1 /*-
2 * Copyright (c) 2009, Oleksandr Tymoshenko <gonzo@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
10 * 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.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD: releng/8.3/sys/mips/atheros/ar71xx_ohci.c 230714 2012-01-29 01:22:48Z marius $");
30
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/bus.h>
34 #include <sys/rman.h>
35 #include <sys/condvar.h>
36 #include <sys/kernel.h>
37 #include <sys/module.h>
38
39 #include <dev/usb/usb.h>
40 #include <dev/usb/usbdi.h>
41
42 #include <dev/usb/usb_core.h>
43 #include <dev/usb/usb_busdma.h>
44 #include <dev/usb/usb_process.h>
45 #include <dev/usb/usb_util.h>
46
47 #include <dev/usb/usb_controller.h>
48 #include <dev/usb/usb_bus.h>
49 #include <dev/usb/controller/ohci.h>
50 #include <dev/usb/controller/ohcireg.h>
51
52 #include <sys/rman.h>
53
54 static int ar71xx_ohci_attach(device_t dev);
55 static int ar71xx_ohci_detach(device_t dev);
56 static int ar71xx_ohci_probe(device_t dev);
57
58 struct ar71xx_ohci_softc
59 {
60 struct ohci_softc sc_ohci;
61 };
62
63 static int
64 ar71xx_ohci_probe(device_t dev)
65 {
66 device_set_desc(dev, "AR71XX integrated OHCI controller");
67 return (BUS_PROBE_DEFAULT);
68 }
69
70 static int
71 ar71xx_ohci_attach(device_t dev)
72 {
73 struct ar71xx_ohci_softc *sc = device_get_softc(dev);
74 int err;
75 int rid;
76
77 /* initialise some bus fields */
78 sc->sc_ohci.sc_bus.parent = dev;
79 sc->sc_ohci.sc_bus.devices = sc->sc_ohci.sc_devices;
80 sc->sc_ohci.sc_bus.devices_max = OHCI_MAX_DEVICES;
81
82 /* get all DMA memory */
83 if (usb_bus_mem_alloc_all(&sc->sc_ohci.sc_bus,
84 USB_GET_DMA_TAG(dev), &ohci_iterate_hw_softc)) {
85 return (ENOMEM);
86 }
87
88 sc->sc_ohci.sc_dev = dev;
89
90 rid = 0;
91 sc->sc_ohci.sc_io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
92 RF_ACTIVE);
93 if (sc->sc_ohci.sc_io_res == NULL) {
94 err = ENOMEM;
95 goto error;
96 }
97 sc->sc_ohci.sc_io_tag = rman_get_bustag(sc->sc_ohci.sc_io_res);
98 sc->sc_ohci.sc_io_hdl = rman_get_bushandle(sc->sc_ohci.sc_io_res);
99 sc->sc_ohci.sc_io_size = rman_get_size(sc->sc_ohci.sc_io_res);
100
101 rid = 0;
102 sc->sc_ohci.sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
103 RF_ACTIVE);
104 if (sc->sc_ohci.sc_irq_res == NULL) {
105 err = ENOMEM;
106 goto error;
107 }
108 sc->sc_ohci.sc_bus.bdev = device_add_child(dev, "usbus", -1);
109 if (sc->sc_ohci.sc_bus.bdev == NULL) {
110 err = ENOMEM;
111 goto error;
112 }
113 device_set_ivars(sc->sc_ohci.sc_bus.bdev, &sc->sc_ohci.sc_bus);
114
115 err = bus_setup_intr(dev, sc->sc_ohci.sc_irq_res,
116 INTR_TYPE_BIO | INTR_MPSAFE, NULL,
117 (driver_intr_t *)ohci_interrupt, sc, &sc->sc_ohci.sc_intr_hdl);
118 if (err) {
119 err = ENXIO;
120 goto error;
121 }
122
123 strlcpy(sc->sc_ohci.sc_vendor, "Atheros", sizeof(sc->sc_ohci.sc_vendor));
124
125 bus_space_write_4(sc->sc_ohci.sc_io_tag, sc->sc_ohci.sc_io_hdl, OHCI_CONTROL, 0);
126
127 err = ohci_init(&sc->sc_ohci);
128 if (!err)
129 err = device_probe_and_attach(sc->sc_ohci.sc_bus.bdev);
130
131 if (err)
132 goto error;
133 return (0);
134
135 error:
136 if (err) {
137 ar71xx_ohci_detach(dev);
138 return (err);
139 }
140 return (err);
141 }
142
143 static int
144 ar71xx_ohci_detach(device_t dev)
145 {
146 struct ar71xx_ohci_softc *sc = device_get_softc(dev);
147 device_t bdev;
148
149 if (sc->sc_ohci.sc_bus.bdev) {
150 bdev = sc->sc_ohci.sc_bus.bdev;
151 device_detach(bdev);
152 device_delete_child(dev, bdev);
153 }
154 /* during module unload there are lots of children leftover */
155 device_delete_all_children(dev);
156
157 /*
158 * Put the controller into reset, then disable clocks and do
159 * the MI tear down. We have to disable the clocks/hardware
160 * after we do the rest of the teardown. We also disable the
161 * clocks in the opposite order we acquire them, but that
162 * doesn't seem to be absolutely necessary. We free up the
163 * clocks after we disable them, so the system could, in
164 * theory, reuse them.
165 */
166 bus_space_write_4(sc->sc_ohci.sc_io_tag, sc->sc_ohci.sc_io_hdl,
167 OHCI_CONTROL, 0);
168
169 if (sc->sc_ohci.sc_intr_hdl) {
170 bus_teardown_intr(dev, sc->sc_ohci.sc_irq_res, sc->sc_ohci.sc_intr_hdl);
171 sc->sc_ohci.sc_intr_hdl = NULL;
172 }
173
174 if (sc->sc_ohci.sc_irq_res && sc->sc_ohci.sc_intr_hdl) {
175 /*
176 * only call ohci_detach() after ohci_init()
177 */
178 ohci_detach(&sc->sc_ohci);
179
180 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_ohci.sc_irq_res);
181 sc->sc_ohci.sc_irq_res = NULL;
182 }
183 if (sc->sc_ohci.sc_io_res) {
184 bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_ohci.sc_io_res);
185 sc->sc_ohci.sc_io_res = NULL;
186 sc->sc_ohci.sc_io_tag = 0;
187 sc->sc_ohci.sc_io_hdl = 0;
188 }
189 usb_bus_mem_free_all(&sc->sc_ohci.sc_bus, &ohci_iterate_hw_softc);
190
191 return (0);
192 }
193
194 static device_method_t ohci_methods[] = {
195 /* Device interface */
196 DEVMETHOD(device_probe, ar71xx_ohci_probe),
197 DEVMETHOD(device_attach, ar71xx_ohci_attach),
198 DEVMETHOD(device_detach, ar71xx_ohci_detach),
199 DEVMETHOD(device_suspend, bus_generic_suspend),
200 DEVMETHOD(device_resume, bus_generic_resume),
201 DEVMETHOD(device_shutdown, bus_generic_shutdown),
202
203 DEVMETHOD_END
204 };
205
206 static driver_t ohci_driver = {
207 .name = "ohci",
208 .methods = ohci_methods,
209 .size = sizeof(struct ar71xx_ohci_softc),
210 };
211
212 static devclass_t ohci_devclass;
213
214 DRIVER_MODULE(ohci, apb, ohci_driver, ohci_devclass, 0, 0);
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