2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2006 Benno Rice. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
31 #include <sys/systm.h>
33 #include <sys/kernel.h>
34 #include <sys/module.h>
35 #include <sys/malloc.h>
37 #include <sys/timetc.h>
38 #include <machine/bus.h>
39 #include <machine/intr.h>
44 #include <arm/xscale/pxa/pxavar.h>
45 #include <arm/xscale/pxa/pxareg.h>
47 static MALLOC_DEFINE(M_PXASMI, "PXA SMI",
48 "Data for static memory interface devices.");
50 struct pxa_smi_softc {
51 struct resource *ps_res[1];
53 bus_space_tag_t ps_bst;
58 struct resource_list smid_resources;
62 static struct resource_spec pxa_smi_spec[] = {
63 { SYS_RES_MEMORY, 0, RF_ACTIVE },
67 static int pxa_smi_probe(device_t);
68 static int pxa_smi_attach(device_t);
70 static int pxa_smi_print_child(device_t, device_t);
72 static int pxa_smi_read_ivar(device_t, device_t, int, uintptr_t *);
74 static struct resource * pxa_smi_alloc_resource(device_t, device_t,
75 int, int *, rman_res_t, rman_res_t, rman_res_t, u_int);
76 static int pxa_smi_release_resource(device_t, device_t,
77 int, int, struct resource *);
78 static int pxa_smi_activate_resource(device_t, device_t,
79 int, int, struct resource *);
81 static void pxa_smi_add_device(device_t, const char *, int);
84 pxa_smi_probe(device_t dev)
87 if (resource_disabled("smi", device_get_unit(dev)))
90 device_set_desc(dev, "Static Memory Interface");
95 pxa_smi_attach(device_t dev)
99 struct pxa_smi_softc *sc;
101 sc = (struct pxa_smi_softc *)device_get_softc(dev);
103 error = bus_alloc_resources(dev, pxa_smi_spec, sc->ps_res);
105 device_printf(dev, "could not allocate resources\n");
109 sc->ps_mem.rm_type = RMAN_ARRAY;
110 sc->ps_mem.rm_descr = device_get_nameunit(dev);
111 if (rman_init(&sc->ps_mem) != 0)
112 panic("pxa_smi_attach: failed to init mem rman");
113 if (rman_manage_region(&sc->ps_mem, 0, PXA2X0_CS_SIZE * 6) != 0)
114 panic("pxa_smi_attach: failed ot set up mem rman");
116 sc->ps_bst = base_tag;
117 sc->ps_base = rman_get_start(sc->ps_res[0]);
120 while (resource_find_match(&i, &dname, &dunit, "at",
121 device_get_nameunit(dev)) == 0) {
122 pxa_smi_add_device(dev, dname, dunit);
125 bus_generic_probe(dev);
126 bus_generic_attach(dev);
132 pxa_smi_print_child(device_t dev, device_t child)
134 struct smi_ivars *smid;
137 smid = (struct smi_ivars *)device_get_ivars(child);
139 device_printf(dev, "unknown device: %s\n",
140 device_get_nameunit(child));
146 retval += bus_print_child_header(dev, child);
148 retval += resource_list_print_type(&smid->smid_resources, "at mem",
149 SYS_RES_MEMORY, "%#jx");
150 retval += resource_list_print_type(&smid->smid_resources, "irq",
153 retval += bus_print_child_footer(dev, child);
159 pxa_smi_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
161 struct pxa_smi_softc *sc;
162 struct smi_ivars *smid;
164 sc = device_get_softc(dev);
165 smid = device_get_ivars(child);
168 case SMI_IVAR_PHYSBASE:
169 *((bus_addr_t *)result) = smid->smid_mem;
179 static struct resource *
180 pxa_smi_alloc_resource(device_t dev, device_t child, int type, int *rid,
181 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
183 struct pxa_smi_softc *sc;
184 struct smi_ivars *smid;
186 struct resource_list *rl;
187 struct resource_list_entry *rle;
190 sc = (struct pxa_smi_softc *)device_get_softc(dev);
191 smid = (struct smi_ivars *)device_get_ivars(child);
192 rl = &smid->smid_resources;
194 if (type == SYS_RES_IOPORT)
195 type = SYS_RES_MEMORY;
197 rle = resource_list_find(rl, type, *rid);
200 if (rle->res != NULL)
201 panic("pxa_smi_alloc_resource: resource is busy");
203 needactivate = flags & RF_ACTIVE;
208 rv = rman_reserve_resource(&sc->ps_mem, rle->start, rle->end,
209 rle->count, flags, child);
213 rman_set_rid(rv, *rid);
214 rman_set_bustag(rv, sc->ps_bst);
215 rman_set_bushandle(rv, rle->start);
217 if (bus_activate_resource(child, type, *rid, rv) != 0) {
218 rman_release_resource(rv);
226 rv = bus_alloc_resource(dev, type, rid, rle->start, rle->end,
231 if (bus_activate_resource(child, type, *rid, rv) != 0) {
232 bus_release_resource(dev, type, *rid, rv);
247 pxa_smi_release_resource(device_t dev, device_t child, int type, int rid,
250 struct smi_ivars *smid;
251 struct resource_list *rl;
252 struct resource_list_entry *rle;
254 if (type == SYS_RES_IRQ)
255 return (bus_release_resource(dev, SYS_RES_IRQ, rid, r));
257 smid = (struct smi_ivars *)device_get_ivars(child);
258 rl = &smid->smid_resources;
260 if (type == SYS_RES_IOPORT)
261 type = SYS_RES_MEMORY;
263 rle = resource_list_find(rl, type, rid);
265 panic("pxa_smi_release_resource: can't find resource");
266 if (rle->res == NULL)
267 panic("pxa_smi_release_resource: resource entry not busy");
269 rman_release_resource(rle->res);
276 pxa_smi_activate_resource(device_t dev, device_t child, int type, int rid,
279 struct pxa_smi_softc *sc;
281 sc = (struct pxa_smi_softc *)device_get_softc(dev);
283 if (type == SYS_RES_IRQ)
284 return (bus_activate_resource(dev, SYS_RES_IRQ, rid, r));
286 rman_set_bushandle(r, (bus_space_handle_t)pmap_mapdev(rman_get_start(r),
288 return (rman_activate_resource(r));
291 static device_method_t pxa_smi_methods[] = {
292 DEVMETHOD(device_probe, pxa_smi_probe),
293 DEVMETHOD(device_attach, pxa_smi_attach),
295 DEVMETHOD(bus_print_child, pxa_smi_print_child),
297 DEVMETHOD(bus_read_ivar, pxa_smi_read_ivar),
299 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
301 DEVMETHOD(bus_alloc_resource, pxa_smi_alloc_resource),
302 DEVMETHOD(bus_release_resource, pxa_smi_release_resource),
303 DEVMETHOD(bus_activate_resource, pxa_smi_activate_resource),
308 static driver_t pxa_smi_driver = {
311 sizeof(struct pxa_smi_softc),
314 static devclass_t pxa_smi_devclass;
316 DRIVER_MODULE(smi, pxa, pxa_smi_driver, pxa_smi_devclass, 0, 0);
319 pxa_smi_add_device(device_t dev, const char *name, int unit)
323 struct smi_ivars *ivars;
325 ivars = (struct smi_ivars *)malloc(
326 sizeof(struct smi_ivars), M_PXASMI, M_WAITOK);
328 child = device_add_child(dev, name, unit);
330 free(ivars, M_PXASMI);
334 device_set_ivars(child, ivars);
335 resource_list_init(&ivars->smid_resources);
339 resource_int_value(name, unit, "mem", &start);
340 resource_int_value(name, unit, "size", &count);
341 if (start > 0 || count > 0) {
342 resource_list_add(&ivars->smid_resources, SYS_RES_MEMORY, 0,
343 start, start + count, count);
344 ivars->smid_mem = (bus_addr_t)start;
349 resource_int_value(name, unit, "irq", &start);
351 resource_list_add(&ivars->smid_resources, SYS_RES_IRQ, 0, start,
354 if (resource_disabled(name, unit))
355 device_disable(child);