eisa.c revision 1.18
1 /* $NetBSD: eisa.c,v 1.18 1997/09/13 08:48:59 enami Exp $ */ 2 3 /* 4 * Copyright (c) 1995, 1996 Christopher G. Demetriou 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Christopher G. Demetriou 18 * for the NetBSD Project. 19 * 4. 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 * EISA Bus device 36 * 37 * Makes sure an EISA bus is present, and finds and attaches devices 38 * living on it. 39 */ 40 41 #include "opt_eisaverbose.h" 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/device.h> 46 47 #include <machine/bus.h> 48 49 #include <dev/eisa/eisareg.h> 50 #include <dev/eisa/eisavar.h> 51 #include <dev/eisa/eisadevs.h> 52 53 #ifdef __BROKEN_INDIRECT_CONFIG 54 int eisamatch __P((struct device *, void *, void *)); 55 #else 56 int eisamatch __P((struct device *, struct cfdata *, void *)); 57 #endif 58 void eisaattach __P((struct device *, struct device *, void *)); 59 60 struct cfattach eisa_ca = { 61 sizeof(struct device), eisamatch, eisaattach 62 }; 63 64 struct cfdriver eisa_cd = { 65 NULL, "eisa", DV_DULL 66 }; 67 68 #ifdef __BROKEN_INDIRECT_CONFIG 69 int eisasubmatch __P((struct device *, void *, void *)); 70 #else 71 int eisasubmatch __P((struct device *, struct cfdata *, void *)); 72 #endif 73 int eisaprint __P((void *, const char *)); 74 void eisa_devinfo __P((const char *, char *)); 75 76 int 77 #ifdef __BROKEN_INDIRECT_CONFIG 78 eisamatch(parent, match, aux) 79 #else 80 eisamatch(parent, cf, aux) 81 #endif 82 struct device *parent; 83 #ifdef __BROKEN_INDIRECT_CONFIG 84 void *match; 85 #else 86 struct cfdata *cf; 87 #endif 88 void *aux; 89 { 90 #ifdef __BROKEN_INDIRECT_CONFIG 91 struct cfdata *cf = match; 92 #endif 93 struct eisabus_attach_args *eba = aux; 94 95 if (strcmp(eba->eba_busname, cf->cf_driver->cd_name)) 96 return (0); 97 98 /* XXX check other indicators */ 99 100 return (1); 101 } 102 103 int 104 eisaprint(aux, pnp) 105 void *aux; 106 const char *pnp; 107 { 108 register struct eisa_attach_args *ea = aux; 109 char devinfo[256]; 110 111 if (pnp) { 112 eisa_devinfo(ea->ea_idstring, devinfo); 113 printf("%s at %s", devinfo, pnp); 114 } 115 printf(" slot %d", ea->ea_slot); 116 return (UNCONF); 117 } 118 119 int 120 #ifdef __BROKEN_INDIRECT_CONFIG 121 eisasubmatch(parent, match, aux) 122 #else 123 eisasubmatch(parent, cf, aux) 124 #endif 125 struct device *parent; 126 #ifdef __BROKEN_INDIRECT_CONFIG 127 void *match; 128 #else 129 struct cfdata *cf; 130 #endif 131 void *aux; 132 { 133 #ifdef __BROKEN_INDIRECT_CONFIG 134 struct cfdata *cf = match; 135 #endif 136 struct eisa_attach_args *ea = aux; 137 138 if (cf->eisacf_slot != EISA_UNKNOWN_SLOT && 139 cf->eisacf_slot != ea->ea_slot) 140 return 0; 141 return ((*cf->cf_attach->ca_match)(parent, cf, aux)); 142 } 143 144 void 145 eisaattach(parent, self, aux) 146 struct device *parent, *self; 147 void *aux; 148 { 149 struct eisabus_attach_args *eba = aux; 150 bus_space_tag_t iot, memt; 151 bus_dma_tag_t dmat; 152 eisa_chipset_tag_t ec; 153 int slot, maxnslots; 154 155 eisa_attach_hook(parent, self, eba); 156 printf("\n"); 157 158 iot = eba->eba_iot; 159 memt = eba->eba_memt; 160 ec = eba->eba_ec; 161 dmat = eba->eba_dmat; 162 163 /* 164 * Search for and attach subdevices. 165 * 166 * Slot 0 is the "motherboard" slot, and the code attaching 167 * the EISA bus should have already attached an ISA bus there. 168 */ 169 maxnslots = eisa_maxslots(ec); 170 for (slot = 1; slot < maxnslots; slot++) { 171 struct eisa_attach_args ea; 172 u_int slotaddr; 173 bus_space_handle_t slotioh; 174 int i; 175 176 ea.ea_iot = iot; 177 ea.ea_memt = memt; 178 ea.ea_ec = ec; 179 ea.ea_dmat = dmat; 180 ea.ea_slot = slot; 181 slotaddr = EISA_SLOT_ADDR(slot); 182 183 /* 184 * Get a mapping for the whole slot-specific address 185 * space. If we can't, assume nothing's there but warn 186 * about it. 187 */ 188 if (bus_space_map(iot, slotaddr, EISA_SLOT_SIZE, 0, &slotioh)) { 189 printf("%s: can't map I/O space for slot %d\n", 190 self->dv_xname, slot); 191 continue; 192 } 193 194 /* Get the vendor ID bytes */ 195 for (i = 0; i < EISA_NVIDREGS; i++) 196 ea.ea_vid[i] = bus_space_read_1(iot, slotioh, 197 EISA_SLOTOFF_VID + i); 198 199 /* Check for device existence */ 200 if (EISA_VENDID_NODEV(ea.ea_vid)) { 201 #if 0 202 printf("no device at %s slot %d\n", self->dv_xname, 203 slot); 204 printf("\t(0x%x, 0x%x)\n", ea.ea_vid[0], 205 ea.ea_vid[1]); 206 #endif 207 bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE); 208 continue; 209 } 210 211 /* And check that the firmware didn't biff something badly */ 212 if (EISA_VENDID_IDDELAY(ea.ea_vid)) { 213 printf("%s slot %d not configured by BIOS?\n", 214 self->dv_xname, slot); 215 bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE); 216 continue; 217 } 218 219 /* Get the product ID bytes */ 220 for (i = 0; i < EISA_NPIDREGS; i++) 221 ea.ea_pid[i] = bus_space_read_1(iot, slotioh, 222 EISA_SLOTOFF_PID + i); 223 224 /* Create the ID string from the vendor and product IDs */ 225 ea.ea_idstring[0] = EISA_VENDID_0(ea.ea_vid); 226 ea.ea_idstring[1] = EISA_VENDID_1(ea.ea_vid); 227 ea.ea_idstring[2] = EISA_VENDID_2(ea.ea_vid); 228 ea.ea_idstring[3] = EISA_PRODID_0(ea.ea_pid); 229 ea.ea_idstring[4] = EISA_PRODID_1(ea.ea_pid); 230 ea.ea_idstring[5] = EISA_PRODID_2(ea.ea_pid); 231 ea.ea_idstring[6] = EISA_PRODID_3(ea.ea_pid); 232 ea.ea_idstring[7] = '\0'; /* sanity */ 233 234 /* We no longer need the I/O handle; free it. */ 235 bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE); 236 237 /* Attach matching device. */ 238 config_found_sm(self, &ea, eisaprint, eisasubmatch); 239 } 240 } 241 242 #ifdef EISAVERBOSE 243 /* 244 * Descriptions of of known vendors and devices ("products"). 245 */ 246 struct eisa_knowndev { 247 int flags; 248 const char *id, *name; 249 }; 250 #define EISA_KNOWNDEV_NOPROD 0x01 /* match on vendor only */ 251 252 #include <dev/eisa/eisadevs_data.h> 253 #endif /* EISAVERBOSE */ 254 255 void 256 eisa_devinfo(id, cp) 257 const char *id; 258 char *cp; 259 { 260 const char *name; 261 int onlyvendor; 262 #ifdef EISAVERBOSE 263 struct eisa_knowndev *edp; 264 int match; 265 const char *unmatched = "unknown "; 266 #else 267 const char *unmatched = ""; 268 #endif 269 270 onlyvendor = 0; 271 name = NULL; 272 273 #ifdef EISAVERBOSE 274 /* find the device in the table, if possible. */ 275 edp = eisa_knowndevs; 276 while (edp->id != NULL) { 277 /* check this entry for a match */ 278 if ((edp->flags & EISA_KNOWNDEV_NOPROD) != 0) 279 match = !strncmp(edp->id, id, 3); 280 else 281 match = !strcmp(edp->id, id); 282 if (match) { 283 name = edp->name; 284 onlyvendor = (edp->flags & EISA_KNOWNDEV_NOPROD) != 0; 285 break; 286 } 287 edp++; 288 } 289 #endif 290 291 if (name == NULL) 292 cp += sprintf(cp, "%sdevice %s", unmatched, id); 293 else if (onlyvendor) /* never if not EISAVERBOSE */ 294 cp += sprintf(cp, "unknown %s device %s", name, id); 295 else 296 cp += sprintf(cp, "%s", name); 297 } 298
Indexes created Fri Sep 26 20:09:58 GMT 2025