freebsd-dev/sys/dev/usb/controller/atmegadci_atmelarm.c
Andrew Thompson ed6d949afd - Make struct usb_xfer opaque so that drivers can not access the internals
- Reduce the number of headers needed for a usb driver, the common case is just   usb.h and usbdi.h
2009-06-23 02:19:59 +00:00

235 lines
6.0 KiB
C

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*-
* Copyright (c) 2009 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/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/atmegadci.h>
#include <sys/rman.h>
static device_probe_t atmegadci_probe;
static device_attach_t atmegadci_attach;
static device_detach_t atmegadci_detach;
static device_shutdown_t atmegadci_shutdown;
struct atmegadci_super_softc {
struct atmegadci_softc sc_otg; /* must be first */
};
static void
atmegadci_clocks_on(struct usb_bus *bus)
{
/* TODO */
}
static void
atmegadci_clocks_off(struct usb_bus *bus)
{
/* TODO */
}
static int
atmegadci_probe(device_t dev)
{
device_set_desc(dev, "ATMEL OTG integrated USB controller");
return (0);
}
static int
atmegadci_attach(device_t dev)
{
struct atmegadci_super_softc *sc = device_get_softc(dev);
int err;
int rid;
/* setup MUSB OTG USB controller interface softc */
sc->sc_otg.sc_clocks_on = &atmegadci_clocks_on;
sc->sc_otg.sc_clocks_off = &atmegadci_clocks_off;
/* 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 = ATMEGA_MAX_DEVICES;
/* 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);
rid = 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)) {
goto error;
}
sc->sc_otg.sc_bus.bdev = device_add_child(dev, "usbus", -1);
if (!(sc->sc_otg.sc_bus.bdev)) {
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_BIO | INTR_MPSAFE,
NULL, (driver_intr_t *)atmegadci_interrupt, sc, &sc->sc_otg.sc_intr_hdl);
if (err) {
sc->sc_otg.sc_intr_hdl = NULL;
goto error;
}
err = atmegadci_init(&sc->sc_otg);
if (!err) {
err = device_probe_and_attach(sc->sc_otg.sc_bus.bdev);
}
if (err) {
goto error;
}
return (0);
error:
atmegadci_detach(dev);
return (ENXIO);
}
static int
atmegadci_detach(device_t dev)
{
struct atmegadci_super_softc *sc = device_get_softc(dev);
device_t bdev;
int err;
if (sc->sc_otg.sc_bus.bdev) {
bdev = sc->sc_otg.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);
if (sc->sc_otg.sc_irq_res && sc->sc_otg.sc_intr_hdl) {
/*
* only call atmegadci_uninit() after atmegadci_init()
*/
atmegadci_uninit(&sc->sc_otg);
err = 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 int
atmegadci_shutdown(device_t dev)
{
struct atmegadci_super_softc *sc = device_get_softc(dev);
int err;
err = bus_generic_shutdown(dev);
if (err)
return (err);
atmegadci_uninit(&sc->sc_otg);
return (0);
}
static device_method_t atmegadci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, atmegadci_probe),
DEVMETHOD(device_attach, atmegadci_attach),
DEVMETHOD(device_detach, atmegadci_detach),
DEVMETHOD(device_shutdown, atmegadci_shutdown),
/* Bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
{0, 0}
};
static driver_t atmegadci_driver = {
"atmegadci",
atmegadci_methods,
sizeof(struct atmegadci_super_softc),
};
static devclass_t atmegadci_devclass;
DRIVER_MODULE(atmegadci, atmelarm, atmegadci_driver, atmegadci_devclass, 0, 0);
MODULE_DEPEND(atmegadci, usb, 1, 1, 1);