/* $NetBSD: ralink_ehci.c,v 1.7 2018/04/09 16:21:10 jakllsch Exp $ */
/*-
* Copyright (c) 2011 CradlePoint Technology, Inc.
* 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 CRADLEPOINT TECHNOLOGY, INC. 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.
*/
/* ralink_ehci.c -- Ralink EHCI USB Driver */
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ralink_ehci.c,v 1.7 2018/04/09 16:21:10 jakllsch Exp $");
#include <sys/param.h>
#include <sys/bus.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdivar.h>
#include <dev/usb/usb_mem.h>
#include <dev/usb/ehcireg.h>
#include <dev/usb/ehcivar.h>
#include <mips/ralink/ralink_usbhcvar.h>
#include <mips/ralink/ralink_var.h>
#include <mips/ralink/ralink_reg.h>
struct ralink_ehci_softc {
struct ehci_softc sc_ehci;
void *sc_ih;
};
static int ralink_ehci_match(device_t, cfdata_t, void *);
static void ralink_ehci_attach(device_t, device_t, void *);
static int ralink_ehci_detach(device_t, int);
CFATTACH_DECL2_NEW(ralink_ehci, sizeof(struct ralink_ehci_softc),
ralink_ehci_match, ralink_ehci_attach, ralink_ehci_detach,
ehci_activate, NULL, ehci_childdet);
static TAILQ_HEAD(, ralink_usb_hc) ralink_usb_alldevs =
TAILQ_HEAD_INITIALIZER(ralink_usb_alldevs);
#if 0
struct usb_hc_alldevs ralink_usb_alldevs = TAILQ_HEAD_INITIALIZER(ralink_usb_alldevs);
#endif
/*
* ralink_ehci_match
*/
static int
ralink_ehci_match(device_t parent, cfdata_t cf, void *aux)
{
return 1;
}
/*
* ralink_ehci_attach
*/
static void
ralink_ehci_attach(device_t parent, device_t self, void *aux)
{
struct ralink_ehci_softc * const sc = device_private(self);
const struct mainbus_attach_args *ma = aux;
struct ralink_usb_hc *ruh;
int error;
aprint_naive(": EHCI USB controller\n");
aprint_normal(": EHCI USB controller\n");
sc->sc_ehci.sc_dev = self;
sc->sc_ehci.sc_bus.ub_hcpriv = sc;
sc->sc_ehci.iot = ma->ma_memt;
sc->sc_ehci.sc_bus.ub_dmatag = ma->ma_dmat;
/* Map EHCI registers */
if ((error = bus_space_map(sc->sc_ehci.iot, RA_USB_EHCI_BASE,
RA_USB_BLOCK_SIZE, 0, &sc->sc_ehci.ioh)) != 0) {
aprint_error_dev(self, "can't map EHCI registers, "
"error=%d\n", error);
return;
}
sc->sc_ehci.sc_size = RA_USB_BLOCK_SIZE;
sc->sc_ehci.sc_bus.ub_revision = USBREV_2_0;
#if defined(RALINK_EHCI_DEBUG)
aprint_normal_dev(self, "sc %p ma %p\n", sc, ma);
aprint_normal_dev(self, "memt %p dmat %p\n", ma->ma_memt, ma->ma_dmat);
aprint_normal_dev(self, "EHCI HCCAPBASE=%#x\n",
EREAD4(&sc->sc_ehci, EHCI_CAPLENGTH));
aprint_normal_dev(self, "EHCI HCSPARAMS=%#x\n",
EREAD4(&sc->sc_ehci, EHCI_HCSPARAMS));
aprint_normal_dev(self, "EHCI HCCPARAMS=%#x\n",
EREAD4(&sc->sc_ehci, EHCI_HCCPARAMS));
aprint_normal_dev(self, "EHCI HCSP_PORTROUTE=%#x\n",
EREAD4(&sc->sc_ehci, EHCI_HCSP_PORTROUTE));
#endif
/* Disable EHCI interrupts. */
sc->sc_ehci.sc_offs = EREAD1(&sc->sc_ehci, EHCI_CAPLENGTH);
EOWRITE4(&sc->sc_ehci, EHCI_USBINTR, 0);
#if defined(RALINK_EHCI_DEBUG)
aprint_normal_dev(self, "EHCI USBCMD=%#x USBSTS=%#x USBINTR=%#x\n",
EOREAD4(&sc->sc_ehci, EHCI_USBCMD),
EOREAD4(&sc->sc_ehci, EHCI_USBSTS),
EOREAD4(&sc->sc_ehci, EHCI_USBINTR));
#endif
/* Establish the MIPS level interrupt */
sc->sc_ih = ra_intr_establish(RA_IRQ_USB, ehci_intr, sc, 1);
if (sc->sc_ih == NULL) {
aprint_error_dev(self, "unable to establish irq %d\n",
RA_IRQ_USB);
goto fail_0;
}
/*
* Find companion controllers. According to the spec they always
* have lower function numbers so they should be enumerated already.
*/
int ncomp = 0;
TAILQ_FOREACH(ruh, &ralink_usb_alldevs, next) {
aprint_normal_dev(self, "companion %s\n",
device_xname(ruh->usb));
sc->sc_ehci.sc_comps[ncomp++] = ruh->usb;
if (ncomp >= EHCI_COMPANION_MAX)
break;
}
sc->sc_ehci.sc_ncomp = ncomp;
/* Initialize EHCI */
int err = ehci_init(&sc->sc_ehci);
if (err) {
aprint_error_dev(self, "init failed, error=%d\n", err);
goto fail_1;
}
if (!pmf_device_register1(self, ehci_suspend, ehci_resume,
ehci_shutdown))
aprint_error_dev(self, "couldn't establish power handler\n");
/* Attach usb device. */
sc->sc_ehci.sc_child = config_found(self, &sc->sc_ehci.sc_bus,
usbctlprint);
return;
fail_1:
ra_intr_disestablish(sc->sc_ih);
sc->sc_ih = NULL;
fail_0:
bus_space_unmap(sc->sc_ehci.iot, sc->sc_ehci.ioh, sc->sc_ehci.sc_size);
sc->sc_ehci.sc_size = 0;
}
static int
ralink_ehci_detach(device_t self, int flags)
{
struct ralink_ehci_softc * const sc = device_private(self);
int rv;
pmf_device_deregister(self);
rv = ehci_detach(&sc->sc_ehci, flags);
if (rv)
return rv;
if (sc->sc_ih != NULL) {
ra_intr_disestablish(sc->sc_ih);
sc->sc_ih = NULL;
}
if (sc->sc_ehci.sc_size != 0) {
bus_space_unmap(sc->sc_ehci.iot, sc->sc_ehci.ioh,
sc->sc_ehci.sc_size);
sc->sc_ehci.sc_size = 0;
}
return 0;
}
void
ralink_usb_hc_add(struct ralink_usb_hc *ruh, device_t usbp)
{
TAILQ_INSERT_TAIL(&ralink_usb_alldevs, ruh, next);
ruh->usb = usbp;
}
void
ralink_usb_hc_rem(struct ralink_usb_hc *ruh)
{
TAILQ_REMOVE(&ralink_usb_alldevs, ruh, next);
}