linux-kernel - [PATCH v4 05/12] iommu/vt-d: Make domain attach helpers to be extern

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Message-Id: <20230724111335.107427-6-yi.l.liu@intel.com>
Date:   Mon, 24 Jul 2023 04:13:27 -0700
From:   Yi Liu <yi.l.liu@...el.com>
To:     joro@...tes.org, alex.williamson@...hat.com, jgg@...dia.com,
        kevin.tian@...el.com, robin.murphy@....com,
        baolu.lu@...ux.intel.com
Cc:     cohuck@...hat.com, eric.auger@...hat.com, nicolinc@...dia.com,
        kvm@...r.kernel.org, mjrosato@...ux.ibm.com,
        chao.p.peng@...ux.intel.com, yi.l.liu@...el.com,
        yi.y.sun@...ux.intel.com, peterx@...hat.com, jasowang@...hat.com,
        shameerali.kolothum.thodi@...wei.com, lulu@...hat.com,
        suravee.suthikulpanit@....com, iommu@...ts.linux.dev,
        linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        zhenzhong.duan@...el.com
Subject: [PATCH v4 05/12] iommu/vt-d: Make domain attach helpers to be extern

This makes the helpers visible to nested.c.

Suggested-by: Lu Baolu <baolu.lu@...ux.intel.com>
Signed-off-by: Yi Liu <yi.l.liu@...el.com>
---
 drivers/iommu/intel/iommu.c | 17 +++++++----------
 drivers/iommu/intel/iommu.h |  8 ++++++++
 2 files changed, 15 insertions(+), 10 deletions(-)

diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index 5c8c5cdc36cf..289e8c2417ad 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -277,7 +277,6 @@ static LIST_HEAD(dmar_satc_units);
 #define for_each_rmrr_units(rmrr) \
 	list_for_each_entry(rmrr, &dmar_rmrr_units, list)
 
-static void device_block_translation(struct device *dev);
 static void intel_iommu_domain_free(struct iommu_domain *domain);
 
 int dmar_disabled = !IS_ENABLED(CONFIG_INTEL_IOMMU_DEFAULT_ON);
@@ -555,7 +554,7 @@ static unsigned long domain_super_pgsize_bitmap(struct dmar_domain *domain)
 }
 
 /* Some capabilities may be different across iommus */
-static void domain_update_iommu_cap(struct dmar_domain *domain)
+void domain_update_iommu_cap(struct dmar_domain *domain)
 {
 	domain_update_iommu_coherency(domain);
 	domain->iommu_superpage = domain_update_iommu_superpage(domain, NULL);
@@ -1732,8 +1731,7 @@ static struct dmar_domain *alloc_domain(unsigned int type)
 	return domain;
 }
 
-static int domain_attach_iommu(struct dmar_domain *domain,
-			       struct intel_iommu *iommu)
+int domain_attach_iommu(struct dmar_domain *domain, struct intel_iommu *iommu)
 {
 	struct iommu_domain_info *info, *curr;
 	unsigned long ndomains;
@@ -1782,8 +1780,7 @@ static int domain_attach_iommu(struct dmar_domain *domain,
 	return ret;
 }
 
-static void domain_detach_iommu(struct dmar_domain *domain,
-				struct intel_iommu *iommu)
+void domain_detach_iommu(struct dmar_domain *domain, struct intel_iommu *iommu)
 {
 	struct iommu_domain_info *info;
 
@@ -3987,7 +3984,7 @@ static void dmar_remove_one_dev_info(struct device *dev)
  * all DMA requests without PASID from the device are blocked. If the page
  * table has been set, clean up the data structures.
  */
-static void device_block_translation(struct device *dev)
+void device_block_translation(struct device *dev)
 {
 	struct device_domain_info *info = dev_iommu_priv_get(dev);
 	struct intel_iommu *iommu = info->iommu;
@@ -4093,8 +4090,8 @@ static void intel_iommu_domain_free(struct iommu_domain *domain)
 		domain_exit(to_dmar_domain(domain));
 }
 
-static int prepare_domain_attach_device(struct iommu_domain *domain,
-					struct device *dev)
+int prepare_domain_attach_device(struct iommu_domain *domain,
+				 struct device *dev)
 {
 	struct dmar_domain *dmar_domain = to_dmar_domain(domain);
 	struct intel_iommu *iommu;
@@ -4334,7 +4331,7 @@ static void domain_set_force_snooping(struct dmar_domain *domain)
 						     PASID_RID2PASID);
 }
 
-static bool intel_iommu_enforce_cache_coherency(struct iommu_domain *domain)
+bool intel_iommu_enforce_cache_coherency(struct iommu_domain *domain)
 {
 	struct dmar_domain *dmar_domain = to_dmar_domain(domain);
 	unsigned long flags;
diff --git a/drivers/iommu/intel/iommu.h b/drivers/iommu/intel/iommu.h
index b3edad7359c9..4b12166a9c3f 100644
--- a/drivers/iommu/intel/iommu.h
+++ b/drivers/iommu/intel/iommu.h
@@ -852,6 +852,14 @@ int qi_submit_sync(struct intel_iommu *iommu, struct qi_desc *desc,
  */
 #define QI_OPT_WAIT_DRAIN		BIT(0)
 
+int domain_attach_iommu(struct dmar_domain *domain, struct intel_iommu *iommu);
+void domain_detach_iommu(struct dmar_domain *domain, struct intel_iommu *iommu);
+void device_block_translation(struct device *dev);
+int prepare_domain_attach_device(struct iommu_domain *domain,
+				 struct device *dev);
+bool intel_iommu_enforce_cache_coherency(struct iommu_domain *domain);
+void domain_update_iommu_cap(struct dmar_domain *domain);
+
 int dmar_ir_support(void);
 
 void *alloc_pgtable_page(int node, gfp_t gfp);
-- 
2.34.1