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[PATCH] PCI: per-platform IA64_{FIRST,LAST}_DEVICE_VECTOR definitions

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Abstract IA64_FIRST_DEVICE_VECTOR/IA64_LAST_DEVICE_VECTOR since SN platforms
use a subset of the IA64 range.  Implement this by making the above macros
global variables which the platform can override in it setup code.

Also add a reserve_irq_vector() routine used by SN to mark a vector's as
in-use when that weren't allocated through assign_irq_vector().

Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Mark Maule
2006-04-14 16:03:49 -05:00
committed by Greg Kroah-Hartman
parent fd58e55fcf
commit 10083072bf
4 changed files with 43 additions and 4 deletions
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19
arch/ia64/kernel/irq_ia64.c
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@ -46,6 +46,10 @@
#define IRQ_DEBUG 0
/* These can be overridden in platform_irq_init */
int ia64_first_device_vector = IA64_DEF_FIRST_DEVICE_VECTOR;
int ia64_last_device_vector = IA64_DEF_LAST_DEVICE_VECTOR;
/* default base addr of IPI table */
void __iomem *ipi_base_addr = ((void __iomem *)
(__IA64_UNCACHED_OFFSET | IA64_IPI_DEFAULT_BASE_ADDR));
@ -60,7 +64,7 @@ __u8 isa_irq_to_vector_map[16] = {
};
EXPORT_SYMBOL(isa_irq_to_vector_map);
static unsigned long ia64_vector_mask[BITS_TO_LONGS(IA64_NUM_DEVICE_VECTORS)];
static unsigned long ia64_vector_mask[BITS_TO_LONGS(IA64_MAX_DEVICE_VECTORS)];
int
assign_irq_vector (int irq)
@ -89,6 +93,19 @@ free_irq_vector (int vector)
printk(KERN_WARNING "%s: double free!\n", __FUNCTION__);
}
int
reserve_irq_vector (int vector)
{
int pos;
if (vector < IA64_FIRST_DEVICE_VECTOR ||
vector > IA64_LAST_DEVICE_VECTOR)
return -EINVAL;
pos = vector - IA64_FIRST_DEVICE_VECTOR;
return test_and_set_bit(pos, ia64_vector_mask);
}
#ifdef CONFIG_SMP
# define IS_RESCHEDULE(vec) (vec == IA64_IPI_RESCHEDULE)
#else