init android origin source code

1 files changed, 237 insertions, 0 deletions

diff --git a/ANDROID_3.4.5/include/linux/dma-mapping.h b/ANDROID_3.4.5/include/linux/dma-mapping.h
new file mode 100644
index 00000000..dfc099e5
--- /dev/null
+++ b/ANDROID_3.4.5/include/linux/dma-mapping.h
@@ -0,0 +1,237 @@
+#ifndef _LINUX_DMA_MAPPING_H
+#define _LINUX_DMA_MAPPING_H
+
+#include <linux/string.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/dma-attrs.h>
+#include <linux/dma-direction.h>
+#include <linux/scatterlist.h>
+
+struct dma_map_ops {
+	void* (*alloc)(struct device *dev, size_t size,
+				dma_addr_t *dma_handle, gfp_t gfp,
+				struct dma_attrs *attrs);
+	void (*free)(struct device *dev, size_t size,
+			      void *vaddr, dma_addr_t dma_handle,
+			      struct dma_attrs *attrs);
+	int (*mmap)(struct device *, struct vm_area_struct *,
+			  void *, dma_addr_t, size_t, struct dma_attrs *attrs);
+
+	dma_addr_t (*map_page)(struct device *dev, struct page *page,
+			       unsigned long offset, size_t size,
+			       enum dma_data_direction dir,
+			       struct dma_attrs *attrs);
+	void (*unmap_page)(struct device *dev, dma_addr_t dma_handle,
+			   size_t size, enum dma_data_direction dir,
+			   struct dma_attrs *attrs);
+	int (*map_sg)(struct device *dev, struct scatterlist *sg,
+		      int nents, enum dma_data_direction dir,
+		      struct dma_attrs *attrs);
+	void (*unmap_sg)(struct device *dev,
+			 struct scatterlist *sg, int nents,
+			 enum dma_data_direction dir,
+			 struct dma_attrs *attrs);
+	void (*sync_single_for_cpu)(struct device *dev,
+				    dma_addr_t dma_handle, size_t size,
+				    enum dma_data_direction dir);
+	void (*sync_single_for_device)(struct device *dev,
+				       dma_addr_t dma_handle, size_t size,
+				       enum dma_data_direction dir);
+	void (*sync_sg_for_cpu)(struct device *dev,
+				struct scatterlist *sg, int nents,
+				enum dma_data_direction dir);
+	void (*sync_sg_for_device)(struct device *dev,
+				   struct scatterlist *sg, int nents,
+				   enum dma_data_direction dir);
+	int (*mapping_error)(struct device *dev, dma_addr_t dma_addr);
+	int (*dma_supported)(struct device *dev, u64 mask);
+	int (*set_dma_mask)(struct device *dev, u64 mask);
+#ifdef ARCH_HAS_DMA_GET_REQUIRED_MASK
+	u64 (*get_required_mask)(struct device *dev);
+#endif
+	int is_phys;
+};
+
+#define DMA_BIT_MASK(n)	(((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
+
+#define DMA_MASK_NONE	0x0ULL
+
+static inline int valid_dma_direction(int dma_direction)
+{
+	return ((dma_direction == DMA_BIDIRECTIONAL) ||
+		(dma_direction == DMA_TO_DEVICE) ||
+		(dma_direction == DMA_FROM_DEVICE));
+}
+
+static inline int is_device_dma_capable(struct device *dev)
+{
+	return dev->dma_mask != NULL && *dev->dma_mask != DMA_MASK_NONE;
+}
+
+#ifdef CONFIG_HAS_DMA
+#include <asm/dma-mapping.h>
+#else
+#include <asm-generic/dma-mapping-broken.h>
+#endif
+
+static inline u64 dma_get_mask(struct device *dev)
+{
+	if (dev && dev->dma_mask && *dev->dma_mask)
+		return *dev->dma_mask;
+	return DMA_BIT_MASK(32);
+}
+
+#ifdef CONFIG_ARCH_HAS_DMA_SET_COHERENT_MASK
+int dma_set_coherent_mask(struct device *dev, u64 mask);
+#else
+static inline int dma_set_coherent_mask(struct device *dev, u64 mask)
+{
+	if (!dma_supported(dev, mask))
+		return -EIO;
+	dev->coherent_dma_mask = mask;
+	return 0;
+}
+#endif
+
+extern u64 dma_get_required_mask(struct device *dev);
+
+static inline unsigned int dma_get_max_seg_size(struct device *dev)
+{
+	return dev->dma_parms ? dev->dma_parms->max_segment_size : 65536;
+}
+
+static inline unsigned int dma_set_max_seg_size(struct device *dev,
+						unsigned int size)
+{
+	if (dev->dma_parms) {
+		dev->dma_parms->max_segment_size = size;
+		return 0;
+	} else
+		return -EIO;
+}
+
+static inline unsigned long dma_get_seg_boundary(struct device *dev)
+{
+	return dev->dma_parms ?
+		dev->dma_parms->segment_boundary_mask : 0xffffffff;
+}
+
+static inline int dma_set_seg_boundary(struct device *dev, unsigned long mask)
+{
+	if (dev->dma_parms) {
+		dev->dma_parms->segment_boundary_mask = mask;
+		return 0;
+	} else
+		return -EIO;
+}
+
+static inline void *dma_zalloc_coherent(struct device *dev, size_t size,
+					dma_addr_t *dma_handle, gfp_t flag)
+{
+	void *ret = dma_alloc_coherent(dev, size, dma_handle, flag);
+	if (ret)
+		memset(ret, 0, size);
+	return ret;
+}
+
+#ifdef CONFIG_HAS_DMA
+static inline int dma_get_cache_alignment(void)
+{
+#ifdef ARCH_DMA_MINALIGN
+	return ARCH_DMA_MINALIGN;
+#endif
+	return 1;
+}
+#endif
+
+/* flags for the coherent memory api */
+#define	DMA_MEMORY_MAP			0x01
+#define DMA_MEMORY_IO			0x02
+#define DMA_MEMORY_INCLUDES_CHILDREN	0x04
+#define DMA_MEMORY_EXCLUSIVE		0x08
+
+#ifndef ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
+static inline int
+dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
+			    dma_addr_t device_addr, size_t size, int flags)
+{
+	return 0;
+}
+
+static inline void
+dma_release_declared_memory(struct device *dev)
+{
+}
+
+static inline void *
+dma_mark_declared_memory_occupied(struct device *dev,
+				  dma_addr_t device_addr, size_t size)
+{
+	return ERR_PTR(-EBUSY);
+}
+#endif
+
+/*
+ * Managed DMA API
+ */
+extern void *dmam_alloc_coherent(struct device *dev, size_t size,
+				 dma_addr_t *dma_handle, gfp_t gfp);
+extern void dmam_free_coherent(struct device *dev, size_t size, void *vaddr,
+			       dma_addr_t dma_handle);
+extern void *dmam_alloc_noncoherent(struct device *dev, size_t size,
+				    dma_addr_t *dma_handle, gfp_t gfp);
+extern void dmam_free_noncoherent(struct device *dev, size_t size, void *vaddr,
+				  dma_addr_t dma_handle);
+#ifdef ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
+extern int dmam_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
+					dma_addr_t device_addr, size_t size,
+					int flags);
+extern void dmam_release_declared_memory(struct device *dev);
+#else /* ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY */
+static inline int dmam_declare_coherent_memory(struct device *dev,
+				dma_addr_t bus_addr, dma_addr_t device_addr,
+				size_t size, gfp_t gfp)
+{
+	return 0;
+}
+
+static inline void dmam_release_declared_memory(struct device *dev)
+{
+}
+#endif /* ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY */
+
+#ifndef CONFIG_HAVE_DMA_ATTRS
+struct dma_attrs;
+
+#define dma_map_single_attrs(dev, cpu_addr, size, dir, attrs) \
+	dma_map_single(dev, cpu_addr, size, dir)
+
+#define dma_unmap_single_attrs(dev, dma_addr, size, dir, attrs) \
+	dma_unmap_single(dev, dma_addr, size, dir)
+
+#define dma_map_sg_attrs(dev, sgl, nents, dir, attrs) \
+	dma_map_sg(dev, sgl, nents, dir)
+
+#define dma_unmap_sg_attrs(dev, sgl, nents, dir, attrs) \
+	dma_unmap_sg(dev, sgl, nents, dir)
+
+#endif /* CONFIG_HAVE_DMA_ATTRS */
+
+#ifdef CONFIG_NEED_DMA_MAP_STATE
+#define DEFINE_DMA_UNMAP_ADDR(ADDR_NAME)        dma_addr_t ADDR_NAME
+#define DEFINE_DMA_UNMAP_LEN(LEN_NAME)          __u32 LEN_NAME
+#define dma_unmap_addr(PTR, ADDR_NAME)           ((PTR)->ADDR_NAME)
+#define dma_unmap_addr_set(PTR, ADDR_NAME, VAL)  (((PTR)->ADDR_NAME) = (VAL))
+#define dma_unmap_len(PTR, LEN_NAME)             ((PTR)->LEN_NAME)
+#define dma_unmap_len_set(PTR, LEN_NAME, VAL)    (((PTR)->LEN_NAME) = (VAL))
+#else
+#define DEFINE_DMA_UNMAP_ADDR(ADDR_NAME)
+#define DEFINE_DMA_UNMAP_LEN(LEN_NAME)
+#define dma_unmap_addr(PTR, ADDR_NAME)           (0)
+#define dma_unmap_addr_set(PTR, ADDR_NAME, VAL)  do { } while (0)
+#define dma_unmap_len(PTR, LEN_NAME)             (0)
+#define dma_unmap_len_set(PTR, LEN_NAME, VAL)    do { } while (0)
+#endif
+
+#endif