This adds a new SCM memprotect command to set virtual address ranges.
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@xxxxxxxxxx>
Reviewed-by: Elliot Berman <eberman@xxxxxxxxxxxxxx>
Acked-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
---
drivers/firmware/qcom_scm.c | 24 ++++++++++++++++++++++++
drivers/firmware/qcom_scm.h | 1 +
include/linux/qcom_scm.h | 7 +++++++
3 files changed, 32 insertions(+)
diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
index e8bbf2d38ae7..7be48c1bec96 100644
--- a/drivers/firmware/qcom_scm.c
+++ b/drivers/firmware/qcom_scm.c
@@ -756,6 +756,30 @@ int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare)
}
EXPORT_SYMBOL(qcom_scm_iommu_secure_ptbl_init);
+int qcom_scm_mem_protect_video_var(u32 cp_start, u32 cp_size,
+ u32 cp_nonpixel_start,
+ u32 cp_nonpixel_size)
+{
+ int ret;
+ struct qcom_scm_desc desc = {
+ .svc = QCOM_SCM_SVC_MP,
+ .cmd = QCOM_SCM_MP_VIDEO_VAR,
+ .arginfo = QCOM_SCM_ARGS(4, QCOM_SCM_VAL, QCOM_SCM_VAL,
+ QCOM_SCM_VAL, QCOM_SCM_VAL),
+ .args[0] = cp_start,
+ .args[1] = cp_size,
+ .args[2] = cp_nonpixel_start,
+ .args[3] = cp_nonpixel_size,
+ .owner = ARM_SMCCC_OWNER_SIP,
+ };
+ struct qcom_scm_res res;
+
+ ret = qcom_scm_call(__scm->dev, &desc, &res);
+
+ return ret ? : res.result[0];
+}
+EXPORT_SYMBOL(qcom_scm_mem_protect_video_var);
+
static int __qcom_scm_assign_mem(struct device *dev, phys_addr_t mem_region,
size_t mem_sz, phys_addr_t src, size_t src_sz,
phys_addr_t dest, size_t dest_sz)
diff --git a/drivers/firmware/qcom_scm.h b/drivers/firmware/qcom_scm.h
index 38ea614d29fe..95cd1ac30ab0 100644
--- a/drivers/firmware/qcom_scm.h
+++ b/drivers/firmware/qcom_scm.h
@@ -97,6 +97,7 @@ extern int scm_legacy_call(struct device *dev, const struct qcom_scm_desc *desc,
#define QCOM_SCM_MP_RESTORE_SEC_CFG 0x02
#define QCOM_SCM_MP_IOMMU_SECURE_PTBL_SIZE 0x03
#define QCOM_SCM_MP_IOMMU_SECURE_PTBL_INIT 0x04
+#define QCOM_SCM_MP_VIDEO_VAR 0x08
#define QCOM_SCM_MP_ASSIGN 0x16
#define QCOM_SCM_SVC_OCMEM 0x0f
diff --git a/include/linux/qcom_scm.h b/include/linux/qcom_scm.h
index 2e1193a3fb5f..0165824c5128 100644
--- a/include/linux/qcom_scm.h
+++ b/include/linux/qcom_scm.h
@@ -84,6 +84,9 @@ extern bool qcom_scm_restore_sec_cfg_available(void);
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_mem_protect_video_var(u32 cp_start, u32 cp_size,
+ u32 cp_nonpixel_start,
+ u32 cp_nonpixel_size);
extern int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
unsigned int *src,
const struct qcom_scm_vmperm *newvm,
@@ -141,6 +144,10 @@ 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; }
+extern inline int qcom_scm_mem_protect_video_var(u32 cp_start, u32 cp_size,
+ u32 cp_nonpixel_start,
+ u32 cp_nonpixel_size)
+ { return -ENODEV; }
static inline int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
unsigned int *src, const struct qcom_scm_vmperm *newvm,
unsigned int dest_cnt) { return -ENODEV; }
--
2.17.1
