1 /* $NetBSD: joy_isa.c,v 1.12 2008/03/26 18:27:07 xtraeme 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 1.12 2008/03/26 18:27:07 xtraeme 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 static int joy_isa_probe(device_t, cfdata_t, void *); 52 static void joy_isa_attach(device_t, device_t, void *); 53 54 CFATTACH_DECL_NEW(joy_isa, sizeof(struct joy_softc), 55 joy_isa_probe, joy_isa_attach, NULL, NULL); 56 57 static int 58 joy_isa_probe(device_t parent, cfdata_t match, void *aux) 59 { 60 struct isa_attach_args *ia = aux; 61 bus_space_tag_t iot = ia->ia_iot; 62 bus_space_handle_t ioh; 63 int rval = 0; 64 65 if (ia->ia_nio < 1) 66 return 0; 67 68 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 69 return 0; 70 71 if (bus_space_map(iot, ia->ia_io[0].ir_addr, JOY_NPORTS, 0, &ioh)) 72 return 0; 73 74 #ifdef WANT_JOYSTICK_CONNECTED 75 bus_space_write_1(iot, ioh, 0, 0xff); 76 DELAY(10000); /* 10 ms delay */ 77 if ((bus_space_read_1(iot, ioh, 0) & 0x0f) != 0x0f) 78 rval = 1; 79 #else 80 rval = 1; 81 #endif 82 83 bus_space_unmap(iot, ioh, JOY_NPORTS); 84 85 if (rval) { 86 ia->ia_nio = 1; 87 ia->ia_io[0].ir_size = JOY_NPORTS; 88 89 ia->ia_niomem = 0; 90 ia->ia_nirq = 0; 91 ia->ia_ndrq = 0; 92 } 93 return rval; 94 } 95 96 static void 97 joy_isa_attach(device_t parent, device_t self, void *aux) 98 { 99 struct joy_softc *sc = device_private(self); 100 struct isa_attach_args *ia = aux; 101 102 aprint_normal("\n"); 103 104 sc->sc_iot = ia->ia_iot; 105 sc->sc_dev = self; 106 107 if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, JOY_NPORTS, 0, 108 &sc->sc_ioh)) { 109 aprint_error_dev(self, "can't map i/o space\n"); 110 return; 111 } 112 113 joyattach(sc); 114 } 115