* Lasat boards.
*/
#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
#include <linux/interrupt.h>
-#include <linux/kernel_stat.h>
+#include <linux/irq.h>
-#include <asm/bootinfo.h>
-#include <asm/irq.h>
+#include <asm/irq_cpu.h>
+#include <asm/lasat/lasat.h>
#include <asm/lasat/lasatint.h>
-#include <asm/time.h>
-#include <asm/gdb-stub.h>
-static volatile int *lasat_int_status = NULL;
-static volatile int *lasat_int_mask = NULL;
+#include <irq.h>
+
+static volatile int *lasat_int_status;
+static volatile int *lasat_int_mask;
static volatile int lasat_int_mask_shift;
void disable_lasat_irq(unsigned int irq_nr)
{
- unsigned long flags;
-
- local_irq_save(flags);
+ irq_nr -= LASAT_IRQ_BASE;
*lasat_int_mask &= ~(1 << irq_nr) << lasat_int_mask_shift;
- local_irq_restore(flags);
}
void enable_lasat_irq(unsigned int irq_nr)
{
- unsigned long flags;
-
- local_irq_save(flags);
+ irq_nr -= LASAT_IRQ_BASE;
*lasat_int_mask |= (1 << irq_nr) << lasat_int_mask_shift;
- local_irq_restore(flags);
-}
-
-static unsigned int startup_lasat_irq(unsigned int irq)
-{
- enable_lasat_irq(irq);
-
- return 0; /* never anything pending */
}
-#define shutdown_lasat_irq disable_lasat_irq
-
-#define mask_and_ack_lasat_irq disable_lasat_irq
-
-static void end_lasat_irq(unsigned int irq)
-{
- if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
- enable_lasat_irq(irq);
-}
-
-static struct hw_interrupt_type lasat_irq_type = {
- .typename = "Lasat",
- .startup = startup_lasat_irq,
- .shutdown = shutdown_lasat_irq,
- .enable = enable_lasat_irq,
- .disable = disable_lasat_irq,
- .ack = mask_and_ack_lasat_irq,
- .end = end_lasat_irq,
+static struct irq_chip lasat_irq_type = {
+ .name = "Lasat",
+ .ack = disable_lasat_irq,
+ .mask = disable_lasat_irq,
+ .mask_ack = disable_lasat_irq,
+ .unmask = enable_lasat_irq,
};
static inline int ls1bit32(unsigned int x)
return b;
}
-static unsigned long (* get_int_status)(void);
+static unsigned long (*get_int_status)(void);
static unsigned long get_int_status_100(void)
{
return int_status;
}
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
{
unsigned long int_status;
unsigned int cause = read_c0_cause();
int irq;
if (cause & CAUSEF_IP7) { /* R4000 count / compare IRQ */
- ll_timer_interrupt(7, regs);
+ do_IRQ(7);
return;
}
/* if int_status == 0, then the interrupt has already been cleared */
if (int_status) {
- irq = ls1bit32(int_status);
+ irq = LASAT_IRQ_BASE + ls1bit32(int_status);
- do_IRQ(irq, regs);
+ do_IRQ(irq);
}
}
+static struct irqaction cascade = {
+ .handler = no_action,
+ .name = "cascade",
+};
+
void __init arch_init_irq(void)
{
int i;
- switch (mips_machtype) {
- case MACH_LASAT_100:
- lasat_int_status = (void *)LASAT_INT_STATUS_REG_100;
- lasat_int_mask = (void *)LASAT_INT_MASK_REG_100;
- lasat_int_mask_shift = LASATINT_MASK_SHIFT_100;
- get_int_status = get_int_status_100;
- *lasat_int_mask = 0;
- break;
- case MACH_LASAT_200:
+ if (IS_LASAT_200()) {
lasat_int_status = (void *)LASAT_INT_STATUS_REG_200;
lasat_int_mask = (void *)LASAT_INT_MASK_REG_200;
lasat_int_mask_shift = LASATINT_MASK_SHIFT_200;
get_int_status = get_int_status_200;
*lasat_int_mask &= 0xffff;
- break;
- default:
- panic("arch_init_irq: mips_machtype incorrect");
+ } else {
+ lasat_int_status = (void *)LASAT_INT_STATUS_REG_100;
+ lasat_int_mask = (void *)LASAT_INT_MASK_REG_100;
+ lasat_int_mask_shift = LASATINT_MASK_SHIFT_100;
+ get_int_status = get_int_status_100;
+ *lasat_int_mask = 0;
}
- for (i = 0; i <= LASATINT_END; i++) {
- irq_desc[i].status = IRQ_DISABLED;
- irq_desc[i].action = 0;
- irq_desc[i].depth = 1;
- irq_desc[i].handler = &lasat_irq_type;
- }
+ mips_cpu_irq_init();
+
+ for (i = LASAT_IRQ_BASE; i <= LASAT_IRQ_END; i++)
+ set_irq_chip_and_handler(i, &lasat_irq_type, handle_level_irq);
+
+ setup_irq(LASAT_CASCADE_IRQ, &cascade);
}