diff options
| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2016-08-23 13:52:32 -0500 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2016-09-05 12:41:46 +0200 |
| commit | 3928aa3f5775fc4e40117077e97d73d8526039c9 (patch) | |
| tree | 4694f5be6a1013a1c159425f0df465b48034435b /drivers/iommu/amd_iommu_types.h | |
| parent | 29b4817d4018df78086157ea3a55c1d9424a7cfc (diff) | |
iommu/amd: Detect and enable guest vAPIC support
This patch introduces a new IOMMU driver parameter, amd_iommu_guest_ir,
which can be used to specify different interrupt remapping mode for
passthrough devices to VM guest:
* legacy: Legacy interrupt remapping (w/ 32-bit IRTE)
* vapic : Guest vAPIC interrupt remapping (w/ GA mode 128-bit IRTE)
Note that in vapic mode, it can also supports legacy interrupt remapping
for non-passthrough devices with the 128-bit IRTE.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/amd_iommu_types.h')
| -rw-r--r-- | drivers/iommu/amd_iommu_types.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h index caf5e3822715..3d1fc37b051b 100644 --- a/drivers/iommu/amd_iommu_types.h +++ b/drivers/iommu/amd_iommu_types.h @@ -92,6 +92,7 @@ #define FEATURE_GA (1ULL<<7) #define FEATURE_HE (1ULL<<8) #define FEATURE_PC (1ULL<<9) +#define FEATURE_GAM_VAPIC (1ULL<<21) #define FEATURE_PASID_SHIFT 32 #define FEATURE_PASID_MASK (0x1fULL << FEATURE_PASID_SHIFT) @@ -146,6 +147,8 @@ #define CONTROL_PPFINT_EN 0x0eULL #define CONTROL_PPR_EN 0x0fULL #define CONTROL_GT_EN 0x10ULL +#define CONTROL_GA_EN 0x11ULL +#define CONTROL_GAM_EN 0x19ULL #define CTRL_INV_TO_MASK (7 << CONTROL_INV_TIMEOUT) #define CTRL_INV_TO_NONE 0 @@ -329,6 +332,12 @@ #define IOMMU_CAP_NPCACHE 26 #define IOMMU_CAP_EFR 27 +/* IOMMU Feature Reporting Field (for IVHD type 10h */ +#define IOMMU_FEAT_GASUP_SHIFT 6 + +/* IOMMU Extended Feature Register (EFR) */ +#define IOMMU_EFR_GASUP_SHIFT 7 + #define MAX_DOMAIN_ID 65536 /* Protection domain flags */ @@ -681,4 +690,19 @@ static inline int get_hpet_devid(int id) return -EINVAL; } +enum amd_iommu_intr_mode_type { + AMD_IOMMU_GUEST_IR_LEGACY, + + /* This mode is not visible to users. It is used when + * we cannot fully enable vAPIC and fallback to only support + * legacy interrupt remapping via 128-bit IRTE. + */ + AMD_IOMMU_GUEST_IR_LEGACY_GA, + AMD_IOMMU_GUEST_IR_VAPIC, +}; + +#define AMD_IOMMU_GUEST_IR_GA(x) (x == AMD_IOMMU_GUEST_IR_VAPIC || \ + x == AMD_IOMMU_GUEST_IR_LEGACY_GA) + +#define AMD_IOMMU_GUEST_IR_VAPIC(x) (x == AMD_IOMMU_GUEST_IR_VAPIC) #endif /* _ASM_X86_AMD_IOMMU_TYPES_H */ |