|
@@ -11,45 +11,8 @@
|
|
|
#ifndef _ASM_SCATTERLIST_H
|
|
|
#define _ASM_SCATTERLIST_H
|
|
|
|
|
|
-#include <asm/types.h>
|
|
|
-
|
|
|
-/*
|
|
|
- * Drivers must set either ->address or (preferred) page and ->offset
|
|
|
- * to indicate where data must be transferred to/from.
|
|
|
- *
|
|
|
- * Using page is recommended since it handles highmem data as well as
|
|
|
- * low mem. ->address is restricted to data which has a virtual mapping, and
|
|
|
- * it will go away in the future. Updating to page can be automated very
|
|
|
- * easily -- something like
|
|
|
- *
|
|
|
- * sg->address = some_ptr;
|
|
|
- *
|
|
|
- * can be rewritten as
|
|
|
- *
|
|
|
- * sg_set_page(virt_to_page(some_ptr));
|
|
|
- * sg->offset = (unsigned long) some_ptr & ~PAGE_MASK;
|
|
|
- *
|
|
|
- * and that's it. There's no excuse for not highmem enabling YOUR driver. /jens
|
|
|
- */
|
|
|
-struct scatterlist {
|
|
|
-#ifdef CONFIG_DEBUG_SG
|
|
|
- unsigned long sg_magic;
|
|
|
-#endif
|
|
|
- unsigned long page_link;
|
|
|
- unsigned int offset; /* for highmem, page offset */
|
|
|
- dma_addr_t dma_address;
|
|
|
- unsigned int length;
|
|
|
-};
|
|
|
+#include <asm-generic/scatterlist.h>
|
|
|
|
|
|
#define ISA_DMA_THRESHOLD (0x00ffffff)
|
|
|
|
|
|
-/*
|
|
|
- * These macros should be used after a pci_map_sg call has been done
|
|
|
- * to get bus addresses of each of the SG entries and their lengths.
|
|
|
- * You should only work with the number of sg entries pci_map_sg
|
|
|
- * returns.
|
|
|
- */
|
|
|
-#define sg_dma_address(sg) ((sg)->dma_address)
|
|
|
-#define sg_dma_len(sg) ((sg)->length)
|
|
|
-
|
|
|
#endif /* _ASM_SCATTERLIST_H */
|