/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2012 Hans Petter Selasky. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static device_probe_t dwc_otg_probe; static struct ofw_compat_data compat_data[] = { { "synopsys,designware-hs-otg2", 1 }, { "snps,dwc2", 1 }, { NULL, 0 } }; static int dwc_otg_probe(device_t dev) { if (!ofw_bus_status_okay(dev)) return (ENXIO); if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data) return (ENXIO); device_set_desc(dev, "DWC OTG 2.0 integrated USB controller"); return (BUS_PROBE_DEFAULT); } static int dwc_otg_irq_index(device_t dev, int *rid) { int idx, rv; phandle_t node; node = ofw_bus_get_node(dev); rv = ofw_bus_find_string_index(node, "interrupt-names", "usb", &idx); if (rv != 0) return (rv); *rid = idx; return (0); } int dwc_otg_attach(device_t dev) { struct dwc_otg_fdt_softc *sc = device_get_softc(dev); char usb_mode[24]; int err; int rid; sc->sc_otg.sc_bus.parent = dev; /* get USB mode, if any */ if (OF_getprop(ofw_bus_get_node(dev), "dr_mode", &usb_mode, sizeof(usb_mode)) > 0) { /* ensure proper zero termination */ usb_mode[sizeof(usb_mode) - 1] = 0; if (strcasecmp(usb_mode, "host") == 0) sc->sc_otg.sc_mode = DWC_MODE_HOST; else if (strcasecmp(usb_mode, "peripheral") == 0) sc->sc_otg.sc_mode = DWC_MODE_DEVICE; else if (strcasecmp(usb_mode, "otg") != 0) { device_printf(dev, "Invalid FDT dr_mode: %s\n", usb_mode); } } rid = 0; sc->sc_otg.sc_io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); if (!(sc->sc_otg.sc_io_res)) goto error; /* * brcm,bcm2708-usb FDT provides two interrupts, we need only the USB * interrupt (VC_USB). The latest FDT for it provides an * interrupt-names property and swapped them around, while older ones * did not have interrupt-names and put the usb interrupt in the second * position. We'll attempt to use interrupt-names first with a fallback * to the old method of assuming the index based on the compatible * string. */ if (dwc_otg_irq_index(dev, &rid) != 0) rid = ofw_bus_is_compatible(dev, "brcm,bcm2708-usb") ? 1 : 0; sc->sc_otg.sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); if (sc->sc_otg.sc_irq_res == NULL) goto error; sc->sc_otg.sc_bus.bdev = device_add_child(dev, "usbus", -1); if (sc->sc_otg.sc_bus.bdev == NULL) goto error; err = dwc_otg_init(&sc->sc_otg); if (err == 0) { err = device_probe_and_attach(sc->sc_otg.sc_bus.bdev); } if (err) goto error; return (0); error: dwc_otg_detach(dev); return (ENXIO); } int dwc_otg_detach(device_t dev) { struct dwc_otg_fdt_softc *sc = device_get_softc(dev); /* during module unload there are lots of children leftover */ device_delete_children(dev); if (sc->sc_otg.sc_irq_res && sc->sc_otg.sc_intr_hdl) { /* * only call dwc_otg_uninit() after dwc_otg_init() */ dwc_otg_uninit(&sc->sc_otg); bus_teardown_intr(dev, sc->sc_otg.sc_irq_res, sc->sc_otg.sc_intr_hdl); sc->sc_otg.sc_intr_hdl = NULL; } /* free IRQ channel, if any */ if (sc->sc_otg.sc_irq_res) { bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_otg.sc_irq_res); sc->sc_otg.sc_irq_res = NULL; } /* free memory resource, if any */ if (sc->sc_otg.sc_io_res) { bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_otg.sc_io_res); sc->sc_otg.sc_io_res = NULL; } usb_bus_mem_free_all(&sc->sc_otg.sc_bus, NULL); return (0); } static device_method_t dwc_otg_methods[] = { /* Device interface */ DEVMETHOD(device_probe, dwc_otg_probe), DEVMETHOD(device_attach, dwc_otg_attach), DEVMETHOD(device_detach, dwc_otg_detach), DEVMETHOD(device_suspend, bus_generic_suspend), DEVMETHOD(device_resume, bus_generic_resume), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD_END }; driver_t dwc_otg_driver = { .name = "dwcotg", .methods = dwc_otg_methods, .size = sizeof(struct dwc_otg_fdt_softc), }; DRIVER_MODULE(dwcotg, simplebus, dwc_otg_driver, 0, 0); MODULE_DEPEND(dwcotg, usb, 1, 1, 1);