140 lines
4.4 KiB
C
140 lines
4.4 KiB
C
/* $NetBSD: joy_pci.c,v 1.3 2002/09/27 20:40:28 thorpej Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2000 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Martin Husemann <martin@netbsd.org>.
|
|
*
|
|
* 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: joy_pci.c,v 1.3 2002/09/27 20:40:28 thorpej Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/device.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
#include <dev/pci/pcireg.h>
|
|
#include <dev/pci/pcivar.h>
|
|
#include <dev/pci/pcidevs.h>
|
|
|
|
#include <dev/ic/joyvar.h>
|
|
|
|
int joy_pci_match __P((struct device *, struct cfdata *, void *));
|
|
void joy_pci_attach __P((struct device *, struct device *, void *));
|
|
static int bar_is_io __P((pci_chipset_tag_t pc, pcitag_t tag, int reg));
|
|
|
|
const struct cfattach joy_pci_ca = {
|
|
sizeof(struct joy_softc), joy_pci_match, joy_pci_attach
|
|
};
|
|
|
|
int
|
|
joy_pci_match(parent, match, aux)
|
|
struct device *parent;
|
|
struct cfdata *match;
|
|
void *aux;
|
|
{
|
|
struct pci_attach_args *pa = aux;
|
|
|
|
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_INPUT &&
|
|
PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_INPUT_GAMEPORT &&
|
|
PCI_INTERFACE(pa->pa_class) == 0x10)
|
|
return (1);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* check if this BAR assigns/requests IO space */
|
|
static int
|
|
bar_is_io(pc, tag, reg)
|
|
pci_chipset_tag_t pc;
|
|
pcitag_t tag;
|
|
int reg;
|
|
{
|
|
pcireg_t address, mask;
|
|
int s;
|
|
|
|
/*
|
|
* The splhigh() is not realy necessary at autoconfig time,
|
|
* but maybe useful if used in lkm context later.
|
|
*/
|
|
s = splhigh();
|
|
address = pci_conf_read(pc, tag, reg);
|
|
pci_conf_write(pc, tag, reg, 0xffffffff);
|
|
mask = pci_conf_read(pc, tag, reg);
|
|
pci_conf_write(pc, tag, reg, address);
|
|
splx(s);
|
|
|
|
return (PCI_MAPREG_TYPE(address) == PCI_MAPREG_TYPE_IO && PCI_MAPREG_IO_SIZE(mask) > 0);
|
|
}
|
|
|
|
void
|
|
joy_pci_attach(parent, self, aux)
|
|
struct device *parent, *self;
|
|
void *aux;
|
|
{
|
|
struct joy_softc *sc = (struct joy_softc *)self;
|
|
struct pci_attach_args *pa = aux;
|
|
char devinfo[256];
|
|
bus_size_t mapsize;
|
|
int reg;
|
|
|
|
pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
|
|
printf(": %s (rev 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class));
|
|
|
|
for (reg = PCI_MAPREG_START; reg < PCI_MAPREG_END; reg++)
|
|
if (bar_is_io(pa->pa_pc, pa->pa_tag, reg))
|
|
break;
|
|
if (reg >= PCI_MAPREG_END) {
|
|
printf("%s: violates PCI spec, no IO region found\n", sc->sc_dev.dv_xname);
|
|
return;
|
|
}
|
|
|
|
if (pci_mapreg_map(pa, reg, PCI_MAPREG_TYPE_IO, 0,
|
|
&sc->sc_iot, &sc->sc_ioh, NULL, &mapsize)) {
|
|
printf("%s: could not map IO space\n", sc->sc_dev.dv_xname);
|
|
return;
|
|
}
|
|
|
|
if (mapsize != 2) {
|
|
if (!bus_space_subregion(sc->sc_iot, sc->sc_ioh, 1, 1, &sc->sc_ioh) < 0) {
|
|
printf("%s: error mapping subregion\n", sc->sc_dev.dv_xname);
|
|
return;
|
|
}
|
|
}
|
|
|
|
joyattach(sc);
|
|
}
|