drivers/net/atlx/atl1.c

   1 /*
   2  * Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved.
   3  * Copyright(c) 2006 - 2007 Chris Snook <csnook@redhat.com>
   4  * Copyright(c) 2006 - 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 <asm/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 /* Temporary hack for merging atl1 and atl2 */
  86 #include "atlx.c"
  87
  88 /*
  89  * This is the only thing that needs to be changed to adjust the
  90  * maximum number of ports that the driver can manage.
  91  */
  92 #define ATL1_MAX_NIC 4
  93
  94 #define OPTION_UNSET    -1
  95 #define OPTION_DISABLED 0
  96 #define OPTION_ENABLED  1
  97
  98 #define ATL1_PARAM_INIT { [0 ... ATL1_MAX_NIC] = OPTION_UNSET }
  99
 100 /*
 101  * Interrupt Moderate Timer in units of 2 us
 102  *
 103  * Valid Range: 10-65535
 104  *
 105  * Default Value: 100 (200us)
 106  */
 107 static int __devinitdata int_mod_timer[ATL1_MAX_NIC+1] = ATL1_PARAM_INIT;
 108 static unsigned int num_int_mod_timer;
 109 module_param_array_named(int_mod_timer, int_mod_timer, int,
 110         &num_int_mod_timer, 0);
 111 MODULE_PARM_DESC(int_mod_timer, "Interrupt moderator timer");
 112
 113 #define DEFAULT_INT_MOD_CNT     100     /* 200us */
 114 #define MAX_INT_MOD_CNT         65000
 115 #define MIN_INT_MOD_CNT         50
 116
 117 struct atl1_option {
 118         enum { enable_option, range_option, list_option } type;
 119         char *name;
 120         char *err;
 121         int def;
 122         union {
 123                 struct {        /* range_option info */
 124                         int min;
 125                         int max;
 126                 } r;
 127                 struct {        /* list_option info */
 128                         int nr;
 129                         struct atl1_opt_list {
 130                                 int i;
 131                                 char *str;
 132                         } *p;
 133                 } l;
 134         } arg;
 135 };
 136
 137 static int __devinit atl1_validate_option(int *value, struct atl1_option *opt,
 138         struct pci_dev *pdev)
 139 {
 140         if (*value == OPTION_UNSET) {
 141                 *value = opt->def;
 142                 return 0;
 143         }
 144
 145         switch (opt->type) {
 146         case enable_option:
 147                 switch (*value) {
 148                 case OPTION_ENABLED:
 149                         dev_info(&pdev->dev, "%s enabled\n", opt->name);
 150                         return 0;
 151                 case OPTION_DISABLED:
 152                         dev_info(&pdev->dev, "%s disabled\n", opt->name);
 153                         return 0;
 154                 }
 155                 break;
 156         case range_option:
 157                 if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
 158                         dev_info(&pdev->dev, "%s set to %i\n", opt->name,
 159                                 *value);
 160                         return 0;
 161                 }
 162                 break;
 163         case list_option:{
 164                         int i;
 165                         struct atl1_opt_list *ent;
 166
 167                         for (i = 0; i < opt->arg.l.nr; i++) {
 168                                 ent = &opt->arg.l.p[i];
 169                                 if (*value == ent->i) {
 170                                         if (ent->str[0] != '\0')
 171                                                 dev_info(&pdev->dev, "%s\n",
 172                                                         ent->str);
 173                                         return 0;
 174                                 }
 175                         }
 176                 }
 177                 break;
 178
 179         default:
 180                 break;
 181         }
 182
 183         dev_info(&pdev->dev, "invalid %s specified (%i) %s\n",
 184                 opt->name, *value, opt->err);
 185         *value = opt->def;
 186         return -1;
 187 }
 188
 189 /*
 190  * atl1_check_options - Range Checking for Command Line Parameters
 191  * @adapter: board private structure
 192  *
 193  * This routine checks all command line parameters for valid user
 194  * input.  If an invalid value is given, or if no user specified
 195  * value exists, a default value is used.  The final value is stored
 196  * in a variable in the adapter structure.
 197  */
 198 static void __devinit atl1_check_options(struct atl1_adapter *adapter)
 199 {
 200         struct pci_dev *pdev = adapter->pdev;
 201         int bd = adapter->bd_number;
 202         if (bd >= ATL1_MAX_NIC) {
 203                 dev_notice(&pdev->dev, "no configuration for board#%i\n", bd);
 204                 dev_notice(&pdev->dev, "using defaults for all values\n");
 205         }
 206         {                       /* Interrupt Moderate Timer */
 207                 struct atl1_option opt = {
 208                         .type = range_option,
 209                         .name = "Interrupt Moderator Timer",
 210                         .err = "using default of "
 211                                 __MODULE_STRING(DEFAULT_INT_MOD_CNT),
 212                         .def = DEFAULT_INT_MOD_CNT,
 213                         .arg = {.r = {.min = MIN_INT_MOD_CNT,
 214                                         .max = MAX_INT_MOD_CNT} }
 215                 };
 216                 int val;
 217                 if (num_int_mod_timer > bd) {
 218                         val = int_mod_timer[bd];
 219                         atl1_validate_option(&val, &opt, pdev);
 220                         adapter->imt = (u16) val;
 221                 } else
 222                         adapter->imt = (u16) (opt.def);
 223         }
 224 }
 225
 226 /*
 227  * atl1_pci_tbl - PCI Device ID Table
 228  */
 229 static const struct pci_device_id atl1_pci_tbl[] = {
 230         {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1)},
 231         /* required last entry */
 232         {0,}
 233 };
 234 MODULE_DEVICE_TABLE(pci, atl1_pci_tbl);
 235
 236 static const u32 atl1_default_msg = NETIF_MSG_DRV | NETIF_MSG_PROBE |
 237         NETIF_MSG_LINK | NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP;
 238
 239 static int debug = -1;
 240 module_param(debug, int, 0);
 241 MODULE_PARM_DESC(debug, "Message level (0=none,...,16=all)");
 242
 243 /*
 244  * Reset the transmit and receive units; mask and clear all interrupts.
 245  * hw - Struct containing variables accessed by shared code
 246  * return : 0  or  idle status (if error)
 247  */
 248 static s32 atl1_reset_hw(struct atl1_hw *hw)
 249 {
 250         struct pci_dev *pdev = hw->back->pdev;
 251         struct atl1_adapter *adapter = hw->back;
 252         u32 icr;
 253         int i;
 254
 255         /*
 256          * Clear Interrupt mask to stop board from generating
 257          * interrupts & Clear any pending interrupt events
 258          */
 259         /*
 260          * iowrite32(0, hw->hw_addr + REG_IMR);
 261          * iowrite32(0xffffffff, hw->hw_addr + REG_ISR);
 262          */
 263
 264         /*
 265          * Issue Soft Reset to the MAC.  This will reset the chip's
 266          * transmit, receive, DMA.  It will not effect
 267          * the current PCI configuration.  The global reset bit is self-
 268          * clearing, and should clear within a microsecond.
 269          */
 270         iowrite32(MASTER_CTRL_SOFT_RST, hw->hw_addr + REG_MASTER_CTRL);
 271         ioread32(hw->hw_addr + REG_MASTER_CTRL);
 272
 273         iowrite16(1, hw->hw_addr + REG_PHY_ENABLE);
 274         ioread16(hw->hw_addr + REG_PHY_ENABLE);
 275
 276         /* delay about 1ms */
 277         msleep(1);
 278
 279         /* Wait at least 10ms for All module to be Idle */
 280         for (i = 0; i < 10; i++) {
 281                 icr = ioread32(hw->hw_addr + REG_IDLE_STATUS);
 282                 if (!icr)
 283                         break;
 284                 /* delay 1 ms */
 285                 msleep(1);
 286                 /* FIXME: still the right way to do this? */
 287                 cpu_relax();
 288         }
 289
 290         if (icr) {
 291                 if (netif_msg_hw(adapter))
 292                         dev_dbg(&pdev->dev, "ICR = 0x%x\n", icr);
 293                 return icr;
 294         }
 295
 296         return 0;
 297 }
 298
 299 /* function about EEPROM
 300  *
 301  * check_eeprom_exist
 302  * return 0 if eeprom exist
 303  */
 304 static int atl1_check_eeprom_exist(struct atl1_hw *hw)
 305 {
 306         u32 value;
 307         value = ioread32(hw->hw_addr + REG_SPI_FLASH_CTRL);
 308         if (value & SPI_FLASH_CTRL_EN_VPD) {
 309                 value &= ~SPI_FLASH_CTRL_EN_VPD;
 310                 iowrite32(value, hw->hw_addr + REG_SPI_FLASH_CTRL);
 311         }
 312
 313         value = ioread16(hw->hw_addr + REG_PCIE_CAP_LIST);
 314         return ((value & 0xFF00) == 0x6C00) ? 0 : 1;
 315 }
 316
 317 static bool atl1_read_eeprom(struct atl1_hw *hw, u32 offset, u32 *p_value)
 318 {
 319         int i;
 320         u32 control;
 321
 322         if (offset & 3)
 323                 /* address do not align */
 324                 return false;
 325
 326         iowrite32(0, hw->hw_addr + REG_VPD_DATA);
 327         control = (offset & VPD_CAP_VPD_ADDR_MASK) << VPD_CAP_VPD_ADDR_SHIFT;
 328         iowrite32(control, hw->hw_addr + REG_VPD_CAP);
 329         ioread32(hw->hw_addr + REG_VPD_CAP);
 330
 331         for (i = 0; i < 10; i++) {
 332                 msleep(2);
 333                 control = ioread32(hw->hw_addr + REG_VPD_CAP);
 334                 if (control & VPD_CAP_VPD_FLAG)
 335                         break;
 336         }
 337         if (control & VPD_CAP_VPD_FLAG) {
 338                 *p_value = ioread32(hw->hw_addr + REG_VPD_DATA);
 339                 return true;
 340         }
 341         /* timeout */
 342         return false;
 343 }
 344
 345 /*
 346  * Reads the value from a PHY register
 347  * hw - Struct containing variables accessed by shared code
 348  * reg_addr - address of the PHY register to read
 349  */
 350 s32 atl1_read_phy_reg(struct atl1_hw *hw, u16 reg_addr, u16 *phy_data)
 351 {
 352         u32 val;
 353         int i;
 354
 355         val = ((u32) (reg_addr & MDIO_REG_ADDR_MASK)) << MDIO_REG_ADDR_SHIFT |
 356                 MDIO_START | MDIO_SUP_PREAMBLE | MDIO_RW | MDIO_CLK_25_4 <<
 357                 MDIO_CLK_SEL_SHIFT;
 358         iowrite32(val, hw->hw_addr + REG_MDIO_CTRL);
 359         ioread32(hw->hw_addr + REG_MDIO_CTRL);
 360
 361         for (i = 0; i < MDIO_WAIT_TIMES; i++) {
 362                 udelay(2);
 363                 val = ioread32(hw->hw_addr + REG_MDIO_CTRL);
 364                 if (!(val & (MDIO_START | MDIO_BUSY)))
 365                         break;
 366         }
 367         if (!(val & (MDIO_START | MDIO_BUSY))) {
 368                 *phy_data = (u16) val;
 369                 return 0;
 370         }
 371         return ATLX_ERR_PHY;
 372 }
 373
 374 #define CUSTOM_SPI_CS_SETUP     2
 375 #define CUSTOM_SPI_CLK_HI       2
 376 #define CUSTOM_SPI_CLK_LO       2
 377 #define CUSTOM_SPI_CS_HOLD      2
 378 #define CUSTOM_SPI_CS_HI        3
 379
 380 static bool atl1_spi_read(struct atl1_hw *hw, u32 addr, u32 *buf)
 381 {
 382         int i;
 383         u32 value;
 384
 385         iowrite32(0, hw->hw_addr + REG_SPI_DATA);
 386         iowrite32(addr, hw->hw_addr + REG_SPI_ADDR);
 387
 388         value = SPI_FLASH_CTRL_WAIT_READY |
 389             (CUSTOM_SPI_CS_SETUP & SPI_FLASH_CTRL_CS_SETUP_MASK) <<
 390             SPI_FLASH_CTRL_CS_SETUP_SHIFT | (CUSTOM_SPI_CLK_HI &
 391                                              SPI_FLASH_CTRL_CLK_HI_MASK) <<
 392             SPI_FLASH_CTRL_CLK_HI_SHIFT | (CUSTOM_SPI_CLK_LO &
 393                                            SPI_FLASH_CTRL_CLK_LO_MASK) <<
 394             SPI_FLASH_CTRL_CLK_LO_SHIFT | (CUSTOM_SPI_CS_HOLD &
 395                                            SPI_FLASH_CTRL_CS_HOLD_MASK) <<
 396             SPI_FLASH_CTRL_CS_HOLD_SHIFT | (CUSTOM_SPI_CS_HI &
 397                                             SPI_FLASH_CTRL_CS_HI_MASK) <<
 398             SPI_FLASH_CTRL_CS_HI_SHIFT | (1 & SPI_FLASH_CTRL_INS_MASK) <<
 399             SPI_FLASH_CTRL_INS_SHIFT;
 400
 401         iowrite32(value, hw->hw_addr + REG_SPI_FLASH_CTRL);
 402
 403         value |= SPI_FLASH_CTRL_START;
 404         iowrite32(value, hw->hw_addr + REG_SPI_FLASH_CTRL);
 405         ioread32(hw->hw_addr + REG_SPI_FLASH_CTRL);
 406
 407         for (i = 0; i < 10; i++) {
 408                 msleep(1);
 409                 value = ioread32(hw->hw_addr + REG_SPI_FLASH_CTRL);
 410                 if (!(value & SPI_FLASH_CTRL_START))
 411                         break;
 412         }
 413
 414         if (value & SPI_FLASH_CTRL_START)
 415                 return false;
 416
 417         *buf = ioread32(hw->hw_addr + REG_SPI_DATA);
 418
 419         return true;
 420 }
 421
 422 /*
 423  * get_permanent_address
 424  * return 0 if get valid mac address,
 425  */
 426 static int atl1_get_permanent_address(struct atl1_hw *hw)
 427 {
 428         u32 addr[2];
 429         u32 i, control;
 430         u16 reg;
 431         u8 eth_addr[ETH_ALEN];
 432         bool key_valid;
 433
 434         if (is_valid_ether_addr(hw->perm_mac_addr))
 435                 return 0;
 436
 437         /* init */
 438         addr[0] = addr[1] = 0;
 439
 440         if (!atl1_check_eeprom_exist(hw)) {
 441                 reg = 0;
 442                 key_valid = false;
 443                 /* Read out all EEPROM content */
 444                 i = 0;
 445                 while (1) {
 446                         if (atl1_read_eeprom(hw, i + 0x100, &control)) {
 447                                 if (key_valid) {
 448                                         if (reg == REG_MAC_STA_ADDR)
 449                                                 addr[0] = control;
 450                                         else if (reg == (REG_MAC_STA_ADDR + 4))
 451                                                 addr[1] = control;
 452                                         key_valid = false;
 453                                 } else if ((control & 0xff) == 0x5A) {
 454                                         key_valid = true;
 455                                         reg = (u16) (control >> 16);
 456                                 } else
 457                                         break;
 458                         } else
 459                                 /* read error */
 460                                 break;
 461                         i += 4;
 462                 }
 463
 464                 *(u32 *) &eth_addr[2] = swab32(addr[0]);
 465                 *(u16 *) &eth_addr[0] = swab16(*(u16 *) &addr[1]);
 466                 if (is_valid_ether_addr(eth_addr)) {
 467                         memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN);
 468                         return 0;
 469                 }
 470         }
 471
 472         /* see if SPI FLAGS exist ? */
 473         addr[0] = addr[1] = 0;
 474         reg = 0;
 475         key_valid = false;
 476         i = 0;
 477         while (1) {
 478                 if (atl1_spi_read(hw, i + 0x1f000, &control)) {
 479                         if (key_valid) {
 480                                 if (reg == REG_MAC_STA_ADDR)
 481                                         addr[0] = control;
 482                                 else if (reg == (REG_MAC_STA_ADDR + 4))
 483                                         addr[1] = control;
 484                                 key_valid = false;
 485                         } else if ((control & 0xff) == 0x5A) {
 486                                 key_valid = true;
 487                                 reg = (u16) (control >> 16);
 488                         } else
 489                                 /* data end */
 490                                 break;
 491                 } else
 492                         /* read error */
 493                         break;
 494                 i += 4;
 495         }
 496
 497         *(u32 *) &eth_addr[2] = swab32(addr[0]);
 498         *(u16 *) &eth_addr[0] = swab16(*(u16 *) &addr[1]);
 499         if (is_valid_ether_addr(eth_addr)) {
 500                 memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN);
 501                 return 0;
 502         }
 503
 504         /*
 505          * On some motherboards, the MAC address is written by the
 506          * BIOS directly to the MAC register during POST, and is
 507          * not stored in eeprom.  If all else thus far has failed
 508          * to fetch the permanent MAC address, try reading it directly.
 509          */
 510         addr[0] = ioread32(hw->hw_addr + REG_MAC_STA_ADDR);
 511         addr[1] = ioread16(hw->hw_addr + (REG_MAC_STA_ADDR + 4));
 512         *(u32 *) &eth_addr[2] = swab32(addr[0]);
 513         *(u16 *) &eth_addr[0] = swab16(*(u16 *) &addr[1]);
 514         if (is_valid_ether_addr(eth_addr)) {
 515                 memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN);
 516                 return 0;
 517         }
 518
 519         return 1;
 520 }
 521
 522 /*
 523  * Reads the adapter's MAC address from the EEPROM
 524  * hw - Struct containing variables accessed by shared code
 525  */
 526 static s32 atl1_read_mac_addr(struct atl1_hw *hw)
 527 {
 528         u16 i;
 529
 530         if (atl1_get_permanent_address(hw))
 531                 random_ether_addr(hw->perm_mac_addr);
 532
 533         for (i = 0; i < ETH_ALEN; i++)
 534                 hw->mac_addr[i] = hw->perm_mac_addr[i];
 535         return 0;
 536 }
 537
 538 /*
 539  * Hashes an address to determine its location in the multicast table
 540  * hw - Struct containing variables accessed by shared code
 541  * mc_addr - the multicast address to hash
 542  *
 543  * atl1_hash_mc_addr
 544  *  purpose
 545  *      set hash value for a multicast address
 546  *      hash calcu processing :
 547  *          1. calcu 32bit CRC for multicast address
 548  *          2. reverse crc with MSB to LSB
 549  */
 550 u32 atl1_hash_mc_addr(struct atl1_hw *hw, u8 *mc_addr)
 551 {
 552         u32 crc32, value = 0;
 553         int i;
 554
 555         crc32 = ether_crc_le(6, mc_addr);
 556         for (i = 0; i < 32; i++)
 557                 value |= (((crc32 >> i) & 1) << (31 - i));
 558
 559         return value;
 560 }
 561
 562 /*
 563  * Sets the bit in the multicast table corresponding to the hash value.
 564  * hw - Struct containing variables accessed by shared code
 565  * hash_value - Multicast address hash value
 566  */
 567 void atl1_hash_set(struct atl1_hw *hw, u32 hash_value)
 568 {
 569         u32 hash_bit, hash_reg;
 570         u32 mta;
 571
 572         /*
 573          * The HASH Table  is a register array of 2 32-bit registers.
 574          * It is treated like an array of 64 bits.  We want to set
 575          * bit BitArray[hash_value]. So we figure out what register
 576          * the bit is in, read it, OR in the new bit, then write
 577          * back the new value.  The register is determined by the
 578          * upper 7 bits of the hash value and the bit within that
 579          * register are determined by the lower 5 bits of the value.
 580          */
 581         hash_reg = (hash_value >> 31) & 0x1;
 582         hash_bit = (hash_value >> 26) & 0x1F;
 583         mta = ioread32((hw->hw_addr + REG_RX_HASH_TABLE) + (hash_reg << 2));
 584         mta |= (1 << hash_bit);
 585         iowrite32(mta, (hw->hw_addr + REG_RX_HASH_TABLE) + (hash_reg << 2));
 586 }
 587
 588 /*
 589  * Writes a value to a PHY register
 590  * hw - Struct containing variables accessed by shared code
 591  * reg_addr - address of the PHY register to write
 592  * data - data to write to the PHY
 593  */
 594 static s32 atl1_write_phy_reg(struct atl1_hw *hw, u32 reg_addr, u16 phy_data)
 595 {
 596         int i;
 597         u32 val;
 598
 599         val = ((u32) (phy_data & MDIO_DATA_MASK)) << MDIO_DATA_SHIFT |
 600             (reg_addr & MDIO_REG_ADDR_MASK) << MDIO_REG_ADDR_SHIFT |
 601             MDIO_SUP_PREAMBLE |
 602             MDIO_START | MDIO_CLK_25_4 << MDIO_CLK_SEL_SHIFT;
 603         iowrite32(val, hw->hw_addr + REG_MDIO_CTRL);
 604         ioread32(hw->hw_addr + REG_MDIO_CTRL);
 605
 606         for (i = 0; i < MDIO_WAIT_TIMES; i++) {
 607                 udelay(2);
 608                 val = ioread32(hw->hw_addr + REG_MDIO_CTRL);
 609                 if (!(val & (MDIO_START | MDIO_BUSY)))
 610                         break;
 611         }
 612
 613         if (!(val & (MDIO_START | MDIO_BUSY)))
 614                 return 0;
 615
 616         return ATLX_ERR_PHY;
 617 }
 618
 619 /*
 620  * Make L001's PHY out of Power Saving State (bug)
 621  * hw - Struct containing variables accessed by shared code
 622  * when power on, L001's PHY always on Power saving State
 623  * (Gigabit Link forbidden)
 624  */
 625 static s32 atl1_phy_leave_power_saving(struct atl1_hw *hw)
 626 {
 627         s32 ret;
 628         ret = atl1_write_phy_reg(hw, 29, 0x0029);
 629         if (ret)
 630                 return ret;
 631         return atl1_write_phy_reg(hw, 30, 0);
 632 }
 633
 634 /*
 635  * Resets the PHY and make all config validate
 636  * hw - Struct containing variables accessed by shared code
 637  *
 638  * Sets bit 15 and 12 of the MII Control regiser (for F001 bug)
 639  */
 640 static s32 atl1_phy_reset(struct atl1_hw *hw)
 641 {
 642         struct pci_dev *pdev = hw->back->pdev;
 643         struct atl1_adapter *adapter = hw->back;
 644         s32 ret_val;
 645         u16 phy_data;
 646
 647         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
 648             hw->media_type == MEDIA_TYPE_1000M_FULL)
 649                 phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN;
 650         else {
 651                 switch (hw->media_type) {
 652                 case MEDIA_TYPE_100M_FULL:
 653                         phy_data =
 654                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
 655                             MII_CR_RESET;
 656                         break;
 657                 case MEDIA_TYPE_100M_HALF:
 658                         phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
 659                         break;
 660                 case MEDIA_TYPE_10M_FULL:
 661                         phy_data =
 662                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
 663                         break;
 664                 default:
 665                         /* MEDIA_TYPE_10M_HALF: */
 666                         phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
 667                         break;
 668                 }
 669         }
 670
 671         ret_val = atl1_write_phy_reg(hw, MII_BMCR, phy_data);
 672         if (ret_val) {
 673                 u32 val;
 674                 int i;
 675                 /* pcie serdes link may be down! */
 676                 if (netif_msg_hw(adapter))
 677                         dev_dbg(&pdev->dev, "pcie phy link down\n");
 678
 679                 for (i = 0; i < 25; i++) {
 680                         msleep(1);
 681                         val = ioread32(hw->hw_addr + REG_MDIO_CTRL);
 682                         if (!(val & (MDIO_START | MDIO_BUSY)))
 683                                 break;
 684                 }
 685
 686                 if ((val & (MDIO_START | MDIO_BUSY)) != 0) {
 687                         if (netif_msg_hw(adapter))
 688                                 dev_warn(&pdev->dev,
 689                                         "pcie link down at least 25ms\n");
 690                         return ret_val;
 691                 }
 692         }
 693         return 0;
 694 }
 695
 696 /*
 697  * Configures PHY autoneg and flow control advertisement settings
 698  * hw - Struct containing variables accessed by shared code
 699  */
 700 static s32 atl1_phy_setup_autoneg_adv(struct atl1_hw *hw)
 701 {
 702         s32 ret_val;
 703         s16 mii_autoneg_adv_reg;
 704         s16 mii_1000t_ctrl_reg;
 705
 706         /* Read the MII Auto-Neg Advertisement Register (Address 4). */
 707         mii_autoneg_adv_reg = MII_AR_DEFAULT_CAP_MASK;
 708
 709         /* Read the MII 1000Base-T Control Register (Address 9). */
 710         mii_1000t_ctrl_reg = MII_ATLX_CR_1000T_DEFAULT_CAP_MASK;
 711
 712         /*
 713          * First we clear all the 10/100 mb speed bits in the Auto-Neg
 714          * Advertisement Register (Address 4) and the 1000 mb speed bits in
 715          * the  1000Base-T Control Register (Address 9).
 716          */
 717         mii_autoneg_adv_reg &= ~MII_AR_SPEED_MASK;
 718         mii_1000t_ctrl_reg &= ~MII_ATLX_CR_1000T_SPEED_MASK;
 719
 720         /*
 721          * Need to parse media_type  and set up
 722          * the appropriate PHY registers.
 723          */
 724         switch (hw->media_type) {
 725         case MEDIA_TYPE_AUTO_SENSOR:
 726                 mii_autoneg_adv_reg |= (MII_AR_10T_HD_CAPS |
 727                                         MII_AR_10T_FD_CAPS |
 728                                         MII_AR_100TX_HD_CAPS |
 729                                         MII_AR_100TX_FD_CAPS);
 730                 mii_1000t_ctrl_reg |= MII_ATLX_CR_1000T_FD_CAPS;
 731                 break;
 732
 733         case MEDIA_TYPE_1000M_FULL:
 734                 mii_1000t_ctrl_reg |= MII_ATLX_CR_1000T_FD_CAPS;
 735                 break;
 736
 737         case MEDIA_TYPE_100M_FULL:
 738                 mii_autoneg_adv_reg |= MII_AR_100TX_FD_CAPS;
 739                 break;
 740
 741         case MEDIA_TYPE_100M_HALF:
 742                 mii_autoneg_adv_reg |= MII_AR_100TX_HD_CAPS;
 743                 break;
 744
 745         case MEDIA_TYPE_10M_FULL:
 746                 mii_autoneg_adv_reg |= MII_AR_10T_FD_CAPS;
 747                 break;
 748
 749         default:
 750                 mii_autoneg_adv_reg |= MII_AR_10T_HD_CAPS;
 751                 break;
 752         }
 753
 754         /* flow control fixed to enable all */
 755         mii_autoneg_adv_reg |= (MII_AR_ASM_DIR | MII_AR_PAUSE);
 756
 757         hw->mii_autoneg_adv_reg = mii_autoneg_adv_reg;
 758         hw->mii_1000t_ctrl_reg = mii_1000t_ctrl_reg;
 759
 760         ret_val = atl1_write_phy_reg(hw, MII_ADVERTISE, mii_autoneg_adv_reg);
 761         if (ret_val)
 762                 return ret_val;
 763
 764         ret_val = atl1_write_phy_reg(hw, MII_ATLX_CR, mii_1000t_ctrl_reg);
 765         if (ret_val)
 766                 return ret_val;
 767
 768         return 0;
 769 }
 770
 771 /*
 772  * Configures link settings.
 773  * hw - Struct containing variables accessed by shared code
 774  * Assumes the hardware has previously been reset and the
 775  * transmitter and receiver are not enabled.
 776  */
 777 static s32 atl1_setup_link(struct atl1_hw *hw)
 778 {
 779         struct pci_dev *pdev = hw->back->pdev;
 780         struct atl1_adapter *adapter = hw->back;
 781         s32 ret_val;
 782
 783         /*
 784          * Options:
 785          *  PHY will advertise value(s) parsed from
 786          *  autoneg_advertised and fc
 787          *  no matter what autoneg is , We will not wait link result.
 788          */
 789         ret_val = atl1_phy_setup_autoneg_adv(hw);
 790         if (ret_val) {
 791                 if (netif_msg_link(adapter))
 792                         dev_dbg(&pdev->dev,
 793                                 "error setting up autonegotiation\n");
 794                 return ret_val;
 795         }
 796         /* SW.Reset , En-Auto-Neg if needed */
 797         ret_val = atl1_phy_reset(hw);
 798         if (ret_val) {
 799                 if (netif_msg_link(adapter))
 800                         dev_dbg(&pdev->dev, "error resetting phy\n");
 801                 return ret_val;
 802         }
 803         hw->phy_configured = true;
 804         return ret_val;
 805 }
 806
 807 static void atl1_init_flash_opcode(struct atl1_hw *hw)
 808 {
 809         if (hw->flash_vendor >= ARRAY_SIZE(flash_table))
 810                 /* Atmel */
 811                 hw->flash_vendor = 0;
 812
 813         /* Init OP table */
 814         iowrite8(flash_table[hw->flash_vendor].cmd_program,
 815                 hw->hw_addr + REG_SPI_FLASH_OP_PROGRAM);
 816         iowrite8(flash_table[hw->flash_vendor].cmd_sector_erase,
 817                 hw->hw_addr + REG_SPI_FLASH_OP_SC_ERASE);
 818         iowrite8(flash_table[hw->flash_vendor].cmd_chip_erase,
 819                 hw->hw_addr + REG_SPI_FLASH_OP_CHIP_ERASE);
 820         iowrite8(flash_table[hw->flash_vendor].cmd_rdid,
 821                 hw->hw_addr + REG_SPI_FLASH_OP_RDID);
 822         iowrite8(flash_table[hw->flash_vendor].cmd_wren,
 823                 hw->hw_addr + REG_SPI_FLASH_OP_WREN);
 824         iowrite8(flash_table[hw->flash_vendor].cmd_rdsr,
 825                 hw->hw_addr + REG_SPI_FLASH_OP_RDSR);
 826         iowrite8(flash_table[hw->flash_vendor].cmd_wrsr,
 827                 hw->hw_addr + REG_SPI_FLASH_OP_WRSR);
 828         iowrite8(flash_table[hw->flash_vendor].cmd_read,
 829                 hw->hw_addr + REG_SPI_FLASH_OP_READ);
 830 }
 831
 832 /*
 833  * Performs basic configuration of the adapter.
 834  * hw - Struct containing variables accessed by shared code
 835  * Assumes that the controller has previously been reset and is in a
 836  * post-reset uninitialized state. Initializes multicast table,
 837  * and  Calls routines to setup link
 838  * Leaves the transmit and receive units disabled and uninitialized.
 839  */
 840 static s32 atl1_init_hw(struct atl1_hw *hw)
 841 {
 842         u32 ret_val = 0;
 843
 844         /* Zero out the Multicast HASH table */
 845         iowrite32(0, hw->hw_addr + REG_RX_HASH_TABLE);
 846         /* clear the old settings from the multicast hash table */
 847         iowrite32(0, (hw->hw_addr + REG_RX_HASH_TABLE) + (1 << 2));
 848
 849         atl1_init_flash_opcode(hw);
 850
 851         if (!hw->phy_configured) {
 852                 /* enable GPHY LinkChange Interrrupt */
 853                 ret_val = atl1_write_phy_reg(hw, 18, 0xC00);
 854                 if (ret_val)
 855                         return ret_val;
 856                 /* make PHY out of power-saving state */
 857                 ret_val = atl1_phy_leave_power_saving(hw);
 858                 if (ret_val)
 859                         return ret_val;
 860                 /* Call a subroutine to configure the link */
 861                 ret_val = atl1_setup_link(hw);
 862         }
 863         return ret_val;
 864 }
 865
 866 /*
 867  * Detects the current speed and duplex settings of the hardware.
 868  * hw - Struct containing variables accessed by shared code
 869  * speed - Speed of the connection
 870  * duplex - Duplex setting of the connection
 871  */
 872 static s32 atl1_get_speed_and_duplex(struct atl1_hw *hw, u16 *speed, u16 *duplex)
 873 {
 874         struct pci_dev *pdev = hw->back->pdev;
 875         struct atl1_adapter *adapter = hw->back;
 876         s32 ret_val;
 877         u16 phy_data;
 878
 879         /* ; --- Read   PHY Specific Status Register (17) */
 880         ret_val = atl1_read_phy_reg(hw, MII_ATLX_PSSR, &phy_data);
 881         if (ret_val)
 882                 return ret_val;
 883
 884         if (!(phy_data & MII_ATLX_PSSR_SPD_DPLX_RESOLVED))
 885                 return ATLX_ERR_PHY_RES;
 886
 887         switch (phy_data & MII_ATLX_PSSR_SPEED) {
 888         case MII_ATLX_PSSR_1000MBS:
 889                 *speed = SPEED_1000;
 890                 break;
 891         case MII_ATLX_PSSR_100MBS:
 892                 *speed = SPEED_100;
 893                 break;
 894         case MII_ATLX_PSSR_10MBS:
 895                 *speed = SPEED_10;
 896                 break;
 897         default:
 898                 if (netif_msg_hw(adapter))
 899                         dev_dbg(&pdev->dev, "error getting speed\n");
 900                 return ATLX_ERR_PHY_SPEED;
 901                 break;
 902         }
 903         if (phy_data & MII_ATLX_PSSR_DPLX)
 904                 *duplex = FULL_DUPLEX;
 905         else
 906                 *duplex = HALF_DUPLEX;
 907
 908         return 0;
 909 }
 910
 911 void atl1_set_mac_addr(struct atl1_hw *hw)
 912 {
 913         u32 value;
 914         /*
 915          * 00-0B-6A-F6-00-DC
 916          * 0:  6AF600DC   1: 000B
 917          * low dword
 918          */
 919         value = (((u32) hw->mac_addr[2]) << 24) |
 920             (((u32) hw->mac_addr[3]) << 16) |
 921             (((u32) hw->mac_addr[4]) << 8) | (((u32) hw->mac_addr[5]));
 922         iowrite32(value, hw->hw_addr + REG_MAC_STA_ADDR);
 923         /* high dword */
 924         value = (((u32) hw->mac_addr[0]) << 8) | (((u32) hw->mac_addr[1]));
 925         iowrite32(value, (hw->hw_addr + REG_MAC_STA_ADDR) + (1 << 2));
 926 }
 927
 928 /*
 929  * atl1_sw_init - Initialize general software structures (struct atl1_adapter)
 930  * @adapter: board private structure to initialize
 931  *
 932  * atl1_sw_init initializes the Adapter private data structure.
 933  * Fields are initialized based on PCI device information and
 934  * OS network device settings (MTU size).
 935  */
 936 static int __devinit atl1_sw_init(struct atl1_adapter *adapter)
 937 {
 938         struct atl1_hw *hw = &adapter->hw;
 939         struct net_device *netdev = adapter->netdev;
 940
 941         hw->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
 942         hw->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
 943
 944         adapter->wol = 0;
 945         adapter->rx_buffer_len = (hw->max_frame_size + 7) & ~7;
 946         adapter->ict = 50000;           /* 100ms */
 947         adapter->link_speed = SPEED_0;  /* hardware init */
 948         adapter->link_duplex = FULL_DUPLEX;
 949
 950         hw->phy_configured = false;
 951         hw->preamble_len = 7;
 952         hw->ipgt = 0x60;
 953         hw->min_ifg = 0x50;
 954         hw->ipgr1 = 0x40;
 955         hw->ipgr2 = 0x60;
 956         hw->max_retry = 0xf;
 957         hw->lcol = 0x37;
 958         hw->jam_ipg = 7;
 959         hw->rfd_burst = 8;
 960         hw->rrd_burst = 8;
 961         hw->rfd_fetch_gap = 1;
 962         hw->rx_jumbo_th = adapter->rx_buffer_len / 8;
 963         hw->rx_jumbo_lkah = 1;
 964         hw->rrd_ret_timer = 16;
 965         hw->tpd_burst = 4;
 966         hw->tpd_fetch_th = 16;
 967         hw->txf_burst = 0x100;
 968         hw->tx_jumbo_task_th = (hw->max_frame_size + 7) >> 3;
 969         hw->tpd_fetch_gap = 1;
 970         hw->rcb_value = atl1_rcb_64;
 971         hw->dma_ord = atl1_dma_ord_enh;
 972         hw->dmar_block = atl1_dma_req_256;
 973         hw->dmaw_block = atl1_dma_req_256;
 974         hw->cmb_rrd = 4;
 975         hw->cmb_tpd = 4;
 976         hw->cmb_rx_timer = 1;   /* about 2us */
 977         hw->cmb_tx_timer = 1;   /* about 2us */
 978         hw->smb_timer = 100000; /* about 200ms */
 979
 980         spin_lock_init(&adapter->lock);
 981         spin_lock_init(&adapter->mb_lock);
 982
 983         return 0;
 984 }
 985
 986 static int mdio_read(struct net_device *netdev, int phy_id, int reg_num)
 987 {
 988         struct atl1_adapter *adapter = netdev_priv(netdev);
 989         u16 result;
 990
 991         atl1_read_phy_reg(&adapter->hw, reg_num & 0x1f, &result);
 992
 993         return result;
 994 }
 995
 996 static void mdio_write(struct net_device *netdev, int phy_id, int reg_num,
 997         int val)
 998 {
 999         struct atl1_adapter *adapter = netdev_priv(netdev);
1000
1001         atl1_write_phy_reg(&adapter->hw, reg_num, val);
1002 }
1003
1004 /*
1005  * atl1_mii_ioctl -
1006  * @netdev:
1007  * @ifreq:
1008  * @cmd:
1009  */
1010 static int atl1_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1011 {
1012         struct atl1_adapter *adapter = netdev_priv(netdev);
1013         unsigned long flags;
1014         int retval;
1015
1016         if (!netif_running(netdev))
1017                 return -EINVAL;
1018
1019         spin_lock_irqsave(&adapter->lock, flags);
1020         retval = generic_mii_ioctl(&adapter->mii, if_mii(ifr), cmd, NULL);
1021         spin_unlock_irqrestore(&adapter->lock, flags);
1022
1023         return retval;
1024 }
1025
1026 /*
1027  * atl1_setup_mem_resources - allocate Tx / RX descriptor resources
1028  * @adapter: board private structure
1029  *
1030  * Return 0 on success, negative on failure
1031  */
1032 static s32 atl1_setup_ring_resources(struct atl1_adapter *adapter)
1033 {
1034         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1035         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1036         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1037         struct atl1_ring_header *ring_header = &adapter->ring_header;
1038         struct pci_dev *pdev = adapter->pdev;
1039         int size;
1040         u8 offset = 0;
1041
1042         size = sizeof(struct atl1_buffer) * (tpd_ring->count + rfd_ring->count);
1043         tpd_ring->buffer_info = kzalloc(size, GFP_KERNEL);
1044         if (unlikely(!tpd_ring->buffer_info)) {
1045                 if (netif_msg_drv(adapter))
1046                         dev_err(&pdev->dev, "kzalloc failed , size = D%d\n",
1047                                 size);
1048                 goto err_nomem;
1049         }
1050         rfd_ring->buffer_info =
1051                 (struct atl1_buffer *)(tpd_ring->buffer_info + tpd_ring->count);
1052
1053         /*
1054          * real ring DMA buffer
1055          * each ring/block may need up to 8 bytes for alignment, hence the
1056          * additional 40 bytes tacked onto the end.
1057          */
1058         ring_header->size = size =
1059                 sizeof(struct tx_packet_desc) * tpd_ring->count
1060                 + sizeof(struct rx_free_desc) * rfd_ring->count
1061                 + sizeof(struct rx_return_desc) * rrd_ring->count
1062                 + sizeof(struct coals_msg_block)
1063                 + sizeof(struct stats_msg_block)
1064                 + 40;
1065
1066         ring_header->desc = pci_alloc_consistent(pdev, ring_header->size,
1067                 &ring_header->dma);
1068         if (unlikely(!ring_header->desc)) {
1069                 if (netif_msg_drv(adapter))
1070                         dev_err(&pdev->dev, "pci_alloc_consistent failed\n");
1071                 goto err_nomem;
1072         }
1073
1074         memset(ring_header->desc, 0, ring_header->size);
1075
1076         /* init TPD ring */
1077         tpd_ring->dma = ring_header->dma;
1078         offset = (tpd_ring->dma & 0x7) ? (8 - (ring_header->dma & 0x7)) : 0;
1079         tpd_ring->dma += offset;
1080         tpd_ring->desc = (u8 *) ring_header->desc + offset;
1081         tpd_ring->size = sizeof(struct tx_packet_desc) * tpd_ring->count;
1082
1083         /* init RFD ring */
1084         rfd_ring->dma = tpd_ring->dma + tpd_ring->size;
1085         offset = (rfd_ring->dma & 0x7) ? (8 - (rfd_ring->dma & 0x7)) : 0;
1086         rfd_ring->dma += offset;
1087         rfd_ring->desc = (u8 *) tpd_ring->desc + (tpd_ring->size + offset);
1088         rfd_ring->size = sizeof(struct rx_free_desc) * rfd_ring->count;
1089
1090
1091         /* init RRD ring */
1092         rrd_ring->dma = rfd_ring->dma + rfd_ring->size;
1093         offset = (rrd_ring->dma & 0x7) ? (8 - (rrd_ring->dma & 0x7)) : 0;
1094         rrd_ring->dma += offset;
1095         rrd_ring->desc = (u8 *) rfd_ring->desc + (rfd_ring->size + offset);
1096         rrd_ring->size = sizeof(struct rx_return_desc) * rrd_ring->count;
1097
1098
1099         /* init CMB */
1100         adapter->cmb.dma = rrd_ring->dma + rrd_ring->size;
1101         offset = (adapter->cmb.dma & 0x7) ? (8 - (adapter->cmb.dma & 0x7)) : 0;
1102         adapter->cmb.dma += offset;
1103         adapter->cmb.cmb = (struct coals_msg_block *)
1104                 ((u8 *) rrd_ring->desc + (rrd_ring->size + offset));
1105
1106         /* init SMB */
1107         adapter->smb.dma = adapter->cmb.dma + sizeof(struct coals_msg_block);
1108         offset = (adapter->smb.dma & 0x7) ? (8 - (adapter->smb.dma & 0x7)) : 0;
1109         adapter->smb.dma += offset;
1110         adapter->smb.smb = (struct stats_msg_block *)
1111                 ((u8 *) adapter->cmb.cmb +
1112                 (sizeof(struct coals_msg_block) + offset));
1113
1114         return 0;
1115
1116 err_nomem:
1117         kfree(tpd_ring->buffer_info);
1118         return -ENOMEM;
1119 }
1120
1121 static void atl1_init_ring_ptrs(struct atl1_adapter *adapter)
1122 {
1123         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1124         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1125         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1126
1127         atomic_set(&tpd_ring->next_to_use, 0);
1128         atomic_set(&tpd_ring->next_to_clean, 0);
1129
1130         rfd_ring->next_to_clean = 0;
1131         atomic_set(&rfd_ring->next_to_use, 0);
1132
1133         rrd_ring->next_to_use = 0;
1134         atomic_set(&rrd_ring->next_to_clean, 0);
1135 }
1136
1137 /*
1138  * atl1_clean_rx_ring - Free RFD Buffers
1139  * @adapter: board private structure
1140  */
1141 static void atl1_clean_rx_ring(struct atl1_adapter *adapter)
1142 {
1143         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1144         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1145         struct atl1_buffer *buffer_info;
1146         struct pci_dev *pdev = adapter->pdev;
1147         unsigned long size;
1148         unsigned int i;
1149
1150         /* Free all the Rx ring sk_buffs */
1151         for (i = 0; i < rfd_ring->count; i++) {
1152                 buffer_info = &rfd_ring->buffer_info[i];
1153                 if (buffer_info->dma) {
1154                         pci_unmap_page(pdev, buffer_info->dma,
1155                                 buffer_info->length, PCI_DMA_FROMDEVICE);
1156                         buffer_info->dma = 0;
1157                 }
1158                 if (buffer_info->skb) {
1159                         dev_kfree_skb(buffer_info->skb);
1160                         buffer_info->skb = NULL;
1161                 }
1162         }
1163
1164         size = sizeof(struct atl1_buffer) * rfd_ring->count;
1165         memset(rfd_ring->buffer_info, 0, size);
1166
1167         /* Zero out the descriptor ring */
1168         memset(rfd_ring->desc, 0, rfd_ring->size);
1169
1170         rfd_ring->next_to_clean = 0;
1171         atomic_set(&rfd_ring->next_to_use, 0);
1172
1173         rrd_ring->next_to_use = 0;
1174         atomic_set(&rrd_ring->next_to_clean, 0);
1175 }
1176
1177 /*
1178  * atl1_clean_tx_ring - Free Tx Buffers
1179  * @adapter: board private structure
1180  */
1181 static void atl1_clean_tx_ring(struct atl1_adapter *adapter)
1182 {
1183         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1184         struct atl1_buffer *buffer_info;
1185         struct pci_dev *pdev = adapter->pdev;
1186         unsigned long size;
1187         unsigned int i;
1188
1189         /* Free all the Tx ring sk_buffs */
1190         for (i = 0; i < tpd_ring->count; i++) {
1191                 buffer_info = &tpd_ring->buffer_info[i];
1192                 if (buffer_info->dma) {
1193                         pci_unmap_page(pdev, buffer_info->dma,
1194                                 buffer_info->length, PCI_DMA_TODEVICE);
1195                         buffer_info->dma = 0;
1196                 }
1197         }
1198
1199         for (i = 0; i < tpd_ring->count; i++) {
1200                 buffer_info = &tpd_ring->buffer_info[i];
1201                 if (buffer_info->skb) {
1202                         dev_kfree_skb_any(buffer_info->skb);
1203                         buffer_info->skb = NULL;
1204                 }
1205         }
1206
1207         size = sizeof(struct atl1_buffer) * tpd_ring->count;
1208         memset(tpd_ring->buffer_info, 0, size);
1209
1210         /* Zero out the descriptor ring */
1211         memset(tpd_ring->desc, 0, tpd_ring->size);
1212
1213         atomic_set(&tpd_ring->next_to_use, 0);
1214         atomic_set(&tpd_ring->next_to_clean, 0);
1215 }
1216
1217 /*
1218  * atl1_free_ring_resources - Free Tx / RX descriptor Resources
1219  * @adapter: board private structure
1220  *
1221  * Free all transmit software resources
1222  */
1223 static void atl1_free_ring_resources(struct atl1_adapter *adapter)
1224 {
1225         struct pci_dev *pdev = adapter->pdev;
1226         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
1227         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1228         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1229         struct atl1_ring_header *ring_header = &adapter->ring_header;
1230
1231         atl1_clean_tx_ring(adapter);
1232         atl1_clean_rx_ring(adapter);
1233
1234         kfree(tpd_ring->buffer_info);
1235         pci_free_consistent(pdev, ring_header->size, ring_header->desc,
1236                 ring_header->dma);
1237
1238         tpd_ring->buffer_info = NULL;
1239         tpd_ring->desc = NULL;
1240         tpd_ring->dma = 0;
1241
1242         rfd_ring->buffer_info = NULL;
1243         rfd_ring->desc = NULL;
1244         rfd_ring->dma = 0;
1245
1246         rrd_ring->desc = NULL;
1247         rrd_ring->dma = 0;
1248 }
1249
1250 static void atl1_setup_mac_ctrl(struct atl1_adapter *adapter)
1251 {
1252         u32 value;
1253         struct atl1_hw *hw = &adapter->hw;
1254         struct net_device *netdev = adapter->netdev;
1255         /* Config MAC CTRL Register */
1256         value = MAC_CTRL_TX_EN | MAC_CTRL_RX_EN;
1257         /* duplex */
1258         if (FULL_DUPLEX == adapter->link_duplex)
1259                 value |= MAC_CTRL_DUPLX;
1260         /* speed */
1261         value |= ((u32) ((SPEED_1000 == adapter->link_speed) ?
1262                          MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100) <<
1263                   MAC_CTRL_SPEED_SHIFT);
1264         /* flow control */
1265         value |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW);
1266         /* PAD & CRC */
1267         value |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD);
1268         /* preamble length */
1269         value |= (((u32) adapter->hw.preamble_len
1270                    & MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT);
1271         /* vlan */
1272         if (adapter->vlgrp)
1273                 value |= MAC_CTRL_RMV_VLAN;
1274         /* rx checksum
1275            if (adapter->rx_csum)
1276            value |= MAC_CTRL_RX_CHKSUM_EN;
1277          */
1278         /* filter mode */
1279         value |= MAC_CTRL_BC_EN;
1280         if (netdev->flags & IFF_PROMISC)
1281                 value |= MAC_CTRL_PROMIS_EN;
1282         else if (netdev->flags & IFF_ALLMULTI)
1283                 value |= MAC_CTRL_MC_ALL_EN;
1284         /* value |= MAC_CTRL_LOOPBACK; */
1285         iowrite32(value, hw->hw_addr + REG_MAC_CTRL);
1286 }
1287
1288 static u32 atl1_check_link(struct atl1_adapter *adapter)
1289 {
1290         struct atl1_hw *hw = &adapter->hw;
1291         struct net_device *netdev = adapter->netdev;
1292         u32 ret_val;
1293         u16 speed, duplex, phy_data;
1294         int reconfig = 0;
1295
1296         /* MII_BMSR must read twice */
1297         atl1_read_phy_reg(hw, MII_BMSR, &phy_data);
1298         atl1_read_phy_reg(hw, MII_BMSR, &phy_data);
1299         if (!(phy_data & BMSR_LSTATUS)) {
1300                 /* link down */
1301                 if (netif_carrier_ok(netdev)) {
1302                         /* old link state: Up */
1303                         if (netif_msg_link(adapter))
1304                                 dev_info(&adapter->pdev->dev, "link is down\n");
1305                         adapter->link_speed = SPEED_0;
1306                         netif_carrier_off(netdev);
1307                 }
1308                 return 0;
1309         }
1310
1311         /* Link Up */
1312         ret_val = atl1_get_speed_and_duplex(hw, &speed, &duplex);
1313         if (ret_val)
1314                 return ret_val;
1315
1316         switch (hw->media_type) {
1317         case MEDIA_TYPE_1000M_FULL:
1318                 if (speed != SPEED_1000 || duplex != FULL_DUPLEX)
1319                         reconfig = 1;
1320                 break;
1321         case MEDIA_TYPE_100M_FULL:
1322                 if (speed != SPEED_100 || duplex != FULL_DUPLEX)
1323                         reconfig = 1;
1324                 break;
1325         case MEDIA_TYPE_100M_HALF:
1326                 if (speed != SPEED_100 || duplex != HALF_DUPLEX)
1327                         reconfig = 1;
1328                 break;
1329         case MEDIA_TYPE_10M_FULL:
1330                 if (speed != SPEED_10 || duplex != FULL_DUPLEX)
1331                         reconfig = 1;
1332                 break;
1333         case MEDIA_TYPE_10M_HALF:
1334                 if (speed != SPEED_10 || duplex != HALF_DUPLEX)
1335                         reconfig = 1;
1336                 break;
1337         }
1338
1339         /* link result is our setting */
1340         if (!reconfig) {
1341                 if (adapter->link_speed != speed
1342                     || adapter->link_duplex != duplex) {
1343                         adapter->link_speed = speed;
1344                         adapter->link_duplex = duplex;
1345                         atl1_setup_mac_ctrl(adapter);
1346                         if (netif_msg_link(adapter))
1347                                 dev_info(&adapter->pdev->dev,
1348                                         "%s link is up %d Mbps %s\n",
1349                                         netdev->name, adapter->link_speed,
1350                                         adapter->link_duplex == FULL_DUPLEX ?
1351                                         "full duplex" : "half duplex");
1352                 }
1353                 if (!netif_carrier_ok(netdev)) {
1354                         /* Link down -> Up */
1355                         netif_carrier_on(netdev);
1356                 }
1357                 return 0;
1358         }
1359
1360         /* change original link status */
1361         if (netif_carrier_ok(netdev)) {
1362                 adapter->link_speed = SPEED_0;
1363                 netif_carrier_off(netdev);
1364                 netif_stop_queue(netdev);
1365         }
1366
1367         if (hw->media_type != MEDIA_TYPE_AUTO_SENSOR &&
1368             hw->media_type != MEDIA_TYPE_1000M_FULL) {
1369                 switch (hw->media_type) {
1370                 case MEDIA_TYPE_100M_FULL:
1371                         phy_data = MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
1372                                    MII_CR_RESET;
1373                         break;
1374                 case MEDIA_TYPE_100M_HALF:
1375                         phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
1376                         break;
1377                 case MEDIA_TYPE_10M_FULL:
1378                         phy_data =
1379                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
1380                         break;
1381                 default:
1382                         /* MEDIA_TYPE_10M_HALF: */
1383                         phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
1384                         break;
1385                 }
1386                 atl1_write_phy_reg(hw, MII_BMCR, phy_data);
1387                 return 0;
1388         }
1389
1390         /* auto-neg, insert timer to re-config phy */
1391         if (!adapter->phy_timer_pending) {
1392                 adapter->phy_timer_pending = true;
1393                 mod_timer(&adapter->phy_config_timer,
1394                           round_jiffies(jiffies + 3 * HZ));
1395         }
1396
1397         return 0;
1398 }
1399
1400 static void set_flow_ctrl_old(struct atl1_adapter *adapter)
1401 {
1402         u32 hi, lo, value;
1403
1404         /* RFD Flow Control */
1405         value = adapter->rfd_ring.count;
1406         hi = value / 16;
1407         if (hi < 2)
1408                 hi = 2;
1409         lo = value * 7 / 8;
1410
1411         value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) |
1412                 ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT);
1413         iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RXF_PAUSE_THRESH);
1414
1415         /* RRD Flow Control */
1416         value = adapter->rrd_ring.count;
1417         lo = value / 16;
1418         hi = value * 7 / 8;
1419         if (lo < 2)
1420                 lo = 2;
1421         value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) |
1422                 ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT);
1423         iowrite32(value, adapter->hw.hw_addr + REG_RXQ_RRD_PAUSE_THRESH);
1424 }
1425
1426 static void set_flow_ctrl_new(struct atl1_hw *hw)
1427 {
1428         u32 hi, lo, value;
1429
1430         /* RXF Flow Control */
1431         value = ioread32(hw->hw_addr + REG_SRAM_RXF_LEN);
1432         lo = value / 16;
1433         if (lo < 192)
1434                 lo = 192;
1435         hi = value * 7 / 8;
1436         if (hi < lo)
1437                 hi = lo + 16;
1438         value = ((hi & RXQ_RXF_PAUSE_TH_HI_MASK) << RXQ_RXF_PAUSE_TH_HI_SHIFT) |
1439                 ((lo & RXQ_RXF_PAUSE_TH_LO_MASK) << RXQ_RXF_PAUSE_TH_LO_SHIFT);
1440         iowrite32(value, hw->hw_addr + REG_RXQ_RXF_PAUSE_THRESH);
1441
1442         /* RRD Flow Control */
1443         value = ioread32(hw->hw_addr + REG_SRAM_RRD_LEN);
1444         lo = value / 8;
1445         hi = value * 7 / 8;
1446         if (lo < 2)
1447                 lo = 2;
1448         if (hi < lo)
1449                 hi = lo + 3;
1450         value = ((hi & RXQ_RRD_PAUSE_TH_HI_MASK) << RXQ_RRD_PAUSE_TH_HI_SHIFT) |
1451                 ((lo & RXQ_RRD_PAUSE_TH_LO_MASK) << RXQ_RRD_PAUSE_TH_LO_SHIFT);
1452         iowrite32(value, hw->hw_addr + REG_RXQ_RRD_PAUSE_THRESH);
1453 }
1454
1455 /*
1456  * atl1_configure - Configure Transmit&Receive Unit after Reset
1457  * @adapter: board private structure
1458  *
1459  * Configure the Tx /Rx unit of the MAC after a reset.
1460  */
1461 static u32 atl1_configure(struct atl1_adapter *adapter)
1462 {
1463         struct atl1_hw *hw = &adapter->hw;
1464         u32 value;
1465
1466         /* clear interrupt status */
1467         iowrite32(0xffffffff, adapter->hw.hw_addr + REG_ISR);
1468
1469         /* set MAC Address */
1470         value = (((u32) hw->mac_addr[2]) << 24) |
1471                 (((u32) hw->mac_addr[3]) << 16) |
1472                 (((u32) hw->mac_addr[4]) << 8) |
1473                 (((u32) hw->mac_addr[5]));
1474         iowrite32(value, hw->hw_addr + REG_MAC_STA_ADDR);
1475         value = (((u32) hw->mac_addr[0]) << 8) | (((u32) hw->mac_addr[1]));
1476         iowrite32(value, hw->hw_addr + (REG_MAC_STA_ADDR + 4));
1477
1478         /* tx / rx ring */
1479
1480         /* HI base address */
1481         iowrite32((u32) ((adapter->tpd_ring.dma & 0xffffffff00000000ULL) >> 32),
1482                 hw->hw_addr + REG_DESC_BASE_ADDR_HI);
1483         /* LO base address */
1484         iowrite32((u32) (adapter->rfd_ring.dma & 0x00000000ffffffffULL),
1485                 hw->hw_addr + REG_DESC_RFD_ADDR_LO);
1486         iowrite32((u32) (adapter->rrd_ring.dma & 0x00000000ffffffffULL),
1487                 hw->hw_addr + REG_DESC_RRD_ADDR_LO);
1488         iowrite32((u32) (adapter->tpd_ring.dma & 0x00000000ffffffffULL),
1489                 hw->hw_addr + REG_DESC_TPD_ADDR_LO);
1490         iowrite32((u32) (adapter->cmb.dma & 0x00000000ffffffffULL),
1491                 hw->hw_addr + REG_DESC_CMB_ADDR_LO);
1492         iowrite32((u32) (adapter->smb.dma & 0x00000000ffffffffULL),
1493                 hw->hw_addr + REG_DESC_SMB_ADDR_LO);
1494
1495         /* element count */
1496         value = adapter->rrd_ring.count;
1497         value <<= 16;
1498         value += adapter->rfd_ring.count;
1499         iowrite32(value, hw->hw_addr + REG_DESC_RFD_RRD_RING_SIZE);
1500         iowrite32(adapter->tpd_ring.count, hw->hw_addr +
1501                 REG_DESC_TPD_RING_SIZE);
1502
1503         /* Load Ptr */
1504         iowrite32(1, hw->hw_addr + REG_LOAD_PTR);
1505
1506         /* config Mailbox */
1507         value = ((atomic_read(&adapter->tpd_ring.next_to_use)
1508                   & MB_TPD_PROD_INDX_MASK) << MB_TPD_PROD_INDX_SHIFT) |
1509                 ((atomic_read(&adapter->rrd_ring.next_to_clean)
1510                 & MB_RRD_CONS_INDX_MASK) << MB_RRD_CONS_INDX_SHIFT) |
1511                 ((atomic_read(&adapter->rfd_ring.next_to_use)
1512                 & MB_RFD_PROD_INDX_MASK) << MB_RFD_PROD_INDX_SHIFT);
1513         iowrite32(value, hw->hw_addr + REG_MAILBOX);
1514
1515         /* config IPG/IFG */
1516         value = (((u32) hw->ipgt & MAC_IPG_IFG_IPGT_MASK)
1517                  << MAC_IPG_IFG_IPGT_SHIFT) |
1518                 (((u32) hw->min_ifg & MAC_IPG_IFG_MIFG_MASK)
1519                 << MAC_IPG_IFG_MIFG_SHIFT) |
1520                 (((u32) hw->ipgr1 & MAC_IPG_IFG_IPGR1_MASK)
1521                 << MAC_IPG_IFG_IPGR1_SHIFT) |
1522                 (((u32) hw->ipgr2 & MAC_IPG_IFG_IPGR2_MASK)
1523                 << MAC_IPG_IFG_IPGR2_SHIFT);
1524         iowrite32(value, hw->hw_addr + REG_MAC_IPG_IFG);
1525
1526         /* config  Half-Duplex Control */
1527         value = ((u32) hw->lcol & MAC_HALF_DUPLX_CTRL_LCOL_MASK) |
1528                 (((u32) hw->max_retry & MAC_HALF_DUPLX_CTRL_RETRY_MASK)
1529                 << MAC_HALF_DUPLX_CTRL_RETRY_SHIFT) |
1530                 MAC_HALF_DUPLX_CTRL_EXC_DEF_EN |
1531                 (0xa << MAC_HALF_DUPLX_CTRL_ABEBT_SHIFT) |
1532                 (((u32) hw->jam_ipg & MAC_HALF_DUPLX_CTRL_JAMIPG_MASK)
1533                 << MAC_HALF_DUPLX_CTRL_JAMIPG_SHIFT);
1534         iowrite32(value, hw->hw_addr + REG_MAC_HALF_DUPLX_CTRL);
1535
1536         /* set Interrupt Moderator Timer */
1537         iowrite16(adapter->imt, hw->hw_addr + REG_IRQ_MODU_TIMER_INIT);
1538         iowrite32(MASTER_CTRL_ITIMER_EN, hw->hw_addr + REG_MASTER_CTRL);
1539
1540         /* set Interrupt Clear Timer */
1541         iowrite16(adapter->ict, hw->hw_addr + REG_CMBDISDMA_TIMER);
1542
1543         /* set max frame size hw will accept */
1544         iowrite32(hw->max_frame_size, hw->hw_addr + REG_MTU);
1545
1546         /* jumbo size & rrd retirement timer */
1547         value = (((u32) hw->rx_jumbo_th & RXQ_JMBOSZ_TH_MASK)
1548                  << RXQ_JMBOSZ_TH_SHIFT) |
1549                 (((u32) hw->rx_jumbo_lkah & RXQ_JMBO_LKAH_MASK)
1550                 << RXQ_JMBO_LKAH_SHIFT) |
1551                 (((u32) hw->rrd_ret_timer & RXQ_RRD_TIMER_MASK)
1552                 << RXQ_RRD_TIMER_SHIFT);
1553         iowrite32(value, hw->hw_addr + REG_RXQ_JMBOSZ_RRDTIM);
1554
1555         /* Flow Control */
1556         switch (hw->dev_rev) {
1557         case 0x8001:
1558         case 0x9001:
1559         case 0x9002:
1560         case 0x9003:
1561                 set_flow_ctrl_old(adapter);
1562                 break;
1563         default:
1564                 set_flow_ctrl_new(hw);
1565                 break;
1566         }
1567
1568         /* config TXQ */
1569         value = (((u32) hw->tpd_burst & TXQ_CTRL_TPD_BURST_NUM_MASK)
1570                  << TXQ_CTRL_TPD_BURST_NUM_SHIFT) |
1571                 (((u32) hw->txf_burst & TXQ_CTRL_TXF_BURST_NUM_MASK)
1572                 << TXQ_CTRL_TXF_BURST_NUM_SHIFT) |
1573                 (((u32) hw->tpd_fetch_th & TXQ_CTRL_TPD_FETCH_TH_MASK)
1574                 << TXQ_CTRL_TPD_FETCH_TH_SHIFT) | TXQ_CTRL_ENH_MODE |
1575                 TXQ_CTRL_EN;
1576         iowrite32(value, hw->hw_addr + REG_TXQ_CTRL);
1577
1578         /* min tpd fetch gap & tx jumbo packet size threshold for taskoffload */
1579         value = (((u32) hw->tx_jumbo_task_th & TX_JUMBO_TASK_TH_MASK)
1580                 << TX_JUMBO_TASK_TH_SHIFT) |
1581                 (((u32) hw->tpd_fetch_gap & TX_TPD_MIN_IPG_MASK)
1582                 << TX_TPD_MIN_IPG_SHIFT);
1583         iowrite32(value, hw->hw_addr + REG_TX_JUMBO_TASK_TH_TPD_IPG);
1584
1585         /* config RXQ */
1586         value = (((u32) hw->rfd_burst & RXQ_CTRL_RFD_BURST_NUM_MASK)
1587                 << RXQ_CTRL_RFD_BURST_NUM_SHIFT) |
1588                 (((u32) hw->rrd_burst & RXQ_CTRL_RRD_BURST_THRESH_MASK)
1589                 << RXQ_CTRL_RRD_BURST_THRESH_SHIFT) |
1590                 (((u32) hw->rfd_fetch_gap & RXQ_CTRL_RFD_PREF_MIN_IPG_MASK)
1591                 << RXQ_CTRL_RFD_PREF_MIN_IPG_SHIFT) | RXQ_CTRL_CUT_THRU_EN |
1592                 RXQ_CTRL_EN;
1593         iowrite32(value, hw->hw_addr + REG_RXQ_CTRL);
1594
1595         /* config DMA Engine */
1596         value = ((((u32) hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK)
1597                 << DMA_CTRL_DMAR_BURST_LEN_SHIFT) |
1598                 ((((u32) hw->dmaw_block) & DMA_CTRL_DMAW_BURST_LEN_MASK)
1599                 << DMA_CTRL_DMAW_BURST_LEN_SHIFT) | DMA_CTRL_DMAR_EN |
1600                 DMA_CTRL_DMAW_EN;
1601         value |= (u32) hw->dma_ord;
1602         if (atl1_rcb_128 == hw->rcb_value)
1603                 value |= DMA_CTRL_RCB_VALUE;
1604         iowrite32(value, hw->hw_addr + REG_DMA_CTRL);
1605
1606         /* config CMB / SMB */
1607         value = (hw->cmb_tpd > adapter->tpd_ring.count) ?
1608                 hw->cmb_tpd : adapter->tpd_ring.count;
1609         value <<= 16;
1610         value |= hw->cmb_rrd;
1611         iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TH);
1612         value = hw->cmb_rx_timer | ((u32) hw->cmb_tx_timer << 16);
1613         iowrite32(value, hw->hw_addr + REG_CMB_WRITE_TIMER);
1614         iowrite32(hw->smb_timer, hw->hw_addr + REG_SMB_TIMER);
1615
1616         /* --- enable CMB / SMB */
1617         value = CSMB_CTRL_CMB_EN | CSMB_CTRL_SMB_EN;
1618         iowrite32(value, hw->hw_addr + REG_CSMB_CTRL);
1619
1620         value = ioread32(adapter->hw.hw_addr + REG_ISR);
1621         if (unlikely((value & ISR_PHY_LINKDOWN) != 0))
1622                 value = 1;      /* config failed */
1623         else
1624                 value = 0;
1625
1626         /* clear all interrupt status */
1627         iowrite32(0x3fffffff, adapter->hw.hw_addr + REG_ISR);
1628         iowrite32(0, adapter->hw.hw_addr + REG_ISR);
1629         return value;
1630 }
1631
1632 /*
1633  * atl1_pcie_patch - Patch for PCIE module
1634  */
1635 static void atl1_pcie_patch(struct atl1_adapter *adapter)
1636 {
1637         u32 value;
1638
1639         /* much vendor magic here */
1640         value = 0x6500;
1641         iowrite32(value, adapter->hw.hw_addr + 0x12FC);
1642         /* pcie flow control mode change */
1643         value = ioread32(adapter->hw.hw_addr + 0x1008);
1644         value |= 0x8000;
1645         iowrite32(value, adapter->hw.hw_addr + 0x1008);
1646 }
1647
1648 /*
1649  * When ACPI resume on some VIA MotherBoard, the Interrupt Disable bit/0x400
1650  * on PCI Command register is disable.
1651  * The function enable this bit.
1652  * Brackett, 2006/03/15
1653  */
1654 static void atl1_via_workaround(struct atl1_adapter *adapter)
1655 {
1656         unsigned long value;
1657
1658         value = ioread16(adapter->hw.hw_addr + PCI_COMMAND);
1659         if (value & PCI_COMMAND_INTX_DISABLE)
1660                 value &= ~PCI_COMMAND_INTX_DISABLE;
1661         iowrite32(value, adapter->hw.hw_addr + PCI_COMMAND);
1662 }
1663
1664 static void atl1_inc_smb(struct atl1_adapter *adapter)
1665 {
1666         struct net_device *netdev = adapter->netdev;
1667         struct stats_msg_block *smb = adapter->smb.smb;
1668
1669         /* Fill out the OS statistics structure */
1670         adapter->soft_stats.rx_packets += smb->rx_ok;
1671         adapter->soft_stats.tx_packets += smb->tx_ok;
1672         adapter->soft_stats.rx_bytes += smb->rx_byte_cnt;
1673         adapter->soft_stats.tx_bytes += smb->tx_byte_cnt;
1674         adapter->soft_stats.multicast += smb->rx_mcast;
1675         adapter->soft_stats.collisions += (smb->tx_1_col + smb->tx_2_col * 2 +
1676                 smb->tx_late_col + smb->tx_abort_col * adapter->hw.max_retry);
1677
1678         /* Rx Errors */
1679         adapter->soft_stats.rx_errors += (smb->rx_frag + smb->rx_fcs_err +
1680                 smb->rx_len_err + smb->rx_sz_ov + smb->rx_rxf_ov +
1681                 smb->rx_rrd_ov + smb->rx_align_err);
1682         adapter->soft_stats.rx_fifo_errors += smb->rx_rxf_ov;
1683         adapter->soft_stats.rx_length_errors += smb->rx_len_err;
1684         adapter->soft_stats.rx_crc_errors += smb->rx_fcs_err;
1685         adapter->soft_stats.rx_frame_errors += smb->rx_align_err;
1686         adapter->soft_stats.rx_missed_errors += (smb->rx_rrd_ov +
1687                 smb->rx_rxf_ov);
1688
1689         adapter->soft_stats.rx_pause += smb->rx_pause;
1690         adapter->soft_stats.rx_rrd_ov += smb->rx_rrd_ov;
1691         adapter->soft_stats.rx_trunc += smb->rx_sz_ov;
1692
1693         /* Tx Errors */
1694         adapter->soft_stats.tx_errors += (smb->tx_late_col +
1695                 smb->tx_abort_col + smb->tx_underrun + smb->tx_trunc);
1696         adapter->soft_stats.tx_fifo_errors += smb->tx_underrun;
1697         adapter->soft_stats.tx_aborted_errors += smb->tx_abort_col;
1698         adapter->soft_stats.tx_window_errors += smb->tx_late_col;
1699
1700         adapter->soft_stats.excecol += smb->tx_abort_col;
1701         adapter->soft_stats.deffer += smb->tx_defer;
1702         adapter->soft_stats.scc += smb->tx_1_col;
1703         adapter->soft_stats.mcc += smb->tx_2_col;
1704         adapter->soft_stats.latecol += smb->tx_late_col;
1705         adapter->soft_stats.tx_underun += smb->tx_underrun;
1706         adapter->soft_stats.tx_trunc += smb->tx_trunc;
1707         adapter->soft_stats.tx_pause += smb->tx_pause;
1708
1709         netdev->stats.rx_packets = adapter->soft_stats.rx_packets;
1710         netdev->stats.tx_packets = adapter->soft_stats.tx_packets;
1711         netdev->stats.rx_bytes = adapter->soft_stats.rx_bytes;
1712         netdev->stats.tx_bytes = adapter->soft_stats.tx_bytes;
1713         netdev->stats.multicast = adapter->soft_stats.multicast;
1714         netdev->stats.collisions = adapter->soft_stats.collisions;
1715         netdev->stats.rx_errors = adapter->soft_stats.rx_errors;
1716         netdev->stats.rx_over_errors =
1717                 adapter->soft_stats.rx_missed_errors;
1718         netdev->stats.rx_length_errors =
1719                 adapter->soft_stats.rx_length_errors;
1720         netdev->stats.rx_crc_errors = adapter->soft_stats.rx_crc_errors;
1721         netdev->stats.rx_frame_errors =
1722                 adapter->soft_stats.rx_frame_errors;
1723         netdev->stats.rx_fifo_errors = adapter->soft_stats.rx_fifo_errors;
1724         netdev->stats.rx_missed_errors =
1725                 adapter->soft_stats.rx_missed_errors;
1726         netdev->stats.tx_errors = adapter->soft_stats.tx_errors;
1727         netdev->stats.tx_fifo_errors = adapter->soft_stats.tx_fifo_errors;
1728         netdev->stats.tx_aborted_errors =
1729                 adapter->soft_stats.tx_aborted_errors;
1730         netdev->stats.tx_window_errors =
1731                 adapter->soft_stats.tx_window_errors;
1732         netdev->stats.tx_carrier_errors =
1733                 adapter->soft_stats.tx_carrier_errors;
1734 }
1735
1736 static void atl1_update_mailbox(struct atl1_adapter *adapter)
1737 {
1738         unsigned long flags;
1739         u32 tpd_next_to_use;
1740         u32 rfd_next_to_use;
1741         u32 rrd_next_to_clean;
1742         u32 value;
1743
1744         spin_lock_irqsave(&adapter->mb_lock, flags);
1745
1746         tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use);
1747         rfd_next_to_use = atomic_read(&adapter->rfd_ring.next_to_use);
1748         rrd_next_to_clean = atomic_read(&adapter->rrd_ring.next_to_clean);
1749
1750         value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) <<
1751                 MB_RFD_PROD_INDX_SHIFT) |
1752                 ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) <<
1753                 MB_RRD_CONS_INDX_SHIFT) |
1754                 ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) <<
1755                 MB_TPD_PROD_INDX_SHIFT);
1756         iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX);
1757
1758         spin_unlock_irqrestore(&adapter->mb_lock, flags);
1759 }
1760
1761 static void atl1_clean_alloc_flag(struct atl1_adapter *adapter,
1762         struct rx_return_desc *rrd, u16 offset)
1763 {
1764         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1765
1766         while (rfd_ring->next_to_clean != (rrd->buf_indx + offset)) {
1767                 rfd_ring->buffer_info[rfd_ring->next_to_clean].alloced = 0;
1768                 if (++rfd_ring->next_to_clean == rfd_ring->count) {
1769                         rfd_ring->next_to_clean = 0;
1770                 }
1771         }
1772 }
1773
1774 static void atl1_update_rfd_index(struct atl1_adapter *adapter,
1775         struct rx_return_desc *rrd)
1776 {
1777         u16 num_buf;
1778
1779         num_buf = (rrd->xsz.xsum_sz.pkt_size + adapter->rx_buffer_len - 1) /
1780                 adapter->rx_buffer_len;
1781         if (rrd->num_buf == num_buf)
1782                 /* clean alloc flag for bad rrd */
1783                 atl1_clean_alloc_flag(adapter, rrd, num_buf);
1784 }
1785
1786 static void atl1_rx_checksum(struct atl1_adapter *adapter,
1787         struct rx_return_desc *rrd, struct sk_buff *skb)
1788 {
1789         struct pci_dev *pdev = adapter->pdev;
1790
1791         /*
1792          * The L1 hardware contains a bug that erroneously sets the
1793          * PACKET_FLAG_ERR and ERR_FLAG_L4_CHKSUM bits whenever a
1794          * fragmented IP packet is received, even though the packet
1795          * is perfectly valid and its checksum is correct. There's
1796          * no way to distinguish between one of these good packets
1797          * and a packet that actually contains a TCP/UDP checksum
1798          * error, so all we can do is allow it to be handed up to
1799          * the higher layers and let it be sorted out there.
1800          */
1801
1802         skb->ip_summed = CHECKSUM_NONE;
1803
1804         if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) {
1805                 if (rrd->err_flg & (ERR_FLAG_CRC | ERR_FLAG_TRUNC |
1806                                         ERR_FLAG_CODE | ERR_FLAG_OV)) {
1807                         adapter->hw_csum_err++;
1808                         if (netif_msg_rx_err(adapter))
1809                                 dev_printk(KERN_DEBUG, &pdev->dev,
1810                                         "rx checksum error\n");
1811                         return;
1812                 }
1813         }
1814
1815         /* not IPv4 */
1816         if (!(rrd->pkt_flg & PACKET_FLAG_IPV4))
1817                 /* checksum is invalid, but it's not an IPv4 pkt, so ok */
1818                 return;
1819
1820         /* IPv4 packet */
1821         if (likely(!(rrd->err_flg &
1822                 (ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM)))) {
1823                 skb->ip_summed = CHECKSUM_UNNECESSARY;
1824                 adapter->hw_csum_good++;
1825                 return;
1826         }
1827
1828         return;
1829 }
1830
1831 /*
1832  * atl1_alloc_rx_buffers - Replace used receive buffers
1833  * @adapter: address of board private structure
1834  */
1835 static u16 atl1_alloc_rx_buffers(struct atl1_adapter *adapter)
1836 {
1837         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1838         struct pci_dev *pdev = adapter->pdev;
1839         struct page *page;
1840         unsigned long offset;
1841         struct atl1_buffer *buffer_info, *next_info;
1842         struct sk_buff *skb;
1843         u16 num_alloc = 0;
1844         u16 rfd_next_to_use, next_next;
1845         struct rx_free_desc *rfd_desc;
1846
1847         next_next = rfd_next_to_use = atomic_read(&rfd_ring->next_to_use);
1848         if (++next_next == rfd_ring->count)
1849                 next_next = 0;
1850         buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
1851         next_info = &rfd_ring->buffer_info[next_next];
1852
1853         while (!buffer_info->alloced && !next_info->alloced) {
1854                 if (buffer_info->skb) {
1855                         buffer_info->alloced = 1;
1856                         goto next;
1857                 }
1858
1859                 rfd_desc = ATL1_RFD_DESC(rfd_ring, rfd_next_to_use);
1860
1861                 skb = netdev_alloc_skb(adapter->netdev,
1862                                        adapter->rx_buffer_len + NET_IP_ALIGN);
1863                 if (unlikely(!skb)) {
1864                         /* Better luck next round */
1865                         adapter->netdev->stats.rx_dropped++;
1866                         break;
1867                 }
1868
1869                 /*
1870                  * Make buffer alignment 2 beyond a 16 byte boundary
1871                  * this will result in a 16 byte aligned IP header after
1872                  * the 14 byte MAC header is removed
1873                  */
1874                 skb_reserve(skb, NET_IP_ALIGN);
1875
1876                 buffer_info->alloced = 1;
1877                 buffer_info->skb = skb;
1878                 buffer_info->length = (u16) adapter->rx_buffer_len;
1879                 page = virt_to_page(skb->data);
1880                 offset = (unsigned long)skb->data & ~PAGE_MASK;
1881                 buffer_info->dma = pci_map_page(pdev, page, offset,
1882                                                 adapter->rx_buffer_len,
1883                                                 PCI_DMA_FROMDEVICE);
1884                 rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
1885                 rfd_desc->buf_len = cpu_to_le16(adapter->rx_buffer_len);
1886                 rfd_desc->coalese = 0;
1887
1888 next:
1889                 rfd_next_to_use = next_next;
1890                 if (unlikely(++next_next == rfd_ring->count))
1891                         next_next = 0;
1892
1893                 buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
1894                 next_info = &rfd_ring->buffer_info[next_next];
1895                 num_alloc++;
1896         }
1897
1898         if (num_alloc) {
1899                 /*
1900                  * Force memory writes to complete before letting h/w
1901                  * know there are new descriptors to fetch.  (Only
1902                  * applicable for weak-ordered memory model archs,
1903                  * such as IA-64).
1904                  */
1905                 wmb();
1906                 atomic_set(&rfd_ring->next_to_use, (int)rfd_next_to_use);
1907         }
1908         return num_alloc;
1909 }
1910
1911 static void atl1_intr_rx(struct atl1_adapter *adapter)
1912 {
1913         int i, count;
1914         u16 length;
1915         u16 rrd_next_to_clean;
1916         u32 value;
1917         struct atl1_rfd_ring *rfd_ring = &adapter->rfd_ring;
1918         struct atl1_rrd_ring *rrd_ring = &adapter->rrd_ring;
1919         struct atl1_buffer *buffer_info;
1920         struct rx_return_desc *rrd;
1921         struct sk_buff *skb;
1922
1923         count = 0;
1924
1925         rrd_next_to_clean = atomic_read(&rrd_ring->next_to_clean);
1926
1927         while (1) {
1928                 rrd = ATL1_RRD_DESC(rrd_ring, rrd_next_to_clean);
1929                 i = 1;
1930                 if (likely(rrd->xsz.valid)) {   /* packet valid */
1931 chk_rrd:
1932                         /* check rrd status */
1933                         if (likely(rrd->num_buf == 1))
1934                                 goto rrd_ok;
1935                         else if (netif_msg_rx_err(adapter)) {
1936                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1937                                         "unexpected RRD buffer count\n");
1938                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1939                                         "rx_buf_len = %d\n",
1940                                         adapter->rx_buffer_len);
1941                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1942                                         "RRD num_buf = %d\n",
1943                                         rrd->num_buf);
1944                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1945                                         "RRD pkt_len = %d\n",
1946                                         rrd->xsz.xsum_sz.pkt_size);
1947                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1948                                         "RRD pkt_flg = 0x%08X\n",
1949                                         rrd->pkt_flg);
1950                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1951                                         "RRD err_flg = 0x%08X\n",
1952                                         rrd->err_flg);
1953                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1954                                         "RRD vlan_tag = 0x%08X\n",
1955                                         rrd->vlan_tag);
1956                         }
1957
1958                         /* rrd seems to be bad */
1959                         if (unlikely(i-- > 0)) {
1960                                 /* rrd may not be DMAed completely */
1961                                 udelay(1);
1962                                 goto chk_rrd;
1963                         }
1964                         /* bad rrd */
1965                         if (netif_msg_rx_err(adapter))
1966                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
1967                                         "bad RRD\n");
1968                         /* see if update RFD index */
1969                         if (rrd->num_buf > 1)
1970                                 atl1_update_rfd_index(adapter, rrd);
1971
1972                         /* update rrd */
1973                         rrd->xsz.valid = 0;
1974                         if (++rrd_next_to_clean == rrd_ring->count)
1975                                 rrd_next_to_clean = 0;
1976                         count++;
1977                         continue;
1978                 } else {        /* current rrd still not be updated */
1979
1980                         break;
1981                 }
1982 rrd_ok:
1983                 /* clean alloc flag for bad rrd */
1984                 atl1_clean_alloc_flag(adapter, rrd, 0);
1985
1986                 buffer_info = &rfd_ring->buffer_info[rrd->buf_indx];
1987                 if (++rfd_ring->next_to_clean == rfd_ring->count)
1988                         rfd_ring->next_to_clean = 0;
1989
1990                 /* update rrd next to clean */
1991                 if (++rrd_next_to_clean == rrd_ring->count)
1992                         rrd_next_to_clean = 0;
1993                 count++;
1994
1995                 if (unlikely(rrd->pkt_flg & PACKET_FLAG_ERR)) {
1996                         if (!(rrd->err_flg &
1997                                 (ERR_FLAG_IP_CHKSUM | ERR_FLAG_L4_CHKSUM
1998                                 | ERR_FLAG_LEN))) {
1999                                 /* packet error, don't need upstream */
2000                                 buffer_info->alloced = 0;
2001                                 rrd->xsz.valid = 0;
2002                                 continue;
2003                         }
2004                 }
2005
2006                 /* Good Receive */
2007                 pci_unmap_page(adapter->pdev, buffer_info->dma,
2008                                buffer_info->length, PCI_DMA_FROMDEVICE);
2009                 buffer_info->dma = 0;
2010                 skb = buffer_info->skb;
2011                 length = le16_to_cpu(rrd->xsz.xsum_sz.pkt_size);
2012
2013                 skb_put(skb, length - ETH_FCS_LEN);
2014
2015                 /* Receive Checksum Offload */
2016                 atl1_rx_checksum(adapter, rrd, skb);
2017                 skb->protocol = eth_type_trans(skb, adapter->netdev);
2018
2019                 if (adapter->vlgrp && (rrd->pkt_flg & PACKET_FLAG_VLAN_INS)) {
2020                         u16 vlan_tag = (rrd->vlan_tag >> 4) |
2021                                         ((rrd->vlan_tag & 7) << 13) |
2022                                         ((rrd->vlan_tag & 8) << 9);
2023                         vlan_hwaccel_rx(skb, adapter->vlgrp, vlan_tag);
2024                 } else
2025                         netif_rx(skb);
2026
2027                 /* let protocol layer free skb */
2028                 buffer_info->skb = NULL;
2029                 buffer_info->alloced = 0;
2030                 rrd->xsz.valid = 0;
2031         }
2032
2033         atomic_set(&rrd_ring->next_to_clean, rrd_next_to_clean);
2034
2035         atl1_alloc_rx_buffers(adapter);
2036
2037         /* update mailbox ? */
2038         if (count) {
2039                 u32 tpd_next_to_use;
2040                 u32 rfd_next_to_use;
2041
2042                 spin_lock(&adapter->mb_lock);
2043
2044                 tpd_next_to_use = atomic_read(&adapter->tpd_ring.next_to_use);
2045                 rfd_next_to_use =
2046                     atomic_read(&adapter->rfd_ring.next_to_use);
2047                 rrd_next_to_clean =
2048                     atomic_read(&adapter->rrd_ring.next_to_clean);
2049                 value = ((rfd_next_to_use & MB_RFD_PROD_INDX_MASK) <<
2050                         MB_RFD_PROD_INDX_SHIFT) |
2051                         ((rrd_next_to_clean & MB_RRD_CONS_INDX_MASK) <<
2052                         MB_RRD_CONS_INDX_SHIFT) |
2053                         ((tpd_next_to_use & MB_TPD_PROD_INDX_MASK) <<
2054                         MB_TPD_PROD_INDX_SHIFT);
2055                 iowrite32(value, adapter->hw.hw_addr + REG_MAILBOX);
2056                 spin_unlock(&adapter->mb_lock);
2057         }
2058 }
2059
2060 static void atl1_intr_tx(struct atl1_adapter *adapter)
2061 {
2062         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2063         struct atl1_buffer *buffer_info;
2064         u16 sw_tpd_next_to_clean;
2065         u16 cmb_tpd_next_to_clean;
2066
2067         sw_tpd_next_to_clean = atomic_read(&tpd_ring->next_to_clean);
2068         cmb_tpd_next_to_clean = le16_to_cpu(adapter->cmb.cmb->tpd_cons_idx);
2069
2070         while (cmb_tpd_next_to_clean != sw_tpd_next_to_clean) {
2071                 struct tx_packet_desc *tpd;
2072
2073                 tpd = ATL1_TPD_DESC(tpd_ring, sw_tpd_next_to_clean);
2074                 buffer_info = &tpd_ring->buffer_info[sw_tpd_next_to_clean];
2075                 if (buffer_info->dma) {
2076                         pci_unmap_page(adapter->pdev, buffer_info->dma,
2077                                        buffer_info->length, PCI_DMA_TODEVICE);
2078                         buffer_info->dma = 0;
2079                 }
2080
2081                 if (buffer_info->skb) {
2082                         dev_kfree_skb_irq(buffer_info->skb);
2083                         buffer_info->skb = NULL;
2084                 }
2085
2086                 if (++sw_tpd_next_to_clean == tpd_ring->count)
2087                         sw_tpd_next_to_clean = 0;
2088         }
2089         atomic_set(&tpd_ring->next_to_clean, sw_tpd_next_to_clean);
2090
2091         if (netif_queue_stopped(adapter->netdev)
2092             && netif_carrier_ok(adapter->netdev))
2093                 netif_wake_queue(adapter->netdev);
2094 }
2095
2096 static u16 atl1_tpd_avail(struct atl1_tpd_ring *tpd_ring)
2097 {
2098         u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean);
2099         u16 next_to_use = atomic_read(&tpd_ring->next_to_use);
2100         return ((next_to_clean > next_to_use) ?
2101                 next_to_clean - next_to_use - 1 :
2102                 tpd_ring->count + next_to_clean - next_to_use - 1);
2103 }
2104
2105 static int atl1_tso(struct atl1_adapter *adapter, struct sk_buff *skb,
2106         struct tx_packet_desc *ptpd)
2107 {
2108         u8 hdr_len, ip_off;
2109         u32 real_len;
2110         int err;
2111
2112         if (skb_shinfo(skb)->gso_size) {
2113                 if (skb_header_cloned(skb)) {
2114                         err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
2115                         if (unlikely(err))
2116                                 return -1;
2117                 }
2118
2119                 if (skb->protocol == htons(ETH_P_IP)) {
2120                         struct iphdr *iph = ip_hdr(skb);
2121
2122                         real_len = (((unsigned char *)iph - skb->data) +
2123                                 ntohs(iph->tot_len));
2124                         if (real_len < skb->len)
2125                                 pskb_trim(skb, real_len);
2126                         hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb));
2127                         if (skb->len == hdr_len) {
2128                                 iph->check = 0;
2129                                 tcp_hdr(skb)->check =
2130                                         ~csum_tcpudp_magic(iph->saddr,
2131                                         iph->daddr, tcp_hdrlen(skb),
2132                                         IPPROTO_TCP, 0);
2133                                 ptpd->word3 |= (iph->ihl & TPD_IPHL_MASK) <<
2134                                         TPD_IPHL_SHIFT;
2135                                 ptpd->word3 |= ((tcp_hdrlen(skb) >> 2) &
2136                                         TPD_TCPHDRLEN_MASK) <<
2137                                         TPD_TCPHDRLEN_SHIFT;
2138                                 ptpd->word3 |= 1 << TPD_IP_CSUM_SHIFT;
2139                                 ptpd->word3 |= 1 << TPD_TCP_CSUM_SHIFT;
2140                                 return 1;
2141                         }
2142
2143                         iph->check = 0;
2144                         tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2145                                         iph->daddr, 0, IPPROTO_TCP, 0);
2146                         ip_off = (unsigned char *)iph -
2147                                 (unsigned char *) skb_network_header(skb);
2148                         if (ip_off == 8) /* 802.3-SNAP frame */
2149                                 ptpd->word3 |= 1 << TPD_ETHTYPE_SHIFT;
2150                         else if (ip_off != 0)
2151                                 return -2;
2152
2153                         ptpd->word3 |= (iph->ihl & TPD_IPHL_MASK) <<
2154                                 TPD_IPHL_SHIFT;
2155                         ptpd->word3 |= ((tcp_hdrlen(skb) >> 2) &
2156                                 TPD_TCPHDRLEN_MASK) << TPD_TCPHDRLEN_SHIFT;
2157                         ptpd->word3 |= (skb_shinfo(skb)->gso_size &
2158                                 TPD_MSS_MASK) << TPD_MSS_SHIFT;
2159                         ptpd->word3 |= 1 << TPD_SEGMENT_EN_SHIFT;
2160                         return 3;
2161                 }
2162         }
2163         return false;
2164 }
2165
2166 static int atl1_tx_csum(struct atl1_adapter *adapter, struct sk_buff *skb,
2167         struct tx_packet_desc *ptpd)
2168 {
2169         u8 css, cso;
2170
2171         if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
2172                 css = (u8) (skb->csum_start - skb_headroom(skb));
2173                 cso = css + (u8) skb->csum_offset;
2174                 if (unlikely(css & 0x1)) {
2175                         /* L1 hardware requires an even number here */
2176                         if (netif_msg_tx_err(adapter))
2177                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2178                                         "payload offset not an even number\n");
2179                         return -1;
2180                 }
2181                 ptpd->word3 |= (css & TPD_PLOADOFFSET_MASK) <<
2182                         TPD_PLOADOFFSET_SHIFT;
2183                 ptpd->word3 |= (cso & TPD_CCSUMOFFSET_MASK) <<
2184                         TPD_CCSUMOFFSET_SHIFT;
2185                 ptpd->word3 |= 1 << TPD_CUST_CSUM_EN_SHIFT;
2186                 return true;
2187         }
2188         return 0;
2189 }
2190
2191 static void atl1_tx_map(struct atl1_adapter *adapter, struct sk_buff *skb,
2192         struct tx_packet_desc *ptpd)
2193 {
2194         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2195         struct atl1_buffer *buffer_info;
2196         u16 buf_len = skb->len;
2197         struct page *page;
2198         unsigned long offset;
2199         unsigned int nr_frags;
2200         unsigned int f;
2201         int retval;
2202         u16 next_to_use;
2203         u16 data_len;
2204         u8 hdr_len;
2205
2206         buf_len -= skb->data_len;
2207         nr_frags = skb_shinfo(skb)->nr_frags;
2208         next_to_use = atomic_read(&tpd_ring->next_to_use);
2209         buffer_info = &tpd_ring->buffer_info[next_to_use];
2210         if (unlikely(buffer_info->skb))
2211                 BUG();
2212         /* put skb in last TPD */
2213         buffer_info->skb = NULL;
2214
2215         retval = (ptpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK;
2216         if (retval) {
2217                 /* TSO */
2218                 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
2219                 buffer_info->length = hdr_len;
2220                 page = virt_to_page(skb->data);
2221                 offset = (unsigned long)skb->data & ~PAGE_MASK;
2222                 buffer_info->dma = pci_map_page(adapter->pdev, page,
2223                                                 offset, hdr_len,
2224                                                 PCI_DMA_TODEVICE);
2225
2226                 if (++next_to_use == tpd_ring->count)
2227                         next_to_use = 0;
2228
2229                 if (buf_len > hdr_len) {
2230                         int i, nseg;
2231
2232                         data_len = buf_len - hdr_len;
2233                         nseg = (data_len + ATL1_MAX_TX_BUF_LEN - 1) /
2234                                 ATL1_MAX_TX_BUF_LEN;
2235                         for (i = 0; i < nseg; i++) {
2236                                 buffer_info =
2237                                     &tpd_ring->buffer_info[next_to_use];
2238                                 buffer_info->skb = NULL;
2239                                 buffer_info->length =
2240                                     (ATL1_MAX_TX_BUF_LEN >=
2241                                      data_len) ? ATL1_MAX_TX_BUF_LEN : data_len;
2242                                 data_len -= buffer_info->length;
2243                                 page = virt_to_page(skb->data +
2244                                         (hdr_len + i * ATL1_MAX_TX_BUF_LEN));
2245                                 offset = (unsigned long)(skb->data +
2246                                         (hdr_len + i * ATL1_MAX_TX_BUF_LEN)) &
2247                                         ~PAGE_MASK;
2248                                 buffer_info->dma = pci_map_page(adapter->pdev,
2249                                         page, offset, buffer_info->length,
2250                                         PCI_DMA_TODEVICE);
2251                                 if (++next_to_use == tpd_ring->count)
2252                                         next_to_use = 0;
2253                         }
2254                 }
2255         } else {
2256                 /* not TSO */
2257                 buffer_info->length = buf_len;
2258                 page = virt_to_page(skb->data);
2259                 offset = (unsigned long)skb->data & ~PAGE_MASK;
2260                 buffer_info->dma = pci_map_page(adapter->pdev, page,
2261                         offset, buf_len, PCI_DMA_TODEVICE);
2262                 if (++next_to_use == tpd_ring->count)
2263                         next_to_use = 0;
2264         }
2265
2266         for (f = 0; f < nr_frags; f++) {
2267                 struct skb_frag_struct *frag;
2268                 u16 i, nseg;
2269
2270                 frag = &skb_shinfo(skb)->frags[f];
2271                 buf_len = frag->size;
2272
2273                 nseg = (buf_len + ATL1_MAX_TX_BUF_LEN - 1) /
2274                         ATL1_MAX_TX_BUF_LEN;
2275                 for (i = 0; i < nseg; i++) {
2276                         buffer_info = &tpd_ring->buffer_info[next_to_use];
2277                         if (unlikely(buffer_info->skb))
2278                                 BUG();
2279                         buffer_info->skb = NULL;
2280                         buffer_info->length = (buf_len > ATL1_MAX_TX_BUF_LEN) ?
2281                                 ATL1_MAX_TX_BUF_LEN : buf_len;
2282                         buf_len -= buffer_info->length;
2283                         buffer_info->dma = pci_map_page(adapter->pdev,
2284                                 frag->page,
2285                                 frag->page_offset + (i * ATL1_MAX_TX_BUF_LEN),
2286                                 buffer_info->length, PCI_DMA_TODEVICE);
2287
2288                         if (++next_to_use == tpd_ring->count)
2289                                 next_to_use = 0;
2290                 }
2291         }
2292
2293         /* last tpd's buffer-info */
2294         buffer_info->skb = skb;
2295 }
2296
2297 static void atl1_tx_queue(struct atl1_adapter *adapter, u16 count,
2298        struct tx_packet_desc *ptpd)
2299 {
2300         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2301         struct atl1_buffer *buffer_info;
2302         struct tx_packet_desc *tpd;
2303         u16 j;
2304         u32 val;
2305         u16 next_to_use = (u16) atomic_read(&tpd_ring->next_to_use);
2306
2307         for (j = 0; j < count; j++) {
2308                 buffer_info = &tpd_ring->buffer_info[next_to_use];
2309                 tpd = ATL1_TPD_DESC(&adapter->tpd_ring, next_to_use);
2310                 if (tpd != ptpd)
2311                         memcpy(tpd, ptpd, sizeof(struct tx_packet_desc));
2312                 tpd->buffer_addr = cpu_to_le64(buffer_info->dma);
2313                 tpd->word2 &= ~(TPD_BUFLEN_MASK << TPD_BUFLEN_SHIFT);
2314                 tpd->word2 |= (cpu_to_le16(buffer_info->length) &
2315                         TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT;
2316
2317                 /*
2318                  * if this is the first packet in a TSO chain, set
2319                  * TPD_HDRFLAG, otherwise, clear it.
2320                  */
2321                 val = (tpd->word3 >> TPD_SEGMENT_EN_SHIFT) &
2322                         TPD_SEGMENT_EN_MASK;
2323                 if (val) {
2324                         if (!j)
2325                                 tpd->word3 |= 1 << TPD_HDRFLAG_SHIFT;
2326                         else
2327                                 tpd->word3 &= ~(1 << TPD_HDRFLAG_SHIFT);
2328                 }
2329
2330                 if (j == (count - 1))
2331                         tpd->word3 |= 1 << TPD_EOP_SHIFT;
2332
2333                 if (++next_to_use == tpd_ring->count)
2334                         next_to_use = 0;
2335         }
2336         /*
2337          * Force memory writes to complete before letting h/w
2338          * know there are new descriptors to fetch.  (Only
2339          * applicable for weak-ordered memory model archs,
2340          * such as IA-64).
2341          */
2342         wmb();
2343
2344         atomic_set(&tpd_ring->next_to_use, next_to_use);
2345 }
2346
2347 static int atl1_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
2348 {
2349         struct atl1_adapter *adapter = netdev_priv(netdev);
2350         struct atl1_tpd_ring *tpd_ring = &adapter->tpd_ring;
2351         int len = skb->len;
2352         int tso;
2353         int count = 1;
2354         int ret_val;
2355         struct tx_packet_desc *ptpd;
2356         u16 frag_size;
2357         u16 vlan_tag;
2358         unsigned int nr_frags = 0;
2359         unsigned int mss = 0;
2360         unsigned int f;
2361         unsigned int proto_hdr_len;
2362
2363         len -= skb->data_len;
2364
2365         if (unlikely(skb->len <= 0)) {
2366                 dev_kfree_skb_any(skb);
2367                 return NETDEV_TX_OK;
2368         }
2369
2370         nr_frags = skb_shinfo(skb)->nr_frags;
2371         for (f = 0; f < nr_frags; f++) {
2372                 frag_size = skb_shinfo(skb)->frags[f].size;
2373                 if (frag_size)
2374                         count += (frag_size + ATL1_MAX_TX_BUF_LEN - 1) /
2375                                 ATL1_MAX_TX_BUF_LEN;
2376         }
2377
2378         mss = skb_shinfo(skb)->gso_size;
2379         if (mss) {
2380                 if (skb->protocol == ntohs(ETH_P_IP)) {
2381                         proto_hdr_len = (skb_transport_offset(skb) +
2382                                          tcp_hdrlen(skb));
2383                         if (unlikely(proto_hdr_len > len)) {
2384                                 dev_kfree_skb_any(skb);
2385                                 return NETDEV_TX_OK;
2386                         }
2387                         /* need additional TPD ? */
2388                         if (proto_hdr_len != len)
2389                                 count += (len - proto_hdr_len +
2390                                         ATL1_MAX_TX_BUF_LEN - 1) /
2391                                         ATL1_MAX_TX_BUF_LEN;
2392                 }
2393         }
2394
2395         if (atl1_tpd_avail(&adapter->tpd_ring) < count) {
2396                 /* not enough descriptors */
2397                 netif_stop_queue(netdev);
2398                 if (netif_msg_tx_queued(adapter))
2399                         dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2400                                 "tx busy\n");
2401                 return NETDEV_TX_BUSY;
2402         }
2403
2404         ptpd = ATL1_TPD_DESC(tpd_ring,
2405                 (u16) atomic_read(&tpd_ring->next_to_use));
2406         memset(ptpd, 0, sizeof(struct tx_packet_desc));
2407
2408         if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
2409                 vlan_tag = vlan_tx_tag_get(skb);
2410                 vlan_tag = (vlan_tag << 4) | (vlan_tag >> 13) |
2411                         ((vlan_tag >> 9) & 0x8);
2412                 ptpd->word3 |= 1 << TPD_INS_VL_TAG_SHIFT;
2413                 ptpd->word2 |= (vlan_tag & TPD_VLANTAG_MASK) <<
2414                         TPD_VLANTAG_SHIFT;
2415         }
2416
2417         tso = atl1_tso(adapter, skb, ptpd);
2418         if (tso < 0) {
2419                 dev_kfree_skb_any(skb);
2420                 return NETDEV_TX_OK;
2421         }
2422
2423         if (!tso) {
2424                 ret_val = atl1_tx_csum(adapter, skb, ptpd);
2425                 if (ret_val < 0) {
2426                         dev_kfree_skb_any(skb);
2427                         return NETDEV_TX_OK;
2428                 }
2429         }
2430
2431         atl1_tx_map(adapter, skb, ptpd);
2432         atl1_tx_queue(adapter, count, ptpd);
2433         atl1_update_mailbox(adapter);
2434         mmiowb();
2435         netdev->trans_start = jiffies;
2436         return NETDEV_TX_OK;
2437 }
2438
2439 /*
2440  * atl1_intr - Interrupt Handler
2441  * @irq: interrupt number
2442  * @data: pointer to a network interface device structure
2443  * @pt_regs: CPU registers structure
2444  */
2445 static irqreturn_t atl1_intr(int irq, void *data)
2446 {
2447         struct atl1_adapter *adapter = netdev_priv(data);
2448         u32 status;
2449         int max_ints = 10;
2450
2451         status = adapter->cmb.cmb->int_stats;
2452         if (!status)
2453                 return IRQ_NONE;
2454
2455         do {
2456                 /* clear CMB interrupt status at once */
2457                 adapter->cmb.cmb->int_stats = 0;
2458
2459                 if (status & ISR_GPHY)  /* clear phy status */
2460                         atlx_clear_phy_int(adapter);
2461
2462                 /* clear ISR status, and Enable CMB DMA/Disable Interrupt */
2463                 iowrite32(status | ISR_DIS_INT, adapter->hw.hw_addr + REG_ISR);
2464
2465                 /* check if SMB intr */
2466                 if (status & ISR_SMB)
2467                         atl1_inc_smb(adapter);
2468
2469                 /* check if PCIE PHY Link down */
2470                 if (status & ISR_PHY_LINKDOWN) {
2471                         if (netif_msg_intr(adapter))
2472                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2473                                         "pcie phy link down %x\n", status);
2474                         if (netif_running(adapter->netdev)) {   /* reset MAC */
2475                                 iowrite32(0, adapter->hw.hw_addr + REG_IMR);
2476                                 schedule_work(&adapter->pcie_dma_to_rst_task);
2477                                 return IRQ_HANDLED;
2478                         }
2479                 }
2480
2481                 /* check if DMA read/write error ? */
2482                 if (status & (ISR_DMAR_TO_RST | ISR_DMAW_TO_RST)) {
2483                         if (netif_msg_intr(adapter))
2484                                 dev_printk(KERN_DEBUG, &adapter->pdev->dev,
2485                                         "pcie DMA r/w error (status = 0x%x)\n",
2486                                         status);
2487                         iowrite32(0, adapter->hw.hw_addr + REG_IMR);
2488                         schedule_work(&adapter->pcie_dma_to_rst_task);
2489                         return IRQ_HANDLED;
2490                 }
2491
2492                 /* link event */
2493                 if (status & ISR_GPHY) {
2494                         adapter->soft_stats.tx_carrier_errors++;
2495                         atl1_check_for_link(adapter);
2496                 }
2497
2498                 /* transmit event */
2499                 if (status & ISR_CMB_TX)
2500                         atl1_intr_tx(adapter);
2501
2502                 /* rx exception */
2503                 if (unlikely(status & (ISR_RXF_OV | ISR_RFD_UNRUN |
2504                         ISR_RRD_OV | ISR_HOST_RFD_UNRUN |
2505                         ISR_HOST_RRD_OV | ISR_CMB_RX))) {
2506                         if (status & (ISR_RXF_OV | ISR_RFD_UNRUN |
2507                                 ISR_RRD_OV | ISR_HOST_RFD_UNRUN |
2508                                 ISR_HOST_RRD_OV))
2509                                 if (netif_msg_intr(adapter))
2510                                         dev_printk(KERN_DEBUG,
2511                                                 &adapter->pdev->dev,
2512                                                 "rx exception, ISR = 0x%x\n",
2513                                                 status);
2514                         atl1_intr_rx(adapter);
2515                 }
2516
2517                 if (--max_ints < 0)
2518                         break;
2519
2520         } while ((status = adapter->cmb.cmb->int_stats));
2521
2522         /* re-enable Interrupt */
2523         iowrite32(ISR_DIS_SMB | ISR_DIS_DMA, adapter->hw.hw_addr + REG_ISR);
2524         return IRQ_HANDLED;
2525 }
2526
2527
2528 /*
2529  * atl1_phy_config - Timer Call-back
2530  * @data: pointer to netdev cast into an unsigned long
2531  */
2532 static void atl1_phy_config(unsigned long data)
2533 {
2534         struct atl1_adapter *adapter = (struct atl1_adapter *)data;
2535         struct atl1_hw *hw = &adapter->hw;
2536         unsigned long flags;
2537
2538         spin_lock_irqsave(&adapter->lock, flags);
2539         adapter->phy_timer_pending = false;
2540         atl1_write_phy_reg(hw, MII_ADVERTISE, hw->mii_autoneg_adv_reg);
2541         atl1_write_phy_reg(hw, MII_ATLX_CR, hw->mii_1000t_ctrl_reg);
2542         atl1_write_phy_reg(hw, MII_BMCR, MII_CR_RESET | MII_CR_AUTO_NEG_EN);
2543         spin_unlock_irqrestore(&adapter->lock, flags);
2544 }
2545
2546 /*
2547  * Orphaned vendor comment left intact here:
2548  * <vendor comment>
2549  * If TPD Buffer size equal to 0, PCIE DMAR_TO_INT
2550  * will assert. We do soft reset <0x1400=1> according
2551  * with the SPEC. BUT, it seemes that PCIE or DMA
2552  * state-machine will not be reset. DMAR_TO_INT will
2553  * assert again and again.
2554  * </vendor comment>
2555  */
2556
2557 static int atl1_reset(struct atl1_adapter *adapter)
2558 {
2559         int ret;
2560         ret = atl1_reset_hw(&adapter->hw);
2561         if (ret)
2562                 return ret;
2563         return atl1_init_hw(&adapter->hw);
2564 }
2565
2566 static s32 atl1_up(struct atl1_adapter *adapter)
2567 {
2568         struct net_device *netdev = adapter->netdev;
2569         int err;
2570         int irq_flags = IRQF_SAMPLE_RANDOM;
2571
2572         /* hardware has been reset, we need to reload some things */
2573         atlx_set_multi(netdev);
2574         atl1_init_ring_ptrs(adapter);
2575         atlx_restore_vlan(adapter);
2576         err = atl1_alloc_rx_buffers(adapter);
2577         if (unlikely(!err))
2578                 /* no RX BUFFER allocated */
2579                 return -ENOMEM;
2580
2581         if (unlikely(atl1_configure(adapter))) {
2582                 err = -EIO;
2583                 goto err_up;
2584         }
2585
2586         err = pci_enable_msi(adapter->pdev);
2587         if (err) {
2588                 if (netif_msg_ifup(adapter))
2589                         dev_info(&adapter->pdev->dev,
2590                                 "Unable to enable MSI: %d\n", err);
2591                 irq_flags |= IRQF_SHARED;
2592         }
2593
2594         err = request_irq(adapter->pdev->irq, &atl1_intr, irq_flags,
2595                         netdev->name, netdev);
2596         if (unlikely(err))
2597                 goto err_up;
2598
2599         atlx_irq_enable(adapter);
2600         atl1_check_link(adapter);
2601         netif_start_queue(netdev);
2602         return 0;
2603
2604 err_up:
2605         pci_disable_msi(adapter->pdev);
2606         /* free rx_buffers */
2607         atl1_clean_rx_ring(adapter);
2608         return err;
2609 }
2610
2611 static void atl1_down(struct atl1_adapter *adapter)
2612 {
2613         struct net_device *netdev = adapter->netdev;
2614
2615         netif_stop_queue(netdev);
2616         del_timer_sync(&adapter->phy_config_timer);
2617         adapter->phy_timer_pending = false;
2618
2619         atlx_irq_disable(adapter);
2620         free_irq(adapter->pdev->irq, netdev);
2621         pci_disable_msi(adapter->pdev);
2622         atl1_reset_hw(&adapter->hw);
2623         adapter->cmb.cmb->int_stats = 0;
2624
2625         adapter->link_speed = SPEED_0;
2626         adapter->link_duplex = -1;
2627         netif_carrier_off(netdev);
2628
2629         atl1_clean_tx_ring(adapter);
2630         atl1_clean_rx_ring(adapter);
2631 }
2632
2633 static void atl1_tx_timeout_task(struct work_struct *work)
2634 {
2635         struct atl1_adapter *adapter =
2636                 container_of(work, struct atl1_adapter, tx_timeout_task);
2637         struct net_device *netdev = adapter->netdev;
2638
2639         netif_device_detach(netdev);
2640         atl1_down(adapter);
2641         atl1_up(adapter);
2642         netif_device_attach(netdev);
2643 }
2644
2645 /*
2646  * atl1_change_mtu - Change the Maximum Transfer Unit
2647  * @netdev: network interface device structure
2648  * @new_mtu: new value for maximum frame size
2649  *
2650  * Returns 0 on success, negative on failure
2651  */
2652 static int atl1_change_mtu(struct net_device *netdev, int new_mtu)
2653 {
2654         struct atl1_adapter *adapter = netdev_priv(netdev);
2655         int old_mtu = netdev->mtu;
2656         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2657
2658         if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) ||
2659             (max_frame > MAX_JUMBO_FRAME_SIZE)) {
2660                 if (netif_msg_link(adapter))
2661                         dev_warn(&adapter->pdev->dev, "invalid MTU setting\n");
2662                 return -EINVAL;
2663         }
2664
2665         adapter->hw.max_frame_size = max_frame;
2666         adapter->hw.tx_jumbo_task_th = (max_frame + 7) >> 3;
2667         adapter->rx_buffer_len = (max_frame + 7) & ~7;
2668         adapter->hw.rx_jumbo_th = adapter->rx_buffer_len / 8;
2669
2670         netdev->mtu = new_mtu;
2671         if ((old_mtu != new_mtu) && netif_running(netdev)) {
2672                 atl1_down(adapter);
2673                 atl1_up(adapter);
2674         }
2675
2676         return 0;
2677 }
2678
2679 /*
2680  * atl1_open - Called when a network interface is made active
2681  * @netdev: network interface device structure
2682  *
2683  * Returns 0 on success, negative value on failure
2684  *
2685  * The open entry point is called when a network interface is made
2686  * active by the system (IFF_UP).  At this point all resources needed
2687  * for transmit and receive operations are allocated, the interrupt
2688  * handler is registered with the OS, the watchdog timer is started,
2689  * and the stack is notified that the interface is ready.
2690  */
2691 static int atl1_open(struct net_device *netdev)
2692 {
2693         struct atl1_adapter *adapter = netdev_priv(netdev);
2694         int err;
2695
2696         netif_carrier_off(netdev);
2697
2698         /* allocate transmit descriptors */
2699         err = atl1_setup_ring_resources(adapter);
2700         if (err)
2701                 return err;
2702
2703         err = atl1_up(adapter);
2704         if (err)
2705                 goto err_up;
2706
2707         return 0;
2708
2709 err_up:
2710         atl1_reset(adapter);
2711         return err;
2712 }
2713
2714 /*
2715  * atl1_close - Disables a network interface
2716  * @netdev: network interface device structure
2717  *
2718  * Returns 0, this is not allowed to fail
2719  *
2720  * The close entry point is called when an interface is de-activated
2721  * by the OS.  The hardware is still under the drivers control, but
2722  * needs to be disabled.  A global MAC reset is issued to stop the
2723  * hardware, and all transmit and receive resources are freed.
2724  */
2725 static int atl1_close(struct net_device *netdev)
2726 {
2727         struct atl1_adapter *adapter = netdev_priv(netdev);
2728         atl1_down(adapter);
2729         atl1_free_ring_resources(adapter);
2730         return 0;
2731 }
2732
2733 #ifdef CONFIG_PM
2734 static int atl1_suspend(struct pci_dev *pdev, pm_message_t state)
2735 {
2736         struct net_device *netdev = pci_get_drvdata(pdev);
2737         struct atl1_adapter *adapter = netdev_priv(netdev);
2738         struct atl1_hw *hw = &adapter->hw;
2739         u32 ctrl = 0;
2740         u32 wufc = adapter->wol;
2741         u32 val;
2742         int retval;
2743         u16 speed;
2744         u16 duplex;
2745
2746         netif_device_detach(netdev);
2747         if (netif_running(netdev))
2748                 atl1_down(adapter);
2749
2750         retval = pci_save_state(pdev);
2751         if (retval)
2752                 return retval;
2753
2754         atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl);
2755         atl1_read_phy_reg(hw, MII_BMSR, (u16 *) & ctrl);
2756         val = ctrl & BMSR_LSTATUS;
2757         if (val)
2758                 wufc &= ~ATLX_WUFC_LNKC;
2759
2760         if (val && wufc) {
2761                 val = atl1_get_speed_and_duplex(hw, &speed, &duplex);
2762                 if (val) {
2763                         if (netif_msg_ifdown(adapter))
2764                                 dev_printk(KERN_DEBUG, &pdev->dev,
2765                                         "error getting speed/duplex\n");
2766                         goto disable_wol;
2767                 }
2768
2769                 ctrl = 0;
2770
2771                 /* enable magic packet WOL */
2772                 if (wufc & ATLX_WUFC_MAG)
2773                         ctrl |= (WOL_MAGIC_EN | WOL_MAGIC_PME_EN);
2774                 iowrite32(ctrl, hw->hw_addr + REG_WOL_CTRL);
2775                 ioread32(hw->hw_addr + REG_WOL_CTRL);
2776
2777                 /* configure the mac */
2778                 ctrl = MAC_CTRL_RX_EN;
2779                 ctrl |= ((u32)((speed == SPEED_1000) ? MAC_CTRL_SPEED_1000 :
2780                         MAC_CTRL_SPEED_10_100) << MAC_CTRL_SPEED_SHIFT);
2781                 if (duplex == FULL_DUPLEX)
2782                         ctrl |= MAC_CTRL_DUPLX;
2783                 ctrl |= (((u32)adapter->hw.preamble_len &
2784                         MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT);
2785                 if (adapter->vlgrp)
2786                         ctrl |= MAC_CTRL_RMV_VLAN;
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
2798                 pci_enable_wake(pdev, pci_choose_state(pdev, state), 1);
2799                 goto exit;
2800         }
2801
2802         if (!val && wufc) {
2803                 ctrl |= (WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN);
2804                 iowrite32(ctrl, hw->hw_addr + REG_WOL_CTRL);
2805                 ioread32(hw->hw_addr + REG_WOL_CTRL);
2806                 iowrite32(0, hw->hw_addr + REG_MAC_CTRL);
2807                 ioread32(hw->hw_addr + REG_MAC_CTRL);
2808                 hw->phy_configured = false;
2809                 pci_enable_wake(pdev, pci_choose_state(pdev, state), 1);
2810                 goto exit;
2811         }
2812
2813 disable_wol:
2814         iowrite32(0, hw->hw_addr + REG_WOL_CTRL);
2815         ioread32(hw->hw_addr + REG_WOL_CTRL);
2816         ctrl = ioread32(hw->hw_addr + REG_PCIE_PHYMISC);
2817         ctrl |= PCIE_PHYMISC_FORCE_RCV_DET;
2818         iowrite32(ctrl, hw->hw_addr + REG_PCIE_PHYMISC);
2819         ioread32(hw->hw_addr + REG_PCIE_PHYMISC);
2820         hw->phy_configured = false;
2821         pci_enable_wake(pdev, pci_choose_state(pdev, state), 0);
2822 exit:
2823         if (netif_running(netdev))
2824                 pci_disable_msi(adapter->pdev);
2825         pci_disable_device(pdev);
2826         pci_set_power_state(pdev, pci_choose_state(pdev, state));
2827
2828         return 0;
2829 }
2830
2831 static int atl1_resume(struct pci_dev *pdev)
2832 {
2833         struct net_device *netdev = pci_get_drvdata(pdev);
2834         struct atl1_adapter *adapter = netdev_priv(netdev);
2835         u32 err;
2836
2837         pci_set_power_state(pdev, PCI_D0);
2838         pci_restore_state(pdev);
2839
2840         err = pci_enable_device(pdev);
2841         if (err) {
2842                 if (netif_msg_ifup(adapter))
2843                         dev_printk(KERN_DEBUG, &pdev->dev,
2844                                 "error enabling pci device\n");
2845                 return err;
2846         }
2847
2848         pci_set_master(pdev);
2849         iowrite32(0, adapter->hw.hw_addr + REG_WOL_CTRL);
2850         pci_enable_wake(pdev, PCI_D3hot, 0);
2851         pci_enable_wake(pdev, PCI_D3cold, 0);
2852
2853         atl1_reset_hw(&adapter->hw);
2854         adapter->cmb.cmb->int_stats = 0;
2855
2856         if (netif_running(netdev))
2857                 atl1_up(adapter);
2858         netif_device_attach(netdev);
2859
2860         return 0;
2861 }
2862 #else
2863 #define atl1_suspend NULL
2864 #define atl1_resume NULL
2865 #endif
2866
2867 static void atl1_shutdown(struct pci_dev *pdev)
2868 {
2869 #ifdef CONFIG_PM
2870         atl1_suspend(pdev, PMSG_SUSPEND);
2871 #endif
2872 }
2873
2874 #ifdef CONFIG_NET_POLL_CONTROLLER
2875 static void atl1_poll_controller(struct net_device *netdev)
2876 {
2877         disable_irq(netdev->irq);
2878         atl1_intr(netdev->irq, netdev);
2879         enable_irq(netdev->irq);
2880 }
2881 #endif
2882
2883 static const struct net_device_ops atl1_netdev_ops = {
2884         .ndo_open               = atl1_open,
2885         .ndo_stop               = atl1_close,
2886         .ndo_start_xmit         = atl1_xmit_frame,
2887         .ndo_set_multicast_list = atlx_set_multi,
2888         .ndo_validate_addr      = eth_validate_addr,
2889         .ndo_set_mac_address    = atl1_set_mac,
2890         .ndo_change_mtu         = atl1_change_mtu,
2891         .ndo_do_ioctl           = atlx_ioctl,
2892         .ndo_tx_timeout         = atlx_tx_timeout,
2893         .ndo_vlan_rx_register   = atlx_vlan_rx_register,
2894 #ifdef CONFIG_NET_POLL_CONTROLLER
2895         .ndo_poll_controller    = atl1_poll_controller,
2896 #endif
2897 };
2898
2899 /*
2900  * atl1_probe - Device Initialization Routine
2901  * @pdev: PCI device information struct
2902  * @ent: entry in atl1_pci_tbl
2903  *
2904  * Returns 0 on success, negative on failure
2905  *
2906  * atl1_probe initializes an adapter identified by a pci_dev structure.
2907  * The OS initialization, configuring of the adapter private structure,
2908  * and a hardware reset occur.
2909  */
2910 static int __devinit atl1_probe(struct pci_dev *pdev,
2911         const struct pci_device_id *ent)
2912 {
2913         struct net_device *netdev;
2914         struct atl1_adapter *adapter;
2915         static int cards_found = 0;
2916         int err;
2917
2918         err = pci_enable_device(pdev);
2919         if (err)
2920                 return err;
2921
2922         /*
2923          * The atl1 chip can DMA to 64-bit addresses, but it uses a single
2924          * shared register for the high 32 bits, so only a single, aligned,
2925          * 4 GB physical address range can be used at a time.
2926          *
2927          * Supporting 64-bit DMA on this hardware is more trouble than it's
2928          * worth.  It is far easier to limit to 32-bit DMA than update
2929          * various kernel subsystems to support the mechanics required by a
2930          * fixed-high-32-bit system.
2931          */
2932         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2933         if (err) {
2934                 dev_err(&pdev->dev, "no usable DMA configuration\n");
2935                 goto err_dma;
2936         }
2937         /*
2938          * Mark all PCI regions associated with PCI device
2939          * pdev as being reserved by owner atl1_driver_name
2940          */
2941         err = pci_request_regions(pdev, ATLX_DRIVER_NAME);
2942         if (err)
2943                 goto err_request_regions;
2944
2945         /*
2946          * Enables bus-mastering on the device and calls
2947          * pcibios_set_master to do the needed arch specific settings
2948          */
2949         pci_set_master(pdev);
2950
2951         netdev = alloc_etherdev(sizeof(struct atl1_adapter));
2952         if (!netdev) {
2953                 err = -ENOMEM;
2954                 goto err_alloc_etherdev;
2955         }
2956         SET_NETDEV_DEV(netdev, &pdev->dev);
2957
2958         pci_set_drvdata(pdev, netdev);
2959         adapter = netdev_priv(netdev);
2960         adapter->netdev = netdev;
2961         adapter->pdev = pdev;
2962         adapter->hw.back = adapter;
2963         adapter->msg_enable = netif_msg_init(debug, atl1_default_msg);
2964
2965         adapter->hw.hw_addr = pci_iomap(pdev, 0, 0);
2966         if (!adapter->hw.hw_addr) {
2967                 err = -EIO;
2968                 goto err_pci_iomap;
2969         }
2970         /* get device revision number */
2971         adapter->hw.dev_rev = ioread16(adapter->hw.hw_addr +
2972                 (REG_MASTER_CTRL + 2));
2973         if (netif_msg_probe(adapter))
2974                 dev_info(&pdev->dev, "version %s\n", ATLX_DRIVER_VERSION);
2975
2976         /* set default ring resource counts */
2977         adapter->rfd_ring.count = adapter->rrd_ring.count = ATL1_DEFAULT_RFD;
2978         adapter->tpd_ring.count = ATL1_DEFAULT_TPD;
2979
2980         adapter->mii.dev = netdev;
2981         adapter->mii.mdio_read = mdio_read;
2982         adapter->mii.mdio_write = mdio_write;
2983         adapter->mii.phy_id_mask = 0x1f;
2984         adapter->mii.reg_num_mask = 0x1f;
2985
2986         netdev->netdev_ops = &atl1_netdev_ops;
2987         netdev->watchdog_timeo = 5 * HZ;
2988
2989         netdev->ethtool_ops = &atl1_ethtool_ops;
2990         adapter->bd_number = cards_found;
2991
2992         /* setup the private structure */
2993         err = atl1_sw_init(adapter);
2994         if (err)
2995                 goto err_common;
2996
2997         netdev->features = NETIF_F_HW_CSUM;
2998         netdev->features |= NETIF_F_SG;
2999         netdev->features |= (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX);
3000
3001         /*
3002          * patch for some L1 of old version,
3003          * the final version of L1 may not need these
3004          * patches
3005          */
3006         /* atl1_pcie_patch(adapter); */
3007
3008         /* really reset GPHY core */
3009         iowrite16(0, adapter->hw.hw_addr + REG_PHY_ENABLE);
3010
3011         /*
3012          * reset the controller to
3013          * put the device in a known good starting state
3014          */
3015         if (atl1_reset_hw(&adapter->hw)) {
3016                 err = -EIO;
3017                 goto err_common;
3018         }
3019
3020         /* copy the MAC address out of the EEPROM */
3021         atl1_read_mac_addr(&adapter->hw);
3022         memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
3023
3024         if (!is_valid_ether_addr(netdev->dev_addr)) {
3025                 err = -EIO;
3026                 goto err_common;
3027         }
3028
3029         atl1_check_options(adapter);
3030
3031         /* pre-init the MAC, and setup link */
3032         err = atl1_init_hw(&adapter->hw);
3033         if (err) {
3034                 err = -EIO;
3035                 goto err_common;
3036         }
3037
3038         atl1_pcie_patch(adapter);
3039         /* assume we have no link for now */
3040         netif_carrier_off(netdev);
3041         netif_stop_queue(netdev);
3042
3043         setup_timer(&adapter->phy_config_timer, &atl1_phy_config,
3044                     (unsigned long)adapter);
3045         adapter->phy_timer_pending = false;
3046
3047         INIT_WORK(&adapter->tx_timeout_task, atl1_tx_timeout_task);
3048
3049         INIT_WORK(&adapter->link_chg_task, atlx_link_chg_task);
3050
3051         INIT_WORK(&adapter->pcie_dma_to_rst_task, atl1_tx_timeout_task);
3052
3053         err = register_netdev(netdev);
3054         if (err)
3055                 goto err_common;
3056
3057         cards_found++;
3058         atl1_via_workaround(adapter);
3059         return 0;
3060
3061 err_common:
3062         pci_iounmap(pdev, adapter->hw.hw_addr);
3063 err_pci_iomap:
3064         free_netdev(netdev);
3065 err_alloc_etherdev:
3066         pci_release_regions(pdev);
3067 err_dma:
3068 err_request_regions:
3069         pci_disable_device(pdev);
3070         return err;
3071 }
3072
3073 /*
3074  * atl1_remove - Device Removal Routine
3075  * @pdev: PCI device information struct
3076  *
3077  * atl1_remove is called by the PCI subsystem to alert the driver
3078  * that it should release a PCI device.  The could be caused by a
3079  * Hot-Plug event, or because the driver is going to be removed from
3080  * memory.
3081  */
3082 static void __devexit atl1_remove(struct pci_dev *pdev)
3083 {
3084         struct net_device *netdev = pci_get_drvdata(pdev);
3085         struct atl1_adapter *adapter;
3086         /* Device not available. Return. */
3087         if (!netdev)
3088                 return;
3089
3090         adapter = netdev_priv(netdev);
3091
3092         /*
3093          * Some atl1 boards lack persistent storage for their MAC, and get it
3094          * from the BIOS during POST.  If we've been messing with the MAC
3095          * address, we need to save the permanent one.
3096          */
3097         if (memcmp(adapter->hw.mac_addr, adapter->hw.perm_mac_addr, ETH_ALEN)) {
3098                 memcpy(adapter->hw.mac_addr, adapter->hw.perm_mac_addr,
3099                         ETH_ALEN);
3100                 atl1_set_mac_addr(&adapter->hw);
3101         }
3102
3103         iowrite16(0, adapter->hw.hw_addr + REG_PHY_ENABLE);
3104         unregister_netdev(netdev);
3105         pci_iounmap(pdev, adapter->hw.hw_addr);
3106         pci_release_regions(pdev);
3107         free_netdev(netdev);
3108         pci_disable_device(pdev);
3109 }
3110
3111 static struct pci_driver atl1_driver = {
3112         .name = ATLX_DRIVER_NAME,
3113         .id_table = atl1_pci_tbl,
3114         .probe = atl1_probe,
3115         .remove = __devexit_p(atl1_remove),
3116         .suspend = atl1_suspend,
3117         .resume = atl1_resume,
3118         .shutdown = atl1_shutdown
3119 };
3120
3121 /*
3122  * atl1_exit_module - Driver Exit Cleanup Routine
3123  *
3124  * atl1_exit_module is called just before the driver is removed
3125  * from memory.
3126  */
3127 static void __exit atl1_exit_module(void)
3128 {
3129         pci_unregister_driver(&atl1_driver);
3130 }
3131
3132 /*
3133  * atl1_init_module - Driver Registration Routine
3134  *
3135  * atl1_init_module is the first routine called when the driver is
3136  * loaded. All it does is register with the PCI subsystem.
3137  */
3138 static int __init atl1_init_module(void)
3139 {
3140         return pci_register_driver(&atl1_driver);
3141 }
3142
3143 module_init(atl1_init_module);
3144 module_exit(atl1_exit_module);
3145
3146 struct atl1_stats {
3147         char stat_string[ETH_GSTRING_LEN];
3148         int sizeof_stat;
3149         int stat_offset;
3150 };
3151
3152 #define ATL1_STAT(m) \
3153         sizeof(((struct atl1_adapter *)0)->m), offsetof(struct atl1_adapter, m)
3154
3155 static struct atl1_stats atl1_gstrings_stats[] = {
3156         {"rx_packets", ATL1_STAT(soft_stats.rx_packets)},
3157         {"tx_packets", ATL1_STAT(soft_stats.tx_packets)},
3158         {"rx_bytes", ATL1_STAT(soft_stats.rx_bytes)},
3159         {"tx_bytes", ATL1_STAT(soft_stats.tx_bytes)},
3160         {"rx_errors", ATL1_STAT(soft_stats.rx_errors)},
3161         {"tx_errors", ATL1_STAT(soft_stats.tx_errors)},
3162         {"multicast", ATL1_STAT(soft_stats.multicast)},
3163         {"collisions", ATL1_STAT(soft_stats.collisions)},
3164         {"rx_length_errors", ATL1_STAT(soft_stats.rx_length_errors)},
3165         {"rx_over_errors", ATL1_STAT(soft_stats.rx_missed_errors)},
3166         {"rx_crc_errors", ATL1_STAT(soft_stats.rx_crc_errors)},
3167         {"rx_frame_errors", ATL1_STAT(soft_stats.rx_frame_errors)},
3168         {"rx_fifo_errors", ATL1_STAT(soft_stats.rx_fifo_errors)},
3169         {"rx_missed_errors", ATL1_STAT(soft_stats.rx_missed_errors)},
3170         {"tx_aborted_errors", ATL1_STAT(soft_stats.tx_aborted_errors)},
3171         {"tx_carrier_errors", ATL1_STAT(soft_stats.tx_carrier_errors)},
3172         {"tx_fifo_errors", ATL1_STAT(soft_stats.tx_fifo_errors)},
3173         {"tx_window_errors", ATL1_STAT(soft_stats.tx_window_errors)},
3174         {"tx_abort_exce_coll", ATL1_STAT(soft_stats.excecol)},
3175         {"tx_abort_late_coll", ATL1_STAT(soft_stats.latecol)},
3176         {"tx_deferred_ok", ATL1_STAT(soft_stats.deffer)},
3177         {"tx_single_coll_ok", ATL1_STAT(soft_stats.scc)},
3178         {"tx_multi_coll_ok", ATL1_STAT(soft_stats.mcc)},
3179         {"tx_underun", ATL1_STAT(soft_stats.tx_underun)},
3180         {"tx_trunc", ATL1_STAT(soft_stats.tx_trunc)},
3181         {"tx_pause", ATL1_STAT(soft_stats.tx_pause)},
3182         {"rx_pause", ATL1_STAT(soft_stats.rx_pause)},
3183         {"rx_rrd_ov", ATL1_STAT(soft_stats.rx_rrd_ov)},
3184         {"rx_trunc", ATL1_STAT(soft_stats.rx_trunc)}
3185 };
3186
3187 static void atl1_get_ethtool_stats(struct net_device *netdev,
3188         struct ethtool_stats *stats, u64 *data)
3189 {
3190         struct atl1_adapter *adapter = netdev_priv(netdev);
3191         int i;
3192         char *p;
3193
3194         for (i = 0; i < ARRAY_SIZE(atl1_gstrings_stats); i++) {
3195                 p = (char *)adapter+atl1_gstrings_stats[i].stat_offset;
3196                 data[i] = (atl1_gstrings_stats[i].sizeof_stat ==
3197                         sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
3198         }
3199
3200 }
3201
3202 static int atl1_get_sset_count(struct net_device *netdev, int sset)
3203 {
3204         switch (sset) {
3205         case ETH_SS_STATS:
3206                 return ARRAY_SIZE(atl1_gstrings_stats);
3207         default:
3208                 return -EOPNOTSUPP;
3209         }
3210 }
3211
3212 static int atl1_get_settings(struct net_device *netdev,
3213         struct ethtool_cmd *ecmd)
3214 {
3215         struct atl1_adapter *adapter = netdev_priv(netdev);
3216         struct atl1_hw *hw = &adapter->hw;
3217
3218         ecmd->supported = (SUPPORTED_10baseT_Half |
3219                            SUPPORTED_10baseT_Full |
3220                            SUPPORTED_100baseT_Half |
3221                            SUPPORTED_100baseT_Full |
3222                            SUPPORTED_1000baseT_Full |
3223                            SUPPORTED_Autoneg | SUPPORTED_TP);
3224         ecmd->advertising = ADVERTISED_TP;
3225         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3226             hw->media_type == MEDIA_TYPE_1000M_FULL) {
3227                 ecmd->advertising |= ADVERTISED_Autoneg;
3228                 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR) {
3229                         ecmd->advertising |= ADVERTISED_Autoneg;
3230                         ecmd->advertising |=
3231                             (ADVERTISED_10baseT_Half |
3232                              ADVERTISED_10baseT_Full |
3233                              ADVERTISED_100baseT_Half |
3234                              ADVERTISED_100baseT_Full |
3235                              ADVERTISED_1000baseT_Full);
3236                 } else
3237                         ecmd->advertising |= (ADVERTISED_1000baseT_Full);
3238         }
3239         ecmd->port = PORT_TP;
3240         ecmd->phy_address = 0;
3241         ecmd->transceiver = XCVR_INTERNAL;
3242
3243         if (netif_carrier_ok(adapter->netdev)) {
3244                 u16 link_speed, link_duplex;
3245                 atl1_get_speed_and_duplex(hw, &link_speed, &link_duplex);
3246                 ecmd->speed = link_speed;
3247                 if (link_duplex == FULL_DUPLEX)
3248                         ecmd->duplex = DUPLEX_FULL;
3249                 else
3250                         ecmd->duplex = DUPLEX_HALF;
3251         } else {
3252                 ecmd->speed = -1;
3253                 ecmd->duplex = -1;
3254         }
3255         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3256             hw->media_type == MEDIA_TYPE_1000M_FULL)
3257                 ecmd->autoneg = AUTONEG_ENABLE;
3258         else
3259                 ecmd->autoneg = AUTONEG_DISABLE;
3260
3261         return 0;
3262 }
3263
3264 static int atl1_set_settings(struct net_device *netdev,
3265         struct ethtool_cmd *ecmd)
3266 {
3267         struct atl1_adapter *adapter = netdev_priv(netdev);
3268         struct atl1_hw *hw = &adapter->hw;
3269         u16 phy_data;
3270         int ret_val = 0;
3271         u16 old_media_type = hw->media_type;
3272
3273         if (netif_running(adapter->netdev)) {
3274                 if (netif_msg_link(adapter))
3275                         dev_dbg(&adapter->pdev->dev,
3276                                 "ethtool shutting down adapter\n");
3277                 atl1_down(adapter);
3278         }
3279
3280         if (ecmd->autoneg == AUTONEG_ENABLE)
3281                 hw->media_type = MEDIA_TYPE_AUTO_SENSOR;
3282         else {
3283                 if (ecmd->speed == SPEED_1000) {
3284                         if (ecmd->duplex != DUPLEX_FULL) {
3285                                 if (netif_msg_link(adapter))
3286                                         dev_warn(&adapter->pdev->dev,
3287                                                 "1000M half is invalid\n");
3288                                 ret_val = -EINVAL;
3289                                 goto exit_sset;
3290                         }
3291                         hw->media_type = MEDIA_TYPE_1000M_FULL;
3292                 } else if (ecmd->speed == SPEED_100) {
3293                         if (ecmd->duplex == DUPLEX_FULL)
3294                                 hw->media_type = MEDIA_TYPE_100M_FULL;
3295                         else
3296                                 hw->media_type = MEDIA_TYPE_100M_HALF;
3297                 } else {
3298                         if (ecmd->duplex == DUPLEX_FULL)
3299                                 hw->media_type = MEDIA_TYPE_10M_FULL;
3300                         else
3301                                 hw->media_type = MEDIA_TYPE_10M_HALF;
3302                 }
3303         }
3304         switch (hw->media_type) {
3305         case MEDIA_TYPE_AUTO_SENSOR:
3306                 ecmd->advertising =
3307                     ADVERTISED_10baseT_Half |
3308                     ADVERTISED_10baseT_Full |
3309                     ADVERTISED_100baseT_Half |
3310                     ADVERTISED_100baseT_Full |
3311                     ADVERTISED_1000baseT_Full |
3312                     ADVERTISED_Autoneg | ADVERTISED_TP;
3313                 break;
3314         case MEDIA_TYPE_1000M_FULL:
3315                 ecmd->advertising =
3316                     ADVERTISED_1000baseT_Full |
3317                     ADVERTISED_Autoneg | ADVERTISED_TP;
3318                 break;
3319         default:
3320                 ecmd->advertising = 0;
3321                 break;
3322         }
3323         if (atl1_phy_setup_autoneg_adv(hw)) {
3324                 ret_val = -EINVAL;
3325                 if (netif_msg_link(adapter))
3326                         dev_warn(&adapter->pdev->dev,
3327                                 "invalid ethtool speed/duplex setting\n");
3328                 goto exit_sset;
3329         }
3330         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3331             hw->media_type == MEDIA_TYPE_1000M_FULL)
3332                 phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN;
3333         else {
3334                 switch (hw->media_type) {
3335                 case MEDIA_TYPE_100M_FULL:
3336                         phy_data =
3337                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_100 |
3338                             MII_CR_RESET;
3339                         break;
3340                 case MEDIA_TYPE_100M_HALF:
3341                         phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
3342                         break;
3343                 case MEDIA_TYPE_10M_FULL:
3344                         phy_data =
3345                             MII_CR_FULL_DUPLEX | MII_CR_SPEED_10 | MII_CR_RESET;
3346                         break;
3347                 default:
3348                         /* MEDIA_TYPE_10M_HALF: */
3349                         phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
3350                         break;
3351                 }
3352         }
3353         atl1_write_phy_reg(hw, MII_BMCR, phy_data);
3354 exit_sset:
3355         if (ret_val)
3356                 hw->media_type = old_media_type;
3357
3358         if (netif_running(adapter->netdev)) {
3359                 if (netif_msg_link(adapter))
3360                         dev_dbg(&adapter->pdev->dev,
3361                                 "ethtool starting adapter\n");
3362                 atl1_up(adapter);
3363         } else if (!ret_val) {
3364                 if (netif_msg_link(adapter))
3365                         dev_dbg(&adapter->pdev->dev,
3366                                 "ethtool resetting adapter\n");
3367                 atl1_reset(adapter);
3368         }
3369         return ret_val;
3370 }
3371
3372 static void atl1_get_drvinfo(struct net_device *netdev,
3373         struct ethtool_drvinfo *drvinfo)
3374 {
3375         struct atl1_adapter *adapter = netdev_priv(netdev);
3376
3377         strncpy(drvinfo->driver, ATLX_DRIVER_NAME, sizeof(drvinfo->driver));
3378         strncpy(drvinfo->version, ATLX_DRIVER_VERSION,
3379                 sizeof(drvinfo->version));
3380         strncpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
3381         strncpy(drvinfo->bus_info, pci_name(adapter->pdev),
3382                 sizeof(drvinfo->bus_info));
3383         drvinfo->eedump_len = ATL1_EEDUMP_LEN;
3384 }
3385
3386 static void atl1_get_wol(struct net_device *netdev,
3387         struct ethtool_wolinfo *wol)
3388 {
3389         struct atl1_adapter *adapter = netdev_priv(netdev);
3390
3391         wol->supported = WAKE_MAGIC;
3392         wol->wolopts = 0;
3393         if (adapter->wol & ATLX_WUFC_MAG)
3394                 wol->wolopts |= WAKE_MAGIC;
3395         return;
3396 }
3397
3398 static int atl1_set_wol(struct net_device *netdev,
3399         struct ethtool_wolinfo *wol)
3400 {
3401         struct atl1_adapter *adapter = netdev_priv(netdev);
3402
3403         if (wol->wolopts & (WAKE_PHY | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST |
3404                 WAKE_ARP | WAKE_MAGICSECURE))
3405                 return -EOPNOTSUPP;
3406         adapter->wol = 0;
3407         if (wol->wolopts & WAKE_MAGIC)
3408                 adapter->wol |= ATLX_WUFC_MAG;
3409         return 0;
3410 }
3411
3412 static u32 atl1_get_msglevel(struct net_device *netdev)
3413 {
3414         struct atl1_adapter *adapter = netdev_priv(netdev);
3415         return adapter->msg_enable;
3416 }
3417
3418 static void atl1_set_msglevel(struct net_device *netdev, u32 value)
3419 {
3420         struct atl1_adapter *adapter = netdev_priv(netdev);
3421         adapter->msg_enable = value;
3422 }
3423
3424 static int atl1_get_regs_len(struct net_device *netdev)
3425 {
3426         return ATL1_REG_COUNT * sizeof(u32);
3427 }
3428
3429 static void atl1_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
3430         void *p)
3431 {
3432         struct atl1_adapter *adapter = netdev_priv(netdev);
3433         struct atl1_hw *hw = &adapter->hw;
3434         unsigned int i;
3435         u32 *regbuf = p;
3436
3437         for (i = 0; i < ATL1_REG_COUNT; i++) {
3438                 /*
3439                  * This switch statement avoids reserved regions
3440                  * of register space.
3441                  */
3442                 switch (i) {
3443                 case 6 ... 9:
3444                 case 14:
3445                 case 29 ... 31:
3446                 case 34 ... 63:
3447                 case 75 ... 127:
3448                 case 136 ... 1023:
3449                 case 1027 ... 1087:
3450                 case 1091 ... 1151:
3451                 case 1194 ... 1195:
3452                 case 1200 ... 1201:
3453                 case 1206 ... 1213:
3454                 case 1216 ... 1279:
3455                 case 1290 ... 1311:
3456                 case 1323 ... 1343:
3457                 case 1358 ... 1359:
3458                 case 1368 ... 1375:
3459                 case 1378 ... 1383:
3460                 case 1388 ... 1391:
3461                 case 1393 ... 1395:
3462                 case 1402 ... 1403:
3463                 case 1410 ... 1471:
3464                 case 1522 ... 1535:
3465                         /* reserved region; don't read it */
3466                         regbuf[i] = 0;
3467                         break;
3468                 default:
3469                         /* unreserved region */
3470                         regbuf[i] = ioread32(hw->hw_addr + (i * sizeof(u32)));
3471                 }
3472         }
3473 }
3474
3475 static void atl1_get_ringparam(struct net_device *netdev,
3476         struct ethtool_ringparam *ring)
3477 {
3478         struct atl1_adapter *adapter = netdev_priv(netdev);
3479         struct atl1_tpd_ring *txdr = &adapter->tpd_ring;
3480         struct atl1_rfd_ring *rxdr = &adapter->rfd_ring;
3481
3482         ring->rx_max_pending = ATL1_MAX_RFD;
3483         ring->tx_max_pending = ATL1_MAX_TPD;
3484         ring->rx_mini_max_pending = 0;
3485         ring->rx_jumbo_max_pending = 0;
3486         ring->rx_pending = rxdr->count;
3487         ring->tx_pending = txdr->count;
3488         ring->rx_mini_pending = 0;
3489         ring->rx_jumbo_pending = 0;
3490 }
3491
3492 static int atl1_set_ringparam(struct net_device *netdev,
3493         struct ethtool_ringparam *ring)
3494 {
3495         struct atl1_adapter *adapter = netdev_priv(netdev);
3496         struct atl1_tpd_ring *tpdr = &adapter->tpd_ring;
3497         struct atl1_rrd_ring *rrdr = &adapter->rrd_ring;
3498         struct atl1_rfd_ring *rfdr = &adapter->rfd_ring;
3499
3500         struct atl1_tpd_ring tpd_old, tpd_new;
3501         struct atl1_rfd_ring rfd_old, rfd_new;
3502         struct atl1_rrd_ring rrd_old, rrd_new;
3503         struct atl1_ring_header rhdr_old, rhdr_new;
3504         int err;
3505
3506         tpd_old = adapter->tpd_ring;
3507         rfd_old = adapter->rfd_ring;
3508         rrd_old = adapter->rrd_ring;
3509         rhdr_old = adapter->ring_header;
3510
3511         if (netif_running(adapter->netdev))
3512                 atl1_down(adapter);
3513
3514         rfdr->count = (u16) max(ring->rx_pending, (u32) ATL1_MIN_RFD);
3515         rfdr->count = rfdr->count > ATL1_MAX_RFD ? ATL1_MAX_RFD :
3516                         rfdr->count;
3517         rfdr->count = (rfdr->count + 3) & ~3;
3518         rrdr->count = rfdr->count;
3519
3520         tpdr->count = (u16) max(ring->tx_pending, (u32) ATL1_MIN_TPD);
3521         tpdr->count = tpdr->count > ATL1_MAX_TPD ? ATL1_MAX_TPD :
3522                         tpdr->count;
3523         tpdr->count = (tpdr->count + 3) & ~3;
3524
3525         if (netif_running(adapter->netdev)) {
3526                 /* try to get new resources before deleting old */
3527                 err = atl1_setup_ring_resources(adapter);
3528                 if (err)
3529                         goto err_setup_ring;
3530
3531                 /*
3532                  * save the new, restore the old in order to free it,
3533                  * then restore the new back again
3534                  */
3535
3536                 rfd_new = adapter->rfd_ring;
3537                 rrd_new = adapter->rrd_ring;
3538                 tpd_new = adapter->tpd_ring;
3539                 rhdr_new = adapter->ring_header;
3540                 adapter->rfd_ring = rfd_old;
3541                 adapter->rrd_ring = rrd_old;
3542                 adapter->tpd_ring = tpd_old;
3543                 adapter->ring_header = rhdr_old;
3544                 atl1_free_ring_resources(adapter);
3545                 adapter->rfd_ring = rfd_new;
3546                 adapter->rrd_ring = rrd_new;
3547                 adapter->tpd_ring = tpd_new;
3548                 adapter->ring_header = rhdr_new;
3549
3550                 err = atl1_up(adapter);
3551                 if (err)
3552                         return err;
3553         }
3554         return 0;
3555
3556 err_setup_ring:
3557         adapter->rfd_ring = rfd_old;
3558         adapter->rrd_ring = rrd_old;
3559         adapter->tpd_ring = tpd_old;
3560         adapter->ring_header = rhdr_old;
3561         atl1_up(adapter);
3562         return err;
3563 }
3564
3565 static void atl1_get_pauseparam(struct net_device *netdev,
3566         struct ethtool_pauseparam *epause)
3567 {
3568         struct atl1_adapter *adapter = netdev_priv(netdev);
3569         struct atl1_hw *hw = &adapter->hw;
3570
3571         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3572             hw->media_type == MEDIA_TYPE_1000M_FULL) {
3573                 epause->autoneg = AUTONEG_ENABLE;
3574         } else {
3575                 epause->autoneg = AUTONEG_DISABLE;
3576         }
3577         epause->rx_pause = 1;
3578         epause->tx_pause = 1;
3579 }
3580
3581 static int atl1_set_pauseparam(struct net_device *netdev,
3582         struct ethtool_pauseparam *epause)
3583 {
3584         struct atl1_adapter *adapter = netdev_priv(netdev);
3585         struct atl1_hw *hw = &adapter->hw;
3586
3587         if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3588             hw->media_type == MEDIA_TYPE_1000M_FULL) {
3589                 epause->autoneg = AUTONEG_ENABLE;
3590         } else {
3591                 epause->autoneg = AUTONEG_DISABLE;
3592         }
3593
3594         epause->rx_pause = 1;
3595         epause->tx_pause = 1;
3596
3597         return 0;
3598 }
3599
3600 /* FIXME: is this right? -- CHS */
3601 static u32 atl1_get_rx_csum(struct net_device *netdev)
3602 {
3603         return 1;
3604 }
3605
3606 static void atl1_get_strings(struct net_device *netdev, u32 stringset,
3607         u8 *data)
3608 {
3609         u8 *p = data;
3610         int i;
3611
3612         switch (stringset) {
3613         case ETH_SS_STATS:
3614                 for (i = 0; i < ARRAY_SIZE(atl1_gstrings_stats); i++) {
3615                         memcpy(p, atl1_gstrings_stats[i].stat_string,
3616                                 ETH_GSTRING_LEN);
3617                         p += ETH_GSTRING_LEN;
3618                 }
3619                 break;
3620         }
3621 }
3622
3623 static int atl1_nway_reset(struct net_device *netdev)
3624 {
3625         struct atl1_adapter *adapter = netdev_priv(netdev);
3626         struct atl1_hw *hw = &adapter->hw;
3627
3628         if (netif_running(netdev)) {
3629                 u16 phy_data;
3630                 atl1_down(adapter);
3631
3632                 if (hw->media_type == MEDIA_TYPE_AUTO_SENSOR ||
3633                         hw->media_type == MEDIA_TYPE_1000M_FULL) {
3634                         phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN;
3635                 } else {
3636                         switch (hw->media_type) {
3637                         case MEDIA_TYPE_100M_FULL:
3638                                 phy_data = MII_CR_FULL_DUPLEX |
3639                                         MII_CR_SPEED_100 | MII_CR_RESET;
3640                                 break;
3641                         case MEDIA_TYPE_100M_HALF:
3642                                 phy_data = MII_CR_SPEED_100 | MII_CR_RESET;
3643                                 break;
3644                         case MEDIA_TYPE_10M_FULL:
3645                                 phy_data = MII_CR_FULL_DUPLEX |
3646                                         MII_CR_SPEED_10 | MII_CR_RESET;
3647                                 break;
3648                         default:
3649                                 /* MEDIA_TYPE_10M_HALF */
3650                                 phy_data = MII_CR_SPEED_10 | MII_CR_RESET;
3651                         }
3652                 }
3653                 atl1_write_phy_reg(hw, MII_BMCR, phy_data);
3654                 atl1_up(adapter);
3655         }
3656         return 0;
3657 }
3658
3659 const struct ethtool_ops atl1_ethtool_ops = {
3660         .get_settings           = atl1_get_settings,
3661         .set_settings           = atl1_set_settings,
3662         .get_drvinfo            = atl1_get_drvinfo,
3663         .get_wol                = atl1_get_wol,
3664         .set_wol                = atl1_set_wol,
3665         .get_msglevel           = atl1_get_msglevel,
3666         .set_msglevel           = atl1_set_msglevel,
3667         .get_regs_len           = atl1_get_regs_len,
3668         .get_regs               = atl1_get_regs,
3669         .get_ringparam          = atl1_get_ringparam,
3670         .set_ringparam          = atl1_set_ringparam,
3671         .get_pauseparam         = atl1_get_pauseparam,
3672         .set_pauseparam         = atl1_set_pauseparam,
3673         .get_rx_csum            = atl1_get_rx_csum,
3674         .set_tx_csum            = ethtool_op_set_tx_hw_csum,
3675         .get_link               = ethtool_op_get_link,
3676         .set_sg                 = ethtool_op_set_sg,
3677         .get_strings            = atl1_get_strings,
3678         .nway_reset             = atl1_nway_reset,
3679         .get_ethtool_stats      = atl1_get_ethtool_stats,
3680         .get_sset_count         = atl1_get_sset_count,
3681         .set_tso                = ethtool_op_set_tso,
3682 };