/*      $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;
}