1 files changed, 0 insertions, 269 deletions
diff --git a/ANDROID_3.4.5/include/linux/scatterlist.h b/ANDROID_3.4.5/include/linux/scatterlist.h
deleted file mode 100644
index ac9586da..00000000
--- a/ANDROID_3.4.5/include/linux/scatterlist.h
+++ /dev/null
@@ -1,269 +0,0 @@
-#ifndef _LINUX_SCATTERLIST_H
-#define _LINUX_SCATTERLIST_H
-
-#include <linux/string.h>
-#include <linux/bug.h>
-#include <linux/mm.h>
-
-#include <asm/types.h>
-#include <asm/scatterlist.h>
-#include <asm/io.h>
-
-struct sg_table {
-	struct scatterlist *sgl;	/* the list */
-	unsigned int nents;		/* number of mapped entries */
-	unsigned int orig_nents;	/* original size of list */
-};
-
-/*
- * Notes on SG table design.
- *
- * Architectures must provide an unsigned long page_link field in the
- * scatterlist struct. We use that to place the page pointer AND encode
- * information about the sg table as well. The two lower bits are reserved
- * for this information.
- *
- * If bit 0 is set, then the page_link contains a pointer to the next sg
- * table list. Otherwise the next entry is at sg + 1.
- *
- * If bit 1 is set, then this sg entry is the last element in a list.
- *
- * See sg_next().
- *
- */
-
-#define SG_MAGIC	0x87654321
-
-/*
- * We overload the LSB of the page pointer to indicate whether it's
- * a valid sg entry, or whether it points to the start of a new scatterlist.
- * Those low bits are there for everyone! (thanks mason :-)
- */
-#define sg_is_chain(sg)		((sg)->page_link & 0x01)
-#define sg_is_last(sg)		((sg)->page_link & 0x02)
-#define sg_chain_ptr(sg)	\
-	((struct scatterlist *) ((sg)->page_link & ~0x03))
-
-/**
- * sg_assign_page - Assign a given page to an SG entry
- * @sg:		    SG entry
- * @page:	    The page
- *
- * Description:
- *   Assign page to sg entry. Also see sg_set_page(), the most commonly used
- *   variant.
- *
- **/
-static inline void sg_assign_page(struct scatterlist *sg, struct page *page)
-{
-	unsigned long page_link = sg->page_link & 0x3;
-
-	/*
-	 * In order for the low bit stealing approach to work, pages
-	 * must be aligned at a 32-bit boundary as a minimum.
-	 */
-	BUG_ON((unsigned long) page & 0x03);
-#ifdef CONFIG_DEBUG_SG
-	BUG_ON(sg->sg_magic != SG_MAGIC);
-	BUG_ON(sg_is_chain(sg));
-#endif
-	sg->page_link = page_link | (unsigned long) page;
-}
-
-/**
- * sg_set_page - Set sg entry to point at given page
- * @sg:		 SG entry
- * @page:	 The page
- * @len:	 Length of data
- * @offset:	 Offset into page
- *
- * Description:
- *   Use this function to set an sg entry pointing at a page, never assign
- *   the page directly. We encode sg table information in the lower bits
- *   of the page pointer. See sg_page() for looking up the page belonging
- *   to an sg entry.
- *
- **/
-static inline void sg_set_page(struct scatterlist *sg, struct page *page,
-			       unsigned int len, unsigned int offset)
-{
-	sg_assign_page(sg, page);
-	sg->offset = offset;
-	sg->length = len;
-}
-
-static inline struct page *sg_page(struct scatterlist *sg)
-{
-#ifdef CONFIG_DEBUG_SG
-	BUG_ON(sg->sg_magic != SG_MAGIC);
-	BUG_ON(sg_is_chain(sg));
-#endif
-	return (struct page *)((sg)->page_link & ~0x3);
-}
-
-/**
- * sg_set_buf - Set sg entry to point at given data
- * @sg:		 SG entry
- * @buf:	 Data
- * @buflen:	 Data length
- *
- **/
-static inline void sg_set_buf(struct scatterlist *sg, const void *buf,
-			      unsigned int buflen)
-{
-	sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
-}
-
-/*
- * Loop over each sg element, following the pointer to a new list if necessary
- */
-#define for_each_sg(sglist, sg, nr, __i)	\
-	for (__i = 0, sg = (sglist); __i < (nr); __i++, sg = sg_next(sg))
-
-/**
- * sg_chain - Chain two sglists together
- * @prv:	First scatterlist
- * @prv_nents:	Number of entries in prv
- * @sgl:	Second scatterlist
- *
- * Description:
- *   Links @prv@ and @sgl@ together, to form a longer scatterlist.
- *
- **/
-static inline void sg_chain(struct scatterlist *prv, unsigned int prv_nents,
-			    struct scatterlist *sgl)
-{
-#ifndef ARCH_HAS_SG_CHAIN
-	BUG();
-#endif
-
-	/*
-	 * offset and length are unused for chain entry.  Clear them.
-	 */
-	prv[prv_nents - 1].offset = 0;
-	prv[prv_nents - 1].length = 0;
-
-	/*
-	 * Set lowest bit to indicate a link pointer, and make sure to clear
-	 * the termination bit if it happens to be set.
-	 */
-	prv[prv_nents - 1].page_link = ((unsigned long) sgl | 0x01) & ~0x02;
-}
-
-/**
- * sg_mark_end - Mark the end of the scatterlist
- * @sg:		 SG entryScatterlist
- *
- * Description:
- *   Marks the passed in sg entry as the termination point for the sg
- *   table. A call to sg_next() on this entry will return NULL.
- *
- **/
-static inline void sg_mark_end(struct scatterlist *sg)
-{
-#ifdef CONFIG_DEBUG_SG
-	BUG_ON(sg->sg_magic != SG_MAGIC);
-#endif
-	/*
-	 * Set termination bit, clear potential chain bit
-	 */
-	sg->page_link |= 0x02;
-	sg->page_link &= ~0x01;
-}
-
-/**
- * sg_phys - Return physical address of an sg entry
- * @sg:	     SG entry
- *
- * Description:
- *   This calls page_to_phys() on the page in this sg entry, and adds the
- *   sg offset. The caller must know that it is legal to call page_to_phys()
- *   on the sg page.
- *
- **/
-static inline dma_addr_t sg_phys(struct scatterlist *sg)
-{
-	return page_to_phys(sg_page(sg)) + sg->offset;
-}
-
-/**
- * sg_virt - Return virtual address of an sg entry
- * @sg:      SG entry
- *
- * Description:
- *   This calls page_address() on the page in this sg entry, and adds the
- *   sg offset. The caller must know that the sg page has a valid virtual
- *   mapping.
- *
- **/
-static inline void *sg_virt(struct scatterlist *sg)
-{
-	return page_address(sg_page(sg)) + sg->offset;
-}
-
-struct scatterlist *sg_next(struct scatterlist *);
-struct scatterlist *sg_last(struct scatterlist *s, unsigned int);
-void sg_init_table(struct scatterlist *, unsigned int);
-void sg_init_one(struct scatterlist *, const void *, unsigned int);
-
-typedef struct scatterlist *(sg_alloc_fn)(unsigned int, gfp_t);
-typedef void (sg_free_fn)(struct scatterlist *, unsigned int);
-
-void __sg_free_table(struct sg_table *, unsigned int, sg_free_fn *);
-void sg_free_table(struct sg_table *);
-int __sg_alloc_table(struct sg_table *, unsigned int, unsigned int, gfp_t,
-		     sg_alloc_fn *);
-int sg_alloc_table(struct sg_table *, unsigned int, gfp_t);
-
-size_t sg_copy_from_buffer(struct scatterlist *sgl, unsigned int nents,
-			   void *buf, size_t buflen);
-size_t sg_copy_to_buffer(struct scatterlist *sgl, unsigned int nents,
-			 void *buf, size_t buflen);
-
-/*
- * Maximum number of entries that will be allocated in one piece, if
- * a list larger than this is required then chaining will be utilized.
- */
-#define SG_MAX_SINGLE_ALLOC		(PAGE_SIZE / sizeof(struct scatterlist))
-
-
-/*
- * Mapping sg iterator
- *
- * Iterates over sg entries mapping page-by-page.  On each successful
- * iteration, @miter->page points to the mapped page and
- * @miter->length bytes of data can be accessed at @miter->addr.  As
- * long as an interation is enclosed between start and stop, the user
- * is free to choose control structure and when to stop.
- *
- * @miter->consumed is set to @miter->length on each iteration.  It
- * can be adjusted if the user can't consume all the bytes in one go.
- * Also, a stopped iteration can be resumed by calling next on it.
- * This is useful when iteration needs to release all resources and
- * continue later (e.g. at the next interrupt).
- */
-
-#define SG_MITER_ATOMIC		(1 << 0)	 /* use kmap_atomic */
-#define SG_MITER_TO_SG		(1 << 1)	/* flush back to phys on unmap */
-#define SG_MITER_FROM_SG	(1 << 2)	/* nop */
-
-struct sg_mapping_iter {
-	/* the following three fields can be accessed directly */
-	struct page		*page;		/* currently mapped page */
-	void			*addr;		/* pointer to the mapped area */
-	size_t			length;		/* length of the mapped area */
-	size_t			consumed;	/* number of consumed bytes */
-
-	/* these are internal states, keep away */
-	struct scatterlist	*__sg;		/* current entry */
-	unsigned int		__nents;	/* nr of remaining entries */
-	unsigned int		__offset;	/* offset within sg */
-	unsigned int		__flags;
-};
-
-void sg_miter_start(struct sg_mapping_iter *miter, struct scatterlist *sgl,
-		    unsigned int nents, unsigned int flags);
-bool sg_miter_next(struct sg_mapping_iter *miter);
-void sg_miter_stop(struct sg_mapping_iter *miter);
-
-#endif /* _LINUX_SCATTERLIST_H */