1 /****************************************************************************** 2 SPDX-License-Identifier: BSD-3-Clause 3 4 Copyright (c) 2001-2017, Intel Corporation 5 All rights reserved. 6 7 Redistribution and use in source and binary forms, with or without 8 modification, are permitted provided that the following conditions are met: 9 10 1. Redistributions of source code must retain the above copyright notice, 11 this list of conditions and the following disclaimer. 12 13 2. Redistributions in binary form must reproduce the above copyright 14 notice, this list of conditions and the following disclaimer in the 15 documentation and/or other materials provided with the distribution. 16 17 3. Neither the name of the Intel Corporation nor the names of its 18 contributors may be used to endorse or promote products derived from 19 this software without specific prior written permission. 20 21 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 22 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 25 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 POSSIBILITY OF SUCH DAMAGE. 32 33 ******************************************************************************/ 34 /*$FreeBSD$*/ 35 36 #include "ixgbe_type.h" 37 #include "ixgbe_82598.h" 38 #include "ixgbe_api.h" 39 #include "ixgbe_common.h" 40 #include "ixgbe_phy.h" 41 42 #define IXGBE_82598_MAX_TX_QUEUES 32 43 #define IXGBE_82598_MAX_RX_QUEUES 64 44 #define IXGBE_82598_RAR_ENTRIES 16 45 #define IXGBE_82598_MC_TBL_SIZE 128 46 #define IXGBE_82598_VFT_TBL_SIZE 128 47 #define IXGBE_82598_RX_PB_SIZE 512 48 49 static s32 ixgbe_get_link_capabilities_82598(struct ixgbe_hw *hw, 50 ixgbe_link_speed *speed, 51 bool *autoneg); 52 static enum ixgbe_media_type ixgbe_get_media_type_82598(struct ixgbe_hw *hw); 53 static s32 ixgbe_start_mac_link_82598(struct ixgbe_hw *hw, 54 bool autoneg_wait_to_complete); 55 static s32 ixgbe_check_mac_link_82598(struct ixgbe_hw *hw, 56 ixgbe_link_speed *speed, bool *link_up, 57 bool link_up_wait_to_complete); 58 static s32 ixgbe_setup_mac_link_82598(struct ixgbe_hw *hw, 59 ixgbe_link_speed speed, 60 bool autoneg_wait_to_complete); 61 static s32 ixgbe_setup_copper_link_82598(struct ixgbe_hw *hw, 62 ixgbe_link_speed speed, 63 bool autoneg_wait_to_complete); 64 static s32 ixgbe_reset_hw_82598(struct ixgbe_hw *hw); 65 static s32 ixgbe_clear_vmdq_82598(struct ixgbe_hw *hw, u32 rar, u32 vmdq); 66 static s32 ixgbe_clear_vfta_82598(struct ixgbe_hw *hw); 67 static void ixgbe_set_rxpba_82598(struct ixgbe_hw *hw, int num_pb, 68 u32 headroom, int strategy); 69 static s32 ixgbe_read_i2c_sff8472_82598(struct ixgbe_hw *hw, u8 byte_offset, 70 u8 *sff8472_data); 71 /** 72 * ixgbe_set_pcie_completion_timeout - set pci-e completion timeout 73 * @hw: pointer to the HW structure 74 * 75 * The defaults for 82598 should be in the range of 50us to 50ms, 76 * however the hardware default for these parts is 500us to 1ms which is less 77 * than the 10ms recommended by the pci-e spec. To address this we need to 78 * increase the value to either 10ms to 250ms for capability version 1 config, 79 * or 16ms to 55ms for version 2. 80 **/ 81 void ixgbe_set_pcie_completion_timeout(struct ixgbe_hw *hw) 82 { 83 u32 gcr = IXGBE_READ_REG(hw, IXGBE_GCR); 84 u16 pcie_devctl2; 85 86 /* only take action if timeout value is defaulted to 0 */ 87 if (gcr & IXGBE_GCR_CMPL_TMOUT_MASK) 88 goto out; 89 90 /* 91 * if capababilities version is type 1 we can write the 92 * timeout of 10ms to 250ms through the GCR register 93 */ 94 if (!(gcr & IXGBE_GCR_CAP_VER2)) { 95 gcr |= IXGBE_GCR_CMPL_TMOUT_10ms; 96 goto out; 97 } 98 99 /* 100 * for version 2 capabilities we need to write the config space 101 * directly in order to set the completion timeout value for 102 * 16ms to 55ms 103 */ 104 pcie_devctl2 = IXGBE_READ_PCIE_WORD(hw, IXGBE_PCI_DEVICE_CONTROL2); 105 pcie_devctl2 |= IXGBE_PCI_DEVICE_CONTROL2_16ms; 106 IXGBE_WRITE_PCIE_WORD(hw, IXGBE_PCI_DEVICE_CONTROL2, pcie_devctl2); 107 out: 108 /* disable completion timeout resend */ 109 gcr &= ~IXGBE_GCR_CMPL_TMOUT_RESEND; 110 IXGBE_WRITE_REG(hw, IXGBE_GCR, gcr); 111 } 112 113 /** 114 * ixgbe_init_ops_82598 - Inits func ptrs and MAC type 115 * @hw: pointer to hardware structure 116 * 117 * Initialize the function pointers and assign the MAC type for 82598. 118 * Does not touch the hardware. 119 **/ 120 s32 ixgbe_init_ops_82598(struct ixgbe_hw *hw) 121 { 122 struct ixgbe_mac_info *mac = &hw->mac; 123 struct ixgbe_phy_info *phy = &hw->phy; 124 s32 ret_val; 125 126 DEBUGFUNC("ixgbe_init_ops_82598"); 127 128 ret_val = ixgbe_init_phy_ops_generic(hw); 129 ret_val = ixgbe_init_ops_generic(hw); 130 131 /* PHY */ 132 phy->ops.init = ixgbe_init_phy_ops_82598; 133 134 /* MAC */ 135 mac->ops.start_hw = ixgbe_start_hw_82598; 136 mac->ops.enable_relaxed_ordering = ixgbe_enable_relaxed_ordering_82598; 137 mac->ops.reset_hw = ixgbe_reset_hw_82598; 138 mac->ops.get_media_type = ixgbe_get_media_type_82598; 139 mac->ops.get_supported_physical_layer = 140 ixgbe_get_supported_physical_layer_82598; 141 mac->ops.read_analog_reg8 = ixgbe_read_analog_reg8_82598; 142 mac->ops.write_analog_reg8 = ixgbe_write_analog_reg8_82598; 143 mac->ops.set_lan_id = ixgbe_set_lan_id_multi_port_pcie_82598; 144 mac->ops.enable_rx_dma = ixgbe_enable_rx_dma_82598; 145 146 /* RAR, Multicast, VLAN */ 147 mac->ops.set_vmdq = ixgbe_set_vmdq_82598; 148 mac->ops.clear_vmdq = ixgbe_clear_vmdq_82598; 149 mac->ops.set_vfta = ixgbe_set_vfta_82598; 150 mac->ops.set_vlvf = NULL; 151 mac->ops.clear_vfta = ixgbe_clear_vfta_82598; 152 153 /* Flow Control */ 154 mac->ops.fc_enable = ixgbe_fc_enable_82598; 155 156 mac->mcft_size = IXGBE_82598_MC_TBL_SIZE; 157 mac->vft_size = IXGBE_82598_VFT_TBL_SIZE; 158 mac->num_rar_entries = IXGBE_82598_RAR_ENTRIES; 159 mac->rx_pb_size = IXGBE_82598_RX_PB_SIZE; 160 mac->max_rx_queues = IXGBE_82598_MAX_RX_QUEUES; 161 mac->max_tx_queues = IXGBE_82598_MAX_TX_QUEUES; 162 mac->max_msix_vectors = ixgbe_get_pcie_msix_count_generic(hw); 163 164 /* SFP+ Module */ 165 phy->ops.read_i2c_eeprom = ixgbe_read_i2c_eeprom_82598; 166 phy->ops.read_i2c_sff8472 = ixgbe_read_i2c_sff8472_82598; 167 168 /* Link */ 169 mac->ops.check_link = ixgbe_check_mac_link_82598; 170 mac->ops.setup_link = ixgbe_setup_mac_link_82598; 171 mac->ops.flap_tx_laser = NULL; 172 mac->ops.get_link_capabilities = ixgbe_get_link_capabilities_82598; 173 mac->ops.setup_rxpba = ixgbe_set_rxpba_82598; 174 175 /* Manageability interface */ 176 mac->ops.set_fw_drv_ver = NULL; 177 178 mac->ops.get_rtrup2tc = NULL; 179 180 return ret_val; 181 } 182 183 /** 184 * ixgbe_init_phy_ops_82598 - PHY/SFP specific init 185 * @hw: pointer to hardware structure 186 * 187 * Initialize any function pointers that were not able to be 188 * set during init_shared_code because the PHY/SFP type was 189 * not known. Perform the SFP init if necessary. 190 * 191 **/ 192 s32 ixgbe_init_phy_ops_82598(struct ixgbe_hw *hw) 193 { 194 struct ixgbe_mac_info *mac = &hw->mac; 195 struct ixgbe_phy_info *phy = &hw->phy; 196 s32 ret_val = IXGBE_SUCCESS; 197 u16 list_offset, data_offset; 198 199 DEBUGFUNC("ixgbe_init_phy_ops_82598"); 200 201 /* Identify the PHY */ 202 phy->ops.identify(hw); 203 204 /* Overwrite the link function pointers if copper PHY */ 205 if (mac->ops.get_media_type(hw) == ixgbe_media_type_copper) { 206 mac->ops.setup_link = ixgbe_setup_copper_link_82598; 207 mac->ops.get_link_capabilities = 208 ixgbe_get_copper_link_capabilities_generic; 209 } 210 211 switch (hw->phy.type) { 212 case ixgbe_phy_tn: 213 phy->ops.setup_link = ixgbe_setup_phy_link_tnx; 214 phy->ops.check_link = ixgbe_check_phy_link_tnx; 215 phy->ops.get_firmware_version = 216 ixgbe_get_phy_firmware_version_tnx; 217 break; 218 case ixgbe_phy_nl: 219 phy->ops.reset = ixgbe_reset_phy_nl; 220 221 /* Call SFP+ identify routine to get the SFP+ module type */ 222 ret_val = phy->ops.identify_sfp(hw); 223 if (ret_val != IXGBE_SUCCESS) 224 goto out; 225 else if (hw->phy.sfp_type == ixgbe_sfp_type_unknown) { 226 ret_val = IXGBE_ERR_SFP_NOT_SUPPORTED; 227 goto out; 228 } 229 230 /* Check to see if SFP+ module is supported */ 231 ret_val = ixgbe_get_sfp_init_sequence_offsets(hw, 232 &list_offset, 233 &data_offset); 234 if (ret_val != IXGBE_SUCCESS) { 235 ret_val = IXGBE_ERR_SFP_NOT_SUPPORTED; 236 goto out; 237 } 238 break; 239 default: 240 break; 241 } 242 243 out: 244 return ret_val; 245 } 246 247 /** 248 * ixgbe_start_hw_82598 - Prepare hardware for Tx/Rx 249 * @hw: pointer to hardware structure 250 * 251 * Starts the hardware using the generic start_hw function. 252 * Disables relaxed ordering Then set pcie completion timeout 253 * 254 **/ 255 s32 ixgbe_start_hw_82598(struct ixgbe_hw *hw) 256 { 257 u32 regval; 258 u32 i; 259 s32 ret_val = IXGBE_SUCCESS; 260 261 DEBUGFUNC("ixgbe_start_hw_82598"); 262 263 ret_val = ixgbe_start_hw_generic(hw); 264 if (ret_val) 265 return ret_val; 266 267 /* Disable relaxed ordering */ 268 for (i = 0; ((i < hw->mac.max_tx_queues) && 269 (i < IXGBE_DCA_MAX_QUEUES_82598)); i++) { 270 regval = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(i)); 271 regval &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN; 272 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(i), regval); 273 } 274 275 for (i = 0; ((i < hw->mac.max_rx_queues) && 276 (i < IXGBE_DCA_MAX_QUEUES_82598)); i++) { 277 regval = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i)); 278 regval &= ~(IXGBE_DCA_RXCTRL_DATA_WRO_EN | 279 IXGBE_DCA_RXCTRL_HEAD_WRO_EN); 280 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(i), regval); 281 } 282 283 /* set the completion timeout for interface */ 284 ixgbe_set_pcie_completion_timeout(hw); 285 286 return ret_val; 287 } 288 289 /** 290 * ixgbe_get_link_capabilities_82598 - Determines link capabilities 291 * @hw: pointer to hardware structure 292 * @speed: pointer to link speed 293 * @autoneg: boolean auto-negotiation value 294 * 295 * Determines the link capabilities by reading the AUTOC register. 296 **/ 297 static s32 ixgbe_get_link_capabilities_82598(struct ixgbe_hw *hw, 298 ixgbe_link_speed *speed, 299 bool *autoneg) 300 { 301 s32 status = IXGBE_SUCCESS; 302 u32 autoc = 0; 303 304 DEBUGFUNC("ixgbe_get_link_capabilities_82598"); 305 306 /* 307 * Determine link capabilities based on the stored value of AUTOC, 308 * which represents EEPROM defaults. If AUTOC value has not been 309 * stored, use the current register value. 310 */ 311 if (hw->mac.orig_link_settings_stored) 312 autoc = hw->mac.orig_autoc; 313 else 314 autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC); 315 316 switch (autoc & IXGBE_AUTOC_LMS_MASK) { 317 case IXGBE_AUTOC_LMS_1G_LINK_NO_AN: 318 *speed = IXGBE_LINK_SPEED_1GB_FULL; 319 *autoneg = FALSE; 320 break; 321 322 case IXGBE_AUTOC_LMS_10G_LINK_NO_AN: 323 *speed = IXGBE_LINK_SPEED_10GB_FULL; 324 *autoneg = FALSE; 325 break; 326 327 case IXGBE_AUTOC_LMS_1G_AN: 328 *speed = IXGBE_LINK_SPEED_1GB_FULL; 329 *autoneg = TRUE; 330 break; 331 332 case IXGBE_AUTOC_LMS_KX4_AN: 333 case IXGBE_AUTOC_LMS_KX4_AN_1G_AN: 334 *speed = IXGBE_LINK_SPEED_UNKNOWN; 335 if (autoc & IXGBE_AUTOC_KX4_SUPP) 336 *speed |= IXGBE_LINK_SPEED_10GB_FULL; 337 if (autoc & IXGBE_AUTOC_KX_SUPP) 338 *speed |= IXGBE_LINK_SPEED_1GB_FULL; 339 *autoneg = TRUE; 340 break; 341 342 default: 343 status = IXGBE_ERR_LINK_SETUP; 344 break; 345 } 346 347 return status; 348 } 349 350 /** 351 * ixgbe_get_media_type_82598 - Determines media type 352 * @hw: pointer to hardware structure 353 * 354 * Returns the media type (fiber, copper, backplane) 355 **/ 356 static enum ixgbe_media_type ixgbe_get_media_type_82598(struct ixgbe_hw *hw) 357 { 358 enum ixgbe_media_type media_type; 359 360 DEBUGFUNC("ixgbe_get_media_type_82598"); 361 362 /* Detect if there is a copper PHY attached. */ 363 switch (hw->phy.type) { 364 case ixgbe_phy_cu_unknown: 365 case ixgbe_phy_tn: 366 media_type = ixgbe_media_type_copper; 367 goto out; 368 default: 369 break; 370 } 371 372 /* Media type for I82598 is based on device ID */ 373 switch (hw->device_id) { 374 case IXGBE_DEV_ID_82598: 375 case IXGBE_DEV_ID_82598_BX: 376 /* Default device ID is mezzanine card KX/KX4 */ 377 media_type = ixgbe_media_type_backplane; 378 break; 379 case IXGBE_DEV_ID_82598AF_DUAL_PORT: 380 case IXGBE_DEV_ID_82598AF_SINGLE_PORT: 381 case IXGBE_DEV_ID_82598_DA_DUAL_PORT: 382 case IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM: 383 case IXGBE_DEV_ID_82598EB_XF_LR: 384 case IXGBE_DEV_ID_82598EB_SFP_LOM: 385 media_type = ixgbe_media_type_fiber; 386 break; 387 case IXGBE_DEV_ID_82598EB_CX4: 388 case IXGBE_DEV_ID_82598_CX4_DUAL_PORT: 389 media_type = ixgbe_media_type_cx4; 390 break; 391 case IXGBE_DEV_ID_82598AT: 392 case IXGBE_DEV_ID_82598AT2: 393 media_type = ixgbe_media_type_copper; 394 break; 395 default: 396 media_type = ixgbe_media_type_unknown; 397 break; 398 } 399 out: 400 return media_type; 401 } 402 403 /** 404 * ixgbe_fc_enable_82598 - Enable flow control 405 * @hw: pointer to hardware structure 406 * 407 * Enable flow control according to the current settings. 408 **/ 409 s32 ixgbe_fc_enable_82598(struct ixgbe_hw *hw) 410 { 411 s32 ret_val = IXGBE_SUCCESS; 412 u32 fctrl_reg; 413 u32 rmcs_reg; 414 u32 reg; 415 u32 fcrtl, fcrth; 416 u32 link_speed = 0; 417 int i; 418 bool link_up; 419 420 DEBUGFUNC("ixgbe_fc_enable_82598"); 421 422 /* Validate the water mark configuration */ 423 if (!hw->fc.pause_time) { 424 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS; 425 goto out; 426 } 427 428 /* Low water mark of zero causes XOFF floods */ 429 for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) { 430 if ((hw->fc.current_mode & ixgbe_fc_tx_pause) && 431 hw->fc.high_water[i]) { 432 if (!hw->fc.low_water[i] || 433 hw->fc.low_water[i] >= hw->fc.high_water[i]) { 434 DEBUGOUT("Invalid water mark configuration\n"); 435 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS; 436 goto out; 437 } 438 } 439 } 440 441 /* 442 * On 82598 having Rx FC on causes resets while doing 1G 443 * so if it's on turn it off once we know link_speed. For 444 * more details see 82598 Specification update. 445 */ 446 hw->mac.ops.check_link(hw, &link_speed, &link_up, FALSE); 447 if (link_up && link_speed == IXGBE_LINK_SPEED_1GB_FULL) { 448 switch (hw->fc.requested_mode) { 449 case ixgbe_fc_full: 450 hw->fc.requested_mode = ixgbe_fc_tx_pause; 451 break; 452 case ixgbe_fc_rx_pause: 453 hw->fc.requested_mode = ixgbe_fc_none; 454 break; 455 default: 456 /* no change */ 457 break; 458 } 459 } 460 461 /* Negotiate the fc mode to use */ 462 ixgbe_fc_autoneg(hw); 463 464 /* Disable any previous flow control settings */ 465 fctrl_reg = IXGBE_READ_REG(hw, IXGBE_FCTRL); 466 fctrl_reg &= ~(IXGBE_FCTRL_RFCE | IXGBE_FCTRL_RPFCE); 467 468 rmcs_reg = IXGBE_READ_REG(hw, IXGBE_RMCS); 469 rmcs_reg &= ~(IXGBE_RMCS_TFCE_PRIORITY | IXGBE_RMCS_TFCE_802_3X); 470 471 /* 472 * The possible values of fc.current_mode are: 473 * 0: Flow control is completely disabled 474 * 1: Rx flow control is enabled (we can receive pause frames, 475 * but not send pause frames). 476 * 2: Tx flow control is enabled (we can send pause frames but 477 * we do not support receiving pause frames). 478 * 3: Both Rx and Tx flow control (symmetric) are enabled. 479 * other: Invalid. 480 */ 481 switch (hw->fc.current_mode) { 482 case ixgbe_fc_none: 483 /* 484 * Flow control is disabled by software override or autoneg. 485 * The code below will actually disable it in the HW. 486 */ 487 break; 488 case ixgbe_fc_rx_pause: 489 /* 490 * Rx Flow control is enabled and Tx Flow control is 491 * disabled by software override. Since there really 492 * isn't a way to advertise that we are capable of RX 493 * Pause ONLY, we will advertise that we support both 494 * symmetric and asymmetric Rx PAUSE. Later, we will 495 * disable the adapter's ability to send PAUSE frames. 496 */ 497 fctrl_reg |= IXGBE_FCTRL_RFCE; 498 break; 499 case ixgbe_fc_tx_pause: 500 /* 501 * Tx Flow control is enabled, and Rx Flow control is 502 * disabled by software override. 503 */ 504 rmcs_reg |= IXGBE_RMCS_TFCE_802_3X; 505 break; 506 case ixgbe_fc_full: 507 /* Flow control (both Rx and Tx) is enabled by SW override. */ 508 fctrl_reg |= IXGBE_FCTRL_RFCE; 509 rmcs_reg |= IXGBE_RMCS_TFCE_802_3X; 510 break; 511 default: 512 DEBUGOUT("Flow control param set incorrectly\n"); 513 ret_val = IXGBE_ERR_CONFIG; 514 goto out; 515 break; 516 } 517 518 /* Set 802.3x based flow control settings. */ 519 fctrl_reg |= IXGBE_FCTRL_DPF; 520 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl_reg); 521 IXGBE_WRITE_REG(hw, IXGBE_RMCS, rmcs_reg); 522 523 /* Set up and enable Rx high/low water mark thresholds, enable XON. */ 524 for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) { 525 if ((hw->fc.current_mode & ixgbe_fc_tx_pause) && 526 hw->fc.high_water[i]) { 527 fcrtl = (hw->fc.low_water[i] << 10) | IXGBE_FCRTL_XONE; 528 fcrth = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN; 529 IXGBE_WRITE_REG(hw, IXGBE_FCRTL(i), fcrtl); 530 IXGBE_WRITE_REG(hw, IXGBE_FCRTH(i), fcrth); 531 } else { 532 IXGBE_WRITE_REG(hw, IXGBE_FCRTL(i), 0); 533 IXGBE_WRITE_REG(hw, IXGBE_FCRTH(i), 0); 534 } 535 536 } 537 538 /* Configure pause time (2 TCs per register) */ 539 reg = hw->fc.pause_time * 0x00010001; 540 for (i = 0; i < (IXGBE_DCB_MAX_TRAFFIC_CLASS / 2); i++) 541 IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg); 542 543 /* Configure flow control refresh threshold value */ 544 IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2); 545 546 out: 547 return ret_val; 548 } 549 550 /** 551 * ixgbe_start_mac_link_82598 - Configures MAC link settings 552 * @hw: pointer to hardware structure 553 * @autoneg_wait_to_complete: TRUE when waiting for completion is needed 554 * 555 * Configures link settings based on values in the ixgbe_hw struct. 556 * Restarts the link. Performs autonegotiation if needed. 557 **/ 558 static s32 ixgbe_start_mac_link_82598(struct ixgbe_hw *hw, 559 bool autoneg_wait_to_complete) 560 { 561 u32 autoc_reg; 562 u32 links_reg; 563 u32 i; 564 s32 status = IXGBE_SUCCESS; 565 566 DEBUGFUNC("ixgbe_start_mac_link_82598"); 567 568 /* Restart link */ 569 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC); 570 autoc_reg |= IXGBE_AUTOC_AN_RESTART; 571 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg); 572 573 /* Only poll for autoneg to complete if specified to do so */ 574 if (autoneg_wait_to_complete) { 575 if ((autoc_reg & IXGBE_AUTOC_LMS_MASK) == 576 IXGBE_AUTOC_LMS_KX4_AN || 577 (autoc_reg & IXGBE_AUTOC_LMS_MASK) == 578 IXGBE_AUTOC_LMS_KX4_AN_1G_AN) { 579 links_reg = 0; /* Just in case Autoneg time = 0 */ 580 for (i = 0; i < IXGBE_AUTO_NEG_TIME; i++) { 581 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS); 582 if (links_reg & IXGBE_LINKS_KX_AN_COMP) 583 break; 584 msec_delay(100); 585 } 586 if (!(links_reg & IXGBE_LINKS_KX_AN_COMP)) { 587 status = IXGBE_ERR_AUTONEG_NOT_COMPLETE; 588 DEBUGOUT("Autonegotiation did not complete.\n"); 589 } 590 } 591 } 592 593 /* Add delay to filter out noises during initial link setup */ 594 msec_delay(50); 595 596 return status; 597 } 598 599 /** 600 * ixgbe_validate_link_ready - Function looks for phy link 601 * @hw: pointer to hardware structure 602 * 603 * Function indicates success when phy link is available. If phy is not ready 604 * within 5 seconds of MAC indicating link, the function returns error. 605 **/ 606 static s32 ixgbe_validate_link_ready(struct ixgbe_hw *hw) 607 { 608 u32 timeout; 609 u16 an_reg; 610 611 if (hw->device_id != IXGBE_DEV_ID_82598AT2) 612 return IXGBE_SUCCESS; 613 614 for (timeout = 0; 615 timeout < IXGBE_VALIDATE_LINK_READY_TIMEOUT; timeout++) { 616 hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_STATUS, 617 IXGBE_MDIO_AUTO_NEG_DEV_TYPE, &an_reg); 618 619 if ((an_reg & IXGBE_MII_AUTONEG_COMPLETE) && 620 (an_reg & IXGBE_MII_AUTONEG_LINK_UP)) 621 break; 622 623 msec_delay(100); 624 } 625 626 if (timeout == IXGBE_VALIDATE_LINK_READY_TIMEOUT) { 627 DEBUGOUT("Link was indicated but link is down\n"); 628 return IXGBE_ERR_LINK_SETUP; 629 } 630 631 return IXGBE_SUCCESS; 632 } 633 634 /** 635 * ixgbe_check_mac_link_82598 - Get link/speed status 636 * @hw: pointer to hardware structure 637 * @speed: pointer to link speed 638 * @link_up: TRUE is link is up, FALSE otherwise 639 * @link_up_wait_to_complete: bool used to wait for link up or not 640 * 641 * Reads the links register to determine if link is up and the current speed 642 **/ 643 static s32 ixgbe_check_mac_link_82598(struct ixgbe_hw *hw, 644 ixgbe_link_speed *speed, bool *link_up, 645 bool link_up_wait_to_complete) 646 { 647 u32 links_reg; 648 u32 i; 649 u16 link_reg, adapt_comp_reg; 650 651 DEBUGFUNC("ixgbe_check_mac_link_82598"); 652 653 /* 654 * SERDES PHY requires us to read link status from undocumented 655 * register 0xC79F. Bit 0 set indicates link is up/ready; clear 656 * indicates link down. OxC00C is read to check that the XAUI lanes 657 * are active. Bit 0 clear indicates active; set indicates inactive. 658 */ 659 if (hw->phy.type == ixgbe_phy_nl) { 660 hw->phy.ops.read_reg(hw, 0xC79F, IXGBE_TWINAX_DEV, &link_reg); 661 hw->phy.ops.read_reg(hw, 0xC79F, IXGBE_TWINAX_DEV, &link_reg); 662 hw->phy.ops.read_reg(hw, 0xC00C, IXGBE_TWINAX_DEV, 663 &adapt_comp_reg); 664 if (link_up_wait_to_complete) { 665 for (i = 0; i < hw->mac.max_link_up_time; i++) { 666 if ((link_reg & 1) && 667 ((adapt_comp_reg & 1) == 0)) { 668 *link_up = TRUE; 669 break; 670 } else { 671 *link_up = FALSE; 672 } 673 msec_delay(100); 674 hw->phy.ops.read_reg(hw, 0xC79F, 675 IXGBE_TWINAX_DEV, 676 &link_reg); 677 hw->phy.ops.read_reg(hw, 0xC00C, 678 IXGBE_TWINAX_DEV, 679 &adapt_comp_reg); 680 } 681 } else { 682 if ((link_reg & 1) && ((adapt_comp_reg & 1) == 0)) 683 *link_up = TRUE; 684 else 685 *link_up = FALSE; 686 } 687 688 if (*link_up == FALSE) 689 goto out; 690 } 691 692 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS); 693 if (link_up_wait_to_complete) { 694 for (i = 0; i < hw->mac.max_link_up_time; i++) { 695 if (links_reg & IXGBE_LINKS_UP) { 696 *link_up = TRUE; 697 break; 698 } else { 699 *link_up = FALSE; 700 } 701 msec_delay(100); 702 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS); 703 } 704 } else { 705 if (links_reg & IXGBE_LINKS_UP) 706 *link_up = TRUE; 707 else 708 *link_up = FALSE; 709 } 710 711 if (links_reg & IXGBE_LINKS_SPEED) 712 *speed = IXGBE_LINK_SPEED_10GB_FULL; 713 else 714 *speed = IXGBE_LINK_SPEED_1GB_FULL; 715 716 if ((hw->device_id == IXGBE_DEV_ID_82598AT2) && (*link_up == TRUE) && 717 (ixgbe_validate_link_ready(hw) != IXGBE_SUCCESS)) 718 *link_up = FALSE; 719 720 out: 721 return IXGBE_SUCCESS; 722 } 723 724 /** 725 * ixgbe_setup_mac_link_82598 - Set MAC link speed 726 * @hw: pointer to hardware structure 727 * @speed: new link speed 728 * @autoneg_wait_to_complete: TRUE when waiting for completion is needed 729 * 730 * Set the link speed in the AUTOC register and restarts link. 731 **/ 732 static s32 ixgbe_setup_mac_link_82598(struct ixgbe_hw *hw, 733 ixgbe_link_speed speed, 734 bool autoneg_wait_to_complete) 735 { 736 bool autoneg = FALSE; 737 s32 status = IXGBE_SUCCESS; 738 ixgbe_link_speed link_capabilities = IXGBE_LINK_SPEED_UNKNOWN; 739 u32 curr_autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC); 740 u32 autoc = curr_autoc; 741 u32 link_mode = autoc & IXGBE_AUTOC_LMS_MASK; 742 743 DEBUGFUNC("ixgbe_setup_mac_link_82598"); 744 745 /* Check to see if speed passed in is supported. */ 746 ixgbe_get_link_capabilities(hw, &link_capabilities, &autoneg); 747 speed &= link_capabilities; 748 749 if (speed == IXGBE_LINK_SPEED_UNKNOWN) 750 status = IXGBE_ERR_LINK_SETUP; 751 752 /* Set KX4/KX support according to speed requested */ 753 else if (link_mode == IXGBE_AUTOC_LMS_KX4_AN || 754 link_mode == IXGBE_AUTOC_LMS_KX4_AN_1G_AN) { 755 autoc &= ~IXGBE_AUTOC_KX4_KX_SUPP_MASK; 756 if (speed & IXGBE_LINK_SPEED_10GB_FULL) 757 autoc |= IXGBE_AUTOC_KX4_SUPP; 758 if (speed & IXGBE_LINK_SPEED_1GB_FULL) 759 autoc |= IXGBE_AUTOC_KX_SUPP; 760 if (autoc != curr_autoc) 761 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc); 762 } 763 764 if (status == IXGBE_SUCCESS) { 765 /* 766 * Setup and restart the link based on the new values in 767 * ixgbe_hw This will write the AUTOC register based on the new 768 * stored values 769 */ 770 status = ixgbe_start_mac_link_82598(hw, 771 autoneg_wait_to_complete); 772 } 773 774 return status; 775 } 776 777 778 /** 779 * ixgbe_setup_copper_link_82598 - Set the PHY autoneg advertised field 780 * @hw: pointer to hardware structure 781 * @speed: new link speed 782 * @autoneg_wait_to_complete: TRUE if waiting is needed to complete 783 * 784 * Sets the link speed in the AUTOC register in the MAC and restarts link. 785 **/ 786 static s32 ixgbe_setup_copper_link_82598(struct ixgbe_hw *hw, 787 ixgbe_link_speed speed, 788 bool autoneg_wait_to_complete) 789 { 790 s32 status; 791 792 DEBUGFUNC("ixgbe_setup_copper_link_82598"); 793 794 /* Setup the PHY according to input speed */ 795 status = hw->phy.ops.setup_link_speed(hw, speed, 796 autoneg_wait_to_complete); 797 /* Set up MAC */ 798 ixgbe_start_mac_link_82598(hw, autoneg_wait_to_complete); 799 800 return status; 801 } 802 803 /** 804 * ixgbe_reset_hw_82598 - Performs hardware reset 805 * @hw: pointer to hardware structure 806 * 807 * Resets the hardware by resetting the transmit and receive units, masks and 808 * clears all interrupts, performing a PHY reset, and performing a link (MAC) 809 * reset. 810 **/ 811 static s32 ixgbe_reset_hw_82598(struct ixgbe_hw *hw) 812 { 813 s32 status = IXGBE_SUCCESS; 814 s32 phy_status = IXGBE_SUCCESS; 815 u32 ctrl; 816 u32 gheccr; 817 u32 i; 818 u32 autoc; 819 u8 analog_val; 820 821 DEBUGFUNC("ixgbe_reset_hw_82598"); 822 823 /* Call adapter stop to disable tx/rx and clear interrupts */ 824 status = hw->mac.ops.stop_adapter(hw); 825 if (status != IXGBE_SUCCESS) 826 goto reset_hw_out; 827 828 /* 829 * Power up the Atlas Tx lanes if they are currently powered down. 830 * Atlas Tx lanes are powered down for MAC loopback tests, but 831 * they are not automatically restored on reset. 832 */ 833 hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK, &analog_val); 834 if (analog_val & IXGBE_ATLAS_PDN_TX_REG_EN) { 835 /* Enable Tx Atlas so packets can be transmitted again */ 836 hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK, 837 &analog_val); 838 analog_val &= ~IXGBE_ATLAS_PDN_TX_REG_EN; 839 hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK, 840 analog_val); 841 842 hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_10G, 843 &analog_val); 844 analog_val &= ~IXGBE_ATLAS_PDN_TX_10G_QL_ALL; 845 hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_10G, 846 analog_val); 847 848 hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_1G, 849 &analog_val); 850 analog_val &= ~IXGBE_ATLAS_PDN_TX_1G_QL_ALL; 851 hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_1G, 852 analog_val); 853 854 hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_AN, 855 &analog_val); 856 analog_val &= ~IXGBE_ATLAS_PDN_TX_AN_QL_ALL; 857 hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_AN, 858 analog_val); 859 } 860 861 /* Reset PHY */ 862 if (hw->phy.reset_disable == FALSE) { 863 /* PHY ops must be identified and initialized prior to reset */ 864 865 /* Init PHY and function pointers, perform SFP setup */ 866 phy_status = hw->phy.ops.init(hw); 867 if (phy_status == IXGBE_ERR_SFP_NOT_SUPPORTED) 868 goto reset_hw_out; 869 if (phy_status == IXGBE_ERR_SFP_NOT_PRESENT) 870 goto mac_reset_top; 871 872 hw->phy.ops.reset(hw); 873 } 874 875 mac_reset_top: 876 /* 877 * Issue global reset to the MAC. This needs to be a SW reset. 878 * If link reset is used, it might reset the MAC when mng is using it 879 */ 880 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL) | IXGBE_CTRL_RST; 881 IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl); 882 IXGBE_WRITE_FLUSH(hw); 883 884 /* Poll for reset bit to self-clear indicating reset is complete */ 885 for (i = 0; i < 10; i++) { 886 usec_delay(1); 887 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL); 888 if (!(ctrl & IXGBE_CTRL_RST)) 889 break; 890 } 891 if (ctrl & IXGBE_CTRL_RST) { 892 status = IXGBE_ERR_RESET_FAILED; 893 DEBUGOUT("Reset polling failed to complete.\n"); 894 } 895 896 msec_delay(50); 897 898 /* 899 * Double resets are required for recovery from certain error 900 * conditions. Between resets, it is necessary to stall to allow time 901 * for any pending HW events to complete. 902 */ 903 if (hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED) { 904 hw->mac.flags &= ~IXGBE_FLAGS_DOUBLE_RESET_REQUIRED; 905 goto mac_reset_top; 906 } 907 908 gheccr = IXGBE_READ_REG(hw, IXGBE_GHECCR); 909 gheccr &= ~((1 << 21) | (1 << 18) | (1 << 9) | (1 << 6)); 910 IXGBE_WRITE_REG(hw, IXGBE_GHECCR, gheccr); 911 912 /* 913 * Store the original AUTOC value if it has not been 914 * stored off yet. Otherwise restore the stored original 915 * AUTOC value since the reset operation sets back to deaults. 916 */ 917 autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC); 918 if (hw->mac.orig_link_settings_stored == FALSE) { 919 hw->mac.orig_autoc = autoc; 920 hw->mac.orig_link_settings_stored = TRUE; 921 } else if (autoc != hw->mac.orig_autoc) { 922 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, hw->mac.orig_autoc); 923 } 924 925 /* Store the permanent mac address */ 926 hw->mac.ops.get_mac_addr(hw, hw->mac.perm_addr); 927 928 /* 929 * Store MAC address from RAR0, clear receive address registers, and 930 * clear the multicast table 931 */ 932 hw->mac.ops.init_rx_addrs(hw); 933 934 reset_hw_out: 935 if (phy_status != IXGBE_SUCCESS) 936 status = phy_status; 937 938 return status; 939 } 940 941 /** 942 * ixgbe_set_vmdq_82598 - Associate a VMDq set index with a rx address 943 * @hw: pointer to hardware struct 944 * @rar: receive address register index to associate with a VMDq index 945 * @vmdq: VMDq set index 946 **/ 947 s32 ixgbe_set_vmdq_82598(struct ixgbe_hw *hw, u32 rar, u32 vmdq) 948 { 949 u32 rar_high; 950 u32 rar_entries = hw->mac.num_rar_entries; 951 952 DEBUGFUNC("ixgbe_set_vmdq_82598"); 953 954 /* Make sure we are using a valid rar index range */ 955 if (rar >= rar_entries) { 956 DEBUGOUT1("RAR index %d is out of range.\n", rar); 957 return IXGBE_ERR_INVALID_ARGUMENT; 958 } 959 960 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(rar)); 961 rar_high &= ~IXGBE_RAH_VIND_MASK; 962 rar_high |= ((vmdq << IXGBE_RAH_VIND_SHIFT) & IXGBE_RAH_VIND_MASK); 963 IXGBE_WRITE_REG(hw, IXGBE_RAH(rar), rar_high); 964 return IXGBE_SUCCESS; 965 } 966 967 /** 968 * ixgbe_clear_vmdq_82598 - Disassociate a VMDq set index from an rx address 969 * @hw: pointer to hardware struct 970 * @rar: receive address register index to associate with a VMDq index 971 * @vmdq: VMDq clear index (not used in 82598, but elsewhere) 972 **/ 973 static s32 ixgbe_clear_vmdq_82598(struct ixgbe_hw *hw, u32 rar, u32 vmdq) 974 { 975 u32 rar_high; 976 u32 rar_entries = hw->mac.num_rar_entries; 977 978 UNREFERENCED_1PARAMETER(vmdq); 979 980 /* Make sure we are using a valid rar index range */ 981 if (rar >= rar_entries) { 982 DEBUGOUT1("RAR index %d is out of range.\n", rar); 983 return IXGBE_ERR_INVALID_ARGUMENT; 984 } 985 986 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(rar)); 987 if (rar_high & IXGBE_RAH_VIND_MASK) { 988 rar_high &= ~IXGBE_RAH_VIND_MASK; 989 IXGBE_WRITE_REG(hw, IXGBE_RAH(rar), rar_high); 990 } 991 992 return IXGBE_SUCCESS; 993 } 994 995 /** 996 * ixgbe_set_vfta_82598 - Set VLAN filter table 997 * @hw: pointer to hardware structure 998 * @vlan: VLAN id to write to VLAN filter 999 * @vind: VMDq output index that maps queue to VLAN id in VFTA 1000 * @vlan_on: boolean flag to turn on/off VLAN in VFTA 1001 * @vlvf_bypass: boolean flag - unused 1002 * 1003 * Turn on/off specified VLAN in the VLAN filter table. 1004 **/ 1005 s32 ixgbe_set_vfta_82598(struct ixgbe_hw *hw, u32 vlan, u32 vind, 1006 bool vlan_on, bool vlvf_bypass) 1007 { 1008 u32 regindex; 1009 u32 bitindex; 1010 u32 bits; 1011 u32 vftabyte; 1012 1013 UNREFERENCED_1PARAMETER(vlvf_bypass); 1014 1015 DEBUGFUNC("ixgbe_set_vfta_82598"); 1016 1017 if (vlan > 4095) 1018 return IXGBE_ERR_PARAM; 1019 1020 /* Determine 32-bit word position in array */ 1021 regindex = (vlan >> 5) & 0x7F; /* upper seven bits */ 1022 1023 /* Determine the location of the (VMD) queue index */ 1024 vftabyte = ((vlan >> 3) & 0x03); /* bits (4:3) indicating byte array */ 1025 bitindex = (vlan & 0x7) << 2; /* lower 3 bits indicate nibble */ 1026 1027 /* Set the nibble for VMD queue index */ 1028 bits = IXGBE_READ_REG(hw, IXGBE_VFTAVIND(vftabyte, regindex)); 1029 bits &= (~(0x0F << bitindex)); 1030 bits |= (vind << bitindex); 1031 IXGBE_WRITE_REG(hw, IXGBE_VFTAVIND(vftabyte, regindex), bits); 1032 1033 /* Determine the location of the bit for this VLAN id */ 1034 bitindex = vlan & 0x1F; /* lower five bits */ 1035 1036 bits = IXGBE_READ_REG(hw, IXGBE_VFTA(regindex)); 1037 if (vlan_on) 1038 /* Turn on this VLAN id */ 1039 bits |= (1 << bitindex); 1040 else 1041 /* Turn off this VLAN id */ 1042 bits &= ~(1 << bitindex); 1043 IXGBE_WRITE_REG(hw, IXGBE_VFTA(regindex), bits); 1044 1045 return IXGBE_SUCCESS; 1046 } 1047 1048 /** 1049 * ixgbe_clear_vfta_82598 - Clear VLAN filter table 1050 * @hw: pointer to hardware structure 1051 * 1052 * Clears the VLAN filer table, and the VMDq index associated with the filter 1053 **/ 1054 static s32 ixgbe_clear_vfta_82598(struct ixgbe_hw *hw) 1055 { 1056 u32 offset; 1057 u32 vlanbyte; 1058 1059 DEBUGFUNC("ixgbe_clear_vfta_82598"); 1060 1061 for (offset = 0; offset < hw->mac.vft_size; offset++) 1062 IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0); 1063 1064 for (vlanbyte = 0; vlanbyte < 4; vlanbyte++) 1065 for (offset = 0; offset < hw->mac.vft_size; offset++) 1066 IXGBE_WRITE_REG(hw, IXGBE_VFTAVIND(vlanbyte, offset), 1067 0); 1068 1069 return IXGBE_SUCCESS; 1070 } 1071 1072 /** 1073 * ixgbe_read_analog_reg8_82598 - Reads 8 bit Atlas analog register 1074 * @hw: pointer to hardware structure 1075 * @reg: analog register to read 1076 * @val: read value 1077 * 1078 * Performs read operation to Atlas analog register specified. 1079 **/ 1080 s32 ixgbe_read_analog_reg8_82598(struct ixgbe_hw *hw, u32 reg, u8 *val) 1081 { 1082 u32 atlas_ctl; 1083 1084 DEBUGFUNC("ixgbe_read_analog_reg8_82598"); 1085 1086 IXGBE_WRITE_REG(hw, IXGBE_ATLASCTL, 1087 IXGBE_ATLASCTL_WRITE_CMD | (reg << 8)); 1088 IXGBE_WRITE_FLUSH(hw); 1089 usec_delay(10); 1090 atlas_ctl = IXGBE_READ_REG(hw, IXGBE_ATLASCTL); 1091 *val = (u8)atlas_ctl; 1092 1093 return IXGBE_SUCCESS; 1094 } 1095 1096 /** 1097 * ixgbe_write_analog_reg8_82598 - Writes 8 bit Atlas analog register 1098 * @hw: pointer to hardware structure 1099 * @reg: atlas register to write 1100 * @val: value to write 1101 * 1102 * Performs write operation to Atlas analog register specified. 1103 **/ 1104 s32 ixgbe_write_analog_reg8_82598(struct ixgbe_hw *hw, u32 reg, u8 val) 1105 { 1106 u32 atlas_ctl; 1107 1108 DEBUGFUNC("ixgbe_write_analog_reg8_82598"); 1109 1110 atlas_ctl = (reg << 8) | val; 1111 IXGBE_WRITE_REG(hw, IXGBE_ATLASCTL, atlas_ctl); 1112 IXGBE_WRITE_FLUSH(hw); 1113 usec_delay(10); 1114 1115 return IXGBE_SUCCESS; 1116 } 1117 1118 /** 1119 * ixgbe_read_i2c_phy_82598 - Reads 8 bit word over I2C interface. 1120 * @hw: pointer to hardware structure 1121 * @dev_addr: address to read from 1122 * @byte_offset: byte offset to read from dev_addr 1123 * @eeprom_data: value read 1124 * 1125 * Performs 8 byte read operation to SFP module's EEPROM over I2C interface. 1126 **/ 1127 static s32 ixgbe_read_i2c_phy_82598(struct ixgbe_hw *hw, u8 dev_addr, 1128 u8 byte_offset, u8 *eeprom_data) 1129 { 1130 s32 status = IXGBE_SUCCESS; 1131 u16 sfp_addr = 0; 1132 u16 sfp_data = 0; 1133 u16 sfp_stat = 0; 1134 u16 gssr; 1135 u32 i; 1136 1137 DEBUGFUNC("ixgbe_read_i2c_phy_82598"); 1138 1139 if (IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1) 1140 gssr = IXGBE_GSSR_PHY1_SM; 1141 else 1142 gssr = IXGBE_GSSR_PHY0_SM; 1143 1144 if (hw->mac.ops.acquire_swfw_sync(hw, gssr) != IXGBE_SUCCESS) 1145 return IXGBE_ERR_SWFW_SYNC; 1146 1147 if (hw->phy.type == ixgbe_phy_nl) { 1148 /* 1149 * NetLogic phy SDA/SCL registers are at addresses 0xC30A to 1150 * 0xC30D. These registers are used to talk to the SFP+ 1151 * module's EEPROM through the SDA/SCL (I2C) interface. 1152 */ 1153 sfp_addr = (dev_addr << 8) + byte_offset; 1154 sfp_addr = (sfp_addr | IXGBE_I2C_EEPROM_READ_MASK); 1155 hw->phy.ops.write_reg_mdi(hw, 1156 IXGBE_MDIO_PMA_PMD_SDA_SCL_ADDR, 1157 IXGBE_MDIO_PMA_PMD_DEV_TYPE, 1158 sfp_addr); 1159 1160 /* Poll status */ 1161 for (i = 0; i < 100; i++) { 1162 hw->phy.ops.read_reg_mdi(hw, 1163 IXGBE_MDIO_PMA_PMD_SDA_SCL_STAT, 1164 IXGBE_MDIO_PMA_PMD_DEV_TYPE, 1165 &sfp_stat); 1166 sfp_stat = sfp_stat & IXGBE_I2C_EEPROM_STATUS_MASK; 1167 if (sfp_stat != IXGBE_I2C_EEPROM_STATUS_IN_PROGRESS) 1168 break; 1169 msec_delay(10); 1170 } 1171 1172 if (sfp_stat != IXGBE_I2C_EEPROM_STATUS_PASS) { 1173 DEBUGOUT("EEPROM read did not pass.\n"); 1174 status = IXGBE_ERR_SFP_NOT_PRESENT; 1175 goto out; 1176 } 1177 1178 /* Read data */ 1179 hw->phy.ops.read_reg_mdi(hw, IXGBE_MDIO_PMA_PMD_SDA_SCL_DATA, 1180 IXGBE_MDIO_PMA_PMD_DEV_TYPE, &sfp_data); 1181 1182 *eeprom_data = (u8)(sfp_data >> 8); 1183 } else { 1184 status = IXGBE_ERR_PHY; 1185 } 1186 1187 out: 1188 hw->mac.ops.release_swfw_sync(hw, gssr); 1189 return status; 1190 } 1191 1192 /** 1193 * ixgbe_read_i2c_eeprom_82598 - Reads 8 bit word over I2C interface. 1194 * @hw: pointer to hardware structure 1195 * @byte_offset: EEPROM byte offset to read 1196 * @eeprom_data: value read 1197 * 1198 * Performs 8 byte read operation to SFP module's EEPROM over I2C interface. 1199 **/ 1200 s32 ixgbe_read_i2c_eeprom_82598(struct ixgbe_hw *hw, u8 byte_offset, 1201 u8 *eeprom_data) 1202 { 1203 return ixgbe_read_i2c_phy_82598(hw, IXGBE_I2C_EEPROM_DEV_ADDR, 1204 byte_offset, eeprom_data); 1205 } 1206 1207 /** 1208 * ixgbe_read_i2c_sff8472_82598 - Reads 8 bit word over I2C interface. 1209 * @hw: pointer to hardware structure 1210 * @byte_offset: byte offset at address 0xA2 1211 * @sff8472_data: value read 1212 * 1213 * Performs 8 byte read operation to SFP module's SFF-8472 data over I2C 1214 **/ 1215 static s32 ixgbe_read_i2c_sff8472_82598(struct ixgbe_hw *hw, u8 byte_offset, 1216 u8 *sff8472_data) 1217 { 1218 return ixgbe_read_i2c_phy_82598(hw, IXGBE_I2C_EEPROM_DEV_ADDR2, 1219 byte_offset, sff8472_data); 1220 } 1221 1222 /** 1223 * ixgbe_get_supported_physical_layer_82598 - Returns physical layer type 1224 * @hw: pointer to hardware structure 1225 * 1226 * Determines physical layer capabilities of the current configuration. 1227 **/ 1228 u64 ixgbe_get_supported_physical_layer_82598(struct ixgbe_hw *hw) 1229 { 1230 u64 physical_layer = IXGBE_PHYSICAL_LAYER_UNKNOWN; 1231 u32 autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC); 1232 u32 pma_pmd_10g = autoc & IXGBE_AUTOC_10G_PMA_PMD_MASK; 1233 u32 pma_pmd_1g = autoc & IXGBE_AUTOC_1G_PMA_PMD_MASK; 1234 u16 ext_ability = 0; 1235 1236 DEBUGFUNC("ixgbe_get_supported_physical_layer_82598"); 1237 1238 hw->phy.ops.identify(hw); 1239 1240 /* Copper PHY must be checked before AUTOC LMS to determine correct 1241 * physical layer because 10GBase-T PHYs use LMS = KX4/KX */ 1242 switch (hw->phy.type) { 1243 case ixgbe_phy_tn: 1244 case ixgbe_phy_cu_unknown: 1245 hw->phy.ops.read_reg(hw, IXGBE_MDIO_PHY_EXT_ABILITY, 1246 IXGBE_MDIO_PMA_PMD_DEV_TYPE, &ext_ability); 1247 if (ext_ability & IXGBE_MDIO_PHY_10GBASET_ABILITY) 1248 physical_layer |= IXGBE_PHYSICAL_LAYER_10GBASE_T; 1249 if (ext_ability & IXGBE_MDIO_PHY_1000BASET_ABILITY) 1250 physical_layer |= IXGBE_PHYSICAL_LAYER_1000BASE_T; 1251 if (ext_ability & IXGBE_MDIO_PHY_100BASETX_ABILITY) 1252 physical_layer |= IXGBE_PHYSICAL_LAYER_100BASE_TX; 1253 goto out; 1254 default: 1255 break; 1256 } 1257 1258 switch (autoc & IXGBE_AUTOC_LMS_MASK) { 1259 case IXGBE_AUTOC_LMS_1G_AN: 1260 case IXGBE_AUTOC_LMS_1G_LINK_NO_AN: 1261 if (pma_pmd_1g == IXGBE_AUTOC_1G_KX) 1262 physical_layer = IXGBE_PHYSICAL_LAYER_1000BASE_KX; 1263 else 1264 physical_layer = IXGBE_PHYSICAL_LAYER_1000BASE_BX; 1265 break; 1266 case IXGBE_AUTOC_LMS_10G_LINK_NO_AN: 1267 if (pma_pmd_10g == IXGBE_AUTOC_10G_CX4) 1268 physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_CX4; 1269 else if (pma_pmd_10g == IXGBE_AUTOC_10G_KX4) 1270 physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_KX4; 1271 else /* XAUI */ 1272 physical_layer = IXGBE_PHYSICAL_LAYER_UNKNOWN; 1273 break; 1274 case IXGBE_AUTOC_LMS_KX4_AN: 1275 case IXGBE_AUTOC_LMS_KX4_AN_1G_AN: 1276 if (autoc & IXGBE_AUTOC_KX_SUPP) 1277 physical_layer |= IXGBE_PHYSICAL_LAYER_1000BASE_KX; 1278 if (autoc & IXGBE_AUTOC_KX4_SUPP) 1279 physical_layer |= IXGBE_PHYSICAL_LAYER_10GBASE_KX4; 1280 break; 1281 default: 1282 break; 1283 } 1284 1285 if (hw->phy.type == ixgbe_phy_nl) { 1286 hw->phy.ops.identify_sfp(hw); 1287 1288 switch (hw->phy.sfp_type) { 1289 case ixgbe_sfp_type_da_cu: 1290 physical_layer = IXGBE_PHYSICAL_LAYER_SFP_PLUS_CU; 1291 break; 1292 case ixgbe_sfp_type_sr: 1293 physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_SR; 1294 break; 1295 case ixgbe_sfp_type_lr: 1296 physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_LR; 1297 break; 1298 default: 1299 physical_layer = IXGBE_PHYSICAL_LAYER_UNKNOWN; 1300 break; 1301 } 1302 } 1303 1304 switch (hw->device_id) { 1305 case IXGBE_DEV_ID_82598_DA_DUAL_PORT: 1306 physical_layer = IXGBE_PHYSICAL_LAYER_SFP_PLUS_CU; 1307 break; 1308 case IXGBE_DEV_ID_82598AF_DUAL_PORT: 1309 case IXGBE_DEV_ID_82598AF_SINGLE_PORT: 1310 case IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM: 1311 physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_SR; 1312 break; 1313 case IXGBE_DEV_ID_82598EB_XF_LR: 1314 physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_LR; 1315 break; 1316 default: 1317 break; 1318 } 1319 1320 out: 1321 return physical_layer; 1322 } 1323 1324 /** 1325 * ixgbe_set_lan_id_multi_port_pcie_82598 - Set LAN id for PCIe multiple 1326 * port devices. 1327 * @hw: pointer to the HW structure 1328 * 1329 * Calls common function and corrects issue with some single port devices 1330 * that enable LAN1 but not LAN0. 1331 **/ 1332 void ixgbe_set_lan_id_multi_port_pcie_82598(struct ixgbe_hw *hw) 1333 { 1334 struct ixgbe_bus_info *bus = &hw->bus; 1335 u16 pci_gen = 0; 1336 u16 pci_ctrl2 = 0; 1337 1338 DEBUGFUNC("ixgbe_set_lan_id_multi_port_pcie_82598"); 1339 1340 ixgbe_set_lan_id_multi_port_pcie(hw); 1341 1342 /* check if LAN0 is disabled */ 1343 hw->eeprom.ops.read(hw, IXGBE_PCIE_GENERAL_PTR, &pci_gen); 1344 if ((pci_gen != 0) && (pci_gen != 0xFFFF)) { 1345 1346 hw->eeprom.ops.read(hw, pci_gen + IXGBE_PCIE_CTRL2, &pci_ctrl2); 1347 1348 /* if LAN0 is completely disabled force function to 0 */ 1349 if ((pci_ctrl2 & IXGBE_PCIE_CTRL2_LAN_DISABLE) && 1350 !(pci_ctrl2 & IXGBE_PCIE_CTRL2_DISABLE_SELECT) && 1351 !(pci_ctrl2 & IXGBE_PCIE_CTRL2_DUMMY_ENABLE)) { 1352 1353 bus->func = 0; 1354 } 1355 } 1356 } 1357 1358 /** 1359 * ixgbe_enable_relaxed_ordering_82598 - enable relaxed ordering 1360 * @hw: pointer to hardware structure 1361 * 1362 **/ 1363 void ixgbe_enable_relaxed_ordering_82598(struct ixgbe_hw *hw) 1364 { 1365 u32 regval; 1366 u32 i; 1367 1368 DEBUGFUNC("ixgbe_enable_relaxed_ordering_82598"); 1369 1370 /* Enable relaxed ordering */ 1371 for (i = 0; ((i < hw->mac.max_tx_queues) && 1372 (i < IXGBE_DCA_MAX_QUEUES_82598)); i++) { 1373 regval = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(i)); 1374 regval |= IXGBE_DCA_TXCTRL_DESC_WRO_EN; 1375 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(i), regval); 1376 } 1377 1378 for (i = 0; ((i < hw->mac.max_rx_queues) && 1379 (i < IXGBE_DCA_MAX_QUEUES_82598)); i++) { 1380 regval = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i)); 1381 regval |= IXGBE_DCA_RXCTRL_DATA_WRO_EN | 1382 IXGBE_DCA_RXCTRL_HEAD_WRO_EN; 1383 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(i), regval); 1384 } 1385 1386 } 1387 1388 /** 1389 * ixgbe_set_rxpba_82598 - Initialize RX packet buffer 1390 * @hw: pointer to hardware structure 1391 * @num_pb: number of packet buffers to allocate 1392 * @headroom: reserve n KB of headroom 1393 * @strategy: packet buffer allocation strategy 1394 **/ 1395 static void ixgbe_set_rxpba_82598(struct ixgbe_hw *hw, int num_pb, 1396 u32 headroom, int strategy) 1397 { 1398 u32 rxpktsize = IXGBE_RXPBSIZE_64KB; 1399 u8 i = 0; 1400 UNREFERENCED_1PARAMETER(headroom); 1401 1402 if (!num_pb) 1403 return; 1404 1405 /* Setup Rx packet buffer sizes */ 1406 switch (strategy) { 1407 case PBA_STRATEGY_WEIGHTED: 1408 /* Setup the first four at 80KB */ 1409 rxpktsize = IXGBE_RXPBSIZE_80KB; 1410 for (; i < 4; i++) 1411 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize); 1412 /* Setup the last four at 48KB...don't re-init i */ 1413 rxpktsize = IXGBE_RXPBSIZE_48KB; 1414 /* Fall Through */ 1415 case PBA_STRATEGY_EQUAL: 1416 default: 1417 /* Divide the remaining Rx packet buffer evenly among the TCs */ 1418 for (; i < IXGBE_MAX_PACKET_BUFFERS; i++) 1419 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize); 1420 break; 1421 } 1422 1423 /* Setup Tx packet buffer sizes */ 1424 for (i = 0; i < IXGBE_MAX_PACKET_BUFFERS; i++) 1425 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), IXGBE_TXPBSIZE_40KB); 1426 } 1427 1428 /** 1429 * ixgbe_enable_rx_dma_82598 - Enable the Rx DMA unit 1430 * @hw: pointer to hardware structure 1431 * @regval: register value to write to RXCTRL 1432 * 1433 * Enables the Rx DMA unit 1434 **/ 1435 s32 ixgbe_enable_rx_dma_82598(struct ixgbe_hw *hw, u32 regval) 1436 { 1437 DEBUGFUNC("ixgbe_enable_rx_dma_82598"); 1438 1439 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, regval); 1440 1441 return IXGBE_SUCCESS; 1442 } 1443