234 lines
6.3 KiB
C
234 lines
6.3 KiB
C
/*-
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* Copyright (c) 2003 Jake Burkholder.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <dev/ofw/openfirm.h>
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#include <machine/bus.h>
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#include <machine/nexusvar.h>
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#include <machine/ofw_upa.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <sparc64/central/centralvar.h>
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#include <sparc64/sbus/ofw_sbus.h>
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#include <sparc64/sbus/sbusreg.h>
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struct central_devinfo {
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char *cdi_name;
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char *cdi_type;
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phandle_t cdi_node;
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};
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struct central_softc {
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phandle_t sc_node;
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int sc_nrange;
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struct sbus_ranges *sc_ranges;
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};
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static int central_probe(device_t dev);
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static int central_attach(device_t dev);
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static void central_probe_nomatch(device_t dev, device_t child);
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static int central_read_ivar(device_t, device_t, int, uintptr_t *);
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static int central_write_ivar(device_t, device_t, int, uintptr_t);
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static struct resource *central_alloc_resource(device_t, device_t, int, int *,
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u_long, u_long, u_long, u_int);
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static device_method_t central_methods[] = {
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/* Device interface. */
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DEVMETHOD(device_probe, central_probe),
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DEVMETHOD(device_attach, central_attach),
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/* Bus interface. */
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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DEVMETHOD(bus_probe_nomatch, central_probe_nomatch),
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DEVMETHOD(bus_read_ivar, central_read_ivar),
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DEVMETHOD(bus_write_ivar, central_write_ivar),
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DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
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DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
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DEVMETHOD(bus_alloc_resource, central_alloc_resource),
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DEVMETHOD(bus_release_resource, bus_generic_release_resource),
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DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
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DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
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{ NULL, NULL }
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};
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static driver_t central_driver = {
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"central",
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central_methods,
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sizeof(struct central_softc),
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};
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static devclass_t central_devclass;
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DRIVER_MODULE(central, nexus, central_driver, central_devclass, 0, 0);
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static int
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central_probe(device_t dev)
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{
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if (strcmp(nexus_get_name(dev), "central") == 0) {
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device_set_desc(dev, "central");
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return (0);
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}
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return (ENXIO);
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}
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static int
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central_attach(device_t dev)
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{
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struct central_devinfo *cdi;
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struct central_softc *sc;
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phandle_t child;
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phandle_t node;
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device_t cdev;
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char *name;
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sc = device_get_softc(dev);
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node = nexus_get_node(dev);
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sc->sc_node = node;
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sc->sc_nrange = OF_getprop_alloc(node, "ranges",
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sizeof(*sc->sc_ranges), (void **)&sc->sc_ranges);
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if (sc->sc_nrange == -1) {
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device_printf(dev, "can't get ranges");
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return (ENXIO);
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}
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for (child = OF_child(node); child != 0; child = OF_peer(child)) {
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if ((OF_getprop_alloc(child, "name", 1, (void **)&name)) == -1)
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continue;
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cdev = device_add_child(dev, NULL, -1);
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if (cdev != NULL) {
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cdi = malloc(sizeof(*cdi), M_DEVBUF,
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M_WAITOK | M_ZERO);
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cdi->cdi_name = name;
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cdi->cdi_node = child;
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OF_getprop_alloc(child, "device_type", 1,
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(void **)&cdi->cdi_type);
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device_set_ivars(cdev, cdi);
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} else
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free(name, M_OFWPROP);
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}
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return (bus_generic_attach(dev));
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}
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static void
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central_probe_nomatch(device_t dev, device_t child)
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{
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struct central_devinfo *cdi;
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cdi = device_get_ivars(child);
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device_printf(dev, "<%s> type %s (no driver attached)\n",
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cdi->cdi_name, cdi->cdi_type != NULL ? cdi->cdi_type : "unknown");
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}
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static int
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central_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
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{
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struct central_devinfo *cdi;
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if ((cdi = device_get_ivars(child)) == 0)
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return (ENOENT);
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switch (which) {
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case CENTRAL_IVAR_NAME:
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*result = (uintptr_t)cdi->cdi_name;
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break;
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case CENTRAL_IVAR_NODE:
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*result = cdi->cdi_node;
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break;
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case CENTRAL_IVAR_TYPE:
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*result = (uintptr_t)cdi->cdi_type;
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break;
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default:
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return (ENOENT);
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}
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return (0);
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}
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static int
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central_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
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{
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struct central_devinfo *cdi;
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if ((cdi = device_get_ivars(child)) == 0)
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return (ENOENT);
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switch (which) {
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case CENTRAL_IVAR_NAME:
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case CENTRAL_IVAR_NODE:
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case CENTRAL_IVAR_TYPE:
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return (EINVAL);
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default:
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return (ENOENT);
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}
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return (0);
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}
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static struct resource *
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central_alloc_resource(device_t bus, device_t child, int type, int *rid,
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u_long start, u_long end, u_long count, u_int flags)
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{
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struct central_softc *sc;
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struct resource *res;
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bus_addr_t coffset;
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bus_addr_t cend;
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bus_addr_t phys;
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int i;
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if (type != SYS_RES_MEMORY) {
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return (bus_generic_alloc_resource(bus, child, type, rid,
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start, end, count, flags));
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}
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res = NULL;
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sc = device_get_softc(bus);
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for (i = 0; i < sc->sc_nrange; i++) {
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coffset = sc->sc_ranges[i].coffset;
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cend = coffset + sc->sc_ranges[i].size - 1;
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if (start >= coffset && end <= cend) {
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start -= coffset;
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end -= coffset;
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phys = sc->sc_ranges[i].poffset |
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((bus_addr_t)sc->sc_ranges[i].pspace << 32);
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res = bus_generic_alloc_resource(bus, child, type,
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rid, phys + start, phys + end, count, flags);
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break;
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}
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}
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return (res);
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}
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