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drm/amdgpu/virt: add two functions for MM table 

Add two functions to allocate & free MM table memory.

Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Xiangliang Yu 2017-04-21 15:40:25 +08:00 committed by Alex Deucher
parent a92f5ec0c1
commit 904cd3891d
2 changed files with 48 additions and 0 deletions
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46
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
View File

@ -225,3 +225,49 @@ int amdgpu_virt_reset_gpu(struct amdgpu_device *adev)
return 0;
}
/**
* amdgpu_virt_alloc_mm_table() - alloc memory for mm table
* @amdgpu: amdgpu device.
* MM table is used by UVD and VCE for its initialization
* Return: Zero if allocate success.
*/
int amdgpu_virt_alloc_mm_table(struct amdgpu_device *adev)
{
int r;
if (!amdgpu_sriov_vf(adev) || adev->virt.mm_table.gpu_addr)
return 0;
r = amdgpu_bo_create_kernel(adev, PAGE_SIZE, PAGE_SIZE,
AMDGPU_GEM_DOMAIN_VRAM,
&adev->virt.mm_table.bo,
&adev->virt.mm_table.gpu_addr,
(void *)&adev->virt.mm_table.cpu_addr);
if (r) {
DRM_ERROR("failed to alloc mm table and error = %d.\n", r);
return r;
}
memset((void *)adev->virt.mm_table.cpu_addr, 0, PAGE_SIZE);
DRM_INFO("MM table gpu addr = 0x%llx, cpu addr = %p.\n",
adev->virt.mm_table.gpu_addr,
adev->virt.mm_table.cpu_addr);
return 0;
}
/**
* amdgpu_virt_free_mm_table() - free mm table memory
* @amdgpu: amdgpu device.
* Free MM table memory
*/
void amdgpu_virt_free_mm_table(struct amdgpu_device *adev)
{
if (!amdgpu_sriov_vf(adev) || !adev->virt.mm_table.gpu_addr)
return;
amdgpu_bo_free_kernel(&adev->virt.mm_table.bo,
&adev->virt.mm_table.gpu_addr,
(void *)&adev->virt.mm_table.cpu_addr);
adev->virt.mm_table.gpu_addr = 0;
}

2
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
View File

@ -98,5 +98,7 @@ int amdgpu_virt_request_full_gpu(struct amdgpu_device *adev, bool init);
int amdgpu_virt_release_full_gpu(struct amdgpu_device *adev, bool init);
int amdgpu_virt_reset_gpu(struct amdgpu_device *adev);
int amdgpu_sriov_gpu_reset(struct amdgpu_device *adev, bool voluntary);
int amdgpu_virt_alloc_mm_table(struct amdgpu_device *adev);
void amdgpu_virt_free_mm_table(struct amdgpu_device *adev);
#endif