1 /* $NetBSD: joy_pci.c,v 1.12 2005/12/11 12:22:50 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Martin Husemann <martin@NetBSD.org>. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: joy_pci.c,v 1.12 2005/12/11 12:22:50 christos Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/device.h> 46 47 #include <machine/bus.h> 48 49 #include <dev/pci/pcireg.h> 50 #include <dev/pci/pcivar.h> 51 #include <dev/pci/pcidevs.h> 52 53 #include <dev/ic/joyvar.h> 54 55 static int bar_is_io(pci_chipset_tag_t pc, pcitag_t tag, int reg); 56 57 static int 58 joy_pci_match(struct device *parent, struct cfdata *match, void *aux) 59 { 60 struct pci_attach_args *pa = aux; 61 62 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_INPUT && 63 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_INPUT_GAMEPORT && 64 PCI_INTERFACE(pa->pa_class) == 0x10) 65 return (1); 66 67 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CREATIVELABS && 68 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CREATIVELABS_SBJOY || 69 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CREATIVELABS_SBJOY2)) 70 { 71 return (1); 72 } 73 74 return (0); 75 } 76 77 /* check if this BAR assigns/requests IO space */ 78 static int 79 bar_is_io(pci_chipset_tag_t pc, pcitag_t tag, int reg) 80 { 81 pcireg_t address, mask; 82 int s; 83 84 /* 85 * The splhigh() is not realy necessary at autoconfig time, 86 * but maybe useful if used in lkm context later. 87 */ 88 s = splhigh(); 89 address = pci_conf_read(pc, tag, reg); 90 pci_conf_write(pc, tag, reg, 0xffffffff); 91 mask = pci_conf_read(pc, tag, reg); 92 pci_conf_write(pc, tag, reg, address); 93 splx(s); 94 95 return (PCI_MAPREG_TYPE(address) == PCI_MAPREG_TYPE_IO && PCI_MAPREG_IO_SIZE(mask) > 0); 96 } 97 98 static void 99 joy_pci_attach(struct device *parent, struct device *self, void *aux) 100 { 101 struct joy_softc *sc = (struct joy_softc *)self; 102 struct pci_attach_args *pa = aux; 103 char devinfo[256]; 104 bus_size_t mapsize; 105 int reg; 106 107 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); 108 printf(": %s (rev 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class)); 109 110 for (reg = PCI_MAPREG_START; reg < PCI_MAPREG_END; 111 reg += sizeof(pcireg_t)) 112 if (bar_is_io(pa->pa_pc, pa->pa_tag, reg)) 113 break; 114 if (reg >= PCI_MAPREG_END) { 115 printf("%s: violates PCI spec, no IO region found\n", 116 sc->sc_dev.dv_xname); 117 return; 118 } 119 120 if (pci_mapreg_map(pa, reg, PCI_MAPREG_TYPE_IO, 0, 121 &sc->sc_iot, &sc->sc_ioh, NULL, &mapsize)) { 122 printf("%s: could not map IO space\n", sc->sc_dev.dv_xname); 123 return; 124 } 125 126 if (mapsize != 2) { 127 if (!bus_space_subregion(sc->sc_iot, sc->sc_ioh, 1, 1, &sc->sc_ioh) < 0) { 128 printf("%s: error mapping subregion\n", sc->sc_dev.dv_xname); 129 return; 130 } 131 } 132 133 joyattach(sc); 134 } 135 136 CFATTACH_DECL(joy_pci, sizeof(struct joy_softc), 137 joy_pci_match, joy_pci_attach, NULL, NULL); 138