[PATCH 6/7] drm/msm/gpu: Snapshot GMU debug buffer

Rob Clark
2021-11-24T21:38:45Z

It appears to be a GMU fw build option whether it does anything with
debug and log buffers, but if they are all zeros it won't add anything
to the devcore size.

Signed-off-by: Rob Clark <robdclark@chromium.org>
---
drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
index a84ba8982cb8..bdd0059a81ff 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
@@ -44,6 +44,7 @@ struct a6xx_gpu_state {

struct msm_gpu_state_bo *gmu_log;
struct msm_gpu_state_bo *gmu_hfi;
+ struct msm_gpu_state_bo *gmu_debug;

s32 hfi_queue_history[2][HFI_HISTORY_SZ];

@@ -983,6 +984,7 @@ struct msm_gpu_state *a6xx_gpu_state_get(struct msm_gpu *gpu)

a6xx_state->gmu_log = a6xx_snapshot_gmu_bo(a6xx_state, &a6xx_gpu->gmu.log);
a6xx_state->gmu_hfi = a6xx_snapshot_gmu_bo(a6xx_state, &a6xx_gpu->gmu.hfi);
+ a6xx_state->gmu_debug = a6xx_snapshot_gmu_bo(a6xx_state, &a6xx_gpu->gmu.debug);

a6xx_snapshot_gmu_hfi_history(gpu, a6xx_state);

@@ -1274,6 +1276,16 @@ void a6xx_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
&gmu_hfi->encoded);
}

+ drm_puts(p, "gmu-debug:\n");
+ if (a6xx_state->gmu_debug) {
+ struct msm_gpu_state_bo *gmu_debug = a6xx_state->gmu_debug;
+
+ drm_printf(p, " iova: 0x%016llx\n", gmu_debug->iova);
+ drm_printf(p, " size: %zu\n", gmu_debug->size);
+ adreno_show_object(p, &gmu_debug->data, gmu_debug->size,
+ &gmu_debug->encoded);
+ }
+
drm_puts(p, "registers:\n");
for (i = 0; i < a6xx_state->nr_registers; i++) {
struct a6xx_gpu_state_obj *obj = &a6xx_state->registers[i];
--
2.33.1