fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / arch / mips / lasat / interrupt.c

diff --git a/arch/mips/lasat/interrupt.c b/arch/mips/lasat/interrupt.c
index 1148a2d..2affa5f 100644 (file)
--- a/arch/mips/lasat/interrupt.c
+++ b/arch/mips/lasat/interrupt.c
@@ -15,7 +15,7 @@
  *  with this program; if not, write to the Free Software Foundation, Inc.,
  *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  *
- * Routines for generic manipulation of the interrupts found on the 
+ * Routines for generic manipulation of the interrupts found on the
  * Lasat boards.
  */
 #include <linux/init.h>
@@ -27,58 +27,29 @@
 #include <asm/bootinfo.h>
 #include <asm/irq.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;
 static volatile int lasat_int_mask_shift;
 
-extern asmlinkage void lasatIRQ(void);
-
 void disable_lasat_irq(unsigned int irq_nr)
 {
-       unsigned long flags;
-
-       local_irq_save(flags);
        *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);
        *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 = {
-       "Lasat",
-       startup_lasat_irq,
-       shutdown_lasat_irq,
-       enable_lasat_irq,
-       disable_lasat_irq,
-       mask_and_ack_lasat_irq,
-       end_lasat_irq,
-       NULL
+static struct irq_chip lasat_irq_type = {
+       .typename = "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)
@@ -101,7 +72,7 @@ static unsigned long get_int_status_100(void)
        return *lasat_int_status & *lasat_int_mask;
 }
 
-static unsigned long get_int_status_200(void) 
+static unsigned long get_int_status_200(void)
 {
        unsigned long int_status;
 
@@ -110,18 +81,24 @@ static unsigned long get_int_status_200(void)
        return int_status;
 }
 
-void lasat_hw0_irqdispatch(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);
+               return;
+       }
+
        int_status = get_int_status();
 
        /* if int_status == 0, then the interrupt has already been cleared */
        if (int_status) {
                irq = ls1bit32(int_status);
 
-               do_IRQ(irq, regs);
+               do_IRQ(irq);
        }
 }
 
@@ -148,13 +125,6 @@ void __init arch_init_irq(void)
                panic("arch_init_irq: mips_machtype incorrect");
        }
 
-       /* Now safe to set the exception vector. */
-       set_except_vector(0, lasatIRQ);
-
-       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;
-       }
+       for (i = 0; i <= LASATINT_END; i++)
+               set_irq_chip_and_handler(i, &lasat_irq_type, handle_level_irq);
 }