diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 8eb162509c84..5a170071702a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -1658,6 +1658,17 @@ static int amdgpu_init(struct amdgpu_device *adev) return 0; } +static void amdgpu_fill_reset_magic(struct amdgpu_device *adev) +{ + memcpy(adev->reset_magic, adev->gart.ptr, AMDGPU_RESET_MAGIC_NUM); +} + +static bool amdgpu_check_vram_lost(struct amdgpu_device *adev) +{ + return !!memcmp(adev->gart.ptr, adev->reset_magic, + AMDGPU_RESET_MAGIC_NUM); +} + static int amdgpu_late_init(struct amdgpu_device *adev) { int i = 0, r; @@ -1688,6 +1699,8 @@ static int amdgpu_late_init(struct amdgpu_device *adev) } } + amdgpu_fill_reset_magic(adev); + return 0; } @@ -2762,7 +2775,7 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev) { int i, r; int resched; - bool need_full_reset; + bool need_full_reset, vram_lost = false; if (!amdgpu_check_soft_reset(adev)) { DRM_INFO("No hardware hang detected. Did some blocks stall?\n"); @@ -2825,12 +2838,17 @@ retry: r = amdgpu_resume_phase1(adev); if (r) goto out; + vram_lost = amdgpu_check_vram_lost(adev); + if (vram_lost) + DRM_ERROR("VRAM is lost!\n"); r = amdgpu_ttm_recover_gart(adev); if (r) goto out; r = amdgpu_resume_phase2(adev); if (r) goto out; + if (vram_lost) + amdgpu_fill_reset_magic(adev); } } out: |