1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright(c) 2007 - 2018 Intel Corporation. */ 3 4 /* e1000_i210 5 * e1000_i211 6 */ 7 8 #include <linux/bitfield.h> 9 #include <linux/if_ether.h> 10 #include <linux/types.h> 11 #include "e1000_hw.h" 12 #include "e1000_i210.h" 13 14 static s32 igb_update_flash_i210(struct e1000_hw *hw); 15 16 /** 17 * igb_get_hw_semaphore_i210 - Acquire hardware semaphore 18 * @hw: pointer to the HW structure 19 * 20 * Acquire the HW semaphore to access the PHY or NVM 21 */ 22 static s32 igb_get_hw_semaphore_i210(struct e1000_hw *hw) 23 { 24 u32 swsm; 25 s32 timeout = hw->nvm.word_size + 1; 26 s32 i = 0; 27 28 /* Get the SW semaphore */ 29 while (i < timeout) { 30 swsm = rd32(E1000_SWSM); 31 if (!(swsm & E1000_SWSM_SMBI)) 32 break; 33 34 udelay(50); 35 i++; 36 } 37 38 if (i == timeout) { 39 /* In rare circumstances, the SW semaphore may already be held 40 * unintentionally. Clear the semaphore once before giving up. 41 */ 42 if (hw->dev_spec._82575.clear_semaphore_once) { 43 hw->dev_spec._82575.clear_semaphore_once = false; 44 igb_put_hw_semaphore(hw); 45 for (i = 0; i < timeout; i++) { 46 swsm = rd32(E1000_SWSM); 47 if (!(swsm & E1000_SWSM_SMBI)) 48 break; 49 50 udelay(50); 51 } 52 } 53 54 /* If we do not have the semaphore here, we have to give up. */ 55 if (i == timeout) { 56 hw_dbg("Driver can't access device - SMBI bit is set.\n"); 57 return -E1000_ERR_NVM; 58 } 59 } 60 61 /* Get the FW semaphore. */ 62 for (i = 0; i < timeout; i++) { 63 swsm = rd32(E1000_SWSM); 64 wr32(E1000_SWSM, swsm | E1000_SWSM_SWESMBI); 65 66 /* Semaphore acquired if bit latched */ 67 if (rd32(E1000_SWSM) & E1000_SWSM_SWESMBI) 68 break; 69 70 udelay(50); 71 } 72 73 if (i == timeout) { 74 /* Release semaphores */ 75 igb_put_hw_semaphore(hw); 76 hw_dbg("Driver can't access the NVM\n"); 77 return -E1000_ERR_NVM; 78 } 79 80 return 0; 81 } 82 83 /** 84 * igb_acquire_nvm_i210 - Request for access to EEPROM 85 * @hw: pointer to the HW structure 86 * 87 * Acquire the necessary semaphores for exclusive access to the EEPROM. 88 * Set the EEPROM access request bit and wait for EEPROM access grant bit. 89 * Return successful if access grant bit set, else clear the request for 90 * EEPROM access and return -E1000_ERR_NVM (-1). 91 **/ 92 static s32 igb_acquire_nvm_i210(struct e1000_hw *hw) 93 { 94 return igb_acquire_swfw_sync_i210(hw, E1000_SWFW_EEP_SM); 95 } 96 97 /** 98 * igb_release_nvm_i210 - Release exclusive access to EEPROM 99 * @hw: pointer to the HW structure 100 * 101 * Stop any current commands to the EEPROM and clear the EEPROM request bit, 102 * then release the semaphores acquired. 103 **/ 104 static void igb_release_nvm_i210(struct e1000_hw *hw) 105 { 106 igb_release_swfw_sync_i210(hw, E1000_SWFW_EEP_SM); 107 } 108 109 /** 110 * igb_acquire_swfw_sync_i210 - Acquire SW/FW semaphore 111 * @hw: pointer to the HW structure 112 * @mask: specifies which semaphore to acquire 113 * 114 * Acquire the SW/FW semaphore to access the PHY or NVM. The mask 115 * will also specify which port we're acquiring the lock for. 116 **/ 117 s32 igb_acquire_swfw_sync_i210(struct e1000_hw *hw, u16 mask) 118 { 119 u32 swfw_sync; 120 u32 swmask = mask; 121 u32 fwmask = mask << 16; 122 s32 ret_val = 0; 123 s32 i = 0, timeout = 200; /* FIXME: find real value to use here */ 124 125 while (i < timeout) { 126 if (igb_get_hw_semaphore_i210(hw)) { 127 ret_val = -E1000_ERR_SWFW_SYNC; 128 goto out; 129 } 130 131 swfw_sync = rd32(E1000_SW_FW_SYNC); 132 if (!(swfw_sync & (fwmask | swmask))) 133 break; 134 135 /* Firmware currently using resource (fwmask) */ 136 igb_put_hw_semaphore(hw); 137 mdelay(5); 138 i++; 139 } 140 141 if (i == timeout) { 142 hw_dbg("Driver can't access resource, SW_FW_SYNC timeout.\n"); 143 ret_val = -E1000_ERR_SWFW_SYNC; 144 goto out; 145 } 146 147 swfw_sync |= swmask; 148 wr32(E1000_SW_FW_SYNC, swfw_sync); 149 150 igb_put_hw_semaphore(hw); 151 out: 152 return ret_val; 153 } 154 155 /** 156 * igb_release_swfw_sync_i210 - Release SW/FW semaphore 157 * @hw: pointer to the HW structure 158 * @mask: specifies which semaphore to acquire 159 * 160 * Release the SW/FW semaphore used to access the PHY or NVM. The mask 161 * will also specify which port we're releasing the lock for. 162 **/ 163 void igb_release_swfw_sync_i210(struct e1000_hw *hw, u16 mask) 164 { 165 u32 swfw_sync; 166 167 while (igb_get_hw_semaphore_i210(hw)) 168 ; /* Empty */ 169 170 swfw_sync = rd32(E1000_SW_FW_SYNC); 171 swfw_sync &= ~mask; 172 wr32(E1000_SW_FW_SYNC, swfw_sync); 173 174 igb_put_hw_semaphore(hw); 175 } 176 177 /** 178 * igb_read_nvm_srrd_i210 - Reads Shadow Ram using EERD register 179 * @hw: pointer to the HW structure 180 * @offset: offset of word in the Shadow Ram to read 181 * @words: number of words to read 182 * @data: word read from the Shadow Ram 183 * 184 * Reads a 16 bit word from the Shadow Ram using the EERD register. 185 * Uses necessary synchronization semaphores. 186 **/ 187 static s32 igb_read_nvm_srrd_i210(struct e1000_hw *hw, u16 offset, u16 words, 188 u16 *data) 189 { 190 s32 status = 0; 191 u16 i, count; 192 193 /* We cannot hold synchronization semaphores for too long, 194 * because of forceful takeover procedure. However it is more efficient 195 * to read in bursts than synchronizing access for each word. 196 */ 197 for (i = 0; i < words; i += E1000_EERD_EEWR_MAX_COUNT) { 198 count = (words - i) / E1000_EERD_EEWR_MAX_COUNT > 0 ? 199 E1000_EERD_EEWR_MAX_COUNT : (words - i); 200 if (!(hw->nvm.ops.acquire(hw))) { 201 status = igb_read_nvm_eerd(hw, offset, count, 202 data + i); 203 hw->nvm.ops.release(hw); 204 } else { 205 status = E1000_ERR_SWFW_SYNC; 206 } 207 208 if (status) 209 break; 210 } 211 212 return status; 213 } 214 215 /** 216 * igb_write_nvm_srwr - Write to Shadow Ram using EEWR 217 * @hw: pointer to the HW structure 218 * @offset: offset within the Shadow Ram to be written to 219 * @words: number of words to write 220 * @data: 16 bit word(s) to be written to the Shadow Ram 221 * 222 * Writes data to Shadow Ram at offset using EEWR register. 223 * 224 * If igb_update_nvm_checksum is not called after this function , the 225 * Shadow Ram will most likely contain an invalid checksum. 226 **/ 227 static s32 igb_write_nvm_srwr(struct e1000_hw *hw, u16 offset, u16 words, 228 u16 *data) 229 { 230 struct e1000_nvm_info *nvm = &hw->nvm; 231 u32 i, k, eewr = 0; 232 u32 attempts = 100000; 233 s32 ret_val = 0; 234 235 /* A check for invalid values: offset too large, too many words, 236 * too many words for the offset, and not enough words. 237 */ 238 if ((offset >= nvm->word_size) || (words > (nvm->word_size - offset)) || 239 (words == 0)) { 240 hw_dbg("nvm parameter(s) out of bounds\n"); 241 ret_val = -E1000_ERR_NVM; 242 goto out; 243 } 244 245 for (i = 0; i < words; i++) { 246 eewr = ((offset+i) << E1000_NVM_RW_ADDR_SHIFT) | 247 (data[i] << E1000_NVM_RW_REG_DATA) | 248 E1000_NVM_RW_REG_START; 249 250 wr32(E1000_SRWR, eewr); 251 252 for (k = 0; k < attempts; k++) { 253 if (E1000_NVM_RW_REG_DONE & 254 rd32(E1000_SRWR)) { 255 ret_val = 0; 256 break; 257 } 258 udelay(5); 259 } 260 261 if (ret_val) { 262 hw_dbg("Shadow RAM write EEWR timed out\n"); 263 break; 264 } 265 } 266 267 out: 268 return ret_val; 269 } 270 271 /** 272 * igb_write_nvm_srwr_i210 - Write to Shadow RAM using EEWR 273 * @hw: pointer to the HW structure 274 * @offset: offset within the Shadow RAM to be written to 275 * @words: number of words to write 276 * @data: 16 bit word(s) to be written to the Shadow RAM 277 * 278 * Writes data to Shadow RAM at offset using EEWR register. 279 * 280 * If e1000_update_nvm_checksum is not called after this function , the 281 * data will not be committed to FLASH and also Shadow RAM will most likely 282 * contain an invalid checksum. 283 * 284 * If error code is returned, data and Shadow RAM may be inconsistent - buffer 285 * partially written. 286 **/ 287 static s32 igb_write_nvm_srwr_i210(struct e1000_hw *hw, u16 offset, u16 words, 288 u16 *data) 289 { 290 s32 status = 0; 291 u16 i, count; 292 293 /* We cannot hold synchronization semaphores for too long, 294 * because of forceful takeover procedure. However it is more efficient 295 * to write in bursts than synchronizing access for each word. 296 */ 297 for (i = 0; i < words; i += E1000_EERD_EEWR_MAX_COUNT) { 298 count = (words - i) / E1000_EERD_EEWR_MAX_COUNT > 0 ? 299 E1000_EERD_EEWR_MAX_COUNT : (words - i); 300 if (!(hw->nvm.ops.acquire(hw))) { 301 status = igb_write_nvm_srwr(hw, offset, count, 302 data + i); 303 hw->nvm.ops.release(hw); 304 } else { 305 status = E1000_ERR_SWFW_SYNC; 306 } 307 308 if (status) 309 break; 310 } 311 312 return status; 313 } 314 315 /** 316 * igb_read_invm_word_i210 - Reads OTP 317 * @hw: pointer to the HW structure 318 * @address: the word address (aka eeprom offset) to read 319 * @data: pointer to the data read 320 * 321 * Reads 16-bit words from the OTP. Return error when the word is not 322 * stored in OTP. 323 **/ 324 static s32 igb_read_invm_word_i210(struct e1000_hw *hw, u8 address, u16 *data) 325 { 326 s32 status = -E1000_ERR_INVM_VALUE_NOT_FOUND; 327 u32 invm_dword; 328 u16 i; 329 u8 record_type, word_address; 330 331 for (i = 0; i < E1000_INVM_SIZE; i++) { 332 invm_dword = rd32(E1000_INVM_DATA_REG(i)); 333 /* Get record type */ 334 record_type = INVM_DWORD_TO_RECORD_TYPE(invm_dword); 335 if (record_type == E1000_INVM_UNINITIALIZED_STRUCTURE) 336 break; 337 if (record_type == E1000_INVM_CSR_AUTOLOAD_STRUCTURE) 338 i += E1000_INVM_CSR_AUTOLOAD_DATA_SIZE_IN_DWORDS; 339 if (record_type == E1000_INVM_RSA_KEY_SHA256_STRUCTURE) 340 i += E1000_INVM_RSA_KEY_SHA256_DATA_SIZE_IN_DWORDS; 341 if (record_type == E1000_INVM_WORD_AUTOLOAD_STRUCTURE) { 342 word_address = INVM_DWORD_TO_WORD_ADDRESS(invm_dword); 343 if (word_address == address) { 344 *data = INVM_DWORD_TO_WORD_DATA(invm_dword); 345 hw_dbg("Read INVM Word 0x%02x = %x\n", 346 address, *data); 347 status = 0; 348 break; 349 } 350 } 351 } 352 if (status) 353 hw_dbg("Requested word 0x%02x not found in OTP\n", address); 354 return status; 355 } 356 357 /** 358 * igb_read_invm_i210 - Read invm wrapper function for I210/I211 359 * @hw: pointer to the HW structure 360 * @offset: offset to read from 361 * @words: number of words to read (unused) 362 * @data: pointer to the data read 363 * 364 * Wrapper function to return data formerly found in the NVM. 365 **/ 366 static s32 igb_read_invm_i210(struct e1000_hw *hw, u16 offset, 367 u16 __always_unused words, u16 *data) 368 { 369 s32 ret_val = 0; 370 371 /* Only the MAC addr is required to be present in the iNVM */ 372 switch (offset) { 373 case NVM_MAC_ADDR: 374 ret_val = igb_read_invm_word_i210(hw, (u8)offset, &data[0]); 375 ret_val |= igb_read_invm_word_i210(hw, (u8)offset+1, 376 &data[1]); 377 ret_val |= igb_read_invm_word_i210(hw, (u8)offset+2, 378 &data[2]); 379 if (ret_val) 380 hw_dbg("MAC Addr not found in iNVM\n"); 381 break; 382 case NVM_INIT_CTRL_2: 383 ret_val = igb_read_invm_word_i210(hw, (u8)offset, data); 384 if (ret_val) { 385 *data = NVM_INIT_CTRL_2_DEFAULT_I211; 386 ret_val = 0; 387 } 388 break; 389 case NVM_INIT_CTRL_4: 390 ret_val = igb_read_invm_word_i210(hw, (u8)offset, data); 391 if (ret_val) { 392 *data = NVM_INIT_CTRL_4_DEFAULT_I211; 393 ret_val = 0; 394 } 395 break; 396 case NVM_LED_1_CFG: 397 ret_val = igb_read_invm_word_i210(hw, (u8)offset, data); 398 if (ret_val) { 399 *data = NVM_LED_1_CFG_DEFAULT_I211; 400 ret_val = 0; 401 } 402 break; 403 case NVM_LED_0_2_CFG: 404 ret_val = igb_read_invm_word_i210(hw, (u8)offset, data); 405 if (ret_val) { 406 *data = NVM_LED_0_2_CFG_DEFAULT_I211; 407 ret_val = 0; 408 } 409 break; 410 case NVM_ID_LED_SETTINGS: 411 ret_val = igb_read_invm_word_i210(hw, (u8)offset, data); 412 if (ret_val) { 413 *data = ID_LED_RESERVED_FFFF; 414 ret_val = 0; 415 } 416 break; 417 case NVM_SUB_DEV_ID: 418 *data = hw->subsystem_device_id; 419 break; 420 case NVM_SUB_VEN_ID: 421 *data = hw->subsystem_vendor_id; 422 break; 423 case NVM_DEV_ID: 424 *data = hw->device_id; 425 break; 426 case NVM_VEN_ID: 427 *data = hw->vendor_id; 428 break; 429 default: 430 hw_dbg("NVM word 0x%02x is not mapped.\n", offset); 431 *data = NVM_RESERVED_WORD; 432 break; 433 } 434 return ret_val; 435 } 436 437 /** 438 * igb_read_invm_version - Reads iNVM version and image type 439 * @hw: pointer to the HW structure 440 * @invm_ver: version structure for the version read 441 * 442 * Reads iNVM version and image type. 443 **/ 444 s32 igb_read_invm_version(struct e1000_hw *hw, 445 struct e1000_fw_version *invm_ver) { 446 u32 *record = NULL; 447 u32 *next_record = NULL; 448 u32 i = 0; 449 u32 invm_dword = 0; 450 u32 invm_blocks = E1000_INVM_SIZE - (E1000_INVM_ULT_BYTES_SIZE / 451 E1000_INVM_RECORD_SIZE_IN_BYTES); 452 u32 buffer[E1000_INVM_SIZE]; 453 s32 status = -E1000_ERR_INVM_VALUE_NOT_FOUND; 454 u16 version = 0; 455 456 /* Read iNVM memory */ 457 for (i = 0; i < E1000_INVM_SIZE; i++) { 458 invm_dword = rd32(E1000_INVM_DATA_REG(i)); 459 buffer[i] = invm_dword; 460 } 461 462 /* Read version number */ 463 for (i = 1; i < invm_blocks; i++) { 464 record = &buffer[invm_blocks - i]; 465 next_record = &buffer[invm_blocks - i + 1]; 466 467 /* Check if we have first version location used */ 468 if ((i == 1) && ((*record & E1000_INVM_VER_FIELD_ONE) == 0)) { 469 version = 0; 470 status = 0; 471 break; 472 } 473 /* Check if we have second version location used */ 474 else if ((i == 1) && 475 ((*record & E1000_INVM_VER_FIELD_TWO) == 0)) { 476 version = FIELD_GET(E1000_INVM_VER_FIELD_ONE, *record); 477 status = 0; 478 break; 479 } 480 /* Check if we have odd version location 481 * used and it is the last one used 482 */ 483 else if ((((*record & E1000_INVM_VER_FIELD_ONE) == 0) && 484 ((*record & 0x3) == 0)) || (((*record & 0x3) != 0) && 485 (i != 1))) { 486 version = FIELD_GET(E1000_INVM_VER_FIELD_TWO, 487 *next_record); 488 status = 0; 489 break; 490 } 491 /* Check if we have even version location 492 * used and it is the last one used 493 */ 494 else if (((*record & E1000_INVM_VER_FIELD_TWO) == 0) && 495 ((*record & 0x3) == 0)) { 496 version = FIELD_GET(E1000_INVM_VER_FIELD_ONE, *record); 497 status = 0; 498 break; 499 } 500 } 501 502 if (!status) { 503 invm_ver->invm_major = FIELD_GET(E1000_INVM_MAJOR_MASK, 504 version); 505 invm_ver->invm_minor = version & E1000_INVM_MINOR_MASK; 506 } 507 /* Read Image Type */ 508 for (i = 1; i < invm_blocks; i++) { 509 record = &buffer[invm_blocks - i]; 510 next_record = &buffer[invm_blocks - i + 1]; 511 512 /* Check if we have image type in first location used */ 513 if ((i == 1) && ((*record & E1000_INVM_IMGTYPE_FIELD) == 0)) { 514 invm_ver->invm_img_type = 0; 515 status = 0; 516 break; 517 } 518 /* Check if we have image type in first location used */ 519 else if ((((*record & 0x3) == 0) && 520 ((*record & E1000_INVM_IMGTYPE_FIELD) == 0)) || 521 ((((*record & 0x3) != 0) && (i != 1)))) { 522 invm_ver->invm_img_type = 523 FIELD_GET(E1000_INVM_IMGTYPE_FIELD, 524 *next_record); 525 status = 0; 526 break; 527 } 528 } 529 return status; 530 } 531 532 /** 533 * igb_validate_nvm_checksum_i210 - Validate EEPROM checksum 534 * @hw: pointer to the HW structure 535 * 536 * Calculates the EEPROM checksum by reading/adding each word of the EEPROM 537 * and then verifies that the sum of the EEPROM is equal to 0xBABA. 538 **/ 539 static s32 igb_validate_nvm_checksum_i210(struct e1000_hw *hw) 540 { 541 s32 status = 0; 542 s32 (*read_op_ptr)(struct e1000_hw *, u16, u16, u16 *); 543 544 if (!(hw->nvm.ops.acquire(hw))) { 545 546 /* Replace the read function with semaphore grabbing with 547 * the one that skips this for a while. 548 * We have semaphore taken already here. 549 */ 550 read_op_ptr = hw->nvm.ops.read; 551 hw->nvm.ops.read = igb_read_nvm_eerd; 552 553 status = igb_validate_nvm_checksum(hw); 554 555 /* Revert original read operation. */ 556 hw->nvm.ops.read = read_op_ptr; 557 558 hw->nvm.ops.release(hw); 559 } else { 560 status = E1000_ERR_SWFW_SYNC; 561 } 562 563 return status; 564 } 565 566 /** 567 * igb_update_nvm_checksum_i210 - Update EEPROM checksum 568 * @hw: pointer to the HW structure 569 * 570 * Updates the EEPROM checksum by reading/adding each word of the EEPROM 571 * up to the checksum. Then calculates the EEPROM checksum and writes the 572 * value to the EEPROM. Next commit EEPROM data onto the Flash. 573 **/ 574 static s32 igb_update_nvm_checksum_i210(struct e1000_hw *hw) 575 { 576 s32 ret_val = 0; 577 u16 checksum = 0; 578 u16 i, nvm_data; 579 580 /* Read the first word from the EEPROM. If this times out or fails, do 581 * not continue or we could be in for a very long wait while every 582 * EEPROM read fails 583 */ 584 ret_val = igb_read_nvm_eerd(hw, 0, 1, &nvm_data); 585 if (ret_val) { 586 hw_dbg("EEPROM read failed\n"); 587 goto out; 588 } 589 590 if (!(hw->nvm.ops.acquire(hw))) { 591 /* Do not use hw->nvm.ops.write, hw->nvm.ops.read 592 * because we do not want to take the synchronization 593 * semaphores twice here. 594 */ 595 596 for (i = 0; i < NVM_CHECKSUM_REG; i++) { 597 ret_val = igb_read_nvm_eerd(hw, i, 1, &nvm_data); 598 if (ret_val) { 599 hw->nvm.ops.release(hw); 600 hw_dbg("NVM Read Error while updating checksum.\n"); 601 goto out; 602 } 603 checksum += nvm_data; 604 } 605 checksum = (u16) NVM_SUM - checksum; 606 ret_val = igb_write_nvm_srwr(hw, NVM_CHECKSUM_REG, 1, 607 &checksum); 608 if (ret_val) { 609 hw->nvm.ops.release(hw); 610 hw_dbg("NVM Write Error while updating checksum.\n"); 611 goto out; 612 } 613 614 hw->nvm.ops.release(hw); 615 616 ret_val = igb_update_flash_i210(hw); 617 } else { 618 ret_val = -E1000_ERR_SWFW_SYNC; 619 } 620 out: 621 return ret_val; 622 } 623 624 /** 625 * igb_pool_flash_update_done_i210 - Pool FLUDONE status. 626 * @hw: pointer to the HW structure 627 * 628 **/ 629 static s32 igb_pool_flash_update_done_i210(struct e1000_hw *hw) 630 { 631 s32 ret_val = -E1000_ERR_NVM; 632 u32 i, reg; 633 634 for (i = 0; i < E1000_FLUDONE_ATTEMPTS; i++) { 635 reg = rd32(E1000_EECD); 636 if (reg & E1000_EECD_FLUDONE_I210) { 637 ret_val = 0; 638 break; 639 } 640 udelay(5); 641 } 642 643 return ret_val; 644 } 645 646 /** 647 * igb_get_flash_presence_i210 - Check if flash device is detected. 648 * @hw: pointer to the HW structure 649 * 650 **/ 651 bool igb_get_flash_presence_i210(struct e1000_hw *hw) 652 { 653 u32 eec = 0; 654 bool ret_val = false; 655 656 eec = rd32(E1000_EECD); 657 if (eec & E1000_EECD_FLASH_DETECTED_I210) 658 ret_val = true; 659 660 return ret_val; 661 } 662 663 /** 664 * igb_update_flash_i210 - Commit EEPROM to the flash 665 * @hw: pointer to the HW structure 666 * 667 **/ 668 static s32 igb_update_flash_i210(struct e1000_hw *hw) 669 { 670 s32 ret_val = 0; 671 u32 flup; 672 673 ret_val = igb_pool_flash_update_done_i210(hw); 674 if (ret_val == -E1000_ERR_NVM) { 675 hw_dbg("Flash update time out\n"); 676 goto out; 677 } 678 679 flup = rd32(E1000_EECD) | E1000_EECD_FLUPD_I210; 680 wr32(E1000_EECD, flup); 681 682 ret_val = igb_pool_flash_update_done_i210(hw); 683 if (ret_val) 684 hw_dbg("Flash update time out\n"); 685 else 686 hw_dbg("Flash update complete\n"); 687 688 out: 689 return ret_val; 690 } 691 692 /** 693 * igb_valid_led_default_i210 - Verify a valid default LED config 694 * @hw: pointer to the HW structure 695 * @data: pointer to the NVM (EEPROM) 696 * 697 * Read the EEPROM for the current default LED configuration. If the 698 * LED configuration is not valid, set to a valid LED configuration. 699 **/ 700 s32 igb_valid_led_default_i210(struct e1000_hw *hw, u16 *data) 701 { 702 s32 ret_val; 703 704 ret_val = hw->nvm.ops.read(hw, NVM_ID_LED_SETTINGS, 1, data); 705 if (ret_val) { 706 hw_dbg("NVM Read Error\n"); 707 goto out; 708 } 709 710 if (*data == ID_LED_RESERVED_0000 || *data == ID_LED_RESERVED_FFFF) { 711 switch (hw->phy.media_type) { 712 case e1000_media_type_internal_serdes: 713 *data = ID_LED_DEFAULT_I210_SERDES; 714 break; 715 case e1000_media_type_copper: 716 default: 717 *data = ID_LED_DEFAULT_I210; 718 break; 719 } 720 } 721 out: 722 return ret_val; 723 } 724 725 /** 726 * __igb_access_xmdio_reg - Read/write XMDIO register 727 * @hw: pointer to the HW structure 728 * @address: XMDIO address to program 729 * @dev_addr: device address to program 730 * @data: pointer to value to read/write from/to the XMDIO address 731 * @read: boolean flag to indicate read or write 732 **/ 733 static s32 __igb_access_xmdio_reg(struct e1000_hw *hw, u16 address, 734 u8 dev_addr, u16 *data, bool read) 735 { 736 s32 ret_val = 0; 737 738 ret_val = hw->phy.ops.write_reg(hw, E1000_MMDAC, dev_addr); 739 if (ret_val) 740 return ret_val; 741 742 ret_val = hw->phy.ops.write_reg(hw, E1000_MMDAAD, address); 743 if (ret_val) 744 return ret_val; 745 746 ret_val = hw->phy.ops.write_reg(hw, E1000_MMDAC, E1000_MMDAC_FUNC_DATA | 747 dev_addr); 748 if (ret_val) 749 return ret_val; 750 751 if (read) 752 ret_val = hw->phy.ops.read_reg(hw, E1000_MMDAAD, data); 753 else 754 ret_val = hw->phy.ops.write_reg(hw, E1000_MMDAAD, *data); 755 if (ret_val) 756 return ret_val; 757 758 /* Recalibrate the device back to 0 */ 759 ret_val = hw->phy.ops.write_reg(hw, E1000_MMDAC, 0); 760 if (ret_val) 761 return ret_val; 762 763 return ret_val; 764 } 765 766 /** 767 * igb_read_xmdio_reg - Read XMDIO register 768 * @hw: pointer to the HW structure 769 * @addr: XMDIO address to program 770 * @dev_addr: device address to program 771 * @data: value to be read from the EMI address 772 **/ 773 s32 igb_read_xmdio_reg(struct e1000_hw *hw, u16 addr, u8 dev_addr, u16 *data) 774 { 775 return __igb_access_xmdio_reg(hw, addr, dev_addr, data, true); 776 } 777 778 /** 779 * igb_write_xmdio_reg - Write XMDIO register 780 * @hw: pointer to the HW structure 781 * @addr: XMDIO address to program 782 * @dev_addr: device address to program 783 * @data: value to be written to the XMDIO address 784 **/ 785 s32 igb_write_xmdio_reg(struct e1000_hw *hw, u16 addr, u8 dev_addr, u16 data) 786 { 787 return __igb_access_xmdio_reg(hw, addr, dev_addr, &data, false); 788 } 789 790 /** 791 * igb_init_nvm_params_i210 - Init NVM func ptrs. 792 * @hw: pointer to the HW structure 793 **/ 794 s32 igb_init_nvm_params_i210(struct e1000_hw *hw) 795 { 796 struct e1000_nvm_info *nvm = &hw->nvm; 797 798 nvm->ops.acquire = igb_acquire_nvm_i210; 799 nvm->ops.release = igb_release_nvm_i210; 800 nvm->ops.valid_led_default = igb_valid_led_default_i210; 801 802 /* NVM Function Pointers */ 803 if (igb_get_flash_presence_i210(hw)) { 804 hw->nvm.type = e1000_nvm_flash_hw; 805 nvm->ops.read = igb_read_nvm_srrd_i210; 806 nvm->ops.write = igb_write_nvm_srwr_i210; 807 nvm->ops.validate = igb_validate_nvm_checksum_i210; 808 nvm->ops.update = igb_update_nvm_checksum_i210; 809 } else { 810 hw->nvm.type = e1000_nvm_invm; 811 nvm->ops.read = igb_read_invm_i210; 812 nvm->ops.write = NULL; 813 nvm->ops.validate = NULL; 814 nvm->ops.update = NULL; 815 } 816 return 0; 817 } 818 819 /** 820 * igb_pll_workaround_i210 821 * @hw: pointer to the HW structure 822 * 823 * Works around an errata in the PLL circuit where it occasionally 824 * provides the wrong clock frequency after power up. 825 **/ 826 s32 igb_pll_workaround_i210(struct e1000_hw *hw) 827 { 828 s32 ret_val; 829 u32 wuc, mdicnfg, ctrl, ctrl_ext, reg_val; 830 u16 nvm_word, phy_word, pci_word, tmp_nvm; 831 int i; 832 833 /* Get and set needed register values */ 834 wuc = rd32(E1000_WUC); 835 mdicnfg = rd32(E1000_MDICNFG); 836 reg_val = mdicnfg & ~E1000_MDICNFG_EXT_MDIO; 837 wr32(E1000_MDICNFG, reg_val); 838 839 /* Get data from NVM, or set default */ 840 ret_val = igb_read_invm_word_i210(hw, E1000_INVM_AUTOLOAD, 841 &nvm_word); 842 if (ret_val) 843 nvm_word = E1000_INVM_DEFAULT_AL; 844 tmp_nvm = nvm_word | E1000_INVM_PLL_WO_VAL; 845 igb_write_phy_reg_82580(hw, I347AT4_PAGE_SELECT, E1000_PHY_PLL_FREQ_PAGE); 846 phy_word = E1000_PHY_PLL_UNCONF; 847 for (i = 0; i < E1000_MAX_PLL_TRIES; i++) { 848 /* check current state directly from internal PHY */ 849 igb_read_phy_reg_82580(hw, E1000_PHY_PLL_FREQ_REG, &phy_word); 850 if ((phy_word & E1000_PHY_PLL_UNCONF) 851 != E1000_PHY_PLL_UNCONF) { 852 ret_val = 0; 853 break; 854 } else { 855 ret_val = -E1000_ERR_PHY; 856 } 857 /* directly reset the internal PHY */ 858 ctrl = rd32(E1000_CTRL); 859 wr32(E1000_CTRL, ctrl|E1000_CTRL_PHY_RST); 860 861 ctrl_ext = rd32(E1000_CTRL_EXT); 862 ctrl_ext |= (E1000_CTRL_EXT_PHYPDEN | E1000_CTRL_EXT_SDLPE); 863 wr32(E1000_CTRL_EXT, ctrl_ext); 864 865 wr32(E1000_WUC, 0); 866 reg_val = (E1000_INVM_AUTOLOAD << 4) | (tmp_nvm << 16); 867 wr32(E1000_EEARBC_I210, reg_val); 868 869 igb_read_pci_cfg(hw, E1000_PCI_PMCSR, &pci_word); 870 pci_word |= E1000_PCI_PMCSR_D3; 871 igb_write_pci_cfg(hw, E1000_PCI_PMCSR, &pci_word); 872 usleep_range(1000, 2000); 873 pci_word &= ~E1000_PCI_PMCSR_D3; 874 igb_write_pci_cfg(hw, E1000_PCI_PMCSR, &pci_word); 875 reg_val = (E1000_INVM_AUTOLOAD << 4) | (nvm_word << 16); 876 wr32(E1000_EEARBC_I210, reg_val); 877 878 /* restore WUC register */ 879 wr32(E1000_WUC, wuc); 880 } 881 igb_write_phy_reg_82580(hw, I347AT4_PAGE_SELECT, 0); 882 /* restore MDICNFG setting */ 883 wr32(E1000_MDICNFG, mdicnfg); 884 return ret_val; 885 } 886 887 /** 888 * igb_get_cfg_done_i210 - Read config done bit 889 * @hw: pointer to the HW structure 890 * 891 * Read the management control register for the config done bit for 892 * completion status. NOTE: silicon which is EEPROM-less will fail trying 893 * to read the config done bit, so an error is *ONLY* logged and returns 894 * 0. If we were to return with error, EEPROM-less silicon 895 * would not be able to be reset or change link. 896 **/ 897 s32 igb_get_cfg_done_i210(struct e1000_hw *hw) 898 { 899 s32 timeout = PHY_CFG_TIMEOUT; 900 u32 mask = E1000_NVM_CFG_DONE_PORT_0; 901 902 while (timeout) { 903 if (rd32(E1000_EEMNGCTL_I210) & mask) 904 break; 905 usleep_range(1000, 2000); 906 timeout--; 907 } 908 if (!timeout) 909 hw_dbg("MNG configuration cycle has not completed.\n"); 910 911 return 0; 912 } 913