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drm/amdgpu: save and restore the firwmware cache part when suspend resume 

Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Leo Liu 2016-04-04 10:55:43 -04:00 committed by Alex Deucher
parent 3f99dd814a
commit d23be4e34c
1 changed files with 11 additions and 16 deletions
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27
drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
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@ -243,7 +243,6 @@ int amdgpu_uvd_suspend(struct amdgpu_device *adev)
{
unsigned size;
void *ptr;
const struct common_firmware_header *hdr;
int i;
if (adev->uvd.vcpu_bo == NULL)
@ -256,13 +255,8 @@ int amdgpu_uvd_suspend(struct amdgpu_device *adev)
if (i == AMDGPU_MAX_UVD_HANDLES)
return 0;
hdr = (const struct common_firmware_header *)adev->uvd.fw->data;
size = amdgpu_bo_size(adev->uvd.vcpu_bo);
size -= le32_to_cpu(hdr->ucode_size_bytes);
ptr = adev->uvd.cpu_addr;
ptr += le32_to_cpu(hdr->ucode_size_bytes);
adev->uvd.saved_bo = kmalloc(size, GFP_KERNEL);
if (!adev->uvd.saved_bo)
@ -277,28 +271,29 @@ int amdgpu_uvd_resume(struct amdgpu_device *adev)
{
unsigned size;
void *ptr;
const struct common_firmware_header *hdr;
unsigned offset;
if (adev->uvd.vcpu_bo == NULL)
return -EINVAL;
hdr = (const struct common_firmware_header *)adev->uvd.fw->data;
offset = le32_to_cpu(hdr->ucode_array_offset_bytes);
memcpy(adev->uvd.cpu_addr, (adev->uvd.fw->data) + offset,
(adev->uvd.fw->size) - offset);
size = amdgpu_bo_size(adev->uvd.vcpu_bo);
size -= le32_to_cpu(hdr->ucode_size_bytes);
ptr = adev->uvd.cpu_addr;
ptr += le32_to_cpu(hdr->ucode_size_bytes);
if (adev->uvd.saved_bo != NULL) {
memcpy(ptr, adev->uvd.saved_bo, size);
kfree(adev->uvd.saved_bo);
adev->uvd.saved_bo = NULL;
} else
} else {
const struct common_firmware_header *hdr;
unsigned offset;
hdr = (const struct common_firmware_header *)adev->uvd.fw->data;
offset = le32_to_cpu(hdr->ucode_array_offset_bytes);
memcpy(adev->uvd.cpu_addr, (adev->uvd.fw->data) + offset,
(adev->uvd.fw->size) - offset);
size -= le32_to_cpu(hdr->ucode_size_bytes);
ptr += le32_to_cpu(hdr->ucode_size_bytes);
memset(ptr, 0, size);
}
return 0;
}