isapnp_machdep.c revision 1.2.4.2
1 1.2.4.2 yamt /* $NetBSD: isapnp_machdep.c,v 1.2.4.2 2007/10/27 11:27:50 yamt Exp $ */ 2 1.2.4.2 yamt 3 1.2.4.2 yamt /*- 4 1.2.4.2 yamt * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. 5 1.2.4.2 yamt * All rights reserved. 6 1.2.4.2 yamt * 7 1.2.4.2 yamt * This code is derived from software contributed to The NetBSD Foundation 8 1.2.4.2 yamt * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 1.2.4.2 yamt * NASA Ames Research Center and by Christos Zoulas. 10 1.2.4.2 yamt * 11 1.2.4.2 yamt * Redistribution and use in source and binary forms, with or without 12 1.2.4.2 yamt * modification, are permitted provided that the following conditions 13 1.2.4.2 yamt * are met: 14 1.2.4.2 yamt * 1. Redistributions of source code must retain the above copyright 15 1.2.4.2 yamt * notice, this list of conditions and the following disclaimer. 16 1.2.4.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 17 1.2.4.2 yamt * notice, this list of conditions and the following disclaimer in the 18 1.2.4.2 yamt * documentation and/or other materials provided with the distribution. 19 1.2.4.2 yamt * 3. All advertising materials mentioning features or use of this software 20 1.2.4.2 yamt * must display the following acknowledgement: 21 1.2.4.2 yamt * This product includes software developed by the NetBSD 22 1.2.4.2 yamt * Foundation, Inc. and its contributors. 23 1.2.4.2 yamt * 4. Neither the name of The NetBSD Foundation nor the names of its 24 1.2.4.2 yamt * contributors may be used to endorse or promote products derived 25 1.2.4.2 yamt * from this software without specific prior written permission. 26 1.2.4.2 yamt * 27 1.2.4.2 yamt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 1.2.4.2 yamt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 1.2.4.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 1.2.4.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 1.2.4.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 1.2.4.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 1.2.4.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 1.2.4.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 1.2.4.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 1.2.4.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 1.2.4.2 yamt * POSSIBILITY OF SUCH DAMAGE. 38 1.2.4.2 yamt */ 39 1.2.4.2 yamt 40 1.2.4.2 yamt /* 41 1.2.4.2 yamt * Copyright (c) 1997 Thomas Gerner. All rights reserved. 42 1.2.4.2 yamt * 43 1.2.4.2 yamt * Redistribution and use in source and binary forms, with or without 44 1.2.4.2 yamt * modification, are permitted provided that the following conditions 45 1.2.4.2 yamt * are met: 46 1.2.4.2 yamt * 1. Redistributions of source code must retain the above copyright 47 1.2.4.2 yamt * notice, this list of conditions and the following disclaimer. 48 1.2.4.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 49 1.2.4.2 yamt * notice, this list of conditions and the following disclaimer in the 50 1.2.4.2 yamt * documentation and/or other materials provided with the distribution. 51 1.2.4.2 yamt * 3. All advertising materials mentioning features or use of this software 52 1.2.4.2 yamt * must display the following acknowledgement: 53 1.2.4.2 yamt * This product includes software developed by Christos Zoulas. 54 1.2.4.2 yamt * 4. The name of the author may not be used to endorse or promote products 55 1.2.4.2 yamt * derived from this software without specific prior written permission. 56 1.2.4.2 yamt * 57 1.2.4.2 yamt * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 58 1.2.4.2 yamt * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 1.2.4.2 yamt * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 1.2.4.2 yamt * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 61 1.2.4.2 yamt * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 62 1.2.4.2 yamt * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 63 1.2.4.2 yamt * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 64 1.2.4.2 yamt * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 65 1.2.4.2 yamt * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 66 1.2.4.2 yamt * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 1.2.4.2 yamt */ 68 1.2.4.2 yamt 69 1.2.4.2 yamt /* 70 1.2.4.2 yamt * Machine-dependent portions of ISA PnP bus autoconfiguration. 71 1.2.4.2 yamt * 72 1.2.4.2 yamt * N.B. This file exists mostly to get around some lameness surrounding 73 1.2.4.2 yamt * the PnP spec. ISA PnP registers live where some `normal' ISA 74 1.2.4.2 yamt * devices do, but are e.g. write-only registers where the normal 75 1.2.4.2 yamt * device has a read-only register. This breaks in the presence of 76 1.2.4.2 yamt * i/o port accounting. This file takes care of mapping ISA PnP 77 1.2.4.2 yamt * registers without actually allocating them in extent maps. 78 1.2.4.2 yamt * 79 1.2.4.2 yamt * Since this is a machine-dependent file, we make all sorts of 80 1.2.4.2 yamt * assumptions about bus.h's guts. Beware! 81 1.2.4.2 yamt * 82 1.2.4.2 yamt * Note: We just use bus_space{,un}map() here. This works because we 83 1.2.4.2 yamt * don't do space accounting (we'd need a back-door to bypass it 84 1.2.4.2 yamt * if we did!). 85 1.2.4.2 yamt */ 86 1.2.4.2 yamt 87 1.2.4.2 yamt #include <sys/cdefs.h> 88 1.2.4.2 yamt __KERNEL_RCSID(0, "$NetBSD: isapnp_machdep.c,v 1.2.4.2 2007/10/27 11:27:50 yamt Exp $"); 89 1.2.4.2 yamt 90 1.2.4.2 yamt #include <sys/param.h> 91 1.2.4.2 yamt #include <sys/systm.h> 92 1.2.4.2 yamt #include <sys/device.h> 93 1.2.4.2 yamt #include <sys/malloc.h> 94 1.2.4.2 yamt 95 1.2.4.2 yamt #include <machine/bus.h> 96 1.2.4.2 yamt 97 1.2.4.2 yamt #include <dev/isa/isavar.h> 98 1.2.4.2 yamt 99 1.2.4.2 yamt #include <dev/isapnp/isapnpreg.h> 100 1.2.4.2 yamt #include <dev/isapnp/isapnpvar.h> 101 1.2.4.2 yamt 102 1.2.4.2 yamt /* isapnp_map(): 103 1.2.4.2 yamt * Map I/O regions used by PnP 104 1.2.4.2 yamt */ 105 1.2.4.2 yamt int 106 1.2.4.2 yamt isapnp_map(struct isapnp_softc *sc) 107 1.2.4.2 yamt { 108 1.2.4.2 yamt #ifdef _KERNEL 109 1.2.4.2 yamt int error; 110 1.2.4.2 yamt #endif 111 1.2.4.2 yamt 112 1.2.4.2 yamt #ifdef _KERNEL 113 1.2.4.2 yamt if ((error = bus_space_map(sc->sc_iot, ISAPNP_ADDR, 1, 0, 114 1.2.4.2 yamt &sc->sc_addr_ioh)) != 0) 115 1.2.4.2 yamt return error; 116 1.2.4.2 yamt if ((error = bus_space_map(sc->sc_iot, ISAPNP_WRDATA, 1, 0, 117 1.2.4.2 yamt &sc->sc_wrdata_ioh)) != 0) 118 1.2.4.2 yamt return error; 119 1.2.4.2 yamt #endif 120 1.2.4.2 yamt return (0); 121 1.2.4.2 yamt } 122 1.2.4.2 yamt 123 1.2.4.2 yamt /* isapnp_unmap(): 124 1.2.4.2 yamt * Unmap I/O regions used by PnP 125 1.2.4.2 yamt */ 126 1.2.4.2 yamt void 127 1.2.4.2 yamt isapnp_unmap(struct isapnp_softc *sc) 128 1.2.4.2 yamt { 129 1.2.4.2 yamt 130 1.2.4.2 yamt bus_space_unmap(sc->sc_iot, sc->sc_addr_ioh, 1); 131 1.2.4.2 yamt bus_space_unmap(sc->sc_iot, sc->sc_wrdata_ioh, 1); 132 1.2.4.2 yamt } 133 1.2.4.2 yamt 134 1.2.4.2 yamt /* isapnp_map_readport(): 135 1.2.4.2 yamt * Called to map the PnP `read port', which is mapped independently 136 1.2.4.2 yamt * of the `write' and `addr' ports. 137 1.2.4.2 yamt * 138 1.2.4.2 yamt * NOTE: assumes the caller has filled in sc->sc_read_port! 139 1.2.4.2 yamt */ 140 1.2.4.2 yamt int 141 1.2.4.2 yamt isapnp_map_readport(struct isapnp_softc *sc) 142 1.2.4.2 yamt { 143 1.2.4.2 yamt #ifdef _KERNEL 144 1.2.4.2 yamt int error; 145 1.2.4.2 yamt #endif 146 1.2.4.2 yamt 147 1.2.4.2 yamt #ifdef _KERNEL 148 1.2.4.2 yamt /* Check if some other device has already claimed this port. */ 149 1.2.4.2 yamt if ((error = bus_space_map(sc->sc_iot, sc->sc_read_port, 1, 0, 150 1.2.4.2 yamt &sc->sc_read_ioh)) != 0) 151 1.2.4.2 yamt return error; 152 1.2.4.2 yamt #endif 153 1.2.4.2 yamt return 0; 154 1.2.4.2 yamt } 155 1.2.4.2 yamt 156 1.2.4.2 yamt /* isapnp_unmap_readport(): 157 1.2.4.2 yamt * Pretend to unmap a previously mapped `read port'. 158 1.2.4.2 yamt */ 159 1.2.4.2 yamt void 160 1.2.4.2 yamt isapnp_unmap_readport(struct isapnp_softc *sc) 161 1.2.4.2 yamt { 162 1.2.4.2 yamt 163 1.2.4.2 yamt bus_space_unmap(sc->sc_iot, sc->sc_read_ioh, 1); 164 1.2.4.2 yamt } 165
Indexes created Sun Oct 19 02:09:48 GMT 2025