Driver for the BootBus Controller; sets some magic bits that makes pmc(4)

actually work.

1 files changed, 99 insertions, 0 deletions

diff --git a/sys/arch/sparc64/dev/bbc.c b/sys/arch/sparc64/dev/bbc.c
new file mode 100644
index 00000000000..88aa119d006
--- /dev/null
+++ b/sys/arch/sparc64/dev/bbc.c
@@ -0,0 +1,99 @@
+/*	$OpenBSD: bbc.c,v 1.1 2007/04/10 19:05:52 kettenis Exp $	*/
+
+/*
+ * Copyright (c) 2007 Mark Kettenis
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/device.h>
+#include <sys/malloc.h>
+#include <sys/systm.h>
+
+#include <machine/bus.h>
+#include <machine/autoconf.h>
+
+#include <sparc64/dev/ebusreg.h>
+#include <sparc64/dev/ebusvar.h>
+
+/* Watchdog Action */
+#define BBC_WATCHDOG_ACTION	0x00004
+
+/* Perform system reset when watchdog timer expires. */
+#define	BBC_WATCHDOG_RESET	0x01
+
+struct bbc_softc {
+	struct device		sc_dv;
+	bus_space_tag_t		sc_iot;
+	bus_space_handle_t	sc_ioh;
+};
+
+int	bbc_match(struct device *, void *, void *);
+void	bbc_attach(struct device *, struct device *, void *);
+
+struct cfattach bbc_ca = {
+	sizeof(struct bbc_softc), bbc_match, bbc_attach
+};
+
+struct cfdriver bbc_cd = {
+	NULL, "bbc", DV_DULL
+};
+
+int
+bbc_match(struct device *parent, void *cf, void *aux)
+{
+	struct ebus_attach_args *ea = aux;
+
+	if (strcmp("bbc", ea->ea_name) == 0)
+		return (1);
+	return (0);
+}
+
+void
+bbc_attach(struct device *parent, struct device *self, void *aux)
+{
+	struct bbc_softc *sc = (void *)self;
+	struct ebus_attach_args *ea = aux;
+
+	/* Use prom address if available, otherwise map it. */
+	if (ea->ea_nvaddrs) {
+		if (bus_space_map(ea->ea_memtag, ea->ea_vaddrs[0], 0,
+		    BUS_SPACE_MAP_PROMADDRESS, &sc->sc_ioh)) {
+			printf(": can't map PROM register space\n");
+			return;
+		}
+		sc->sc_iot = ea->ea_memtag;
+	} else if (ebus_bus_map(ea->ea_iotag, 0,
+	    EBUS_PADDR_FROM_REG(&ea->ea_regs[0]),
+	    ea->ea_regs[0].size, 0, 0, &sc->sc_ioh) == 0) {
+		sc->sc_iot = ea->ea_iotag;
+	} else if (ebus_bus_map(ea->ea_memtag, 0,
+	    EBUS_PADDR_FROM_REG(&ea->ea_regs[0]),
+	    ea->ea_regs[0].size, 0, 0, &sc->sc_ioh) == 0) {
+		sc->sc_iot = ea->ea_memtag;
+	} else {
+		printf("%s: can't map register space\n", self->dv_xname);
+		return;
+	}
+
+	printf("\n");
+
+	/*
+	 * Make sure we actually reset the system when the watchdog
+	 * timer expires.
+	 */
+	bus_space_write_1(sc->sc_iot, sc->sc_ioh,
+	    BBC_WATCHDOG_ACTION, BBC_WATCHDOG_RESET);
+}