1/*-
2 * Copyright (c) 2006 M. Warner Losh. All rights reserved.
3 * Copyright (c) 2009 Andrew Turner. 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, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include <sys/cdefs.h>
27__FBSDID("$FreeBSD: head/sys/dev/usb/controller/ohci_s3c24x0.c 227849 2011-11-22 21:56:55Z hselasky $");
28
29#include <sys/stdint.h>
30#include <sys/stddef.h>
31#include <sys/param.h>
32#include <sys/queue.h>
33#include <sys/types.h>
34#include <sys/systm.h>
35#include <sys/kernel.h>
36#include <sys/bus.h>
37#include <sys/module.h>
38#include <sys/lock.h>
39#include <sys/mutex.h>
40#include <sys/condvar.h>
41#include <sys/sysctl.h>
42#include <sys/sx.h>
43#include <sys/unistd.h>
44#include <sys/callout.h>
45#include <sys/malloc.h>
46#include <sys/priv.h>
47
48#include <dev/usb/usb.h>
49#include <dev/usb/usbdi.h>
50
51#include <dev/usb/usb_core.h>
52#include <dev/usb/usb_busdma.h>
53#include <dev/usb/usb_process.h>
54#include <dev/usb/usb_util.h>
55
56#include <dev/usb/usb_controller.h>
57#include <dev/usb/usb_bus.h>
58#include <dev/usb/controller/ohci.h>
59#include <dev/usb/controller/ohcireg.h>
60
61#include <sys/rman.h>
62
63#include <arm/s3c2xx0/s3c24x0reg.h>
64
65static device_probe_t ohci_s3c24x0_probe;
66static device_attach_t ohci_s3c24x0_attach;
67static device_detach_t ohci_s3c24x0_detach;
68
69static int
70ohci_s3c24x0_probe(device_t dev)
71{
72 device_set_desc(dev, "S3C24x0 integrated OHCI controller");
73 return (BUS_PROBE_DEFAULT);
74}
75
76static int
77ohci_s3c24x0_attach(device_t dev)
78{
79 struct ohci_softc *sc = device_get_softc(dev);
80 int err;
81 int rid;
82
83 /* initialise some bus fields */
84 sc->sc_bus.parent = dev;
85 sc->sc_bus.devices = sc->sc_devices;
86 sc->sc_bus.devices_max = OHCI_MAX_DEVICES;
87
88 /* get all DMA memory */
89 if (usb_bus_mem_alloc_all(&sc->sc_bus, USB_GET_DMA_TAG(dev),
90 &ohci_iterate_hw_softc)) {
91 return (ENOMEM);
92 }
93
94 sc->sc_dev = dev;
95
96 rid = 0;
97 sc->sc_io_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
98 &rid, RF_ACTIVE);
99
100 if (!(sc->sc_io_res)) {
101 err = ENOMEM;
102 goto error;
103 }
104 sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
105 sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
106 sc->sc_io_size = rman_get_size(sc->sc_io_res);
107
108 rid = 0;
109 sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
110 RF_ACTIVE);
111 if (!(sc->sc_irq_res)) {
112 goto error;
113 }
114 sc->sc_bus.bdev = device_add_child(dev, "usbus", -1);
115 if (!(sc->sc_bus.bdev)) {
116 goto error;
117 }
118 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
119
120 strlcpy(sc->sc_vendor, "Samsung", sizeof(sc->sc_vendor));
121
122 err = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
123 NULL, (void *)ohci_interrupt, sc, &sc->sc_intr_hdl);
124 if (err) {
125 sc->sc_intr_hdl = NULL;
126 goto error;
127 }
128
129 bus_space_write_4(sc->sc_io_tag, sc->sc_io_hdl,
130 OHCI_CONTROL, 0);
131
132 err = ohci_init(sc);
133 if (!err) {
134 err = device_probe_and_attach(sc->sc_bus.bdev);
135 }
136 if (err) {
137 goto error;
138 }
139 return (0);
140
141error:
142 ohci_s3c24x0_detach(dev);
143 return (ENXIO);
144}
145
146static int
147ohci_s3c24x0_detach(device_t dev)
148{
149 struct ohci_softc *sc = device_get_softc(dev);
150 device_t bdev;
151 int err;
152
153 if (sc->sc_bus.bdev) {
154 bdev = sc->sc_bus.bdev;
155 device_detach(bdev);
156 device_delete_child(dev, bdev);
157 }
158 /* during module unload there are lots of children leftover */
159 device_delete_children(dev);
160
161 /*
162 * Put the controller into reset, then disable clocks and do
163 * the MI tear down. We have to disable the clocks/hardware
164 * after we do the rest of the teardown. We also disable the
165 * clocks in the opposite order we acquire them, but that
166 * doesn't seem to be absolutely necessary. We free up the
167 * clocks after we disable them, so the system could, in
168 * theory, reuse them.
169 */
170 bus_space_write_4(sc->sc_io_tag, sc->sc_io_hdl,
171 OHCI_CONTROL, 0);
172
173 if (sc->sc_irq_res && sc->sc_intr_hdl) {
174 /*
175 * only call ohci_detach() after ohci_init()
176 */
177 ohci_detach(sc);
178
179 err = bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_intr_hdl);
180 sc->sc_intr_hdl = NULL;
181 }
182 if (sc->sc_irq_res) {
183 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);
184 sc->sc_irq_res = NULL;
185 }
186 if (sc->sc_io_res) {
187 bus_release_resource(dev, SYS_RES_MEMORY, 0,
188 sc->sc_io_res);
189 sc->sc_io_res = NULL;
190 }
191 usb_bus_mem_free_all(&sc->sc_bus, &ohci_iterate_hw_softc);
192
193 return (0);
194}
195
196static device_method_t ohci_methods[] = {
197 /* Device interface */
198 DEVMETHOD(device_probe, ohci_s3c24x0_probe),
199 DEVMETHOD(device_attach, ohci_s3c24x0_attach),
200 DEVMETHOD(device_detach, ohci_s3c24x0_detach),
201 DEVMETHOD(device_shutdown, bus_generic_shutdown),
202
203 DEVMETHOD_END
204};
205
206static driver_t ohci_driver = {
207 "ohci",
208 ohci_methods,
209 sizeof(struct ohci_softc),
210};
211
212static devclass_t ohci_devclass;
213
214DRIVER_MODULE(ohci, s3c24x0, ohci_driver, ohci_devclass, 0, 0);
215MODULE_DEPEND(ohci, usb, 1, 1, 1);