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/**************************************************************************
Intel Pro 1000 for ppcboot/das-u-boot
Drivers are port from Intel's Linux driver e1000-4.3.15
and from Etherboot pro 1000 driver by mrakes at vivato dot net
tested on both gig copper and gig fiber boards
***************************************************************************/
/*******************************************************************************
Copyright(c) 1999 - 2002 Intel Corporation. All rights reserved.
* SPDX-License-Identifier: GPL-2.0+
Contact Information:
Linux NICS <linux.nics@intel.com>
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*******************************************************************************/
/*
* Copyright (C) Archway Digital Solutions.
*
* written by Chrsitopher Li <cli at arcyway dot com> or <chrisl at gnuchina dot org>
* 2/9/2002
*
* Copyright (C) Linux Networx.
* Massive upgrade to work with the new intel gigabit NICs.
* <ebiederman at lnxi dot com>
*
* Copyright 2011 Freescale Semiconductor, Inc.
*/
#include "e1000.h"
#define TOUT_LOOP 100000
#define virt_to_bus(devno, v) pci_virt_to_mem(devno, (void *) (v))
#define bus_to_phys(devno, a) pci_mem_to_phys(devno, a)
#define E1000_DEFAULT_PCI_PBA 0x00000030
#define E1000_DEFAULT_PCIE_PBA 0x000a0026
/* NIC specific static variables go here */
/* Intel i210 needs the DMA descriptor rings aligned to 128b */
#define E1000_BUFFER_ALIGN 128
DEFINE_ALIGN_BUFFER(struct e1000_tx_desc, tx_base, 16, E1000_BUFFER_ALIGN);
DEFINE_ALIGN_BUFFER(struct e1000_rx_desc, rx_base, 16, E1000_BUFFER_ALIGN);
DEFINE_ALIGN_BUFFER(unsigned char, packet, 4096, E1000_BUFFER_ALIGN);
static int tx_tail;
static int rx_tail, rx_last;
static struct pci_device_id e1000_supported[] = {
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82542},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82543GC_FIBER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82543GC_COPPER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544EI_COPPER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544EI_FIBER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544GC_COPPER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544GC_LOM},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82540EM},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82545EM_COPPER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82545GM_COPPER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546EB_COPPER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82545EM_FIBER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546EB_FIBER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546GB_COPPER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82540EM_LOM},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82541ER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82541GI_LF},
/* E1000 PCIe card */
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_COPPER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_FIBER },
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_SERDES },
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_QUAD_COPPER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571PT_QUAD_COPPER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_QUAD_FIBER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_QUAD_COPPER_LOWPROFILE},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_SERDES_DUAL},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_SERDES_QUAD},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI_COPPER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI_FIBER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI_SERDES},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82573E},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82573E_IAMT},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82573L},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82574L},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546GB_QUAD_COPPER_KSP3},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_COPPER_DPT},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_SERDES_DPT},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_COPPER_SPT},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_SERDES_SPT},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I210_UNPROGRAMMED},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I211_UNPROGRAMMED},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I210_COPPER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I211_COPPER},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I210_COPPER_FLASHLESS},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I210_SERDES},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I210_SERDES_FLASHLESS},
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I210_1000BASEKX},
{}
};
/* Function forward declarations */
static int e1000_setup_link(struct eth_device *nic);
static int e1000_setup_fiber_link(struct eth_device *nic);
static int e1000_setup_copper_link(struct eth_device *nic);
static int e1000_phy_setup_autoneg(struct e1000_hw *hw);
static void e1000_config_collision_dist(struct e1000_hw *hw);
static int e1000_config_mac_to_phy(struct e1000_hw *hw);
static int e1000_config_fc_after_link_up(struct e1000_hw *hw);
static int e1000_check_for_link(struct eth_device *nic);
static int e1000_wait_autoneg(struct e1000_hw *hw);
static int e1000_get_speed_and_duplex(struct e1000_hw *hw, uint16_t * speed,
uint16_t * duplex);
static int e1000_read_phy_reg(struct e1000_hw *hw, uint32_t reg_addr,
uint16_t * phy_data);
static int e1000_write_phy_reg(struct e1000_hw *hw, uint32_t reg_addr,
uint16_t phy_data);
static int32_t e1000_phy_hw_reset(struct e1000_hw *hw);
static int e1000_phy_reset(struct e1000_hw *hw);
static int e1000_detect_gig_phy(struct e1000_hw *hw);
static void e1000_set_media_type(struct e1000_hw *hw);
static int32_t e1000_swfw_sync_acquire(struct e1000_hw *hw, uint16_t mask);
static int32_t e1000_check_phy_reset_block(struct e1000_hw *hw);
#ifndef CONFIG_E1000_NO_NVM
static void e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw);
static int32_t e1000_read_eeprom(struct e1000_hw *hw, uint16_t offset,
uint16_t words,
uint16_t *data);
/******************************************************************************
* Raises the EEPROM's clock input.
*
* hw - Struct containing variables accessed by shared code
* eecd - EECD's current value
*****************************************************************************/
void e1000_raise_ee_clk(struct e1000_hw *hw, uint32_t * eecd)
{
/* Raise the clock input to the EEPROM (by setting the SK bit), and then
* wait 50 microseconds.
*/
*eecd = *eecd | E1000_EECD_SK;
E1000_WRITE_REG(hw, EECD, *eecd);
E1000_WRITE_FLUSH(hw);
udelay(50);
}
/******************************************************************************
* Lowers the EEPROM's clock input.
*
* hw - Struct containing variables accessed by shared code
* eecd - EECD's current value
*****************************************************************************/
void e1000_lower_ee_clk(struct e1000_hw *hw, uint32_t * eecd)
{
/* Lower the clock input to the EEPROM (by clearing the SK bit), and then
* wait 50 microseconds.
*/
*eecd = *eecd & ~E1000_EECD_SK;
E1000_WRITE_REG(hw, EECD, *eecd);
E1000_WRITE_FLUSH(hw);
udelay(50);
}
/******************************************************************************
* Shift data bits out to the EEPROM.
*
* hw - Struct containing variables accessed by shared code
* data - data to send to the EEPROM
* count - number of bits to shift out
*****************************************************************************/
static void
e1000_shift_out_ee_bits(struct e1000_hw *hw, uint16_t data, uint16_t count)
{
uint32_t eecd;
uint32_t mask;
/* We need to shift "count" bits out to the EEPROM. So, value in the
* "data" parameter will be shifted out to the EEPROM one bit at a time.
* In order to do this, "data" must be broken down into bits.
*/
mask = 0x01 << (count - 1);
eecd = E1000_READ_REG(hw, EECD);
eecd &= ~(E1000_EECD_DO | E1000_EECD_DI);
do {
/* A "1" is shifted out to the EEPROM by setting bit "DI" to a "1",
* and then raising and then lowering the clock (the SK bit controls
* the clock input to the EEPROM). A "0" is shifted out to the EEPROM
* by setting "DI" to "0" and then raising and then lowering the clock.
*/
eecd &= ~E1000_EECD_DI;
if (data & mask)
eecd |= E1000_EECD_DI;
E1000_WRITE_REG(hw, EECD, eecd);
E1000_WRITE_FLUSH(hw);
udelay(50);
e1000_raise_ee_clk(hw, &eecd);
e1000_lower_ee_clk(hw, &eecd);
mask = mask >> 1;
} while (mask);
/* We leave the "DI" bit set to "0" when we leave this routine. */
eecd &= ~E1000_EECD_DI;
E1000_WRITE_REG(hw, EECD, eecd);
}
/******************************************************************************
* Shift data bits in from the EEPROM
*
* hw - Struct containing variables accessed by shared code
*****************************************************************************/
static uint16_t
e1000_shift_in_ee_bits(struct e1000_hw *hw, uint16_t count)
{
uint32_t eecd;
uint32_t i;
uint16_t data;
/* In order to read a register from the EEPROM, we need to shift 'count'
* bits in from the EEPROM. Bits are "shifted in" by raising the clock
* input to the EEPROM (setting the SK bit), and then reading the
* value of the "DO" bit. During this "shifting in" process the
* "DI" bit should always be clear.
*/
eecd = E1000_READ_REG(hw, EECD);
eecd &= ~(E1000_EECD_DO | E1000_EECD_DI);
data = 0;
for (i = 0; i < count; i++) {
data = data << 1;
e1000_raise_ee_clk(hw, &eecd);
eecd = E1000_READ_REG(hw, EECD);
eecd &= ~(E1000_EECD_DI);
if (eecd & E1000_EECD_DO)
data |= 1;
e1000_lower_ee_clk(hw, &eecd);
}
return data;
}
/******************************************************************************
* Returns EEPROM to a "standby" state
*
* hw - Struct containing variables accessed by shared code
*****************************************************************************/
void e1000_standby_eeprom(struct e1000_hw *hw)
{
struct e1000_eeprom_info *eeprom = &hw->eeprom;
uint32_t eecd;
eecd = E1000_READ_REG(hw, EECD);
if (eeprom->type == e1000_eeprom_microwire) {
eecd &= ~(E1000_EECD_CS | E1000_EECD_SK);
E1000_WRITE_REG(hw, EECD, eecd);
E1000_WRITE_FLUSH(hw);
udelay(eeprom->delay_usec);
/* Clock high */
eecd |= E1000_EECD_SK;
E1000_WRITE_REG(hw, EECD, eecd);
E1000_WRITE_FLUSH(hw);
udelay(eeprom->delay_usec);
/* Select EEPROM */
eecd |= E1000_EECD_CS;
E1000_WRITE_REG(hw, EECD, eecd);
E1000_WRITE_FLUSH(hw);
udelay(eeprom->delay_usec);
/* Clock low */
eecd &= ~E1000_EECD_SK;
E1000_WRITE_REG(hw, EECD, eecd);
E1000_WRITE_FLUSH(hw);
udelay(eeprom->delay_usec);
} else if (eeprom->type == e1000_eeprom_spi) {
/* Toggle CS to flush commands */
eecd |= E1000_EECD_CS;
E1000_WRITE_REG(hw, EECD, eecd);
E1000_WRITE_FLUSH(hw);
udelay(eeprom->delay_usec);
eecd &= ~E1000_EECD_CS;
E1000_WRITE_REG(hw, EECD, eecd);
E1000_WRITE_FLUSH(hw);
udelay(eeprom->delay_usec);
}
}
/***************************************************************************
* Description: Determines if the onboard NVM is FLASH or EEPROM.
*
* hw - Struct containing variables accessed by shared code
****************************************************************************/
static bool e1000_is_onboard_nvm_eeprom(struct e1000_hw *hw)
{
uint32_t eecd = 0;
DEBUGFUNC();
if (hw->mac_type == e1000_ich8lan)
return false;
if (hw->mac_type == e1000_82573 || hw->mac_type == e1000_82574) {
eecd = E1000_READ_REG(hw, EECD);
/* Isolate bits 15 & 16 */
eecd = ((eecd >> 15) & 0x03);
/* If both bits are set, device is Flash type */
if (eecd == 0x03)
return false;
}
return true;
}
/******************************************************************************
* Prepares EEPROM for access
*
* hw - Struct containing variables accessed by shared code
*
* Lowers EEPROM clock. Clears input pin. Sets the chip select pin. This
* function should be called before issuing a command to the EEPROM.
*****************************************************************************/
int32_t e1000_acquire_eeprom(struct e1000_hw *hw)
{
struct e1000_eeprom_info *eeprom = &hw->eeprom;
uint32_t eecd, i = 0;
DEBUGFUNC();
if (e1000_swfw_sync_acquire(hw, E1000_SWFW_EEP_SM))
return -E1000_ERR_SWFW_SYNC;
eecd = E1000_READ_REG(hw, EECD);
if (hw->mac_type != e1000_82573 && hw->mac_type != e1000_82574) {
/* Request EEPROM Access */
if (hw->mac_type > e1000_82544) {
eecd |= E1000_EECD_REQ;
E1000_WRITE_REG(hw, EECD, eecd);
eecd = E1000_READ_REG(hw, EECD);
while ((!(eecd & E1000_EECD_GNT)) &&
(i < E1000_EEPROM_GRANT_ATTEMPTS)) {
i++;
udelay(5);
eecd = E1000_READ_REG(hw, EECD);
}
if (!(eecd & E1000_EECD_GNT)) {
eecd &= ~E1000_EECD_REQ;
E1000_WRITE_REG(hw, EECD, eecd);
DEBUGOUT("Could not acquire EEPROM grant\n");
return -E1000_ERR_EEPROM;
}
}
}
/* Setup EEPROM for Read/Write */
if (eeprom->type == e1000_eeprom_microwire) {
/* Clear SK and DI */
eecd &= ~(E1000_EECD_DI | E1000_EECD_SK);
E1000_WRITE_REG(hw, EECD, eecd);
/* Set CS */
eecd |= E1000_EECD_CS;
E1000_WRITE_REG(hw, EECD, eecd);
} else if (eeprom->type == e1000_eeprom_spi) {
/* Clear SK and CS */
eecd &= ~(E1000_EECD_CS | E1000_EECD_SK);
E1000_WRITE_REG(hw, EECD, eecd);
udelay(1);
}
return E1000_SUCCESS;
}
/******************************************************************************
* Sets up eeprom variables in the hw struct. Must be called after mac_type
* is configured. Additionally, if this is ICH8, the flash controller GbE
* registers must be mapped, or this will crash.
*
* hw - Struct containing variables accessed by shared code
*****************************************************************************/
static int32_t e1000_init_eeprom_params(struct e1000_hw *hw)
{
struct e1000_eeprom_info *eeprom = &hw->eeprom;
uint32_t eecd;
int32_t ret_val = E1000_SUCCESS;
uint16_t eeprom_size;
if (hw->mac_type == e1000_igb)
eecd = E1000_READ_REG(hw, I210_EECD);
else
eecd = E1000_READ_REG(hw, EECD);
DEBUGFUNC();
switch (hw->mac_type) {
case e1000_82542_rev2_0:
case e1000_82542_rev2_1:
case e1000_82543:
case e1000_82544:
eeprom->type = e1000_eeprom_microwire;
eeprom->word_size = 64;
eeprom->opcode_bits = 3;
eeprom->address_bits = 6;
eeprom->delay_usec = 50;
eeprom->use_eerd = false;
eeprom->use_eewr = false;
break;
case e1000_82540:
case e1000_82545:
case e1000_82545_rev_3:
case e1000_82546:
case e1000_82546_rev_3:
eeprom->type = e1000_eeprom_microwire;
eeprom->opcode_bits = 3;
eeprom->delay_usec = 50;
if (eecd & E1000_EECD_SIZE) {
eeprom->word_size = 256;
eeprom->address_bits = 8;
} else {
eeprom->word_size = 64;
eeprom->address_bits = 6;
}
eeprom->use_eerd = false;
eeprom->use_eewr = false;
break;
case e1000_82541:
case e1000_82541_rev_2:
case e1000_82547:
case e1000_82547_rev_2:
if (eecd & E1000_EECD_TYPE) {
eeprom->type = e1000_eeprom_spi;
eeprom->opcode_bits = 8;
eeprom->delay_usec = 1;
if (eecd & E1000_EECD_ADDR_BITS) {
eeprom->page_size = 32;
eeprom->address_bits = 16;
} else {
eeprom->page_size = 8;
eeprom->address_bits = 8;
}
} else {
eeprom->type = e1000_eeprom_microwire;
eeprom->opcode_bits = 3;
eeprom->delay_usec = 50;
if (eecd & E1000_EECD_ADDR_BITS) {
eeprom->word_size = 256;
eeprom->address_bits = 8;
} else {
eeprom->word_size = 64;
eeprom->address_bits = 6;
}
}
eeprom->use_eerd = false;
eeprom->use_eewr = false;
break;
case e1000_82571:
case e1000_82572:
eeprom->type = e1000_eeprom_spi;
eeprom->opcode_bits = 8;
eeprom->delay_usec = 1;
if (eecd & E1000_EECD_ADDR_BITS) {
eeprom->page_size = 32;
eeprom->address_bits = 16;
} else {
eeprom->page_size = 8;
eeprom->address_bits = 8;
}
eeprom->use_eerd = false;
eeprom->use_eewr = false;
break;
case e1000_82573:
case e1000_82574:
eeprom->type = e1000_eeprom_spi;
eeprom->opcode_bits = 8;
eeprom->delay_usec = 1;
if (eecd & E1000_EECD_ADDR_BITS) {
eeprom->page_size = 32;
eeprom->address_bits = 16;
} else {
eeprom->page_size = 8;
eeprom->address_bits = 8;
}
if (e1000_is_onboard_nvm_eeprom(hw) == false) {
eeprom->use_eerd = true;
eeprom->use_eewr = true;
eeprom->type = e1000_eeprom_flash;
eeprom->word_size = 2048;
/* Ensure that the Autonomous FLASH update bit is cleared due to
* Flash update issue on parts which use a FLASH for NVM. */
eecd &= ~E1000_EECD_AUPDEN;
E1000_WRITE_REG(hw, EECD, eecd);
}
break;
case e1000_80003es2lan:
eeprom->type = e1000_eeprom_spi;
eeprom->opcode_bits = 8;
eeprom->delay_usec = 1;
if (eecd & E1000_EECD_ADDR_BITS) {
eeprom->page_size = 32;
eeprom->address_bits = 16;
} else {
eeprom->page_size = 8;
eeprom->address_bits = 8;
}
eeprom->use_eerd = true;
eeprom->use_eewr = false;
break;
case e1000_igb:
/* i210 has 4k of iNVM mapped as EEPROM */
eeprom->type = e1000_eeprom_invm;
eeprom->opcode_bits = 8;
eeprom->delay_usec = 1;
eeprom->page_size = 32;
eeprom->address_bits = 16;
eeprom->use_eerd = true;
eeprom->use_eewr = false;
break;
/* ich8lan does not support currently. if needed, please
* add corresponding code and functions.
*/
#if 0
case e1000_ich8lan:
{
int32_t i = 0;
eeprom->type = e1000_eeprom_ich8;
eeprom->use_eerd = false;
eeprom->use_eewr = false;
eeprom->word_size = E1000_SHADOW_RAM_WORDS;
uint32_t flash_size = E1000_READ_ICH_FLASH_REG(hw,
ICH_FLASH_GFPREG);
/* Zero the shadow RAM structure. But don't load it from NVM
* so as to save time for driver init */
if (hw->eeprom_shadow_ram != NULL) {
for (i = 0; i < E1000_SHADOW_RAM_WORDS; i++) {
hw->eeprom_shadow_ram[i].modified = false;
hw->eeprom_shadow_ram[i].eeprom_word = 0xFFFF;
}
}
hw->flash_base_addr = (flash_size & ICH_GFPREG_BASE_MASK) *
ICH_FLASH_SECTOR_SIZE;
hw->flash_bank_size = ((flash_size >> 16)
& ICH_GFPREG_BASE_MASK) + 1;
hw->flash_bank_size -= (flash_size & ICH_GFPREG_BASE_MASK);
hw->flash_bank_size *= ICH_FLASH_SECTOR_SIZE;
hw->flash_bank_size /= 2 * sizeof(uint16_t);
break;
}
#endif
default:
break;
}
if (eeprom->type == e1000_eeprom_spi ||
eeprom->type == e1000_eeprom_invm) {
/* eeprom_size will be an enum [0..8] that maps
* to eeprom sizes 128B to
* 32KB (incremented by powers of 2).
*/
if (hw->mac_type <= e1000_82547_rev_2) {
/* Set to default value for initial eeprom read. */
eeprom->word_size = 64;
ret_val = e1000_read_eeprom(hw, EEPROM_CFG, 1,
&eeprom_size);
if (ret_val)
return ret_val;
eeprom_size = (eeprom_size & EEPROM_SIZE_MASK)
>> EEPROM_SIZE_SHIFT;
/* 256B eeprom size was not supported in earlier
* hardware, so we bump eeprom_size up one to
* ensure that "1" (which maps to 256B) is never
* the result used in the shifting logic below. */
if (eeprom_size)
eeprom_size++;
} else {
eeprom_size = (uint16_t)((eecd &
E1000_EECD_SIZE_EX_MASK) >>
E1000_EECD_SIZE_EX_SHIFT);
}
eeprom->word_size = 1 << (eeprom_size + EEPROM_WORD_SIZE_SHIFT);
}
return ret_val;
}
/******************************************************************************
* Polls the status bit (bit 1) of the EERD to determine when the read is done.
*
* hw - Struct containing variables accessed by shared code
*****************************************************************************/
static int32_t
e1000_poll_eerd_eewr_done(struct e1000_hw *hw, int eerd)
{
uint32_t attempts = 100000;
uint32_t i, reg = 0;
int32_t done = E1000_ERR_EEPROM;
for (i = 0; i < attempts; i++) {
if (eerd == E1000_EEPROM_POLL_READ) {
if (hw->mac_type == e1000_igb)
reg = E1000_READ_REG(hw, I210_EERD);
else
reg = E1000_READ_REG(hw, EERD);
} else {
if (hw->mac_type == e1000_igb)
reg = E1000_READ_REG(hw, I210_EEWR);
else
reg = E1000_READ_REG(hw, EEWR);
}
if (reg & E1000_EEPROM_RW_REG_DONE) {
done = E1000_SUCCESS;
break;
}
udelay(5);
}
return done;
}
/******************************************************************************
* Reads a 16 bit word from the EEPROM using the EERD register.
*
* hw - Struct containing variables accessed by shared code
* offset - offset of word in the EEPROM to read
* data - word read from the EEPROM
* words - number of words to read
*****************************************************************************/
static int32_t
e1000_read_eeprom_eerd(struct e1000_hw *hw,
uint16_t offset,
uint16_t words,
uint16_t *data)
{
uint32_t i, eerd = 0;
int32_t error = 0;
for (i = 0; i < words; i++) {
eerd = ((offset+i) << E1000_EEPROM_RW_ADDR_SHIFT) +
E1000_EEPROM_RW_REG_START;
if (hw->mac_type == e1000_igb)
E1000_WRITE_REG(hw, I210_EERD, eerd);
else
E1000_WRITE_REG(hw, EERD, eerd);
error = e1000_poll_eerd_eewr_done(hw, E1000_EEPROM_POLL_READ);
if (error)
break;
if (hw->mac_type == e1000_igb) {
data[i] = (E1000_READ_REG(hw, I210_EERD) >>
E1000_EEPROM_RW_REG_DATA);
} else {
data[i] = (E1000_READ_REG(hw, EERD) >>
E1000_EEPROM_RW_REG_DATA);
}
}
return error;
}
void e1000_release_eeprom(struct e1000_hw *hw)
{
uint32_t eecd;
DEBUGFUNC();
eecd = E1000_READ_REG(hw, EECD);
if (hw->eeprom.type == e1000_eeprom_spi) {
eecd |= E1000_EECD_CS; /* Pull CS high */
eecd &= ~E1000_EECD_SK; /* Lower SCK */
E1000_WRITE_REG(hw, EECD, eecd);
udelay(hw->eeprom.delay_usec);
} else if (hw->eeprom.type == e1000_eeprom_microwire) {
/* cleanup eeprom */
/* CS on Microwire is active-high */
eecd &= ~(E1000_EECD_CS | E1000_EECD_DI);
E1000_WRITE_REG(hw, EECD, eecd);
/* Rising edge of clock */
eecd |= E1000_EECD_SK;
E1000_WRITE_REG(hw, EECD, eecd);
E1000_WRITE_FLUSH(hw);
udelay(hw->eeprom.delay_usec);
/* Falling edge of clock */
eecd &= ~E1000_EECD_SK;
E1000_WRITE_REG(hw, EECD, eecd);
E1000_WRITE_FLUSH(hw);
udelay(hw->eeprom.delay_usec);
}
/* Stop requesting EEPROM access */
if (hw->mac_type > e1000_82544) {
eecd &= ~E1000_EECD_REQ;
E1000_WRITE_REG(hw, EECD, eecd);
}
}
/******************************************************************************
* Reads a 16 bit word from the EEPROM.
*
* hw - Struct containing variables accessed by shared code
*****************************************************************************/
static int32_t
e1000_spi_eeprom_ready(struct e1000_hw *hw)
{
uint16_t retry_count = 0;
uint8_t spi_stat_reg;
DEBUGFUNC();
/* Read "Status Register" repeatedly until the LSB is cleared. The
* EEPROM will signal that the command has been completed by clearing
* bit 0 of the internal status register. If it's not cleared within
* 5 milliseconds, then error out.
*/
retry_count = 0;
do {
e1000_shift_out_ee_bits(hw, EEPROM_RDSR_OPCODE_SPI,
hw->eeprom.opcode_bits);
spi_stat_reg = (uint8_t)e1000_shift_in_ee_bits(hw, 8);
if (!(spi_stat_reg & EEPROM_STATUS_RDY_SPI))
break;
udelay(5);
retry_count += 5;
e1000_standby_eeprom(hw);
} while (retry_count < EEPROM_MAX_RETRY_SPI);
/* ATMEL SPI write time could vary from 0-20mSec on 3.3V devices (and
* only 0-5mSec on 5V devices)
*/
if (retry_count >= EEPROM_MAX_RETRY_SPI) {
DEBUGOUT("SPI EEPROM Status error\n");
return -E1000_ERR_EEPROM;
}
return E1000_SUCCESS;
}
/******************************************************************************
* Reads a 16 bit word from the EEPROM.
*
* hw - Struct containing variables accessed by shared code
* offset - offset of word in the EEPROM to read
* data - word read from the EEPROM
*****************************************************************************/
static int32_t
e1000_read_eeprom(struct e1000_hw *hw, uint16_t offset,
uint16_t words, uint16_t *data)
{
struct e1000_eeprom_info *eeprom = &hw->eeprom;
uint32_t i = 0;
DEBUGFUNC();
/* If eeprom is not yet detected, do so now */
if (eeprom->word_size == 0)
e1000_init_eeprom_params(hw);
/* A check for invalid values: offset too large, too many words,
* and not enough words.
*/
if ((offset >= eeprom->word_size) ||
(words > eeprom->word_size - offset) ||
(words == 0)) {
DEBUGOUT("\"words\" parameter out of bounds."
"Words = %d, size = %d\n", offset, eeprom->word_size);
return -E1000_ERR_EEPROM;
}
/* EEPROM's that don't use EERD to read require us to bit-bang the SPI
* directly. In this case, we need to acquire the EEPROM so that
* FW or other port software does not interrupt.
*/
if (e1000_is_onboard_nvm_eeprom(hw) == true &&
hw->eeprom.use_eerd == false) {
/* Prepare the EEPROM for bit-bang reading */
if (e1000_acquire_eeprom(hw) != E1000_SUCCESS)
return -E1000_ERR_EEPROM;
}
/* Eerd register EEPROM access requires no eeprom aquire/release */
if (eeprom->use_eerd == true)
return e1000_read_eeprom_eerd(hw, offset, words, data);
/* ich8lan does not support currently. if needed, please
* add corresponding code and functions.
*/
#if 0
/* ICH EEPROM access is done via the ICH flash controller */
if (eeprom->type == e1000_eeprom_ich8)
return e1000_read_eeprom_ich8(hw, offset, words, data);
#endif
/* Set up the SPI or Microwire EEPROM for bit-bang reading. We have
* acquired the EEPROM at this point, so any returns should relase it */
if (eeprom->type == e1000_eeprom_spi) {
uint16_t word_in;
uint8_t read_opcode = EEPROM_READ_OPCODE_SPI;
if (e1000_spi_eeprom_ready(hw)) {
e1000_release_eeprom(hw);
return -E1000_ERR_EEPROM;
}
e1000_standby_eeprom(hw);
/* Some SPI eeproms use the 8th address bit embedded in
* the opcode */
if ((eeprom->address_bits == 8) && (offset >= 128))
read_opcode |= EEPROM_A8_OPCODE_SPI;
/* Send the READ command (opcode + addr) */
e1000_shift_out_ee_bits(hw, read_opcode, eeprom->opcode_bits);
e1000_shift_out_ee_bits(hw, (uint16_t)(offset*2),
eeprom->address_bits);
/* Read the data. The address of the eeprom internally
* increments with each byte (spi) being read, saving on the
* overhead of eeprom setup and tear-down. The address
* counter will roll over if reading beyond the size of
* the eeprom, thus allowing the entire memory to be read
* starting from any offset. */
for (i = 0; i < words; i++) {
word_in = e1000_shift_in_ee_bits(hw, 16);
data[i] = (word_in >> 8) | (word_in << 8);
}
} else if (eeprom->type == e1000_eeprom_microwire) {
for (i = 0; i < words; i++) {
/* Send the READ command (opcode + addr) */
e1000_shift_out_ee_bits(hw,
EEPROM_READ_OPCODE_MICROWIRE,
eeprom->opcode_bits);
e1000_shift_out_ee_bits(hw, (uint16_t)(offset + i),
eeprom->address_bits);
/* Read the data. For microwire, each word requires
* the overhead of eeprom setup and tear-down. */
data[i] = e1000_shift_in_ee_bits(hw, 16);
e1000_standby_eeprom(hw);
}
}
/* End this read operation */
e1000_release_eeprom(hw);
return E1000_SUCCESS;
}
/******************************************************************************
* Verifies that the EEPROM has a valid checksum
*
* hw - Struct containing variables accessed by shared code
*
* Reads the first 64 16 bit words of the EEPROM and sums the values read.
* If the the sum of the 64 16 bit words is 0xBABA, the EEPROM's checksum is
* valid.
*****************************************************************************/
static int e1000_validate_eeprom_checksum(struct e1000_hw *hw)
{
uint16_t i, checksum, checksum_reg, *buf;
DEBUGFUNC();
/* Allocate a temporary buffer */
buf = malloc(sizeof(buf[0]) * (EEPROM_CHECKSUM_REG + 1));
if (!buf) {
E1000_ERR(hw->nic, "Unable to allocate EEPROM buffer!\n");
return -E1000_ERR_EEPROM;
}
/* Read the EEPROM */
if (e1000_read_eeprom(hw, 0, EEPROM_CHECKSUM_REG + 1, buf) < 0) {
E1000_ERR(hw->nic, "Unable to read EEPROM!\n");
return -E1000_ERR_EEPROM;
}
/* Compute the checksum */
checksum = 0;
for (i = 0; i < EEPROM_CHECKSUM_REG; i++)
checksum += buf[i];
checksum = ((uint16_t)EEPROM_SUM) - checksum;
checksum_reg = buf[i];
/* Verify it! */
if (checksum == checksum_reg)
return 0;
/* Hrm, verification failed, print an error */
E1000_ERR(hw->nic, "EEPROM checksum is incorrect!\n");
E1000_ERR(hw->nic, " ...register was 0x%04hx, calculated 0x%04hx\n",
checksum_reg, checksum);
return -E1000_ERR_EEPROM;
}
#endif /* CONFIG_E1000_NO_NVM */
/*****************************************************************************
* Set PHY to class A mode
* Assumes the following operations will follow to enable the new class mode.
* 1. Do a PHY soft reset
* 2. Restart auto-negotiation or force link.
*
* hw - Struct containing variables accessed by shared code
****************************************************************************/
static int32_t
e1000_set_phy_mode(struct e1000_hw *hw)
{
#ifndef CONFIG_E1000_NO_NVM
int32_t ret_val;
uint16_t eeprom_data;
DEBUGFUNC();
if ((hw->mac_type == e1000_82545_rev_3) &&
(hw->media_type == e1000_media_type_copper)) {
ret_val = e1000_read_eeprom(hw, EEPROM_PHY_CLASS_WORD,
1, &eeprom_data);
if (ret_val)
return ret_val;
if ((eeprom_data != EEPROM_RESERVED_WORD) &&
(eeprom_data & EEPROM_PHY_CLASS_A)) {
ret_val = e1000_write_phy_reg(hw,
M88E1000_PHY_PAGE_SELECT, 0x000B);
if (ret_val)
return ret_val;
ret_val = e1000_write_phy_reg(hw,
M88E1000_PHY_GEN_CONTROL, 0x8104);
if (ret_val)
return ret_val;
hw->phy_reset_disable = false;
}
}
#endif
return E1000_SUCCESS;
}
#ifndef CONFIG_E1000_NO_NVM
/***************************************************************************
*
* Obtaining software semaphore bit (SMBI) before resetting PHY.
*
* hw: Struct containing variables accessed by shared code
*
* returns: - E1000_ERR_RESET if fail to obtain semaphore.
* E1000_SUCCESS at any other case.
*
***************************************************************************/
static int32_t
e1000_get_software_semaphore(struct e1000_hw *hw)
{
int32_t timeout = hw->eeprom.word_size + 1;
uint32_t swsm;
DEBUGFUNC();
swsm = E1000_READ_REG(hw, SWSM);
swsm &= ~E1000_SWSM_SMBI;
E1000_WRITE_REG(hw, SWSM, swsm);
if (hw->mac_type != e1000_80003es2lan)
return E1000_SUCCESS;
while (timeout) {
swsm = E1000_READ_REG(hw, SWSM);
/* If SMBI bit cleared, it is now set and we hold
* the semaphore */
if (!(swsm & E1000_SWSM_SMBI))
break;
mdelay(1);
timeout--;
}
if (!timeout) {
DEBUGOUT("Driver can't access device - SMBI bit is set.\n");
return -E1000_ERR_RESET;
}
return E1000_SUCCESS;
}
#endif
/***************************************************************************
* This function clears HW semaphore bits.
*
* hw: Struct containing variables accessed by shared code
*
* returns: - None.
*
***************************************************************************/
static void
e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw)
{
#ifndef CONFIG_E1000_NO_NVM
uint32_t swsm;
DEBUGFUNC();
if (!hw->eeprom_semaphore_present)
return;
swsm = E1000_READ_REG(hw, SWSM);
if (hw->mac_type == e1000_80003es2lan) {
/* Release both semaphores. */
swsm &= ~(E1000_SWSM_SMBI | E1000_SWSM_SWESMBI);
} else
swsm &= ~(E1000_SWSM_SWESMBI);
E1000_WRITE_REG(hw, SWSM, swsm);
#endif
}
/***************************************************************************
*
* Using the combination of SMBI and SWESMBI semaphore bits when resetting
* adapter or Eeprom access.
*
* hw: Struct containing variables accessed by shared code
*
* returns: - E1000_ERR_EEPROM if fail to access EEPROM.
* E1000_SUCCESS at any other case.
*
***************************************************************************/
static int32_t
e1000_get_hw_eeprom_semaphore(struct e1000_hw *hw)
{
#ifndef CONFIG_E1000_NO_NVM
int32_t timeout;
uint32_t swsm;
DEBUGFUNC();
if (!hw->eeprom_semaphore_present)
return E1000_SUCCESS;
if (hw->mac_type == e1000_80003es2lan) {
/* Get the SW semaphore. */
if (e1000_get_software_semaphore(hw) != E1000_SUCCESS)
return -E1000_ERR_EEPROM;
}
/* Get the FW semaphore. */
timeout = hw->eeprom.word_size + 1;
while (timeout) {
swsm = E1000_READ_REG(hw, SWSM);
swsm |= E1000_SWSM_SWESMBI;
E1000_WRITE_REG(hw, SWSM, swsm);
/* if we managed to set the bit we got the semaphore. */
swsm = E1000_READ_REG(hw, SWSM);
if (swsm & E1000_SWSM_SWESMBI)
break;
udelay(50);
timeout--;
}
if (!timeout) {
/* Release semaphores */
e1000_put_hw_eeprom_semaphore(hw);
DEBUGOUT("Driver can't access the Eeprom - "
"SWESMBI bit is set.\n");
return -E1000_ERR_EEPROM;
}
#endif
return E1000_SUCCESS;
}
static int32_t
e1000_swfw_sync_acquire(struct e1000_hw *hw, uint16_t mask)
{
uint32_t swfw_sync = 0;
uint32_t swmask = mask;
uint32_t fwmask = mask << 16;
int32_t timeout = 200;
DEBUGFUNC();
while (timeout) {
if (e1000_get_hw_eeprom_semaphore(hw))
return -E1000_ERR_SWFW_SYNC;
if (hw->mac_type == e1000_igb)
swfw_sync = E1000_READ_REG(hw, I210_SW_FW_SYNC);
else
swfw_sync = E1000_READ_REG(hw, SW_FW_SYNC);
if (!(swfw_sync & (fwmask | swmask)))
break;
/* firmware currently using resource (fwmask) */
/* or other software thread currently using resource (swmask) */
e1000_put_hw_eeprom_semaphore(hw);
mdelay(5);
timeout--;
}
if (!timeout) {
DEBUGOUT("Driver can't access resource, SW_FW_SYNC timeout.\n");
return -E1000_ERR_SWFW_SYNC;
}
swfw_sync |= swmask;
E1000_WRITE_REG(hw, SW_FW_SYNC, swfw_sync);
e1000_put_hw_eeprom_semaphore(hw);
return E1000_SUCCESS;
}
static bool e1000_is_second_port(struct e1000_hw *hw)
{
switch (hw->mac_type) {
case e1000_80003es2lan:
case e1000_82546:
case e1000_82571:
if (E1000_READ_REG(hw, STATUS) & E1000_STATUS_FUNC_1)
return true;
/* Fallthrough */
default:
return false;
}
}
#ifndef CONFIG_E1000_NO_NVM
/******************************************************************************
* Reads the adapter's MAC address from the EEPROM and inverts the LSB for the
* second function of dual function devices
*
* nic - Struct containing variables accessed by shared code
*****************************************************************************/
static int
e1000_read_mac_addr(struct eth_device *nic)
{
struct e1000_hw *hw = nic->priv;
uint16_t offset;
uint16_t eeprom_data;
uint32_t reg_data = 0;
int i;
DEBUGFUNC();
for (i = 0; i < NODE_ADDRESS_SIZE; i += 2) {
offset = i >> 1;
if (hw->mac_type == e1000_igb) {
/* i210 preloads MAC address into RAL/RAH registers */
if (offset == 0)
reg_data = E1000_READ_REG_ARRAY(hw, RA, 0);
else if (offset == 1)
reg_data >>= 16;
else if (offset == 2)
reg_data = E1000_READ_REG_ARRAY(hw, RA, 1);
eeprom_data = reg_data & 0xffff;
} else if (e1000_read_eeprom(hw, offset, 1, &eeprom_data) < 0) {
DEBUGOUT("EEPROM Read Error\n");
return -E1000_ERR_EEPROM;
}
nic->enetaddr[i] = eeprom_data & 0xff;
nic->enetaddr[i + 1] = (eeprom_data >> 8) & 0xff;
}
/* Invert the last bit if this is the second device */
if (e1000_is_second_port(hw))
nic->enetaddr[5] ^= 1;
#ifdef CONFIG_E1000_FALLBACK_MAC
if (!is_valid_ether_addr(nic->enetaddr)) {
unsigned char fb_mac[NODE_ADDRESS_SIZE] = CONFIG_E1000_FALLBACK_MAC;
memcpy (nic->enetaddr, fb_mac, NODE_ADDRESS_SIZE);
}
#endif
return 0;
}
#endif
/******************************************************************************
* Initializes receive address filters.
*
* hw - Struct containing variables accessed by shared code
*
* Places the MAC address in receive address register 0 and clears the rest
* of the receive addresss registers. Clears the multicast table. Assumes
* the receiver is in reset when the routine is called.
*****************************************************************************/
static void
e1000_init_rx_addrs(struct eth_device *nic)
{
struct e1000_hw *hw = nic->priv;
uint32_t i;
uint32_t addr_low;
uint32_t addr_high;
DEBUGFUNC();
/* Setup the receive address. */
DEBUGOUT("Programming MAC Address into RAR[0]\n");
addr_low = (nic->enetaddr[0] |
(nic->enetaddr[1] << 8) |
(nic->enetaddr[2] << 16) | (nic->enetaddr[3] << 24));
addr_high = (nic->enetaddr[4] | (nic->enetaddr[5] << 8) | E1000_RAH_AV);
E1000_WRITE_REG_ARRAY(hw, RA, 0, addr_low);
E1000_WRITE_REG_ARRAY(hw, RA, 1, addr_high);
/* Zero out the other 15 receive addresses. */
DEBUGOUT("Clearing RAR[1-15]\n");
for (i = 1; i < E1000_RAR_ENTRIES; i++) {
E1000_WRITE_REG_ARRAY(hw, RA, (i << 1), 0);
E1000_WRITE_REG_ARRAY(hw, RA, ((i << 1) + 1), 0);
}
}
/******************************************************************************
* Clears the VLAN filer table
*
* hw - Struct containing variables accessed by shared code
*****************************************************************************/
static void
e1000_clear_vfta(struct e1000_hw *hw)
{
uint32_t offset;
for (offset = 0; offset < E1000_VLAN_FILTER_TBL_SIZE; offset++)
E1000_WRITE_REG_ARRAY(hw, VFTA, offset, 0);
}
/******************************************************************************
* Set the mac type member in the hw struct.
*
* hw - Struct containing variables accessed by shared code
*****************************************************************************/
int32_t
e1000_set_mac_type(struct e1000_hw *hw)
{
DEBUGFUNC();
switch (hw->device_id) {
case E1000_DEV_ID_82542:
switch (hw->revision_id) {
case E1000_82542_2_0_REV_ID:
hw->mac_type = e1000_82542_rev2_0;
break;
case E1000_82542_2_1_REV_ID:
hw->mac_type = e1000_82542_rev2_1;
break;
default:
/* Invalid 82542 revision ID */
return -E1000_ERR_MAC_TYPE;
}
break;
case E1000_DEV_ID_82543GC_FIBER:
case E1000_DEV_ID_82543GC_COPPER:
hw->mac_type = e1000_82543;
break;
case E1000_DEV_ID_82544EI_COPPER:
case E1000_DEV_ID_82544EI_FIBER:
case E1000_DEV_ID_82544GC_COPPER:
case E1000_DEV_ID_82544GC_LOM:
hw->mac_type = e1000_82544;
break;
case E1000_DEV_ID_82540EM:
case E1000_DEV_ID_82540EM_LOM:
case E1000_DEV_ID_82540EP:
case E1000_DEV_ID_82540EP_LOM:
case E1000_DEV_ID_82540EP_LP:
hw->mac_type = e1000_82540;
break;
case E1000_DEV_ID_82545EM_COPPER:
case E1000_DEV_ID_82545EM_FIBER:
hw->mac_type = e1000_82545;
break;
case E1000_DEV_ID_82545GM_COPPER:
case E1000_DEV_ID_82545GM_FIBER:
case E1000_DEV_ID_82545GM_SERDES:
hw->mac_type = e1000_82545_rev_3;
break;
case E1000_DEV_ID_82546EB_COPPER:
case E1000_DEV_ID_82546EB_FIBER:
case E1000_DEV_ID_82546EB_QUAD_COPPER:
hw->mac_type = e1000_82546;
break;
case E1000_DEV_ID_82546GB_COPPER:
case E1000_DEV_ID_82546GB_FIBER:
case E1000_DEV_ID_82546GB_SERDES:
case E1000_DEV_ID_82546GB_PCIE:
case E1000_DEV_ID_82546GB_QUAD_COPPER:
case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
hw->mac_type = e1000_82546_rev_3;
break;
case E1000_DEV_ID_82541EI:
case E1000_DEV_ID_82541EI_MOBILE:
case E1000_DEV_ID_82541ER_LOM:
hw->mac_type = e1000_82541;
break;
case E1000_DEV_ID_82541ER:
case E1000_DEV_ID_82541GI:
case E1000_DEV_ID_82541GI_LF:
case E1000_DEV_ID_82541GI_MOBILE:
hw->mac_type = e1000_82541_rev_2;
break;
case E1000_DEV_ID_82547EI:
case E1000_DEV_ID_82547EI_MOBILE:
hw->mac_type = e1000_82547;
break;
case E1000_DEV_ID_82547GI:
hw->mac_type = e1000_82547_rev_2;
break;
case E1000_DEV_ID_82571EB_COPPER:
case E1000_DEV_ID_82571EB_FIBER:
case E1000_DEV_ID_82571EB_SERDES:
case E1000_DEV_ID_82571EB_SERDES_DUAL:
case E1000_DEV_ID_82571EB_SERDES_QUAD:
case E1000_DEV_ID_82571EB_QUAD_COPPER:
case E1000_DEV_ID_82571PT_QUAD_COPPER:
case E1000_DEV_ID_82571EB_QUAD_FIBER:
case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE:
hw->mac_type = e1000_82571;
break;
case E1000_DEV_ID_82572EI_COPPER:
case E1000_DEV_ID_82572EI_FIBER:
case E1000_DEV_ID_82572EI_SERDES:
case E1000_DEV_ID_82572EI:
hw->mac_type = e1000_82572;
break;
case E1000_DEV_ID_82573E:
case E1000_DEV_ID_82573E_IAMT:
case E1000_DEV_ID_82573L:
hw->mac_type = e1000_82573;
break;
case E1000_DEV_ID_82574L:
hw->mac_type = e1000_82574;
break;
case E1000_DEV_ID_80003ES2LAN_COPPER_SPT:
case E1000_DEV_ID_80003ES2LAN_SERDES_SPT:
case E1000_DEV_ID_80003ES2LAN_COPPER_DPT:
case E1000_DEV_ID_80003ES2LAN_SERDES_DPT:
hw->mac_type = e1000_80003es2lan;
break;
case E1000_DEV_ID_ICH8_IGP_M_AMT:
case E1000_DEV_ID_ICH8_IGP_AMT:
case E1000_DEV_ID_ICH8_IGP_C:
case E1000_DEV_ID_ICH8_IFE:
case E1000_DEV_ID_ICH8_IFE_GT:
case E1000_DEV_ID_ICH8_IFE_G:
case E1000_DEV_ID_ICH8_IGP_M:
hw->mac_type = e1000_ich8lan;
break;
case PCI_DEVICE_ID_INTEL_I210_UNPROGRAMMED:
case PCI_DEVICE_ID_INTEL_I211_UNPROGRAMMED:
case PCI_DEVICE_ID_INTEL_I210_COPPER:
case PCI_DEVICE_ID_INTEL_I211_COPPER:
case PCI_DEVICE_ID_INTEL_I210_COPPER_FLASHLESS:
case PCI_DEVICE_ID_INTEL_I210_SERDES:
case PCI_DEVICE_ID_INTEL_I210_SERDES_FLASHLESS:
case PCI_DEVICE_ID_INTEL_I210_1000BASEKX:
hw->mac_type = e1000_igb;
break;
default:
/* Should never have loaded on this device */
return -E1000_ERR_MAC_TYPE;
}
return E1000_SUCCESS;
}
/******************************************************************************
* Reset the transmit and receive units; mask and clear all interrupts.
*
* hw - Struct containing variables accessed by shared code
*****************************************************************************/
void
e1000_reset_hw(struct e1000_hw *hw)
{
uint32_t ctrl;
uint32_t ctrl_ext;
uint32_t manc;
uint32_t pba = 0;
uint32_t reg;
DEBUGFUNC();
/* get the correct pba value for both PCI and PCIe*/
if (hw->mac_type < e1000_82571)
pba = E1000_DEFAULT_PCI_PBA;
else
pba = E1000_DEFAULT_PCIE_PBA;
/* For 82542 (rev 2.0), disable MWI before issuing a device reset */
if (hw->mac_type == e1000_82542_rev2_0) {
DEBUGOUT("Disabling MWI on 82542 rev 2.0\n");
pci_write_config_word(hw->pdev, PCI_COMMAND,
hw->pci_cmd_word & ~PCI_COMMAND_INVALIDATE);
}
/* Clear interrupt mask to stop board from generating interrupts */
DEBUGOUT("Masking off all interrupts\n");
if (hw->mac_type == e1000_igb)
E1000_WRITE_REG(hw, I210_IAM, 0);
E1000_WRITE_REG(hw, IMC, 0xffffffff);
/* Disable the Transmit and Receive units. Then delay to allow
* any pending transactions to complete before we hit the MAC with
* the global reset.
*/
E1000_WRITE_REG(hw, RCTL, 0);
E1000_WRITE_REG(hw, TCTL, E1000_TCTL_PSP);
E1000_WRITE_FLUSH(hw);
/* The tbi_compatibility_on Flag must be cleared when Rctl is cleared. */
hw->tbi_compatibility_on = false;
/* Delay to allow any outstanding PCI transactions to complete before
* resetting the device
*/
mdelay(10);
/* Issue a global reset to the MAC. This will reset the chip's
* transmit, receive, DMA, and link units. It will not effect
* the current PCI configuration. The global reset bit is self-
* clearing, and should clear within a microsecond.
*/
DEBUGOUT("Issuing a global reset to MAC\n");
ctrl = E1000_READ_REG(hw, CTRL);
E1000_WRITE_REG(hw, CTRL, (ctrl | E1000_CTRL_RST));
/* Force a reload from the EEPROM if necessary */
if (hw->mac_type == e1000_igb) {
mdelay(20);
reg = E1000_READ_REG(hw, STATUS);
if (reg & E1000_STATUS_PF_RST_DONE)
DEBUGOUT("PF OK\n");
reg = E1000_READ_REG(hw, I210_EECD);
if (reg & E1000_EECD_AUTO_RD)
DEBUGOUT("EEC OK\n");
} else if (hw->mac_type < e1000_82540) {
/* Wait for reset to complete */
udelay(10);
ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
ctrl_ext |= E1000_CTRL_EXT_EE_RST;
E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
E1000_WRITE_FLUSH(hw);
/* Wait for EEPROM reload */
mdelay(2);
} else {
/* Wait for EEPROM reload (it happens automatically) */
mdelay(4);
/* Dissable HW ARPs on ASF enabled adapters */
manc = E1000_READ_REG(hw, MANC);
manc &= ~(E1000_MANC_ARP_EN);
E1000_WRITE_REG(hw, MANC, manc);
}
/* Clear interrupt mask to stop board from generating interrupts */
DEBUGOUT("Masking off all interrupts\n");
if (hw->mac_type == e1000_igb)
E1000_WRITE_REG(hw, I210_IAM, 0);
E1000_WRITE_REG(hw, IMC, 0xffffffff);
/* Clear any pending interrupt events. */
E1000_READ_REG(hw, ICR);
/* If MWI was previously enabled, reenable it. */
if (hw->mac_type == e1000_82542_rev2_0) {
pci_write_config_word(hw->pdev, PCI_COMMAND, hw->pci_cmd_word);
}
if (hw->mac_type != e1000_igb)
E1000_WRITE_REG(hw, PBA, pba);
}
/******************************************************************************
*
* Initialize a number of hardware-dependent bits
*
* hw: Struct containing variables accessed by shared code
*
* This function contains hardware limitation workarounds for PCI-E adapters
*
*****************************************************************************/
static void
e1000_initialize_hardware_bits(struct e1000_hw *hw)
{
if ((hw->mac_type >= e1000_82571) &&
(!hw->initialize_hw_bits_disable)) {
/* Settings common to all PCI-express silicon */
uint32_t reg_ctrl, reg_ctrl_ext;
uint32_t reg_tarc0, reg_tarc1;
uint32_t reg_tctl;
uint32_t reg_txdctl, reg_txdctl1;
/* link autonegotiation/sync workarounds */
reg_tarc0 = E1000_READ_REG(hw, TARC0);
reg_tarc0 &= ~((1 << 30)|(1 << 29)|(1 << 28)|(1 << 27));
/* Enable not-done TX descriptor counting */
reg_txdctl = E1000_READ_REG(hw, TXDCTL);
reg_txdctl |= E1000_TXDCTL_COUNT_DESC;
E1000_WRITE_REG(hw, TXDCTL, reg_txdctl);
reg_txdctl1 = E1000_READ_REG(hw, TXDCTL1);
reg_txdctl1 |= E1000_TXDCTL_COUNT_DESC;
E1000_WRITE_REG(hw, TXDCTL1, reg_txdctl1);
/* IGB is cool */
if (hw->mac_type == e1000_igb)
return;
switch (hw->mac_type) {
case e1000_82571:
case e1000_82572:
/* Clear PHY TX compatible mode bits */
reg_tarc1 = E1000_READ_REG(hw, TARC1);
reg_tarc1 &= ~((1 << 30)|(1 << 29));
/* link autonegotiation/sync workarounds */
reg_tarc0 |= ((1 << 26)|(1 << 25)|(1 << 24)|(1 << 23));
/* TX ring control fixes */
reg_tarc1 |= ((1 << 26)|(1 << 25)|(1 << 24));
/* Multiple read bit is reversed polarity */
reg_tctl = E1000_READ_REG(hw, TCTL);
if (reg_tctl & E1000_TCTL_MULR)
reg_tarc1 &= ~(1 << 28);
else
reg_tarc1 |= (1 << 28);
E1000_WRITE_REG(hw, TARC1, reg_tarc1);
break;
case e1000_82573:
case e1000_82574:
reg_ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
reg_ctrl_ext &= ~(1 << 23);
reg_ctrl_ext |= (1 << 22);
/* TX byte count fix */
reg_ctrl = E1000_READ_REG(hw, CTRL);
reg_ctrl &= ~(1 << 29);
E1000_WRITE_REG(hw, CTRL_EXT, reg_ctrl_ext);
E1000_WRITE_REG(hw, CTRL, reg_ctrl);
break;
case e1000_80003es2lan:
/* improve small packet performace for fiber/serdes */
if ((hw->media_type == e1000_media_type_fiber)
|| (hw->media_type ==
e1000_media_type_internal_serdes)) {
reg_tarc0 &= ~(1 << 20);
}
/* Multiple read bit is reversed polarity */
reg_tctl = E1000_READ_REG(hw, TCTL);
reg_tarc1 = E1000_READ_REG(hw, TARC1);
if (reg_tctl & E1000_TCTL_MULR)
reg_tarc1 &= ~(1 << 28);
else
reg_tarc1 |= (1 << 28);
E1000_WRITE_REG(hw, TARC1, reg_tarc1);
break;
case e1000_ich8lan:
/* Reduce concurrent DMA requests to 3 from 4 */
if ((hw->revision_id < 3) ||
((hw->device_id != E1000_DEV_ID_ICH8_IGP_M_AMT) &&
(hw->device_id != E1000_DEV_ID_ICH8_IGP_M)))
reg_tarc0 |= ((1 << 29)|(1 << 28));
reg_ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
reg_ctrl_ext |= (1 << 22);
E1000_WRITE_REG(hw, CTRL_EXT, reg_ctrl_ext);
/* workaround TX hang with TSO=on */
reg_tarc0 |= ((1 << 27)|(1 << 26)|(1 << 24)|(1 << 23));
/* Multiple read bit is reversed polarity */
reg_tctl = E1000_READ_REG(hw, TCTL);
reg_tarc1 = E1000_READ_REG(hw, TARC1);
if (reg_tctl & E1000_TCTL_MULR)
reg_tarc1 &= ~(1 << 28);
else
reg_tarc1 |= (1 << 28);
/* workaround TX hang with TSO=on */
reg_tarc1 |= ((1 << 30)|(1 << 26)|(1 << 24));
E1000_WRITE_REG(hw, TARC1, reg_tarc1);
break;
default:
break;
}
E1000_WRITE_REG(hw, TARC0, reg_tarc0);
}
}
/******************************************************************************
* Performs basic configuration of the adapter.
*
* hw - Struct containing variables accessed by shared code
*
* Assumes that the controller has previously been reset and is in a
* post-reset uninitialized state. Initializes the receive address registers,
* multicast table, and VLAN filter table. Calls routines to setup link
* configuration and flow control settings. Clears all on-chip counters. Leaves
* the transmit and receive units disabled and uninitialized.
*****************************************************************************/
static int
e1000_init_hw(struct eth_device *nic)
{
struct e1000_hw *hw = nic->priv;
uint32_t ctrl;
uint32_t i;
int32_t ret_val;
uint16_t pcix_cmd_word;
uint16_t pcix_stat_hi_word;
uint16_t cmd_mmrbc;
uint16_t stat_mmrbc;
uint32_t mta_size;
uint32_t reg_data;
uint32_t ctrl_ext;
DEBUGFUNC();
/* force full DMA clock frequency for 10/100 on ICH8 A0-B0 */
if ((hw->mac_type == e1000_ich8lan) &&
((hw->revision_id < 3) ||
((hw->device_id != E1000_DEV_ID_ICH8_IGP_M_AMT) &&
(hw->device_id != E1000_DEV_ID_ICH8_IGP_M)))) {
reg_data = E1000_READ_REG(hw, STATUS);
reg_data &= ~0x80000000;
E1000_WRITE_REG(hw, STATUS, reg_data);
}
/* Do not need initialize Identification LED */
/* Set the media type and TBI compatibility */
e1000_set_media_type(hw);
/* Must be called after e1000_set_media_type
* because media_type is used */
e1000_initialize_hardware_bits(hw);
/* Disabling VLAN filtering. */
DEBUGOUT("Initializing the IEEE VLAN\n");
/* VET hardcoded to standard value and VFTA removed in ICH8 LAN */
if (hw->mac_type != e1000_ich8lan) {
if (hw->mac_type < e1000_82545_rev_3)
E1000_WRITE_REG(hw, VET, 0);
e1000_clear_vfta(hw);
}
/* For 82542 (rev 2.0), disable MWI and put the receiver into reset */
if (hw->mac_type == e1000_82542_rev2_0) {
DEBUGOUT("Disabling MWI on 82542 rev 2.0\n");
pci_write_config_word(hw->pdev, PCI_COMMAND,
hw->
pci_cmd_word & ~PCI_COMMAND_INVALIDATE);
E1000_WRITE_REG(hw, RCTL, E1000_RCTL_RST);
E1000_WRITE_FLUSH(hw);
mdelay(5);
}
/* Setup the receive address. This involves initializing all of the Receive
* Address Registers (RARs 0 - 15).
*/
e1000_init_rx_addrs(nic);
/* For 82542 (rev 2.0), take the receiver out of reset and enable MWI */
if (hw->mac_type == e1000_82542_rev2_0) {
E1000_WRITE_REG(hw, RCTL, 0);
E1000_WRITE_FLUSH(hw);
mdelay(1);
pci_write_config_word(hw->pdev, PCI_COMMAND, hw->pci_cmd_word);
}
/* Zero out the Multicast HASH table */
DEBUGOUT("Zeroing the MTA\n");
mta_size = E1000_MC_TBL_SIZE;
if (hw->mac_type == e1000_ich8lan)
mta_size = E1000_MC_TBL_SIZE_ICH8LAN;
for (i = 0; i < mta_size; i++) {
E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
/* use write flush to prevent Memory Write Block (MWB) from
* occuring when accessing our register space */
E1000_WRITE_FLUSH(hw);
}
#if 0
/* Set the PCI priority bit correctly in the CTRL register. This
* determines if the adapter gives priority to receives, or if it
* gives equal priority to transmits and receives. Valid only on
* 82542 and 82543 silicon.
*/
if (hw->dma_fairness && hw->mac_type <= e1000_82543) {
ctrl = E1000_READ_REG(hw, CTRL);
E1000_WRITE_REG(hw, CTRL, ctrl | E1000_CTRL_PRIOR);
}
#endif
switch (hw->mac_type) {
case e1000_82545_rev_3:
case e1000_82546_rev_3:
case e1000_igb:
break;
default:
/* Workaround for PCI-X problem when BIOS sets MMRBC incorrectly. */
if (hw->bus_type == e1000_bus_type_pcix) {
pci_read_config_word(hw->pdev, PCIX_COMMAND_REGISTER,
&pcix_cmd_word);
pci_read_config_word(hw->pdev, PCIX_STATUS_REGISTER_HI,
&pcix_stat_hi_word);
cmd_mmrbc =
(pcix_cmd_word & PCIX_COMMAND_MMRBC_MASK) >>
PCIX_COMMAND_MMRBC_SHIFT;
stat_mmrbc =
(pcix_stat_hi_word & PCIX_STATUS_HI_MMRBC_MASK) >>
PCIX_STATUS_HI_MMRBC_SHIFT;
if (stat_mmrbc == PCIX_STATUS_HI_MMRBC_4K)
stat_mmrbc = PCIX_STATUS_HI_MMRBC_2K;
if (cmd_mmrbc > stat_mmrbc) {
pcix_cmd_word &= ~PCIX_COMMAND_MMRBC_MASK;
pcix_cmd_word |= stat_mmrbc << PCIX_COMMAND_MMRBC_SHIFT;
pci_write_config_word(hw->pdev, PCIX_COMMAND_REGISTER,
pcix_cmd_word);
}
}
break;
}
/* More time needed for PHY to initialize */
if (hw->mac_type == e1000_ich8lan)
mdelay(15);
if (hw->mac_type == e1000_igb)
mdelay(15);
/* Call a subroutine to configure the link and setup flow control. */
ret_val = e1000_setup_link(nic);
/* Set the transmit descriptor write-back policy */
if (hw->mac_type > e1000_82544) {
ctrl = E1000_READ_REG(hw, TXDCTL);
ctrl =
(ctrl & ~E1000_TXDCTL_WTHRESH) |
E1000_TXDCTL_FULL_TX_DESC_WB;
E1000_WRITE_REG(hw, TXDCTL, ctrl);
}
/* Set the receive descriptor write back policy */
if (hw->mac_type >= e1000_82571) {
ctrl = E1000_READ_REG(hw, RXDCTL);
ctrl =
(ctrl & ~E1000_RXDCTL_WTHRESH) |
E1000_RXDCTL_FULL_RX_DESC_WB;
E1000_WRITE_REG(hw, RXDCTL, ctrl);
}
switch (hw->mac_type) {
default:
break;
case e1000_80003es2lan:
/* Enable retransmit on late collisions */
reg_data = E1000_READ_REG(hw, TCTL);
reg_data |= E1000_TCTL_RTLC;
E1000_WRITE_REG(hw, TCTL, reg_data);
/* Configure Gigabit Carry Extend Padding */
reg_data = E1000_READ_REG(hw, TCTL_EXT);
reg_data &= ~E1000_TCTL_EXT_GCEX_MASK;
reg_data |= DEFAULT_80003ES2LAN_TCTL_EXT_GCEX;
E1000_WRITE_REG(hw, TCTL_EXT, reg_data);
/* Configure Transmit Inter-Packet Gap */
reg_data = E1000_READ_REG(hw, TIPG);
reg_data &= ~E1000_TIPG_IPGT_MASK;
reg_data |= DEFAULT_80003ES2LAN_TIPG_IPGT_1000;
E1000_WRITE_REG(hw, TIPG, reg_data);
reg_data = E1000_READ_REG_ARRAY(hw, FFLT, 0x0001);
reg_data &= ~0x00100000;
E1000_WRITE_REG_ARRAY(hw, FFLT, 0x0001, reg_data);
/* Fall through */
case e1000_82571:
case e1000_82572:
case e1000_ich8lan:
ctrl = E1000_READ_REG(hw, TXDCTL1);
ctrl = (ctrl & ~E1000_TXDCTL_WTHRESH)
| E1000_TXDCTL_FULL_TX_DESC_WB;
E1000_WRITE_REG(hw, TXDCTL1, ctrl);
break;
case e1000_82573:
case e1000_82574:
reg_data = E1000_READ_REG(hw, GCR);
reg_data |= E1000_GCR_L1_ACT_WITHOUT_L0S_RX;
E1000_WRITE_REG(hw, GCR, reg_data);
case e1000_igb:
break;
}
#if 0
/* 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(hw);
/* ICH8 No-snoop bits are opposite polarity.
* Set to snoop by default after reset. */
if (hw->mac_type == e1000_ich8lan)
e1000_set_pci_ex_no_snoop(hw, PCI_EX_82566_SNOOP_ALL);
#endif
if (hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER ||
hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3) {
ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
/* Relaxed ordering must be disabled to avoid a parity
* error crash in a PCI slot. */
ctrl_ext |= E1000_CTRL_EXT_RO_DIS;
E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
}
return ret_val;
}
/******************************************************************************
* Configures flow control and link settings.
*
* hw - Struct containing variables accessed by shared code
*
* Determines which flow control settings to use. Calls the apropriate media-
* specific link configuration function. Configures the flow control settings.
* 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 int
e1000_setup_link(struct eth_device *nic)
{
struct e1000_hw *hw = nic->priv;
int32_t ret_val;
#ifndef CONFIG_E1000_NO_NVM
uint32_t ctrl_ext;
uint16_t eeprom_data;
#endif
DEBUGFUNC();
/* In the case of the phy reset being blocked, we already have a link.
* We do not have to set it up again. */
if (e1000_check_phy_reset_block(hw))
return E1000_SUCCESS;
#ifndef CONFIG_E1000_NO_NVM
/* Read and store word 0x0F of the EEPROM. This word contains bits
* that determine the hardware's default PAUSE (flow control) mode,
* a bit that determines whether the HW defaults to enabling or
* disabling auto-negotiation, and the direction of the
* SW defined pins. If there is no SW over-ride of the flow
* control setting, then the variable hw->fc will
* be initialized based on a value in the EEPROM.
*/
if (e1000_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG, 1,
&eeprom_data) < 0) {
DEBUGOUT("EEPROM Read Error\n");
return -E1000_ERR_EEPROM;
}
#endif
if (hw->fc == e1000_fc_default) {
switch (hw->mac_type) {
case e1000_ich8lan:
case e1000_82573:
case e1000_82574:
case e1000_igb:
hw->fc = e1000_fc_full;
break;
default:
#ifndef CONFIG_E1000_NO_NVM
ret_val = e1000_read_eeprom(hw,
EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data);
if (ret_val) {
DEBUGOUT("EEPROM Read Error\n");
return -E1000_ERR_EEPROM;
}
if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == 0)
hw->fc = e1000_fc_none;
else if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) ==
EEPROM_WORD0F_ASM_DIR)
hw->fc = e1000_fc_tx_pause;
else
#endif
hw->fc = e1000_fc_full;
break;
}
}
/* We want to save off the original Flow Control configuration just
* in case we get disconnected and then reconnected into a different
* hub or switch with different Flow Control capabilities.
*/
if (hw->mac_type == e1000_82542_rev2_0)
hw->fc &= (~e1000_fc_tx_pause);
if ((hw->mac_type < e1000_82543) && (hw->report_tx_early == 1))
hw->fc &= (~e1000_fc_rx_pause);
hw->original_fc = hw->fc;
DEBUGOUT("After fix-ups FlowControl is now = %x\n", hw->fc);
#ifndef CONFIG_E1000_NO_NVM
/* Take the 4 bits from EEPROM word 0x0F that determine the initial
* polarity value for the SW controlled pins, and setup the
* Extended Device Control reg with that info.
* This is needed because one of the SW controlled pins is used for
* signal detection. So this should be done before e1000_setup_pcs_link()
* or e1000_phy_setup() is called.
*/
if (hw->mac_type == e1000_82543) {
ctrl_ext = ((eeprom_data & EEPROM_WORD0F_SWPDIO_EXT) <<
SWDPIO__EXT_SHIFT);
E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
}
#endif
/* Call the necessary subroutine to configure the link. */
ret_val = (hw->media_type == e1000_media_type_fiber) ?
e1000_setup_fiber_link(nic) : e1000_setup_copper_link(nic);
if (ret_val < 0) {
return ret_val;
}
/* Initialize the flow control address, type, and PAUSE timer
* registers to their default values. This is done even if flow
* control is disabled, because it does not hurt anything to
* initialize these registers.
*/
DEBUGOUT("Initializing the Flow Control address, type"
"and timer regs\n");
/* FCAL/H and FCT are hardcoded to standard values in e1000_ich8lan. */
if (hw->mac_type != e1000_ich8lan) {
E1000_WRITE_REG(hw, FCT, FLOW_CONTROL_TYPE);
E1000_WRITE_REG(hw, FCAH, FLOW_CONTROL_ADDRESS_HIGH);
E1000_WRITE_REG(hw, FCAL, FLOW_CONTROL_ADDRESS_LOW);
}
E1000_WRITE_REG(hw, FCTTV, hw->fc_pause_time);
/* Set the flow control receive threshold registers. Normally,
* these registers will be set to a default threshold that may be
* adjusted later by the driver's runtime code. However, if the
* ability to transmit pause frames in not enabled, then these
* registers will be set to 0.
*/
if (!(hw->fc & e1000_fc_tx_pause)) {
E1000_WRITE_REG(hw, FCRTL, 0);
E1000_WRITE_REG(hw, FCRTH, 0);
} else {
/* We need to set up the Receive Threshold high and low water marks
* as well as (optionally) enabling the transmission of XON frames.
*/
if (hw->fc_send_xon) {
E1000_WRITE_REG(hw, FCRTL,
(hw->fc_low_water | E1000_FCRTL_XONE));
E1000_WRITE_REG(hw, FCRTH, hw->fc_high_water);
} else {
E1000_WRITE_REG(hw, FCRTL, hw->fc_low_water);
E1000_WRITE_REG(hw, FCRTH, hw->fc_high_water);
}
}
return ret_val;
}
/******************************************************************************
* Sets up link for a fiber based adapter
*
* hw - Struct containing variables accessed by shared code
*
* Manipulates Physical Coding Sublayer functions in order to configure
* link. Assumes the hardware has been previously reset and the transmitter
* and receiver are not enabled.
*****************************************************************************/
static int
e1000_setup_fiber_link(struct eth_device *nic)
{
struct e1000_hw *hw = nic->priv;
uint32_t ctrl;
uint32_t status;
uint32_t txcw = 0;
uint32_t i;
uint32_t signal;
int32_t ret_val;
DEBUGFUNC();
/* On adapters with a MAC newer that 82544, SW Defineable pin 1 will be
* set when the optics detect a signal. On older adapters, it will be
* cleared when there is a signal
*/
ctrl = E1000_READ_REG(hw, CTRL);
if ((hw->mac_type > e1000_82544) && !(ctrl & E1000_CTRL_ILOS))
signal = E1000_CTRL_SWDPIN1;
else
signal = 0;
printf("signal for %s is %x (ctrl %08x)!!!!\n", nic->name, signal,
ctrl);
/* Take the link out of reset */
ctrl &= ~(E1000_CTRL_LRST);
e1000_config_collision_dist(hw);
/* Check for a software override of the flow control settings, and setup
* the device accordingly. If auto-negotiation is enabled, then software
* will have to set the "PAUSE" bits to the correct value in the Tranmsit
* Config Word Register (TXCW) and re-start auto-negotiation. However, if
* auto-negotiation is disabled, then software will have to manually
* configure the two flow control enable bits in the CTRL register.
*
* The possible values of the "fc" parameter are:
* 0: Flow control is completely disabled
* 1: Rx flow control is enabled (we can receive pause frames, but
* not send pause frames).
* 2: Tx flow control is enabled (we can send pause frames but we do
* not support receiving pause frames).
* 3: Both Rx and TX flow control (symmetric) are enabled.
*/
switch (hw->fc) {
case e1000_fc_none:
/* Flow control is completely disabled by a software over-ride. */
txcw = (E1000_TXCW_ANE | E1000_TXCW_FD);
break;
case e1000_fc_rx_pause:
/* RX Flow control is enabled and TX Flow control is disabled by a
* software over-ride. Since there really isn't a way to advertise
* that we are capable of RX Pause ONLY, we will advertise that we
* support both symmetric and asymmetric RX PAUSE. Later, we will
* disable the adapter's ability to send PAUSE frames.
*/
txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK);
break;
case e1000_fc_tx_pause:
/* TX Flow control is enabled, and RX Flow control is disabled, by a
* software over-ride.
*/
txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_ASM_DIR);
break;
case e1000_fc_full:
/* Flow control (both RX and TX) is enabled by a software over-ride. */
txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK);
break;
default:
DEBUGOUT("Flow control param set incorrectly\n");
return -E1000_ERR_CONFIG;
break;
}
/* Since auto-negotiation is enabled, take the link out of reset (the link
* will be in reset, because we previously reset the chip). This will
* restart auto-negotiation. If auto-neogtiation is successful then the
* link-up status bit will be set and the flow control enable bits (RFCE
* and TFCE) will be set according to their negotiated value.
*/
DEBUGOUT("Auto-negotiation enabled (%#x)\n", txcw);
E1000_WRITE_REG(hw, TXCW, txcw);
E1000_WRITE_REG(hw, CTRL, ctrl);
E1000_WRITE_FLUSH(hw);
hw->txcw = txcw;
mdelay(1);
/* If we have a signal (the cable is plugged in) then poll for a "Link-Up"
* indication in the Device Status Register. Time-out if a link isn't
* seen in 500 milliseconds seconds (Auto-negotiation should complete in
* less than 500 milliseconds even if the other end is doing it in SW).
*/
if ((E1000_READ_REG(hw, CTRL) & E1000_CTRL_SWDPIN1) == signal) {
DEBUGOUT("Looking for Link\n");
for (i = 0; i < (LINK_UP_TIMEOUT / 10); i++) {
mdelay(10);
status = E1000_READ_REG(hw, STATUS);
if (status & E1000_STATUS_LU)
break;
}
if (i == (LINK_UP_TIMEOUT / 10)) {
/* AutoNeg failed to achieve a link, so we'll call
* e1000_check_for_link. This routine will force the link up if we
* detect a signal. This will allow us to communicate with
* non-autonegotiating link partners.
*/
DEBUGOUT("Never got a valid link from auto-neg!!!\n");
hw->autoneg_failed = 1;
ret_val = e1000_check_for_link(nic);
if (ret_val < 0) {
DEBUGOUT("Error while checking for link\n");
return ret_val;
}
hw->autoneg_failed = 0;
} else {
hw->autoneg_failed = 0;
DEBUGOUT("Valid Link Found\n");
}
} else {
DEBUGOUT("No Signal Detected\n");
return -E1000_ERR_NOLINK;
}
return 0;
}
/******************************************************************************
* Make sure we have a valid PHY and change PHY mode before link setup.
*
* hw - Struct containing variables accessed by shared code
******************************************************************************/
static int32_t
e1000_copper_link_preconfig(struct e1000_hw *hw)
{
uint32_t ctrl;
int32_t ret_val;
uint16_t phy_data;
DEBUGFUNC();
ctrl = E1000_READ_REG(hw, CTRL);
/* With 82543, we need to force speed and duplex on the MAC equal to what
* the PHY speed and duplex configuration is. In addition, we need to
* perform a hardware reset on the PHY to take it out of reset.
*/
if (hw->mac_type > e1000_82543) {
ctrl |= E1000_CTRL_SLU;
ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
E1000_WRITE_REG(hw, CTRL, ctrl);
} else {
ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX
| E1000_CTRL_SLU);
E1000_WRITE_REG(hw, CTRL, ctrl);
ret_val = e1000_phy_hw_reset(hw);
if (ret_val)
return ret_val;
}
/* Make sure we have a valid PHY */
ret_val = e1000_detect_gig_phy(hw);
if (ret_val) {
DEBUGOUT("Error, did not detect valid phy.\n");
return ret_val;
}
DEBUGOUT("Phy ID = %x \n", hw->phy_id);
/* Set PHY to class A mode (if necessary) */
ret_val = e1000_set_phy_mode(hw);
if (ret_val)
return ret_val;
if ((hw->mac_type == e1000_82545_rev_3) ||
(hw->mac_type == e1000_82546_rev_3)) {
ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL,
&phy_data);
phy_data |= 0x00000008;
ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL,
phy_data);
}
if (hw->mac_type <= e1000_82543 ||
hw->mac_type == e1000_82541 || hw->mac_type == e1000_82547 ||
hw->mac_type == e1000_82541_rev_2
|| hw->mac_type == e1000_82547_rev_2)
hw->phy_reset_disable = false;
return E1000_SUCCESS;
}
/*****************************************************************************
*
* This function sets the lplu state according to the active flag. When
* activating lplu this function also disables smart speed and vise versa.
* lplu will not be activated unless the device autonegotiation advertisment
* meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes.
* hw: Struct containing variables accessed by shared code
* active - true to enable lplu false to disable lplu.
*
* returns: - E1000_ERR_PHY if fail to read/write the PHY
* E1000_SUCCESS at any other case.
*
****************************************************************************/
static int32_t
e1000_set_d3_lplu_state(struct e1000_hw *hw, bool active)
{
uint32_t phy_ctrl = 0;
int32_t ret_val;
uint16_t phy_data;
DEBUGFUNC();
if (hw->phy_type != e1000_phy_igp && hw->phy_type != e1000_phy_igp_2
&& hw->phy_type != e1000_phy_igp_3)
return E1000_SUCCESS;
/* During driver activity LPLU should not be used or it will attain link
* from the lowest speeds starting from 10Mbps. The capability is used
* for Dx transitions and states */
if (hw->mac_type == e1000_82541_rev_2
|| hw->mac_type == e1000_82547_rev_2) {
ret_val = e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO,
&phy_data);
if (ret_val)
return ret_val;
} else if (hw->mac_type == e1000_ich8lan) {
/* MAC writes into PHY register based on the state transition
* and start auto-negotiation. SW driver can overwrite the
* settings in CSR PHY power control E1000_PHY_CTRL register. */
phy_ctrl = E1000_READ_REG(hw, PHY_CTRL);
} else {
ret_val = e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
&phy_data);
if (ret_val)
return ret_val;
}
if (!active) {
if (hw->mac_type == e1000_82541_rev_2 ||
hw->mac_type == e1000_82547_rev_2) {
phy_data &= ~IGP01E1000_GMII_FLEX_SPD;
ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO,
phy_data);
if (ret_val)
return ret_val;
} else {
if (hw->mac_type == e1000_ich8lan) {
phy_ctrl &= ~E1000_PHY_CTRL_NOND0A_LPLU;
E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
} else {
phy_data &= ~IGP02E1000_PM_D3_LPLU;
ret_val = e1000_write_phy_reg(hw,
IGP02E1000_PHY_POWER_MGMT, phy_data);
if (ret_val)
return ret_val;
}
}
/* 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 (hw->smart_speed == e1000_smart_speed_on) {
ret_val = e1000_read_phy_reg(hw,
IGP01E1000_PHY_PORT_CONFIG, &phy_data);
if (ret_val)
return ret_val;
phy_data |= IGP01E1000_PSCFR_SMART_SPEED;
ret_val = e1000_write_phy_reg(hw,
IGP01E1000_PHY_PORT_CONFIG, phy_data);
if (ret_val)
return ret_val;
} else if (hw->smart_speed == e1000_smart_speed_off) {
ret_val = e1000_read_phy_reg(hw,
IGP01E1000_PHY_PORT_CONFIG, &phy_data);
if (ret_val)
return ret_val;
phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
ret_val = e1000_write_phy_reg(hw,
IGP01E1000_PHY_PORT_CONFIG, phy_data);
if (ret_val)
return ret_val;
}
} else if ((hw->autoneg_advertised == AUTONEG_ADVERTISE_SPEED_DEFAULT)
|| (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_ALL) ||
(hw->autoneg_advertised == AUTONEG_ADVERTISE_10_100_ALL)) {
if (hw->mac_type == e1000_82541_rev_2 ||
hw->mac_type == e1000_82547_rev_2) {
phy_data |= IGP01E1000_GMII_FLEX_SPD;
ret_val = e1000_write_phy_reg(hw,
IGP01E1000_GMII_FIFO, phy_data);
if (ret_val)
return ret_val;
} else {
if (hw->mac_type == e1000_ich8lan) {
phy_ctrl |= E1000_PHY_CTRL_NOND0A_LPLU;
E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
} else {
phy_data |= IGP02E1000_PM_D3_LPLU;
ret_val = e1000_write_phy_reg(hw,
IGP02E1000_PHY_POWER_MGMT, phy_data);
if (ret_val)
return ret_val;
}
}
/* When LPLU is enabled we should disable SmartSpeed */
ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
&phy_data);
if (ret_val)
return ret_val;
phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
phy_data);
if (ret_val)
return ret_val;
}
return E1000_SUCCESS;
}
/*****************************************************************************
*
* This function sets the lplu d0 state according to the active flag. When
* activating lplu this function also disables smart speed and vise versa.
* lplu will not be activated unless the device autonegotiation advertisment
* meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes.
* hw: Struct containing variables accessed by shared code
* active - true to enable lplu false to disable lplu.
*
* returns: - E1000_ERR_PHY if fail to read/write the PHY
* E1000_SUCCESS at any other case.
*
****************************************************************************/
static int32_t
e1000_set_d0_lplu_state(struct e1000_hw *hw, bool active)
{
uint32_t phy_ctrl = 0;
int32_t ret_val;
uint16_t phy_data;
DEBUGFUNC();
if (hw->mac_type <= e1000_82547_rev_2)
return E1000_SUCCESS;
if (hw->mac_type == e1000_ich8lan) {
phy_ctrl = E1000_READ_REG(hw, PHY_CTRL);
} else if (hw->mac_type == e1000_igb) {
phy_ctrl = E1000_READ_REG(hw, I210_PHY_CTRL);
} else {
ret_val = e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
&phy_data);
if (ret_val)
return ret_val;
}
if (!active) {
if (hw->mac_type == e1000_ich8lan) {
phy_ctrl &= ~E1000_PHY_CTRL_D0A_LPLU;
E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
} else if (hw->mac_type == e1000_igb) {
phy_ctrl &= ~E1000_PHY_CTRL_D0A_LPLU;
E1000_WRITE_REG(hw, I210_PHY_CTRL, phy_ctrl);
} else {
phy_data &= ~IGP02E1000_PM_D0_LPLU;
ret_val = e1000_write_phy_reg(hw,
IGP02E1000_PHY_POWER_MGMT, phy_data);
if (ret_val)
return ret_val;
}
if (hw->mac_type == e1000_igb)
return E1000_SUCCESS;
/* 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 (hw->smart_speed == e1000_smart_speed_on) {
ret_val = e1000_read_phy_reg(hw,
IGP01E1000_PHY_PORT_CONFIG, &phy_data);
if (ret_val)
return ret_val;
phy_data |= IGP01E1000_PSCFR_SMART_SPEED;
ret_val = e1000_write_phy_reg(hw,
IGP01E1000_PHY_PORT_CONFIG, phy_data);
if (ret_val)
return ret_val;
} else if (hw->smart_speed == e1000_smart_speed_off) {
ret_val = e1000_read_phy_reg(hw,
IGP01E1000_PHY_PORT_CONFIG, &phy_data);
if (ret_val)
return ret_val;
phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
ret_val = e1000_write_phy_reg(hw,
IGP01E1000_PHY_PORT_CONFIG, phy_data);
if (ret_val)
return ret_val;
}
} else {
if (hw->mac_type == e1000_ich8lan) {
phy_ctrl |= E1000_PHY_CTRL_D0A_LPLU;
E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
} else if (hw->mac_type == e1000_igb) {
phy_ctrl |= E1000_PHY_CTRL_D0A_LPLU;
E1000_WRITE_REG(hw, I210_PHY_CTRL, phy_ctrl);
} else {
phy_data |= IGP02E1000_PM_D0_LPLU;
ret_val = e1000_write_phy_reg(hw,
IGP02E1000_PHY_POWER_MGMT, phy_data);
if (ret_val)
return ret_val;
}
if (hw->mac_type == e1000_igb)
return E1000_SUCCESS;
/* When LPLU is enabled we should disable SmartSpeed */
ret_val = e1000_read_phy_reg(hw,
IGP01E1000_PHY_PORT_CONFIG, &phy_data);
if (ret_val)
return ret_val;
phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
ret_val = e1000_write_phy_reg(hw,
IGP01E1000_PHY_PORT_CONFIG, phy_data);
if (ret_val)
return ret_val;
}
return E1000_SUCCESS;
}
/********************************************************************
* Copper link setup for e1000_phy_igp series.
*
* hw - Struct containing variables accessed by shared code
*********************************************************************/
static int32_t
e1000_copper_link_igp_setup(struct e1000_hw *hw)
{
uint32_t led_ctrl;
int32_t ret_val;
uint16_t phy_data;
DEBUGFUNC();
if (hw->phy_reset_disable)
return E1000_SUCCESS;
ret_val = e1000_phy_reset(hw);
if (ret_val) {
DEBUGOUT("Error Resetting the PHY\n");
return ret_val;
}
/* Wait 15ms for MAC to configure PHY from eeprom settings */
mdelay(15);
if (hw->mac_type != e1000_ich8lan) {
/* Configure activity LED after PHY reset */
led_ctrl = E1000_READ_REG(hw, LEDCTL);
led_ctrl &= IGP_ACTIVITY_LED_MASK;
led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
E1000_WRITE_REG(hw, LEDCTL, led_ctrl);
}
/* The NVM settings will configure LPLU in D3 for IGP2 and IGP3 PHYs */
if (hw->phy_type == e1000_phy_igp) {
/* disable lplu d3 during driver init */
ret_val = e1000_set_d3_lplu_state(hw, false);
if (ret_val) {
DEBUGOUT("Error Disabling LPLU D3\n");
return ret_val;
}
}
/* disable lplu d0 during driver init */
ret_val = e1000_set_d0_lplu_state(hw, false);
if (ret_val) {
DEBUGOUT("Error Disabling LPLU D0\n");
return ret_val;
}
/* Configure mdi-mdix settings */
ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data);
if (ret_val)
return ret_val;
if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
hw->dsp_config_state = e1000_dsp_config_disabled;
/* Force MDI for earlier revs of the IGP PHY */
phy_data &= ~(IGP01E1000_PSCR_AUTO_MDIX
| IGP01E1000_PSCR_FORCE_MDI_MDIX);
hw->mdix = 1;
} else {
hw->dsp_config_state = e1000_dsp_config_enabled;
phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX;
switch (hw->mdix) {
case 1:
phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
break;
case 2:
phy_data |= IGP01E1000_PSCR_FORCE_MDI_MDIX;
break;
case 0:
default:
phy_data |= IGP01E1000_PSCR_AUTO_MDIX;
break;
}
}
ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data);
if (ret_val)
return ret_val;
/* set auto-master slave resolution settings */
if (hw->autoneg) {
e1000_ms_type phy_ms_setting = hw->master_slave;
if (hw->ffe_config_state == e1000_ffe_config_active)
hw->ffe_config_state = e1000_ffe_config_enabled;
if (hw->dsp_config_state == e1000_dsp_config_activated)
hw->dsp_config_state = e1000_dsp_config_enabled;
/* when autonegotiation advertisment is only 1000Mbps then we
* should disable SmartSpeed and enable Auto MasterSlave
* resolution as hardware default. */
if (hw->autoneg_advertised == ADVERTISE_1000_FULL) {
/* Disable SmartSpeed */
ret_val = e1000_read_phy_reg(hw,
IGP01E1000_PHY_PORT_CONFIG, &phy_data);
if (ret_val)
return ret_val;
phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
ret_val = e1000_write_phy_reg(hw,
IGP01E1000_PHY_PORT_CONFIG, phy_data);
if (ret_val)
return ret_val;
/* Set auto Master/Slave resolution process */
ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL,
&phy_data);
if (ret_val)
return ret_val;
phy_data &= ~CR_1000T_MS_ENABLE;
ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL,
phy_data);
if (ret_val)
return ret_val;
}
ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data);
if (ret_val)
return ret_val;
/* load defaults for future use */
hw->original_master_slave = (phy_data & CR_1000T_MS_ENABLE) ?
((phy_data & CR_1000T_MS_VALUE) ?
e1000_ms_force_master :
e1000_ms_force_slave) :
e1000_ms_auto;
switch (phy_ms_setting) {
case e1000_ms_force_master:
phy_data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE);
break;
case e1000_ms_force_slave:
phy_data |= CR_1000T_MS_ENABLE;
phy_data &= ~(CR_1000T_MS_VALUE);
break;
case e1000_ms_auto:
phy_data &= ~CR_1000T_MS_ENABLE;
default:
break;
}
ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data);
if (ret_val)
return ret_val;
}
return E1000_SUCCESS;
}
/*****************************************************************************
* This function checks the mode of the firmware.
*
* returns - true when the mode is IAMT or false.
****************************************************************************/
bool
e1000_check_mng_mode(struct e1000_hw *hw)
{
uint32_t fwsm;
DEBUGFUNC();
fwsm = E1000_READ_REG(hw, FWSM);
if (hw->mac_type == e1000_ich8lan) {
if ((fwsm & E1000_FWSM_MODE_MASK) ==
(E1000_MNG_ICH_IAMT_MODE << E1000_FWSM_MODE_SHIFT))
return true;
} else if ((fwsm & E1000_FWSM_MODE_MASK) ==
(E1000_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT))
return true;
return false;
}
static int32_t
e1000_write_kmrn_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t data)
{
uint16_t swfw = E1000_SWFW_PHY0_SM;
uint32_t reg_val;
DEBUGFUNC();
if (e1000_is_second_port(hw))
swfw = E1000_SWFW_PHY1_SM;
if (e1000_swfw_sync_acquire(hw, swfw))
return -E1000_ERR_SWFW_SYNC;
reg_val = ((reg_addr << E1000_KUMCTRLSTA_OFFSET_SHIFT)
& E1000_KUMCTRLSTA_OFFSET) | data;
E1000_WRITE_REG(hw, KUMCTRLSTA, reg_val);
udelay(2);
return E1000_SUCCESS;
}
static int32_t
e1000_read_kmrn_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t *data)
{
uint16_t swfw = E1000_SWFW_PHY0_SM;
uint32_t reg_val;
DEBUGFUNC();
if (e1000_is_second_port(hw))
swfw = E1000_SWFW_PHY1_SM;
if (e1000_swfw_sync_acquire(hw, swfw)) {
debug("%s[%i]\n", __func__, __LINE__);
return -E1000_ERR_SWFW_SYNC;
}
/* Write register address */
reg_val = ((reg_addr << E1000_KUMCTRLSTA_OFFSET_SHIFT) &
E1000_KUMCTRLSTA_OFFSET) | E1000_KUMCTRLSTA_REN;
E1000_WRITE_REG(hw, KUMCTRLSTA, reg_val);
udelay(2);
/* Read the data returned */
reg_val = E1000_READ_REG(hw, KUMCTRLSTA);
*data = (uint16_t)reg_val;
return E1000_SUCCESS;
}
/********************************************************************
* Copper link setup for e1000_phy_gg82563 series.
*
* hw - Struct containing variables accessed by shared code
*********************************************************************/
static int32_t
e1000_copper_link_ggp_setup(struct e1000_hw *hw)
{
int32_t ret_val;
uint16_t phy_data;
uint32_t reg_data;
DEBUGFUNC();
if (!hw->phy_reset_disable) {
/* Enable CRS on TX for half-duplex operation. */
ret_val = e1000_read_phy_reg(hw,
GG82563_PHY_MAC_SPEC_CTRL, &phy_data);
if (ret_val)
return ret_val;
phy_data |= GG82563_MSCR_ASSERT_CRS_ON_TX;
/* Use 25MHz for both link down and 1000BASE-T for Tx clock */
phy_data |= GG82563_MSCR_TX_CLK_1000MBPS_25MHZ;
ret_val = e1000_write_phy_reg(hw,
GG82563_PHY_MAC_SPEC_CTRL, phy_data);
if (ret_val)
return ret_val;
/* Options:
* MDI/MDI-X = 0 (default)
* 0 - Auto for all speeds
* 1 - MDI mode
* 2 - MDI-X mode
* 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
*/
ret_val = e1000_read_phy_reg(hw,
GG82563_PHY_SPEC_CTRL, &phy_data);
if (ret_val)
return ret_val;
phy_data &= ~GG82563_PSCR_CROSSOVER_MODE_MASK;
switch (hw->mdix) {
case 1:
phy_data |= GG82563_PSCR_CROSSOVER_MODE_MDI;
break;
case 2:
phy_data |= GG82563_PSCR_CROSSOVER_MODE_MDIX;
break;
case 0:
default:
phy_data |= GG82563_PSCR_CROSSOVER_MODE_AUTO;
break;
}
/* Options:
* disable_polarity_correction = 0 (default)
* Automatic Correction for Reversed Cable Polarity
* 0 - Disabled
* 1 - Enabled
*/
phy_data &= ~GG82563_PSCR_POLARITY_REVERSAL_DISABLE;
ret_val = e1000_write_phy_reg(hw,
GG82563_PHY_SPEC_CTRL, phy_data);
if (ret_val)
return ret_val;
/* SW Reset the PHY so all changes take effect */
ret_val = e1000_phy_reset(hw);
if (ret_val) {
DEBUGOUT("Error Resetting the PHY\n");
return ret_val;
}
} /* phy_reset_disable */
if (hw->mac_type == e1000_80003es2lan) {
/* Bypass RX and TX FIFO's */
ret_val = e1000_write_kmrn_reg(hw,
E1000_KUMCTRLSTA_OFFSET_FIFO_CTRL,
E1000_KUMCTRLSTA_FIFO_CTRL_RX_BYPASS
| E1000_KUMCTRLSTA_FIFO_CTRL_TX_BYPASS);
if (ret_val)
return ret_val;
ret_val = e1000_read_phy_reg(hw,
GG82563_PHY_SPEC_CTRL_2, &phy_data);
if (ret_val)
return ret_val;
phy_data &= ~GG82563_PSCR2_REVERSE_AUTO_NEG;
ret_val = e1000_write_phy_reg(hw,
GG82563_PHY_SPEC_CTRL_2, phy_data);
if (ret_val)
return ret_val;
reg_data = E1000_READ_REG(hw, CTRL_EXT);
reg_data &= ~(E1000_CTRL_EXT_LINK_MODE_MASK);
E1000_WRITE_REG(hw, CTRL_EXT, reg_data);
ret_val = e1000_read_phy_reg(hw,
GG82563_PHY_PWR_MGMT_CTRL, &phy_data);
if (ret_val)
return ret_val;
/* Do not init these registers when the HW is in IAMT mode, since the
* firmware will have already initialized them. We only initialize
* them if the HW is not in IAMT mode.
*/
if (e1000_check_mng_mode(hw) == false) {
/* Enable Electrical Idle on the PHY */
phy_data |= GG82563_PMCR_ENABLE_ELECTRICAL_IDLE;
ret_val = e1000_write_phy_reg(hw,
GG82563_PHY_PWR_MGMT_CTRL, phy_data);
if (ret_val)
return ret_val;
ret_val = e1000_read_phy_reg(hw,
GG82563_PHY_KMRN_MODE_CTRL, &phy_data);
if (ret_val)
return ret_val;
phy_data &= ~GG82563_KMCR_PASS_FALSE_CARRIER;
ret_val = e1000_write_phy_reg(hw,
GG82563_PHY_KMRN_MODE_CTRL, phy_data);
if (ret_val)
return ret_val;
}
/* Workaround: Disable padding in Kumeran interface in the MAC
* and in the PHY to avoid CRC errors.
*/
ret_val = e1000_read_phy_reg(hw,
GG82563_PHY_INBAND_CTRL, &phy_data);
if (ret_val)
return ret_val;
phy_data |= GG82563_ICR_DIS_PADDING;
ret_val = e1000_write_phy_reg(hw,
GG82563_PHY_INBAND_CTRL, phy_data);
if (ret_val)
return ret_val;
}
return E1000_SUCCESS;
}
/********************************************************************
* Copper link setup for e1000_phy_m88 series.
*
* hw - Struct containing variables accessed by shared code
*********************************************************************/
static int32_t
e1000_copper_link_mgp_setup(struct e1000_hw *hw)
{
int32_t ret_val;
uint16_t phy_data;
DEBUGFUNC();
if (hw->phy_reset_disable)
return E1000_SUCCESS;
/* Enable CRS on TX. This must be set for half-duplex operation. */
ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
if (ret_val)
return ret_val;
phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
/* Options:
* MDI/MDI-X = 0 (default)
* 0 - Auto for all speeds
* 1 - MDI mode
* 2 - MDI-X mode
* 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
*/
phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
switch (hw->mdix) {
case 1:
phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE;
break;
case 2:
phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE;
break;
case 3:
phy_data |= M88E1000_PSCR_AUTO_X_1000T;
break;
case 0:
default:
phy_data |= M88E1000_PSCR_AUTO_X_MODE;
break;
}
/* Options:
* disable_polarity_correction = 0 (default)
* Automatic Correction for Reversed Cable Polarity
* 0 - Disabled
* 1 - Enabled
*/
phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL;
ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
if (ret_val)
return ret_val;
if (hw->phy_revision < M88E1011_I_REV_4) {
/* Force TX_CLK in the Extended PHY Specific Control Register
* to 25MHz clock.
*/
ret_val = e1000_read_phy_reg(hw,
M88E1000_EXT_PHY_SPEC_CTRL, &phy_data);
if (ret_val)
return ret_val;
phy_data |= M88E1000_EPSCR_TX_CLK_25;
if ((hw->phy_revision == E1000_REVISION_2) &&
(hw->phy_id == M88E1111_I_PHY_ID)) {
/* Vidalia Phy, set the downshift counter to 5x */
phy_data &= ~(M88EC018_EPSCR_DOWNSHIFT_COUNTER_MASK);
phy_data |= M88EC018_EPSCR_DOWNSHIFT_COUNTER_5X;
ret_val = e1000_write_phy_reg(hw,
M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
if (ret_val)
return ret_val;
} else {
/* Configure Master and Slave downshift values */
phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK
| M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK);
phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X
| M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X);
ret_val = e1000_write_phy_reg(hw,
M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
if (ret_val)
return ret_val;
}
}
/* SW Reset the PHY so all changes take effect */
ret_val = e1000_phy_reset(hw);
if (ret_val) {
DEBUGOUT("Error Resetting the PHY\n");
return ret_val;
}
return E1000_SUCCESS;
}
/********************************************************************
* Setup auto-negotiation and flow control advertisements,
* and then perform auto-negotiation.
*
* hw - Struct containing variables accessed by shared code
*********************************************************************/
static int32_t
e1000_copper_link_autoneg(struct e1000_hw *hw)
{
int32_t ret_val;
uint16_t phy_data;
DEBUGFUNC();
/* Perform some bounds checking on the hw->autoneg_advertised
* parameter. If this variable is zero, then set it to the default.
*/
hw->autoneg_advertised &= AUTONEG_ADVERTISE_SPEED_DEFAULT;
/* If autoneg_advertised is zero, we assume it was not defaulted
* by the calling code so we set to advertise full capability.
*/
if (hw->autoneg_advertised == 0)
hw->autoneg_advertised = AUTONEG_ADVERTISE_SPEED_DEFAULT;
/* IFE phy only supports 10/100 */
if (hw->phy_type == e1000_phy_ife)
hw->autoneg_advertised &= AUTONEG_ADVERTISE_10_100_ALL;
DEBUGOUT("Reconfiguring auto-neg advertisement params\n");
ret_val = e1000_phy_setup_autoneg(hw);
if (ret_val) {
DEBUGOUT("Error Setting up Auto-Negotiation\n");
return ret_val;
}
DEBUGOUT("Restarting Auto-Neg\n");
/* Restart auto-negotiation by setting the Auto Neg Enable bit and
* the Auto Neg Restart bit in the PHY control register.
*/
ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data);
if (ret_val)
return ret_val;
phy_data |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG);
ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data);
if (ret_val)
return ret_val;
/* Does the user want to wait for Auto-Neg to complete here, or
* check at a later time (for example, callback routine).
*/
/* If we do not wait for autonegtation to complete I
* do not see a valid link status.
* wait_autoneg_complete = 1 .
*/
if (hw->wait_autoneg_complete) {
ret_val = e1000_wait_autoneg(hw);
if (ret_val) {
DEBUGOUT("Error while waiting for autoneg"
"to complete\n");
return ret_val;
}
}
hw->get_link_status = true;
return E1000_SUCCESS;
}
/******************************************************************************
* Config the MAC and the PHY after link is up.
* 1) Set up the MAC to the current PHY speed/duplex
* if we are on 82543. If we
* are on newer silicon, we only need to configure
* collision distance in the Transmit Control Register.
* 2) Set up flow control on the MAC to that established with
* the link partner.
* 3) Config DSP to improve Gigabit link quality for some PHY revisions.
*
* hw - Struct containing variables accessed by shared code
******************************************************************************/
static int32_t
e1000_copper_link_postconfig(struct e1000_hw *hw)
{
int32_t ret_val;
DEBUGFUNC();
if (hw->mac_type >= e1000_82544) {
e1000_config_collision_dist(hw);
} else {
ret_val = e1000_config_mac_to_phy(hw);
if (ret_val) {
DEBUGOUT("Error configuring MAC to PHY settings\n");
return ret_val;
}
}
ret_val = e1000_config_fc_after_link_up(hw);
if (ret_val) {
DEBUGOUT("Error Configuring Flow Control\n");
return ret_val;
}
return E1000_SUCCESS;
}
/******************************************************************************
* Detects which PHY is present and setup the speed and duplex
*
* hw - Struct containing variables accessed by shared code
******************************************************************************/
static int
e1000_setup_copper_link(struct eth_device *nic)
{
struct e1000_hw *hw = nic->priv;
int32_t ret_val;
uint16_t i;
uint16_t phy_data;
uint16_t reg_data;
DEBUGFUNC();
switch (hw->mac_type) {
case e1000_80003es2lan:
case e1000_ich8lan:
/* Set the mac to wait the maximum time between each
* iteration and increase the max iterations when
* polling the phy; this fixes erroneous timeouts at 10Mbps. */
ret_val = e1000_write_kmrn_reg(hw,
GG82563_REG(0x34, 4), 0xFFFF);
if (ret_val)
return ret_val;
ret_val = e1000_read_kmrn_reg(hw,
GG82563_REG(0x34, 9), &reg_data);
if (ret_val)
return ret_val;
reg_data |= 0x3F;
ret_val = e1000_write_kmrn_reg(hw,
GG82563_REG(0x34, 9), reg_data);
if (ret_val)
return ret_val;
default:
break;
}
/* Check if it is a valid PHY and set PHY mode if necessary. */
ret_val = e1000_copper_link_preconfig(hw);
if (ret_val)
return ret_val;
switch (hw->mac_type) {
case e1000_80003es2lan:
/* Kumeran registers are written-only */
reg_data =
E1000_KUMCTRLSTA_INB_CTRL_LINK_STATUS_TX_TIMEOUT_DEFAULT;
reg_data |= E1000_KUMCTRLSTA_INB_CTRL_DIS_PADDING;
ret_val = e1000_write_kmrn_reg(hw,
E1000_KUMCTRLSTA_OFFSET_INB_CTRL, reg_data);
if (ret_val)
return ret_val;
break;
default:
break;
}
if (hw->phy_type == e1000_phy_igp ||
hw->phy_type == e1000_phy_igp_3 ||
hw->phy_type == e1000_phy_igp_2) {
ret_val = e1000_copper_link_igp_setup(hw);
if (ret_val)
return ret_val;
} else if (hw->phy_type == e1000_phy_m88 ||
hw->phy_type == e1000_phy_igb) {
ret_val = e1000_copper_link_mgp_setup(hw);
if (ret_val)
return ret_val;
} else if (hw->phy_type == e1000_phy_gg82563) {
ret_val = e1000_copper_link_ggp_setup(hw);
if (ret_val)
return ret_val;
}
/* always auto */
/* Setup autoneg and flow control advertisement
* and perform autonegotiation */
ret_val = e1000_copper_link_autoneg(hw);
if (ret_val)
return ret_val;
/* Check link status. Wait up to 100 microseconds for link to become
* valid.
*/
for (i = 0; i < 10; i++) {
ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
if (ret_val)
return ret_val;
ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
if (ret_val)
return ret_val;
if (phy_data & MII_SR_LINK_STATUS) {
/* Config the MAC and PHY after link is up */
ret_val = e1000_copper_link_postconfig(hw);
if (ret_val)
return ret_val;
DEBUGOUT("Valid link established!!!\n");
return E1000_SUCCESS;
}
udelay(10);
}
DEBUGOUT("Unable to establish link!!!\n");
return E1000_SUCCESS;
}
/******************************************************************************
* Configures PHY autoneg and flow control advertisement settings
*
* hw - Struct containing variables accessed by shared code
******************************************************************************/
int32_t
e1000_phy_setup_autoneg(struct e1000_hw *hw)
{
int32_t ret_val;
uint16_t mii_autoneg_adv_reg;
uint16_t mii_1000t_ctrl_reg;
DEBUGFUNC();
/* Read the MII Auto-Neg Advertisement Register (Address 4). */
ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg);
if (ret_val)
return ret_val;
if (hw->phy_type != e1000_phy_ife) {
/* Read the MII 1000Base-T Control Register (Address 9). */
ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL,
&mii_1000t_ctrl_reg);
if (ret_val)
return ret_val;
} else
mii_1000t_ctrl_reg = 0;
/* Need to parse both autoneg_advertised and fc and set up
* the appropriate PHY registers. First we will parse for
* autoneg_advertised software override. Since we can advertise
* a plethora of combinations, we need to check each bit
* individually.
*/
/* First we clear all the 10/100 mb speed bits in the Auto-Neg
* Advertisement Register (Address 4) and the 1000 mb speed bits in
* the 1000Base-T Control Register (Address 9).
*/
mii_autoneg_adv_reg &= ~REG4_SPEED_MASK;
mii_1000t_ctrl_reg &= ~REG9_SPEED_MASK;
DEBUGOUT("autoneg_advertised %x\n", hw->autoneg_advertised);
/* Do we want to advertise 10 Mb Half Duplex? */
if (hw->autoneg_advertised & ADVERTISE_10_HALF) {
DEBUGOUT("Advertise 10mb Half duplex\n");
mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS;
}
/* Do we want to advertise 10 Mb Full Duplex? */
if (hw->autoneg_advertised & ADVERTISE_10_FULL) {
DEBUGOUT("Advertise 10mb Full duplex\n");
mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS;
}
/* Do we want to advertise 100 Mb Half Duplex? */
if (hw->autoneg_advertised & ADVERTISE_100_HALF) {
DEBUGOUT("Advertise 100mb Half duplex\n");
mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS;
}
/* Do we want to advertise 100 Mb Full Duplex? */
if (hw->autoneg_advertised & ADVERTISE_100_FULL) {
DEBUGOUT("Advertise 100mb Full duplex\n");
mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS;
}
/* We do not allow the Phy to advertise 1000 Mb Half Duplex */
if (hw->autoneg_advertised & ADVERTISE_1000_HALF) {
DEBUGOUT
("Advertise 1000mb Half duplex requested, request denied!\n");
}
/* Do we want to advertise 1000 Mb Full Duplex? */
if (hw->autoneg_advertised & ADVERTISE_1000_FULL) {
DEBUGOUT("Advertise 1000mb Full duplex\n");
mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS;
}
/* Check for a software override of the flow control settings, and
* setup the PHY advertisement registers accordingly. If
* auto-negotiation is enabled, then software will have to set the
* "PAUSE" bits to the correct value in the Auto-Negotiation
* Advertisement Register (PHY_AUTONEG_ADV) and re-start auto-negotiation.
*
* The possible values of the "fc" parameter are:
* 0: Flow control is completely disabled
* 1: Rx flow control is enabled (we can receive pause frames