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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2008-07-29 13:38:53 +0900
committerIngo Molnar <mingo@elte.hu>2008-07-29 12:12:48 +0200
commit8978b74253280d59e97cf49a3ec2c0cbccd5b801 (patch)
tree7cecd6951437f01f541178c1afc14d4e1d2e2b23 /include/asm-x86
parent35780c8ea7ad5c6d5483244d5f5bf37176fda86a (diff)
generic, x86: fix add iommu_num_pages helper function
This IOMMU helper function doesn't work for some architectures: http://marc.info/?l=linux-kernel&m=121699304403202&w=2 It also breaks POWER and SPARC builds: http://marc.info/?l=linux-kernel&m=121730388001890&w=2 Currently, only x86 IOMMUs use this so let's move it to x86 for now. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86')
-rw-r--r--include/asm-x86/iommu.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-x86/iommu.h b/include/asm-x86/iommu.h
index ecc8061904a..5f888cc5be4 100644
--- a/include/asm-x86/iommu.h
+++ b/include/asm-x86/iommu.h
@@ -7,6 +7,8 @@ extern struct dma_mapping_ops nommu_dma_ops;
extern int force_iommu, no_iommu;
extern int iommu_detected;
+extern unsigned long iommu_num_pages(unsigned long addr, unsigned long len);
+
#ifdef CONFIG_GART_IOMMU
extern int gart_iommu_aperture;
extern int gart_iommu_aperture_allowed;