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Date: Wed, 3 Sep 2008 15:20:12 +0200
From: Lennert Buytenhek <buytenh@...tstofly.org>
To: netdev@...r.kernel.org
Cc: Andy Fleming <afleming@...escale.com>
Subject: [PATCH 3/3] mv643xx_eth: convert to phylib
Switch mv643xx_eth from using drivers/net/mii.c to using phylib.
Since the mv643xx_eth hardware does all the link state handling and
PHY polling, the driver will use phylib in the "Doing it all yourself"
mode described in the phylib documentation.
Signed-off-by: Lennert Buytenhek <buytenh@...vell.com>
---
drivers/net/Kconfig | 2 +-
drivers/net/mv643xx_eth.c | 218 ++++++++++++++++++++-------------------------
2 files changed, 99 insertions(+), 121 deletions(-)
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index a5c141c..9410266 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -2262,7 +2262,7 @@ config UGETH_TX_ON_DEMAND
config MV643XX_ETH
tristate "Marvell Discovery (643XX) and Orion ethernet support"
depends on MV64360 || MV64X60 || (PPC_MULTIPLATFORM && PPC32) || PLAT_ORION
- select MII
+ select PHYLIB
help
This driver supports the gigabit ethernet MACs in the
Marvell Discovery PPC/MIPS chipset family (MV643XX) and
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c
index c0ff2ee..67451e6 100644
--- a/drivers/net/mv643xx_eth.c
+++ b/drivers/net/mv643xx_eth.c
@@ -48,7 +48,7 @@
#include <linux/kernel.h>
#include <linux/spinlock.h>
#include <linux/workqueue.h>
-#include <linux/mii.h>
+#include <linux/phy.h>
#include <linux/mv643xx_eth.h>
#include <asm/io.h>
#include <asm/types.h>
@@ -248,9 +248,9 @@ struct mv643xx_eth_shared_private {
struct mv643xx_eth_shared_private *smi;
/*
- * Protects access to SMI_REG, which is shared between ports.
+ * Provides access to local SMI interface.
*/
- struct mutex phy_lock;
+ struct mii_bus smi_bus;
/*
* If we have access to the error interrupt pin (which is
@@ -349,11 +349,10 @@ struct mv643xx_eth_private {
struct net_device *dev;
- int phy_addr;
+ struct phy_device *phy;
struct mib_counters mib_counters;
struct work_struct tx_timeout_task;
- struct mii_if_info mii;
struct napi_struct napi;
u8 work_link;
@@ -1062,62 +1061,50 @@ static int smi_wait_ready(struct mv643xx_eth_shared_private *msp)
return 0;
}
-static int smi_reg_read(struct mv643xx_eth_private *mp,
- unsigned int addr, unsigned int reg)
+static int smi_bus_read(struct mii_bus *bus, int addr, int reg)
{
- struct mv643xx_eth_shared_private *msp = mp->shared->smi;
+ struct mv643xx_eth_shared_private *msp = bus->priv;
void __iomem *smi_reg = msp->base + SMI_REG;
int ret;
- mutex_lock(&msp->phy_lock);
-
if (smi_wait_ready(msp)) {
- printk("%s: SMI bus busy timeout\n", mp->dev->name);
- ret = -ETIMEDOUT;
- goto out;
+ printk("mv643xx_eth: SMI bus busy timeout\n");
+ return -ETIMEDOUT;
}
writel(SMI_OPCODE_READ | (reg << 21) | (addr << 16), smi_reg);
if (smi_wait_ready(msp)) {
- printk("%s: SMI bus busy timeout\n", mp->dev->name);
- ret = -ETIMEDOUT;
- goto out;
+ printk("mv643xx_eth: SMI bus busy timeout\n");
+ return -ETIMEDOUT;
}
ret = readl(smi_reg);
if (!(ret & SMI_READ_VALID)) {
- printk("%s: SMI bus read not valid\n", mp->dev->name);
- ret = -ENODEV;
- goto out;
+ printk("mv643xx_eth: SMI bus read not valid\n");
+ return -ENODEV;
}
- ret &= 0xffff;
-
-out:
- mutex_unlock(&msp->phy_lock);
-
- return ret;
+ return ret & 0xffff;
}
-static int smi_reg_write(struct mv643xx_eth_private *mp, unsigned int addr,
- unsigned int reg, unsigned int value)
+static int smi_bus_write(struct mii_bus *bus, int addr, int reg, u16 val)
{
- struct mv643xx_eth_shared_private *msp = mp->shared->smi;
+ struct mv643xx_eth_shared_private *msp = bus->priv;
void __iomem *smi_reg = msp->base + SMI_REG;
- mutex_lock(&msp->phy_lock);
-
if (smi_wait_ready(msp)) {
- printk("%s: SMI bus busy timeout\n", mp->dev->name);
- mutex_unlock(&msp->phy_lock);
+ printk("mv643xx_eth: SMI bus busy timeout\n");
return -ETIMEDOUT;
}
writel(SMI_OPCODE_WRITE | (reg << 21) |
- (addr << 16) | (value & 0xffff), smi_reg);
+ (addr << 16) | (val & 0xffff), smi_reg);
- mutex_unlock(&msp->phy_lock);
+ if (smi_wait_ready(msp)) {
+ printk("mv643xx_eth: SMI bus busy timeout\n");
+ return -ETIMEDOUT;
+ }
return 0;
}
@@ -1262,7 +1249,9 @@ static int mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *
struct mv643xx_eth_private *mp = netdev_priv(dev);
int err;
- err = mii_ethtool_gset(&mp->mii, cmd);
+ err = phy_read_status(mp->phy);
+ if (err == 0)
+ err = phy_ethtool_gset(mp->phy, cmd);
/*
* The MAC does not support 1000baseT_Half.
@@ -1316,7 +1305,7 @@ static int mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *
*/
cmd->advertising &= ~ADVERTISED_1000baseT_Half;
- return mii_ethtool_sset(&mp->mii, cmd);
+ return phy_ethtool_sset(mp->phy, cmd);
}
static int mv643xx_eth_set_settings_phyless(struct net_device *dev, struct ethtool_cmd *cmd)
@@ -1338,7 +1327,7 @@ static int mv643xx_eth_nway_reset(struct net_device *dev)
{
struct mv643xx_eth_private *mp = netdev_priv(dev);
- return mii_nway_restart(&mp->mii);
+ return phy_nway_restart(mp->phy);
}
static int mv643xx_eth_nway_reset_phyless(struct net_device *dev)
@@ -1350,7 +1339,7 @@ static u32 mv643xx_eth_get_link(struct net_device *dev)
{
struct mv643xx_eth_private *mp = netdev_priv(dev);
- return mii_link_ok(&mp->mii);
+ return phy_link_ok(mp->phy);
}
static u32 mv643xx_eth_get_link_phyless(struct net_device *dev)
@@ -1935,16 +1924,16 @@ static void phy_reset(struct mv643xx_eth_private *mp)
{
int data;
- data = smi_reg_read(mp, mp->phy_addr, MII_BMCR);
+ data = phy_read(mp->phy, MII_BMCR);
if (data < 0)
return;
data |= BMCR_RESET;
- if (smi_reg_write(mp, mp->phy_addr, MII_BMCR, data) < 0)
+ if (phy_write(mp->phy, MII_BMCR, data) < 0)
return;
do {
- data = smi_reg_read(mp, mp->phy_addr, MII_BMCR);
+ data = phy_read(mp->phy, MII_BMCR);
} while (data >= 0 && data & BMCR_RESET);
}
@@ -1956,7 +1945,7 @@ static void port_start(struct mv643xx_eth_private *mp)
/*
* Perform PHY reset, if there is a PHY.
*/
- if (mp->phy_addr != -1) {
+ if (mp->phy != NULL) {
struct ethtool_cmd cmd;
mv643xx_eth_get_settings(mp->dev, &cmd);
@@ -1973,7 +1962,7 @@ static void port_start(struct mv643xx_eth_private *mp)
wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
pscr |= DO_NOT_FORCE_LINK_FAIL;
- if (mp->phy_addr == -1)
+ if (mp->phy == NULL)
pscr |= FORCE_LINK_PASS;
wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
@@ -2179,8 +2168,8 @@ static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
struct mv643xx_eth_private *mp = netdev_priv(dev);
- if (mp->phy_addr != -1)
- return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL);
+ if (mp->phy != NULL)
+ return phy_mii_ioctl(mp->phy, if_mii(ifr), cmd);
return -EOPNOTSUPP;
}
@@ -2250,18 +2239,6 @@ static void mv643xx_eth_netpoll(struct net_device *dev)
}
#endif
-static int mv643xx_eth_mdio_read(struct net_device *dev, int addr, int reg)
-{
- struct mv643xx_eth_private *mp = netdev_priv(dev);
- return smi_reg_read(mp, addr, reg);
-}
-
-static void mv643xx_eth_mdio_write(struct net_device *dev, int addr, int reg, int val)
-{
- struct mv643xx_eth_private *mp = netdev_priv(dev);
- smi_reg_write(mp, addr, reg, val);
-}
-
/* platform glue ************************************************************/
static void
@@ -2350,11 +2327,23 @@ static int mv643xx_eth_shared_probe(struct platform_device *pdev)
if (msp->base == NULL)
goto out_free;
- msp->smi = msp;
- if (pd != NULL && pd->shared_smi != NULL)
+ /*
+ * Set up and register SMI bus.
+ */
+ if (pd == NULL || pd->shared_smi == NULL) {
+ msp->smi_bus.priv = msp;
+ msp->smi_bus.name = "mv643xx_eth smi";
+ msp->smi_bus.read = smi_bus_read;
+ msp->smi_bus.write = smi_bus_write,
+ snprintf(msp->smi_bus.id, MII_BUS_ID_SIZE, "%d", pdev->id);
+ msp->smi_bus.dev = &pdev->dev;
+ msp->smi_bus.phy_mask = 0xffffffff;
+ if (mdiobus_register(&msp->smi_bus) < 0)
+ goto out_unmap;
+ msp->smi = msp;
+ } else {
msp->smi = platform_get_drvdata(pd->shared_smi);
-
- mutex_init(&msp->phy_lock);
+ }
msp->err_interrupt = NO_IRQ;
init_waitqueue_head(&msp->smi_busy_wait);
@@ -2390,6 +2379,8 @@ static int mv643xx_eth_shared_probe(struct platform_device *pdev)
return 0;
+out_unmap:
+ iounmap(msp->base);
out_free:
kfree(msp);
out:
@@ -2399,7 +2390,10 @@ out:
static int mv643xx_eth_shared_remove(struct platform_device *pdev)
{
struct mv643xx_eth_shared_private *msp = platform_get_drvdata(pdev);
+ struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data;
+ if (pd == NULL || pd->shared_smi == NULL)
+ mdiobus_unregister(&msp->smi_bus);
if (msp->err_interrupt != NO_IRQ)
free_irq(msp->err_interrupt, msp);
iounmap(msp->base);
@@ -2447,17 +2441,6 @@ static void set_params(struct mv643xx_eth_private *mp,
else
uc_addr_get(mp, dev->dev_addr);
- if (pd->phy_addr == MV643XX_ETH_PHY_NONE) {
- mp->phy_addr = -1;
- } else {
- if (pd->phy_addr != MV643XX_ETH_PHY_ADDR_DEFAULT) {
- mp->phy_addr = pd->phy_addr & 0x3f;
- phy_addr_set(mp, mp->phy_addr);
- } else {
- mp->phy_addr = phy_addr_get(mp);
- }
- }
-
mp->default_rx_ring_size = DEFAULT_RX_QUEUE_SIZE;
if (pd->rx_queue_size)
mp->default_rx_ring_size = pd->rx_queue_size;
@@ -2475,76 +2458,69 @@ static void set_params(struct mv643xx_eth_private *mp,
mp->txq_count = pd->tx_queue_count ? : 1;
}
-static int phy_detect(struct mv643xx_eth_private *mp)
+static struct phy_device *phy_scan(struct mv643xx_eth_private *mp,
+ int phy_addr)
{
- int data;
- int data2;
-
- data = smi_reg_read(mp, mp->phy_addr, MII_BMCR);
- if (data < 0)
- return -ENODEV;
+ struct mii_bus *bus = &mp->shared->smi->smi_bus;
+ struct phy_device *phydev;
+ int start;
+ int num;
+ int i;
- if (smi_reg_write(mp, mp->phy_addr, MII_BMCR, data ^ BMCR_ANENABLE) < 0)
- return -ENODEV;
+ if (phy_addr == MV643XX_ETH_PHY_ADDR_DEFAULT) {
+ start = phy_addr_get(mp) & 0x1f;
+ num = 32;
+ } else {
+ start = phy_addr & 0x1f;
+ num = 1;
+ }
- data2 = smi_reg_read(mp, mp->phy_addr, MII_BMCR);
- if (data2 < 0)
- return -ENODEV;
+ phydev = NULL;
+ for (i = 0; i < num; i++) {
+ int addr = (start + i) & 0x1f;
- if (((data ^ data2) & BMCR_ANENABLE) == 0)
- return -ENODEV;
+ if (bus->phy_map[addr] == NULL)
+ mdiobus_scan(bus, addr);
- smi_reg_write(mp, mp->phy_addr, MII_BMCR, data);
+ if (phydev == NULL) {
+ phydev = bus->phy_map[addr];
+ if (phydev != NULL)
+ phy_addr_set(mp, addr);
+ }
+ }
- return 0;
+ return phydev;
}
-static int phy_init(struct mv643xx_eth_private *mp,
- struct mv643xx_eth_platform_data *pd)
+static void phy_init(struct mv643xx_eth_private *mp, int speed, int duplex)
{
struct ethtool_cmd cmd;
- int err;
- err = phy_detect(mp);
- if (err) {
- dev_printk(KERN_INFO, &mp->dev->dev,
- "no PHY detected at addr %d\n", mp->phy_addr);
- return err;
- }
phy_reset(mp);
- mp->mii.phy_id = mp->phy_addr;
- mp->mii.phy_id_mask = 0x3f;
- mp->mii.reg_num_mask = 0x1f;
- mp->mii.dev = mp->dev;
- mp->mii.mdio_read = mv643xx_eth_mdio_read;
- mp->mii.mdio_write = mv643xx_eth_mdio_write;
-
- mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii);
+ phy_attach(mp->dev, mp->phy->dev.bus_id, 0, 0);
memset(&cmd, 0, sizeof(cmd));
cmd.port = PORT_MII;
cmd.transceiver = XCVR_INTERNAL;
- cmd.phy_address = mp->phy_addr;
- if (pd->speed == 0) {
+ cmd.phy_address = mp->phy->addr;
+ if (speed == 0) {
cmd.autoneg = AUTONEG_ENABLE;
cmd.speed = SPEED_100;
cmd.advertising = ADVERTISED_10baseT_Half |
ADVERTISED_10baseT_Full |
ADVERTISED_100baseT_Half |
ADVERTISED_100baseT_Full;
- if (mp->mii.supports_gmii)
+ if (phy_check_gmii_support(mp->phy))
cmd.advertising |= ADVERTISED_1000baseT_Full;
} else {
cmd.autoneg = AUTONEG_DISABLE;
- cmd.speed = pd->speed;
- cmd.duplex = pd->duplex;
+ cmd.speed = speed;
+ cmd.duplex = duplex;
}
mv643xx_eth_set_settings(mp->dev, &cmd);
-
- return 0;
}
static void init_pscr(struct mv643xx_eth_private *mp, int speed, int duplex)
@@ -2558,7 +2534,7 @@ static void init_pscr(struct mv643xx_eth_private *mp, int speed, int duplex)
}
pscr = MAX_RX_PACKET_9700BYTE | SERIAL_PORT_CONTROL_RESERVED;
- if (mp->phy_addr == -1) {
+ if (mp->phy == NULL) {
pscr |= DISABLE_AUTO_NEG_SPEED_GMII;
if (speed == SPEED_1000)
pscr |= SET_GMII_SPEED_TO_1000;
@@ -2612,20 +2588,20 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
set_params(mp, pd);
dev->real_num_tx_queues = mp->txq_count;
- mib_counters_clear(mp);
- INIT_WORK(&mp->tx_timeout_task, tx_timeout_task);
-
- if (mp->phy_addr != -1) {
- err = phy_init(mp, pd);
- if (err)
- goto out;
+ if (pd->phy_addr != MV643XX_ETH_PHY_NONE)
+ mp->phy = phy_scan(mp, pd->phy_addr);
+ if (mp->phy != NULL) {
+ phy_init(mp, pd->speed, pd->duplex);
SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops);
} else {
SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops_phyless);
}
+
init_pscr(mp, pd->speed, pd->duplex);
+ mib_counters_clear(mp);
+ INIT_WORK(&mp->tx_timeout_task, tx_timeout_task);
netif_napi_add(dev, &mp->napi, mv643xx_eth_poll, 128);
init_timer(&mp->rx_oom);
@@ -2683,6 +2659,8 @@ static int mv643xx_eth_remove(struct platform_device *pdev)
struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
unregister_netdev(mp->dev);
+ if (mp->phy != NULL)
+ phy_detach(mp->phy);
flush_scheduled_work();
free_netdev(mp->dev);
--
1.5.6.4
--
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