1/****************************************************************************** 2 SPDX-License-Identifier: BSD-3-Clause 3 4 Copyright (c) 2001-2015, Intel Corporation 5 All rights reserved. 6 7 Redistribution and use in source and binary forms, with or without 8 modification, are permitted provided that the following conditions are met: 9 10 1. Redistributions of source code must retain the above copyright notice, 11 this list of conditions and the following disclaimer. 12 13 2. Redistributions in binary form must reproduce the above copyright 14 notice, this list of conditions and the following disclaimer in the 15 documentation and/or other materials provided with the distribution. 16 17 3. Neither the name of the Intel Corporation nor the names of its 18 contributors may be used to endorse or promote products derived from 19 this software without specific prior written permission. 20 21 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 22 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 25 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 POSSIBILITY OF SUCH DAMAGE. 32 33******************************************************************************/ 34/*$FreeBSD$*/ 35 36/* 37 * 82575EB Gigabit Network Connection 38 * 82575EB Gigabit Backplane Connection 39 * 82575GB Gigabit Network Connection 40 * 82576 Gigabit Network Connection 41 * 82576 Quad Port Gigabit Mezzanine Adapter 42 * 82580 Gigabit Network Connection 43 * I350 Gigabit Network Connection 44 */ 45 46#include "e1000_api.h" 47#include "e1000_i210.h" 48 49static s32 e1000_init_phy_params_82575(struct e1000_hw *hw); 50static s32 e1000_init_mac_params_82575(struct e1000_hw *hw); 51static s32 e1000_acquire_phy_82575(struct e1000_hw *hw); 52static void e1000_release_phy_82575(struct e1000_hw *hw); 53static s32 e1000_acquire_nvm_82575(struct e1000_hw *hw); 54static void e1000_release_nvm_82575(struct e1000_hw *hw); 55static s32 e1000_check_for_link_82575(struct e1000_hw *hw); 56static s32 e1000_check_for_link_media_swap(struct e1000_hw *hw); 57static s32 e1000_get_cfg_done_82575(struct e1000_hw *hw); 58static s32 e1000_get_link_up_info_82575(struct e1000_hw *hw, u16 *speed, 59 u16 *duplex); 60static s32 e1000_phy_hw_reset_sgmii_82575(struct e1000_hw *hw); 61static s32 e1000_read_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset, 62 u16 *data); 63static s32 e1000_reset_hw_82575(struct e1000_hw *hw); 64static s32 e1000_reset_hw_82580(struct e1000_hw *hw); 65static s32 e1000_read_phy_reg_82580(struct e1000_hw *hw, 66 u32 offset, u16 *data); 67static s32 e1000_write_phy_reg_82580(struct e1000_hw *hw, 68 u32 offset, u16 data); 69static s32 e1000_set_d0_lplu_state_82580(struct e1000_hw *hw, 70 bool active); 71static s32 e1000_set_d3_lplu_state_82580(struct e1000_hw *hw, 72 bool active); 73static s32 e1000_set_d0_lplu_state_82575(struct e1000_hw *hw, 74 bool active); 75static s32 e1000_setup_copper_link_82575(struct e1000_hw *hw); 76static s32 e1000_setup_serdes_link_82575(struct e1000_hw *hw); 77static s32 e1000_get_media_type_82575(struct e1000_hw *hw); 78static s32 e1000_set_sfp_media_type_82575(struct e1000_hw *hw); 79static s32 e1000_valid_led_default_82575(struct e1000_hw *hw, u16 *data); 80static s32 e1000_write_phy_reg_sgmii_82575(struct e1000_hw *hw, 81 u32 offset, u16 data); 82static void e1000_clear_hw_cntrs_82575(struct e1000_hw *hw); 83static s32 e1000_get_pcs_speed_and_duplex_82575(struct e1000_hw *hw, 84 u16 *speed, u16 *duplex); 85static s32 e1000_get_phy_id_82575(struct e1000_hw *hw); 86static bool e1000_sgmii_active_82575(struct e1000_hw *hw); 87static s32 e1000_reset_init_script_82575(struct e1000_hw *hw); 88static s32 e1000_read_mac_addr_82575(struct e1000_hw *hw); 89static void e1000_config_collision_dist_82575(struct e1000_hw *hw); 90static void e1000_power_down_phy_copper_82575(struct e1000_hw *hw); 91static void e1000_shutdown_serdes_link_82575(struct e1000_hw *hw); 92static void e1000_power_up_serdes_link_82575(struct e1000_hw *hw); 93static s32 e1000_set_pcie_completion_timeout(struct e1000_hw *hw); 94static s32 e1000_reset_mdicnfg_82580(struct e1000_hw *hw); 95static s32 e1000_validate_nvm_checksum_82580(struct e1000_hw *hw); 96static s32 e1000_update_nvm_checksum_82580(struct e1000_hw *hw); 97static s32 e1000_update_nvm_checksum_with_offset(struct e1000_hw *hw, 98 u16 offset); 99static s32 e1000_validate_nvm_checksum_with_offset(struct e1000_hw *hw, 100 u16 offset); 101static s32 e1000_validate_nvm_checksum_i350(struct e1000_hw *hw); 102static s32 e1000_update_nvm_checksum_i350(struct e1000_hw *hw); 103static void e1000_clear_vfta_i350(struct e1000_hw *hw); 104 105static void e1000_i2c_start(struct e1000_hw *hw); 106static void e1000_i2c_stop(struct e1000_hw *hw); 107static s32 e1000_clock_in_i2c_byte(struct e1000_hw *hw, u8 *data); 108static s32 e1000_clock_out_i2c_byte(struct e1000_hw *hw, u8 data); 109static s32 e1000_get_i2c_ack(struct e1000_hw *hw); 110static s32 e1000_clock_in_i2c_bit(struct e1000_hw *hw, bool *data); 111static s32 e1000_clock_out_i2c_bit(struct e1000_hw *hw, bool data); 112static void e1000_raise_i2c_clk(struct e1000_hw *hw, u32 *i2cctl); 113static void e1000_lower_i2c_clk(struct e1000_hw *hw, u32 *i2cctl); 114static s32 e1000_set_i2c_data(struct e1000_hw *hw, u32 *i2cctl, bool data); 115static bool e1000_get_i2c_data(u32 *i2cctl); 116 117static const u16 e1000_82580_rxpbs_table[] = { 118 36, 72, 144, 1, 2, 4, 8, 16, 35, 70, 140 }; 119#define E1000_82580_RXPBS_TABLE_SIZE \ 120 (sizeof(e1000_82580_rxpbs_table) / \ 121 sizeof(e1000_82580_rxpbs_table[0])) 122 123 124/** 125 * e1000_sgmii_uses_mdio_82575 - Determine if I2C pins are for external MDIO 126 * @hw: pointer to the HW structure 127 * 128 * Called to determine if the I2C pins are being used for I2C or as an 129 * external MDIO interface since the two options are mutually exclusive. 130 **/ 131static bool e1000_sgmii_uses_mdio_82575(struct e1000_hw *hw) 132{ 133 u32 reg = 0; 134 bool ext_mdio = FALSE; 135 136 DEBUGFUNC("e1000_sgmii_uses_mdio_82575"); 137 138 switch (hw->mac.type) { 139 case e1000_82575: 140 case e1000_82576: 141 reg = E1000_READ_REG(hw, E1000_MDIC); 142 ext_mdio = !!(reg & E1000_MDIC_DEST); 143 break; 144 case e1000_82580: 145 case e1000_i350: 146 case e1000_i354: 147 case e1000_i210: 148 case e1000_i211: 149 reg = E1000_READ_REG(hw, E1000_MDICNFG); 150 ext_mdio = !!(reg & E1000_MDICNFG_EXT_MDIO); 151 break; 152 default: 153 break; 154 } 155 return ext_mdio; 156} 157 158/** 159 * e1000_init_phy_params_82575 - Init PHY func ptrs. 160 * @hw: pointer to the HW structure 161 **/ 162static s32 e1000_init_phy_params_82575(struct e1000_hw *hw) 163{ 164 struct e1000_phy_info *phy = &hw->phy; 165 s32 ret_val = E1000_SUCCESS; 166 u32 ctrl_ext; 167 168 DEBUGFUNC("e1000_init_phy_params_82575"); 169 170 phy->ops.read_i2c_byte = e1000_read_i2c_byte_generic; 171 phy->ops.write_i2c_byte = e1000_write_i2c_byte_generic; 172 173 if (hw->phy.media_type != e1000_media_type_copper) { 174 phy->type = e1000_phy_none; 175 goto out; 176 } 177 178 phy->ops.power_up = e1000_power_up_phy_copper; 179 phy->ops.power_down = e1000_power_down_phy_copper_82575; 180 181 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT; 182 phy->reset_delay_us = 100; 183 184 phy->ops.acquire = e1000_acquire_phy_82575; 185 phy->ops.check_reset_block = e1000_check_reset_block_generic; 186 phy->ops.commit = e1000_phy_sw_reset_generic; 187 phy->ops.get_cfg_done = e1000_get_cfg_done_82575; 188 phy->ops.release = e1000_release_phy_82575; 189 190 ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT); 191 192 if (e1000_sgmii_active_82575(hw)) { 193 phy->ops.reset = e1000_phy_hw_reset_sgmii_82575; 194 ctrl_ext |= E1000_CTRL_I2C_ENA; 195 } else { 196 phy->ops.reset = e1000_phy_hw_reset_generic; 197 ctrl_ext &= ~E1000_CTRL_I2C_ENA; 198 } 199 200 E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext); 201 e1000_reset_mdicnfg_82580(hw); 202 203 if (e1000_sgmii_active_82575(hw) && !e1000_sgmii_uses_mdio_82575(hw)) { 204 phy->ops.read_reg = e1000_read_phy_reg_sgmii_82575; 205 phy->ops.write_reg = e1000_write_phy_reg_sgmii_82575; 206 } else { 207 switch (hw->mac.type) { 208 case e1000_82580: 209 case e1000_i350: 210 case e1000_i354: 211 phy->ops.read_reg = e1000_read_phy_reg_82580; 212 phy->ops.write_reg = e1000_write_phy_reg_82580; 213 break; 214 case e1000_i210: 215 case e1000_i211: 216 phy->ops.read_reg = e1000_read_phy_reg_gs40g; 217 phy->ops.write_reg = e1000_write_phy_reg_gs40g; 218 break; 219 default: 220 phy->ops.read_reg = e1000_read_phy_reg_igp; 221 phy->ops.write_reg = e1000_write_phy_reg_igp; 222 } 223 } 224 225 /* Set phy->phy_addr and phy->id. */ 226 ret_val = e1000_get_phy_id_82575(hw); 227 228 /* Verify phy id and set remaining function pointers */ 229 switch (phy->id) { 230 case M88E1543_E_PHY_ID: 231 case M88E1512_E_PHY_ID: 232 case I347AT4_E_PHY_ID: 233 case M88E1112_E_PHY_ID: 234 case M88E1340M_E_PHY_ID: 235 case M88E1111_I_PHY_ID: 236 phy->type = e1000_phy_m88; 237 phy->ops.check_polarity = e1000_check_polarity_m88; 238 phy->ops.get_info = e1000_get_phy_info_m88; 239 if (phy->id == I347AT4_E_PHY_ID || 240 phy->id == M88E1112_E_PHY_ID || 241 phy->id == M88E1340M_E_PHY_ID) 242 phy->ops.get_cable_length = 243 e1000_get_cable_length_m88_gen2; 244 else if (phy->id == M88E1543_E_PHY_ID || 245 phy->id == M88E1512_E_PHY_ID) 246 phy->ops.get_cable_length = 247 e1000_get_cable_length_m88_gen2; 248 else 249 phy->ops.get_cable_length = e1000_get_cable_length_m88; 250 phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_m88; 251 /* Check if this PHY is confgured for media swap. */ 252 if (phy->id == M88E1112_E_PHY_ID) { 253 u16 data; 254 255 ret_val = phy->ops.write_reg(hw, 256 E1000_M88E1112_PAGE_ADDR, 257 2); 258 if (ret_val) 259 goto out; 260 261 ret_val = phy->ops.read_reg(hw, 262 E1000_M88E1112_MAC_CTRL_1, 263 &data); 264 if (ret_val) 265 goto out; 266 267 data = (data & E1000_M88E1112_MAC_CTRL_1_MODE_MASK) >> 268 E1000_M88E1112_MAC_CTRL_1_MODE_SHIFT; 269 if (data == E1000_M88E1112_AUTO_COPPER_SGMII || 270 data == E1000_M88E1112_AUTO_COPPER_BASEX) 271 hw->mac.ops.check_for_link = 272 e1000_check_for_link_media_swap; 273 } 274 if (phy->id == M88E1512_E_PHY_ID) { 275 ret_val = e1000_initialize_M88E1512_phy(hw); 276 if (ret_val) 277 goto out; 278 } 279 if (phy->id == M88E1543_E_PHY_ID) { 280 ret_val = e1000_initialize_M88E1543_phy(hw); 281 if (ret_val) 282 goto out; 283 } 284 break; 285 case IGP03E1000_E_PHY_ID: 286 case IGP04E1000_E_PHY_ID: 287 phy->type = e1000_phy_igp_3; 288 phy->ops.check_polarity = e1000_check_polarity_igp; 289 phy->ops.get_info = e1000_get_phy_info_igp; 290 phy->ops.get_cable_length = e1000_get_cable_length_igp_2; 291 phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_igp; 292 phy->ops.set_d0_lplu_state = e1000_set_d0_lplu_state_82575; 293 phy->ops.set_d3_lplu_state = e1000_set_d3_lplu_state_generic; 294 break; 295 case I82580_I_PHY_ID: 296 case I350_I_PHY_ID: 297 phy->type = e1000_phy_82580; 298 phy->ops.check_polarity = e1000_check_polarity_82577; 299 phy->ops.force_speed_duplex = 300 e1000_phy_force_speed_duplex_82577; 301 phy->ops.get_cable_length = e1000_get_cable_length_82577; 302 phy->ops.get_info = e1000_get_phy_info_82577; 303 phy->ops.set_d0_lplu_state = e1000_set_d0_lplu_state_82580; 304 phy->ops.set_d3_lplu_state = e1000_set_d3_lplu_state_82580; 305 break; 306 case I210_I_PHY_ID: 307 phy->type = e1000_phy_i210; 308 phy->ops.check_polarity = e1000_check_polarity_m88; 309 phy->ops.get_info = e1000_get_phy_info_m88; 310 phy->ops.get_cable_length = e1000_get_cable_length_m88_gen2; 311 phy->ops.set_d0_lplu_state = e1000_set_d0_lplu_state_82580; 312 phy->ops.set_d3_lplu_state = e1000_set_d3_lplu_state_82580; 313 phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_m88; 314 break; 315 default: 316 ret_val = -E1000_ERR_PHY; 317 goto out; 318 } 319 320out: 321 return ret_val; 322} 323 324/** 325 * e1000_init_nvm_params_82575 - Init NVM func ptrs. 326 * @hw: pointer to the HW structure 327 **/ 328s32 e1000_init_nvm_params_82575(struct e1000_hw *hw) 329{ 330 struct e1000_nvm_info *nvm = &hw->nvm; 331 u32 eecd = E1000_READ_REG(hw, E1000_EECD); 332 u16 size; 333 334 DEBUGFUNC("e1000_init_nvm_params_82575"); 335 336 size = (u16)((eecd & E1000_EECD_SIZE_EX_MASK) >> 337 E1000_EECD_SIZE_EX_SHIFT); 338 /* 339 * Added to a constant, "size" becomes the left-shift value 340 * for setting word_size. 341 */ 342 size += NVM_WORD_SIZE_BASE_SHIFT; 343 344 /* Just in case size is out of range, cap it to the largest 345 * EEPROM size supported 346 */ 347 if (size > 15) 348 size = 15; 349 350 nvm->word_size = 1 << size; 351 if (hw->mac.type < e1000_i210) { 352 nvm->opcode_bits = 8; 353 nvm->delay_usec = 1; 354 355 switch (nvm->override) { 356 case e1000_nvm_override_spi_large: 357 nvm->page_size = 32; 358 nvm->address_bits = 16; 359 break; 360 case e1000_nvm_override_spi_small: 361 nvm->page_size = 8; 362 nvm->address_bits = 8; 363 break; 364 default: 365 nvm->page_size = eecd & E1000_EECD_ADDR_BITS ? 32 : 8; 366 nvm->address_bits = eecd & E1000_EECD_ADDR_BITS ? 367 16 : 8; 368 break; 369 } 370 if (nvm->word_size == (1 << 15)) 371 nvm->page_size = 128; 372 373 nvm->type = e1000_nvm_eeprom_spi; 374 } else { 375 nvm->type = e1000_nvm_flash_hw; 376 } 377 378 /* Function Pointers */ 379 nvm->ops.acquire = e1000_acquire_nvm_82575; 380 nvm->ops.release = e1000_release_nvm_82575; 381 if (nvm->word_size < (1 << 15)) 382 nvm->ops.read = e1000_read_nvm_eerd; 383 else 384 nvm->ops.read = e1000_read_nvm_spi; 385 386 nvm->ops.write = e1000_write_nvm_spi; 387 nvm->ops.validate = e1000_validate_nvm_checksum_generic; 388 nvm->ops.update = e1000_update_nvm_checksum_generic; 389 nvm->ops.valid_led_default = e1000_valid_led_default_82575; 390 391 /* override generic family function pointers for specific descendants */ 392 switch (hw->mac.type) { 393 case e1000_82580: 394 nvm->ops.validate = e1000_validate_nvm_checksum_82580; 395 nvm->ops.update = e1000_update_nvm_checksum_82580; 396 break; 397 case e1000_i350: 398 case e1000_i354: 399 nvm->ops.validate = e1000_validate_nvm_checksum_i350; 400 nvm->ops.update = e1000_update_nvm_checksum_i350; 401 break; 402 default: 403 break; 404 } 405 406 return E1000_SUCCESS; 407} 408 409/** 410 * e1000_init_mac_params_82575 - Init MAC func ptrs. 411 * @hw: pointer to the HW structure 412 **/ 413static s32 e1000_init_mac_params_82575(struct e1000_hw *hw) 414{ 415 struct e1000_mac_info *mac = &hw->mac; 416 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575; 417 418 DEBUGFUNC("e1000_init_mac_params_82575"); 419 420 /* Derives media type */ 421 e1000_get_media_type_82575(hw); 422 /* Set mta register count */ 423 mac->mta_reg_count = 128; 424 /* Set uta register count */ 425 mac->uta_reg_count = (hw->mac.type == e1000_82575) ? 0 : 128; 426 /* Set rar entry count */ 427 mac->rar_entry_count = E1000_RAR_ENTRIES_82575; 428 if (mac->type == e1000_82576) 429 mac->rar_entry_count = E1000_RAR_ENTRIES_82576; 430 if (mac->type == e1000_82580) 431 mac->rar_entry_count = E1000_RAR_ENTRIES_82580; 432 if (mac->type == e1000_i350 || mac->type == e1000_i354) 433 mac->rar_entry_count = E1000_RAR_ENTRIES_I350; 434 435 /* Enable EEE default settings for EEE supported devices */ 436 if (mac->type >= e1000_i350) 437 dev_spec->eee_disable = FALSE; 438 439 /* Allow a single clear of the SW semaphore on I210 and newer */ 440 if (mac->type >= e1000_i210) 441 dev_spec->clear_semaphore_once = TRUE; 442 443 /* Set if part includes ASF firmware */ 444 mac->asf_firmware_present = TRUE; 445 /* FWSM register */ 446 mac->has_fwsm = TRUE; 447 /* ARC supported; valid only if manageability features are enabled. */ 448 mac->arc_subsystem_valid = 449 !!(E1000_READ_REG(hw, E1000_FWSM) & E1000_FWSM_MODE_MASK); 450 451 /* Function pointers */ 452 453 /* bus type/speed/width */ 454 mac->ops.get_bus_info = e1000_get_bus_info_pcie_generic; 455 /* reset */ 456 if (mac->type >= e1000_82580) 457 mac->ops.reset_hw = e1000_reset_hw_82580; 458 else 459 mac->ops.reset_hw = e1000_reset_hw_82575; 460 /* hw initialization */ 461 if ((mac->type == e1000_i210) || (mac->type == e1000_i211)) 462 mac->ops.init_hw = e1000_init_hw_i210; 463 else 464 mac->ops.init_hw = e1000_init_hw_82575; 465 /* link setup */ 466 mac->ops.setup_link = e1000_setup_link_generic; 467 /* physical interface link setup */ 468 mac->ops.setup_physical_interface = 469 (hw->phy.media_type == e1000_media_type_copper) 470 ? e1000_setup_copper_link_82575 : e1000_setup_serdes_link_82575; 471 /* physical interface shutdown */ 472 mac->ops.shutdown_serdes = e1000_shutdown_serdes_link_82575; 473 /* physical interface power up */ 474 mac->ops.power_up_serdes = e1000_power_up_serdes_link_82575; 475 /* check for link */ 476 mac->ops.check_for_link = e1000_check_for_link_82575; 477 /* read mac address */ 478 mac->ops.read_mac_addr = e1000_read_mac_addr_82575; 479 /* configure collision distance */ 480 mac->ops.config_collision_dist = e1000_config_collision_dist_82575; 481 /* multicast address update */ 482 mac->ops.update_mc_addr_list = e1000_update_mc_addr_list_generic; 483 if (hw->mac.type == e1000_i350 || mac->type == e1000_i354) { 484 /* writing VFTA */ 485 mac->ops.write_vfta = e1000_write_vfta_i350; 486 /* clearing VFTA */ 487 mac->ops.clear_vfta = e1000_clear_vfta_i350; 488 } else { 489 /* writing VFTA */ 490 mac->ops.write_vfta = e1000_write_vfta_generic; 491 /* clearing VFTA */ 492 mac->ops.clear_vfta = e1000_clear_vfta_generic; 493 } 494 if (hw->mac.type >= e1000_82580) 495 mac->ops.validate_mdi_setting = 496 e1000_validate_mdi_setting_crossover_generic; 497 /* ID LED init */ 498 mac->ops.id_led_init = e1000_id_led_init_generic; 499 /* blink LED */ 500 mac->ops.blink_led = e1000_blink_led_generic; 501 /* setup LED */ 502 mac->ops.setup_led = e1000_setup_led_generic; 503 /* cleanup LED */ 504 mac->ops.cleanup_led = e1000_cleanup_led_generic; 505 /* turn on/off LED */ 506 mac->ops.led_on = e1000_led_on_generic; 507 mac->ops.led_off = e1000_led_off_generic; 508 /* clear hardware counters */ 509 mac->ops.clear_hw_cntrs = e1000_clear_hw_cntrs_82575; 510 /* link info */ 511 mac->ops.get_link_up_info = e1000_get_link_up_info_82575; 512 /* acquire SW_FW sync */ 513 mac->ops.acquire_swfw_sync = e1000_acquire_swfw_sync; 514 mac->ops.release_swfw_sync = e1000_release_swfw_sync; 515 516 /* set lan id for port to determine which phy lock to use */ 517 hw->mac.ops.set_lan_id(hw); 518 519 return E1000_SUCCESS; 520} 521 522/** 523 * e1000_init_function_pointers_82575 - Init func ptrs. 524 * @hw: pointer to the HW structure 525 * 526 * Called to initialize all function pointers and parameters. 527 **/ 528void e1000_init_function_pointers_82575(struct e1000_hw *hw) 529{ 530 DEBUGFUNC("e1000_init_function_pointers_82575"); 531 532 hw->mac.ops.init_params = e1000_init_mac_params_82575; 533 hw->nvm.ops.init_params = e1000_init_nvm_params_82575; 534 hw->phy.ops.init_params = e1000_init_phy_params_82575; 535 hw->mbx.ops.init_params = e1000_init_mbx_params_pf; 536} 537 538/** 539 * e1000_acquire_phy_82575 - Acquire rights to access PHY 540 * @hw: pointer to the HW structure 541 * 542 * Acquire access rights to the correct PHY. 543 **/ 544static s32 e1000_acquire_phy_82575(struct e1000_hw *hw) 545{ 546 u16 mask = E1000_SWFW_PHY0_SM; 547 548 DEBUGFUNC("e1000_acquire_phy_82575"); 549 550 if (hw->bus.func == E1000_FUNC_1) 551 mask = E1000_SWFW_PHY1_SM; 552 else if (hw->bus.func == E1000_FUNC_2) 553 mask = E1000_SWFW_PHY2_SM; 554 else if (hw->bus.func == E1000_FUNC_3) 555 mask = E1000_SWFW_PHY3_SM; 556 557 return hw->mac.ops.acquire_swfw_sync(hw, mask); 558} 559 560/** 561 * e1000_release_phy_82575 - Release rights to access PHY 562 * @hw: pointer to the HW structure 563 * 564 * A wrapper to release access rights to the correct PHY. 565 **/ 566static void e1000_release_phy_82575(struct e1000_hw *hw) 567{ 568 u16 mask = E1000_SWFW_PHY0_SM; 569 570 DEBUGFUNC("e1000_release_phy_82575"); 571 572 if (hw->bus.func == E1000_FUNC_1) 573 mask = E1000_SWFW_PHY1_SM; 574 else if (hw->bus.func == E1000_FUNC_2) 575 mask = E1000_SWFW_PHY2_SM; 576 else if (hw->bus.func == E1000_FUNC_3) 577 mask = E1000_SWFW_PHY3_SM; 578 579 hw->mac.ops.release_swfw_sync(hw, mask); 580} 581 582/** 583 * e1000_read_phy_reg_sgmii_82575 - Read PHY register using sgmii 584 * @hw: pointer to the HW structure 585 * @offset: register offset to be read 586 * @data: pointer to the read data 587 * 588 * Reads the PHY register at offset using the serial gigabit media independent 589 * interface and stores the retrieved information in data. 590 **/ 591static s32 e1000_read_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset, 592 u16 *data) 593{ 594 s32 ret_val = -E1000_ERR_PARAM; 595 596 DEBUGFUNC("e1000_read_phy_reg_sgmii_82575"); 597 598 if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) { 599 DEBUGOUT1("PHY Address %u is out of range\n", offset); 600 goto out; 601 } 602 603 ret_val = hw->phy.ops.acquire(hw); 604 if (ret_val) 605 goto out; 606 607 ret_val = e1000_read_phy_reg_i2c(hw, offset, data); 608 609 hw->phy.ops.release(hw); 610 611out: 612 return ret_val; 613} 614 615/** 616 * e1000_write_phy_reg_sgmii_82575 - Write PHY register using sgmii 617 * @hw: pointer to the HW structure 618 * @offset: register offset to write to 619 * @data: data to write at register offset 620 * 621 * Writes the data to PHY register at the offset using the serial gigabit 622 * media independent interface. 623 **/ 624static s32 e1000_write_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset, 625 u16 data) 626{ 627 s32 ret_val = -E1000_ERR_PARAM; 628 629 DEBUGFUNC("e1000_write_phy_reg_sgmii_82575"); 630 631 if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) { 632 DEBUGOUT1("PHY Address %d is out of range\n", offset); 633 goto out; 634 } 635 636 ret_val = hw->phy.ops.acquire(hw); 637 if (ret_val) 638 goto out; 639 640 ret_val = e1000_write_phy_reg_i2c(hw, offset, data); 641 642 hw->phy.ops.release(hw); 643 644out: 645 return ret_val; 646} 647 648/** 649 * e1000_get_phy_id_82575 - Retrieve PHY addr and id 650 * @hw: pointer to the HW structure 651 * 652 * Retrieves the PHY address and ID for both PHY's which do and do not use 653 * sgmi interface. 654 **/ 655static s32 e1000_get_phy_id_82575(struct e1000_hw *hw) 656{ 657 struct e1000_phy_info *phy = &hw->phy; 658 s32 ret_val = E1000_SUCCESS; 659 u16 phy_id; 660 u32 ctrl_ext; 661 u32 mdic; 662 663 DEBUGFUNC("e1000_get_phy_id_82575"); 664 665 /* some i354 devices need an extra read for phy id */ 666 if (hw->mac.type == e1000_i354) 667 e1000_get_phy_id(hw); 668 669 /* 670 * For SGMII PHYs, we try the list of possible addresses until 671 * we find one that works. For non-SGMII PHYs 672 * (e.g. integrated copper PHYs), an address of 1 should 673 * work. The result of this function should mean phy->phy_addr 674 * and phy->id are set correctly. 675 */ 676 if (!e1000_sgmii_active_82575(hw)) { 677 phy->addr = 1; 678 ret_val = e1000_get_phy_id(hw); 679 goto out; 680 } 681 682 if (e1000_sgmii_uses_mdio_82575(hw)) { 683 switch (hw->mac.type) { 684 case e1000_82575: 685 case e1000_82576: 686 mdic = E1000_READ_REG(hw, E1000_MDIC); 687 mdic &= E1000_MDIC_PHY_MASK; 688 phy->addr = mdic >> E1000_MDIC_PHY_SHIFT; 689 break; 690 case e1000_82580: 691 case e1000_i350: 692 case e1000_i354: 693 case e1000_i210: 694 case e1000_i211: 695 mdic = E1000_READ_REG(hw, E1000_MDICNFG); 696 mdic &= E1000_MDICNFG_PHY_MASK; 697 phy->addr = mdic >> E1000_MDICNFG_PHY_SHIFT; 698 break; 699 default: 700 ret_val = -E1000_ERR_PHY; 701 goto out; 702 break; 703 } 704 ret_val = e1000_get_phy_id(hw); 705 goto out; 706 } 707 708 /* Power on sgmii phy if it is disabled */ 709 ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT); 710 E1000_WRITE_REG(hw, E1000_CTRL_EXT, 711 ctrl_ext & ~E1000_CTRL_EXT_SDP3_DATA); 712 E1000_WRITE_FLUSH(hw); 713 msec_delay(300); 714 715 /* 716 * The address field in the I2CCMD register is 3 bits and 0 is invalid. 717 * Therefore, we need to test 1-7 718 */ 719 for (phy->addr = 1; phy->addr < 8; phy->addr++) { 720 ret_val = e1000_read_phy_reg_sgmii_82575(hw, PHY_ID1, &phy_id); 721 if (ret_val == E1000_SUCCESS) { 722 DEBUGOUT2("Vendor ID 0x%08X read at address %u\n", 723 phy_id, phy->addr); 724 /* 725 * At the time of this writing, The M88 part is 726 * the only supported SGMII PHY product. 727 */ 728 if (phy_id == M88_VENDOR) 729 break; 730 } else { 731 DEBUGOUT1("PHY address %u was unreadable\n", 732 phy->addr); 733 } 734 } 735 736 /* A valid PHY type couldn't be found. */ 737 if (phy->addr == 8) { 738 phy->addr = 0; 739 ret_val = -E1000_ERR_PHY; 740 } else { 741 ret_val = e1000_get_phy_id(hw); 742 } 743 744 /* restore previous sfp cage power state */ 745 E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext); 746 747out: 748 return ret_val; 749} 750 751/** 752 * e1000_phy_hw_reset_sgmii_82575 - Performs a PHY reset 753 * @hw: pointer to the HW structure 754 * 755 * Resets the PHY using the serial gigabit media independent interface. 756 **/ 757static s32 e1000_phy_hw_reset_sgmii_82575(struct e1000_hw *hw) 758{ 759 s32 ret_val = E1000_SUCCESS; 760 struct e1000_phy_info *phy = &hw->phy; 761 762 DEBUGFUNC("e1000_phy_hw_reset_sgmii_82575"); 763 764 /* 765 * This isn't a TRUE "hard" reset, but is the only reset 766 * available to us at this time. 767 */ 768 769 DEBUGOUT("Soft resetting SGMII attached PHY...\n"); 770 771 if (!(hw->phy.ops.write_reg)) 772 goto out; 773 774 /* 775 * SFP documentation requires the following to configure the SPF module 776 * to work on SGMII. No further documentation is given. 777 */ 778 ret_val = hw->phy.ops.write_reg(hw, 0x1B, 0x8084); 779 if (ret_val) 780 goto out; 781 782 ret_val = hw->phy.ops.commit(hw); 783 if (ret_val) 784 goto out; 785 786 if (phy->id == M88E1512_E_PHY_ID) 787 ret_val = e1000_initialize_M88E1512_phy(hw); 788out: 789 return ret_val; 790} 791 792/** 793 * e1000_set_d0_lplu_state_82575 - Set Low Power Linkup D0 state 794 * @hw: pointer to the HW structure 795 * @active: TRUE to enable LPLU, FALSE to disable 796 * 797 * Sets the LPLU D0 state according to the active flag. When 798 * activating LPLU this function also disables smart speed 799 * and vice versa. LPLU will not be activated unless the 800 * device autonegotiation advertisement meets standards of 801 * either 10 or 10/100 or 10/100/1000 at all duplexes. 802 * This is a function pointer entry point only called by 803 * PHY setup routines. 804 **/ 805static s32 e1000_set_d0_lplu_state_82575(struct e1000_hw *hw, bool active) 806{ 807 struct e1000_phy_info *phy = &hw->phy; 808 s32 ret_val = E1000_SUCCESS; 809 u16 data; 810 811 DEBUGFUNC("e1000_set_d0_lplu_state_82575"); 812 813 if (!(hw->phy.ops.read_reg)) 814 goto out; 815 816 ret_val = phy->ops.read_reg(hw, IGP02E1000_PHY_POWER_MGMT, &data); 817 if (ret_val) 818 goto out; 819 820 if (active) { 821 data |= IGP02E1000_PM_D0_LPLU; 822 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT, 823 data); 824 if (ret_val) 825 goto out; 826 827 /* When LPLU is enabled, we should disable SmartSpeed */ 828 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CONFIG, 829 &data); 830 data &= ~IGP01E1000_PSCFR_SMART_SPEED; 831 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CONFIG, 832 data); 833 if (ret_val) 834 goto out; 835 } else { 836 data &= ~IGP02E1000_PM_D0_LPLU; 837 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT, 838 data); 839 /* 840 * LPLU and SmartSpeed are mutually exclusive. LPLU is used 841 * during Dx states where the power conservation is most 842 * important. During driver activity we should enable 843 * SmartSpeed, so performance is maintained. 844 */ 845 if (phy->smart_speed == e1000_smart_speed_on) { 846 ret_val = phy->ops.read_reg(hw, 847 IGP01E1000_PHY_PORT_CONFIG, 848 &data); 849 if (ret_val) 850 goto out; 851 852 data |= IGP01E1000_PSCFR_SMART_SPEED; 853 ret_val = phy->ops.write_reg(hw, 854 IGP01E1000_PHY_PORT_CONFIG, 855 data); 856 if (ret_val) 857 goto out; 858 } else if (phy->smart_speed == e1000_smart_speed_off) { 859 ret_val = phy->ops.read_reg(hw, 860 IGP01E1000_PHY_PORT_CONFIG, 861 &data); 862 if (ret_val) 863 goto out; 864 865 data &= ~IGP01E1000_PSCFR_SMART_SPEED; 866 ret_val = phy->ops.write_reg(hw, 867 IGP01E1000_PHY_PORT_CONFIG, 868 data); 869 if (ret_val) 870 goto out; 871 } 872 } 873 874out: 875 return ret_val; 876} 877 878/** 879 * e1000_set_d0_lplu_state_82580 - Set Low Power Linkup D0 state 880 * @hw: pointer to the HW structure 881 * @active: TRUE to enable LPLU, FALSE to disable 882 * 883 * Sets the LPLU D0 state according to the active flag. When 884 * activating LPLU this function also disables smart speed 885 * and vice versa. LPLU will not be activated unless the 886 * device autonegotiation advertisement meets standards of 887 * either 10 or 10/100 or 10/100/1000 at all duplexes. 888 * This is a function pointer entry point only called by 889 * PHY setup routines. 890 **/ 891static s32 e1000_set_d0_lplu_state_82580(struct e1000_hw *hw, bool active) 892{ 893 struct e1000_phy_info *phy = &hw->phy; 894 u32 data; 895 896 DEBUGFUNC("e1000_set_d0_lplu_state_82580"); 897 898 data = E1000_READ_REG(hw, E1000_82580_PHY_POWER_MGMT); 899 900 if (active) { 901 data |= E1000_82580_PM_D0_LPLU; 902 903 /* When LPLU is enabled, we should disable SmartSpeed */ 904 data &= ~E1000_82580_PM_SPD; 905 } else { 906 data &= ~E1000_82580_PM_D0_LPLU; 907 908 /* 909 * LPLU and SmartSpeed are mutually exclusive. LPLU is used 910 * during Dx states where the power conservation is most 911 * important. During driver activity we should enable 912 * SmartSpeed, so performance is maintained. 913 */ 914 if (phy->smart_speed == e1000_smart_speed_on) 915 data |= E1000_82580_PM_SPD; 916 else if (phy->smart_speed == e1000_smart_speed_off) 917 data &= ~E1000_82580_PM_SPD; 918 } 919 920 E1000_WRITE_REG(hw, E1000_82580_PHY_POWER_MGMT, data); 921 return E1000_SUCCESS; 922} 923 924/** 925 * e1000_set_d3_lplu_state_82580 - Sets low power link up state for D3 926 * @hw: pointer to the HW structure 927 * @active: boolean used to enable/disable lplu 928 * 929 * Success returns 0, Failure returns 1 930 * 931 * The low power link up (lplu) state is set to the power management level D3 932 * and SmartSpeed is disabled when active is TRUE, else clear lplu for D3 933 * and enable Smartspeed. LPLU and Smartspeed are mutually exclusive. LPLU 934 * is used during Dx states where the power conservation is most important. 935 * During driver activity, SmartSpeed should be enabled so performance is 936 * maintained. 937 **/ 938s32 e1000_set_d3_lplu_state_82580(struct e1000_hw *hw, bool active) 939{ 940 struct e1000_phy_info *phy = &hw->phy; 941 u32 data; 942 943 DEBUGFUNC("e1000_set_d3_lplu_state_82580"); 944 945 data = E1000_READ_REG(hw, E1000_82580_PHY_POWER_MGMT); 946 947 if (!active) { 948 data &= ~E1000_82580_PM_D3_LPLU; 949 /* 950 * LPLU and SmartSpeed are mutually exclusive. LPLU is used 951 * during Dx states where the power conservation is most 952 * important. During driver activity we should enable 953 * SmartSpeed, so performance is maintained. 954 */ 955 if (phy->smart_speed == e1000_smart_speed_on) 956 data |= E1000_82580_PM_SPD; 957 else if (phy->smart_speed == e1000_smart_speed_off) 958 data &= ~E1000_82580_PM_SPD; 959 } else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) || 960 (phy->autoneg_advertised == E1000_ALL_NOT_GIG) || 961 (phy->autoneg_advertised == E1000_ALL_10_SPEED)) { 962 data |= E1000_82580_PM_D3_LPLU; 963 /* When LPLU is enabled, we should disable SmartSpeed */ 964 data &= ~E1000_82580_PM_SPD; 965 } 966 967 E1000_WRITE_REG(hw, E1000_82580_PHY_POWER_MGMT, data); 968 return E1000_SUCCESS; 969} 970 971/** 972 * e1000_acquire_nvm_82575 - Request for access to EEPROM 973 * @hw: pointer to the HW structure 974 * 975 * Acquire the necessary semaphores for exclusive access to the EEPROM. 976 * Set the EEPROM access request bit and wait for EEPROM access grant bit. 977 * Return successful if access grant bit set, else clear the request for 978 * EEPROM access and return -E1000_ERR_NVM (-1). 979 **/ 980static s32 e1000_acquire_nvm_82575(struct e1000_hw *hw) 981{ 982 s32 ret_val = E1000_SUCCESS; 983 984 DEBUGFUNC("e1000_acquire_nvm_82575"); 985 986 ret_val = e1000_acquire_swfw_sync(hw, E1000_SWFW_EEP_SM); 987 if (ret_val) 988 goto out; 989 990 /* 991 * Check if there is some access 992 * error this access may hook on 993 */ 994 if (hw->mac.type == e1000_i350) { 995 u32 eecd = E1000_READ_REG(hw, E1000_EECD); 996 if (eecd & (E1000_EECD_BLOCKED | E1000_EECD_ABORT | 997 E1000_EECD_TIMEOUT)) { 998 /* Clear all access error flags */ 999 E1000_WRITE_REG(hw, E1000_EECD, eecd | 1000 E1000_EECD_ERROR_CLR); 1001 DEBUGOUT("Nvm bit banging access error detected and cleared.\n"); 1002 } 1003 } 1004 1005 if (hw->mac.type == e1000_82580) { 1006 u32 eecd = E1000_READ_REG(hw, E1000_EECD); 1007 if (eecd & E1000_EECD_BLOCKED) { 1008 /* Clear access error flag */ 1009 E1000_WRITE_REG(hw, E1000_EECD, eecd | 1010 E1000_EECD_BLOCKED); 1011 DEBUGOUT("Nvm bit banging access error detected and cleared.\n"); 1012 } 1013 } 1014 1015 ret_val = e1000_acquire_nvm_generic(hw); 1016 if (ret_val) 1017 e1000_release_swfw_sync(hw, E1000_SWFW_EEP_SM); 1018 1019out: 1020 return ret_val; 1021} 1022 1023/** 1024 * e1000_release_nvm_82575 - Release exclusive access to EEPROM 1025 * @hw: pointer to the HW structure 1026 * 1027 * Stop any current commands to the EEPROM and clear the EEPROM request bit, 1028 * then release the semaphores acquired. 1029 **/ 1030static void e1000_release_nvm_82575(struct e1000_hw *hw) 1031{ 1032 DEBUGFUNC("e1000_release_nvm_82575"); 1033 1034 e1000_release_nvm_generic(hw); 1035 1036 e1000_release_swfw_sync(hw, E1000_SWFW_EEP_SM); 1037} 1038 1039/** 1040 * e1000_get_cfg_done_82575 - Read config done bit 1041 * @hw: pointer to the HW structure 1042 * 1043 * Read the management control register for the config done bit for 1044 * completion status. NOTE: silicon which is EEPROM-less will fail trying 1045 * to read the config done bit, so an error is *ONLY* logged and returns 1046 * E1000_SUCCESS. If we were to return with error, EEPROM-less silicon 1047 * would not be able to be reset or change link. 1048 **/ 1049static s32 e1000_get_cfg_done_82575(struct e1000_hw *hw) 1050{ 1051 s32 timeout = PHY_CFG_TIMEOUT; 1052 u32 mask = E1000_NVM_CFG_DONE_PORT_0; 1053 1054 DEBUGFUNC("e1000_get_cfg_done_82575"); 1055 1056 if (hw->bus.func == E1000_FUNC_1) 1057 mask = E1000_NVM_CFG_DONE_PORT_1; 1058 else if (hw->bus.func == E1000_FUNC_2) 1059 mask = E1000_NVM_CFG_DONE_PORT_2; 1060 else if (hw->bus.func == E1000_FUNC_3) 1061 mask = E1000_NVM_CFG_DONE_PORT_3; 1062 while (timeout) { 1063 if (E1000_READ_REG(hw, E1000_EEMNGCTL) & mask) 1064 break; 1065 msec_delay(1); 1066 timeout--; 1067 } 1068 if (!timeout) 1069 DEBUGOUT("MNG configuration cycle has not completed.\n"); 1070 1071 /* If EEPROM is not marked present, init the PHY manually */ 1072 if (!(E1000_READ_REG(hw, E1000_EECD) & E1000_EECD_PRES) && 1073 (hw->phy.type == e1000_phy_igp_3)) 1074 e1000_phy_init_script_igp3(hw); 1075 1076 return E1000_SUCCESS; 1077} 1078 1079/** 1080 * e1000_get_link_up_info_82575 - Get link speed/duplex info 1081 * @hw: pointer to the HW structure 1082 * @speed: stores the current speed 1083 * @duplex: stores the current duplex 1084 * 1085 * This is a wrapper function, if using the serial gigabit media independent 1086 * interface, use PCS to retrieve the link speed and duplex information. 1087 * Otherwise, use the generic function to get the link speed and duplex info. 1088 **/ 1089static s32 e1000_get_link_up_info_82575(struct e1000_hw *hw, u16 *speed, 1090 u16 *duplex) 1091{ 1092 s32 ret_val; 1093 1094 DEBUGFUNC("e1000_get_link_up_info_82575"); 1095 1096 if (hw->phy.media_type != e1000_media_type_copper) 1097 ret_val = e1000_get_pcs_speed_and_duplex_82575(hw, speed, 1098 duplex); 1099 else 1100 ret_val = e1000_get_speed_and_duplex_copper_generic(hw, speed, 1101 duplex); 1102 1103 return ret_val; 1104} 1105 1106/** 1107 * e1000_check_for_link_82575 - Check for link 1108 * @hw: pointer to the HW structure 1109 * 1110 * If sgmii is enabled, then use the pcs register to determine link, otherwise 1111 * use the generic interface for determining link. 1112 **/ 1113static s32 e1000_check_for_link_82575(struct e1000_hw *hw) 1114{ 1115 s32 ret_val; 1116 u16 speed, duplex; 1117 1118 DEBUGFUNC("e1000_check_for_link_82575"); 1119 1120 if (hw->phy.media_type != e1000_media_type_copper) { 1121 ret_val = e1000_get_pcs_speed_and_duplex_82575(hw, &speed, 1122 &duplex); 1123 /* 1124 * Use this flag to determine if link needs to be checked or 1125 * not. If we have link clear the flag so that we do not 1126 * continue to check for link. 1127 */ 1128 hw->mac.get_link_status = !hw->mac.serdes_has_link; 1129 1130 /* 1131 * Configure Flow Control now that Auto-Neg has completed. 1132 * First, we need to restore the desired flow control 1133 * settings because we may have had to re-autoneg with a 1134 * different link partner. 1135 */ 1136 ret_val = e1000_config_fc_after_link_up_generic(hw); 1137 if (ret_val) 1138 DEBUGOUT("Error configuring flow control\n"); 1139 } else { 1140 ret_val = e1000_check_for_copper_link_generic(hw); 1141 } 1142 1143 return ret_val; 1144} 1145 1146/** 1147 * e1000_check_for_link_media_swap - Check which M88E1112 interface linked 1148 * @hw: pointer to the HW structure 1149 * 1150 * Poll the M88E1112 interfaces to see which interface achieved link. 1151 */ 1152static s32 e1000_check_for_link_media_swap(struct e1000_hw *hw) 1153{ 1154 struct e1000_phy_info *phy = &hw->phy; 1155 s32 ret_val; 1156 u16 data; 1157 u8 port = 0; 1158 1159 DEBUGFUNC("e1000_check_for_link_media_swap"); 1160 1161 /* Check for copper. */ 1162 ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 0); 1163 if (ret_val) 1164 return ret_val; 1165 1166 ret_val = phy->ops.read_reg(hw, E1000_M88E1112_STATUS, &data); 1167 if (ret_val) 1168 return ret_val; 1169 1170 if (data & E1000_M88E1112_STATUS_LINK) 1171 port = E1000_MEDIA_PORT_COPPER; 1172 1173 /* Check for other. */ 1174 ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 1); 1175 if (ret_val) 1176 return ret_val; 1177 1178 ret_val = phy->ops.read_reg(hw, E1000_M88E1112_STATUS, &data); 1179 if (ret_val) 1180 return ret_val; 1181 1182 if (data & E1000_M88E1112_STATUS_LINK) 1183 port = E1000_MEDIA_PORT_OTHER; 1184 1185 /* Determine if a swap needs to happen. */ 1186 if (port && (hw->dev_spec._82575.media_port != port)) { 1187 hw->dev_spec._82575.media_port = port; 1188 hw->dev_spec._82575.media_changed = TRUE; 1189 } 1190 1191 if (port == E1000_MEDIA_PORT_COPPER) { 1192 /* reset page to 0 */ 1193 ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 0); 1194 if (ret_val) 1195 return ret_val; 1196 e1000_check_for_link_82575(hw); 1197 } else { 1198 e1000_check_for_link_82575(hw); 1199 /* reset page to 0 */ 1200 ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 0); 1201 if (ret_val) 1202 return ret_val; 1203 } 1204 1205 return E1000_SUCCESS; 1206} 1207 1208/** 1209 * e1000_power_up_serdes_link_82575 - Power up the serdes link after shutdown 1210 * @hw: pointer to the HW structure 1211 **/ 1212static void e1000_power_up_serdes_link_82575(struct e1000_hw *hw) 1213{ 1214 u32 reg; 1215 1216 DEBUGFUNC("e1000_power_up_serdes_link_82575"); 1217 1218 if ((hw->phy.media_type != e1000_media_type_internal_serdes) && 1219 !e1000_sgmii_active_82575(hw)) 1220 return; 1221 1222 /* Enable PCS to turn on link */ 1223 reg = E1000_READ_REG(hw, E1000_PCS_CFG0); 1224 reg |= E1000_PCS_CFG_PCS_EN; 1225 E1000_WRITE_REG(hw, E1000_PCS_CFG0, reg); 1226 1227 /* Power up the laser */ 1228 reg = E1000_READ_REG(hw, E1000_CTRL_EXT); 1229 reg &= ~E1000_CTRL_EXT_SDP3_DATA; 1230 E1000_WRITE_REG(hw, E1000_CTRL_EXT, reg); 1231 1232 /* flush the write to verify completion */ 1233 E1000_WRITE_FLUSH(hw); 1234 msec_delay(1); 1235} 1236 1237/** 1238 * e1000_get_pcs_speed_and_duplex_82575 - Retrieve current speed/duplex 1239 * @hw: pointer to the HW structure 1240 * @speed: stores the current speed 1241 * @duplex: stores the current duplex 1242 * 1243 * Using the physical coding sub-layer (PCS), retrieve the current speed and 1244 * duplex, then store the values in the pointers provided. 1245 **/ 1246static s32 e1000_get_pcs_speed_and_duplex_82575(struct e1000_hw *hw, 1247 u16 *speed, u16 *duplex) 1248{ 1249 struct e1000_mac_info *mac = &hw->mac; 1250 u32 pcs; 1251 u32 status; 1252 1253 DEBUGFUNC("e1000_get_pcs_speed_and_duplex_82575"); 1254 1255 /* 1256 * Read the PCS Status register for link state. For non-copper mode, 1257 * the status register is not accurate. The PCS status register is 1258 * used instead. 1259 */ 1260 pcs = E1000_READ_REG(hw, E1000_PCS_LSTAT); 1261 1262 /* 1263 * The link up bit determines when link is up on autoneg. 1264 */ 1265 if (pcs & E1000_PCS_LSTS_LINK_OK) { 1266 mac->serdes_has_link = TRUE; 1267 1268 /* Detect and store PCS speed */ 1269 if (pcs & E1000_PCS_LSTS_SPEED_1000) 1270 *speed = SPEED_1000; 1271 else if (pcs & E1000_PCS_LSTS_SPEED_100) 1272 *speed = SPEED_100; 1273 else 1274 *speed = SPEED_10; 1275 1276 /* Detect and store PCS duplex */ 1277 if (pcs & E1000_PCS_LSTS_DUPLEX_FULL) 1278 *duplex = FULL_DUPLEX; 1279 else 1280 *duplex = HALF_DUPLEX; 1281 1282 /* Check if it is an I354 2.5Gb backplane connection. */ 1283 if (mac->type == e1000_i354) { 1284 status = E1000_READ_REG(hw, E1000_STATUS); 1285 if ((status & E1000_STATUS_2P5_SKU) && 1286 !(status & E1000_STATUS_2P5_SKU_OVER)) { 1287 *speed = SPEED_2500; 1288 *duplex = FULL_DUPLEX; 1289 DEBUGOUT("2500 Mbs, "); 1290 DEBUGOUT("Full Duplex\n"); 1291 } 1292 } 1293 1294 } else { 1295 mac->serdes_has_link = FALSE; 1296 *speed = 0; 1297 *duplex = 0; 1298 } 1299 1300 return E1000_SUCCESS; 1301} 1302 1303/** 1304 * e1000_shutdown_serdes_link_82575 - Remove link during power down 1305 * @hw: pointer to the HW structure 1306 * 1307 * In the case of serdes shut down sfp and PCS on driver unload 1308 * when management pass thru is not enabled. 1309 **/ 1310void e1000_shutdown_serdes_link_82575(struct e1000_hw *hw) 1311{ 1312 u32 reg; 1313 1314 DEBUGFUNC("e1000_shutdown_serdes_link_82575"); 1315 1316 if ((hw->phy.media_type != e1000_media_type_internal_serdes) && 1317 !e1000_sgmii_active_82575(hw)) 1318 return; 1319 1320 if (!e1000_enable_mng_pass_thru(hw)) { 1321 /* Disable PCS to turn off link */ 1322 reg = E1000_READ_REG(hw, E1000_PCS_CFG0); 1323 reg &= ~E1000_PCS_CFG_PCS_EN; 1324 E1000_WRITE_REG(hw, E1000_PCS_CFG0, reg); 1325 1326 /* shutdown the laser */ 1327 reg = E1000_READ_REG(hw, E1000_CTRL_EXT); 1328 reg |= E1000_CTRL_EXT_SDP3_DATA; 1329 E1000_WRITE_REG(hw, E1000_CTRL_EXT, reg); 1330 1331 /* flush the write to verify completion */ 1332 E1000_WRITE_FLUSH(hw); 1333 msec_delay(1); 1334 } 1335 1336 return; 1337} 1338 1339/** 1340 * e1000_reset_hw_82575 - Reset hardware 1341 * @hw: pointer to the HW structure 1342 * 1343 * This resets the hardware into a known state. 1344 **/ 1345static s32 e1000_reset_hw_82575(struct e1000_hw *hw) 1346{ 1347 u32 ctrl; 1348 s32 ret_val; 1349 1350 DEBUGFUNC("e1000_reset_hw_82575"); 1351 1352 /* 1353 * Prevent the PCI-E bus from sticking if there is no TLP connection 1354 * on the last TLP read/write transaction when MAC is reset. 1355 */ 1356 ret_val = e1000_disable_pcie_master_generic(hw); 1357 if (ret_val) 1358 DEBUGOUT("PCI-E Master disable polling has failed.\n"); 1359 1360 /* set the completion timeout for interface */ 1361 ret_val = e1000_set_pcie_completion_timeout(hw); 1362 if (ret_val) 1363 DEBUGOUT("PCI-E Set completion timeout has failed.\n"); 1364 1365 DEBUGOUT("Masking off all interrupts\n"); 1366 E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff); 1367 1368 E1000_WRITE_REG(hw, E1000_RCTL, 0); 1369 E1000_WRITE_REG(hw, E1000_TCTL, E1000_TCTL_PSP); 1370 E1000_WRITE_FLUSH(hw); 1371 1372 msec_delay(10); 1373 1374 ctrl = E1000_READ_REG(hw, E1000_CTRL); 1375 1376 DEBUGOUT("Issuing a global reset to MAC\n"); 1377 E1000_WRITE_REG(hw, E1000_CTRL, ctrl | E1000_CTRL_RST); 1378 1379 ret_val = e1000_get_auto_rd_done_generic(hw); 1380 if (ret_val) { 1381 /* 1382 * When auto config read does not complete, do not 1383 * return with an error. This can happen in situations 1384 * where there is no eeprom and prevents getting link. 1385 */ 1386 DEBUGOUT("Auto Read Done did not complete\n"); 1387 } 1388 1389 /* If EEPROM is not present, run manual init scripts */ 1390 if (!(E1000_READ_REG(hw, E1000_EECD) & E1000_EECD_PRES)) 1391 e1000_reset_init_script_82575(hw); 1392 1393 /* Clear any pending interrupt events. */ 1394 E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff); 1395 E1000_READ_REG(hw, E1000_ICR); 1396 1397 /* Install any alternate MAC address into RAR0 */ 1398 ret_val = e1000_check_alt_mac_addr_generic(hw); 1399 1400 return ret_val; 1401} 1402 1403/** 1404 * e1000_init_hw_82575 - Initialize hardware 1405 * @hw: pointer to the HW structure 1406 * 1407 * This inits the hardware readying it for operation. 1408 **/ 1409s32 e1000_init_hw_82575(struct e1000_hw *hw) 1410{ 1411 struct e1000_mac_info *mac = &hw->mac; 1412 s32 ret_val; 1413 u16 i, rar_count = mac->rar_entry_count; 1414 1415 DEBUGFUNC("e1000_init_hw_82575"); 1416 1417 /* Initialize identification LED */ 1418 ret_val = mac->ops.id_led_init(hw); 1419 if (ret_val) { 1420 DEBUGOUT("Error initializing identification LED\n"); 1421 /* This is not fatal and we should not stop init due to this */ 1422 } 1423 1424 /* Disabling VLAN filtering */ 1425 DEBUGOUT("Initializing the IEEE VLAN\n"); 1426 mac->ops.clear_vfta(hw); 1427 1428 /* Setup the receive address */ 1429 e1000_init_rx_addrs_generic(hw, rar_count); 1430 1431 /* Zero out the Multicast HASH table */ 1432 DEBUGOUT("Zeroing the MTA\n"); 1433 for (i = 0; i < mac->mta_reg_count; i++) 1434 E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0); 1435 1436 /* Zero out the Unicast HASH table */ 1437 DEBUGOUT("Zeroing the UTA\n"); 1438 for (i = 0; i < mac->uta_reg_count; i++) 1439 E1000_WRITE_REG_ARRAY(hw, E1000_UTA, i, 0); 1440 1441 /* Setup link and flow control */ 1442 ret_val = mac->ops.setup_link(hw); 1443 1444 /* Set the default MTU size */ 1445 hw->dev_spec._82575.mtu = 1500; 1446 1447 /* 1448 * Clear all of the statistics registers (clear on read). It is 1449 * important that we do this after we have tried to establish link 1450 * because the symbol error count will increment wildly if there 1451 * is no link. 1452 */ 1453 e1000_clear_hw_cntrs_82575(hw); 1454 1455 return ret_val; 1456} 1457 1458/** 1459 * e1000_setup_copper_link_82575 - Configure copper link settings 1460 * @hw: pointer to the HW structure 1461 * 1462 * Configures the link for auto-neg or forced speed and duplex. Then we check 1463 * for link, once link is established calls to configure collision distance 1464 * and flow control are called. 1465 **/ 1466static s32 e1000_setup_copper_link_82575(struct e1000_hw *hw) 1467{ 1468 u32 ctrl; 1469 s32 ret_val; 1470 u32 phpm_reg; 1471 1472 DEBUGFUNC("e1000_setup_copper_link_82575"); 1473 1474 ctrl = E1000_READ_REG(hw, E1000_CTRL); 1475 ctrl |= E1000_CTRL_SLU; 1476 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); 1477 E1000_WRITE_REG(hw, E1000_CTRL, ctrl); 1478 1479 /* Clear Go Link Disconnect bit on supported devices */ 1480 switch (hw->mac.type) { 1481 case e1000_82580: 1482 case e1000_i350: 1483 case e1000_i210: 1484 case e1000_i211: 1485 phpm_reg = E1000_READ_REG(hw, E1000_82580_PHY_POWER_MGMT); 1486 phpm_reg &= ~E1000_82580_PM_GO_LINKD; 1487 E1000_WRITE_REG(hw, E1000_82580_PHY_POWER_MGMT, phpm_reg); 1488 break; 1489 default: 1490 break; 1491 } 1492 1493 ret_val = e1000_setup_serdes_link_82575(hw); 1494 if (ret_val) 1495 goto out; 1496 1497 if (e1000_sgmii_active_82575(hw)) { 1498 /* allow time for SFP cage time to power up phy */ 1499 msec_delay(300); 1500 1501 ret_val = hw->phy.ops.reset(hw); 1502 if (ret_val) { 1503 DEBUGOUT("Error resetting the PHY.\n"); 1504 goto out; 1505 } 1506 } 1507 switch (hw->phy.type) { 1508 case e1000_phy_i210: 1509 case e1000_phy_m88: 1510 switch (hw->phy.id) { 1511 case I347AT4_E_PHY_ID: 1512 case M88E1112_E_PHY_ID: 1513 case M88E1340M_E_PHY_ID: 1514 case M88E1543_E_PHY_ID: 1515 case M88E1512_E_PHY_ID: 1516 case I210_I_PHY_ID: 1517 ret_val = e1000_copper_link_setup_m88_gen2(hw); 1518 break; 1519 default: 1520 ret_val = e1000_copper_link_setup_m88(hw); 1521 break; 1522 } 1523 break; 1524 case e1000_phy_igp_3: 1525 ret_val = e1000_copper_link_setup_igp(hw); 1526 break; 1527 case e1000_phy_82580: 1528 ret_val = e1000_copper_link_setup_82577(hw); 1529 break; 1530 default: 1531 ret_val = -E1000_ERR_PHY; 1532 break; 1533 } 1534 1535 if (ret_val) 1536 goto out; 1537 1538 ret_val = e1000_setup_copper_link_generic(hw); 1539out: 1540 return ret_val; 1541} 1542 1543/** 1544 * e1000_setup_serdes_link_82575 - Setup link for serdes 1545 * @hw: pointer to the HW structure 1546 * 1547 * Configure the physical coding sub-layer (PCS) link. The PCS link is 1548 * used on copper connections where the serialized gigabit media independent 1549 * interface (sgmii), or serdes fiber is being used. Configures the link 1550 * for auto-negotiation or forces speed/duplex. 1551 **/ 1552static s32 e1000_setup_serdes_link_82575(struct e1000_hw *hw) 1553{ 1554 u32 ctrl_ext, ctrl_reg, reg, anadv_reg; 1555 bool pcs_autoneg; 1556 s32 ret_val = E1000_SUCCESS; 1557 u16 data; 1558 1559 DEBUGFUNC("e1000_setup_serdes_link_82575"); 1560 1561 if ((hw->phy.media_type != e1000_media_type_internal_serdes) && 1562 !e1000_sgmii_active_82575(hw)) 1563 return ret_val; 1564 1565 /* 1566 * On the 82575, SerDes loopback mode persists until it is 1567 * explicitly turned off or a power cycle is performed. A read to 1568 * the register does not indicate its status. Therefore, we ensure 1569 * loopback mode is disabled during initialization. 1570 */ 1571 E1000_WRITE_REG(hw, E1000_SCTL, E1000_SCTL_DISABLE_SERDES_LOOPBACK); 1572 1573 /* power on the sfp cage if present */ 1574 ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT); 1575 ctrl_ext &= ~E1000_CTRL_EXT_SDP3_DATA; 1576 E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext); 1577 1578 ctrl_reg = E1000_READ_REG(hw, E1000_CTRL); 1579 ctrl_reg |= E1000_CTRL_SLU; 1580 1581 /* set both sw defined pins on 82575/82576*/ 1582 if (hw->mac.type == e1000_82575 || hw->mac.type == e1000_82576) 1583 ctrl_reg |= E1000_CTRL_SWDPIN0 | E1000_CTRL_SWDPIN1; 1584 1585 reg = E1000_READ_REG(hw, E1000_PCS_LCTL); 1586 1587 /* default pcs_autoneg to the same setting as mac autoneg */ 1588 pcs_autoneg = hw->mac.autoneg; 1589 1590 switch (ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK) { 1591 case E1000_CTRL_EXT_LINK_MODE_SGMII: 1592 /* sgmii mode lets the phy handle forcing speed/duplex */ 1593 pcs_autoneg = TRUE; 1594 /* autoneg time out should be disabled for SGMII mode */ 1595 reg &= ~(E1000_PCS_LCTL_AN_TIMEOUT); 1596 break; 1597 case E1000_CTRL_EXT_LINK_MODE_1000BASE_KX: 1598 /* disable PCS autoneg and support parallel detect only */ 1599 pcs_autoneg = FALSE; 1600 /* FALLTHROUGH */ 1601 default: 1602 if (hw->mac.type == e1000_82575 || 1603 hw->mac.type == e1000_82576) { 1604 ret_val = hw->nvm.ops.read(hw, NVM_COMPAT, 1, &data); 1605 if (ret_val) { 1606 DEBUGOUT("NVM Read Error\n"); 1607 return ret_val; 1608 } 1609 1610 if (data & E1000_EEPROM_PCS_AUTONEG_DISABLE_BIT) 1611 pcs_autoneg = FALSE; 1612 } 1613 1614 /* 1615 * non-SGMII modes only supports a speed of 1000/Full for the 1616 * link so it is best to just force the MAC and let the pcs 1617 * link either autoneg or be forced to 1000/Full 1618 */ 1619 ctrl_reg |= E1000_CTRL_SPD_1000 | E1000_CTRL_FRCSPD | 1620 E1000_CTRL_FD | E1000_CTRL_FRCDPX; 1621 1622 /* set speed of 1000/Full if speed/duplex is forced */ 1623 reg |= E1000_PCS_LCTL_FSV_1000 | E1000_PCS_LCTL_FDV_FULL; 1624 break; 1625 } 1626 1627 E1000_WRITE_REG(hw, E1000_CTRL, ctrl_reg); 1628 1629 /* 1630 * New SerDes mode allows for forcing speed or autonegotiating speed 1631 * at 1gb. Autoneg should be default set by most drivers. This is the 1632 * mode that will be compatible with older link partners and switches. 1633 * However, both are supported by the hardware and some drivers/tools. 1634 */ 1635 reg &= ~(E1000_PCS_LCTL_AN_ENABLE | E1000_PCS_LCTL_FLV_LINK_UP | 1636 E1000_PCS_LCTL_FSD | E1000_PCS_LCTL_FORCE_LINK); 1637 1638 if (pcs_autoneg) { 1639 /* Set PCS register for autoneg */ 1640 reg |= E1000_PCS_LCTL_AN_ENABLE | /* Enable Autoneg */ 1641 E1000_PCS_LCTL_AN_RESTART; /* Restart autoneg */ 1642 1643 /* Disable force flow control for autoneg */ 1644 reg &= ~E1000_PCS_LCTL_FORCE_FCTRL; 1645 1646 /* Configure flow control advertisement for autoneg */ 1647 anadv_reg = E1000_READ_REG(hw, E1000_PCS_ANADV); 1648 anadv_reg &= ~(E1000_TXCW_ASM_DIR | E1000_TXCW_PAUSE); 1649 1650 switch (hw->fc.requested_mode) { 1651 case e1000_fc_full: 1652 case e1000_fc_rx_pause: 1653 anadv_reg |= E1000_TXCW_ASM_DIR; 1654 anadv_reg |= E1000_TXCW_PAUSE; 1655 break; 1656 case e1000_fc_tx_pause: 1657 anadv_reg |= E1000_TXCW_ASM_DIR; 1658 break; 1659 default: 1660 break; 1661 } 1662 1663 E1000_WRITE_REG(hw, E1000_PCS_ANADV, anadv_reg); 1664 1665 DEBUGOUT1("Configuring Autoneg:PCS_LCTL=0x%08X\n", reg); 1666 } else { 1667 /* Set PCS register for forced link */ 1668 reg |= E1000_PCS_LCTL_FSD; /* Force Speed */ 1669 1670 /* Force flow control for forced link */ 1671 reg |= E1000_PCS_LCTL_FORCE_FCTRL; 1672 1673 DEBUGOUT1("Configuring Forced Link:PCS_LCTL=0x%08X\n", reg); 1674 } 1675 1676 E1000_WRITE_REG(hw, E1000_PCS_LCTL, reg); 1677 1678 if (!pcs_autoneg && !e1000_sgmii_active_82575(hw)) 1679 e1000_force_mac_fc_generic(hw); 1680 1681 return ret_val; 1682} 1683 1684/** 1685 * e1000_get_media_type_82575 - derives current media type. 1686 * @hw: pointer to the HW structure 1687 * 1688 * The media type is chosen reflecting few settings. 1689 * The following are taken into account: 1690 * - link mode set in the current port Init Control Word #3 1691 * - current link mode settings in CSR register 1692 * - MDIO vs. I2C PHY control interface chosen 1693 * - SFP module media type 1694 **/ 1695static s32 e1000_get_media_type_82575(struct e1000_hw *hw) 1696{ 1697 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575; 1698 s32 ret_val = E1000_SUCCESS; 1699 u32 ctrl_ext = 0; 1700 u32 link_mode = 0; 1701 1702 /* Set internal phy as default */ 1703 dev_spec->sgmii_active = FALSE; 1704 dev_spec->module_plugged = FALSE; 1705 1706 /* Get CSR setting */ 1707 ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT); 1708 1709 /* extract link mode setting */ 1710 link_mode = ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK; 1711 1712 switch (link_mode) { 1713 case E1000_CTRL_EXT_LINK_MODE_1000BASE_KX: 1714 hw->phy.media_type = e1000_media_type_internal_serdes; 1715 break; 1716 case E1000_CTRL_EXT_LINK_MODE_GMII: 1717 hw->phy.media_type = e1000_media_type_copper; 1718 break; 1719 case E1000_CTRL_EXT_LINK_MODE_SGMII: 1720 /* Get phy control interface type set (MDIO vs. I2C)*/ 1721 if (e1000_sgmii_uses_mdio_82575(hw)) { 1722 hw->phy.media_type = e1000_media_type_copper; 1723 dev_spec->sgmii_active = TRUE; 1724 break; 1725 } 1726 /* fall through for I2C based SGMII */ 1727 /* FALLTHROUGH */ 1728 case E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES: 1729 /* read media type from SFP EEPROM */ 1730 ret_val = e1000_set_sfp_media_type_82575(hw); 1731 if ((ret_val != E1000_SUCCESS) || 1732 (hw->phy.media_type == e1000_media_type_unknown)) { 1733 /* 1734 * If media type was not identified then return media 1735 * type defined by the CTRL_EXT settings. 1736 */ 1737 hw->phy.media_type = e1000_media_type_internal_serdes; 1738 1739 if (link_mode == E1000_CTRL_EXT_LINK_MODE_SGMII) { 1740 hw->phy.media_type = e1000_media_type_copper; 1741 dev_spec->sgmii_active = TRUE; 1742 } 1743 1744 break; 1745 } 1746 1747 /* do not change link mode for 100BaseFX */ 1748 if (dev_spec->eth_flags.e100_base_fx) 1749 break; 1750 1751 /* change current link mode setting */ 1752 ctrl_ext &= ~E1000_CTRL_EXT_LINK_MODE_MASK; 1753 1754 if (hw->phy.media_type == e1000_media_type_copper) 1755 ctrl_ext |= E1000_CTRL_EXT_LINK_MODE_SGMII; 1756 else 1757 ctrl_ext |= E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES; 1758 1759 E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext); 1760 1761 break; 1762 } 1763 1764 return ret_val; 1765} 1766 1767/** 1768 * e1000_set_sfp_media_type_82575 - derives SFP module media type. 1769 * @hw: pointer to the HW structure 1770 * 1771 * The media type is chosen based on SFP module. 1772 * compatibility flags retrieved from SFP ID EEPROM. 1773 **/ 1774static s32 e1000_set_sfp_media_type_82575(struct e1000_hw *hw) 1775{ 1776 s32 ret_val = E1000_ERR_CONFIG; 1777 u32 ctrl_ext = 0; 1778 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575; 1779 struct sfp_e1000_flags *eth_flags = &dev_spec->eth_flags; 1780 u8 tranceiver_type = 0; 1781 s32 timeout = 3; 1782 1783 /* Turn I2C interface ON and power on sfp cage */ 1784 ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT); 1785 ctrl_ext &= ~E1000_CTRL_EXT_SDP3_DATA; 1786 E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext | E1000_CTRL_I2C_ENA); 1787 1788 E1000_WRITE_FLUSH(hw); 1789 1790 /* Read SFP module data */ 1791 while (timeout) { 1792 ret_val = e1000_read_sfp_data_byte(hw, 1793 E1000_I2CCMD_SFP_DATA_ADDR(E1000_SFF_IDENTIFIER_OFFSET), 1794 &tranceiver_type); 1795 if (ret_val == E1000_SUCCESS) 1796 break; 1797 msec_delay(100); 1798 timeout--; 1799 } 1800 if (ret_val != E1000_SUCCESS) 1801 goto out; 1802 1803 ret_val = e1000_read_sfp_data_byte(hw, 1804 E1000_I2CCMD_SFP_DATA_ADDR(E1000_SFF_ETH_FLAGS_OFFSET), 1805 (u8 *)eth_flags); 1806 if (ret_val != E1000_SUCCESS) 1807 goto out; 1808 1809 /* Check if there is some SFP module plugged and powered */ 1810 if ((tranceiver_type == E1000_SFF_IDENTIFIER_SFP) || 1811 (tranceiver_type == E1000_SFF_IDENTIFIER_SFF)) { 1812 dev_spec->module_plugged = TRUE; 1813 if (eth_flags->e1000_base_lx || eth_flags->e1000_base_sx) { 1814 hw->phy.media_type = e1000_media_type_internal_serdes; 1815 } else if (eth_flags->e100_base_fx) { 1816 dev_spec->sgmii_active = TRUE; 1817 hw->phy.media_type = e1000_media_type_internal_serdes; 1818 } else if (eth_flags->e1000_base_t) { 1819 dev_spec->sgmii_active = TRUE; 1820 hw->phy.media_type = e1000_media_type_copper; 1821 } else { 1822 hw->phy.media_type = e1000_media_type_unknown; 1823 DEBUGOUT("PHY module has not been recognized\n"); 1824 goto out; 1825 } 1826 } else { 1827 hw->phy.media_type = e1000_media_type_unknown; 1828 } 1829 ret_val = E1000_SUCCESS; 1830out: 1831 /* Restore I2C interface setting */ 1832 E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext); 1833 return ret_val; 1834} 1835 1836/** 1837 * e1000_valid_led_default_82575 - Verify a valid default LED config 1838 * @hw: pointer to the HW structure 1839 * @data: pointer to the NVM (EEPROM) 1840 * 1841 * Read the EEPROM for the current default LED configuration. If the 1842 * LED configuration is not valid, set to a valid LED configuration. 1843 **/ 1844static s32 e1000_valid_led_default_82575(struct e1000_hw *hw, u16 *data) 1845{ 1846 s32 ret_val; 1847 1848 DEBUGFUNC("e1000_valid_led_default_82575"); 1849 1850 ret_val = hw->nvm.ops.read(hw, NVM_ID_LED_SETTINGS, 1, data); 1851 if (ret_val) { 1852 DEBUGOUT("NVM Read Error\n"); 1853 goto out; 1854 } 1855 1856 if (*data == ID_LED_RESERVED_0000 || *data == ID_LED_RESERVED_FFFF) { 1857 switch (hw->phy.media_type) { 1858 case e1000_media_type_internal_serdes: 1859 *data = ID_LED_DEFAULT_82575_SERDES; 1860 break; 1861 case e1000_media_type_copper: 1862 default: 1863 *data = ID_LED_DEFAULT; 1864 break; 1865 } 1866 } 1867out: 1868 return ret_val; 1869} 1870 1871/** 1872 * e1000_sgmii_active_82575 - Return sgmii state 1873 * @hw: pointer to the HW structure 1874 * 1875 * 82575 silicon has a serialized gigabit media independent interface (sgmii) 1876 * which can be enabled for use in the embedded applications. Simply 1877 * return the current state of the sgmii interface. 1878 **/ 1879static bool e1000_sgmii_active_82575(struct e1000_hw *hw) 1880{ 1881 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575; 1882 return dev_spec->sgmii_active; 1883} 1884 1885/** 1886 * e1000_reset_init_script_82575 - Inits HW defaults after reset 1887 * @hw: pointer to the HW structure 1888 * 1889 * Inits recommended HW defaults after a reset when there is no EEPROM 1890 * detected. This is only for the 82575. 1891 **/ 1892static s32 e1000_reset_init_script_82575(struct e1000_hw *hw) 1893{ 1894 DEBUGFUNC("e1000_reset_init_script_82575"); 1895 1896 if (hw->mac.type == e1000_82575) { 1897 DEBUGOUT("Running reset init script for 82575\n"); 1898 /* SerDes configuration via SERDESCTRL */ 1899 e1000_write_8bit_ctrl_reg_generic(hw, E1000_SCTL, 0x00, 0x0C); 1900 e1000_write_8bit_ctrl_reg_generic(hw, E1000_SCTL, 0x01, 0x78); 1901 e1000_write_8bit_ctrl_reg_generic(hw, E1000_SCTL, 0x1B, 0x23); 1902 e1000_write_8bit_ctrl_reg_generic(hw, E1000_SCTL, 0x23, 0x15); 1903 1904 /* CCM configuration via CCMCTL register */ 1905 e1000_write_8bit_ctrl_reg_generic(hw, E1000_CCMCTL, 0x14, 0x00); 1906 e1000_write_8bit_ctrl_reg_generic(hw, E1000_CCMCTL, 0x10, 0x00); 1907 1908 /* PCIe lanes configuration */ 1909 e1000_write_8bit_ctrl_reg_generic(hw, E1000_GIOCTL, 0x00, 0xEC); 1910 e1000_write_8bit_ctrl_reg_generic(hw, E1000_GIOCTL, 0x61, 0xDF); 1911 e1000_write_8bit_ctrl_reg_generic(hw, E1000_GIOCTL, 0x34, 0x05); 1912 e1000_write_8bit_ctrl_reg_generic(hw, E1000_GIOCTL, 0x2F, 0x81); 1913 1914 /* PCIe PLL Configuration */ 1915 e1000_write_8bit_ctrl_reg_generic(hw, E1000_SCCTL, 0x02, 0x47); 1916 e1000_write_8bit_ctrl_reg_generic(hw, E1000_SCCTL, 0x14, 0x00); 1917 e1000_write_8bit_ctrl_reg_generic(hw, E1000_SCCTL, 0x10, 0x00); 1918 } 1919 1920 return E1000_SUCCESS; 1921} 1922 1923/** 1924 * e1000_read_mac_addr_82575 - Read device MAC address 1925 * @hw: pointer to the HW structure 1926 **/ 1927static s32 e1000_read_mac_addr_82575(struct e1000_hw *hw) 1928{ 1929 s32 ret_val; 1930 1931 DEBUGFUNC("e1000_read_mac_addr_82575"); 1932 1933 /* 1934 * If there's an alternate MAC address place it in RAR0 1935 * so that it will override the Si installed default perm 1936 * address. 1937 */ 1938 ret_val = e1000_check_alt_mac_addr_generic(hw); 1939 if (ret_val) 1940 goto out; 1941 1942 ret_val = e1000_read_mac_addr_generic(hw); 1943 1944out: 1945 return ret_val; 1946} 1947 1948/** 1949 * e1000_config_collision_dist_82575 - Configure collision distance 1950 * @hw: pointer to the HW structure 1951 * 1952 * Configures the collision distance to the default value and is used 1953 * during link setup. 1954 **/ 1955static void e1000_config_collision_dist_82575(struct e1000_hw *hw) 1956{ 1957 u32 tctl_ext; 1958 1959 DEBUGFUNC("e1000_config_collision_dist_82575"); 1960 1961 tctl_ext = E1000_READ_REG(hw, E1000_TCTL_EXT); 1962 1963 tctl_ext &= ~E1000_TCTL_EXT_COLD; 1964 tctl_ext |= E1000_COLLISION_DISTANCE << E1000_TCTL_EXT_COLD_SHIFT; 1965 1966 E1000_WRITE_REG(hw, E1000_TCTL_EXT, tctl_ext); 1967 E1000_WRITE_FLUSH(hw); 1968} 1969 1970/** 1971 * e1000_power_down_phy_copper_82575 - Remove link during PHY power down 1972 * @hw: pointer to the HW structure 1973 * 1974 * In the case of a PHY power down to save power, or to turn off link during a 1975 * driver unload, or wake on lan is not enabled, remove the link. 1976 **/ 1977static void e1000_power_down_phy_copper_82575(struct e1000_hw *hw) 1978{ 1979 struct e1000_phy_info *phy = &hw->phy; 1980 1981 if (!(phy->ops.check_reset_block)) 1982 return; 1983 1984 /* If the management interface is not enabled, then power down */ 1985 if (!(e1000_enable_mng_pass_thru(hw) || phy->ops.check_reset_block(hw))) 1986 e1000_power_down_phy_copper(hw); 1987 1988 return; 1989} 1990 1991/** 1992 * e1000_clear_hw_cntrs_82575 - Clear device specific hardware counters 1993 * @hw: pointer to the HW structure 1994 * 1995 * Clears the hardware counters by reading the counter registers. 1996 **/ 1997static void e1000_clear_hw_cntrs_82575(struct e1000_hw *hw) 1998{ 1999 DEBUGFUNC("e1000_clear_hw_cntrs_82575"); 2000 2001 e1000_clear_hw_cntrs_base_generic(hw); 2002 2003 E1000_READ_REG(hw, E1000_PRC64); 2004 E1000_READ_REG(hw, E1000_PRC127); 2005 E1000_READ_REG(hw, E1000_PRC255); 2006 E1000_READ_REG(hw, E1000_PRC511); 2007 E1000_READ_REG(hw, E1000_PRC1023); 2008 E1000_READ_REG(hw, E1000_PRC1522); 2009 E1000_READ_REG(hw, E1000_PTC64); 2010 E1000_READ_REG(hw, E1000_PTC127); 2011 E1000_READ_REG(hw, E1000_PTC255); 2012 E1000_READ_REG(hw, E1000_PTC511); 2013 E1000_READ_REG(hw, E1000_PTC1023); 2014 E1000_READ_REG(hw, E1000_PTC1522); 2015 2016 E1000_READ_REG(hw, E1000_ALGNERRC); 2017 E1000_READ_REG(hw, E1000_RXERRC); 2018 E1000_READ_REG(hw, E1000_TNCRS); 2019 E1000_READ_REG(hw, E1000_CEXTERR); 2020 E1000_READ_REG(hw, E1000_TSCTC); 2021 E1000_READ_REG(hw, E1000_TSCTFC); 2022 2023 E1000_READ_REG(hw, E1000_MGTPRC); 2024 E1000_READ_REG(hw, E1000_MGTPDC); 2025 E1000_READ_REG(hw, E1000_MGTPTC); 2026 2027 E1000_READ_REG(hw, E1000_IAC); 2028 E1000_READ_REG(hw, E1000_ICRXOC); 2029 2030 E1000_READ_REG(hw, E1000_ICRXPTC); 2031 E1000_READ_REG(hw, E1000_ICRXATC); 2032 E1000_READ_REG(hw, E1000_ICTXPTC); 2033 E1000_READ_REG(hw, E1000_ICTXATC); 2034 E1000_READ_REG(hw, E1000_ICTXQEC); 2035 E1000_READ_REG(hw, E1000_ICTXQMTC); 2036 E1000_READ_REG(hw, E1000_ICRXDMTC); 2037 2038 E1000_READ_REG(hw, E1000_CBTMPC); 2039 E1000_READ_REG(hw, E1000_HTDPMC); 2040 E1000_READ_REG(hw, E1000_CBRMPC); 2041 E1000_READ_REG(hw, E1000_RPTHC); 2042 E1000_READ_REG(hw, E1000_HGPTC); 2043 E1000_READ_REG(hw, E1000_HTCBDPC); 2044 E1000_READ_REG(hw, E1000_HGORCL); 2045 E1000_READ_REG(hw, E1000_HGORCH); 2046 E1000_READ_REG(hw, E1000_HGOTCL); 2047 E1000_READ_REG(hw, E1000_HGOTCH); 2048 E1000_READ_REG(hw, E1000_LENERRS); 2049 2050 /* This register should not be read in copper configurations */ 2051 if ((hw->phy.media_type == e1000_media_type_internal_serdes) || 2052 e1000_sgmii_active_82575(hw)) 2053 E1000_READ_REG(hw, E1000_SCVPC); 2054} 2055 2056/** 2057 * e1000_rx_fifo_flush_82575 - Clean rx fifo after Rx enable 2058 * @hw: pointer to the HW structure 2059 * 2060 * After Rx enable, if manageability is enabled then there is likely some 2061 * bad data at the start of the fifo and possibly in the DMA fifo. This 2062 * function clears the fifos and flushes any packets that came in as rx was 2063 * being enabled. 2064 **/ 2065void e1000_rx_fifo_flush_82575(struct e1000_hw *hw) 2066{ 2067 u32 rctl, rlpml, rxdctl[4], rfctl, temp_rctl, rx_enabled; 2068 int i, ms_wait; 2069 2070 DEBUGFUNC("e1000_rx_fifo_flush_82575"); 2071 2072 /* disable IPv6 options as per hardware errata */ 2073 rfctl = E1000_READ_REG(hw, E1000_RFCTL); 2074 rfctl |= E1000_RFCTL_IPV6_EX_DIS; 2075 E1000_WRITE_REG(hw, E1000_RFCTL, rfctl); 2076 2077 if (hw->mac.type != e1000_82575 || 2078 !(E1000_READ_REG(hw, E1000_MANC) & E1000_MANC_RCV_TCO_EN)) 2079 return; 2080 2081 /* Disable all Rx queues */ 2082 for (i = 0; i < 4; i++) { 2083 rxdctl[i] = E1000_READ_REG(hw, E1000_RXDCTL(i)); 2084 E1000_WRITE_REG(hw, E1000_RXDCTL(i), 2085 rxdctl[i] & ~E1000_RXDCTL_QUEUE_ENABLE); 2086 } 2087 /* Poll all queues to verify they have shut down */ 2088 for (ms_wait = 0; ms_wait < 10; ms_wait++) { 2089 msec_delay(1); 2090 rx_enabled = 0; 2091 for (i = 0; i < 4; i++) 2092 rx_enabled |= E1000_READ_REG(hw, E1000_RXDCTL(i)); 2093 if (!(rx_enabled & E1000_RXDCTL_QUEUE_ENABLE)) 2094 break; 2095 } 2096 2097 if (ms_wait == 10) 2098 DEBUGOUT("Queue disable timed out after 10ms\n"); 2099 2100 /* Clear RLPML, RCTL.SBP, RFCTL.LEF, and set RCTL.LPE so that all 2101 * incoming packets are rejected. Set enable and wait 2ms so that 2102 * any packet that was coming in as RCTL.EN was set is flushed 2103 */ 2104 E1000_WRITE_REG(hw, E1000_RFCTL, rfctl & ~E1000_RFCTL_LEF); 2105 2106 rlpml = E1000_READ_REG(hw, E1000_RLPML); 2107 E1000_WRITE_REG(hw, E1000_RLPML, 0); 2108 2109 rctl = E1000_READ_REG(hw, E1000_RCTL); 2110 temp_rctl = rctl & ~(E1000_RCTL_EN | E1000_RCTL_SBP); 2111 temp_rctl |= E1000_RCTL_LPE; 2112 2113 E1000_WRITE_REG(hw, E1000_RCTL, temp_rctl); 2114 E1000_WRITE_REG(hw, E1000_RCTL, temp_rctl | E1000_RCTL_EN); 2115 E1000_WRITE_FLUSH(hw); 2116 msec_delay(2); 2117 2118 /* Enable Rx queues that were previously enabled and restore our 2119 * previous state 2120 */ 2121 for (i = 0; i < 4; i++) 2122 E1000_WRITE_REG(hw, E1000_RXDCTL(i), rxdctl[i]); 2123 E1000_WRITE_REG(hw, E1000_RCTL, rctl); 2124 E1000_WRITE_FLUSH(hw); 2125 2126 E1000_WRITE_REG(hw, E1000_RLPML, rlpml); 2127 E1000_WRITE_REG(hw, E1000_RFCTL, rfctl); 2128 2129 /* Flush receive errors generated by workaround */ 2130 E1000_READ_REG(hw, E1000_ROC); 2131 E1000_READ_REG(hw, E1000_RNBC); 2132 E1000_READ_REG(hw, E1000_MPC); 2133} 2134 2135/** 2136 * e1000_set_pcie_completion_timeout - set pci-e completion timeout 2137 * @hw: pointer to the HW structure 2138 * 2139 * The defaults for 82575 and 82576 should be in the range of 50us to 50ms, 2140 * however the hardware default for these parts is 500us to 1ms which is less 2141 * than the 10ms recommended by the pci-e spec. To address this we need to 2142 * increase the value to either 10ms to 200ms for capability version 1 config, 2143 * or 16ms to 55ms for version 2. 2144 **/ 2145static s32 e1000_set_pcie_completion_timeout(struct e1000_hw *hw) 2146{ 2147 u32 gcr = E1000_READ_REG(hw, E1000_GCR); 2148 s32 ret_val = E1000_SUCCESS; 2149 u16 pcie_devctl2; 2150 2151 /* only take action if timeout value is defaulted to 0 */ 2152 if (gcr & E1000_GCR_CMPL_TMOUT_MASK) 2153 goto out; 2154 2155 /* 2156 * if capababilities version is type 1 we can write the 2157 * timeout of 10ms to 200ms through the GCR register 2158 */ 2159 if (!(gcr & E1000_GCR_CAP_VER2)) { 2160 gcr |= E1000_GCR_CMPL_TMOUT_10ms; 2161 goto out; 2162 } 2163 2164 /* 2165 * for version 2 capabilities we need to write the config space 2166 * directly in order to set the completion timeout value for 2167 * 16ms to 55ms 2168 */ 2169 ret_val = e1000_read_pcie_cap_reg(hw, PCIE_DEVICE_CONTROL2, 2170 &pcie_devctl2); 2171 if (ret_val) 2172 goto out; 2173 2174 pcie_devctl2 |= PCIE_DEVICE_CONTROL2_16ms; 2175 2176 ret_val = e1000_write_pcie_cap_reg(hw, PCIE_DEVICE_CONTROL2, 2177 &pcie_devctl2); 2178out: 2179 /* disable completion timeout resend */ 2180 gcr &= ~E1000_GCR_CMPL_TMOUT_RESEND; 2181 2182 E1000_WRITE_REG(hw, E1000_GCR, gcr); 2183 return ret_val; 2184} 2185 2186/** 2187 * e1000_vmdq_set_anti_spoofing_pf - enable or disable anti-spoofing 2188 * @hw: pointer to the hardware struct 2189 * @enable: state to enter, either enabled or disabled 2190 * @pf: Physical Function pool - do not set anti-spoofing for the PF 2191 * 2192 * enables/disables L2 switch anti-spoofing functionality. 2193 **/ 2194void e1000_vmdq_set_anti_spoofing_pf(struct e1000_hw *hw, bool enable, int pf) 2195{ 2196 u32 reg_val, reg_offset; 2197 2198 switch (hw->mac.type) { 2199 case e1000_82576: 2200 reg_offset = E1000_DTXSWC; 2201 break; 2202 case e1000_i350: 2203 case e1000_i354: 2204 reg_offset = E1000_TXSWC; 2205 break; 2206 default: 2207 return; 2208 } 2209 2210 reg_val = E1000_READ_REG(hw, reg_offset); 2211 if (enable) { 2212 reg_val |= (E1000_DTXSWC_MAC_SPOOF_MASK | 2213 E1000_DTXSWC_VLAN_SPOOF_MASK); 2214 /* The PF can spoof - it has to in order to 2215 * support emulation mode NICs 2216 */ 2217 reg_val ^= (1 << pf | 1 << (pf + MAX_NUM_VFS)); 2218 } else { 2219 reg_val &= ~(E1000_DTXSWC_MAC_SPOOF_MASK | 2220 E1000_DTXSWC_VLAN_SPOOF_MASK); 2221 } 2222 E1000_WRITE_REG(hw, reg_offset, reg_val); 2223} 2224 2225/** 2226 * e1000_vmdq_set_loopback_pf - enable or disable vmdq loopback 2227 * @hw: pointer to the hardware struct 2228 * @enable: state to enter, either enabled or disabled 2229 * 2230 * enables/disables L2 switch loopback functionality. 2231 **/ 2232void e1000_vmdq_set_loopback_pf(struct e1000_hw *hw, bool enable) 2233{ 2234 u32 dtxswc; 2235 2236 switch (hw->mac.type) { 2237 case e1000_82576: 2238 dtxswc = E1000_READ_REG(hw, E1000_DTXSWC); 2239 if (enable) 2240 dtxswc |= E1000_DTXSWC_VMDQ_LOOPBACK_EN; 2241 else 2242 dtxswc &= ~E1000_DTXSWC_VMDQ_LOOPBACK_EN; 2243 E1000_WRITE_REG(hw, E1000_DTXSWC, dtxswc); 2244 break; 2245 case e1000_i350: 2246 case e1000_i354: 2247 dtxswc = E1000_READ_REG(hw, E1000_TXSWC); 2248 if (enable) 2249 dtxswc |= E1000_DTXSWC_VMDQ_LOOPBACK_EN; 2250 else 2251 dtxswc &= ~E1000_DTXSWC_VMDQ_LOOPBACK_EN; 2252 E1000_WRITE_REG(hw, E1000_TXSWC, dtxswc); 2253 break; 2254 default: 2255 /* Currently no other hardware supports loopback */ 2256 break; 2257 } 2258 2259 2260} 2261 2262/** 2263 * e1000_vmdq_set_replication_pf - enable or disable vmdq replication 2264 * @hw: pointer to the hardware struct 2265 * @enable: state to enter, either enabled or disabled 2266 * 2267 * enables/disables replication of packets across multiple pools. 2268 **/ 2269void e1000_vmdq_set_replication_pf(struct e1000_hw *hw, bool enable) 2270{ 2271 u32 vt_ctl = E1000_READ_REG(hw, E1000_VT_CTL); 2272 2273 if (enable) 2274 vt_ctl |= E1000_VT_CTL_VM_REPL_EN; 2275 else 2276 vt_ctl &= ~E1000_VT_CTL_VM_REPL_EN; 2277 2278 E1000_WRITE_REG(hw, E1000_VT_CTL, vt_ctl); 2279} 2280 2281/** 2282 * e1000_read_phy_reg_82580 - Read 82580 MDI control register 2283 * @hw: pointer to the HW structure 2284 * @offset: register offset to be read 2285 * @data: pointer to the read data 2286 * 2287 * Reads the MDI control register in the PHY at offset and stores the 2288 * information read to data. 2289 **/ 2290static s32 e1000_read_phy_reg_82580(struct e1000_hw *hw, u32 offset, u16 *data) 2291{ 2292 s32 ret_val; 2293 2294 DEBUGFUNC("e1000_read_phy_reg_82580"); 2295 2296 ret_val = hw->phy.ops.acquire(hw); 2297 if (ret_val) 2298 goto out; 2299 2300 ret_val = e1000_read_phy_reg_mdic(hw, offset, data); 2301 2302 hw->phy.ops.release(hw); 2303 2304out: 2305 return ret_val; 2306} 2307 2308/** 2309 * e1000_write_phy_reg_82580 - Write 82580 MDI control register 2310 * @hw: pointer to the HW structure 2311 * @offset: register offset to write to 2312 * @data: data to write to register at offset 2313 * 2314 * Writes data to MDI control register in the PHY at offset. 2315 **/ 2316static s32 e1000_write_phy_reg_82580(struct e1000_hw *hw, u32 offset, u16 data) 2317{ 2318 s32 ret_val; 2319 2320 DEBUGFUNC("e1000_write_phy_reg_82580"); 2321 2322 ret_val = hw->phy.ops.acquire(hw); 2323 if (ret_val) 2324 goto out; 2325 2326 ret_val = e1000_write_phy_reg_mdic(hw, offset, data); 2327 2328 hw->phy.ops.release(hw); 2329 2330out: 2331 return ret_val; 2332} 2333 2334/** 2335 * e1000_reset_mdicnfg_82580 - Reset MDICNFG destination and com_mdio bits 2336 * @hw: pointer to the HW structure 2337 * 2338 * This resets the MDICNFG.Destination and MDICNFG.Com_MDIO bits based on 2339 * the values found in the EEPROM. This addresses an issue in which these 2340 * bits are not restored from EEPROM after reset. 2341 **/ 2342static s32 e1000_reset_mdicnfg_82580(struct e1000_hw *hw) 2343{ 2344 s32 ret_val = E1000_SUCCESS; 2345 u32 mdicnfg; 2346 u16 nvm_data = 0; 2347 2348 DEBUGFUNC("e1000_reset_mdicnfg_82580"); 2349 2350 if (hw->mac.type != e1000_82580) 2351 goto out; 2352 if (!e1000_sgmii_active_82575(hw)) 2353 goto out; 2354 2355 ret_val = hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A + 2356 NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1, 2357 &nvm_data); 2358 if (ret_val) { 2359 DEBUGOUT("NVM Read Error\n"); 2360 goto out; 2361 } 2362 2363 mdicnfg = E1000_READ_REG(hw, E1000_MDICNFG); 2364 if (nvm_data & NVM_WORD24_EXT_MDIO) 2365 mdicnfg |= E1000_MDICNFG_EXT_MDIO; 2366 if (nvm_data & NVM_WORD24_COM_MDIO) 2367 mdicnfg |= E1000_MDICNFG_COM_MDIO; 2368 E1000_WRITE_REG(hw, E1000_MDICNFG, mdicnfg); 2369out: 2370 return ret_val; 2371} 2372 2373/** 2374 * e1000_reset_hw_82580 - Reset hardware 2375 * @hw: pointer to the HW structure 2376 * 2377 * This resets function or entire device (all ports, etc.) 2378 * to a known state. 2379 **/ 2380static s32 e1000_reset_hw_82580(struct e1000_hw *hw) 2381{ 2382 s32 ret_val = E1000_SUCCESS; 2383 /* BH SW mailbox bit in SW_FW_SYNC */ 2384 u16 swmbsw_mask = E1000_SW_SYNCH_MB; 2385 u32 ctrl; 2386 bool global_device_reset = hw->dev_spec._82575.global_device_reset; 2387 2388 DEBUGFUNC("e1000_reset_hw_82580"); 2389 2390 hw->dev_spec._82575.global_device_reset = FALSE; 2391 2392 /* 82580 does not reliably do global_device_reset due to hw errata */ 2393 if (hw->mac.type == e1000_82580) 2394 global_device_reset = FALSE; 2395 2396 /* Get current control state. */ 2397 ctrl = E1000_READ_REG(hw, E1000_CTRL); 2398 2399 /* 2400 * Prevent the PCI-E bus from sticking if there is no TLP connection 2401 * on the last TLP read/write transaction when MAC is reset. 2402 */ 2403 ret_val = e1000_disable_pcie_master_generic(hw); 2404 if (ret_val) 2405 DEBUGOUT("PCI-E Master disable polling has failed.\n"); 2406 2407 DEBUGOUT("Masking off all interrupts\n"); 2408 E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff); 2409 E1000_WRITE_REG(hw, E1000_RCTL, 0); 2410 E1000_WRITE_REG(hw, E1000_TCTL, E1000_TCTL_PSP); 2411 E1000_WRITE_FLUSH(hw); 2412 2413 msec_delay(10); 2414 2415 /* Determine whether or not a global dev reset is requested */ 2416 if (global_device_reset && hw->mac.ops.acquire_swfw_sync(hw, 2417 swmbsw_mask)) 2418 global_device_reset = FALSE; 2419 2420 if (global_device_reset && !(E1000_READ_REG(hw, E1000_STATUS) & 2421 E1000_STAT_DEV_RST_SET)) 2422 ctrl |= E1000_CTRL_DEV_RST; 2423 else 2424 ctrl |= E1000_CTRL_RST; 2425 2426 E1000_WRITE_REG(hw, E1000_CTRL, ctrl); 2427 2428 switch (hw->device_id) { 2429 case E1000_DEV_ID_DH89XXCC_SGMII: 2430 break; 2431 default: 2432 E1000_WRITE_FLUSH(hw); 2433 break; 2434 } 2435 2436 /* Add delay to insure DEV_RST or RST has time to complete */ 2437 msec_delay(5); 2438 2439 ret_val = e1000_get_auto_rd_done_generic(hw); 2440 if (ret_val) { 2441 /* 2442 * When auto config read does not complete, do not 2443 * return with an error. This can happen in situations 2444 * where there is no eeprom and prevents getting link. 2445 */ 2446 DEBUGOUT("Auto Read Done did not complete\n"); 2447 } 2448 2449 /* clear global device reset status bit */ 2450 E1000_WRITE_REG(hw, E1000_STATUS, E1000_STAT_DEV_RST_SET); 2451 2452 /* Clear any pending interrupt events. */ 2453 E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff); 2454 E1000_READ_REG(hw, E1000_ICR); 2455 2456 ret_val = e1000_reset_mdicnfg_82580(hw); 2457 if (ret_val) 2458 DEBUGOUT("Could not reset MDICNFG based on EEPROM\n"); 2459 2460 /* Install any alternate MAC address into RAR0 */ 2461 ret_val = e1000_check_alt_mac_addr_generic(hw); 2462 2463 /* Release semaphore */ 2464 if (global_device_reset) 2465 hw->mac.ops.release_swfw_sync(hw, swmbsw_mask); 2466 2467 return ret_val; 2468} 2469 2470/** 2471 * e1000_rxpbs_adjust_82580 - adjust RXPBS value to reflect actual Rx PBA size 2472 * @data: data received by reading RXPBS register 2473 * 2474 * The 82580 uses a table based approach for packet buffer allocation sizes. 2475 * This function converts the retrieved value into the correct table value 2476 * 0x0 0x1 0x2 0x3 0x4 0x5 0x6 0x7 2477 * 0x0 36 72 144 1 2 4 8 16 2478 * 0x8 35 70 140 rsv rsv rsv rsv rsv 2479 */ 2480u16 e1000_rxpbs_adjust_82580(u32 data) 2481{ 2482 u16 ret_val = 0; 2483 2484 if (data < E1000_82580_RXPBS_TABLE_SIZE) 2485 ret_val = e1000_82580_rxpbs_table[data]; 2486 2487 return ret_val; 2488} 2489 2490/** 2491 * e1000_validate_nvm_checksum_with_offset - Validate EEPROM 2492 * checksum 2493 * @hw: pointer to the HW structure 2494 * @offset: offset in words of the checksum protected region 2495 * 2496 * Calculates the EEPROM checksum by reading/adding each word of the EEPROM 2497 * and then verifies that the sum of the EEPROM is equal to 0xBABA. 2498 **/ 2499s32 e1000_validate_nvm_checksum_with_offset(struct e1000_hw *hw, u16 offset) 2500{ 2501 s32 ret_val = E1000_SUCCESS; 2502 u16 checksum = 0; 2503 u16 i, nvm_data; 2504 2505 DEBUGFUNC("e1000_validate_nvm_checksum_with_offset"); 2506 2507 for (i = offset; i < ((NVM_CHECKSUM_REG + offset) + 1); i++) { 2508 ret_val = hw->nvm.ops.read(hw, i, 1, &nvm_data); 2509 if (ret_val) { 2510 DEBUGOUT("NVM Read Error\n"); 2511 goto out; 2512 } 2513 checksum += nvm_data; 2514 } 2515 2516 if (checksum != (u16) NVM_SUM) { 2517 DEBUGOUT("NVM Checksum Invalid\n"); 2518 ret_val = -E1000_ERR_NVM; 2519 goto out; 2520 } 2521 2522out: 2523 return ret_val; 2524} 2525 2526/** 2527 * e1000_update_nvm_checksum_with_offset - Update EEPROM 2528 * checksum 2529 * @hw: pointer to the HW structure 2530 * @offset: offset in words of the checksum protected region 2531 * 2532 * Updates the EEPROM checksum by reading/adding each word of the EEPROM 2533 * up to the checksum. Then calculates the EEPROM checksum and writes the 2534 * value to the EEPROM. 2535 **/ 2536s32 e1000_update_nvm_checksum_with_offset(struct e1000_hw *hw, u16 offset) 2537{ 2538 s32 ret_val; 2539 u16 checksum = 0; 2540 u16 i, nvm_data; 2541 2542 DEBUGFUNC("e1000_update_nvm_checksum_with_offset"); 2543 2544 for (i = offset; i < (NVM_CHECKSUM_REG + offset); i++) { 2545 ret_val = hw->nvm.ops.read(hw, i, 1, &nvm_data); 2546 if (ret_val) { 2547 DEBUGOUT("NVM Read Error while updating checksum.\n"); 2548 goto out; 2549 } 2550 checksum += nvm_data; 2551 } 2552 checksum = (u16) NVM_SUM - checksum; 2553 ret_val = hw->nvm.ops.write(hw, (NVM_CHECKSUM_REG + offset), 1, 2554 &checksum); 2555 if (ret_val) 2556 DEBUGOUT("NVM Write Error while updating checksum.\n"); 2557 2558out: 2559 return ret_val; 2560} 2561 2562/** 2563 * e1000_validate_nvm_checksum_82580 - Validate EEPROM checksum 2564 * @hw: pointer to the HW structure 2565 * 2566 * Calculates the EEPROM section checksum by reading/adding each word of 2567 * the EEPROM and then verifies that the sum of the EEPROM is 2568 * equal to 0xBABA. 2569 **/ 2570static s32 e1000_validate_nvm_checksum_82580(struct e1000_hw *hw) 2571{ 2572 s32 ret_val; 2573 u16 eeprom_regions_count = 1; 2574 u16 j, nvm_data; 2575 u16 nvm_offset; 2576 2577 DEBUGFUNC("e1000_validate_nvm_checksum_82580"); 2578 2579 ret_val = hw->nvm.ops.read(hw, NVM_COMPATIBILITY_REG_3, 1, &nvm_data); 2580 if (ret_val) { 2581 DEBUGOUT("NVM Read Error\n"); 2582 goto out; 2583 } 2584 2585 if (nvm_data & NVM_COMPATIBILITY_BIT_MASK) { 2586 /* if chekcsums compatibility bit is set validate checksums 2587 * for all 4 ports. */ 2588 eeprom_regions_count = 4; 2589 } 2590 2591 for (j = 0; j < eeprom_regions_count; j++) { 2592 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j); 2593 ret_val = e1000_validate_nvm_checksum_with_offset(hw, 2594 nvm_offset); 2595 if (ret_val != E1000_SUCCESS) 2596 goto out; 2597 } 2598 2599out: 2600 return ret_val; 2601} 2602 2603/** 2604 * e1000_update_nvm_checksum_82580 - Update EEPROM checksum 2605 * @hw: pointer to the HW structure 2606 * 2607 * Updates the EEPROM section checksums for all 4 ports by reading/adding 2608 * each word of the EEPROM up to the checksum. Then calculates the EEPROM 2609 * checksum and writes the value to the EEPROM. 2610 **/ 2611static s32 e1000_update_nvm_checksum_82580(struct e1000_hw *hw) 2612{ 2613 s32 ret_val; 2614 u16 j, nvm_data; 2615 u16 nvm_offset; 2616 2617 DEBUGFUNC("e1000_update_nvm_checksum_82580"); 2618 2619 ret_val = hw->nvm.ops.read(hw, NVM_COMPATIBILITY_REG_3, 1, &nvm_data); 2620 if (ret_val) { 2621 DEBUGOUT("NVM Read Error while updating checksum compatibility bit.\n"); 2622 goto out; 2623 } 2624 2625 if (!(nvm_data & NVM_COMPATIBILITY_BIT_MASK)) { 2626 /* set compatibility bit to validate checksums appropriately */ 2627 nvm_data = nvm_data | NVM_COMPATIBILITY_BIT_MASK; 2628 ret_val = hw->nvm.ops.write(hw, NVM_COMPATIBILITY_REG_3, 1, 2629 &nvm_data); 2630 if (ret_val) { 2631 DEBUGOUT("NVM Write Error while updating checksum compatibility bit.\n"); 2632 goto out; 2633 } 2634 } 2635 2636 for (j = 0; j < 4; j++) { 2637 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j); 2638 ret_val = e1000_update_nvm_checksum_with_offset(hw, nvm_offset); 2639 if (ret_val) 2640 goto out; 2641 } 2642 2643out: 2644 return ret_val; 2645} 2646 2647/** 2648 * e1000_validate_nvm_checksum_i350 - Validate EEPROM checksum 2649 * @hw: pointer to the HW structure 2650 * 2651 * Calculates the EEPROM section checksum by reading/adding each word of 2652 * the EEPROM and then verifies that the sum of the EEPROM is 2653 * equal to 0xBABA. 2654 **/ 2655static s32 e1000_validate_nvm_checksum_i350(struct e1000_hw *hw) 2656{ 2657 s32 ret_val = E1000_SUCCESS; 2658 u16 j; 2659 u16 nvm_offset; 2660 2661 DEBUGFUNC("e1000_validate_nvm_checksum_i350"); 2662 2663 for (j = 0; j < 4; j++) { 2664 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j); 2665 ret_val = e1000_validate_nvm_checksum_with_offset(hw, 2666 nvm_offset); 2667 if (ret_val != E1000_SUCCESS) 2668 goto out; 2669 } 2670 2671out: 2672 return ret_val; 2673} 2674 2675/** 2676 * e1000_update_nvm_checksum_i350 - Update EEPROM checksum 2677 * @hw: pointer to the HW structure 2678 * 2679 * Updates the EEPROM section checksums for all 4 ports by reading/adding 2680 * each word of the EEPROM up to the checksum. Then calculates the EEPROM 2681 * checksum and writes the value to the EEPROM. 2682 **/ 2683static s32 e1000_update_nvm_checksum_i350(struct e1000_hw *hw) 2684{ 2685 s32 ret_val = E1000_SUCCESS; 2686 u16 j; 2687 u16 nvm_offset; 2688 2689 DEBUGFUNC("e1000_update_nvm_checksum_i350"); 2690 2691 for (j = 0; j < 4; j++) { 2692 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j); 2693 ret_val = e1000_update_nvm_checksum_with_offset(hw, nvm_offset); 2694 if (ret_val != E1000_SUCCESS) 2695 goto out; 2696 } 2697 2698out: 2699 return ret_val; 2700} 2701 2702/** 2703 * __e1000_access_emi_reg - Read/write EMI register 2704 * @hw: pointer to the HW structure 2705 * @addr: EMI address to program 2706 * @data: pointer to value to read/write from/to the EMI address 2707 * @read: boolean flag to indicate read or write 2708 **/ 2709static s32 __e1000_access_emi_reg(struct e1000_hw *hw, u16 address, 2710 u16 *data, bool read) 2711{ 2712 s32 ret_val; 2713 2714 DEBUGFUNC("__e1000_access_emi_reg"); 2715 2716 ret_val = hw->phy.ops.write_reg(hw, E1000_EMIADD, address); 2717 if (ret_val) 2718 return ret_val; 2719 2720 if (read) 2721 ret_val = hw->phy.ops.read_reg(hw, E1000_EMIDATA, data); 2722 else 2723 ret_val = hw->phy.ops.write_reg(hw, E1000_EMIDATA, *data); 2724 2725 return ret_val; 2726} 2727 2728/** 2729 * e1000_read_emi_reg - Read Extended Management Interface register 2730 * @hw: pointer to the HW structure 2731 * @addr: EMI address to program 2732 * @data: value to be read from the EMI address 2733 **/ 2734s32 e1000_read_emi_reg(struct e1000_hw *hw, u16 addr, u16 *data) 2735{ 2736 DEBUGFUNC("e1000_read_emi_reg"); 2737 2738 return __e1000_access_emi_reg(hw, addr, data, TRUE); 2739} 2740 2741/** 2742 * e1000_initialize_M88E1512_phy - Initialize M88E1512 PHY 2743 * @hw: pointer to the HW structure 2744 * 2745 * Initialize Marvell 1512 to work correctly with Avoton. 2746 **/ 2747s32 e1000_initialize_M88E1512_phy(struct e1000_hw *hw) 2748{ 2749 struct e1000_phy_info *phy = &hw->phy; 2750 s32 ret_val = E1000_SUCCESS; 2751 2752 DEBUGFUNC("e1000_initialize_M88E1512_phy"); 2753 2754 /* Check if this is correct PHY. */ 2755 if (phy->id != M88E1512_E_PHY_ID) 2756 goto out; 2757 2758 /* Switch to PHY page 0xFF. */ 2759 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_PAGE_ADDR, 0x00FF); 2760 if (ret_val) 2761 goto out; 2762 2763 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_CFG_REG_2, 0x214B); 2764 if (ret_val) 2765 goto out; 2766 2767 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_CFG_REG_1, 0x2144); 2768 if (ret_val) 2769 goto out; 2770 2771 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_CFG_REG_2, 0x0C28); 2772 if (ret_val) 2773 goto out; 2774 2775 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_CFG_REG_1, 0x2146); 2776 if (ret_val) 2777 goto out; 2778 2779 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_CFG_REG_2, 0xB233); 2780 if (ret_val) 2781 goto out; 2782 2783 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_CFG_REG_1, 0x214D); 2784 if (ret_val) 2785 goto out; 2786 2787 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_CFG_REG_2, 0xCC0C); 2788 if (ret_val) 2789 goto out; 2790 2791 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_CFG_REG_1, 0x2159); 2792 if (ret_val) 2793 goto out; 2794 2795 /* Switch to PHY page 0xFB. */ 2796 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_PAGE_ADDR, 0x00FB); 2797 if (ret_val) 2798 goto out; 2799 2800 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_CFG_REG_3, 0x000D); 2801 if (ret_val) 2802 goto out; 2803 2804 /* Switch to PHY page 0x12. */ 2805 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_PAGE_ADDR, 0x12); 2806 if (ret_val) 2807 goto out; 2808 2809 /* Change mode to SGMII-to-Copper */ 2810 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_MODE, 0x8001); 2811 if (ret_val) 2812 goto out; 2813 2814 /* Return the PHY to page 0. */ 2815 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_PAGE_ADDR, 0); 2816 if (ret_val) 2817 goto out; 2818 2819 ret_val = phy->ops.commit(hw); 2820 if (ret_val) { 2821 DEBUGOUT("Error committing the PHY changes\n"); 2822 return ret_val; 2823 } 2824 2825 msec_delay(1000); 2826out: 2827 return ret_val; 2828} 2829 2830/** 2831 * e1000_initialize_M88E1543_phy - Initialize M88E1543 PHY 2832 * @hw: pointer to the HW structure 2833 * 2834 * Initialize Marvell 1543 to work correctly with Avoton. 2835 **/ 2836s32 e1000_initialize_M88E1543_phy(struct e1000_hw *hw) 2837{ 2838 struct e1000_phy_info *phy = &hw->phy; 2839 s32 ret_val = E1000_SUCCESS; 2840 2841 DEBUGFUNC("e1000_initialize_M88E1543_phy"); 2842 2843 /* Check if this is correct PHY. */ 2844 if (phy->id != M88E1543_E_PHY_ID) 2845 goto out; 2846 2847 /* Switch to PHY page 0xFF. */ 2848 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_PAGE_ADDR, 0x00FF); 2849 if (ret_val) 2850 goto out; 2851 2852 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_CFG_REG_2, 0x214B); 2853 if (ret_val) 2854 goto out; 2855 2856 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_CFG_REG_1, 0x2144); 2857 if (ret_val) 2858 goto out; 2859 2860 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_CFG_REG_2, 0x0C28); 2861 if (ret_val) 2862 goto out; 2863 2864 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_CFG_REG_1, 0x2146); 2865 if (ret_val) 2866 goto out; 2867 2868 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_CFG_REG_2, 0xB233); 2869 if (ret_val) 2870 goto out; 2871 2872 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_CFG_REG_1, 0x214D); 2873 if (ret_val) 2874 goto out; 2875 2876 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_CFG_REG_2, 0xDC0C); 2877 if (ret_val) 2878 goto out; 2879 2880 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_CFG_REG_1, 0x2159); 2881 if (ret_val) 2882 goto out; 2883 2884 /* Switch to PHY page 0xFB. */ 2885 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_PAGE_ADDR, 0x00FB); 2886 if (ret_val) 2887 goto out; 2888 2889 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_CFG_REG_3, 0xC00D); 2890 if (ret_val) 2891 goto out; 2892 2893 /* Switch to PHY page 0x12. */ 2894 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_PAGE_ADDR, 0x12); 2895 if (ret_val) 2896 goto out; 2897 2898 /* Change mode to SGMII-to-Copper */ 2899 ret_val = phy->ops.write_reg(hw, E1000_M88E1512_MODE, 0x8001); 2900 if (ret_val) 2901 goto out; 2902 2903 /* Switch to PHY page 1. */ 2904 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_PAGE_ADDR, 0x1); 2905 if (ret_val) 2906 goto out; 2907 2908 /* Change mode to 1000BASE-X/SGMII and autoneg enable; reset */ 2909 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_FIBER_CTRL, 0x9140); 2910 if (ret_val) 2911 goto out; 2912 2913 /* Return the PHY to page 0. */ 2914 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_PAGE_ADDR, 0); 2915 if (ret_val) 2916 goto out; 2917 2918 ret_val = phy->ops.commit(hw); 2919 if (ret_val) { 2920 DEBUGOUT("Error committing the PHY changes\n"); 2921 return ret_val; 2922 } 2923 2924 msec_delay(1000); 2925out: 2926 return ret_val; 2927} 2928 2929/** 2930 * e1000_set_eee_i350 - Enable/disable EEE support 2931 * @hw: pointer to the HW structure 2932 * @adv1g: boolean flag enabling 1G EEE advertisement 2933 * @adv100m: boolean flag enabling 100M EEE advertisement 2934 * 2935 * Enable/disable EEE based on setting in dev_spec structure. 2936 * 2937 **/ 2938s32 e1000_set_eee_i350(struct e1000_hw *hw, bool adv1G, bool adv100M) 2939{ 2940 u32 ipcnfg, eeer; 2941 2942 DEBUGFUNC("e1000_set_eee_i350"); 2943 2944 if ((hw->mac.type < e1000_i350) || 2945 (hw->phy.media_type != e1000_media_type_copper)) 2946 goto out; 2947 ipcnfg = E1000_READ_REG(hw, E1000_IPCNFG); 2948 eeer = E1000_READ_REG(hw, E1000_EEER); 2949 2950 /* enable or disable per user setting */ 2951 if (!(hw->dev_spec._82575.eee_disable)) { 2952 u32 eee_su = E1000_READ_REG(hw, E1000_EEE_SU); 2953 2954 if (adv100M) 2955 ipcnfg |= E1000_IPCNFG_EEE_100M_AN; 2956 else 2957 ipcnfg &= ~E1000_IPCNFG_EEE_100M_AN; 2958 2959 if (adv1G) 2960 ipcnfg |= E1000_IPCNFG_EEE_1G_AN; 2961 else 2962 ipcnfg &= ~E1000_IPCNFG_EEE_1G_AN; 2963 2964 eeer |= (E1000_EEER_TX_LPI_EN | E1000_EEER_RX_LPI_EN | 2965 E1000_EEER_LPI_FC); 2966 2967 /* This bit should not be set in normal operation. */ 2968 if (eee_su & E1000_EEE_SU_LPI_CLK_STP) 2969 DEBUGOUT("LPI Clock Stop Bit should not be set!\n"); 2970 } else { 2971 ipcnfg &= ~(E1000_IPCNFG_EEE_1G_AN | E1000_IPCNFG_EEE_100M_AN); 2972 eeer &= ~(E1000_EEER_TX_LPI_EN | E1000_EEER_RX_LPI_EN | 2973 E1000_EEER_LPI_FC); 2974 } 2975 E1000_WRITE_REG(hw, E1000_IPCNFG, ipcnfg); 2976 E1000_WRITE_REG(hw, E1000_EEER, eeer); 2977 E1000_READ_REG(hw, E1000_IPCNFG); 2978 E1000_READ_REG(hw, E1000_EEER); 2979out: 2980 2981 return E1000_SUCCESS; 2982} 2983 2984/** 2985 * e1000_set_eee_i354 - Enable/disable EEE support 2986 * @hw: pointer to the HW structure 2987 * @adv1g: boolean flag enabling 1G EEE advertisement 2988 * @adv100m: boolean flag enabling 100M EEE advertisement 2989 * 2990 * Enable/disable EEE legacy mode based on setting in dev_spec structure. 2991 * 2992 **/ 2993s32 e1000_set_eee_i354(struct e1000_hw *hw, bool adv1G, bool adv100M) 2994{ 2995 struct e1000_phy_info *phy = &hw->phy; 2996 s32 ret_val = E1000_SUCCESS; 2997 u16 phy_data; 2998 2999 DEBUGFUNC("e1000_set_eee_i354"); 3000 3001 if ((hw->phy.media_type != e1000_media_type_copper) || 3002 ((phy->id != M88E1543_E_PHY_ID) && 3003 (phy->id != M88E1512_E_PHY_ID))) 3004 goto out; 3005 3006 if (!hw->dev_spec._82575.eee_disable) { 3007 /* Switch to PHY page 18. */ 3008 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_PAGE_ADDR, 18); 3009 if (ret_val) 3010 goto out; 3011 3012 ret_val = phy->ops.read_reg(hw, E1000_M88E1543_EEE_CTRL_1, 3013 &phy_data); 3014 if (ret_val) 3015 goto out; 3016 3017 phy_data |= E1000_M88E1543_EEE_CTRL_1_MS; 3018 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_EEE_CTRL_1, 3019 phy_data); 3020 if (ret_val) 3021 goto out; 3022 3023 /* Return the PHY to page 0. */ 3024 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_PAGE_ADDR, 0); 3025 if (ret_val) 3026 goto out; 3027 3028 /* Turn on EEE advertisement. */ 3029 ret_val = e1000_read_xmdio_reg(hw, E1000_EEE_ADV_ADDR_I354, 3030 E1000_EEE_ADV_DEV_I354, 3031 &phy_data); 3032 if (ret_val) 3033 goto out; 3034 3035 if (adv100M) 3036 phy_data |= E1000_EEE_ADV_100_SUPPORTED; 3037 else 3038 phy_data &= ~E1000_EEE_ADV_100_SUPPORTED; 3039 3040 if (adv1G) 3041 phy_data |= E1000_EEE_ADV_1000_SUPPORTED; 3042 else 3043 phy_data &= ~E1000_EEE_ADV_1000_SUPPORTED; 3044 3045 ret_val = e1000_write_xmdio_reg(hw, E1000_EEE_ADV_ADDR_I354, 3046 E1000_EEE_ADV_DEV_I354, 3047 phy_data); 3048 } else { 3049 /* Turn off EEE advertisement. */ 3050 ret_val = e1000_read_xmdio_reg(hw, E1000_EEE_ADV_ADDR_I354, 3051 E1000_EEE_ADV_DEV_I354, 3052 &phy_data); 3053 if (ret_val) 3054 goto out; 3055 3056 phy_data &= ~(E1000_EEE_ADV_100_SUPPORTED | 3057 E1000_EEE_ADV_1000_SUPPORTED); 3058 ret_val = e1000_write_xmdio_reg(hw, E1000_EEE_ADV_ADDR_I354, 3059 E1000_EEE_ADV_DEV_I354, 3060 phy_data); 3061 } 3062 3063out: 3064 return ret_val; 3065} 3066 3067/** 3068 * e1000_get_eee_status_i354 - Get EEE status 3069 * @hw: pointer to the HW structure 3070 * @status: EEE status 3071 * 3072 * Get EEE status by guessing based on whether Tx or Rx LPI indications have 3073 * been received. 3074 **/ 3075s32 e1000_get_eee_status_i354(struct e1000_hw *hw, bool *status) 3076{ 3077 struct e1000_phy_info *phy = &hw->phy; 3078 s32 ret_val = E1000_SUCCESS; 3079 u16 phy_data; 3080 3081 DEBUGFUNC("e1000_get_eee_status_i354"); 3082 3083 /* Check if EEE is supported on this device. */ 3084 if ((hw->phy.media_type != e1000_media_type_copper) || 3085 ((phy->id != M88E1543_E_PHY_ID) && 3086 (phy->id != M88E1512_E_PHY_ID))) 3087 goto out; 3088 3089 ret_val = e1000_read_xmdio_reg(hw, E1000_PCS_STATUS_ADDR_I354, 3090 E1000_PCS_STATUS_DEV_I354, 3091 &phy_data); 3092 if (ret_val) 3093 goto out; 3094 3095 *status = phy_data & (E1000_PCS_STATUS_TX_LPI_RCVD | 3096 E1000_PCS_STATUS_RX_LPI_RCVD) ? TRUE : FALSE; 3097 3098out: 3099 return ret_val; 3100} 3101 3102/* Due to a hw errata, if the host tries to configure the VFTA register 3103 * while performing queries from the BMC or DMA, then the VFTA in some 3104 * cases won't be written. 3105 */ 3106 3107/** 3108 * e1000_clear_vfta_i350 - Clear VLAN filter table 3109 * @hw: pointer to the HW structure 3110 * 3111 * Clears the register array which contains the VLAN filter table by 3112 * setting all the values to 0. 3113 **/ 3114void e1000_clear_vfta_i350(struct e1000_hw *hw) 3115{ 3116 u32 offset; 3117 int i; 3118 3119 DEBUGFUNC("e1000_clear_vfta_350"); 3120 3121 for (offset = 0; offset < E1000_VLAN_FILTER_TBL_SIZE; offset++) { 3122 for (i = 0; i < 10; i++) 3123 E1000_WRITE_REG_ARRAY(hw, E1000_VFTA, offset, 0); 3124 3125 E1000_WRITE_FLUSH(hw); 3126 } 3127} 3128 3129/** 3130 * e1000_write_vfta_i350 - Write value to VLAN filter table 3131 * @hw: pointer to the HW structure 3132 * @offset: register offset in VLAN filter table 3133 * @value: register value written to VLAN filter table 3134 * 3135 * Writes value at the given offset in the register array which stores 3136 * the VLAN filter table. 3137 **/ 3138void e1000_write_vfta_i350(struct e1000_hw *hw, u32 offset, u32 value) 3139{ 3140 int i; 3141 3142 DEBUGFUNC("e1000_write_vfta_350"); 3143 3144 for (i = 0; i < 10; i++) 3145 E1000_WRITE_REG_ARRAY(hw, E1000_VFTA, offset, value); 3146 3147 E1000_WRITE_FLUSH(hw); 3148} 3149 3150 3151/** 3152 * e1000_set_i2c_bb - Enable I2C bit-bang 3153 * @hw: pointer to the HW structure 3154 * 3155 * Enable I2C bit-bang interface 3156 * 3157 **/ 3158s32 e1000_set_i2c_bb(struct e1000_hw *hw) 3159{ 3160 s32 ret_val = E1000_SUCCESS; 3161 u32 ctrl_ext, i2cparams; 3162 3163 DEBUGFUNC("e1000_set_i2c_bb"); 3164 3165 ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT); 3166 ctrl_ext |= E1000_CTRL_I2C_ENA; 3167 E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext); 3168 E1000_WRITE_FLUSH(hw); 3169 3170 i2cparams = E1000_READ_REG(hw, E1000_I2CPARAMS); 3171 i2cparams |= E1000_I2CBB_EN; 3172 i2cparams |= E1000_I2C_DATA_OE_N; 3173 i2cparams |= E1000_I2C_CLK_OE_N; 3174 E1000_WRITE_REG(hw, E1000_I2CPARAMS, i2cparams); 3175 E1000_WRITE_FLUSH(hw); 3176 3177 return ret_val; 3178} 3179 3180/** 3181 * e1000_read_i2c_byte_generic - Reads 8 bit word over I2C 3182 * @hw: pointer to hardware structure 3183 * @byte_offset: byte offset to read 3184 * @dev_addr: device address 3185 * @data: value read 3186 * 3187 * Performs byte read operation over I2C interface at 3188 * a specified device address. 3189 **/ 3190s32 e1000_read_i2c_byte_generic(struct e1000_hw *hw, u8 byte_offset, 3191 u8 dev_addr, u8 *data) 3192{ 3193 s32 status = E1000_SUCCESS; 3194 u32 max_retry = 10; 3195 u32 retry = 1; 3196 u16 swfw_mask = 0; 3197 3198 bool nack = TRUE; 3199 3200 DEBUGFUNC("e1000_read_i2c_byte_generic"); 3201 3202 swfw_mask = E1000_SWFW_PHY0_SM; 3203 3204 do { 3205 if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask) 3206 != E1000_SUCCESS) { 3207 status = E1000_ERR_SWFW_SYNC; 3208 goto read_byte_out; 3209 } 3210 3211 e1000_i2c_start(hw); 3212 3213 /* Device Address and write indication */ 3214 status = e1000_clock_out_i2c_byte(hw, dev_addr); 3215 if (status != E1000_SUCCESS) 3216 goto fail; 3217 3218 status = e1000_get_i2c_ack(hw); 3219 if (status != E1000_SUCCESS) 3220 goto fail; 3221 3222 status = e1000_clock_out_i2c_byte(hw, byte_offset); 3223 if (status != E1000_SUCCESS) 3224 goto fail; 3225 3226 status = e1000_get_i2c_ack(hw); 3227 if (status != E1000_SUCCESS) 3228 goto fail; 3229 3230 e1000_i2c_start(hw); 3231 3232 /* Device Address and read indication */ 3233 status = e1000_clock_out_i2c_byte(hw, (dev_addr | 0x1)); 3234 if (status != E1000_SUCCESS) 3235 goto fail; 3236 3237 status = e1000_get_i2c_ack(hw); 3238 if (status != E1000_SUCCESS) 3239 goto fail; 3240 3241 status = e1000_clock_in_i2c_byte(hw, data); 3242 if (status != E1000_SUCCESS) 3243 goto fail; 3244 3245 status = e1000_clock_out_i2c_bit(hw, nack); 3246 if (status != E1000_SUCCESS) 3247 goto fail; 3248 3249 e1000_i2c_stop(hw); 3250 break; 3251 3252fail: 3253 hw->mac.ops.release_swfw_sync(hw, swfw_mask); 3254 msec_delay(100); 3255 e1000_i2c_bus_clear(hw); 3256 retry++; 3257 if (retry < max_retry) 3258 DEBUGOUT("I2C byte read error - Retrying.\n"); 3259 else 3260 DEBUGOUT("I2C byte read error.\n"); 3261 3262 } while (retry < max_retry); 3263 3264 hw->mac.ops.release_swfw_sync(hw, swfw_mask); 3265 3266read_byte_out: 3267 3268 return status; 3269} 3270 3271/** 3272 * e1000_write_i2c_byte_generic - Writes 8 bit word over I2C 3273 * @hw: pointer to hardware structure 3274 * @byte_offset: byte offset to write 3275 * @dev_addr: device address 3276 * @data: value to write 3277 * 3278 * Performs byte write operation over I2C interface at 3279 * a specified device address. 3280 **/ 3281s32 e1000_write_i2c_byte_generic(struct e1000_hw *hw, u8 byte_offset, 3282 u8 dev_addr, u8 data) 3283{ 3284 s32 status = E1000_SUCCESS; 3285 u32 max_retry = 1; 3286 u32 retry = 0; 3287 u16 swfw_mask = 0; 3288 3289 DEBUGFUNC("e1000_write_i2c_byte_generic"); 3290 3291 swfw_mask = E1000_SWFW_PHY0_SM; 3292 3293 if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask) != E1000_SUCCESS) { 3294 status = E1000_ERR_SWFW_SYNC; 3295 goto write_byte_out; 3296 } 3297 3298 do { 3299 e1000_i2c_start(hw); 3300 3301 status = e1000_clock_out_i2c_byte(hw, dev_addr); 3302 if (status != E1000_SUCCESS) 3303 goto fail; 3304 3305 status = e1000_get_i2c_ack(hw); 3306 if (status != E1000_SUCCESS) 3307 goto fail; 3308 3309 status = e1000_clock_out_i2c_byte(hw, byte_offset); 3310 if (status != E1000_SUCCESS) 3311 goto fail; 3312 3313 status = e1000_get_i2c_ack(hw); 3314 if (status != E1000_SUCCESS) 3315 goto fail; 3316 3317 status = e1000_clock_out_i2c_byte(hw, data); 3318 if (status != E1000_SUCCESS) 3319 goto fail; 3320 3321 status = e1000_get_i2c_ack(hw); 3322 if (status != E1000_SUCCESS) 3323 goto fail; 3324 3325 e1000_i2c_stop(hw); 3326 break; 3327 3328fail: 3329 e1000_i2c_bus_clear(hw); 3330 retry++; 3331 if (retry < max_retry) 3332 DEBUGOUT("I2C byte write error - Retrying.\n"); 3333 else 3334 DEBUGOUT("I2C byte write error.\n"); 3335 } while (retry < max_retry); 3336 3337 hw->mac.ops.release_swfw_sync(hw, swfw_mask); 3338 3339write_byte_out: 3340 3341 return status; 3342} 3343 3344/** 3345 * e1000_i2c_start - Sets I2C start condition 3346 * @hw: pointer to hardware structure 3347 * 3348 * Sets I2C start condition (High -> Low on SDA while SCL is High) 3349 **/ 3350static void e1000_i2c_start(struct e1000_hw *hw) 3351{ 3352 u32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS); 3353 3354 DEBUGFUNC("e1000_i2c_start"); 3355 3356 /* Start condition must begin with data and clock high */ 3357 e1000_set_i2c_data(hw, &i2cctl, 1); 3358 e1000_raise_i2c_clk(hw, &i2cctl); 3359 3360 /* Setup time for start condition (4.7us) */ 3361 usec_delay(E1000_I2C_T_SU_STA); 3362 3363 e1000_set_i2c_data(hw, &i2cctl, 0); 3364 3365 /* Hold time for start condition (4us) */ 3366 usec_delay(E1000_I2C_T_HD_STA); 3367 3368 e1000_lower_i2c_clk(hw, &i2cctl); 3369 3370 /* Minimum low period of clock is 4.7 us */ 3371 usec_delay(E1000_I2C_T_LOW); 3372 3373} 3374 3375/** 3376 * e1000_i2c_stop - Sets I2C stop condition 3377 * @hw: pointer to hardware structure 3378 * 3379 * Sets I2C stop condition (Low -> High on SDA while SCL is High) 3380 **/ 3381static void e1000_i2c_stop(struct e1000_hw *hw) 3382{ 3383 u32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS); 3384 3385 DEBUGFUNC("e1000_i2c_stop"); 3386 3387 /* Stop condition must begin with data low and clock high */ 3388 e1000_set_i2c_data(hw, &i2cctl, 0); 3389 e1000_raise_i2c_clk(hw, &i2cctl); 3390 3391 /* Setup time for stop condition (4us) */ 3392 usec_delay(E1000_I2C_T_SU_STO); 3393 3394 e1000_set_i2c_data(hw, &i2cctl, 1); 3395 3396 /* bus free time between stop and start (4.7us)*/ 3397 usec_delay(E1000_I2C_T_BUF); 3398} 3399 3400/** 3401 * e1000_clock_in_i2c_byte - Clocks in one byte via I2C 3402 * @hw: pointer to hardware structure 3403 * @data: data byte to clock in 3404 * 3405 * Clocks in one byte data via I2C data/clock 3406 **/ 3407static s32 e1000_clock_in_i2c_byte(struct e1000_hw *hw, u8 *data) 3408{ 3409 s32 i; 3410 bool bit = 0; 3411 3412 DEBUGFUNC("e1000_clock_in_i2c_byte"); 3413 3414 *data = 0; 3415 for (i = 7; i >= 0; i--) { 3416 e1000_clock_in_i2c_bit(hw, &bit); 3417 *data |= bit << i; 3418 } 3419 3420 return E1000_SUCCESS; 3421} 3422 3423/** 3424 * e1000_clock_out_i2c_byte - Clocks out one byte via I2C 3425 * @hw: pointer to hardware structure 3426 * @data: data byte clocked out 3427 * 3428 * Clocks out one byte data via I2C data/clock 3429 **/ 3430static s32 e1000_clock_out_i2c_byte(struct e1000_hw *hw, u8 data) 3431{ 3432 s32 status = E1000_SUCCESS; 3433 s32 i; 3434 u32 i2cctl; 3435 bool bit = 0; 3436 3437 DEBUGFUNC("e1000_clock_out_i2c_byte"); 3438 3439 for (i = 7; i >= 0; i--) { 3440 bit = (data >> i) & 0x1; 3441 status = e1000_clock_out_i2c_bit(hw, bit); 3442 3443 if (status != E1000_SUCCESS) 3444 break; 3445 } 3446 3447 /* Release SDA line (set high) */ 3448 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS); 3449 3450 i2cctl |= E1000_I2C_DATA_OE_N; 3451 E1000_WRITE_REG(hw, E1000_I2CPARAMS, i2cctl); 3452 E1000_WRITE_FLUSH(hw); 3453 3454 return status; 3455} 3456 3457/** 3458 * e1000_get_i2c_ack - Polls for I2C ACK 3459 * @hw: pointer to hardware structure 3460 * 3461 * Clocks in/out one bit via I2C data/clock 3462 **/ 3463static s32 e1000_get_i2c_ack(struct e1000_hw *hw) 3464{ 3465 s32 status = E1000_SUCCESS; 3466 u32 i = 0; 3467 u32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS); 3468 u32 timeout = 10; 3469 bool ack = TRUE; 3470 3471 DEBUGFUNC("e1000_get_i2c_ack"); 3472 3473 e1000_raise_i2c_clk(hw, &i2cctl); 3474 3475 /* Minimum high period of clock is 4us */ 3476 usec_delay(E1000_I2C_T_HIGH); 3477 3478 /* Wait until SCL returns high */ 3479 for (i = 0; i < timeout; i++) { 3480 usec_delay(1); 3481 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS); 3482 if (i2cctl & E1000_I2C_CLK_IN) 3483 break; 3484 } 3485 if (!(i2cctl & E1000_I2C_CLK_IN)) 3486 return E1000_ERR_I2C; 3487 3488 ack = e1000_get_i2c_data(&i2cctl); 3489 if (ack) { 3490 DEBUGOUT("I2C ack was not received.\n"); 3491 status = E1000_ERR_I2C; 3492 } 3493 3494 e1000_lower_i2c_clk(hw, &i2cctl); 3495 3496 /* Minimum low period of clock is 4.7 us */ 3497 usec_delay(E1000_I2C_T_LOW); 3498 3499 return status; 3500} 3501 3502/** 3503 * e1000_clock_in_i2c_bit - Clocks in one bit via I2C data/clock 3504 * @hw: pointer to hardware structure 3505 * @data: read data value 3506 * 3507 * Clocks in one bit via I2C data/clock 3508 **/ 3509static s32 e1000_clock_in_i2c_bit(struct e1000_hw *hw, bool *data) 3510{ 3511 u32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS); 3512 3513 DEBUGFUNC("e1000_clock_in_i2c_bit"); 3514 3515 e1000_raise_i2c_clk(hw, &i2cctl); 3516 3517 /* Minimum high period of clock is 4us */ 3518 usec_delay(E1000_I2C_T_HIGH); 3519 3520 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS); 3521 *data = e1000_get_i2c_data(&i2cctl); 3522 3523 e1000_lower_i2c_clk(hw, &i2cctl); 3524 3525 /* Minimum low period of clock is 4.7 us */ 3526 usec_delay(E1000_I2C_T_LOW); 3527 3528 return E1000_SUCCESS; 3529} 3530 3531/** 3532 * e1000_clock_out_i2c_bit - Clocks in/out one bit via I2C data/clock 3533 * @hw: pointer to hardware structure 3534 * @data: data value to write 3535 * 3536 * Clocks out one bit via I2C data/clock 3537 **/ 3538static s32 e1000_clock_out_i2c_bit(struct e1000_hw *hw, bool data) 3539{ 3540 s32 status; 3541 u32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS); 3542 3543 DEBUGFUNC("e1000_clock_out_i2c_bit"); 3544 3545 status = e1000_set_i2c_data(hw, &i2cctl, data); 3546 if (status == E1000_SUCCESS) { 3547 e1000_raise_i2c_clk(hw, &i2cctl); 3548 3549 /* Minimum high period of clock is 4us */ 3550 usec_delay(E1000_I2C_T_HIGH); 3551 3552 e1000_lower_i2c_clk(hw, &i2cctl); 3553 3554 /* Minimum low period of clock is 4.7 us. 3555 * This also takes care of the data hold time. 3556 */ 3557 usec_delay(E1000_I2C_T_LOW); 3558 } else { 3559 status = E1000_ERR_I2C; 3560 DEBUGOUT1("I2C data was not set to %X\n", data); 3561 } 3562 3563 return status; 3564} 3565/** 3566 * e1000_raise_i2c_clk - Raises the I2C SCL clock 3567 * @hw: pointer to hardware structure 3568 * @i2cctl: Current value of I2CCTL register 3569 * 3570 * Raises the I2C clock line '0'->'1' 3571 **/ 3572static void e1000_raise_i2c_clk(struct e1000_hw *hw, u32 *i2cctl) 3573{ 3574 DEBUGFUNC("e1000_raise_i2c_clk"); 3575 3576 *i2cctl |= E1000_I2C_CLK_OUT; 3577 *i2cctl &= ~E1000_I2C_CLK_OE_N; 3578 E1000_WRITE_REG(hw, E1000_I2CPARAMS, *i2cctl); 3579 E1000_WRITE_FLUSH(hw); 3580 3581 /* SCL rise time (1000ns) */ 3582 usec_delay(E1000_I2C_T_RISE); 3583} 3584 3585/** 3586 * e1000_lower_i2c_clk - Lowers the I2C SCL clock 3587 * @hw: pointer to hardware structure 3588 * @i2cctl: Current value of I2CCTL register 3589 * 3590 * Lowers the I2C clock line '1'->'0' 3591 **/ 3592static void e1000_lower_i2c_clk(struct e1000_hw *hw, u32 *i2cctl) 3593{ 3594 3595 DEBUGFUNC("e1000_lower_i2c_clk"); 3596 3597 *i2cctl &= ~E1000_I2C_CLK_OUT; 3598 *i2cctl &= ~E1000_I2C_CLK_OE_N; 3599 E1000_WRITE_REG(hw, E1000_I2CPARAMS, *i2cctl); 3600 E1000_WRITE_FLUSH(hw); 3601 3602 /* SCL fall time (300ns) */ 3603 usec_delay(E1000_I2C_T_FALL); 3604} 3605 3606/** 3607 * e1000_set_i2c_data - Sets the I2C data bit 3608 * @hw: pointer to hardware structure 3609 * @i2cctl: Current value of I2CCTL register 3610 * @data: I2C data value (0 or 1) to set 3611 * 3612 * Sets the I2C data bit 3613 **/ 3614static s32 e1000_set_i2c_data(struct e1000_hw *hw, u32 *i2cctl, bool data) 3615{ 3616 s32 status = E1000_SUCCESS; 3617 3618 DEBUGFUNC("e1000_set_i2c_data"); 3619 3620 if (data) 3621 *i2cctl |= E1000_I2C_DATA_OUT; 3622 else 3623 *i2cctl &= ~E1000_I2C_DATA_OUT; 3624 3625 *i2cctl &= ~E1000_I2C_DATA_OE_N; 3626 *i2cctl |= E1000_I2C_CLK_OE_N; 3627 E1000_WRITE_REG(hw, E1000_I2CPARAMS, *i2cctl); 3628 E1000_WRITE_FLUSH(hw); 3629 3630 /* Data rise/fall (1000ns/300ns) and set-up time (250ns) */ 3631 usec_delay(E1000_I2C_T_RISE + E1000_I2C_T_FALL + E1000_I2C_T_SU_DATA); 3632 3633 *i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS); 3634 if (data != e1000_get_i2c_data(i2cctl)) { 3635 status = E1000_ERR_I2C; 3636 DEBUGOUT1("Error - I2C data was not set to %X.\n", data); 3637 } 3638 3639 return status; 3640} 3641 3642/** 3643 * e1000_get_i2c_data - Reads the I2C SDA data bit 3644 * @hw: pointer to hardware structure 3645 * @i2cctl: Current value of I2CCTL register 3646 * 3647 * Returns the I2C data bit value 3648 **/ 3649static bool e1000_get_i2c_data(u32 *i2cctl) 3650{ 3651 bool data; 3652 3653 DEBUGFUNC("e1000_get_i2c_data"); 3654 3655 if (*i2cctl & E1000_I2C_DATA_IN) 3656 data = 1; 3657 else 3658 data = 0; 3659 3660 return data; 3661} 3662 3663/** 3664 * e1000_i2c_bus_clear - Clears the I2C bus 3665 * @hw: pointer to hardware structure 3666 * 3667 * Clears the I2C bus by sending nine clock pulses. 3668 * Used when data line is stuck low. 3669 **/ 3670void e1000_i2c_bus_clear(struct e1000_hw *hw) 3671{ 3672 u32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS); 3673 u32 i; 3674 3675 DEBUGFUNC("e1000_i2c_bus_clear"); 3676 3677 e1000_i2c_start(hw); 3678 3679 e1000_set_i2c_data(hw, &i2cctl, 1); 3680 3681 for (i = 0; i < 9; i++) { 3682 e1000_raise_i2c_clk(hw, &i2cctl); 3683 3684 /* Min high period of clock is 4us */ 3685 usec_delay(E1000_I2C_T_HIGH); 3686 3687 e1000_lower_i2c_clk(hw, &i2cctl); 3688 3689 /* Min low period of clock is 4.7us*/ 3690 usec_delay(E1000_I2C_T_LOW); 3691 } 3692 3693 e1000_i2c_start(hw); 3694 3695 /* Put the i2c bus back to default state */ 3696 e1000_i2c_stop(hw); 3697} 3698 3699