1 files changed, 91 insertions, 0 deletions

diff --git a/include/linux/iova.h b/include/linux/iova.h
index f27bb2c62fca..548982ad5f2f 100644
--- a/include/linux/iova.h
+++ b/include/linux/iova.h
@@ -82,6 +82,7 @@ static inline unsigned long iova_pfn(struct iova_domain *iovad, dma_addr_t iova)
         return iova >> iova_shift(iovad);
 }
 
+#ifdef CONFIG_IOMMU_IOVA
 int iova_cache_get(void);
 void iova_cache_put(void);
 
@@ -106,5 +107,95 @@ void put_iova_domain(struct iova_domain *iovad);
 struct iova *split_and_remove_iova(struct iova_domain *iovad,
         struct iova *iova, unsigned long pfn_lo, unsigned long pfn_hi);
 void free_cpu_cached_iovas(unsigned int cpu, struct iova_domain *iovad);
+#else
+static inline int iova_cache_get(void)
+{
+        return -ENOTSUPP;
+}
+
+static inline void iova_cache_put(void)
+{
+}
+
+static inline struct iova *alloc_iova_mem(void)
+{
+        return NULL;
+}
+
+static inline void free_iova_mem(struct iova *iova)
+{
+}
+
+static inline void free_iova(struct iova_domain *iovad, unsigned long pfn)
+{
+}
+
+static inline void __free_iova(struct iova_domain *iovad, struct iova *iova)
+{
+}
+
+static inline struct iova *alloc_iova(struct iova_domain *iovad,
+                                      unsigned long size,
+                                      unsigned long limit_pfn,
+                                      bool size_aligned)
+{
+        return NULL;
+}
+
+static inline void free_iova_fast(struct iova_domain *iovad,
+                                  unsigned long pfn,
+                                  unsigned long size)
+{
+}
+
+static inline unsigned long alloc_iova_fast(struct iova_domain *iovad,
+                                            unsigned long size,
+                                            unsigned long limit_pfn)
+{
+        return 0;
+}
+
+static inline struct iova *reserve_iova(struct iova_domain *iovad,
+                                        unsigned long pfn_lo,
+                                        unsigned long pfn_hi)
+{
+        return NULL;
+}
+
+static inline void copy_reserved_iova(struct iova_domain *from,
+                                      struct iova_domain *to)
+{
+}
+
+static inline void init_iova_domain(struct iova_domain *iovad,
+                                    unsigned long granule,
+                                    unsigned long start_pfn,
+                                    unsigned long pfn_32bit)
+{
+}
+
+static inline struct iova *find_iova(struct iova_domain *iovad,
+                                     unsigned long pfn)
+{
+        return NULL;
+}
+
+static inline void put_iova_domain(struct iova_domain *iovad)
+{
+}
+
+static inline struct iova *split_and_remove_iova(struct iova_domain *iovad,
+                                                 struct iova *iova,
+                                                 unsigned long pfn_lo,
+                                                 unsigned long pfn_hi)
+{
+        return NULL;
+}
+
+static inline void free_cpu_cached_iovas(unsigned int cpu,
+                                         struct iova_domain *iovad)
+{
+}
+#endif
 
 #endif