eisa.c revision 1.17
1 /* $NetBSD: eisa.c,v 1.17 1997/06/06 23:30:06 thorpej 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 <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/device.h> 44 45 #include <machine/bus.h> 46 47 #include <dev/eisa/eisareg.h> 48 #include <dev/eisa/eisavar.h> 49 #include <dev/eisa/eisadevs.h> 50 51 #ifdef __BROKEN_INDIRECT_CONFIG 52 int eisamatch __P((struct device *, void *, void *)); 53 #else 54 int eisamatch __P((struct device *, struct cfdata *, void *)); 55 #endif 56 void eisaattach __P((struct device *, struct device *, void *)); 57 58 struct cfattach eisa_ca = { 59 sizeof(struct device), eisamatch, eisaattach 60 }; 61 62 struct cfdriver eisa_cd = { 63 NULL, "eisa", DV_DULL 64 }; 65 66 #ifdef __BROKEN_INDIRECT_CONFIG 67 int eisasubmatch __P((struct device *, void *, void *)); 68 #else 69 int eisasubmatch __P((struct device *, struct cfdata *, void *)); 70 #endif 71 int eisaprint __P((void *, const char *)); 72 void eisa_devinfo __P((const char *, char *)); 73 74 int 75 #ifdef __BROKEN_INDIRECT_CONFIG 76 eisamatch(parent, match, aux) 77 #else 78 eisamatch(parent, cf, aux) 79 #endif 80 struct device *parent; 81 #ifdef __BROKEN_INDIRECT_CONFIG 82 void *match; 83 #else 84 struct cfdata *cf; 85 #endif 86 void *aux; 87 { 88 #ifdef __BROKEN_INDIRECT_CONFIG 89 struct cfdata *cf = match; 90 #endif 91 struct eisabus_attach_args *eba = aux; 92 93 if (strcmp(eba->eba_busname, cf->cf_driver->cd_name)) 94 return (0); 95 96 /* XXX check other indicators */ 97 98 return (1); 99 } 100 101 int 102 eisaprint(aux, pnp) 103 void *aux; 104 const char *pnp; 105 { 106 register struct eisa_attach_args *ea = aux; 107 char devinfo[256]; 108 109 if (pnp) { 110 eisa_devinfo(ea->ea_idstring, devinfo); 111 printf("%s at %s", devinfo, pnp); 112 } 113 printf(" slot %d", ea->ea_slot); 114 return (UNCONF); 115 } 116 117 int 118 #ifdef __BROKEN_INDIRECT_CONFIG 119 eisasubmatch(parent, match, aux) 120 #else 121 eisasubmatch(parent, cf, aux) 122 #endif 123 struct device *parent; 124 #ifdef __BROKEN_INDIRECT_CONFIG 125 void *match; 126 #else 127 struct cfdata *cf; 128 #endif 129 void *aux; 130 { 131 #ifdef __BROKEN_INDIRECT_CONFIG 132 struct cfdata *cf = match; 133 #endif 134 struct eisa_attach_args *ea = aux; 135 136 if (cf->eisacf_slot != EISA_UNKNOWN_SLOT && 137 cf->eisacf_slot != ea->ea_slot) 138 return 0; 139 return ((*cf->cf_attach->ca_match)(parent, cf, aux)); 140 } 141 142 void 143 eisaattach(parent, self, aux) 144 struct device *parent, *self; 145 void *aux; 146 { 147 struct eisabus_attach_args *eba = aux; 148 bus_space_tag_t iot, memt; 149 bus_dma_tag_t dmat; 150 eisa_chipset_tag_t ec; 151 int slot, maxnslots; 152 153 eisa_attach_hook(parent, self, eba); 154 printf("\n"); 155 156 iot = eba->eba_iot; 157 memt = eba->eba_memt; 158 ec = eba->eba_ec; 159 dmat = eba->eba_dmat; 160 161 /* 162 * Search for and attach subdevices. 163 * 164 * Slot 0 is the "motherboard" slot, and the code attaching 165 * the EISA bus should have already attached an ISA bus there. 166 */ 167 maxnslots = eisa_maxslots(ec); 168 for (slot = 1; slot < maxnslots; slot++) { 169 struct eisa_attach_args ea; 170 u_int slotaddr; 171 bus_space_handle_t slotioh; 172 int i; 173 174 ea.ea_iot = iot; 175 ea.ea_memt = memt; 176 ea.ea_ec = ec; 177 ea.ea_dmat = dmat; 178 ea.ea_slot = slot; 179 slotaddr = EISA_SLOT_ADDR(slot); 180 181 /* 182 * Get a mapping for the whole slot-specific address 183 * space. If we can't, assume nothing's there but warn 184 * about it. 185 */ 186 if (bus_space_map(iot, slotaddr, EISA_SLOT_SIZE, 0, &slotioh)) { 187 printf("%s: can't map I/O space for slot %d\n", 188 self->dv_xname, slot); 189 continue; 190 } 191 192 /* Get the vendor ID bytes */ 193 for (i = 0; i < EISA_NVIDREGS; i++) 194 ea.ea_vid[i] = bus_space_read_1(iot, slotioh, 195 EISA_SLOTOFF_VID + i); 196 197 /* Check for device existence */ 198 if (EISA_VENDID_NODEV(ea.ea_vid)) { 199 #if 0 200 printf("no device at %s slot %d\n", self->dv_xname, 201 slot); 202 printf("\t(0x%x, 0x%x)\n", ea.ea_vid[0], 203 ea.ea_vid[1]); 204 #endif 205 bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE); 206 continue; 207 } 208 209 /* And check that the firmware didn't biff something badly */ 210 if (EISA_VENDID_IDDELAY(ea.ea_vid)) { 211 printf("%s slot %d not configured by BIOS?\n", 212 self->dv_xname, slot); 213 bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE); 214 continue; 215 } 216 217 /* Get the product ID bytes */ 218 for (i = 0; i < EISA_NPIDREGS; i++) 219 ea.ea_pid[i] = bus_space_read_1(iot, slotioh, 220 EISA_SLOTOFF_PID + i); 221 222 /* Create the ID string from the vendor and product IDs */ 223 ea.ea_idstring[0] = EISA_VENDID_0(ea.ea_vid); 224 ea.ea_idstring[1] = EISA_VENDID_1(ea.ea_vid); 225 ea.ea_idstring[2] = EISA_VENDID_2(ea.ea_vid); 226 ea.ea_idstring[3] = EISA_PRODID_0(ea.ea_pid); 227 ea.ea_idstring[4] = EISA_PRODID_1(ea.ea_pid); 228 ea.ea_idstring[5] = EISA_PRODID_2(ea.ea_pid); 229 ea.ea_idstring[6] = EISA_PRODID_3(ea.ea_pid); 230 ea.ea_idstring[7] = '\0'; /* sanity */ 231 232 /* We no longer need the I/O handle; free it. */ 233 bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE); 234 235 /* Attach matching device. */ 236 config_found_sm(self, &ea, eisaprint, eisasubmatch); 237 } 238 } 239 240 #ifdef EISAVERBOSE 241 /* 242 * Descriptions of of known vendors and devices ("products"). 243 */ 244 struct eisa_knowndev { 245 int flags; 246 const char *id, *name; 247 }; 248 #define EISA_KNOWNDEV_NOPROD 0x01 /* match on vendor only */ 249 250 #include <dev/eisa/eisadevs_data.h> 251 #endif /* EISAVERBOSE */ 252 253 void 254 eisa_devinfo(id, cp) 255 const char *id; 256 char *cp; 257 { 258 const char *name; 259 int onlyvendor; 260 #ifdef EISAVERBOSE 261 struct eisa_knowndev *edp; 262 int match; 263 const char *unmatched = "unknown "; 264 #else 265 const char *unmatched = ""; 266 #endif 267 268 onlyvendor = 0; 269 name = NULL; 270 271 #ifdef EISAVERBOSE 272 /* find the device in the table, if possible. */ 273 edp = eisa_knowndevs; 274 while (edp->id != NULL) { 275 /* check this entry for a match */ 276 if ((edp->flags & EISA_KNOWNDEV_NOPROD) != 0) 277 match = !strncmp(edp->id, id, 3); 278 else 279 match = !strcmp(edp->id, id); 280 if (match) { 281 name = edp->name; 282 onlyvendor = (edp->flags & EISA_KNOWNDEV_NOPROD) != 0; 283 break; 284 } 285 edp++; 286 } 287 #endif 288 289 if (name == NULL) 290 cp += sprintf(cp, "%sdevice %s", unmatched, id); 291 else if (onlyvendor) /* never if not EISAVERBOSE */ 292 cp += sprintf(cp, "unknown %s device %s", name, id); 293 else 294 cp += sprintf(cp, "%s", name); 295 } 296
Indexes created Sun Sep 28 16:09:52 GMT 2025