redonkable/alistair23-linux
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[PATCH] mv643xx: add netpoll api support

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Add support for the netpoll api for use by netconsole, kgdb, etc.

Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Dale Farnsworth 2005-09-02 13:49:10 -07:00 committed by Jeff Garzik
parent 7342cd810c
commit 63c9e54914
1 changed files with 42 additions and 2 deletions
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44
drivers/net/mv643xx_eth.c
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@ -58,11 +58,10 @@
#define INT_CAUSE_UNMASK_ALL 0x0007ffff
#define INT_CAUSE_UNMASK_ALL_EXT 0x0011ffff
#ifdef MV643XX_RX_QUEUE_FILL_ON_TASK
#define INT_CAUSE_MASK_ALL 0x00000000
#define INT_CAUSE_MASK_ALL_EXT 0x00000000
#define INT_CAUSE_CHECK_BITS INT_CAUSE_UNMASK_ALL
#define INT_CAUSE_CHECK_BITS_EXT INT_CAUSE_UNMASK_ALL_EXT
#endif
#ifdef MV643XX_CHECKSUM_OFFLOAD_TX
#define MAX_DESCS_PER_SKB (MAX_SKB_FRAGS + 1)
@ -1338,6 +1337,43 @@ static struct net_device_stats *mv643xx_eth_get_stats(struct net_device *dev)
return &mp->stats;
}
#ifdef CONFIG_NET_POLL_CONTROLLER
static inline void mv643xx_enable_irq(struct mv643xx_private *mp)
{
int port_num = mp->port_num;
unsigned long flags;
spin_lock_irqsave(&mp->lock, flags);
mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num),
INT_CAUSE_UNMASK_ALL);
mv_write(MV643XX_ETH_INTERRUPT_EXTEND_MASK_REG(port_num),
INT_CAUSE_UNMASK_ALL_EXT);
spin_unlock_irqrestore(&mp->lock, flags);
}
static inline void mv643xx_disable_irq(struct mv643xx_private *mp)
{
int port_num = mp->port_num;
unsigned long flags;
spin_lock_irqsave(&mp->lock, flags);
mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num),
INT_CAUSE_MASK_ALL);
mv_write(MV643XX_ETH_INTERRUPT_EXTEND_MASK_REG(port_num),
INT_CAUSE_MASK_ALL_EXT);
spin_unlock_irqrestore(&mp->lock, flags);
}
static void mv643xx_netpoll(struct net_device *netdev)
{
struct mv643xx_private *mp = netdev_priv(netdev);
mv643xx_disable_irq(mp);
mv643xx_eth_int_handler(netdev->irq, netdev, NULL);
mv643xx_enable_irq(mp);
}
#endif
/*/
* mv643xx_eth_probe
*
@ -1388,6 +1424,10 @@ static int mv643xx_eth_probe(struct device *ddev)
dev->weight = 64;
#endif
#ifdef CONFIG_NET_POLL_CONTROLLER
dev->poll_controller = mv643xx_netpoll;
#endif
dev->watchdog_timeo = 2 * HZ;
dev->tx_queue_len = mp->tx_ring_size;
dev->base_addr = 0;