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#include <machine/rtems-bsd-kernel-space.h>
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2012 Hans Petter Selasky. All rights reserved.
*
* 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 <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/condvar.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/rman.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usb_core.h>
#include <dev/usb/usb_busdma.h>
#include <dev/usb/usb_process.h>
#include <dev/usb/usb_util.h>
#include <dev/usb/usb_controller.h>
#include <dev/usb/usb_bus.h>
#include <dev/usb/controller/dwc_otg.h>
#include <dev/usb/controller/dwc_otg_fdt.h>
static device_probe_t dwc_otg_probe;
static const struct ofw_compat_data compat_data[] = {
{ "synopsys,designware-hs-otg2", 1 },
{ "snps,dwc2", 1 },
{ "snps,dwc-otg", 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;
/* initialise some bus fields */
sc->sc_otg.sc_bus.parent = dev;
sc->sc_otg.sc_bus.devices = sc->sc_otg.sc_devices;
sc->sc_otg.sc_bus.devices_max = DWC_OTG_MAX_DEVICES;
sc->sc_otg.sc_bus.dma_bits = 32;
/* 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);
}
} else {
sc->sc_otg.sc_mode = DWC_MODE_HOST;
}
/* get all DMA memory */
if (usb_bus_mem_alloc_all(&sc->sc_otg.sc_bus,
USB_GET_DMA_TAG(dev), NULL)) {
return (ENOMEM);
}
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)) {
err = ENOMEM;
goto error;
}
sc->sc_otg.sc_io_tag = rman_get_bustag(sc->sc_otg.sc_io_res);
sc->sc_otg.sc_io_hdl = rman_get_bushandle(sc->sc_otg.sc_io_res);
sc->sc_otg.sc_io_size = rman_get_size(sc->sc_otg.sc_io_res);
/*
* 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;
device_set_ivars(sc->sc_otg.sc_bus.bdev, &sc->sc_otg.sc_bus);
err = bus_setup_intr(dev, sc->sc_otg.sc_irq_res, INTR_TYPE_TTY | INTR_MPSAFE,
&dwc_otg_filter_interrupt, &dwc_otg_interrupt, sc, &sc->sc_otg.sc_intr_hdl);
if (err) {
sc->sc_otg.sc_intr_hdl = 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),
};
static devclass_t dwc_otg_devclass;
DRIVER_MODULE(dwcotg, simplebus, dwc_otg_driver, dwc_otg_devclass, 0, 0);
MODULE_DEPEND(dwcotg, usb, 1, 1, 1);
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