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afsc.c revision 1.1 
      1 /*
      2  * Copyright (c) 1994 Michael L. Hitch
      3  * Copyright (c) 1982, 1990 The Regents of the University of California.
      4  * All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *	This product includes software developed by the University of
     17  *	California, Berkeley and its contributors.
     18  * 4. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  *	@(#)dma.c
     35  *	$Id: afsc.c,v 1.1 1994/10/06 19:06:40 chopps Exp $
     36  */
     37 
     38 #include <sys/param.h>
     39 #include <sys/systm.h>
     40 #include <sys/kernel.h>
     41 #include <sys/device.h>
     42 #include <scsi/scsi_all.h>
     43 #include <scsi/scsiconf.h>
     44 #include <amiga/amiga/custom.h>
     45 #include <amiga/amiga/cc.h>
     46 #include <amiga/amiga/device.h>
     47 #include <amiga/dev/siopreg.h>
     48 #include <amiga/dev/siopvar.h>
     49 #include <amiga/dev/zthreebusvar.h>
     50 
     51 int afscprint __P((void *auxp, char *));
     52 void afscattach __P((struct device *, struct device *, void *));
     53 int afscmatch __P((struct device *, struct cfdata *, void *));
     54 int siopintr __P((struct siop_softc *));
     55 
     56 struct scsi_adapter afsc_scsiswitch = {
     57 	siop_scsicmd,
     58 	siop_minphys,
     59 	0,			/* no lun support */
     60 	0,			/* no lun support */
     61 	siop_adinfo,
     62 	"afsc",
     63 };
     64 
     65 struct scsi_device afsc_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 	"afsc",
     71 	0,
     72 };
     73 
     74 
     75 #ifdef DEBUG
     76 #endif
     77 
     78 struct cfdriver afsccd = {
     79 	NULL, "afsc", afscmatch, afscattach,
     80 	DV_DULL, sizeof(struct siop_softc), NULL, 0 };
     81 
     82 /*
     83  * if we are a Commodore Amiga A4091
     84  */
     85 int
     86 afscmatch(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 == 514 && zap->prodid == 84)
     95 		return(1);
     96 	return(0);
     97 }
     98 
     99 void
    100 afscattach(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 
    110 	zap = auxp;
    111 
    112 	sc = (struct siop_softc *)dp;
    113 	sc->sc_siopp = rp = zap->va + 0x00800000;
    114 
    115 	/*
    116 	 * DCNTL = 37.51->50MHZ / SCLK/2
    117 	 * CTEST7 = 80 [disable burst]
    118 	 */
    119 	sc->sc_clock_freq = 0x8000;
    120 
    121 
    122 	siopinitialize(sc);
    123 
    124 	sc->sc_link.adapter_softc = sc;
    125 	sc->sc_link.adapter_targ = 7;
    126 	sc->sc_link.adapter = &afsc_scsiswitch;
    127 	sc->sc_link.device = &afsc_scsidev;
    128 	TAILQ_INIT(&sc->sc_xslist);
    129 
    130 	custom.intreq = INTF_PORTS;
    131 	custom.intena = INTF_SETCLR | INTF_PORTS;
    132 
    133 	/*
    134 	 * attach all scsi units on us
    135 	 */
    136 	config_found(dp, &sc->sc_link, afscprint);
    137 }
    138 
    139 /*
    140  * print diag if pnp is NULL else just extra
    141  */
    142 int
    143 afscprint(auxp, pnp)
    144 	void *auxp;
    145 	char *pnp;
    146 {
    147 	if (pnp == NULL)
    148 		return(UNCONF);
    149 	return(QUIET);
    150 }
    151 
    152 int
    153 afsc_dmaintr()
    154 {
    155 	siop_regmap_p rp;
    156 	struct siop_softc *dev;
    157 	int i, found;
    158 	u_char istat;
    159 
    160 	found = 0;
    161 	for (i = 0; i < afsccd.cd_ndevs; i++) {
    162 		dev = afsccd.cd_devs[i];
    163 		if (dev == NULL)
    164 			continue;
    165 		rp = dev->sc_siopp;
    166 		istat = rp->siop_istat;
    167 		if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0)
    168 			continue;
    169 		if ((dev->sc_flags & (SIOP_DMA | SIOP_SELECTED)) == SIOP_SELECTED)
    170 			continue;	/* doing non-interrupt I/O */
    171 		found++;
    172 		dev->sc_istat = istat;
    173 		dev->sc_dstat = rp->siop_dstat;
    174 		dev->sc_sstat0 = rp->siop_sstat0;
    175 		siopintr(dev);
    176 	}
    177 	return(found);
    178 }
    179