2 * Copyright (c) 2009, Oleksandr Tymoshenko <gonzo@FreeBSD.org>
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 unmodified, this list of conditions, and the following
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.
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
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
32 #include <sys/systm.h>
35 #include <sys/condvar.h>
36 #include <sys/kernel.h>
37 #include <sys/module.h>
39 #include <dev/usb/usb.h>
40 #include <dev/usb/usbdi.h>
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>
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>
52 #include <mips/atheros/ar71xxreg.h> /* for stuff in ar71xx_cpudef.h */
53 #include <mips/atheros/ar71xx_cpudef.h>
55 static int ar71xx_ohci_attach(device_t dev);
56 static int ar71xx_ohci_detach(device_t dev);
57 static int ar71xx_ohci_probe(device_t dev);
59 struct ar71xx_ohci_softc
61 struct ohci_softc sc_ohci;
65 ar71xx_ohci_probe(device_t dev)
67 device_set_desc(dev, "AR71XX integrated OHCI controller");
68 return (BUS_PROBE_DEFAULT);
72 ar71xx_ohci_intr(void *arg)
75 /* XXX TODO: should really see if this was our interrupt.. */
76 ar71xx_device_flush_ddr(AR71XX_CPU_DDR_FLUSH_USB);
82 ar71xx_ohci_attach(device_t dev)
84 struct ar71xx_ohci_softc *sc = device_get_softc(dev);
88 /* initialise some bus fields */
89 sc->sc_ohci.sc_bus.parent = dev;
90 sc->sc_ohci.sc_bus.devices = sc->sc_ohci.sc_devices;
91 sc->sc_ohci.sc_bus.devices_max = OHCI_MAX_DEVICES;
92 sc->sc_ohci.sc_bus.dma_bits = 32;
94 /* get all DMA memory */
95 if (usb_bus_mem_alloc_all(&sc->sc_ohci.sc_bus,
96 USB_GET_DMA_TAG(dev), &ohci_iterate_hw_softc)) {
100 sc->sc_ohci.sc_dev = dev;
103 sc->sc_ohci.sc_io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
105 if (sc->sc_ohci.sc_io_res == NULL) {
109 sc->sc_ohci.sc_io_tag = rman_get_bustag(sc->sc_ohci.sc_io_res);
110 sc->sc_ohci.sc_io_hdl = rman_get_bushandle(sc->sc_ohci.sc_io_res);
111 sc->sc_ohci.sc_io_size = rman_get_size(sc->sc_ohci.sc_io_res);
114 sc->sc_ohci.sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
116 if (sc->sc_ohci.sc_irq_res == NULL) {
120 sc->sc_ohci.sc_bus.bdev = device_add_child(dev, "usbus", -1);
121 if (sc->sc_ohci.sc_bus.bdev == NULL) {
125 device_set_ivars(sc->sc_ohci.sc_bus.bdev, &sc->sc_ohci.sc_bus);
127 err = bus_setup_intr(dev, sc->sc_ohci.sc_irq_res,
128 INTR_TYPE_BIO | INTR_MPSAFE, NULL,
129 ar71xx_ohci_intr, sc, &sc->sc_ohci.sc_intr_hdl);
135 strlcpy(sc->sc_ohci.sc_vendor, "Atheros", sizeof(sc->sc_ohci.sc_vendor));
137 bus_space_write_4(sc->sc_ohci.sc_io_tag, sc->sc_ohci.sc_io_hdl, OHCI_CONTROL, 0);
139 err = ohci_init(&sc->sc_ohci);
141 err = device_probe_and_attach(sc->sc_ohci.sc_bus.bdev);
149 ar71xx_ohci_detach(dev);
156 ar71xx_ohci_detach(device_t dev)
158 struct ar71xx_ohci_softc *sc = device_get_softc(dev);
161 if (sc->sc_ohci.sc_bus.bdev) {
162 bdev = sc->sc_ohci.sc_bus.bdev;
164 device_delete_child(dev, bdev);
166 /* during module unload there are lots of children leftover */
167 device_delete_children(dev);
170 * Put the controller into reset, then disable clocks and do
171 * the MI tear down. We have to disable the clocks/hardware
172 * after we do the rest of the teardown. We also disable the
173 * clocks in the opposite order we acquire them, but that
174 * doesn't seem to be absolutely necessary. We free up the
175 * clocks after we disable them, so the system could, in
176 * theory, reuse them.
178 bus_space_write_4(sc->sc_ohci.sc_io_tag, sc->sc_ohci.sc_io_hdl,
181 if (sc->sc_ohci.sc_intr_hdl) {
182 bus_teardown_intr(dev, sc->sc_ohci.sc_irq_res, sc->sc_ohci.sc_intr_hdl);
183 sc->sc_ohci.sc_intr_hdl = NULL;
186 if (sc->sc_ohci.sc_irq_res && sc->sc_ohci.sc_intr_hdl) {
188 * only call ohci_detach() after ohci_init()
190 ohci_detach(&sc->sc_ohci);
192 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_ohci.sc_irq_res);
193 sc->sc_ohci.sc_irq_res = NULL;
195 if (sc->sc_ohci.sc_io_res) {
196 bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_ohci.sc_io_res);
197 sc->sc_ohci.sc_io_res = NULL;
198 sc->sc_ohci.sc_io_tag = 0;
199 sc->sc_ohci.sc_io_hdl = 0;
201 usb_bus_mem_free_all(&sc->sc_ohci.sc_bus, &ohci_iterate_hw_softc);
206 static device_method_t ohci_methods[] = {
207 /* Device interface */
208 DEVMETHOD(device_probe, ar71xx_ohci_probe),
209 DEVMETHOD(device_attach, ar71xx_ohci_attach),
210 DEVMETHOD(device_detach, ar71xx_ohci_detach),
211 DEVMETHOD(device_suspend, bus_generic_suspend),
212 DEVMETHOD(device_resume, bus_generic_resume),
213 DEVMETHOD(device_shutdown, bus_generic_shutdown),
218 static driver_t ohci_driver = {
220 .methods = ohci_methods,
221 .size = sizeof(struct ar71xx_ohci_softc),
224 static devclass_t ohci_devclass;
226 DRIVER_MODULE(ohci, apb, ohci_driver, ohci_devclass, 0, 0);