Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy...

[pandora-kernel.git] / arch / sparc / kernel / sun4d_irq.c

diff --git a/arch/sparc/kernel/sun4d_irq.c b/arch/sparc/kernel/sun4d_irq.c
index ca656d9..cf1b8ba 100644 (file)
--- a/arch/sparc/kernel/sun4d_irq.c
+++ b/arch/sparc/kernel/sun4d_irq.c
@@ -6,7 +6,6 @@
  *  Heavily based on arch/sparc/kernel/irq.c.
  */
 
-#include <linux/config.h>
 #include <linux/errno.h>
 #include <linux/linkage.h>
 #include <linux/kernel_stat.h>
@@ -39,6 +38,7 @@
 #include <asm/sbus.h>
 #include <asm/sbi.h>
 #include <asm/cacheflush.h>
+#include <asm/irq_regs.h>
 
 /* If you trust current SCSI layer to handle different SCSI IRQs, enable this. I don't trust it... -jj */
 /* #define DISTRIBUTE_IRQS */
@@ -108,13 +108,13 @@ found_it: seq_printf(p, "%3d: ", i);
                               kstat_cpu(cpu_logical_map(x)).irqs[i]);
 #endif
                seq_printf(p, "%c %s",
-                       (action->flags & SA_INTERRUPT) ? '+' : ' ',
+                       (action->flags & IRQF_DISABLED) ? '+' : ' ',
                        action->name);
                action = action->next;
                for (;;) {
                        for (; action; action = action->next) {
                                seq_printf(p, ",%s %s",
-                                       (action->flags & SA_INTERRUPT) ? " +" : "",
+                                       (action->flags & IRQF_DISABLED) ? " +" : "",
                                        action->name);
                        }
                        if (!sbusl) break;
@@ -161,7 +161,7 @@ void sun4d_free_irq(unsigned int irq, void *dev_id)
                        printk("Trying to free free shared IRQ%d\n",irq);
                        goto out_unlock;
                }
-       } else if (action->flags & SA_SHIRQ) {
+       } else if (action->flags & IRQF_SHARED) {
                printk("Trying to free shared IRQ%d with NULL device ID\n", irq);
                goto out_unlock;
        }
@@ -199,6 +199,7 @@ extern void unexpected_irq(int, void *, struct pt_regs *);
 
 void sun4d_handler_irq(int irq, struct pt_regs * regs)
 {
+       struct pt_regs *old_regs;
        struct irqaction * action;
        int cpu = smp_processor_id();
        /* SBUS IRQ level (1 - 7) */
@@ -209,6 +210,7 @@ void sun4d_handler_irq(int irq, struct pt_regs * regs)
        
        cc_set_iclr(1 << irq);
        
+       old_regs = set_irq_regs(regs);
        irq_enter();
        kstat_cpu(cpu).irqs[irq]++;
        if (!sbusl) {
@@ -216,7 +218,7 @@ void sun4d_handler_irq(int irq, struct pt_regs * regs)
                if (!action)
                        unexpected_irq(irq, NULL, regs);
                do {
-                       action->handler(irq, action->dev_id, regs);
+                       action->handler(irq, action->dev_id);
                        action = action->next;
                } while (action);
        } else {
@@ -243,7 +245,7 @@ void sun4d_handler_irq(int irq, struct pt_regs * regs)
                                                if (!action)
                                                        unexpected_irq(irq, NULL, regs);
                                                do {
-                                                       action->handler(irq, action->dev_id, regs);
+                                                       action->handler(irq, action->dev_id);
                                                        action = action->next;
                                                } while (action);
                                                release_sbi(SBI2DEVID(sbino), slot);
@@ -251,6 +253,7 @@ void sun4d_handler_irq(int irq, struct pt_regs * regs)
                        }
        }
        irq_exit();
+       set_irq_regs(old_regs);
 }
 
 unsigned int sun4d_build_irq(struct sbus_dev *sdev, int irq)
@@ -273,7 +276,7 @@ unsigned int sun4d_sbint_to_irq(struct sbus_dev *sdev, unsigned int sbint)
 }
 
 int sun4d_request_irq(unsigned int irq,
-               irqreturn_t (*handler)(int, void *, struct pt_regs *),
+               irq_handler_t handler,
                unsigned long irqflags, const char * devname, void *dev_id)
 {
        struct irqaction *action, *tmp = NULL, **actionp;
@@ -299,13 +302,13 @@ int sun4d_request_irq(unsigned int irq,
        action = *actionp;
        
        if (action) {
-               if ((action->flags & SA_SHIRQ) && (irqflags & SA_SHIRQ)) {
+               if ((action->flags & IRQF_SHARED) && (irqflags & IRQF_SHARED)) {
                        for (tmp = action; tmp->next; tmp = tmp->next);
                } else {
                        ret = -EBUSY;
                        goto out_unlock;
                }
-               if ((action->flags & SA_INTERRUPT) ^ (irqflags & SA_INTERRUPT)) {
+               if ((action->flags & IRQF_DISABLED) ^ (irqflags & IRQF_DISABLED)) {
                        printk("Attempt to mix fast and slow interrupts on IRQ%d denied\n", irq);
                        ret = -EBUSY;
                        goto out_unlock;
@@ -467,7 +470,7 @@ static void sun4d_load_profile_irq(int cpu, unsigned int limit)
        bw_set_prof_limit(cpu, limit);
 }
 
-static void __init sun4d_init_timers(irqreturn_t (*counter_fn)(int, void *, struct pt_regs *))
+static void __init sun4d_init_timers(irq_handler_t counter_fn)
 {
        int irq;
        int cpu;
@@ -491,7 +494,7 @@ static void __init sun4d_init_timers(irqreturn_t (*counter_fn)(int, void *, stru
 
        irq = request_irq(TIMER_IRQ,
                          counter_fn,
-                         (SA_INTERRUPT | SA_STATIC_ALLOC),
+                         (IRQF_DISABLED | SA_STATIC_ALLOC),
                          "timer", NULL);
        if (irq) {
                prom_printf("time_init: unable to attach IRQ%d\n",TIMER_IRQ);
@@ -542,8 +545,11 @@ void __init sun4d_init_sbi_irq(void)
        nsbi = 0;
        for_each_sbus(sbus)
                nsbi++;
-       sbus_actions = (struct sbus_action *)kmalloc (nsbi * 8 * 4 * sizeof(struct sbus_action), GFP_ATOMIC);
-       memset (sbus_actions, 0, (nsbi * 8 * 4 * sizeof(struct sbus_action)));
+       sbus_actions = kzalloc (nsbi * 8 * 4 * sizeof(struct sbus_action), GFP_ATOMIC);
+       if (!sbus_actions) {
+               prom_printf("SUN4D: Cannot allocate sbus_actions, halting.\n");
+               prom_halt();
+       }
        for_each_sbus(sbus) {
 #ifdef CONFIG_SMP      
                extern unsigned char boot_cpu_id;
@@ -560,17 +566,6 @@ void __init sun4d_init_sbi_irq(void)
        }
 }
 
-static char *sun4d_irq_itoa(unsigned int irq)
-{
-       static char buff[16];
-       
-       if (irq < (1 << 5))
-               sprintf(buff, "%d", irq);
-       else
-               sprintf(buff, "%d,%x", sbus_to_pil[(irq >> 2) & 7], irq);
-       return buff;
-}
-
 void __init sun4d_init_IRQ(void)
 {
        local_irq_disable();
@@ -581,7 +576,6 @@ void __init sun4d_init_IRQ(void)
        BTFIXUPSET_CALL(clear_clock_irq, sun4d_clear_clock_irq, BTFIXUPCALL_NORM);
        BTFIXUPSET_CALL(clear_profile_irq, sun4d_clear_profile_irq, BTFIXUPCALL_NORM);
        BTFIXUPSET_CALL(load_profile_irq, sun4d_load_profile_irq, BTFIXUPCALL_NORM);
-       BTFIXUPSET_CALL(__irq_itoa, sun4d_irq_itoa, BTFIXUPCALL_NORM);
        sparc_init_timers = sun4d_init_timers;
 #ifdef CONFIG_SMP
        BTFIXUPSET_CALL(set_cpu_int, sun4d_set_cpu_int, BTFIXUPCALL_NORM);