diff options
| author | Rob Clark <robdclark@chromium.org> | 2021-06-10 14:44:13 -0700 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2021-06-23 07:33:55 -0700 |
| commit | e25e92e08e32c6bf63a968929d232f13dcf9938c (patch) | |
| tree | fbe3898e124d71c6d4e5351cfd490a2e96b550b8 /drivers/gpu/drm/msm/adreno/adreno_gpu.c | |
| parent | ba6014a4e480c3c2b169438c47273a113c35ba4e (diff) | |
| download | linux-e25e92e08e32c6bf63a968929d232f13dcf9938c.tar.bz2 | |
drm/msm: devcoredump iommu fault support
Wire up support to stall the SMMU on iova fault, and collect a devcore-
dump snapshot for easier debugging of faults.
Currently this is a6xx-only, but mostly only because so far it is the
only one using adreno-smmu-priv.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Jordan Crouse <jordan@cosmicpenguin.net>
Link: https://lore.kernel.org/r/20210610214431.539029-6-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/msm/adreno/adreno_gpu.c')
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/adreno_gpu.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c index 90bc8637ee52..9f5a30234b33 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c @@ -684,6 +684,21 @@ void adreno_show(struct msm_gpu *gpu, struct msm_gpu_state *state, adreno_gpu->info->revn, adreno_gpu->rev.core, adreno_gpu->rev.major, adreno_gpu->rev.minor, adreno_gpu->rev.patchid); + /* + * If this is state collected due to iova fault, so fault related info + * + * TTBR0 would not be zero, so this is a good way to distinguish + */ + if (state->fault_info.ttbr0) { + const struct msm_gpu_fault_info *info = &state->fault_info; + + drm_puts(p, "fault-info:\n"); + drm_printf(p, " - ttbr0=%.16llx\n", info->ttbr0); + drm_printf(p, " - iova=%.16lx\n", info->iova); + drm_printf(p, " - dir=%s\n", info->flags & IOMMU_FAULT_WRITE ? "WRITE" : "READ"); + drm_printf(p, " - type=%s\n", info->type); + drm_printf(p, " - source=%s\n", info->block); + } drm_printf(p, "rbbm-status: 0x%08x\n", state->rbbm_status); |