1 /******************************************************************************* 2 3 Intel 10 Gigabit PCI Express Linux driver 4 Copyright(c) 1999 - 2014 Intel Corporation. 5 6 This program is free software; you can redistribute it and/or modify it 7 under the terms and conditions of the GNU General Public License, 8 version 2, as published by the Free Software Foundation. 9 10 This program is distributed in the hope it will be useful, but WITHOUT 11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13 more details. 14 15 You should have received a copy of the GNU General Public License along with 16 this program; if not, write to the Free Software Foundation, Inc., 17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 18 19 The full GNU General Public License is included in this distribution in 20 the file called "COPYING". 21 22 Contact Information: 23 Linux NICS <linux.nics@intel.com> 24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 26 27 *******************************************************************************/ 28 29 #include <linux/pci.h> 30 #include <linux/delay.h> 31 #include <linux/sched.h> 32 #include <linux/netdevice.h> 33 34 #include "ixgbe.h" 35 #include "ixgbe_common.h" 36 #include "ixgbe_phy.h" 37 38 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw); 39 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw); 40 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw); 41 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw); 42 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw); 43 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data, 44 u16 count); 45 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count); 46 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec); 47 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec); 48 static void ixgbe_release_eeprom(struct ixgbe_hw *hw); 49 50 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr); 51 static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg); 52 static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset, 53 u16 words, u16 *data); 54 static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset, 55 u16 words, u16 *data); 56 static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw, 57 u16 offset); 58 static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw); 59 60 /** 61 * ixgbe_device_supports_autoneg_fc - Check if phy supports autoneg flow 62 * control 63 * @hw: pointer to hardware structure 64 * 65 * There are several phys that do not support autoneg flow control. This 66 * function check the device id to see if the associated phy supports 67 * autoneg flow control. 68 **/ 69 bool ixgbe_device_supports_autoneg_fc(struct ixgbe_hw *hw) 70 { 71 bool supported = false; 72 ixgbe_link_speed speed; 73 bool link_up; 74 75 switch (hw->phy.media_type) { 76 case ixgbe_media_type_fiber: 77 hw->mac.ops.check_link(hw, &speed, &link_up, false); 78 /* if link is down, assume supported */ 79 if (link_up) 80 supported = speed == IXGBE_LINK_SPEED_1GB_FULL ? 81 true : false; 82 else 83 supported = true; 84 break; 85 case ixgbe_media_type_backplane: 86 supported = true; 87 break; 88 case ixgbe_media_type_copper: 89 /* only some copper devices support flow control autoneg */ 90 switch (hw->device_id) { 91 case IXGBE_DEV_ID_82599_T3_LOM: 92 case IXGBE_DEV_ID_X540T: 93 case IXGBE_DEV_ID_X540T1: 94 supported = true; 95 break; 96 default: 97 break; 98 } 99 default: 100 break; 101 } 102 103 return supported; 104 } 105 106 /** 107 * ixgbe_setup_fc - Set up flow control 108 * @hw: pointer to hardware structure 109 * 110 * Called at init time to set up flow control. 111 **/ 112 static s32 ixgbe_setup_fc(struct ixgbe_hw *hw) 113 { 114 s32 ret_val = 0; 115 u32 reg = 0, reg_bp = 0; 116 u16 reg_cu = 0; 117 bool locked = false; 118 119 /* 120 * Validate the requested mode. Strict IEEE mode does not allow 121 * ixgbe_fc_rx_pause because it will cause us to fail at UNH. 122 */ 123 if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) { 124 hw_dbg(hw, "ixgbe_fc_rx_pause not valid in strict IEEE mode\n"); 125 return IXGBE_ERR_INVALID_LINK_SETTINGS; 126 } 127 128 /* 129 * 10gig parts do not have a word in the EEPROM to determine the 130 * default flow control setting, so we explicitly set it to full. 131 */ 132 if (hw->fc.requested_mode == ixgbe_fc_default) 133 hw->fc.requested_mode = ixgbe_fc_full; 134 135 /* 136 * Set up the 1G and 10G flow control advertisement registers so the 137 * HW will be able to do fc autoneg once the cable is plugged in. If 138 * we link at 10G, the 1G advertisement is harmless and vice versa. 139 */ 140 switch (hw->phy.media_type) { 141 case ixgbe_media_type_backplane: 142 /* some MAC's need RMW protection on AUTOC */ 143 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, ®_bp); 144 if (ret_val) 145 return ret_val; 146 147 /* only backplane uses autoc so fall though */ 148 case ixgbe_media_type_fiber: 149 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA); 150 151 break; 152 case ixgbe_media_type_copper: 153 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE, 154 MDIO_MMD_AN, ®_cu); 155 break; 156 default: 157 break; 158 } 159 160 /* 161 * The possible values of fc.requested_mode are: 162 * 0: Flow control is completely disabled 163 * 1: Rx flow control is enabled (we can receive pause frames, 164 * but not send pause frames). 165 * 2: Tx flow control is enabled (we can send pause frames but 166 * we do not support receiving pause frames). 167 * 3: Both Rx and Tx flow control (symmetric) are enabled. 168 * other: Invalid. 169 */ 170 switch (hw->fc.requested_mode) { 171 case ixgbe_fc_none: 172 /* Flow control completely disabled by software override. */ 173 reg &= ~(IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE); 174 if (hw->phy.media_type == ixgbe_media_type_backplane) 175 reg_bp &= ~(IXGBE_AUTOC_SYM_PAUSE | 176 IXGBE_AUTOC_ASM_PAUSE); 177 else if (hw->phy.media_type == ixgbe_media_type_copper) 178 reg_cu &= ~(IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE); 179 break; 180 case ixgbe_fc_tx_pause: 181 /* 182 * Tx Flow control is enabled, and Rx Flow control is 183 * disabled by software override. 184 */ 185 reg |= IXGBE_PCS1GANA_ASM_PAUSE; 186 reg &= ~IXGBE_PCS1GANA_SYM_PAUSE; 187 if (hw->phy.media_type == ixgbe_media_type_backplane) { 188 reg_bp |= IXGBE_AUTOC_ASM_PAUSE; 189 reg_bp &= ~IXGBE_AUTOC_SYM_PAUSE; 190 } else if (hw->phy.media_type == ixgbe_media_type_copper) { 191 reg_cu |= IXGBE_TAF_ASM_PAUSE; 192 reg_cu &= ~IXGBE_TAF_SYM_PAUSE; 193 } 194 break; 195 case ixgbe_fc_rx_pause: 196 /* 197 * Rx Flow control is enabled and Tx Flow control is 198 * disabled by software override. Since there really 199 * isn't a way to advertise that we are capable of RX 200 * Pause ONLY, we will advertise that we support both 201 * symmetric and asymmetric Rx PAUSE, as such we fall 202 * through to the fc_full statement. Later, we will 203 * disable the adapter's ability to send PAUSE frames. 204 */ 205 case ixgbe_fc_full: 206 /* Flow control (both Rx and Tx) is enabled by SW override. */ 207 reg |= IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE; 208 if (hw->phy.media_type == ixgbe_media_type_backplane) 209 reg_bp |= IXGBE_AUTOC_SYM_PAUSE | 210 IXGBE_AUTOC_ASM_PAUSE; 211 else if (hw->phy.media_type == ixgbe_media_type_copper) 212 reg_cu |= IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE; 213 break; 214 default: 215 hw_dbg(hw, "Flow control param set incorrectly\n"); 216 return IXGBE_ERR_CONFIG; 217 } 218 219 if (hw->mac.type != ixgbe_mac_X540) { 220 /* 221 * Enable auto-negotiation between the MAC & PHY; 222 * the MAC will advertise clause 37 flow control. 223 */ 224 IXGBE_WRITE_REG(hw, IXGBE_PCS1GANA, reg); 225 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GLCTL); 226 227 /* Disable AN timeout */ 228 if (hw->fc.strict_ieee) 229 reg &= ~IXGBE_PCS1GLCTL_AN_1G_TIMEOUT_EN; 230 231 IXGBE_WRITE_REG(hw, IXGBE_PCS1GLCTL, reg); 232 hw_dbg(hw, "Set up FC; PCS1GLCTL = 0x%08X\n", reg); 233 } 234 235 /* 236 * AUTOC restart handles negotiation of 1G and 10G on backplane 237 * and copper. There is no need to set the PCS1GCTL register. 238 * 239 */ 240 if (hw->phy.media_type == ixgbe_media_type_backplane) { 241 /* Need the SW/FW semaphore around AUTOC writes if 82599 and 242 * LESM is on, likewise reset_pipeline requries the lock as 243 * it also writes AUTOC. 244 */ 245 ret_val = hw->mac.ops.prot_autoc_write(hw, reg_bp, locked); 246 if (ret_val) 247 return ret_val; 248 249 } else if ((hw->phy.media_type == ixgbe_media_type_copper) && 250 ixgbe_device_supports_autoneg_fc(hw)) { 251 hw->phy.ops.write_reg(hw, MDIO_AN_ADVERTISE, 252 MDIO_MMD_AN, reg_cu); 253 } 254 255 hw_dbg(hw, "Set up FC; IXGBE_AUTOC = 0x%08X\n", reg); 256 return ret_val; 257 } 258 259 /** 260 * ixgbe_start_hw_generic - Prepare hardware for Tx/Rx 261 * @hw: pointer to hardware structure 262 * 263 * Starts the hardware by filling the bus info structure and media type, clears 264 * all on chip counters, initializes receive address registers, multicast 265 * table, VLAN filter table, calls routine to set up link and flow control 266 * settings, and leaves transmit and receive units disabled and uninitialized 267 **/ 268 s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw) 269 { 270 s32 ret_val; 271 u32 ctrl_ext; 272 273 /* Set the media type */ 274 hw->phy.media_type = hw->mac.ops.get_media_type(hw); 275 276 /* Identify the PHY */ 277 hw->phy.ops.identify(hw); 278 279 /* Clear the VLAN filter table */ 280 hw->mac.ops.clear_vfta(hw); 281 282 /* Clear statistics registers */ 283 hw->mac.ops.clear_hw_cntrs(hw); 284 285 /* Set No Snoop Disable */ 286 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT); 287 ctrl_ext |= IXGBE_CTRL_EXT_NS_DIS; 288 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext); 289 IXGBE_WRITE_FLUSH(hw); 290 291 /* Setup flow control */ 292 ret_val = ixgbe_setup_fc(hw); 293 if (!ret_val) 294 return 0; 295 296 /* Clear adapter stopped flag */ 297 hw->adapter_stopped = false; 298 299 return ret_val; 300 } 301 302 /** 303 * ixgbe_start_hw_gen2 - Init sequence for common device family 304 * @hw: pointer to hw structure 305 * 306 * Performs the init sequence common to the second generation 307 * of 10 GbE devices. 308 * Devices in the second generation: 309 * 82599 310 * X540 311 **/ 312 s32 ixgbe_start_hw_gen2(struct ixgbe_hw *hw) 313 { 314 u32 i; 315 316 /* Clear the rate limiters */ 317 for (i = 0; i < hw->mac.max_tx_queues; i++) { 318 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, i); 319 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, 0); 320 } 321 IXGBE_WRITE_FLUSH(hw); 322 323 #ifndef CONFIG_SPARC 324 /* Disable relaxed ordering */ 325 for (i = 0; i < hw->mac.max_tx_queues; i++) { 326 u32 regval; 327 328 regval = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(i)); 329 regval &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN; 330 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(i), regval); 331 } 332 333 for (i = 0; i < hw->mac.max_rx_queues; i++) { 334 u32 regval; 335 336 regval = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i)); 337 regval &= ~(IXGBE_DCA_RXCTRL_DATA_WRO_EN | 338 IXGBE_DCA_RXCTRL_HEAD_WRO_EN); 339 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(i), regval); 340 } 341 #endif 342 return 0; 343 } 344 345 /** 346 * ixgbe_init_hw_generic - Generic hardware initialization 347 * @hw: pointer to hardware structure 348 * 349 * Initialize the hardware by resetting the hardware, filling the bus info 350 * structure and media type, clears all on chip counters, initializes receive 351 * address registers, multicast table, VLAN filter table, calls routine to set 352 * up link and flow control settings, and leaves transmit and receive units 353 * disabled and uninitialized 354 **/ 355 s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw) 356 { 357 s32 status; 358 359 /* Reset the hardware */ 360 status = hw->mac.ops.reset_hw(hw); 361 362 if (status == 0) { 363 /* Start the HW */ 364 status = hw->mac.ops.start_hw(hw); 365 } 366 367 return status; 368 } 369 370 /** 371 * ixgbe_clear_hw_cntrs_generic - Generic clear hardware counters 372 * @hw: pointer to hardware structure 373 * 374 * Clears all hardware statistics counters by reading them from the hardware 375 * Statistics counters are clear on read. 376 **/ 377 s32 ixgbe_clear_hw_cntrs_generic(struct ixgbe_hw *hw) 378 { 379 u16 i = 0; 380 381 IXGBE_READ_REG(hw, IXGBE_CRCERRS); 382 IXGBE_READ_REG(hw, IXGBE_ILLERRC); 383 IXGBE_READ_REG(hw, IXGBE_ERRBC); 384 IXGBE_READ_REG(hw, IXGBE_MSPDC); 385 for (i = 0; i < 8; i++) 386 IXGBE_READ_REG(hw, IXGBE_MPC(i)); 387 388 IXGBE_READ_REG(hw, IXGBE_MLFC); 389 IXGBE_READ_REG(hw, IXGBE_MRFC); 390 IXGBE_READ_REG(hw, IXGBE_RLEC); 391 IXGBE_READ_REG(hw, IXGBE_LXONTXC); 392 IXGBE_READ_REG(hw, IXGBE_LXOFFTXC); 393 if (hw->mac.type >= ixgbe_mac_82599EB) { 394 IXGBE_READ_REG(hw, IXGBE_LXONRXCNT); 395 IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT); 396 } else { 397 IXGBE_READ_REG(hw, IXGBE_LXONRXC); 398 IXGBE_READ_REG(hw, IXGBE_LXOFFRXC); 399 } 400 401 for (i = 0; i < 8; i++) { 402 IXGBE_READ_REG(hw, IXGBE_PXONTXC(i)); 403 IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i)); 404 if (hw->mac.type >= ixgbe_mac_82599EB) { 405 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i)); 406 IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i)); 407 } else { 408 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i)); 409 IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i)); 410 } 411 } 412 if (hw->mac.type >= ixgbe_mac_82599EB) 413 for (i = 0; i < 8; i++) 414 IXGBE_READ_REG(hw, IXGBE_PXON2OFFCNT(i)); 415 IXGBE_READ_REG(hw, IXGBE_PRC64); 416 IXGBE_READ_REG(hw, IXGBE_PRC127); 417 IXGBE_READ_REG(hw, IXGBE_PRC255); 418 IXGBE_READ_REG(hw, IXGBE_PRC511); 419 IXGBE_READ_REG(hw, IXGBE_PRC1023); 420 IXGBE_READ_REG(hw, IXGBE_PRC1522); 421 IXGBE_READ_REG(hw, IXGBE_GPRC); 422 IXGBE_READ_REG(hw, IXGBE_BPRC); 423 IXGBE_READ_REG(hw, IXGBE_MPRC); 424 IXGBE_READ_REG(hw, IXGBE_GPTC); 425 IXGBE_READ_REG(hw, IXGBE_GORCL); 426 IXGBE_READ_REG(hw, IXGBE_GORCH); 427 IXGBE_READ_REG(hw, IXGBE_GOTCL); 428 IXGBE_READ_REG(hw, IXGBE_GOTCH); 429 if (hw->mac.type == ixgbe_mac_82598EB) 430 for (i = 0; i < 8; i++) 431 IXGBE_READ_REG(hw, IXGBE_RNBC(i)); 432 IXGBE_READ_REG(hw, IXGBE_RUC); 433 IXGBE_READ_REG(hw, IXGBE_RFC); 434 IXGBE_READ_REG(hw, IXGBE_ROC); 435 IXGBE_READ_REG(hw, IXGBE_RJC); 436 IXGBE_READ_REG(hw, IXGBE_MNGPRC); 437 IXGBE_READ_REG(hw, IXGBE_MNGPDC); 438 IXGBE_READ_REG(hw, IXGBE_MNGPTC); 439 IXGBE_READ_REG(hw, IXGBE_TORL); 440 IXGBE_READ_REG(hw, IXGBE_TORH); 441 IXGBE_READ_REG(hw, IXGBE_TPR); 442 IXGBE_READ_REG(hw, IXGBE_TPT); 443 IXGBE_READ_REG(hw, IXGBE_PTC64); 444 IXGBE_READ_REG(hw, IXGBE_PTC127); 445 IXGBE_READ_REG(hw, IXGBE_PTC255); 446 IXGBE_READ_REG(hw, IXGBE_PTC511); 447 IXGBE_READ_REG(hw, IXGBE_PTC1023); 448 IXGBE_READ_REG(hw, IXGBE_PTC1522); 449 IXGBE_READ_REG(hw, IXGBE_MPTC); 450 IXGBE_READ_REG(hw, IXGBE_BPTC); 451 for (i = 0; i < 16; i++) { 452 IXGBE_READ_REG(hw, IXGBE_QPRC(i)); 453 IXGBE_READ_REG(hw, IXGBE_QPTC(i)); 454 if (hw->mac.type >= ixgbe_mac_82599EB) { 455 IXGBE_READ_REG(hw, IXGBE_QBRC_L(i)); 456 IXGBE_READ_REG(hw, IXGBE_QBRC_H(i)); 457 IXGBE_READ_REG(hw, IXGBE_QBTC_L(i)); 458 IXGBE_READ_REG(hw, IXGBE_QBTC_H(i)); 459 IXGBE_READ_REG(hw, IXGBE_QPRDC(i)); 460 } else { 461 IXGBE_READ_REG(hw, IXGBE_QBRC(i)); 462 IXGBE_READ_REG(hw, IXGBE_QBTC(i)); 463 } 464 } 465 466 if (hw->mac.type == ixgbe_mac_X540) { 467 if (hw->phy.id == 0) 468 hw->phy.ops.identify(hw); 469 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECL, MDIO_MMD_PCS, &i); 470 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECH, MDIO_MMD_PCS, &i); 471 hw->phy.ops.read_reg(hw, IXGBE_LDPCECL, MDIO_MMD_PCS, &i); 472 hw->phy.ops.read_reg(hw, IXGBE_LDPCECH, MDIO_MMD_PCS, &i); 473 } 474 475 return 0; 476 } 477 478 /** 479 * ixgbe_read_pba_string_generic - Reads part number string from EEPROM 480 * @hw: pointer to hardware structure 481 * @pba_num: stores the part number string from the EEPROM 482 * @pba_num_size: part number string buffer length 483 * 484 * Reads the part number string from the EEPROM. 485 **/ 486 s32 ixgbe_read_pba_string_generic(struct ixgbe_hw *hw, u8 *pba_num, 487 u32 pba_num_size) 488 { 489 s32 ret_val; 490 u16 data; 491 u16 pba_ptr; 492 u16 offset; 493 u16 length; 494 495 if (pba_num == NULL) { 496 hw_dbg(hw, "PBA string buffer was null\n"); 497 return IXGBE_ERR_INVALID_ARGUMENT; 498 } 499 500 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM0_PTR, &data); 501 if (ret_val) { 502 hw_dbg(hw, "NVM Read Error\n"); 503 return ret_val; 504 } 505 506 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM1_PTR, &pba_ptr); 507 if (ret_val) { 508 hw_dbg(hw, "NVM Read Error\n"); 509 return ret_val; 510 } 511 512 /* 513 * if data is not ptr guard the PBA must be in legacy format which 514 * means pba_ptr is actually our second data word for the PBA number 515 * and we can decode it into an ascii string 516 */ 517 if (data != IXGBE_PBANUM_PTR_GUARD) { 518 hw_dbg(hw, "NVM PBA number is not stored as string\n"); 519 520 /* we will need 11 characters to store the PBA */ 521 if (pba_num_size < 11) { 522 hw_dbg(hw, "PBA string buffer too small\n"); 523 return IXGBE_ERR_NO_SPACE; 524 } 525 526 /* extract hex string from data and pba_ptr */ 527 pba_num[0] = (data >> 12) & 0xF; 528 pba_num[1] = (data >> 8) & 0xF; 529 pba_num[2] = (data >> 4) & 0xF; 530 pba_num[3] = data & 0xF; 531 pba_num[4] = (pba_ptr >> 12) & 0xF; 532 pba_num[5] = (pba_ptr >> 8) & 0xF; 533 pba_num[6] = '-'; 534 pba_num[7] = 0; 535 pba_num[8] = (pba_ptr >> 4) & 0xF; 536 pba_num[9] = pba_ptr & 0xF; 537 538 /* put a null character on the end of our string */ 539 pba_num[10] = '\0'; 540 541 /* switch all the data but the '-' to hex char */ 542 for (offset = 0; offset < 10; offset++) { 543 if (pba_num[offset] < 0xA) 544 pba_num[offset] += '0'; 545 else if (pba_num[offset] < 0x10) 546 pba_num[offset] += 'A' - 0xA; 547 } 548 549 return 0; 550 } 551 552 ret_val = hw->eeprom.ops.read(hw, pba_ptr, &length); 553 if (ret_val) { 554 hw_dbg(hw, "NVM Read Error\n"); 555 return ret_val; 556 } 557 558 if (length == 0xFFFF || length == 0) { 559 hw_dbg(hw, "NVM PBA number section invalid length\n"); 560 return IXGBE_ERR_PBA_SECTION; 561 } 562 563 /* check if pba_num buffer is big enough */ 564 if (pba_num_size < (((u32)length * 2) - 1)) { 565 hw_dbg(hw, "PBA string buffer too small\n"); 566 return IXGBE_ERR_NO_SPACE; 567 } 568 569 /* trim pba length from start of string */ 570 pba_ptr++; 571 length--; 572 573 for (offset = 0; offset < length; offset++) { 574 ret_val = hw->eeprom.ops.read(hw, pba_ptr + offset, &data); 575 if (ret_val) { 576 hw_dbg(hw, "NVM Read Error\n"); 577 return ret_val; 578 } 579 pba_num[offset * 2] = (u8)(data >> 8); 580 pba_num[(offset * 2) + 1] = (u8)(data & 0xFF); 581 } 582 pba_num[offset * 2] = '\0'; 583 584 return 0; 585 } 586 587 /** 588 * ixgbe_get_mac_addr_generic - Generic get MAC address 589 * @hw: pointer to hardware structure 590 * @mac_addr: Adapter MAC address 591 * 592 * Reads the adapter's MAC address from first Receive Address Register (RAR0) 593 * A reset of the adapter must be performed prior to calling this function 594 * in order for the MAC address to have been loaded from the EEPROM into RAR0 595 **/ 596 s32 ixgbe_get_mac_addr_generic(struct ixgbe_hw *hw, u8 *mac_addr) 597 { 598 u32 rar_high; 599 u32 rar_low; 600 u16 i; 601 602 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(0)); 603 rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(0)); 604 605 for (i = 0; i < 4; i++) 606 mac_addr[i] = (u8)(rar_low >> (i*8)); 607 608 for (i = 0; i < 2; i++) 609 mac_addr[i+4] = (u8)(rar_high >> (i*8)); 610 611 return 0; 612 } 613 614 enum ixgbe_bus_width ixgbe_convert_bus_width(u16 link_status) 615 { 616 switch (link_status & IXGBE_PCI_LINK_WIDTH) { 617 case IXGBE_PCI_LINK_WIDTH_1: 618 return ixgbe_bus_width_pcie_x1; 619 case IXGBE_PCI_LINK_WIDTH_2: 620 return ixgbe_bus_width_pcie_x2; 621 case IXGBE_PCI_LINK_WIDTH_4: 622 return ixgbe_bus_width_pcie_x4; 623 case IXGBE_PCI_LINK_WIDTH_8: 624 return ixgbe_bus_width_pcie_x8; 625 default: 626 return ixgbe_bus_width_unknown; 627 } 628 } 629 630 enum ixgbe_bus_speed ixgbe_convert_bus_speed(u16 link_status) 631 { 632 switch (link_status & IXGBE_PCI_LINK_SPEED) { 633 case IXGBE_PCI_LINK_SPEED_2500: 634 return ixgbe_bus_speed_2500; 635 case IXGBE_PCI_LINK_SPEED_5000: 636 return ixgbe_bus_speed_5000; 637 case IXGBE_PCI_LINK_SPEED_8000: 638 return ixgbe_bus_speed_8000; 639 default: 640 return ixgbe_bus_speed_unknown; 641 } 642 } 643 644 /** 645 * ixgbe_get_bus_info_generic - Generic set PCI bus info 646 * @hw: pointer to hardware structure 647 * 648 * Sets the PCI bus info (speed, width, type) within the ixgbe_hw structure 649 **/ 650 s32 ixgbe_get_bus_info_generic(struct ixgbe_hw *hw) 651 { 652 u16 link_status; 653 654 hw->bus.type = ixgbe_bus_type_pci_express; 655 656 /* Get the negotiated link width and speed from PCI config space */ 657 link_status = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_LINK_STATUS); 658 659 hw->bus.width = ixgbe_convert_bus_width(link_status); 660 hw->bus.speed = ixgbe_convert_bus_speed(link_status); 661 662 hw->mac.ops.set_lan_id(hw); 663 664 return 0; 665 } 666 667 /** 668 * ixgbe_set_lan_id_multi_port_pcie - Set LAN id for PCIe multiple port devices 669 * @hw: pointer to the HW structure 670 * 671 * Determines the LAN function id by reading memory-mapped registers 672 * and swaps the port value if requested. 673 **/ 674 void ixgbe_set_lan_id_multi_port_pcie(struct ixgbe_hw *hw) 675 { 676 struct ixgbe_bus_info *bus = &hw->bus; 677 u32 reg; 678 679 reg = IXGBE_READ_REG(hw, IXGBE_STATUS); 680 bus->func = (reg & IXGBE_STATUS_LAN_ID) >> IXGBE_STATUS_LAN_ID_SHIFT; 681 bus->lan_id = bus->func; 682 683 /* check for a port swap */ 684 reg = IXGBE_READ_REG(hw, IXGBE_FACTPS); 685 if (reg & IXGBE_FACTPS_LFS) 686 bus->func ^= 0x1; 687 } 688 689 /** 690 * ixgbe_stop_adapter_generic - Generic stop Tx/Rx units 691 * @hw: pointer to hardware structure 692 * 693 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts, 694 * disables transmit and receive units. The adapter_stopped flag is used by 695 * the shared code and drivers to determine if the adapter is in a stopped 696 * state and should not touch the hardware. 697 **/ 698 s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw) 699 { 700 u32 reg_val; 701 u16 i; 702 703 /* 704 * Set the adapter_stopped flag so other driver functions stop touching 705 * the hardware 706 */ 707 hw->adapter_stopped = true; 708 709 /* Disable the receive unit */ 710 hw->mac.ops.disable_rx(hw); 711 712 /* Clear interrupt mask to stop interrupts from being generated */ 713 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK); 714 715 /* Clear any pending interrupts, flush previous writes */ 716 IXGBE_READ_REG(hw, IXGBE_EICR); 717 718 /* Disable the transmit unit. Each queue must be disabled. */ 719 for (i = 0; i < hw->mac.max_tx_queues; i++) 720 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), IXGBE_TXDCTL_SWFLSH); 721 722 /* Disable the receive unit by stopping each queue */ 723 for (i = 0; i < hw->mac.max_rx_queues; i++) { 724 reg_val = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i)); 725 reg_val &= ~IXGBE_RXDCTL_ENABLE; 726 reg_val |= IXGBE_RXDCTL_SWFLSH; 727 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(i), reg_val); 728 } 729 730 /* flush all queues disables */ 731 IXGBE_WRITE_FLUSH(hw); 732 usleep_range(1000, 2000); 733 734 /* 735 * Prevent the PCI-E bus from from hanging by disabling PCI-E master 736 * access and verify no pending requests 737 */ 738 return ixgbe_disable_pcie_master(hw); 739 } 740 741 /** 742 * ixgbe_led_on_generic - Turns on the software controllable LEDs. 743 * @hw: pointer to hardware structure 744 * @index: led number to turn on 745 **/ 746 s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index) 747 { 748 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL); 749 750 /* To turn on the LED, set mode to ON. */ 751 led_reg &= ~IXGBE_LED_MODE_MASK(index); 752 led_reg |= IXGBE_LED_ON << IXGBE_LED_MODE_SHIFT(index); 753 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg); 754 IXGBE_WRITE_FLUSH(hw); 755 756 return 0; 757 } 758 759 /** 760 * ixgbe_led_off_generic - Turns off the software controllable LEDs. 761 * @hw: pointer to hardware structure 762 * @index: led number to turn off 763 **/ 764 s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index) 765 { 766 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL); 767 768 /* To turn off the LED, set mode to OFF. */ 769 led_reg &= ~IXGBE_LED_MODE_MASK(index); 770 led_reg |= IXGBE_LED_OFF << IXGBE_LED_MODE_SHIFT(index); 771 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg); 772 IXGBE_WRITE_FLUSH(hw); 773 774 return 0; 775 } 776 777 /** 778 * ixgbe_init_eeprom_params_generic - Initialize EEPROM params 779 * @hw: pointer to hardware structure 780 * 781 * Initializes the EEPROM parameters ixgbe_eeprom_info within the 782 * ixgbe_hw struct in order to set up EEPROM access. 783 **/ 784 s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw) 785 { 786 struct ixgbe_eeprom_info *eeprom = &hw->eeprom; 787 u32 eec; 788 u16 eeprom_size; 789 790 if (eeprom->type == ixgbe_eeprom_uninitialized) { 791 eeprom->type = ixgbe_eeprom_none; 792 /* Set default semaphore delay to 10ms which is a well 793 * tested value */ 794 eeprom->semaphore_delay = 10; 795 /* Clear EEPROM page size, it will be initialized as needed */ 796 eeprom->word_page_size = 0; 797 798 /* 799 * Check for EEPROM present first. 800 * If not present leave as none 801 */ 802 eec = IXGBE_READ_REG(hw, IXGBE_EEC); 803 if (eec & IXGBE_EEC_PRES) { 804 eeprom->type = ixgbe_eeprom_spi; 805 806 /* 807 * SPI EEPROM is assumed here. This code would need to 808 * change if a future EEPROM is not SPI. 809 */ 810 eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >> 811 IXGBE_EEC_SIZE_SHIFT); 812 eeprom->word_size = 1 << (eeprom_size + 813 IXGBE_EEPROM_WORD_SIZE_SHIFT); 814 } 815 816 if (eec & IXGBE_EEC_ADDR_SIZE) 817 eeprom->address_bits = 16; 818 else 819 eeprom->address_bits = 8; 820 hw_dbg(hw, "Eeprom params: type = %d, size = %d, address bits: %d\n", 821 eeprom->type, eeprom->word_size, eeprom->address_bits); 822 } 823 824 return 0; 825 } 826 827 /** 828 * ixgbe_write_eeprom_buffer_bit_bang_generic - Write EEPROM using bit-bang 829 * @hw: pointer to hardware structure 830 * @offset: offset within the EEPROM to write 831 * @words: number of words 832 * @data: 16 bit word(s) to write to EEPROM 833 * 834 * Reads 16 bit word(s) from EEPROM through bit-bang method 835 **/ 836 s32 ixgbe_write_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset, 837 u16 words, u16 *data) 838 { 839 s32 status; 840 u16 i, count; 841 842 hw->eeprom.ops.init_params(hw); 843 844 if (words == 0) 845 return IXGBE_ERR_INVALID_ARGUMENT; 846 847 if (offset + words > hw->eeprom.word_size) 848 return IXGBE_ERR_EEPROM; 849 850 /* 851 * The EEPROM page size cannot be queried from the chip. We do lazy 852 * initialization. It is worth to do that when we write large buffer. 853 */ 854 if ((hw->eeprom.word_page_size == 0) && 855 (words > IXGBE_EEPROM_PAGE_SIZE_MAX)) 856 ixgbe_detect_eeprom_page_size_generic(hw, offset); 857 858 /* 859 * We cannot hold synchronization semaphores for too long 860 * to avoid other entity starvation. However it is more efficient 861 * to read in bursts than synchronizing access for each word. 862 */ 863 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) { 864 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ? 865 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i); 866 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset + i, 867 count, &data[i]); 868 869 if (status != 0) 870 break; 871 } 872 873 return status; 874 } 875 876 /** 877 * ixgbe_write_eeprom_buffer_bit_bang - Writes 16 bit word(s) to EEPROM 878 * @hw: pointer to hardware structure 879 * @offset: offset within the EEPROM to be written to 880 * @words: number of word(s) 881 * @data: 16 bit word(s) to be written to the EEPROM 882 * 883 * If ixgbe_eeprom_update_checksum is not called after this function, the 884 * EEPROM will most likely contain an invalid checksum. 885 **/ 886 static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset, 887 u16 words, u16 *data) 888 { 889 s32 status; 890 u16 word; 891 u16 page_size; 892 u16 i; 893 u8 write_opcode = IXGBE_EEPROM_WRITE_OPCODE_SPI; 894 895 /* Prepare the EEPROM for writing */ 896 status = ixgbe_acquire_eeprom(hw); 897 if (status) 898 return status; 899 900 if (ixgbe_ready_eeprom(hw) != 0) { 901 ixgbe_release_eeprom(hw); 902 return IXGBE_ERR_EEPROM; 903 } 904 905 for (i = 0; i < words; i++) { 906 ixgbe_standby_eeprom(hw); 907 908 /* Send the WRITE ENABLE command (8 bit opcode) */ 909 ixgbe_shift_out_eeprom_bits(hw, 910 IXGBE_EEPROM_WREN_OPCODE_SPI, 911 IXGBE_EEPROM_OPCODE_BITS); 912 913 ixgbe_standby_eeprom(hw); 914 915 /* Some SPI eeproms use the 8th address bit embedded 916 * in the opcode 917 */ 918 if ((hw->eeprom.address_bits == 8) && 919 ((offset + i) >= 128)) 920 write_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI; 921 922 /* Send the Write command (8-bit opcode + addr) */ 923 ixgbe_shift_out_eeprom_bits(hw, write_opcode, 924 IXGBE_EEPROM_OPCODE_BITS); 925 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2), 926 hw->eeprom.address_bits); 927 928 page_size = hw->eeprom.word_page_size; 929 930 /* Send the data in burst via SPI */ 931 do { 932 word = data[i]; 933 word = (word >> 8) | (word << 8); 934 ixgbe_shift_out_eeprom_bits(hw, word, 16); 935 936 if (page_size == 0) 937 break; 938 939 /* do not wrap around page */ 940 if (((offset + i) & (page_size - 1)) == 941 (page_size - 1)) 942 break; 943 } while (++i < words); 944 945 ixgbe_standby_eeprom(hw); 946 usleep_range(10000, 20000); 947 } 948 /* Done with writing - release the EEPROM */ 949 ixgbe_release_eeprom(hw); 950 951 return 0; 952 } 953 954 /** 955 * ixgbe_write_eeprom_generic - Writes 16 bit value to EEPROM 956 * @hw: pointer to hardware structure 957 * @offset: offset within the EEPROM to be written to 958 * @data: 16 bit word to be written to the EEPROM 959 * 960 * If ixgbe_eeprom_update_checksum is not called after this function, the 961 * EEPROM will most likely contain an invalid checksum. 962 **/ 963 s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data) 964 { 965 hw->eeprom.ops.init_params(hw); 966 967 if (offset >= hw->eeprom.word_size) 968 return IXGBE_ERR_EEPROM; 969 970 return ixgbe_write_eeprom_buffer_bit_bang(hw, offset, 1, &data); 971 } 972 973 /** 974 * ixgbe_read_eeprom_buffer_bit_bang_generic - Read EEPROM using bit-bang 975 * @hw: pointer to hardware structure 976 * @offset: offset within the EEPROM to be read 977 * @words: number of word(s) 978 * @data: read 16 bit words(s) from EEPROM 979 * 980 * Reads 16 bit word(s) from EEPROM through bit-bang method 981 **/ 982 s32 ixgbe_read_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset, 983 u16 words, u16 *data) 984 { 985 s32 status; 986 u16 i, count; 987 988 hw->eeprom.ops.init_params(hw); 989 990 if (words == 0) 991 return IXGBE_ERR_INVALID_ARGUMENT; 992 993 if (offset + words > hw->eeprom.word_size) 994 return IXGBE_ERR_EEPROM; 995 996 /* 997 * We cannot hold synchronization semaphores for too long 998 * to avoid other entity starvation. However it is more efficient 999 * to read in bursts than synchronizing access for each word. 1000 */ 1001 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) { 1002 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ? 1003 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i); 1004 1005 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset + i, 1006 count, &data[i]); 1007 1008 if (status) 1009 return status; 1010 } 1011 1012 return 0; 1013 } 1014 1015 /** 1016 * ixgbe_read_eeprom_buffer_bit_bang - Read EEPROM using bit-bang 1017 * @hw: pointer to hardware structure 1018 * @offset: offset within the EEPROM to be read 1019 * @words: number of word(s) 1020 * @data: read 16 bit word(s) from EEPROM 1021 * 1022 * Reads 16 bit word(s) from EEPROM through bit-bang method 1023 **/ 1024 static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset, 1025 u16 words, u16 *data) 1026 { 1027 s32 status; 1028 u16 word_in; 1029 u8 read_opcode = IXGBE_EEPROM_READ_OPCODE_SPI; 1030 u16 i; 1031 1032 /* Prepare the EEPROM for reading */ 1033 status = ixgbe_acquire_eeprom(hw); 1034 if (status) 1035 return status; 1036 1037 if (ixgbe_ready_eeprom(hw) != 0) { 1038 ixgbe_release_eeprom(hw); 1039 return IXGBE_ERR_EEPROM; 1040 } 1041 1042 for (i = 0; i < words; i++) { 1043 ixgbe_standby_eeprom(hw); 1044 /* Some SPI eeproms use the 8th address bit embedded 1045 * in the opcode 1046 */ 1047 if ((hw->eeprom.address_bits == 8) && 1048 ((offset + i) >= 128)) 1049 read_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI; 1050 1051 /* Send the READ command (opcode + addr) */ 1052 ixgbe_shift_out_eeprom_bits(hw, read_opcode, 1053 IXGBE_EEPROM_OPCODE_BITS); 1054 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2), 1055 hw->eeprom.address_bits); 1056 1057 /* Read the data. */ 1058 word_in = ixgbe_shift_in_eeprom_bits(hw, 16); 1059 data[i] = (word_in >> 8) | (word_in << 8); 1060 } 1061 1062 /* End this read operation */ 1063 ixgbe_release_eeprom(hw); 1064 1065 return 0; 1066 } 1067 1068 /** 1069 * ixgbe_read_eeprom_bit_bang_generic - Read EEPROM word using bit-bang 1070 * @hw: pointer to hardware structure 1071 * @offset: offset within the EEPROM to be read 1072 * @data: read 16 bit value from EEPROM 1073 * 1074 * Reads 16 bit value from EEPROM through bit-bang method 1075 **/ 1076 s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset, 1077 u16 *data) 1078 { 1079 hw->eeprom.ops.init_params(hw); 1080 1081 if (offset >= hw->eeprom.word_size) 1082 return IXGBE_ERR_EEPROM; 1083 1084 return ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data); 1085 } 1086 1087 /** 1088 * ixgbe_read_eerd_buffer_generic - Read EEPROM word(s) using EERD 1089 * @hw: pointer to hardware structure 1090 * @offset: offset of word in the EEPROM to read 1091 * @words: number of word(s) 1092 * @data: 16 bit word(s) from the EEPROM 1093 * 1094 * Reads a 16 bit word(s) from the EEPROM using the EERD register. 1095 **/ 1096 s32 ixgbe_read_eerd_buffer_generic(struct ixgbe_hw *hw, u16 offset, 1097 u16 words, u16 *data) 1098 { 1099 u32 eerd; 1100 s32 status; 1101 u32 i; 1102 1103 hw->eeprom.ops.init_params(hw); 1104 1105 if (words == 0) 1106 return IXGBE_ERR_INVALID_ARGUMENT; 1107 1108 if (offset >= hw->eeprom.word_size) 1109 return IXGBE_ERR_EEPROM; 1110 1111 for (i = 0; i < words; i++) { 1112 eerd = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) | 1113 IXGBE_EEPROM_RW_REG_START; 1114 1115 IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd); 1116 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_READ); 1117 1118 if (status == 0) { 1119 data[i] = (IXGBE_READ_REG(hw, IXGBE_EERD) >> 1120 IXGBE_EEPROM_RW_REG_DATA); 1121 } else { 1122 hw_dbg(hw, "Eeprom read timed out\n"); 1123 return status; 1124 } 1125 } 1126 1127 return 0; 1128 } 1129 1130 /** 1131 * ixgbe_detect_eeprom_page_size_generic - Detect EEPROM page size 1132 * @hw: pointer to hardware structure 1133 * @offset: offset within the EEPROM to be used as a scratch pad 1134 * 1135 * Discover EEPROM page size by writing marching data at given offset. 1136 * This function is called only when we are writing a new large buffer 1137 * at given offset so the data would be overwritten anyway. 1138 **/ 1139 static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw, 1140 u16 offset) 1141 { 1142 u16 data[IXGBE_EEPROM_PAGE_SIZE_MAX]; 1143 s32 status; 1144 u16 i; 1145 1146 for (i = 0; i < IXGBE_EEPROM_PAGE_SIZE_MAX; i++) 1147 data[i] = i; 1148 1149 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX; 1150 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset, 1151 IXGBE_EEPROM_PAGE_SIZE_MAX, data); 1152 hw->eeprom.word_page_size = 0; 1153 if (status) 1154 return status; 1155 1156 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data); 1157 if (status) 1158 return status; 1159 1160 /* 1161 * When writing in burst more than the actual page size 1162 * EEPROM address wraps around current page. 1163 */ 1164 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX - data[0]; 1165 1166 hw_dbg(hw, "Detected EEPROM page size = %d words.\n", 1167 hw->eeprom.word_page_size); 1168 return 0; 1169 } 1170 1171 /** 1172 * ixgbe_read_eerd_generic - Read EEPROM word using EERD 1173 * @hw: pointer to hardware structure 1174 * @offset: offset of word in the EEPROM to read 1175 * @data: word read from the EEPROM 1176 * 1177 * Reads a 16 bit word from the EEPROM using the EERD register. 1178 **/ 1179 s32 ixgbe_read_eerd_generic(struct ixgbe_hw *hw, u16 offset, u16 *data) 1180 { 1181 return ixgbe_read_eerd_buffer_generic(hw, offset, 1, data); 1182 } 1183 1184 /** 1185 * ixgbe_write_eewr_buffer_generic - Write EEPROM word(s) using EEWR 1186 * @hw: pointer to hardware structure 1187 * @offset: offset of word in the EEPROM to write 1188 * @words: number of words 1189 * @data: word(s) write to the EEPROM 1190 * 1191 * Write a 16 bit word(s) to the EEPROM using the EEWR register. 1192 **/ 1193 s32 ixgbe_write_eewr_buffer_generic(struct ixgbe_hw *hw, u16 offset, 1194 u16 words, u16 *data) 1195 { 1196 u32 eewr; 1197 s32 status; 1198 u16 i; 1199 1200 hw->eeprom.ops.init_params(hw); 1201 1202 if (words == 0) 1203 return IXGBE_ERR_INVALID_ARGUMENT; 1204 1205 if (offset >= hw->eeprom.word_size) 1206 return IXGBE_ERR_EEPROM; 1207 1208 for (i = 0; i < words; i++) { 1209 eewr = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) | 1210 (data[i] << IXGBE_EEPROM_RW_REG_DATA) | 1211 IXGBE_EEPROM_RW_REG_START; 1212 1213 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE); 1214 if (status) { 1215 hw_dbg(hw, "Eeprom write EEWR timed out\n"); 1216 return status; 1217 } 1218 1219 IXGBE_WRITE_REG(hw, IXGBE_EEWR, eewr); 1220 1221 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE); 1222 if (status) { 1223 hw_dbg(hw, "Eeprom write EEWR timed out\n"); 1224 return status; 1225 } 1226 } 1227 1228 return 0; 1229 } 1230 1231 /** 1232 * ixgbe_write_eewr_generic - Write EEPROM word using EEWR 1233 * @hw: pointer to hardware structure 1234 * @offset: offset of word in the EEPROM to write 1235 * @data: word write to the EEPROM 1236 * 1237 * Write a 16 bit word to the EEPROM using the EEWR register. 1238 **/ 1239 s32 ixgbe_write_eewr_generic(struct ixgbe_hw *hw, u16 offset, u16 data) 1240 { 1241 return ixgbe_write_eewr_buffer_generic(hw, offset, 1, &data); 1242 } 1243 1244 /** 1245 * ixgbe_poll_eerd_eewr_done - Poll EERD read or EEWR write status 1246 * @hw: pointer to hardware structure 1247 * @ee_reg: EEPROM flag for polling 1248 * 1249 * Polls the status bit (bit 1) of the EERD or EEWR to determine when the 1250 * read or write is done respectively. 1251 **/ 1252 static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg) 1253 { 1254 u32 i; 1255 u32 reg; 1256 1257 for (i = 0; i < IXGBE_EERD_EEWR_ATTEMPTS; i++) { 1258 if (ee_reg == IXGBE_NVM_POLL_READ) 1259 reg = IXGBE_READ_REG(hw, IXGBE_EERD); 1260 else 1261 reg = IXGBE_READ_REG(hw, IXGBE_EEWR); 1262 1263 if (reg & IXGBE_EEPROM_RW_REG_DONE) { 1264 return 0; 1265 } 1266 udelay(5); 1267 } 1268 return IXGBE_ERR_EEPROM; 1269 } 1270 1271 /** 1272 * ixgbe_acquire_eeprom - Acquire EEPROM using bit-bang 1273 * @hw: pointer to hardware structure 1274 * 1275 * Prepares EEPROM for access using bit-bang method. This function should 1276 * be called before issuing a command to the EEPROM. 1277 **/ 1278 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw) 1279 { 1280 u32 eec; 1281 u32 i; 1282 1283 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) != 0) 1284 return IXGBE_ERR_SWFW_SYNC; 1285 1286 eec = IXGBE_READ_REG(hw, IXGBE_EEC); 1287 1288 /* Request EEPROM Access */ 1289 eec |= IXGBE_EEC_REQ; 1290 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); 1291 1292 for (i = 0; i < IXGBE_EEPROM_GRANT_ATTEMPTS; i++) { 1293 eec = IXGBE_READ_REG(hw, IXGBE_EEC); 1294 if (eec & IXGBE_EEC_GNT) 1295 break; 1296 udelay(5); 1297 } 1298 1299 /* Release if grant not acquired */ 1300 if (!(eec & IXGBE_EEC_GNT)) { 1301 eec &= ~IXGBE_EEC_REQ; 1302 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); 1303 hw_dbg(hw, "Could not acquire EEPROM grant\n"); 1304 1305 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM); 1306 return IXGBE_ERR_EEPROM; 1307 } 1308 1309 /* Setup EEPROM for Read/Write */ 1310 /* Clear CS and SK */ 1311 eec &= ~(IXGBE_EEC_CS | IXGBE_EEC_SK); 1312 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); 1313 IXGBE_WRITE_FLUSH(hw); 1314 udelay(1); 1315 return 0; 1316 } 1317 1318 /** 1319 * ixgbe_get_eeprom_semaphore - Get hardware semaphore 1320 * @hw: pointer to hardware structure 1321 * 1322 * Sets the hardware semaphores so EEPROM access can occur for bit-bang method 1323 **/ 1324 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw) 1325 { 1326 u32 timeout = 2000; 1327 u32 i; 1328 u32 swsm; 1329 1330 /* Get SMBI software semaphore between device drivers first */ 1331 for (i = 0; i < timeout; i++) { 1332 /* 1333 * If the SMBI bit is 0 when we read it, then the bit will be 1334 * set and we have the semaphore 1335 */ 1336 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM); 1337 if (!(swsm & IXGBE_SWSM_SMBI)) 1338 break; 1339 usleep_range(50, 100); 1340 } 1341 1342 if (i == timeout) { 1343 hw_dbg(hw, "Driver can't access the Eeprom - SMBI Semaphore not granted.\n"); 1344 /* this release is particularly important because our attempts 1345 * above to get the semaphore may have succeeded, and if there 1346 * was a timeout, we should unconditionally clear the semaphore 1347 * bits to free the driver to make progress 1348 */ 1349 ixgbe_release_eeprom_semaphore(hw); 1350 1351 usleep_range(50, 100); 1352 /* one last try 1353 * If the SMBI bit is 0 when we read it, then the bit will be 1354 * set and we have the semaphore 1355 */ 1356 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM); 1357 if (swsm & IXGBE_SWSM_SMBI) { 1358 hw_dbg(hw, "Software semaphore SMBI between device drivers not granted.\n"); 1359 return IXGBE_ERR_EEPROM; 1360 } 1361 } 1362 1363 /* Now get the semaphore between SW/FW through the SWESMBI bit */ 1364 for (i = 0; i < timeout; i++) { 1365 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM); 1366 1367 /* Set the SW EEPROM semaphore bit to request access */ 1368 swsm |= IXGBE_SWSM_SWESMBI; 1369 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm); 1370 1371 /* If we set the bit successfully then we got the 1372 * semaphore. 1373 */ 1374 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM); 1375 if (swsm & IXGBE_SWSM_SWESMBI) 1376 break; 1377 1378 usleep_range(50, 100); 1379 } 1380 1381 /* Release semaphores and return error if SW EEPROM semaphore 1382 * was not granted because we don't have access to the EEPROM 1383 */ 1384 if (i >= timeout) { 1385 hw_dbg(hw, "SWESMBI Software EEPROM semaphore not granted.\n"); 1386 ixgbe_release_eeprom_semaphore(hw); 1387 return IXGBE_ERR_EEPROM; 1388 } 1389 1390 return 0; 1391 } 1392 1393 /** 1394 * ixgbe_release_eeprom_semaphore - Release hardware semaphore 1395 * @hw: pointer to hardware structure 1396 * 1397 * This function clears hardware semaphore bits. 1398 **/ 1399 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw) 1400 { 1401 u32 swsm; 1402 1403 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM); 1404 1405 /* Release both semaphores by writing 0 to the bits SWESMBI and SMBI */ 1406 swsm &= ~(IXGBE_SWSM_SWESMBI | IXGBE_SWSM_SMBI); 1407 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm); 1408 IXGBE_WRITE_FLUSH(hw); 1409 } 1410 1411 /** 1412 * ixgbe_ready_eeprom - Polls for EEPROM ready 1413 * @hw: pointer to hardware structure 1414 **/ 1415 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw) 1416 { 1417 u16 i; 1418 u8 spi_stat_reg; 1419 1420 /* 1421 * Read "Status Register" repeatedly until the LSB is cleared. The 1422 * EEPROM will signal that the command has been completed by clearing 1423 * bit 0 of the internal status register. If it's not cleared within 1424 * 5 milliseconds, then error out. 1425 */ 1426 for (i = 0; i < IXGBE_EEPROM_MAX_RETRY_SPI; i += 5) { 1427 ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_RDSR_OPCODE_SPI, 1428 IXGBE_EEPROM_OPCODE_BITS); 1429 spi_stat_reg = (u8)ixgbe_shift_in_eeprom_bits(hw, 8); 1430 if (!(spi_stat_reg & IXGBE_EEPROM_STATUS_RDY_SPI)) 1431 break; 1432 1433 udelay(5); 1434 ixgbe_standby_eeprom(hw); 1435 } 1436 1437 /* 1438 * On some parts, SPI write time could vary from 0-20mSec on 3.3V 1439 * devices (and only 0-5mSec on 5V devices) 1440 */ 1441 if (i >= IXGBE_EEPROM_MAX_RETRY_SPI) { 1442 hw_dbg(hw, "SPI EEPROM Status error\n"); 1443 return IXGBE_ERR_EEPROM; 1444 } 1445 1446 return 0; 1447 } 1448 1449 /** 1450 * ixgbe_standby_eeprom - Returns EEPROM to a "standby" state 1451 * @hw: pointer to hardware structure 1452 **/ 1453 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw) 1454 { 1455 u32 eec; 1456 1457 eec = IXGBE_READ_REG(hw, IXGBE_EEC); 1458 1459 /* Toggle CS to flush commands */ 1460 eec |= IXGBE_EEC_CS; 1461 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); 1462 IXGBE_WRITE_FLUSH(hw); 1463 udelay(1); 1464 eec &= ~IXGBE_EEC_CS; 1465 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); 1466 IXGBE_WRITE_FLUSH(hw); 1467 udelay(1); 1468 } 1469 1470 /** 1471 * ixgbe_shift_out_eeprom_bits - Shift data bits out to the EEPROM. 1472 * @hw: pointer to hardware structure 1473 * @data: data to send to the EEPROM 1474 * @count: number of bits to shift out 1475 **/ 1476 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data, 1477 u16 count) 1478 { 1479 u32 eec; 1480 u32 mask; 1481 u32 i; 1482 1483 eec = IXGBE_READ_REG(hw, IXGBE_EEC); 1484 1485 /* 1486 * Mask is used to shift "count" bits of "data" out to the EEPROM 1487 * one bit at a time. Determine the starting bit based on count 1488 */ 1489 mask = 0x01 << (count - 1); 1490 1491 for (i = 0; i < count; i++) { 1492 /* 1493 * A "1" is shifted out to the EEPROM by setting bit "DI" to a 1494 * "1", and then raising and then lowering the clock (the SK 1495 * bit controls the clock input to the EEPROM). A "0" is 1496 * shifted out to the EEPROM by setting "DI" to "0" and then 1497 * raising and then lowering the clock. 1498 */ 1499 if (data & mask) 1500 eec |= IXGBE_EEC_DI; 1501 else 1502 eec &= ~IXGBE_EEC_DI; 1503 1504 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); 1505 IXGBE_WRITE_FLUSH(hw); 1506 1507 udelay(1); 1508 1509 ixgbe_raise_eeprom_clk(hw, &eec); 1510 ixgbe_lower_eeprom_clk(hw, &eec); 1511 1512 /* 1513 * Shift mask to signify next bit of data to shift in to the 1514 * EEPROM 1515 */ 1516 mask = mask >> 1; 1517 } 1518 1519 /* We leave the "DI" bit set to "0" when we leave this routine. */ 1520 eec &= ~IXGBE_EEC_DI; 1521 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); 1522 IXGBE_WRITE_FLUSH(hw); 1523 } 1524 1525 /** 1526 * ixgbe_shift_in_eeprom_bits - Shift data bits in from the EEPROM 1527 * @hw: pointer to hardware structure 1528 **/ 1529 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count) 1530 { 1531 u32 eec; 1532 u32 i; 1533 u16 data = 0; 1534 1535 /* 1536 * In order to read a register from the EEPROM, we need to shift 1537 * 'count' bits in from the EEPROM. Bits are "shifted in" by raising 1538 * the clock input to the EEPROM (setting the SK bit), and then reading 1539 * the value of the "DO" bit. During this "shifting in" process the 1540 * "DI" bit should always be clear. 1541 */ 1542 eec = IXGBE_READ_REG(hw, IXGBE_EEC); 1543 1544 eec &= ~(IXGBE_EEC_DO | IXGBE_EEC_DI); 1545 1546 for (i = 0; i < count; i++) { 1547 data = data << 1; 1548 ixgbe_raise_eeprom_clk(hw, &eec); 1549 1550 eec = IXGBE_READ_REG(hw, IXGBE_EEC); 1551 1552 eec &= ~(IXGBE_EEC_DI); 1553 if (eec & IXGBE_EEC_DO) 1554 data |= 1; 1555 1556 ixgbe_lower_eeprom_clk(hw, &eec); 1557 } 1558 1559 return data; 1560 } 1561 1562 /** 1563 * ixgbe_raise_eeprom_clk - Raises the EEPROM's clock input. 1564 * @hw: pointer to hardware structure 1565 * @eec: EEC register's current value 1566 **/ 1567 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec) 1568 { 1569 /* 1570 * Raise the clock input to the EEPROM 1571 * (setting the SK bit), then delay 1572 */ 1573 *eec = *eec | IXGBE_EEC_SK; 1574 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec); 1575 IXGBE_WRITE_FLUSH(hw); 1576 udelay(1); 1577 } 1578 1579 /** 1580 * ixgbe_lower_eeprom_clk - Lowers the EEPROM's clock input. 1581 * @hw: pointer to hardware structure 1582 * @eecd: EECD's current value 1583 **/ 1584 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec) 1585 { 1586 /* 1587 * Lower the clock input to the EEPROM (clearing the SK bit), then 1588 * delay 1589 */ 1590 *eec = *eec & ~IXGBE_EEC_SK; 1591 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec); 1592 IXGBE_WRITE_FLUSH(hw); 1593 udelay(1); 1594 } 1595 1596 /** 1597 * ixgbe_release_eeprom - Release EEPROM, release semaphores 1598 * @hw: pointer to hardware structure 1599 **/ 1600 static void ixgbe_release_eeprom(struct ixgbe_hw *hw) 1601 { 1602 u32 eec; 1603 1604 eec = IXGBE_READ_REG(hw, IXGBE_EEC); 1605 1606 eec |= IXGBE_EEC_CS; /* Pull CS high */ 1607 eec &= ~IXGBE_EEC_SK; /* Lower SCK */ 1608 1609 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); 1610 IXGBE_WRITE_FLUSH(hw); 1611 1612 udelay(1); 1613 1614 /* Stop requesting EEPROM access */ 1615 eec &= ~IXGBE_EEC_REQ; 1616 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); 1617 1618 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM); 1619 1620 /* 1621 * Delay before attempt to obtain semaphore again to allow FW 1622 * access. semaphore_delay is in ms we need us for usleep_range 1623 */ 1624 usleep_range(hw->eeprom.semaphore_delay * 1000, 1625 hw->eeprom.semaphore_delay * 2000); 1626 } 1627 1628 /** 1629 * ixgbe_calc_eeprom_checksum_generic - Calculates and returns the checksum 1630 * @hw: pointer to hardware structure 1631 **/ 1632 s32 ixgbe_calc_eeprom_checksum_generic(struct ixgbe_hw *hw) 1633 { 1634 u16 i; 1635 u16 j; 1636 u16 checksum = 0; 1637 u16 length = 0; 1638 u16 pointer = 0; 1639 u16 word = 0; 1640 1641 /* Include 0x0-0x3F in the checksum */ 1642 for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) { 1643 if (hw->eeprom.ops.read(hw, i, &word)) { 1644 hw_dbg(hw, "EEPROM read failed\n"); 1645 break; 1646 } 1647 checksum += word; 1648 } 1649 1650 /* Include all data from pointers except for the fw pointer */ 1651 for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) { 1652 if (hw->eeprom.ops.read(hw, i, &pointer)) { 1653 hw_dbg(hw, "EEPROM read failed\n"); 1654 return IXGBE_ERR_EEPROM; 1655 } 1656 1657 /* If the pointer seems invalid */ 1658 if (pointer == 0xFFFF || pointer == 0) 1659 continue; 1660 1661 if (hw->eeprom.ops.read(hw, pointer, &length)) { 1662 hw_dbg(hw, "EEPROM read failed\n"); 1663 return IXGBE_ERR_EEPROM; 1664 } 1665 1666 if (length == 0xFFFF || length == 0) 1667 continue; 1668 1669 for (j = pointer + 1; j <= pointer + length; j++) { 1670 if (hw->eeprom.ops.read(hw, j, &word)) { 1671 hw_dbg(hw, "EEPROM read failed\n"); 1672 return IXGBE_ERR_EEPROM; 1673 } 1674 checksum += word; 1675 } 1676 } 1677 1678 checksum = (u16)IXGBE_EEPROM_SUM - checksum; 1679 1680 return (s32)checksum; 1681 } 1682 1683 /** 1684 * ixgbe_validate_eeprom_checksum_generic - Validate EEPROM checksum 1685 * @hw: pointer to hardware structure 1686 * @checksum_val: calculated checksum 1687 * 1688 * Performs checksum calculation and validates the EEPROM checksum. If the 1689 * caller does not need checksum_val, the value can be NULL. 1690 **/ 1691 s32 ixgbe_validate_eeprom_checksum_generic(struct ixgbe_hw *hw, 1692 u16 *checksum_val) 1693 { 1694 s32 status; 1695 u16 checksum; 1696 u16 read_checksum = 0; 1697 1698 /* 1699 * Read the first word from the EEPROM. If this times out or fails, do 1700 * not continue or we could be in for a very long wait while every 1701 * EEPROM read fails 1702 */ 1703 status = hw->eeprom.ops.read(hw, 0, &checksum); 1704 if (status) { 1705 hw_dbg(hw, "EEPROM read failed\n"); 1706 return status; 1707 } 1708 1709 status = hw->eeprom.ops.calc_checksum(hw); 1710 if (status < 0) 1711 return status; 1712 1713 checksum = (u16)(status & 0xffff); 1714 1715 status = hw->eeprom.ops.read(hw, IXGBE_EEPROM_CHECKSUM, &read_checksum); 1716 if (status) { 1717 hw_dbg(hw, "EEPROM read failed\n"); 1718 return status; 1719 } 1720 1721 /* Verify read checksum from EEPROM is the same as 1722 * calculated checksum 1723 */ 1724 if (read_checksum != checksum) 1725 status = IXGBE_ERR_EEPROM_CHECKSUM; 1726 1727 /* If the user cares, return the calculated checksum */ 1728 if (checksum_val) 1729 *checksum_val = checksum; 1730 1731 return status; 1732 } 1733 1734 /** 1735 * ixgbe_update_eeprom_checksum_generic - Updates the EEPROM checksum 1736 * @hw: pointer to hardware structure 1737 **/ 1738 s32 ixgbe_update_eeprom_checksum_generic(struct ixgbe_hw *hw) 1739 { 1740 s32 status; 1741 u16 checksum; 1742 1743 /* 1744 * Read the first word from the EEPROM. If this times out or fails, do 1745 * not continue or we could be in for a very long wait while every 1746 * EEPROM read fails 1747 */ 1748 status = hw->eeprom.ops.read(hw, 0, &checksum); 1749 if (status) { 1750 hw_dbg(hw, "EEPROM read failed\n"); 1751 return status; 1752 } 1753 1754 status = hw->eeprom.ops.calc_checksum(hw); 1755 if (status < 0) 1756 return status; 1757 1758 checksum = (u16)(status & 0xffff); 1759 1760 status = hw->eeprom.ops.write(hw, IXGBE_EEPROM_CHECKSUM, checksum); 1761 1762 return status; 1763 } 1764 1765 /** 1766 * ixgbe_set_rar_generic - Set Rx address register 1767 * @hw: pointer to hardware structure 1768 * @index: Receive address register to write 1769 * @addr: Address to put into receive address register 1770 * @vmdq: VMDq "set" or "pool" index 1771 * @enable_addr: set flag that address is active 1772 * 1773 * Puts an ethernet address into a receive address register. 1774 **/ 1775 s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq, 1776 u32 enable_addr) 1777 { 1778 u32 rar_low, rar_high; 1779 u32 rar_entries = hw->mac.num_rar_entries; 1780 1781 /* Make sure we are using a valid rar index range */ 1782 if (index >= rar_entries) { 1783 hw_dbg(hw, "RAR index %d is out of range.\n", index); 1784 return IXGBE_ERR_INVALID_ARGUMENT; 1785 } 1786 1787 /* setup VMDq pool selection before this RAR gets enabled */ 1788 hw->mac.ops.set_vmdq(hw, index, vmdq); 1789 1790 /* 1791 * HW expects these in little endian so we reverse the byte 1792 * order from network order (big endian) to little endian 1793 */ 1794 rar_low = ((u32)addr[0] | 1795 ((u32)addr[1] << 8) | 1796 ((u32)addr[2] << 16) | 1797 ((u32)addr[3] << 24)); 1798 /* 1799 * Some parts put the VMDq setting in the extra RAH bits, 1800 * so save everything except the lower 16 bits that hold part 1801 * of the address and the address valid bit. 1802 */ 1803 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index)); 1804 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV); 1805 rar_high |= ((u32)addr[4] | ((u32)addr[5] << 8)); 1806 1807 if (enable_addr != 0) 1808 rar_high |= IXGBE_RAH_AV; 1809 1810 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low); 1811 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high); 1812 1813 return 0; 1814 } 1815 1816 /** 1817 * ixgbe_clear_rar_generic - Remove Rx address register 1818 * @hw: pointer to hardware structure 1819 * @index: Receive address register to write 1820 * 1821 * Clears an ethernet address from a receive address register. 1822 **/ 1823 s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index) 1824 { 1825 u32 rar_high; 1826 u32 rar_entries = hw->mac.num_rar_entries; 1827 1828 /* Make sure we are using a valid rar index range */ 1829 if (index >= rar_entries) { 1830 hw_dbg(hw, "RAR index %d is out of range.\n", index); 1831 return IXGBE_ERR_INVALID_ARGUMENT; 1832 } 1833 1834 /* 1835 * Some parts put the VMDq setting in the extra RAH bits, 1836 * so save everything except the lower 16 bits that hold part 1837 * of the address and the address valid bit. 1838 */ 1839 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index)); 1840 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV); 1841 1842 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), 0); 1843 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high); 1844 1845 /* clear VMDq pool/queue selection for this RAR */ 1846 hw->mac.ops.clear_vmdq(hw, index, IXGBE_CLEAR_VMDQ_ALL); 1847 1848 return 0; 1849 } 1850 1851 /** 1852 * ixgbe_init_rx_addrs_generic - Initializes receive address filters. 1853 * @hw: pointer to hardware structure 1854 * 1855 * Places the MAC address in receive address register 0 and clears the rest 1856 * of the receive address registers. Clears the multicast table. Assumes 1857 * the receiver is in reset when the routine is called. 1858 **/ 1859 s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw) 1860 { 1861 u32 i; 1862 u32 rar_entries = hw->mac.num_rar_entries; 1863 1864 /* 1865 * If the current mac address is valid, assume it is a software override 1866 * to the permanent address. 1867 * Otherwise, use the permanent address from the eeprom. 1868 */ 1869 if (!is_valid_ether_addr(hw->mac.addr)) { 1870 /* Get the MAC address from the RAR0 for later reference */ 1871 hw->mac.ops.get_mac_addr(hw, hw->mac.addr); 1872 1873 hw_dbg(hw, " Keeping Current RAR0 Addr =%pM\n", hw->mac.addr); 1874 } else { 1875 /* Setup the receive address. */ 1876 hw_dbg(hw, "Overriding MAC Address in RAR[0]\n"); 1877 hw_dbg(hw, " New MAC Addr =%pM\n", hw->mac.addr); 1878 1879 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV); 1880 1881 /* clear VMDq pool/queue selection for RAR 0 */ 1882 hw->mac.ops.clear_vmdq(hw, 0, IXGBE_CLEAR_VMDQ_ALL); 1883 } 1884 hw->addr_ctrl.overflow_promisc = 0; 1885 1886 hw->addr_ctrl.rar_used_count = 1; 1887 1888 /* Zero out the other receive addresses. */ 1889 hw_dbg(hw, "Clearing RAR[1-%d]\n", rar_entries - 1); 1890 for (i = 1; i < rar_entries; i++) { 1891 IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0); 1892 IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0); 1893 } 1894 1895 /* Clear the MTA */ 1896 hw->addr_ctrl.mta_in_use = 0; 1897 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type); 1898 1899 hw_dbg(hw, " Clearing MTA\n"); 1900 for (i = 0; i < hw->mac.mcft_size; i++) 1901 IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0); 1902 1903 if (hw->mac.ops.init_uta_tables) 1904 hw->mac.ops.init_uta_tables(hw); 1905 1906 return 0; 1907 } 1908 1909 /** 1910 * ixgbe_mta_vector - Determines bit-vector in multicast table to set 1911 * @hw: pointer to hardware structure 1912 * @mc_addr: the multicast address 1913 * 1914 * Extracts the 12 bits, from a multicast address, to determine which 1915 * bit-vector to set in the multicast table. The hardware uses 12 bits, from 1916 * incoming rx multicast addresses, to determine the bit-vector to check in 1917 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set 1918 * by the MO field of the MCSTCTRL. The MO field is set during initialization 1919 * to mc_filter_type. 1920 **/ 1921 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr) 1922 { 1923 u32 vector = 0; 1924 1925 switch (hw->mac.mc_filter_type) { 1926 case 0: /* use bits [47:36] of the address */ 1927 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4)); 1928 break; 1929 case 1: /* use bits [46:35] of the address */ 1930 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5)); 1931 break; 1932 case 2: /* use bits [45:34] of the address */ 1933 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6)); 1934 break; 1935 case 3: /* use bits [43:32] of the address */ 1936 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8)); 1937 break; 1938 default: /* Invalid mc_filter_type */ 1939 hw_dbg(hw, "MC filter type param set incorrectly\n"); 1940 break; 1941 } 1942 1943 /* vector can only be 12-bits or boundary will be exceeded */ 1944 vector &= 0xFFF; 1945 return vector; 1946 } 1947 1948 /** 1949 * ixgbe_set_mta - Set bit-vector in multicast table 1950 * @hw: pointer to hardware structure 1951 * @hash_value: Multicast address hash value 1952 * 1953 * Sets the bit-vector in the multicast table. 1954 **/ 1955 static void ixgbe_set_mta(struct ixgbe_hw *hw, u8 *mc_addr) 1956 { 1957 u32 vector; 1958 u32 vector_bit; 1959 u32 vector_reg; 1960 1961 hw->addr_ctrl.mta_in_use++; 1962 1963 vector = ixgbe_mta_vector(hw, mc_addr); 1964 hw_dbg(hw, " bit-vector = 0x%03X\n", vector); 1965 1966 /* 1967 * The MTA is a register array of 128 32-bit registers. It is treated 1968 * like an array of 4096 bits. We want to set bit 1969 * BitArray[vector_value]. So we figure out what register the bit is 1970 * in, read it, OR in the new bit, then write back the new value. The 1971 * register is determined by the upper 7 bits of the vector value and 1972 * the bit within that register are determined by the lower 5 bits of 1973 * the value. 1974 */ 1975 vector_reg = (vector >> 5) & 0x7F; 1976 vector_bit = vector & 0x1F; 1977 hw->mac.mta_shadow[vector_reg] |= (1 << vector_bit); 1978 } 1979 1980 /** 1981 * ixgbe_update_mc_addr_list_generic - Updates MAC list of multicast addresses 1982 * @hw: pointer to hardware structure 1983 * @netdev: pointer to net device structure 1984 * 1985 * The given list replaces any existing list. Clears the MC addrs from receive 1986 * address registers and the multicast table. Uses unused receive address 1987 * registers for the first multicast addresses, and hashes the rest into the 1988 * multicast table. 1989 **/ 1990 s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw, 1991 struct net_device *netdev) 1992 { 1993 struct netdev_hw_addr *ha; 1994 u32 i; 1995 1996 /* 1997 * Set the new number of MC addresses that we are being requested to 1998 * use. 1999 */ 2000 hw->addr_ctrl.num_mc_addrs = netdev_mc_count(netdev); 2001 hw->addr_ctrl.mta_in_use = 0; 2002 2003 /* Clear mta_shadow */ 2004 hw_dbg(hw, " Clearing MTA\n"); 2005 memset(&hw->mac.mta_shadow, 0, sizeof(hw->mac.mta_shadow)); 2006 2007 /* Update mta shadow */ 2008 netdev_for_each_mc_addr(ha, netdev) { 2009 hw_dbg(hw, " Adding the multicast addresses:\n"); 2010 ixgbe_set_mta(hw, ha->addr); 2011 } 2012 2013 /* Enable mta */ 2014 for (i = 0; i < hw->mac.mcft_size; i++) 2015 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_MTA(0), i, 2016 hw->mac.mta_shadow[i]); 2017 2018 if (hw->addr_ctrl.mta_in_use > 0) 2019 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, 2020 IXGBE_MCSTCTRL_MFE | hw->mac.mc_filter_type); 2021 2022 hw_dbg(hw, "ixgbe_update_mc_addr_list_generic Complete\n"); 2023 return 0; 2024 } 2025 2026 /** 2027 * ixgbe_enable_mc_generic - Enable multicast address in RAR 2028 * @hw: pointer to hardware structure 2029 * 2030 * Enables multicast address in RAR and the use of the multicast hash table. 2031 **/ 2032 s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw) 2033 { 2034 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl; 2035 2036 if (a->mta_in_use > 0) 2037 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, IXGBE_MCSTCTRL_MFE | 2038 hw->mac.mc_filter_type); 2039 2040 return 0; 2041 } 2042 2043 /** 2044 * ixgbe_disable_mc_generic - Disable multicast address in RAR 2045 * @hw: pointer to hardware structure 2046 * 2047 * Disables multicast address in RAR and the use of the multicast hash table. 2048 **/ 2049 s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw) 2050 { 2051 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl; 2052 2053 if (a->mta_in_use > 0) 2054 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type); 2055 2056 return 0; 2057 } 2058 2059 /** 2060 * ixgbe_fc_enable_generic - Enable flow control 2061 * @hw: pointer to hardware structure 2062 * 2063 * Enable flow control according to the current settings. 2064 **/ 2065 s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw) 2066 { 2067 u32 mflcn_reg, fccfg_reg; 2068 u32 reg; 2069 u32 fcrtl, fcrth; 2070 int i; 2071 2072 /* Validate the water mark configuration. */ 2073 if (!hw->fc.pause_time) 2074 return IXGBE_ERR_INVALID_LINK_SETTINGS; 2075 2076 /* Low water mark of zero causes XOFF floods */ 2077 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) { 2078 if ((hw->fc.current_mode & ixgbe_fc_tx_pause) && 2079 hw->fc.high_water[i]) { 2080 if (!hw->fc.low_water[i] || 2081 hw->fc.low_water[i] >= hw->fc.high_water[i]) { 2082 hw_dbg(hw, "Invalid water mark configuration\n"); 2083 return IXGBE_ERR_INVALID_LINK_SETTINGS; 2084 } 2085 } 2086 } 2087 2088 /* Negotiate the fc mode to use */ 2089 ixgbe_fc_autoneg(hw); 2090 2091 /* Disable any previous flow control settings */ 2092 mflcn_reg = IXGBE_READ_REG(hw, IXGBE_MFLCN); 2093 mflcn_reg &= ~(IXGBE_MFLCN_RPFCE_MASK | IXGBE_MFLCN_RFCE); 2094 2095 fccfg_reg = IXGBE_READ_REG(hw, IXGBE_FCCFG); 2096 fccfg_reg &= ~(IXGBE_FCCFG_TFCE_802_3X | IXGBE_FCCFG_TFCE_PRIORITY); 2097 2098 /* 2099 * The possible values of fc.current_mode are: 2100 * 0: Flow control is completely disabled 2101 * 1: Rx flow control is enabled (we can receive pause frames, 2102 * but not send pause frames). 2103 * 2: Tx flow control is enabled (we can send pause frames but 2104 * we do not support receiving pause frames). 2105 * 3: Both Rx and Tx flow control (symmetric) are enabled. 2106 * other: Invalid. 2107 */ 2108 switch (hw->fc.current_mode) { 2109 case ixgbe_fc_none: 2110 /* 2111 * Flow control is disabled by software override or autoneg. 2112 * The code below will actually disable it in the HW. 2113 */ 2114 break; 2115 case ixgbe_fc_rx_pause: 2116 /* 2117 * Rx Flow control is enabled and Tx Flow control is 2118 * disabled by software override. Since there really 2119 * isn't a way to advertise that we are capable of RX 2120 * Pause ONLY, we will advertise that we support both 2121 * symmetric and asymmetric Rx PAUSE. Later, we will 2122 * disable the adapter's ability to send PAUSE frames. 2123 */ 2124 mflcn_reg |= IXGBE_MFLCN_RFCE; 2125 break; 2126 case ixgbe_fc_tx_pause: 2127 /* 2128 * Tx Flow control is enabled, and Rx Flow control is 2129 * disabled by software override. 2130 */ 2131 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X; 2132 break; 2133 case ixgbe_fc_full: 2134 /* Flow control (both Rx and Tx) is enabled by SW override. */ 2135 mflcn_reg |= IXGBE_MFLCN_RFCE; 2136 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X; 2137 break; 2138 default: 2139 hw_dbg(hw, "Flow control param set incorrectly\n"); 2140 return IXGBE_ERR_CONFIG; 2141 } 2142 2143 /* Set 802.3x based flow control settings. */ 2144 mflcn_reg |= IXGBE_MFLCN_DPF; 2145 IXGBE_WRITE_REG(hw, IXGBE_MFLCN, mflcn_reg); 2146 IXGBE_WRITE_REG(hw, IXGBE_FCCFG, fccfg_reg); 2147 2148 /* Set up and enable Rx high/low water mark thresholds, enable XON. */ 2149 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) { 2150 if ((hw->fc.current_mode & ixgbe_fc_tx_pause) && 2151 hw->fc.high_water[i]) { 2152 fcrtl = (hw->fc.low_water[i] << 10) | IXGBE_FCRTL_XONE; 2153 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), fcrtl); 2154 fcrth = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN; 2155 } else { 2156 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), 0); 2157 /* 2158 * In order to prevent Tx hangs when the internal Tx 2159 * switch is enabled we must set the high water mark 2160 * to the maximum FCRTH value. This allows the Tx 2161 * switch to function even under heavy Rx workloads. 2162 */ 2163 fcrth = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i)) - 32; 2164 } 2165 2166 IXGBE_WRITE_REG(hw, IXGBE_FCRTH_82599(i), fcrth); 2167 } 2168 2169 /* Configure pause time (2 TCs per register) */ 2170 reg = hw->fc.pause_time * 0x00010001; 2171 for (i = 0; i < (MAX_TRAFFIC_CLASS / 2); i++) 2172 IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg); 2173 2174 IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2); 2175 2176 return 0; 2177 } 2178 2179 /** 2180 * ixgbe_negotiate_fc - Negotiate flow control 2181 * @hw: pointer to hardware structure 2182 * @adv_reg: flow control advertised settings 2183 * @lp_reg: link partner's flow control settings 2184 * @adv_sym: symmetric pause bit in advertisement 2185 * @adv_asm: asymmetric pause bit in advertisement 2186 * @lp_sym: symmetric pause bit in link partner advertisement 2187 * @lp_asm: asymmetric pause bit in link partner advertisement 2188 * 2189 * Find the intersection between advertised settings and link partner's 2190 * advertised settings 2191 **/ 2192 static s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg, 2193 u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm) 2194 { 2195 if ((!(adv_reg)) || (!(lp_reg))) 2196 return IXGBE_ERR_FC_NOT_NEGOTIATED; 2197 2198 if ((adv_reg & adv_sym) && (lp_reg & lp_sym)) { 2199 /* 2200 * Now we need to check if the user selected Rx ONLY 2201 * of pause frames. In this case, we had to advertise 2202 * FULL flow control because we could not advertise RX 2203 * ONLY. Hence, we must now check to see if we need to 2204 * turn OFF the TRANSMISSION of PAUSE frames. 2205 */ 2206 if (hw->fc.requested_mode == ixgbe_fc_full) { 2207 hw->fc.current_mode = ixgbe_fc_full; 2208 hw_dbg(hw, "Flow Control = FULL.\n"); 2209 } else { 2210 hw->fc.current_mode = ixgbe_fc_rx_pause; 2211 hw_dbg(hw, "Flow Control=RX PAUSE frames only\n"); 2212 } 2213 } else if (!(adv_reg & adv_sym) && (adv_reg & adv_asm) && 2214 (lp_reg & lp_sym) && (lp_reg & lp_asm)) { 2215 hw->fc.current_mode = ixgbe_fc_tx_pause; 2216 hw_dbg(hw, "Flow Control = TX PAUSE frames only.\n"); 2217 } else if ((adv_reg & adv_sym) && (adv_reg & adv_asm) && 2218 !(lp_reg & lp_sym) && (lp_reg & lp_asm)) { 2219 hw->fc.current_mode = ixgbe_fc_rx_pause; 2220 hw_dbg(hw, "Flow Control = RX PAUSE frames only.\n"); 2221 } else { 2222 hw->fc.current_mode = ixgbe_fc_none; 2223 hw_dbg(hw, "Flow Control = NONE.\n"); 2224 } 2225 return 0; 2226 } 2227 2228 /** 2229 * ixgbe_fc_autoneg_fiber - Enable flow control on 1 gig fiber 2230 * @hw: pointer to hardware structure 2231 * 2232 * Enable flow control according on 1 gig fiber. 2233 **/ 2234 static s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw) 2235 { 2236 u32 pcs_anadv_reg, pcs_lpab_reg, linkstat; 2237 s32 ret_val; 2238 2239 /* 2240 * On multispeed fiber at 1g, bail out if 2241 * - link is up but AN did not complete, or if 2242 * - link is up and AN completed but timed out 2243 */ 2244 2245 linkstat = IXGBE_READ_REG(hw, IXGBE_PCS1GLSTA); 2246 if ((!!(linkstat & IXGBE_PCS1GLSTA_AN_COMPLETE) == 0) || 2247 (!!(linkstat & IXGBE_PCS1GLSTA_AN_TIMED_OUT) == 1)) 2248 return IXGBE_ERR_FC_NOT_NEGOTIATED; 2249 2250 pcs_anadv_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA); 2251 pcs_lpab_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANLP); 2252 2253 ret_val = ixgbe_negotiate_fc(hw, pcs_anadv_reg, 2254 pcs_lpab_reg, IXGBE_PCS1GANA_SYM_PAUSE, 2255 IXGBE_PCS1GANA_ASM_PAUSE, 2256 IXGBE_PCS1GANA_SYM_PAUSE, 2257 IXGBE_PCS1GANA_ASM_PAUSE); 2258 2259 return ret_val; 2260 } 2261 2262 /** 2263 * ixgbe_fc_autoneg_backplane - Enable flow control IEEE clause 37 2264 * @hw: pointer to hardware structure 2265 * 2266 * Enable flow control according to IEEE clause 37. 2267 **/ 2268 static s32 ixgbe_fc_autoneg_backplane(struct ixgbe_hw *hw) 2269 { 2270 u32 links2, anlp1_reg, autoc_reg, links; 2271 s32 ret_val; 2272 2273 /* 2274 * On backplane, bail out if 2275 * - backplane autoneg was not completed, or if 2276 * - we are 82599 and link partner is not AN enabled 2277 */ 2278 links = IXGBE_READ_REG(hw, IXGBE_LINKS); 2279 if ((links & IXGBE_LINKS_KX_AN_COMP) == 0) 2280 return IXGBE_ERR_FC_NOT_NEGOTIATED; 2281 2282 if (hw->mac.type == ixgbe_mac_82599EB) { 2283 links2 = IXGBE_READ_REG(hw, IXGBE_LINKS2); 2284 if ((links2 & IXGBE_LINKS2_AN_SUPPORTED) == 0) 2285 return IXGBE_ERR_FC_NOT_NEGOTIATED; 2286 } 2287 /* 2288 * Read the 10g AN autoc and LP ability registers and resolve 2289 * local flow control settings accordingly 2290 */ 2291 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC); 2292 anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1); 2293 2294 ret_val = ixgbe_negotiate_fc(hw, autoc_reg, 2295 anlp1_reg, IXGBE_AUTOC_SYM_PAUSE, IXGBE_AUTOC_ASM_PAUSE, 2296 IXGBE_ANLP1_SYM_PAUSE, IXGBE_ANLP1_ASM_PAUSE); 2297 2298 return ret_val; 2299 } 2300 2301 /** 2302 * ixgbe_fc_autoneg_copper - Enable flow control IEEE clause 37 2303 * @hw: pointer to hardware structure 2304 * 2305 * Enable flow control according to IEEE clause 37. 2306 **/ 2307 static s32 ixgbe_fc_autoneg_copper(struct ixgbe_hw *hw) 2308 { 2309 u16 technology_ability_reg = 0; 2310 u16 lp_technology_ability_reg = 0; 2311 2312 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE, 2313 MDIO_MMD_AN, 2314 &technology_ability_reg); 2315 hw->phy.ops.read_reg(hw, MDIO_AN_LPA, 2316 MDIO_MMD_AN, 2317 &lp_technology_ability_reg); 2318 2319 return ixgbe_negotiate_fc(hw, (u32)technology_ability_reg, 2320 (u32)lp_technology_ability_reg, 2321 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE, 2322 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE); 2323 } 2324 2325 /** 2326 * ixgbe_fc_autoneg - Configure flow control 2327 * @hw: pointer to hardware structure 2328 * 2329 * Compares our advertised flow control capabilities to those advertised by 2330 * our link partner, and determines the proper flow control mode to use. 2331 **/ 2332 void ixgbe_fc_autoneg(struct ixgbe_hw *hw) 2333 { 2334 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED; 2335 ixgbe_link_speed speed; 2336 bool link_up; 2337 2338 /* 2339 * AN should have completed when the cable was plugged in. 2340 * Look for reasons to bail out. Bail out if: 2341 * - FC autoneg is disabled, or if 2342 * - link is not up. 2343 * 2344 * Since we're being called from an LSC, link is already known to be up. 2345 * So use link_up_wait_to_complete=false. 2346 */ 2347 if (hw->fc.disable_fc_autoneg) 2348 goto out; 2349 2350 hw->mac.ops.check_link(hw, &speed, &link_up, false); 2351 if (!link_up) 2352 goto out; 2353 2354 switch (hw->phy.media_type) { 2355 /* Autoneg flow control on fiber adapters */ 2356 case ixgbe_media_type_fiber: 2357 if (speed == IXGBE_LINK_SPEED_1GB_FULL) 2358 ret_val = ixgbe_fc_autoneg_fiber(hw); 2359 break; 2360 2361 /* Autoneg flow control on backplane adapters */ 2362 case ixgbe_media_type_backplane: 2363 ret_val = ixgbe_fc_autoneg_backplane(hw); 2364 break; 2365 2366 /* Autoneg flow control on copper adapters */ 2367 case ixgbe_media_type_copper: 2368 if (ixgbe_device_supports_autoneg_fc(hw)) 2369 ret_val = ixgbe_fc_autoneg_copper(hw); 2370 break; 2371 2372 default: 2373 break; 2374 } 2375 2376 out: 2377 if (ret_val == 0) { 2378 hw->fc.fc_was_autonegged = true; 2379 } else { 2380 hw->fc.fc_was_autonegged = false; 2381 hw->fc.current_mode = hw->fc.requested_mode; 2382 } 2383 } 2384 2385 /** 2386 * ixgbe_pcie_timeout_poll - Return number of times to poll for completion 2387 * @hw: pointer to hardware structure 2388 * 2389 * System-wide timeout range is encoded in PCIe Device Control2 register. 2390 * 2391 * Add 10% to specified maximum and return the number of times to poll for 2392 * completion timeout, in units of 100 microsec. Never return less than 2393 * 800 = 80 millisec. 2394 **/ 2395 static u32 ixgbe_pcie_timeout_poll(struct ixgbe_hw *hw) 2396 { 2397 s16 devctl2; 2398 u32 pollcnt; 2399 2400 devctl2 = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_CONTROL2); 2401 devctl2 &= IXGBE_PCIDEVCTRL2_TIMEO_MASK; 2402 2403 switch (devctl2) { 2404 case IXGBE_PCIDEVCTRL2_65_130ms: 2405 pollcnt = 1300; /* 130 millisec */ 2406 break; 2407 case IXGBE_PCIDEVCTRL2_260_520ms: 2408 pollcnt = 5200; /* 520 millisec */ 2409 break; 2410 case IXGBE_PCIDEVCTRL2_1_2s: 2411 pollcnt = 20000; /* 2 sec */ 2412 break; 2413 case IXGBE_PCIDEVCTRL2_4_8s: 2414 pollcnt = 80000; /* 8 sec */ 2415 break; 2416 case IXGBE_PCIDEVCTRL2_17_34s: 2417 pollcnt = 34000; /* 34 sec */ 2418 break; 2419 case IXGBE_PCIDEVCTRL2_50_100us: /* 100 microsecs */ 2420 case IXGBE_PCIDEVCTRL2_1_2ms: /* 2 millisecs */ 2421 case IXGBE_PCIDEVCTRL2_16_32ms: /* 32 millisec */ 2422 case IXGBE_PCIDEVCTRL2_16_32ms_def: /* 32 millisec default */ 2423 default: 2424 pollcnt = 800; /* 80 millisec minimum */ 2425 break; 2426 } 2427 2428 /* add 10% to spec maximum */ 2429 return (pollcnt * 11) / 10; 2430 } 2431 2432 /** 2433 * ixgbe_disable_pcie_master - Disable PCI-express master access 2434 * @hw: pointer to hardware structure 2435 * 2436 * Disables PCI-Express master access and verifies there are no pending 2437 * requests. IXGBE_ERR_MASTER_REQUESTS_PENDING is returned if master disable 2438 * bit hasn't caused the master requests to be disabled, else 0 2439 * is returned signifying master requests disabled. 2440 **/ 2441 static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw) 2442 { 2443 u32 i, poll; 2444 u16 value; 2445 2446 /* Always set this bit to ensure any future transactions are blocked */ 2447 IXGBE_WRITE_REG(hw, IXGBE_CTRL, IXGBE_CTRL_GIO_DIS); 2448 2449 /* Exit if master requests are blocked */ 2450 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO) || 2451 ixgbe_removed(hw->hw_addr)) 2452 return 0; 2453 2454 /* Poll for master request bit to clear */ 2455 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) { 2456 udelay(100); 2457 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO)) 2458 return 0; 2459 } 2460 2461 /* 2462 * Two consecutive resets are required via CTRL.RST per datasheet 2463 * 5.2.5.3.2 Master Disable. We set a flag to inform the reset routine 2464 * of this need. The first reset prevents new master requests from 2465 * being issued by our device. We then must wait 1usec or more for any 2466 * remaining completions from the PCIe bus to trickle in, and then reset 2467 * again to clear out any effects they may have had on our device. 2468 */ 2469 hw_dbg(hw, "GIO Master Disable bit didn't clear - requesting resets\n"); 2470 hw->mac.flags |= IXGBE_FLAGS_DOUBLE_RESET_REQUIRED; 2471 2472 /* 2473 * Before proceeding, make sure that the PCIe block does not have 2474 * transactions pending. 2475 */ 2476 poll = ixgbe_pcie_timeout_poll(hw); 2477 for (i = 0; i < poll; i++) { 2478 udelay(100); 2479 value = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_STATUS); 2480 if (ixgbe_removed(hw->hw_addr)) 2481 return 0; 2482 if (!(value & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING)) 2483 return 0; 2484 } 2485 2486 hw_dbg(hw, "PCIe transaction pending bit also did not clear.\n"); 2487 return IXGBE_ERR_MASTER_REQUESTS_PENDING; 2488 } 2489 2490 /** 2491 * ixgbe_acquire_swfw_sync - Acquire SWFW semaphore 2492 * @hw: pointer to hardware structure 2493 * @mask: Mask to specify which semaphore to acquire 2494 * 2495 * Acquires the SWFW semaphore through the GSSR register for the specified 2496 * function (CSR, PHY0, PHY1, EEPROM, Flash) 2497 **/ 2498 s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u32 mask) 2499 { 2500 u32 gssr = 0; 2501 u32 swmask = mask; 2502 u32 fwmask = mask << 5; 2503 u32 timeout = 200; 2504 u32 i; 2505 2506 for (i = 0; i < timeout; i++) { 2507 /* 2508 * SW NVM semaphore bit is used for access to all 2509 * SW_FW_SYNC bits (not just NVM) 2510 */ 2511 if (ixgbe_get_eeprom_semaphore(hw)) 2512 return IXGBE_ERR_SWFW_SYNC; 2513 2514 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR); 2515 if (!(gssr & (fwmask | swmask))) { 2516 gssr |= swmask; 2517 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr); 2518 ixgbe_release_eeprom_semaphore(hw); 2519 return 0; 2520 } else { 2521 /* Resource is currently in use by FW or SW */ 2522 ixgbe_release_eeprom_semaphore(hw); 2523 usleep_range(5000, 10000); 2524 } 2525 } 2526 2527 /* If time expired clear the bits holding the lock and retry */ 2528 if (gssr & (fwmask | swmask)) 2529 ixgbe_release_swfw_sync(hw, gssr & (fwmask | swmask)); 2530 2531 usleep_range(5000, 10000); 2532 return IXGBE_ERR_SWFW_SYNC; 2533 } 2534 2535 /** 2536 * ixgbe_release_swfw_sync - Release SWFW semaphore 2537 * @hw: pointer to hardware structure 2538 * @mask: Mask to specify which semaphore to release 2539 * 2540 * Releases the SWFW semaphore through the GSSR register for the specified 2541 * function (CSR, PHY0, PHY1, EEPROM, Flash) 2542 **/ 2543 void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u32 mask) 2544 { 2545 u32 gssr; 2546 u32 swmask = mask; 2547 2548 ixgbe_get_eeprom_semaphore(hw); 2549 2550 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR); 2551 gssr &= ~swmask; 2552 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr); 2553 2554 ixgbe_release_eeprom_semaphore(hw); 2555 } 2556 2557 /** 2558 * prot_autoc_read_generic - Hides MAC differences needed for AUTOC read 2559 * @hw: pointer to hardware structure 2560 * @reg_val: Value we read from AUTOC 2561 * @locked: bool to indicate whether the SW/FW lock should be taken. Never 2562 * true in this the generic case. 2563 * 2564 * The default case requires no protection so just to the register read. 2565 **/ 2566 s32 prot_autoc_read_generic(struct ixgbe_hw *hw, bool *locked, u32 *reg_val) 2567 { 2568 *locked = false; 2569 *reg_val = IXGBE_READ_REG(hw, IXGBE_AUTOC); 2570 return 0; 2571 } 2572 2573 /** 2574 * prot_autoc_write_generic - Hides MAC differences needed for AUTOC write 2575 * @hw: pointer to hardware structure 2576 * @reg_val: value to write to AUTOC 2577 * @locked: bool to indicate whether the SW/FW lock was already taken by 2578 * previous read. 2579 **/ 2580 s32 prot_autoc_write_generic(struct ixgbe_hw *hw, u32 reg_val, bool locked) 2581 { 2582 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, reg_val); 2583 return 0; 2584 } 2585 2586 /** 2587 * ixgbe_disable_rx_buff_generic - Stops the receive data path 2588 * @hw: pointer to hardware structure 2589 * 2590 * Stops the receive data path and waits for the HW to internally 2591 * empty the Rx security block. 2592 **/ 2593 s32 ixgbe_disable_rx_buff_generic(struct ixgbe_hw *hw) 2594 { 2595 #define IXGBE_MAX_SECRX_POLL 40 2596 int i; 2597 int secrxreg; 2598 2599 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL); 2600 secrxreg |= IXGBE_SECRXCTRL_RX_DIS; 2601 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg); 2602 for (i = 0; i < IXGBE_MAX_SECRX_POLL; i++) { 2603 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXSTAT); 2604 if (secrxreg & IXGBE_SECRXSTAT_SECRX_RDY) 2605 break; 2606 else 2607 /* Use interrupt-safe sleep just in case */ 2608 udelay(1000); 2609 } 2610 2611 /* For informational purposes only */ 2612 if (i >= IXGBE_MAX_SECRX_POLL) 2613 hw_dbg(hw, "Rx unit being enabled before security path fully disabled. Continuing with init.\n"); 2614 2615 return 0; 2616 2617 } 2618 2619 /** 2620 * ixgbe_enable_rx_buff - Enables the receive data path 2621 * @hw: pointer to hardware structure 2622 * 2623 * Enables the receive data path 2624 **/ 2625 s32 ixgbe_enable_rx_buff_generic(struct ixgbe_hw *hw) 2626 { 2627 int secrxreg; 2628 2629 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL); 2630 secrxreg &= ~IXGBE_SECRXCTRL_RX_DIS; 2631 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg); 2632 IXGBE_WRITE_FLUSH(hw); 2633 2634 return 0; 2635 } 2636 2637 /** 2638 * ixgbe_enable_rx_dma_generic - Enable the Rx DMA unit 2639 * @hw: pointer to hardware structure 2640 * @regval: register value to write to RXCTRL 2641 * 2642 * Enables the Rx DMA unit 2643 **/ 2644 s32 ixgbe_enable_rx_dma_generic(struct ixgbe_hw *hw, u32 regval) 2645 { 2646 if (regval & IXGBE_RXCTRL_RXEN) 2647 hw->mac.ops.enable_rx(hw); 2648 else 2649 hw->mac.ops.disable_rx(hw); 2650 2651 return 0; 2652 } 2653 2654 /** 2655 * ixgbe_blink_led_start_generic - Blink LED based on index. 2656 * @hw: pointer to hardware structure 2657 * @index: led number to blink 2658 **/ 2659 s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index) 2660 { 2661 ixgbe_link_speed speed = 0; 2662 bool link_up = false; 2663 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC); 2664 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL); 2665 bool locked = false; 2666 s32 ret_val; 2667 2668 /* 2669 * Link must be up to auto-blink the LEDs; 2670 * Force it if link is down. 2671 */ 2672 hw->mac.ops.check_link(hw, &speed, &link_up, false); 2673 2674 if (!link_up) { 2675 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg); 2676 if (ret_val) 2677 return ret_val; 2678 2679 autoc_reg |= IXGBE_AUTOC_AN_RESTART; 2680 autoc_reg |= IXGBE_AUTOC_FLU; 2681 2682 ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked); 2683 if (ret_val) 2684 return ret_val; 2685 2686 IXGBE_WRITE_FLUSH(hw); 2687 2688 usleep_range(10000, 20000); 2689 } 2690 2691 led_reg &= ~IXGBE_LED_MODE_MASK(index); 2692 led_reg |= IXGBE_LED_BLINK(index); 2693 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg); 2694 IXGBE_WRITE_FLUSH(hw); 2695 2696 return 0; 2697 } 2698 2699 /** 2700 * ixgbe_blink_led_stop_generic - Stop blinking LED based on index. 2701 * @hw: pointer to hardware structure 2702 * @index: led number to stop blinking 2703 **/ 2704 s32 ixgbe_blink_led_stop_generic(struct ixgbe_hw *hw, u32 index) 2705 { 2706 u32 autoc_reg = 0; 2707 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL); 2708 bool locked = false; 2709 s32 ret_val; 2710 2711 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg); 2712 if (ret_val) 2713 return ret_val; 2714 2715 autoc_reg &= ~IXGBE_AUTOC_FLU; 2716 autoc_reg |= IXGBE_AUTOC_AN_RESTART; 2717 2718 ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked); 2719 if (ret_val) 2720 return ret_val; 2721 2722 led_reg &= ~IXGBE_LED_MODE_MASK(index); 2723 led_reg &= ~IXGBE_LED_BLINK(index); 2724 led_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index); 2725 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg); 2726 IXGBE_WRITE_FLUSH(hw); 2727 2728 return 0; 2729 } 2730 2731 /** 2732 * ixgbe_get_san_mac_addr_offset - Get SAN MAC address offset from the EEPROM 2733 * @hw: pointer to hardware structure 2734 * @san_mac_offset: SAN MAC address offset 2735 * 2736 * This function will read the EEPROM location for the SAN MAC address 2737 * pointer, and returns the value at that location. This is used in both 2738 * get and set mac_addr routines. 2739 **/ 2740 static s32 ixgbe_get_san_mac_addr_offset(struct ixgbe_hw *hw, 2741 u16 *san_mac_offset) 2742 { 2743 s32 ret_val; 2744 2745 /* 2746 * First read the EEPROM pointer to see if the MAC addresses are 2747 * available. 2748 */ 2749 ret_val = hw->eeprom.ops.read(hw, IXGBE_SAN_MAC_ADDR_PTR, 2750 san_mac_offset); 2751 if (ret_val) 2752 hw_err(hw, "eeprom read at offset %d failed\n", 2753 IXGBE_SAN_MAC_ADDR_PTR); 2754 2755 return ret_val; 2756 } 2757 2758 /** 2759 * ixgbe_get_san_mac_addr_generic - SAN MAC address retrieval from the EEPROM 2760 * @hw: pointer to hardware structure 2761 * @san_mac_addr: SAN MAC address 2762 * 2763 * Reads the SAN MAC address from the EEPROM, if it's available. This is 2764 * per-port, so set_lan_id() must be called before reading the addresses. 2765 * set_lan_id() is called by identify_sfp(), but this cannot be relied 2766 * upon for non-SFP connections, so we must call it here. 2767 **/ 2768 s32 ixgbe_get_san_mac_addr_generic(struct ixgbe_hw *hw, u8 *san_mac_addr) 2769 { 2770 u16 san_mac_data, san_mac_offset; 2771 u8 i; 2772 s32 ret_val; 2773 2774 /* 2775 * First read the EEPROM pointer to see if the MAC addresses are 2776 * available. If they're not, no point in calling set_lan_id() here. 2777 */ 2778 ret_val = ixgbe_get_san_mac_addr_offset(hw, &san_mac_offset); 2779 if (ret_val || san_mac_offset == 0 || san_mac_offset == 0xFFFF) 2780 2781 goto san_mac_addr_clr; 2782 2783 /* make sure we know which port we need to program */ 2784 hw->mac.ops.set_lan_id(hw); 2785 /* apply the port offset to the address offset */ 2786 (hw->bus.func) ? (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT1_OFFSET) : 2787 (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT0_OFFSET); 2788 for (i = 0; i < 3; i++) { 2789 ret_val = hw->eeprom.ops.read(hw, san_mac_offset, 2790 &san_mac_data); 2791 if (ret_val) { 2792 hw_err(hw, "eeprom read at offset %d failed\n", 2793 san_mac_offset); 2794 goto san_mac_addr_clr; 2795 } 2796 san_mac_addr[i * 2] = (u8)(san_mac_data); 2797 san_mac_addr[i * 2 + 1] = (u8)(san_mac_data >> 8); 2798 san_mac_offset++; 2799 } 2800 return 0; 2801 2802 san_mac_addr_clr: 2803 /* No addresses available in this EEPROM. It's not necessarily an 2804 * error though, so just wipe the local address and return. 2805 */ 2806 for (i = 0; i < 6; i++) 2807 san_mac_addr[i] = 0xFF; 2808 return ret_val; 2809 } 2810 2811 /** 2812 * ixgbe_get_pcie_msix_count_generic - Gets MSI-X vector count 2813 * @hw: pointer to hardware structure 2814 * 2815 * Read PCIe configuration space, and get the MSI-X vector count from 2816 * the capabilities table. 2817 **/ 2818 u16 ixgbe_get_pcie_msix_count_generic(struct ixgbe_hw *hw) 2819 { 2820 u16 msix_count; 2821 u16 max_msix_count; 2822 u16 pcie_offset; 2823 2824 switch (hw->mac.type) { 2825 case ixgbe_mac_82598EB: 2826 pcie_offset = IXGBE_PCIE_MSIX_82598_CAPS; 2827 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82598; 2828 break; 2829 case ixgbe_mac_82599EB: 2830 case ixgbe_mac_X540: 2831 case ixgbe_mac_X550: 2832 case ixgbe_mac_X550EM_x: 2833 pcie_offset = IXGBE_PCIE_MSIX_82599_CAPS; 2834 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82599; 2835 break; 2836 default: 2837 return 1; 2838 } 2839 2840 msix_count = ixgbe_read_pci_cfg_word(hw, pcie_offset); 2841 if (ixgbe_removed(hw->hw_addr)) 2842 msix_count = 0; 2843 msix_count &= IXGBE_PCIE_MSIX_TBL_SZ_MASK; 2844 2845 /* MSI-X count is zero-based in HW */ 2846 msix_count++; 2847 2848 if (msix_count > max_msix_count) 2849 msix_count = max_msix_count; 2850 2851 return msix_count; 2852 } 2853 2854 /** 2855 * ixgbe_clear_vmdq_generic - Disassociate a VMDq pool index from a rx address 2856 * @hw: pointer to hardware struct 2857 * @rar: receive address register index to disassociate 2858 * @vmdq: VMDq pool index to remove from the rar 2859 **/ 2860 s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq) 2861 { 2862 u32 mpsar_lo, mpsar_hi; 2863 u32 rar_entries = hw->mac.num_rar_entries; 2864 2865 /* Make sure we are using a valid rar index range */ 2866 if (rar >= rar_entries) { 2867 hw_dbg(hw, "RAR index %d is out of range.\n", rar); 2868 return IXGBE_ERR_INVALID_ARGUMENT; 2869 } 2870 2871 mpsar_lo = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar)); 2872 mpsar_hi = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar)); 2873 2874 if (ixgbe_removed(hw->hw_addr)) 2875 return 0; 2876 2877 if (!mpsar_lo && !mpsar_hi) 2878 return 0; 2879 2880 if (vmdq == IXGBE_CLEAR_VMDQ_ALL) { 2881 if (mpsar_lo) { 2882 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0); 2883 mpsar_lo = 0; 2884 } 2885 if (mpsar_hi) { 2886 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0); 2887 mpsar_hi = 0; 2888 } 2889 } else if (vmdq < 32) { 2890 mpsar_lo &= ~(1 << vmdq); 2891 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar_lo); 2892 } else { 2893 mpsar_hi &= ~(1 << (vmdq - 32)); 2894 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar_hi); 2895 } 2896 2897 /* was that the last pool using this rar? */ 2898 if (mpsar_lo == 0 && mpsar_hi == 0 && rar != 0) 2899 hw->mac.ops.clear_rar(hw, rar); 2900 return 0; 2901 } 2902 2903 /** 2904 * ixgbe_set_vmdq_generic - Associate a VMDq pool index with a rx address 2905 * @hw: pointer to hardware struct 2906 * @rar: receive address register index to associate with a VMDq index 2907 * @vmdq: VMDq pool index 2908 **/ 2909 s32 ixgbe_set_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq) 2910 { 2911 u32 mpsar; 2912 u32 rar_entries = hw->mac.num_rar_entries; 2913 2914 /* Make sure we are using a valid rar index range */ 2915 if (rar >= rar_entries) { 2916 hw_dbg(hw, "RAR index %d is out of range.\n", rar); 2917 return IXGBE_ERR_INVALID_ARGUMENT; 2918 } 2919 2920 if (vmdq < 32) { 2921 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar)); 2922 mpsar |= 1 << vmdq; 2923 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar); 2924 } else { 2925 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar)); 2926 mpsar |= 1 << (vmdq - 32); 2927 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar); 2928 } 2929 return 0; 2930 } 2931 2932 /** 2933 * This function should only be involved in the IOV mode. 2934 * In IOV mode, Default pool is next pool after the number of 2935 * VFs advertized and not 0. 2936 * MPSAR table needs to be updated for SAN_MAC RAR [hw->mac.san_mac_rar_index] 2937 * 2938 * ixgbe_set_vmdq_san_mac - Associate default VMDq pool index with a rx address 2939 * @hw: pointer to hardware struct 2940 * @vmdq: VMDq pool index 2941 **/ 2942 s32 ixgbe_set_vmdq_san_mac_generic(struct ixgbe_hw *hw, u32 vmdq) 2943 { 2944 u32 rar = hw->mac.san_mac_rar_index; 2945 2946 if (vmdq < 32) { 2947 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 1 << vmdq); 2948 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0); 2949 } else { 2950 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0); 2951 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 1 << (vmdq - 32)); 2952 } 2953 2954 return 0; 2955 } 2956 2957 /** 2958 * ixgbe_init_uta_tables_generic - Initialize the Unicast Table Array 2959 * @hw: pointer to hardware structure 2960 **/ 2961 s32 ixgbe_init_uta_tables_generic(struct ixgbe_hw *hw) 2962 { 2963 int i; 2964 2965 for (i = 0; i < 128; i++) 2966 IXGBE_WRITE_REG(hw, IXGBE_UTA(i), 0); 2967 2968 return 0; 2969 } 2970 2971 /** 2972 * ixgbe_find_vlvf_slot - find the vlanid or the first empty slot 2973 * @hw: pointer to hardware structure 2974 * @vlan: VLAN id to write to VLAN filter 2975 * 2976 * return the VLVF index where this VLAN id should be placed 2977 * 2978 **/ 2979 static s32 ixgbe_find_vlvf_slot(struct ixgbe_hw *hw, u32 vlan) 2980 { 2981 u32 bits = 0; 2982 u32 first_empty_slot = 0; 2983 s32 regindex; 2984 2985 /* short cut the special case */ 2986 if (vlan == 0) 2987 return 0; 2988 2989 /* 2990 * Search for the vlan id in the VLVF entries. Save off the first empty 2991 * slot found along the way 2992 */ 2993 for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) { 2994 bits = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex)); 2995 if (!bits && !(first_empty_slot)) 2996 first_empty_slot = regindex; 2997 else if ((bits & 0x0FFF) == vlan) 2998 break; 2999 } 3000 3001 /* 3002 * If regindex is less than IXGBE_VLVF_ENTRIES, then we found the vlan 3003 * in the VLVF. Else use the first empty VLVF register for this 3004 * vlan id. 3005 */ 3006 if (regindex >= IXGBE_VLVF_ENTRIES) { 3007 if (first_empty_slot) 3008 regindex = first_empty_slot; 3009 else { 3010 hw_dbg(hw, "No space in VLVF.\n"); 3011 regindex = IXGBE_ERR_NO_SPACE; 3012 } 3013 } 3014 3015 return regindex; 3016 } 3017 3018 /** 3019 * ixgbe_set_vfta_generic - Set VLAN filter table 3020 * @hw: pointer to hardware structure 3021 * @vlan: VLAN id to write to VLAN filter 3022 * @vind: VMDq output index that maps queue to VLAN id in VFVFB 3023 * @vlan_on: boolean flag to turn on/off VLAN in VFVF 3024 * 3025 * Turn on/off specified VLAN in the VLAN filter table. 3026 **/ 3027 s32 ixgbe_set_vfta_generic(struct ixgbe_hw *hw, u32 vlan, u32 vind, 3028 bool vlan_on) 3029 { 3030 s32 regindex; 3031 u32 bitindex; 3032 u32 vfta; 3033 u32 bits; 3034 u32 vt; 3035 u32 targetbit; 3036 bool vfta_changed = false; 3037 3038 if (vlan > 4095) 3039 return IXGBE_ERR_PARAM; 3040 3041 /* 3042 * this is a 2 part operation - first the VFTA, then the 3043 * VLVF and VLVFB if VT Mode is set 3044 * We don't write the VFTA until we know the VLVF part succeeded. 3045 */ 3046 3047 /* Part 1 3048 * The VFTA is a bitstring made up of 128 32-bit registers 3049 * that enable the particular VLAN id, much like the MTA: 3050 * bits[11-5]: which register 3051 * bits[4-0]: which bit in the register 3052 */ 3053 regindex = (vlan >> 5) & 0x7F; 3054 bitindex = vlan & 0x1F; 3055 targetbit = (1 << bitindex); 3056 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(regindex)); 3057 3058 if (vlan_on) { 3059 if (!(vfta & targetbit)) { 3060 vfta |= targetbit; 3061 vfta_changed = true; 3062 } 3063 } else { 3064 if ((vfta & targetbit)) { 3065 vfta &= ~targetbit; 3066 vfta_changed = true; 3067 } 3068 } 3069 3070 /* Part 2 3071 * If VT Mode is set 3072 * Either vlan_on 3073 * make sure the vlan is in VLVF 3074 * set the vind bit in the matching VLVFB 3075 * Or !vlan_on 3076 * clear the pool bit and possibly the vind 3077 */ 3078 vt = IXGBE_READ_REG(hw, IXGBE_VT_CTL); 3079 if (vt & IXGBE_VT_CTL_VT_ENABLE) { 3080 s32 vlvf_index; 3081 3082 vlvf_index = ixgbe_find_vlvf_slot(hw, vlan); 3083 if (vlvf_index < 0) 3084 return vlvf_index; 3085 3086 if (vlan_on) { 3087 /* set the pool bit */ 3088 if (vind < 32) { 3089 bits = IXGBE_READ_REG(hw, 3090 IXGBE_VLVFB(vlvf_index*2)); 3091 bits |= (1 << vind); 3092 IXGBE_WRITE_REG(hw, 3093 IXGBE_VLVFB(vlvf_index*2), 3094 bits); 3095 } else { 3096 bits = IXGBE_READ_REG(hw, 3097 IXGBE_VLVFB((vlvf_index*2)+1)); 3098 bits |= (1 << (vind-32)); 3099 IXGBE_WRITE_REG(hw, 3100 IXGBE_VLVFB((vlvf_index*2)+1), 3101 bits); 3102 } 3103 } else { 3104 /* clear the pool bit */ 3105 if (vind < 32) { 3106 bits = IXGBE_READ_REG(hw, 3107 IXGBE_VLVFB(vlvf_index*2)); 3108 bits &= ~(1 << vind); 3109 IXGBE_WRITE_REG(hw, 3110 IXGBE_VLVFB(vlvf_index*2), 3111 bits); 3112 bits |= IXGBE_READ_REG(hw, 3113 IXGBE_VLVFB((vlvf_index*2)+1)); 3114 } else { 3115 bits = IXGBE_READ_REG(hw, 3116 IXGBE_VLVFB((vlvf_index*2)+1)); 3117 bits &= ~(1 << (vind-32)); 3118 IXGBE_WRITE_REG(hw, 3119 IXGBE_VLVFB((vlvf_index*2)+1), 3120 bits); 3121 bits |= IXGBE_READ_REG(hw, 3122 IXGBE_VLVFB(vlvf_index*2)); 3123 } 3124 } 3125 3126 /* 3127 * If there are still bits set in the VLVFB registers 3128 * for the VLAN ID indicated we need to see if the 3129 * caller is requesting that we clear the VFTA entry bit. 3130 * If the caller has requested that we clear the VFTA 3131 * entry bit but there are still pools/VFs using this VLAN 3132 * ID entry then ignore the request. We're not worried 3133 * about the case where we're turning the VFTA VLAN ID 3134 * entry bit on, only when requested to turn it off as 3135 * there may be multiple pools and/or VFs using the 3136 * VLAN ID entry. In that case we cannot clear the 3137 * VFTA bit until all pools/VFs using that VLAN ID have also 3138 * been cleared. This will be indicated by "bits" being 3139 * zero. 3140 */ 3141 if (bits) { 3142 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), 3143 (IXGBE_VLVF_VIEN | vlan)); 3144 if (!vlan_on) { 3145 /* someone wants to clear the vfta entry 3146 * but some pools/VFs are still using it. 3147 * Ignore it. */ 3148 vfta_changed = false; 3149 } 3150 } else { 3151 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), 0); 3152 } 3153 } 3154 3155 if (vfta_changed) 3156 IXGBE_WRITE_REG(hw, IXGBE_VFTA(regindex), vfta); 3157 3158 return 0; 3159 } 3160 3161 /** 3162 * ixgbe_clear_vfta_generic - Clear VLAN filter table 3163 * @hw: pointer to hardware structure 3164 * 3165 * Clears the VLAN filer table, and the VMDq index associated with the filter 3166 **/ 3167 s32 ixgbe_clear_vfta_generic(struct ixgbe_hw *hw) 3168 { 3169 u32 offset; 3170 3171 for (offset = 0; offset < hw->mac.vft_size; offset++) 3172 IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0); 3173 3174 for (offset = 0; offset < IXGBE_VLVF_ENTRIES; offset++) { 3175 IXGBE_WRITE_REG(hw, IXGBE_VLVF(offset), 0); 3176 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset*2), 0); 3177 IXGBE_WRITE_REG(hw, IXGBE_VLVFB((offset*2)+1), 0); 3178 } 3179 3180 return 0; 3181 } 3182 3183 /** 3184 * ixgbe_check_mac_link_generic - Determine link and speed status 3185 * @hw: pointer to hardware structure 3186 * @speed: pointer to link speed 3187 * @link_up: true when link is up 3188 * @link_up_wait_to_complete: bool used to wait for link up or not 3189 * 3190 * Reads the links register to determine if link is up and the current speed 3191 **/ 3192 s32 ixgbe_check_mac_link_generic(struct ixgbe_hw *hw, ixgbe_link_speed *speed, 3193 bool *link_up, bool link_up_wait_to_complete) 3194 { 3195 u32 links_reg, links_orig; 3196 u32 i; 3197 3198 /* clear the old state */ 3199 links_orig = IXGBE_READ_REG(hw, IXGBE_LINKS); 3200 3201 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS); 3202 3203 if (links_orig != links_reg) { 3204 hw_dbg(hw, "LINKS changed from %08X to %08X\n", 3205 links_orig, links_reg); 3206 } 3207 3208 if (link_up_wait_to_complete) { 3209 for (i = 0; i < IXGBE_LINK_UP_TIME; i++) { 3210 if (links_reg & IXGBE_LINKS_UP) { 3211 *link_up = true; 3212 break; 3213 } else { 3214 *link_up = false; 3215 } 3216 msleep(100); 3217 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS); 3218 } 3219 } else { 3220 if (links_reg & IXGBE_LINKS_UP) 3221 *link_up = true; 3222 else 3223 *link_up = false; 3224 } 3225 3226 switch (links_reg & IXGBE_LINKS_SPEED_82599) { 3227 case IXGBE_LINKS_SPEED_10G_82599: 3228 if ((hw->mac.type >= ixgbe_mac_X550) && 3229 (links_reg & IXGBE_LINKS_SPEED_NON_STD)) 3230 *speed = IXGBE_LINK_SPEED_2_5GB_FULL; 3231 else 3232 *speed = IXGBE_LINK_SPEED_10GB_FULL; 3233 break; 3234 case IXGBE_LINKS_SPEED_1G_82599: 3235 *speed = IXGBE_LINK_SPEED_1GB_FULL; 3236 break; 3237 case IXGBE_LINKS_SPEED_100_82599: 3238 if ((hw->mac.type >= ixgbe_mac_X550) && 3239 (links_reg & IXGBE_LINKS_SPEED_NON_STD)) 3240 *speed = IXGBE_LINK_SPEED_5GB_FULL; 3241 else 3242 *speed = IXGBE_LINK_SPEED_100_FULL; 3243 break; 3244 default: 3245 *speed = IXGBE_LINK_SPEED_UNKNOWN; 3246 } 3247 3248 return 0; 3249 } 3250 3251 /** 3252 * ixgbe_get_wwn_prefix_generic - Get alternative WWNN/WWPN prefix from 3253 * the EEPROM 3254 * @hw: pointer to hardware structure 3255 * @wwnn_prefix: the alternative WWNN prefix 3256 * @wwpn_prefix: the alternative WWPN prefix 3257 * 3258 * This function will read the EEPROM from the alternative SAN MAC address 3259 * block to check the support for the alternative WWNN/WWPN prefix support. 3260 **/ 3261 s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix, 3262 u16 *wwpn_prefix) 3263 { 3264 u16 offset, caps; 3265 u16 alt_san_mac_blk_offset; 3266 3267 /* clear output first */ 3268 *wwnn_prefix = 0xFFFF; 3269 *wwpn_prefix = 0xFFFF; 3270 3271 /* check if alternative SAN MAC is supported */ 3272 offset = IXGBE_ALT_SAN_MAC_ADDR_BLK_PTR; 3273 if (hw->eeprom.ops.read(hw, offset, &alt_san_mac_blk_offset)) 3274 goto wwn_prefix_err; 3275 3276 if ((alt_san_mac_blk_offset == 0) || 3277 (alt_san_mac_blk_offset == 0xFFFF)) 3278 return 0; 3279 3280 /* check capability in alternative san mac address block */ 3281 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_CAPS_OFFSET; 3282 if (hw->eeprom.ops.read(hw, offset, &caps)) 3283 goto wwn_prefix_err; 3284 if (!(caps & IXGBE_ALT_SAN_MAC_ADDR_CAPS_ALTWWN)) 3285 return 0; 3286 3287 /* get the corresponding prefix for WWNN/WWPN */ 3288 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWNN_OFFSET; 3289 if (hw->eeprom.ops.read(hw, offset, wwnn_prefix)) 3290 hw_err(hw, "eeprom read at offset %d failed\n", offset); 3291 3292 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWPN_OFFSET; 3293 if (hw->eeprom.ops.read(hw, offset, wwpn_prefix)) 3294 goto wwn_prefix_err; 3295 3296 return 0; 3297 3298 wwn_prefix_err: 3299 hw_err(hw, "eeprom read at offset %d failed\n", offset); 3300 return 0; 3301 } 3302 3303 /** 3304 * ixgbe_set_mac_anti_spoofing - Enable/Disable MAC anti-spoofing 3305 * @hw: pointer to hardware structure 3306 * @enable: enable or disable switch for anti-spoofing 3307 * @pf: Physical Function pool - do not enable anti-spoofing for the PF 3308 * 3309 **/ 3310 void ixgbe_set_mac_anti_spoofing(struct ixgbe_hw *hw, bool enable, int pf) 3311 { 3312 int j; 3313 int pf_target_reg = pf >> 3; 3314 int pf_target_shift = pf % 8; 3315 u32 pfvfspoof = 0; 3316 3317 if (hw->mac.type == ixgbe_mac_82598EB) 3318 return; 3319 3320 if (enable) 3321 pfvfspoof = IXGBE_SPOOF_MACAS_MASK; 3322 3323 /* 3324 * PFVFSPOOF register array is size 8 with 8 bits assigned to 3325 * MAC anti-spoof enables in each register array element. 3326 */ 3327 for (j = 0; j < pf_target_reg; j++) 3328 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), pfvfspoof); 3329 3330 /* 3331 * The PF should be allowed to spoof so that it can support 3332 * emulation mode NICs. Do not set the bits assigned to the PF 3333 */ 3334 pfvfspoof &= (1 << pf_target_shift) - 1; 3335 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), pfvfspoof); 3336 3337 /* 3338 * Remaining pools belong to the PF so they do not need to have 3339 * anti-spoofing enabled. 3340 */ 3341 for (j++; j < IXGBE_PFVFSPOOF_REG_COUNT; j++) 3342 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), 0); 3343 } 3344 3345 /** 3346 * ixgbe_set_vlan_anti_spoofing - Enable/Disable VLAN anti-spoofing 3347 * @hw: pointer to hardware structure 3348 * @enable: enable or disable switch for VLAN anti-spoofing 3349 * @pf: Virtual Function pool - VF Pool to set for VLAN anti-spoofing 3350 * 3351 **/ 3352 void ixgbe_set_vlan_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf) 3353 { 3354 int vf_target_reg = vf >> 3; 3355 int vf_target_shift = vf % 8 + IXGBE_SPOOF_VLANAS_SHIFT; 3356 u32 pfvfspoof; 3357 3358 if (hw->mac.type == ixgbe_mac_82598EB) 3359 return; 3360 3361 pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); 3362 if (enable) 3363 pfvfspoof |= (1 << vf_target_shift); 3364 else 3365 pfvfspoof &= ~(1 << vf_target_shift); 3366 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof); 3367 } 3368 3369 /** 3370 * ixgbe_get_device_caps_generic - Get additional device capabilities 3371 * @hw: pointer to hardware structure 3372 * @device_caps: the EEPROM word with the extra device capabilities 3373 * 3374 * This function will read the EEPROM location for the device capabilities, 3375 * and return the word through device_caps. 3376 **/ 3377 s32 ixgbe_get_device_caps_generic(struct ixgbe_hw *hw, u16 *device_caps) 3378 { 3379 hw->eeprom.ops.read(hw, IXGBE_DEVICE_CAPS, device_caps); 3380 3381 return 0; 3382 } 3383 3384 /** 3385 * ixgbe_set_rxpba_generic - Initialize RX packet buffer 3386 * @hw: pointer to hardware structure 3387 * @num_pb: number of packet buffers to allocate 3388 * @headroom: reserve n KB of headroom 3389 * @strategy: packet buffer allocation strategy 3390 **/ 3391 void ixgbe_set_rxpba_generic(struct ixgbe_hw *hw, 3392 int num_pb, 3393 u32 headroom, 3394 int strategy) 3395 { 3396 u32 pbsize = hw->mac.rx_pb_size; 3397 int i = 0; 3398 u32 rxpktsize, txpktsize, txpbthresh; 3399 3400 /* Reserve headroom */ 3401 pbsize -= headroom; 3402 3403 if (!num_pb) 3404 num_pb = 1; 3405 3406 /* Divide remaining packet buffer space amongst the number 3407 * of packet buffers requested using supplied strategy. 3408 */ 3409 switch (strategy) { 3410 case (PBA_STRATEGY_WEIGHTED): 3411 /* pba_80_48 strategy weight first half of packet buffer with 3412 * 5/8 of the packet buffer space. 3413 */ 3414 rxpktsize = ((pbsize * 5 * 2) / (num_pb * 8)); 3415 pbsize -= rxpktsize * (num_pb / 2); 3416 rxpktsize <<= IXGBE_RXPBSIZE_SHIFT; 3417 for (; i < (num_pb / 2); i++) 3418 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize); 3419 /* Fall through to configure remaining packet buffers */ 3420 case (PBA_STRATEGY_EQUAL): 3421 /* Divide the remaining Rx packet buffer evenly among the TCs */ 3422 rxpktsize = (pbsize / (num_pb - i)) << IXGBE_RXPBSIZE_SHIFT; 3423 for (; i < num_pb; i++) 3424 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize); 3425 break; 3426 default: 3427 break; 3428 } 3429 3430 /* 3431 * Setup Tx packet buffer and threshold equally for all TCs 3432 * TXPBTHRESH register is set in K so divide by 1024 and subtract 3433 * 10 since the largest packet we support is just over 9K. 3434 */ 3435 txpktsize = IXGBE_TXPBSIZE_MAX / num_pb; 3436 txpbthresh = (txpktsize / 1024) - IXGBE_TXPKT_SIZE_MAX; 3437 for (i = 0; i < num_pb; i++) { 3438 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize); 3439 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh); 3440 } 3441 3442 /* Clear unused TCs, if any, to zero buffer size*/ 3443 for (; i < IXGBE_MAX_PB; i++) { 3444 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0); 3445 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0); 3446 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0); 3447 } 3448 } 3449 3450 /** 3451 * ixgbe_calculate_checksum - Calculate checksum for buffer 3452 * @buffer: pointer to EEPROM 3453 * @length: size of EEPROM to calculate a checksum for 3454 * 3455 * Calculates the checksum for some buffer on a specified length. The 3456 * checksum calculated is returned. 3457 **/ 3458 static u8 ixgbe_calculate_checksum(u8 *buffer, u32 length) 3459 { 3460 u32 i; 3461 u8 sum = 0; 3462 3463 if (!buffer) 3464 return 0; 3465 3466 for (i = 0; i < length; i++) 3467 sum += buffer[i]; 3468 3469 return (u8) (0 - sum); 3470 } 3471 3472 /** 3473 * ixgbe_host_interface_command - Issue command to manageability block 3474 * @hw: pointer to the HW structure 3475 * @buffer: contains the command to write and where the return status will 3476 * be placed 3477 * @length: length of buffer, must be multiple of 4 bytes 3478 * @timeout: time in ms to wait for command completion 3479 * @return_data: read and return data from the buffer (true) or not (false) 3480 * Needed because FW structures are big endian and decoding of 3481 * these fields can be 8 bit or 16 bit based on command. Decoding 3482 * is not easily understood without making a table of commands. 3483 * So we will leave this up to the caller to read back the data 3484 * in these cases. 3485 * 3486 * Communicates with the manageability block. On success return 0 3487 * else return IXGBE_ERR_HOST_INTERFACE_COMMAND. 3488 **/ 3489 s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, u32 *buffer, 3490 u32 length, u32 timeout, 3491 bool return_data) 3492 { 3493 u32 hicr, i, bi, fwsts; 3494 u32 hdr_size = sizeof(struct ixgbe_hic_hdr); 3495 u16 buf_len, dword_len; 3496 3497 if (length == 0 || length > IXGBE_HI_MAX_BLOCK_BYTE_LENGTH) { 3498 hw_dbg(hw, "Buffer length failure buffersize-%d.\n", length); 3499 return IXGBE_ERR_HOST_INTERFACE_COMMAND; 3500 } 3501 3502 /* Set bit 9 of FWSTS clearing FW reset indication */ 3503 fwsts = IXGBE_READ_REG(hw, IXGBE_FWSTS); 3504 IXGBE_WRITE_REG(hw, IXGBE_FWSTS, fwsts | IXGBE_FWSTS_FWRI); 3505 3506 /* Check that the host interface is enabled. */ 3507 hicr = IXGBE_READ_REG(hw, IXGBE_HICR); 3508 if ((hicr & IXGBE_HICR_EN) == 0) { 3509 hw_dbg(hw, "IXGBE_HOST_EN bit disabled.\n"); 3510 return IXGBE_ERR_HOST_INTERFACE_COMMAND; 3511 } 3512 3513 /* Calculate length in DWORDs. We must be DWORD aligned */ 3514 if ((length % (sizeof(u32))) != 0) { 3515 hw_dbg(hw, "Buffer length failure, not aligned to dword"); 3516 return IXGBE_ERR_INVALID_ARGUMENT; 3517 } 3518 3519 dword_len = length >> 2; 3520 3521 /* 3522 * The device driver writes the relevant command block 3523 * into the ram area. 3524 */ 3525 for (i = 0; i < dword_len; i++) 3526 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_FLEX_MNG, 3527 i, cpu_to_le32(buffer[i])); 3528 3529 /* Setting this bit tells the ARC that a new command is pending. */ 3530 IXGBE_WRITE_REG(hw, IXGBE_HICR, hicr | IXGBE_HICR_C); 3531 3532 for (i = 0; i < timeout; i++) { 3533 hicr = IXGBE_READ_REG(hw, IXGBE_HICR); 3534 if (!(hicr & IXGBE_HICR_C)) 3535 break; 3536 usleep_range(1000, 2000); 3537 } 3538 3539 /* Check command successful completion. */ 3540 if ((timeout != 0 && i == timeout) || 3541 (!(IXGBE_READ_REG(hw, IXGBE_HICR) & IXGBE_HICR_SV))) { 3542 hw_dbg(hw, "Command has failed with no status valid.\n"); 3543 return IXGBE_ERR_HOST_INTERFACE_COMMAND; 3544 } 3545 3546 if (!return_data) 3547 return 0; 3548 3549 /* Calculate length in DWORDs */ 3550 dword_len = hdr_size >> 2; 3551 3552 /* first pull in the header so we know the buffer length */ 3553 for (bi = 0; bi < dword_len; bi++) { 3554 buffer[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi); 3555 le32_to_cpus(&buffer[bi]); 3556 } 3557 3558 /* If there is any thing in data position pull it in */ 3559 buf_len = ((struct ixgbe_hic_hdr *)buffer)->buf_len; 3560 if (buf_len == 0) 3561 return 0; 3562 3563 if (length < (buf_len + hdr_size)) { 3564 hw_dbg(hw, "Buffer not large enough for reply message.\n"); 3565 return IXGBE_ERR_HOST_INTERFACE_COMMAND; 3566 } 3567 3568 /* Calculate length in DWORDs, add 3 for odd lengths */ 3569 dword_len = (buf_len + 3) >> 2; 3570 3571 /* Pull in the rest of the buffer (bi is where we left off)*/ 3572 for (; bi <= dword_len; bi++) { 3573 buffer[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi); 3574 le32_to_cpus(&buffer[bi]); 3575 } 3576 3577 return 0; 3578 } 3579 3580 /** 3581 * ixgbe_set_fw_drv_ver_generic - Sends driver version to firmware 3582 * @hw: pointer to the HW structure 3583 * @maj: driver version major number 3584 * @min: driver version minor number 3585 * @build: driver version build number 3586 * @sub: driver version sub build number 3587 * 3588 * Sends driver version number to firmware through the manageability 3589 * block. On success return 0 3590 * else returns IXGBE_ERR_SWFW_SYNC when encountering an error acquiring 3591 * semaphore or IXGBE_ERR_HOST_INTERFACE_COMMAND when command fails. 3592 **/ 3593 s32 ixgbe_set_fw_drv_ver_generic(struct ixgbe_hw *hw, u8 maj, u8 min, 3594 u8 build, u8 sub) 3595 { 3596 struct ixgbe_hic_drv_info fw_cmd; 3597 int i; 3598 s32 ret_val; 3599 3600 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM)) 3601 return IXGBE_ERR_SWFW_SYNC; 3602 3603 fw_cmd.hdr.cmd = FW_CEM_CMD_DRIVER_INFO; 3604 fw_cmd.hdr.buf_len = FW_CEM_CMD_DRIVER_INFO_LEN; 3605 fw_cmd.hdr.cmd_or_resp.cmd_resv = FW_CEM_CMD_RESERVED; 3606 fw_cmd.port_num = (u8)hw->bus.func; 3607 fw_cmd.ver_maj = maj; 3608 fw_cmd.ver_min = min; 3609 fw_cmd.ver_build = build; 3610 fw_cmd.ver_sub = sub; 3611 fw_cmd.hdr.checksum = 0; 3612 fw_cmd.hdr.checksum = ixgbe_calculate_checksum((u8 *)&fw_cmd, 3613 (FW_CEM_HDR_LEN + fw_cmd.hdr.buf_len)); 3614 fw_cmd.pad = 0; 3615 fw_cmd.pad2 = 0; 3616 3617 for (i = 0; i <= FW_CEM_MAX_RETRIES; i++) { 3618 ret_val = ixgbe_host_interface_command(hw, (u32 *)&fw_cmd, 3619 sizeof(fw_cmd), 3620 IXGBE_HI_COMMAND_TIMEOUT, 3621 true); 3622 if (ret_val != 0) 3623 continue; 3624 3625 if (fw_cmd.hdr.cmd_or_resp.ret_status == 3626 FW_CEM_RESP_STATUS_SUCCESS) 3627 ret_val = 0; 3628 else 3629 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND; 3630 3631 break; 3632 } 3633 3634 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM); 3635 return ret_val; 3636 } 3637 3638 /** 3639 * ixgbe_clear_tx_pending - Clear pending TX work from the PCIe fifo 3640 * @hw: pointer to the hardware structure 3641 * 3642 * The 82599 and x540 MACs can experience issues if TX work is still pending 3643 * when a reset occurs. This function prevents this by flushing the PCIe 3644 * buffers on the system. 3645 **/ 3646 void ixgbe_clear_tx_pending(struct ixgbe_hw *hw) 3647 { 3648 u32 gcr_ext, hlreg0, i, poll; 3649 u16 value; 3650 3651 /* 3652 * If double reset is not requested then all transactions should 3653 * already be clear and as such there is no work to do 3654 */ 3655 if (!(hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED)) 3656 return; 3657 3658 /* 3659 * Set loopback enable to prevent any transmits from being sent 3660 * should the link come up. This assumes that the RXCTRL.RXEN bit 3661 * has already been cleared. 3662 */ 3663 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0); 3664 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0 | IXGBE_HLREG0_LPBK); 3665 3666 /* wait for a last completion before clearing buffers */ 3667 IXGBE_WRITE_FLUSH(hw); 3668 usleep_range(3000, 6000); 3669 3670 /* Before proceeding, make sure that the PCIe block does not have 3671 * transactions pending. 3672 */ 3673 poll = ixgbe_pcie_timeout_poll(hw); 3674 for (i = 0; i < poll; i++) { 3675 usleep_range(100, 200); 3676 value = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_STATUS); 3677 if (ixgbe_removed(hw->hw_addr)) 3678 break; 3679 if (!(value & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING)) 3680 break; 3681 } 3682 3683 /* initiate cleaning flow for buffers in the PCIe transaction layer */ 3684 gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT); 3685 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 3686 gcr_ext | IXGBE_GCR_EXT_BUFFERS_CLEAR); 3687 3688 /* Flush all writes and allow 20usec for all transactions to clear */ 3689 IXGBE_WRITE_FLUSH(hw); 3690 udelay(20); 3691 3692 /* restore previous register values */ 3693 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext); 3694 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0); 3695 } 3696 3697 static const u8 ixgbe_emc_temp_data[4] = { 3698 IXGBE_EMC_INTERNAL_DATA, 3699 IXGBE_EMC_DIODE1_DATA, 3700 IXGBE_EMC_DIODE2_DATA, 3701 IXGBE_EMC_DIODE3_DATA 3702 }; 3703 static const u8 ixgbe_emc_therm_limit[4] = { 3704 IXGBE_EMC_INTERNAL_THERM_LIMIT, 3705 IXGBE_EMC_DIODE1_THERM_LIMIT, 3706 IXGBE_EMC_DIODE2_THERM_LIMIT, 3707 IXGBE_EMC_DIODE3_THERM_LIMIT 3708 }; 3709 3710 /** 3711 * ixgbe_get_ets_data - Extracts the ETS bit data 3712 * @hw: pointer to hardware structure 3713 * @ets_cfg: extected ETS data 3714 * @ets_offset: offset of ETS data 3715 * 3716 * Returns error code. 3717 **/ 3718 static s32 ixgbe_get_ets_data(struct ixgbe_hw *hw, u16 *ets_cfg, 3719 u16 *ets_offset) 3720 { 3721 s32 status; 3722 3723 status = hw->eeprom.ops.read(hw, IXGBE_ETS_CFG, ets_offset); 3724 if (status) 3725 return status; 3726 3727 if ((*ets_offset == 0x0000) || (*ets_offset == 0xFFFF)) 3728 return IXGBE_NOT_IMPLEMENTED; 3729 3730 status = hw->eeprom.ops.read(hw, *ets_offset, ets_cfg); 3731 if (status) 3732 return status; 3733 3734 if ((*ets_cfg & IXGBE_ETS_TYPE_MASK) != IXGBE_ETS_TYPE_EMC_SHIFTED) 3735 return IXGBE_NOT_IMPLEMENTED; 3736 3737 return 0; 3738 } 3739 3740 /** 3741 * ixgbe_get_thermal_sensor_data - Gathers thermal sensor data 3742 * @hw: pointer to hardware structure 3743 * 3744 * Returns the thermal sensor data structure 3745 **/ 3746 s32 ixgbe_get_thermal_sensor_data_generic(struct ixgbe_hw *hw) 3747 { 3748 s32 status; 3749 u16 ets_offset; 3750 u16 ets_cfg; 3751 u16 ets_sensor; 3752 u8 num_sensors; 3753 u8 i; 3754 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data; 3755 3756 /* Only support thermal sensors attached to physical port 0 */ 3757 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) 3758 return IXGBE_NOT_IMPLEMENTED; 3759 3760 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset); 3761 if (status) 3762 return status; 3763 3764 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK); 3765 if (num_sensors > IXGBE_MAX_SENSORS) 3766 num_sensors = IXGBE_MAX_SENSORS; 3767 3768 for (i = 0; i < num_sensors; i++) { 3769 u8 sensor_index; 3770 u8 sensor_location; 3771 3772 status = hw->eeprom.ops.read(hw, (ets_offset + 1 + i), 3773 &ets_sensor); 3774 if (status) 3775 return status; 3776 3777 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >> 3778 IXGBE_ETS_DATA_INDEX_SHIFT); 3779 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >> 3780 IXGBE_ETS_DATA_LOC_SHIFT); 3781 3782 if (sensor_location != 0) { 3783 status = hw->phy.ops.read_i2c_byte(hw, 3784 ixgbe_emc_temp_data[sensor_index], 3785 IXGBE_I2C_THERMAL_SENSOR_ADDR, 3786 &data->sensor[i].temp); 3787 if (status) 3788 return status; 3789 } 3790 } 3791 3792 return 0; 3793 } 3794 3795 /** 3796 * ixgbe_init_thermal_sensor_thresh_generic - Inits thermal sensor thresholds 3797 * @hw: pointer to hardware structure 3798 * 3799 * Inits the thermal sensor thresholds according to the NVM map 3800 * and save off the threshold and location values into mac.thermal_sensor_data 3801 **/ 3802 s32 ixgbe_init_thermal_sensor_thresh_generic(struct ixgbe_hw *hw) 3803 { 3804 s32 status; 3805 u16 ets_offset; 3806 u16 ets_cfg; 3807 u16 ets_sensor; 3808 u8 low_thresh_delta; 3809 u8 num_sensors; 3810 u8 therm_limit; 3811 u8 i; 3812 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data; 3813 3814 memset(data, 0, sizeof(struct ixgbe_thermal_sensor_data)); 3815 3816 /* Only support thermal sensors attached to physical port 0 */ 3817 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) 3818 return IXGBE_NOT_IMPLEMENTED; 3819 3820 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset); 3821 if (status) 3822 return status; 3823 3824 low_thresh_delta = ((ets_cfg & IXGBE_ETS_LTHRES_DELTA_MASK) >> 3825 IXGBE_ETS_LTHRES_DELTA_SHIFT); 3826 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK); 3827 if (num_sensors > IXGBE_MAX_SENSORS) 3828 num_sensors = IXGBE_MAX_SENSORS; 3829 3830 for (i = 0; i < num_sensors; i++) { 3831 u8 sensor_index; 3832 u8 sensor_location; 3833 3834 if (hw->eeprom.ops.read(hw, ets_offset + 1 + i, &ets_sensor)) { 3835 hw_err(hw, "eeprom read at offset %d failed\n", 3836 ets_offset + 1 + i); 3837 continue; 3838 } 3839 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >> 3840 IXGBE_ETS_DATA_INDEX_SHIFT); 3841 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >> 3842 IXGBE_ETS_DATA_LOC_SHIFT); 3843 therm_limit = ets_sensor & IXGBE_ETS_DATA_HTHRESH_MASK; 3844 3845 hw->phy.ops.write_i2c_byte(hw, 3846 ixgbe_emc_therm_limit[sensor_index], 3847 IXGBE_I2C_THERMAL_SENSOR_ADDR, therm_limit); 3848 3849 if (sensor_location == 0) 3850 continue; 3851 3852 data->sensor[i].location = sensor_location; 3853 data->sensor[i].caution_thresh = therm_limit; 3854 data->sensor[i].max_op_thresh = therm_limit - low_thresh_delta; 3855 } 3856 3857 return 0; 3858 } 3859 3860 void ixgbe_disable_rx_generic(struct ixgbe_hw *hw) 3861 { 3862 u32 rxctrl; 3863 3864 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); 3865 if (rxctrl & IXGBE_RXCTRL_RXEN) { 3866 if (hw->mac.type != ixgbe_mac_82598EB) { 3867 u32 pfdtxgswc; 3868 3869 pfdtxgswc = IXGBE_READ_REG(hw, IXGBE_PFDTXGSWC); 3870 if (pfdtxgswc & IXGBE_PFDTXGSWC_VT_LBEN) { 3871 pfdtxgswc &= ~IXGBE_PFDTXGSWC_VT_LBEN; 3872 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, pfdtxgswc); 3873 hw->mac.set_lben = true; 3874 } else { 3875 hw->mac.set_lben = false; 3876 } 3877 } 3878 rxctrl &= ~IXGBE_RXCTRL_RXEN; 3879 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl); 3880 } 3881 } 3882 3883 void ixgbe_enable_rx_generic(struct ixgbe_hw *hw) 3884 { 3885 u32 rxctrl; 3886 3887 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); 3888 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, (rxctrl | IXGBE_RXCTRL_RXEN)); 3889 3890 if (hw->mac.type != ixgbe_mac_82598EB) { 3891 if (hw->mac.set_lben) { 3892 u32 pfdtxgswc; 3893 3894 pfdtxgswc = IXGBE_READ_REG(hw, IXGBE_PFDTXGSWC); 3895 pfdtxgswc |= IXGBE_PFDTXGSWC_VT_LBEN; 3896 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, pfdtxgswc); 3897 hw->mac.set_lben = false; 3898 } 3899 } 3900 } 3901