u-boot/drivers/qe/uec_phy.c
Anton Vorontsov 300615dc5d uec: add support for Broadcom BCM5481 Gigabit PHY
This patch adds basic support for Broadcom BCM5481 PHY.

RXD-RXC delay quirk comes from MPC8360E-RDK BSP source, author is
Peter Barada <peterb@logicpd.com>.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
2008-03-25 19:16:46 -05:00

680 lines
17 KiB
C

/*
* Copyright (C) 2005 Freescale Semiconductor, Inc.
*
* Author: Shlomi Gridish
*
* Description: UCC GETH Driver -- PHY handling
* Driver for UEC on QE
* Based on 8260_io/fcc_enet.c
*
* 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 "common.h"
#include "net.h"
#include "malloc.h"
#include "asm/errno.h"
#include "asm/immap_qe.h"
#include "asm/io.h"
#include "qe.h"
#include "uccf.h"
#include "uec.h"
#include "uec_phy.h"
#include "miiphy.h"
#if defined(CONFIG_QE)
#define ugphy_printk(format, arg...) \
printf(format "\n", ## arg)
#define ugphy_dbg(format, arg...) \
ugphy_printk(format , ## arg)
#define ugphy_err(format, arg...) \
ugphy_printk(format , ## arg)
#define ugphy_info(format, arg...) \
ugphy_printk(format , ## arg)
#define ugphy_warn(format, arg...) \
ugphy_printk(format , ## arg)
#ifdef UEC_VERBOSE_DEBUG
#define ugphy_vdbg ugphy_dbg
#else
#define ugphy_vdbg(ugeth, fmt, args...) do { } while (0)
#endif /* UEC_VERBOSE_DEBUG */
static void config_genmii_advert (struct uec_mii_info *mii_info);
static void genmii_setup_forced (struct uec_mii_info *mii_info);
static void genmii_restart_aneg (struct uec_mii_info *mii_info);
static int gbit_config_aneg (struct uec_mii_info *mii_info);
static int genmii_config_aneg (struct uec_mii_info *mii_info);
static int genmii_update_link (struct uec_mii_info *mii_info);
static int genmii_read_status (struct uec_mii_info *mii_info);
u16 phy_read (struct uec_mii_info *mii_info, u16 regnum);
void phy_write (struct uec_mii_info *mii_info, u16 regnum, u16 val);
/* Write value to the PHY for this device to the register at regnum, */
/* waiting until the write is done before it returns. All PHY */
/* configuration has to be done through the TSEC1 MIIM regs */
void uec_write_phy_reg (struct eth_device *dev, int mii_id, int regnum, int value)
{
uec_private_t *ugeth = (uec_private_t *) dev->priv;
uec_mii_t *ug_regs;
enet_tbi_mii_reg_e mii_reg = (enet_tbi_mii_reg_e) regnum;
u32 tmp_reg;
ug_regs = ugeth->uec_mii_regs;
/* Stop the MII management read cycle */
out_be32 (&ug_regs->miimcom, 0);
/* Setting up the MII Mangement Address Register */
tmp_reg = ((u32) mii_id << MIIMADD_PHY_ADDRESS_SHIFT) | mii_reg;
out_be32 (&ug_regs->miimadd, tmp_reg);
/* Setting up the MII Mangement Control Register with the value */
out_be32 (&ug_regs->miimcon, (u32) value);
sync();
/* Wait till MII management write is complete */
while ((in_be32 (&ug_regs->miimind)) & MIIMIND_BUSY);
}
/* Reads from register regnum in the PHY for device dev, */
/* returning the value. Clears miimcom first. All PHY */
/* configuration has to be done through the TSEC1 MIIM regs */
int uec_read_phy_reg (struct eth_device *dev, int mii_id, int regnum)
{
uec_private_t *ugeth = (uec_private_t *) dev->priv;
uec_mii_t *ug_regs;
enet_tbi_mii_reg_e mii_reg = (enet_tbi_mii_reg_e) regnum;
u32 tmp_reg;
u16 value;
ug_regs = ugeth->uec_mii_regs;
/* Setting up the MII Mangement Address Register */
tmp_reg = ((u32) mii_id << MIIMADD_PHY_ADDRESS_SHIFT) | mii_reg;
out_be32 (&ug_regs->miimadd, tmp_reg);
/* clear MII management command cycle */
out_be32 (&ug_regs->miimcom, 0);
sync();
/* Perform an MII management read cycle */
out_be32 (&ug_regs->miimcom, MIIMCOM_READ_CYCLE);
/* Wait till MII management write is complete */
while ((in_be32 (&ug_regs->miimind)) &
(MIIMIND_NOT_VALID | MIIMIND_BUSY));
/* Read MII management status */
value = (u16) in_be32 (&ug_regs->miimstat);
if (value == 0xffff)
ugphy_vdbg
("read wrong value : mii_id %d,mii_reg %d, base %08x",
mii_id, mii_reg, (u32) & (ug_regs->miimcfg));
return (value);
}
void mii_clear_phy_interrupt (struct uec_mii_info *mii_info)
{
if (mii_info->phyinfo->ack_interrupt)
mii_info->phyinfo->ack_interrupt (mii_info);
}
void mii_configure_phy_interrupt (struct uec_mii_info *mii_info,
u32 interrupts)
{
mii_info->interrupts = interrupts;
if (mii_info->phyinfo->config_intr)
mii_info->phyinfo->config_intr (mii_info);
}
/* Writes MII_ADVERTISE with the appropriate values, after
* sanitizing advertise to make sure only supported features
* are advertised
*/
static void config_genmii_advert (struct uec_mii_info *mii_info)
{
u32 advertise;
u16 adv;
/* Only allow advertising what this PHY supports */
mii_info->advertising &= mii_info->phyinfo->features;
advertise = mii_info->advertising;
/* Setup standard advertisement */
adv = phy_read (mii_info, PHY_ANAR);
adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
if (advertise & ADVERTISED_10baseT_Half)
adv |= ADVERTISE_10HALF;
if (advertise & ADVERTISED_10baseT_Full)
adv |= ADVERTISE_10FULL;
if (advertise & ADVERTISED_100baseT_Half)
adv |= ADVERTISE_100HALF;
if (advertise & ADVERTISED_100baseT_Full)
adv |= ADVERTISE_100FULL;
phy_write (mii_info, PHY_ANAR, adv);
}
static void genmii_setup_forced (struct uec_mii_info *mii_info)
{
u16 ctrl;
u32 features = mii_info->phyinfo->features;
ctrl = phy_read (mii_info, PHY_BMCR);
ctrl &= ~(PHY_BMCR_DPLX | PHY_BMCR_100_MBPS |
PHY_BMCR_1000_MBPS | PHY_BMCR_AUTON);
ctrl |= PHY_BMCR_RESET;
switch (mii_info->speed) {
case SPEED_1000:
if (features & (SUPPORTED_1000baseT_Half
| SUPPORTED_1000baseT_Full)) {
ctrl |= PHY_BMCR_1000_MBPS;
break;
}
mii_info->speed = SPEED_100;
case SPEED_100:
if (features & (SUPPORTED_100baseT_Half
| SUPPORTED_100baseT_Full)) {
ctrl |= PHY_BMCR_100_MBPS;
break;
}
mii_info->speed = SPEED_10;
case SPEED_10:
if (features & (SUPPORTED_10baseT_Half
| SUPPORTED_10baseT_Full))
break;
default: /* Unsupported speed! */
ugphy_err ("%s: Bad speed!", mii_info->dev->name);
break;
}
phy_write (mii_info, PHY_BMCR, ctrl);
}
/* Enable and Restart Autonegotiation */
static void genmii_restart_aneg (struct uec_mii_info *mii_info)
{
u16 ctl;
ctl = phy_read (mii_info, PHY_BMCR);
ctl |= (PHY_BMCR_AUTON | PHY_BMCR_RST_NEG);
phy_write (mii_info, PHY_BMCR, ctl);
}
static int gbit_config_aneg (struct uec_mii_info *mii_info)
{
u16 adv;
u32 advertise;
if (mii_info->autoneg) {
/* Configure the ADVERTISE register */
config_genmii_advert (mii_info);
advertise = mii_info->advertising;
adv = phy_read (mii_info, MII_1000BASETCONTROL);
adv &= ~(MII_1000BASETCONTROL_FULLDUPLEXCAP |
MII_1000BASETCONTROL_HALFDUPLEXCAP);
if (advertise & SUPPORTED_1000baseT_Half)
adv |= MII_1000BASETCONTROL_HALFDUPLEXCAP;
if (advertise & SUPPORTED_1000baseT_Full)
adv |= MII_1000BASETCONTROL_FULLDUPLEXCAP;
phy_write (mii_info, MII_1000BASETCONTROL, adv);
/* Start/Restart aneg */
genmii_restart_aneg (mii_info);
} else
genmii_setup_forced (mii_info);
return 0;
}
static int marvell_config_aneg (struct uec_mii_info *mii_info)
{
/* The Marvell PHY has an errata which requires
* that certain registers get written in order
* to restart autonegotiation */
phy_write (mii_info, PHY_BMCR, PHY_BMCR_RESET);
phy_write (mii_info, 0x1d, 0x1f);
phy_write (mii_info, 0x1e, 0x200c);
phy_write (mii_info, 0x1d, 0x5);
phy_write (mii_info, 0x1e, 0);
phy_write (mii_info, 0x1e, 0x100);
gbit_config_aneg (mii_info);
return 0;
}
static int genmii_config_aneg (struct uec_mii_info *mii_info)
{
if (mii_info->autoneg) {
config_genmii_advert (mii_info);
genmii_restart_aneg (mii_info);
} else
genmii_setup_forced (mii_info);
return 0;
}
static int genmii_update_link (struct uec_mii_info *mii_info)
{
u16 status;
/* Status is read once to clear old link state */
phy_read (mii_info, PHY_BMSR);
/*
* Wait if the link is up, and autonegotiation is in progress
* (ie - we're capable and it's not done)
*/
status = phy_read(mii_info, PHY_BMSR);
if ((status & PHY_BMSR_LS) && (status & PHY_BMSR_AUTN_ABLE)
&& !(status & PHY_BMSR_AUTN_COMP)) {
int i = 0;
while (!(status & PHY_BMSR_AUTN_COMP)) {
/*
* Timeout reached ?
*/
if (i > UGETH_AN_TIMEOUT) {
mii_info->link = 0;
return 0;
}
i++;
udelay(1000); /* 1 ms */
status = phy_read(mii_info, PHY_BMSR);
}
mii_info->link = 1;
udelay(500000); /* another 500 ms (results in faster booting) */
} else {
if (status & PHY_BMSR_LS)
mii_info->link = 1;
else
mii_info->link = 0;
}
return 0;
}
static int genmii_read_status (struct uec_mii_info *mii_info)
{
u16 status;
int err;
/* Update the link, but return if there
* was an error */
err = genmii_update_link (mii_info);
if (err)
return err;
if (mii_info->autoneg) {
status = phy_read(mii_info, MII_1000BASETSTATUS);
if (status & (LPA_1000FULL | LPA_1000HALF)) {
mii_info->speed = SPEED_1000;
if (status & LPA_1000FULL)
mii_info->duplex = DUPLEX_FULL;
else
mii_info->duplex = DUPLEX_HALF;
} else {
status = phy_read(mii_info, PHY_ANLPAR);
if (status & (PHY_ANLPAR_10FD | PHY_ANLPAR_TXFD))
mii_info->duplex = DUPLEX_FULL;
else
mii_info->duplex = DUPLEX_HALF;
if (status & (PHY_ANLPAR_TXFD | PHY_ANLPAR_TX))
mii_info->speed = SPEED_100;
else
mii_info->speed = SPEED_10;
}
mii_info->pause = 0;
}
/* On non-aneg, we assume what we put in BMCR is the speed,
* though magic-aneg shouldn't prevent this case from occurring
*/
return 0;
}
static int bcm_init(struct uec_mii_info *mii_info)
{
struct eth_device *edev = mii_info->dev;
uec_private_t *uec = edev->priv;
gbit_config_aneg(mii_info);
if (uec->uec_info->enet_interface == ENET_1000_RGMII_RXID) {
u16 val;
int cnt = 50;
/* Wait for aneg to complete. */
do
val = phy_read(mii_info, PHY_BMSR);
while (--cnt && !(val & PHY_BMSR_AUTN_COMP));
/* Set RDX clk delay. */
phy_write(mii_info, 0x18, 0x7 | (7 << 12));
val = phy_read(mii_info, 0x18);
/* Set RDX-RXC skew. */
val |= (1 << 8);
val |= (7 | (7 << 12));
/* Write bits 14:0. */
val |= (1 << 15);
phy_write(mii_info, 0x18, val);
}
return 0;
}
static int marvell_read_status (struct uec_mii_info *mii_info)
{
u16 status;
int err;
/* Update the link, but return if there
* was an error */
err = genmii_update_link (mii_info);
if (err)
return err;
/* If the link is up, read the speed and duplex */
/* If we aren't autonegotiating, assume speeds
* are as set */
if (mii_info->autoneg && mii_info->link) {
int speed;
status = phy_read (mii_info, MII_M1011_PHY_SPEC_STATUS);
/* Get the duplexity */
if (status & MII_M1011_PHY_SPEC_STATUS_FULLDUPLEX)
mii_info->duplex = DUPLEX_FULL;
else
mii_info->duplex = DUPLEX_HALF;
/* Get the speed */
speed = status & MII_M1011_PHY_SPEC_STATUS_SPD_MASK;
switch (speed) {
case MII_M1011_PHY_SPEC_STATUS_1000:
mii_info->speed = SPEED_1000;
break;
case MII_M1011_PHY_SPEC_STATUS_100:
mii_info->speed = SPEED_100;
break;
default:
mii_info->speed = SPEED_10;
break;
}
mii_info->pause = 0;
}
return 0;
}
static int marvell_ack_interrupt (struct uec_mii_info *mii_info)
{
/* Clear the interrupts by reading the reg */
phy_read (mii_info, MII_M1011_IEVENT);
return 0;
}
static int marvell_config_intr (struct uec_mii_info *mii_info)
{
if (mii_info->interrupts == MII_INTERRUPT_ENABLED)
phy_write (mii_info, MII_M1011_IMASK, MII_M1011_IMASK_INIT);
else
phy_write (mii_info, MII_M1011_IMASK, MII_M1011_IMASK_CLEAR);
return 0;
}
static int dm9161_init (struct uec_mii_info *mii_info)
{
/* Reset the PHY */
phy_write (mii_info, PHY_BMCR, phy_read (mii_info, PHY_BMCR) |
PHY_BMCR_RESET);
/* PHY and MAC connect */
phy_write (mii_info, PHY_BMCR, phy_read (mii_info, PHY_BMCR) &
~PHY_BMCR_ISO);
phy_write (mii_info, MII_DM9161_SCR, MII_DM9161_SCR_INIT);
config_genmii_advert (mii_info);
/* Start/restart aneg */
genmii_config_aneg (mii_info);
return 0;
}
static int dm9161_config_aneg (struct uec_mii_info *mii_info)
{
return 0;
}
static int dm9161_read_status (struct uec_mii_info *mii_info)
{
u16 status;
int err;
/* Update the link, but return if there was an error */
err = genmii_update_link (mii_info);
if (err)
return err;
/* If the link is up, read the speed and duplex
If we aren't autonegotiating assume speeds are as set */
if (mii_info->autoneg && mii_info->link) {
status = phy_read (mii_info, MII_DM9161_SCSR);
if (status & (MII_DM9161_SCSR_100F | MII_DM9161_SCSR_100H))
mii_info->speed = SPEED_100;
else
mii_info->speed = SPEED_10;
if (status & (MII_DM9161_SCSR_100F | MII_DM9161_SCSR_10F))
mii_info->duplex = DUPLEX_FULL;
else
mii_info->duplex = DUPLEX_HALF;
}
return 0;
}
static int dm9161_ack_interrupt (struct uec_mii_info *mii_info)
{
/* Clear the interrupt by reading the reg */
phy_read (mii_info, MII_DM9161_INTR);
return 0;
}
static int dm9161_config_intr (struct uec_mii_info *mii_info)
{
if (mii_info->interrupts == MII_INTERRUPT_ENABLED)
phy_write (mii_info, MII_DM9161_INTR, MII_DM9161_INTR_INIT);
else
phy_write (mii_info, MII_DM9161_INTR, MII_DM9161_INTR_STOP);
return 0;
}
static void dm9161_close (struct uec_mii_info *mii_info)
{
}
static struct phy_info phy_info_dm9161 = {
.phy_id = 0x0181b880,
.phy_id_mask = 0x0ffffff0,
.name = "Davicom DM9161E",
.init = dm9161_init,
.config_aneg = dm9161_config_aneg,
.read_status = dm9161_read_status,
.close = dm9161_close,
};
static struct phy_info phy_info_dm9161a = {
.phy_id = 0x0181b8a0,
.phy_id_mask = 0x0ffffff0,
.name = "Davicom DM9161A",
.features = MII_BASIC_FEATURES,
.init = dm9161_init,
.config_aneg = dm9161_config_aneg,
.read_status = dm9161_read_status,
.ack_interrupt = dm9161_ack_interrupt,
.config_intr = dm9161_config_intr,
.close = dm9161_close,
};
static struct phy_info phy_info_marvell = {
.phy_id = 0x01410c00,
.phy_id_mask = 0xffffff00,
.name = "Marvell 88E11x1",
.features = MII_GBIT_FEATURES,
.config_aneg = &marvell_config_aneg,
.read_status = &marvell_read_status,
.ack_interrupt = &marvell_ack_interrupt,
.config_intr = &marvell_config_intr,
};
static struct phy_info phy_info_bcm5481 = {
.phy_id = 0x0143bca0,
.phy_id_mask = 0xffffff0,
.name = "Broadcom 5481",
.features = MII_GBIT_FEATURES,
.read_status = genmii_read_status,
.init = bcm_init,
};
static struct phy_info phy_info_genmii = {
.phy_id = 0x00000000,
.phy_id_mask = 0x00000000,
.name = "Generic MII",
.features = MII_BASIC_FEATURES,
.config_aneg = genmii_config_aneg,
.read_status = genmii_read_status,
};
static struct phy_info *phy_info[] = {
&phy_info_dm9161,
&phy_info_dm9161a,
&phy_info_marvell,
&phy_info_bcm5481,
&phy_info_genmii,
NULL
};
u16 phy_read (struct uec_mii_info *mii_info, u16 regnum)
{
return mii_info->mdio_read (mii_info->dev, mii_info->mii_id, regnum);
}
void phy_write (struct uec_mii_info *mii_info, u16 regnum, u16 val)
{
mii_info->mdio_write (mii_info->dev, mii_info->mii_id, regnum, val);
}
/* Use the PHY ID registers to determine what type of PHY is attached
* to device dev. return a struct phy_info structure describing that PHY
*/
struct phy_info *uec_get_phy_info (struct uec_mii_info *mii_info)
{
u16 phy_reg;
u32 phy_ID;
int i;
struct phy_info *theInfo = NULL;
/* Grab the bits from PHYIR1, and put them in the upper half */
phy_reg = phy_read (mii_info, PHY_PHYIDR1);
phy_ID = (phy_reg & 0xffff) << 16;
/* Grab the bits from PHYIR2, and put them in the lower half */
phy_reg = phy_read (mii_info, PHY_PHYIDR2);
phy_ID |= (phy_reg & 0xffff);
/* loop through all the known PHY types, and find one that */
/* matches the ID we read from the PHY. */
for (i = 0; phy_info[i]; i++)
if (phy_info[i]->phy_id ==
(phy_ID & phy_info[i]->phy_id_mask)) {
theInfo = phy_info[i];
break;
}
/* This shouldn't happen, as we have generic PHY support */
if (theInfo == NULL) {
ugphy_info ("UEC: PHY id %x is not supported!", phy_ID);
return NULL;
} else {
ugphy_info ("UEC: PHY is %s (%x)", theInfo->name, phy_ID);
}
return theInfo;
}
void marvell_phy_interface_mode (struct eth_device *dev,
enet_interface_e mode)
{
uec_private_t *uec = (uec_private_t *) dev->priv;
struct uec_mii_info *mii_info;
u16 status;
if (!uec->mii_info) {
printf ("%s: the PHY not initialized\n", __FUNCTION__);
return;
}
mii_info = uec->mii_info;
if (mode == ENET_100_RGMII) {
phy_write (mii_info, 0x00, 0x9140);
phy_write (mii_info, 0x1d, 0x001f);
phy_write (mii_info, 0x1e, 0x200c);
phy_write (mii_info, 0x1d, 0x0005);
phy_write (mii_info, 0x1e, 0x0000);
phy_write (mii_info, 0x1e, 0x0100);
phy_write (mii_info, 0x09, 0x0e00);
phy_write (mii_info, 0x04, 0x01e1);
phy_write (mii_info, 0x00, 0x9140);
phy_write (mii_info, 0x00, 0x1000);
udelay (100000);
phy_write (mii_info, 0x00, 0x2900);
phy_write (mii_info, 0x14, 0x0cd2);
phy_write (mii_info, 0x00, 0xa100);
phy_write (mii_info, 0x09, 0x0000);
phy_write (mii_info, 0x1b, 0x800b);
phy_write (mii_info, 0x04, 0x05e1);
phy_write (mii_info, 0x00, 0xa100);
phy_write (mii_info, 0x00, 0x2100);
udelay (1000000);
} else if (mode == ENET_10_RGMII) {
phy_write (mii_info, 0x14, 0x8e40);
phy_write (mii_info, 0x1b, 0x800b);
phy_write (mii_info, 0x14, 0x0c82);
phy_write (mii_info, 0x00, 0x8100);
udelay (1000000);
}
/* handle 88e1111 rev.B2 erratum 5.6 */
if (mii_info->autoneg) {
status = phy_read (mii_info, PHY_BMCR);
phy_write (mii_info, PHY_BMCR, status | PHY_BMCR_AUTON);
}
/* now the B2 will correctly report autoneg completion status */
}
void change_phy_interface_mode (struct eth_device *dev, enet_interface_e mode)
{
#ifdef CONFIG_PHY_MODE_NEED_CHANGE
marvell_phy_interface_mode (dev, mode);
#endif
}
#endif /* CONFIG_QE */