drivers/net/ethernet/intel/igb/e1000_82575.c

   1 /*******************************************************************************
   2
   3   Intel(R) Gigabit Ethernet Linux driver
   4   Copyright(c) 2007-2013 Intel Corporation.
   5
   6   This program is free software; you can redistribute it and/or modify it
   7   under the terms and conditions of the GNU General Public License,
   8   version 2, as published by the Free Software Foundation.
   9
  10   This program is distributed in the hope it will be useful, but WITHOUT
  11   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13   more details.
  14
  15   You should have received a copy of the GNU General Public License along with
  16   this program; if not, write to the Free Software Foundation, Inc.,
  17   51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  18
  19   The full GNU General Public License is included in this distribution in
  20   the file called "COPYING".
  21
  22   Contact Information:
  23   e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  24   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  25
  26 *******************************************************************************/
  27
  28 /* e1000_82575
  29  * e1000_82576
  30  */
  31
  32 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  33
  34 #include <linux/types.h>
  35 #include <linux/if_ether.h>
  36 #include <linux/i2c.h>
  37
  38 #include "e1000_mac.h"
  39 #include "e1000_82575.h"
  40 #include "e1000_i210.h"
  41
  42 static s32  igb_get_invariants_82575(struct e1000_hw *);
  43 static s32  igb_acquire_phy_82575(struct e1000_hw *);
  44 static void igb_release_phy_82575(struct e1000_hw *);
  45 static s32  igb_acquire_nvm_82575(struct e1000_hw *);
  46 static void igb_release_nvm_82575(struct e1000_hw *);
  47 static s32  igb_check_for_link_82575(struct e1000_hw *);
  48 static s32  igb_get_cfg_done_82575(struct e1000_hw *);
  49 static s32  igb_init_hw_82575(struct e1000_hw *);
  50 static s32  igb_phy_hw_reset_sgmii_82575(struct e1000_hw *);
  51 static s32  igb_read_phy_reg_sgmii_82575(struct e1000_hw *, u32, u16 *);
  52 static s32  igb_read_phy_reg_82580(struct e1000_hw *, u32, u16 *);
  53 static s32  igb_write_phy_reg_82580(struct e1000_hw *, u32, u16);
  54 static s32  igb_reset_hw_82575(struct e1000_hw *);
  55 static s32  igb_reset_hw_82580(struct e1000_hw *);
  56 static s32  igb_set_d0_lplu_state_82575(struct e1000_hw *, bool);
  57 static s32  igb_set_d0_lplu_state_82580(struct e1000_hw *, bool);
  58 static s32  igb_set_d3_lplu_state_82580(struct e1000_hw *, bool);
  59 static s32  igb_setup_copper_link_82575(struct e1000_hw *);
  60 static s32  igb_setup_serdes_link_82575(struct e1000_hw *);
  61 static s32  igb_write_phy_reg_sgmii_82575(struct e1000_hw *, u32, u16);
  62 static void igb_clear_hw_cntrs_82575(struct e1000_hw *);
  63 static s32  igb_acquire_swfw_sync_82575(struct e1000_hw *, u16);
  64 static s32  igb_get_pcs_speed_and_duplex_82575(struct e1000_hw *, u16 *,
  65                                                  u16 *);
  66 static s32  igb_get_phy_id_82575(struct e1000_hw *);
  67 static void igb_release_swfw_sync_82575(struct e1000_hw *, u16);
  68 static bool igb_sgmii_active_82575(struct e1000_hw *);
  69 static s32  igb_reset_init_script_82575(struct e1000_hw *);
  70 static s32  igb_read_mac_addr_82575(struct e1000_hw *);
  71 static s32  igb_set_pcie_completion_timeout(struct e1000_hw *hw);
  72 static s32  igb_reset_mdicnfg_82580(struct e1000_hw *hw);
  73 static s32  igb_validate_nvm_checksum_82580(struct e1000_hw *hw);
  74 static s32  igb_update_nvm_checksum_82580(struct e1000_hw *hw);
  75 static s32 igb_validate_nvm_checksum_i350(struct e1000_hw *hw);
  76 static s32 igb_update_nvm_checksum_i350(struct e1000_hw *hw);
  77 static const u16 e1000_82580_rxpbs_table[] =
  78         { 36, 72, 144, 1, 2, 4, 8, 16,
  79           35, 70, 140 };
  80 #define E1000_82580_RXPBS_TABLE_SIZE \
  81         (sizeof(e1000_82580_rxpbs_table)/sizeof(u16))
  82
  83 /**
  84  *  igb_sgmii_uses_mdio_82575 - Determine if I2C pins are for external MDIO
  85  *  @hw: pointer to the HW structure
  86  *
  87  *  Called to determine if the I2C pins are being used for I2C or as an
  88  *  external MDIO interface since the two options are mutually exclusive.
  89  **/
  90 static bool igb_sgmii_uses_mdio_82575(struct e1000_hw *hw)
  91 {
  92         u32 reg = 0;
  93         bool ext_mdio = false;
  94
  95         switch (hw->mac.type) {
  96         case e1000_82575:
  97         case e1000_82576:
  98                 reg = rd32(E1000_MDIC);
  99                 ext_mdio = !!(reg & E1000_MDIC_DEST);
 100                 break;
 101         case e1000_82580:
 102         case e1000_i350:
 103         case e1000_i210:
 104         case e1000_i211:
 105                 reg = rd32(E1000_MDICNFG);
 106                 ext_mdio = !!(reg & E1000_MDICNFG_EXT_MDIO);
 107                 break;
 108         default:
 109                 break;
 110         }
 111         return ext_mdio;
 112 }
 113
 114 /**
 115  *  igb_init_phy_params_82575 - Init PHY func ptrs.
 116  *  @hw: pointer to the HW structure
 117  **/
 118 static s32 igb_init_phy_params_82575(struct e1000_hw *hw)
 119 {
 120         struct e1000_phy_info *phy = &hw->phy;
 121         s32 ret_val = 0;
 122         u32 ctrl_ext;
 123
 124         if (hw->phy.media_type != e1000_media_type_copper) {
 125                 phy->type = e1000_phy_none;
 126                 goto out;
 127         }
 128
 129         phy->autoneg_mask       = AUTONEG_ADVERTISE_SPEED_DEFAULT;
 130         phy->reset_delay_us     = 100;
 131
 132         ctrl_ext = rd32(E1000_CTRL_EXT);
 133
 134         if (igb_sgmii_active_82575(hw)) {
 135                 phy->ops.reset = igb_phy_hw_reset_sgmii_82575;
 136                 ctrl_ext |= E1000_CTRL_I2C_ENA;
 137         } else {
 138                 phy->ops.reset = igb_phy_hw_reset;
 139                 ctrl_ext &= ~E1000_CTRL_I2C_ENA;
 140         }
 141
 142         wr32(E1000_CTRL_EXT, ctrl_ext);
 143         igb_reset_mdicnfg_82580(hw);
 144
 145         if (igb_sgmii_active_82575(hw) && !igb_sgmii_uses_mdio_82575(hw)) {
 146                 phy->ops.read_reg = igb_read_phy_reg_sgmii_82575;
 147                 phy->ops.write_reg = igb_write_phy_reg_sgmii_82575;
 148         } else {
 149                 switch (hw->mac.type) {
 150                 case e1000_82580:
 151                 case e1000_i350:
 152                         phy->ops.read_reg = igb_read_phy_reg_82580;
 153                         phy->ops.write_reg = igb_write_phy_reg_82580;
 154                         break;
 155                 case e1000_i210:
 156                 case e1000_i211:
 157                         phy->ops.read_reg = igb_read_phy_reg_gs40g;
 158                         phy->ops.write_reg = igb_write_phy_reg_gs40g;
 159                         break;
 160                 default:
 161                         phy->ops.read_reg = igb_read_phy_reg_igp;
 162                         phy->ops.write_reg = igb_write_phy_reg_igp;
 163                 }
 164         }
 165
 166         /* set lan id */
 167         hw->bus.func = (rd32(E1000_STATUS) & E1000_STATUS_FUNC_MASK) >>
 168                         E1000_STATUS_FUNC_SHIFT;
 169
 170         /* Set phy->phy_addr and phy->id. */
 171         ret_val = igb_get_phy_id_82575(hw);
 172         if (ret_val)
 173                 return ret_val;
 174
 175         /* Verify phy id and set remaining function pointers */
 176         switch (phy->id) {
 177         case I347AT4_E_PHY_ID:
 178         case M88E1112_E_PHY_ID:
 179         case M88E1111_I_PHY_ID:
 180                 phy->type               = e1000_phy_m88;
 181                 phy->ops.get_phy_info   = igb_get_phy_info_m88;
 182                 if (phy->id == I347AT4_E_PHY_ID ||
 183                     phy->id == M88E1112_E_PHY_ID)
 184                         phy->ops.get_cable_length =
 185                                          igb_get_cable_length_m88_gen2;
 186                 else
 187                         phy->ops.get_cable_length = igb_get_cable_length_m88;
 188                 phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_m88;
 189                 break;
 190         case IGP03E1000_E_PHY_ID:
 191                 phy->type = e1000_phy_igp_3;
 192                 phy->ops.get_phy_info = igb_get_phy_info_igp;
 193                 phy->ops.get_cable_length = igb_get_cable_length_igp_2;
 194                 phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_igp;
 195                 phy->ops.set_d0_lplu_state = igb_set_d0_lplu_state_82575;
 196                 phy->ops.set_d3_lplu_state = igb_set_d3_lplu_state;
 197                 break;
 198         case I82580_I_PHY_ID:
 199         case I350_I_PHY_ID:
 200                 phy->type = e1000_phy_82580;
 201                 phy->ops.force_speed_duplex =
 202                                          igb_phy_force_speed_duplex_82580;
 203                 phy->ops.get_cable_length = igb_get_cable_length_82580;
 204                 phy->ops.get_phy_info = igb_get_phy_info_82580;
 205                 phy->ops.set_d0_lplu_state = igb_set_d0_lplu_state_82580;
 206                 phy->ops.set_d3_lplu_state = igb_set_d3_lplu_state_82580;
 207                 break;
 208         case I210_I_PHY_ID:
 209                 phy->type               = e1000_phy_i210;
 210                 phy->ops.check_polarity = igb_check_polarity_m88;
 211                 phy->ops.get_phy_info   = igb_get_phy_info_m88;
 212                 phy->ops.get_cable_length = igb_get_cable_length_m88_gen2;
 213                 phy->ops.set_d0_lplu_state = igb_set_d0_lplu_state_82580;
 214                 phy->ops.set_d3_lplu_state = igb_set_d3_lplu_state_82580;
 215                 phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_m88;
 216                 break;
 217         default:
 218                 ret_val = -E1000_ERR_PHY;
 219                 goto out;
 220         }
 221
 222 out:
 223         return ret_val;
 224 }
 225
 226 /**
 227  *  igb_init_nvm_params_82575 - Init NVM func ptrs.
 228  *  @hw: pointer to the HW structure
 229  **/
 230 s32 igb_init_nvm_params_82575(struct e1000_hw *hw)
 231 {
 232         struct e1000_nvm_info *nvm = &hw->nvm;
 233         u32 eecd = rd32(E1000_EECD);
 234         u16 size;
 235
 236         size = (u16)((eecd & E1000_EECD_SIZE_EX_MASK) >>
 237                      E1000_EECD_SIZE_EX_SHIFT);
 238         /* Added to a constant, "size" becomes the left-shift value
 239          * for setting word_size.
 240          */
 241         size += NVM_WORD_SIZE_BASE_SHIFT;
 242
 243         /* Just in case size is out of range, cap it to the largest
 244          * EEPROM size supported
 245          */
 246         if (size > 15)
 247                 size = 15;
 248
 249         nvm->word_size = 1 << size;
 250         if (hw->mac.type < e1000_i210) {
 251                 nvm->opcode_bits = 8;
 252                 nvm->delay_usec = 1;
 253
 254                 switch (nvm->override) {
 255                 case e1000_nvm_override_spi_large:
 256                         nvm->page_size = 32;
 257                         nvm->address_bits = 16;
 258                         break;
 259                 case e1000_nvm_override_spi_small:
 260                         nvm->page_size = 8;
 261                         nvm->address_bits = 8;
 262                         break;
 263                 default:
 264                         nvm->page_size = eecd & E1000_EECD_ADDR_BITS ? 32 : 8;
 265                         nvm->address_bits = eecd & E1000_EECD_ADDR_BITS ?
 266                                             16 : 8;
 267                         break;
 268                 }
 269                 if (nvm->word_size == (1 << 15))
 270                         nvm->page_size = 128;
 271
 272                 nvm->type = e1000_nvm_eeprom_spi;
 273         } else {
 274                 nvm->type = e1000_nvm_flash_hw;
 275         }
 276
 277         /* NVM Function Pointers */
 278         switch (hw->mac.type) {
 279         case e1000_82580:
 280                 nvm->ops.validate = igb_validate_nvm_checksum_82580;
 281                 nvm->ops.update = igb_update_nvm_checksum_82580;
 282                 nvm->ops.acquire = igb_acquire_nvm_82575;
 283                 nvm->ops.release = igb_release_nvm_82575;
 284                 if (nvm->word_size < (1 << 15))
 285                         nvm->ops.read = igb_read_nvm_eerd;
 286                 else
 287                         nvm->ops.read = igb_read_nvm_spi;
 288                 nvm->ops.write = igb_write_nvm_spi;
 289                 break;
 290         case e1000_i350:
 291                 nvm->ops.validate = igb_validate_nvm_checksum_i350;
 292                 nvm->ops.update = igb_update_nvm_checksum_i350;
 293                 nvm->ops.acquire = igb_acquire_nvm_82575;
 294                 nvm->ops.release = igb_release_nvm_82575;
 295                 if (nvm->word_size < (1 << 15))
 296                         nvm->ops.read = igb_read_nvm_eerd;
 297                 else
 298                         nvm->ops.read = igb_read_nvm_spi;
 299                 nvm->ops.write = igb_write_nvm_spi;
 300                 break;
 301         case e1000_i210:
 302                 nvm->ops.validate = igb_validate_nvm_checksum_i210;
 303                 nvm->ops.update   = igb_update_nvm_checksum_i210;
 304                 nvm->ops.acquire = igb_acquire_nvm_i210;
 305                 nvm->ops.release = igb_release_nvm_i210;
 306                 nvm->ops.read    = igb_read_nvm_srrd_i210;
 307                 nvm->ops.write   = igb_write_nvm_srwr_i210;
 308                 nvm->ops.valid_led_default = igb_valid_led_default_i210;
 309                 break;
 310         case e1000_i211:
 311                 nvm->ops.acquire  = igb_acquire_nvm_i210;
 312                 nvm->ops.release  = igb_release_nvm_i210;
 313                 nvm->ops.read     = igb_read_nvm_i211;
 314                 nvm->ops.valid_led_default = igb_valid_led_default_i210;
 315                 nvm->ops.validate = NULL;
 316                 nvm->ops.update   = NULL;
 317                 nvm->ops.write    = NULL;
 318                 break;
 319         default:
 320                 nvm->ops.validate = igb_validate_nvm_checksum;
 321                 nvm->ops.update = igb_update_nvm_checksum;
 322                 nvm->ops.acquire = igb_acquire_nvm_82575;
 323                 nvm->ops.release = igb_release_nvm_82575;
 324                 if (nvm->word_size < (1 << 15))
 325                         nvm->ops.read = igb_read_nvm_eerd;
 326                 else
 327                         nvm->ops.read = igb_read_nvm_spi;
 328                 nvm->ops.write = igb_write_nvm_spi;
 329                 break;
 330         }
 331
 332         return 0;
 333 }
 334
 335 /**
 336  *  igb_init_mac_params_82575 - Init MAC func ptrs.
 337  *  @hw: pointer to the HW structure
 338  **/
 339 static s32 igb_init_mac_params_82575(struct e1000_hw *hw)
 340 {
 341         struct e1000_mac_info *mac = &hw->mac;
 342         struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575;
 343
 344         /* Set mta register count */
 345         mac->mta_reg_count = 128;
 346         /* Set rar entry count */
 347         switch (mac->type) {
 348         case e1000_82576:
 349                 mac->rar_entry_count = E1000_RAR_ENTRIES_82576;
 350                 break;
 351         case e1000_82580:
 352                 mac->rar_entry_count = E1000_RAR_ENTRIES_82580;
 353                 break;
 354         case e1000_i350:
 355                 mac->rar_entry_count = E1000_RAR_ENTRIES_I350;
 356                 break;
 357         default:
 358                 mac->rar_entry_count = E1000_RAR_ENTRIES_82575;
 359                 break;
 360         }
 361         /* reset */
 362         if (mac->type >= e1000_82580)
 363                 mac->ops.reset_hw = igb_reset_hw_82580;
 364         else
 365                 mac->ops.reset_hw = igb_reset_hw_82575;
 366
 367         if (mac->type >= e1000_i210) {
 368                 mac->ops.acquire_swfw_sync = igb_acquire_swfw_sync_i210;
 369                 mac->ops.release_swfw_sync = igb_release_swfw_sync_i210;
 370
 371         } else {
 372                 mac->ops.acquire_swfw_sync = igb_acquire_swfw_sync_82575;
 373                 mac->ops.release_swfw_sync = igb_release_swfw_sync_82575;
 374         }
 375
 376         /* Set if part includes ASF firmware */
 377         mac->asf_firmware_present = true;
 378         /* Set if manageability features are enabled. */
 379         mac->arc_subsystem_valid =
 380                 (rd32(E1000_FWSM) & E1000_FWSM_MODE_MASK)
 381                         ? true : false;
 382         /* enable EEE on i350 parts and later parts */
 383         if (mac->type >= e1000_i350)
 384                 dev_spec->eee_disable = false;
 385         else
 386                 dev_spec->eee_disable = true;
 387         /* physical interface link setup */
 388         mac->ops.setup_physical_interface =
 389                 (hw->phy.media_type == e1000_media_type_copper)
 390                         ? igb_setup_copper_link_82575
 391                         : igb_setup_serdes_link_82575;
 392
 393         return 0;
 394 }
 395
 396 static s32 igb_get_invariants_82575(struct e1000_hw *hw)
 397 {
 398         struct e1000_mac_info *mac = &hw->mac;
 399         struct e1000_dev_spec_82575 * dev_spec = &hw->dev_spec._82575;
 400         s32 ret_val;
 401         u32 ctrl_ext = 0;
 402
 403         switch (hw->device_id) {
 404         case E1000_DEV_ID_82575EB_COPPER:
 405         case E1000_DEV_ID_82575EB_FIBER_SERDES:
 406         case E1000_DEV_ID_82575GB_QUAD_COPPER:
 407                 mac->type = e1000_82575;
 408                 break;
 409         case E1000_DEV_ID_82576:
 410         case E1000_DEV_ID_82576_NS:
 411         case E1000_DEV_ID_82576_NS_SERDES:
 412         case E1000_DEV_ID_82576_FIBER:
 413         case E1000_DEV_ID_82576_SERDES:
 414         case E1000_DEV_ID_82576_QUAD_COPPER:
 415         case E1000_DEV_ID_82576_QUAD_COPPER_ET2:
 416         case E1000_DEV_ID_82576_SERDES_QUAD:
 417                 mac->type = e1000_82576;
 418                 break;
 419         case E1000_DEV_ID_82580_COPPER:
 420         case E1000_DEV_ID_82580_FIBER:
 421         case E1000_DEV_ID_82580_QUAD_FIBER:
 422         case E1000_DEV_ID_82580_SERDES:
 423         case E1000_DEV_ID_82580_SGMII:
 424         case E1000_DEV_ID_82580_COPPER_DUAL:
 425         case E1000_DEV_ID_DH89XXCC_SGMII:
 426         case E1000_DEV_ID_DH89XXCC_SERDES:
 427         case E1000_DEV_ID_DH89XXCC_BACKPLANE:
 428         case E1000_DEV_ID_DH89XXCC_SFP:
 429                 mac->type = e1000_82580;
 430                 break;
 431         case E1000_DEV_ID_I350_COPPER:
 432         case E1000_DEV_ID_I350_FIBER:
 433         case E1000_DEV_ID_I350_SERDES:
 434         case E1000_DEV_ID_I350_SGMII:
 435                 mac->type = e1000_i350;
 436                 break;
 437         case E1000_DEV_ID_I210_COPPER:
 438         case E1000_DEV_ID_I210_COPPER_OEM1:
 439         case E1000_DEV_ID_I210_COPPER_IT:
 440         case E1000_DEV_ID_I210_FIBER:
 441         case E1000_DEV_ID_I210_SERDES:
 442         case E1000_DEV_ID_I210_SGMII:
 443                 mac->type = e1000_i210;
 444                 break;
 445         case E1000_DEV_ID_I211_COPPER:
 446                 mac->type = e1000_i211;
 447                 break;
 448         default:
 449                 return -E1000_ERR_MAC_INIT;
 450                 break;
 451         }
 452
 453         /* Set media type */
 454         /*
 455          * The 82575 uses bits 22:23 for link mode. The mode can be changed
 456          * based on the EEPROM. We cannot rely upon device ID. There
 457          * is no distinguishable difference between fiber and internal
 458          * SerDes mode on the 82575. There can be an external PHY attached
 459          * on the SGMII interface. For this, we'll set sgmii_active to true.
 460          */
 461         hw->phy.media_type = e1000_media_type_copper;
 462         dev_spec->sgmii_active = false;
 463
 464         ctrl_ext = rd32(E1000_CTRL_EXT);
 465         switch (ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK) {
 466         case E1000_CTRL_EXT_LINK_MODE_SGMII:
 467                 dev_spec->sgmii_active = true;
 468                 break;
 469         case E1000_CTRL_EXT_LINK_MODE_1000BASE_KX:
 470         case E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES:
 471                 hw->phy.media_type = e1000_media_type_internal_serdes;
 472                 break;
 473         default:
 474                 break;
 475         }
 476
 477         /* mac initialization and operations */
 478         ret_val = igb_init_mac_params_82575(hw);
 479         if (ret_val)
 480                 goto out;
 481
 482         /* NVM initialization */
 483         ret_val = igb_init_nvm_params_82575(hw);
 484         if (ret_val)
 485                 goto out;
 486
 487         /* if part supports SR-IOV then initialize mailbox parameters */
 488         switch (mac->type) {
 489         case e1000_82576:
 490         case e1000_i350:
 491                 igb_init_mbx_params_pf(hw);
 492                 break;
 493         default:
 494                 break;
 495         }
 496
 497         /* setup PHY parameters */
 498         ret_val = igb_init_phy_params_82575(hw);
 499
 500 out:
 501         return ret_val;
 502 }
 503
 504 /**
 505  *  igb_acquire_phy_82575 - Acquire rights to access PHY
 506  *  @hw: pointer to the HW structure
 507  *
 508  *  Acquire access rights to the correct PHY.  This is a
 509  *  function pointer entry point called by the api module.
 510  **/
 511 static s32 igb_acquire_phy_82575(struct e1000_hw *hw)
 512 {
 513         u16 mask = E1000_SWFW_PHY0_SM;
 514
 515         if (hw->bus.func == E1000_FUNC_1)
 516                 mask = E1000_SWFW_PHY1_SM;
 517         else if (hw->bus.func == E1000_FUNC_2)
 518                 mask = E1000_SWFW_PHY2_SM;
 519         else if (hw->bus.func == E1000_FUNC_3)
 520                 mask = E1000_SWFW_PHY3_SM;
 521
 522         return hw->mac.ops.acquire_swfw_sync(hw, mask);
 523 }
 524
 525 /**
 526  *  igb_release_phy_82575 - Release rights to access PHY
 527  *  @hw: pointer to the HW structure
 528  *
 529  *  A wrapper to release access rights to the correct PHY.  This is a
 530  *  function pointer entry point called by the api module.
 531  **/
 532 static void igb_release_phy_82575(struct e1000_hw *hw)
 533 {
 534         u16 mask = E1000_SWFW_PHY0_SM;
 535
 536         if (hw->bus.func == E1000_FUNC_1)
 537                 mask = E1000_SWFW_PHY1_SM;
 538         else if (hw->bus.func == E1000_FUNC_2)
 539                 mask = E1000_SWFW_PHY2_SM;
 540         else if (hw->bus.func == E1000_FUNC_3)
 541                 mask = E1000_SWFW_PHY3_SM;
 542
 543         hw->mac.ops.release_swfw_sync(hw, mask);
 544 }
 545
 546 /**
 547  *  igb_read_phy_reg_sgmii_82575 - Read PHY register using sgmii
 548  *  @hw: pointer to the HW structure
 549  *  @offset: register offset to be read
 550  *  @data: pointer to the read data
 551  *
 552  *  Reads the PHY register at offset using the serial gigabit media independent
 553  *  interface and stores the retrieved information in data.
 554  **/
 555 static s32 igb_read_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset,
 556                                           u16 *data)
 557 {
 558         s32 ret_val = -E1000_ERR_PARAM;
 559
 560         if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) {
 561                 hw_dbg("PHY Address %u is out of range\n", offset);
 562                 goto out;
 563         }
 564
 565         ret_val = hw->phy.ops.acquire(hw);
 566         if (ret_val)
 567                 goto out;
 568
 569         ret_val = igb_read_phy_reg_i2c(hw, offset, data);
 570
 571         hw->phy.ops.release(hw);
 572
 573 out:
 574         return ret_val;
 575 }
 576
 577 /**
 578  *  igb_write_phy_reg_sgmii_82575 - Write PHY register using sgmii
 579  *  @hw: pointer to the HW structure
 580  *  @offset: register offset to write to
 581  *  @data: data to write at register offset
 582  *
 583  *  Writes the data to PHY register at the offset using the serial gigabit
 584  *  media independent interface.
 585  **/
 586 static s32 igb_write_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset,
 587                                            u16 data)
 588 {
 589         s32 ret_val = -E1000_ERR_PARAM;
 590
 591
 592         if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) {
 593                 hw_dbg("PHY Address %d is out of range\n", offset);
 594                 goto out;
 595         }
 596
 597         ret_val = hw->phy.ops.acquire(hw);
 598         if (ret_val)
 599                 goto out;
 600
 601         ret_val = igb_write_phy_reg_i2c(hw, offset, data);
 602
 603         hw->phy.ops.release(hw);
 604
 605 out:
 606         return ret_val;
 607 }
 608
 609 /**
 610  *  igb_get_phy_id_82575 - Retrieve PHY addr and id
 611  *  @hw: pointer to the HW structure
 612  *
 613  *  Retrieves the PHY address and ID for both PHY's which do and do not use
 614  *  sgmi interface.
 615  **/
 616 static s32 igb_get_phy_id_82575(struct e1000_hw *hw)
 617 {
 618         struct e1000_phy_info *phy = &hw->phy;
 619         s32  ret_val = 0;
 620         u16 phy_id;
 621         u32 ctrl_ext;
 622         u32 mdic;
 623
 624         /*
 625          * For SGMII PHYs, we try the list of possible addresses until
 626          * we find one that works.  For non-SGMII PHYs
 627          * (e.g. integrated copper PHYs), an address of 1 should
 628          * work.  The result of this function should mean phy->phy_addr
 629          * and phy->id are set correctly.
 630          */
 631         if (!(igb_sgmii_active_82575(hw))) {
 632                 phy->addr = 1;
 633                 ret_val = igb_get_phy_id(hw);
 634                 goto out;
 635         }
 636
 637         if (igb_sgmii_uses_mdio_82575(hw)) {
 638                 switch (hw->mac.type) {
 639                 case e1000_82575:
 640                 case e1000_82576:
 641                         mdic = rd32(E1000_MDIC);
 642                         mdic &= E1000_MDIC_PHY_MASK;
 643                         phy->addr = mdic >> E1000_MDIC_PHY_SHIFT;
 644                         break;
 645                 case e1000_82580:
 646                 case e1000_i350:
 647                 case e1000_i210:
 648                 case e1000_i211:
 649                         mdic = rd32(E1000_MDICNFG);
 650                         mdic &= E1000_MDICNFG_PHY_MASK;
 651                         phy->addr = mdic >> E1000_MDICNFG_PHY_SHIFT;
 652                         break;
 653                 default:
 654                         ret_val = -E1000_ERR_PHY;
 655                         goto out;
 656                         break;
 657                 }
 658                 ret_val = igb_get_phy_id(hw);
 659                 goto out;
 660         }
 661
 662         /* Power on sgmii phy if it is disabled */
 663         ctrl_ext = rd32(E1000_CTRL_EXT);
 664         wr32(E1000_CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_SDP3_DATA);
 665         wrfl();
 666         msleep(300);
 667
 668         /*
 669          * The address field in the I2CCMD register is 3 bits and 0 is invalid.
 670          * Therefore, we need to test 1-7
 671          */
 672         for (phy->addr = 1; phy->addr < 8; phy->addr++) {
 673                 ret_val = igb_read_phy_reg_sgmii_82575(hw, PHY_ID1, &phy_id);
 674                 if (ret_val == 0) {
 675                         hw_dbg("Vendor ID 0x%08X read at address %u\n",
 676                                phy_id, phy->addr);
 677                         /*
 678                          * At the time of this writing, The M88 part is
 679                          * the only supported SGMII PHY product.
 680                          */
 681                         if (phy_id == M88_VENDOR)
 682                                 break;
 683                 } else {
 684                         hw_dbg("PHY address %u was unreadable\n", phy->addr);
 685                 }
 686         }
 687
 688         /* A valid PHY type couldn't be found. */
 689         if (phy->addr == 8) {
 690                 phy->addr = 0;
 691                 ret_val = -E1000_ERR_PHY;
 692                 goto out;
 693         } else {
 694                 ret_val = igb_get_phy_id(hw);
 695         }
 696
 697         /* restore previous sfp cage power state */
 698         wr32(E1000_CTRL_EXT, ctrl_ext);
 699
 700 out:
 701         return ret_val;
 702 }
 703
 704 /**
 705  *  igb_phy_hw_reset_sgmii_82575 - Performs a PHY reset
 706  *  @hw: pointer to the HW structure
 707  *
 708  *  Resets the PHY using the serial gigabit media independent interface.
 709  **/
 710 static s32 igb_phy_hw_reset_sgmii_82575(struct e1000_hw *hw)
 711 {
 712         s32 ret_val;
 713
 714         /*
 715          * This isn't a true "hard" reset, but is the only reset
 716          * available to us at this time.
 717          */
 718
 719         hw_dbg("Soft resetting SGMII attached PHY...\n");
 720
 721         /*
 722          * SFP documentation requires the following to configure the SPF module
 723          * to work on SGMII.  No further documentation is given.
 724          */
 725         ret_val = hw->phy.ops.write_reg(hw, 0x1B, 0x8084);
 726         if (ret_val)
 727                 goto out;
 728
 729         ret_val = igb_phy_sw_reset(hw);
 730
 731 out:
 732         return ret_val;
 733 }
 734
 735 /**
 736  *  igb_set_d0_lplu_state_82575 - Set Low Power Linkup D0 state
 737  *  @hw: pointer to the HW structure
 738  *  @active: true to enable LPLU, false to disable
 739  *
 740  *  Sets the LPLU D0 state according to the active flag.  When
 741  *  activating LPLU this function also disables smart speed
 742  *  and vice versa.  LPLU will not be activated unless the
 743  *  device autonegotiation advertisement meets standards of
 744  *  either 10 or 10/100 or 10/100/1000 at all duplexes.
 745  *  This is a function pointer entry point only called by
 746  *  PHY setup routines.
 747  **/
 748 static s32 igb_set_d0_lplu_state_82575(struct e1000_hw *hw, bool active)
 749 {
 750         struct e1000_phy_info *phy = &hw->phy;
 751         s32 ret_val;
 752         u16 data;
 753
 754         ret_val = phy->ops.read_reg(hw, IGP02E1000_PHY_POWER_MGMT, &data);
 755         if (ret_val)
 756                 goto out;
 757
 758         if (active) {
 759                 data |= IGP02E1000_PM_D0_LPLU;
 760                 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT,
 761                                                  data);
 762                 if (ret_val)
 763                         goto out;
 764
 765                 /* When LPLU is enabled, we should disable SmartSpeed */
 766                 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
 767                                                 &data);
 768                 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
 769                 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
 770                                                  data);
 771                 if (ret_val)
 772                         goto out;
 773         } else {
 774                 data &= ~IGP02E1000_PM_D0_LPLU;
 775                 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT,
 776                                                  data);
 777                 /*
 778                  * LPLU and SmartSpeed are mutually exclusive.  LPLU is used
 779                  * during Dx states where the power conservation is most
 780                  * important.  During driver activity we should enable
 781                  * SmartSpeed, so performance is maintained.
 782                  */
 783                 if (phy->smart_speed == e1000_smart_speed_on) {
 784                         ret_val = phy->ops.read_reg(hw,
 785                                         IGP01E1000_PHY_PORT_CONFIG, &data);
 786                         if (ret_val)
 787                                 goto out;
 788
 789                         data |= IGP01E1000_PSCFR_SMART_SPEED;
 790                         ret_val = phy->ops.write_reg(hw,
 791                                         IGP01E1000_PHY_PORT_CONFIG, data);
 792                         if (ret_val)
 793                                 goto out;
 794                 } else if (phy->smart_speed == e1000_smart_speed_off) {
 795                         ret_val = phy->ops.read_reg(hw,
 796                                         IGP01E1000_PHY_PORT_CONFIG, &data);
 797                         if (ret_val)
 798                                 goto out;
 799
 800                         data &= ~IGP01E1000_PSCFR_SMART_SPEED;
 801                         ret_val = phy->ops.write_reg(hw,
 802                                         IGP01E1000_PHY_PORT_CONFIG, data);
 803                         if (ret_val)
 804                                 goto out;
 805                 }
 806         }
 807
 808 out:
 809         return ret_val;
 810 }
 811
 812 /**
 813  *  igb_set_d0_lplu_state_82580 - Set Low Power Linkup D0 state
 814  *  @hw: pointer to the HW structure
 815  *  @active: true to enable LPLU, false to disable
 816  *
 817  *  Sets the LPLU D0 state according to the active flag.  When
 818  *  activating LPLU this function also disables smart speed
 819  *  and vice versa.  LPLU will not be activated unless the
 820  *  device autonegotiation advertisement meets standards of
 821  *  either 10 or 10/100 or 10/100/1000 at all duplexes.
 822  *  This is a function pointer entry point only called by
 823  *  PHY setup routines.
 824  **/
 825 static s32 igb_set_d0_lplu_state_82580(struct e1000_hw *hw, bool active)
 826 {
 827         struct e1000_phy_info *phy = &hw->phy;
 828         s32 ret_val = 0;
 829         u16 data;
 830
 831         data = rd32(E1000_82580_PHY_POWER_MGMT);
 832
 833         if (active) {
 834                 data |= E1000_82580_PM_D0_LPLU;
 835
 836                 /* When LPLU is enabled, we should disable SmartSpeed */
 837                 data &= ~E1000_82580_PM_SPD;
 838         } else {
 839                 data &= ~E1000_82580_PM_D0_LPLU;
 840
 841                 /*
 842                  * LPLU and SmartSpeed are mutually exclusive.  LPLU is used
 843                  * during Dx states where the power conservation is most
 844                  * important.  During driver activity we should enable
 845                  * SmartSpeed, so performance is maintained.
 846                  */
 847                 if (phy->smart_speed == e1000_smart_speed_on)
 848                         data |= E1000_82580_PM_SPD;
 849                 else if (phy->smart_speed == e1000_smart_speed_off)
 850                         data &= ~E1000_82580_PM_SPD; }
 851
 852         wr32(E1000_82580_PHY_POWER_MGMT, data);
 853         return ret_val;
 854 }
 855
 856 /**
 857  *  igb_set_d3_lplu_state_82580 - Sets low power link up state for D3
 858  *  @hw: pointer to the HW structure
 859  *  @active: boolean used to enable/disable lplu
 860  *
 861  *  Success returns 0, Failure returns 1
 862  *
 863  *  The low power link up (lplu) state is set to the power management level D3
 864  *  and SmartSpeed is disabled when active is true, else clear lplu for D3
 865  *  and enable Smartspeed.  LPLU and Smartspeed are mutually exclusive.  LPLU
 866  *  is used during Dx states where the power conservation is most important.
 867  *  During driver activity, SmartSpeed should be enabled so performance is
 868  *  maintained.
 869  **/
 870 s32 igb_set_d3_lplu_state_82580(struct e1000_hw *hw, bool active)
 871 {
 872         struct e1000_phy_info *phy = &hw->phy;
 873         s32 ret_val = 0;
 874         u16 data;
 875
 876         data = rd32(E1000_82580_PHY_POWER_MGMT);
 877
 878         if (!active) {
 879                 data &= ~E1000_82580_PM_D3_LPLU;
 880                 /*
 881                  * LPLU and SmartSpeed are mutually exclusive.  LPLU is used
 882                  * during Dx states where the power conservation is most
 883                  * important.  During driver activity we should enable
 884                  * SmartSpeed, so performance is maintained.
 885                  */
 886                 if (phy->smart_speed == e1000_smart_speed_on)
 887                         data |= E1000_82580_PM_SPD;
 888                 else if (phy->smart_speed == e1000_smart_speed_off)
 889                         data &= ~E1000_82580_PM_SPD;
 890         } else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) ||
 891                    (phy->autoneg_advertised == E1000_ALL_NOT_GIG) ||
 892                    (phy->autoneg_advertised == E1000_ALL_10_SPEED)) {
 893                 data |= E1000_82580_PM_D3_LPLU;
 894                 /* When LPLU is enabled, we should disable SmartSpeed */
 895                 data &= ~E1000_82580_PM_SPD;
 896         }
 897
 898         wr32(E1000_82580_PHY_POWER_MGMT, data);
 899         return ret_val;
 900 }
 901
 902 /**
 903  *  igb_acquire_nvm_82575 - Request for access to EEPROM
 904  *  @hw: pointer to the HW structure
 905  *
 906  *  Acquire the necessary semaphores for exclusive access to the EEPROM.
 907  *  Set the EEPROM access request bit and wait for EEPROM access grant bit.
 908  *  Return successful if access grant bit set, else clear the request for
 909  *  EEPROM access and return -E1000_ERR_NVM (-1).
 910  **/
 911 static s32 igb_acquire_nvm_82575(struct e1000_hw *hw)
 912 {
 913         s32 ret_val;
 914
 915         ret_val = hw->mac.ops.acquire_swfw_sync(hw, E1000_SWFW_EEP_SM);
 916         if (ret_val)
 917                 goto out;
 918
 919         ret_val = igb_acquire_nvm(hw);
 920
 921         if (ret_val)
 922                 hw->mac.ops.release_swfw_sync(hw, E1000_SWFW_EEP_SM);
 923
 924 out:
 925         return ret_val;
 926 }
 927
 928 /**
 929  *  igb_release_nvm_82575 - Release exclusive access to EEPROM
 930  *  @hw: pointer to the HW structure
 931  *
 932  *  Stop any current commands to the EEPROM and clear the EEPROM request bit,
 933  *  then release the semaphores acquired.
 934  **/
 935 static void igb_release_nvm_82575(struct e1000_hw *hw)
 936 {
 937         igb_release_nvm(hw);
 938         hw->mac.ops.release_swfw_sync(hw, E1000_SWFW_EEP_SM);
 939 }
 940
 941 /**
 942  *  igb_acquire_swfw_sync_82575 - Acquire SW/FW semaphore
 943  *  @hw: pointer to the HW structure
 944  *  @mask: specifies which semaphore to acquire
 945  *
 946  *  Acquire the SW/FW semaphore to access the PHY or NVM.  The mask
 947  *  will also specify which port we're acquiring the lock for.
 948  **/
 949 static s32 igb_acquire_swfw_sync_82575(struct e1000_hw *hw, u16 mask)
 950 {
 951         u32 swfw_sync;
 952         u32 swmask = mask;
 953         u32 fwmask = mask << 16;
 954         s32 ret_val = 0;
 955         s32 i = 0, timeout = 200; /* FIXME: find real value to use here */
 956
 957         while (i < timeout) {
 958                 if (igb_get_hw_semaphore(hw)) {
 959                         ret_val = -E1000_ERR_SWFW_SYNC;
 960                         goto out;
 961                 }
 962
 963                 swfw_sync = rd32(E1000_SW_FW_SYNC);
 964                 if (!(swfw_sync & (fwmask | swmask)))
 965                         break;
 966
 967                 /*
 968                  * Firmware currently using resource (fwmask)
 969                  * or other software thread using resource (swmask)
 970                  */
 971                 igb_put_hw_semaphore(hw);
 972                 mdelay(5);
 973                 i++;
 974         }
 975
 976         if (i == timeout) {
 977                 hw_dbg("Driver can't access resource, SW_FW_SYNC timeout.\n");
 978                 ret_val = -E1000_ERR_SWFW_SYNC;
 979                 goto out;
 980         }
 981
 982         swfw_sync |= swmask;
 983         wr32(E1000_SW_FW_SYNC, swfw_sync);
 984
 985         igb_put_hw_semaphore(hw);
 986
 987 out:
 988         return ret_val;
 989 }
 990
 991 /**
 992  *  igb_release_swfw_sync_82575 - Release SW/FW semaphore
 993  *  @hw: pointer to the HW structure
 994  *  @mask: specifies which semaphore to acquire
 995  *
 996  *  Release the SW/FW semaphore used to access the PHY or NVM.  The mask
 997  *  will also specify which port we're releasing the lock for.
 998  **/
 999 static void igb_release_swfw_sync_82575(struct e1000_hw *hw, u16 mask)
1000 {
1001         u32 swfw_sync;
1002
1003         while (igb_get_hw_semaphore(hw) != 0);
1004         /* Empty */
1005
1006         swfw_sync = rd32(E1000_SW_FW_SYNC);
1007         swfw_sync &= ~mask;
1008         wr32(E1000_SW_FW_SYNC, swfw_sync);
1009
1010         igb_put_hw_semaphore(hw);
1011 }
1012
1013 /**
1014  *  igb_get_cfg_done_82575 - Read config done bit
1015  *  @hw: pointer to the HW structure
1016  *
1017  *  Read the management control register for the config done bit for
1018  *  completion status.  NOTE: silicon which is EEPROM-less will fail trying
1019  *  to read the config done bit, so an error is *ONLY* logged and returns
1020  *  0.  If we were to return with error, EEPROM-less silicon
1021  *  would not be able to be reset or change link.
1022  **/
1023 static s32 igb_get_cfg_done_82575(struct e1000_hw *hw)
1024 {
1025         s32 timeout = PHY_CFG_TIMEOUT;
1026         s32 ret_val = 0;
1027         u32 mask = E1000_NVM_CFG_DONE_PORT_0;
1028
1029         if (hw->bus.func == 1)
1030                 mask = E1000_NVM_CFG_DONE_PORT_1;
1031         else if (hw->bus.func == E1000_FUNC_2)
1032                 mask = E1000_NVM_CFG_DONE_PORT_2;
1033         else if (hw->bus.func == E1000_FUNC_3)
1034                 mask = E1000_NVM_CFG_DONE_PORT_3;
1035
1036         while (timeout) {
1037                 if (rd32(E1000_EEMNGCTL) & mask)
1038                         break;
1039                 msleep(1);
1040                 timeout--;
1041         }
1042         if (!timeout)
1043                 hw_dbg("MNG configuration cycle has not completed.\n");
1044
1045         /* If EEPROM is not marked present, init the PHY manually */
1046         if (((rd32(E1000_EECD) & E1000_EECD_PRES) == 0) &&
1047             (hw->phy.type == e1000_phy_igp_3))
1048                 igb_phy_init_script_igp3(hw);
1049
1050         return ret_val;
1051 }
1052
1053 /**
1054  *  igb_check_for_link_82575 - Check for link
1055  *  @hw: pointer to the HW structure
1056  *
1057  *  If sgmii is enabled, then use the pcs register to determine link, otherwise
1058  *  use the generic interface for determining link.
1059  **/
1060 static s32 igb_check_for_link_82575(struct e1000_hw *hw)
1061 {
1062         s32 ret_val;
1063         u16 speed, duplex;
1064
1065         if (hw->phy.media_type != e1000_media_type_copper) {
1066                 ret_val = igb_get_pcs_speed_and_duplex_82575(hw, &speed,
1067                                                              &duplex);
1068                 /*
1069                  * Use this flag to determine if link needs to be checked or
1070                  * not.  If  we have link clear the flag so that we do not
1071                  * continue to check for link.
1072                  */
1073                 hw->mac.get_link_status = !hw->mac.serdes_has_link;
1074
1075                 /* Configure Flow Control now that Auto-Neg has completed.
1076                  * First, we need to restore the desired flow control
1077                  * settings because we may have had to re-autoneg with a
1078                  * different link partner.
1079                  */
1080                 ret_val = igb_config_fc_after_link_up(hw);
1081                 if (ret_val)
1082                         hw_dbg("Error configuring flow control\n");
1083         } else {
1084                 ret_val = igb_check_for_copper_link(hw);
1085         }
1086
1087         return ret_val;
1088 }
1089
1090 /**
1091  *  igb_power_up_serdes_link_82575 - Power up the serdes link after shutdown
1092  *  @hw: pointer to the HW structure
1093  **/
1094 void igb_power_up_serdes_link_82575(struct e1000_hw *hw)
1095 {
1096         u32 reg;
1097
1098
1099         if ((hw->phy.media_type != e1000_media_type_internal_serdes) &&
1100             !igb_sgmii_active_82575(hw))
1101                 return;
1102
1103         /* Enable PCS to turn on link */
1104         reg = rd32(E1000_PCS_CFG0);
1105         reg |= E1000_PCS_CFG_PCS_EN;
1106         wr32(E1000_PCS_CFG0, reg);
1107
1108         /* Power up the laser */
1109         reg = rd32(E1000_CTRL_EXT);
1110         reg &= ~E1000_CTRL_EXT_SDP3_DATA;
1111         wr32(E1000_CTRL_EXT, reg);
1112
1113         /* flush the write to verify completion */
1114         wrfl();
1115         msleep(1);
1116 }
1117
1118 /**
1119  *  igb_get_pcs_speed_and_duplex_82575 - Retrieve current speed/duplex
1120  *  @hw: pointer to the HW structure
1121  *  @speed: stores the current speed
1122  *  @duplex: stores the current duplex
1123  *
1124  *  Using the physical coding sub-layer (PCS), retrieve the current speed and
1125  *  duplex, then store the values in the pointers provided.
1126  **/
1127 static s32 igb_get_pcs_speed_and_duplex_82575(struct e1000_hw *hw, u16 *speed,
1128                                                 u16 *duplex)
1129 {
1130         struct e1000_mac_info *mac = &hw->mac;
1131         u32 pcs;
1132
1133         /* Set up defaults for the return values of this function */
1134         mac->serdes_has_link = false;
1135         *speed = 0;
1136         *duplex = 0;
1137
1138         /*
1139          * Read the PCS Status register for link state. For non-copper mode,
1140          * the status register is not accurate. The PCS status register is
1141          * used instead.
1142          */
1143         pcs = rd32(E1000_PCS_LSTAT);
1144
1145         /*
1146          * The link up bit determines when link is up on autoneg. The sync ok
1147          * gets set once both sides sync up and agree upon link. Stable link
1148          * can be determined by checking for both link up and link sync ok
1149          */
1150         if ((pcs & E1000_PCS_LSTS_LINK_OK) && (pcs & E1000_PCS_LSTS_SYNK_OK)) {
1151                 mac->serdes_has_link = true;
1152
1153                 /* Detect and store PCS speed */
1154                 if (pcs & E1000_PCS_LSTS_SPEED_1000) {
1155                         *speed = SPEED_1000;
1156                 } else if (pcs & E1000_PCS_LSTS_SPEED_100) {
1157                         *speed = SPEED_100;
1158                 } else {
1159                         *speed = SPEED_10;
1160                 }
1161
1162                 /* Detect and store PCS duplex */
1163                 if (pcs & E1000_PCS_LSTS_DUPLEX_FULL) {
1164                         *duplex = FULL_DUPLEX;
1165                 } else {
1166                         *duplex = HALF_DUPLEX;
1167                 }
1168         }
1169
1170         return 0;
1171 }
1172
1173 /**
1174  *  igb_shutdown_serdes_link_82575 - Remove link during power down
1175  *  @hw: pointer to the HW structure
1176  *
1177  *  In the case of fiber serdes, shut down optics and PCS on driver unload
1178  *  when management pass thru is not enabled.
1179  **/
1180 void igb_shutdown_serdes_link_82575(struct e1000_hw *hw)
1181 {
1182         u32 reg;
1183
1184         if (hw->phy.media_type != e1000_media_type_internal_serdes &&
1185             igb_sgmii_active_82575(hw))
1186                 return;
1187
1188         if (!igb_enable_mng_pass_thru(hw)) {
1189                 /* Disable PCS to turn off link */
1190                 reg = rd32(E1000_PCS_CFG0);
1191                 reg &= ~E1000_PCS_CFG_PCS_EN;
1192                 wr32(E1000_PCS_CFG0, reg);
1193
1194                 /* shutdown the laser */
1195                 reg = rd32(E1000_CTRL_EXT);
1196                 reg |= E1000_CTRL_EXT_SDP3_DATA;
1197                 wr32(E1000_CTRL_EXT, reg);
1198
1199                 /* flush the write to verify completion */
1200                 wrfl();
1201                 msleep(1);
1202         }
1203 }
1204
1205 /**
1206  *  igb_reset_hw_82575 - Reset hardware
1207  *  @hw: pointer to the HW structure
1208  *
1209  *  This resets the hardware into a known state.  This is a
1210  *  function pointer entry point called by the api module.
1211  **/
1212 static s32 igb_reset_hw_82575(struct e1000_hw *hw)
1213 {
1214         u32 ctrl, icr;
1215         s32 ret_val;
1216
1217         /*
1218          * Prevent the PCI-E bus from sticking if there is no TLP connection
1219          * on the last TLP read/write transaction when MAC is reset.
1220          */
1221         ret_val = igb_disable_pcie_master(hw);
1222         if (ret_val)
1223                 hw_dbg("PCI-E Master disable polling has failed.\n");
1224
1225         /* set the completion timeout for interface */
1226         ret_val = igb_set_pcie_completion_timeout(hw);
1227         if (ret_val) {
1228                 hw_dbg("PCI-E Set completion timeout has failed.\n");
1229         }
1230
1231         hw_dbg("Masking off all interrupts\n");
1232         wr32(E1000_IMC, 0xffffffff);
1233
1234         wr32(E1000_RCTL, 0);
1235         wr32(E1000_TCTL, E1000_TCTL_PSP);
1236         wrfl();
1237
1238         msleep(10);
1239
1240         ctrl = rd32(E1000_CTRL);
1241
1242         hw_dbg("Issuing a global reset to MAC\n");
1243         wr32(E1000_CTRL, ctrl | E1000_CTRL_RST);
1244
1245         ret_val = igb_get_auto_rd_done(hw);
1246         if (ret_val) {
1247                 /*
1248                  * When auto config read does not complete, do not
1249                  * return with an error. This can happen in situations
1250                  * where there is no eeprom and prevents getting link.
1251                  */
1252                 hw_dbg("Auto Read Done did not complete\n");
1253         }
1254
1255         /* If EEPROM is not present, run manual init scripts */
1256         if ((rd32(E1000_EECD) & E1000_EECD_PRES) == 0)
1257                 igb_reset_init_script_82575(hw);
1258
1259         /* Clear any pending interrupt events. */
1260         wr32(E1000_IMC, 0xffffffff);
1261         icr = rd32(E1000_ICR);
1262
1263         /* Install any alternate MAC address into RAR0 */
1264         ret_val = igb_check_alt_mac_addr(hw);
1265
1266         return ret_val;
1267 }
1268
1269 /**
1270  *  igb_init_hw_82575 - Initialize hardware
1271  *  @hw: pointer to the HW structure
1272  *
1273  *  This inits the hardware readying it for operation.
1274  **/
1275 static s32 igb_init_hw_82575(struct e1000_hw *hw)
1276 {
1277         struct e1000_mac_info *mac = &hw->mac;
1278         s32 ret_val;
1279         u16 i, rar_count = mac->rar_entry_count;
1280
1281         /* Initialize identification LED */
1282         ret_val = igb_id_led_init(hw);
1283         if (ret_val) {
1284                 hw_dbg("Error initializing identification LED\n");
1285                 /* This is not fatal and we should not stop init due to this */
1286         }
1287
1288         /* Disabling VLAN filtering */
1289         hw_dbg("Initializing the IEEE VLAN\n");
1290         if (hw->mac.type == e1000_i350)
1291                 igb_clear_vfta_i350(hw);
1292         else
1293                 igb_clear_vfta(hw);
1294
1295         /* Setup the receive address */
1296         igb_init_rx_addrs(hw, rar_count);
1297
1298         /* Zero out the Multicast HASH table */
1299         hw_dbg("Zeroing the MTA\n");
1300         for (i = 0; i < mac->mta_reg_count; i++)
1301                 array_wr32(E1000_MTA, i, 0);
1302
1303         /* Zero out the Unicast HASH table */
1304         hw_dbg("Zeroing the UTA\n");
1305         for (i = 0; i < mac->uta_reg_count; i++)
1306                 array_wr32(E1000_UTA, i, 0);
1307
1308         /* Setup link and flow control */
1309         ret_val = igb_setup_link(hw);
1310
1311         /*
1312          * Clear all of the statistics registers (clear on read).  It is
1313          * important that we do this after we have tried to establish link
1314          * because the symbol error count will increment wildly if there
1315          * is no link.
1316          */
1317         igb_clear_hw_cntrs_82575(hw);
1318         return ret_val;
1319 }
1320
1321 /**
1322  *  igb_setup_copper_link_82575 - Configure copper link settings
1323  *  @hw: pointer to the HW structure
1324  *
1325  *  Configures the link for auto-neg or forced speed and duplex.  Then we check
1326  *  for link, once link is established calls to configure collision distance
1327  *  and flow control are called.
1328  **/
1329 static s32 igb_setup_copper_link_82575(struct e1000_hw *hw)
1330 {
1331         u32 ctrl;
1332         s32  ret_val;
1333         u32 phpm_reg;
1334
1335         ctrl = rd32(E1000_CTRL);
1336         ctrl |= E1000_CTRL_SLU;
1337         ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1338         wr32(E1000_CTRL, ctrl);
1339
1340         /* Clear Go Link Disconnect bit */
1341         if (hw->mac.type >= e1000_82580) {
1342                 phpm_reg = rd32(E1000_82580_PHY_POWER_MGMT);
1343                 phpm_reg &= ~E1000_82580_PM_GO_LINKD;
1344                 wr32(E1000_82580_PHY_POWER_MGMT, phpm_reg);
1345         }
1346
1347         ret_val = igb_setup_serdes_link_82575(hw);
1348         if (ret_val)
1349                 goto out;
1350
1351         if (igb_sgmii_active_82575(hw) && !hw->phy.reset_disable) {
1352                 /* allow time for SFP cage time to power up phy */
1353                 msleep(300);
1354
1355                 ret_val = hw->phy.ops.reset(hw);
1356                 if (ret_val) {
1357                         hw_dbg("Error resetting the PHY.\n");
1358                         goto out;
1359                 }
1360         }
1361         switch (hw->phy.type) {
1362         case e1000_phy_i210:
1363         case e1000_phy_m88:
1364                 switch (hw->phy.id) {
1365                 case I347AT4_E_PHY_ID:
1366                 case M88E1112_E_PHY_ID:
1367                 case I210_I_PHY_ID:
1368                         ret_val = igb_copper_link_setup_m88_gen2(hw);
1369                         break;
1370                 default:
1371                         ret_val = igb_copper_link_setup_m88(hw);
1372                         break;
1373                 }
1374                 break;
1375         case e1000_phy_igp_3:
1376                 ret_val = igb_copper_link_setup_igp(hw);
1377                 break;
1378         case e1000_phy_82580:
1379                 ret_val = igb_copper_link_setup_82580(hw);
1380                 break;
1381         default:
1382                 ret_val = -E1000_ERR_PHY;
1383                 break;
1384         }
1385
1386         if (ret_val)
1387                 goto out;
1388
1389         ret_val = igb_setup_copper_link(hw);
1390 out:
1391         return ret_val;
1392 }
1393
1394 /**
1395  *  igb_setup_serdes_link_82575 - Setup link for serdes
1396  *  @hw: pointer to the HW structure
1397  *
1398  *  Configure the physical coding sub-layer (PCS) link.  The PCS link is
1399  *  used on copper connections where the serialized gigabit media independent
1400  *  interface (sgmii), or serdes fiber is being used.  Configures the link
1401  *  for auto-negotiation or forces speed/duplex.
1402  **/
1403 static s32 igb_setup_serdes_link_82575(struct e1000_hw *hw)
1404 {
1405         u32 ctrl_ext, ctrl_reg, reg, anadv_reg;
1406         bool pcs_autoneg;
1407         s32 ret_val = E1000_SUCCESS;
1408         u16 data;
1409
1410         if ((hw->phy.media_type != e1000_media_type_internal_serdes) &&
1411             !igb_sgmii_active_82575(hw))
1412                 return ret_val;
1413
1414
1415         /*
1416          * On the 82575, SerDes loopback mode persists until it is
1417          * explicitly turned off or a power cycle is performed.  A read to
1418          * the register does not indicate its status.  Therefore, we ensure
1419          * loopback mode is disabled during initialization.
1420          */
1421         wr32(E1000_SCTL, E1000_SCTL_DISABLE_SERDES_LOOPBACK);
1422
1423         /* power on the sfp cage if present */
1424         ctrl_ext = rd32(E1000_CTRL_EXT);
1425         ctrl_ext &= ~E1000_CTRL_EXT_SDP3_DATA;
1426         wr32(E1000_CTRL_EXT, ctrl_ext);
1427
1428         ctrl_reg = rd32(E1000_CTRL);
1429         ctrl_reg |= E1000_CTRL_SLU;
1430
1431         if (hw->mac.type == e1000_82575 || hw->mac.type == e1000_82576) {
1432                 /* set both sw defined pins */
1433                 ctrl_reg |= E1000_CTRL_SWDPIN0 | E1000_CTRL_SWDPIN1;
1434
1435                 /* Set switch control to serdes energy detect */
1436                 reg = rd32(E1000_CONNSW);
1437                 reg |= E1000_CONNSW_ENRGSRC;
1438                 wr32(E1000_CONNSW, reg);
1439         }
1440
1441         reg = rd32(E1000_PCS_LCTL);
1442
1443         /* default pcs_autoneg to the same setting as mac autoneg */
1444         pcs_autoneg = hw->mac.autoneg;
1445
1446         switch (ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK) {
1447         case E1000_CTRL_EXT_LINK_MODE_SGMII:
1448                 /* sgmii mode lets the phy handle forcing speed/duplex */
1449                 pcs_autoneg = true;
1450                 /* autoneg time out should be disabled for SGMII mode */
1451                 reg &= ~(E1000_PCS_LCTL_AN_TIMEOUT);
1452                 break;
1453         case E1000_CTRL_EXT_LINK_MODE_1000BASE_KX:
1454                 /* disable PCS autoneg and support parallel detect only */
1455                 pcs_autoneg = false;
1456         default:
1457                 if (hw->mac.type == e1000_82575 ||
1458                     hw->mac.type == e1000_82576) {
1459                         ret_val = hw->nvm.ops.read(hw, NVM_COMPAT, 1, &data);
1460                         if (ret_val) {
1461                                 printk(KERN_DEBUG "NVM Read Error\n\n");
1462                                 return ret_val;
1463                         }
1464
1465                         if (data & E1000_EEPROM_PCS_AUTONEG_DISABLE_BIT)
1466                                 pcs_autoneg = false;
1467                 }
1468
1469                 /*
1470                  * non-SGMII modes only supports a speed of 1000/Full for the
1471                  * link so it is best to just force the MAC and let the pcs
1472                  * link either autoneg or be forced to 1000/Full
1473                  */
1474                 ctrl_reg |= E1000_CTRL_SPD_1000 | E1000_CTRL_FRCSPD |
1475                             E1000_CTRL_FD | E1000_CTRL_FRCDPX;
1476
1477                 /* set speed of 1000/Full if speed/duplex is forced */
1478                 reg |= E1000_PCS_LCTL_FSV_1000 | E1000_PCS_LCTL_FDV_FULL;
1479                 break;
1480         }
1481
1482         wr32(E1000_CTRL, ctrl_reg);
1483
1484         /*
1485          * New SerDes mode allows for forcing speed or autonegotiating speed
1486          * at 1gb. Autoneg should be default set by most drivers. This is the
1487          * mode that will be compatible with older link partners and switches.
1488          * However, both are supported by the hardware and some drivers/tools.
1489          */
1490         reg &= ~(E1000_PCS_LCTL_AN_ENABLE | E1000_PCS_LCTL_FLV_LINK_UP |
1491                 E1000_PCS_LCTL_FSD | E1000_PCS_LCTL_FORCE_LINK);
1492
1493         if (pcs_autoneg) {
1494                 /* Set PCS register for autoneg */
1495                 reg |= E1000_PCS_LCTL_AN_ENABLE | /* Enable Autoneg */
1496                        E1000_PCS_LCTL_AN_RESTART; /* Restart autoneg */
1497
1498                 /* Disable force flow control for autoneg */
1499                 reg &= ~E1000_PCS_LCTL_FORCE_FCTRL;
1500
1501                 /* Configure flow control advertisement for autoneg */
1502                 anadv_reg = rd32(E1000_PCS_ANADV);
1503                 anadv_reg &= ~(E1000_TXCW_ASM_DIR | E1000_TXCW_PAUSE);
1504                 switch (hw->fc.requested_mode) {
1505                 case e1000_fc_full:
1506                 case e1000_fc_rx_pause:
1507                         anadv_reg |= E1000_TXCW_ASM_DIR;
1508                         anadv_reg |= E1000_TXCW_PAUSE;
1509                         break;
1510                 case e1000_fc_tx_pause:
1511                         anadv_reg |= E1000_TXCW_ASM_DIR;
1512                         break;
1513                 default:
1514                         break;
1515                 }
1516                 wr32(E1000_PCS_ANADV, anadv_reg);
1517
1518                 hw_dbg("Configuring Autoneg:PCS_LCTL=0x%08X\n", reg);
1519         } else {
1520                 /* Set PCS register for forced link */
1521                 reg |= E1000_PCS_LCTL_FSD;        /* Force Speed */
1522
1523                 /* Force flow control for forced link */
1524                 reg |= E1000_PCS_LCTL_FORCE_FCTRL;
1525
1526                 hw_dbg("Configuring Forced Link:PCS_LCTL=0x%08X\n", reg);
1527         }
1528
1529         wr32(E1000_PCS_LCTL, reg);
1530
1531         if (!pcs_autoneg && !igb_sgmii_active_82575(hw))
1532                 igb_force_mac_fc(hw);
1533
1534         return ret_val;
1535 }
1536
1537 /**
1538  *  igb_sgmii_active_82575 - Return sgmii state
1539  *  @hw: pointer to the HW structure
1540  *
1541  *  82575 silicon has a serialized gigabit media independent interface (sgmii)
1542  *  which can be enabled for use in the embedded applications.  Simply
1543  *  return the current state of the sgmii interface.
1544  **/
1545 static bool igb_sgmii_active_82575(struct e1000_hw *hw)
1546 {
1547         struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575;
1548         return dev_spec->sgmii_active;
1549 }
1550
1551 /**
1552  *  igb_reset_init_script_82575 - Inits HW defaults after reset
1553  *  @hw: pointer to the HW structure
1554  *
1555  *  Inits recommended HW defaults after a reset when there is no EEPROM
1556  *  detected. This is only for the 82575.
1557  **/
1558 static s32 igb_reset_init_script_82575(struct e1000_hw *hw)
1559 {
1560         if (hw->mac.type == e1000_82575) {
1561                 hw_dbg("Running reset init script for 82575\n");
1562                 /* SerDes configuration via SERDESCTRL */
1563                 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x00, 0x0C);
1564                 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x01, 0x78);
1565                 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x1B, 0x23);
1566                 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x23, 0x15);
1567
1568                 /* CCM configuration via CCMCTL register */
1569                 igb_write_8bit_ctrl_reg(hw, E1000_CCMCTL, 0x14, 0x00);
1570                 igb_write_8bit_ctrl_reg(hw, E1000_CCMCTL, 0x10, 0x00);
1571
1572                 /* PCIe lanes configuration */
1573                 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x00, 0xEC);
1574                 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x61, 0xDF);
1575                 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x34, 0x05);
1576                 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x2F, 0x81);
1577
1578                 /* PCIe PLL Configuration */
1579                 igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x02, 0x47);
1580                 igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x14, 0x00);
1581                 igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x10, 0x00);
1582         }
1583
1584         return 0;
1585 }
1586
1587 /**
1588  *  igb_read_mac_addr_82575 - Read device MAC address
1589  *  @hw: pointer to the HW structure
1590  **/
1591 static s32 igb_read_mac_addr_82575(struct e1000_hw *hw)
1592 {
1593         s32 ret_val = 0;
1594
1595         /*
1596          * If there's an alternate MAC address place it in RAR0
1597          * so that it will override the Si installed default perm
1598          * address.
1599          */
1600         ret_val = igb_check_alt_mac_addr(hw);
1601         if (ret_val)
1602                 goto out;
1603
1604         ret_val = igb_read_mac_addr(hw);
1605
1606 out:
1607         return ret_val;
1608 }
1609
1610 /**
1611  * igb_power_down_phy_copper_82575 - Remove link during PHY power down
1612  * @hw: pointer to the HW structure
1613  *
1614  * In the case of a PHY power down to save power, or to turn off link during a
1615  * driver unload, or wake on lan is not enabled, remove the link.
1616  **/
1617 void igb_power_down_phy_copper_82575(struct e1000_hw *hw)
1618 {
1619         /* If the management interface is not enabled, then power down */
1620         if (!(igb_enable_mng_pass_thru(hw) || igb_check_reset_block(hw)))
1621                 igb_power_down_phy_copper(hw);
1622 }
1623
1624 /**
1625  *  igb_clear_hw_cntrs_82575 - Clear device specific hardware counters
1626  *  @hw: pointer to the HW structure
1627  *
1628  *  Clears the hardware counters by reading the counter registers.
1629  **/
1630 static void igb_clear_hw_cntrs_82575(struct e1000_hw *hw)
1631 {
1632         igb_clear_hw_cntrs_base(hw);
1633
1634         rd32(E1000_PRC64);
1635         rd32(E1000_PRC127);
1636         rd32(E1000_PRC255);
1637         rd32(E1000_PRC511);
1638         rd32(E1000_PRC1023);
1639         rd32(E1000_PRC1522);
1640         rd32(E1000_PTC64);
1641         rd32(E1000_PTC127);
1642         rd32(E1000_PTC255);
1643         rd32(E1000_PTC511);
1644         rd32(E1000_PTC1023);
1645         rd32(E1000_PTC1522);
1646
1647         rd32(E1000_ALGNERRC);
1648         rd32(E1000_RXERRC);
1649         rd32(E1000_TNCRS);
1650         rd32(E1000_CEXTERR);
1651         rd32(E1000_TSCTC);
1652         rd32(E1000_TSCTFC);
1653
1654         rd32(E1000_MGTPRC);
1655         rd32(E1000_MGTPDC);
1656         rd32(E1000_MGTPTC);
1657
1658         rd32(E1000_IAC);
1659         rd32(E1000_ICRXOC);
1660
1661         rd32(E1000_ICRXPTC);
1662         rd32(E1000_ICRXATC);
1663         rd32(E1000_ICTXPTC);
1664         rd32(E1000_ICTXATC);
1665         rd32(E1000_ICTXQEC);
1666         rd32(E1000_ICTXQMTC);
1667         rd32(E1000_ICRXDMTC);
1668
1669         rd32(E1000_CBTMPC);
1670         rd32(E1000_HTDPMC);
1671         rd32(E1000_CBRMPC);
1672         rd32(E1000_RPTHC);
1673         rd32(E1000_HGPTC);
1674         rd32(E1000_HTCBDPC);
1675         rd32(E1000_HGORCL);
1676         rd32(E1000_HGORCH);
1677         rd32(E1000_HGOTCL);
1678         rd32(E1000_HGOTCH);
1679         rd32(E1000_LENERRS);
1680
1681         /* This register should not be read in copper configurations */
1682         if (hw->phy.media_type == e1000_media_type_internal_serdes ||
1683             igb_sgmii_active_82575(hw))
1684                 rd32(E1000_SCVPC);
1685 }
1686
1687 /**
1688  *  igb_rx_fifo_flush_82575 - Clean rx fifo after RX enable
1689  *  @hw: pointer to the HW structure
1690  *
1691  *  After rx enable if managability is enabled then there is likely some
1692  *  bad data at the start of the fifo and possibly in the DMA fifo.  This
1693  *  function clears the fifos and flushes any packets that came in as rx was
1694  *  being enabled.
1695  **/
1696 void igb_rx_fifo_flush_82575(struct e1000_hw *hw)
1697 {
1698         u32 rctl, rlpml, rxdctl[4], rfctl, temp_rctl, rx_enabled;
1699         int i, ms_wait;
1700
1701         if (hw->mac.type != e1000_82575 ||
1702             !(rd32(E1000_MANC) & E1000_MANC_RCV_TCO_EN))
1703                 return;
1704
1705         /* Disable all RX queues */
1706         for (i = 0; i < 4; i++) {
1707                 rxdctl[i] = rd32(E1000_RXDCTL(i));
1708                 wr32(E1000_RXDCTL(i),
1709                      rxdctl[i] & ~E1000_RXDCTL_QUEUE_ENABLE);
1710         }
1711         /* Poll all queues to verify they have shut down */
1712         for (ms_wait = 0; ms_wait < 10; ms_wait++) {
1713                 msleep(1);
1714                 rx_enabled = 0;
1715                 for (i = 0; i < 4; i++)
1716                         rx_enabled |= rd32(E1000_RXDCTL(i));
1717                 if (!(rx_enabled & E1000_RXDCTL_QUEUE_ENABLE))
1718                         break;
1719         }
1720
1721         if (ms_wait == 10)
1722                 hw_dbg("Queue disable timed out after 10ms\n");
1723
1724         /* Clear RLPML, RCTL.SBP, RFCTL.LEF, and set RCTL.LPE so that all
1725          * incoming packets are rejected.  Set enable and wait 2ms so that
1726          * any packet that was coming in as RCTL.EN was set is flushed
1727          */
1728         rfctl = rd32(E1000_RFCTL);
1729         wr32(E1000_RFCTL, rfctl & ~E1000_RFCTL_LEF);
1730
1731         rlpml = rd32(E1000_RLPML);
1732         wr32(E1000_RLPML, 0);
1733
1734         rctl = rd32(E1000_RCTL);
1735         temp_rctl = rctl & ~(E1000_RCTL_EN | E1000_RCTL_SBP);
1736         temp_rctl |= E1000_RCTL_LPE;
1737
1738         wr32(E1000_RCTL, temp_rctl);
1739         wr32(E1000_RCTL, temp_rctl | E1000_RCTL_EN);
1740         wrfl();
1741         msleep(2);
1742
1743         /* Enable RX queues that were previously enabled and restore our
1744          * previous state
1745          */
1746         for (i = 0; i < 4; i++)
1747                 wr32(E1000_RXDCTL(i), rxdctl[i]);
1748         wr32(E1000_RCTL, rctl);
1749         wrfl();
1750
1751         wr32(E1000_RLPML, rlpml);
1752         wr32(E1000_RFCTL, rfctl);
1753
1754         /* Flush receive errors generated by workaround */
1755         rd32(E1000_ROC);
1756         rd32(E1000_RNBC);
1757         rd32(E1000_MPC);
1758 }
1759
1760 /**
1761  *  igb_set_pcie_completion_timeout - set pci-e completion timeout
1762  *  @hw: pointer to the HW structure
1763  *
1764  *  The defaults for 82575 and 82576 should be in the range of 50us to 50ms,
1765  *  however the hardware default for these parts is 500us to 1ms which is less
1766  *  than the 10ms recommended by the pci-e spec.  To address this we need to
1767  *  increase the value to either 10ms to 200ms for capability version 1 config,
1768  *  or 16ms to 55ms for version 2.
1769  **/
1770 static s32 igb_set_pcie_completion_timeout(struct e1000_hw *hw)
1771 {
1772         u32 gcr = rd32(E1000_GCR);
1773         s32 ret_val = 0;
1774         u16 pcie_devctl2;
1775
1776         /* only take action if timeout value is defaulted to 0 */
1777         if (gcr & E1000_GCR_CMPL_TMOUT_MASK)
1778                 goto out;
1779
1780         /*
1781          * if capababilities version is type 1 we can write the
1782          * timeout of 10ms to 200ms through the GCR register
1783          */
1784         if (!(gcr & E1000_GCR_CAP_VER2)) {
1785                 gcr |= E1000_GCR_CMPL_TMOUT_10ms;
1786                 goto out;
1787         }
1788
1789         /*
1790          * for version 2 capabilities we need to write the config space
1791          * directly in order to set the completion timeout value for
1792          * 16ms to 55ms
1793          */
1794         ret_val = igb_read_pcie_cap_reg(hw, PCIE_DEVICE_CONTROL2,
1795                                         &pcie_devctl2);
1796         if (ret_val)
1797                 goto out;
1798
1799         pcie_devctl2 |= PCIE_DEVICE_CONTROL2_16ms;
1800
1801         ret_val = igb_write_pcie_cap_reg(hw, PCIE_DEVICE_CONTROL2,
1802                                          &pcie_devctl2);
1803 out:
1804         /* disable completion timeout resend */
1805         gcr &= ~E1000_GCR_CMPL_TMOUT_RESEND;
1806
1807         wr32(E1000_GCR, gcr);
1808         return ret_val;
1809 }
1810
1811 /**
1812  *  igb_vmdq_set_anti_spoofing_pf - enable or disable anti-spoofing
1813  *  @hw: pointer to the hardware struct
1814  *  @enable: state to enter, either enabled or disabled
1815  *  @pf: Physical Function pool - do not set anti-spoofing for the PF
1816  *
1817  *  enables/disables L2 switch anti-spoofing functionality.
1818  **/
1819 void igb_vmdq_set_anti_spoofing_pf(struct e1000_hw *hw, bool enable, int pf)
1820 {
1821         u32 dtxswc;
1822
1823         switch (hw->mac.type) {
1824         case e1000_82576:
1825         case e1000_i350:
1826                 dtxswc = rd32(E1000_DTXSWC);
1827                 if (enable) {
1828                         dtxswc |= (E1000_DTXSWC_MAC_SPOOF_MASK |
1829                                    E1000_DTXSWC_VLAN_SPOOF_MASK);
1830                         /* The PF can spoof - it has to in order to
1831                          * support emulation mode NICs */
1832                         dtxswc ^= (1 << pf | 1 << (pf + MAX_NUM_VFS));
1833                 } else {
1834                         dtxswc &= ~(E1000_DTXSWC_MAC_SPOOF_MASK |
1835                                     E1000_DTXSWC_VLAN_SPOOF_MASK);
1836                 }
1837                 wr32(E1000_DTXSWC, dtxswc);
1838                 break;
1839         default:
1840                 break;
1841         }
1842 }
1843
1844 /**
1845  *  igb_vmdq_set_loopback_pf - enable or disable vmdq loopback
1846  *  @hw: pointer to the hardware struct
1847  *  @enable: state to enter, either enabled or disabled
1848  *
1849  *  enables/disables L2 switch loopback functionality.
1850  **/
1851 void igb_vmdq_set_loopback_pf(struct e1000_hw *hw, bool enable)
1852 {
1853         u32 dtxswc;
1854
1855         switch (hw->mac.type) {
1856         case e1000_82576:
1857                 dtxswc = rd32(E1000_DTXSWC);
1858                 if (enable)
1859                         dtxswc |= E1000_DTXSWC_VMDQ_LOOPBACK_EN;
1860                 else
1861                         dtxswc &= ~E1000_DTXSWC_VMDQ_LOOPBACK_EN;
1862                 wr32(E1000_DTXSWC, dtxswc);
1863                 break;
1864         case e1000_i350:
1865                 dtxswc = rd32(E1000_TXSWC);
1866                 if (enable)
1867                         dtxswc |= E1000_DTXSWC_VMDQ_LOOPBACK_EN;
1868                 else
1869                         dtxswc &= ~E1000_DTXSWC_VMDQ_LOOPBACK_EN;
1870                 wr32(E1000_TXSWC, dtxswc);
1871                 break;
1872         default:
1873                 /* Currently no other hardware supports loopback */
1874                 break;
1875         }
1876
1877
1878 }
1879
1880 /**
1881  *  igb_vmdq_set_replication_pf - enable or disable vmdq replication
1882  *  @hw: pointer to the hardware struct
1883  *  @enable: state to enter, either enabled or disabled
1884  *
1885  *  enables/disables replication of packets across multiple pools.
1886  **/
1887 void igb_vmdq_set_replication_pf(struct e1000_hw *hw, bool enable)
1888 {
1889         u32 vt_ctl = rd32(E1000_VT_CTL);
1890
1891         if (enable)
1892                 vt_ctl |= E1000_VT_CTL_VM_REPL_EN;
1893         else
1894                 vt_ctl &= ~E1000_VT_CTL_VM_REPL_EN;
1895
1896         wr32(E1000_VT_CTL, vt_ctl);
1897 }
1898
1899 /**
1900  *  igb_read_phy_reg_82580 - Read 82580 MDI control register
1901  *  @hw: pointer to the HW structure
1902  *  @offset: register offset to be read
1903  *  @data: pointer to the read data
1904  *
1905  *  Reads the MDI control register in the PHY at offset and stores the
1906  *  information read to data.
1907  **/
1908 static s32 igb_read_phy_reg_82580(struct e1000_hw *hw, u32 offset, u16 *data)
1909 {
1910         s32 ret_val;
1911
1912
1913         ret_val = hw->phy.ops.acquire(hw);
1914         if (ret_val)
1915                 goto out;
1916
1917         ret_val = igb_read_phy_reg_mdic(hw, offset, data);
1918
1919         hw->phy.ops.release(hw);
1920
1921 out:
1922         return ret_val;
1923 }
1924
1925 /**
1926  *  igb_write_phy_reg_82580 - Write 82580 MDI control register
1927  *  @hw: pointer to the HW structure
1928  *  @offset: register offset to write to
1929  *  @data: data to write to register at offset
1930  *
1931  *  Writes data to MDI control register in the PHY at offset.
1932  **/
1933 static s32 igb_write_phy_reg_82580(struct e1000_hw *hw, u32 offset, u16 data)
1934 {
1935         s32 ret_val;
1936
1937
1938         ret_val = hw->phy.ops.acquire(hw);
1939         if (ret_val)
1940                 goto out;
1941
1942         ret_val = igb_write_phy_reg_mdic(hw, offset, data);
1943
1944         hw->phy.ops.release(hw);
1945
1946 out:
1947         return ret_val;
1948 }
1949
1950 /**
1951  *  igb_reset_mdicnfg_82580 - Reset MDICNFG destination and com_mdio bits
1952  *  @hw: pointer to the HW structure
1953  *
1954  *  This resets the the MDICNFG.Destination and MDICNFG.Com_MDIO bits based on
1955  *  the values found in the EEPROM.  This addresses an issue in which these
1956  *  bits are not restored from EEPROM after reset.
1957  **/
1958 static s32 igb_reset_mdicnfg_82580(struct e1000_hw *hw)
1959 {
1960         s32 ret_val = 0;
1961         u32 mdicnfg;
1962         u16 nvm_data = 0;
1963
1964         if (hw->mac.type != e1000_82580)
1965                 goto out;
1966         if (!igb_sgmii_active_82575(hw))
1967                 goto out;
1968
1969         ret_val = hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A +
1970                                    NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1,
1971                                    &nvm_data);
1972         if (ret_val) {
1973                 hw_dbg("NVM Read Error\n");
1974                 goto out;
1975         }
1976
1977         mdicnfg = rd32(E1000_MDICNFG);
1978         if (nvm_data & NVM_WORD24_EXT_MDIO)
1979                 mdicnfg |= E1000_MDICNFG_EXT_MDIO;
1980         if (nvm_data & NVM_WORD24_COM_MDIO)
1981                 mdicnfg |= E1000_MDICNFG_COM_MDIO;
1982         wr32(E1000_MDICNFG, mdicnfg);
1983 out:
1984         return ret_val;
1985 }
1986
1987 /**
1988  *  igb_reset_hw_82580 - Reset hardware
1989  *  @hw: pointer to the HW structure
1990  *
1991  *  This resets function or entire device (all ports, etc.)
1992  *  to a known state.
1993  **/
1994 static s32 igb_reset_hw_82580(struct e1000_hw *hw)
1995 {
1996         s32 ret_val = 0;
1997         /* BH SW mailbox bit in SW_FW_SYNC */
1998         u16 swmbsw_mask = E1000_SW_SYNCH_MB;
1999         u32 ctrl, icr;
2000         bool global_device_reset = hw->dev_spec._82575.global_device_reset;
2001
2002
2003         hw->dev_spec._82575.global_device_reset = false;
2004
2005         /* due to hw errata, global device reset doesn't always
2006          * work on 82580
2007          */
2008         if (hw->mac.type == e1000_82580)
2009                 global_device_reset = false;
2010
2011         /* Get current control state. */
2012         ctrl = rd32(E1000_CTRL);
2013
2014         /*
2015          * Prevent the PCI-E bus from sticking if there is no TLP connection
2016          * on the last TLP read/write transaction when MAC is reset.
2017          */
2018         ret_val = igb_disable_pcie_master(hw);
2019         if (ret_val)
2020                 hw_dbg("PCI-E Master disable polling has failed.\n");
2021
2022         hw_dbg("Masking off all interrupts\n");
2023         wr32(E1000_IMC, 0xffffffff);
2024         wr32(E1000_RCTL, 0);
2025         wr32(E1000_TCTL, E1000_TCTL_PSP);
2026         wrfl();
2027
2028         msleep(10);
2029
2030         /* Determine whether or not a global dev reset is requested */
2031         if (global_device_reset &&
2032                 hw->mac.ops.acquire_swfw_sync(hw, swmbsw_mask))
2033                         global_device_reset = false;
2034
2035         if (global_device_reset &&
2036                 !(rd32(E1000_STATUS) & E1000_STAT_DEV_RST_SET))
2037                 ctrl |= E1000_CTRL_DEV_RST;
2038         else
2039                 ctrl |= E1000_CTRL_RST;
2040
2041         wr32(E1000_CTRL, ctrl);
2042         wrfl();
2043
2044         /* Add delay to insure DEV_RST has time to complete */
2045         if (global_device_reset)
2046                 msleep(5);
2047
2048         ret_val = igb_get_auto_rd_done(hw);
2049         if (ret_val) {
2050                 /*
2051                  * When auto config read does not complete, do not
2052                  * return with an error. This can happen in situations
2053                  * where there is no eeprom and prevents getting link.
2054                  */
2055                 hw_dbg("Auto Read Done did not complete\n");
2056         }
2057
2058         /* If EEPROM is not present, run manual init scripts */
2059         if ((rd32(E1000_EECD) & E1000_EECD_PRES) == 0)
2060                 igb_reset_init_script_82575(hw);
2061
2062         /* clear global device reset status bit */
2063         wr32(E1000_STATUS, E1000_STAT_DEV_RST_SET);
2064
2065         /* Clear any pending interrupt events. */
2066         wr32(E1000_IMC, 0xffffffff);
2067         icr = rd32(E1000_ICR);
2068
2069         ret_val = igb_reset_mdicnfg_82580(hw);
2070         if (ret_val)
2071                 hw_dbg("Could not reset MDICNFG based on EEPROM\n");
2072
2073         /* Install any alternate MAC address into RAR0 */
2074         ret_val = igb_check_alt_mac_addr(hw);
2075
2076         /* Release semaphore */
2077         if (global_device_reset)
2078                 hw->mac.ops.release_swfw_sync(hw, swmbsw_mask);
2079
2080         return ret_val;
2081 }
2082
2083 /**
2084  *  igb_rxpbs_adjust_82580 - adjust RXPBS value to reflect actual RX PBA size
2085  *  @data: data received by reading RXPBS register
2086  *
2087  *  The 82580 uses a table based approach for packet buffer allocation sizes.
2088  *  This function converts the retrieved value into the correct table value
2089  *     0x0 0x1 0x2 0x3 0x4 0x5 0x6 0x7
2090  *  0x0 36  72 144   1   2   4   8  16
2091  *  0x8 35  70 140 rsv rsv rsv rsv rsv
2092  */
2093 u16 igb_rxpbs_adjust_82580(u32 data)
2094 {
2095         u16 ret_val = 0;
2096
2097         if (data < E1000_82580_RXPBS_TABLE_SIZE)
2098                 ret_val = e1000_82580_rxpbs_table[data];
2099
2100         return ret_val;
2101 }
2102
2103 /**
2104  *  igb_validate_nvm_checksum_with_offset - Validate EEPROM
2105  *  checksum
2106  *  @hw: pointer to the HW structure
2107  *  @offset: offset in words of the checksum protected region
2108  *
2109  *  Calculates the EEPROM checksum by reading/adding each word of the EEPROM
2110  *  and then verifies that the sum of the EEPROM is equal to 0xBABA.
2111  **/
2112 static s32 igb_validate_nvm_checksum_with_offset(struct e1000_hw *hw,
2113                                                  u16 offset)
2114 {
2115         s32 ret_val = 0;
2116         u16 checksum = 0;
2117         u16 i, nvm_data;
2118
2119         for (i = offset; i < ((NVM_CHECKSUM_REG + offset) + 1); i++) {
2120                 ret_val = hw->nvm.ops.read(hw, i, 1, &nvm_data);
2121                 if (ret_val) {
2122                         hw_dbg("NVM Read Error\n");
2123                         goto out;
2124                 }
2125                 checksum += nvm_data;
2126         }
2127
2128         if (checksum != (u16) NVM_SUM) {
2129                 hw_dbg("NVM Checksum Invalid\n");
2130                 ret_val = -E1000_ERR_NVM;
2131                 goto out;
2132         }
2133
2134 out:
2135         return ret_val;
2136 }
2137
2138 /**
2139  *  igb_update_nvm_checksum_with_offset - Update EEPROM
2140  *  checksum
2141  *  @hw: pointer to the HW structure
2142  *  @offset: offset in words of the checksum protected region
2143  *
2144  *  Updates the EEPROM checksum by reading/adding each word of the EEPROM
2145  *  up to the checksum.  Then calculates the EEPROM checksum and writes the
2146  *  value to the EEPROM.
2147  **/
2148 static s32 igb_update_nvm_checksum_with_offset(struct e1000_hw *hw, u16 offset)
2149 {
2150         s32 ret_val;
2151         u16 checksum = 0;
2152         u16 i, nvm_data;
2153
2154         for (i = offset; i < (NVM_CHECKSUM_REG + offset); i++) {
2155                 ret_val = hw->nvm.ops.read(hw, i, 1, &nvm_data);
2156                 if (ret_val) {
2157                         hw_dbg("NVM Read Error while updating checksum.\n");
2158                         goto out;
2159                 }
2160                 checksum += nvm_data;
2161         }
2162         checksum = (u16) NVM_SUM - checksum;
2163         ret_val = hw->nvm.ops.write(hw, (NVM_CHECKSUM_REG + offset), 1,
2164                                 &checksum);
2165         if (ret_val)
2166                 hw_dbg("NVM Write Error while updating checksum.\n");
2167
2168 out:
2169         return ret_val;
2170 }
2171
2172 /**
2173  *  igb_validate_nvm_checksum_82580 - Validate EEPROM checksum
2174  *  @hw: pointer to the HW structure
2175  *
2176  *  Calculates the EEPROM section checksum by reading/adding each word of
2177  *  the EEPROM and then verifies that the sum of the EEPROM is
2178  *  equal to 0xBABA.
2179  **/
2180 static s32 igb_validate_nvm_checksum_82580(struct e1000_hw *hw)
2181 {
2182         s32 ret_val = 0;
2183         u16 eeprom_regions_count = 1;
2184         u16 j, nvm_data;
2185         u16 nvm_offset;
2186
2187         ret_val = hw->nvm.ops.read(hw, NVM_COMPATIBILITY_REG_3, 1, &nvm_data);
2188         if (ret_val) {
2189                 hw_dbg("NVM Read Error\n");
2190                 goto out;
2191         }
2192
2193         if (nvm_data & NVM_COMPATIBILITY_BIT_MASK) {
2194                 /* if checksums compatibility bit is set validate checksums
2195                  * for all 4 ports. */
2196                 eeprom_regions_count = 4;
2197         }
2198
2199         for (j = 0; j < eeprom_regions_count; j++) {
2200                 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j);
2201                 ret_val = igb_validate_nvm_checksum_with_offset(hw,
2202                                                                 nvm_offset);
2203                 if (ret_val != 0)
2204                         goto out;
2205         }
2206
2207 out:
2208         return ret_val;
2209 }
2210
2211 /**
2212  *  igb_update_nvm_checksum_82580 - Update EEPROM checksum
2213  *  @hw: pointer to the HW structure
2214  *
2215  *  Updates the EEPROM section checksums for all 4 ports by reading/adding
2216  *  each word of the EEPROM up to the checksum.  Then calculates the EEPROM
2217  *  checksum and writes the value to the EEPROM.
2218  **/
2219 static s32 igb_update_nvm_checksum_82580(struct e1000_hw *hw)
2220 {
2221         s32 ret_val;
2222         u16 j, nvm_data;
2223         u16 nvm_offset;
2224
2225         ret_val = hw->nvm.ops.read(hw, NVM_COMPATIBILITY_REG_3, 1, &nvm_data);
2226         if (ret_val) {
2227                 hw_dbg("NVM Read Error while updating checksum"
2228                         " compatibility bit.\n");
2229                 goto out;
2230         }
2231
2232         if ((nvm_data & NVM_COMPATIBILITY_BIT_MASK) == 0) {
2233                 /* set compatibility bit to validate checksums appropriately */
2234                 nvm_data = nvm_data | NVM_COMPATIBILITY_BIT_MASK;
2235                 ret_val = hw->nvm.ops.write(hw, NVM_COMPATIBILITY_REG_3, 1,
2236                                         &nvm_data);
2237                 if (ret_val) {
2238                         hw_dbg("NVM Write Error while updating checksum"
2239                                 " compatibility bit.\n");
2240                         goto out;
2241                 }
2242         }
2243
2244         for (j = 0; j < 4; j++) {
2245                 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j);
2246                 ret_val = igb_update_nvm_checksum_with_offset(hw, nvm_offset);
2247                 if (ret_val)
2248                         goto out;
2249         }
2250
2251 out:
2252         return ret_val;
2253 }
2254
2255 /**
2256  *  igb_validate_nvm_checksum_i350 - Validate EEPROM checksum
2257  *  @hw: pointer to the HW structure
2258  *
2259  *  Calculates the EEPROM section checksum by reading/adding each word of
2260  *  the EEPROM and then verifies that the sum of the EEPROM is
2261  *  equal to 0xBABA.
2262  **/
2263 static s32 igb_validate_nvm_checksum_i350(struct e1000_hw *hw)
2264 {
2265         s32 ret_val = 0;
2266         u16 j;
2267         u16 nvm_offset;
2268
2269         for (j = 0; j < 4; j++) {
2270                 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j);
2271                 ret_val = igb_validate_nvm_checksum_with_offset(hw,
2272                                                                 nvm_offset);
2273                 if (ret_val != 0)
2274                         goto out;
2275         }
2276
2277 out:
2278         return ret_val;
2279 }
2280
2281 /**
2282  *  igb_update_nvm_checksum_i350 - Update EEPROM checksum
2283  *  @hw: pointer to the HW structure
2284  *
2285  *  Updates the EEPROM section checksums for all 4 ports by reading/adding
2286  *  each word of the EEPROM up to the checksum.  Then calculates the EEPROM
2287  *  checksum and writes the value to the EEPROM.
2288  **/
2289 static s32 igb_update_nvm_checksum_i350(struct e1000_hw *hw)
2290 {
2291         s32 ret_val = 0;
2292         u16 j;
2293         u16 nvm_offset;
2294
2295         for (j = 0; j < 4; j++) {
2296                 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j);
2297                 ret_val = igb_update_nvm_checksum_with_offset(hw, nvm_offset);
2298                 if (ret_val != 0)
2299                         goto out;
2300         }
2301
2302 out:
2303         return ret_val;
2304 }
2305
2306 /**
2307  *  igb_set_eee_i350 - Enable/disable EEE support
2308  *  @hw: pointer to the HW structure
2309  *
2310  *  Enable/disable EEE based on setting in dev_spec structure.
2311  *
2312  **/
2313 s32 igb_set_eee_i350(struct e1000_hw *hw)
2314 {
2315         s32 ret_val = 0;
2316         u32 ipcnfg, eeer;
2317
2318         if ((hw->mac.type < e1000_i350) ||
2319             (hw->phy.media_type != e1000_media_type_copper))
2320                 goto out;
2321         ipcnfg = rd32(E1000_IPCNFG);
2322         eeer = rd32(E1000_EEER);
2323
2324         /* enable or disable per user setting */
2325         if (!(hw->dev_spec._82575.eee_disable)) {
2326                 u32 eee_su = rd32(E1000_EEE_SU);
2327
2328                 ipcnfg |= (E1000_IPCNFG_EEE_1G_AN | E1000_IPCNFG_EEE_100M_AN);
2329                 eeer |= (E1000_EEER_TX_LPI_EN | E1000_EEER_RX_LPI_EN |
2330                         E1000_EEER_LPI_FC);
2331
2332                 /* This bit should not be set in normal operation. */
2333                 if (eee_su & E1000_EEE_SU_LPI_CLK_STP)
2334                         hw_dbg("LPI Clock Stop Bit should not be set!\n");
2335
2336
2337         } else {
2338                 ipcnfg &= ~(E1000_IPCNFG_EEE_1G_AN |
2339                         E1000_IPCNFG_EEE_100M_AN);
2340                 eeer &= ~(E1000_EEER_TX_LPI_EN |
2341                         E1000_EEER_RX_LPI_EN |
2342                         E1000_EEER_LPI_FC);
2343         }
2344         wr32(E1000_IPCNFG, ipcnfg);
2345         wr32(E1000_EEER, eeer);
2346         rd32(E1000_IPCNFG);
2347         rd32(E1000_EEER);
2348 out:
2349
2350         return ret_val;
2351 }
2352
2353 static const u8 e1000_emc_temp_data[4] = {
2354         E1000_EMC_INTERNAL_DATA,
2355         E1000_EMC_DIODE1_DATA,
2356         E1000_EMC_DIODE2_DATA,
2357         E1000_EMC_DIODE3_DATA
2358 };
2359 static const u8 e1000_emc_therm_limit[4] = {
2360         E1000_EMC_INTERNAL_THERM_LIMIT,
2361         E1000_EMC_DIODE1_THERM_LIMIT,
2362         E1000_EMC_DIODE2_THERM_LIMIT,
2363         E1000_EMC_DIODE3_THERM_LIMIT
2364 };
2365
2366 /* igb_get_thermal_sensor_data_generic - Gathers thermal sensor data
2367  *  @hw: pointer to hardware structure
2368  *
2369  *  Updates the temperatures in mac.thermal_sensor_data
2370  */
2371 s32 igb_get_thermal_sensor_data_generic(struct e1000_hw *hw)
2372 {
2373         s32 status = E1000_SUCCESS;
2374         u16 ets_offset;
2375         u16 ets_cfg;
2376         u16 ets_sensor;
2377         u8  num_sensors;
2378         u8  sensor_index;
2379         u8  sensor_location;
2380         u8  i;
2381         struct e1000_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
2382
2383         if ((hw->mac.type != e1000_i350) || (hw->bus.func != 0))
2384                 return E1000_NOT_IMPLEMENTED;
2385
2386         data->sensor[0].temp = (rd32(E1000_THMJT) & 0xFF);
2387
2388         /* Return the internal sensor only if ETS is unsupported */
2389         hw->nvm.ops.read(hw, NVM_ETS_CFG, 1, &ets_offset);
2390         if ((ets_offset == 0x0000) || (ets_offset == 0xFFFF))
2391                 return status;
2392
2393         hw->nvm.ops.read(hw, ets_offset, 1, &ets_cfg);
2394         if (((ets_cfg & NVM_ETS_TYPE_MASK) >> NVM_ETS_TYPE_SHIFT)
2395             != NVM_ETS_TYPE_EMC)
2396                 return E1000_NOT_IMPLEMENTED;
2397
2398         num_sensors = (ets_cfg & NVM_ETS_NUM_SENSORS_MASK);
2399         if (num_sensors > E1000_MAX_SENSORS)
2400                 num_sensors = E1000_MAX_SENSORS;
2401
2402         for (i = 1; i < num_sensors; i++) {
2403                 hw->nvm.ops.read(hw, (ets_offset + i), 1, &ets_sensor);
2404                 sensor_index = ((ets_sensor & NVM_ETS_DATA_INDEX_MASK) >>
2405                                 NVM_ETS_DATA_INDEX_SHIFT);
2406                 sensor_location = ((ets_sensor & NVM_ETS_DATA_LOC_MASK) >>
2407                                    NVM_ETS_DATA_LOC_SHIFT);
2408
2409                 if (sensor_location != 0)
2410                         hw->phy.ops.read_i2c_byte(hw,
2411                                         e1000_emc_temp_data[sensor_index],
2412                                         E1000_I2C_THERMAL_SENSOR_ADDR,
2413                                         &data->sensor[i].temp);
2414         }
2415         return status;
2416 }
2417
2418 /* igb_init_thermal_sensor_thresh_generic - Sets thermal sensor thresholds
2419  *  @hw: pointer to hardware structure
2420  *
2421  *  Sets the thermal sensor thresholds according to the NVM map
2422  *  and save off the threshold and location values into mac.thermal_sensor_data
2423  */
2424 s32 igb_init_thermal_sensor_thresh_generic(struct e1000_hw *hw)
2425 {
2426         s32 status = E1000_SUCCESS;
2427         u16 ets_offset;
2428         u16 ets_cfg;
2429         u16 ets_sensor;
2430         u8  low_thresh_delta;
2431         u8  num_sensors;
2432         u8  sensor_index;
2433         u8  sensor_location;
2434         u8  therm_limit;
2435         u8  i;
2436         struct e1000_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
2437
2438         if ((hw->mac.type != e1000_i350) || (hw->bus.func != 0))
2439                 return E1000_NOT_IMPLEMENTED;
2440
2441         memset(data, 0, sizeof(struct e1000_thermal_sensor_data));
2442
2443         data->sensor[0].location = 0x1;
2444         data->sensor[0].caution_thresh =
2445                 (rd32(E1000_THHIGHTC) & 0xFF);
2446         data->sensor[0].max_op_thresh =
2447                 (rd32(E1000_THLOWTC) & 0xFF);
2448
2449         /* Return the internal sensor only if ETS is unsupported */
2450         hw->nvm.ops.read(hw, NVM_ETS_CFG, 1, &ets_offset);
2451         if ((ets_offset == 0x0000) || (ets_offset == 0xFFFF))
2452                 return status;
2453
2454         hw->nvm.ops.read(hw, ets_offset, 1, &ets_cfg);
2455         if (((ets_cfg & NVM_ETS_TYPE_MASK) >> NVM_ETS_TYPE_SHIFT)
2456             != NVM_ETS_TYPE_EMC)
2457                 return E1000_NOT_IMPLEMENTED;
2458
2459         low_thresh_delta = ((ets_cfg & NVM_ETS_LTHRES_DELTA_MASK) >>
2460                             NVM_ETS_LTHRES_DELTA_SHIFT);
2461         num_sensors = (ets_cfg & NVM_ETS_NUM_SENSORS_MASK);
2462
2463         for (i = 1; i <= num_sensors; i++) {
2464                 hw->nvm.ops.read(hw, (ets_offset + i), 1, &ets_sensor);
2465                 sensor_index = ((ets_sensor & NVM_ETS_DATA_INDEX_MASK) >>
2466                                 NVM_ETS_DATA_INDEX_SHIFT);
2467                 sensor_location = ((ets_sensor & NVM_ETS_DATA_LOC_MASK) >>
2468                                    NVM_ETS_DATA_LOC_SHIFT);
2469                 therm_limit = ets_sensor & NVM_ETS_DATA_HTHRESH_MASK;
2470
2471                 hw->phy.ops.write_i2c_byte(hw,
2472                         e1000_emc_therm_limit[sensor_index],
2473                         E1000_I2C_THERMAL_SENSOR_ADDR,
2474                         therm_limit);
2475
2476                 if ((i < E1000_MAX_SENSORS) && (sensor_location != 0)) {
2477                         data->sensor[i].location = sensor_location;
2478                         data->sensor[i].caution_thresh = therm_limit;
2479                         data->sensor[i].max_op_thresh = therm_limit -
2480                                                         low_thresh_delta;
2481                 }
2482         }
2483         return status;
2484 }
2485
2486 static struct e1000_mac_operations e1000_mac_ops_82575 = {
2487         .init_hw              = igb_init_hw_82575,
2488         .check_for_link       = igb_check_for_link_82575,
2489         .rar_set              = igb_rar_set,
2490         .read_mac_addr        = igb_read_mac_addr_82575,
2491         .get_speed_and_duplex = igb_get_speed_and_duplex_copper,
2492 #ifdef CONFIG_IGB_HWMON
2493         .get_thermal_sensor_data = igb_get_thermal_sensor_data_generic,
2494         .init_thermal_sensor_thresh = igb_init_thermal_sensor_thresh_generic,
2495 #endif
2496 };
2497
2498 static struct e1000_phy_operations e1000_phy_ops_82575 = {
2499         .acquire              = igb_acquire_phy_82575,
2500         .get_cfg_done         = igb_get_cfg_done_82575,
2501         .release              = igb_release_phy_82575,
2502         .write_i2c_byte       = igb_write_i2c_byte,
2503         .read_i2c_byte        = igb_read_i2c_byte,
2504 };
2505
2506 static struct e1000_nvm_operations e1000_nvm_ops_82575 = {
2507         .acquire              = igb_acquire_nvm_82575,
2508         .read                 = igb_read_nvm_eerd,
2509         .release              = igb_release_nvm_82575,
2510         .write                = igb_write_nvm_spi,
2511 };
2512
2513 const struct e1000_info e1000_82575_info = {
2514         .get_invariants = igb_get_invariants_82575,
2515         .mac_ops = &e1000_mac_ops_82575,
2516         .phy_ops = &e1000_phy_ops_82575,
2517         .nvm_ops = &e1000_nvm_ops_82575,
2518 };
2519