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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 <[email protected]>
Signed-off-by: Yasuaki Ishimatsu <[email protected]>
Signed-off-by: Tony Luck <[email protected]>
This commit is contained in:
Yasuaki Ishimatsu 2007-07-17 21:22:33 +09:00 • committed by Tony Luck
commit 4994be1b3f
5 changed files with 113 additions and 42 deletions
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4
include/asm-ia64/hw_irq.h
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@ -92,14 +92,16 @@ extern __u8 isa_irq_to_vector_map[16];
struct irq_cfg {
ia64_vector vector;
cpumask_t domain;
};
extern spinlock_t vector_lock;
extern struct irq_cfg irq_cfg[NR_IRQS];
#define irq_to_domain(x) irq_cfg[(x)].domain
DECLARE_PER_CPU(int[IA64_NUM_VECTORS], vector_irq);
extern struct hw_interrupt_type irq_type_ia64_lsapic; /* CPU-internal interrupt controller */
extern int bind_irq_vector(int irq, int vector);
extern int bind_irq_vector(int irq, int vector, cpumask_t domain);
extern int assign_irq_vector (int irq); /* allocate a free vector */
extern void free_irq_vector (int vector);
extern int reserve_irq_vector (int vector);

9
include/asm-ia64/irq.h
View file

@ -14,8 +14,13 @@
#include <linux/types.h>
#include <linux/cpumask.h>
#define NR_IRQS 256
#define NR_IRQ_VECTORS NR_IRQS
#define NR_VECTORS 256
#if (NR_VECTORS + 32 * NR_CPUS) < 1024
#define NR_IRQS (NR_VECTORS + 32 * NR_CPUS)
#else
#define NR_IRQS 1024
#endif
static __inline__ int
irq_canonicalize (int irq)