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/*

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

 * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>

 *                  Horst Hummel <Horst.Hummel@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

 *

 */

#ifndef DASD_ECKD_H

#define DASD_ECKD_H

#include "dasd_3990_erp.h"

#include "dasd_9343_erp.h"

/*******************************************************************************

 * SECTION: CCW Definitions

 ******************************************************************************/

#define DASD_ECKD_CCW_WRITE              0x05

#define DASD_ECKD_CCW_READ               0x06

#define DASD_ECKD_CCW_WRITE_HOME_ADDRESS 0x09

#define DASD_ECKD_CCW_READ_HOME_ADDRESS  0x0a

#define DASD_ECKD_CCW_WRITE_KD           0x0d

#define DASD_ECKD_CCW_READ_KD            0x0e

#define DASD_ECKD_CCW_ERASE              0x11

#define DASD_ECKD_CCW_READ_COUNT         0x12

#define DASD_ECKD_CCW_SLCK               0x14

#define DASD_ECKD_CCW_WRITE_RECORD_ZERO  0x15

#define DASD_ECKD_CCW_READ_RECORD_ZERO   0x16

#define DASD_ECKD_CCW_WRITE_CKD          0x1d

#define DASD_ECKD_CCW_READ_CKD           0x1e

#define DASD_ECKD_CCW_PSF                0x27

#define DASD_ECKD_CCW_RSSD               0x3e

#define DASD_ECKD_CCW_LOCATE_RECORD      0x47

#define DASD_ECKD_CCW_DEFINE_EXTENT      0x63

#define DASD_ECKD_CCW_WRITE_MT           0x85

#define DASD_ECKD_CCW_READ_MT            0x86

#define DASD_ECKD_CCW_WRITE_KD_MT        0x8d

#define DASD_ECKD_CCW_READ_KD_MT         0x8e

#define DASD_ECKD_CCW_RELEASE            0x94

#define DASD_ECKD_CCW_READ_CKD_MT        0x9e

#define DASD_ECKD_CCW_WRITE_CKD_MT       0x9d

#define DASD_ECKD_CCW_RESERVE            0xB4

/*

 *Perform Subsystem Function / Sub-Orders

 */

#define PSF_ORDER_PRSSD                  0x18

/*******************************************************************************

 * SECTION: Type Definitions

 ******************************************************************************/

typedef struct eckd_count_t {

        __u16 cyl;

        __u16 head;

        __u8 record;

        __u8 kl;

        __u16 dl;

} __attribute__ ((packed)) eckd_count_t;

typedef struct ch_t {

        __u16 cyl;

        __u16 head;

} __attribute__ ((packed)) ch_t;

typedef struct chs_t {

        __u16 cyl;

        __u16 head;

        __u32 sector;

} __attribute__ ((packed)) chs_t;

typedef struct chr_t {

        __u16 cyl;

        __u16 head;

        __u8 record;

} __attribute__ ((packed)) chr_t;

typedef struct geom_t {

        __u16 cyl;

        __u16 head;

        __u32 sector;

} __attribute__ ((packed)) geom_t;

typedef struct eckd_home_t {

        __u8 skip_control[14];

        __u16 cell_number;

        __u8 physical_addr[3];

        __u8 flag;

        ch_t track_addr;

        __u8 reserved;

        __u8 key_length;

        __u8 reserved2[2];

} __attribute__ ((packed)) eckd_home_t;

typedef struct DE_eckd_data_t {

        struct {

                unsigned char perm:2;   /* Permissions on this extent */

                unsigned char reserved:1;

                unsigned char seek:2;   /* Seek control */

                unsigned char auth:2;   /* Access authorization */

                unsigned char pci:1;    /* PCI Fetch mode */

        } __attribute__ ((packed)) mask;

        struct {

                unsigned char mode:2;   /* Architecture mode */

                unsigned char ckd:1;    /* CKD Conversion */

                unsigned char operation:3;      /* Operation mode */

                unsigned char cfw:1;    /* Cache fast write */

                unsigned char dfw:1;    /* DASD fast write */

        } __attribute__ ((packed)) attributes;

        __u16 blk_size;         /* Blocksize */

        __u16 fast_write_id;

        __u8 ga_additional;     /* Global Attributes Additional */

        __u8 ga_extended;       /* Global Attributes Extended   */

        ch_t beg_ext;

        ch_t end_ext;

        unsigned long long ep_sys_time; /* Extended Parameter - System Time Stamp */

        __u8 ep_format;        /* Extended Parameter format byte       */

        __u8 ep_prio;          /* Extended Parameter priority I/O byte */

        __u8 ep_reserved[6];   /* Extended Parameter Reserved          */

} __attribute__ ((packed)) DE_eckd_data_t;

typedef struct LO_eckd_data_t {

        struct {

                unsigned char orientation:2;

                unsigned char operation:6;

        } __attribute__ ((packed)) operation;

        struct {

                unsigned char last_bytes_used:1;

                unsigned char reserved:6;

                unsigned char read_count_suffix:1;

        } __attribute__ ((packed)) auxiliary;

        __u8 unused;

        __u8 count;

        ch_t seek_addr;

        chr_t search_arg;

        __u8 sector;

        __u16 length;

} __attribute__ ((packed)) LO_eckd_data_t;

typedef struct dasd_eckd_characteristics_t {

        __u16 cu_type;

        struct {

                unsigned char support:2;

                unsigned char async:1;

                unsigned char reserved:1;

                unsigned char cache_info:1;

                unsigned char model:3;

        } __attribute__ ((packed)) cu_model;

        __u16 dev_type;

        __u8 dev_model;

        struct {

                unsigned char mult_burst:1;

                unsigned char RT_in_LR:1;

                unsigned char reserved1:1;

                unsigned char RD_IN_LR:1;

                unsigned char reserved2:4;

                unsigned char reserved3:8;

                unsigned char defect_wr:1;

                unsigned char XRC_supported:1;

                unsigned char reserved4:1;

                unsigned char striping:1;

                unsigned char reserved5:4;

                unsigned char cfw:1;

                unsigned char reserved6:2;

                unsigned char cache:1;

                unsigned char dual_copy:1;

                unsigned char dfw:1;

                unsigned char reset_alleg:1;

                unsigned char sense_down:1;

        } __attribute__ ((packed)) facilities;

        __u8 dev_class;

        __u8 unit_type;

        __u16 no_cyl;

        __u16 trk_per_cyl;

        __u8 sec_per_trk;

        __u8 byte_per_track[3];

        __u16 home_bytes;

        __u8 formula;

        union {

                struct {

                        __u8 f1;

                        __u16 f2;

                        __u16 f3;

                } __attribute__ ((packed)) f_0x01;

                struct {

                        __u8 f1;

                        __u8 f2;

                        __u8 f3;

                        __u8 f4;

                        __u8 f5;

                } __attribute__ ((packed)) f_0x02;

        } __attribute__ ((packed)) factors;

        __u16 first_alt_trk;

        __u16 no_alt_trk;

        __u16 first_dia_trk;

        __u16 no_dia_trk;

        __u16 first_sup_trk;

        __u16 no_sup_trk;

        __u8 MDR_ID;

        __u8 OBR_ID;

        __u8 director;

        __u8 rd_trk_set;

        __u16 max_rec_zero;

        __u8 reserved1;

        __u8 RWANY_in_LR;

        __u8 factor6;

        __u8 factor7;

        __u8 factor8;

        __u8 reserved2[3];

        __u8 reserved3[10];

} __attribute__ ((packed)) dasd_eckd_characteristics_t;

typedef struct dasd_eckd_confdata_t {

        struct {

                struct {

                        unsigned char identifier:2;

                        unsigned char token_id:1;

                        unsigned char sno_valid:1;

                        unsigned char subst_sno:1;

                        unsigned char recNED:1;

                        unsigned char emuNED:1;

                        unsigned char reserved:1;

                } __attribute__ ((packed)) flags;

                __u8 descriptor;

                __u8 dev_class;

                __u8 reserved;

                unsigned char dev_type[6];

                unsigned char dev_model[3];

                unsigned char HDA_manufacturer[3];

                unsigned char HDA_location[2];

                unsigned char HDA_seqno[12];

                __u16 ID;

        } __attribute__ ((packed)) ned1;

        struct {

                struct {

                        unsigned char identifier:2;

                        unsigned char token_id:1;

                        unsigned char sno_valid:1;

                        unsigned char subst_sno:1;

                        unsigned char recNED:1;

                        unsigned char emuNED:1;

                        unsigned char reserved:1;

                } __attribute__ ((packed)) flags;

                __u8 descriptor;

                __u8 reserved[2];

                unsigned char dev_type[6];

                unsigned char dev_model[3];

                unsigned char DASD_manufacturer[3];

                unsigned char DASD_location[2];

                unsigned char DASD_seqno[12];

                __u16 ID;

        } __attribute__ ((packed)) ned2;

        struct {

                struct {

                        unsigned char identifier:2;

                        unsigned char token_id:1;

                        unsigned char sno_valid:1;

                        unsigned char subst_sno:1;

                        unsigned char recNED:1;

                        unsigned char emuNED:1;

                        unsigned char reserved:1;

                } __attribute__ ((packed)) flags;

                __u8 descriptor;

                __u8 reserved[2];

                unsigned char cont_type[6];

                unsigned char cont_model[3];

                unsigned char cont_manufacturer[3];

                unsigned char cont_location[2];

                unsigned char cont_seqno[12];

                __u16 ID;

        } __attribute__ ((packed)) ned3;

        struct {

                struct {

                        unsigned char identifier:2;

                        unsigned char token_id:1;

                        unsigned char sno_valid:1;

                        unsigned char subst_sno:1;

                        unsigned char recNED:1;

                        unsigned char emuNED:1;

                        unsigned char reserved:1;

                } __attribute__ ((packed)) flags;

                __u8 descriptor;

                __u8 reserved[2];

                unsigned char cont_type[6];

                unsigned char empty[3];

                unsigned char cont_manufacturer[3];

                unsigned char cont_location[2];

                unsigned char cont_seqno[12];

                __u16 ID;

        } __attribute__ ((packed)) ned4;

        unsigned char ned5[32];

        unsigned char ned6[32];

        unsigned char ned7[32];

        struct {

                struct {

                        unsigned char identifier:2;

                        unsigned char reserved:6;

                } __attribute__ ((packed)) flags;

                __u8 selector;

                __u16 interfaceID;

                __u32 reserved;

                __u16 subsystemID;

                struct {

                        unsigned char sp0:1;

                        unsigned char sp1:1;

                        unsigned char reserved:5;

                        unsigned char scluster:1;

                } __attribute__ ((packed)) spathID;

                __u8 unit_address;

                __u8 dev_ID;

                __u8 dev_address;

                __u8 adapterID;

                __u16 link_address;

                struct {

                        unsigned char parallel:1;

                        unsigned char escon:1;

                        unsigned char reserved:1;

                        unsigned char ficon:1;

                        unsigned char reserved2:4;

                } __attribute__ ((packed)) protocol_type;

                struct {

                        unsigned char PID_in_236:1;

                        unsigned char reserved:7;

                } __attribute__ ((packed)) format_flags;

                __u8 log_dev_address;

                unsigned char reserved2[12];

        } __attribute__ ((packed)) neq;

} __attribute__ ((packed)) dasd_eckd_confdata_t;

/*

 * Perform Subsystem Function - Prepare for Read Subsystem Data

 */

typedef struct dasd_psf_prssd_data_t {

        unsigned char order;

        unsigned char flags;

        unsigned char reserved[4];

        unsigned char suborder;

        unsigned char varies[9];

} __attribute__((packed)) dasd_psf_prssd_data_t;

int dasd_eckd_init (void);

void dasd_eckd_cleanup (void);

#endif                          /* DASD_ECKD_H */