1 /****************************************************************************** 2 3 Copyright (c) 2001-2014, Intel Corporation 4 All rights reserved. 5 6 Redistribution and use in source and binary forms, with or without 7 modification, are permitted provided that the following conditions are met: 8 9 1. Redistributions of source code must retain the above copyright notice, 10 this list of conditions and the following disclaimer. 11 12 2. Redistributions in binary form must reproduce the above copyright 13 notice, this list of conditions and the following disclaimer in the 14 documentation and/or other materials provided with the distribution. 15 16 3. Neither the name of the Intel Corporation nor the names of its 17 contributors may be used to endorse or promote products derived from 18 this software without specific prior written permission. 19 20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 POSSIBILITY OF SUCH DAMAGE. 31 32 ******************************************************************************/ 33 /*$FreeBSD$*/ 34 35 #include "e1000_api.h" 36 37 static s32 e1000_wait_autoneg(struct e1000_hw *hw); 38 static s32 e1000_access_phy_wakeup_reg_bm(struct e1000_hw *hw, u32 offset, 39 u16 *data, bool read, bool page_set); 40 static u32 e1000_get_phy_addr_for_hv_page(u32 page); 41 static s32 e1000_access_phy_debug_regs_hv(struct e1000_hw *hw, u32 offset, 42 u16 *data, bool read); 43 44 /* Cable length tables */ 45 static const u16 e1000_m88_cable_length_table[] = { 46 0, 50, 80, 110, 140, 140, E1000_CABLE_LENGTH_UNDEFINED }; 47 #define M88E1000_CABLE_LENGTH_TABLE_SIZE \ 48 (sizeof(e1000_m88_cable_length_table) / \ 49 sizeof(e1000_m88_cable_length_table[0])) 50 51 static const u16 e1000_igp_2_cable_length_table[] = { 52 0, 0, 0, 0, 0, 0, 0, 0, 3, 5, 8, 11, 13, 16, 18, 21, 0, 0, 0, 3, 53 6, 10, 13, 16, 19, 23, 26, 29, 32, 35, 38, 41, 6, 10, 14, 18, 22, 54 26, 30, 33, 37, 41, 44, 48, 51, 54, 58, 61, 21, 26, 31, 35, 40, 55 44, 49, 53, 57, 61, 65, 68, 72, 75, 79, 82, 40, 45, 51, 56, 61, 56 66, 70, 75, 79, 83, 87, 91, 94, 98, 101, 104, 60, 66, 72, 77, 82, 57 87, 92, 96, 100, 104, 108, 111, 114, 117, 119, 121, 83, 89, 95, 58 100, 105, 109, 113, 116, 119, 122, 124, 104, 109, 114, 118, 121, 59 124}; 60 #define IGP02E1000_CABLE_LENGTH_TABLE_SIZE \ 61 (sizeof(e1000_igp_2_cable_length_table) / \ 62 sizeof(e1000_igp_2_cable_length_table[0])) 63 64 /** 65 * e1000_init_phy_ops_generic - Initialize PHY function pointers 66 * @hw: pointer to the HW structure 67 * 68 * Setups up the function pointers to no-op functions 69 **/ 70 void e1000_init_phy_ops_generic(struct e1000_hw *hw) 71 { 72 struct e1000_phy_info *phy = &hw->phy; 73 DEBUGFUNC("e1000_init_phy_ops_generic"); 74 75 /* Initialize function pointers */ 76 phy->ops.init_params = e1000_null_ops_generic; 77 phy->ops.acquire = e1000_null_ops_generic; 78 phy->ops.check_polarity = e1000_null_ops_generic; 79 phy->ops.check_reset_block = e1000_null_ops_generic; 80 phy->ops.commit = e1000_null_ops_generic; 81 phy->ops.force_speed_duplex = e1000_null_ops_generic; 82 phy->ops.get_cfg_done = e1000_null_ops_generic; 83 phy->ops.get_cable_length = e1000_null_ops_generic; 84 phy->ops.get_info = e1000_null_ops_generic; 85 phy->ops.set_page = e1000_null_set_page; 86 phy->ops.read_reg = e1000_null_read_reg; 87 phy->ops.read_reg_locked = e1000_null_read_reg; 88 phy->ops.read_reg_page = e1000_null_read_reg; 89 phy->ops.release = e1000_null_phy_generic; 90 phy->ops.reset = e1000_null_ops_generic; 91 phy->ops.set_d0_lplu_state = e1000_null_lplu_state; 92 phy->ops.set_d3_lplu_state = e1000_null_lplu_state; 93 phy->ops.write_reg = e1000_null_write_reg; 94 phy->ops.write_reg_locked = e1000_null_write_reg; 95 phy->ops.write_reg_page = e1000_null_write_reg; 96 phy->ops.power_up = e1000_null_phy_generic; 97 phy->ops.power_down = e1000_null_phy_generic; 98 phy->ops.read_i2c_byte = e1000_read_i2c_byte_null; 99 phy->ops.write_i2c_byte = e1000_write_i2c_byte_null; 100 phy->ops.cfg_on_link_up = e1000_null_ops_generic; 101 } 102 103 /** 104 * e1000_null_set_page - No-op function, return 0 105 * @hw: pointer to the HW structure 106 **/ 107 s32 e1000_null_set_page(struct e1000_hw E1000_UNUSEDARG *hw, 108 u16 E1000_UNUSEDARG data) 109 { 110 DEBUGFUNC("e1000_null_set_page"); 111 return E1000_SUCCESS; 112 } 113 114 /** 115 * e1000_null_read_reg - No-op function, return 0 116 * @hw: pointer to the HW structure 117 **/ 118 s32 e1000_null_read_reg(struct e1000_hw E1000_UNUSEDARG *hw, 119 u32 E1000_UNUSEDARG offset, u16 E1000_UNUSEDARG *data) 120 { 121 DEBUGFUNC("e1000_null_read_reg"); 122 return E1000_SUCCESS; 123 } 124 125 /** 126 * e1000_null_phy_generic - No-op function, return void 127 * @hw: pointer to the HW structure 128 **/ 129 void e1000_null_phy_generic(struct e1000_hw E1000_UNUSEDARG *hw) 130 { 131 DEBUGFUNC("e1000_null_phy_generic"); 132 return; 133 } 134 135 /** 136 * e1000_null_lplu_state - No-op function, return 0 137 * @hw: pointer to the HW structure 138 **/ 139 s32 e1000_null_lplu_state(struct e1000_hw E1000_UNUSEDARG *hw, 140 bool E1000_UNUSEDARG active) 141 { 142 DEBUGFUNC("e1000_null_lplu_state"); 143 return E1000_SUCCESS; 144 } 145 146 /** 147 * e1000_null_write_reg - No-op function, return 0 148 * @hw: pointer to the HW structure 149 **/ 150 s32 e1000_null_write_reg(struct e1000_hw E1000_UNUSEDARG *hw, 151 u32 E1000_UNUSEDARG offset, u16 E1000_UNUSEDARG data) 152 { 153 DEBUGFUNC("e1000_null_write_reg"); 154 return E1000_SUCCESS; 155 } 156 157 /** 158 * e1000_read_i2c_byte_null - No-op function, return 0 159 * @hw: pointer to hardware structure 160 * @byte_offset: byte offset to write 161 * @dev_addr: device address 162 * @data: data value read 163 * 164 **/ 165 s32 e1000_read_i2c_byte_null(struct e1000_hw E1000_UNUSEDARG *hw, 166 u8 E1000_UNUSEDARG byte_offset, 167 u8 E1000_UNUSEDARG dev_addr, 168 u8 E1000_UNUSEDARG *data) 169 { 170 DEBUGFUNC("e1000_read_i2c_byte_null"); 171 return E1000_SUCCESS; 172 } 173 174 /** 175 * e1000_write_i2c_byte_null - No-op function, return 0 176 * @hw: pointer to hardware structure 177 * @byte_offset: byte offset to write 178 * @dev_addr: device address 179 * @data: data value to write 180 * 181 **/ 182 s32 e1000_write_i2c_byte_null(struct e1000_hw E1000_UNUSEDARG *hw, 183 u8 E1000_UNUSEDARG byte_offset, 184 u8 E1000_UNUSEDARG dev_addr, 185 u8 E1000_UNUSEDARG data) 186 { 187 DEBUGFUNC("e1000_write_i2c_byte_null"); 188 return E1000_SUCCESS; 189 } 190 191 /** 192 * e1000_check_reset_block_generic - Check if PHY reset is blocked 193 * @hw: pointer to the HW structure 194 * 195 * Read the PHY management control register and check whether a PHY reset 196 * is blocked. If a reset is not blocked return E1000_SUCCESS, otherwise 197 * return E1000_BLK_PHY_RESET (12). 198 **/ 199 s32 e1000_check_reset_block_generic(struct e1000_hw *hw) 200 { 201 u32 manc; 202 203 DEBUGFUNC("e1000_check_reset_block"); 204 205 manc = E1000_READ_REG(hw, E1000_MANC); 206 207 return (manc & E1000_MANC_BLK_PHY_RST_ON_IDE) ? 208 E1000_BLK_PHY_RESET : E1000_SUCCESS; 209 } 210 211 /** 212 * e1000_get_phy_id - Retrieve the PHY ID and revision 213 * @hw: pointer to the HW structure 214 * 215 * Reads the PHY registers and stores the PHY ID and possibly the PHY 216 * revision in the hardware structure. 217 **/ 218 s32 e1000_get_phy_id(struct e1000_hw *hw) 219 { 220 struct e1000_phy_info *phy = &hw->phy; 221 s32 ret_val = E1000_SUCCESS; 222 u16 phy_id; 223 u16 retry_count = 0; 224 225 DEBUGFUNC("e1000_get_phy_id"); 226 227 if (!phy->ops.read_reg) 228 return E1000_SUCCESS; 229 230 while (retry_count < 2) { 231 ret_val = phy->ops.read_reg(hw, PHY_ID1, &phy_id); 232 if (ret_val) 233 return ret_val; 234 235 phy->id = (u32)(phy_id << 16); 236 usec_delay(20); 237 ret_val = phy->ops.read_reg(hw, PHY_ID2, &phy_id); 238 if (ret_val) 239 return ret_val; 240 241 phy->id |= (u32)(phy_id & PHY_REVISION_MASK); 242 phy->revision = (u32)(phy_id & ~PHY_REVISION_MASK); 243 244 if (phy->id != 0 && phy->id != PHY_REVISION_MASK) 245 return E1000_SUCCESS; 246 247 retry_count++; 248 } 249 250 return E1000_SUCCESS; 251 } 252 253 /** 254 * e1000_phy_reset_dsp_generic - Reset PHY DSP 255 * @hw: pointer to the HW structure 256 * 257 * Reset the digital signal processor. 258 **/ 259 s32 e1000_phy_reset_dsp_generic(struct e1000_hw *hw) 260 { 261 s32 ret_val; 262 263 DEBUGFUNC("e1000_phy_reset_dsp_generic"); 264 265 if (!hw->phy.ops.write_reg) 266 return E1000_SUCCESS; 267 268 ret_val = hw->phy.ops.write_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xC1); 269 if (ret_val) 270 return ret_val; 271 272 return hw->phy.ops.write_reg(hw, M88E1000_PHY_GEN_CONTROL, 0); 273 } 274 275 /** 276 * e1000_read_phy_reg_mdic - Read MDI control register 277 * @hw: pointer to the HW structure 278 * @offset: register offset to be read 279 * @data: pointer to the read data 280 * 281 * Reads the MDI control register in the PHY at offset and stores the 282 * information read to data. 283 **/ 284 s32 e1000_read_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 *data) 285 { 286 struct e1000_phy_info *phy = &hw->phy; 287 u32 i, mdic = 0; 288 289 DEBUGFUNC("e1000_read_phy_reg_mdic"); 290 291 if (offset > MAX_PHY_REG_ADDRESS) { 292 DEBUGOUT1("PHY Address %d is out of range\n", offset); 293 return -E1000_ERR_PARAM; 294 } 295 296 /* Set up Op-code, Phy Address, and register offset in the MDI 297 * Control register. The MAC will take care of interfacing with the 298 * PHY to retrieve the desired data. 299 */ 300 mdic = ((offset << E1000_MDIC_REG_SHIFT) | 301 (phy->addr << E1000_MDIC_PHY_SHIFT) | 302 (E1000_MDIC_OP_READ)); 303 304 E1000_WRITE_REG(hw, E1000_MDIC, mdic); 305 306 /* Poll the ready bit to see if the MDI read completed 307 * Increasing the time out as testing showed failures with 308 * the lower time out 309 */ 310 for (i = 0; i < (E1000_GEN_POLL_TIMEOUT * 3); i++) { 311 usec_delay_irq(50); 312 mdic = E1000_READ_REG(hw, E1000_MDIC); 313 if (mdic & E1000_MDIC_READY) 314 break; 315 } 316 if (!(mdic & E1000_MDIC_READY)) { 317 DEBUGOUT("MDI Read did not complete\n"); 318 return -E1000_ERR_PHY; 319 } 320 if (mdic & E1000_MDIC_ERROR) { 321 DEBUGOUT("MDI Error\n"); 322 return -E1000_ERR_PHY; 323 } 324 if (((mdic & E1000_MDIC_REG_MASK) >> E1000_MDIC_REG_SHIFT) != offset) { 325 DEBUGOUT2("MDI Read offset error - requested %d, returned %d\n", 326 offset, 327 (mdic & E1000_MDIC_REG_MASK) >> E1000_MDIC_REG_SHIFT); 328 return -E1000_ERR_PHY; 329 } 330 *data = (u16) mdic; 331 332 /* Allow some time after each MDIC transaction to avoid 333 * reading duplicate data in the next MDIC transaction. 334 */ 335 if (hw->mac.type == e1000_pch2lan) 336 usec_delay_irq(100); 337 338 return E1000_SUCCESS; 339 } 340 341 /** 342 * e1000_write_phy_reg_mdic - Write MDI control register 343 * @hw: pointer to the HW structure 344 * @offset: register offset to write to 345 * @data: data to write to register at offset 346 * 347 * Writes data to MDI control register in the PHY at offset. 348 **/ 349 s32 e1000_write_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 data) 350 { 351 struct e1000_phy_info *phy = &hw->phy; 352 u32 i, mdic = 0; 353 354 DEBUGFUNC("e1000_write_phy_reg_mdic"); 355 356 if (offset > MAX_PHY_REG_ADDRESS) { 357 DEBUGOUT1("PHY Address %d is out of range\n", offset); 358 return -E1000_ERR_PARAM; 359 } 360 361 /* Set up Op-code, Phy Address, and register offset in the MDI 362 * Control register. The MAC will take care of interfacing with the 363 * PHY to retrieve the desired data. 364 */ 365 mdic = (((u32)data) | 366 (offset << E1000_MDIC_REG_SHIFT) | 367 (phy->addr << E1000_MDIC_PHY_SHIFT) | 368 (E1000_MDIC_OP_WRITE)); 369 370 E1000_WRITE_REG(hw, E1000_MDIC, mdic); 371 372 /* Poll the ready bit to see if the MDI read completed 373 * Increasing the time out as testing showed failures with 374 * the lower time out 375 */ 376 for (i = 0; i < (E1000_GEN_POLL_TIMEOUT * 3); i++) { 377 usec_delay_irq(50); 378 mdic = E1000_READ_REG(hw, E1000_MDIC); 379 if (mdic & E1000_MDIC_READY) 380 break; 381 } 382 if (!(mdic & E1000_MDIC_READY)) { 383 DEBUGOUT("MDI Write did not complete\n"); 384 return -E1000_ERR_PHY; 385 } 386 if (mdic & E1000_MDIC_ERROR) { 387 DEBUGOUT("MDI Error\n"); 388 return -E1000_ERR_PHY; 389 } 390 if (((mdic & E1000_MDIC_REG_MASK) >> E1000_MDIC_REG_SHIFT) != offset) { 391 DEBUGOUT2("MDI Write offset error - requested %d, returned %d\n", 392 offset, 393 (mdic & E1000_MDIC_REG_MASK) >> E1000_MDIC_REG_SHIFT); 394 return -E1000_ERR_PHY; 395 } 396 397 /* Allow some time after each MDIC transaction to avoid 398 * reading duplicate data in the next MDIC transaction. 399 */ 400 if (hw->mac.type == e1000_pch2lan) 401 usec_delay_irq(100); 402 403 return E1000_SUCCESS; 404 } 405 406 /** 407 * e1000_read_phy_reg_i2c - Read PHY register using i2c 408 * @hw: pointer to the HW structure 409 * @offset: register offset to be read 410 * @data: pointer to the read data 411 * 412 * Reads the PHY register at offset using the i2c interface and stores the 413 * retrieved information in data. 414 **/ 415 s32 e1000_read_phy_reg_i2c(struct e1000_hw *hw, u32 offset, u16 *data) 416 { 417 struct e1000_phy_info *phy = &hw->phy; 418 u32 i, i2ccmd = 0; 419 420 DEBUGFUNC("e1000_read_phy_reg_i2c"); 421 422 /* Set up Op-code, Phy Address, and register address in the I2CCMD 423 * register. The MAC will take care of interfacing with the 424 * PHY to retrieve the desired data. 425 */ 426 i2ccmd = ((offset << E1000_I2CCMD_REG_ADDR_SHIFT) | 427 (phy->addr << E1000_I2CCMD_PHY_ADDR_SHIFT) | 428 (E1000_I2CCMD_OPCODE_READ)); 429 430 E1000_WRITE_REG(hw, E1000_I2CCMD, i2ccmd); 431 432 /* Poll the ready bit to see if the I2C read completed */ 433 for (i = 0; i < E1000_I2CCMD_PHY_TIMEOUT; i++) { 434 usec_delay(50); 435 i2ccmd = E1000_READ_REG(hw, E1000_I2CCMD); 436 if (i2ccmd & E1000_I2CCMD_READY) 437 break; 438 } 439 if (!(i2ccmd & E1000_I2CCMD_READY)) { 440 DEBUGOUT("I2CCMD Read did not complete\n"); 441 return -E1000_ERR_PHY; 442 } 443 if (i2ccmd & E1000_I2CCMD_ERROR) { 444 DEBUGOUT("I2CCMD Error bit set\n"); 445 return -E1000_ERR_PHY; 446 } 447 448 /* Need to byte-swap the 16-bit value. */ 449 *data = ((i2ccmd >> 8) & 0x00FF) | ((i2ccmd << 8) & 0xFF00); 450 451 return E1000_SUCCESS; 452 } 453 454 /** 455 * e1000_write_phy_reg_i2c - Write PHY register using i2c 456 * @hw: pointer to the HW structure 457 * @offset: register offset to write to 458 * @data: data to write at register offset 459 * 460 * Writes the data to PHY register at the offset using the i2c interface. 461 **/ 462 s32 e1000_write_phy_reg_i2c(struct e1000_hw *hw, u32 offset, u16 data) 463 { 464 struct e1000_phy_info *phy = &hw->phy; 465 u32 i, i2ccmd = 0; 466 u16 phy_data_swapped; 467 468 DEBUGFUNC("e1000_write_phy_reg_i2c"); 469 470 /* Prevent overwritting SFP I2C EEPROM which is at A0 address.*/ 471 if ((hw->phy.addr == 0) || (hw->phy.addr > 7)) { 472 DEBUGOUT1("PHY I2C Address %d is out of range.\n", 473 hw->phy.addr); 474 return -E1000_ERR_CONFIG; 475 } 476 477 /* Swap the data bytes for the I2C interface */ 478 phy_data_swapped = ((data >> 8) & 0x00FF) | ((data << 8) & 0xFF00); 479 480 /* Set up Op-code, Phy Address, and register address in the I2CCMD 481 * register. The MAC will take care of interfacing with the 482 * PHY to retrieve the desired data. 483 */ 484 i2ccmd = ((offset << E1000_I2CCMD_REG_ADDR_SHIFT) | 485 (phy->addr << E1000_I2CCMD_PHY_ADDR_SHIFT) | 486 E1000_I2CCMD_OPCODE_WRITE | 487 phy_data_swapped); 488 489 E1000_WRITE_REG(hw, E1000_I2CCMD, i2ccmd); 490 491 /* Poll the ready bit to see if the I2C read completed */ 492 for (i = 0; i < E1000_I2CCMD_PHY_TIMEOUT; i++) { 493 usec_delay(50); 494 i2ccmd = E1000_READ_REG(hw, E1000_I2CCMD); 495 if (i2ccmd & E1000_I2CCMD_READY) 496 break; 497 } 498 if (!(i2ccmd & E1000_I2CCMD_READY)) { 499 DEBUGOUT("I2CCMD Write did not complete\n"); 500 return -E1000_ERR_PHY; 501 } 502 if (i2ccmd & E1000_I2CCMD_ERROR) { 503 DEBUGOUT("I2CCMD Error bit set\n"); 504 return -E1000_ERR_PHY; 505 } 506 507 return E1000_SUCCESS; 508 } 509 510 /** 511 * e1000_read_sfp_data_byte - Reads SFP module data. 512 * @hw: pointer to the HW structure 513 * @offset: byte location offset to be read 514 * @data: read data buffer pointer 515 * 516 * Reads one byte from SFP module data stored 517 * in SFP resided EEPROM memory or SFP diagnostic area. 518 * Function should be called with 519 * E1000_I2CCMD_SFP_DATA_ADDR(<byte offset>) for SFP module database access 520 * E1000_I2CCMD_SFP_DIAG_ADDR(<byte offset>) for SFP diagnostics parameters 521 * access 522 **/ 523 s32 e1000_read_sfp_data_byte(struct e1000_hw *hw, u16 offset, u8 *data) 524 { 525 u32 i = 0; 526 u32 i2ccmd = 0; 527 u32 data_local = 0; 528 529 DEBUGFUNC("e1000_read_sfp_data_byte"); 530 531 if (offset > E1000_I2CCMD_SFP_DIAG_ADDR(255)) { 532 DEBUGOUT("I2CCMD command address exceeds upper limit\n"); 533 return -E1000_ERR_PHY; 534 } 535 536 /* Set up Op-code, EEPROM Address,in the I2CCMD 537 * register. The MAC will take care of interfacing with the 538 * EEPROM to retrieve the desired data. 539 */ 540 i2ccmd = ((offset << E1000_I2CCMD_REG_ADDR_SHIFT) | 541 E1000_I2CCMD_OPCODE_READ); 542 543 E1000_WRITE_REG(hw, E1000_I2CCMD, i2ccmd); 544 545 /* Poll the ready bit to see if the I2C read completed */ 546 for (i = 0; i < E1000_I2CCMD_PHY_TIMEOUT; i++) { 547 usec_delay(50); 548 data_local = E1000_READ_REG(hw, E1000_I2CCMD); 549 if (data_local & E1000_I2CCMD_READY) 550 break; 551 } 552 if (!(data_local & E1000_I2CCMD_READY)) { 553 DEBUGOUT("I2CCMD Read did not complete\n"); 554 return -E1000_ERR_PHY; 555 } 556 if (data_local & E1000_I2CCMD_ERROR) { 557 DEBUGOUT("I2CCMD Error bit set\n"); 558 return -E1000_ERR_PHY; 559 } 560 *data = (u8) data_local & 0xFF; 561 562 return E1000_SUCCESS; 563 } 564 565 /** 566 * e1000_write_sfp_data_byte - Writes SFP module data. 567 * @hw: pointer to the HW structure 568 * @offset: byte location offset to write to 569 * @data: data to write 570 * 571 * Writes one byte to SFP module data stored 572 * in SFP resided EEPROM memory or SFP diagnostic area. 573 * Function should be called with 574 * E1000_I2CCMD_SFP_DATA_ADDR(<byte offset>) for SFP module database access 575 * E1000_I2CCMD_SFP_DIAG_ADDR(<byte offset>) for SFP diagnostics parameters 576 * access 577 **/ 578 s32 e1000_write_sfp_data_byte(struct e1000_hw *hw, u16 offset, u8 data) 579 { 580 u32 i = 0; 581 u32 i2ccmd = 0; 582 u32 data_local = 0; 583 584 DEBUGFUNC("e1000_write_sfp_data_byte"); 585 586 if (offset > E1000_I2CCMD_SFP_DIAG_ADDR(255)) { 587 DEBUGOUT("I2CCMD command address exceeds upper limit\n"); 588 return -E1000_ERR_PHY; 589 } 590 /* The programming interface is 16 bits wide 591 * so we need to read the whole word first 592 * then update appropriate byte lane and write 593 * the updated word back. 594 */ 595 /* Set up Op-code, EEPROM Address,in the I2CCMD 596 * register. The MAC will take care of interfacing 597 * with an EEPROM to write the data given. 598 */ 599 i2ccmd = ((offset << E1000_I2CCMD_REG_ADDR_SHIFT) | 600 E1000_I2CCMD_OPCODE_READ); 601 /* Set a command to read single word */ 602 E1000_WRITE_REG(hw, E1000_I2CCMD, i2ccmd); 603 for (i = 0; i < E1000_I2CCMD_PHY_TIMEOUT; i++) { 604 usec_delay(50); 605 /* Poll the ready bit to see if lastly 606 * launched I2C operation completed 607 */ 608 i2ccmd = E1000_READ_REG(hw, E1000_I2CCMD); 609 if (i2ccmd & E1000_I2CCMD_READY) { 610 /* Check if this is READ or WRITE phase */ 611 if ((i2ccmd & E1000_I2CCMD_OPCODE_READ) == 612 E1000_I2CCMD_OPCODE_READ) { 613 /* Write the selected byte 614 * lane and update whole word 615 */ 616 data_local = i2ccmd & 0xFF00; 617 data_local |= data; 618 i2ccmd = ((offset << 619 E1000_I2CCMD_REG_ADDR_SHIFT) | 620 E1000_I2CCMD_OPCODE_WRITE | data_local); 621 E1000_WRITE_REG(hw, E1000_I2CCMD, i2ccmd); 622 } else { 623 break; 624 } 625 } 626 } 627 if (!(i2ccmd & E1000_I2CCMD_READY)) { 628 DEBUGOUT("I2CCMD Write did not complete\n"); 629 return -E1000_ERR_PHY; 630 } 631 if (i2ccmd & E1000_I2CCMD_ERROR) { 632 DEBUGOUT("I2CCMD Error bit set\n"); 633 return -E1000_ERR_PHY; 634 } 635 return E1000_SUCCESS; 636 } 637 638 /** 639 * e1000_read_phy_reg_m88 - Read m88 PHY register 640 * @hw: pointer to the HW structure 641 * @offset: register offset to be read 642 * @data: pointer to the read data 643 * 644 * Acquires semaphore, if necessary, then reads the PHY register at offset 645 * and storing the retrieved information in data. Release any acquired 646 * semaphores before exiting. 647 **/ 648 s32 e1000_read_phy_reg_m88(struct e1000_hw *hw, u32 offset, u16 *data) 649 { 650 s32 ret_val; 651 652 DEBUGFUNC("e1000_read_phy_reg_m88"); 653 654 if (!hw->phy.ops.acquire) 655 return E1000_SUCCESS; 656 657 ret_val = hw->phy.ops.acquire(hw); 658 if (ret_val) 659 return ret_val; 660 661 ret_val = e1000_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset, 662 data); 663 664 hw->phy.ops.release(hw); 665 666 return ret_val; 667 } 668 669 /** 670 * e1000_write_phy_reg_m88 - Write m88 PHY register 671 * @hw: pointer to the HW structure 672 * @offset: register offset to write to 673 * @data: data to write at register offset 674 * 675 * Acquires semaphore, if necessary, then writes the data to PHY register 676 * at the offset. Release any acquired semaphores before exiting. 677 **/ 678 s32 e1000_write_phy_reg_m88(struct e1000_hw *hw, u32 offset, u16 data) 679 { 680 s32 ret_val; 681 682 DEBUGFUNC("e1000_write_phy_reg_m88"); 683 684 if (!hw->phy.ops.acquire) 685 return E1000_SUCCESS; 686 687 ret_val = hw->phy.ops.acquire(hw); 688 if (ret_val) 689 return ret_val; 690 691 ret_val = e1000_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset, 692 data); 693 694 hw->phy.ops.release(hw); 695 696 return ret_val; 697 } 698 699 /** 700 * e1000_set_page_igp - Set page as on IGP-like PHY(s) 701 * @hw: pointer to the HW structure 702 * @page: page to set (shifted left when necessary) 703 * 704 * Sets PHY page required for PHY register access. Assumes semaphore is 705 * already acquired. Note, this function sets phy.addr to 1 so the caller 706 * must set it appropriately (if necessary) after this function returns. 707 **/ 708 s32 e1000_set_page_igp(struct e1000_hw *hw, u16 page) 709 { 710 DEBUGFUNC("e1000_set_page_igp"); 711 712 DEBUGOUT1("Setting page 0x%x\n", page); 713 714 hw->phy.addr = 1; 715 716 return e1000_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, page); 717 } 718 719 /** 720 * __e1000_read_phy_reg_igp - Read igp PHY register 721 * @hw: pointer to the HW structure 722 * @offset: register offset to be read 723 * @data: pointer to the read data 724 * @locked: semaphore has already been acquired or not 725 * 726 * Acquires semaphore, if necessary, then reads the PHY register at offset 727 * and stores the retrieved information in data. Release any acquired 728 * semaphores before exiting. 729 **/ 730 static s32 __e1000_read_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 *data, 731 bool locked) 732 { 733 s32 ret_val = E1000_SUCCESS; 734 735 DEBUGFUNC("__e1000_read_phy_reg_igp"); 736 737 if (!locked) { 738 if (!hw->phy.ops.acquire) 739 return E1000_SUCCESS; 740 741 ret_val = hw->phy.ops.acquire(hw); 742 if (ret_val) 743 return ret_val; 744 } 745 746 if (offset > MAX_PHY_MULTI_PAGE_REG) 747 ret_val = e1000_write_phy_reg_mdic(hw, 748 IGP01E1000_PHY_PAGE_SELECT, 749 (u16)offset); 750 if (!ret_val) 751 ret_val = e1000_read_phy_reg_mdic(hw, 752 MAX_PHY_REG_ADDRESS & offset, 753 data); 754 if (!locked) 755 hw->phy.ops.release(hw); 756 757 return ret_val; 758 } 759 760 /** 761 * e1000_read_phy_reg_igp - Read igp PHY register 762 * @hw: pointer to the HW structure 763 * @offset: register offset to be read 764 * @data: pointer to the read data 765 * 766 * Acquires semaphore then reads the PHY register at offset and stores the 767 * retrieved information in data. 768 * Release the acquired semaphore before exiting. 769 **/ 770 s32 e1000_read_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 *data) 771 { 772 return __e1000_read_phy_reg_igp(hw, offset, data, FALSE); 773 } 774 775 /** 776 * e1000_read_phy_reg_igp_locked - Read igp PHY register 777 * @hw: pointer to the HW structure 778 * @offset: register offset to be read 779 * @data: pointer to the read data 780 * 781 * Reads the PHY register at offset and stores the retrieved information 782 * in data. Assumes semaphore already acquired. 783 **/ 784 s32 e1000_read_phy_reg_igp_locked(struct e1000_hw *hw, u32 offset, u16 *data) 785 { 786 return __e1000_read_phy_reg_igp(hw, offset, data, TRUE); 787 } 788 789 /** 790 * e1000_write_phy_reg_igp - Write igp PHY register 791 * @hw: pointer to the HW structure 792 * @offset: register offset to write to 793 * @data: data to write at register offset 794 * @locked: semaphore has already been acquired or not 795 * 796 * Acquires semaphore, if necessary, then writes the data to PHY register 797 * at the offset. Release any acquired semaphores before exiting. 798 **/ 799 static s32 __e1000_write_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 data, 800 bool locked) 801 { 802 s32 ret_val = E1000_SUCCESS; 803 804 DEBUGFUNC("e1000_write_phy_reg_igp"); 805 806 if (!locked) { 807 if (!hw->phy.ops.acquire) 808 return E1000_SUCCESS; 809 810 ret_val = hw->phy.ops.acquire(hw); 811 if (ret_val) 812 return ret_val; 813 } 814 815 if (offset > MAX_PHY_MULTI_PAGE_REG) 816 ret_val = e1000_write_phy_reg_mdic(hw, 817 IGP01E1000_PHY_PAGE_SELECT, 818 (u16)offset); 819 if (!ret_val) 820 ret_val = e1000_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & 821 offset, 822 data); 823 if (!locked) 824 hw->phy.ops.release(hw); 825 826 return ret_val; 827 } 828 829 /** 830 * e1000_write_phy_reg_igp - Write igp PHY register 831 * @hw: pointer to the HW structure 832 * @offset: register offset to write to 833 * @data: data to write at register offset 834 * 835 * Acquires semaphore then writes the data to PHY register 836 * at the offset. Release any acquired semaphores before exiting. 837 **/ 838 s32 e1000_write_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 data) 839 { 840 return __e1000_write_phy_reg_igp(hw, offset, data, FALSE); 841 } 842 843 /** 844 * e1000_write_phy_reg_igp_locked - Write igp PHY register 845 * @hw: pointer to the HW structure 846 * @offset: register offset to write to 847 * @data: data to write at register offset 848 * 849 * Writes the data to PHY register at the offset. 850 * Assumes semaphore already acquired. 851 **/ 852 s32 e1000_write_phy_reg_igp_locked(struct e1000_hw *hw, u32 offset, u16 data) 853 { 854 return __e1000_write_phy_reg_igp(hw, offset, data, TRUE); 855 } 856 857 /** 858 * __e1000_read_kmrn_reg - Read kumeran register 859 * @hw: pointer to the HW structure 860 * @offset: register offset to be read 861 * @data: pointer to the read data 862 * @locked: semaphore has already been acquired or not 863 * 864 * Acquires semaphore, if necessary. Then reads the PHY register at offset 865 * using the kumeran interface. The information retrieved is stored in data. 866 * Release any acquired semaphores before exiting. 867 **/ 868 static s32 __e1000_read_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 *data, 869 bool locked) 870 { 871 u32 kmrnctrlsta; 872 873 DEBUGFUNC("__e1000_read_kmrn_reg"); 874 875 if (!locked) { 876 s32 ret_val = E1000_SUCCESS; 877 878 if (!hw->phy.ops.acquire) 879 return E1000_SUCCESS; 880 881 ret_val = hw->phy.ops.acquire(hw); 882 if (ret_val) 883 return ret_val; 884 } 885 886 kmrnctrlsta = ((offset << E1000_KMRNCTRLSTA_OFFSET_SHIFT) & 887 E1000_KMRNCTRLSTA_OFFSET) | E1000_KMRNCTRLSTA_REN; 888 E1000_WRITE_REG(hw, E1000_KMRNCTRLSTA, kmrnctrlsta); 889 E1000_WRITE_FLUSH(hw); 890 891 usec_delay(2); 892 893 kmrnctrlsta = E1000_READ_REG(hw, E1000_KMRNCTRLSTA); 894 *data = (u16)kmrnctrlsta; 895 896 if (!locked) 897 hw->phy.ops.release(hw); 898 899 return E1000_SUCCESS; 900 } 901 902 /** 903 * e1000_read_kmrn_reg_generic - Read kumeran register 904 * @hw: pointer to the HW structure 905 * @offset: register offset to be read 906 * @data: pointer to the read data 907 * 908 * Acquires semaphore then reads the PHY register at offset using the 909 * kumeran interface. The information retrieved is stored in data. 910 * Release the acquired semaphore before exiting. 911 **/ 912 s32 e1000_read_kmrn_reg_generic(struct e1000_hw *hw, u32 offset, u16 *data) 913 { 914 return __e1000_read_kmrn_reg(hw, offset, data, FALSE); 915 } 916 917 /** 918 * e1000_read_kmrn_reg_locked - Read kumeran register 919 * @hw: pointer to the HW structure 920 * @offset: register offset to be read 921 * @data: pointer to the read data 922 * 923 * Reads the PHY register at offset using the kumeran interface. The 924 * information retrieved is stored in data. 925 * Assumes semaphore already acquired. 926 **/ 927 s32 e1000_read_kmrn_reg_locked(struct e1000_hw *hw, u32 offset, u16 *data) 928 { 929 return __e1000_read_kmrn_reg(hw, offset, data, TRUE); 930 } 931 932 /** 933 * __e1000_write_kmrn_reg - Write kumeran register 934 * @hw: pointer to the HW structure 935 * @offset: register offset to write to 936 * @data: data to write at register offset 937 * @locked: semaphore has already been acquired or not 938 * 939 * Acquires semaphore, if necessary. Then write the data to PHY register 940 * at the offset using the kumeran interface. Release any acquired semaphores 941 * before exiting. 942 **/ 943 static s32 __e1000_write_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 data, 944 bool locked) 945 { 946 u32 kmrnctrlsta; 947 948 DEBUGFUNC("e1000_write_kmrn_reg_generic"); 949 950 if (!locked) { 951 s32 ret_val = E1000_SUCCESS; 952 953 if (!hw->phy.ops.acquire) 954 return E1000_SUCCESS; 955 956 ret_val = hw->phy.ops.acquire(hw); 957 if (ret_val) 958 return ret_val; 959 } 960 961 kmrnctrlsta = ((offset << E1000_KMRNCTRLSTA_OFFSET_SHIFT) & 962 E1000_KMRNCTRLSTA_OFFSET) | data; 963 E1000_WRITE_REG(hw, E1000_KMRNCTRLSTA, kmrnctrlsta); 964 E1000_WRITE_FLUSH(hw); 965 966 usec_delay(2); 967 968 if (!locked) 969 hw->phy.ops.release(hw); 970 971 return E1000_SUCCESS; 972 } 973 974 /** 975 * e1000_write_kmrn_reg_generic - Write kumeran register 976 * @hw: pointer to the HW structure 977 * @offset: register offset to write to 978 * @data: data to write at register offset 979 * 980 * Acquires semaphore then writes the data to the PHY register at the offset 981 * using the kumeran interface. Release the acquired semaphore before exiting. 982 **/ 983 s32 e1000_write_kmrn_reg_generic(struct e1000_hw *hw, u32 offset, u16 data) 984 { 985 return __e1000_write_kmrn_reg(hw, offset, data, FALSE); 986 } 987 988 /** 989 * e1000_write_kmrn_reg_locked - Write kumeran register 990 * @hw: pointer to the HW structure 991 * @offset: register offset to write to 992 * @data: data to write at register offset 993 * 994 * Write the data to PHY register at the offset using the kumeran interface. 995 * Assumes semaphore already acquired. 996 **/ 997 s32 e1000_write_kmrn_reg_locked(struct e1000_hw *hw, u32 offset, u16 data) 998 { 999 return __e1000_write_kmrn_reg(hw, offset, data, TRUE); 1000 } 1001 1002 /** 1003 * e1000_set_master_slave_mode - Setup PHY for Master/slave mode 1004 * @hw: pointer to the HW structure 1005 * 1006 * Sets up Master/slave mode 1007 **/ 1008 static s32 e1000_set_master_slave_mode(struct e1000_hw *hw) 1009 { 1010 s32 ret_val; 1011 u16 phy_data; 1012 1013 /* Resolve Master/Slave mode */ 1014 ret_val = hw->phy.ops.read_reg(hw, PHY_1000T_CTRL, &phy_data); 1015 if (ret_val) 1016 return ret_val; 1017 1018 /* load defaults for future use */ 1019 hw->phy.original_ms_type = (phy_data & CR_1000T_MS_ENABLE) ? 1020 ((phy_data & CR_1000T_MS_VALUE) ? 1021 e1000_ms_force_master : 1022 e1000_ms_force_slave) : e1000_ms_auto; 1023 1024 switch (hw->phy.ms_type) { 1025 case e1000_ms_force_master: 1026 phy_data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE); 1027 break; 1028 case e1000_ms_force_slave: 1029 phy_data |= CR_1000T_MS_ENABLE; 1030 phy_data &= ~(CR_1000T_MS_VALUE); 1031 break; 1032 case e1000_ms_auto: 1033 phy_data &= ~CR_1000T_MS_ENABLE; 1034 /* fall-through */ 1035 default: 1036 break; 1037 } 1038 1039 return hw->phy.ops.write_reg(hw, PHY_1000T_CTRL, phy_data); 1040 } 1041 1042 /** 1043 * e1000_copper_link_setup_82577 - Setup 82577 PHY for copper link 1044 * @hw: pointer to the HW structure 1045 * 1046 * Sets up Carrier-sense on Transmit and downshift values. 1047 **/ 1048 s32 e1000_copper_link_setup_82577(struct e1000_hw *hw) 1049 { 1050 s32 ret_val; 1051 u16 phy_data; 1052 1053 DEBUGFUNC("e1000_copper_link_setup_82577"); 1054 1055 if (hw->phy.type == e1000_phy_82580) { 1056 ret_val = hw->phy.ops.reset(hw); 1057 if (ret_val) { 1058 DEBUGOUT("Error resetting the PHY.\n"); 1059 return ret_val; 1060 } 1061 } 1062 1063 /* Enable CRS on Tx. This must be set for half-duplex operation. */ 1064 ret_val = hw->phy.ops.read_reg(hw, I82577_CFG_REG, &phy_data); 1065 if (ret_val) 1066 return ret_val; 1067 1068 phy_data |= I82577_CFG_ASSERT_CRS_ON_TX; 1069 1070 /* Enable downshift */ 1071 phy_data |= I82577_CFG_ENABLE_DOWNSHIFT; 1072 1073 ret_val = hw->phy.ops.write_reg(hw, I82577_CFG_REG, phy_data); 1074 if (ret_val) 1075 return ret_val; 1076 1077 /* Set MDI/MDIX mode */ 1078 ret_val = hw->phy.ops.read_reg(hw, I82577_PHY_CTRL_2, &phy_data); 1079 if (ret_val) 1080 return ret_val; 1081 phy_data &= ~I82577_PHY_CTRL2_MDIX_CFG_MASK; 1082 /* Options: 1083 * 0 - Auto (default) 1084 * 1 - MDI mode 1085 * 2 - MDI-X mode 1086 */ 1087 switch (hw->phy.mdix) { 1088 case 1: 1089 break; 1090 case 2: 1091 phy_data |= I82577_PHY_CTRL2_MANUAL_MDIX; 1092 break; 1093 case 0: 1094 default: 1095 phy_data |= I82577_PHY_CTRL2_AUTO_MDI_MDIX; 1096 break; 1097 } 1098 ret_val = hw->phy.ops.write_reg(hw, I82577_PHY_CTRL_2, phy_data); 1099 if (ret_val) 1100 return ret_val; 1101 1102 return e1000_set_master_slave_mode(hw); 1103 } 1104 1105 /** 1106 * e1000_copper_link_setup_m88 - Setup m88 PHY's for copper link 1107 * @hw: pointer to the HW structure 1108 * 1109 * Sets up MDI/MDI-X and polarity for m88 PHY's. If necessary, transmit clock 1110 * and downshift values are set also. 1111 **/ 1112 s32 e1000_copper_link_setup_m88(struct e1000_hw *hw) 1113 { 1114 struct e1000_phy_info *phy = &hw->phy; 1115 s32 ret_val; 1116 u16 phy_data; 1117 1118 DEBUGFUNC("e1000_copper_link_setup_m88"); 1119 1120 1121 /* Enable CRS on Tx. This must be set for half-duplex operation. */ 1122 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); 1123 if (ret_val) 1124 return ret_val; 1125 1126 /* For BM PHY this bit is downshift enable */ 1127 if (phy->type != e1000_phy_bm) 1128 phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX; 1129 1130 /* Options: 1131 * MDI/MDI-X = 0 (default) 1132 * 0 - Auto for all speeds 1133 * 1 - MDI mode 1134 * 2 - MDI-X mode 1135 * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes) 1136 */ 1137 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE; 1138 1139 switch (phy->mdix) { 1140 case 1: 1141 phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE; 1142 break; 1143 case 2: 1144 phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE; 1145 break; 1146 case 3: 1147 phy_data |= M88E1000_PSCR_AUTO_X_1000T; 1148 break; 1149 case 0: 1150 default: 1151 phy_data |= M88E1000_PSCR_AUTO_X_MODE; 1152 break; 1153 } 1154 1155 /* Options: 1156 * disable_polarity_correction = 0 (default) 1157 * Automatic Correction for Reversed Cable Polarity 1158 * 0 - Disabled 1159 * 1 - Enabled 1160 */ 1161 phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL; 1162 if (phy->disable_polarity_correction) 1163 phy_data |= M88E1000_PSCR_POLARITY_REVERSAL; 1164 1165 /* Enable downshift on BM (disabled by default) */ 1166 if (phy->type == e1000_phy_bm) { 1167 /* For 82574/82583, first disable then enable downshift */ 1168 if (phy->id == BME1000_E_PHY_ID_R2) { 1169 phy_data &= ~BME1000_PSCR_ENABLE_DOWNSHIFT; 1170 ret_val = phy->ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL, 1171 phy_data); 1172 if (ret_val) 1173 return ret_val; 1174 /* Commit the changes. */ 1175 ret_val = phy->ops.commit(hw); 1176 if (ret_val) { 1177 DEBUGOUT("Error committing the PHY changes\n"); 1178 return ret_val; 1179 } 1180 } 1181 1182 phy_data |= BME1000_PSCR_ENABLE_DOWNSHIFT; 1183 } 1184 1185 ret_val = phy->ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); 1186 if (ret_val) 1187 return ret_val; 1188 1189 if ((phy->type == e1000_phy_m88) && 1190 (phy->revision < E1000_REVISION_4) && 1191 (phy->id != BME1000_E_PHY_ID_R2)) { 1192 /* Force TX_CLK in the Extended PHY Specific Control Register 1193 * to 25MHz clock. 1194 */ 1195 ret_val = phy->ops.read_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, 1196 &phy_data); 1197 if (ret_val) 1198 return ret_val; 1199 1200 phy_data |= M88E1000_EPSCR_TX_CLK_25; 1201 1202 if ((phy->revision == E1000_REVISION_2) && 1203 (phy->id == M88E1111_I_PHY_ID)) { 1204 /* 82573L PHY - set the downshift counter to 5x. */ 1205 phy_data &= ~M88EC018_EPSCR_DOWNSHIFT_COUNTER_MASK; 1206 phy_data |= M88EC018_EPSCR_DOWNSHIFT_COUNTER_5X; 1207 } else { 1208 /* Configure Master and Slave downshift values */ 1209 phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK | 1210 M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK); 1211 phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X | 1212 M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X); 1213 } 1214 ret_val = phy->ops.write_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, 1215 phy_data); 1216 if (ret_val) 1217 return ret_val; 1218 } 1219 1220 if ((phy->type == e1000_phy_bm) && (phy->id == BME1000_E_PHY_ID_R2)) { 1221 /* Set PHY page 0, register 29 to 0x0003 */ 1222 ret_val = phy->ops.write_reg(hw, 29, 0x0003); 1223 if (ret_val) 1224 return ret_val; 1225 1226 /* Set PHY page 0, register 30 to 0x0000 */ 1227 ret_val = phy->ops.write_reg(hw, 30, 0x0000); 1228 if (ret_val) 1229 return ret_val; 1230 } 1231 1232 /* Commit the changes. */ 1233 ret_val = phy->ops.commit(hw); 1234 if (ret_val) { 1235 DEBUGOUT("Error committing the PHY changes\n"); 1236 return ret_val; 1237 } 1238 1239 if (phy->type == e1000_phy_82578) { 1240 ret_val = phy->ops.read_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, 1241 &phy_data); 1242 if (ret_val) 1243 return ret_val; 1244 1245 /* 82578 PHY - set the downshift count to 1x. */ 1246 phy_data |= I82578_EPSCR_DOWNSHIFT_ENABLE; 1247 phy_data &= ~I82578_EPSCR_DOWNSHIFT_COUNTER_MASK; 1248 ret_val = phy->ops.write_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, 1249 phy_data); 1250 if (ret_val) 1251 return ret_val; 1252 } 1253 1254 return E1000_SUCCESS; 1255 } 1256 1257 /** 1258 * e1000_copper_link_setup_m88_gen2 - Setup m88 PHY's for copper link 1259 * @hw: pointer to the HW structure 1260 * 1261 * Sets up MDI/MDI-X and polarity for i347-AT4, m88e1322 and m88e1112 PHY's. 1262 * Also enables and sets the downshift parameters. 1263 **/ 1264 s32 e1000_copper_link_setup_m88_gen2(struct e1000_hw *hw) 1265 { 1266 struct e1000_phy_info *phy = &hw->phy; 1267 s32 ret_val; 1268 u16 phy_data; 1269 1270 DEBUGFUNC("e1000_copper_link_setup_m88_gen2"); 1271 1272 1273 /* Enable CRS on Tx. This must be set for half-duplex operation. */ 1274 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); 1275 if (ret_val) 1276 return ret_val; 1277 1278 /* Options: 1279 * MDI/MDI-X = 0 (default) 1280 * 0 - Auto for all speeds 1281 * 1 - MDI mode 1282 * 2 - MDI-X mode 1283 * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes) 1284 */ 1285 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE; 1286 1287 switch (phy->mdix) { 1288 case 1: 1289 phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE; 1290 break; 1291 case 2: 1292 phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE; 1293 break; 1294 case 3: 1295 /* M88E1112 does not support this mode) */ 1296 if (phy->id != M88E1112_E_PHY_ID) { 1297 phy_data |= M88E1000_PSCR_AUTO_X_1000T; 1298 break; 1299 } 1300 case 0: 1301 default: 1302 phy_data |= M88E1000_PSCR_AUTO_X_MODE; 1303 break; 1304 } 1305 1306 /* Options: 1307 * disable_polarity_correction = 0 (default) 1308 * Automatic Correction for Reversed Cable Polarity 1309 * 0 - Disabled 1310 * 1 - Enabled 1311 */ 1312 phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL; 1313 if (phy->disable_polarity_correction) 1314 phy_data |= M88E1000_PSCR_POLARITY_REVERSAL; 1315 1316 /* Enable downshift and setting it to X6 */ 1317 if (phy->id == M88E1543_E_PHY_ID) { 1318 phy_data &= ~I347AT4_PSCR_DOWNSHIFT_ENABLE; 1319 ret_val = 1320 phy->ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); 1321 if (ret_val) 1322 return ret_val; 1323 1324 ret_val = phy->ops.commit(hw); 1325 if (ret_val) { 1326 DEBUGOUT("Error committing the PHY changes\n"); 1327 return ret_val; 1328 } 1329 } 1330 1331 phy_data &= ~I347AT4_PSCR_DOWNSHIFT_MASK; 1332 phy_data |= I347AT4_PSCR_DOWNSHIFT_6X; 1333 phy_data |= I347AT4_PSCR_DOWNSHIFT_ENABLE; 1334 1335 ret_val = phy->ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); 1336 if (ret_val) 1337 return ret_val; 1338 1339 /* Commit the changes. */ 1340 ret_val = phy->ops.commit(hw); 1341 if (ret_val) { 1342 DEBUGOUT("Error committing the PHY changes\n"); 1343 return ret_val; 1344 } 1345 1346 ret_val = e1000_set_master_slave_mode(hw); 1347 if (ret_val) 1348 return ret_val; 1349 1350 return E1000_SUCCESS; 1351 } 1352 1353 /** 1354 * e1000_copper_link_setup_igp - Setup igp PHY's for copper link 1355 * @hw: pointer to the HW structure 1356 * 1357 * Sets up LPLU, MDI/MDI-X, polarity, Smartspeed and Master/Slave config for 1358 * igp PHY's. 1359 **/ 1360 s32 e1000_copper_link_setup_igp(struct e1000_hw *hw) 1361 { 1362 struct e1000_phy_info *phy = &hw->phy; 1363 s32 ret_val; 1364 u16 data; 1365 1366 DEBUGFUNC("e1000_copper_link_setup_igp"); 1367 1368 1369 ret_val = hw->phy.ops.reset(hw); 1370 if (ret_val) { 1371 DEBUGOUT("Error resetting the PHY.\n"); 1372 return ret_val; 1373 } 1374 1375 /* Wait 100ms for MAC to configure PHY from NVM settings, to avoid 1376 * timeout issues when LFS is enabled. 1377 */ 1378 msec_delay(100); 1379 1380 /* The NVM settings will configure LPLU in D3 for 1381 * non-IGP1 PHYs. 1382 */ 1383 if (phy->type == e1000_phy_igp) { 1384 /* disable lplu d3 during driver init */ 1385 ret_val = hw->phy.ops.set_d3_lplu_state(hw, FALSE); 1386 if (ret_val) { 1387 DEBUGOUT("Error Disabling LPLU D3\n"); 1388 return ret_val; 1389 } 1390 } 1391 1392 /* disable lplu d0 during driver init */ 1393 if (hw->phy.ops.set_d0_lplu_state) { 1394 ret_val = hw->phy.ops.set_d0_lplu_state(hw, FALSE); 1395 if (ret_val) { 1396 DEBUGOUT("Error Disabling LPLU D0\n"); 1397 return ret_val; 1398 } 1399 } 1400 /* Configure mdi-mdix settings */ 1401 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CTRL, &data); 1402 if (ret_val) 1403 return ret_val; 1404 1405 data &= ~IGP01E1000_PSCR_AUTO_MDIX; 1406 1407 switch (phy->mdix) { 1408 case 1: 1409 data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX; 1410 break; 1411 case 2: 1412 data |= IGP01E1000_PSCR_FORCE_MDI_MDIX; 1413 break; 1414 case 0: 1415 default: 1416 data |= IGP01E1000_PSCR_AUTO_MDIX; 1417 break; 1418 } 1419 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CTRL, data); 1420 if (ret_val) 1421 return ret_val; 1422 1423 /* set auto-master slave resolution settings */ 1424 if (hw->mac.autoneg) { 1425 /* when autonegotiation advertisement is only 1000Mbps then we 1426 * should disable SmartSpeed and enable Auto MasterSlave 1427 * resolution as hardware default. 1428 */ 1429 if (phy->autoneg_advertised == ADVERTISE_1000_FULL) { 1430 /* Disable SmartSpeed */ 1431 ret_val = phy->ops.read_reg(hw, 1432 IGP01E1000_PHY_PORT_CONFIG, 1433 &data); 1434 if (ret_val) 1435 return ret_val; 1436 1437 data &= ~IGP01E1000_PSCFR_SMART_SPEED; 1438 ret_val = phy->ops.write_reg(hw, 1439 IGP01E1000_PHY_PORT_CONFIG, 1440 data); 1441 if (ret_val) 1442 return ret_val; 1443 1444 /* Set auto Master/Slave resolution process */ 1445 ret_val = phy->ops.read_reg(hw, PHY_1000T_CTRL, &data); 1446 if (ret_val) 1447 return ret_val; 1448 1449 data &= ~CR_1000T_MS_ENABLE; 1450 ret_val = phy->ops.write_reg(hw, PHY_1000T_CTRL, data); 1451 if (ret_val) 1452 return ret_val; 1453 } 1454 1455 ret_val = e1000_set_master_slave_mode(hw); 1456 } 1457 1458 return ret_val; 1459 } 1460 1461 /** 1462 * e1000_phy_setup_autoneg - Configure PHY for auto-negotiation 1463 * @hw: pointer to the HW structure 1464 * 1465 * Reads the MII auto-neg advertisement register and/or the 1000T control 1466 * register and if the PHY is already setup for auto-negotiation, then 1467 * return successful. Otherwise, setup advertisement and flow control to 1468 * the appropriate values for the wanted auto-negotiation. 1469 **/ 1470 s32 e1000_phy_setup_autoneg(struct e1000_hw *hw) 1471 { 1472 struct e1000_phy_info *phy = &hw->phy; 1473 s32 ret_val; 1474 u16 mii_autoneg_adv_reg; 1475 u16 mii_1000t_ctrl_reg = 0; 1476 1477 DEBUGFUNC("e1000_phy_setup_autoneg"); 1478 1479 phy->autoneg_advertised &= phy->autoneg_mask; 1480 1481 /* Read the MII Auto-Neg Advertisement Register (Address 4). */ 1482 ret_val = phy->ops.read_reg(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg); 1483 if (ret_val) 1484 return ret_val; 1485 1486 if (phy->autoneg_mask & ADVERTISE_1000_FULL) { 1487 /* Read the MII 1000Base-T Control Register (Address 9). */ 1488 ret_val = phy->ops.read_reg(hw, PHY_1000T_CTRL, 1489 &mii_1000t_ctrl_reg); 1490 if (ret_val) 1491 return ret_val; 1492 } 1493 1494 /* Need to parse both autoneg_advertised and fc and set up 1495 * the appropriate PHY registers. First we will parse for 1496 * autoneg_advertised software override. Since we can advertise 1497 * a plethora of combinations, we need to check each bit 1498 * individually. 1499 */ 1500 1501 /* First we clear all the 10/100 mb speed bits in the Auto-Neg 1502 * Advertisement Register (Address 4) and the 1000 mb speed bits in 1503 * the 1000Base-T Control Register (Address 9). 1504 */ 1505 mii_autoneg_adv_reg &= ~(NWAY_AR_100TX_FD_CAPS | 1506 NWAY_AR_100TX_HD_CAPS | 1507 NWAY_AR_10T_FD_CAPS | 1508 NWAY_AR_10T_HD_CAPS); 1509 mii_1000t_ctrl_reg &= ~(CR_1000T_HD_CAPS | CR_1000T_FD_CAPS); 1510 1511 DEBUGOUT1("autoneg_advertised %x\n", phy->autoneg_advertised); 1512 1513 /* Do we want to advertise 10 Mb Half Duplex? */ 1514 if (phy->autoneg_advertised & ADVERTISE_10_HALF) { 1515 DEBUGOUT("Advertise 10mb Half duplex\n"); 1516 mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS; 1517 } 1518 1519 /* Do we want to advertise 10 Mb Full Duplex? */ 1520 if (phy->autoneg_advertised & ADVERTISE_10_FULL) { 1521 DEBUGOUT("Advertise 10mb Full duplex\n"); 1522 mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS; 1523 } 1524 1525 /* Do we want to advertise 100 Mb Half Duplex? */ 1526 if (phy->autoneg_advertised & ADVERTISE_100_HALF) { 1527 DEBUGOUT("Advertise 100mb Half duplex\n"); 1528 mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS; 1529 } 1530 1531 /* Do we want to advertise 100 Mb Full Duplex? */ 1532 if (phy->autoneg_advertised & ADVERTISE_100_FULL) { 1533 DEBUGOUT("Advertise 100mb Full duplex\n"); 1534 mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS; 1535 } 1536 1537 /* We do not allow the Phy to advertise 1000 Mb Half Duplex */ 1538 if (phy->autoneg_advertised & ADVERTISE_1000_HALF) 1539 DEBUGOUT("Advertise 1000mb Half duplex request denied!\n"); 1540 1541 /* Do we want to advertise 1000 Mb Full Duplex? */ 1542 if (phy->autoneg_advertised & ADVERTISE_1000_FULL) { 1543 DEBUGOUT("Advertise 1000mb Full duplex\n"); 1544 mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS; 1545 } 1546 1547 /* Check for a software override of the flow control settings, and 1548 * setup the PHY advertisement registers accordingly. If 1549 * auto-negotiation is enabled, then software will have to set the 1550 * "PAUSE" bits to the correct value in the Auto-Negotiation 1551 * Advertisement Register (PHY_AUTONEG_ADV) and re-start auto- 1552 * negotiation. 1553 * 1554 * The possible values of the "fc" parameter are: 1555 * 0: Flow control is completely disabled 1556 * 1: Rx flow control is enabled (we can receive pause frames 1557 * but not send pause frames). 1558 * 2: Tx flow control is enabled (we can send pause frames 1559 * but we do not support receiving pause frames). 1560 * 3: Both Rx and Tx flow control (symmetric) are enabled. 1561 * other: No software override. The flow control configuration 1562 * in the EEPROM is used. 1563 */ 1564 switch (hw->fc.current_mode) { 1565 case e1000_fc_none: 1566 /* Flow control (Rx & Tx) is completely disabled by a 1567 * software over-ride. 1568 */ 1569 mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); 1570 break; 1571 case e1000_fc_rx_pause: 1572 /* Rx Flow control is enabled, and Tx Flow control is 1573 * disabled, by a software over-ride. 1574 * 1575 * Since there really isn't a way to advertise that we are 1576 * capable of Rx Pause ONLY, we will advertise that we 1577 * support both symmetric and asymmetric Rx PAUSE. Later 1578 * (in e1000_config_fc_after_link_up) we will disable the 1579 * hw's ability to send PAUSE frames. 1580 */ 1581 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); 1582 break; 1583 case e1000_fc_tx_pause: 1584 /* Tx Flow control is enabled, and Rx Flow control is 1585 * disabled, by a software over-ride. 1586 */ 1587 mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR; 1588 mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE; 1589 break; 1590 case e1000_fc_full: 1591 /* Flow control (both Rx and Tx) is enabled by a software 1592 * over-ride. 1593 */ 1594 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); 1595 break; 1596 default: 1597 DEBUGOUT("Flow control param set incorrectly\n"); 1598 return -E1000_ERR_CONFIG; 1599 } 1600 1601 ret_val = phy->ops.write_reg(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg); 1602 if (ret_val) 1603 return ret_val; 1604 1605 DEBUGOUT1("Auto-Neg Advertising %x\n", mii_autoneg_adv_reg); 1606 1607 if (phy->autoneg_mask & ADVERTISE_1000_FULL) 1608 ret_val = phy->ops.write_reg(hw, PHY_1000T_CTRL, 1609 mii_1000t_ctrl_reg); 1610 1611 return ret_val; 1612 } 1613 1614 /** 1615 * e1000_copper_link_autoneg - Setup/Enable autoneg for copper link 1616 * @hw: pointer to the HW structure 1617 * 1618 * Performs initial bounds checking on autoneg advertisement parameter, then 1619 * configure to advertise the full capability. Setup the PHY to autoneg 1620 * and restart the negotiation process between the link partner. If 1621 * autoneg_wait_to_complete, then wait for autoneg to complete before exiting. 1622 **/ 1623 s32 e1000_copper_link_autoneg(struct e1000_hw *hw) 1624 { 1625 struct e1000_phy_info *phy = &hw->phy; 1626 s32 ret_val; 1627 u16 phy_ctrl; 1628 1629 DEBUGFUNC("e1000_copper_link_autoneg"); 1630 1631 /* Perform some bounds checking on the autoneg advertisement 1632 * parameter. 1633 */ 1634 phy->autoneg_advertised &= phy->autoneg_mask; 1635 1636 /* If autoneg_advertised is zero, we assume it was not defaulted 1637 * by the calling code so we set to advertise full capability. 1638 */ 1639 if (!phy->autoneg_advertised) 1640 phy->autoneg_advertised = phy->autoneg_mask; 1641 1642 DEBUGOUT("Reconfiguring auto-neg advertisement params\n"); 1643 ret_val = e1000_phy_setup_autoneg(hw); 1644 if (ret_val) { 1645 DEBUGOUT("Error Setting up Auto-Negotiation\n"); 1646 return ret_val; 1647 } 1648 DEBUGOUT("Restarting Auto-Neg\n"); 1649 1650 /* Restart auto-negotiation by setting the Auto Neg Enable bit and 1651 * the Auto Neg Restart bit in the PHY control register. 1652 */ 1653 ret_val = phy->ops.read_reg(hw, PHY_CONTROL, &phy_ctrl); 1654 if (ret_val) 1655 return ret_val; 1656 1657 phy_ctrl |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG); 1658 ret_val = phy->ops.write_reg(hw, PHY_CONTROL, phy_ctrl); 1659 if (ret_val) 1660 return ret_val; 1661 1662 /* Does the user want to wait for Auto-Neg to complete here, or 1663 * check at a later time (for example, callback routine). 1664 */ 1665 if (phy->autoneg_wait_to_complete) { 1666 ret_val = e1000_wait_autoneg(hw); 1667 if (ret_val) { 1668 DEBUGOUT("Error while waiting for autoneg to complete\n"); 1669 return ret_val; 1670 } 1671 } 1672 1673 hw->mac.get_link_status = TRUE; 1674 1675 return ret_val; 1676 } 1677 1678 /** 1679 * e1000_setup_copper_link_generic - Configure copper link settings 1680 * @hw: pointer to the HW structure 1681 * 1682 * Calls the appropriate function to configure the link for auto-neg or forced 1683 * speed and duplex. Then we check for link, once link is established calls 1684 * to configure collision distance and flow control are called. If link is 1685 * not established, we return -E1000_ERR_PHY (-2). 1686 **/ 1687 s32 e1000_setup_copper_link_generic(struct e1000_hw *hw) 1688 { 1689 s32 ret_val; 1690 bool link; 1691 1692 DEBUGFUNC("e1000_setup_copper_link_generic"); 1693 1694 if (hw->mac.autoneg) { 1695 /* Setup autoneg and flow control advertisement and perform 1696 * autonegotiation. 1697 */ 1698 ret_val = e1000_copper_link_autoneg(hw); 1699 if (ret_val) 1700 return ret_val; 1701 } else { 1702 /* PHY will be set to 10H, 10F, 100H or 100F 1703 * depending on user settings. 1704 */ 1705 DEBUGOUT("Forcing Speed and Duplex\n"); 1706 ret_val = hw->phy.ops.force_speed_duplex(hw); 1707 if (ret_val) { 1708 DEBUGOUT("Error Forcing Speed and Duplex\n"); 1709 return ret_val; 1710 } 1711 } 1712 1713 /* Check link status. Wait up to 100 microseconds for link to become 1714 * valid. 1715 */ 1716 ret_val = e1000_phy_has_link_generic(hw, COPPER_LINK_UP_LIMIT, 10, 1717 &link); 1718 if (ret_val) 1719 return ret_val; 1720 1721 if (link) { 1722 DEBUGOUT("Valid link established!!!\n"); 1723 hw->mac.ops.config_collision_dist(hw); 1724 ret_val = e1000_config_fc_after_link_up_generic(hw); 1725 } else { 1726 DEBUGOUT("Unable to establish link!!!\n"); 1727 } 1728 1729 return ret_val; 1730 } 1731 1732 /** 1733 * e1000_phy_force_speed_duplex_igp - Force speed/duplex for igp PHY 1734 * @hw: pointer to the HW structure 1735 * 1736 * Calls the PHY setup function to force speed and duplex. Clears the 1737 * auto-crossover to force MDI manually. Waits for link and returns 1738 * successful if link up is successful, else -E1000_ERR_PHY (-2). 1739 **/ 1740 s32 e1000_phy_force_speed_duplex_igp(struct e1000_hw *hw) 1741 { 1742 struct e1000_phy_info *phy = &hw->phy; 1743 s32 ret_val; 1744 u16 phy_data; 1745 bool link; 1746 1747 DEBUGFUNC("e1000_phy_force_speed_duplex_igp"); 1748 1749 ret_val = phy->ops.read_reg(hw, PHY_CONTROL, &phy_data); 1750 if (ret_val) 1751 return ret_val; 1752 1753 e1000_phy_force_speed_duplex_setup(hw, &phy_data); 1754 1755 ret_val = phy->ops.write_reg(hw, PHY_CONTROL, phy_data); 1756 if (ret_val) 1757 return ret_val; 1758 1759 /* Clear Auto-Crossover to force MDI manually. IGP requires MDI 1760 * forced whenever speed and duplex are forced. 1761 */ 1762 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data); 1763 if (ret_val) 1764 return ret_val; 1765 1766 phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX; 1767 phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX; 1768 1769 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data); 1770 if (ret_val) 1771 return ret_val; 1772 1773 DEBUGOUT1("IGP PSCR: %X\n", phy_data); 1774 1775 usec_delay(1); 1776 1777 if (phy->autoneg_wait_to_complete) { 1778 DEBUGOUT("Waiting for forced speed/duplex link on IGP phy.\n"); 1779 1780 ret_val = e1000_phy_has_link_generic(hw, PHY_FORCE_LIMIT, 1781 100000, &link); 1782 if (ret_val) 1783 return ret_val; 1784 1785 if (!link) 1786 DEBUGOUT("Link taking longer than expected.\n"); 1787 1788 /* Try once more */ 1789 ret_val = e1000_phy_has_link_generic(hw, PHY_FORCE_LIMIT, 1790 100000, &link); 1791 } 1792 1793 return ret_val; 1794 } 1795 1796 /** 1797 * e1000_phy_force_speed_duplex_m88 - Force speed/duplex for m88 PHY 1798 * @hw: pointer to the HW structure 1799 * 1800 * Calls the PHY setup function to force speed and duplex. Clears the 1801 * auto-crossover to force MDI manually. Resets the PHY to commit the 1802 * changes. If time expires while waiting for link up, we reset the DSP. 1803 * After reset, TX_CLK and CRS on Tx must be set. Return successful upon 1804 * successful completion, else return corresponding error code. 1805 **/ 1806 s32 e1000_phy_force_speed_duplex_m88(struct e1000_hw *hw) 1807 { 1808 struct e1000_phy_info *phy = &hw->phy; 1809 s32 ret_val; 1810 u16 phy_data; 1811 bool link; 1812 1813 DEBUGFUNC("e1000_phy_force_speed_duplex_m88"); 1814 1815 /* I210 and I211 devices support Auto-Crossover in forced operation. */ 1816 if (phy->type != e1000_phy_i210) { 1817 /* Clear Auto-Crossover to force MDI manually. M88E1000 1818 * requires MDI forced whenever speed and duplex are forced. 1819 */ 1820 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL, 1821 &phy_data); 1822 if (ret_val) 1823 return ret_val; 1824 1825 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE; 1826 ret_val = phy->ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL, 1827 phy_data); 1828 if (ret_val) 1829 return ret_val; 1830 } 1831 1832 DEBUGOUT1("M88E1000 PSCR: %X\n", phy_data); 1833 1834 ret_val = phy->ops.read_reg(hw, PHY_CONTROL, &phy_data); 1835 if (ret_val) 1836 return ret_val; 1837 1838 e1000_phy_force_speed_duplex_setup(hw, &phy_data); 1839 1840 ret_val = phy->ops.write_reg(hw, PHY_CONTROL, phy_data); 1841 if (ret_val) 1842 return ret_val; 1843 1844 /* Reset the phy to commit changes. */ 1845 ret_val = hw->phy.ops.commit(hw); 1846 if (ret_val) 1847 return ret_val; 1848 1849 if (phy->autoneg_wait_to_complete) { 1850 DEBUGOUT("Waiting for forced speed/duplex link on M88 phy.\n"); 1851 1852 ret_val = e1000_phy_has_link_generic(hw, PHY_FORCE_LIMIT, 1853 100000, &link); 1854 if (ret_val) 1855 return ret_val; 1856 1857 if (!link) { 1858 bool reset_dsp = TRUE; 1859 1860 switch (hw->phy.id) { 1861 case I347AT4_E_PHY_ID: 1862 case M88E1340M_E_PHY_ID: 1863 case M88E1112_E_PHY_ID: 1864 case M88E1543_E_PHY_ID: 1865 case M88E1512_E_PHY_ID: 1866 case I210_I_PHY_ID: 1867 reset_dsp = FALSE; 1868 break; 1869 default: 1870 if (hw->phy.type != e1000_phy_m88) 1871 reset_dsp = FALSE; 1872 break; 1873 } 1874 1875 if (!reset_dsp) { 1876 DEBUGOUT("Link taking longer than expected.\n"); 1877 } else { 1878 /* We didn't get link. 1879 * Reset the DSP and cross our fingers. 1880 */ 1881 ret_val = phy->ops.write_reg(hw, 1882 M88E1000_PHY_PAGE_SELECT, 1883 0x001d); 1884 if (ret_val) 1885 return ret_val; 1886 ret_val = e1000_phy_reset_dsp_generic(hw); 1887 if (ret_val) 1888 return ret_val; 1889 } 1890 } 1891 1892 /* Try once more */ 1893 ret_val = e1000_phy_has_link_generic(hw, PHY_FORCE_LIMIT, 1894 100000, &link); 1895 if (ret_val) 1896 return ret_val; 1897 } 1898 1899 if (hw->phy.type != e1000_phy_m88) 1900 return E1000_SUCCESS; 1901 1902 if (hw->phy.id == I347AT4_E_PHY_ID || 1903 hw->phy.id == M88E1340M_E_PHY_ID || 1904 hw->phy.id == M88E1112_E_PHY_ID) 1905 return E1000_SUCCESS; 1906 if (hw->phy.id == I210_I_PHY_ID) 1907 return E1000_SUCCESS; 1908 if ((hw->phy.id == M88E1543_E_PHY_ID) || 1909 (hw->phy.id == M88E1512_E_PHY_ID)) 1910 return E1000_SUCCESS; 1911 ret_val = phy->ops.read_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data); 1912 if (ret_val) 1913 return ret_val; 1914 1915 /* Resetting the phy means we need to re-force TX_CLK in the 1916 * Extended PHY Specific Control Register to 25MHz clock from 1917 * the reset value of 2.5MHz. 1918 */ 1919 phy_data |= M88E1000_EPSCR_TX_CLK_25; 1920 ret_val = phy->ops.write_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data); 1921 if (ret_val) 1922 return ret_val; 1923 1924 /* In addition, we must re-enable CRS on Tx for both half and full 1925 * duplex. 1926 */ 1927 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); 1928 if (ret_val) 1929 return ret_val; 1930 1931 phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX; 1932 ret_val = phy->ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); 1933 1934 return ret_val; 1935 } 1936 1937 /** 1938 * e1000_phy_force_speed_duplex_ife - Force PHY speed & duplex 1939 * @hw: pointer to the HW structure 1940 * 1941 * Forces the speed and duplex settings of the PHY. 1942 * This is a function pointer entry point only called by 1943 * PHY setup routines. 1944 **/ 1945 s32 e1000_phy_force_speed_duplex_ife(struct e1000_hw *hw) 1946 { 1947 struct e1000_phy_info *phy = &hw->phy; 1948 s32 ret_val; 1949 u16 data; 1950 bool link; 1951 1952 DEBUGFUNC("e1000_phy_force_speed_duplex_ife"); 1953 1954 ret_val = phy->ops.read_reg(hw, PHY_CONTROL, &data); 1955 if (ret_val) 1956 return ret_val; 1957 1958 e1000_phy_force_speed_duplex_setup(hw, &data); 1959 1960 ret_val = phy->ops.write_reg(hw, PHY_CONTROL, data); 1961 if (ret_val) 1962 return ret_val; 1963 1964 /* Disable MDI-X support for 10/100 */ 1965 ret_val = phy->ops.read_reg(hw, IFE_PHY_MDIX_CONTROL, &data); 1966 if (ret_val) 1967 return ret_val; 1968 1969 data &= ~IFE_PMC_AUTO_MDIX; 1970 data &= ~IFE_PMC_FORCE_MDIX; 1971 1972 ret_val = phy->ops.write_reg(hw, IFE_PHY_MDIX_CONTROL, data); 1973 if (ret_val) 1974 return ret_val; 1975 1976 DEBUGOUT1("IFE PMC: %X\n", data); 1977 1978 usec_delay(1); 1979 1980 if (phy->autoneg_wait_to_complete) { 1981 DEBUGOUT("Waiting for forced speed/duplex link on IFE phy.\n"); 1982 1983 ret_val = e1000_phy_has_link_generic(hw, PHY_FORCE_LIMIT, 1984 100000, &link); 1985 if (ret_val) 1986 return ret_val; 1987 1988 if (!link) 1989 DEBUGOUT("Link taking longer than expected.\n"); 1990 1991 /* Try once more */ 1992 ret_val = e1000_phy_has_link_generic(hw, PHY_FORCE_LIMIT, 1993 100000, &link); 1994 if (ret_val) 1995 return ret_val; 1996 } 1997 1998 return E1000_SUCCESS; 1999 } 2000 2001 /** 2002 * e1000_phy_force_speed_duplex_setup - Configure forced PHY speed/duplex 2003 * @hw: pointer to the HW structure 2004 * @phy_ctrl: pointer to current value of PHY_CONTROL 2005 * 2006 * Forces speed and duplex on the PHY by doing the following: disable flow 2007 * control, force speed/duplex on the MAC, disable auto speed detection, 2008 * disable auto-negotiation, configure duplex, configure speed, configure 2009 * the collision distance, write configuration to CTRL register. The 2010 * caller must write to the PHY_CONTROL register for these settings to 2011 * take affect. 2012 **/ 2013 void e1000_phy_force_speed_duplex_setup(struct e1000_hw *hw, u16 *phy_ctrl) 2014 { 2015 struct e1000_mac_info *mac = &hw->mac; 2016 u32 ctrl; 2017 2018 DEBUGFUNC("e1000_phy_force_speed_duplex_setup"); 2019 2020 /* Turn off flow control when forcing speed/duplex */ 2021 hw->fc.current_mode = e1000_fc_none; 2022 2023 /* Force speed/duplex on the mac */ 2024 ctrl = E1000_READ_REG(hw, E1000_CTRL); 2025 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); 2026 ctrl &= ~E1000_CTRL_SPD_SEL; 2027 2028 /* Disable Auto Speed Detection */ 2029 ctrl &= ~E1000_CTRL_ASDE; 2030 2031 /* Disable autoneg on the phy */ 2032 *phy_ctrl &= ~MII_CR_AUTO_NEG_EN; 2033 2034 /* Forcing Full or Half Duplex? */ 2035 if (mac->forced_speed_duplex & E1000_ALL_HALF_DUPLEX) { 2036 ctrl &= ~E1000_CTRL_FD; 2037 *phy_ctrl &= ~MII_CR_FULL_DUPLEX; 2038 DEBUGOUT("Half Duplex\n"); 2039 } else { 2040 ctrl |= E1000_CTRL_FD; 2041 *phy_ctrl |= MII_CR_FULL_DUPLEX; 2042 DEBUGOUT("Full Duplex\n"); 2043 } 2044 2045 /* Forcing 10mb or 100mb? */ 2046 if (mac->forced_speed_duplex & E1000_ALL_100_SPEED) { 2047 ctrl |= E1000_CTRL_SPD_100; 2048 *phy_ctrl |= MII_CR_SPEED_100; 2049 *phy_ctrl &= ~MII_CR_SPEED_1000; 2050 DEBUGOUT("Forcing 100mb\n"); 2051 } else { 2052 ctrl &= ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100); 2053 *phy_ctrl &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_100); 2054 DEBUGOUT("Forcing 10mb\n"); 2055 } 2056 2057 hw->mac.ops.config_collision_dist(hw); 2058 2059 E1000_WRITE_REG(hw, E1000_CTRL, ctrl); 2060 } 2061 2062 /** 2063 * e1000_set_d3_lplu_state_generic - Sets low power link up state for D3 2064 * @hw: pointer to the HW structure 2065 * @active: boolean used to enable/disable lplu 2066 * 2067 * Success returns 0, Failure returns 1 2068 * 2069 * The low power link up (lplu) state is set to the power management level D3 2070 * and SmartSpeed is disabled when active is TRUE, else clear lplu for D3 2071 * and enable Smartspeed. LPLU and Smartspeed are mutually exclusive. LPLU 2072 * is used during Dx states where the power conservation is most important. 2073 * During driver activity, SmartSpeed should be enabled so performance is 2074 * maintained. 2075 **/ 2076 s32 e1000_set_d3_lplu_state_generic(struct e1000_hw *hw, bool active) 2077 { 2078 struct e1000_phy_info *phy = &hw->phy; 2079 s32 ret_val; 2080 u16 data; 2081 2082 DEBUGFUNC("e1000_set_d3_lplu_state_generic"); 2083 2084 if (!hw->phy.ops.read_reg) 2085 return E1000_SUCCESS; 2086 2087 ret_val = phy->ops.read_reg(hw, IGP02E1000_PHY_POWER_MGMT, &data); 2088 if (ret_val) 2089 return ret_val; 2090 2091 if (!active) { 2092 data &= ~IGP02E1000_PM_D3_LPLU; 2093 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT, 2094 data); 2095 if (ret_val) 2096 return ret_val; 2097 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used 2098 * during Dx states where the power conservation is most 2099 * important. During driver activity we should enable 2100 * SmartSpeed, so performance is maintained. 2101 */ 2102 if (phy->smart_speed == e1000_smart_speed_on) { 2103 ret_val = phy->ops.read_reg(hw, 2104 IGP01E1000_PHY_PORT_CONFIG, 2105 &data); 2106 if (ret_val) 2107 return ret_val; 2108 2109 data |= IGP01E1000_PSCFR_SMART_SPEED; 2110 ret_val = phy->ops.write_reg(hw, 2111 IGP01E1000_PHY_PORT_CONFIG, 2112 data); 2113 if (ret_val) 2114 return ret_val; 2115 } else if (phy->smart_speed == e1000_smart_speed_off) { 2116 ret_val = phy->ops.read_reg(hw, 2117 IGP01E1000_PHY_PORT_CONFIG, 2118 &data); 2119 if (ret_val) 2120 return ret_val; 2121 2122 data &= ~IGP01E1000_PSCFR_SMART_SPEED; 2123 ret_val = phy->ops.write_reg(hw, 2124 IGP01E1000_PHY_PORT_CONFIG, 2125 data); 2126 if (ret_val) 2127 return ret_val; 2128 } 2129 } else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) || 2130 (phy->autoneg_advertised == E1000_ALL_NOT_GIG) || 2131 (phy->autoneg_advertised == E1000_ALL_10_SPEED)) { 2132 data |= IGP02E1000_PM_D3_LPLU; 2133 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT, 2134 data); 2135 if (ret_val) 2136 return ret_val; 2137 2138 /* When LPLU is enabled, we should disable SmartSpeed */ 2139 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CONFIG, 2140 &data); 2141 if (ret_val) 2142 return ret_val; 2143 2144 data &= ~IGP01E1000_PSCFR_SMART_SPEED; 2145 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CONFIG, 2146 data); 2147 } 2148 2149 return ret_val; 2150 } 2151 2152 /** 2153 * e1000_check_downshift_generic - Checks whether a downshift in speed occurred 2154 * @hw: pointer to the HW structure 2155 * 2156 * Success returns 0, Failure returns 1 2157 * 2158 * A downshift is detected by querying the PHY link health. 2159 **/ 2160 s32 e1000_check_downshift_generic(struct e1000_hw *hw) 2161 { 2162 struct e1000_phy_info *phy = &hw->phy; 2163 s32 ret_val; 2164 u16 phy_data, offset, mask; 2165 2166 DEBUGFUNC("e1000_check_downshift_generic"); 2167 2168 switch (phy->type) { 2169 case e1000_phy_i210: 2170 case e1000_phy_m88: 2171 case e1000_phy_gg82563: 2172 case e1000_phy_bm: 2173 case e1000_phy_82578: 2174 offset = M88E1000_PHY_SPEC_STATUS; 2175 mask = M88E1000_PSSR_DOWNSHIFT; 2176 break; 2177 case e1000_phy_igp: 2178 case e1000_phy_igp_2: 2179 case e1000_phy_igp_3: 2180 offset = IGP01E1000_PHY_LINK_HEALTH; 2181 mask = IGP01E1000_PLHR_SS_DOWNGRADE; 2182 break; 2183 default: 2184 /* speed downshift not supported */ 2185 phy->speed_downgraded = FALSE; 2186 return E1000_SUCCESS; 2187 } 2188 2189 ret_val = phy->ops.read_reg(hw, offset, &phy_data); 2190 2191 if (!ret_val) 2192 phy->speed_downgraded = !!(phy_data & mask); 2193 2194 return ret_val; 2195 } 2196 2197 /** 2198 * e1000_check_polarity_m88 - Checks the polarity. 2199 * @hw: pointer to the HW structure 2200 * 2201 * Success returns 0, Failure returns -E1000_ERR_PHY (-2) 2202 * 2203 * Polarity is determined based on the PHY specific status register. 2204 **/ 2205 s32 e1000_check_polarity_m88(struct e1000_hw *hw) 2206 { 2207 struct e1000_phy_info *phy = &hw->phy; 2208 s32 ret_val; 2209 u16 data; 2210 2211 DEBUGFUNC("e1000_check_polarity_m88"); 2212 2213 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_STATUS, &data); 2214 2215 if (!ret_val) 2216 phy->cable_polarity = ((data & M88E1000_PSSR_REV_POLARITY) 2217 ? e1000_rev_polarity_reversed 2218 : e1000_rev_polarity_normal); 2219 2220 return ret_val; 2221 } 2222 2223 /** 2224 * e1000_check_polarity_igp - Checks the polarity. 2225 * @hw: pointer to the HW structure 2226 * 2227 * Success returns 0, Failure returns -E1000_ERR_PHY (-2) 2228 * 2229 * Polarity is determined based on the PHY port status register, and the 2230 * current speed (since there is no polarity at 100Mbps). 2231 **/ 2232 s32 e1000_check_polarity_igp(struct e1000_hw *hw) 2233 { 2234 struct e1000_phy_info *phy = &hw->phy; 2235 s32 ret_val; 2236 u16 data, offset, mask; 2237 2238 DEBUGFUNC("e1000_check_polarity_igp"); 2239 2240 /* Polarity is determined based on the speed of 2241 * our connection. 2242 */ 2243 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_STATUS, &data); 2244 if (ret_val) 2245 return ret_val; 2246 2247 if ((data & IGP01E1000_PSSR_SPEED_MASK) == 2248 IGP01E1000_PSSR_SPEED_1000MBPS) { 2249 offset = IGP01E1000_PHY_PCS_INIT_REG; 2250 mask = IGP01E1000_PHY_POLARITY_MASK; 2251 } else { 2252 /* This really only applies to 10Mbps since 2253 * there is no polarity for 100Mbps (always 0). 2254 */ 2255 offset = IGP01E1000_PHY_PORT_STATUS; 2256 mask = IGP01E1000_PSSR_POLARITY_REVERSED; 2257 } 2258 2259 ret_val = phy->ops.read_reg(hw, offset, &data); 2260 2261 if (!ret_val) 2262 phy->cable_polarity = ((data & mask) 2263 ? e1000_rev_polarity_reversed 2264 : e1000_rev_polarity_normal); 2265 2266 return ret_val; 2267 } 2268 2269 /** 2270 * e1000_check_polarity_ife - Check cable polarity for IFE PHY 2271 * @hw: pointer to the HW structure 2272 * 2273 * Polarity is determined on the polarity reversal feature being enabled. 2274 **/ 2275 s32 e1000_check_polarity_ife(struct e1000_hw *hw) 2276 { 2277 struct e1000_phy_info *phy = &hw->phy; 2278 s32 ret_val; 2279 u16 phy_data, offset, mask; 2280 2281 DEBUGFUNC("e1000_check_polarity_ife"); 2282 2283 /* Polarity is determined based on the reversal feature being enabled. 2284 */ 2285 if (phy->polarity_correction) { 2286 offset = IFE_PHY_EXTENDED_STATUS_CONTROL; 2287 mask = IFE_PESC_POLARITY_REVERSED; 2288 } else { 2289 offset = IFE_PHY_SPECIAL_CONTROL; 2290 mask = IFE_PSC_FORCE_POLARITY; 2291 } 2292 2293 ret_val = phy->ops.read_reg(hw, offset, &phy_data); 2294 2295 if (!ret_val) 2296 phy->cable_polarity = ((phy_data & mask) 2297 ? e1000_rev_polarity_reversed 2298 : e1000_rev_polarity_normal); 2299 2300 return ret_val; 2301 } 2302 2303 /** 2304 * e1000_wait_autoneg - Wait for auto-neg completion 2305 * @hw: pointer to the HW structure 2306 * 2307 * Waits for auto-negotiation to complete or for the auto-negotiation time 2308 * limit to expire, which ever happens first. 2309 **/ 2310 static s32 e1000_wait_autoneg(struct e1000_hw *hw) 2311 { 2312 s32 ret_val = E1000_SUCCESS; 2313 u16 i, phy_status; 2314 2315 DEBUGFUNC("e1000_wait_autoneg"); 2316 2317 if (!hw->phy.ops.read_reg) 2318 return E1000_SUCCESS; 2319 2320 /* Break after autoneg completes or PHY_AUTO_NEG_LIMIT expires. */ 2321 for (i = PHY_AUTO_NEG_LIMIT; i > 0; i--) { 2322 ret_val = hw->phy.ops.read_reg(hw, PHY_STATUS, &phy_status); 2323 if (ret_val) 2324 break; 2325 ret_val = hw->phy.ops.read_reg(hw, PHY_STATUS, &phy_status); 2326 if (ret_val) 2327 break; 2328 if (phy_status & MII_SR_AUTONEG_COMPLETE) 2329 break; 2330 msec_delay(100); 2331 } 2332 2333 /* PHY_AUTO_NEG_TIME expiration doesn't guarantee auto-negotiation 2334 * has completed. 2335 */ 2336 return ret_val; 2337 } 2338 2339 /** 2340 * e1000_phy_has_link_generic - Polls PHY for link 2341 * @hw: pointer to the HW structure 2342 * @iterations: number of times to poll for link 2343 * @usec_interval: delay between polling attempts 2344 * @success: pointer to whether polling was successful or not 2345 * 2346 * Polls the PHY status register for link, 'iterations' number of times. 2347 **/ 2348 s32 e1000_phy_has_link_generic(struct e1000_hw *hw, u32 iterations, 2349 u32 usec_interval, bool *success) 2350 { 2351 s32 ret_val = E1000_SUCCESS; 2352 u16 i, phy_status; 2353 2354 DEBUGFUNC("e1000_phy_has_link_generic"); 2355 2356 if (!hw->phy.ops.read_reg) 2357 return E1000_SUCCESS; 2358 2359 for (i = 0; i < iterations; i++) { 2360 /* Some PHYs require the PHY_STATUS register to be read 2361 * twice due to the link bit being sticky. No harm doing 2362 * it across the board. 2363 */ 2364 ret_val = hw->phy.ops.read_reg(hw, PHY_STATUS, &phy_status); 2365 if (ret_val) { 2366 /* If the first read fails, another entity may have 2367 * ownership of the resources, wait and try again to 2368 * see if they have relinquished the resources yet. 2369 */ 2370 if (usec_interval >= 1000) 2371 msec_delay(usec_interval/1000); 2372 else 2373 usec_delay(usec_interval); 2374 } 2375 ret_val = hw->phy.ops.read_reg(hw, PHY_STATUS, &phy_status); 2376 if (ret_val) 2377 break; 2378 if (phy_status & MII_SR_LINK_STATUS) 2379 break; 2380 if (usec_interval >= 1000) 2381 msec_delay(usec_interval/1000); 2382 else 2383 usec_delay(usec_interval); 2384 } 2385 2386 *success = (i < iterations); 2387 2388 return ret_val; 2389 } 2390 2391 /** 2392 * e1000_get_cable_length_m88 - Determine cable length for m88 PHY 2393 * @hw: pointer to the HW structure 2394 * 2395 * Reads the PHY specific status register to retrieve the cable length 2396 * information. The cable length is determined by averaging the minimum and 2397 * maximum values to get the "average" cable length. The m88 PHY has four 2398 * possible cable length values, which are: 2399 * Register Value Cable Length 2400 * 0 < 50 meters 2401 * 1 50 - 80 meters 2402 * 2 80 - 110 meters 2403 * 3 110 - 140 meters 2404 * 4 > 140 meters 2405 **/ 2406 s32 e1000_get_cable_length_m88(struct e1000_hw *hw) 2407 { 2408 struct e1000_phy_info *phy = &hw->phy; 2409 s32 ret_val; 2410 u16 phy_data, index; 2411 2412 DEBUGFUNC("e1000_get_cable_length_m88"); 2413 2414 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data); 2415 if (ret_val) 2416 return ret_val; 2417 2418 index = ((phy_data & M88E1000_PSSR_CABLE_LENGTH) >> 2419 M88E1000_PSSR_CABLE_LENGTH_SHIFT); 2420 2421 if (index >= M88E1000_CABLE_LENGTH_TABLE_SIZE - 1) 2422 return -E1000_ERR_PHY; 2423 2424 phy->min_cable_length = e1000_m88_cable_length_table[index]; 2425 phy->max_cable_length = e1000_m88_cable_length_table[index + 1]; 2426 2427 phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2; 2428 2429 return E1000_SUCCESS; 2430 } 2431 2432 s32 e1000_get_cable_length_m88_gen2(struct e1000_hw *hw) 2433 { 2434 struct e1000_phy_info *phy = &hw->phy; 2435 s32 ret_val; 2436 u16 phy_data, phy_data2, is_cm; 2437 u16 index, default_page; 2438 2439 DEBUGFUNC("e1000_get_cable_length_m88_gen2"); 2440 2441 switch (hw->phy.id) { 2442 case I210_I_PHY_ID: 2443 /* Get cable length from PHY Cable Diagnostics Control Reg */ 2444 ret_val = phy->ops.read_reg(hw, (0x7 << GS40G_PAGE_SHIFT) + 2445 (I347AT4_PCDL + phy->addr), 2446 &phy_data); 2447 if (ret_val) 2448 return ret_val; 2449 2450 /* Check if the unit of cable length is meters or cm */ 2451 ret_val = phy->ops.read_reg(hw, (0x7 << GS40G_PAGE_SHIFT) + 2452 I347AT4_PCDC, &phy_data2); 2453 if (ret_val) 2454 return ret_val; 2455 2456 is_cm = !(phy_data2 & I347AT4_PCDC_CABLE_LENGTH_UNIT); 2457 2458 /* Populate the phy structure with cable length in meters */ 2459 phy->min_cable_length = phy_data / (is_cm ? 100 : 1); 2460 phy->max_cable_length = phy_data / (is_cm ? 100 : 1); 2461 phy->cable_length = phy_data / (is_cm ? 100 : 1); 2462 break; 2463 case M88E1543_E_PHY_ID: 2464 case M88E1512_E_PHY_ID: 2465 case M88E1340M_E_PHY_ID: 2466 case I347AT4_E_PHY_ID: 2467 /* Remember the original page select and set it to 7 */ 2468 ret_val = phy->ops.read_reg(hw, I347AT4_PAGE_SELECT, 2469 &default_page); 2470 if (ret_val) 2471 return ret_val; 2472 2473 ret_val = phy->ops.write_reg(hw, I347AT4_PAGE_SELECT, 0x07); 2474 if (ret_val) 2475 return ret_val; 2476 2477 /* Get cable length from PHY Cable Diagnostics Control Reg */ 2478 ret_val = phy->ops.read_reg(hw, (I347AT4_PCDL + phy->addr), 2479 &phy_data); 2480 if (ret_val) 2481 return ret_val; 2482 2483 /* Check if the unit of cable length is meters or cm */ 2484 ret_val = phy->ops.read_reg(hw, I347AT4_PCDC, &phy_data2); 2485 if (ret_val) 2486 return ret_val; 2487 2488 is_cm = !(phy_data2 & I347AT4_PCDC_CABLE_LENGTH_UNIT); 2489 2490 /* Populate the phy structure with cable length in meters */ 2491 phy->min_cable_length = phy_data / (is_cm ? 100 : 1); 2492 phy->max_cable_length = phy_data / (is_cm ? 100 : 1); 2493 phy->cable_length = phy_data / (is_cm ? 100 : 1); 2494 2495 /* Reset the page select to its original value */ 2496 ret_val = phy->ops.write_reg(hw, I347AT4_PAGE_SELECT, 2497 default_page); 2498 if (ret_val) 2499 return ret_val; 2500 break; 2501 2502 case M88E1112_E_PHY_ID: 2503 /* Remember the original page select and set it to 5 */ 2504 ret_val = phy->ops.read_reg(hw, I347AT4_PAGE_SELECT, 2505 &default_page); 2506 if (ret_val) 2507 return ret_val; 2508 2509 ret_val = phy->ops.write_reg(hw, I347AT4_PAGE_SELECT, 0x05); 2510 if (ret_val) 2511 return ret_val; 2512 2513 ret_val = phy->ops.read_reg(hw, M88E1112_VCT_DSP_DISTANCE, 2514 &phy_data); 2515 if (ret_val) 2516 return ret_val; 2517 2518 index = (phy_data & M88E1000_PSSR_CABLE_LENGTH) >> 2519 M88E1000_PSSR_CABLE_LENGTH_SHIFT; 2520 2521 if (index >= M88E1000_CABLE_LENGTH_TABLE_SIZE - 1) 2522 return -E1000_ERR_PHY; 2523 2524 phy->min_cable_length = e1000_m88_cable_length_table[index]; 2525 phy->max_cable_length = e1000_m88_cable_length_table[index + 1]; 2526 2527 phy->cable_length = (phy->min_cable_length + 2528 phy->max_cable_length) / 2; 2529 2530 /* Reset the page select to its original value */ 2531 ret_val = phy->ops.write_reg(hw, I347AT4_PAGE_SELECT, 2532 default_page); 2533 if (ret_val) 2534 return ret_val; 2535 2536 break; 2537 default: 2538 return -E1000_ERR_PHY; 2539 } 2540 2541 return ret_val; 2542 } 2543 2544 /** 2545 * e1000_get_cable_length_igp_2 - Determine cable length for igp2 PHY 2546 * @hw: pointer to the HW structure 2547 * 2548 * The automatic gain control (agc) normalizes the amplitude of the 2549 * received signal, adjusting for the attenuation produced by the 2550 * cable. By reading the AGC registers, which represent the 2551 * combination of coarse and fine gain value, the value can be put 2552 * into a lookup table to obtain the approximate cable length 2553 * for each channel. 2554 **/ 2555 s32 e1000_get_cable_length_igp_2(struct e1000_hw *hw) 2556 { 2557 struct e1000_phy_info *phy = &hw->phy; 2558 s32 ret_val; 2559 u16 phy_data, i, agc_value = 0; 2560 u16 cur_agc_index, max_agc_index = 0; 2561 u16 min_agc_index = IGP02E1000_CABLE_LENGTH_TABLE_SIZE - 1; 2562 static const u16 agc_reg_array[IGP02E1000_PHY_CHANNEL_NUM] = { 2563 IGP02E1000_PHY_AGC_A, 2564 IGP02E1000_PHY_AGC_B, 2565 IGP02E1000_PHY_AGC_C, 2566 IGP02E1000_PHY_AGC_D 2567 }; 2568 2569 DEBUGFUNC("e1000_get_cable_length_igp_2"); 2570 2571 /* Read the AGC registers for all channels */ 2572 for (i = 0; i < IGP02E1000_PHY_CHANNEL_NUM; i++) { 2573 ret_val = phy->ops.read_reg(hw, agc_reg_array[i], &phy_data); 2574 if (ret_val) 2575 return ret_val; 2576 2577 /* Getting bits 15:9, which represent the combination of 2578 * coarse and fine gain values. The result is a number 2579 * that can be put into the lookup table to obtain the 2580 * approximate cable length. 2581 */ 2582 cur_agc_index = ((phy_data >> IGP02E1000_AGC_LENGTH_SHIFT) & 2583 IGP02E1000_AGC_LENGTH_MASK); 2584 2585 /* Array index bound check. */ 2586 if ((cur_agc_index >= IGP02E1000_CABLE_LENGTH_TABLE_SIZE) || 2587 (cur_agc_index == 0)) 2588 return -E1000_ERR_PHY; 2589 2590 /* Remove min & max AGC values from calculation. */ 2591 if (e1000_igp_2_cable_length_table[min_agc_index] > 2592 e1000_igp_2_cable_length_table[cur_agc_index]) 2593 min_agc_index = cur_agc_index; 2594 if (e1000_igp_2_cable_length_table[max_agc_index] < 2595 e1000_igp_2_cable_length_table[cur_agc_index]) 2596 max_agc_index = cur_agc_index; 2597 2598 agc_value += e1000_igp_2_cable_length_table[cur_agc_index]; 2599 } 2600 2601 agc_value -= (e1000_igp_2_cable_length_table[min_agc_index] + 2602 e1000_igp_2_cable_length_table[max_agc_index]); 2603 agc_value /= (IGP02E1000_PHY_CHANNEL_NUM - 2); 2604 2605 /* Calculate cable length with the error range of +/- 10 meters. */ 2606 phy->min_cable_length = (((agc_value - IGP02E1000_AGC_RANGE) > 0) ? 2607 (agc_value - IGP02E1000_AGC_RANGE) : 0); 2608 phy->max_cable_length = agc_value + IGP02E1000_AGC_RANGE; 2609 2610 phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2; 2611 2612 return E1000_SUCCESS; 2613 } 2614 2615 /** 2616 * e1000_get_phy_info_m88 - Retrieve PHY information 2617 * @hw: pointer to the HW structure 2618 * 2619 * Valid for only copper links. Read the PHY status register (sticky read) 2620 * to verify that link is up. Read the PHY special control register to 2621 * determine the polarity and 10base-T extended distance. Read the PHY 2622 * special status register to determine MDI/MDIx and current speed. If 2623 * speed is 1000, then determine cable length, local and remote receiver. 2624 **/ 2625 s32 e1000_get_phy_info_m88(struct e1000_hw *hw) 2626 { 2627 struct e1000_phy_info *phy = &hw->phy; 2628 s32 ret_val; 2629 u16 phy_data; 2630 bool link; 2631 2632 DEBUGFUNC("e1000_get_phy_info_m88"); 2633 2634 if (phy->media_type != e1000_media_type_copper) { 2635 DEBUGOUT("Phy info is only valid for copper media\n"); 2636 return -E1000_ERR_CONFIG; 2637 } 2638 2639 ret_val = e1000_phy_has_link_generic(hw, 1, 0, &link); 2640 if (ret_val) 2641 return ret_val; 2642 2643 if (!link) { 2644 DEBUGOUT("Phy info is only valid if link is up\n"); 2645 return -E1000_ERR_CONFIG; 2646 } 2647 2648 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); 2649 if (ret_val) 2650 return ret_val; 2651 2652 phy->polarity_correction = !!(phy_data & 2653 M88E1000_PSCR_POLARITY_REVERSAL); 2654 2655 ret_val = e1000_check_polarity_m88(hw); 2656 if (ret_val) 2657 return ret_val; 2658 2659 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data); 2660 if (ret_val) 2661 return ret_val; 2662 2663 phy->is_mdix = !!(phy_data & M88E1000_PSSR_MDIX); 2664 2665 if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) { 2666 ret_val = hw->phy.ops.get_cable_length(hw); 2667 if (ret_val) 2668 return ret_val; 2669 2670 ret_val = phy->ops.read_reg(hw, PHY_1000T_STATUS, &phy_data); 2671 if (ret_val) 2672 return ret_val; 2673 2674 phy->local_rx = (phy_data & SR_1000T_LOCAL_RX_STATUS) 2675 ? e1000_1000t_rx_status_ok 2676 : e1000_1000t_rx_status_not_ok; 2677 2678 phy->remote_rx = (phy_data & SR_1000T_REMOTE_RX_STATUS) 2679 ? e1000_1000t_rx_status_ok 2680 : e1000_1000t_rx_status_not_ok; 2681 } else { 2682 /* Set values to "undefined" */ 2683 phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED; 2684 phy->local_rx = e1000_1000t_rx_status_undefined; 2685 phy->remote_rx = e1000_1000t_rx_status_undefined; 2686 } 2687 2688 return ret_val; 2689 } 2690 2691 /** 2692 * e1000_get_phy_info_igp - Retrieve igp PHY information 2693 * @hw: pointer to the HW structure 2694 * 2695 * Read PHY status to determine if link is up. If link is up, then 2696 * set/determine 10base-T extended distance and polarity correction. Read 2697 * PHY port status to determine MDI/MDIx and speed. Based on the speed, 2698 * determine on the cable length, local and remote receiver. 2699 **/ 2700 s32 e1000_get_phy_info_igp(struct e1000_hw *hw) 2701 { 2702 struct e1000_phy_info *phy = &hw->phy; 2703 s32 ret_val; 2704 u16 data; 2705 bool link; 2706 2707 DEBUGFUNC("e1000_get_phy_info_igp"); 2708 2709 ret_val = e1000_phy_has_link_generic(hw, 1, 0, &link); 2710 if (ret_val) 2711 return ret_val; 2712 2713 if (!link) { 2714 DEBUGOUT("Phy info is only valid if link is up\n"); 2715 return -E1000_ERR_CONFIG; 2716 } 2717 2718 phy->polarity_correction = TRUE; 2719 2720 ret_val = e1000_check_polarity_igp(hw); 2721 if (ret_val) 2722 return ret_val; 2723 2724 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_STATUS, &data); 2725 if (ret_val) 2726 return ret_val; 2727 2728 phy->is_mdix = !!(data & IGP01E1000_PSSR_MDIX); 2729 2730 if ((data & IGP01E1000_PSSR_SPEED_MASK) == 2731 IGP01E1000_PSSR_SPEED_1000MBPS) { 2732 ret_val = phy->ops.get_cable_length(hw); 2733 if (ret_val) 2734 return ret_val; 2735 2736 ret_val = phy->ops.read_reg(hw, PHY_1000T_STATUS, &data); 2737 if (ret_val) 2738 return ret_val; 2739 2740 phy->local_rx = (data & SR_1000T_LOCAL_RX_STATUS) 2741 ? e1000_1000t_rx_status_ok 2742 : e1000_1000t_rx_status_not_ok; 2743 2744 phy->remote_rx = (data & SR_1000T_REMOTE_RX_STATUS) 2745 ? e1000_1000t_rx_status_ok 2746 : e1000_1000t_rx_status_not_ok; 2747 } else { 2748 phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED; 2749 phy->local_rx = e1000_1000t_rx_status_undefined; 2750 phy->remote_rx = e1000_1000t_rx_status_undefined; 2751 } 2752 2753 return ret_val; 2754 } 2755 2756 /** 2757 * e1000_get_phy_info_ife - Retrieves various IFE PHY states 2758 * @hw: pointer to the HW structure 2759 * 2760 * Populates "phy" structure with various feature states. 2761 **/ 2762 s32 e1000_get_phy_info_ife(struct e1000_hw *hw) 2763 { 2764 struct e1000_phy_info *phy = &hw->phy; 2765 s32 ret_val; 2766 u16 data; 2767 bool link; 2768 2769 DEBUGFUNC("e1000_get_phy_info_ife"); 2770 2771 ret_val = e1000_phy_has_link_generic(hw, 1, 0, &link); 2772 if (ret_val) 2773 return ret_val; 2774 2775 if (!link) { 2776 DEBUGOUT("Phy info is only valid if link is up\n"); 2777 return -E1000_ERR_CONFIG; 2778 } 2779 2780 ret_val = phy->ops.read_reg(hw, IFE_PHY_SPECIAL_CONTROL, &data); 2781 if (ret_val) 2782 return ret_val; 2783 phy->polarity_correction = !(data & IFE_PSC_AUTO_POLARITY_DISABLE); 2784 2785 if (phy->polarity_correction) { 2786 ret_val = e1000_check_polarity_ife(hw); 2787 if (ret_val) 2788 return ret_val; 2789 } else { 2790 /* Polarity is forced */ 2791 phy->cable_polarity = ((data & IFE_PSC_FORCE_POLARITY) 2792 ? e1000_rev_polarity_reversed 2793 : e1000_rev_polarity_normal); 2794 } 2795 2796 ret_val = phy->ops.read_reg(hw, IFE_PHY_MDIX_CONTROL, &data); 2797 if (ret_val) 2798 return ret_val; 2799 2800 phy->is_mdix = !!(data & IFE_PMC_MDIX_STATUS); 2801 2802 /* The following parameters are undefined for 10/100 operation. */ 2803 phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED; 2804 phy->local_rx = e1000_1000t_rx_status_undefined; 2805 phy->remote_rx = e1000_1000t_rx_status_undefined; 2806 2807 return E1000_SUCCESS; 2808 } 2809 2810 /** 2811 * e1000_phy_sw_reset_generic - PHY software reset 2812 * @hw: pointer to the HW structure 2813 * 2814 * Does a software reset of the PHY by reading the PHY control register and 2815 * setting/write the control register reset bit to the PHY. 2816 **/ 2817 s32 e1000_phy_sw_reset_generic(struct e1000_hw *hw) 2818 { 2819 s32 ret_val; 2820 u16 phy_ctrl; 2821 2822 DEBUGFUNC("e1000_phy_sw_reset_generic"); 2823 2824 if (!hw->phy.ops.read_reg) 2825 return E1000_SUCCESS; 2826 2827 ret_val = hw->phy.ops.read_reg(hw, PHY_CONTROL, &phy_ctrl); 2828 if (ret_val) 2829 return ret_val; 2830 2831 phy_ctrl |= MII_CR_RESET; 2832 ret_val = hw->phy.ops.write_reg(hw, PHY_CONTROL, phy_ctrl); 2833 if (ret_val) 2834 return ret_val; 2835 2836 usec_delay(1); 2837 2838 return ret_val; 2839 } 2840 2841 /** 2842 * e1000_phy_hw_reset_generic - PHY hardware reset 2843 * @hw: pointer to the HW structure 2844 * 2845 * Verify the reset block is not blocking us from resetting. Acquire 2846 * semaphore (if necessary) and read/set/write the device control reset 2847 * bit in the PHY. Wait the appropriate delay time for the device to 2848 * reset and release the semaphore (if necessary). 2849 **/ 2850 s32 e1000_phy_hw_reset_generic(struct e1000_hw *hw) 2851 { 2852 struct e1000_phy_info *phy = &hw->phy; 2853 s32 ret_val; 2854 u32 ctrl; 2855 2856 DEBUGFUNC("e1000_phy_hw_reset_generic"); 2857 2858 if (phy->ops.check_reset_block) { 2859 ret_val = phy->ops.check_reset_block(hw); 2860 if (ret_val) 2861 return E1000_SUCCESS; 2862 } 2863 2864 ret_val = phy->ops.acquire(hw); 2865 if (ret_val) 2866 return ret_val; 2867 2868 ctrl = E1000_READ_REG(hw, E1000_CTRL); 2869 E1000_WRITE_REG(hw, E1000_CTRL, ctrl | E1000_CTRL_PHY_RST); 2870 E1000_WRITE_FLUSH(hw); 2871 2872 usec_delay(phy->reset_delay_us); 2873 2874 E1000_WRITE_REG(hw, E1000_CTRL, ctrl); 2875 E1000_WRITE_FLUSH(hw); 2876 2877 usec_delay(150); 2878 2879 phy->ops.release(hw); 2880 2881 return phy->ops.get_cfg_done(hw); 2882 } 2883 2884 /** 2885 * e1000_get_cfg_done_generic - Generic configuration done 2886 * @hw: pointer to the HW structure 2887 * 2888 * Generic function to wait 10 milli-seconds for configuration to complete 2889 * and return success. 2890 **/ 2891 s32 e1000_get_cfg_done_generic(struct e1000_hw E1000_UNUSEDARG *hw) 2892 { 2893 DEBUGFUNC("e1000_get_cfg_done_generic"); 2894 2895 msec_delay_irq(10); 2896 2897 return E1000_SUCCESS; 2898 } 2899 2900 /** 2901 * e1000_phy_init_script_igp3 - Inits the IGP3 PHY 2902 * @hw: pointer to the HW structure 2903 * 2904 * Initializes a Intel Gigabit PHY3 when an EEPROM is not present. 2905 **/ 2906 s32 e1000_phy_init_script_igp3(struct e1000_hw *hw) 2907 { 2908 DEBUGOUT("Running IGP 3 PHY init script\n"); 2909 2910 /* PHY init IGP 3 */ 2911 /* Enable rise/fall, 10-mode work in class-A */ 2912 hw->phy.ops.write_reg(hw, 0x2F5B, 0x9018); 2913 /* Remove all caps from Replica path filter */ 2914 hw->phy.ops.write_reg(hw, 0x2F52, 0x0000); 2915 /* Bias trimming for ADC, AFE and Driver (Default) */ 2916 hw->phy.ops.write_reg(hw, 0x2FB1, 0x8B24); 2917 /* Increase Hybrid poly bias */ 2918 hw->phy.ops.write_reg(hw, 0x2FB2, 0xF8F0); 2919 /* Add 4% to Tx amplitude in Gig mode */ 2920 hw->phy.ops.write_reg(hw, 0x2010, 0x10B0); 2921 /* Disable trimming (TTT) */ 2922 hw->phy.ops.write_reg(hw, 0x2011, 0x0000); 2923 /* Poly DC correction to 94.6% + 2% for all channels */ 2924 hw->phy.ops.write_reg(hw, 0x20DD, 0x249A); 2925 /* ABS DC correction to 95.9% */ 2926 hw->phy.ops.write_reg(hw, 0x20DE, 0x00D3); 2927 /* BG temp curve trim */ 2928 hw->phy.ops.write_reg(hw, 0x28B4, 0x04CE); 2929 /* Increasing ADC OPAMP stage 1 currents to max */ 2930 hw->phy.ops.write_reg(hw, 0x2F70, 0x29E4); 2931 /* Force 1000 ( required for enabling PHY regs configuration) */ 2932 hw->phy.ops.write_reg(hw, 0x0000, 0x0140); 2933 /* Set upd_freq to 6 */ 2934 hw->phy.ops.write_reg(hw, 0x1F30, 0x1606); 2935 /* Disable NPDFE */ 2936 hw->phy.ops.write_reg(hw, 0x1F31, 0xB814); 2937 /* Disable adaptive fixed FFE (Default) */ 2938 hw->phy.ops.write_reg(hw, 0x1F35, 0x002A); 2939 /* Enable FFE hysteresis */ 2940 hw->phy.ops.write_reg(hw, 0x1F3E, 0x0067); 2941 /* Fixed FFE for short cable lengths */ 2942 hw->phy.ops.write_reg(hw, 0x1F54, 0x0065); 2943 /* Fixed FFE for medium cable lengths */ 2944 hw->phy.ops.write_reg(hw, 0x1F55, 0x002A); 2945 /* Fixed FFE for long cable lengths */ 2946 hw->phy.ops.write_reg(hw, 0x1F56, 0x002A); 2947 /* Enable Adaptive Clip Threshold */ 2948 hw->phy.ops.write_reg(hw, 0x1F72, 0x3FB0); 2949 /* AHT reset limit to 1 */ 2950 hw->phy.ops.write_reg(hw, 0x1F76, 0xC0FF); 2951 /* Set AHT master delay to 127 msec */ 2952 hw->phy.ops.write_reg(hw, 0x1F77, 0x1DEC); 2953 /* Set scan bits for AHT */ 2954 hw->phy.ops.write_reg(hw, 0x1F78, 0xF9EF); 2955 /* Set AHT Preset bits */ 2956 hw->phy.ops.write_reg(hw, 0x1F79, 0x0210); 2957 /* Change integ_factor of channel A to 3 */ 2958 hw->phy.ops.write_reg(hw, 0x1895, 0x0003); 2959 /* Change prop_factor of channels BCD to 8 */ 2960 hw->phy.ops.write_reg(hw, 0x1796, 0x0008); 2961 /* Change cg_icount + enable integbp for channels BCD */ 2962 hw->phy.ops.write_reg(hw, 0x1798, 0xD008); 2963 /* Change cg_icount + enable integbp + change prop_factor_master 2964 * to 8 for channel A 2965 */ 2966 hw->phy.ops.write_reg(hw, 0x1898, 0xD918); 2967 /* Disable AHT in Slave mode on channel A */ 2968 hw->phy.ops.write_reg(hw, 0x187A, 0x0800); 2969 /* Enable LPLU and disable AN to 1000 in non-D0a states, 2970 * Enable SPD+B2B 2971 */ 2972 hw->phy.ops.write_reg(hw, 0x0019, 0x008D); 2973 /* Enable restart AN on an1000_dis change */ 2974 hw->phy.ops.write_reg(hw, 0x001B, 0x2080); 2975 /* Enable wh_fifo read clock in 10/100 modes */ 2976 hw->phy.ops.write_reg(hw, 0x0014, 0x0045); 2977 /* Restart AN, Speed selection is 1000 */ 2978 hw->phy.ops.write_reg(hw, 0x0000, 0x1340); 2979 2980 return E1000_SUCCESS; 2981 } 2982 2983 /** 2984 * e1000_get_phy_type_from_id - Get PHY type from id 2985 * @phy_id: phy_id read from the phy 2986 * 2987 * Returns the phy type from the id. 2988 **/ 2989 enum e1000_phy_type e1000_get_phy_type_from_id(u32 phy_id) 2990 { 2991 enum e1000_phy_type phy_type = e1000_phy_unknown; 2992 2993 switch (phy_id) { 2994 case M88E1000_I_PHY_ID: 2995 case M88E1000_E_PHY_ID: 2996 case M88E1111_I_PHY_ID: 2997 case M88E1011_I_PHY_ID: 2998 case M88E1543_E_PHY_ID: 2999 case M88E1512_E_PHY_ID: 3000 case I347AT4_E_PHY_ID: 3001 case M88E1112_E_PHY_ID: 3002 case M88E1340M_E_PHY_ID: 3003 phy_type = e1000_phy_m88; 3004 break; 3005 case IGP01E1000_I_PHY_ID: /* IGP 1 & 2 share this */ 3006 phy_type = e1000_phy_igp_2; 3007 break; 3008 case GG82563_E_PHY_ID: 3009 phy_type = e1000_phy_gg82563; 3010 break; 3011 case IGP03E1000_E_PHY_ID: 3012 phy_type = e1000_phy_igp_3; 3013 break; 3014 case IFE_E_PHY_ID: 3015 case IFE_PLUS_E_PHY_ID: 3016 case IFE_C_E_PHY_ID: 3017 phy_type = e1000_phy_ife; 3018 break; 3019 case BME1000_E_PHY_ID: 3020 case BME1000_E_PHY_ID_R2: 3021 phy_type = e1000_phy_bm; 3022 break; 3023 case I82578_E_PHY_ID: 3024 phy_type = e1000_phy_82578; 3025 break; 3026 case I82577_E_PHY_ID: 3027 phy_type = e1000_phy_82577; 3028 break; 3029 case I82579_E_PHY_ID: 3030 phy_type = e1000_phy_82579; 3031 break; 3032 case I217_E_PHY_ID: 3033 phy_type = e1000_phy_i217; 3034 break; 3035 case I82580_I_PHY_ID: 3036 phy_type = e1000_phy_82580; 3037 break; 3038 case I210_I_PHY_ID: 3039 phy_type = e1000_phy_i210; 3040 break; 3041 default: 3042 phy_type = e1000_phy_unknown; 3043 break; 3044 } 3045 return phy_type; 3046 } 3047 3048 /** 3049 * e1000_determine_phy_address - Determines PHY address. 3050 * @hw: pointer to the HW structure 3051 * 3052 * This uses a trial and error method to loop through possible PHY 3053 * addresses. It tests each by reading the PHY ID registers and 3054 * checking for a match. 3055 **/ 3056 s32 e1000_determine_phy_address(struct e1000_hw *hw) 3057 { 3058 u32 phy_addr = 0; 3059 u32 i; 3060 enum e1000_phy_type phy_type = e1000_phy_unknown; 3061 3062 hw->phy.id = phy_type; 3063 3064 for (phy_addr = 0; phy_addr < E1000_MAX_PHY_ADDR; phy_addr++) { 3065 hw->phy.addr = phy_addr; 3066 i = 0; 3067 3068 do { 3069 e1000_get_phy_id(hw); 3070 phy_type = e1000_get_phy_type_from_id(hw->phy.id); 3071 3072 /* If phy_type is valid, break - we found our 3073 * PHY address 3074 */ 3075 if (phy_type != e1000_phy_unknown) 3076 return E1000_SUCCESS; 3077 3078 msec_delay(1); 3079 i++; 3080 } while (i < 10); 3081 } 3082 3083 return -E1000_ERR_PHY_TYPE; 3084 } 3085 3086 /** 3087 * e1000_get_phy_addr_for_bm_page - Retrieve PHY page address 3088 * @page: page to access 3089 * 3090 * Returns the phy address for the page requested. 3091 **/ 3092 static u32 e1000_get_phy_addr_for_bm_page(u32 page, u32 reg) 3093 { 3094 u32 phy_addr = 2; 3095 3096 if ((page >= 768) || (page == 0 && reg == 25) || (reg == 31)) 3097 phy_addr = 1; 3098 3099 return phy_addr; 3100 } 3101 3102 /** 3103 * e1000_write_phy_reg_bm - Write BM PHY register 3104 * @hw: pointer to the HW structure 3105 * @offset: register offset to write to 3106 * @data: data to write at register offset 3107 * 3108 * Acquires semaphore, if necessary, then writes the data to PHY register 3109 * at the offset. Release any acquired semaphores before exiting. 3110 **/ 3111 s32 e1000_write_phy_reg_bm(struct e1000_hw *hw, u32 offset, u16 data) 3112 { 3113 s32 ret_val; 3114 u32 page = offset >> IGP_PAGE_SHIFT; 3115 3116 DEBUGFUNC("e1000_write_phy_reg_bm"); 3117 3118 ret_val = hw->phy.ops.acquire(hw); 3119 if (ret_val) 3120 return ret_val; 3121 3122 /* Page 800 works differently than the rest so it has its own func */ 3123 if (page == BM_WUC_PAGE) { 3124 ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, &data, 3125 FALSE, FALSE); 3126 goto release; 3127 } 3128 3129 hw->phy.addr = e1000_get_phy_addr_for_bm_page(page, offset); 3130 3131 if (offset > MAX_PHY_MULTI_PAGE_REG) { 3132 u32 page_shift, page_select; 3133 3134 /* Page select is register 31 for phy address 1 and 22 for 3135 * phy address 2 and 3. Page select is shifted only for 3136 * phy address 1. 3137 */ 3138 if (hw->phy.addr == 1) { 3139 page_shift = IGP_PAGE_SHIFT; 3140 page_select = IGP01E1000_PHY_PAGE_SELECT; 3141 } else { 3142 page_shift = 0; 3143 page_select = BM_PHY_PAGE_SELECT; 3144 } 3145 3146 /* Page is shifted left, PHY expects (page x 32) */ 3147 ret_val = e1000_write_phy_reg_mdic(hw, page_select, 3148 (page << page_shift)); 3149 if (ret_val) 3150 goto release; 3151 } 3152 3153 ret_val = e1000_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset, 3154 data); 3155 3156 release: 3157 hw->phy.ops.release(hw); 3158 return ret_val; 3159 } 3160 3161 /** 3162 * e1000_read_phy_reg_bm - Read BM PHY register 3163 * @hw: pointer to the HW structure 3164 * @offset: register offset to be read 3165 * @data: pointer to the read data 3166 * 3167 * Acquires semaphore, if necessary, then reads the PHY register at offset 3168 * and storing the retrieved information in data. Release any acquired 3169 * semaphores before exiting. 3170 **/ 3171 s32 e1000_read_phy_reg_bm(struct e1000_hw *hw, u32 offset, u16 *data) 3172 { 3173 s32 ret_val; 3174 u32 page = offset >> IGP_PAGE_SHIFT; 3175 3176 DEBUGFUNC("e1000_read_phy_reg_bm"); 3177 3178 ret_val = hw->phy.ops.acquire(hw); 3179 if (ret_val) 3180 return ret_val; 3181 3182 /* Page 800 works differently than the rest so it has its own func */ 3183 if (page == BM_WUC_PAGE) { 3184 ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, data, 3185 TRUE, FALSE); 3186 goto release; 3187 } 3188 3189 hw->phy.addr = e1000_get_phy_addr_for_bm_page(page, offset); 3190 3191 if (offset > MAX_PHY_MULTI_PAGE_REG) { 3192 u32 page_shift, page_select; 3193 3194 /* Page select is register 31 for phy address 1 and 22 for 3195 * phy address 2 and 3. Page select is shifted only for 3196 * phy address 1. 3197 */ 3198 if (hw->phy.addr == 1) { 3199 page_shift = IGP_PAGE_SHIFT; 3200 page_select = IGP01E1000_PHY_PAGE_SELECT; 3201 } else { 3202 page_shift = 0; 3203 page_select = BM_PHY_PAGE_SELECT; 3204 } 3205 3206 /* Page is shifted left, PHY expects (page x 32) */ 3207 ret_val = e1000_write_phy_reg_mdic(hw, page_select, 3208 (page << page_shift)); 3209 if (ret_val) 3210 goto release; 3211 } 3212 3213 ret_val = e1000_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset, 3214 data); 3215 release: 3216 hw->phy.ops.release(hw); 3217 return ret_val; 3218 } 3219 3220 /** 3221 * e1000_read_phy_reg_bm2 - Read BM PHY register 3222 * @hw: pointer to the HW structure 3223 * @offset: register offset to be read 3224 * @data: pointer to the read data 3225 * 3226 * Acquires semaphore, if necessary, then reads the PHY register at offset 3227 * and storing the retrieved information in data. Release any acquired 3228 * semaphores before exiting. 3229 **/ 3230 s32 e1000_read_phy_reg_bm2(struct e1000_hw *hw, u32 offset, u16 *data) 3231 { 3232 s32 ret_val; 3233 u16 page = (u16)(offset >> IGP_PAGE_SHIFT); 3234 3235 DEBUGFUNC("e1000_read_phy_reg_bm2"); 3236 3237 ret_val = hw->phy.ops.acquire(hw); 3238 if (ret_val) 3239 return ret_val; 3240 3241 /* Page 800 works differently than the rest so it has its own func */ 3242 if (page == BM_WUC_PAGE) { 3243 ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, data, 3244 TRUE, FALSE); 3245 goto release; 3246 } 3247 3248 hw->phy.addr = 1; 3249 3250 if (offset > MAX_PHY_MULTI_PAGE_REG) { 3251 /* Page is shifted left, PHY expects (page x 32) */ 3252 ret_val = e1000_write_phy_reg_mdic(hw, BM_PHY_PAGE_SELECT, 3253 page); 3254 3255 if (ret_val) 3256 goto release; 3257 } 3258 3259 ret_val = e1000_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset, 3260 data); 3261 release: 3262 hw->phy.ops.release(hw); 3263 return ret_val; 3264 } 3265 3266 /** 3267 * e1000_write_phy_reg_bm2 - Write BM PHY register 3268 * @hw: pointer to the HW structure 3269 * @offset: register offset to write to 3270 * @data: data to write at register offset 3271 * 3272 * Acquires semaphore, if necessary, then writes the data to PHY register 3273 * at the offset. Release any acquired semaphores before exiting. 3274 **/ 3275 s32 e1000_write_phy_reg_bm2(struct e1000_hw *hw, u32 offset, u16 data) 3276 { 3277 s32 ret_val; 3278 u16 page = (u16)(offset >> IGP_PAGE_SHIFT); 3279 3280 DEBUGFUNC("e1000_write_phy_reg_bm2"); 3281 3282 ret_val = hw->phy.ops.acquire(hw); 3283 if (ret_val) 3284 return ret_val; 3285 3286 /* Page 800 works differently than the rest so it has its own func */ 3287 if (page == BM_WUC_PAGE) { 3288 ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, &data, 3289 FALSE, FALSE); 3290 goto release; 3291 } 3292 3293 hw->phy.addr = 1; 3294 3295 if (offset > MAX_PHY_MULTI_PAGE_REG) { 3296 /* Page is shifted left, PHY expects (page x 32) */ 3297 ret_val = e1000_write_phy_reg_mdic(hw, BM_PHY_PAGE_SELECT, 3298 page); 3299 3300 if (ret_val) 3301 goto release; 3302 } 3303 3304 ret_val = e1000_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset, 3305 data); 3306 3307 release: 3308 hw->phy.ops.release(hw); 3309 return ret_val; 3310 } 3311 3312 /** 3313 * e1000_enable_phy_wakeup_reg_access_bm - enable access to BM wakeup registers 3314 * @hw: pointer to the HW structure 3315 * @phy_reg: pointer to store original contents of BM_WUC_ENABLE_REG 3316 * 3317 * Assumes semaphore already acquired and phy_reg points to a valid memory 3318 * address to store contents of the BM_WUC_ENABLE_REG register. 3319 **/ 3320 s32 e1000_enable_phy_wakeup_reg_access_bm(struct e1000_hw *hw, u16 *phy_reg) 3321 { 3322 s32 ret_val; 3323 u16 temp; 3324 3325 DEBUGFUNC("e1000_enable_phy_wakeup_reg_access_bm"); 3326 3327 if (!phy_reg) 3328 return -E1000_ERR_PARAM; 3329 3330 /* All page select, port ctrl and wakeup registers use phy address 1 */ 3331 hw->phy.addr = 1; 3332 3333 /* Select Port Control Registers page */ 3334 ret_val = e1000_set_page_igp(hw, (BM_PORT_CTRL_PAGE << IGP_PAGE_SHIFT)); 3335 if (ret_val) { 3336 DEBUGOUT("Could not set Port Control page\n"); 3337 return ret_val; 3338 } 3339 3340 ret_val = e1000_read_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, phy_reg); 3341 if (ret_val) { 3342 DEBUGOUT2("Could not read PHY register %d.%d\n", 3343 BM_PORT_CTRL_PAGE, BM_WUC_ENABLE_REG); 3344 return ret_val; 3345 } 3346 3347 /* Enable both PHY wakeup mode and Wakeup register page writes. 3348 * Prevent a power state change by disabling ME and Host PHY wakeup. 3349 */ 3350 temp = *phy_reg; 3351 temp |= BM_WUC_ENABLE_BIT; 3352 temp &= ~(BM_WUC_ME_WU_BIT | BM_WUC_HOST_WU_BIT); 3353 3354 ret_val = e1000_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, temp); 3355 if (ret_val) { 3356 DEBUGOUT2("Could not write PHY register %d.%d\n", 3357 BM_PORT_CTRL_PAGE, BM_WUC_ENABLE_REG); 3358 return ret_val; 3359 } 3360 3361 /* Select Host Wakeup Registers page - caller now able to write 3362 * registers on the Wakeup registers page 3363 */ 3364 return e1000_set_page_igp(hw, (BM_WUC_PAGE << IGP_PAGE_SHIFT)); 3365 } 3366 3367 /** 3368 * e1000_disable_phy_wakeup_reg_access_bm - disable access to BM wakeup regs 3369 * @hw: pointer to the HW structure 3370 * @phy_reg: pointer to original contents of BM_WUC_ENABLE_REG 3371 * 3372 * Restore BM_WUC_ENABLE_REG to its original value. 3373 * 3374 * Assumes semaphore already acquired and *phy_reg is the contents of the 3375 * BM_WUC_ENABLE_REG before register(s) on BM_WUC_PAGE were accessed by 3376 * caller. 3377 **/ 3378 s32 e1000_disable_phy_wakeup_reg_access_bm(struct e1000_hw *hw, u16 *phy_reg) 3379 { 3380 s32 ret_val; 3381 3382 DEBUGFUNC("e1000_disable_phy_wakeup_reg_access_bm"); 3383 3384 if (!phy_reg) 3385 return -E1000_ERR_PARAM; 3386 3387 /* Select Port Control Registers page */ 3388 ret_val = e1000_set_page_igp(hw, (BM_PORT_CTRL_PAGE << IGP_PAGE_SHIFT)); 3389 if (ret_val) { 3390 DEBUGOUT("Could not set Port Control page\n"); 3391 return ret_val; 3392 } 3393 3394 /* Restore 769.17 to its original value */ 3395 ret_val = e1000_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, *phy_reg); 3396 if (ret_val) 3397 DEBUGOUT2("Could not restore PHY register %d.%d\n", 3398 BM_PORT_CTRL_PAGE, BM_WUC_ENABLE_REG); 3399 3400 return ret_val; 3401 } 3402 3403 /** 3404 * e1000_access_phy_wakeup_reg_bm - Read/write BM PHY wakeup register 3405 * @hw: pointer to the HW structure 3406 * @offset: register offset to be read or written 3407 * @data: pointer to the data to read or write 3408 * @read: determines if operation is read or write 3409 * @page_set: BM_WUC_PAGE already set and access enabled 3410 * 3411 * Read the PHY register at offset and store the retrieved information in 3412 * data, or write data to PHY register at offset. Note the procedure to 3413 * access the PHY wakeup registers is different than reading the other PHY 3414 * registers. It works as such: 3415 * 1) Set 769.17.2 (page 769, register 17, bit 2) = 1 3416 * 2) Set page to 800 for host (801 if we were manageability) 3417 * 3) Write the address using the address opcode (0x11) 3418 * 4) Read or write the data using the data opcode (0x12) 3419 * 5) Restore 769.17.2 to its original value 3420 * 3421 * Steps 1 and 2 are done by e1000_enable_phy_wakeup_reg_access_bm() and 3422 * step 5 is done by e1000_disable_phy_wakeup_reg_access_bm(). 3423 * 3424 * Assumes semaphore is already acquired. When page_set==TRUE, assumes 3425 * the PHY page is set to BM_WUC_PAGE (i.e. a function in the call stack 3426 * is responsible for calls to e1000_[enable|disable]_phy_wakeup_reg_bm()). 3427 **/ 3428 static s32 e1000_access_phy_wakeup_reg_bm(struct e1000_hw *hw, u32 offset, 3429 u16 *data, bool read, bool page_set) 3430 { 3431 s32 ret_val; 3432 u16 reg, page; 3433 u16 phy_reg = 0; 3434 3435 DEBUGFUNC("e1000_access_phy_wakeup_reg_bm"); 3436 reg = BM_PHY_REG_NUM(offset); 3437 page = BM_PHY_REG_PAGE(offset); 3438 3439 /* Gig must be disabled for MDIO accesses to Host Wakeup reg page */ 3440 if ((hw->mac.type == e1000_pchlan) && 3441 (!(E1000_READ_REG(hw, E1000_PHY_CTRL) & E1000_PHY_CTRL_GBE_DISABLE))) 3442 DEBUGOUT1("Attempting to access page %d while gig enabled.\n", 3443 page); 3444 3445 if (!page_set) { 3446 /* Enable access to PHY wakeup registers */ 3447 ret_val = e1000_enable_phy_wakeup_reg_access_bm(hw, &phy_reg); 3448 if (ret_val) { 3449 DEBUGOUT("Could not enable PHY wakeup reg access\n"); 3450 return ret_val; 3451 } 3452 } 3453 3454 DEBUGOUT2("Accessing PHY page %d reg 0x%x\n", page, reg); 3455 3456 /* Write the Wakeup register page offset value using opcode 0x11 */ 3457 ret_val = e1000_write_phy_reg_mdic(hw, BM_WUC_ADDRESS_OPCODE, reg); 3458 if (ret_val) { 3459 DEBUGOUT1("Could not write address opcode to page %d\n", page); 3460 return ret_val; 3461 } 3462 3463 if (read) { 3464 /* Read the Wakeup register page value using opcode 0x12 */ 3465 ret_val = e1000_read_phy_reg_mdic(hw, BM_WUC_DATA_OPCODE, 3466 data); 3467 } else { 3468 /* Write the Wakeup register page value using opcode 0x12 */ 3469 ret_val = e1000_write_phy_reg_mdic(hw, BM_WUC_DATA_OPCODE, 3470 *data); 3471 } 3472 3473 if (ret_val) { 3474 DEBUGOUT2("Could not access PHY reg %d.%d\n", page, reg); 3475 return ret_val; 3476 } 3477 3478 if (!page_set) 3479 ret_val = e1000_disable_phy_wakeup_reg_access_bm(hw, &phy_reg); 3480 3481 return ret_val; 3482 } 3483 3484 /** 3485 * e1000_power_up_phy_copper - Restore copper link in case of PHY power down 3486 * @hw: pointer to the HW structure 3487 * 3488 * In the case of a PHY power down to save power, or to turn off link during a 3489 * driver unload, or wake on lan is not enabled, restore the link to previous 3490 * settings. 3491 **/ 3492 void e1000_power_up_phy_copper(struct e1000_hw *hw) 3493 { 3494 u16 mii_reg = 0; 3495 3496 /* The PHY will retain its settings across a power down/up cycle */ 3497 hw->phy.ops.read_reg(hw, PHY_CONTROL, &mii_reg); 3498 mii_reg &= ~MII_CR_POWER_DOWN; 3499 hw->phy.ops.write_reg(hw, PHY_CONTROL, mii_reg); 3500 } 3501 3502 /** 3503 * e1000_power_down_phy_copper - Restore copper link in case of PHY power down 3504 * @hw: pointer to the HW structure 3505 * 3506 * In the case of a PHY power down to save power, or to turn off link during a 3507 * driver unload, or wake on lan is not enabled, restore the link to previous 3508 * settings. 3509 **/ 3510 void e1000_power_down_phy_copper(struct e1000_hw *hw) 3511 { 3512 u16 mii_reg = 0; 3513 3514 /* The PHY will retain its settings across a power down/up cycle */ 3515 hw->phy.ops.read_reg(hw, PHY_CONTROL, &mii_reg); 3516 mii_reg |= MII_CR_POWER_DOWN; 3517 hw->phy.ops.write_reg(hw, PHY_CONTROL, mii_reg); 3518 msec_delay(1); 3519 } 3520 3521 /** 3522 * __e1000_read_phy_reg_hv - Read HV PHY register 3523 * @hw: pointer to the HW structure 3524 * @offset: register offset to be read 3525 * @data: pointer to the read data 3526 * @locked: semaphore has already been acquired or not 3527 * 3528 * Acquires semaphore, if necessary, then reads the PHY register at offset 3529 * and stores the retrieved information in data. Release any acquired 3530 * semaphore before exiting. 3531 **/ 3532 static s32 __e1000_read_phy_reg_hv(struct e1000_hw *hw, u32 offset, u16 *data, 3533 bool locked, bool page_set) 3534 { 3535 s32 ret_val; 3536 u16 page = BM_PHY_REG_PAGE(offset); 3537 u16 reg = BM_PHY_REG_NUM(offset); 3538 u32 phy_addr = hw->phy.addr = e1000_get_phy_addr_for_hv_page(page); 3539 3540 DEBUGFUNC("__e1000_read_phy_reg_hv"); 3541 3542 if (!locked) { 3543 ret_val = hw->phy.ops.acquire(hw); 3544 if (ret_val) 3545 return ret_val; 3546 } 3547 3548 /* Page 800 works differently than the rest so it has its own func */ 3549 if (page == BM_WUC_PAGE) { 3550 ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, data, 3551 TRUE, page_set); 3552 goto out; 3553 } 3554 3555 if (page > 0 && page < HV_INTC_FC_PAGE_START) { 3556 ret_val = e1000_access_phy_debug_regs_hv(hw, offset, 3557 data, TRUE); 3558 goto out; 3559 } 3560 3561 if (!page_set) { 3562 if (page == HV_INTC_FC_PAGE_START) 3563 page = 0; 3564 3565 if (reg > MAX_PHY_MULTI_PAGE_REG) { 3566 /* Page is shifted left, PHY expects (page x 32) */ 3567 ret_val = e1000_set_page_igp(hw, 3568 (page << IGP_PAGE_SHIFT)); 3569 3570 hw->phy.addr = phy_addr; 3571 3572 if (ret_val) 3573 goto out; 3574 } 3575 } 3576 3577 DEBUGOUT3("reading PHY page %d (or 0x%x shifted) reg 0x%x\n", page, 3578 page << IGP_PAGE_SHIFT, reg); 3579 3580 ret_val = e1000_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & reg, 3581 data); 3582 out: 3583 if (!locked) 3584 hw->phy.ops.release(hw); 3585 3586 return ret_val; 3587 } 3588 3589 /** 3590 * e1000_read_phy_reg_hv - Read HV PHY register 3591 * @hw: pointer to the HW structure 3592 * @offset: register offset to be read 3593 * @data: pointer to the read data 3594 * 3595 * Acquires semaphore then reads the PHY register at offset and stores 3596 * the retrieved information in data. Release the acquired semaphore 3597 * before exiting. 3598 **/ 3599 s32 e1000_read_phy_reg_hv(struct e1000_hw *hw, u32 offset, u16 *data) 3600 { 3601 return __e1000_read_phy_reg_hv(hw, offset, data, FALSE, FALSE); 3602 } 3603 3604 /** 3605 * e1000_read_phy_reg_hv_locked - Read HV PHY register 3606 * @hw: pointer to the HW structure 3607 * @offset: register offset to be read 3608 * @data: pointer to the read data 3609 * 3610 * Reads the PHY register at offset and stores the retrieved information 3611 * in data. Assumes semaphore already acquired. 3612 **/ 3613 s32 e1000_read_phy_reg_hv_locked(struct e1000_hw *hw, u32 offset, u16 *data) 3614 { 3615 return __e1000_read_phy_reg_hv(hw, offset, data, TRUE, FALSE); 3616 } 3617 3618 /** 3619 * e1000_read_phy_reg_page_hv - Read HV PHY register 3620 * @hw: pointer to the HW structure 3621 * @offset: register offset to write to 3622 * @data: data to write at register offset 3623 * 3624 * Reads the PHY register at offset and stores the retrieved information 3625 * in data. Assumes semaphore already acquired and page already set. 3626 **/ 3627 s32 e1000_read_phy_reg_page_hv(struct e1000_hw *hw, u32 offset, u16 *data) 3628 { 3629 return __e1000_read_phy_reg_hv(hw, offset, data, TRUE, true); 3630 } 3631 3632 /** 3633 * __e1000_write_phy_reg_hv - Write HV PHY register 3634 * @hw: pointer to the HW structure 3635 * @offset: register offset to write to 3636 * @data: data to write at register offset 3637 * @locked: semaphore has already been acquired or not 3638 * 3639 * Acquires semaphore, if necessary, then writes the data to PHY register 3640 * at the offset. Release any acquired semaphores before exiting. 3641 **/ 3642 static s32 __e1000_write_phy_reg_hv(struct e1000_hw *hw, u32 offset, u16 data, 3643 bool locked, bool page_set) 3644 { 3645 s32 ret_val; 3646 u16 page = BM_PHY_REG_PAGE(offset); 3647 u16 reg = BM_PHY_REG_NUM(offset); 3648 u32 phy_addr = hw->phy.addr = e1000_get_phy_addr_for_hv_page(page); 3649 3650 DEBUGFUNC("__e1000_write_phy_reg_hv"); 3651 3652 if (!locked) { 3653 ret_val = hw->phy.ops.acquire(hw); 3654 if (ret_val) 3655 return ret_val; 3656 } 3657 3658 /* Page 800 works differently than the rest so it has its own func */ 3659 if (page == BM_WUC_PAGE) { 3660 ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, &data, 3661 FALSE, page_set); 3662 goto out; 3663 } 3664 3665 if (page > 0 && page < HV_INTC_FC_PAGE_START) { 3666 ret_val = e1000_access_phy_debug_regs_hv(hw, offset, 3667 &data, FALSE); 3668 goto out; 3669 } 3670 3671 if (!page_set) { 3672 if (page == HV_INTC_FC_PAGE_START) 3673 page = 0; 3674 3675 /* Workaround MDIO accesses being disabled after entering IEEE 3676 * Power Down (when bit 11 of the PHY Control register is set) 3677 */ 3678 if ((hw->phy.type == e1000_phy_82578) && 3679 (hw->phy.revision >= 1) && 3680 (hw->phy.addr == 2) && 3681 !(MAX_PHY_REG_ADDRESS & reg) && 3682 (data & (1 << 11))) { 3683 u16 data2 = 0x7EFF; 3684 ret_val = e1000_access_phy_debug_regs_hv(hw, 3685 (1 << 6) | 0x3, 3686 &data2, FALSE); 3687 if (ret_val) 3688 goto out; 3689 } 3690 3691 if (reg > MAX_PHY_MULTI_PAGE_REG) { 3692 /* Page is shifted left, PHY expects (page x 32) */ 3693 ret_val = e1000_set_page_igp(hw, 3694 (page << IGP_PAGE_SHIFT)); 3695 3696 hw->phy.addr = phy_addr; 3697 3698 if (ret_val) 3699 goto out; 3700 } 3701 } 3702 3703 DEBUGOUT3("writing PHY page %d (or 0x%x shifted) reg 0x%x\n", page, 3704 page << IGP_PAGE_SHIFT, reg); 3705 3706 ret_val = e1000_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & reg, 3707 data); 3708 3709 out: 3710 if (!locked) 3711 hw->phy.ops.release(hw); 3712 3713 return ret_val; 3714 } 3715 3716 /** 3717 * e1000_write_phy_reg_hv - Write HV PHY register 3718 * @hw: pointer to the HW structure 3719 * @offset: register offset to write to 3720 * @data: data to write at register offset 3721 * 3722 * Acquires semaphore then writes the data to PHY register at the offset. 3723 * Release the acquired semaphores before exiting. 3724 **/ 3725 s32 e1000_write_phy_reg_hv(struct e1000_hw *hw, u32 offset, u16 data) 3726 { 3727 return __e1000_write_phy_reg_hv(hw, offset, data, FALSE, FALSE); 3728 } 3729 3730 /** 3731 * e1000_write_phy_reg_hv_locked - Write HV PHY register 3732 * @hw: pointer to the HW structure 3733 * @offset: register offset to write to 3734 * @data: data to write at register offset 3735 * 3736 * Writes the data to PHY register at the offset. Assumes semaphore 3737 * already acquired. 3738 **/ 3739 s32 e1000_write_phy_reg_hv_locked(struct e1000_hw *hw, u32 offset, u16 data) 3740 { 3741 return __e1000_write_phy_reg_hv(hw, offset, data, TRUE, FALSE); 3742 } 3743 3744 /** 3745 * e1000_write_phy_reg_page_hv - Write HV PHY register 3746 * @hw: pointer to the HW structure 3747 * @offset: register offset to write to 3748 * @data: data to write at register offset 3749 * 3750 * Writes the data to PHY register at the offset. Assumes semaphore 3751 * already acquired and page already set. 3752 **/ 3753 s32 e1000_write_phy_reg_page_hv(struct e1000_hw *hw, u32 offset, u16 data) 3754 { 3755 return __e1000_write_phy_reg_hv(hw, offset, data, TRUE, true); 3756 } 3757 3758 /** 3759 * e1000_get_phy_addr_for_hv_page - Get PHY adrress based on page 3760 * @page: page to be accessed 3761 **/ 3762 static u32 e1000_get_phy_addr_for_hv_page(u32 page) 3763 { 3764 u32 phy_addr = 2; 3765 3766 if (page >= HV_INTC_FC_PAGE_START) 3767 phy_addr = 1; 3768 3769 return phy_addr; 3770 } 3771 3772 /** 3773 * e1000_access_phy_debug_regs_hv - Read HV PHY vendor specific high registers 3774 * @hw: pointer to the HW structure 3775 * @offset: register offset to be read or written 3776 * @data: pointer to the data to be read or written 3777 * @read: determines if operation is read or write 3778 * 3779 * Reads the PHY register at offset and stores the retreived information 3780 * in data. Assumes semaphore already acquired. Note that the procedure 3781 * to access these regs uses the address port and data port to read/write. 3782 * These accesses done with PHY address 2 and without using pages. 3783 **/ 3784 static s32 e1000_access_phy_debug_regs_hv(struct e1000_hw *hw, u32 offset, 3785 u16 *data, bool read) 3786 { 3787 s32 ret_val; 3788 u32 addr_reg; 3789 u32 data_reg; 3790 3791 DEBUGFUNC("e1000_access_phy_debug_regs_hv"); 3792 3793 /* This takes care of the difference with desktop vs mobile phy */ 3794 addr_reg = ((hw->phy.type == e1000_phy_82578) ? 3795 I82578_ADDR_REG : I82577_ADDR_REG); 3796 data_reg = addr_reg + 1; 3797 3798 /* All operations in this function are phy address 2 */ 3799 hw->phy.addr = 2; 3800 3801 /* masking with 0x3F to remove the page from offset */ 3802 ret_val = e1000_write_phy_reg_mdic(hw, addr_reg, (u16)offset & 0x3F); 3803 if (ret_val) { 3804 DEBUGOUT("Could not write the Address Offset port register\n"); 3805 return ret_val; 3806 } 3807 3808 /* Read or write the data value next */ 3809 if (read) 3810 ret_val = e1000_read_phy_reg_mdic(hw, data_reg, data); 3811 else 3812 ret_val = e1000_write_phy_reg_mdic(hw, data_reg, *data); 3813 3814 if (ret_val) 3815 DEBUGOUT("Could not access the Data port register\n"); 3816 3817 return ret_val; 3818 } 3819 3820 /** 3821 * e1000_link_stall_workaround_hv - Si workaround 3822 * @hw: pointer to the HW structure 3823 * 3824 * This function works around a Si bug where the link partner can get 3825 * a link up indication before the PHY does. If small packets are sent 3826 * by the link partner they can be placed in the packet buffer without 3827 * being properly accounted for by the PHY and will stall preventing 3828 * further packets from being received. The workaround is to clear the 3829 * packet buffer after the PHY detects link up. 3830 **/ 3831 s32 e1000_link_stall_workaround_hv(struct e1000_hw *hw) 3832 { 3833 s32 ret_val = E1000_SUCCESS; 3834 u16 data; 3835 3836 DEBUGFUNC("e1000_link_stall_workaround_hv"); 3837 3838 if (hw->phy.type != e1000_phy_82578) 3839 return E1000_SUCCESS; 3840 3841 /* Do not apply workaround if in PHY loopback bit 14 set */ 3842 hw->phy.ops.read_reg(hw, PHY_CONTROL, &data); 3843 if (data & PHY_CONTROL_LB) 3844 return E1000_SUCCESS; 3845 3846 /* check if link is up and at 1Gbps */ 3847 ret_val = hw->phy.ops.read_reg(hw, BM_CS_STATUS, &data); 3848 if (ret_val) 3849 return ret_val; 3850 3851 data &= (BM_CS_STATUS_LINK_UP | BM_CS_STATUS_RESOLVED | 3852 BM_CS_STATUS_SPEED_MASK); 3853 3854 if (data != (BM_CS_STATUS_LINK_UP | BM_CS_STATUS_RESOLVED | 3855 BM_CS_STATUS_SPEED_1000)) 3856 return E1000_SUCCESS; 3857 3858 msec_delay(200); 3859 3860 /* flush the packets in the fifo buffer */ 3861 ret_val = hw->phy.ops.write_reg(hw, HV_MUX_DATA_CTRL, 3862 (HV_MUX_DATA_CTRL_GEN_TO_MAC | 3863 HV_MUX_DATA_CTRL_FORCE_SPEED)); 3864 if (ret_val) 3865 return ret_val; 3866 3867 return hw->phy.ops.write_reg(hw, HV_MUX_DATA_CTRL, 3868 HV_MUX_DATA_CTRL_GEN_TO_MAC); 3869 } 3870 3871 /** 3872 * e1000_check_polarity_82577 - Checks the polarity. 3873 * @hw: pointer to the HW structure 3874 * 3875 * Success returns 0, Failure returns -E1000_ERR_PHY (-2) 3876 * 3877 * Polarity is determined based on the PHY specific status register. 3878 **/ 3879 s32 e1000_check_polarity_82577(struct e1000_hw *hw) 3880 { 3881 struct e1000_phy_info *phy = &hw->phy; 3882 s32 ret_val; 3883 u16 data; 3884 3885 DEBUGFUNC("e1000_check_polarity_82577"); 3886 3887 ret_val = phy->ops.read_reg(hw, I82577_PHY_STATUS_2, &data); 3888 3889 if (!ret_val) 3890 phy->cable_polarity = ((data & I82577_PHY_STATUS2_REV_POLARITY) 3891 ? e1000_rev_polarity_reversed 3892 : e1000_rev_polarity_normal); 3893 3894 return ret_val; 3895 } 3896 3897 /** 3898 * e1000_phy_force_speed_duplex_82577 - Force speed/duplex for I82577 PHY 3899 * @hw: pointer to the HW structure 3900 * 3901 * Calls the PHY setup function to force speed and duplex. 3902 **/ 3903 s32 e1000_phy_force_speed_duplex_82577(struct e1000_hw *hw) 3904 { 3905 struct e1000_phy_info *phy = &hw->phy; 3906 s32 ret_val; 3907 u16 phy_data; 3908 bool link; 3909 3910 DEBUGFUNC("e1000_phy_force_speed_duplex_82577"); 3911 3912 ret_val = phy->ops.read_reg(hw, PHY_CONTROL, &phy_data); 3913 if (ret_val) 3914 return ret_val; 3915 3916 e1000_phy_force_speed_duplex_setup(hw, &phy_data); 3917 3918 ret_val = phy->ops.write_reg(hw, PHY_CONTROL, phy_data); 3919 if (ret_val) 3920 return ret_val; 3921 3922 usec_delay(1); 3923 3924 if (phy->autoneg_wait_to_complete) { 3925 DEBUGOUT("Waiting for forced speed/duplex link on 82577 phy\n"); 3926 3927 ret_val = e1000_phy_has_link_generic(hw, PHY_FORCE_LIMIT, 3928 100000, &link); 3929 if (ret_val) 3930 return ret_val; 3931 3932 if (!link) 3933 DEBUGOUT("Link taking longer than expected.\n"); 3934 3935 /* Try once more */ 3936 ret_val = e1000_phy_has_link_generic(hw, PHY_FORCE_LIMIT, 3937 100000, &link); 3938 } 3939 3940 return ret_val; 3941 } 3942 3943 /** 3944 * e1000_get_phy_info_82577 - Retrieve I82577 PHY information 3945 * @hw: pointer to the HW structure 3946 * 3947 * Read PHY status to determine if link is up. If link is up, then 3948 * set/determine 10base-T extended distance and polarity correction. Read 3949 * PHY port status to determine MDI/MDIx and speed. Based on the speed, 3950 * determine on the cable length, local and remote receiver. 3951 **/ 3952 s32 e1000_get_phy_info_82577(struct e1000_hw *hw) 3953 { 3954 struct e1000_phy_info *phy = &hw->phy; 3955 s32 ret_val; 3956 u16 data; 3957 bool link; 3958 3959 DEBUGFUNC("e1000_get_phy_info_82577"); 3960 3961 ret_val = e1000_phy_has_link_generic(hw, 1, 0, &link); 3962 if (ret_val) 3963 return ret_val; 3964 3965 if (!link) { 3966 DEBUGOUT("Phy info is only valid if link is up\n"); 3967 return -E1000_ERR_CONFIG; 3968 } 3969 3970 phy->polarity_correction = TRUE; 3971 3972 ret_val = e1000_check_polarity_82577(hw); 3973 if (ret_val) 3974 return ret_val; 3975 3976 ret_val = phy->ops.read_reg(hw, I82577_PHY_STATUS_2, &data); 3977 if (ret_val) 3978 return ret_val; 3979 3980 phy->is_mdix = !!(data & I82577_PHY_STATUS2_MDIX); 3981 3982 if ((data & I82577_PHY_STATUS2_SPEED_MASK) == 3983 I82577_PHY_STATUS2_SPEED_1000MBPS) { 3984 ret_val = hw->phy.ops.get_cable_length(hw); 3985 if (ret_val) 3986 return ret_val; 3987 3988 ret_val = phy->ops.read_reg(hw, PHY_1000T_STATUS, &data); 3989 if (ret_val) 3990 return ret_val; 3991 3992 phy->local_rx = (data & SR_1000T_LOCAL_RX_STATUS) 3993 ? e1000_1000t_rx_status_ok 3994 : e1000_1000t_rx_status_not_ok; 3995 3996 phy->remote_rx = (data & SR_1000T_REMOTE_RX_STATUS) 3997 ? e1000_1000t_rx_status_ok 3998 : e1000_1000t_rx_status_not_ok; 3999 } else { 4000 phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED; 4001 phy->local_rx = e1000_1000t_rx_status_undefined; 4002 phy->remote_rx = e1000_1000t_rx_status_undefined; 4003 } 4004 4005 return E1000_SUCCESS; 4006 } 4007 4008 /** 4009 * e1000_get_cable_length_82577 - Determine cable length for 82577 PHY 4010 * @hw: pointer to the HW structure 4011 * 4012 * Reads the diagnostic status register and verifies result is valid before 4013 * placing it in the phy_cable_length field. 4014 **/ 4015 s32 e1000_get_cable_length_82577(struct e1000_hw *hw) 4016 { 4017 struct e1000_phy_info *phy = &hw->phy; 4018 s32 ret_val; 4019 u16 phy_data, length; 4020 4021 DEBUGFUNC("e1000_get_cable_length_82577"); 4022 4023 ret_val = phy->ops.read_reg(hw, I82577_PHY_DIAG_STATUS, &phy_data); 4024 if (ret_val) 4025 return ret_val; 4026 4027 length = ((phy_data & I82577_DSTATUS_CABLE_LENGTH) >> 4028 I82577_DSTATUS_CABLE_LENGTH_SHIFT); 4029 4030 if (length == E1000_CABLE_LENGTH_UNDEFINED) 4031 return -E1000_ERR_PHY; 4032 4033 phy->cable_length = length; 4034 4035 return E1000_SUCCESS; 4036 } 4037 4038 /** 4039 * e1000_write_phy_reg_gs40g - Write GS40G PHY register 4040 * @hw: pointer to the HW structure 4041 * @offset: register offset to write to 4042 * @data: data to write at register offset 4043 * 4044 * Acquires semaphore, if necessary, then writes the data to PHY register 4045 * at the offset. Release any acquired semaphores before exiting. 4046 **/ 4047 s32 e1000_write_phy_reg_gs40g(struct e1000_hw *hw, u32 offset, u16 data) 4048 { 4049 s32 ret_val; 4050 u16 page = offset >> GS40G_PAGE_SHIFT; 4051 4052 DEBUGFUNC("e1000_write_phy_reg_gs40g"); 4053 4054 offset = offset & GS40G_OFFSET_MASK; 4055 ret_val = hw->phy.ops.acquire(hw); 4056 if (ret_val) 4057 return ret_val; 4058 4059 ret_val = e1000_write_phy_reg_mdic(hw, GS40G_PAGE_SELECT, page); 4060 if (ret_val) 4061 goto release; 4062 ret_val = e1000_write_phy_reg_mdic(hw, offset, data); 4063 4064 release: 4065 hw->phy.ops.release(hw); 4066 return ret_val; 4067 } 4068 4069 /** 4070 * e1000_read_phy_reg_gs40g - Read GS40G PHY register 4071 * @hw: pointer to the HW structure 4072 * @offset: lower half is register offset to read to 4073 * upper half is page to use. 4074 * @data: data to read at register offset 4075 * 4076 * Acquires semaphore, if necessary, then reads the data in the PHY register 4077 * at the offset. Release any acquired semaphores before exiting. 4078 **/ 4079 s32 e1000_read_phy_reg_gs40g(struct e1000_hw *hw, u32 offset, u16 *data) 4080 { 4081 s32 ret_val; 4082 u16 page = offset >> GS40G_PAGE_SHIFT; 4083 4084 DEBUGFUNC("e1000_read_phy_reg_gs40g"); 4085 4086 offset = offset & GS40G_OFFSET_MASK; 4087 ret_val = hw->phy.ops.acquire(hw); 4088 if (ret_val) 4089 return ret_val; 4090 4091 ret_val = e1000_write_phy_reg_mdic(hw, GS40G_PAGE_SELECT, page); 4092 if (ret_val) 4093 goto release; 4094 ret_val = e1000_read_phy_reg_mdic(hw, offset, data); 4095 4096 release: 4097 hw->phy.ops.release(hw); 4098 return ret_val; 4099 } 4100 4101 /** 4102 * e1000_read_phy_reg_mphy - Read mPHY control register 4103 * @hw: pointer to the HW structure 4104 * @address: address to be read 4105 * @data: pointer to the read data 4106 * 4107 * Reads the mPHY control register in the PHY at offset and stores the 4108 * information read to data. 4109 **/ 4110 s32 e1000_read_phy_reg_mphy(struct e1000_hw *hw, u32 address, u32 *data) 4111 { 4112 u32 mphy_ctrl = 0; 4113 bool locked = FALSE; 4114 bool ready; 4115 4116 DEBUGFUNC("e1000_read_phy_reg_mphy"); 4117 4118 /* Check if mPHY is ready to read/write operations */ 4119 ready = e1000_is_mphy_ready(hw); 4120 if (!ready) 4121 return -E1000_ERR_PHY; 4122 4123 /* Check if mPHY access is disabled and enable it if so */ 4124 mphy_ctrl = E1000_READ_REG(hw, E1000_MPHY_ADDR_CTRL); 4125 if (mphy_ctrl & E1000_MPHY_DIS_ACCESS) { 4126 locked = TRUE; 4127 ready = e1000_is_mphy_ready(hw); 4128 if (!ready) 4129 return -E1000_ERR_PHY; 4130 mphy_ctrl |= E1000_MPHY_ENA_ACCESS; 4131 E1000_WRITE_REG(hw, E1000_MPHY_ADDR_CTRL, mphy_ctrl); 4132 } 4133 4134 /* Set the address that we want to read */ 4135 ready = e1000_is_mphy_ready(hw); 4136 if (!ready) 4137 return -E1000_ERR_PHY; 4138 4139 /* We mask address, because we want to use only current lane */ 4140 mphy_ctrl = (mphy_ctrl & ~E1000_MPHY_ADDRESS_MASK & 4141 ~E1000_MPHY_ADDRESS_FNC_OVERRIDE) | 4142 (address & E1000_MPHY_ADDRESS_MASK); 4143 E1000_WRITE_REG(hw, E1000_MPHY_ADDR_CTRL, mphy_ctrl); 4144 4145 /* Read data from the address */ 4146 ready = e1000_is_mphy_ready(hw); 4147 if (!ready) 4148 return -E1000_ERR_PHY; 4149 *data = E1000_READ_REG(hw, E1000_MPHY_DATA); 4150 4151 /* Disable access to mPHY if it was originally disabled */ 4152 if (locked) 4153 ready = e1000_is_mphy_ready(hw); 4154 if (!ready) 4155 return -E1000_ERR_PHY; 4156 E1000_WRITE_REG(hw, E1000_MPHY_ADDR_CTRL, 4157 E1000_MPHY_DIS_ACCESS); 4158 4159 return E1000_SUCCESS; 4160 } 4161 4162 /** 4163 * e1000_write_phy_reg_mphy - Write mPHY control register 4164 * @hw: pointer to the HW structure 4165 * @address: address to write to 4166 * @data: data to write to register at offset 4167 * @line_override: used when we want to use different line than default one 4168 * 4169 * Writes data to mPHY control register. 4170 **/ 4171 s32 e1000_write_phy_reg_mphy(struct e1000_hw *hw, u32 address, u32 data, 4172 bool line_override) 4173 { 4174 u32 mphy_ctrl = 0; 4175 bool locked = FALSE; 4176 bool ready; 4177 4178 DEBUGFUNC("e1000_write_phy_reg_mphy"); 4179 4180 /* Check if mPHY is ready to read/write operations */ 4181 ready = e1000_is_mphy_ready(hw); 4182 if (!ready) 4183 return -E1000_ERR_PHY; 4184 4185 /* Check if mPHY access is disabled and enable it if so */ 4186 mphy_ctrl = E1000_READ_REG(hw, E1000_MPHY_ADDR_CTRL); 4187 if (mphy_ctrl & E1000_MPHY_DIS_ACCESS) { 4188 locked = TRUE; 4189 ready = e1000_is_mphy_ready(hw); 4190 if (!ready) 4191 return -E1000_ERR_PHY; 4192 mphy_ctrl |= E1000_MPHY_ENA_ACCESS; 4193 E1000_WRITE_REG(hw, E1000_MPHY_ADDR_CTRL, mphy_ctrl); 4194 } 4195 4196 /* Set the address that we want to read */ 4197 ready = e1000_is_mphy_ready(hw); 4198 if (!ready) 4199 return -E1000_ERR_PHY; 4200 4201 /* We mask address, because we want to use only current lane */ 4202 if (line_override) 4203 mphy_ctrl |= E1000_MPHY_ADDRESS_FNC_OVERRIDE; 4204 else 4205 mphy_ctrl &= ~E1000_MPHY_ADDRESS_FNC_OVERRIDE; 4206 mphy_ctrl = (mphy_ctrl & ~E1000_MPHY_ADDRESS_MASK) | 4207 (address & E1000_MPHY_ADDRESS_MASK); 4208 E1000_WRITE_REG(hw, E1000_MPHY_ADDR_CTRL, mphy_ctrl); 4209 4210 /* Read data from the address */ 4211 ready = e1000_is_mphy_ready(hw); 4212 if (!ready) 4213 return -E1000_ERR_PHY; 4214 E1000_WRITE_REG(hw, E1000_MPHY_DATA, data); 4215 4216 /* Disable access to mPHY if it was originally disabled */ 4217 if (locked) 4218 ready = e1000_is_mphy_ready(hw); 4219 if (!ready) 4220 return -E1000_ERR_PHY; 4221 E1000_WRITE_REG(hw, E1000_MPHY_ADDR_CTRL, 4222 E1000_MPHY_DIS_ACCESS); 4223 4224 return E1000_SUCCESS; 4225 } 4226 4227 /** 4228 * e1000_is_mphy_ready - Check if mPHY control register is not busy 4229 * @hw: pointer to the HW structure 4230 * 4231 * Returns mPHY control register status. 4232 **/ 4233 bool e1000_is_mphy_ready(struct e1000_hw *hw) 4234 { 4235 u16 retry_count = 0; 4236 u32 mphy_ctrl = 0; 4237 bool ready = FALSE; 4238 4239 while (retry_count < 2) { 4240 mphy_ctrl = E1000_READ_REG(hw, E1000_MPHY_ADDR_CTRL); 4241 if (mphy_ctrl & E1000_MPHY_BUSY) { 4242 usec_delay(20); 4243 retry_count++; 4244 continue; 4245 } 4246 ready = TRUE; 4247 break; 4248 } 4249 4250 if (!ready) 4251 DEBUGOUT("ERROR READING mPHY control register, phy is busy.\n"); 4252 4253 return ready; 4254 } 4255