2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2007 Bruce M. Simpson.
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
30 * Driver to swallow up memory ranges reserved by CFE platform firmware.
31 * CFE on Sentry5 doesn't specify reserved ranges, so this is not useful
32 * at the present time.
33 * TODO: Don't attach this off nexus.
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/kernel.h>
42 #include <sys/socket.h>
44 #include <sys/module.h>
47 #include <machine/bus.h>
48 #include <machine/resource.h>
51 #include <dev/cfe/cfe_api.h>
52 #include <dev/cfe/cfe_error.h>
54 #define MAX_CFE_RESERVATIONS 16
58 int rid[MAX_CFE_RESERVATIONS];
59 struct resource *res[MAX_CFE_RESERVATIONS];
63 cferes_probe(device_t dev)
66 return (BUS_PROBE_NOWILDCARD);
70 cferes_attach(device_t dev)
77 cferes_identify(driver_t* driver, device_t parent)
84 struct cferes_softc *sc;
85 uint64_t addr, len, type;
87 child = BUS_ADD_CHILD(parent, 100, "cferes", -1);
88 device_set_driver(child, driver);
89 sc = device_get_softc(child);
92 for (i = 0; i < ~0U; i++) {
93 result = cfe_enummem(i, CFE_FLG_FULL_ARENA, &addr, &len, &type);
96 if (type != CFE_MI_RESERVED) {
98 printf("%s: skipping non reserved range 0x%0jx(%jd)\n",
99 device_getnameunit(child),
100 (uintmax_t)addr, (uintmax_t)len);
104 bus_set_resource(child, SYS_RES_MEMORY, sc->rnum, addr, len);
106 res = bus_alloc_resource_any(child, SYS_RES_MEMORY, &rid, 0);
108 bus_delete_resource(child, SYS_RES_MEMORY, sc->rnum);
111 sc->rid[sc->rnum] = rid;
112 sc->res[sc->rnum] = res;
115 if (sc->rnum == MAX_CFE_RESERVATIONS)
120 device_delete_child(parent, child);
124 device_set_desc(child, "CFE reserved memory");
128 cferes_detach(device_t dev)
131 struct cferes_softc *sc = device_get_softc(dev);
133 for (i = 0; i < sc->rnum; i++) {
134 bus_release_resource(dev, SYS_RES_MEMORY, sc->rid[i],
141 static device_method_t cferes_methods[] = {
142 /* Device interface */
143 DEVMETHOD(device_identify, cferes_identify),
144 DEVMETHOD(device_probe, cferes_probe),
145 DEVMETHOD(device_attach, cferes_attach),
146 DEVMETHOD(device_detach, cferes_detach),
147 DEVMETHOD(device_shutdown, bus_generic_shutdown),
148 DEVMETHOD(device_suspend, bus_generic_suspend),
149 DEVMETHOD(device_resume, bus_generic_resume),
153 static driver_t cferes_driver = {
156 sizeof (struct cferes_softc)
159 static devclass_t cferes_devclass;
161 DRIVER_MODULE(cfe, nexus, cferes_driver, cferes_devclass, 0, 0);