drm/amdgpu: Add work_struct for GPU reset from kfd.

We need to have a work_struct to cancel this reset if another
already in progress.
Signed-off-by: NAndrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c

@@ -33,6 +33,7 @@
 #include <uapi/linux/kfd_ioctl.h>
 #include "amdgpu_ras.h"
 #include "amdgpu_umc.h"
+#include "amdgpu_reset.h"
 
 /* Total memory size in system memory and all GPU VRAM. Used to
  * estimate worst case amount of memory to reserve for page tables
@@ -122,6 +123,15 @@ static void amdgpu_doorbell_get_kfd_info(struct amdgpu_device *adev,
 	}
 }
 
+
+static void amdgpu_amdkfd_reset_work(struct work_struct *work)
+{
+	struct amdgpu_device *adev = container_of(work, struct amdgpu_device,
+						  kfd.reset_work);
+
+	amdgpu_device_gpu_recover_imp(adev, NULL);
+}
+
 void amdgpu_amdkfd_device_init(struct amdgpu_device *adev)
 {
 	int i;
@@ -180,6 +190,8 @@ void amdgpu_amdkfd_device_init(struct amdgpu_device *adev)
 
 		adev->kfd.init_complete = kgd2kfd_device_init(adev->kfd.dev,
 						adev_to_drm(adev), &gpu_resources);
+
+		INIT_WORK(&adev->kfd.reset_work, amdgpu_amdkfd_reset_work);
 	}
 }
 
@@ -247,7 +259,8 @@ int amdgpu_amdkfd_post_reset(struct amdgpu_device *adev)
 void amdgpu_amdkfd_gpu_reset(struct amdgpu_device *adev)
 {
 	if (amdgpu_device_should_recover_gpu(adev))
-		amdgpu_device_gpu_recover(adev, NULL);
+		amdgpu_reset_domain_schedule(adev->reset_domain,
+					     &adev->kfd.reset_work);
 }
 
 int amdgpu_amdkfd_alloc_gtt_mem(struct amdgpu_device *adev, size_t size,

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h

@@ -97,6 +97,7 @@ struct amdgpu_kfd_dev {
 	struct kfd_dev *dev;
 	uint64_t vram_used;
 	bool init_complete;
+	struct work_struct reset_work;
 };
 
 enum kgd_engine_type {

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

@@ -5323,37 +5323,6 @@ int amdgpu_device_gpu_recover_imp(struct amdgpu_device *adev,
 	return r;
 }
 
-struct amdgpu_recover_work_struct {
-	struct work_struct base;
-	struct amdgpu_device *adev;
-	struct amdgpu_job *job;
-	int ret;
-};
-
-static void amdgpu_device_queue_gpu_recover_work(struct work_struct *work)
-{
-	struct amdgpu_recover_work_struct *recover_work = container_of(work, struct amdgpu_recover_work_struct, base);
-
-	amdgpu_device_gpu_recover_imp(recover_work->adev, recover_work->job);
-}
-/*
- * Serialize gpu recover into reset domain single threaded wq
- */
-int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
-				    struct amdgpu_job *job)
-{
-	struct amdgpu_recover_work_struct work = {.adev = adev, .job = job};
-
-	INIT_WORK(&work.base, amdgpu_device_queue_gpu_recover_work);
-
-	if (!amdgpu_reset_domain_schedule(adev->reset_domain, &work.base))
-		return -EAGAIN;
-
-	flush_work(&work.base);
-
-	return atomic_read(&adev->reset_domain->reset_res);
-}
-
 /**
  * amdgpu_device_get_pcie_info - fence pcie info about the PCIE slot
  *