drivers/scsi/qla2xxx/qla_dsd.h

   1 #ifndef _QLA_DSD_H_
   2 #define _QLA_DSD_H_
   3
   4 #include <linux/unaligned.h>
   5
   6 /* 32-bit data segment descriptor (8 bytes) */
   7 struct dsd32 {
   8         __le32 address;
   9         __le32 length;
  10 };
  11
  12 static inline void append_dsd32(struct dsd32 **dsd, struct scatterlist *sg)
  13 {
  14         put_unaligned_le32(sg_dma_address(sg), &(*dsd)->address);
  15         put_unaligned_le32(sg_dma_len(sg),     &(*dsd)->length);
  16         (*dsd)++;
  17 }
  18
  19 /* 64-bit data segment descriptor (12 bytes) */
  20 struct dsd64 {
  21         __le64 address;
  22         __le32 length;
  23 } __packed;
  24
  25 static inline void append_dsd64(struct dsd64 **dsd, struct scatterlist *sg)
  26 {
  27         put_unaligned_le64(sg_dma_address(sg), &(*dsd)->address);
  28         put_unaligned_le32(sg_dma_len(sg),     &(*dsd)->length);
  29         (*dsd)++;
  30 }
  31
  32 #endif