NetBSD/sys/dev/pci/ehci_pci.c

226 lines
6.9 KiB
C

/* $NetBSD: ehci_pci.c,v 1.16 2004/08/02 18:43:38 mycroft Exp $ */
/*
* Copyright (c) 2001, 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson (lennart@augustsson.net).
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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: ehci_pci.c,v 1.16 2004/08/02 18:43:38 mycroft Exp $");
#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 <machine/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/ehcireg.h>
#include <dev/usb/ehcivar.h>
#ifdef EHCI_DEBUG
#define DPRINTF(x) if (ehcidebug) printf x
extern int ehcidebug;
#else
#define DPRINTF(x)
#endif
int ehci_pci_match(struct device *, struct cfdata *, void *);
void ehci_pci_attach(struct device *, struct device *, void *);
int ehci_pci_detach(device_ptr_t, int);
struct ehci_pci_softc {
ehci_softc_t sc;
pci_chipset_tag_t sc_pc;
pcitag_t sc_tag;
void *sc_ih; /* interrupt vectoring */
};
CFATTACH_DECL(ehci_pci, sizeof(struct ehci_pci_softc),
ehci_pci_match, ehci_pci_attach, ehci_pci_detach, ehci_activate);
int
ehci_pci_match(struct device *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_EHCI)
return (1);
return (0);
}
void
ehci_pci_attach(struct device *parent, struct device *self, void *aux)
{
struct ehci_pci_softc *sc = (struct ehci_pci_softc *)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;
const char *devname = sc->sc.sc_bus.bdev.dv_xname;
char devinfo[256];
usbd_status r;
int ncomp;
struct usb_pci *up;
aprint_naive(": USB controller\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_CBMEM, PCI_MAPREG_TYPE_MEM, 0,
&sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size)) {
aprint_error("%s: can't map memory space\n", devname);
return;
}
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);
/* Disable interrupts, so we don't get any spurious ones. */
sc->sc.sc_offs = EREAD1(&sc->sc, EHCI_CAPLENGTH);
DPRINTF(("%s: offs=%d\n", devname, sc->sc.sc_offs));
EOWRITE2(&sc->sc, EHCI_USBINTR, 0);
/* Map and establish the interrupt. */
if (pci_intr_map(pa, &ih)) {
aprint_error("%s: couldn't map interrupt\n", devname);
return;
}
intrstr = pci_intr_string(pc, ih);
sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, ehci_intr, sc);
if (sc->sc_ih == NULL) {
aprint_error("%s: couldn't establish interrupt", devname);
if (intrstr != NULL)
aprint_normal(" at %s", intrstr);
aprint_normal("\n");
return;
}
aprint_normal("%s: interrupting at %s\n", devname, intrstr);
switch(pci_conf_read(pc, tag, PCI_USBREV) & PCI_USBREV_MASK) {
case PCI_USBREV_PRE_1_0:
case PCI_USBREV_1_0:
case PCI_USBREV_1_1:
sc->sc.sc_bus.usbrev = USBREV_UNKNOWN;
aprint_normal("%s: pre-2.0 USB rev\n", devname);
return;
case PCI_USBREV_2_0:
sc->sc.sc_bus.usbrev = USBREV_2_0;
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));
/*
* Find companion controllers. According to the spec they always
* have lower function numbers so they should be enumerated already.
*/
ncomp = 0;
TAILQ_FOREACH(up, &ehci_pci_alldevs, next) {
if (up->bus == pa->pa_bus && up->device == pa->pa_device) {
DPRINTF(("ehci_pci_attach: companion %s\n",
USBDEVNAME(up->usb->bdev)));
sc->sc.sc_comps[ncomp++] = up->usb;
if (ncomp >= EHCI_COMPANION_MAX)
break;
}
}
sc->sc.sc_ncomp = ncomp;
r = ehci_init(&sc->sc);
if (r != USBD_NORMAL_COMPLETION) {
aprint_error("%s: init failed, error=%d\n", devname, r);
return;
}
/* Attach usb device. */
sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus,
usbctlprint);
}
int
ehci_pci_detach(device_ptr_t self, int flags)
{
struct ehci_pci_softc *sc = (struct ehci_pci_softc *)self;
int rv;
rv = ehci_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;
}
return (0);
}