sys/dev/ixgbe/ixgbe_x540.c

   1 /******************************************************************************
   2
   3   Copyright (c) 2001-2015, Intel Corporation
   4   All rights reserved.
   5
   6   Redistribution and use in source and binary forms, with or without
   7   modification, are permitted provided that the following conditions are met:
   8
   9    1. Redistributions of source code must retain the above copyright notice,
  10       this list of conditions and the following disclaimer.
  11
  12    2. Redistributions in binary form must reproduce the above copyright
  13       notice, this list of conditions and the following disclaimer in the
  14       documentation and/or other materials provided with the distribution.
  15
  16    3. Neither the name of the Intel Corporation nor the names of its
  17       contributors may be used to endorse or promote products derived from
  18       this software without specific prior written permission.
  19
  20   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  21   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23   ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  24   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30   POSSIBILITY OF SUCH DAMAGE.
  31
  32 ******************************************************************************/
  33 /*$FreeBSD$*/
  34
  35 #include "ixgbe_x540.h"
  36 #include "ixgbe_type.h"
  37 #include "ixgbe_api.h"
  38 #include "ixgbe_common.h"
  39 #include "ixgbe_phy.h"
  40
  41 #define IXGBE_X540_MAX_TX_QUEUES        128
  42 #define IXGBE_X540_MAX_RX_QUEUES        128
  43 #define IXGBE_X540_RAR_ENTRIES          128
  44 #define IXGBE_X540_MC_TBL_SIZE          128
  45 #define IXGBE_X540_VFT_TBL_SIZE         128
  46 #define IXGBE_X540_RX_PB_SIZE           384
  47
  48 static s32 ixgbe_poll_flash_update_done_X540(struct ixgbe_hw *hw);
  49 static s32 ixgbe_get_swfw_sync_semaphore(struct ixgbe_hw *hw);
  50 static void ixgbe_release_swfw_sync_semaphore(struct ixgbe_hw *hw);
  51
  52 /**
  53  *  ixgbe_init_ops_X540 - Inits func ptrs and MAC type
  54  *  @hw: pointer to hardware structure
  55  *
  56  *  Initialize the function pointers and assign the MAC type for X540.
  57  *  Does not touch the hardware.
  58  **/
  59 s32 ixgbe_init_ops_X540(struct ixgbe_hw *hw)
  60 {
  61         struct ixgbe_mac_info *mac = &hw->mac;
  62         struct ixgbe_phy_info *phy = &hw->phy;
  63         struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
  64         s32 ret_val;
  65
  66         DEBUGFUNC("ixgbe_init_ops_X540");
  67
  68         ret_val = ixgbe_init_phy_ops_generic(hw);
  69         ret_val = ixgbe_init_ops_generic(hw);
  70
  71
  72         /* EEPROM */
  73         eeprom->ops.init_params = ixgbe_init_eeprom_params_X540;
  74         eeprom->ops.read = ixgbe_read_eerd_X540;
  75         eeprom->ops.read_buffer = ixgbe_read_eerd_buffer_X540;
  76         eeprom->ops.write = ixgbe_write_eewr_X540;
  77         eeprom->ops.write_buffer = ixgbe_write_eewr_buffer_X540;
  78         eeprom->ops.update_checksum = ixgbe_update_eeprom_checksum_X540;
  79         eeprom->ops.validate_checksum = ixgbe_validate_eeprom_checksum_X540;
  80         eeprom->ops.calc_checksum = ixgbe_calc_eeprom_checksum_X540;
  81
  82         /* PHY */
  83         phy->ops.init = ixgbe_init_phy_ops_generic;
  84         phy->ops.reset = NULL;
  85         phy->ops.set_phy_power = ixgbe_set_copper_phy_power;
  86
  87         /* MAC */
  88         mac->ops.reset_hw = ixgbe_reset_hw_X540;
  89         mac->ops.enable_relaxed_ordering = ixgbe_enable_relaxed_ordering_gen2;
  90         mac->ops.get_media_type = ixgbe_get_media_type_X540;
  91         mac->ops.get_supported_physical_layer =
  92                                     ixgbe_get_supported_physical_layer_X540;
  93         mac->ops.read_analog_reg8 = NULL;
  94         mac->ops.write_analog_reg8 = NULL;
  95         mac->ops.start_hw = ixgbe_start_hw_X540;
  96         mac->ops.get_san_mac_addr = ixgbe_get_san_mac_addr_generic;
  97         mac->ops.set_san_mac_addr = ixgbe_set_san_mac_addr_generic;
  98         mac->ops.get_device_caps = ixgbe_get_device_caps_generic;
  99         mac->ops.get_wwn_prefix = ixgbe_get_wwn_prefix_generic;
 100         mac->ops.get_fcoe_boot_status = ixgbe_get_fcoe_boot_status_generic;
 101         mac->ops.acquire_swfw_sync = ixgbe_acquire_swfw_sync_X540;
 102         mac->ops.release_swfw_sync = ixgbe_release_swfw_sync_X540;
 103         mac->ops.disable_sec_rx_path = ixgbe_disable_sec_rx_path_generic;
 104         mac->ops.enable_sec_rx_path = ixgbe_enable_sec_rx_path_generic;
 105
 106         /* RAR, Multicast, VLAN */
 107         mac->ops.set_vmdq = ixgbe_set_vmdq_generic;
 108         mac->ops.set_vmdq_san_mac = ixgbe_set_vmdq_san_mac_generic;
 109         mac->ops.clear_vmdq = ixgbe_clear_vmdq_generic;
 110         mac->ops.insert_mac_addr = ixgbe_insert_mac_addr_generic;
 111         mac->rar_highwater = 1;
 112         mac->ops.set_vfta = ixgbe_set_vfta_generic;
 113         mac->ops.set_vlvf = ixgbe_set_vlvf_generic;
 114         mac->ops.clear_vfta = ixgbe_clear_vfta_generic;
 115         mac->ops.init_uta_tables = ixgbe_init_uta_tables_generic;
 116         mac->ops.set_mac_anti_spoofing = ixgbe_set_mac_anti_spoofing;
 117         mac->ops.set_vlan_anti_spoofing = ixgbe_set_vlan_anti_spoofing;
 118
 119         /* Link */
 120         mac->ops.get_link_capabilities =
 121                                 ixgbe_get_copper_link_capabilities_generic;
 122         mac->ops.setup_link = ixgbe_setup_mac_link_X540;
 123         mac->ops.setup_rxpba = ixgbe_set_rxpba_generic;
 124         mac->ops.check_link = ixgbe_check_mac_link_generic;
 125
 126
 127         mac->mcft_size          = IXGBE_X540_MC_TBL_SIZE;
 128         mac->vft_size           = IXGBE_X540_VFT_TBL_SIZE;
 129         mac->num_rar_entries    = IXGBE_X540_RAR_ENTRIES;
 130         mac->rx_pb_size         = IXGBE_X540_RX_PB_SIZE;
 131         mac->max_rx_queues      = IXGBE_X540_MAX_RX_QUEUES;
 132         mac->max_tx_queues      = IXGBE_X540_MAX_TX_QUEUES;
 133         mac->max_msix_vectors   = ixgbe_get_pcie_msix_count_generic(hw);
 134
 135         /*
 136          * FWSM register
 137          * ARC supported; valid only if manageability features are
 138          * enabled.
 139          */
 140         mac->arc_subsystem_valid = !!(IXGBE_READ_REG(hw, IXGBE_FWSM_BY_MAC(hw))
 141                                      & IXGBE_FWSM_MODE_MASK);
 142
 143         hw->mbx.ops.init_params = ixgbe_init_mbx_params_pf;
 144
 145         /* LEDs */
 146         mac->ops.blink_led_start = ixgbe_blink_led_start_X540;
 147         mac->ops.blink_led_stop = ixgbe_blink_led_stop_X540;
 148
 149         /* Manageability interface */
 150         mac->ops.set_fw_drv_ver = ixgbe_set_fw_drv_ver_generic;
 151
 152         mac->ops.get_rtrup2tc = ixgbe_dcb_get_rtrup2tc_generic;
 153
 154         return ret_val;
 155 }
 156
 157 /**
 158  *  ixgbe_get_link_capabilities_X540 - Determines link capabilities
 159  *  @hw: pointer to hardware structure
 160  *  @speed: pointer to link speed
 161  *  @autoneg: TRUE when autoneg or autotry is enabled
 162  *
 163  *  Determines the link capabilities by reading the AUTOC register.
 164  **/
 165 s32 ixgbe_get_link_capabilities_X540(struct ixgbe_hw *hw,
 166                                      ixgbe_link_speed *speed,
 167                                      bool *autoneg)
 168 {
 169         ixgbe_get_copper_link_capabilities_generic(hw, speed, autoneg);
 170
 171         return IXGBE_SUCCESS;
 172 }
 173
 174 /**
 175  *  ixgbe_get_media_type_X540 - Get media type
 176  *  @hw: pointer to hardware structure
 177  *
 178  *  Returns the media type (fiber, copper, backplane)
 179  **/
 180 enum ixgbe_media_type ixgbe_get_media_type_X540(struct ixgbe_hw *hw)
 181 {
 182         UNREFERENCED_1PARAMETER(hw);
 183         return ixgbe_media_type_copper;
 184 }
 185
 186 /**
 187  *  ixgbe_setup_mac_link_X540 - Sets the auto advertised capabilities
 188  *  @hw: pointer to hardware structure
 189  *  @speed: new link speed
 190  *  @autoneg_wait_to_complete: TRUE when waiting for completion is needed
 191  **/
 192 s32 ixgbe_setup_mac_link_X540(struct ixgbe_hw *hw,
 193                               ixgbe_link_speed speed,
 194                               bool autoneg_wait_to_complete)
 195 {
 196         DEBUGFUNC("ixgbe_setup_mac_link_X540");
 197         return hw->phy.ops.setup_link_speed(hw, speed, autoneg_wait_to_complete);
 198 }
 199
 200 /**
 201  *  ixgbe_reset_hw_X540 - Perform hardware reset
 202  *  @hw: pointer to hardware structure
 203  *
 204  *  Resets the hardware by resetting the transmit and receive units, masks
 205  *  and clears all interrupts, and perform a reset.
 206  **/
 207 s32 ixgbe_reset_hw_X540(struct ixgbe_hw *hw)
 208 {
 209         s32 status;
 210         u32 ctrl, i;
 211
 212         DEBUGFUNC("ixgbe_reset_hw_X540");
 213
 214         /* Call adapter stop to disable tx/rx and clear interrupts */
 215         status = hw->mac.ops.stop_adapter(hw);
 216         if (status != IXGBE_SUCCESS)
 217                 goto reset_hw_out;
 218
 219         /* flush pending Tx transactions */
 220         ixgbe_clear_tx_pending(hw);
 221
 222 mac_reset_top:
 223         ctrl = IXGBE_CTRL_RST;
 224         ctrl |= IXGBE_READ_REG(hw, IXGBE_CTRL);
 225         IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
 226         IXGBE_WRITE_FLUSH(hw);
 227
 228         /* Poll for reset bit to self-clear indicating reset is complete */
 229         for (i = 0; i < 10; i++) {
 230                 usec_delay(1);
 231                 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
 232                 if (!(ctrl & IXGBE_CTRL_RST_MASK))
 233                         break;
 234         }
 235
 236         if (ctrl & IXGBE_CTRL_RST_MASK) {
 237                 status = IXGBE_ERR_RESET_FAILED;
 238                 ERROR_REPORT1(IXGBE_ERROR_POLLING,
 239                              "Reset polling failed to complete.\n");
 240         }
 241         msec_delay(100);
 242
 243         /*
 244          * Double resets are required for recovery from certain error
 245          * conditions.  Between resets, it is necessary to stall to allow time
 246          * for any pending HW events to complete.
 247          */
 248         if (hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED) {
 249                 hw->mac.flags &= ~IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
 250                 goto mac_reset_top;
 251         }
 252
 253         /* Set the Rx packet buffer size. */
 254         IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(0), 384 << IXGBE_RXPBSIZE_SHIFT);
 255
 256         /* Store the permanent mac address */
 257         hw->mac.ops.get_mac_addr(hw, hw->mac.perm_addr);
 258
 259         /*
 260          * Store MAC address from RAR0, clear receive address registers, and
 261          * clear the multicast table.  Also reset num_rar_entries to 128,
 262          * since we modify this value when programming the SAN MAC address.
 263          */
 264         hw->mac.num_rar_entries = 128;
 265         hw->mac.ops.init_rx_addrs(hw);
 266
 267         /* Store the permanent SAN mac address */
 268         hw->mac.ops.get_san_mac_addr(hw, hw->mac.san_addr);
 269
 270         /* Add the SAN MAC address to the RAR only if it's a valid address */
 271         if (ixgbe_validate_mac_addr(hw->mac.san_addr) == 0) {
 272                 hw->mac.ops.set_rar(hw, hw->mac.num_rar_entries - 1,
 273                                     hw->mac.san_addr, 0, IXGBE_RAH_AV);
 274
 275                 /* Save the SAN MAC RAR index */
 276                 hw->mac.san_mac_rar_index = hw->mac.num_rar_entries - 1;
 277
 278                 /* Reserve the last RAR for the SAN MAC address */
 279                 hw->mac.num_rar_entries--;
 280         }
 281
 282         /* Store the alternative WWNN/WWPN prefix */
 283         hw->mac.ops.get_wwn_prefix(hw, &hw->mac.wwnn_prefix,
 284                                    &hw->mac.wwpn_prefix);
 285
 286 reset_hw_out:
 287         return status;
 288 }
 289
 290 /**
 291  *  ixgbe_start_hw_X540 - Prepare hardware for Tx/Rx
 292  *  @hw: pointer to hardware structure
 293  *
 294  *  Starts the hardware using the generic start_hw function
 295  *  and the generation start_hw function.
 296  *  Then performs revision-specific operations, if any.
 297  **/
 298 s32 ixgbe_start_hw_X540(struct ixgbe_hw *hw)
 299 {
 300         s32 ret_val = IXGBE_SUCCESS;
 301
 302         DEBUGFUNC("ixgbe_start_hw_X540");
 303
 304         ret_val = ixgbe_start_hw_generic(hw);
 305         if (ret_val != IXGBE_SUCCESS)
 306                 goto out;
 307
 308         ret_val = ixgbe_start_hw_gen2(hw);
 309
 310 out:
 311         return ret_val;
 312 }
 313
 314 /**
 315  *  ixgbe_get_supported_physical_layer_X540 - Returns physical layer type
 316  *  @hw: pointer to hardware structure
 317  *
 318  *  Determines physical layer capabilities of the current configuration.
 319  **/
 320 u32 ixgbe_get_supported_physical_layer_X540(struct ixgbe_hw *hw)
 321 {
 322         u32 physical_layer = IXGBE_PHYSICAL_LAYER_UNKNOWN;
 323         u16 ext_ability = 0;
 324
 325         DEBUGFUNC("ixgbe_get_supported_physical_layer_X540");
 326
 327         hw->phy.ops.read_reg(hw, IXGBE_MDIO_PHY_EXT_ABILITY,
 328         IXGBE_MDIO_PMA_PMD_DEV_TYPE, &ext_ability);
 329         if (ext_ability & IXGBE_MDIO_PHY_10GBASET_ABILITY)
 330                 physical_layer |= IXGBE_PHYSICAL_LAYER_10GBASE_T;
 331         if (ext_ability & IXGBE_MDIO_PHY_1000BASET_ABILITY)
 332                 physical_layer |= IXGBE_PHYSICAL_LAYER_1000BASE_T;
 333         if (ext_ability & IXGBE_MDIO_PHY_100BASETX_ABILITY)
 334                 physical_layer |= IXGBE_PHYSICAL_LAYER_100BASE_TX;
 335
 336         return physical_layer;
 337 }
 338
 339 /**
 340  *  ixgbe_init_eeprom_params_X540 - Initialize EEPROM params
 341  *  @hw: pointer to hardware structure
 342  *
 343  *  Initializes the EEPROM parameters ixgbe_eeprom_info within the
 344  *  ixgbe_hw struct in order to set up EEPROM access.
 345  **/
 346 s32 ixgbe_init_eeprom_params_X540(struct ixgbe_hw *hw)
 347 {
 348         struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
 349         u32 eec;
 350         u16 eeprom_size;
 351
 352         DEBUGFUNC("ixgbe_init_eeprom_params_X540");
 353
 354         if (eeprom->type == ixgbe_eeprom_uninitialized) {
 355                 eeprom->semaphore_delay = 10;
 356                 eeprom->type = ixgbe_flash;
 357
 358                 eec = IXGBE_READ_REG(hw, IXGBE_EEC_BY_MAC(hw));
 359                 eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >>
 360                                     IXGBE_EEC_SIZE_SHIFT);
 361                 eeprom->word_size = 1 << (eeprom_size +
 362                                           IXGBE_EEPROM_WORD_SIZE_SHIFT);
 363
 364                 DEBUGOUT2("Eeprom params: type = %d, size = %d\n",
 365                           eeprom->type, eeprom->word_size);
 366         }
 367
 368         return IXGBE_SUCCESS;
 369 }
 370
 371 /**
 372  *  ixgbe_read_eerd_X540- Read EEPROM word using EERD
 373  *  @hw: pointer to hardware structure
 374  *  @offset: offset of  word in the EEPROM to read
 375  *  @data: word read from the EEPROM
 376  *
 377  *  Reads a 16 bit word from the EEPROM using the EERD register.
 378  **/
 379 s32 ixgbe_read_eerd_X540(struct ixgbe_hw *hw, u16 offset, u16 *data)
 380 {
 381         s32 status = IXGBE_SUCCESS;
 382
 383         DEBUGFUNC("ixgbe_read_eerd_X540");
 384         if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
 385             IXGBE_SUCCESS) {
 386                 status = ixgbe_read_eerd_generic(hw, offset, data);
 387                 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
 388         } else {
 389                 status = IXGBE_ERR_SWFW_SYNC;
 390         }
 391
 392         return status;
 393 }
 394
 395 /**
 396  *  ixgbe_read_eerd_buffer_X540- Read EEPROM word(s) using EERD
 397  *  @hw: pointer to hardware structure
 398  *  @offset: offset of  word in the EEPROM to read
 399  *  @words: number of words
 400  *  @data: word(s) read from the EEPROM
 401  *
 402  *  Reads a 16 bit word(s) from the EEPROM using the EERD register.
 403  **/
 404 s32 ixgbe_read_eerd_buffer_X540(struct ixgbe_hw *hw,
 405                                 u16 offset, u16 words, u16 *data)
 406 {
 407         s32 status = IXGBE_SUCCESS;
 408
 409         DEBUGFUNC("ixgbe_read_eerd_buffer_X540");
 410         if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
 411             IXGBE_SUCCESS) {
 412                 status = ixgbe_read_eerd_buffer_generic(hw, offset,
 413                                                         words, data);
 414                 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
 415         } else {
 416                 status = IXGBE_ERR_SWFW_SYNC;
 417         }
 418
 419         return status;
 420 }
 421
 422 /**
 423  *  ixgbe_write_eewr_X540 - Write EEPROM word using EEWR
 424  *  @hw: pointer to hardware structure
 425  *  @offset: offset of  word in the EEPROM to write
 426  *  @data: word write to the EEPROM
 427  *
 428  *  Write a 16 bit word to the EEPROM using the EEWR register.
 429  **/
 430 s32 ixgbe_write_eewr_X540(struct ixgbe_hw *hw, u16 offset, u16 data)
 431 {
 432         s32 status = IXGBE_SUCCESS;
 433
 434         DEBUGFUNC("ixgbe_write_eewr_X540");
 435         if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
 436             IXGBE_SUCCESS) {
 437                 status = ixgbe_write_eewr_generic(hw, offset, data);
 438                 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
 439         } else {
 440                 status = IXGBE_ERR_SWFW_SYNC;
 441         }
 442
 443         return status;
 444 }
 445
 446 /**
 447  *  ixgbe_write_eewr_buffer_X540 - Write EEPROM word(s) using EEWR
 448  *  @hw: pointer to hardware structure
 449  *  @offset: offset of  word in the EEPROM to write
 450  *  @words: number of words
 451  *  @data: word(s) write to the EEPROM
 452  *
 453  *  Write a 16 bit word(s) to the EEPROM using the EEWR register.
 454  **/
 455 s32 ixgbe_write_eewr_buffer_X540(struct ixgbe_hw *hw,
 456                                  u16 offset, u16 words, u16 *data)
 457 {
 458         s32 status = IXGBE_SUCCESS;
 459
 460         DEBUGFUNC("ixgbe_write_eewr_buffer_X540");
 461         if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
 462             IXGBE_SUCCESS) {
 463                 status = ixgbe_write_eewr_buffer_generic(hw, offset,
 464                                                          words, data);
 465                 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
 466         } else {
 467                 status = IXGBE_ERR_SWFW_SYNC;
 468         }
 469
 470         return status;
 471 }
 472
 473 /**
 474  *  ixgbe_calc_eeprom_checksum_X540 - Calculates and returns the checksum
 475  *
 476  *  This function does not use synchronization for EERD and EEWR. It can
 477  *  be used internally by function which utilize ixgbe_acquire_swfw_sync_X540.
 478  *
 479  *  @hw: pointer to hardware structure
 480  *
 481  *  Returns a negative error code on error, or the 16-bit checksum
 482  **/
 483 s32 ixgbe_calc_eeprom_checksum_X540(struct ixgbe_hw *hw)
 484 {
 485         u16 i, j;
 486         u16 checksum = 0;
 487         u16 length = 0;
 488         u16 pointer = 0;
 489         u16 word = 0;
 490         u16 checksum_last_word = IXGBE_EEPROM_CHECKSUM;
 491         u16 ptr_start = IXGBE_PCIE_ANALOG_PTR;
 492
 493         /* Do not use hw->eeprom.ops.read because we do not want to take
 494          * the synchronization semaphores here. Instead use
 495          * ixgbe_read_eerd_generic
 496          */
 497
 498         DEBUGFUNC("ixgbe_calc_eeprom_checksum_X540");
 499
 500         /* Include 0x0-0x3F in the checksum */
 501         for (i = 0; i <= checksum_last_word; i++) {
 502                 if (ixgbe_read_eerd_generic(hw, i, &word)) {
 503                         DEBUGOUT("EEPROM read failed\n");
 504                         return IXGBE_ERR_EEPROM;
 505                 }
 506                 if (i != IXGBE_EEPROM_CHECKSUM)
 507                         checksum += word;
 508         }
 509
 510         /* Include all data from pointers 0x3, 0x6-0xE.  This excludes the
 511          * FW, PHY module, and PCIe Expansion/Option ROM pointers.
 512          */
 513         for (i = ptr_start; i < IXGBE_FW_PTR; i++) {
 514                 if (i == IXGBE_PHY_PTR || i == IXGBE_OPTION_ROM_PTR)
 515                         continue;
 516
 517                 if (ixgbe_read_eerd_generic(hw, i, &pointer)) {
 518                         DEBUGOUT("EEPROM read failed\n");
 519                         return IXGBE_ERR_EEPROM;
 520                 }
 521
 522                 /* Skip pointer section if the pointer is invalid. */
 523                 if (pointer == 0xFFFF || pointer == 0 ||
 524                     pointer >= hw->eeprom.word_size)
 525                         continue;
 526
 527                 if (ixgbe_read_eerd_generic(hw, pointer, &length)) {
 528                         DEBUGOUT("EEPROM read failed\n");
 529                         return IXGBE_ERR_EEPROM;
 530                 }
 531
 532                 /* Skip pointer section if length is invalid. */
 533                 if (length == 0xFFFF || length == 0 ||
 534                     (pointer + length) >= hw->eeprom.word_size)
 535                         continue;
 536
 537                 for (j = pointer + 1; j <= pointer + length; j++) {
 538                         if (ixgbe_read_eerd_generic(hw, j, &word)) {
 539                                 DEBUGOUT("EEPROM read failed\n");
 540                                 return IXGBE_ERR_EEPROM;
 541                         }
 542                         checksum += word;
 543                 }
 544         }
 545
 546         checksum = (u16)IXGBE_EEPROM_SUM - checksum;
 547
 548         return (s32)checksum;
 549 }
 550
 551 /**
 552  *  ixgbe_validate_eeprom_checksum_X540 - Validate EEPROM checksum
 553  *  @hw: pointer to hardware structure
 554  *  @checksum_val: calculated checksum
 555  *
 556  *  Performs checksum calculation and validates the EEPROM checksum.  If the
 557  *  caller does not need checksum_val, the value can be NULL.
 558  **/
 559 s32 ixgbe_validate_eeprom_checksum_X540(struct ixgbe_hw *hw,
 560                                         u16 *checksum_val)
 561 {
 562         s32 status;
 563         u16 checksum;
 564         u16 read_checksum = 0;
 565
 566         DEBUGFUNC("ixgbe_validate_eeprom_checksum_X540");
 567
 568         /* Read the first word from the EEPROM. If this times out or fails, do
 569          * not continue or we could be in for a very long wait while every
 570          * EEPROM read fails
 571          */
 572         status = hw->eeprom.ops.read(hw, 0, &checksum);
 573         if (status) {
 574                 DEBUGOUT("EEPROM read failed\n");
 575                 return status;
 576         }
 577
 578         if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM))
 579                 return IXGBE_ERR_SWFW_SYNC;
 580
 581         status = hw->eeprom.ops.calc_checksum(hw);
 582         if (status < 0)
 583                 goto out;
 584
 585         checksum = (u16)(status & 0xffff);
 586
 587         /* Do not use hw->eeprom.ops.read because we do not want to take
 588          * the synchronization semaphores twice here.
 589          */
 590         status = ixgbe_read_eerd_generic(hw, IXGBE_EEPROM_CHECKSUM,
 591                                          &read_checksum);
 592         if (status)
 593                 goto out;
 594
 595         /* Verify read checksum from EEPROM is the same as
 596          * calculated checksum
 597          */
 598         if (read_checksum != checksum) {
 599                 ERROR_REPORT1(IXGBE_ERROR_INVALID_STATE,
 600                              "Invalid EEPROM checksum");
 601                 status = IXGBE_ERR_EEPROM_CHECKSUM;
 602         }
 603
 604         /* If the user cares, return the calculated checksum */
 605         if (checksum_val)
 606                 *checksum_val = checksum;
 607
 608 out:
 609         hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
 610
 611         return status;
 612 }
 613
 614 /**
 615  * ixgbe_update_eeprom_checksum_X540 - Updates the EEPROM checksum and flash
 616  * @hw: pointer to hardware structure
 617  *
 618  * After writing EEPROM to shadow RAM using EEWR register, software calculates
 619  * checksum and updates the EEPROM and instructs the hardware to update
 620  * the flash.
 621  **/
 622 s32 ixgbe_update_eeprom_checksum_X540(struct ixgbe_hw *hw)
 623 {
 624         s32 status;
 625         u16 checksum;
 626
 627         DEBUGFUNC("ixgbe_update_eeprom_checksum_X540");
 628
 629         /* Read the first word from the EEPROM. If this times out or fails, do
 630          * not continue or we could be in for a very long wait while every
 631          * EEPROM read fails
 632          */
 633         status = hw->eeprom.ops.read(hw, 0, &checksum);
 634         if (status) {
 635                 DEBUGOUT("EEPROM read failed\n");
 636                 return status;
 637         }
 638
 639         if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM))
 640                 return IXGBE_ERR_SWFW_SYNC;
 641
 642         status = hw->eeprom.ops.calc_checksum(hw);
 643         if (status < 0)
 644                 goto out;
 645
 646         checksum = (u16)(status & 0xffff);
 647
 648         /* Do not use hw->eeprom.ops.write because we do not want to
 649          * take the synchronization semaphores twice here.
 650          */
 651         status = ixgbe_write_eewr_generic(hw, IXGBE_EEPROM_CHECKSUM, checksum);
 652         if (status)
 653                 goto out;
 654
 655         status = ixgbe_update_flash_X540(hw);
 656
 657 out:
 658         hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
 659
 660         return status;
 661 }
 662
 663 /**
 664  *  ixgbe_update_flash_X540 - Instruct HW to copy EEPROM to Flash device
 665  *  @hw: pointer to hardware structure
 666  *
 667  *  Set FLUP (bit 23) of the EEC register to instruct Hardware to copy
 668  *  EEPROM from shadow RAM to the flash device.
 669  **/
 670 s32 ixgbe_update_flash_X540(struct ixgbe_hw *hw)
 671 {
 672         u32 flup;
 673         s32 status;
 674
 675         DEBUGFUNC("ixgbe_update_flash_X540");
 676
 677         status = ixgbe_poll_flash_update_done_X540(hw);
 678         if (status == IXGBE_ERR_EEPROM) {
 679                 DEBUGOUT("Flash update time out\n");
 680                 goto out;
 681         }
 682
 683         flup = IXGBE_READ_REG(hw, IXGBE_EEC_BY_MAC(hw)) | IXGBE_EEC_FLUP;
 684         IXGBE_WRITE_REG(hw, IXGBE_EEC_BY_MAC(hw), flup);
 685
 686         status = ixgbe_poll_flash_update_done_X540(hw);
 687         if (status == IXGBE_SUCCESS)
 688                 DEBUGOUT("Flash update complete\n");
 689         else
 690                 DEBUGOUT("Flash update time out\n");
 691
 692         if (hw->mac.type == ixgbe_mac_X540 && hw->revision_id == 0) {
 693                 flup = IXGBE_READ_REG(hw, IXGBE_EEC_BY_MAC(hw));
 694
 695                 if (flup & IXGBE_EEC_SEC1VAL) {
 696                         flup |= IXGBE_EEC_FLUP;
 697                         IXGBE_WRITE_REG(hw, IXGBE_EEC_BY_MAC(hw), flup);
 698                 }
 699
 700                 status = ixgbe_poll_flash_update_done_X540(hw);
 701                 if (status == IXGBE_SUCCESS)
 702                         DEBUGOUT("Flash update complete\n");
 703                 else
 704                         DEBUGOUT("Flash update time out\n");
 705         }
 706 out:
 707         return status;
 708 }
 709
 710 /**
 711  *  ixgbe_poll_flash_update_done_X540 - Poll flash update status
 712  *  @hw: pointer to hardware structure
 713  *
 714  *  Polls the FLUDONE (bit 26) of the EEC Register to determine when the
 715  *  flash update is done.
 716  **/
 717 static s32 ixgbe_poll_flash_update_done_X540(struct ixgbe_hw *hw)
 718 {
 719         u32 i;
 720         u32 reg;
 721         s32 status = IXGBE_ERR_EEPROM;
 722
 723         DEBUGFUNC("ixgbe_poll_flash_update_done_X540");
 724
 725         for (i = 0; i < IXGBE_FLUDONE_ATTEMPTS; i++) {
 726                 reg = IXGBE_READ_REG(hw, IXGBE_EEC_BY_MAC(hw));
 727                 if (reg & IXGBE_EEC_FLUDONE) {
 728                         status = IXGBE_SUCCESS;
 729                         break;
 730                 }
 731                 msec_delay(5);
 732         }
 733
 734         if (i == IXGBE_FLUDONE_ATTEMPTS)
 735                 ERROR_REPORT1(IXGBE_ERROR_POLLING,
 736                              "Flash update status polling timed out");
 737
 738         return status;
 739 }
 740
 741 /**
 742  *  ixgbe_acquire_swfw_sync_X540 - Acquire SWFW semaphore
 743  *  @hw: pointer to hardware structure
 744  *  @mask: Mask to specify which semaphore to acquire
 745  *
 746  *  Acquires the SWFW semaphore thought the SW_FW_SYNC register for
 747  *  the specified function (CSR, PHY0, PHY1, NVM, Flash)
 748  **/
 749 s32 ixgbe_acquire_swfw_sync_X540(struct ixgbe_hw *hw, u32 mask)
 750 {
 751         u32 swmask = mask & IXGBE_GSSR_NVM_PHY_MASK;
 752         u32 fwmask = swmask << 5;
 753         u32 swi2c_mask = mask & IXGBE_GSSR_I2C_MASK;
 754         u32 timeout = 200;
 755         u32 hwmask = 0;
 756         u32 swfw_sync;
 757         u32 i;
 758
 759         DEBUGFUNC("ixgbe_acquire_swfw_sync_X540");
 760
 761         if (swmask & IXGBE_GSSR_EEP_SM)
 762                 hwmask |= IXGBE_GSSR_FLASH_SM;
 763
 764         /* SW only mask doesn't have FW bit pair */
 765         if (mask & IXGBE_GSSR_SW_MNG_SM)
 766                 swmask |= IXGBE_GSSR_SW_MNG_SM;
 767
 768         swmask |= swi2c_mask;
 769         fwmask |= swi2c_mask << 2;
 770         for (i = 0; i < timeout; i++) {
 771                 /* SW NVM semaphore bit is used for access to all
 772                  * SW_FW_SYNC bits (not just NVM)
 773                  */
 774                 if (ixgbe_get_swfw_sync_semaphore(hw))
 775                         return IXGBE_ERR_SWFW_SYNC;
 776
 777                 swfw_sync = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw));
 778                 if (!(swfw_sync & (fwmask | swmask | hwmask))) {
 779                         swfw_sync |= swmask;
 780                         IXGBE_WRITE_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw),
 781                                         swfw_sync);
 782                         ixgbe_release_swfw_sync_semaphore(hw);
 783                         msec_delay(5);
 784                         return IXGBE_SUCCESS;
 785                 }
 786                 /* Firmware currently using resource (fwmask), hardware
 787                  * currently using resource (hwmask), or other software
 788                  * thread currently using resource (swmask)
 789                  */
 790                 ixgbe_release_swfw_sync_semaphore(hw);
 791                 msec_delay(5);
 792         }
 793
 794         /* Failed to get SW only semaphore */
 795         if (swmask == IXGBE_GSSR_SW_MNG_SM) {
 796                 ERROR_REPORT1(IXGBE_ERROR_POLLING,
 797                              "Failed to get SW only semaphore");
 798                 return IXGBE_ERR_SWFW_SYNC;
 799         }
 800
 801         /* If the resource is not released by the FW/HW the SW can assume that
 802          * the FW/HW malfunctions. In that case the SW should set the SW bit(s)
 803          * of the requested resource(s) while ignoring the corresponding FW/HW
 804          * bits in the SW_FW_SYNC register.
 805          */
 806         if (ixgbe_get_swfw_sync_semaphore(hw))
 807                 return IXGBE_ERR_SWFW_SYNC;
 808         swfw_sync = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw));
 809         if (swfw_sync & (fwmask | hwmask)) {
 810                 swfw_sync |= swmask;
 811                 IXGBE_WRITE_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw), swfw_sync);
 812                 ixgbe_release_swfw_sync_semaphore(hw);
 813                 msec_delay(5);
 814                 return IXGBE_SUCCESS;
 815         }
 816         /* If the resource is not released by other SW the SW can assume that
 817          * the other SW malfunctions. In that case the SW should clear all SW
 818          * flags that it does not own and then repeat the whole process once
 819          * again.
 820          */
 821         if (swfw_sync & swmask) {
 822                 u32 rmask = IXGBE_GSSR_EEP_SM | IXGBE_GSSR_PHY0_SM |
 823                             IXGBE_GSSR_PHY1_SM | IXGBE_GSSR_MAC_CSR_SM;
 824
 825                 if (swi2c_mask)
 826                         rmask |= IXGBE_GSSR_I2C_MASK;
 827                 ixgbe_release_swfw_sync_X540(hw, rmask);
 828                 ixgbe_release_swfw_sync_semaphore(hw);
 829                 return IXGBE_ERR_SWFW_SYNC;
 830         }
 831         ixgbe_release_swfw_sync_semaphore(hw);
 832
 833         return IXGBE_ERR_SWFW_SYNC;
 834 }
 835
 836 /**
 837  *  ixgbe_release_swfw_sync_X540 - Release SWFW semaphore
 838  *  @hw: pointer to hardware structure
 839  *  @mask: Mask to specify which semaphore to release
 840  *
 841  *  Releases the SWFW semaphore through the SW_FW_SYNC register
 842  *  for the specified function (CSR, PHY0, PHY1, EVM, Flash)
 843  **/
 844 void ixgbe_release_swfw_sync_X540(struct ixgbe_hw *hw, u32 mask)
 845 {
 846         u32 swmask = mask & (IXGBE_GSSR_NVM_PHY_MASK | IXGBE_GSSR_SW_MNG_SM);
 847         u32 swfw_sync;
 848
 849         DEBUGFUNC("ixgbe_release_swfw_sync_X540");
 850
 851         if (mask & IXGBE_GSSR_I2C_MASK)
 852                 swmask |= mask & IXGBE_GSSR_I2C_MASK;
 853         ixgbe_get_swfw_sync_semaphore(hw);
 854
 855         swfw_sync = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw));
 856         swfw_sync &= ~swmask;
 857         IXGBE_WRITE_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw), swfw_sync);
 858
 859         ixgbe_release_swfw_sync_semaphore(hw);
 860         msec_delay(5);
 861 }
 862
 863 /**
 864  *  ixgbe_get_swfw_sync_semaphore - Get hardware semaphore
 865  *  @hw: pointer to hardware structure
 866  *
 867  *  Sets the hardware semaphores so SW/FW can gain control of shared resources
 868  **/
 869 static s32 ixgbe_get_swfw_sync_semaphore(struct ixgbe_hw *hw)
 870 {
 871         s32 status = IXGBE_ERR_EEPROM;
 872         u32 timeout = 2000;
 873         u32 i;
 874         u32 swsm;
 875
 876         DEBUGFUNC("ixgbe_get_swfw_sync_semaphore");
 877
 878         /* Get SMBI software semaphore between device drivers first */
 879         for (i = 0; i < timeout; i++) {
 880                 /*
 881                  * If the SMBI bit is 0 when we read it, then the bit will be
 882                  * set and we have the semaphore
 883                  */
 884                 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM_BY_MAC(hw));
 885                 if (!(swsm & IXGBE_SWSM_SMBI)) {
 886                         status = IXGBE_SUCCESS;
 887                         break;
 888                 }
 889                 usec_delay(50);
 890         }
 891
 892         /* Now get the semaphore between SW/FW through the REGSMP bit */
 893         if (status == IXGBE_SUCCESS) {
 894                 for (i = 0; i < timeout; i++) {
 895                         swsm = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw));
 896                         if (!(swsm & IXGBE_SWFW_REGSMP))
 897                                 break;
 898
 899                         usec_delay(50);
 900                 }
 901
 902                 /*
 903                  * Release semaphores and return error if SW NVM semaphore
 904                  * was not granted because we don't have access to the EEPROM
 905                  */
 906                 if (i >= timeout) {
 907                         ERROR_REPORT1(IXGBE_ERROR_POLLING,
 908                                 "REGSMP Software NVM semaphore not granted.\n");
 909                         ixgbe_release_swfw_sync_semaphore(hw);
 910                         status = IXGBE_ERR_EEPROM;
 911                 }
 912         } else {
 913                 ERROR_REPORT1(IXGBE_ERROR_POLLING,
 914                              "Software semaphore SMBI between device drivers "
 915                              "not granted.\n");
 916         }
 917
 918         return status;
 919 }
 920
 921 /**
 922  *  ixgbe_release_swfw_sync_semaphore - Release hardware semaphore
 923  *  @hw: pointer to hardware structure
 924  *
 925  *  This function clears hardware semaphore bits.
 926  **/
 927 static void ixgbe_release_swfw_sync_semaphore(struct ixgbe_hw *hw)
 928 {
 929         u32 swsm;
 930
 931         DEBUGFUNC("ixgbe_release_swfw_sync_semaphore");
 932
 933         /* Release both semaphores by writing 0 to the bits REGSMP and SMBI */
 934
 935         swsm = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw));
 936         swsm &= ~IXGBE_SWFW_REGSMP;
 937         IXGBE_WRITE_REG(hw, IXGBE_SWFW_SYNC_BY_MAC(hw), swsm);
 938
 939         swsm = IXGBE_READ_REG(hw, IXGBE_SWSM_BY_MAC(hw));
 940         swsm &= ~IXGBE_SWSM_SMBI;
 941         IXGBE_WRITE_REG(hw, IXGBE_SWSM_BY_MAC(hw), swsm);
 942
 943         IXGBE_WRITE_FLUSH(hw);
 944 }
 945
 946 /**
 947  * ixgbe_blink_led_start_X540 - Blink LED based on index.
 948  * @hw: pointer to hardware structure
 949  * @index: led number to blink
 950  *
 951  * Devices that implement the version 2 interface:
 952  *   X540
 953  **/
 954 s32 ixgbe_blink_led_start_X540(struct ixgbe_hw *hw, u32 index)
 955 {
 956         u32 macc_reg;
 957         u32 ledctl_reg;
 958         ixgbe_link_speed speed;
 959         bool link_up;
 960
 961         DEBUGFUNC("ixgbe_blink_led_start_X540");
 962
 963         /*
 964          * Link should be up in order for the blink bit in the LED control
 965          * register to work. Force link and speed in the MAC if link is down.
 966          * This will be reversed when we stop the blinking.
 967          */
 968         hw->mac.ops.check_link(hw, &speed, &link_up, FALSE);
 969         if (link_up == FALSE) {
 970                 macc_reg = IXGBE_READ_REG(hw, IXGBE_MACC);
 971                 macc_reg |= IXGBE_MACC_FLU | IXGBE_MACC_FSV_10G | IXGBE_MACC_FS;
 972                 IXGBE_WRITE_REG(hw, IXGBE_MACC, macc_reg);
 973         }
 974         /* Set the LED to LINK_UP + BLINK. */
 975         ledctl_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
 976         ledctl_reg &= ~IXGBE_LED_MODE_MASK(index);
 977         ledctl_reg |= IXGBE_LED_BLINK(index);
 978         IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, ledctl_reg);
 979         IXGBE_WRITE_FLUSH(hw);
 980
 981         return IXGBE_SUCCESS;
 982 }
 983
 984 /**
 985  * ixgbe_blink_led_stop_X540 - Stop blinking LED based on index.
 986  * @hw: pointer to hardware structure
 987  * @index: led number to stop blinking
 988  *
 989  * Devices that implement the version 2 interface:
 990  *   X540
 991  **/
 992 s32 ixgbe_blink_led_stop_X540(struct ixgbe_hw *hw, u32 index)
 993 {
 994         u32 macc_reg;
 995         u32 ledctl_reg;
 996
 997         DEBUGFUNC("ixgbe_blink_led_stop_X540");
 998
 999         /* Restore the LED to its default value. */
1000         ledctl_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
1001         ledctl_reg &= ~IXGBE_LED_MODE_MASK(index);
1002         ledctl_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index);
1003         ledctl_reg &= ~IXGBE_LED_BLINK(index);
1004         IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, ledctl_reg);
1005
1006         /* Unforce link and speed in the MAC. */
1007         macc_reg = IXGBE_READ_REG(hw, IXGBE_MACC);
1008         macc_reg &= ~(IXGBE_MACC_FLU | IXGBE_MACC_FSV_10G | IXGBE_MACC_FS);
1009         IXGBE_WRITE_REG(hw, IXGBE_MACC, macc_reg);
1010         IXGBE_WRITE_FLUSH(hw);
1011
1012         return IXGBE_SUCCESS;
1013 }