/* $OpenBSD: tcdsvar.h,v 1.4 2008/08/09 16:42:30 miod Exp $ */
/* $NetBSD: tcdsvar.h,v 1.2 2001/08/22 05:00:27 nisimura Exp $ */

/*
 * Copyright (c) 1995, 1996 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Author: Chris G. Demetriou
 * 
 * Permission to use, copy, modify and distribute this software and
 * its documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 
 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 */

struct tcds_slotconfig {
        /*
         * Bookkeeping information
         */
        int     sc_slot;

        bus_space_tag_t sc_bst;                 /* to frob TCDS regs */
        bus_space_handle_t sc_bsh;

        int     (*sc_intrhand)(void *);         /* intr. handler */
        void    *sc_intrarg;                    /* intr. handler arg. */
        struct evcount sc_count;                /* intr. count */

        /*
         * Sets of bits in TCDS CIR and IMER that enable/check
         * various things.
         */
        u_int32_t sc_resetbits;
        u_int32_t sc_intrmaskbits;
        u_int32_t sc_intrbits;
        u_int32_t sc_dmabits;
        u_int32_t sc_errorbits;

        /*
         * Offsets to slot-specific DMA resources.
         */
        bus_size_t sc_sda;
        bus_size_t sc_dic;
        bus_size_t sc_dud0;
        bus_size_t sc_dud1;
};

struct tcdsdev_attach_args {
        bus_space_tag_t tcdsda_bst;             /* bus space tag */
        bus_space_handle_t tcdsda_bsh;          /* bus space handle */
        bus_dma_tag_t tcdsda_dmat;              /* bus dma tag */
        struct tcds_slotconfig *tcdsda_sc;      /* slot configuration */
        int     tcdsda_chip;                    /* chip number */
        int     tcdsda_id;                      /* SCSI ID */
        u_int   tcdsda_freq;                    /* chip frequency */
        int     tcdsda_period;                  /* min. sync period */
        int     tcdsda_variant;                 /* NCR chip variant */
        int     tcdsda_fast;                    /* chip does Fast mode */
};

/*
 * TCDS functions.
 */
void    tcds_intr_establish(struct device *, int,
            int (*)(void *), void *, const char *);
void    tcds_intr_disestablish(struct device *, int);
void    tcds_dma_enable(struct tcds_slotconfig *, int);
void    tcds_scsi_enable(struct tcds_slotconfig *, int);
int     tcds_scsi_iserr(struct tcds_slotconfig *);
int     tcds_scsi_isintr(struct tcds_slotconfig *, int);
void    tcds_scsi_reset(struct tcds_slotconfig *);