1 /*******************************************************************************

     2 

     3   Intel PRO/1000 Linux driver

     4   Copyright(c) 1999 - 2008 Intel Corporation.

     5 

     6   This program is free software; you can redistribute it and/or modify it

     7   under the terms and conditions of the GNU General Public License,

     8   version 2, as published by the Free Software Foundation.

     9 

    10   This program is distributed in the hope it will be useful, but WITHOUT

    11   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    12   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for

    13   more details.

    14 

    15   You should have received a copy of the GNU General Public License along with

    16   this program; if not, write to the Free Software Foundation, Inc.,

    17   51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

    18 

    19   The full GNU General Public License is included in this distribution in

    20   the file called "COPYING".

    21 

    22   Contact Information:

    23   Linux NICS <linux.nics@intel.com>

    24   e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>

    25   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

    26 

    27 *******************************************************************************/

    28 

    29 /*

    30  * 80003ES2LAN Gigabit Ethernet Controller (Copper)

    31  * 80003ES2LAN Gigabit Ethernet Controller (Serdes)

    32  */

    33 

    34 #include <linux/netdevice.h>

    35 #include <linux/ethtool.h>

    36 #include <linux/delay.h>

    37 #include <linux/pci.h>

    38 

    39 #include "e1000-2.6.32-ethercat.h"

    40 

    41 #define E1000_KMRNCTRLSTA_OFFSET_FIFO_CTRL	 0x00

    42 #define E1000_KMRNCTRLSTA_OFFSET_INB_CTRL	 0x02

    43 #define E1000_KMRNCTRLSTA_OFFSET_HD_CTRL	 0x10

    44 #define E1000_KMRNCTRLSTA_OFFSET_MAC2PHY_OPMODE	 0x1F

    45 

    46 #define E1000_KMRNCTRLSTA_FIFO_CTRL_RX_BYPASS	 0x0008

    47 #define E1000_KMRNCTRLSTA_FIFO_CTRL_TX_BYPASS	 0x0800

    48 #define E1000_KMRNCTRLSTA_INB_CTRL_DIS_PADDING	 0x0010

    49 

    50 #define E1000_KMRNCTRLSTA_HD_CTRL_10_100_DEFAULT 0x0004

    51 #define E1000_KMRNCTRLSTA_HD_CTRL_1000_DEFAULT	 0x0000

    52 #define E1000_KMRNCTRLSTA_OPMODE_E_IDLE		 0x2000

    53 

    54 #define E1000_TCTL_EXT_GCEX_MASK 0x000FFC00 /* Gigabit Carry Extend Padding */

    55 #define DEFAULT_TCTL_EXT_GCEX_80003ES2LAN	 0x00010000

    56 

    57 #define DEFAULT_TIPG_IPGT_1000_80003ES2LAN	 0x8

    58 #define DEFAULT_TIPG_IPGT_10_100_80003ES2LAN	 0x9

    59 

    60 /* GG82563 PHY Specific Status Register (Page 0, Register 16 */

    61 #define GG82563_PSCR_POLARITY_REVERSAL_DISABLE	 0x0002 /* 1=Reversal Disab. */

    62 #define GG82563_PSCR_CROSSOVER_MODE_MASK	 0x0060

    63 #define GG82563_PSCR_CROSSOVER_MODE_MDI		 0x0000 /* 00=Manual MDI */

    64 #define GG82563_PSCR_CROSSOVER_MODE_MDIX	 0x0020 /* 01=Manual MDIX */

    65 #define GG82563_PSCR_CROSSOVER_MODE_AUTO	 0x0060 /* 11=Auto crossover */

    66 

    67 /* PHY Specific Control Register 2 (Page 0, Register 26) */

    68 #define GG82563_PSCR2_REVERSE_AUTO_NEG		 0x2000

    69 						/* 1=Reverse Auto-Negotiation */

    70 

    71 /* MAC Specific Control Register (Page 2, Register 21) */

    72 /* Tx clock speed for Link Down and 1000BASE-T for the following speeds */

    73 #define GG82563_MSCR_TX_CLK_MASK		 0x0007

    74 #define GG82563_MSCR_TX_CLK_10MBPS_2_5		 0x0004

    75 #define GG82563_MSCR_TX_CLK_100MBPS_25		 0x0005

    76 #define GG82563_MSCR_TX_CLK_1000MBPS_25		 0x0007

    77 

    78 #define GG82563_MSCR_ASSERT_CRS_ON_TX		 0x0010 /* 1=Assert */

    79 

    80 /* DSP Distance Register (Page 5, Register 26) */

    81 #define GG82563_DSPD_CABLE_LENGTH		 0x0007 /* 0 = <50M

    82 							   1 = 50-80M

    83 							   2 = 80-110M

    84 							   3 = 110-140M

    85 							   4 = >140M */

    86 

    87 /* Kumeran Mode Control Register (Page 193, Register 16) */

    88 #define GG82563_KMCR_PASS_FALSE_CARRIER		 0x0800

    89 

    90 /* Max number of times Kumeran read/write should be validated */

    91 #define GG82563_MAX_KMRN_RETRY  0x5

    92 

    93 /* Power Management Control Register (Page 193, Register 20) */

    94 #define GG82563_PMCR_ENABLE_ELECTRICAL_IDLE	 0x0001

    95 					   /* 1=Enable SERDES Electrical Idle */

    96 

    97 /* In-Band Control Register (Page 194, Register 18) */

    98 #define GG82563_ICR_DIS_PADDING			 0x0010 /* Disable Padding */

    99 

   100 /*

   101  * A table for the GG82563 cable length where the range is defined

   102  * with a lower bound at "index" and the upper bound at

   103  * "index + 5".

   104  */

   105 static const u16 e1000_gg82563_cable_length_table[] =

   106 	 { 0, 60, 115, 150, 150, 60, 115, 150, 180, 180, 0xFF };

   107 

   108 static s32 e1000_setup_copper_link_80003es2lan(struct e1000_hw *hw);

   109 static s32 e1000_acquire_swfw_sync_80003es2lan(struct e1000_hw *hw, u16 mask);

   110 static void e1000_release_swfw_sync_80003es2lan(struct e1000_hw *hw, u16 mask);

   111 static void e1000_initialize_hw_bits_80003es2lan(struct e1000_hw *hw);

   112 static void e1000_clear_hw_cntrs_80003es2lan(struct e1000_hw *hw);

   113 static s32 e1000_cfg_kmrn_1000_80003es2lan(struct e1000_hw *hw);

   114 static s32 e1000_cfg_kmrn_10_100_80003es2lan(struct e1000_hw *hw, u16 duplex);

   115 static s32 e1000_cfg_on_link_up_80003es2lan(struct e1000_hw *hw);

   116 static s32  e1000_read_kmrn_reg_80003es2lan(struct e1000_hw *hw, u32 offset,

   117                                             u16 *data);

   118 static s32  e1000_write_kmrn_reg_80003es2lan(struct e1000_hw *hw, u32 offset,

   119                                              u16 data);

   120 

   121 /**

   122  *  e1000_init_phy_params_80003es2lan - Init ESB2 PHY func ptrs.

   123  *  @hw: pointer to the HW structure

   124  *

   125  *  This is a function pointer entry point called by the api module.

   126  **/

   127 static s32 e1000_init_phy_params_80003es2lan(struct e1000_hw *hw)

   128 {

   129 	struct e1000_phy_info *phy = &hw->phy;

   130 	s32 ret_val;

   131 

   132 	if (hw->phy.media_type != e1000_media_type_copper) {

   133 		phy->type	= e1000_phy_none;

   134 		return 0;

   135 	}

   136 

   137 	phy->addr		= 1;

   138 	phy->autoneg_mask	= AUTONEG_ADVERTISE_SPEED_DEFAULT;

   139 	phy->reset_delay_us      = 100;

   140 	phy->type		= e1000_phy_gg82563;

   141 

   142 	/* This can only be done after all function pointers are setup. */

   143 	ret_val = e1000e_get_phy_id(hw);

   144 

   145 	/* Verify phy id */

   146 	if (phy->id != GG82563_E_PHY_ID)

   147 		return -E1000_ERR_PHY;

   148 

   149 	return ret_val;

   150 }

   151 

   152 /**

   153  *  e1000_init_nvm_params_80003es2lan - Init ESB2 NVM func ptrs.

   154  *  @hw: pointer to the HW structure

   155  *

   156  *  This is a function pointer entry point called by the api module.

   157  **/

   158 static s32 e1000_init_nvm_params_80003es2lan(struct e1000_hw *hw)

   159 {

   160 	struct e1000_nvm_info *nvm = &hw->nvm;

   161 	u32 eecd = er32(EECD);

   162 	u16 size;

   163 

   164 	nvm->opcode_bits	= 8;

   165 	nvm->delay_usec	 = 1;

   166 	switch (nvm->override) {

   167 	case e1000_nvm_override_spi_large:

   168 		nvm->page_size    = 32;

   169 		nvm->address_bits = 16;

   170 		break;

   171 	case e1000_nvm_override_spi_small:

   172 		nvm->page_size    = 8;

   173 		nvm->address_bits = 8;

   174 		break;

   175 	default:

   176 		nvm->page_size    = eecd & E1000_EECD_ADDR_BITS ? 32 : 8;

   177 		nvm->address_bits = eecd & E1000_EECD_ADDR_BITS ? 16 : 8;

   178 		break;

   179 	}

   180 

   181 	nvm->type = e1000_nvm_eeprom_spi;

   182 

   183 	size = (u16)((eecd & E1000_EECD_SIZE_EX_MASK) >>

   184 			  E1000_EECD_SIZE_EX_SHIFT);

   185 

   186 	/*

   187 	 * Added to a constant, "size" becomes the left-shift value

   188 	 * for setting word_size.

   189 	 */

   190 	size += NVM_WORD_SIZE_BASE_SHIFT;

   191 

   192 	/* EEPROM access above 16k is unsupported */

   193 	if (size > 14)

   194 		size = 14;

   195 	nvm->word_size	= 1 << size;

   196 

   197 	return 0;

   198 }

   199 

   200 /**

   201  *  e1000_init_mac_params_80003es2lan - Init ESB2 MAC func ptrs.

   202  *  @hw: pointer to the HW structure

   203  *

   204  *  This is a function pointer entry point called by the api module.

   205  **/

   206 static s32 e1000_init_mac_params_80003es2lan(struct e1000_adapter *adapter)

   207 {

   208 	struct e1000_hw *hw = &adapter->hw;

   209 	struct e1000_mac_info *mac = &hw->mac;

   210 	struct e1000_mac_operations *func = &mac->ops;

   211 

   212 	/* Set media type */

   213 	switch (adapter->pdev->device) {

   214 	case E1000_DEV_ID_80003ES2LAN_SERDES_DPT:

   215 		hw->phy.media_type = e1000_media_type_internal_serdes;

   216 		break;

   217 	default:

   218 		hw->phy.media_type = e1000_media_type_copper;

   219 		break;

   220 	}

   221 

   222 	/* Set mta register count */

   223 	mac->mta_reg_count = 128;

   224 	/* Set rar entry count */

   225 	mac->rar_entry_count = E1000_RAR_ENTRIES;

   226 	/* Set if manageability features are enabled. */

   227 	mac->arc_subsystem_valid = (er32(FWSM) & E1000_FWSM_MODE_MASK) ? 1 : 0;

   228 

   229 	/* check for link */

   230 	switch (hw->phy.media_type) {

   231 	case e1000_media_type_copper:

   232 		func->setup_physical_interface = e1000_setup_copper_link_80003es2lan;

   233 		func->check_for_link = e1000e_check_for_copper_link;

   234 		break;

   235 	case e1000_media_type_fiber:

   236 		func->setup_physical_interface = e1000e_setup_fiber_serdes_link;

   237 		func->check_for_link = e1000e_check_for_fiber_link;

   238 		break;

   239 	case e1000_media_type_internal_serdes:

   240 		func->setup_physical_interface = e1000e_setup_fiber_serdes_link;

   241 		func->check_for_link = e1000e_check_for_serdes_link;

   242 		break;

   243 	default:

   244 		return -E1000_ERR_CONFIG;

   245 		break;

   246 	}

   247 

   248 	return 0;

   249 }

   250 

   251 static s32 e1000_get_variants_80003es2lan(struct e1000_adapter *adapter)

   252 {

   253 	struct e1000_hw *hw = &adapter->hw;

   254 	s32 rc;

   255 

   256 	rc = e1000_init_mac_params_80003es2lan(adapter);

   257 	if (rc)

   258 		return rc;

   259 

   260 	rc = e1000_init_nvm_params_80003es2lan(hw);

   261 	if (rc)

   262 		return rc;

   263 

   264 	rc = e1000_init_phy_params_80003es2lan(hw);

   265 	if (rc)

   266 		return rc;

   267 

   268 	return 0;

   269 }

   270 

   271 /**

   272  *  e1000_acquire_phy_80003es2lan - Acquire rights to access PHY

   273  *  @hw: pointer to the HW structure

   274  *

   275  *  A wrapper to acquire access rights to the correct PHY.  This is a

   276  *  function pointer entry point called by the api module.

   277  **/

   278 static s32 e1000_acquire_phy_80003es2lan(struct e1000_hw *hw)

   279 {

   280 	u16 mask;

   281 

   282 	mask = hw->bus.func ? E1000_SWFW_PHY1_SM : E1000_SWFW_PHY0_SM;

   283 	return e1000_acquire_swfw_sync_80003es2lan(hw, mask);

   284 }

   285 

   286 /**

   287  *  e1000_release_phy_80003es2lan - Release rights to access PHY

   288  *  @hw: pointer to the HW structure

   289  *

   290  *  A wrapper to release access rights to the correct PHY.  This is a

   291  *  function pointer entry point called by the api module.

   292  **/

   293 static void e1000_release_phy_80003es2lan(struct e1000_hw *hw)

   294 {

   295 	u16 mask;

   296 

   297 	mask = hw->bus.func ? E1000_SWFW_PHY1_SM : E1000_SWFW_PHY0_SM;

   298 	e1000_release_swfw_sync_80003es2lan(hw, mask);

   299 }

   300 

   301 /**

   302  *  e1000_acquire_mac_csr_80003es2lan - Acquire rights to access Kumeran register

   303  *  @hw: pointer to the HW structure

   304  *

   305  *  Acquire the semaphore to access the Kumeran interface.

   306  *

   307  **/

   308 static s32 e1000_acquire_mac_csr_80003es2lan(struct e1000_hw *hw)

   309 {

   310 	u16 mask;

   311 

   312 	mask = E1000_SWFW_CSR_SM;

   313 

   314 	return e1000_acquire_swfw_sync_80003es2lan(hw, mask);

   315 }

   316 

   317 /**

   318  *  e1000_release_mac_csr_80003es2lan - Release rights to access Kumeran Register

   319  *  @hw: pointer to the HW structure

   320  *

   321  *  Release the semaphore used to access the Kumeran interface

   322  **/

   323 static void e1000_release_mac_csr_80003es2lan(struct e1000_hw *hw)

   324 {

   325 	u16 mask;

   326 

   327 	mask = E1000_SWFW_CSR_SM;

   328 

   329 	e1000_release_swfw_sync_80003es2lan(hw, mask);

   330 }

   331 

   332 /**

   333  *  e1000_acquire_nvm_80003es2lan - Acquire rights to access NVM

   334  *  @hw: pointer to the HW structure

   335  *

   336  *  Acquire the semaphore to access the EEPROM.  This is a function

   337  *  pointer entry point called by the api module.

   338  **/

   339 static s32 e1000_acquire_nvm_80003es2lan(struct e1000_hw *hw)

   340 {

   341 	s32 ret_val;

   342 

   343 	ret_val = e1000_acquire_swfw_sync_80003es2lan(hw, E1000_SWFW_EEP_SM);

   344 	if (ret_val)

   345 		return ret_val;

   346 

   347 	ret_val = e1000e_acquire_nvm(hw);

   348 

   349 	if (ret_val)

   350 		e1000_release_swfw_sync_80003es2lan(hw, E1000_SWFW_EEP_SM);

   351 

   352 	return ret_val;

   353 }

   354 

   355 /**

   356  *  e1000_release_nvm_80003es2lan - Relinquish rights to access NVM

   357  *  @hw: pointer to the HW structure

   358  *

   359  *  Release the semaphore used to access the EEPROM.  This is a

   360  *  function pointer entry point called by the api module.

   361  **/

   362 static void e1000_release_nvm_80003es2lan(struct e1000_hw *hw)

   363 {

   364 	e1000e_release_nvm(hw);

   365 	e1000_release_swfw_sync_80003es2lan(hw, E1000_SWFW_EEP_SM);

   366 }

   367 

   368 /**

   369  *  e1000_acquire_swfw_sync_80003es2lan - Acquire SW/FW semaphore

   370  *  @hw: pointer to the HW structure

   371  *  @mask: specifies which semaphore to acquire

   372  *

   373  *  Acquire the SW/FW semaphore to access the PHY or NVM.  The mask

   374  *  will also specify which port we're acquiring the lock for.

   375  **/

   376 static s32 e1000_acquire_swfw_sync_80003es2lan(struct e1000_hw *hw, u16 mask)

   377 {

   378 	u32 swfw_sync;

   379 	u32 swmask = mask;

   380 	u32 fwmask = mask << 16;

   381 	s32 i = 0;

   382 	s32 timeout = 50;

   383 

   384 	while (i < timeout) {

   385 		if (e1000e_get_hw_semaphore(hw))

   386 			return -E1000_ERR_SWFW_SYNC;

   387 

   388 		swfw_sync = er32(SW_FW_SYNC);

   389 		if (!(swfw_sync & (fwmask | swmask)))

   390 			break;

   391 

   392 		/*

   393 		 * Firmware currently using resource (fwmask)

   394 		 * or other software thread using resource (swmask)

   395 		 */

   396 		e1000e_put_hw_semaphore(hw);

   397 		mdelay(5);

   398 		i++;

   399 	}

   400 

   401 	if (i == timeout) {

   402 		hw_dbg(hw,

   403 		       "Driver can't access resource, SW_FW_SYNC timeout.\n");

   404 		return -E1000_ERR_SWFW_SYNC;

   405 	}

   406 

   407 	swfw_sync |= swmask;

   408 	ew32(SW_FW_SYNC, swfw_sync);

   409 

   410 	e1000e_put_hw_semaphore(hw);

   411 

   412 	return 0;

   413 }

   414 

   415 /**

   416  *  e1000_release_swfw_sync_80003es2lan - Release SW/FW semaphore

   417  *  @hw: pointer to the HW structure

   418  *  @mask: specifies which semaphore to acquire

   419  *

   420  *  Release the SW/FW semaphore used to access the PHY or NVM.  The mask

   421  *  will also specify which port we're releasing the lock for.

   422  **/

   423 static void e1000_release_swfw_sync_80003es2lan(struct e1000_hw *hw, u16 mask)

   424 {

   425 	u32 swfw_sync;

   426 

   427 	while (e1000e_get_hw_semaphore(hw) != 0);

   428 	/* Empty */

   429 

   430 	swfw_sync = er32(SW_FW_SYNC);

   431 	swfw_sync &= ~mask;

   432 	ew32(SW_FW_SYNC, swfw_sync);

   433 

   434 	e1000e_put_hw_semaphore(hw);

   435 }

   436 

   437 /**

   438  *  e1000_read_phy_reg_gg82563_80003es2lan - Read GG82563 PHY register

   439  *  @hw: pointer to the HW structure

   440  *  @offset: offset of the register to read

   441  *  @data: pointer to the data returned from the operation

   442  *

   443  *  Read the GG82563 PHY register.  This is a function pointer entry

   444  *  point called by the api module.

   445  **/

   446 static s32 e1000_read_phy_reg_gg82563_80003es2lan(struct e1000_hw *hw,

   447 						  u32 offset, u16 *data)

   448 {

   449 	s32 ret_val;

   450 	u32 page_select;

   451 	u16 temp;

   452 

   453 	ret_val = e1000_acquire_phy_80003es2lan(hw);

   454 	if (ret_val)

   455 		return ret_val;

   456 

   457 	/* Select Configuration Page */

   458 	if ((offset & MAX_PHY_REG_ADDRESS) < GG82563_MIN_ALT_REG) {

   459 		page_select = GG82563_PHY_PAGE_SELECT;

   460 	} else {

   461 		/*

   462 		 * Use Alternative Page Select register to access

   463 		 * registers 30 and 31

   464 		 */

   465 		page_select = GG82563_PHY_PAGE_SELECT_ALT;

   466 	}

   467 

   468 	temp = (u16)((u16)offset >> GG82563_PAGE_SHIFT);

   469 	ret_val = e1000e_write_phy_reg_mdic(hw, page_select, temp);

   470 	if (ret_val) {

   471 		e1000_release_phy_80003es2lan(hw);

   472 		return ret_val;

   473 	}

   474 

   475 	/*

   476 	 * The "ready" bit in the MDIC register may be incorrectly set

   477 	 * before the device has completed the "Page Select" MDI

   478 	 * transaction.  So we wait 200us after each MDI command...

   479 	 */

   480 	udelay(200);

   481 

   482 	/* ...and verify the command was successful. */

   483 	ret_val = e1000e_read_phy_reg_mdic(hw, page_select, &temp);

   484 

   485 	if (((u16)offset >> GG82563_PAGE_SHIFT) != temp) {

   486 		ret_val = -E1000_ERR_PHY;

   487 		e1000_release_phy_80003es2lan(hw);

   488 		return ret_val;

   489 	}

   490 

   491 	udelay(200);

   492 

   493 	ret_val = e1000e_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,

   494 					   data);

   495 

   496 	udelay(200);

   497 	e1000_release_phy_80003es2lan(hw);

   498 

   499 	return ret_val;

   500 }

   501 

   502 /**

   503  *  e1000_write_phy_reg_gg82563_80003es2lan - Write GG82563 PHY register

   504  *  @hw: pointer to the HW structure

   505  *  @offset: offset of the register to read

   506  *  @data: value to write to the register

   507  *

   508  *  Write to the GG82563 PHY register.  This is a function pointer entry

   509  *  point called by the api module.

   510  **/

   511 static s32 e1000_write_phy_reg_gg82563_80003es2lan(struct e1000_hw *hw,

   512 						   u32 offset, u16 data)

   513 {

   514 	s32 ret_val;

   515 	u32 page_select;

   516 	u16 temp;

   517 

   518 	ret_val = e1000_acquire_phy_80003es2lan(hw);

   519 	if (ret_val)

   520 		return ret_val;

   521 

   522 	/* Select Configuration Page */

   523 	if ((offset & MAX_PHY_REG_ADDRESS) < GG82563_MIN_ALT_REG) {

   524 		page_select = GG82563_PHY_PAGE_SELECT;

   525 	} else {

   526 		/*

   527 		 * Use Alternative Page Select register to access

   528 		 * registers 30 and 31

   529 		 */

   530 		page_select = GG82563_PHY_PAGE_SELECT_ALT;

   531 	}

   532 

   533 	temp = (u16)((u16)offset >> GG82563_PAGE_SHIFT);

   534 	ret_val = e1000e_write_phy_reg_mdic(hw, page_select, temp);

   535 	if (ret_val) {

   536 		e1000_release_phy_80003es2lan(hw);

   537 		return ret_val;

   538 	}

   539 

   540 

   541 	/*

   542 	 * The "ready" bit in the MDIC register may be incorrectly set

   543 	 * before the device has completed the "Page Select" MDI

   544 	 * transaction.  So we wait 200us after each MDI command...

   545 	 */

   546 	udelay(200);

   547 

   548 	/* ...and verify the command was successful. */

   549 	ret_val = e1000e_read_phy_reg_mdic(hw, page_select, &temp);

   550 

   551 	if (((u16)offset >> GG82563_PAGE_SHIFT) != temp) {

   552 		e1000_release_phy_80003es2lan(hw);

   553 		return -E1000_ERR_PHY;

   554 	}

   555 

   556 	udelay(200);

   557 

   558 	ret_val = e1000e_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,

   559 					    data);

   560 

   561 	udelay(200);

   562 	e1000_release_phy_80003es2lan(hw);

   563 

   564 	return ret_val;

   565 }

   566 

   567 /**

   568  *  e1000_write_nvm_80003es2lan - Write to ESB2 NVM

   569  *  @hw: pointer to the HW structure

   570  *  @offset: offset of the register to read

   571  *  @words: number of words to write

   572  *  @data: buffer of data to write to the NVM

   573  *

   574  *  Write "words" of data to the ESB2 NVM.  This is a function

   575  *  pointer entry point called by the api module.

   576  **/

   577 static s32 e1000_write_nvm_80003es2lan(struct e1000_hw *hw, u16 offset,

   578 				       u16 words, u16 *data)

   579 {

   580 	return e1000e_write_nvm_spi(hw, offset, words, data);

   581 }

   582 

   583 /**

   584  *  e1000_get_cfg_done_80003es2lan - Wait for configuration to complete

   585  *  @hw: pointer to the HW structure

   586  *

   587  *  Wait a specific amount of time for manageability processes to complete.

   588  *  This is a function pointer entry point called by the phy module.

   589  **/

   590 static s32 e1000_get_cfg_done_80003es2lan(struct e1000_hw *hw)

   591 {

   592 	s32 timeout = PHY_CFG_TIMEOUT;

   593 	u32 mask = E1000_NVM_CFG_DONE_PORT_0;

   594 

   595 	if (hw->bus.func == 1)

   596 		mask = E1000_NVM_CFG_DONE_PORT_1;

   597 

   598 	while (timeout) {

   599 		if (er32(EEMNGCTL) & mask)

   600 			break;

   601 		msleep(1);

   602 		timeout--;

   603 	}

   604 	if (!timeout) {

   605 		hw_dbg(hw, "MNG configuration cycle has not completed.\n");

   606 		return -E1000_ERR_RESET;

   607 	}

   608 

   609 	return 0;

   610 }

   611 

   612 /**

   613  *  e1000_phy_force_speed_duplex_80003es2lan - Force PHY speed and duplex

   614  *  @hw: pointer to the HW structure

   615  *

   616  *  Force the speed and duplex settings onto the PHY.  This is a

   617  *  function pointer entry point called by the phy module.

   618  **/

   619 static s32 e1000_phy_force_speed_duplex_80003es2lan(struct e1000_hw *hw)

   620 {

   621 	s32 ret_val;

   622 	u16 phy_data;

   623 	bool link;

   624 

   625 	/*

   626 	 * Clear Auto-Crossover to force MDI manually.  M88E1000 requires MDI

   627 	 * forced whenever speed and duplex are forced.

   628 	 */

   629 	ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);

   630 	if (ret_val)

   631 		return ret_val;

   632 

   633 	phy_data &= ~GG82563_PSCR_CROSSOVER_MODE_AUTO;

   634 	ret_val = e1e_wphy(hw, GG82563_PHY_SPEC_CTRL, phy_data);

   635 	if (ret_val)

   636 		return ret_val;

   637 

   638 	hw_dbg(hw, "GG82563 PSCR: %X\n", phy_data);

   639 

   640 	ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_data);

   641 	if (ret_val)

   642 		return ret_val;

   643 

   644 	e1000e_phy_force_speed_duplex_setup(hw, &phy_data);

   645 

   646 	/* Reset the phy to commit changes. */

   647 	phy_data |= MII_CR_RESET;

   648 

   649 	ret_val = e1e_wphy(hw, PHY_CONTROL, phy_data);

   650 	if (ret_val)

   651 		return ret_val;

   652 

   653 	udelay(1);

   654 

   655 	if (hw->phy.autoneg_wait_to_complete) {

   656 		hw_dbg(hw, "Waiting for forced speed/duplex link "

   657 			 "on GG82563 phy.\n");

   658 

   659 		ret_val = e1000e_phy_has_link_generic(hw, PHY_FORCE_LIMIT,

   660 						     100000, &link);

   661 		if (ret_val)

   662 			return ret_val;

   663 

   664 		if (!link) {

   665 			/*

   666 			 * We didn't get link.

   667 			 * Reset the DSP and cross our fingers.

   668 			 */

   669 			ret_val = e1000e_phy_reset_dsp(hw);

   670 			if (ret_val)

   671 				return ret_val;

   672 		}

   673 

   674 		/* Try once more */

   675 		ret_val = e1000e_phy_has_link_generic(hw, PHY_FORCE_LIMIT,

   676 						     100000, &link);

   677 		if (ret_val)

   678 			return ret_val;

   679 	}

   680 

   681 	ret_val = e1e_rphy(hw, GG82563_PHY_MAC_SPEC_CTRL, &phy_data);

   682 	if (ret_val)

   683 		return ret_val;

   684 

   685 	/*

   686 	 * Resetting the phy means we need to verify the TX_CLK corresponds

   687 	 * to the link speed.  10Mbps -> 2.5MHz, else 25MHz.

   688 	 */

   689 	phy_data &= ~GG82563_MSCR_TX_CLK_MASK;

   690 	if (hw->mac.forced_speed_duplex & E1000_ALL_10_SPEED)

   691 		phy_data |= GG82563_MSCR_TX_CLK_10MBPS_2_5;

   692 	else

   693 		phy_data |= GG82563_MSCR_TX_CLK_100MBPS_25;

   694 

   695 	/*

   696 	 * In addition, we must re-enable CRS on Tx for both half and full

   697 	 * duplex.

   698 	 */

   699 	phy_data |= GG82563_MSCR_ASSERT_CRS_ON_TX;

   700 	ret_val = e1e_wphy(hw, GG82563_PHY_MAC_SPEC_CTRL, phy_data);

   701 

   702 	return ret_val;

   703 }

   704 

   705 /**

   706  *  e1000_get_cable_length_80003es2lan - Set approximate cable length

   707  *  @hw: pointer to the HW structure

   708  *

   709  *  Find the approximate cable length as measured by the GG82563 PHY.

   710  *  This is a function pointer entry point called by the phy module.

   711  **/

   712 static s32 e1000_get_cable_length_80003es2lan(struct e1000_hw *hw)

   713 {

   714 	struct e1000_phy_info *phy = &hw->phy;

   715 	s32 ret_val;

   716 	u16 phy_data;

   717 	u16 index;

   718 

   719 	ret_val = e1e_rphy(hw, GG82563_PHY_DSP_DISTANCE, &phy_data);

   720 	if (ret_val)

   721 		return ret_val;

   722 

   723 	index = phy_data & GG82563_DSPD_CABLE_LENGTH;

   724 	phy->min_cable_length = e1000_gg82563_cable_length_table[index];

   725 	phy->max_cable_length = e1000_gg82563_cable_length_table[index+5];

   726 

   727 	phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2;

   728 

   729 	return 0;

   730 }

   731 

   732 /**

   733  *  e1000_get_link_up_info_80003es2lan - Report speed and duplex

   734  *  @hw: pointer to the HW structure

   735  *  @speed: pointer to speed buffer

   736  *  @duplex: pointer to duplex buffer

   737  *

   738  *  Retrieve the current speed and duplex configuration.

   739  *  This is a function pointer entry point called by the api module.

   740  **/

   741 static s32 e1000_get_link_up_info_80003es2lan(struct e1000_hw *hw, u16 *speed,

   742 					      u16 *duplex)

   743 {

   744 	s32 ret_val;

   745 

   746 	if (hw->phy.media_type == e1000_media_type_copper) {

   747 		ret_val = e1000e_get_speed_and_duplex_copper(hw,

   748 								    speed,

   749 								    duplex);

   750 		hw->phy.ops.cfg_on_link_up(hw);

   751 	} else {

   752 		ret_val = e1000e_get_speed_and_duplex_fiber_serdes(hw,

   753 								  speed,

   754 								  duplex);

   755 	}

   756 

   757 	return ret_val;

   758 }

   759 

   760 /**

   761  *  e1000_reset_hw_80003es2lan - Reset the ESB2 controller

   762  *  @hw: pointer to the HW structure

   763  *

   764  *  Perform a global reset to the ESB2 controller.

   765  *  This is a function pointer entry point called by the api module.

   766  **/

   767 static s32 e1000_reset_hw_80003es2lan(struct e1000_hw *hw)

   768 {

   769 	u32 ctrl;

   770 	u32 icr;

   771 	s32 ret_val;

   772 

   773 	/*

   774 	 * Prevent the PCI-E bus from sticking if there is no TLP connection

   775 	 * on the last TLP read/write transaction when MAC is reset.

   776 	 */

   777 	ret_val = e1000e_disable_pcie_master(hw);

   778 	if (ret_val)

   779 		hw_dbg(hw, "PCI-E Master disable polling has failed.\n");

   780 

   781 	hw_dbg(hw, "Masking off all interrupts\n");

   782 	ew32(IMC, 0xffffffff);

   783 

   784 	ew32(RCTL, 0);

   785 	ew32(TCTL, E1000_TCTL_PSP);

   786 	e1e_flush();

   787 

   788 	msleep(10);

   789 

   790 	ctrl = er32(CTRL);

   791 

   792 	ret_val = e1000_acquire_phy_80003es2lan(hw);

   793 	hw_dbg(hw, "Issuing a global reset to MAC\n");

   794 	ew32(CTRL, ctrl | E1000_CTRL_RST);

   795 	e1000_release_phy_80003es2lan(hw);

   796 

   797 	ret_val = e1000e_get_auto_rd_done(hw);

   798 	if (ret_val)

   799 		/* We don't want to continue accessing MAC registers. */

   800 		return ret_val;

   801 

   802 	/* Clear any pending interrupt events. */

   803 	ew32(IMC, 0xffffffff);

   804 	icr = er32(ICR);

   805 

   806 	return 0;

   807 }

   808 

   809 /**

   810  *  e1000_init_hw_80003es2lan - Initialize the ESB2 controller

   811  *  @hw: pointer to the HW structure

   812  *

   813  *  Initialize the hw bits, LED, VFTA, MTA, link and hw counters.

   814  *  This is a function pointer entry point called by the api module.

   815  **/

   816 static s32 e1000_init_hw_80003es2lan(struct e1000_hw *hw)

   817 {

   818 	struct e1000_mac_info *mac = &hw->mac;

   819 	u32 reg_data;

   820 	s32 ret_val;

   821 	u16 i;

   822 

   823 	e1000_initialize_hw_bits_80003es2lan(hw);

   824 

   825 	/* Initialize identification LED */

   826 	ret_val = e1000e_id_led_init(hw);

   827 	if (ret_val) {

   828 		hw_dbg(hw, "Error initializing identification LED\n");

   829 		return ret_val;

   830 	}

   831 

   832 	/* Disabling VLAN filtering */

   833 	hw_dbg(hw, "Initializing the IEEE VLAN\n");

   834 	e1000e_clear_vfta(hw);

   835 

   836 	/* Setup the receive address. */

   837 	e1000e_init_rx_addrs(hw, mac->rar_entry_count);

   838 

   839 	/* Zero out the Multicast HASH table */

   840 	hw_dbg(hw, "Zeroing the MTA\n");

   841 	for (i = 0; i < mac->mta_reg_count; i++)

   842 		E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0);

   843 

   844 	/* Setup link and flow control */

   845 	ret_val = e1000e_setup_link(hw);

   846 

   847 	/* Set the transmit descriptor write-back policy */

   848 	reg_data = er32(TXDCTL(0));

   849 	reg_data = (reg_data & ~E1000_TXDCTL_WTHRESH) |

   850 		   E1000_TXDCTL_FULL_TX_DESC_WB | E1000_TXDCTL_COUNT_DESC;

   851 	ew32(TXDCTL(0), reg_data);

   852 

   853 	/* ...for both queues. */

   854 	reg_data = er32(TXDCTL(1));

   855 	reg_data = (reg_data & ~E1000_TXDCTL_WTHRESH) |

   856 		   E1000_TXDCTL_FULL_TX_DESC_WB | E1000_TXDCTL_COUNT_DESC;

   857 	ew32(TXDCTL(1), reg_data);

   858 

   859 	/* Enable retransmit on late collisions */

   860 	reg_data = er32(TCTL);

   861 	reg_data |= E1000_TCTL_RTLC;

   862 	ew32(TCTL, reg_data);

   863 

   864 	/* Configure Gigabit Carry Extend Padding */

   865 	reg_data = er32(TCTL_EXT);

   866 	reg_data &= ~E1000_TCTL_EXT_GCEX_MASK;

   867 	reg_data |= DEFAULT_TCTL_EXT_GCEX_80003ES2LAN;

   868 	ew32(TCTL_EXT, reg_data);

   869 

   870 	/* Configure Transmit Inter-Packet Gap */

   871 	reg_data = er32(TIPG);

   872 	reg_data &= ~E1000_TIPG_IPGT_MASK;

   873 	reg_data |= DEFAULT_TIPG_IPGT_1000_80003ES2LAN;

   874 	ew32(TIPG, reg_data);

   875 

   876 	reg_data = E1000_READ_REG_ARRAY(hw, E1000_FFLT, 0x0001);

   877 	reg_data &= ~0x00100000;

   878 	E1000_WRITE_REG_ARRAY(hw, E1000_FFLT, 0x0001, reg_data);

   879 

   880 	/*

   881 	 * Clear all of the statistics registers (clear on read).  It is

   882 	 * important that we do this after we have tried to establish link

   883 	 * because the symbol error count will increment wildly if there

   884 	 * is no link.

   885 	 */

   886 	e1000_clear_hw_cntrs_80003es2lan(hw);

   887 

   888 	return ret_val;

   889 }

   890 

   891 /**

   892  *  e1000_initialize_hw_bits_80003es2lan - Init hw bits of ESB2

   893  *  @hw: pointer to the HW structure

   894  *

   895  *  Initializes required hardware-dependent bits needed for normal operation.

   896  **/

   897 static void e1000_initialize_hw_bits_80003es2lan(struct e1000_hw *hw)

   898 {

   899 	u32 reg;

   900 

   901 	/* Transmit Descriptor Control 0 */

   902 	reg = er32(TXDCTL(0));

   903 	reg |= (1 << 22);

   904 	ew32(TXDCTL(0), reg);

   905 

   906 	/* Transmit Descriptor Control 1 */

   907 	reg = er32(TXDCTL(1));

   908 	reg |= (1 << 22);

   909 	ew32(TXDCTL(1), reg);

   910 

   911 	/* Transmit Arbitration Control 0 */

   912 	reg = er32(TARC(0));

   913 	reg &= ~(0xF << 27); /* 30:27 */

   914 	if (hw->phy.media_type != e1000_media_type_copper)

   915 		reg &= ~(1 << 20);

   916 	ew32(TARC(0), reg);

   917 

   918 	/* Transmit Arbitration Control 1 */

   919 	reg = er32(TARC(1));

   920 	if (er32(TCTL) & E1000_TCTL_MULR)

   921 		reg &= ~(1 << 28);

   922 	else

   923 		reg |= (1 << 28);

   924 	ew32(TARC(1), reg);

   925 }

   926 

   927 /**

   928  *  e1000_copper_link_setup_gg82563_80003es2lan - Configure GG82563 Link

   929  *  @hw: pointer to the HW structure

   930  *

   931  *  Setup some GG82563 PHY registers for obtaining link

   932  **/

   933 static s32 e1000_copper_link_setup_gg82563_80003es2lan(struct e1000_hw *hw)

   934 {

   935 	struct e1000_phy_info *phy = &hw->phy;

   936 	s32 ret_val;

   937 	u32 ctrl_ext;

   938 	u16 data;

   939 

   940 	ret_val = e1e_rphy(hw, GG82563_PHY_MAC_SPEC_CTRL, &data);

   941 	if (ret_val)

   942 		return ret_val;

   943 

   944 	data |= GG82563_MSCR_ASSERT_CRS_ON_TX;

   945 	/* Use 25MHz for both link down and 1000Base-T for Tx clock. */

   946 	data |= GG82563_MSCR_TX_CLK_1000MBPS_25;

   947 

   948 	ret_val = e1e_wphy(hw, GG82563_PHY_MAC_SPEC_CTRL, data);

   949 	if (ret_val)

   950 		return ret_val;

   951 

   952 	/*

   953 	 * Options:

   954 	 *   MDI/MDI-X = 0 (default)

   955 	 *   0 - Auto for all speeds

   956 	 *   1 - MDI mode

   957 	 *   2 - MDI-X mode

   958 	 *   3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)

   959 	 */

   960 	ret_val = e1e_rphy(hw, GG82563_PHY_SPEC_CTRL, &data);

   961 	if (ret_val)

   962 		return ret_val;

   963 

   964 	data &= ~GG82563_PSCR_CROSSOVER_MODE_MASK;

   965 

   966 	switch (phy->mdix) {

   967 	case 1:

   968 		data |= GG82563_PSCR_CROSSOVER_MODE_MDI;

   969 		break;

   970 	case 2:

   971 		data |= GG82563_PSCR_CROSSOVER_MODE_MDIX;

   972 		break;

   973 	case 0:

   974 	default:

   975 		data |= GG82563_PSCR_CROSSOVER_MODE_AUTO;

   976 		break;

   977 	}

   978 

   979 	/*

   980 	 * Options:

   981 	 *   disable_polarity_correction = 0 (default)

   982 	 *       Automatic Correction for Reversed Cable Polarity

   983 	 *   0 - Disabled

   984 	 *   1 - Enabled

   985 	 */

   986 	data &= ~GG82563_PSCR_POLARITY_REVERSAL_DISABLE;

   987 	if (phy->disable_polarity_correction)

   988 		data |= GG82563_PSCR_POLARITY_REVERSAL_DISABLE;

   989 

   990 	ret_val = e1e_wphy(hw, GG82563_PHY_SPEC_CTRL, data);

   991 	if (ret_val)

   992 		return ret_val;

   993 

   994 	/* SW Reset the PHY so all changes take effect */

   995 	ret_val = e1000e_commit_phy(hw);

   996 	if (ret_val) {

   997 		hw_dbg(hw, "Error Resetting the PHY\n");

   998 		return ret_val;

   999 	}

  1000 

  1001 	/* Bypass Rx and Tx FIFO's */

  1002 	ret_val = e1000_write_kmrn_reg_80003es2lan(hw,

  1003 					E1000_KMRNCTRLSTA_OFFSET_FIFO_CTRL,

  1004 					E1000_KMRNCTRLSTA_FIFO_CTRL_RX_BYPASS |

  1005 					E1000_KMRNCTRLSTA_FIFO_CTRL_TX_BYPASS);

  1006 	if (ret_val)

  1007 		return ret_val;

  1008 

  1009 	ret_val = e1000_read_kmrn_reg_80003es2lan(hw,

  1010 				       E1000_KMRNCTRLSTA_OFFSET_MAC2PHY_OPMODE,

  1011 				       &data);

  1012 	if (ret_val)

  1013 		return ret_val;

  1014 	data |= E1000_KMRNCTRLSTA_OPMODE_E_IDLE;

  1015 	ret_val = e1000_write_kmrn_reg_80003es2lan(hw,

  1016 					E1000_KMRNCTRLSTA_OFFSET_MAC2PHY_OPMODE,

  1017 					data);

  1018 	if (ret_val)

  1019 		return ret_val;

  1020 

  1021 	ret_val = e1e_rphy(hw, GG82563_PHY_SPEC_CTRL_2, &data);

  1022 	if (ret_val)

  1023 		return ret_val;

  1024 

  1025 	data &= ~GG82563_PSCR2_REVERSE_AUTO_NEG;

  1026 	ret_val = e1e_wphy(hw, GG82563_PHY_SPEC_CTRL_2, data);

  1027 	if (ret_val)

  1028 		return ret_val;

  1029 

  1030 	ctrl_ext = er32(CTRL_EXT);

  1031 	ctrl_ext &= ~(E1000_CTRL_EXT_LINK_MODE_MASK);

  1032 	ew32(CTRL_EXT, ctrl_ext);

  1033 

  1034 	ret_val = e1e_rphy(hw, GG82563_PHY_PWR_MGMT_CTRL, &data);

  1035 	if (ret_val)

  1036 		return ret_val;

  1037 

  1038 	/*

  1039 	 * Do not init these registers when the HW is in IAMT mode, since the

  1040 	 * firmware will have already initialized them.  We only initialize

  1041 	 * them if the HW is not in IAMT mode.

  1042 	 */

  1043 	if (!e1000e_check_mng_mode(hw)) {

  1044 		/* Enable Electrical Idle on the PHY */

  1045 		data |= GG82563_PMCR_ENABLE_ELECTRICAL_IDLE;

  1046 		ret_val = e1e_wphy(hw, GG82563_PHY_PWR_MGMT_CTRL, data);

  1047 		if (ret_val)

  1048 			return ret_val;

  1049 

  1050 		ret_val = e1e_rphy(hw, GG82563_PHY_KMRN_MODE_CTRL, &data);

  1051 		if (ret_val)

  1052 			return ret_val;

  1053 

  1054 		data &= ~GG82563_KMCR_PASS_FALSE_CARRIER;

  1055 		ret_val = e1e_wphy(hw, GG82563_PHY_KMRN_MODE_CTRL, data);

  1056 		if (ret_val)

  1057 			return ret_val;

  1058 	}

  1059 

  1060 	/*

  1061 	 * Workaround: Disable padding in Kumeran interface in the MAC

  1062 	 * and in the PHY to avoid CRC errors.

  1063 	 */

  1064 	ret_val = e1e_rphy(hw, GG82563_PHY_INBAND_CTRL, &data);

  1065 	if (ret_val)

  1066 		return ret_val;

  1067 

  1068 	data |= GG82563_ICR_DIS_PADDING;

  1069 	ret_val = e1e_wphy(hw, GG82563_PHY_INBAND_CTRL, data);

  1070 	if (ret_val)

  1071 		return ret_val;

  1072 

  1073 	return 0;

  1074 }

  1075 

  1076 /**

  1077  *  e1000_setup_copper_link_80003es2lan - Setup Copper Link for ESB2

  1078  *  @hw: pointer to the HW structure

  1079  *

  1080  *  Essentially a wrapper for setting up all things "copper" related.

  1081  *  This is a function pointer entry point called by the mac module.

  1082  **/

  1083 static s32 e1000_setup_copper_link_80003es2lan(struct e1000_hw *hw)

  1084 {

  1085 	u32 ctrl;

  1086 	s32 ret_val;

  1087 	u16 reg_data;

  1088 

  1089 	ctrl = er32(CTRL);

  1090 	ctrl |= E1000_CTRL_SLU;

  1091 	ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);

  1092 	ew32(CTRL, ctrl);

  1093 

  1094 	/*

  1095 	 * Set the mac to wait the maximum time between each

  1096 	 * iteration and increase the max iterations when

  1097 	 * polling the phy; this fixes erroneous timeouts at 10Mbps.

  1098 	 */

  1099 	ret_val = e1000_write_kmrn_reg_80003es2lan(hw, GG82563_REG(0x34, 4),

  1100 	                                           0xFFFF);

  1101 	if (ret_val)

  1102 		return ret_val;

  1103 	ret_val = e1000_read_kmrn_reg_80003es2lan(hw, GG82563_REG(0x34, 9),

  1104 	                                          &reg_data);

  1105 	if (ret_val)

  1106 		return ret_val;

  1107 	reg_data |= 0x3F;

  1108 	ret_val = e1000_write_kmrn_reg_80003es2lan(hw, GG82563_REG(0x34, 9),

  1109 	                                           reg_data);

  1110 	if (ret_val)

  1111 		return ret_val;

  1112 	ret_val = e1000_read_kmrn_reg_80003es2lan(hw,

  1113 				      E1000_KMRNCTRLSTA_OFFSET_INB_CTRL,

  1114 				      &reg_data);

  1115 	if (ret_val)

  1116 		return ret_val;

  1117 	reg_data |= E1000_KMRNCTRLSTA_INB_CTRL_DIS_PADDING;

  1118 	ret_val = e1000_write_kmrn_reg_80003es2lan(hw,

  1119 					E1000_KMRNCTRLSTA_OFFSET_INB_CTRL,

  1120 					reg_data);

  1121 	if (ret_val)

  1122 		return ret_val;

  1123 

  1124 	ret_val = e1000_copper_link_setup_gg82563_80003es2lan(hw);

  1125 	if (ret_val)

  1126 		return ret_val;

  1127 

  1128 	ret_val = e1000e_setup_copper_link(hw);

  1129 

  1130 	return 0;

  1131 }

  1132 

  1133 /**

  1134  *  e1000_cfg_on_link_up_80003es2lan - es2 link configuration after link-up

  1135  *  @hw: pointer to the HW structure

  1136  *  @duplex: current duplex setting