2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2006 M. Warner Losh. All rights reserved.
5 * Copyright (c) 2009 Andrew Turner. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
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>
39 #include <sys/module.h>
41 #include <sys/mutex.h>
42 #include <sys/condvar.h>
43 #include <sys/sysctl.h>
45 #include <sys/unistd.h>
46 #include <sys/callout.h>
47 #include <sys/malloc.h>
50 #include <dev/usb/usb.h>
51 #include <dev/usb/usbdi.h>
53 #include <dev/usb/usb_core.h>
54 #include <dev/usb/usb_busdma.h>
55 #include <dev/usb/usb_process.h>
56 #include <dev/usb/usb_util.h>
58 #include <dev/usb/usb_controller.h>
59 #include <dev/usb/usb_bus.h>
60 #include <dev/usb/controller/ohci.h>
61 #include <dev/usb/controller/ohcireg.h>
65 #include <arm/samsung/s3c2xx0/s3c24x0reg.h>
67 static device_probe_t ohci_s3c24x0_probe;
68 static device_attach_t ohci_s3c24x0_attach;
69 static device_detach_t ohci_s3c24x0_detach;
72 ohci_s3c24x0_probe(device_t dev)
74 device_set_desc(dev, "S3C24x0 integrated OHCI controller");
75 return (BUS_PROBE_DEFAULT);
79 ohci_s3c24x0_attach(device_t dev)
81 struct ohci_softc *sc = device_get_softc(dev);
85 /* initialise some bus fields */
86 sc->sc_bus.parent = dev;
87 sc->sc_bus.devices = sc->sc_devices;
88 sc->sc_bus.devices_max = OHCI_MAX_DEVICES;
89 sc->sc_bus.dma_bits = 32;
91 /* get all DMA memory */
92 if (usb_bus_mem_alloc_all(&sc->sc_bus, USB_GET_DMA_TAG(dev),
93 &ohci_iterate_hw_softc)) {
100 sc->sc_io_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
103 if (!(sc->sc_io_res)) {
107 sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
108 sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
109 sc->sc_io_size = rman_get_size(sc->sc_io_res);
112 sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
114 if (!(sc->sc_irq_res)) {
117 sc->sc_bus.bdev = device_add_child(dev, "usbus", -1);
118 if (!(sc->sc_bus.bdev)) {
121 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
123 strlcpy(sc->sc_vendor, "Samsung", sizeof(sc->sc_vendor));
125 err = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
126 NULL, (void *)ohci_interrupt, sc, &sc->sc_intr_hdl);
128 sc->sc_intr_hdl = NULL;
132 bus_space_write_4(sc->sc_io_tag, sc->sc_io_hdl,
137 err = device_probe_and_attach(sc->sc_bus.bdev);
145 ohci_s3c24x0_detach(dev);
150 ohci_s3c24x0_detach(device_t dev)
152 struct ohci_softc *sc = device_get_softc(dev);
155 /* during module unload there are lots of children leftover */
156 device_delete_children(dev);
159 * Put the controller into reset, then disable clocks and do
160 * the MI tear down. We have to disable the clocks/hardware
161 * after we do the rest of the teardown. We also disable the
162 * clocks in the opposite order we acquire them, but that
163 * doesn't seem to be absolutely necessary. We free up the
164 * clocks after we disable them, so the system could, in
165 * theory, reuse them.
167 bus_space_write_4(sc->sc_io_tag, sc->sc_io_hdl,
170 if (sc->sc_irq_res && sc->sc_intr_hdl) {
172 * only call ohci_detach() after ohci_init()
176 err = bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_intr_hdl);
177 sc->sc_intr_hdl = NULL;
179 if (sc->sc_irq_res) {
180 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);
181 sc->sc_irq_res = NULL;
184 bus_release_resource(dev, SYS_RES_MEMORY, 0,
186 sc->sc_io_res = NULL;
188 usb_bus_mem_free_all(&sc->sc_bus, &ohci_iterate_hw_softc);
193 static device_method_t ohci_methods[] = {
194 /* Device interface */
195 DEVMETHOD(device_probe, ohci_s3c24x0_probe),
196 DEVMETHOD(device_attach, ohci_s3c24x0_attach),
197 DEVMETHOD(device_detach, ohci_s3c24x0_detach),
198 DEVMETHOD(device_suspend, bus_generic_suspend),
199 DEVMETHOD(device_resume, bus_generic_resume),
200 DEVMETHOD(device_shutdown, bus_generic_shutdown),
205 static driver_t ohci_driver = {
207 .methods = ohci_methods,
208 .size = sizeof(struct ohci_softc),
211 static devclass_t ohci_devclass;
213 DRIVER_MODULE(ohci, s3c24x0, ohci_driver, ohci_devclass, 0, 0);
214 MODULE_DEPEND(ohci, usb, 1, 1, 1);