1 /******************************************************************************* 2 3 Intel 10 Gigabit PCI Express Linux driver 4 Copyright(c) 1999 - 2013 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 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 25 26 *******************************************************************************/ 27 28 #include <linux/pci.h> 29 #include <linux/delay.h> 30 #include <linux/sched.h> 31 #include <linux/netdevice.h> 32 33 #include "ixgbe.h" 34 #include "ixgbe_common.h" 35 #include "ixgbe_phy.h" 36 37 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw); 38 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw); 39 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw); 40 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw); 41 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw); 42 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data, 43 u16 count); 44 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count); 45 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec); 46 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec); 47 static void ixgbe_release_eeprom(struct ixgbe_hw *hw); 48 49 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr); 50 static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg); 51 static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset, 52 u16 words, u16 *data); 53 static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset, 54 u16 words, u16 *data); 55 static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw, 56 u16 offset); 57 static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw); 58 59 /** 60 * ixgbe_device_supports_autoneg_fc - Check if phy supports autoneg flow 61 * control 62 * @hw: pointer to hardware structure 63 * 64 * There are several phys that do not support autoneg flow control. This 65 * function check the device id to see if the associated phy supports 66 * autoneg flow control. 67 **/ 68 s32 ixgbe_device_supports_autoneg_fc(struct ixgbe_hw *hw) 69 { 70 71 switch (hw->device_id) { 72 case IXGBE_DEV_ID_X540T: 73 case IXGBE_DEV_ID_X540T1: 74 case IXGBE_DEV_ID_82599_T3_LOM: 75 return 0; 76 default: 77 return IXGBE_ERR_FC_NOT_SUPPORTED; 78 } 79 } 80 81 /** 82 * ixgbe_setup_fc - Set up flow control 83 * @hw: pointer to hardware structure 84 * 85 * Called at init time to set up flow control. 86 **/ 87 static s32 ixgbe_setup_fc(struct ixgbe_hw *hw) 88 { 89 s32 ret_val = 0; 90 u32 reg = 0, reg_bp = 0; 91 u16 reg_cu = 0; 92 bool got_lock = false; 93 94 /* 95 * Validate the requested mode. Strict IEEE mode does not allow 96 * ixgbe_fc_rx_pause because it will cause us to fail at UNH. 97 */ 98 if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) { 99 hw_dbg(hw, "ixgbe_fc_rx_pause not valid in strict IEEE mode\n"); 100 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS; 101 goto out; 102 } 103 104 /* 105 * 10gig parts do not have a word in the EEPROM to determine the 106 * default flow control setting, so we explicitly set it to full. 107 */ 108 if (hw->fc.requested_mode == ixgbe_fc_default) 109 hw->fc.requested_mode = ixgbe_fc_full; 110 111 /* 112 * Set up the 1G and 10G flow control advertisement registers so the 113 * HW will be able to do fc autoneg once the cable is plugged in. If 114 * we link at 10G, the 1G advertisement is harmless and vice versa. 115 */ 116 switch (hw->phy.media_type) { 117 case ixgbe_media_type_fiber: 118 case ixgbe_media_type_backplane: 119 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA); 120 reg_bp = IXGBE_READ_REG(hw, IXGBE_AUTOC); 121 break; 122 case ixgbe_media_type_copper: 123 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE, 124 MDIO_MMD_AN, ®_cu); 125 break; 126 default: 127 break; 128 } 129 130 /* 131 * The possible values of fc.requested_mode are: 132 * 0: Flow control is completely disabled 133 * 1: Rx flow control is enabled (we can receive pause frames, 134 * but not send pause frames). 135 * 2: Tx flow control is enabled (we can send pause frames but 136 * we do not support receiving pause frames). 137 * 3: Both Rx and Tx flow control (symmetric) are enabled. 138 * other: Invalid. 139 */ 140 switch (hw->fc.requested_mode) { 141 case ixgbe_fc_none: 142 /* Flow control completely disabled by software override. */ 143 reg &= ~(IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE); 144 if (hw->phy.media_type == ixgbe_media_type_backplane) 145 reg_bp &= ~(IXGBE_AUTOC_SYM_PAUSE | 146 IXGBE_AUTOC_ASM_PAUSE); 147 else if (hw->phy.media_type == ixgbe_media_type_copper) 148 reg_cu &= ~(IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE); 149 break; 150 case ixgbe_fc_tx_pause: 151 /* 152 * Tx Flow control is enabled, and Rx Flow control is 153 * disabled by software override. 154 */ 155 reg |= IXGBE_PCS1GANA_ASM_PAUSE; 156 reg &= ~IXGBE_PCS1GANA_SYM_PAUSE; 157 if (hw->phy.media_type == ixgbe_media_type_backplane) { 158 reg_bp |= IXGBE_AUTOC_ASM_PAUSE; 159 reg_bp &= ~IXGBE_AUTOC_SYM_PAUSE; 160 } else if (hw->phy.media_type == ixgbe_media_type_copper) { 161 reg_cu |= IXGBE_TAF_ASM_PAUSE; 162 reg_cu &= ~IXGBE_TAF_SYM_PAUSE; 163 } 164 break; 165 case ixgbe_fc_rx_pause: 166 /* 167 * Rx Flow control is enabled and Tx Flow control is 168 * disabled by software override. Since there really 169 * isn't a way to advertise that we are capable of RX 170 * Pause ONLY, we will advertise that we support both 171 * symmetric and asymmetric Rx PAUSE, as such we fall 172 * through to the fc_full statement. Later, we will 173 * disable the adapter's ability to send PAUSE frames. 174 */ 175 case ixgbe_fc_full: 176 /* Flow control (both Rx and Tx) is enabled by SW override. */ 177 reg |= IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE; 178 if (hw->phy.media_type == ixgbe_media_type_backplane) 179 reg_bp |= IXGBE_AUTOC_SYM_PAUSE | 180 IXGBE_AUTOC_ASM_PAUSE; 181 else if (hw->phy.media_type == ixgbe_media_type_copper) 182 reg_cu |= IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE; 183 break; 184 default: 185 hw_dbg(hw, "Flow control param set incorrectly\n"); 186 ret_val = IXGBE_ERR_CONFIG; 187 goto out; 188 break; 189 } 190 191 if (hw->mac.type != ixgbe_mac_X540) { 192 /* 193 * Enable auto-negotiation between the MAC & PHY; 194 * the MAC will advertise clause 37 flow control. 195 */ 196 IXGBE_WRITE_REG(hw, IXGBE_PCS1GANA, reg); 197 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GLCTL); 198 199 /* Disable AN timeout */ 200 if (hw->fc.strict_ieee) 201 reg &= ~IXGBE_PCS1GLCTL_AN_1G_TIMEOUT_EN; 202 203 IXGBE_WRITE_REG(hw, IXGBE_PCS1GLCTL, reg); 204 hw_dbg(hw, "Set up FC; PCS1GLCTL = 0x%08X\n", reg); 205 } 206 207 /* 208 * AUTOC restart handles negotiation of 1G and 10G on backplane 209 * and copper. There is no need to set the PCS1GCTL register. 210 * 211 */ 212 if (hw->phy.media_type == ixgbe_media_type_backplane) { 213 /* Need the SW/FW semaphore around AUTOC writes if 82599 and 214 * LESM is on, likewise reset_pipeline requries the lock as 215 * it also writes AUTOC. 216 */ 217 if ((hw->mac.type == ixgbe_mac_82599EB) && 218 ixgbe_verify_lesm_fw_enabled_82599(hw)) { 219 ret_val = hw->mac.ops.acquire_swfw_sync(hw, 220 IXGBE_GSSR_MAC_CSR_SM); 221 if (ret_val) 222 goto out; 223 224 got_lock = true; 225 } 226 227 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, reg_bp); 228 229 if (hw->mac.type == ixgbe_mac_82599EB) 230 ixgbe_reset_pipeline_82599(hw); 231 232 if (got_lock) 233 hw->mac.ops.release_swfw_sync(hw, 234 IXGBE_GSSR_MAC_CSR_SM); 235 236 } else if ((hw->phy.media_type == ixgbe_media_type_copper) && 237 (ixgbe_device_supports_autoneg_fc(hw) == 0)) { 238 hw->phy.ops.write_reg(hw, MDIO_AN_ADVERTISE, 239 MDIO_MMD_AN, reg_cu); 240 } 241 242 hw_dbg(hw, "Set up FC; IXGBE_AUTOC = 0x%08X\n", reg); 243 out: 244 return ret_val; 245 } 246 247 /** 248 * ixgbe_start_hw_generic - Prepare hardware for Tx/Rx 249 * @hw: pointer to hardware structure 250 * 251 * Starts the hardware by filling the bus info structure and media type, clears 252 * all on chip counters, initializes receive address registers, multicast 253 * table, VLAN filter table, calls routine to set up link and flow control 254 * settings, and leaves transmit and receive units disabled and uninitialized 255 **/ 256 s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw) 257 { 258 u32 ctrl_ext; 259 260 /* Set the media type */ 261 hw->phy.media_type = hw->mac.ops.get_media_type(hw); 262 263 /* Identify the PHY */ 264 hw->phy.ops.identify(hw); 265 266 /* Clear the VLAN filter table */ 267 hw->mac.ops.clear_vfta(hw); 268 269 /* Clear statistics registers */ 270 hw->mac.ops.clear_hw_cntrs(hw); 271 272 /* Set No Snoop Disable */ 273 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT); 274 ctrl_ext |= IXGBE_CTRL_EXT_NS_DIS; 275 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext); 276 IXGBE_WRITE_FLUSH(hw); 277 278 /* Setup flow control */ 279 ixgbe_setup_fc(hw); 280 281 /* Clear adapter stopped flag */ 282 hw->adapter_stopped = false; 283 284 return 0; 285 } 286 287 /** 288 * ixgbe_start_hw_gen2 - Init sequence for common device family 289 * @hw: pointer to hw structure 290 * 291 * Performs the init sequence common to the second generation 292 * of 10 GbE devices. 293 * Devices in the second generation: 294 * 82599 295 * X540 296 **/ 297 s32 ixgbe_start_hw_gen2(struct ixgbe_hw *hw) 298 { 299 u32 i; 300 u32 regval; 301 302 /* Clear the rate limiters */ 303 for (i = 0; i < hw->mac.max_tx_queues; i++) { 304 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, i); 305 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, 0); 306 } 307 IXGBE_WRITE_FLUSH(hw); 308 309 /* Disable relaxed ordering */ 310 for (i = 0; i < hw->mac.max_tx_queues; i++) { 311 regval = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(i)); 312 regval &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN; 313 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(i), regval); 314 } 315 316 for (i = 0; i < hw->mac.max_rx_queues; i++) { 317 regval = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i)); 318 regval &= ~(IXGBE_DCA_RXCTRL_DATA_WRO_EN | 319 IXGBE_DCA_RXCTRL_HEAD_WRO_EN); 320 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(i), regval); 321 } 322 323 return 0; 324 } 325 326 /** 327 * ixgbe_init_hw_generic - Generic hardware initialization 328 * @hw: pointer to hardware structure 329 * 330 * Initialize the hardware by resetting the hardware, filling the bus info 331 * structure and media type, clears all on chip counters, initializes receive 332 * address registers, multicast table, VLAN filter table, calls routine to set 333 * up link and flow control settings, and leaves transmit and receive units 334 * disabled and uninitialized 335 **/ 336 s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw) 337 { 338 s32 status; 339 340 /* Reset the hardware */ 341 status = hw->mac.ops.reset_hw(hw); 342 343 if (status == 0) { 344 /* Start the HW */ 345 status = hw->mac.ops.start_hw(hw); 346 } 347 348 return status; 349 } 350 351 /** 352 * ixgbe_clear_hw_cntrs_generic - Generic clear hardware counters 353 * @hw: pointer to hardware structure 354 * 355 * Clears all hardware statistics counters by reading them from the hardware 356 * Statistics counters are clear on read. 357 **/ 358 s32 ixgbe_clear_hw_cntrs_generic(struct ixgbe_hw *hw) 359 { 360 u16 i = 0; 361 362 IXGBE_READ_REG(hw, IXGBE_CRCERRS); 363 IXGBE_READ_REG(hw, IXGBE_ILLERRC); 364 IXGBE_READ_REG(hw, IXGBE_ERRBC); 365 IXGBE_READ_REG(hw, IXGBE_MSPDC); 366 for (i = 0; i < 8; i++) 367 IXGBE_READ_REG(hw, IXGBE_MPC(i)); 368 369 IXGBE_READ_REG(hw, IXGBE_MLFC); 370 IXGBE_READ_REG(hw, IXGBE_MRFC); 371 IXGBE_READ_REG(hw, IXGBE_RLEC); 372 IXGBE_READ_REG(hw, IXGBE_LXONTXC); 373 IXGBE_READ_REG(hw, IXGBE_LXOFFTXC); 374 if (hw->mac.type >= ixgbe_mac_82599EB) { 375 IXGBE_READ_REG(hw, IXGBE_LXONRXCNT); 376 IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT); 377 } else { 378 IXGBE_READ_REG(hw, IXGBE_LXONRXC); 379 IXGBE_READ_REG(hw, IXGBE_LXOFFRXC); 380 } 381 382 for (i = 0; i < 8; i++) { 383 IXGBE_READ_REG(hw, IXGBE_PXONTXC(i)); 384 IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i)); 385 if (hw->mac.type >= ixgbe_mac_82599EB) { 386 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i)); 387 IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i)); 388 } else { 389 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i)); 390 IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i)); 391 } 392 } 393 if (hw->mac.type >= ixgbe_mac_82599EB) 394 for (i = 0; i < 8; i++) 395 IXGBE_READ_REG(hw, IXGBE_PXON2OFFCNT(i)); 396 IXGBE_READ_REG(hw, IXGBE_PRC64); 397 IXGBE_READ_REG(hw, IXGBE_PRC127); 398 IXGBE_READ_REG(hw, IXGBE_PRC255); 399 IXGBE_READ_REG(hw, IXGBE_PRC511); 400 IXGBE_READ_REG(hw, IXGBE_PRC1023); 401 IXGBE_READ_REG(hw, IXGBE_PRC1522); 402 IXGBE_READ_REG(hw, IXGBE_GPRC); 403 IXGBE_READ_REG(hw, IXGBE_BPRC); 404 IXGBE_READ_REG(hw, IXGBE_MPRC); 405 IXGBE_READ_REG(hw, IXGBE_GPTC); 406 IXGBE_READ_REG(hw, IXGBE_GORCL); 407 IXGBE_READ_REG(hw, IXGBE_GORCH); 408 IXGBE_READ_REG(hw, IXGBE_GOTCL); 409 IXGBE_READ_REG(hw, IXGBE_GOTCH); 410 if (hw->mac.type == ixgbe_mac_82598EB) 411 for (i = 0; i < 8; i++) 412 IXGBE_READ_REG(hw, IXGBE_RNBC(i)); 413 IXGBE_READ_REG(hw, IXGBE_RUC); 414 IXGBE_READ_REG(hw, IXGBE_RFC); 415 IXGBE_READ_REG(hw, IXGBE_ROC); 416 IXGBE_READ_REG(hw, IXGBE_RJC); 417 IXGBE_READ_REG(hw, IXGBE_MNGPRC); 418 IXGBE_READ_REG(hw, IXGBE_MNGPDC); 419 IXGBE_READ_REG(hw, IXGBE_MNGPTC); 420 IXGBE_READ_REG(hw, IXGBE_TORL); 421 IXGBE_READ_REG(hw, IXGBE_TORH); 422 IXGBE_READ_REG(hw, IXGBE_TPR); 423 IXGBE_READ_REG(hw, IXGBE_TPT); 424 IXGBE_READ_REG(hw, IXGBE_PTC64); 425 IXGBE_READ_REG(hw, IXGBE_PTC127); 426 IXGBE_READ_REG(hw, IXGBE_PTC255); 427 IXGBE_READ_REG(hw, IXGBE_PTC511); 428 IXGBE_READ_REG(hw, IXGBE_PTC1023); 429 IXGBE_READ_REG(hw, IXGBE_PTC1522); 430 IXGBE_READ_REG(hw, IXGBE_MPTC); 431 IXGBE_READ_REG(hw, IXGBE_BPTC); 432 for (i = 0; i < 16; i++) { 433 IXGBE_READ_REG(hw, IXGBE_QPRC(i)); 434 IXGBE_READ_REG(hw, IXGBE_QPTC(i)); 435 if (hw->mac.type >= ixgbe_mac_82599EB) { 436 IXGBE_READ_REG(hw, IXGBE_QBRC_L(i)); 437 IXGBE_READ_REG(hw, IXGBE_QBRC_H(i)); 438 IXGBE_READ_REG(hw, IXGBE_QBTC_L(i)); 439 IXGBE_READ_REG(hw, IXGBE_QBTC_H(i)); 440 IXGBE_READ_REG(hw, IXGBE_QPRDC(i)); 441 } else { 442 IXGBE_READ_REG(hw, IXGBE_QBRC(i)); 443 IXGBE_READ_REG(hw, IXGBE_QBTC(i)); 444 } 445 } 446 447 if (hw->mac.type == ixgbe_mac_X540) { 448 if (hw->phy.id == 0) 449 hw->phy.ops.identify(hw); 450 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECL, MDIO_MMD_PCS, &i); 451 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECH, MDIO_MMD_PCS, &i); 452 hw->phy.ops.read_reg(hw, IXGBE_LDPCECL, MDIO_MMD_PCS, &i); 453 hw->phy.ops.read_reg(hw, IXGBE_LDPCECH, MDIO_MMD_PCS, &i); 454 } 455 456 return 0; 457 } 458 459 /** 460 * ixgbe_read_pba_string_generic - Reads part number string from EEPROM 461 * @hw: pointer to hardware structure 462 * @pba_num: stores the part number string from the EEPROM 463 * @pba_num_size: part number string buffer length 464 * 465 * Reads the part number string from the EEPROM. 466 **/ 467 s32 ixgbe_read_pba_string_generic(struct ixgbe_hw *hw, u8 *pba_num, 468 u32 pba_num_size) 469 { 470 s32 ret_val; 471 u16 data; 472 u16 pba_ptr; 473 u16 offset; 474 u16 length; 475 476 if (pba_num == NULL) { 477 hw_dbg(hw, "PBA string buffer was null\n"); 478 return IXGBE_ERR_INVALID_ARGUMENT; 479 } 480 481 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM0_PTR, &data); 482 if (ret_val) { 483 hw_dbg(hw, "NVM Read Error\n"); 484 return ret_val; 485 } 486 487 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM1_PTR, &pba_ptr); 488 if (ret_val) { 489 hw_dbg(hw, "NVM Read Error\n"); 490 return ret_val; 491 } 492 493 /* 494 * if data is not ptr guard the PBA must be in legacy format which 495 * means pba_ptr is actually our second data word for the PBA number 496 * and we can decode it into an ascii string 497 */ 498 if (data != IXGBE_PBANUM_PTR_GUARD) { 499 hw_dbg(hw, "NVM PBA number is not stored as string\n"); 500 501 /* we will need 11 characters to store the PBA */ 502 if (pba_num_size < 11) { 503 hw_dbg(hw, "PBA string buffer too small\n"); 504 return IXGBE_ERR_NO_SPACE; 505 } 506 507 /* extract hex string from data and pba_ptr */ 508 pba_num[0] = (data >> 12) & 0xF; 509 pba_num[1] = (data >> 8) & 0xF; 510 pba_num[2] = (data >> 4) & 0xF; 511 pba_num[3] = data & 0xF; 512 pba_num[4] = (pba_ptr >> 12) & 0xF; 513 pba_num[5] = (pba_ptr >> 8) & 0xF; 514 pba_num[6] = '-'; 515 pba_num[7] = 0; 516 pba_num[8] = (pba_ptr >> 4) & 0xF; 517 pba_num[9] = pba_ptr & 0xF; 518 519 /* put a null character on the end of our string */ 520 pba_num[10] = '\0'; 521 522 /* switch all the data but the '-' to hex char */ 523 for (offset = 0; offset < 10; offset++) { 524 if (pba_num[offset] < 0xA) 525 pba_num[offset] += '0'; 526 else if (pba_num[offset] < 0x10) 527 pba_num[offset] += 'A' - 0xA; 528 } 529 530 return 0; 531 } 532 533 ret_val = hw->eeprom.ops.read(hw, pba_ptr, &length); 534 if (ret_val) { 535 hw_dbg(hw, "NVM Read Error\n"); 536 return ret_val; 537 } 538 539 if (length == 0xFFFF || length == 0) { 540 hw_dbg(hw, "NVM PBA number section invalid length\n"); 541 return IXGBE_ERR_PBA_SECTION; 542 } 543 544 /* check if pba_num buffer is big enough */ 545 if (pba_num_size < (((u32)length * 2) - 1)) { 546 hw_dbg(hw, "PBA string buffer too small\n"); 547 return IXGBE_ERR_NO_SPACE; 548 } 549 550 /* trim pba length from start of string */ 551 pba_ptr++; 552 length--; 553 554 for (offset = 0; offset < length; offset++) { 555 ret_val = hw->eeprom.ops.read(hw, pba_ptr + offset, &data); 556 if (ret_val) { 557 hw_dbg(hw, "NVM Read Error\n"); 558 return ret_val; 559 } 560 pba_num[offset * 2] = (u8)(data >> 8); 561 pba_num[(offset * 2) + 1] = (u8)(data & 0xFF); 562 } 563 pba_num[offset * 2] = '\0'; 564 565 return 0; 566 } 567 568 /** 569 * ixgbe_get_mac_addr_generic - Generic get MAC address 570 * @hw: pointer to hardware structure 571 * @mac_addr: Adapter MAC address 572 * 573 * Reads the adapter's MAC address from first Receive Address Register (RAR0) 574 * A reset of the adapter must be performed prior to calling this function 575 * in order for the MAC address to have been loaded from the EEPROM into RAR0 576 **/ 577 s32 ixgbe_get_mac_addr_generic(struct ixgbe_hw *hw, u8 *mac_addr) 578 { 579 u32 rar_high; 580 u32 rar_low; 581 u16 i; 582 583 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(0)); 584 rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(0)); 585 586 for (i = 0; i < 4; i++) 587 mac_addr[i] = (u8)(rar_low >> (i*8)); 588 589 for (i = 0; i < 2; i++) 590 mac_addr[i+4] = (u8)(rar_high >> (i*8)); 591 592 return 0; 593 } 594 595 /** 596 * ixgbe_get_bus_info_generic - Generic set PCI bus info 597 * @hw: pointer to hardware structure 598 * 599 * Sets the PCI bus info (speed, width, type) within the ixgbe_hw structure 600 **/ 601 s32 ixgbe_get_bus_info_generic(struct ixgbe_hw *hw) 602 { 603 struct ixgbe_adapter *adapter = hw->back; 604 struct ixgbe_mac_info *mac = &hw->mac; 605 u16 link_status; 606 607 hw->bus.type = ixgbe_bus_type_pci_express; 608 609 /* Get the negotiated link width and speed from PCI config space */ 610 pci_read_config_word(adapter->pdev, IXGBE_PCI_LINK_STATUS, 611 &link_status); 612 613 switch (link_status & IXGBE_PCI_LINK_WIDTH) { 614 case IXGBE_PCI_LINK_WIDTH_1: 615 hw->bus.width = ixgbe_bus_width_pcie_x1; 616 break; 617 case IXGBE_PCI_LINK_WIDTH_2: 618 hw->bus.width = ixgbe_bus_width_pcie_x2; 619 break; 620 case IXGBE_PCI_LINK_WIDTH_4: 621 hw->bus.width = ixgbe_bus_width_pcie_x4; 622 break; 623 case IXGBE_PCI_LINK_WIDTH_8: 624 hw->bus.width = ixgbe_bus_width_pcie_x8; 625 break; 626 default: 627 hw->bus.width = ixgbe_bus_width_unknown; 628 break; 629 } 630 631 switch (link_status & IXGBE_PCI_LINK_SPEED) { 632 case IXGBE_PCI_LINK_SPEED_2500: 633 hw->bus.speed = ixgbe_bus_speed_2500; 634 break; 635 case IXGBE_PCI_LINK_SPEED_5000: 636 hw->bus.speed = ixgbe_bus_speed_5000; 637 break; 638 default: 639 hw->bus.speed = ixgbe_bus_speed_unknown; 640 break; 641 } 642 643 mac->ops.set_lan_id(hw); 644 645 return 0; 646 } 647 648 /** 649 * ixgbe_set_lan_id_multi_port_pcie - Set LAN id for PCIe multiple port devices 650 * @hw: pointer to the HW structure 651 * 652 * Determines the LAN function id by reading memory-mapped registers 653 * and swaps the port value if requested. 654 **/ 655 void ixgbe_set_lan_id_multi_port_pcie(struct ixgbe_hw *hw) 656 { 657 struct ixgbe_bus_info *bus = &hw->bus; 658 u32 reg; 659 660 reg = IXGBE_READ_REG(hw, IXGBE_STATUS); 661 bus->func = (reg & IXGBE_STATUS_LAN_ID) >> IXGBE_STATUS_LAN_ID_SHIFT; 662 bus->lan_id = bus->func; 663 664 /* check for a port swap */ 665 reg = IXGBE_READ_REG(hw, IXGBE_FACTPS); 666 if (reg & IXGBE_FACTPS_LFS) 667 bus->func ^= 0x1; 668 } 669 670 /** 671 * ixgbe_stop_adapter_generic - Generic stop Tx/Rx units 672 * @hw: pointer to hardware structure 673 * 674 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts, 675 * disables transmit and receive units. The adapter_stopped flag is used by 676 * the shared code and drivers to determine if the adapter is in a stopped 677 * state and should not touch the hardware. 678 **/ 679 s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw) 680 { 681 u32 reg_val; 682 u16 i; 683 684 /* 685 * Set the adapter_stopped flag so other driver functions stop touching 686 * the hardware 687 */ 688 hw->adapter_stopped = true; 689 690 /* Disable the receive unit */ 691 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, 0); 692 693 /* Clear interrupt mask to stop interrupts from being generated */ 694 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK); 695 696 /* Clear any pending interrupts, flush previous writes */ 697 IXGBE_READ_REG(hw, IXGBE_EICR); 698 699 /* Disable the transmit unit. Each queue must be disabled. */ 700 for (i = 0; i < hw->mac.max_tx_queues; i++) 701 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), IXGBE_TXDCTL_SWFLSH); 702 703 /* Disable the receive unit by stopping each queue */ 704 for (i = 0; i < hw->mac.max_rx_queues; i++) { 705 reg_val = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i)); 706 reg_val &= ~IXGBE_RXDCTL_ENABLE; 707 reg_val |= IXGBE_RXDCTL_SWFLSH; 708 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(i), reg_val); 709 } 710 711 /* flush all queues disables */ 712 IXGBE_WRITE_FLUSH(hw); 713 usleep_range(1000, 2000); 714 715 /* 716 * Prevent the PCI-E bus from from hanging by disabling PCI-E master 717 * access and verify no pending requests 718 */ 719 return ixgbe_disable_pcie_master(hw); 720 } 721 722 /** 723 * ixgbe_led_on_generic - Turns on the software controllable LEDs. 724 * @hw: pointer to hardware structure 725 * @index: led number to turn on 726 **/ 727 s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index) 728 { 729 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL); 730 731 /* To turn on the LED, set mode to ON. */ 732 led_reg &= ~IXGBE_LED_MODE_MASK(index); 733 led_reg |= IXGBE_LED_ON << IXGBE_LED_MODE_SHIFT(index); 734 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg); 735 IXGBE_WRITE_FLUSH(hw); 736 737 return 0; 738 } 739 740 /** 741 * ixgbe_led_off_generic - Turns off the software controllable LEDs. 742 * @hw: pointer to hardware structure 743 * @index: led number to turn off 744 **/ 745 s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index) 746 { 747 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL); 748 749 /* To turn off the LED, set mode to OFF. */ 750 led_reg &= ~IXGBE_LED_MODE_MASK(index); 751 led_reg |= IXGBE_LED_OFF << IXGBE_LED_MODE_SHIFT(index); 752 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg); 753 IXGBE_WRITE_FLUSH(hw); 754 755 return 0; 756 } 757 758 /** 759 * ixgbe_init_eeprom_params_generic - Initialize EEPROM params 760 * @hw: pointer to hardware structure 761 * 762 * Initializes the EEPROM parameters ixgbe_eeprom_info within the 763 * ixgbe_hw struct in order to set up EEPROM access. 764 **/ 765 s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw) 766 { 767 struct ixgbe_eeprom_info *eeprom = &hw->eeprom; 768 u32 eec; 769 u16 eeprom_size; 770 771 if (eeprom->type == ixgbe_eeprom_uninitialized) { 772 eeprom->type = ixgbe_eeprom_none; 773 /* Set default semaphore delay to 10ms which is a well 774 * tested value */ 775 eeprom->semaphore_delay = 10; 776 /* Clear EEPROM page size, it will be initialized as needed */ 777 eeprom->word_page_size = 0; 778 779 /* 780 * Check for EEPROM present first. 781 * If not present leave as none 782 */ 783 eec = IXGBE_READ_REG(hw, IXGBE_EEC); 784 if (eec & IXGBE_EEC_PRES) { 785 eeprom->type = ixgbe_eeprom_spi; 786 787 /* 788 * SPI EEPROM is assumed here. This code would need to 789 * change if a future EEPROM is not SPI. 790 */ 791 eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >> 792 IXGBE_EEC_SIZE_SHIFT); 793 eeprom->word_size = 1 << (eeprom_size + 794 IXGBE_EEPROM_WORD_SIZE_SHIFT); 795 } 796 797 if (eec & IXGBE_EEC_ADDR_SIZE) 798 eeprom->address_bits = 16; 799 else 800 eeprom->address_bits = 8; 801 hw_dbg(hw, "Eeprom params: type = %d, size = %d, address bits: " 802 "%d\n", eeprom->type, eeprom->word_size, 803 eeprom->address_bits); 804 } 805 806 return 0; 807 } 808 809 /** 810 * ixgbe_write_eeprom_buffer_bit_bang_generic - Write EEPROM using bit-bang 811 * @hw: pointer to hardware structure 812 * @offset: offset within the EEPROM to write 813 * @words: number of words 814 * @data: 16 bit word(s) to write to EEPROM 815 * 816 * Reads 16 bit word(s) from EEPROM through bit-bang method 817 **/ 818 s32 ixgbe_write_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset, 819 u16 words, u16 *data) 820 { 821 s32 status = 0; 822 u16 i, count; 823 824 hw->eeprom.ops.init_params(hw); 825 826 if (words == 0) { 827 status = IXGBE_ERR_INVALID_ARGUMENT; 828 goto out; 829 } 830 831 if (offset + words > hw->eeprom.word_size) { 832 status = IXGBE_ERR_EEPROM; 833 goto out; 834 } 835 836 /* 837 * The EEPROM page size cannot be queried from the chip. We do lazy 838 * initialization. It is worth to do that when we write large buffer. 839 */ 840 if ((hw->eeprom.word_page_size == 0) && 841 (words > IXGBE_EEPROM_PAGE_SIZE_MAX)) 842 ixgbe_detect_eeprom_page_size_generic(hw, offset); 843 844 /* 845 * We cannot hold synchronization semaphores for too long 846 * to avoid other entity starvation. However it is more efficient 847 * to read in bursts than synchronizing access for each word. 848 */ 849 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) { 850 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ? 851 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i); 852 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset + i, 853 count, &data[i]); 854 855 if (status != 0) 856 break; 857 } 858 859 out: 860 return status; 861 } 862 863 /** 864 * ixgbe_write_eeprom_buffer_bit_bang - Writes 16 bit word(s) to EEPROM 865 * @hw: pointer to hardware structure 866 * @offset: offset within the EEPROM to be written to 867 * @words: number of word(s) 868 * @data: 16 bit word(s) to be written to the EEPROM 869 * 870 * If ixgbe_eeprom_update_checksum is not called after this function, the 871 * EEPROM will most likely contain an invalid checksum. 872 **/ 873 static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset, 874 u16 words, u16 *data) 875 { 876 s32 status; 877 u16 word; 878 u16 page_size; 879 u16 i; 880 u8 write_opcode = IXGBE_EEPROM_WRITE_OPCODE_SPI; 881 882 /* Prepare the EEPROM for writing */ 883 status = ixgbe_acquire_eeprom(hw); 884 885 if (status == 0) { 886 if (ixgbe_ready_eeprom(hw) != 0) { 887 ixgbe_release_eeprom(hw); 888 status = IXGBE_ERR_EEPROM; 889 } 890 } 891 892 if (status == 0) { 893 for (i = 0; i < words; i++) { 894 ixgbe_standby_eeprom(hw); 895 896 /* Send the WRITE ENABLE command (8 bit opcode ) */ 897 ixgbe_shift_out_eeprom_bits(hw, 898 IXGBE_EEPROM_WREN_OPCODE_SPI, 899 IXGBE_EEPROM_OPCODE_BITS); 900 901 ixgbe_standby_eeprom(hw); 902 903 /* 904 * Some SPI eeproms use the 8th address bit embedded 905 * in the opcode 906 */ 907 if ((hw->eeprom.address_bits == 8) && 908 ((offset + i) >= 128)) 909 write_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI; 910 911 /* Send the Write command (8-bit opcode + addr) */ 912 ixgbe_shift_out_eeprom_bits(hw, write_opcode, 913 IXGBE_EEPROM_OPCODE_BITS); 914 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2), 915 hw->eeprom.address_bits); 916 917 page_size = hw->eeprom.word_page_size; 918 919 /* Send the data in burst via SPI*/ 920 do { 921 word = data[i]; 922 word = (word >> 8) | (word << 8); 923 ixgbe_shift_out_eeprom_bits(hw, word, 16); 924 925 if (page_size == 0) 926 break; 927 928 /* do not wrap around page */ 929 if (((offset + i) & (page_size - 1)) == 930 (page_size - 1)) 931 break; 932 } while (++i < words); 933 934 ixgbe_standby_eeprom(hw); 935 usleep_range(10000, 20000); 936 } 937 /* Done with writing - release the EEPROM */ 938 ixgbe_release_eeprom(hw); 939 } 940 941 return status; 942 } 943 944 /** 945 * ixgbe_write_eeprom_generic - Writes 16 bit value to EEPROM 946 * @hw: pointer to hardware structure 947 * @offset: offset within the EEPROM to be written to 948 * @data: 16 bit word to be written to the EEPROM 949 * 950 * If ixgbe_eeprom_update_checksum is not called after this function, the 951 * EEPROM will most likely contain an invalid checksum. 952 **/ 953 s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data) 954 { 955 s32 status; 956 957 hw->eeprom.ops.init_params(hw); 958 959 if (offset >= hw->eeprom.word_size) { 960 status = IXGBE_ERR_EEPROM; 961 goto out; 962 } 963 964 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset, 1, &data); 965 966 out: 967 return status; 968 } 969 970 /** 971 * ixgbe_read_eeprom_buffer_bit_bang_generic - Read EEPROM using bit-bang 972 * @hw: pointer to hardware structure 973 * @offset: offset within the EEPROM to be read 974 * @words: number of word(s) 975 * @data: read 16 bit words(s) from EEPROM 976 * 977 * Reads 16 bit word(s) from EEPROM through bit-bang method 978 **/ 979 s32 ixgbe_read_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset, 980 u16 words, u16 *data) 981 { 982 s32 status = 0; 983 u16 i, count; 984 985 hw->eeprom.ops.init_params(hw); 986 987 if (words == 0) { 988 status = IXGBE_ERR_INVALID_ARGUMENT; 989 goto out; 990 } 991 992 if (offset + words > hw->eeprom.word_size) { 993 status = IXGBE_ERR_EEPROM; 994 goto out; 995 } 996 997 /* 998 * We cannot hold synchronization semaphores for too long 999 * to avoid other entity starvation. However it is more efficient 1000 * to read in bursts than synchronizing access for each word. 1001 */ 1002 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) { 1003 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ? 1004 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i); 1005 1006 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset + i, 1007 count, &data[i]); 1008 1009 if (status != 0) 1010 break; 1011 } 1012 1013 out: 1014 return status; 1015 } 1016 1017 /** 1018 * ixgbe_read_eeprom_buffer_bit_bang - Read EEPROM using bit-bang 1019 * @hw: pointer to hardware structure 1020 * @offset: offset within the EEPROM to be read 1021 * @words: number of word(s) 1022 * @data: read 16 bit word(s) from EEPROM 1023 * 1024 * Reads 16 bit word(s) from EEPROM through bit-bang method 1025 **/ 1026 static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset, 1027 u16 words, u16 *data) 1028 { 1029 s32 status; 1030 u16 word_in; 1031 u8 read_opcode = IXGBE_EEPROM_READ_OPCODE_SPI; 1032 u16 i; 1033 1034 /* Prepare the EEPROM for reading */ 1035 status = ixgbe_acquire_eeprom(hw); 1036 1037 if (status == 0) { 1038 if (ixgbe_ready_eeprom(hw) != 0) { 1039 ixgbe_release_eeprom(hw); 1040 status = IXGBE_ERR_EEPROM; 1041 } 1042 } 1043 1044 if (status == 0) { 1045 for (i = 0; i < words; i++) { 1046 ixgbe_standby_eeprom(hw); 1047 /* 1048 * Some SPI eeproms use the 8th address bit embedded 1049 * in the opcode 1050 */ 1051 if ((hw->eeprom.address_bits == 8) && 1052 ((offset + i) >= 128)) 1053 read_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI; 1054 1055 /* Send the READ command (opcode + addr) */ 1056 ixgbe_shift_out_eeprom_bits(hw, read_opcode, 1057 IXGBE_EEPROM_OPCODE_BITS); 1058 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2), 1059 hw->eeprom.address_bits); 1060 1061 /* Read the data. */ 1062 word_in = ixgbe_shift_in_eeprom_bits(hw, 16); 1063 data[i] = (word_in >> 8) | (word_in << 8); 1064 } 1065 1066 /* End this read operation */ 1067 ixgbe_release_eeprom(hw); 1068 } 1069 1070 return status; 1071 } 1072 1073 /** 1074 * ixgbe_read_eeprom_bit_bang_generic - Read EEPROM word using bit-bang 1075 * @hw: pointer to hardware structure 1076 * @offset: offset within the EEPROM to be read 1077 * @data: read 16 bit value from EEPROM 1078 * 1079 * Reads 16 bit value from EEPROM through bit-bang method 1080 **/ 1081 s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset, 1082 u16 *data) 1083 { 1084 s32 status; 1085 1086 hw->eeprom.ops.init_params(hw); 1087 1088 if (offset >= hw->eeprom.word_size) { 1089 status = IXGBE_ERR_EEPROM; 1090 goto out; 1091 } 1092 1093 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data); 1094 1095 out: 1096 return status; 1097 } 1098 1099 /** 1100 * ixgbe_read_eerd_buffer_generic - Read EEPROM word(s) using EERD 1101 * @hw: pointer to hardware structure 1102 * @offset: offset of word in the EEPROM to read 1103 * @words: number of word(s) 1104 * @data: 16 bit word(s) from the EEPROM 1105 * 1106 * Reads a 16 bit word(s) from the EEPROM using the EERD register. 1107 **/ 1108 s32 ixgbe_read_eerd_buffer_generic(struct ixgbe_hw *hw, u16 offset, 1109 u16 words, u16 *data) 1110 { 1111 u32 eerd; 1112 s32 status = 0; 1113 u32 i; 1114 1115 hw->eeprom.ops.init_params(hw); 1116 1117 if (words == 0) { 1118 status = IXGBE_ERR_INVALID_ARGUMENT; 1119 goto out; 1120 } 1121 1122 if (offset >= hw->eeprom.word_size) { 1123 status = IXGBE_ERR_EEPROM; 1124 goto out; 1125 } 1126 1127 for (i = 0; i < words; i++) { 1128 eerd = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) + 1129 IXGBE_EEPROM_RW_REG_START; 1130 1131 IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd); 1132 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_READ); 1133 1134 if (status == 0) { 1135 data[i] = (IXGBE_READ_REG(hw, IXGBE_EERD) >> 1136 IXGBE_EEPROM_RW_REG_DATA); 1137 } else { 1138 hw_dbg(hw, "Eeprom read timed out\n"); 1139 goto out; 1140 } 1141 } 1142 out: 1143 return status; 1144 } 1145 1146 /** 1147 * ixgbe_detect_eeprom_page_size_generic - Detect EEPROM page size 1148 * @hw: pointer to hardware structure 1149 * @offset: offset within the EEPROM to be used as a scratch pad 1150 * 1151 * Discover EEPROM page size by writing marching data at given offset. 1152 * This function is called only when we are writing a new large buffer 1153 * at given offset so the data would be overwritten anyway. 1154 **/ 1155 static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw, 1156 u16 offset) 1157 { 1158 u16 data[IXGBE_EEPROM_PAGE_SIZE_MAX]; 1159 s32 status = 0; 1160 u16 i; 1161 1162 for (i = 0; i < IXGBE_EEPROM_PAGE_SIZE_MAX; i++) 1163 data[i] = i; 1164 1165 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX; 1166 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset, 1167 IXGBE_EEPROM_PAGE_SIZE_MAX, data); 1168 hw->eeprom.word_page_size = 0; 1169 if (status != 0) 1170 goto out; 1171 1172 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data); 1173 if (status != 0) 1174 goto out; 1175 1176 /* 1177 * When writing in burst more than the actual page size 1178 * EEPROM address wraps around current page. 1179 */ 1180 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX - data[0]; 1181 1182 hw_dbg(hw, "Detected EEPROM page size = %d words.", 1183 hw->eeprom.word_page_size); 1184 out: 1185 return status; 1186 } 1187 1188 /** 1189 * ixgbe_read_eerd_generic - Read EEPROM word using EERD 1190 * @hw: pointer to hardware structure 1191 * @offset: offset of word in the EEPROM to read 1192 * @data: word read from the EEPROM 1193 * 1194 * Reads a 16 bit word from the EEPROM using the EERD register. 1195 **/ 1196 s32 ixgbe_read_eerd_generic(struct ixgbe_hw *hw, u16 offset, u16 *data) 1197 { 1198 return ixgbe_read_eerd_buffer_generic(hw, offset, 1, data); 1199 } 1200 1201 /** 1202 * ixgbe_write_eewr_buffer_generic - Write EEPROM word(s) using EEWR 1203 * @hw: pointer to hardware structure 1204 * @offset: offset of word in the EEPROM to write 1205 * @words: number of words 1206 * @data: word(s) write to the EEPROM 1207 * 1208 * Write a 16 bit word(s) to the EEPROM using the EEWR register. 1209 **/ 1210 s32 ixgbe_write_eewr_buffer_generic(struct ixgbe_hw *hw, u16 offset, 1211 u16 words, u16 *data) 1212 { 1213 u32 eewr; 1214 s32 status = 0; 1215 u16 i; 1216 1217 hw->eeprom.ops.init_params(hw); 1218 1219 if (words == 0) { 1220 status = IXGBE_ERR_INVALID_ARGUMENT; 1221 goto out; 1222 } 1223 1224 if (offset >= hw->eeprom.word_size) { 1225 status = IXGBE_ERR_EEPROM; 1226 goto out; 1227 } 1228 1229 for (i = 0; i < words; i++) { 1230 eewr = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) | 1231 (data[i] << IXGBE_EEPROM_RW_REG_DATA) | 1232 IXGBE_EEPROM_RW_REG_START; 1233 1234 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE); 1235 if (status != 0) { 1236 hw_dbg(hw, "Eeprom write EEWR timed out\n"); 1237 goto out; 1238 } 1239 1240 IXGBE_WRITE_REG(hw, IXGBE_EEWR, eewr); 1241 1242 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE); 1243 if (status != 0) { 1244 hw_dbg(hw, "Eeprom write EEWR timed out\n"); 1245 goto out; 1246 } 1247 } 1248 1249 out: 1250 return status; 1251 } 1252 1253 /** 1254 * ixgbe_write_eewr_generic - Write EEPROM word using EEWR 1255 * @hw: pointer to hardware structure 1256 * @offset: offset of word in the EEPROM to write 1257 * @data: word write to the EEPROM 1258 * 1259 * Write a 16 bit word to the EEPROM using the EEWR register. 1260 **/ 1261 s32 ixgbe_write_eewr_generic(struct ixgbe_hw *hw, u16 offset, u16 data) 1262 { 1263 return ixgbe_write_eewr_buffer_generic(hw, offset, 1, &data); 1264 } 1265 1266 /** 1267 * ixgbe_poll_eerd_eewr_done - Poll EERD read or EEWR write status 1268 * @hw: pointer to hardware structure 1269 * @ee_reg: EEPROM flag for polling 1270 * 1271 * Polls the status bit (bit 1) of the EERD or EEWR to determine when the 1272 * read or write is done respectively. 1273 **/ 1274 static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg) 1275 { 1276 u32 i; 1277 u32 reg; 1278 s32 status = IXGBE_ERR_EEPROM; 1279 1280 for (i = 0; i < IXGBE_EERD_EEWR_ATTEMPTS; i++) { 1281 if (ee_reg == IXGBE_NVM_POLL_READ) 1282 reg = IXGBE_READ_REG(hw, IXGBE_EERD); 1283 else 1284 reg = IXGBE_READ_REG(hw, IXGBE_EEWR); 1285 1286 if (reg & IXGBE_EEPROM_RW_REG_DONE) { 1287 status = 0; 1288 break; 1289 } 1290 udelay(5); 1291 } 1292 return status; 1293 } 1294 1295 /** 1296 * ixgbe_acquire_eeprom - Acquire EEPROM using bit-bang 1297 * @hw: pointer to hardware structure 1298 * 1299 * Prepares EEPROM for access using bit-bang method. This function should 1300 * be called before issuing a command to the EEPROM. 1301 **/ 1302 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw) 1303 { 1304 s32 status = 0; 1305 u32 eec; 1306 u32 i; 1307 1308 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) != 0) 1309 status = IXGBE_ERR_SWFW_SYNC; 1310 1311 if (status == 0) { 1312 eec = IXGBE_READ_REG(hw, IXGBE_EEC); 1313 1314 /* Request EEPROM Access */ 1315 eec |= IXGBE_EEC_REQ; 1316 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); 1317 1318 for (i = 0; i < IXGBE_EEPROM_GRANT_ATTEMPTS; i++) { 1319 eec = IXGBE_READ_REG(hw, IXGBE_EEC); 1320 if (eec & IXGBE_EEC_GNT) 1321 break; 1322 udelay(5); 1323 } 1324 1325 /* Release if grant not acquired */ 1326 if (!(eec & IXGBE_EEC_GNT)) { 1327 eec &= ~IXGBE_EEC_REQ; 1328 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); 1329 hw_dbg(hw, "Could not acquire EEPROM grant\n"); 1330 1331 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM); 1332 status = IXGBE_ERR_EEPROM; 1333 } 1334 1335 /* Setup EEPROM for Read/Write */ 1336 if (status == 0) { 1337 /* Clear CS and SK */ 1338 eec &= ~(IXGBE_EEC_CS | IXGBE_EEC_SK); 1339 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); 1340 IXGBE_WRITE_FLUSH(hw); 1341 udelay(1); 1342 } 1343 } 1344 return status; 1345 } 1346 1347 /** 1348 * ixgbe_get_eeprom_semaphore - Get hardware semaphore 1349 * @hw: pointer to hardware structure 1350 * 1351 * Sets the hardware semaphores so EEPROM access can occur for bit-bang method 1352 **/ 1353 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw) 1354 { 1355 s32 status = IXGBE_ERR_EEPROM; 1356 u32 timeout = 2000; 1357 u32 i; 1358 u32 swsm; 1359 1360 /* Get SMBI software semaphore between device drivers first */ 1361 for (i = 0; i < timeout; i++) { 1362 /* 1363 * If the SMBI bit is 0 when we read it, then the bit will be 1364 * set and we have the semaphore 1365 */ 1366 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM); 1367 if (!(swsm & IXGBE_SWSM_SMBI)) { 1368 status = 0; 1369 break; 1370 } 1371 udelay(50); 1372 } 1373 1374 if (i == timeout) { 1375 hw_dbg(hw, "Driver can't access the Eeprom - SMBI Semaphore " 1376 "not granted.\n"); 1377 /* 1378 * this release is particularly important because our attempts 1379 * above to get the semaphore may have succeeded, and if there 1380 * was a timeout, we should unconditionally clear the semaphore 1381 * bits to free the driver to make progress 1382 */ 1383 ixgbe_release_eeprom_semaphore(hw); 1384 1385 udelay(50); 1386 /* 1387 * one last try 1388 * If the SMBI bit is 0 when we read it, then the bit will be 1389 * set and we have the semaphore 1390 */ 1391 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM); 1392 if (!(swsm & IXGBE_SWSM_SMBI)) 1393 status = 0; 1394 } 1395 1396 /* Now get the semaphore between SW/FW through the SWESMBI bit */ 1397 if (status == 0) { 1398 for (i = 0; i < timeout; i++) { 1399 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM); 1400 1401 /* Set the SW EEPROM semaphore bit to request access */ 1402 swsm |= IXGBE_SWSM_SWESMBI; 1403 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm); 1404 1405 /* 1406 * If we set the bit successfully then we got the 1407 * semaphore. 1408 */ 1409 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM); 1410 if (swsm & IXGBE_SWSM_SWESMBI) 1411 break; 1412 1413 udelay(50); 1414 } 1415 1416 /* 1417 * Release semaphores and return error if SW EEPROM semaphore 1418 * was not granted because we don't have access to the EEPROM 1419 */ 1420 if (i >= timeout) { 1421 hw_dbg(hw, "SWESMBI Software EEPROM semaphore " 1422 "not granted.\n"); 1423 ixgbe_release_eeprom_semaphore(hw); 1424 status = IXGBE_ERR_EEPROM; 1425 } 1426 } else { 1427 hw_dbg(hw, "Software semaphore SMBI between device drivers " 1428 "not granted.\n"); 1429 } 1430 1431 return status; 1432 } 1433 1434 /** 1435 * ixgbe_release_eeprom_semaphore - Release hardware semaphore 1436 * @hw: pointer to hardware structure 1437 * 1438 * This function clears hardware semaphore bits. 1439 **/ 1440 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw) 1441 { 1442 u32 swsm; 1443 1444 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM); 1445 1446 /* Release both semaphores by writing 0 to the bits SWESMBI and SMBI */ 1447 swsm &= ~(IXGBE_SWSM_SWESMBI | IXGBE_SWSM_SMBI); 1448 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm); 1449 IXGBE_WRITE_FLUSH(hw); 1450 } 1451 1452 /** 1453 * ixgbe_ready_eeprom - Polls for EEPROM ready 1454 * @hw: pointer to hardware structure 1455 **/ 1456 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw) 1457 { 1458 s32 status = 0; 1459 u16 i; 1460 u8 spi_stat_reg; 1461 1462 /* 1463 * Read "Status Register" repeatedly until the LSB is cleared. The 1464 * EEPROM will signal that the command has been completed by clearing 1465 * bit 0 of the internal status register. If it's not cleared within 1466 * 5 milliseconds, then error out. 1467 */ 1468 for (i = 0; i < IXGBE_EEPROM_MAX_RETRY_SPI; i += 5) { 1469 ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_RDSR_OPCODE_SPI, 1470 IXGBE_EEPROM_OPCODE_BITS); 1471 spi_stat_reg = (u8)ixgbe_shift_in_eeprom_bits(hw, 8); 1472 if (!(spi_stat_reg & IXGBE_EEPROM_STATUS_RDY_SPI)) 1473 break; 1474 1475 udelay(5); 1476 ixgbe_standby_eeprom(hw); 1477 } 1478 1479 /* 1480 * On some parts, SPI write time could vary from 0-20mSec on 3.3V 1481 * devices (and only 0-5mSec on 5V devices) 1482 */ 1483 if (i >= IXGBE_EEPROM_MAX_RETRY_SPI) { 1484 hw_dbg(hw, "SPI EEPROM Status error\n"); 1485 status = IXGBE_ERR_EEPROM; 1486 } 1487 1488 return status; 1489 } 1490 1491 /** 1492 * ixgbe_standby_eeprom - Returns EEPROM to a "standby" state 1493 * @hw: pointer to hardware structure 1494 **/ 1495 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw) 1496 { 1497 u32 eec; 1498 1499 eec = IXGBE_READ_REG(hw, IXGBE_EEC); 1500 1501 /* Toggle CS to flush commands */ 1502 eec |= IXGBE_EEC_CS; 1503 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); 1504 IXGBE_WRITE_FLUSH(hw); 1505 udelay(1); 1506 eec &= ~IXGBE_EEC_CS; 1507 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); 1508 IXGBE_WRITE_FLUSH(hw); 1509 udelay(1); 1510 } 1511 1512 /** 1513 * ixgbe_shift_out_eeprom_bits - Shift data bits out to the EEPROM. 1514 * @hw: pointer to hardware structure 1515 * @data: data to send to the EEPROM 1516 * @count: number of bits to shift out 1517 **/ 1518 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data, 1519 u16 count) 1520 { 1521 u32 eec; 1522 u32 mask; 1523 u32 i; 1524 1525 eec = IXGBE_READ_REG(hw, IXGBE_EEC); 1526 1527 /* 1528 * Mask is used to shift "count" bits of "data" out to the EEPROM 1529 * one bit at a time. Determine the starting bit based on count 1530 */ 1531 mask = 0x01 << (count - 1); 1532 1533 for (i = 0; i < count; i++) { 1534 /* 1535 * A "1" is shifted out to the EEPROM by setting bit "DI" to a 1536 * "1", and then raising and then lowering the clock (the SK 1537 * bit controls the clock input to the EEPROM). A "0" is 1538 * shifted out to the EEPROM by setting "DI" to "0" and then 1539 * raising and then lowering the clock. 1540 */ 1541 if (data & mask) 1542 eec |= IXGBE_EEC_DI; 1543 else 1544 eec &= ~IXGBE_EEC_DI; 1545 1546 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); 1547 IXGBE_WRITE_FLUSH(hw); 1548 1549 udelay(1); 1550 1551 ixgbe_raise_eeprom_clk(hw, &eec); 1552 ixgbe_lower_eeprom_clk(hw, &eec); 1553 1554 /* 1555 * Shift mask to signify next bit of data to shift in to the 1556 * EEPROM 1557 */ 1558 mask = mask >> 1; 1559 } 1560 1561 /* We leave the "DI" bit set to "0" when we leave this routine. */ 1562 eec &= ~IXGBE_EEC_DI; 1563 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); 1564 IXGBE_WRITE_FLUSH(hw); 1565 } 1566 1567 /** 1568 * ixgbe_shift_in_eeprom_bits - Shift data bits in from the EEPROM 1569 * @hw: pointer to hardware structure 1570 **/ 1571 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count) 1572 { 1573 u32 eec; 1574 u32 i; 1575 u16 data = 0; 1576 1577 /* 1578 * In order to read a register from the EEPROM, we need to shift 1579 * 'count' bits in from the EEPROM. Bits are "shifted in" by raising 1580 * the clock input to the EEPROM (setting the SK bit), and then reading 1581 * the value of the "DO" bit. During this "shifting in" process the 1582 * "DI" bit should always be clear. 1583 */ 1584 eec = IXGBE_READ_REG(hw, IXGBE_EEC); 1585 1586 eec &= ~(IXGBE_EEC_DO | IXGBE_EEC_DI); 1587 1588 for (i = 0; i < count; i++) { 1589 data = data << 1; 1590 ixgbe_raise_eeprom_clk(hw, &eec); 1591 1592 eec = IXGBE_READ_REG(hw, IXGBE_EEC); 1593 1594 eec &= ~(IXGBE_EEC_DI); 1595 if (eec & IXGBE_EEC_DO) 1596 data |= 1; 1597 1598 ixgbe_lower_eeprom_clk(hw, &eec); 1599 } 1600 1601 return data; 1602 } 1603 1604 /** 1605 * ixgbe_raise_eeprom_clk - Raises the EEPROM's clock input. 1606 * @hw: pointer to hardware structure 1607 * @eec: EEC register's current value 1608 **/ 1609 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec) 1610 { 1611 /* 1612 * Raise the clock input to the EEPROM 1613 * (setting the SK bit), then delay 1614 */ 1615 *eec = *eec | IXGBE_EEC_SK; 1616 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec); 1617 IXGBE_WRITE_FLUSH(hw); 1618 udelay(1); 1619 } 1620 1621 /** 1622 * ixgbe_lower_eeprom_clk - Lowers the EEPROM's clock input. 1623 * @hw: pointer to hardware structure 1624 * @eecd: EECD's current value 1625 **/ 1626 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec) 1627 { 1628 /* 1629 * Lower the clock input to the EEPROM (clearing the SK bit), then 1630 * delay 1631 */ 1632 *eec = *eec & ~IXGBE_EEC_SK; 1633 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec); 1634 IXGBE_WRITE_FLUSH(hw); 1635 udelay(1); 1636 } 1637 1638 /** 1639 * ixgbe_release_eeprom - Release EEPROM, release semaphores 1640 * @hw: pointer to hardware structure 1641 **/ 1642 static void ixgbe_release_eeprom(struct ixgbe_hw *hw) 1643 { 1644 u32 eec; 1645 1646 eec = IXGBE_READ_REG(hw, IXGBE_EEC); 1647 1648 eec |= IXGBE_EEC_CS; /* Pull CS high */ 1649 eec &= ~IXGBE_EEC_SK; /* Lower SCK */ 1650 1651 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); 1652 IXGBE_WRITE_FLUSH(hw); 1653 1654 udelay(1); 1655 1656 /* Stop requesting EEPROM access */ 1657 eec &= ~IXGBE_EEC_REQ; 1658 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec); 1659 1660 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM); 1661 1662 /* 1663 * Delay before attempt to obtain semaphore again to allow FW 1664 * access. semaphore_delay is in ms we need us for usleep_range 1665 */ 1666 usleep_range(hw->eeprom.semaphore_delay * 1000, 1667 hw->eeprom.semaphore_delay * 2000); 1668 } 1669 1670 /** 1671 * ixgbe_calc_eeprom_checksum_generic - Calculates and returns the checksum 1672 * @hw: pointer to hardware structure 1673 **/ 1674 u16 ixgbe_calc_eeprom_checksum_generic(struct ixgbe_hw *hw) 1675 { 1676 u16 i; 1677 u16 j; 1678 u16 checksum = 0; 1679 u16 length = 0; 1680 u16 pointer = 0; 1681 u16 word = 0; 1682 1683 /* Include 0x0-0x3F in the checksum */ 1684 for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) { 1685 if (hw->eeprom.ops.read(hw, i, &word) != 0) { 1686 hw_dbg(hw, "EEPROM read failed\n"); 1687 break; 1688 } 1689 checksum += word; 1690 } 1691 1692 /* Include all data from pointers except for the fw pointer */ 1693 for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) { 1694 hw->eeprom.ops.read(hw, i, &pointer); 1695 1696 /* Make sure the pointer seems valid */ 1697 if (pointer != 0xFFFF && pointer != 0) { 1698 hw->eeprom.ops.read(hw, pointer, &length); 1699 1700 if (length != 0xFFFF && length != 0) { 1701 for (j = pointer+1; j <= pointer+length; j++) { 1702 hw->eeprom.ops.read(hw, j, &word); 1703 checksum += word; 1704 } 1705 } 1706 } 1707 } 1708 1709 checksum = (u16)IXGBE_EEPROM_SUM - checksum; 1710 1711 return checksum; 1712 } 1713 1714 /** 1715 * ixgbe_validate_eeprom_checksum_generic - Validate EEPROM checksum 1716 * @hw: pointer to hardware structure 1717 * @checksum_val: calculated checksum 1718 * 1719 * Performs checksum calculation and validates the EEPROM checksum. If the 1720 * caller does not need checksum_val, the value can be NULL. 1721 **/ 1722 s32 ixgbe_validate_eeprom_checksum_generic(struct ixgbe_hw *hw, 1723 u16 *checksum_val) 1724 { 1725 s32 status; 1726 u16 checksum; 1727 u16 read_checksum = 0; 1728 1729 /* 1730 * Read the first word from the EEPROM. If this times out or fails, do 1731 * not continue or we could be in for a very long wait while every 1732 * EEPROM read fails 1733 */ 1734 status = hw->eeprom.ops.read(hw, 0, &checksum); 1735 1736 if (status == 0) { 1737 checksum = hw->eeprom.ops.calc_checksum(hw); 1738 1739 hw->eeprom.ops.read(hw, IXGBE_EEPROM_CHECKSUM, &read_checksum); 1740 1741 /* 1742 * Verify read checksum from EEPROM is the same as 1743 * calculated checksum 1744 */ 1745 if (read_checksum != checksum) 1746 status = IXGBE_ERR_EEPROM_CHECKSUM; 1747 1748 /* If the user cares, return the calculated checksum */ 1749 if (checksum_val) 1750 *checksum_val = checksum; 1751 } else { 1752 hw_dbg(hw, "EEPROM read failed\n"); 1753 } 1754 1755 return status; 1756 } 1757 1758 /** 1759 * ixgbe_update_eeprom_checksum_generic - Updates the EEPROM checksum 1760 * @hw: pointer to hardware structure 1761 **/ 1762 s32 ixgbe_update_eeprom_checksum_generic(struct ixgbe_hw *hw) 1763 { 1764 s32 status; 1765 u16 checksum; 1766 1767 /* 1768 * Read the first word from the EEPROM. If this times out or fails, do 1769 * not continue or we could be in for a very long wait while every 1770 * EEPROM read fails 1771 */ 1772 status = hw->eeprom.ops.read(hw, 0, &checksum); 1773 1774 if (status == 0) { 1775 checksum = hw->eeprom.ops.calc_checksum(hw); 1776 status = hw->eeprom.ops.write(hw, IXGBE_EEPROM_CHECKSUM, 1777 checksum); 1778 } else { 1779 hw_dbg(hw, "EEPROM read failed\n"); 1780 } 1781 1782 return status; 1783 } 1784 1785 /** 1786 * ixgbe_set_rar_generic - Set Rx address register 1787 * @hw: pointer to hardware structure 1788 * @index: Receive address register to write 1789 * @addr: Address to put into receive address register 1790 * @vmdq: VMDq "set" or "pool" index 1791 * @enable_addr: set flag that address is active 1792 * 1793 * Puts an ethernet address into a receive address register. 1794 **/ 1795 s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq, 1796 u32 enable_addr) 1797 { 1798 u32 rar_low, rar_high; 1799 u32 rar_entries = hw->mac.num_rar_entries; 1800 1801 /* Make sure we are using a valid rar index range */ 1802 if (index >= rar_entries) { 1803 hw_dbg(hw, "RAR index %d is out of range.\n", index); 1804 return IXGBE_ERR_INVALID_ARGUMENT; 1805 } 1806 1807 /* setup VMDq pool selection before this RAR gets enabled */ 1808 hw->mac.ops.set_vmdq(hw, index, vmdq); 1809 1810 /* 1811 * HW expects these in little endian so we reverse the byte 1812 * order from network order (big endian) to little endian 1813 */ 1814 rar_low = ((u32)addr[0] | 1815 ((u32)addr[1] << 8) | 1816 ((u32)addr[2] << 16) | 1817 ((u32)addr[3] << 24)); 1818 /* 1819 * Some parts put the VMDq setting in the extra RAH bits, 1820 * so save everything except the lower 16 bits that hold part 1821 * of the address and the address valid bit. 1822 */ 1823 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index)); 1824 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV); 1825 rar_high |= ((u32)addr[4] | ((u32)addr[5] << 8)); 1826 1827 if (enable_addr != 0) 1828 rar_high |= IXGBE_RAH_AV; 1829 1830 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low); 1831 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high); 1832 1833 return 0; 1834 } 1835 1836 /** 1837 * ixgbe_clear_rar_generic - Remove Rx address register 1838 * @hw: pointer to hardware structure 1839 * @index: Receive address register to write 1840 * 1841 * Clears an ethernet address from a receive address register. 1842 **/ 1843 s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index) 1844 { 1845 u32 rar_high; 1846 u32 rar_entries = hw->mac.num_rar_entries; 1847 1848 /* Make sure we are using a valid rar index range */ 1849 if (index >= rar_entries) { 1850 hw_dbg(hw, "RAR index %d is out of range.\n", index); 1851 return IXGBE_ERR_INVALID_ARGUMENT; 1852 } 1853 1854 /* 1855 * Some parts put the VMDq setting in the extra RAH bits, 1856 * so save everything except the lower 16 bits that hold part 1857 * of the address and the address valid bit. 1858 */ 1859 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index)); 1860 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV); 1861 1862 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), 0); 1863 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high); 1864 1865 /* clear VMDq pool/queue selection for this RAR */ 1866 hw->mac.ops.clear_vmdq(hw, index, IXGBE_CLEAR_VMDQ_ALL); 1867 1868 return 0; 1869 } 1870 1871 /** 1872 * ixgbe_init_rx_addrs_generic - Initializes receive address filters. 1873 * @hw: pointer to hardware structure 1874 * 1875 * Places the MAC address in receive address register 0 and clears the rest 1876 * of the receive address registers. Clears the multicast table. Assumes 1877 * the receiver is in reset when the routine is called. 1878 **/ 1879 s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw) 1880 { 1881 u32 i; 1882 u32 rar_entries = hw->mac.num_rar_entries; 1883 1884 /* 1885 * If the current mac address is valid, assume it is a software override 1886 * to the permanent address. 1887 * Otherwise, use the permanent address from the eeprom. 1888 */ 1889 if (!is_valid_ether_addr(hw->mac.addr)) { 1890 /* Get the MAC address from the RAR0 for later reference */ 1891 hw->mac.ops.get_mac_addr(hw, hw->mac.addr); 1892 1893 hw_dbg(hw, " Keeping Current RAR0 Addr =%pM\n", hw->mac.addr); 1894 } else { 1895 /* Setup the receive address. */ 1896 hw_dbg(hw, "Overriding MAC Address in RAR[0]\n"); 1897 hw_dbg(hw, " New MAC Addr =%pM\n", hw->mac.addr); 1898 1899 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV); 1900 1901 /* clear VMDq pool/queue selection for RAR 0 */ 1902 hw->mac.ops.clear_vmdq(hw, 0, IXGBE_CLEAR_VMDQ_ALL); 1903 } 1904 hw->addr_ctrl.overflow_promisc = 0; 1905 1906 hw->addr_ctrl.rar_used_count = 1; 1907 1908 /* Zero out the other receive addresses. */ 1909 hw_dbg(hw, "Clearing RAR[1-%d]\n", rar_entries - 1); 1910 for (i = 1; i < rar_entries; i++) { 1911 IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0); 1912 IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0); 1913 } 1914 1915 /* Clear the MTA */ 1916 hw->addr_ctrl.mta_in_use = 0; 1917 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type); 1918 1919 hw_dbg(hw, " Clearing MTA\n"); 1920 for (i = 0; i < hw->mac.mcft_size; i++) 1921 IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0); 1922 1923 if (hw->mac.ops.init_uta_tables) 1924 hw->mac.ops.init_uta_tables(hw); 1925 1926 return 0; 1927 } 1928 1929 /** 1930 * ixgbe_mta_vector - Determines bit-vector in multicast table to set 1931 * @hw: pointer to hardware structure 1932 * @mc_addr: the multicast address 1933 * 1934 * Extracts the 12 bits, from a multicast address, to determine which 1935 * bit-vector to set in the multicast table. The hardware uses 12 bits, from 1936 * incoming rx multicast addresses, to determine the bit-vector to check in 1937 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set 1938 * by the MO field of the MCSTCTRL. The MO field is set during initialization 1939 * to mc_filter_type. 1940 **/ 1941 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr) 1942 { 1943 u32 vector = 0; 1944 1945 switch (hw->mac.mc_filter_type) { 1946 case 0: /* use bits [47:36] of the address */ 1947 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4)); 1948 break; 1949 case 1: /* use bits [46:35] of the address */ 1950 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5)); 1951 break; 1952 case 2: /* use bits [45:34] of the address */ 1953 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6)); 1954 break; 1955 case 3: /* use bits [43:32] of the address */ 1956 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8)); 1957 break; 1958 default: /* Invalid mc_filter_type */ 1959 hw_dbg(hw, "MC filter type param set incorrectly\n"); 1960 break; 1961 } 1962 1963 /* vector can only be 12-bits or boundary will be exceeded */ 1964 vector &= 0xFFF; 1965 return vector; 1966 } 1967 1968 /** 1969 * ixgbe_set_mta - Set bit-vector in multicast table 1970 * @hw: pointer to hardware structure 1971 * @hash_value: Multicast address hash value 1972 * 1973 * Sets the bit-vector in the multicast table. 1974 **/ 1975 static void ixgbe_set_mta(struct ixgbe_hw *hw, u8 *mc_addr) 1976 { 1977 u32 vector; 1978 u32 vector_bit; 1979 u32 vector_reg; 1980 1981 hw->addr_ctrl.mta_in_use++; 1982 1983 vector = ixgbe_mta_vector(hw, mc_addr); 1984 hw_dbg(hw, " bit-vector = 0x%03X\n", vector); 1985 1986 /* 1987 * The MTA is a register array of 128 32-bit registers. It is treated 1988 * like an array of 4096 bits. We want to set bit 1989 * BitArray[vector_value]. So we figure out what register the bit is 1990 * in, read it, OR in the new bit, then write back the new value. The 1991 * register is determined by the upper 7 bits of the vector value and 1992 * the bit within that register are determined by the lower 5 bits of 1993 * the value. 1994 */ 1995 vector_reg = (vector >> 5) & 0x7F; 1996 vector_bit = vector & 0x1F; 1997 hw->mac.mta_shadow[vector_reg] |= (1 << vector_bit); 1998 } 1999 2000 /** 2001 * ixgbe_update_mc_addr_list_generic - Updates MAC list of multicast addresses 2002 * @hw: pointer to hardware structure 2003 * @netdev: pointer to net device structure 2004 * 2005 * The given list replaces any existing list. Clears the MC addrs from receive 2006 * address registers and the multicast table. Uses unused receive address 2007 * registers for the first multicast addresses, and hashes the rest into the 2008 * multicast table. 2009 **/ 2010 s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw, 2011 struct net_device *netdev) 2012 { 2013 struct netdev_hw_addr *ha; 2014 u32 i; 2015 2016 /* 2017 * Set the new number of MC addresses that we are being requested to 2018 * use. 2019 */ 2020 hw->addr_ctrl.num_mc_addrs = netdev_mc_count(netdev); 2021 hw->addr_ctrl.mta_in_use = 0; 2022 2023 /* Clear mta_shadow */ 2024 hw_dbg(hw, " Clearing MTA\n"); 2025 memset(&hw->mac.mta_shadow, 0, sizeof(hw->mac.mta_shadow)); 2026 2027 /* Update mta shadow */ 2028 netdev_for_each_mc_addr(ha, netdev) { 2029 hw_dbg(hw, " Adding the multicast addresses:\n"); 2030 ixgbe_set_mta(hw, ha->addr); 2031 } 2032 2033 /* Enable mta */ 2034 for (i = 0; i < hw->mac.mcft_size; i++) 2035 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_MTA(0), i, 2036 hw->mac.mta_shadow[i]); 2037 2038 if (hw->addr_ctrl.mta_in_use > 0) 2039 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, 2040 IXGBE_MCSTCTRL_MFE | hw->mac.mc_filter_type); 2041 2042 hw_dbg(hw, "ixgbe_update_mc_addr_list_generic Complete\n"); 2043 return 0; 2044 } 2045 2046 /** 2047 * ixgbe_enable_mc_generic - Enable multicast address in RAR 2048 * @hw: pointer to hardware structure 2049 * 2050 * Enables multicast address in RAR and the use of the multicast hash table. 2051 **/ 2052 s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw) 2053 { 2054 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl; 2055 2056 if (a->mta_in_use > 0) 2057 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, IXGBE_MCSTCTRL_MFE | 2058 hw->mac.mc_filter_type); 2059 2060 return 0; 2061 } 2062 2063 /** 2064 * ixgbe_disable_mc_generic - Disable multicast address in RAR 2065 * @hw: pointer to hardware structure 2066 * 2067 * Disables multicast address in RAR and the use of the multicast hash table. 2068 **/ 2069 s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw) 2070 { 2071 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl; 2072 2073 if (a->mta_in_use > 0) 2074 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type); 2075 2076 return 0; 2077 } 2078 2079 /** 2080 * ixgbe_fc_enable_generic - Enable flow control 2081 * @hw: pointer to hardware structure 2082 * 2083 * Enable flow control according to the current settings. 2084 **/ 2085 s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw) 2086 { 2087 s32 ret_val = 0; 2088 u32 mflcn_reg, fccfg_reg; 2089 u32 reg; 2090 u32 fcrtl, fcrth; 2091 int i; 2092 2093 /* 2094 * Validate the water mark configuration for packet buffer 0. Zero 2095 * water marks indicate that the packet buffer was not configured 2096 * and the watermarks for packet buffer 0 should always be configured. 2097 */ 2098 if (!hw->fc.low_water || 2099 !hw->fc.high_water[0] || 2100 !hw->fc.pause_time) { 2101 hw_dbg(hw, "Invalid water mark configuration\n"); 2102 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS; 2103 goto out; 2104 } 2105 2106 /* Negotiate the fc mode to use */ 2107 ixgbe_fc_autoneg(hw); 2108 2109 /* Disable any previous flow control settings */ 2110 mflcn_reg = IXGBE_READ_REG(hw, IXGBE_MFLCN); 2111 mflcn_reg &= ~(IXGBE_MFLCN_RPFCE_MASK | IXGBE_MFLCN_RFCE); 2112 2113 fccfg_reg = IXGBE_READ_REG(hw, IXGBE_FCCFG); 2114 fccfg_reg &= ~(IXGBE_FCCFG_TFCE_802_3X | IXGBE_FCCFG_TFCE_PRIORITY); 2115 2116 /* 2117 * The possible values of fc.current_mode are: 2118 * 0: Flow control is completely disabled 2119 * 1: Rx flow control is enabled (we can receive pause frames, 2120 * but not send pause frames). 2121 * 2: Tx flow control is enabled (we can send pause frames but 2122 * we do not support receiving pause frames). 2123 * 3: Both Rx and Tx flow control (symmetric) are enabled. 2124 * other: Invalid. 2125 */ 2126 switch (hw->fc.current_mode) { 2127 case ixgbe_fc_none: 2128 /* 2129 * Flow control is disabled by software override or autoneg. 2130 * The code below will actually disable it in the HW. 2131 */ 2132 break; 2133 case ixgbe_fc_rx_pause: 2134 /* 2135 * Rx Flow control is enabled and Tx Flow control is 2136 * disabled by software override. Since there really 2137 * isn't a way to advertise that we are capable of RX 2138 * Pause ONLY, we will advertise that we support both 2139 * symmetric and asymmetric Rx PAUSE. Later, we will 2140 * disable the adapter's ability to send PAUSE frames. 2141 */ 2142 mflcn_reg |= IXGBE_MFLCN_RFCE; 2143 break; 2144 case ixgbe_fc_tx_pause: 2145 /* 2146 * Tx Flow control is enabled, and Rx Flow control is 2147 * disabled by software override. 2148 */ 2149 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X; 2150 break; 2151 case ixgbe_fc_full: 2152 /* Flow control (both Rx and Tx) is enabled by SW override. */ 2153 mflcn_reg |= IXGBE_MFLCN_RFCE; 2154 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X; 2155 break; 2156 default: 2157 hw_dbg(hw, "Flow control param set incorrectly\n"); 2158 ret_val = IXGBE_ERR_CONFIG; 2159 goto out; 2160 break; 2161 } 2162 2163 /* Set 802.3x based flow control settings. */ 2164 mflcn_reg |= IXGBE_MFLCN_DPF; 2165 IXGBE_WRITE_REG(hw, IXGBE_MFLCN, mflcn_reg); 2166 IXGBE_WRITE_REG(hw, IXGBE_FCCFG, fccfg_reg); 2167 2168 fcrtl = (hw->fc.low_water << 10) | IXGBE_FCRTL_XONE; 2169 2170 /* Set up and enable Rx high/low water mark thresholds, enable XON. */ 2171 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) { 2172 if ((hw->fc.current_mode & ixgbe_fc_tx_pause) && 2173 hw->fc.high_water[i]) { 2174 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), fcrtl); 2175 fcrth = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN; 2176 } else { 2177 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), 0); 2178 /* 2179 * In order to prevent Tx hangs when the internal Tx 2180 * switch is enabled we must set the high water mark 2181 * to the maximum FCRTH value. This allows the Tx 2182 * switch to function even under heavy Rx workloads. 2183 */ 2184 fcrth = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i)) - 32; 2185 } 2186 2187 IXGBE_WRITE_REG(hw, IXGBE_FCRTH_82599(i), fcrth); 2188 } 2189 2190 /* Configure pause time (2 TCs per register) */ 2191 reg = hw->fc.pause_time * 0x00010001; 2192 for (i = 0; i < (MAX_TRAFFIC_CLASS / 2); i++) 2193 IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg); 2194 2195 IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2); 2196 2197 out: 2198 return ret_val; 2199 } 2200 2201 /** 2202 * ixgbe_negotiate_fc - Negotiate flow control 2203 * @hw: pointer to hardware structure 2204 * @adv_reg: flow control advertised settings 2205 * @lp_reg: link partner's flow control settings 2206 * @adv_sym: symmetric pause bit in advertisement 2207 * @adv_asm: asymmetric pause bit in advertisement 2208 * @lp_sym: symmetric pause bit in link partner advertisement 2209 * @lp_asm: asymmetric pause bit in link partner advertisement 2210 * 2211 * Find the intersection between advertised settings and link partner's 2212 * advertised settings 2213 **/ 2214 static s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg, 2215 u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm) 2216 { 2217 if ((!(adv_reg)) || (!(lp_reg))) 2218 return IXGBE_ERR_FC_NOT_NEGOTIATED; 2219 2220 if ((adv_reg & adv_sym) && (lp_reg & lp_sym)) { 2221 /* 2222 * Now we need to check if the user selected Rx ONLY 2223 * of pause frames. In this case, we had to advertise 2224 * FULL flow control because we could not advertise RX 2225 * ONLY. Hence, we must now check to see if we need to 2226 * turn OFF the TRANSMISSION of PAUSE frames. 2227 */ 2228 if (hw->fc.requested_mode == ixgbe_fc_full) { 2229 hw->fc.current_mode = ixgbe_fc_full; 2230 hw_dbg(hw, "Flow Control = FULL.\n"); 2231 } else { 2232 hw->fc.current_mode = ixgbe_fc_rx_pause; 2233 hw_dbg(hw, "Flow Control=RX PAUSE frames only\n"); 2234 } 2235 } else if (!(adv_reg & adv_sym) && (adv_reg & adv_asm) && 2236 (lp_reg & lp_sym) && (lp_reg & lp_asm)) { 2237 hw->fc.current_mode = ixgbe_fc_tx_pause; 2238 hw_dbg(hw, "Flow Control = TX PAUSE frames only.\n"); 2239 } else if ((adv_reg & adv_sym) && (adv_reg & adv_asm) && 2240 !(lp_reg & lp_sym) && (lp_reg & lp_asm)) { 2241 hw->fc.current_mode = ixgbe_fc_rx_pause; 2242 hw_dbg(hw, "Flow Control = RX PAUSE frames only.\n"); 2243 } else { 2244 hw->fc.current_mode = ixgbe_fc_none; 2245 hw_dbg(hw, "Flow Control = NONE.\n"); 2246 } 2247 return 0; 2248 } 2249 2250 /** 2251 * ixgbe_fc_autoneg_fiber - Enable flow control on 1 gig fiber 2252 * @hw: pointer to hardware structure 2253 * 2254 * Enable flow control according on 1 gig fiber. 2255 **/ 2256 static s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw) 2257 { 2258 u32 pcs_anadv_reg, pcs_lpab_reg, linkstat; 2259 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED; 2260 2261 /* 2262 * On multispeed fiber at 1g, bail out if 2263 * - link is up but AN did not complete, or if 2264 * - link is up and AN completed but timed out 2265 */ 2266 2267 linkstat = IXGBE_READ_REG(hw, IXGBE_PCS1GLSTA); 2268 if ((!!(linkstat & IXGBE_PCS1GLSTA_AN_COMPLETE) == 0) || 2269 (!!(linkstat & IXGBE_PCS1GLSTA_AN_TIMED_OUT) == 1)) 2270 goto out; 2271 2272 pcs_anadv_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA); 2273 pcs_lpab_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANLP); 2274 2275 ret_val = ixgbe_negotiate_fc(hw, pcs_anadv_reg, 2276 pcs_lpab_reg, IXGBE_PCS1GANA_SYM_PAUSE, 2277 IXGBE_PCS1GANA_ASM_PAUSE, 2278 IXGBE_PCS1GANA_SYM_PAUSE, 2279 IXGBE_PCS1GANA_ASM_PAUSE); 2280 2281 out: 2282 return ret_val; 2283 } 2284 2285 /** 2286 * ixgbe_fc_autoneg_backplane - Enable flow control IEEE clause 37 2287 * @hw: pointer to hardware structure 2288 * 2289 * Enable flow control according to IEEE clause 37. 2290 **/ 2291 static s32 ixgbe_fc_autoneg_backplane(struct ixgbe_hw *hw) 2292 { 2293 u32 links2, anlp1_reg, autoc_reg, links; 2294 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED; 2295 2296 /* 2297 * On backplane, bail out if 2298 * - backplane autoneg was not completed, or if 2299 * - we are 82599 and link partner is not AN enabled 2300 */ 2301 links = IXGBE_READ_REG(hw, IXGBE_LINKS); 2302 if ((links & IXGBE_LINKS_KX_AN_COMP) == 0) 2303 goto out; 2304 2305 if (hw->mac.type == ixgbe_mac_82599EB) { 2306 links2 = IXGBE_READ_REG(hw, IXGBE_LINKS2); 2307 if ((links2 & IXGBE_LINKS2_AN_SUPPORTED) == 0) 2308 goto out; 2309 } 2310 /* 2311 * Read the 10g AN autoc and LP ability registers and resolve 2312 * local flow control settings accordingly 2313 */ 2314 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC); 2315 anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1); 2316 2317 ret_val = ixgbe_negotiate_fc(hw, autoc_reg, 2318 anlp1_reg, IXGBE_AUTOC_SYM_PAUSE, IXGBE_AUTOC_ASM_PAUSE, 2319 IXGBE_ANLP1_SYM_PAUSE, IXGBE_ANLP1_ASM_PAUSE); 2320 2321 out: 2322 return ret_val; 2323 } 2324 2325 /** 2326 * ixgbe_fc_autoneg_copper - Enable flow control IEEE clause 37 2327 * @hw: pointer to hardware structure 2328 * 2329 * Enable flow control according to IEEE clause 37. 2330 **/ 2331 static s32 ixgbe_fc_autoneg_copper(struct ixgbe_hw *hw) 2332 { 2333 u16 technology_ability_reg = 0; 2334 u16 lp_technology_ability_reg = 0; 2335 2336 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE, 2337 MDIO_MMD_AN, 2338 &technology_ability_reg); 2339 hw->phy.ops.read_reg(hw, MDIO_AN_LPA, 2340 MDIO_MMD_AN, 2341 &lp_technology_ability_reg); 2342 2343 return ixgbe_negotiate_fc(hw, (u32)technology_ability_reg, 2344 (u32)lp_technology_ability_reg, 2345 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE, 2346 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE); 2347 } 2348 2349 /** 2350 * ixgbe_fc_autoneg - Configure flow control 2351 * @hw: pointer to hardware structure 2352 * 2353 * Compares our advertised flow control capabilities to those advertised by 2354 * our link partner, and determines the proper flow control mode to use. 2355 **/ 2356 void ixgbe_fc_autoneg(struct ixgbe_hw *hw) 2357 { 2358 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED; 2359 ixgbe_link_speed speed; 2360 bool link_up; 2361 2362 /* 2363 * AN should have completed when the cable was plugged in. 2364 * Look for reasons to bail out. Bail out if: 2365 * - FC autoneg is disabled, or if 2366 * - link is not up. 2367 * 2368 * Since we're being called from an LSC, link is already known to be up. 2369 * So use link_up_wait_to_complete=false. 2370 */ 2371 if (hw->fc.disable_fc_autoneg) 2372 goto out; 2373 2374 hw->mac.ops.check_link(hw, &speed, &link_up, false); 2375 if (!link_up) 2376 goto out; 2377 2378 switch (hw->phy.media_type) { 2379 /* Autoneg flow control on fiber adapters */ 2380 case ixgbe_media_type_fiber: 2381 if (speed == IXGBE_LINK_SPEED_1GB_FULL) 2382 ret_val = ixgbe_fc_autoneg_fiber(hw); 2383 break; 2384 2385 /* Autoneg flow control on backplane adapters */ 2386 case ixgbe_media_type_backplane: 2387 ret_val = ixgbe_fc_autoneg_backplane(hw); 2388 break; 2389 2390 /* Autoneg flow control on copper adapters */ 2391 case ixgbe_media_type_copper: 2392 if (ixgbe_device_supports_autoneg_fc(hw) == 0) 2393 ret_val = ixgbe_fc_autoneg_copper(hw); 2394 break; 2395 2396 default: 2397 break; 2398 } 2399 2400 out: 2401 if (ret_val == 0) { 2402 hw->fc.fc_was_autonegged = true; 2403 } else { 2404 hw->fc.fc_was_autonegged = false; 2405 hw->fc.current_mode = hw->fc.requested_mode; 2406 } 2407 } 2408 2409 /** 2410 * ixgbe_disable_pcie_master - Disable PCI-express master access 2411 * @hw: pointer to hardware structure 2412 * 2413 * Disables PCI-Express master access and verifies there are no pending 2414 * requests. IXGBE_ERR_MASTER_REQUESTS_PENDING is returned if master disable 2415 * bit hasn't caused the master requests to be disabled, else 0 2416 * is returned signifying master requests disabled. 2417 **/ 2418 static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw) 2419 { 2420 struct ixgbe_adapter *adapter = hw->back; 2421 s32 status = 0; 2422 u32 i; 2423 u16 value; 2424 2425 /* Always set this bit to ensure any future transactions are blocked */ 2426 IXGBE_WRITE_REG(hw, IXGBE_CTRL, IXGBE_CTRL_GIO_DIS); 2427 2428 /* Exit if master requests are blocked */ 2429 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO)) 2430 goto out; 2431 2432 /* Poll for master request bit to clear */ 2433 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) { 2434 udelay(100); 2435 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO)) 2436 goto out; 2437 } 2438 2439 /* 2440 * Two consecutive resets are required via CTRL.RST per datasheet 2441 * 5.2.5.3.2 Master Disable. We set a flag to inform the reset routine 2442 * of this need. The first reset prevents new master requests from 2443 * being issued by our device. We then must wait 1usec or more for any 2444 * remaining completions from the PCIe bus to trickle in, and then reset 2445 * again to clear out any effects they may have had on our device. 2446 */ 2447 hw_dbg(hw, "GIO Master Disable bit didn't clear - requesting resets\n"); 2448 hw->mac.flags |= IXGBE_FLAGS_DOUBLE_RESET_REQUIRED; 2449 2450 /* 2451 * Before proceeding, make sure that the PCIe block does not have 2452 * transactions pending. 2453 */ 2454 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) { 2455 udelay(100); 2456 pci_read_config_word(adapter->pdev, IXGBE_PCI_DEVICE_STATUS, 2457 &value); 2458 if (!(value & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING)) 2459 goto out; 2460 } 2461 2462 hw_dbg(hw, "PCIe transaction pending bit also did not clear.\n"); 2463 status = IXGBE_ERR_MASTER_REQUESTS_PENDING; 2464 2465 out: 2466 return status; 2467 } 2468 2469 /** 2470 * ixgbe_acquire_swfw_sync - Acquire SWFW semaphore 2471 * @hw: pointer to hardware structure 2472 * @mask: Mask to specify which semaphore to acquire 2473 * 2474 * Acquires the SWFW semaphore through the GSSR register for the specified 2475 * function (CSR, PHY0, PHY1, EEPROM, Flash) 2476 **/ 2477 s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u16 mask) 2478 { 2479 u32 gssr; 2480 u32 swmask = mask; 2481 u32 fwmask = mask << 5; 2482 s32 timeout = 200; 2483 2484 while (timeout) { 2485 /* 2486 * SW EEPROM semaphore bit is used for access to all 2487 * SW_FW_SYNC/GSSR bits (not just EEPROM) 2488 */ 2489 if (ixgbe_get_eeprom_semaphore(hw)) 2490 return IXGBE_ERR_SWFW_SYNC; 2491 2492 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR); 2493 if (!(gssr & (fwmask | swmask))) 2494 break; 2495 2496 /* 2497 * Firmware currently using resource (fwmask) or other software 2498 * thread currently using resource (swmask) 2499 */ 2500 ixgbe_release_eeprom_semaphore(hw); 2501 usleep_range(5000, 10000); 2502 timeout--; 2503 } 2504 2505 if (!timeout) { 2506 hw_dbg(hw, "Driver can't access resource, SW_FW_SYNC timeout.\n"); 2507 return IXGBE_ERR_SWFW_SYNC; 2508 } 2509 2510 gssr |= swmask; 2511 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr); 2512 2513 ixgbe_release_eeprom_semaphore(hw); 2514 return 0; 2515 } 2516 2517 /** 2518 * ixgbe_release_swfw_sync - Release SWFW semaphore 2519 * @hw: pointer to hardware structure 2520 * @mask: Mask to specify which semaphore to release 2521 * 2522 * Releases the SWFW semaphore through the GSSR register for the specified 2523 * function (CSR, PHY0, PHY1, EEPROM, Flash) 2524 **/ 2525 void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u16 mask) 2526 { 2527 u32 gssr; 2528 u32 swmask = mask; 2529 2530 ixgbe_get_eeprom_semaphore(hw); 2531 2532 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR); 2533 gssr &= ~swmask; 2534 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr); 2535 2536 ixgbe_release_eeprom_semaphore(hw); 2537 } 2538 2539 /** 2540 * ixgbe_disable_rx_buff_generic - Stops the receive data path 2541 * @hw: pointer to hardware structure 2542 * 2543 * Stops the receive data path and waits for the HW to internally 2544 * empty the Rx security block. 2545 **/ 2546 s32 ixgbe_disable_rx_buff_generic(struct ixgbe_hw *hw) 2547 { 2548 #define IXGBE_MAX_SECRX_POLL 40 2549 int i; 2550 int secrxreg; 2551 2552 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL); 2553 secrxreg |= IXGBE_SECRXCTRL_RX_DIS; 2554 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg); 2555 for (i = 0; i < IXGBE_MAX_SECRX_POLL; i++) { 2556 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXSTAT); 2557 if (secrxreg & IXGBE_SECRXSTAT_SECRX_RDY) 2558 break; 2559 else 2560 /* Use interrupt-safe sleep just in case */ 2561 udelay(1000); 2562 } 2563 2564 /* For informational purposes only */ 2565 if (i >= IXGBE_MAX_SECRX_POLL) 2566 hw_dbg(hw, "Rx unit being enabled before security " 2567 "path fully disabled. Continuing with init.\n"); 2568 2569 return 0; 2570 2571 } 2572 2573 /** 2574 * ixgbe_enable_rx_buff - Enables the receive data path 2575 * @hw: pointer to hardware structure 2576 * 2577 * Enables the receive data path 2578 **/ 2579 s32 ixgbe_enable_rx_buff_generic(struct ixgbe_hw *hw) 2580 { 2581 int secrxreg; 2582 2583 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL); 2584 secrxreg &= ~IXGBE_SECRXCTRL_RX_DIS; 2585 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg); 2586 IXGBE_WRITE_FLUSH(hw); 2587 2588 return 0; 2589 } 2590 2591 /** 2592 * ixgbe_enable_rx_dma_generic - Enable the Rx DMA unit 2593 * @hw: pointer to hardware structure 2594 * @regval: register value to write to RXCTRL 2595 * 2596 * Enables the Rx DMA unit 2597 **/ 2598 s32 ixgbe_enable_rx_dma_generic(struct ixgbe_hw *hw, u32 regval) 2599 { 2600 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, regval); 2601 2602 return 0; 2603 } 2604 2605 /** 2606 * ixgbe_blink_led_start_generic - Blink LED based on index. 2607 * @hw: pointer to hardware structure 2608 * @index: led number to blink 2609 **/ 2610 s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index) 2611 { 2612 ixgbe_link_speed speed = 0; 2613 bool link_up = false; 2614 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC); 2615 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL); 2616 s32 ret_val = 0; 2617 2618 /* 2619 * Link must be up to auto-blink the LEDs; 2620 * Force it if link is down. 2621 */ 2622 hw->mac.ops.check_link(hw, &speed, &link_up, false); 2623 2624 if (!link_up) { 2625 /* Need the SW/FW semaphore around AUTOC writes if 82599 and 2626 * LESM is on. 2627 */ 2628 bool got_lock = false; 2629 2630 if ((hw->mac.type == ixgbe_mac_82599EB) && 2631 ixgbe_verify_lesm_fw_enabled_82599(hw)) { 2632 ret_val = hw->mac.ops.acquire_swfw_sync(hw, 2633 IXGBE_GSSR_MAC_CSR_SM); 2634 if (ret_val) 2635 goto out; 2636 2637 got_lock = true; 2638 } 2639 autoc_reg |= IXGBE_AUTOC_AN_RESTART; 2640 autoc_reg |= IXGBE_AUTOC_FLU; 2641 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg); 2642 IXGBE_WRITE_FLUSH(hw); 2643 2644 if (got_lock) 2645 hw->mac.ops.release_swfw_sync(hw, 2646 IXGBE_GSSR_MAC_CSR_SM); 2647 usleep_range(10000, 20000); 2648 } 2649 2650 led_reg &= ~IXGBE_LED_MODE_MASK(index); 2651 led_reg |= IXGBE_LED_BLINK(index); 2652 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg); 2653 IXGBE_WRITE_FLUSH(hw); 2654 2655 out: 2656 return ret_val; 2657 } 2658 2659 /** 2660 * ixgbe_blink_led_stop_generic - Stop blinking LED based on index. 2661 * @hw: pointer to hardware structure 2662 * @index: led number to stop blinking 2663 **/ 2664 s32 ixgbe_blink_led_stop_generic(struct ixgbe_hw *hw, u32 index) 2665 { 2666 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC); 2667 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL); 2668 s32 ret_val = 0; 2669 bool got_lock = false; 2670 2671 /* Need the SW/FW semaphore around AUTOC writes if 82599 and 2672 * LESM is on. 2673 */ 2674 if ((hw->mac.type == ixgbe_mac_82599EB) && 2675 ixgbe_verify_lesm_fw_enabled_82599(hw)) { 2676 ret_val = hw->mac.ops.acquire_swfw_sync(hw, 2677 IXGBE_GSSR_MAC_CSR_SM); 2678 if (ret_val) 2679 goto out; 2680 2681 got_lock = true; 2682 } 2683 2684 autoc_reg &= ~IXGBE_AUTOC_FLU; 2685 autoc_reg |= IXGBE_AUTOC_AN_RESTART; 2686 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg); 2687 2688 if (hw->mac.type == ixgbe_mac_82599EB) 2689 ixgbe_reset_pipeline_82599(hw); 2690 2691 if (got_lock) 2692 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM); 2693 2694 led_reg &= ~IXGBE_LED_MODE_MASK(index); 2695 led_reg &= ~IXGBE_LED_BLINK(index); 2696 led_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index); 2697 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg); 2698 IXGBE_WRITE_FLUSH(hw); 2699 2700 out: 2701 return ret_val; 2702 } 2703 2704 /** 2705 * ixgbe_get_san_mac_addr_offset - Get SAN MAC address offset from the EEPROM 2706 * @hw: pointer to hardware structure 2707 * @san_mac_offset: SAN MAC address offset 2708 * 2709 * This function will read the EEPROM location for the SAN MAC address 2710 * pointer, and returns the value at that location. This is used in both 2711 * get and set mac_addr routines. 2712 **/ 2713 static s32 ixgbe_get_san_mac_addr_offset(struct ixgbe_hw *hw, 2714 u16 *san_mac_offset) 2715 { 2716 /* 2717 * First read the EEPROM pointer to see if the MAC addresses are 2718 * available. 2719 */ 2720 hw->eeprom.ops.read(hw, IXGBE_SAN_MAC_ADDR_PTR, san_mac_offset); 2721 2722 return 0; 2723 } 2724 2725 /** 2726 * ixgbe_get_san_mac_addr_generic - SAN MAC address retrieval from the EEPROM 2727 * @hw: pointer to hardware structure 2728 * @san_mac_addr: SAN MAC address 2729 * 2730 * Reads the SAN MAC address from the EEPROM, if it's available. This is 2731 * per-port, so set_lan_id() must be called before reading the addresses. 2732 * set_lan_id() is called by identify_sfp(), but this cannot be relied 2733 * upon for non-SFP connections, so we must call it here. 2734 **/ 2735 s32 ixgbe_get_san_mac_addr_generic(struct ixgbe_hw *hw, u8 *san_mac_addr) 2736 { 2737 u16 san_mac_data, san_mac_offset; 2738 u8 i; 2739 2740 /* 2741 * First read the EEPROM pointer to see if the MAC addresses are 2742 * available. If they're not, no point in calling set_lan_id() here. 2743 */ 2744 ixgbe_get_san_mac_addr_offset(hw, &san_mac_offset); 2745 2746 if ((san_mac_offset == 0) || (san_mac_offset == 0xFFFF)) { 2747 /* 2748 * No addresses available in this EEPROM. It's not an 2749 * error though, so just wipe the local address and return. 2750 */ 2751 for (i = 0; i < 6; i++) 2752 san_mac_addr[i] = 0xFF; 2753 2754 goto san_mac_addr_out; 2755 } 2756 2757 /* make sure we know which port we need to program */ 2758 hw->mac.ops.set_lan_id(hw); 2759 /* apply the port offset to the address offset */ 2760 (hw->bus.func) ? (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT1_OFFSET) : 2761 (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT0_OFFSET); 2762 for (i = 0; i < 3; i++) { 2763 hw->eeprom.ops.read(hw, san_mac_offset, &san_mac_data); 2764 san_mac_addr[i * 2] = (u8)(san_mac_data); 2765 san_mac_addr[i * 2 + 1] = (u8)(san_mac_data >> 8); 2766 san_mac_offset++; 2767 } 2768 2769 san_mac_addr_out: 2770 return 0; 2771 } 2772 2773 /** 2774 * ixgbe_get_pcie_msix_count_generic - Gets MSI-X vector count 2775 * @hw: pointer to hardware structure 2776 * 2777 * Read PCIe configuration space, and get the MSI-X vector count from 2778 * the capabilities table. 2779 **/ 2780 u16 ixgbe_get_pcie_msix_count_generic(struct ixgbe_hw *hw) 2781 { 2782 struct ixgbe_adapter *adapter = hw->back; 2783 u16 msix_count = 1; 2784 u16 max_msix_count; 2785 u16 pcie_offset; 2786 2787 switch (hw->mac.type) { 2788 case ixgbe_mac_82598EB: 2789 pcie_offset = IXGBE_PCIE_MSIX_82598_CAPS; 2790 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82598; 2791 break; 2792 case ixgbe_mac_82599EB: 2793 case ixgbe_mac_X540: 2794 pcie_offset = IXGBE_PCIE_MSIX_82599_CAPS; 2795 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82599; 2796 break; 2797 default: 2798 return msix_count; 2799 } 2800 2801 pci_read_config_word(adapter->pdev, pcie_offset, &msix_count); 2802 msix_count &= IXGBE_PCIE_MSIX_TBL_SZ_MASK; 2803 2804 /* MSI-X count is zero-based in HW */ 2805 msix_count++; 2806 2807 if (msix_count > max_msix_count) 2808 msix_count = max_msix_count; 2809 2810 return msix_count; 2811 } 2812 2813 /** 2814 * ixgbe_clear_vmdq_generic - Disassociate a VMDq pool index from a rx address 2815 * @hw: pointer to hardware struct 2816 * @rar: receive address register index to disassociate 2817 * @vmdq: VMDq pool index to remove from the rar 2818 **/ 2819 s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq) 2820 { 2821 u32 mpsar_lo, mpsar_hi; 2822 u32 rar_entries = hw->mac.num_rar_entries; 2823 2824 /* Make sure we are using a valid rar index range */ 2825 if (rar >= rar_entries) { 2826 hw_dbg(hw, "RAR index %d is out of range.\n", rar); 2827 return IXGBE_ERR_INVALID_ARGUMENT; 2828 } 2829 2830 mpsar_lo = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar)); 2831 mpsar_hi = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar)); 2832 2833 if (!mpsar_lo && !mpsar_hi) 2834 goto done; 2835 2836 if (vmdq == IXGBE_CLEAR_VMDQ_ALL) { 2837 if (mpsar_lo) { 2838 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0); 2839 mpsar_lo = 0; 2840 } 2841 if (mpsar_hi) { 2842 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0); 2843 mpsar_hi = 0; 2844 } 2845 } else if (vmdq < 32) { 2846 mpsar_lo &= ~(1 << vmdq); 2847 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar_lo); 2848 } else { 2849 mpsar_hi &= ~(1 << (vmdq - 32)); 2850 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar_hi); 2851 } 2852 2853 /* was that the last pool using this rar? */ 2854 if (mpsar_lo == 0 && mpsar_hi == 0 && rar != 0) 2855 hw->mac.ops.clear_rar(hw, rar); 2856 done: 2857 return 0; 2858 } 2859 2860 /** 2861 * ixgbe_set_vmdq_generic - Associate a VMDq pool index with a rx address 2862 * @hw: pointer to hardware struct 2863 * @rar: receive address register index to associate with a VMDq index 2864 * @vmdq: VMDq pool index 2865 **/ 2866 s32 ixgbe_set_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq) 2867 { 2868 u32 mpsar; 2869 u32 rar_entries = hw->mac.num_rar_entries; 2870 2871 /* Make sure we are using a valid rar index range */ 2872 if (rar >= rar_entries) { 2873 hw_dbg(hw, "RAR index %d is out of range.\n", rar); 2874 return IXGBE_ERR_INVALID_ARGUMENT; 2875 } 2876 2877 if (vmdq < 32) { 2878 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar)); 2879 mpsar |= 1 << vmdq; 2880 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar); 2881 } else { 2882 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar)); 2883 mpsar |= 1 << (vmdq - 32); 2884 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar); 2885 } 2886 return 0; 2887 } 2888 2889 /** 2890 * This function should only be involved in the IOV mode. 2891 * In IOV mode, Default pool is next pool after the number of 2892 * VFs advertized and not 0. 2893 * MPSAR table needs to be updated for SAN_MAC RAR [hw->mac.san_mac_rar_index] 2894 * 2895 * ixgbe_set_vmdq_san_mac - Associate default VMDq pool index with a rx address 2896 * @hw: pointer to hardware struct 2897 * @vmdq: VMDq pool index 2898 **/ 2899 s32 ixgbe_set_vmdq_san_mac_generic(struct ixgbe_hw *hw, u32 vmdq) 2900 { 2901 u32 rar = hw->mac.san_mac_rar_index; 2902 2903 if (vmdq < 32) { 2904 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 1 << vmdq); 2905 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0); 2906 } else { 2907 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0); 2908 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 1 << (vmdq - 32)); 2909 } 2910 2911 return 0; 2912 } 2913 2914 /** 2915 * ixgbe_init_uta_tables_generic - Initialize the Unicast Table Array 2916 * @hw: pointer to hardware structure 2917 **/ 2918 s32 ixgbe_init_uta_tables_generic(struct ixgbe_hw *hw) 2919 { 2920 int i; 2921 2922 for (i = 0; i < 128; i++) 2923 IXGBE_WRITE_REG(hw, IXGBE_UTA(i), 0); 2924 2925 return 0; 2926 } 2927 2928 /** 2929 * ixgbe_find_vlvf_slot - find the vlanid or the first empty slot 2930 * @hw: pointer to hardware structure 2931 * @vlan: VLAN id to write to VLAN filter 2932 * 2933 * return the VLVF index where this VLAN id should be placed 2934 * 2935 **/ 2936 static s32 ixgbe_find_vlvf_slot(struct ixgbe_hw *hw, u32 vlan) 2937 { 2938 u32 bits = 0; 2939 u32 first_empty_slot = 0; 2940 s32 regindex; 2941 2942 /* short cut the special case */ 2943 if (vlan == 0) 2944 return 0; 2945 2946 /* 2947 * Search for the vlan id in the VLVF entries. Save off the first empty 2948 * slot found along the way 2949 */ 2950 for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) { 2951 bits = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex)); 2952 if (!bits && !(first_empty_slot)) 2953 first_empty_slot = regindex; 2954 else if ((bits & 0x0FFF) == vlan) 2955 break; 2956 } 2957 2958 /* 2959 * If regindex is less than IXGBE_VLVF_ENTRIES, then we found the vlan 2960 * in the VLVF. Else use the first empty VLVF register for this 2961 * vlan id. 2962 */ 2963 if (regindex >= IXGBE_VLVF_ENTRIES) { 2964 if (first_empty_slot) 2965 regindex = first_empty_slot; 2966 else { 2967 hw_dbg(hw, "No space in VLVF.\n"); 2968 regindex = IXGBE_ERR_NO_SPACE; 2969 } 2970 } 2971 2972 return regindex; 2973 } 2974 2975 /** 2976 * ixgbe_set_vfta_generic - Set VLAN filter table 2977 * @hw: pointer to hardware structure 2978 * @vlan: VLAN id to write to VLAN filter 2979 * @vind: VMDq output index that maps queue to VLAN id in VFVFB 2980 * @vlan_on: boolean flag to turn on/off VLAN in VFVF 2981 * 2982 * Turn on/off specified VLAN in the VLAN filter table. 2983 **/ 2984 s32 ixgbe_set_vfta_generic(struct ixgbe_hw *hw, u32 vlan, u32 vind, 2985 bool vlan_on) 2986 { 2987 s32 regindex; 2988 u32 bitindex; 2989 u32 vfta; 2990 u32 bits; 2991 u32 vt; 2992 u32 targetbit; 2993 bool vfta_changed = false; 2994 2995 if (vlan > 4095) 2996 return IXGBE_ERR_PARAM; 2997 2998 /* 2999 * this is a 2 part operation - first the VFTA, then the 3000 * VLVF and VLVFB if VT Mode is set 3001 * We don't write the VFTA until we know the VLVF part succeeded. 3002 */ 3003 3004 /* Part 1 3005 * The VFTA is a bitstring made up of 128 32-bit registers 3006 * that enable the particular VLAN id, much like the MTA: 3007 * bits[11-5]: which register 3008 * bits[4-0]: which bit in the register 3009 */ 3010 regindex = (vlan >> 5) & 0x7F; 3011 bitindex = vlan & 0x1F; 3012 targetbit = (1 << bitindex); 3013 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(regindex)); 3014 3015 if (vlan_on) { 3016 if (!(vfta & targetbit)) { 3017 vfta |= targetbit; 3018 vfta_changed = true; 3019 } 3020 } else { 3021 if ((vfta & targetbit)) { 3022 vfta &= ~targetbit; 3023 vfta_changed = true; 3024 } 3025 } 3026 3027 /* Part 2 3028 * If VT Mode is set 3029 * Either vlan_on 3030 * make sure the vlan is in VLVF 3031 * set the vind bit in the matching VLVFB 3032 * Or !vlan_on 3033 * clear the pool bit and possibly the vind 3034 */ 3035 vt = IXGBE_READ_REG(hw, IXGBE_VT_CTL); 3036 if (vt & IXGBE_VT_CTL_VT_ENABLE) { 3037 s32 vlvf_index; 3038 3039 vlvf_index = ixgbe_find_vlvf_slot(hw, vlan); 3040 if (vlvf_index < 0) 3041 return vlvf_index; 3042 3043 if (vlan_on) { 3044 /* set the pool bit */ 3045 if (vind < 32) { 3046 bits = IXGBE_READ_REG(hw, 3047 IXGBE_VLVFB(vlvf_index*2)); 3048 bits |= (1 << vind); 3049 IXGBE_WRITE_REG(hw, 3050 IXGBE_VLVFB(vlvf_index*2), 3051 bits); 3052 } else { 3053 bits = IXGBE_READ_REG(hw, 3054 IXGBE_VLVFB((vlvf_index*2)+1)); 3055 bits |= (1 << (vind-32)); 3056 IXGBE_WRITE_REG(hw, 3057 IXGBE_VLVFB((vlvf_index*2)+1), 3058 bits); 3059 } 3060 } else { 3061 /* clear the pool bit */ 3062 if (vind < 32) { 3063 bits = IXGBE_READ_REG(hw, 3064 IXGBE_VLVFB(vlvf_index*2)); 3065 bits &= ~(1 << vind); 3066 IXGBE_WRITE_REG(hw, 3067 IXGBE_VLVFB(vlvf_index*2), 3068 bits); 3069 bits |= IXGBE_READ_REG(hw, 3070 IXGBE_VLVFB((vlvf_index*2)+1)); 3071 } else { 3072 bits = IXGBE_READ_REG(hw, 3073 IXGBE_VLVFB((vlvf_index*2)+1)); 3074 bits &= ~(1 << (vind-32)); 3075 IXGBE_WRITE_REG(hw, 3076 IXGBE_VLVFB((vlvf_index*2)+1), 3077 bits); 3078 bits |= IXGBE_READ_REG(hw, 3079 IXGBE_VLVFB(vlvf_index*2)); 3080 } 3081 } 3082 3083 /* 3084 * If there are still bits set in the VLVFB registers 3085 * for the VLAN ID indicated we need to see if the 3086 * caller is requesting that we clear the VFTA entry bit. 3087 * If the caller has requested that we clear the VFTA 3088 * entry bit but there are still pools/VFs using this VLAN 3089 * ID entry then ignore the request. We're not worried 3090 * about the case where we're turning the VFTA VLAN ID 3091 * entry bit on, only when requested to turn it off as 3092 * there may be multiple pools and/or VFs using the 3093 * VLAN ID entry. In that case we cannot clear the 3094 * VFTA bit until all pools/VFs using that VLAN ID have also 3095 * been cleared. This will be indicated by "bits" being 3096 * zero. 3097 */ 3098 if (bits) { 3099 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), 3100 (IXGBE_VLVF_VIEN | vlan)); 3101 if (!vlan_on) { 3102 /* someone wants to clear the vfta entry 3103 * but some pools/VFs are still using it. 3104 * Ignore it. */ 3105 vfta_changed = false; 3106 } 3107 } 3108 else 3109 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), 0); 3110 } 3111 3112 if (vfta_changed) 3113 IXGBE_WRITE_REG(hw, IXGBE_VFTA(regindex), vfta); 3114 3115 return 0; 3116 } 3117 3118 /** 3119 * ixgbe_clear_vfta_generic - Clear VLAN filter table 3120 * @hw: pointer to hardware structure 3121 * 3122 * Clears the VLAN filer table, and the VMDq index associated with the filter 3123 **/ 3124 s32 ixgbe_clear_vfta_generic(struct ixgbe_hw *hw) 3125 { 3126 u32 offset; 3127 3128 for (offset = 0; offset < hw->mac.vft_size; offset++) 3129 IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0); 3130 3131 for (offset = 0; offset < IXGBE_VLVF_ENTRIES; offset++) { 3132 IXGBE_WRITE_REG(hw, IXGBE_VLVF(offset), 0); 3133 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset*2), 0); 3134 IXGBE_WRITE_REG(hw, IXGBE_VLVFB((offset*2)+1), 0); 3135 } 3136 3137 return 0; 3138 } 3139 3140 /** 3141 * ixgbe_check_mac_link_generic - Determine link and speed status 3142 * @hw: pointer to hardware structure 3143 * @speed: pointer to link speed 3144 * @link_up: true when link is up 3145 * @link_up_wait_to_complete: bool used to wait for link up or not 3146 * 3147 * Reads the links register to determine if link is up and the current speed 3148 **/ 3149 s32 ixgbe_check_mac_link_generic(struct ixgbe_hw *hw, ixgbe_link_speed *speed, 3150 bool *link_up, bool link_up_wait_to_complete) 3151 { 3152 u32 links_reg, links_orig; 3153 u32 i; 3154 3155 /* clear the old state */ 3156 links_orig = IXGBE_READ_REG(hw, IXGBE_LINKS); 3157 3158 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS); 3159 3160 if (links_orig != links_reg) { 3161 hw_dbg(hw, "LINKS changed from %08X to %08X\n", 3162 links_orig, links_reg); 3163 } 3164 3165 if (link_up_wait_to_complete) { 3166 for (i = 0; i < IXGBE_LINK_UP_TIME; i++) { 3167 if (links_reg & IXGBE_LINKS_UP) { 3168 *link_up = true; 3169 break; 3170 } else { 3171 *link_up = false; 3172 } 3173 msleep(100); 3174 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS); 3175 } 3176 } else { 3177 if (links_reg & IXGBE_LINKS_UP) 3178 *link_up = true; 3179 else 3180 *link_up = false; 3181 } 3182 3183 if ((links_reg & IXGBE_LINKS_SPEED_82599) == 3184 IXGBE_LINKS_SPEED_10G_82599) 3185 *speed = IXGBE_LINK_SPEED_10GB_FULL; 3186 else if ((links_reg & IXGBE_LINKS_SPEED_82599) == 3187 IXGBE_LINKS_SPEED_1G_82599) 3188 *speed = IXGBE_LINK_SPEED_1GB_FULL; 3189 else if ((links_reg & IXGBE_LINKS_SPEED_82599) == 3190 IXGBE_LINKS_SPEED_100_82599) 3191 *speed = IXGBE_LINK_SPEED_100_FULL; 3192 else 3193 *speed = IXGBE_LINK_SPEED_UNKNOWN; 3194 3195 return 0; 3196 } 3197 3198 /** 3199 * ixgbe_get_wwn_prefix_generic - Get alternative WWNN/WWPN prefix from 3200 * the EEPROM 3201 * @hw: pointer to hardware structure 3202 * @wwnn_prefix: the alternative WWNN prefix 3203 * @wwpn_prefix: the alternative WWPN prefix 3204 * 3205 * This function will read the EEPROM from the alternative SAN MAC address 3206 * block to check the support for the alternative WWNN/WWPN prefix support. 3207 **/ 3208 s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix, 3209 u16 *wwpn_prefix) 3210 { 3211 u16 offset, caps; 3212 u16 alt_san_mac_blk_offset; 3213 3214 /* clear output first */ 3215 *wwnn_prefix = 0xFFFF; 3216 *wwpn_prefix = 0xFFFF; 3217 3218 /* check if alternative SAN MAC is supported */ 3219 hw->eeprom.ops.read(hw, IXGBE_ALT_SAN_MAC_ADDR_BLK_PTR, 3220 &alt_san_mac_blk_offset); 3221 3222 if ((alt_san_mac_blk_offset == 0) || 3223 (alt_san_mac_blk_offset == 0xFFFF)) 3224 goto wwn_prefix_out; 3225 3226 /* check capability in alternative san mac address block */ 3227 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_CAPS_OFFSET; 3228 hw->eeprom.ops.read(hw, offset, &caps); 3229 if (!(caps & IXGBE_ALT_SAN_MAC_ADDR_CAPS_ALTWWN)) 3230 goto wwn_prefix_out; 3231 3232 /* get the corresponding prefix for WWNN/WWPN */ 3233 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWNN_OFFSET; 3234 hw->eeprom.ops.read(hw, offset, wwnn_prefix); 3235 3236 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWPN_OFFSET; 3237 hw->eeprom.ops.read(hw, offset, wwpn_prefix); 3238 3239 wwn_prefix_out: 3240 return 0; 3241 } 3242 3243 /** 3244 * ixgbe_set_mac_anti_spoofing - Enable/Disable MAC anti-spoofing 3245 * @hw: pointer to hardware structure 3246 * @enable: enable or disable switch for anti-spoofing 3247 * @pf: Physical Function pool - do not enable anti-spoofing for the PF 3248 * 3249 **/ 3250 void ixgbe_set_mac_anti_spoofing(struct ixgbe_hw *hw, bool enable, int pf) 3251 { 3252 int j; 3253 int pf_target_reg = pf >> 3; 3254 int pf_target_shift = pf % 8; 3255 u32 pfvfspoof = 0; 3256 3257 if (hw->mac.type == ixgbe_mac_82598EB) 3258 return; 3259 3260 if (enable) 3261 pfvfspoof = IXGBE_SPOOF_MACAS_MASK; 3262 3263 /* 3264 * PFVFSPOOF register array is size 8 with 8 bits assigned to 3265 * MAC anti-spoof enables in each register array element. 3266 */ 3267 for (j = 0; j < pf_target_reg; j++) 3268 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), pfvfspoof); 3269 3270 /* 3271 * The PF should be allowed to spoof so that it can support 3272 * emulation mode NICs. Do not set the bits assigned to the PF 3273 */ 3274 pfvfspoof &= (1 << pf_target_shift) - 1; 3275 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), pfvfspoof); 3276 3277 /* 3278 * Remaining pools belong to the PF so they do not need to have 3279 * anti-spoofing enabled. 3280 */ 3281 for (j++; j < IXGBE_PFVFSPOOF_REG_COUNT; j++) 3282 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), 0); 3283 } 3284 3285 /** 3286 * ixgbe_set_vlan_anti_spoofing - Enable/Disable VLAN anti-spoofing 3287 * @hw: pointer to hardware structure 3288 * @enable: enable or disable switch for VLAN anti-spoofing 3289 * @pf: Virtual Function pool - VF Pool to set for VLAN anti-spoofing 3290 * 3291 **/ 3292 void ixgbe_set_vlan_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf) 3293 { 3294 int vf_target_reg = vf >> 3; 3295 int vf_target_shift = vf % 8 + IXGBE_SPOOF_VLANAS_SHIFT; 3296 u32 pfvfspoof; 3297 3298 if (hw->mac.type == ixgbe_mac_82598EB) 3299 return; 3300 3301 pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg)); 3302 if (enable) 3303 pfvfspoof |= (1 << vf_target_shift); 3304 else 3305 pfvfspoof &= ~(1 << vf_target_shift); 3306 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof); 3307 } 3308 3309 /** 3310 * ixgbe_get_device_caps_generic - Get additional device capabilities 3311 * @hw: pointer to hardware structure 3312 * @device_caps: the EEPROM word with the extra device capabilities 3313 * 3314 * This function will read the EEPROM location for the device capabilities, 3315 * and return the word through device_caps. 3316 **/ 3317 s32 ixgbe_get_device_caps_generic(struct ixgbe_hw *hw, u16 *device_caps) 3318 { 3319 hw->eeprom.ops.read(hw, IXGBE_DEVICE_CAPS, device_caps); 3320 3321 return 0; 3322 } 3323 3324 /** 3325 * ixgbe_set_rxpba_generic - Initialize RX packet buffer 3326 * @hw: pointer to hardware structure 3327 * @num_pb: number of packet buffers to allocate 3328 * @headroom: reserve n KB of headroom 3329 * @strategy: packet buffer allocation strategy 3330 **/ 3331 void ixgbe_set_rxpba_generic(struct ixgbe_hw *hw, 3332 int num_pb, 3333 u32 headroom, 3334 int strategy) 3335 { 3336 u32 pbsize = hw->mac.rx_pb_size; 3337 int i = 0; 3338 u32 rxpktsize, txpktsize, txpbthresh; 3339 3340 /* Reserve headroom */ 3341 pbsize -= headroom; 3342 3343 if (!num_pb) 3344 num_pb = 1; 3345 3346 /* Divide remaining packet buffer space amongst the number 3347 * of packet buffers requested using supplied strategy. 3348 */ 3349 switch (strategy) { 3350 case (PBA_STRATEGY_WEIGHTED): 3351 /* pba_80_48 strategy weight first half of packet buffer with 3352 * 5/8 of the packet buffer space. 3353 */ 3354 rxpktsize = ((pbsize * 5 * 2) / (num_pb * 8)); 3355 pbsize -= rxpktsize * (num_pb / 2); 3356 rxpktsize <<= IXGBE_RXPBSIZE_SHIFT; 3357 for (; i < (num_pb / 2); i++) 3358 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize); 3359 /* Fall through to configure remaining packet buffers */ 3360 case (PBA_STRATEGY_EQUAL): 3361 /* Divide the remaining Rx packet buffer evenly among the TCs */ 3362 rxpktsize = (pbsize / (num_pb - i)) << IXGBE_RXPBSIZE_SHIFT; 3363 for (; i < num_pb; i++) 3364 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize); 3365 break; 3366 default: 3367 break; 3368 } 3369 3370 /* 3371 * Setup Tx packet buffer and threshold equally for all TCs 3372 * TXPBTHRESH register is set in K so divide by 1024 and subtract 3373 * 10 since the largest packet we support is just over 9K. 3374 */ 3375 txpktsize = IXGBE_TXPBSIZE_MAX / num_pb; 3376 txpbthresh = (txpktsize / 1024) - IXGBE_TXPKT_SIZE_MAX; 3377 for (i = 0; i < num_pb; i++) { 3378 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize); 3379 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh); 3380 } 3381 3382 /* Clear unused TCs, if any, to zero buffer size*/ 3383 for (; i < IXGBE_MAX_PB; i++) { 3384 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0); 3385 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0); 3386 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0); 3387 } 3388 } 3389 3390 /** 3391 * ixgbe_calculate_checksum - Calculate checksum for buffer 3392 * @buffer: pointer to EEPROM 3393 * @length: size of EEPROM to calculate a checksum for 3394 * 3395 * Calculates the checksum for some buffer on a specified length. The 3396 * checksum calculated is returned. 3397 **/ 3398 static u8 ixgbe_calculate_checksum(u8 *buffer, u32 length) 3399 { 3400 u32 i; 3401 u8 sum = 0; 3402 3403 if (!buffer) 3404 return 0; 3405 3406 for (i = 0; i < length; i++) 3407 sum += buffer[i]; 3408 3409 return (u8) (0 - sum); 3410 } 3411 3412 /** 3413 * ixgbe_host_interface_command - Issue command to manageability block 3414 * @hw: pointer to the HW structure 3415 * @buffer: contains the command to write and where the return status will 3416 * be placed 3417 * @length: length of buffer, must be multiple of 4 bytes 3418 * 3419 * Communicates with the manageability block. On success return 0 3420 * else return IXGBE_ERR_HOST_INTERFACE_COMMAND. 3421 **/ 3422 static s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, u32 *buffer, 3423 u32 length) 3424 { 3425 u32 hicr, i, bi; 3426 u32 hdr_size = sizeof(struct ixgbe_hic_hdr); 3427 u8 buf_len, dword_len; 3428 3429 s32 ret_val = 0; 3430 3431 if (length == 0 || length & 0x3 || 3432 length > IXGBE_HI_MAX_BLOCK_BYTE_LENGTH) { 3433 hw_dbg(hw, "Buffer length failure.\n"); 3434 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND; 3435 goto out; 3436 } 3437 3438 /* Check that the host interface is enabled. */ 3439 hicr = IXGBE_READ_REG(hw, IXGBE_HICR); 3440 if ((hicr & IXGBE_HICR_EN) == 0) { 3441 hw_dbg(hw, "IXGBE_HOST_EN bit disabled.\n"); 3442 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND; 3443 goto out; 3444 } 3445 3446 /* Calculate length in DWORDs */ 3447 dword_len = length >> 2; 3448 3449 /* 3450 * The device driver writes the relevant command block 3451 * into the ram area. 3452 */ 3453 for (i = 0; i < dword_len; i++) 3454 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_FLEX_MNG, 3455 i, cpu_to_le32(buffer[i])); 3456 3457 /* Setting this bit tells the ARC that a new command is pending. */ 3458 IXGBE_WRITE_REG(hw, IXGBE_HICR, hicr | IXGBE_HICR_C); 3459 3460 for (i = 0; i < IXGBE_HI_COMMAND_TIMEOUT; i++) { 3461 hicr = IXGBE_READ_REG(hw, IXGBE_HICR); 3462 if (!(hicr & IXGBE_HICR_C)) 3463 break; 3464 usleep_range(1000, 2000); 3465 } 3466 3467 /* Check command successful completion. */ 3468 if (i == IXGBE_HI_COMMAND_TIMEOUT || 3469 (!(IXGBE_READ_REG(hw, IXGBE_HICR) & IXGBE_HICR_SV))) { 3470 hw_dbg(hw, "Command has failed with no status valid.\n"); 3471 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND; 3472 goto out; 3473 } 3474 3475 /* Calculate length in DWORDs */ 3476 dword_len = hdr_size >> 2; 3477 3478 /* first pull in the header so we know the buffer length */ 3479 for (bi = 0; bi < dword_len; bi++) { 3480 buffer[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi); 3481 le32_to_cpus(&buffer[bi]); 3482 } 3483 3484 /* If there is any thing in data position pull it in */ 3485 buf_len = ((struct ixgbe_hic_hdr *)buffer)->buf_len; 3486 if (buf_len == 0) 3487 goto out; 3488 3489 if (length < (buf_len + hdr_size)) { 3490 hw_dbg(hw, "Buffer not large enough for reply message.\n"); 3491 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND; 3492 goto out; 3493 } 3494 3495 /* Calculate length in DWORDs, add 3 for odd lengths */ 3496 dword_len = (buf_len + 3) >> 2; 3497 3498 /* Pull in the rest of the buffer (bi is where we left off)*/ 3499 for (; bi <= dword_len; bi++) { 3500 buffer[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi); 3501 le32_to_cpus(&buffer[bi]); 3502 } 3503 3504 out: 3505 return ret_val; 3506 } 3507 3508 /** 3509 * ixgbe_set_fw_drv_ver_generic - Sends driver version to firmware 3510 * @hw: pointer to the HW structure 3511 * @maj: driver version major number 3512 * @min: driver version minor number 3513 * @build: driver version build number 3514 * @sub: driver version sub build number 3515 * 3516 * Sends driver version number to firmware through the manageability 3517 * block. On success return 0 3518 * else returns IXGBE_ERR_SWFW_SYNC when encountering an error acquiring 3519 * semaphore or IXGBE_ERR_HOST_INTERFACE_COMMAND when command fails. 3520 **/ 3521 s32 ixgbe_set_fw_drv_ver_generic(struct ixgbe_hw *hw, u8 maj, u8 min, 3522 u8 build, u8 sub) 3523 { 3524 struct ixgbe_hic_drv_info fw_cmd; 3525 int i; 3526 s32 ret_val = 0; 3527 3528 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM) != 0) { 3529 ret_val = IXGBE_ERR_SWFW_SYNC; 3530 goto out; 3531 } 3532 3533 fw_cmd.hdr.cmd = FW_CEM_CMD_DRIVER_INFO; 3534 fw_cmd.hdr.buf_len = FW_CEM_CMD_DRIVER_INFO_LEN; 3535 fw_cmd.hdr.cmd_or_resp.cmd_resv = FW_CEM_CMD_RESERVED; 3536 fw_cmd.port_num = (u8)hw->bus.func; 3537 fw_cmd.ver_maj = maj; 3538 fw_cmd.ver_min = min; 3539 fw_cmd.ver_build = build; 3540 fw_cmd.ver_sub = sub; 3541 fw_cmd.hdr.checksum = 0; 3542 fw_cmd.hdr.checksum = ixgbe_calculate_checksum((u8 *)&fw_cmd, 3543 (FW_CEM_HDR_LEN + fw_cmd.hdr.buf_len)); 3544 fw_cmd.pad = 0; 3545 fw_cmd.pad2 = 0; 3546 3547 for (i = 0; i <= FW_CEM_MAX_RETRIES; i++) { 3548 ret_val = ixgbe_host_interface_command(hw, (u32 *)&fw_cmd, 3549 sizeof(fw_cmd)); 3550 if (ret_val != 0) 3551 continue; 3552 3553 if (fw_cmd.hdr.cmd_or_resp.ret_status == 3554 FW_CEM_RESP_STATUS_SUCCESS) 3555 ret_val = 0; 3556 else 3557 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND; 3558 3559 break; 3560 } 3561 3562 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM); 3563 out: 3564 return ret_val; 3565 } 3566 3567 /** 3568 * ixgbe_clear_tx_pending - Clear pending TX work from the PCIe fifo 3569 * @hw: pointer to the hardware structure 3570 * 3571 * The 82599 and x540 MACs can experience issues if TX work is still pending 3572 * when a reset occurs. This function prevents this by flushing the PCIe 3573 * buffers on the system. 3574 **/ 3575 void ixgbe_clear_tx_pending(struct ixgbe_hw *hw) 3576 { 3577 u32 gcr_ext, hlreg0; 3578 3579 /* 3580 * If double reset is not requested then all transactions should 3581 * already be clear and as such there is no work to do 3582 */ 3583 if (!(hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED)) 3584 return; 3585 3586 /* 3587 * Set loopback enable to prevent any transmits from being sent 3588 * should the link come up. This assumes that the RXCTRL.RXEN bit 3589 * has already been cleared. 3590 */ 3591 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0); 3592 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0 | IXGBE_HLREG0_LPBK); 3593 3594 /* initiate cleaning flow for buffers in the PCIe transaction layer */ 3595 gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT); 3596 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 3597 gcr_ext | IXGBE_GCR_EXT_BUFFERS_CLEAR); 3598 3599 /* Flush all writes and allow 20usec for all transactions to clear */ 3600 IXGBE_WRITE_FLUSH(hw); 3601 udelay(20); 3602 3603 /* restore previous register values */ 3604 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext); 3605 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0); 3606 } 3607 3608 static const u8 ixgbe_emc_temp_data[4] = { 3609 IXGBE_EMC_INTERNAL_DATA, 3610 IXGBE_EMC_DIODE1_DATA, 3611 IXGBE_EMC_DIODE2_DATA, 3612 IXGBE_EMC_DIODE3_DATA 3613 }; 3614 static const u8 ixgbe_emc_therm_limit[4] = { 3615 IXGBE_EMC_INTERNAL_THERM_LIMIT, 3616 IXGBE_EMC_DIODE1_THERM_LIMIT, 3617 IXGBE_EMC_DIODE2_THERM_LIMIT, 3618 IXGBE_EMC_DIODE3_THERM_LIMIT 3619 }; 3620 3621 /** 3622 * ixgbe_get_ets_data - Extracts the ETS bit data 3623 * @hw: pointer to hardware structure 3624 * @ets_cfg: extected ETS data 3625 * @ets_offset: offset of ETS data 3626 * 3627 * Returns error code. 3628 **/ 3629 static s32 ixgbe_get_ets_data(struct ixgbe_hw *hw, u16 *ets_cfg, 3630 u16 *ets_offset) 3631 { 3632 s32 status = 0; 3633 3634 status = hw->eeprom.ops.read(hw, IXGBE_ETS_CFG, ets_offset); 3635 if (status) 3636 goto out; 3637 3638 if ((*ets_offset == 0x0000) || (*ets_offset == 0xFFFF)) { 3639 status = IXGBE_NOT_IMPLEMENTED; 3640 goto out; 3641 } 3642 3643 status = hw->eeprom.ops.read(hw, *ets_offset, ets_cfg); 3644 if (status) 3645 goto out; 3646 3647 if ((*ets_cfg & IXGBE_ETS_TYPE_MASK) != IXGBE_ETS_TYPE_EMC_SHIFTED) { 3648 status = IXGBE_NOT_IMPLEMENTED; 3649 goto out; 3650 } 3651 3652 out: 3653 return status; 3654 } 3655 3656 /** 3657 * ixgbe_get_thermal_sensor_data - Gathers thermal sensor data 3658 * @hw: pointer to hardware structure 3659 * 3660 * Returns the thermal sensor data structure 3661 **/ 3662 s32 ixgbe_get_thermal_sensor_data_generic(struct ixgbe_hw *hw) 3663 { 3664 s32 status = 0; 3665 u16 ets_offset; 3666 u16 ets_cfg; 3667 u16 ets_sensor; 3668 u8 num_sensors; 3669 u8 i; 3670 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data; 3671 3672 /* Only support thermal sensors attached to physical port 0 */ 3673 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) { 3674 status = IXGBE_NOT_IMPLEMENTED; 3675 goto out; 3676 } 3677 3678 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset); 3679 if (status) 3680 goto out; 3681 3682 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK); 3683 if (num_sensors > IXGBE_MAX_SENSORS) 3684 num_sensors = IXGBE_MAX_SENSORS; 3685 3686 for (i = 0; i < num_sensors; i++) { 3687 u8 sensor_index; 3688 u8 sensor_location; 3689 3690 status = hw->eeprom.ops.read(hw, (ets_offset + 1 + i), 3691 &ets_sensor); 3692 if (status) 3693 goto out; 3694 3695 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >> 3696 IXGBE_ETS_DATA_INDEX_SHIFT); 3697 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >> 3698 IXGBE_ETS_DATA_LOC_SHIFT); 3699 3700 if (sensor_location != 0) { 3701 status = hw->phy.ops.read_i2c_byte(hw, 3702 ixgbe_emc_temp_data[sensor_index], 3703 IXGBE_I2C_THERMAL_SENSOR_ADDR, 3704 &data->sensor[i].temp); 3705 if (status) 3706 goto out; 3707 } 3708 } 3709 out: 3710 return status; 3711 } 3712 3713 /** 3714 * ixgbe_init_thermal_sensor_thresh_generic - Inits thermal sensor thresholds 3715 * @hw: pointer to hardware structure 3716 * 3717 * Inits the thermal sensor thresholds according to the NVM map 3718 * and save off the threshold and location values into mac.thermal_sensor_data 3719 **/ 3720 s32 ixgbe_init_thermal_sensor_thresh_generic(struct ixgbe_hw *hw) 3721 { 3722 s32 status = 0; 3723 u16 ets_offset; 3724 u16 ets_cfg; 3725 u16 ets_sensor; 3726 u8 low_thresh_delta; 3727 u8 num_sensors; 3728 u8 therm_limit; 3729 u8 i; 3730 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data; 3731 3732 memset(data, 0, sizeof(struct ixgbe_thermal_sensor_data)); 3733 3734 /* Only support thermal sensors attached to physical port 0 */ 3735 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) { 3736 status = IXGBE_NOT_IMPLEMENTED; 3737 goto out; 3738 } 3739 3740 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset); 3741 if (status) 3742 goto out; 3743 3744 low_thresh_delta = ((ets_cfg & IXGBE_ETS_LTHRES_DELTA_MASK) >> 3745 IXGBE_ETS_LTHRES_DELTA_SHIFT); 3746 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK); 3747 if (num_sensors > IXGBE_MAX_SENSORS) 3748 num_sensors = IXGBE_MAX_SENSORS; 3749 3750 for (i = 0; i < num_sensors; i++) { 3751 u8 sensor_index; 3752 u8 sensor_location; 3753 3754 hw->eeprom.ops.read(hw, (ets_offset + 1 + i), &ets_sensor); 3755 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >> 3756 IXGBE_ETS_DATA_INDEX_SHIFT); 3757 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >> 3758 IXGBE_ETS_DATA_LOC_SHIFT); 3759 therm_limit = ets_sensor & IXGBE_ETS_DATA_HTHRESH_MASK; 3760 3761 hw->phy.ops.write_i2c_byte(hw, 3762 ixgbe_emc_therm_limit[sensor_index], 3763 IXGBE_I2C_THERMAL_SENSOR_ADDR, therm_limit); 3764 3765 if (sensor_location == 0) 3766 continue; 3767 3768 data->sensor[i].location = sensor_location; 3769 data->sensor[i].caution_thresh = therm_limit; 3770 data->sensor[i].max_op_thresh = therm_limit - low_thresh_delta; 3771 } 3772 out: 3773 return status; 3774 } 3775 3776