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/10.3/sys/mips/atheros/ar71xx_ohci.c 278278 2015-02-05 20:03:02Z hselasky $");
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 static int ar71xx_ohci_attach(device_t dev);
53 static int ar71xx_ohci_detach(device_t dev);
54 static int ar71xx_ohci_probe(device_t dev);
55
56 struct ar71xx_ohci_softc
57 {
58 struct ohci_softc sc_ohci;
59 };
60
61 static int
62 ar71xx_ohci_probe(device_t dev)
63 {
64 device_set_desc(dev, "AR71XX integrated OHCI controller");
65 return (BUS_PROBE_DEFAULT);
66 }
67
68 static int
69 ar71xx_ohci_attach(device_t dev)
70 {
71 struct ar71xx_ohci_softc *sc = device_get_softc(dev);
72 int err;
73 int rid;
74
75 /* initialise some bus fields */
76 sc->sc_ohci.sc_bus.parent = dev;
77 sc->sc_ohci.sc_bus.devices = sc->sc_ohci.sc_devices;
78 sc->sc_ohci.sc_bus.devices_max = OHCI_MAX_DEVICES;
79 sc->sc_ohci.sc_bus.dma_bits = 32;
80
81 /* get all DMA memory */
82 if (usb_bus_mem_alloc_all(&sc->sc_ohci.sc_bus,
83 USB_GET_DMA_TAG(dev), &ohci_iterate_hw_softc)) {
84 return (ENOMEM);
85 }
86
87 sc->sc_ohci.sc_dev = dev;
88
89 rid = 0;
90 sc->sc_ohci.sc_io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
91 RF_ACTIVE);
92 if (sc->sc_ohci.sc_io_res == NULL) {
93 err = ENOMEM;
94 goto error;
95 }
96 sc->sc_ohci.sc_io_tag = rman_get_bustag(sc->sc_ohci.sc_io_res);
97 sc->sc_ohci.sc_io_hdl = rman_get_bushandle(sc->sc_ohci.sc_io_res);
98 sc->sc_ohci.sc_io_size = rman_get_size(sc->sc_ohci.sc_io_res);
99
100 rid = 0;
101 sc->sc_ohci.sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
102 RF_ACTIVE);
103 if (sc->sc_ohci.sc_irq_res == NULL) {
104 err = ENOMEM;
105 goto error;
106 }
107 sc->sc_ohci.sc_bus.bdev = device_add_child(dev, "usbus", -1);
108 if (sc->sc_ohci.sc_bus.bdev == NULL) {
109 err = ENOMEM;
110 goto error;
111 }
112 device_set_ivars(sc->sc_ohci.sc_bus.bdev, &sc->sc_ohci.sc_bus);
113
114 err = bus_setup_intr(dev, sc->sc_ohci.sc_irq_res,
115 INTR_TYPE_BIO | INTR_MPSAFE, NULL,
116 (driver_intr_t *)ohci_interrupt, sc, &sc->sc_ohci.sc_intr_hdl);
117 if (err) {
118 err = ENXIO;
119 goto error;
120 }
121
122 strlcpy(sc->sc_ohci.sc_vendor, "Atheros", sizeof(sc->sc_ohci.sc_vendor));
123
124 bus_space_write_4(sc->sc_ohci.sc_io_tag, sc->sc_ohci.sc_io_hdl, OHCI_CONTROL, 0);
125
126 err = ohci_init(&sc->sc_ohci);
127 if (!err)
128 err = device_probe_and_attach(sc->sc_ohci.sc_bus.bdev);
129
130 if (err)
131 goto error;
132 return (0);
133
134 error:
135 if (err) {
136 ar71xx_ohci_detach(dev);
137 return (err);
138 }
139 return (err);
140 }
141
142 static int
143 ar71xx_ohci_detach(device_t dev)
144 {
145 struct ar71xx_ohci_softc *sc = device_get_softc(dev);
146 device_t bdev;
147
148 if (sc->sc_ohci.sc_bus.bdev) {
149 bdev = sc->sc_ohci.sc_bus.bdev;
150 device_detach(bdev);
151 device_delete_child(dev, bdev);
152 }
153 /* during module unload there are lots of children leftover */
154 device_delete_children(dev);
155
156 /*
157 * Put the controller into reset, then disable clocks and do
158 * the MI tear down. We have to disable the clocks/hardware
159 * after we do the rest of the teardown. We also disable the
160 * clocks in the opposite order we acquire them, but that
161 * doesn't seem to be absolutely necessary. We free up the
162 * clocks after we disable them, so the system could, in
163 * theory, reuse them.
164 */
165 bus_space_write_4(sc->sc_ohci.sc_io_tag, sc->sc_ohci.sc_io_hdl,
166 OHCI_CONTROL, 0);
167
168 if (sc->sc_ohci.sc_intr_hdl) {
169 bus_teardown_intr(dev, sc->sc_ohci.sc_irq_res, sc->sc_ohci.sc_intr_hdl);
170 sc->sc_ohci.sc_intr_hdl = NULL;
171 }
172
173 if (sc->sc_ohci.sc_irq_res && sc->sc_ohci.sc_intr_hdl) {
174 /*
175 * only call ohci_detach() after ohci_init()
176 */
177 ohci_detach(&sc->sc_ohci);
178
179 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_ohci.sc_irq_res);
180 sc->sc_ohci.sc_irq_res = NULL;
181 }
182 if (sc->sc_ohci.sc_io_res) {
183 bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_ohci.sc_io_res);
184 sc->sc_ohci.sc_io_res = NULL;
185 sc->sc_ohci.sc_io_tag = 0;
186 sc->sc_ohci.sc_io_hdl = 0;
187 }
188 usb_bus_mem_free_all(&sc->sc_ohci.sc_bus, &ohci_iterate_hw_softc);
189
190 return (0);
191 }
192
193 static device_method_t ohci_methods[] = {
194 /* Device interface */
195 DEVMETHOD(device_probe, ar71xx_ohci_probe),
196 DEVMETHOD(device_attach, ar71xx_ohci_attach),
197 DEVMETHOD(device_detach, ar71xx_ohci_detach),
198 DEVMETHOD(device_suspend, bus_generic_suspend),
199 DEVMETHOD(device_resume, bus_generic_resume),
200 DEVMETHOD(device_shutdown, bus_generic_shutdown),
201
202 DEVMETHOD_END
203 };
204
205 static driver_t ohci_driver = {
206 .name = "ohci",
207 .methods = ohci_methods,
208 .size = sizeof(struct ar71xx_ohci_softc),
209 };
210
211 static devclass_t ohci_devclass;
212
213 DRIVER_MODULE(ohci, apb, ohci_driver, ohci_devclass, 0, 0);
Cache object: 7438b12c896a0144522c3bb0b45560c6
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