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git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - include/asm-generic/scatterlist.h
1 #ifndef __ASM_GENERIC_SCATTERLIST_H
2 #define __ASM_GENERIC_SCATTERLIST_H
4 #include <linux/types.h>
8 unsigned long sg_magic
;
10 unsigned long page_link
;
13 dma_addr_t dma_address
;
14 #ifdef CONFIG_NEED_SG_DMA_LENGTH
15 unsigned int dma_length
;
20 * These macros should be used after a dma_map_sg call has been done
21 * to get bus addresses of each of the SG entries and their lengths.
22 * You should only work with the number of sg entries pci_map_sg
23 * returns, or alternatively stop on the first sg_dma_len(sg) which
26 #define sg_dma_address(sg) ((sg)->dma_address)
28 #ifdef CONFIG_NEED_SG_DMA_LENGTH
29 #define sg_dma_len(sg) ((sg)->dma_length)
31 #define sg_dma_len(sg) ((sg)->length)
34 #endif /* __ASM_GENERIC_SCATTERLIST_H */