isapnp_machdep.c revision 1.1.2.2
1 1.1.2.2 eeh /* $NetBSD: isapnp_machdep.c,v 1.1.2.2 1998/08/08 03:06:35 eeh Exp $ */ 2 1.1.2.2 eeh 3 1.1.2.2 eeh /*- 4 1.1.2.2 eeh * Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc. 5 1.1.2.2 eeh * All rights reserved. 6 1.1.2.2 eeh * 7 1.1.2.2 eeh * This code is derived from software contributed to The NetBSD Foundation 8 1.1.2.2 eeh * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 1.1.2.2 eeh * NASA Ames Research Center. 10 1.1.2.2 eeh * 11 1.1.2.2 eeh * Redistribution and use in source and binary forms, with or without 12 1.1.2.2 eeh * modification, are permitted provided that the following conditions 13 1.1.2.2 eeh * are met: 14 1.1.2.2 eeh * 1. Redistributions of source code must retain the above copyright 15 1.1.2.2 eeh * notice, this list of conditions and the following disclaimer. 16 1.1.2.2 eeh * 2. Redistributions in binary form must reproduce the above copyright 17 1.1.2.2 eeh * notice, this list of conditions and the following disclaimer in the 18 1.1.2.2 eeh * documentation and/or other materials provided with the distribution. 19 1.1.2.2 eeh * 3. All advertising materials mentioning features or use of this software 20 1.1.2.2 eeh * must display the following acknowledgement: 21 1.1.2.2 eeh * This product includes software developed by the NetBSD 22 1.1.2.2 eeh * Foundation, Inc. and its contributors. 23 1.1.2.2 eeh * 4. Neither the name of The NetBSD Foundation nor the names of its 24 1.1.2.2 eeh * contributors may be used to endorse or promote products derived 25 1.1.2.2 eeh * from this software without specific prior written permission. 26 1.1.2.2 eeh * 27 1.1.2.2 eeh * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 1.1.2.2 eeh * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 1.1.2.2 eeh * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 1.1.2.2 eeh * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 1.1.2.2 eeh * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 1.1.2.2 eeh * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 1.1.2.2 eeh * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 1.1.2.2 eeh * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 1.1.2.2 eeh * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 1.1.2.2 eeh * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 1.1.2.2 eeh * POSSIBILITY OF SUCH DAMAGE. 38 1.1.2.2 eeh */ 39 1.1.2.2 eeh 40 1.1.2.2 eeh /* 41 1.1.2.2 eeh * Copyright (c) 1996 Christos Zoulas. All rights reserved. 42 1.1.2.2 eeh * 43 1.1.2.2 eeh * Redistribution and use in source and binary forms, with or without 44 1.1.2.2 eeh * modification, are permitted provided that the following conditions 45 1.1.2.2 eeh * are met: 46 1.1.2.2 eeh * 1. Redistributions of source code must retain the above copyright 47 1.1.2.2 eeh * notice, this list of conditions and the following disclaimer. 48 1.1.2.2 eeh * 2. Redistributions in binary form must reproduce the above copyright 49 1.1.2.2 eeh * notice, this list of conditions and the following disclaimer in the 50 1.1.2.2 eeh * documentation and/or other materials provided with the distribution. 51 1.1.2.2 eeh * 3. All advertising materials mentioning features or use of this software 52 1.1.2.2 eeh * must display the following acknowledgement: 53 1.1.2.2 eeh * This product includes software developed by Christos Zoulas. 54 1.1.2.2 eeh * 4. The name of the author may not be used to endorse or promote products 55 1.1.2.2 eeh * derived from this software without specific prior written permission. 56 1.1.2.2 eeh * 57 1.1.2.2 eeh * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 58 1.1.2.2 eeh * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 1.1.2.2 eeh * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 1.1.2.2 eeh * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 61 1.1.2.2 eeh * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 62 1.1.2.2 eeh * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 63 1.1.2.2 eeh * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 64 1.1.2.2 eeh * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 65 1.1.2.2 eeh * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 66 1.1.2.2 eeh * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 1.1.2.2 eeh */ 68 1.1.2.2 eeh 69 1.1.2.2 eeh /* 70 1.1.2.2 eeh * Machine-dependent portions of ISA PnP bus autoconfiguration. 71 1.1.2.2 eeh * 72 1.1.2.2 eeh * N.B. This file exists mostly to get around some lameness surrounding 73 1.1.2.2 eeh * the PnP spec. ISA PnP registers live where some `normal' ISA 74 1.1.2.2 eeh * devices do, but are e.g. write-only registers where the normal 75 1.1.2.2 eeh * device has a read-only register. This breaks in the presence of 76 1.1.2.2 eeh * i/o port accounting. This file takes care of mapping ISA PnP 77 1.1.2.2 eeh * registers without actually allocating them in extent maps. 78 1.1.2.2 eeh * 79 1.1.2.2 eeh * Since this is a machine-dependent file, we make all sorts of 80 1.1.2.2 eeh * assumptions about bus.h's guts. Beware! 81 1.1.2.2 eeh */ 82 1.1.2.2 eeh 83 1.1.2.2 eeh #include <sys/param.h> 84 1.1.2.2 eeh #include <sys/systm.h> 85 1.1.2.2 eeh #include <sys/device.h> 86 1.1.2.2 eeh #include <sys/malloc.h> 87 1.1.2.2 eeh 88 1.1.2.2 eeh #include <machine/bus.h> 89 1.1.2.2 eeh 90 1.1.2.2 eeh #include <dev/isa/isavar.h> 91 1.1.2.2 eeh 92 1.1.2.2 eeh #include <dev/isapnp/isapnpreg.h> 93 1.1.2.2 eeh #include <dev/isapnp/isapnpvar.h> 94 1.1.2.2 eeh 95 1.1.2.2 eeh /* isapnp_map(): 96 1.1.2.2 eeh * Map I/O regions used by PnP 97 1.1.2.2 eeh */ 98 1.1.2.2 eeh int 99 1.1.2.2 eeh isapnp_map(sc) 100 1.1.2.2 eeh struct isapnp_softc *sc; 101 1.1.2.2 eeh { 102 1.1.2.2 eeh int error; 103 1.1.2.2 eeh 104 1.1.2.2 eeh error = alpha_bus_space_map_noacct(sc->sc_iot, ISAPNP_ADDR, 1, 0, 105 1.1.2.2 eeh &sc->sc_addr_ioh); 106 1.1.2.2 eeh if (error) 107 1.1.2.2 eeh return (error); 108 1.1.2.2 eeh 109 1.1.2.2 eeh error = alpha_bus_space_map_noacct(sc->sc_iot, ISAPNP_WRDATA, 1, 0, 110 1.1.2.2 eeh &sc->sc_wrdata_ioh); 111 1.1.2.2 eeh if (error) { 112 1.1.2.2 eeh alpha_bus_space_unmap_noacct(sc->sc_iot, sc->sc_addr_ioh, 1); 113 1.1.2.2 eeh return (error); 114 1.1.2.2 eeh } 115 1.1.2.2 eeh 116 1.1.2.2 eeh return (0); 117 1.1.2.2 eeh } 118 1.1.2.2 eeh 119 1.1.2.2 eeh /* isapnp_unmap(): 120 1.1.2.2 eeh * Unmap I/O regions used by PnP 121 1.1.2.2 eeh */ 122 1.1.2.2 eeh void 123 1.1.2.2 eeh isapnp_unmap(sc) 124 1.1.2.2 eeh struct isapnp_softc *sc; 125 1.1.2.2 eeh { 126 1.1.2.2 eeh 127 1.1.2.2 eeh alpha_bus_space_unmap_noacct(sc->sc_iot, sc->sc_addr_ioh, 1); 128 1.1.2.2 eeh alpha_bus_space_unmap_noacct(sc->sc_iot, sc->sc_wrdata_ioh, 1); 129 1.1.2.2 eeh } 130 1.1.2.2 eeh 131 1.1.2.2 eeh /* isapnp_map_readport(): 132 1.1.2.2 eeh * Called to map the PnP `read port', which is mapped independently 133 1.1.2.2 eeh * of the `write' and `addr' ports. 134 1.1.2.2 eeh * 135 1.1.2.2 eeh * NOTE: assumes the caller has filled in sc->sc_read_port! 136 1.1.2.2 eeh */ 137 1.1.2.2 eeh int 138 1.1.2.2 eeh isapnp_map_readport(sc) 139 1.1.2.2 eeh struct isapnp_softc *sc; 140 1.1.2.2 eeh { 141 1.1.2.2 eeh #ifdef _KERNEL 142 1.1.2.2 eeh int error; 143 1.1.2.2 eeh #endif 144 1.1.2.2 eeh 145 1.1.2.2 eeh #ifdef _KERNEL 146 1.1.2.2 eeh /* Check if some other device has already claimed this port. */ 147 1.1.2.2 eeh if ((error = bus_space_map(sc->sc_iot, sc->sc_read_port, 1, 0, 148 1.1.2.2 eeh &sc->sc_read_ioh)) != 0) 149 1.1.2.2 eeh return error; 150 1.1.2.2 eeh 151 1.1.2.2 eeh /* 152 1.1.2.2 eeh * XXX: We unmap the port because it can and will be used by other 153 1.1.2.2 eeh * devices such as a joystick. We need a better port accounting 154 1.1.2.2 eeh * scheme with read and write ports. 155 1.1.2.2 eeh */ 156 1.1.2.2 eeh bus_space_unmap(sc->sc_iot, sc->sc_read_ioh, 1); 157 1.1.2.2 eeh #endif 158 1.1.2.2 eeh return 0; 159 1.1.2.2 eeh } 160 1.1.2.2 eeh 161 1.1.2.2 eeh /* isapnp_unmap_readport(): 162 1.1.2.2 eeh * Pretend to unmap a previously mapped `read port'. 163 1.1.2.2 eeh */ 164 1.1.2.2 eeh void 165 1.1.2.2 eeh isapnp_unmap_readport(sc) 166 1.1.2.2 eeh struct isapnp_softc *sc; 167 1.1.2.2 eeh { 168 1.1.2.2 eeh 169 1.1.2.2 eeh /* Do nothing */ 170 1.1.2.2 eeh } 171
Indexes created Sat Oct 25 16:10:12 GMT 2025