int amiga_request_irq(unsigned int irq, void (*handler)(int, void *, struct pt_regs *),
unsigned long flags, const char *devname, void *dev_id)
{
irq_node_t *node;
if (irq >= AMI_IRQS) {
printk ("%s: Unknown IRQ %d from %s\n", __FUNCTION__, irq, devname);
return -ENXIO;
}
if (irq >= IRQ_AMIGA_AUTO)
return sys_request_irq(irq - IRQ_AMIGA_AUTO, handler,
flags, devname, dev_id);
if (irq >= IRQ_AMIGA_CIAB)
return cia_request_irq(&ciab_base, irq - IRQ_AMIGA_CIAB,
handler, flags, devname, dev_id);
if (irq >= IRQ_AMIGA_CIAA)
return cia_request_irq(&ciaa_base, irq - IRQ_AMIGA_CIAA,
handler, flags, devname, dev_id);
if (ami_servers[irq]) {
if (!(node = new_irq_node()))
return -ENOMEM;
node->handler = handler;
node->flags = flags;
node->dev_id = dev_id;
node->devname = devname;
node->next = NULL;
amiga_insert_irq(&ami_irq_list[irq], node);
} else {
if (!(ami_irq_list[irq]->flags & IRQ_FLG_STD)) {
if (ami_irq_list[irq]->flags & IRQ_FLG_LOCK) {
printk("%s: IRQ %d from %s is not replaceable\n",
__FUNCTION__, irq, ami_irq_list[irq]->devname);
return -EBUSY;
}
if (!(flags & IRQ_FLG_REPLACE)) {
printk("%s: %s can't replace IRQ %d from %s\n",
__FUNCTION__, devname, irq, ami_irq_list[irq]->devname);
return -EBUSY;
}
}
ami_irq_list[irq]->handler = handler;
ami_irq_list[irq]->flags = flags;
ami_irq_list[irq]->dev_id = dev_id;
ami_irq_list[irq]->devname = devname;
}
/* enable the interrupt */
if (irq < IRQ_AMIGA_PORTS && !ami_ablecount[irq])
custom.intena = IF_SETCLR | ami_intena_vals[irq];
return 0;
}
int amiga_request_irq(unsigned int irq,
void (*handler)(int, void *, struct pt_regs *),
unsigned long flags, const char *devname, void *dev_id)
{
irq_node_t *node;
int error = 0;
if (irq >= AMI_IRQS) {
printk ("%s: Unknown IRQ %d from %s\n", __FUNCTION__,
irq, devname);
return -ENXIO;
}
if (irq >= IRQ_AMIGA_AUTO)
return sys_request_irq(irq - IRQ_AMIGA_AUTO, handler,
flags, devname, dev_id);
if (irq >= IRQ_AMIGA_CIAB)
return cia_request_irq(&ciab_base, irq - IRQ_AMIGA_CIAB,
handler, flags, devname, dev_id);
if (irq >= IRQ_AMIGA_CIAA)
return cia_request_irq(&ciaa_base, irq - IRQ_AMIGA_CIAA,
handler, flags, devname, dev_id);
/*
* IRQ_AMIGA_PORTS & IRQ_AMIGA_EXTER defaults to shared,
* we could add a check here for the SA_SHIRQ flag but all drivers
* should be aware of sharing anyway.
*/
if (ami_servers[irq]) {
if (!(node = new_irq_node()))
return -ENOMEM;
node->handler = handler;
node->flags = flags;
node->dev_id = dev_id;
node->devname = devname;
node->next = NULL;
error = amiga_insert_irq(&ami_irq_list[irq], node);
} else {
ami_irq_list[irq]->handler = handler;
ami_irq_list[irq]->flags = flags;
ami_irq_list[irq]->dev_id = dev_id;
ami_irq_list[irq]->devname = devname;
}
/* enable the interrupt */
if (irq < IRQ_AMIGA_PORTS && !ami_ablecount[irq])
custom.intena = IF_SETCLR | amiga_intena_vals[irq];
return error;
}