/* AM53/79C974 (PCscsi) driver release 0.5
 *
 * The architecture and much of the code of this device
 * driver was originally developed by Drew Eckhardt for
 * the NCR5380. The following copyrights apply:
 *  For the architecture and all parts similar to the NCR5380:
 *    Copyright 1993, Drew Eckhardt
 *	Visionary Computing 
 *	(Unix and Linux consulting and custom programming)
 * 	drew@colorado.edu
 *	+1 (303) 666-5836
 *
 *  The AM53C974_nobios_detect code was originally developed by
 *   Robin Cutshaw (robin@xfree86.org) and is used here in a 
 *   modified form.
 *
 *  For the other parts:
 *    Copyright 1994, D. Frieauff
 *    EMail: fri@rsx42sun0.dofn.de
 *    Phone: x49-7545-8-2256 , x49-7541-42305
 */

/*
 * $Log: AM53C974.h,v $
 */

#ifndef AM53C974_H
#define AM53C974_H

#include <scsi/scsicam.h>

struct AM53C974_hostdata {
    volatile unsigned       in_reset:1;          /* flag, says bus reset pending */
    volatile unsigned       aborted:1;           /* flag, says aborted */
    volatile unsigned       selecting:1;         /* selection started, but not yet finished */
    volatile unsigned       disconnecting: 1;    /* disconnection started, but not yet finished */
    volatile unsigned       dma_busy:1;          /* dma busy when service request for info transfer received */
    volatile unsigned  char msgout[10];          /* message to output in MSGOUT_PHASE */
    volatile unsigned  char last_message[10];	/* last message OUT */
    volatile Scsi_Cmnd      *issue_queue;	/* waiting to be issued */
    volatile Scsi_Cmnd      *disconnected_queue;	/* waiting for reconnect */
    volatile Scsi_Cmnd      *sel_cmd;            /* command for selection */
    volatile Scsi_Cmnd      *connected;		/* currently connected command */
    volatile unsigned  char busy[8];		/* index = target, bit = lun */
    unsigned  char sync_per[8];         /* synchronous transfer period (in effect) */
    unsigned  char sync_off[8];         /* synchronous offset (in effect) */
    unsigned  char sync_neg[8];         /* sync. negotiation performed (in effect) */
    unsigned  char sync_en[8];          /* sync. negotiation performed (in effect) */
    unsigned  char max_rate[8];         /* max. transfer rate (setup) */
    unsigned  char max_offset[8];       /* max. sync. offset (setup), only valid if corresponding sync_en is nonzero */
    };

extern struct proc_dir_entry proc_scsi_am53c974;

#define AM53C974 { \
    NULL,              		/* pointer to next in list                      */  \
    NULL,			/* struct module *module			*/  \
    &proc_scsi_am53c974,        /* struct proc_dir_entry *proc_dir              */ \
    NULL,                       /* int (*proc_info)(char *, char **, off_t, int, int, int); */ \
    "AM53C974",        		/* name                                         */  \
    AM53C974_detect,   		/* int (* detect)(struct SHT *)                 */  \
    AM53C974_release,		/* int (*release)(struct Scsi_Host *)           */  \
    AM53C974_info,     		/* const char *(* info)(struct Scsi_Host *)     */  \
    AM53C974_command,  		/* int (* command)(Scsi_Cmnd *)                 */  \
    AM53C974_queue_command,	/* int (* queuecommand)(Scsi_Cmnd *,                \
                                           void (*done)(Scsi_Cmnd *))           */  \
    AM53C974_abort,    		/* int (* abort)(Scsi_Cmnd *)                   */  \
    AM53C974_reset,    		/* int (* reset)(Scsi_Cmnd *)                   */  \
    NULL,                 	/* int (* slave_attach)(int, int)               */  \
    scsicam_bios_param,		/* int (* bios_param)(Disk *, int, int[])       */  \
    12,                 	/* can_queue                                    */  \
    -1,                         /* this_id                                      */  \
    SG_ALL,            		/* sg_tablesize                                 */  \
    1,                 		/* cmd_per_lun                                  */  \
    0,                 		/* present, i.e. how many adapters of this kind */  \
    0,                 		/* unchecked_isa_dma                            */  \
    DISABLE_CLUSTERING 		/* use_clustering                               */  \
    }

void AM53C974_setup(char *str, int *ints);
int AM53C974_detect(Scsi_Host_Template *tpnt);
int AM53C974_release(struct Scsi_Host *shp);
int AM53C974_biosparm(Disk *disk, int dev, int *info_array);
const char *AM53C974_info(struct Scsi_Host *);
int AM53C974_command(Scsi_Cmnd *SCpnt);
int AM53C974_queue_command(Scsi_Cmnd *cmd, void (*done)(Scsi_Cmnd *));
int AM53C974_abort(Scsi_Cmnd *cmd);
int AM53C974_reset (Scsi_Cmnd *cmd);

#endif /* AM53C974_H */