1 files changed, 281 insertions, 0 deletions
diff --git a/sys/dev/sbus/dma_sbus.c b/sys/dev/sbus/dma_sbus.c
new file mode 100644
index 00000000000..2b435244a42
--- /dev/null
+++ b/sys/dev/sbus/dma_sbus.c
@@ -0,0 +1,281 @@
+/*	$NetBSD: dma_sbus.c,v 1.5 2000/07/09 20:57:42 pk Exp $ */
+
+/*-
+ * Copyright (c) 1998 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Paul Kranenburg.
+ *
+ * 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 NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+/*
+ * Copyright (c) 1994 Peter Galbavy.  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 Peter Galbavy.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/errno.h>
+#include <sys/device.h>
+#include <sys/malloc.h>
+
+#include <machine/bus.h>
+#include <machine/intr.h>
+#include <machine/autoconf.h>
+
+#include <dev/sbus/sbusvar.h>
+
+#include <dev/ic/lsi64854reg.h>
+#include <dev/ic/lsi64854var.h>
+
+#include <scsi/scsi_all.h>
+#include <scsi/scsiconf.h>
+
+#include <dev/ic/ncr53c9xreg.h>
+#include <dev/ic/ncr53c9xvar.h>
+
+struct dma_softc {
+	struct lsi64854_softc	sc_lsi64854;	/* base device */
+	struct sbusdev	sc_sd;			/* sbus device */
+};
+
+int	dmamatch_sbus	__P((struct device *, void *, void *));
+void	dmaattach_sbus	__P((struct device *, struct device *, void *));
+
+int	dmaprint_sbus	__P((void *, const char *));
+
+void	*dmabus_intr_establish __P((
+		bus_space_tag_t,
+		int,			/*bus interrupt priority*/
+		int,			/*`device class' level*/
+		int,			/*flags*/
+		int (*) __P((void *)),	/*handler*/
+		void *));		/*handler arg*/
+
+static	bus_space_tag_t dma_alloc_bustag __P((struct dma_softc *sc));
+
+struct cfattach dma_sbus_ca = {
+	sizeof(struct dma_softc), dmamatch_sbus, dmaattach_sbus
+};
+
+struct cfattach ledma_ca = {
+	sizeof(struct dma_softc), dmamatch_sbus, dmaattach_sbus
+};
+
+struct cfdriver ledma_cd = {
+	NULL, "ledma", DV_DULL
+};
+
+int
+dmaprint_sbus(aux, busname)
+	void *aux;
+	const char *busname;
+{
+	struct sbus_attach_args *sa = aux;
+	bus_space_tag_t t = sa->sa_bustag;
+	struct dma_softc *sc = t->cookie;
+
+	sa->sa_bustag = sc->sc_lsi64854.sc_bustag;	/* XXX */
+	sbus_print(aux, busname);	/* XXX */
+	sa->sa_bustag = t;		/* XXX */
+	return (UNCONF);
+}
+
+int
+dmamatch_sbus(parent, vcf, aux)
+	struct device *parent;
+	void *vcf;
+	void *aux;
+{
+	struct cfdata *cf = vcf;
+	struct sbus_attach_args *sa = aux;
+
+	return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0 ||
+		strcmp("espdma", sa->sa_name) == 0);
+}
+
+void
+dmaattach_sbus(parent, self, aux)
+	struct device *parent, *self;
+	void *aux;
+{
+	struct sbus_attach_args *sa = aux;
+	struct dma_softc *dsc = (void *)self;
+	struct lsi64854_softc *sc = &dsc->sc_lsi64854;
+	bus_space_handle_t bh;
+	bus_space_tag_t sbt;
+	int sbusburst, burst;
+	int node;
+
+	node = sa->sa_node;
+
+	sc->sc_bustag = sa->sa_bustag;
+	sc->sc_dmatag = sa->sa_dmatag;
+
+	/* Map registers */
+	if (sa->sa_npromvaddrs != 0)
+		sc->sc_regs = (bus_space_handle_t)sa->sa_promvaddrs[0];
+	else {
+		if (sbus_bus_map(sa->sa_bustag, sa->sa_slot,
+				 sa->sa_offset,
+				 sa->sa_size,
+				 0, 0, &bh) != 0) {
+			printf("%s: cannot map registers\n", self->dv_xname);
+			return;
+		}
+		sc->sc_regs = bh;
+	}
+
+	/*
+	 * Get transfer burst size from PROM and plug it into the
+	 * controller registers. This is needed on the Sun4m; do
+	 * others need it too?
+	 */
+	sbusburst = ((struct sbus_softc *)parent)->sc_burst;
+	if (sbusburst == 0)
+		sbusburst = SBUS_BURST_32 - 1; /* 1->16 */
+
+	burst = getpropint(node,"burst-sizes", -1);
+	if (burst == -1)
+		/* take SBus burst sizes */
+		burst = sbusburst;
+
+	/* Clamp at parent's burst sizes */
+	burst &= sbusburst;
+	sc->sc_burst = (burst & SBUS_BURST_32) ? 32 :
+		       (burst & SBUS_BURST_16) ? 16 : 0;
+
+	if (sc->sc_dev.dv_cfdata->cf_attach == &ledma_ca) {
+		char *cabletype;
+		u_int32_t csr;
+		/*
+		 * Check to see which cable type is currently active and
+		 * set the appropriate bit in the ledma csr so that it
+		 * gets used. If we didn't netboot, the PROM won't have
+		 * the "cable-selection" property; default to TP and then
+		 * the user can change it via a "media" option to ifconfig.
+		 */
+		cabletype = getpropstring(node, "cable-selection");
+		csr = L64854_GCSR(sc);
+		if (strcmp(cabletype, "tpe") == 0) {
+			csr |= E_TP_AUI;
+		} else if (strcmp(cabletype, "aui") == 0) {
+			csr &= ~E_TP_AUI;
+		} else {
+			/* assume TP if nothing there */
+			csr |= E_TP_AUI;
+		}
+		L64854_SCSR(sc, csr);
+		delay(20000);	/* manual says we need a 20ms delay */
+		sc->sc_channel = L64854_CHANNEL_ENET;
+	} else {
+		sc->sc_channel = L64854_CHANNEL_SCSI;
+	}
+
+	sbus_establish(&dsc->sc_sd, &sc->sc_dev);
+	sbt = dma_alloc_bustag(dsc);
+	lsi64854_attach(sc);
+
+	/* Attach children */
+	for (node = firstchild(sa->sa_node); node; node = nextsibling(node)) {
+		struct sbus_attach_args sa;
+		sbus_setup_attach_args((struct sbus_softc *)parent,
+				       sbt, sc->sc_dmatag, node, &sa);
+		(void) config_found(&sc->sc_dev, (void *)&sa, dmaprint_sbus);
+		sbus_destroy_attach_args(&sa);
+	}
+}
+
+void *
+dmabus_intr_establish(t, pri, level, flags, handler, arg)
+	bus_space_tag_t t;
+	int pri;
+	int level;
+	int flags;
+	int (*handler) __P((void *));
+	void *arg;
+{
+	struct lsi64854_softc *sc = t->cookie;
+
+	/* XXX - for now only le; do esp later */
+	if (sc->sc_channel == L64854_CHANNEL_ENET) {
+		sc->sc_intrchain = handler;
+		sc->sc_intrchainarg = arg;
+		handler = lsi64854_enet_intr;
+		arg = sc;
+	}
+	return (bus_intr_establish(sc->sc_bustag, pri, level, flags,
+				   handler, arg));
+}
+
+bus_space_tag_t
+dma_alloc_bustag(sc)
+	struct dma_softc *sc;
+{
+	bus_space_tag_t sbt;
+
+	sbt = (bus_space_tag_t)
+		malloc(sizeof(struct sparc_bus_space_tag), M_DEVBUF, M_NOWAIT);
+	if (sbt == NULL)
+		return (NULL);
+
+	bzero(sbt, sizeof *sbt);
+	sbt->cookie = sc;
+	sbt->parent = sc->sc_lsi64854.sc_bustag;
+	sbt->sparc_intr_establish = dmabus_intr_establish;
+	return (sbt);
+}