mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 08:16:49 +07:00
195 lines
4.2 KiB
C
195 lines
4.2 KiB
C
/*
|
|
* drivers/net/phy/davicom.c
|
|
*
|
|
* Driver for Davicom PHYs
|
|
*
|
|
* Author: Andy Fleming
|
|
*
|
|
* Copyright (c) 2004 Freescale Semiconductor, Inc.
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
#include <linux/config.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/string.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/unistd.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/init.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/etherdevice.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/module.h>
|
|
#include <linux/mii.h>
|
|
#include <linux/ethtool.h>
|
|
#include <linux/phy.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/uaccess.h>
|
|
|
|
#define MII_DM9161_SCR 0x10
|
|
#define MII_DM9161_SCR_INIT 0x0610
|
|
|
|
/* DM9161 Interrupt Register */
|
|
#define MII_DM9161_INTR 0x15
|
|
#define MII_DM9161_INTR_PEND 0x8000
|
|
#define MII_DM9161_INTR_DPLX_MASK 0x0800
|
|
#define MII_DM9161_INTR_SPD_MASK 0x0400
|
|
#define MII_DM9161_INTR_LINK_MASK 0x0200
|
|
#define MII_DM9161_INTR_MASK 0x0100
|
|
#define MII_DM9161_INTR_DPLX_CHANGE 0x0010
|
|
#define MII_DM9161_INTR_SPD_CHANGE 0x0008
|
|
#define MII_DM9161_INTR_LINK_CHANGE 0x0004
|
|
#define MII_DM9161_INTR_INIT 0x0000
|
|
#define MII_DM9161_INTR_STOP \
|
|
(MII_DM9161_INTR_DPLX_MASK | MII_DM9161_INTR_SPD_MASK \
|
|
| MII_DM9161_INTR_LINK_MASK | MII_DM9161_INTR_MASK)
|
|
|
|
/* DM9161 10BT Configuration/Status */
|
|
#define MII_DM9161_10BTCSR 0x12
|
|
#define MII_DM9161_10BTCSR_INIT 0x7800
|
|
|
|
MODULE_DESCRIPTION("Davicom PHY driver");
|
|
MODULE_AUTHOR("Andy Fleming");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
|
#define DM9161_DELAY 1
|
|
static int dm9161_config_intr(struct phy_device *phydev)
|
|
{
|
|
int temp;
|
|
|
|
temp = phy_read(phydev, MII_DM9161_INTR);
|
|
|
|
if (temp < 0)
|
|
return temp;
|
|
|
|
if(PHY_INTERRUPT_ENABLED == phydev->interrupts )
|
|
temp &= ~(MII_DM9161_INTR_STOP);
|
|
else
|
|
temp |= MII_DM9161_INTR_STOP;
|
|
|
|
temp = phy_write(phydev, MII_DM9161_INTR, temp);
|
|
|
|
return temp;
|
|
}
|
|
|
|
static int dm9161_config_aneg(struct phy_device *phydev)
|
|
{
|
|
int err;
|
|
|
|
/* Isolate the PHY */
|
|
err = phy_write(phydev, MII_BMCR, BMCR_ISOLATE);
|
|
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* Configure the new settings */
|
|
err = genphy_config_aneg(phydev);
|
|
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dm9161_config_init(struct phy_device *phydev)
|
|
{
|
|
int err;
|
|
|
|
/* Isolate the PHY */
|
|
err = phy_write(phydev, MII_BMCR, BMCR_ISOLATE);
|
|
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* Do not bypass the scrambler/descrambler */
|
|
err = phy_write(phydev, MII_DM9161_SCR, MII_DM9161_SCR_INIT);
|
|
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* Clear 10BTCSR to default */
|
|
err = phy_write(phydev, MII_DM9161_10BTCSR, MII_DM9161_10BTCSR_INIT);
|
|
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* Reconnect the PHY, and enable Autonegotiation */
|
|
err = phy_write(phydev, MII_BMCR, BMCR_ANENABLE);
|
|
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dm9161_ack_interrupt(struct phy_device *phydev)
|
|
{
|
|
int err = phy_read(phydev, MII_DM9161_INTR);
|
|
|
|
return (err < 0) ? err : 0;
|
|
}
|
|
|
|
static struct phy_driver dm9161_driver = {
|
|
.phy_id = 0x0181b880,
|
|
.name = "Davicom DM9161E",
|
|
.phy_id_mask = 0x0ffffff0,
|
|
.features = PHY_BASIC_FEATURES,
|
|
.config_init = dm9161_config_init,
|
|
.config_aneg = dm9161_config_aneg,
|
|
.read_status = genphy_read_status,
|
|
.driver = { .owner = THIS_MODULE,},
|
|
};
|
|
|
|
static struct phy_driver dm9131_driver = {
|
|
.phy_id = 0x00181b80,
|
|
.name = "Davicom DM9131",
|
|
.phy_id_mask = 0x0ffffff0,
|
|
.features = PHY_BASIC_FEATURES,
|
|
.flags = PHY_HAS_INTERRUPT,
|
|
.config_aneg = genphy_config_aneg,
|
|
.read_status = genphy_read_status,
|
|
.ack_interrupt = dm9161_ack_interrupt,
|
|
.config_intr = dm9161_config_intr,
|
|
.driver = { .owner = THIS_MODULE,},
|
|
};
|
|
|
|
static int __init davicom_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = phy_driver_register(&dm9161_driver);
|
|
if (ret)
|
|
goto err1;
|
|
|
|
ret = phy_driver_register(&dm9131_driver);
|
|
if (ret)
|
|
goto err2;
|
|
return 0;
|
|
|
|
err2:
|
|
phy_driver_unregister(&dm9161_driver);
|
|
err1:
|
|
return ret;
|
|
}
|
|
|
|
static void __exit davicom_exit(void)
|
|
{
|
|
phy_driver_unregister(&dm9161_driver);
|
|
phy_driver_unregister(&dm9131_driver);
|
|
}
|
|
|
|
module_init(davicom_init);
|
|
module_exit(davicom_exit);
|