Merge branch 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[linux-2.6-omap-h63xx.git] / drivers / pci / intr_remapping.c

diff --git a/drivers/pci/intr_remapping.c b/drivers/pci/intr_remapping.c
index 23372c811159610838da7005f08828af874ae2bb..2de5a3238c947be89213119d9cf468d2fa59e11d 100644 (file)
--- a/drivers/pci/intr_remapping.c
+++ b/drivers/pci/intr_remapping.c
@@ -5,7 +5,7 @@
 #include <linux/pci.h>
 #include <linux/irq.h>
 #include <asm/io_apic.h>
-#include "intel-iommu.h"
+#include <linux/intel-iommu.h>
 #include "intr_remapping.h"
 
 static struct ioapic_scope ir_ioapic[MAX_IO_APICS];
@@ -19,96 +19,17 @@ 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;
-
-       desc = irq_to_desc(irq);
-
-       BUG_ON(!desc);
-
-       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);
-#else
 static struct irq_2_iommu irq_2_iommuX[NR_IRQS];
-#endif
 
 static struct irq_2_iommu *irq_2_iommu(unsigned int irq)
 {
-       if (irq < nr_irqs)
-               return &irq_2_iommuX[irq];
-
-       return NULL;
+       return (irq < nr_irqs) ? irq_2_iommuX + irq : NULL;
 }
+
 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);
 
@@ -165,11 +86,9 @@ 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.
@@ -255,11 +174,8 @@ int set_irte_irq(int irq, struct intel_iommu *iommu, u16 index, u16 subhandle)
        struct irq_2_iommu *irq_iommu;
 
        spin_lock(&irq_2_ir_lock);
-       irq_iommu = valid_irq_2_iommu(irq);
-       if (!irq_iommu) {
-               spin_unlock(&irq_2_ir_lock);
-               return -1;
-       }
+
+       irq_iommu = irq_2_iommu_alloc(irq);
 
        irq_iommu->iommu = iommu;
        irq_iommu->irte_index = index;