2 * Copyright (c) 2012 Hans Petter Selasky. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 #include <sys/cdefs.h>
27 __FBSDID("$FreeBSD$");
29 #include <sys/param.h>
30 #include <sys/systm.h>
32 #include <sys/condvar.h>
33 #include <sys/kernel.h>
35 #include <sys/malloc.h>
36 #include <sys/module.h>
37 #include <sys/mutex.h>
40 #include <dev/ofw/openfirm.h>
41 #include <dev/ofw/ofw_bus.h>
42 #include <dev/ofw/ofw_bus_subr.h>
44 #include <dev/usb/usb.h>
45 #include <dev/usb/usbdi.h>
47 #include <dev/usb/usb_core.h>
48 #include <dev/usb/usb_busdma.h>
49 #include <dev/usb/usb_process.h>
50 #include <dev/usb/usb_util.h>
52 #include <dev/usb/usb_controller.h>
53 #include <dev/usb/usb_bus.h>
55 #include <dev/usb/controller/dwc_otg.h>
56 #include <dev/usb/controller/dwc_otg_fdt.h>
58 static device_probe_t dwc_otg_probe;
60 static struct ofw_compat_data compat_data[] = {
61 { "synopsys,designware-hs-otg2", 1 },
67 dwc_otg_probe(device_t dev)
70 if (!ofw_bus_status_okay(dev))
73 if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
76 device_set_desc(dev, "DWC OTG 2.0 integrated USB controller");
78 return (BUS_PROBE_DEFAULT);
82 dwc_otg_attach(device_t dev)
84 struct dwc_otg_fdt_softc *sc = device_get_softc(dev);
89 /* initialise some bus fields */
90 sc->sc_otg.sc_bus.parent = dev;
91 sc->sc_otg.sc_bus.devices = sc->sc_otg.sc_devices;
92 sc->sc_otg.sc_bus.devices_max = DWC_OTG_MAX_DEVICES;
93 sc->sc_otg.sc_bus.dma_bits = 32;
95 /* get USB mode, if any */
96 if (OF_getprop(ofw_bus_get_node(dev), "dr_mode",
97 &usb_mode, sizeof(usb_mode)) > 0) {
99 /* ensure proper zero termination */
100 usb_mode[sizeof(usb_mode) - 1] = 0;
102 if (strcasecmp(usb_mode, "host") == 0)
103 sc->sc_otg.sc_mode = DWC_MODE_HOST;
104 else if (strcasecmp(usb_mode, "peripheral") == 0)
105 sc->sc_otg.sc_mode = DWC_MODE_DEVICE;
106 else if (strcasecmp(usb_mode, "otg") != 0) {
107 device_printf(dev, "Invalid FDT dr_mode: %s\n",
112 /* get all DMA memory */
113 if (usb_bus_mem_alloc_all(&sc->sc_otg.sc_bus,
114 USB_GET_DMA_TAG(dev), NULL)) {
118 sc->sc_otg.sc_io_res =
119 bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
121 if (!(sc->sc_otg.sc_io_res)) {
125 sc->sc_otg.sc_io_tag = rman_get_bustag(sc->sc_otg.sc_io_res);
126 sc->sc_otg.sc_io_hdl = rman_get_bushandle(sc->sc_otg.sc_io_res);
127 sc->sc_otg.sc_io_size = rman_get_size(sc->sc_otg.sc_io_res);
131 * brcm,bcm2708-usb FDT provides two interrupts,
132 * we need only second one (VC_USB)
134 rid = ofw_bus_is_compatible(dev, "brcm,bcm2708-usb") ? 1 : 0;
135 sc->sc_otg.sc_irq_res =
136 bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
137 if (sc->sc_otg.sc_irq_res == NULL)
140 sc->sc_otg.sc_bus.bdev = device_add_child(dev, "usbus", -1);
141 if (sc->sc_otg.sc_bus.bdev == NULL)
144 device_set_ivars(sc->sc_otg.sc_bus.bdev, &sc->sc_otg.sc_bus);
146 err = bus_setup_intr(dev, sc->sc_otg.sc_irq_res, INTR_TYPE_TTY | INTR_MPSAFE,
147 &dwc_otg_filter_interrupt, &dwc_otg_interrupt, sc, &sc->sc_otg.sc_intr_hdl);
149 sc->sc_otg.sc_intr_hdl = NULL;
152 err = dwc_otg_init(&sc->sc_otg);
154 err = device_probe_and_attach(sc->sc_otg.sc_bus.bdev);
168 dwc_otg_detach(device_t dev)
170 struct dwc_otg_fdt_softc *sc = device_get_softc(dev);
173 /* during module unload there are lots of children leftover */
174 device_delete_children(dev);
176 if (sc->sc_otg.sc_irq_res && sc->sc_otg.sc_intr_hdl) {
178 * only call dwc_otg_uninit() after dwc_otg_init()
180 dwc_otg_uninit(&sc->sc_otg);
182 err = bus_teardown_intr(dev, sc->sc_otg.sc_irq_res,
183 sc->sc_otg.sc_intr_hdl);
184 sc->sc_otg.sc_intr_hdl = NULL;
186 /* free IRQ channel, if any */
187 if (sc->sc_otg.sc_irq_res) {
188 bus_release_resource(dev, SYS_RES_IRQ, 0,
189 sc->sc_otg.sc_irq_res);
190 sc->sc_otg.sc_irq_res = NULL;
192 /* free memory resource, if any */
193 if (sc->sc_otg.sc_io_res) {
194 bus_release_resource(dev, SYS_RES_MEMORY, 0,
195 sc->sc_otg.sc_io_res);
196 sc->sc_otg.sc_io_res = NULL;
198 usb_bus_mem_free_all(&sc->sc_otg.sc_bus, NULL);
203 static device_method_t dwc_otg_methods[] = {
204 /* Device interface */
205 DEVMETHOD(device_probe, dwc_otg_probe),
206 DEVMETHOD(device_attach, dwc_otg_attach),
207 DEVMETHOD(device_detach, dwc_otg_detach),
208 DEVMETHOD(device_suspend, bus_generic_suspend),
209 DEVMETHOD(device_resume, bus_generic_resume),
210 DEVMETHOD(device_shutdown, bus_generic_shutdown),
215 driver_t dwc_otg_driver = {
217 .methods = dwc_otg_methods,
218 .size = sizeof(struct dwc_otg_fdt_softc),
221 static devclass_t dwc_otg_devclass;
223 DRIVER_MODULE(dwcotg, simplebus, dwc_otg_driver, dwc_otg_devclass, 0, 0);
224 MODULE_DEPEND(dwcotg, usb, 1, 1, 1);