initial import of NetBSD tree

1 files changed, 220 insertions, 0 deletions

diff --git a/sys/arch/amiga/dev/afsc.c b/sys/arch/amiga/dev/afsc.c
new file mode 100644
index 00000000000..0f3723dee17
--- /dev/null
+++ b/sys/arch/amiga/dev/afsc.c
@@ -0,0 +1,220 @@
+/*	$NetBSD: afsc.c,v 1.9 1995/10/05 12:41:09 chopps Exp $	*/
+
+/*
+ * Copyright (c) 1994 Michael L. Hitch
+ * Copyright (c) 1982, 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)dma.c
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/device.h>
+#include <scsi/scsi_all.h>
+#include <scsi/scsiconf.h>
+#include <amiga/amiga/custom.h>
+#include <amiga/amiga/cc.h>
+#include <amiga/amiga/device.h>
+#include <amiga/amiga/isr.h>
+#include <amiga/dev/siopreg.h>
+#include <amiga/dev/siopvar.h>
+#include <amiga/dev/zbusvar.h>
+
+int afscprint __P((void *auxp, char *));
+void afscattach __P((struct device *, struct device *, void *));
+int afscmatch __P((struct device *, struct cfdata *, void *));
+int siopintr __P((struct siop_softc *));
+int afsc_dmaintr __P((struct siop_softc *));
+
+struct scsi_adapter afsc_scsiswitch = {
+	siop_scsicmd,
+	siop_minphys,
+	0,			/* no lun support */
+	0,			/* no lun support */
+};
+
+struct scsi_device afsc_scsidev = {
+	NULL,		/* use default error handler */
+	NULL,		/* do not have a start functio */
+	NULL,		/* have no async handler */
+	NULL,		/* Use default done routine */
+};
+
+
+#ifdef DEBUG
+#endif
+
+struct cfdriver afsccd = {
+	NULL, "afsc", (cfmatch_t)afscmatch, afscattach, 
+	DV_DULL, sizeof(struct siop_softc), NULL, 0 };
+struct cfdriver aftsccd = {
+	NULL, "afsc", (cfmatch_t)afscmatch, afscattach, 
+	DV_DULL, sizeof(struct siop_softc), NULL, 0 };
+
+/*
+ * if we are a Commodore Amiga A4091 or possibly an A4000T
+ */
+int
+afscmatch(pdp, cdp, auxp)
+	struct device *pdp;
+	struct cfdata *cdp;
+	void *auxp;
+{
+	struct zbus_args *zap;
+	siop_regmap_p rp;
+	u_long temp, scratch;
+
+	zap = auxp;
+	if (zap->manid == 514 && zap->prodid == 84)
+		return(1);		/* It's an A4091 SCSI card */
+	if (!is_a4000() || !matchname(auxp, "afsc"))
+		return(0);		/* Not on an A4000 or not A4000T SCSI */
+#ifdef DEBUG
+	printf("afscmatch: probing for A4000T\n");
+#endif
+	rp = ztwomap(0xdd0040);
+	if (badaddr(&rp->siop_scratch) || badaddr(&rp->siop_temp)) {
+#ifdef DEBUG
+		printf("afscmatch: A4000T probed bad address\n");
+#endif
+		return(0);
+	}
+	scratch = rp->siop_scratch;
+	temp = rp->siop_temp;
+	rp->siop_scratch = 0xdeadbeef;
+	rp->siop_temp = 0xaaaa5555;
+#ifdef DEBUG
+	printf("afscmatch: probe %x %x %x %X\n", scratch, temp,
+	    rp->siop_scratch, rp->siop_temp);
+#endif
+	if (rp->siop_scratch != 0xdeadbeef || rp->siop_temp != 0xaaaa5555)
+		return(0);
+	rp->siop_scratch = scratch;
+	rp->siop_temp = temp;
+	if (rp->siop_scratch != scratch || rp->siop_temp != temp)
+		return(0);
+	return(1);
+}
+
+void
+afscattach(pdp, dp, auxp)
+	struct device *pdp, *dp;
+	void *auxp;
+{
+	struct siop_softc *sc;
+	struct zbus_args *zap;
+	siop_regmap_p rp;
+
+	printf("\n");
+
+	zap = auxp;
+
+	sc = (struct siop_softc *)dp;
+	if (zap->manid == 514 && zap->prodid == 84)
+		sc->sc_siopp = rp = zap->va + 0x00800000;
+	else
+		sc->sc_siopp = rp = ztwomap(0xdd0040);
+
+	/*
+	 * CTEST7 = 80 [disable burst]
+	 */
+	sc->sc_clock_freq = 50;		/* Clock = 50Mhz */
+	sc->sc_ctest7 = 0x80;		/* CDIS */
+
+	sc->sc_link.adapter_softc = sc;
+	sc->sc_link.adapter_target = 7;
+	sc->sc_link.adapter = &afsc_scsiswitch;
+	sc->sc_link.device = &afsc_scsidev;
+	sc->sc_link.openings = 2;
+
+	siopinitialize(sc);
+
+	sc->sc_isr.isr_intr = afsc_dmaintr;
+	sc->sc_isr.isr_arg = sc;
+	sc->sc_isr.isr_ipl = 2;
+	add_isr (&sc->sc_isr);
+
+	/*
+	 * attach all scsi units on us
+	 */
+	config_found(dp, &sc->sc_link, afscprint);
+}
+
+/*
+ * print diag if pnp is NULL else just extra
+ */
+int
+afscprint(auxp, pnp)
+	void *auxp;
+	char *pnp;
+{
+	if (pnp == NULL)
+		return(UNCONF);
+	return(QUIET);
+}
+
+int
+afsc_dmaintr(sc)
+	struct siop_softc *sc;
+{
+	siop_regmap_p rp;
+	u_char istat;
+
+	if (sc->sc_flags & SIOP_INTSOFF)
+		return (0);	/* interrupts are not active */
+	rp = sc->sc_siopp;
+	istat = rp->siop_istat;
+	if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0)
+		return(0);
+	/*
+	 * save interrupt status, DMA status, and SCSI status 0
+	 * (may need to deal with stacked interrupts?)
+	 */
+	sc->sc_sstat0 = rp->siop_sstat0;
+	sc->sc_istat = istat;
+	sc->sc_dstat = rp->siop_dstat;
+	siopintr(sc);
+	return(1);
+}
+
+#ifdef DEBUG
+void
+afsc_dump()
+{
+	int i;
+
+	for (i = 0; i < afsccd.cd_ndevs; ++i)
+		if (afsccd.cd_devs[i])
+			siop_dump(afsccd.cd_devs[i]);
+}
+#endif