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authorDave Liu <daveliu@freescale.com>2006-11-03 12:11:15 -0600
committerKim Phillips <kim.phillips@freescale.com>2006-11-03 19:42:21 -0600
commit7737d5c658c606f999dfbe3e86b0fed49e5c50ef (patch)
treed1bf347ba7f4292def53870ecfcba0a1dd4c6231 /drivers/qe/uec_phy.c
parent5f8204394e39bbe8cd9f08b8f8d145b6c01f7c73 (diff)
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mpc83xx: add QE ethernet support
this patch adds support for the QUICC Engine based UCC gigabit ethernet device.
Diffstat (limited to 'drivers/qe/uec_phy.c')
-rw-r--r--drivers/qe/uec_phy.c604
1 files changed, 604 insertions, 0 deletions
diff --git a/drivers/qe/uec_phy.c b/drivers/qe/uec_phy.c
new file mode 100644
index 0000000..fedf636
--- /dev/null
+++ b/drivers/qe/uec_phy.c
@@ -0,0 +1,604 @@
+/*
+ * 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 UEC_VERBOSE_DEBUG
+#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 write_phy_reg(struct eth_device *dev, int mii_id, int regnum, int value)
+{
+ uec_private_t *ugeth = (uec_private_t *)dev->priv;
+ uec_t *ug_regs;
+ enet_tbi_mii_reg_e mii_reg = (enet_tbi_mii_reg_e)regnum;
+ u32 tmp_reg;
+
+ ug_regs = ugeth->uec_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);
+
+ /* Wait till MII management write is complete */
+ while((in_be32(&ug_regs->miimind)) & MIIMIND_BUSY);
+
+ udelay(100000);
+}
+
+/* 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 read_phy_reg(struct eth_device *dev, int mii_id, int regnum)
+{
+ uec_private_t *ugeth = (uec_private_t *)dev->priv;
+ uec_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_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);
+
+ /* Perform an MII management read cycle */
+ out_be32(&ug_regs->miimcom, 0);
+ 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));
+
+ udelay(100000);
+
+ /* Read MII management status */
+ value = (u16)in_be32(&ug_regs->miimstat);
+ if(value == 0xffff)
+ ugphy_warn("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;
+
+ /* Do a fake read */
+ phy_read(mii_info, PHY_BMSR);
+
+ /* Read link and autonegotiation status */
+ status = phy_read(mii_info, PHY_BMSR);
+ if ((status & PHY_BMSR_LS) == 0)
+ mii_info->link = 0;
+ else
+ mii_info->link = 1;
+
+ /* If we are autonegotiating, and not done,
+ * return an error */
+ if (mii_info->autoneg && !(status & PHY_BMSR_AUTN_COMP))
+ return -EAGAIN;
+
+ 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, 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 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);
+#ifdef CONFIG_RMII_MODE
+ phy_write(mii_info, MII_DM9161_SCR, MII_DM9161_SCR_RMII_INIT);
+#else
+ phy_write(mii_info, MII_DM9161_SCR, MII_DM9161_SCR_INIT);
+#endif
+ config_genmii_advert(mii_info);
+ /* Start/restart aneg */
+ genmii_config_aneg(mii_info);
+ /* Delay to wait the aneg compeleted */
+ udelay(3000000);
+
+ 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_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 * 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 */