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fuchsia / fuchsia / 83854f31e881f0f9aa2bd848a84a94e01fb09dd9 / . / zircon / third_party / dev / ethernet / e1000 / e1000_ich8lan.c
blob: 00ce2b1fd07213e371f9ac488a89244fd45341c2 [file] [log] [blame]
/******************************************************************************
SPDX-License-Identifier: BSD-3-Clause
Copyright (c) 2001-2015, Intel Corporation
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the Intel Corporation nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
******************************************************************************/
/*$FreeBSD$*/
/* 82562G 10/100 Network Connection
* 82562G-2 10/100 Network Connection
* 82562GT 10/100 Network Connection
* 82562GT-2 10/100 Network Connection
* 82562V 10/100 Network Connection
* 82562V-2 10/100 Network Connection
* 82566DC-2 Gigabit Network Connection
* 82566DC Gigabit Network Connection
* 82566DM-2 Gigabit Network Connection
* 82566DM Gigabit Network Connection
* 82566MC Gigabit Network Connection
* 82566MM Gigabit Network Connection
* 82567LM Gigabit Network Connection
* 82567LF Gigabit Network Connection
* 82567V Gigabit Network Connection
* 82567LM-2 Gigabit Network Connection
* 82567LF-2 Gigabit Network Connection
* 82567V-2 Gigabit Network Connection
* 82567LF-3 Gigabit Network Connection
* 82567LM-3 Gigabit Network Connection
* 82567LM-4 Gigabit Network Connection
* 82577LM Gigabit Network Connection
* 82577LC Gigabit Network Connection
* 82578DM Gigabit Network Connection
* 82578DC Gigabit Network Connection
* 82579LM Gigabit Network Connection
* 82579V Gigabit Network Connection
* Ethernet Connection I217-LM
* Ethernet Connection I217-V
* Ethernet Connection I218-V
* Ethernet Connection I218-LM
* Ethernet Connection (2) I218-LM
* Ethernet Connection (2) I218-V
* Ethernet Connection (3) I218-LM
* Ethernet Connection (3) I218-V
*/
#include "e1000_api.h"
static s32 e1000_acquire_swflag_ich8lan(struct e1000_hw *hw);
static void e1000_release_swflag_ich8lan(struct e1000_hw *hw);
static s32 e1000_acquire_nvm_ich8lan(struct e1000_hw *hw);
static void e1000_release_nvm_ich8lan(struct e1000_hw *hw);
static bool e1000_check_mng_mode_ich8lan(struct e1000_hw *hw);
static bool e1000_check_mng_mode_pchlan(struct e1000_hw *hw);
static int e1000_rar_set_pch2lan(struct e1000_hw *hw, u8 *addr, u32 index);
static int e1000_rar_set_pch_lpt(struct e1000_hw *hw, u8 *addr, u32 index);
static s32 e1000_sw_lcd_config_ich8lan(struct e1000_hw *hw);
static void e1000_update_mc_addr_list_pch2lan(struct e1000_hw *hw,
u8 *mc_addr_list,
u32 mc_addr_count);
static s32 e1000_check_reset_block_ich8lan(struct e1000_hw *hw);
static s32 e1000_phy_hw_reset_ich8lan(struct e1000_hw *hw);
static s32 e1000_set_lplu_state_pchlan(struct e1000_hw *hw, bool active);
static s32 e1000_set_d0_lplu_state_ich8lan(struct e1000_hw *hw,
bool active);
static s32 e1000_set_d3_lplu_state_ich8lan(struct e1000_hw *hw,
bool active);
static s32 e1000_read_nvm_ich8lan(struct e1000_hw *hw, u16 offset,
u16 words, u16 *data);
static s32 e1000_read_nvm_spt(struct e1000_hw *hw, u16 offset, u16 words,
u16 *data);
static s32 e1000_write_nvm_ich8lan(struct e1000_hw *hw, u16 offset,
u16 words, u16 *data);
static s32 e1000_validate_nvm_checksum_ich8lan(struct e1000_hw *hw);
static s32 e1000_update_nvm_checksum_ich8lan(struct e1000_hw *hw);
static s32 e1000_update_nvm_checksum_spt(struct e1000_hw *hw);
static s32 e1000_valid_led_default_ich8lan(struct e1000_hw *hw,
u16 *data);
static s32 e1000_id_led_init_pchlan(struct e1000_hw *hw);
static s32 e1000_get_bus_info_ich8lan(struct e1000_hw *hw);
static s32 e1000_reset_hw_ich8lan(struct e1000_hw *hw);
static s32 e1000_init_hw_ich8lan(struct e1000_hw *hw);
static s32 e1000_setup_link_ich8lan(struct e1000_hw *hw);
static s32 e1000_setup_copper_link_ich8lan(struct e1000_hw *hw);
static s32 e1000_setup_copper_link_pch_lpt(struct e1000_hw *hw);
static s32 e1000_get_link_up_info_ich8lan(struct e1000_hw *hw,
u16 *speed, u16 *duplex);
static s32 e1000_cleanup_led_ich8lan(struct e1000_hw *hw);
static s32 e1000_led_on_ich8lan(struct e1000_hw *hw);
static s32 e1000_led_off_ich8lan(struct e1000_hw *hw);
static s32 e1000_k1_gig_workaround_hv(struct e1000_hw *hw, bool link);
static s32 e1000_setup_led_pchlan(struct e1000_hw *hw);
static s32 e1000_cleanup_led_pchlan(struct e1000_hw *hw);
static s32 e1000_led_on_pchlan(struct e1000_hw *hw);
static s32 e1000_led_off_pchlan(struct e1000_hw *hw);
static void e1000_clear_hw_cntrs_ich8lan(struct e1000_hw *hw);
static s32 e1000_erase_flash_bank_ich8lan(struct e1000_hw *hw, u32 bank);
static void e1000_initialize_hw_bits_ich8lan(struct e1000_hw *hw);
static s32 e1000_kmrn_lock_loss_workaround_ich8lan(struct e1000_hw *hw);
static s32 e1000_read_flash_byte_ich8lan(struct e1000_hw *hw,
u32 offset, u8 *data);
static s32 e1000_read_flash_data_ich8lan(struct e1000_hw *hw, u32 offset,
u8 size, u16 *data);
static s32 e1000_read_flash_data32_ich8lan(struct e1000_hw *hw, u32 offset,
u32 *data);
static s32 e1000_read_flash_dword_ich8lan(struct e1000_hw *hw,
u32 offset, u32 *data);
static s32 e1000_write_flash_data32_ich8lan(struct e1000_hw *hw,
u32 offset, u32 data);
static s32 e1000_retry_write_flash_dword_ich8lan(struct e1000_hw *hw,
u32 offset, u32 dword);
static s32 e1000_read_flash_word_ich8lan(struct e1000_hw *hw,
u32 offset, u16 *data);
static s32 e1000_retry_write_flash_byte_ich8lan(struct e1000_hw *hw,
u32 offset, u8 byte);
static s32 e1000_get_cfg_done_ich8lan(struct e1000_hw *hw);
static void e1000_power_down_phy_copper_ich8lan(struct e1000_hw *hw);
static s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw);
static s32 e1000_set_mdio_slow_mode_hv(struct e1000_hw *hw);
static s32 e1000_k1_workaround_lv(struct e1000_hw *hw);
static void e1000_gate_hw_phy_config_ich8lan(struct e1000_hw *hw, bool gate);
static s32 e1000_set_obff_timer_pch_lpt(struct e1000_hw *hw, u32 itr);
/* ICH GbE Flash Hardware Sequencing Flash Status Register bit breakdown */
/* Offset 04h HSFSTS */
union ich8_hws_flash_status {
struct ich8_hsfsts {
u16 flcdone:1; /* bit 0 Flash Cycle Done */
u16 flcerr:1; /* bit 1 Flash Cycle Error */
u16 dael:1; /* bit 2 Direct Access error Log */
u16 berasesz:2; /* bit 4:3 Sector Erase Size */
u16 flcinprog:1; /* bit 5 flash cycle in Progress */
u16 reserved1:2; /* bit 13:6 Reserved */
u16 reserved2:6; /* bit 13:6 Reserved */
u16 fldesvalid:1; /* bit 14 Flash Descriptor Valid */
u16 flockdn:1; /* bit 15 Flash Config Lock-Down */
} hsf_status;
u16 regval;
};
/* ICH GbE Flash Hardware Sequencing Flash control Register bit breakdown */
/* Offset 06h FLCTL */
union ich8_hws_flash_ctrl {
struct ich8_hsflctl {
u16 flcgo:1; /* 0 Flash Cycle Go */
u16 flcycle:2; /* 2:1 Flash Cycle */
u16 reserved:5; /* 7:3 Reserved */
u16 fldbcount:2; /* 9:8 Flash Data Byte Count */
u16 flockdn:6; /* 15:10 Reserved */
} hsf_ctrl;
u16 regval;
};
/* ICH Flash Region Access Permissions */
union ich8_hws_flash_regacc {
struct ich8_flracc {
u32 grra:8; /* 0:7 GbE region Read Access */
u32 grwa:8; /* 8:15 GbE region Write Access */
u32 gmrag:8; /* 23:16 GbE Master Read Access Grant */
u32 gmwag:8; /* 31:24 GbE Master Write Access Grant */
} hsf_flregacc;
u16 regval;
};
/**
* e1000_phy_is_accessible_pchlan - Check if able to access PHY registers
* @hw: pointer to the HW structure
*
* Test access to the PHY registers by reading the PHY ID registers. If
* the PHY ID is already known (e.g. resume path) compare it with known ID,
* otherwise assume the read PHY ID is correct if it is valid.
*
* Assumes the sw/fw/hw semaphore is already acquired.
**/
static bool e1000_phy_is_accessible_pchlan(struct e1000_hw *hw)
{
u16 phy_reg = 0;
u32 phy_id = 0;
s32 ret_val = 0;
u16 retry_count;
u32 mac_reg = 0;
for (retry_count = 0; retry_count < 2; retry_count++) {
ret_val = hw->phy.ops.read_reg_locked(hw, PHY_ID1, &phy_reg);
if (ret_val || (phy_reg == 0xFFFF))
continue;
phy_id = (u32)(phy_reg << 16);
ret_val = hw->phy.ops.read_reg_locked(hw, PHY_ID2, &phy_reg);
if (ret_val || (phy_reg == 0xFFFF)) {
phy_id = 0;
continue;
}
phy_id |= (u32)(phy_reg & PHY_REVISION_MASK);
break;
}
if (hw->phy.id) {
if (hw->phy.id == phy_id)
goto out;
} else if (phy_id) {
hw->phy.id = phy_id;
hw->phy.revision = (u32)(phy_reg & ~PHY_REVISION_MASK);
goto out;
}
/* In case the PHY needs to be in mdio slow mode,
* set slow mode and try to get the PHY id again.
*/
if (hw->mac.type < e1000_pch_lpt) {
hw->phy.ops.release(hw);
ret_val = e1000_set_mdio_slow_mode_hv(hw);
if (!ret_val)
ret_val = e1000_get_phy_id(hw);
hw->phy.ops.acquire(hw);
}
if (ret_val)
return FALSE;
out:
if (hw->mac.type >= e1000_pch_lpt) {
/* Only unforce SMBus if ME is not active */
if (!(E1000_READ_REG(hw, E1000_FWSM) &
E1000_ICH_FWSM_FW_VALID)) {
/* Unforce SMBus mode in PHY */
hw->phy.ops.read_reg_locked(hw, CV_SMB_CTRL, &phy_reg);
phy_reg &= ~CV_SMB_CTRL_FORCE_SMBUS;
hw->phy.ops.write_reg_locked(hw, CV_SMB_CTRL, phy_reg);
/* Unforce SMBus mode in MAC */
mac_reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
mac_reg &= ~E1000_CTRL_EXT_FORCE_SMBUS;
E1000_WRITE_REG(hw, E1000_CTRL_EXT, mac_reg);
}
}
return TRUE;
}
/**
* e1000_toggle_lanphypc_pch_lpt - toggle the LANPHYPC pin value
* @hw: pointer to the HW structure
*
* Toggling the LANPHYPC pin value fully power-cycles the PHY and is
* used to reset the PHY to a quiescent state when necessary.
**/
static void e1000_toggle_lanphypc_pch_lpt(struct e1000_hw *hw)
{
u32 mac_reg;
DEBUGFUNC("e1000_toggle_lanphypc_pch_lpt");
/* Set Phy Config Counter to 50msec */
mac_reg = E1000_READ_REG(hw, E1000_FEXTNVM3);
mac_reg &= ~E1000_FEXTNVM3_PHY_CFG_COUNTER_MASK;
mac_reg |= E1000_FEXTNVM3_PHY_CFG_COUNTER_50MSEC;
E1000_WRITE_REG(hw, E1000_FEXTNVM3, mac_reg);
/* Toggle LANPHYPC Value bit */
mac_reg = E1000_READ_REG(hw, E1000_CTRL);
mac_reg |= E1000_CTRL_LANPHYPC_OVERRIDE;
mac_reg &= ~E1000_CTRL_LANPHYPC_VALUE;
E1000_WRITE_REG(hw, E1000_CTRL, mac_reg);
E1000_WRITE_FLUSH(hw);
msec_delay(1);
mac_reg &= ~E1000_CTRL_LANPHYPC_OVERRIDE;
E1000_WRITE_REG(hw, E1000_CTRL, mac_reg);
E1000_WRITE_FLUSH(hw);
if (hw->mac.type < e1000_pch_lpt) {
msec_delay(50);
} else {
u16 count = 20;
do {
msec_delay(5);
} while (!(E1000_READ_REG(hw, E1000_CTRL_EXT) &
E1000_CTRL_EXT_LPCD) && count--);
msec_delay(30);
}
}
/**
* e1000_init_phy_workarounds_pchlan - PHY initialization workarounds
* @hw: pointer to the HW structure
*
* Workarounds/flow necessary for PHY initialization during driver load
* and resume paths.
**/
static s32 e1000_init_phy_workarounds_pchlan(struct e1000_hw *hw)
{
u32 mac_reg, fwsm = E1000_READ_REG(hw, E1000_FWSM);
s32 ret_val;
DEBUGFUNC("e1000_init_phy_workarounds_pchlan");
/* Gate automatic PHY configuration by hardware on managed and
* non-managed 82579 and newer adapters.
*/
e1000_gate_hw_phy_config_ich8lan(hw, TRUE);
/* It is not possible to be certain of the current state of ULP
* so forcibly disable it.
*/
hw->dev_spec.ich8lan.ulp_state = e1000_ulp_state_unknown;
e1000_disable_ulp_lpt_lp(hw, TRUE);
ret_val = hw->phy.ops.acquire(hw);
if (ret_val) {
DEBUGOUT("Failed to initialize PHY flow\n");
goto out;
}
/* The MAC-PHY interconnect may be in SMBus mode. If the PHY is
* inaccessible and resetting the PHY is not blocked, toggle the
* LANPHYPC Value bit to force the interconnect to PCIe mode.
*/
switch (hw->mac.type) {
case e1000_pch_lpt:
case e1000_pch_spt:
case e1000_pch_cnp:
case e1000_pch_tgp:
if (e1000_phy_is_accessible_pchlan(hw))
break;
/* Before toggling LANPHYPC, see if PHY is accessible by
* forcing MAC to SMBus mode first.
*/
mac_reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
mac_reg |= E1000_CTRL_EXT_FORCE_SMBUS;
E1000_WRITE_REG(hw, E1000_CTRL_EXT, mac_reg);
/* Wait 50 milliseconds for MAC to finish any retries
* that it might be trying to perform from previous
* attempts to acknowledge any phy read requests.
*/
msec_delay(50);
__FALLTHROUGH;
case e1000_pch2lan:
if (e1000_phy_is_accessible_pchlan(hw))
break;
__FALLTHROUGH;
case e1000_pchlan:
if ((hw->mac.type == e1000_pchlan) &&
(fwsm & E1000_ICH_FWSM_FW_VALID))
break;
if (hw->phy.ops.check_reset_block(hw)) {
DEBUGOUT("Required LANPHYPC toggle blocked by ME\n");
ret_val = -E1000_ERR_PHY;
break;
}
/* Toggle LANPHYPC Value bit */
e1000_toggle_lanphypc_pch_lpt(hw);
if (hw->mac.type >= e1000_pch_lpt) {
if (e1000_phy_is_accessible_pchlan(hw))
break;
/* Toggling LANPHYPC brings the PHY out of SMBus mode
* so ensure that the MAC is also out of SMBus mode
*/
mac_reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
mac_reg &= ~E1000_CTRL_EXT_FORCE_SMBUS;
E1000_WRITE_REG(hw, E1000_CTRL_EXT, mac_reg);
if (e1000_phy_is_accessible_pchlan(hw))
break;
ret_val = -E1000_ERR_PHY;
}
break;
default:
break;
}
hw->phy.ops.release(hw);
if (!ret_val) {
/* Check to see if able to reset PHY. Print error if not */
if (hw->phy.ops.check_reset_block(hw)) {
ERROR_REPORT("Reset blocked by ME\n");
goto out;
}
/* Reset the PHY before any access to it. Doing so, ensures
* that the PHY is in a known good state before we read/write
* PHY registers. The generic reset is sufficient here,
* because we haven't determined the PHY type yet.
*/
ret_val = e1000_phy_hw_reset_generic(hw);
if (ret_val)
goto out;
/* On a successful reset, possibly need to wait for the PHY
* to quiesce to an accessible state before returning control
* to the calling function. If the PHY does not quiesce, then
* return E1000E_BLK_PHY_RESET, as this is the condition that
* the PHY is in.
*/
ret_val = hw->phy.ops.check_reset_block(hw);
if (ret_val)
ERROR_REPORT("ME blocked access to PHY after reset\n");
}
out:
/* Ungate automatic PHY configuration on non-managed 82579 */
if ((hw->mac.type == e1000_pch2lan) &&
!(fwsm & E1000_ICH_FWSM_FW_VALID)) {
msec_delay(10);
e1000_gate_hw_phy_config_ich8lan(hw, FALSE);
}
return ret_val;
}
/**
* e1000_init_phy_params_pchlan - Initialize PHY function pointers
* @hw: pointer to the HW structure
*
* Initialize family-specific PHY parameters and function pointers.
**/
static s32 e1000_init_phy_params_pchlan(struct e1000_hw *hw)
{
struct e1000_phy_info *phy = &hw->phy;
s32 ret_val;
DEBUGFUNC("e1000_init_phy_params_pchlan");
phy->addr = 1;
phy->reset_delay_us = 100;
phy->ops.acquire = e1000_acquire_swflag_ich8lan;
phy->ops.check_reset_block = e1000_check_reset_block_ich8lan;
phy->ops.get_cfg_done = e1000_get_cfg_done_ich8lan;
phy->ops.set_page = e1000_set_page_igp;
phy->ops.read_reg = e1000_read_phy_reg_hv;
phy->ops.read_reg_locked = e1000_read_phy_reg_hv_locked;
phy->ops.read_reg_page = e1000_read_phy_reg_page_hv;
phy->ops.release = e1000_release_swflag_ich8lan;
phy->ops.reset = e1000_phy_hw_reset_ich8lan;
phy->ops.set_d0_lplu_state = e1000_set_lplu_state_pchlan;
phy->ops.set_d3_lplu_state = e1000_set_lplu_state_pchlan;
phy->ops.write_reg = e1000_write_phy_reg_hv;
phy->ops.write_reg_locked = e1000_write_phy_reg_hv_locked;
phy->ops.write_reg_page = e1000_write_phy_reg_page_hv;
phy->ops.power_up = e1000_power_up_phy_copper;
phy->ops.power_down = e1000_power_down_phy_copper_ich8lan;
phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
phy->id = e1000_phy_unknown;
ret_val = e1000_init_phy_workarounds_pchlan(hw);
if (ret_val)
return ret_val;
if (phy->id == e1000_phy_unknown)
switch (hw->mac.type) {
default:
ret_val = e1000_get_phy_id(hw);
if (ret_val)
return ret_val;
if ((phy->id != 0) && (phy->id != PHY_REVISION_MASK))
break;
__FALLTHROUGH;
case e1000_pch2lan:
case e1000_pch_lpt:
case e1000_pch_spt:
case e1000_pch_cnp:
case e1000_pch_tgp:
/* In case the PHY needs to be in mdio slow mode,
* set slow mode and try to get the PHY id again.
*/
ret_val = e1000_set_mdio_slow_mode_hv(hw);
if (ret_val)
return ret_val;
ret_val = e1000_get_phy_id(hw);
if (ret_val)
return ret_val;
break;
}
phy->type = e1000_get_phy_type_from_id(phy->id);
switch (phy->type) {
case e1000_phy_82577:
case e1000_phy_82579:
case e1000_phy_i217:
phy->ops.check_polarity = e1000_check_polarity_82577;
phy->ops.force_speed_duplex =
e1000_phy_force_speed_duplex_82577;
phy->ops.get_cable_length = e1000_get_cable_length_82577;
phy->ops.get_info = e1000_get_phy_info_82577;
phy->ops.commit = e1000_phy_sw_reset_generic;
break;
case e1000_phy_82578:
phy->ops.check_polarity = e1000_check_polarity_m88;
phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_m88;
phy->ops.get_cable_length = e1000_get_cable_length_m88;
phy->ops.get_info = e1000_get_phy_info_m88;
break;
default:
ret_val = -E1000_ERR_PHY;
break;
}
return ret_val;
}
/**
* e1000_init_phy_params_ich8lan - Initialize PHY function pointers
* @hw: pointer to the HW structure
*
* Initialize family-specific PHY parameters and function pointers.
**/
static s32 e1000_init_phy_params_ich8lan(struct e1000_hw *hw)
{
struct e1000_phy_info *phy = &hw->phy;
s32 ret_val;
u16 i = 0;
DEBUGFUNC("e1000_init_phy_params_ich8lan");
phy->addr = 1;
phy->reset_delay_us = 100;
phy->ops.acquire = e1000_acquire_swflag_ich8lan;
phy->ops.check_reset_block = e1000_check_reset_block_ich8lan;
phy->ops.get_cable_length = e1000_get_cable_length_igp_2;
phy->ops.get_cfg_done = e1000_get_cfg_done_ich8lan;
phy->ops.read_reg = e1000_read_phy_reg_igp;
phy->ops.release = e1000_release_swflag_ich8lan;
phy->ops.reset = e1000_phy_hw_reset_ich8lan;
phy->ops.set_d0_lplu_state = e1000_set_d0_lplu_state_ich8lan;
phy->ops.set_d3_lplu_state = e1000_set_d3_lplu_state_ich8lan;
phy->ops.write_reg = e1000_write_phy_reg_igp;
phy->ops.power_up = e1000_power_up_phy_copper;
phy->ops.power_down = e1000_power_down_phy_copper_ich8lan;
/* We may need to do this twice - once for IGP and if that fails,
* we'll set BM func pointers and try again
*/
ret_val = e1000_determine_phy_address(hw);
if (ret_val) {
phy->ops.write_reg = e1000_write_phy_reg_bm;
phy->ops.read_reg = e1000_read_phy_reg_bm;
ret_val = e1000_determine_phy_address(hw);
if (ret_val) {
DEBUGOUT("Cannot determine PHY addr. Erroring out\n");
return ret_val;
}
}
phy->id = 0;
while ((e1000_phy_unknown == e1000_get_phy_type_from_id(phy->id)) &&
(i++ < 100)) {
msec_delay(1);
ret_val = e1000_get_phy_id(hw);
if (ret_val)
return ret_val;
}
/* Verify phy id */
switch (phy->id) {
case IGP03E1000_E_PHY_ID:
phy->type = e1000_phy_igp_3;
phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
phy->ops.read_reg_locked = e1000_read_phy_reg_igp_locked;
phy->ops.write_reg_locked = e1000_write_phy_reg_igp_locked;
phy->ops.get_info = e1000_get_phy_info_igp;
phy->ops.check_polarity = e1000_check_polarity_igp;
phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_igp;
break;
case IFE_E_PHY_ID:
case IFE_PLUS_E_PHY_ID:
case IFE_C_E_PHY_ID:
phy->type = e1000_phy_ife;
phy->autoneg_mask = E1000_ALL_NOT_GIG;
phy->ops.get_info = e1000_get_phy_info_ife;
phy->ops.check_polarity = e1000_check_polarity_ife;
phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_ife;
break;
case BME1000_E_PHY_ID:
phy->type = e1000_phy_bm;
phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
phy->ops.read_reg = e1000_read_phy_reg_bm;
phy->ops.write_reg = e1000_write_phy_reg_bm;
phy->ops.commit = e1000_phy_sw_reset_generic;
phy->ops.get_info = e1000_get_phy_info_m88;
phy->ops.check_polarity = e1000_check_polarity_m88;
phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_m88;
break;
default:
return -E1000_ERR_PHY;
break;
}
return E1000_SUCCESS;
}
/**
* e1000_init_nvm_params_ich8lan - Initialize NVM function pointers
* @hw: pointer to the HW structure
*
* Initialize family-specific NVM parameters and function
* pointers.
**/
static s32 e1000_init_nvm_params_ich8lan(struct e1000_hw *hw)
{
struct e1000_nvm_info *nvm = &hw->nvm;
struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
u32 gfpreg, sector_base_addr, sector_end_addr;
u16 i;
u32 nvm_size;
DEBUGFUNC("e1000_init_nvm_params_ich8lan");
nvm->type = e1000_nvm_flash_sw;
if (hw->mac.type >= e1000_pch_spt) {
/* in SPT, gfpreg doesn't exist. NVM size is taken from the
* STRAP register. This is because in SPT the GbE Flash region
* is no longer accessed through the flash registers. Instead,
* the mechanism has changed, and the Flash region access
* registers are now implemented in GbE memory space.
*/
nvm->flash_base_addr = 0;
nvm_size =
(((E1000_READ_REG(hw, E1000_STRAP) >> 1) & 0x1F) + 1)
* NVM_SIZE_MULTIPLIER;
nvm->flash_bank_size = nvm_size / 2;
/* Adjust to word count */
nvm->flash_bank_size /= sizeof(u16);
/* Set the base address for flash register access */
hw->flash_address = hw->hw_addr + E1000_FLASH_BASE_ADDR;
} else {
/* Can't read flash registers if register set isn't mapped. */
if (!hw->flash_address) {
DEBUGOUT("ERROR: Flash registers not mapped\n");
return -E1000_ERR_CONFIG;
}
gfpreg = E1000_READ_FLASH_REG(hw, ICH_FLASH_GFPREG);
/* sector_X_addr is a "sector"-aligned address (4096 bytes)
* Add 1 to sector_end_addr since this sector is included in
* the overall size.
*/
sector_base_addr = gfpreg & FLASH_GFPREG_BASE_MASK;
sector_end_addr = ((gfpreg >> 16) & FLASH_GFPREG_BASE_MASK) + 1;
/* flash_base_addr is byte-aligned */
nvm->flash_base_addr = sector_base_addr
<< FLASH_SECTOR_ADDR_SHIFT;
/* find total size of the NVM, then cut in half since the total
* size represents two separate NVM banks.
*/
nvm->flash_bank_size = ((sector_end_addr - sector_base_addr)
<< FLASH_SECTOR_ADDR_SHIFT);
nvm->flash_bank_size /= 2;
/* Adjust to word count */
nvm->flash_bank_size /= sizeof(u16);
}
nvm->word_size = E1000_SHADOW_RAM_WORDS;
/* Clear shadow ram */
for (i = 0; i < nvm->word_size; i++) {
dev_spec->shadow_ram[i].modified = FALSE;
dev_spec->shadow_ram[i].value = 0xFFFF;
}
/* Function Pointers */
nvm->ops.acquire = e1000_acquire_nvm_ich8lan;
nvm->ops.release = e1000_release_nvm_ich8lan;
if (hw->mac.type >= e1000_pch_spt) {
nvm->ops.read = e1000_read_nvm_spt;
nvm->ops.update = e1000_update_nvm_checksum_spt;
} else {
nvm->ops.read = e1000_read_nvm_ich8lan;
nvm->ops.update = e1000_update_nvm_checksum_ich8lan;
}
nvm->ops.valid_led_default = e1000_valid_led_default_ich8lan;
nvm->ops.validate = e1000_validate_nvm_checksum_ich8lan;
nvm->ops.write = e1000_write_nvm_ich8lan;
return E1000_SUCCESS;
}
/**
* e1000_init_mac_params_ich8lan - Initialize MAC function pointers
* @hw: pointer to the HW structure
*
* Initialize family-specific MAC parameters and function
* pointers.
**/
static s32 e1000_init_mac_params_ich8lan(struct e1000_hw *hw)
{
struct e1000_mac_info *mac = &hw->mac;
DEBUGFUNC("e1000_init_mac_params_ich8lan");
/* Set media type function pointer */
hw->phy.media_type = e1000_media_type_copper;
/* Set mta register count */
mac->mta_reg_count = 32;
/* Set rar entry count */
mac->rar_entry_count = E1000_ICH_RAR_ENTRIES;
if (mac->type == e1000_ich8lan)
mac->rar_entry_count--;
/* Set if part includes ASF firmware */
mac->asf_firmware_present = TRUE;
/* FWSM register */
mac->has_fwsm = TRUE;
/* ARC subsystem not supported */
mac->arc_subsystem_valid = FALSE;
/* Adaptive IFS supported */
mac->adaptive_ifs = TRUE;
/* Function pointers */
/* bus type/speed/width */
mac->ops.get_bus_info = e1000_get_bus_info_ich8lan;
/* function id */
mac->ops.set_lan_id = e1000_set_lan_id_single_port;
/* reset */
mac->ops.reset_hw = e1000_reset_hw_ich8lan;
/* hw initialization */
mac->ops.init_hw = e1000_init_hw_ich8lan;
/* link setup */
mac->ops.setup_link = e1000_setup_link_ich8lan;
/* physical interface setup */
mac->ops.setup_physical_interface = e1000_setup_copper_link_ich8lan;
/* check for link */
mac->ops.check_for_link = e1000_check_for_copper_link_ich8lan;
/* link info */
mac->ops.get_link_up_info = e1000_get_link_up_info_ich8lan;
/* multicast address update */
mac->ops.update_mc_addr_list = e1000_update_mc_addr_list_generic;
/* clear hardware counters */
mac->ops.clear_hw_cntrs = e1000_clear_hw_cntrs_ich8lan;
/* LED and other operations */
switch (mac->type) {
case e1000_ich8lan:
case e1000_ich9lan:
case e1000_ich10lan:
/* check management mode */
mac->ops.check_mng_mode = e1000_check_mng_mode_ich8lan;
/* ID LED init */
mac->ops.id_led_init = e1000_id_led_init_generic;
/* blink LED */
mac->ops.blink_led = e1000_blink_led_generic;
/* setup LED */
mac->ops.setup_led = e1000_setup_led_generic;
/* cleanup LED */
mac->ops.cleanup_led = e1000_cleanup_led_ich8lan;
/* turn on/off LED */
mac->ops.led_on = e1000_led_on_ich8lan;
mac->ops.led_off = e1000_led_off_ich8lan;
break;
case e1000_pch2lan:
mac->rar_entry_count = E1000_PCH2_RAR_ENTRIES;
mac->ops.rar_set = e1000_rar_set_pch2lan;
__FALLTHROUGH;
case e1000_pch_lpt:
case e1000_pch_spt:
case e1000_pch_cnp:
case e1000_pch_tgp:
/* multicast address update for pch2 */
mac->ops.update_mc_addr_list =
e1000_update_mc_addr_list_pch2lan;
__FALLTHROUGH;
case e1000_pchlan:
/* check management mode */
mac->ops.check_mng_mode = e1000_check_mng_mode_pchlan;
/* ID LED init */
mac->ops.id_led_init = e1000_id_led_init_pchlan;
/* setup LED */
mac->ops.setup_led = e1000_setup_led_pchlan;
/* cleanup LED */
mac->ops.cleanup_led = e1000_cleanup_led_pchlan;
/* turn on/off LED */
mac->ops.led_on = e1000_led_on_pchlan;
mac->ops.led_off = e1000_led_off_pchlan;
break;
default:
break;
}
if (mac->type >= e1000_pch_lpt) {
mac->rar_entry_count = E1000_PCH_LPT_RAR_ENTRIES;
mac->ops.rar_set = e1000_rar_set_pch_lpt;
mac->ops.setup_physical_interface = e1000_setup_copper_link_pch_lpt;
mac->ops.set_obff_timer = e1000_set_obff_timer_pch_lpt;
}
/* Enable PCS Lock-loss workaround for ICH8 */
if (mac->type == e1000_ich8lan)
e1000_set_kmrn_lock_loss_workaround_ich8lan(hw, TRUE);
return E1000_SUCCESS;
}
/**
* __e1000_access_emi_reg_locked - Read/write EMI register
* @hw: pointer to the HW structure
* @addr: EMI address to program
* @data: pointer to value to read/write from/to the EMI address
* @read: boolean flag to indicate read or write
*
* This helper function assumes the SW/FW/HW Semaphore is already acquired.
**/
static s32 __e1000_access_emi_reg_locked(struct e1000_hw *hw, u16 address,
u16 *data, bool read)
{
s32 ret_val;
DEBUGFUNC("__e1000_access_emi_reg_locked");
ret_val = hw->phy.ops.write_reg_locked(hw, I82579_EMI_ADDR, address);
if (ret_val)
return ret_val;
if (read)
ret_val = hw->phy.ops.read_reg_locked(hw, I82579_EMI_DATA,
data);
else
ret_val = hw->phy.ops.write_reg_locked(hw, I82579_EMI_DATA,
*data);
return ret_val;
}
/**
* e1000_read_emi_reg_locked - Read Extended Management Interface register
* @hw: pointer to the HW structure
* @addr: EMI address to program
* @data: value to be read from the EMI address
*
* Assumes the SW/FW/HW Semaphore is already acquired.
**/
s32 e1000_read_emi_reg_locked(struct e1000_hw *hw, u16 addr, u16 *data)
{
DEBUGFUNC("e1000_read_emi_reg_locked");
return __e1000_access_emi_reg_locked(hw, addr, data, TRUE);
}
/**
* e1000_write_emi_reg_locked - Write Extended Management Interface register
* @hw: pointer to the HW structure
* @addr: EMI address to program
* @data: value to be written to the EMI address
*
* Assumes the SW/FW/HW Semaphore is already acquired.
**/
s32 e1000_write_emi_reg_locked(struct e1000_hw *hw, u16 addr, u16 data)
{
DEBUGFUNC("e1000_read_emi_reg_locked");
return __e1000_access_emi_reg_locked(hw, addr, &data, FALSE);
}
/**
* e1000_set_eee_pchlan - Enable/disable EEE support
* @hw: pointer to the HW structure
*
* Enable/disable EEE based on setting in dev_spec structure, the duplex of
* the link and the EEE capabilities of the link partner. The LPI Control
* register bits will remain set only if/when link is up.
*
* EEE LPI must not be asserted earlier than one second after link is up.
* On 82579, EEE LPI should not be enabled until such time otherwise there
* can be link issues with some switches. Other devices can have EEE LPI
* enabled immediately upon link up since they have a timer in hardware which
* prevents LPI from being asserted too early.
**/
s32 e1000_set_eee_pchlan(struct e1000_hw *hw)
{
struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
s32 ret_val;
u16 lpa, pcs_status, adv, adv_addr, lpi_ctrl, data;
DEBUGFUNC("e1000_set_eee_pchlan");
switch (hw->phy.type) {
case e1000_phy_82579:
lpa = I82579_EEE_LP_ABILITY;
pcs_status = I82579_EEE_PCS_STATUS;
adv_addr = I82579_EEE_ADVERTISEMENT;
break;
case e1000_phy_i217:
lpa = I217_EEE_LP_ABILITY;
pcs_status = I217_EEE_PCS_STATUS;
adv_addr = I217_EEE_ADVERTISEMENT;
break;
default:
return E1000_SUCCESS;
}
ret_val = hw->phy.ops.acquire(hw);
if (ret_val)
return ret_val;
ret_val = hw->phy.ops.read_reg_locked(hw, I82579_LPI_CTRL, &lpi_ctrl);
if (ret_val)
goto release;
/* Clear bits that enable EEE in various speeds */
lpi_ctrl &= ~I82579_LPI_CTRL_ENABLE_MASK;
/* Enable EEE if not disabled by user */
if (!dev_spec->eee_disable) {
/* Save off link partner's EEE ability */
ret_val = e1000_read_emi_reg_locked(hw, lpa,
&dev_spec->eee_lp_ability);
if (ret_val)
goto release;
/* Read EEE advertisement */
ret_val = e1000_read_emi_reg_locked(hw, adv_addr, &adv);
if (ret_val)
goto release;
/* Enable EEE only for speeds in which the link partner is
* EEE capable and for which we advertise EEE.
*/
if (adv & dev_spec->eee_lp_ability & I82579_EEE_1000_SUPPORTED)
lpi_ctrl |= I82579_LPI_CTRL_1000_ENABLE;
if (adv & dev_spec->eee_lp_ability & I82579_EEE_100_SUPPORTED) {
hw->phy.ops.read_reg_locked(hw, PHY_LP_ABILITY, &data);
if (data & NWAY_LPAR_100TX_FD_CAPS)
lpi_ctrl |= I82579_LPI_CTRL_100_ENABLE;
else
/* EEE is not supported in 100Half, so ignore
* partner's EEE in 100 ability if full-duplex
* is not advertised.
*/
dev_spec->eee_lp_ability &=
~I82579_EEE_100_SUPPORTED;
}
}
if (hw->phy.type == e1000_phy_82579) {
ret_val = e1000_read_emi_reg_locked(hw, I82579_LPI_PLL_SHUT,
&data);
if (ret_val)
goto release;
data &= ~I82579_LPI_100_PLL_SHUT;
ret_val = e1000_write_emi_reg_locked(hw, I82579_LPI_PLL_SHUT,
data);
}
/* R/Clr IEEE MMD 3.1 bits 11:10 - Tx/Rx LPI Received */
ret_val = e1000_read_emi_reg_locked(hw, pcs_status, &data);
if (ret_val)
goto release;
ret_val = hw->phy.ops.write_reg_locked(hw, I82579_LPI_CTRL, lpi_ctrl);
release:
hw->phy.ops.release(hw);
return ret_val;
}
/**
* e1000_k1_workaround_lpt_lp - K1 workaround on Lynxpoint-LP
* @hw: pointer to the HW structure
* @link: link up bool flag
*
* When K1 is enabled for 1Gbps, the MAC can miss 2 DMA completion indications
* preventing further DMA write requests. Workaround the issue by disabling
* the de-assertion of the clock request when in 1Gpbs mode.
* Also, set appropriate Tx re-transmission timeouts for 10 and 100Half link
* speeds in order to avoid Tx hangs.
**/
static s32 e1000_k1_workaround_lpt_lp(struct e1000_hw *hw, bool link)
{
u32 fextnvm6 = E1000_READ_REG(hw, E1000_FEXTNVM6);
u32 status = E1000_READ_REG(hw, E1000_STATUS);
s32 ret_val = E1000_SUCCESS;
u16 reg;
if (link && (status & E1000_STATUS_SPEED_1000)) {
ret_val = hw->phy.ops.acquire(hw);
if (ret_val)
return ret_val;
ret_val =
e1000_read_kmrn_reg_locked(hw, E1000_KMRNCTRLSTA_K1_CONFIG,
&reg);
if (ret_val)
goto release;
ret_val =
e1000_write_kmrn_reg_locked(hw,
E1000_KMRNCTRLSTA_K1_CONFIG,
reg &
~E1000_KMRNCTRLSTA_K1_ENABLE);
if (ret_val)
goto release;
usec_delay(10);
E1000_WRITE_REG(hw, E1000_FEXTNVM6,
fextnvm6 | E1000_FEXTNVM6_REQ_PLL_CLK);
ret_val =
e1000_write_kmrn_reg_locked(hw,
E1000_KMRNCTRLSTA_K1_CONFIG,
reg);
release:
hw->phy.ops.release(hw);
} else {
/* clear FEXTNVM6 bit 8 on link down or 10/100 */
fextnvm6 &= ~E1000_FEXTNVM6_REQ_PLL_CLK;
if ((hw->phy.revision > 5) || !link ||
((status & E1000_STATUS_SPEED_100) &&
(status & E1000_STATUS_FD)))
goto update_fextnvm6;
ret_val = hw->phy.ops.read_reg(hw, I217_INBAND_CTRL, &reg);
if (ret_val)
return ret_val;
/* Clear link status transmit timeout */
reg &= ~I217_INBAND_CTRL_LINK_STAT_TX_TIMEOUT_MASK;
if (status & E1000_STATUS_SPEED_100) {
/* Set inband Tx timeout to 5x10us for 100Half */
reg |= 5 << I217_INBAND_CTRL_LINK_STAT_TX_TIMEOUT_SHIFT;
/* Do not extend the K1 entry latency for 100Half */
fextnvm6 &= ~E1000_FEXTNVM6_ENABLE_K1_ENTRY_CONDITION;
} else {
/* Set inband Tx timeout to 50x10us for 10Full/Half */
reg |= 50 <<
I217_INBAND_CTRL_LINK_STAT_TX_TIMEOUT_SHIFT;
/* Extend the K1 entry latency for 10 Mbps */
fextnvm6 |= E1000_FEXTNVM6_ENABLE_K1_ENTRY_CONDITION;
}
ret_val = hw->phy.ops.write_reg(hw, I217_INBAND_CTRL, reg);
if (ret_val)
return ret_val;
update_fextnvm6:
E1000_WRITE_REG(hw, E1000_FEXTNVM6, fextnvm6);
}
return ret_val;
}
static u64 e1000_ltr2ns(u16 ltr)
{
u32 value, scale;
/* Determine the latency in nsec based on the LTR value & scale */
value = ltr & E1000_LTRV_VALUE_MASK;
scale = (ltr & E1000_LTRV_SCALE_MASK) >> E1000_LTRV_SCALE_SHIFT;
return value * (1 << (scale * E1000_LTRV_SCALE_FACTOR));
}
/**
* e1000_platform_pm_pch_lpt - Set platform power management values
* @hw: pointer to the HW structure
* @link: bool indicating link status
*
* Set the Latency Tolerance Reporting (LTR) values for the "PCIe-like"
* GbE MAC in the Lynx Point PCH based on Rx buffer size and link speed
* when link is up (which must not exceed the maximum latency supported
* by the platform), otherwise specify there is no LTR requirement.
* Unlike TRUE-PCIe devices which set the LTR maximum snoop/no-snoop
* latencies in the LTR Extended Capability Structure in the PCIe Extended
* Capability register set, on this device LTR is set by writing the
* equivalent snoop/no-snoop latencies in the LTRV register in the MAC and
* set the SEND bit to send an Intel On-chip System Fabric sideband (IOSF-SB)
* message to the PMC.
*
* Use the LTR value to calculate the Optimized Buffer Flush/Fill (OBFF)
* high-water mark.
**/
static s32 e1000_platform_pm_pch_lpt(struct e1000_hw *hw, bool link)
{
u32 reg = link << (E1000_LTRV_REQ_SHIFT + E1000_LTRV_NOSNOOP_SHIFT) |
link << E1000_LTRV_REQ_SHIFT | E1000_LTRV_SEND;
u16 lat_enc = 0; /* latency encoded */
s32 obff_hwm = 0;
DEBUGFUNC("e1000_platform_pm_pch_lpt");
if (link) {
u16 speed, duplex, scale = 0;
u16 max_snoop, max_nosnoop;
u16 max_ltr_enc; /* max LTR latency encoded */
s64 lat_ns;
s64 value;
u32 rxa;
if (!hw->mac.max_frame_size) {
DEBUGOUT("max_frame_size not set.\n");
return -E1000_ERR_CONFIG;
}
hw->mac.ops.get_link_up_info(hw, &speed, &duplex);
if (!speed) {
DEBUGOUT("Speed not set.\n");
return -E1000_ERR_CONFIG;
}
/* Rx Packet Buffer Allocation size (KB) */
rxa = E1000_READ_REG(hw, E1000_PBA) & E1000_PBA_RXA_MASK;
/* Determine the maximum latency tolerated by the device.
*
* Per the PCIe spec, the tolerated latencies are encoded as
* a 3-bit encoded scale (only 0-5 are valid) multiplied by
* a 10-bit value (0-1023) to provide a range from 1 ns to
* 2^25*(2^10-1) ns. The scale is encoded as 0=2^0ns,
* 1=2^5ns, 2=2^10ns,...5=2^25ns.
*/
lat_ns = ((s64)rxa * 1024 -
(2 * (s64)hw->mac.max_frame_size)) * 8 * 1000;
if (lat_ns < 0)
lat_ns = 0;
else
lat_ns /= speed;
value = lat_ns;
while (value > E1000_LTRV_VALUE_MASK) {
scale++;
value = E1000_DIVIDE_ROUND_UP(value, (1 << 5));
}
if (scale > E1000_LTRV_SCALE_MAX) {
DEBUGOUT1("Invalid LTR latency scale %d\n", scale);
return -E1000_ERR_CONFIG;
}
lat_enc = (u16)((scale << E1000_LTRV_SCALE_SHIFT) | value);
/* Determine the maximum latency tolerated by the platform */
e1000_read_pci_cfg(hw, E1000_PCI_LTR_CAP_LPT, &max_snoop);
e1000_read_pci_cfg(hw, E1000_PCI_LTR_CAP_LPT + 2, &max_nosnoop);
max_ltr_enc = E1000_MAX(max_snoop, max_nosnoop);
if (lat_enc > max_ltr_enc) {
lat_enc = max_ltr_enc;
lat_ns = e1000_ltr2ns(max_ltr_enc);
}
if (lat_ns) {
lat_ns *= speed * 1000;
lat_ns /= 8;
lat_ns /= 1000000000;
obff_hwm = (s32)(rxa - lat_ns);
}
if ((obff_hwm < 0) || (obff_hwm > E1000_SVT_OFF_HWM_MASK)) {
DEBUGOUT1("Invalid high water mark %d\n", obff_hwm);
return -E1000_ERR_CONFIG;
}
}
/* Set Snoop and No-Snoop latencies the same */
reg |= lat_enc | (lat_enc << E1000_LTRV_NOSNOOP_SHIFT);
E1000_WRITE_REG(hw, E1000_LTRV, reg);
/* Set OBFF high water mark */
reg = E1000_READ_REG(hw, E1000_SVT) & ~E1000_SVT_OFF_HWM_MASK;
reg |= obff_hwm;
E1000_WRITE_REG(hw, E1000_SVT, reg);
/* Enable OBFF */
reg = E1000_READ_REG(hw, E1000_SVCR);
reg |= E1000_SVCR_OFF_EN;
/* Always unblock interrupts to the CPU even when the system is
* in OBFF mode. This ensures that small round-robin traffic
* (like ping) does not get dropped or experience long latency.
*/
reg |= E1000_SVCR_OFF_MASKINT;
E1000_WRITE_REG(hw, E1000_SVCR, reg);
return E1000_SUCCESS;
}
/**
* e1000_set_obff_timer_pch_lpt - Update Optimized Buffer Flush/Fill timer
* @hw: pointer to the HW structure
* @itr: interrupt throttling rate
*
* Configure OBFF with the updated interrupt rate.
**/
static s32 e1000_set_obff_timer_pch_lpt(struct e1000_hw *hw, u32 itr)
{
u32 svcr;
s32 timer;
DEBUGFUNC("e1000_set_obff_timer_pch_lpt");
/* Convert ITR value into microseconds for OBFF timer */
timer = itr & E1000_ITR_MASK;
timer = (timer * E1000_ITR_MULT) / 1000;
if ((timer < 0) || (timer > E1000_ITR_MASK)) {
DEBUGOUT1("Invalid OBFF timer %d\n", timer);
return -E1000_ERR_CONFIG;
}
svcr = E1000_READ_REG(hw, E1000_SVCR);
svcr &= ~E1000_SVCR_OFF_TIMER_MASK;
svcr |= timer << E1000_SVCR_OFF_TIMER_SHIFT;
E1000_WRITE_REG(hw, E1000_SVCR, svcr);
return E1000_SUCCESS;
}
/**
* e1000_enable_ulp_lpt_lp - configure Ultra Low Power mode for LynxPoint-LP
* @hw: pointer to the HW structure
* @to_sx: boolean indicating a system power state transition to Sx
*
* When link is down, configure ULP mode to significantly reduce the power
* to the PHY. If on a Manageability Engine (ME) enabled system, tell the
* ME firmware to start the ULP configuration. If not on an ME enabled
* system, configure the ULP mode by software.
*/
s32 e1000_enable_ulp_lpt_lp(struct e1000_hw *hw, bool to_sx)
{
u32 mac_reg;
s32 ret_val = E1000_SUCCESS;
u16 phy_reg;
u16 oem_reg = 0;
if ((hw->mac.type < e1000_pch_lpt) ||
(hw->device_id == E1000_DEV_ID_PCH_LPT_I217_LM) ||
(hw->device_id == E1000_DEV_ID_PCH_LPT_I217_V) ||
(hw->device_id == E1000_DEV_ID_PCH_I218_LM2) ||
(hw->device_id == E1000_DEV_ID_PCH_I218_V2) ||
(hw->dev_spec.ich8lan.ulp_state == e1000_ulp_state_on))
return 0;
if (E1000_READ_REG(hw, E1000_FWSM) & E1000_ICH_FWSM_FW_VALID) {
/* Request ME configure ULP mode in the PHY */
mac_reg = E1000_READ_REG(hw, E1000_H2ME);
mac_reg |= E1000_H2ME_ULP | E1000_H2ME_ENFORCE_SETTINGS;
E1000_WRITE_REG(hw, E1000_H2ME, mac_reg);
goto out;
}
if (!to_sx) {
int i = 0;
/* Poll up to 5 seconds for Cable Disconnected indication */
while (!(E1000_READ_REG(hw, E1000_FEXT) &
E1000_FEXT_PHY_CABLE_DISCONNECTED)) {
/* Bail if link is re-acquired */
if (E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU)
return -E1000_ERR_PHY;
if (i++ == 100)
break;
msec_delay(50);
}
DEBUGOUT2("CABLE_DISCONNECTED %s set after %dmsec\n",
(E1000_READ_REG(hw, E1000_FEXT) &
E1000_FEXT_PHY_CABLE_DISCONNECTED) ? "" : "not",
i * 50);
}
ret_val = hw->phy.ops.acquire(hw);
if (ret_val)
goto out;
/* Force SMBus mode in PHY */
ret_val = e1000_read_phy_reg_hv_locked(hw, CV_SMB_CTRL, &phy_reg);
if (ret_val)
goto release;
phy_reg |= CV_SMB_CTRL_FORCE_SMBUS;
e1000_write_phy_reg_hv_locked(hw, CV_SMB_CTRL, phy_reg);
/* Force SMBus mode in MAC */
mac_reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
mac_reg |= E1000_CTRL_EXT_FORCE_SMBUS;
E1000_WRITE_REG(hw, E1000_CTRL_EXT, mac_reg);
/* Si workaround for ULP entry flow on i127/rev6 h/w. Enable
* LPLU and disable Gig speed when entering ULP
*/
if ((hw->phy.type == e1000_phy_i217) && (hw->phy.revision == 6)) {
ret_val = e1000_read_phy_reg_hv_locked(hw, HV_OEM_BITS,
&oem_reg);
if (ret_val)
goto release;
phy_reg = oem_reg;
phy_reg |= HV_OEM_BITS_LPLU | HV_OEM_BITS_GBE_DIS;
ret_val = e1000_write_phy_reg_hv_locked(hw, HV_OEM_BITS,
phy_reg);
if (ret_val)
goto release;
}
/* Set Inband ULP Exit, Reset to SMBus mode and
* Disable SMBus Release on PERST# in PHY
*/
ret_val = e1000_read_phy_reg_hv_locked(hw, I218_ULP_CONFIG1, &phy_reg);
if (ret_val)
goto release;
phy_reg |= (I218_ULP_CONFIG1_RESET_TO_SMBUS |
I218_ULP_CONFIG1_DISABLE_SMB_PERST);
if (to_sx) {
if (E1000_READ_REG(hw, E1000_WUFC) & E1000_WUFC_LNKC)
phy_reg |= I218_ULP_CONFIG1_WOL_HOST;
else
phy_reg &= ~I218_ULP_CONFIG1_WOL_HOST;
phy_reg |= I218_ULP_CONFIG1_STICKY_ULP;
phy_reg &= ~I218_ULP_CONFIG1_INBAND_EXIT;
} else {
phy_reg |= I218_ULP_CONFIG1_INBAND_EXIT;
phy_reg &= ~I218_ULP_CONFIG1_STICKY_ULP;
phy_reg &= ~I218_ULP_CONFIG1_WOL_HOST;
}
e1000_write_phy_reg_hv_locked(hw, I218_ULP_CONFIG1, phy_reg);
/* Set Disable SMBus Release on PERST# in MAC */
mac_reg = E1000_READ_REG(hw, E1000_FEXTNVM7);
mac_reg |= E1000_FEXTNVM7_DISABLE_SMB_PERST;
E1000_WRITE_REG(hw, E1000_FEXTNVM7, mac_reg);
/* Commit ULP changes in PHY by starting auto ULP configuration */
phy_reg |= I218_ULP_CONFIG1_START;
e1000_write_phy_reg_hv_locked(hw, I218_ULP_CONFIG1, phy_reg);
if ((hw->phy.type == e1000_phy_i217) && (hw->phy.revision == 6) &&
to_sx && (E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU)) {
ret_val = e1000_write_phy_reg_hv_locked(hw, HV_OEM_BITS,
oem_reg);
if (ret_val)
goto release;
}
release:
hw->phy.ops.release(hw);
out:
if (ret_val)
DEBUGOUT1("Error in ULP enable flow: %d\n", ret_val);
else
hw->dev_spec.ich8lan.ulp_state = e1000_ulp_state_on;
return ret_val;
}
/**
* e1000_disable_ulp_lpt_lp - unconfigure Ultra Low Power mode for LynxPoint-LP
* @hw: pointer to the HW structure
* @force: boolean indicating whether or not to force disabling ULP
*
* Un-configure ULP mode when link is up, the system is transitioned from
* Sx or the driver is unloaded. If on a Manageability Engine (ME) enabled
* system, poll for an indication from ME that ULP has been un-configured.
* If not on an ME enabled system, un-configure the ULP mode by software.
*
* During nominal operation, this function is called when link is acquired
* to disable ULP mode (force=FALSE); otherwise, for example when unloading
* the driver or during Sx->S0 transitions, this is called with force=TRUE
* to forcibly disable ULP.
*/
s32 e1000_disable_ulp_lpt_lp(struct e1000_hw *hw, bool force)
{
s32 ret_val = E1000_SUCCESS;
u32 mac_reg;
u16 phy_reg;
int i = 0;
if ((hw->mac.type < e1000_pch_lpt) ||
(hw->device_id == E1000_DEV_ID_PCH_LPT_I217_LM) ||
(hw->device_id == E1000_DEV_ID_PCH_LPT_I217_V) ||
(hw->device_id == E1000_DEV_ID_PCH_I218_LM2) ||
(hw->device_id == E1000_DEV_ID_PCH_I218_V2) ||
(hw->dev_spec.ich8lan.ulp_state == e1000_ulp_state_off))
return 0;
if (E1000_READ_REG(hw, E1000_FWSM) & E1000_ICH_FWSM_FW_VALID) {
if (force) {
/* Request ME un-configure ULP mode in the PHY */
mac_reg = E1000_READ_REG(hw, E1000_H2ME);
mac_reg &= ~E1000_H2ME_ULP;
mac_reg |= E1000_H2ME_ENFORCE_SETTINGS;
E1000_WRITE_REG(hw, E1000_H2ME, mac_reg);
}
/* Poll up to 300msec for ME to clear ULP_CFG_DONE. */
while (E1000_READ_REG(hw, E1000_FWSM) &
E1000_FWSM_ULP_CFG_DONE) {
if (i++ == 30) {
ret_val = -E1000_ERR_PHY;
goto out;
}
msec_delay(10);
}
DEBUGOUT1("ULP_CONFIG_DONE cleared after %dmsec\n", i * 10);
if (force) {
mac_reg = E1000_READ_REG(hw, E1000_H2ME);
mac_reg &= ~E1000_H2ME_ENFORCE_SETTINGS;
E1000_WRITE_REG(hw, E1000_H2ME, mac_reg);
} else {
/* Clear H2ME.ULP after ME ULP configuration */
mac_reg = E1000_READ_REG(hw, E1000_H2ME);
mac_reg &= ~E1000_H2ME_ULP;
E1000_WRITE_REG(hw, E1000_H2ME, mac_reg);
}
goto out;
}
ret_val = hw->phy.ops.acquire(hw);
if (ret_val)
goto out;
if (force)
/* Toggle LANPHYPC Value bit */
e1000_toggle_lanphypc_pch_lpt(hw);
/* Unforce SMBus mode in PHY */
ret_val = e1000_read_phy_reg_hv_locked(hw, CV_SMB_CTRL, &phy_reg);
if (ret_val) {
/* The MAC might be in PCIe mode, so temporarily force to
* SMBus mode in order to access the PHY.
*/
mac_reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
mac_reg |= E1000_CTRL_EXT_FORCE_SMBUS;
E1000_WRITE_REG(hw, E1000_CTRL_EXT, mac_reg);
msec_delay(50);
ret_val = e1000_read_phy_reg_hv_locked(hw, CV_SMB_CTRL,
&phy_reg);
if (ret_val)
goto release;
}
phy_reg &= ~CV_SMB_CTRL_FORCE_SMBUS;
e1000_write_phy_reg_hv_locked(hw, CV_SMB_CTRL, phy_reg);
/* Unforce SMBus mode in MAC */
mac_reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
mac_reg &= ~E1000_CTRL_EXT_FORCE_SMBUS;
E1000_WRITE_REG(hw, E1000_CTRL_EXT, mac_reg);
/* When ULP mode was previously entered, K1 was disabled by the
* hardware. Re-Enable K1 in the PHY when exiting ULP.
*/
ret_val = e1000_read_phy_reg_hv_locked(hw, HV_PM_CTRL, &phy_reg);
if (ret_val)
goto release;
phy_reg |= HV_PM_CTRL_K1_ENABLE;
e1000_write_phy_reg_hv_locked(hw, HV_PM_CTRL, phy_reg);
/* Clear ULP enabled configuration */
ret_val = e1000_read_phy_reg_hv_locked(hw, I218_ULP_CONFIG1, &phy_reg);
if (ret_val)
goto release;
phy_reg &= ~(I218_ULP_CONFIG1_IND |
I218_ULP_CONFIG1_STICKY_ULP |
I218_ULP_CONFIG1_RESET_TO_SMBUS |
I218_ULP_CONFIG1_WOL_HOST |
I218_ULP_CONFIG1_INBAND_EXIT |
I218_ULP_CONFIG1_EN_ULP_LANPHYPC |
I218_ULP_CONFIG1_DIS_CLR_STICKY_ON_PERST |
I218_ULP_CONFIG1_DISABLE_SMB_PERST);
e1000_write_phy_reg_hv_locked(hw, I218_ULP_CONFIG1, phy_reg);
/* Commit ULP changes by starting auto ULP configuration */
phy_reg |= I218_ULP_CONFIG1_START;
e1000_write_phy_reg_hv_locked(hw, I218_ULP_CONFIG1, phy_reg);
/* Clear Disable SMBus Release on PERST# in MAC */
mac_reg = E1000_READ_REG(hw, E1000_FEXTNVM7);
mac_reg &= ~E1000_FEXTNVM7_DISABLE_SMB_PERST;
E1000_WRITE_REG(hw, E1000_FEXTNVM7, mac_reg);
release:
hw->phy.ops.release(hw);
if (force) {
hw->phy.ops.reset(hw);
msec_delay(50);
}
out:
if (ret_val)
DEBUGOUT1("Error in ULP disable flow: %d\n", ret_val);
else
hw->dev_spec.ich8lan.ulp_state = e1000_ulp_state_off;
return ret_val;
}
/**
* e1000_check_for_copper_link_ich8lan - Check for link (Copper)
* @hw: pointer to the HW structure
*
* Checks to see of the link status of the hardware has changed. If a
* change in link status has been detected, then we read the PHY registers
* to get the current speed/duplex if link exists.
**/
static s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw)
{
struct e1000_mac_info *mac = &hw->mac;
s32 ret_val, tipg_reg = 0;
u16 emi_addr, emi_val = 0;
bool link;
u16 phy_reg;
DEBUGFUNC("e1000_check_for_copper_link_ich8lan");
/* We only want to go out to the PHY registers to see if Auto-Neg
* has completed and/or if our link status has changed. The
* get_link_status flag is set upon receiving a Link Status
* Change or Rx Sequence Error interrupt.
*/
if (!mac->get_link_status)
return E1000_SUCCESS;
/* First we want to see if the MII Status Register reports
* link. If so, then we want to get the current speed/duplex
* of the PHY.
*/
ret_val = e1000_phy_has_link_generic(hw, 1, 0, &link);
if (ret_val)
return ret_val;
if (hw->mac.type == e1000_pchlan) {
ret_val = e1000_k1_gig_workaround_hv(hw, link);
if (ret_val)
return ret_val;
}
/* When connected at 10Mbps half-duplex, some parts are excessively
* aggressive resulting in many collisions. To avoid this, increase
* the IPG and reduce Rx latency in the PHY.
*/
if ((hw->mac.type >= e1000_pch2lan) && link) {
u16 speed, duplex;
e1000_get_speed_and_duplex_copper_generic(hw, &speed, &duplex);
tipg_reg = E1000_READ_REG(hw, E1000_TIPG);
tipg_reg &= ~E1000_TIPG_IPGT_MASK;
if (duplex == HALF_DUPLEX && speed == SPEED_10) {
tipg_reg |= 0xFF;
/* Reduce Rx latency in analog PHY */
emi_val = 0;
} else if (hw->mac.type >= e1000_pch_spt &&
duplex == FULL_DUPLEX && speed != SPEED_1000) {
tipg_reg |= 0xC;
emi_val = 1;
} else {
/* Roll back the default values */
tipg_reg |= 0x08;
emi_val = 1;
}
E1000_WRITE_REG(hw, E1000_TIPG, tipg_reg);
ret_val = hw->phy.ops.acquire(hw);
if (ret_val)
return ret_val;
if (hw->mac.type == e1000_pch2lan)
emi_addr = I82579_RX_CONFIG;
else
emi_addr = I217_RX_CONFIG;
ret_val = e1000_write_emi_reg_locked(hw, emi_addr, emi_val);
if (hw->mac.type >= e1000_pch_lpt) {
u16 phy_reg;
hw->phy.ops.read_reg_locked(hw, I217_PLL_CLOCK_GATE_REG,
&phy_reg);
phy_reg &= ~I217_PLL_CLOCK_GATE_MASK;
if (speed == SPEED_100 || speed == SPEED_10)
phy_reg |= 0x3E8;
else
phy_reg |= 0xFA;
hw->phy.ops.write_reg_locked(hw,
I217_PLL_CLOCK_GATE_REG,
phy_reg);
if (speed == SPEED_1000) {
hw->phy.ops.read_reg_locked(hw, HV_PM_CTRL,
&phy_reg);
phy_reg |= HV_PM_CTRL_K1_CLK_REQ;
hw->phy.ops.write_reg_locked(hw, HV_PM_CTRL,
phy_reg);
}
}
hw->phy.ops.release(hw);
if (ret_val)
return ret_val;
if (hw->mac.type >= e1000_pch_spt) {
u16 data;
u16 ptr_gap;
if (speed == SPEED_1000) {
ret_val = hw->phy.ops.acquire(hw);
if (ret_val)
return ret_val;
ret_val = hw->phy.ops.read_reg_locked(hw,
PHY_REG(776, 20),
&data);
if (ret_val) {
hw->phy.ops.release(hw);
return ret_val;
}
ptr_gap = (data & (0x3FF << 2)) >> 2;
if (ptr_gap < 0x18) {
data &= ~(0x3FF << 2);
data |= (0x18 << 2);
ret_val =
hw->phy.ops.write_reg_locked(hw,
PHY_REG(776, 20), data);
}
hw->phy.ops.release(hw);
if (ret_val)
return ret_val;
} else {
ret_val = hw->phy.ops.acquire(hw);
if (ret_val)
return ret_val;
ret_val = hw->phy.ops.write_reg_locked(hw,
PHY_REG(776, 20),
0xC023);
hw->phy.ops.release(hw);
if (ret_val)
return ret_val;
}
}
}
/* I217 Packet Loss issue:
* ensure that FEXTNVM4 Beacon Duration is set correctly
* on power up.
* Set the Beacon Duration for I217 to 8 usec
*/
if (hw->mac.type >= e1000_pch_lpt) {
u32 mac_reg;
mac_reg = E1000_READ_REG(hw, E1000_FEXTNVM4);
mac_reg &= ~E1000_FEXTNVM4_BEACON_DURATION_MASK;
mac_reg |= E1000_FEXTNVM4_BEACON_DURATION_8USEC;
E1000_WRITE_REG(hw, E1000_FEXTNVM4, mac_reg);
}
/* Work-around I218 hang issue */
if ((hw->device_id == E1000_DEV_ID_PCH_LPTLP_I218_LM) ||
(hw->device_id == E1000_DEV_ID_PCH_LPTLP_I218_V) ||
(hw->device_id == E1000_DEV_ID_PCH_I218_LM3) ||
(hw->device_id == E1000_DEV_ID_PCH_I218_V3)) {
ret_val = e1000_k1_workaround_lpt_lp(hw, link);
if (ret_val)
return ret_val;
}
if (hw->mac.type >= e1000_pch_lpt) {
/* Set platform power management values for
* Latency Tolerance Reporting (LTR)
* Optimized Buffer Flush/Fill (OBFF)
*/
ret_val = e1000_platform_pm_pch_lpt(hw, link);
if (ret_val)
return ret_val;
}
/* Clear link partner's EEE ability */
hw->dev_spec.ich8lan.eee_lp_ability = 0;
if (hw->mac.type >= e1000_pch_lpt) {
u32 fextnvm6 = E1000_READ_REG(hw, E1000_FEXTNVM6);
if (hw->mac.type == e1000_pch_spt) {
/* FEXTNVM6 K1-off workaround - for SPT only */
u32 pcieanacfg = E1000_READ_REG(hw, E1000_PCIEANACFG);
if (pcieanacfg & E1000_FEXTNVM6_K1_OFF_ENABLE)
fextnvm6 |= E1000_FEXTNVM6_K1_OFF_ENABLE;
else
fextnvm6 &= ~E1000_FEXTNVM6_K1_OFF_ENABLE;
}
if (hw->dev_spec.ich8lan.disable_k1_off == TRUE)
fextnvm6 &= ~E1000_FEXTNVM6_K1_OFF_ENABLE;
E1000_WRITE_REG(hw, E1000_FEXTNVM6, fextnvm6);
}
if (!link)
return E1000_SUCCESS; /* No link detected */
mac->get_link_status = FALSE;
switch (hw->mac.type) {
case e1000_pch2lan:
ret_val = e1000_k1_workaround_lv(hw);
if (ret_val)
return ret_val;
__FALLTHROUGH;
case e1000_pchlan:
if (hw->phy.type == e1000_phy_82578) {
ret_val = e1000_link_stall_workaround_hv(hw);
if (ret_val)
return ret_val;
}
/* Workaround for PCHx parts in half-duplex:
* Set the number of preambles removed from the packet
* when it is passed from the PHY to the MAC to prevent
* the MAC from misinterpreting the packet type.
*/
hw->phy.ops.read_reg(hw, HV_KMRN_FIFO_CTRLSTA, &phy_reg);
phy_reg &= ~HV_KMRN_FIFO_CTRLSTA_PREAMBLE_MASK;
if ((E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_FD) !=
E1000_STATUS_FD)
phy_reg |= (1 << HV_KMRN_FIFO_CTRLSTA_PREAMBLE_SHIFT);
hw->phy.ops.write_reg(hw, HV_KMRN_FIFO_CTRLSTA, phy_reg);
break;
default:
break;
}
/* Check if there was DownShift, must be checked
* immediately after link-up
*/
e1000_check_downshift_generic(hw);
/* Enable/Disable EEE after link up */
if (hw->phy.type > e1000_phy_82579) {
ret_val = e1000_set_eee_pchlan(hw);
if (ret_val)
return ret_val;
}
/* If we are forcing speed/duplex, then we simply return since
* we have already determined whether we have link or not.
*/
if (!mac->autoneg)
return -E1000_ERR_CONFIG;
/* Auto-Neg is enabled. Auto Speed Detection takes care
* of MAC speed/duplex configuration. So we only need to
* configure Collision Distance in the MAC.
*/
mac->ops.config_collision_dist(hw);
/* Configure Flow Control now that Auto-Neg has completed.
* First, we need to restore the desired flow control
* settings because we may have had to re-autoneg with a
* different link partner.
*/
ret_val = e1000_config_fc_after_link_up_generic(hw);
if (ret_val)
DEBUGOUT("Error configuring flow control\n");
return ret_val;
}
/**
* e1000_init_function_pointers_ich8lan - Initialize ICH8 function pointers
* @hw: pointer to the HW structure
*
* Initialize family-specific function pointers for PHY, MAC, and NVM.
**/
void e1000_init_function_pointers_ich8lan(struct e1000_hw *hw)
{
DEBUGFUNC("e1000_init_function_pointers_ich8lan");
hw->mac.ops.init_params = e1000_init_mac_params_ich8lan;
hw->nvm.ops.init_params = e1000_init_nvm_params_ich8lan;
switch (hw->mac.type) {
case e1000_ich8lan:
case e1000_ich9lan:
case e1000_ich10lan:
hw->phy.ops.init_params = e1000_init_phy_params_ich8lan;
break;
case e1000_pchlan:
case e1000_pch2lan:
case e1000_pch_lpt:
case e1000_pch_spt:
case e1000_pch_cnp:
case e1000_pch_tgp:
hw->phy.ops.init_params = e1000_init_phy_params_pchlan;
break;
default:
break;
}
}
/**
* e1000_acquire_nvm_ich8lan - Acquire NVM mutex
* @hw: pointer to the HW structure
*
* Acquires the mutex for performing NVM operations.
**/
static s32 e1000_acquire_nvm_ich8lan(struct e1000_hw *hw)
{
DEBUGFUNC("e1000_acquire_nvm_ich8lan");
ASSERT_CTX_LOCK_HELD(hw);
return E1000_SUCCESS;
}
/**
* e1000_release_nvm_ich8lan - Release NVM mutex
* @hw: pointer to the HW structure
*
* Releases the mutex used while performing NVM operations.
**/
static void e1000_release_nvm_ich8lan(struct e1000_hw *hw)
{
DEBUGFUNC("e1000_release_nvm_ich8lan");
ASSERT_CTX_LOCK_HELD(hw);
}
/**
* e1000_acquire_swflag_ich8lan - Acquire software control flag
* @hw: pointer to the HW structure
*
* Acquires the software control flag for performing PHY and select
* MAC CSR accesses.
**/
static s32 e1000_acquire_swflag_ich8lan(struct e1000_hw *hw)
{
u32 extcnf_ctrl, timeout = PHY_CFG_TIMEOUT;
s32 ret_val = E1000_SUCCESS;
DEBUGFUNC("e1000_acquire_swflag_ich8lan");
ASSERT_CTX_LOCK_HELD(hw);
while (timeout) {
extcnf_ctrl = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
if (!(extcnf_ctrl & E1000_EXTCNF_CTRL_SWFLAG))
break;
msec_delay_irq(1);
timeout--;
}
if (!timeout) {
DEBUGOUT("SW has already locked the resource.\n");
ret_val = -E1000_ERR_CONFIG;
goto out;
}
timeout = SW_FLAG_TIMEOUT;
extcnf_ctrl |= E1000_EXTCNF_CTRL_SWFLAG;
E1000_WRITE_REG(hw, E1000_EXTCNF_CTRL, extcnf_ctrl);
while (timeout) {
extcnf_ctrl = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
if (extcnf_ctrl & E1000_EXTCNF_CTRL_SWFLAG)
break;
msec_delay_irq(1);
timeout--;
}
if (!timeout) {
DEBUGOUT2("Failed to acquire the semaphore, FW or HW has it: FWSM=0x%8.8x EXTCNF_CTRL=0x%8.8x)\n",
E1000_READ_REG(hw, E1000_FWSM), extcnf_ctrl);
extcnf_ctrl &= ~E1000_EXTCNF_CTRL_SWFLAG;
E1000_WRITE_REG(hw, E1000_EXTCNF_CTRL, extcnf_ctrl);
ret_val = -E1000_ERR_CONFIG;
goto out;
}
out:
return ret_val;
}
/**
* e1000_release_swflag_ich8lan - Release software control flag
* @hw: pointer to the HW structure
*
* Releases the software control flag for performing PHY and select
* MAC CSR accesses.
**/
static void e1000_release_swflag_ich8lan(struct e1000_hw *hw)
{
u32 extcnf_ctrl;
DEBUGFUNC("e1000_release_swflag_ich8lan");
extcnf_ctrl = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
if (extcnf_ctrl & E1000_EXTCNF_CTRL_SWFLAG) {
extcnf_ctrl &= ~E1000_EXTCNF_CTRL_SWFLAG;
E1000_WRITE_REG(hw, E1000_EXTCNF_CTRL, extcnf_ctrl);
} else {
DEBUGOUT("Semaphore unexpectedly released by sw/fw/hw\n");
}
}
/**
* e1000_check_mng_mode_ich8lan - Checks management mode
* @hw: pointer to the HW structure
*
* This checks if the adapter has any manageability enabled.
* This is a function pointer entry point only called by read/write
* routines for the PHY and NVM parts.
**/
static bool e1000_check_mng_mode_ich8lan(struct e1000_hw *hw)
{
u32 fwsm;
DEBUGFUNC("e1000_check_mng_mode_ich8lan");
fwsm = E1000_READ_REG(hw, E1000_FWSM);
return (fwsm & E1000_ICH_FWSM_FW_VALID) &&
((fwsm & E1000_FWSM_MODE_MASK) ==
(E1000_ICH_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT));
}
/**
* e1000_check_mng_mode_pchlan - Checks management mode
* @hw: pointer to the HW structure
*
* This checks if the adapter has iAMT enabled.
* This is a function pointer entry point only called by read/write
* routines for the PHY and NVM parts.
**/
static bool e1000_check_mng_mode_pchlan(struct e1000_hw *hw)
{
u32 fwsm;
DEBUGFUNC("e1000_check_mng_mode_pchlan");
fwsm = E1000_READ_REG(hw, E1000_FWSM);
return (fwsm & E1000_ICH_FWSM_FW_VALID) &&
(fwsm & (E1000_ICH_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT));
}
/**
* e1000_rar_set_pch2lan - Set receive address register
* @hw: pointer to the HW structure
* @addr: pointer to the receive address
* @index: receive address array register
*
* Sets the receive address array register at index to the address passed
* in by addr. For 82579, RAR[0] is the base address register that is to
* contain the MAC address but RAR[1-6] are reserved for manageability (ME).
* Use SHRA[0-3] in place of those reserved for ME.
**/
static int e1000_rar_set_pch2lan(struct e1000_hw *hw, u8 *addr, u32 index)
{
u32 rar_low, rar_high;
DEBUGFUNC("e1000_rar_set_pch2lan");
/* HW expects these in little endian so we reverse the byte order
* from network order (big endian) to little endian
*/
rar_low = ((u32) addr[0] |
((u32) addr[1] << 8) |
((u32) addr[2] << 16) | ((u32) addr[3] << 24));
rar_high = ((u32) addr[4] | ((u32) addr[5] << 8));
/* If MAC address zero, no need to set the AV bit */
if (rar_low || rar_high)
rar_high |= E1000_RAH_AV;
if (index == 0) {
E1000_WRITE_REG(hw, E1000_RAL(index), rar_low);
E1000_WRITE_FLUSH(hw);
E1000_WRITE_REG(hw, E1000_RAH(index), rar_high);
E1000_WRITE_FLUSH(hw);
return E1000_SUCCESS;
}
/* RAR[1-6] are owned by manageability. Skip those and program the
* next address into the SHRA register array.
*/
if (index < (u32) (hw->mac.rar_entry_count)) {
s32 ret_val;
ret_val = e1000_acquire_swflag_ich8lan(hw);
if (ret_val)
goto out;
E1000_WRITE_REG(hw, E1000_SHRAL(index - 1), rar_low);
E1000_WRITE_FLUSH(hw);
E1000_WRITE_REG(hw, E1000_SHRAH(index - 1), rar_high);
E1000_WRITE_FLUSH(hw);
e1000_release_swflag_ich8lan(hw);
/* verify the register updates */
if ((E1000_READ_REG(hw, E1000_SHRAL(index - 1)) == rar_low) &&
(E1000_READ_REG(hw, E1000_SHRAH(index - 1)) == rar_high))
return E1000_SUCCESS;
DEBUGOUT2("SHRA[%d] might be locked by ME - FWSM=0x%8.8x\n",
(index - 1), E1000_READ_REG(hw, E1000_FWSM));
}
out:
DEBUGOUT1("Failed to write receive address at index %d\n", index);
return -E1000_ERR_CONFIG;
}
/**
* e1000_rar_set_pch_lpt - Set receive address registers
* @hw: pointer to the HW structure
* @addr: pointer to the receive address
* @index: receive address array register
*
* Sets the receive address register array at index to the address passed
* in by addr. For LPT, RAR[0] is the base address register that is to
* contain the MAC address. SHRA[0-10] are the shared receive address
* registers that are shared between the Host and manageability engine (ME).
**/
static int e1000_rar_set_pch_lpt(struct e1000_hw *hw, u8 *addr, u32 index)
{
u32 rar_low, rar_high;
u32 wlock_mac;
DEBUGFUNC("e1000_rar_set_pch_lpt");
/* HW expects these in little endian so we reverse the byte order
* from network order (big endian) to little endian
*/
rar_low = ((u32) addr[0] | ((u32) addr[1] << 8) |
((u32) addr[2] << 16) | ((u32) addr[3] << 24));
rar_high = ((u32) addr[4] | ((u32) addr[5] << 8));
/* If MAC address zero, no need to set the AV bit */
if (rar_low || rar_high)
rar_high |= E1000_RAH_AV;
if (index == 0) {
E1000_WRITE_REG(hw, E1000_RAL(index), rar_low);
E1000_WRITE_FLUSH(hw);
E1000_WRITE_REG(hw, E1000_RAH(index), rar_high);
E1000_WRITE_FLUSH(hw);
return E1000_SUCCESS;
}
/* The manageability engine (ME) can lock certain SHRAR registers that
* it is using - those registers are unavailable for use.
*/
if (index < hw->mac.rar_entry_count) {
wlock_mac = E1000_READ_REG(hw, E1000_FWSM) &
E1000_FWSM_WLOCK_MAC_MASK;
wlock_mac >>= E1000_FWSM_WLOCK_MAC_SHIFT;
/* Check if all SHRAR registers are locked */
if (wlock_mac == 1)
goto out;
if ((wlock_mac == 0) || (index <= wlock_mac)) {
s32 ret_val;
ret_val = e1000_acquire_swflag_ich8lan(hw);
if (ret_val)
goto out;
E1000_WRITE_REG(hw, E1000_SHRAL_PCH_LPT(index - 1),
rar_low);
E1000_WRITE_FLUSH(hw);
E1000_WRITE_REG(hw, E1000_SHRAH_PCH_LPT(index - 1),
rar_high);
E1000_WRITE_FLUSH(hw);
e1000_release_swflag_ich8lan(hw);
/* verify the register updates */
if ((E1000_READ_REG(hw, E1000_SHRAL_PCH_LPT(index - 1)) == rar_low) &&
(E1000_READ_REG(hw, E1000_SHRAH_PCH_LPT(index - 1)) == rar_high))
return E1000_SUCCESS;
}
}
out:
DEBUGOUT1("Failed to write receive address at index %d\n", index);
return -E1000_ERR_CONFIG;
}
/**
* e1000_update_mc_addr_list_pch2lan - Update Multicast addresses
* @hw: pointer to the HW structure
* @mc_addr_list: array of multicast addresses to program
* @mc_addr_count: number of multicast addresses to program
*
* Updates entire Multicast Table Array of the PCH2 MAC and PHY.
* The caller must have a packed mc_addr_list of multicast addresses.
**/
static void e1000_update_mc_addr_list_pch2lan(struct e1000_hw *hw,
u8 *mc_addr_list,
u32 mc_addr_count)
{
u16 phy_reg = 0;
int i;
s32 ret_val;
DEBUGFUNC("e1000_update_mc_addr_list_pch2lan");
e1000_update_mc_addr_list_generic(hw, mc_addr_list, mc_addr_count);
ret_val = hw->phy.ops.acquire(hw);
if (ret_val)
return;
ret_val = e1000_enable_phy_wakeup_reg_access_bm(hw, &phy_reg);
if (ret_val)
goto release;
for (i = 0; i < hw->mac.mta_reg_count; i++) {
hw->phy.ops.write_reg_page(hw, BM_MTA(i),
(u16)(hw->mac.mta_shadow[i] &
0xFFFF));
hw->phy.ops.write_reg_page(hw, (BM_MTA(i) + 1),
(u16)((hw->mac.mta_shadow[i] >> 16) &
0xFFFF));
}
e1000_disable_phy_wakeup_reg_access_bm(hw, &phy_reg);
release:
hw->phy.ops.release(hw);
}
/**
* e1000_check_reset_block_ich8lan - Check if PHY reset is blocked
* @hw: pointer to the HW structure
*
* Checks if firmware is blocking the reset of the PHY.
* This is a function pointer entry point only called by
* reset routines.
**/
static s32 e1000_check_reset_block_ich8lan(struct e1000_hw *hw)
{
u32 fwsm;
bool blocked = FALSE;
int i = 0;
DEBUGFUNC("e1000_check_reset_block_ich8lan");
do {
fwsm = E1000_READ_REG(hw, E1000_FWSM);
if (!(fwsm & E1000_ICH_FWSM_RSPCIPHY)) {
blocked = TRUE;
msec_delay(10);
continue;
}
blocked = FALSE;
} while (blocked && (i++ < 30));
return blocked ? E1000_BLK_PHY_RESET : E1000_SUCCESS;
}
/**
* e1000_write_smbus_addr - Write SMBus address to PHY needed during Sx states
* @hw: pointer to the HW structure
*
* Assumes semaphore already acquired.
*
**/
static s32 e1000_write_smbus_addr(struct e1000_hw *hw)
{
u16 phy_data;
u32 strap = E1000_READ_REG(hw, E1000_STRAP);
u32 freq = (strap & E1000_STRAP_SMT_FREQ_MASK) >>
E1000_STRAP_SMT_FREQ_SHIFT;
s32 ret_val;
strap &= E1000_STRAP_SMBUS_ADDRESS_MASK;
ret_val = e1000_read_phy_reg_hv_locked(hw, HV_SMB_ADDR, &phy_data);
if (ret_val)
return ret_val;
phy_data &= ~HV_SMB_ADDR_MASK;
phy_data |= (strap >> E1000_STRAP_SMBUS_ADDRESS_SHIFT);
phy_data |= HV_SMB_ADDR_PEC_EN | HV_SMB_ADDR_VALID;
if (hw->phy.type == e1000_phy_i217) {
/* Restore SMBus frequency */
if (freq--) {
phy_data &= ~HV_SMB_ADDR_FREQ_MASK;
phy_data |= (freq & (1 << 0)) <<
HV_SMB_ADDR_FREQ_LOW_SHIFT;
phy_data |= (freq & (1 << 1)) <<
(HV_SMB_ADDR_FREQ_HIGH_SHIFT - 1);
} else {
DEBUGOUT("Unsupported SMB frequency in PHY\n");
}
}
return e1000_write_phy_reg_hv_locked(hw, HV_SMB_ADDR, phy_data);
}
/**
* e1000_sw_lcd_config_ich8lan - SW-based LCD Configuration
* @hw: pointer to the HW structure
*
* SW should configure the LCD from the NVM extended configuration region
* as a workaround for certain parts.
**/
static s32 e1000_sw_lcd_config_ich8lan(struct e1000_hw *hw)
{
struct e1000_phy_info *phy = &hw->phy;
u32 i, data, cnf_size, cnf_base_addr, sw_cfg_mask;
s32 ret_val = E1000_SUCCESS;
u16 word_addr, reg_data, reg_addr, phy_page = 0;
DEBUGFUNC("e1000_sw_lcd_config_ich8lan");
/* Initialize the PHY from the NVM on ICH platforms. This
* is needed due to an issue where the NVM configuration is
* not properly autoloaded after power transitions.
* Therefore, after each PHY reset, we will load the
* configuration data out of the NVM manually.
*/
switch (hw->mac.type) {
case e1000_ich8lan:
if (phy->type != e1000_phy_igp_3)
return ret_val;
if ((hw->device_id == E1000_DEV_ID_ICH8_IGP_AMT) ||
(hw->device_id == E1000_DEV_ID_ICH8_IGP_C)) {
sw_cfg_mask = E1000_FEXTNVM_SW_CONFIG;
break;
}
__FALLTHROUGH;
case e1000_pchlan:
case e1000_pch2lan:
case e1000_pch_lpt:
case e1000_pch_spt:
case e1000_pch_cnp:
case e1000_pch_tgp:
sw_cfg_mask = E1000_FEXTNVM_SW_CONFIG_ICH8M;
break;
default:
return ret_val;
}
ret_val = hw->phy.ops.acquire(hw);
if (ret_val)
return ret_val;
data = E1000_READ_REG(hw, E1000_FEXTNVM);
if (!(data & sw_cfg_mask))
goto release;
/* Make sure HW does not configure LCD from PHY
* extended configuration before SW configuration
*/
data = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
if ((hw->mac.type < e1000_pch2lan) &&
(data & E1000_EXTCNF_CTRL_LCD_WRITE_ENABLE))
goto release;
cnf_size = E1000_READ_REG(hw, E1000_EXTCNF_SIZE);
cnf_size &= E1000_EXTCNF_SIZE_EXT_PCIE_LENGTH_MASK;
cnf_size >>= E1000_EXTCNF_SIZE_EXT_PCIE_LENGTH_SHIFT;
if (!cnf_size)
goto release;
cnf_base_addr = data & E1000_EXTCNF_CTRL_EXT_CNF_POINTER_MASK;
cnf_base_addr >>= E1000_EXTCNF_CTRL_EXT_CNF_POINTER_SHIFT;
if (((hw->mac.type == e1000_pchlan) &&
!(data & E1000_EXTCNF_CTRL_OEM_WRITE_ENABLE)) ||
(hw->mac.type > e1000_pchlan)) {
/* HW configures the SMBus address and LEDs when the
* OEM and LCD Write Enable bits are set in the NVM.
* When both NVM bits are cleared, SW will configure
* them instead.
*/
ret_val = e1000_write_smbus_addr(hw);
if (ret_val)
goto release;
data = E1000_READ_REG(hw, E1000_LEDCTL);
ret_val = e1000_write_phy_reg_hv_locked(hw, HV_LED_CONFIG,
(u16)data);
if (ret_val)
goto release;
}
/* Configure LCD from extended configuration region. */
/* cnf_base_addr is in DWORD */
word_addr = (u16)(cnf_base_addr << 1);
for (i = 0; i < cnf_size; i++) {
ret_val = hw->nvm.ops.read(hw, (word_addr + i * 2), 1,
&reg_data);
if (ret_val)
goto release;
ret_val = hw->nvm.ops.read(hw, (word_addr + i * 2 + 1),
1, &reg_addr);
if (ret_val)
goto release;
/* Save off the PHY page for future writes. */
if (reg_addr == IGP01E1000_PHY_PAGE_SELECT) {
phy_page = reg_data;
continue;
}
reg_addr &= PHY_REG_MASK;
reg_addr |= phy_page;
ret_val = phy->ops.write_reg_locked(hw, (u32)reg_addr,
reg_data);
if (ret_val)
goto release;
}
release:
hw->phy.ops.release(hw);
return ret_val;
}
/**
* e1000_k1_gig_workaround_hv - K1 Si workaround
* @hw: pointer to the HW structure
* @link: link up bool flag
*
* If K1 is enabled for 1Gbps, the MAC might stall when transitioning
* from a lower speed. This workaround disables K1 whenever link is at 1Gig
* If link is down, the function will restore the default K1 setting located
* in the NVM.
**/
static s32 e1000_k1_gig_workaround_hv(struct e1000_hw *hw, bool link)
{
s32 ret_val = E1000_SUCCESS;
u16 status_reg = 0;
bool k1_enable = hw->dev_spec.ich8lan.nvm_k1_enabled;
DEBUGFUNC("e1000_k1_gig_workaround_hv");
if (hw->mac.type != e1000_pchlan)
return E1000_SUCCESS;
/* Wrap the whole flow with the sw flag */
ret_val = hw->phy.ops.acquire(hw);
if (ret_val)
return ret_val;
/* Disable K1 when link is 1Gbps, otherwise use the NVM setting */
if (link) {
if (hw->phy.type == e1000_phy_82578) {
ret_val = hw->phy.ops.read_reg_locked(hw, BM_CS_STATUS,
&status_reg);
if (ret_val)
goto release;
status_reg &= (BM_CS_STATUS_LINK_UP |
BM_CS_STATUS_RESOLVED |
BM_CS_STATUS_SPEED_MASK);
if (status_reg == (BM_CS_STATUS_LINK_UP |
BM_CS_STATUS_RESOLVED |
BM_CS_STATUS_SPEED_1000))
k1_enable = FALSE;
}
if (hw->phy.type == e1000_phy_82577) {
ret_val = hw->phy.ops.read_reg_locked(hw, HV_M_STATUS,
&status_reg);
if (ret_val)
goto release;
status_reg &= (HV_M_STATUS_LINK_UP |
HV_M_STATUS_AUTONEG_COMPLETE |
HV_M_STATUS_SPEED_MASK);
if (status_reg == (HV_M_STATUS_LINK_UP |
HV_M_STATUS_AUTONEG_COMPLETE |
HV_M_STATUS_SPEED_1000))
k1_enable = FALSE;
}
/* Link stall fix for link up */
ret_val = hw->phy.ops.write_reg_locked(hw, PHY_REG(770, 19),
0x0100);
if (ret_val)
goto release;
} else {
/* Link stall fix for link down */
ret_val = hw->phy.ops.write_reg_locked(hw, PHY_REG(770, 19),
0x4100);
if (ret_val)
goto release;
}
ret_val = e1000_configure_k1_ich8lan(hw, k1_enable);
release:
hw->phy.ops.release(hw);
return ret_val;
}
/**
* e1000_configure_k1_ich8lan - Configure K1 power state
* @hw: pointer to the HW structure
* @enable: K1 state to configure
*
* Configure the K1 power state based on the provided parameter.
* Assumes semaphore already acquired.
*
* Success returns 0, Failure returns -E1000_ERR_PHY (-2)
**/
s32 e1000_configure_k1_ich8lan(struct e1000_hw *hw, bool k1_enable)
{
s32 ret_val;
u32 ctrl_reg = 0;
u32 ctrl_ext = 0;
u32 reg = 0;
u16 kmrn_reg = 0;
DEBUGFUNC("e1000_configure_k1_ich8lan");
ret_val = e1000_read_kmrn_reg_locked(hw, E1000_KMRNCTRLSTA_K1_CONFIG,
&kmrn_reg);
if (ret_val)
return ret_val;
if (k1_enable)
kmrn_reg |= E1000_KMRNCTRLSTA_K1_ENABLE;
else
kmrn_reg &= ~E1000_KMRNCTRLSTA_K1_ENABLE;
ret_val = e1000_write_kmrn_reg_locked(hw, E1000_KMRNCTRLSTA_K1_CONFIG,
kmrn_reg);
if (ret_val)
return ret_val;
usec_delay(20);
ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT);
ctrl_reg = E1000_READ_REG(hw, E1000_CTRL);
reg = ctrl_reg & ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100);
reg |= E1000_CTRL_FRCSPD;
E1000_WRITE_REG(hw, E1000_CTRL, reg);
E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_SPD_BYPS);
E1000_WRITE_FLUSH(hw);
usec_delay(20);
E1000_WRITE_REG(hw, E1000_CTRL, ctrl_reg);
E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext);
E1000_WRITE_FLUSH(hw);
usec_delay(20);
return E1000_SUCCESS;
}
/**
* e1000_oem_bits_config_ich8lan - SW-based LCD Configuration
* @hw: pointer to the HW structure
* @d0_state: boolean if entering d0 or d3 device state
*
* SW will configure Gbe Disable and LPLU based on the NVM. The four bits are
* collectively called OEM bits. The OEM Write Enable bit and SW Config bit
* in NVM determines whether HW should configure LPLU and Gbe Disable.
**/
static s32 e1000_oem_bits_config_ich8lan(struct e1000_hw *hw, bool d0_state)
{
s32 ret_val = 0;
u32 mac_reg;
u16 oem_reg;
DEBUGFUNC("e1000_oem_bits_config_ich8lan");
if (hw->mac.type < e1000_pchlan)
return ret_val;
ret_val = hw->phy.ops.acquire(hw);
if (ret_val)
return ret_val;
if (hw->mac.type == e1000_pchlan) {
mac_reg = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
if (mac_reg & E1000_EXTCNF_CTRL_OEM_WRITE_ENABLE)
goto release;
}
mac_reg = E1000_READ_REG(hw, E1000_FEXTNVM);
if (!(mac_reg & E1000_FEXTNVM_SW_CONFIG_ICH8M))
goto release;
mac_reg = E1000_READ_REG(hw, E1000_PHY_CTRL);
ret_val = hw->phy.ops.read_reg_locked(hw, HV_OEM_BITS, &oem_reg);
if (ret_val)
goto release;
oem_reg &= ~(HV_OEM_BITS_GBE_DIS | HV_OEM_BITS_LPLU);
if (d0_state) {
if (mac_reg & E1000_PHY_CTRL_GBE_DISABLE)
oem_reg |= HV_OEM_BITS_GBE_DIS;
if (mac_reg & E1000_PHY_CTRL_D0A_LPLU)
oem_reg |= HV_OEM_BITS_LPLU;
} else {
if (mac_reg & (E1000_PHY_CTRL_GBE_DISABLE |
E1000_PHY_CTRL_NOND0A_GBE_DISABLE))
oem_reg |= HV_OEM_BITS_GBE_DIS;
if (mac_reg & (E1000_PHY_CTRL_D0A_LPLU |
E1000_PHY_CTRL_NOND0A_LPLU))
oem_reg |= HV_OEM_BITS_LPLU;
}
/* Set Restart auto-neg to activate the bits */
if ((d0_state || (hw->mac.type != e1000_pchlan)) &&
!hw->phy.ops.check_reset_block(hw))
oem_reg |= HV_OEM_BITS_RESTART_AN;
ret_val = hw->phy.ops.write_reg_locked(hw, HV_OEM_BITS, oem_reg);
release:
hw->phy.ops.release(hw);
return ret_val;
}
/**
* e1000_set_mdio_slow_mode_hv - Set slow MDIO access mode
* @hw: pointer to the HW structure
**/
static s32 e1000_set_mdio_slow_mode_hv(struct e1000_hw *hw)
{
s32 ret_val;
u16 data;
DEBUGFUNC("e1000_set_mdio_slow_mode_hv");
ret_val = hw->phy.ops.read_reg(hw, HV_KMRN_MODE_CTRL, &data);
if (ret_val)
return ret_val;
data |= HV_KMRN_MDIO_SLOW;
ret_val = hw->phy.ops.write_reg(hw, HV_KMRN_MODE_CTRL, data);
return ret_val;
}
/**
* e1000_hv_phy_workarounds_ich8lan - A series of Phy workarounds to be
* done after every PHY reset.
**/
static s32 e1000_hv_phy_workarounds_ich8lan(struct e1000_hw *hw)
{
s32 ret_val = E1000_SUCCESS;
u16 phy_data;
DEBUGFUNC("e1000_hv_phy_workarounds_ich8lan");
if (hw->mac.type != e1000_pchlan)
return E1000_SUCCESS;
/* Set MDIO slow mode before any other MDIO access */
if (hw->phy.type == e1000_phy_82577) {
ret_val = e1000_set_mdio_slow_mode_hv(hw);
if (ret_val)
return ret_val;
}
if (((hw->phy.type == e1000_phy_82577) &&
((hw->phy.revision == 1) || (hw->phy.revision == 2))) ||
((hw->phy.type == e1000_phy_82578) && (hw->phy.revision == 1))) {
/* Disable generation of early preamble */
ret_val = hw->phy.ops.write_reg(hw, PHY_REG(769, 25), 0x4431);
if (ret_val)
return ret_val;
/* Preamble tuning for SSC */
ret_val = hw->phy.ops.write_reg(hw, HV_KMRN_FIFO_CTRLSTA,
0xA204);
if (ret_val)
return ret_val;
}
if (hw->phy.type == e1000_phy_82578) {
/* Return registers to default by doing a soft reset then
* writing 0x3140 to the control register.
*/
if (hw->phy.revision < 2) {
e1000_phy_sw_reset_generic(hw);
ret_val = hw->phy.ops.write_reg(hw, PHY_CONTROL,
0x3140);
if (ret_val)
return ret_val;
}
}
/* Select page 0 */
ret_val = hw->phy.ops.acquire(hw);
if (ret_val)
return ret_val;
hw->phy.addr = 1;
ret_val = e1000_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, 0);
hw->phy.ops.release(hw);
if (ret_val)
return ret_val;
/* Configure the K1 Si workaround during phy reset assuming there is
* link so that it disables K1 if link is in 1Gbps.
*/
ret_val = e1000_k1_gig_workaround_hv(hw, TRUE);
if (ret_val)
return ret_val;
/* Workaround for link disconnects on a busy hub in half duplex */
ret_val = hw->phy.ops.acquire(hw);
if (ret_val)
return ret_val;
ret_val = hw->phy.ops.read_reg_locked(hw, BM_PORT_GEN_CFG, &phy_data);
if (ret_val)
goto release;
ret_val = hw->phy.ops.write_reg_locked(hw, BM_PORT_GEN_CFG,
phy_data & 0x00FF);
if (ret_val)
goto release;
/* set MSE higher to enable link to stay up when noise is high */
ret_val = e1000_write_emi_reg_locked(hw, I82577_MSE_THRESHOLD, 0x0034);
release:
hw->phy.ops.release(hw);
return ret_val;
}
/**
* e1000_copy_rx_addrs_to_phy_ich8lan - Copy Rx addresses from MAC to PHY
* @hw: pointer to the HW structure
**/
void e1000_copy_rx_addrs_to_phy_ich8lan(struct e1000_hw *hw)
{
u32 mac_reg;
u16 i, phy_reg = 0;
s32 ret_val;
DEBUGFUNC("e1000_copy_rx_addrs_to_phy_ich8lan");
ret_val = hw->phy.ops.acquire(hw);
if (ret_val)
return;
ret_val = e1000_enable_phy_wakeup_reg_access_bm(hw, &phy_reg);
if (ret_val)
goto release;
/* Copy both RAL/H (rar_entry_count) and SHRAL/H to PHY */
for (i = 0; i < (hw->mac.rar_entry_count); i++) {
mac_reg = E1000_READ_REG(hw, E1000_RAL(i));
hw->phy.ops.write_reg_page(hw, BM_RAR_L(i),
(u16)(mac_reg & 0xFFFF));
hw->phy.ops.write_reg_page(hw, BM_RAR_M(i),
(u16)((mac_reg >> 16) & 0xFFFF));
mac_reg = E1000_READ_REG(hw, E1000_RAH(i));
hw->phy.ops.write_reg_page(hw, BM_RAR_H(i),
(u16)(mac_reg & 0xFFFF));
hw->phy.ops.write_reg_page(hw, BM_RAR_CTRL(i),
(u16)((mac_reg & E1000_RAH_AV)
>> 16));
}
e1000_disable_phy_wakeup_reg_access_bm(hw, &phy_reg);
release:
hw->phy.ops.release(hw);
}
static u32 e1000_calc_rx_da_crc(u8 mac[])
{
u32 poly = 0xEDB88320; /* Polynomial for 802.3 CRC calculation */
u32 i, j, mask, crc;
DEBUGFUNC("e1000_calc_rx_da_crc");
crc = 0xffffffff;
for (i = 0; i < 6; i++) {
crc = crc ^ mac[i];
for (j = 8; j > 0; j--) {
mask = (crc & 1) * (-1);
crc = (crc >> 1) ^ (poly & mask);
}
}
return ~crc;
}
/**
* e1000_lv_jumbo_workaround_ich8lan - required for jumbo frame operation
* with 82579 PHY
* @hw: pointer to the HW structure
* @enable: flag to enable/disable workaround when enabling/disabling jumbos
**/
s32 e1000_lv_jumbo_workaround_ich8lan(struct e1000_hw *hw, bool enable)
{
s32 ret_val = E1000_SUCCESS;
u16 phy_reg, data;
u32 mac_reg;
u16 i;
DEBUGFUNC("e1000_lv_jumbo_workaround_ich8lan");
if (hw->mac.type < e1000_pch2lan)
return E1000_SUCCESS;
/* disable Rx path while enabling/disabling workaround */
hw->phy.ops.read_reg(hw, PHY_REG(769, 20), &phy_reg);
ret_val = hw->phy.ops.write_reg(hw, PHY_REG(769, 20),
phy_reg | (1 << 14));
if (ret_val)
return ret_val;
if (enable) {
/* Write Rx addresses (rar_entry_count for RAL/H, and
* SHRAL/H) and initial CRC values to the MAC
*/
for (i = 0; i < hw->mac.rar_entry_count; i++) {
u8 mac_addr[ETH_ADDR_LEN] = {0};
u32 addr_high, addr_low;
addr_high = E1000_READ_REG(hw, E1000_RAH(i));
if (!(addr_high & E1000_RAH_AV))
continue;
addr_low = E1000_READ_REG(hw, E1000_RAL(i));
mac_addr[0] = (addr_low & 0xFF);
mac_addr[1] = ((addr_low >> 8) & 0xFF);
mac_addr[2] = ((addr_low >> 16) & 0xFF);
mac_addr[3] = ((addr_low >> 24) & 0xFF);
mac_addr[4] = (addr_high & 0xFF);
mac_addr[5] = ((addr_high >> 8) & 0xFF);
E1000_WRITE_REG(hw, E1000_PCH_RAICC(i),
e1000_calc_rx_da_crc(mac_addr));
}
/* Write Rx addresses to the PHY */
e1000_copy_rx_addrs_to_phy_ich8lan(hw);
/* Enable jumbo frame workaround in the MAC */
mac_reg = E1000_READ_REG(hw, E1000_FFLT_DBG);
mac_reg &= ~(1 << 14);
mac_reg |= (7 << 15);
E1000_WRITE_REG(hw, E1000_FFLT_DBG, mac_reg);
mac_reg = E1000_READ_REG(hw, E1000_RCTL);
mac_reg |= E1000_RCTL_SECRC;
E1000_WRITE_REG(hw, E1000_RCTL, mac_reg);
ret_val = e1000_read_kmrn_reg_generic(hw,
E1000_KMRNCTRLSTA_CTRL_OFFSET,
&data);
if (ret_val)
return ret_val;
ret_val = e1000_write_kmrn_reg_generic(hw,
E1000_KMRNCTRLSTA_CTRL_OFFSET,
data | (1 << 0));
if (ret_val)
return ret_val;
ret_val = e1000_read_kmrn_reg_generic(hw,
E1000_KMRNCTRLSTA_HD_CTRL,
&data);
if (ret_val)
return ret_val;
data &= ~(0xF << 8);
data |= (0xB << 8);
ret_val = e1000_write_kmrn_reg_generic(hw,
E1000_KMRNCTRLSTA_HD_CTRL,
data);
if (ret_val)
return ret_val;
/* Enable jumbo frame workaround in the PHY */
hw->phy.ops.read_reg(hw, PHY_REG(769, 23), &data);
data &= ~(0x7F << 5);
data |= (0x37 << 5);
ret_val = hw->phy.ops.write_reg(hw, PHY_REG(769, 23), data);
if (ret_val)
return ret_val;
hw->phy.ops.read_reg(hw, PHY_REG(769, 16), &data);
data &= ~(1 << 13);
ret_val = hw->phy.ops.write_reg(hw, PHY_REG(769, 16), data);
if (ret_val)
return ret_val;
hw->phy.ops.read_reg(hw, PHY_REG(776, 20), &data);
data &= ~(0x3FF << 2);
data |= (E1000_TX_PTR_GAP << 2);
ret_val = hw->phy.ops.write_reg(hw, PHY_REG(776, 20), data);
if (ret_val)
return ret_val;
ret_val = hw->phy.ops.write_reg(hw, PHY_REG(776, 23), 0xF100);
if (ret_val)
return ret_val;
hw->phy.ops.read_reg(hw, HV_PM_CTRL, &data);
ret_val = hw->phy.ops.write_reg(hw, HV_PM_CTRL, data |
(1 << 10));
if (ret_val)
return ret_val;
} else {
/* Write MAC register values back to h/w defaults */
mac_reg = E1000_READ_REG(hw, E1000_FFLT_DBG);
mac_reg &= ~(0xF << 14);
E1000_WRITE_REG(hw, E1000_FFLT_DBG, mac_reg);
mac_reg = E1000_READ_REG(hw, E1000_RCTL);
mac_reg &= ~E1000_RCTL_SECRC;
E1000_WRITE_REG(hw, E1000_RCTL, mac_reg);
ret_val = e1000_read_kmrn_reg_generic(hw,
E1000_KMRNCTRLSTA_CTRL_OFFSET,
&data);
if (ret_val)
return ret_val;
ret_val = e1000_write_kmrn_reg_generic(hw,
E1000_KMRNCTRLSTA_CTRL_OFFSET,
data & ~(1 << 0));
if (ret_val)
return ret_val;
ret_val = e1000_read_kmrn_reg_generic(hw,
E1000_KMRNCTRLSTA_HD_CTRL,
&data);
if (ret_val)
return ret_val;
data &= ~(0xF << 8);
data |= (0xB << 8);
ret_val = e1000_write_kmrn_reg_generic(hw,
E1000_KMRNCTRLSTA_HD_CTRL,
data);
if (ret_val)
return ret_val;
/* Write PHY register values back to h/w defaults */
hw->phy.ops.read_reg(hw, PHY_REG(769, 23), &data);
data &= ~(0x7F << 5);
ret_val = hw->phy.ops.write_reg(hw, PHY_REG(769, 23), data);
if (ret_val)
return ret_val;
hw->phy.ops.read_reg(hw, PHY_REG(769, 16), &data);
data |= (1 << 13);
ret_val = hw->phy.ops.write_reg(hw, PHY_REG(769, 16), data);
if (ret_val)
return ret_val;
hw->phy.ops.read_reg(hw, PHY_REG(776, 20), &data);
data &= ~(0x3FF << 2);
data |= (0x8 << 2);
ret_val = hw->phy.ops.write_reg(hw, PHY_REG(776, 20), data);
if (ret_val)
return ret_val;
ret_val = hw->phy.ops.write_reg(hw, PHY_REG(776, 23), 0x7E00);
if (ret_val)
return ret_val;
hw->phy.ops.read_reg(hw, HV_PM_CTRL, &data);
ret_val = hw->phy.ops.write_reg(hw, HV_PM_CTRL, data &
~(1 << 10));
if (ret_val)
return ret_val;
}
/* re-enable Rx path after enabling/disabling workaround */
return hw->phy.ops.write_reg(hw, PHY_REG(769, 20), phy_reg &
~(1 << 14));
}
/**
* e1000_lv_phy_workarounds_ich8lan - A series of Phy workarounds to be
* done after every PHY reset.
**/
static s32 e1000_lv_phy_workarounds_ich8lan(struct e1000_hw *hw)
{
s32 ret_val = E1000_SUCCESS;
DEBUGFUNC("e1000_lv_phy_workarounds_ich8lan");
if (hw->mac.type != e1000_pch2lan)
return E1000_SUCCESS;
/* Set MDIO slow mode before any other MDIO access */
ret_val = e1000_set_mdio_slow_mode_hv(hw);
if (ret_val)
return ret_val;
ret_val = hw->phy.ops.acquire(hw);
if (ret_val)
return ret_val;
/* set MSE higher to enable link to stay up when noise is high */
ret_val = e1000_write_emi_reg_locked(hw, I82579_MSE_THRESHOLD, 0x0034);
if (ret_val)
goto release;
/* drop link after 5 times MSE threshold was reached */
ret_val = e1000_write_emi_reg_locked(hw, I82579_MSE_LINK_DOWN, 0x0005);
release:
hw->phy.ops.release(hw);
return ret_val;
}
/**
* e1000_k1_gig_workaround_lv - K1 Si workaround
* @hw: pointer to the HW structure
*
* Workaround to set the K1 beacon duration for 82579 parts in 10Mbps
* Disable K1 for 1000 and 100 speeds
**/
static s32 e1000_k1_workaround_lv(struct e1000_hw *hw)
{
s32 ret_val = E1000_SUCCESS;
u16 status_reg = 0;
DEBUGFUNC("e1000_k1_workaround_lv");
if (hw->mac.type != e1000_pch2lan)
return E1000_SUCCESS;
/* Set K1 beacon duration based on 10Mbs speed */
ret_val = hw->phy.ops.read_reg(hw, HV_M_STATUS, &status_reg);
if (ret_val)
return ret_val;
if ((status_reg & (HV_M_STATUS_LINK_UP | HV_M_STATUS_AUTONEG_COMPLETE))
== (HV_M_STATUS_LINK_UP | HV_M_STATUS_AUTONEG_COMPLETE)) {
if (status_reg &
(HV_M_STATUS_SPEED_1000 | HV_M_STATUS_SPEED_100)) {
u16 pm_phy_reg;
/* LV 1G/100 Packet drop issue wa */
ret_val = hw->phy.ops.read_reg(hw, HV_PM_CTRL,
&pm_phy_reg);
if (ret_val)
return ret_val;
pm_phy_reg &= ~HV_PM_CTRL_K1_ENABLE;
ret_val = hw->phy.ops.write_reg(hw, HV_PM_CTRL,
pm_phy_reg);
if (ret_val)
return ret_val;
} else {
u32 mac_reg;
mac_reg = E1000_READ_REG(hw, E1000_FEXTNVM4);
mac_reg &= ~E1000_FEXTNVM4_BEACON_DURATION_MASK;
mac_reg |= E1000_FEXTNVM4_BEACON_DURATION_16USEC;
E1000_WRITE_REG(hw, E1000_FEXTNVM4, mac_reg);
}
}
return ret_val;
}
/**
* e1000_gate_hw_phy_config_ich8lan - disable PHY config via hardware
* @hw: pointer to the HW structure
* @gate: boolean set to TRUE to gate, FALSE to ungate
*
* Gate/ungate the automatic PHY configuration via hardware; perform
* the configuration via software instead.
**/
static void e1000_gate_hw_phy_config_ich8lan(struct e1000_hw *hw, bool gate)
{
u32 extcnf_ctrl;
DEBUGFUNC("e1000_gate_hw_phy_config_ich8lan");
if (hw->mac.type < e1000_pch2lan)
return;
extcnf_ctrl = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
if (gate)
extcnf_ctrl |= E1000_EXTCNF_CTRL_GATE_PHY_CFG;
else
extcnf_ctrl &= ~E1000_EXTCNF_CTRL_GATE_PHY_CFG;
E1000_WRITE_REG(hw, E1000_EXTCNF_CTRL, extcnf_ctrl);
}
/**
* e1000_lan_init_done_ich8lan - Check for PHY config completion
* @hw: pointer to the HW structure
*
* Check the appropriate indication the MAC has finished configuring the
* PHY after a software reset.
**/
static void e1000_lan_init_done_ich8lan(struct e1000_hw *hw)
{
u32 data, loop = E1000_ICH8_LAN_INIT_TIMEOUT;
DEBUGFUNC("e1000_lan_init_done_ich8lan");
/* Wait for basic configuration completes before proceeding */
do {
data = E1000_READ_REG(hw, E1000_STATUS);
data &= E1000_STATUS_LAN_INIT_DONE;
usec_delay(100);
} while ((!data) && --loop);
/* If basic configuration is incomplete before the above loop
* count reaches 0, loading the configuration from NVM will
* leave the PHY in a bad state possibly resulting in no link.
*/
if (loop == 0)
DEBUGOUT("LAN_INIT_DONE not set, increase timeout\n");
/* Clear the Init Done bit for the next init event */
data = E1000_READ_REG(hw, E1000_STATUS);
data &= ~E1000_STATUS_LAN_INIT_DONE;
E1000_WRITE_REG(hw, E1000_STATUS, data);
}
/**
* e1000_post_phy_reset_ich8lan - Perform steps required after a PHY reset
* @hw: pointer to the HW structure
**/
static s32 e1000_post_phy_reset_ich8lan(struct e1000_hw *hw)
{
s32 ret_val = E1000_SUCCESS;
u16 reg;
DEBUGFUNC("e1000_post_phy_reset_ich8lan");
if (hw->phy.ops.check_reset_block(hw))
return E1000_SUCCESS;
/* Allow time for h/w to get to quiescent state after reset */
msec_delay(10);
/* Perform any necessary post-reset workarounds */
switch (hw->mac.type) {
case e1000_pchlan:
ret_val = e1000_hv_phy_workarounds_ich8lan(hw);
if (ret_val)
return ret_val;
break;
case e1000_pch2lan:
ret_val = e1000_lv_phy_workarounds_ich8lan(hw);
if (ret_val)
return ret_val;
break;
default:
break;
}
/* Clear the host wakeup bit after lcd reset */
if (hw->mac.type >= e1000_pchlan) {
hw->phy.ops.read_reg(hw, BM_PORT_GEN_CFG, &reg);
reg &= ~BM_WUC_HOST_WU_BIT;
hw->phy.ops.write_reg(hw, BM_PORT_GEN_CFG, reg);
}
/* Configure the LCD with the extended configuration region in NVM */
ret_val = e1000_sw_lcd_config_ich8lan(hw);
if (ret_val)
return ret_val;
/* Configure the LCD with the OEM bits in NVM */
ret_val = e1000_oem_bits_config_ich8lan(hw, TRUE);
if (hw->mac.type == e1000_pch2lan) {
/* Ungate automatic PHY configuration on non-managed 82579 */
if (!(E1000_READ_REG(hw, E1000_FWSM) &
E1000_ICH_FWSM_FW_VALID)) {
msec_delay(10);
e1000_gate_hw_phy_config_ich8lan(hw, FALSE);
}
/* Set EEE LPI Update Timer to 200usec */
ret_val = hw->phy.ops.acquire(hw);
if (ret_val)
return ret_val;
ret_val = e1000_write_emi_reg_locked(hw,
I82579_LPI_UPDATE_TIMER,
0x1387);
hw->phy.ops.release(hw);
}
return ret_val;
}
/**
* e1000_phy_hw_reset_ich8lan - Performs a PHY reset
* @hw: pointer to the HW structure
*
* Resets the PHY
* This is a function pointer entry point called by drivers
* or other shared routines.
**/
static s32 e1000_phy_hw_reset_ich8lan(struct e1000_hw *hw)
{
s32 ret_val = E1000_SUCCESS;
DEBUGFUNC("e1000_phy_hw_reset_ich8lan");
/* Gate automatic PHY configuration by hardware on non-managed 82579 */
if ((hw->mac.type == e1000_pch2lan) &&
!(E1000_READ_REG(hw, E1000_FWSM) & E1000_ICH_FWSM_FW_VALID))
e1000_gate_hw_phy_config_ich8lan(hw, TRUE);
ret_val = e1000_phy_hw_reset_generic(hw);
if (ret_val)
return ret_val;
return e1000_post_phy_reset_ich8lan(hw);
}
/**
* e1000_set_lplu_state_pchlan - Set Low Power Link Up state
* @hw: pointer to the HW structure
* @active: TRUE to enable LPLU, FALSE to disable
*
* Sets the LPLU state according to the active flag. For PCH, if OEM write
* bit are disabled in the NVM, writing the LPLU bits in the MAC will not set
* the phy speed. This function will manually set the LPLU bit and restart