aboutsummaryrefslogtreecommitdiffstats
path: root/arch/sparc64/kernel/irq.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc64/kernel/irq.c')
-rw-r--r--arch/sparc64/kernel/irq.c70
1 files changed, 26 insertions, 44 deletions
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c
index ad134bbc151c..f2668f2bed9c 100644
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -70,7 +70,7 @@ struct ino_bucket ivector_table[NUM_IVECS] __attribute__ ((aligned (SMP_CACHE_BY
*/
#define irq_work(__cpu) &(trap_block[(__cpu)].irq_worklist)
-static struct irqaction *irq_action[NR_IRQS+1];
+static struct irqaction *irq_action[NR_IRQS];
/* This only synchronizes entities which modify IRQ handler
* state and some selected user-level spots that want to
@@ -116,12 +116,9 @@ int show_interrupts(struct seq_file *p, void *v)
kstat_cpu(j).irqs[i]);
}
#endif
- seq_printf(p, " %s:%lx", action->name,
- get_ino_in_irqaction(action));
- for (action = action->next; action; action = action->next) {
- seq_printf(p, ", %s:%lx", action->name,
- get_ino_in_irqaction(action));
- }
+ seq_printf(p, " %s", action->name);
+ for (action = action->next; action; action = action->next)
+ seq_printf(p, ", %s", action->name);
seq_putc(p, '\n');
}
out_unlock:
@@ -245,48 +242,47 @@ void disable_irq(unsigned int irq)
}
}
-static void build_irq_error(const char *msg, unsigned int ino, int pil, int inofixup,
+static void build_irq_error(const char *msg, unsigned int ino, int inofixup,
unsigned long iclr, unsigned long imap,
struct ino_bucket *bucket)
{
- prom_printf("IRQ: INO %04x (%d:%016lx:%016lx) --> "
- "(%d:%d:%016lx:%016lx), halting...\n",
- ino, bucket->pil, bucket->iclr, bucket->imap,
- pil, inofixup, iclr, imap);
+ prom_printf("IRQ: INO %04x (%016lx:%016lx) --> "
+ "(%d:%016lx:%016lx), halting...\n",
+ ino, bucket->iclr, bucket->imap,
+ inofixup, iclr, imap);
prom_halt();
}
-unsigned int build_irq(int pil, int inofixup, unsigned long iclr, unsigned long imap)
+unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap)
{
struct ino_bucket *bucket;
int ino;
- BUG_ON(pil == 0);
BUG_ON(tlb_type == hypervisor);
/* RULE: Both must be specified in all other cases. */
if (iclr == 0UL || imap == 0UL) {
- prom_printf("Invalid build_irq %d %d %016lx %016lx\n",
- pil, inofixup, iclr, imap);
+ prom_printf("Invalid build_irq %d %016lx %016lx\n",
+ inofixup, iclr, imap);
prom_halt();
}
ino = (upa_readl(imap) & (IMAP_IGN | IMAP_INO)) + inofixup;
if (ino > NUM_IVECS) {
- prom_printf("Invalid INO %04x (%d:%d:%016lx:%016lx)\n",
- ino, pil, inofixup, iclr, imap);
+ prom_printf("Invalid INO %04x (%d:%016lx:%016lx)\n",
+ ino, inofixup, iclr, imap);
prom_halt();
}
bucket = &ivector_table[ino];
if (bucket->flags & IBF_ACTIVE)
build_irq_error("IRQ: Trying to build active INO bucket.\n",
- ino, pil, inofixup, iclr, imap, bucket);
+ ino, inofixup, iclr, imap, bucket);
if (bucket->irq_info) {
if (bucket->imap != imap || bucket->iclr != iclr)
build_irq_error("IRQ: Trying to reinit INO bucket.\n",
- ino, pil, inofixup, iclr, imap, bucket);
+ ino, inofixup, iclr, imap, bucket);
goto out;
}
@@ -302,14 +298,13 @@ unsigned int build_irq(int pil, int inofixup, unsigned long iclr, unsigned long
*/
bucket->imap = imap;
bucket->iclr = iclr;
- bucket->pil = pil;
bucket->flags = 0;
out:
return __irq(bucket);
}
-unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino, int pil, unsigned char flags)
+unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino, unsigned char flags)
{
struct ino_bucket *bucket;
unsigned long sysino;
@@ -328,7 +323,6 @@ unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino, int pil, unsign
bucket->imap = ~0UL - sysino;
bucket->iclr = ~0UL - sysino;
- bucket->pil = pil;
bucket->flags = flags;
bucket->irq_info = kzalloc(sizeof(struct irq_desc), GFP_ATOMIC);
@@ -356,16 +350,12 @@ static void atomic_bucket_insert(struct ino_bucket *bucket)
static int check_irq_sharing(int pil, unsigned long irqflags)
{
- struct irqaction *action, *tmp;
+ struct irqaction *action;
action = *(irq_action + pil);
if (action) {
- if ((action->flags & SA_SHIRQ) && (irqflags & SA_SHIRQ)) {
- for (tmp = action; tmp->next; tmp = tmp->next)
- ;
- } else {
+ if (!(action->flags & SA_SHIRQ) || !(irqflags & SA_SHIRQ))
return -EBUSY;
- }
}
return 0;
}
@@ -425,12 +415,12 @@ int request_irq(unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_
* installing a new handler, but is this really a problem,
* only the sysadmin is able to do this.
*/
- rand_initialize_irq(irq);
+ rand_initialize_irq(PIL_DEVICE_IRQ);
}
spin_lock_irqsave(&irq_action_lock, flags);
- if (check_irq_sharing(bucket->pil, irqflags)) {
+ if (check_irq_sharing(PIL_DEVICE_IRQ, irqflags)) {
spin_unlock_irqrestore(&irq_action_lock, flags);
return -EBUSY;
}
@@ -454,7 +444,7 @@ int request_irq(unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_
put_ino_in_irqaction(action, irq);
put_smpaff_in_irqaction(action, CPU_MASK_NONE);
- append_irq_action(bucket->pil, action);
+ append_irq_action(PIL_DEVICE_IRQ, action);
enable_irq(irq);
@@ -478,16 +468,15 @@ EXPORT_SYMBOL(request_irq);
static struct irqaction *unlink_irq_action(unsigned int irq, void *dev_id)
{
- struct ino_bucket *bucket = __bucket(irq);
struct irqaction *action, **pp;
- pp = irq_action + bucket->pil;
+ pp = irq_action + PIL_DEVICE_IRQ;
action = *pp;
if (unlikely(!action))
return NULL;
if (unlikely(!action->handler)) {
- printk("Freeing free IRQ %d\n", bucket->pil);
+ printk("Freeing free IRQ %d\n", PIL_DEVICE_IRQ);
return NULL;
}
@@ -648,7 +637,7 @@ static void process_bucket(struct ino_bucket *bp, struct pt_regs *regs)
/* Test and add entropy */
if (random & SA_SAMPLE_RANDOM)
- add_interrupt_randomness(bp->pil);
+ add_interrupt_randomness(PIL_DEVICE_IRQ);
out:
bp->flags &= ~IBF_INPROGRESS;
}
@@ -691,7 +680,7 @@ void handler_irq(int irq, struct pt_regs *regs)
while (bp) {
struct ino_bucket *nbp = __bucket(bp->irq_chain);
- kstat_this_cpu.irqs[bp->pil]++;
+ kstat_this_cpu.irqs[bp->virt_irq]++;
bp->irq_chain = 0;
process_bucket(bp, regs);
@@ -817,16 +806,9 @@ static void distribute_irqs(void)
spin_lock_irqsave(&irq_action_lock, flags);
cpu = 0;
- /*
- * Skip the timer at [0], and very rare error/power intrs at [15].
- * Also level [12], it causes problems on Ex000 systems.
- */
for (level = 1; level < NR_IRQS; level++) {
struct irqaction *p = irq_action[level];
- if (level == 12)
- continue;
-
while(p) {
cpu = retarget_one_irq(p, cpu);
p = p->next;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.