[PATCH 2.6.25.3 4/5] atl1e: Atheros L1E Gigabit Ethernet driver

From: Jie Yang
Date: Thu Jun 26 2008 - 01:39:51 EST

From: Jie Yang <jie.yang@xxxxxxxxxxx>

Full patch for the Atheros L1E Gigabit Ethernet driver.
Supportring AR8121, AR8113 and AR8114

Signed-off-by: Jie Yang <jie.yang @atheros.com>
---
diff -uprN -X linux-2.6.25.3.orig/Documentation/dontdiff linux-2.6.25.3.orig/drivers/net/atl1e/atl1e_hw.c linux-2.6.25.3.atheros/drivers/net/atl1e/atl1e_hw.c
--- linux-2.6.25.3.orig/drivers/net/atl1e/atl1e_hw.c 1970-01-01 08:00:00.000000000 +0800
+++ linux-2.6.25.3.atheros/drivers/net/atl1e/atl1e_hw.c 2008-06-20 11:22:34.000000000 +0800
@@ -0,0 +1,748 @@
+/*
+ * Copyright(c) 2007 Atheros Corporation. All rights reserved.
+ *
+ * Derived from Intel e1000 driver
+ * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that 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.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * There are a lot of defines in here that are unused and/or have cryptic
+ * names. Please leave them alone, as they're the closest thing we have
+ * to a spec from Atheros at present. *ahem* -- CHS
+ */
+
+#include <linux/mii.h>
+
+#include "atl1e.h"
+/*
+ * The little-endian AUTODIN II ethernet CRC calculations.
+ * A big-endian version is also available.
+ * This is slow but compact code. Do not use this routine
+ * for bulk data, use a table-based routine instead.
+ * This is common code and should be moved to net/core/crc.c.
+ * Chips may use the upper or lower CRC bits, and may reverse
+ * and/or invert them. Select the endian-ness that results
+ * in minimal calculations.
+ */
+static int get_permanent_address(struct atl1e_hw *hw);
+
+static u32 ether_crc_le(int length, unsigned char *data)
+{
+ u32 crc = ~0; /* Initial value. */
+ while (--length >= 0) {
+ unsigned char current_octet = *data++;
+ int bit;
+ for (bit = 8; --bit >= 0; current_octet >>= 1) {
+ if ((crc ^ current_octet) & 1) {
+ crc >>= 1;
+ crc ^= 0xedb88320;
+ } else {
+ crc >>= 1;
+ }
+ }
+ }
+ return ~crc;
+}
+
+/********************************************************************
+ * Reset the transmit and receive units; mask and clear all interrupts.
+ *
+ * hw - Struct containing variables accessed by shared code
+ * return : AT_SUCCESS or idle status (if error)
+ ********************************************************************/
+int atl1e_reset_hw(struct atl1e_hw *hw)
+{
+#define AT_HW_MAX_IDLE_DELAY 10
+ u32 idle_status_data = 0;
+ u16 pci_cfg_cmd_word = 0;
+ int timeout = 0;
+
+ DEBUGFUNC("atl1e_reset_hw");
+
+ /* Workaround for PCI problem when BIOS sets MMRBC incorrectly. */
+ atl1e_read_pci_cfg(hw, PCI_REG_COMMAND, &pci_cfg_cmd_word);
+ if ((pci_cfg_cmd_word & (CMD_IO_SPACE |
+ CMD_MEMORY_SPACE | CMD_BUS_MASTER))
+ != (CMD_IO_SPACE | CMD_MEMORY_SPACE | CMD_BUS_MASTER)) {
+ pci_cfg_cmd_word |= (CMD_IO_SPACE |
+ CMD_MEMORY_SPACE | CMD_BUS_MASTER);
+ atl1e_write_pci_cfg(hw, PCI_REG_COMMAND, &pci_cfg_cmd_word);
+ }
+
+ /* Issue Soft Reset to the MAC. This will reset the chip's
+ * transmit, receive, DMA. It will not effect
+ * the current PCI configuration. The global reset bit is self-
+ * clearing, and should clear within a microsecond.
+ */
+ AT_WRITE_REG(hw, REG_MASTER_CTRL,
+ MASTER_CTRL_LED_MODE | MASTER_CTRL_SOFT_RST);
+ wmb();
+ msec_delay(1);
+
+ /* Wait at least 10ms for All module to be Idle */
+ for (timeout = 0; timeout < AT_HW_MAX_IDLE_DELAY; timeout++) {
+ idle_status_data = AT_READ_REG(hw, REG_IDLE_STATUS);
+ if (idle_status_data == 0)
+ break;
+ msec_delay(1);
+ cpu_relax();
+ }
+
+ if (timeout >= AT_HW_MAX_IDLE_DELAY) {
+ DEBUGOUT("MAC state machine cann't be idle since"
+ " disabled for 10ms second\n");
+ return AT_ERR_TIMEOUT;
+ }
+
+ return AT_SUCCESS;
+#undef AT_HW_MAX_IDLE_DELAY
+}
+
+
+/*********************************************************************
+ * Reads the adapter's MAC address from the EEPROM
+ *
+ * hw - Struct containing variables accessed by shared code
+ *********************************************************************/
+int atl1e_read_mac_addr(struct atl1e_hw *hw)
+{
+ int err = 0;
+
+ DEBUGFUNC("atl1e_read_mac_addr");
+
+ err = get_permanent_address(hw);
+ if (err)
+ return AT_ERR_EEPROM;
+ memcpy(hw->mac_addr, hw->perm_mac_addr, sizeof(hw->perm_mac_addr));
+ return AT_SUCCESS;
+}
+
+/*********************************************************************
+ * Hashes an address to determine its location in the multicast table
+ *
+ * hw - Struct containing variables accessed by shared code
+ * mc_addr - the multicast address to hash
+ *********************************************************************/
+/*
+ * atl1e_hash_mc_addr
+ * purpose
+ * set hash value for a multicast address
+ * hash calcu processing :
+ * 1. calcu 32bit CRC for multicast address
+ * 2. reverse crc with MSB to LSB
+ */
+u32 atl1e_hash_mc_addr(struct atl1e_hw *hw, u8 *mc_addr)
+{
+ u32 crc32;
+ u32 value = 0;
+ int i;
+
+ crc32 = ether_crc_le(6, mc_addr);
+ crc32 = ~crc32;
+ for (i = 0; i < 32; i++)
+ value |= (((crc32 >> i) & 1) << (31 - i));
+
+ return value;
+}
+
+
+/********************************************************************
+ * Sets the bit in the multicast table corresponding to the hash value.
+ *
+ * hw - Struct containing variables accessed by shared code
+ * hash_value - Multicast address hash value
+ ********************************************************************/
+void atl1e_hash_set(struct atl1e_hw *hw, u32 hash_value)
+{
+ u32 hash_bit, hash_reg;
+ u32 mta;
+
+ /* The HASH Table is a register array of 2 32-bit registers.
+ * It is treated like an array of 64 bits. We want to set
+ * bit BitArray[hash_value]. So we figure out what register
+ * the bit is in, read it, OR in the new bit, then write
+ * back the new value. The register is determined by the
+ * upper 7 bits of the hash value and the bit within that
+ * register are determined by the lower 5 bits of the value.
+ */
+ hash_reg = (hash_value >> 31) & 0x1;
+ hash_bit = (hash_value >> 26) & 0x1F;
+
+ mta = AT_READ_REG_ARRAY(hw, REG_RX_HASH_TABLE, hash_reg);
+
+ mta |= (1 << hash_bit);
+
+ AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, hash_reg, mta);
+}
+
+
+/*
+ * atl1e_init_pcie - init PCIE module
+ */
+static void atl1e_init_pcie(struct atl1e_hw *hw)
+{
+ u32 value;
+ /* comment 2lines below to save more power when sususpend
+ value = LTSSM_TEST_MODE_DEF;
+ AT_WRITE_REG(hw, REG_LTSSM_TEST_MODE, value);
+ */
+
+ /* pcie flow control mode change */
+ value = AT_READ_REG(hw, 0x1008);
+ value |= 0x8000;
+ AT_WRITE_REG(hw, 0x1008, value);
+}
+
+/********************************************************************
+ * 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 multicast table,
+ * and Calls routines to setup link
+ * Leaves the transmit and receive units disabled and uninitialized.
+ ********************************************************************/
+int atl1e_init_hw(struct atl1e_hw *hw)
+{
+ s32 ret_val = 0;
+
+ DEBUGFUNC("atl1e_init_hw");
+
+ atl1e_init_pcie(hw);
+
+
+ /* Zero out the Multicast HASH table */
+ /* clear the old settings from the multicast hash table */
+ AT_WRITE_REG(hw, REG_RX_HASH_TABLE, 0);
+ AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, 1, 0);
+
+ ret_val = atl1e_phy_init(hw);
+
+ DEBUGOUT1("atl1e_init_hw: ret: %d", ret_val);
+
+ return ret_val;
+}
+
+int atl1e_restart_autoneg(struct atl1e_hw *hw)
+{
+ int err = 0;
+
+ err = atl1e_write_phy_reg(hw, MII_ADVERTISE, hw->mii_autoneg_adv_reg);
+ if (err)
+ return err;
+
+ if (hw->nic_type == athr_l1e || hw->nic_type == athr_l2e_revA) {
+ err = atl1e_write_phy_reg(hw, MII_AT001_CR,
+ hw->mii_1000t_ctrl_reg);
+ if (err)
+ return err;
+ }
+
+ err = atl1e_write_phy_reg(hw, MII_BMCR,
+ MII_CR_RESET | MII_CR_AUTO_NEG_EN |
+ MII_CR_RESTART_AUTO_NEG);
+ return err;
+}
+
+
+/******************************************************************************
+ * Detects the current speed and duplex settings of the hardware.
+ *
+ * hw - Struct containing variables accessed by shared code
+ * speed - Speed of the connection
+ * duplex - Duplex setting of the connection
+ *****************************************************************************/
+int atl1e_get_speed_and_duplex(struct atl1e_hw *hw, u16 *speed, u16 *duplex)
+{
+ int err;
+ u16 phy_data;
+
+ DEBUGFUNC("atl1e_get_speed_and_duplex");
+
+ /* Read PHY Specific Status Register (17) */
+ err = atl1e_read_phy_reg(hw, MII_AT001_PSSR, &phy_data);
+ if (err)
+ return err;
+
+ if (!(phy_data & MII_AT001_PSSR_SPD_DPLX_RESOLVED))
+ return AT_ERR_PHY_RES;
+
+ switch (phy_data & MII_AT001_PSSR_SPEED) {
+ case MII_AT001_PSSR_1000MBS:
+ *speed = SPEED_1000;
+ DEBUGOUT("1000 Mbps");
+ break;
+ case MII_AT001_PSSR_100MBS:
+ *speed = SPEED_100;
+ DEBUGOUT("100 Mbs, ");
+ break;
+ case MII_AT001_PSSR_10MBS:
+ *speed = SPEED_10;
+ DEBUGOUT("10 Mbs, ");
+ break;
+ default:
+ DEBUGOUT("Error Speed !\n");
+ return AT_ERR_PHY_SPEED;
+ break;
+ }
+
+ if (phy_data & MII_AT001_PSSR_DPLX) {
+ *duplex = FULL_DUPLEX;
+ DEBUGOUT("Full Duplex");
+ } else {
+ *duplex = HALF_DUPLEX;
+ DEBUGOUT(" Half Duplex");
+ }
+
+ return AT_SUCCESS;
+}
+
+/*********************************************************************
+ * Reads the value from a PHY register
+ * hw - Struct containing variables accessed by shared code
+ * reg_addr - address of the PHY register to read
+ *********************************************************************/
+int atl1e_read_phy_reg(struct atl1e_hw *hw, u16 reg_addr, u16 *phy_data)
+{
+ u32 val;
+ int i;
+
+ DEBUGFUNC("atl1e_read_phy_reg");
+
+ val = ((u32)(reg_addr&MDIO_REG_ADDR_MASK)) << MDIO_REG_ADDR_SHIFT |
+ MDIO_START | MDIO_SUP_PREAMBLE | MDIO_RW |
+ MDIO_CLK_25_4 << MDIO_CLK_SEL_SHIFT;
+
+ AT_WRITE_REG(hw, REG_MDIO_CTRL, val);
+
+ wmb();
+
+ for (i = 0; i < MDIO_WAIT_TIMES; i++) {
+ usec_delay(2);
+ val = AT_READ_REG(hw, REG_MDIO_CTRL);
+ if (!(val & (MDIO_START | MDIO_BUSY)))
+ break;
+ wmb();
+ }
+ if (!(val & (MDIO_START | MDIO_BUSY))) {
+ *phy_data = (u16)val;
+ return AT_SUCCESS;
+ }
+
+ return AT_ERR_PHY;
+}
+
+/********************************************************************
+ * Writes a value to a PHY register
+ * hw - Struct containing variables accessed by shared code
+ * reg_addr - address of the PHY register to write
+ * data - data to write to the PHY
+ ********************************************************************/
+int atl1e_write_phy_reg(struct atl1e_hw *hw, u32 reg_addr, u16 phy_data)
+{
+ int i;
+ u32 val;
+
+ val = ((u32)(phy_data & MDIO_DATA_MASK)) << MDIO_DATA_SHIFT |
+ (reg_addr&MDIO_REG_ADDR_MASK) << MDIO_REG_ADDR_SHIFT |
+ MDIO_SUP_PREAMBLE |
+ MDIO_START |
+ MDIO_CLK_25_4 << MDIO_CLK_SEL_SHIFT;
+
+ AT_WRITE_REG(hw, REG_MDIO_CTRL, val);
+ wmb();
+
+ for (i = 0; i < MDIO_WAIT_TIMES; i++) {
+ usec_delay(2);
+ val = AT_READ_REG(hw, REG_MDIO_CTRL);
+ if (!(val & (MDIO_START | MDIO_BUSY)))
+ break;
+ wmb();
+ }
+
+ if (!(val & (MDIO_START | MDIO_BUSY)))
+ return AT_SUCCESS;
+
+ return AT_ERR_PHY;
+}
+
+/********************************************************************
+ * Configures PHY autoneg and flow control advertisement settings
+ *
+ * hw - Struct containing variables accessed by shared code
+ ********************************************************************/
+static int atl1e_phy_setup_autoneg_adv(struct atl1e_hw *hw)
+{
+ s32 ret_val;
+ u16 mii_autoneg_adv_reg;
+ u16 mii_1000t_ctrl_reg;
+
+ DEBUGFUNC("atl1e_phy_setup_autoneg_adv");
+
+ if (0 != hw->mii_autoneg_adv_reg)
+ return AT_SUCCESS;
+ /* Read the MII Auto-Neg Advertisement Register (Address 4/9). */
+ mii_autoneg_adv_reg = MII_AR_DEFAULT_CAP_MASK;
+ mii_1000t_ctrl_reg = MII_AT001_CR_1000T_DEFAULT_CAP_MASK;
+
+ /* Need to parse autoneg_advertised 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 &= ~MII_AR_SPEED_MASK;
+ mii_1000t_ctrl_reg &= ~MII_AT001_CR_1000T_SPEED_MASK;
+
+ /* Need to parse MediaType and setup the
+ * appropriate PHY registers.
+ */
+ switch (hw->media_type) {
+ case MEDIA_TYPE_AUTO_SENSOR:
+ mii_autoneg_adv_reg |= (MII_AR_10T_HD_CAPS |
+ MII_AR_10T_FD_CAPS |
+ MII_AR_100TX_HD_CAPS |
+ MII_AR_100TX_FD_CAPS);
+ hw->autoneg_advertised = ADVERTISE_10_HALF |
+ ADVERTISE_10_FULL |
+ ADVERTISE_100_HALF |
+ ADVERTISE_100_FULL;
+ if (hw->nic_type == athr_l1e) {
+ mii_1000t_ctrl_reg |=
+ MII_AT001_CR_1000T_FD_CAPS;
+ hw->autoneg_advertised |= ADVERTISE_1000_FULL;
+ }
+ break;
+
+ case MEDIA_TYPE_100M_FULL:
+ mii_autoneg_adv_reg |= MII_AR_100TX_FD_CAPS;
+ hw->autoneg_advertised = ADVERTISE_100_FULL;
+ break;
+
+ case MEDIA_TYPE_100M_HALF:
+ mii_autoneg_adv_reg |= MII_AR_100TX_HD_CAPS;
+ hw->autoneg_advertised = ADVERTISE_100_HALF;
+ break;
+
+ case MEDIA_TYPE_10M_FULL:
+ mii_autoneg_adv_reg |= MII_AR_10T_FD_CAPS;
+ hw->autoneg_advertised = ADVERTISE_10_FULL;
+ break;
+
+ default:
+ mii_autoneg_adv_reg |= MII_AR_10T_HD_CAPS;
+ hw->autoneg_advertised = ADVERTISE_10_HALF;
+ break;
+ }
+
+ /* flow control fixed to enable all */
+ mii_autoneg_adv_reg |= (MII_AR_ASM_DIR | MII_AR_PAUSE);
+
+ hw->mii_autoneg_adv_reg = mii_autoneg_adv_reg;
+ hw->mii_1000t_ctrl_reg = mii_1000t_ctrl_reg;
+
+ ret_val = atl1e_write_phy_reg(hw, MII_ADVERTISE, mii_autoneg_adv_reg);
+ if (ret_val)
+ return ret_val;
+
+ if (hw->nic_type == athr_l1e || hw->nic_type == athr_l2e_revA) {
+ ret_val = atl1e_write_phy_reg(hw, MII_AT001_CR,
+ mii_1000t_ctrl_reg);
+ if (ret_val)
+ return ret_val;
+ }
+
+ return AT_SUCCESS;
+}
+
+int atl1e_phy_init(struct atl1e_hw *hw)
+{
+ s32 ret_val;
+ u16 phy_val;
+
+ if (hw->phy_configured) {
+ if (hw->re_autoneg) {
+ hw->re_autoneg = false;
+ return atl1e_restart_autoneg(hw);
+ }
+ return AT_SUCCESS;
+ }
+
+ /* RESET GPHY Core */
+ AT_WRITE_REGW(hw, REG_GPHY_CTRL, GPHY_CTRL_DEFAULT);
+ msec_delay(2);
+ AT_WRITE_REGW(hw, REG_GPHY_CTRL, GPHY_CTRL_DEFAULT |
+ GPHY_CTRL_EXT_RESET);
+ msec_delay(2);
+
+ /* patches */
+ /* p1. eable hibernation mode */
+ ret_val = atl1e_write_phy_reg(hw, MII_DBG_ADDR, 0xB);
+ if (ret_val)
+ return ret_val;
+ ret_val = atl1e_write_phy_reg(hw, MII_DBG_DATA, 0xBC00);
+ if (ret_val)
+ return ret_val;
+ /* p2. set Class A/B for all modes */
+ ret_val = atl1e_write_phy_reg(hw, MII_DBG_ADDR, 0);
+ if (ret_val)
+ return ret_val;
+ phy_val = 0x02ef;
+ /* remove Class AB */
+ /* phy_val = hw->emi_ca ? 0x02ef : 0x02df; */
+ ret_val = atl1e_write_phy_reg(hw, MII_DBG_DATA, phy_val);
+ if (ret_val)
+ return ret_val;
+ /* p3. 10B ??? */
+ ret_val = atl1e_write_phy_reg(hw, MII_DBG_ADDR, 0x12);
+ if (ret_val)
+ return ret_val;
+ ret_val = atl1e_write_phy_reg(hw, MII_DBG_DATA, 0x4C04);
+ if (ret_val)
+ return ret_val;
+ /* p4. 1000T power */
+ ret_val = atl1e_write_phy_reg(hw, MII_DBG_ADDR, 0x4);
+ if (ret_val)
+ return ret_val;
+ ret_val = atl1e_write_phy_reg(hw, MII_DBG_DATA, 0x8BBB);
+ if (ret_val)
+ return ret_val;
+
+ ret_val = atl1e_write_phy_reg(hw, MII_DBG_ADDR, 0x5);
+ if (ret_val)
+ return ret_val;
+ ret_val = atl1e_write_phy_reg(hw, MII_DBG_DATA, 0x2C46);
+ if (ret_val)
+ return ret_val;
+
+ msec_delay(1);
+
+ /*Enable PHY LinkChange Interrupt */
+ ret_val = atl1e_write_phy_reg(hw, MII_INT_CTRL, 0xC00);
+ if (ret_val) {
+ DEBUGOUT("Error enable PHY linkChange Interrupt");
+ return ret_val;
+ }
+ /* setup AutoNeg parameters */
+ ret_val = atl1e_phy_setup_autoneg_adv(hw);
+ if (ret_val) {
+ DEBUGOUT("Error Setting up Auto-Negotiation");
+ return ret_val;
+ }
+ /* SW.Reset & En-Auto-Neg to restart Auto-Neg*/
+ DEBUGOUT("Restarting Auto-Neg");
+ ret_val = atl1e_phy_commit(hw);
+ if (ret_val) {
+ DEBUGOUT("Error Resetting the phy");
+ return ret_val;
+ }
+
+ hw->phy_configured = true;
+
+ return AT_SUCCESS;
+}
+
+/*******************************************************************
+ * Resets the PHY and make all config validate
+ *
+ * hw - Struct containing variables accessed by shared code
+ *
+ * Sets bit 15 and 12 of the MII control regiser (for F001 bug)
+ *******************************************************************/
+int atl1e_phy_commit(struct atl1e_hw *hw)
+{
+ int ret_val;
+ u16 phy_data;
+
+ DEBUGFUNC("atl1e_phy_commit");
+
+ phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG;
+
+ ret_val = atl1e_write_phy_reg(hw, MII_BMCR, phy_data);
+ if (ret_val) {
+ u32 val;
+ int i;
+ /**************************************
+ * pcie serdes link may be down !
+ **************************************/
+ DEBUGOUT("Auto-Neg make pcie phy link down !");
+
+ for (i = 0; i < 25; i++) {
+ msec_delay(1);
+ val = AT_READ_REG(hw, REG_MDIO_CTRL);
+ if (!(val & (MDIO_START | MDIO_BUSY)))
+ break;
+ }
+
+ if (0 != (val & (MDIO_START | MDIO_BUSY))) {
+ AT_ERR("pcie linkdown at least for 25ms !\n");
+ return ret_val;
+ }
+
+ DEBUGOUT1("pcie linkup after %dms", i);
+ }
+ return AT_SUCCESS;
+}
+
+void set_mac_addr(struct atl1e_hw *hw)
+{
+ u32 value;
+ /*
+ * 00-0B-6A-F6-00-DC
+ * 0: 6AF600DC 1: 000B
+ * low dword
+ */
+ value = (((u32)hw->mac_addr[2]) << 24) |
+ (((u32)hw->mac_addr[3]) << 16) |
+ (((u32)hw->mac_addr[4]) << 8) |
+ (((u32)hw->mac_addr[5])) ;
+ AT_WRITE_REG_ARRAY(hw, REG_MAC_STA_ADDR, 0, value);
+ /* hight dword */
+ value = (((u32)hw->mac_addr[0]) << 8) |
+ (((u32)hw->mac_addr[1])) ;
+ AT_WRITE_REG_ARRAY(hw, REG_MAC_STA_ADDR, 1, value);
+}
+
+
+/**************** function about EEPROM ************************/
+/*
+ * check_eeprom_exist
+ * return 0 if eeprom exist
+ */
+int check_eeprom_exist(struct atl1e_hw *hw)
+{
+ u32 value;
+
+ value = AT_READ_REG(hw, REG_SPI_FLASH_CTRL);
+ if (value & SPI_FLASH_CTRL_EN_VPD) {
+ value &= ~SPI_FLASH_CTRL_EN_VPD;
+ AT_WRITE_REG(hw, REG_SPI_FLASH_CTRL, value);
+ }
+ value = AT_READ_REGW(hw, REG_PCIE_CAP_LIST);
+ return ((value & 0xFF00) == 0x6C00) ? 0 : 1;
+}
+
+/*
+ * get_permanent_address
+ * return 0 if get valid mac address,
+ */
+static int get_permanent_address(struct atl1e_hw *hw)
+{
+ u32 addr[2];
+ u32 i, control;
+ u16 reg_addr;
+ u8 eth_addr[ETH_ALEN];
+ bool key_valid;
+
+ if (is_valid_ether_addr(hw->perm_mac_addr))
+ return 0;
+
+ /* init */
+ addr[0] = addr[1] = 0;
+
+ if (!check_eeprom_exist(hw)) {
+ /* eeprom exist */
+ reg_addr = 0;
+ key_valid = false;
+ /* Read out all EEPROM content */
+ i = 0;
+ while (1) {
+ if (read_eeprom(hw, i+0, &control)) {
+ if (key_valid) {
+ if (reg_addr == REG_MAC_STA_ADDR)
+ addr[0] = control;
+ else if (reg_addr ==
+ (REG_MAC_STA_ADDR+4))
+ addr[1] = control;
+
+ key_valid = false;
+ } else if ((control & 0xff) == 0x5A) {
+ key_valid = true;
+ reg_addr = (u16)(control >> 16);
+ } else
+ break;
+ /*
+ * assume data end while encount
+ * an invalid KEYWORD
+ */
+ } else {
+ break; /* read error */
+ }
+ i += 4;
+ }
+
+ *(u32 *) &eth_addr[2] = swab32(addr[0]);
+ *(u16 *) &eth_addr[0] = swab16(*(u16 *) &addr[1]);
+
+ if (is_valid_ether_addr(eth_addr)) {
+ memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN);
+ return 0;
+ }
+ }
+
+ /* maybe MAC-address is from BIOS */
+ addr[0] = AT_READ_REG(hw, REG_MAC_STA_ADDR);
+ addr[1] = AT_READ_REG(hw, REG_MAC_STA_ADDR + 4);
+ *(u32 *) &eth_addr[2] = swab32(addr[0]);
+ *(u16 *) &eth_addr[0] = swab16(*(u16 *)&addr[1]);
+
+ if (is_valid_ether_addr(eth_addr)) {
+ memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN);
+ return 0;
+ }
+
+ return 1;
+}
+
+bool write_eeprom(struct atl1e_hw *hw, u32 offset, u32 value)
+{
+ return true;
+}
+
+bool read_eeprom(struct atl1e_hw *hw, u32 offset, u32 *p_value)
+{
+ int i;
+ u32 control;
+
+ if (offset & 3)
+ return false; /* address do not align */
+
+ AT_WRITE_REG(hw, REG_VPD_DATA, 0);
+ control = (offset & VPD_CAP_VPD_ADDR_MASK) << VPD_CAP_VPD_ADDR_SHIFT;
+ AT_WRITE_REG(hw, REG_VPD_CAP, control);
+
+ for (i = 0; i < 10; i++) {
+ msec_delay(2);
+ control = AT_READ_REG(hw, REG_VPD_CAP);
+ if (control & VPD_CAP_VPD_FLAG)
+ break;
+ }
+ if (control & VPD_CAP_VPD_FLAG) {
+ *p_value = AT_READ_REG(hw, REG_VPD_DATA);
+ return true;
+ }
+ return false; /* timeout */
+}
+
+void atl1e_force_ps(struct atl1e_hw *hw)
+{
+ AT_WRITE_REGW(hw, REG_GPHY_CTRL,
+ GPHY_CTRL_PW_WOL_DIS | GPHY_CTRL_EXT_RESET);
+}
--
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