diff options
| author | Joerg Roedel <joerg.roedel@amd.com> | 2009-11-20 14:31:51 +0100 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-11-27 11:45:49 +0100 |
| commit | bb52777ec4d736c2d7c4f037b32d4eeeb172ed89 (patch) | |
| tree | dfeed02c76169a92fd04e12145c72f9a0cbaf6f7 /arch/x86/include | |
| parent | bf3118c1276d27fe9e84aa42382da25ee0750777 (diff) | |
x86/amd-iommu: Add an index field to struct amd_iommu
This patch adds an index field to struct amd_iommu which can
be used to lookup it up in an array. This index will be used
in struct protection_domain to keep track which protection
domain has devices behind which IOMMU.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/amd_iommu_types.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/x86/include/asm/amd_iommu_types.h b/arch/x86/include/asm/amd_iommu_types.h index df5e9c8a856..ab3e7bf1af7 100644 --- a/arch/x86/include/asm/amd_iommu_types.h +++ b/arch/x86/include/asm/amd_iommu_types.h @@ -25,6 +25,11 @@ #include <linux/spinlock.h> /* + * Maximum number of IOMMUs supported + */ +#define MAX_IOMMUS 32 + +/* * some size calculation constants */ #define DEV_TABLE_ENTRY_SIZE 32 @@ -291,6 +296,9 @@ struct dma_ops_domain { struct amd_iommu { struct list_head list; + /* Index within the IOMMU array */ + int index; + /* locks the accesses to the hardware */ spinlock_t lock; @@ -357,6 +365,15 @@ struct amd_iommu { extern struct list_head amd_iommu_list; /* + * Array with pointers to each IOMMU struct + * The indices are referenced in the protection domains + */ +extern struct amd_iommu *amd_iommus[MAX_IOMMUS]; + +/* Number of IOMMUs present in the system */ +extern int amd_iommus_present; + +/* * Structure defining one entry in the device table */ struct dev_table_entry { |