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[PATCH] S2io: Timer based slowpath handling 

Hi,
This patch implements the slow-path handling functions(link
state change, hardware errors) as a timer. It is not
handled in interrupt handler as was done previously.

Signed-off-by: Ravinandan Arakali <ravinandan.arakali@neterion.com>
Signed-off-by: Raghavendra Koushik <raghavendra.koushik@neterion.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
raghavendra.koushik@neterion.com 2005-08-03 12:34:11 -07:00 committed by Jeff Garzik
parent d8892c6ee3
commit 25fff88eb7
2 changed files with 23 additions and 3 deletions
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22
drivers/net/s2io.c
View File

@ -168,6 +168,12 @@ static char ethtool_stats_keys[][ETH_GSTRING_LEN] = {
#define S2IO_TEST_LEN sizeof(s2io_gstrings) / ETH_GSTRING_LEN
#define S2IO_STRINGS_LEN S2IO_TEST_LEN * ETH_GSTRING_LEN
#define S2IO_TIMER_CONF(timer, handle, arg, exp) \
init_timer(&timer); \
timer.function = handle; \
timer.data = (unsigned long) arg; \
mod_timer(&timer, (jiffies + exp)) \
/*
* Constants to be programmed into the Xena's registers, to configure
* the XAUI.
@ -2741,6 +2747,7 @@ int s2io_open(struct net_device *dev)
setting_mac_address_failed:
free_irq(sp->pdev->irq, dev);
isr_registration_failed:
del_timer_sync(&sp->alarm_timer);
s2io_reset(sp);
hw_init_failed:
return err;
@ -2898,6 +2905,15 @@ int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
return 0;
}
static void
s2io_alarm_handle(unsigned long data)
{
nic_t *sp = (nic_t *)data;
alarm_intr_handler(sp);
mod_timer(&sp->alarm_timer, jiffies + HZ / 2);
}
/**
* s2io_isr - ISR handler of the device .
* @irq: the irq of the device.
@ -2942,9 +2958,6 @@ static irqreturn_t s2io_isr(int irq, void *dev_id, struct pt_regs *regs)
return IRQ_NONE;
}
if (reason & (GEN_ERROR_INTR))
alarm_intr_handler(sp);
#ifdef CONFIG_S2IO_NAPI
if (reason & GEN_INTR_RXTRAFFIC) {
if (netif_rx_schedule_prep(dev)) {
@ -4394,6 +4407,7 @@ static void s2io_card_down(nic_t * sp)
unsigned long flags;
register u64 val64 = 0;
del_timer_sync(&sp->alarm_timer);
/* If s2io_set_link task is executing, wait till it completes. */
while (test_and_set_bit(0, &(sp->link_state))) {
msleep(50);
@ -4496,6 +4510,8 @@ static int s2io_card_up(nic_t * sp)
return -ENODEV;
}
S2IO_TIMER_CONF(sp->alarm_timer, s2io_alarm_handle, sp, (HZ/2));
atomic_set(&sp->card_state, CARD_UP);
return 0;
}

4
drivers/net/s2io.h
View File

@ -624,6 +624,9 @@ struct s2io_nic {
struct tasklet_struct task;
volatile unsigned long tasklet_status;
/* Timer that handles I/O errors/exceptions */
struct timer_list alarm_timer;
/* Space to back up the PCI config space */
u32 config_space[256 / sizeof(u32)];
@ -819,6 +822,7 @@ static int s2io_poll(struct net_device *dev, int *budget);
#endif
static void s2io_init_pci(nic_t * sp);
int s2io_set_mac_addr(struct net_device *dev, u8 * addr);
static void s2io_alarm_handle(unsigned long data);
static irqreturn_t s2io_isr(int irq, void *dev_id, struct pt_regs *regs);
static int verify_xena_quiescence(nic_t *sp, u64 val64, int flag);
static struct ethtool_ops netdev_ethtool_ops;