1 /* $NetBSD: isavar.h,v 1.53 2009/05/12 09:10:15 cegger Exp $ */ 2 3 /*- 4 * Copyright (c) 1997, 2001 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 Wasabi Systems, Inc. 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 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1995 Chris G. Demetriou 34 * Copyright (c) 1992 Berkeley Software Design, Inc. 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by Berkeley Software 48 * Design, Inc. 49 * 4. The name of Berkeley Software Design must not be used to endorse 50 * or promote products derived from this software without specific 51 * prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN, INC. BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * BSDI Id: isavar.h,v 1.5 1992/12/01 18:06:00 karels Exp 66 */ 67 68 #ifndef _DEV_ISA_ISAVAR_H_ 69 #define _DEV_ISA_ISAVAR_H_ 70 71 /* 72 * Definitions for ISA autoconfiguration. 73 */ 74 75 #include <sys/queue.h> 76 #include <sys/bus.h> 77 78 /* 79 * Structures and definitions needed by the machine-dependent header. 80 */ 81 struct isabus_attach_args; 82 83 #include <machine/isa_machdep.h> 84 85 /* 86 * ISA bus attach arguments 87 */ 88 struct isabus_attach_args { 89 const char *_iba_busname; /* XXX placeholder */ 90 bus_space_tag_t iba_iot; /* isa i/o space tag */ 91 bus_space_tag_t iba_memt; /* isa mem space tag */ 92 bus_dma_tag_t iba_dmat; /* isa DMA tag */ 93 isa_chipset_tag_t iba_ic; 94 }; 95 96 /* 97 * ISA bus resources. 98 */ 99 100 struct isa_io { 101 int ir_addr; 102 int ir_size; 103 }; 104 105 struct isa_iomem { 106 int ir_addr; 107 int ir_size; 108 }; 109 110 struct isa_irq { 111 int ir_irq; 112 }; 113 114 struct isa_drq { 115 int ir_drq; 116 }; 117 118 struct isa_pnpname { 119 struct isa_pnpname *ipn_next; 120 char *ipn_name; 121 }; 122 123 /* 124 * Machine-dependent code provides a list of these to describe 125 * devices on the ISA bus which should be attached via direct 126 * configuration. 127 * 128 * All of this information is dynamically allocated, so that 129 * the ISA bus driver may free all of this information if the 130 * bus does not support dynamic attach/detach of devices (e.g. 131 * on a docking station). 132 * 133 * Some info on the "ik_key" field: This is a unique number for 134 * each knowndev node. If, when we need to re-enumerate the 135 * knowndevs, we discover that a node with key N is in the old 136 * list but not in the new, the device has disappeared. Similarly, 137 * if a node with key M is in the new list but not in the old, 138 * the device is new. Note that the knowndevs list must be 139 * sorted in ascending "key" order. 140 */ 141 struct isa_knowndev { 142 TAILQ_ENTRY(isa_knowndev) ik_list; 143 uintptr_t ik_key; 144 device_t ik_claimed; 145 146 /* 147 * The rest of these fields correspond to isa_attach_args 148 * fields. 149 */ 150 char *ik_pnpname; 151 struct isa_pnpname *ik_pnpcompatnames; 152 153 struct isa_io *ik_io; 154 int ik_nio; 155 156 struct isa_iomem *ik_iomem; 157 int ik_niomem; 158 159 struct isa_irq *ik_irq; 160 int ik_nirq; 161 162 struct isa_drq *ik_drq; 163 int ik_ndrq; 164 }; 165 166 /* 167 * ISA driver attach arguments 168 */ 169 struct isa_attach_args { 170 bus_space_tag_t ia_iot; /* isa i/o space tag */ 171 bus_space_tag_t ia_memt; /* isa mem space tag */ 172 bus_dma_tag_t ia_dmat; /* DMA tag */ 173 174 isa_chipset_tag_t ia_ic; 175 176 /* 177 * PNP (or other) names to with which we can match a device 178 * driver to a device that machine-dependent code tells us 179 * is there (i.e. support for direct-configuration of ISA 180 * devices). 181 */ 182 char *ia_pnpname; 183 struct isa_pnpname *ia_pnpcompatnames; 184 185 struct isa_io *ia_io; /* I/O resources */ 186 int ia_nio; 187 188 struct isa_iomem *ia_iomem; /* memory resources */ 189 int ia_niomem; 190 191 struct isa_irq *ia_irq; /* IRQ resources */ 192 int ia_nirq; 193 194 struct isa_drq *ia_drq; /* DRQ resources */ 195 int ia_ndrq; 196 197 void *ia_aux; /* driver specific */ 198 }; 199 200 /* 201 * Test to determine if a given call to an ISA device probe routine 202 * is actually an attempt to do direct configuration. 203 */ 204 #define ISA_DIRECT_CONFIG(ia) \ 205 ((ia)->ia_pnpname != NULL || (ia)->ia_pnpcompatnames != NULL) 206 207 /* 208 * ISA master bus 209 */ 210 struct isa_softc { 211 device_t sc_dev; /* base device */ 212 213 bus_space_tag_t sc_iot; /* isa io space tag */ 214 bus_space_tag_t sc_memt; /* isa mem space tag */ 215 bus_dma_tag_t sc_dmat; /* isa DMA tag */ 216 217 isa_chipset_tag_t sc_ic; 218 219 TAILQ_HEAD(, isa_knowndev) sc_knowndevs; 220 int sc_dynamicdevs; 221 }; 222 223 /* 224 * These must be in sync with the ISACF_XXX_DEFAULT definitions 225 * in "locators.h" (generated from files.isa). 226 * (not including "locators.h" here to avoid dependency) 227 */ 228 #define ISA_UNKNOWN_PORT (-1) 229 #define ISA_UNKNOWN_IOMEM (-1) 230 #define ISA_UNKNOWN_IOSIZ (0) 231 #define ISA_UNKNOWN_IRQ (-1) 232 #define ISA_UNKNOWN_DRQ (-1) 233 #define ISA_UNKNOWN_DRQ2 (-1) 234 235 int isabusprint(void *, const char *); 236 237 /* 238 * ISA interrupt handler manipulation. 239 * 240 * To establish an ISA interrupt handler, a driver calls isa_intr_establish() 241 * with the interrupt number, type, level, function, and function argument of 242 * the interrupt it wants to handle. Isa_intr_establish() returns an opaque 243 * handle to an event descriptor if it succeeds, and returns NULL on failure. 244 * (XXX: some drivers can't handle this, since the former behaviour was to 245 * invoke panic() on failure). When the system does not accept any of the 246 * interrupt types supported by the driver, the driver should fail the attach. 247 * Interrupt handlers should return 0 for "interrupt not for me", 1 for 248 * "I took care of it", or -1 for "I guess it was mine, but I wasn't 249 * expecting it." 250 * 251 * To remove an interrupt handler, the driver calls isa_intr_disestablish() 252 * with the handle returned by isa_intr_establish() for that handler. 253 * 254 * The event counter (struct evcnt) associated with an interrupt line 255 * (to be used as 'parent' for an ISA device's interrupt handler's evcnt) 256 * can be obtained with isa_intr_evcnt(). 257 */ 258 259 /* ISA interrupt sharing types */ 260 const char *isa_intr_typename(int); 261 262 /* 263 * Some ISA devices (e.g. on a VLB) can perform 32-bit DMA. This 264 * flag is passed to bus_dmamap_create() to indicate that fact. 265 */ 266 #define ISABUS_DMA_32BIT BUS_DMA_BUS1 267 268 /* 269 * This flag indicates that the DMA channel should not yet be reserved, 270 * even if BUS_DMA_ALLOCNOW is specified. 271 */ 272 #define ISABUS_DMA_DEFERCHAN BUS_DMA_BUS2 273 274 void isa_set_slotcount(int); 275 int isa_get_slotcount(void); 276 277 #endif /* _DEV_ISA_ISAVAR_H_ */ 278
Indexes created Sat Sep 20 22:09:52 GMT 2025