From 5eb0e0e4f90addc6b79ebf1cb4b06b56b09f09de Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Fri, 20 Sep 2019 13:34:28 +0530 Subject: firmware/qcom_scm: Add scm call to handle smmu errata 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 Reviewed-by: Bjorn Andersson Reviewed-by: Stephen Boyd Acked-by: Andy Gross Signed-off-by: Sai Prakash Ranjan Signed-off-by: Will Deacon --- include/linux/qcom_scm.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/qcom_scm.h b/include/linux/qcom_scm.h index 2d5eff506e13..ffd72b3b14ee 100644 --- a/include/linux/qcom_scm.h +++ b/include/linux/qcom_scm.h @@ -58,6 +58,7 @@ extern int qcom_scm_set_remote_state(u32 state, u32 id); extern int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare); extern int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size); extern int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare); +extern int qcom_scm_qsmmu500_wait_safe_toggle(bool en); extern int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val); extern int qcom_scm_io_writel(phys_addr_t addr, unsigned int val); #else @@ -97,6 +98,7 @@ qcom_scm_set_remote_state(u32 state,u32 id) { return -ENODEV; } static inline int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare) { return -ENODEV; } static inline int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size) { return -ENODEV; } static inline int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare) { return -ENODEV; } +static inline int qcom_scm_qsmmu500_wait_safe_toggle(bool en) { return -ENODEV; } static inline int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val) { return -ENODEV; } static inline int qcom_scm_io_writel(phys_addr_t addr, unsigned int val) { return -ENODEV; } #endif -- cgit v1.3-6-gb490