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/ehci.h>
63
64 #include <dev/ofw/openfirm.h>
65 #include <dev/ofw/ofw_bus.h>
66 #include <dev/ofw/ofw_bus_subr.h>
67
68 #define EHCI_HC_DEVSTR "MTK USB 2.0 Controller"
69
70 static device_probe_t ehci_fdt_probe;
71 static device_attach_t ehci_fdt_attach;
72 static device_detach_t ehci_fdt_detach;
73
74 static int
ehci_fdt_probe(device_t self)75 ehci_fdt_probe(device_t self)
76 {
77
78 if (!ofw_bus_status_okay(self))
79 return (ENXIO);
80
81 if (!ofw_bus_is_compatible(self, "generic-ehci"))
82 return (ENXIO);
83
84 device_set_desc(self, EHCI_HC_DEVSTR);
85
86 return (BUS_PROBE_DEFAULT);
87 }
88
89 static int
ehci_fdt_attach(device_t self)90 ehci_fdt_attach(device_t self)
91 {
92 ehci_softc_t *sc = device_get_softc(self);
93 int err;
94 int rid;
95
96 /* initialise some bus fields */
97 sc->sc_bus.parent = self;
98 sc->sc_bus.devices = sc->sc_devices;
99 sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
100 sc->sc_bus.dma_bits = 32;
101
102 /* get all DMA memory */
103 if (usb_bus_mem_alloc_all(&sc->sc_bus,
104 USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
105 printf("No mem\n");
106 return (ENOMEM);
107 }
108
109 rid = 0;
110 sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
111 RF_ACTIVE);
112 if (!sc->sc_io_res) {
113 device_printf(self, "Could not map memory\n");
114 goto error;
115 }
116 sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
117 sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
118 sc->sc_io_size = rman_get_size(sc->sc_io_res);
119
120 rid = 0;
121 sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
122 RF_SHAREABLE | RF_ACTIVE);
123 if (sc->sc_irq_res == NULL) {
124 device_printf(self, "Could not allocate irq\n");
125 goto error;
126 }
127
128 sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
129 if (!(sc->sc_bus.bdev)) {
130 device_printf(self, "Could not add USB device\n");
131 goto error;
132 }
133 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
134 device_set_desc(sc->sc_bus.bdev, EHCI_HC_DEVSTR);
135
136 sprintf(sc->sc_vendor, "MediaTek");
137
138 err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
139 NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
140 if (err) {
141 device_printf(self, "Could not setup irq, %d\n", err);
142 sc->sc_intr_hdl = NULL;
143 goto error;
144 }
145
146 err = ehci_init(sc);
147 if (!err) {
148 err = device_probe_and_attach(sc->sc_bus.bdev);
149 }
150 if (err) {
151 device_printf(self, "USB init failed err=%d\n", err);
152 goto error;
153 }
154 return (0);
155
156 error:
157 ehci_fdt_detach(self);
158 return (ENXIO);
159 }
160
161 static int
ehci_fdt_detach(device_t self)162 ehci_fdt_detach(device_t self)
163 {
164 ehci_softc_t *sc = device_get_softc(self);
165 int err;
166
167 /* during module unload there are lots of children leftover */
168 device_delete_children(self);
169
170 if (sc->sc_irq_res && sc->sc_intr_hdl) {
171 /*
172 * only call ehci_detach() after ehci_init()
173 */
174 ehci_detach(sc);
175
176 err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
177 if (err)
178 device_printf(self, "Could not tear down irq, %d\n",
179 err);
180 sc->sc_intr_hdl = NULL;
181 }
182 if (sc->sc_irq_res) {
183 bus_release_resource(self, SYS_RES_IRQ, 0,
184 sc->sc_irq_res);
185 sc->sc_irq_res = NULL;
186 }
187 if (sc->sc_io_res) {
188 bus_release_resource(self, SYS_RES_MEMORY, 0,
189 sc->sc_io_res);
190 sc->sc_io_res = NULL;
191 }
192 usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);
193
194 return (0);
195 }
196
197 static device_method_t ehci_fdt_methods[] = {
198 /* Device interface */
199 DEVMETHOD(device_probe, ehci_fdt_probe),
200 DEVMETHOD(device_attach, ehci_fdt_attach),
201 DEVMETHOD(device_detach, ehci_fdt_detach),
202 DEVMETHOD(device_suspend, bus_generic_suspend),
203 DEVMETHOD(device_resume, bus_generic_resume),
204 DEVMETHOD(device_shutdown, bus_generic_shutdown),
205
206 DEVMETHOD_END
207 };
208
209 static driver_t ehci_fdt_driver = {
210 .name = "ehci",
211 .methods = ehci_fdt_methods,
212 .size = sizeof(ehci_softc_t),
213 };
214
215 static devclass_t ehci_fdt_devclass;
216
217 DRIVER_MODULE(ehci, simplebus, ehci_fdt_driver, ehci_fdt_devclass, 0, 0);
218