]> CyberLeo.Net >> Repos - FreeBSD/releng/10.2.git/blob - sys/mips/atheros/ar71xx_ohci.c
- Copy stable/10@285827 to releng/10.2 in preparation for 10.2-RC1
[FreeBSD/releng/10.2.git] / sys / mips / atheros / ar71xx_ohci.c
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("$FreeBSD$");
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);