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promdev.c revision 1.2 
      1 /*	$NetBSD: promdev.c,v 1.2 2002/05/15 04:07:43 lukem Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1995 Gordon W. Ross
      5  * Copyright (c) 1993 Paul Kranenburg
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *      This product includes software developed by Paul Kranenburg.
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #include <sys/types.h>
     35 #include <machine/mon.h>
     36 
     37 #include <stand.h>
     38 
     39 #include "libsa.h"
     40 #include "dvma.h"
     41 #include "saio.h"
     42 
     43 int promdev_inuse;
     44 
     45 /*
     46  * Note: caller sets the fields:
     47  *	si->si_boottab
     48  *	si->si_ctlr
     49  *	si->si_unit
     50  *	si->si_boff
     51  */
     52 
     53 int
     54 prom_iopen(si)
     55 	struct saioreq *si;
     56 {
     57 	struct boottab *ops;
     58 	struct devinfo *dip;
     59 	int	i, ctlr, error;
     60 
     61 	if (promdev_inuse)
     62 		return(EMFILE);
     63 
     64 	ops = si->si_boottab;
     65 	dip = ops->b_devinfo;
     66 	ctlr = si->si_ctlr;
     67 
     68 #ifdef DEBUG_PROM
     69 	if (debug) {
     70 		printf("Boot device type: %s\n", ops->b_desc);
     71 	}
     72 #endif
     73 
     74 	if (!_is2) {
     75 #ifdef DEBUG_PROM
     76 		if (debug) {
     77 		printf("d_devbytes=%d\n", dip->d_devbytes);
     78 		printf("d_dmabytes=%d\n", dip->d_dmabytes);
     79 		printf("d_localbytes=%d\n", dip->d_localbytes);
     80 		printf("d_devtype=%d\n", dip->d_devtype);
     81 		printf("d_maxiobytes=%d\n", dip->d_maxiobytes);
     82 		printf("d_stdcount=%d\n", dip->d_stdcount);
     83 		for (i = 0; i < dip->d_stdcount; i++)
     84 			printf("d_stdaddrs[i]=0x%x\n",
     85 				   i, dip->d_stdaddrs[0]);
     86 	}
     87 #endif
     88 
     89 	if (dip->d_devbytes && dip->d_stdcount) {
     90 		if (ctlr >= dip->d_stdcount) {
     91 			putstr("Invalid controller number\n");
     92 			return(ENXIO);
     93 		}
     94 		si->si_devaddr = dev_mapin(dip->d_devtype,
     95 			dip->d_stdaddrs[ctlr], dip->d_devbytes);
     96 #ifdef	DEBUG_PROM
     97 		if (debug)
     98 			printf("prom_iopen: devaddr=0x%x\n", si->si_devaddr);
     99 #endif
    100 	}
    101 
    102 	if (dip->d_dmabytes) {
    103 		si->si_dmaaddr = dvma_alloc(dip->d_dmabytes);
    104 #ifdef	DEBUG_PROM
    105 		if (debug)
    106 			printf("prom_iopen: dmaaddr=0x%x\n", si->si_dmaaddr);
    107 #endif
    108 	}
    109 
    110 	if (dip->d_localbytes) {
    111 		si->si_devdata = alloc(dip->d_localbytes);
    112 #ifdef	DEBUG_PROM
    113 		if (debug)
    114 			printf("prom_iopen: devdata=0x%x\n", si->si_devdata);
    115 #endif
    116 		}
    117 	}
    118 
    119 	/* OK, call the PROM device open routine. */
    120 #ifdef	DEBUG_PROM
    121 	if (debug)
    122 		printf("prom_iopen: calling prom open...\n");
    123 #endif
    124 	error = (*ops->b_open)(si);
    125 #ifdef	DEBUG_PROM
    126 	if (debug)
    127 		printf("prom_iopen: prom open returned %d\n", error);
    128 #endif
    129 	if (error != 0) {
    130 #if 0	/* XXX: printf is too big for bootxx */
    131 		printf("prom_iopen: \"%s\" error=%d\n",
    132 			   ops->b_desc, error);
    133 #else
    134 		putstr("prom_iopen: prom open failed");
    135 #endif
    136 		return (ENXIO);
    137 	}
    138 
    139 	promdev_inuse++;
    140 	return (0);
    141 }
    142 
    143 void
    144 prom_iclose(si)
    145 	struct saioreq *si;
    146 {
    147 	struct boottab *ops;
    148 	struct devinfo *dip;
    149 
    150 	if (promdev_inuse == 0)
    151 		return;
    152 
    153 	ops = si->si_boottab;
    154 	dip = ops->b_devinfo;
    155 
    156 #ifdef	DEBUG_PROM
    157 	if (debug)
    158 		printf("prom_iclose: calling prom close...\n");
    159 #endif
    160 	(*ops->b_close)(si);
    161 
    162 	promdev_inuse = 0;
    163 }
    164 
    165