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authorRob Clark <robdclark@chromium.org>2020-08-11 16:36:57 -0700
committerRob Clark <robdclark@chromium.org>2020-08-22 10:49:08 -0700
commit6f7cd6e40b94d498049c1a8664c15bf5863ae578 (patch)
tree80590dc40ed64c11ca8be8b00be222bf30e3f90f
parentf74cacf5d2bf71c2b415dbb9f100f2c705ad5182 (diff)
downloadlinux-6f7cd6e40b94d498049c1a8664c15bf5863ae578.tar.bz2
drm/msm/a6xx: add module param to enable debugbus snapshot
For production devices, the debugbus sections will typically be fused off and empty in the gpu device coredump. But since this may contain data like cache contents, don't capture it by default. Signed-off-by: Rob Clark <robdclark@chromium.org> Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org> Signed-off-by: Rob Clark <robdclark@chromium.org>
-rw-r--r--drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c3
-rw-r--r--drivers/gpu/drm/msm/adreno/adreno_device.c4
-rw-r--r--drivers/gpu/drm/msm/adreno/adreno_gpu.h2
3 files changed, 8 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
index 959656ad6987..b12f5b4a1bea 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
@@ -938,7 +938,8 @@ struct msm_gpu_state *a6xx_gpu_state_get(struct msm_gpu *gpu)
msm_gem_kernel_put(dumper.bo, gpu->aspace, true);
}
- a6xx_get_debugbus(gpu, a6xx_state);
+ if (snapshot_debugbus)
+ a6xx_get_debugbus(gpu, a6xx_state);
return &a6xx_state->base;
}
diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
index 4e84f3c76f4f..9eeb46bf2a5d 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_device.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
@@ -14,6 +14,10 @@ bool hang_debug = false;
MODULE_PARM_DESC(hang_debug, "Dump registers when hang is detected (can be slow!)");
module_param_named(hang_debug, hang_debug, bool, 0600);
+bool snapshot_debugbus = false;
+MODULE_PARM_DESC(snapshot_debugbus, "Include debugbus sections in GPU devcoredump (if not fused off)");
+module_param_named(snapshot_debugbus, snapshot_debugbus, bool, 0600);
+
static const struct adreno_info gpulist[] = {
{
.rev = ADRENO_REV(2, 0, 0, 0),
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
index 99bb468f5f24..e55abae365b5 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
@@ -21,6 +21,8 @@
#define REG_SKIP ~0
#define REG_ADRENO_SKIP(_offset) [_offset] = REG_SKIP
+extern bool snapshot_debugbus;
+
/**
* adreno_regs: List of registers that are used in across all
* 3D devices. Each device type has different offset value for the same