mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 04:35:17 +07:00
94724d102c
When using fiber port, the phy cannot report it's auto negotiation state, driver should always report auto negotiation is done when using fiber port. Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
136 lines
3.2 KiB
C
136 lines
3.2 KiB
C
/*
|
|
* Driver for Teranetics PHY
|
|
*
|
|
* Author: Shaohui Xie <Shaohui.Xie@freescale.com>
|
|
*
|
|
* Copyright 2015 Freescale Semiconductor, Inc.
|
|
*
|
|
* This file is licensed under the terms of the GNU General Public License
|
|
* version 2. This program is licensed "as is" without any warranty of any
|
|
* kind, whether express or implied.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/mii.h>
|
|
#include <linux/ethtool.h>
|
|
#include <linux/mdio.h>
|
|
#include <linux/phy.h>
|
|
|
|
MODULE_DESCRIPTION("Teranetics PHY driver");
|
|
MODULE_AUTHOR("Shaohui Xie <Shaohui.Xie@freescale.com>");
|
|
MODULE_LICENSE("GPL v2");
|
|
|
|
#define PHY_ID_TN2020 0x00a19410
|
|
#define MDIO_PHYXS_LNSTAT_SYNC0 0x0001
|
|
#define MDIO_PHYXS_LNSTAT_SYNC1 0x0002
|
|
#define MDIO_PHYXS_LNSTAT_SYNC2 0x0004
|
|
#define MDIO_PHYXS_LNSTAT_SYNC3 0x0008
|
|
#define MDIO_PHYXS_LNSTAT_ALIGN 0x1000
|
|
|
|
#define MDIO_PHYXS_LANE_READY (MDIO_PHYXS_LNSTAT_SYNC0 | \
|
|
MDIO_PHYXS_LNSTAT_SYNC1 | \
|
|
MDIO_PHYXS_LNSTAT_SYNC2 | \
|
|
MDIO_PHYXS_LNSTAT_SYNC3 | \
|
|
MDIO_PHYXS_LNSTAT_ALIGN)
|
|
|
|
static int teranetics_config_init(struct phy_device *phydev)
|
|
{
|
|
phydev->supported = SUPPORTED_10000baseT_Full;
|
|
phydev->advertising = SUPPORTED_10000baseT_Full;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int teranetics_soft_reset(struct phy_device *phydev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int teranetics_aneg_done(struct phy_device *phydev)
|
|
{
|
|
int reg;
|
|
|
|
/* auto negotiation state can only be checked when using copper
|
|
* port, if using fiber port, just lie it's done.
|
|
*/
|
|
if (!phy_read_mmd(phydev, MDIO_MMD_VEND1, 93)) {
|
|
reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
|
|
return (reg < 0) ? reg : (reg & BMSR_ANEGCOMPLETE);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int teranetics_config_aneg(struct phy_device *phydev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int teranetics_read_status(struct phy_device *phydev)
|
|
{
|
|
int reg;
|
|
|
|
phydev->link = 1;
|
|
|
|
phydev->speed = SPEED_10000;
|
|
phydev->duplex = DUPLEX_FULL;
|
|
|
|
if (!phy_read_mmd(phydev, MDIO_MMD_VEND1, 93)) {
|
|
reg = phy_read_mmd(phydev, MDIO_MMD_PHYXS, MDIO_PHYXS_LNSTAT);
|
|
if (reg < 0 ||
|
|
!((reg & MDIO_PHYXS_LANE_READY) == MDIO_PHYXS_LANE_READY)) {
|
|
phydev->link = 0;
|
|
return 0;
|
|
}
|
|
|
|
reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
|
|
if (reg < 0 || !(reg & MDIO_STAT1_LSTATUS))
|
|
phydev->link = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int teranetics_match_phy_device(struct phy_device *phydev)
|
|
{
|
|
return phydev->c45_ids.device_ids[3] == PHY_ID_TN2020;
|
|
}
|
|
|
|
static struct phy_driver teranetics_driver[] = {
|
|
{
|
|
.phy_id = PHY_ID_TN2020,
|
|
.phy_id_mask = 0xffffffff,
|
|
.name = "Teranetics TN2020",
|
|
.soft_reset = teranetics_soft_reset,
|
|
.aneg_done = teranetics_aneg_done,
|
|
.config_init = teranetics_config_init,
|
|
.config_aneg = teranetics_config_aneg,
|
|
.read_status = teranetics_read_status,
|
|
.match_phy_device = teranetics_match_phy_device,
|
|
.driver = { .owner = THIS_MODULE,},
|
|
},
|
|
};
|
|
|
|
static int __init teranetics_init(void)
|
|
{
|
|
return phy_drivers_register(teranetics_driver,
|
|
ARRAY_SIZE(teranetics_driver));
|
|
}
|
|
|
|
static void __exit teranetics_exit(void)
|
|
{
|
|
return phy_drivers_unregister(teranetics_driver,
|
|
ARRAY_SIZE(teranetics_driver));
|
|
}
|
|
|
|
module_init(teranetics_init);
|
|
module_exit(teranetics_exit);
|
|
|
|
static struct mdio_device_id __maybe_unused teranetics_tbl[] = {
|
|
{ PHY_ID_TN2020, 0xffffffff },
|
|
{ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(mdio, teranetics_tbl);
|