1 /* $NetBSD: joy_isa.c,v 1.11 2007/10/19 12:00:20 ad Exp $ */ 2 3 /*- 4 * Copyright (c) 1995 Jean-Marc Zucconi 5 * All rights reserved. 6 * 7 * Ported to NetBSD by Matthieu Herrb <matthieu@laas.fr>. Additional 8 * modification by Jason R. Thorpe <thorpej@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 * in this position and unchanged. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: joy_isa.c,v 1.11 2007/10/19 12:00:20 ad Exp $"); 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 #include <sys/device.h> 42 43 #include <sys/bus.h> 44 45 #include <dev/isa/isavar.h> 46 47 #include <dev/ic/joyvar.h> 48 49 #define JOY_NPORTS 1 50 51 int joy_isa_probe(struct device *, struct cfdata *, void *); 52 void joy_isa_attach(struct device *, struct device *, void *); 53 54 CFATTACH_DECL(joy_isa, sizeof(struct joy_softc), 55 joy_isa_probe, joy_isa_attach, NULL, NULL); 56 57 int 58 joy_isa_probe(struct device *parent, struct cfdata *match, 59 void *aux) 60 { 61 struct isa_attach_args *ia = aux; 62 bus_space_tag_t iot = ia->ia_iot; 63 bus_space_handle_t ioh; 64 int rval = 0; 65 66 if (ia->ia_nio < 1) 67 return (0); 68 69 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 70 return (0); 71 72 if (bus_space_map(iot, ia->ia_io[0].ir_addr, JOY_NPORTS, 0, &ioh)) 73 return (0); 74 75 #ifdef WANT_JOYSTICK_CONNECTED 76 bus_space_write_1(iot, ioh, 0, 0xff); 77 DELAY(10000); /* 10 ms delay */ 78 if ((bus_space_read_1(iot, ioh, 0) & 0x0f) != 0x0f) 79 rval = 1; 80 #else 81 rval = 1; 82 #endif 83 84 bus_space_unmap(iot, ioh, JOY_NPORTS); 85 86 if (rval) { 87 ia->ia_nio = 1; 88 ia->ia_io[0].ir_size = JOY_NPORTS; 89 90 ia->ia_niomem = 0; 91 ia->ia_nirq = 0; 92 ia->ia_ndrq = 0; 93 } 94 return (rval); 95 } 96 97 void 98 joy_isa_attach(struct device *parent, struct device *self, void *aux) 99 { 100 struct joy_softc *sc = (struct joy_softc *) self; 101 struct isa_attach_args *ia = aux; 102 103 printf("\n"); 104 105 sc->sc_iot = ia->ia_iot; 106 107 if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, JOY_NPORTS, 0, 108 &sc->sc_ioh)) { 109 printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname); 110 return; 111 } 112 113 joyattach(sc); 114 } 115