[RFC PATCH 1/3] iommu/arm-smmu-v3: Export cd/ste get functions

[Zhou Wang]

Export arm_smmu_get_cd_ptr and arm_smmu_get_step_for_sid to let debug
interface to get related cd and ste.

Signed-off-by: Zhou Wang <wangzhou1 at hisilicon.com>
---
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 7 ++++---
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 2 ++
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index 8ca7415..b65f63e2 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -947,8 +947,7 @@ static void arm_smmu_write_cd_l1_desc(__le64 *dst,
 	WRITE_ONCE(*dst, cpu_to_le64(val));
 }
 
-static __le64 *arm_smmu_get_cd_ptr(struct arm_smmu_domain *smmu_domain,
-				   u32 ssid)
+__le64 *arm_smmu_get_cd_ptr(struct arm_smmu_domain *smmu_domain, u32 ssid)
 {
 	__le64 *l1ptr;
 	unsigned int idx;
@@ -973,6 +972,7 @@ static __le64 *arm_smmu_get_cd_ptr(struct arm_smmu_domain *smmu_domain,
 	idx = ssid & (CTXDESC_L2_ENTRIES - 1);
 	return l1_desc->l2ptr + idx * CTXDESC_CD_DWORDS;
 }
+EXPORT_SYMBOL_GPL(arm_smmu_get_cd_ptr);
 
 int arm_smmu_write_ctx_desc(struct arm_smmu_domain *smmu_domain, int ssid,
 			    struct arm_smmu_ctx_desc *cd)
@@ -2013,7 +2013,7 @@ static int arm_smmu_domain_finalise(struct iommu_domain *domain,
 	return 0;
 }
 
-static __le64 *arm_smmu_get_step_for_sid(struct arm_smmu_device *smmu, u32 sid)
+__le64 *arm_smmu_get_step_for_sid(struct arm_smmu_device *smmu, u32 sid)
 {
 	__le64 *step;
 	struct arm_smmu_strtab_cfg *cfg = &smmu->strtab_cfg;
@@ -2034,6 +2034,7 @@ static __le64 *arm_smmu_get_step_for_sid(struct arm_smmu_device *smmu, u32 sid)
 
 	return step;
 }
+EXPORT_SYMBOL_GPL(arm_smmu_get_step_for_sid);
 
 static void arm_smmu_install_ste_for_dev(struct arm_smmu_master *master)
 {
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
index 96c2e95..3e7af39 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
@@ -697,6 +697,8 @@ void arm_smmu_tlb_inv_asid(struct arm_smmu_device *smmu, u16 asid);
 bool arm_smmu_free_asid(struct arm_smmu_ctx_desc *cd);
 int arm_smmu_atc_inv_domain(struct arm_smmu_domain *smmu_domain, int ssid,
 			    unsigned long iova, size_t size);
+__le64 *arm_smmu_get_cd_ptr(struct arm_smmu_domain *smmu_domain, u32 ssid);
+__le64 *arm_smmu_get_step_for_sid(struct arm_smmu_device *smmu, u32 sid);
 
 #ifdef CONFIG_ARM_SMMU_V3_SVA
 bool arm_smmu_sva_supported(struct arm_smmu_device *smmu);
-- 
2.8.1