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[IA64] Add mapping table between irq and vector

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Add mapping tables between irqs and vectors, and its management code.
This is necessary for supporting multiple vector domain because 1:1
mapping between irq and vector will be changed to n:1.

The irq == vector relationship between irqs and vectors is explicitly
remained for percpu interrupts, platform interrupts, isa IRQs and
vectors assigned using assign_irq_vector() because some programs might
depend on it.

And I should consider the following problem.

When pci drivers enabled/disabled devices dynamically, its irq number
is changed to the different one. Therefore, suspend/resume code may
happen problem.

To fix this problem, I bound gsi to irq.

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 09:51:49 -07:00
committed by Tony Luck
parent f8c087f31e
commit e1b30a3928
5 changed files with 218 additions and 63 deletions
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include/asm-ia64/hw_irq.h
+13 -2
View File
@@ -90,13 +90,24 @@ enum {
extern __u8 isa_irq_to_vector_map[16];
#define isa_irq_to_vector(x) isa_irq_to_vector_map[(x)]
struct irq_cfg {
ia64_vector vector;
};
extern spinlock_t vector_lock;
extern struct irq_cfg irq_cfg[NR_IRQS];
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 assign_irq_vector (int irq); /* allocate a free vector */
extern void free_irq_vector (int vector);
extern int reserve_irq_vector (int vector);
extern void __setup_vector_irq(int cpu);
extern void ia64_send_ipi (int cpu, int vector, int delivery_mode, int redirect);
extern void register_percpu_irq (ia64_vector vec, struct irqaction *action);
extern int check_irq_used (int irq);
extern void destroy_and_reserve_irq (unsigned int irq);
static inline void ia64_resend_irq(unsigned int vector)
{
@@ -113,7 +124,7 @@ extern irq_desc_t irq_desc[NR_IRQS];
static inline unsigned int
__ia64_local_vector_to_irq (ia64_vector vec)
{
return (unsigned int) vec;
return __get_cpu_var(vector_irq)[vec];
}
#endif
@@ -131,7 +142,7 @@ __ia64_local_vector_to_irq (ia64_vector vec)
static inline ia64_vector
irq_to_vector (int irq)
{
return (ia64_vector) irq;
return irq_cfg[irq].vector;
}
/*