905                 break;
 906         case MII_ATLX_PSSR_10MBS:
 907                 *speed = SPEED_10;
 908                 break;
 909         default:
 910                 if (netif_msg_hw(adapter))
 911                         dev_dbg(&pdev->dev, "error getting speed\n");
 912                 return ATLX_ERR_PHY_SPEED;
 913                 break;
 914         }
 915         if (phy_data & MII_ATLX_PSSR_DPLX)
 916                 *duplex = FULL_DUPLEX;
 917         else
 918                 *duplex = HALF_DUPLEX;
 919
 920         return 0;
 921 }
 922
 923 static void atl1_set_mac_addr(struct atl1_hw *hw)
 924 {
 925         u32 value;
 926         /*
 927          * 00-0B-6A-F6-00-DC
 928          * 0:  6AF600DC   1: 000B
 929          * low dword
 930          */
 931         value = (((u32) hw->mac_addr[2]) << 24) |
 932             (((u32) hw->mac_addr[3]) << 16) |
 933             (((u32) hw->mac_addr[4]) << 8) | (((u32) hw->mac_addr[5]));
 934         iowrite32(value, hw->hw_addr + REG_MAC_STA_ADDR);
 935         /* high dword */
 936         value = (((u32) hw->mac_addr[0]) << 8) | (((u32) hw->mac_addr[1]));
 937         iowrite32(value, (hw->hw_addr + REG_MAC_STA_ADDR) + (1 << 2));
 938 }
 939
 940 /*
 941  * atl1_sw_init - Initialize general software structures (struct atl1_adapter)
 942  * @adapter: board private structure to initialize
 943  *
 944  * atl1_sw_init initializes the Adapter private data structure.
 945  * Fields are initialized based on PCI device information and
 946  * OS network device settings (MTU size).
 947  */
 948 static int __devinit atl1_sw_init(struct atl1_adapter *adapter)
 949 {
 950         struct atl1_hw *hw = &adapter->hw;
 951         struct net_device *netdev = adapter->netdev;
 952
 953         hw->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
 954         hw->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
 955
 956         adapter->wol = 0;
 957         device_set_wakeup_enable(&adapter->pdev->dev, false);
 958         adapter->rx_buffer_len = (hw->max_frame_size + 7) & ~7;
 959         adapter->ict = 50000;           /* 100ms */
 960         adapter->link_speed = SPEED_0;  /* hardware init */
 961         adapter->link_duplex = FULL_DUPLEX;
 962
 963         hw->phy_configured = false;
 964         hw->preamble_len = 7;
 965         hw->ipgt = 0x60;
 966         hw->min_ifg = 0x50;
 967         hw->ipgr1 = 0x40;
 968         hw->ipgr2 = 0x60;
 969         hw->max_retry = 0xf;
 970         hw->lcol = 0x37;
 971         hw->jam_ipg = 7;
 972         hw->rfd_burst = 8;
 973         hw->rrd_burst = 8;
 974         hw->rfd_fetch_gap = 1;
 975         hw->rx_jumbo_th = adapter->rx_buffer_len / 8;
 976         hw->rx_jumbo_lkah = 1;
 977         hw->rrd_ret_timer = 16;
 978         hw->tpd_burst = 4;
 979         hw->tpd_fetch_th = 16;
 980         hw->txf_burst = 0x100;
 981         hw->tx_jumbo_task_th = (hw->max_frame_size + 7) >> 3;
 982         hw->tpd_fetch_gap = 1;
 983         hw->rcb_value = atl1_rcb_64;
 984         hw->dma_ord = atl1_dma_ord_enh;
 985         hw->dmar_block = atl1_dma_req_256;
 986         hw->dmaw_block = atl1_dma_req_256;
 987         hw->cmb_rrd = 4;
 988         hw->cmb_tpd = 4;
 989         hw->cmb_rx_timer = 1;   /* about 2us */
 990         hw->cmb_tx_timer = 1;   /* about 2us */
 991         hw->smb_timer = 100000; /* about 200ms */
 992
 993         spin_lock_init(&adapter->lock);
 994         spin_lock_init(&adapter->mb_lock);
 995
 996         return 0;
 997 }
 998
 999 static int mdio_read(struct net_device *netdev, int phy_id, int reg_num)
1000 {
1001         struct atl1_adapter *adapter = netdev_priv(netdev);
1002         u16 result;
1003
1004         atl1_read_phy_reg(&adapter->hw, reg_num & 0x1f, &result);
1005
1006         return result;
1007 }
1008
1009 static void mdio_write(struct net_device *netdev, int phy_id, int reg_num,
1010         int val)
1011 {
1012         struct atl1_adapter *adapter = netdev_priv(netdev);
1013
1014         atl1_write_phy_reg(&adapter->hw, reg_num, val);
1015 }
1016
1017 /*
1018  * atl1_mii_ioctl -
1019  * @netdev:
1020  * @ifreq:
1021  * @cmd:
1022  */
1023 static int atl1_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1024 {
1025         struct atl1_adapter *adapter = netdev_priv(netdev);
1026         unsigned long flags;
1027         int retval;
1028
1029         if (!netif_running(netdev))
1030                 return -EINVAL;
1031
1032         spin_lock_irqsave(&adapter->lock, flags);
1033         retval = generic_mii_ioctl(&adapter->mii, if_mii(ifr), cmd, NULL);
1034         spin_unlock_irqrestore(&adapter->lock, flags);
1035
1036         return retval;
1037 }
1038
1039 /*
1040  * atl1_setup_mem_resources - allocate Tx / RX descriptor resources
1041  * @adapter: board private structure
1042  *
1043  * Return 0 on success, negative on failure
1044  */
1045 static s32 atl1_setup_ring_resources(struct atl1_adapter *adapter)
1046 {
1047         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1048         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1049         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1050         struct atl1_ring_header *ring_header = &adapter->ring_header;
1051         struct pci_dev *pdev = adapter->pdev;
1052         int size;
1053         u8 offset = 0;
1054
1055         size = sizeof(struct atl1_buffer) * (tpd_ring->count + rfd_ring->count);
1056         tpd_ring->buffer_info = kzalloc(size, GFP_KERNEL);
1057         if (unlikely(!tpd_ring->buffer_info)) {
1058                 if (netif_msg_drv(adapter))
1059                         dev_err(&pdev->dev, "kzalloc failed , size = D%d\n",
1060                                 size);
1061                 goto err_nomem;
1062         }
1063         rfd_ring->buffer_info =
1064                 (struct atl1_buffer *)(tpd_ring->buffer_info + tpd_ring->count);
1065
1066         /*
1067          * real ring DMA buffer
1068          * each ring/block may need up to 8 bytes for alignment, hence the
1069          * additional 40 bytes tacked onto the end.
1070          */
1071         ring_header->size = size =
1072                 sizeof(struct tx_packet_desc) * tpd_ring->count
1073                 + sizeof(struct rx_free_desc) * rfd_ring->count
1074                 + sizeof(struct rx_return_desc) * rrd_ring->count
1075                 + sizeof(struct coals_msg_block)
1076                 + sizeof(struct stats_msg_block)
1077                 + 40;
1078
1079         ring_header->desc = pci_alloc_consistent(pdev, ring_header->size,
1080                 &ring_header->dma);
1081         if (unlikely(!ring_header->desc)) {
1082                 if (netif_msg_drv(adapter))
1083                         dev_err(&pdev->dev, "pci_alloc_consistent failed\n");
1084                 goto err_nomem;
1085         }
1086
1087         memset(ring_header->desc, 0, ring_header->size);
1088
1089         /* init TPD ring */
1090         tpd_ring->dma = ring_header->dma;
1091         offset = (tpd_ring->dma & 0x7) ? (8 - (ring_header->dma & 0x7)) : 0;
1092         tpd_ring->dma += offset;
1093         tpd_ring->desc = (u8 *) ring_header->desc + offset;
1094         tpd_ring->size = sizeof(struct tx_packet_desc) * tpd_ring->count;
1095
1096         /* init RFD ring */
1097         rfd_ring->dma = tpd_ring->dma + tpd_ring->size;
1098         offset = (rfd_ring->dma & 0x7) ? (8 - (rfd_ring->dma & 0x7)) : 0;
1099         rfd_ring->dma += offset;
1100         rfd_ring->desc = (u8 *) tpd_ring->desc + (tpd_ring->size + offset);
1101         rfd_ring->size = sizeof(struct rx_free_desc) * rfd_ring->count;
1102
1103
1104         /* init RRD ring */
1105         rrd_ring->dma = rfd_ring->dma + rfd_ring->size;
1106         offset = (rrd_ring->dma & 0x7) ? (8 - (rrd_ring->dma & 0x7)) : 0;
1107         rrd_ring->dma += offset;
1108         rrd_ring->desc = (u8 *) rfd_ring->desc + (rfd_ring->size + offset);
1109         rrd_ring->size = sizeof(struct rx_return_desc) * rrd_ring->count;
1110
1111
1112         /* init CMB */
1113         adapter->cmb.dma = rrd_ring->dma + rrd_ring->size;
1114         offset = (adapter->cmb.dma & 0x7) ? (8 - (adapter->cmb.dma & 0x7)) : 0;
1115         adapter->cmb.dma += offset;
1116         adapter->cmb.cmb = (struct coals_msg_block *)
1117                 ((u8 *) rrd_ring->desc + (rrd_ring->size + offset));
1118
1119         /* init SMB */
1120         adapter->smb.dma = adapter->cmb.dma + sizeof(struct coals_msg_block);
1121         offset = (adapter->smb.dma & 0x7) ? (8 - (adapter->smb.dma & 0x7)) : 0;
1122         adapter->smb.dma += offset;
1123         adapter->smb.smb = (struct stats_msg_block *)
1124                 ((u8 *) adapter->cmb.cmb +
1125                 (sizeof(struct coals_msg_block) + offset));
1126
1127         return 0;
1128
1129 err_nomem:
1130         kfree(tpd_ring->buffer_info);
1131         return -ENOMEM;
1132 }
1133
1134 static void atl1_init_ring_ptrs(struct atl1_adapter *adapter)
1135 {
1136         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1137         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1138         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1139
1140         atomic_set(&tpd_ring->next_to_use, 0);
1141         atomic_set(&tpd_ring->next_to_clean, 0);
1142
1143         rfd_ring->next_to_clean = 0;
1144         atomic_set(&rfd_ring->next_to_use, 0);
1145
1146         rrd_ring->next_to_use = 0;
1147         atomic_set(&rrd_ring->next_to_clean, 0);
1148 }
1149
1150 /*
1151  * atl1_clean_rx_ring - Free RFD Buffers
1152  * @adapter: board private structure
1153  */
1154 static void atl1_clean_rx_ring(struct atl1_adapter *adapter)
1155 {
1156         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1157         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1158         struct atl1_buffer *buffer_info;
1159         struct pci_dev *pdev = adapter->pdev;
1160         unsigned long size;
1161         unsigned int i;
1162
1163         /* Free all the Rx ring sk_buffs */
1164         for (i = 0; i < rfd_ring->count; i++) {
1165                 buffer_info = &rfd_ring->buffer_info[i];
1166                 if (buffer_info->dma) {
1167                         pci_unmap_page(pdev, buffer_info->dma,
1168                                 buffer_info->length, PCI_DMA_FROMDEVICE);
1169                         buffer_info->dma = 0;
1170                 }
1171                 if (buffer_info->skb) {
1172                         dev_kfree_skb(buffer_info->skb);
1173                         buffer_info->skb = NULL;
1174                 }
1175         }
1176
1177         size = sizeof(struct atl1_buffer) * rfd_ring->count;
1178         memset(rfd_ring->buffer_info, 0, size);
1179
1180         /* Zero out the descriptor ring */
1181         memset(rfd_ring->desc, 0, rfd_ring->size);
1182
1183         rfd_ring->next_to_clean = 0;
1184         atomic_set(&rfd_ring->next_to_use, 0);
1185
1186         rrd_ring->next_to_use = 0;
1187         atomic_set(&rrd_ring->next_to_clean, 0);
1188 }
1189
1190 /*
1191  * atl1_clean_tx_ring - Free Tx Buffers
1192  * @adapter: board private structure
1193  */
1194 static void atl1_clean_tx_ring(struct atl1_adapter *adapter)
1195 {
1196         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1197         struct atl1_buffer *buffer_info;
1198         struct pci_dev *pdev = adapter->pdev;
1199         unsigned long size;
1200         unsigned int i;
1201
1202         /* Free all the Tx ring sk_buffs */
1203         for (i = 0; i < tpd_ring->count; i++) {
1204                 buffer_info = &tpd_ring->buffer_info[i];
1205                 if (buffer_info->dma) {
1206                         pci_unmap_page(pdev, buffer_info->dma,
1207                                 buffer_info->length, PCI_DMA_TODEVICE);
1208                         buffer_info->dma = 0;
1209                 }
1210         }
1211
1212         for (i = 0; i < tpd_ring->count; i++) {
1213                 buffer_info = &tpd_ring->buffer_info[i];
1214                 if (buffer_info->skb) {
1215                         dev_kfree_skb_any(buffer_info->skb);
1216                         buffer_info->skb = NULL;
1217                 }
1218         }
1219
1220         size = sizeof(struct atl1_buffer) * tpd_ring->count;
1221         memset(tpd_ring->buffer_info, 0, size);
1222
1223         /* Zero out the descriptor ring */
1224         memset(tpd_ring->desc, 0, tpd_ring->size);
1225
1226         atomic_set(&tpd_ring->next_to_use, 0);
1227         atomic_set(&tpd_ring->next_to_clean, 0);
1228 }
1229
1230 /*
1231  * atl1_free_ring_resources - Free Tx / RX descriptor Resources
1232  * @adapter: board private structure
1233  *
1234  * Free all transmit software resources
1235  */
1236 static void atl1_free_ring_resources(struct atl1_adapter *adapter)
1237 {
1238         struct pci_dev *pdev = adapter->pdev;
1239         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1240         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1241         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1242         struct atl1_ring_header *ring_header = &adapter->ring_header;
1243
1244         atl1_clean_tx_ring(adapter);
1245         atl1_clean_rx_ring(adapter);
1246
1247         kfree(tpd_ring->buffer_info);
1248         pci_free_consistent(pdev, ring_header->size, ring_header->desc,
1249                 ring_header->dma);
1250
1251         tpd_ring->buffer_info = NULL;
1252         tpd_ring->desc = NULL;
1253         tpd_ring->dma = 0;
1254
1255         rfd_ring->buffer_info = NULL;
1256         rfd_ring->desc = NULL;
1257         rfd_ring->dma = 0;
1258
1259         rrd_ring->desc = NULL;
1260         rrd_ring->dma = 0;
1261
1262         adapter->cmb.dma = 0;
1263         adapter->cmb.cmb = NULL;
1264
1265         adapter->smb.dma = 0;
1266         adapter->smb.smb = NULL;
1267 }
1268
1269 static void atl1_setup_mac_ctrl(struct atl1_adapter *adapter)
1270 {
1271         u32 value;
1272         struct atl1_hw *hw = &adapter->hw;
1273         struct net_device *netdev = adapter->netdev;
1274         /* Config MAC CTRL Register */
1275         value = MAC_CTRL_TX_EN | MAC_CTRL_RX_EN;
1276         /* duplex */
1277         if (FULL_DUPLEX == adapter->link_duplex)
1278                 value |= MAC_CTRL_DUPLX;
1279         /* speed */
1280         value |= ((u32) ((SPEED_1000 == adapter->link_speed) ?
1281                          MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100) <<
1282                   MAC_CTRL_SPEED_SHIFT);
1283         /* flow control */
1284         value |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW);
1285         /* PAD & CRC */
1286         value |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD);
1287         /* preamble length */
1288         value |= (((u32) adapter->hw.preamble_len
1289                    & MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT);
1290         /* vlan */
1291         __atlx_vlan_mode(netdev->features, &value);
1292         /* rx checksum
1293            if (adapter->rx_csum)
1294            value |= MAC_CTRL_RX_CHKSUM_EN;
1295          */
1296         /* filter mode */
1297         value |= MAC_CTRL_BC_EN;
1298         if (netdev->flags & IFF_PROMISC)
1299                 value |= MAC_CTRL_PROMIS_EN;
1300         else if (netdev->flags & IFF_ALLMULTI)
1301                 value |= MAC_CTRL_MC_ALL_EN;
1302         /* value |= MAC_CTRL_LOOPBACK; */
1303         iowrite32(value, hw->hw_addr + REG_MAC_CTRL);
1304 }
1305
1306 static u32 atl1_check_link(struct atl1_adapter *adapter)
1307 {
1308         struct atl1_hw *hw = &adapter->hw;
1309         struct net_device *netdev = adapter->netdev;
1310         u32 ret_val;
1311         u16 speed, duplex, phy_data;
1312         int reconfig = 0;
1313
1314         /* MII_BMSR must read twice */
1315         atl1_read_phy_reg(hw, MII_BMSR, &phy_data);
1316         atl1_read_phy_reg(hw, MII_BMSR, &phy_data);
1317         if (!(phy_data & BMSR_LSTATUS)) {
1318                 /* link down */
1319                 if (netif_carrier_ok(netdev)) {
1320                         /* old link state: Up */
1321                         if (netif_msg_link(adapter))
1322                                 dev_info(&adapter->pdev->dev, "link is down\n");
1323                         adapter->link_speed = SPEED_0;
1324                         netif_carrier_off(netdev);
1325                 }
1326                 return 0;
1327         }
1328
1329         /* Link Up */
1330         ret_val = atl1_get_speed_and_duplex(hw, &speed, &duplex);
1331         if (ret_val)
1332                 return ret_val;
1333
1334         switch (hw->media_type) {
1335         case MEDIA_TYPE_1000M_FULL:
1336                 if (speed != SPEED_1000 || duplex != FULL_DUPLEX)
1337                         reconfig = 1;
1338                 break;
1339         case MEDIA_TYPE_100M_FULL:
1340                 if (speed != SPEED_100 || duplex != FULL_DUPLEX)
1341                         reconfig = 1;
1342                 break;
1343         case MEDIA_TYPE_100M_HALF:
1344                 if (speed != SPEED_100 || duplex != HALF_DUPLEX)
1345                         reconfig = 1;
1346                 break;
1347         case MEDIA_TYPE_10M_FULL:
1348                 if (speed != SPEED_10 || duplex != FULL_DUPLEX)
1349                         reconfig = 1;
1350                 break;
1351         case MEDIA_TYPE_10M_HALF:
1352                 if (speed != SPEED_10 || duplex != HALF_DUPLEX)
1353                         reconfig = 1;
1354                 break;
1355         }
1356
1357         /* link result is our setting */
1358         if (!reconfig) {
1359                 if (adapter->link_speed != speed ||
1360                     adapter->link_duplex != duplex) {
1361                         adapter->link_speed = speed;
1362                         adapter->link_duplex = duplex;
1363                         atl1_setup_mac_ctrl(adapter);
1364                         if (netif_msg_link(adapter))
1365                                 dev_info(&adapter->pdev->dev,
1366                                         "%s link is up %d Mbps %s\n",
1367                                         netdev->name, adapter->link_speed,
1368                                         adapter->link_duplex == FULL_DUPLEX ?
1369                                         "full duplex" : "half duplex");
1370                 }
1371                 if (!netif_carrier_ok(netdev)) {
1372                         /* Link down -> Up */
1373                         netif_carrier_on(netdev);
1374                 }
1375                 return 0;
1376         }
1377
1378         /* change original link status */
1379         if (netif_carrier_ok(netdev)) {
1380                 adapter->link_speed = SPEED_0;
1381                 netif_carrier_off(netdev);
1382                 netif_stop_queue(netdev);
1383         }
1384
1385         if (hw->media_type != MEDIA_TYPE_AUTO_SENSOR &&
1386             hw->media_type != MEDIA_TYPE_1000M_FULL) {
1387                 switch (hw->media_type) {
1388                 case MEDIA_TYPE_100M_FULL:
1389                         phy_data = MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
1390                                    MII_CR_RESET;
1391                         break;
1392                 case MEDIA_TYPE_100M_HALF:
1393                         phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
1394                         break;
1395                 case MEDIA_TYPE_10M_FULL:
1396                         phy_data =
1397                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
1398                         break;
1399                 default:
1400                         /* MEDIA_TYPE_10M_HALF: */
1401                         phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
1402                         break;
1403                 }
1404                 atl1_write_phy_reg(hw, MII_BMCR, phy_data);
1405                 return 0;
1406         }
1407
1408         /* auto-neg, insert timer to re-config phy */
1409         if (!adapter->phy_timer_pending) {
1410                 adapter->phy_timer_pending = true;
1411                 mod_timer(&adapter->phy_config_timer,
1412                           round_jiffies(jiffies + 3 * HZ));
1413         }
1414
1415         return 0;
1416 }
1417
1418 static void set_flow_ctrl_old(struct atl1_adapter *adapter)
1419 {
1420         u32 hi, lo, value;
1421
1422         /* RFD Flow Control */
1423         value = adapter->rfd_ring.count;
1424         hi = value / 16;
1425         if (hi < 2)
1426                 hi = 2;
1427         lo = value * 7 / 8;
1428
1429         value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) |
1430                 ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT);
1431         iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RXF_PAUSE_THRESH);
1432
1433         /* RRD Flow Control */
1434         value = adapter->rrd_ring.count;
1435         lo = value / 16;
1436         hi = value * 7 / 8;
1437         if (lo < 2)
1438                 lo = 2;
1439         value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) |
1440                 ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT);
1441         iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RRD_PAUSE_THRESH);
1442 }
1443
1444 static void set_flow_ctrl_new(struct atl1_hw *hw)
1445 {
1446         u32 hi, lo, value;
1447
1448         /* RXF Flow Control */
1449         value = ioread32(hw->hw_addr + REG_SRAM_RXF_LEN);
1450         lo = value / 16;
1451         if (lo < 192)
1452                 lo = 192;
1453         hi = value * 7 / 8;
1454         if (hi < lo)
1455                 hi = lo + 16;
1456         value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) |
1457                 ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT);
1458         iowrite32(value, hw->hw_addr + REG_RXQ_RXF_PAUSE_THRESH);
1459
1460         /* RRD Flow Control */
1461         value = ioread32(hw->hw_addr + REG_SRAM_RRD_LEN);
1462         lo = value / 8;
1463         hi = value * 7 / 8;
1464         if (lo < 2)
1465                 lo = 2;
1466         if (hi < lo)
1467                 hi = lo + 3;
1468         value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) |
1469                 ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT);
1470         iowrite32(value, hw->hw_addr + REG_RXQ_RRD_PAUSE_THRESH);
1471 }
1472
1473 /*
1474  * atl1_configure - Configure Transmit&Receive Unit after Reset
1475  * @adapter: board private structure
1476  *
1477  * Configure the Tx /Rx unit of the MAC after a reset.
1478  */
1479 static u32 atl1_configure(struct atl1_adapter *adapter)
1480 {
1481         struct atl1_hw *hw = &adapter->hw;
1482         u32 value;
1483
1484         /* clear interrupt status */
1485         iowrite32(0xffffffff, adapter->hw.hw_addr + REG_ISR);
1486
1487         /* set MAC Address */
1488         value = (((u32) hw->mac_addr[2]) << 24) |
1489                 (((u32) hw->mac_addr[3]) << 16) |
1490                 (((u32) hw->mac_addr[4]) << 8) |
1491                 (((u32) hw->mac_addr[5]));
1492         iowrite32(value, hw->hw_addr + REG_MAC_STA_ADDR);
1493         value = (((u32) hw->mac_addr[0]) << 8) | (((u32) hw->mac_addr[1]));
1494         iowrite32(value, hw->hw_addr + (REG_MAC_STA_ADDR + 4));
1495
1496         /* tx / rx ring */
1497
1498         /* HI base address */
1499         iowrite32((u32) ((adapter->tpd_ring.dma & 0xffffffff00000000ULL) >> 32),
1500                 hw->hw_addr + REG_DESC_BASE_ADDR_HI);
1501         /* LO base address */
1502         iowrite32((u32) (adapter->rfd_ring.dma & 0x00000000ffffffffULL),
1503                 hw->hw_addr + REG_DESC_RFD_ADDR_LO);
1504         iowrite32((u32) (adapter->rrd_ring.dma & 0x00000000ffffffffULL),
1505                 hw->hw_addr + REG_DESC_RRD_ADDR_LO);
1506         iowrite32((u32) (adapter->tpd_ring.dma & 0x00000000ffffffffULL),
1507                 hw->hw_addr + REG_DESC_TPD_ADDR_LO);
1508         iowrite32((u32) (adapter->cmb.dma & 0x00000000ffffffffULL),
1509                 hw->hw_addr + REG_DESC_CMB_ADDR_LO);
1510         iowrite32((u32) (adapter->smb.dma & 0x00000000ffffffffULL),
1511                 hw->hw_addr + REG_DESC_SMB_ADDR_LO);
1512
1513         /* element count */
1514         value = adapter->rrd_ring.count;
1515         value <<= 16;
1516         value += adapter->rfd_ring.count;
1517         iowrite32(value, hw->hw_addr + REG_DESC_RFD_RRD_RING_SIZE);
1518         iowrite32(adapter->tpd_ring.count, hw->hw_addr +
1519                 REG_DESC_TPD_RING_SIZE);
1520
1521         /* Load Ptr */
1522         iowrite32(1, hw->hw_addr + REG_LOAD_PTR);
1523
1524         /* config Mailbox */
1525         value = ((atomic_read(&adapter->tpd_ring.next_to_use)
1526                   & MB_TPD_PROD_INDX_MASK) << MB_TPD_PROD_INDX_SHIFT) |
1527                 ((atomic_read(&adapter->rrd_ring.next_to_clean)
1528                 & MB_RRD_CONS_INDX_MASK) << MB_RRD_CONS_INDX_SHIFT) |
1529                 ((atomic_read(&adapter->rfd_ring.next_to_use)
1530                 & MB_RFD_PROD_INDX_MASK) << MB_RFD_PROD_INDX_SHIFT);
1531         iowrite32(value, hw->hw_addr + REG_MAILBOX);
1532
1533         /* config IPG/IFG */
1534         value = (((u32) hw->ipgt & MAC_IPG_IFG_IPGT_MASK)
1535                  << MAC_IPG_IFG_IPGT_SHIFT) |
1536                 (((u32) hw->min_ifg & MAC_IPG_IFG_MIFG_MASK)
1537                 << MAC_IPG_IFG_MIFG_SHIFT) |
1538                 (((u32) hw->ipgr1 & MAC_IPG_IFG_IPGR1_MASK)
1539                 << MAC_IPG_IFG_IPGR1_SHIFT) |
1540                 (((u32) hw->ipgr2 & MAC_IPG_IFG_IPGR2_MASK)
1541                 << MAC_IPG_IFG_IPGR2_SHIFT);
1542         iowrite32(value, hw->hw_addr + REG_MAC_IPG_IFG);
1543
1544         /* config  Half-Duplex Control */
1545         value = ((u32) hw->lcol & MAC_HALF_DUPLX_CTRL_LCOL_MASK) |
1546                 (((u32) hw->max_retry & MAC_HALF_DUPLX_CTRL_RETRY_MASK)
1547                 << MAC_HALF_DUPLX_CTRL_RETRY_SHIFT) |
1548                 MAC_HALF_DUPLX_CTRL_EXC_DEF_EN |
1549                 (0xa << MAC_HALF_DUPLX_CTRL_ABEBT_SHIFT) |
1550                 (((u32) hw->jam_ipg & MAC_HALF_DUPLX_CTRL_JAMIPG_MASK)
1551                 << MAC_HALF_DUPLX_CTRL_JAMIPG_SHIFT);
1552         iowrite32(value, hw->hw_addr + REG_MAC_HALF_DUPLX_CTRL);
1553
1554         /* set Interrupt Moderator Timer */
1555         iowrite16(adapter->imt, hw->hw_addr + REG_IRQ_MODU_TIMER_INIT);
1556         iowrite32(MASTER_CTRL_ITIMER_EN, hw->hw_addr + REG_MASTER_CTRL);
1557
1558         /* set Interrupt Clear Timer */
1559         iowrite16(adapter->ict, hw->hw_addr + REG_CMBDISDMA_TIMER);
1560
1561         /* set max frame size hw will accept */
1562         iowrite32(hw->max_frame_size, hw->hw_addr + REG_MTU);
1563
1564         /* jumbo size & rrd retirement timer */
1565         value = (((u32) hw->rx_jumbo_th & RXQ_JMBOSZ_TH_MASK)
1566                  << RXQ_JMBOSZ_TH_SHIFT) |
1567                 (((u32) hw->rx_jumbo_lkah & RXQ_JMBO_LKAH_MASK)
1568                 << RXQ_JMBO_LKAH_SHIFT) |
1569                 (((u32) hw->rrd_ret_timer & RXQ_RRD_TIMER_MASK)
1570                 << RXQ_RRD_TIMER_SHIFT);
1571         iowrite32(value, hw->hw_addr + REG_RXQ_JMBOSZ_RRDTIM);
1572
1573         /* Flow Control */
1574         switch (hw->dev_rev) {
1575         case 0x8001:
1576         case 0x9001:
1577         case 0x9002:
1578         case 0x9003:
1579                 set_flow_ctrl_old(adapter);
1580                 break;
1581         default:
1582                 set_flow_ctrl_new(hw);
1583                 break;
1584         }
1585
1586         /* config TXQ */
1587         value = (((u32) hw->tpd_burst & TXQ_CTRL_TPD_BURST_NUM_MASK)
1588                  << TXQ_CTRL_TPD_BURST_NUM_SHIFT) |
1589                 (((u32) hw->txf_burst & TXQ_CTRL_TXF_BURST_NUM_MASK)
1590                 << TXQ_CTRL_TXF_BURST_NUM_SHIFT) |
1591                 (((u32) hw->tpd_fetch_th & TXQ_CTRL_TPD_FETCH_TH_MASK)
1592                 << TXQ_CTRL_TPD_FETCH_TH_SHIFT) | TXQ_CTRL_ENH_MODE |
1593                 TXQ_CTRL_EN;
1594         iowrite32(value, hw->hw_addr + REG_TXQ_CTRL);
1595
1596         /* min tpd fetch gap & tx jumbo packet size threshold for taskoffload */
1597         value = (((u32) hw->tx_jumbo_task_th & TX_JUMBO_TASK_TH_MASK)
1598                 << TX_JUMBO_TASK_TH_SHIFT) |
1599                 (((u32) hw->tpd_fetch_gap & TX_TPD_MIN_IPG_MASK)
1600                 << TX_TPD_MIN_IPG_SHIFT);
1601         iowrite32(value, hw->hw_addr + REG_TX_JUMBO_TASK_TH_TPD_IPG);
1602
1603         /* config RXQ */
1604         value = (((u32) hw->rfd_burst & RXQ_CTRL_RFD_BURST_NUM_MASK)
1605                 << RXQ_CTRL_RFD_BURST_NUM_SHIFT) |
1606                 (((u32) hw->rrd_burst & RXQ_CTRL_RRD_BURST_THRESH_MASK)
1607                 << RXQ_CTRL_RRD_BURST_THRESH_SHIFT) |
1608                 (((u32) hw->rfd_fetch_gap & RXQ_CTRL_RFD_PREF_MIN_IPG_MASK)
1609                 << RXQ_CTRL_RFD_PREF_MIN_IPG_SHIFT) | RXQ_CTRL_CUT_THRU_EN |
1610                 RXQ_CTRL_EN;
1611         iowrite32(value, hw->hw_addr + REG_RXQ_CTRL);
1612
1613         /* config DMA Engine */
1614         value = ((((u32) hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK)
1615                 << DMA_CTRL_DMAR_BURST_LEN_SHIFT) |
1616                 ((((u32) hw->dmaw_block) & DMA_CTRL_DMAW_BURST_LEN_MASK)
1617                 << DMA_CTRL_DMAW_BURST_LEN_SHIFT) | DMA_CTRL_DMAR_EN |
1618                 DMA_CTRL_DMAW_EN;
1619         value |= (u32) hw->dma_ord;
1620         if (atl1_rcb_128 == hw->rcb_value)
1621                 value |= DMA_CTRL_RCB_VALUE;
1622         iowrite32(value, hw->hw_addr + REG_DMA_CTRL);
1623
1624         /* config CMB / SMB */
1625         value = (hw->cmb_tpd > adapter->tpd_ring.count) ?
1626                 hw->cmb_tpd : adapter->tpd_ring.count;
1627         value <<= 16;
1628         value |= hw->cmb_rrd;
1629         iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TH);
1630         value = hw->cmb_rx_timer | ((u32) hw->cmb_tx_timer << 16);
1631         iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TIMER);
1632         iowrite32(hw->smb_timer, hw->hw_addr + REG_SMB_TIMER);
1633
1634         /* --- enable CMB / SMB */
1635         value = CSMB_CTRL_CMB_EN | CSMB_CTRL_SMB_EN;
1636         iowrite32(value, hw->hw_addr + REG_CSMB_CTRL);
1637
1638         value = ioread32(adapter->hw.hw_addr + REG_ISR);
1639         if (unlikely((value & ISR_PHY_LINKDOWN) != 0))
1640                 value = 1;      /* config failed */
1641         else
1642                 value = 0;
1643
1644         /* clear all interrupt status */
1645         iowrite32(0x3fffffff, adapter->hw.hw_addr + REG_ISR);
1646         iowrite32(0, adapter->hw.hw_addr + REG_ISR);
1647         return value;
1648 }
1649
1650 /*
1651  * atl1_pcie_patch - Patch for PCIE module
1652  */
1653 static void atl1_pcie_patch(struct atl1_adapter *adapter)
1654 {
1655         u32 value;
1656
1657         /* much vendor magic here */
1658         value = 0x6500;
1659         iowrite32(value, adapter->hw.hw_addr + 0x12FC);
1660         /* pcie flow control mode change */
1661         value = ioread32(adapter->hw.hw_addr + 0x1008);
1662         value |= 0x8000;
1663         iowrite32(value, adapter->hw.hw_addr + 0x1008);
1664 }
1665
1666 /*
1667  * When ACPI resume on some VIA MotherBoard, the Interrupt Disable bit/0x400
1668  * on PCI Command register is disable.
1669  * The function enable this bit.
1670  * Brackett, 2006/03/15
1671  */
1672 static void atl1_via_workaround(struct atl1_adapter *adapter)
1673 {
1674         unsigned long value;
1675
1676         value = ioread16(adapter->hw.hw_addr + PCI_COMMAND);
1677         if (value & PCI_COMMAND_INTX_DISABLE)
1678                 value &= ~PCI_COMMAND_INTX_DISABLE;
1679         iowrite32(value, adapter->hw.hw_addr + PCI_COMMAND);
1680 }
1681
1682 static void atl1_inc_smb(struct atl1_adapter *adapter)
1683 {
1684         struct net_device *netdev = adapter->netdev;
1685         struct stats_msg_block *smb = adapter->smb.smb;
1686
1687         /* Fill out the OS statistics structure */
1688         adapter->soft_stats.rx_packets += smb->rx_ok;
1689         adapter->soft_stats.tx_packets += smb->tx_ok;
1690         adapter->soft_stats.rx_bytes += smb->rx_byte_cnt;
1691         adapter->soft_stats.tx_bytes += smb->tx_byte_cnt;
1692         adapter->soft_stats.multicast += smb->rx_mcast;
1693         adapter->soft_stats.collisions += (smb->tx_1_col + smb->tx_2_col * 2 +
1694                 smb->tx_late_col + smb->tx_abort_col * adapter->hw.max_retry);
1695
1696         /* Rx Errors */
1697         adapter->soft_stats.rx_errors += (smb->rx_frag + smb->rx_fcs_err +
1698                 smb->rx_len_err + smb->rx_sz_ov + smb->rx_rxf_ov +
1699                 smb->rx_rrd_ov + smb->rx_align_err);
1700         adapter->soft_stats.rx_fifo_errors += smb->rx_rxf_ov;
1701         adapter->soft_stats.rx_length_errors += smb->rx_len_err;
1702         adapter->soft_stats.rx_crc_errors += smb->rx_fcs_err;
1703         adapter->soft_stats.rx_frame_errors += smb->rx_align_err;
1704         adapter->soft_stats.rx_missed_errors += (smb->rx_rrd_ov +
1705                 smb->rx_rxf_ov);
1706
1707         adapter->soft_stats.rx_pause += smb->rx_pause;
1708         adapter->soft_stats.rx_rrd_ov += smb->rx_rrd_ov;
1709         adapter->soft_stats.rx_trunc += smb->rx_sz_ov;
1710
1711         /* Tx Errors */
1712         adapter->soft_stats.tx_errors += (smb->tx_late_col +
1713                 smb->tx_abort_col + smb->tx_underrun + smb->tx_trunc);
1714         adapter->soft_stats.tx_fifo_errors += smb->tx_underrun;
1715         adapter->soft_stats.tx_aborted_errors += smb->tx_abort_col;
1716         adapter->soft_stats.tx_window_errors += smb->tx_late_col;
1717
1718         adapter->soft_stats.excecol += smb->tx_abort_col;
1719         adapter->soft_stats.deffer += smb->tx_defer;
1720         adapter->soft_stats.scc += smb->tx_1_col;
1721         adapter->soft_stats.mcc += smb->tx_2_col;
1722         adapter->soft_stats.latecol += smb->tx_late_col;
1723         adapter->soft_stats.tx_underun += smb->tx_underrun;
1724         adapter->soft_stats.tx_trunc += smb->tx_trunc;
1725         adapter->soft_stats.tx_pause += smb->tx_pause;
1726
1727         netdev->stats.rx_packets = adapter->soft_stats.rx_packets;
1728         netdev->stats.tx_packets = adapter->soft_stats.tx_packets;
1729         netdev->stats.rx_bytes = adapter->soft_stats.rx_bytes;
1730         netdev->stats.tx_bytes = adapter->soft_stats.tx_bytes;
1731         netdev->stats.multicast = adapter->soft_stats.multicast;
1732         netdev->stats.collisions = adapter->soft_stats.collisions;
1733         netdev->stats.rx_errors = adapter->soft_stats.rx_errors;
1734         netdev->stats.rx_over_errors =
1735                 adapter->soft_stats.rx_missed_errors;
1736         netdev->stats.rx_length_errors =
1737                 adapter->soft_stats.rx_length_errors;
1738         netdev->stats.rx_crc_errors = adapter->soft_stats.rx_crc_errors;
1739         netdev->stats.rx_frame_errors =
1740                 adapter->soft_stats.rx_frame_errors;
1741         netdev->stats.rx_fifo_errors = adapter->soft_stats.rx_fifo_errors;
1742         netdev->stats.rx_missed_errors =
1743                 adapter->soft_stats.rx_missed_errors;
1744         netdev->stats.tx_errors = adapter->soft_stats.tx_errors;
1745         netdev->stats.tx_fifo_errors = adapter->soft_stats.tx_fifo_errors;
1746         netdev->stats.tx_aborted_errors =
1747                 adapter->soft_stats.tx_aborted_errors;
1748         netdev->stats.tx_window_errors =
1749                 adapter->soft_stats.tx_window_errors;
1750         netdev->stats.tx_carrier_errors =
1751                 adapter->soft_stats.tx_carrier_errors;
1752 }
1753
1754 static void atl1_update_mailbox(struct atl1_adapter *adapter)
1755 {
1756         unsigned long flags;
1757         u32 tpd_next_to_use;
1758         u32 rfd_next_to_use;
1759         u32 rrd_next_to_clean;
1760         u32 value;
1761
1762         spin_lock_irqsave(&adapter->mb_lock, flags);
1763
1764         tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use);
1765         rfd_next_to_use = atomic_read(&adapter->rfd_ring.next_to_use);
1766         rrd_next_to_clean = atomic_read(&adapter->rrd_ring.next_to_clean);
1767
1768         value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) <<
1769                 MB_RFD_PROD_INDX_SHIFT) |
1770                 ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) <<
1771                 MB_RRD_CONS_INDX_SHIFT) |
1772                 ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) <<
1773                 MB_TPD_PROD_INDX_SHIFT);
1774         iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX);
1775
1776         spin_unlock_irqrestore(&adapter->mb_lock, flags);
1777 }
1778
1779 static void atl1_clean_alloc_flag(struct atl1_adapter *adapter,
1780         struct rx_return_desc *rrd, u16 offset)
1781 {
1782         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1783
1784         while (rfd_ring->next_to_clean != (rrd->buf_indx + offset)) {
1785                 rfd_ring->buffer_info[rfd_ring->next_to_clean].alloced = 0;
1786                 if (++rfd_ring->next_to_clean == rfd_ring->count) {
1787                         rfd_ring->next_to_clean = 0;
1788                 }
1789         }
1790 }
1791
1792 static void atl1_update_rfd_index(struct atl1_adapter *adapter,
1793         struct rx_return_desc *rrd)
1794 {
1795         u16 num_buf;
1796
1797         num_buf = (rrd->xsz.xsum_sz.pkt_size + adapter->rx_buffer_len - 1) /
1798                 adapter->rx_buffer_len;
1799         if (rrd->num_buf == num_buf)
1800                 /* clean alloc flag for bad rrd */
1801                 atl1_clean_alloc_flag(adapter, rrd, num_buf);
1802 }
1803
1804 static void atl1_rx_checksum(struct atl1_adapter *adapter,
1805         struct rx_return_desc *rrd, struct sk_buff *skb)
1806 {
1807         struct pci_dev *pdev = adapter->pdev;
1808
1809         /*
1810          * The L1 hardware contains a bug that erroneously sets the
1811          * PACKET_FLAG_ERR and ERR_FLAG_L4_CHKSUM bits whenever a
1812          * fragmented IP packet is received, even though the packet
1813          * is perfectly valid and its checksum is correct. There's
1814          * no way to distinguish between one of these good packets
1815          * and a packet that actually contains a TCP/UDP checksum
1816          * error, so all we can do is allow it to be handed up to
1817          * the higher layers and let it be sorted out there.
1818          */
1819
1820         skb_checksum_none_assert(skb);
1821
1822         if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) {
1823                 if (rrd->err_flg & (ERR_FLAG_CRC | ERR_FLAG_TRUNC |
1824                                         ERR_FLAG_CODE | ERR_FLAG_OV)) {
1825                         adapter->hw_csum_err++;
1826                         if (netif_msg_rx_err(adapter))
1827                                 dev_printk(KERN_DEBUG, &pdev->dev,
1828                                         "rx checksum error\n");
1829                         return;
1830                 }
1831         }
1832
1833         /* not IPv4 */
1834         if (!(rrd->pkt_flg & PACKET_FLAG_IPV4))
1835                 /* checksum is invalid, but it's not an IPv4 pkt, so ok */
1836                 return;
1837
1838         /* IPv4 packet */
1839         if (likely(!(rrd->err_flg &
1840                 (ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM)))) {
1841                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1842                 adapter->hw_csum_good++;
1843                 return;
1844         }
1845 }
1846
1847 /*
1848  * atl1_alloc_rx_buffers - Replace used receive buffers
1849  * @adapter: address of board private structure
1850  */
1851 static u16 atl1_alloc_rx_buffers(struct atl1_adapter *adapter)
1852 {
1853         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1854         struct pci_dev *pdev = adapter->pdev;
1855         struct page *page;
1856         unsigned long offset;
1857         struct atl1_buffer *buffer_info, *next_info;
1858         struct sk_buff *skb;
1859         u16 num_alloc = 0;
1860         u16 rfd_next_to_use, next_next;
1861         struct rx_free_desc *rfd_desc;
1862
1863         next_next = rfd_next_to_use = atomic_read(&rfd_ring->next_to_use);
1864         if (++next_next == rfd_ring->count)
1865                 next_next = 0;
1866         buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
1867         next_info = &rfd_ring->buffer_info[next_next];
1868
1869         while (!buffer_info->alloced && !next_info->alloced) {
1870                 if (buffer_info->skb) {
1871                         buffer_info->alloced = 1;
1872                         goto next;
1873                 }
1874
1875                 rfd_desc = ATL1_RFD_DESC(rfd_ring, rfd_next_to_use);
1876
1877                 skb = netdev_alloc_skb_ip_align(adapter->netdev,
1878                                                 adapter->rx_buffer_len);
1879                 if (unlikely(!skb)) {
1880                         /* Better luck next round */
1881                         adapter->netdev->stats.rx_dropped++;
1882                         break;
1883                 }
1884
1885                 buffer_info->alloced = 1;
1886                 buffer_info->skb = skb;
1887                 buffer_info->length = (u16) adapter->rx_buffer_len;
1888                 page = virt_to_page(skb->data);
1889                 offset = (unsigned long)skb->data & ~PAGE_MASK;
1890                 buffer_info->dma = pci_map_page(pdev, page, offset,
1891                                                 adapter->rx_buffer_len,
1892                                                 PCI_DMA_FROMDEVICE);
1893                 rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
1894                 rfd_desc->buf_len = cpu_to_le16(adapter->rx_buffer_len);
1895                 rfd_desc->coalese = 0;
1896
1897 next:
1898                 rfd_next_to_use = next_next;
1899                 if (unlikely(++next_next == rfd_ring->count))
1900                         next_next = 0;
1901
1902                 buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
1903                 next_info = &rfd_ring->buffer_info[next_next];
1904                 num_alloc++;
1905         }
1906
1907         if (num_alloc) {
1908                 /*
1909                  * Force memory writes to complete before letting h/w
1910                  * know there are new descriptors to fetch.  (Only
1911                  * applicable for weak-ordered memory model archs,
1912                  * such as IA-64).
1913                  */
1914                 wmb();
1915                 atomic_set(&rfd_ring->next_to_use, (int)rfd_next_to_use);
1916         }
1917         return num_alloc;
1918 }
1919
1920 static void atl1_intr_rx(struct atl1_adapter *adapter)
1921 {
1922         int i, count;
1923         u16 length;
1924         u16 rrd_next_to_clean;
1925         u32 value;
1926         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1927         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1928         struct atl1_buffer *buffer_info;
1929         struct rx_return_desc *rrd;
1930         struct sk_buff *skb;
1931
1932         count = 0;
1933
1934         rrd_next_to_clean = atomic_read(&rrd_ring->next_to_clean);
1935
1936         while (1) {
1937                 rrd = ATL1_RRD_DESC(rrd_ring, rrd_next_to_clean);
1938                 i = 1;
1939                 if (likely(rrd->xsz.valid)) {   /* packet valid */
1940 chk_rrd:
1941                         /* check rrd status */
1942                         if (likely(rrd->num_buf == 1))
1943                                 goto rrd_ok;
1944                         else if (netif_msg_rx_err(adapter)) {
1945                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1946                                         "unexpected RRD buffer count\n");
1947                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1948                                         "rx_buf_len = %d\n",
1949                                         adapter->rx_buffer_len);
1950                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1951                                         "RRD num_buf = %d\n",
1952                                         rrd->num_buf);
1953                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1954                                         "RRD pkt_len = %d\n",
1955                                         rrd->xsz.xsum_sz.pkt_size);
1956                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1957                                         "RRD pkt_flg = 0x%08X\n",
1958                                         rrd->pkt_flg);
1959                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1960                                         "RRD err_flg = 0x%08X\n",
1961                                         rrd->err_flg);
1962                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1963                                         "RRD vlan_tag = 0x%08X\n",
1964                                         rrd->vlan_tag);
1965                         }
1966
1967                         /* rrd seems to be bad */
1968                         if (unlikely(i-- > 0)) {
1969                                 /* rrd may not be DMAed completely */
1970                                 udelay(1);
1971                                 goto chk_rrd;
1972                         }
1973                         /* bad rrd */
1974                         if (netif_msg_rx_err(adapter))
1975                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1976                                         "bad RRD\n");
1977                         /* see if update RFD index */
1978                         if (rrd->num_buf > 1)
1979                                 atl1_update_rfd_index(adapter, rrd);
1980
1981                         /* update rrd */
1982                         rrd->xsz.valid = 0;
1983                         if (++rrd_next_to_clean == rrd_ring->count)
1984                                 rrd_next_to_clean = 0;
1985                         count++;
1986                         continue;
1987                 } else {        /* current rrd still not be updated */
1988
1989                         break;
1990                 }
1991 rrd_ok:
1992                 /* clean alloc flag for bad rrd */
1993                 atl1_clean_alloc_flag(adapter, rrd, 0);
1994
1995                 buffer_info = &rfd_ring->buffer_info[rrd->buf_indx];
1996                 if (++rfd_ring->next_to_clean == rfd_ring->count)
1997                         rfd_ring->next_to_clean = 0;
1998
1999                 /* update rrd next to clean */
2000                 if (++rrd_next_to_clean == rrd_ring->count)
2001                         rrd_next_to_clean = 0;
2002                 count++;
2003
2004                 if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) {
2005                         if (!(rrd->err_flg &
2006                                 (ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM
2007                                 | ERR_FLAG_LEN))) {
2008                                 /* packet error, don't need upstream */
2009                                 buffer_info->alloced = 0;
2010                                 rrd->xsz.valid = 0;
2011                                 continue;
2012                         }
2013                 }
2014
2015                 /* Good Receive */
2016                 pci_unmap_page(adapter->pdev, buffer_info->dma,
2017                                buffer_info->length, PCI_DMA_FROMDEVICE);
2018                 buffer_info->dma = 0;
2019                 skb = buffer_info->skb;
2020                 length = le16_to_cpu(rrd->xsz.xsum_sz.pkt_size);
2021
2022                 skb_put(skb, length - ETH_FCS_LEN);
2023
2024                 /* Receive Checksum Offload */
2025                 atl1_rx_checksum(adapter, rrd, skb);
2026                 skb->protocol = eth_type_trans(skb, adapter->netdev);
2027
2028                 if (rrd->pkt_flg & PACKET_FLAG_VLAN_INS) {
2029                         u16 vlan_tag = (rrd->vlan_tag >> 4) |
2030                                         ((rrd->vlan_tag & 7) << 13) |
2031                                         ((rrd->vlan_tag & 8) << 9);
2032
2033                         __vlan_hwaccel_put_tag(skb, vlan_tag);
2034                 }
2035                 netif_rx(skb);
2036
2037                 /* let protocol layer free skb */
2038                 buffer_info->skb = NULL;
2039                 buffer_info->alloced = 0;
2040                 rrd->xsz.valid = 0;
2041         }
2042
2043         atomic_set(&rrd_ring->next_to_clean, rrd_next_to_clean);
2044
2045         atl1_alloc_rx_buffers(adapter);
2046
2047         /* update mailbox ? */
2048         if (count) {
2049                 u32 tpd_next_to_use;
2050                 u32 rfd_next_to_use;
2051
2052                 spin_lock(&adapter->mb_lock);
2053
2054                 tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use);
2055                 rfd_next_to_use =
2056                     atomic_read(&adapter->rfd_ring.next_to_use);
2057                 rrd_next_to_clean =
2058                     atomic_read(&adapter->rrd_ring.next_to_clean);
2059                 value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) <<
2060                         MB_RFD_PROD_INDX_SHIFT) |
2061                         ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) <<
2062                         MB_RRD_CONS_INDX_SHIFT) |
2063                         ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) <<
2064                         MB_TPD_PROD_INDX_SHIFT);
2065                 iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX);
2066                 spin_unlock(&adapter->mb_lock);
2067         }
2068 }
2069
2070 static void atl1_intr_tx(struct atl1_adapter *adapter)
2071 {
2072         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2073         struct atl1_buffer *buffer_info;
2074         u16 sw_tpd_next_to_clean;
2075         u16 cmb_tpd_next_to_clean;
2076
2077         sw_tpd_next_to_clean = atomic_read(&tpd_ring->next_to_clean);
2078         cmb_tpd_next_to_clean = le16_to_cpu(adapter->cmb.cmb->tpd_cons_idx);
2079
2080         while (cmb_tpd_next_to_clean != sw_tpd_next_to_clean) {
2081                 buffer_info = &tpd_ring->buffer_info[sw_tpd_next_to_clean];
2082                 if (buffer_info->dma) {
2083                         pci_unmap_page(adapter->pdev, buffer_info->dma,
2084                                        buffer_info->length, PCI_DMA_TODEVICE);
2085                         buffer_info->dma = 0;
2086                 }
2087
2088                 if (buffer_info->skb) {
2089                         dev_kfree_skb_irq(buffer_info->skb);
2090                         buffer_info->skb = NULL;
2091                 }
2092
2093                 if (++sw_tpd_next_to_clean == tpd_ring->count)
2094                         sw_tpd_next_to_clean = 0;
2095         }
2096         atomic_set(&tpd_ring->next_to_clean, sw_tpd_next_to_clean);
2097
2098         if (netif_queue_stopped(adapter->netdev) &&
2099             netif_carrier_ok(adapter->netdev))
2100                 netif_wake_queue(adapter->netdev);
2101 }
2102
2103 static u16 atl1_tpd_avail(struct atl1_tpd_ring *tpd_ring)
2104 {
2105         u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean);
2106         u16 next_to_use = atomic_read(&tpd_ring->next_to_use);
2107         return (next_to_clean > next_to_use) ?
2108                 next_to_clean - next_to_use - 1 :
2109                 tpd_ring->count + next_to_clean - next_to_use - 1;
2110 }
2111
2112 static int atl1_tso(struct atl1_adapter *adapter, struct sk_buff *skb,
2113         struct tx_packet_desc *ptpd)
2114 {
2115         u8 hdr_len, ip_off;
2116         u32 real_len;
2117         int err;
2118
2119         if (skb_shinfo(skb)->gso_size) {
2120                 if (skb_header_cloned(skb)) {
2121                         err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
2122                         if (unlikely(err))
2123                                 return -1;
2124                 }
2125
2126                 if (skb->protocol == htons(ETH_P_IP)) {
2127                         struct iphdr *iph = ip_hdr(skb);
2128
2129                         real_len = (((unsigned char *)iph - skb->data) +
2130                                 ntohs(iph->tot_len));
2131                         if (real_len < skb->len)
2132                                 pskb_trim(skb, real_len);
2133                         hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb));
2134                         if (skb->len == hdr_len) {
2135                                 iph->check = 0;
2136                                 tcp_hdr(skb)->check =
2137                                         ~csum_tcpudp_magic(iph->saddr,
2138                                         iph->daddr, tcp_hdrlen(skb),
2139                                         IPPROTO_TCP, 0);
2140                                 ptpd->word3 |= (iph->ihl & TPD_IPHL_MASK) <<
2141                                         TPD_IPHL_SHIFT;
2142                                 ptpd->word3 |= ((tcp_hdrlen(skb) >> 2) &
2143                                         TPD_TCPHDRLEN_MASK) <<
2144                                         TPD_TCPHDRLEN_SHIFT;
2145                                 ptpd->word3 |= 1 << TPD_IP_CSUM_SHIFT;
2146                                 ptpd->word3 |= 1 << TPD_TCP_CSUM_SHIFT;
2147                                 return 1;
2148                         }
2149
2150                         iph->check = 0;
2151                         tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2152                                         iph->daddr, 0, IPPROTO_TCP, 0);
2153                         ip_off = (unsigned char *)iph -
2154                                 (unsigned char *) skb_network_header(skb);
2155                         if (ip_off == 8) /* 802.3-SNAP frame */
2156                                 ptpd->word3 |= 1 << TPD_ETHTYPE_SHIFT;
2157                         else if (ip_off != 0)
2158                                 return -2;
2159
2160                         ptpd->word3 |= (iph->ihl & TPD_IPHL_MASK) <<
2161                                 TPD_IPHL_SHIFT;
2162                         ptpd->word3 |= ((tcp_hdrlen(skb) >> 2) &
2163                                 TPD_TCPHDRLEN_MASK) << TPD_TCPHDRLEN_SHIFT;
2164                         ptpd->word3 |= (skb_shinfo(skb)->gso_size &
2165                                 TPD_MSS_MASK) << TPD_MSS_SHIFT;
2166                         ptpd->word3 |= 1 << TPD_SEGMENT_EN_SHIFT;
2167                         return 3;
2168                 }
2169         }
2170         return false;
2171 }
2172
2173 static int atl1_tx_csum(struct atl1_adapter *adapter, struct sk_buff *skb,
2174         struct tx_packet_desc *ptpd)
2175 {
2176         u8 css, cso;
2177
2178         if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
2179                 css = skb_checksum_start_offset(skb);
2180                 cso = css + (u8) skb->csum_offset;
2181                 if (unlikely(css & 0x1)) {
2182                         /* L1 hardware requires an even number here */
2183                         if (netif_msg_tx_err(adapter))
2184                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2185                                         "payload offset not an even number\n");
2186                         return -1;
2187                 }
2188                 ptpd->word3 |= (css & TPD_PLOADOFFSET_MASK) <<
2189                         TPD_PLOADOFFSET_SHIFT;
2190                 ptpd->word3 |= (cso & TPD_CCSUMOFFSET_MASK) <<
2191                         TPD_CCSUMOFFSET_SHIFT;
2192                 ptpd->word3 |= 1 << TPD_CUST_CSUM_EN_SHIFT;
2193                 return true;
2194         }
2195         return 0;
2196 }
2197
2198 static void atl1_tx_map(struct atl1_adapter *adapter, struct sk_buff *skb,
2199         struct tx_packet_desc *ptpd)
2200 {
2201         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2202         struct atl1_buffer *buffer_info;
2203         u16 buf_len = skb->len;
2204         struct page *page;
2205         unsigned long offset;
2206         unsigned int nr_frags;
2207         unsigned int f;
2208         int retval;
2209         u16 next_to_use;
2210         u16 data_len;
2211         u8 hdr_len;
2212
2213         buf_len -= skb->data_len;
2214         nr_frags = skb_shinfo(skb)->nr_frags;
2215         next_to_use = atomic_read(&tpd_ring->next_to_use);
2216         buffer_info = &tpd_ring->buffer_info[next_to_use];
2217         BUG_ON(buffer_info->skb);
2218         /* put skb in last TPD */
2219         buffer_info->skb = NULL;
2220
2221         retval = (ptpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK;
2222         if (retval) {
2223                 /* TSO */
2224                 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
2225                 buffer_info->length = hdr_len;
2226                 page = virt_to_page(skb->data);
2227                 offset = (unsigned long)skb->data & ~PAGE_MASK;
2228                 buffer_info->dma = pci_map_page(adapter->pdev, page,
2229                                                 offset, hdr_len,
2230                                                 PCI_DMA_TODEVICE);
2231
2232                 if (++next_to_use == tpd_ring->count)
2233                         next_to_use = 0;
2234
2235                 if (buf_len > hdr_len) {
2236                         int i, nseg;
2237
2238                         data_len = buf_len - hdr_len;
2239                         nseg = (data_len + ATL1_MAX_TX_BUF_LEN - 1) /
2240                                 ATL1_MAX_TX_BUF_LEN;
2241                         for (i = 0; i < nseg; i++) {
2242                                 buffer_info =
2243                                     &tpd_ring->buffer_info[next_to_use];
2244                                 buffer_info->skb = NULL;
2245                                 buffer_info->length =
2246                                     (ATL1_MAX_TX_BUF_LEN >=
2247                                      data_len) ? ATL1_MAX_TX_BUF_LEN : data_len;
2248                                 data_len -= buffer_info->length;
2249                                 page = virt_to_page(skb->data +
2250                                         (hdr_len + i * ATL1_MAX_TX_BUF_LEN));
2251                                 offset = (unsigned long)(skb->data +
2252                                         (hdr_len + i * ATL1_MAX_TX_BUF_LEN)) &
2253                                         ~PAGE_MASK;
2254                                 buffer_info->dma = pci_map_page(adapter->pdev,
2255                                         page, offset, buffer_info->length,
2256                                         PCI_DMA_TODEVICE);
2257                                 if (++next_to_use == tpd_ring->count)
2258                                         next_to_use = 0;
2259                         }
2260                 }
2261         } else {
2262                 /* not TSO */
2263                 buffer_info->length = buf_len;
2264                 page = virt_to_page(skb->data);
2265                 offset = (unsigned long)skb->data & ~PAGE_MASK;
2266                 buffer_info->dma = pci_map_page(adapter->pdev, page,
2267                         offset, buf_len, PCI_DMA_TODEVICE);
2268                 if (++next_to_use == tpd_ring->count)
2269                         next_to_use = 0;
2270         }
2271
2272         for (f = 0; f < nr_frags; f++) {
2273                 const struct skb_frag_struct *frag;
2274                 u16 i, nseg;
2275
2276                 frag = &skb_shinfo(skb)->frags[f];
2277                 buf_len = skb_frag_size(frag);
2278
2279                 nseg = (buf_len + ATL1_MAX_TX_BUF_LEN - 1) /
2280                         ATL1_MAX_TX_BUF_LEN;
2281                 for (i = 0; i < nseg; i++) {
2282                         buffer_info = &tpd_ring->buffer_info[next_to_use];
2283                         BUG_ON(buffer_info->skb);
2284
2285                         buffer_info->skb = NULL;
2286                         buffer_info->length = (buf_len > ATL1_MAX_TX_BUF_LEN) ?
2287                                 ATL1_MAX_TX_BUF_LEN : buf_len;
2288                         buf_len -= buffer_info->length;
2289                         buffer_info->dma = skb_frag_dma_map(&adapter->pdev->dev,
2290                                 frag, i * ATL1_MAX_TX_BUF_LEN,
2291                                 buffer_info->length, DMA_TO_DEVICE);
2292
2293                         if (++next_to_use == tpd_ring->count)
2294                                 next_to_use = 0;
2295                 }
2296         }
2297
2298         /* last tpd's buffer-info */
2299         buffer_info->skb = skb;
2300 }
2301
2302 static void atl1_tx_queue(struct atl1_adapter *adapter, u16 count,
2303        struct tx_packet_desc *ptpd)
2304 {
2305         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2306         struct atl1_buffer *buffer_info;
2307         struct tx_packet_desc *tpd;
2308         u16 j;
2309         u32 val;
2310         u16 next_to_use = (u16) atomic_read(&tpd_ring->next_to_use);
2311
2312         for (j = 0; j < count; j++) {
2313                 buffer_info = &tpd_ring->buffer_info[next_to_use];
2314                 tpd = ATL1_TPD_DESC(&adapter->tpd_ring, next_to_use);
2315                 if (tpd != ptpd)
2316                         memcpy(tpd, ptpd, sizeof(struct tx_packet_desc));
2317                 tpd->buffer_addr = cpu_to_le64(buffer_info->dma);
2318                 tpd->word2 &= ~(TPD_BUFLEN_MASK << TPD_BUFLEN_SHIFT);
2319                 tpd->word2 |= (cpu_to_le16(buffer_info->length) &
2320                         TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT;
2321
2322                 /*
2323                  * if this is the first packet in a TSO chain, set
2324                  * TPD_HDRFLAG, otherwise, clear it.
2325                  */
2326                 val = (tpd->word3 >> TPD_SEGMENT_EN_SHIFT) &
2327                         TPD_SEGMENT_EN_MASK;
2328                 if (val) {
2329                         if (!j)
2330                                 tpd->word3 |= 1 << TPD_HDRFLAG_SHIFT;
2331                         else
2332                                 tpd->word3 &= ~(1 << TPD_HDRFLAG_SHIFT);
2333                 }
2334
2335                 if (j == (count - 1))
2336                         tpd->word3 |= 1 << TPD_EOP_SHIFT;
2337
2338                 if (++next_to_use == tpd_ring->count)
2339                         next_to_use = 0;
2340         }
2341         /*
2342          * Force memory writes to complete before letting h/w
2343          * know there are new descriptors to fetch.  (Only
2344          * applicable for weak-ordered memory model archs,
2345          * such as IA-64).
2346          */
2347         wmb();
2348
2349         atomic_set(&tpd_ring->next_to_use, next_to_use);
2350 }
2351
2352 static netdev_tx_t atl1_xmit_frame(struct sk_buff *skb,
2353                                          struct net_device *netdev)
2354 {
2355         struct atl1_adapter *adapter = netdev_priv(netdev);
2356         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2357         int len;
2358         int tso;
2359         int count = 1;
2360         int ret_val;
2361         struct tx_packet_desc *ptpd;
2362         u16 vlan_tag;
2363         unsigned int nr_frags = 0;
2364         unsigned int mss = 0;
2365         unsigned int f;
2366         unsigned int proto_hdr_len;
2367
2368         len = skb_headlen(skb);
2369
2370         if (unlikely(skb->len <= 0)) {
2371                 dev_kfree_skb_any(skb);
2372                 return NETDEV_TX_OK;
2373         }
2374
2375         nr_frags = skb_shinfo(skb)->nr_frags;
2376         for (f = 0; f < nr_frags; f++) {
2377                 unsigned int f_size = skb_frag_size(&skb_shinfo(skb)->frags[f]);
2378                 count += (f_size + ATL1_MAX_TX_BUF_LEN - 1) /
2379                          ATL1_MAX_TX_BUF_LEN;
2380         }
2381
2382         mss = skb_shinfo(skb)->gso_size;
2383         if (mss) {
2384                 if (skb->protocol == htons(ETH_P_IP)) {
2385                         proto_hdr_len = (skb_transport_offset(skb) +
2386                                          tcp_hdrlen(skb));
2387                         if (unlikely(proto_hdr_len > len)) {
2388                                 dev_kfree_skb_any(skb);
2389                                 return NETDEV_TX_OK;
2390                         }
2391                         /* need additional TPD ? */
2392                         if (proto_hdr_len != len)
2393                                 count += (len - proto_hdr_len +
2394                                         ATL1_MAX_TX_BUF_LEN - 1) /
2395                                         ATL1_MAX_TX_BUF_LEN;
2396                 }
2397         }
2398
2399         if (atl1_tpd_avail(&adapter->tpd_ring) < count) {
2400                 /* not enough descriptors */
2401                 netif_stop_queue(netdev);
2402                 if (netif_msg_tx_queued(adapter))
2403                         dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2404                                 "tx busy\n");
2405                 return NETDEV_TX_BUSY;
2406         }
2407
2408         ptpd = ATL1_TPD_DESC(tpd_ring,
2409                 (u16) atomic_read(&tpd_ring->next_to_use));
2410         memset(ptpd, 0, sizeof(struct tx_packet_desc));
2411
2412         if (vlan_tx_tag_present(skb)) {
2413                 vlan_tag = vlan_tx_tag_get(skb);
2414                 vlan_tag = (vlan_tag << 4) | (vlan_tag >> 13) |
2415                         ((vlan_tag >> 9) & 0x8);
2416                 ptpd->word3 |= 1 << TPD_INS_VL_TAG_SHIFT;
2417                 ptpd->word2 |= (vlan_tag & TPD_VLANTAG_MASK) <<
2418                         TPD_VLANTAG_SHIFT;
2419         }
2420
2421         tso = atl1_tso(adapter, skb, ptpd);
2422         if (tso < 0) {
2423                 dev_kfree_skb_any(skb);
2424                 return NETDEV_TX_OK;
2425         }
2426
2427         if (!tso) {
2428                 ret_val = atl1_tx_csum(adapter, skb, ptpd);
2429                 if (ret_val < 0) {
2430                         dev_kfree_skb_any(skb);
2431                         return NETDEV_TX_OK;
2432                 }
2433         }
2434
2435         atl1_tx_map(adapter, skb, ptpd);
2436         atl1_tx_queue(adapter, count, ptpd);
2437         atl1_update_mailbox(adapter);
2438         mmiowb();
2439         return NETDEV_TX_OK;
2440 }
2441
2442 /*
2443  * atl1_intr - Interrupt Handler
2444  * @irq: interrupt number
2445  * @data: pointer to a network interface device structure
2446  * @pt_regs: CPU registers structure
2447  */
2448 static irqreturn_t atl1_intr(int irq, void *data)
2449 {
2450         struct atl1_adapter *adapter = netdev_priv(data);
2451         u32 status;
2452         int max_ints = 10;
2453
2454         status = adapter->cmb.cmb->int_stats;
2455         if (!status)
2456                 return IRQ_NONE;
2457
2458         do {
2459                 /* clear CMB interrupt status at once */
2460                 adapter->cmb.cmb->int_stats = 0;
2461
2462                 if (status & ISR_GPHY)  /* clear phy status */
2463                         atlx_clear_phy_int(adapter);
2464
2465                 /* clear ISR status, and Enable CMB DMA/Disable Interrupt */
2466                 iowrite32(status | ISR_DIS_INT, adapter->hw.hw_addr + REG_ISR);
2467
2468                 /* check if SMB intr */
2469                 if (status & ISR_SMB)
2470                         atl1_inc_smb(adapter);
2471
2472                 /* check if PCIE PHY Link down */
2473                 if (status & ISR_PHY_LINKDOWN) {
2474                         if (netif_msg_intr(adapter))
2475                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2476                                         "pcie phy link down %x\n", status);
2477                         if (netif_running(adapter->netdev)) {   /* reset MAC */
2478                                 iowrite32(0, adapter->hw.hw_addr + REG_IMR);
2479                                 schedule_work(&adapter->reset_dev_task);
2480                                 return IRQ_HANDLED;
2481                         }
2482                 }
2483
2484                 /* check if DMA read/write error ? */
2485                 if (status & (ISR_DMAR_TO_RST | ISR_DMAW_TO_RST)) {
2486                         if (netif_msg_intr(adapter))
2487                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2488                                         "pcie DMA r/w error (status = 0x%x)\n",
2489                                         status);
2490                         iowrite32(0, adapter->hw.hw_addr + REG_IMR);
2491                         schedule_work(&adapter->reset_dev_task);
2492                         return IRQ_HANDLED;
2493                 }
2494
2495                 /* link event */
2496                 if (status & ISR_GPHY) {
2497                         adapter->soft_stats.tx_carrier_errors++;
2498                         atl1_check_for_link(adapter);
2499                 }
2500
2501                 /* transmit event */
2502                 if (status & ISR_CMB_TX)
2503                         atl1_intr_tx(adapter);
2504
2505                 /* rx exception */
2506                 if (unlikely(status & (ISR_RXF_OV | ISR_RFD_UNRUN |
2507                         ISR_RRD_OV | ISR_HOST_RFD_UNRUN |
2508                         ISR_HOST_RRD_OV | ISR_CMB_RX))) {
2509                         if (status & (ISR_RXF_OV | ISR_RFD_UNRUN |
2510                                 ISR_RRD_OV | ISR_HOST_RFD_UNRUN |
2511                                 ISR_HOST_RRD_OV))
2512                                 if (netif_msg_intr(adapter))
2513                                         dev_printk(KERN_DEBUG,
2514                                                 &adapter->pdev->dev,
2515                                                 "rx exception, ISR = 0x%x\n",
2516                                                 status);
2517                         atl1_intr_rx(adapter);
2518                 }
2519
2520                 if (--max_ints < 0)
2521                         break;
2522
2523         } while ((status = adapter->cmb.cmb->int_stats));
2524
2525         /* re-enable Interrupt */
2526         iowrite32(ISR_DIS_SMB | ISR_DIS_DMA, adapter->hw.hw_addr + REG_ISR);
2527         return IRQ_HANDLED;
2528 }
2529
2530
2531 /*
2532  * atl1_phy_config - Timer Call-back
2533  * @data: pointer to netdev cast into an unsigned long
2534  */
2535 static void atl1_phy_config(unsigned long data)
2536 {
2537         struct atl1_adapter *adapter = (struct atl1_adapter *)data;
2538         struct atl1_hw *hw = &adapter->hw;
2539         unsigned long flags;
2540
2541         spin_lock_irqsave(&adapter->lock, flags);
2542         adapter->phy_timer_pending = false;
2543         atl1_write_phy_reg(hw, MII_ADVERTISE, hw->mii_autoneg_adv_reg);
2544         atl1_write_phy_reg(hw, MII_ATLX_CR, hw->mii_1000t_ctrl_reg);
2545         atl1_write_phy_reg(hw, MII_BMCR, MII_CR_RESET | MII_CR_AUTO_NEG_EN);
2546         spin_unlock_irqrestore(&adapter->lock, flags);
2547 }
2548
2549 /*
2550  * Orphaned vendor comment left intact here:
2551  * <vendor comment>
2552  * If TPD Buffer size equal to 0, PCIE DMAR_TO_INT
2553  * will assert. We do soft reset <0x1400=1> according
2554  * with the SPEC. BUT, it seemes that PCIE or DMA
2555  * state-machine will not be reset. DMAR_TO_INT will
2556  * assert again and again.
2557  * </vendor comment>
2558  */
2559
2560 static int atl1_reset(struct atl1_adapter *adapter)
2561 {
2562         int ret;
2563         ret = atl1_reset_hw(&adapter->hw);
2564         if (ret)
2565                 return ret;
2566         return atl1_init_hw(&adapter->hw);
2567 }
2568
2569 static s32 atl1_up(struct atl1_adapter *adapter)
2570 {
2571         struct net_device *netdev = adapter->netdev;
2572         int err;
2573         int irq_flags = 0;
2574
2575         /* hardware has been reset, we need to reload some things */
2576         atlx_set_multi(netdev);
2577         atl1_init_ring_ptrs(adapter);
2578         atlx_restore_vlan(adapter);
2579         err = atl1_alloc_rx_buffers(adapter);
2580         if (unlikely(!err))
2581                 /* no RX BUFFER allocated */
2582                 return -ENOMEM;
2583
2584         if (unlikely(atl1_configure(adapter))) {
2585                 err = -EIO;
2586                 goto err_up;
2587         }
2588
2589         err = pci_enable_msi(adapter->pdev);
2590         if (err) {
2591                 if (netif_msg_ifup(adapter))
2592                         dev_info(&adapter->pdev->dev,
2593                                 "Unable to enable MSI: %d\n", err);
2594                 irq_flags |= IRQF_SHARED;
2595         }
2596
2597         err = request_irq(adapter->pdev->irq, atl1_intr, irq_flags,
2598                         netdev->name, netdev);
2599         if (unlikely(err))
2600                 goto err_up;
2601
2602         atlx_irq_enable(adapter);
2603         atl1_check_link(adapter);
2604         netif_start_queue(netdev);
2605         return 0;
2606
2607 err_up:
2608         pci_disable_msi(adapter->pdev);
2609         /* free rx_buffers */
2610         atl1_clean_rx_ring(adapter);
2611         return err;
2612 }
2613
2614 static void atl1_down(struct atl1_adapter *adapter)
2615 {
2616         struct net_device *netdev = adapter->netdev;
2617
2618         netif_stop_queue(netdev);
2619         del_timer_sync(&adapter->phy_config_timer);
2620         adapter->phy_timer_pending = false;
2621
2622         atlx_irq_disable(adapter);
2623         free_irq(adapter->pdev->irq, netdev);
2624         pci_disable_msi(adapter->pdev);
2625         atl1_reset_hw(&adapter->hw);
2626         adapter->cmb.cmb->int_stats = 0;
2627
2628         adapter->link_speed = SPEED_0;
2629         adapter->link_duplex = -1;
2630         netif_carrier_off(netdev);
2631
2632         atl1_clean_tx_ring(adapter);
2633         atl1_clean_rx_ring(adapter);
2634 }
2635
2636 static void atl1_reset_dev_task(struct work_struct *work)
2637 {
2638         struct atl1_adapter *adapter =
2639                 container_of(work, struct atl1_adapter, reset_dev_task);
2640         struct net_device *netdev = adapter->netdev;
2641
2642         netif_device_detach(netdev);
2643         atl1_down(adapter);
2644         atl1_up(adapter);
2645         netif_device_attach(netdev);
2646 }
2647
2648 /*
2649  * atl1_change_mtu - Change the Maximum Transfer Unit
2650  * @netdev: network interface device structure
2651  * @new_mtu: new value for maximum frame size
2652  *
2653  * Returns 0 on success, negative on failure
2654  */
2655 static int atl1_change_mtu(struct net_device *netdev, int new_mtu)
2656 {
2657         struct atl1_adapter *adapter = netdev_priv(netdev);
2658         int old_mtu = netdev->mtu;
2659         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2660
2661         if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) ||
2662             (max_frame > MAX_JUMBO_FRAME_SIZE)) {
2663                 if (netif_msg_link(adapter))
2664                         dev_warn(&adapter->pdev->dev, "invalid MTU setting\n");
2665                 return -EINVAL;
2666         }
2667
2668         adapter->hw.max_frame_size = max_frame;
2669         adapter->hw.tx_jumbo_task_th = (max_frame + 7) >> 3;
2670         adapter->rx_buffer_len = (max_frame + 7) & ~7;
2671         adapter->hw.rx_jumbo_th = adapter->rx_buffer_len / 8;
2672
2673         netdev->mtu = new_mtu;
2674         if ((old_mtu != new_mtu) && netif_running(netdev)) {
2675                 atl1_down(adapter);
2676                 atl1_up(adapter);
2677         }
2678
2679         return 0;
2680 }
2681
2682 /*
2683  * atl1_open - Called when a network interface is made active
2684  * @netdev: network interface device structure
2685  *
2686  * Returns 0 on success, negative value on failure
2687  *
2688  * The open entry point is called when a network interface is made
2689  * active by the system (IFF_UP).  At this point all resources needed
2690  * for transmit and receive operations are allocated, the interrupt
2691  * handler is registered with the OS, the watchdog timer is started,
2692  * and the stack is notified that the interface is ready.
2693  */
2694 static int atl1_open(struct net_device *netdev)
2695 {
2696         struct atl1_adapter *adapter = netdev_priv(netdev);
2697         int err;
2698
2699         netif_carrier_off(netdev);
2700
2701         /* allocate transmit descriptors */
2702         err = atl1_setup_ring_resources(adapter);
2703         if (err)
2704                 return err;
2705
2706         err = atl1_up(adapter);
2707         if (err)
2708                 goto err_up;
2709
2710         return 0;
2711
2712 err_up:
2713         atl1_reset(adapter);
2714         return err;
2715 }
2716
2717 /*
2718  * atl1_close - Disables a network interface
2719  * @netdev: network interface device structure
2720  *
2721  * Returns 0, this is not allowed to fail
2722  *
2723  * The close entry point is called when an interface is de-activated
2724  * by the OS.  The hardware is still under the drivers control, but
2725  * needs to be disabled.  A global MAC reset is issued to stop the
2726  * hardware, and all transmit and receive resources are freed.
2727  */
2728 static int atl1_close(struct net_device *netdev)
2729 {
2730         struct atl1_adapter *adapter = netdev_priv(netdev);
2731         atl1_down(adapter);
2732         atl1_free_ring_resources(adapter);
2733         return 0;
2734 }
2735
2736 #ifdef CONFIG_PM
2737 static int atl1_suspend(struct device *dev)
2738 {
2739         struct pci_dev *pdev = to_pci_dev(dev);
2740         struct net_device *netdev = pci_get_drvdata(pdev);
2741         struct atl1_adapter *adapter = netdev_priv(netdev);
2742         struct atl1_hw *hw = &adapter->hw;
2743         u32 ctrl = 0;
2744         u32 wufc = adapter->wol;
2745         u32 val;
2746         u16 speed;
2747         u16 duplex;
2748
2749         netif_device_detach(netdev);
2750         if (netif_running(netdev))
2751                 atl1_down(adapter);
2752
2753         atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl);
2754         atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl);
2755         val = ctrl & BMSR_LSTATUS;
2756         if (val)
2757                 wufc &= ~ATLX_WUFC_LNKC;
2758         if (!wufc)
2759                 goto disable_wol;
2760
2761         if (val) {
2762                 val = atl1_get_speed_and_duplex(hw, &speed, &duplex);
2763                 if (val) {
2764                         if (netif_msg_ifdown(adapter))
2765                                 dev_printk(KERN_DEBUG, &pdev->dev,
2766                                         "error getting speed/duplex\n");
2767                         goto disable_wol;
2768                 }
2769
2770                 ctrl = 0;
2771
2772                 /* enable magic packet WOL */
2773                 if (wufc & ATLX_WUFC_MAG)
2774                         ctrl |= (WOL_MAGIC_EN | WOL_MAGIC_PME_EN);
2775                 iowrite32(ctrl, hw->hw_addr + REG_WOL_CTRL);
2776                 ioread32(hw->hw_addr + REG_WOL_CTRL);
2777
2778                 /* configure the mac */
2779                 ctrl = MAC_CTRL_RX_EN;
2780                 ctrl |= ((u32)((speed == SPEED_1000) ? MAC_CTRL_SPEED_1000 :
2781                         MAC_CTRL_SPEED_10_100) << MAC_CTRL_SPEED_SHIFT);
2782                 if (duplex == FULL_DUPLEX)
2783                         ctrl |= MAC_CTRL_DUPLX;
2784                 ctrl |= (((u32)adapter->hw.preamble_len &
2785                         MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT);
2786                 __atlx_vlan_mode(netdev->features, &ctrl);
2787                 if (wufc & ATLX_WUFC_MAG)
2788                         ctrl |= MAC_CTRL_BC_EN;
2789                 iowrite32(ctrl, hw->hw_addr + REG_MAC_CTRL);
2790                 ioread32(hw->hw_addr + REG_MAC_CTRL);
2791
2792                 /* poke the PHY */
2793                 ctrl = ioread32(hw->hw_addr + REG_PCIE_PHYMISC);
2794                 ctrl |= PCIE_PHYMISC_FORCE_RCV_DET;
2795                 iowrite32(ctrl, hw->hw_addr + REG_PCIE_PHYMISC);
2796                 ioread32(hw->hw_addr + REG_PCIE_PHYMISC);
2797         } else {
2798                 ctrl |= (WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN);
2799                 iowrite32(ctrl, hw->hw_addr + REG_WOL_CTRL);
2800                 ioread32(hw->hw_addr + REG_WOL_CTRL);
2801                 iowrite32(0, hw->hw_addr + REG_MAC_CTRL);
2802                 ioread32(hw->hw_addr + REG_MAC_CTRL);
2803                 hw->phy_configured = false;
2804         }
2805
2806         return 0;
2807
2808  disable_wol:
2809         iowrite32(0, hw->hw_addr + REG_WOL_CTRL);
2810         ioread32(hw->hw_addr + REG_WOL_CTRL);
2811         ctrl = ioread32(hw->hw_addr + REG_PCIE_PHYMISC);
2812         ctrl |= PCIE_PHYMISC_FORCE_RCV_DET;
2813         iowrite32(ctrl, hw->hw_addr + REG_PCIE_PHYMISC);
2814         ioread32(hw->hw_addr + REG_PCIE_PHYMISC);
2815         hw->phy_configured = false;
2816
2817         return 0;
2818 }
2819
2820 static int atl1_resume(struct device *dev)
2821 {
2822         struct pci_dev *pdev = to_pci_dev(dev);
2823         struct net_device *netdev = pci_get_drvdata(pdev);
2824         struct atl1_adapter *adapter = netdev_priv(netdev);
2825
2826         iowrite32(0, adapter->hw.hw_addr + REG_WOL_CTRL);
2827
2828         atl1_reset_hw(&adapter->hw);
2829
2830         if (netif_running(netdev)) {
2831                 adapter->cmb.cmb->int_stats = 0;
2832                 atl1_up(adapter);
2833         }
2834         netif_device_attach(netdev);
2835
2836         return 0;
2837 }
2838
2839 static SIMPLE_DEV_PM_OPS(atl1_pm_ops, atl1_suspend, atl1_resume);
2840 #define ATL1_PM_OPS     (&atl1_pm_ops)
2841
2842 #else
2843
2844 static int atl1_suspend(struct device *dev) { return 0; }
2845
2846 #define ATL1_PM_OPS     NULL
2847 #endif
2848
2849 static void atl1_shutdown(struct pci_dev *pdev)
2850 {
2851         struct net_device *netdev = pci_get_drvdata(pdev);
2852         struct atl1_adapter *adapter = netdev_priv(netdev);
2853
2854         atl1_suspend(&pdev->dev);
2855         pci_wake_from_d3(pdev, adapter->wol);
2856         pci_set_power_state(pdev, PCI_D3hot);
2857 }
2858
2859 #ifdef CONFIG_NET_POLL_CONTROLLER
2860 static void atl1_poll_controller(struct net_device *netdev)
2861 {
2862         disable_irq(netdev->irq);
2863         atl1_intr(netdev->irq, netdev);
2864         enable_irq(netdev->irq);
2865 }
2866 #endif
2867
2868 static const struct net_device_ops atl1_netdev_ops = {
2869         .ndo_open               = atl1_open,
2870         .ndo_stop               = atl1_close,
2871         .ndo_start_xmit         = atl1_xmit_frame,
2872         .ndo_set_rx_mode        = atlx_set_multi,
2873         .ndo_validate_addr      = eth_validate_addr,
2874         .ndo_set_mac_address    = atl1_set_mac,
2875         .ndo_change_mtu         = atl1_change_mtu,
2876         .ndo_fix_features       = atlx_fix_features,
2877         .ndo_set_features       = atlx_set_features,
2878         .ndo_do_ioctl           = atlx_ioctl,
2879         .ndo_tx_timeout         = atlx_tx_timeout,
2880 #ifdef CONFIG_NET_POLL_CONTROLLER
2881         .ndo_poll_controller    = atl1_poll_controller,
2882 #endif
2883 };
2884
2885 /*
2886  * atl1_probe - Device Initialization Routine
2887  * @pdev: PCI device information struct
2888  * @ent: entry in atl1_pci_tbl
2889  *
2890  * Returns 0 on success, negative on failure
2891  *
2892  * atl1_probe initializes an adapter identified by a pci_dev structure.
2893  * The OS initialization, configuring of the adapter private structure,
2894  * and a hardware reset occur.
2895  */
2896 static int __devinit atl1_probe(struct pci_dev *pdev,
2897         const struct pci_device_id *ent)
2898 {
2899         struct net_device *netdev;
2900         struct atl1_adapter *adapter;
2901         static int cards_found = 0;
2902         int err;
2903
2904         err = pci_enable_device(pdev);
2905         if (err)
2906                 return err;
2907
2908         /*
2909          * The atl1 chip can DMA to 64-bit addresses, but it uses a single
2910          * shared register for the high 32 bits, so only a single, aligned,
2911          * 4 GB physical address range can be used at a time.
2912          *
2913          * Supporting 64-bit DMA on this hardware is more trouble than it's
2914          * worth.  It is far easier to limit to 32-bit DMA than update
2915          * various kernel subsystems to support the mechanics required by a
2916          * fixed-high-32-bit system.
2917          */
2918         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2919         if (err) {
2920                 dev_err(&pdev->dev, "no usable DMA configuration\n");
2921                 goto err_dma;
2922         }
2923         /*
2924          * Mark all PCI regions associated with PCI device
2925          * pdev as being reserved by owner atl1_driver_name
2926          */
2927         err = pci_request_regions(pdev, ATLX_DRIVER_NAME);
2928         if (err)
2929                 goto err_request_regions;
2930
2931         /*
2932          * Enables bus-mastering on the device and calls
2933          * pcibios_set_master to do the needed arch specific settings
2934          */
2935         pci_set_master(pdev);
2936
2937         netdev = alloc_etherdev(sizeof(struct atl1_adapter));
2938         if (!netdev) {
2939                 err = -ENOMEM;
2940                 goto err_alloc_etherdev;
2941         }
2942         SET_NETDEV_DEV(netdev, &pdev->dev);
2943
2944         pci_set_drvdata(pdev, netdev);
2945         adapter = netdev_priv(netdev);
2946         adapter->netdev = netdev;
2947         adapter->pdev = pdev;
2948         adapter->hw.back = adapter;
2949         adapter->msg_enable = netif_msg_init(debug, atl1_default_msg);
2950
2951         adapter->hw.hw_addr = pci_iomap(pdev, 0, 0);
2952         if (!adapter->hw.hw_addr) {
2953                 err = -EIO;
2954                 goto err_pci_iomap;
2955         }
2956         /* get device revision number */
2957         adapter->hw.dev_rev = ioread16(adapter->hw.hw_addr +
2958                 (REG_MASTER_CTRL + 2));
2959         if (netif_msg_probe(adapter))
2960                 dev_info(&pdev->dev, "version %s\n", ATLX_DRIVER_VERSION);
2961
2962         /* set default ring resource counts */
2963         adapter->rfd_ring.count = adapter->rrd_ring.count = ATL1_DEFAULT_RFD;
2964         adapter->tpd_ring.count = ATL1_DEFAULT_TPD;
2965
2966         adapter->mii.dev = netdev;
2967         adapter->mii.mdio_read = mdio_read;
2968         adapter->mii.mdio_write = mdio_write;
2969         adapter->mii.phy_id_mask = 0x1f;
2970         adapter->mii.reg_num_mask = 0x1f;
2971
2972         netdev->netdev_ops = &atl1_netdev_ops;
2973         netdev->watchdog_timeo = 5 * HZ;
2974
2975         netdev->ethtool_ops = &atl1_ethtool_ops;
2976         adapter->bd_number = cards_found;
2977
2978         /* setup the private structure */
2979         err = atl1_sw_init(adapter);
2980         if (err)
2981                 goto err_common;
2982
2983         netdev->features = NETIF_F_HW_CSUM;
2984         netdev->features |= NETIF_F_SG;
2985         netdev->features |= (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX);
2986
2987         netdev->hw_features = NETIF_F_HW_CSUM | NETIF_F_SG | NETIF_F_TSO |
2988                               NETIF_F_HW_VLAN_RX;
2989
2990         /* is this valid? see atl1_setup_mac_ctrl() */
2991         netdev->features |= NETIF_F_RXCSUM;
2992
2993         /*
2994          * patch for some L1 of old version,
2995          * the final version of L1 may not need these
2996          * patches
2997          */
2998         /* atl1_pcie_patch(adapter); */
2999
3000         /* really reset GPHY core */
3001         iowrite16(0, adapter->hw.hw_addr + REG_PHY_ENABLE);
3002
3003         /*
3004          * reset the controller to
3005          * put the device in a known good starting state
3006          */
3007         if (atl1_reset_hw(&adapter->hw)) {
3008                 err = -EIO;
3009                 goto err_common;
3010         }
3011
3012         /* copy the MAC address out of the EEPROM */
3013         if (atl1_read_mac_addr(&adapter->hw)) {
3014                 /* mark random mac */
3015                 netdev->addr_assign_type |= NET_ADDR_RANDOM;
3016         }
3017         memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
3018
3019         if (!is_valid_ether_addr(netdev->dev_addr)) {
3020                 err = -EIO;
3021                 goto err_common;
3022         }
3023
3024         atl1_check_options(adapter);
3025
3026         /* pre-init the MAC, and setup link */
3027         err = atl1_init_hw(&adapter->hw);
3028         if (err) {
3029                 err = -EIO;
3030                 goto err_common;
3031         }
3032
3033         atl1_pcie_patch(adapter);
3034         /* assume we have no link for now */
3035         netif_carrier_off(netdev);
3036
3037         setup_timer(&adapter->phy_config_timer, atl1_phy_config,
3038                     (unsigned long)adapter);
3039         adapter->phy_timer_pending = false;
3040
3041         INIT_WORK(&adapter->reset_dev_task, atl1_reset_dev_task);
3042
3043         INIT_WORK(&adapter->link_chg_task, atlx_link_chg_task);
3044
3045         err = register_netdev(netdev);
3046         if (err)
3047                 goto err_common;
3048
3049         cards_found++;
3050         atl1_via_workaround(adapter);
3051         return 0;
3052
3053 err_common:
3054         pci_iounmap(pdev, adapter->hw.hw_addr);
3055 err_pci_iomap:
3056         free_netdev(netdev);
3057 err_alloc_etherdev:
3058         pci_release_regions(pdev);
3059 err_dma:
3060 err_request_regions:
3061         pci_disable_device(pdev);
3062         return err;
3063 }
3064
3065 /*
3066  * atl1_remove - Device Removal Routine
3067  * @pdev: PCI device information struct
3068  *
3069  * atl1_remove is called by the PCI subsystem to alert the driver
3070  * that it should release a PCI device.  The could be caused by a
3071  * Hot-Plug event, or because the driver is going to be removed from
3072  * memory.
3073  */
3074 static void __devexit atl1_remove(struct pci_dev *pdev)
3075 {
3076         struct net_device *netdev = pci_get_drvdata(pdev);
3077         struct atl1_adapter *adapter;
3078         /* Device not available. Return. */
3079         if (!netdev)
3080                 return;
3081
3082         adapter = netdev_priv(netdev);
3083
3084         /*
3085          * Some atl1 boards lack persistent storage for their MAC, and get it
3086          * from the BIOS during POST.  If we've been messing with the MAC
3087          * address, we need to save the permanent one.
3088          */
3089         if (memcmp(adapter->hw.mac_addr, adapter->hw.perm_mac_addr, ETH_ALEN)) {
3090                 memcpy(adapter->hw.mac_addr, adapter->hw.perm_mac_addr,
3091                         ETH_ALEN);
3092                 atl1_set_mac_addr(&adapter->hw);
3093         }
3094
3095         iowrite16(0, adapter->hw.hw_addr + REG_PHY_ENABLE);
3096         unregister_netdev(netdev);
3097         pci_iounmap(pdev, adapter->hw.hw_addr);
3098         pci_release_regions(pdev);
3099         free_netdev(netdev);
3100         pci_disable_device(pdev);
3101 }
3102
3103 static struct pci_driver atl1_driver = {
3104         .name = ATLX_DRIVER_NAME,
3105         .id_table = atl1_pci_tbl,
3106         .probe = atl1_probe,
3107         .remove = __devexit_p(atl1_remove),
3108         .shutdown = atl1_shutdown,
3109         .driver.pm = ATL1_PM_OPS,
3110 };
3111
3112 /*
3113  * atl1_exit_module - Driver Exit Cleanup Routine
3114  *
3115  * atl1_exit_module is called just before the driver is removed
3116  * from memory.
3117  */
3118 static void __exit atl1_exit_module(void)
3119 {
3120         pci_unregister_driver(&atl1_driver);
3121 }
3122
3123 /*
3124  * atl1_init_module - Driver Registration Routine
3125  *
3126  * atl1_init_module is the first routine called when the driver is
3127  * loaded. All it does is register with the PCI subsystem.
3128  */
3129 static int __init atl1_init_module(void)
3130 {
3131         return pci_register_driver(&atl1_driver);
3132 }
3133
3134 module_init(atl1_init_module);
3135 module_exit(atl1_exit_module);
3136
3137 struct atl1_stats {
3138         char stat_string[ETH_GSTRING_LEN];
3139         int sizeof_stat;
3140         int stat_offset;
3141 };
3142
3143 #define ATL1_STAT(m) \
3144         sizeof(((struct atl1_adapter *)0)->m), offsetof(struct atl1_adapter, m)
3145
3146 static struct atl1_stats atl1_gstrings_stats[] = {
3147         {"rx_packets", ATL1_STAT(soft_stats.rx_packets)},
3148         {"tx_packets", ATL1_STAT(soft_stats.tx_packets)},
3149         {"rx_bytes", ATL1_STAT(soft_stats.rx_bytes)},
3150         {"tx_bytes", ATL1_STAT(soft_stats.tx_bytes)},
3151         {"rx_errors", ATL1_STAT(soft_stats.rx_errors)},
3152         {"tx_errors", ATL1_STAT(soft_stats.tx_errors)},
3153         {"multicast", ATL1_STAT(soft_stats.multicast)},
3154         {"collisions", ATL1_STAT(soft_stats.collisions)},
3155         {"rx_length_errors", ATL1_STAT(soft_stats.rx_length_errors)},
3156         {"rx_over_errors", ATL1_STAT(soft_stats.rx_missed_errors)},
3157         {"rx_crc_errors", ATL1_STAT(soft_stats.rx_crc_errors)},
3158         {"rx_frame_errors", ATL1_STAT(soft_stats.rx_frame_errors)},
3159         {"rx_fifo_errors", ATL1_STAT(soft_stats.rx_fifo_errors)},
3160         {"rx_missed_errors", ATL1_STAT(soft_stats.rx_missed_errors)},
3161         {"tx_aborted_errors", ATL1_STAT(soft_stats.tx_aborted_errors)},
3162         {"tx_carrier_errors", ATL1_STAT(soft_stats.tx_carrier_errors)},
3163         {"tx_fifo_errors", ATL1_STAT(soft_stats.tx_fifo_errors)},
3164         {"tx_window_errors", ATL1_STAT(soft_stats.tx_window_errors)},
3165         {"tx_abort_exce_coll", ATL1_STAT(soft_stats.excecol)},
3166         {"tx_abort_late_coll", ATL1_STAT(soft_stats.latecol)},
3167         {"tx_deferred_ok", ATL1_STAT(soft_stats.deffer)},
3168         {"tx_single_coll_ok", ATL1_STAT(soft_stats.scc)},
3169         {"tx_multi_coll_ok", ATL1_STAT(soft_stats.mcc)},
3170         {"tx_underun", ATL1_STAT(soft_stats.tx_underun)},
3171         {"tx_trunc", ATL1_STAT(soft_stats.tx_trunc)},
3172         {"tx_pause", ATL1_STAT(soft_stats.tx_pause)},
3173         {"rx_pause", ATL1_STAT(soft_stats.rx_pause)},
3174         {"rx_rrd_ov", ATL1_STAT(soft_stats.rx_rrd_ov)},
3175         {"rx_trunc", ATL1_STAT(soft_stats.rx_trunc)}
3176 };
3177
3178 static void atl1_get_ethtool_stats(struct net_device *netdev,
3179         struct ethtool_stats *stats, u64 *data)
3180 {
3181         struct atl1_adapter *adapter = netdev_priv(netdev);
3182         int i;
3183         char *p;
3184
3185         for (i = 0; i < ARRAY_SIZE(atl1_gstrings_stats); i++) {
3186                 p = (char *)adapter+atl1_gstrings_stats[i].stat_offset;
3187                 data[i] = (atl1_gstrings_stats[i].sizeof_stat ==
3188                         sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
3189         }
3190
3191 }
3192
3193 static int atl1_get_sset_count(struct net_device *netdev, int sset)
3194 {
3195         switch (sset) {
3196         case ETH_SS_STATS:
3197                 return ARRAY_SIZE(atl1_gstrings_stats);
3198         default:
3199                 return -EOPNOTSUPP;
3200         }
3201 }
3202
3203 static int atl1_get_settings(struct net_device *netdev,
3204         struct ethtool_cmd *ecmd)
3205 {
3206         struct atl1_adapter *adapter = netdev_priv(netdev);
3207         struct atl1_hw *hw = &adapter->hw;
3208
3209         ecmd->supported = (SUPPORTED_10baseT_Half |
3210                            SUPPORTED_10baseT_Full |
3211                            SUPPORTED_100baseT_Half |
3212                            SUPPORTED_100baseT_Full |
3213                            SUPPORTED_1000baseT_Full |
3214                            SUPPORTED_Autoneg | SUPPORTED_TP);
3215         ecmd->advertising = ADVERTISED_TP;
3216         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3217             hw->media_type == MEDIA_TYPE_1000M_FULL) {
3218                 ecmd->advertising |= ADVERTISED_Autoneg;
3219                 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR) {
3220                         ecmd->advertising |= ADVERTISED_Autoneg;
3221                         ecmd->advertising |=
3222                             (ADVERTISED_10baseT_Half |
3223                              ADVERTISED_10baseT_Full |
3224                              ADVERTISED_100baseT_Half |
3225                              ADVERTISED_100baseT_Full |
3226                              ADVERTISED_1000baseT_Full);
3227                 } else
3228                         ecmd->advertising |= (ADVERTISED_1000baseT_Full);
3229         }
3230         ecmd->port = PORT_TP;
3231         ecmd->phy_address = 0;
3232         ecmd->transceiver = XCVR_INTERNAL;
3233
3234         if (netif_carrier_ok(adapter->netdev)) {
3235                 u16 link_speed, link_duplex;
3236                 atl1_get_speed_and_duplex(hw, &link_speed, &link_duplex);
3237                 ethtool_cmd_speed_set(ecmd, link_speed);
3238                 if (link_duplex == FULL_DUPLEX)
3239                         ecmd->duplex = DUPLEX_FULL;
3240                 else
3241                         ecmd->duplex = DUPLEX_HALF;
3242         } else {
3243                 ethtool_cmd_speed_set(ecmd, -1);
3244                 ecmd->duplex = -1;
3245         }
3246         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3247             hw->media_type == MEDIA_TYPE_1000M_FULL)
3248                 ecmd->autoneg = AUTONEG_ENABLE;
3249         else
3250                 ecmd->autoneg = AUTONEG_DISABLE;
3251
3252         return 0;
3253 }
3254
3255 static int atl1_set_settings(struct net_device *netdev,
3256         struct ethtool_cmd *ecmd)
3257 {
3258         struct atl1_adapter *adapter = netdev_priv(netdev);
3259         struct atl1_hw *hw = &adapter->hw;
3260         u16 phy_data;
3261         int ret_val = 0;
3262         u16 old_media_type = hw->media_type;
3263
3264         if (netif_running(adapter->netdev)) {
3265                 if (netif_msg_link(adapter))
3266                         dev_dbg(&adapter->pdev->dev,
3267                                 "ethtool shutting down adapter\n");
3268                 atl1_down(adapter);
3269         }
3270
3271         if (ecmd->autoneg == AUTONEG_ENABLE)
3272                 hw->media_type = MEDIA_TYPE_AUTO_SENSOR;
3273         else {
3274                 u32 speed = ethtool_cmd_speed(ecmd);
3275                 if (speed == SPEED_1000) {
3276                         if (ecmd->duplex != DUPLEX_FULL) {
3277                                 if (netif_msg_link(adapter))
3278                                         dev_warn(&adapter->pdev->dev,
3279                                                 "1000M half is invalid\n");
3280                                 ret_val = -EINVAL;
3281                                 goto exit_sset;
3282                         }
3283                         hw->media_type = MEDIA_TYPE_1000M_FULL;
3284                 } else if (speed == SPEED_100) {
3285                         if (ecmd->duplex == DUPLEX_FULL)
3286                                 hw->media_type = MEDIA_TYPE_100M_FULL;
3287                         else
3288                                 hw->media_type = MEDIA_TYPE_100M_HALF;
3289                 } else {
3290                         if (ecmd->duplex == DUPLEX_FULL)
3291                                 hw->media_type = MEDIA_TYPE_10M_FULL;
3292                         else
3293                                 hw->media_type = MEDIA_TYPE_10M_HALF;
3294                 }
3295         }
3296         switch (hw->media_type) {
3297         case MEDIA_TYPE_AUTO_SENSOR:
3298                 ecmd->advertising =
3299                     ADVERTISED_10baseT_Half |
3300                     ADVERTISED_10baseT_Full |
3301                     ADVERTISED_100baseT_Half |
3302                     ADVERTISED_100baseT_Full |
3303                     ADVERTISED_1000baseT_Full |
3304                     ADVERTISED_Autoneg | ADVERTISED_TP;
3305                 break;
3306         case MEDIA_TYPE_1000M_FULL:
3307                 ecmd->advertising =
3308                     ADVERTISED_1000baseT_Full |
3309                     ADVERTISED_Autoneg | ADVERTISED_TP;
3310                 break;
3311         default:
3312                 ecmd->advertising = 0;
3313                 break;
3314         }
3315         if (atl1_phy_setup_autoneg_adv(hw)) {
3316                 ret_val = -EINVAL;
3317                 if (netif_msg_link(adapter))
3318                         dev_warn(&adapter->pdev->dev,
3319                                 "invalid ethtool speed/duplex setting\n");
3320                 goto exit_sset;
3321         }
3322         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3323             hw->media_type == MEDIA_TYPE_1000M_FULL)
3324                 phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN;
3325         else {
3326                 switch (hw->media_type) {
3327                 case MEDIA_TYPE_100M_FULL:
3328                         phy_data =
3329                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
3330                             MII_CR_RESET;
3331                         break;
3332                 case MEDIA_TYPE_100M_HALF:
3333                         phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
3334                         break;
3335                 case MEDIA_TYPE_10M_FULL:
3336                         phy_data =
3337                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
3338                         break;
3339                 default:
3340                         /* MEDIA_TYPE_10M_HALF: */
3341                         phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
3342                         break;
3343                 }
3344         }
3345         atl1_write_phy_reg(hw, MII_BMCR, phy_data);
3346 exit_sset:
3347         if (ret_val)
3348                 hw->media_type = old_media_type;
3349
3350         if (netif_running(adapter->netdev)) {
3351                 if (netif_msg_link(adapter))
3352                         dev_dbg(&adapter->pdev->dev,
3353                                 "ethtool starting adapter\n");
3354                 atl1_up(adapter);
3355         } else if (!ret_val) {
3356                 if (netif_msg_link(adapter))
3357                         dev_dbg(&adapter->pdev->dev,
3358                                 "ethtool resetting adapter\n");
3359                 atl1_reset(adapter);
3360         }
3361         return ret_val;
3362 }
3363
3364 static void atl1_get_drvinfo(struct net_device *netdev,
3365         struct ethtool_drvinfo *drvinfo)
3366 {
3367         struct atl1_adapter *adapter = netdev_priv(netdev);
3368
3369         strlcpy(drvinfo->driver, ATLX_DRIVER_NAME, sizeof(drvinfo->driver));
3370         strlcpy(drvinfo->version, ATLX_DRIVER_VERSION,
3371                 sizeof(drvinfo->version));
3372         strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
3373                 sizeof(drvinfo->bus_info));
3374         drvinfo->eedump_len = ATL1_EEDUMP_LEN;
3375 }
3376
3377 static void atl1_get_wol(struct net_device *netdev,
3378         struct ethtool_wolinfo *wol)
3379 {
3380         struct atl1_adapter *adapter = netdev_priv(netdev);
3381
3382         wol->supported = WAKE_MAGIC;
3383         wol->wolopts = 0;
3384         if (adapter->wol & ATLX_WUFC_MAG)
3385                 wol->wolopts |= WAKE_MAGIC;
3386 }
3387
3388 static int atl1_set_wol(struct net_device *netdev,
3389         struct ethtool_wolinfo *wol)
3390 {
3391         struct atl1_adapter *adapter = netdev_priv(netdev);
3392
3393         if (wol->wolopts & (WAKE_PHY | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST |
3394                 WAKE_ARP | WAKE_MAGICSECURE))
3395                 return -EOPNOTSUPP;
3396         adapter->wol = 0;
3397         if (wol->wolopts & WAKE_MAGIC)
3398                 adapter->wol |= ATLX_WUFC_MAG;
3399
3400         device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
3401
3402         return 0;
3403 }
3404
3405 static u32 atl1_get_msglevel(struct net_device *netdev)
3406 {
3407         struct atl1_adapter *adapter = netdev_priv(netdev);
3408         return adapter->msg_enable;
3409 }
3410
3411 static void atl1_set_msglevel(struct net_device *netdev, u32 value)
3412 {
3413         struct atl1_adapter *adapter = netdev_priv(netdev);
3414         adapter->msg_enable = value;
3415 }
3416
3417 static int atl1_get_regs_len(struct net_device *netdev)
3418 {
3419         return ATL1_REG_COUNT * sizeof(u32);
3420 }
3421
3422 static void atl1_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
3423         void *p)
3424 {
3425         struct atl1_adapter *adapter = netdev_priv(netdev);
3426         struct atl1_hw *hw = &adapter->hw;
3427         unsigned int i;
3428         u32 *regbuf = p;
3429
3430         for (i = 0; i < ATL1_REG_COUNT; i++) {
3431                 /*
3432                  * This switch statement avoids reserved regions
3433                  * of register space.
3434                  */
3435                 switch (i) {
3436                 case 6 ... 9:
3437                 case 14:
3438                 case 29 ... 31:
3439                 case 34 ... 63:
3440                 case 75 ... 127:
3441                 case 136 ... 1023:
3442                 case 1027 ... 1087:
3443                 case 1091 ... 1151:
3444                 case 1194 ... 1195:
3445                 case 1200 ... 1201:
3446                 case 1206 ... 1213:
3447                 case 1216 ... 1279:
3448                 case 1290 ... 1311:
3449                 case 1323 ... 1343:
3450                 case 1358 ... 1359:
3451                 case 1368 ... 1375:
3452                 case 1378 ... 1383:
3453                 case 1388 ... 1391:
3454                 case 1393 ... 1395:
3455                 case 1402 ... 1403:
3456                 case 1410 ... 1471:
3457                 case 1522 ... 1535:
3458                         /* reserved region; don't read it */
3459                         regbuf[i] = 0;
3460                         break;
3461                 default:
3462                         /* unreserved region */
3463                         regbuf[i] = ioread32(hw->hw_addr + (i * sizeof(u32)));
3464                 }
3465         }
3466 }
3467
3468 static void atl1_get_ringparam(struct net_device *netdev,
3469         struct ethtool_ringparam *ring)
3470 {
3471         struct atl1_adapter *adapter = netdev_priv(netdev);
3472         struct atl1_tpd_ring *txdr = &adapter->tpd_ring;
3473         struct atl1_rfd_ring *rxdr = &adapter->rfd_ring;
3474
3475         ring->rx_max_pending = ATL1_MAX_RFD;
3476         ring->tx_max_pending = ATL1_MAX_TPD;
3477         ring->rx_pending = rxdr->count;
3478         ring->tx_pending = txdr->count;
3479 }
3480
3481 static int atl1_set_ringparam(struct net_device *netdev,
3482         struct ethtool_ringparam *ring)
3483 {
3484         struct atl1_adapter *adapter = netdev_priv(netdev);
3485         struct atl1_tpd_ring *tpdr = &adapter->tpd_ring;
3486         struct atl1_rrd_ring *rrdr = &adapter->rrd_ring;
3487         struct atl1_rfd_ring *rfdr = &adapter->rfd_ring;
3488
3489         struct atl1_tpd_ring tpd_old, tpd_new;
3490         struct atl1_rfd_ring rfd_old, rfd_new;
3491         struct atl1_rrd_ring rrd_old, rrd_new;
3492         struct atl1_ring_header rhdr_old, rhdr_new;
3493         struct atl1_smb smb;
3494         struct atl1_cmb cmb;
3495         int err;
3496
3497         tpd_old = adapter->tpd_ring;
3498         rfd_old = adapter->rfd_ring;
3499         rrd_old = adapter->rrd_ring;
3500         rhdr_old = adapter->ring_header;
3501
3502         if (netif_running(adapter->netdev))
3503                 atl1_down(adapter);
3504
3505         rfdr->count = (u16) max(ring->rx_pending, (u32) ATL1_MIN_RFD);
3506         rfdr->count = rfdr->count > ATL1_MAX_RFD ? ATL1_MAX_RFD :
3507                         rfdr->count;
3508         rfdr->count = (rfdr->count + 3) & ~3;
3509         rrdr->count = rfdr->count;
3510
3511         tpdr->count = (u16) max(ring->tx_pending, (u32) ATL1_MIN_TPD);
3512         tpdr->count = tpdr->count > ATL1_MAX_TPD ? ATL1_MAX_TPD :
3513                         tpdr->count;
3514         tpdr->count = (tpdr->count + 3) & ~3;
3515
3516         if (netif_running(adapter->netdev)) {
3517                 /* try to get new resources before deleting old */
3518                 err = atl1_setup_ring_resources(adapter);
3519                 if (err)
3520                         goto err_setup_ring;
3521
3522                 /*
3523                  * save the new, restore the old in order to free it,
3524                  * then restore the new back again
3525                  */
3526
3527                 rfd_new = adapter->rfd_ring;
3528                 rrd_new = adapter->rrd_ring;
3529                 tpd_new = adapter->tpd_ring;
3530                 rhdr_new = adapter->ring_header;
3531                 adapter->rfd_ring = rfd_old;
3532                 adapter->rrd_ring = rrd_old;
3533                 adapter->tpd_ring = tpd_old;
3534                 adapter->ring_header = rhdr_old;
3535                 /*
3536                  * Save SMB and CMB, since atl1_free_ring_resources
3537                  * will clear them.
3538                  */
3539                 smb = adapter->smb;
3540                 cmb = adapter->cmb;
3541                 atl1_free_ring_resources(adapter);
3542                 adapter->rfd_ring = rfd_new;
3543                 adapter->rrd_ring = rrd_new;
3544                 adapter->tpd_ring = tpd_new;
3545                 adapter->ring_header = rhdr_new;
3546                 adapter->smb = smb;
3547                 adapter->cmb = cmb;
3548
3549                 err = atl1_up(adapter);
3550                 if (err)
3551                         return err;
3552         }
3553         return 0;
3554
3555 err_setup_ring:
3556         adapter->rfd_ring = rfd_old;
3557         adapter->rrd_ring = rrd_old;
3558         adapter->tpd_ring = tpd_old;
3559         adapter->ring_header = rhdr_old;
3560         atl1_up(adapter);
3561         return err;
3562 }
3563
3564 static void atl1_get_pauseparam(struct net_device *netdev,
3565         struct ethtool_pauseparam *epause)
3566 {
3567         struct atl1_adapter *adapter = netdev_priv(netdev);
3568         struct atl1_hw *hw = &adapter->hw;
3569
3570         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3571             hw->media_type == MEDIA_TYPE_1000M_FULL) {
3572                 epause->autoneg = AUTONEG_ENABLE;
3573         } else {
3574                 epause->autoneg = AUTONEG_DISABLE;
3575         }
3576         epause->rx_pause = 1;
3577         epause->tx_pause = 1;
3578 }
3579
3580 static int atl1_set_pauseparam(struct net_device *netdev,
3581         struct ethtool_pauseparam *epause)
3582 {
3583         struct atl1_adapter *adapter = netdev_priv(netdev);
3584         struct atl1_hw *hw = &adapter->hw;
3585
3586         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3587             hw->media_type == MEDIA_TYPE_1000M_FULL) {
3588                 epause->autoneg = AUTONEG_ENABLE;
3589         } else {
3590                 epause->autoneg = AUTONEG_DISABLE;
3591         }
3592
3593         epause->rx_pause = 1;
3594         epause->tx_pause = 1;
3595
3596         return 0;
3597 }
3598
3599 static void atl1_get_strings(struct net_device *netdev, u32 stringset,
3600         u8 *data)
3601 {
3602         u8 *p = data;
3603         int i;
3604
3605         switch (stringset) {
3606         case ETH_SS_STATS:
3607                 for (i = 0; i < ARRAY_SIZE(atl1_gstrings_stats); i++) {
3608                         memcpy(p, atl1_gstrings_stats[i].stat_string,
3609                                 ETH_GSTRING_LEN);
3610                         p += ETH_GSTRING_LEN;
3611                 }
3612                 break;
3613         }
3614 }
3615
3616 static int atl1_nway_reset(struct net_device *netdev)
3617 {
3618         struct atl1_adapter *adapter = netdev_priv(netdev);
3619         struct atl1_hw *hw = &adapter->hw;
3620
3621         if (netif_running(netdev)) {
3622                 u16 phy_data;
3623                 atl1_down(adapter);
3624
3625                 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3626                         hw->media_type == MEDIA_TYPE_1000M_FULL) {
3627                         phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN;
3628                 } else {
3629                         switch (hw->media_type) {
3630                         case MEDIA_TYPE_100M_FULL:
3631                                 phy_data = MII_CR_FULL_DUPLEX |
3632                                         MII_CR_SPEED_100 | MII_CR_RESET;
3633                                 break;
3634                         case MEDIA_TYPE_100M_HALF:
3635                                 phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
3636                                 break;
3637                         case MEDIA_TYPE_10M_FULL:
3638                                 phy_data = MII_CR_FULL_DUPLEX |
3639                                         MII_CR_SPEED_10 | MII_CR_RESET;
3640                                 break;
3641                         default:
3642                                 /* MEDIA_TYPE_10M_HALF */
3643                                 phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
3644                         }
3645                 }
3646                 atl1_write_phy_reg(hw, MII_BMCR, phy_data);
3647                 atl1_up(adapter);
3648         }
3649         return 0;
3650 }
3651
3652 static const struct ethtool_ops atl1_ethtool_ops = {
3653         .get_settings           = atl1_get_settings,
3654         .set_settings           = atl1_set_settings,
3655         .get_drvinfo            = atl1_get_drvinfo,
3656         .get_wol                = atl1_get_wol,
3657         .set_wol                = atl1_set_wol,
3658         .get_msglevel           = atl1_get_msglevel,
3659         .set_msglevel           = atl1_set_msglevel,
3660         .get_regs_len           = atl1_get_regs_len,
3661         .get_regs               = atl1_get_regs,
3662         .get_ringparam          = atl1_get_ringparam,
3663         .set_ringparam          = atl1_set_ringparam,
3664         .get_pauseparam         = atl1_get_pauseparam,
3665         .set_pauseparam         = atl1_set_pauseparam,
3666         .get_link               = ethtool_op_get_link,
3667         .get_strings            = atl1_get_strings,
3668         .nway_reset             = atl1_nway_reset,
3669         .get_ethtool_stats      = atl1_get_ethtool_stats,
3670         .get_sset_count         = atl1_get_sset_count,
3671 };