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path: root/drivers/net/arm/at91_ether.c
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Diffstat (limited to 'drivers/net/arm/at91_ether.c')
-rw-r--r--drivers/net/arm/at91_ether.c157
1 files changed, 123 insertions, 34 deletions
diff --git a/drivers/net/arm/at91_ether.c b/drivers/net/arm/at91_ether.c
index 5503dc8a66e4..85493b7b924f 100644
--- a/drivers/net/arm/at91_ether.c
+++ b/drivers/net/arm/at91_ether.c
@@ -19,7 +19,6 @@
#include <linux/module.h>
#include <linux/init.h>
-#include <linux/config.h>
#include <linux/mii.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
@@ -43,7 +42,9 @@
#define DRV_VERSION "1.0"
static struct net_device *at91_dev;
-static struct clk *ether_clk;
+
+static struct timer_list check_timer;
+#define LINK_POLL_INTERVAL (HZ)
/* ..................................................................... */
@@ -143,7 +144,7 @@ static void read_phy(unsigned char phy_addr, unsigned char address, unsigned int
* MAC accordingly.
* If no link or auto-negotiation is busy, then no changes are made.
*/
-static void update_linkspeed(struct net_device *dev)
+static void update_linkspeed(struct net_device *dev, int silent)
{
struct at91_private *lp = (struct at91_private *) dev->priv;
unsigned int bmsr, bmcr, lpa, mac_cfg;
@@ -151,7 +152,8 @@ static void update_linkspeed(struct net_device *dev)
if (!mii_link_ok(&lp->mii)) { /* no link */
netif_carrier_off(dev);
- printk(KERN_INFO "%s: Link down.\n", dev->name);
+ if (!silent)
+ printk(KERN_INFO "%s: Link down.\n", dev->name);
return;
}
@@ -186,7 +188,8 @@ static void update_linkspeed(struct net_device *dev)
}
at91_emac_write(AT91_EMAC_CFG, mac_cfg);
- printk(KERN_INFO "%s: Link now %i-%s\n", dev->name, speed, (duplex == DUPLEX_FULL) ? "FullDuplex" : "HalfDuplex");
+ if (!silent)
+ printk(KERN_INFO "%s: Link now %i-%s\n", dev->name, speed, (duplex == DUPLEX_FULL) ? "FullDuplex" : "HalfDuplex");
netif_carrier_on(dev);
}
@@ -226,7 +229,7 @@ static irqreturn_t at91ether_phy_interrupt(int irq, void *dev_id, struct pt_regs
goto done;
}
- update_linkspeed(dev);
+ update_linkspeed(dev, 0);
done:
disable_mdi();
@@ -243,14 +246,17 @@ static void enable_phyirq(struct net_device *dev)
unsigned int dsintr, irq_number;
int status;
- if (lp->phy_type == MII_RTL8201_ID) /* RTL8201 does not have an interrupt */
- return;
- if (lp->phy_type == MII_DP83847_ID) /* DP83847 does not have an interrupt */
- return;
- if (lp->phy_type == MII_AC101L_ID) /* AC101L interrupt not supported yet */
+ irq_number = lp->board_data.phy_irq_pin;
+ if (!irq_number) {
+ /*
+ * PHY doesn't have an IRQ pin (RTL8201, DP83847, AC101L),
+ * or board does not have it connected.
+ */
+ check_timer.expires = jiffies + LINK_POLL_INTERVAL;
+ add_timer(&check_timer);
return;
+ }
- irq_number = lp->board_data.phy_irq_pin;
status = request_irq(irq_number, at91ether_phy_interrupt, 0, dev->name, dev);
if (status) {
printk(KERN_ERR "at91_ether: PHY IRQ %d request failed - status %d!\n", irq_number, status);
@@ -292,12 +298,11 @@ static void disable_phyirq(struct net_device *dev)
unsigned int dsintr;
unsigned int irq_number;
- if (lp->phy_type == MII_RTL8201_ID) /* RTL8201 does not have an interrupt */
- return;
- if (lp->phy_type == MII_DP83847_ID) /* DP83847 does not have an interrupt */
- return;
- if (lp->phy_type == MII_AC101L_ID) /* AC101L interrupt not supported yet */
+ irq_number = lp->board_data.phy_irq_pin;
+ if (!irq_number) {
+ del_timer_sync(&check_timer);
return;
+ }
spin_lock_irq(&lp->lock);
enable_mdi();
@@ -326,7 +331,6 @@ static void disable_phyirq(struct net_device *dev)
disable_mdi();
spin_unlock_irq(&lp->lock);
- irq_number = lp->board_data.phy_irq_pin;
free_irq(irq_number, dev); /* Free interrupt handler */
}
@@ -355,6 +359,18 @@ static void reset_phy(struct net_device *dev)
}
#endif
+static void at91ether_check_link(unsigned long dev_id)
+{
+ struct net_device *dev = (struct net_device *) dev_id;
+
+ enable_mdi();
+ update_linkspeed(dev, 1);
+ disable_mdi();
+
+ check_timer.expires = jiffies + LINK_POLL_INTERVAL;
+ add_timer(&check_timer);
+}
+
/* ......................... ADDRESS MANAGEMENT ........................ */
/*
@@ -501,7 +517,7 @@ static int hash_get_index(__u8 *addr)
hash_index |= (bitval << j);
}
- return hash_index;
+ return hash_index;
}
/*
@@ -557,10 +573,8 @@ static void at91ether_set_rx_mode(struct net_device *dev)
at91_emac_write(AT91_EMAC_CFG, cfg);
}
-
/* ......................... ETHTOOL SUPPORT ........................... */
-
static int mdio_read(struct net_device *dev, int phy_id, int location)
{
unsigned int value;
@@ -642,6 +656,22 @@ static struct ethtool_ops at91ether_ethtool_ops = {
.get_link = ethtool_op_get_link,
};
+static int at91ether_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct at91_private *lp = (struct at91_private *) dev->priv;
+ int res;
+
+ if (!netif_running(dev))
+ return -EINVAL;
+
+ spin_lock_irq(&lp->lock);
+ enable_mdi();
+ res = generic_mii_ioctl(&lp->mii, if_mii(rq), cmd, NULL);
+ disable_mdi();
+ spin_unlock_irq(&lp->lock);
+
+ return res;
+}
/* ................................ MAC ................................ */
@@ -685,10 +715,10 @@ static int at91ether_open(struct net_device *dev)
struct at91_private *lp = (struct at91_private *) dev->priv;
unsigned long ctl;
- if (!is_valid_ether_addr(dev->dev_addr))
- return -EADDRNOTAVAIL;
+ if (!is_valid_ether_addr(dev->dev_addr))
+ return -EADDRNOTAVAIL;
- clk_enable(ether_clk); /* Re-enable Peripheral clock */
+ clk_enable(lp->ether_clk); /* Re-enable Peripheral clock */
/* Clear internal statistics */
ctl = at91_emac_read(AT91_EMAC_CTL);
@@ -708,7 +738,7 @@ static int at91ether_open(struct net_device *dev)
/* Determine current link speed */
spin_lock_irq(&lp->lock);
enable_mdi();
- update_linkspeed(dev);
+ update_linkspeed(dev, 0);
disable_mdi();
spin_unlock_irq(&lp->lock);
@@ -722,6 +752,7 @@ static int at91ether_open(struct net_device *dev)
*/
static int at91ether_close(struct net_device *dev)
{
+ struct at91_private *lp = (struct at91_private *) dev->priv;
unsigned long ctl;
/* Disable Receiver and Transmitter */
@@ -738,7 +769,7 @@ static int at91ether_close(struct net_device *dev)
netif_stop_queue(dev);
- clk_disable(ether_clk); /* Disable Peripheral clock */
+ clk_disable(lp->ether_clk); /* Disable Peripheral clock */
return 0;
}
@@ -870,7 +901,7 @@ static irqreturn_t at91ether_interrupt(int irq, void *dev_id, struct pt_regs *re
if (intstatus & AT91_EMAC_RCOM) /* Receive complete */
at91ether_rx(dev);
- if (intstatus & AT91_EMAC_TCOM) { /* Transmit complete */
+ if (intstatus & AT91_EMAC_TCOM) { /* Transmit complete */
/* The TCOM bit is set even if the transmission failed. */
if (intstatus & (AT91_EMAC_TUND | AT91_EMAC_RTRY))
lp->stats.tx_errors += 1;
@@ -899,7 +930,8 @@ static irqreturn_t at91ether_interrupt(int irq, void *dev_id, struct pt_regs *re
/*
* Initialize the ethernet interface
*/
-static int __init at91ether_setup(unsigned long phy_type, unsigned short phy_address, struct platform_device *pdev)
+static int __init at91ether_setup(unsigned long phy_type, unsigned short phy_address,
+ struct platform_device *pdev, struct clk *ether_clk)
{
struct at91_eth_data *board_data = pdev->dev.platform_data;
struct net_device *dev;
@@ -933,6 +965,7 @@ static int __init at91ether_setup(unsigned long phy_type, unsigned short phy_add
return -ENOMEM;
}
lp->board_data = *board_data;
+ lp->ether_clk = ether_clk;
platform_set_drvdata(pdev, dev);
spin_lock_init(&lp->lock);
@@ -945,6 +978,7 @@ static int __init at91ether_setup(unsigned long phy_type, unsigned short phy_add
dev->set_multicast_list = at91ether_set_rx_mode;
dev->set_mac_address = set_mac_address;
dev->ethtool_ops = &at91ether_ethtool_ops;
+ dev->do_ioctl = at91ether_ioctl;
SET_NETDEV_DEV(dev, &pdev->dev);
@@ -975,6 +1009,9 @@ static int __init at91ether_setup(unsigned long phy_type, unsigned short phy_add
lp->mii.dev = dev; /* Support for ethtool */
lp->mii.mdio_read = mdio_read;
lp->mii.mdio_write = mdio_write;
+ lp->mii.phy_id = phy_address;
+ lp->mii.phy_id_mask = 0x1f;
+ lp->mii.reg_num_mask = 0x1f;
lp->phy_type = phy_type; /* Type of PHY connected */
lp->phy_address = phy_address; /* MDI address of PHY */
@@ -992,11 +1029,18 @@ static int __init at91ether_setup(unsigned long phy_type, unsigned short phy_add
/* Determine current link speed */
spin_lock_irq(&lp->lock);
enable_mdi();
- update_linkspeed(dev);
+ update_linkspeed(dev, 0);
disable_mdi();
spin_unlock_irq(&lp->lock);
netif_carrier_off(dev); /* will be enabled in open() */
+ /* If board has no PHY IRQ, use a timer to poll the PHY */
+ if (!lp->board_data.phy_irq_pin) {
+ init_timer(&check_timer);
+ check_timer.data = (unsigned long)dev;
+ check_timer.function = at91ether_check_link;
+ }
+
/* Display ethernet banner */
printk(KERN_INFO "%s: AT91 ethernet at 0x%08x int=%d %s%s (%02x:%02x:%02x:%02x:%02x:%02x)\n",
dev->name, (uint) dev->base_addr, dev->irq,
@@ -1005,7 +1049,7 @@ static int __init at91ether_setup(unsigned long phy_type, unsigned short phy_add
dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
if ((phy_type == MII_DM9161_ID) || (lp->phy_type == MII_DM9161A_ID))
- printk(KERN_INFO "%s: Davicom 9196 PHY %s\n", dev->name, (lp->phy_media == PORT_FIBRE) ? "(Fiber)" : "(Copper)");
+ printk(KERN_INFO "%s: Davicom 9161 PHY %s\n", dev->name, (lp->phy_media == PORT_FIBRE) ? "(Fiber)" : "(Copper)");
else if (phy_type == MII_LXT971A_ID)
printk(KERN_INFO "%s: Intel LXT971A PHY\n", dev->name);
else if (phy_type == MII_RTL8201_ID)
@@ -1031,9 +1075,10 @@ static int __init at91ether_probe(struct platform_device *pdev)
int detected = -1;
unsigned long phy_id;
unsigned short phy_address = 0;
+ struct clk *ether_clk;
ether_clk = clk_get(&pdev->dev, "ether_clk");
- if (!ether_clk) {
+ if (IS_ERR(ether_clk)) {
printk(KERN_ERR "at91_ether: no clock defined\n");
return -ENODEV;
}
@@ -1056,7 +1101,7 @@ static int __init at91ether_probe(struct platform_device *pdev)
case MII_DP83847_ID: /* National Semiconductor DP83847: */
case MII_AC101L_ID: /* Altima AC101L: PHY_ID1 = 0x22, PHY_ID2 = 0x5520 */
case MII_KS8721_ID: /* Micrel KS8721: PHY_ID1 = 0x22, PHY_ID2 = 0x1610 */
- detected = at91ether_setup(phy_id, phy_address, pdev);
+ detected = at91ether_setup(phy_id, phy_address, pdev, ether_clk);
break;
}
@@ -1075,17 +1120,61 @@ static int __devexit at91ether_remove(struct platform_device *pdev)
unregister_netdev(at91_dev);
free_irq(at91_dev->irq, at91_dev);
dma_free_coherent(NULL, sizeof(struct recv_desc_bufs), lp->dlist, (dma_addr_t)lp->dlist_phys);
- clk_put(ether_clk);
+ clk_put(lp->ether_clk);
free_netdev(at91_dev);
at91_dev = NULL;
return 0;
}
+#ifdef CONFIG_PM
+
+static int at91ether_suspend(struct platform_device *pdev, pm_message_t mesg)
+{
+ struct at91_private *lp = (struct at91_private *) at91_dev->priv;
+ struct net_device *net_dev = platform_get_drvdata(pdev);
+ int phy_irq = lp->board_data.phy_irq_pin;
+
+ if (netif_running(net_dev)) {
+ if (phy_irq)
+ disable_irq(phy_irq);
+
+ netif_stop_queue(net_dev);
+ netif_device_detach(net_dev);
+
+ clk_disable(lp->ether_clk);
+ }
+ return 0;
+}
+
+static int at91ether_resume(struct platform_device *pdev)
+{
+ struct at91_private *lp = (struct at91_private *) at91_dev->priv;
+ struct net_device *net_dev = platform_get_drvdata(pdev);
+ int phy_irq = lp->board_data.phy_irq_pin;
+
+ if (netif_running(net_dev)) {
+ clk_enable(lp->ether_clk);
+
+ netif_device_attach(net_dev);
+ netif_start_queue(net_dev);
+
+ if (phy_irq)
+ enable_irq(phy_irq);
+ }
+ return 0;
+}
+
+#else
+#define at91ether_suspend NULL
+#define at91ether_resume NULL
+#endif
+
static struct platform_driver at91ether_driver = {
.probe = at91ether_probe,
.remove = __devexit_p(at91ether_remove),
- /* FIXME: support suspend and resume */
+ .suspend = at91ether_suspend,
+ .resume = at91ether_resume,
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-17 00:12:16 +0300