Commit 3f99dd81 authored by Leo Liu's avatar Leo Liu Committed by Alex Deucher
Browse files

drm/amdgpu: save and restore UVD context with suspend and resume



and revert fix following it accordingly

Revert "drm/amdgpu: stop trying to suspend UVD sessions v2"
Revert "drm/amdgpu: fix the UVD suspend sequence order"
Signed-off-by: default avatarLeo Liu <leo.liu@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 749b48fa
......@@ -1591,6 +1591,7 @@ struct amdgpu_uvd {
struct amdgpu_bo *vcpu_bo;
void *cpu_addr;
uint64_t gpu_addr;
void *saved_bo;
atomic_t handles[AMDGPU_MAX_UVD_HANDLES];
struct drm_file *filp[AMDGPU_MAX_UVD_HANDLES];
struct delayed_work idle_work;
......
......@@ -241,32 +241,34 @@ int amdgpu_uvd_sw_fini(struct amdgpu_device *adev)
int amdgpu_uvd_suspend(struct amdgpu_device *adev)
{
struct amdgpu_ring *ring = &adev->uvd.ring;
int i, r;
unsigned size;
void *ptr;
const struct common_firmware_header *hdr;
int i;
if (adev->uvd.vcpu_bo == NULL)
return 0;
for (i = 0; i < AMDGPU_MAX_UVD_HANDLES; ++i) {
uint32_t handle = atomic_read(&adev->uvd.handles[i]);
if (handle != 0) {
struct fence *fence;
for (i = 0; i < AMDGPU_MAX_UVD_HANDLES; ++i)
if (atomic_read(&adev->uvd.handles[i]))
break;
amdgpu_uvd_note_usage(adev);
if (i == AMDGPU_MAX_UVD_HANDLES)
return 0;
r = amdgpu_uvd_get_destroy_msg(ring, handle, false, &fence);
if (r) {
DRM_ERROR("Error destroying UVD (%d)!\n", r);
continue;
}
hdr = (const struct common_firmware_header *)adev->uvd.fw->data;
fence_wait(fence, false);
fence_put(fence);
size = amdgpu_bo_size(adev->uvd.vcpu_bo);
size -= le32_to_cpu(hdr->ucode_size_bytes);
adev->uvd.filp[i] = NULL;
atomic_set(&adev->uvd.handles[i], 0);
}
}
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)
return -ENOMEM;
memcpy(adev->uvd.saved_bo, ptr, size);
return 0;
}
......@@ -291,7 +293,12 @@ int amdgpu_uvd_resume(struct amdgpu_device *adev)
ptr = adev->uvd.cpu_addr;
ptr += le32_to_cpu(hdr->ucode_size_bytes);
memset(ptr, 0, size);
if (adev->uvd.saved_bo != NULL) {
memcpy(ptr, adev->uvd.saved_bo, size);
kfree(adev->uvd.saved_bo);
adev->uvd.saved_bo = NULL;
} else
memset(ptr, 0, size);
return 0;
}
......
......@@ -224,11 +224,11 @@ static int uvd_v4_2_suspend(void *handle)
int r;
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
r = amdgpu_uvd_suspend(adev);
r = uvd_v4_2_hw_fini(adev);
if (r)
return r;
r = uvd_v4_2_hw_fini(adev);
r = amdgpu_uvd_suspend(adev);
if (r)
return r;
......
......@@ -220,11 +220,11 @@ static int uvd_v5_0_suspend(void *handle)
int r;
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
r = amdgpu_uvd_suspend(adev);
r = uvd_v5_0_hw_fini(adev);
if (r)
return r;
r = uvd_v5_0_hw_fini(adev);
r = amdgpu_uvd_suspend(adev);
if (r)
return r;
......
......@@ -214,15 +214,16 @@ static int uvd_v6_0_suspend(void *handle)
int r;
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
r = uvd_v6_0_hw_fini(adev);
if (r)
return r;
/* Skip this for APU for now */
if (!(adev->flags & AMD_IS_APU)) {
r = amdgpu_uvd_suspend(adev);
if (r)
return r;
}
r = uvd_v6_0_hw_fini(adev);
if (r)
return r;
return r;
}
......
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