Add drivers for the central and fhc busses found in enterprise class

UltraSPARCs, and an eeprom attachment for fhc, which allows the date
to be set properly on these machines.  Central is a wierd bus which
seems to only ever have 1 fhc attached to it.   FHC (FireHose Controller)
is another wierd bus with various things on it depending where its attached.
The fhc attached to central has eeprom and zs, and the fhcs which attach
directly to nexus have simm-status, environment and other nodes, none of
which I'll probably ever have documentation for.

Thanks to Ade Lovett for providing access to an 8 cpu e4500.

5 files changed, 664 insertions, 0 deletions

diff --git a/sys/sparc64/fhc/fhc.c b/sys/sparc64/fhc/fhc.c
new file mode 100644
index 0000000..829e21c
--- /dev/null
+++ b/sys/sparc64/fhc/fhc.c
@@ -0,0 +1,299 @@
+/*-
+ * Copyright (c) 2003 Jake Burkholder.
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+
+#include <dev/ofw/openfirm.h>
+
+#include <machine/bus.h>
+#include <machine/bus_common.h>
+#include <machine/resource.h>
+
+#include <sys/rman.h>
+
+#include <sparc64/fhc/fhcreg.h>
+#include <sparc64/fhc/fhcvar.h>
+#include <sparc64/sbus/ofw_sbus.h>
+
+#define	INTIGN(map)	(((map) & INTMAP_IGN_MASK) >> INTMAP_IGN_SHIFT)
+
+struct fhc_devinfo {
+	char			*fdi_name;
+	char			*fdi_type;
+	phandle_t		fdi_node;
+	struct resource_list	fdi_rl;
+};
+
+int
+fhc_probe(device_t dev)
+{
+
+	return (0);
+}
+
+int
+fhc_attach(device_t dev)
+{
+	struct fhc_devinfo *fdi;
+	struct sbus_regs *reg;
+	struct fhc_softc *sc;
+	phandle_t child;
+	phandle_t node;
+	bus_addr_t size;
+	bus_addr_t off;
+	device_t cdev;
+	uint64_t map;
+	char *name;
+	int nreg;
+	int i;
+
+	sc = device_get_softc(dev);
+	node = sc->sc_node;
+
+	sc->sc_ign = bus_space_read_4(sc->sc_bt[FHC_IGN],
+	    sc->sc_bh[FHC_IGN], 0x0);
+	for (i = FHC_FANFAIL; i <= FHC_TOD; i++) {
+		bus_space_write_4(sc->sc_bt[i], sc->sc_bh[i], FHC_ICLR, 0x0);
+		map = bus_space_read_4(sc->sc_bt[i], sc->sc_bh[i], FHC_IMAP);
+		bus_space_write_4(sc->sc_bt[i], sc->sc_bh[i], FHC_IMAP,
+		    map & ~INTMAP_V);
+		if (INTIGN(map) != sc->sc_ign)
+			panic("fhc_attach: map has wrong ign %#lx != %#x",
+			    INTIGN(map), sc->sc_ign);
+	}
+
+	sc->sc_nrange = OF_getprop_alloc(node, "ranges",
+	    sizeof(*sc->sc_ranges), (void **)&sc->sc_ranges);
+	if (sc->sc_nrange == -1) {
+		device_printf(dev, "can't get ranges");
+		return (ENXIO);
+	}
+
+	for (child = OF_child(node); child != 0; child = OF_peer(child)) {
+		if ((OF_getprop_alloc(child, "name", 1, (void **)&name)) == -1)
+			continue;
+		cdev = device_add_child(dev, NULL, -1);
+		if (cdev != NULL) {
+			fdi = malloc(sizeof(*fdi), M_DEVBUF, M_ZERO);
+			fdi->fdi_name = name;
+			fdi->fdi_node = child;
+			OF_getprop_alloc(child, "device_type", 1,
+			    (void **)&fdi->fdi_type);
+			resource_list_init(&fdi->fdi_rl);
+			nreg = OF_getprop_alloc(child, "reg", sizeof(*reg),
+			    (void **)&reg);
+			if (nreg != -1) {
+				for (i = 0; i < nreg; i++) {
+					off = reg[i].sbr_offset;
+					size = reg[i].sbr_size;
+					resource_list_add(&fdi->fdi_rl,
+					    SYS_RES_MEMORY, i, off, off + size,
+					    size);
+				}
+				free(reg, M_OFWPROP);
+			}
+			device_set_ivars(cdev, fdi);
+		} else
+			free(name, M_OFWPROP);
+	}
+
+	return (bus_generic_attach(dev));
+}
+
+int
+fhc_print_child(device_t dev, device_t child)
+{
+	struct fhc_devinfo *fdi;
+	int rv;
+
+	fdi = device_get_ivars(child);
+	rv = bus_print_child_header(dev, child);
+	rv += resource_list_print_type(&fdi->fdi_rl, "mem",
+	    SYS_RES_MEMORY, "%#lx");
+	rv += bus_print_child_footer(dev, child);
+	return (rv);
+}
+
+void
+fhc_probe_nomatch(device_t dev, device_t child)
+{
+	struct fhc_devinfo *fdi;
+
+	fdi = device_get_ivars(child);
+	device_printf(dev, "<%s>", fdi->fdi_name);
+	resource_list_print_type(&fdi->fdi_rl, "mem", SYS_RES_MEMORY, "%#lx");
+	printf(" type %s (no driver attached)\n",
+	    fdi->fdi_type != NULL ? fdi->fdi_type : "unknown");
+}
+
+int
+fhc_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
+{
+	struct fhc_devinfo *fdi;
+
+	if ((fdi = device_get_ivars(child)) == 0)
+		return (ENOENT);
+	switch (which) {
+	case FHC_IVAR_NAME:
+		*result = (uintptr_t)fdi->fdi_name;
+		break;
+	case FHC_IVAR_NODE:
+		*result = fdi->fdi_node;
+		break;
+	case FHC_IVAR_TYPE:
+		*result = (uintptr_t)fdi->fdi_type;
+		break;
+	default:
+		return (ENOENT);
+	}
+	return (0);
+}
+
+int
+fhc_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
+{
+	struct fhc_devinfo *fdi;
+
+	if ((fdi = device_get_ivars(child)) == 0)
+		return (ENOENT);
+	switch (which) {
+	case FHC_IVAR_NAME:
+	case FHC_IVAR_NODE:
+	case FHC_IVAR_TYPE:
+		return (EINVAL);
+	default:
+		return (ENOENT);
+	}
+	return (0);
+}
+
+int
+fhc_setup_intr(device_t bus, device_t child, struct resource *r, int flags,
+    driver_intr_t intr, void *arg, void **cookiep)
+{
+
+	return (bus_generic_setup_intr(bus, child, r, flags, intr, arg,
+	    cookiep));
+}
+
+int
+fhc_teardown_intr(device_t bus, device_t child, struct resource *r,
+    void *cookie)
+{
+
+	return (bus_generic_teardown_intr(bus, child, r, cookie));
+}
+
+struct resource *
+fhc_alloc_resource(device_t bus, device_t child, int type, int *rid,
+    u_long start, u_long end, u_long count, u_int flags)
+{
+	struct resource_list_entry *rle;
+	struct fhc_devinfo *fdi;
+	struct fhc_softc *sc;
+	struct resource *res;
+	bus_addr_t coffset;
+	bus_addr_t cend;
+	bus_addr_t phys;
+	int isdefault;
+	uint64_t map;
+	int i;
+
+	isdefault = (start == 0UL && end == ~0UL);
+	res = NULL;
+	sc = device_get_softc(bus);
+	switch (type) {
+	case SYS_RES_IRQ:
+		if (!isdefault || count != 1 || *rid < FHC_FANFAIL ||
+		    *rid > FHC_TOD)
+			break;
+		map = bus_space_read_4(sc->sc_bt[*rid], sc->sc_bh[*rid],
+		    FHC_IMAP);
+		res = bus_generic_alloc_resource(bus, child, type, rid,
+		    INTVEC(map), INTVEC(map), 1, flags);
+		if (res != NULL)
+			rman_set_rid(res, *rid);
+		break;
+	case SYS_RES_MEMORY:
+		fdi = device_get_ivars(child);
+		rle = resource_list_find(&fdi->fdi_rl, type, *rid);
+		if (rle == NULL)
+			return (NULL);
+		if (rle->res != NULL)
+			panic("fhc_alloc_resource: resource entry is busy");
+		if (isdefault) {
+			start = rle->start;
+			count = ulmax(count, rle->count);
+			end = ulmax(rle->end, start + count - 1);
+		}
+		for (i = 0; i < sc->sc_nrange; i++) {
+			coffset = sc->sc_ranges[i].coffset;
+			cend = coffset + sc->sc_ranges[i].size - 1;
+			if (start >= coffset && end <= cend) {
+				start -= coffset;
+				end -= coffset;
+				phys = sc->sc_ranges[i].poffset |
+				    ((bus_addr_t)sc->sc_ranges[i].pspace << 32);
+				res = bus_generic_alloc_resource(bus, child,
+				    type, rid, phys + start, phys + end,
+				    count, flags);
+				rle->res = res;
+				break;
+			}
+		}
+		break;
+	default:
+		break;
+	}
+	return (res);
+}
+
+int
+fhc_release_resource(device_t bus, device_t child, int type, int rid,
+    struct resource *r)
+{
+	struct resource_list_entry *rle;
+	struct fhc_devinfo *fdi;
+	int error;
+
+	error = bus_generic_release_resource(bus, child, type, rid, r);
+	if (error != 0)
+		return (error);
+	fdi = device_get_ivars(child);
+	rle = resource_list_find(&fdi->fdi_rl, type, rid);
+	if (rle == NULL)
+		panic("fhc_release_resource: can't find resource");
+	if (rle->res == NULL)
+		panic("fhc_release_resource: resource entry is not busy");
+	rle->res = NULL;
+	return (error);
+}
diff --git a/sys/sparc64/fhc/fhc_central.c b/sys/sparc64/fhc/fhc_central.c
new file mode 100644
index 0000000..a1daee9
--- /dev/null
+++ b/sys/sparc64/fhc/fhc_central.c
@@ -0,0 +1,125 @@
+/*-
+ * Copyright (c) 2003 Jake Burkholder.
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+
+#include <dev/ofw/openfirm.h>
+
+#include <machine/bus.h>
+#include <machine/resource.h>
+
+#include <sys/rman.h>
+
+#include <sparc64/central/centralvar.h>
+#include <sparc64/fhc/fhcreg.h>
+#include <sparc64/fhc/fhcvar.h>
+#include <sparc64/sbus/ofw_sbus.h>
+
+static int fhc_central_probe(device_t dev);
+static int fhc_central_attach(device_t dev);
+
+static device_method_t fhc_central_methods[] = {
+	/* Device interface. */
+	DEVMETHOD(device_probe,		fhc_central_probe),
+	DEVMETHOD(device_attach,	fhc_central_attach),
+
+	/* Bus interface. */
+	DEVMETHOD(bus_print_child,	fhc_print_child),
+	DEVMETHOD(bus_probe_nomatch,	fhc_probe_nomatch),
+	DEVMETHOD(bus_read_ivar,	fhc_read_ivar),
+	DEVMETHOD(bus_write_ivar,	fhc_write_ivar),
+	DEVMETHOD(bus_setup_intr,	fhc_setup_intr),
+	DEVMETHOD(bus_teardown_intr,	fhc_teardown_intr),
+	DEVMETHOD(bus_alloc_resource,	fhc_alloc_resource),
+	DEVMETHOD(bus_release_resource,	fhc_release_resource),
+	DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
+	DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
+
+	{ NULL, NULL }
+};
+
+static driver_t fhc_central_driver = {
+	"fhc",
+	fhc_central_methods,
+	sizeof(struct fhc_softc),
+};
+
+static devclass_t fhc_central_devclass;
+
+DRIVER_MODULE(fhc, central, fhc_central_driver, fhc_central_devclass, 0, 0);
+
+static int
+fhc_central_probe(device_t dev)
+{
+
+	if (strcmp(central_get_name(dev), "fhc") == 0) {
+		device_set_desc(dev, "fhc");
+		return (fhc_probe(dev));
+	}
+	return (ENXIO);
+}
+
+static int
+fhc_central_attach(device_t dev)
+{
+	struct sbus_regs *reg;
+	struct fhc_softc *sc;
+	bus_addr_t size;
+	bus_addr_t off;
+	phandle_t node;
+	int nreg;
+	int rid;
+	int i;
+
+	sc = device_get_softc(dev);
+	node = central_get_node(dev);
+	sc->sc_node = node;
+
+	nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)&reg);
+	if (nreg != FHC_NREG) {
+		device_printf(dev, "can't get registers");
+		return (ENXIO);
+	}
+	for (i = 0; i < nreg; i++) {
+		off = reg[i].sbr_offset;
+		size = reg[i].sbr_size;
+		rid = 0;
+		sc->sc_memres[i] = bus_alloc_resource(dev, SYS_RES_MEMORY,
+		    &rid, off, off + size - 1, size, RF_ACTIVE);
+		if (sc->sc_memres[i] == NULL)
+			panic("fhc_central_attach: can't allocate registers");
+		sc->sc_bt[i] = rman_get_bustag(sc->sc_memres[i]);
+		sc->sc_bh[i] = rman_get_bushandle(sc->sc_memres[i]);
+	}
+	free(reg, M_OFWPROP);
+	return (fhc_attach(dev));
+}
diff --git a/sys/sparc64/fhc/fhc_nexus.c b/sys/sparc64/fhc/fhc_nexus.c
new file mode 100644
index 0000000..e989b5c
--- /dev/null
+++ b/sys/sparc64/fhc/fhc_nexus.c
@@ -0,0 +1,125 @@
+/*-
+ * Copyright (c) 2003 Jake Burkholder.
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+
+#include <dev/ofw/openfirm.h>
+
+#include <machine/bus.h>
+#include <machine/ofw_upa.h>
+#include <machine/nexusvar.h>
+#include <machine/resource.h>
+
+#include <sys/rman.h>
+
+#include <sparc64/fhc/fhcreg.h>
+#include <sparc64/fhc/fhcvar.h>
+
+static int fhc_nexus_probe(device_t dev);
+static int fhc_nexus_attach(device_t dev);
+
+static device_method_t fhc_nexus_methods[] = {
+	/* Device interface. */
+	DEVMETHOD(device_probe,		fhc_nexus_probe),
+	DEVMETHOD(device_attach,	fhc_nexus_attach),
+
+	/* Bus interface. */
+	DEVMETHOD(bus_print_child,	fhc_print_child),
+	DEVMETHOD(bus_probe_nomatch,	fhc_probe_nomatch),
+	DEVMETHOD(bus_read_ivar,	fhc_read_ivar),
+	DEVMETHOD(bus_write_ivar,	fhc_write_ivar),
+	DEVMETHOD(bus_setup_intr,	fhc_setup_intr),
+	DEVMETHOD(bus_teardown_intr,	fhc_teardown_intr),
+	DEVMETHOD(bus_alloc_resource,	fhc_alloc_resource),
+	DEVMETHOD(bus_release_resource,	fhc_release_resource),
+	DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
+	DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
+
+	{ NULL, NULL }
+};
+
+static driver_t fhc_nexus_driver = {
+	"fhc",
+	fhc_nexus_methods,
+	sizeof(struct fhc_softc),
+};
+
+static devclass_t fhc_nexus_devclass;
+
+DRIVER_MODULE(fhc, nexus, fhc_nexus_driver, fhc_nexus_devclass, 0, 0);
+
+static int
+fhc_nexus_probe(device_t dev)
+{
+
+	if (strcmp(nexus_get_name(dev), "fhc") == 0) {
+		device_set_desc(dev, "fhc");
+		return (fhc_probe(dev));
+	}
+	return (ENXIO);
+}
+
+static int
+fhc_nexus_attach(device_t dev)
+{
+	struct fhc_softc *sc;
+	struct upa_regs *reg;
+	bus_addr_t phys;
+	bus_addr_t size;
+	phandle_t node;
+	int nreg;
+	int rid;
+	int i;
+
+	sc = device_get_softc(dev);
+	node = nexus_get_node(dev);
+	sc->sc_node = node;
+
+	reg = nexus_get_reg(dev);
+	nreg = nexus_get_nreg(dev);
+	if (nreg != FHC_NREG) {
+		device_printf(dev, "wrong number of regs");
+		return (ENXIO);
+	}
+	for (i = 0; i < nreg; i++) {
+		phys = UPA_REG_PHYS(reg + i);
+		size = UPA_REG_SIZE(reg + i);
+		rid = 0;
+		sc->sc_memres[i] = bus_alloc_resource(dev, SYS_RES_MEMORY,
+		    &rid, phys, phys + size - 1, size, RF_ACTIVE);
+		if (sc->sc_memres[i] == NULL)
+			panic("fhc_nexus_attach: can't allocate registers");
+		sc->sc_bt[i] = rman_get_bustag(sc->sc_memres[i]);
+		sc->sc_bh[i] = rman_get_bushandle(sc->sc_memres[i]);
+	}
+	return (fhc_attach(dev));
+}
diff --git a/sys/sparc64/fhc/fhcreg.h b/sys/sparc64/fhc/fhcreg.h
new file mode 100644
index 0000000..f8801e2
--- /dev/null
+++ b/sys/sparc64/fhc/fhcreg.h
@@ -0,0 +1,44 @@
+/*-
+ * Copyright (c) 2003 Jake Burkholder.
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _SPARC64_FHC_FHCREG_H_
+#define	_SPARC64_FHC_FHCREG_H_
+
+#define	FHC_NREG	(6)
+
+#define	FHC_INTERNAL	(0)
+#define	FHC_IGN		(1)
+#define	FHC_FANFAIL	(2)
+#define	FHC_SYSTEM	(3)
+#define	FHC_UART	(4)
+#define	FHC_TOD		(5)
+
+#define	FHC_IMAP	0x0
+#define	FHC_ICLR	0x10
+
+#endif
diff --git a/sys/sparc64/fhc/fhcvar.h b/sys/sparc64/fhc/fhcvar.h
new file mode 100644
index 0000000..b8662df
--- /dev/null
+++ b/sys/sparc64/fhc/fhcvar.h
@@ -0,0 +1,71 @@
+/*-
+ * Copyright (c) 2003 Jake Burkholder.
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _SPARC64_FHC_FHCVAR_H_
+#define	_SPARC64_FHC_FHCVAR_H_
+
+enum fhc_device_ivars {
+	FHC_IVAR_NAME,
+	FHC_IVAR_NODE,
+	FHC_IVAR_TYPE
+};
+
+struct fhc_softc {
+	phandle_t		sc_node;
+	struct resource *	sc_memres[FHC_NREG];
+	bus_space_handle_t	sc_bh[FHC_NREG];
+	bus_space_tag_t		sc_bt[FHC_NREG];
+	int			sc_nrange;
+	struct sbus_ranges	*sc_ranges;
+	int			sc_ign;
+};
+
+int fhc_probe(device_t dev);
+int fhc_attach(device_t dev);
+
+int fhc_print_child(device_t dev, device_t child);
+void fhc_probe_nomatch(device_t dev, device_t child);
+int fhc_read_ivar(device_t, device_t, int, uintptr_t *);
+int fhc_write_ivar(device_t, device_t, int, uintptr_t);
+int fhc_setup_intr(device_t, device_t, struct resource *, int, driver_intr_t,
+    void *, void **);
+int fhc_teardown_intr(device_t, device_t, struct resource *, void *);
+struct resource *fhc_alloc_resource(device_t, device_t, int, int *, u_long,
+    u_long, u_long, u_int);
+int fhc_release_resource(device_t, device_t, int, int, struct resource *);
+
+#define	FHC_ACCESSOR(var, ivar, type) \
+	__BUS_ACCESSOR(fhc, var, FHC, ivar, type)
+
+FHC_ACCESSOR(name,	NAME,	char *)
+FHC_ACCESSOR(node,	NODE,	phandle_t)
+FHC_ACCESSOR(type,	TYPE,	char *)
+
+#undef FHC_ACCESSOR
+
+#endif