xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

firmware/qcom_scm: Add scm call to handle smmu errata

Browse Source 
Qcom's smmu-500 needs to toggle wait-for-safe sequence to
handle TLB invalidation sync's.
Few firmwares allow doing that through SCM interface.
Add API to toggle wait for safe from firmware through a
SCM call.

Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Acked-by: Andy Gross <agross@kernel.org>
Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Vivek Gautam
2019-09-20 13:34:28 +05:30
committed by Will Deacon
parent 1a5ea3b7a6
commit 5eb0e0e4f9
5 changed files with 31 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/firmware/qcom_scm.c
View File

@@ -345,6 +345,12 @@ int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare)
}
EXPORT_SYMBOL(qcom_scm_iommu_secure_ptbl_init);
int qcom_scm_qsmmu500_wait_safe_toggle(bool en)
{
return __qcom_scm_qsmmu500_wait_safe_toggle(__scm->dev, en);
}
EXPORT_SYMBOL(qcom_scm_qsmmu500_wait_safe_toggle);
int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val)
{
return __qcom_scm_io_readl(__scm->dev, addr, val);