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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: Dmitry 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: Rob Clark <robdclark@chromium.org>
This commit is contained in:
Dmitry Baryshkov 2023-02-14 15:35:04 +03:00 committed by Rob Clark
parent f62ad0f6f4
commit 780668dfef
1 changed files with 8 additions and 5 deletions
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13
drivers/gpu/drm/msm/adreno/a5xx_gpu.c
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@ -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)