1 /************************************************************************** 2 Intel Pro 1000 for ppcboot/das-u-boot 3 Drivers are port from Intel's Linux driver e1000-4.3.15 4 and from Etherboot pro 1000 driver by mrakes at vivato dot net 5 tested on both gig copper and gig fiber boards 6 ***************************************************************************/ 7 /******************************************************************************* 8 9 10 Copyright(c) 1999 - 2002 Intel Corporation. All rights reserved. 11 12 This program is free software; you can redistribute it and/or modify it 13 under the terms of the GNU General Public License as published by the Free 14 Software Foundation; either version 2 of the License, or (at your option) 15 any later version. 16 17 This program is distributed in the hope that it will be useful, but WITHOUT 18 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 19 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 20 more details. 21 22 You should have received a copy of the GNU General Public License along with 23 this program; if not, write to the Free Software Foundation, Inc., 59 24 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 25 26 The full GNU General Public License is included in this distribution in the 27 file called LICENSE. 28 29 Contact Information: 30 Linux NICS <linux.nics@intel.com> 31 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 32 33 *******************************************************************************/ 34 /* 35 * Copyright (C) Archway Digital Solutions. 36 * 37 * written by Chrsitopher Li <cli at arcyway dot com> or <chrisl at gnuchina dot org> 38 * 2/9/2002 39 * 40 * Copyright (C) Linux Networx. 41 * Massive upgrade to work with the new intel gigabit NICs. 42 * <ebiederman at lnxi dot com> 43 */ 44 45 #include "e1000.h" 46 47 #define TOUT_LOOP 100000 48 49 #undef virt_to_bus 50 #define virt_to_bus(x) ((unsigned long)x) 51 #define bus_to_phys(devno, a) pci_mem_to_phys(devno, a) 52 #define mdelay(n) udelay((n)*1000) 53 54 #define E1000_DEFAULT_PBA 0x000a0026 55 56 /* NIC specific static variables go here */ 57 58 static char tx_pool[128 + 16]; 59 static char rx_pool[128 + 16]; 60 static char packet[2096]; 61 62 static struct e1000_tx_desc *tx_base; 63 static struct e1000_rx_desc *rx_base; 64 65 static int tx_tail; 66 static int rx_tail, rx_last; 67 68 static struct pci_device_id supported[] = { 69 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82542}, 70 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82543GC_FIBER}, 71 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82543GC_COPPER}, 72 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544EI_COPPER}, 73 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544EI_FIBER}, 74 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544GC_COPPER}, 75 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544GC_LOM}, 76 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82540EM}, 77 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82545EM_COPPER}, 78 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82545GM_COPPER}, 79 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546EB_COPPER}, 80 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82545EM_FIBER}, 81 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546EB_FIBER}, 82 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82540EM_LOM}, 83 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82541ER}, 84 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82541GI_LF}, 85 /* E1000 PCIe card */ 86 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_COPPER}, 87 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_FIBER }, 88 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_SERDES }, 89 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_QUAD_COPPER}, 90 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571PT_QUAD_COPPER}, 91 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_QUAD_FIBER}, 92 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_QUAD_COPPER_LOWPROFILE}, 93 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_SERDES_DUAL}, 94 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_SERDES_QUAD}, 95 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI_COPPER}, 96 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI_FIBER}, 97 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI_SERDES}, 98 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI}, 99 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82573E}, 100 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82573E_IAMT}, 101 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82573L}, 102 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546GB_QUAD_COPPER_KSP3}, 103 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_COPPER_DPT}, 104 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_SERDES_DPT}, 105 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_COPPER_SPT}, 106 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_SERDES_SPT}, 107 {} 108 }; 109 110 /* Function forward declarations */ 111 static int e1000_setup_link(struct eth_device *nic); 112 static int e1000_setup_fiber_link(struct eth_device *nic); 113 static int e1000_setup_copper_link(struct eth_device *nic); 114 static int e1000_phy_setup_autoneg(struct e1000_hw *hw); 115 static void e1000_config_collision_dist(struct e1000_hw *hw); 116 static int e1000_config_mac_to_phy(struct e1000_hw *hw); 117 static int e1000_config_fc_after_link_up(struct e1000_hw *hw); 118 static int e1000_check_for_link(struct eth_device *nic); 119 static int e1000_wait_autoneg(struct e1000_hw *hw); 120 static int e1000_get_speed_and_duplex(struct e1000_hw *hw, uint16_t * speed, 121 uint16_t * duplex); 122 static int e1000_read_phy_reg(struct e1000_hw *hw, uint32_t reg_addr, 123 uint16_t * phy_data); 124 static int e1000_write_phy_reg(struct e1000_hw *hw, uint32_t reg_addr, 125 uint16_t phy_data); 126 static int32_t e1000_phy_hw_reset(struct e1000_hw *hw); 127 static int e1000_phy_reset(struct e1000_hw *hw); 128 static int e1000_detect_gig_phy(struct e1000_hw *hw); 129 static int32_t e1000_read_eeprom(struct e1000_hw *hw, uint16_t offset, 130 uint16_t words, 131 uint16_t *data); 132 static void e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw); 133 static void e1000_set_media_type(struct e1000_hw *hw); 134 135 static int32_t e1000_swfw_sync_acquire(struct e1000_hw *hw, uint16_t mask); 136 static int32_t e1000_check_phy_reset_block(struct e1000_hw *hw); 137 #define E1000_WRITE_REG(a, reg, value) (writel((value), ((a)->hw_addr + E1000_##reg))) 138 #define E1000_READ_REG(a, reg) (readl((a)->hw_addr + E1000_##reg)) 139 #define E1000_WRITE_REG_ARRAY(a, reg, offset, value) (\ 140 writel((value), ((a)->hw_addr + E1000_##reg + ((offset) << 2)))) 141 #define E1000_READ_REG_ARRAY(a, reg, offset) ( \ 142 readl((a)->hw_addr + E1000_##reg + ((offset) << 2))) 143 #define E1000_WRITE_FLUSH(a) {uint32_t x; x = E1000_READ_REG(a, STATUS);} 144 145 #ifndef CONFIG_AP1000 /* remove for warnings */ 146 /****************************************************************************** 147 * Raises the EEPROM's clock input. 148 * 149 * hw - Struct containing variables accessed by shared code 150 * eecd - EECD's current value 151 *****************************************************************************/ 152 static void 153 e1000_raise_ee_clk(struct e1000_hw *hw, uint32_t * eecd) 154 { 155 /* Raise the clock input to the EEPROM (by setting the SK bit), and then 156 * wait 50 microseconds. 157 */ 158 *eecd = *eecd | E1000_EECD_SK; 159 E1000_WRITE_REG(hw, EECD, *eecd); 160 E1000_WRITE_FLUSH(hw); 161 udelay(50); 162 } 163 164 /****************************************************************************** 165 * Lowers the EEPROM's clock input. 166 * 167 * hw - Struct containing variables accessed by shared code 168 * eecd - EECD's current value 169 *****************************************************************************/ 170 static void 171 e1000_lower_ee_clk(struct e1000_hw *hw, uint32_t * eecd) 172 { 173 /* Lower the clock input to the EEPROM (by clearing the SK bit), and then 174 * wait 50 microseconds. 175 */ 176 *eecd = *eecd & ~E1000_EECD_SK; 177 E1000_WRITE_REG(hw, EECD, *eecd); 178 E1000_WRITE_FLUSH(hw); 179 udelay(50); 180 } 181 182 /****************************************************************************** 183 * Shift data bits out to the EEPROM. 184 * 185 * hw - Struct containing variables accessed by shared code 186 * data - data to send to the EEPROM 187 * count - number of bits to shift out 188 *****************************************************************************/ 189 static void 190 e1000_shift_out_ee_bits(struct e1000_hw *hw, uint16_t data, uint16_t count) 191 { 192 uint32_t eecd; 193 uint32_t mask; 194 195 /* We need to shift "count" bits out to the EEPROM. So, value in the 196 * "data" parameter will be shifted out to the EEPROM one bit at a time. 197 * In order to do this, "data" must be broken down into bits. 198 */ 199 mask = 0x01 << (count - 1); 200 eecd = E1000_READ_REG(hw, EECD); 201 eecd &= ~(E1000_EECD_DO | E1000_EECD_DI); 202 do { 203 /* A "1" is shifted out to the EEPROM by setting bit "DI" to a "1", 204 * and then raising and then lowering the clock (the SK bit controls 205 * the clock input to the EEPROM). A "0" is shifted out to the EEPROM 206 * by setting "DI" to "0" and then raising and then lowering the clock. 207 */ 208 eecd &= ~E1000_EECD_DI; 209 210 if (data & mask) 211 eecd |= E1000_EECD_DI; 212 213 E1000_WRITE_REG(hw, EECD, eecd); 214 E1000_WRITE_FLUSH(hw); 215 216 udelay(50); 217 218 e1000_raise_ee_clk(hw, &eecd); 219 e1000_lower_ee_clk(hw, &eecd); 220 221 mask = mask >> 1; 222 223 } while (mask); 224 225 /* We leave the "DI" bit set to "0" when we leave this routine. */ 226 eecd &= ~E1000_EECD_DI; 227 E1000_WRITE_REG(hw, EECD, eecd); 228 } 229 230 /****************************************************************************** 231 * Shift data bits in from the EEPROM 232 * 233 * hw - Struct containing variables accessed by shared code 234 *****************************************************************************/ 235 static uint16_t 236 e1000_shift_in_ee_bits(struct e1000_hw *hw, uint16_t count) 237 { 238 uint32_t eecd; 239 uint32_t i; 240 uint16_t data; 241 242 /* In order to read a register from the EEPROM, we need to shift 'count' 243 * bits in from the EEPROM. Bits are "shifted in" by raising the clock 244 * input to the EEPROM (setting the SK bit), and then reading the 245 * value of the "DO" bit. During this "shifting in" process the 246 * "DI" bit should always be clear. 247 */ 248 249 eecd = E1000_READ_REG(hw, EECD); 250 251 eecd &= ~(E1000_EECD_DO | E1000_EECD_DI); 252 data = 0; 253 254 for (i = 0; i < count; i++) { 255 data = data << 1; 256 e1000_raise_ee_clk(hw, &eecd); 257 258 eecd = E1000_READ_REG(hw, EECD); 259 260 eecd &= ~(E1000_EECD_DI); 261 if (eecd & E1000_EECD_DO) 262 data |= 1; 263 264 e1000_lower_ee_clk(hw, &eecd); 265 } 266 267 return data; 268 } 269 270 /****************************************************************************** 271 * Returns EEPROM to a "standby" state 272 * 273 * hw - Struct containing variables accessed by shared code 274 *****************************************************************************/ 275 static void 276 e1000_standby_eeprom(struct e1000_hw *hw) 277 { 278 struct e1000_eeprom_info *eeprom = &hw->eeprom; 279 uint32_t eecd; 280 281 eecd = E1000_READ_REG(hw, EECD); 282 283 if (eeprom->type == e1000_eeprom_microwire) { 284 eecd &= ~(E1000_EECD_CS | E1000_EECD_SK); 285 E1000_WRITE_REG(hw, EECD, eecd); 286 E1000_WRITE_FLUSH(hw); 287 udelay(eeprom->delay_usec); 288 289 /* Clock high */ 290 eecd |= E1000_EECD_SK; 291 E1000_WRITE_REG(hw, EECD, eecd); 292 E1000_WRITE_FLUSH(hw); 293 udelay(eeprom->delay_usec); 294 295 /* Select EEPROM */ 296 eecd |= E1000_EECD_CS; 297 E1000_WRITE_REG(hw, EECD, eecd); 298 E1000_WRITE_FLUSH(hw); 299 udelay(eeprom->delay_usec); 300 301 /* Clock low */ 302 eecd &= ~E1000_EECD_SK; 303 E1000_WRITE_REG(hw, EECD, eecd); 304 E1000_WRITE_FLUSH(hw); 305 udelay(eeprom->delay_usec); 306 } else if (eeprom->type == e1000_eeprom_spi) { 307 /* Toggle CS to flush commands */ 308 eecd |= E1000_EECD_CS; 309 E1000_WRITE_REG(hw, EECD, eecd); 310 E1000_WRITE_FLUSH(hw); 311 udelay(eeprom->delay_usec); 312 eecd &= ~E1000_EECD_CS; 313 E1000_WRITE_REG(hw, EECD, eecd); 314 E1000_WRITE_FLUSH(hw); 315 udelay(eeprom->delay_usec); 316 } 317 } 318 319 /*************************************************************************** 320 * Description: Determines if the onboard NVM is FLASH or EEPROM. 321 * 322 * hw - Struct containing variables accessed by shared code 323 ****************************************************************************/ 324 static boolean_t e1000_is_onboard_nvm_eeprom(struct e1000_hw *hw) 325 { 326 uint32_t eecd = 0; 327 328 DEBUGFUNC(); 329 330 if (hw->mac_type == e1000_ich8lan) 331 return FALSE; 332 333 if (hw->mac_type == e1000_82573) { 334 eecd = E1000_READ_REG(hw, EECD); 335 336 /* Isolate bits 15 & 16 */ 337 eecd = ((eecd >> 15) & 0x03); 338 339 /* If both bits are set, device is Flash type */ 340 if (eecd == 0x03) 341 return FALSE; 342 } 343 return TRUE; 344 } 345 346 /****************************************************************************** 347 * Prepares EEPROM for access 348 * 349 * hw - Struct containing variables accessed by shared code 350 * 351 * Lowers EEPROM clock. Clears input pin. Sets the chip select pin. This 352 * function should be called before issuing a command to the EEPROM. 353 *****************************************************************************/ 354 static int32_t 355 e1000_acquire_eeprom(struct e1000_hw *hw) 356 { 357 struct e1000_eeprom_info *eeprom = &hw->eeprom; 358 uint32_t eecd, i = 0; 359 360 DEBUGOUT(); 361 362 if (e1000_swfw_sync_acquire(hw, E1000_SWFW_EEP_SM)) 363 return -E1000_ERR_SWFW_SYNC; 364 eecd = E1000_READ_REG(hw, EECD); 365 366 if (hw->mac_type != e1000_82573) { 367 /* Request EEPROM Access */ 368 if (hw->mac_type > e1000_82544) { 369 eecd |= E1000_EECD_REQ; 370 E1000_WRITE_REG(hw, EECD, eecd); 371 eecd = E1000_READ_REG(hw, EECD); 372 while ((!(eecd & E1000_EECD_GNT)) && 373 (i < E1000_EEPROM_GRANT_ATTEMPTS)) { 374 i++; 375 udelay(5); 376 eecd = E1000_READ_REG(hw, EECD); 377 } 378 if (!(eecd & E1000_EECD_GNT)) { 379 eecd &= ~E1000_EECD_REQ; 380 E1000_WRITE_REG(hw, EECD, eecd); 381 DEBUGOUT("Could not acquire EEPROM grant\n"); 382 return -E1000_ERR_EEPROM; 383 } 384 } 385 } 386 387 /* Setup EEPROM for Read/Write */ 388 389 if (eeprom->type == e1000_eeprom_microwire) { 390 /* Clear SK and DI */ 391 eecd &= ~(E1000_EECD_DI | E1000_EECD_SK); 392 E1000_WRITE_REG(hw, EECD, eecd); 393 394 /* Set CS */ 395 eecd |= E1000_EECD_CS; 396 E1000_WRITE_REG(hw, EECD, eecd); 397 } else if (eeprom->type == e1000_eeprom_spi) { 398 /* Clear SK and CS */ 399 eecd &= ~(E1000_EECD_CS | E1000_EECD_SK); 400 E1000_WRITE_REG(hw, EECD, eecd); 401 udelay(1); 402 } 403 404 return E1000_SUCCESS; 405 } 406 407 /****************************************************************************** 408 * Sets up eeprom variables in the hw struct. Must be called after mac_type 409 * is configured. Additionally, if this is ICH8, the flash controller GbE 410 * registers must be mapped, or this will crash. 411 * 412 * hw - Struct containing variables accessed by shared code 413 *****************************************************************************/ 414 static int32_t e1000_init_eeprom_params(struct e1000_hw *hw) 415 { 416 struct e1000_eeprom_info *eeprom = &hw->eeprom; 417 uint32_t eecd = E1000_READ_REG(hw, EECD); 418 int32_t ret_val = E1000_SUCCESS; 419 uint16_t eeprom_size; 420 421 DEBUGOUT(); 422 423 switch (hw->mac_type) { 424 case e1000_82542_rev2_0: 425 case e1000_82542_rev2_1: 426 case e1000_82543: 427 case e1000_82544: 428 eeprom->type = e1000_eeprom_microwire; 429 eeprom->word_size = 64; 430 eeprom->opcode_bits = 3; 431 eeprom->address_bits = 6; 432 eeprom->delay_usec = 50; 433 eeprom->use_eerd = FALSE; 434 eeprom->use_eewr = FALSE; 435 break; 436 case e1000_82540: 437 case e1000_82545: 438 case e1000_82545_rev_3: 439 case e1000_82546: 440 case e1000_82546_rev_3: 441 eeprom->type = e1000_eeprom_microwire; 442 eeprom->opcode_bits = 3; 443 eeprom->delay_usec = 50; 444 if (eecd & E1000_EECD_SIZE) { 445 eeprom->word_size = 256; 446 eeprom->address_bits = 8; 447 } else { 448 eeprom->word_size = 64; 449 eeprom->address_bits = 6; 450 } 451 eeprom->use_eerd = FALSE; 452 eeprom->use_eewr = FALSE; 453 break; 454 case e1000_82541: 455 case e1000_82541_rev_2: 456 case e1000_82547: 457 case e1000_82547_rev_2: 458 if (eecd & E1000_EECD_TYPE) { 459 eeprom->type = e1000_eeprom_spi; 460 eeprom->opcode_bits = 8; 461 eeprom->delay_usec = 1; 462 if (eecd & E1000_EECD_ADDR_BITS) { 463 eeprom->page_size = 32; 464 eeprom->address_bits = 16; 465 } else { 466 eeprom->page_size = 8; 467 eeprom->address_bits = 8; 468 } 469 } else { 470 eeprom->type = e1000_eeprom_microwire; 471 eeprom->opcode_bits = 3; 472 eeprom->delay_usec = 50; 473 if (eecd & E1000_EECD_ADDR_BITS) { 474 eeprom->word_size = 256; 475 eeprom->address_bits = 8; 476 } else { 477 eeprom->word_size = 64; 478 eeprom->address_bits = 6; 479 } 480 } 481 eeprom->use_eerd = FALSE; 482 eeprom->use_eewr = FALSE; 483 break; 484 case e1000_82571: 485 case e1000_82572: 486 eeprom->type = e1000_eeprom_spi; 487 eeprom->opcode_bits = 8; 488 eeprom->delay_usec = 1; 489 if (eecd & E1000_EECD_ADDR_BITS) { 490 eeprom->page_size = 32; 491 eeprom->address_bits = 16; 492 } else { 493 eeprom->page_size = 8; 494 eeprom->address_bits = 8; 495 } 496 eeprom->use_eerd = FALSE; 497 eeprom->use_eewr = FALSE; 498 break; 499 case e1000_82573: 500 eeprom->type = e1000_eeprom_spi; 501 eeprom->opcode_bits = 8; 502 eeprom->delay_usec = 1; 503 if (eecd & E1000_EECD_ADDR_BITS) { 504 eeprom->page_size = 32; 505 eeprom->address_bits = 16; 506 } else { 507 eeprom->page_size = 8; 508 eeprom->address_bits = 8; 509 } 510 eeprom->use_eerd = TRUE; 511 eeprom->use_eewr = TRUE; 512 if (e1000_is_onboard_nvm_eeprom(hw) == FALSE) { 513 eeprom->type = e1000_eeprom_flash; 514 eeprom->word_size = 2048; 515 516 /* Ensure that the Autonomous FLASH update bit is cleared due to 517 * Flash update issue on parts which use a FLASH for NVM. */ 518 eecd &= ~E1000_EECD_AUPDEN; 519 E1000_WRITE_REG(hw, EECD, eecd); 520 } 521 break; 522 case e1000_80003es2lan: 523 eeprom->type = e1000_eeprom_spi; 524 eeprom->opcode_bits = 8; 525 eeprom->delay_usec = 1; 526 if (eecd & E1000_EECD_ADDR_BITS) { 527 eeprom->page_size = 32; 528 eeprom->address_bits = 16; 529 } else { 530 eeprom->page_size = 8; 531 eeprom->address_bits = 8; 532 } 533 eeprom->use_eerd = TRUE; 534 eeprom->use_eewr = FALSE; 535 break; 536 537 /* ich8lan does not support currently. if needed, please 538 * add corresponding code and functions. 539 */ 540 #if 0 541 case e1000_ich8lan: 542 { 543 int32_t i = 0; 544 545 eeprom->type = e1000_eeprom_ich8; 546 eeprom->use_eerd = FALSE; 547 eeprom->use_eewr = FALSE; 548 eeprom->word_size = E1000_SHADOW_RAM_WORDS; 549 uint32_t flash_size = E1000_READ_ICH_FLASH_REG(hw, 550 ICH_FLASH_GFPREG); 551 /* Zero the shadow RAM structure. But don't load it from NVM 552 * so as to save time for driver init */ 553 if (hw->eeprom_shadow_ram != NULL) { 554 for (i = 0; i < E1000_SHADOW_RAM_WORDS; i++) { 555 hw->eeprom_shadow_ram[i].modified = FALSE; 556 hw->eeprom_shadow_ram[i].eeprom_word = 0xFFFF; 557 } 558 } 559 560 hw->flash_base_addr = (flash_size & ICH_GFPREG_BASE_MASK) * 561 ICH_FLASH_SECTOR_SIZE; 562 563 hw->flash_bank_size = ((flash_size >> 16) 564 & ICH_GFPREG_BASE_MASK) + 1; 565 hw->flash_bank_size -= (flash_size & ICH_GFPREG_BASE_MASK); 566 567 hw->flash_bank_size *= ICH_FLASH_SECTOR_SIZE; 568 569 hw->flash_bank_size /= 2 * sizeof(uint16_t); 570 break; 571 } 572 #endif 573 default: 574 break; 575 } 576 577 if (eeprom->type == e1000_eeprom_spi) { 578 /* eeprom_size will be an enum [0..8] that maps 579 * to eeprom sizes 128B to 580 * 32KB (incremented by powers of 2). 581 */ 582 if (hw->mac_type <= e1000_82547_rev_2) { 583 /* Set to default value for initial eeprom read. */ 584 eeprom->word_size = 64; 585 ret_val = e1000_read_eeprom(hw, EEPROM_CFG, 1, 586 &eeprom_size); 587 if (ret_val) 588 return ret_val; 589 eeprom_size = (eeprom_size & EEPROM_SIZE_MASK) 590 >> EEPROM_SIZE_SHIFT; 591 /* 256B eeprom size was not supported in earlier 592 * hardware, so we bump eeprom_size up one to 593 * ensure that "1" (which maps to 256B) is never 594 * the result used in the shifting logic below. */ 595 if (eeprom_size) 596 eeprom_size++; 597 } else { 598 eeprom_size = (uint16_t)((eecd & 599 E1000_EECD_SIZE_EX_MASK) >> 600 E1000_EECD_SIZE_EX_SHIFT); 601 } 602 603 eeprom->word_size = 1 << (eeprom_size + EEPROM_WORD_SIZE_SHIFT); 604 } 605 return ret_val; 606 } 607 608 /****************************************************************************** 609 * Polls the status bit (bit 1) of the EERD to determine when the read is done. 610 * 611 * hw - Struct containing variables accessed by shared code 612 *****************************************************************************/ 613 static int32_t 614 e1000_poll_eerd_eewr_done(struct e1000_hw *hw, int eerd) 615 { 616 uint32_t attempts = 100000; 617 uint32_t i, reg = 0; 618 int32_t done = E1000_ERR_EEPROM; 619 620 for (i = 0; i < attempts; i++) { 621 if (eerd == E1000_EEPROM_POLL_READ) 622 reg = E1000_READ_REG(hw, EERD); 623 else 624 reg = E1000_READ_REG(hw, EEWR); 625 626 if (reg & E1000_EEPROM_RW_REG_DONE) { 627 done = E1000_SUCCESS; 628 break; 629 } 630 udelay(5); 631 } 632 633 return done; 634 } 635 636 /****************************************************************************** 637 * Reads a 16 bit word from the EEPROM using the EERD register. 638 * 639 * hw - Struct containing variables accessed by shared code 640 * offset - offset of word in the EEPROM to read 641 * data - word read from the EEPROM 642 * words - number of words to read 643 *****************************************************************************/ 644 static int32_t 645 e1000_read_eeprom_eerd(struct e1000_hw *hw, 646 uint16_t offset, 647 uint16_t words, 648 uint16_t *data) 649 { 650 uint32_t i, eerd = 0; 651 int32_t error = 0; 652 653 for (i = 0; i < words; i++) { 654 eerd = ((offset+i) << E1000_EEPROM_RW_ADDR_SHIFT) + 655 E1000_EEPROM_RW_REG_START; 656 657 E1000_WRITE_REG(hw, EERD, eerd); 658 error = e1000_poll_eerd_eewr_done(hw, E1000_EEPROM_POLL_READ); 659 660 if (error) 661 break; 662 data[i] = (E1000_READ_REG(hw, EERD) >> 663 E1000_EEPROM_RW_REG_DATA); 664 665 } 666 667 return error; 668 } 669 670 static void 671 e1000_release_eeprom(struct e1000_hw *hw) 672 { 673 uint32_t eecd; 674 675 DEBUGFUNC(); 676 677 eecd = E1000_READ_REG(hw, EECD); 678 679 if (hw->eeprom.type == e1000_eeprom_spi) { 680 eecd |= E1000_EECD_CS; /* Pull CS high */ 681 eecd &= ~E1000_EECD_SK; /* Lower SCK */ 682 683 E1000_WRITE_REG(hw, EECD, eecd); 684 685 udelay(hw->eeprom.delay_usec); 686 } else if (hw->eeprom.type == e1000_eeprom_microwire) { 687 /* cleanup eeprom */ 688 689 /* CS on Microwire is active-high */ 690 eecd &= ~(E1000_EECD_CS | E1000_EECD_DI); 691 692 E1000_WRITE_REG(hw, EECD, eecd); 693 694 /* Rising edge of clock */ 695 eecd |= E1000_EECD_SK; 696 E1000_WRITE_REG(hw, EECD, eecd); 697 E1000_WRITE_FLUSH(hw); 698 udelay(hw->eeprom.delay_usec); 699 700 /* Falling edge of clock */ 701 eecd &= ~E1000_EECD_SK; 702 E1000_WRITE_REG(hw, EECD, eecd); 703 E1000_WRITE_FLUSH(hw); 704 udelay(hw->eeprom.delay_usec); 705 } 706 707 /* Stop requesting EEPROM access */ 708 if (hw->mac_type > e1000_82544) { 709 eecd &= ~E1000_EECD_REQ; 710 E1000_WRITE_REG(hw, EECD, eecd); 711 } 712 } 713 /****************************************************************************** 714 * Reads a 16 bit word from the EEPROM. 715 * 716 * hw - Struct containing variables accessed by shared code 717 *****************************************************************************/ 718 static int32_t 719 e1000_spi_eeprom_ready(struct e1000_hw *hw) 720 { 721 uint16_t retry_count = 0; 722 uint8_t spi_stat_reg; 723 724 DEBUGFUNC(); 725 726 /* Read "Status Register" repeatedly until the LSB is cleared. The 727 * EEPROM will signal that the command has been completed by clearing 728 * bit 0 of the internal status register. If it's not cleared within 729 * 5 milliseconds, then error out. 730 */ 731 retry_count = 0; 732 do { 733 e1000_shift_out_ee_bits(hw, EEPROM_RDSR_OPCODE_SPI, 734 hw->eeprom.opcode_bits); 735 spi_stat_reg = (uint8_t)e1000_shift_in_ee_bits(hw, 8); 736 if (!(spi_stat_reg & EEPROM_STATUS_RDY_SPI)) 737 break; 738 739 udelay(5); 740 retry_count += 5; 741 742 e1000_standby_eeprom(hw); 743 } while (retry_count < EEPROM_MAX_RETRY_SPI); 744 745 /* ATMEL SPI write time could vary from 0-20mSec on 3.3V devices (and 746 * only 0-5mSec on 5V devices) 747 */ 748 if (retry_count >= EEPROM_MAX_RETRY_SPI) { 749 DEBUGOUT("SPI EEPROM Status error\n"); 750 return -E1000_ERR_EEPROM; 751 } 752 753 return E1000_SUCCESS; 754 } 755 756 /****************************************************************************** 757 * Reads a 16 bit word from the EEPROM. 758 * 759 * hw - Struct containing variables accessed by shared code 760 * offset - offset of word in the EEPROM to read 761 * data - word read from the EEPROM 762 *****************************************************************************/ 763 static int32_t 764 e1000_read_eeprom(struct e1000_hw *hw, uint16_t offset, 765 uint16_t words, uint16_t *data) 766 { 767 struct e1000_eeprom_info *eeprom = &hw->eeprom; 768 uint32_t i = 0; 769 770 DEBUGFUNC(); 771 772 /* If eeprom is not yet detected, do so now */ 773 if (eeprom->word_size == 0) 774 e1000_init_eeprom_params(hw); 775 776 /* A check for invalid values: offset too large, too many words, 777 * and not enough words. 778 */ 779 if ((offset >= eeprom->word_size) || 780 (words > eeprom->word_size - offset) || 781 (words == 0)) { 782 DEBUGOUT("\"words\" parameter out of bounds." 783 "Words = %d, size = %d\n", offset, eeprom->word_size); 784 return -E1000_ERR_EEPROM; 785 } 786 787 /* EEPROM's that don't use EERD to read require us to bit-bang the SPI 788 * directly. In this case, we need to acquire the EEPROM so that 789 * FW or other port software does not interrupt. 790 */ 791 if (e1000_is_onboard_nvm_eeprom(hw) == TRUE && 792 hw->eeprom.use_eerd == FALSE) { 793 794 /* Prepare the EEPROM for bit-bang reading */ 795 if (e1000_acquire_eeprom(hw) != E1000_SUCCESS) 796 return -E1000_ERR_EEPROM; 797 } 798 799 /* Eerd register EEPROM access requires no eeprom aquire/release */ 800 if (eeprom->use_eerd == TRUE) 801 return e1000_read_eeprom_eerd(hw, offset, words, data); 802 803 /* ich8lan does not support currently. if needed, please 804 * add corresponding code and functions. 805 */ 806 #if 0 807 /* ICH EEPROM access is done via the ICH flash controller */ 808 if (eeprom->type == e1000_eeprom_ich8) 809 return e1000_read_eeprom_ich8(hw, offset, words, data); 810 #endif 811 /* Set up the SPI or Microwire EEPROM for bit-bang reading. We have 812 * acquired the EEPROM at this point, so any returns should relase it */ 813 if (eeprom->type == e1000_eeprom_spi) { 814 uint16_t word_in; 815 uint8_t read_opcode = EEPROM_READ_OPCODE_SPI; 816 817 if (e1000_spi_eeprom_ready(hw)) { 818 e1000_release_eeprom(hw); 819 return -E1000_ERR_EEPROM; 820 } 821 822 e1000_standby_eeprom(hw); 823 824 /* Some SPI eeproms use the 8th address bit embedded in 825 * the opcode */ 826 if ((eeprom->address_bits == 8) && (offset >= 128)) 827 read_opcode |= EEPROM_A8_OPCODE_SPI; 828 829 /* Send the READ command (opcode + addr) */ 830 e1000_shift_out_ee_bits(hw, read_opcode, eeprom->opcode_bits); 831 e1000_shift_out_ee_bits(hw, (uint16_t)(offset*2), 832 eeprom->address_bits); 833 834 /* Read the data. The address of the eeprom internally 835 * increments with each byte (spi) being read, saving on the 836 * overhead of eeprom setup and tear-down. The address 837 * counter will roll over if reading beyond the size of 838 * the eeprom, thus allowing the entire memory to be read 839 * starting from any offset. */ 840 for (i = 0; i < words; i++) { 841 word_in = e1000_shift_in_ee_bits(hw, 16); 842 data[i] = (word_in >> 8) | (word_in << 8); 843 } 844 } else if (eeprom->type == e1000_eeprom_microwire) { 845 for (i = 0; i < words; i++) { 846 /* Send the READ command (opcode + addr) */ 847 e1000_shift_out_ee_bits(hw, 848 EEPROM_READ_OPCODE_MICROWIRE, 849 eeprom->opcode_bits); 850 e1000_shift_out_ee_bits(hw, (uint16_t)(offset + i), 851 eeprom->address_bits); 852 853 /* Read the data. For microwire, each word requires 854 * the overhead of eeprom setup and tear-down. */ 855 data[i] = e1000_shift_in_ee_bits(hw, 16); 856 e1000_standby_eeprom(hw); 857 } 858 } 859 860 /* End this read operation */ 861 e1000_release_eeprom(hw); 862 863 return E1000_SUCCESS; 864 } 865 866 /****************************************************************************** 867 * Verifies that the EEPROM has a valid checksum 868 * 869 * hw - Struct containing variables accessed by shared code 870 * 871 * Reads the first 64 16 bit words of the EEPROM and sums the values read. 872 * If the the sum of the 64 16 bit words is 0xBABA, the EEPROM's checksum is 873 * valid. 874 *****************************************************************************/ 875 static int 876 e1000_validate_eeprom_checksum(struct eth_device *nic) 877 { 878 struct e1000_hw *hw = nic->priv; 879 uint16_t checksum = 0; 880 uint16_t i, eeprom_data; 881 882 DEBUGFUNC(); 883 884 for (i = 0; i < (EEPROM_CHECKSUM_REG + 1); i++) { 885 if (e1000_read_eeprom(hw, i, 1, &eeprom_data) < 0) { 886 DEBUGOUT("EEPROM Read Error\n"); 887 return -E1000_ERR_EEPROM; 888 } 889 checksum += eeprom_data; 890 } 891 892 if (checksum == (uint16_t) EEPROM_SUM) { 893 return 0; 894 } else { 895 DEBUGOUT("EEPROM Checksum Invalid\n"); 896 return -E1000_ERR_EEPROM; 897 } 898 } 899 #endif /* #ifndef CONFIG_AP1000 */ 900 901 /*************************************************************************** 902 * 903 * Obtaining software semaphore bit (SMBI) before resetting PHY. 904 * 905 * hw: Struct containing variables accessed by shared code 906 * 907 * returns: - E1000_ERR_RESET if fail to obtain semaphore. 908 * E1000_SUCCESS at any other case. 909 * 910 ***************************************************************************/ 911 static int32_t 912 e1000_get_software_semaphore(struct e1000_hw *hw) 913 { 914 int32_t timeout = hw->eeprom.word_size + 1; 915 uint32_t swsm; 916 917 DEBUGFUNC(); 918 919 if (hw->mac_type != e1000_80003es2lan) 920 return E1000_SUCCESS; 921 922 while (timeout) { 923 swsm = E1000_READ_REG(hw, SWSM); 924 /* If SMBI bit cleared, it is now set and we hold 925 * the semaphore */ 926 if (!(swsm & E1000_SWSM_SMBI)) 927 break; 928 mdelay(1); 929 timeout--; 930 } 931 932 if (!timeout) { 933 DEBUGOUT("Driver can't access device - SMBI bit is set.\n"); 934 return -E1000_ERR_RESET; 935 } 936 937 return E1000_SUCCESS; 938 } 939 940 /*************************************************************************** 941 * This function clears HW semaphore bits. 942 * 943 * hw: Struct containing variables accessed by shared code 944 * 945 * returns: - None. 946 * 947 ***************************************************************************/ 948 static void 949 e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw) 950 { 951 uint32_t swsm; 952 953 DEBUGFUNC(); 954 955 if (!hw->eeprom_semaphore_present) 956 return; 957 958 swsm = E1000_READ_REG(hw, SWSM); 959 if (hw->mac_type == e1000_80003es2lan) { 960 /* Release both semaphores. */ 961 swsm &= ~(E1000_SWSM_SMBI | E1000_SWSM_SWESMBI); 962 } else 963 swsm &= ~(E1000_SWSM_SWESMBI); 964 E1000_WRITE_REG(hw, SWSM, swsm); 965 } 966 967 /*************************************************************************** 968 * 969 * Using the combination of SMBI and SWESMBI semaphore bits when resetting 970 * adapter or Eeprom access. 971 * 972 * hw: Struct containing variables accessed by shared code 973 * 974 * returns: - E1000_ERR_EEPROM if fail to access EEPROM. 975 * E1000_SUCCESS at any other case. 976 * 977 ***************************************************************************/ 978 static int32_t 979 e1000_get_hw_eeprom_semaphore(struct e1000_hw *hw) 980 { 981 int32_t timeout; 982 uint32_t swsm; 983 984 DEBUGFUNC(); 985 986 if (!hw->eeprom_semaphore_present) 987 return E1000_SUCCESS; 988 989 if (hw->mac_type == e1000_80003es2lan) { 990 /* Get the SW semaphore. */ 991 if (e1000_get_software_semaphore(hw) != E1000_SUCCESS) 992 return -E1000_ERR_EEPROM; 993 } 994 995 /* Get the FW semaphore. */ 996 timeout = hw->eeprom.word_size + 1; 997 while (timeout) { 998 swsm = E1000_READ_REG(hw, SWSM); 999 swsm |= E1000_SWSM_SWESMBI; 1000 E1000_WRITE_REG(hw, SWSM, swsm); 1001 /* if we managed to set the bit we got the semaphore. */ 1002 swsm = E1000_READ_REG(hw, SWSM); 1003 if (swsm & E1000_SWSM_SWESMBI) 1004 break; 1005 1006 udelay(50); 1007 timeout--; 1008 } 1009 1010 if (!timeout) { 1011 /* Release semaphores */ 1012 e1000_put_hw_eeprom_semaphore(hw); 1013 DEBUGOUT("Driver can't access the Eeprom - " 1014 "SWESMBI bit is set.\n"); 1015 return -E1000_ERR_EEPROM; 1016 } 1017 1018 return E1000_SUCCESS; 1019 } 1020 1021 static int32_t 1022 e1000_swfw_sync_acquire(struct e1000_hw *hw, uint16_t mask) 1023 { 1024 uint32_t swfw_sync = 0; 1025 uint32_t swmask = mask; 1026 uint32_t fwmask = mask << 16; 1027 int32_t timeout = 200; 1028 1029 DEBUGFUNC(); 1030 while (timeout) { 1031 if (e1000_get_hw_eeprom_semaphore(hw)) 1032 return -E1000_ERR_SWFW_SYNC; 1033 1034 swfw_sync = E1000_READ_REG(hw, SW_FW_SYNC); 1035 if (!(swfw_sync & (fwmask | swmask))) 1036 break; 1037 1038 /* firmware currently using resource (fwmask) */ 1039 /* or other software thread currently using resource (swmask) */ 1040 e1000_put_hw_eeprom_semaphore(hw); 1041 mdelay(5); 1042 timeout--; 1043 } 1044 1045 if (!timeout) { 1046 DEBUGOUT("Driver can't access resource, SW_FW_SYNC timeout.\n"); 1047 return -E1000_ERR_SWFW_SYNC; 1048 } 1049 1050 swfw_sync |= swmask; 1051 E1000_WRITE_REG(hw, SW_FW_SYNC, swfw_sync); 1052 1053 e1000_put_hw_eeprom_semaphore(hw); 1054 return E1000_SUCCESS; 1055 } 1056 1057 /****************************************************************************** 1058 * Reads the adapter's MAC address from the EEPROM and inverts the LSB for the 1059 * second function of dual function devices 1060 * 1061 * nic - Struct containing variables accessed by shared code 1062 *****************************************************************************/ 1063 static int 1064 e1000_read_mac_addr(struct eth_device *nic) 1065 { 1066 #ifndef CONFIG_AP1000 1067 struct e1000_hw *hw = nic->priv; 1068 uint16_t offset; 1069 uint16_t eeprom_data; 1070 int i; 1071 1072 DEBUGFUNC(); 1073 1074 for (i = 0; i < NODE_ADDRESS_SIZE; i += 2) { 1075 offset = i >> 1; 1076 if (e1000_read_eeprom(hw, offset, 1, &eeprom_data) < 0) { 1077 DEBUGOUT("EEPROM Read Error\n"); 1078 return -E1000_ERR_EEPROM; 1079 } 1080 nic->enetaddr[i] = eeprom_data & 0xff; 1081 nic->enetaddr[i + 1] = (eeprom_data >> 8) & 0xff; 1082 } 1083 if ((hw->mac_type == e1000_82546) && 1084 (E1000_READ_REG(hw, STATUS) & E1000_STATUS_FUNC_1)) { 1085 /* Invert the last bit if this is the second device */ 1086 nic->enetaddr[5] += 1; 1087 } 1088 #ifdef CONFIG_E1000_FALLBACK_MAC 1089 if ( *(u32*)(nic->enetaddr) == 0 || *(u32*)(nic->enetaddr) == ~0 ) { 1090 unsigned char fb_mac[NODE_ADDRESS_SIZE] = CONFIG_E1000_FALLBACK_MAC; 1091 1092 memcpy (nic->enetaddr, fb_mac, NODE_ADDRESS_SIZE); 1093 } 1094 #endif 1095 #else 1096 /* 1097 * The AP1000's e1000 has no eeprom; the MAC address is stored in the 1098 * environment variables. Currently this does not support the addition 1099 * of a PMC e1000 card, which is certainly a possibility, so this should 1100 * be updated to properly use the env variable only for the onboard e1000 1101 */ 1102 1103 int ii; 1104 char *s, *e; 1105 1106 DEBUGFUNC(); 1107 1108 s = getenv ("ethaddr"); 1109 if (s == NULL) { 1110 return -E1000_ERR_EEPROM; 1111 } else { 1112 for(ii = 0; ii < 6; ii++) { 1113 nic->enetaddr[ii] = s ? simple_strtoul (s, &e, 16) : 0; 1114 if (s){ 1115 s = (*e) ? e + 1 : e; 1116 } 1117 } 1118 } 1119 #endif 1120 return 0; 1121 } 1122 1123 /****************************************************************************** 1124 * Initializes receive address filters. 1125 * 1126 * hw - Struct containing variables accessed by shared code 1127 * 1128 * Places the MAC address in receive address register 0 and clears the rest 1129 * of the receive addresss registers. Clears the multicast table. Assumes 1130 * the receiver is in reset when the routine is called. 1131 *****************************************************************************/ 1132 static void 1133 e1000_init_rx_addrs(struct eth_device *nic) 1134 { 1135 struct e1000_hw *hw = nic->priv; 1136 uint32_t i; 1137 uint32_t addr_low; 1138 uint32_t addr_high; 1139 1140 DEBUGFUNC(); 1141 1142 /* Setup the receive address. */ 1143 DEBUGOUT("Programming MAC Address into RAR[0]\n"); 1144 addr_low = (nic->enetaddr[0] | 1145 (nic->enetaddr[1] << 8) | 1146 (nic->enetaddr[2] << 16) | (nic->enetaddr[3] << 24)); 1147 1148 addr_high = (nic->enetaddr[4] | (nic->enetaddr[5] << 8) | E1000_RAH_AV); 1149 1150 E1000_WRITE_REG_ARRAY(hw, RA, 0, addr_low); 1151 E1000_WRITE_REG_ARRAY(hw, RA, 1, addr_high); 1152 1153 /* Zero out the other 15 receive addresses. */ 1154 DEBUGOUT("Clearing RAR[1-15]\n"); 1155 for (i = 1; i < E1000_RAR_ENTRIES; i++) { 1156 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1), 0); 1157 E1000_WRITE_REG_ARRAY(hw, RA, ((i << 1) + 1), 0); 1158 } 1159 } 1160 1161 /****************************************************************************** 1162 * Clears the VLAN filer table 1163 * 1164 * hw - Struct containing variables accessed by shared code 1165 *****************************************************************************/ 1166 static void 1167 e1000_clear_vfta(struct e1000_hw *hw) 1168 { 1169 uint32_t offset; 1170 1171 for (offset = 0; offset < E1000_VLAN_FILTER_TBL_SIZE; offset++) 1172 E1000_WRITE_REG_ARRAY(hw, VFTA, offset, 0); 1173 } 1174 1175 /****************************************************************************** 1176 * Set the mac type member in the hw struct. 1177 * 1178 * hw - Struct containing variables accessed by shared code 1179 *****************************************************************************/ 1180 int32_t 1181 e1000_set_mac_type(struct e1000_hw *hw) 1182 { 1183 DEBUGFUNC(); 1184 1185 switch (hw->device_id) { 1186 case E1000_DEV_ID_82542: 1187 switch (hw->revision_id) { 1188 case E1000_82542_2_0_REV_ID: 1189 hw->mac_type = e1000_82542_rev2_0; 1190 break; 1191 case E1000_82542_2_1_REV_ID: 1192 hw->mac_type = e1000_82542_rev2_1; 1193 break; 1194 default: 1195 /* Invalid 82542 revision ID */ 1196 return -E1000_ERR_MAC_TYPE; 1197 } 1198 break; 1199 case E1000_DEV_ID_82543GC_FIBER: 1200 case E1000_DEV_ID_82543GC_COPPER: 1201 hw->mac_type = e1000_82543; 1202 break; 1203 case E1000_DEV_ID_82544EI_COPPER: 1204 case E1000_DEV_ID_82544EI_FIBER: 1205 case E1000_DEV_ID_82544GC_COPPER: 1206 case E1000_DEV_ID_82544GC_LOM: 1207 hw->mac_type = e1000_82544; 1208 break; 1209 case E1000_DEV_ID_82540EM: 1210 case E1000_DEV_ID_82540EM_LOM: 1211 case E1000_DEV_ID_82540EP: 1212 case E1000_DEV_ID_82540EP_LOM: 1213 case E1000_DEV_ID_82540EP_LP: 1214 hw->mac_type = e1000_82540; 1215 break; 1216 case E1000_DEV_ID_82545EM_COPPER: 1217 case E1000_DEV_ID_82545EM_FIBER: 1218 hw->mac_type = e1000_82545; 1219 break; 1220 case E1000_DEV_ID_82545GM_COPPER: 1221 case E1000_DEV_ID_82545GM_FIBER: 1222 case E1000_DEV_ID_82545GM_SERDES: 1223 hw->mac_type = e1000_82545_rev_3; 1224 break; 1225 case E1000_DEV_ID_82546EB_COPPER: 1226 case E1000_DEV_ID_82546EB_FIBER: 1227 case E1000_DEV_ID_82546EB_QUAD_COPPER: 1228 hw->mac_type = e1000_82546; 1229 break; 1230 case E1000_DEV_ID_82546GB_COPPER: 1231 case E1000_DEV_ID_82546GB_FIBER: 1232 case E1000_DEV_ID_82546GB_SERDES: 1233 case E1000_DEV_ID_82546GB_PCIE: 1234 case E1000_DEV_ID_82546GB_QUAD_COPPER: 1235 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: 1236 hw->mac_type = e1000_82546_rev_3; 1237 break; 1238 case E1000_DEV_ID_82541EI: 1239 case E1000_DEV_ID_82541EI_MOBILE: 1240 case E1000_DEV_ID_82541ER_LOM: 1241 hw->mac_type = e1000_82541; 1242 break; 1243 case E1000_DEV_ID_82541ER: 1244 case E1000_DEV_ID_82541GI: 1245 case E1000_DEV_ID_82541GI_LF: 1246 case E1000_DEV_ID_82541GI_MOBILE: 1247 hw->mac_type = e1000_82541_rev_2; 1248 break; 1249 case E1000_DEV_ID_82547EI: 1250 case E1000_DEV_ID_82547EI_MOBILE: 1251 hw->mac_type = e1000_82547; 1252 break; 1253 case E1000_DEV_ID_82547GI: 1254 hw->mac_type = e1000_82547_rev_2; 1255 break; 1256 case E1000_DEV_ID_82571EB_COPPER: 1257 case E1000_DEV_ID_82571EB_FIBER: 1258 case E1000_DEV_ID_82571EB_SERDES: 1259 case E1000_DEV_ID_82571EB_SERDES_DUAL: 1260 case E1000_DEV_ID_82571EB_SERDES_QUAD: 1261 case E1000_DEV_ID_82571EB_QUAD_COPPER: 1262 case E1000_DEV_ID_82571PT_QUAD_COPPER: 1263 case E1000_DEV_ID_82571EB_QUAD_FIBER: 1264 case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE: 1265 hw->mac_type = e1000_82571; 1266 break; 1267 case E1000_DEV_ID_82572EI_COPPER: 1268 case E1000_DEV_ID_82572EI_FIBER: 1269 case E1000_DEV_ID_82572EI_SERDES: 1270 case E1000_DEV_ID_82572EI: 1271 hw->mac_type = e1000_82572; 1272 break; 1273 case E1000_DEV_ID_82573E: 1274 case E1000_DEV_ID_82573E_IAMT: 1275 case E1000_DEV_ID_82573L: 1276 hw->mac_type = e1000_82573; 1277 break; 1278 case E1000_DEV_ID_80003ES2LAN_COPPER_SPT: 1279 case E1000_DEV_ID_80003ES2LAN_SERDES_SPT: 1280 case E1000_DEV_ID_80003ES2LAN_COPPER_DPT: 1281 case E1000_DEV_ID_80003ES2LAN_SERDES_DPT: 1282 hw->mac_type = e1000_80003es2lan; 1283 break; 1284 case E1000_DEV_ID_ICH8_IGP_M_AMT: 1285 case E1000_DEV_ID_ICH8_IGP_AMT: 1286 case E1000_DEV_ID_ICH8_IGP_C: 1287 case E1000_DEV_ID_ICH8_IFE: 1288 case E1000_DEV_ID_ICH8_IFE_GT: 1289 case E1000_DEV_ID_ICH8_IFE_G: 1290 case E1000_DEV_ID_ICH8_IGP_M: 1291 hw->mac_type = e1000_ich8lan; 1292 break; 1293 default: 1294 /* Should never have loaded on this device */ 1295 return -E1000_ERR_MAC_TYPE; 1296 } 1297 return E1000_SUCCESS; 1298 } 1299 1300 /****************************************************************************** 1301 * Reset the transmit and receive units; mask and clear all interrupts. 1302 * 1303 * hw - Struct containing variables accessed by shared code 1304 *****************************************************************************/ 1305 void 1306 e1000_reset_hw(struct e1000_hw *hw) 1307 { 1308 uint32_t ctrl; 1309 uint32_t ctrl_ext; 1310 uint32_t icr; 1311 uint32_t manc; 1312 1313 DEBUGFUNC(); 1314 1315 /* For 82542 (rev 2.0), disable MWI before issuing a device reset */ 1316 if (hw->mac_type == e1000_82542_rev2_0) { 1317 DEBUGOUT("Disabling MWI on 82542 rev 2.0\n"); 1318 pci_write_config_word(hw->pdev, PCI_COMMAND, 1319 hw->pci_cmd_word & ~PCI_COMMAND_INVALIDATE); 1320 } 1321 1322 /* Clear interrupt mask to stop board from generating interrupts */ 1323 DEBUGOUT("Masking off all interrupts\n"); 1324 E1000_WRITE_REG(hw, IMC, 0xffffffff); 1325 1326 /* Disable the Transmit and Receive units. Then delay to allow 1327 * any pending transactions to complete before we hit the MAC with 1328 * the global reset. 1329 */ 1330 E1000_WRITE_REG(hw, RCTL, 0); 1331 E1000_WRITE_REG(hw, TCTL, E1000_TCTL_PSP); 1332 E1000_WRITE_FLUSH(hw); 1333 1334 /* The tbi_compatibility_on Flag must be cleared when Rctl is cleared. */ 1335 hw->tbi_compatibility_on = FALSE; 1336 1337 /* Delay to allow any outstanding PCI transactions to complete before 1338 * resetting the device 1339 */ 1340 mdelay(10); 1341 1342 /* Issue a global reset to the MAC. This will reset the chip's 1343 * transmit, receive, DMA, and link units. It will not effect 1344 * the current PCI configuration. The global reset bit is self- 1345 * clearing, and should clear within a microsecond. 1346 */ 1347 DEBUGOUT("Issuing a global reset to MAC\n"); 1348 ctrl = E1000_READ_REG(hw, CTRL); 1349 1350 E1000_WRITE_REG(hw, CTRL, (ctrl | E1000_CTRL_RST)); 1351 1352 /* Force a reload from the EEPROM if necessary */ 1353 if (hw->mac_type < e1000_82540) { 1354 /* Wait for reset to complete */ 1355 udelay(10); 1356 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); 1357 ctrl_ext |= E1000_CTRL_EXT_EE_RST; 1358 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); 1359 E1000_WRITE_FLUSH(hw); 1360 /* Wait for EEPROM reload */ 1361 mdelay(2); 1362 } else { 1363 /* Wait for EEPROM reload (it happens automatically) */ 1364 mdelay(4); 1365 /* Dissable HW ARPs on ASF enabled adapters */ 1366 manc = E1000_READ_REG(hw, MANC); 1367 manc &= ~(E1000_MANC_ARP_EN); 1368 E1000_WRITE_REG(hw, MANC, manc); 1369 } 1370 1371 /* Clear interrupt mask to stop board from generating interrupts */ 1372 DEBUGOUT("Masking off all interrupts\n"); 1373 E1000_WRITE_REG(hw, IMC, 0xffffffff); 1374 1375 /* Clear any pending interrupt events. */ 1376 icr = E1000_READ_REG(hw, ICR); 1377 1378 /* If MWI was previously enabled, reenable it. */ 1379 if (hw->mac_type == e1000_82542_rev2_0) { 1380 pci_write_config_word(hw->pdev, PCI_COMMAND, hw->pci_cmd_word); 1381 } 1382 E1000_WRITE_REG(hw, PBA, E1000_DEFAULT_PBA); 1383 } 1384 1385 /****************************************************************************** 1386 * 1387 * Initialize a number of hardware-dependent bits 1388 * 1389 * hw: Struct containing variables accessed by shared code 1390 * 1391 * This function contains hardware limitation workarounds for PCI-E adapters 1392 * 1393 *****************************************************************************/ 1394 static void 1395 e1000_initialize_hardware_bits(struct e1000_hw *hw) 1396 { 1397 if ((hw->mac_type >= e1000_82571) && 1398 (!hw->initialize_hw_bits_disable)) { 1399 /* Settings common to all PCI-express silicon */ 1400 uint32_t reg_ctrl, reg_ctrl_ext; 1401 uint32_t reg_tarc0, reg_tarc1; 1402 uint32_t reg_tctl; 1403 uint32_t reg_txdctl, reg_txdctl1; 1404 1405 /* link autonegotiation/sync workarounds */ 1406 reg_tarc0 = E1000_READ_REG(hw, TARC0); 1407 reg_tarc0 &= ~((1 << 30)|(1 << 29)|(1 << 28)|(1 << 27)); 1408 1409 /* Enable not-done TX descriptor counting */ 1410 reg_txdctl = E1000_READ_REG(hw, TXDCTL); 1411 reg_txdctl |= E1000_TXDCTL_COUNT_DESC; 1412 E1000_WRITE_REG(hw, TXDCTL, reg_txdctl); 1413 1414 reg_txdctl1 = E1000_READ_REG(hw, TXDCTL1); 1415 reg_txdctl1 |= E1000_TXDCTL_COUNT_DESC; 1416 E1000_WRITE_REG(hw, TXDCTL1, reg_txdctl1); 1417 1418 switch (hw->mac_type) { 1419 case e1000_82571: 1420 case e1000_82572: 1421 /* Clear PHY TX compatible mode bits */ 1422 reg_tarc1 = E1000_READ_REG(hw, TARC1); 1423 reg_tarc1 &= ~((1 << 30)|(1 << 29)); 1424 1425 /* link autonegotiation/sync workarounds */ 1426 reg_tarc0 |= ((1 << 26)|(1 << 25)|(1 << 24)|(1 << 23)); 1427 1428 /* TX ring control fixes */ 1429 reg_tarc1 |= ((1 << 26)|(1 << 25)|(1 << 24)); 1430 1431 /* Multiple read bit is reversed polarity */ 1432 reg_tctl = E1000_READ_REG(hw, TCTL); 1433 if (reg_tctl & E1000_TCTL_MULR) 1434 reg_tarc1 &= ~(1 << 28); 1435 else 1436 reg_tarc1 |= (1 << 28); 1437 1438 E1000_WRITE_REG(hw, TARC1, reg_tarc1); 1439 break; 1440 case e1000_82573: 1441 reg_ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); 1442 reg_ctrl_ext &= ~(1 << 23); 1443 reg_ctrl_ext |= (1 << 22); 1444 1445 /* TX byte count fix */ 1446 reg_ctrl = E1000_READ_REG(hw, CTRL); 1447 reg_ctrl &= ~(1 << 29); 1448 1449 E1000_WRITE_REG(hw, CTRL_EXT, reg_ctrl_ext); 1450 E1000_WRITE_REG(hw, CTRL, reg_ctrl); 1451 break; 1452 case e1000_80003es2lan: 1453 /* improve small packet performace for fiber/serdes */ 1454 if ((hw->media_type == e1000_media_type_fiber) 1455 || (hw->media_type == 1456 e1000_media_type_internal_serdes)) { 1457 reg_tarc0 &= ~(1 << 20); 1458 } 1459 1460 /* Multiple read bit is reversed polarity */ 1461 reg_tctl = E1000_READ_REG(hw, TCTL); 1462 reg_tarc1 = E1000_READ_REG(hw, TARC1); 1463 if (reg_tctl & E1000_TCTL_MULR) 1464 reg_tarc1 &= ~(1 << 28); 1465 else 1466 reg_tarc1 |= (1 << 28); 1467 1468 E1000_WRITE_REG(hw, TARC1, reg_tarc1); 1469 break; 1470 case e1000_ich8lan: 1471 /* Reduce concurrent DMA requests to 3 from 4 */ 1472 if ((hw->revision_id < 3) || 1473 ((hw->device_id != E1000_DEV_ID_ICH8_IGP_M_AMT) && 1474 (hw->device_id != E1000_DEV_ID_ICH8_IGP_M))) 1475 reg_tarc0 |= ((1 << 29)|(1 << 28)); 1476 1477 reg_ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); 1478 reg_ctrl_ext |= (1 << 22); 1479 E1000_WRITE_REG(hw, CTRL_EXT, reg_ctrl_ext); 1480 1481 /* workaround TX hang with TSO=on */ 1482 reg_tarc0 |= ((1 << 27)|(1 << 26)|(1 << 24)|(1 << 23)); 1483 1484 /* Multiple read bit is reversed polarity */ 1485 reg_tctl = E1000_READ_REG(hw, TCTL); 1486 reg_tarc1 = E1000_READ_REG(hw, TARC1); 1487 if (reg_tctl & E1000_TCTL_MULR) 1488 reg_tarc1 &= ~(1 << 28); 1489 else 1490 reg_tarc1 |= (1 << 28); 1491 1492 /* workaround TX hang with TSO=on */ 1493 reg_tarc1 |= ((1 << 30)|(1 << 26)|(1 << 24)); 1494 1495 E1000_WRITE_REG(hw, TARC1, reg_tarc1); 1496 break; 1497 default: 1498 break; 1499 } 1500 1501 E1000_WRITE_REG(hw, TARC0, reg_tarc0); 1502 } 1503 } 1504 1505 /****************************************************************************** 1506 * Performs basic configuration of the adapter. 1507 * 1508 * hw - Struct containing variables accessed by shared code 1509 * 1510 * Assumes that the controller has previously been reset and is in a 1511 * post-reset uninitialized state. Initializes the receive address registers, 1512 * multicast table, and VLAN filter table. Calls routines to setup link 1513 * configuration and flow control settings. Clears all on-chip counters. Leaves 1514 * the transmit and receive units disabled and uninitialized. 1515 *****************************************************************************/ 1516 static int 1517 e1000_init_hw(struct eth_device *nic) 1518 { 1519 struct e1000_hw *hw = nic->priv; 1520 uint32_t ctrl; 1521 uint32_t i; 1522 int32_t ret_val; 1523 uint16_t pcix_cmd_word; 1524 uint16_t pcix_stat_hi_word; 1525 uint16_t cmd_mmrbc; 1526 uint16_t stat_mmrbc; 1527 uint32_t mta_size; 1528 uint32_t reg_data; 1529 uint32_t ctrl_ext; 1530 DEBUGFUNC(); 1531 /* force full DMA clock frequency for 10/100 on ICH8 A0-B0 */ 1532 if ((hw->mac_type == e1000_ich8lan) && 1533 ((hw->revision_id < 3) || 1534 ((hw->device_id != E1000_DEV_ID_ICH8_IGP_M_AMT) && 1535 (hw->device_id != E1000_DEV_ID_ICH8_IGP_M)))) { 1536 reg_data = E1000_READ_REG(hw, STATUS); 1537 reg_data &= ~0x80000000; 1538 E1000_WRITE_REG(hw, STATUS, reg_data); 1539 } 1540 /* Do not need initialize Identification LED */ 1541 1542 /* Set the media type and TBI compatibility */ 1543 e1000_set_media_type(hw); 1544 1545 /* Must be called after e1000_set_media_type 1546 * because media_type is used */ 1547 e1000_initialize_hardware_bits(hw); 1548 1549 /* Disabling VLAN filtering. */ 1550 DEBUGOUT("Initializing the IEEE VLAN\n"); 1551 /* VET hardcoded to standard value and VFTA removed in ICH8 LAN */ 1552 if (hw->mac_type != e1000_ich8lan) { 1553 if (hw->mac_type < e1000_82545_rev_3) 1554 E1000_WRITE_REG(hw, VET, 0); 1555 e1000_clear_vfta(hw); 1556 } 1557 1558 /* For 82542 (rev 2.0), disable MWI and put the receiver into reset */ 1559 if (hw->mac_type == e1000_82542_rev2_0) { 1560 DEBUGOUT("Disabling MWI on 82542 rev 2.0\n"); 1561 pci_write_config_word(hw->pdev, PCI_COMMAND, 1562 hw-> 1563 pci_cmd_word & ~PCI_COMMAND_INVALIDATE); 1564 E1000_WRITE_REG(hw, RCTL, E1000_RCTL_RST); 1565 E1000_WRITE_FLUSH(hw); 1566 mdelay(5); 1567 } 1568 1569 /* Setup the receive address. This involves initializing all of the Receive 1570 * Address Registers (RARs 0 - 15). 1571 */ 1572 e1000_init_rx_addrs(nic); 1573 1574 /* For 82542 (rev 2.0), take the receiver out of reset and enable MWI */ 1575 if (hw->mac_type == e1000_82542_rev2_0) { 1576 E1000_WRITE_REG(hw, RCTL, 0); 1577 E1000_WRITE_FLUSH(hw); 1578 mdelay(1); 1579 pci_write_config_word(hw->pdev, PCI_COMMAND, hw->pci_cmd_word); 1580 } 1581 1582 /* Zero out the Multicast HASH table */ 1583 DEBUGOUT("Zeroing the MTA\n"); 1584 mta_size = E1000_MC_TBL_SIZE; 1585 if (hw->mac_type == e1000_ich8lan) 1586 mta_size = E1000_MC_TBL_SIZE_ICH8LAN; 1587 for (i = 0; i < mta_size; i++) { 1588 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); 1589 /* use write flush to prevent Memory Write Block (MWB) from 1590 * occuring when accessing our register space */ 1591 E1000_WRITE_FLUSH(hw); 1592 } 1593 #if 0 1594 /* Set the PCI priority bit correctly in the CTRL register. This 1595 * determines if the adapter gives priority to receives, or if it 1596 * gives equal priority to transmits and receives. Valid only on 1597 * 82542 and 82543 silicon. 1598 */ 1599 if (hw->dma_fairness && hw->mac_type <= e1000_82543) { 1600 ctrl = E1000_READ_REG(hw, CTRL); 1601 E1000_WRITE_REG(hw, CTRL, ctrl | E1000_CTRL_PRIOR); 1602 } 1603 #endif 1604 switch (hw->mac_type) { 1605 case e1000_82545_rev_3: 1606 case e1000_82546_rev_3: 1607 break; 1608 default: 1609 /* Workaround for PCI-X problem when BIOS sets MMRBC incorrectly. */ 1610 if (hw->bus_type == e1000_bus_type_pcix) { 1611 pci_read_config_word(hw->pdev, PCIX_COMMAND_REGISTER, 1612 &pcix_cmd_word); 1613 pci_read_config_word(hw->pdev, PCIX_STATUS_REGISTER_HI, 1614 &pcix_stat_hi_word); 1615 cmd_mmrbc = 1616 (pcix_cmd_word & PCIX_COMMAND_MMRBC_MASK) >> 1617 PCIX_COMMAND_MMRBC_SHIFT; 1618 stat_mmrbc = 1619 (pcix_stat_hi_word & PCIX_STATUS_HI_MMRBC_MASK) >> 1620 PCIX_STATUS_HI_MMRBC_SHIFT; 1621 if (stat_mmrbc == PCIX_STATUS_HI_MMRBC_4K) 1622 stat_mmrbc = PCIX_STATUS_HI_MMRBC_2K; 1623 if (cmd_mmrbc > stat_mmrbc) { 1624 pcix_cmd_word &= ~PCIX_COMMAND_MMRBC_MASK; 1625 pcix_cmd_word |= stat_mmrbc << PCIX_COMMAND_MMRBC_SHIFT; 1626 pci_write_config_word(hw->pdev, PCIX_COMMAND_REGISTER, 1627 pcix_cmd_word); 1628 } 1629 } 1630 break; 1631 } 1632 1633 /* More time needed for PHY to initialize */ 1634 if (hw->mac_type == e1000_ich8lan) 1635 mdelay(15); 1636 1637 /* Call a subroutine to configure the link and setup flow control. */ 1638 ret_val = e1000_setup_link(nic); 1639 1640 /* Set the transmit descriptor write-back policy */ 1641 if (hw->mac_type > e1000_82544) { 1642 ctrl = E1000_READ_REG(hw, TXDCTL); 1643 ctrl = 1644 (ctrl & ~E1000_TXDCTL_WTHRESH) | 1645 E1000_TXDCTL_FULL_TX_DESC_WB; 1646 E1000_WRITE_REG(hw, TXDCTL, ctrl); 1647 } 1648 1649 switch (hw->mac_type) { 1650 default: 1651 break; 1652 case e1000_80003es2lan: 1653 /* Enable retransmit on late collisions */ 1654 reg_data = E1000_READ_REG(hw, TCTL); 1655 reg_data |= E1000_TCTL_RTLC; 1656 E1000_WRITE_REG(hw, TCTL, reg_data); 1657 1658 /* Configure Gigabit Carry Extend Padding */ 1659 reg_data = E1000_READ_REG(hw, TCTL_EXT); 1660 reg_data &= ~E1000_TCTL_EXT_GCEX_MASK; 1661 reg_data |= DEFAULT_80003ES2LAN_TCTL_EXT_GCEX; 1662 E1000_WRITE_REG(hw, TCTL_EXT, reg_data); 1663 1664 /* Configure Transmit Inter-Packet Gap */ 1665 reg_data = E1000_READ_REG(hw, TIPG); 1666 reg_data &= ~E1000_TIPG_IPGT_MASK; 1667 reg_data |= DEFAULT_80003ES2LAN_TIPG_IPGT_1000; 1668 E1000_WRITE_REG(hw, TIPG, reg_data); 1669 1670 reg_data = E1000_READ_REG_ARRAY(hw, FFLT, 0x0001); 1671 reg_data &= ~0x00100000; 1672 E1000_WRITE_REG_ARRAY(hw, FFLT, 0x0001, reg_data); 1673 /* Fall through */ 1674 case e1000_82571: 1675 case e1000_82572: 1676 case e1000_ich8lan: 1677 ctrl = E1000_READ_REG(hw, TXDCTL1); 1678 ctrl = (ctrl & ~E1000_TXDCTL_WTHRESH) 1679 | E1000_TXDCTL_FULL_TX_DESC_WB; 1680 E1000_WRITE_REG(hw, TXDCTL1, ctrl); 1681 break; 1682 } 1683 1684 if (hw->mac_type == e1000_82573) { 1685 uint32_t gcr = E1000_READ_REG(hw, GCR); 1686 gcr |= E1000_GCR_L1_ACT_WITHOUT_L0S_RX; 1687 E1000_WRITE_REG(hw, GCR, gcr); 1688 } 1689 1690 #if 0 1691 /* Clear all of the statistics registers (clear on read). It is 1692 * important that we do this after we have tried to establish link 1693 * because the symbol error count will increment wildly if there 1694 * is no link. 1695 */ 1696 e1000_clear_hw_cntrs(hw); 1697 1698 /* ICH8 No-snoop bits are opposite polarity. 1699 * Set to snoop by default after reset. */ 1700 if (hw->mac_type == e1000_ich8lan) 1701 e1000_set_pci_ex_no_snoop(hw, PCI_EX_82566_SNOOP_ALL); 1702 #endif 1703 1704 if (hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER || 1705 hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3) { 1706 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); 1707 /* Relaxed ordering must be disabled to avoid a parity 1708 * error crash in a PCI slot. */ 1709 ctrl_ext |= E1000_CTRL_EXT_RO_DIS; 1710 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); 1711 } 1712 1713 return ret_val; 1714 } 1715 1716 /****************************************************************************** 1717 * Configures flow control and link settings. 1718 * 1719 * hw - Struct containing variables accessed by shared code 1720 * 1721 * Determines which flow control settings to use. Calls the apropriate media- 1722 * specific link configuration function. Configures the flow control settings. 1723 * Assuming the adapter has a valid link partner, a valid link should be 1724 * established. Assumes the hardware has previously been reset and the 1725 * transmitter and receiver are not enabled. 1726 *****************************************************************************/ 1727 static int 1728 e1000_setup_link(struct eth_device *nic) 1729 { 1730 struct e1000_hw *hw = nic->priv; 1731 uint32_t ctrl_ext; 1732 int32_t ret_val; 1733 uint16_t eeprom_data; 1734 1735 DEBUGFUNC(); 1736 1737 /* In the case of the phy reset being blocked, we already have a link. 1738 * We do not have to set it up again. */ 1739 if (e1000_check_phy_reset_block(hw)) 1740 return E1000_SUCCESS; 1741 1742 #ifndef CONFIG_AP1000 1743 /* Read and store word 0x0F of the EEPROM. This word contains bits 1744 * that determine the hardware's default PAUSE (flow control) mode, 1745 * a bit that determines whether the HW defaults to enabling or 1746 * disabling auto-negotiation, and the direction of the 1747 * SW defined pins. If there is no SW over-ride of the flow 1748 * control setting, then the variable hw->fc will 1749 * be initialized based on a value in the EEPROM. 1750 */ 1751 if (e1000_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG, 1, 1752 &eeprom_data) < 0) { 1753 DEBUGOUT("EEPROM Read Error\n"); 1754 return -E1000_ERR_EEPROM; 1755 } 1756 #else 1757 /* we have to hardcode the proper value for our hardware. */ 1758 /* this value is for the 82540EM pci card used for prototyping, and it works. */ 1759 eeprom_data = 0xb220; 1760 #endif 1761 1762 if (hw->fc == e1000_fc_default) { 1763 switch (hw->mac_type) { 1764 case e1000_ich8lan: 1765 case e1000_82573: 1766 hw->fc = e1000_fc_full; 1767 break; 1768 default: 1769 #ifndef CONFIG_AP1000 1770 ret_val = e1000_read_eeprom(hw, 1771 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); 1772 if (ret_val) { 1773 DEBUGOUT("EEPROM Read Error\n"); 1774 return -E1000_ERR_EEPROM; 1775 } 1776 #else 1777 eeprom_data = 0xb220; 1778 #endif 1779 if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == 0) 1780 hw->fc = e1000_fc_none; 1781 else if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == 1782 EEPROM_WORD0F_ASM_DIR) 1783 hw->fc = e1000_fc_tx_pause; 1784 else 1785 hw->fc = e1000_fc_full; 1786 break; 1787 } 1788 } 1789 1790 /* We want to save off the original Flow Control configuration just 1791 * in case we get disconnected and then reconnected into a different 1792 * hub or switch with different Flow Control capabilities. 1793 */ 1794 if (hw->mac_type == e1000_82542_rev2_0) 1795 hw->fc &= (~e1000_fc_tx_pause); 1796 1797 if ((hw->mac_type < e1000_82543) && (hw->report_tx_early == 1)) 1798 hw->fc &= (~e1000_fc_rx_pause); 1799 1800 hw->original_fc = hw->fc; 1801 1802 DEBUGOUT("After fix-ups FlowControl is now = %x\n", hw->fc); 1803 1804 /* Take the 4 bits from EEPROM word 0x0F that determine the initial 1805 * polarity value for the SW controlled pins, and setup the 1806 * Extended Device Control reg with that info. 1807 * This is needed because one of the SW controlled pins is used for 1808 * signal detection. So this should be done before e1000_setup_pcs_link() 1809 * or e1000_phy_setup() is called. 1810 */ 1811 if (hw->mac_type == e1000_82543) { 1812 ctrl_ext = ((eeprom_data & EEPROM_WORD0F_SWPDIO_EXT) << 1813 SWDPIO__EXT_SHIFT); 1814 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); 1815 } 1816 1817 /* Call the necessary subroutine to configure the link. */ 1818 ret_val = (hw->media_type == e1000_media_type_fiber) ? 1819 e1000_setup_fiber_link(nic) : e1000_setup_copper_link(nic); 1820 if (ret_val < 0) { 1821 return ret_val; 1822 } 1823 1824 /* Initialize the flow control address, type, and PAUSE timer 1825 * registers to their default values. This is done even if flow 1826 * control is disabled, because it does not hurt anything to 1827 * initialize these registers. 1828 */ 1829 DEBUGOUT("Initializing the Flow Control address, type" 1830 "and timer regs\n"); 1831 1832 /* FCAL/H and FCT are hardcoded to standard values in e1000_ich8lan. */ 1833 if (hw->mac_type != e1000_ich8lan) { 1834 E1000_WRITE_REG(hw, FCT, FLOW_CONTROL_TYPE); 1835 E1000_WRITE_REG(hw, FCAH, FLOW_CONTROL_ADDRESS_HIGH); 1836 E1000_WRITE_REG(hw, FCAL, FLOW_CONTROL_ADDRESS_LOW); 1837 } 1838 1839 E1000_WRITE_REG(hw, FCTTV, hw->fc_pause_time); 1840 1841 /* Set the flow control receive threshold registers. Normally, 1842 * these registers will be set to a default threshold that may be 1843 * adjusted later by the driver's runtime code. However, if the 1844 * ability to transmit pause frames in not enabled, then these 1845 * registers will be set to 0. 1846 */ 1847 if (!(hw->fc & e1000_fc_tx_pause)) { 1848 E1000_WRITE_REG(hw, FCRTL, 0); 1849 E1000_WRITE_REG(hw, FCRTH, 0); 1850 } else { 1851 /* We need to set up the Receive Threshold high and low water marks 1852 * as well as (optionally) enabling the transmission of XON frames. 1853 */ 1854 if (hw->fc_send_xon) { 1855 E1000_WRITE_REG(hw, FCRTL, 1856 (hw->fc_low_water | E1000_FCRTL_XONE)); 1857 E1000_WRITE_REG(hw, FCRTH, hw->fc_high_water); 1858 } else { 1859 E1000_WRITE_REG(hw, FCRTL, hw->fc_low_water); 1860 E1000_WRITE_REG(hw, FCRTH, hw->fc_high_water); 1861 } 1862 } 1863 return ret_val; 1864 } 1865 1866 /****************************************************************************** 1867 * Sets up link for a fiber based adapter 1868 * 1869 * hw - Struct containing variables accessed by shared code 1870 * 1871 * Manipulates Physical Coding Sublayer functions in order to configure 1872 * link. Assumes the hardware has been previously reset and the transmitter 1873 * and receiver are not enabled. 1874 *****************************************************************************/ 1875 static int 1876 e1000_setup_fiber_link(struct eth_device *nic) 1877 { 1878 struct e1000_hw *hw = nic->priv; 1879 uint32_t ctrl; 1880 uint32_t status; 1881 uint32_t txcw = 0; 1882 uint32_t i; 1883 uint32_t signal; 1884 int32_t ret_val; 1885 1886 DEBUGFUNC(); 1887 /* On adapters with a MAC newer that 82544, SW Defineable pin 1 will be 1888 * set when the optics detect a signal. On older adapters, it will be 1889 * cleared when there is a signal 1890 */ 1891 ctrl = E1000_READ_REG(hw, CTRL); 1892 if ((hw->mac_type > e1000_82544) && !(ctrl & E1000_CTRL_ILOS)) 1893 signal = E1000_CTRL_SWDPIN1; 1894 else 1895 signal = 0; 1896 1897 printf("signal for %s is %x (ctrl %08x)!!!!\n", nic->name, signal, 1898 ctrl); 1899 /* Take the link out of reset */ 1900 ctrl &= ~(E1000_CTRL_LRST); 1901 1902 e1000_config_collision_dist(hw); 1903 1904 /* Check for a software override of the flow control settings, and setup 1905 * the device accordingly. If auto-negotiation is enabled, then software 1906 * will have to set the "PAUSE" bits to the correct value in the Tranmsit 1907 * Config Word Register (TXCW) and re-start auto-negotiation. However, if 1908 * auto-negotiation is disabled, then software will have to manually 1909 * configure the two flow control enable bits in the CTRL register. 1910 * 1911 * The possible values of the "fc" parameter are: 1912 * 0: Flow control is completely disabled 1913 * 1: Rx flow control is enabled (we can receive pause frames, but 1914 * not send pause frames). 1915 * 2: Tx flow control is enabled (we can send pause frames but we do 1916 * not support receiving pause frames). 1917 * 3: Both Rx and TX flow control (symmetric) are enabled. 1918 */ 1919 switch (hw->fc) { 1920 case e1000_fc_none: 1921 /* Flow control is completely disabled by a software over-ride. */ 1922 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD); 1923 break; 1924 case e1000_fc_rx_pause: 1925 /* RX Flow control is enabled and TX Flow control is disabled by a 1926 * software over-ride. Since there really isn't a way to advertise 1927 * that we are capable of RX Pause ONLY, we will advertise that we 1928 * support both symmetric and asymmetric RX PAUSE. Later, we will 1929 * disable the adapter's ability to send PAUSE frames. 1930 */ 1931 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK); 1932 break; 1933 case e1000_fc_tx_pause: 1934 /* TX Flow control is enabled, and RX Flow control is disabled, by a 1935 * software over-ride. 1936 */ 1937 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_ASM_DIR); 1938 break; 1939 case e1000_fc_full: 1940 /* Flow control (both RX and TX) is enabled by a software over-ride. */ 1941 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK); 1942 break; 1943 default: 1944 DEBUGOUT("Flow control param set incorrectly\n"); 1945 return -E1000_ERR_CONFIG; 1946 break; 1947 } 1948 1949 /* Since auto-negotiation is enabled, take the link out of reset (the link 1950 * will be in reset, because we previously reset the chip). This will 1951 * restart auto-negotiation. If auto-neogtiation is successful then the 1952 * link-up status bit will be set and the flow control enable bits (RFCE 1953 * and TFCE) will be set according to their negotiated value. 1954 */ 1955 DEBUGOUT("Auto-negotiation enabled (%#x)\n", txcw); 1956 1957 E1000_WRITE_REG(hw, TXCW, txcw); 1958 E1000_WRITE_REG(hw, CTRL, ctrl); 1959 E1000_WRITE_FLUSH(hw); 1960 1961 hw->txcw = txcw; 1962 mdelay(1); 1963 1964 /* If we have a signal (the cable is plugged in) then poll for a "Link-Up" 1965 * indication in the Device Status Register. Time-out if a link isn't 1966 * seen in 500 milliseconds seconds (Auto-negotiation should complete in 1967 * less than 500 milliseconds even if the other end is doing it in SW). 1968 */ 1969 if ((E1000_READ_REG(hw, CTRL) & E1000_CTRL_SWDPIN1) == signal) { 1970 DEBUGOUT("Looking for Link\n"); 1971 for (i = 0; i < (LINK_UP_TIMEOUT / 10); i++) { 1972 mdelay(10); 1973 status = E1000_READ_REG(hw, STATUS); 1974 if (status & E1000_STATUS_LU) 1975 break; 1976 } 1977 if (i == (LINK_UP_TIMEOUT / 10)) { 1978 /* AutoNeg failed to achieve a link, so we'll call 1979 * e1000_check_for_link. This routine will force the link up if we 1980 * detect a signal. This will allow us to communicate with 1981 * non-autonegotiating link partners. 1982 */ 1983 DEBUGOUT("Never got a valid link from auto-neg!!!\n"); 1984 hw->autoneg_failed = 1; 1985 ret_val = e1000_check_for_link(nic); 1986 if (ret_val < 0) { 1987 DEBUGOUT("Error while checking for link\n"); 1988 return ret_val; 1989 } 1990 hw->autoneg_failed = 0; 1991 } else { 1992 hw->autoneg_failed = 0; 1993 DEBUGOUT("Valid Link Found\n"); 1994 } 1995 } else { 1996 DEBUGOUT("No Signal Detected\n"); 1997 return -E1000_ERR_NOLINK; 1998 } 1999 return 0; 2000 } 2001 2002 /***************************************************************************** 2003 * Set PHY to class A mode 2004 * Assumes the following operations will follow to enable the new class mode. 2005 * 1. Do a PHY soft reset 2006 * 2. Restart auto-negotiation or force link. 2007 * 2008 * hw - Struct containing variables accessed by shared code 2009 ****************************************************************************/ 2010 static int32_t 2011 e1000_set_phy_mode(struct e1000_hw *hw) 2012 { 2013 int32_t ret_val; 2014 uint16_t eeprom_data; 2015 2016 DEBUGFUNC(); 2017 2018 if ((hw->mac_type == e1000_82545_rev_3) && 2019 (hw->media_type == e1000_media_type_copper)) { 2020 ret_val = e1000_read_eeprom(hw, EEPROM_PHY_CLASS_WORD, 2021 1, &eeprom_data); 2022 if (ret_val) 2023 return ret_val; 2024 2025 if ((eeprom_data != EEPROM_RESERVED_WORD) && 2026 (eeprom_data & EEPROM_PHY_CLASS_A)) { 2027 ret_val = e1000_write_phy_reg(hw, 2028 M88E1000_PHY_PAGE_SELECT, 0x000B); 2029 if (ret_val) 2030 return ret_val; 2031 ret_val = e1000_write_phy_reg(hw, 2032 M88E1000_PHY_GEN_CONTROL, 0x8104); 2033 if (ret_val) 2034 return ret_val; 2035 2036 hw->phy_reset_disable = FALSE; 2037 } 2038 } 2039 2040 return E1000_SUCCESS; 2041 } 2042 2043 /****************************************************************************** 2044 * Make sure we have a valid PHY and change PHY mode before link setup. 2045 * 2046 * hw - Struct containing variables accessed by shared code 2047 ******************************************************************************/ 2048 static int32_t 2049 e1000_copper_link_preconfig(struct e1000_hw *hw) 2050 { 2051 uint32_t ctrl; 2052 int32_t ret_val; 2053 uint16_t phy_data; 2054 2055 DEBUGFUNC(); 2056 2057 ctrl = E1000_READ_REG(hw, CTRL); 2058 /* With 82543, we need to force speed and duplex on the MAC equal to what 2059 * the PHY speed and duplex configuration is. In addition, we need to 2060 * perform a hardware reset on the PHY to take it out of reset. 2061 */ 2062 if (hw->mac_type > e1000_82543) { 2063 ctrl |= E1000_CTRL_SLU; 2064 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); 2065 E1000_WRITE_REG(hw, CTRL, ctrl); 2066 } else { 2067 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX 2068 | E1000_CTRL_SLU); 2069 E1000_WRITE_REG(hw, CTRL, ctrl); 2070 ret_val = e1000_phy_hw_reset(hw); 2071 if (ret_val) 2072 return ret_val; 2073 } 2074 2075 /* Make sure we have a valid PHY */ 2076 ret_val = e1000_detect_gig_phy(hw); 2077 if (ret_val) { 2078 DEBUGOUT("Error, did not detect valid phy.\n"); 2079 return ret_val; 2080 } 2081 DEBUGOUT("Phy ID = %x \n", hw->phy_id); 2082 2083 #ifndef CONFIG_AP1000 2084 /* Set PHY to class A mode (if necessary) */ 2085 ret_val = e1000_set_phy_mode(hw); 2086 if (ret_val) 2087 return ret_val; 2088 #endif 2089 if ((hw->mac_type == e1000_82545_rev_3) || 2090 (hw->mac_type == e1000_82546_rev_3)) { 2091 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, 2092 &phy_data); 2093 phy_data |= 0x00000008; 2094 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, 2095 phy_data); 2096 } 2097 2098 if (hw->mac_type <= e1000_82543 || 2099 hw->mac_type == e1000_82541 || hw->mac_type == e1000_82547 || 2100 hw->mac_type == e1000_82541_rev_2 2101 || hw->mac_type == e1000_82547_rev_2) 2102 hw->phy_reset_disable = FALSE; 2103 2104 return E1000_SUCCESS; 2105 } 2106 2107 /***************************************************************************** 2108 * 2109 * This function sets the lplu state according to the active flag. When 2110 * activating lplu this function also disables smart speed and vise versa. 2111 * lplu will not be activated unless the device autonegotiation advertisment 2112 * meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes. 2113 * hw: Struct containing variables accessed by shared code 2114 * active - true to enable lplu false to disable lplu. 2115 * 2116 * returns: - E1000_ERR_PHY if fail to read/write the PHY 2117 * E1000_SUCCESS at any other case. 2118 * 2119 ****************************************************************************/ 2120 2121 static int32_t 2122 e1000_set_d3_lplu_state(struct e1000_hw *hw, boolean_t active) 2123 { 2124 uint32_t phy_ctrl = 0; 2125 int32_t ret_val; 2126 uint16_t phy_data; 2127 DEBUGFUNC(); 2128 2129 if (hw->phy_type != e1000_phy_igp && hw->phy_type != e1000_phy_igp_2 2130 && hw->phy_type != e1000_phy_igp_3) 2131 return E1000_SUCCESS; 2132 2133 /* During driver activity LPLU should not be used or it will attain link 2134 * from the lowest speeds starting from 10Mbps. The capability is used 2135 * for Dx transitions and states */ 2136 if (hw->mac_type == e1000_82541_rev_2 2137 || hw->mac_type == e1000_82547_rev_2) { 2138 ret_val = e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO, 2139 &phy_data); 2140 if (ret_val) 2141 return ret_val; 2142 } else if (hw->mac_type == e1000_ich8lan) { 2143 /* MAC writes into PHY register based on the state transition 2144 * and start auto-negotiation. SW driver can overwrite the 2145 * settings in CSR PHY power control E1000_PHY_CTRL register. */ 2146 phy_ctrl = E1000_READ_REG(hw, PHY_CTRL); 2147 } else { 2148 ret_val = e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, 2149 &phy_data); 2150 if (ret_val) 2151 return ret_val; 2152 } 2153 2154 if (!active) { 2155 if (hw->mac_type == e1000_82541_rev_2 || 2156 hw->mac_type == e1000_82547_rev_2) { 2157 phy_data &= ~IGP01E1000_GMII_FLEX_SPD; 2158 ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO, 2159 phy_data); 2160 if (ret_val) 2161 return ret_val; 2162 } else { 2163 if (hw->mac_type == e1000_ich8lan) { 2164 phy_ctrl &= ~E1000_PHY_CTRL_NOND0A_LPLU; 2165 E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl); 2166 } else { 2167 phy_data &= ~IGP02E1000_PM_D3_LPLU; 2168 ret_val = e1000_write_phy_reg(hw, 2169 IGP02E1000_PHY_POWER_MGMT, phy_data); 2170 if (ret_val) 2171 return ret_val; 2172 } 2173 } 2174 2175 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used during 2176 * Dx states where the power conservation is most important. During 2177 * driver activity we should enable SmartSpeed, so performance is 2178 * maintained. */ 2179 if (hw->smart_speed == e1000_smart_speed_on) { 2180 ret_val = e1000_read_phy_reg(hw, 2181 IGP01E1000_PHY_PORT_CONFIG, &phy_data); 2182 if (ret_val) 2183 return ret_val; 2184 2185 phy_data |= IGP01E1000_PSCFR_SMART_SPEED; 2186 ret_val = e1000_write_phy_reg(hw, 2187 IGP01E1000_PHY_PORT_CONFIG, phy_data); 2188 if (ret_val) 2189 return ret_val; 2190 } else if (hw->smart_speed == e1000_smart_speed_off) { 2191 ret_val = e1000_read_phy_reg(hw, 2192 IGP01E1000_PHY_PORT_CONFIG, &phy_data); 2193 if (ret_val) 2194 return ret_val; 2195 2196 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; 2197 ret_val = e1000_write_phy_reg(hw, 2198 IGP01E1000_PHY_PORT_CONFIG, phy_data); 2199 if (ret_val) 2200 return ret_val; 2201 } 2202 2203 } else if ((hw->autoneg_advertised == AUTONEG_ADVERTISE_SPEED_DEFAULT) 2204 || (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_ALL) || 2205 (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_100_ALL)) { 2206 2207 if (hw->mac_type == e1000_82541_rev_2 || 2208 hw->mac_type == e1000_82547_rev_2) { 2209 phy_data |= IGP01E1000_GMII_FLEX_SPD; 2210 ret_val = e1000_write_phy_reg(hw, 2211 IGP01E1000_GMII_FIFO, phy_data); 2212 if (ret_val) 2213 return ret_val; 2214 } else { 2215 if (hw->mac_type == e1000_ich8lan) { 2216 phy_ctrl |= E1000_PHY_CTRL_NOND0A_LPLU; 2217 E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl); 2218 } else { 2219 phy_data |= IGP02E1000_PM_D3_LPLU; 2220 ret_val = e1000_write_phy_reg(hw, 2221 IGP02E1000_PHY_POWER_MGMT, phy_data); 2222 if (ret_val) 2223 return ret_val; 2224 } 2225 } 2226 2227 /* When LPLU is enabled we should disable SmartSpeed */ 2228 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, 2229 &phy_data); 2230 if (ret_val) 2231 return ret_val; 2232 2233 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; 2234 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, 2235 phy_data); 2236 if (ret_val) 2237 return ret_val; 2238 } 2239 return E1000_SUCCESS; 2240 } 2241 2242 /***************************************************************************** 2243 * 2244 * This function sets the lplu d0 state according to the active flag. When 2245 * activating lplu this function also disables smart speed and vise versa. 2246 * lplu will not be activated unless the device autonegotiation advertisment 2247 * meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes. 2248 * hw: Struct containing variables accessed by shared code 2249 * active - true to enable lplu false to disable lplu. 2250 * 2251 * returns: - E1000_ERR_PHY if fail to read/write the PHY 2252 * E1000_SUCCESS at any other case. 2253 * 2254 ****************************************************************************/ 2255 2256 static int32_t 2257 e1000_set_d0_lplu_state(struct e1000_hw *hw, boolean_t active) 2258 { 2259 uint32_t phy_ctrl = 0; 2260 int32_t ret_val; 2261 uint16_t phy_data; 2262 DEBUGFUNC(); 2263 2264 if (hw->mac_type <= e1000_82547_rev_2) 2265 return E1000_SUCCESS; 2266 2267 if (hw->mac_type == e1000_ich8lan) { 2268 phy_ctrl = E1000_READ_REG(hw, PHY_CTRL); 2269 } else { 2270 ret_val = e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, 2271 &phy_data); 2272 if (ret_val) 2273 return ret_val; 2274 } 2275 2276 if (!active) { 2277 if (hw->mac_type == e1000_ich8lan) { 2278 phy_ctrl &= ~E1000_PHY_CTRL_D0A_LPLU; 2279 E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl); 2280 } else { 2281 phy_data &= ~IGP02E1000_PM_D0_LPLU; 2282 ret_val = e1000_write_phy_reg(hw, 2283 IGP02E1000_PHY_POWER_MGMT, phy_data); 2284 if (ret_val) 2285 return ret_val; 2286 } 2287 2288 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used during 2289 * Dx states where the power conservation is most important. During 2290 * driver activity we should enable SmartSpeed, so performance is 2291 * maintained. */ 2292 if (hw->smart_speed == e1000_smart_speed_on) { 2293 ret_val = e1000_read_phy_reg(hw, 2294 IGP01E1000_PHY_PORT_CONFIG, &phy_data); 2295 if (ret_val) 2296 return ret_val; 2297 2298 phy_data |= IGP01E1000_PSCFR_SMART_SPEED; 2299 ret_val = e1000_write_phy_reg(hw, 2300 IGP01E1000_PHY_PORT_CONFIG, phy_data); 2301 if (ret_val) 2302 return ret_val; 2303 } else if (hw->smart_speed == e1000_smart_speed_off) { 2304 ret_val = e1000_read_phy_reg(hw, 2305 IGP01E1000_PHY_PORT_CONFIG, &phy_data); 2306 if (ret_val) 2307 return ret_val; 2308 2309 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; 2310 ret_val = e1000_write_phy_reg(hw, 2311 IGP01E1000_PHY_PORT_CONFIG, phy_data); 2312 if (ret_val) 2313 return ret_val; 2314 } 2315 2316 2317 } else { 2318 2319 if (hw->mac_type == e1000_ich8lan) { 2320 phy_ctrl |= E1000_PHY_CTRL_D0A_LPLU; 2321 E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl); 2322 } else { 2323 phy_data |= IGP02E1000_PM_D0_LPLU; 2324 ret_val = e1000_write_phy_reg(hw, 2325 IGP02E1000_PHY_POWER_MGMT, phy_data); 2326 if (ret_val) 2327 return ret_val; 2328 } 2329 2330 /* When LPLU is enabled we should disable SmartSpeed */ 2331 ret_val = e1000_read_phy_reg(hw, 2332 IGP01E1000_PHY_PORT_CONFIG, &phy_data); 2333 if (ret_val) 2334 return ret_val; 2335 2336 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; 2337 ret_val = e1000_write_phy_reg(hw, 2338 IGP01E1000_PHY_PORT_CONFIG, phy_data); 2339 if (ret_val) 2340 return ret_val; 2341 2342 } 2343 return E1000_SUCCESS; 2344 } 2345 2346 /******************************************************************** 2347 * Copper link setup for e1000_phy_igp series. 2348 * 2349 * hw - Struct containing variables accessed by shared code 2350 *********************************************************************/ 2351 static int32_t 2352 e1000_copper_link_igp_setup(struct e1000_hw *hw) 2353 { 2354 uint32_t led_ctrl; 2355 int32_t ret_val; 2356 uint16_t phy_data; 2357 2358 DEBUGOUT(); 2359 2360 if (hw->phy_reset_disable) 2361 return E1000_SUCCESS; 2362 2363 ret_val = e1000_phy_reset(hw); 2364 if (ret_val) { 2365 DEBUGOUT("Error Resetting the PHY\n"); 2366 return ret_val; 2367 } 2368 2369 /* Wait 15ms for MAC to configure PHY from eeprom settings */ 2370 mdelay(15); 2371 if (hw->mac_type != e1000_ich8lan) { 2372 /* Configure activity LED after PHY reset */ 2373 led_ctrl = E1000_READ_REG(hw, LEDCTL); 2374 led_ctrl &= IGP_ACTIVITY_LED_MASK; 2375 led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE); 2376 E1000_WRITE_REG(hw, LEDCTL, led_ctrl); 2377 } 2378 2379 /* The NVM settings will configure LPLU in D3 for IGP2 and IGP3 PHYs */ 2380 if (hw->phy_type == e1000_phy_igp) { 2381 /* disable lplu d3 during driver init */ 2382 ret_val = e1000_set_d3_lplu_state(hw, FALSE); 2383 if (ret_val) { 2384 DEBUGOUT("Error Disabling LPLU D3\n"); 2385 return ret_val; 2386 } 2387 } 2388 2389 /* disable lplu d0 during driver init */ 2390 ret_val = e1000_set_d0_lplu_state(hw, FALSE); 2391 if (ret_val) { 2392 DEBUGOUT("Error Disabling LPLU D0\n"); 2393 return ret_val; 2394 } 2395 /* Configure mdi-mdix settings */ 2396 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data); 2397 if (ret_val) 2398 return ret_val; 2399 2400 if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) { 2401 hw->dsp_config_state = e1000_dsp_config_disabled; 2402 /* Force MDI for earlier revs of the IGP PHY */ 2403 phy_data &= ~(IGP01E1000_PSCR_AUTO_MDIX 2404 | IGP01E1000_PSCR_FORCE_MDI_MDIX); 2405 hw->mdix = 1; 2406 2407 } else { 2408 hw->dsp_config_state = e1000_dsp_config_enabled; 2409 phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX; 2410 2411 switch (hw->mdix) { 2412 case 1: 2413 phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX; 2414 break; 2415 case 2: 2416 phy_data |= IGP01E1000_PSCR_FORCE_MDI_MDIX; 2417 break; 2418 case 0: 2419 default: 2420 phy_data |= IGP01E1000_PSCR_AUTO_MDIX; 2421 break; 2422 } 2423 } 2424 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data); 2425 if (ret_val) 2426 return ret_val; 2427 2428 /* set auto-master slave resolution settings */ 2429 if (hw->autoneg) { 2430 e1000_ms_type phy_ms_setting = hw->master_slave; 2431 2432 if (hw->ffe_config_state == e1000_ffe_config_active) 2433 hw->ffe_config_state = e1000_ffe_config_enabled; 2434 2435 if (hw->dsp_config_state == e1000_dsp_config_activated) 2436 hw->dsp_config_state = e1000_dsp_config_enabled; 2437 2438 /* when autonegotiation advertisment is only 1000Mbps then we 2439 * should disable SmartSpeed and enable Auto MasterSlave 2440 * resolution as hardware default. */ 2441 if (hw->autoneg_advertised == ADVERTISE_1000_FULL) { 2442 /* Disable SmartSpeed */ 2443 ret_val = e1000_read_phy_reg(hw, 2444 IGP01E1000_PHY_PORT_CONFIG, &phy_data); 2445 if (ret_val) 2446 return ret_val; 2447 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; 2448 ret_val = e1000_write_phy_reg(hw, 2449 IGP01E1000_PHY_PORT_CONFIG, phy_data); 2450 if (ret_val) 2451 return ret_val; 2452 /* Set auto Master/Slave resolution process */ 2453 ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, 2454 &phy_data); 2455 if (ret_val) 2456 return ret_val; 2457 phy_data &= ~CR_1000T_MS_ENABLE; 2458 ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, 2459 phy_data); 2460 if (ret_val) 2461 return ret_val; 2462 } 2463 2464 ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data); 2465 if (ret_val) 2466 return ret_val; 2467 2468 /* load defaults for future use */ 2469 hw->original_master_slave = (phy_data & CR_1000T_MS_ENABLE) ? 2470 ((phy_data & CR_1000T_MS_VALUE) ? 2471 e1000_ms_force_master : 2472 e1000_ms_force_slave) : 2473 e1000_ms_auto; 2474 2475 switch (phy_ms_setting) { 2476 case e1000_ms_force_master: 2477 phy_data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE); 2478 break; 2479 case e1000_ms_force_slave: 2480 phy_data |= CR_1000T_MS_ENABLE; 2481 phy_data &= ~(CR_1000T_MS_VALUE); 2482 break; 2483 case e1000_ms_auto: 2484 phy_data &= ~CR_1000T_MS_ENABLE; 2485 default: 2486 break; 2487 } 2488 ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data); 2489 if (ret_val) 2490 return ret_val; 2491 } 2492 2493 return E1000_SUCCESS; 2494 } 2495 2496 /***************************************************************************** 2497 * This function checks the mode of the firmware. 2498 * 2499 * returns - TRUE when the mode is IAMT or FALSE. 2500 ****************************************************************************/ 2501 boolean_t 2502 e1000_check_mng_mode(struct e1000_hw *hw) 2503 { 2504 uint32_t fwsm; 2505 DEBUGFUNC(); 2506 2507 fwsm = E1000_READ_REG(hw, FWSM); 2508 2509 if (hw->mac_type == e1000_ich8lan) { 2510 if ((fwsm & E1000_FWSM_MODE_MASK) == 2511 (E1000_MNG_ICH_IAMT_MODE << E1000_FWSM_MODE_SHIFT)) 2512 return TRUE; 2513 } else if ((fwsm & E1000_FWSM_MODE_MASK) == 2514 (E1000_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT)) 2515 return TRUE; 2516 2517 return FALSE; 2518 } 2519 2520 static int32_t 2521 e1000_write_kmrn_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t data) 2522 { 2523 uint32_t reg_val; 2524 uint16_t swfw; 2525 DEBUGFUNC(); 2526 2527 if ((hw->mac_type == e1000_80003es2lan) && 2528 (E1000_READ_REG(hw, STATUS) & E1000_STATUS_FUNC_1)) { 2529 swfw = E1000_SWFW_PHY1_SM; 2530 } else { 2531 swfw = E1000_SWFW_PHY0_SM; 2532 } 2533 if (e1000_swfw_sync_acquire(hw, swfw)) 2534 return -E1000_ERR_SWFW_SYNC; 2535 2536 reg_val = ((reg_addr << E1000_KUMCTRLSTA_OFFSET_SHIFT) 2537 & E1000_KUMCTRLSTA_OFFSET) | data; 2538 E1000_WRITE_REG(hw, KUMCTRLSTA, reg_val); 2539 udelay(2); 2540 2541 return E1000_SUCCESS; 2542 } 2543 2544 static int32_t 2545 e1000_read_kmrn_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t *data) 2546 { 2547 uint32_t reg_val; 2548 uint16_t swfw; 2549 DEBUGFUNC(); 2550 2551 if ((hw->mac_type == e1000_80003es2lan) && 2552 (E1000_READ_REG(hw, STATUS) & E1000_STATUS_FUNC_1)) { 2553 swfw = E1000_SWFW_PHY1_SM; 2554 } else { 2555 swfw = E1000_SWFW_PHY0_SM; 2556 } 2557 if (e1000_swfw_sync_acquire(hw, swfw)) 2558 return -E1000_ERR_SWFW_SYNC; 2559 2560 /* Write register address */ 2561 reg_val = ((reg_addr << E1000_KUMCTRLSTA_OFFSET_SHIFT) & 2562 E1000_KUMCTRLSTA_OFFSET) | E1000_KUMCTRLSTA_REN; 2563 E1000_WRITE_REG(hw, KUMCTRLSTA, reg_val); 2564 udelay(2); 2565 2566 /* Read the data returned */ 2567 reg_val = E1000_READ_REG(hw, KUMCTRLSTA); 2568 *data = (uint16_t)reg_val; 2569 2570 return E1000_SUCCESS; 2571 } 2572 2573 /******************************************************************** 2574 * Copper link setup for e1000_phy_gg82563 series. 2575 * 2576 * hw - Struct containing variables accessed by shared code 2577 *********************************************************************/ 2578 static int32_t 2579 e1000_copper_link_ggp_setup(struct e1000_hw *hw) 2580 { 2581 int32_t ret_val; 2582 uint16_t phy_data; 2583 uint32_t reg_data; 2584 2585 DEBUGFUNC(); 2586 2587 if (!hw->phy_reset_disable) { 2588 /* Enable CRS on TX for half-duplex operation. */ 2589 ret_val = e1000_read_phy_reg(hw, 2590 GG82563_PHY_MAC_SPEC_CTRL, &phy_data); 2591 if (ret_val) 2592 return ret_val; 2593 2594 phy_data |= GG82563_MSCR_ASSERT_CRS_ON_TX; 2595 /* Use 25MHz for both link down and 1000BASE-T for Tx clock */ 2596 phy_data |= GG82563_MSCR_TX_CLK_1000MBPS_25MHZ; 2597 2598 ret_val = e1000_write_phy_reg(hw, 2599 GG82563_PHY_MAC_SPEC_CTRL, phy_data); 2600 if (ret_val) 2601 return ret_val; 2602 2603 /* Options: 2604 * MDI/MDI-X = 0 (default) 2605 * 0 - Auto for all speeds 2606 * 1 - MDI mode 2607 * 2 - MDI-X mode 2608 * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes) 2609 */ 2610 ret_val = e1000_read_phy_reg(hw, 2611 GG82563_PHY_SPEC_CTRL, &phy_data); 2612 if (ret_val) 2613 return ret_val; 2614 2615 phy_data &= ~GG82563_PSCR_CROSSOVER_MODE_MASK; 2616 2617 switch (hw->mdix) { 2618 case 1: 2619 phy_data |= GG82563_PSCR_CROSSOVER_MODE_MDI; 2620 break; 2621 case 2: 2622 phy_data |= GG82563_PSCR_CROSSOVER_MODE_MDIX; 2623 break; 2624 case 0: 2625 default: 2626 phy_data |= GG82563_PSCR_CROSSOVER_MODE_AUTO; 2627 break; 2628 } 2629 2630 /* Options: 2631 * disable_polarity_correction = 0 (default) 2632 * Automatic Correction for Reversed Cable Polarity 2633 * 0 - Disabled 2634 * 1 - Enabled 2635 */ 2636 phy_data &= ~GG82563_PSCR_POLARITY_REVERSAL_DISABLE; 2637 ret_val = e1000_write_phy_reg(hw, 2638 GG82563_PHY_SPEC_CTRL, phy_data); 2639 2640 if (ret_val) 2641 return ret_val; 2642 2643 /* SW Reset the PHY so all changes take effect */ 2644 ret_val = e1000_phy_reset(hw); 2645 if (ret_val) { 2646 DEBUGOUT("Error Resetting the PHY\n"); 2647 return ret_val; 2648 } 2649 } /* phy_reset_disable */ 2650 2651 if (hw->mac_type == e1000_80003es2lan) { 2652 /* Bypass RX and TX FIFO's */ 2653 ret_val = e1000_write_kmrn_reg(hw, 2654 E1000_KUMCTRLSTA_OFFSET_FIFO_CTRL, 2655 E1000_KUMCTRLSTA_FIFO_CTRL_RX_BYPASS 2656 | E1000_KUMCTRLSTA_FIFO_CTRL_TX_BYPASS); 2657 if (ret_val) 2658 return ret_val; 2659 2660 ret_val = e1000_read_phy_reg(hw, 2661 GG82563_PHY_SPEC_CTRL_2, &phy_data); 2662 if (ret_val) 2663 return ret_val; 2664 2665 phy_data &= ~GG82563_PSCR2_REVERSE_AUTO_NEG; 2666 ret_val = e1000_write_phy_reg(hw, 2667 GG82563_PHY_SPEC_CTRL_2, phy_data); 2668 2669 if (ret_val) 2670 return ret_val; 2671 2672 reg_data = E1000_READ_REG(hw, CTRL_EXT); 2673 reg_data &= ~(E1000_CTRL_EXT_LINK_MODE_MASK); 2674 E1000_WRITE_REG(hw, CTRL_EXT, reg_data); 2675 2676 ret_val = e1000_read_phy_reg(hw, 2677 GG82563_PHY_PWR_MGMT_CTRL, &phy_data); 2678 if (ret_val) 2679 return ret_val; 2680 2681 /* Do not init these registers when the HW is in IAMT mode, since the 2682 * firmware will have already initialized them. We only initialize 2683 * them if the HW is not in IAMT mode. 2684 */ 2685 if (e1000_check_mng_mode(hw) == FALSE) { 2686 /* Enable Electrical Idle on the PHY */ 2687 phy_data |= GG82563_PMCR_ENABLE_ELECTRICAL_IDLE; 2688 ret_val = e1000_write_phy_reg(hw, 2689 GG82563_PHY_PWR_MGMT_CTRL, phy_data); 2690 if (ret_val) 2691 return ret_val; 2692 2693 ret_val = e1000_read_phy_reg(hw, 2694 GG82563_PHY_KMRN_MODE_CTRL, &phy_data); 2695 if (ret_val) 2696 return ret_val; 2697 2698 phy_data &= ~GG82563_KMCR_PASS_FALSE_CARRIER; 2699 ret_val = e1000_write_phy_reg(hw, 2700 GG82563_PHY_KMRN_MODE_CTRL, phy_data); 2701 2702 if (ret_val) 2703 return ret_val; 2704 } 2705 2706 /* Workaround: Disable padding in Kumeran interface in the MAC 2707 * and in the PHY to avoid CRC errors. 2708 */ 2709 ret_val = e1000_read_phy_reg(hw, 2710 GG82563_PHY_INBAND_CTRL, &phy_data); 2711 if (ret_val) 2712 return ret_val; 2713 phy_data |= GG82563_ICR_DIS_PADDING; 2714 ret_val = e1000_write_phy_reg(hw, 2715 GG82563_PHY_INBAND_CTRL, phy_data); 2716 if (ret_val) 2717 return ret_val; 2718 } 2719 return E1000_SUCCESS; 2720 } 2721 2722 /******************************************************************** 2723 * Copper link setup for e1000_phy_m88 series. 2724 * 2725 * hw - Struct containing variables accessed by shared code 2726 *********************************************************************/ 2727 static int32_t 2728 e1000_copper_link_mgp_setup(struct e1000_hw *hw) 2729 { 2730 int32_t ret_val; 2731 uint16_t phy_data; 2732 2733 DEBUGFUNC(); 2734 2735 if (hw->phy_reset_disable) 2736 return E1000_SUCCESS; 2737 2738 /* Enable CRS on TX. This must be set for half-duplex operation. */ 2739 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); 2740 if (ret_val) 2741 return ret_val; 2742 2743 phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX; 2744 2745 /* Options: 2746 * MDI/MDI-X = 0 (default) 2747 * 0 - Auto for all speeds 2748 * 1 - MDI mode 2749 * 2 - MDI-X mode 2750 * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes) 2751 */ 2752 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE; 2753 2754 switch (hw->mdix) { 2755 case 1: 2756 phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE; 2757 break; 2758 case 2: 2759 phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE; 2760 break; 2761 case 3: 2762 phy_data |= M88E1000_PSCR_AUTO_X_1000T; 2763 break; 2764 case 0: 2765 default: 2766 phy_data |= M88E1000_PSCR_AUTO_X_MODE; 2767 break; 2768 } 2769 2770 /* Options: 2771 * disable_polarity_correction = 0 (default) 2772 * Automatic Correction for Reversed Cable Polarity 2773 * 0 - Disabled 2774 * 1 - Enabled 2775 */ 2776 phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL; 2777 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); 2778 if (ret_val) 2779 return ret_val; 2780 2781 if (hw->phy_revision < M88E1011_I_REV_4) { 2782 /* Force TX_CLK in the Extended PHY Specific Control Register 2783 * to 25MHz clock. 2784 */ 2785 ret_val = e1000_read_phy_reg(hw, 2786 M88E1000_EXT_PHY_SPEC_CTRL, &phy_data); 2787 if (ret_val) 2788 return ret_val; 2789 2790 phy_data |= M88E1000_EPSCR_TX_CLK_25; 2791 2792 if ((hw->phy_revision == E1000_REVISION_2) && 2793 (hw->phy_id == M88E1111_I_PHY_ID)) { 2794 /* Vidalia Phy, set the downshift counter to 5x */ 2795 phy_data &= ~(M88EC018_EPSCR_DOWNSHIFT_COUNTER_MASK); 2796 phy_data |= M88EC018_EPSCR_DOWNSHIFT_COUNTER_5X; 2797 ret_val = e1000_write_phy_reg(hw, 2798 M88E1000_EXT_PHY_SPEC_CTRL, phy_data); 2799 if (ret_val) 2800 return ret_val; 2801 } else { 2802 /* Configure Master and Slave downshift values */ 2803 phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK 2804 | M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK); 2805 phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X 2806 | M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X); 2807 ret_val = e1000_write_phy_reg(hw, 2808 M88E1000_EXT_PHY_SPEC_CTRL, phy_data); 2809 if (ret_val) 2810 return ret_val; 2811 } 2812 } 2813 2814 /* SW Reset the PHY so all changes take effect */ 2815 ret_val = e1000_phy_reset(hw); 2816 if (ret_val) { 2817 DEBUGOUT("Error Resetting the PHY\n"); 2818 return ret_val; 2819 } 2820 2821 return E1000_SUCCESS; 2822 } 2823 2824 /******************************************************************** 2825 * Setup auto-negotiation and flow control advertisements, 2826 * and then perform auto-negotiation. 2827 * 2828 * hw - Struct containing variables accessed by shared code 2829 *********************************************************************/ 2830 static int32_t 2831 e1000_copper_link_autoneg(struct e1000_hw *hw) 2832 { 2833 int32_t ret_val; 2834 uint16_t phy_data; 2835 2836 DEBUGFUNC(); 2837 2838 /* Perform some bounds checking on the hw->autoneg_advertised 2839 * parameter. If this variable is zero, then set it to the default. 2840 */ 2841 hw->autoneg_advertised &= AUTONEG_ADVERTISE_SPEED_DEFAULT; 2842 2843 /* If autoneg_advertised is zero, we assume it was not defaulted 2844 * by the calling code so we set to advertise full capability. 2845 */ 2846 if (hw->autoneg_advertised == 0) 2847 hw->autoneg_advertised = AUTONEG_ADVERTISE_SPEED_DEFAULT; 2848 2849 /* IFE phy only supports 10/100 */ 2850 if (hw->phy_type == e1000_phy_ife) 2851 hw->autoneg_advertised &= AUTONEG_ADVERTISE_10_100_ALL; 2852 2853 DEBUGOUT("Reconfiguring auto-neg advertisement params\n"); 2854 ret_val = e1000_phy_setup_autoneg(hw); 2855 if (ret_val) { 2856 DEBUGOUT("Error Setting up Auto-Negotiation\n"); 2857 return ret_val; 2858 } 2859 DEBUGOUT("Restarting Auto-Neg\n"); 2860 2861 /* Restart auto-negotiation by setting the Auto Neg Enable bit and 2862 * the Auto Neg Restart bit in the PHY control register. 2863 */ 2864 ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data); 2865 if (ret_val) 2866 return ret_val; 2867 2868 phy_data |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG); 2869 ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data); 2870 if (ret_val) 2871 return ret_val; 2872 2873 /* Does the user want to wait for Auto-Neg to complete here, or 2874 * check at a later time (for example, callback routine). 2875 */ 2876 /* If we do not wait for autonegtation to complete I 2877 * do not see a valid link status. 2878 * wait_autoneg_complete = 1 . 2879 */ 2880 if (hw->wait_autoneg_complete) { 2881 ret_val = e1000_wait_autoneg(hw); 2882 if (ret_val) { 2883 DEBUGOUT("Error while waiting for autoneg" 2884 "to complete\n"); 2885 return ret_val; 2886 } 2887 } 2888 2889 hw->get_link_status = TRUE; 2890 2891 return E1000_SUCCESS; 2892 } 2893 2894 /****************************************************************************** 2895 * Config the MAC and the PHY after link is up. 2896 * 1) Set up the MAC to the current PHY speed/duplex 2897 * if we are on 82543. If we 2898 * are on newer silicon, we only need to configure 2899 * collision distance in the Transmit Control Register. 2900 * 2) Set up flow control on the MAC to that established with 2901 * the link partner. 2902 * 3) Config DSP to improve Gigabit link quality for some PHY revisions. 2903 * 2904 * hw - Struct containing variables accessed by shared code 2905 ******************************************************************************/ 2906 static int32_t 2907 e1000_copper_link_postconfig(struct e1000_hw *hw) 2908 { 2909 int32_t ret_val; 2910 DEBUGFUNC(); 2911 2912 if (hw->mac_type >= e1000_82544) { 2913 e1000_config_collision_dist(hw); 2914 } else { 2915 ret_val = e1000_config_mac_to_phy(hw); 2916 if (ret_val) { 2917 DEBUGOUT("Error configuring MAC to PHY settings\n"); 2918 return ret_val; 2919 } 2920 } 2921 ret_val = e1000_config_fc_after_link_up(hw); 2922 if (ret_val) { 2923 DEBUGOUT("Error Configuring Flow Control\n"); 2924 return ret_val; 2925 } 2926 return E1000_SUCCESS; 2927 } 2928 2929 /****************************************************************************** 2930 * Detects which PHY is present and setup the speed and duplex 2931 * 2932 * hw - Struct containing variables accessed by shared code 2933 ******************************************************************************/ 2934 static int 2935 e1000_setup_copper_link(struct eth_device *nic) 2936 { 2937 struct e1000_hw *hw = nic->priv; 2938 int32_t ret_val; 2939 uint16_t i; 2940 uint16_t phy_data; 2941 uint16_t reg_data; 2942 2943 DEBUGFUNC(); 2944 2945 switch (hw->mac_type) { 2946 case e1000_80003es2lan: 2947 case e1000_ich8lan: 2948 /* Set the mac to wait the maximum time between each 2949 * iteration and increase the max iterations when 2950 * polling the phy; this fixes erroneous timeouts at 10Mbps. */ 2951 ret_val = e1000_write_kmrn_reg(hw, 2952 GG82563_REG(0x34, 4), 0xFFFF); 2953 if (ret_val) 2954 return ret_val; 2955 ret_val = e1000_read_kmrn_reg(hw, 2956 GG82563_REG(0x34, 9), ®_data); 2957 if (ret_val) 2958 return ret_val; 2959 reg_data |= 0x3F; 2960 ret_val = e1000_write_kmrn_reg(hw, 2961 GG82563_REG(0x34, 9), reg_data); 2962 if (ret_val) 2963 return ret_val; 2964 default: 2965 break; 2966 } 2967 2968 /* Check if it is a valid PHY and set PHY mode if necessary. */ 2969 ret_val = e1000_copper_link_preconfig(hw); 2970 if (ret_val) 2971 return ret_val; 2972 switch (hw->mac_type) { 2973 case e1000_80003es2lan: 2974 /* Kumeran registers are written-only */ 2975 reg_data = 2976 E1000_KUMCTRLSTA_INB_CTRL_LINK_STATUS_TX_TIMEOUT_DEFAULT; 2977 reg_data |= E1000_KUMCTRLSTA_INB_CTRL_DIS_PADDING; 2978 ret_val = e1000_write_kmrn_reg(hw, 2979 E1000_KUMCTRLSTA_OFFSET_INB_CTRL, reg_data); 2980 if (ret_val) 2981 return ret_val; 2982 break; 2983 default: 2984 break; 2985 } 2986 2987 if (hw->phy_type == e1000_phy_igp || 2988 hw->phy_type == e1000_phy_igp_3 || 2989 hw->phy_type == e1000_phy_igp_2) { 2990 ret_val = e1000_copper_link_igp_setup(hw); 2991 if (ret_val) 2992 return ret_val; 2993 } else if (hw->phy_type == e1000_phy_m88) { 2994 ret_val = e1000_copper_link_mgp_setup(hw); 2995 if (ret_val) 2996 return ret_val; 2997 } else if (hw->phy_type == e1000_phy_gg82563) { 2998 ret_val = e1000_copper_link_ggp_setup(hw); 2999 if (ret_val) 3000 return ret_val; 3001 } 3002 3003 /* always auto */ 3004 /* Setup autoneg and flow control advertisement 3005 * and perform autonegotiation */ 3006 ret_val = e1000_copper_link_autoneg(hw); 3007 if (ret_val) 3008 return ret_val; 3009 3010 /* Check link status. Wait up to 100 microseconds for link to become 3011 * valid. 3012 */ 3013 for (i = 0; i < 10; i++) { 3014 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); 3015 if (ret_val) 3016 return ret_val; 3017 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); 3018 if (ret_val) 3019 return ret_val; 3020 3021 if (phy_data & MII_SR_LINK_STATUS) { 3022 /* Config the MAC and PHY after link is up */ 3023 ret_val = e1000_copper_link_postconfig(hw); 3024 if (ret_val) 3025 return ret_val; 3026 3027 DEBUGOUT("Valid link established!!!\n"); 3028 return E1000_SUCCESS; 3029 } 3030 udelay(10); 3031 } 3032 3033 DEBUGOUT("Unable to establish link!!!\n"); 3034 return E1000_SUCCESS; 3035 } 3036 3037 /****************************************************************************** 3038 * Configures PHY autoneg and flow control advertisement settings 3039 * 3040 * hw - Struct containing variables accessed by shared code 3041 ******************************************************************************/ 3042 int32_t 3043 e1000_phy_setup_autoneg(struct e1000_hw *hw) 3044 { 3045 int32_t ret_val; 3046 uint16_t mii_autoneg_adv_reg; 3047 uint16_t mii_1000t_ctrl_reg; 3048 3049 DEBUGFUNC(); 3050 3051 /* Read the MII Auto-Neg Advertisement Register (Address 4). */ 3052 ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg); 3053 if (ret_val) 3054 return ret_val; 3055 3056 if (hw->phy_type != e1000_phy_ife) { 3057 /* Read the MII 1000Base-T Control Register (Address 9). */ 3058 ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, 3059 &mii_1000t_ctrl_reg); 3060 if (ret_val) 3061 return ret_val; 3062 } else 3063 mii_1000t_ctrl_reg = 0; 3064 3065 /* Need to parse both autoneg_advertised and fc and set up 3066 * the appropriate PHY registers. First we will parse for 3067 * autoneg_advertised software override. Since we can advertise 3068 * a plethora of combinations, we need to check each bit 3069 * individually. 3070 */ 3071 3072 /* First we clear all the 10/100 mb speed bits in the Auto-Neg 3073 * Advertisement Register (Address 4) and the 1000 mb speed bits in 3074 * the 1000Base-T Control Register (Address 9). 3075 */ 3076 mii_autoneg_adv_reg &= ~REG4_SPEED_MASK; 3077 mii_1000t_ctrl_reg &= ~REG9_SPEED_MASK; 3078 3079 DEBUGOUT("autoneg_advertised %x\n", hw->autoneg_advertised); 3080 3081 /* Do we want to advertise 10 Mb Half Duplex? */ 3082 if (hw->autoneg_advertised & ADVERTISE_10_HALF) { 3083 DEBUGOUT("Advertise 10mb Half duplex\n"); 3084 mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS; 3085 } 3086 3087 /* Do we want to advertise 10 Mb Full Duplex? */ 3088 if (hw->autoneg_advertised & ADVERTISE_10_FULL) { 3089 DEBUGOUT("Advertise 10mb Full duplex\n"); 3090 mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS; 3091 } 3092 3093 /* Do we want to advertise 100 Mb Half Duplex? */ 3094 if (hw->autoneg_advertised & ADVERTISE_100_HALF) { 3095 DEBUGOUT("Advertise 100mb Half duplex\n"); 3096 mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS; 3097 } 3098 3099 /* Do we want to advertise 100 Mb Full Duplex? */ 3100 if (hw->autoneg_advertised & ADVERTISE_100_FULL) { 3101 DEBUGOUT("Advertise 100mb Full duplex\n"); 3102 mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS; 3103 } 3104 3105 /* We do not allow the Phy to advertise 1000 Mb Half Duplex */ 3106 if (hw->autoneg_advertised & ADVERTISE_1000_HALF) { 3107 DEBUGOUT 3108 ("Advertise 1000mb Half duplex requested, request denied!\n"); 3109 } 3110 3111 /* Do we want to advertise 1000 Mb Full Duplex? */ 3112 if (hw->autoneg_advertised & ADVERTISE_1000_FULL) { 3113 DEBUGOUT("Advertise 1000mb Full duplex\n"); 3114 mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS; 3115 } 3116 3117 /* Check for a software override of the flow control settings, and 3118 * setup the PHY advertisement registers accordingly. If 3119 * auto-negotiation is enabled, then software will have to set the 3120 * "PAUSE" bits to the correct value in the Auto-Negotiation 3121 * Advertisement Register (PHY_AUTONEG_ADV) and re-start auto-negotiation. 3122 * 3123 * The possible values of the "fc" parameter are: 3124 * 0: Flow control is completely disabled 3125 * 1: Rx flow control is enabled (we can receive pause frames 3126 * but not send pause frames). 3127 * 2: Tx flow control is enabled (we can send pause frames 3128 * but we do not support receiving pause frames). 3129 * 3: Both Rx and TX flow control (symmetric) are enabled. 3130 * other: No software override. The flow control configuration 3131 * in the EEPROM is used. 3132 */ 3133 switch (hw->fc) { 3134 case e1000_fc_none: /* 0 */ 3135 /* Flow control (RX & TX) is completely disabled by a 3136 * software over-ride. 3137 */ 3138 mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); 3139 break; 3140 case e1000_fc_rx_pause: /* 1 */ 3141 /* RX Flow control is enabled, and TX Flow control is 3142 * disabled, by a software over-ride. 3143 */ 3144 /* Since there really isn't a way to advertise that we are 3145 * capable of RX Pause ONLY, we will advertise that we 3146 * support both symmetric and asymmetric RX PAUSE. Later 3147 * (in e1000_config_fc_after_link_up) we will disable the 3148 *hw's ability to send PAUSE frames. 3149 */ 3150 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); 3151 break; 3152 case e1000_fc_tx_pause: /* 2 */ 3153 /* TX Flow control is enabled, and RX Flow control is 3154 * disabled, by a software over-ride. 3155 */ 3156 mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR; 3157 mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE; 3158 break; 3159 case e1000_fc_full: /* 3 */ 3160 /* Flow control (both RX and TX) is enabled by a software 3161 * over-ride. 3162 */ 3163 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); 3164 break; 3165 default: 3166 DEBUGOUT("Flow control param set incorrectly\n"); 3167 return -E1000_ERR_CONFIG; 3168 } 3169 3170 ret_val = e1000_write_phy_reg(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg); 3171 if (ret_val) 3172 return ret_val; 3173 3174 DEBUGOUT("Auto-Neg Advertising %x\n", mii_autoneg_adv_reg); 3175 3176 if (hw->phy_type != e1000_phy_ife) { 3177 ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, 3178 mii_1000t_ctrl_reg); 3179 if (ret_val) 3180 return ret_val; 3181 } 3182 3183 return E1000_SUCCESS; 3184 } 3185 3186 /****************************************************************************** 3187 * Sets the collision distance in the Transmit Control register 3188 * 3189 * hw - Struct containing variables accessed by shared code 3190 * 3191 * Link should have been established previously. Reads the speed and duplex 3192 * information from the Device Status register. 3193 ******************************************************************************/ 3194 static void 3195 e1000_config_collision_dist(struct e1000_hw *hw) 3196 { 3197 uint32_t tctl, coll_dist; 3198 3199 DEBUGFUNC(); 3200 3201 if (hw->mac_type < e1000_82543) 3202 coll_dist = E1000_COLLISION_DISTANCE_82542; 3203 else 3204 coll_dist = E1000_COLLISION_DISTANCE; 3205 3206 tctl = E1000_READ_REG(hw, TCTL); 3207 3208 tctl &= ~E1000_TCTL_COLD; 3209 tctl |= coll_dist << E1000_COLD_SHIFT; 3210 3211 E1000_WRITE_REG(hw, TCTL, tctl); 3212 E1000_WRITE_FLUSH(hw); 3213 } 3214 3215 /****************************************************************************** 3216 * Sets MAC speed and duplex settings to reflect the those in the PHY 3217 * 3218 * hw - Struct containing variables accessed by shared code 3219 * mii_reg - data to write to the MII control register 3220 * 3221 * The contents of the PHY register containing the needed information need to 3222 * be passed in. 3223 ******************************************************************************/ 3224 static int 3225 e1000_config_mac_to_phy(struct e1000_hw *hw) 3226 { 3227 uint32_t ctrl; 3228 uint16_t phy_data; 3229 3230 DEBUGFUNC(); 3231 3232 /* Read the Device Control Register and set the bits to Force Speed 3233 * and Duplex. 3234 */ 3235 ctrl = E1000_READ_REG(hw, CTRL); 3236 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); 3237 ctrl &= ~(E1000_CTRL_SPD_SEL | E1000_CTRL_ILOS); 3238 3239 /* Set up duplex in the Device Control and Transmit Control 3240 * registers depending on negotiated values. 3241 */ 3242 if (e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data) < 0) { 3243 DEBUGOUT("PHY Read Error\n"); 3244 return -E1000_ERR_PHY; 3245 } 3246 if (phy_data & M88E1000_PSSR_DPLX) 3247 ctrl |= E1000_CTRL_FD; 3248 else 3249 ctrl &= ~E1000_CTRL_FD; 3250 3251 e1000_config_collision_dist(hw); 3252 3253 /* Set up speed in the Device Control register depending on 3254 * negotiated values. 3255 */ 3256 if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) 3257 ctrl |= E1000_CTRL_SPD_1000; 3258 else if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_100MBS) 3259 ctrl |= E1000_CTRL_SPD_100; 3260 /* Write the configured values back to the Device Control Reg. */ 3261 E1000_WRITE_REG(hw, CTRL, ctrl); 3262 return 0; 3263 } 3264 3265 /****************************************************************************** 3266 * Forces the MAC's flow control settings. 3267 * 3268 * hw - Struct containing variables accessed by shared code 3269 * 3270 * Sets the TFCE and RFCE bits in the device control register to reflect 3271 * the adapter settings. TFCE and RFCE need to be explicitly set by 3272 * software when a Copper PHY is used because autonegotiation is managed 3273 * by the PHY rather than the MAC. Software must also configure these 3274 * bits when link is forced on a fiber connection. 3275 *****************************************************************************/ 3276 static int 3277 e1000_force_mac_fc(struct e1000_hw *hw) 3278 { 3279 uint32_t ctrl; 3280 3281 DEBUGFUNC(); 3282 3283 /* Get the current configuration of the Device Control Register */ 3284 ctrl = E1000_READ_REG(hw, CTRL); 3285 3286 /* Because we didn't get link via the internal auto-negotiation 3287 * mechanism (we either forced link or we got link via PHY 3288 * auto-neg), we have to manually enable/disable transmit an 3289 * receive flow control. 3290 * 3291 * The "Case" statement below enables/disable flow control 3292 * according to the "hw->fc" parameter. 3293 * 3294 * The possible values of the "fc" parameter are: 3295 * 0: Flow control is completely disabled 3296 * 1: Rx flow control is enabled (we can receive pause 3297 * frames but not send pause frames). 3298 * 2: Tx flow control is enabled (we can send pause frames 3299 * frames but we do not receive pause frames). 3300 * 3: Both Rx and TX flow control (symmetric) is enabled. 3301 * other: No other values should be possible at this point. 3302 */ 3303 3304 switch (hw->fc) { 3305 case e1000_fc_none: 3306 ctrl &= (~(E1000_CTRL_TFCE | E1000_CTRL_RFCE)); 3307 break; 3308 case e1000_fc_rx_pause: 3309 ctrl &= (~E1000_CTRL_TFCE); 3310 ctrl |= E1000_CTRL_RFCE; 3311 break; 3312 case e1000_fc_tx_pause: 3313 ctrl &= (~E1000_CTRL_RFCE); 3314 ctrl |= E1000_CTRL_TFCE; 3315 break; 3316 case e1000_fc_full: 3317 ctrl |= (E1000_CTRL_TFCE | E1000_CTRL_RFCE); 3318 break; 3319 default: 3320 DEBUGOUT("Flow control param set incorrectly\n"); 3321 return -E1000_ERR_CONFIG; 3322 } 3323 3324 /* Disable TX Flow Control for 82542 (rev 2.0) */ 3325 if (hw->mac_type == e1000_82542_rev2_0) 3326 ctrl &= (~E1000_CTRL_TFCE); 3327 3328 E1000_WRITE_REG(hw, CTRL, ctrl); 3329 return 0; 3330 } 3331 3332 /****************************************************************************** 3333 * Configures flow control settings after link is established 3334 * 3335 * hw - Struct containing variables accessed by shared code 3336 * 3337 * Should be called immediately after a valid link has been established. 3338 * Forces MAC flow control settings if link was forced. When in MII/GMII mode 3339 * and autonegotiation is enabled, the MAC flow control settings will be set 3340 * based on the flow control negotiated by the PHY. In TBI mode, the TFCE 3341 * and RFCE bits will be automaticaly set to the negotiated flow control mode. 3342 *****************************************************************************/ 3343 static int32_t 3344 e1000_config_fc_after_link_up(struct e1000_hw *hw) 3345 { 3346 int32_t ret_val; 3347 uint16_t mii_status_reg; 3348 uint16_t mii_nway_adv_reg; 3349 uint16_t mii_nway_lp_ability_reg; 3350 uint16_t speed; 3351 uint16_t duplex; 3352 3353 DEBUGFUNC(); 3354 3355 /* Check for the case where we have fiber media and auto-neg failed 3356 * so we had to force link. In this case, we need to force the 3357 * configuration of the MAC to match the "fc" parameter. 3358 */ 3359 if (((hw->media_type == e1000_media_type_fiber) && (hw->autoneg_failed)) 3360 || ((hw->media_type == e1000_media_type_internal_serdes) 3361 && (hw->autoneg_failed)) 3362 || ((hw->media_type == e1000_media_type_copper) 3363 && (!hw->autoneg))) { 3364 ret_val = e1000_force_mac_fc(hw); 3365 if (ret_val < 0) { 3366 DEBUGOUT("Error forcing flow control settings\n"); 3367 return ret_val; 3368 } 3369 } 3370 3371 /* Check for the case where we have copper media and auto-neg is 3372 * enabled. In this case, we need to check and see if Auto-Neg 3373 * has completed, and if so, how the PHY and link partner has 3374 * flow control configured. 3375 */ 3376 if (hw->media_type == e1000_media_type_copper) { 3377 /* Read the MII Status Register and check to see if AutoNeg 3378 * has completed. We read this twice because this reg has 3379 * some "sticky" (latched) bits. 3380 */ 3381 if (e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg) < 0) { 3382 DEBUGOUT("PHY Read Error \n"); 3383 return -E1000_ERR_PHY; 3384 } 3385 if (e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg) < 0) { 3386 DEBUGOUT("PHY Read Error \n"); 3387 return -E1000_ERR_PHY; 3388 } 3389 3390 if (mii_status_reg & MII_SR_AUTONEG_COMPLETE) { 3391 /* The AutoNeg process has completed, so we now need to 3392 * read both the Auto Negotiation Advertisement Register 3393 * (Address 4) and the Auto_Negotiation Base Page Ability 3394 * Register (Address 5) to determine how flow control was 3395 * negotiated. 3396 */ 3397 if (e1000_read_phy_reg 3398 (hw, PHY_AUTONEG_ADV, &mii_nway_adv_reg) < 0) { 3399 DEBUGOUT("PHY Read Error\n"); 3400 return -E1000_ERR_PHY; 3401 } 3402 if (e1000_read_phy_reg 3403 (hw, PHY_LP_ABILITY, 3404 &mii_nway_lp_ability_reg) < 0) { 3405 DEBUGOUT("PHY Read Error\n"); 3406 return -E1000_ERR_PHY; 3407 } 3408 3409 /* Two bits in the Auto Negotiation Advertisement Register 3410 * (Address 4) and two bits in the Auto Negotiation Base 3411 * Page Ability Register (Address 5) determine flow control 3412 * for both the PHY and the link partner. The following 3413 * table, taken out of the IEEE 802.3ab/D6.0 dated March 25, 3414 * 1999, describes these PAUSE resolution bits and how flow 3415 * control is determined based upon these settings. 3416 * NOTE: DC = Don't Care 3417 * 3418 * LOCAL DEVICE | LINK PARTNER 3419 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | NIC Resolution 3420 *-------|---------|-------|---------|-------------------- 3421 * 0 | 0 | DC | DC | e1000_fc_none 3422 * 0 | 1 | 0 | DC | e1000_fc_none 3423 * 0 | 1 | 1 | 0 | e1000_fc_none 3424 * 0 | 1 | 1 | 1 | e1000_fc_tx_pause 3425 * 1 | 0 | 0 | DC | e1000_fc_none 3426 * 1 | DC | 1 | DC | e1000_fc_full 3427 * 1 | 1 | 0 | 0 | e1000_fc_none 3428 * 1 | 1 | 0 | 1 | e1000_fc_rx_pause 3429 * 3430 */ 3431 /* Are both PAUSE bits set to 1? If so, this implies 3432 * Symmetric Flow Control is enabled at both ends. The 3433 * ASM_DIR bits are irrelevant per the spec. 3434 * 3435 * For Symmetric Flow Control: 3436 * 3437 * LOCAL DEVICE | LINK PARTNER 3438 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result 3439 *-------|---------|-------|---------|-------------------- 3440 * 1 | DC | 1 | DC | e1000_fc_full 3441 * 3442 */ 3443 if ((mii_nway_adv_reg & NWAY_AR_PAUSE) && 3444 (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE)) { 3445 /* Now we need to check if the user selected RX ONLY 3446 * of pause frames. In this case, we had to advertise 3447 * FULL flow control because we could not advertise RX 3448 * ONLY. Hence, we must now check to see if we need to 3449 * turn OFF the TRANSMISSION of PAUSE frames. 3450 */ 3451 if (hw->original_fc == e1000_fc_full) { 3452 hw->fc = e1000_fc_full; 3453 DEBUGOUT("Flow Control = FULL.\r\n"); 3454 } else { 3455 hw->fc = e1000_fc_rx_pause; 3456 DEBUGOUT 3457 ("Flow Control = RX PAUSE frames only.\r\n"); 3458 } 3459 } 3460 /* For receiving PAUSE frames ONLY. 3461 * 3462 * LOCAL DEVICE | LINK PARTNER 3463 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result 3464 *-------|---------|-------|---------|-------------------- 3465 * 0 | 1 | 1 | 1 | e1000_fc_tx_pause 3466 * 3467 */ 3468 else if (!(mii_nway_adv_reg & NWAY_AR_PAUSE) && 3469 (mii_nway_adv_reg & NWAY_AR_ASM_DIR) && 3470 (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) && 3471 (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) 3472 { 3473 hw->fc = e1000_fc_tx_pause; 3474 DEBUGOUT 3475 ("Flow Control = TX PAUSE frames only.\r\n"); 3476 } 3477 /* For transmitting PAUSE frames ONLY. 3478 * 3479 * LOCAL DEVICE | LINK PARTNER 3480 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result 3481 *-------|---------|-------|---------|-------------------- 3482 * 1 | 1 | 0 | 1 | e1000_fc_rx_pause 3483 * 3484 */ 3485 else if ((mii_nway_adv_reg & NWAY_AR_PAUSE) && 3486 (mii_nway_adv_reg & NWAY_AR_ASM_DIR) && 3487 !(mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) && 3488 (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) 3489 { 3490 hw->fc = e1000_fc_rx_pause; 3491 DEBUGOUT 3492 ("Flow Control = RX PAUSE frames only.\r\n"); 3493 } 3494 /* Per the IEEE spec, at this point flow control should be 3495 * disabled. However, we want to consider that we could 3496 * be connected to a legacy switch that doesn't advertise 3497 * desired flow control, but can be forced on the link 3498 * partner. So if we advertised no flow control, that is 3499 * what we will resolve to. If we advertised some kind of 3500 * receive capability (Rx Pause Only or Full Flow Control) 3501 * and the link partner advertised none, we will configure 3502 * ourselves to enable Rx Flow Control only. We can do 3503 * this safely for two reasons: If the link partner really 3504 * didn't want flow control enabled, and we enable Rx, no 3505 * harm done since we won't be receiving any PAUSE frames 3506 * anyway. If the intent on the link partner was to have 3507 * flow control enabled, then by us enabling RX only, we 3508 * can at least receive pause frames and process them. 3509 * This is a good idea because in most cases, since we are 3510 * predominantly a server NIC, more times than not we will 3511 * be asked to delay transmission of packets than asking 3512 * our link partner to pause transmission of frames. 3513 */ 3514 else if (hw->original_fc == e1000_fc_none || 3515 hw->original_fc == e1000_fc_tx_pause) { 3516 hw->fc = e1000_fc_none; 3517 DEBUGOUT("Flow Control = NONE.\r\n"); 3518 } else { 3519 hw->fc = e1000_fc_rx_pause; 3520 DEBUGOUT 3521 ("Flow Control = RX PAUSE frames only.\r\n"); 3522 } 3523 3524 /* Now we need to do one last check... If we auto- 3525 * negotiated to HALF DUPLEX, flow control should not be 3526 * enabled per IEEE 802.3 spec. 3527 */ 3528 e1000_get_speed_and_duplex(hw, &speed, &duplex); 3529 3530 if (duplex == HALF_DUPLEX) 3531 hw->fc = e1000_fc_none; 3532 3533 /* Now we call a subroutine to actually force the MAC 3534 * controller to use the correct flow control settings. 3535 */ 3536 ret_val = e1000_force_mac_fc(hw); 3537 if (ret_val < 0) { 3538 DEBUGOUT 3539 ("Error forcing flow control settings\n"); 3540 return ret_val; 3541 } 3542 } else { 3543 DEBUGOUT 3544 ("Copper PHY and Auto Neg has not completed.\r\n"); 3545 } 3546 } 3547 return E1000_SUCCESS; 3548 } 3549 3550 /****************************************************************************** 3551 * Checks to see if the link status of the hardware has changed. 3552 * 3553 * hw - Struct containing variables accessed by shared code 3554 * 3555 * Called by any function that needs to check the link status of the adapter. 3556 *****************************************************************************/ 3557 static int 3558 e1000_check_for_link(struct eth_device *nic) 3559 { 3560 struct e1000_hw *hw = nic->priv; 3561 uint32_t rxcw; 3562 uint32_t ctrl; 3563 uint32_t status; 3564 uint32_t rctl; 3565 uint32_t signal; 3566 int32_t ret_val; 3567 uint16_t phy_data; 3568 uint16_t lp_capability; 3569 3570 DEBUGFUNC(); 3571 3572 /* On adapters with a MAC newer that 82544, SW Defineable pin 1 will be 3573 * set when the optics detect a signal. On older adapters, it will be 3574 * cleared when there is a signal 3575 */ 3576 ctrl = E1000_READ_REG(hw, CTRL); 3577 if ((hw->mac_type > e1000_82544) && !(ctrl & E1000_CTRL_ILOS)) 3578 signal = E1000_CTRL_SWDPIN1; 3579 else 3580 signal = 0; 3581 3582 status = E1000_READ_REG(hw, STATUS); 3583 rxcw = E1000_READ_REG(hw, RXCW); 3584 DEBUGOUT("ctrl: %#08x status %#08x rxcw %#08x\n", ctrl, status, rxcw); 3585 3586 /* If we have a copper PHY then we only want to go out to the PHY 3587 * registers to see if Auto-Neg has completed and/or if our link 3588 * status has changed. The get_link_status flag will be set if we 3589 * receive a Link Status Change interrupt or we have Rx Sequence 3590 * Errors. 3591 */ 3592 if ((hw->media_type == e1000_media_type_copper) && hw->get_link_status) { 3593 /* First we want to see if the MII Status Register reports 3594 * link. If so, then we want to get the current speed/duplex 3595 * of the PHY. 3596 * Read the register twice since the link bit is sticky. 3597 */ 3598 if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) { 3599 DEBUGOUT("PHY Read Error\n"); 3600 return -E1000_ERR_PHY; 3601 } 3602 if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) { 3603 DEBUGOUT("PHY Read Error\n"); 3604 return -E1000_ERR_PHY; 3605 } 3606 3607 if (phy_data & MII_SR_LINK_STATUS) { 3608 hw->get_link_status = FALSE; 3609 } else { 3610 /* No link detected */ 3611 return -E1000_ERR_NOLINK; 3612 } 3613 3614 /* We have a M88E1000 PHY and Auto-Neg is enabled. If we 3615 * have Si on board that is 82544 or newer, Auto 3616 * Speed Detection takes care of MAC speed/duplex 3617 * configuration. So we only need to configure Collision 3618 * Distance in the MAC. Otherwise, we need to force 3619 * speed/duplex on the MAC to the current PHY speed/duplex 3620 * settings. 3621 */ 3622 if (hw->mac_type >= e1000_82544) 3623 e1000_config_collision_dist(hw); 3624 else { 3625 ret_val = e1000_config_mac_to_phy(hw); 3626 if (ret_val < 0) { 3627 DEBUGOUT 3628 ("Error configuring MAC to PHY settings\n"); 3629 return ret_val; 3630 } 3631 } 3632 3633 /* Configure Flow Control now that Auto-Neg has completed. First, we 3634 * need to restore the desired flow control settings because we may 3635 * have had to re-autoneg with a different link partner. 3636 */ 3637 ret_val = e1000_config_fc_after_link_up(hw); 3638 if (ret_val < 0) { 3639 DEBUGOUT("Error configuring flow control\n"); 3640 return ret_val; 3641 } 3642 3643 /* At this point we know that we are on copper and we have 3644 * auto-negotiated link. These are conditions for checking the link 3645 * parter capability register. We use the link partner capability to 3646 * determine if TBI Compatibility needs to be turned on or off. If 3647 * the link partner advertises any speed in addition to Gigabit, then 3648 * we assume that they are GMII-based, and TBI compatibility is not 3649 * needed. If no other speeds are advertised, we assume the link 3650 * partner is TBI-based, and we turn on TBI Compatibility. 3651 */ 3652 if (hw->tbi_compatibility_en) { 3653 if (e1000_read_phy_reg 3654 (hw, PHY_LP_ABILITY, &lp_capability) < 0) { 3655 DEBUGOUT("PHY Read Error\n"); 3656 return -E1000_ERR_PHY; 3657 } 3658 if (lp_capability & (NWAY_LPAR_10T_HD_CAPS | 3659 NWAY_LPAR_10T_FD_CAPS | 3660 NWAY_LPAR_100TX_HD_CAPS | 3661 NWAY_LPAR_100TX_FD_CAPS | 3662 NWAY_LPAR_100T4_CAPS)) { 3663 /* If our link partner advertises anything in addition to 3664 * gigabit, we do not need to enable TBI compatibility. 3665 */ 3666 if (hw->tbi_compatibility_on) { 3667 /* If we previously were in the mode, turn it off. */ 3668 rctl = E1000_READ_REG(hw, RCTL); 3669 rctl &= ~E1000_RCTL_SBP; 3670 E1000_WRITE_REG(hw, RCTL, rctl); 3671 hw->tbi_compatibility_on = FALSE; 3672 } 3673 } else { 3674 /* If TBI compatibility is was previously off, turn it on. For 3675 * compatibility with a TBI link partner, we will store bad 3676 * packets. Some frames have an additional byte on the end and 3677 * will look like CRC errors to to the hardware. 3678 */ 3679 if (!hw->tbi_compatibility_on) { 3680 hw->tbi_compatibility_on = TRUE; 3681 rctl = E1000_READ_REG(hw, RCTL); 3682 rctl |= E1000_RCTL_SBP; 3683 E1000_WRITE_REG(hw, RCTL, rctl); 3684 } 3685 } 3686 } 3687 } 3688 /* If we don't have link (auto-negotiation failed or link partner cannot 3689 * auto-negotiate), the cable is plugged in (we have signal), and our 3690 * link partner is not trying to auto-negotiate with us (we are receiving 3691 * idles or data), we need to force link up. We also need to give 3692 * auto-negotiation time to complete, in case the cable was just plugged 3693 * in. The autoneg_failed flag does this. 3694 */ 3695 else if ((hw->media_type == e1000_media_type_fiber) && 3696 (!(status & E1000_STATUS_LU)) && 3697 ((ctrl & E1000_CTRL_SWDPIN1) == signal) && 3698 (!(rxcw & E1000_RXCW_C))) { 3699 if (hw->autoneg_failed == 0) { 3700 hw->autoneg_failed = 1; 3701 return 0; 3702 } 3703 DEBUGOUT("NOT RXing /C/, disable AutoNeg and force link.\r\n"); 3704 3705 /* Disable auto-negotiation in the TXCW register */ 3706 E1000_WRITE_REG(hw, TXCW, (hw->txcw & ~E1000_TXCW_ANE)); 3707 3708 /* Force link-up and also force full-duplex. */ 3709 ctrl = E1000_READ_REG(hw, CTRL); 3710 ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FD); 3711 E1000_WRITE_REG(hw, CTRL, ctrl); 3712 3713 /* Configure Flow Control after forcing link up. */ 3714 ret_val = e1000_config_fc_after_link_up(hw); 3715 if (ret_val < 0) { 3716 DEBUGOUT("Error configuring flow control\n"); 3717 return ret_val; 3718 } 3719 } 3720 /* If we are forcing link and we are receiving /C/ ordered sets, re-enable 3721 * auto-negotiation in the TXCW register and disable forced link in the 3722 * Device Control register in an attempt to auto-negotiate with our link 3723 * partner. 3724 */ 3725 else if ((hw->media_type == e1000_media_type_fiber) && 3726 (ctrl & E1000_CTRL_SLU) && (rxcw & E1000_RXCW_C)) { 3727 DEBUGOUT 3728 ("RXing /C/, enable AutoNeg and stop forcing link.\r\n"); 3729 E1000_WRITE_REG(hw, TXCW, hw->txcw); 3730 E1000_WRITE_REG(hw, CTRL, (ctrl & ~E1000_CTRL_SLU)); 3731 } 3732 return 0; 3733 } 3734 3735 /****************************************************************************** 3736 * Configure the MAC-to-PHY interface for 10/100Mbps 3737 * 3738 * hw - Struct containing variables accessed by shared code 3739 ******************************************************************************/ 3740 static int32_t 3741 e1000_configure_kmrn_for_10_100(struct e1000_hw *hw, uint16_t duplex) 3742 { 3743 int32_t ret_val = E1000_SUCCESS; 3744 uint32_t tipg; 3745 uint16_t reg_data; 3746 3747 DEBUGFUNC(); 3748 3749 reg_data = E1000_KUMCTRLSTA_HD_CTRL_10_100_DEFAULT; 3750 ret_val = e1000_write_kmrn_reg(hw, 3751 E1000_KUMCTRLSTA_OFFSET_HD_CTRL, reg_data); 3752 if (ret_val) 3753 return ret_val; 3754 3755 /* Configure Transmit Inter-Packet Gap */ 3756 tipg = E1000_READ_REG(hw, TIPG); 3757 tipg &= ~E1000_TIPG_IPGT_MASK; 3758 tipg |= DEFAULT_80003ES2LAN_TIPG_IPGT_10_100; 3759 E1000_WRITE_REG(hw, TIPG, tipg); 3760 3761 ret_val = e1000_read_phy_reg(hw, GG82563_PHY_KMRN_MODE_CTRL, ®_data); 3762 3763 if (ret_val) 3764 return ret_val; 3765 3766 if (duplex == HALF_DUPLEX) 3767 reg_data |= GG82563_KMCR_PASS_FALSE_CARRIER; 3768 else 3769 reg_data &= ~GG82563_KMCR_PASS_FALSE_CARRIER; 3770 3771 ret_val = e1000_write_phy_reg(hw, GG82563_PHY_KMRN_MODE_CTRL, reg_data); 3772 3773 return ret_val; 3774 } 3775 3776 static int32_t 3777 e1000_configure_kmrn_for_1000(struct e1000_hw *hw) 3778 { 3779 int32_t ret_val = E1000_SUCCESS; 3780 uint16_t reg_data; 3781 uint32_t tipg; 3782 3783 DEBUGFUNC(); 3784 3785 reg_data = E1000_KUMCTRLSTA_HD_CTRL_1000_DEFAULT; 3786 ret_val = e1000_write_kmrn_reg(hw, 3787 E1000_KUMCTRLSTA_OFFSET_HD_CTRL, reg_data); 3788 if (ret_val) 3789 return ret_val; 3790 3791 /* Configure Transmit Inter-Packet Gap */ 3792 tipg = E1000_READ_REG(hw, TIPG); 3793 tipg &= ~E1000_TIPG_IPGT_MASK; 3794 tipg |= DEFAULT_80003ES2LAN_TIPG_IPGT_1000; 3795 E1000_WRITE_REG(hw, TIPG, tipg); 3796 3797 ret_val = e1000_read_phy_reg(hw, GG82563_PHY_KMRN_MODE_CTRL, ®_data); 3798 3799 if (ret_val) 3800 return ret_val; 3801 3802 reg_data &= ~GG82563_KMCR_PASS_FALSE_CARRIER; 3803 ret_val = e1000_write_phy_reg(hw, GG82563_PHY_KMRN_MODE_CTRL, reg_data); 3804 3805 return ret_val; 3806 } 3807 3808 /****************************************************************************** 3809 * Detects the current speed and duplex settings of the hardware. 3810 * 3811 * hw - Struct containing variables accessed by shared code 3812 * speed - Speed of the connection 3813 * duplex - Duplex setting of the connection 3814 *****************************************************************************/ 3815 static int 3816 e1000_get_speed_and_duplex(struct e1000_hw *hw, uint16_t *speed, 3817 uint16_t *duplex) 3818 { 3819 uint32_t status; 3820 int32_t ret_val; 3821 uint16_t phy_data; 3822 3823 DEBUGFUNC(); 3824 3825 if (hw->mac_type >= e1000_82543) { 3826 status = E1000_READ_REG(hw, STATUS); 3827 if (status & E1000_STATUS_SPEED_1000) { 3828 *speed = SPEED_1000; 3829 DEBUGOUT("1000 Mbs, "); 3830 } else if (status & E1000_STATUS_SPEED_100) { 3831 *speed = SPEED_100; 3832 DEBUGOUT("100 Mbs, "); 3833 } else { 3834 *speed = SPEED_10; 3835 DEBUGOUT("10 Mbs, "); 3836 } 3837 3838 if (status & E1000_STATUS_FD) { 3839 *duplex = FULL_DUPLEX; 3840 DEBUGOUT("Full Duplex\r\n"); 3841 } else { 3842 *duplex = HALF_DUPLEX; 3843 DEBUGOUT(" Half Duplex\r\n"); 3844 } 3845 } else { 3846 DEBUGOUT("1000 Mbs, Full Duplex\r\n"); 3847 *speed = SPEED_1000; 3848 *duplex = FULL_DUPLEX; 3849 } 3850 3851 /* IGP01 PHY may advertise full duplex operation after speed downgrade 3852 * even if it is operating at half duplex. Here we set the duplex 3853 * settings to match the duplex in the link partner's capabilities. 3854 */ 3855 if (hw->phy_type == e1000_phy_igp && hw->speed_downgraded) { 3856 ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_EXP, &phy_data); 3857 if (ret_val) 3858 return ret_val; 3859 3860 if (!(phy_data & NWAY_ER_LP_NWAY_CAPS)) 3861 *duplex = HALF_DUPLEX; 3862 else { 3863 ret_val = e1000_read_phy_reg(hw, 3864 PHY_LP_ABILITY, &phy_data); 3865 if (ret_val) 3866 return ret_val; 3867 if ((*speed == SPEED_100 && 3868 !(phy_data & NWAY_LPAR_100TX_FD_CAPS)) 3869 || (*speed == SPEED_10 3870 && !(phy_data & NWAY_LPAR_10T_FD_CAPS))) 3871 *duplex = HALF_DUPLEX; 3872 } 3873 } 3874 3875 if ((hw->mac_type == e1000_80003es2lan) && 3876 (hw->media_type == e1000_media_type_copper)) { 3877 if (*speed == SPEED_1000) 3878 ret_val = e1000_configure_kmrn_for_1000(hw); 3879 else 3880 ret_val = e1000_configure_kmrn_for_10_100(hw, *duplex); 3881 if (ret_val) 3882 return ret_val; 3883 } 3884 return E1000_SUCCESS; 3885 } 3886 3887 /****************************************************************************** 3888 * Blocks until autoneg completes or times out (~4.5 seconds) 3889 * 3890 * hw - Struct containing variables accessed by shared code 3891 ******************************************************************************/ 3892 static int 3893 e1000_wait_autoneg(struct e1000_hw *hw) 3894 { 3895 uint16_t i; 3896 uint16_t phy_data; 3897 3898 DEBUGFUNC(); 3899 DEBUGOUT("Waiting for Auto-Neg to complete.\n"); 3900 3901 /* We will wait for autoneg to complete or 4.5 seconds to expire. */ 3902 for (i = PHY_AUTO_NEG_TIME; i > 0; i--) { 3903 /* Read the MII Status Register and wait for Auto-Neg 3904 * Complete bit to be set. 3905 */ 3906 if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) { 3907 DEBUGOUT("PHY Read Error\n"); 3908 return -E1000_ERR_PHY; 3909 } 3910 if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) { 3911 DEBUGOUT("PHY Read Error\n"); 3912 return -E1000_ERR_PHY; 3913 } 3914 if (phy_data & MII_SR_AUTONEG_COMPLETE) { 3915 DEBUGOUT("Auto-Neg complete.\n"); 3916 return 0; 3917 } 3918 mdelay(100); 3919 } 3920 DEBUGOUT("Auto-Neg timedout.\n"); 3921 return -E1000_ERR_TIMEOUT; 3922 } 3923 3924 /****************************************************************************** 3925 * Raises the Management Data Clock 3926 * 3927 * hw - Struct containing variables accessed by shared code 3928 * ctrl - Device control register's current value 3929 ******************************************************************************/ 3930 static void 3931 e1000_raise_mdi_clk(struct e1000_hw *hw, uint32_t * ctrl) 3932 { 3933 /* Raise the clock input to the Management Data Clock (by setting the MDC 3934 * bit), and then delay 2 microseconds. 3935 */ 3936 E1000_WRITE_REG(hw, CTRL, (*ctrl | E1000_CTRL_MDC)); 3937 E1000_WRITE_FLUSH(hw); 3938 udelay(2); 3939 } 3940 3941 /****************************************************************************** 3942 * Lowers the Management Data Clock 3943 * 3944 * hw - Struct containing variables accessed by shared code 3945 * ctrl - Device control register's current value 3946 ******************************************************************************/ 3947 static void 3948 e1000_lower_mdi_clk(struct e1000_hw *hw, uint32_t * ctrl) 3949 { 3950 /* Lower the clock input to the Management Data Clock (by clearing the MDC 3951 * bit), and then delay 2 microseconds. 3952 */ 3953 E1000_WRITE_REG(hw, CTRL, (*ctrl & ~E1000_CTRL_MDC)); 3954 E1000_WRITE_FLUSH(hw); 3955 udelay(2); 3956 } 3957 3958 /****************************************************************************** 3959 * Shifts data bits out to the PHY 3960 * 3961 * hw - Struct containing variables accessed by shared code 3962 * data - Data to send out to the PHY 3963 * count - Number of bits to shift out 3964 * 3965 * Bits are shifted out in MSB to LSB order. 3966 ******************************************************************************/ 3967 static void 3968 e1000_shift_out_mdi_bits(struct e1000_hw *hw, uint32_t data, uint16_t count) 3969 { 3970 uint32_t ctrl; 3971 uint32_t mask; 3972 3973 /* We need to shift "count" number of bits out to the PHY. So, the value 3974 * in the "data" parameter will be shifted out to the PHY one bit at a 3975 * time. In order to do this, "data" must be broken down into bits. 3976 */ 3977 mask = 0x01; 3978 mask <<= (count - 1); 3979 3980 ctrl = E1000_READ_REG(hw, CTRL); 3981 3982 /* Set MDIO_DIR and MDC_DIR direction bits to be used as output pins. */ 3983 ctrl |= (E1000_CTRL_MDIO_DIR | E1000_CTRL_MDC_DIR); 3984 3985 while (mask) { 3986 /* A "1" is shifted out to the PHY by setting the MDIO bit to "1" and 3987 * then raising and lowering the Management Data Clock. A "0" is 3988 * shifted out to the PHY by setting the MDIO bit to "0" and then 3989 * raising and lowering the clock. 3990 */ 3991 if (data & mask) 3992 ctrl |= E1000_CTRL_MDIO; 3993 else 3994 ctrl &= ~E1000_CTRL_MDIO; 3995 3996 E1000_WRITE_REG(hw, CTRL, ctrl); 3997 E1000_WRITE_FLUSH(hw); 3998 3999 udelay(2); 4000 4001 e1000_raise_mdi_clk(hw, &ctrl); 4002 e1000_lower_mdi_clk(hw, &ctrl); 4003 4004 mask = mask >> 1; 4005 } 4006 } 4007 4008 /****************************************************************************** 4009 * Shifts data bits in from the PHY 4010 * 4011 * hw - Struct containing variables accessed by shared code 4012 * 4013 * Bits are shifted in in MSB to LSB order. 4014 ******************************************************************************/ 4015 static uint16_t 4016 e1000_shift_in_mdi_bits(struct e1000_hw *hw) 4017 { 4018 uint32_t ctrl; 4019 uint16_t data = 0; 4020 uint8_t i; 4021 4022 /* In order to read a register from the PHY, we need to shift in a total 4023 * of 18 bits from the PHY. The first two bit (turnaround) times are used 4024 * to avoid contention on the MDIO pin when a read operation is performed. 4025 * These two bits are ignored by us and thrown away. Bits are "shifted in" 4026 * by raising the input to the Management Data Clock (setting the MDC bit), 4027 * and then reading the value of the MDIO bit. 4028 */ 4029 ctrl = E1000_READ_REG(hw, CTRL); 4030 4031 /* Clear MDIO_DIR (SWDPIO1) to indicate this bit is to be used as input. */ 4032 ctrl &= ~E1000_CTRL_MDIO_DIR; 4033 ctrl &= ~E1000_CTRL_MDIO; 4034 4035 E1000_WRITE_REG(hw, CTRL, ctrl); 4036 E1000_WRITE_FLUSH(hw); 4037 4038 /* Raise and Lower the clock before reading in the data. This accounts for 4039 * the turnaround bits. The first clock occurred when we clocked out the 4040 * last bit of the Register Address. 4041 */ 4042 e1000_raise_mdi_clk(hw, &ctrl); 4043 e1000_lower_mdi_clk(hw, &ctrl); 4044 4045 for (data = 0, i = 0; i < 16; i++) { 4046 data = data << 1; 4047 e1000_raise_mdi_clk(hw, &ctrl); 4048 ctrl = E1000_READ_REG(hw, CTRL); 4049 /* Check to see if we shifted in a "1". */ 4050 if (ctrl & E1000_CTRL_MDIO) 4051 data |= 1; 4052 e1000_lower_mdi_clk(hw, &ctrl); 4053 } 4054 4055 e1000_raise_mdi_clk(hw, &ctrl); 4056 e1000_lower_mdi_clk(hw, &ctrl); 4057 4058 return data; 4059 } 4060 4061 /***************************************************************************** 4062 * Reads the value from a PHY register 4063 * 4064 * hw - Struct containing variables accessed by shared code 4065 * reg_addr - address of the PHY register to read 4066 ******************************************************************************/ 4067 static int 4068 e1000_read_phy_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t * phy_data) 4069 { 4070 uint32_t i; 4071 uint32_t mdic = 0; 4072 const uint32_t phy_addr = 1; 4073 4074 if (reg_addr > MAX_PHY_REG_ADDRESS) { 4075 DEBUGOUT("PHY Address %d is out of range\n", reg_addr); 4076 return -E1000_ERR_PARAM; 4077 } 4078 4079 if (hw->mac_type > e1000_82543) { 4080 /* Set up Op-code, Phy Address, and register address in the MDI 4081 * Control register. The MAC will take care of interfacing with the 4082 * PHY to retrieve the desired data. 4083 */ 4084 mdic = ((reg_addr << E1000_MDIC_REG_SHIFT) | 4085 (phy_addr << E1000_MDIC_PHY_SHIFT) | 4086 (E1000_MDIC_OP_READ)); 4087 4088 E1000_WRITE_REG(hw, MDIC, mdic); 4089 4090 /* Poll the ready bit to see if the MDI read completed */ 4091 for (i = 0; i < 64; i++) { 4092 udelay(10); 4093 mdic = E1000_READ_REG(hw, MDIC); 4094 if (mdic & E1000_MDIC_READY) 4095 break; 4096 } 4097 if (!(mdic & E1000_MDIC_READY)) { 4098 DEBUGOUT("MDI Read did not complete\n"); 4099 return -E1000_ERR_PHY; 4100 } 4101 if (mdic & E1000_MDIC_ERROR) { 4102 DEBUGOUT("MDI Error\n"); 4103 return -E1000_ERR_PHY; 4104 } 4105 *phy_data = (uint16_t) mdic; 4106 } else { 4107 /* We must first send a preamble through the MDIO pin to signal the 4108 * beginning of an MII instruction. This is done by sending 32 4109 * consecutive "1" bits. 4110 */ 4111 e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE); 4112 4113 /* Now combine the next few fields that are required for a read 4114 * operation. We use this method instead of calling the 4115 * e1000_shift_out_mdi_bits routine five different times. The format of 4116 * a MII read instruction consists of a shift out of 14 bits and is 4117 * defined as follows: 4118 * <Preamble><SOF><Op Code><Phy Addr><Reg Addr> 4119 * followed by a shift in of 18 bits. This first two bits shifted in 4120 * are TurnAround bits used to avoid contention on the MDIO pin when a 4121 * READ operation is performed. These two bits are thrown away 4122 * followed by a shift in of 16 bits which contains the desired data. 4123 */ 4124 mdic = ((reg_addr) | (phy_addr << 5) | 4125 (PHY_OP_READ << 10) | (PHY_SOF << 12)); 4126 4127 e1000_shift_out_mdi_bits(hw, mdic, 14); 4128 4129 /* Now that we've shifted out the read command to the MII, we need to 4130 * "shift in" the 16-bit value (18 total bits) of the requested PHY 4131 * register address. 4132 */ 4133 *phy_data = e1000_shift_in_mdi_bits(hw); 4134 } 4135 return 0; 4136 } 4137 4138 /****************************************************************************** 4139 * Writes a value to a PHY register 4140 * 4141 * hw - Struct containing variables accessed by shared code 4142 * reg_addr - address of the PHY register to write 4143 * data - data to write to the PHY 4144 ******************************************************************************/ 4145 static int 4146 e1000_write_phy_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t phy_data) 4147 { 4148 uint32_t i; 4149 uint32_t mdic = 0; 4150 const uint32_t phy_addr = 1; 4151 4152 if (reg_addr > MAX_PHY_REG_ADDRESS) { 4153 DEBUGOUT("PHY Address %d is out of range\n", reg_addr); 4154 return -E1000_ERR_PARAM; 4155 } 4156 4157 if (hw->mac_type > e1000_82543) { 4158 /* Set up Op-code, Phy Address, register address, and data intended 4159 * for the PHY register in the MDI Control register. The MAC will take 4160 * care of interfacing with the PHY to send the desired data. 4161 */ 4162 mdic = (((uint32_t) phy_data) | 4163 (reg_addr << E1000_MDIC_REG_SHIFT) | 4164 (phy_addr << E1000_MDIC_PHY_SHIFT) | 4165 (E1000_MDIC_OP_WRITE)); 4166 4167 E1000_WRITE_REG(hw, MDIC, mdic); 4168 4169 /* Poll the ready bit to see if the MDI read completed */ 4170 for (i = 0; i < 64; i++) { 4171 udelay(10); 4172 mdic = E1000_READ_REG(hw, MDIC); 4173 if (mdic & E1000_MDIC_READY) 4174 break; 4175 } 4176 if (!(mdic & E1000_MDIC_READY)) { 4177 DEBUGOUT("MDI Write did not complete\n"); 4178 return -E1000_ERR_PHY; 4179 } 4180 } else { 4181 /* We'll need to use the SW defined pins to shift the write command 4182 * out to the PHY. We first send a preamble to the PHY to signal the 4183 * beginning of the MII instruction. This is done by sending 32 4184 * consecutive "1" bits. 4185 */ 4186 e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE); 4187 4188 /* Now combine the remaining required fields that will indicate a 4189 * write operation. We use this method instead of calling the 4190 * e1000_shift_out_mdi_bits routine for each field in the command. The 4191 * format of a MII write instruction is as follows: 4192 * <Preamble><SOF><Op Code><Phy Addr><Reg Addr><Turnaround><Data>. 4193 */ 4194 mdic = ((PHY_TURNAROUND) | (reg_addr << 2) | (phy_addr << 7) | 4195 (PHY_OP_WRITE << 12) | (PHY_SOF << 14)); 4196 mdic <<= 16; 4197 mdic |= (uint32_t) phy_data; 4198 4199 e1000_shift_out_mdi_bits(hw, mdic, 32); 4200 } 4201 return 0; 4202 } 4203 4204 /****************************************************************************** 4205 * Checks if PHY reset is blocked due to SOL/IDER session, for example. 4206 * Returning E1000_BLK_PHY_RESET isn't necessarily an error. But it's up to 4207 * the caller to figure out how to deal with it. 4208 * 4209 * hw - Struct containing variables accessed by shared code 4210 * 4211 * returns: - E1000_BLK_PHY_RESET 4212 * E1000_SUCCESS 4213 * 4214 *****************************************************************************/ 4215 int32_t 4216 e1000_check_phy_reset_block(struct e1000_hw *hw) 4217 { 4218 uint32_t manc = 0; 4219 uint32_t fwsm = 0; 4220 4221 if (hw->mac_type == e1000_ich8lan) { 4222 fwsm = E1000_READ_REG(hw, FWSM); 4223 return (fwsm & E1000_FWSM_RSPCIPHY) ? E1000_SUCCESS 4224 : E1000_BLK_PHY_RESET; 4225 } 4226 4227 if (hw->mac_type > e1000_82547_rev_2) 4228 manc = E1000_READ_REG(hw, MANC); 4229 return (manc & E1000_MANC_BLK_PHY_RST_ON_IDE) ? 4230 E1000_BLK_PHY_RESET : E1000_SUCCESS; 4231 } 4232 4233 /*************************************************************************** 4234 * Checks if the PHY configuration is done 4235 * 4236 * hw: Struct containing variables accessed by shared code 4237 * 4238 * returns: - E1000_ERR_RESET if fail to reset MAC 4239 * E1000_SUCCESS at any other case. 4240 * 4241 ***************************************************************************/ 4242 static int32_t 4243 e1000_get_phy_cfg_done(struct e1000_hw *hw) 4244 { 4245 int32_t timeout = PHY_CFG_TIMEOUT; 4246 uint32_t cfg_mask = E1000_EEPROM_CFG_DONE; 4247 4248 DEBUGFUNC(); 4249 4250 switch (hw->mac_type) { 4251 default: 4252 mdelay(10); 4253 break; 4254 case e1000_80003es2lan: 4255 /* Separate *_CFG_DONE_* bit for each port */ 4256 if (E1000_READ_REG(hw, STATUS) & E1000_STATUS_FUNC_1) 4257 cfg_mask = E1000_EEPROM_CFG_DONE_PORT_1; 4258 /* Fall Through */ 4259 case e1000_82571: 4260 case e1000_82572: 4261 while (timeout) { 4262 if (E1000_READ_REG(hw, EEMNGCTL) & cfg_mask) 4263 break; 4264 else 4265 mdelay(1); 4266 timeout--; 4267 } 4268 if (!timeout) { 4269 DEBUGOUT("MNG configuration cycle has not " 4270 "completed.\n"); 4271 return -E1000_ERR_RESET; 4272 } 4273 break; 4274 } 4275 4276 return E1000_SUCCESS; 4277 } 4278 4279 /****************************************************************************** 4280 * Returns the PHY to the power-on reset state 4281 * 4282 * hw - Struct containing variables accessed by shared code 4283 ******************************************************************************/ 4284 int32_t 4285 e1000_phy_hw_reset(struct e1000_hw *hw) 4286 { 4287 uint32_t ctrl, ctrl_ext; 4288 uint32_t led_ctrl; 4289 int32_t ret_val; 4290 uint16_t swfw; 4291 4292 DEBUGFUNC(); 4293 4294 /* In the case of the phy reset being blocked, it's not an error, we 4295 * simply return success without performing the reset. */ 4296 ret_val = e1000_check_phy_reset_block(hw); 4297 if (ret_val) 4298 return E1000_SUCCESS; 4299 4300 DEBUGOUT("Resetting Phy...\n"); 4301 4302 if (hw->mac_type > e1000_82543) { 4303 if ((hw->mac_type == e1000_80003es2lan) && 4304 (E1000_READ_REG(hw, STATUS) & E1000_STATUS_FUNC_1)) { 4305 swfw = E1000_SWFW_PHY1_SM; 4306 } else { 4307 swfw = E1000_SWFW_PHY0_SM; 4308 } 4309 if (e1000_swfw_sync_acquire(hw, swfw)) { 4310 DEBUGOUT("Unable to acquire swfw sync\n"); 4311 return -E1000_ERR_SWFW_SYNC; 4312 } 4313 /* Read the device control register and assert the E1000_CTRL_PHY_RST 4314 * bit. Then, take it out of reset. 4315 */ 4316 ctrl = E1000_READ_REG(hw, CTRL); 4317 E1000_WRITE_REG(hw, CTRL, ctrl | E1000_CTRL_PHY_RST); 4318 E1000_WRITE_FLUSH(hw); 4319 4320 if (hw->mac_type < e1000_82571) 4321 udelay(10); 4322 else 4323 udelay(100); 4324 4325 E1000_WRITE_REG(hw, CTRL, ctrl); 4326 E1000_WRITE_FLUSH(hw); 4327 4328 if (hw->mac_type >= e1000_82571) 4329 mdelay(10); 4330 4331 } else { 4332 /* Read the Extended Device Control Register, assert the PHY_RESET_DIR 4333 * bit to put the PHY into reset. Then, take it out of reset. 4334 */ 4335 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); 4336 ctrl_ext |= E1000_CTRL_EXT_SDP4_DIR; 4337 ctrl_ext &= ~E1000_CTRL_EXT_SDP4_DATA; 4338 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); 4339 E1000_WRITE_FLUSH(hw); 4340 mdelay(10); 4341 ctrl_ext |= E1000_CTRL_EXT_SDP4_DATA; 4342 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); 4343 E1000_WRITE_FLUSH(hw); 4344 } 4345 udelay(150); 4346 4347 if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) { 4348 /* Configure activity LED after PHY reset */ 4349 led_ctrl = E1000_READ_REG(hw, LEDCTL); 4350 led_ctrl &= IGP_ACTIVITY_LED_MASK; 4351 led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE); 4352 E1000_WRITE_REG(hw, LEDCTL, led_ctrl); 4353 } 4354 4355 /* Wait for FW to finish PHY configuration. */ 4356 ret_val = e1000_get_phy_cfg_done(hw); 4357 if (ret_val != E1000_SUCCESS) 4358 return ret_val; 4359 4360 return ret_val; 4361 } 4362 4363 /****************************************************************************** 4364 * IGP phy init script - initializes the GbE PHY 4365 * 4366 * hw - Struct containing variables accessed by shared code 4367 *****************************************************************************/ 4368 static void 4369 e1000_phy_init_script(struct e1000_hw *hw) 4370 { 4371 uint32_t ret_val; 4372 uint16_t phy_saved_data; 4373 DEBUGFUNC(); 4374 4375 if (hw->phy_init_script) { 4376 mdelay(20); 4377 4378 /* Save off the current value of register 0x2F5B to be 4379 * restored at the end of this routine. */ 4380 ret_val = e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data); 4381 4382 /* Disabled the PHY transmitter */ 4383 e1000_write_phy_reg(hw, 0x2F5B, 0x0003); 4384 4385 mdelay(20); 4386 4387 e1000_write_phy_reg(hw, 0x0000, 0x0140); 4388 4389 mdelay(5); 4390 4391 switch (hw->mac_type) { 4392 case e1000_82541: 4393 case e1000_82547: 4394 e1000_write_phy_reg(hw, 0x1F95, 0x0001); 4395 4396 e1000_write_phy_reg(hw, 0x1F71, 0xBD21); 4397 4398 e1000_write_phy_reg(hw, 0x1F79, 0x0018); 4399 4400 e1000_write_phy_reg(hw, 0x1F30, 0x1600); 4401 4402 e1000_write_phy_reg(hw, 0x1F31, 0x0014); 4403 4404 e1000_write_phy_reg(hw, 0x1F32, 0x161C); 4405 4406 e1000_write_phy_reg(hw, 0x1F94, 0x0003); 4407 4408 e1000_write_phy_reg(hw, 0x1F96, 0x003F); 4409 4410 e1000_write_phy_reg(hw, 0x2010, 0x0008); 4411 break; 4412 4413 case e1000_82541_rev_2: 4414 case e1000_82547_rev_2: 4415 e1000_write_phy_reg(hw, 0x1F73, 0x0099); 4416 break; 4417 default: 4418 break; 4419 } 4420 4421 e1000_write_phy_reg(hw, 0x0000, 0x3300); 4422 4423 mdelay(20); 4424 4425 /* Now enable the transmitter */ 4426 e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data); 4427 4428 if (hw->mac_type == e1000_82547) { 4429 uint16_t fused, fine, coarse; 4430 4431 /* Move to analog registers page */ 4432 e1000_read_phy_reg(hw, 4433 IGP01E1000_ANALOG_SPARE_FUSE_STATUS, &fused); 4434 4435 if (!(fused & IGP01E1000_ANALOG_SPARE_FUSE_ENABLED)) { 4436 e1000_read_phy_reg(hw, 4437 IGP01E1000_ANALOG_FUSE_STATUS, &fused); 4438 4439 fine = fused & IGP01E1000_ANALOG_FUSE_FINE_MASK; 4440 coarse = fused 4441 & IGP01E1000_ANALOG_FUSE_COARSE_MASK; 4442 4443 if (coarse > 4444 IGP01E1000_ANALOG_FUSE_COARSE_THRESH) { 4445 coarse -= 4446 IGP01E1000_ANALOG_FUSE_COARSE_10; 4447 fine -= IGP01E1000_ANALOG_FUSE_FINE_1; 4448 } else if (coarse 4449 == IGP01E1000_ANALOG_FUSE_COARSE_THRESH) 4450 fine -= IGP01E1000_ANALOG_FUSE_FINE_10; 4451 4452 fused = (fused 4453 & IGP01E1000_ANALOG_FUSE_POLY_MASK) | 4454 (fine 4455 & IGP01E1000_ANALOG_FUSE_FINE_MASK) | 4456 (coarse 4457 & IGP01E1000_ANALOG_FUSE_COARSE_MASK); 4458 4459 e1000_write_phy_reg(hw, 4460 IGP01E1000_ANALOG_FUSE_CONTROL, fused); 4461 e1000_write_phy_reg(hw, 4462 IGP01E1000_ANALOG_FUSE_BYPASS, 4463 IGP01E1000_ANALOG_FUSE_ENABLE_SW_CONTROL); 4464 } 4465 } 4466 } 4467 } 4468 4469 /****************************************************************************** 4470 * Resets the PHY 4471 * 4472 * hw - Struct containing variables accessed by shared code 4473 * 4474 * Sets bit 15 of the MII Control register 4475 ******************************************************************************/ 4476 int32_t 4477 e1000_phy_reset(struct e1000_hw *hw) 4478 { 4479 int32_t ret_val; 4480 uint16_t phy_data; 4481 4482 DEBUGFUNC(); 4483 4484 /* In the case of the phy reset being blocked, it's not an error, we 4485 * simply return success without performing the reset. */ 4486 ret_val = e1000_check_phy_reset_block(hw); 4487 if (ret_val) 4488 return E1000_SUCCESS; 4489 4490 switch (hw->phy_type) { 4491 case e1000_phy_igp: 4492 case e1000_phy_igp_2: 4493 case e1000_phy_igp_3: 4494 case e1000_phy_ife: 4495 ret_val = e1000_phy_hw_reset(hw); 4496 if (ret_val) 4497 return ret_val; 4498 break; 4499 default: 4500 ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data); 4501 if (ret_val) 4502 return ret_val; 4503 4504 phy_data |= MII_CR_RESET; 4505 ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data); 4506 if (ret_val) 4507 return ret_val; 4508 4509 udelay(1); 4510 break; 4511 } 4512 4513 if (hw->phy_type == e1000_phy_igp || hw->phy_type == e1000_phy_igp_2) 4514 e1000_phy_init_script(hw); 4515 4516 return E1000_SUCCESS; 4517 } 4518 4519 static int e1000_set_phy_type (struct e1000_hw *hw) 4520 { 4521 DEBUGFUNC (); 4522 4523 if (hw->mac_type == e1000_undefined) 4524 return -E1000_ERR_PHY_TYPE; 4525 4526 switch (hw->phy_id) { 4527 case M88E1000_E_PHY_ID: 4528 case M88E1000_I_PHY_ID: 4529 case M88E1011_I_PHY_ID: 4530 case M88E1111_I_PHY_ID: 4531 hw->phy_type = e1000_phy_m88; 4532 break; 4533 case IGP01E1000_I_PHY_ID: 4534 if (hw->mac_type == e1000_82541 || 4535 hw->mac_type == e1000_82541_rev_2 || 4536 hw->mac_type == e1000_82547 || 4537 hw->mac_type == e1000_82547_rev_2) { 4538 hw->phy_type = e1000_phy_igp; 4539 hw->phy_type = e1000_phy_igp; 4540 break; 4541 } 4542 case IGP03E1000_E_PHY_ID: 4543 hw->phy_type = e1000_phy_igp_3; 4544 break; 4545 case IFE_E_PHY_ID: 4546 case IFE_PLUS_E_PHY_ID: 4547 case IFE_C_E_PHY_ID: 4548 hw->phy_type = e1000_phy_ife; 4549 break; 4550 case GG82563_E_PHY_ID: 4551 if (hw->mac_type == e1000_80003es2lan) { 4552 hw->phy_type = e1000_phy_gg82563; 4553 break; 4554 } 4555 /* Fall Through */ 4556 default: 4557 /* Should never have loaded on this device */ 4558 hw->phy_type = e1000_phy_undefined; 4559 return -E1000_ERR_PHY_TYPE; 4560 } 4561 4562 return E1000_SUCCESS; 4563 } 4564 4565 /****************************************************************************** 4566 * Probes the expected PHY address for known PHY IDs 4567 * 4568 * hw - Struct containing variables accessed by shared code 4569 ******************************************************************************/ 4570 static int32_t 4571 e1000_detect_gig_phy(struct e1000_hw *hw) 4572 { 4573 int32_t phy_init_status, ret_val; 4574 uint16_t phy_id_high, phy_id_low; 4575 boolean_t match = FALSE; 4576 4577 DEBUGFUNC(); 4578 4579 /* The 82571 firmware may still be configuring the PHY. In this 4580 * case, we cannot access the PHY until the configuration is done. So 4581 * we explicitly set the PHY values. */ 4582 if (hw->mac_type == e1000_82571 || 4583 hw->mac_type == e1000_82572) { 4584 hw->phy_id = IGP01E1000_I_PHY_ID; 4585 hw->phy_type = e1000_phy_igp_2; 4586 return E1000_SUCCESS; 4587 } 4588 4589 /* ESB-2 PHY reads require e1000_phy_gg82563 to be set because of a 4590 * work- around that forces PHY page 0 to be set or the reads fail. 4591 * The rest of the code in this routine uses e1000_read_phy_reg to 4592 * read the PHY ID. So for ESB-2 we need to have this set so our 4593 * reads won't fail. If the attached PHY is not a e1000_phy_gg82563, 4594 * the routines below will figure this out as well. */ 4595 if (hw->mac_type == e1000_80003es2lan) 4596 hw->phy_type = e1000_phy_gg82563; 4597 4598 /* Read the PHY ID Registers to identify which PHY is onboard. */ 4599 ret_val = e1000_read_phy_reg(hw, PHY_ID1, &phy_id_high); 4600 if (ret_val) 4601 return ret_val; 4602 4603 hw->phy_id = (uint32_t) (phy_id_high << 16); 4604 udelay(20); 4605 ret_val = e1000_read_phy_reg(hw, PHY_ID2, &phy_id_low); 4606 if (ret_val) 4607 return ret_val; 4608 4609 hw->phy_id |= (uint32_t) (phy_id_low & PHY_REVISION_MASK); 4610 hw->phy_revision = (uint32_t) phy_id_low & ~PHY_REVISION_MASK; 4611 4612 switch (hw->mac_type) { 4613 case e1000_82543: 4614 if (hw->phy_id == M88E1000_E_PHY_ID) 4615 match = TRUE; 4616 break; 4617 case e1000_82544: 4618 if (hw->phy_id == M88E1000_I_PHY_ID) 4619 match = TRUE; 4620 break; 4621 case e1000_82540: 4622 case e1000_82545: 4623 case e1000_82545_rev_3: 4624 case e1000_82546: 4625 case e1000_82546_rev_3: 4626 if (hw->phy_id == M88E1011_I_PHY_ID) 4627 match = TRUE; 4628 break; 4629 case e1000_82541: 4630 case e1000_82541_rev_2: 4631 case e1000_82547: 4632 case e1000_82547_rev_2: 4633 if(hw->phy_id == IGP01E1000_I_PHY_ID) 4634 match = TRUE; 4635 4636 break; 4637 case e1000_82573: 4638 if (hw->phy_id == M88E1111_I_PHY_ID) 4639 match = TRUE; 4640 break; 4641 case e1000_80003es2lan: 4642 if (hw->phy_id == GG82563_E_PHY_ID) 4643 match = TRUE; 4644 break; 4645 case e1000_ich8lan: 4646 if (hw->phy_id == IGP03E1000_E_PHY_ID) 4647 match = TRUE; 4648 if (hw->phy_id == IFE_E_PHY_ID) 4649 match = TRUE; 4650 if (hw->phy_id == IFE_PLUS_E_PHY_ID) 4651 match = TRUE; 4652 if (hw->phy_id == IFE_C_E_PHY_ID) 4653 match = TRUE; 4654 break; 4655 default: 4656 DEBUGOUT("Invalid MAC type %d\n", hw->mac_type); 4657 return -E1000_ERR_CONFIG; 4658 } 4659 4660 phy_init_status = e1000_set_phy_type(hw); 4661 4662 if ((match) && (phy_init_status == E1000_SUCCESS)) { 4663 DEBUGOUT("PHY ID 0x%X detected\n", hw->phy_id); 4664 return 0; 4665 } 4666 DEBUGOUT("Invalid PHY ID 0x%X\n", hw->phy_id); 4667 return -E1000_ERR_PHY; 4668 } 4669 4670 /***************************************************************************** 4671 * Set media type and TBI compatibility. 4672 * 4673 * hw - Struct containing variables accessed by shared code 4674 * **************************************************************************/ 4675 void 4676 e1000_set_media_type(struct e1000_hw *hw) 4677 { 4678 uint32_t status; 4679 4680 DEBUGFUNC(); 4681 4682 if (hw->mac_type != e1000_82543) { 4683 /* tbi_compatibility is only valid on 82543 */ 4684 hw->tbi_compatibility_en = FALSE; 4685 } 4686 4687 switch (hw->device_id) { 4688 case E1000_DEV_ID_82545GM_SERDES: 4689 case E1000_DEV_ID_82546GB_SERDES: 4690 case E1000_DEV_ID_82571EB_SERDES: 4691 case E1000_DEV_ID_82571EB_SERDES_DUAL: 4692 case E1000_DEV_ID_82571EB_SERDES_QUAD: 4693 case E1000_DEV_ID_82572EI_SERDES: 4694 case E1000_DEV_ID_80003ES2LAN_SERDES_DPT: 4695 hw->media_type = e1000_media_type_internal_serdes; 4696 break; 4697 default: 4698 switch (hw->mac_type) { 4699 case e1000_82542_rev2_0: 4700 case e1000_82542_rev2_1: 4701 hw->media_type = e1000_media_type_fiber; 4702 break; 4703 case e1000_ich8lan: 4704 case e1000_82573: 4705 /* The STATUS_TBIMODE bit is reserved or reused 4706 * for the this device. 4707 */ 4708 hw->media_type = e1000_media_type_copper; 4709 break; 4710 default: 4711 status = E1000_READ_REG(hw, STATUS); 4712 if (status & E1000_STATUS_TBIMODE) { 4713 hw->media_type = e1000_media_type_fiber; 4714 /* tbi_compatibility not valid on fiber */ 4715 hw->tbi_compatibility_en = FALSE; 4716 } else { 4717 hw->media_type = e1000_media_type_copper; 4718 } 4719 break; 4720 } 4721 } 4722 } 4723 4724 /** 4725 * e1000_sw_init - Initialize general software structures (struct e1000_adapter) 4726 * 4727 * e1000_sw_init initializes the Adapter private data structure. 4728 * Fields are initialized based on PCI device information and 4729 * OS network device settings (MTU size). 4730 **/ 4731 4732 static int 4733 e1000_sw_init(struct eth_device *nic, int cardnum) 4734 { 4735 struct e1000_hw *hw = (typeof(hw)) nic->priv; 4736 int result; 4737 4738 /* PCI config space info */ 4739 pci_read_config_word(hw->pdev, PCI_VENDOR_ID, &hw->vendor_id); 4740 pci_read_config_word(hw->pdev, PCI_DEVICE_ID, &hw->device_id); 4741 pci_read_config_word(hw->pdev, PCI_SUBSYSTEM_VENDOR_ID, 4742 &hw->subsystem_vendor_id); 4743 pci_read_config_word(hw->pdev, PCI_SUBSYSTEM_ID, &hw->subsystem_id); 4744 4745 pci_read_config_byte(hw->pdev, PCI_REVISION_ID, &hw->revision_id); 4746 pci_read_config_word(hw->pdev, PCI_COMMAND, &hw->pci_cmd_word); 4747 4748 /* identify the MAC */ 4749 result = e1000_set_mac_type(hw); 4750 if (result) { 4751 E1000_ERR("Unknown MAC Type\n"); 4752 return result; 4753 } 4754 4755 switch (hw->mac_type) { 4756 default: 4757 break; 4758 case e1000_82541: 4759 case e1000_82547: 4760 case e1000_82541_rev_2: 4761 case e1000_82547_rev_2: 4762 hw->phy_init_script = 1; 4763 break; 4764 } 4765 4766 /* lan a vs. lan b settings */ 4767 if (hw->mac_type == e1000_82546) 4768 /*this also works w/ multiple 82546 cards */ 4769 /*but not if they're intermingled /w other e1000s */ 4770 hw->lan_loc = (cardnum % 2) ? e1000_lan_b : e1000_lan_a; 4771 else 4772 hw->lan_loc = e1000_lan_a; 4773 4774 /* flow control settings */ 4775 hw->fc_high_water = E1000_FC_HIGH_THRESH; 4776 hw->fc_low_water = E1000_FC_LOW_THRESH; 4777 hw->fc_pause_time = E1000_FC_PAUSE_TIME; 4778 hw->fc_send_xon = 1; 4779 4780 /* Media type - copper or fiber */ 4781 e1000_set_media_type(hw); 4782 4783 if (hw->mac_type >= e1000_82543) { 4784 uint32_t status = E1000_READ_REG(hw, STATUS); 4785 4786 if (status & E1000_STATUS_TBIMODE) { 4787 DEBUGOUT("fiber interface\n"); 4788 hw->media_type = e1000_media_type_fiber; 4789 } else { 4790 DEBUGOUT("copper interface\n"); 4791 hw->media_type = e1000_media_type_copper; 4792 } 4793 } else { 4794 hw->media_type = e1000_media_type_fiber; 4795 } 4796 4797 hw->tbi_compatibility_en = TRUE; 4798 hw->wait_autoneg_complete = TRUE; 4799 if (hw->mac_type < e1000_82543) 4800 hw->report_tx_early = 0; 4801 else 4802 hw->report_tx_early = 1; 4803 4804 return E1000_SUCCESS; 4805 } 4806 4807 void 4808 fill_rx(struct e1000_hw *hw) 4809 { 4810 struct e1000_rx_desc *rd; 4811 4812 rx_last = rx_tail; 4813 rd = rx_base + rx_tail; 4814 rx_tail = (rx_tail + 1) % 8; 4815 memset(rd, 0, 16); 4816 rd->buffer_addr = cpu_to_le64((u32) & packet); 4817 E1000_WRITE_REG(hw, RDT, rx_tail); 4818 } 4819 4820 /** 4821 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset 4822 * @adapter: board private structure 4823 * 4824 * Configure the Tx unit of the MAC after a reset. 4825 **/ 4826 4827 static void 4828 e1000_configure_tx(struct e1000_hw *hw) 4829 { 4830 unsigned long ptr; 4831 unsigned long tctl; 4832 unsigned long tipg, tarc; 4833 uint32_t ipgr1, ipgr2; 4834 4835 ptr = (u32) tx_pool; 4836 if (ptr & 0xf) 4837 ptr = (ptr + 0x10) & (~0xf); 4838 4839 tx_base = (typeof(tx_base)) ptr; 4840 4841 E1000_WRITE_REG(hw, TDBAL, (u32) tx_base); 4842 E1000_WRITE_REG(hw, TDBAH, 0); 4843 4844 E1000_WRITE_REG(hw, TDLEN, 128); 4845 4846 /* Setup the HW Tx Head and Tail descriptor pointers */ 4847 E1000_WRITE_REG(hw, TDH, 0); 4848 E1000_WRITE_REG(hw, TDT, 0); 4849 tx_tail = 0; 4850 4851 /* Set the default values for the Tx Inter Packet Gap timer */ 4852 if (hw->mac_type <= e1000_82547_rev_2 && 4853 (hw->media_type == e1000_media_type_fiber || 4854 hw->media_type == e1000_media_type_internal_serdes)) 4855 tipg = DEFAULT_82543_TIPG_IPGT_FIBER; 4856 else 4857 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; 4858 4859 /* Set the default values for the Tx Inter Packet Gap timer */ 4860 switch (hw->mac_type) { 4861 case e1000_82542_rev2_0: 4862 case e1000_82542_rev2_1: 4863 tipg = DEFAULT_82542_TIPG_IPGT; 4864 ipgr1 = DEFAULT_82542_TIPG_IPGR1; 4865 ipgr2 = DEFAULT_82542_TIPG_IPGR2; 4866 break; 4867 case e1000_80003es2lan: 4868 ipgr1 = DEFAULT_82543_TIPG_IPGR1; 4869 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; 4870 break; 4871 default: 4872 ipgr1 = DEFAULT_82543_TIPG_IPGR1; 4873 ipgr2 = DEFAULT_82543_TIPG_IPGR2; 4874 break; 4875 } 4876 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; 4877 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; 4878 E1000_WRITE_REG(hw, TIPG, tipg); 4879 /* Program the Transmit Control Register */ 4880 tctl = E1000_READ_REG(hw, TCTL); 4881 tctl &= ~E1000_TCTL_CT; 4882 tctl |= E1000_TCTL_EN | E1000_TCTL_PSP | 4883 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); 4884 4885 if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) { 4886 tarc = E1000_READ_REG(hw, TARC0); 4887 /* set the speed mode bit, we'll clear it if we're not at 4888 * gigabit link later */ 4889 /* git bit can be set to 1*/ 4890 } else if (hw->mac_type == e1000_80003es2lan) { 4891 tarc = E1000_READ_REG(hw, TARC0); 4892 tarc |= 1; 4893 E1000_WRITE_REG(hw, TARC0, tarc); 4894 tarc = E1000_READ_REG(hw, TARC1); 4895 tarc |= 1; 4896 E1000_WRITE_REG(hw, TARC1, tarc); 4897 } 4898 4899 4900 e1000_config_collision_dist(hw); 4901 /* Setup Transmit Descriptor Settings for eop descriptor */ 4902 hw->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; 4903 4904 /* Need to set up RS bit */ 4905 if (hw->mac_type < e1000_82543) 4906 hw->txd_cmd |= E1000_TXD_CMD_RPS; 4907 else 4908 hw->txd_cmd |= E1000_TXD_CMD_RS; 4909 E1000_WRITE_REG(hw, TCTL, tctl); 4910 } 4911 4912 /** 4913 * e1000_setup_rctl - configure the receive control register 4914 * @adapter: Board private structure 4915 **/ 4916 static void 4917 e1000_setup_rctl(struct e1000_hw *hw) 4918 { 4919 uint32_t rctl; 4920 4921 rctl = E1000_READ_REG(hw, RCTL); 4922 4923 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); 4924 4925 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_LBM_NO 4926 | E1000_RCTL_RDMTS_HALF; /* | 4927 (hw.mc_filter_type << E1000_RCTL_MO_SHIFT); */ 4928 4929 if (hw->tbi_compatibility_on == 1) 4930 rctl |= E1000_RCTL_SBP; 4931 else 4932 rctl &= ~E1000_RCTL_SBP; 4933 4934 rctl &= ~(E1000_RCTL_SZ_4096); 4935 rctl |= E1000_RCTL_SZ_2048; 4936 rctl &= ~(E1000_RCTL_BSEX | E1000_RCTL_LPE); 4937 E1000_WRITE_REG(hw, RCTL, rctl); 4938 } 4939 4940 /** 4941 * e1000_configure_rx - Configure 8254x Receive Unit after Reset 4942 * @adapter: board private structure 4943 * 4944 * Configure the Rx unit of the MAC after a reset. 4945 **/ 4946 static void 4947 e1000_configure_rx(struct e1000_hw *hw) 4948 { 4949 unsigned long ptr; 4950 unsigned long rctl, ctrl_ext; 4951 rx_tail = 0; 4952 /* make sure receives are disabled while setting up the descriptors */ 4953 rctl = E1000_READ_REG(hw, RCTL); 4954 E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); 4955 if (hw->mac_type >= e1000_82540) { 4956 /* Set the interrupt throttling rate. Value is calculated 4957 * as DEFAULT_ITR = 1/(MAX_INTS_PER_SEC * 256ns) */ 4958 #define MAX_INTS_PER_SEC 8000 4959 #define DEFAULT_ITR 1000000000/(MAX_INTS_PER_SEC * 256) 4960 E1000_WRITE_REG(hw, ITR, DEFAULT_ITR); 4961 } 4962 4963 if (hw->mac_type >= e1000_82571) { 4964 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); 4965 /* Reset delay timers after every interrupt */ 4966 ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR; 4967 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); 4968 E1000_WRITE_FLUSH(hw); 4969 } 4970 /* Setup the Base and Length of the Rx Descriptor Ring */ 4971 ptr = (u32) rx_pool; 4972 if (ptr & 0xf) 4973 ptr = (ptr + 0x10) & (~0xf); 4974 rx_base = (typeof(rx_base)) ptr; 4975 E1000_WRITE_REG(hw, RDBAL, (u32) rx_base); 4976 E1000_WRITE_REG(hw, RDBAH, 0); 4977 4978 E1000_WRITE_REG(hw, RDLEN, 128); 4979 4980 /* Setup the HW Rx Head and Tail Descriptor Pointers */ 4981 E1000_WRITE_REG(hw, RDH, 0); 4982 E1000_WRITE_REG(hw, RDT, 0); 4983 /* Enable Receives */ 4984 4985 E1000_WRITE_REG(hw, RCTL, rctl); 4986 fill_rx(hw); 4987 } 4988 4989 /************************************************************************** 4990 POLL - Wait for a frame 4991 ***************************************************************************/ 4992 static int 4993 e1000_poll(struct eth_device *nic) 4994 { 4995 struct e1000_hw *hw = nic->priv; 4996 struct e1000_rx_desc *rd; 4997 /* return true if there's an ethernet packet ready to read */ 4998 rd = rx_base + rx_last; 4999 if (!(le32_to_cpu(rd->status)) & E1000_RXD_STAT_DD) 5000 return 0; 5001 /*DEBUGOUT("recv: packet len=%d \n", rd->length); */ 5002 NetReceive((uchar *)packet, le32_to_cpu(rd->length)); 5003 fill_rx(hw); 5004 return 1; 5005 } 5006 5007 /************************************************************************** 5008 TRANSMIT - Transmit a frame 5009 ***************************************************************************/ 5010 static int 5011 e1000_transmit(struct eth_device *nic, volatile void *packet, int length) 5012 { 5013 struct e1000_hw *hw = nic->priv; 5014 struct e1000_tx_desc *txp; 5015 int i = 0; 5016 5017 txp = tx_base + tx_tail; 5018 tx_tail = (tx_tail + 1) % 8; 5019 5020 txp->buffer_addr = cpu_to_le64(virt_to_bus(packet)); 5021 txp->lower.data = cpu_to_le32(hw->txd_cmd | length); 5022 txp->upper.data = 0; 5023 E1000_WRITE_REG(hw, TDT, tx_tail); 5024 5025 E1000_WRITE_FLUSH(hw); 5026 while (!(le32_to_cpu(txp->upper.data) & E1000_TXD_STAT_DD)) { 5027 if (i++ > TOUT_LOOP) { 5028 DEBUGOUT("e1000: tx timeout\n"); 5029 return 0; 5030 } 5031 udelay(10); /* give the nic a chance to write to the register */ 5032 } 5033 return 1; 5034 } 5035 5036 /*reset function*/ 5037 static inline int 5038 e1000_reset(struct eth_device *nic) 5039 { 5040 struct e1000_hw *hw = nic->priv; 5041 5042 e1000_reset_hw(hw); 5043 if (hw->mac_type >= e1000_82544) { 5044 E1000_WRITE_REG(hw, WUC, 0); 5045 } 5046 return e1000_init_hw(nic); 5047 } 5048 5049 /************************************************************************** 5050 DISABLE - Turn off ethernet interface 5051 ***************************************************************************/ 5052 static void 5053 e1000_disable(struct eth_device *nic) 5054 { 5055 struct e1000_hw *hw = nic->priv; 5056 5057 /* Turn off the ethernet interface */ 5058 E1000_WRITE_REG(hw, RCTL, 0); 5059 E1000_WRITE_REG(hw, TCTL, 0); 5060 5061 /* Clear the transmit ring */ 5062 E1000_WRITE_REG(hw, TDH, 0); 5063 E1000_WRITE_REG(hw, TDT, 0); 5064 5065 /* Clear the receive ring */ 5066 E1000_WRITE_REG(hw, RDH, 0); 5067 E1000_WRITE_REG(hw, RDT, 0); 5068 5069 /* put the card in its initial state */ 5070 #if 0 5071 E1000_WRITE_REG(hw, CTRL, E1000_CTRL_RST); 5072 #endif 5073 mdelay(10); 5074 5075 } 5076 5077 /************************************************************************** 5078 INIT - set up ethernet interface(s) 5079 ***************************************************************************/ 5080 static int 5081 e1000_init(struct eth_device *nic, bd_t * bis) 5082 { 5083 struct e1000_hw *hw = nic->priv; 5084 int ret_val = 0; 5085 5086 ret_val = e1000_reset(nic); 5087 if (ret_val < 0) { 5088 if ((ret_val == -E1000_ERR_NOLINK) || 5089 (ret_val == -E1000_ERR_TIMEOUT)) { 5090 E1000_ERR("Valid Link not detected\n"); 5091 } else { 5092 E1000_ERR("Hardware Initialization Failed\n"); 5093 } 5094 return 0; 5095 } 5096 e1000_configure_tx(hw); 5097 e1000_setup_rctl(hw); 5098 e1000_configure_rx(hw); 5099 return 1; 5100 } 5101 5102 /****************************************************************************** 5103 * Gets the current PCI bus type of hardware 5104 * 5105 * hw - Struct containing variables accessed by shared code 5106 *****************************************************************************/ 5107 void e1000_get_bus_type(struct e1000_hw *hw) 5108 { 5109 uint32_t status; 5110 5111 switch (hw->mac_type) { 5112 case e1000_82542_rev2_0: 5113 case e1000_82542_rev2_1: 5114 hw->bus_type = e1000_bus_type_pci; 5115 break; 5116 case e1000_82571: 5117 case e1000_82572: 5118 case e1000_82573: 5119 case e1000_80003es2lan: 5120 hw->bus_type = e1000_bus_type_pci_express; 5121 break; 5122 case e1000_ich8lan: 5123 hw->bus_type = e1000_bus_type_pci_express; 5124 break; 5125 default: 5126 status = E1000_READ_REG(hw, STATUS); 5127 hw->bus_type = (status & E1000_STATUS_PCIX_MODE) ? 5128 e1000_bus_type_pcix : e1000_bus_type_pci; 5129 break; 5130 } 5131 } 5132 5133 /************************************************************************** 5134 PROBE - Look for an adapter, this routine's visible to the outside 5135 You should omit the last argument struct pci_device * for a non-PCI NIC 5136 ***************************************************************************/ 5137 int 5138 e1000_initialize(bd_t * bis) 5139 { 5140 pci_dev_t devno; 5141 int card_number = 0; 5142 struct eth_device *nic = NULL; 5143 struct e1000_hw *hw = NULL; 5144 u32 iobase; 5145 int idx = 0; 5146 u32 PciCommandWord; 5147 5148 while (1) { /* Find PCI device(s) */ 5149 if ((devno = pci_find_devices(supported, idx++)) < 0) { 5150 break; 5151 } 5152 5153 pci_read_config_dword(devno, PCI_BASE_ADDRESS_0, &iobase); 5154 iobase &= ~0xf; /* Mask the bits that say "this is an io addr" */ 5155 DEBUGOUT("e1000#%d: iobase 0x%08x\n", card_number, iobase); 5156 5157 pci_write_config_dword(devno, PCI_COMMAND, 5158 PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); 5159 /* Check if I/O accesses and Bus Mastering are enabled. */ 5160 pci_read_config_dword(devno, PCI_COMMAND, &PciCommandWord); 5161 if (!(PciCommandWord & PCI_COMMAND_MEMORY)) { 5162 printf("Error: Can not enable MEM access.\n"); 5163 continue; 5164 } else if (!(PciCommandWord & PCI_COMMAND_MASTER)) { 5165 printf("Error: Can not enable Bus Mastering.\n"); 5166 continue; 5167 } 5168 5169 nic = (struct eth_device *) malloc(sizeof (*nic)); 5170 hw = (struct e1000_hw *) malloc(sizeof (*hw)); 5171 hw->pdev = devno; 5172 nic->priv = hw; 5173 nic->iobase = bus_to_phys(devno, iobase); 5174 5175 sprintf(nic->name, "e1000#%d", card_number); 5176 5177 /* Are these variables needed? */ 5178 hw->fc = e1000_fc_default; 5179 hw->original_fc = e1000_fc_default; 5180 hw->autoneg_failed = 0; 5181 hw->autoneg = 1; 5182 hw->get_link_status = TRUE; 5183 hw->hw_addr = (typeof(hw->hw_addr)) iobase; 5184 hw->mac_type = e1000_undefined; 5185 5186 /* MAC and Phy settings */ 5187 if (e1000_sw_init(nic, card_number) < 0) { 5188 free(hw); 5189 free(nic); 5190 return 0; 5191 } 5192 if (e1000_check_phy_reset_block(hw)) 5193 printf("phy reset block error \n"); 5194 e1000_reset_hw(hw); 5195 #if !(defined(CONFIG_AP1000) || defined(CONFIG_MVBC_1G)) 5196 if (e1000_init_eeprom_params(hw)) { 5197 printf("The EEPROM Checksum Is Not Valid\n"); 5198 free(hw); 5199 free(nic); 5200 return 0; 5201 } 5202 if (e1000_validate_eeprom_checksum(nic) < 0) { 5203 printf("The EEPROM Checksum Is Not Valid\n"); 5204 free(hw); 5205 free(nic); 5206 return 0; 5207 } 5208 #endif 5209 e1000_read_mac_addr(nic); 5210 5211 /* get the bus type information */ 5212 e1000_get_bus_type(hw); 5213 5214 printf("e1000: %02x:%02x:%02x:%02x:%02x:%02x\n", 5215 nic->enetaddr[0], nic->enetaddr[1], nic->enetaddr[2], 5216 nic->enetaddr[3], nic->enetaddr[4], nic->enetaddr[5]); 5217 5218 nic->init = e1000_init; 5219 nic->recv = e1000_poll; 5220 nic->send = e1000_transmit; 5221 nic->halt = e1000_disable; 5222 5223 eth_register(nic); 5224 5225 card_number++; 5226 } 5227 return card_number; 5228 } 5229