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#ifndef _ASM_IRQ_H

#define _ASM_IRQ_H

#include <linux/config.h>

#ifdef __KERNEL__

#include <asm/hardirq.h>

/*

 * How many IRQ's for S390 ?!?

 */

#define __MAX_SUBCHANNELS 65536

#define NR_IRQS           __MAX_SUBCHANNELS

#define NR_CHPIDS 256

#define LPM_ANYPATH 0xff /* doesn't really belong here, Ingo? */

#define INVALID_STORAGE_AREA ((void *)(-1 - 0x3FFF ))

/*

 * path management control word

 */

typedef struct {

      __u32 intparm;      /* interruption parameter */

      __u32 qf   : 1;     /* qdio facility */

      __u32 res0 : 1;     /* reserved zeros */

      __u32 isc  : 3;     /* interruption sublass */

      __u32 res5 : 3;     /* reserved zeros */

      __u32 ena  : 1;     /* enabled */

      __u32 lm   : 2;     /* limit mode */

      __u32 mme  : 2;     /* measurement-mode enable */

      __u32 mp   : 1;     /* multipath mode */

      __u32 tf   : 1;     /* timing facility */

      __u32 dnv  : 1;     /* device number valid */

      __u32 dev  : 16;    /* device number */

      __u8  lpm;          /* logical path mask */

      __u8  pnom;         /* path not operational mask */

      __u8  lpum;         /* last path used mask */

      __u8  pim;          /* path installed mask */

      __u16 mbi;          /* measurement-block index */

      __u8  pom;          /* path operational mask */

      __u8  pam;          /* path available mask */

      __u8  chpid[8];     /* CHPID 0-7 (if available) */

      __u32 unused1 : 8;  /* reserved zeros */

      __u32 st      : 3;  /* subchannel type */

      __u32 unused2 : 20; /* reserved zeros */

      __u32 csense  : 1;  /* concurrent sense; can be enabled ...*/

                          /*  ... per MSCH, however, if facility */

                          /*  ... is not installed, this results */

                          /*  ... in an operand exception.       */

   } __attribute__ ((packed)) pmcw_t;

#endif /* __KERNEL__ */

/*

 * subchannel status word

 */

typedef struct {

      __u32 key  : 4; /* subchannel key */

      __u32 sctl : 1; /* suspend control */

      __u32 eswf : 1; /* ESW format */

      __u32 cc   : 2; /* deferred condition code */

      __u32 fmt  : 1; /* format */

      __u32 pfch : 1; /* prefetch */

      __u32 isic : 1; /* initial-status interruption control */

      __u32 alcc : 1; /* address-limit checking control */

      __u32 ssi  : 1; /* supress-suspended interruption */

      __u32 zcc  : 1; /* zero condition code */

      __u32 ectl : 1; /* extended control */

      __u32 pno  : 1;     /* path not operational */

      __u32 res  : 1;     /* reserved */

      __u32 fctl : 3;     /* function control */

      __u32 actl : 7;     /* activity control */

      __u32 stctl : 5;    /* status control */

      __u32 cpa;          /* channel program address */

      __u32 dstat : 8;    /* device status */

      __u32 cstat : 8;    /* subchannel status */

      __u32 count : 16;   /* residual count */

   } __attribute__ ((packed)) scsw_t;

#define SCSW_FCTL_CLEAR_FUNC     0x1

#define SCSW_FCTL_HALT_FUNC      0x2

#define SCSW_FCTL_START_FUNC     0x4

#define SCSW_ACTL_SUSPENDED      0x1

#define SCSW_ACTL_DEVACT         0x2

#define SCSW_ACTL_SCHACT         0x4

#define SCSW_ACTL_CLEAR_PEND     0x8

#define SCSW_ACTL_HALT_PEND      0x10

#define SCSW_ACTL_START_PEND     0x20

#define SCSW_ACTL_RESUME_PEND    0x40

#define SCSW_STCTL_STATUS_PEND   0x1

#define SCSW_STCTL_SEC_STATUS    0x2

#define SCSW_STCTL_PRIM_STATUS   0x4

#define SCSW_STCTL_INTER_STATUS  0x8

#define SCSW_STCTL_ALERT_STATUS  0x10

#define DEV_STAT_ATTENTION       0x80

#define DEV_STAT_STAT_MOD        0x40

#define DEV_STAT_CU_END          0x20

#define DEV_STAT_BUSY            0x10

#define DEV_STAT_CHN_END         0x08

#define DEV_STAT_DEV_END         0x04

#define DEV_STAT_UNIT_CHECK      0x02

#define DEV_STAT_UNIT_EXCEP      0x01

#define SCHN_STAT_PCI            0x80

#define SCHN_STAT_INCORR_LEN     0x40

#define SCHN_STAT_PROG_CHECK     0x20

#define SCHN_STAT_PROT_CHECK     0x10

#define SCHN_STAT_CHN_DATA_CHK   0x08

#define SCHN_STAT_CHN_CTRL_CHK   0x04

#define SCHN_STAT_INTF_CTRL_CHK  0x02

#define SCHN_STAT_CHAIN_CHECK    0x01

/*

 * architectured values for first sense byte

 */

#define SNS0_CMD_REJECT         0x80

#define SNS_CMD_REJECT          SNS0_CMD_REJECT

#define SNS0_INTERVENTION_REQ   0x40

#define SNS0_BUS_OUT_CHECK      0x20

#define SNS0_EQUIPMENT_CHECK    0x10

#define SNS0_DATA_CHECK         0x08

#define SNS0_OVERRUN            0x04

/*                              0x02 reserved */

#define SNS0_INCOMPL_DOMAIN     0x01

/*

 * architectured values for second sense byte

 */

#define SNS1_PERM_ERR           0x80

#define SNS1_INV_TRACK_FORMAT   0x40

#define SNS1_EOC                0x20

#define SNS1_MESSAGE_TO_OPER    0x10

#define SNS1_NO_REC_FOUND       0x08

#define SNS1_FILE_PROTECTED     0x04

#define SNS1_WRITE_INHIBITED    0x02

#define SNS1_INPRECISE_END      0x01

/*

 * architectured values for third sense byte

 */

#define SNS2_REQ_INH_WRITE      0x80

#define SNS2_CORRECTABLE        0x40

#define SNS2_FIRST_LOG_ERR      0x20

#define SNS2_ENV_DATA_PRESENT   0x10

/*                              0x08 reserved */

#define SNS2_INPRECISE_END      0x04

/*                              0x02 reserved */

/*                              0x01 reserved */

#ifdef __KERNEL__

/*

 * subchannel information block

 */

typedef struct {

      pmcw_t pmcw;             /* path management control word */

      scsw_t scsw;             /* subchannel status word */

      __u8 mda[12];            /* model dependent area */

   } __attribute__ ((packed,aligned(4))) schib_t;

#endif /* __KERNEL__ */

typedef struct {

      __u8  cmd_code;/* command code */

      __u8  flags;   /* flags, like IDA adressing, etc. */

      __u16 count;   /* byte count */

      __u32 cda;     /* data address */

   } __attribute__ ((packed,aligned(8))) ccw1_t;

#define CCW_FLAG_DC             0x80

#define CCW_FLAG_CC             0x40

#define CCW_FLAG_SLI            0x20

#define CCW_FLAG_SKIP           0x10

#define CCW_FLAG_PCI            0x08

#define CCW_FLAG_IDA            0x04

#define CCW_FLAG_SUSPEND        0x02

#define CCW_CMD_READ_IPL        0x02

#define CCW_CMD_NOOP            0x03

#define CCW_CMD_BASIC_SENSE     0x04

#define CCW_CMD_TIC             0x08

#define CCW_CMD_SENSE_PGID      0x34

#define CCW_CMD_SUSPEND_RECONN  0x5B

#define CCW_CMD_RDC             0x64

#define CCW_CMD_SET_PGID        0xAF

#define CCW_CMD_SENSE_ID        0xE4

#define CCW_CMD_DCTL            0xF3

#ifdef __KERNEL__

#define SENSE_MAX_COUNT         0x20

/*

 * architectured values for first sense byte

 */

#define SNS0_CMD_REJECT         0x80

#define SNS_CMD_REJECT          SNS0_CMD_REJECT

#define SNS0_INTERVENTION_REQ   0x40

#define SNS0_BUS_OUT_CHECK      0x20

#define SNS0_EQUIPMENT_CHECK    0x10

#define SNS0_DATA_CHECK         0x08

#define SNS0_OVERRUN            0x04

/*

 * operation request block

 */

typedef struct {

      __u32 intparm;  /* interruption parameter */

      __u32 key  : 4; /* flags, like key, suspend control, etc. */

      __u32 spnd : 1; /* suspend control */

      __u32 res1 : 1; /* reserved */

      __u32 mod  : 1; /* modification control */

      __u32 sync : 1; /* synchronize control */

      __u32 fmt  : 1; /* format control */

      __u32 pfch : 1; /* prefetch control */

      __u32 isic : 1; /* initial-status-interruption control */

      __u32 alcc : 1; /* address-limit-checking control */

      __u32 ssic : 1; /* suppress-suspended-interr. control */

      __u32 res2 : 1; /* reserved */

      __u32 c64  : 1; /* IDAW/QDIO 64 bit control  */

      __u32 i2k  : 1; /* IDAW 2/4kB block size control */

      __u32 lpm  : 8; /* logical path mask */

      __u32 ils  : 1; /* incorrect length */

      __u32 zero : 6; /* reserved zeros */

      __u32 orbx : 1; /* ORB extension control */

      __u32 cpa;      /* channel program address */

   }  __attribute__ ((packed,aligned(4))) orb_t;

#endif /* __KERNEL__ */

typedef struct {

      __u32 res0  : 4;  /* reserved */

      __u32 pvrf  : 1;  /* path-verification-required flag */

      __u32 cpt   : 1;  /* channel-path timeout */

      __u32 fsavf : 1;  /* Failing storage address validity flag */

      __u32 cons  : 1;  /* concurrent-sense */

      __u32 res8  : 2;  /* reserved */

      __u32 scnt  : 6;  /* sense count if cons == 1 */

      __u32 res16 : 16; /* reserved */

   } __attribute__ ((packed)) erw_t;

/*

 * subchannel logout area

 */

typedef struct {

      __u32 res0  : 1;  /* reserved */

      __u32 esf   : 7;  /* extended status flags */

      __u32 lpum  : 8;  /* last path used mask */

      __u32 res16 : 1;  /* reserved */

      __u32 fvf   : 5;  /* field-validity flags */

      __u32 sacc  : 2;  /* storage access code */

      __u32 termc : 2;  /* termination code */

      __u32 devsc : 1;  /* device-status check */

      __u32 serr  : 1;  /* secondary error */

      __u32 ioerr : 1;  /* i/o-error alert */

      __u32 seqc  : 3;  /* sequence code */

   } __attribute__ ((packed)) sublog_t ;

/*

 * Format 0 Extended Status Word (ESW)

 */

typedef struct {

      sublog_t sublog;    /* subchannel logout */

      erw_t    erw;       /* extended report word */

      __u32    faddr;     /* failing address */

      __u32    zeros[2];  /* 2 fullwords of zeros */

   } __attribute__ ((packed)) esw0_t;

/*

 * Format 1 Extended Status Word (ESW)

 */

typedef struct {

      __u8  zero0;    /* reserved zeros */

      __u8  lpum;     /* last path used mask */

      __u16 zero16;   /* reserved zeros */

      erw_t erw;      /* extended report word */

      __u32 zeros[3]; /* 2 fullwords of zeros */

   } __attribute__ ((packed)) esw1_t;

/*

 * Format 2 Extended Status Word (ESW)

 */

typedef struct {

      __u8  zero0;    /* reserved zeros */

      __u8  lpum;     /* last path used mask */

      __u16 dcti;     /* device-connect-time interval */

      erw_t erw;      /* extended report word */

      __u32 zeros[3]; /* 2 fullwords of zeros */

   } __attribute__ ((packed)) esw2_t;

/*

 * Format 3 Extended Status Word (ESW)

 */

typedef struct {

      __u8  zero0;    /* reserved zeros */

      __u8  lpum;     /* last path used mask */

      __u16 res;      /* reserved */

      erw_t erw;      /* extended report word */

      __u32 zeros[3]; /* 2 fullwords of zeros */

   } __attribute__ ((packed)) esw3_t;

typedef union {

      esw0_t esw0;

      esw1_t esw1;

      esw2_t esw2;

      esw3_t esw3;

   } __attribute__ ((packed)) esw_t;

/*

 * interruption response block

 */

typedef struct {

      scsw_t scsw;             /* subchannel status word */

      esw_t  esw;              /* extended status word */

      __u8   ecw[32];          /* extended control word */

   } __attribute__ ((packed,aligned(4))) irb_t;

#ifdef __KERNEL__

/*

 * TPI info structure

 */

typedef struct {

        __u32 reserved1  : 16;   /* reserved 0x00000001 */

        __u32 irq        : 16;   /* aka. subchannel number */

        __u32 intparm;           /* interruption parameter */

        __u32 adapter_IO : 1;

        __u32 reserved2  : 1;

        __u32 isc        : 3;

        __u32 reserved3  : 12;

        __u32 int_type   : 3;

        __u32 reserved4  : 12;

   } __attribute__ ((packed)) tpi_info_t;

//

// command information word  (CIW) layout

//

typedef struct _ciw {

   __u32        et       :  2; // entry type

   __u32        reserved :  2; // reserved

   __u32        ct       :  4; // command type

   __u32        cmd      :  8; // command

   __u32        count    : 16; // count

   } __attribute__ ((packed)) ciw_t;

#define CIW_TYPE_RCD    0x0    // read configuration data

#define CIW_TYPE_SII    0x1    // set interface identifier

#define CIW_TYPE_RNI    0x2    // read node identifier

#define MAX_CIWS 8

//

// sense-id response buffer layout

//

typedef struct {

  /* common part */

      __u8           reserved;     /* always 0x'FF' */

      __u16          cu_type;      /* control unit type */

      __u8           cu_model;     /* control unit model */

      __u16          dev_type;     /* device type */

      __u8           dev_model;    /* device model */

      __u8           unused;       /* padding byte */

  /* extended part */

      ciw_t    ciw[MAX_CIWS];      /* variable # of CIWs */

   }  __attribute__ ((packed,aligned(4))) senseid_t;

/*

 * where we put the ssd info

 */

typedef struct _ssd_info {

        __u8   valid:1;

        __u8   type:7;          /* subchannel type */

        __u8   chpid[8];        /* chpids */

        __u16  fla[8];          /* full link addresses */

} __attribute__ ((packed)) ssd_info_t;

/*

 * area for store event information

 */

typedef struct chsc_area_t {

        struct {

                /* word 0 */

                __u16 command_code1;

                __u16 command_code2;

                union {

                        struct {

                                /* word 1 */

                                __u32 reserved1;

                                /* word 2 */

                                __u32 reserved2;

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

                        struct {

                                /* word 1 */

                                __u16 reserved1;

                                __u16 f_sch;     /* first subchannel */

                                /* word 2 */

                                __u16 reserved2;

                                __u16 l_sch;    /* last subchannel */

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

                } request_block_data;

                /* word 3 */

                __u32 reserved3;

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

        struct {

                /* word 0 */

                __u16 length;

                __u16 response_code;

                /* word 1 */

                __u32 reserved1;

                union {

                        struct {

                                /* word 2 */

                                __u8  flags;

                                __u8  vf;         /* validity flags */

                                __u8  rs;         /* reporting source */

                                __u8  cc;         /* content code */

                                /* word 3 */

                                __u16 fla;        /* full link address */

                                __u16 rsid;       /* reporting source id */

                                /* word 4 */

                                __u32 reserved2;

                                /* word 5 */

                                __u32 reserved3;

                                /* word 6-102 */

                                __u32 ccdf[96];   /* content-code dependent field */

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

                        struct {

                                /* word 2 */

                                __u8 sch_valid : 1;

                                __u8 dev_valid : 1;

                                __u8 st        : 3; /* subchannel type */

                                __u8 zeroes    : 3;

                                __u8  unit_addr;  /* unit address */

                                __u16 devno;      /* device number */

                                /* word 3 */

                                __u8 path_mask;

                                __u8 fla_valid_mask;

                                __u16 sch;        /* subchannel */

                                /* words 4-5 */

                                __u8 chpid[8];    /* chpids 0-7 */

                                /* words 6-9 */

                                __u16 fla[8];     /* full link addresses 0-7 */

                                /* words 10-102 */

                                __u32 padding[92];

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

                } response_block_data;

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

} __attribute__ ((packed,aligned(PAGE_SIZE))) chsc_area_t;

#endif /* __KERNEL__ */

/*

 * sense data

 */

typedef struct {

      __u8          res[32];   /* reserved   */

      __u8          data[32];  /* sense data */

   } __attribute__ ((packed)) sense_t;

/*

 * device status area, to be provided by the device driver

 *  when calling request_irq() as parameter "dev_id", later

 *  tied to the "action" control block.

 *

 * Note : No data area must be added after union ii or the

 *         effective devstat size calculation will fail !

 */

typedef struct {

     __u16         devno;    /* device number, aka. "cuu" from irb */

     unsigned long intparm;  /* interrupt parameter */

     __u8          cstat;    /* channel status - accumulated */

     __u8          dstat;    /* device status - accumulated */

     __u8          lpum;     /* last path used mask from irb */

     __u8          unused;   /* not used - reserved */

     unsigned int  flag;     /* flag : see below */

     __u32         cpa;      /* CCW address from irb at primary status */

     __u32         rescnt;   /* res. count from irb at primary status */

     __u32         scnt;     /* sense count, if DEVSTAT_FLAG_SENSE_AVAIL */

     union {

        irb_t   irb;         /* interruption response block */

        sense_t sense;       /* sense information */

        } ii;                /* interrupt information */

  } devstat_t;

#define DEVSTAT_FLAG_SENSE_AVAIL   0x00000001

#define DEVSTAT_NOT_OPER           0x00000002

#define DEVSTAT_START_FUNCTION     0x00000004

#define DEVSTAT_HALT_FUNCTION      0x00000008

#define DEVSTAT_STATUS_PENDING     0x00000010

#define DEVSTAT_REVALIDATE         0x00000020

#define DEVSTAT_DEVICE_GONE        0x00000040

#define DEVSTAT_DEVICE_OWNED       0x00000080

#define DEVSTAT_CLEAR_FUNCTION     0x00000100

#define DEVSTAT_PCI                0x00000200

#define DEVSTAT_SUSPENDED          0x00000400

#define DEVSTAT_UNKNOWN_DEV        0x00000800

#define DEVSTAT_UNFRIENDLY_DEV     0x00001000

#define DEVSTAT_NOT_ACC            0x00002000

#define DEVSTAT_NOT_ACC_ERR        0x00004000

#define DEVSTAT_FINAL_STATUS       0x80000000

#define DEVINFO_NOT_OPER           DEVSTAT_NOT_OPER

#define DEVINFO_UNKNOWN_DEV        DEVSTAT_UNKNOWN_DEV

#define DEVINFO_DEVICE_OWNED       DEVSTAT_DEVICE_OWNED

#define DEVINFO_QDIO_CAPABLE       0x40000000

#define DEVINFO_UNFRIENDLY_DEV     DEVSTAT_UNFRIENDLY_DEV

#define INTPARM_STATUS_PENDING     0xFFFFFFFF

#ifdef __KERNEL__

#define IO_INTERRUPT_TYPE          0 /* I/O interrupt type */

typedef  void (* io_handler_func1_t) ( int             irq,

                                       devstat_t      *devstat,

                                       struct pt_regs *rgs);

typedef  void (* io_handler_func_t) ( int             irq,

                                      void           *devstat,

                                      struct pt_regs *rgs);

typedef  void ( * not_oper_handler_func_t)( int irq,

                                            int status );

typedef  int  (* adapter_int_handler_t)( __u32 intparm );

typedef struct {

        io_handler_func_t         handler;  /* interrupt handler routine */

        const char               *name;     /* device name */

        devstat_t                *dev_id;   /* device status block */

   } irq_desc_t;

typedef struct {

        __u8  state1    :  2;   /* path state value 1 */

        __u8  state2    :  2;   /* path state value 2 */

        __u8  state3    :  1;   /* path state value 3 */

        __u8  resvd     :  3;   /* reserved */

        } __attribute__ ((packed)) path_state_t;

typedef struct {

   union {

                __u8         fc;   /* SPID function code */

                path_state_t ps;   /* SNID path state */

        } inf;

        __u32 cpu_addr  : 16;   /* CPU address */

        __u32 cpu_id    : 24;   /* CPU identification */

        __u32 cpu_model : 16;   /* CPU model */

        __u32 tod_high;         /* high word TOD clock */

        } __attribute__ ((packed)) pgid_t;

#define SPID_FUNC_SINGLE_PATH      0x00

#define SPID_FUNC_MULTI_PATH       0x80

#define SPID_FUNC_ESTABLISH        0x00

#define SPID_FUNC_RESIGN           0x40

#define SPID_FUNC_DISBAND          0x20

#define SNID_STATE1_RESET          0

#define SNID_STATE1_UNGROUPED      2

#define SNID_STATE1_GROUPED        3

#define SNID_STATE2_NOT_RESVD      0

#define SNID_STATE2_RESVD_ELSE     2

#define SNID_STATE2_RESVD_SELF     3

#define SNID_STATE3_MULTI_PATH     1

#define SNID_STATE3_SINGLE_PATH    0

/*

 * Flags used as input parameters for do_IO()

 */

#define DOIO_EARLY_NOTIFICATION  0x0001 /* allow for I/O completion ... */

                                        /* ... notification after ... */

                                        /* ... primary interrupt status */

#define DOIO_RETURN_CHAN_END     DOIO_EARLY_NOTIFICATION

#define DOIO_VALID_LPM           0x0002 /* LPM input parameter is valid */

#define DOIO_WAIT_FOR_INTERRUPT  0x0004 /* wait synchronously for interrupt */

#define DOIO_REPORT_ALL          0x0008 /* report all interrupt conditions */

#define DOIO_ALLOW_SUSPEND       0x0010 /* allow for channel prog. suspend */

#define DOIO_DENY_PREFETCH       0x0020 /* don't allow for CCW prefetch */

#define DOIO_SUPPRESS_INTER      0x0040 /* suppress intermediate inter. */

                                        /* ... for suspended CCWs */

#define DOIO_TIMEOUT             0x0080 /* 3 secs. timeout for sync. I/O */

#define DOIO_DONT_CALL_INTHDLR   0x0100 /* don't call interrupt handler */

#define DOIO_USE_DIAG98          0x0400 /* use DIAG98 instead of SSCH */

/*

 * do_IO()

 *

 *  Start a S/390 channel program. When the interrupt arrives, the

 *  IRQ handler is called, either immediately, delayed (dev-end missing,

 *  or sense required) or never (no IRQ handler registered -

 *  should never occur, as the IRQ (subchannel ID) should be

 *  disabled if no handler is present. Depending on the action

 *  taken, do_IO() returns :  0      - Success

 *                           -EIO    - Status pending

 *                                        see : action->dev_id->cstat

 *                                              action->dev_id->dstat

 *                           -EBUSY  - Device busy

 *                           -ENODEV - Device not operational

 */

int do_IO( int            irq,          /* IRQ aka. subchannel number */

           ccw1_t        *cpa,          /* logical channel program address */

           unsigned long  intparm,      /* interruption parameter */

           __u8           lpm,          /* logical path mask */

           unsigned long  flag);        /* flags : see above */

int start_IO( int           irq,       /* IRQ aka. subchannel number */

              ccw1_t       *cpa,       /* logical channel program address */

              unsigned long  intparm,   /* interruption parameter */

              __u8          lpm,       /* logical path mask */

              unsigned int  flag);     /* flags : see above */

void do_crw_pending( void  );            /* CRW handler */

int resume_IO( int irq);               /* IRQ aka. subchannel number */

int halt_IO( int           irq,         /* IRQ aka. subchannel number */

             unsigned long intparm,     /* dummy intparm */

             unsigned long flag);       /* possible DOIO_WAIT_FOR_INTERRUPT */

int clear_IO( int           irq,         /* IRQ aka. subchannel number */

              unsigned long intparm,     /* dummy intparm */

              unsigned long flag);       /* possible DOIO_WAIT_FOR_INTERRUPT */

int process_IRQ( struct pt_regs regs,

                 unsigned int   irq,

                 unsigned int   intparm);

int enable_cpu_sync_isc ( int irq );

int disable_cpu_sync_isc( int irq );

typedef struct {

     int          irq;                  /* irq, aka. subchannel */

     __u16        devno;                /* device number */

     unsigned int status;               /* device status */

     senseid_t    sid_data;             /* senseID data */

     } s390_dev_info_t;

int get_dev_info( int irq, s390_dev_info_t *);   /* to be eliminated - don't use */

int get_dev_info_by_irq  ( int irq, s390_dev_info_t *pdi);

int get_dev_info_by_devno( __u16 devno, s390_dev_info_t *pdi);

int          get_irq_by_devno( __u16 devno );

unsigned int get_devno_by_irq( int irq );

int get_irq_first( void );

int get_irq_next ( int irq );

int read_dev_chars( int irq, void **buffer, int length );

int read_conf_data( int irq, void **buffer, int *length, __u8 lpm );

int  s390_DevicePathVerification( int irq, __u8 domask );

int s390_trigger_resense(int irq);

int s390_request_irq_special( int                      irq,

                              io_handler_func_t        io_handler,

                              not_oper_handler_func_t  not_oper_handler,

                              unsigned long            irqflags,

                              const char              *devname,

                              void                    *dev_id);

extern int set_cons_dev(int irq);

extern int wait_cons_dev(int irq);

extern schib_t *s390_get_schib( int irq );

extern int s390_register_adapter_interrupt(adapter_int_handler_t handler);

extern int s390_unregister_adapter_interrupt(adapter_int_handler_t handler);

/*

 * Some S390 specific IO instructions as inline

 */

extern __inline__ int stsch(int irq, volatile schib_t *addr)

{

        int ccode;

        __asm__ __volatile__(

                "   lr    1,%1\n"

                "   stsch 0(%2)\n"

                "   ipm   %0\n"

                "   srl   %0,28"

                : "=d" (ccode)

                : "d" (irq | 0x10000), "a" (addr)

                : "cc", "1" );

        return ccode;

}

extern __inline__ int msch(int irq, volatile schib_t *addr)

{

        int ccode;

        __asm__ __volatile__(

                "   lr    1,%1\n"

                "   msch  0(%2)\n"

                "   ipm   %0\n"

                "   srl   %0,28"

                : "=d" (ccode)

                : "d" (irq | 0x10000L), "a" (addr)

                : "cc", "1" );

        return ccode;

}

extern __inline__ int msch_err(int irq, volatile schib_t *addr)

{

        int ccode;

        __asm__ __volatile__(

                "    lr   1,%1\n"

                "    msch 0(%2)\n"

                "0:  ipm  %0\n"

                "    srl  %0,28\n"

                "1:\n"

#ifdef CONFIG_ARCH_S390X

                ".section .fixup,\"ax\"\n"

                "2:  l    %0,%3\n"

                "    jg   1b\n"

                ".previous\n"

                ".section __ex_table,\"a\"\n"

                "   .align 8\n"

                "   .quad 0b,2b\n"

                ".previous"