diff options
| author | Horace Chen <horace.chen@amd.com> | 2017-09-29 14:41:57 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-10-09 16:30:16 -0400 |
| commit | a05502e5cfa9abe17a16592be82c2f5692c91f35 (patch) | |
| tree | 4469aaafa3b34b2f81768ee775c08ee9e218ee45 /drivers/gpu/drm/amd/amdgpu/amdgpu.h | |
| parent | 6d16dac85c081825af58111023428c43d1da7e1a (diff) | |
drm/amdgpu: Reserve shared memory on VRAM for SR-IOV
SR-IOV need to reserve a piece of shared VRAM at the exact place
to exchange data betweem PF and VF. The start address and size of
the shared mem are passed to guest through VBIOS structure
VRAM_UsageByFirmware.
VRAM_UsageByFirmware is a general feature in VBIOS, it indicates
that VBIOS need to reserve a piece of memory on the VRAM.
Because the mem address is specified. Reserve it early in
amdgpu_ttm_init to make sure that it can monoplize the space.
Signed-off-by: Horace Chen <horace.chen@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index a23b8af95319..5c4bed7778d9 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -1379,6 +1379,18 @@ struct amdgpu_atcs { }; /* + * Firmware VRAM reservation + */ +struct amdgpu_fw_vram_usage { + u64 start_offset; + u64 size; + struct amdgpu_bo *reserved_bo; + void *va; +}; + +int amdgpu_fw_reserve_vram_init(struct amdgpu_device *adev); + +/* * CGS */ struct cgs_device *amdgpu_cgs_create_device(struct amdgpu_device *adev); @@ -1582,6 +1594,8 @@ struct amdgpu_device { struct delayed_work late_init_work; struct amdgpu_virt virt; + /* firmware VRAM reservation */ + struct amdgpu_fw_vram_usage fw_vram_usage; /* link all shadow bo */ struct list_head shadow_list; |