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| author | Christian König <christian.koenig@amd.com> | 2017-11-06 15:37:01 +0100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-12-06 12:48:05 -0500 |
| commit | bb7939b2030ab55acd203c86160c37db22f5796a (patch) | |
| tree | 862995ae5c903f912e675d5e89b0ba774cde34c9 /drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | |
| parent | 6af046d26f34278eacd6ecddb37170624f6d4251 (diff) | |
| download | linux-bb7939b2030ab55acd203c86160c37db22f5796a.tar.bz2 | |
drm/amdgpu: fix VA hole handling on Vega10 v3
Similar to the CPU address space the VA on Vega10 has a hole in it.
v2: use dev_dbg instead of dev_err
v3: add some more comments to explain how the hw works
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
CC: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h index e8f8896d18db..c80d45dd2bd3 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h @@ -96,6 +96,19 @@ struct amdgpu_bo_list_entry; /* hardcode that limit for now */ #define AMDGPU_VA_RESERVED_SIZE (8ULL << 20) +/* VA hole for 48bit addresses on Vega10 */ +#define AMDGPU_VA_HOLE_START 0x0000800000000000ULL +#define AMDGPU_VA_HOLE_END 0xffff800000000000ULL + +/* + * Hardware is programmed as if the hole doesn't exists with start and end + * address values. + * + * This mask is used to remove the upper 16bits of the VA and so come up with + * the linear addr value. + */ +#define AMDGPU_VA_HOLE_MASK 0x0000ffffffffffffULL + /* max vmids dedicated for process */ #define AMDGPU_VM_MAX_RESERVED_VMID 1 |