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linux/drivers/net/ethernet/intel/e1000e/82571.c
Fabian Frederick 4145ce0f59 e1000e: remove unnecessary break after return 
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-20 21:30:18 -07:00

2064 lines
54 KiB
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/* Intel PRO/1000 Linux driver
* Copyright(c) 1999 - 2014 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* The full GNU General Public License is included in this distribution in
* the file called "COPYING".
*
* Contact Information:
* Linux NICS <linux.nics@intel.com>
* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*/
/* 82571EB Gigabit Ethernet Controller
* 82571EB Gigabit Ethernet Controller (Copper)
* 82571EB Gigabit Ethernet Controller (Fiber)
* 82571EB Dual Port Gigabit Mezzanine Adapter
* 82571EB Quad Port Gigabit Mezzanine Adapter
* 82571PT Gigabit PT Quad Port Server ExpressModule
* 82572EI Gigabit Ethernet Controller (Copper)
* 82572EI Gigabit Ethernet Controller (Fiber)
* 82572EI Gigabit Ethernet Controller
* 82573V Gigabit Ethernet Controller (Copper)
* 82573E Gigabit Ethernet Controller (Copper)
* 82573L Gigabit Ethernet Controller
* 82574L Gigabit Network Connection
* 82583V Gigabit Network Connection
*/
#include "e1000.h"
static s32 e1000_get_phy_id_82571(struct e1000_hw *hw);
static s32 e1000_setup_copper_link_82571(struct e1000_hw *hw);
static s32 e1000_setup_fiber_serdes_link_82571(struct e1000_hw *hw);
static s32 e1000_check_for_serdes_link_82571(struct e1000_hw *hw);
static s32 e1000_write_nvm_eewr_82571(struct e1000_hw *hw, u16 offset,
u16 words, u16 *data);
static s32 e1000_fix_nvm_checksum_82571(struct e1000_hw *hw);
static void e1000_initialize_hw_bits_82571(struct e1000_hw *hw);
static void e1000_clear_hw_cntrs_82571(struct e1000_hw *hw);
static bool e1000_check_mng_mode_82574(struct e1000_hw *hw);
static s32 e1000_led_on_82574(struct e1000_hw *hw);
static void e1000_put_hw_semaphore_82571(struct e1000_hw *hw);
static void e1000_power_down_phy_copper_82571(struct e1000_hw *hw);
static void e1000_put_hw_semaphore_82573(struct e1000_hw *hw);
static s32 e1000_get_hw_semaphore_82574(struct e1000_hw *hw);
static void e1000_put_hw_semaphore_82574(struct e1000_hw *hw);
static s32 e1000_set_d0_lplu_state_82574(struct e1000_hw *hw, bool active);
static s32 e1000_set_d3_lplu_state_82574(struct e1000_hw *hw, bool active);
/**
* e1000_init_phy_params_82571 - Init PHY func ptrs.
* @hw: pointer to the HW structure
**/
static s32 e1000_init_phy_params_82571(struct e1000_hw *hw)
{
struct e1000_phy_info *phy = &hw->phy;
s32 ret_val;
if (hw->phy.media_type != e1000_media_type_copper) {
phy->type = e1000_phy_none;
return 0;
}
phy->addr = 1;
phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
phy->reset_delay_us = 100;
phy->ops.power_up = e1000_power_up_phy_copper;
phy->ops.power_down = e1000_power_down_phy_copper_82571;
switch (hw->mac.type) {
case e1000_82571:
case e1000_82572:
phy->type = e1000_phy_igp_2;
break;
case e1000_82573:
phy->type = e1000_phy_m88;
break;
case e1000_82574:
case e1000_82583:
phy->type = e1000_phy_bm;
phy->ops.acquire = e1000_get_hw_semaphore_82574;
phy->ops.release = e1000_put_hw_semaphore_82574;
phy->ops.set_d0_lplu_state = e1000_set_d0_lplu_state_82574;
phy->ops.set_d3_lplu_state = e1000_set_d3_lplu_state_82574;
break;
default:
return -E1000_ERR_PHY;
}
/* This can only be done after all function pointers are setup. */
ret_val = e1000_get_phy_id_82571(hw);
if (ret_val) {
e_dbg("Error getting PHY ID\n");
return ret_val;
}
/* Verify phy id */
switch (hw->mac.type) {
case e1000_82571:
case e1000_82572:
if (phy->id != IGP01E1000_I_PHY_ID)
ret_val = -E1000_ERR_PHY;
break;
case e1000_82573:
if (phy->id != M88E1111_I_PHY_ID)
ret_val = -E1000_ERR_PHY;
break;
case e1000_82574:
case e1000_82583:
if (phy->id != BME1000_E_PHY_ID_R2)
ret_val = -E1000_ERR_PHY;
break;
default:
ret_val = -E1000_ERR_PHY;
break;
}
if (ret_val)
e_dbg("PHY ID unknown: type = 0x%08x\n", phy->id);
return ret_val;
}
/**
* e1000_init_nvm_params_82571 - Init NVM func ptrs.
* @hw: pointer to the HW structure
**/
static s32 e1000_init_nvm_params_82571(struct e1000_hw *hw)
{
struct e1000_nvm_info *nvm = &hw->nvm;
u32 eecd = er32(EECD);
u16 size;
nvm->opcode_bits = 8;
nvm->delay_usec = 1;
switch (nvm->override) {
case e1000_nvm_override_spi_large:
nvm->page_size = 32;
nvm->address_bits = 16;
break;
case e1000_nvm_override_spi_small:
nvm->page_size = 8;
nvm->address_bits = 8;
break;
default:
nvm->page_size = eecd & E1000_EECD_ADDR_BITS ? 32 : 8;
nvm->address_bits = eecd & E1000_EECD_ADDR_BITS ? 16 : 8;
break;
}
switch (hw->mac.type) {
case e1000_82573:
case e1000_82574:
case e1000_82583:
if (((eecd >> 15) & 0x3) == 0x3) {
nvm->type = e1000_nvm_flash_hw;
nvm->word_size = 2048;
/* Autonomous Flash update bit must be cleared due
* to Flash update issue.
*/
eecd &= ~E1000_EECD_AUPDEN;
ew32(EECD, eecd);
break;
}
/* Fall Through */
default:
nvm->type = e1000_nvm_eeprom_spi;
size = (u16)((eecd & E1000_EECD_SIZE_EX_MASK) >>
E1000_EECD_SIZE_EX_SHIFT);
/* Added to a constant, "size" becomes the left-shift value
* for setting word_size.
*/
size += NVM_WORD_SIZE_BASE_SHIFT;
/* EEPROM access above 16k is unsupported */
if (size > 14)
size = 14;
nvm->word_size = 1 << size;
break;
}
/* Function Pointers */
switch (hw->mac.type) {
case e1000_82574:
case e1000_82583:
nvm->ops.acquire = e1000_get_hw_semaphore_82574;
nvm->ops.release = e1000_put_hw_semaphore_82574;
break;
default:
break;
}
return 0;
}
/**
* e1000_init_mac_params_82571 - Init MAC func ptrs.
* @hw: pointer to the HW structure
**/
static s32 e1000_init_mac_params_82571(struct e1000_hw *hw)
{
struct e1000_mac_info *mac = &hw->mac;
u32 swsm = 0;
u32 swsm2 = 0;
bool force_clear_smbi = false;
/* Set media type and media-dependent function pointers */
switch (hw->adapter->pdev->device) {
case E1000_DEV_ID_82571EB_FIBER:
case E1000_DEV_ID_82572EI_FIBER:
case E1000_DEV_ID_82571EB_QUAD_FIBER:
hw->phy.media_type = e1000_media_type_fiber;
mac->ops.setup_physical_interface =
e1000_setup_fiber_serdes_link_82571;
mac->ops.check_for_link = e1000e_check_for_fiber_link;
mac->ops.get_link_up_info =
e1000e_get_speed_and_duplex_fiber_serdes;
break;
case E1000_DEV_ID_82571EB_SERDES:
case E1000_DEV_ID_82571EB_SERDES_DUAL:
case E1000_DEV_ID_82571EB_SERDES_QUAD:
case E1000_DEV_ID_82572EI_SERDES:
hw->phy.media_type = e1000_media_type_internal_serdes;
mac->ops.setup_physical_interface =
e1000_setup_fiber_serdes_link_82571;
mac->ops.check_for_link = e1000_check_for_serdes_link_82571;
mac->ops.get_link_up_info =
e1000e_get_speed_and_duplex_fiber_serdes;
break;
default:
hw->phy.media_type = e1000_media_type_copper;
mac->ops.setup_physical_interface =
e1000_setup_copper_link_82571;
mac->ops.check_for_link = e1000e_check_for_copper_link;
mac->ops.get_link_up_info = e1000e_get_speed_and_duplex_copper;
break;
}
/* Set mta register count */
mac->mta_reg_count = 128;
/* Set rar entry count */
mac->rar_entry_count = E1000_RAR_ENTRIES;
/* Adaptive IFS supported */
mac->adaptive_ifs = true;
/* MAC-specific function pointers */
switch (hw->mac.type) {
case e1000_82573:
mac->ops.set_lan_id = e1000_set_lan_id_single_port;
mac->ops.check_mng_mode = e1000e_check_mng_mode_generic;
mac->ops.led_on = e1000e_led_on_generic;
mac->ops.blink_led = e1000e_blink_led_generic;
/* FWSM register */
mac->has_fwsm = true;
/* ARC supported; valid only if manageability features are
* enabled.
*/
mac->arc_subsystem_valid = !!(er32(FWSM) &
E1000_FWSM_MODE_MASK);
break;
case e1000_82574:
case e1000_82583:
mac->ops.set_lan_id = e1000_set_lan_id_single_port;
mac->ops.check_mng_mode = e1000_check_mng_mode_82574;
mac->ops.led_on = e1000_led_on_82574;
break;
default:
mac->ops.check_mng_mode = e1000e_check_mng_mode_generic;
mac->ops.led_on = e1000e_led_on_generic;
mac->ops.blink_led = e1000e_blink_led_generic;
/* FWSM register */
mac->has_fwsm = true;
break;
}
/* Ensure that the inter-port SWSM.SMBI lock bit is clear before
* first NVM or PHY access. This should be done for single-port
* devices, and for one port only on dual-port devices so that
* for those devices we can still use the SMBI lock to synchronize
* inter-port accesses to the PHY & NVM.
*/
switch (hw->mac.type) {
case e1000_82571:
case e1000_82572:
swsm2 = er32(SWSM2);
if (!(swsm2 & E1000_SWSM2_LOCK)) {
/* Only do this for the first interface on this card */
ew32(SWSM2, swsm2 | E1000_SWSM2_LOCK);
force_clear_smbi = true;
} else {
force_clear_smbi = false;
}
break;
default:
force_clear_smbi = true;
break;
}
if (force_clear_smbi) {
/* Make sure SWSM.SMBI is clear */
swsm = er32(SWSM);
if (swsm & E1000_SWSM_SMBI) {
/* This bit should not be set on a first interface, and
* indicates that the bootagent or EFI code has
* improperly left this bit enabled
*/
e_dbg("Please update your 82571 Bootagent\n");
}
ew32(SWSM, swsm & ~E1000_SWSM_SMBI);
}
/* Initialize device specific counter of SMBI acquisition timeouts. */
hw->dev_spec.e82571.smb_counter = 0;
return 0;
}
static s32 e1000_get_variants_82571(struct e1000_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
static int global_quad_port_a; /* global port a indication */
struct pci_dev *pdev = adapter->pdev;
int is_port_b = er32(STATUS) & E1000_STATUS_FUNC_1;
s32 rc;
rc = e1000_init_mac_params_82571(hw);
if (rc)
return rc;
rc = e1000_init_nvm_params_82571(hw);
if (rc)
return rc;
rc = e1000_init_phy_params_82571(hw);
if (rc)
return rc;
/* tag quad port adapters first, it's used below */
switch (pdev->device) {
case E1000_DEV_ID_82571EB_QUAD_COPPER:
case E1000_DEV_ID_82571EB_QUAD_FIBER:
case E1000_DEV_ID_82571EB_QUAD_COPPER_LP:
case E1000_DEV_ID_82571PT_QUAD_COPPER:
adapter->flags |= FLAG_IS_QUAD_PORT;
/* mark the first port */
if (global_quad_port_a == 0)
adapter->flags |= FLAG_IS_QUAD_PORT_A;
/* Reset for multiple quad port adapters */
global_quad_port_a++;
if (global_quad_port_a == 4)
global_quad_port_a = 0;
break;
default:
break;
}
switch (adapter->hw.mac.type) {
case e1000_82571:
/* these dual ports don't have WoL on port B at all */
if (((pdev->device == E1000_DEV_ID_82571EB_FIBER) ||
(pdev->device == E1000_DEV_ID_82571EB_SERDES) ||
(pdev->device == E1000_DEV_ID_82571EB_COPPER)) &&
(is_port_b))
adapter->flags &= ~FLAG_HAS_WOL;
/* quad ports only support WoL on port A */
if (adapter->flags & FLAG_IS_QUAD_PORT &&
(!(adapter->flags & FLAG_IS_QUAD_PORT_A)))
adapter->flags &= ~FLAG_HAS_WOL;
/* Does not support WoL on any port */
if (pdev->device == E1000_DEV_ID_82571EB_SERDES_QUAD)
adapter->flags &= ~FLAG_HAS_WOL;
break;
case e1000_82573:
if (pdev->device == E1000_DEV_ID_82573L) {
adapter->flags |= FLAG_HAS_JUMBO_FRAMES;
adapter->max_hw_frame_size = DEFAULT_JUMBO;
}
break;
default:
break;
}
return 0;
}
/**
* e1000_get_phy_id_82571 - Retrieve the PHY ID and revision
* @hw: pointer to the HW structure
*
* Reads the PHY registers and stores the PHY ID and possibly the PHY
* revision in the hardware structure.
**/
static s32 e1000_get_phy_id_82571(struct e1000_hw *hw)
{
struct e1000_phy_info *phy = &hw->phy;
s32 ret_val;
u16 phy_id = 0;
switch (hw->mac.type) {
case e1000_82571:
case e1000_82572:
/* The 82571 firmware may still be configuring the PHY.
* In this case, we cannot access the PHY until the
* configuration is done. So we explicitly set the
* PHY ID.
*/
phy->id = IGP01E1000_I_PHY_ID;
break;
case e1000_82573:
return e1000e_get_phy_id(hw);
case e1000_82574:
case e1000_82583:
ret_val = e1e_rphy(hw, MII_PHYSID1, &phy_id);
if (ret_val)
return ret_val;
phy->id = (u32)(phy_id << 16);
usleep_range(20, 40);
ret_val = e1e_rphy(hw, MII_PHYSID2, &phy_id);
if (ret_val)
return ret_val;
phy->id |= (u32)(phy_id);
phy->revision = (u32)(phy_id & ~PHY_REVISION_MASK);
break;
default:
return -E1000_ERR_PHY;
}
return 0;
}
/**
* e1000_get_hw_semaphore_82571 - Acquire hardware semaphore
* @hw: pointer to the HW structure
*
* Acquire the HW semaphore to access the PHY or NVM
**/
static s32 e1000_get_hw_semaphore_82571(struct e1000_hw *hw)
{
u32 swsm;
s32 sw_timeout = hw->nvm.word_size + 1;
s32 fw_timeout = hw->nvm.word_size + 1;
s32 i = 0;
/* If we have timedout 3 times on trying to acquire
* the inter-port SMBI semaphore, there is old code
* operating on the other port, and it is not
* releasing SMBI. Modify the number of times that
* we try for the semaphore to interwork with this
* older code.
*/
if (hw->dev_spec.e82571.smb_counter > 2)
sw_timeout = 1;
/* Get the SW semaphore */
while (i < sw_timeout) {
swsm = er32(SWSM);
if (!(swsm & E1000_SWSM_SMBI))
break;
usleep_range(50, 100);
i++;
}
if (i == sw_timeout) {
e_dbg("Driver can't access device - SMBI bit is set.\n");
hw->dev_spec.e82571.smb_counter++;
}
/* Get the FW semaphore. */
for (i = 0; i < fw_timeout; i++) {
swsm = er32(SWSM);
ew32(SWSM, swsm | E1000_SWSM_SWESMBI);
/* Semaphore acquired if bit latched */
if (er32(SWSM) & E1000_SWSM_SWESMBI)
break;
usleep_range(50, 100);
}
if (i == fw_timeout) {
/* Release semaphores */
e1000_put_hw_semaphore_82571(hw);
e_dbg("Driver can't access the NVM\n");
return -E1000_ERR_NVM;
}
return 0;
}
/**
* e1000_put_hw_semaphore_82571 - Release hardware semaphore
* @hw: pointer to the HW structure
*
* Release hardware semaphore used to access the PHY or NVM
**/
static void e1000_put_hw_semaphore_82571(struct e1000_hw *hw)
{
u32 swsm;
swsm = er32(SWSM);
swsm &= ~(E1000_SWSM_SMBI | E1000_SWSM_SWESMBI);
ew32(SWSM, swsm);
}
/**
* e1000_get_hw_semaphore_82573 - Acquire hardware semaphore
* @hw: pointer to the HW structure
*
* Acquire the HW semaphore during reset.
*
**/
static s32 e1000_get_hw_semaphore_82573(struct e1000_hw *hw)
{
u32 extcnf_ctrl;
s32 i = 0;
extcnf_ctrl = er32(EXTCNF_CTRL);
do {
extcnf_ctrl |= E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP;
ew32(EXTCNF_CTRL, extcnf_ctrl);
extcnf_ctrl = er32(EXTCNF_CTRL);
if (extcnf_ctrl & E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP)
break;
usleep_range(2000, 4000);
i++;
} while (i < MDIO_OWNERSHIP_TIMEOUT);
if (i == MDIO_OWNERSHIP_TIMEOUT) {
/* Release semaphores */
e1000_put_hw_semaphore_82573(hw);
e_dbg("Driver can't access the PHY\n");
return -E1000_ERR_PHY;
}
return 0;
}
/**
* e1000_put_hw_semaphore_82573 - Release hardware semaphore
* @hw: pointer to the HW structure
*
* Release hardware semaphore used during reset.
*
**/
static void e1000_put_hw_semaphore_82573(struct e1000_hw *hw)
{
u32 extcnf_ctrl;
extcnf_ctrl = er32(EXTCNF_CTRL);
extcnf_ctrl &= ~E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP;
ew32(EXTCNF_CTRL, extcnf_ctrl);
}
static DEFINE_MUTEX(swflag_mutex);
/**
* e1000_get_hw_semaphore_82574 - Acquire hardware semaphore
* @hw: pointer to the HW structure
*
* Acquire the HW semaphore to access the PHY or NVM.
*
**/
static s32 e1000_get_hw_semaphore_82574(struct e1000_hw *hw)
{
s32 ret_val;
mutex_lock(&swflag_mutex);
ret_val = e1000_get_hw_semaphore_82573(hw);
if (ret_val)
mutex_unlock(&swflag_mutex);
return ret_val;
}
/**
* e1000_put_hw_semaphore_82574 - Release hardware semaphore
* @hw: pointer to the HW structure
*
* Release hardware semaphore used to access the PHY or NVM
*
**/
static void e1000_put_hw_semaphore_82574(struct e1000_hw *hw)
{
e1000_put_hw_semaphore_82573(hw);
mutex_unlock(&swflag_mutex);
}
/**
* e1000_set_d0_lplu_state_82574 - Set Low Power Linkup D0 state
* @hw: pointer to the HW structure
* @active: true to enable LPLU, false to disable
*
* Sets the LPLU D0 state according to the active flag.
* LPLU will not be activated unless the
* device autonegotiation advertisement meets standards of
* either 10 or 10/100 or 10/100/1000 at all duplexes.
* This is a function pointer entry point only called by
* PHY setup routines.
**/
static s32 e1000_set_d0_lplu_state_82574(struct e1000_hw *hw, bool active)
{
u32 data = er32(POEMB);
if (active)
data |= E1000_PHY_CTRL_D0A_LPLU;
else
data &= ~E1000_PHY_CTRL_D0A_LPLU;
ew32(POEMB, data);
return 0;
}
/**
* e1000_set_d3_lplu_state_82574 - Sets low power link up state for D3
* @hw: pointer to the HW structure
* @active: boolean used to enable/disable lplu
*
* The low power link up (lplu) state is set to the power management level D3
* when active is true, else clear lplu for D3. LPLU
* is used during Dx states where the power conservation is most important.
* During driver activity, SmartSpeed should be enabled so performance is
* maintained.
**/
static s32 e1000_set_d3_lplu_state_82574(struct e1000_hw *hw, bool active)
{
u32 data = er32(POEMB);
if (!active) {
data &= ~E1000_PHY_CTRL_NOND0A_LPLU;
} else if ((hw->phy.autoneg_advertised == E1000_ALL_SPEED_DUPLEX) ||
(hw->phy.autoneg_advertised == E1000_ALL_NOT_GIG) ||
(hw->phy.autoneg_advertised == E1000_ALL_10_SPEED)) {
data |= E1000_PHY_CTRL_NOND0A_LPLU;
}
ew32(POEMB, data);
return 0;
}
/**
* e1000_acquire_nvm_82571 - Request for access to the EEPROM
* @hw: pointer to the HW structure
*
* To gain access to the EEPROM, first we must obtain a hardware semaphore.
* Then for non-82573 hardware, set the EEPROM access request bit and wait
* for EEPROM access grant bit. If the access grant bit is not set, release
* hardware semaphore.
**/
static s32 e1000_acquire_nvm_82571(struct e1000_hw *hw)
{
s32 ret_val;
ret_val = e1000_get_hw_semaphore_82571(hw);
if (ret_val)
return ret_val;
switch (hw->mac.type) {
case e1000_82573:
break;
default:
ret_val = e1000e_acquire_nvm(hw);
break;
}
if (ret_val)
e1000_put_hw_semaphore_82571(hw);
return ret_val;
}
/**
* e1000_release_nvm_82571 - Release exclusive access to EEPROM
* @hw: pointer to the HW structure
*
* Stop any current commands to the EEPROM and clear the EEPROM request bit.
**/
static void e1000_release_nvm_82571(struct e1000_hw *hw)
{
e1000e_release_nvm(hw);
e1000_put_hw_semaphore_82571(hw);
}
/**
* e1000_write_nvm_82571 - Write to EEPROM using appropriate interface
* @hw: pointer to the HW structure
* @offset: offset within the EEPROM to be written to
* @words: number of words to write
* @data: 16 bit word(s) to be written to the EEPROM
*
* For non-82573 silicon, write data to EEPROM at offset using SPI interface.
*
* If e1000e_update_nvm_checksum is not called after this function, the
* EEPROM will most likely contain an invalid checksum.
**/
static s32 e1000_write_nvm_82571(struct e1000_hw *hw, u16 offset, u16 words,
u16 *data)
{
s32 ret_val;
switch (hw->mac.type) {
case e1000_82573:
case e1000_82574:
case e1000_82583:
ret_val = e1000_write_nvm_eewr_82571(hw, offset, words, data);
break;
case e1000_82571:
case e1000_82572:
ret_val = e1000e_write_nvm_spi(hw, offset, words, data);
break;
default:
ret_val = -E1000_ERR_NVM;
break;
}
return ret_val;
}
/**
* e1000_update_nvm_checksum_82571 - Update EEPROM checksum
* @hw: pointer to the HW structure
*
* Updates the EEPROM checksum by reading/adding each word of the EEPROM
* up to the checksum. Then calculates the EEPROM checksum and writes the
* value to the EEPROM.
**/
static s32 e1000_update_nvm_checksum_82571(struct e1000_hw *hw)
{
u32 eecd;
s32 ret_val;
u16 i;
ret_val = e1000e_update_nvm_checksum_generic(hw);
if (ret_val)
return ret_val;
/* If our nvm is an EEPROM, then we're done
* otherwise, commit the checksum to the flash NVM.
*/
if (hw->nvm.type != e1000_nvm_flash_hw)
return 0;
/* Check for pending operations. */
for (i = 0; i < E1000_FLASH_UPDATES; i++) {
usleep_range(1000, 2000);
if (!(er32(EECD) & E1000_EECD_FLUPD))
break;
}
if (i == E1000_FLASH_UPDATES)
return -E1000_ERR_NVM;
/* Reset the firmware if using STM opcode. */
if ((er32(FLOP) & 0xFF00) == E1000_STM_OPCODE) {
/* The enabling of and the actual reset must be done
* in two write cycles.
*/
ew32(HICR, E1000_HICR_FW_RESET_ENABLE);
e1e_flush();
ew32(HICR, E1000_HICR_FW_RESET);
}
/* Commit the write to flash */
eecd = er32(EECD) | E1000_EECD_FLUPD;
ew32(EECD, eecd);
for (i = 0; i < E1000_FLASH_UPDATES; i++) {
usleep_range(1000, 2000);
if (!(er32(EECD) & E1000_EECD_FLUPD))
break;
}
if (i == E1000_FLASH_UPDATES)
return -E1000_ERR_NVM;
return 0;
}
/**
* e1000_validate_nvm_checksum_82571 - Validate EEPROM checksum
* @hw: pointer to the HW structure
*
* Calculates the EEPROM checksum by reading/adding each word of the EEPROM
* and then verifies that the sum of the EEPROM is equal to 0xBABA.
**/
static s32 e1000_validate_nvm_checksum_82571(struct e1000_hw *hw)
{
if (hw->nvm.type == e1000_nvm_flash_hw)
e1000_fix_nvm_checksum_82571(hw);
return e1000e_validate_nvm_checksum_generic(hw);
}
/**
* e1000_write_nvm_eewr_82571 - Write to EEPROM for 82573 silicon
* @hw: pointer to the HW structure
* @offset: offset within the EEPROM to be written to
* @words: number of words to write
* @data: 16 bit word(s) to be written to the EEPROM
*
* After checking for invalid values, poll the EEPROM to ensure the previous
* command has completed before trying to write the next word. After write
* poll for completion.
*
* If e1000e_update_nvm_checksum is not called after this function, the
* EEPROM will most likely contain an invalid checksum.
**/
static s32 e1000_write_nvm_eewr_82571(struct e1000_hw *hw, u16 offset,
u16 words, u16 *data)
{
struct e1000_nvm_info *nvm = &hw->nvm;
u32 i, eewr = 0;
s32 ret_val = 0;
/* A check for invalid values: offset too large, too many words,
* and not enough words.
*/
if ((offset >= nvm->word_size) || (words > (nvm->word_size - offset)) ||
(words == 0)) {
e_dbg("nvm parameter(s) out of bounds\n");
return -E1000_ERR_NVM;
}
for (i = 0; i < words; i++) {
eewr = ((data[i] << E1000_NVM_RW_REG_DATA) |
((offset + i) << E1000_NVM_RW_ADDR_SHIFT) |
E1000_NVM_RW_REG_START);
ret_val = e1000e_poll_eerd_eewr_done(hw, E1000_NVM_POLL_WRITE);
if (ret_val)
break;
ew32(EEWR, eewr);
ret_val = e1000e_poll_eerd_eewr_done(hw, E1000_NVM_POLL_WRITE);
if (ret_val)
break;
}
return ret_val;
}
/**
* e1000_get_cfg_done_82571 - Poll for configuration done
* @hw: pointer to the HW structure
*
* Reads the management control register for the config done bit to be set.
**/
static s32 e1000_get_cfg_done_82571(struct e1000_hw *hw)
{
s32 timeout = PHY_CFG_TIMEOUT;
while (timeout) {
if (er32(EEMNGCTL) & E1000_NVM_CFG_DONE_PORT_0)
break;
usleep_range(1000, 2000);
timeout--;
}
if (!timeout) {
e_dbg("MNG configuration cycle has not completed.\n");
return -E1000_ERR_RESET;
}
return 0;
}
/**
* e1000_set_d0_lplu_state_82571 - Set Low Power Linkup D0 state
* @hw: pointer to the HW structure
* @active: true to enable LPLU, false to disable
*
* Sets the LPLU D0 state according to the active flag. When activating LPLU
* this function also disables smart speed and vice versa. LPLU will not be
* activated unless the device autonegotiation advertisement meets standards
* of either 10 or 10/100 or 10/100/1000 at all duplexes. This is a function
* pointer entry point only called by PHY setup routines.
**/
static s32 e1000_set_d0_lplu_state_82571(struct e1000_hw *hw, bool active)
{
struct e1000_phy_info *phy = &hw->phy;
s32 ret_val;
u16 data;
ret_val = e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &data);
if (ret_val)
return ret_val;
if (active) {
data |= IGP02E1000_PM_D0_LPLU;
ret_val = e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, data);
if (ret_val)
return ret_val;
/* When LPLU is enabled, we should disable SmartSpeed */
ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG, &data);
if (ret_val)
return ret_val;
data &= ~IGP01E1000_PSCFR_SMART_SPEED;
ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG, data);
if (ret_val)
return ret_val;
} else {
data &= ~IGP02E1000_PM_D0_LPLU;
ret_val = e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, data);
/* LPLU and SmartSpeed are mutually exclusive. LPLU is used
* during Dx states where the power conservation is most
* important. During driver activity we should enable
* SmartSpeed, so performance is maintained.
*/
if (phy->smart_speed == e1000_smart_speed_on) {
ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
&data);
if (ret_val)
return ret_val;
data |= IGP01E1000_PSCFR_SMART_SPEED;
ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
data);
if (ret_val)
return ret_val;
} else if (phy->smart_speed == e1000_smart_speed_off) {
ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
&data);
if (ret_val)
return ret_val;
data &= ~IGP01E1000_PSCFR_SMART_SPEED;
ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
data);
if (ret_val)
return ret_val;
}
}
return 0;
}
/**
* e1000_reset_hw_82571 - Reset hardware
* @hw: pointer to the HW structure
*
* This resets the hardware into a known state.
**/
static s32 e1000_reset_hw_82571(struct e1000_hw *hw)
{
u32 ctrl, ctrl_ext, eecd, tctl;
s32 ret_val;
/* Prevent the PCI-E bus from sticking if there is no TLP connection
* on the last TLP read/write transaction when MAC is reset.
*/
ret_val = e1000e_disable_pcie_master(hw);
if (ret_val)
e_dbg("PCI-E Master disable polling has failed.\n");
e_dbg("Masking off all interrupts\n");
ew32(IMC, 0xffffffff);
ew32(RCTL, 0);
tctl = er32(TCTL);
tctl &= ~E1000_TCTL_EN;
ew32(TCTL, tctl);
e1e_flush();
usleep_range(10000, 20000);
/* Must acquire the MDIO ownership before MAC reset.
* Ownership defaults to firmware after a reset.
*/
switch (hw->mac.type) {
case e1000_82573:
ret_val = e1000_get_hw_semaphore_82573(hw);
break;
case e1000_82574:
case e1000_82583:
ret_val = e1000_get_hw_semaphore_82574(hw);
break;
default:
break;
}
ctrl = er32(CTRL);
e_dbg("Issuing a global reset to MAC\n");
ew32(CTRL, ctrl | E1000_CTRL_RST);
/* Must release MDIO ownership and mutex after MAC reset. */
switch (hw->mac.type) {
case e1000_82573:
/* Release mutex only if the hw semaphore is acquired */
if (!ret_val)
e1000_put_hw_semaphore_82573(hw);
break;
case e1000_82574:
case e1000_82583:
/* Release mutex only if the hw semaphore is acquired */
if (!ret_val)
e1000_put_hw_semaphore_82574(hw);
break;
default:
break;
}
if (hw->nvm.type == e1000_nvm_flash_hw) {
usleep_range(10, 20);
ctrl_ext = er32(CTRL_EXT);
ctrl_ext |= E1000_CTRL_EXT_EE_RST;
ew32(CTRL_EXT, ctrl_ext);
e1e_flush();
}
ret_val = e1000e_get_auto_rd_done(hw);
if (ret_val)
/* We don't want to continue accessing MAC registers. */
return ret_val;
/* Phy configuration from NVM just starts after EECD_AUTO_RD is set.
* Need to wait for Phy configuration completion before accessing
* NVM and Phy.
*/
switch (hw->mac.type) {
case e1000_82571:
case e1000_82572:
/* REQ and GNT bits need to be cleared when using AUTO_RD
* to access the EEPROM.
*/
eecd = er32(EECD);
eecd &= ~(E1000_EECD_REQ | E1000_EECD_GNT);
ew32(EECD, eecd);
break;
case e1000_82573:
case e1000_82574:
case e1000_82583:
msleep(25);
break;
default:
break;
}
/* Clear any pending interrupt events. */
ew32(IMC, 0xffffffff);
er32(ICR);
if (hw->mac.type == e1000_82571) {
/* Install any alternate MAC address into RAR0 */
ret_val = e1000_check_alt_mac_addr_generic(hw);
if (ret_val)
return ret_val;
e1000e_set_laa_state_82571(hw, true);
}
/* Reinitialize the 82571 serdes link state machine */
if (hw->phy.media_type == e1000_media_type_internal_serdes)
hw->mac.serdes_link_state = e1000_serdes_link_down;
return 0;
}
/**
* e1000_init_hw_82571 - Initialize hardware
* @hw: pointer to the HW structure
*
* This inits the hardware readying it for operation.
**/
static s32 e1000_init_hw_82571(struct e1000_hw *hw)
{
struct e1000_mac_info *mac = &hw->mac;
u32 reg_data;
s32 ret_val;
u16 i, rar_count = mac->rar_entry_count;
e1000_initialize_hw_bits_82571(hw);
/* Initialize identification LED */
ret_val = mac->ops.id_led_init(hw);
/* An error is not fatal and we should not stop init due to this */
if (ret_val)
e_dbg("Error initializing identification LED\n");
/* Disabling VLAN filtering */
e_dbg("Initializing the IEEE VLAN\n");
mac->ops.clear_vfta(hw);
/* Setup the receive address.
* If, however, a locally administered address was assigned to the
* 82571, we must reserve a RAR for it to work around an issue where
* resetting one port will reload the MAC on the other port.
*/
if (e1000e_get_laa_state_82571(hw))
rar_count--;
e1000e_init_rx_addrs(hw, rar_count);
/* Zero out the Multicast HASH table */
e_dbg("Zeroing the MTA\n");
for (i = 0; i < mac->mta_reg_count; i++)
E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0);
/* Setup link and flow control */
ret_val = mac->ops.setup_link(hw);
/* Set the transmit descriptor write-back policy */
reg_data = er32(TXDCTL(0));
reg_data = ((reg_data & ~E1000_TXDCTL_WTHRESH) |
E1000_TXDCTL_FULL_TX_DESC_WB | E1000_TXDCTL_COUNT_DESC);
ew32(TXDCTL(0), reg_data);
/* ...for both queues. */
switch (mac->type) {
case e1000_82573:
e1000e_enable_tx_pkt_filtering(hw);
/* fall through */
case e1000_82574:
case e1000_82583:
reg_data = er32(GCR);
reg_data |= E1000_GCR_L1_ACT_WITHOUT_L0S_RX;
ew32(GCR, reg_data);
break;
default:
reg_data = er32(TXDCTL(1));
reg_data = ((reg_data & ~E1000_TXDCTL_WTHRESH) |
E1000_TXDCTL_FULL_TX_DESC_WB |
E1000_TXDCTL_COUNT_DESC);
ew32(TXDCTL(1), reg_data);
break;
}
/* Clear all of the statistics registers (clear on read). It is
* important that we do this after we have tried to establish link
* because the symbol error count will increment wildly if there
* is no link.
*/
e1000_clear_hw_cntrs_82571(hw);
return ret_val;
}
/**
* e1000_initialize_hw_bits_82571 - Initialize hardware-dependent bits
* @hw: pointer to the HW structure
*
* Initializes required hardware-dependent bits needed for normal operation.
**/
static void e1000_initialize_hw_bits_82571(struct e1000_hw *hw)
{
u32 reg;
/* Transmit Descriptor Control 0 */
reg = er32(TXDCTL(0));
reg |= (1 << 22);
ew32(TXDCTL(0), reg);
/* Transmit Descriptor Control 1 */
reg = er32(TXDCTL(1));
reg |= (1 << 22);
ew32(TXDCTL(1), reg);
/* Transmit Arbitration Control 0 */
reg = er32(TARC(0));
reg &= ~(0xF << 27); /* 30:27 */
switch (hw->mac.type) {
case e1000_82571:
case e1000_82572:
reg |= (1 << 23) | (1 << 24) | (1 << 25) | (1 << 26);
break;
case e1000_82574:
case e1000_82583:
reg |= (1 << 26);
break;
default:
break;
}
ew32(TARC(0), reg);
/* Transmit Arbitration Control 1 */
reg = er32(TARC(1));
switch (hw->mac.type) {
case e1000_82571:
case e1000_82572:
reg &= ~((1 << 29) | (1 << 30));
reg |= (1 << 22) | (1 << 24) | (1 << 25) | (1 << 26);
if (er32(TCTL) & E1000_TCTL_MULR)
reg &= ~(1 << 28);
else
reg |= (1 << 28);
ew32(TARC(1), reg);
break;
default:
break;
}
/* Device Control */
switch (hw->mac.type) {
case e1000_82573:
case e1000_82574:
case e1000_82583:
reg = er32(CTRL);
reg &= ~(1 << 29);
ew32(CTRL, reg);
break;
default:
break;
}
/* Extended Device Control */
switch (hw->mac.type) {
case e1000_82573:
case e1000_82574:
case e1000_82583:
reg = er32(CTRL_EXT);
reg &= ~(1 << 23);
reg |= (1 << 22);
ew32(CTRL_EXT, reg);
break;
default:
break;
}
if (hw->mac.type == e1000_82571) {
reg = er32(PBA_ECC);
reg |= E1000_PBA_ECC_CORR_EN;
ew32(PBA_ECC, reg);
}
/* Workaround for hardware errata.
* Ensure that DMA Dynamic Clock gating is disabled on 82571 and 82572
*/
if ((hw->mac.type == e1000_82571) || (hw->mac.type == e1000_82572)) {
reg = er32(CTRL_EXT);
reg &= ~E1000_CTRL_EXT_DMA_DYN_CLK_EN;
ew32(CTRL_EXT, reg);
}
/* Disable IPv6 extension header parsing because some malformed
* IPv6 headers can hang the Rx.
*/
if (hw->mac.type <= e1000_82573) {
reg = er32(RFCTL);
reg |= (E1000_RFCTL_IPV6_EX_DIS | E1000_RFCTL_NEW_IPV6_EXT_DIS);
ew32(RFCTL, reg);
}
/* PCI-Ex Control Registers */
switch (hw->mac.type) {
case e1000_82574:
case e1000_82583:
reg = er32(GCR);
reg |= (1 << 22);
ew32(GCR, reg);
/* Workaround for hardware errata.
* apply workaround for hardware errata documented in errata
* docs Fixes issue where some error prone or unreliable PCIe
* completions are occurring, particularly with ASPM enabled.
* Without fix, issue can cause Tx timeouts.
*/
reg = er32(GCR2);
reg |= 1;
ew32(GCR2, reg);
break;
default:
break;
}
}
/**
* e1000_clear_vfta_82571 - Clear VLAN filter table
* @hw: pointer to the HW structure
*
* Clears the register array which contains the VLAN filter table by
* setting all the values to 0.
**/
static void e1000_clear_vfta_82571(struct e1000_hw *hw)
{
u32 offset;
u32 vfta_value = 0;
u32 vfta_offset = 0;
u32 vfta_bit_in_reg = 0;
switch (hw->mac.type) {
case e1000_82573:
case e1000_82574:
case e1000_82583:
if (hw->mng_cookie.vlan_id != 0) {
/* The VFTA is a 4096b bit-field, each identifying
* a single VLAN ID. The following operations
* determine which 32b entry (i.e. offset) into the
* array we want to set the VLAN ID (i.e. bit) of
* the manageability unit.
*/
vfta_offset = (hw->mng_cookie.vlan_id >>
E1000_VFTA_ENTRY_SHIFT) &
E1000_VFTA_ENTRY_MASK;
vfta_bit_in_reg =
1 << (hw->mng_cookie.vlan_id &
E1000_VFTA_ENTRY_BIT_SHIFT_MASK);
}
break;
default:
break;
}
for (offset = 0; offset < E1000_VLAN_FILTER_TBL_SIZE; offset++) {
/* If the offset we want to clear is the same offset of the
* manageability VLAN ID, then clear all bits except that of
* the manageability unit.
*/
vfta_value = (offset == vfta_offset) ? vfta_bit_in_reg : 0;
E1000_WRITE_REG_ARRAY(hw, E1000_VFTA, offset, vfta_value);
e1e_flush();
}
}
/**
* e1000_check_mng_mode_82574 - Check manageability is enabled
* @hw: pointer to the HW structure
*
* Reads the NVM Initialization Control Word 2 and returns true
* (>0) if any manageability is enabled, else false (0).
**/
static bool e1000_check_mng_mode_82574(struct e1000_hw *hw)
{
u16 data;
e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &data);
return (data & E1000_NVM_INIT_CTRL2_MNGM) != 0;
}
/**
* e1000_led_on_82574 - Turn LED on
* @hw: pointer to the HW structure
*
* Turn LED on.
**/
static s32 e1000_led_on_82574(struct e1000_hw *hw)
{
u32 ctrl;
u32 i;
ctrl = hw->mac.ledctl_mode2;
if (!(E1000_STATUS_LU & er32(STATUS))) {
/* If no link, then turn LED on by setting the invert bit
* for each LED that's "on" (0x0E) in ledctl_mode2.
*/
for (i = 0; i < 4; i++)
if (((hw->mac.ledctl_mode2 >> (i * 8)) & 0xFF) ==
E1000_LEDCTL_MODE_LED_ON)
ctrl |= (E1000_LEDCTL_LED0_IVRT << (i * 8));
}
ew32(LEDCTL, ctrl);
return 0;
}
/**
* e1000_check_phy_82574 - check 82574 phy hung state
* @hw: pointer to the HW structure
*
* Returns whether phy is hung or not
**/
bool e1000_check_phy_82574(struct e1000_hw *hw)
{
u16 status_1kbt = 0;
u16 receive_errors = 0;
s32 ret_val;
/* Read PHY Receive Error counter first, if its is max - all F's then
* read the Base1000T status register If both are max then PHY is hung.
*/
ret_val = e1e_rphy(hw, E1000_RECEIVE_ERROR_COUNTER, &receive_errors);
if (ret_val)
return false;
if (receive_errors == E1000_RECEIVE_ERROR_MAX) {
ret_val = e1e_rphy(hw, E1000_BASE1000T_STATUS, &status_1kbt);
if (ret_val)
return false;
if ((status_1kbt & E1000_IDLE_ERROR_COUNT_MASK) ==
E1000_IDLE_ERROR_COUNT_MASK)
return true;
}
return false;
}
/**
* e1000_setup_link_82571 - Setup flow control and link settings
* @hw: pointer to the HW structure
*
* Determines which flow control settings to use, then configures flow
* control. Calls the appropriate media-specific link configuration
* function. Assuming the adapter has a valid link partner, a valid link
* should be established. Assumes the hardware has previously been reset
* and the transmitter and receiver are not enabled.
**/
static s32 e1000_setup_link_82571(struct e1000_hw *hw)
{
/* 82573 does not have a word in the NVM to determine
* the default flow control setting, so we explicitly
* set it to full.
*/
switch (hw->mac.type) {
case e1000_82573:
case e1000_82574:
case e1000_82583:
if (hw->fc.requested_mode == e1000_fc_default)
hw->fc.requested_mode = e1000_fc_full;
break;
default:
break;
}
return e1000e_setup_link_generic(hw);
}
/**
* e1000_setup_copper_link_82571 - Configure copper link settings
* @hw: pointer to the HW structure
*
* Configures the link for auto-neg or forced speed and duplex. Then we check
* for link, once link is established calls to configure collision distance
* and flow control are called.
**/
static s32 e1000_setup_copper_link_82571(struct e1000_hw *hw)
{
u32 ctrl;
s32 ret_val;
ctrl = er32(CTRL);
ctrl |= E1000_CTRL_SLU;
ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
ew32(CTRL, ctrl);
switch (hw->phy.type) {
case e1000_phy_m88:
case e1000_phy_bm:
ret_val = e1000e_copper_link_setup_m88(hw);
break;
case e1000_phy_igp_2:
ret_val = e1000e_copper_link_setup_igp(hw);
break;
default:
return -E1000_ERR_PHY;
}
if (ret_val)
return ret_val;
return e1000e_setup_copper_link(hw);
}
/**
* e1000_setup_fiber_serdes_link_82571 - Setup link for fiber/serdes
* @hw: pointer to the HW structure
*
* Configures collision distance and flow control for fiber and serdes links.
* Upon successful setup, poll for link.
**/
static s32 e1000_setup_fiber_serdes_link_82571(struct e1000_hw *hw)
{
switch (hw->mac.type) {
case e1000_82571:
case e1000_82572:
/* If SerDes loopback mode is entered, there is no form
* of reset to take the adapter out of that mode. So we
* have to explicitly take the adapter out of loopback
* mode. This prevents drivers from twiddling their thumbs
* if another tool failed to take it out of loopback mode.
*/
ew32(SCTL, E1000_SCTL_DISABLE_SERDES_LOOPBACK);
break;
default:
break;
}
return e1000e_setup_fiber_serdes_link(hw);
}
/**
* e1000_check_for_serdes_link_82571 - Check for link (Serdes)
* @hw: pointer to the HW structure
*
* Reports the link state as up or down.
*
* If autonegotiation is supported by the link partner, the link state is
* determined by the result of autonegotiation. This is the most likely case.
* If autonegotiation is not supported by the link partner, and the link
* has a valid signal, force the link up.
*
* The link state is represented internally here by 4 states:
*
* 1) down
* 2) autoneg_progress
* 3) autoneg_complete (the link successfully autonegotiated)
* 4) forced_up (the link has been forced up, it did not autonegotiate)
*
**/
static s32 e1000_check_for_serdes_link_82571(struct e1000_hw *hw)
{
struct e1000_mac_info *mac = &hw->mac;
u32 rxcw;
u32 ctrl;
u32 status;
u32 txcw;
u32 i;
s32 ret_val = 0;
ctrl = er32(CTRL);
status = er32(STATUS);
er32(RXCW);
/* SYNCH bit and IV bit are sticky */
usleep_range(10, 20);
rxcw = er32(RXCW);
if ((rxcw & E1000_RXCW_SYNCH) && !(rxcw & E1000_RXCW_IV)) {
/* Receiver is synchronized with no invalid bits. */
switch (mac->serdes_link_state) {
case e1000_serdes_link_autoneg_complete:
if (!(status & E1000_STATUS_LU)) {
/* We have lost link, retry autoneg before
* reporting link failure
*/
mac->serdes_link_state =
e1000_serdes_link_autoneg_progress;
mac->serdes_has_link = false;
e_dbg("AN_UP -> AN_PROG\n");
} else {
mac->serdes_has_link = true;
}
break;
case e1000_serdes_link_forced_up:
/* If we are receiving /C/ ordered sets, re-enable
* auto-negotiation in the TXCW register and disable
* forced link in the Device Control register in an
* attempt to auto-negotiate with our link partner.
*/
if (rxcw & E1000_RXCW_C) {
/* Enable autoneg, and unforce link up */
ew32(TXCW, mac->txcw);
ew32(CTRL, (ctrl & ~E1000_CTRL_SLU));
mac->serdes_link_state =
e1000_serdes_link_autoneg_progress;
mac->serdes_has_link = false;
e_dbg("FORCED_UP -> AN_PROG\n");
} else {
mac->serdes_has_link = true;
}
break;
case e1000_serdes_link_autoneg_progress:
if (rxcw & E1000_RXCW_C) {
/* We received /C/ ordered sets, meaning the
* link partner has autonegotiated, and we can
* trust the Link Up (LU) status bit.
*/
if (status & E1000_STATUS_LU) {
mac->serdes_link_state =
e1000_serdes_link_autoneg_complete;
e_dbg("AN_PROG -> AN_UP\n");
mac->serdes_has_link = true;
} else {
/* Autoneg completed, but failed. */
mac->serdes_link_state =
e1000_serdes_link_down;
e_dbg("AN_PROG -> DOWN\n");
}
} else {
/* The link partner did not autoneg.
* Force link up and full duplex, and change
* state to forced.
*/
ew32(TXCW, (mac->txcw & ~E1000_TXCW_ANE));
ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FD);
ew32(CTRL, ctrl);
/* Configure Flow Control after link up. */
ret_val = e1000e_config_fc_after_link_up(hw);
if (ret_val) {
e_dbg("Error config flow control\n");
break;
}
mac->serdes_link_state =
e1000_serdes_link_forced_up;
mac->serdes_has_link = true;
e_dbg("AN_PROG -> FORCED_UP\n");
}
break;
case e1000_serdes_link_down:
default:
/* The link was down but the receiver has now gained
* valid sync, so lets see if we can bring the link
* up.
*/
ew32(TXCW, mac->txcw);
ew32(CTRL, (ctrl & ~E1000_CTRL_SLU));
mac->serdes_link_state =
e1000_serdes_link_autoneg_progress;
mac->serdes_has_link = false;
e_dbg("DOWN -> AN_PROG\n");
break;
}
} else {
if (!(rxcw & E1000_RXCW_SYNCH)) {
mac->serdes_has_link = false;
mac->serdes_link_state = e1000_serdes_link_down;
e_dbg("ANYSTATE -> DOWN\n");
} else {
/* Check several times, if SYNCH bit and CONFIG
* bit both are consistently 1 then simply ignore
* the IV bit and restart Autoneg
*/
for (i = 0; i < AN_RETRY_COUNT; i++) {
usleep_range(10, 20);
rxcw = er32(RXCW);
if ((rxcw & E1000_RXCW_SYNCH) &&
(rxcw & E1000_RXCW_C))
continue;
if (rxcw & E1000_RXCW_IV) {
mac->serdes_has_link = false;
mac->serdes_link_state =
e1000_serdes_link_down;
e_dbg("ANYSTATE -> DOWN\n");
break;
}
}
if (i == AN_RETRY_COUNT) {
txcw = er32(TXCW);
txcw |= E1000_TXCW_ANE;
ew32(TXCW, txcw);
mac->serdes_link_state =
e1000_serdes_link_autoneg_progress;
mac->serdes_has_link = false;
e_dbg("ANYSTATE -> AN_PROG\n");
}
}
}
return ret_val;
}
/**
* e1000_valid_led_default_82571 - Verify a valid default LED config
* @hw: pointer to the HW structure
* @data: pointer to the NVM (EEPROM)
*
* Read the EEPROM for the current default LED configuration. If the
* LED configuration is not valid, set to a valid LED configuration.
**/
static s32 e1000_valid_led_default_82571(struct e1000_hw *hw, u16 *data)
{
s32 ret_val;
ret_val = e1000_read_nvm(hw, NVM_ID_LED_SETTINGS, 1, data);
if (ret_val) {
e_dbg("NVM Read Error\n");
return ret_val;
}
switch (hw->mac.type) {
case e1000_82573:
case e1000_82574:
case e1000_82583:
if (*data == ID_LED_RESERVED_F746)
*data = ID_LED_DEFAULT_82573;
break;
default:
if (*data == ID_LED_RESERVED_0000 ||
*data == ID_LED_RESERVED_FFFF)
*data = ID_LED_DEFAULT;
break;
}
return 0;
}
/**
* e1000e_get_laa_state_82571 - Get locally administered address state
* @hw: pointer to the HW structure
*
* Retrieve and return the current locally administered address state.
**/
bool e1000e_get_laa_state_82571(struct e1000_hw *hw)
{
if (hw->mac.type != e1000_82571)
return false;
return hw->dev_spec.e82571.laa_is_present;
}
/**
* e1000e_set_laa_state_82571 - Set locally administered address state
* @hw: pointer to the HW structure
* @state: enable/disable locally administered address
*
* Enable/Disable the current locally administered address state.
**/
void e1000e_set_laa_state_82571(struct e1000_hw *hw, bool state)
{
if (hw->mac.type != e1000_82571)
return;
hw->dev_spec.e82571.laa_is_present = state;
/* If workaround is activated... */
if (state)
/* Hold a copy of the LAA in RAR[14] This is done so that
* between the time RAR[0] gets clobbered and the time it
* gets fixed, the actual LAA is in one of the RARs and no
* incoming packets directed to this port are dropped.
* Eventually the LAA will be in RAR[0] and RAR[14].
*/
hw->mac.ops.rar_set(hw, hw->mac.addr,
hw->mac.rar_entry_count - 1);
}
/**
* e1000_fix_nvm_checksum_82571 - Fix EEPROM checksum
* @hw: pointer to the HW structure
*
* Verifies that the EEPROM has completed the update. After updating the
* EEPROM, we need to check bit 15 in work 0x23 for the checksum fix. If
* the checksum fix is not implemented, we need to set the bit and update
* the checksum. Otherwise, if bit 15 is set and the checksum is incorrect,
* we need to return bad checksum.
**/
static s32 e1000_fix_nvm_checksum_82571(struct e1000_hw *hw)
{
struct e1000_nvm_info *nvm = &hw->nvm;
s32 ret_val;
u16 data;
if (nvm->type != e1000_nvm_flash_hw)
return 0;
/* Check bit 4 of word 10h. If it is 0, firmware is done updating
* 10h-12h. Checksum may need to be fixed.
*/
ret_val = e1000_read_nvm(hw, 0x10, 1, &data);
if (ret_val)
return ret_val;
if (!(data & 0x10)) {
/* Read 0x23 and check bit 15. This bit is a 1
* when the checksum has already been fixed. If
* the checksum is still wrong and this bit is a
* 1, we need to return bad checksum. Otherwise,
* we need to set this bit to a 1 and update the
* checksum.
*/
ret_val = e1000_read_nvm(hw, 0x23, 1, &data);
if (ret_val)
return ret_val;
if (!(data & 0x8000)) {
data |= 0x8000;
ret_val = e1000_write_nvm(hw, 0x23, 1, &data);
if (ret_val)
return ret_val;
ret_val = e1000e_update_nvm_checksum(hw);
if (ret_val)
return ret_val;
}
}
return 0;
}
/**
* e1000_read_mac_addr_82571 - Read device MAC address
* @hw: pointer to the HW structure
**/
static s32 e1000_read_mac_addr_82571(struct e1000_hw *hw)
{
if (hw->mac.type == e1000_82571) {
s32 ret_val;
/* If there's an alternate MAC address place it in RAR0
* so that it will override the Si installed default perm
* address.
*/
ret_val = e1000_check_alt_mac_addr_generic(hw);
if (ret_val)
return ret_val;
}
return e1000_read_mac_addr_generic(hw);
}
/**
* e1000_power_down_phy_copper_82571 - Remove link during PHY power down
* @hw: pointer to the HW structure
*
* In the case of a PHY power down to save power, or to turn off link during a
* driver unload, or wake on lan is not enabled, remove the link.
**/
static void e1000_power_down_phy_copper_82571(struct e1000_hw *hw)
{
struct e1000_phy_info *phy = &hw->phy;
struct e1000_mac_info *mac = &hw->mac;
if (!phy->ops.check_reset_block)
return;
/* If the management interface is not enabled, then power down */
if (!(mac->ops.check_mng_mode(hw) || phy->ops.check_reset_block(hw)))
e1000_power_down_phy_copper(hw);
}
/**
* e1000_clear_hw_cntrs_82571 - Clear device specific hardware counters
* @hw: pointer to the HW structure
*
* Clears the hardware counters by reading the counter registers.
**/
static void e1000_clear_hw_cntrs_82571(struct e1000_hw *hw)
{
e1000e_clear_hw_cntrs_base(hw);
er32(PRC64);
er32(PRC127);
er32(PRC255);
er32(PRC511);
er32(PRC1023);
er32(PRC1522);
er32(PTC64);
er32(PTC127);
er32(PTC255);
er32(PTC511);
er32(PTC1023);
er32(PTC1522);
er32(ALGNERRC);
er32(RXERRC);
er32(TNCRS);
er32(CEXTERR);
er32(TSCTC);
er32(TSCTFC);
er32(MGTPRC);
er32(MGTPDC);
er32(MGTPTC);
er32(IAC);
er32(ICRXOC);
er32(ICRXPTC);
er32(ICRXATC);
er32(ICTXPTC);
er32(ICTXATC);
er32(ICTXQEC);
er32(ICTXQMTC);
er32(ICRXDMTC);
}
static const struct e1000_mac_operations e82571_mac_ops = {
/* .check_mng_mode: mac type dependent */
/* .check_for_link: media type dependent */
.id_led_init = e1000e_id_led_init_generic,
.cleanup_led = e1000e_cleanup_led_generic,
.clear_hw_cntrs = e1000_clear_hw_cntrs_82571,
.get_bus_info = e1000e_get_bus_info_pcie,
.set_lan_id = e1000_set_lan_id_multi_port_pcie,
/* .get_link_up_info: media type dependent */
/* .led_on: mac type dependent */
.led_off = e1000e_led_off_generic,
.update_mc_addr_list = e1000e_update_mc_addr_list_generic,
.write_vfta = e1000_write_vfta_generic,
.clear_vfta = e1000_clear_vfta_82571,
.reset_hw = e1000_reset_hw_82571,
.init_hw = e1000_init_hw_82571,
.setup_link = e1000_setup_link_82571,
/* .setup_physical_interface: media type dependent */
.setup_led = e1000e_setup_led_generic,
.config_collision_dist = e1000e_config_collision_dist_generic,
.read_mac_addr = e1000_read_mac_addr_82571,
.rar_set = e1000e_rar_set_generic,
.rar_get_count = e1000e_rar_get_count_generic,
};
static const struct e1000_phy_operations e82_phy_ops_igp = {
.acquire = e1000_get_hw_semaphore_82571,
.check_polarity = e1000_check_polarity_igp,
.check_reset_block = e1000e_check_reset_block_generic,
.commit = NULL,
.force_speed_duplex = e1000e_phy_force_speed_duplex_igp,
.get_cfg_done = e1000_get_cfg_done_82571,
.get_cable_length = e1000e_get_cable_length_igp_2,
.get_info = e1000e_get_phy_info_igp,
.read_reg = e1000e_read_phy_reg_igp,
.release = e1000_put_hw_semaphore_82571,
.reset = e1000e_phy_hw_reset_generic,
.set_d0_lplu_state = e1000_set_d0_lplu_state_82571,
.set_d3_lplu_state = e1000e_set_d3_lplu_state,
.write_reg = e1000e_write_phy_reg_igp,
.cfg_on_link_up = NULL,
};
static const struct e1000_phy_operations e82_phy_ops_m88 = {
.acquire = e1000_get_hw_semaphore_82571,
.check_polarity = e1000_check_polarity_m88,
.check_reset_block = e1000e_check_reset_block_generic,
.commit = e1000e_phy_sw_reset,
.force_speed_duplex = e1000e_phy_force_speed_duplex_m88,
.get_cfg_done = e1000e_get_cfg_done_generic,
.get_cable_length = e1000e_get_cable_length_m88,
.get_info = e1000e_get_phy_info_m88,
.read_reg = e1000e_read_phy_reg_m88,
.release = e1000_put_hw_semaphore_82571,
.reset = e1000e_phy_hw_reset_generic,
.set_d0_lplu_state = e1000_set_d0_lplu_state_82571,
.set_d3_lplu_state = e1000e_set_d3_lplu_state,
.write_reg = e1000e_write_phy_reg_m88,
.cfg_on_link_up = NULL,
};
static const struct e1000_phy_operations e82_phy_ops_bm = {
.acquire = e1000_get_hw_semaphore_82571,
.check_polarity = e1000_check_polarity_m88,
.check_reset_block = e1000e_check_reset_block_generic,
.commit = e1000e_phy_sw_reset,
.force_speed_duplex = e1000e_phy_force_speed_duplex_m88,
.get_cfg_done = e1000e_get_cfg_done_generic,
.get_cable_length = e1000e_get_cable_length_m88,
.get_info = e1000e_get_phy_info_m88,
.read_reg = e1000e_read_phy_reg_bm2,
.release = e1000_put_hw_semaphore_82571,
.reset = e1000e_phy_hw_reset_generic,
.set_d0_lplu_state = e1000_set_d0_lplu_state_82571,
.set_d3_lplu_state = e1000e_set_d3_lplu_state,
.write_reg = e1000e_write_phy_reg_bm2,
.cfg_on_link_up = NULL,
};
static const struct e1000_nvm_operations e82571_nvm_ops = {
.acquire = e1000_acquire_nvm_82571,
.read = e1000e_read_nvm_eerd,
.release = e1000_release_nvm_82571,
.reload = e1000e_reload_nvm_generic,
.update = e1000_update_nvm_checksum_82571,
.valid_led_default = e1000_valid_led_default_82571,
.validate = e1000_validate_nvm_checksum_82571,
.write = e1000_write_nvm_82571,
};
const struct e1000_info e1000_82571_info = {
.mac = e1000_82571,
.flags = FLAG_HAS_HW_VLAN_FILTER
| FLAG_HAS_JUMBO_FRAMES
| FLAG_HAS_WOL
| FLAG_APME_IN_CTRL3
| FLAG_HAS_CTRLEXT_ON_LOAD
| FLAG_HAS_SMART_POWER_DOWN
| FLAG_RESET_OVERWRITES_LAA /* errata */
| FLAG_TARC_SPEED_MODE_BIT /* errata */
| FLAG_APME_CHECK_PORT_B,
.flags2 = FLAG2_DISABLE_ASPM_L1 /* errata 13 */
| FLAG2_DMA_BURST,
.pba = 38,
.max_hw_frame_size = DEFAULT_JUMBO,
.get_variants = e1000_get_variants_82571,
.mac_ops = &e82571_mac_ops,
.phy_ops = &e82_phy_ops_igp,
.nvm_ops = &e82571_nvm_ops,
};
const struct e1000_info e1000_82572_info = {
.mac = e1000_82572,
.flags = FLAG_HAS_HW_VLAN_FILTER
| FLAG_HAS_JUMBO_FRAMES
| FLAG_HAS_WOL
| FLAG_APME_IN_CTRL3
| FLAG_HAS_CTRLEXT_ON_LOAD
| FLAG_TARC_SPEED_MODE_BIT, /* errata */
.flags2 = FLAG2_DISABLE_ASPM_L1 /* errata 13 */
| FLAG2_DMA_BURST,
.pba = 38,
.max_hw_frame_size = DEFAULT_JUMBO,
.get_variants = e1000_get_variants_82571,
.mac_ops = &e82571_mac_ops,
.phy_ops = &e82_phy_ops_igp,
.nvm_ops = &e82571_nvm_ops,
};
const struct e1000_info e1000_82573_info = {
.mac = e1000_82573,
.flags = FLAG_HAS_HW_VLAN_FILTER
| FLAG_HAS_WOL
| FLAG_APME_IN_CTRL3
| FLAG_HAS_SMART_POWER_DOWN
| FLAG_HAS_AMT
| FLAG_HAS_SWSM_ON_LOAD,
.flags2 = FLAG2_DISABLE_ASPM_L1
| FLAG2_DISABLE_ASPM_L0S,
.pba = 20,
.max_hw_frame_size = ETH_FRAME_LEN + ETH_FCS_LEN,
.get_variants = e1000_get_variants_82571,
.mac_ops = &e82571_mac_ops,
.phy_ops = &e82_phy_ops_m88,
.nvm_ops = &e82571_nvm_ops,
};
const struct e1000_info e1000_82574_info = {
.mac = e1000_82574,
.flags = FLAG_HAS_HW_VLAN_FILTER
| FLAG_HAS_MSIX
| FLAG_HAS_JUMBO_FRAMES
| FLAG_HAS_WOL
| FLAG_HAS_HW_TIMESTAMP
| FLAG_APME_IN_CTRL3
| FLAG_HAS_SMART_POWER_DOWN
| FLAG_HAS_AMT
| FLAG_HAS_CTRLEXT_ON_LOAD,
.flags2 = FLAG2_CHECK_PHY_HANG
| FLAG2_DISABLE_ASPM_L0S
| FLAG2_DISABLE_ASPM_L1
| FLAG2_NO_DISABLE_RX
| FLAG2_DMA_BURST,
.pba = 32,
.max_hw_frame_size = DEFAULT_JUMBO,
.get_variants = e1000_get_variants_82571,
.mac_ops = &e82571_mac_ops,
.phy_ops = &e82_phy_ops_bm,
.nvm_ops = &e82571_nvm_ops,
};
const struct e1000_info e1000_82583_info = {
.mac = e1000_82583,
.flags = FLAG_HAS_HW_VLAN_FILTER
| FLAG_HAS_WOL
| FLAG_HAS_HW_TIMESTAMP
| FLAG_APME_IN_CTRL3
| FLAG_HAS_SMART_POWER_DOWN
| FLAG_HAS_AMT
| FLAG_HAS_JUMBO_FRAMES
| FLAG_HAS_CTRLEXT_ON_LOAD,
.flags2 = FLAG2_DISABLE_ASPM_L0S
| FLAG2_DISABLE_ASPM_L1
| FLAG2_NO_DISABLE_RX,
.pba = 32,
.max_hw_frame_size = DEFAULT_JUMBO,
.get_variants = e1000_get_variants_82571,
.mac_ops = &e82571_mac_ops,
.phy_ops = &e82_phy_ops_bm,
.nvm_ops = &e82571_nvm_ops,
};
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