unsigned int offset;
unsigned int length;
dma_addr_t dma_address;
+#ifdef CONFIG_NEED_SG_DMA_LENGTH
unsigned int dma_length;
+#endif
};
/*
* is 0.
*/
#define sg_dma_address(sg) ((sg)->dma_address)
-#ifndef sg_dma_len
-/*
- * Normally, you have an iommu on 64 bit machines, but not on 32 bit
- * machines. Architectures that are differnt should override this.
- */
-#if __BITS_PER_LONG == 64
+
+#ifdef CONFIG_NEED_SG_DMA_LENGTH
#define sg_dma_len(sg) ((sg)->dma_length)
#else
#define sg_dma_len(sg) ((sg)->length)
-#endif /* 64 bit */
-#endif /* sg_dma_len */
-
-#ifndef ISA_DMA_THRESHOLD
-#define ISA_DMA_THRESHOLD (~0UL)
#endif
-#define ARCH_HAS_SG_CHAIN
-
#endif /* __ASM_GENERIC_SCATTERLIST_H */