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[IA64] Add support for vector domain

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Add fundamental support for multiple vector domain. There still exists
only one vector domain even with this patch. IRQ migration across
domain is not supported yet by this patch.

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>
This commit is contained in:
Yasuaki Ishimatsu
2007-07-17 21:22:33 +09:00
committed by Tony Luck
parent e1b30a3928
commit 4994be1b3f
5 changed files with 113 additions and 42 deletions
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9
arch/ia64/kernel/msi_ia64.c
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@@ -52,6 +52,11 @@ static void ia64_set_msi_irq_affinity(unsigned int irq, cpumask_t cpu_mask)
struct msi_msg msg;
u32 addr;
/* IRQ migration across domain is not supported yet */
cpus_and(cpu_mask, cpu_mask, irq_to_domain(irq));
if (cpus_empty(cpu_mask))
return;
read_msi_msg(irq, &msg);
addr = msg.address_lo;
@@ -69,13 +74,15 @@ int ia64_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc)
struct msi_msg msg;
unsigned long dest_phys_id;
int irq, vector;
cpumask_t mask;
irq = create_irq();
if (irq < 0)
return irq;
set_irq_msi(irq, desc);
dest_phys_id = cpu_physical_id(first_cpu(cpu_online_map));
cpus_and(mask, irq_to_domain(irq), cpu_online_map);
dest_phys_id = cpu_physical_id(first_cpu(mask));
vector = irq_to_vector(irq);
msg.address_hi = 0;