diff options
| author | Joerg Roedel | 2009-08-26 15:26:30 +0200 |
|---|---|---|
| committer | Joerg Roedel | 2009-09-03 16:15:42 +0200 |
| commit | 0feae533ddebe02cda6ccce5cac7349b446776a8 (patch) | |
| tree | d9c82d7ebec45d96194aeaf27acfbbd2015545ac /arch/x86/include/asm/amd_iommu_types.h | |
| parent | x86/amd-iommu: Add core functions for pd allocation/freeing (diff) | |
| download | kernel-qcow2-linux-0feae533ddebe02cda6ccce5cac7349b446776a8.tar.gz kernel-qcow2-linux-0feae533ddebe02cda6ccce5cac7349b446776a8.tar.xz kernel-qcow2-linux-0feae533ddebe02cda6ccce5cac7349b446776a8.zip | |
x86/amd-iommu: Add passthrough mode initialization functions
When iommu=pt is passed on kernel command line the devices
should run untranslated. This requires the allocation of a
special domain for that purpose. This patch implements the
allocation and initialization path for iommu=pt.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch/x86/include/asm/amd_iommu_types.h')
| -rw-r--r-- | arch/x86/include/asm/amd_iommu_types.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/include/asm/amd_iommu_types.h b/arch/x86/include/asm/amd_iommu_types.h index 0c878caaa0a2..49f7453bff76 100644 --- a/arch/x86/include/asm/amd_iommu_types.h +++ b/arch/x86/include/asm/amd_iommu_types.h @@ -143,6 +143,7 @@ #define EVT_BUFFER_SIZE 8192 /* 512 entries */ #define EVT_LEN_MASK (0x9ULL << 56) +#define PAGE_MODE_NONE 0x00 #define PAGE_MODE_1_LEVEL 0x01 #define PAGE_MODE_2_LEVEL 0x02 #define PAGE_MODE_3_LEVEL 0x03 @@ -194,6 +195,9 @@ #define PD_DMA_OPS_MASK (1UL << 0) /* domain used for dma_ops */ #define PD_DEFAULT_MASK (1UL << 1) /* domain is a default dma_ops domain for an IOMMU */ +#define PD_PASSTHROUGH_MASK (1UL << 2) /* domain has no page + translation */ + extern bool amd_iommu_dump; #define DUMP_printk(format, arg...) \ do { \ |