drm/amdgpu: store ib info for devcoredump

Store the basic state of IBs so we can read it back in the
amdgpu_devcoredump_format function.

Signed-off-by: Pierre-Eric Pelloux-Prayer <[email protected]>
Reviewed-by: Alex Deucher <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

Author: peppsac

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

@@ -401,6 +401,7 @@ void amdgpu_coredump(struct amdgpu_device *adev, bool skip_vram_check,
 {
 	struct drm_device *dev = adev_to_drm(adev);
 	struct amdgpu_coredump_info *coredump;
+	size_t size = sizeof(*coredump);
 	struct drm_sched_job *s_job;
 	u64 total_ring_size, ring_count;
 	struct amdgpu_ring *ring;
@@ -410,12 +411,16 @@ void amdgpu_coredump(struct amdgpu_device *adev, bool skip_vram_check,
 	if (work_pending(&adev->coredump_work))
 		return;
 
-	coredump = kzalloc_obj(*coredump, GFP_NOWAIT);
+	if (job && job->pasid)
+		size += sizeof(struct amdgpu_coredump_ib_info) * job->num_ibs;
+
+	coredump = kzalloc(size, GFP_NOWAIT);
 	if (!coredump)
 		return;
 
 	coredump->skip_vram_check = skip_vram_check;
 	coredump->reset_vram_lost = vram_lost;
+	coredump->pasid = job->pasid;
 
 	if (job && job->pasid) {
 		struct amdgpu_task_info *ti;
@@ -425,6 +430,11 @@ void amdgpu_coredump(struct amdgpu_device *adev, bool skip_vram_check,
 			coredump->reset_task_info = *ti;
 			amdgpu_vm_put_task_info(ti);
 		}
+		coredump->num_ibs = job->num_ibs;
+		for (i = 0; i < job->num_ibs; ++i) {
+			coredump->ibs[i].gpu_addr = job->ibs[i].gpu_addr;
+			coredump->ibs[i].ib_size_dw = job->ibs[i].length_dw;
+		}
 	}
 
 	if (job) {

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

@@ -38,6 +38,11 @@ struct amdgpu_coredump_ring {
 	u32				offset;
 };
 
+struct amdgpu_coredump_ib_info {
+	uint64_t			gpu_addr;
+	u32				ib_size_dw;
+};
+
 struct amdgpu_coredump_info {
 	struct amdgpu_device            *adev;
 	struct amdgpu_task_info         reset_task_info;
@@ -56,6 +61,10 @@ struct amdgpu_coredump_info {
 	 */
 	ssize_t				formatted_size;
 	char				*formatted;
+
+	unsigned int			pasid;
+	int				num_ibs;
+	struct amdgpu_coredump_ib_info	ibs[] __counted_by(num_ibs);
 };
 #endif