289 lines
7.1 KiB
C
289 lines
7.1 KiB
C
/*-
|
|
* Copyright (c) 2008 Sam Leffler. 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.
|
|
*/
|
|
|
|
/*
|
|
* AR71XX attachment driver for the USB Enhanced Host Controller.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "opt_bus.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/rman.h>
|
|
#include <sys/condvar.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
|
|
#include <machine/bus.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/ehci.h>
|
|
#include <dev/usb/controller/ehcireg.h>
|
|
|
|
#include <mips/atheros/ar71xx_bus_space_reversed.h>
|
|
|
|
#define EHCI_HC_DEVSTR "AR71XX Integrated USB 2.0 controller"
|
|
|
|
struct ar71xx_ehci_softc {
|
|
ehci_softc_t base; /* storage for EHCI code */
|
|
};
|
|
|
|
static device_attach_t ar71xx_ehci_attach;
|
|
static device_detach_t ar71xx_ehci_detach;
|
|
static device_shutdown_t ar71xx_ehci_shutdown;
|
|
static device_suspend_t ar71xx_ehci_suspend;
|
|
static device_resume_t ar71xx_ehci_resume;
|
|
|
|
bs_r_1_proto(reversed);
|
|
bs_w_1_proto(reversed);
|
|
|
|
static int
|
|
ar71xx_ehci_suspend(device_t self)
|
|
{
|
|
ehci_softc_t *sc = device_get_softc(self);
|
|
int err;
|
|
|
|
err = bus_generic_suspend(self);
|
|
if (err)
|
|
return (err);
|
|
ehci_suspend(sc);
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ar71xx_ehci_resume(device_t self)
|
|
{
|
|
ehci_softc_t *sc = device_get_softc(self);
|
|
|
|
ehci_resume(sc);
|
|
|
|
bus_generic_resume(self);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ar71xx_ehci_shutdown(device_t self)
|
|
{
|
|
ehci_softc_t *sc = device_get_softc(self);
|
|
int err;
|
|
|
|
err = bus_generic_shutdown(self);
|
|
if (err)
|
|
return (err);
|
|
ehci_shutdown(sc);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ar71xx_ehci_probe(device_t self)
|
|
{
|
|
|
|
device_set_desc(self, EHCI_HC_DEVSTR);
|
|
|
|
return (BUS_PROBE_DEFAULT);
|
|
}
|
|
|
|
static int
|
|
ar71xx_ehci_attach(device_t self)
|
|
{
|
|
struct ar71xx_ehci_softc *isc = device_get_softc(self);
|
|
ehci_softc_t *sc = &isc->base;
|
|
int err;
|
|
int rid;
|
|
|
|
/* initialise some bus fields */
|
|
sc->sc_bus.parent = self;
|
|
sc->sc_bus.devices = sc->sc_devices;
|
|
sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
|
|
|
|
/* get all DMA memory */
|
|
if (usb_bus_mem_alloc_all(&sc->sc_bus,
|
|
USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
|
|
return (ENOMEM);
|
|
}
|
|
|
|
sc->sc_bus.usbrev = USB_REV_2_0;
|
|
|
|
/* NB: hints fix the memory location and irq */
|
|
|
|
rid = 0;
|
|
sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid, RF_ACTIVE);
|
|
if (!sc->sc_io_res) {
|
|
device_printf(self, "Could not map memory\n");
|
|
goto error;
|
|
}
|
|
|
|
/*
|
|
* Craft special resource for bus space ops that handle
|
|
* byte-alignment of non-word addresses.
|
|
*/
|
|
sc->sc_io_tag = ar71xx_bus_space_reversed;
|
|
sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
|
|
sc->sc_io_size = rman_get_size(sc->sc_io_res);
|
|
|
|
rid = 0;
|
|
sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
|
|
RF_ACTIVE);
|
|
if (sc->sc_irq_res == NULL) {
|
|
device_printf(self, "Could not allocate irq\n");
|
|
goto error;
|
|
}
|
|
sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
|
|
if (!sc->sc_bus.bdev) {
|
|
device_printf(self, "Could not add USB device\n");
|
|
goto error;
|
|
}
|
|
device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
|
|
device_set_desc(sc->sc_bus.bdev, EHCI_HC_DEVSTR);
|
|
|
|
sprintf(sc->sc_vendor, "Atheros");
|
|
|
|
|
|
err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
|
|
NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
|
|
if (err) {
|
|
device_printf(self, "Could not setup irq, %d\n", err);
|
|
sc->sc_intr_hdl = NULL;
|
|
goto error;
|
|
}
|
|
|
|
/*
|
|
* Arrange to force Host mode, select big-endian byte alignment,
|
|
* and arrange to not terminate reset operations (the adapter
|
|
* will ignore it if we do but might as well save a reg write).
|
|
* Also, the controller has an embedded Transaction Translator
|
|
* which means port speed must be read from the Port Status
|
|
* register following a port enable.
|
|
*/
|
|
sc->sc_flags = EHCI_SCFLG_SETMODE;
|
|
(void) ehci_reset(sc);
|
|
|
|
err = ehci_init(sc);
|
|
if (!err) {
|
|
err = device_probe_and_attach(sc->sc_bus.bdev);
|
|
}
|
|
if (err) {
|
|
device_printf(self, "USB init failed err=%d\n", err);
|
|
goto error;
|
|
}
|
|
return (0);
|
|
|
|
error:
|
|
ar71xx_ehci_detach(self);
|
|
return (ENXIO);
|
|
}
|
|
|
|
static int
|
|
ar71xx_ehci_detach(device_t self)
|
|
{
|
|
struct ar71xx_ehci_softc *isc = device_get_softc(self);
|
|
ehci_softc_t *sc = &isc->base;
|
|
device_t bdev;
|
|
int err;
|
|
|
|
if (sc->sc_bus.bdev) {
|
|
bdev = sc->sc_bus.bdev;
|
|
device_detach(bdev);
|
|
device_delete_child(self, bdev);
|
|
}
|
|
/* during module unload there are lots of children leftover */
|
|
device_delete_all_children(self);
|
|
|
|
/*
|
|
* disable interrupts that might have been switched on in ehci_init
|
|
*/
|
|
if (sc->sc_io_res) {
|
|
EWRITE4(sc, EHCI_USBINTR, 0);
|
|
}
|
|
|
|
if (sc->sc_irq_res && sc->sc_intr_hdl) {
|
|
/*
|
|
* only call ehci_detach() after ehci_init()
|
|
*/
|
|
ehci_detach(sc);
|
|
|
|
err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
|
|
|
|
if (err)
|
|
/* XXX or should we panic? */
|
|
device_printf(self, "Could not tear down irq, %d\n",
|
|
err);
|
|
sc->sc_intr_hdl = NULL;
|
|
}
|
|
|
|
if (sc->sc_irq_res) {
|
|
bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res);
|
|
sc->sc_irq_res = NULL;
|
|
}
|
|
if (sc->sc_io_res) {
|
|
bus_release_resource(self, SYS_RES_MEMORY, 0,
|
|
sc->sc_io_res);
|
|
sc->sc_io_res = NULL;
|
|
}
|
|
usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static device_method_t ehci_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, ar71xx_ehci_probe),
|
|
DEVMETHOD(device_attach, ar71xx_ehci_attach),
|
|
DEVMETHOD(device_detach, ar71xx_ehci_detach),
|
|
DEVMETHOD(device_suspend, ar71xx_ehci_suspend),
|
|
DEVMETHOD(device_resume, ar71xx_ehci_resume),
|
|
DEVMETHOD(device_shutdown, ar71xx_ehci_shutdown),
|
|
|
|
/* Bus interface */
|
|
DEVMETHOD(bus_print_child, bus_generic_print_child),
|
|
|
|
{0, 0}
|
|
};
|
|
|
|
static driver_t ehci_driver = {
|
|
"ehci",
|
|
ehci_methods,
|
|
sizeof(struct ar71xx_ehci_softc),
|
|
};
|
|
|
|
static devclass_t ehci_devclass;
|
|
|
|
DRIVER_MODULE(ehci, nexus, ehci_driver, ehci_devclass, 0, 0);
|
|
MODULE_DEPEND(ehci, usb, 1, 1, 1);
|