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/*-
* Copyright (c) 2006 M. Warner Losh. 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 ``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 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/stdint.h>
#include <sys/stddef.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/linker_set.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/sysctl.h>
#include <sys/sx.h>
#include <sys/unistd.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/priv.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/ohci.h>
#include <sys/rman.h>
#include <arm/at91/at91_pmcvar.h>
#define MEM_RID 0
static device_probe_t ohci_atmelarm_probe;
static device_attach_t ohci_atmelarm_attach;
static device_detach_t ohci_atmelarm_detach;
struct at91_ohci_softc {
struct ohci_softc sc_ohci; /* must be first */
struct at91_pmc_clock *iclk;
struct at91_pmc_clock *fclk;
};
static int
ohci_atmelarm_probe(device_t dev)
{
device_set_desc(dev, "AT91 integrated OHCI controller");
return (BUS_PROBE_DEFAULT);
}
static int
ohci_atmelarm_attach(device_t dev)
{
struct at91_ohci_softc *sc = device_get_softc(dev);
int err;
int rid;
/* initialise some bus fields */
sc->sc_ohci.sc_bus.parent = dev;
sc->sc_ohci.sc_bus.devices = sc->sc_ohci.sc_devices;
sc->sc_ohci.sc_bus.devices_max = OHCI_MAX_DEVICES;
/* get all DMA memory */
if (usb_bus_mem_alloc_all(&sc->sc_ohci.sc_bus,
USB_GET_DMA_TAG(dev), &ohci_iterate_hw_softc)) {
return (ENOMEM);
}
sc->iclk = at91_pmc_clock_ref("ohci_clk");
sc->fclk = at91_pmc_clock_ref("uhpck");
sc->sc_ohci.sc_dev = dev;
rid = MEM_RID;
sc->sc_ohci.sc_io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&rid, RF_ACTIVE);
if (!(sc->sc_ohci.sc_io_res)) {
err = ENOMEM;
goto error;
}
sc->sc_ohci.sc_io_tag = rman_get_bustag(sc->sc_ohci.sc_io_res);
sc->sc_ohci.sc_io_hdl = rman_get_bushandle(sc->sc_ohci.sc_io_res);
sc->sc_ohci.sc_io_size = rman_get_size(sc->sc_ohci.sc_io_res);
rid = 0;
sc->sc_ohci.sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_ACTIVE);
if (!(sc->sc_ohci.sc_irq_res)) {
goto error;
}
sc->sc_ohci.sc_bus.bdev = device_add_child(dev, "usbus", -1);
if (!(sc->sc_ohci.sc_bus.bdev)) {
goto error;
}
device_set_ivars(sc->sc_ohci.sc_bus.bdev, &sc->sc_ohci.sc_bus);
strlcpy(sc->sc_ohci.sc_vendor, "Atmel", sizeof(sc->sc_ohci.sc_vendor));
#if (__FreeBSD_version >= 700031)
err = bus_setup_intr(dev, sc->sc_ohci.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
NULL, (driver_intr_t *)ohci_interrupt, sc, &sc->sc_ohci.sc_intr_hdl);
#else
err = bus_setup_intr(dev, sc->sc_ohci.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
(driver_intr_t *)ohci_interrupt, sc, &sc->sc_ohci.sc_intr_hdl);
#endif
if (err) {
sc->sc_ohci.sc_intr_hdl = NULL;
goto error;
}
/*
* turn on the clocks from the AT91's point of view. Keep the unit in reset.
*/
at91_pmc_clock_enable(sc->iclk);
at91_pmc_clock_enable(sc->fclk);
bus_space_write_4(sc->sc_ohci.sc_io_tag, sc->sc_ohci.sc_io_hdl,
OHCI_CONTROL, 0);
err = ohci_init(&sc->sc_ohci);
if (!err) {
err = device_probe_and_attach(sc->sc_ohci.sc_bus.bdev);
}
if (err) {
goto error;
}
return (0);
error:
ohci_atmelarm_detach(dev);
return (ENXIO);
}
static int
ohci_atmelarm_detach(device_t dev)
{
struct at91_ohci_softc *sc = device_get_softc(dev);
device_t bdev;
int err;
if (sc->sc_ohci.sc_bus.bdev) {
bdev = sc->sc_ohci.sc_bus.bdev;
device_detach(bdev);
device_delete_child(dev, bdev);
}
/* during module unload there are lots of children leftover */
device_delete_all_children(dev);
/*
* Put the controller into reset, then disable clocks and do
* the MI tear down. We have to disable the clocks/hardware
* after we do the rest of the teardown. We also disable the
* clocks in the opposite order we acquire them, but that
* doesn't seem to be absolutely necessary. We free up the
* clocks after we disable them, so the system could, in
* theory, reuse them.
*/
bus_space_write_4(sc->sc_ohci.sc_io_tag, sc->sc_ohci.sc_io_hdl,
OHCI_CONTROL, 0);
at91_pmc_clock_disable(sc->fclk);
at91_pmc_clock_disable(sc->iclk);
at91_pmc_clock_deref(sc->fclk);
at91_pmc_clock_deref(sc->iclk);
if (sc->sc_ohci.sc_irq_res && sc->sc_ohci.sc_intr_hdl) {
/*
* only call ohci_detach() after ohci_init()
*/
ohci_detach(&sc->sc_ohci);
err = bus_teardown_intr(dev, sc->sc_ohci.sc_irq_res, sc->sc_ohci.sc_intr_hdl);
sc->sc_ohci.sc_intr_hdl = NULL;
}
if (sc->sc_ohci.sc_irq_res) {
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_ohci.sc_irq_res);
sc->sc_ohci.sc_irq_res = NULL;
}
if (sc->sc_ohci.sc_io_res) {
bus_release_resource(dev, SYS_RES_MEMORY, MEM_RID,
sc->sc_ohci.sc_io_res);
sc->sc_ohci.sc_io_res = NULL;
}
usb_bus_mem_free_all(&sc->sc_ohci.sc_bus, &ohci_iterate_hw_softc);
return (0);
}
static device_method_t ohci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ohci_atmelarm_probe),
DEVMETHOD(device_attach, ohci_atmelarm_attach),
DEVMETHOD(device_detach, ohci_atmelarm_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
/* Bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
{0, 0}
};
static driver_t ohci_driver = {
"ohci",
ohci_methods,
sizeof(struct at91_ohci_softc),
};
static devclass_t ohci_devclass;
DRIVER_MODULE(ohci, atmelarm, ohci_driver, ohci_devclass, 0, 0);
MODULE_DEPEND(ohci, usb, 1, 1, 1);
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