text: /*
   * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
   * Based on.......: linux/drivers/s390/block/mdisk.h
   * ...............: by Hartmunt Penner <hpenner@de.ibm.com>
   * Bugreports.to..: <Linux390@de.ibm.com>
   * Copyright IBM Corp. 1999, 2000
   *
   */
  
  #define MDSK_WRITE_REQ 0x01
  #define MDSK_READ_REQ  0x02
  
  #define INIT_BIO	0x00
  #define RW_BIO		0x01
  #define TERM_BIO	0x02
  
  #define DEV_CLASS_FBA	0x01
  #define DEV_CLASS_ECKD	0x04
  
  #define DASD_DIAG_CODE_31BIT		0x03
  #define DASD_DIAG_CODE_64BIT		0x07
  
  #define DASD_DIAG_RWFLAG_ASYNC		0x02
  #define DASD_DIAG_RWFLAG_NOCACHE	0x01
  
  #define DASD_DIAG_FLAGA_FORMAT_64BIT	0x80
  
  struct dasd_diag_characteristics {
  	u16 dev_nr;
  	u16 rdc_len;
  	u8 vdev_class;
  	u8 vdev_type;
  	u8 vdev_status;
  	u8 vdev_flags;
  	u8 rdev_class;
  	u8 rdev_type;
  	u8 rdev_model;
  	u8 rdev_features;
  } __attribute__ ((packed, aligned(4)));
  
  
  #ifdef CONFIG_64BIT
  #define DASD_DIAG_FLAGA_DEFAULT		DASD_DIAG_FLAGA_FORMAT_64BIT
  
  typedef u64 blocknum_t;
  typedef s64 sblocknum_t;
  
  struct dasd_diag_bio {
  	u8 type;
  	u8 status;
  	u8 spare1[2];
  	u32 alet;
  	blocknum_t block_number;
  	void *buffer;
  } __attribute__ ((packed, aligned(8)));
  
  struct dasd_diag_init_io {
  	u16 dev_nr;
  	u8 flaga;
  	u8 spare1[21];
  	u32 block_size;
  	u8 spare2[4];
  	blocknum_t offset;
  	sblocknum_t start_block;
  	blocknum_t end_block;
  	u8  spare3[8];
  } __attribute__ ((packed, aligned(8)));
  
  struct dasd_diag_rw_io {
  	u16 dev_nr;
  	u8  flaga;
  	u8  spare1[21];
  	u8  key;
  	u8  flags;
  	u8  spare2[2];
  	u32 block_count;
  	u32 alet;
  	u8  spare3[4];
  	u64 interrupt_params;
  	struct dasd_diag_bio *bio_list;
  	u8  spare4[8];
  } __attribute__ ((packed, aligned(8)));
  #else /* CONFIG_64BIT */
  #define DASD_DIAG_FLAGA_DEFAULT		0x0
  
  typedef u32 blocknum_t;
  typedef s32 sblocknum_t;
  
  struct dasd_diag_bio {
  	u8 type;
  	u8 status;
  	u16 spare1;
  	blocknum_t block_number;
  	u32 alet;
  	void *buffer;
  } __attribute__ ((packed, aligned(8)));
  
  struct dasd_diag_init_io {
  	u16 dev_nr;
  	u8 flaga;
  	u8 spare1[21];
  	u32 block_size;
  	blocknum_t offset;
  	sblocknum_t start_block;
  	blocknum_t end_block;
  	u8 spare2[24];
  } __attribute__ ((packed, aligned(8)));
  
  struct dasd_diag_rw_io {
  	u16 dev_nr;
  	u8 flaga;
  	u8 spare1[21];
  	u8 key;
  	u8 flags;
  	u8 spare2[2];
  	u32 block_count;
  	u32 alet;
  	struct dasd_diag_bio *bio_list;
  	u32 interrupt_params;
  	u8 spare3[20];
  } __attribute__ ((packed, aligned(8)));
  #endif /* CONFIG_64BIT */
  