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afsc.c revision 1.5 
      1 /*	$NetBSD: afsc.c,v 1.5 1995/01/05 07:22:31 chopps Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994 Michael L. Hitch
      5  * Copyright (c) 1982, 1990 The Regents of the University of California.
      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 the University of
     19  *	California, Berkeley and its contributors.
     20  * 4. Neither the name of the University nor the names of its contributors
     21  *    may be used to endorse or promote products derived from this software
     22  *    without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  *
     36  *	@(#)dma.c
     37  */
     38 
     39 #include <sys/param.h>
     40 #include <sys/systm.h>
     41 #include <sys/kernel.h>
     42 #include <sys/device.h>
     43 #include <scsi/scsi_all.h>
     44 #include <scsi/scsiconf.h>
     45 #include <amiga/amiga/custom.h>
     46 #include <amiga/amiga/cc.h>
     47 #include <amiga/amiga/device.h>
     48 #include <amiga/dev/siopreg.h>
     49 #include <amiga/dev/siopvar.h>
     50 #include <amiga/dev/zbusvar.h>
     51 
     52 int afscprint __P((void *auxp, char *));
     53 void afscattach __P((struct device *, struct device *, void *));
     54 int afscmatch __P((struct device *, struct cfdata *, void *));
     55 int siopintr __P((struct siop_softc *));
     56 
     57 struct scsi_adapter afsc_scsiswitch = {
     58 	siop_scsicmd,
     59 	siop_minphys,
     60 	0,			/* no lun support */
     61 	0,			/* no lun support */
     62 };
     63 
     64 struct scsi_device afsc_scsidev = {
     65 	NULL,		/* use default error handler */
     66 	NULL,		/* do not have a start functio */
     67 	NULL,		/* have no async handler */
     68 	NULL,		/* Use default done routine */
     69 };
     70 
     71 
     72 #ifdef DEBUG
     73 #endif
     74 
     75 struct cfdriver afsccd = {
     76 	NULL, "afsc", (cfmatch_t)afscmatch, afscattach,
     77 	DV_DULL, sizeof(struct siop_softc), NULL, 0 };
     78 
     79 /*
     80  * if we are a Commodore Amiga A4091
     81  */
     82 int
     83 afscmatch(pdp, cdp, auxp)
     84 	struct device *pdp;
     85 	struct cfdata *cdp;
     86 	void *auxp;
     87 {
     88 	struct zbus_args *zap;
     89 
     90 	zap = auxp;
     91 	if (zap->manid == 514 && zap->prodid == 84)
     92 		return(1);
     93 	return(0);
     94 }
     95 
     96 void
     97 afscattach(pdp, dp, auxp)
     98 	struct device *pdp, *dp;
     99 	void *auxp;
    100 {
    101 	struct siop_softc *sc;
    102 	struct zbus_args *zap;
    103 	siop_regmap_p rp;
    104 
    105 	printf("\n");
    106 
    107 	zap = auxp;
    108 
    109 	sc = (struct siop_softc *)dp;
    110 	sc->sc_siopp = rp = zap->va + 0x00800000;
    111 
    112 	/*
    113 	 * DCNTL = 37.51->50MHZ / SCLK/2
    114 	 * CTEST7 = 80 [disable burst]
    115 	 */
    116 	sc->sc_clock_freq = 0x8000;
    117 
    118 
    119 	siopinitialize(sc);
    120 
    121 	sc->sc_link.adapter_softc = sc;
    122 	sc->sc_link.adapter_target = 7;
    123 	sc->sc_link.adapter = &afsc_scsiswitch;
    124 	sc->sc_link.device = &afsc_scsidev;
    125 	sc->sc_link.openings = 1;
    126 	TAILQ_INIT(&sc->sc_xslist);
    127 
    128 	custom.intreq = INTF_PORTS;
    129 	custom.intena = INTF_SETCLR | INTF_PORTS;
    130 
    131 	/*
    132 	 * attach all scsi units on us
    133 	 */
    134 	config_found(dp, &sc->sc_link, afscprint);
    135 }
    136 
    137 /*
    138  * print diag if pnp is NULL else just extra
    139  */
    140 int
    141 afscprint(auxp, pnp)
    142 	void *auxp;
    143 	char *pnp;
    144 {
    145 	if (pnp == NULL)
    146 		return(UNCONF);
    147 	return(QUIET);
    148 }
    149 
    150 int
    151 afsc_dmaintr()
    152 {
    153 	siop_regmap_p rp;
    154 	struct siop_softc *dev;
    155 	int i, found;
    156 	u_char istat;
    157 
    158 	found = 0;
    159 	for (i = 0; i < afsccd.cd_ndevs; i++) {
    160 		dev = afsccd.cd_devs[i];
    161 		if (dev == NULL)
    162 			continue;
    163 		rp = dev->sc_siopp;
    164 		istat = rp->siop_istat;
    165 		if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0)
    166 			continue;
    167 		if ((dev->sc_flags & (SIOP_DMA | SIOP_SELECTED)) == SIOP_SELECTED)
    168 			continue;	/* doing non-interrupt I/O */
    169 		found++;
    170 		dev->sc_istat = istat;
    171 		dev->sc_dstat = rp->siop_dstat;
    172 		dev->sc_sstat0 = rp->siop_sstat0;
    173 		siopintr(dev);
    174 	}
    175 	return(found);
    176 }
    177