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genirq: remove sparse irq code

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This code is not ready, but we need to rip it out instead of rebasing
as we would lose the APIC/IO_APIC unification otherwise.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner
2008-10-15 14:16:55 +02:00
committed by Ingo Molnar
parent c6b7674f32
commit 2cc21ef843
9 changed files with 11 additions and 439 deletions
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75
drivers/pci/intr_remapping.c
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@@ -19,78 +19,6 @@ struct irq_2_iommu {
u8 irte_mask;
};
#ifdef CONFIG_HAVE_SPARSE_IRQ
static struct irq_2_iommu *irq_2_iommuX;
/* fill one page ? */
static int nr_irq_2_iommu = 0x100;
static int irq_2_iommu_index;
DEFINE_DYN_ARRAY(irq_2_iommuX, sizeof(struct irq_2_iommu), nr_irq_2_iommu, PAGE_SIZE, NULL);
extern void *__alloc_bootmem_nopanic(unsigned long size,
unsigned long align,
unsigned long goal);
static struct irq_2_iommu *get_one_free_irq_2_iommu(int not_used)
{
struct irq_2_iommu *iommu;
unsigned long total_bytes;
if (irq_2_iommu_index >= nr_irq_2_iommu) {
/*
* we run out of pre-allocate ones, allocate more
*/
printk(KERN_DEBUG "try to get more irq_2_iommu %d\n", nr_irq_2_iommu);
total_bytes = sizeof(struct irq_2_iommu)*nr_irq_2_iommu;
if (after_bootmem)
iommu = kzalloc(total_bytes, GFP_ATOMIC);
else
iommu = __alloc_bootmem_nopanic(total_bytes, PAGE_SIZE, 0);
if (!iommu)
panic("can not get more irq_2_iommu\n");
irq_2_iommuX = iommu;
irq_2_iommu_index = 0;
}
iommu = &irq_2_iommuX[irq_2_iommu_index];
irq_2_iommu_index++;
return iommu;
}
static struct irq_2_iommu *irq_2_iommu(unsigned int irq)
{
struct irq_desc *desc;
desc = irq_to_desc(irq);
BUG_ON(!desc);
return desc->irq_2_iommu;
}
static struct irq_2_iommu *irq_2_iommu_alloc(unsigned int irq)
{
struct irq_desc *desc;
struct irq_2_iommu *irq_iommu;
/*
* alloc irq desc if not allocated already.
*/
desc = irq_to_desc_alloc(irq);
irq_iommu = desc->irq_2_iommu;
if (!irq_iommu)
desc->irq_2_iommu = get_one_free_irq_2_iommu(irq);
return desc->irq_2_iommu;
}
#else /* !CONFIG_HAVE_SPARSE_IRQ */
#ifdef CONFIG_HAVE_DYN_ARRAY
static struct irq_2_iommu *irq_2_iommuX;
DEFINE_DYN_ARRAY(irq_2_iommuX, sizeof(struct irq_2_iommu), nr_irqs, PAGE_SIZE, NULL);
@@ -109,7 +37,6 @@ static struct irq_2_iommu *irq_2_iommu_alloc(unsigned int irq)
{
return irq_2_iommu(irq);
}
#endif
static DEFINE_SPINLOCK(irq_2_ir_lock);
@@ -166,11 +93,9 @@ int alloc_irte(struct intel_iommu *iommu, int irq, u16 count)
if (!count)
return -1;
#ifndef CONFIG_HAVE_SPARSE_IRQ
/* protect irq_2_iommu_alloc later */
if (irq >= nr_irqs)
return -1;
#endif
/*
* start the IRTE search from index 0.