These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / arch / arm / include / asm / dma-mapping.h

diff --git a/kernel/arch/arm/include/asm/dma-mapping.h b/kernel/arch/arm/include/asm/dma-mapping.h
index b52101d..ccb3aa6 100644 (file)
--- a/kernel/arch/arm/include/asm/dma-mapping.h
+++ b/kernel/arch/arm/include/asm/dma-mapping.h
@@ -8,13 +8,12 @@
 #include <linux/dma-attrs.h>
 #include <linux/dma-debug.h>
 
-#include <asm-generic/dma-coherent.h>
 #include <asm/memory.h>
 
 #include <xen/xen.h>
 #include <asm/xen/hypervisor.h>
 
-#define DMA_ERROR_CODE (~0)
+#define DMA_ERROR_CODE (~(dma_addr_t)0x0)
 extern struct dma_map_ops arm_dma_ops;
 extern struct dma_map_ops arm_coherent_dma_ops;
 
@@ -39,12 +38,15 @@ static inline void set_dma_ops(struct device *dev, struct dma_map_ops *ops)
        dev->archdata.dma_ops = ops;
 }
 
-#include <asm-generic/dma-mapping-common.h>
+#define HAVE_ARCH_DMA_SUPPORTED 1
+extern int dma_supported(struct device *dev, u64 mask);
 
-static inline int dma_set_mask(struct device *dev, u64 mask)
-{
-       return get_dma_ops(dev)->set_dma_mask(dev, mask);
-}
+/*
+ * Note that while the generic code provides dummy dma_{alloc,free}_noncoherent
+ * implementations, we don't provide a dma_cache_sync function so drivers using
+ * this API are highlighted with build warnings.
+ */
+#include <asm-generic/dma-mapping-common.h>
 
 #ifdef __arch_page_to_dma
 #error Please update to __arch_pfn_to_dma
@@ -167,32 +169,6 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
 
 static inline void dma_mark_clean(void *addr, size_t size) { }
 
-/*
- * DMA errors are defined by all-bits-set in the DMA address.
- */
-static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
-       debug_dma_mapping_error(dev, dma_addr);
-       return dma_addr == DMA_ERROR_CODE;
-}
-
-/*
- * Dummy noncoherent implementation.  We don't provide a dma_cache_sync
- * function so drivers using this API are highlighted with build warnings.
- */
-static inline void *dma_alloc_noncoherent(struct device *dev, size_t size,
-               dma_addr_t *handle, gfp_t gfp)
-{
-       return NULL;
-}
-
-static inline void dma_free_noncoherent(struct device *dev, size_t size,
-               void *cpu_addr, dma_addr_t handle)
-{
-}
-
-extern int dma_supported(struct device *dev, u64 mask);
-
 extern int arm_dma_set_mask(struct device *dev, u64 dma_mask);
 
 /**
@@ -209,21 +185,6 @@ extern int arm_dma_set_mask(struct device *dev, u64 dma_mask);
 extern void *arm_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
                           gfp_t gfp, struct dma_attrs *attrs);
 
-#define dma_alloc_coherent(d, s, h, f) dma_alloc_attrs(d, s, h, f, NULL)
-
-static inline void *dma_alloc_attrs(struct device *dev, size_t size,
-                                      dma_addr_t *dma_handle, gfp_t flag,
-                                      struct dma_attrs *attrs)
-{
-       struct dma_map_ops *ops = get_dma_ops(dev);
-       void *cpu_addr;
-       BUG_ON(!ops);
-
-       cpu_addr = ops->alloc(dev, size, dma_handle, flag, attrs);
-       debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr);
-       return cpu_addr;
-}
-
 /**
  * arm_dma_free - free memory allocated by arm_dma_alloc
  * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices
@@ -241,19 +202,6 @@ static inline void *dma_alloc_attrs(struct device *dev, size_t size,
 extern void arm_dma_free(struct device *dev, size_t size, void *cpu_addr,
                         dma_addr_t handle, struct dma_attrs *attrs);
 
-#define dma_free_coherent(d, s, c, h) dma_free_attrs(d, s, c, h, NULL)
-
-static inline void dma_free_attrs(struct device *dev, size_t size,
-                                    void *cpu_addr, dma_addr_t dma_handle,
-                                    struct dma_attrs *attrs)
-{
-       struct dma_map_ops *ops = get_dma_ops(dev);
-       BUG_ON(!ops);
-
-       debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);
-       ops->free(dev, size, cpu_addr, dma_handle, attrs);
-}
-
 /**
  * arm_dma_mmap - map a coherent DMA allocation into user space
  * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices