2 * Copyright (c) 2006 M. Warner Losh. All rights reserved.
3 * Copyright (c) 2009 Andrew Turner. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
26 #include <sys/cdefs.h>
27 __FBSDID("$FreeBSD$");
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>
37 #include <sys/module.h>
39 #include <sys/mutex.h>
40 #include <sys/condvar.h>
41 #include <sys/sysctl.h>
43 #include <sys/unistd.h>
44 #include <sys/callout.h>
45 #include <sys/malloc.h>
48 #include <dev/usb/usb.h>
49 #include <dev/usb/usbdi.h>
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>
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>
63 #include <arm/samsung/s3c2xx0/s3c24x0reg.h>
65 static device_probe_t ohci_s3c24x0_probe;
66 static device_attach_t ohci_s3c24x0_attach;
67 static device_detach_t ohci_s3c24x0_detach;
70 ohci_s3c24x0_probe(device_t dev)
72 device_set_desc(dev, "S3C24x0 integrated OHCI controller");
73 return (BUS_PROBE_DEFAULT);
77 ohci_s3c24x0_attach(device_t dev)
79 struct ohci_softc *sc = device_get_softc(dev);
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 sc->sc_bus.dma_bits = 32;
89 /* get all DMA memory */
90 if (usb_bus_mem_alloc_all(&sc->sc_bus, USB_GET_DMA_TAG(dev),
91 &ohci_iterate_hw_softc)) {
98 sc->sc_io_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
101 if (!(sc->sc_io_res)) {
105 sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
106 sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
107 sc->sc_io_size = rman_get_size(sc->sc_io_res);
110 sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
112 if (!(sc->sc_irq_res)) {
115 sc->sc_bus.bdev = device_add_child(dev, "usbus", -1);
116 if (!(sc->sc_bus.bdev)) {
119 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
121 strlcpy(sc->sc_vendor, "Samsung", sizeof(sc->sc_vendor));
123 err = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
124 NULL, (void *)ohci_interrupt, sc, &sc->sc_intr_hdl);
126 sc->sc_intr_hdl = NULL;
130 bus_space_write_4(sc->sc_io_tag, sc->sc_io_hdl,
135 err = device_probe_and_attach(sc->sc_bus.bdev);
143 ohci_s3c24x0_detach(dev);
148 ohci_s3c24x0_detach(device_t dev)
150 struct ohci_softc *sc = device_get_softc(dev);
153 /* during module unload there are lots of children leftover */
154 device_delete_children(dev);
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.
165 bus_space_write_4(sc->sc_io_tag, sc->sc_io_hdl,
168 if (sc->sc_irq_res && sc->sc_intr_hdl) {
170 * only call ohci_detach() after ohci_init()
174 err = bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_intr_hdl);
175 sc->sc_intr_hdl = NULL;
177 if (sc->sc_irq_res) {
178 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);
179 sc->sc_irq_res = NULL;
182 bus_release_resource(dev, SYS_RES_MEMORY, 0,
184 sc->sc_io_res = NULL;
186 usb_bus_mem_free_all(&sc->sc_bus, &ohci_iterate_hw_softc);
191 static device_method_t ohci_methods[] = {
192 /* Device interface */
193 DEVMETHOD(device_probe, ohci_s3c24x0_probe),
194 DEVMETHOD(device_attach, ohci_s3c24x0_attach),
195 DEVMETHOD(device_detach, ohci_s3c24x0_detach),
196 DEVMETHOD(device_suspend, bus_generic_suspend),
197 DEVMETHOD(device_resume, bus_generic_resume),
198 DEVMETHOD(device_shutdown, bus_generic_shutdown),
203 static driver_t ohci_driver = {
205 .methods = ohci_methods,
206 .size = sizeof(struct ohci_softc),
209 static devclass_t ohci_devclass;
211 DRIVER_MODULE(ohci, s3c24x0, ohci_driver, ohci_devclass, 0, 0);
212 MODULE_DEPEND(ohci, usb, 1, 1, 1);