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Commit 904cd389 authored by Xiangliang Yu's avatar Xiangliang Yu Committed by Alex Deucher
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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: default avatarXiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent a92f5ec0

drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c

+46 −0
Original line number Diff line number Diff line
@@ -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;

}

drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h

+2 −0
Original line number Diff line number Diff line
@@ -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