608 lines
16 KiB
C
608 lines
16 KiB
C
/*
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* Copyright (C) 2005 Freescale Semiconductor, Inc.
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*
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* Author: Shlomi Gridish
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*
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* Description: UCC GETH Driver -- PHY handling
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* Driver for UEC on QE
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* Based on 8260_io/fcc_enet.c
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include "common.h"
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#include "net.h"
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#include "malloc.h"
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#include "asm/errno.h"
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#include "asm/immap_qe.h"
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#include "asm/io.h"
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#include "qe.h"
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#include "uccf.h"
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#include "uec.h"
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#include "uec_phy.h"
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#include "miiphy.h"
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#if defined(CONFIG_QE)
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#define UEC_VERBOSE_DEBUG
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#define ugphy_printk(format, arg...) \
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printf(format "\n", ## arg)
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#define ugphy_dbg(format, arg...) \
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ugphy_printk(format , ## arg)
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#define ugphy_err(format, arg...) \
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ugphy_printk(format , ## arg)
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#define ugphy_info(format, arg...) \
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ugphy_printk(format , ## arg)
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#define ugphy_warn(format, arg...) \
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ugphy_printk(format , ## arg)
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#ifdef UEC_VERBOSE_DEBUG
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#define ugphy_vdbg ugphy_dbg
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#else
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#define ugphy_vdbg(ugeth, fmt, args...) do { } while (0)
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#endif /* UEC_VERBOSE_DEBUG */
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static void config_genmii_advert (struct uec_mii_info *mii_info);
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static void genmii_setup_forced (struct uec_mii_info *mii_info);
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static void genmii_restart_aneg (struct uec_mii_info *mii_info);
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static int gbit_config_aneg (struct uec_mii_info *mii_info);
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static int genmii_config_aneg (struct uec_mii_info *mii_info);
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static int genmii_update_link (struct uec_mii_info *mii_info);
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static int genmii_read_status (struct uec_mii_info *mii_info);
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u16 phy_read (struct uec_mii_info *mii_info, u16 regnum);
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void phy_write (struct uec_mii_info *mii_info, u16 regnum, u16 val);
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/* Write value to the PHY for this device to the register at regnum, */
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/* waiting until the write is done before it returns. All PHY */
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/* configuration has to be done through the TSEC1 MIIM regs */
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void uec_write_phy_reg (struct eth_device *dev, int mii_id, int regnum, int value)
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{
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uec_private_t *ugeth = (uec_private_t *) dev->priv;
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uec_mii_t *ug_regs;
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enet_tbi_mii_reg_e mii_reg = (enet_tbi_mii_reg_e) regnum;
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u32 tmp_reg;
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ug_regs = ugeth->uec_mii_regs;
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/* Stop the MII management read cycle */
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out_be32 (&ug_regs->miimcom, 0);
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/* Setting up the MII Mangement Address Register */
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tmp_reg = ((u32) mii_id << MIIMADD_PHY_ADDRESS_SHIFT) | mii_reg;
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out_be32 (&ug_regs->miimadd, tmp_reg);
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/* Setting up the MII Mangement Control Register with the value */
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out_be32 (&ug_regs->miimcon, (u32) value);
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/* Wait till MII management write is complete */
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while ((in_be32 (&ug_regs->miimind)) & MIIMIND_BUSY);
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udelay (100000);
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}
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/* Reads from register regnum in the PHY for device dev, */
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/* returning the value. Clears miimcom first. All PHY */
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/* configuration has to be done through the TSEC1 MIIM regs */
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int uec_read_phy_reg (struct eth_device *dev, int mii_id, int regnum)
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{
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uec_private_t *ugeth = (uec_private_t *) dev->priv;
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uec_mii_t *ug_regs;
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enet_tbi_mii_reg_e mii_reg = (enet_tbi_mii_reg_e) regnum;
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u32 tmp_reg;
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u16 value;
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ug_regs = ugeth->uec_mii_regs;
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/* Setting up the MII Mangement Address Register */
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tmp_reg = ((u32) mii_id << MIIMADD_PHY_ADDRESS_SHIFT) | mii_reg;
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out_be32 (&ug_regs->miimadd, tmp_reg);
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/* Perform an MII management read cycle */
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out_be32 (&ug_regs->miimcom, 0);
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out_be32 (&ug_regs->miimcom, MIIMCOM_READ_CYCLE);
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/* Wait till MII management write is complete */
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while ((in_be32 (&ug_regs->miimind)) &
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(MIIMIND_NOT_VALID | MIIMIND_BUSY));
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udelay (100000);
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/* Read MII management status */
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value = (u16) in_be32 (&ug_regs->miimstat);
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if (value == 0xffff)
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ugphy_warn
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("read wrong value : mii_id %d,mii_reg %d, base %08x",
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mii_id, mii_reg, (u32) & (ug_regs->miimcfg));
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return (value);
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}
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void mii_clear_phy_interrupt (struct uec_mii_info *mii_info)
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{
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if (mii_info->phyinfo->ack_interrupt)
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mii_info->phyinfo->ack_interrupt (mii_info);
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}
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void mii_configure_phy_interrupt (struct uec_mii_info *mii_info,
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u32 interrupts)
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{
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mii_info->interrupts = interrupts;
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if (mii_info->phyinfo->config_intr)
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mii_info->phyinfo->config_intr (mii_info);
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}
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/* Writes MII_ADVERTISE with the appropriate values, after
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* sanitizing advertise to make sure only supported features
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* are advertised
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*/
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static void config_genmii_advert (struct uec_mii_info *mii_info)
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{
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u32 advertise;
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u16 adv;
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/* Only allow advertising what this PHY supports */
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mii_info->advertising &= mii_info->phyinfo->features;
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advertise = mii_info->advertising;
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/* Setup standard advertisement */
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adv = phy_read (mii_info, PHY_ANAR);
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adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
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if (advertise & ADVERTISED_10baseT_Half)
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adv |= ADVERTISE_10HALF;
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if (advertise & ADVERTISED_10baseT_Full)
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adv |= ADVERTISE_10FULL;
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if (advertise & ADVERTISED_100baseT_Half)
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adv |= ADVERTISE_100HALF;
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if (advertise & ADVERTISED_100baseT_Full)
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adv |= ADVERTISE_100FULL;
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phy_write (mii_info, PHY_ANAR, adv);
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}
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static void genmii_setup_forced (struct uec_mii_info *mii_info)
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{
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u16 ctrl;
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u32 features = mii_info->phyinfo->features;
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ctrl = phy_read (mii_info, PHY_BMCR);
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ctrl &= ~(PHY_BMCR_DPLX | PHY_BMCR_100_MBPS |
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PHY_BMCR_1000_MBPS | PHY_BMCR_AUTON);
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ctrl |= PHY_BMCR_RESET;
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switch (mii_info->speed) {
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case SPEED_1000:
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if (features & (SUPPORTED_1000baseT_Half
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| SUPPORTED_1000baseT_Full)) {
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ctrl |= PHY_BMCR_1000_MBPS;
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break;
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}
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mii_info->speed = SPEED_100;
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case SPEED_100:
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if (features & (SUPPORTED_100baseT_Half
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| SUPPORTED_100baseT_Full)) {
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ctrl |= PHY_BMCR_100_MBPS;
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break;
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}
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mii_info->speed = SPEED_10;
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case SPEED_10:
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if (features & (SUPPORTED_10baseT_Half
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| SUPPORTED_10baseT_Full))
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break;
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default: /* Unsupported speed! */
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ugphy_err ("%s: Bad speed!", mii_info->dev->name);
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break;
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}
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phy_write (mii_info, PHY_BMCR, ctrl);
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}
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/* Enable and Restart Autonegotiation */
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static void genmii_restart_aneg (struct uec_mii_info *mii_info)
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{
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u16 ctl;
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ctl = phy_read (mii_info, PHY_BMCR);
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ctl |= (PHY_BMCR_AUTON | PHY_BMCR_RST_NEG);
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phy_write (mii_info, PHY_BMCR, ctl);
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}
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static int gbit_config_aneg (struct uec_mii_info *mii_info)
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{
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u16 adv;
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u32 advertise;
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if (mii_info->autoneg) {
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/* Configure the ADVERTISE register */
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config_genmii_advert (mii_info);
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advertise = mii_info->advertising;
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adv = phy_read (mii_info, MII_1000BASETCONTROL);
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adv &= ~(MII_1000BASETCONTROL_FULLDUPLEXCAP |
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MII_1000BASETCONTROL_HALFDUPLEXCAP);
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if (advertise & SUPPORTED_1000baseT_Half)
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adv |= MII_1000BASETCONTROL_HALFDUPLEXCAP;
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if (advertise & SUPPORTED_1000baseT_Full)
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adv |= MII_1000BASETCONTROL_FULLDUPLEXCAP;
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phy_write (mii_info, MII_1000BASETCONTROL, adv);
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/* Start/Restart aneg */
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genmii_restart_aneg (mii_info);
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} else
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genmii_setup_forced (mii_info);
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return 0;
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}
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static int marvell_config_aneg (struct uec_mii_info *mii_info)
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{
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/* The Marvell PHY has an errata which requires
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* that certain registers get written in order
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* to restart autonegotiation */
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phy_write (mii_info, PHY_BMCR, PHY_BMCR_RESET);
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phy_write (mii_info, 0x1d, 0x1f);
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phy_write (mii_info, 0x1e, 0x200c);
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phy_write (mii_info, 0x1d, 0x5);
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phy_write (mii_info, 0x1e, 0);
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phy_write (mii_info, 0x1e, 0x100);
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gbit_config_aneg (mii_info);
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return 0;
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}
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static int genmii_config_aneg (struct uec_mii_info *mii_info)
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{
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if (mii_info->autoneg) {
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config_genmii_advert (mii_info);
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genmii_restart_aneg (mii_info);
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} else
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genmii_setup_forced (mii_info);
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return 0;
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}
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static int genmii_update_link (struct uec_mii_info *mii_info)
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{
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u16 status;
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/* Do a fake read */
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phy_read (mii_info, PHY_BMSR);
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/* Read link and autonegotiation status */
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status = phy_read (mii_info, PHY_BMSR);
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if ((status & PHY_BMSR_LS) == 0)
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mii_info->link = 0;
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else
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mii_info->link = 1;
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/* If we are autonegotiating, and not done,
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* return an error */
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if (mii_info->autoneg && !(status & PHY_BMSR_AUTN_COMP))
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return -EAGAIN;
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return 0;
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}
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static int genmii_read_status (struct uec_mii_info *mii_info)
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{
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u16 status;
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int err;
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/* Update the link, but return if there
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* was an error */
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err = genmii_update_link (mii_info);
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if (err)
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return err;
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if (mii_info->autoneg) {
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status = phy_read (mii_info, PHY_ANLPAR);
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if (status & (PHY_ANLPAR_10FD | PHY_ANLPAR_TXFD))
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mii_info->duplex = DUPLEX_FULL;
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else
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mii_info->duplex = DUPLEX_HALF;
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if (status & (PHY_ANLPAR_TXFD | PHY_ANLPAR_TX))
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mii_info->speed = SPEED_100;
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else
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mii_info->speed = SPEED_10;
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mii_info->pause = 0;
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}
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/* On non-aneg, we assume what we put in BMCR is the speed,
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* though magic-aneg shouldn't prevent this case from occurring
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*/
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return 0;
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}
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static int marvell_read_status (struct uec_mii_info *mii_info)
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{
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u16 status;
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int err;
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/* Update the link, but return if there
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* was an error */
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err = genmii_update_link (mii_info);
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if (err)
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return err;
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/* If the link is up, read the speed and duplex */
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/* If we aren't autonegotiating, assume speeds
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* are as set */
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if (mii_info->autoneg && mii_info->link) {
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int speed;
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status = phy_read (mii_info, MII_M1011_PHY_SPEC_STATUS);
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/* Get the duplexity */
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if (status & MII_M1011_PHY_SPEC_STATUS_FULLDUPLEX)
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mii_info->duplex = DUPLEX_FULL;
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else
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mii_info->duplex = DUPLEX_HALF;
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/* Get the speed */
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speed = status & MII_M1011_PHY_SPEC_STATUS_SPD_MASK;
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switch (speed) {
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case MII_M1011_PHY_SPEC_STATUS_1000:
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mii_info->speed = SPEED_1000;
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break;
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case MII_M1011_PHY_SPEC_STATUS_100:
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mii_info->speed = SPEED_100;
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break;
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default:
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mii_info->speed = SPEED_10;
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break;
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}
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mii_info->pause = 0;
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}
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return 0;
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}
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static int marvell_ack_interrupt (struct uec_mii_info *mii_info)
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{
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/* Clear the interrupts by reading the reg */
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phy_read (mii_info, MII_M1011_IEVENT);
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return 0;
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}
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static int marvell_config_intr (struct uec_mii_info *mii_info)
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{
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if (mii_info->interrupts == MII_INTERRUPT_ENABLED)
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phy_write (mii_info, MII_M1011_IMASK, MII_M1011_IMASK_INIT);
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else
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phy_write (mii_info, MII_M1011_IMASK, MII_M1011_IMASK_CLEAR);
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return 0;
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}
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static int dm9161_init (struct uec_mii_info *mii_info)
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{
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/* Reset the PHY */
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phy_write (mii_info, PHY_BMCR, phy_read (mii_info, PHY_BMCR) |
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PHY_BMCR_RESET);
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/* PHY and MAC connect */
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phy_write (mii_info, PHY_BMCR, phy_read (mii_info, PHY_BMCR) &
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~PHY_BMCR_ISO);
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#ifdef CONFIG_RMII_MODE
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phy_write (mii_info, MII_DM9161_SCR, MII_DM9161_SCR_RMII_INIT);
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#else
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phy_write (mii_info, MII_DM9161_SCR, MII_DM9161_SCR_INIT);
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#endif
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config_genmii_advert (mii_info);
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/* Start/restart aneg */
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genmii_config_aneg (mii_info);
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/* Delay to wait the aneg compeleted */
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udelay (3000000);
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return 0;
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}
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static int dm9161_config_aneg (struct uec_mii_info *mii_info)
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{
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return 0;
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}
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static int dm9161_read_status (struct uec_mii_info *mii_info)
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{
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u16 status;
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int err;
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/* Update the link, but return if there was an error */
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err = genmii_update_link (mii_info);
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if (err)
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return err;
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/* If the link is up, read the speed and duplex
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If we aren't autonegotiating assume speeds are as set */
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if (mii_info->autoneg && mii_info->link) {
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status = phy_read (mii_info, MII_DM9161_SCSR);
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if (status & (MII_DM9161_SCSR_100F | MII_DM9161_SCSR_100H))
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mii_info->speed = SPEED_100;
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else
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mii_info->speed = SPEED_10;
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if (status & (MII_DM9161_SCSR_100F | MII_DM9161_SCSR_10F))
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mii_info->duplex = DUPLEX_FULL;
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else
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mii_info->duplex = DUPLEX_HALF;
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}
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return 0;
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}
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static int dm9161_ack_interrupt (struct uec_mii_info *mii_info)
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{
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/* Clear the interrupt by reading the reg */
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phy_read (mii_info, MII_DM9161_INTR);
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return 0;
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}
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static int dm9161_config_intr (struct uec_mii_info *mii_info)
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{
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if (mii_info->interrupts == MII_INTERRUPT_ENABLED)
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phy_write (mii_info, MII_DM9161_INTR, MII_DM9161_INTR_INIT);
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else
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phy_write (mii_info, MII_DM9161_INTR, MII_DM9161_INTR_STOP);
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return 0;
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}
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static void dm9161_close (struct uec_mii_info *mii_info)
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{
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}
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static struct phy_info phy_info_dm9161 = {
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.phy_id = 0x0181b880,
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.phy_id_mask = 0x0ffffff0,
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.name = "Davicom DM9161E",
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.init = dm9161_init,
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.config_aneg = dm9161_config_aneg,
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.read_status = dm9161_read_status,
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.close = dm9161_close,
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};
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static struct phy_info phy_info_dm9161a = {
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.phy_id = 0x0181b8a0,
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.phy_id_mask = 0x0ffffff0,
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.name = "Davicom DM9161A",
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.features = MII_BASIC_FEATURES,
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|
.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_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_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;
|
|
|
|
if (!uec->mii_info) {
|
|
printf ("%s: the PHY not intialized\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);
|
|
}
|
|
}
|
|
|
|
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 */
|