initial import of NetBSD tree

1 files changed, 202 insertions, 0 deletions

diff --git a/sys/arch/amiga/dev/mgnsc.c b/sys/arch/amiga/dev/mgnsc.c
new file mode 100644
index 00000000000..a41f58f6fa3
--- /dev/null
+++ b/sys/arch/amiga/dev/mgnsc.c
@@ -0,0 +1,202 @@
+/*	$NetBSD: mgnsc.c,v 1.15 1995/10/09 15:20:36 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 mgnscprint __P((void *auxp, char *));
+void mgnscattach __P((struct device *, struct device *, void *));
+int mgnscmatch __P((struct device *, struct cfdata *, void *));
+int siopintr __P((struct siop_softc *));
+int mgnsc_dmaintr __P((struct siop_softc *));
+
+struct scsi_adapter mgnsc_scsiswitch = {
+	siop_scsicmd,
+	siop_minphys,
+	0,			/* no lun support */
+	0,			/* no lun support */
+};
+
+struct scsi_device mgnsc_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 mgnsccd = {
+	NULL, "mgnsc", (cfmatch_t)mgnscmatch, mgnscattach, 
+	DV_DULL, sizeof(struct siop_softc), NULL, 0 };
+
+/*
+ * if we are a CSA Magnum 40 SCSI
+ */
+int
+mgnscmatch(pdp, cdp, auxp)
+	struct device *pdp;
+	struct cfdata *cdp;
+	void *auxp;
+{
+	struct zbus_args *zap;
+
+	zap = auxp;
+	if (zap->manid == 1058 && zap->prodid == 17)
+		return(1);
+	return(0);
+}
+
+void
+mgnscattach(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;
+	sc->sc_siopp = rp = zap->va + 0x8000;
+
+	/*
+	 * CTEST7 = TT1
+	 */
+	sc->sc_clock_freq = 33;		/* Clock = 33Mhz */
+	sc->sc_ctest7 = 0x02;		/* TT1 */
+
+	alloc_sicallback();
+
+	sc->sc_link.adapter_softc = sc;
+	sc->sc_link.adapter_target = 7;
+	sc->sc_link.adapter = &mgnsc_scsiswitch;
+	sc->sc_link.device = &mgnsc_scsidev;
+	sc->sc_link.openings = 2;
+
+	siopinitialize(sc);
+
+	sc->sc_isr.isr_intr = mgnsc_dmaintr;
+	sc->sc_isr.isr_arg = sc;
+	sc->sc_isr.isr_ipl = 6;
+	add_isr (&sc->sc_isr);
+
+	/*
+	 * attach all scsi units on us
+	 */
+	config_found(dp, &sc->sc_link, mgnscprint);
+}
+
+/*
+ * print diag if pnp is NULL else just extra
+ */
+int
+mgnscprint(auxp, pnp)
+	void *auxp;
+	char *pnp;
+{
+	if (pnp == NULL)
+		return(UNCONF);
+	return(QUIET);
+}
+
+/*
+ * Level 6 interrupt processing for the Magnum/40 SCSI. Because the
+ * level 6 interrupt is above splbio, the interrupt status is saved
+ * and an sicallback to the level 2 interrupt handler scheduled.
+ * This way, the actual processing of the interrupt can be deferred
+ * until splbio is unblocked.
+ */
+
+int
+mgnsc_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;
+	/*
+	 * disable interrupts until the callback can process this
+	 * interrupt.
+	 */
+	rp->siop_sien = 0;
+	rp->siop_dien = 0;
+	sc->sc_flags |= SIOP_INTDEFER | SIOP_INTSOFF;
+	add_sicallback((sifunc_t)siopintr, sc, NULL);
+	return (1);
+}
+
+#ifdef DEBUG
+void
+mgnsc_dump()
+{
+	int i;
+
+	for (i = 0; i < mgnsccd.cd_ndevs; ++i)
+		if (mgnsccd.cd_devs[i])
+			siop_dump(mgnsccd.cd_devs[i]);
+}
+#endif