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wesc.c revision 1.9 
      1 /*	$NetBSD: wesc.c,v 1.9 1995/08/18 15:28:16 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/amiga/isr.h>
     49 #include <amiga/dev/siopreg.h>
     50 #include <amiga/dev/siopvar.h>
     51 #include <amiga/dev/zbusvar.h>
     52 
     53 int wescprint __P((void *auxp, char *));
     54 void wescattach __P((struct device *, struct device *, void *));
     55 int wescmatch __P((struct device *, struct cfdata *, void *));
     56 int wesc_dmaintr __P((struct siop_softc *));
     57 
     58 struct scsi_adapter wesc_scsiswitch = {
     59 	siop_scsicmd,
     60 	siop_minphys,
     61 	0,			/* no lun support */
     62 	0,			/* no lun support */
     63 };
     64 
     65 struct scsi_device wesc_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 };
     71 
     72 
     73 #ifdef DEBUG
     74 #endif
     75 
     76 struct cfdriver wesccd = {
     77 	NULL, "wesc", (cfmatch_t)wescmatch, wescattach,
     78 	DV_DULL, sizeof(struct siop_softc), NULL, 0 };
     79 
     80 /*
     81  * if we are an MacroSystemsUS Warp Engine
     82  */
     83 int
     84 wescmatch(pdp, cdp, auxp)
     85 	struct device *pdp;
     86 	struct cfdata *cdp;
     87 	void *auxp;
     88 {
     89 	struct zbus_args *zap;
     90 
     91 	zap = auxp;
     92 	if (zap->manid == 2203 && zap->prodid == 19)
     93 		return(1);
     94 	return(0);
     95 }
     96 
     97 void
     98 wescattach(pdp, dp, auxp)
     99 	struct device *pdp, *dp;
    100 	void *auxp;
    101 {
    102 	struct siop_softc *sc;
    103 	struct zbus_args *zap;
    104 	siop_regmap_p rp;
    105 
    106 	printf("\n");
    107 
    108 	zap = auxp;
    109 
    110 	sc = (struct siop_softc *)dp;
    111 	sc->sc_siopp = rp = zap->va + 0x40000;
    112 
    113 	/*
    114 	 * DCNTL = 37.51->50.00MHZ / SCLK/2
    115 	 * CTEST7 = SC0, TT1
    116 	 */
    117 	sc->sc_clock_freq = 0x2200;
    118 
    119 	sc->sc_link.adapter_softc = sc;
    120 	sc->sc_link.adapter_target = 7;
    121 	sc->sc_link.adapter = &wesc_scsiswitch;
    122 	sc->sc_link.device = &wesc_scsidev;
    123 	sc->sc_link.openings = 2;
    124 
    125 	siopinitialize(sc);
    126 
    127 	sc->sc_isr.isr_intr = wesc_dmaintr;
    128 	sc->sc_isr.isr_arg = sc;
    129 	sc->sc_isr.isr_ipl = 2;
    130 	add_isr (&sc->sc_isr);
    131 
    132 	/*
    133 	 * attach all scsi units on us
    134 	 */
    135 	config_found(dp, &sc->sc_link, wescprint);
    136 }
    137 
    138 /*
    139  * print diag if pnp is NULL else just extra
    140  */
    141 int
    142 wescprint(auxp, pnp)
    143 	void *auxp;
    144 	char *pnp;
    145 {
    146 	if (pnp == NULL)
    147 		return(UNCONF);
    148 	return(QUIET);
    149 }
    150 
    151 
    152 int
    153 wesc_dmaintr(sc)
    154 	struct siop_softc *sc;
    155 {
    156 	siop_regmap_p rp;
    157 	u_char istat;
    158 
    159 	if (sc->sc_flags & SIOP_INTSOFF)
    160 		return (0);	/* interrupts are not active */
    161 	rp = sc->sc_siopp;
    162 	istat = rp->siop_istat;
    163 	if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0)
    164 		return (0);
    165 	/*
    166 	 * save interrupt status, DMA status, and SCSI status 0
    167 	 * (may need to deal with stacked interrupts?)
    168 	 */
    169 	sc->sc_sstat0 = rp->siop_sstat0;
    170 	sc->sc_istat = istat;
    171 	sc->sc_dstat = rp->siop_dstat;
    172 	siopintr(sc);
    173 	return(1);
    174 }
    175