drm/msm: add hang_debug module param
msm.hang_debug=y will dump out current register values if the gpu locks
up, for easier debugging.
Signed-off-by: Rob Clark <robdclark@gmail.com>
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index d321099..cf6eb97 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -260,6 +260,24 @@
}
#endif
+/* would be nice to not have to duplicate the _show() stuff with printk(): */
+void adreno_dump(struct msm_gpu *gpu)
+{
+ struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
+
+ printk("revision: %d (%d.%d.%d.%d)\n",
+ adreno_gpu->info->revn, adreno_gpu->rev.core,
+ adreno_gpu->rev.major, adreno_gpu->rev.minor,
+ adreno_gpu->rev.patchid);
+
+ printk("fence: %d/%d\n", adreno_gpu->memptrs->fence,
+ gpu->submitted_fence);
+ printk("rptr: %d\n", adreno_gpu->memptrs->rptr);
+ printk("wptr: %d\n", adreno_gpu->memptrs->wptr);
+ printk("rb wptr: %d\n", get_wptr(gpu->rb));
+
+}
+
void adreno_wait_ring(struct msm_gpu *gpu, uint32_t ndwords)
{
struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);