1#include <sys/cdefs.h>
2__FBSDID("$FreeBSD: head/sys/mips/rt305x/rt305x_dotg.c 227849 2011-11-22 21:56:55Z hselasky $");
3
4/*-
5 * Copyright (c) 2010,2011 Aleksandr Rybalko. All rights reserved.
6 * Copyright (c) 2007-2008 Hans Petter Selasky. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
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.
16 *
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
27 * SUCH DAMAGE.
28 */
29
30#include <sys/stdint.h>
31#include <sys/stddef.h>
32#include <sys/param.h>
33#include <sys/queue.h>
34#include <sys/types.h>
35#include <sys/systm.h>
36#include <sys/kernel.h>
37#include <sys/bus.h>
38#include <sys/module.h>
39#include <sys/lock.h>
40#include <sys/mutex.h>
41#include <sys/condvar.h>
42#include <sys/sysctl.h>
43#include <sys/sx.h>
44#include <sys/unistd.h>
45#include <sys/callout.h>
46#include <sys/malloc.h>
47#include <sys/priv.h>
48#include <sys/rman.h>
49
50#include <dev/usb/usb.h>
51#include <dev/usb/usbdi.h>
52
53#include <dev/usb/usb_core.h>
54#include <dev/usb/usb_busdma.h>
55#include <dev/usb/usb_process.h>
56#include <dev/usb/usb_util.h>
57
58#include <dev/usb/usb_controller.h>
59#include <dev/usb/usb_bus.h>
60
61#include <dev/usb/controller/dotg.h>
62#include <mips/rt305x/rt305xreg.h>
63#include <mips/rt305x/rt305x_sysctlvar.h>
64
65#define MEM_RID 0
66
67static device_probe_t dotg_obio_probe;
68static device_attach_t dotg_obio_attach;
69static device_detach_t dotg_obio_detach;
70static device_shutdown_t dotg_obio_shutdown;
71
72struct dotg_obio_softc {
73 struct dotg_softc sc_dci; /* must be first */
74};
75
76static int
77dotg_obio_probe(device_t dev)
78{
79 device_set_desc(dev, "DWC like USB OTG controller");
80 return (0);
81}
82
83static int
84dotg_obio_attach(device_t dev)
85{
86 struct dotg_obio_softc *sc = device_get_softc(dev);
87 int err;
88
89 /* setup controller interface softc */
90
91 /* initialise some bus fields */
92 sc->sc_dci.sc_dev = dev;
93 sc->sc_dci.sc_bus.parent = dev;
94 sc->sc_dci.sc_bus.devices = sc->sc_dci.sc_devices;
95 sc->sc_dci.sc_bus.devices_max = DOTG_MAX_DEVICES;
96
97 /* get all DMA memory */
98 if (usb_bus_mem_alloc_all(&sc->sc_dci.sc_bus,
99 USB_GET_DMA_TAG(dev), NULL)) {
100 printf("No mem\n");
101 return (ENOMEM);
102 }
103 sc->sc_dci.sc_mem_rid = 0;
104 sc->sc_dci.sc_mem_res =
105 bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->sc_dci.sc_irq_rid,
106 RF_ACTIVE);
107 if (!(sc->sc_dci.sc_mem_res)) {
108 printf("Can`t alloc MEM\n");
109 goto error;
110 }
111 sc->sc_dci.sc_bst = rman_get_bustag(sc->sc_dci.sc_mem_res);
112 sc->sc_dci.sc_bsh = rman_get_bushandle(sc->sc_dci.sc_mem_res);
113
114 sc->sc_dci.sc_irq_rid = 0;
115 sc->sc_dci.sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
116 &sc->sc_dci.sc_irq_rid, RF_SHAREABLE| RF_ACTIVE);
117 if (!(sc->sc_dci.sc_irq_res)) {
118 printf("Can`t alloc IRQ\n");
119 goto error;
120 }
121
122 sc->sc_dci.sc_bus.bdev = device_add_child(dev, "usbus", -1);
123 if (!(sc->sc_dci.sc_bus.bdev)) {
124 printf("Can`t add usbus\n");
125 goto error;
126 }
127 device_set_ivars(sc->sc_dci.sc_bus.bdev, &sc->sc_dci.sc_bus);
128
129#if (__FreeBSD_version >= 700031)
130 err = bus_setup_intr(dev, sc->sc_dci.sc_irq_res,
131 INTR_TYPE_BIO | INTR_MPSAFE, NULL, (driver_intr_t *)dotg_interrupt,
132 sc, &sc->sc_dci.sc_intr_hdl);
133#else
134 err = bus_setup_intr(dev, sc->sc_dci.sc_irq_res,
135 INTR_TYPE_BIO | INTR_MPSAFE, (driver_intr_t *)dotg_interrupt,
136 sc, &sc->sc_dci.sc_intr_hdl);
137#endif
138 if (err) {
139 sc->sc_dci.sc_intr_hdl = NULL;
140 printf("Can`t set IRQ handle\n");
141 goto error;
142 }
143
144 /* Run clock for OTG core */
145 rt305x_sysctl_set(SYSCTL_CLKCFG1, rt305x_sysctl_get(SYSCTL_CLKCFG1) |
146 SYSCTL_CLKCFG1_OTG_CLK_EN);
147 rt305x_sysctl_set(SYSCTL_RSTCTRL, SYSCTL_RSTCTRL_OTG);
148 DELAY(100);
149
150 err = dotg_init(&sc->sc_dci);
151 if (err) printf("dotg_init fail\n");
152 if (!err) {
153 err = device_probe_and_attach(sc->sc_dci.sc_bus.bdev);
154 if (err) printf("device_probe_and_attach fail\n");
155 }
156 if (err) {
157 goto error;
158 }
159 return (0);
160
161error:
162 dotg_obio_detach(dev);
163 return (ENXIO);
164}
165
166static int
167dotg_obio_detach(device_t dev)
168{
169 struct dotg_obio_softc *sc = device_get_softc(dev);
170 device_t bdev;
171 int err;
172
173 if (sc->sc_dci.sc_bus.bdev) {
174 bdev = sc->sc_dci.sc_bus.bdev;
175 device_detach(bdev);
176 device_delete_child(dev, bdev);
177 }
178 /* during module unload there are lots of children leftover */
179 device_delete_children(dev);
180
181 if (sc->sc_dci.sc_irq_res && sc->sc_dci.sc_intr_hdl) {
182 /*
183 * only call dotg_obio_uninit() after dotg_obio_init()
184 */
185 dotg_uninit(&sc->sc_dci);
186
187 /* Stop OTG clock */
188 rt305x_sysctl_set(SYSCTL_CLKCFG1,
189 rt305x_sysctl_get(SYSCTL_CLKCFG1) &
190 ~SYSCTL_CLKCFG1_OTG_CLK_EN);
191
192 err = bus_teardown_intr(dev, sc->sc_dci.sc_irq_res,
193 sc->sc_dci.sc_intr_hdl);
194 sc->sc_dci.sc_intr_hdl = NULL;
195 }
196 if (sc->sc_dci.sc_irq_res) {
197 bus_release_resource(dev, SYS_RES_IRQ, 0,
198 sc->sc_dci.sc_irq_res);
199 sc->sc_dci.sc_irq_res = NULL;
200 }
201 if (sc->sc_dci.sc_mem_res) {
202 bus_release_resource(dev, SYS_RES_MEMORY, 0,
203 sc->sc_dci.sc_mem_res);
204 sc->sc_dci.sc_mem_res = NULL;
205 }
206 usb_bus_mem_free_all(&sc->sc_dci.sc_bus, NULL);
207
208 return (0);
209}
210
211static int
212dotg_obio_shutdown(device_t dev)
213{
214 struct dotg_obio_softc *sc = device_get_softc(dev);
215 int err;
216
217 err = bus_generic_shutdown(dev);
218 if (err)
219 return (err);
220
221 dotg_uninit(&sc->sc_dci);
222
223 return (0);
224}
225
226static device_method_t dotg_obio_methods[] = {
227 /* Device interface */
228 DEVMETHOD(device_probe, dotg_obio_probe),
229 DEVMETHOD(device_attach, dotg_obio_attach),
230 DEVMETHOD(device_detach, dotg_obio_detach),
231 DEVMETHOD(device_shutdown, dotg_obio_shutdown),
232
233 DEVMETHOD_END
234};
235
236static driver_t dotg_obio_driver = {
237 "dotg",
238 dotg_obio_methods,
239 sizeof(struct dotg_obio_softc),
240};
241
242static devclass_t dotg_obio_devclass;
243
244DRIVER_MODULE(dotg, obio, dotg_obio_driver, dotg_obio_devclass, 0, 0);