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/ohci.h>
63
64 #include <mips/rt305x/rt305xreg.h>
65 #include <mips/rt305x/rt305x_sysctlvar.h>
66
67 #define OHCI_HC_DEVSTR "Ralink integrated USB controller"
68
69 static device_probe_t ohci_obio_probe;
70 static device_attach_t ohci_obio_attach;
71 static device_detach_t ohci_obio_detach;
72
73 static int
ohci_obio_probe(device_t self)74 ohci_obio_probe(device_t self)
75 {
76 device_set_desc(self, OHCI_HC_DEVSTR);
77
78 return (BUS_PROBE_DEFAULT);
79 }
80
81 static int
ohci_obio_attach(device_t self)82 ohci_obio_attach(device_t self)
83 {
84 ohci_softc_t *sc = device_get_softc(self);
85 uint32_t reg;
86 int err;
87 int rid;
88
89 /* setup controller interface softc */
90 reg = rt305x_sysctl_get(SYSCTL_SYSCFG1);
91 reg |= SYSCTL_SYSCFG1_USB0_HOST_MODE;
92 rt305x_sysctl_set(SYSCTL_SYSCFG1, reg);
93
94 reg = rt305x_sysctl_get(SYSCTL_CLKCFG1);
95 reg |= SYSCTL_CLKCFG1_UPHY0_CLK_EN;
96 #ifdef MT7620
97 reg |= SYSCTL_CLKCFG1_UPHY1_CLK_EN;
98 #endif
99 rt305x_sysctl_set(SYSCTL_CLKCFG1, reg);
100
101 reg = rt305x_sysctl_get(SYSCTL_RSTCTRL);
102 reg |= SYSCTL_RSTCTRL_UPHY0 | SYSCTL_RSTCTRL_UPHY1;
103 rt305x_sysctl_set(SYSCTL_RSTCTRL, reg);
104 reg &= ~(SYSCTL_RSTCTRL_UPHY0 | SYSCTL_RSTCTRL_UPHY1);
105 DELAY(100000);
106 rt305x_sysctl_set(SYSCTL_RSTCTRL, reg);
107 DELAY(100000);
108
109 /* initialise some bus fields */
110 sc->sc_bus.parent = self;
111 sc->sc_bus.devices = sc->sc_devices;
112 sc->sc_bus.devices_max = OHCI_MAX_DEVICES;
113 sc->sc_bus.dma_bits = 32;
114
115 /* get all DMA memory */
116 if (usb_bus_mem_alloc_all(&sc->sc_bus,
117 USB_GET_DMA_TAG(self), &ohci_iterate_hw_softc)) {
118 printf("No mem\n");
119 return (ENOMEM);
120 }
121
122 rid = 0;
123 sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
124 RF_ACTIVE);
125 if (!sc->sc_io_res) {
126 device_printf(self, "Could not map memory\n");
127 goto error;
128 }
129 sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
130 sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
131 sc->sc_io_size = rman_get_size(sc->sc_io_res);
132
133 rid = 0;
134 sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
135 RF_SHAREABLE | RF_ACTIVE);
136 if (sc->sc_irq_res == NULL) {
137 device_printf(self, "Could not allocate irq\n");
138 goto error;
139 }
140
141 sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
142 if (!(sc->sc_bus.bdev)) {
143 device_printf(self, "Could not add USB device\n");
144 goto error;
145 }
146 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
147 device_set_desc(sc->sc_bus.bdev, OHCI_HC_DEVSTR);
148
149 sprintf(sc->sc_vendor, "Ralink");
150
151 err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
152 NULL, (driver_intr_t *)ohci_interrupt, sc, &sc->sc_intr_hdl);
153 if (err) {
154 device_printf(self, "Could not setup irq, %d\n", err);
155 sc->sc_intr_hdl = NULL;
156 goto error;
157 }
158
159 err = ohci_init(sc);
160 if (!err) {
161 err = device_probe_and_attach(sc->sc_bus.bdev);
162 }
163 if (err) {
164 device_printf(self, "USB init failed err=%d\n", err);
165 goto error;
166 }
167 return (0);
168
169 error:
170 ohci_obio_detach(self);
171 return (ENXIO);
172 }
173
174 static int
ohci_obio_detach(device_t self)175 ohci_obio_detach(device_t self)
176 {
177 ohci_softc_t *sc = device_get_softc(self);
178 device_t bdev;
179 int err;
180
181 if (sc->sc_bus.bdev) {
182 bdev = sc->sc_bus.bdev;
183 device_detach(bdev);
184 device_delete_child(self, bdev);
185 }
186 /* during module unload there are lots of children leftover */
187 device_delete_children(self);
188
189 if (sc->sc_irq_res && sc->sc_intr_hdl) {
190 /*
191 * only call ohci_detach() after ohci_init()
192 */
193 ohci_detach(sc);
194
195 /* Stop OHCI clock */
196 rt305x_sysctl_set(SYSCTL_CLKCFG1,
197 rt305x_sysctl_get(SYSCTL_CLKCFG1) &
198 ~(SYSCTL_CLKCFG1_UPHY0_CLK_EN
199 #ifdef MT7620
200 | SYSCTL_CLKCFG1_UPHY1_CLK_EN
201 #endif
202 ));
203
204 err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
205 if (err)
206 device_printf(self, "Could not tear down irq, %d\n",
207 err);
208 sc->sc_intr_hdl = NULL;
209 }
210 if (sc->sc_irq_res) {
211 bus_release_resource(self, SYS_RES_IRQ, 0,
212 sc->sc_irq_res);
213 sc->sc_irq_res = NULL;
214 }
215 if (sc->sc_io_res) {
216 bus_release_resource(self, SYS_RES_MEMORY, 0,
217 sc->sc_io_res);
218 sc->sc_io_res = NULL;
219 }
220 usb_bus_mem_free_all(&sc->sc_bus, &ohci_iterate_hw_softc);
221
222 return (0);
223 }
224
225 static device_method_t ohci_obio_methods[] = {
226 /* Device interface */
227 DEVMETHOD(device_probe, ohci_obio_probe),
228 DEVMETHOD(device_attach, ohci_obio_attach),
229 DEVMETHOD(device_detach, ohci_obio_detach),
230 DEVMETHOD(device_suspend, bus_generic_suspend),
231 DEVMETHOD(device_resume, bus_generic_resume),
232 DEVMETHOD(device_shutdown, bus_generic_shutdown),
233
234 DEVMETHOD_END
235 };
236
237 static driver_t ohci_obio_driver = {
238 .name = "ohci",
239 .methods = ohci_obio_methods,
240 .size = sizeof(ohci_softc_t),
241 };
242
243 static devclass_t ohci_obio_devclass;
244
245 DRIVER_MODULE(ohci, obio, ohci_obio_driver, ohci_obio_devclass, 0, 0);
246