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Diffstat (limited to 'drivers/net/ibm_emac/ibm_emac_phy.c')
-rw-r--r--drivers/net/ibm_emac/ibm_emac_phy.c398
1 files changed, 0 insertions, 398 deletions
diff --git a/drivers/net/ibm_emac/ibm_emac_phy.c b/drivers/net/ibm_emac/ibm_emac_phy.c
deleted file mode 100644
index e57862b34ca..00000000000
--- a/drivers/net/ibm_emac/ibm_emac_phy.c
+++ /dev/null
@@ -1,398 +0,0 @@
-/*
- * drivers/net/ibm_emac/ibm_emac_phy.c
- *
- * Driver for PowerPC 4xx on-chip ethernet controller, PHY support.
- * Borrowed from sungem_phy.c, though I only kept the generic MII
- * driver for now.
- *
- * This file should be shared with other drivers or eventually
- * merged as the "low level" part of miilib
- *
- * (c) 2003, Benjamin Herrenscmidt (benh@kernel.crashing.org)
- * (c) 2004-2005, Eugene Surovegin <ebs@ebshome.net>
- *
- */
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/netdevice.h>
-#include <linux/mii.h>
-#include <linux/ethtool.h>
-#include <linux/delay.h>
-
-#include <asm/ocp.h>
-
-#include "ibm_emac_core.h"
-#include "ibm_emac_phy.h"
-
-static inline int phy_read(struct mii_phy *phy, int reg)
-{
- return phy->mdio_read(phy->dev, phy->address, reg);
-}
-
-static inline void phy_write(struct mii_phy *phy, int reg, int val)
-{
- phy->mdio_write(phy->dev, phy->address, reg, val);
-}
-
-/*
- * polls MII_BMCR until BMCR_RESET bit clears or operation times out.
- *
- * returns:
- * >= 0 => success, value in BMCR returned to caller
- * -EBUSY => failure, RESET bit never cleared
- * otherwise => failure, lower level PHY read failed
- */
-static int mii_spin_reset_complete(struct mii_phy *phy)
-{
- int val;
- int limit = 10000;
-
- while (limit--) {
- val = phy_read(phy, MII_BMCR);
- if (val >= 0 && !(val & BMCR_RESET))
- return val; /* success */
- udelay(10);
- }
- if (val & BMCR_RESET)
- val = -EBUSY;
-
- if (net_ratelimit())
- printk(KERN_ERR "emac%d: PHY reset timeout (%d)\n",
- ((struct ocp_enet_private *)phy->dev->priv)->def->index,
- val);
- return val;
-}
-
-int mii_reset_phy(struct mii_phy *phy)
-{
- int val;
-
- val = phy_read(phy, MII_BMCR);
- val &= ~BMCR_ISOLATE;
- val |= BMCR_RESET;
- phy_write(phy, MII_BMCR, val);
-
- udelay(300);
-
- val = mii_spin_reset_complete(phy);
- if (val >= 0 && (val & BMCR_ISOLATE))
- phy_write(phy, MII_BMCR, val & ~BMCR_ISOLATE);
-
- return val < 0;
-}
-
-static int genmii_setup_aneg(struct mii_phy *phy, u32 advertise)
-{
- int ctl, adv;
-
- phy->autoneg = AUTONEG_ENABLE;
- phy->speed = SPEED_10;
- phy->duplex = DUPLEX_HALF;
- phy->pause = phy->asym_pause = 0;
- phy->advertising = advertise;
-
- /* Setup standard advertise */
- adv = phy_read(phy, MII_ADVERTISE);
- if (adv < 0)
- return adv;
- adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP |
- ADVERTISE_PAUSE_ASYM);
- 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;
- if (advertise & ADVERTISED_Pause)
- adv |= ADVERTISE_PAUSE_CAP;
- if (advertise & ADVERTISED_Asym_Pause)
- adv |= ADVERTISE_PAUSE_ASYM;
- phy_write(phy, MII_ADVERTISE, adv);
-
- if (phy->features &
- (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseT_Half)) {
- adv = phy_read(phy, MII_CTRL1000);
- if (adv < 0)
- return adv;
- adv &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
- if (advertise & ADVERTISED_1000baseT_Full)
- adv |= ADVERTISE_1000FULL;
- if (advertise & ADVERTISED_1000baseT_Half)
- adv |= ADVERTISE_1000HALF;
- phy_write(phy, MII_CTRL1000, adv);
- }
-
- /* Start/Restart aneg */
- /* on some PHYs (e.g. National DP83843) a write to MII_ADVERTISE
- * causes BMCR_RESET to be set on the next read of MII_BMCR, which
- * if not checked for causes the PHY to be reset below */
- ctl = mii_spin_reset_complete(phy);
- if (ctl < 0)
- return ctl;
-
- ctl |= BMCR_ANENABLE | BMCR_ANRESTART;
- phy_write(phy, MII_BMCR, ctl);
-
- return 0;
-}
-
-static int genmii_setup_forced(struct mii_phy *phy, int speed, int fd)
-{
- int ctl;
-
- phy->autoneg = AUTONEG_DISABLE;
- phy->speed = speed;
- phy->duplex = fd;
- phy->pause = phy->asym_pause = 0;
-
- /* First reset the PHY */
- mii_reset_phy(phy);
-
- ctl = phy_read(phy, MII_BMCR);
- if (ctl < 0)
- return ctl;
- ctl &= ~(BMCR_FULLDPLX | BMCR_SPEED100 | BMCR_ANENABLE | BMCR_SPEED1000);
-
- /* Select speed & duplex */
- switch (speed) {
- case SPEED_10:
- break;
- case SPEED_100:
- ctl |= BMCR_SPEED100;
- break;
- case SPEED_1000:
- ctl |= BMCR_SPEED1000;
- break;
- default:
- return -EINVAL;
- }
- if (fd == DUPLEX_FULL)
- ctl |= BMCR_FULLDPLX;
- phy_write(phy, MII_BMCR, ctl);
-
- return 0;
-}
-
-static int genmii_poll_link(struct mii_phy *phy)
-{
- int status;
-
- /* Clear latched value with dummy read */
- phy_read(phy, MII_BMSR);
- status = phy_read(phy, MII_BMSR);
- if (status < 0 || (status & BMSR_LSTATUS) == 0)
- return 0;
- if (phy->autoneg == AUTONEG_ENABLE && !(status & BMSR_ANEGCOMPLETE))
- return 0;
- return 1;
-}
-
-static int genmii_read_link(struct mii_phy *phy)
-{
- if (phy->autoneg == AUTONEG_ENABLE) {
- int glpa = 0;
- int lpa = phy_read(phy, MII_LPA) & phy_read(phy, MII_ADVERTISE);
- if (lpa < 0)
- return lpa;
-
- if (phy->features &
- (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseT_Half)) {
- int adv = phy_read(phy, MII_CTRL1000);
- glpa = phy_read(phy, MII_STAT1000);
-
- if (glpa < 0 || adv < 0)
- return adv;
-
- glpa &= adv << 2;
- }
-
- phy->speed = SPEED_10;
- phy->duplex = DUPLEX_HALF;
- phy->pause = phy->asym_pause = 0;
-
- if (glpa & (LPA_1000FULL | LPA_1000HALF)) {
- phy->speed = SPEED_1000;
- if (glpa & LPA_1000FULL)
- phy->duplex = DUPLEX_FULL;
- } else if (lpa & (LPA_100FULL | LPA_100HALF)) {
- phy->speed = SPEED_100;
- if (lpa & LPA_100FULL)
- phy->duplex = DUPLEX_FULL;
- } else if (lpa & LPA_10FULL)
- phy->duplex = DUPLEX_FULL;
-
- if (phy->duplex == DUPLEX_FULL) {
- phy->pause = lpa & LPA_PAUSE_CAP ? 1 : 0;
- phy->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0;
- }
- } else {
- int bmcr = phy_read(phy, MII_BMCR);
- if (bmcr < 0)
- return bmcr;
-
- if (bmcr & BMCR_FULLDPLX)
- phy->duplex = DUPLEX_FULL;
- else
- phy->duplex = DUPLEX_HALF;
- if (bmcr & BMCR_SPEED1000)
- phy->speed = SPEED_1000;
- else if (bmcr & BMCR_SPEED100)
- phy->speed = SPEED_100;
- else
- phy->speed = SPEED_10;
-
- phy->pause = phy->asym_pause = 0;
- }
- return 0;
-}
-
-/* Generic implementation for most 10/100/1000 PHYs */
-static struct mii_phy_ops generic_phy_ops = {
- .setup_aneg = genmii_setup_aneg,
- .setup_forced = genmii_setup_forced,
- .poll_link = genmii_poll_link,
- .read_link = genmii_read_link
-};
-
-static struct mii_phy_def genmii_phy_def = {
- .phy_id = 0x00000000,
- .phy_id_mask = 0x00000000,
- .name = "Generic MII",
- .ops = &generic_phy_ops
-};
-
-/* CIS8201 */
-#define MII_CIS8201_10BTCSR 0x16
-#define TENBTCSR_ECHO_DISABLE 0x2000
-#define MII_CIS8201_EPCR 0x17
-#define EPCR_MODE_MASK 0x3000
-#define EPCR_GMII_MODE 0x0000
-#define EPCR_RGMII_MODE 0x1000
-#define EPCR_TBI_MODE 0x2000
-#define EPCR_RTBI_MODE 0x3000
-#define MII_CIS8201_ACSR 0x1c
-#define ACSR_PIN_PRIO_SELECT 0x0004
-
-static int cis8201_init(struct mii_phy *phy)
-{
- int epcr;
-
- epcr = phy_read(phy, MII_CIS8201_EPCR);
- if (epcr < 0)
- return epcr;
-
- epcr &= ~EPCR_MODE_MASK;
-
- switch (phy->mode) {
- case PHY_MODE_TBI:
- epcr |= EPCR_TBI_MODE;
- break;
- case PHY_MODE_RTBI:
- epcr |= EPCR_RTBI_MODE;
- break;
- case PHY_MODE_GMII:
- epcr |= EPCR_GMII_MODE;
- break;
- case PHY_MODE_RGMII:
- default:
- epcr |= EPCR_RGMII_MODE;
- }
-
- phy_write(phy, MII_CIS8201_EPCR, epcr);
-
- /* MII regs override strap pins */
- phy_write(phy, MII_CIS8201_ACSR,
- phy_read(phy, MII_CIS8201_ACSR) | ACSR_PIN_PRIO_SELECT);
-
- /* Disable TX_EN -> CRS echo mode, otherwise 10/HDX doesn't work */
- phy_write(phy, MII_CIS8201_10BTCSR,
- phy_read(phy, MII_CIS8201_10BTCSR) | TENBTCSR_ECHO_DISABLE);
-
- return 0;
-}
-
-static struct mii_phy_ops cis8201_phy_ops = {
- .init = cis8201_init,
- .setup_aneg = genmii_setup_aneg,
- .setup_forced = genmii_setup_forced,
- .poll_link = genmii_poll_link,
- .read_link = genmii_read_link
-};
-
-static struct mii_phy_def cis8201_phy_def = {
- .phy_id = 0x000fc410,
- .phy_id_mask = 0x000ffff0,
- .name = "CIS8201 Gigabit Ethernet",
- .ops = &cis8201_phy_ops
-};
-
-static struct mii_phy_def *mii_phy_table[] = {
- &cis8201_phy_def,
- &genmii_phy_def,
- NULL
-};
-
-int mii_phy_probe(struct mii_phy *phy, int address)
-{
- struct mii_phy_def *def;
- int i;
- int id;
-
- phy->autoneg = AUTONEG_DISABLE;
- phy->advertising = 0;
- phy->address = address;
- phy->speed = SPEED_10;
- phy->duplex = DUPLEX_HALF;
- phy->pause = phy->asym_pause = 0;
-
- /* Take PHY out of isolate mode and reset it. */
- if (mii_reset_phy(phy))
- return -ENODEV;
-
- /* Read ID and find matching entry */
- id = (phy_read(phy, MII_PHYSID1) << 16) | phy_read(phy, MII_PHYSID2);
- if (id < 0)
- return -ENODEV;
- for (i = 0; (def = mii_phy_table[i]) != NULL; i++)
- if ((id & def->phy_id_mask) == def->phy_id)
- break;
- /* Should never be NULL (we have a generic entry), but... */
- if (!def)
- return -ENODEV;
-
- phy->def = def;
-
- /* Determine PHY features if needed */
- phy->features = def->features;
- if (!phy->features) {
- u16 bmsr = phy_read(phy, MII_BMSR);
- if (bmsr & BMSR_ANEGCAPABLE)
- phy->features |= SUPPORTED_Autoneg;
- if (bmsr & BMSR_10HALF)
- phy->features |= SUPPORTED_10baseT_Half;
- if (bmsr & BMSR_10FULL)
- phy->features |= SUPPORTED_10baseT_Full;
- if (bmsr & BMSR_100HALF)
- phy->features |= SUPPORTED_100baseT_Half;
- if (bmsr & BMSR_100FULL)
- phy->features |= SUPPORTED_100baseT_Full;
- if (bmsr & BMSR_ESTATEN) {
- u16 esr = phy_read(phy, MII_ESTATUS);
- if (esr & ESTATUS_1000_TFULL)
- phy->features |= SUPPORTED_1000baseT_Full;
- if (esr & ESTATUS_1000_THALF)
- phy->features |= SUPPORTED_1000baseT_Half;
- }
- phy->features |= SUPPORTED_MII;
- }
-
- /* Setup default advertising */
- phy->advertising = phy->features;
-
- return 0;
-}
-
-MODULE_LICENSE("GPL");