2 * Copyright (c) 2009-2010 The FreeBSD Foundation
5 * This software was developed by Semihalf under sponsorship from
6 * the FreeBSD Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
33 #include "opt_platform.h"
34 #include <sys/param.h>
35 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/module.h>
41 #include <sys/malloc.h>
43 #include <machine/fdt.h>
45 #include <dev/ofw/ofw_bus.h>
46 #include <dev/ofw/ofw_bus_subr.h>
47 #include <dev/ofw/openfirm.h>
49 #include "fdt_common.h"
50 #include "ofw_bus_if.h"
56 #define debugf(fmt, args...) do { printf("%s(): ", __func__); \
57 printf(fmt,##args); } while (0)
59 #define debugf(fmt, args...)
62 static MALLOC_DEFINE(M_SIMPLEBUS, "simplebus", "simplebus devices information");
64 struct simplebus_softc {
72 struct simplebus_devinfo {
73 struct ofw_bus_devinfo di_ofw;
74 struct resource_list di_res;
76 /* Interrupts sense-level info for this device */
77 struct fdt_sense_level di_intr_sl[DI_MAX_INTR_NUM];
83 static int simplebus_probe(device_t);
84 static int simplebus_attach(device_t);
86 static int simplebus_print_child(device_t, device_t);
87 static int simplebus_setup_intr(device_t, device_t, struct resource *, int,
88 driver_filter_t *, driver_intr_t *, void *, void **);
90 static struct resource *simplebus_alloc_resource(device_t, device_t, int,
91 int *, u_long, u_long, u_long, u_int);
92 static struct resource_list *simplebus_get_resource_list(device_t, device_t);
94 static ofw_bus_get_devinfo_t simplebus_get_devinfo;
97 * Bus interface definition.
99 static device_method_t simplebus_methods[] = {
100 /* Device interface */
101 DEVMETHOD(device_probe, simplebus_probe),
102 DEVMETHOD(device_attach, simplebus_attach),
103 DEVMETHOD(device_detach, bus_generic_detach),
104 DEVMETHOD(device_shutdown, bus_generic_shutdown),
105 DEVMETHOD(device_suspend, bus_generic_suspend),
106 DEVMETHOD(device_resume, bus_generic_resume),
109 DEVMETHOD(bus_print_child, simplebus_print_child),
110 DEVMETHOD(bus_alloc_resource, simplebus_alloc_resource),
111 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
112 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
113 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
114 DEVMETHOD(bus_setup_intr, simplebus_setup_intr),
115 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
116 DEVMETHOD(bus_get_resource_list, simplebus_get_resource_list),
118 /* OFW bus interface */
119 DEVMETHOD(ofw_bus_get_devinfo, simplebus_get_devinfo),
120 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
121 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
122 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
123 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
124 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
129 static driver_t simplebus_driver = {
132 sizeof(struct simplebus_softc)
135 devclass_t simplebus_devclass;
137 DRIVER_MODULE(simplebus, fdtbus, simplebus_driver, simplebus_devclass, 0, 0);
140 simplebus_probe(device_t dev)
143 if (!ofw_bus_is_compatible_strict(dev, "simple-bus"))
146 device_set_desc(dev, "Flattened device tree simple bus");
148 return (BUS_PROBE_DEFAULT);
152 simplebus_attach(device_t dev)
155 struct simplebus_devinfo *di;
156 struct simplebus_softc *sc;
157 phandle_t dt_node, dt_child;
159 sc = device_get_softc(dev);
161 sc->sc_start_pa = fdt_immr_pa;
162 sc->sc_start_va = fdt_immr_va;
163 sc->sc_size = fdt_immr_size;
166 * Walk simple-bus and add direct subordinates as our children.
168 dt_node = ofw_bus_get_node(dev);
169 for (dt_child = OF_child(dt_node); dt_child != 0;
170 dt_child = OF_peer(dt_child)) {
172 /* Check and process 'status' property. */
173 if (!(fdt_is_enabled(dt_child)))
176 if (!(fdt_pm_is_enabled(dt_child)))
179 di = malloc(sizeof(*di), M_SIMPLEBUS, M_WAITOK | M_ZERO);
181 if (ofw_bus_gen_setup_devinfo(&di->di_ofw, dt_child) != 0) {
182 free(di, M_SIMPLEBUS);
183 device_printf(dev, "could not set up devinfo\n");
187 resource_list_init(&di->di_res);
189 if (fdt_reg_to_rl(dt_child, &di->di_res, sc->sc_start_va)) {
190 device_printf(dev, "%s: could not process 'reg' "
191 "property\n", di->di_ofw.obd_name);
192 ofw_bus_gen_destroy_devinfo(&di->di_ofw);
193 free(di, M_SIMPLEBUS);
197 if (fdt_intr_to_rl(dt_child, &di->di_res, di->di_intr_sl)) {
198 device_printf(dev, "%s: could not process "
199 "'interrupts' property\n", di->di_ofw.obd_name);
200 resource_list_free(&di->di_res);
201 ofw_bus_gen_destroy_devinfo(&di->di_ofw);
202 free(di, M_SIMPLEBUS);
206 /* Add newbus device for this FDT node */
207 dev_child = device_add_child(dev, NULL, -1);
208 if (dev_child == NULL) {
209 device_printf(dev, "could not add child: %s\n",
210 di->di_ofw.obd_name);
211 resource_list_free(&di->di_res);
212 ofw_bus_gen_destroy_devinfo(&di->di_ofw);
213 free(di, M_SIMPLEBUS);
217 device_printf(dev, "added child: %s\n\n", di->di_ofw.obd_name);
219 device_set_ivars(dev_child, di);
222 return (bus_generic_attach(dev));
226 simplebus_print_child(device_t dev, device_t child)
228 struct simplebus_devinfo *di;
229 struct resource_list *rl;
232 di = device_get_ivars(child);
236 rv += bus_print_child_header(dev, child);
237 rv += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
238 rv += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
239 rv += bus_print_child_footer(dev, child);
244 static struct resource *
245 simplebus_alloc_resource(device_t bus, device_t child, int type, int *rid,
246 u_long start, u_long end, u_long count, u_int flags)
248 struct simplebus_devinfo *di;
249 struct resource_list_entry *rle;
252 * Request for the default allocation with a given rid: use resource
253 * list stored in the local device info.
255 if ((start == 0UL) && (end == ~0UL)) {
256 if ((di = device_get_ivars(child)) == NULL)
259 if (type == SYS_RES_IOPORT)
260 type = SYS_RES_MEMORY;
262 rle = resource_list_find(&di->di_res, type, *rid);
264 device_printf(bus, "no default resources for "
265 "rid = %d, type = %d\n", *rid, type);
273 return (bus_generic_alloc_resource(bus, child, type, rid, start, end,
277 static struct resource_list *
278 simplebus_get_resource_list(device_t bus, device_t child)
280 struct simplebus_devinfo *di;
282 di = device_get_ivars(child);
283 return (&di->di_res);
287 simplebus_setup_intr(device_t bus, device_t child, struct resource *res,
288 int flags, driver_filter_t *filter, driver_intr_t *ihand, void *arg,
291 struct simplebus_devinfo *di;
292 enum intr_trigger trig;
293 enum intr_polarity pol;
297 panic("simplebus_setup_intr: NULL irq resource!");
299 rid = rman_get_rid(res);
300 if (rid > DI_MAX_INTR_NUM) {
301 device_printf(child, "rid out of range rid = %d\n", rid);
305 irq = rman_get_start(res);
307 if ((di = device_get_ivars(child)) == NULL) {
308 device_printf(child, "could not retrieve devinfo\n");
312 trig = di->di_intr_sl[rid].trig;
313 pol = di->di_intr_sl[rid].pol;
315 debugf("intr config: irq = %d, trig = %d, pol = %d\n", irq, trig, pol);
317 #if defined(__powerpc__)
320 err = powerpc_config_intr(irq, trig, pol);
325 return (bus_generic_setup_intr(bus, child, res, flags, filter, ihand,
329 static const struct ofw_bus_devinfo *
330 simplebus_get_devinfo(device_t bus, device_t child)
332 struct simplebus_devinfo *di;
334 di = device_get_ivars(child);
335 return (&di->di_ofw);