380 lines
11 KiB
C
380 lines
11 KiB
C
|
/*
|
||
|
|
* Driver for Vitesse PHYs
|
||
|
|
*
|
||
|
|
* Author: Kriston Carson
|
||
|
|
*
|
||
|
|
* Copyright (c) 2005, 2009, 2011 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/kernel.h>
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/mii.h>
|
||
|
|
#include <linux/ethtool.h>
|
||
|
|
#include <linux/phy.h>
|
||
|
|
|
||
|
|
/* Vitesse Extended Page Magic Register(s) */
|
||
|
|
#define MII_VSC82X4_EXT_PAGE_16E 0x10
|
||
|
|
#define MII_VSC82X4_EXT_PAGE_17E 0x11
|
||
|
|
#define MII_VSC82X4_EXT_PAGE_18E 0x12
|
||
|
|
|
||
|
|
/* Vitesse Extended Control Register 1 */
|
||
|
|
#define MII_VSC8244_EXT_CON1 0x17
|
||
|
|
#define MII_VSC8244_EXTCON1_INIT 0x0000
|
||
|
|
#define MII_VSC8244_EXTCON1_TX_SKEW_MASK 0x0c00
|
||
|
|
#define MII_VSC8244_EXTCON1_RX_SKEW_MASK 0x0300
|
||
|
|
#define MII_VSC8244_EXTCON1_TX_SKEW 0x0800
|
||
|
|
#define MII_VSC8244_EXTCON1_RX_SKEW 0x0200
|
||
|
|
|
||
|
|
/* Vitesse Interrupt Mask Register */
|
||
|
|
#define MII_VSC8244_IMASK 0x19
|
||
|
|
#define MII_VSC8244_IMASK_IEN 0x8000
|
||
|
|
#define MII_VSC8244_IMASK_SPEED 0x4000
|
||
|
|
#define MII_VSC8244_IMASK_LINK 0x2000
|
||
|
|
#define MII_VSC8244_IMASK_DUPLEX 0x1000
|
||
|
|
#define MII_VSC8244_IMASK_MASK 0xf000
|
||
|
|
|
||
|
|
#define MII_VSC8221_IMASK_MASK 0xa000
|
||
|
|
|
||
|
|
/* Vitesse Interrupt Status Register */
|
||
|
|
#define MII_VSC8244_ISTAT 0x1a
|
||
|
|
#define MII_VSC8244_ISTAT_STATUS 0x8000
|
||
|
|
#define MII_VSC8244_ISTAT_SPEED 0x4000
|
||
|
|
#define MII_VSC8244_ISTAT_LINK 0x2000
|
||
|
|
#define MII_VSC8244_ISTAT_DUPLEX 0x1000
|
||
|
|
|
||
|
|
/* Vitesse Auxiliary Control/Status Register */
|
||
|
|
#define MII_VSC8244_AUX_CONSTAT 0x1c
|
||
|
|
#define MII_VSC8244_AUXCONSTAT_INIT 0x0000
|
||
|
|
#define MII_VSC8244_AUXCONSTAT_DUPLEX 0x0020
|
||
|
|
#define MII_VSC8244_AUXCONSTAT_SPEED 0x0018
|
||
|
|
#define MII_VSC8244_AUXCONSTAT_GBIT 0x0010
|
||
|
|
#define MII_VSC8244_AUXCONSTAT_100 0x0008
|
||
|
|
|
||
|
|
#define MII_VSC8221_AUXCONSTAT_INIT 0x0004 /* need to set this bit? */
|
||
|
|
#define MII_VSC8221_AUXCONSTAT_RESERVED 0x0004
|
||
|
|
|
||
|
|
/* Vitesse Extended Page Access Register */
|
||
|
|
#define MII_VSC82X4_EXT_PAGE_ACCESS 0x1f
|
||
|
|
|
||
|
|
/* Vitesse VSC8601 Extended PHY Control Register 1 */
|
||
|
|
#define MII_VSC8601_EPHY_CTL 0x17
|
||
|
|
#define MII_VSC8601_EPHY_CTL_RGMII_SKEW (1 << 8)
|
||
|
|
|
||
|
|
#define PHY_ID_VSC8234 0x000fc620
|
||
|
|
#define PHY_ID_VSC8244 0x000fc6c0
|
||
|
|
#define PHY_ID_VSC8514 0x00070670
|
||
|
|
#define PHY_ID_VSC8572 0x000704d0
|
||
|
|
#define PHY_ID_VSC8574 0x000704a0
|
||
|
|
#define PHY_ID_VSC8601 0x00070420
|
||
|
|
#define PHY_ID_VSC8662 0x00070660
|
||
|
|
#define PHY_ID_VSC8221 0x000fc550
|
||
|
|
#define PHY_ID_VSC8211 0x000fc4b0
|
||
|
|
|
||
|
|
MODULE_DESCRIPTION("Vitesse PHY driver");
|
||
|
|
MODULE_AUTHOR("Kriston Carson");
|
||
|
|
MODULE_LICENSE("GPL");
|
||
|
|
|
||
|
|
static int vsc824x_add_skew(struct phy_device *phydev)
|
||
|
|
{
|
||
|
|
int err;
|
||
|
|
int extcon;
|
||
|
|
|
||
|
|
extcon = phy_read(phydev, MII_VSC8244_EXT_CON1);
|
||
|
|
|
||
|
|
if (extcon < 0)
|
||
|
|
return extcon;
|
||
|
|
|
||
|
|
extcon &= ~(MII_VSC8244_EXTCON1_TX_SKEW_MASK |
|
||
|
|
MII_VSC8244_EXTCON1_RX_SKEW_MASK);
|
||
|
|
|
||
|
|
extcon |= (MII_VSC8244_EXTCON1_TX_SKEW |
|
||
|
|
MII_VSC8244_EXTCON1_RX_SKEW);
|
||
|
|
|
||
|
|
err = phy_write(phydev, MII_VSC8244_EXT_CON1, extcon);
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int vsc824x_config_init(struct phy_device *phydev)
|
||
|
|
{
|
||
|
|
int err;
|
||
|
|
|
||
|
|
err = phy_write(phydev, MII_VSC8244_AUX_CONSTAT,
|
||
|
|
MII_VSC8244_AUXCONSTAT_INIT);
|
||
|
|
if (err < 0)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID)
|
||
|
|
err = vsc824x_add_skew(phydev);
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* This adds a skew for both TX and RX clocks, so the skew should only be
|
||
|
|
* applied to "rgmii-id" interfaces. It may not work as expected
|
||
|
|
* on "rgmii-txid", "rgmii-rxid" or "rgmii" interfaces. */
|
||
|
|
static int vsc8601_add_skew(struct phy_device *phydev)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
ret = phy_read(phydev, MII_VSC8601_EPHY_CTL);
|
||
|
|
if (ret < 0)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
ret |= MII_VSC8601_EPHY_CTL_RGMII_SKEW;
|
||
|
|
return phy_write(phydev, MII_VSC8601_EPHY_CTL, ret);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int vsc8601_config_init(struct phy_device *phydev)
|
||
|
|
{
|
||
|
|
int ret = 0;
|
||
|
|
|
||
|
|
if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID)
|
||
|
|
ret = vsc8601_add_skew(phydev);
|
||
|
|
|
||
|
|
if (ret < 0)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
return genphy_config_init(phydev);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int vsc824x_ack_interrupt(struct phy_device *phydev)
|
||
|
|
{
|
||
|
|
int err = 0;
|
||
|
|
|
||
|
|
/* Don't bother to ACK the interrupts if interrupts
|
||
|
|
* are disabled. The 824x cannot clear the interrupts
|
||
|
|
* if they are disabled.
|
||
|
|
*/
|
||
|
|
if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
|
||
|
|
err = phy_read(phydev, MII_VSC8244_ISTAT);
|
||
|
|
|
||
|
|
return (err < 0) ? err : 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int vsc82xx_config_intr(struct phy_device *phydev)
|
||
|
|
{
|
||
|
|
int err;
|
||
|
|
|
||
|
|
if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
|
||
|
|
err = phy_write(phydev, MII_VSC8244_IMASK,
|
||
|
|
(phydev->drv->phy_id == PHY_ID_VSC8234 ||
|
||
|
|
phydev->drv->phy_id == PHY_ID_VSC8244 ||
|
||
|
|
phydev->drv->phy_id == PHY_ID_VSC8514 ||
|
||
|
|
phydev->drv->phy_id == PHY_ID_VSC8572 ||
|
||
|
|
phydev->drv->phy_id == PHY_ID_VSC8574 ||
|
||
|
|
phydev->drv->phy_id == PHY_ID_VSC8601) ?
|
||
|
|
MII_VSC8244_IMASK_MASK :
|
||
|
|
MII_VSC8221_IMASK_MASK);
|
||
|
|
else {
|
||
|
|
/* The Vitesse PHY cannot clear the interrupt
|
||
|
|
* once it has disabled them, so we clear them first
|
||
|
|
*/
|
||
|
|
err = phy_read(phydev, MII_VSC8244_ISTAT);
|
||
|
|
|
||
|
|
if (err < 0)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
err = phy_write(phydev, MII_VSC8244_IMASK, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int vsc8221_config_init(struct phy_device *phydev)
|
||
|
|
{
|
||
|
|
int err;
|
||
|
|
|
||
|
|
err = phy_write(phydev, MII_VSC8244_AUX_CONSTAT,
|
||
|
|
MII_VSC8221_AUXCONSTAT_INIT);
|
||
|
|
return err;
|
||
|
|
|
||
|
|
/* Perhaps we should set EXT_CON1 based on the interface?
|
||
|
|
* Options are 802.3Z SerDes or SGMII
|
||
|
|
*/
|
||
|
|
}
|
||
|
|
|
||
|
|
/* vsc82x4_config_autocross_enable - Enable auto MDI/MDI-X for forced links
|
||
|
|
* @phydev: target phy_device struct
|
||
|
|
*
|
||
|
|
* Enable auto MDI/MDI-X when in 10/100 forced link speeds by writing
|
||
|
|
* special values in the VSC8234/VSC8244 extended reserved registers
|
||
|
|
*/
|
||
|
|
static int vsc82x4_config_autocross_enable(struct phy_device *phydev)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
if (phydev->autoneg == AUTONEG_ENABLE || phydev->speed > SPEED_100)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
/* map extended registers set 0x10 - 0x1e */
|
||
|
|
ret = phy_write(phydev, MII_VSC82X4_EXT_PAGE_ACCESS, 0x52b5);
|
||
|
|
if (ret >= 0)
|
||
|
|
ret = phy_write(phydev, MII_VSC82X4_EXT_PAGE_18E, 0x0012);
|
||
|
|
if (ret >= 0)
|
||
|
|
ret = phy_write(phydev, MII_VSC82X4_EXT_PAGE_17E, 0x2803);
|
||
|
|
if (ret >= 0)
|
||
|
|
ret = phy_write(phydev, MII_VSC82X4_EXT_PAGE_16E, 0x87fa);
|
||
|
|
/* map standard registers set 0x10 - 0x1e */
|
||
|
|
if (ret >= 0)
|
||
|
|
ret = phy_write(phydev, MII_VSC82X4_EXT_PAGE_ACCESS, 0x0000);
|
||
|
|
else
|
||
|
|
phy_write(phydev, MII_VSC82X4_EXT_PAGE_ACCESS, 0x0000);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* vsc82x4_config_aneg - restart auto-negotiation or write BMCR
|
||
|
|
* @phydev: target phy_device struct
|
||
|
|
*
|
||
|
|
* Description: If auto-negotiation is enabled, we configure the
|
||
|
|
* advertising, and then restart auto-negotiation. If it is not
|
||
|
|
* enabled, then we write the BMCR and also start the auto
|
||
|
|
* MDI/MDI-X feature
|
||
|
|
*/
|
||
|
|
static int vsc82x4_config_aneg(struct phy_device *phydev)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
/* Enable auto MDI/MDI-X when in 10/100 forced link speeds by
|
||
|
|
* writing special values in the VSC8234 extended reserved registers
|
||
|
|
*/
|
||
|
|
if (phydev->autoneg != AUTONEG_ENABLE && phydev->speed <= SPEED_100) {
|
||
|
|
ret = genphy_setup_forced(phydev);
|
||
|
|
|
||
|
|
if (ret < 0) /* error */
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
return vsc82x4_config_autocross_enable(phydev);
|
||
|
|
}
|
||
|
|
|
||
|
|
return genphy_config_aneg(phydev);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Vitesse 82xx */
|
||
|
|
static struct phy_driver vsc82xx_driver[] = {
|
||
|
|
{
|
||
|
|
.phy_id = PHY_ID_VSC8234,
|
||
|
|
.name = "Vitesse VSC8234",
|
||
|
|
.phy_id_mask = 0x000ffff0,
|
||
|
|
.features = PHY_GBIT_FEATURES,
|
||
|
|
.flags = PHY_HAS_INTERRUPT,
|
||
|
|
.config_init = &vsc824x_config_init,
|
||
|
|
.config_aneg = &vsc82x4_config_aneg,
|
||
|
|
.read_status = &genphy_read_status,
|
||
|
|
.ack_interrupt = &vsc824x_ack_interrupt,
|
||
|
|
.config_intr = &vsc82xx_config_intr,
|
||
|
|
}, {
|
||
|
|
.phy_id = PHY_ID_VSC8244,
|
||
|
|
.name = "Vitesse VSC8244",
|
||
|
|
.phy_id_mask = 0x000fffc0,
|
||
|
|
.features = PHY_GBIT_FEATURES,
|
||
|
|
.flags = PHY_HAS_INTERRUPT,
|
||
|
|
.config_init = &vsc824x_config_init,
|
||
|
|
.config_aneg = &vsc82x4_config_aneg,
|
||
|
|
.read_status = &genphy_read_status,
|
||
|
|
.ack_interrupt = &vsc824x_ack_interrupt,
|
||
|
|
.config_intr = &vsc82xx_config_intr,
|
||
|
|
}, {
|
||
|
|
.phy_id = PHY_ID_VSC8514,
|
||
|
|
.name = "Vitesse VSC8514",
|
||
|
|
.phy_id_mask = 0x000ffff0,
|
||
|
|
.features = PHY_GBIT_FEATURES,
|
||
|
|
.flags = PHY_HAS_INTERRUPT,
|
||
|
|
.config_init = &vsc824x_config_init,
|
||
|
|
.config_aneg = &vsc82x4_config_aneg,
|
||
|
|
.read_status = &genphy_read_status,
|
||
|
|
.ack_interrupt = &vsc824x_ack_interrupt,
|
||
|
|
.config_intr = &vsc82xx_config_intr,
|
||
|
|
}, {
|
||
|
|
.phy_id = PHY_ID_VSC8572,
|
||
|
|
.name = "Vitesse VSC8572",
|
||
|
|
.phy_id_mask = 0x000ffff0,
|
||
|
|
.features = PHY_GBIT_FEATURES,
|
||
|
|
.flags = PHY_HAS_INTERRUPT,
|
||
|
|
.config_init = &vsc824x_config_init,
|
||
|
|
.config_aneg = &vsc82x4_config_aneg,
|
||
|
|
.read_status = &genphy_read_status,
|
||
|
|
.ack_interrupt = &vsc824x_ack_interrupt,
|
||
|
|
.config_intr = &vsc82xx_config_intr,
|
||
|
|
}, {
|
||
|
|
.phy_id = PHY_ID_VSC8574,
|
||
|
|
.name = "Vitesse VSC8574",
|
||
|
|
.phy_id_mask = 0x000ffff0,
|
||
|
|
.features = PHY_GBIT_FEATURES,
|
||
|
|
.flags = PHY_HAS_INTERRUPT,
|
||
|
|
.config_init = &vsc824x_config_init,
|
||
|
|
.config_aneg = &vsc82x4_config_aneg,
|
||
|
|
.read_status = &genphy_read_status,
|
||
|
|
.ack_interrupt = &vsc824x_ack_interrupt,
|
||
|
|
.config_intr = &vsc82xx_config_intr,
|
||
|
|
}, {
|
||
|
|
.phy_id = PHY_ID_VSC8601,
|
||
|
|
.name = "Vitesse VSC8601",
|
||
|
|
.phy_id_mask = 0x000ffff0,
|
||
|
|
.features = PHY_GBIT_FEATURES,
|
||
|
|
.flags = PHY_HAS_INTERRUPT,
|
||
|
|
.config_init = &vsc8601_config_init,
|
||
|
|
.config_aneg = &genphy_config_aneg,
|
||
|
|
.read_status = &genphy_read_status,
|
||
|
|
.ack_interrupt = &vsc824x_ack_interrupt,
|
||
|
|
.config_intr = &vsc82xx_config_intr,
|
||
|
|
}, {
|
||
|
|
.phy_id = PHY_ID_VSC8662,
|
||
|
|
.name = "Vitesse VSC8662",
|
||
|
|
.phy_id_mask = 0x000ffff0,
|
||
|
|
.features = PHY_GBIT_FEATURES,
|
||
|
|
.flags = PHY_HAS_INTERRUPT,
|
||
|
|
.config_init = &vsc824x_config_init,
|
||
|
|
.config_aneg = &vsc82x4_config_aneg,
|
||
|
|
.read_status = &genphy_read_status,
|
||
|
|
.ack_interrupt = &vsc824x_ack_interrupt,
|
||
|
|
.config_intr = &vsc82xx_config_intr,
|
||
|
|
}, {
|
||
|
|
/* Vitesse 8221 */
|
||
|
|
.phy_id = PHY_ID_VSC8221,
|
||
|
|
.phy_id_mask = 0x000ffff0,
|
||
|
|
.name = "Vitesse VSC8221",
|
||
|
|
.features = PHY_GBIT_FEATURES,
|
||
|
|
.flags = PHY_HAS_INTERRUPT,
|
||
|
|
.config_init = &vsc8221_config_init,
|
||
|
|
.config_aneg = &genphy_config_aneg,
|
||
|
|
.read_status = &genphy_read_status,
|
||
|
|
.ack_interrupt = &vsc824x_ack_interrupt,
|
||
|
|
.config_intr = &vsc82xx_config_intr,
|
||
|
|
}, {
|
||
|
|
/* Vitesse 8211 */
|
||
|
|
.phy_id = PHY_ID_VSC8211,
|
||
|
|
.phy_id_mask = 0x000ffff0,
|
||
|
|
.name = "Vitesse VSC8211",
|
||
|
|
.features = PHY_GBIT_FEATURES,
|
||
|
|
.flags = PHY_HAS_INTERRUPT,
|
||
|
|
.config_init = &vsc8221_config_init,
|
||
|
|
.config_aneg = &genphy_config_aneg,
|
||
|
|
.read_status = &genphy_read_status,
|
||
|
|
.ack_interrupt = &vsc824x_ack_interrupt,
|
||
|
|
.config_intr = &vsc82xx_config_intr,
|
||
|
|
} };
|
||
|
|
|
||
|
|
module_phy_driver(vsc82xx_driver);
|
||
|
|
|
||
|
|
static struct mdio_device_id __maybe_unused vitesse_tbl[] = {
|
||
|
|
{ PHY_ID_VSC8234, 0x000ffff0 },
|
||
|
|
{ PHY_ID_VSC8244, 0x000fffc0 },
|
||
|
|
{ PHY_ID_VSC8514, 0x000ffff0 },
|
||
|
|
{ PHY_ID_VSC8572, 0x000ffff0 },
|
||
|
|
{ PHY_ID_VSC8574, 0x000ffff0 },
|
||
|
|
{ PHY_ID_VSC8662, 0x000ffff0 },
|
||
|
|
{ PHY_ID_VSC8221, 0x000ffff0 },
|
||
|
|
{ PHY_ID_VSC8211, 0x000ffff0 },
|
||
|
|
{ }
|
||
|
|
};
|
||
|
|
|
||
|
|
MODULE_DEVICE_TABLE(mdio, vitesse_tbl);
|