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/* $OpenBSD: uhci_pci.c,v 1.36 2024/05/24 06:02:58 jsg Exp $ */
/* $NetBSD: uhci_pci.c,v 1.24 2002/10/02 16:51:58 thorpej 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/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/timeout.h>
#include <sys/queue.h>
#include <machine/bus.h>
#include <dev/pci/pcivar.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdivar.h>
#include <dev/usb/uhcireg.h>
#include <dev/usb/uhcivar.h>
int uhci_pci_match(struct device *, void *, void *);
void uhci_pci_attach(struct device *, struct device *, void *);
void uhci_pci_attach_deferred(struct device *);
int uhci_pci_detach(struct device *, int);
int uhci_pci_activate(struct device *, int);
struct uhci_pci_softc {
struct uhci_softc sc;
pci_chipset_tag_t sc_pc;
pcitag_t sc_tag;
void *sc_ih; /* interrupt vectoring */
};
const struct cfattach uhci_pci_ca = {
sizeof(struct uhci_pci_softc), uhci_pci_match, uhci_pci_attach,
uhci_pci_detach, uhci_pci_activate
};
int
uhci_pci_match(struct device *parent, void *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);
}
int
uhci_pci_activate(struct device *self, int act)
{
struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self;
if (sc->sc.sc_size == 0)
return 0;
/* On resume, set legacy support attribute and enable intrs */
switch (act) {
case DVACT_RESUME:
pci_conf_write(sc->sc_pc, sc->sc_tag,
PCI_LEGSUP, PCI_LEGSUP_USBPIRQDEN);
bus_space_barrier(sc->sc.iot, sc->sc.ioh, 0, sc->sc.sc_size,
BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE);
bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0);
break;
}
return uhci_activate(self, act);
}
void
uhci_pci_attach(struct device *parent, struct device *self, void *aux)
{
struct uhci_pci_softc *sc = (struct uhci_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;
const char *vendor;
char *devname = sc->sc.sc_bus.bdev.dv_xname;
int s;
/* 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, 0)) {
printf(": can't map i/o space\n");
return;
}
/* Disable interrupts, so we don't get any spurious ones. */
s = splhardusb();
bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0);
sc->sc_pc = pc;
sc->sc_tag = tag;
sc->sc.sc_bus.dmatag = pa->pa_dmat;
/* Map and establish the interrupt. */
if (pci_intr_map(pa, &ih)) {
printf(": couldn't map interrupt\n");
goto unmap_ret;
}
intrstr = pci_intr_string(pc, ih);
sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, uhci_intr, sc,
devname);
if (sc->sc_ih == NULL) {
printf(": couldn't establish interrupt");
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
goto unmap_ret;
}
printf(": %s\n", intrstr);
/* Set LEGSUP register to its default value. */
pci_conf_write(pc, tag, PCI_LEGSUP, PCI_LEGSUP_USBPIRQDEN);
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;
}
uhci_run(&sc->sc, 0); /* stop the controller */
/* disable interrupts */
bus_space_barrier(sc->sc.iot, sc->sc.ioh, 0, sc->sc.sc_size,
BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE);
bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0);
/* 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));
config_defer(self, uhci_pci_attach_deferred);
/* Ignore interrupts for now */
sc->sc.sc_bus.dying = 1;
splx(s);
return;
unmap_ret:
bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
sc->sc.sc_size = 0;
splx(s);
}
void
uhci_pci_attach_deferred(struct device *self)
{
struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self;
char *devname = sc->sc.sc_bus.bdev.dv_xname;
usbd_status r;
int s;
s = splhardusb();
sc->sc.sc_bus.dying = 0;
r = uhci_init(&sc->sc);
if (r != USBD_NORMAL_COMPLETION) {
printf("%s: init failed, error=%d\n", devname, r);
goto unmap_ret;
}
splx(s);
/* Attach usb device. */
config_found(self, &sc->sc.sc_bus, usbctlprint);
return;
unmap_ret:
bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
pci_intr_disestablish(sc->sc_pc, sc->sc_ih);
sc->sc.sc_size = 0;
splx(s);
}
int
uhci_pci_detach(struct device *self, int flags)
{
struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self;
int rv;
rv = uhci_detach(self, 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);
}
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