diff options
| author | Jordan Crouse <jcrouse@codeaurora.org> | 2021-06-10 14:44:10 -0700 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2021-06-23 07:33:55 -0700 |
| commit | ab5df7b953d87efddba4f9df83862f7dcb39b8d5 (patch) | |
| tree | db717553046384e6d0dccac6d024f523fbb9c066 /include/linux/adreno-smmu-priv.h | |
| parent | f8f934c180f629bb927a04fd90d6a16ef1a94073 (diff) | |
iommu/arm-smmu-qcom: Add an adreno-smmu-priv callback to get pagefault info
Add a callback in adreno-smmu-priv to read interesting SMMU
registers to provide an opportunity for a richer debug experience
in the GPU driver.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210610214431.539029-3-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'include/linux/adreno-smmu-priv.h')
| -rw-r--r-- | include/linux/adreno-smmu-priv.h | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/include/linux/adreno-smmu-priv.h b/include/linux/adreno-smmu-priv.h index a889f28afb42..53fe32fb9214 100644 --- a/include/linux/adreno-smmu-priv.h +++ b/include/linux/adreno-smmu-priv.h @@ -9,6 +9,32 @@ #include <linux/io-pgtable.h> /** + * struct adreno_smmu_fault_info - container for key fault information + * + * @far: The faulting IOVA from ARM_SMMU_CB_FAR + * @ttbr0: The current TTBR0 pagetable from ARM_SMMU_CB_TTBR0 + * @contextidr: The value of ARM_SMMU_CB_CONTEXTIDR + * @fsr: The fault status from ARM_SMMU_CB_FSR + * @fsynr0: The value of FSYNR0 from ARM_SMMU_CB_FSYNR0 + * @fsynr1: The value of FSYNR1 from ARM_SMMU_CB_FSYNR0 + * @cbfrsynra: The value of CBFRSYNRA from ARM_SMMU_GR1_CBFRSYNRA(idx) + * + * This struct passes back key page fault information to the GPU driver + * through the get_fault_info function pointer. + * The GPU driver can use this information to print informative + * log messages and provide deeper GPU specific insight into the fault. + */ +struct adreno_smmu_fault_info { + u64 far; + u64 ttbr0; + u32 contextidr; + u32 fsr; + u32 fsynr0; + u32 fsynr1; + u32 cbfrsynra; +}; + +/** * struct adreno_smmu_priv - private interface between adreno-smmu and GPU * * @cookie: An opque token provided by adreno-smmu and passed @@ -17,6 +43,8 @@ * @set_ttbr0_cfg: Set the TTBR0 config for the GPUs context bank. A * NULL config disables TTBR0 translation, otherwise * TTBR0 translation is enabled with the specified cfg + * @get_fault_info: Called by the GPU fault handler to get information about + * the fault * * The GPU driver (drm/msm) and adreno-smmu work together for controlling * the GPU's SMMU instance. This is by necessity, as the GPU is directly @@ -31,6 +59,7 @@ struct adreno_smmu_priv { const void *cookie; const struct io_pgtable_cfg *(*get_ttbr1_cfg)(const void *cookie); int (*set_ttbr0_cfg)(const void *cookie, const struct io_pgtable_cfg *cfg); + void (*get_fault_info)(const void *cookie, struct adreno_smmu_fault_info *info); }; -#endif /* __ADRENO_SMMU_PRIV_H */
\ No newline at end of file +#endif /* __ADRENO_SMMU_PRIV_H */ |