linux/drivers/net/ethernet/atheros/atl1c/atl1c_hw.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright(c) 2007 Atheros Corporation. All rights reserved.
 *
 * Derived from Intel e1000 driver
 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
 */
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/mii.h>
#include <linux/crc32.h>

#include "atl1c.h"

/*
 * check_eeprom_exist
 * return 1 if eeprom exist
 */
int atl1c_check_eeprom_exist(struct atl1c_hw *hw)
{ … }

void atl1c_hw_set_mac_addr(struct atl1c_hw *hw, u8 *mac_addr)
{ … }

/* read mac address from hardware register */
static bool atl1c_read_current_addr(struct atl1c_hw *hw, u8 *eth_addr)
{ … }

/*
 * atl1c_get_permanent_address
 * return 0 if get valid mac address,
 */
static int atl1c_get_permanent_address(struct atl1c_hw *hw)
{ … }

bool atl1c_read_eeprom(struct atl1c_hw *hw, u32 offset, u32 *p_value)
{ … }
/*
 * Reads the adapter's MAC address from the EEPROM
 *
 * hw - Struct containing variables accessed by shared code
 */
int atl1c_read_mac_addr(struct atl1c_hw *hw)
{ … }

/*
 * atl1c_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 atl1c_hash_mc_addr(struct atl1c_hw *hw, u8 *mc_addr)
{ … }

/*
 * 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 atl1c_hash_set(struct atl1c_hw *hw, u32 hash_value)
{ … }

/*
 * wait mdio module be idle
 * return true: idle
 *        false: still busy
 */
bool atl1c_wait_mdio_idle(struct atl1c_hw *hw)
{ … }

void atl1c_stop_phy_polling(struct atl1c_hw *hw)
{ … }

void atl1c_start_phy_polling(struct atl1c_hw *hw, u16 clk_sel)
{ … }


/*
 * atl1c_read_phy_core
 * core function to read register in PHY via MDIO control register.
 * ext: extension register (see IEEE 802.3)
 * dev: device address (see IEEE 802.3 DEVAD, PRTAD is fixed to 0)
 * reg: reg to read
 */
int atl1c_read_phy_core(struct atl1c_hw *hw, bool ext, u8 dev,
			u16 reg, u16 *phy_data)
{ … }

/*
 * atl1c_write_phy_core
 * core function to write to register in PHY via MDIO control register.
 * ext: extension register (see IEEE 802.3)
 * dev: device address (see IEEE 802.3 DEVAD, PRTAD is fixed to 0)
 * reg: reg to write
 */
int atl1c_write_phy_core(struct atl1c_hw *hw, bool ext, u8 dev,
			u16 reg, u16 phy_data)
{ … }

/*
 * 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 atl1c_read_phy_reg(struct atl1c_hw *hw, u16 reg_addr, u16 *phy_data)
{ … }

/*
 * 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 atl1c_write_phy_reg(struct atl1c_hw *hw, u32 reg_addr, u16 phy_data)
{ … }

/* read from PHY extension register */
int atl1c_read_phy_ext(struct atl1c_hw *hw, u8 dev_addr,
			u16 reg_addr, u16 *phy_data)
{ … }

/* write to PHY extension register */
int atl1c_write_phy_ext(struct atl1c_hw *hw, u8 dev_addr,
			u16 reg_addr, u16 phy_data)
{ … }

int atl1c_read_phy_dbg(struct atl1c_hw *hw, u16 reg_addr, u16 *phy_data)
{ … }

int atl1c_write_phy_dbg(struct atl1c_hw *hw, u16 reg_addr, u16 phy_data)
{ … }

/*
 * Configures PHY autoneg and flow control advertisement settings
 *
 * hw - Struct containing variables accessed by shared code
 */
static int atl1c_phy_setup_adv(struct atl1c_hw *hw)
{ … }

void atl1c_phy_disable(struct atl1c_hw *hw)
{ … }


int atl1c_phy_reset(struct atl1c_hw *hw)
{ … }

int atl1c_phy_init(struct atl1c_hw *hw)
{ … }

bool atl1c_get_link_status(struct atl1c_hw *hw)
{ … }

/*
 * 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 atl1c_get_speed_and_duplex(struct atl1c_hw *hw, u16 *speed, u16 *duplex)
{ … }

/* select one link mode to get lower power consumption */
int atl1c_phy_to_ps_link(struct atl1c_hw *hw)
{ … }

int atl1c_restart_autoneg(struct atl1c_hw *hw)
{ … }

int atl1c_power_saving(struct atl1c_hw *hw, u32 wufc)
{ … }


/* configure phy after Link change Event */
void atl1c_post_phy_linkchg(struct atl1c_hw *hw, u16 link_speed)
{ … }