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pasemi_mac: PHY support

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PHY support for pasemi_mac.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Olof Johansson 2007-05-08 00:47:54 -05:00 committed by Jeff Garzik
parent ceb5136137
commit bb6e959079
3 changed files with 133 additions and 0 deletions
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1
drivers/net/Kconfig
View file

@ -2488,6 +2488,7 @@ config NETXEN_NIC
config PASEMI_MAC
tristate "PA Semi 1/10Gbit MAC"
depends on PPC64 && PCI
select PHYLIB
help
This driver supports the on-chip 1/10Gbit Ethernet controller on
PA Semi's PWRficient line of chips.

126
drivers/net/pasemi_mac.c
View file

@ -606,6 +606,114 @@ static irqreturn_t pasemi_mac_tx_intr(int irq, void *data)
return IRQ_HANDLED;
}
static void pasemi_adjust_link(struct net_device *dev)
{
struct pasemi_mac *mac = netdev_priv(dev);
int msg;
unsigned int flags;
unsigned int new_flags;
if (!mac->phydev->link) {
/* If no link, MAC speed settings don't matter. Just report
* link down and return.
*/
if (mac->link && netif_msg_link(mac))
printk(KERN_INFO "%s: Link is down.\n", dev->name);
netif_carrier_off(dev);
mac->link = 0;
return;
} else
netif_carrier_on(dev);
pci_read_config_dword(mac->pdev, PAS_MAC_CFG_PCFG, &flags);
new_flags = flags & ~(PAS_MAC_CFG_PCFG_HD | PAS_MAC_CFG_PCFG_SPD_M |
PAS_MAC_CFG_PCFG_TSR_M);
if (!mac->phydev->duplex)
new_flags |= PAS_MAC_CFG_PCFG_HD;
switch (mac->phydev->speed) {
case 1000:
new_flags |= PAS_MAC_CFG_PCFG_SPD_1G |
PAS_MAC_CFG_PCFG_TSR_1G;
break;
case 100:
new_flags |= PAS_MAC_CFG_PCFG_SPD_100M |
PAS_MAC_CFG_PCFG_TSR_100M;
break;
case 10:
new_flags |= PAS_MAC_CFG_PCFG_SPD_10M |
PAS_MAC_CFG_PCFG_TSR_10M;
break;
default:
printk("Unsupported speed %d\n", mac->phydev->speed);
}
/* Print on link or speed/duplex change */
msg = mac->link != mac->phydev->link || flags != new_flags;
mac->duplex = mac->phydev->duplex;
mac->speed = mac->phydev->speed;
mac->link = mac->phydev->link;
if (new_flags != flags)
pci_write_config_dword(mac->pdev, PAS_MAC_CFG_PCFG, new_flags);
if (msg && netif_msg_link(mac))
printk(KERN_INFO "%s: Link is up at %d Mbps, %s duplex.\n",
dev->name, mac->speed, mac->duplex ? "full" : "half");
}
static int pasemi_mac_phy_init(struct net_device *dev)
{
struct pasemi_mac *mac = netdev_priv(dev);
struct device_node *dn, *phy_dn;
struct phy_device *phydev;
unsigned int phy_id;
const phandle *ph;
const unsigned int *prop;
struct resource r;
int ret;
dn = pci_device_to_OF_node(mac->pdev);
ph = get_property(dn, "phy-handle", NULL);
if (!ph)
return -ENODEV;
phy_dn = of_find_node_by_phandle(*ph);
prop = get_property(phy_dn, "reg", NULL);
ret = of_address_to_resource(phy_dn->parent, 0, &r);
if (ret)
goto err;
phy_id = *prop;
snprintf(mac->phy_id, BUS_ID_SIZE, PHY_ID_FMT, (int)r.start, phy_id);
of_node_put(phy_dn);
mac->link = 0;
mac->speed = 0;
mac->duplex = -1;
phydev = phy_connect(dev, mac->phy_id, &pasemi_adjust_link, 0, PHY_INTERFACE_MODE_SGMII);
if (IS_ERR(phydev)) {
printk(KERN_ERR "%s: Could not attach to phy\n", dev->name);
return PTR_ERR(phydev);
}
mac->phydev = phydev;
return 0;
err:
of_node_put(phy_dn);
return -ENODEV;
}
static int pasemi_mac_open(struct net_device *dev)
{
struct pasemi_mac *mac = netdev_priv(dev);
@ -678,6 +786,13 @@ static int pasemi_mac_open(struct net_device *dev)
pasemi_mac_replenish_rx_ring(dev);
ret = pasemi_mac_phy_init(dev);
/* Some configs don't have PHYs (XAUI etc), so don't complain about
* failed init due to -ENODEV.
*/
if (ret && ret != -ENODEV)
dev_warn(&mac->pdev->dev, "phy init failed: %d\n", ret);
netif_start_queue(dev);
netif_poll_enable(dev);
@ -708,6 +823,9 @@ static int pasemi_mac_open(struct net_device *dev)
goto out_rx_int;
}
if (mac->phydev)
phy_start(mac->phydev);
return 0;
out_rx_int:
@ -731,6 +849,11 @@ static int pasemi_mac_close(struct net_device *dev)
unsigned int stat;
int retries;
if (mac->phydev) {
phy_stop(mac->phydev);
phy_disconnect(mac->phydev);
}
netif_stop_queue(dev);
/* Clean out any pending buffers */
@ -1028,6 +1151,9 @@ pasemi_mac_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
mac->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
/* Enable most messages by default */
mac->msg_enable = (NETIF_MSG_IFUP << 1 ) - 1;
err = register_netdev(dev);
if (err) {

6
drivers/net/pasemi_mac.h
View file

@ -24,6 +24,7 @@
#include <linux/ethtool.h>
#include <linux/netdevice.h>
#include <linux/spinlock.h>
#include <linux/phy.h>
struct pasemi_mac_txring {
spinlock_t lock;
@ -54,6 +55,7 @@ struct pasemi_mac {
struct pci_dev *pdev;
struct pci_dev *dma_pdev;
struct pci_dev *iob_pdev;
struct phy_device *phydev;
struct net_device_stats stats;
/* Pointer to the cacheable per-channel status registers */
@ -75,8 +77,12 @@ struct pasemi_mac {
struct pasemi_mac_rxring *rx;
unsigned long tx_irq;
unsigned long rx_irq;
int link;
int speed;
int duplex;
unsigned int msg_enable;
char phy_id[BUS_ID_SIZE];
};
/* Software status descriptor (desc_info) */