#include <asm/system.h>
#include <asm/gt64120.h>
-asmlinkage inline void pci_intA(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
{
- do_IRQ(GT_INTA, regs);
-}
-
-asmlinkage inline void pci_intD(struct pt_regs *regs)
-{
- do_IRQ(GT_INTD, regs);
+ unsigned int pending = read_c0_status() & read_c0_cause();
+
+ if (pending & STATUSF_IP4) /* int2 hardware line (timer) */
+ do_IRQ(4);
+ else if (pending & STATUSF_IP2) /* int0 hardware line */
+ do_IRQ(GT_INTA);
+ else if (pending & STATUSF_IP5) /* int3 hardware line */
+ do_IRQ(GT_INTD);
+ else if (pending & STATUSF_IP6) /* int4 hardware line */
+ do_IRQ(6);
+ else if (pending & STATUSF_IP7) /* compare int */
+ do_IRQ(7);
+ else
+ spurious_interrupt();
}
static void disable_ev64120_irq(unsigned int irq_nr)
{
- unsigned long flags;
-
- local_irq_save(flags);
if (irq_nr >= 8) { // All PCI interrupts are on line 5 or 2
clear_c0_status(9 << 10);
} else {
clear_c0_status(1 << (irq_nr + 8));
}
- local_irq_restore(flags);
}
static void enable_ev64120_irq(unsigned int irq_nr)
{
- unsigned long flags;
-
- local_irq_save(flags);
if (irq_nr >= 8) // All PCI interrupts are on line 5 or 2
set_c0_status(9 << 10);
else
set_c0_status(1 << (irq_nr + 8));
- local_irq_restore(flags);
-}
-
-static unsigned int startup_ev64120_irq(unsigned int irq)
-{
- enable_ev64120_irq(irq);
- return 0; /* Never anything pending */
}
-#define shutdown_ev64120_irq disable_ev64120_irq
-#define mask_and_ack_ev64120_irq disable_ev64120_irq
-
static void end_ev64120_irq(unsigned int irq)
{
if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
enable_ev64120_irq(irq);
}
-static struct hw_interrupt_type ev64120_irq_type = {
+static struct irq_chip ev64120_irq_type = {
.typename = "EV64120",
- .startup = startup_ev64120_irq,
- .shutdown = shutdown_ev64120_irq,
- .enable = enable_ev64120_irq,
- .disable = disable_ev64120_irq,
- .ack = mask_and_ack_ev64120_irq,
+ .ack = disable_ev64120_irq,
+ .mask = disable_ev64120_irq,
+ .mask_ack = disable_ev64120_irq,
+ .unmask = enable_ev64120_irq,
.end = end_ev64120_irq,
- .set_affinity = NULL
};
void gt64120_irq_setup(void)
{
- extern asmlinkage void galileo_handle_int(void);
-
/*
* Clear all of the interrupts while we change the able around a bit.
*/
clear_c0_status(ST0_IM);
- /* Sets the exception_handler array. */
- set_except_vector(0, galileo_handle_int);
-
- local_irq_disable();
-
/*
* Enable timer. Other interrupts will be enabled as they are
* registered.
void __init arch_init_irq(void)
{
- int i;
-
- /* Let's initialize our IRQ descriptors */
- for (i = 0; i < NR_IRQS; i++) {
- irq_desc[i].status = 0;
- irq_desc[i].handler = &no_irq_type;
- irq_desc[i].action = NULL;
- irq_desc[i].depth = 0;
- spin_lock_init(&irq_desc[i].lock);
- }
-
gt64120_irq_setup();
}