isavar.h revision 1.35
1 /* $NetBSD: isavar.h,v 1.35 1998/11/30 12:57:10 leo Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 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. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1995 Chris G. Demetriou 42 * Copyright (c) 1992 Berkeley Software Design, Inc. 43 * All rights reserved. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions and the following disclaimer. 50 * 2. Redistributions in binary form must reproduce the above copyright 51 * notice, this list of conditions and the following disclaimer in the 52 * documentation and/or other materials provided with the distribution. 53 * 3. All advertising materials mentioning features or use of this software 54 * must display the following acknowledgement: 55 * This product includes software developed by Berkeley Software 56 * Design, Inc. 57 * 4. The name of Berkeley Software Design must not be used to endorse 58 * or promote products derived from this software without specific 59 * prior written permission. 60 * 61 * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``AS IS'' AND 62 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 63 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 64 * ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN, INC. BE LIABLE 65 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 66 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 67 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 68 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 69 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 70 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 71 * SUCH DAMAGE. 72 * 73 * BSDI Id: isavar.h,v 1.5 1992/12/01 18:06:00 karels Exp 74 */ 75 76 #ifndef _DEV_ISA_ISAVAR_H_ 77 #define _DEV_ISA_ISAVAR_H_ 78 79 /* 80 * Definitions for ISA autoconfiguration. 81 */ 82 83 #include <sys/queue.h> 84 #include <machine/bus.h> 85 86 /* 87 * Structures and definitions needed by the machine-dependent header. 88 */ 89 struct isabus_attach_args; 90 91 #if (alpha + arc + arm32 + atari + bebox + i386 != 1) 92 ERROR: COMPILING FOR UNSUPPORTED MACHINE, OR MORE THAN ONE. 93 #endif 94 #if alpha 95 #include <alpha/isa/isa_machdep.h> 96 #endif 97 #if arc 98 #include <arc/isa/isa_machdep.h> 99 #endif 100 #if arm32 101 #include <arm32/isa/isa_machdep.h> 102 #endif 103 #if atari 104 #include <atari/isa/isa_machdep.h> 105 #endif 106 #if bebox 107 #include <bebox/isa/isa_machdep.h> 108 #endif 109 #if i386 110 #include <i386/isa/isa_machdep.h> 111 #endif 112 113 /* 114 * ISA bus attach arguments 115 */ 116 struct isabus_attach_args { 117 char *iba_busname; /* XXX should be common */ 118 bus_space_tag_t iba_iot; /* isa i/o space tag */ 119 bus_space_tag_t iba_memt; /* isa mem space tag */ 120 bus_dma_tag_t iba_dmat; /* isa DMA tag */ 121 isa_chipset_tag_t iba_ic; 122 }; 123 124 /* 125 * ISA driver attach arguments 126 */ 127 struct isa_attach_args { 128 bus_space_tag_t ia_iot; /* isa i/o space tag */ 129 bus_space_tag_t ia_memt; /* isa mem space tag */ 130 bus_dma_tag_t ia_dmat; /* DMA tag */ 131 132 isa_chipset_tag_t ia_ic; 133 134 int ia_iobase; /* base i/o address */ 135 int ia_iosize; /* span of ports used */ 136 int ia_irq; /* interrupt request */ 137 int ia_drq; /* DMA request */ 138 int ia_drq2; /* second DMA request */ 139 int ia_maddr; /* physical i/o mem addr */ 140 u_int ia_msize; /* size of i/o memory */ 141 void *ia_aux; /* driver specific */ 142 }; 143 144 #include "locators.h" 145 146 #define IOBASEUNK ISACF_PORT_DEFAULT /* i/o address is unknown */ 147 #define IRQUNK ISACF_IRQ_DEFAULT /* interrupt request line is unknown */ 148 #define DRQUNK ISACF_DRQ_DEFAULT /* DMA request line is unknown */ 149 #define MADDRUNK ISACF_IOMEM_DEFAULT /* shared memory address is unknown */ 150 151 /* 152 * Per-device ISA variables 153 */ 154 struct isadev { 155 struct device *id_dev; /* back pointer to generic */ 156 TAILQ_ENTRY(isadev) 157 id_bchain; /* bus chain */ 158 }; 159 160 /* 161 * ISA master bus 162 */ 163 struct isa_softc { 164 struct device sc_dev; /* base device */ 165 TAILQ_HEAD(, isadev) 166 sc_subdevs; /* list of all children */ 167 168 bus_space_tag_t sc_iot; /* isa io space tag */ 169 bus_space_tag_t sc_memt; /* isa mem space tag */ 170 bus_dma_tag_t sc_dmat; /* isa DMA tag */ 171 172 isa_chipset_tag_t sc_ic; 173 }; 174 175 #define cf_iobase cf_loc[ISACF_PORT] 176 #define cf_iosize cf_loc[ISACF_SIZE] 177 #define cf_maddr cf_loc[ISACF_IOMEM] 178 #define cf_msize cf_loc[ISACF_IOSIZ] 179 #define cf_irq cf_loc[ISACF_IRQ] 180 #define cf_drq cf_loc[ISACF_DRQ] 181 #define cf_drq2 cf_loc[ISACF_DRQ2] 182 183 /* 184 * ISA interrupt handler manipulation. 185 * 186 * To establish an ISA interrupt handler, a driver calls isa_intr_establish() 187 * with the interrupt number, type, level, function, and function argument of 188 * the interrupt it wants to handle. Isa_intr_establish() returns an opaque 189 * handle to an event descriptor if it succeeds, and returns NULL on failure. 190 * (XXX: some drivers can't handle this, since the former behaviour was to 191 * invoke panic() on failure). When the system does not accept any of the 192 * interrupt types supported by the driver, the driver should fail the attach. 193 * Interrupt handlers should return 0 for "interrupt not for me", 1 for 194 * "I took care of it", or -1 for "I guess it was mine, but I wasn't 195 * expecting it." 196 * 197 * To remove an interrupt handler, the driver calls isa_intr_disestablish() 198 * with the handle returned by isa_intr_establish() for that handler. 199 */ 200 201 /* ISA interrupt sharing types */ 202 char *isa_intr_typename __P((int type)); 203 204 #ifdef NEWCONFIG 205 /* 206 * Establish a device as being on the ISA bus (XXX NOT IMPLEMENTED). 207 */ 208 void isa_establish __P((struct isadev *, struct device *)); 209 #endif 210 211 /* 212 * Some ISA devices (e.g. on a VLB) can perform 32-bit DMA. This 213 * flag is passed to bus_dmamap_create() to indicate that fact. 214 */ 215 #define ISABUS_DMA_32BIT BUS_DMA_BUS1 216 217 #endif /* _DEV_ISA_ISAVAR_H_ */ 218
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