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| author | Bjorn Andersson <bjorn.andersson@oss.qualcomm.com> | 2024-11-10 20:33:40 +0300 |
|---|---|---|
| committer | Bjorn Andersson <andersson@kernel.org> | 2024-11-11 21:03:26 +0300 |
| commit | 1af75b2ad08bd5977c51c2d0fc11741a4c0a48d9 (patch) | |
| tree | 4cfb229050ef8e39b0691640bf052ff82a296f72 /drivers/firmware | |
| parent | a8fc655e01b6ca3b596b41ad000c7fead6093ce4 (diff) | |
| download | linux-1af75b2ad08bd5977c51c2d0fc11741a4c0a48d9.tar.xz | |
firmware: qcom: scm: Introduce CP_SMMU_APERTURE_ID
The QCOM_SCM_SVC_MP service provides QCOM_SCM_MP_CP_SMMU_APERTURE_ID,
which is used to trigger the mapping of register banks into the SMMU
context for per-processes page tables to function (in case this isn't
statically setup by firmware).
This is necessary on e.g. QCS6490 Rb3Gen2, in order to avoid "CP | AHB
bus error"-errors from the GPU.
Introduce a function to allow the msm driver to invoke this call.
Signed-off-by: Bjorn Andersson <bjorn.andersson@oss.qualcomm.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Link: https://lore.kernel.org/r/20241110-adreno-smmu-aparture-v2-1-9b1fb2ee41d4@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/qcom/qcom_scm.c | 26 | ||||
| -rw-r--r-- | drivers/firmware/qcom/qcom_scm.h | 1 |
2 files changed, 27 insertions, 0 deletions
diff --git a/drivers/firmware/qcom/qcom_scm.c b/drivers/firmware/qcom/qcom_scm.c index bdb42eb2e1e8..596a8acf0899 100644 --- a/drivers/firmware/qcom/qcom_scm.c +++ b/drivers/firmware/qcom/qcom_scm.c @@ -903,6 +903,32 @@ int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare) } EXPORT_SYMBOL_GPL(qcom_scm_restore_sec_cfg); +#define QCOM_SCM_CP_APERTURE_CONTEXT_MASK GENMASK(7, 0) + +bool qcom_scm_set_gpu_smmu_aperture_is_available(void) +{ + return __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_MP, + QCOM_SCM_MP_CP_SMMU_APERTURE_ID); +} +EXPORT_SYMBOL_GPL(qcom_scm_set_gpu_smmu_aperture_is_available); + +int qcom_scm_set_gpu_smmu_aperture(unsigned int context_bank) +{ + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_MP, + .cmd = QCOM_SCM_MP_CP_SMMU_APERTURE_ID, + .arginfo = QCOM_SCM_ARGS(4), + .args[0] = 0xffff0000 | FIELD_PREP(QCOM_SCM_CP_APERTURE_CONTEXT_MASK, context_bank), + .args[1] = 0xffffffff, + .args[2] = 0xffffffff, + .args[3] = 0xffffffff, + .owner = ARM_SMCCC_OWNER_SIP + }; + + return qcom_scm_call(__scm->dev, &desc, NULL); +} +EXPORT_SYMBOL_GPL(qcom_scm_set_gpu_smmu_aperture); + int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size) { struct qcom_scm_desc desc = { diff --git a/drivers/firmware/qcom/qcom_scm.h b/drivers/firmware/qcom/qcom_scm.h index 685b8f59e7a6..e36b2f67607f 100644 --- a/drivers/firmware/qcom/qcom_scm.h +++ b/drivers/firmware/qcom/qcom_scm.h @@ -116,6 +116,7 @@ struct qcom_tzmem_pool *qcom_scm_get_tzmem_pool(void); #define QCOM_SCM_MP_IOMMU_SET_CP_POOL_SIZE 0x05 #define QCOM_SCM_MP_VIDEO_VAR 0x08 #define QCOM_SCM_MP_ASSIGN 0x16 +#define QCOM_SCM_MP_CP_SMMU_APERTURE_ID 0x1b #define QCOM_SCM_MP_SHM_BRIDGE_ENABLE 0x1c #define QCOM_SCM_MP_SHM_BRIDGE_DELETE 0x1d #define QCOM_SCM_MP_SHM_BRIDGE_CREATE 0x1e |