acf411aafe
The newer versions of RPi FDT flipped the order of the interrupts specification and added an 'interrupt-names' property for driver aide in finding the correct interrupt, rather than assuming the positions. Use it if it's available, or fallback to the old method if there is no interrupt-names property with a usb value. This has been tested with both old RPi3B FDT and new RPi3B FDT, USB again works on the latter. Reported by: Tom Yan <tom.ty89 gmail com> MFC after: 3 days
246 lines
6.7 KiB
C
246 lines
6.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2012 Hans Petter Selasky. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/condvar.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/rman.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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#include <dev/usb/usb_core.h>
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#include <dev/usb/usb_busdma.h>
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#include <dev/usb/usb_process.h>
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#include <dev/usb/usb_util.h>
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#include <dev/usb/usb_controller.h>
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#include <dev/usb/usb_bus.h>
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#include <dev/usb/controller/dwc_otg.h>
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#include <dev/usb/controller/dwc_otg_fdt.h>
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static device_probe_t dwc_otg_probe;
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static struct ofw_compat_data compat_data[] = {
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{ "synopsys,designware-hs-otg2", 1 },
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{ "snps,dwc2", 1 },
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{ NULL, 0 }
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};
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static int
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dwc_otg_probe(device_t dev)
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{
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if (!ofw_bus_status_okay(dev))
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return (ENXIO);
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if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
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return (ENXIO);
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device_set_desc(dev, "DWC OTG 2.0 integrated USB controller");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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dwc_otg_irq_index(device_t dev, int *rid)
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{
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int idx, rv;
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phandle_t node;
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node = ofw_bus_get_node(dev);
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rv = ofw_bus_find_string_index(node, "interrupt-names", "usb", &idx);
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if (rv != 0)
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return (rv);
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*rid = idx;
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return (0);
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}
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int
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dwc_otg_attach(device_t dev)
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{
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struct dwc_otg_fdt_softc *sc = device_get_softc(dev);
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char usb_mode[24];
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int err;
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int rid;
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/* initialise some bus fields */
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sc->sc_otg.sc_bus.parent = dev;
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sc->sc_otg.sc_bus.devices = sc->sc_otg.sc_devices;
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sc->sc_otg.sc_bus.devices_max = DWC_OTG_MAX_DEVICES;
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sc->sc_otg.sc_bus.dma_bits = 32;
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/* get USB mode, if any */
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if (OF_getprop(ofw_bus_get_node(dev), "dr_mode",
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&usb_mode, sizeof(usb_mode)) > 0) {
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/* ensure proper zero termination */
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usb_mode[sizeof(usb_mode) - 1] = 0;
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if (strcasecmp(usb_mode, "host") == 0)
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sc->sc_otg.sc_mode = DWC_MODE_HOST;
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else if (strcasecmp(usb_mode, "peripheral") == 0)
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sc->sc_otg.sc_mode = DWC_MODE_DEVICE;
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else if (strcasecmp(usb_mode, "otg") != 0) {
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device_printf(dev, "Invalid FDT dr_mode: %s\n",
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usb_mode);
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}
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}
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/* get all DMA memory */
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if (usb_bus_mem_alloc_all(&sc->sc_otg.sc_bus,
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USB_GET_DMA_TAG(dev), NULL)) {
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return (ENOMEM);
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}
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rid = 0;
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sc->sc_otg.sc_io_res =
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bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
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if (!(sc->sc_otg.sc_io_res)) {
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err = ENOMEM;
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goto error;
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}
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sc->sc_otg.sc_io_tag = rman_get_bustag(sc->sc_otg.sc_io_res);
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sc->sc_otg.sc_io_hdl = rman_get_bushandle(sc->sc_otg.sc_io_res);
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sc->sc_otg.sc_io_size = rman_get_size(sc->sc_otg.sc_io_res);
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/*
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* brcm,bcm2708-usb FDT provides two interrupts, we need only the USB
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* interrupt (VC_USB). The latest FDT for it provides an
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* interrupt-names property and swapped them around, while older ones
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* did not have interrupt-names and put the usb interrupt in the second
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* position. We'll attempt to use interrupt-names first with a fallback
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* to the old method of assuming the index based on the compatible
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* string.
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*/
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if (dwc_otg_irq_index(dev, &rid) != 0)
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rid = ofw_bus_is_compatible(dev, "brcm,bcm2708-usb") ? 1 : 0;
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sc->sc_otg.sc_irq_res =
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bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
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if (sc->sc_otg.sc_irq_res == NULL)
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goto error;
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sc->sc_otg.sc_bus.bdev = device_add_child(dev, "usbus", -1);
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if (sc->sc_otg.sc_bus.bdev == NULL)
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goto error;
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device_set_ivars(sc->sc_otg.sc_bus.bdev, &sc->sc_otg.sc_bus);
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err = bus_setup_intr(dev, sc->sc_otg.sc_irq_res, INTR_TYPE_TTY | INTR_MPSAFE,
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&dwc_otg_filter_interrupt, &dwc_otg_interrupt, sc, &sc->sc_otg.sc_intr_hdl);
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if (err) {
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sc->sc_otg.sc_intr_hdl = NULL;
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goto error;
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}
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err = dwc_otg_init(&sc->sc_otg);
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if (err == 0) {
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err = device_probe_and_attach(sc->sc_otg.sc_bus.bdev);
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}
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if (err)
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goto error;
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return (0);
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error:
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dwc_otg_detach(dev);
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return (ENXIO);
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}
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int
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dwc_otg_detach(device_t dev)
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{
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struct dwc_otg_fdt_softc *sc = device_get_softc(dev);
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/* during module unload there are lots of children leftover */
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device_delete_children(dev);
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if (sc->sc_otg.sc_irq_res && sc->sc_otg.sc_intr_hdl) {
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/*
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* only call dwc_otg_uninit() after dwc_otg_init()
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*/
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dwc_otg_uninit(&sc->sc_otg);
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bus_teardown_intr(dev, sc->sc_otg.sc_irq_res,
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sc->sc_otg.sc_intr_hdl);
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sc->sc_otg.sc_intr_hdl = NULL;
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}
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/* free IRQ channel, if any */
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if (sc->sc_otg.sc_irq_res) {
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bus_release_resource(dev, SYS_RES_IRQ, 0,
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sc->sc_otg.sc_irq_res);
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sc->sc_otg.sc_irq_res = NULL;
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}
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/* free memory resource, if any */
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if (sc->sc_otg.sc_io_res) {
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bus_release_resource(dev, SYS_RES_MEMORY, 0,
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sc->sc_otg.sc_io_res);
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sc->sc_otg.sc_io_res = NULL;
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}
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usb_bus_mem_free_all(&sc->sc_otg.sc_bus, NULL);
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return (0);
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}
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static device_method_t dwc_otg_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, dwc_otg_probe),
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DEVMETHOD(device_attach, dwc_otg_attach),
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DEVMETHOD(device_detach, dwc_otg_detach),
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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD_END
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};
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driver_t dwc_otg_driver = {
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.name = "dwcotg",
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.methods = dwc_otg_methods,
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.size = sizeof(struct dwc_otg_fdt_softc),
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};
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static devclass_t dwc_otg_devclass;
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DRIVER_MODULE(dwcotg, simplebus, dwc_otg_driver, dwc_otg_devclass, 0, 0);
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MODULE_DEPEND(dwcotg, usb, 1, 1, 1);
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