diff options
| author | Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> | 2007-07-17 14:21:48 +0200 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2007-07-17 18:50:44 +0200 |
| commit | eb21ab24955ee025434ad09cd8e5e1a74c798777 (patch) | |
| tree | ef50e56b1bde28d6f9fffb7319ffcf49484cdc11 /arch/ia64/kernel | |
| parent | [IA64] Use per iosapic lock for indirect iosapic register access (diff) | |
| download | linux-eb21ab24955ee025434ad09cd8e5e1a74c798777.tar.xz linux-eb21ab24955ee025434ad09cd8e5e1a74c798777.zip | |
[IA64] Use dynamic irq for iosapic interrupts
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>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/kernel')
| -rw-r--r-- | arch/ia64/kernel/iosapic.c | 39 |
1 files changed, 15 insertions, 24 deletions
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c index 29fea0a8c2c6..4c531953e2e1 100644 --- a/arch/ia64/kernel/iosapic.c +++ b/arch/ia64/kernel/iosapic.c @@ -533,12 +533,13 @@ static int iosapic_find_sharable_vector (unsigned long trigger, 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 gsi) 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_type, unsigned int gsi, { 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_type, unsigned int gsi, 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: |