diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2020-10-06 10:54:38 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-10-04 18:36:57 -0400 |
| commit | 2e8ef6a56129526a67b1058124be0839ab8f976a (patch) | |
| tree | 7876f7a2137fd223b5f353ff2de5e175a810b33a | |
| parent | ec4d770bbb155674c2497f255f4199bdc42287a9 (diff) | |
drm/amdgpu: add cached GPU fault structure to vm struct
When we get a GPU page fault, cache the fault for later
analysis.
Cc: samuel.pitoiset@gmail.com
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 31 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 18 |
2 files changed, 49 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 8ce91f69bbeb..91e36b0ad062 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -2730,3 +2730,34 @@ void amdgpu_debugfs_vm_bo_info(struct amdgpu_vm *vm, struct seq_file *m) total_done_objs); } #endif + +/** + * amdgpu_vm_update_fault_cache - update cached fault into. + * @adev: amdgpu device pointer + * @pasid: PASID of the VM + * @addr: Address of the fault + * @status: GPUVM fault status register + * @vmhub: which vmhub got the fault + * + * Cache the fault info for later use by userspace in debugging. + */ +void amdgpu_vm_update_fault_cache(struct amdgpu_device *adev, + unsigned int pasid, + uint64_t addr, + uint32_t status, + unsigned int vmhub) +{ + struct amdgpu_vm *vm; + unsigned long flags; + + xa_lock_irqsave(&adev->vm_manager.pasids, flags); + + vm = xa_load(&adev->vm_manager.pasids, pasid); + if (vm) { + vm->fault_info.addr = addr; + vm->fault_info.status = status; + vm->fault_info.vmhub = vmhub; + } + xa_unlock_irqrestore(&adev->vm_manager.pasids, flags); +} + diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h index 204ab13184ed..2bf328d9e04b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h @@ -252,6 +252,15 @@ struct amdgpu_vm_update_funcs { struct dma_fence **fence); }; +struct amdgpu_vm_fault_info { + /* fault address */ + uint64_t addr; + /* fault status register */ + uint32_t status; + /* which vmhub? gfxhub, mmhub, etc. */ + unsigned int vmhub; +}; + struct amdgpu_vm { /* tree of virtual addresses mapped */ struct rb_root_cached va; @@ -343,6 +352,9 @@ struct amdgpu_vm { /* Memory partition number, -1 means any partition */ int8_t mem_id; + + /* cached fault info */ + struct amdgpu_vm_fault_info fault_info; }; struct amdgpu_vm_manager { @@ -554,4 +566,10 @@ static inline void amdgpu_vm_eviction_unlock(struct amdgpu_vm *vm) mutex_unlock(&vm->eviction_lock); } +void amdgpu_vm_update_fault_cache(struct amdgpu_device *adev, + unsigned int pasid, + uint64_t addr, + uint32_t status, + unsigned int vmhub); + #endif |