Capture gmu log in coredump to enhance debugging.
Signed-off-by: Akhil P Oommen akhilpo@codeaurora.org ---
Changes in v3: - Fix style and a minor suggestion from Bjorn
Changes in v2: - Fix kernel test robot's warning about size_t's format specifier
drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c | 40 +++++++++++++++++++++++++++++ drivers/gpu/drm/msm/adreno/adreno_gpu.c | 4 +-- drivers/gpu/drm/msm/adreno/adreno_gpu.h | 2 ++ 3 files changed, 44 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c index 7501849..ad8e77a 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c @@ -42,6 +42,8 @@ struct a6xx_gpu_state { struct a6xx_gpu_state_obj *cx_debugbus; int nr_cx_debugbus;
+ struct msm_gpu_state_bo *gmu_log; + struct list_head objs; };
@@ -800,6 +802,29 @@ static void a6xx_get_gmu_registers(struct msm_gpu *gpu, &a6xx_state->gmu_registers[2], false); }
+static void a6xx_get_gmu_log(struct msm_gpu *gpu, + struct a6xx_gpu_state *a6xx_state) +{ + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu); + struct a6xx_gmu *gmu = &a6xx_gpu->gmu; + struct msm_gpu_state_bo *gmu_log; + + gmu_log = state_kcalloc(a6xx_state, 1, sizeof(*gmu_log)); + if (!gmu_log) + return; + + gmu_log->iova = gmu->log.iova; + gmu_log->size = gmu->log.size; + gmu_log->data = kvzalloc(gmu_log->size, GFP_KERNEL); + if (!gmu_log->data) + return; + + memcpy(gmu_log->data, gmu->log.virt, gmu->log.size); + + a6xx_state->gmu_log = gmu_log; +} + #define A6XX_GBIF_REGLIST_SIZE 1 static void a6xx_get_registers(struct msm_gpu *gpu, struct a6xx_gpu_state *a6xx_state, @@ -937,6 +962,8 @@ struct msm_gpu_state *a6xx_gpu_state_get(struct msm_gpu *gpu)
a6xx_get_gmu_registers(gpu, a6xx_state);
+ a6xx_get_gmu_log(gpu, a6xx_state); + /* If GX isn't on the rest of the data isn't going to be accessible */ if (!a6xx_gmu_gx_is_on(&a6xx_gpu->gmu)) return &a6xx_state->base; @@ -978,6 +1005,9 @@ static void a6xx_gpu_state_destroy(struct kref *kref) struct a6xx_gpu_state *a6xx_state = container_of(state, struct a6xx_gpu_state, base);
+ if (a6xx_state->gmu_log && a6xx_state->gmu_log->data) + kvfree(a6xx_state->gmu_log->data); + list_for_each_entry_safe(obj, tmp, &a6xx_state->objs, node) kfree(obj);
@@ -1191,6 +1221,16 @@ void a6xx_show(struct msm_gpu *gpu, struct msm_gpu_state *state,
adreno_show(gpu, state, p);
+ drm_puts(p, "gmu-log:\n"); + if (a6xx_state->gmu_log) { + struct msm_gpu_state_bo *gmu_log = a6xx_state->gmu_log; + + drm_printf(p, " iova: 0x%016llx\n", gmu_log->iova); + drm_printf(p, " size: %zu\n", gmu_log->size); + adreno_show_object(p, &gmu_log->data, gmu_log->size, + &gmu_log->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]; diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c index 7486652..d7ffbb2 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c @@ -630,8 +630,8 @@ static char *adreno_gpu_ascii85_encode(u32 *src, size_t len) }
/* len is expected to be in bytes */ -static void adreno_show_object(struct drm_printer *p, void **ptr, int len, - bool *encoded) +void adreno_show_object(struct drm_printer *p, void **ptr, int len, + bool *encoded) { if (!*ptr || !len) return; diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h index 225c277..6762308 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h @@ -306,6 +306,8 @@ void adreno_gpu_state_destroy(struct msm_gpu_state *state);
int adreno_gpu_state_get(struct msm_gpu *gpu, struct msm_gpu_state *state); int adreno_gpu_state_put(struct msm_gpu_state *state); +void adreno_show_object(struct drm_printer *p, void **ptr, int len, + bool *encoded);
/* * Common helper function to initialize the default address space for arm-smmu