138 lines
4.5 KiB
C
138 lines
4.5 KiB
C
/* $NetBSD: joy_pci.c,v 1.12 2005/12/11 12:22:50 christos Exp $ */
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/*-
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Martin Husemann <martin@NetBSD.org>.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: joy_pci.c,v 1.12 2005/12/11 12:22:50 christos Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <machine/bus.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcidevs.h>
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#include <dev/ic/joyvar.h>
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static int bar_is_io(pci_chipset_tag_t pc, pcitag_t tag, int reg);
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static int
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joy_pci_match(struct device *parent, struct cfdata *match, void *aux)
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{
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struct pci_attach_args *pa = aux;
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if (PCI_CLASS(pa->pa_class) == PCI_CLASS_INPUT &&
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PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_INPUT_GAMEPORT &&
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PCI_INTERFACE(pa->pa_class) == 0x10)
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return (1);
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if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CREATIVELABS &&
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(PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CREATIVELABS_SBJOY ||
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PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CREATIVELABS_SBJOY2))
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{
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return (1);
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}
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return (0);
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}
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/* check if this BAR assigns/requests IO space */
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static int
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bar_is_io(pci_chipset_tag_t pc, pcitag_t tag, int reg)
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{
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pcireg_t address, mask;
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int s;
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/*
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* The splhigh() is not realy necessary at autoconfig time,
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* but maybe useful if used in lkm context later.
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*/
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s = splhigh();
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address = pci_conf_read(pc, tag, reg);
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pci_conf_write(pc, tag, reg, 0xffffffff);
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mask = pci_conf_read(pc, tag, reg);
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pci_conf_write(pc, tag, reg, address);
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splx(s);
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return (PCI_MAPREG_TYPE(address) == PCI_MAPREG_TYPE_IO && PCI_MAPREG_IO_SIZE(mask) > 0);
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}
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static void
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joy_pci_attach(struct device *parent, struct device *self, void *aux)
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{
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struct joy_softc *sc = (struct joy_softc *)self;
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struct pci_attach_args *pa = aux;
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char devinfo[256];
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bus_size_t mapsize;
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int reg;
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pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
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printf(": %s (rev 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class));
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for (reg = PCI_MAPREG_START; reg < PCI_MAPREG_END;
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reg += sizeof(pcireg_t))
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if (bar_is_io(pa->pa_pc, pa->pa_tag, reg))
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break;
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if (reg >= PCI_MAPREG_END) {
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printf("%s: violates PCI spec, no IO region found\n",
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sc->sc_dev.dv_xname);
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return;
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}
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if (pci_mapreg_map(pa, reg, PCI_MAPREG_TYPE_IO, 0,
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&sc->sc_iot, &sc->sc_ioh, NULL, &mapsize)) {
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printf("%s: could not map IO space\n", sc->sc_dev.dv_xname);
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return;
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}
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if (mapsize != 2) {
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if (!bus_space_subregion(sc->sc_iot, sc->sc_ioh, 1, 1, &sc->sc_ioh) < 0) {
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printf("%s: error mapping subregion\n", sc->sc_dev.dv_xname);
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return;
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}
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}
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joyattach(sc);
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}
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CFATTACH_DECL(joy_pci, sizeof(struct joy_softc),
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joy_pci_match, joy_pci_attach, NULL, NULL);
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