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 "fdt_ic_if.h"
51 #include "ofw_bus_if.h"
54 #define debugf(fmt, args...) do { printf("%s(): ", __func__); \
55 printf(fmt,##args); } while (0)
57 #define debugf(fmt, args...)
60 static MALLOC_DEFINE(M_SIMPLEBUS, "simplebus", "simplebus devices information");
62 struct simplebus_softc {
67 struct simplebus_devinfo {
68 struct ofw_bus_devinfo di_ofw;
69 struct resource_list di_res;
71 /* Interrupts sense-level info for this device */
72 struct fdt_sense_level di_intr_sl[DI_MAX_INTR_NUM];
78 static int simplebus_probe(device_t);
79 static int simplebus_attach(device_t);
81 static int simplebus_print_child(device_t, device_t);
82 static int simplebus_setup_intr(device_t, device_t, struct resource *, int,
83 driver_filter_t *, driver_intr_t *, void *, void **);
84 static int simplebus_teardown_intr(device_t, device_t, struct resource *,
87 static int simplebus_activate_resource(device_t, device_t, int, int,
89 static struct resource *simplebus_alloc_resource(device_t, device_t, int,
90 int *, u_long, u_long, u_long, u_int);
91 static int simplebus_deactivate_resource(device_t, device_t, int, int,
93 static int simplebus_release_resource(device_t, device_t, int, int,
95 static device_t simplebus_get_interrupt_parent(device_t);
96 static struct resource_list *simplebus_get_resource_list(device_t, device_t);
98 static ofw_bus_get_devinfo_t simplebus_get_devinfo;
101 * Bus interface definition.
103 static device_method_t simplebus_methods[] = {
104 /* Device interface */
105 DEVMETHOD(device_probe, simplebus_probe),
106 DEVMETHOD(device_attach, simplebus_attach),
107 DEVMETHOD(device_detach, bus_generic_detach),
108 DEVMETHOD(device_shutdown, bus_generic_shutdown),
109 DEVMETHOD(device_suspend, bus_generic_suspend),
110 DEVMETHOD(device_resume, bus_generic_resume),
113 DEVMETHOD(bus_print_child, simplebus_print_child),
114 DEVMETHOD(bus_alloc_resource, simplebus_alloc_resource),
115 DEVMETHOD(bus_release_resource, simplebus_release_resource),
116 DEVMETHOD(bus_activate_resource, simplebus_activate_resource),
117 DEVMETHOD(bus_deactivate_resource, simplebus_deactivate_resource),
118 DEVMETHOD(bus_setup_intr, simplebus_setup_intr),
119 DEVMETHOD(bus_teardown_intr, simplebus_teardown_intr),
120 DEVMETHOD(bus_get_resource_list, simplebus_get_resource_list),
122 /* OFW bus interface */
123 DEVMETHOD(ofw_bus_get_devinfo, simplebus_get_devinfo),
124 DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
125 DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
126 DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
127 DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
128 DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
133 static driver_t simplebus_driver = {
136 sizeof(struct simplebus_softc)
139 devclass_t simplebus_devclass;
141 DRIVER_MODULE(simplebus, fdtbus, simplebus_driver, simplebus_devclass, 0, 0);
142 DRIVER_MODULE(simplebus, simplebus, simplebus_driver, simplebus_devclass, 0,
146 simplebus_probe(device_t dev)
149 if (!ofw_bus_is_compatible(dev, "simple-bus"))
152 device_set_desc(dev, "Flattened device tree simple bus");
154 return (BUS_PROBE_GENERIC);
158 simplebus_attach(device_t dev)
161 struct simplebus_devinfo *di;
162 struct simplebus_softc *sc;
163 phandle_t dt_node, dt_child;
165 sc = device_get_softc(dev);
168 * Walk simple-bus and add direct subordinates as our children.
170 dt_node = ofw_bus_get_node(dev);
171 for (dt_child = OF_child(dt_node); dt_child != 0;
172 dt_child = OF_peer(dt_child)) {
174 /* Check and process 'status' property. */
175 if (!(fdt_is_enabled(dt_child)))
178 if (!(fdt_pm_is_enabled(dt_child)))
181 di = malloc(sizeof(*di), M_SIMPLEBUS, M_WAITOK | M_ZERO);
183 if (ofw_bus_gen_setup_devinfo(&di->di_ofw, dt_child) != 0) {
184 free(di, M_SIMPLEBUS);
185 device_printf(dev, "could not set up devinfo\n");
189 resource_list_init(&di->di_res);
190 if (fdt_reg_to_rl(dt_child, &di->di_res)) {
192 "%s: could not process 'reg' "
193 "property\n", di->di_ofw.obd_name);
194 ofw_bus_gen_destroy_devinfo(&di->di_ofw);
195 free(di, M_SIMPLEBUS);
199 if (fdt_intr_to_rl(dt_child, &di->di_res, di->di_intr_sl)) {
200 device_printf(dev, "%s: could not process "
201 "'interrupts' property\n", di->di_ofw.obd_name);
202 resource_list_free(&di->di_res);
203 ofw_bus_gen_destroy_devinfo(&di->di_ofw);
204 free(di, M_SIMPLEBUS);
208 /* Add newbus device for this FDT node */
209 dev_child = device_add_child(dev, NULL, -1);
210 if (dev_child == NULL) {
211 device_printf(dev, "could not add child: %s\n",
212 di->di_ofw.obd_name);
213 resource_list_free(&di->di_res);
214 ofw_bus_gen_destroy_devinfo(&di->di_ofw);
215 free(di, M_SIMPLEBUS);
219 device_printf(dev, "added child: %s\n\n", di->di_ofw.obd_name);
221 device_set_ivars(dev_child, di);
224 return (bus_generic_attach(dev));
228 simplebus_print_child(device_t dev, device_t child)
231 struct simplebus_devinfo *di;
232 struct resource_list *rl;
235 di = device_get_ivars(child);
239 rv += bus_print_child_header(dev, child);
240 rv += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
241 rv += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
242 if ((ip = simplebus_get_interrupt_parent(child)) != NULL)
243 rv += printf(" (%s)", device_get_nameunit(ip));
244 rv += bus_print_child_footer(dev, child);
249 static struct resource *
250 simplebus_alloc_resource(device_t bus, device_t child, int type, int *rid,
251 u_long start, u_long end, u_long count, u_int flags)
254 struct simplebus_devinfo *di;
255 struct resource_list_entry *rle;
258 * Request for the default allocation with a given rid: use resource
259 * list stored in the local device info.
261 if ((start == 0UL) && (end == ~0UL)) {
262 if ((di = device_get_ivars(child)) == NULL)
265 if (type == SYS_RES_IOPORT)
266 type = SYS_RES_MEMORY;
268 rle = resource_list_find(&di->di_res, type, *rid);
271 device_printf(bus, "no default resources for "
272 "rid = %d, type = %d\n", *rid, type);
280 if (type == SYS_RES_IRQ &&
281 (ic = simplebus_get_interrupt_parent(child)) != NULL)
282 return(FDT_IC_ALLOC_INTR(ic, child, rid, start, flags));
284 return (bus_generic_alloc_resource(bus, child, type, rid, start, end,
289 simplebus_activate_resource(device_t dev, device_t child, int type, int rid,
294 if (type == SYS_RES_IRQ &&
295 (ic = simplebus_get_interrupt_parent(child)) != NULL)
296 return (FDT_IC_ACTIVATE_INTR(ic, r));
298 return (bus_generic_activate_resource(dev, child, type, rid, r));
302 simplebus_deactivate_resource(device_t dev, device_t child, int type, int rid,
307 if (type == SYS_RES_IRQ &&
308 (ic = simplebus_get_interrupt_parent(child)) != NULL)
309 return (FDT_IC_DEACTIVATE_INTR(ic, r));
311 return (bus_generic_deactivate_resource(dev, child, type, rid, r));
315 simplebus_release_resource(device_t dev, device_t child, int type, int rid,
320 if (type == SYS_RES_IRQ &&
321 (ic = simplebus_get_interrupt_parent(child)) != NULL)
322 return (FDT_IC_RELEASE_INTR(ic, r));
324 return (bus_generic_release_resource(dev, child, type, rid, r));
327 static struct resource_list *
328 simplebus_get_resource_list(device_t bus, device_t child)
330 struct simplebus_devinfo *di;
332 di = device_get_ivars(child);
333 return (&di->di_res);
337 simplebus_get_interrupt_parent(device_t dev)
339 struct simplebus_devinfo *di;
347 di = device_get_ivars(dev);
351 if (OF_getprop(di->di_ofw.obd_node, "interrupt-parent", &iph,
353 iph = fdt32_to_cpu(iph);
354 ph = OF_instance_to_package(iph);
355 SLIST_FOREACH(ic, &fdt_ic_list_head, fdt_ics) {
366 simplebus_setup_intr(device_t bus, device_t child, struct resource *res,
367 int flags, driver_filter_t *filter, driver_intr_t *ihand, void *arg,
370 struct simplebus_devinfo *di;
372 enum intr_trigger trig;
373 enum intr_polarity pol;
376 di = device_get_ivars(child);
383 rid = rman_get_rid(res);
384 if (rid >= DI_MAX_INTR_NUM)
387 ic = simplebus_get_interrupt_parent(child);
389 trig = di->di_intr_sl[rid].trig;
390 pol = di->di_intr_sl[rid].pol;
391 if (trig != INTR_TRIGGER_CONFORM || pol != INTR_POLARITY_CONFORM) {
392 irq = rman_get_start(res);
394 error = FDT_IC_CONFIG_INTR(ic, irq, trig, pol);
396 error = bus_generic_config_intr(bus, irq, trig, pol);
402 error = FDT_IC_SETUP_INTR(ic, child, res, flags, filter,
403 ihand, arg, cookiep);
405 error = bus_generic_setup_intr(bus, child, res, flags, filter,
406 ihand, arg, cookiep);
411 simplebus_teardown_intr(device_t bus, device_t child, struct resource *res,
416 if ((ic = simplebus_get_interrupt_parent(child)) != NULL)
417 return (FDT_IC_TEARDOWN_INTR(ic, child, res, cookie));
419 return (bus_generic_teardown_intr(bus, child, res, cookie));
422 static const struct ofw_bus_devinfo *
423 simplebus_get_devinfo(device_t bus, device_t child)
425 struct simplebus_devinfo *di;
427 di = device_get_ivars(child);
428 return (&di->di_ofw);