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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2008-09-22 22:35:07 +0900
committerIngo Molnar <mingo@elte.hu>2008-09-22 16:47:50 +0200
commitd26dbc5cf94b0a28acc947285c3b54814a73cb2e (patch)
treeba6d44e5945b491166159fee791761ebe4b39134
parent832a90c30485117d65180cc9a8d9869c1b158570 (diff)
iommu: export iommu_area_reserve helper function
x86 has set_bit_string() that does the exact same thing that set_bit_area() in lib/iommu-helper.c does. This patch exports set_bit_area() in lib/iommu-helper.c as iommu_area_reserve(), converts GART, Calgary, and AMD IOMMU to use it. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--arch/x86/kernel/amd_iommu.c2
-rw-r--r--arch/x86/kernel/pci-calgary_64.c2
-rw-r--r--arch/x86/kernel/pci-gart_64.c2
-rw-r--r--include/linux/iommu-helper.h1
-rw-r--r--lib/iommu-helper.c5
5 files changed, 6 insertions, 6 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 6f7b9744573..70537d117a9 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -572,7 +572,7 @@ static void dma_ops_reserve_addresses(struct dma_ops_domain *dom,
if (start_page + pages > last_page)
pages = last_page - start_page;
- set_bit_string(dom->bitmap, start_page, pages);
+ iommu_area_reserve(dom->bitmap, start_page, pages);
}
static void dma_ops_free_pagetable(struct dma_ops_domain *dma_dom)
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index fe7695e4caa..080d1d27f37 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -261,7 +261,7 @@ static void iommu_range_reserve(struct iommu_table *tbl,
badbit, tbl, start_addr, npages);
}
- set_bit_string(tbl->it_map, index, npages);
+ iommu_area_reserve(tbl->it_map, index, npages);
spin_unlock_irqrestore(&tbl->it_lock, flags);
}
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index 508ef470b27..3dcb1ad86e3 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -827,7 +827,7 @@ void __init gart_iommu_init(void)
* Out of IOMMU space handling.
* Reserve some invalid pages at the beginning of the GART.
*/
- set_bit_string(iommu_gart_bitmap, 0, EMERGENCY_PAGES);
+ iommu_area_reserve(iommu_gart_bitmap, 0, EMERGENCY_PAGES);
agp_memory_reserved = iommu_size;
printk(KERN_INFO
diff --git a/include/linux/iommu-helper.h b/include/linux/iommu-helper.h
index 58f41107e4a..786539e432d 100644
--- a/include/linux/iommu-helper.h
+++ b/include/linux/iommu-helper.h
@@ -11,6 +11,7 @@ static inline unsigned long iommu_device_max_index(unsigned long size,
extern int iommu_is_span_boundary(unsigned int index, unsigned int nr,
unsigned long shift,
unsigned long boundary_size);
+extern void iommu_area_reserve(unsigned long *map, unsigned long i, int len);
extern unsigned long iommu_area_alloc(unsigned long *map, unsigned long size,
unsigned long start, unsigned int nr,
unsigned long shift,
diff --git a/lib/iommu-helper.c b/lib/iommu-helper.c
index a3b8d4c3f77..5d90074dca7 100644
--- a/lib/iommu-helper.c
+++ b/lib/iommu-helper.c
@@ -30,8 +30,7 @@ again:
return index;
}
-static inline void set_bit_area(unsigned long *map, unsigned long i,
- int len)
+void iommu_area_reserve(unsigned long *map, unsigned long i, int len)
{
unsigned long end = i + len;
while (i < end) {
@@ -64,7 +63,7 @@ again:
start = index + 1;
goto again;
}
- set_bit_area(map, index, nr);
+ iommu_area_reserve(map, index, nr);
}
return index;
}