1/*-
2 * Copyright 2002 by Peter Grehan. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.

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19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: head/sys/powerpc/psim/iobus.c 174782 2007-12-19 18:00:50Z marcel $
28 */
29
30/*
31 * PSIM 'iobus' local bus. Should be set up in the device tree like:
32 *
33 * /iobus@0x80000000/name psim-iobus
34 *
35 * Code borrowed from various nexus.c and uninorth.c :-)

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306static struct resource *
307iobus_alloc_resource(device_t bus, device_t child, int type, int *rid,
308 u_long start, u_long end, u_long count, u_int flags)
309{
310 struct iobus_softc *sc;
311 int needactivate;
312 struct resource *rv;
313 struct rman *rm;
314
315 sc = device_get_softc(bus);
316
317 needactivate = flags & RF_ACTIVE;
318 flags &= ~RF_ACTIVE;
319
320 switch (type) {
321 case SYS_RES_MEMORY:
322 case SYS_RES_IOPORT:
323 rm = &sc->sc_mem_rman;
324 break;
325 case SYS_RES_IRQ:
326 return (bus_alloc_resource(bus, type, rid, start, end, count,
327 flags));
328 default:
329 device_printf(bus, "unknown resource request from %s\n",
330 device_get_nameunit(child));
331 return (NULL);
332 }
333
334 rv = rman_reserve_resource(rm, start, end, count, flags, child);
335 if (rv == NULL) {
336 device_printf(bus, "failed to reserve resource for %s\n",
337 device_get_nameunit(child));
338 return (NULL);
339 }
340
341 rman_set_rid(rv, *rid);
342 rman_set_bustag(rv, &bs_le_tag);
343 rman_set_bushandle(rv, rman_get_start(rv));
344
345 if (needactivate) {
346 if (bus_activate_resource(child, type, *rid, rv) != 0) {
347 device_printf(bus,
348 "failed to activate resource for %s\n",
349 device_get_nameunit(child));
350 rman_release_resource(rv);

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