e1000_82575.c revision 229461
1/****************************************************************************** 2 3 Copyright (c) 2001-2010, Intel Corporation 4 All rights reserved. 5 6 Redistribution and use in source and binary forms, with or without 7 modification, are permitted provided that the following conditions are met: 8 9 1. Redistributions of source code must retain the above copyright notice, 10 this list of conditions and the following disclaimer. 11 12 2. Redistributions in binary form must reproduce the above copyright 13 notice, this list of conditions and the following disclaimer in the 14 documentation and/or other materials provided with the distribution. 15 16 3. Neither the name of the Intel Corporation nor the names of its 17 contributors may be used to endorse or promote products derived from 18 this software without specific prior written permission. 19 20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 POSSIBILITY OF SUCH DAMAGE. 31 32******************************************************************************/ 33/*$FreeBSD: stable/9/sys/dev/e1000/e1000_82575.c 229461 2012-01-04 03:37:41Z eadler $*/ 34 35/* 36 * 82575EB Gigabit Network Connection 37 * 82575EB Gigabit Backplane Connection 38 * 82575GB Gigabit Network Connection 39 * 82576 Gigabit Network Connection 40 * 82576 Quad Port Gigabit Mezzanine Adapter 41 */ 42 43#include "e1000_api.h" 44 45static s32 e1000_init_phy_params_82575(struct e1000_hw *hw); 46static s32 e1000_init_mac_params_82575(struct e1000_hw *hw); 47static s32 e1000_acquire_phy_82575(struct e1000_hw *hw); 48static void e1000_release_phy_82575(struct e1000_hw *hw); 49static s32 e1000_acquire_nvm_82575(struct e1000_hw *hw); 50static void e1000_release_nvm_82575(struct e1000_hw *hw); 51static s32 e1000_check_for_link_82575(struct e1000_hw *hw); 52static s32 e1000_get_cfg_done_82575(struct e1000_hw *hw); 53static s32 e1000_get_link_up_info_82575(struct e1000_hw *hw, u16 *speed, 54 u16 *duplex); 55static s32 e1000_init_hw_82575(struct e1000_hw *hw); 56static s32 e1000_phy_hw_reset_sgmii_82575(struct e1000_hw *hw); 57static s32 e1000_read_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset, 58 u16 *data); 59static s32 e1000_reset_hw_82575(struct e1000_hw *hw); 60static s32 e1000_reset_hw_82580(struct e1000_hw *hw); 61static s32 e1000_read_phy_reg_82580(struct e1000_hw *hw, 62 u32 offset, u16 *data); 63static s32 e1000_write_phy_reg_82580(struct e1000_hw *hw, 64 u32 offset, u16 data); 65static s32 e1000_set_d0_lplu_state_82580(struct e1000_hw *hw, 66 bool active); 67static s32 e1000_set_d3_lplu_state_82580(struct e1000_hw *hw, 68 bool active); 69static s32 e1000_set_d0_lplu_state_82575(struct e1000_hw *hw, 70 bool active); 71static s32 e1000_setup_copper_link_82575(struct e1000_hw *hw); 72static s32 e1000_setup_serdes_link_82575(struct e1000_hw *hw); 73static s32 e1000_valid_led_default_82575(struct e1000_hw *hw, u16 *data); 74static s32 e1000_write_phy_reg_sgmii_82575(struct e1000_hw *hw, 75 u32 offset, u16 data); 76static void e1000_clear_hw_cntrs_82575(struct e1000_hw *hw); 77static s32 e1000_acquire_swfw_sync_82575(struct e1000_hw *hw, u16 mask); 78static s32 e1000_get_pcs_speed_and_duplex_82575(struct e1000_hw *hw, 79 u16 *speed, u16 *duplex); 80static s32 e1000_get_phy_id_82575(struct e1000_hw *hw); 81static void e1000_release_swfw_sync_82575(struct e1000_hw *hw, u16 mask); 82static bool e1000_sgmii_active_82575(struct e1000_hw *hw); 83static s32 e1000_reset_init_script_82575(struct e1000_hw *hw); 84static s32 e1000_read_mac_addr_82575(struct e1000_hw *hw); 85static void e1000_config_collision_dist_82575(struct e1000_hw *hw); 86static void e1000_power_down_phy_copper_82575(struct e1000_hw *hw); 87static void e1000_shutdown_serdes_link_82575(struct e1000_hw *hw); 88static void e1000_power_up_serdes_link_82575(struct e1000_hw *hw); 89static s32 e1000_set_pcie_completion_timeout(struct e1000_hw *hw); 90static s32 e1000_reset_mdicnfg_82580(struct e1000_hw *hw); 91static s32 e1000_validate_nvm_checksum_82580(struct e1000_hw *hw); 92static s32 e1000_update_nvm_checksum_82580(struct e1000_hw *hw); 93static s32 e1000_update_nvm_checksum_with_offset(struct e1000_hw *hw, 94 u16 offset); 95static s32 e1000_validate_nvm_checksum_with_offset(struct e1000_hw *hw, 96 u16 offset); 97static s32 e1000_validate_nvm_checksum_i350(struct e1000_hw *hw); 98static s32 e1000_update_nvm_checksum_i350(struct e1000_hw *hw); 99 100static const u16 e1000_82580_rxpbs_table[] = 101 { 36, 72, 144, 1, 2, 4, 8, 16, 102 35, 70, 140 }; 103#define E1000_82580_RXPBS_TABLE_SIZE \ 104 (sizeof(e1000_82580_rxpbs_table)/sizeof(u16)) 105 106 107/** 108 * e1000_sgmii_uses_mdio_82575 - Determine if I2C pins are for external MDIO 109 * @hw: pointer to the HW structure 110 * 111 * Called to determine if the I2C pins are being used for I2C or as an 112 * external MDIO interface since the two options are mutually exclusive. 113 **/ 114static bool e1000_sgmii_uses_mdio_82575(struct e1000_hw *hw) 115{ 116 u32 reg = 0; 117 bool ext_mdio = FALSE; 118 119 DEBUGFUNC("e1000_sgmii_uses_mdio_82575"); 120 121 switch (hw->mac.type) { 122 case e1000_82575: 123 case e1000_82576: 124 reg = E1000_READ_REG(hw, E1000_MDIC); 125 ext_mdio = !!(reg & E1000_MDIC_DEST); 126 break; 127 case e1000_82580: 128 case e1000_i350: 129 reg = E1000_READ_REG(hw, E1000_MDICNFG); 130 ext_mdio = !!(reg & E1000_MDICNFG_EXT_MDIO); 131 break; 132 default: 133 break; 134 } 135 return ext_mdio; 136} 137 138/** 139 * e1000_init_phy_params_82575 - Init PHY func ptrs. 140 * @hw: pointer to the HW structure 141 **/ 142static s32 e1000_init_phy_params_82575(struct e1000_hw *hw) 143{ 144 struct e1000_phy_info *phy = &hw->phy; 145 s32 ret_val = E1000_SUCCESS; 146 u32 ctrl_ext; 147 148 DEBUGFUNC("e1000_init_phy_params_82575"); 149 150 if (hw->phy.media_type != e1000_media_type_copper) { 151 phy->type = e1000_phy_none; 152 goto out; 153 } 154 155 phy->ops.power_up = e1000_power_up_phy_copper; 156 phy->ops.power_down = e1000_power_down_phy_copper_82575; 157 158 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT; 159 phy->reset_delay_us = 100; 160 161 phy->ops.acquire = e1000_acquire_phy_82575; 162 phy->ops.check_reset_block = e1000_check_reset_block_generic; 163 phy->ops.commit = e1000_phy_sw_reset_generic; 164 phy->ops.get_cfg_done = e1000_get_cfg_done_82575; 165 phy->ops.release = e1000_release_phy_82575; 166 167 ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT); 168 169 if (e1000_sgmii_active_82575(hw)) { 170 phy->ops.reset = e1000_phy_hw_reset_sgmii_82575; 171 ctrl_ext |= E1000_CTRL_I2C_ENA; 172 } else { 173 phy->ops.reset = e1000_phy_hw_reset_generic; 174 ctrl_ext &= ~E1000_CTRL_I2C_ENA; 175 } 176 177 E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext); 178 e1000_reset_mdicnfg_82580(hw); 179 180 if (e1000_sgmii_active_82575(hw) && !e1000_sgmii_uses_mdio_82575(hw)) { 181 phy->ops.read_reg = e1000_read_phy_reg_sgmii_82575; 182 phy->ops.write_reg = e1000_write_phy_reg_sgmii_82575; 183 } else if (hw->mac.type >= e1000_82580) { 184 phy->ops.read_reg = e1000_read_phy_reg_82580; 185 phy->ops.write_reg = e1000_write_phy_reg_82580; 186 } else { 187 phy->ops.read_reg = e1000_read_phy_reg_igp; 188 phy->ops.write_reg = e1000_write_phy_reg_igp; 189 } 190 191 /* Set phy->phy_addr and phy->id. */ 192 ret_val = e1000_get_phy_id_82575(hw); 193 194 /* Verify phy id and set remaining function pointers */ 195 switch (phy->id) { 196 case I347AT4_E_PHY_ID: 197 case M88E1112_E_PHY_ID: 198 case M88E1340M_E_PHY_ID: 199 case M88E1111_I_PHY_ID: 200 phy->type = e1000_phy_m88; 201 phy->ops.check_polarity = e1000_check_polarity_m88; 202 phy->ops.get_info = e1000_get_phy_info_m88; 203 if (phy->id == I347AT4_E_PHY_ID || 204 phy->id == M88E1112_E_PHY_ID || 205 phy->id == M88E1340M_E_PHY_ID) 206 phy->ops.get_cable_length = e1000_get_cable_length_m88_gen2; 207 else 208 phy->ops.get_cable_length = e1000_get_cable_length_m88; 209 phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_m88; 210 break; 211 case IGP03E1000_E_PHY_ID: 212 case IGP04E1000_E_PHY_ID: 213 phy->type = e1000_phy_igp_3; 214 phy->ops.check_polarity = e1000_check_polarity_igp; 215 phy->ops.get_info = e1000_get_phy_info_igp; 216 phy->ops.get_cable_length = e1000_get_cable_length_igp_2; 217 phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_igp; 218 phy->ops.set_d0_lplu_state = e1000_set_d0_lplu_state_82575; 219 phy->ops.set_d3_lplu_state = e1000_set_d3_lplu_state_generic; 220 break; 221 case I82580_I_PHY_ID: 222 case I350_I_PHY_ID: 223 phy->type = e1000_phy_82580; 224 phy->ops.check_polarity = e1000_check_polarity_82577; 225 phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_82577; 226 phy->ops.get_cable_length = e1000_get_cable_length_82577; 227 phy->ops.get_info = e1000_get_phy_info_82577; 228 phy->ops.set_d0_lplu_state = e1000_set_d0_lplu_state_82580; 229 phy->ops.set_d3_lplu_state = e1000_set_d3_lplu_state_82580; 230 break; 231 default: 232 ret_val = -E1000_ERR_PHY; 233 goto out; 234 } 235 236out: 237 return ret_val; 238} 239 240/** 241 * e1000_init_nvm_params_82575 - Init NVM func ptrs. 242 * @hw: pointer to the HW structure 243 **/ 244s32 e1000_init_nvm_params_82575(struct e1000_hw *hw) 245{ 246 struct e1000_nvm_info *nvm = &hw->nvm; 247 u32 eecd = E1000_READ_REG(hw, E1000_EECD); 248 u16 size; 249 250 DEBUGFUNC("e1000_init_nvm_params_82575"); 251 252 size = (u16)((eecd & E1000_EECD_SIZE_EX_MASK) >> 253 E1000_EECD_SIZE_EX_SHIFT); 254 /* 255 * Added to a constant, "size" becomes the left-shift value 256 * for setting word_size. 257 */ 258 size += NVM_WORD_SIZE_BASE_SHIFT; 259 260 nvm->word_size = 1 << size; 261 nvm->opcode_bits = 8; 262 nvm->delay_usec = 1; 263 switch (nvm->override) { 264 case e1000_nvm_override_spi_large: 265 nvm->page_size = 32; 266 nvm->address_bits = 16; 267 break; 268 case e1000_nvm_override_spi_small: 269 nvm->page_size = 8; 270 nvm->address_bits = 8; 271 break; 272 default: 273 nvm->page_size = eecd & E1000_EECD_ADDR_BITS ? 32 : 8; 274 nvm->address_bits = eecd & E1000_EECD_ADDR_BITS ? 16 : 8; 275 break; 276 } 277 278 nvm->type = e1000_nvm_eeprom_spi; 279 280 if (nvm->word_size == (1 << 15)) 281 nvm->page_size = 128; 282 283 /* Function Pointers */ 284 nvm->ops.acquire = e1000_acquire_nvm_82575; 285 nvm->ops.release = e1000_release_nvm_82575; 286 if (nvm->word_size < (1 << 15)) 287 nvm->ops.read = e1000_read_nvm_eerd; 288 else 289 nvm->ops.read = e1000_read_nvm_spi; 290 291 nvm->ops.write = e1000_write_nvm_spi; 292 nvm->ops.validate = e1000_validate_nvm_checksum_generic; 293 nvm->ops.update = e1000_update_nvm_checksum_generic; 294 nvm->ops.valid_led_default = e1000_valid_led_default_82575; 295 296 /* override genric family function pointers for specific descendants */ 297 switch (hw->mac.type) { 298 case e1000_82580: 299 nvm->ops.validate = e1000_validate_nvm_checksum_82580; 300 nvm->ops.update = e1000_update_nvm_checksum_82580; 301 break; 302 case e1000_i350: 303 nvm->ops.validate = e1000_validate_nvm_checksum_i350; 304 nvm->ops.update = e1000_update_nvm_checksum_i350; 305 break; 306 default: 307 break; 308 } 309 310 return E1000_SUCCESS; 311} 312 313/** 314 * e1000_init_mac_params_82575 - Init MAC func ptrs. 315 * @hw: pointer to the HW structure 316 **/ 317static s32 e1000_init_mac_params_82575(struct e1000_hw *hw) 318{ 319 struct e1000_mac_info *mac = &hw->mac; 320 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575; 321 u32 ctrl_ext = 0; 322 323 DEBUGFUNC("e1000_init_mac_params_82575"); 324 325 /* Set media type */ 326 /* 327 * The 82575 uses bits 22:23 for link mode. The mode can be changed 328 * based on the EEPROM. We cannot rely upon device ID. There 329 * is no distinguishable difference between fiber and internal 330 * SerDes mode on the 82575. There can be an external PHY attached 331 * on the SGMII interface. For this, we'll set sgmii_active to TRUE. 332 */ 333 hw->phy.media_type = e1000_media_type_copper; 334 dev_spec->sgmii_active = FALSE; 335 336 ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT); 337 switch (ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK) { 338 case E1000_CTRL_EXT_LINK_MODE_SGMII: 339 dev_spec->sgmii_active = TRUE; 340 break; 341 case E1000_CTRL_EXT_LINK_MODE_1000BASE_KX: 342 case E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES: 343 hw->phy.media_type = e1000_media_type_internal_serdes; 344 break; 345 default: 346 break; 347 } 348 349 /* Set mta register count */ 350 mac->mta_reg_count = 128; 351 /* Set uta register count */ 352 mac->uta_reg_count = (hw->mac.type == e1000_82575) ? 0 : 128; 353 /* Set rar entry count */ 354 mac->rar_entry_count = E1000_RAR_ENTRIES_82575; 355 if (mac->type == e1000_82576) 356 mac->rar_entry_count = E1000_RAR_ENTRIES_82576; 357 if (mac->type == e1000_82580) 358 mac->rar_entry_count = E1000_RAR_ENTRIES_82580; 359 if (mac->type == e1000_i350) { 360 mac->rar_entry_count = E1000_RAR_ENTRIES_I350; 361 /* Enable EEE default settings for i350 */ 362 dev_spec->eee_disable = FALSE; 363 } 364 365 /* Set if part includes ASF firmware */ 366 mac->asf_firmware_present = TRUE; 367 /* FWSM register */ 368 mac->has_fwsm = TRUE; 369 /* ARC supported; valid only if manageability features are enabled. */ 370 mac->arc_subsystem_valid = 371 (E1000_READ_REG(hw, E1000_FWSM) & E1000_FWSM_MODE_MASK) 372 ? TRUE : FALSE; 373 374 /* Function pointers */ 375 376 /* bus type/speed/width */ 377 mac->ops.get_bus_info = e1000_get_bus_info_pcie_generic; 378 /* reset */ 379 if (mac->type >= e1000_82580) 380 mac->ops.reset_hw = e1000_reset_hw_82580; 381 else 382 mac->ops.reset_hw = e1000_reset_hw_82575; 383 /* hw initialization */ 384 mac->ops.init_hw = e1000_init_hw_82575; 385 /* link setup */ 386 mac->ops.setup_link = e1000_setup_link_generic; 387 /* physical interface link setup */ 388 mac->ops.setup_physical_interface = 389 (hw->phy.media_type == e1000_media_type_copper) 390 ? e1000_setup_copper_link_82575 391 : e1000_setup_serdes_link_82575; 392 /* physical interface shutdown */ 393 mac->ops.shutdown_serdes = e1000_shutdown_serdes_link_82575; 394 /* physical interface power up */ 395 mac->ops.power_up_serdes = e1000_power_up_serdes_link_82575; 396 /* check for link */ 397 mac->ops.check_for_link = e1000_check_for_link_82575; 398 /* receive address register setting */ 399 mac->ops.rar_set = e1000_rar_set_generic; 400 /* read mac address */ 401 mac->ops.read_mac_addr = e1000_read_mac_addr_82575; 402 /* configure collision distance */ 403 mac->ops.config_collision_dist = e1000_config_collision_dist_82575; 404 /* multicast address update */ 405 mac->ops.update_mc_addr_list = e1000_update_mc_addr_list_generic; 406 /* writing VFTA */ 407 mac->ops.write_vfta = e1000_write_vfta_generic; 408 /* clearing VFTA */ 409 mac->ops.clear_vfta = e1000_clear_vfta_generic; 410 /* ID LED init */ 411 mac->ops.id_led_init = e1000_id_led_init_generic; 412 /* blink LED */ 413 mac->ops.blink_led = e1000_blink_led_generic; 414 /* setup LED */ 415 mac->ops.setup_led = e1000_setup_led_generic; 416 /* cleanup LED */ 417 mac->ops.cleanup_led = e1000_cleanup_led_generic; 418 /* turn on/off LED */ 419 mac->ops.led_on = e1000_led_on_generic; 420 mac->ops.led_off = e1000_led_off_generic; 421 /* clear hardware counters */ 422 mac->ops.clear_hw_cntrs = e1000_clear_hw_cntrs_82575; 423 /* link info */ 424 mac->ops.get_link_up_info = e1000_get_link_up_info_82575; 425 426 /* set lan id for port to determine which phy lock to use */ 427 hw->mac.ops.set_lan_id(hw); 428 429 return E1000_SUCCESS; 430} 431 432/** 433 * e1000_init_function_pointers_82575 - Init func ptrs. 434 * @hw: pointer to the HW structure 435 * 436 * Called to initialize all function pointers and parameters. 437 **/ 438void e1000_init_function_pointers_82575(struct e1000_hw *hw) 439{ 440 DEBUGFUNC("e1000_init_function_pointers_82575"); 441 442 hw->mac.ops.init_params = e1000_init_mac_params_82575; 443 hw->nvm.ops.init_params = e1000_init_nvm_params_82575; 444 hw->phy.ops.init_params = e1000_init_phy_params_82575; 445 hw->mbx.ops.init_params = e1000_init_mbx_params_pf; 446} 447 448/** 449 * e1000_acquire_phy_82575 - Acquire rights to access PHY 450 * @hw: pointer to the HW structure 451 * 452 * Acquire access rights to the correct PHY. 453 **/ 454static s32 e1000_acquire_phy_82575(struct e1000_hw *hw) 455{ 456 u16 mask = E1000_SWFW_PHY0_SM; 457 458 DEBUGFUNC("e1000_acquire_phy_82575"); 459 460 if (hw->bus.func == E1000_FUNC_1) 461 mask = E1000_SWFW_PHY1_SM; 462 else if (hw->bus.func == E1000_FUNC_2) 463 mask = E1000_SWFW_PHY2_SM; 464 else if (hw->bus.func == E1000_FUNC_3) 465 mask = E1000_SWFW_PHY3_SM; 466 467 return e1000_acquire_swfw_sync_82575(hw, mask); 468} 469 470/** 471 * e1000_release_phy_82575 - Release rights to access PHY 472 * @hw: pointer to the HW structure 473 * 474 * A wrapper to release access rights to the correct PHY. 475 **/ 476static void e1000_release_phy_82575(struct e1000_hw *hw) 477{ 478 u16 mask = E1000_SWFW_PHY0_SM; 479 480 DEBUGFUNC("e1000_release_phy_82575"); 481 482 if (hw->bus.func == E1000_FUNC_1) 483 mask = E1000_SWFW_PHY1_SM; 484 else if (hw->bus.func == E1000_FUNC_2) 485 mask = E1000_SWFW_PHY2_SM; 486 else if (hw->bus.func == E1000_FUNC_3) 487 mask = E1000_SWFW_PHY3_SM; 488 489 e1000_release_swfw_sync_82575(hw, mask); 490} 491 492/** 493 * e1000_read_phy_reg_sgmii_82575 - Read PHY register using sgmii 494 * @hw: pointer to the HW structure 495 * @offset: register offset to be read 496 * @data: pointer to the read data 497 * 498 * Reads the PHY register at offset using the serial gigabit media independent 499 * interface and stores the retrieved information in data. 500 **/ 501static s32 e1000_read_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset, 502 u16 *data) 503{ 504 s32 ret_val = -E1000_ERR_PARAM; 505 506 DEBUGFUNC("e1000_read_phy_reg_sgmii_82575"); 507 508 if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) { 509 DEBUGOUT1("PHY Address %u is out of range\n", offset); 510 goto out; 511 } 512 513 ret_val = hw->phy.ops.acquire(hw); 514 if (ret_val) 515 goto out; 516 517 ret_val = e1000_read_phy_reg_i2c(hw, offset, data); 518 519 hw->phy.ops.release(hw); 520 521out: 522 return ret_val; 523} 524 525/** 526 * e1000_write_phy_reg_sgmii_82575 - Write PHY register using sgmii 527 * @hw: pointer to the HW structure 528 * @offset: register offset to write to 529 * @data: data to write at register offset 530 * 531 * Writes the data to PHY register at the offset using the serial gigabit 532 * media independent interface. 533 **/ 534static s32 e1000_write_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset, 535 u16 data) 536{ 537 s32 ret_val = -E1000_ERR_PARAM; 538 539 DEBUGFUNC("e1000_write_phy_reg_sgmii_82575"); 540 541 if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) { 542 DEBUGOUT1("PHY Address %d is out of range\n", offset); 543 goto out; 544 } 545 546 ret_val = hw->phy.ops.acquire(hw); 547 if (ret_val) 548 goto out; 549 550 ret_val = e1000_write_phy_reg_i2c(hw, offset, data); 551 552 hw->phy.ops.release(hw); 553 554out: 555 return ret_val; 556} 557 558/** 559 * e1000_get_phy_id_82575 - Retrieve PHY addr and id 560 * @hw: pointer to the HW structure 561 * 562 * Retrieves the PHY address and ID for both PHY's which do and do not use 563 * sgmi interface. 564 **/ 565static s32 e1000_get_phy_id_82575(struct e1000_hw *hw) 566{ 567 struct e1000_phy_info *phy = &hw->phy; 568 s32 ret_val = E1000_SUCCESS; 569 u16 phy_id; 570 u32 ctrl_ext; 571 u32 mdic; 572 573 DEBUGFUNC("e1000_get_phy_id_82575"); 574 575 /* 576 * For SGMII PHYs, we try the list of possible addresses until 577 * we find one that works. For non-SGMII PHYs 578 * (e.g. integrated copper PHYs), an address of 1 should 579 * work. The result of this function should mean phy->phy_addr 580 * and phy->id are set correctly. 581 */ 582 if (!e1000_sgmii_active_82575(hw)) { 583 phy->addr = 1; 584 ret_val = e1000_get_phy_id(hw); 585 goto out; 586 } 587 588 if (e1000_sgmii_uses_mdio_82575(hw)) { 589 switch (hw->mac.type) { 590 case e1000_82575: 591 case e1000_82576: 592 mdic = E1000_READ_REG(hw, E1000_MDIC); 593 mdic &= E1000_MDIC_PHY_MASK; 594 phy->addr = mdic >> E1000_MDIC_PHY_SHIFT; 595 break; 596 case e1000_82580: 597 case e1000_i350: 598 mdic = E1000_READ_REG(hw, E1000_MDICNFG); 599 mdic &= E1000_MDICNFG_PHY_MASK; 600 phy->addr = mdic >> E1000_MDICNFG_PHY_SHIFT; 601 break; 602 default: 603 ret_val = -E1000_ERR_PHY; 604 goto out; 605 break; 606 } 607 ret_val = e1000_get_phy_id(hw); 608 goto out; 609 } 610 611 /* Power on sgmii phy if it is disabled */ 612 ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT); 613 E1000_WRITE_REG(hw, E1000_CTRL_EXT, 614 ctrl_ext & ~E1000_CTRL_EXT_SDP3_DATA); 615 E1000_WRITE_FLUSH(hw); 616 msec_delay(300); 617 618 /* 619 * The address field in the I2CCMD register is 3 bits and 0 is invalid. 620 * Therefore, we need to test 1-7 621 */ 622 for (phy->addr = 1; phy->addr < 8; phy->addr++) { 623 ret_val = e1000_read_phy_reg_sgmii_82575(hw, PHY_ID1, &phy_id); 624 if (ret_val == E1000_SUCCESS) { 625 DEBUGOUT2("Vendor ID 0x%08X read at address %u\n", 626 phy_id, 627 phy->addr); 628 /* 629 * At the time of this writing, The M88 part is 630 * the only supported SGMII PHY product. 631 */ 632 if (phy_id == M88_VENDOR) 633 break; 634 } else { 635 DEBUGOUT1("PHY address %u was unreadable\n", 636 phy->addr); 637 } 638 } 639 640 /* A valid PHY type couldn't be found. */ 641 if (phy->addr == 8) { 642 phy->addr = 0; 643 ret_val = -E1000_ERR_PHY; 644 } else { 645 ret_val = e1000_get_phy_id(hw); 646 } 647 648 /* restore previous sfp cage power state */ 649 E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext); 650 651out: 652 return ret_val; 653} 654 655/** 656 * e1000_phy_hw_reset_sgmii_82575 - Performs a PHY reset 657 * @hw: pointer to the HW structure 658 * 659 * Resets the PHY using the serial gigabit media independent interface. 660 **/ 661static s32 e1000_phy_hw_reset_sgmii_82575(struct e1000_hw *hw) 662{ 663 s32 ret_val = E1000_SUCCESS; 664 665 DEBUGFUNC("e1000_phy_hw_reset_sgmii_82575"); 666 667 /* 668 * This isn't a TRUE "hard" reset, but is the only reset 669 * available to us at this time. 670 */ 671 672 DEBUGOUT("Soft resetting SGMII attached PHY...\n"); 673 674 if (!(hw->phy.ops.write_reg)) 675 goto out; 676 677 /* 678 * SFP documentation requires the following to configure the SPF module 679 * to work on SGMII. No further documentation is given. 680 */ 681 ret_val = hw->phy.ops.write_reg(hw, 0x1B, 0x8084); 682 if (ret_val) 683 goto out; 684 685 ret_val = hw->phy.ops.commit(hw); 686 687out: 688 return ret_val; 689} 690 691/** 692 * e1000_set_d0_lplu_state_82575 - Set Low Power Linkup D0 state 693 * @hw: pointer to the HW structure 694 * @active: TRUE to enable LPLU, FALSE to disable 695 * 696 * Sets the LPLU D0 state according to the active flag. When 697 * activating LPLU this function also disables smart speed 698 * and vice versa. LPLU will not be activated unless the 699 * device autonegotiation advertisement meets standards of 700 * either 10 or 10/100 or 10/100/1000 at all duplexes. 701 * This is a function pointer entry point only called by 702 * PHY setup routines. 703 **/ 704static s32 e1000_set_d0_lplu_state_82575(struct e1000_hw *hw, bool active) 705{ 706 struct e1000_phy_info *phy = &hw->phy; 707 s32 ret_val = E1000_SUCCESS; 708 u16 data; 709 710 DEBUGFUNC("e1000_set_d0_lplu_state_82575"); 711 712 if (!(hw->phy.ops.read_reg)) 713 goto out; 714 715 ret_val = phy->ops.read_reg(hw, IGP02E1000_PHY_POWER_MGMT, &data); 716 if (ret_val) 717 goto out; 718 719 if (active) { 720 data |= IGP02E1000_PM_D0_LPLU; 721 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT, 722 data); 723 if (ret_val) 724 goto out; 725 726 /* When LPLU is enabled, we should disable SmartSpeed */ 727 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CONFIG, 728 &data); 729 data &= ~IGP01E1000_PSCFR_SMART_SPEED; 730 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CONFIG, 731 data); 732 if (ret_val) 733 goto out; 734 } else { 735 data &= ~IGP02E1000_PM_D0_LPLU; 736 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT, 737 data); 738 /* 739 * LPLU and SmartSpeed are mutually exclusive. LPLU is used 740 * during Dx states where the power conservation is most 741 * important. During driver activity we should enable 742 * SmartSpeed, so performance is maintained. 743 */ 744 if (phy->smart_speed == e1000_smart_speed_on) { 745 ret_val = phy->ops.read_reg(hw, 746 IGP01E1000_PHY_PORT_CONFIG, 747 &data); 748 if (ret_val) 749 goto out; 750 751 data |= IGP01E1000_PSCFR_SMART_SPEED; 752 ret_val = phy->ops.write_reg(hw, 753 IGP01E1000_PHY_PORT_CONFIG, 754 data); 755 if (ret_val) 756 goto out; 757 } else if (phy->smart_speed == e1000_smart_speed_off) { 758 ret_val = phy->ops.read_reg(hw, 759 IGP01E1000_PHY_PORT_CONFIG, 760 &data); 761 if (ret_val) 762 goto out; 763 764 data &= ~IGP01E1000_PSCFR_SMART_SPEED; 765 ret_val = phy->ops.write_reg(hw, 766 IGP01E1000_PHY_PORT_CONFIG, 767 data); 768 if (ret_val) 769 goto out; 770 } 771 } 772 773out: 774 return ret_val; 775} 776 777/** 778 * e1000_set_d0_lplu_state_82580 - Set Low Power Linkup D0 state 779 * @hw: pointer to the HW structure 780 * @active: TRUE to enable LPLU, FALSE to disable 781 * 782 * Sets the LPLU D0 state according to the active flag. When 783 * activating LPLU this function also disables smart speed 784 * and vice versa. LPLU will not be activated unless the 785 * device autonegotiation advertisement meets standards of 786 * either 10 or 10/100 or 10/100/1000 at all duplexes. 787 * This is a function pointer entry point only called by 788 * PHY setup routines. 789 **/ 790static s32 e1000_set_d0_lplu_state_82580(struct e1000_hw *hw, bool active) 791{ 792 struct e1000_phy_info *phy = &hw->phy; 793 s32 ret_val = E1000_SUCCESS; 794 u16 data; 795 796 DEBUGFUNC("e1000_set_d0_lplu_state_82580"); 797 798 data = E1000_READ_REG(hw, E1000_82580_PHY_POWER_MGMT); 799 800 if (active) { 801 data |= E1000_82580_PM_D0_LPLU; 802 803 /* When LPLU is enabled, we should disable SmartSpeed */ 804 data &= ~E1000_82580_PM_SPD; 805 } else { 806 data &= ~E1000_82580_PM_D0_LPLU; 807 808 /* 809 * LPLU and SmartSpeed are mutually exclusive. LPLU is used 810 * during Dx states where the power conservation is most 811 * important. During driver activity we should enable 812 * SmartSpeed, so performance is maintained. 813 */ 814 if (phy->smart_speed == e1000_smart_speed_on) { 815 data |= E1000_82580_PM_SPD; 816 } else if (phy->smart_speed == e1000_smart_speed_off) { 817 data &= ~E1000_82580_PM_SPD; 818 } 819 } 820 821 E1000_WRITE_REG(hw, E1000_82580_PHY_POWER_MGMT, data); 822 return ret_val; 823} 824 825/** 826 * e1000_set_d3_lplu_state_82580 - Sets low power link up state for D3 827 * @hw: pointer to the HW structure 828 * @active: boolean used to enable/disable lplu 829 * 830 * Success returns 0, Failure returns 1 831 * 832 * The low power link up (lplu) state is set to the power management level D3 833 * and SmartSpeed is disabled when active is TRUE, else clear lplu for D3 834 * and enable Smartspeed. LPLU and Smartspeed are mutually exclusive. LPLU 835 * is used during Dx states where the power conservation is most important. 836 * During driver activity, SmartSpeed should be enabled so performance is 837 * maintained. 838 **/ 839s32 e1000_set_d3_lplu_state_82580(struct e1000_hw *hw, bool active) 840{ 841 struct e1000_phy_info *phy = &hw->phy; 842 s32 ret_val = E1000_SUCCESS; 843 u16 data; 844 845 DEBUGFUNC("e1000_set_d3_lplu_state_82580"); 846 847 data = E1000_READ_REG(hw, E1000_82580_PHY_POWER_MGMT); 848 849 if (!active) { 850 data &= ~E1000_82580_PM_D3_LPLU; 851 /* 852 * LPLU and SmartSpeed are mutually exclusive. LPLU is used 853 * during Dx states where the power conservation is most 854 * important. During driver activity we should enable 855 * SmartSpeed, so performance is maintained. 856 */ 857 if (phy->smart_speed == e1000_smart_speed_on) { 858 data |= E1000_82580_PM_SPD; 859 } else if (phy->smart_speed == e1000_smart_speed_off) { 860 data &= ~E1000_82580_PM_SPD; 861 } 862 } else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) || 863 (phy->autoneg_advertised == E1000_ALL_NOT_GIG) || 864 (phy->autoneg_advertised == E1000_ALL_10_SPEED)) { 865 data |= E1000_82580_PM_D3_LPLU; 866 /* When LPLU is enabled, we should disable SmartSpeed */ 867 data &= ~E1000_82580_PM_SPD; 868 } 869 870 E1000_WRITE_REG(hw, E1000_82580_PHY_POWER_MGMT, data); 871 return ret_val; 872} 873 874/** 875 * e1000_acquire_nvm_82575 - Request for access to EEPROM 876 * @hw: pointer to the HW structure 877 * 878 * Acquire the necessary semaphores for exclusive access to the EEPROM. 879 * Set the EEPROM access request bit and wait for EEPROM access grant bit. 880 * Return successful if access grant bit set, else clear the request for 881 * EEPROM access and return -E1000_ERR_NVM (-1). 882 **/ 883static s32 e1000_acquire_nvm_82575(struct e1000_hw *hw) 884{ 885 s32 ret_val; 886 887 DEBUGFUNC("e1000_acquire_nvm_82575"); 888 889 ret_val = e1000_acquire_swfw_sync_82575(hw, E1000_SWFW_EEP_SM); 890 if (ret_val) 891 goto out; 892 ret_val = e1000_acquire_nvm_generic(hw); 893 if (ret_val) 894 e1000_release_swfw_sync_82575(hw, E1000_SWFW_EEP_SM); 895 896out: 897 return ret_val; 898} 899 900/** 901 * e1000_release_nvm_82575 - Release exclusive access to EEPROM 902 * @hw: pointer to the HW structure 903 * 904 * Stop any current commands to the EEPROM and clear the EEPROM request bit, 905 * then release the semaphores acquired. 906 **/ 907static void e1000_release_nvm_82575(struct e1000_hw *hw) 908{ 909 DEBUGFUNC("e1000_release_nvm_82575"); 910 911 e1000_release_swfw_sync_82575(hw, E1000_SWFW_EEP_SM); 912} 913 914/** 915 * e1000_acquire_swfw_sync_82575 - Acquire SW/FW semaphore 916 * @hw: pointer to the HW structure 917 * @mask: specifies which semaphore to acquire 918 * 919 * Acquire the SW/FW semaphore to access the PHY or NVM. The mask 920 * will also specify which port we're acquiring the lock for. 921 **/ 922static s32 e1000_acquire_swfw_sync_82575(struct e1000_hw *hw, u16 mask) 923{ 924 u32 swfw_sync; 925 u32 swmask = mask; 926 u32 fwmask = mask << 16; 927 s32 ret_val = E1000_SUCCESS; 928 s32 i = 0, timeout = 200; /* FIXME: find real value to use here */ 929 930 DEBUGFUNC("e1000_acquire_swfw_sync_82575"); 931 932 while (i < timeout) { 933 if (e1000_get_hw_semaphore_generic(hw)) { 934 ret_val = -E1000_ERR_SWFW_SYNC; 935 goto out; 936 } 937 938 swfw_sync = E1000_READ_REG(hw, E1000_SW_FW_SYNC); 939 if (!(swfw_sync & (fwmask | swmask))) 940 break; 941 942 /* 943 * Firmware currently using resource (fwmask) 944 * or other software thread using resource (swmask) 945 */ 946 e1000_put_hw_semaphore_generic(hw); 947 msec_delay_irq(5); 948 i++; 949 } 950 951 if (i == timeout) { 952 DEBUGOUT("Driver can't access resource, SW_FW_SYNC timeout.\n"); 953 ret_val = -E1000_ERR_SWFW_SYNC; 954 goto out; 955 } 956 957 swfw_sync |= swmask; 958 E1000_WRITE_REG(hw, E1000_SW_FW_SYNC, swfw_sync); 959 960 e1000_put_hw_semaphore_generic(hw); 961 962out: 963 return ret_val; 964} 965 966/** 967 * e1000_release_swfw_sync_82575 - Release SW/FW semaphore 968 * @hw: pointer to the HW structure 969 * @mask: specifies which semaphore to acquire 970 * 971 * Release the SW/FW semaphore used to access the PHY or NVM. The mask 972 * will also specify which port we're releasing the lock for. 973 **/ 974static void e1000_release_swfw_sync_82575(struct e1000_hw *hw, u16 mask) 975{ 976 u32 swfw_sync; 977 978 DEBUGFUNC("e1000_release_swfw_sync_82575"); 979 980 while (e1000_get_hw_semaphore_generic(hw) != E1000_SUCCESS); 981 /* Empty */ 982 983 swfw_sync = E1000_READ_REG(hw, E1000_SW_FW_SYNC); 984 swfw_sync &= ~mask; 985 E1000_WRITE_REG(hw, E1000_SW_FW_SYNC, swfw_sync); 986 987 e1000_put_hw_semaphore_generic(hw); 988} 989 990/** 991 * e1000_get_cfg_done_82575 - Read config done bit 992 * @hw: pointer to the HW structure 993 * 994 * Read the management control register for the config done bit for 995 * completion status. NOTE: silicon which is EEPROM-less will fail trying 996 * to read the config done bit, so an error is *ONLY* logged and returns 997 * E1000_SUCCESS. If we were to return with error, EEPROM-less silicon 998 * would not be able to be reset or change link. 999 **/ 1000static s32 e1000_get_cfg_done_82575(struct e1000_hw *hw) 1001{ 1002 s32 timeout = PHY_CFG_TIMEOUT; 1003 s32 ret_val = E1000_SUCCESS; 1004 u32 mask = E1000_NVM_CFG_DONE_PORT_0; 1005 1006 DEBUGFUNC("e1000_get_cfg_done_82575"); 1007 1008 if (hw->bus.func == E1000_FUNC_1) 1009 mask = E1000_NVM_CFG_DONE_PORT_1; 1010 else if (hw->bus.func == E1000_FUNC_2) 1011 mask = E1000_NVM_CFG_DONE_PORT_2; 1012 else if (hw->bus.func == E1000_FUNC_3) 1013 mask = E1000_NVM_CFG_DONE_PORT_3; 1014 while (timeout) { 1015 if (E1000_READ_REG(hw, E1000_EEMNGCTL) & mask) 1016 break; 1017 msec_delay(1); 1018 timeout--; 1019 } 1020 if (!timeout) 1021 DEBUGOUT("MNG configuration cycle has not completed.\n"); 1022 1023 /* If EEPROM is not marked present, init the PHY manually */ 1024 if (((E1000_READ_REG(hw, E1000_EECD) & E1000_EECD_PRES) == 0) && 1025 (hw->phy.type == e1000_phy_igp_3)) 1026 e1000_phy_init_script_igp3(hw); 1027 1028 return ret_val; 1029} 1030 1031/** 1032 * e1000_get_link_up_info_82575 - Get link speed/duplex info 1033 * @hw: pointer to the HW structure 1034 * @speed: stores the current speed 1035 * @duplex: stores the current duplex 1036 * 1037 * This is a wrapper function, if using the serial gigabit media independent 1038 * interface, use PCS to retrieve the link speed and duplex information. 1039 * Otherwise, use the generic function to get the link speed and duplex info. 1040 **/ 1041static s32 e1000_get_link_up_info_82575(struct e1000_hw *hw, u16 *speed, 1042 u16 *duplex) 1043{ 1044 s32 ret_val; 1045 1046 DEBUGFUNC("e1000_get_link_up_info_82575"); 1047 1048 if (hw->phy.media_type != e1000_media_type_copper) 1049 ret_val = e1000_get_pcs_speed_and_duplex_82575(hw, speed, 1050 duplex); 1051 else 1052 ret_val = e1000_get_speed_and_duplex_copper_generic(hw, speed, 1053 duplex); 1054 1055 return ret_val; 1056} 1057 1058/** 1059 * e1000_check_for_link_82575 - Check for link 1060 * @hw: pointer to the HW structure 1061 * 1062 * If sgmii is enabled, then use the pcs register to determine link, otherwise 1063 * use the generic interface for determining link. 1064 **/ 1065static s32 e1000_check_for_link_82575(struct e1000_hw *hw) 1066{ 1067 s32 ret_val; 1068 u16 speed, duplex; 1069 1070 DEBUGFUNC("e1000_check_for_link_82575"); 1071 1072 if (hw->phy.media_type != e1000_media_type_copper) { 1073 ret_val = e1000_get_pcs_speed_and_duplex_82575(hw, &speed, 1074 &duplex); 1075 /* 1076 * Use this flag to determine if link needs to be checked or 1077 * not. If we have link clear the flag so that we do not 1078 * continue to check for link. 1079 */ 1080 hw->mac.get_link_status = !hw->mac.serdes_has_link; 1081 } else { 1082 ret_val = e1000_check_for_copper_link_generic(hw); 1083 } 1084 1085 return ret_val; 1086} 1087 1088/** 1089 * e1000_power_up_serdes_link_82575 - Power up the serdes link after shutdown 1090 * @hw: pointer to the HW structure 1091 **/ 1092static void e1000_power_up_serdes_link_82575(struct e1000_hw *hw) 1093{ 1094 u32 reg; 1095 1096 DEBUGFUNC("e1000_power_up_serdes_link_82575"); 1097 1098 if ((hw->phy.media_type != e1000_media_type_internal_serdes) && 1099 !e1000_sgmii_active_82575(hw)) 1100 return; 1101 1102 /* Enable PCS to turn on link */ 1103 reg = E1000_READ_REG(hw, E1000_PCS_CFG0); 1104 reg |= E1000_PCS_CFG_PCS_EN; 1105 E1000_WRITE_REG(hw, E1000_PCS_CFG0, reg); 1106 1107 /* Power up the laser */ 1108 reg = E1000_READ_REG(hw, E1000_CTRL_EXT); 1109 reg &= ~E1000_CTRL_EXT_SDP3_DATA; 1110 E1000_WRITE_REG(hw, E1000_CTRL_EXT, reg); 1111 1112 /* flush the write to verify completion */ 1113 E1000_WRITE_FLUSH(hw); 1114 msec_delay(1); 1115} 1116 1117/** 1118 * e1000_get_pcs_speed_and_duplex_82575 - Retrieve current speed/duplex 1119 * @hw: pointer to the HW structure 1120 * @speed: stores the current speed 1121 * @duplex: stores the current duplex 1122 * 1123 * Using the physical coding sub-layer (PCS), retrieve the current speed and 1124 * duplex, then store the values in the pointers provided. 1125 **/ 1126static s32 e1000_get_pcs_speed_and_duplex_82575(struct e1000_hw *hw, 1127 u16 *speed, u16 *duplex) 1128{ 1129 struct e1000_mac_info *mac = &hw->mac; 1130 u32 pcs; 1131 1132 DEBUGFUNC("e1000_get_pcs_speed_and_duplex_82575"); 1133 1134 /* Set up defaults for the return values of this function */ 1135 mac->serdes_has_link = FALSE; 1136 *speed = 0; 1137 *duplex = 0; 1138 1139 /* 1140 * Read the PCS Status register for link state. For non-copper mode, 1141 * the status register is not accurate. The PCS status register is 1142 * used instead. 1143 */ 1144 pcs = E1000_READ_REG(hw, E1000_PCS_LSTAT); 1145 1146 /* 1147 * The link up bit determines when link is up on autoneg. The sync ok 1148 * gets set once both sides sync up and agree upon link. Stable link 1149 * can be determined by checking for both link up and link sync ok 1150 */ 1151 if ((pcs & E1000_PCS_LSTS_LINK_OK) && (pcs & E1000_PCS_LSTS_SYNK_OK)) { 1152 mac->serdes_has_link = TRUE; 1153 1154 /* Detect and store PCS speed */ 1155 if (pcs & E1000_PCS_LSTS_SPEED_1000) { 1156 *speed = SPEED_1000; 1157 } else if (pcs & E1000_PCS_LSTS_SPEED_100) { 1158 *speed = SPEED_100; 1159 } else { 1160 *speed = SPEED_10; 1161 } 1162 1163 /* Detect and store PCS duplex */ 1164 if (pcs & E1000_PCS_LSTS_DUPLEX_FULL) { 1165 *duplex = FULL_DUPLEX; 1166 } else { 1167 *duplex = HALF_DUPLEX; 1168 } 1169 } 1170 1171 return E1000_SUCCESS; 1172} 1173 1174/** 1175 * e1000_shutdown_serdes_link_82575 - Remove link during power down 1176 * @hw: pointer to the HW structure 1177 * 1178 * In the case of serdes shut down sfp and PCS on driver unload 1179 * when management pass thru is not enabled. 1180 **/ 1181void e1000_shutdown_serdes_link_82575(struct e1000_hw *hw) 1182{ 1183 u32 reg; 1184 1185 DEBUGFUNC("e1000_shutdown_serdes_link_82575"); 1186 1187 if ((hw->phy.media_type != e1000_media_type_internal_serdes) && 1188 !e1000_sgmii_active_82575(hw)) 1189 return; 1190 1191 if (!e1000_enable_mng_pass_thru(hw)) { 1192 /* Disable PCS to turn off link */ 1193 reg = E1000_READ_REG(hw, E1000_PCS_CFG0); 1194 reg &= ~E1000_PCS_CFG_PCS_EN; 1195 E1000_WRITE_REG(hw, E1000_PCS_CFG0, reg); 1196 1197 /* shutdown the laser */ 1198 reg = E1000_READ_REG(hw, E1000_CTRL_EXT); 1199 reg |= E1000_CTRL_EXT_SDP3_DATA; 1200 E1000_WRITE_REG(hw, E1000_CTRL_EXT, reg); 1201 1202 /* flush the write to verify completion */ 1203 E1000_WRITE_FLUSH(hw); 1204 msec_delay(1); 1205 } 1206 1207 return; 1208} 1209 1210/** 1211 * e1000_reset_hw_82575 - Reset hardware 1212 * @hw: pointer to the HW structure 1213 * 1214 * This resets the hardware into a known state. 1215 **/ 1216static s32 e1000_reset_hw_82575(struct e1000_hw *hw) 1217{ 1218 u32 ctrl; 1219 s32 ret_val; 1220 1221 DEBUGFUNC("e1000_reset_hw_82575"); 1222 1223 /* 1224 * Prevent the PCI-E bus from sticking if there is no TLP connection 1225 * on the last TLP read/write transaction when MAC is reset. 1226 */ 1227 ret_val = e1000_disable_pcie_master_generic(hw); 1228 if (ret_val) { 1229 DEBUGOUT("PCI-E Master disable polling has failed.\n"); 1230 } 1231 1232 /* set the completion timeout for interface */ 1233 ret_val = e1000_set_pcie_completion_timeout(hw); 1234 if (ret_val) { 1235 DEBUGOUT("PCI-E Set completion timeout has failed.\n"); 1236 } 1237 1238 DEBUGOUT("Masking off all interrupts\n"); 1239 E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff); 1240 1241 E1000_WRITE_REG(hw, E1000_RCTL, 0); 1242 E1000_WRITE_REG(hw, E1000_TCTL, E1000_TCTL_PSP); 1243 E1000_WRITE_FLUSH(hw); 1244 1245 msec_delay(10); 1246 1247 ctrl = E1000_READ_REG(hw, E1000_CTRL); 1248 1249 DEBUGOUT("Issuing a global reset to MAC\n"); 1250 E1000_WRITE_REG(hw, E1000_CTRL, ctrl | E1000_CTRL_RST); 1251 1252 ret_val = e1000_get_auto_rd_done_generic(hw); 1253 if (ret_val) { 1254 /* 1255 * When auto config read does not complete, do not 1256 * return with an error. This can happen in situations 1257 * where there is no eeprom and prevents getting link. 1258 */ 1259 DEBUGOUT("Auto Read Done did not complete\n"); 1260 } 1261 1262 /* If EEPROM is not present, run manual init scripts */ 1263 if ((E1000_READ_REG(hw, E1000_EECD) & E1000_EECD_PRES) == 0) 1264 e1000_reset_init_script_82575(hw); 1265 1266 /* Clear any pending interrupt events. */ 1267 E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff); 1268 E1000_READ_REG(hw, E1000_ICR); 1269 1270 /* Install any alternate MAC address into RAR0 */ 1271 ret_val = e1000_check_alt_mac_addr_generic(hw); 1272 1273 return ret_val; 1274} 1275 1276/** 1277 * e1000_init_hw_82575 - Initialize hardware 1278 * @hw: pointer to the HW structure 1279 * 1280 * This inits the hardware readying it for operation. 1281 **/ 1282static s32 e1000_init_hw_82575(struct e1000_hw *hw) 1283{ 1284 struct e1000_mac_info *mac = &hw->mac; 1285 s32 ret_val; 1286 u16 i, rar_count = mac->rar_entry_count; 1287 1288 DEBUGFUNC("e1000_init_hw_82575"); 1289 1290 /* Initialize identification LED */ 1291 ret_val = mac->ops.id_led_init(hw); 1292 if (ret_val) { 1293 DEBUGOUT("Error initializing identification LED\n"); 1294 /* This is not fatal and we should not stop init due to this */ 1295 } 1296 1297 /* Disabling VLAN filtering */ 1298 DEBUGOUT("Initializing the IEEE VLAN\n"); 1299 mac->ops.clear_vfta(hw); 1300 1301 /* Setup the receive address */ 1302 e1000_init_rx_addrs_generic(hw, rar_count); 1303 1304 /* Zero out the Multicast HASH table */ 1305 DEBUGOUT("Zeroing the MTA\n"); 1306 for (i = 0; i < mac->mta_reg_count; i++) 1307 E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0); 1308 1309 /* Zero out the Unicast HASH table */ 1310 DEBUGOUT("Zeroing the UTA\n"); 1311 for (i = 0; i < mac->uta_reg_count; i++) 1312 E1000_WRITE_REG_ARRAY(hw, E1000_UTA, i, 0); 1313 1314 /* Setup link and flow control */ 1315 ret_val = mac->ops.setup_link(hw); 1316 1317 /* 1318 * Clear all of the statistics registers (clear on read). It is 1319 * important that we do this after we have tried to establish link 1320 * because the symbol error count will increment wildly if there 1321 * is no link. 1322 */ 1323 e1000_clear_hw_cntrs_82575(hw); 1324 1325 return ret_val; 1326} 1327 1328/** 1329 * e1000_setup_copper_link_82575 - Configure copper link settings 1330 * @hw: pointer to the HW structure 1331 * 1332 * Configures the link for auto-neg or forced speed and duplex. Then we check 1333 * for link, once link is established calls to configure collision distance 1334 * and flow control are called. 1335 **/ 1336static s32 e1000_setup_copper_link_82575(struct e1000_hw *hw) 1337{ 1338 u32 ctrl; 1339 s32 ret_val; 1340 1341 DEBUGFUNC("e1000_setup_copper_link_82575"); 1342 1343 ctrl = E1000_READ_REG(hw, E1000_CTRL); 1344 ctrl |= E1000_CTRL_SLU; 1345 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); 1346 E1000_WRITE_REG(hw, E1000_CTRL, ctrl); 1347 1348 ret_val = e1000_setup_serdes_link_82575(hw); 1349 if (ret_val) 1350 goto out; 1351 1352 if (e1000_sgmii_active_82575(hw) && !hw->phy.reset_disable) { 1353 /* allow time for SFP cage time to power up phy */ 1354 msec_delay(300); 1355 1356 ret_val = hw->phy.ops.reset(hw); 1357 if (ret_val) { 1358 DEBUGOUT("Error resetting the PHY.\n"); 1359 goto out; 1360 } 1361 } 1362 switch (hw->phy.type) { 1363 case e1000_phy_m88: 1364 if (hw->phy.id == I347AT4_E_PHY_ID || 1365 hw->phy.id == M88E1112_E_PHY_ID || 1366 hw->phy.id == M88E1340M_E_PHY_ID) 1367 ret_val = e1000_copper_link_setup_m88_gen2(hw); 1368 else 1369 ret_val = e1000_copper_link_setup_m88(hw); 1370 break; 1371 case e1000_phy_igp_3: 1372 ret_val = e1000_copper_link_setup_igp(hw); 1373 break; 1374 case e1000_phy_82580: 1375 ret_val = e1000_copper_link_setup_82577(hw); 1376 break; 1377 default: 1378 ret_val = -E1000_ERR_PHY; 1379 break; 1380 } 1381 1382 if (ret_val) 1383 goto out; 1384 1385 ret_val = e1000_setup_copper_link_generic(hw); 1386out: 1387 return ret_val; 1388} 1389 1390/** 1391 * e1000_setup_serdes_link_82575 - Setup link for serdes 1392 * @hw: pointer to the HW structure 1393 * 1394 * Configure the physical coding sub-layer (PCS) link. The PCS link is 1395 * used on copper connections where the serialized gigabit media independent 1396 * interface (sgmii), or serdes fiber is being used. Configures the link 1397 * for auto-negotiation or forces speed/duplex. 1398 **/ 1399static s32 e1000_setup_serdes_link_82575(struct e1000_hw *hw) 1400{ 1401 u32 ctrl_ext, ctrl_reg, reg; 1402 bool pcs_autoneg; 1403 1404 DEBUGFUNC("e1000_setup_serdes_link_82575"); 1405 1406 if ((hw->phy.media_type != e1000_media_type_internal_serdes) && 1407 !e1000_sgmii_active_82575(hw)) 1408 return E1000_SUCCESS; 1409 1410 /* 1411 * On the 82575, SerDes loopback mode persists until it is 1412 * explicitly turned off or a power cycle is performed. A read to 1413 * the register does not indicate its status. Therefore, we ensure 1414 * loopback mode is disabled during initialization. 1415 */ 1416 E1000_WRITE_REG(hw, E1000_SCTL, E1000_SCTL_DISABLE_SERDES_LOOPBACK); 1417 1418 /* power on the sfp cage if present */ 1419 ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT); 1420 ctrl_ext &= ~E1000_CTRL_EXT_SDP3_DATA; 1421 E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext); 1422 1423 ctrl_reg = E1000_READ_REG(hw, E1000_CTRL); 1424 ctrl_reg |= E1000_CTRL_SLU; 1425 1426 /* set both sw defined pins on 82575/82576*/ 1427 if (hw->mac.type == e1000_82575 || hw->mac.type == e1000_82576) 1428 ctrl_reg |= E1000_CTRL_SWDPIN0 | E1000_CTRL_SWDPIN1; 1429 1430 reg = E1000_READ_REG(hw, E1000_PCS_LCTL); 1431 1432 /* default pcs_autoneg to the same setting as mac autoneg */ 1433 pcs_autoneg = hw->mac.autoneg; 1434 1435 switch (ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK) { 1436 case E1000_CTRL_EXT_LINK_MODE_SGMII: 1437 /* sgmii mode lets the phy handle forcing speed/duplex */ 1438 pcs_autoneg = TRUE; 1439 /* autoneg time out should be disabled for SGMII mode */ 1440 reg &= ~(E1000_PCS_LCTL_AN_TIMEOUT); 1441 break; 1442 case E1000_CTRL_EXT_LINK_MODE_1000BASE_KX: 1443 /* disable PCS autoneg and support parallel detect only */ 1444 pcs_autoneg = FALSE; 1445 /* fall through to default case */ 1446 default: 1447 /* 1448 * non-SGMII modes only supports a speed of 1000/Full for the 1449 * link so it is best to just force the MAC and let the pcs 1450 * link either autoneg or be forced to 1000/Full 1451 */ 1452 ctrl_reg |= E1000_CTRL_SPD_1000 | E1000_CTRL_FRCSPD | 1453 E1000_CTRL_FD | E1000_CTRL_FRCDPX; 1454 1455 /* set speed of 1000/Full if speed/duplex is forced */ 1456 reg |= E1000_PCS_LCTL_FSV_1000 | E1000_PCS_LCTL_FDV_FULL; 1457 break; 1458 } 1459 1460 E1000_WRITE_REG(hw, E1000_CTRL, ctrl_reg); 1461 1462 /* 1463 * New SerDes mode allows for forcing speed or autonegotiating speed 1464 * at 1gb. Autoneg should be default set by most drivers. This is the 1465 * mode that will be compatible with older link partners and switches. 1466 * However, both are supported by the hardware and some drivers/tools. 1467 */ 1468 reg &= ~(E1000_PCS_LCTL_AN_ENABLE | E1000_PCS_LCTL_FLV_LINK_UP | 1469 E1000_PCS_LCTL_FSD | E1000_PCS_LCTL_FORCE_LINK); 1470 1471 /* 1472 * We force flow control to prevent the CTRL register values from being 1473 * overwritten by the autonegotiated flow control values 1474 */ 1475 reg |= E1000_PCS_LCTL_FORCE_FCTRL; 1476 1477 if (pcs_autoneg) { 1478 /* Set PCS register for autoneg */ 1479 reg |= E1000_PCS_LCTL_AN_ENABLE | /* Enable Autoneg */ 1480 E1000_PCS_LCTL_AN_RESTART; /* Restart autoneg */ 1481 DEBUGOUT1("Configuring Autoneg:PCS_LCTL=0x%08X\n", reg); 1482 } else { 1483 /* Set PCS register for forced link */ 1484 reg |= E1000_PCS_LCTL_FSD; /* Force Speed */ 1485 DEBUGOUT1("Configuring Forced Link:PCS_LCTL=0x%08X\n", reg); 1486 } 1487 1488 E1000_WRITE_REG(hw, E1000_PCS_LCTL, reg); 1489 1490 if (!e1000_sgmii_active_82575(hw)) 1491 e1000_force_mac_fc_generic(hw); 1492 1493 return E1000_SUCCESS; 1494} 1495 1496/** 1497 * e1000_valid_led_default_82575 - Verify a valid default LED config 1498 * @hw: pointer to the HW structure 1499 * @data: pointer to the NVM (EEPROM) 1500 * 1501 * Read the EEPROM for the current default LED configuration. If the 1502 * LED configuration is not valid, set to a valid LED configuration. 1503 **/ 1504static s32 e1000_valid_led_default_82575(struct e1000_hw *hw, u16 *data) 1505{ 1506 s32 ret_val; 1507 1508 DEBUGFUNC("e1000_valid_led_default_82575"); 1509 1510 ret_val = hw->nvm.ops.read(hw, NVM_ID_LED_SETTINGS, 1, data); 1511 if (ret_val) { 1512 DEBUGOUT("NVM Read Error\n"); 1513 goto out; 1514 } 1515 1516 if (*data == ID_LED_RESERVED_0000 || *data == ID_LED_RESERVED_FFFF) { 1517 switch(hw->phy.media_type) { 1518 case e1000_media_type_internal_serdes: 1519 *data = ID_LED_DEFAULT_82575_SERDES; 1520 break; 1521 case e1000_media_type_copper: 1522 default: 1523 *data = ID_LED_DEFAULT; 1524 break; 1525 } 1526 } 1527out: 1528 return ret_val; 1529} 1530 1531/** 1532 * e1000_sgmii_active_82575 - Return sgmii state 1533 * @hw: pointer to the HW structure 1534 * 1535 * 82575 silicon has a serialized gigabit media independent interface (sgmii) 1536 * which can be enabled for use in the embedded applications. Simply 1537 * return the current state of the sgmii interface. 1538 **/ 1539static bool e1000_sgmii_active_82575(struct e1000_hw *hw) 1540{ 1541 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575; 1542 return dev_spec->sgmii_active; 1543} 1544 1545/** 1546 * e1000_reset_init_script_82575 - Inits HW defaults after reset 1547 * @hw: pointer to the HW structure 1548 * 1549 * Inits recommended HW defaults after a reset when there is no EEPROM 1550 * detected. This is only for the 82575. 1551 **/ 1552static s32 e1000_reset_init_script_82575(struct e1000_hw* hw) 1553{ 1554 DEBUGFUNC("e1000_reset_init_script_82575"); 1555 1556 if (hw->mac.type == e1000_82575) { 1557 DEBUGOUT("Running reset init script for 82575\n"); 1558 /* SerDes configuration via SERDESCTRL */ 1559 e1000_write_8bit_ctrl_reg_generic(hw, E1000_SCTL, 0x00, 0x0C); 1560 e1000_write_8bit_ctrl_reg_generic(hw, E1000_SCTL, 0x01, 0x78); 1561 e1000_write_8bit_ctrl_reg_generic(hw, E1000_SCTL, 0x1B, 0x23); 1562 e1000_write_8bit_ctrl_reg_generic(hw, E1000_SCTL, 0x23, 0x15); 1563 1564 /* CCM configuration via CCMCTL register */ 1565 e1000_write_8bit_ctrl_reg_generic(hw, E1000_CCMCTL, 0x14, 0x00); 1566 e1000_write_8bit_ctrl_reg_generic(hw, E1000_CCMCTL, 0x10, 0x00); 1567 1568 /* PCIe lanes configuration */ 1569 e1000_write_8bit_ctrl_reg_generic(hw, E1000_GIOCTL, 0x00, 0xEC); 1570 e1000_write_8bit_ctrl_reg_generic(hw, E1000_GIOCTL, 0x61, 0xDF); 1571 e1000_write_8bit_ctrl_reg_generic(hw, E1000_GIOCTL, 0x34, 0x05); 1572 e1000_write_8bit_ctrl_reg_generic(hw, E1000_GIOCTL, 0x2F, 0x81); 1573 1574 /* PCIe PLL Configuration */ 1575 e1000_write_8bit_ctrl_reg_generic(hw, E1000_SCCTL, 0x02, 0x47); 1576 e1000_write_8bit_ctrl_reg_generic(hw, E1000_SCCTL, 0x14, 0x00); 1577 e1000_write_8bit_ctrl_reg_generic(hw, E1000_SCCTL, 0x10, 0x00); 1578 } 1579 1580 return E1000_SUCCESS; 1581} 1582 1583/** 1584 * e1000_read_mac_addr_82575 - Read device MAC address 1585 * @hw: pointer to the HW structure 1586 **/ 1587static s32 e1000_read_mac_addr_82575(struct e1000_hw *hw) 1588{ 1589 s32 ret_val = E1000_SUCCESS; 1590 1591 DEBUGFUNC("e1000_read_mac_addr_82575"); 1592 1593 /* 1594 * If there's an alternate MAC address place it in RAR0 1595 * so that it will override the Si installed default perm 1596 * address. 1597 */ 1598 ret_val = e1000_check_alt_mac_addr_generic(hw); 1599 if (ret_val) 1600 goto out; 1601 1602 ret_val = e1000_read_mac_addr_generic(hw); 1603 1604out: 1605 return ret_val; 1606} 1607 1608/** 1609 * e1000_config_collision_dist_82575 - Configure collision distance 1610 * @hw: pointer to the HW structure 1611 * 1612 * Configures the collision distance to the default value and is used 1613 * during link setup. 1614 **/ 1615static void e1000_config_collision_dist_82575(struct e1000_hw *hw) 1616{ 1617 u32 tctl_ext; 1618 1619 DEBUGFUNC("e1000_config_collision_dist_82575"); 1620 1621 tctl_ext = E1000_READ_REG(hw, E1000_TCTL_EXT); 1622 1623 tctl_ext &= ~E1000_TCTL_EXT_COLD; 1624 tctl_ext |= E1000_COLLISION_DISTANCE << E1000_TCTL_EXT_COLD_SHIFT; 1625 1626 E1000_WRITE_REG(hw, E1000_TCTL_EXT, tctl_ext); 1627 E1000_WRITE_FLUSH(hw); 1628} 1629 1630/** 1631 * e1000_power_down_phy_copper_82575 - Remove link during PHY power down 1632 * @hw: pointer to the HW structure 1633 * 1634 * In the case of a PHY power down to save power, or to turn off link during a 1635 * driver unload, or wake on lan is not enabled, remove the link. 1636 **/ 1637static void e1000_power_down_phy_copper_82575(struct e1000_hw *hw) 1638{ 1639 struct e1000_phy_info *phy = &hw->phy; 1640 1641 if (!(phy->ops.check_reset_block)) 1642 return; 1643 1644 /* If the management interface is not enabled, then power down */ 1645 if (!(e1000_enable_mng_pass_thru(hw) || phy->ops.check_reset_block(hw))) 1646 e1000_power_down_phy_copper(hw); 1647 1648 return; 1649} 1650 1651/** 1652 * e1000_clear_hw_cntrs_82575 - Clear device specific hardware counters 1653 * @hw: pointer to the HW structure 1654 * 1655 * Clears the hardware counters by reading the counter registers. 1656 **/ 1657static void e1000_clear_hw_cntrs_82575(struct e1000_hw *hw) 1658{ 1659 DEBUGFUNC("e1000_clear_hw_cntrs_82575"); 1660 1661 e1000_clear_hw_cntrs_base_generic(hw); 1662 1663 E1000_READ_REG(hw, E1000_PRC64); 1664 E1000_READ_REG(hw, E1000_PRC127); 1665 E1000_READ_REG(hw, E1000_PRC255); 1666 E1000_READ_REG(hw, E1000_PRC511); 1667 E1000_READ_REG(hw, E1000_PRC1023); 1668 E1000_READ_REG(hw, E1000_PRC1522); 1669 E1000_READ_REG(hw, E1000_PTC64); 1670 E1000_READ_REG(hw, E1000_PTC127); 1671 E1000_READ_REG(hw, E1000_PTC255); 1672 E1000_READ_REG(hw, E1000_PTC511); 1673 E1000_READ_REG(hw, E1000_PTC1023); 1674 E1000_READ_REG(hw, E1000_PTC1522); 1675 1676 E1000_READ_REG(hw, E1000_ALGNERRC); 1677 E1000_READ_REG(hw, E1000_RXERRC); 1678 E1000_READ_REG(hw, E1000_TNCRS); 1679 E1000_READ_REG(hw, E1000_CEXTERR); 1680 E1000_READ_REG(hw, E1000_TSCTC); 1681 E1000_READ_REG(hw, E1000_TSCTFC); 1682 1683 E1000_READ_REG(hw, E1000_MGTPRC); 1684 E1000_READ_REG(hw, E1000_MGTPDC); 1685 E1000_READ_REG(hw, E1000_MGTPTC); 1686 1687 E1000_READ_REG(hw, E1000_IAC); 1688 E1000_READ_REG(hw, E1000_ICRXOC); 1689 1690 E1000_READ_REG(hw, E1000_ICRXPTC); 1691 E1000_READ_REG(hw, E1000_ICRXATC); 1692 E1000_READ_REG(hw, E1000_ICTXPTC); 1693 E1000_READ_REG(hw, E1000_ICTXATC); 1694 E1000_READ_REG(hw, E1000_ICTXQEC); 1695 E1000_READ_REG(hw, E1000_ICTXQMTC); 1696 E1000_READ_REG(hw, E1000_ICRXDMTC); 1697 1698 E1000_READ_REG(hw, E1000_CBTMPC); 1699 E1000_READ_REG(hw, E1000_HTDPMC); 1700 E1000_READ_REG(hw, E1000_CBRMPC); 1701 E1000_READ_REG(hw, E1000_RPTHC); 1702 E1000_READ_REG(hw, E1000_HGPTC); 1703 E1000_READ_REG(hw, E1000_HTCBDPC); 1704 E1000_READ_REG(hw, E1000_HGORCL); 1705 E1000_READ_REG(hw, E1000_HGORCH); 1706 E1000_READ_REG(hw, E1000_HGOTCL); 1707 E1000_READ_REG(hw, E1000_HGOTCH); 1708 E1000_READ_REG(hw, E1000_LENERRS); 1709 1710 /* This register should not be read in copper configurations */ 1711 if ((hw->phy.media_type == e1000_media_type_internal_serdes) || 1712 e1000_sgmii_active_82575(hw)) 1713 E1000_READ_REG(hw, E1000_SCVPC); 1714} 1715 1716/** 1717 * e1000_rx_fifo_flush_82575 - Clean rx fifo after Rx enable 1718 * @hw: pointer to the HW structure 1719 * 1720 * After rx enable if managability is enabled then there is likely some 1721 * bad data at the start of the fifo and possibly in the DMA fifo. This 1722 * function clears the fifos and flushes any packets that came in as rx was 1723 * being enabled. 1724 **/ 1725void e1000_rx_fifo_flush_82575(struct e1000_hw *hw) 1726{ 1727 u32 rctl, rlpml, rxdctl[4], rfctl, temp_rctl, rx_enabled; 1728 int i, ms_wait; 1729 1730 DEBUGFUNC("e1000_rx_fifo_workaround_82575"); 1731 if (hw->mac.type != e1000_82575 || 1732 !(E1000_READ_REG(hw, E1000_MANC) & E1000_MANC_RCV_TCO_EN)) 1733 return; 1734 1735 /* Disable all Rx queues */ 1736 for (i = 0; i < 4; i++) { 1737 rxdctl[i] = E1000_READ_REG(hw, E1000_RXDCTL(i)); 1738 E1000_WRITE_REG(hw, E1000_RXDCTL(i), 1739 rxdctl[i] & ~E1000_RXDCTL_QUEUE_ENABLE); 1740 } 1741 /* Poll all queues to verify they have shut down */ 1742 for (ms_wait = 0; ms_wait < 10; ms_wait++) { 1743 msec_delay(1); 1744 rx_enabled = 0; 1745 for (i = 0; i < 4; i++) 1746 rx_enabled |= E1000_READ_REG(hw, E1000_RXDCTL(i)); 1747 if (!(rx_enabled & E1000_RXDCTL_QUEUE_ENABLE)) 1748 break; 1749 } 1750 1751 if (ms_wait == 10) 1752 DEBUGOUT("Queue disable timed out after 10ms\n"); 1753 1754 /* Clear RLPML, RCTL.SBP, RFCTL.LEF, and set RCTL.LPE so that all 1755 * incoming packets are rejected. Set enable and wait 2ms so that 1756 * any packet that was coming in as RCTL.EN was set is flushed 1757 */ 1758 rfctl = E1000_READ_REG(hw, E1000_RFCTL); 1759 E1000_WRITE_REG(hw, E1000_RFCTL, rfctl & ~E1000_RFCTL_LEF); 1760 1761 rlpml = E1000_READ_REG(hw, E1000_RLPML); 1762 E1000_WRITE_REG(hw, E1000_RLPML, 0); 1763 1764 rctl = E1000_READ_REG(hw, E1000_RCTL); 1765 temp_rctl = rctl & ~(E1000_RCTL_EN | E1000_RCTL_SBP); 1766 temp_rctl |= E1000_RCTL_LPE; 1767 1768 E1000_WRITE_REG(hw, E1000_RCTL, temp_rctl); 1769 E1000_WRITE_REG(hw, E1000_RCTL, temp_rctl | E1000_RCTL_EN); 1770 E1000_WRITE_FLUSH(hw); 1771 msec_delay(2); 1772 1773 /* Enable Rx queues that were previously enabled and restore our 1774 * previous state 1775 */ 1776 for (i = 0; i < 4; i++) 1777 E1000_WRITE_REG(hw, E1000_RXDCTL(i), rxdctl[i]); 1778 E1000_WRITE_REG(hw, E1000_RCTL, rctl); 1779 E1000_WRITE_FLUSH(hw); 1780 1781 E1000_WRITE_REG(hw, E1000_RLPML, rlpml); 1782 E1000_WRITE_REG(hw, E1000_RFCTL, rfctl); 1783 1784 /* Flush receive errors generated by workaround */ 1785 E1000_READ_REG(hw, E1000_ROC); 1786 E1000_READ_REG(hw, E1000_RNBC); 1787 E1000_READ_REG(hw, E1000_MPC); 1788} 1789 1790/** 1791 * e1000_set_pcie_completion_timeout - set pci-e completion timeout 1792 * @hw: pointer to the HW structure 1793 * 1794 * The defaults for 82575 and 82576 should be in the range of 50us to 50ms, 1795 * however the hardware default for these parts is 500us to 1ms which is less 1796 * than the 10ms recommended by the pci-e spec. To address this we need to 1797 * increase the value to either 10ms to 200ms for capability version 1 config, 1798 * or 16ms to 55ms for version 2. 1799 **/ 1800static s32 e1000_set_pcie_completion_timeout(struct e1000_hw *hw) 1801{ 1802 u32 gcr = E1000_READ_REG(hw, E1000_GCR); 1803 s32 ret_val = E1000_SUCCESS; 1804 u16 pcie_devctl2; 1805 1806 /* only take action if timeout value is defaulted to 0 */ 1807 if (gcr & E1000_GCR_CMPL_TMOUT_MASK) 1808 goto out; 1809 1810 /* 1811 * if capababilities version is type 1 we can write the 1812 * timeout of 10ms to 200ms through the GCR register 1813 */ 1814 if (!(gcr & E1000_GCR_CAP_VER2)) { 1815 gcr |= E1000_GCR_CMPL_TMOUT_10ms; 1816 goto out; 1817 } 1818 1819 /* 1820 * for version 2 capabilities we need to write the config space 1821 * directly in order to set the completion timeout value for 1822 * 16ms to 55ms 1823 */ 1824 ret_val = e1000_read_pcie_cap_reg(hw, PCIE_DEVICE_CONTROL2, 1825 &pcie_devctl2); 1826 if (ret_val) 1827 goto out; 1828 1829 pcie_devctl2 |= PCIE_DEVICE_CONTROL2_16ms; 1830 1831 ret_val = e1000_write_pcie_cap_reg(hw, PCIE_DEVICE_CONTROL2, 1832 &pcie_devctl2); 1833out: 1834 /* disable completion timeout resend */ 1835 gcr &= ~E1000_GCR_CMPL_TMOUT_RESEND; 1836 1837 E1000_WRITE_REG(hw, E1000_GCR, gcr); 1838 return ret_val; 1839} 1840 1841/** 1842 * e1000_vmdq_set_anti_spoofing_pf - enable or disable anti-spoofing 1843 * @hw: pointer to the hardware struct 1844 * @enable: state to enter, either enabled or disabled 1845 * @pf: Physical Function pool - do not set anti-spoofing for the PF 1846 * 1847 * enables/disables L2 switch anti-spoofing functionality. 1848 **/ 1849void e1000_vmdq_set_anti_spoofing_pf(struct e1000_hw *hw, bool enable, int pf) 1850{ 1851 u32 dtxswc; 1852 1853 switch (hw->mac.type) { 1854 case e1000_82576: 1855 case e1000_i350: 1856 dtxswc = E1000_READ_REG(hw, E1000_DTXSWC); 1857 if (enable) { 1858 dtxswc |= (E1000_DTXSWC_MAC_SPOOF_MASK | 1859 E1000_DTXSWC_VLAN_SPOOF_MASK); 1860 /* The PF can spoof - it has to in order to 1861 * support emulation mode NICs */ 1862 dtxswc ^= (1 << pf | 1 << (pf + MAX_NUM_VFS)); 1863 } else { 1864 dtxswc &= ~(E1000_DTXSWC_MAC_SPOOF_MASK | 1865 E1000_DTXSWC_VLAN_SPOOF_MASK); 1866 } 1867 E1000_WRITE_REG(hw, E1000_DTXSWC, dtxswc); 1868 break; 1869 default: 1870 break; 1871 } 1872} 1873 1874/** 1875 * e1000_vmdq_set_loopback_pf - enable or disable vmdq loopback 1876 * @hw: pointer to the hardware struct 1877 * @enable: state to enter, either enabled or disabled 1878 * 1879 * enables/disables L2 switch loopback functionality. 1880 **/ 1881void e1000_vmdq_set_loopback_pf(struct e1000_hw *hw, bool enable) 1882{ 1883 u32 dtxswc; 1884 1885 switch (hw->mac.type) { 1886 case e1000_82576: 1887 dtxswc = E1000_READ_REG(hw, E1000_DTXSWC); 1888 if (enable) 1889 dtxswc |= E1000_DTXSWC_VMDQ_LOOPBACK_EN; 1890 else 1891 dtxswc &= ~E1000_DTXSWC_VMDQ_LOOPBACK_EN; 1892 E1000_WRITE_REG(hw, E1000_DTXSWC, dtxswc); 1893 break; 1894 case e1000_i350: 1895 dtxswc = E1000_READ_REG(hw, E1000_TXSWC); 1896 if (enable) 1897 dtxswc |= E1000_DTXSWC_VMDQ_LOOPBACK_EN; 1898 else 1899 dtxswc &= ~E1000_DTXSWC_VMDQ_LOOPBACK_EN; 1900 E1000_WRITE_REG(hw, E1000_TXSWC, dtxswc); 1901 break; 1902 default: 1903 /* Currently no other hardware supports loopback */ 1904 break; 1905 } 1906 1907 1908} 1909 1910/** 1911 * e1000_vmdq_set_replication_pf - enable or disable vmdq replication 1912 * @hw: pointer to the hardware struct 1913 * @enable: state to enter, either enabled or disabled 1914 * 1915 * enables/disables replication of packets across multiple pools. 1916 **/ 1917void e1000_vmdq_set_replication_pf(struct e1000_hw *hw, bool enable) 1918{ 1919 u32 vt_ctl = E1000_READ_REG(hw, E1000_VT_CTL); 1920 1921 if (enable) 1922 vt_ctl |= E1000_VT_CTL_VM_REPL_EN; 1923 else 1924 vt_ctl &= ~E1000_VT_CTL_VM_REPL_EN; 1925 1926 E1000_WRITE_REG(hw, E1000_VT_CTL, vt_ctl); 1927} 1928 1929/** 1930 * e1000_read_phy_reg_82580 - Read 82580 MDI control register 1931 * @hw: pointer to the HW structure 1932 * @offset: register offset to be read 1933 * @data: pointer to the read data 1934 * 1935 * Reads the MDI control register in the PHY at offset and stores the 1936 * information read to data. 1937 **/ 1938static s32 e1000_read_phy_reg_82580(struct e1000_hw *hw, u32 offset, u16 *data) 1939{ 1940 s32 ret_val; 1941 1942 DEBUGFUNC("e1000_read_phy_reg_82580"); 1943 1944 ret_val = hw->phy.ops.acquire(hw); 1945 if (ret_val) 1946 goto out; 1947 1948 ret_val = e1000_read_phy_reg_mdic(hw, offset, data); 1949 1950 hw->phy.ops.release(hw); 1951 1952out: 1953 return ret_val; 1954} 1955 1956/** 1957 * e1000_write_phy_reg_82580 - Write 82580 MDI control register 1958 * @hw: pointer to the HW structure 1959 * @offset: register offset to write to 1960 * @data: data to write to register at offset 1961 * 1962 * Writes data to MDI control register in the PHY at offset. 1963 **/ 1964static s32 e1000_write_phy_reg_82580(struct e1000_hw *hw, u32 offset, u16 data) 1965{ 1966 s32 ret_val; 1967 1968 DEBUGFUNC("e1000_write_phy_reg_82580"); 1969 1970 ret_val = hw->phy.ops.acquire(hw); 1971 if (ret_val) 1972 goto out; 1973 1974 ret_val = e1000_write_phy_reg_mdic(hw, offset, data); 1975 1976 hw->phy.ops.release(hw); 1977 1978out: 1979 return ret_val; 1980} 1981 1982/** 1983 * e1000_reset_mdicnfg_82580 - Reset MDICNFG destination and com_mdio bits 1984 * @hw: pointer to the HW structure 1985 * 1986 * This resets the MDICNFG.Destination and MDICNFG.Com_MDIO bits based on 1987 * the values found in the EEPROM. This addresses an issue in which these 1988 * bits are not restored from EEPROM after reset. 1989 **/ 1990static s32 e1000_reset_mdicnfg_82580(struct e1000_hw *hw) 1991{ 1992 s32 ret_val = E1000_SUCCESS; 1993 u32 mdicnfg; 1994 u16 nvm_data = 0; 1995 1996 DEBUGFUNC("e1000_reset_mdicnfg_82580"); 1997 1998 if (hw->mac.type != e1000_82580) 1999 goto out; 2000 if (!e1000_sgmii_active_82575(hw)) 2001 goto out; 2002 2003 ret_val = hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A + 2004 NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1, 2005 &nvm_data); 2006 if (ret_val) { 2007 DEBUGOUT("NVM Read Error\n"); 2008 goto out; 2009 } 2010 2011 mdicnfg = E1000_READ_REG(hw, E1000_MDICNFG); 2012 if (nvm_data & NVM_WORD24_EXT_MDIO) 2013 mdicnfg |= E1000_MDICNFG_EXT_MDIO; 2014 if (nvm_data & NVM_WORD24_COM_MDIO) 2015 mdicnfg |= E1000_MDICNFG_COM_MDIO; 2016 E1000_WRITE_REG(hw, E1000_MDICNFG, mdicnfg); 2017out: 2018 return ret_val; 2019} 2020 2021/** 2022 * e1000_reset_hw_82580 - Reset hardware 2023 * @hw: pointer to the HW structure 2024 * 2025 * This resets function or entire device (all ports, etc.) 2026 * to a known state. 2027 **/ 2028static s32 e1000_reset_hw_82580(struct e1000_hw *hw) 2029{ 2030 s32 ret_val = E1000_SUCCESS; 2031 /* BH SW mailbox bit in SW_FW_SYNC */ 2032 u16 swmbsw_mask = E1000_SW_SYNCH_MB; 2033 u32 ctrl; 2034 bool global_device_reset = hw->dev_spec._82575.global_device_reset; 2035 2036 DEBUGFUNC("e1000_reset_hw_82580"); 2037 2038 hw->dev_spec._82575.global_device_reset = FALSE; 2039 2040 /* Get current control state. */ 2041 ctrl = E1000_READ_REG(hw, E1000_CTRL); 2042 2043 /* 2044 * Prevent the PCI-E bus from sticking if there is no TLP connection 2045 * on the last TLP read/write transaction when MAC is reset. 2046 */ 2047 ret_val = e1000_disable_pcie_master_generic(hw); 2048 if (ret_val) 2049 DEBUGOUT("PCI-E Master disable polling has failed.\n"); 2050 2051 DEBUGOUT("Masking off all interrupts\n"); 2052 E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff); 2053 E1000_WRITE_REG(hw, E1000_RCTL, 0); 2054 E1000_WRITE_REG(hw, E1000_TCTL, E1000_TCTL_PSP); 2055 E1000_WRITE_FLUSH(hw); 2056 2057 msec_delay(10); 2058 2059 /* Determine whether or not a global dev reset is requested */ 2060 if (global_device_reset && 2061 e1000_acquire_swfw_sync_82575(hw, swmbsw_mask)) 2062 global_device_reset = FALSE; 2063 2064 if (global_device_reset && 2065 !(E1000_READ_REG(hw, E1000_STATUS) & E1000_STAT_DEV_RST_SET)) 2066 ctrl |= E1000_CTRL_DEV_RST; 2067 else 2068 ctrl |= E1000_CTRL_RST; 2069 2070 E1000_WRITE_REG(hw, E1000_CTRL, ctrl); 2071 2072 /* Add delay to insure DEV_RST has time to complete */ 2073 if (global_device_reset) 2074 msec_delay(5); 2075 2076 ret_val = e1000_get_auto_rd_done_generic(hw); 2077 if (ret_val) { 2078 /* 2079 * When auto config read does not complete, do not 2080 * return with an error. This can happen in situations 2081 * where there is no eeprom and prevents getting link. 2082 */ 2083 DEBUGOUT("Auto Read Done did not complete\n"); 2084 } 2085 2086 /* If EEPROM is not present, run manual init scripts */ 2087 if ((E1000_READ_REG(hw, E1000_EECD) & E1000_EECD_PRES) == 0) 2088 e1000_reset_init_script_82575(hw); 2089 2090 /* clear global device reset status bit */ 2091 E1000_WRITE_REG(hw, E1000_STATUS, E1000_STAT_DEV_RST_SET); 2092 2093 /* Clear any pending interrupt events. */ 2094 E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff); 2095 E1000_READ_REG(hw, E1000_ICR); 2096 2097 ret_val = e1000_reset_mdicnfg_82580(hw); 2098 if (ret_val) 2099 DEBUGOUT("Could not reset MDICNFG based on EEPROM\n"); 2100 2101 /* Install any alternate MAC address into RAR0 */ 2102 ret_val = e1000_check_alt_mac_addr_generic(hw); 2103 2104 /* Release semaphore */ 2105 if (global_device_reset) 2106 e1000_release_swfw_sync_82575(hw, swmbsw_mask); 2107 2108 return ret_val; 2109} 2110 2111/** 2112 * e1000_rxpbs_adjust_82580 - adjust RXPBS value to reflect actual Rx PBA size 2113 * @data: data received by reading RXPBS register 2114 * 2115 * The 82580 uses a table based approach for packet buffer allocation sizes. 2116 * This function converts the retrieved value into the correct table value 2117 * 0x0 0x1 0x2 0x3 0x4 0x5 0x6 0x7 2118 * 0x0 36 72 144 1 2 4 8 16 2119 * 0x8 35 70 140 rsv rsv rsv rsv rsv 2120 */ 2121u16 e1000_rxpbs_adjust_82580(u32 data) 2122{ 2123 u16 ret_val = 0; 2124 2125 if (data < E1000_82580_RXPBS_TABLE_SIZE) 2126 ret_val = e1000_82580_rxpbs_table[data]; 2127 2128 return ret_val; 2129} 2130 2131/** 2132 * e1000_validate_nvm_checksum_with_offset - Validate EEPROM 2133 * checksum 2134 * @hw: pointer to the HW structure 2135 * @offset: offset in words of the checksum protected region 2136 * 2137 * Calculates the EEPROM checksum by reading/adding each word of the EEPROM 2138 * and then verifies that the sum of the EEPROM is equal to 0xBABA. 2139 **/ 2140s32 e1000_validate_nvm_checksum_with_offset(struct e1000_hw *hw, u16 offset) 2141{ 2142 s32 ret_val = E1000_SUCCESS; 2143 u16 checksum = 0; 2144 u16 i, nvm_data; 2145 2146 DEBUGFUNC("e1000_validate_nvm_checksum_with_offset"); 2147 2148 for (i = offset; i < ((NVM_CHECKSUM_REG + offset) + 1); i++) { 2149 ret_val = hw->nvm.ops.read(hw, i, 1, &nvm_data); 2150 if (ret_val) { 2151 DEBUGOUT("NVM Read Error\n"); 2152 goto out; 2153 } 2154 checksum += nvm_data; 2155 } 2156 2157 if (checksum != (u16) NVM_SUM) { 2158 DEBUGOUT("NVM Checksum Invalid\n"); 2159 ret_val = -E1000_ERR_NVM; 2160 goto out; 2161 } 2162 2163out: 2164 return ret_val; 2165} 2166 2167/** 2168 * e1000_update_nvm_checksum_with_offset - Update EEPROM 2169 * checksum 2170 * @hw: pointer to the HW structure 2171 * @offset: offset in words of the checksum protected region 2172 * 2173 * Updates the EEPROM checksum by reading/adding each word of the EEPROM 2174 * up to the checksum. Then calculates the EEPROM checksum and writes the 2175 * value to the EEPROM. 2176 **/ 2177s32 e1000_update_nvm_checksum_with_offset(struct e1000_hw *hw, u16 offset) 2178{ 2179 s32 ret_val; 2180 u16 checksum = 0; 2181 u16 i, nvm_data; 2182 2183 DEBUGFUNC("e1000_update_nvm_checksum_with_offset"); 2184 2185 for (i = offset; i < (NVM_CHECKSUM_REG + offset); i++) { 2186 ret_val = hw->nvm.ops.read(hw, i, 1, &nvm_data); 2187 if (ret_val) { 2188 DEBUGOUT("NVM Read Error while updating checksum.\n"); 2189 goto out; 2190 } 2191 checksum += nvm_data; 2192 } 2193 checksum = (u16) NVM_SUM - checksum; 2194 ret_val = hw->nvm.ops.write(hw, (NVM_CHECKSUM_REG + offset), 1, 2195 &checksum); 2196 if (ret_val) 2197 DEBUGOUT("NVM Write Error while updating checksum.\n"); 2198 2199out: 2200 return ret_val; 2201} 2202 2203/** 2204 * e1000_validate_nvm_checksum_82580 - Validate EEPROM checksum 2205 * @hw: pointer to the HW structure 2206 * 2207 * Calculates the EEPROM section checksum by reading/adding each word of 2208 * the EEPROM and then verifies that the sum of the EEPROM is 2209 * equal to 0xBABA. 2210 **/ 2211static s32 e1000_validate_nvm_checksum_82580(struct e1000_hw *hw) 2212{ 2213 s32 ret_val = E1000_SUCCESS; 2214 u16 eeprom_regions_count = 1; 2215 u16 j, nvm_data; 2216 u16 nvm_offset; 2217 2218 DEBUGFUNC("e1000_validate_nvm_checksum_82580"); 2219 2220 ret_val = hw->nvm.ops.read(hw, NVM_COMPATIBILITY_REG_3, 1, &nvm_data); 2221 if (ret_val) { 2222 DEBUGOUT("NVM Read Error\n"); 2223 goto out; 2224 } 2225 2226 if (nvm_data & NVM_COMPATIBILITY_BIT_MASK) { 2227 /* if chekcsums compatibility bit is set validate checksums 2228 * for all 4 ports. */ 2229 eeprom_regions_count = 4; 2230 } 2231 2232 for (j = 0; j < eeprom_regions_count; j++) { 2233 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j); 2234 ret_val = e1000_validate_nvm_checksum_with_offset(hw, 2235 nvm_offset); 2236 if (ret_val != E1000_SUCCESS) 2237 goto out; 2238 } 2239 2240out: 2241 return ret_val; 2242} 2243 2244/** 2245 * e1000_update_nvm_checksum_82580 - Update EEPROM checksum 2246 * @hw: pointer to the HW structure 2247 * 2248 * Updates the EEPROM section checksums for all 4 ports by reading/adding 2249 * each word of the EEPROM up to the checksum. Then calculates the EEPROM 2250 * checksum and writes the value to the EEPROM. 2251 **/ 2252static s32 e1000_update_nvm_checksum_82580(struct e1000_hw *hw) 2253{ 2254 s32 ret_val; 2255 u16 j, nvm_data; 2256 u16 nvm_offset; 2257 2258 DEBUGFUNC("e1000_update_nvm_checksum_82580"); 2259 2260 ret_val = hw->nvm.ops.read(hw, NVM_COMPATIBILITY_REG_3, 1, &nvm_data); 2261 if (ret_val) { 2262 DEBUGOUT("NVM Read Error while updating checksum" 2263 " compatibility bit.\n"); 2264 goto out; 2265 } 2266 2267 if ((nvm_data & NVM_COMPATIBILITY_BIT_MASK) == 0) { 2268 /* set compatibility bit to validate checksums appropriately */ 2269 nvm_data = nvm_data | NVM_COMPATIBILITY_BIT_MASK; 2270 ret_val = hw->nvm.ops.write(hw, NVM_COMPATIBILITY_REG_3, 1, 2271 &nvm_data); 2272 if (ret_val) { 2273 DEBUGOUT("NVM Write Error while updating checksum" 2274 " compatibility bit.\n"); 2275 goto out; 2276 } 2277 } 2278 2279 for (j = 0; j < 4; j++) { 2280 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j); 2281 ret_val = e1000_update_nvm_checksum_with_offset(hw, nvm_offset); 2282 if (ret_val) { 2283 goto out; 2284 } 2285 } 2286 2287out: 2288 return ret_val; 2289} 2290 2291/** 2292 * e1000_validate_nvm_checksum_i350 - Validate EEPROM checksum 2293 * @hw: pointer to the HW structure 2294 * 2295 * Calculates the EEPROM section checksum by reading/adding each word of 2296 * the EEPROM and then verifies that the sum of the EEPROM is 2297 * equal to 0xBABA. 2298 **/ 2299static s32 e1000_validate_nvm_checksum_i350(struct e1000_hw *hw) 2300{ 2301 s32 ret_val = E1000_SUCCESS; 2302 u16 j; 2303 u16 nvm_offset; 2304 2305 DEBUGFUNC("e1000_validate_nvm_checksum_i350"); 2306 2307 for (j = 0; j < 4; j++) { 2308 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j); 2309 ret_val = e1000_validate_nvm_checksum_with_offset(hw, 2310 nvm_offset); 2311 if (ret_val != E1000_SUCCESS) 2312 goto out; 2313 } 2314 2315out: 2316 return ret_val; 2317} 2318 2319/** 2320 * e1000_update_nvm_checksum_i350 - Update EEPROM checksum 2321 * @hw: pointer to the HW structure 2322 * 2323 * Updates the EEPROM section checksums for all 4 ports by reading/adding 2324 * each word of the EEPROM up to the checksum. Then calculates the EEPROM 2325 * checksum and writes the value to the EEPROM. 2326 **/ 2327static s32 e1000_update_nvm_checksum_i350(struct e1000_hw *hw) 2328{ 2329 s32 ret_val = E1000_SUCCESS; 2330 u16 j; 2331 u16 nvm_offset; 2332 2333 DEBUGFUNC("e1000_update_nvm_checksum_i350"); 2334 2335 for (j = 0; j < 4; j++) { 2336 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j); 2337 ret_val = e1000_update_nvm_checksum_with_offset(hw, nvm_offset); 2338 if (ret_val != E1000_SUCCESS) 2339 goto out; 2340 } 2341 2342out: 2343 return ret_val; 2344} 2345 2346/** 2347 * e1000_set_eee_i350 - Enable/disable EEE support 2348 * @hw: pointer to the HW structure 2349 * 2350 * Enable/disable EEE based on setting in dev_spec structure. 2351 * 2352 **/ 2353s32 e1000_set_eee_i350(struct e1000_hw *hw) 2354{ 2355 s32 ret_val = E1000_SUCCESS; 2356 u32 ipcnfg, eeer, ctrl_ext; 2357 2358 DEBUGFUNC("e1000_set_eee_i350"); 2359 2360 ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT); 2361 if ((hw->mac.type != e1000_i350) || 2362 (ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK)) 2363 goto out; 2364 ipcnfg = E1000_READ_REG(hw, E1000_IPCNFG); 2365 eeer = E1000_READ_REG(hw, E1000_EEER); 2366 2367 /* enable or disable per user setting */ 2368 if (!(hw->dev_spec._82575.eee_disable)) { 2369 ipcnfg |= (E1000_IPCNFG_EEE_1G_AN | 2370 E1000_IPCNFG_EEE_100M_AN); 2371 eeer |= (E1000_EEER_TX_LPI_EN | 2372 E1000_EEER_RX_LPI_EN | 2373 E1000_EEER_LPI_FC); 2374 2375 } else { 2376 ipcnfg &= ~(E1000_IPCNFG_EEE_1G_AN | 2377 E1000_IPCNFG_EEE_100M_AN); 2378 eeer &= ~(E1000_EEER_TX_LPI_EN | 2379 E1000_EEER_RX_LPI_EN | 2380 E1000_EEER_LPI_FC); 2381 } 2382 E1000_WRITE_REG(hw, E1000_IPCNFG, ipcnfg); 2383 E1000_WRITE_REG(hw, E1000_EEER, eeer); 2384 E1000_READ_REG(hw, E1000_IPCNFG); 2385 E1000_READ_REG(hw, E1000_EEER); 2386out: 2387 2388 return ret_val; 2389} 2390