/*      $NetBSD: promdev.c,v 1.7 2017/02/01 18:24:22 christos Exp $ */

/*
 * Copyright (c) 1995 Gordon W. Ross
 * Copyright (c) 1993 Paul Kranenburg
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Paul Kranenburg.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/types.h>
#include <machine/mon.h>

#include <stand.h>

#include "libsa.h"
#include "dvma.h"
#include "saio.h"

int promdev_inuse;

#ifdef DEBUG_PROM
# define DPRINTF(fmt, ...) \
        do { \
                if (debug) \
                        printf("%s: " fmt "\n", __func__, __VA_ARGS__); \
        } while (/*CONSTCOND*/0)
#else
# define DPRINTF(fmt, ...)
#endif

/*
 * Note: caller sets the fields:
 *      si->si_boottab
 *      si->si_ctlr
 *      si->si_unit
 *      si->si_boff
 */

int 
prom_iopen(struct saioreq *si)
{
        struct boottab *ops;
        struct devinfo *dip;
        int     ctlr, error;

        if (promdev_inuse)
                return EMFILE;

        ops = si->si_boottab;
        dip = ops->b_devinfo;
        ctlr = si->si_ctlr;


        DPRINTF("Boot device type: %s", ops->b_desc);

        if (!_is2) {
#ifdef DEBUG_PROM
                if (debug) {
                        printf("d_devbytes=%d\n", dip->d_devbytes);
                        printf("d_dmabytes=%d\n", dip->d_dmabytes);
                        printf("d_localbytes=%d\n", dip->d_localbytes);
                        printf("d_devtype=%d\n", dip->d_devtype);
                        printf("d_maxiobytes=%d\n", dip->d_maxiobytes);
                        printf("d_stdcount=%d\n", dip->d_stdcount);
                        for (int i = 0; i < dip->d_stdcount; i++)
                                printf("d_stdaddrs[%d]=%#x\n",
                                    i, dip->d_stdaddrs[0]);
                }
#endif

                if (dip->d_devbytes && dip->d_stdcount) {
                        if (ctlr >= dip->d_stdcount) {
                                putstr("Invalid controller number\n");
                                return ENXIO;
                        }
                        si->si_devaddr = dev_mapin(dip->d_devtype,
                            dip->d_stdaddrs[ctlr], dip->d_devbytes);
                        DPRINTF("devaddr=%#x", si->si_devaddr);
                }

                if (dip->d_dmabytes) {
                        si->si_dmaaddr = dvma_alloc(dip->d_dmabytes);
                        DPRINTF("dmaaddr=%#x", si->si_dmaaddr);
                }

                if (dip->d_localbytes) {
                        si->si_devdata = alloc(dip->d_localbytes);
                        DPRINTF("devdata=%#x", si->si_devdata);
                }
        }

        /* OK, call the PROM device open routine. */
        DPRINTF("calling prom open... %p", si);
        error = (*ops->b_open)(si);
        DPRINTF("prom open returned %d", error);
        if (error != 0) {
#if 0           /* XXX: printf is too big for bootxx */
                printf("%s: \"%s\" error=%d\n", __func__,
                    ops->b_desc, error);
#else
                putstr("prom_iopen: prom open failed");
#endif
                return ENXIO;
        }

        promdev_inuse++;
        return 0;
}

void 
prom_iclose(struct saioreq *si)
{
        struct boottab *ops;

        if (promdev_inuse == 0)
                return;

        ops = si->si_boottab;

        DPRINTF("calling prom close... %p", si);
        (*ops->b_close)(si);

        promdev_inuse = 0;
}