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/* $OpenBSD: omehci.c,v 1.7 2011/10/24 22:49:07 drahn Exp $ */
/*
* Copyright (c) 2005 David Gwynne <dlg@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/kernel.h>
#include <sys/rwlock.h>
#include <sys/timeout.h>
#include <machine/intr.h>
#include <machine/bus.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdivar.h>
#include <dev/usb/usb_mem.h>
#include <arch/beagle/beagle/ahb.h>
#include <beagle/dev/prcmvar.h>
#include <dev/usb/ehcireg.h>
#include <dev/usb/ehcivar.h>
#define EHCI_HCPCAPBASE 0x48064800
int omehci_match(struct device *, void *, void *);
void omehci_attach(struct device *, struct device *, void *);
int omehci_detach(struct device *, int);
int omehci_activate(struct device *, int);
struct omehci_softc {
ehci_softc_t sc;
void *sc_ih;
};
void omehci_enable(struct omehci_softc *);
void omehci_disable(struct omehci_softc *);
struct cfattach omehci_ca = {
sizeof (struct omehci_softc), omehci_match, omehci_attach,
omehci_detach, omehci_activate
};
int
omehci_match(struct device *parent, void *match, void *aux)
{
struct ahb_attach_args *aa = aux;
switch (board_id) {
case BOARD_ID_OMAP3_BEAGLE:
break; /* continue trying */
case BOARD_ID_OMAP4_PANDA:
return 0; /* not ported yet ??? - different */
default:
return 0; /* unknown */
}
if (aa->aa_addr != EHCI_HCPCAPBASE)
return 0;
return (1);
}
void
omehci_attach(struct device *parent, struct device *self, void *aux)
{
struct omehci_softc *sc = (struct omehci_softc *)self;
struct ahb_attach_args *aa = aux;
usbd_status r;
char *devname = sc->sc.sc_bus.bdev.dv_xname;
sc->sc.iot = aa->aa_iot;
sc->sc.sc_bus.dmatag = aa->aa_dmat;
sc->sc.sc_size = 0;
/* Map I/O space */
if (bus_space_map(sc->sc.iot, aa->aa_addr, aa->aa_size, 0,
&sc->sc.ioh)) {
printf(": cannot map mem space\n");
return;
}
sc->sc.sc_size = aa->aa_size;
/* XXX copied from ohci_pci.c. needed? */
bus_space_barrier(sc->sc.iot, sc->sc.ioh, 0, sc->sc.sc_size,
BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE);
prcm_enableclock(PRCM_CLK_EN_USB);
#if 0
omehci_enable(sc);
#endif
/* Disable interrupts, so we don't get any spurious ones. */
sc->sc.sc_offs = EREAD1(&sc->sc, EHCI_CAPLENGTH);
EOWRITE2(&sc->sc, EHCI_USBINTR, 0);
sc->sc_ih = arm_intr_establish(aa->aa_intr, IPL_USB,
ehci_intr, &sc->sc, devname);
if (sc->sc_ih == NULL) {
printf(": unable to establish interrupt\n");
#if 0
omehci_disable(sc);
#endif
#if 0
prcm_disableclock(PRCM_CLK_EN_USB);
#endif
bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
sc->sc.sc_size = 0;
return;
}
strlcpy(sc->sc.sc_vendor, "OMAP3[45]xx", sizeof(sc->sc.sc_vendor));
r = ehci_init(&sc->sc);
if (r != USBD_NORMAL_COMPLETION) {
printf("%s: init failed, error=%d\n", devname);
arm_intr_disestablish(sc->sc_ih);
sc->sc_ih = NULL;
bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
#if 0
prcm_disableclock(PRCM_CLK_EN_USB);
#endif
sc->sc.sc_size = 0;
return;
}
sc->sc.sc_shutdownhook = shutdownhook_establish(ehci_shutdown, &sc->sc);
sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus,
usbctlprint);
}
int
omehci_detach(struct device *self, int flags)
{
struct omehci_softc *sc = (struct omehci_softc *)self;
int rv;
rv = ehci_detach(&sc->sc, flags);
if (rv)
return (rv);
if (sc->sc_ih != NULL) {
arm_intr_disestablish(sc->sc_ih);
sc->sc_ih = NULL;
}
if (sc->sc.sc_size) {
bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
sc->sc.sc_size = 0;
}
/* stop clock */
#if 0
prcm_disableclock(PRCM_CLK_EN_USB);
#endif
return (0);
}
int
omehci_activate(struct device *self, int act)
{
struct omehci_softc *sc = (struct omehci_softc *)self;
switch (act) {
case DVACT_SUSPEND:
sc->sc.sc_bus.use_polling++;
#if 0
ohci_activate(&sc->sc, act);
prcm_disableclock(PRCM_CLK_EN_USB);
#endif
sc->sc.sc_bus.use_polling--;
break;
case DVACT_RESUME:
sc->sc.sc_bus.use_polling++;
prcm_enableclock(PRCM_CLK_EN_USB);
#if 0
omehci_enable(sc);
ohci_activate(&sc->sc, act);
#endif
sc->sc.sc_bus.use_polling--;
break;
}
return 0;
}
#if 0
void
omehci_enable(struct omehci_softc *sc)
{
u_int32_t hr;
/* Full host reset */
hr = bus_space_read_4(sc->sc.iot, sc->sc.ioh, USBHC_HR);
bus_space_write_4(sc->sc.iot, sc->sc.ioh, USBHC_HR,
(hr & USBHC_HR_MASK) | USBHC_HR_FHR);
DELAY(USBHC_RST_WAIT);
hr = bus_space_read_4(sc->sc.iot, sc->sc.ioh, USBHC_HR);
bus_space_write_4(sc->sc.iot, sc->sc.ioh, USBHC_HR,
(hr & USBHC_HR_MASK) & ~(USBHC_HR_FHR));
/* Force system bus interface reset */
hr = bus_space_read_4(sc->sc.iot, sc->sc.ioh, USBHC_HR);
bus_space_write_4(sc->sc.iot, sc->sc.ioh, USBHC_HR,
(hr & USBHC_HR_MASK) | USBHC_HR_FSBIR);
while (bus_space_read_4(sc->sc.iot, sc->sc.ioh, USBHC_HR) & \
USBHC_HR_FSBIR)
DELAY(3);
/* Enable the ports (physically only one, only enable that one?) */
hr = bus_space_read_4(sc->sc.iot, sc->sc.ioh, USBHC_HR);
bus_space_write_4(sc->sc.iot, sc->sc.ioh, USBHC_HR,
(hr & USBHC_HR_MASK) & ~(USBHC_HR_SSE));
hr = bus_space_read_4(sc->sc.iot, sc->sc.ioh, USBHC_HR);
bus_space_write_4(sc->sc.iot, sc->sc.ioh, USBHC_HR,
(hr & USBHC_HR_MASK) & ~(USBHC_HR_SSEP2));
}
void
omehci_disable(struct omehci_softc *sc)
{
u_int32_t hr;
/* Full host reset */
hr = bus_space_read_4(sc->sc.iot, sc->sc.ioh, USBHC_HR);
bus_space_write_4(sc->sc.iot, sc->sc.ioh, USBHC_HR,
(hr & USBHC_HR_MASK) | USBHC_HR_FHR);
DELAY(USBHC_RST_WAIT);
hr = bus_space_read_4(sc->sc.iot, sc->sc.ioh, USBHC_HR);
bus_space_write_4(sc->sc.iot, sc->sc.ioh, USBHC_HR,
(hr & USBHC_HR_MASK) & ~(USBHC_HR_FHR));
}
#endif
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