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x86/amd-iommu: Introduce increase_address_space function

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This function will be used to increase the address space
size of a protection domain.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel
2009-09-02 15:38:40 +02:00
parent 04bfdd8406
commit 50020fb632
2 changed files with 31 additions and 0 deletions
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4
arch/x86/include/asm/amd_iommu_types.h
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@@ -160,6 +160,10 @@
((1ULL << PM_LEVEL_SHIFT((x))) - 1): \
(0xffffffffffffffffULL))
#define PM_LEVEL_INDEX(x, a) (((a) >> PM_LEVEL_SHIFT((x))) & 0x1ffULL)
#define PM_LEVEL_ENC(x) (((x) << 9) & 0xe00ULL)
#define PM_LEVEL_PDE(x, a) ((a) | PM_LEVEL_ENC((x)) | \
IOMMU_PTE_P | IOMMU_PTE_IR | IOMMU_PTE_IW)
#define IOMMU_PTE_L2_INDEX(address) (((address) >> 30) & 0x1ffULL)
#define IOMMU_PTE_L1_INDEX(address) (((address) >> 21) & 0x1ffULL)