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wesc.c revision 1.7 
      1 /*	$NetBSD: wesc.c,v 1.7 1995/01/05 07:22:51 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 wescprint __P((void *auxp, char *));
     53 void wescattach __P((struct device *, struct device *, void *));
     54 int wescmatch __P((struct device *, struct cfdata *, void *));
     55 
     56 struct scsi_adapter wesc_scsiswitch = {
     57 	siop_scsicmd,
     58 	siop_minphys,
     59 	0,			/* no lun support */
     60 	0,			/* no lun support */
     61 };
     62 
     63 struct scsi_device wesc_scsidev = {
     64 	NULL,		/* use default error handler */
     65 	NULL,		/* do not have a start functio */
     66 	NULL,		/* have no async handler */
     67 	NULL,		/* Use default done routine */
     68 };
     69 
     70 
     71 #ifdef DEBUG
     72 #endif
     73 
     74 struct cfdriver wesccd = {
     75 	NULL, "wesc", (cfmatch_t)wescmatch, wescattach,
     76 	DV_DULL, sizeof(struct siop_softc), NULL, 0 };
     77 
     78 /*
     79  * if we are an MacroSystemsUS Warp Engine
     80  */
     81 int
     82 wescmatch(pdp, cdp, auxp)
     83 	struct device *pdp;
     84 	struct cfdata *cdp;
     85 	void *auxp;
     86 {
     87 	struct zbus_args *zap;
     88 
     89 	zap = auxp;
     90 	if (zap->manid == 2203 && zap->prodid == 19)
     91 		return(1);
     92 	return(0);
     93 }
     94 
     95 void
     96 wescattach(pdp, dp, auxp)
     97 	struct device *pdp, *dp;
     98 	void *auxp;
     99 {
    100 	struct siop_softc *sc;
    101 	struct zbus_args *zap;
    102 	siop_regmap_p rp;
    103 
    104 	printf("\n");
    105 
    106 	zap = auxp;
    107 
    108 	sc = (struct siop_softc *)dp;
    109 	sc->sc_siopp = rp = zap->va + 0x40000;
    110 
    111 	/*
    112 	 * DCNTL = 37.51->50.00MHZ / SCLK/2
    113 	 * CTEST7 = SC0, TT1
    114 	 */
    115 	sc->sc_clock_freq = 0x2200;
    116 
    117 	siopinitialize(sc);
    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 = 1;
    124 	TAILQ_INIT(&sc->sc_xslist);
    125 
    126 	custom.intreq = INTF_PORTS;
    127 	custom.intena = INTF_SETCLR | INTF_PORTS;
    128 
    129 	/*
    130 	 * attach all scsi units on us
    131 	 */
    132 	config_found(dp, &sc->sc_link, wescprint);
    133 }
    134 
    135 /*
    136  * print diag if pnp is NULL else just extra
    137  */
    138 int
    139 wescprint(auxp, pnp)
    140 	void *auxp;
    141 	char *pnp;
    142 {
    143 	if (pnp == NULL)
    144 		return(UNCONF);
    145 	return(QUIET);
    146 }
    147 
    148 
    149 int
    150 wesc_dmaintr()
    151 {
    152 	siop_regmap_p rp;
    153 	struct siop_softc *dev;
    154 	int i, found;
    155 	u_char istat;
    156 
    157 	found = 0;
    158 	for (i = 0; i < wesccd.cd_ndevs; i++) {
    159 		dev = wesccd.cd_devs[i];
    160 		if (dev == NULL)
    161 			continue;
    162 		rp = dev->sc_siopp;
    163 		istat = rp->siop_istat;
    164 		if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0)
    165 			continue;
    166 		if ((dev->sc_flags & (SIOP_DMA | SIOP_SELECTED)) == SIOP_SELECTED)
    167 			continue;	/* doing non-interrupt I/O */
    168 		found++;
    169 		dev->sc_istat = istat;
    170 		dev->sc_dstat = rp->siop_dstat;
    171 		dev->sc_sstat0 = rp->siop_sstat0;
    172 		siopintr(dev);
    173 	}
    174 	return(found);
    175 }
    176