From: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
To: linux-ia64@vger.kernel.org
Subject: [PATCH take3 5/12] Use dynamic irq for iosapic interrupts
Date: Tue, 17 Jul 2007 12:21:48 +0000 [thread overview]
Message-ID: <469CB45C.4040203@jp.fujitsu.com> (raw)
Use create_irq()/destroy_irq() for iosapic interrupts.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
arch/ia64/kernel/iosapic.c | 39 +++++++++++++++------------------------
1 files changed, 15 insertions(+), 24 deletions(-)
Index: linux-2.6.22/arch/ia64/kernel/iosapic.c
=================================--- linux-2.6.22.orig/arch/ia64/kernel/iosapic.c 2007-07-13 16:42:24.000000000 +0900
+++ linux-2.6.22/arch/ia64/kernel/iosapic.c 2007-07-13 16:43:44.000000000 +0900
@@ -533,12 +533,13 @@ static int iosapic_find_sharable_vector
static void __init
iosapic_reassign_vector (int vector)
{
- int new_vector;
+ int irq, new_vector;
if (!list_empty(&iosapic_intr_info[vector].rtes)) {
- new_vector = assign_irq_vector(AUTO_ASSIGN);
- if (new_vector < 0)
+ irq = create_irq();
+ if (irq < 0)
panic("%s: out of interrupt vectors!\n", __FUNCTION__);
+ new_vector = irq_to_vector(irq);
printk(KERN_INFO "Reassigning vector %d to %d\n",
vector, new_vector);
memcpy(&iosapic_intr_info[new_vector], &iosapic_intr_info[vector],
@@ -753,7 +754,7 @@ int
iosapic_register_intr (unsigned int gsi,
unsigned long polarity, unsigned long trigger)
{
- int vector, mask = 1, err;
+ int irq, vector, mask = 1, err;
unsigned int dest;
unsigned long flags;
struct iosapic_rte_info *rte;
@@ -773,12 +774,13 @@ iosapic_register_intr (unsigned int gsi,
}
/* If vector is running out, we try to find a sharable vector */
- vector = assign_irq_vector(AUTO_ASSIGN);
- if (vector < 0) {
+ irq = create_irq();
+ if (irq < 0) {
vector = iosapic_find_sharable_vector(trigger, polarity);
if (vector < 0)
goto unlock_iosapic_lock;
- }
+ } else
+ vector = irq_to_vector(irq);
spin_lock(&irq_desc[vector].lock);
dest = get_target_cpu(gsi, vector);
@@ -873,30 +875,18 @@ iosapic_unregister_intr (unsigned int gs
if (list_empty(&iosapic_intr_info[vector].rtes)) {
/* Sanity check */
BUG_ON(iosapic_intr_info[vector].count);
-
- /* Clear the interrupt controller descriptor */
- idesc->chip = &no_irq_type;
-
#ifdef CONFIG_SMP
/* Clear affinity */
cpus_setall(idesc->affinity);
#endif
-
/* Clear the interrupt information */
memset(&iosapic_intr_info[vector], 0,
sizeof(struct iosapic_intr_info));
iosapic_intr_info[vector].low32 |= IOSAPIC_MASK;
INIT_LIST_HEAD(&iosapic_intr_info[vector].rtes);
- if (idesc->action) {
- printk(KERN_ERR
- "interrupt handlers still exist on IRQ %u\n",
- irq);
- WARN_ON(1);
- }
-
- /* Free the interrupt vector */
- free_irq_vector(vector);
+ /* Destroy IRQ */
+ destroy_irq(irq);
}
out:
spin_unlock_irqrestore(&iosapic_lock, flags);
@@ -912,7 +902,7 @@ iosapic_register_platform_intr (u32 int_
{
static const char * const name[] = {"unknown", "PMI", "INIT", "CPEI"};
unsigned char delivery;
- int vector, mask = 0;
+ int irq, vector, mask = 0;
unsigned int dest = ((id << 8) | eid) & 0xffff;
switch (int_type) {
@@ -926,9 +916,10 @@ iosapic_register_platform_intr (u32 int_
delivery = IOSAPIC_PMI;
break;
case ACPI_INTERRUPT_INIT:
- vector = assign_irq_vector(AUTO_ASSIGN);
- if (vector < 0)
+ irq = create_irq();
+ if (irq < 0)
panic("%s: out of interrupt vectors!\n", __FUNCTION__);
+ vector = irq_to_vector(irq);
delivery = IOSAPIC_INIT;
break;
case ACPI_INTERRUPT_CPEI:
reply other threads:[~2007-07-17 12:21 UTC|newest]
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