2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2003 Jake Burkholder.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/systm.h>
35 #include <sys/kernel.h>
36 #include <sys/malloc.h>
37 #include <sys/module.h>
39 #include <dev/ofw/ofw_bus.h>
40 #include <dev/ofw/ofw_bus_subr.h>
41 #include <dev/ofw/openfirm.h>
43 #include <machine/bus.h>
44 #include <machine/resource.h>
48 #include <sparc64/sbus/ofw_sbus.h>
50 struct central_devinfo {
51 struct ofw_bus_devinfo cdi_obdinfo;
52 struct resource_list cdi_rl;
55 struct central_softc {
57 struct sbus_ranges *sc_ranges;
60 static device_probe_t central_probe;
61 static device_attach_t central_attach;
62 static bus_print_child_t central_print_child;
63 static bus_probe_nomatch_t central_probe_nomatch;
64 static bus_alloc_resource_t central_alloc_resource;
65 static bus_adjust_resource_t central_adjust_resource;
66 static bus_get_resource_list_t central_get_resource_list;
67 static ofw_bus_get_devinfo_t central_get_devinfo;
69 static int central_print_res(struct central_devinfo *);
71 static device_method_t central_methods[] = {
72 /* Device interface */
73 DEVMETHOD(device_probe, central_probe),
74 DEVMETHOD(device_attach, central_attach),
75 DEVMETHOD(device_shutdown, bus_generic_shutdown),
76 DEVMETHOD(device_suspend, bus_generic_suspend),
77 DEVMETHOD(device_resume, bus_generic_resume),
80 DEVMETHOD(bus_print_child, central_print_child),
81 DEVMETHOD(bus_probe_nomatch, central_probe_nomatch),
82 DEVMETHOD(bus_alloc_resource, central_alloc_resource),
83 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
84 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
85 DEVMETHOD(bus_adjust_resource, central_adjust_resource),
86 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
87 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
88 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
89 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
90 DEVMETHOD(bus_get_resource_list, central_get_resource_list),
91 DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str),
93 /* ofw_bus interface */
94 DEVMETHOD(ofw_bus_get_devinfo, central_get_devinfo),
95 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
96 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
97 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
98 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
99 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
104 static driver_t central_driver = {
107 sizeof(struct central_softc),
110 static devclass_t central_devclass;
112 EARLY_DRIVER_MODULE(central, nexus, central_driver, central_devclass, 0, 0,
114 MODULE_DEPEND(fhc, nexus, 1, 1, 1);
115 MODULE_VERSION(central, 1);
118 central_probe(device_t dev)
121 if (strcmp(ofw_bus_get_name(dev), "central") == 0) {
122 device_set_desc(dev, "central");
129 central_attach(device_t dev)
131 struct central_devinfo *cdi;
132 struct sbus_regs *reg;
133 struct central_softc *sc;
140 sc = device_get_softc(dev);
141 node = ofw_bus_get_node(dev);
143 sc->sc_nrange = OF_getprop_alloc(node, "ranges",
144 sizeof(*sc->sc_ranges), (void **)&sc->sc_ranges);
145 if (sc->sc_nrange == -1) {
146 device_printf(dev, "can't get ranges\n");
150 for (child = OF_child(node); child != 0; child = OF_peer(child)) {
151 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO);
152 if (ofw_bus_gen_setup_devinfo(&cdi->cdi_obdinfo, child) != 0) {
156 nreg = OF_getprop_alloc(child, "reg", sizeof(*reg),
159 device_printf(dev, "<%s>: incomplete\n",
160 cdi->cdi_obdinfo.obd_name);
161 ofw_bus_gen_destroy_devinfo(&cdi->cdi_obdinfo);
165 resource_list_init(&cdi->cdi_rl);
166 for (i = 0; i < nreg; i++)
167 resource_list_add(&cdi->cdi_rl, SYS_RES_MEMORY, i,
168 reg[i].sbr_offset, reg[i].sbr_offset +
169 reg[i].sbr_size, reg[i].sbr_size);
171 cdev = device_add_child(dev, NULL, -1);
173 device_printf(dev, "<%s>: device_add_child failed\n",
174 cdi->cdi_obdinfo.obd_name);
175 resource_list_free(&cdi->cdi_rl);
176 ofw_bus_gen_destroy_devinfo(&cdi->cdi_obdinfo);
180 device_set_ivars(cdev, cdi);
183 return (bus_generic_attach(dev));
187 central_adjust_resource(device_t bus __unused, device_t child __unused,
188 int type __unused, struct resource *r __unused, rman_res_t start __unused,
189 rman_res_t end __unused)
196 central_print_child(device_t dev, device_t child)
200 rv = bus_print_child_header(dev, child);
201 rv += central_print_res(device_get_ivars(child));
202 rv += bus_print_child_footer(dev, child);
207 central_probe_nomatch(device_t dev, device_t child)
211 device_printf(dev, "<%s>", ofw_bus_get_name(child));
212 central_print_res(device_get_ivars(child));
213 type = ofw_bus_get_type(child);
214 printf(" type %s (no driver attached)\n",
215 type != NULL ? type : "unknown");
218 static struct resource *
219 central_alloc_resource(device_t bus, device_t child, int type, int *rid,
220 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
222 struct resource_list *rl;
223 struct resource_list_entry *rle;
224 struct central_softc *sc;
225 struct resource *res;
233 isdefault = RMAN_IS_DEFAULT_RANGE(start, end);
234 passthrough = (device_get_parent(child) != bus);
237 rl = BUS_GET_RESOURCE_LIST(bus, child);
238 sc = device_get_softc(bus);
241 return (resource_list_alloc(rl, bus, child, type, rid, start,
245 rle = resource_list_find(rl, type, *rid);
248 if (rle->res != NULL)
249 panic("%s: resource entry is busy", __func__);
252 count = ulmax(count, rle->count);
253 end = ulmax(rle->end, start + count - 1);
256 for (i = 0; i < sc->sc_nrange; i++) {
257 coffset = sc->sc_ranges[i].coffset;
258 cend = coffset + sc->sc_ranges[i].size - 1;
259 if (start >= coffset && end <= cend) {
262 phys = sc->sc_ranges[i].poffset |
263 ((bus_addr_t)sc->sc_ranges[i].pspace << 32);
264 res = bus_generic_alloc_resource(bus, child,
265 type, rid, phys + start, phys + end,
277 static struct resource_list *
278 central_get_resource_list(device_t bus, device_t child)
280 struct central_devinfo *cdi;
282 cdi = device_get_ivars(child);
283 return (&cdi->cdi_rl);
286 static const struct ofw_bus_devinfo *
287 central_get_devinfo(device_t bus, device_t child)
289 struct central_devinfo *cdi;
291 cdi = device_get_ivars(child);
292 return (&cdi->cdi_obdinfo);
296 central_print_res(struct central_devinfo *cdi)
299 return (resource_list_print_type(&cdi->cdi_rl, "mem", SYS_RES_MEMORY,