drivers/net/e1000.c

   1 /**************************************************************************
   2 Intel Pro 1000 for ppcboot/das-u-boot
   3 Drivers are port from Intel's Linux driver e1000-4.3.15
   4 and from Etherboot pro 1000 driver by mrakes at vivato dot net
   5 tested on both gig copper and gig fiber boards
   6 ***************************************************************************/
   7 /*******************************************************************************
   8
   9
  10   Copyright(c) 1999 - 2002 Intel Corporation. All rights reserved.
  11
  12   This program is free software; you can redistribute it and/or modify it
  13   under the terms of the GNU General Public License as published by the Free
  14   Software Foundation; either version 2 of the License, or (at your option)
  15   any later version.
  16
  17   This program is distributed in the hope that it will be useful, but WITHOUT
  18   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  19   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  20   more details.
  21
  22   You should have received a copy of the GNU General Public License along with
  23   this program; if not, write to the Free Software Foundation, Inc., 59
  24   Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  25
  26   The full GNU General Public License is included in this distribution in the
  27   file called LICENSE.
  28
  29   Contact Information:
  30   Linux NICS <linux.nics@intel.com>
  31   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  32
  33 *******************************************************************************/
  34 /*
  35  *  Copyright (C) Archway Digital Solutions.
  36  *
  37  *  written by Chrsitopher Li <cli at arcyway dot com> or <chrisl at gnuchina dot org>
  38  *  2/9/2002
  39  *
  40  *  Copyright (C) Linux Networx.
  41  *  Massive upgrade to work with the new intel gigabit NICs.
  42  *  <ebiederman at lnxi dot com>
  43  *
  44  *  Copyright 2011 Freescale Semiconductor, Inc.
  45  */
  46
  47 #include "e1000.h"
  48
  49 #define TOUT_LOOP   100000
  50
  51 #define virt_to_bus(devno, v)   pci_virt_to_mem(devno, (void *) (v))
  52 #define bus_to_phys(devno, a)   pci_mem_to_phys(devno, a)
  53
  54 #define E1000_DEFAULT_PCI_PBA   0x00000030
  55 #define E1000_DEFAULT_PCIE_PBA  0x000a0026
  56
  57 /* NIC specific static variables go here */
  58
  59 static char tx_pool[128 + 16];
  60 static char rx_pool[128 + 16];
  61 static char packet[2096];
  62
  63 static struct e1000_tx_desc *tx_base;
  64 static struct e1000_rx_desc *rx_base;
  65
  66 static int tx_tail;
  67 static int rx_tail, rx_last;
  68
  69 static struct pci_device_id e1000_supported[] = {
  70         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82542},
  71         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82543GC_FIBER},
  72         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82543GC_COPPER},
  73         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544EI_COPPER},
  74         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544EI_FIBER},
  75         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544GC_COPPER},
  76         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544GC_LOM},
  77         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82540EM},
  78         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82545EM_COPPER},
  79         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82545GM_COPPER},
  80         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546EB_COPPER},
  81         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82545EM_FIBER},
  82         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546EB_FIBER},
  83         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546GB_COPPER},
  84         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82540EM_LOM},
  85         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82541ER},
  86         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82541GI_LF},
  87         /* E1000 PCIe card */
  88         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_COPPER},
  89         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_FIBER      },
  90         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_SERDES     },
  91         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_QUAD_COPPER},
  92         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571PT_QUAD_COPPER},
  93         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_QUAD_FIBER},
  94         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_QUAD_COPPER_LOWPROFILE},
  95         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_SERDES_DUAL},
  96         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_SERDES_QUAD},
  97         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI_COPPER},
  98         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI_FIBER},
  99         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI_SERDES},
 100         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI},
 101         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82573E},
 102         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82573E_IAMT},
 103         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82573L},
 104         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82574L},
 105         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546GB_QUAD_COPPER_KSP3},
 106         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_COPPER_DPT},
 107         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_SERDES_DPT},
 108         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_COPPER_SPT},
 109         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_SERDES_SPT},
 110         {}
 111 };
 112
 113 /* Function forward declarations */
 114 static int e1000_setup_link(struct eth_device *nic);
 115 static int e1000_setup_fiber_link(struct eth_device *nic);
 116 static int e1000_setup_copper_link(struct eth_device *nic);
 117 static int e1000_phy_setup_autoneg(struct e1000_hw *hw);
 118 static void e1000_config_collision_dist(struct e1000_hw *hw);
 119 static int e1000_config_mac_to_phy(struct e1000_hw *hw);
 120 static int e1000_config_fc_after_link_up(struct e1000_hw *hw);
 121 static int e1000_check_for_link(struct eth_device *nic);
 122 static int e1000_wait_autoneg(struct e1000_hw *hw);
 123 static int e1000_get_speed_and_duplex(struct e1000_hw *hw, uint16_t * speed,
 124                                        uint16_t * duplex);
 125 static int e1000_read_phy_reg(struct e1000_hw *hw, uint32_t reg_addr,
 126                               uint16_t * phy_data);
 127 static int e1000_write_phy_reg(struct e1000_hw *hw, uint32_t reg_addr,
 128                                uint16_t phy_data);
 129 static int32_t e1000_phy_hw_reset(struct e1000_hw *hw);
 130 static int e1000_phy_reset(struct e1000_hw *hw);
 131 static int e1000_detect_gig_phy(struct e1000_hw *hw);
 132 static void e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw);
 133 static void e1000_set_media_type(struct e1000_hw *hw);
 134
 135 static int32_t e1000_swfw_sync_acquire(struct e1000_hw *hw, uint16_t mask);
 136 static int32_t e1000_check_phy_reset_block(struct e1000_hw *hw);
 137
 138 static int32_t e1000_read_eeprom(struct e1000_hw *hw, uint16_t offset,
 139                 uint16_t words,
 140                 uint16_t *data);
 141 /******************************************************************************
 142  * Raises the EEPROM's clock input.
 143  *
 144  * hw - Struct containing variables accessed by shared code
 145  * eecd - EECD's current value
 146  *****************************************************************************/
 147 void e1000_raise_ee_clk(struct e1000_hw *hw, uint32_t * eecd)
 148 {
 149         /* Raise the clock input to the EEPROM (by setting the SK bit), and then
 150          * wait 50 microseconds.
 151          */
 152         *eecd = *eecd | E1000_EECD_SK;
 153         E1000_WRITE_REG(hw, EECD, *eecd);
 154         E1000_WRITE_FLUSH(hw);
 155         udelay(50);
 156 }
 157
 158 /******************************************************************************
 159  * Lowers the EEPROM's clock input.
 160  *
 161  * hw - Struct containing variables accessed by shared code
 162  * eecd - EECD's current value
 163  *****************************************************************************/
 164 void e1000_lower_ee_clk(struct e1000_hw *hw, uint32_t * eecd)
 165 {
 166         /* Lower the clock input to the EEPROM (by clearing the SK bit), and then
 167          * wait 50 microseconds.
 168          */
 169         *eecd = *eecd & ~E1000_EECD_SK;
 170         E1000_WRITE_REG(hw, EECD, *eecd);
 171         E1000_WRITE_FLUSH(hw);
 172         udelay(50);
 173 }
 174
 175 /******************************************************************************
 176  * Shift data bits out to the EEPROM.
 177  *
 178  * hw - Struct containing variables accessed by shared code
 179  * data - data to send to the EEPROM
 180  * count - number of bits to shift out
 181  *****************************************************************************/
 182 static void
 183 e1000_shift_out_ee_bits(struct e1000_hw *hw, uint16_t data, uint16_t count)
 184 {
 185         uint32_t eecd;
 186         uint32_t mask;
 187
 188         /* We need to shift "count" bits out to the EEPROM. So, value in the
 189          * "data" parameter will be shifted out to the EEPROM one bit at a time.
 190          * In order to do this, "data" must be broken down into bits.
 191          */
 192         mask = 0x01 << (count - 1);
 193         eecd = E1000_READ_REG(hw, EECD);
 194         eecd &= ~(E1000_EECD_DO | E1000_EECD_DI);
 195         do {
 196                 /* A "1" is shifted out to the EEPROM by setting bit "DI" to a "1",
 197                  * and then raising and then lowering the clock (the SK bit controls
 198                  * the clock input to the EEPROM).  A "0" is shifted out to the EEPROM
 199                  * by setting "DI" to "0" and then raising and then lowering the clock.
 200                  */
 201                 eecd &= ~E1000_EECD_DI;
 202
 203                 if (data & mask)
 204                         eecd |= E1000_EECD_DI;
 205
 206                 E1000_WRITE_REG(hw, EECD, eecd);
 207                 E1000_WRITE_FLUSH(hw);
 208
 209                 udelay(50);
 210
 211                 e1000_raise_ee_clk(hw, &eecd);
 212                 e1000_lower_ee_clk(hw, &eecd);
 213
 214                 mask = mask >> 1;
 215
 216         } while (mask);
 217
 218         /* We leave the "DI" bit set to "0" when we leave this routine. */
 219         eecd &= ~E1000_EECD_DI;
 220         E1000_WRITE_REG(hw, EECD, eecd);
 221 }
 222
 223 /******************************************************************************
 224  * Shift data bits in from the EEPROM
 225  *
 226  * hw - Struct containing variables accessed by shared code
 227  *****************************************************************************/
 228 static uint16_t
 229 e1000_shift_in_ee_bits(struct e1000_hw *hw, uint16_t count)
 230 {
 231         uint32_t eecd;
 232         uint32_t i;
 233         uint16_t data;
 234
 235         /* In order to read a register from the EEPROM, we need to shift 'count'
 236          * bits in from the EEPROM. Bits are "shifted in" by raising the clock
 237          * input to the EEPROM (setting the SK bit), and then reading the
 238          * value of the "DO" bit.  During this "shifting in" process the
 239          * "DI" bit should always be clear.
 240          */
 241
 242         eecd = E1000_READ_REG(hw, EECD);
 243
 244         eecd &= ~(E1000_EECD_DO | E1000_EECD_DI);
 245         data = 0;
 246
 247         for (i = 0; i < count; i++) {
 248                 data = data << 1;
 249                 e1000_raise_ee_clk(hw, &eecd);
 250
 251                 eecd = E1000_READ_REG(hw, EECD);
 252
 253                 eecd &= ~(E1000_EECD_DI);
 254                 if (eecd & E1000_EECD_DO)
 255                         data |= 1;
 256
 257                 e1000_lower_ee_clk(hw, &eecd);
 258         }
 259
 260         return data;
 261 }
 262
 263 /******************************************************************************
 264  * Returns EEPROM to a "standby" state
 265  *
 266  * hw - Struct containing variables accessed by shared code
 267  *****************************************************************************/
 268 void e1000_standby_eeprom(struct e1000_hw *hw)
 269 {
 270         struct e1000_eeprom_info *eeprom = &hw->eeprom;
 271         uint32_t eecd;
 272
 273         eecd = E1000_READ_REG(hw, EECD);
 274
 275         if (eeprom->type == e1000_eeprom_microwire) {
 276                 eecd &= ~(E1000_EECD_CS | E1000_EECD_SK);
 277                 E1000_WRITE_REG(hw, EECD, eecd);
 278                 E1000_WRITE_FLUSH(hw);
 279                 udelay(eeprom->delay_usec);
 280
 281                 /* Clock high */
 282                 eecd |= E1000_EECD_SK;
 283                 E1000_WRITE_REG(hw, EECD, eecd);
 284                 E1000_WRITE_FLUSH(hw);
 285                 udelay(eeprom->delay_usec);
 286
 287                 /* Select EEPROM */
 288                 eecd |= E1000_EECD_CS;
 289                 E1000_WRITE_REG(hw, EECD, eecd);
 290                 E1000_WRITE_FLUSH(hw);
 291                 udelay(eeprom->delay_usec);
 292
 293                 /* Clock low */
 294                 eecd &= ~E1000_EECD_SK;
 295                 E1000_WRITE_REG(hw, EECD, eecd);
 296                 E1000_WRITE_FLUSH(hw);
 297                 udelay(eeprom->delay_usec);
 298         } else if (eeprom->type == e1000_eeprom_spi) {
 299                 /* Toggle CS to flush commands */
 300                 eecd |= E1000_EECD_CS;
 301                 E1000_WRITE_REG(hw, EECD, eecd);
 302                 E1000_WRITE_FLUSH(hw);
 303                 udelay(eeprom->delay_usec);
 304                 eecd &= ~E1000_EECD_CS;
 305                 E1000_WRITE_REG(hw, EECD, eecd);
 306                 E1000_WRITE_FLUSH(hw);
 307                 udelay(eeprom->delay_usec);
 308         }
 309 }
 310
 311 /***************************************************************************
 312 * Description:     Determines if the onboard NVM is FLASH or EEPROM.
 313 *
 314 * hw - Struct containing variables accessed by shared code
 315 ****************************************************************************/
 316 static bool e1000_is_onboard_nvm_eeprom(struct e1000_hw *hw)
 317 {
 318         uint32_t eecd = 0;
 319
 320         DEBUGFUNC();
 321
 322         if (hw->mac_type == e1000_ich8lan)
 323                 return false;
 324
 325         if (hw->mac_type == e1000_82573 || hw->mac_type == e1000_82574) {
 326                 eecd = E1000_READ_REG(hw, EECD);
 327
 328                 /* Isolate bits 15 & 16 */
 329                 eecd = ((eecd >> 15) & 0x03);
 330
 331                 /* If both bits are set, device is Flash type */
 332                 if (eecd == 0x03)
 333                         return false;
 334         }
 335         return true;
 336 }
 337
 338 /******************************************************************************
 339  * Prepares EEPROM for access
 340  *
 341  * hw - Struct containing variables accessed by shared code
 342  *
 343  * Lowers EEPROM clock. Clears input pin. Sets the chip select pin. This
 344  * function should be called before issuing a command to the EEPROM.
 345  *****************************************************************************/
 346 int32_t e1000_acquire_eeprom(struct e1000_hw *hw)
 347 {
 348         struct e1000_eeprom_info *eeprom = &hw->eeprom;
 349         uint32_t eecd, i = 0;
 350
 351         DEBUGFUNC();
 352
 353         if (e1000_swfw_sync_acquire(hw, E1000_SWFW_EEP_SM))
 354                 return -E1000_ERR_SWFW_SYNC;
 355         eecd = E1000_READ_REG(hw, EECD);
 356
 357         if (hw->mac_type != e1000_82573 || hw->mac_type != e1000_82574) {
 358                 /* Request EEPROM Access */
 359                 if (hw->mac_type > e1000_82544) {
 360                         eecd |= E1000_EECD_REQ;
 361                         E1000_WRITE_REG(hw, EECD, eecd);
 362                         eecd = E1000_READ_REG(hw, EECD);
 363                         while ((!(eecd & E1000_EECD_GNT)) &&
 364                                 (i < E1000_EEPROM_GRANT_ATTEMPTS)) {
 365                                 i++;
 366                                 udelay(5);
 367                                 eecd = E1000_READ_REG(hw, EECD);
 368                         }
 369                         if (!(eecd & E1000_EECD_GNT)) {
 370                                 eecd &= ~E1000_EECD_REQ;
 371                                 E1000_WRITE_REG(hw, EECD, eecd);
 372                                 DEBUGOUT("Could not acquire EEPROM grant\n");
 373                                 return -E1000_ERR_EEPROM;
 374                         }
 375                 }
 376         }
 377
 378         /* Setup EEPROM for Read/Write */
 379
 380         if (eeprom->type == e1000_eeprom_microwire) {
 381                 /* Clear SK and DI */
 382                 eecd &= ~(E1000_EECD_DI | E1000_EECD_SK);
 383                 E1000_WRITE_REG(hw, EECD, eecd);
 384
 385                 /* Set CS */
 386                 eecd |= E1000_EECD_CS;
 387                 E1000_WRITE_REG(hw, EECD, eecd);
 388         } else if (eeprom->type == e1000_eeprom_spi) {
 389                 /* Clear SK and CS */
 390                 eecd &= ~(E1000_EECD_CS | E1000_EECD_SK);
 391                 E1000_WRITE_REG(hw, EECD, eecd);
 392                 udelay(1);
 393         }
 394
 395         return E1000_SUCCESS;
 396 }
 397
 398 /******************************************************************************
 399  * Sets up eeprom variables in the hw struct.  Must be called after mac_type
 400  * is configured.  Additionally, if this is ICH8, the flash controller GbE
 401  * registers must be mapped, or this will crash.
 402  *
 403  * hw - Struct containing variables accessed by shared code
 404  *****************************************************************************/
 405 static int32_t e1000_init_eeprom_params(struct e1000_hw *hw)
 406 {
 407         struct e1000_eeprom_info *eeprom = &hw->eeprom;
 408         uint32_t eecd = E1000_READ_REG(hw, EECD);
 409         int32_t ret_val = E1000_SUCCESS;
 410         uint16_t eeprom_size;
 411
 412         DEBUGFUNC();
 413
 414         switch (hw->mac_type) {
 415         case e1000_82542_rev2_0:
 416         case e1000_82542_rev2_1:
 417         case e1000_82543:
 418         case e1000_82544:
 419                 eeprom->type = e1000_eeprom_microwire;
 420                 eeprom->word_size = 64;
 421                 eeprom->opcode_bits = 3;
 422                 eeprom->address_bits = 6;
 423                 eeprom->delay_usec = 50;
 424                 eeprom->use_eerd = false;
 425                 eeprom->use_eewr = false;
 426         break;
 427         case e1000_82540:
 428         case e1000_82545:
 429         case e1000_82545_rev_3:
 430         case e1000_82546:
 431         case e1000_82546_rev_3:
 432                 eeprom->type = e1000_eeprom_microwire;
 433                 eeprom->opcode_bits = 3;
 434                 eeprom->delay_usec = 50;
 435                 if (eecd & E1000_EECD_SIZE) {
 436                         eeprom->word_size = 256;
 437                         eeprom->address_bits = 8;
 438                 } else {
 439                         eeprom->word_size = 64;
 440                         eeprom->address_bits = 6;
 441                 }
 442                 eeprom->use_eerd = false;
 443                 eeprom->use_eewr = false;
 444                 break;
 445         case e1000_82541:
 446         case e1000_82541_rev_2:
 447         case e1000_82547:
 448         case e1000_82547_rev_2:
 449                 if (eecd & E1000_EECD_TYPE) {
 450                         eeprom->type = e1000_eeprom_spi;
 451                         eeprom->opcode_bits = 8;
 452                         eeprom->delay_usec = 1;
 453                         if (eecd & E1000_EECD_ADDR_BITS) {
 454                                 eeprom->page_size = 32;
 455                                 eeprom->address_bits = 16;
 456                         } else {
 457                                 eeprom->page_size = 8;
 458                                 eeprom->address_bits = 8;
 459                         }
 460                 } else {
 461                         eeprom->type = e1000_eeprom_microwire;
 462                         eeprom->opcode_bits = 3;
 463                         eeprom->delay_usec = 50;
 464                         if (eecd & E1000_EECD_ADDR_BITS) {
 465                                 eeprom->word_size = 256;
 466                                 eeprom->address_bits = 8;
 467                         } else {
 468                                 eeprom->word_size = 64;
 469                                 eeprom->address_bits = 6;
 470                         }
 471                 }
 472                 eeprom->use_eerd = false;
 473                 eeprom->use_eewr = false;
 474                 break;
 475         case e1000_82571:
 476         case e1000_82572:
 477                 eeprom->type = e1000_eeprom_spi;
 478                 eeprom->opcode_bits = 8;
 479                 eeprom->delay_usec = 1;
 480                 if (eecd & E1000_EECD_ADDR_BITS) {
 481                         eeprom->page_size = 32;
 482                         eeprom->address_bits = 16;
 483                 } else {
 484                         eeprom->page_size = 8;
 485                         eeprom->address_bits = 8;
 486                 }
 487                 eeprom->use_eerd = false;
 488                 eeprom->use_eewr = false;
 489                 break;
 490         case e1000_82573:
 491         case e1000_82574:
 492                 eeprom->type = e1000_eeprom_spi;
 493                 eeprom->opcode_bits = 8;
 494                 eeprom->delay_usec = 1;
 495                 if (eecd & E1000_EECD_ADDR_BITS) {
 496                         eeprom->page_size = 32;
 497                         eeprom->address_bits = 16;
 498                 } else {
 499                         eeprom->page_size = 8;
 500                         eeprom->address_bits = 8;
 501                 }
 502                 eeprom->use_eerd = true;
 503                 eeprom->use_eewr = true;
 504                 if (e1000_is_onboard_nvm_eeprom(hw) == false) {
 505                         eeprom->type = e1000_eeprom_flash;
 506                         eeprom->word_size = 2048;
 507
 508                 /* Ensure that the Autonomous FLASH update bit is cleared due to
 509                  * Flash update issue on parts which use a FLASH for NVM. */
 510                         eecd &= ~E1000_EECD_AUPDEN;
 511                         E1000_WRITE_REG(hw, EECD, eecd);
 512                 }
 513                 break;
 514         case e1000_80003es2lan:
 515                 eeprom->type = e1000_eeprom_spi;
 516                 eeprom->opcode_bits = 8;
 517                 eeprom->delay_usec = 1;
 518                 if (eecd & E1000_EECD_ADDR_BITS) {
 519                         eeprom->page_size = 32;
 520                         eeprom->address_bits = 16;
 521                 } else {
 522                         eeprom->page_size = 8;
 523                         eeprom->address_bits = 8;
 524                 }
 525                 eeprom->use_eerd = true;
 526                 eeprom->use_eewr = false;
 527                 break;
 528
 529         /* ich8lan does not support currently. if needed, please
 530          * add corresponding code and functions.
 531          */
 532 #if 0
 533         case e1000_ich8lan:
 534                 {
 535                 int32_t  i = 0;
 536
 537                 eeprom->type = e1000_eeprom_ich8;
 538                 eeprom->use_eerd = false;
 539                 eeprom->use_eewr = false;
 540                 eeprom->word_size = E1000_SHADOW_RAM_WORDS;
 541                 uint32_t flash_size = E1000_READ_ICH_FLASH_REG(hw,
 542                                 ICH_FLASH_GFPREG);
 543                 /* Zero the shadow RAM structure. But don't load it from NVM
 544                  * so as to save time for driver init */
 545                 if (hw->eeprom_shadow_ram != NULL) {
 546                         for (i = 0; i < E1000_SHADOW_RAM_WORDS; i++) {
 547                                 hw->eeprom_shadow_ram[i].modified = false;
 548                                 hw->eeprom_shadow_ram[i].eeprom_word = 0xFFFF;
 549                         }
 550                 }
 551
 552                 hw->flash_base_addr = (flash_size & ICH_GFPREG_BASE_MASK) *
 553                                 ICH_FLASH_SECTOR_SIZE;
 554
 555                 hw->flash_bank_size = ((flash_size >> 16)
 556                                 & ICH_GFPREG_BASE_MASK) + 1;
 557                 hw->flash_bank_size -= (flash_size & ICH_GFPREG_BASE_MASK);
 558
 559                 hw->flash_bank_size *= ICH_FLASH_SECTOR_SIZE;
 560
 561                 hw->flash_bank_size /= 2 * sizeof(uint16_t);
 562                 break;
 563                 }
 564 #endif
 565         default:
 566                 break;
 567         }
 568
 569         if (eeprom->type == e1000_eeprom_spi) {
 570                 /* eeprom_size will be an enum [0..8] that maps
 571                  * to eeprom sizes 128B to
 572                  * 32KB (incremented by powers of 2).
 573                  */
 574                 if (hw->mac_type <= e1000_82547_rev_2) {
 575                         /* Set to default value for initial eeprom read. */
 576                         eeprom->word_size = 64;
 577                         ret_val = e1000_read_eeprom(hw, EEPROM_CFG, 1,
 578                                         &eeprom_size);
 579                         if (ret_val)
 580                                 return ret_val;
 581                         eeprom_size = (eeprom_size & EEPROM_SIZE_MASK)
 582                                 >> EEPROM_SIZE_SHIFT;
 583                         /* 256B eeprom size was not supported in earlier
 584                          * hardware, so we bump eeprom_size up one to
 585                          * ensure that "1" (which maps to 256B) is never
 586                          * the result used in the shifting logic below. */
 587                         if (eeprom_size)
 588                                 eeprom_size++;
 589                 } else {
 590                         eeprom_size = (uint16_t)((eecd &
 591                                 E1000_EECD_SIZE_EX_MASK) >>
 592                                 E1000_EECD_SIZE_EX_SHIFT);
 593                 }
 594
 595                 eeprom->word_size = 1 << (eeprom_size + EEPROM_WORD_SIZE_SHIFT);
 596         }
 597         return ret_val;
 598 }
 599
 600 /******************************************************************************
 601  * Polls the status bit (bit 1) of the EERD to determine when the read is done.
 602  *
 603  * hw - Struct containing variables accessed by shared code
 604  *****************************************************************************/
 605 static int32_t
 606 e1000_poll_eerd_eewr_done(struct e1000_hw *hw, int eerd)
 607 {
 608         uint32_t attempts = 100000;
 609         uint32_t i, reg = 0;
 610         int32_t done = E1000_ERR_EEPROM;
 611
 612         for (i = 0; i < attempts; i++) {
 613                 if (eerd == E1000_EEPROM_POLL_READ)
 614                         reg = E1000_READ_REG(hw, EERD);
 615                 else
 616                         reg = E1000_READ_REG(hw, EEWR);
 617
 618                 if (reg & E1000_EEPROM_RW_REG_DONE) {
 619                         done = E1000_SUCCESS;
 620                         break;
 621                 }
 622                 udelay(5);
 623         }
 624
 625         return done;
 626 }
 627
 628 /******************************************************************************
 629  * Reads a 16 bit word from the EEPROM using the EERD register.
 630  *
 631  * hw - Struct containing variables accessed by shared code
 632  * offset - offset of  word in the EEPROM to read
 633  * data - word read from the EEPROM
 634  * words - number of words to read
 635  *****************************************************************************/
 636 static int32_t
 637 e1000_read_eeprom_eerd(struct e1000_hw *hw,
 638                         uint16_t offset,
 639                         uint16_t words,
 640                         uint16_t *data)
 641 {
 642         uint32_t i, eerd = 0;
 643         int32_t error = 0;
 644
 645         for (i = 0; i < words; i++) {
 646                 eerd = ((offset+i) << E1000_EEPROM_RW_ADDR_SHIFT) +
 647                         E1000_EEPROM_RW_REG_START;
 648
 649                 E1000_WRITE_REG(hw, EERD, eerd);
 650                 error = e1000_poll_eerd_eewr_done(hw, E1000_EEPROM_POLL_READ);
 651
 652                 if (error)
 653                         break;
 654                 data[i] = (E1000_READ_REG(hw, EERD) >>
 655                                 E1000_EEPROM_RW_REG_DATA);
 656
 657         }
 658
 659         return error;
 660 }
 661
 662 void e1000_release_eeprom(struct e1000_hw *hw)
 663 {
 664         uint32_t eecd;
 665
 666         DEBUGFUNC();
 667
 668         eecd = E1000_READ_REG(hw, EECD);
 669
 670         if (hw->eeprom.type == e1000_eeprom_spi) {
 671                 eecd |= E1000_EECD_CS;  /* Pull CS high */
 672                 eecd &= ~E1000_EECD_SK; /* Lower SCK */
 673
 674                 E1000_WRITE_REG(hw, EECD, eecd);
 675
 676                 udelay(hw->eeprom.delay_usec);
 677         } else if (hw->eeprom.type == e1000_eeprom_microwire) {
 678                 /* cleanup eeprom */
 679
 680                 /* CS on Microwire is active-high */
 681                 eecd &= ~(E1000_EECD_CS | E1000_EECD_DI);
 682
 683                 E1000_WRITE_REG(hw, EECD, eecd);
 684
 685                 /* Rising edge of clock */
 686                 eecd |= E1000_EECD_SK;
 687                 E1000_WRITE_REG(hw, EECD, eecd);
 688                 E1000_WRITE_FLUSH(hw);
 689                 udelay(hw->eeprom.delay_usec);
 690
 691                 /* Falling edge of clock */
 692                 eecd &= ~E1000_EECD_SK;
 693                 E1000_WRITE_REG(hw, EECD, eecd);
 694                 E1000_WRITE_FLUSH(hw);
 695                 udelay(hw->eeprom.delay_usec);
 696         }
 697
 698         /* Stop requesting EEPROM access */
 699         if (hw->mac_type > e1000_82544) {
 700                 eecd &= ~E1000_EECD_REQ;
 701                 E1000_WRITE_REG(hw, EECD, eecd);
 702         }
 703 }
 704 /******************************************************************************
 705  * Reads a 16 bit word from the EEPROM.
 706  *
 707  * hw - Struct containing variables accessed by shared code
 708  *****************************************************************************/
 709 static int32_t
 710 e1000_spi_eeprom_ready(struct e1000_hw *hw)
 711 {
 712         uint16_t retry_count = 0;
 713         uint8_t spi_stat_reg;
 714
 715         DEBUGFUNC();
 716
 717         /* Read "Status Register" repeatedly until the LSB is cleared.  The
 718          * EEPROM will signal that the command has been completed by clearing
 719          * bit 0 of the internal status register.  If it's not cleared within
 720          * 5 milliseconds, then error out.
 721          */
 722         retry_count = 0;
 723         do {
 724                 e1000_shift_out_ee_bits(hw, EEPROM_RDSR_OPCODE_SPI,
 725                         hw->eeprom.opcode_bits);
 726                 spi_stat_reg = (uint8_t)e1000_shift_in_ee_bits(hw, 8);
 727                 if (!(spi_stat_reg & EEPROM_STATUS_RDY_SPI))
 728                         break;
 729
 730                 udelay(5);
 731                 retry_count += 5;
 732
 733                 e1000_standby_eeprom(hw);
 734         } while (retry_count < EEPROM_MAX_RETRY_SPI);
 735
 736         /* ATMEL SPI write time could vary from 0-20mSec on 3.3V devices (and
 737          * only 0-5mSec on 5V devices)
 738          */
 739         if (retry_count >= EEPROM_MAX_RETRY_SPI) {
 740                 DEBUGOUT("SPI EEPROM Status error\n");
 741                 return -E1000_ERR_EEPROM;
 742         }
 743
 744         return E1000_SUCCESS;
 745 }
 746
 747 /******************************************************************************
 748  * Reads a 16 bit word from the EEPROM.
 749  *
 750  * hw - Struct containing variables accessed by shared code
 751  * offset - offset of  word in the EEPROM to read
 752  * data - word read from the EEPROM
 753  *****************************************************************************/
 754 static int32_t
 755 e1000_read_eeprom(struct e1000_hw *hw, uint16_t offset,
 756                 uint16_t words, uint16_t *data)
 757 {
 758         struct e1000_eeprom_info *eeprom = &hw->eeprom;
 759         uint32_t i = 0;
 760
 761         DEBUGFUNC();
 762
 763         /* If eeprom is not yet detected, do so now */
 764         if (eeprom->word_size == 0)
 765                 e1000_init_eeprom_params(hw);
 766
 767         /* A check for invalid values:  offset too large, too many words,
 768          * and not enough words.
 769          */
 770         if ((offset >= eeprom->word_size) ||
 771                 (words > eeprom->word_size - offset) ||
 772                 (words == 0)) {
 773                 DEBUGOUT("\"words\" parameter out of bounds."
 774                         "Words = %d, size = %d\n", offset, eeprom->word_size);
 775                 return -E1000_ERR_EEPROM;
 776         }
 777
 778         /* EEPROM's that don't use EERD to read require us to bit-bang the SPI
 779          * directly. In this case, we need to acquire the EEPROM so that
 780          * FW or other port software does not interrupt.
 781          */
 782         if (e1000_is_onboard_nvm_eeprom(hw) == true &&
 783                 hw->eeprom.use_eerd == false) {
 784
 785                 /* Prepare the EEPROM for bit-bang reading */
 786                 if (e1000_acquire_eeprom(hw) != E1000_SUCCESS)
 787                         return -E1000_ERR_EEPROM;
 788         }
 789
 790         /* Eerd register EEPROM access requires no eeprom aquire/release */
 791         if (eeprom->use_eerd == true)
 792                 return e1000_read_eeprom_eerd(hw, offset, words, data);
 793
 794         /* ich8lan does not support currently. if needed, please
 795          * add corresponding code and functions.
 796          */
 797 #if 0
 798         /* ICH EEPROM access is done via the ICH flash controller */
 799         if (eeprom->type == e1000_eeprom_ich8)
 800                 return e1000_read_eeprom_ich8(hw, offset, words, data);
 801 #endif
 802         /* Set up the SPI or Microwire EEPROM for bit-bang reading.  We have
 803          * acquired the EEPROM at this point, so any returns should relase it */
 804         if (eeprom->type == e1000_eeprom_spi) {
 805                 uint16_t word_in;
 806                 uint8_t read_opcode = EEPROM_READ_OPCODE_SPI;
 807
 808                 if (e1000_spi_eeprom_ready(hw)) {
 809                         e1000_release_eeprom(hw);
 810                         return -E1000_ERR_EEPROM;
 811                 }
 812
 813                 e1000_standby_eeprom(hw);
 814
 815                 /* Some SPI eeproms use the 8th address bit embedded in
 816                  * the opcode */
 817                 if ((eeprom->address_bits == 8) && (offset >= 128))
 818                         read_opcode |= EEPROM_A8_OPCODE_SPI;
 819
 820                 /* Send the READ command (opcode + addr)  */
 821                 e1000_shift_out_ee_bits(hw, read_opcode, eeprom->opcode_bits);
 822                 e1000_shift_out_ee_bits(hw, (uint16_t)(offset*2),
 823                                 eeprom->address_bits);
 824
 825                 /* Read the data.  The address of the eeprom internally
 826                  * increments with each byte (spi) being read, saving on the
 827                  * overhead of eeprom setup and tear-down.  The address
 828                  * counter will roll over if reading beyond the size of
 829                  * the eeprom, thus allowing the entire memory to be read
 830                  * starting from any offset. */
 831                 for (i = 0; i < words; i++) {
 832                         word_in = e1000_shift_in_ee_bits(hw, 16);
 833                         data[i] = (word_in >> 8) | (word_in << 8);
 834                 }
 835         } else if (eeprom->type == e1000_eeprom_microwire) {
 836                 for (i = 0; i < words; i++) {
 837                         /* Send the READ command (opcode + addr)  */
 838                         e1000_shift_out_ee_bits(hw,
 839                                 EEPROM_READ_OPCODE_MICROWIRE,
 840                                 eeprom->opcode_bits);
 841                         e1000_shift_out_ee_bits(hw, (uint16_t)(offset + i),
 842                                 eeprom->address_bits);
 843
 844                         /* Read the data.  For microwire, each word requires
 845                          * the overhead of eeprom setup and tear-down. */
 846                         data[i] = e1000_shift_in_ee_bits(hw, 16);
 847                         e1000_standby_eeprom(hw);
 848                 }
 849         }
 850
 851         /* End this read operation */
 852         e1000_release_eeprom(hw);
 853
 854         return E1000_SUCCESS;
 855 }
 856
 857 /******************************************************************************
 858  * Verifies that the EEPROM has a valid checksum
 859  *
 860  * hw - Struct containing variables accessed by shared code
 861  *
 862  * Reads the first 64 16 bit words of the EEPROM and sums the values read.
 863  * If the the sum of the 64 16 bit words is 0xBABA, the EEPROM's checksum is
 864  * valid.
 865  *****************************************************************************/
 866 static int e1000_validate_eeprom_checksum(struct e1000_hw *hw)
 867 {
 868         uint16_t i, checksum, checksum_reg, *buf;
 869
 870         DEBUGFUNC();
 871
 872         /* Allocate a temporary buffer */
 873         buf = malloc(sizeof(buf[0]) * (EEPROM_CHECKSUM_REG + 1));
 874         if (!buf) {
 875                 E1000_ERR(hw->nic, "Unable to allocate EEPROM buffer!\n");
 876                 return -E1000_ERR_EEPROM;
 877         }
 878
 879         /* Read the EEPROM */
 880         if (e1000_read_eeprom(hw, 0, EEPROM_CHECKSUM_REG + 1, buf) < 0) {
 881                 E1000_ERR(hw->nic, "Unable to read EEPROM!\n");
 882                 return -E1000_ERR_EEPROM;
 883         }
 884
 885         /* Compute the checksum */
 886         checksum = 0;
 887         for (i = 0; i < EEPROM_CHECKSUM_REG; i++)
 888                 checksum += buf[i];
 889         checksum = ((uint16_t)EEPROM_SUM) - checksum;
 890         checksum_reg = buf[i];
 891
 892         /* Verify it! */
 893         if (checksum == checksum_reg)
 894                 return 0;
 895
 896         /* Hrm, verification failed, print an error */
 897         E1000_ERR(hw->nic, "EEPROM checksum is incorrect!\n");
 898         E1000_ERR(hw->nic, "  ...register was 0x%04hx, calculated 0x%04hx\n",
 899                         checksum_reg, checksum);
 900
 901         return -E1000_ERR_EEPROM;
 902 }
 903
 904 /*****************************************************************************
 905  * Set PHY to class A mode
 906  * Assumes the following operations will follow to enable the new class mode.
 907  *  1. Do a PHY soft reset
 908  *  2. Restart auto-negotiation or force link.
 909  *
 910  * hw - Struct containing variables accessed by shared code
 911  ****************************************************************************/
 912 static int32_t
 913 e1000_set_phy_mode(struct e1000_hw *hw)
 914 {
 915         int32_t ret_val;
 916         uint16_t eeprom_data;
 917
 918         DEBUGFUNC();
 919
 920         if ((hw->mac_type == e1000_82545_rev_3) &&
 921                 (hw->media_type == e1000_media_type_copper)) {
 922                 ret_val = e1000_read_eeprom(hw, EEPROM_PHY_CLASS_WORD,
 923                                 1, &eeprom_data);
 924                 if (ret_val)
 925                         return ret_val;
 926
 927                 if ((eeprom_data != EEPROM_RESERVED_WORD) &&
 928                         (eeprom_data & EEPROM_PHY_CLASS_A)) {
 929                         ret_val = e1000_write_phy_reg(hw,
 930                                         M88E1000_PHY_PAGE_SELECT, 0x000B);
 931                         if (ret_val)
 932                                 return ret_val;
 933                         ret_val = e1000_write_phy_reg(hw,
 934                                         M88E1000_PHY_GEN_CONTROL, 0x8104);
 935                         if (ret_val)
 936                                 return ret_val;
 937
 938                         hw->phy_reset_disable = false;
 939                 }
 940         }
 941
 942         return E1000_SUCCESS;
 943 }
 944
 945 /***************************************************************************
 946  *
 947  * Obtaining software semaphore bit (SMBI) before resetting PHY.
 948  *
 949  * hw: Struct containing variables accessed by shared code
 950  *
 951  * returns: - E1000_ERR_RESET if fail to obtain semaphore.
 952  *            E1000_SUCCESS at any other case.
 953  *
 954  ***************************************************************************/
 955 static int32_t
 956 e1000_get_software_semaphore(struct e1000_hw *hw)
 957 {
 958          int32_t timeout = hw->eeprom.word_size + 1;
 959          uint32_t swsm;
 960
 961         DEBUGFUNC();
 962
 963         if (hw->mac_type != e1000_80003es2lan)
 964                 return E1000_SUCCESS;
 965
 966         while (timeout) {
 967                 swsm = E1000_READ_REG(hw, SWSM);
 968                 /* If SMBI bit cleared, it is now set and we hold
 969                  * the semaphore */
 970                 if (!(swsm & E1000_SWSM_SMBI))
 971                         break;
 972                 mdelay(1);
 973                 timeout--;
 974         }
 975
 976         if (!timeout) {
 977                 DEBUGOUT("Driver can't access device - SMBI bit is set.\n");
 978                 return -E1000_ERR_RESET;
 979         }
 980
 981         return E1000_SUCCESS;
 982 }
 983
 984 /***************************************************************************
 985  * This function clears HW semaphore bits.
 986  *
 987  * hw: Struct containing variables accessed by shared code
 988  *
 989  * returns: - None.
 990  *
 991  ***************************************************************************/
 992 static void
 993 e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw)
 994 {
 995          uint32_t swsm;
 996
 997         DEBUGFUNC();
 998
 999         if (!hw->eeprom_semaphore_present)
1000                 return;
1001
1002         swsm = E1000_READ_REG(hw, SWSM);
1003         if (hw->mac_type == e1000_80003es2lan) {
1004                 /* Release both semaphores. */
1005                 swsm &= ~(E1000_SWSM_SMBI | E1000_SWSM_SWESMBI);
1006         } else
1007                 swsm &= ~(E1000_SWSM_SWESMBI);
1008         E1000_WRITE_REG(hw, SWSM, swsm);
1009 }
1010
1011 /***************************************************************************
1012  *
1013  * Using the combination of SMBI and SWESMBI semaphore bits when resetting
1014  * adapter or Eeprom access.
1015  *
1016  * hw: Struct containing variables accessed by shared code
1017  *
1018  * returns: - E1000_ERR_EEPROM if fail to access EEPROM.
1019  *            E1000_SUCCESS at any other case.
1020  *
1021  ***************************************************************************/
1022 static int32_t
1023 e1000_get_hw_eeprom_semaphore(struct e1000_hw *hw)
1024 {
1025         int32_t timeout;
1026         uint32_t swsm;
1027
1028         DEBUGFUNC();
1029
1030         if (!hw->eeprom_semaphore_present)
1031                 return E1000_SUCCESS;
1032
1033         if (hw->mac_type == e1000_80003es2lan) {
1034                 /* Get the SW semaphore. */
1035                 if (e1000_get_software_semaphore(hw) != E1000_SUCCESS)
1036                         return -E1000_ERR_EEPROM;
1037         }
1038
1039         /* Get the FW semaphore. */
1040         timeout = hw->eeprom.word_size + 1;
1041         while (timeout) {
1042                 swsm = E1000_READ_REG(hw, SWSM);
1043                 swsm |= E1000_SWSM_SWESMBI;
1044                 E1000_WRITE_REG(hw, SWSM, swsm);
1045                 /* if we managed to set the bit we got the semaphore. */
1046                 swsm = E1000_READ_REG(hw, SWSM);
1047                 if (swsm & E1000_SWSM_SWESMBI)
1048                         break;
1049
1050                 udelay(50);
1051                 timeout--;
1052         }
1053
1054         if (!timeout) {
1055                 /* Release semaphores */
1056                 e1000_put_hw_eeprom_semaphore(hw);
1057                 DEBUGOUT("Driver can't access the Eeprom - "
1058                                 "SWESMBI bit is set.\n");
1059                 return -E1000_ERR_EEPROM;
1060         }
1061
1062         return E1000_SUCCESS;
1063 }
1064
1065 static int32_t
1066 e1000_swfw_sync_acquire(struct e1000_hw *hw, uint16_t mask)
1067 {
1068         uint32_t swfw_sync = 0;
1069         uint32_t swmask = mask;
1070         uint32_t fwmask = mask << 16;
1071         int32_t timeout = 200;
1072
1073         DEBUGFUNC();
1074         while (timeout) {
1075                 if (e1000_get_hw_eeprom_semaphore(hw))
1076                         return -E1000_ERR_SWFW_SYNC;
1077
1078                 swfw_sync = E1000_READ_REG(hw, SW_FW_SYNC);
1079                 if (!(swfw_sync & (fwmask | swmask)))
1080                         break;
1081
1082                 /* firmware currently using resource (fwmask) */
1083                 /* or other software thread currently using resource (swmask) */
1084                 e1000_put_hw_eeprom_semaphore(hw);
1085                 mdelay(5);
1086                 timeout--;
1087         }
1088
1089         if (!timeout) {
1090                 DEBUGOUT("Driver can't access resource, SW_FW_SYNC timeout.\n");
1091                 return -E1000_ERR_SWFW_SYNC;
1092         }
1093
1094         swfw_sync |= swmask;
1095         E1000_WRITE_REG(hw, SW_FW_SYNC, swfw_sync);
1096
1097         e1000_put_hw_eeprom_semaphore(hw);
1098         return E1000_SUCCESS;
1099 }
1100
1101 static bool e1000_is_second_port(struct e1000_hw *hw)
1102 {
1103         switch (hw->mac_type) {
1104         case e1000_80003es2lan:
1105         case e1000_82546:
1106         case e1000_82571:
1107                 if (E1000_READ_REG(hw, STATUS) & E1000_STATUS_FUNC_1)
1108                         return true;
1109                 /* Fallthrough */
1110         default:
1111                 return false;
1112         }
1113 }
1114
1115 /******************************************************************************
1116  * Reads the adapter's MAC address from the EEPROM and inverts the LSB for the
1117  * second function of dual function devices
1118  *
1119  * nic - Struct containing variables accessed by shared code
1120  *****************************************************************************/
1121 static int
1122 e1000_read_mac_addr(struct eth_device *nic)
1123 {
1124         struct e1000_hw *hw = nic->priv;
1125         uint16_t offset;
1126         uint16_t eeprom_data;
1127         int i;
1128
1129         DEBUGFUNC();
1130
1131         for (i = 0; i < NODE_ADDRESS_SIZE; i += 2) {
1132                 offset = i >> 1;
1133                 if (e1000_read_eeprom(hw, offset, 1, &eeprom_data) < 0) {
1134                         DEBUGOUT("EEPROM Read Error\n");
1135                         return -E1000_ERR_EEPROM;
1136                 }
1137                 nic->enetaddr[i] = eeprom_data & 0xff;
1138                 nic->enetaddr[i + 1] = (eeprom_data >> 8) & 0xff;
1139         }
1140
1141         /* Invert the last bit if this is the second device */
1142         if (e1000_is_second_port(hw))
1143                 nic->enetaddr[5] ^= 1;
1144
1145 #ifdef CONFIG_E1000_FALLBACK_MAC
1146         if (!is_valid_ether_addr(nic->enetaddr)) {
1147                 unsigned char fb_mac[NODE_ADDRESS_SIZE] = CONFIG_E1000_FALLBACK_MAC;
1148
1149                 memcpy (nic->enetaddr, fb_mac, NODE_ADDRESS_SIZE);
1150         }
1151 #endif
1152         return 0;
1153 }
1154
1155 /******************************************************************************
1156  * Initializes receive address filters.
1157  *
1158  * hw - Struct containing variables accessed by shared code
1159  *
1160  * Places the MAC address in receive address register 0 and clears the rest
1161  * of the receive addresss registers. Clears the multicast table. Assumes
1162  * the receiver is in reset when the routine is called.
1163  *****************************************************************************/
1164 static void
1165 e1000_init_rx_addrs(struct eth_device *nic)
1166 {
1167         struct e1000_hw *hw = nic->priv;
1168         uint32_t i;
1169         uint32_t addr_low;
1170         uint32_t addr_high;
1171
1172         DEBUGFUNC();
1173
1174         /* Setup the receive address. */
1175         DEBUGOUT("Programming MAC Address into RAR[0]\n");
1176         addr_low = (nic->enetaddr[0] |
1177                     (nic->enetaddr[1] << 8) |
1178                     (nic->enetaddr[2] << 16) | (nic->enetaddr[3] << 24));
1179
1180         addr_high = (nic->enetaddr[4] | (nic->enetaddr[5] << 8) | E1000_RAH_AV);
1181
1182         E1000_WRITE_REG_ARRAY(hw, RA, 0, addr_low);
1183         E1000_WRITE_REG_ARRAY(hw, RA, 1, addr_high);
1184
1185         /* Zero out the other 15 receive addresses. */
1186         DEBUGOUT("Clearing RAR[1-15]\n");
1187         for (i = 1; i < E1000_RAR_ENTRIES; i++) {
1188                 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1), 0);
1189                 E1000_WRITE_REG_ARRAY(hw, RA, ((i << 1) + 1), 0);
1190         }
1191 }
1192
1193 /******************************************************************************
1194  * Clears the VLAN filer table
1195  *
1196  * hw - Struct containing variables accessed by shared code
1197  *****************************************************************************/
1198 static void
1199 e1000_clear_vfta(struct e1000_hw *hw)
1200 {
1201         uint32_t offset;
1202
1203         for (offset = 0; offset < E1000_VLAN_FILTER_TBL_SIZE; offset++)
1204                 E1000_WRITE_REG_ARRAY(hw, VFTA, offset, 0);
1205 }
1206
1207 /******************************************************************************
1208  * Set the mac type member in the hw struct.
1209  *
1210  * hw - Struct containing variables accessed by shared code
1211  *****************************************************************************/
1212 int32_t
1213 e1000_set_mac_type(struct e1000_hw *hw)
1214 {
1215         DEBUGFUNC();
1216
1217         switch (hw->device_id) {
1218         case E1000_DEV_ID_82542:
1219                 switch (hw->revision_id) {
1220                 case E1000_82542_2_0_REV_ID:
1221                         hw->mac_type = e1000_82542_rev2_0;
1222                         break;
1223                 case E1000_82542_2_1_REV_ID:
1224                         hw->mac_type = e1000_82542_rev2_1;
1225                         break;
1226                 default:
1227                         /* Invalid 82542 revision ID */
1228                         return -E1000_ERR_MAC_TYPE;
1229                 }
1230                 break;
1231         case E1000_DEV_ID_82543GC_FIBER:
1232         case E1000_DEV_ID_82543GC_COPPER:
1233                 hw->mac_type = e1000_82543;
1234                 break;
1235         case E1000_DEV_ID_82544EI_COPPER:
1236         case E1000_DEV_ID_82544EI_FIBER:
1237         case E1000_DEV_ID_82544GC_COPPER:
1238         case E1000_DEV_ID_82544GC_LOM:
1239                 hw->mac_type = e1000_82544;
1240                 break;
1241         case E1000_DEV_ID_82540EM:
1242         case E1000_DEV_ID_82540EM_LOM:
1243         case E1000_DEV_ID_82540EP:
1244         case E1000_DEV_ID_82540EP_LOM:
1245         case E1000_DEV_ID_82540EP_LP:
1246                 hw->mac_type = e1000_82540;
1247                 break;
1248         case E1000_DEV_ID_82545EM_COPPER:
1249         case E1000_DEV_ID_82545EM_FIBER:
1250                 hw->mac_type = e1000_82545;
1251                 break;
1252         case E1000_DEV_ID_82545GM_COPPER:
1253         case E1000_DEV_ID_82545GM_FIBER:
1254         case E1000_DEV_ID_82545GM_SERDES:
1255                 hw->mac_type = e1000_82545_rev_3;
1256                 break;
1257         case E1000_DEV_ID_82546EB_COPPER:
1258         case E1000_DEV_ID_82546EB_FIBER:
1259         case E1000_DEV_ID_82546EB_QUAD_COPPER:
1260                 hw->mac_type = e1000_82546;
1261                 break;
1262         case E1000_DEV_ID_82546GB_COPPER:
1263         case E1000_DEV_ID_82546GB_FIBER:
1264         case E1000_DEV_ID_82546GB_SERDES:
1265         case E1000_DEV_ID_82546GB_PCIE:
1266         case E1000_DEV_ID_82546GB_QUAD_COPPER:
1267         case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
1268                 hw->mac_type = e1000_82546_rev_3;
1269                 break;
1270         case E1000_DEV_ID_82541EI:
1271         case E1000_DEV_ID_82541EI_MOBILE:
1272         case E1000_DEV_ID_82541ER_LOM:
1273                 hw->mac_type = e1000_82541;
1274                 break;
1275         case E1000_DEV_ID_82541ER:
1276         case E1000_DEV_ID_82541GI:
1277         case E1000_DEV_ID_82541GI_LF:
1278         case E1000_DEV_ID_82541GI_MOBILE:
1279                 hw->mac_type = e1000_82541_rev_2;
1280                 break;
1281         case E1000_DEV_ID_82547EI:
1282         case E1000_DEV_ID_82547EI_MOBILE:
1283                 hw->mac_type = e1000_82547;
1284                 break;
1285         case E1000_DEV_ID_82547GI:
1286                 hw->mac_type = e1000_82547_rev_2;
1287                 break;
1288         case E1000_DEV_ID_82571EB_COPPER:
1289         case E1000_DEV_ID_82571EB_FIBER:
1290         case E1000_DEV_ID_82571EB_SERDES:
1291         case E1000_DEV_ID_82571EB_SERDES_DUAL:
1292         case E1000_DEV_ID_82571EB_SERDES_QUAD:
1293         case E1000_DEV_ID_82571EB_QUAD_COPPER:
1294         case E1000_DEV_ID_82571PT_QUAD_COPPER:
1295         case E1000_DEV_ID_82571EB_QUAD_FIBER:
1296         case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE:
1297                 hw->mac_type = e1000_82571;
1298                 break;
1299         case E1000_DEV_ID_82572EI_COPPER:
1300         case E1000_DEV_ID_82572EI_FIBER:
1301         case E1000_DEV_ID_82572EI_SERDES:
1302         case E1000_DEV_ID_82572EI:
1303                 hw->mac_type = e1000_82572;
1304                 break;
1305         case E1000_DEV_ID_82573E:
1306         case E1000_DEV_ID_82573E_IAMT:
1307         case E1000_DEV_ID_82573L:
1308                 hw->mac_type = e1000_82573;
1309                 break;
1310         case E1000_DEV_ID_82574L:
1311                 hw->mac_type = e1000_82574;
1312                 break;
1313         case E1000_DEV_ID_80003ES2LAN_COPPER_SPT:
1314         case E1000_DEV_ID_80003ES2LAN_SERDES_SPT:
1315         case E1000_DEV_ID_80003ES2LAN_COPPER_DPT:
1316         case E1000_DEV_ID_80003ES2LAN_SERDES_DPT:
1317                 hw->mac_type = e1000_80003es2lan;
1318                 break;
1319         case E1000_DEV_ID_ICH8_IGP_M_AMT:
1320         case E1000_DEV_ID_ICH8_IGP_AMT:
1321         case E1000_DEV_ID_ICH8_IGP_C:
1322         case E1000_DEV_ID_ICH8_IFE:
1323         case E1000_DEV_ID_ICH8_IFE_GT:
1324         case E1000_DEV_ID_ICH8_IFE_G:
1325         case E1000_DEV_ID_ICH8_IGP_M:
1326                 hw->mac_type = e1000_ich8lan;
1327                 break;
1328         default:
1329                 /* Should never have loaded on this device */
1330                 return -E1000_ERR_MAC_TYPE;
1331         }
1332         return E1000_SUCCESS;
1333 }
1334
1335 /******************************************************************************
1336  * Reset the transmit and receive units; mask and clear all interrupts.
1337  *
1338  * hw - Struct containing variables accessed by shared code
1339  *****************************************************************************/
1340 void
1341 e1000_reset_hw(struct e1000_hw *hw)
1342 {
1343         uint32_t ctrl;
1344         uint32_t ctrl_ext;
1345         uint32_t manc;
1346         uint32_t pba = 0;
1347
1348         DEBUGFUNC();
1349
1350         /* get the correct pba value for both PCI and PCIe*/
1351         if (hw->mac_type <  e1000_82571)
1352                 pba = E1000_DEFAULT_PCI_PBA;
1353         else
1354                 pba = E1000_DEFAULT_PCIE_PBA;
1355
1356         /* For 82542 (rev 2.0), disable MWI before issuing a device reset */
1357         if (hw->mac_type == e1000_82542_rev2_0) {
1358                 DEBUGOUT("Disabling MWI on 82542 rev 2.0\n");
1359                 pci_write_config_word(hw->pdev, PCI_COMMAND,
1360                                 hw->pci_cmd_word & ~PCI_COMMAND_INVALIDATE);
1361         }
1362
1363         /* Clear interrupt mask to stop board from generating interrupts */
1364         DEBUGOUT("Masking off all interrupts\n");
1365         E1000_WRITE_REG(hw, IMC, 0xffffffff);
1366
1367         /* Disable the Transmit and Receive units.  Then delay to allow
1368          * any pending transactions to complete before we hit the MAC with
1369          * the global reset.
1370          */
1371         E1000_WRITE_REG(hw, RCTL, 0);
1372         E1000_WRITE_REG(hw, TCTL, E1000_TCTL_PSP);
1373         E1000_WRITE_FLUSH(hw);
1374
1375         /* The tbi_compatibility_on Flag must be cleared when Rctl is cleared. */
1376         hw->tbi_compatibility_on = false;
1377
1378         /* Delay to allow any outstanding PCI transactions to complete before
1379          * resetting the device
1380          */
1381         mdelay(10);
1382
1383         /* Issue a global reset to the MAC.  This will reset the chip's
1384          * transmit, receive, DMA, and link units.  It will not effect
1385          * the current PCI configuration.  The global reset bit is self-
1386          * clearing, and should clear within a microsecond.
1387          */
1388         DEBUGOUT("Issuing a global reset to MAC\n");
1389         ctrl = E1000_READ_REG(hw, CTRL);
1390
1391         E1000_WRITE_REG(hw, CTRL, (ctrl | E1000_CTRL_RST));
1392
1393         /* Force a reload from the EEPROM if necessary */
1394         if (hw->mac_type < e1000_82540) {
1395                 /* Wait for reset to complete */
1396                 udelay(10);
1397                 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
1398                 ctrl_ext |= E1000_CTRL_EXT_EE_RST;
1399                 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
1400                 E1000_WRITE_FLUSH(hw);
1401                 /* Wait for EEPROM reload */
1402                 mdelay(2);
1403         } else {
1404                 /* Wait for EEPROM reload (it happens automatically) */
1405                 mdelay(4);
1406                 /* Dissable HW ARPs on ASF enabled adapters */
1407                 manc = E1000_READ_REG(hw, MANC);
1408                 manc &= ~(E1000_MANC_ARP_EN);
1409                 E1000_WRITE_REG(hw, MANC, manc);
1410         }
1411
1412         /* Clear interrupt mask to stop board from generating interrupts */
1413         DEBUGOUT("Masking off all interrupts\n");
1414         E1000_WRITE_REG(hw, IMC, 0xffffffff);
1415
1416         /* Clear any pending interrupt events. */
1417         E1000_READ_REG(hw, ICR);
1418
1419         /* If MWI was previously enabled, reenable it. */
1420         if (hw->mac_type == e1000_82542_rev2_0) {
1421                 pci_write_config_word(hw->pdev, PCI_COMMAND, hw->pci_cmd_word);
1422         }
1423         E1000_WRITE_REG(hw, PBA, pba);
1424 }
1425
1426 /******************************************************************************
1427  *
1428  * Initialize a number of hardware-dependent bits
1429  *
1430  * hw: Struct containing variables accessed by shared code
1431  *
1432  * This function contains hardware limitation workarounds for PCI-E adapters
1433  *
1434  *****************************************************************************/
1435 static void
1436 e1000_initialize_hardware_bits(struct e1000_hw *hw)
1437 {
1438         if ((hw->mac_type >= e1000_82571) &&
1439                         (!hw->initialize_hw_bits_disable)) {
1440                 /* Settings common to all PCI-express silicon */
1441                 uint32_t reg_ctrl, reg_ctrl_ext;
1442                 uint32_t reg_tarc0, reg_tarc1;
1443                 uint32_t reg_tctl;
1444                 uint32_t reg_txdctl, reg_txdctl1;
1445
1446                 /* link autonegotiation/sync workarounds */
1447                 reg_tarc0 = E1000_READ_REG(hw, TARC0);
1448                 reg_tarc0 &= ~((1 << 30)|(1 << 29)|(1 << 28)|(1 << 27));
1449
1450                 /* Enable not-done TX descriptor counting */
1451                 reg_txdctl = E1000_READ_REG(hw, TXDCTL);
1452                 reg_txdctl |= E1000_TXDCTL_COUNT_DESC;
1453                 E1000_WRITE_REG(hw, TXDCTL, reg_txdctl);
1454
1455                 reg_txdctl1 = E1000_READ_REG(hw, TXDCTL1);
1456                 reg_txdctl1 |= E1000_TXDCTL_COUNT_DESC;
1457                 E1000_WRITE_REG(hw, TXDCTL1, reg_txdctl1);
1458
1459                 switch (hw->mac_type) {
1460                 case e1000_82571:
1461                 case e1000_82572:
1462                         /* Clear PHY TX compatible mode bits */
1463                         reg_tarc1 = E1000_READ_REG(hw, TARC1);
1464                         reg_tarc1 &= ~((1 << 30)|(1 << 29));
1465
1466                         /* link autonegotiation/sync workarounds */
1467                         reg_tarc0 |= ((1 << 26)|(1 << 25)|(1 << 24)|(1 << 23));
1468
1469                         /* TX ring control fixes */
1470                         reg_tarc1 |= ((1 << 26)|(1 << 25)|(1 << 24));
1471
1472                         /* Multiple read bit is reversed polarity */
1473                         reg_tctl = E1000_READ_REG(hw, TCTL);
1474                         if (reg_tctl & E1000_TCTL_MULR)
1475                                 reg_tarc1 &= ~(1 << 28);
1476                         else
1477                                 reg_tarc1 |= (1 << 28);
1478
1479                         E1000_WRITE_REG(hw, TARC1, reg_tarc1);
1480                         break;
1481                 case e1000_82573:
1482                 case e1000_82574:
1483                         reg_ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
1484                         reg_ctrl_ext &= ~(1 << 23);
1485                         reg_ctrl_ext |= (1 << 22);
1486
1487                         /* TX byte count fix */
1488                         reg_ctrl = E1000_READ_REG(hw, CTRL);
1489                         reg_ctrl &= ~(1 << 29);
1490
1491                         E1000_WRITE_REG(hw, CTRL_EXT, reg_ctrl_ext);
1492                         E1000_WRITE_REG(hw, CTRL, reg_ctrl);
1493                         break;
1494                 case e1000_80003es2lan:
1495         /* improve small packet performace for fiber/serdes */
1496                         if ((hw->media_type == e1000_media_type_fiber)
1497                         || (hw->media_type ==
1498                                 e1000_media_type_internal_serdes)) {
1499                                 reg_tarc0 &= ~(1 << 20);
1500                         }
1501
1502                 /* Multiple read bit is reversed polarity */
1503                         reg_tctl = E1000_READ_REG(hw, TCTL);
1504                         reg_tarc1 = E1000_READ_REG(hw, TARC1);
1505                         if (reg_tctl & E1000_TCTL_MULR)
1506                                 reg_tarc1 &= ~(1 << 28);
1507                         else
1508                                 reg_tarc1 |= (1 << 28);
1509
1510                         E1000_WRITE_REG(hw, TARC1, reg_tarc1);
1511                         break;
1512                 case e1000_ich8lan:
1513                         /* Reduce concurrent DMA requests to 3 from 4 */
1514                         if ((hw->revision_id < 3) ||
1515                         ((hw->device_id != E1000_DEV_ID_ICH8_IGP_M_AMT) &&
1516                                 (hw->device_id != E1000_DEV_ID_ICH8_IGP_M)))
1517                                 reg_tarc0 |= ((1 << 29)|(1 << 28));
1518
1519                         reg_ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
1520                         reg_ctrl_ext |= (1 << 22);
1521                         E1000_WRITE_REG(hw, CTRL_EXT, reg_ctrl_ext);
1522
1523                         /* workaround TX hang with TSO=on */
1524                         reg_tarc0 |= ((1 << 27)|(1 << 26)|(1 << 24)|(1 << 23));
1525
1526                         /* Multiple read bit is reversed polarity */
1527                         reg_tctl = E1000_READ_REG(hw, TCTL);
1528                         reg_tarc1 = E1000_READ_REG(hw, TARC1);
1529                         if (reg_tctl & E1000_TCTL_MULR)
1530                                 reg_tarc1 &= ~(1 << 28);
1531                         else
1532                                 reg_tarc1 |= (1 << 28);
1533
1534                         /* workaround TX hang with TSO=on */
1535                         reg_tarc1 |= ((1 << 30)|(1 << 26)|(1 << 24));
1536
1537                         E1000_WRITE_REG(hw, TARC1, reg_tarc1);
1538                         break;
1539                 default:
1540                         break;
1541                 }
1542
1543                 E1000_WRITE_REG(hw, TARC0, reg_tarc0);
1544         }
1545 }
1546
1547 /******************************************************************************
1548  * Performs basic configuration of the adapter.
1549  *
1550  * hw - Struct containing variables accessed by shared code
1551  *
1552  * Assumes that the controller has previously been reset and is in a
1553  * post-reset uninitialized state. Initializes the receive address registers,
1554  * multicast table, and VLAN filter table. Calls routines to setup link
1555  * configuration and flow control settings. Clears all on-chip counters. Leaves
1556  * the transmit and receive units disabled and uninitialized.
1557  *****************************************************************************/
1558 static int
1559 e1000_init_hw(struct eth_device *nic)
1560 {
1561         struct e1000_hw *hw = nic->priv;
1562         uint32_t ctrl;
1563         uint32_t i;
1564         int32_t ret_val;
1565         uint16_t pcix_cmd_word;
1566         uint16_t pcix_stat_hi_word;
1567         uint16_t cmd_mmrbc;
1568         uint16_t stat_mmrbc;
1569         uint32_t mta_size;
1570         uint32_t reg_data;
1571         uint32_t ctrl_ext;
1572         DEBUGFUNC();
1573         /* force full DMA clock frequency for 10/100 on ICH8 A0-B0 */
1574         if ((hw->mac_type == e1000_ich8lan) &&
1575                 ((hw->revision_id < 3) ||
1576                 ((hw->device_id != E1000_DEV_ID_ICH8_IGP_M_AMT) &&
1577                 (hw->device_id != E1000_DEV_ID_ICH8_IGP_M)))) {
1578                         reg_data = E1000_READ_REG(hw, STATUS);
1579                         reg_data &= ~0x80000000;
1580                         E1000_WRITE_REG(hw, STATUS, reg_data);
1581         }
1582         /* Do not need initialize Identification LED */
1583
1584         /* Set the media type and TBI compatibility */
1585         e1000_set_media_type(hw);
1586
1587         /* Must be called after e1000_set_media_type
1588          * because media_type is used */
1589         e1000_initialize_hardware_bits(hw);
1590
1591         /* Disabling VLAN filtering. */
1592         DEBUGOUT("Initializing the IEEE VLAN\n");
1593         /* VET hardcoded to standard value and VFTA removed in ICH8 LAN */
1594         if (hw->mac_type != e1000_ich8lan) {
1595                 if (hw->mac_type < e1000_82545_rev_3)
1596                         E1000_WRITE_REG(hw, VET, 0);
1597                 e1000_clear_vfta(hw);
1598         }
1599
1600         /* For 82542 (rev 2.0), disable MWI and put the receiver into reset */
1601         if (hw->mac_type == e1000_82542_rev2_0) {
1602                 DEBUGOUT("Disabling MWI on 82542 rev 2.0\n");
1603                 pci_write_config_word(hw->pdev, PCI_COMMAND,
1604                                       hw->
1605                                       pci_cmd_word & ~PCI_COMMAND_INVALIDATE);
1606                 E1000_WRITE_REG(hw, RCTL, E1000_RCTL_RST);
1607                 E1000_WRITE_FLUSH(hw);
1608                 mdelay(5);
1609         }
1610
1611         /* Setup the receive address. This involves initializing all of the Receive
1612          * Address Registers (RARs 0 - 15).
1613          */
1614         e1000_init_rx_addrs(nic);
1615
1616         /* For 82542 (rev 2.0), take the receiver out of reset and enable MWI */
1617         if (hw->mac_type == e1000_82542_rev2_0) {
1618                 E1000_WRITE_REG(hw, RCTL, 0);
1619                 E1000_WRITE_FLUSH(hw);
1620                 mdelay(1);
1621                 pci_write_config_word(hw->pdev, PCI_COMMAND, hw->pci_cmd_word);
1622         }
1623
1624         /* Zero out the Multicast HASH table */
1625         DEBUGOUT("Zeroing the MTA\n");
1626         mta_size = E1000_MC_TBL_SIZE;
1627         if (hw->mac_type == e1000_ich8lan)
1628                 mta_size = E1000_MC_TBL_SIZE_ICH8LAN;
1629         for (i = 0; i < mta_size; i++) {
1630                 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
1631                 /* use write flush to prevent Memory Write Block (MWB) from
1632                  * occuring when accessing our register space */
1633                 E1000_WRITE_FLUSH(hw);
1634         }
1635 #if 0
1636         /* Set the PCI priority bit correctly in the CTRL register.  This
1637          * determines if the adapter gives priority to receives, or if it
1638          * gives equal priority to transmits and receives.  Valid only on
1639          * 82542 and 82543 silicon.
1640          */
1641         if (hw->dma_fairness && hw->mac_type <= e1000_82543) {
1642                 ctrl = E1000_READ_REG(hw, CTRL);
1643                 E1000_WRITE_REG(hw, CTRL, ctrl | E1000_CTRL_PRIOR);
1644         }
1645 #endif
1646         switch (hw->mac_type) {
1647         case e1000_82545_rev_3:
1648         case e1000_82546_rev_3:
1649                 break;
1650         default:
1651         /* Workaround for PCI-X problem when BIOS sets MMRBC incorrectly. */
1652         if (hw->bus_type == e1000_bus_type_pcix) {
1653                 pci_read_config_word(hw->pdev, PCIX_COMMAND_REGISTER,
1654                                      &pcix_cmd_word);
1655                 pci_read_config_word(hw->pdev, PCIX_STATUS_REGISTER_HI,
1656                                      &pcix_stat_hi_word);
1657                 cmd_mmrbc =
1658                     (pcix_cmd_word & PCIX_COMMAND_MMRBC_MASK) >>
1659                     PCIX_COMMAND_MMRBC_SHIFT;
1660                 stat_mmrbc =
1661                     (pcix_stat_hi_word & PCIX_STATUS_HI_MMRBC_MASK) >>
1662                     PCIX_STATUS_HI_MMRBC_SHIFT;
1663                 if (stat_mmrbc == PCIX_STATUS_HI_MMRBC_4K)
1664                         stat_mmrbc = PCIX_STATUS_HI_MMRBC_2K;
1665                 if (cmd_mmrbc > stat_mmrbc) {
1666                         pcix_cmd_word &= ~PCIX_COMMAND_MMRBC_MASK;
1667                         pcix_cmd_word |= stat_mmrbc << PCIX_COMMAND_MMRBC_SHIFT;
1668                         pci_write_config_word(hw->pdev, PCIX_COMMAND_REGISTER,
1669                                               pcix_cmd_word);
1670                 }
1671         }
1672                 break;
1673         }
1674
1675         /* More time needed for PHY to initialize */
1676         if (hw->mac_type == e1000_ich8lan)
1677                 mdelay(15);
1678
1679         /* Call a subroutine to configure the link and setup flow control. */
1680         ret_val = e1000_setup_link(nic);
1681
1682         /* Set the transmit descriptor write-back policy */
1683         if (hw->mac_type > e1000_82544) {
1684                 ctrl = E1000_READ_REG(hw, TXDCTL);
1685                 ctrl =
1686                     (ctrl & ~E1000_TXDCTL_WTHRESH) |
1687                     E1000_TXDCTL_FULL_TX_DESC_WB;
1688                 E1000_WRITE_REG(hw, TXDCTL, ctrl);
1689         }
1690
1691         /* Set the receive descriptor write back policy */
1692
1693         if (hw->mac_type >= e1000_82571) {
1694                 ctrl = E1000_READ_REG(hw, RXDCTL);
1695                 ctrl =
1696                     (ctrl & ~E1000_RXDCTL_WTHRESH) |
1697                     E1000_RXDCTL_FULL_RX_DESC_WB;
1698                 E1000_WRITE_REG(hw, RXDCTL, ctrl);
1699         }
1700
1701         switch (hw->mac_type) {
1702         default:
1703                 break;
1704         case e1000_80003es2lan:
1705                 /* Enable retransmit on late collisions */
1706                 reg_data = E1000_READ_REG(hw, TCTL);
1707                 reg_data |= E1000_TCTL_RTLC;
1708                 E1000_WRITE_REG(hw, TCTL, reg_data);
1709
1710                 /* Configure Gigabit Carry Extend Padding */
1711                 reg_data = E1000_READ_REG(hw, TCTL_EXT);
1712                 reg_data &= ~E1000_TCTL_EXT_GCEX_MASK;
1713                 reg_data |= DEFAULT_80003ES2LAN_TCTL_EXT_GCEX;
1714                 E1000_WRITE_REG(hw, TCTL_EXT, reg_data);
1715
1716                 /* Configure Transmit Inter-Packet Gap */
1717                 reg_data = E1000_READ_REG(hw, TIPG);
1718                 reg_data &= ~E1000_TIPG_IPGT_MASK;
1719                 reg_data |= DEFAULT_80003ES2LAN_TIPG_IPGT_1000;
1720                 E1000_WRITE_REG(hw, TIPG, reg_data);
1721
1722                 reg_data = E1000_READ_REG_ARRAY(hw, FFLT, 0x0001);
1723                 reg_data &= ~0x00100000;
1724                 E1000_WRITE_REG_ARRAY(hw, FFLT, 0x0001, reg_data);
1725                 /* Fall through */
1726         case e1000_82571:
1727         case e1000_82572:
1728         case e1000_ich8lan:
1729                 ctrl = E1000_READ_REG(hw, TXDCTL1);
1730                 ctrl = (ctrl & ~E1000_TXDCTL_WTHRESH)
1731                         | E1000_TXDCTL_FULL_TX_DESC_WB;
1732                 E1000_WRITE_REG(hw, TXDCTL1, ctrl);
1733                 break;
1734         case e1000_82573:
1735         case e1000_82574:
1736                 reg_data = E1000_READ_REG(hw, GCR);
1737                 reg_data |= E1000_GCR_L1_ACT_WITHOUT_L0S_RX;
1738                 E1000_WRITE_REG(hw, GCR, reg_data);
1739         }
1740
1741 #if 0
1742         /* Clear all of the statistics registers (clear on read).  It is
1743          * important that we do this after we have tried to establish link
1744          * because the symbol error count will increment wildly if there
1745          * is no link.
1746          */
1747         e1000_clear_hw_cntrs(hw);
1748
1749         /* ICH8 No-snoop bits are opposite polarity.
1750          * Set to snoop by default after reset. */
1751         if (hw->mac_type == e1000_ich8lan)
1752                 e1000_set_pci_ex_no_snoop(hw, PCI_EX_82566_SNOOP_ALL);
1753 #endif
1754
1755         if (hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER ||
1756                 hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3) {
1757                 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
1758                 /* Relaxed ordering must be disabled to avoid a parity
1759                  * error crash in a PCI slot. */
1760                 ctrl_ext |= E1000_CTRL_EXT_RO_DIS;
1761                 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
1762         }
1763
1764         return ret_val;
1765 }
1766
1767 /******************************************************************************
1768  * Configures flow control and link settings.
1769  *
1770  * hw - Struct containing variables accessed by shared code
1771  *
1772  * Determines which flow control settings to use. Calls the apropriate media-
1773  * specific link configuration function. Configures the flow control settings.
1774  * Assuming the adapter has a valid link partner, a valid link should be
1775  * established. Assumes the hardware has previously been reset and the
1776  * transmitter and receiver are not enabled.
1777  *****************************************************************************/
1778 static int
1779 e1000_setup_link(struct eth_device *nic)
1780 {
1781         struct e1000_hw *hw = nic->priv;
1782         uint32_t ctrl_ext;
1783         int32_t ret_val;
1784         uint16_t eeprom_data;
1785
1786         DEBUGFUNC();
1787
1788         /* In the case of the phy reset being blocked, we already have a link.
1789          * We do not have to set it up again. */
1790         if (e1000_check_phy_reset_block(hw))
1791                 return E1000_SUCCESS;
1792
1793         /* Read and store word 0x0F of the EEPROM. This word contains bits
1794          * that determine the hardware's default PAUSE (flow control) mode,
1795          * a bit that determines whether the HW defaults to enabling or
1796          * disabling auto-negotiation, and the direction of the
1797          * SW defined pins. If there is no SW over-ride of the flow
1798          * control setting, then the variable hw->fc will
1799          * be initialized based on a value in the EEPROM.
1800          */
1801         if (e1000_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG, 1,
1802                                 &eeprom_data) < 0) {
1803                 DEBUGOUT("EEPROM Read Error\n");
1804                 return -E1000_ERR_EEPROM;
1805         }
1806
1807         if (hw->fc == e1000_fc_default) {
1808                 switch (hw->mac_type) {
1809                 case e1000_ich8lan:
1810                 case e1000_82573:
1811                 case e1000_82574:
1812                         hw->fc = e1000_fc_full;
1813                         break;
1814                 default:
1815                         ret_val = e1000_read_eeprom(hw,
1816                                 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data);
1817                         if (ret_val) {
1818                                 DEBUGOUT("EEPROM Read Error\n");
1819                                 return -E1000_ERR_EEPROM;
1820                         }
1821                         if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == 0)
1822                                 hw->fc = e1000_fc_none;
1823                         else if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) ==
1824                                     EEPROM_WORD0F_ASM_DIR)
1825                                 hw->fc = e1000_fc_tx_pause;
1826                         else
1827                                 hw->fc = e1000_fc_full;
1828                         break;
1829                 }
1830         }
1831
1832         /* We want to save off the original Flow Control configuration just
1833          * in case we get disconnected and then reconnected into a different
1834          * hub or switch with different Flow Control capabilities.
1835          */
1836         if (hw->mac_type == e1000_82542_rev2_0)
1837                 hw->fc &= (~e1000_fc_tx_pause);
1838
1839         if ((hw->mac_type < e1000_82543) && (hw->report_tx_early == 1))
1840                 hw->fc &= (~e1000_fc_rx_pause);
1841
1842         hw->original_fc = hw->fc;
1843
1844         DEBUGOUT("After fix-ups FlowControl is now = %x\n", hw->fc);
1845
1846         /* Take the 4 bits from EEPROM word 0x0F that determine the initial
1847          * polarity value for the SW controlled pins, and setup the
1848          * Extended Device Control reg with that info.
1849          * This is needed because one of the SW controlled pins is used for
1850          * signal detection.  So this should be done before e1000_setup_pcs_link()
1851          * or e1000_phy_setup() is called.
1852          */
1853         if (hw->mac_type == e1000_82543) {
1854                 ctrl_ext = ((eeprom_data & EEPROM_WORD0F_SWPDIO_EXT) <<
1855                             SWDPIO__EXT_SHIFT);
1856                 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
1857         }
1858
1859         /* Call the necessary subroutine to configure the link. */
1860         ret_val = (hw->media_type == e1000_media_type_fiber) ?
1861             e1000_setup_fiber_link(nic) : e1000_setup_copper_link(nic);
1862         if (ret_val < 0) {
1863                 return ret_val;
1864         }
1865
1866         /* Initialize the flow control address, type, and PAUSE timer
1867          * registers to their default values.  This is done even if flow
1868          * control is disabled, because it does not hurt anything to
1869          * initialize these registers.
1870          */
1871         DEBUGOUT("Initializing the Flow Control address, type"
1872                         "and timer regs\n");
1873
1874         /* FCAL/H and FCT are hardcoded to standard values in e1000_ich8lan. */
1875         if (hw->mac_type != e1000_ich8lan) {
1876                 E1000_WRITE_REG(hw, FCT, FLOW_CONTROL_TYPE);
1877                 E1000_WRITE_REG(hw, FCAH, FLOW_CONTROL_ADDRESS_HIGH);
1878                 E1000_WRITE_REG(hw, FCAL, FLOW_CONTROL_ADDRESS_LOW);
1879         }
1880
1881         E1000_WRITE_REG(hw, FCTTV, hw->fc_pause_time);
1882
1883         /* Set the flow control receive threshold registers.  Normally,
1884          * these registers will be set to a default threshold that may be
1885          * adjusted later by the driver's runtime code.  However, if the
1886          * ability to transmit pause frames in not enabled, then these
1887          * registers will be set to 0.
1888          */
1889         if (!(hw->fc & e1000_fc_tx_pause)) {
1890                 E1000_WRITE_REG(hw, FCRTL, 0);
1891                 E1000_WRITE_REG(hw, FCRTH, 0);
1892         } else {
1893                 /* We need to set up the Receive Threshold high and low water marks
1894                  * as well as (optionally) enabling the transmission of XON frames.
1895                  */
1896                 if (hw->fc_send_xon) {
1897                         E1000_WRITE_REG(hw, FCRTL,
1898                                         (hw->fc_low_water | E1000_FCRTL_XONE));
1899                         E1000_WRITE_REG(hw, FCRTH, hw->fc_high_water);
1900                 } else {
1901                         E1000_WRITE_REG(hw, FCRTL, hw->fc_low_water);
1902                         E1000_WRITE_REG(hw, FCRTH, hw->fc_high_water);
1903                 }
1904         }
1905         return ret_val;
1906 }
1907
1908 /******************************************************************************
1909  * Sets up link for a fiber based adapter
1910  *
1911  * hw - Struct containing variables accessed by shared code
1912  *
1913  * Manipulates Physical Coding Sublayer functions in order to configure
1914  * link. Assumes the hardware has been previously reset and the transmitter
1915  * and receiver are not enabled.
1916  *****************************************************************************/
1917 static int
1918 e1000_setup_fiber_link(struct eth_device *nic)
1919 {
1920         struct e1000_hw *hw = nic->priv;
1921         uint32_t ctrl;
1922         uint32_t status;
1923         uint32_t txcw = 0;
1924         uint32_t i;
1925         uint32_t signal;
1926         int32_t ret_val;
1927
1928         DEBUGFUNC();
1929         /* On adapters with a MAC newer that 82544, SW Defineable pin 1 will be
1930          * set when the optics detect a signal. On older adapters, it will be
1931          * cleared when there is a signal
1932          */
1933         ctrl = E1000_READ_REG(hw, CTRL);
1934         if ((hw->mac_type > e1000_82544) && !(ctrl & E1000_CTRL_ILOS))
1935                 signal = E1000_CTRL_SWDPIN1;
1936         else
1937                 signal = 0;
1938
1939         printf("signal for %s is %x (ctrl %08x)!!!!\n", nic->name, signal,
1940                ctrl);
1941         /* Take the link out of reset */
1942         ctrl &= ~(E1000_CTRL_LRST);
1943
1944         e1000_config_collision_dist(hw);
1945
1946         /* Check for a software override of the flow control settings, and setup
1947          * the device accordingly.  If auto-negotiation is enabled, then software
1948          * will have to set the "PAUSE" bits to the correct value in the Tranmsit
1949          * Config Word Register (TXCW) and re-start auto-negotiation.  However, if
1950          * auto-negotiation is disabled, then software will have to manually
1951          * configure the two flow control enable bits in the CTRL register.
1952          *
1953          * The possible values of the "fc" parameter are:
1954          *      0:  Flow control is completely disabled
1955          *      1:  Rx flow control is enabled (we can receive pause frames, but
1956          *          not send pause frames).
1957          *      2:  Tx flow control is enabled (we can send pause frames but we do
1958          *          not support receiving pause frames).
1959          *      3:  Both Rx and TX flow control (symmetric) are enabled.
1960          */
1961         switch (hw->fc) {
1962         case e1000_fc_none:
1963                 /* Flow control is completely disabled by a software over-ride. */
1964                 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD);
1965                 break;
1966         case e1000_fc_rx_pause:
1967                 /* RX Flow control is enabled and TX Flow control is disabled by a
1968                  * software over-ride. Since there really isn't a way to advertise
1969                  * that we are capable of RX Pause ONLY, we will advertise that we
1970                  * support both symmetric and asymmetric RX PAUSE. Later, we will
1971                  *  disable the adapter's ability to send PAUSE frames.
1972                  */
1973                 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK);
1974                 break;
1975         case e1000_fc_tx_pause:
1976                 /* TX Flow control is enabled, and RX Flow control is disabled, by a
1977                  * software over-ride.
1978                  */
1979                 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_ASM_DIR);
1980                 break;
1981         case e1000_fc_full:
1982                 /* Flow control (both RX and TX) is enabled by a software over-ride. */
1983                 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK);
1984                 break;
1985         default:
1986                 DEBUGOUT("Flow control param set incorrectly\n");
1987                 return -E1000_ERR_CONFIG;
1988                 break;
1989         }
1990
1991         /* Since auto-negotiation is enabled, take the link out of reset (the link
1992          * will be in reset, because we previously reset the chip). This will
1993          * restart auto-negotiation.  If auto-neogtiation is successful then the
1994          * link-up status bit will be set and the flow control enable bits (RFCE
1995          * and TFCE) will be set according to their negotiated value.
1996          */
1997         DEBUGOUT("Auto-negotiation enabled (%#x)\n", txcw);
1998
1999         E1000_WRITE_REG(hw, TXCW, txcw);
2000         E1000_WRITE_REG(hw, CTRL, ctrl);
2001         E1000_WRITE_FLUSH(hw);
2002
2003         hw->txcw = txcw;
2004         mdelay(1);
2005
2006         /* If we have a signal (the cable is plugged in) then poll for a "Link-Up"
2007          * indication in the Device Status Register.  Time-out if a link isn't
2008          * seen in 500 milliseconds seconds (Auto-negotiation should complete in
2009          * less than 500 milliseconds even if the other end is doing it in SW).
2010          */
2011         if ((E1000_READ_REG(hw, CTRL) & E1000_CTRL_SWDPIN1) == signal) {
2012                 DEBUGOUT("Looking for Link\n");
2013                 for (i = 0; i < (LINK_UP_TIMEOUT / 10); i++) {
2014                         mdelay(10);
2015                         status = E1000_READ_REG(hw, STATUS);
2016                         if (status & E1000_STATUS_LU)
2017                                 break;
2018                 }
2019                 if (i == (LINK_UP_TIMEOUT / 10)) {
2020                         /* AutoNeg failed to achieve a link, so we'll call
2021                          * e1000_check_for_link. This routine will force the link up if we
2022                          * detect a signal. This will allow us to communicate with
2023                          * non-autonegotiating link partners.
2024                          */
2025                         DEBUGOUT("Never got a valid link from auto-neg!!!\n");
2026                         hw->autoneg_failed = 1;
2027                         ret_val = e1000_check_for_link(nic);
2028                         if (ret_val < 0) {
2029                                 DEBUGOUT("Error while checking for link\n");
2030                                 return ret_val;
2031                         }
2032                         hw->autoneg_failed = 0;
2033                 } else {
2034                         hw->autoneg_failed = 0;
2035                         DEBUGOUT("Valid Link Found\n");
2036                 }
2037         } else {
2038                 DEBUGOUT("No Signal Detected\n");
2039                 return -E1000_ERR_NOLINK;
2040         }
2041         return 0;
2042 }
2043
2044 /******************************************************************************
2045 * Make sure we have a valid PHY and change PHY mode before link setup.
2046 *
2047 * hw - Struct containing variables accessed by shared code
2048 ******************************************************************************/
2049 static int32_t
2050 e1000_copper_link_preconfig(struct e1000_hw *hw)
2051 {
2052         uint32_t ctrl;
2053         int32_t ret_val;
2054         uint16_t phy_data;
2055
2056         DEBUGFUNC();
2057
2058         ctrl = E1000_READ_REG(hw, CTRL);
2059         /* With 82543, we need to force speed and duplex on the MAC equal to what
2060          * the PHY speed and duplex configuration is. In addition, we need to
2061          * perform a hardware reset on the PHY to take it out of reset.
2062          */
2063         if (hw->mac_type > e1000_82543) {
2064                 ctrl |= E1000_CTRL_SLU;
2065                 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
2066                 E1000_WRITE_REG(hw, CTRL, ctrl);
2067         } else {
2068                 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX
2069                                 | E1000_CTRL_SLU);
2070                 E1000_WRITE_REG(hw, CTRL, ctrl);
2071                 ret_val = e1000_phy_hw_reset(hw);
2072                 if (ret_val)
2073                         return ret_val;
2074         }
2075
2076         /* Make sure we have a valid PHY */
2077         ret_val = e1000_detect_gig_phy(hw);
2078         if (ret_val) {
2079                 DEBUGOUT("Error, did not detect valid phy.\n");
2080                 return ret_val;
2081         }
2082         DEBUGOUT("Phy ID = %x \n", hw->phy_id);
2083
2084         /* Set PHY to class A mode (if necessary) */
2085         ret_val = e1000_set_phy_mode(hw);
2086         if (ret_val)
2087                 return ret_val;
2088         if ((hw->mac_type == e1000_82545_rev_3) ||
2089                 (hw->mac_type == e1000_82546_rev_3)) {
2090                 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL,
2091                                 &phy_data);
2092                 phy_data |= 0x00000008;
2093                 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL,
2094                                 phy_data);
2095         }
2096
2097         if (hw->mac_type <= e1000_82543 ||
2098                 hw->mac_type == e1000_82541 || hw->mac_type == e1000_82547 ||
2099                 hw->mac_type == e1000_82541_rev_2
2100                 || hw->mac_type == e1000_82547_rev_2)
2101                         hw->phy_reset_disable = false;
2102
2103         return E1000_SUCCESS;
2104 }
2105
2106 /*****************************************************************************
2107  *
2108  * This function sets the lplu state according to the active flag.  When
2109  * activating lplu this function also disables smart speed and vise versa.
2110  * lplu will not be activated unless the device autonegotiation advertisment
2111  * meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes.
2112  * hw: Struct containing variables accessed by shared code
2113  * active - true to enable lplu false to disable lplu.
2114  *
2115  * returns: - E1000_ERR_PHY if fail to read/write the PHY
2116  *            E1000_SUCCESS at any other case.
2117  *
2118  ****************************************************************************/
2119
2120 static int32_t
2121 e1000_set_d3_lplu_state(struct e1000_hw *hw, bool active)
2122 {
2123         uint32_t phy_ctrl = 0;
2124         int32_t ret_val;
2125         uint16_t phy_data;
2126         DEBUGFUNC();
2127
2128         if (hw->phy_type != e1000_phy_igp && hw->phy_type != e1000_phy_igp_2
2129             && hw->phy_type != e1000_phy_igp_3)
2130                 return E1000_SUCCESS;
2131
2132         /* During driver activity LPLU should not be used or it will attain link
2133          * from the lowest speeds starting from 10Mbps. The capability is used
2134          * for Dx transitions and states */
2135         if (hw->mac_type == e1000_82541_rev_2
2136                         || hw->mac_type == e1000_82547_rev_2) {
2137                 ret_val = e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO,
2138                                 &phy_data);
2139                 if (ret_val)
2140                         return ret_val;
2141         } else if (hw->mac_type == e1000_ich8lan) {
2142                 /* MAC writes into PHY register based on the state transition
2143                  * and start auto-negotiation. SW driver can overwrite the
2144                  * settings in CSR PHY power control E1000_PHY_CTRL register. */
2145                 phy_ctrl = E1000_READ_REG(hw, PHY_CTRL);
2146         } else {
2147                 ret_val = e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
2148                                 &phy_data);
2149                 if (ret_val)
2150                         return ret_val;
2151         }
2152
2153         if (!active) {
2154                 if (hw->mac_type == e1000_82541_rev_2 ||
2155                         hw->mac_type == e1000_82547_rev_2) {
2156                         phy_data &= ~IGP01E1000_GMII_FLEX_SPD;
2157                         ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO,
2158                                         phy_data);
2159                         if (ret_val)
2160                                 return ret_val;
2161                 } else {
2162                         if (hw->mac_type == e1000_ich8lan) {
2163                                 phy_ctrl &= ~E1000_PHY_CTRL_NOND0A_LPLU;
2164                                 E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
2165                         } else {
2166                                 phy_data &= ~IGP02E1000_PM_D3_LPLU;
2167                                 ret_val = e1000_write_phy_reg(hw,
2168                                         IGP02E1000_PHY_POWER_MGMT, phy_data);
2169                                 if (ret_val)
2170                                         return ret_val;
2171                         }
2172                 }
2173
2174         /* LPLU and SmartSpeed are mutually exclusive.  LPLU is used during
2175          * Dx states where the power conservation is most important.  During
2176          * driver activity we should enable SmartSpeed, so performance is
2177          * maintained. */
2178                 if (hw->smart_speed == e1000_smart_speed_on) {
2179                         ret_val = e1000_read_phy_reg(hw,
2180                                         IGP01E1000_PHY_PORT_CONFIG, &phy_data);
2181                         if (ret_val)
2182                                 return ret_val;
2183
2184                         phy_data |= IGP01E1000_PSCFR_SMART_SPEED;
2185                         ret_val = e1000_write_phy_reg(hw,
2186                                         IGP01E1000_PHY_PORT_CONFIG, phy_data);
2187                         if (ret_val)
2188                                 return ret_val;
2189                 } else if (hw->smart_speed == e1000_smart_speed_off) {
2190                         ret_val = e1000_read_phy_reg(hw,
2191                                         IGP01E1000_PHY_PORT_CONFIG, &phy_data);
2192                         if (ret_val)
2193                                 return ret_val;
2194
2195                         phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
2196                         ret_val = e1000_write_phy_reg(hw,
2197                                         IGP01E1000_PHY_PORT_CONFIG, phy_data);
2198                         if (ret_val)
2199                                 return ret_val;
2200                 }
2201
2202         } else if ((hw->autoneg_advertised == AUTONEG_ADVERTISE_SPEED_DEFAULT)
2203                 || (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_ALL) ||
2204                 (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_100_ALL)) {
2205
2206                 if (hw->mac_type == e1000_82541_rev_2 ||
2207                     hw->mac_type == e1000_82547_rev_2) {
2208                         phy_data |= IGP01E1000_GMII_FLEX_SPD;
2209                         ret_val = e1000_write_phy_reg(hw,
2210                                         IGP01E1000_GMII_FIFO, phy_data);
2211                         if (ret_val)
2212                                 return ret_val;
2213                 } else {
2214                         if (hw->mac_type == e1000_ich8lan) {
2215                                 phy_ctrl |= E1000_PHY_CTRL_NOND0A_LPLU;
2216                                 E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
2217                         } else {
2218                                 phy_data |= IGP02E1000_PM_D3_LPLU;
2219                                 ret_val = e1000_write_phy_reg(hw,
2220                                         IGP02E1000_PHY_POWER_MGMT, phy_data);
2221                                 if (ret_val)
2222                                         return ret_val;
2223                         }
2224                 }
2225
2226                 /* When LPLU is enabled we should disable SmartSpeed */
2227                 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
2228                                 &phy_data);
2229                 if (ret_val)
2230                         return ret_val;
2231
2232                 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
2233                 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
2234                                 phy_data);
2235                 if (ret_val)
2236                         return ret_val;
2237         }
2238         return E1000_SUCCESS;
2239 }
2240
2241 /*****************************************************************************
2242  *
2243  * This function sets the lplu d0 state according to the active flag.  When
2244  * activating lplu this function also disables smart speed and vise versa.
2245  * lplu will not be activated unless the device autonegotiation advertisment
2246  * meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes.
2247  * hw: Struct containing variables accessed by shared code
2248  * active - true to enable lplu false to disable lplu.
2249  *
2250  * returns: - E1000_ERR_PHY if fail to read/write the PHY
2251  *            E1000_SUCCESS at any other case.
2252  *
2253  ****************************************************************************/
2254
2255 static int32_t
2256 e1000_set_d0_lplu_state(struct e1000_hw *hw, bool active)
2257 {
2258         uint32_t phy_ctrl = 0;
2259         int32_t ret_val;
2260         uint16_t phy_data;
2261         DEBUGFUNC();
2262
2263         if (hw->mac_type <= e1000_82547_rev_2)
2264                 return E1000_SUCCESS;
2265
2266         if (hw->mac_type == e1000_ich8lan) {
2267                 phy_ctrl = E1000_READ_REG(hw, PHY_CTRL);
2268         } else {
2269                 ret_val = e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
2270                                 &phy_data);
2271                 if (ret_val)
2272                         return ret_val;
2273         }
2274
2275         if (!active) {
2276                 if (hw->mac_type == e1000_ich8lan) {
2277                         phy_ctrl &= ~E1000_PHY_CTRL_D0A_LPLU;
2278                         E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
2279                 } else {
2280                         phy_data &= ~IGP02E1000_PM_D0_LPLU;
2281                         ret_val = e1000_write_phy_reg(hw,
2282                                         IGP02E1000_PHY_POWER_MGMT, phy_data);
2283                         if (ret_val)
2284                                 return ret_val;
2285                 }
2286
2287         /* LPLU and SmartSpeed are mutually exclusive.  LPLU is used during
2288          * Dx states where the power conservation is most important.  During
2289          * driver activity we should enable SmartSpeed, so performance is
2290          * maintained. */
2291                 if (hw->smart_speed == e1000_smart_speed_on) {
2292                         ret_val = e1000_read_phy_reg(hw,
2293                                         IGP01E1000_PHY_PORT_CONFIG, &phy_data);
2294                         if (ret_val)
2295                                 return ret_val;
2296
2297                         phy_data |= IGP01E1000_PSCFR_SMART_SPEED;
2298                         ret_val = e1000_write_phy_reg(hw,
2299                                         IGP01E1000_PHY_PORT_CONFIG, phy_data);
2300                         if (ret_val)
2301                                 return ret_val;
2302                 } else if (hw->smart_speed == e1000_smart_speed_off) {
2303                         ret_val = e1000_read_phy_reg(hw,
2304                                         IGP01E1000_PHY_PORT_CONFIG, &phy_data);
2305                         if (ret_val)
2306                                 return ret_val;
2307
2308                         phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
2309                         ret_val = e1000_write_phy_reg(hw,
2310                                         IGP01E1000_PHY_PORT_CONFIG, phy_data);
2311                         if (ret_val)
2312                                 return ret_val;
2313                 }
2314
2315
2316         } else {
2317
2318                 if (hw->mac_type == e1000_ich8lan) {
2319                         phy_ctrl |= E1000_PHY_CTRL_D0A_LPLU;
2320                         E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
2321                 } else {
2322                         phy_data |= IGP02E1000_PM_D0_LPLU;
2323                         ret_val = e1000_write_phy_reg(hw,
2324                                         IGP02E1000_PHY_POWER_MGMT, phy_data);
2325                         if (ret_val)
2326                                 return ret_val;
2327                 }
2328
2329                 /* When LPLU is enabled we should disable SmartSpeed */
2330                 ret_val = e1000_read_phy_reg(hw,
2331                                 IGP01E1000_PHY_PORT_CONFIG, &phy_data);
2332                 if (ret_val)
2333                         return ret_val;
2334
2335                 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
2336                 ret_val = e1000_write_phy_reg(hw,
2337                                 IGP01E1000_PHY_PORT_CONFIG, phy_data);
2338                 if (ret_val)
2339                         return ret_val;
2340
2341         }
2342         return E1000_SUCCESS;
2343 }
2344
2345 /********************************************************************
2346 * Copper link setup for e1000_phy_igp series.
2347 *
2348 * hw - Struct containing variables accessed by shared code
2349 *********************************************************************/
2350 static int32_t
2351 e1000_copper_link_igp_setup(struct e1000_hw *hw)
2352 {
2353         uint32_t led_ctrl;
2354         int32_t ret_val;
2355         uint16_t phy_data;
2356
2357         DEBUGFUNC();
2358
2359         if (hw->phy_reset_disable)
2360                 return E1000_SUCCESS;
2361
2362         ret_val = e1000_phy_reset(hw);
2363         if (ret_val) {
2364                 DEBUGOUT("Error Resetting the PHY\n");
2365                 return ret_val;
2366         }
2367
2368         /* Wait 15ms for MAC to configure PHY from eeprom settings */
2369         mdelay(15);
2370         if (hw->mac_type != e1000_ich8lan) {
2371                 /* Configure activity LED after PHY reset */
2372                 led_ctrl = E1000_READ_REG(hw, LEDCTL);
2373                 led_ctrl &= IGP_ACTIVITY_LED_MASK;
2374                 led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
2375                 E1000_WRITE_REG(hw, LEDCTL, led_ctrl);
2376         }
2377
2378         /* The NVM settings will configure LPLU in D3 for IGP2 and IGP3 PHYs */
2379         if (hw->phy_type == e1000_phy_igp) {
2380                 /* disable lplu d3 during driver init */
2381                 ret_val = e1000_set_d3_lplu_state(hw, false);
2382                 if (ret_val) {
2383                         DEBUGOUT("Error Disabling LPLU D3\n");
2384                         return ret_val;
2385                 }
2386         }
2387
2388         /* disable lplu d0 during driver init */
2389         ret_val = e1000_set_d0_lplu_state(hw, false);
2390         if (ret_val) {
2391                 DEBUGOUT("Error Disabling LPLU D0\n");
2392                 return ret_val;
2393         }
2394         /* Configure mdi-mdix settings */
2395         ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data);
2396         if (ret_val)
2397                 return ret_val;
2398
2399         if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
2400                 hw->dsp_config_state = e1000_dsp_config_disabled;
2401                 /* Force MDI for earlier revs of the IGP PHY */
2402                 phy_data &= ~(IGP01E1000_PSCR_AUTO_MDIX
2403                                 | IGP01E1000_PSCR_FORCE_MDI_MDIX);
2404                 hw->mdix = 1;
2405
2406         } else {
2407                 hw->dsp_config_state = e1000_dsp_config_enabled;
2408                 phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX;
2409
2410                 switch (hw->mdix) {
2411                 case 1:
2412                         phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
2413                         break;
2414                 case 2:
2415                         phy_data |= IGP01E1000_PSCR_FORCE_MDI_MDIX;
2416                         break;
2417                 case 0:
2418                 default:
2419                         phy_data |= IGP01E1000_PSCR_AUTO_MDIX;
2420                         break;
2421                 }
2422         }
2423         ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data);
2424         if (ret_val)
2425                 return ret_val;
2426
2427         /* set auto-master slave resolution settings */
2428         if (hw->autoneg) {
2429                 e1000_ms_type phy_ms_setting = hw->master_slave;
2430
2431                 if (hw->ffe_config_state == e1000_ffe_config_active)
2432                         hw->ffe_config_state = e1000_ffe_config_enabled;
2433
2434                 if (hw->dsp_config_state == e1000_dsp_config_activated)
2435                         hw->dsp_config_state = e1000_dsp_config_enabled;
2436
2437                 /* when autonegotiation advertisment is only 1000Mbps then we
2438                   * should disable SmartSpeed and enable Auto MasterSlave
2439                   * resolution as hardware default. */
2440                 if (hw->autoneg_advertised == ADVERTISE_1000_FULL) {
2441                         /* Disable SmartSpeed */
2442                         ret_val = e1000_read_phy_reg(hw,
2443                                         IGP01E1000_PHY_PORT_CONFIG, &phy_data);
2444                         if (ret_val)
2445                                 return ret_val;
2446                         phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
2447                         ret_val = e1000_write_phy_reg(hw,
2448                                         IGP01E1000_PHY_PORT_CONFIG, phy_data);
2449                         if (ret_val)
2450                                 return ret_val;
2451                         /* Set auto Master/Slave resolution process */
2452                         ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL,
2453                                         &phy_data);
2454                         if (ret_val)
2455                                 return ret_val;
2456                         phy_data &= ~CR_1000T_MS_ENABLE;
2457                         ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL,
2458                                         phy_data);
2459                         if (ret_val)
2460                                 return ret_val;
2461                 }
2462
2463                 ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data);
2464                 if (ret_val)
2465                         return ret_val;
2466
2467                 /* load defaults for future use */
2468                 hw->original_master_slave = (phy_data & CR_1000T_MS_ENABLE) ?
2469                                 ((phy_data & CR_1000T_MS_VALUE) ?
2470                                 e1000_ms_force_master :
2471                                 e1000_ms_force_slave) :
2472                                 e1000_ms_auto;
2473
2474                 switch (phy_ms_setting) {
2475                 case e1000_ms_force_master:
2476                         phy_data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE);
2477                         break;
2478                 case e1000_ms_force_slave:
2479                         phy_data |= CR_1000T_MS_ENABLE;
2480                         phy_data &= ~(CR_1000T_MS_VALUE);
2481                         break;
2482                 case e1000_ms_auto:
2483                         phy_data &= ~CR_1000T_MS_ENABLE;
2484                 default:
2485                         break;
2486                 }
2487                 ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data);
2488                 if (ret_val)
2489                         return ret_val;
2490         }
2491
2492         return E1000_SUCCESS;
2493 }
2494
2495 /*****************************************************************************
2496  * This function checks the mode of the firmware.
2497  *
2498  * returns  - true when the mode is IAMT or false.
2499  ****************************************************************************/
2500 bool
2501 e1000_check_mng_mode(struct e1000_hw *hw)
2502 {
2503         uint32_t fwsm;
2504         DEBUGFUNC();
2505
2506         fwsm = E1000_READ_REG(hw, FWSM);
2507
2508         if (hw->mac_type == e1000_ich8lan) {
2509                 if ((fwsm & E1000_FWSM_MODE_MASK) ==
2510                     (E1000_MNG_ICH_IAMT_MODE << E1000_FWSM_MODE_SHIFT))
2511                         return true;
2512         } else if ((fwsm & E1000_FWSM_MODE_MASK) ==
2513                        (E1000_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT))
2514                         return true;
2515
2516         return false;
2517 }
2518
2519 static int32_t
2520 e1000_write_kmrn_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t data)
2521 {
2522         uint16_t swfw = E1000_SWFW_PHY0_SM;
2523         uint32_t reg_val;
2524         DEBUGFUNC();
2525
2526         if (e1000_is_second_port(hw))
2527                 swfw = E1000_SWFW_PHY1_SM;
2528
2529         if (e1000_swfw_sync_acquire(hw, swfw))
2530                 return -E1000_ERR_SWFW_SYNC;
2531
2532         reg_val = ((reg_addr << E1000_KUMCTRLSTA_OFFSET_SHIFT)
2533                         & E1000_KUMCTRLSTA_OFFSET) | data;
2534         E1000_WRITE_REG(hw, KUMCTRLSTA, reg_val);
2535         udelay(2);
2536
2537         return E1000_SUCCESS;
2538 }
2539
2540 static int32_t
2541 e1000_read_kmrn_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t *data)
2542 {
2543         uint16_t swfw = E1000_SWFW_PHY0_SM;
2544         uint32_t reg_val;
2545         DEBUGFUNC();
2546
2547         if (e1000_is_second_port(hw))
2548                 swfw = E1000_SWFW_PHY1_SM;
2549
2550         if (e1000_swfw_sync_acquire(hw, swfw))
2551                 return -E1000_ERR_SWFW_SYNC;
2552
2553         /* Write register address */
2554         reg_val = ((reg_addr << E1000_KUMCTRLSTA_OFFSET_SHIFT) &
2555                         E1000_KUMCTRLSTA_OFFSET) | E1000_KUMCTRLSTA_REN;
2556         E1000_WRITE_REG(hw, KUMCTRLSTA, reg_val);
2557         udelay(2);
2558
2559         /* Read the data returned */
2560         reg_val = E1000_READ_REG(hw, KUMCTRLSTA);
2561         *data = (uint16_t)reg_val;
2562
2563         return E1000_SUCCESS;
2564 }
2565
2566 /********************************************************************
2567 * Copper link setup for e1000_phy_gg82563 series.
2568 *
2569 * hw - Struct containing variables accessed by shared code
2570 *********************************************************************/
2571 static int32_t
2572 e1000_copper_link_ggp_setup(struct e1000_hw *hw)
2573 {
2574         int32_t ret_val;
2575         uint16_t phy_data;
2576         uint32_t reg_data;
2577
2578         DEBUGFUNC();
2579
2580         if (!hw->phy_reset_disable) {
2581                 /* Enable CRS on TX for half-duplex operation. */
2582                 ret_val = e1000_read_phy_reg(hw,
2583                                 GG82563_PHY_MAC_SPEC_CTRL, &phy_data);
2584                 if (ret_val)
2585                         return ret_val;
2586
2587                 phy_data |= GG82563_MSCR_ASSERT_CRS_ON_TX;
2588                 /* Use 25MHz for both link down and 1000BASE-T for Tx clock */
2589                 phy_data |= GG82563_MSCR_TX_CLK_1000MBPS_25MHZ;
2590
2591                 ret_val = e1000_write_phy_reg(hw,
2592                                 GG82563_PHY_MAC_SPEC_CTRL, phy_data);
2593                 if (ret_val)
2594                         return ret_val;
2595
2596                 /* Options:
2597                  *   MDI/MDI-X = 0 (default)
2598                  *   0 - Auto for all speeds
2599                  *   1 - MDI mode
2600                  *   2 - MDI-X mode
2601                  *   3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
2602                  */
2603                 ret_val = e1000_read_phy_reg(hw,
2604                                 GG82563_PHY_SPEC_CTRL, &phy_data);
2605                 if (ret_val)
2606                         return ret_val;
2607
2608                 phy_data &= ~GG82563_PSCR_CROSSOVER_MODE_MASK;
2609
2610                 switch (hw->mdix) {
2611                 case 1:
2612                         phy_data |= GG82563_PSCR_CROSSOVER_MODE_MDI;
2613                         break;
2614                 case 2:
2615                         phy_data |= GG82563_PSCR_CROSSOVER_MODE_MDIX;
2616                         break;
2617                 case 0:
2618                 default:
2619                         phy_data |= GG82563_PSCR_CROSSOVER_MODE_AUTO;
2620                         break;
2621                 }
2622
2623                 /* Options:
2624                  *   disable_polarity_correction = 0 (default)
2625                  *       Automatic Correction for Reversed Cable Polarity
2626                  *   0 - Disabled
2627                  *   1 - Enabled
2628                  */
2629                 phy_data &= ~GG82563_PSCR_POLARITY_REVERSAL_DISABLE;
2630                 ret_val = e1000_write_phy_reg(hw,
2631                                 GG82563_PHY_SPEC_CTRL, phy_data);
2632
2633                 if (ret_val)
2634                         return ret_val;
2635
2636                 /* SW Reset the PHY so all changes take effect */
2637                 ret_val = e1000_phy_reset(hw);
2638                 if (ret_val) {
2639                         DEBUGOUT("Error Resetting the PHY\n");
2640                         return ret_val;
2641                 }
2642         } /* phy_reset_disable */
2643
2644         if (hw->mac_type == e1000_80003es2lan) {
2645                 /* Bypass RX and TX FIFO's */
2646                 ret_val = e1000_write_kmrn_reg(hw,
2647                                 E1000_KUMCTRLSTA_OFFSET_FIFO_CTRL,
2648                                 E1000_KUMCTRLSTA_FIFO_CTRL_RX_BYPASS
2649                                 | E1000_KUMCTRLSTA_FIFO_CTRL_TX_BYPASS);
2650                 if (ret_val)
2651                         return ret_val;
2652
2653                 ret_val = e1000_read_phy_reg(hw,
2654                                 GG82563_PHY_SPEC_CTRL_2, &phy_data);
2655                 if (ret_val)
2656                         return ret_val;
2657
2658                 phy_data &= ~GG82563_PSCR2_REVERSE_AUTO_NEG;
2659                 ret_val = e1000_write_phy_reg(hw,
2660                                 GG82563_PHY_SPEC_CTRL_2, phy_data);
2661
2662                 if (ret_val)
2663                         return ret_val;
2664
2665                 reg_data = E1000_READ_REG(hw, CTRL_EXT);
2666                 reg_data &= ~(E1000_CTRL_EXT_LINK_MODE_MASK);
2667                 E1000_WRITE_REG(hw, CTRL_EXT, reg_data);
2668
2669                 ret_val = e1000_read_phy_reg(hw,
2670                                 GG82563_PHY_PWR_MGMT_CTRL, &phy_data);
2671                 if (ret_val)
2672                         return ret_val;
2673
2674         /* Do not init these registers when the HW is in IAMT mode, since the
2675          * firmware will have already initialized them.  We only initialize
2676          * them if the HW is not in IAMT mode.
2677          */
2678                 if (e1000_check_mng_mode(hw) == false) {
2679                         /* Enable Electrical Idle on the PHY */
2680                         phy_data |= GG82563_PMCR_ENABLE_ELECTRICAL_IDLE;
2681                         ret_val = e1000_write_phy_reg(hw,
2682                                         GG82563_PHY_PWR_MGMT_CTRL, phy_data);
2683                         if (ret_val)
2684                                 return ret_val;
2685
2686                         ret_val = e1000_read_phy_reg(hw,
2687                                         GG82563_PHY_KMRN_MODE_CTRL, &phy_data);
2688                         if (ret_val)
2689                                 return ret_val;
2690
2691                         phy_data &= ~GG82563_KMCR_PASS_FALSE_CARRIER;
2692                         ret_val = e1000_write_phy_reg(hw,
2693                                         GG82563_PHY_KMRN_MODE_CTRL, phy_data);
2694
2695                         if (ret_val)
2696                                 return ret_val;
2697                 }
2698
2699                 /* Workaround: Disable padding in Kumeran interface in the MAC
2700                  * and in the PHY to avoid CRC errors.
2701                  */
2702                 ret_val = e1000_read_phy_reg(hw,
2703                                 GG82563_PHY_INBAND_CTRL, &phy_data);
2704                 if (ret_val)
2705                         return ret_val;
2706                 phy_data |= GG82563_ICR_DIS_PADDING;
2707                 ret_val = e1000_write_phy_reg(hw,
2708                                 GG82563_PHY_INBAND_CTRL, phy_data);
2709                 if (ret_val)
2710                         return ret_val;
2711         }
2712         return E1000_SUCCESS;
2713 }
2714
2715 /********************************************************************
2716 * Copper link setup for e1000_phy_m88 series.
2717 *
2718 * hw - Struct containing variables accessed by shared code
2719 *********************************************************************/
2720 static int32_t
2721 e1000_copper_link_mgp_setup(struct e1000_hw *hw)
2722 {
2723         int32_t ret_val;
2724         uint16_t phy_data;
2725
2726         DEBUGFUNC();
2727
2728         if (hw->phy_reset_disable)
2729                 return E1000_SUCCESS;
2730
2731         /* Enable CRS on TX. This must be set for half-duplex operation. */
2732         ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
2733         if (ret_val)
2734                 return ret_val;
2735
2736         phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
2737
2738         /* Options:
2739          *   MDI/MDI-X = 0 (default)
2740          *   0 - Auto for all speeds
2741          *   1 - MDI mode
2742          *   2 - MDI-X mode
2743          *   3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
2744          */
2745         phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
2746
2747         switch (hw->mdix) {
2748         case 1:
2749                 phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE;
2750                 break;
2751         case 2:
2752                 phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE;
2753                 break;
2754         case 3:
2755                 phy_data |= M88E1000_PSCR_AUTO_X_1000T;
2756                 break;
2757         case 0:
2758         default:
2759                 phy_data |= M88E1000_PSCR_AUTO_X_MODE;
2760                 break;
2761         }
2762
2763         /* Options:
2764          *   disable_polarity_correction = 0 (default)
2765          *       Automatic Correction for Reversed Cable Polarity
2766          *   0 - Disabled
2767          *   1 - Enabled
2768          */
2769         phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL;
2770         ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
2771         if (ret_val)
2772                 return ret_val;
2773
2774         if (hw->phy_revision < M88E1011_I_REV_4) {
2775                 /* Force TX_CLK in the Extended PHY Specific Control Register
2776                  * to 25MHz clock.
2777                  */
2778                 ret_val = e1000_read_phy_reg(hw,
2779                                 M88E1000_EXT_PHY_SPEC_CTRL, &phy_data);
2780                 if (ret_val)
2781                         return ret_val;
2782
2783                 phy_data |= M88E1000_EPSCR_TX_CLK_25;
2784
2785                 if ((hw->phy_revision == E1000_REVISION_2) &&
2786                         (hw->phy_id == M88E1111_I_PHY_ID)) {
2787                         /* Vidalia Phy, set the downshift counter to 5x */
2788                         phy_data &= ~(M88EC018_EPSCR_DOWNSHIFT_COUNTER_MASK);
2789                         phy_data |= M88EC018_EPSCR_DOWNSHIFT_COUNTER_5X;
2790                         ret_val = e1000_write_phy_reg(hw,
2791                                         M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
2792                         if (ret_val)
2793                                 return ret_val;
2794                 } else {
2795                         /* Configure Master and Slave downshift values */
2796                         phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK
2797                                         | M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK);
2798                         phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X
2799                                         | M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X);
2800                         ret_val = e1000_write_phy_reg(hw,
2801                                         M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
2802                         if (ret_val)
2803                                 return ret_val;
2804                 }
2805         }
2806
2807         /* SW Reset the PHY so all changes take effect */
2808         ret_val = e1000_phy_reset(hw);
2809         if (ret_val) {
2810                 DEBUGOUT("Error Resetting the PHY\n");
2811                 return ret_val;
2812         }
2813
2814         return E1000_SUCCESS;
2815 }
2816
2817 /********************************************************************
2818 * Setup auto-negotiation and flow control advertisements,
2819 * and then perform auto-negotiation.
2820 *
2821 * hw - Struct containing variables accessed by shared code
2822 *********************************************************************/
2823 static int32_t
2824 e1000_copper_link_autoneg(struct e1000_hw *hw)
2825 {
2826         int32_t ret_val;
2827         uint16_t phy_data;
2828
2829         DEBUGFUNC();
2830
2831         /* Perform some bounds checking on the hw->autoneg_advertised
2832          * parameter.  If this variable is zero, then set it to the default.
2833          */
2834         hw->autoneg_advertised &= AUTONEG_ADVERTISE_SPEED_DEFAULT;
2835
2836         /* If autoneg_advertised is zero, we assume it was not defaulted
2837          * by the calling code so we set to advertise full capability.
2838          */
2839         if (hw->autoneg_advertised == 0)
2840                 hw->autoneg_advertised = AUTONEG_ADVERTISE_SPEED_DEFAULT;
2841
2842         /* IFE phy only supports 10/100 */
2843         if (hw->phy_type == e1000_phy_ife)
2844                 hw->autoneg_advertised &= AUTONEG_ADVERTISE_10_100_ALL;
2845
2846         DEBUGOUT("Reconfiguring auto-neg advertisement params\n");
2847         ret_val = e1000_phy_setup_autoneg(hw);
2848         if (ret_val) {
2849                 DEBUGOUT("Error Setting up Auto-Negotiation\n");
2850                 return ret_val;
2851         }
2852         DEBUGOUT("Restarting Auto-Neg\n");
2853
2854         /* Restart auto-negotiation by setting the Auto Neg Enable bit and
2855          * the Auto Neg Restart bit in the PHY control register.
2856          */
2857         ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data);
2858         if (ret_val)
2859                 return ret_val;
2860
2861         phy_data |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG);
2862         ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data);
2863         if (ret_val)
2864                 return ret_val;
2865
2866         /* Does the user want to wait for Auto-Neg to complete here, or
2867          * check at a later time (for example, callback routine).
2868          */
2869         /* If we do not wait for autonegtation to complete I
2870          * do not see a valid link status.
2871          * wait_autoneg_complete = 1 .
2872          */
2873         if (hw->wait_autoneg_complete) {
2874                 ret_val = e1000_wait_autoneg(hw);
2875                 if (ret_val) {
2876                         DEBUGOUT("Error while waiting for autoneg"
2877                                         "to complete\n");
2878                         return ret_val;
2879                 }
2880         }
2881
2882         hw->get_link_status = true;
2883
2884         return E1000_SUCCESS;
2885 }
2886
2887 /******************************************************************************
2888 * Config the MAC and the PHY after link is up.
2889 *   1) Set up the MAC to the current PHY speed/duplex
2890 *      if we are on 82543.  If we
2891 *      are on newer silicon, we only need to configure
2892 *      collision distance in the Transmit Control Register.
2893 *   2) Set up flow control on the MAC to that established with
2894 *      the link partner.
2895 *   3) Config DSP to improve Gigabit link quality for some PHY revisions.
2896 *
2897 * hw - Struct containing variables accessed by shared code
2898 ******************************************************************************/
2899 static int32_t
2900 e1000_copper_link_postconfig(struct e1000_hw *hw)
2901 {
2902         int32_t ret_val;
2903         DEBUGFUNC();
2904
2905         if (hw->mac_type >= e1000_82544) {
2906                 e1000_config_collision_dist(hw);
2907         } else {
2908                 ret_val = e1000_config_mac_to_phy(hw);
2909                 if (ret_val) {
2910                         DEBUGOUT("Error configuring MAC to PHY settings\n");
2911                         return ret_val;
2912                 }
2913         }
2914         ret_val = e1000_config_fc_after_link_up(hw);
2915         if (ret_val) {
2916                 DEBUGOUT("Error Configuring Flow Control\n");
2917                 return ret_val;
2918         }
2919         return E1000_SUCCESS;
2920 }
2921
2922 /******************************************************************************
2923 * Detects which PHY is present and setup the speed and duplex
2924 *
2925 * hw - Struct containing variables accessed by shared code
2926 ******************************************************************************/
2927 static int
2928 e1000_setup_copper_link(struct eth_device *nic)
2929 {
2930         struct e1000_hw *hw = nic->priv;
2931         int32_t ret_val;
2932         uint16_t i;
2933         uint16_t phy_data;
2934         uint16_t reg_data;
2935
2936         DEBUGFUNC();
2937
2938         switch (hw->mac_type) {
2939         case e1000_80003es2lan:
2940         case e1000_ich8lan:
2941                 /* Set the mac to wait the maximum time between each
2942                  * iteration and increase the max iterations when
2943                  * polling the phy; this fixes erroneous timeouts at 10Mbps. */
2944                 ret_val = e1000_write_kmrn_reg(hw,
2945                                 GG82563_REG(0x34, 4), 0xFFFF);
2946                 if (ret_val)
2947                         return ret_val;
2948                 ret_val = e1000_read_kmrn_reg(hw,
2949                                 GG82563_REG(0x34, 9), &reg_data);
2950                 if (ret_val)
2951                         return ret_val;
2952                 reg_data |= 0x3F;
2953                 ret_val = e1000_write_kmrn_reg(hw,
2954                                 GG82563_REG(0x34, 9), reg_data);
2955                 if (ret_val)
2956                         return ret_val;
2957         default:
2958                 break;
2959         }
2960
2961         /* Check if it is a valid PHY and set PHY mode if necessary. */
2962         ret_val = e1000_copper_link_preconfig(hw);
2963         if (ret_val)
2964                 return ret_val;
2965         switch (hw->mac_type) {
2966         case e1000_80003es2lan:
2967                 /* Kumeran registers are written-only */
2968                 reg_data =
2969                 E1000_KUMCTRLSTA_INB_CTRL_LINK_STATUS_TX_TIMEOUT_DEFAULT;
2970                 reg_data |= E1000_KUMCTRLSTA_INB_CTRL_DIS_PADDING;
2971                 ret_val = e1000_write_kmrn_reg(hw,
2972                                 E1000_KUMCTRLSTA_OFFSET_INB_CTRL, reg_data);
2973                 if (ret_val)
2974                         return ret_val;
2975                 break;
2976         default:
2977                 break;
2978         }
2979
2980         if (hw->phy_type == e1000_phy_igp ||
2981                 hw->phy_type == e1000_phy_igp_3 ||
2982                 hw->phy_type == e1000_phy_igp_2) {
2983                 ret_val = e1000_copper_link_igp_setup(hw);
2984                 if (ret_val)
2985                         return ret_val;
2986         } else if (hw->phy_type == e1000_phy_m88) {
2987                 ret_val = e1000_copper_link_mgp_setup(hw);
2988                 if (ret_val)
2989                         return ret_val;
2990         } else if (hw->phy_type == e1000_phy_gg82563) {
2991                 ret_val = e1000_copper_link_ggp_setup(hw);
2992                 if (ret_val)
2993                         return ret_val;
2994         }
2995
2996         /* always auto */
2997         /* Setup autoneg and flow control advertisement
2998           * and perform autonegotiation */
2999         ret_val = e1000_copper_link_autoneg(hw);
3000         if (ret_val)
3001                 return ret_val;
3002
3003         /* Check link status. Wait up to 100 microseconds for link to become
3004          * valid.
3005          */
3006         for (i = 0; i < 10; i++) {
3007                 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
3008                 if (ret_val)
3009                         return ret_val;
3010                 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
3011                 if (ret_val)
3012                         return ret_val;
3013
3014                 if (phy_data & MII_SR_LINK_STATUS) {
3015                         /* Config the MAC and PHY after link is up */
3016                         ret_val = e1000_copper_link_postconfig(hw);
3017                         if (ret_val)
3018                                 return ret_val;
3019
3020                         DEBUGOUT("Valid link established!!!\n");
3021                         return E1000_SUCCESS;
3022                 }
3023                 udelay(10);
3024         }
3025
3026         DEBUGOUT("Unable to establish link!!!\n");
3027         return E1000_SUCCESS;
3028 }
3029
3030 /******************************************************************************
3031 * Configures PHY autoneg and flow control advertisement settings
3032 *
3033 * hw - Struct containing variables accessed by shared code
3034 ******************************************************************************/
3035 int32_t
3036 e1000_phy_setup_autoneg(struct e1000_hw *hw)
3037 {
3038         int32_t ret_val;
3039         uint16_t mii_autoneg_adv_reg;
3040         uint16_t mii_1000t_ctrl_reg;
3041
3042         DEBUGFUNC();
3043
3044         /* Read the MII Auto-Neg Advertisement Register (Address 4). */
3045         ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg);
3046         if (ret_val)
3047                 return ret_val;
3048
3049         if (hw->phy_type != e1000_phy_ife) {
3050                 /* Read the MII 1000Base-T Control Register (Address 9). */
3051                 ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL,
3052                                 &mii_1000t_ctrl_reg);
3053                 if (ret_val)
3054                         return ret_val;
3055         } else
3056                 mii_1000t_ctrl_reg = 0;
3057
3058         /* Need to parse both autoneg_advertised and fc and set up
3059          * the appropriate PHY registers.  First we will parse for
3060          * autoneg_advertised software override.  Since we can advertise
3061          * a plethora of combinations, we need to check each bit
3062          * individually.
3063          */
3064
3065         /* First we clear all the 10/100 mb speed bits in the Auto-Neg
3066          * Advertisement Register (Address 4) and the 1000 mb speed bits in
3067          * the  1000Base-T Control Register (Address 9).
3068          */
3069         mii_autoneg_adv_reg &= ~REG4_SPEED_MASK;
3070         mii_1000t_ctrl_reg &= ~REG9_SPEED_MASK;
3071
3072         DEBUGOUT("autoneg_advertised %x\n", hw->autoneg_advertised);
3073
3074         /* Do we want to advertise 10 Mb Half Duplex? */
3075         if (hw->autoneg_advertised & ADVERTISE_10_HALF) {
3076                 DEBUGOUT("Advertise 10mb Half duplex\n");
3077                 mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS;
3078         }
3079
3080         /* Do we want to advertise 10 Mb Full Duplex? */
3081         if (hw->autoneg_advertised & ADVERTISE_10_FULL) {
3082                 DEBUGOUT("Advertise 10mb Full duplex\n");
3083                 mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS;
3084         }
3085
3086         /* Do we want to advertise 100 Mb Half Duplex? */
3087         if (hw->autoneg_advertised & ADVERTISE_100_HALF) {
3088                 DEBUGOUT("Advertise 100mb Half duplex\n");
3089                 mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS;
3090         }
3091
3092         /* Do we want to advertise 100 Mb Full Duplex? */
3093         if (hw->autoneg_advertised & ADVERTISE_100_FULL) {
3094                 DEBUGOUT("Advertise 100mb Full duplex\n");
3095                 mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS;
3096         }
3097
3098         /* We do not allow the Phy to advertise 1000 Mb Half Duplex */
3099         if (hw->autoneg_advertised & ADVERTISE_1000_HALF) {
3100                 DEBUGOUT
3101                     ("Advertise 1000mb Half duplex requested, request denied!\n");
3102         }
3103
3104         /* Do we want to advertise 1000 Mb Full Duplex? */
3105         if (hw->autoneg_advertised & ADVERTISE_1000_FULL) {
3106                 DEBUGOUT("Advertise 1000mb Full duplex\n");
3107                 mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS;
3108         }
3109
3110         /* Check for a software override of the flow control settings, and
3111          * setup the PHY advertisement registers accordingly.  If
3112          * auto-negotiation is enabled, then software will have to set the
3113          * "PAUSE" bits to the correct value in the Auto-Negotiation
3114          * Advertisement Register (PHY_AUTONEG_ADV) and re-start auto-negotiation.
3115          *
3116          * The possible values of the "fc" parameter are:
3117          *      0:  Flow control is completely disabled
3118          *      1:  Rx flow control is enabled (we can receive pause frames
3119          *          but not send pause frames).
3120          *      2:  Tx flow control is enabled (we can send pause frames
3121          *          but we do not support receiving pause frames).
3122          *      3:  Both Rx and TX flow control (symmetric) are enabled.
3123          *  other:  No software override.  The flow control configuration
3124          *          in the EEPROM is used.
3125          */
3126         switch (hw->fc) {
3127         case e1000_fc_none:     /* 0 */
3128                 /* Flow control (RX & TX) is completely disabled by a
3129                  * software over-ride.
3130                  */
3131                 mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
3132                 break;
3133         case e1000_fc_rx_pause: /* 1 */
3134                 /* RX Flow control is enabled, and TX Flow control is
3135                  * disabled, by a software over-ride.
3136                  */
3137                 /* Since there really isn't a way to advertise that we are
3138                  * capable of RX Pause ONLY, we will advertise that we
3139                  * support both symmetric and asymmetric RX PAUSE.  Later
3140                  * (in e1000_config_fc_after_link_up) we will disable the
3141                  *hw's ability to send PAUSE frames.
3142                  */
3143                 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
3144                 break;
3145         case e1000_fc_tx_pause: /* 2 */
3146                 /* TX Flow control is enabled, and RX Flow control is
3147                  * disabled, by a software over-ride.
3148                  */
3149                 mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR;
3150                 mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE;
3151                 break;
3152         case e1000_fc_full:     /* 3 */
3153                 /* Flow control (both RX and TX) is enabled by a software
3154                  * over-ride.
3155                  */
3156                 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
3157                 break;
3158         default:
3159                 DEBUGOUT("Flow control param set incorrectly\n");
3160                 return -E1000_ERR_CONFIG;
3161         }
3162
3163         ret_val = e1000_write_phy_reg(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg);
3164         if (ret_val)
3165                 return ret_val;
3166
3167         DEBUGOUT("Auto-Neg Advertising %x\n", mii_autoneg_adv_reg);
3168
3169         if (hw->phy_type != e1000_phy_ife) {
3170                 ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL,
3171                                 mii_1000t_ctrl_reg);
3172                 if (ret_val)
3173                         return ret_val;
3174         }
3175
3176         return E1000_SUCCESS;
3177 }
3178
3179 /******************************************************************************
3180 * Sets the collision distance in the Transmit Control register
3181 *
3182 * hw - Struct containing variables accessed by shared code
3183 *
3184 * Link should have been established previously. Reads the speed and duplex
3185 * information from the Device Status register.
3186 ******************************************************************************/
3187 static void
3188 e1000_config_collision_dist(struct e1000_hw *hw)
3189 {
3190         uint32_t tctl, coll_dist;
3191
3192         DEBUGFUNC();
3193
3194         if (hw->mac_type < e1000_82543)
3195                 coll_dist = E1000_COLLISION_DISTANCE_82542;
3196         else
3197                 coll_dist = E1000_COLLISION_DISTANCE;
3198
3199         tctl = E1000_READ_REG(hw, TCTL);
3200
3201         tctl &= ~E1000_TCTL_COLD;
3202         tctl |= coll_dist << E1000_COLD_SHIFT;
3203
3204         E1000_WRITE_REG(hw, TCTL, tctl);
3205         E1000_WRITE_FLUSH(hw);
3206 }
3207
3208 /******************************************************************************
3209 * Sets MAC speed and duplex settings to reflect the those in the PHY
3210 *
3211 * hw - Struct containing variables accessed by shared code
3212 * mii_reg - data to write to the MII control register
3213 *
3214 * The contents of the PHY register containing the needed information need to
3215 * be passed in.
3216 ******************************************************************************/
3217 static int
3218 e1000_config_mac_to_phy(struct e1000_hw *hw)
3219 {
3220         uint32_t ctrl;
3221         uint16_t phy_data;
3222
3223         DEBUGFUNC();
3224
3225         /* Read the Device Control Register and set the bits to Force Speed
3226          * and Duplex.
3227          */
3228         ctrl = E1000_READ_REG(hw, CTRL);
3229         ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
3230         ctrl &= ~(E1000_CTRL_SPD_SEL | E1000_CTRL_ILOS);
3231
3232         /* Set up duplex in the Device Control and Transmit Control
3233          * registers depending on negotiated values.
3234          */
3235         if (e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data) < 0) {
3236                 DEBUGOUT("PHY Read Error\n");
3237                 return -E1000_ERR_PHY;
3238         }
3239         if (phy_data & M88E1000_PSSR_DPLX)
3240                 ctrl |= E1000_CTRL_FD;
3241         else
3242                 ctrl &= ~E1000_CTRL_FD;
3243
3244         e1000_config_collision_dist(hw);
3245
3246         /* Set up speed in the Device Control register depending on
3247          * negotiated values.
3248          */
3249         if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS)
3250                 ctrl |= E1000_CTRL_SPD_1000;
3251         else if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_100MBS)
3252                 ctrl |= E1000_CTRL_SPD_100;
3253         /* Write the configured values back to the Device Control Reg. */
3254         E1000_WRITE_REG(hw, CTRL, ctrl);
3255         return 0;
3256 }
3257
3258 /******************************************************************************
3259  * Forces the MAC's flow control settings.
3260  *
3261  * hw - Struct containing variables accessed by shared code
3262  *
3263  * Sets the TFCE and RFCE bits in the device control register to reflect
3264  * the adapter settings. TFCE and RFCE need to be explicitly set by
3265  * software when a Copper PHY is used because autonegotiation is managed
3266  * by the PHY rather than the MAC. Software must also configure these
3267  * bits when link is forced on a fiber connection.
3268  *****************************************************************************/
3269 static int
3270 e1000_force_mac_fc(struct e1000_hw *hw)
3271 {
3272         uint32_t ctrl;
3273
3274         DEBUGFUNC();
3275
3276         /* Get the current configuration of the Device Control Register */
3277         ctrl = E1000_READ_REG(hw, CTRL);
3278
3279         /* Because we didn't get link via the internal auto-negotiation
3280          * mechanism (we either forced link or we got link via PHY
3281          * auto-neg), we have to manually enable/disable transmit an
3282          * receive flow control.
3283          *
3284          * The "Case" statement below enables/disable flow control
3285          * according to the "hw->fc" parameter.
3286          *
3287          * The possible values of the "fc" parameter are:
3288          *      0:  Flow control is completely disabled
3289          *      1:  Rx flow control is enabled (we can receive pause
3290          *          frames but not send pause frames).
3291          *      2:  Tx flow control is enabled (we can send pause frames
3292          *          frames but we do not receive pause frames).
3293          *      3:  Both Rx and TX flow control (symmetric) is enabled.
3294          *  other:  No other values should be possible at this point.
3295          */
3296
3297         switch (hw->fc) {
3298         case e1000_fc_none:
3299                 ctrl &= (~(E1000_CTRL_TFCE | E1000_CTRL_RFCE));
3300                 break;
3301         case e1000_fc_rx_pause:
3302                 ctrl &= (~E1000_CTRL_TFCE);
3303                 ctrl |= E1000_CTRL_RFCE;
3304                 break;
3305         case e1000_fc_tx_pause:
3306                 ctrl &= (~E1000_CTRL_RFCE);
3307                 ctrl |= E1000_CTRL_TFCE;
3308                 break;
3309         case e1000_fc_full:
3310                 ctrl |= (E1000_CTRL_TFCE | E1000_CTRL_RFCE);
3311                 break;
3312         default:
3313                 DEBUGOUT("Flow control param set incorrectly\n");
3314                 return -E1000_ERR_CONFIG;
3315         }
3316
3317         /* Disable TX Flow Control for 82542 (rev 2.0) */
3318         if (hw->mac_type == e1000_82542_rev2_0)
3319                 ctrl &= (~E1000_CTRL_TFCE);
3320
3321         E1000_WRITE_REG(hw, CTRL, ctrl);
3322         return 0;
3323 }
3324
3325 /******************************************************************************
3326  * Configures flow control settings after link is established
3327  *
3328  * hw - Struct containing variables accessed by shared code
3329  *
3330  * Should be called immediately after a valid link has been established.
3331  * Forces MAC flow control settings if link was forced. When in MII/GMII mode
3332  * and autonegotiation is enabled, the MAC flow control settings will be set
3333  * based on the flow control negotiated by the PHY. In TBI mode, the TFCE
3334  * and RFCE bits will be automaticaly set to the negotiated flow control mode.
3335  *****************************************************************************/
3336 static int32_t
3337 e1000_config_fc_after_link_up(struct e1000_hw *hw)
3338 {
3339         int32_t ret_val;
3340         uint16_t mii_status_reg;
3341         uint16_t mii_nway_adv_reg;
3342         uint16_t mii_nway_lp_ability_reg;
3343         uint16_t speed;
3344         uint16_t duplex;
3345
3346         DEBUGFUNC();
3347
3348         /* Check for the case where we have fiber media and auto-neg failed
3349          * so we had to force link.  In this case, we need to force the
3350          * configuration of the MAC to match the "fc" parameter.
3351          */
3352         if (((hw->media_type == e1000_media_type_fiber) && (hw->autoneg_failed))
3353                 || ((hw->media_type == e1000_media_type_internal_serdes)
3354                 && (hw->autoneg_failed))
3355                 || ((hw->media_type == e1000_media_type_copper)
3356                 && (!hw->autoneg))) {
3357                 ret_val = e1000_force_mac_fc(hw);
3358                 if (ret_val < 0) {
3359                         DEBUGOUT("Error forcing flow control settings\n");
3360                         return ret_val;
3361                 }
3362         }
3363
3364         /* Check for the case where we have copper media and auto-neg is
3365          * enabled.  In this case, we need to check and see if Auto-Neg
3366          * has completed, and if so, how the PHY and link partner has
3367          * flow control configured.
3368          */
3369         if (hw->media_type == e1000_media_type_copper) {
3370                 /* Read the MII Status Register and check to see if AutoNeg
3371                  * has completed.  We read this twice because this reg has
3372                  * some "sticky" (latched) bits.
3373                  */
3374                 if (e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg) < 0) {
3375                         DEBUGOUT("PHY Read Error \n");
3376                         return -E1000_ERR_PHY;
3377                 }
3378                 if (e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg) < 0) {
3379                         DEBUGOUT("PHY Read Error \n");
3380                         return -E1000_ERR_PHY;
3381                 }
3382
3383                 if (mii_status_reg & MII_SR_AUTONEG_COMPLETE) {
3384                         /* The AutoNeg process has completed, so we now need to
3385                          * read both the Auto Negotiation Advertisement Register
3386                          * (Address 4) and the Auto_Negotiation Base Page Ability
3387                          * Register (Address 5) to determine how flow control was
3388                          * negotiated.
3389                          */
3390                         if (e1000_read_phy_reg
3391                             (hw, PHY_AUTONEG_ADV, &mii_nway_adv_reg) < 0) {
3392                                 DEBUGOUT("PHY Read Error\n");
3393                                 return -E1000_ERR_PHY;
3394                         }
3395                         if (e1000_read_phy_reg
3396                             (hw, PHY_LP_ABILITY,
3397                              &mii_nway_lp_ability_reg) < 0) {
3398                                 DEBUGOUT("PHY Read Error\n");
3399                                 return -E1000_ERR_PHY;
3400                         }
3401
3402                         /* Two bits in the Auto Negotiation Advertisement Register
3403                          * (Address 4) and two bits in the Auto Negotiation Base
3404                          * Page Ability Register (Address 5) determine flow control
3405                          * for both the PHY and the link partner.  The following
3406                          * table, taken out of the IEEE 802.3ab/D6.0 dated March 25,
3407                          * 1999, describes these PAUSE resolution bits and how flow
3408                          * control is determined based upon these settings.
3409                          * NOTE:  DC = Don't Care
3410                          *
3411                          *   LOCAL DEVICE  |   LINK PARTNER
3412                          * PAUSE | ASM_DIR | PAUSE | ASM_DIR | NIC Resolution
3413                          *-------|---------|-------|---------|--------------------
3414                          *   0   |    0    |  DC   |   DC    | e1000_fc_none
3415                          *   0   |    1    |   0   |   DC    | e1000_fc_none
3416                          *   0   |    1    |   1   |    0    | e1000_fc_none
3417                          *   0   |    1    |   1   |    1    | e1000_fc_tx_pause
3418                          *   1   |    0    |   0   |   DC    | e1000_fc_none
3419                          *   1   |   DC    |   1   |   DC    | e1000_fc_full
3420                          *   1   |    1    |   0   |    0    | e1000_fc_none
3421                          *   1   |    1    |   0   |    1    | e1000_fc_rx_pause
3422                          *
3423                          */
3424                         /* Are both PAUSE bits set to 1?  If so, this implies
3425                          * Symmetric Flow Control is enabled at both ends.  The
3426                          * ASM_DIR bits are irrelevant per the spec.
3427                          *
3428                          * For Symmetric Flow Control:
3429                          *
3430                          *   LOCAL DEVICE  |   LINK PARTNER
3431                          * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
3432                          *-------|---------|-------|---------|--------------------
3433                          *   1   |   DC    |   1   |   DC    | e1000_fc_full
3434                          *
3435                          */
3436                         if ((mii_nway_adv_reg & NWAY_AR_PAUSE) &&
3437                             (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE)) {
3438                                 /* Now we need to check if the user selected RX ONLY
3439                                  * of pause frames.  In this case, we had to advertise
3440                                  * FULL flow control because we could not advertise RX
3441                                  * ONLY. Hence, we must now check to see if we need to
3442                                  * turn OFF  the TRANSMISSION of PAUSE frames.
3443                                  */
3444                                 if (hw->original_fc == e1000_fc_full) {
3445                                         hw->fc = e1000_fc_full;
3446                                         DEBUGOUT("Flow Control = FULL.\r\n");
3447                                 } else {
3448                                         hw->fc = e1000_fc_rx_pause;
3449                                         DEBUGOUT
3450                                             ("Flow Control = RX PAUSE frames only.\r\n");
3451                                 }
3452                         }
3453                         /* For receiving PAUSE frames ONLY.
3454                          *
3455                          *   LOCAL DEVICE  |   LINK PARTNER
3456                          * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
3457                          *-------|---------|-------|---------|--------------------
3458                          *   0   |    1    |   1   |    1    | e1000_fc_tx_pause
3459                          *
3460                          */
3461                         else if (!(mii_nway_adv_reg & NWAY_AR_PAUSE) &&
3462                                  (mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
3463                                  (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
3464                                  (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR))
3465                         {
3466                                 hw->fc = e1000_fc_tx_pause;
3467                                 DEBUGOUT
3468                                     ("Flow Control = TX PAUSE frames only.\r\n");
3469                         }
3470                         /* For transmitting PAUSE frames ONLY.
3471                          *
3472                          *   LOCAL DEVICE  |   LINK PARTNER
3473                          * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
3474                          *-------|---------|-------|---------|--------------------
3475                          *   1   |    1    |   0   |    1    | e1000_fc_rx_pause
3476                          *
3477                          */
3478                         else if ((mii_nway_adv_reg & NWAY_AR_PAUSE) &&
3479                                  (mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
3480                                  !(mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
3481                                  (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR))
3482                         {
3483                                 hw->fc = e1000_fc_rx_pause;
3484                                 DEBUGOUT
3485                                     ("Flow Control = RX PAUSE frames only.\r\n");
3486                         }
3487                         /* Per the IEEE spec, at this point flow control should be
3488                          * disabled.  However, we want to consider that we could
3489                          * be connected to a legacy switch that doesn't advertise
3490                          * desired flow control, but can be forced on the link
3491                          * partner.  So if we advertised no flow control, that is
3492                          * what we will resolve to.  If we advertised some kind of
3493                          * receive capability (Rx Pause Only or Full Flow Control)
3494                          * and the link partner advertised none, we will configure
3495                          * ourselves to enable Rx Flow Control only.  We can do
3496                          * this safely for two reasons:  If the link partner really
3497                          * didn't want flow control enabled, and we enable Rx, no
3498                          * harm done since we won't be receiving any PAUSE frames
3499                          * anyway.  If the intent on the link partner was to have
3500                          * flow control enabled, then by us enabling RX only, we
3501                          * can at least receive pause frames and process them.
3502                          * This is a good idea because in most cases, since we are
3503                          * predominantly a server NIC, more times than not we will
3504                          * be asked to delay transmission of packets than asking
3505                          * our link partner to pause transmission of frames.
3506                          */
3507                         else if (hw->original_fc == e1000_fc_none ||
3508                                  hw->original_fc == e1000_fc_tx_pause) {
3509                                 hw->fc = e1000_fc_none;
3510                                 DEBUGOUT("Flow Control = NONE.\r\n");
3511                         } else {
3512                                 hw->fc = e1000_fc_rx_pause;
3513                                 DEBUGOUT
3514                                     ("Flow Control = RX PAUSE frames only.\r\n");
3515                         }
3516
3517                         /* Now we need to do one last check...  If we auto-
3518                          * negotiated to HALF DUPLEX, flow control should not be
3519                          * enabled per IEEE 802.3 spec.
3520                          */
3521                         e1000_get_speed_and_duplex(hw, &speed, &duplex);
3522
3523                         if (duplex == HALF_DUPLEX)
3524                                 hw->fc = e1000_fc_none;
3525
3526                         /* Now we call a subroutine to actually force the MAC
3527                          * controller to use the correct flow control settings.
3528                          */
3529                         ret_val = e1000_force_mac_fc(hw);
3530                         if (ret_val < 0) {
3531                                 DEBUGOUT
3532                                     ("Error forcing flow control settings\n");
3533                                 return ret_val;
3534                         }
3535                 } else {
3536                         DEBUGOUT
3537                             ("Copper PHY and Auto Neg has not completed.\r\n");
3538                 }
3539         }
3540         return E1000_SUCCESS;
3541 }
3542
3543 /******************************************************************************
3544  * Checks to see if the link status of the hardware has changed.
3545  *
3546  * hw - Struct containing variables accessed by shared code
3547  *
3548  * Called by any function that needs to check the link status of the adapter.
3549  *****************************************************************************/
3550 static int
3551 e1000_check_for_link(struct eth_device *nic)
3552 {
3553         struct e1000_hw *hw = nic->priv;
3554         uint32_t rxcw;
3555         uint32_t ctrl;
3556         uint32_t status;
3557         uint32_t rctl;
3558         uint32_t signal;
3559         int32_t ret_val;
3560         uint16_t phy_data;
3561         uint16_t lp_capability;
3562
3563         DEBUGFUNC();
3564
3565         /* On adapters with a MAC newer that 82544, SW Defineable pin 1 will be
3566          * set when the optics detect a signal. On older adapters, it will be
3567          * cleared when there is a signal
3568          */
3569         ctrl = E1000_READ_REG(hw, CTRL);
3570         if ((hw->mac_type > e1000_82544) && !(ctrl & E1000_CTRL_ILOS))
3571                 signal = E1000_CTRL_SWDPIN1;
3572         else
3573                 signal = 0;
3574
3575         status = E1000_READ_REG(hw, STATUS);
3576         rxcw = E1000_READ_REG(hw, RXCW);
3577         DEBUGOUT("ctrl: %#08x status %#08x rxcw %#08x\n", ctrl, status, rxcw);
3578
3579         /* If we have a copper PHY then we only want to go out to the PHY
3580          * registers to see if Auto-Neg has completed and/or if our link
3581          * status has changed.  The get_link_status flag will be set if we
3582          * receive a Link Status Change interrupt or we have Rx Sequence
3583          * Errors.
3584          */
3585         if ((hw->media_type == e1000_media_type_copper) && hw->get_link_status) {
3586                 /* First we want to see if the MII Status Register reports
3587                  * link.  If so, then we want to get the current speed/duplex
3588                  * of the PHY.
3589                  * Read the register twice since the link bit is sticky.
3590                  */
3591                 if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) {
3592                         DEBUGOUT("PHY Read Error\n");
3593                         return -E1000_ERR_PHY;
3594                 }
3595                 if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) {
3596                         DEBUGOUT("PHY Read Error\n");
3597                         return -E1000_ERR_PHY;
3598                 }
3599
3600                 if (phy_data & MII_SR_LINK_STATUS) {
3601                         hw->get_link_status = false;
3602                 } else {
3603                         /* No link detected */
3604                         return -E1000_ERR_NOLINK;
3605                 }
3606
3607                 /* We have a M88E1000 PHY and Auto-Neg is enabled.  If we
3608                  * have Si on board that is 82544 or newer, Auto
3609                  * Speed Detection takes care of MAC speed/duplex
3610                  * configuration.  So we only need to configure Collision
3611                  * Distance in the MAC.  Otherwise, we need to force
3612                  * speed/duplex on the MAC to the current PHY speed/duplex
3613                  * settings.
3614                  */
3615                 if (hw->mac_type >= e1000_82544)
3616                         e1000_config_collision_dist(hw);
3617                 else {
3618                         ret_val = e1000_config_mac_to_phy(hw);
3619                         if (ret_val < 0) {
3620                                 DEBUGOUT
3621                                     ("Error configuring MAC to PHY settings\n");
3622                                 return ret_val;
3623                         }
3624                 }
3625
3626                 /* Configure Flow Control now that Auto-Neg has completed. First, we
3627                  * need to restore the desired flow control settings because we may
3628                  * have had to re-autoneg with a different link partner.
3629                  */
3630                 ret_val = e1000_config_fc_after_link_up(hw);
3631                 if (ret_val < 0) {
3632                         DEBUGOUT("Error configuring flow control\n");
3633                         return ret_val;
3634                 }
3635
3636                 /* At this point we know that we are on copper and we have
3637                  * auto-negotiated link.  These are conditions for checking the link
3638                  * parter capability register.  We use the link partner capability to
3639                  * determine if TBI Compatibility needs to be turned on or off.  If
3640                  * the link partner advertises any speed in addition to Gigabit, then
3641                  * we assume that they are GMII-based, and TBI compatibility is not
3642                  * needed. If no other speeds are advertised, we assume the link
3643                  * partner is TBI-based, and we turn on TBI Compatibility.
3644                  */
3645                 if (hw->tbi_compatibility_en) {
3646                         if (e1000_read_phy_reg
3647                             (hw, PHY_LP_ABILITY, &lp_capability) < 0) {
3648                                 DEBUGOUT("PHY Read Error\n");
3649                                 return -E1000_ERR_PHY;
3650                         }
3651                         if (lp_capability & (NWAY_LPAR_10T_HD_CAPS |
3652                                              NWAY_LPAR_10T_FD_CAPS |
3653                                              NWAY_LPAR_100TX_HD_CAPS |
3654                                              NWAY_LPAR_100TX_FD_CAPS |
3655                                              NWAY_LPAR_100T4_CAPS)) {
3656                                 /* If our link partner advertises anything in addition to
3657                                  * gigabit, we do not need to enable TBI compatibility.
3658                                  */
3659                                 if (hw->tbi_compatibility_on) {
3660                                         /* If we previously were in the mode, turn it off. */
3661                                         rctl = E1000_READ_REG(hw, RCTL);
3662                                         rctl &= ~E1000_RCTL_SBP;
3663                                         E1000_WRITE_REG(hw, RCTL, rctl);
3664                                         hw->tbi_compatibility_on = false;
3665                                 }
3666                         } else {
3667                                 /* If TBI compatibility is was previously off, turn it on. For
3668                                  * compatibility with a TBI link partner, we will store bad
3669                                  * packets. Some frames have an additional byte on the end and
3670                                  * will look like CRC errors to to the hardware.
3671                                  */
3672                                 if (!hw->tbi_compatibility_on) {
3673                                         hw->tbi_compatibility_on = true;
3674                                         rctl = E1000_READ_REG(hw, RCTL);
3675                                         rctl |= E1000_RCTL_SBP;
3676                                         E1000_WRITE_REG(hw, RCTL, rctl);
3677                                 }
3678                         }
3679                 }
3680         }
3681         /* If we don't have link (auto-negotiation failed or link partner cannot
3682          * auto-negotiate), the cable is plugged in (we have signal), and our
3683          * link partner is not trying to auto-negotiate with us (we are receiving
3684          * idles or data), we need to force link up. We also need to give
3685          * auto-negotiation time to complete, in case the cable was just plugged
3686          * in. The autoneg_failed flag does this.
3687          */
3688         else if ((hw->media_type == e1000_media_type_fiber) &&
3689                  (!(status & E1000_STATUS_LU)) &&
3690                  ((ctrl & E1000_CTRL_SWDPIN1) == signal) &&
3691                  (!(rxcw & E1000_RXCW_C))) {
3692                 if (hw->autoneg_failed == 0) {
3693                         hw->autoneg_failed = 1;
3694                         return 0;
3695                 }
3696                 DEBUGOUT("NOT RXing /C/, disable AutoNeg and force link.\r\n");
3697
3698                 /* Disable auto-negotiation in the TXCW register */
3699                 E1000_WRITE_REG(hw, TXCW, (hw->txcw & ~E1000_TXCW_ANE));
3700
3701                 /* Force link-up and also force full-duplex. */
3702                 ctrl = E1000_READ_REG(hw, CTRL);
3703                 ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FD);
3704                 E1000_WRITE_REG(hw, CTRL, ctrl);
3705
3706                 /* Configure Flow Control after forcing link up. */
3707                 ret_val = e1000_config_fc_after_link_up(hw);
3708                 if (ret_val < 0) {
3709                         DEBUGOUT("Error configuring flow control\n");
3710                         return ret_val;
3711                 }
3712         }
3713         /* If we are forcing link and we are receiving /C/ ordered sets, re-enable
3714          * auto-negotiation in the TXCW register and disable forced link in the
3715          * Device Control register in an attempt to auto-negotiate with our link
3716          * partner.
3717          */
3718         else if ((hw->media_type == e1000_media_type_fiber) &&
3719                  (ctrl & E1000_CTRL_SLU) && (rxcw & E1000_RXCW_C)) {
3720                 DEBUGOUT
3721                     ("RXing /C/, enable AutoNeg and stop forcing link.\r\n");
3722                 E1000_WRITE_REG(hw, TXCW, hw->txcw);
3723                 E1000_WRITE_REG(hw, CTRL, (ctrl & ~E1000_CTRL_SLU));
3724         }
3725         return 0;
3726 }
3727
3728 /******************************************************************************
3729 * Configure the MAC-to-PHY interface for 10/100Mbps
3730 *
3731 * hw - Struct containing variables accessed by shared code
3732 ******************************************************************************/
3733 static int32_t
3734 e1000_configure_kmrn_for_10_100(struct e1000_hw *hw, uint16_t duplex)
3735 {
3736         int32_t ret_val = E1000_SUCCESS;
3737         uint32_t tipg;
3738         uint16_t reg_data;
3739
3740         DEBUGFUNC();
3741
3742         reg_data = E1000_KUMCTRLSTA_HD_CTRL_10_100_DEFAULT;
3743         ret_val = e1000_write_kmrn_reg(hw,
3744                         E1000_KUMCTRLSTA_OFFSET_HD_CTRL, reg_data);
3745         if (ret_val)
3746                 return ret_val;
3747
3748         /* Configure Transmit Inter-Packet Gap */
3749         tipg = E1000_READ_REG(hw, TIPG);
3750         tipg &= ~E1000_TIPG_IPGT_MASK;
3751         tipg |= DEFAULT_80003ES2LAN_TIPG_IPGT_10_100;
3752         E1000_WRITE_REG(hw, TIPG, tipg);
3753
3754         ret_val = e1000_read_phy_reg(hw, GG82563_PHY_KMRN_MODE_CTRL, &reg_data);
3755
3756         if (ret_val)
3757                 return ret_val;
3758
3759         if (duplex == HALF_DUPLEX)
3760                 reg_data |= GG82563_KMCR_PASS_FALSE_CARRIER;
3761         else
3762                 reg_data &= ~GG82563_KMCR_PASS_FALSE_CARRIER;
3763
3764         ret_val = e1000_write_phy_reg(hw, GG82563_PHY_KMRN_MODE_CTRL, reg_data);
3765
3766         return ret_val;
3767 }
3768
3769 static int32_t
3770 e1000_configure_kmrn_for_1000(struct e1000_hw *hw)
3771 {
3772         int32_t ret_val = E1000_SUCCESS;
3773         uint16_t reg_data;
3774         uint32_t tipg;
3775
3776         DEBUGFUNC();
3777
3778         reg_data = E1000_KUMCTRLSTA_HD_CTRL_1000_DEFAULT;
3779         ret_val = e1000_write_kmrn_reg(hw,
3780                         E1000_KUMCTRLSTA_OFFSET_HD_CTRL, reg_data);
3781         if (ret_val)
3782                 return ret_val;
3783
3784         /* Configure Transmit Inter-Packet Gap */
3785         tipg = E1000_READ_REG(hw, TIPG);
3786         tipg &= ~E1000_TIPG_IPGT_MASK;
3787         tipg |= DEFAULT_80003ES2LAN_TIPG_IPGT_1000;
3788         E1000_WRITE_REG(hw, TIPG, tipg);
3789
3790         ret_val = e1000_read_phy_reg(hw, GG82563_PHY_KMRN_MODE_CTRL, &reg_data);
3791
3792         if (ret_val)
3793                 return ret_val;
3794
3795         reg_data &= ~GG82563_KMCR_PASS_FALSE_CARRIER;
3796         ret_val = e1000_write_phy_reg(hw, GG82563_PHY_KMRN_MODE_CTRL, reg_data);
3797
3798         return ret_val;
3799 }
3800
3801 /******************************************************************************
3802  * Detects the current speed and duplex settings of the hardware.
3803  *
3804  * hw - Struct containing variables accessed by shared code
3805  * speed - Speed of the connection
3806  * duplex - Duplex setting of the connection
3807  *****************************************************************************/
3808 static int
3809 e1000_get_speed_and_duplex(struct e1000_hw *hw, uint16_t *speed,
3810                 uint16_t *duplex)
3811 {
3812         uint32_t status;
3813         int32_t ret_val;
3814         uint16_t phy_data;
3815
3816         DEBUGFUNC();
3817
3818         if (hw->mac_type >= e1000_82543) {
3819                 status = E1000_READ_REG(hw, STATUS);
3820                 if (status & E1000_STATUS_SPEED_1000) {
3821                         *speed = SPEED_1000;
3822                         DEBUGOUT("1000 Mbs, ");
3823                 } else if (status & E1000_STATUS_SPEED_100) {
3824                         *speed = SPEED_100;
3825                         DEBUGOUT("100 Mbs, ");
3826                 } else {
3827                         *speed = SPEED_10;
3828                         DEBUGOUT("10 Mbs, ");
3829                 }
3830
3831                 if (status & E1000_STATUS_FD) {
3832                         *duplex = FULL_DUPLEX;
3833                         DEBUGOUT("Full Duplex\r\n");
3834                 } else {
3835                         *duplex = HALF_DUPLEX;
3836                         DEBUGOUT(" Half Duplex\r\n");
3837                 }
3838         } else {
3839                 DEBUGOUT("1000 Mbs, Full Duplex\r\n");
3840                 *speed = SPEED_1000;
3841                 *duplex = FULL_DUPLEX;
3842         }
3843
3844         /* IGP01 PHY may advertise full duplex operation after speed downgrade
3845          * even if it is operating at half duplex.  Here we set the duplex
3846          * settings to match the duplex in the link partner's capabilities.
3847          */
3848         if (hw->phy_type == e1000_phy_igp && hw->speed_downgraded) {
3849                 ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_EXP, &phy_data);
3850                 if (ret_val)
3851                         return ret_val;
3852
3853                 if (!(phy_data & NWAY_ER_LP_NWAY_CAPS))
3854                         *duplex = HALF_DUPLEX;
3855                 else {
3856                         ret_val = e1000_read_phy_reg(hw,
3857                                         PHY_LP_ABILITY, &phy_data);
3858                         if (ret_val)
3859                                 return ret_val;
3860                         if ((*speed == SPEED_100 &&
3861                                 !(phy_data & NWAY_LPAR_100TX_FD_CAPS))
3862                                 || (*speed == SPEED_10
3863                                 && !(phy_data & NWAY_LPAR_10T_FD_CAPS)))
3864                                 *duplex = HALF_DUPLEX;
3865                 }
3866         }
3867
3868         if ((hw->mac_type == e1000_80003es2lan) &&
3869                 (hw->media_type == e1000_media_type_copper)) {
3870                 if (*speed == SPEED_1000)
3871                         ret_val = e1000_configure_kmrn_for_1000(hw);
3872                 else
3873                         ret_val = e1000_configure_kmrn_for_10_100(hw, *duplex);
3874                 if (ret_val)
3875                         return ret_val;
3876         }
3877         return E1000_SUCCESS;
3878 }
3879
3880 /******************************************************************************
3881 * Blocks until autoneg completes or times out (~4.5 seconds)
3882 *
3883 * hw - Struct containing variables accessed by shared code
3884 ******************************************************************************/
3885 static int
3886 e1000_wait_autoneg(struct e1000_hw *hw)
3887 {
3888         uint16_t i;
3889         uint16_t phy_data;
3890
3891         DEBUGFUNC();
3892         DEBUGOUT("Waiting for Auto-Neg to complete.\n");
3893
3894         /* We will wait for autoneg to complete or 4.5 seconds to expire. */
3895         for (i = PHY_AUTO_NEG_TIME; i > 0; i--) {
3896                 /* Read the MII Status Register and wait for Auto-Neg
3897                  * Complete bit to be set.
3898                  */
3899                 if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) {
3900                         DEBUGOUT("PHY Read Error\n");
3901                         return -E1000_ERR_PHY;
3902                 }
3903                 if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) {
3904                         DEBUGOUT("PHY Read Error\n");
3905                         return -E1000_ERR_PHY;
3906                 }
3907                 if (phy_data & MII_SR_AUTONEG_COMPLETE) {
3908                         DEBUGOUT("Auto-Neg complete.\n");
3909                         return 0;
3910                 }
3911                 mdelay(100);
3912         }
3913         DEBUGOUT("Auto-Neg timedout.\n");
3914         return -E1000_ERR_TIMEOUT;
3915 }
3916
3917 /******************************************************************************
3918 * Raises the Management Data Clock
3919 *
3920 * hw - Struct containing variables accessed by shared code
3921 * ctrl - Device control register's current value
3922 ******************************************************************************/
3923 static void
3924 e1000_raise_mdi_clk(struct e1000_hw *hw, uint32_t * ctrl)
3925 {
3926         /* Raise the clock input to the Management Data Clock (by setting the MDC
3927          * bit), and then delay 2 microseconds.
3928          */
3929         E1000_WRITE_REG(hw, CTRL, (*ctrl | E1000_CTRL_MDC));
3930         E1000_WRITE_FLUSH(hw);
3931         udelay(2);
3932 }
3933
3934 /******************************************************************************
3935 * Lowers the Management Data Clock
3936 *
3937 * hw - Struct containing variables accessed by shared code
3938 * ctrl - Device control register's current value
3939 ******************************************************************************/
3940 static void
3941 e1000_lower_mdi_clk(struct e1000_hw *hw, uint32_t * ctrl)
3942 {
3943         /* Lower the clock input to the Management Data Clock (by clearing the MDC
3944          * bit), and then delay 2 microseconds.
3945          */
3946         E1000_WRITE_REG(hw, CTRL, (*ctrl & ~E1000_CTRL_MDC));
3947         E1000_WRITE_FLUSH(hw);
3948         udelay(2);
3949 }
3950
3951 /******************************************************************************
3952 * Shifts data bits out to the PHY
3953 *
3954 * hw - Struct containing variables accessed by shared code
3955 * data - Data to send out to the PHY
3956 * count - Number of bits to shift out
3957 *
3958 * Bits are shifted out in MSB to LSB order.
3959 ******************************************************************************/
3960 static void
3961 e1000_shift_out_mdi_bits(struct e1000_hw *hw, uint32_t data, uint16_t count)
3962 {
3963         uint32_t ctrl;
3964         uint32_t mask;
3965
3966         /* We need to shift "count" number of bits out to the PHY. So, the value
3967          * in the "data" parameter will be shifted out to the PHY one bit at a
3968          * time. In order to do this, "data" must be broken down into bits.
3969          */
3970         mask = 0x01;
3971         mask <<= (count - 1);
3972
3973         ctrl = E1000_READ_REG(hw, CTRL);
3974
3975         /* Set MDIO_DIR and MDC_DIR direction bits to be used as output pins. */
3976         ctrl |= (E1000_CTRL_MDIO_DIR | E1000_CTRL_MDC_DIR);
3977
3978         while (mask) {
3979                 /* A "1" is shifted out to the PHY by setting the MDIO bit to "1" and
3980                  * then raising and lowering the Management Data Clock. A "0" is
3981                  * shifted out to the PHY by setting the MDIO bit to "0" and then
3982                  * raising and lowering the clock.
3983                  */
3984                 if (data & mask)
3985                         ctrl |= E1000_CTRL_MDIO;
3986                 else
3987                         ctrl &= ~E1000_CTRL_MDIO;
3988
3989                 E1000_WRITE_REG(hw, CTRL, ctrl);
3990                 E1000_WRITE_FLUSH(hw);
3991
3992                 udelay(2);
3993
3994                 e1000_raise_mdi_clk(hw, &ctrl);
3995                 e1000_lower_mdi_clk(hw, &ctrl);
3996
3997                 mask = mask >> 1;
3998         }
3999 }
4000
4001 /******************************************************************************
4002 * Shifts data bits in from the PHY
4003 *
4004 * hw - Struct containing variables accessed by shared code
4005 *
4006 * Bits are shifted in in MSB to LSB order.
4007 ******************************************************************************/
4008 static uint16_t
4009 e1000_shift_in_mdi_bits(struct e1000_hw *hw)
4010 {
4011         uint32_t ctrl;
4012         uint16_t data = 0;
4013         uint8_t i;
4014
4015         /* In order to read a register from the PHY, we need to shift in a total
4016          * of 18 bits from the PHY. The first two bit (turnaround) times are used
4017          * to avoid contention on the MDIO pin when a read operation is performed.
4018          * These two bits are ignored by us and thrown away. Bits are "shifted in"
4019          * by raising the input to the Management Data Clock (setting the MDC bit),
4020          * and then reading the value of the MDIO bit.
4021          */
4022         ctrl = E1000_READ_REG(hw, CTRL);
4023
4024         /* Clear MDIO_DIR (SWDPIO1) to indicate this bit is to be used as input. */
4025         ctrl &= ~E1000_CTRL_MDIO_DIR;
4026         ctrl &= ~E1000_CTRL_MDIO;
4027
4028         E1000_WRITE_REG(hw, CTRL, ctrl);
4029         E1000_WRITE_FLUSH(hw);
4030
4031         /* Raise and Lower the clock before reading in the data. This accounts for
4032          * the turnaround bits. The first clock occurred when we clocked out the
4033          * last bit of the Register Address.
4034          */
4035         e1000_raise_mdi_clk(hw, &ctrl);
4036         e1000_lower_mdi_clk(hw, &ctrl);
4037
4038         for (data = 0, i = 0; i < 16; i++) {
4039                 data = data << 1;
4040                 e1000_raise_mdi_clk(hw, &ctrl);
4041                 ctrl = E1000_READ_REG(hw, CTRL);
4042                 /* Check to see if we shifted in a "1". */
4043                 if (ctrl & E1000_CTRL_MDIO)
4044                         data |= 1;
4045                 e1000_lower_mdi_clk(hw, &ctrl);
4046         }
4047
4048         e1000_raise_mdi_clk(hw, &ctrl);
4049         e1000_lower_mdi_clk(hw, &ctrl);
4050
4051         return data;
4052 }
4053
4054 /*****************************************************************************
4055 * Reads the value from a PHY register
4056 *
4057 * hw - Struct containing variables accessed by shared code
4058 * reg_addr - address of the PHY register to read
4059 ******************************************************************************/
4060 static int
4061 e1000_read_phy_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t * phy_data)
4062 {
4063         uint32_t i;
4064         uint32_t mdic = 0;
4065         const uint32_t phy_addr = 1;
4066
4067         if (reg_addr > MAX_PHY_REG_ADDRESS) {
4068                 DEBUGOUT("PHY Address %d is out of range\n", reg_addr);
4069                 return -E1000_ERR_PARAM;
4070         }
4071
4072         if (hw->mac_type > e1000_82543) {
4073                 /* Set up Op-code, Phy Address, and register address in the MDI
4074                  * Control register.  The MAC will take care of interfacing with the
4075                  * PHY to retrieve the desired data.
4076                  */
4077                 mdic = ((reg_addr << E1000_MDIC_REG_SHIFT) |
4078                         (phy_addr << E1000_MDIC_PHY_SHIFT) |
4079                         (E1000_MDIC_OP_READ));
4080
4081                 E1000_WRITE_REG(hw, MDIC, mdic);
4082
4083                 /* Poll the ready bit to see if the MDI read completed */
4084                 for (i = 0; i < 64; i++) {
4085                         udelay(10);
4086                         mdic = E1000_READ_REG(hw, MDIC);
4087                         if (mdic & E1000_MDIC_READY)
4088                                 break;
4089                 }
4090                 if (!(mdic & E1000_MDIC_READY)) {
4091                         DEBUGOUT("MDI Read did not complete\n");
4092                         return -E1000_ERR_PHY;
4093                 }
4094                 if (mdic & E1000_MDIC_ERROR) {
4095                         DEBUGOUT("MDI Error\n");
4096                         return -E1000_ERR_PHY;
4097                 }
4098                 *phy_data = (uint16_t) mdic;
4099         } else {
4100                 /* We must first send a preamble through the MDIO pin to signal the
4101                  * beginning of an MII instruction.  This is done by sending 32
4102                  * consecutive "1" bits.
4103                  */
4104                 e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE);
4105
4106                 /* Now combine the next few fields that are required for a read
4107                  * operation.  We use this method instead of calling the
4108                  * e1000_shift_out_mdi_bits routine five different times. The format of
4109                  * a MII read instruction consists of a shift out of 14 bits and is
4110                  * defined as follows:
4111                  *    <Preamble><SOF><Op Code><Phy Addr><Reg Addr>
4112                  * followed by a shift in of 18 bits.  This first two bits shifted in
4113                  * are TurnAround bits used to avoid contention on the MDIO pin when a
4114                  * READ operation is performed.  These two bits are thrown away
4115                  * followed by a shift in of 16 bits which contains the desired data.
4116                  */
4117                 mdic = ((reg_addr) | (phy_addr << 5) |
4118                         (PHY_OP_READ << 10) | (PHY_SOF << 12));
4119
4120                 e1000_shift_out_mdi_bits(hw, mdic, 14);
4121
4122                 /* Now that we've shifted out the read command to the MII, we need to
4123                  * "shift in" the 16-bit value (18 total bits) of the requested PHY
4124                  * register address.
4125                  */
4126                 *phy_data = e1000_shift_in_mdi_bits(hw);
4127         }
4128         return 0;
4129 }
4130
4131 /******************************************************************************
4132 * Writes a value to a PHY register
4133 *
4134 * hw - Struct containing variables accessed by shared code
4135 * reg_addr - address of the PHY register to write
4136 * data - data to write to the PHY
4137 ******************************************************************************/
4138 static int
4139 e1000_write_phy_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t phy_data)
4140 {
4141         uint32_t i;
4142         uint32_t mdic = 0;
4143         const uint32_t phy_addr = 1;
4144
4145         if (reg_addr > MAX_PHY_REG_ADDRESS) {
4146                 DEBUGOUT("PHY Address %d is out of range\n", reg_addr);
4147                 return -E1000_ERR_PARAM;
4148         }
4149
4150         if (hw->mac_type > e1000_82543) {
4151                 /* Set up Op-code, Phy Address, register address, and data intended
4152                  * for the PHY register in the MDI Control register.  The MAC will take
4153                  * care of interfacing with the PHY to send the desired data.
4154                  */
4155                 mdic = (((uint32_t) phy_data) |
4156                         (reg_addr << E1000_MDIC_REG_SHIFT) |
4157                         (phy_addr << E1000_MDIC_PHY_SHIFT) |
4158                         (E1000_MDIC_OP_WRITE));
4159
4160                 E1000_WRITE_REG(hw, MDIC, mdic);
4161
4162                 /* Poll the ready bit to see if the MDI read completed */
4163                 for (i = 0; i < 64; i++) {
4164                         udelay(10);
4165                         mdic = E1000_READ_REG(hw, MDIC);
4166                         if (mdic & E1000_MDIC_READY)
4167                                 break;
4168                 }
4169                 if (!(mdic & E1000_MDIC_READY)) {
4170                         DEBUGOUT("MDI Write did not complete\n");
4171                         return -E1000_ERR_PHY;
4172                 }
4173         } else {
4174                 /* We'll need to use the SW defined pins to shift the write command
4175                  * out to the PHY. We first send a preamble to the PHY to signal the
4176                  * beginning of the MII instruction.  This is done by sending 32
4177                  * consecutive "1" bits.
4178                  */
4179                 e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE);
4180
4181                 /* Now combine the remaining required fields that will indicate a
4182                  * write operation. We use this method instead of calling the
4183                  * e1000_shift_out_mdi_bits routine for each field in the command. The
4184                  * format of a MII write instruction is as follows:
4185                  * <Preamble><SOF><Op Code><Phy Addr><Reg Addr><Turnaround><Data>.
4186                  */
4187                 mdic = ((PHY_TURNAROUND) | (reg_addr << 2) | (phy_addr << 7) |
4188                         (PHY_OP_WRITE << 12) | (PHY_SOF << 14));
4189                 mdic <<= 16;
4190                 mdic |= (uint32_t) phy_data;
4191
4192                 e1000_shift_out_mdi_bits(hw, mdic, 32);
4193         }
4194         return 0;
4195 }
4196
4197 /******************************************************************************
4198  * Checks if PHY reset is blocked due to SOL/IDER session, for example.
4199  * Returning E1000_BLK_PHY_RESET isn't necessarily an error.  But it's up to
4200  * the caller to figure out how to deal with it.
4201  *
4202  * hw - Struct containing variables accessed by shared code
4203  *
4204  * returns: - E1000_BLK_PHY_RESET
4205  *            E1000_SUCCESS
4206  *
4207  *****************************************************************************/
4208 int32_t
4209 e1000_check_phy_reset_block(struct e1000_hw *hw)
4210 {
4211         uint32_t manc = 0;
4212         uint32_t fwsm = 0;
4213
4214         if (hw->mac_type == e1000_ich8lan) {
4215                 fwsm = E1000_READ_REG(hw, FWSM);
4216                 return (fwsm & E1000_FWSM_RSPCIPHY) ? E1000_SUCCESS
4217                                                 : E1000_BLK_PHY_RESET;
4218         }
4219
4220         if (hw->mac_type > e1000_82547_rev_2)
4221                 manc = E1000_READ_REG(hw, MANC);
4222         return (manc & E1000_MANC_BLK_PHY_RST_ON_IDE) ?
4223                 E1000_BLK_PHY_RESET : E1000_SUCCESS;
4224 }
4225
4226 /***************************************************************************
4227  * Checks if the PHY configuration is done
4228  *
4229  * hw: Struct containing variables accessed by shared code
4230  *
4231  * returns: - E1000_ERR_RESET if fail to reset MAC
4232  *            E1000_SUCCESS at any other case.
4233  *
4234  ***************************************************************************/
4235 static int32_t
4236 e1000_get_phy_cfg_done(struct e1000_hw *hw)
4237 {
4238         int32_t timeout = PHY_CFG_TIMEOUT;
4239         uint32_t cfg_mask = E1000_EEPROM_CFG_DONE;
4240
4241         DEBUGFUNC();
4242
4243         switch (hw->mac_type) {
4244         default:
4245                 mdelay(10);
4246                 break;
4247
4248         case e1000_80003es2lan:
4249                 /* Separate *_CFG_DONE_* bit for each port */
4250                 if (e1000_is_second_port(hw))
4251                         cfg_mask = E1000_EEPROM_CFG_DONE_PORT_1;
4252                 /* Fall Through */
4253
4254         case e1000_82571:
4255         case e1000_82572:
4256                 while (timeout) {
4257                         if (E1000_READ_REG(hw, EEMNGCTL) & cfg_mask)
4258                                 break;
4259                         else
4260                                 mdelay(1);
4261                         timeout--;
4262                 }
4263                 if (!timeout) {
4264                         DEBUGOUT("MNG configuration cycle has not "
4265                                         "completed.\n");
4266                         return -E1000_ERR_RESET;
4267                 }
4268                 break;
4269         }
4270
4271         return E1000_SUCCESS;
4272 }
4273
4274 /******************************************************************************
4275 * Returns the PHY to the power-on reset state
4276 *
4277 * hw - Struct containing variables accessed by shared code
4278 ******************************************************************************/
4279 int32_t
4280 e1000_phy_hw_reset(struct e1000_hw *hw)
4281 {
4282         uint16_t swfw = E1000_SWFW_PHY0_SM;
4283         uint32_t ctrl, ctrl_ext;
4284         uint32_t led_ctrl;
4285         int32_t ret_val;
4286
4287         DEBUGFUNC();
4288
4289         /* In the case of the phy reset being blocked, it's not an error, we
4290          * simply return success without performing the reset. */
4291         ret_val = e1000_check_phy_reset_block(hw);
4292         if (ret_val)
4293                 return E1000_SUCCESS;
4294
4295         DEBUGOUT("Resetting Phy...\n");
4296
4297         if (hw->mac_type > e1000_82543) {
4298                 if (e1000_is_second_port(hw))
4299                         swfw = E1000_SWFW_PHY1_SM;
4300
4301                 if (e1000_swfw_sync_acquire(hw, swfw)) {
4302                         DEBUGOUT("Unable to acquire swfw sync\n");
4303                         return -E1000_ERR_SWFW_SYNC;
4304                 }
4305
4306                 /* Read the device control register and assert the E1000_CTRL_PHY_RST
4307                  * bit. Then, take it out of reset.
4308                  */
4309                 ctrl = E1000_READ_REG(hw, CTRL);
4310                 E1000_WRITE_REG(hw, CTRL, ctrl | E1000_CTRL_PHY_RST);
4311                 E1000_WRITE_FLUSH(hw);
4312
4313                 if (hw->mac_type < e1000_82571)
4314                         udelay(10);
4315                 else
4316                         udelay(100);
4317
4318                 E1000_WRITE_REG(hw, CTRL, ctrl);
4319                 E1000_WRITE_FLUSH(hw);
4320
4321                 if (hw->mac_type >= e1000_82571)
4322                         mdelay(10);
4323
4324         } else {
4325                 /* Read the Extended Device Control Register, assert the PHY_RESET_DIR
4326                  * bit to put the PHY into reset. Then, take it out of reset.
4327                  */
4328                 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
4329                 ctrl_ext |= E1000_CTRL_EXT_SDP4_DIR;
4330                 ctrl_ext &= ~E1000_CTRL_EXT_SDP4_DATA;
4331                 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
4332                 E1000_WRITE_FLUSH(hw);
4333                 mdelay(10);
4334                 ctrl_ext |= E1000_CTRL_EXT_SDP4_DATA;
4335                 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
4336                 E1000_WRITE_FLUSH(hw);
4337         }
4338         udelay(150);
4339
4340         if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
4341                 /* Configure activity LED after PHY reset */
4342                 led_ctrl = E1000_READ_REG(hw, LEDCTL);
4343                 led_ctrl &= IGP_ACTIVITY_LED_MASK;
4344                 led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
4345                 E1000_WRITE_REG(hw, LEDCTL, led_ctrl);
4346         }
4347
4348         /* Wait for FW to finish PHY configuration. */
4349         ret_val = e1000_get_phy_cfg_done(hw);
4350         if (ret_val != E1000_SUCCESS)
4351                 return ret_val;
4352
4353         return ret_val;
4354 }
4355
4356 /******************************************************************************
4357  * IGP phy init script - initializes the GbE PHY
4358  *
4359  * hw - Struct containing variables accessed by shared code
4360  *****************************************************************************/
4361 static void
4362 e1000_phy_init_script(struct e1000_hw *hw)
4363 {
4364         uint32_t ret_val;
4365         uint16_t phy_saved_data;
4366         DEBUGFUNC();
4367
4368         if (hw->phy_init_script) {
4369                 mdelay(20);
4370
4371                 /* Save off the current value of register 0x2F5B to be
4372                  * restored at the end of this routine. */
4373                 ret_val = e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data);
4374
4375                 /* Disabled the PHY transmitter */
4376                 e1000_write_phy_reg(hw, 0x2F5B, 0x0003);
4377
4378                 mdelay(20);
4379
4380                 e1000_write_phy_reg(hw, 0x0000, 0x0140);
4381
4382                 mdelay(5);
4383
4384                 switch (hw->mac_type) {
4385                 case e1000_82541:
4386                 case e1000_82547:
4387                         e1000_write_phy_reg(hw, 0x1F95, 0x0001);
4388
4389                         e1000_write_phy_reg(hw, 0x1F71, 0xBD21);
4390
4391                         e1000_write_phy_reg(hw, 0x1F79, 0x0018);
4392
4393                         e1000_write_phy_reg(hw, 0x1F30, 0x1600);
4394
4395                         e1000_write_phy_reg(hw, 0x1F31, 0x0014);
4396
4397                         e1000_write_phy_reg(hw, 0x1F32, 0x161C);
4398
4399                         e1000_write_phy_reg(hw, 0x1F94, 0x0003);
4400
4401                         e1000_write_phy_reg(hw, 0x1F96, 0x003F);
4402
4403                         e1000_write_phy_reg(hw, 0x2010, 0x0008);
4404                         break;
4405
4406                 case e1000_82541_rev_2:
4407                 case e1000_82547_rev_2:
4408                         e1000_write_phy_reg(hw, 0x1F73, 0x0099);
4409                         break;
4410                 default:
4411                         break;
4412                 }
4413
4414                 e1000_write_phy_reg(hw, 0x0000, 0x3300);
4415
4416                 mdelay(20);
4417
4418                 /* Now enable the transmitter */
4419                 if (!ret_val)
4420                         e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data);
4421
4422                 if (hw->mac_type == e1000_82547) {
4423                         uint16_t fused, fine, coarse;
4424
4425                         /* Move to analog registers page */
4426                         e1000_read_phy_reg(hw,
4427                                 IGP01E1000_ANALOG_SPARE_FUSE_STATUS, &fused);
4428
4429                         if (!(fused & IGP01E1000_ANALOG_SPARE_FUSE_ENABLED)) {
4430                                 e1000_read_phy_reg(hw,
4431                                         IGP01E1000_ANALOG_FUSE_STATUS, &fused);
4432
4433                                 fine = fused & IGP01E1000_ANALOG_FUSE_FINE_MASK;
4434                                 coarse = fused
4435                                         & IGP01E1000_ANALOG_FUSE_COARSE_MASK;
4436
4437                                 if (coarse >
4438                                         IGP01E1000_ANALOG_FUSE_COARSE_THRESH) {
4439                                         coarse -=
4440                                         IGP01E1000_ANALOG_FUSE_COARSE_10;
4441                                         fine -= IGP01E1000_ANALOG_FUSE_FINE_1;
4442                                 } else if (coarse
4443                                         == IGP01E1000_ANALOG_FUSE_COARSE_THRESH)
4444                                         fine -= IGP01E1000_ANALOG_FUSE_FINE_10;
4445
4446                                 fused = (fused
4447                                         & IGP01E1000_ANALOG_FUSE_POLY_MASK) |
4448                                         (fine
4449                                         & IGP01E1000_ANALOG_FUSE_FINE_MASK) |
4450                                         (coarse
4451                                         & IGP01E1000_ANALOG_FUSE_COARSE_MASK);
4452
4453                                 e1000_write_phy_reg(hw,
4454                                         IGP01E1000_ANALOG_FUSE_CONTROL, fused);
4455                                 e1000_write_phy_reg(hw,
4456                                         IGP01E1000_ANALOG_FUSE_BYPASS,
4457                                 IGP01E1000_ANALOG_FUSE_ENABLE_SW_CONTROL);
4458                         }
4459                 }
4460         }
4461 }
4462
4463 /******************************************************************************
4464 * Resets the PHY
4465 *
4466 * hw - Struct containing variables accessed by shared code
4467 *
4468 * Sets bit 15 of the MII Control register
4469 ******************************************************************************/
4470 int32_t
4471 e1000_phy_reset(struct e1000_hw *hw)
4472 {
4473         int32_t ret_val;
4474         uint16_t phy_data;
4475
4476         DEBUGFUNC();
4477
4478         /* In the case of the phy reset being blocked, it's not an error, we
4479          * simply return success without performing the reset. */
4480         ret_val = e1000_check_phy_reset_block(hw);
4481         if (ret_val)
4482                 return E1000_SUCCESS;
4483
4484         switch (hw->phy_type) {
4485         case e1000_phy_igp:
4486         case e1000_phy_igp_2:
4487         case e1000_phy_igp_3:
4488         case e1000_phy_ife:
4489                 ret_val = e1000_phy_hw_reset(hw);
4490                 if (ret_val)
4491                         return ret_val;
4492                 break;
4493         default:
4494                 ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data);
4495                 if (ret_val)
4496                         return ret_val;
4497
4498                 phy_data |= MII_CR_RESET;
4499                 ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data);
4500                 if (ret_val)
4501                         return ret_val;
4502
4503                 udelay(1);
4504                 break;
4505         }
4506
4507         if (hw->phy_type == e1000_phy_igp || hw->phy_type == e1000_phy_igp_2)
4508                 e1000_phy_init_script(hw);
4509
4510         return E1000_SUCCESS;
4511 }
4512
4513 static int e1000_set_phy_type (struct e1000_hw *hw)
4514 {
4515         DEBUGFUNC ();
4516
4517         if (hw->mac_type == e1000_undefined)
4518                 return -E1000_ERR_PHY_TYPE;
4519
4520         switch (hw->phy_id) {
4521         case M88E1000_E_PHY_ID:
4522         case M88E1000_I_PHY_ID:
4523         case M88E1011_I_PHY_ID:
4524         case M88E1111_I_PHY_ID:
4525                 hw->phy_type = e1000_phy_m88;
4526                 break;
4527         case IGP01E1000_I_PHY_ID:
4528                 if (hw->mac_type == e1000_82541 ||
4529                         hw->mac_type == e1000_82541_rev_2 ||
4530                         hw->mac_type == e1000_82547 ||
4531                         hw->mac_type == e1000_82547_rev_2) {
4532                         hw->phy_type = e1000_phy_igp;
4533                         hw->phy_type = e1000_phy_igp;
4534                         break;
4535                 }
4536         case IGP03E1000_E_PHY_ID:
4537                 hw->phy_type = e1000_phy_igp_3;
4538                 break;
4539         case IFE_E_PHY_ID:
4540         case IFE_PLUS_E_PHY_ID:
4541         case IFE_C_E_PHY_ID:
4542                 hw->phy_type = e1000_phy_ife;
4543                 break;
4544         case GG82563_E_PHY_ID:
4545                 if (hw->mac_type == e1000_80003es2lan) {
4546                         hw->phy_type = e1000_phy_gg82563;
4547                         break;
4548                 }
4549         case BME1000_E_PHY_ID:
4550                 hw->phy_type = e1000_phy_bm;
4551                 break;
4552                 /* Fall Through */
4553         default:
4554                 /* Should never have loaded on this device */
4555                 hw->phy_type = e1000_phy_undefined;
4556                 return -E1000_ERR_PHY_TYPE;
4557         }
4558
4559         return E1000_SUCCESS;
4560 }
4561
4562 /******************************************************************************
4563 * Probes the expected PHY address for known PHY IDs
4564 *
4565 * hw - Struct containing variables accessed by shared code
4566 ******************************************************************************/
4567 static int32_t
4568 e1000_detect_gig_phy(struct e1000_hw *hw)
4569 {
4570         int32_t phy_init_status, ret_val;
4571         uint16_t phy_id_high, phy_id_low;
4572         bool match = false;
4573
4574         DEBUGFUNC();
4575
4576         /* The 82571 firmware may still be configuring the PHY.  In this
4577          * case, we cannot access the PHY until the configuration is done.  So
4578          * we explicitly set the PHY values. */
4579         if (hw->mac_type == e1000_82571 ||
4580                 hw->mac_type == e1000_82572) {
4581                 hw->phy_id = IGP01E1000_I_PHY_ID;
4582                 hw->phy_type = e1000_phy_igp_2;
4583                 return E1000_SUCCESS;
4584         }
4585
4586         /* ESB-2 PHY reads require e1000_phy_gg82563 to be set because of a
4587          * work- around that forces PHY page 0 to be set or the reads fail.
4588          * The rest of the code in this routine uses e1000_read_phy_reg to
4589          * read the PHY ID.  So for ESB-2 we need to have this set so our
4590          * reads won't fail.  If the attached PHY is not a e1000_phy_gg82563,
4591          * the routines below will figure this out as well. */
4592         if (hw->mac_type == e1000_80003es2lan)
4593                 hw->phy_type = e1000_phy_gg82563;
4594
4595         /* Read the PHY ID Registers to identify which PHY is onboard. */
4596         ret_val = e1000_read_phy_reg(hw, PHY_ID1, &phy_id_high);
4597         if (ret_val)
4598                 return ret_val;
4599
4600         hw->phy_id = (uint32_t) (phy_id_high << 16);
4601         udelay(20);
4602         ret_val = e1000_read_phy_reg(hw, PHY_ID2, &phy_id_low);
4603         if (ret_val)
4604                 return ret_val;
4605
4606         hw->phy_id |= (uint32_t) (phy_id_low & PHY_REVISION_MASK);
4607         hw->phy_revision = (uint32_t) phy_id_low & ~PHY_REVISION_MASK;
4608
4609         switch (hw->mac_type) {
4610         case e1000_82543:
4611                 if (hw->phy_id == M88E1000_E_PHY_ID)
4612                         match = true;
4613                 break;
4614         case e1000_82544:
4615                 if (hw->phy_id == M88E1000_I_PHY_ID)
4616                         match = true;
4617                 break;
4618         case e1000_82540:
4619         case e1000_82545:
4620         case e1000_82545_rev_3:
4621         case e1000_82546:
4622         case e1000_82546_rev_3:
4623                 if (hw->phy_id == M88E1011_I_PHY_ID)
4624                         match = true;
4625                 break;
4626         case e1000_82541:
4627         case e1000_82541_rev_2:
4628         case e1000_82547:
4629         case e1000_82547_rev_2:
4630                 if(hw->phy_id == IGP01E1000_I_PHY_ID)
4631                         match = true;
4632
4633                 break;
4634         case e1000_82573:
4635                 if (hw->phy_id == M88E1111_I_PHY_ID)
4636                         match = true;
4637                 break;
4638         case e1000_82574:
4639                 if (hw->phy_id == BME1000_E_PHY_ID)
4640                         match = true;
4641                 break;
4642         case e1000_80003es2lan:
4643                 if (hw->phy_id == GG82563_E_PHY_ID)
4644                         match = true;
4645                 break;
4646         case e1000_ich8lan:
4647                 if (hw->phy_id == IGP03E1000_E_PHY_ID)
4648                         match = true;
4649                 if (hw->phy_id == IFE_E_PHY_ID)
4650                         match = true;
4651                 if (hw->phy_id == IFE_PLUS_E_PHY_ID)
4652                         match = true;
4653                 if (hw->phy_id == IFE_C_E_PHY_ID)
4654                         match = true;
4655                 break;
4656         default:
4657                 DEBUGOUT("Invalid MAC type %d\n", hw->mac_type);
4658                 return -E1000_ERR_CONFIG;
4659         }
4660
4661         phy_init_status = e1000_set_phy_type(hw);
4662
4663         if ((match) && (phy_init_status == E1000_SUCCESS)) {
4664                 DEBUGOUT("PHY ID 0x%X detected\n", hw->phy_id);
4665                 return 0;
4666         }
4667         DEBUGOUT("Invalid PHY ID 0x%X\n", hw->phy_id);
4668         return -E1000_ERR_PHY;
4669 }
4670
4671 /*****************************************************************************
4672  * Set media type and TBI compatibility.
4673  *
4674  * hw - Struct containing variables accessed by shared code
4675  * **************************************************************************/
4676 void
4677 e1000_set_media_type(struct e1000_hw *hw)
4678 {
4679         uint32_t status;
4680
4681         DEBUGFUNC();
4682
4683         if (hw->mac_type != e1000_82543) {
4684                 /* tbi_compatibility is only valid on 82543 */
4685                 hw->tbi_compatibility_en = false;
4686         }
4687
4688         switch (hw->device_id) {
4689         case E1000_DEV_ID_82545GM_SERDES:
4690         case E1000_DEV_ID_82546GB_SERDES:
4691         case E1000_DEV_ID_82571EB_SERDES:
4692         case E1000_DEV_ID_82571EB_SERDES_DUAL:
4693         case E1000_DEV_ID_82571EB_SERDES_QUAD:
4694         case E1000_DEV_ID_82572EI_SERDES:
4695         case E1000_DEV_ID_80003ES2LAN_SERDES_DPT:
4696                 hw->media_type = e1000_media_type_internal_serdes;
4697                 break;
4698         default:
4699                 switch (hw->mac_type) {
4700                 case e1000_82542_rev2_0:
4701                 case e1000_82542_rev2_1:
4702                         hw->media_type = e1000_media_type_fiber;
4703                         break;
4704                 case e1000_ich8lan:
4705                 case e1000_82573:
4706                 case e1000_82574:
4707                         /* The STATUS_TBIMODE bit is reserved or reused
4708                          * for the this device.
4709                          */
4710                         hw->media_type = e1000_media_type_copper;
4711                         break;
4712                 default:
4713                         status = E1000_READ_REG(hw, STATUS);
4714                         if (status & E1000_STATUS_TBIMODE) {
4715                                 hw->media_type = e1000_media_type_fiber;
4716                                 /* tbi_compatibility not valid on fiber */
4717                                 hw->tbi_compatibility_en = false;
4718                         } else {
4719                                 hw->media_type = e1000_media_type_copper;
4720                         }
4721                         break;
4722                 }
4723         }
4724 }
4725
4726 /**
4727  * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
4728  *
4729  * e1000_sw_init initializes the Adapter private data structure.
4730  * Fields are initialized based on PCI device information and
4731  * OS network device settings (MTU size).
4732  **/
4733
4734 static int
4735 e1000_sw_init(struct eth_device *nic)
4736 {
4737         struct e1000_hw *hw = (typeof(hw)) nic->priv;
4738         int result;
4739
4740         /* PCI config space info */
4741         pci_read_config_word(hw->pdev, PCI_VENDOR_ID, &hw->vendor_id);
4742         pci_read_config_word(hw->pdev, PCI_DEVICE_ID, &hw->device_id);
4743         pci_read_config_word(hw->pdev, PCI_SUBSYSTEM_VENDOR_ID,
4744                              &hw->subsystem_vendor_id);
4745         pci_read_config_word(hw->pdev, PCI_SUBSYSTEM_ID, &hw->subsystem_id);
4746
4747         pci_read_config_byte(hw->pdev, PCI_REVISION_ID, &hw->revision_id);
4748         pci_read_config_word(hw->pdev, PCI_COMMAND, &hw->pci_cmd_word);
4749
4750         /* identify the MAC */
4751         result = e1000_set_mac_type(hw);
4752         if (result) {
4753                 E1000_ERR(hw->nic, "Unknown MAC Type\n");
4754                 return result;
4755         }
4756
4757         switch (hw->mac_type) {
4758         default:
4759                 break;
4760         case e1000_82541:
4761         case e1000_82547:
4762         case e1000_82541_rev_2:
4763         case e1000_82547_rev_2:
4764                 hw->phy_init_script = 1;
4765                 break;
4766         }
4767
4768         /* flow control settings */
4769         hw->fc_high_water = E1000_FC_HIGH_THRESH;
4770         hw->fc_low_water = E1000_FC_LOW_THRESH;
4771         hw->fc_pause_time = E1000_FC_PAUSE_TIME;
4772         hw->fc_send_xon = 1;
4773
4774         /* Media type - copper or fiber */
4775         e1000_set_media_type(hw);
4776
4777         if (hw->mac_type >= e1000_82543) {
4778                 uint32_t status = E1000_READ_REG(hw, STATUS);
4779
4780                 if (status & E1000_STATUS_TBIMODE) {
4781                         DEBUGOUT("fiber interface\n");
4782                         hw->media_type = e1000_media_type_fiber;
4783                 } else {
4784                         DEBUGOUT("copper interface\n");
4785                         hw->media_type = e1000_media_type_copper;
4786                 }
4787         } else {
4788                 hw->media_type = e1000_media_type_fiber;
4789         }
4790
4791         hw->tbi_compatibility_en = true;
4792         hw->wait_autoneg_complete = true;
4793         if (hw->mac_type < e1000_82543)
4794                 hw->report_tx_early = 0;
4795         else
4796                 hw->report_tx_early = 1;
4797
4798         return E1000_SUCCESS;
4799 }
4800
4801 void
4802 fill_rx(struct e1000_hw *hw)
4803 {
4804         struct e1000_rx_desc *rd;
4805
4806         rx_last = rx_tail;
4807         rd = rx_base + rx_tail;
4808         rx_tail = (rx_tail + 1) % 8;
4809         memset(rd, 0, 16);
4810         rd->buffer_addr = cpu_to_le64((u32) & packet);
4811         E1000_WRITE_REG(hw, RDT, rx_tail);
4812 }
4813
4814 /**
4815  * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
4816  * @adapter: board private structure
4817  *
4818  * Configure the Tx unit of the MAC after a reset.
4819  **/
4820
4821 static void
4822 e1000_configure_tx(struct e1000_hw *hw)
4823 {
4824         unsigned long ptr;
4825         unsigned long tctl;
4826         unsigned long tipg, tarc;
4827         uint32_t ipgr1, ipgr2;
4828
4829         ptr = (u32) tx_pool;
4830         if (ptr & 0xf)
4831                 ptr = (ptr + 0x10) & (~0xf);
4832
4833         tx_base = (typeof(tx_base)) ptr;
4834
4835         E1000_WRITE_REG(hw, TDBAL, (u32) tx_base);
4836         E1000_WRITE_REG(hw, TDBAH, 0);
4837
4838         E1000_WRITE_REG(hw, TDLEN, 128);
4839
4840         /* Setup the HW Tx Head and Tail descriptor pointers */
4841         E1000_WRITE_REG(hw, TDH, 0);
4842         E1000_WRITE_REG(hw, TDT, 0);
4843         tx_tail = 0;
4844
4845         /* Set the default values for the Tx Inter Packet Gap timer */
4846         if (hw->mac_type <= e1000_82547_rev_2 &&
4847             (hw->media_type == e1000_media_type_fiber ||
4848              hw->media_type == e1000_media_type_internal_serdes))
4849                 tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
4850         else
4851                 tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
4852
4853         /* Set the default values for the Tx Inter Packet Gap timer */
4854         switch (hw->mac_type) {
4855         case e1000_82542_rev2_0:
4856         case e1000_82542_rev2_1:
4857                 tipg = DEFAULT_82542_TIPG_IPGT;
4858                 ipgr1 = DEFAULT_82542_TIPG_IPGR1;
4859                 ipgr2 = DEFAULT_82542_TIPG_IPGR2;
4860                 break;
4861         case e1000_80003es2lan:
4862                 ipgr1 = DEFAULT_82543_TIPG_IPGR1;
4863                 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2;
4864                 break;
4865         default:
4866                 ipgr1 = DEFAULT_82543_TIPG_IPGR1;
4867                 ipgr2 = DEFAULT_82543_TIPG_IPGR2;
4868                 break;
4869         }
4870         tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
4871         tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
4872         E1000_WRITE_REG(hw, TIPG, tipg);
4873         /* Program the Transmit Control Register */
4874         tctl = E1000_READ_REG(hw, TCTL);
4875         tctl &= ~E1000_TCTL_CT;
4876         tctl |= E1000_TCTL_EN | E1000_TCTL_PSP |
4877             (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
4878
4879         if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) {
4880                 tarc = E1000_READ_REG(hw, TARC0);
4881                 /* set the speed mode bit, we'll clear it if we're not at
4882                  * gigabit link later */
4883                 /* git bit can be set to 1*/
4884         } else if (hw->mac_type == e1000_80003es2lan) {
4885                 tarc = E1000_READ_REG(hw, TARC0);
4886                 tarc |= 1;
4887                 E1000_WRITE_REG(hw, TARC0, tarc);
4888                 tarc = E1000_READ_REG(hw, TARC1);
4889                 tarc |= 1;
4890                 E1000_WRITE_REG(hw, TARC1, tarc);
4891         }
4892
4893
4894         e1000_config_collision_dist(hw);
4895         /* Setup Transmit Descriptor Settings for eop descriptor */
4896         hw->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
4897
4898         /* Need to set up RS bit */
4899         if (hw->mac_type < e1000_82543)
4900                 hw->txd_cmd |= E1000_TXD_CMD_RPS;
4901         else
4902                 hw->txd_cmd |= E1000_TXD_CMD_RS;
4903         E1000_WRITE_REG(hw, TCTL, tctl);
4904 }
4905
4906 /**
4907  * e1000_setup_rctl - configure the receive control register
4908  * @adapter: Board private structure
4909  **/
4910 static void
4911 e1000_setup_rctl(struct e1000_hw *hw)
4912 {
4913         uint32_t rctl;
4914
4915         rctl = E1000_READ_REG(hw, RCTL);
4916
4917         rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
4918
4919         rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_LBM_NO
4920                 | E1000_RCTL_RDMTS_HALF;        /* |
4921                         (hw.mc_filter_type << E1000_RCTL_MO_SHIFT); */
4922
4923         if (hw->tbi_compatibility_on == 1)
4924                 rctl |= E1000_RCTL_SBP;
4925         else
4926                 rctl &= ~E1000_RCTL_SBP;
4927
4928         rctl &= ~(E1000_RCTL_SZ_4096);
4929                 rctl |= E1000_RCTL_SZ_2048;
4930                 rctl &= ~(E1000_RCTL_BSEX | E1000_RCTL_LPE);
4931         E1000_WRITE_REG(hw, RCTL, rctl);
4932 }
4933
4934 /**
4935  * e1000_configure_rx - Configure 8254x Receive Unit after Reset
4936  * @adapter: board private structure
4937  *
4938  * Configure the Rx unit of the MAC after a reset.
4939  **/
4940 static void
4941 e1000_configure_rx(struct e1000_hw *hw)
4942 {
4943         unsigned long ptr;
4944         unsigned long rctl, ctrl_ext;
4945         rx_tail = 0;
4946         /* make sure receives are disabled while setting up the descriptors */
4947         rctl = E1000_READ_REG(hw, RCTL);
4948         E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN);
4949         if (hw->mac_type >= e1000_82540) {
4950                 /* Set the interrupt throttling rate.  Value is calculated
4951                  * as DEFAULT_ITR = 1/(MAX_INTS_PER_SEC * 256ns) */
4952 #define MAX_INTS_PER_SEC        8000
4953 #define DEFAULT_ITR             1000000000/(MAX_INTS_PER_SEC * 256)
4954                 E1000_WRITE_REG(hw, ITR, DEFAULT_ITR);
4955         }
4956
4957         if (hw->mac_type >= e1000_82571) {
4958                 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
4959                 /* Reset delay timers after every interrupt */
4960                 ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR;
4961                 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
4962                 E1000_WRITE_FLUSH(hw);
4963         }
4964         /* Setup the Base and Length of the Rx Descriptor Ring */
4965         ptr = (u32) rx_pool;
4966         if (ptr & 0xf)
4967                 ptr = (ptr + 0x10) & (~0xf);
4968         rx_base = (typeof(rx_base)) ptr;
4969         E1000_WRITE_REG(hw, RDBAL, (u32) rx_base);
4970         E1000_WRITE_REG(hw, RDBAH, 0);
4971
4972         E1000_WRITE_REG(hw, RDLEN, 128);
4973
4974         /* Setup the HW Rx Head and Tail Descriptor Pointers */
4975         E1000_WRITE_REG(hw, RDH, 0);
4976         E1000_WRITE_REG(hw, RDT, 0);
4977         /* Enable Receives */
4978
4979         E1000_WRITE_REG(hw, RCTL, rctl);
4980         fill_rx(hw);
4981 }
4982
4983 /**************************************************************************
4984 POLL - Wait for a frame
4985 ***************************************************************************/
4986 static int
4987 e1000_poll(struct eth_device *nic)
4988 {
4989         struct e1000_hw *hw = nic->priv;
4990         struct e1000_rx_desc *rd;
4991         /* return true if there's an ethernet packet ready to read */
4992         rd = rx_base + rx_last;
4993         if (!(le32_to_cpu(rd->status)) & E1000_RXD_STAT_DD)
4994                 return 0;
4995         /*DEBUGOUT("recv: packet len=%d \n", rd->length); */
4996         NetReceive((uchar *)packet, le32_to_cpu(rd->length));
4997         fill_rx(hw);
4998         return 1;
4999 }
5000
5001 /**************************************************************************
5002 TRANSMIT - Transmit a frame
5003 ***************************************************************************/
5004 static int e1000_transmit(struct eth_device *nic, void *packet, int length)
5005 {
5006         void *nv_packet = (void *)packet;
5007         struct e1000_hw *hw = nic->priv;
5008         struct e1000_tx_desc *txp;
5009         int i = 0;
5010
5011         txp = tx_base + tx_tail;
5012         tx_tail = (tx_tail + 1) % 8;
5013
5014         txp->buffer_addr = cpu_to_le64(virt_to_bus(hw->pdev, nv_packet));
5015         txp->lower.data = cpu_to_le32(hw->txd_cmd | length);
5016         txp->upper.data = 0;
5017         E1000_WRITE_REG(hw, TDT, tx_tail);
5018
5019         E1000_WRITE_FLUSH(hw);
5020         while (!(le32_to_cpu(txp->upper.data) & E1000_TXD_STAT_DD)) {
5021                 if (i++ > TOUT_LOOP) {
5022                         DEBUGOUT("e1000: tx timeout\n");
5023                         return 0;
5024                 }
5025                 udelay(10);     /* give the nic a chance to write to the register */
5026         }
5027         return 1;
5028 }
5029
5030 /*reset function*/
5031 static inline int
5032 e1000_reset(struct eth_device *nic)
5033 {
5034         struct e1000_hw *hw = nic->priv;
5035
5036         e1000_reset_hw(hw);
5037         if (hw->mac_type >= e1000_82544) {
5038                 E1000_WRITE_REG(hw, WUC, 0);
5039         }
5040         return e1000_init_hw(nic);
5041 }
5042
5043 /**************************************************************************
5044 DISABLE - Turn off ethernet interface
5045 ***************************************************************************/
5046 static void
5047 e1000_disable(struct eth_device *nic)
5048 {
5049         struct e1000_hw *hw = nic->priv;
5050
5051         /* Turn off the ethernet interface */
5052         E1000_WRITE_REG(hw, RCTL, 0);
5053         E1000_WRITE_REG(hw, TCTL, 0);
5054
5055         /* Clear the transmit ring */
5056         E1000_WRITE_REG(hw, TDH, 0);
5057         E1000_WRITE_REG(hw, TDT, 0);
5058
5059         /* Clear the receive ring */
5060         E1000_WRITE_REG(hw, RDH, 0);
5061         E1000_WRITE_REG(hw, RDT, 0);
5062
5063         /* put the card in its initial state */
5064 #if 0
5065         E1000_WRITE_REG(hw, CTRL, E1000_CTRL_RST);
5066 #endif
5067         mdelay(10);
5068
5069 }
5070
5071 /**************************************************************************
5072 INIT - set up ethernet interface(s)
5073 ***************************************************************************/
5074 static int
5075 e1000_init(struct eth_device *nic, bd_t * bis)
5076 {
5077         struct e1000_hw *hw = nic->priv;
5078         int ret_val = 0;
5079
5080         ret_val = e1000_reset(nic);
5081         if (ret_val < 0) {
5082                 if ((ret_val == -E1000_ERR_NOLINK) ||
5083                     (ret_val == -E1000_ERR_TIMEOUT)) {
5084                         E1000_ERR(hw->nic, "Valid Link not detected\n");
5085                 } else {
5086                         E1000_ERR(hw->nic, "Hardware Initialization Failed\n");
5087                 }
5088                 return 0;
5089         }
5090         e1000_configure_tx(hw);
5091         e1000_setup_rctl(hw);
5092         e1000_configure_rx(hw);
5093         return 1;
5094 }
5095
5096 /******************************************************************************
5097  * Gets the current PCI bus type of hardware
5098  *
5099  * hw - Struct containing variables accessed by shared code
5100  *****************************************************************************/
5101 void e1000_get_bus_type(struct e1000_hw *hw)
5102 {
5103         uint32_t status;
5104
5105         switch (hw->mac_type) {
5106         case e1000_82542_rev2_0:
5107         case e1000_82542_rev2_1:
5108                 hw->bus_type = e1000_bus_type_pci;
5109                 break;
5110         case e1000_82571:
5111         case e1000_82572:
5112         case e1000_82573:
5113         case e1000_82574:
5114         case e1000_80003es2lan:
5115                 hw->bus_type = e1000_bus_type_pci_express;
5116                 break;
5117         case e1000_ich8lan:
5118                 hw->bus_type = e1000_bus_type_pci_express;
5119                 break;
5120         default:
5121                 status = E1000_READ_REG(hw, STATUS);
5122                 hw->bus_type = (status & E1000_STATUS_PCIX_MODE) ?
5123                                 e1000_bus_type_pcix : e1000_bus_type_pci;
5124                 break;
5125         }
5126 }
5127
5128 /* A list of all registered e1000 devices */
5129 static LIST_HEAD(e1000_hw_list);
5130
5131 /**************************************************************************
5132 PROBE - Look for an adapter, this routine's visible to the outside
5133 You should omit the last argument struct pci_device * for a non-PCI NIC
5134 ***************************************************************************/
5135 int
5136 e1000_initialize(bd_t * bis)
5137 {
5138         unsigned int i;
5139         pci_dev_t devno;
5140
5141         DEBUGFUNC();
5142
5143         /* Find and probe all the matching PCI devices */
5144         for (i = 0; (devno = pci_find_devices(e1000_supported, i)) >= 0; i++) {
5145                 u32 val;
5146
5147                 /*
5148                  * These will never get freed due to errors, this allows us to
5149                  * perform SPI EEPROM programming from U-boot, for example.
5150                  */
5151                 struct eth_device *nic = malloc(sizeof(*nic));
5152                 struct e1000_hw *hw = malloc(sizeof(*hw));
5153                 if (!nic || !hw) {
5154                         printf("e1000#%u: Out of Memory!\n", i);
5155                         free(nic);
5156                         free(hw);
5157                         continue;
5158                 }
5159
5160                 /* Make sure all of the fields are initially zeroed */
5161                 memset(nic, 0, sizeof(*nic));
5162                 memset(hw, 0, sizeof(*hw));
5163
5164                 /* Assign the passed-in values */
5165                 hw->cardnum = i;
5166                 hw->pdev = devno;
5167                 hw->nic = nic;
5168                 nic->priv = hw;
5169
5170                 /* Generate a card name */
5171                 sprintf(nic->name, "e1000#%u", hw->cardnum);
5172
5173                 /* Print a debug message with the IO base address */
5174                 pci_read_config_dword(devno, PCI_BASE_ADDRESS_0, &val);
5175                 E1000_DBG(nic, "iobase 0x%08x\n", val & 0xfffffff0);
5176
5177                 /* Try to enable I/O accesses and bus-mastering */
5178                 val = PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER;
5179                 pci_write_config_dword(devno, PCI_COMMAND, val);
5180
5181                 /* Make sure it worked */
5182                 pci_read_config_dword(devno, PCI_COMMAND, &val);
5183                 if (!(val & PCI_COMMAND_MEMORY)) {
5184                         E1000_ERR(nic, "Can't enable I/O memory\n");
5185                         continue;
5186                 }
5187                 if (!(val & PCI_COMMAND_MASTER)) {
5188                         E1000_ERR(nic, "Can't enable bus-mastering\n");
5189                         continue;
5190                 }
5191
5192                 /* Are these variables needed? */
5193                 hw->fc = e1000_fc_default;
5194                 hw->original_fc = e1000_fc_default;
5195                 hw->autoneg_failed = 0;
5196                 hw->autoneg = 1;
5197                 hw->get_link_status = true;
5198                 hw->hw_addr = pci_map_bar(devno,        PCI_BASE_ADDRESS_0,
5199                                                         PCI_REGION_MEM);
5200                 hw->mac_type = e1000_undefined;
5201
5202                 /* MAC and Phy settings */
5203                 if (e1000_sw_init(nic) < 0) {
5204                         E1000_ERR(nic, "Software init failed\n");
5205                         continue;
5206                 }
5207                 if (e1000_check_phy_reset_block(hw))
5208                         E1000_ERR(nic, "PHY Reset is blocked!\n");
5209
5210                 /* Basic init was OK, reset the hardware and allow SPI access */
5211                 e1000_reset_hw(hw);
5212                 list_add_tail(&hw->list_node, &e1000_hw_list);
5213
5214                 /* Validate the EEPROM and get chipset information */
5215 #if !defined(CONFIG_MVBC_1G)
5216                 if (e1000_init_eeprom_params(hw)) {
5217                         E1000_ERR(nic, "EEPROM is invalid!\n");
5218                         continue;
5219                 }
5220                 if (e1000_validate_eeprom_checksum(hw))
5221                         continue;
5222 #endif
5223                 e1000_read_mac_addr(nic);
5224                 e1000_get_bus_type(hw);
5225
5226                 printf("e1000: %02x:%02x:%02x:%02x:%02x:%02x\n       ",
5227                        nic->enetaddr[0], nic->enetaddr[1], nic->enetaddr[2],
5228                        nic->enetaddr[3], nic->enetaddr[4], nic->enetaddr[5]);
5229
5230                 /* Set up the function pointers and register the device */
5231                 nic->init = e1000_init;
5232                 nic->recv = e1000_poll;
5233                 nic->send = e1000_transmit;
5234                 nic->halt = e1000_disable;
5235                 eth_register(nic);
5236         }
5237
5238         return i;
5239 }
5240
5241 struct e1000_hw *e1000_find_card(unsigned int cardnum)
5242 {
5243         struct e1000_hw *hw;
5244
5245         list_for_each_entry(hw, &e1000_hw_list, list_node)
5246                 if (hw->cardnum == cardnum)
5247                         return hw;
5248
5249         return NULL;
5250 }
5251
5252 #ifdef CONFIG_CMD_E1000
5253 static int do_e1000(cmd_tbl_t *cmdtp, int flag,
5254                 int argc, char * const argv[])
5255 {
5256         struct e1000_hw *hw;
5257
5258         if (argc < 3) {
5259                 cmd_usage(cmdtp);
5260                 return 1;
5261         }
5262
5263         /* Make sure we can find the requested e1000 card */
5264         hw = e1000_find_card(simple_strtoul(argv[1], NULL, 10));
5265         if (!hw) {
5266                 printf("e1000: ERROR: No such device: e1000#%s\n", argv[1]);
5267                 return 1;
5268         }
5269
5270         if (!strcmp(argv[2], "print-mac-address")) {
5271                 unsigned char *mac = hw->nic->enetaddr;
5272                 printf("%02x:%02x:%02x:%02x:%02x:%02x\n",
5273                         mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
5274                 return 0;
5275         }
5276
5277 #ifdef CONFIG_E1000_SPI
5278         /* Handle the "SPI" subcommand */
5279         if (!strcmp(argv[2], "spi"))
5280                 return do_e1000_spi(cmdtp, hw, argc - 3, argv + 3);
5281 #endif
5282
5283         cmd_usage(cmdtp);
5284         return 1;
5285 }
5286
5287 U_BOOT_CMD(
5288         e1000, 7, 0, do_e1000,
5289         "Intel e1000 controller management",
5290         /*  */"<card#> print-mac-address\n"
5291 #ifdef CONFIG_E1000_SPI
5292         "e1000 <card#> spi show [<offset> [<length>]]\n"
5293         "e1000 <card#> spi dump <addr> <offset> <length>\n"
5294         "e1000 <card#> spi program <addr> <offset> <length>\n"
5295         "e1000 <card#> spi checksum [update]\n"
5296 #endif
5297         "       - Manage the Intel E1000 PCI device"
5298 );
5299 #endif /* not CONFIG_CMD_E1000 */