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mgnsc.c revision 1.7 
      1 /*	$NetBSD: mgnsc.c,v 1.7 1994/12/01 17:25:26 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/zthreebusvar.h>
     51 
     52 int mgnscprint __P((void *auxp, char *));
     53 void mgnscattach __P((struct device *, struct device *, void *));
     54 int mgnscmatch __P((struct device *, struct cfdata *, void *));
     55 
     56 struct scsi_adapter mgnsc_scsiswitch = {
     57 	siop_scsicmd,
     58 	siop_minphys,
     59 	0,			/* no lun support */
     60 	0,			/* no lun support */
     61 	siop_adinfo,
     62 	"mgnsc",
     63 };
     64 
     65 struct scsi_device mgnsc_scsidev = {
     66 	NULL,		/* use default error handler */
     67 	NULL,		/* do not have a start functio */
     68 	NULL,		/* have no async handler */
     69 	NULL,		/* Use default done routine */
     70 	"mgnsc",
     71 	0,
     72 };
     73 
     74 
     75 #ifdef DEBUG
     76 #endif
     77 
     78 struct cfdriver mgnsccd = {
     79 	NULL, "mgnsc", (cfmatch_t)mgnscmatch, mgnscattach,
     80 	DV_DULL, sizeof(struct siop_softc), NULL, 0 };
     81 
     82 /*
     83  * if we are a CSA Magnum 40 SCSI
     84  */
     85 int
     86 mgnscmatch(pdp, cdp, auxp)
     87 	struct device *pdp;
     88 	struct cfdata *cdp;
     89 	void *auxp;
     90 {
     91 	struct zthreebus_args *zap;
     92 
     93 	zap = auxp;
     94 	if (zap->manid == 1058 && zap->prodid == 17)
     95 		return(1);
     96 	return(0);
     97 }
     98 
     99 void
    100 mgnscattach(pdp, dp, auxp)
    101 	struct device *pdp, *dp;
    102 	void *auxp;
    103 {
    104 	struct siop_softc *sc;
    105 	struct zthreebus_args *zap;
    106 	siop_regmap_p rp;
    107 
    108 	printf("\n");
    109 	zap = auxp;
    110 
    111 	sc = (struct siop_softc *)dp;
    112 	sc->sc_siopp = rp = zap->va + 0x8000;
    113 
    114 	/*
    115 	 * DCNTL = 25.01->37.5MHZ / SCLK/1.5
    116 	 * CTEST7 = TT1
    117 	 */
    118 	sc->sc_clock_freq = 0x0240;
    119 
    120 	siopinitialize(sc);
    121 
    122 	sc->sc_link.adapter_softc = sc;
    123 	sc->sc_link.adapter_targ = 7;
    124 	sc->sc_link.adapter = &mgnsc_scsiswitch;
    125 	sc->sc_link.device = &mgnsc_scsidev;
    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, mgnscprint);
    135 }
    136 
    137 /*
    138  * print diag if pnp is NULL else just extra
    139  */
    140 int
    141 mgnscprint(auxp, pnp)
    142 	void *auxp;
    143 	char *pnp;
    144 {
    145 	if (pnp == NULL)
    146 		return(UNCONF);
    147 	return(QUIET);
    148 }
    149 
    150 
    151 int
    152 mgnsc_dmaintr()
    153 {
    154 	siop_regmap_p rp;
    155 	struct siop_softc *dev;
    156 	int i, found;
    157 	u_char istat;
    158 
    159 	found = 0;
    160 	for (i = 0; i < mgnsccd.cd_ndevs; i++) {
    161 		dev = mgnsccd.cd_devs[i];
    162 		if (dev == NULL)
    163 			continue;
    164 		rp = dev->sc_siopp;
    165 		istat = rp->siop_istat;
    166 		if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0)
    167 			continue;
    168 		if ((dev->sc_flags & (SIOP_DMA | SIOP_SELECTED)) == SIOP_SELECTED)
    169 			continue;	/* doing non-interrupt I/O */
    170 		found++;
    171 		dev->sc_istat = istat;
    172 		dev->sc_dstat = rp->siop_dstat;
    173 		dev->sc_sstat0 = rp->siop_sstat0;
    174 		siopintr(dev);
    175 	}
    176 	return(found);
    177 }
    178