Commit 780668df authored by Dmitry Baryshkov's avatar Dmitry Baryshkov Committed by Rob Clark
Browse files

drm/msm/a5xx: add devcoredump support to the fault handler 



Use adreno_fault_handler() to implement a5xx_fault_handler(). This
enables devcoredump support on a5xx platforms, allowing one to capture
the crashed GPU state at the time of context fault.

Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/522724/
Link: https://lore.kernel.org/r/20230214123504.3729522-4-dmitry.baryshkov@linaro.org


Signed-off-by: default avatarRob Clark <robdclark@chromium.org>
parent f62ad0f6

drivers/gpu/drm/msm/adreno/a5xx_gpu.c

+8 −5
Original line number Diff line number Diff line
@@ -1096,16 +1096,19 @@ bool a5xx_idle(struct msm_gpu *gpu, struct msm_ringbuffer *ring) 
static int a5xx_fault_handler(void *arg, unsigned long iova, int flags, void *data)

{

	struct msm_gpu *gpu = arg;

	pr_warn_ratelimited("*** gpu fault: iova=%08lx, flags=%d (%u,%u,%u,%u)\n",

			iova, flags,

	struct adreno_smmu_fault_info *info = data;

	char block[12] = "unknown";

	u32 scratch[] = {

			gpu_read(gpu, REG_A5XX_CP_SCRATCH_REG(4)),

			gpu_read(gpu, REG_A5XX_CP_SCRATCH_REG(5)),

			gpu_read(gpu, REG_A5XX_CP_SCRATCH_REG(6)),

			gpu_read(gpu, REG_A5XX_CP_SCRATCH_REG(7)));

			gpu_read(gpu, REG_A5XX_CP_SCRATCH_REG(7)),

	};



	gpu->aspace->mmu->funcs->resume_translation(gpu->aspace->mmu);

	if (info)

		snprintf(block, sizeof(block), "%x", info->fsynr1);



	return 0;

	return adreno_fault_handler(gpu, iova, flags, info, block, scratch);

}



static void a5xx_cp_err_irq(struct msm_gpu *gpu)