1 #include <sys/cdefs.h>
2 __FBSDID("$FreeBSD$");
3
4 /*-
5 * Copyright (c) 2015 Stanislav Galabov. All rights reserved.
6 * Copyright (c) 2010,2011 Aleksandr Rybalko. All rights reserved.
7 * Copyright (c) 2007-2008 Hans Petter Selasky. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31 #include <sys/stdint.h>
32 #include <sys/stddef.h>
33 #include <sys/param.h>
34 #include <sys/queue.h>
35 #include <sys/types.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/bus.h>
39 #include <sys/module.h>
40 #include <sys/lock.h>
41 #include <sys/mutex.h>
42 #include <sys/condvar.h>
43 #include <sys/sysctl.h>
44 #include <sys/sx.h>
45 #include <sys/unistd.h>
46 #include <sys/callout.h>
47 #include <sys/malloc.h>
48 #include <sys/priv.h>
49 #include <sys/rman.h>
50
51 #include <dev/usb/usb.h>
52 #include <dev/usb/usbdi.h>
53
54 #include <dev/usb/usb_core.h>
55 #include <dev/usb/usb_busdma.h>
56 #include <dev/usb/usb_process.h>
57 #include <dev/usb/usb_util.h>
58
59 #include <dev/usb/usb_controller.h>
60 #include <dev/usb/usb_bus.h>
61
62 #include <dev/usb/controller/dwc_otg.h>
63 #include <mips/rt305x/rt305xreg.h>
64 #include <mips/rt305x/rt305x_sysctlvar.h>
65
66 #define MEM_RID 0
67
68 static device_probe_t dotg_obio_probe;
69 static device_attach_t dotg_obio_attach;
70 static device_detach_t dotg_obio_detach;
71
72 static int
dotg_obio_probe(device_t dev)73 dotg_obio_probe(device_t dev)
74 {
75 device_set_desc(dev, "DWC like USB OTG controller");
76 return (0);
77 }
78
79 static int
dotg_obio_attach(device_t dev)80 dotg_obio_attach(device_t dev)
81 {
82 struct dwc_otg_softc *sc = device_get_softc(dev);
83 uint32_t tmp;
84 int err, rid;
85
86 /* setup controller interface softc */
87
88 /* initialise some bus fields */
89 sc->sc_mode = DWC_MODE_HOST;
90 sc->sc_bus.parent = dev;
91 sc->sc_bus.devices = sc->sc_devices;
92 sc->sc_bus.devices_max = DWC_OTG_MAX_DEVICES;
93 sc->sc_bus.dma_bits = 32;
94
95 /* get all DMA memory */
96 if (usb_bus_mem_alloc_all(&sc->sc_bus,
97 USB_GET_DMA_TAG(dev), NULL)) {
98 printf("No mem\n");
99 return (ENOMEM);
100 }
101 rid = 0;
102 sc->sc_io_res =
103 bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
104 if (!(sc->sc_io_res)) {
105 printf("Can`t alloc MEM\n");
106 goto error;
107 }
108 sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
109 sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
110 sc->sc_io_size = rman_get_size(sc->sc_io_res);
111
112 rid = 0;
113 sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
114 &rid, RF_ACTIVE);
115 if (!(sc->sc_irq_res)) {
116 printf("Can`t alloc IRQ\n");
117 goto error;
118 }
119
120 sc->sc_bus.bdev = device_add_child(dev, "usbus", -1);
121 if (!(sc->sc_bus.bdev)) {
122 printf("Can`t add usbus\n");
123 goto error;
124 }
125 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
126
127 #if (__FreeBSD_version >= 700031)
128 err = bus_setup_intr(dev, sc->sc_irq_res,
129 INTR_TYPE_TTY | INTR_MPSAFE, dwc_otg_filter_interrupt,
130 dwc_otg_interrupt, sc, &sc->sc_intr_hdl);
131 #else
132 #error error
133 err = bus_setup_intr(dev, sc->sc_irq_res,
134 INTR_TYPE_BIO | INTR_MPSAFE,(driver_intr_t*)dwc_otg_interrupt,
135 sc, &sc->sc_intr_hdl);
136 #endif
137 if (err) {
138 sc->sc_intr_hdl = NULL;
139 printf("Can`t set IRQ handle\n");
140 goto error;
141 }
142
143 /* Run clock for OTG core */
144 rt305x_sysctl_set(SYSCTL_CLKCFG1, rt305x_sysctl_get(SYSCTL_CLKCFG1) |
145 SYSCTL_CLKCFG1_OTG_CLK_EN);
146 tmp = rt305x_sysctl_get(SYSCTL_RSTCTRL);
147 rt305x_sysctl_set(SYSCTL_RSTCTRL, tmp | SYSCTL_RSTCTRL_OTG);
148 DELAY(100);
149 /*
150 * Docs say that RSTCTRL bits for RT305x are W1C, so there should
151 * be no need for the below, but who really knows?
152 */
153 // rt305x_sysctl_set(SYSCTL_RSTCTRL, tmp & ~SYSCTL_RSTCTRL_OTG);
154 // DELAY(100);
155
156 err = dwc_otg_init(sc);
157 if (err) printf("dotg_init fail\n");
158 if (!err) {
159 err = device_probe_and_attach(sc->sc_bus.bdev);
160 if (err) printf("device_probe_and_attach fail %d\n", err);
161 }
162 if (err) {
163 goto error;
164 }
165 return (0);
166
167 error:
168 dotg_obio_detach(dev);
169 return (ENXIO);
170 }
171
172 static int
dotg_obio_detach(device_t dev)173 dotg_obio_detach(device_t dev)
174 {
175 struct dwc_otg_softc *sc = device_get_softc(dev);
176 device_t bdev;
177 int err;
178
179 if (sc->sc_bus.bdev) {
180 bdev = sc->sc_bus.bdev;
181 device_detach(bdev);
182 device_delete_child(dev, bdev);
183 }
184 /* during module unload there are lots of children leftover */
185 device_delete_children(dev);
186
187 if (sc->sc_irq_res && sc->sc_intr_hdl) {
188 /*
189 * only call dotg_obio_uninit() after dotg_obio_init()
190 */
191 dwc_otg_uninit(sc);
192
193 /* Stop OTG clock */
194 rt305x_sysctl_set(SYSCTL_CLKCFG1,
195 rt305x_sysctl_get(SYSCTL_CLKCFG1) &
196 ~SYSCTL_CLKCFG1_OTG_CLK_EN);
197
198 err = bus_teardown_intr(dev, sc->sc_irq_res,
199 sc->sc_intr_hdl);
200 sc->sc_intr_hdl = NULL;
201 }
202 if (sc->sc_irq_res) {
203 bus_release_resource(dev, SYS_RES_IRQ, 0,
204 sc->sc_irq_res);
205 sc->sc_irq_res = NULL;
206 }
207 if (sc->sc_io_res) {
208 bus_release_resource(dev, SYS_RES_MEMORY, 0,
209 sc->sc_io_res);
210 sc->sc_io_res = NULL;
211 }
212 usb_bus_mem_free_all(&sc->sc_bus, NULL);
213
214 return (0);
215 }
216
217 static device_method_t dotg_obio_methods[] = {
218 /* Device interface */
219 DEVMETHOD(device_probe, dotg_obio_probe),
220 DEVMETHOD(device_attach, dotg_obio_attach),
221 DEVMETHOD(device_detach, dotg_obio_detach),
222 DEVMETHOD(device_suspend, bus_generic_suspend),
223 DEVMETHOD(device_resume, bus_generic_resume),
224 DEVMETHOD(device_shutdown, bus_generic_shutdown),
225
226 DEVMETHOD_END
227 };
228
229 static driver_t dotg_obio_driver = {
230 .name = "dwcotg",
231 .methods = dotg_obio_methods,
232 .size = sizeof(struct dwc_otg_softc),
233 };
234
235 static devclass_t dotg_obio_devclass;
236
237 DRIVER_MODULE(dwcotg, obio, dotg_obio_driver, dotg_obio_devclass, 0, 0);
238