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/*

 * File...........: linux/drivers/s390/block/dasd_diag.h

 * 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>

 * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000

 *

 * $Revision: 1.1.1.1 $

 *

 * History of changes

 *

 */

#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 DEV_CLASS_CKD   0x04

typedef struct diag_bio_t {

        u8 type;

        u8 status;

        u16 spare1;

        u32 block_number;

        u32 alet;

        u32 buffer;

} __attribute__ ((packed, aligned (8)))

    diag_bio_t;

typedef struct diag_init_io_t {

        u16 dev_nr;

        u16 spare1[11];

        u32 block_size;

        u32 offset;

        u32 start_block;

        u32 end_block;

        u32 spare2[6];

} __attribute__ ((packed, aligned (8)))

    diag_init_io_t;

typedef struct diag_rw_io_t {

        u16 dev_nr;

        u16 spare1[11];

        u8 key;

        u8 flags;

        u16 spare2;

        u32 block_count;

        u32 alet;

        u32 bio_list;

        u32 interrupt_params;

        u32 spare3[5];

} __attribute__ ((packed, aligned (8)))

    diag_rw_io_t;

int dasd_diag_init (void);

void dasd_diag_cleanup (void);