drm/amdgpu: return -ENODEV to user space when vram is lost v2

below ioctl will return -ENODEV:
amdgpu_cs_ioctl
amdgpu_cs_wait_ioctl
amdgpu_cs_wait_fences_ioctl
amdgpu_gem_va_ioctl
amdgpu_info_ioctl

v2: only for map and replace cases in amdgpu_gem_va_ioctl

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index ec9774c0d1d9..333413f48165 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -824,6 +824,7 @@ struct amdgpu_fpriv {
         struct mutex            bo_list_lock;
         struct idr              bo_list_handles;
         struct amdgpu_ctx_mgr   ctx_mgr;
+        u32                     vram_lost_counter;
 };
 
 /*
@@ -1528,6 +1529,7 @@ struct amdgpu_device {
         atomic64_t                      num_bytes_moved;
         atomic64_t                      num_evictions;
         atomic_t                        gpu_reset_counter;
+        atomic_t                        vram_lost_counter;
 
         /* data for buffer migration throttling */
         struct {
@@ -1914,6 +1916,8 @@ static inline bool amdgpu_has_atpx(void) { return false; }
 extern const struct drm_ioctl_desc amdgpu_ioctls_kms[];
 extern const int amdgpu_max_kms_ioctl;
 
+bool amdgpu_kms_vram_lost(struct amdgpu_device *adev,
+                          struct amdgpu_fpriv *fpriv);
 int amdgpu_driver_load_kms(struct drm_device *dev, unsigned long flags);
 void amdgpu_driver_unload_kms(struct drm_device *dev);
 void amdgpu_driver_lastclose_kms(struct drm_device *dev);