3 files changed, 13 insertions, 114 deletions
diff --git a/include/linux/ioasid.h b/include/linux/ioasid.h
deleted file mode 100644
index 836ae09e92c2..000000000000
--- a/include/linux/ioasid.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __LINUX_IOASID_H
-#define __LINUX_IOASID_H
-
-#include <linux/types.h>
-#include <linux/errno.h>
-
-#define INVALID_IOASID ((ioasid_t)-1)
-typedef unsigned int ioasid_t;
-typedef ioasid_t (*ioasid_alloc_fn_t)(ioasid_t min, ioasid_t max, void *data);
-typedef void (*ioasid_free_fn_t)(ioasid_t ioasid, void *data);
-
-struct ioasid_set {
-	int dummy;
-};
-
-/**
- * struct ioasid_allocator_ops - IOASID allocator helper functions and data
- *
- * @alloc:	helper function to allocate IOASID
- * @free:	helper function to free IOASID
- * @list:	for tracking ops that share helper functions but not data
- * @pdata:	data belong to the allocator, provided when calling alloc()
- */
-struct ioasid_allocator_ops {
-	ioasid_alloc_fn_t alloc;
-	ioasid_free_fn_t free;
-	struct list_head list;
-	void *pdata;
-};
-
-#define DECLARE_IOASID_SET(name) struct ioasid_set name = { 0 }
-
-#if IS_ENABLED(CONFIG_IOASID)
-ioasid_t ioasid_alloc(struct ioasid_set *set, ioasid_t min, ioasid_t max,
-		      void *private);
-void ioasid_free(ioasid_t ioasid);
-void *ioasid_find(struct ioasid_set *set, ioasid_t ioasid,
-		  bool (*getter)(void *));
-int ioasid_register_allocator(struct ioasid_allocator_ops *allocator);
-void ioasid_unregister_allocator(struct ioasid_allocator_ops *allocator);
-int ioasid_set_data(ioasid_t ioasid, void *data);
-
-#else /* !CONFIG_IOASID */
-static inline ioasid_t ioasid_alloc(struct ioasid_set *set, ioasid_t min,
-				    ioasid_t max, void *private)
-{
-	return INVALID_IOASID;
-}
-
-static inline void ioasid_free(ioasid_t ioasid) { }
-
-static inline void *ioasid_find(struct ioasid_set *set, ioasid_t ioasid,
-				bool (*getter)(void *))
-{
-	return NULL;
-}
-
-static inline int ioasid_register_allocator(struct ioasid_allocator_ops *allocator)
-{
-	return -ENOTSUPP;
-}
-
-static inline void ioasid_unregister_allocator(struct ioasid_allocator_ops *allocator)
-{
-}
-
-static inline int ioasid_set_data(ioasid_t ioasid, void *data)
-{
-	return -ENOTSUPP;
-}
-
-#endif /* CONFIG_IOASID */
-#endif /* __LINUX_IOASID_H */
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 0fd4e6734d5b..e8c9a7da1060 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -13,7 +13,6 @@
 #include <linux/errno.h>
 #include <linux/err.h>
 #include <linux/of.h>
-#include <linux/ioasid.h>
 #include <uapi/linux/iommu.h>
 
 #define IOMMU_READ	(1 << 0)
@@ -192,6 +191,7 @@ enum iommu_dev_features {
 };
 
 #define IOMMU_PASID_INVALID	(-1U)
+typedef unsigned int ioasid_t;
 
 #ifdef CONFIG_IOMMU_API
 
@@ -460,7 +460,6 @@ extern bool iommu_present(const struct bus_type *bus);
 extern bool device_iommu_capable(struct device *dev, enum iommu_cap cap);
 extern bool iommu_group_has_isolated_msi(struct iommu_group *group);
 extern struct iommu_domain *iommu_domain_alloc(const struct bus_type *bus);
-extern struct iommu_group *iommu_group_get_by_id(int id);
 extern void iommu_domain_free(struct iommu_domain *domain);
 extern int iommu_attach_device(struct iommu_domain *domain,
 			       struct device *dev);
@@ -699,7 +698,6 @@ static inline void dev_iommu_priv_set(struct device *dev, void *priv)
 }
 
 int iommu_probe_device(struct device *dev);
-void iommu_release_device(struct device *dev);
 
 int iommu_dev_enable_feature(struct device *dev, enum iommu_dev_features f);
 int iommu_dev_disable_feature(struct device *dev, enum iommu_dev_features f);
@@ -747,11 +745,6 @@ static inline struct iommu_domain *iommu_domain_alloc(const struct bus_type *bus
 	return NULL;
 }
 
-static inline struct iommu_group *iommu_group_get_by_id(int id)
-{
-	return NULL;
-}
-
 static inline void iommu_domain_free(struct iommu_domain *domain)
 {
 }
@@ -1173,6 +1166,15 @@ static inline bool tegra_dev_iommu_get_stream_id(struct device *dev, u32 *stream
 }
 
 #ifdef CONFIG_IOMMU_SVA
+static inline void mm_pasid_init(struct mm_struct *mm)
+{
+	mm->pasid = IOMMU_PASID_INVALID;
+}
+static inline bool mm_valid_pasid(struct mm_struct *mm)
+{
+	return mm->pasid != IOMMU_PASID_INVALID;
+}
+void mm_pasid_drop(struct mm_struct *mm);
 struct iommu_sva *iommu_sva_bind_device(struct device *dev,
 					struct mm_struct *mm);
 void iommu_sva_unbind_device(struct iommu_sva *handle);
@@ -1192,6 +1194,9 @@ static inline u32 iommu_sva_get_pasid(struct iommu_sva *handle)
 {
 	return IOMMU_PASID_INVALID;
 }
+static inline void mm_pasid_init(struct mm_struct *mm) {}
+static inline bool mm_valid_pasid(struct mm_struct *mm) { return false; }
+static inline void mm_pasid_drop(struct mm_struct *mm) {}
 #endif /* CONFIG_IOMMU_SVA */
 
 #endif /* __LINUX_IOMMU_H */
diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h
index b114fbe3a93b..8d89c8c4fac1 100644
--- a/include/linux/sched/mm.h
+++ b/include/linux/sched/mm.h
@@ -8,7 +8,6 @@
 #include <linux/mm_types.h>
 #include <linux/gfp.h>
 #include <linux/sync_core.h>
-#include <linux/ioasid.h>
 
 /*
  * Routines for handling mm_structs
@@ -484,35 +483,4 @@ static inline void membarrier_update_current_mm(struct mm_struct *next_mm)
 }
 #endif
 
-#ifdef CONFIG_IOMMU_SVA
-static inline void mm_pasid_init(struct mm_struct *mm)
-{
-	mm->pasid = INVALID_IOASID;
-}
-
-static inline bool mm_valid_pasid(struct mm_struct *mm)
-{
-	return mm->pasid != INVALID_IOASID;
-}
-
-/* Associate a PASID with an mm_struct: */
-static inline void mm_pasid_set(struct mm_struct *mm, u32 pasid)
-{
-	mm->pasid = pasid;
-}
-
-static inline void mm_pasid_drop(struct mm_struct *mm)
-{
-	if (mm_valid_pasid(mm)) {
-		ioasid_free(mm->pasid);
-		mm->pasid = INVALID_IOASID;
-	}
-}
-#else
-static inline void mm_pasid_init(struct mm_struct *mm) {}
-static inline bool mm_valid_pasid(struct mm_struct *mm) { return false; }
-static inline void mm_pasid_set(struct mm_struct *mm, u32 pasid) {}
-static inline void mm_pasid_drop(struct mm_struct *mm) {}
-#endif
-
 #endif /* _LINUX_SCHED_MM_H */