1/* Intel(R) Gigabit Ethernet Linux driver 2 * Copyright(c) 2007-2014 Intel Corporation. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms and conditions of the GNU General Public License, 6 * version 2, as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 11 * more details. 12 * 13 * You should have received a copy of the GNU General Public License along with 14 * this program; if not, see <http://www.gnu.org/licenses/>. 15 * 16 * The full GNU General Public License is included in this distribution in 17 * the file called "COPYING". 18 * 19 * Contact Information: 20 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 21 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 22 */ 23 24/* e1000_82575 25 * e1000_82576 26 */ 27 28#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 29 30#include <linux/types.h> 31#include <linux/if_ether.h> 32#include <linux/i2c.h> 33 34#include "e1000_mac.h" 35#include "e1000_82575.h" 36#include "e1000_i210.h" 37 38static s32 igb_get_invariants_82575(struct e1000_hw *); 39static s32 igb_acquire_phy_82575(struct e1000_hw *); 40static void igb_release_phy_82575(struct e1000_hw *); 41static s32 igb_acquire_nvm_82575(struct e1000_hw *); 42static void igb_release_nvm_82575(struct e1000_hw *); 43static s32 igb_check_for_link_82575(struct e1000_hw *); 44static s32 igb_get_cfg_done_82575(struct e1000_hw *); 45static s32 igb_init_hw_82575(struct e1000_hw *); 46static s32 igb_phy_hw_reset_sgmii_82575(struct e1000_hw *); 47static s32 igb_read_phy_reg_sgmii_82575(struct e1000_hw *, u32, u16 *); 48static s32 igb_read_phy_reg_82580(struct e1000_hw *, u32, u16 *); 49static s32 igb_write_phy_reg_82580(struct e1000_hw *, u32, u16); 50static s32 igb_reset_hw_82575(struct e1000_hw *); 51static s32 igb_reset_hw_82580(struct e1000_hw *); 52static s32 igb_set_d0_lplu_state_82575(struct e1000_hw *, bool); 53static s32 igb_set_d0_lplu_state_82580(struct e1000_hw *, bool); 54static s32 igb_set_d3_lplu_state_82580(struct e1000_hw *, bool); 55static s32 igb_setup_copper_link_82575(struct e1000_hw *); 56static s32 igb_setup_serdes_link_82575(struct e1000_hw *); 57static s32 igb_write_phy_reg_sgmii_82575(struct e1000_hw *, u32, u16); 58static void igb_clear_hw_cntrs_82575(struct e1000_hw *); 59static s32 igb_acquire_swfw_sync_82575(struct e1000_hw *, u16); 60static s32 igb_get_pcs_speed_and_duplex_82575(struct e1000_hw *, u16 *, 61 u16 *); 62static s32 igb_get_phy_id_82575(struct e1000_hw *); 63static void igb_release_swfw_sync_82575(struct e1000_hw *, u16); 64static bool igb_sgmii_active_82575(struct e1000_hw *); 65static s32 igb_reset_init_script_82575(struct e1000_hw *); 66static s32 igb_read_mac_addr_82575(struct e1000_hw *); 67static s32 igb_set_pcie_completion_timeout(struct e1000_hw *hw); 68static s32 igb_reset_mdicnfg_82580(struct e1000_hw *hw); 69static s32 igb_validate_nvm_checksum_82580(struct e1000_hw *hw); 70static s32 igb_update_nvm_checksum_82580(struct e1000_hw *hw); 71static s32 igb_validate_nvm_checksum_i350(struct e1000_hw *hw); 72static s32 igb_update_nvm_checksum_i350(struct e1000_hw *hw); 73static const u16 e1000_82580_rxpbs_table[] = { 74 36, 72, 144, 1, 2, 4, 8, 16, 35, 70, 140 }; 75 76/** 77 * igb_sgmii_uses_mdio_82575 - Determine if I2C pins are for external MDIO 78 * @hw: pointer to the HW structure 79 * 80 * Called to determine if the I2C pins are being used for I2C or as an 81 * external MDIO interface since the two options are mutually exclusive. 82 **/ 83static bool igb_sgmii_uses_mdio_82575(struct e1000_hw *hw) 84{ 85 u32 reg = 0; 86 bool ext_mdio = false; 87 88 switch (hw->mac.type) { 89 case e1000_82575: 90 case e1000_82576: 91 reg = rd32(E1000_MDIC); 92 ext_mdio = !!(reg & E1000_MDIC_DEST); 93 break; 94 case e1000_82580: 95 case e1000_i350: 96 case e1000_i354: 97 case e1000_i210: 98 case e1000_i211: 99 reg = rd32(E1000_MDICNFG); 100 ext_mdio = !!(reg & E1000_MDICNFG_EXT_MDIO); 101 break; 102 default: 103 break; 104 } 105 return ext_mdio; 106} 107 108/** 109 * igb_check_for_link_media_swap - Check which M88E1112 interface linked 110 * @hw: pointer to the HW structure 111 * 112 * Poll the M88E1112 interfaces to see which interface achieved link. 113 */ 114static s32 igb_check_for_link_media_swap(struct e1000_hw *hw) 115{ 116 struct e1000_phy_info *phy = &hw->phy; 117 s32 ret_val; 118 u16 data; 119 u8 port = 0; 120 121 /* Check the copper medium. */ 122 ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 0); 123 if (ret_val) 124 return ret_val; 125 126 ret_val = phy->ops.read_reg(hw, E1000_M88E1112_STATUS, &data); 127 if (ret_val) 128 return ret_val; 129 130 if (data & E1000_M88E1112_STATUS_LINK) 131 port = E1000_MEDIA_PORT_COPPER; 132 133 /* Check the other medium. */ 134 ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 1); 135 if (ret_val) 136 return ret_val; 137 138 ret_val = phy->ops.read_reg(hw, E1000_M88E1112_STATUS, &data); 139 if (ret_val) 140 return ret_val; 141 142 /* reset page to 0 */ 143 ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 0); 144 if (ret_val) 145 return ret_val; 146 147 if (data & E1000_M88E1112_STATUS_LINK) 148 port = E1000_MEDIA_PORT_OTHER; 149 150 /* Determine if a swap needs to happen. */ 151 if (port && (hw->dev_spec._82575.media_port != port)) { 152 hw->dev_spec._82575.media_port = port; 153 hw->dev_spec._82575.media_changed = true; 154 } else { 155 ret_val = igb_check_for_link_82575(hw); 156 } 157 158 return 0; 159} 160 161/** 162 * igb_init_phy_params_82575 - Init PHY func ptrs. 163 * @hw: pointer to the HW structure 164 **/ 165static s32 igb_init_phy_params_82575(struct e1000_hw *hw) 166{ 167 struct e1000_phy_info *phy = &hw->phy; 168 s32 ret_val = 0; 169 u32 ctrl_ext; 170 171 if (hw->phy.media_type != e1000_media_type_copper) { 172 phy->type = e1000_phy_none; 173 goto out; 174 } 175 176 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT; 177 phy->reset_delay_us = 100; 178 179 ctrl_ext = rd32(E1000_CTRL_EXT); 180 181 if (igb_sgmii_active_82575(hw)) { 182 phy->ops.reset = igb_phy_hw_reset_sgmii_82575; 183 ctrl_ext |= E1000_CTRL_I2C_ENA; 184 } else { 185 phy->ops.reset = igb_phy_hw_reset; 186 ctrl_ext &= ~E1000_CTRL_I2C_ENA; 187 } 188 189 wr32(E1000_CTRL_EXT, ctrl_ext); 190 igb_reset_mdicnfg_82580(hw); 191 192 if (igb_sgmii_active_82575(hw) && !igb_sgmii_uses_mdio_82575(hw)) { 193 phy->ops.read_reg = igb_read_phy_reg_sgmii_82575; 194 phy->ops.write_reg = igb_write_phy_reg_sgmii_82575; 195 } else { 196 switch (hw->mac.type) { 197 case e1000_82580: 198 case e1000_i350: 199 case e1000_i354: 200 phy->ops.read_reg = igb_read_phy_reg_82580; 201 phy->ops.write_reg = igb_write_phy_reg_82580; 202 break; 203 case e1000_i210: 204 case e1000_i211: 205 phy->ops.read_reg = igb_read_phy_reg_gs40g; 206 phy->ops.write_reg = igb_write_phy_reg_gs40g; 207 break; 208 default: 209 phy->ops.read_reg = igb_read_phy_reg_igp; 210 phy->ops.write_reg = igb_write_phy_reg_igp; 211 } 212 } 213 214 /* set lan id */ 215 hw->bus.func = (rd32(E1000_STATUS) & E1000_STATUS_FUNC_MASK) >> 216 E1000_STATUS_FUNC_SHIFT; 217 218 /* Set phy->phy_addr and phy->id. */ 219 ret_val = igb_get_phy_id_82575(hw); 220 if (ret_val) 221 return ret_val; 222 223 /* Verify phy id and set remaining function pointers */ 224 switch (phy->id) { 225 case M88E1543_E_PHY_ID: 226 case I347AT4_E_PHY_ID: 227 case M88E1112_E_PHY_ID: 228 case M88E1111_I_PHY_ID: 229 phy->type = e1000_phy_m88; 230 phy->ops.check_polarity = igb_check_polarity_m88; 231 phy->ops.get_phy_info = igb_get_phy_info_m88; 232 if (phy->id != M88E1111_I_PHY_ID) 233 phy->ops.get_cable_length = 234 igb_get_cable_length_m88_gen2; 235 else 236 phy->ops.get_cable_length = igb_get_cable_length_m88; 237 phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_m88; 238 /* Check if this PHY is confgured for media swap. */ 239 if (phy->id == M88E1112_E_PHY_ID) { 240 u16 data; 241 242 ret_val = phy->ops.write_reg(hw, 243 E1000_M88E1112_PAGE_ADDR, 244 2); 245 if (ret_val) 246 goto out; 247 248 ret_val = phy->ops.read_reg(hw, 249 E1000_M88E1112_MAC_CTRL_1, 250 &data); 251 if (ret_val) 252 goto out; 253 254 data = (data & E1000_M88E1112_MAC_CTRL_1_MODE_MASK) >> 255 E1000_M88E1112_MAC_CTRL_1_MODE_SHIFT; 256 if (data == E1000_M88E1112_AUTO_COPPER_SGMII || 257 data == E1000_M88E1112_AUTO_COPPER_BASEX) 258 hw->mac.ops.check_for_link = 259 igb_check_for_link_media_swap; 260 } 261 break; 262 case IGP03E1000_E_PHY_ID: 263 phy->type = e1000_phy_igp_3; 264 phy->ops.get_phy_info = igb_get_phy_info_igp; 265 phy->ops.get_cable_length = igb_get_cable_length_igp_2; 266 phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_igp; 267 phy->ops.set_d0_lplu_state = igb_set_d0_lplu_state_82575; 268 phy->ops.set_d3_lplu_state = igb_set_d3_lplu_state; 269 break; 270 case I82580_I_PHY_ID: 271 case I350_I_PHY_ID: 272 phy->type = e1000_phy_82580; 273 phy->ops.force_speed_duplex = 274 igb_phy_force_speed_duplex_82580; 275 phy->ops.get_cable_length = igb_get_cable_length_82580; 276 phy->ops.get_phy_info = igb_get_phy_info_82580; 277 phy->ops.set_d0_lplu_state = igb_set_d0_lplu_state_82580; 278 phy->ops.set_d3_lplu_state = igb_set_d3_lplu_state_82580; 279 break; 280 case I210_I_PHY_ID: 281 phy->type = e1000_phy_i210; 282 phy->ops.check_polarity = igb_check_polarity_m88; 283 phy->ops.get_phy_info = igb_get_phy_info_m88; 284 phy->ops.get_cable_length = igb_get_cable_length_m88_gen2; 285 phy->ops.set_d0_lplu_state = igb_set_d0_lplu_state_82580; 286 phy->ops.set_d3_lplu_state = igb_set_d3_lplu_state_82580; 287 phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_m88; 288 break; 289 default: 290 ret_val = -E1000_ERR_PHY; 291 goto out; 292 } 293 294out: 295 return ret_val; 296} 297 298/** 299 * igb_init_nvm_params_82575 - Init NVM func ptrs. 300 * @hw: pointer to the HW structure 301 **/ 302static s32 igb_init_nvm_params_82575(struct e1000_hw *hw) 303{ 304 struct e1000_nvm_info *nvm = &hw->nvm; 305 u32 eecd = rd32(E1000_EECD); 306 u16 size; 307 308 size = (u16)((eecd & E1000_EECD_SIZE_EX_MASK) >> 309 E1000_EECD_SIZE_EX_SHIFT); 310 311 /* Added to a constant, "size" becomes the left-shift value 312 * for setting word_size. 313 */ 314 size += NVM_WORD_SIZE_BASE_SHIFT; 315 316 /* Just in case size is out of range, cap it to the largest 317 * EEPROM size supported 318 */ 319 if (size > 15) 320 size = 15; 321 322 nvm->word_size = 1 << size; 323 nvm->opcode_bits = 8; 324 nvm->delay_usec = 1; 325 326 switch (nvm->override) { 327 case e1000_nvm_override_spi_large: 328 nvm->page_size = 32; 329 nvm->address_bits = 16; 330 break; 331 case e1000_nvm_override_spi_small: 332 nvm->page_size = 8; 333 nvm->address_bits = 8; 334 break; 335 default: 336 nvm->page_size = eecd & E1000_EECD_ADDR_BITS ? 32 : 8; 337 nvm->address_bits = eecd & E1000_EECD_ADDR_BITS ? 338 16 : 8; 339 break; 340 } 341 if (nvm->word_size == (1 << 15)) 342 nvm->page_size = 128; 343 344 nvm->type = e1000_nvm_eeprom_spi; 345 346 /* NVM Function Pointers */ 347 nvm->ops.acquire = igb_acquire_nvm_82575; 348 nvm->ops.release = igb_release_nvm_82575; 349 nvm->ops.write = igb_write_nvm_spi; 350 nvm->ops.validate = igb_validate_nvm_checksum; 351 nvm->ops.update = igb_update_nvm_checksum; 352 if (nvm->word_size < (1 << 15)) 353 nvm->ops.read = igb_read_nvm_eerd; 354 else 355 nvm->ops.read = igb_read_nvm_spi; 356 357 /* override generic family function pointers for specific descendants */ 358 switch (hw->mac.type) { 359 case e1000_82580: 360 nvm->ops.validate = igb_validate_nvm_checksum_82580; 361 nvm->ops.update = igb_update_nvm_checksum_82580; 362 break; 363 case e1000_i354: 364 case e1000_i350: 365 nvm->ops.validate = igb_validate_nvm_checksum_i350; 366 nvm->ops.update = igb_update_nvm_checksum_i350; 367 break; 368 default: 369 break; 370 } 371 372 return 0; 373} 374 375/** 376 * igb_init_mac_params_82575 - Init MAC func ptrs. 377 * @hw: pointer to the HW structure 378 **/ 379static s32 igb_init_mac_params_82575(struct e1000_hw *hw) 380{ 381 struct e1000_mac_info *mac = &hw->mac; 382 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575; 383 384 /* Set mta register count */ 385 mac->mta_reg_count = 128; 386 /* Set rar entry count */ 387 switch (mac->type) { 388 case e1000_82576: 389 mac->rar_entry_count = E1000_RAR_ENTRIES_82576; 390 break; 391 case e1000_82580: 392 mac->rar_entry_count = E1000_RAR_ENTRIES_82580; 393 break; 394 case e1000_i350: 395 case e1000_i354: 396 mac->rar_entry_count = E1000_RAR_ENTRIES_I350; 397 break; 398 default: 399 mac->rar_entry_count = E1000_RAR_ENTRIES_82575; 400 break; 401 } 402 /* reset */ 403 if (mac->type >= e1000_82580) 404 mac->ops.reset_hw = igb_reset_hw_82580; 405 else 406 mac->ops.reset_hw = igb_reset_hw_82575; 407 408 if (mac->type >= e1000_i210) { 409 mac->ops.acquire_swfw_sync = igb_acquire_swfw_sync_i210; 410 mac->ops.release_swfw_sync = igb_release_swfw_sync_i210; 411 412 } else { 413 mac->ops.acquire_swfw_sync = igb_acquire_swfw_sync_82575; 414 mac->ops.release_swfw_sync = igb_release_swfw_sync_82575; 415 } 416 417 /* Set if part includes ASF firmware */ 418 mac->asf_firmware_present = true; 419 /* Set if manageability features are enabled. */ 420 mac->arc_subsystem_valid = 421 (rd32(E1000_FWSM) & E1000_FWSM_MODE_MASK) 422 ? true : false; 423 /* enable EEE on i350 parts and later parts */ 424 if (mac->type >= e1000_i350) 425 dev_spec->eee_disable = false; 426 else 427 dev_spec->eee_disable = true; 428 /* Allow a single clear of the SW semaphore on I210 and newer */ 429 if (mac->type >= e1000_i210) 430 dev_spec->clear_semaphore_once = true; 431 /* physical interface link setup */ 432 mac->ops.setup_physical_interface = 433 (hw->phy.media_type == e1000_media_type_copper) 434 ? igb_setup_copper_link_82575 435 : igb_setup_serdes_link_82575; 436 437 if (mac->type == e1000_82580) { 438 switch (hw->device_id) { 439 /* feature not supported on these id's */ 440 case E1000_DEV_ID_DH89XXCC_SGMII: 441 case E1000_DEV_ID_DH89XXCC_SERDES: 442 case E1000_DEV_ID_DH89XXCC_BACKPLANE: 443 case E1000_DEV_ID_DH89XXCC_SFP: 444 break; 445 default: 446 hw->dev_spec._82575.mas_capable = true; 447 break; 448 } 449 } 450 return 0; 451} 452 453/** 454 * igb_set_sfp_media_type_82575 - derives SFP module media type. 455 * @hw: pointer to the HW structure 456 * 457 * The media type is chosen based on SFP module. 458 * compatibility flags retrieved from SFP ID EEPROM. 459 **/ 460static s32 igb_set_sfp_media_type_82575(struct e1000_hw *hw) 461{ 462 s32 ret_val = E1000_ERR_CONFIG; 463 u32 ctrl_ext = 0; 464 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575; 465 struct e1000_sfp_flags *eth_flags = &dev_spec->eth_flags; 466 u8 tranceiver_type = 0; 467 s32 timeout = 3; 468 469 /* Turn I2C interface ON and power on sfp cage */ 470 ctrl_ext = rd32(E1000_CTRL_EXT); 471 ctrl_ext &= ~E1000_CTRL_EXT_SDP3_DATA; 472 wr32(E1000_CTRL_EXT, ctrl_ext | E1000_CTRL_I2C_ENA); 473 474 wrfl(); 475 476 /* Read SFP module data */ 477 while (timeout) { 478 ret_val = igb_read_sfp_data_byte(hw, 479 E1000_I2CCMD_SFP_DATA_ADDR(E1000_SFF_IDENTIFIER_OFFSET), 480 &tranceiver_type); 481 if (ret_val == 0) 482 break; 483 msleep(100); 484 timeout--; 485 } 486 if (ret_val != 0) 487 goto out; 488 489 ret_val = igb_read_sfp_data_byte(hw, 490 E1000_I2CCMD_SFP_DATA_ADDR(E1000_SFF_ETH_FLAGS_OFFSET), 491 (u8 *)eth_flags); 492 if (ret_val != 0) 493 goto out; 494 495 /* Check if there is some SFP module plugged and powered */ 496 if ((tranceiver_type == E1000_SFF_IDENTIFIER_SFP) || 497 (tranceiver_type == E1000_SFF_IDENTIFIER_SFF)) { 498 dev_spec->module_plugged = true; 499 if (eth_flags->e1000_base_lx || eth_flags->e1000_base_sx) { 500 hw->phy.media_type = e1000_media_type_internal_serdes; 501 } else if (eth_flags->e100_base_fx) { 502 dev_spec->sgmii_active = true; 503 hw->phy.media_type = e1000_media_type_internal_serdes; 504 } else if (eth_flags->e1000_base_t) { 505 dev_spec->sgmii_active = true; 506 hw->phy.media_type = e1000_media_type_copper; 507 } else { 508 hw->phy.media_type = e1000_media_type_unknown; 509 hw_dbg("PHY module has not been recognized\n"); 510 goto out; 511 } 512 } else { 513 hw->phy.media_type = e1000_media_type_unknown; 514 } 515 ret_val = 0; 516out: 517 /* Restore I2C interface setting */ 518 wr32(E1000_CTRL_EXT, ctrl_ext); 519 return ret_val; 520} 521 522static s32 igb_get_invariants_82575(struct e1000_hw *hw) 523{ 524 struct e1000_mac_info *mac = &hw->mac; 525 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575; 526 s32 ret_val; 527 u32 ctrl_ext = 0; 528 u32 link_mode = 0; 529 530 switch (hw->device_id) { 531 case E1000_DEV_ID_82575EB_COPPER: 532 case E1000_DEV_ID_82575EB_FIBER_SERDES: 533 case E1000_DEV_ID_82575GB_QUAD_COPPER: 534 mac->type = e1000_82575; 535 break; 536 case E1000_DEV_ID_82576: 537 case E1000_DEV_ID_82576_NS: 538 case E1000_DEV_ID_82576_NS_SERDES: 539 case E1000_DEV_ID_82576_FIBER: 540 case E1000_DEV_ID_82576_SERDES: 541 case E1000_DEV_ID_82576_QUAD_COPPER: 542 case E1000_DEV_ID_82576_QUAD_COPPER_ET2: 543 case E1000_DEV_ID_82576_SERDES_QUAD: 544 mac->type = e1000_82576; 545 break; 546 case E1000_DEV_ID_82580_COPPER: 547 case E1000_DEV_ID_82580_FIBER: 548 case E1000_DEV_ID_82580_QUAD_FIBER: 549 case E1000_DEV_ID_82580_SERDES: 550 case E1000_DEV_ID_82580_SGMII: 551 case E1000_DEV_ID_82580_COPPER_DUAL: 552 case E1000_DEV_ID_DH89XXCC_SGMII: 553 case E1000_DEV_ID_DH89XXCC_SERDES: 554 case E1000_DEV_ID_DH89XXCC_BACKPLANE: 555 case E1000_DEV_ID_DH89XXCC_SFP: 556 mac->type = e1000_82580; 557 break; 558 case E1000_DEV_ID_I350_COPPER: 559 case E1000_DEV_ID_I350_FIBER: 560 case E1000_DEV_ID_I350_SERDES: 561 case E1000_DEV_ID_I350_SGMII: 562 mac->type = e1000_i350; 563 break; 564 case E1000_DEV_ID_I210_COPPER: 565 case E1000_DEV_ID_I210_FIBER: 566 case E1000_DEV_ID_I210_SERDES: 567 case E1000_DEV_ID_I210_SGMII: 568 case E1000_DEV_ID_I210_COPPER_FLASHLESS: 569 case E1000_DEV_ID_I210_SERDES_FLASHLESS: 570 mac->type = e1000_i210; 571 break; 572 case E1000_DEV_ID_I211_COPPER: 573 mac->type = e1000_i211; 574 break; 575 case E1000_DEV_ID_I354_BACKPLANE_1GBPS: 576 case E1000_DEV_ID_I354_SGMII: 577 case E1000_DEV_ID_I354_BACKPLANE_2_5GBPS: 578 mac->type = e1000_i354; 579 break; 580 default: 581 return -E1000_ERR_MAC_INIT; 582 } 583 584 /* Set media type */ 585 /* The 82575 uses bits 22:23 for link mode. The mode can be changed 586 * based on the EEPROM. We cannot rely upon device ID. There 587 * is no distinguishable difference between fiber and internal 588 * SerDes mode on the 82575. There can be an external PHY attached 589 * on the SGMII interface. For this, we'll set sgmii_active to true. 590 */ 591 hw->phy.media_type = e1000_media_type_copper; 592 dev_spec->sgmii_active = false; 593 dev_spec->module_plugged = false; 594 595 ctrl_ext = rd32(E1000_CTRL_EXT); 596 597 link_mode = ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK; 598 switch (link_mode) { 599 case E1000_CTRL_EXT_LINK_MODE_1000BASE_KX: 600 hw->phy.media_type = e1000_media_type_internal_serdes; 601 break; 602 case E1000_CTRL_EXT_LINK_MODE_SGMII: 603 /* Get phy control interface type set (MDIO vs. I2C)*/ 604 if (igb_sgmii_uses_mdio_82575(hw)) { 605 hw->phy.media_type = e1000_media_type_copper; 606 dev_spec->sgmii_active = true; 607 break; 608 } 609 /* fall through for I2C based SGMII */ 610 case E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES: 611 /* read media type from SFP EEPROM */ 612 ret_val = igb_set_sfp_media_type_82575(hw); 613 if ((ret_val != 0) || 614 (hw->phy.media_type == e1000_media_type_unknown)) { 615 /* If media type was not identified then return media 616 * type defined by the CTRL_EXT settings. 617 */ 618 hw->phy.media_type = e1000_media_type_internal_serdes; 619 620 if (link_mode == E1000_CTRL_EXT_LINK_MODE_SGMII) { 621 hw->phy.media_type = e1000_media_type_copper; 622 dev_spec->sgmii_active = true; 623 } 624 625 break; 626 } 627 628 /* do not change link mode for 100BaseFX */ 629 if (dev_spec->eth_flags.e100_base_fx) 630 break; 631 632 /* change current link mode setting */ 633 ctrl_ext &= ~E1000_CTRL_EXT_LINK_MODE_MASK; 634 635 if (hw->phy.media_type == e1000_media_type_copper) 636 ctrl_ext |= E1000_CTRL_EXT_LINK_MODE_SGMII; 637 else 638 ctrl_ext |= E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES; 639 640 wr32(E1000_CTRL_EXT, ctrl_ext); 641 642 break; 643 default: 644 break; 645 } 646 647 /* mac initialization and operations */ 648 ret_val = igb_init_mac_params_82575(hw); 649 if (ret_val) 650 goto out; 651 652 /* NVM initialization */ 653 ret_val = igb_init_nvm_params_82575(hw); 654 switch (hw->mac.type) { 655 case e1000_i210: 656 case e1000_i211: 657 ret_val = igb_init_nvm_params_i210(hw); 658 break; 659 default: 660 break; 661 } 662 663 if (ret_val) 664 goto out; 665 666 /* if part supports SR-IOV then initialize mailbox parameters */ 667 switch (mac->type) { 668 case e1000_82576: 669 case e1000_i350: 670 igb_init_mbx_params_pf(hw); 671 break; 672 default: 673 break; 674 } 675 676 /* setup PHY parameters */ 677 ret_val = igb_init_phy_params_82575(hw); 678 679out: 680 return ret_val; 681} 682 683/** 684 * igb_acquire_phy_82575 - Acquire rights to access PHY 685 * @hw: pointer to the HW structure 686 * 687 * Acquire access rights to the correct PHY. This is a 688 * function pointer entry point called by the api module. 689 **/ 690static s32 igb_acquire_phy_82575(struct e1000_hw *hw) 691{ 692 u16 mask = E1000_SWFW_PHY0_SM; 693 694 if (hw->bus.func == E1000_FUNC_1) 695 mask = E1000_SWFW_PHY1_SM; 696 else if (hw->bus.func == E1000_FUNC_2) 697 mask = E1000_SWFW_PHY2_SM; 698 else if (hw->bus.func == E1000_FUNC_3) 699 mask = E1000_SWFW_PHY3_SM; 700 701 return hw->mac.ops.acquire_swfw_sync(hw, mask); 702} 703 704/** 705 * igb_release_phy_82575 - Release rights to access PHY 706 * @hw: pointer to the HW structure 707 * 708 * A wrapper to release access rights to the correct PHY. This is a 709 * function pointer entry point called by the api module. 710 **/ 711static void igb_release_phy_82575(struct e1000_hw *hw) 712{ 713 u16 mask = E1000_SWFW_PHY0_SM; 714 715 if (hw->bus.func == E1000_FUNC_1) 716 mask = E1000_SWFW_PHY1_SM; 717 else if (hw->bus.func == E1000_FUNC_2) 718 mask = E1000_SWFW_PHY2_SM; 719 else if (hw->bus.func == E1000_FUNC_3) 720 mask = E1000_SWFW_PHY3_SM; 721 722 hw->mac.ops.release_swfw_sync(hw, mask); 723} 724 725/** 726 * igb_read_phy_reg_sgmii_82575 - Read PHY register using sgmii 727 * @hw: pointer to the HW structure 728 * @offset: register offset to be read 729 * @data: pointer to the read data 730 * 731 * Reads the PHY register at offset using the serial gigabit media independent 732 * interface and stores the retrieved information in data. 733 **/ 734static s32 igb_read_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset, 735 u16 *data) 736{ 737 s32 ret_val = -E1000_ERR_PARAM; 738 739 if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) { 740 hw_dbg("PHY Address %u is out of range\n", offset); 741 goto out; 742 } 743 744 ret_val = hw->phy.ops.acquire(hw); 745 if (ret_val) 746 goto out; 747 748 ret_val = igb_read_phy_reg_i2c(hw, offset, data); 749 750 hw->phy.ops.release(hw); 751 752out: 753 return ret_val; 754} 755 756/** 757 * igb_write_phy_reg_sgmii_82575 - Write PHY register using sgmii 758 * @hw: pointer to the HW structure 759 * @offset: register offset to write to 760 * @data: data to write at register offset 761 * 762 * Writes the data to PHY register at the offset using the serial gigabit 763 * media independent interface. 764 **/ 765static s32 igb_write_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset, 766 u16 data) 767{ 768 s32 ret_val = -E1000_ERR_PARAM; 769 770 771 if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) { 772 hw_dbg("PHY Address %d is out of range\n", offset); 773 goto out; 774 } 775 776 ret_val = hw->phy.ops.acquire(hw); 777 if (ret_val) 778 goto out; 779 780 ret_val = igb_write_phy_reg_i2c(hw, offset, data); 781 782 hw->phy.ops.release(hw); 783 784out: 785 return ret_val; 786} 787 788/** 789 * igb_get_phy_id_82575 - Retrieve PHY addr and id 790 * @hw: pointer to the HW structure 791 * 792 * Retrieves the PHY address and ID for both PHY's which do and do not use 793 * sgmi interface. 794 **/ 795static s32 igb_get_phy_id_82575(struct e1000_hw *hw) 796{ 797 struct e1000_phy_info *phy = &hw->phy; 798 s32 ret_val = 0; 799 u16 phy_id; 800 u32 ctrl_ext; 801 u32 mdic; 802 803 /* Extra read required for some PHY's on i354 */ 804 if (hw->mac.type == e1000_i354) 805 igb_get_phy_id(hw); 806 807 /* For SGMII PHYs, we try the list of possible addresses until 808 * we find one that works. For non-SGMII PHYs 809 * (e.g. integrated copper PHYs), an address of 1 should 810 * work. The result of this function should mean phy->phy_addr 811 * and phy->id are set correctly. 812 */ 813 if (!(igb_sgmii_active_82575(hw))) { 814 phy->addr = 1; 815 ret_val = igb_get_phy_id(hw); 816 goto out; 817 } 818 819 if (igb_sgmii_uses_mdio_82575(hw)) { 820 switch (hw->mac.type) { 821 case e1000_82575: 822 case e1000_82576: 823 mdic = rd32(E1000_MDIC); 824 mdic &= E1000_MDIC_PHY_MASK; 825 phy->addr = mdic >> E1000_MDIC_PHY_SHIFT; 826 break; 827 case e1000_82580: 828 case e1000_i350: 829 case e1000_i354: 830 case e1000_i210: 831 case e1000_i211: 832 mdic = rd32(E1000_MDICNFG); 833 mdic &= E1000_MDICNFG_PHY_MASK; 834 phy->addr = mdic >> E1000_MDICNFG_PHY_SHIFT; 835 break; 836 default: 837 ret_val = -E1000_ERR_PHY; 838 goto out; 839 } 840 ret_val = igb_get_phy_id(hw); 841 goto out; 842 } 843 844 /* Power on sgmii phy if it is disabled */ 845 ctrl_ext = rd32(E1000_CTRL_EXT); 846 wr32(E1000_CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_SDP3_DATA); 847 wrfl(); 848 msleep(300); 849 850 /* The address field in the I2CCMD register is 3 bits and 0 is invalid. 851 * Therefore, we need to test 1-7 852 */ 853 for (phy->addr = 1; phy->addr < 8; phy->addr++) { 854 ret_val = igb_read_phy_reg_sgmii_82575(hw, PHY_ID1, &phy_id); 855 if (ret_val == 0) { 856 hw_dbg("Vendor ID 0x%08X read at address %u\n", 857 phy_id, phy->addr); 858 /* At the time of this writing, The M88 part is 859 * the only supported SGMII PHY product. 860 */ 861 if (phy_id == M88_VENDOR) 862 break; 863 } else { 864 hw_dbg("PHY address %u was unreadable\n", phy->addr); 865 } 866 } 867 868 /* A valid PHY type couldn't be found. */ 869 if (phy->addr == 8) { 870 phy->addr = 0; 871 ret_val = -E1000_ERR_PHY; 872 goto out; 873 } else { 874 ret_val = igb_get_phy_id(hw); 875 } 876 877 /* restore previous sfp cage power state */ 878 wr32(E1000_CTRL_EXT, ctrl_ext); 879 880out: 881 return ret_val; 882} 883 884/** 885 * igb_phy_hw_reset_sgmii_82575 - Performs a PHY reset 886 * @hw: pointer to the HW structure 887 * 888 * Resets the PHY using the serial gigabit media independent interface. 889 **/ 890static s32 igb_phy_hw_reset_sgmii_82575(struct e1000_hw *hw) 891{ 892 s32 ret_val; 893 894 /* This isn't a true "hard" reset, but is the only reset 895 * available to us at this time. 896 */ 897 898 hw_dbg("Soft resetting SGMII attached PHY...\n"); 899 900 /* SFP documentation requires the following to configure the SPF module 901 * to work on SGMII. No further documentation is given. 902 */ 903 ret_val = hw->phy.ops.write_reg(hw, 0x1B, 0x8084); 904 if (ret_val) 905 goto out; 906 907 ret_val = igb_phy_sw_reset(hw); 908 909out: 910 return ret_val; 911} 912 913/** 914 * igb_set_d0_lplu_state_82575 - Set Low Power Linkup D0 state 915 * @hw: pointer to the HW structure 916 * @active: true to enable LPLU, false to disable 917 * 918 * Sets the LPLU D0 state according to the active flag. When 919 * activating LPLU this function also disables smart speed 920 * and vice versa. LPLU will not be activated unless the 921 * device autonegotiation advertisement meets standards of 922 * either 10 or 10/100 or 10/100/1000 at all duplexes. 923 * This is a function pointer entry point only called by 924 * PHY setup routines. 925 **/ 926static s32 igb_set_d0_lplu_state_82575(struct e1000_hw *hw, bool active) 927{ 928 struct e1000_phy_info *phy = &hw->phy; 929 s32 ret_val; 930 u16 data; 931 932 ret_val = phy->ops.read_reg(hw, IGP02E1000_PHY_POWER_MGMT, &data); 933 if (ret_val) 934 goto out; 935 936 if (active) { 937 data |= IGP02E1000_PM_D0_LPLU; 938 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT, 939 data); 940 if (ret_val) 941 goto out; 942 943 /* When LPLU is enabled, we should disable SmartSpeed */ 944 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CONFIG, 945 &data); 946 data &= ~IGP01E1000_PSCFR_SMART_SPEED; 947 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CONFIG, 948 data); 949 if (ret_val) 950 goto out; 951 } else { 952 data &= ~IGP02E1000_PM_D0_LPLU; 953 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT, 954 data); 955 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used 956 * during Dx states where the power conservation is most 957 * important. During driver activity we should enable 958 * SmartSpeed, so performance is maintained. 959 */ 960 if (phy->smart_speed == e1000_smart_speed_on) { 961 ret_val = phy->ops.read_reg(hw, 962 IGP01E1000_PHY_PORT_CONFIG, &data); 963 if (ret_val) 964 goto out; 965 966 data |= IGP01E1000_PSCFR_SMART_SPEED; 967 ret_val = phy->ops.write_reg(hw, 968 IGP01E1000_PHY_PORT_CONFIG, data); 969 if (ret_val) 970 goto out; 971 } else if (phy->smart_speed == e1000_smart_speed_off) { 972 ret_val = phy->ops.read_reg(hw, 973 IGP01E1000_PHY_PORT_CONFIG, &data); 974 if (ret_val) 975 goto out; 976 977 data &= ~IGP01E1000_PSCFR_SMART_SPEED; 978 ret_val = phy->ops.write_reg(hw, 979 IGP01E1000_PHY_PORT_CONFIG, data); 980 if (ret_val) 981 goto out; 982 } 983 } 984 985out: 986 return ret_val; 987} 988 989/** 990 * igb_set_d0_lplu_state_82580 - Set Low Power Linkup D0 state 991 * @hw: pointer to the HW structure 992 * @active: true to enable LPLU, false to disable 993 * 994 * Sets the LPLU D0 state according to the active flag. When 995 * activating LPLU this function also disables smart speed 996 * and vice versa. LPLU will not be activated unless the 997 * device autonegotiation advertisement meets standards of 998 * either 10 or 10/100 or 10/100/1000 at all duplexes. 999 * This is a function pointer entry point only called by 1000 * PHY setup routines. 1001 **/ 1002static s32 igb_set_d0_lplu_state_82580(struct e1000_hw *hw, bool active) 1003{ 1004 struct e1000_phy_info *phy = &hw->phy; 1005 u16 data; 1006 1007 data = rd32(E1000_82580_PHY_POWER_MGMT); 1008 1009 if (active) { 1010 data |= E1000_82580_PM_D0_LPLU; 1011 1012 /* When LPLU is enabled, we should disable SmartSpeed */ 1013 data &= ~E1000_82580_PM_SPD; 1014 } else { 1015 data &= ~E1000_82580_PM_D0_LPLU; 1016 1017 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used 1018 * during Dx states where the power conservation is most 1019 * important. During driver activity we should enable 1020 * SmartSpeed, so performance is maintained. 1021 */ 1022 if (phy->smart_speed == e1000_smart_speed_on) 1023 data |= E1000_82580_PM_SPD; 1024 else if (phy->smart_speed == e1000_smart_speed_off) 1025 data &= ~E1000_82580_PM_SPD; } 1026 1027 wr32(E1000_82580_PHY_POWER_MGMT, data); 1028 return 0; 1029} 1030 1031/** 1032 * igb_set_d3_lplu_state_82580 - Sets low power link up state for D3 1033 * @hw: pointer to the HW structure 1034 * @active: boolean used to enable/disable lplu 1035 * 1036 * Success returns 0, Failure returns 1 1037 * 1038 * The low power link up (lplu) state is set to the power management level D3 1039 * and SmartSpeed is disabled when active is true, else clear lplu for D3 1040 * and enable Smartspeed. LPLU and Smartspeed are mutually exclusive. LPLU 1041 * is used during Dx states where the power conservation is most important. 1042 * During driver activity, SmartSpeed should be enabled so performance is 1043 * maintained. 1044 **/ 1045static s32 igb_set_d3_lplu_state_82580(struct e1000_hw *hw, bool active) 1046{ 1047 struct e1000_phy_info *phy = &hw->phy; 1048 u16 data; 1049 1050 data = rd32(E1000_82580_PHY_POWER_MGMT); 1051 1052 if (!active) { 1053 data &= ~E1000_82580_PM_D3_LPLU; 1054 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used 1055 * during Dx states where the power conservation is most 1056 * important. During driver activity we should enable 1057 * SmartSpeed, so performance is maintained. 1058 */ 1059 if (phy->smart_speed == e1000_smart_speed_on) 1060 data |= E1000_82580_PM_SPD; 1061 else if (phy->smart_speed == e1000_smart_speed_off) 1062 data &= ~E1000_82580_PM_SPD; 1063 } else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) || 1064 (phy->autoneg_advertised == E1000_ALL_NOT_GIG) || 1065 (phy->autoneg_advertised == E1000_ALL_10_SPEED)) { 1066 data |= E1000_82580_PM_D3_LPLU; 1067 /* When LPLU is enabled, we should disable SmartSpeed */ 1068 data &= ~E1000_82580_PM_SPD; 1069 } 1070 1071 wr32(E1000_82580_PHY_POWER_MGMT, data); 1072 return 0; 1073} 1074 1075/** 1076 * igb_acquire_nvm_82575 - Request for access to EEPROM 1077 * @hw: pointer to the HW structure 1078 * 1079 * Acquire the necessary semaphores for exclusive access to the EEPROM. 1080 * Set the EEPROM access request bit and wait for EEPROM access grant bit. 1081 * Return successful if access grant bit set, else clear the request for 1082 * EEPROM access and return -E1000_ERR_NVM (-1). 1083 **/ 1084static s32 igb_acquire_nvm_82575(struct e1000_hw *hw) 1085{ 1086 s32 ret_val; 1087 1088 ret_val = hw->mac.ops.acquire_swfw_sync(hw, E1000_SWFW_EEP_SM); 1089 if (ret_val) 1090 goto out; 1091 1092 ret_val = igb_acquire_nvm(hw); 1093 1094 if (ret_val) 1095 hw->mac.ops.release_swfw_sync(hw, E1000_SWFW_EEP_SM); 1096 1097out: 1098 return ret_val; 1099} 1100 1101/** 1102 * igb_release_nvm_82575 - Release exclusive access to EEPROM 1103 * @hw: pointer to the HW structure 1104 * 1105 * Stop any current commands to the EEPROM and clear the EEPROM request bit, 1106 * then release the semaphores acquired. 1107 **/ 1108static void igb_release_nvm_82575(struct e1000_hw *hw) 1109{ 1110 igb_release_nvm(hw); 1111 hw->mac.ops.release_swfw_sync(hw, E1000_SWFW_EEP_SM); 1112} 1113 1114/** 1115 * igb_acquire_swfw_sync_82575 - Acquire SW/FW semaphore 1116 * @hw: pointer to the HW structure 1117 * @mask: specifies which semaphore to acquire 1118 * 1119 * Acquire the SW/FW semaphore to access the PHY or NVM. The mask 1120 * will also specify which port we're acquiring the lock for. 1121 **/ 1122static s32 igb_acquire_swfw_sync_82575(struct e1000_hw *hw, u16 mask) 1123{ 1124 u32 swfw_sync; 1125 u32 swmask = mask; 1126 u32 fwmask = mask << 16; 1127 s32 ret_val = 0; 1128 s32 i = 0, timeout = 200; /* FIXME: find real value to use here */ 1129 1130 while (i < timeout) { 1131 if (igb_get_hw_semaphore(hw)) { 1132 ret_val = -E1000_ERR_SWFW_SYNC; 1133 goto out; 1134 } 1135 1136 swfw_sync = rd32(E1000_SW_FW_SYNC); 1137 if (!(swfw_sync & (fwmask | swmask))) 1138 break; 1139 1140 /* Firmware currently using resource (fwmask) 1141 * or other software thread using resource (swmask) 1142 */ 1143 igb_put_hw_semaphore(hw); 1144 mdelay(5); 1145 i++; 1146 } 1147 1148 if (i == timeout) { 1149 hw_dbg("Driver can't access resource, SW_FW_SYNC timeout.\n"); 1150 ret_val = -E1000_ERR_SWFW_SYNC; 1151 goto out; 1152 } 1153 1154 swfw_sync |= swmask; 1155 wr32(E1000_SW_FW_SYNC, swfw_sync); 1156 1157 igb_put_hw_semaphore(hw); 1158 1159out: 1160 return ret_val; 1161} 1162 1163/** 1164 * igb_release_swfw_sync_82575 - Release SW/FW semaphore 1165 * @hw: pointer to the HW structure 1166 * @mask: specifies which semaphore to acquire 1167 * 1168 * Release the SW/FW semaphore used to access the PHY or NVM. The mask 1169 * will also specify which port we're releasing the lock for. 1170 **/ 1171static void igb_release_swfw_sync_82575(struct e1000_hw *hw, u16 mask) 1172{ 1173 u32 swfw_sync; 1174 1175 while (igb_get_hw_semaphore(hw) != 0) 1176 ; /* Empty */ 1177 1178 swfw_sync = rd32(E1000_SW_FW_SYNC); 1179 swfw_sync &= ~mask; 1180 wr32(E1000_SW_FW_SYNC, swfw_sync); 1181 1182 igb_put_hw_semaphore(hw); 1183} 1184 1185/** 1186 * igb_get_cfg_done_82575 - Read config done bit 1187 * @hw: pointer to the HW structure 1188 * 1189 * Read the management control register for the config done bit for 1190 * completion status. NOTE: silicon which is EEPROM-less will fail trying 1191 * to read the config done bit, so an error is *ONLY* logged and returns 1192 * 0. If we were to return with error, EEPROM-less silicon 1193 * would not be able to be reset or change link. 1194 **/ 1195static s32 igb_get_cfg_done_82575(struct e1000_hw *hw) 1196{ 1197 s32 timeout = PHY_CFG_TIMEOUT; 1198 u32 mask = E1000_NVM_CFG_DONE_PORT_0; 1199 1200 if (hw->bus.func == 1) 1201 mask = E1000_NVM_CFG_DONE_PORT_1; 1202 else if (hw->bus.func == E1000_FUNC_2) 1203 mask = E1000_NVM_CFG_DONE_PORT_2; 1204 else if (hw->bus.func == E1000_FUNC_3) 1205 mask = E1000_NVM_CFG_DONE_PORT_3; 1206 1207 while (timeout) { 1208 if (rd32(E1000_EEMNGCTL) & mask) 1209 break; 1210 usleep_range(1000, 2000); 1211 timeout--; 1212 } 1213 if (!timeout) 1214 hw_dbg("MNG configuration cycle has not completed.\n"); 1215 1216 /* If EEPROM is not marked present, init the PHY manually */ 1217 if (((rd32(E1000_EECD) & E1000_EECD_PRES) == 0) && 1218 (hw->phy.type == e1000_phy_igp_3)) 1219 igb_phy_init_script_igp3(hw); 1220 1221 return 0; 1222} 1223 1224/** 1225 * igb_get_link_up_info_82575 - Get link speed/duplex info 1226 * @hw: pointer to the HW structure 1227 * @speed: stores the current speed 1228 * @duplex: stores the current duplex 1229 * 1230 * This is a wrapper function, if using the serial gigabit media independent 1231 * interface, use PCS to retrieve the link speed and duplex information. 1232 * Otherwise, use the generic function to get the link speed and duplex info. 1233 **/ 1234static s32 igb_get_link_up_info_82575(struct e1000_hw *hw, u16 *speed, 1235 u16 *duplex) 1236{ 1237 s32 ret_val; 1238 1239 if (hw->phy.media_type != e1000_media_type_copper) 1240 ret_val = igb_get_pcs_speed_and_duplex_82575(hw, speed, 1241 duplex); 1242 else 1243 ret_val = igb_get_speed_and_duplex_copper(hw, speed, 1244 duplex); 1245 1246 return ret_val; 1247} 1248 1249/** 1250 * igb_check_for_link_82575 - Check for link 1251 * @hw: pointer to the HW structure 1252 * 1253 * If sgmii is enabled, then use the pcs register to determine link, otherwise 1254 * use the generic interface for determining link. 1255 **/ 1256static s32 igb_check_for_link_82575(struct e1000_hw *hw) 1257{ 1258 s32 ret_val; 1259 u16 speed, duplex; 1260 1261 if (hw->phy.media_type != e1000_media_type_copper) { 1262 ret_val = igb_get_pcs_speed_and_duplex_82575(hw, &speed, 1263 &duplex); 1264 /* Use this flag to determine if link needs to be checked or 1265 * not. If we have link clear the flag so that we do not 1266 * continue to check for link. 1267 */ 1268 hw->mac.get_link_status = !hw->mac.serdes_has_link; 1269 1270 /* Configure Flow Control now that Auto-Neg has completed. 1271 * First, we need to restore the desired flow control 1272 * settings because we may have had to re-autoneg with a 1273 * different link partner. 1274 */ 1275 ret_val = igb_config_fc_after_link_up(hw); 1276 if (ret_val) 1277 hw_dbg("Error configuring flow control\n"); 1278 } else { 1279 ret_val = igb_check_for_copper_link(hw); 1280 } 1281 1282 return ret_val; 1283} 1284 1285/** 1286 * igb_power_up_serdes_link_82575 - Power up the serdes link after shutdown 1287 * @hw: pointer to the HW structure 1288 **/ 1289void igb_power_up_serdes_link_82575(struct e1000_hw *hw) 1290{ 1291 u32 reg; 1292 1293 1294 if ((hw->phy.media_type != e1000_media_type_internal_serdes) && 1295 !igb_sgmii_active_82575(hw)) 1296 return; 1297 1298 /* Enable PCS to turn on link */ 1299 reg = rd32(E1000_PCS_CFG0); 1300 reg |= E1000_PCS_CFG_PCS_EN; 1301 wr32(E1000_PCS_CFG0, reg); 1302 1303 /* Power up the laser */ 1304 reg = rd32(E1000_CTRL_EXT); 1305 reg &= ~E1000_CTRL_EXT_SDP3_DATA; 1306 wr32(E1000_CTRL_EXT, reg); 1307 1308 /* flush the write to verify completion */ 1309 wrfl(); 1310 usleep_range(1000, 2000); 1311} 1312 1313/** 1314 * igb_get_pcs_speed_and_duplex_82575 - Retrieve current speed/duplex 1315 * @hw: pointer to the HW structure 1316 * @speed: stores the current speed 1317 * @duplex: stores the current duplex 1318 * 1319 * Using the physical coding sub-layer (PCS), retrieve the current speed and 1320 * duplex, then store the values in the pointers provided. 1321 **/ 1322static s32 igb_get_pcs_speed_and_duplex_82575(struct e1000_hw *hw, u16 *speed, 1323 u16 *duplex) 1324{ 1325 struct e1000_mac_info *mac = &hw->mac; 1326 u32 pcs, status; 1327 1328 /* Set up defaults for the return values of this function */ 1329 mac->serdes_has_link = false; 1330 *speed = 0; 1331 *duplex = 0; 1332 1333 /* Read the PCS Status register for link state. For non-copper mode, 1334 * the status register is not accurate. The PCS status register is 1335 * used instead. 1336 */ 1337 pcs = rd32(E1000_PCS_LSTAT); 1338 1339 /* The link up bit determines when link is up on autoneg. The sync ok 1340 * gets set once both sides sync up and agree upon link. Stable link 1341 * can be determined by checking for both link up and link sync ok 1342 */ 1343 if ((pcs & E1000_PCS_LSTS_LINK_OK) && (pcs & E1000_PCS_LSTS_SYNK_OK)) { 1344 mac->serdes_has_link = true; 1345 1346 /* Detect and store PCS speed */ 1347 if (pcs & E1000_PCS_LSTS_SPEED_1000) 1348 *speed = SPEED_1000; 1349 else if (pcs & E1000_PCS_LSTS_SPEED_100) 1350 *speed = SPEED_100; 1351 else 1352 *speed = SPEED_10; 1353 1354 /* Detect and store PCS duplex */ 1355 if (pcs & E1000_PCS_LSTS_DUPLEX_FULL) 1356 *duplex = FULL_DUPLEX; 1357 else 1358 *duplex = HALF_DUPLEX; 1359 1360 /* Check if it is an I354 2.5Gb backplane connection. */ 1361 if (mac->type == e1000_i354) { 1362 status = rd32(E1000_STATUS); 1363 if ((status & E1000_STATUS_2P5_SKU) && 1364 !(status & E1000_STATUS_2P5_SKU_OVER)) { 1365 *speed = SPEED_2500; 1366 *duplex = FULL_DUPLEX; 1367 hw_dbg("2500 Mbs, "); 1368 hw_dbg("Full Duplex\n"); 1369 } 1370 } 1371 1372 } 1373 1374 return 0; 1375} 1376 1377/** 1378 * igb_shutdown_serdes_link_82575 - Remove link during power down 1379 * @hw: pointer to the HW structure 1380 * 1381 * In the case of fiber serdes, shut down optics and PCS on driver unload 1382 * when management pass thru is not enabled. 1383 **/ 1384void igb_shutdown_serdes_link_82575(struct e1000_hw *hw) 1385{ 1386 u32 reg; 1387 1388 if (hw->phy.media_type != e1000_media_type_internal_serdes && 1389 igb_sgmii_active_82575(hw)) 1390 return; 1391 1392 if (!igb_enable_mng_pass_thru(hw)) { 1393 /* Disable PCS to turn off link */ 1394 reg = rd32(E1000_PCS_CFG0); 1395 reg &= ~E1000_PCS_CFG_PCS_EN; 1396 wr32(E1000_PCS_CFG0, reg); 1397 1398 /* shutdown the laser */ 1399 reg = rd32(E1000_CTRL_EXT); 1400 reg |= E1000_CTRL_EXT_SDP3_DATA; 1401 wr32(E1000_CTRL_EXT, reg); 1402 1403 /* flush the write to verify completion */ 1404 wrfl(); 1405 usleep_range(1000, 2000); 1406 } 1407} 1408 1409/** 1410 * igb_reset_hw_82575 - Reset hardware 1411 * @hw: pointer to the HW structure 1412 * 1413 * This resets the hardware into a known state. This is a 1414 * function pointer entry point called by the api module. 1415 **/ 1416static s32 igb_reset_hw_82575(struct e1000_hw *hw) 1417{ 1418 u32 ctrl; 1419 s32 ret_val; 1420 1421 /* Prevent the PCI-E bus from sticking if there is no TLP connection 1422 * on the last TLP read/write transaction when MAC is reset. 1423 */ 1424 ret_val = igb_disable_pcie_master(hw); 1425 if (ret_val) 1426 hw_dbg("PCI-E Master disable polling has failed.\n"); 1427 1428 /* set the completion timeout for interface */ 1429 ret_val = igb_set_pcie_completion_timeout(hw); 1430 if (ret_val) 1431 hw_dbg("PCI-E Set completion timeout has failed.\n"); 1432 1433 hw_dbg("Masking off all interrupts\n"); 1434 wr32(E1000_IMC, 0xffffffff); 1435 1436 wr32(E1000_RCTL, 0); 1437 wr32(E1000_TCTL, E1000_TCTL_PSP); 1438 wrfl(); 1439 1440 usleep_range(10000, 20000); 1441 1442 ctrl = rd32(E1000_CTRL); 1443 1444 hw_dbg("Issuing a global reset to MAC\n"); 1445 wr32(E1000_CTRL, ctrl | E1000_CTRL_RST); 1446 1447 ret_val = igb_get_auto_rd_done(hw); 1448 if (ret_val) { 1449 /* When auto config read does not complete, do not 1450 * return with an error. This can happen in situations 1451 * where there is no eeprom and prevents getting link. 1452 */ 1453 hw_dbg("Auto Read Done did not complete\n"); 1454 } 1455 1456 /* If EEPROM is not present, run manual init scripts */ 1457 if ((rd32(E1000_EECD) & E1000_EECD_PRES) == 0) 1458 igb_reset_init_script_82575(hw); 1459 1460 /* Clear any pending interrupt events. */ 1461 wr32(E1000_IMC, 0xffffffff); 1462 rd32(E1000_ICR); 1463 1464 /* Install any alternate MAC address into RAR0 */ 1465 ret_val = igb_check_alt_mac_addr(hw); 1466 1467 return ret_val; 1468} 1469 1470/** 1471 * igb_init_hw_82575 - Initialize hardware 1472 * @hw: pointer to the HW structure 1473 * 1474 * This inits the hardware readying it for operation. 1475 **/ 1476static s32 igb_init_hw_82575(struct e1000_hw *hw) 1477{ 1478 struct e1000_mac_info *mac = &hw->mac; 1479 s32 ret_val; 1480 u16 i, rar_count = mac->rar_entry_count; 1481 1482 if ((hw->mac.type >= e1000_i210) && 1483 !(igb_get_flash_presence_i210(hw))) { 1484 ret_val = igb_pll_workaround_i210(hw); 1485 if (ret_val) 1486 return ret_val; 1487 } 1488 1489 /* Initialize identification LED */ 1490 ret_val = igb_id_led_init(hw); 1491 if (ret_val) { 1492 hw_dbg("Error initializing identification LED\n"); 1493 /* This is not fatal and we should not stop init due to this */ 1494 } 1495 1496 /* Disabling VLAN filtering */ 1497 hw_dbg("Initializing the IEEE VLAN\n"); 1498 if ((hw->mac.type == e1000_i350) || (hw->mac.type == e1000_i354)) 1499 igb_clear_vfta_i350(hw); 1500 else 1501 igb_clear_vfta(hw); 1502 1503 /* Setup the receive address */ 1504 igb_init_rx_addrs(hw, rar_count); 1505 1506 /* Zero out the Multicast HASH table */ 1507 hw_dbg("Zeroing the MTA\n"); 1508 for (i = 0; i < mac->mta_reg_count; i++) 1509 array_wr32(E1000_MTA, i, 0); 1510 1511 /* Zero out the Unicast HASH table */ 1512 hw_dbg("Zeroing the UTA\n"); 1513 for (i = 0; i < mac->uta_reg_count; i++) 1514 array_wr32(E1000_UTA, i, 0); 1515 1516 /* Setup link and flow control */ 1517 ret_val = igb_setup_link(hw); 1518 1519 /* Clear all of the statistics registers (clear on read). It is 1520 * important that we do this after we have tried to establish link 1521 * because the symbol error count will increment wildly if there 1522 * is no link. 1523 */ 1524 igb_clear_hw_cntrs_82575(hw); 1525 return ret_val; 1526} 1527 1528/** 1529 * igb_setup_copper_link_82575 - Configure copper link settings 1530 * @hw: pointer to the HW structure 1531 * 1532 * Configures the link for auto-neg or forced speed and duplex. Then we check 1533 * for link, once link is established calls to configure collision distance 1534 * and flow control are called. 1535 **/ 1536static s32 igb_setup_copper_link_82575(struct e1000_hw *hw) 1537{ 1538 u32 ctrl; 1539 s32 ret_val; 1540 u32 phpm_reg; 1541 1542 ctrl = rd32(E1000_CTRL); 1543 ctrl |= E1000_CTRL_SLU; 1544 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); 1545 wr32(E1000_CTRL, ctrl); 1546 1547 /* Clear Go Link Disconnect bit on supported devices */ 1548 switch (hw->mac.type) { 1549 case e1000_82580: 1550 case e1000_i350: 1551 case e1000_i210: 1552 case e1000_i211: 1553 phpm_reg = rd32(E1000_82580_PHY_POWER_MGMT); 1554 phpm_reg &= ~E1000_82580_PM_GO_LINKD; 1555 wr32(E1000_82580_PHY_POWER_MGMT, phpm_reg); 1556 break; 1557 default: 1558 break; 1559 } 1560 1561 ret_val = igb_setup_serdes_link_82575(hw); 1562 if (ret_val) 1563 goto out; 1564 1565 if (igb_sgmii_active_82575(hw) && !hw->phy.reset_disable) { 1566 /* allow time for SFP cage time to power up phy */ 1567 msleep(300); 1568 1569 ret_val = hw->phy.ops.reset(hw); 1570 if (ret_val) { 1571 hw_dbg("Error resetting the PHY.\n"); 1572 goto out; 1573 } 1574 } 1575 switch (hw->phy.type) { 1576 case e1000_phy_i210: 1577 case e1000_phy_m88: 1578 switch (hw->phy.id) { 1579 case I347AT4_E_PHY_ID: 1580 case M88E1112_E_PHY_ID: 1581 case M88E1543_E_PHY_ID: 1582 case I210_I_PHY_ID: 1583 ret_val = igb_copper_link_setup_m88_gen2(hw); 1584 break; 1585 default: 1586 ret_val = igb_copper_link_setup_m88(hw); 1587 break; 1588 } 1589 break; 1590 case e1000_phy_igp_3: 1591 ret_val = igb_copper_link_setup_igp(hw); 1592 break; 1593 case e1000_phy_82580: 1594 ret_val = igb_copper_link_setup_82580(hw); 1595 break; 1596 default: 1597 ret_val = -E1000_ERR_PHY; 1598 break; 1599 } 1600 1601 if (ret_val) 1602 goto out; 1603 1604 ret_val = igb_setup_copper_link(hw); 1605out: 1606 return ret_val; 1607} 1608 1609/** 1610 * igb_setup_serdes_link_82575 - Setup link for serdes 1611 * @hw: pointer to the HW structure 1612 * 1613 * Configure the physical coding sub-layer (PCS) link. The PCS link is 1614 * used on copper connections where the serialized gigabit media independent 1615 * interface (sgmii), or serdes fiber is being used. Configures the link 1616 * for auto-negotiation or forces speed/duplex. 1617 **/ 1618static s32 igb_setup_serdes_link_82575(struct e1000_hw *hw) 1619{ 1620 u32 ctrl_ext, ctrl_reg, reg, anadv_reg; 1621 bool pcs_autoneg; 1622 s32 ret_val = 0; 1623 u16 data; 1624 1625 if ((hw->phy.media_type != e1000_media_type_internal_serdes) && 1626 !igb_sgmii_active_82575(hw)) 1627 return ret_val; 1628 1629 1630 /* On the 82575, SerDes loopback mode persists until it is 1631 * explicitly turned off or a power cycle is performed. A read to 1632 * the register does not indicate its status. Therefore, we ensure 1633 * loopback mode is disabled during initialization. 1634 */ 1635 wr32(E1000_SCTL, E1000_SCTL_DISABLE_SERDES_LOOPBACK); 1636 1637 /* power on the sfp cage if present and turn on I2C */ 1638 ctrl_ext = rd32(E1000_CTRL_EXT); 1639 ctrl_ext &= ~E1000_CTRL_EXT_SDP3_DATA; 1640 ctrl_ext |= E1000_CTRL_I2C_ENA; 1641 wr32(E1000_CTRL_EXT, ctrl_ext); 1642 1643 ctrl_reg = rd32(E1000_CTRL); 1644 ctrl_reg |= E1000_CTRL_SLU; 1645 1646 if (hw->mac.type == e1000_82575 || hw->mac.type == e1000_82576) { 1647 /* set both sw defined pins */ 1648 ctrl_reg |= E1000_CTRL_SWDPIN0 | E1000_CTRL_SWDPIN1; 1649 1650 /* Set switch control to serdes energy detect */ 1651 reg = rd32(E1000_CONNSW); 1652 reg |= E1000_CONNSW_ENRGSRC; 1653 wr32(E1000_CONNSW, reg); 1654 } 1655 1656 reg = rd32(E1000_PCS_LCTL); 1657 1658 /* default pcs_autoneg to the same setting as mac autoneg */ 1659 pcs_autoneg = hw->mac.autoneg; 1660 1661 switch (ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK) { 1662 case E1000_CTRL_EXT_LINK_MODE_SGMII: 1663 /* sgmii mode lets the phy handle forcing speed/duplex */ 1664 pcs_autoneg = true; 1665 /* autoneg time out should be disabled for SGMII mode */ 1666 reg &= ~(E1000_PCS_LCTL_AN_TIMEOUT); 1667 break; 1668 case E1000_CTRL_EXT_LINK_MODE_1000BASE_KX: 1669 /* disable PCS autoneg and support parallel detect only */ 1670 pcs_autoneg = false; 1671 default: 1672 if (hw->mac.type == e1000_82575 || 1673 hw->mac.type == e1000_82576) { 1674 ret_val = hw->nvm.ops.read(hw, NVM_COMPAT, 1, &data); 1675 if (ret_val) { 1676 hw_dbg(KERN_DEBUG "NVM Read Error\n\n"); 1677 return ret_val; 1678 } 1679 1680 if (data & E1000_EEPROM_PCS_AUTONEG_DISABLE_BIT) 1681 pcs_autoneg = false; 1682 } 1683 1684 /* non-SGMII modes only supports a speed of 1000/Full for the 1685 * link so it is best to just force the MAC and let the pcs 1686 * link either autoneg or be forced to 1000/Full 1687 */ 1688 ctrl_reg |= E1000_CTRL_SPD_1000 | E1000_CTRL_FRCSPD | 1689 E1000_CTRL_FD | E1000_CTRL_FRCDPX; 1690 1691 /* set speed of 1000/Full if speed/duplex is forced */ 1692 reg |= E1000_PCS_LCTL_FSV_1000 | E1000_PCS_LCTL_FDV_FULL; 1693 break; 1694 } 1695 1696 wr32(E1000_CTRL, ctrl_reg); 1697 1698 /* New SerDes mode allows for forcing speed or autonegotiating speed 1699 * at 1gb. Autoneg should be default set by most drivers. This is the 1700 * mode that will be compatible with older link partners and switches. 1701 * However, both are supported by the hardware and some drivers/tools. 1702 */ 1703 reg &= ~(E1000_PCS_LCTL_AN_ENABLE | E1000_PCS_LCTL_FLV_LINK_UP | 1704 E1000_PCS_LCTL_FSD | E1000_PCS_LCTL_FORCE_LINK); 1705 1706 if (pcs_autoneg) { 1707 /* Set PCS register for autoneg */ 1708 reg |= E1000_PCS_LCTL_AN_ENABLE | /* Enable Autoneg */ 1709 E1000_PCS_LCTL_AN_RESTART; /* Restart autoneg */ 1710 1711 /* Disable force flow control for autoneg */ 1712 reg &= ~E1000_PCS_LCTL_FORCE_FCTRL; 1713 1714 /* Configure flow control advertisement for autoneg */ 1715 anadv_reg = rd32(E1000_PCS_ANADV); 1716 anadv_reg &= ~(E1000_TXCW_ASM_DIR | E1000_TXCW_PAUSE); 1717 switch (hw->fc.requested_mode) { 1718 case e1000_fc_full: 1719 case e1000_fc_rx_pause: 1720 anadv_reg |= E1000_TXCW_ASM_DIR; 1721 anadv_reg |= E1000_TXCW_PAUSE; 1722 break; 1723 case e1000_fc_tx_pause: 1724 anadv_reg |= E1000_TXCW_ASM_DIR; 1725 break; 1726 default: 1727 break; 1728 } 1729 wr32(E1000_PCS_ANADV, anadv_reg); 1730 1731 hw_dbg("Configuring Autoneg:PCS_LCTL=0x%08X\n", reg); 1732 } else { 1733 /* Set PCS register for forced link */ 1734 reg |= E1000_PCS_LCTL_FSD; /* Force Speed */ 1735 1736 /* Force flow control for forced link */ 1737 reg |= E1000_PCS_LCTL_FORCE_FCTRL; 1738 1739 hw_dbg("Configuring Forced Link:PCS_LCTL=0x%08X\n", reg); 1740 } 1741 1742 wr32(E1000_PCS_LCTL, reg); 1743 1744 if (!pcs_autoneg && !igb_sgmii_active_82575(hw)) 1745 igb_force_mac_fc(hw); 1746 1747 return ret_val; 1748} 1749 1750/** 1751 * igb_sgmii_active_82575 - Return sgmii state 1752 * @hw: pointer to the HW structure 1753 * 1754 * 82575 silicon has a serialized gigabit media independent interface (sgmii) 1755 * which can be enabled for use in the embedded applications. Simply 1756 * return the current state of the sgmii interface. 1757 **/ 1758static bool igb_sgmii_active_82575(struct e1000_hw *hw) 1759{ 1760 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575; 1761 return dev_spec->sgmii_active; 1762} 1763 1764/** 1765 * igb_reset_init_script_82575 - Inits HW defaults after reset 1766 * @hw: pointer to the HW structure 1767 * 1768 * Inits recommended HW defaults after a reset when there is no EEPROM 1769 * detected. This is only for the 82575. 1770 **/ 1771static s32 igb_reset_init_script_82575(struct e1000_hw *hw) 1772{ 1773 if (hw->mac.type == e1000_82575) { 1774 hw_dbg("Running reset init script for 82575\n"); 1775 /* SerDes configuration via SERDESCTRL */ 1776 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x00, 0x0C); 1777 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x01, 0x78); 1778 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x1B, 0x23); 1779 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x23, 0x15); 1780 1781 /* CCM configuration via CCMCTL register */ 1782 igb_write_8bit_ctrl_reg(hw, E1000_CCMCTL, 0x14, 0x00); 1783 igb_write_8bit_ctrl_reg(hw, E1000_CCMCTL, 0x10, 0x00); 1784 1785 /* PCIe lanes configuration */ 1786 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x00, 0xEC); 1787 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x61, 0xDF); 1788 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x34, 0x05); 1789 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x2F, 0x81); 1790 1791 /* PCIe PLL Configuration */ 1792 igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x02, 0x47); 1793 igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x14, 0x00); 1794 igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x10, 0x00); 1795 } 1796 1797 return 0; 1798} 1799 1800/** 1801 * igb_read_mac_addr_82575 - Read device MAC address 1802 * @hw: pointer to the HW structure 1803 **/ 1804static s32 igb_read_mac_addr_82575(struct e1000_hw *hw) 1805{ 1806 s32 ret_val = 0; 1807 1808 /* If there's an alternate MAC address place it in RAR0 1809 * so that it will override the Si installed default perm 1810 * address. 1811 */ 1812 ret_val = igb_check_alt_mac_addr(hw); 1813 if (ret_val) 1814 goto out; 1815 1816 ret_val = igb_read_mac_addr(hw); 1817 1818out: 1819 return ret_val; 1820} 1821 1822/** 1823 * igb_power_down_phy_copper_82575 - Remove link during PHY power down 1824 * @hw: pointer to the HW structure 1825 * 1826 * In the case of a PHY power down to save power, or to turn off link during a 1827 * driver unload, or wake on lan is not enabled, remove the link. 1828 **/ 1829void igb_power_down_phy_copper_82575(struct e1000_hw *hw) 1830{ 1831 /* If the management interface is not enabled, then power down */ 1832 if (!(igb_enable_mng_pass_thru(hw) || igb_check_reset_block(hw))) 1833 igb_power_down_phy_copper(hw); 1834} 1835 1836/** 1837 * igb_clear_hw_cntrs_82575 - Clear device specific hardware counters 1838 * @hw: pointer to the HW structure 1839 * 1840 * Clears the hardware counters by reading the counter registers. 1841 **/ 1842static void igb_clear_hw_cntrs_82575(struct e1000_hw *hw) 1843{ 1844 igb_clear_hw_cntrs_base(hw); 1845 1846 rd32(E1000_PRC64); 1847 rd32(E1000_PRC127); 1848 rd32(E1000_PRC255); 1849 rd32(E1000_PRC511); 1850 rd32(E1000_PRC1023); 1851 rd32(E1000_PRC1522); 1852 rd32(E1000_PTC64); 1853 rd32(E1000_PTC127); 1854 rd32(E1000_PTC255); 1855 rd32(E1000_PTC511); 1856 rd32(E1000_PTC1023); 1857 rd32(E1000_PTC1522); 1858 1859 rd32(E1000_ALGNERRC); 1860 rd32(E1000_RXERRC); 1861 rd32(E1000_TNCRS); 1862 rd32(E1000_CEXTERR); 1863 rd32(E1000_TSCTC); 1864 rd32(E1000_TSCTFC); 1865 1866 rd32(E1000_MGTPRC); 1867 rd32(E1000_MGTPDC); 1868 rd32(E1000_MGTPTC); 1869 1870 rd32(E1000_IAC); 1871 rd32(E1000_ICRXOC); 1872 1873 rd32(E1000_ICRXPTC); 1874 rd32(E1000_ICRXATC); 1875 rd32(E1000_ICTXPTC); 1876 rd32(E1000_ICTXATC); 1877 rd32(E1000_ICTXQEC); 1878 rd32(E1000_ICTXQMTC); 1879 rd32(E1000_ICRXDMTC); 1880 1881 rd32(E1000_CBTMPC); 1882 rd32(E1000_HTDPMC); 1883 rd32(E1000_CBRMPC); 1884 rd32(E1000_RPTHC); 1885 rd32(E1000_HGPTC); 1886 rd32(E1000_HTCBDPC); 1887 rd32(E1000_HGORCL); 1888 rd32(E1000_HGORCH); 1889 rd32(E1000_HGOTCL); 1890 rd32(E1000_HGOTCH); 1891 rd32(E1000_LENERRS); 1892 1893 /* This register should not be read in copper configurations */ 1894 if (hw->phy.media_type == e1000_media_type_internal_serdes || 1895 igb_sgmii_active_82575(hw)) 1896 rd32(E1000_SCVPC); 1897} 1898 1899/** 1900 * igb_rx_fifo_flush_82575 - Clean rx fifo after RX enable 1901 * @hw: pointer to the HW structure 1902 * 1903 * After rx enable if managability is enabled then there is likely some 1904 * bad data at the start of the fifo and possibly in the DMA fifo. This 1905 * function clears the fifos and flushes any packets that came in as rx was 1906 * being enabled. 1907 **/ 1908void igb_rx_fifo_flush_82575(struct e1000_hw *hw) 1909{ 1910 u32 rctl, rlpml, rxdctl[4], rfctl, temp_rctl, rx_enabled; 1911 int i, ms_wait; 1912 1913 if (hw->mac.type != e1000_82575 || 1914 !(rd32(E1000_MANC) & E1000_MANC_RCV_TCO_EN)) 1915 return; 1916 1917 /* Disable all RX queues */ 1918 for (i = 0; i < 4; i++) { 1919 rxdctl[i] = rd32(E1000_RXDCTL(i)); 1920 wr32(E1000_RXDCTL(i), 1921 rxdctl[i] & ~E1000_RXDCTL_QUEUE_ENABLE); 1922 } 1923 /* Poll all queues to verify they have shut down */ 1924 for (ms_wait = 0; ms_wait < 10; ms_wait++) { 1925 usleep_range(1000, 2000); 1926 rx_enabled = 0; 1927 for (i = 0; i < 4; i++) 1928 rx_enabled |= rd32(E1000_RXDCTL(i)); 1929 if (!(rx_enabled & E1000_RXDCTL_QUEUE_ENABLE)) 1930 break; 1931 } 1932 1933 if (ms_wait == 10) 1934 hw_dbg("Queue disable timed out after 10ms\n"); 1935 1936 /* Clear RLPML, RCTL.SBP, RFCTL.LEF, and set RCTL.LPE so that all 1937 * incoming packets are rejected. Set enable and wait 2ms so that 1938 * any packet that was coming in as RCTL.EN was set is flushed 1939 */ 1940 rfctl = rd32(E1000_RFCTL); 1941 wr32(E1000_RFCTL, rfctl & ~E1000_RFCTL_LEF); 1942 1943 rlpml = rd32(E1000_RLPML); 1944 wr32(E1000_RLPML, 0); 1945 1946 rctl = rd32(E1000_RCTL); 1947 temp_rctl = rctl & ~(E1000_RCTL_EN | E1000_RCTL_SBP); 1948 temp_rctl |= E1000_RCTL_LPE; 1949 1950 wr32(E1000_RCTL, temp_rctl); 1951 wr32(E1000_RCTL, temp_rctl | E1000_RCTL_EN); 1952 wrfl(); 1953 usleep_range(2000, 3000); 1954 1955 /* Enable RX queues that were previously enabled and restore our 1956 * previous state 1957 */ 1958 for (i = 0; i < 4; i++) 1959 wr32(E1000_RXDCTL(i), rxdctl[i]); 1960 wr32(E1000_RCTL, rctl); 1961 wrfl(); 1962 1963 wr32(E1000_RLPML, rlpml); 1964 wr32(E1000_RFCTL, rfctl); 1965 1966 /* Flush receive errors generated by workaround */ 1967 rd32(E1000_ROC); 1968 rd32(E1000_RNBC); 1969 rd32(E1000_MPC); 1970} 1971 1972/** 1973 * igb_set_pcie_completion_timeout - set pci-e completion timeout 1974 * @hw: pointer to the HW structure 1975 * 1976 * The defaults for 82575 and 82576 should be in the range of 50us to 50ms, 1977 * however the hardware default for these parts is 500us to 1ms which is less 1978 * than the 10ms recommended by the pci-e spec. To address this we need to 1979 * increase the value to either 10ms to 200ms for capability version 1 config, 1980 * or 16ms to 55ms for version 2. 1981 **/ 1982static s32 igb_set_pcie_completion_timeout(struct e1000_hw *hw) 1983{ 1984 u32 gcr = rd32(E1000_GCR); 1985 s32 ret_val = 0; 1986 u16 pcie_devctl2; 1987 1988 /* only take action if timeout value is defaulted to 0 */ 1989 if (gcr & E1000_GCR_CMPL_TMOUT_MASK) 1990 goto out; 1991 1992 /* if capabilities version is type 1 we can write the 1993 * timeout of 10ms to 200ms through the GCR register 1994 */ 1995 if (!(gcr & E1000_GCR_CAP_VER2)) { 1996 gcr |= E1000_GCR_CMPL_TMOUT_10ms; 1997 goto out; 1998 } 1999 2000 /* for version 2 capabilities we need to write the config space 2001 * directly in order to set the completion timeout value for 2002 * 16ms to 55ms 2003 */ 2004 ret_val = igb_read_pcie_cap_reg(hw, PCIE_DEVICE_CONTROL2, 2005 &pcie_devctl2); 2006 if (ret_val) 2007 goto out; 2008 2009 pcie_devctl2 |= PCIE_DEVICE_CONTROL2_16ms; 2010 2011 ret_val = igb_write_pcie_cap_reg(hw, PCIE_DEVICE_CONTROL2, 2012 &pcie_devctl2); 2013out: 2014 /* disable completion timeout resend */ 2015 gcr &= ~E1000_GCR_CMPL_TMOUT_RESEND; 2016 2017 wr32(E1000_GCR, gcr); 2018 return ret_val; 2019} 2020 2021/** 2022 * igb_vmdq_set_anti_spoofing_pf - enable or disable anti-spoofing 2023 * @hw: pointer to the hardware struct 2024 * @enable: state to enter, either enabled or disabled 2025 * @pf: Physical Function pool - do not set anti-spoofing for the PF 2026 * 2027 * enables/disables L2 switch anti-spoofing functionality. 2028 **/ 2029void igb_vmdq_set_anti_spoofing_pf(struct e1000_hw *hw, bool enable, int pf) 2030{ 2031 u32 reg_val, reg_offset; 2032 2033 switch (hw->mac.type) { 2034 case e1000_82576: 2035 reg_offset = E1000_DTXSWC; 2036 break; 2037 case e1000_i350: 2038 case e1000_i354: 2039 reg_offset = E1000_TXSWC; 2040 break; 2041 default: 2042 return; 2043 } 2044 2045 reg_val = rd32(reg_offset); 2046 if (enable) { 2047 reg_val |= (E1000_DTXSWC_MAC_SPOOF_MASK | 2048 E1000_DTXSWC_VLAN_SPOOF_MASK); 2049 /* The PF can spoof - it has to in order to 2050 * support emulation mode NICs 2051 */ 2052 reg_val ^= (1 << pf | 1 << (pf + MAX_NUM_VFS)); 2053 } else { 2054 reg_val &= ~(E1000_DTXSWC_MAC_SPOOF_MASK | 2055 E1000_DTXSWC_VLAN_SPOOF_MASK); 2056 } 2057 wr32(reg_offset, reg_val); 2058} 2059 2060/** 2061 * igb_vmdq_set_loopback_pf - enable or disable vmdq loopback 2062 * @hw: pointer to the hardware struct 2063 * @enable: state to enter, either enabled or disabled 2064 * 2065 * enables/disables L2 switch loopback functionality. 2066 **/ 2067void igb_vmdq_set_loopback_pf(struct e1000_hw *hw, bool enable) 2068{ 2069 u32 dtxswc; 2070 2071 switch (hw->mac.type) { 2072 case e1000_82576: 2073 dtxswc = rd32(E1000_DTXSWC); 2074 if (enable) 2075 dtxswc |= E1000_DTXSWC_VMDQ_LOOPBACK_EN; 2076 else 2077 dtxswc &= ~E1000_DTXSWC_VMDQ_LOOPBACK_EN; 2078 wr32(E1000_DTXSWC, dtxswc); 2079 break; 2080 case e1000_i354: 2081 case e1000_i350: 2082 dtxswc = rd32(E1000_TXSWC); 2083 if (enable) 2084 dtxswc |= E1000_DTXSWC_VMDQ_LOOPBACK_EN; 2085 else 2086 dtxswc &= ~E1000_DTXSWC_VMDQ_LOOPBACK_EN; 2087 wr32(E1000_TXSWC, dtxswc); 2088 break; 2089 default: 2090 /* Currently no other hardware supports loopback */ 2091 break; 2092 } 2093 2094} 2095 2096/** 2097 * igb_vmdq_set_replication_pf - enable or disable vmdq replication 2098 * @hw: pointer to the hardware struct 2099 * @enable: state to enter, either enabled or disabled 2100 * 2101 * enables/disables replication of packets across multiple pools. 2102 **/ 2103void igb_vmdq_set_replication_pf(struct e1000_hw *hw, bool enable) 2104{ 2105 u32 vt_ctl = rd32(E1000_VT_CTL); 2106 2107 if (enable) 2108 vt_ctl |= E1000_VT_CTL_VM_REPL_EN; 2109 else 2110 vt_ctl &= ~E1000_VT_CTL_VM_REPL_EN; 2111 2112 wr32(E1000_VT_CTL, vt_ctl); 2113} 2114 2115/** 2116 * igb_read_phy_reg_82580 - Read 82580 MDI control register 2117 * @hw: pointer to the HW structure 2118 * @offset: register offset to be read 2119 * @data: pointer to the read data 2120 * 2121 * Reads the MDI control register in the PHY at offset and stores the 2122 * information read to data. 2123 **/ 2124static s32 igb_read_phy_reg_82580(struct e1000_hw *hw, u32 offset, u16 *data) 2125{ 2126 s32 ret_val; 2127 2128 ret_val = hw->phy.ops.acquire(hw); 2129 if (ret_val) 2130 goto out; 2131 2132 ret_val = igb_read_phy_reg_mdic(hw, offset, data); 2133 2134 hw->phy.ops.release(hw); 2135 2136out: 2137 return ret_val; 2138} 2139 2140/** 2141 * igb_write_phy_reg_82580 - Write 82580 MDI control register 2142 * @hw: pointer to the HW structure 2143 * @offset: register offset to write to 2144 * @data: data to write to register at offset 2145 * 2146 * Writes data to MDI control register in the PHY at offset. 2147 **/ 2148static s32 igb_write_phy_reg_82580(struct e1000_hw *hw, u32 offset, u16 data) 2149{ 2150 s32 ret_val; 2151 2152 2153 ret_val = hw->phy.ops.acquire(hw); 2154 if (ret_val) 2155 goto out; 2156 2157 ret_val = igb_write_phy_reg_mdic(hw, offset, data); 2158 2159 hw->phy.ops.release(hw); 2160 2161out: 2162 return ret_val; 2163} 2164 2165/** 2166 * igb_reset_mdicnfg_82580 - Reset MDICNFG destination and com_mdio bits 2167 * @hw: pointer to the HW structure 2168 * 2169 * This resets the the MDICNFG.Destination and MDICNFG.Com_MDIO bits based on 2170 * the values found in the EEPROM. This addresses an issue in which these 2171 * bits are not restored from EEPROM after reset. 2172 **/ 2173static s32 igb_reset_mdicnfg_82580(struct e1000_hw *hw) 2174{ 2175 s32 ret_val = 0; 2176 u32 mdicnfg; 2177 u16 nvm_data = 0; 2178 2179 if (hw->mac.type != e1000_82580) 2180 goto out; 2181 if (!igb_sgmii_active_82575(hw)) 2182 goto out; 2183 2184 ret_val = hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A + 2185 NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1, 2186 &nvm_data); 2187 if (ret_val) { 2188 hw_dbg("NVM Read Error\n"); 2189 goto out; 2190 } 2191 2192 mdicnfg = rd32(E1000_MDICNFG); 2193 if (nvm_data & NVM_WORD24_EXT_MDIO) 2194 mdicnfg |= E1000_MDICNFG_EXT_MDIO; 2195 if (nvm_data & NVM_WORD24_COM_MDIO) 2196 mdicnfg |= E1000_MDICNFG_COM_MDIO; 2197 wr32(E1000_MDICNFG, mdicnfg); 2198out: 2199 return ret_val; 2200} 2201 2202/** 2203 * igb_reset_hw_82580 - Reset hardware 2204 * @hw: pointer to the HW structure 2205 * 2206 * This resets function or entire device (all ports, etc.) 2207 * to a known state. 2208 **/ 2209static s32 igb_reset_hw_82580(struct e1000_hw *hw) 2210{ 2211 s32 ret_val = 0; 2212 /* BH SW mailbox bit in SW_FW_SYNC */ 2213 u16 swmbsw_mask = E1000_SW_SYNCH_MB; 2214 u32 ctrl; 2215 bool global_device_reset = hw->dev_spec._82575.global_device_reset; 2216 2217 hw->dev_spec._82575.global_device_reset = false; 2218 2219 /* due to hw errata, global device reset doesn't always 2220 * work on 82580 2221 */ 2222 if (hw->mac.type == e1000_82580) 2223 global_device_reset = false; 2224 2225 /* Get current control state. */ 2226 ctrl = rd32(E1000_CTRL); 2227 2228 /* Prevent the PCI-E bus from sticking if there is no TLP connection 2229 * on the last TLP read/write transaction when MAC is reset. 2230 */ 2231 ret_val = igb_disable_pcie_master(hw); 2232 if (ret_val) 2233 hw_dbg("PCI-E Master disable polling has failed.\n"); 2234 2235 hw_dbg("Masking off all interrupts\n"); 2236 wr32(E1000_IMC, 0xffffffff); 2237 wr32(E1000_RCTL, 0); 2238 wr32(E1000_TCTL, E1000_TCTL_PSP); 2239 wrfl(); 2240 2241 usleep_range(10000, 11000); 2242 2243 /* Determine whether or not a global dev reset is requested */ 2244 if (global_device_reset && 2245 hw->mac.ops.acquire_swfw_sync(hw, swmbsw_mask)) 2246 global_device_reset = false; 2247 2248 if (global_device_reset && 2249 !(rd32(E1000_STATUS) & E1000_STAT_DEV_RST_SET)) 2250 ctrl |= E1000_CTRL_DEV_RST; 2251 else 2252 ctrl |= E1000_CTRL_RST; 2253 2254 wr32(E1000_CTRL, ctrl); 2255 wrfl(); 2256 2257 /* Add delay to insure DEV_RST has time to complete */ 2258 if (global_device_reset) 2259 usleep_range(5000, 6000); 2260 2261 ret_val = igb_get_auto_rd_done(hw); 2262 if (ret_val) { 2263 /* When auto config read does not complete, do not 2264 * return with an error. This can happen in situations 2265 * where there is no eeprom and prevents getting link. 2266 */ 2267 hw_dbg("Auto Read Done did not complete\n"); 2268 } 2269 2270 /* clear global device reset status bit */ 2271 wr32(E1000_STATUS, E1000_STAT_DEV_RST_SET); 2272 2273 /* Clear any pending interrupt events. */ 2274 wr32(E1000_IMC, 0xffffffff); 2275 rd32(E1000_ICR); 2276 2277 ret_val = igb_reset_mdicnfg_82580(hw); 2278 if (ret_val) 2279 hw_dbg("Could not reset MDICNFG based on EEPROM\n"); 2280 2281 /* Install any alternate MAC address into RAR0 */ 2282 ret_val = igb_check_alt_mac_addr(hw); 2283 2284 /* Release semaphore */ 2285 if (global_device_reset) 2286 hw->mac.ops.release_swfw_sync(hw, swmbsw_mask); 2287 2288 return ret_val; 2289} 2290 2291/** 2292 * igb_rxpbs_adjust_82580 - adjust RXPBS value to reflect actual RX PBA size 2293 * @data: data received by reading RXPBS register 2294 * 2295 * The 82580 uses a table based approach for packet buffer allocation sizes. 2296 * This function converts the retrieved value into the correct table value 2297 * 0x0 0x1 0x2 0x3 0x4 0x5 0x6 0x7 2298 * 0x0 36 72 144 1 2 4 8 16 2299 * 0x8 35 70 140 rsv rsv rsv rsv rsv 2300 */ 2301u16 igb_rxpbs_adjust_82580(u32 data) 2302{ 2303 u16 ret_val = 0; 2304 2305 if (data < ARRAY_SIZE(e1000_82580_rxpbs_table)) 2306 ret_val = e1000_82580_rxpbs_table[data]; 2307 2308 return ret_val; 2309} 2310 2311/** 2312 * igb_validate_nvm_checksum_with_offset - Validate EEPROM 2313 * checksum 2314 * @hw: pointer to the HW structure 2315 * @offset: offset in words of the checksum protected region 2316 * 2317 * Calculates the EEPROM checksum by reading/adding each word of the EEPROM 2318 * and then verifies that the sum of the EEPROM is equal to 0xBABA. 2319 **/ 2320static s32 igb_validate_nvm_checksum_with_offset(struct e1000_hw *hw, 2321 u16 offset) 2322{ 2323 s32 ret_val = 0; 2324 u16 checksum = 0; 2325 u16 i, nvm_data; 2326 2327 for (i = offset; i < ((NVM_CHECKSUM_REG + offset) + 1); i++) { 2328 ret_val = hw->nvm.ops.read(hw, i, 1, &nvm_data); 2329 if (ret_val) { 2330 hw_dbg("NVM Read Error\n"); 2331 goto out; 2332 } 2333 checksum += nvm_data; 2334 } 2335 2336 if (checksum != (u16) NVM_SUM) { 2337 hw_dbg("NVM Checksum Invalid\n"); 2338 ret_val = -E1000_ERR_NVM; 2339 goto out; 2340 } 2341 2342out: 2343 return ret_val; 2344} 2345 2346/** 2347 * igb_update_nvm_checksum_with_offset - Update EEPROM 2348 * checksum 2349 * @hw: pointer to the HW structure 2350 * @offset: offset in words of the checksum protected region 2351 * 2352 * Updates the EEPROM checksum by reading/adding each word of the EEPROM 2353 * up to the checksum. Then calculates the EEPROM checksum and writes the 2354 * value to the EEPROM. 2355 **/ 2356static s32 igb_update_nvm_checksum_with_offset(struct e1000_hw *hw, u16 offset) 2357{ 2358 s32 ret_val; 2359 u16 checksum = 0; 2360 u16 i, nvm_data; 2361 2362 for (i = offset; i < (NVM_CHECKSUM_REG + offset); i++) { 2363 ret_val = hw->nvm.ops.read(hw, i, 1, &nvm_data); 2364 if (ret_val) { 2365 hw_dbg("NVM Read Error while updating checksum.\n"); 2366 goto out; 2367 } 2368 checksum += nvm_data; 2369 } 2370 checksum = (u16) NVM_SUM - checksum; 2371 ret_val = hw->nvm.ops.write(hw, (NVM_CHECKSUM_REG + offset), 1, 2372 &checksum); 2373 if (ret_val) 2374 hw_dbg("NVM Write Error while updating checksum.\n"); 2375 2376out: 2377 return ret_val; 2378} 2379 2380/** 2381 * igb_validate_nvm_checksum_82580 - Validate EEPROM checksum 2382 * @hw: pointer to the HW structure 2383 * 2384 * Calculates the EEPROM section checksum by reading/adding each word of 2385 * the EEPROM and then verifies that the sum of the EEPROM is 2386 * equal to 0xBABA. 2387 **/ 2388static s32 igb_validate_nvm_checksum_82580(struct e1000_hw *hw) 2389{ 2390 s32 ret_val = 0; 2391 u16 eeprom_regions_count = 1; 2392 u16 j, nvm_data; 2393 u16 nvm_offset; 2394 2395 ret_val = hw->nvm.ops.read(hw, NVM_COMPATIBILITY_REG_3, 1, &nvm_data); 2396 if (ret_val) { 2397 hw_dbg("NVM Read Error\n"); 2398 goto out; 2399 } 2400 2401 if (nvm_data & NVM_COMPATIBILITY_BIT_MASK) { 2402 /* if checksums compatibility bit is set validate checksums 2403 * for all 4 ports. 2404 */ 2405 eeprom_regions_count = 4; 2406 } 2407 2408 for (j = 0; j < eeprom_regions_count; j++) { 2409 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j); 2410 ret_val = igb_validate_nvm_checksum_with_offset(hw, 2411 nvm_offset); 2412 if (ret_val != 0) 2413 goto out; 2414 } 2415 2416out: 2417 return ret_val; 2418} 2419 2420/** 2421 * igb_update_nvm_checksum_82580 - Update EEPROM checksum 2422 * @hw: pointer to the HW structure 2423 * 2424 * Updates the EEPROM section checksums for all 4 ports by reading/adding 2425 * each word of the EEPROM up to the checksum. Then calculates the EEPROM 2426 * checksum and writes the value to the EEPROM. 2427 **/ 2428static s32 igb_update_nvm_checksum_82580(struct e1000_hw *hw) 2429{ 2430 s32 ret_val; 2431 u16 j, nvm_data; 2432 u16 nvm_offset; 2433 2434 ret_val = hw->nvm.ops.read(hw, NVM_COMPATIBILITY_REG_3, 1, &nvm_data); 2435 if (ret_val) { 2436 hw_dbg("NVM Read Error while updating checksum compatibility bit.\n"); 2437 goto out; 2438 } 2439 2440 if ((nvm_data & NVM_COMPATIBILITY_BIT_MASK) == 0) { 2441 /* set compatibility bit to validate checksums appropriately */ 2442 nvm_data = nvm_data | NVM_COMPATIBILITY_BIT_MASK; 2443 ret_val = hw->nvm.ops.write(hw, NVM_COMPATIBILITY_REG_3, 1, 2444 &nvm_data); 2445 if (ret_val) { 2446 hw_dbg("NVM Write Error while updating checksum compatibility bit.\n"); 2447 goto out; 2448 } 2449 } 2450 2451 for (j = 0; j < 4; j++) { 2452 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j); 2453 ret_val = igb_update_nvm_checksum_with_offset(hw, nvm_offset); 2454 if (ret_val) 2455 goto out; 2456 } 2457 2458out: 2459 return ret_val; 2460} 2461 2462/** 2463 * igb_validate_nvm_checksum_i350 - Validate EEPROM checksum 2464 * @hw: pointer to the HW structure 2465 * 2466 * Calculates the EEPROM section checksum by reading/adding each word of 2467 * the EEPROM and then verifies that the sum of the EEPROM is 2468 * equal to 0xBABA. 2469 **/ 2470static s32 igb_validate_nvm_checksum_i350(struct e1000_hw *hw) 2471{ 2472 s32 ret_val = 0; 2473 u16 j; 2474 u16 nvm_offset; 2475 2476 for (j = 0; j < 4; j++) { 2477 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j); 2478 ret_val = igb_validate_nvm_checksum_with_offset(hw, 2479 nvm_offset); 2480 if (ret_val != 0) 2481 goto out; 2482 } 2483 2484out: 2485 return ret_val; 2486} 2487 2488/** 2489 * igb_update_nvm_checksum_i350 - Update EEPROM checksum 2490 * @hw: pointer to the HW structure 2491 * 2492 * Updates the EEPROM section checksums for all 4 ports by reading/adding 2493 * each word of the EEPROM up to the checksum. Then calculates the EEPROM 2494 * checksum and writes the value to the EEPROM. 2495 **/ 2496static s32 igb_update_nvm_checksum_i350(struct e1000_hw *hw) 2497{ 2498 s32 ret_val = 0; 2499 u16 j; 2500 u16 nvm_offset; 2501 2502 for (j = 0; j < 4; j++) { 2503 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j); 2504 ret_val = igb_update_nvm_checksum_with_offset(hw, nvm_offset); 2505 if (ret_val != 0) 2506 goto out; 2507 } 2508 2509out: 2510 return ret_val; 2511} 2512 2513/** 2514 * __igb_access_emi_reg - Read/write EMI register 2515 * @hw: pointer to the HW structure 2516 * @addr: EMI address to program 2517 * @data: pointer to value to read/write from/to the EMI address 2518 * @read: boolean flag to indicate read or write 2519 **/ 2520static s32 __igb_access_emi_reg(struct e1000_hw *hw, u16 address, 2521 u16 *data, bool read) 2522{ 2523 s32 ret_val = 0; 2524 2525 ret_val = hw->phy.ops.write_reg(hw, E1000_EMIADD, address); 2526 if (ret_val) 2527 return ret_val; 2528 2529 if (read) 2530 ret_val = hw->phy.ops.read_reg(hw, E1000_EMIDATA, data); 2531 else 2532 ret_val = hw->phy.ops.write_reg(hw, E1000_EMIDATA, *data); 2533 2534 return ret_val; 2535} 2536 2537/** 2538 * igb_read_emi_reg - Read Extended Management Interface register 2539 * @hw: pointer to the HW structure 2540 * @addr: EMI address to program 2541 * @data: value to be read from the EMI address 2542 **/ 2543s32 igb_read_emi_reg(struct e1000_hw *hw, u16 addr, u16 *data) 2544{ 2545 return __igb_access_emi_reg(hw, addr, data, true); 2546} 2547 2548/** 2549 * igb_set_eee_i350 - Enable/disable EEE support 2550 * @hw: pointer to the HW structure 2551 * @adv1G: boolean flag enabling 1G EEE advertisement 2552 * @adv100m: boolean flag enabling 100M EEE advertisement 2553 * 2554 * Enable/disable EEE based on setting in dev_spec structure. 2555 * 2556 **/ 2557s32 igb_set_eee_i350(struct e1000_hw *hw, bool adv1G, bool adv100M) 2558{ 2559 u32 ipcnfg, eeer; 2560 2561 if ((hw->mac.type < e1000_i350) || 2562 (hw->phy.media_type != e1000_media_type_copper)) 2563 goto out; 2564 ipcnfg = rd32(E1000_IPCNFG); 2565 eeer = rd32(E1000_EEER); 2566 2567 /* enable or disable per user setting */ 2568 if (!(hw->dev_spec._82575.eee_disable)) { 2569 u32 eee_su = rd32(E1000_EEE_SU); 2570 2571 if (adv100M) 2572 ipcnfg |= E1000_IPCNFG_EEE_100M_AN; 2573 else 2574 ipcnfg &= ~E1000_IPCNFG_EEE_100M_AN; 2575 2576 if (adv1G) 2577 ipcnfg |= E1000_IPCNFG_EEE_1G_AN; 2578 else 2579 ipcnfg &= ~E1000_IPCNFG_EEE_1G_AN; 2580 2581 eeer |= (E1000_EEER_TX_LPI_EN | E1000_EEER_RX_LPI_EN | 2582 E1000_EEER_LPI_FC); 2583 2584 /* This bit should not be set in normal operation. */ 2585 if (eee_su & E1000_EEE_SU_LPI_CLK_STP) 2586 hw_dbg("LPI Clock Stop Bit should not be set!\n"); 2587 2588 } else { 2589 ipcnfg &= ~(E1000_IPCNFG_EEE_1G_AN | 2590 E1000_IPCNFG_EEE_100M_AN); 2591 eeer &= ~(E1000_EEER_TX_LPI_EN | 2592 E1000_EEER_RX_LPI_EN | 2593 E1000_EEER_LPI_FC); 2594 } 2595 wr32(E1000_IPCNFG, ipcnfg); 2596 wr32(E1000_EEER, eeer); 2597 rd32(E1000_IPCNFG); 2598 rd32(E1000_EEER); 2599out: 2600 2601 return 0; 2602} 2603 2604/** 2605 * igb_set_eee_i354 - Enable/disable EEE support 2606 * @hw: pointer to the HW structure 2607 * @adv1G: boolean flag enabling 1G EEE advertisement 2608 * @adv100m: boolean flag enabling 100M EEE advertisement 2609 * 2610 * Enable/disable EEE legacy mode based on setting in dev_spec structure. 2611 * 2612 **/ 2613s32 igb_set_eee_i354(struct e1000_hw *hw, bool adv1G, bool adv100M) 2614{ 2615 struct e1000_phy_info *phy = &hw->phy; 2616 s32 ret_val = 0; 2617 u16 phy_data; 2618 2619 if ((hw->phy.media_type != e1000_media_type_copper) || 2620 (phy->id != M88E1543_E_PHY_ID)) 2621 goto out; 2622 2623 if (!hw->dev_spec._82575.eee_disable) { 2624 /* Switch to PHY page 18. */ 2625 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_PAGE_ADDR, 18); 2626 if (ret_val) 2627 goto out; 2628 2629 ret_val = phy->ops.read_reg(hw, E1000_M88E1543_EEE_CTRL_1, 2630 &phy_data); 2631 if (ret_val) 2632 goto out; 2633 2634 phy_data |= E1000_M88E1543_EEE_CTRL_1_MS; 2635 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_EEE_CTRL_1, 2636 phy_data); 2637 if (ret_val) 2638 goto out; 2639 2640 /* Return the PHY to page 0. */ 2641 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_PAGE_ADDR, 0); 2642 if (ret_val) 2643 goto out; 2644 2645 /* Turn on EEE advertisement. */ 2646 ret_val = igb_read_xmdio_reg(hw, E1000_EEE_ADV_ADDR_I354, 2647 E1000_EEE_ADV_DEV_I354, 2648 &phy_data); 2649 if (ret_val) 2650 goto out; 2651 2652 if (adv100M) 2653 phy_data |= E1000_EEE_ADV_100_SUPPORTED; 2654 else 2655 phy_data &= ~E1000_EEE_ADV_100_SUPPORTED; 2656 2657 if (adv1G) 2658 phy_data |= E1000_EEE_ADV_1000_SUPPORTED; 2659 else 2660 phy_data &= ~E1000_EEE_ADV_1000_SUPPORTED; 2661 2662 ret_val = igb_write_xmdio_reg(hw, E1000_EEE_ADV_ADDR_I354, 2663 E1000_EEE_ADV_DEV_I354, 2664 phy_data); 2665 } else { 2666 /* Turn off EEE advertisement. */ 2667 ret_val = igb_read_xmdio_reg(hw, E1000_EEE_ADV_ADDR_I354, 2668 E1000_EEE_ADV_DEV_I354, 2669 &phy_data); 2670 if (ret_val) 2671 goto out; 2672 2673 phy_data &= ~(E1000_EEE_ADV_100_SUPPORTED | 2674 E1000_EEE_ADV_1000_SUPPORTED); 2675 ret_val = igb_write_xmdio_reg(hw, E1000_EEE_ADV_ADDR_I354, 2676 E1000_EEE_ADV_DEV_I354, 2677 phy_data); 2678 } 2679 2680out: 2681 return ret_val; 2682} 2683 2684/** 2685 * igb_get_eee_status_i354 - Get EEE status 2686 * @hw: pointer to the HW structure 2687 * @status: EEE status 2688 * 2689 * Get EEE status by guessing based on whether Tx or Rx LPI indications have 2690 * been received. 2691 **/ 2692s32 igb_get_eee_status_i354(struct e1000_hw *hw, bool *status) 2693{ 2694 struct e1000_phy_info *phy = &hw->phy; 2695 s32 ret_val = 0; 2696 u16 phy_data; 2697 2698 /* Check if EEE is supported on this device. */ 2699 if ((hw->phy.media_type != e1000_media_type_copper) || 2700 (phy->id != M88E1543_E_PHY_ID)) 2701 goto out; 2702 2703 ret_val = igb_read_xmdio_reg(hw, E1000_PCS_STATUS_ADDR_I354, 2704 E1000_PCS_STATUS_DEV_I354, 2705 &phy_data); 2706 if (ret_val) 2707 goto out; 2708 2709 *status = phy_data & (E1000_PCS_STATUS_TX_LPI_RCVD | 2710 E1000_PCS_STATUS_RX_LPI_RCVD) ? true : false; 2711 2712out: 2713 return ret_val; 2714} 2715 2716static const u8 e1000_emc_temp_data[4] = { 2717 E1000_EMC_INTERNAL_DATA, 2718 E1000_EMC_DIODE1_DATA, 2719 E1000_EMC_DIODE2_DATA, 2720 E1000_EMC_DIODE3_DATA 2721}; 2722static const u8 e1000_emc_therm_limit[4] = { 2723 E1000_EMC_INTERNAL_THERM_LIMIT, 2724 E1000_EMC_DIODE1_THERM_LIMIT, 2725 E1000_EMC_DIODE2_THERM_LIMIT, 2726 E1000_EMC_DIODE3_THERM_LIMIT 2727}; 2728 2729#ifdef CONFIG_IGB_HWMON 2730/** 2731 * igb_get_thermal_sensor_data_generic - Gathers thermal sensor data 2732 * @hw: pointer to hardware structure 2733 * 2734 * Updates the temperatures in mac.thermal_sensor_data 2735 **/ 2736static s32 igb_get_thermal_sensor_data_generic(struct e1000_hw *hw) 2737{ 2738 u16 ets_offset; 2739 u16 ets_cfg; 2740 u16 ets_sensor; 2741 u8 num_sensors; 2742 u8 sensor_index; 2743 u8 sensor_location; 2744 u8 i; 2745 struct e1000_thermal_sensor_data *data = &hw->mac.thermal_sensor_data; 2746 2747 if ((hw->mac.type != e1000_i350) || (hw->bus.func != 0)) 2748 return E1000_NOT_IMPLEMENTED; 2749 2750 data->sensor[0].temp = (rd32(E1000_THMJT) & 0xFF); 2751 2752 /* Return the internal sensor only if ETS is unsupported */ 2753 hw->nvm.ops.read(hw, NVM_ETS_CFG, 1, &ets_offset); 2754 if ((ets_offset == 0x0000) || (ets_offset == 0xFFFF)) 2755 return 0; 2756 2757 hw->nvm.ops.read(hw, ets_offset, 1, &ets_cfg); 2758 if (((ets_cfg & NVM_ETS_TYPE_MASK) >> NVM_ETS_TYPE_SHIFT) 2759 != NVM_ETS_TYPE_EMC) 2760 return E1000_NOT_IMPLEMENTED; 2761 2762 num_sensors = (ets_cfg & NVM_ETS_NUM_SENSORS_MASK); 2763 if (num_sensors > E1000_MAX_SENSORS) 2764 num_sensors = E1000_MAX_SENSORS; 2765 2766 for (i = 1; i < num_sensors; i++) { 2767 hw->nvm.ops.read(hw, (ets_offset + i), 1, &ets_sensor); 2768 sensor_index = ((ets_sensor & NVM_ETS_DATA_INDEX_MASK) >> 2769 NVM_ETS_DATA_INDEX_SHIFT); 2770 sensor_location = ((ets_sensor & NVM_ETS_DATA_LOC_MASK) >> 2771 NVM_ETS_DATA_LOC_SHIFT); 2772 2773 if (sensor_location != 0) 2774 hw->phy.ops.read_i2c_byte(hw, 2775 e1000_emc_temp_data[sensor_index], 2776 E1000_I2C_THERMAL_SENSOR_ADDR, 2777 &data->sensor[i].temp); 2778 } 2779 return 0; 2780} 2781 2782/** 2783 * igb_init_thermal_sensor_thresh_generic - Sets thermal sensor thresholds 2784 * @hw: pointer to hardware structure 2785 * 2786 * Sets the thermal sensor thresholds according to the NVM map 2787 * and save off the threshold and location values into mac.thermal_sensor_data 2788 **/ 2789static s32 igb_init_thermal_sensor_thresh_generic(struct e1000_hw *hw) 2790{ 2791 u16 ets_offset; 2792 u16 ets_cfg; 2793 u16 ets_sensor; 2794 u8 low_thresh_delta; 2795 u8 num_sensors; 2796 u8 sensor_index; 2797 u8 sensor_location; 2798 u8 therm_limit; 2799 u8 i; 2800 struct e1000_thermal_sensor_data *data = &hw->mac.thermal_sensor_data; 2801 2802 if ((hw->mac.type != e1000_i350) || (hw->bus.func != 0)) 2803 return E1000_NOT_IMPLEMENTED; 2804 2805 memset(data, 0, sizeof(struct e1000_thermal_sensor_data)); 2806 2807 data->sensor[0].location = 0x1; 2808 data->sensor[0].caution_thresh = 2809 (rd32(E1000_THHIGHTC) & 0xFF); 2810 data->sensor[0].max_op_thresh = 2811 (rd32(E1000_THLOWTC) & 0xFF); 2812 2813 /* Return the internal sensor only if ETS is unsupported */ 2814 hw->nvm.ops.read(hw, NVM_ETS_CFG, 1, &ets_offset); 2815 if ((ets_offset == 0x0000) || (ets_offset == 0xFFFF)) 2816 return 0; 2817 2818 hw->nvm.ops.read(hw, ets_offset, 1, &ets_cfg); 2819 if (((ets_cfg & NVM_ETS_TYPE_MASK) >> NVM_ETS_TYPE_SHIFT) 2820 != NVM_ETS_TYPE_EMC) 2821 return E1000_NOT_IMPLEMENTED; 2822 2823 low_thresh_delta = ((ets_cfg & NVM_ETS_LTHRES_DELTA_MASK) >> 2824 NVM_ETS_LTHRES_DELTA_SHIFT); 2825 num_sensors = (ets_cfg & NVM_ETS_NUM_SENSORS_MASK); 2826 2827 for (i = 1; i <= num_sensors; i++) { 2828 hw->nvm.ops.read(hw, (ets_offset + i), 1, &ets_sensor); 2829 sensor_index = ((ets_sensor & NVM_ETS_DATA_INDEX_MASK) >> 2830 NVM_ETS_DATA_INDEX_SHIFT); 2831 sensor_location = ((ets_sensor & NVM_ETS_DATA_LOC_MASK) >> 2832 NVM_ETS_DATA_LOC_SHIFT); 2833 therm_limit = ets_sensor & NVM_ETS_DATA_HTHRESH_MASK; 2834 2835 hw->phy.ops.write_i2c_byte(hw, 2836 e1000_emc_therm_limit[sensor_index], 2837 E1000_I2C_THERMAL_SENSOR_ADDR, 2838 therm_limit); 2839 2840 if ((i < E1000_MAX_SENSORS) && (sensor_location != 0)) { 2841 data->sensor[i].location = sensor_location; 2842 data->sensor[i].caution_thresh = therm_limit; 2843 data->sensor[i].max_op_thresh = therm_limit - 2844 low_thresh_delta; 2845 } 2846 } 2847 return 0; 2848} 2849 2850#endif 2851static struct e1000_mac_operations e1000_mac_ops_82575 = { 2852 .init_hw = igb_init_hw_82575, 2853 .check_for_link = igb_check_for_link_82575, 2854 .rar_set = igb_rar_set, 2855 .read_mac_addr = igb_read_mac_addr_82575, 2856 .get_speed_and_duplex = igb_get_link_up_info_82575, 2857#ifdef CONFIG_IGB_HWMON 2858 .get_thermal_sensor_data = igb_get_thermal_sensor_data_generic, 2859 .init_thermal_sensor_thresh = igb_init_thermal_sensor_thresh_generic, 2860#endif 2861}; 2862 2863static struct e1000_phy_operations e1000_phy_ops_82575 = { 2864 .acquire = igb_acquire_phy_82575, 2865 .get_cfg_done = igb_get_cfg_done_82575, 2866 .release = igb_release_phy_82575, 2867 .write_i2c_byte = igb_write_i2c_byte, 2868 .read_i2c_byte = igb_read_i2c_byte, 2869}; 2870 2871static struct e1000_nvm_operations e1000_nvm_ops_82575 = { 2872 .acquire = igb_acquire_nvm_82575, 2873 .read = igb_read_nvm_eerd, 2874 .release = igb_release_nvm_82575, 2875 .write = igb_write_nvm_spi, 2876}; 2877 2878const struct e1000_info e1000_82575_info = { 2879 .get_invariants = igb_get_invariants_82575, 2880 .mac_ops = &e1000_mac_ops_82575, 2881 .phy_ops = &e1000_phy_ops_82575, 2882 .nvm_ops = &e1000_nvm_ops_82575, 2883}; 2884 2885