* @adev: amdgpu_device pointer
* @fragment_size_default: the default fragment size if it's set auto
*/
-void amdgpu_vm_set_fragment_size(struct amdgpu_device *adev, uint32_t fragment_size_default)
+void amdgpu_vm_set_fragment_size(struct amdgpu_device *adev,
+ uint32_t fragment_size_default)
{
if (amdgpu_vm_fragment_size == -1)
adev->vm_manager.fragment_size = fragment_size_default;
* @adev: amdgpu_device pointer
* @vm_size: the default vm size if it's set auto
*/
-void amdgpu_vm_adjust_size(struct amdgpu_device *adev, uint64_t vm_size, uint32_t fragment_size_default)
+void amdgpu_vm_adjust_size(struct amdgpu_device *adev, uint64_t vm_size,
+ uint32_t fragment_size_default)
{
/* adjust vm size firstly */
if (amdgpu_vm_size == -1)
}
INIT_KFIFO(vm->faults);
+ vm->fault_credit = 16;
return 0;
amdgpu_vm_free_reserved_vmid(adev, vm, i);
}
+/**
+ * amdgpu_vm_pasid_fault_credit - Check fault credit for given PASID
+ *
+ * @adev: amdgpu_device pointer
+ * @pasid: PASID do identify the VM
+ *
+ * This function is expected to be called in interrupt context. Returns
+ * true if there was fault credit, false otherwise
+ */
+bool amdgpu_vm_pasid_fault_credit(struct amdgpu_device *adev,
+ unsigned int pasid)
+{
+ struct amdgpu_vm *vm;
+
+ spin_lock(&adev->vm_manager.pasid_lock);
+ vm = idr_find(&adev->vm_manager.pasid_idr, pasid);
+ spin_unlock(&adev->vm_manager.pasid_lock);
+ if (!vm)
+ /* VM not found, can't track fault credit */
+ return true;
+
+ /* No lock needed. only accessed by IRQ handler */
+ if (!vm->fault_credit)
+ /* Too many faults in this VM */
+ return false;
+
+ vm->fault_credit--;
+ return true;
+}
+
/**
* amdgpu_vm_manager_init - init the VM manager
*