NetBSD-5.0.2/sys/dev/pci/uhci_pci.c
/* $NetBSD: uhci_pci.c,v 1.44 2008/04/28 20:23:55 martin Exp $ */
/*
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson (lennart@augustsson.net) at
* Carlstedt Research & Technology.
*
* 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 NETBSD FOUNDATION, 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 FOUNDATION 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uhci_pci.c,v 1.44 2008/04/28 20:23:55 martin Exp $");
#include "ehci.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/queue.h>
#include <sys/bus.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/usb_pci.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/uhcireg.h>
#include <dev/usb/uhcivar.h>
static bool uhci_pci_resume(device_t PMF_FN_PROTO);
struct uhci_pci_softc {
uhci_softc_t sc;
#if NEHCI > 0
struct usb_pci sc_pci;
#endif
pci_chipset_tag_t sc_pc;
pcitag_t sc_tag;
void *sc_ih; /* interrupt vectoring */
};
static int
uhci_pci_match(device_t parent, struct cfdata *match, void *aux)
{
struct pci_attach_args *pa = (struct pci_attach_args *) aux;
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS &&
PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB &&
PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_UHCI)
return (1);
return (0);
}
static void
uhci_pci_attach(device_t parent, device_t self, void *aux)
{
struct uhci_pci_softc *sc = device_private(self);
struct pci_attach_args *pa = (struct pci_attach_args *)aux;
pci_chipset_tag_t pc = pa->pa_pc;
pcitag_t tag = pa->pa_tag;
char const *intrstr;
pci_intr_handle_t ih;
pcireg_t csr;
const char *vendor;
char devinfo[256];
usbd_status r;
int s;
sc->sc.sc_dev = self;
sc->sc.sc_bus.hci_private = sc;
aprint_naive("\n");
pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
aprint_normal(": %s (rev. 0x%02x)\n",
devinfo, PCI_REVISION(pa->pa_class));
/* Map I/O registers */
if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
&sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size)) {
aprint_error_dev(self, "can't map i/o space\n");
return;
}
/*
* Disable interrupts, so we don't get any spurious ones.
* Acknowledge all pending interrupts.
*/
bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0);
bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_STS,
bus_space_read_2(sc->sc.iot, sc->sc.ioh, UHCI_STS));
sc->sc_pc = pc;
sc->sc_tag = tag;
sc->sc.sc_bus.dmatag = pa->pa_dmat;
/* Enable the device. */
csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG,
csr | PCI_COMMAND_MASTER_ENABLE);
/* Map and establish the interrupt. */
if (pci_intr_map(pa, &ih)) {
aprint_error_dev(self, "couldn't map interrupt\n");
return;
}
intrstr = pci_intr_string(pc, ih);
sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, uhci_intr, sc);
if (sc->sc_ih == NULL) {
aprint_error_dev(self, "couldn't establish interrupt");
if (intrstr != NULL)
aprint_normal(" at %s", intrstr);
aprint_normal("\n");
return;
}
aprint_normal_dev(self, "interrupting at %s\n", intrstr);
/*
* Set LEGSUP register to its default value.
* This can re-enable or trigger interrupts, so protect against
* them and explicitly disable and ACK them afterwards.
*/
s = splhardusb();
pci_conf_write(pc, tag, PCI_LEGSUP, PCI_LEGSUP_USBPIRQDEN);
bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0);
bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_STS,
bus_space_read_2(sc->sc.iot, sc->sc.ioh, UHCI_STS));
splx(s);
switch(pci_conf_read(pc, tag, PCI_USBREV) & PCI_USBREV_MASK) {
case PCI_USBREV_PRE_1_0:
sc->sc.sc_bus.usbrev = USBREV_PRE_1_0;
break;
case PCI_USBREV_1_0:
sc->sc.sc_bus.usbrev = USBREV_1_0;
break;
case PCI_USBREV_1_1:
sc->sc.sc_bus.usbrev = USBREV_1_1;
break;
default:
sc->sc.sc_bus.usbrev = USBREV_UNKNOWN;
break;
}
/* Figure out vendor for root hub descriptor. */
vendor = pci_findvendor(pa->pa_id);
sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id);
if (vendor)
strlcpy(sc->sc.sc_vendor, vendor, sizeof(sc->sc.sc_vendor));
else
snprintf(sc->sc.sc_vendor, sizeof(sc->sc.sc_vendor),
"vendor 0x%04x", PCI_VENDOR(pa->pa_id));
r = uhci_init(&sc->sc);
if (r != USBD_NORMAL_COMPLETION) {
aprint_error_dev(self, "init failed, error=%d\n", r);
return;
}
#if NEHCI > 0
usb_pci_add(&sc->sc_pci, pa, self);
#endif
if (!pmf_device_register(self, uhci_suspend, uhci_pci_resume))
aprint_error_dev(self, "couldn't establish power handler\n");
/* Attach usb device. */
sc->sc.sc_child = config_found(self, &sc->sc.sc_bus, usbctlprint);
}
static int
uhci_pci_detach(device_t self, int flags)
{
struct uhci_pci_softc *sc = device_private(self);
int rv;
pmf_device_deregister(self);
rv = uhci_detach(&sc->sc, flags);
if (rv)
return (rv);
if (sc->sc_ih != NULL) {
pci_intr_disestablish(sc->sc_pc, 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;
}
#if NEHCI > 0
usb_pci_rem(&sc->sc_pci);
#endif
return (0);
}
static bool
uhci_pci_resume(device_t dv PMF_FN_ARGS)
{
struct uhci_pci_softc *sc = device_private(dv);
/* Set LEGSUP register to its default value. */
pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_LEGSUP,
PCI_LEGSUP_USBPIRQDEN);
return uhci_resume(dv PMF_FN_CALL);
}
CFATTACH_DECL2_NEW(uhci_pci, sizeof(struct uhci_pci_softc),
uhci_pci_match, uhci_pci_attach, uhci_pci_detach, uhci_activate,
NULL, uhci_childdet);