static irqreturn_t hp_sdc_isr(int irq, void *dev_id)
{
uint8_t status, data;
status = hp_sdc_status_in8();
/* Read data unconditionally to advance i8042. */
data = hp_sdc_data_in8();
/* For now we are ignoring these until we get the SDC to behave. */
if (((status & 0xf1) == 0x51) && data == 0x82)
return IRQ_HANDLED;
switch (status & HP_SDC_STATUS_IRQMASK) {
case 0: /* This case is not documented. */
break;
case HP_SDC_STATUS_USERTIMER:
case HP_SDC_STATUS_PERIODIC:
case HP_SDC_STATUS_TIMER:
read_lock(&hp_sdc.hook_lock);
if (hp_sdc.timer != NULL)
hp_sdc.timer(irq, dev_id, status, data);
read_unlock(&hp_sdc.hook_lock);
break;
case HP_SDC_STATUS_REG:
hp_sdc_take(irq, dev_id, status, data);
break;
case HP_SDC_STATUS_HILCMD:
case HP_SDC_STATUS_HILDATA:
read_lock(&hp_sdc.hook_lock);
if (hp_sdc.hil != NULL)
hp_sdc.hil(irq, dev_id, status, data);
read_unlock(&hp_sdc.hook_lock);
break;
case HP_SDC_STATUS_PUP:
read_lock(&hp_sdc.hook_lock);
if (hp_sdc.pup != NULL)
hp_sdc.pup(irq, dev_id, status, data);
else
printk(KERN_INFO PREFIX "HP SDC reports successful PUP.\n");
read_unlock(&hp_sdc.hook_lock);
break;
default:
read_lock(&hp_sdc.hook_lock);
if (hp_sdc.cooked != NULL)
hp_sdc.cooked(irq, dev_id, status, data);
read_unlock(&hp_sdc.hook_lock);
break;
}
return IRQ_HANDLED;
}
static void hp_sdc_nmisr(int irq, void *dev_id, struct pt_regs * regs) {
int status;
status = hp_sdc_status_in8();
printk(KERN_WARNING PREFIX "NMI !\n");
#if 0
if (status & HP_SDC_NMISTATUS_FHS) {
read_lock(&hp_sdc.hook_lock);
if (hp_sdc.timer != NULL)
hp_sdc.timer(irq, dev_id, status, 0);
read_unlock(&hp_sdc.hook_lock);
}
else {
/* TODO: pass this on to the HIL handler, or do SAK here? */
printk(KERN_WARNING PREFIX "HIL NMI\n");
}
#endif
}
