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promdev.c revision 1.3 
      1 /*	$NetBSD: promdev.c,v 1.3 2005/01/22 15:36:11 chs 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(struct saioreq *si)
     55 {
     56 	struct boottab *ops;
     57 	struct devinfo *dip;
     58 	int	i, ctlr, error;
     59 
     60 	if (promdev_inuse)
     61 		return(EMFILE);
     62 
     63 	ops = si->si_boottab;
     64 	dip = ops->b_devinfo;
     65 	ctlr = si->si_ctlr;
     66 
     67 #ifdef DEBUG_PROM
     68 	if (debug) {
     69 		printf("Boot device type: %s\n", ops->b_desc);
     70 	}
     71 #endif
     72 
     73 	if (!_is2) {
     74 #ifdef DEBUG_PROM
     75 		if (debug) {
     76 		printf("d_devbytes=%d\n", dip->d_devbytes);
     77 		printf("d_dmabytes=%d\n", dip->d_dmabytes);
     78 		printf("d_localbytes=%d\n", dip->d_localbytes);
     79 		printf("d_devtype=%d\n", dip->d_devtype);
     80 		printf("d_maxiobytes=%d\n", dip->d_maxiobytes);
     81 		printf("d_stdcount=%d\n", dip->d_stdcount);
     82 		for (i = 0; i < dip->d_stdcount; i++)
     83 			printf("d_stdaddrs[i]=0x%x\n",
     84 				   i, dip->d_stdaddrs[0]);
     85 	}
     86 #endif
     87 
     88 	if (dip->d_devbytes && dip->d_stdcount) {
     89 		if (ctlr >= dip->d_stdcount) {
     90 			putstr("Invalid controller number\n");
     91 			return(ENXIO);
     92 		}
     93 		si->si_devaddr = dev_mapin(dip->d_devtype,
     94 			dip->d_stdaddrs[ctlr], dip->d_devbytes);
     95 #ifdef	DEBUG_PROM
     96 		if (debug)
     97 			printf("prom_iopen: devaddr=0x%x\n", si->si_devaddr);
     98 #endif
     99 	}
    100 
    101 	if (dip->d_dmabytes) {
    102 		si->si_dmaaddr = dvma_alloc(dip->d_dmabytes);
    103 #ifdef	DEBUG_PROM
    104 		if (debug)
    105 			printf("prom_iopen: dmaaddr=0x%x\n", si->si_dmaaddr);
    106 #endif
    107 	}
    108 
    109 	if (dip->d_localbytes) {
    110 		si->si_devdata = alloc(dip->d_localbytes);
    111 #ifdef	DEBUG_PROM
    112 		if (debug)
    113 			printf("prom_iopen: devdata=0x%x\n", si->si_devdata);
    114 #endif
    115 		}
    116 	}
    117 
    118 	/* OK, call the PROM device open routine. */
    119 #ifdef	DEBUG_PROM
    120 	if (debug)
    121 		printf("prom_iopen: calling prom open...\n");
    122 #endif
    123 	error = (*ops->b_open)(si);
    124 #ifdef	DEBUG_PROM
    125 	if (debug)
    126 		printf("prom_iopen: prom open returned %d\n", error);
    127 #endif
    128 	if (error != 0) {
    129 #if 0	/* XXX: printf is too big for bootxx */
    130 		printf("prom_iopen: \"%s\" error=%d\n",
    131 			   ops->b_desc, error);
    132 #else
    133 		putstr("prom_iopen: prom open failed");
    134 #endif
    135 		return (ENXIO);
    136 	}
    137 
    138 	promdev_inuse++;
    139 	return (0);
    140 }
    141 
    142 void
    143 prom_iclose(struct saioreq *si)
    144 {
    145 	struct boottab *ops;
    146 	struct devinfo *dip;
    147 
    148 	if (promdev_inuse == 0)
    149 		return;
    150 
    151 	ops = si->si_boottab;
    152 	dip = ops->b_devinfo;
    153 
    154 #ifdef	DEBUG_PROM
    155 	if (debug)
    156 		printf("prom_iclose: calling prom close...\n");
    157 #endif
    158 	(*ops->b_close)(si);
    159 
    160 	promdev_inuse = 0;
    161 }
    162