int bvme6000_request_irq(unsigned int irq,
irqreturn_t (*handler)(int, void *, struct pt_regs *),
unsigned long flags, const char *devname, void *dev_id)
{
if (irq > 255) {
printk("%s: Incorrect IRQ %d from %s\n", __FUNCTION__, irq, devname);
return -ENXIO;
}
#if 0
/* Nothing special about auto-vectored devices for the BVME6000,
* but treat it specially to avoid changes elsewhere.
*/
if (irq >= VEC_INT1 && irq <= VEC_INT7)
return cpu_request_irq(irq - VEC_SPUR, handler, flags,
devname, dev_id);
#endif
if (!(irq_tab[irq].flags & IRQ_FLG_STD)) {
if (irq_tab[irq].flags & IRQ_FLG_LOCK) {
printk("%s: IRQ %d from %s is not replaceable\n",
__FUNCTION__, irq, irq_tab[irq].devname);
return -EBUSY;
}
if (flags & IRQ_FLG_REPLACE) {
printk("%s: %s can't replace IRQ %d from %s\n",
__FUNCTION__, devname, irq, irq_tab[irq].devname);
return -EBUSY;
}
}
irq_tab[irq].handler = handler;
irq_tab[irq].flags = flags;
irq_tab[irq].dev_id = dev_id;
irq_tab[irq].devname = devname;
return 0;
}
void __init via_register_interrupts(void)
{
if (via_alt_mapping) {
cpu_request_irq(IRQ_AUTO_1, via1_irq,
IRQ_FLG_LOCK|IRQ_FLG_FAST, "software",
(void *) via1);
cpu_request_irq(IRQ_AUTO_6, via1_irq,
IRQ_FLG_LOCK|IRQ_FLG_FAST, "via1",
(void *) via1);
} else {
cpu_request_irq(IRQ_AUTO_1, via1_irq,
IRQ_FLG_LOCK|IRQ_FLG_FAST, "via1",
(void *) via1);
#if 0 /* interferes with serial on some machines */
if (!psc_present) {
cpu_request_irq(IRQ_AUTO_6, mac_bang, IRQ_FLG_LOCK,
"Off Switch", mac_bang);
}
#endif
}
cpu_request_irq(IRQ_AUTO_2, via2_irq, IRQ_FLG_LOCK|IRQ_FLG_FAST,
"via2", (void *) via2);
if (!psc_present) {
cpu_request_irq(IRQ_AUTO_4, mac_scc_dispatch, IRQ_FLG_LOCK,
"scc", mac_scc_dispatch);
}
request_irq(IRQ_MAC_NUBUS, via_nubus_irq, IRQ_FLG_LOCK|IRQ_FLG_FAST,
"nubus", (void *) via2);
}
void mac_init_IRQ(void)
{
int i;
#ifdef DEBUG_MACINTS
printk("mac_init_IRQ(): Setting things up...\n");
#endif
/* Initialize the IRQ handler lists. Initially each list is empty, */
for (i = 0; i < NUM_MAC_SOURCES; i++) {
mac_irq_list[i] = NULL;
}
scc_mask = 0;
/* Make sure the SONIC interrupt is cleared or things get ugly */
#ifdef SHUTUP_SONIC
printk("Killing onboard sonic... ");
/* This address should hopefully be mapped already */
if (hwreg_present((void*)(0x50f0a000))) {
*(long *)(0x50f0a014) = 0x7fffL;
*(long *)(0x50f0a010) = 0L;
}
printk("Done.\n");
#endif /* SHUTUP_SONIC */
/*
* Now register the handlers for the master IRQ handlers
* at levels 1-7. Most of the work is done elsewhere.
*/
if (oss_present) {
oss_register_interrupts();
} else {
via_register_interrupts();
}
if (psc_present) psc_register_interrupts();
if (baboon_present) baboon_register_interrupts();
iop_register_interrupts();
cpu_request_irq(7, mac_nmi_handler, IRQ_FLG_LOCK, "NMI",
mac_nmi_handler);
#ifdef DEBUG_MACINTS
printk("mac_init_IRQ(): Done!\n");
#endif
}
void sun3_init_IRQ(void)
{
int i;
*sun3_intreg = 1;
for(i = 0; i < SYS_IRQS; i++)
{
if(dev_names[i])
cpu_request_irq(i, sun3_default_handler[i], 0,
dev_names[i], NULL);
}
for(i = 0; i < 192; i++)
sun3_vechandler[i] = NULL;
sun3_vechandler[191] = sun3_vec255;
}
int sun3_request_irq(unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_regs *),
unsigned long flags, const char *devname, void *dev_id)
{
if(irq < SYS_IRQS) {
if(sun3_inthandler[irq] != NULL) {
printk("sun3_request_irq: request for irq %d -- already taken!\n", irq);
return 1;
}
sun3_inthandler[irq] = handler;
dev_ids[irq] = dev_id;
dev_names[irq] = devname;
/* setting devname would be nice */
cpu_request_irq(irq, sun3_default_handler[irq], 0, devname,
NULL);
return 0;
} else {
if((irq >= 64) && (irq <= 255)) {
int vec;
vec = irq - 64;
if(sun3_vechandler[vec] != NULL) {
printk("sun3_request_irq: request for vec %d -- already taken!\n", irq);
return 1;
}
sun3_vechandler[vec] = handler;
vec_ids[vec] = dev_id;
vec_names[vec] = devname;
vec_ints[vec] = 0;
return 0;
}
}
printk("sun3_request_irq: invalid irq %d\n", irq);
return 1;
}
/**
* @brief Request an IRQ.
* @param irq IRQ vector which is to be requested.
* @param vector IRQ handler.
* @param flags IRQ flags.
* @param priv Private IRQ data.
*/
int irq_request(int irq, irq_vector_t vector, unsigned long flags,
void *priv)
{
struct irq_data *data;
int err;
#ifdef CONFIG_IRQ_THREAD
struct irq_thread_data *idata;
if(test_bit(IRQ_THREADED_FLAG, &flags)) {
idata = kzalloc(sizeof(*data));
if(!idata)
return -ENOMEM;
data = &idata->idata;
err = irq_request_threaded_irq(idata);
if(err) {
kfree(idata);
return err;
}
} else {
data = kzalloc(sizeof(*data));
}
#else
data = kzalloc(sizeof(*data));
#endif
if(!data)
return -ENOMEM;
data->irq = irq;
data->handler = vector;
data->flags = flags;
data->private_data = priv;
data->chip = arch_get_irq_chip();
err = irq_chip_add_irq(data->chip, data);
irq_store_data(irq, data);
cpu_request_irq(data);
set_bit(IRQ_ENABLE_FLAG, &data->flags);
return err;
}
int mac_request_irq(unsigned int irq,
irqreturn_t (*handler)(int, void *, struct pt_regs *),
unsigned long flags, const char *devname, void *dev_id)
{
irq_node_t *node;
#ifdef DEBUG_MACINTS
printk ("%s: irq %d requested for %s\n", __FUNCTION__, irq, devname);
#endif
if (irq < VIA1_SOURCE_BASE) {
return cpu_request_irq(irq, handler, flags, devname, dev_id);
}
if (irq >= NUM_MAC_SOURCES) {
printk ("%s: unknown irq %d requested by %s\n",
__FUNCTION__, irq, devname);
}
/* Get a node and stick it onto the right list */
if (!(node = new_irq_node())) return -ENOMEM;
node->handler = handler;
node->flags = flags;
node->dev_id = dev_id;
node->devname = devname;
node->next = NULL;
mac_insert_irq(&mac_irq_list[irq], node);
/* Now enable the IRQ source */
mac_enable_irq(irq);
return 0;
}