eisa.c revision 1.6
1 /* $NetBSD: eisa.c,v 1.6 1996/03/08 20:39:32 cgd 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 struct eisa_softc { 52 struct device sc_dev; 53 54 bus_chipset_tag_t sc_bc; 55 }; 56 57 int eisamatch __P((struct device *, void *, void *)); 58 void eisaattach __P((struct device *, struct device *, void *)); 59 60 struct cfdriver eisacd = { 61 NULL, "eisa", eisamatch, eisaattach, DV_DULL, sizeof(struct eisa_softc) 62 }; 63 64 int eisasubmatch __P((struct device *, void *, void *)); 65 int eisaprint __P((void *, char *)); 66 void eisa_devinfo __P((const char *, char *)); 67 68 int 69 eisamatch(parent, match, aux) 70 struct device *parent; 71 void *match, *aux; 72 { 73 struct cfdata *cf = match; 74 struct eisabus_attach_args *eba = aux; 75 76 if (strcmp(eba->eba_busname, cf->cf_driver->cd_name)) 77 return (0); 78 79 /* XXX check other indicators */ 80 81 return (1); 82 } 83 84 int 85 eisaprint(aux, pnp) 86 void *aux; 87 char *pnp; 88 { 89 register struct eisa_attach_args *ea = aux; 90 char devinfo[256]; 91 92 if (pnp) { 93 eisa_devinfo(ea->ea_idstring, devinfo); 94 printf("%s at %s", devinfo, pnp); 95 } 96 printf(" slot %d", ea->ea_slot); 97 return (UNCONF); 98 } 99 100 int 101 eisasubmatch(parent, match, aux) 102 struct device *parent; 103 void *match, *aux; 104 { 105 struct cfdata *cf = match; 106 struct eisa_attach_args *ea = aux; 107 108 if (cf->eisacf_slot != EISA_UNKNOWN_SLOT && 109 cf->eisacf_slot != ea->ea_slot) 110 return 0; 111 return ((*cf->cf_driver->cd_match)(parent, match, aux)); 112 } 113 114 void 115 eisaattach(parent, self, aux) 116 struct device *parent, *self; 117 void *aux; 118 { 119 struct eisa_softc *sc = (struct eisa_softc *)self; 120 struct eisabus_attach_args *eba = aux; 121 bus_chipset_tag_t bc; 122 int slot; 123 124 printf("\n"); 125 126 sc->sc_bc = bc = eba->eba_bc; 127 128 /* 129 * Search for and attach subdevices. 130 * 131 * Slot 0 is the "motherboard" slot, and the code attaching 132 * the EISA bus should have already attached an ISA bus there. 133 */ 134 for (slot = 1; slot < EISA_MAX_SLOT; slot++) { 135 struct eisa_attach_args ea; 136 struct cfdata *cf; 137 u_int slotaddr; 138 bus_io_handle_t slotioh; 139 int i; 140 141 ea.ea_bc = bc; 142 ea.ea_slot = slot; 143 slotaddr = EISA_SLOT_ADDR(slot); 144 145 /* 146 * Get a mapping for the whole slot-specific address 147 * space. If we can't, assume nothing's there but warn 148 * about it. 149 */ 150 if (bus_io_map(bc, slotaddr, EISA_SLOT_SIZE, &slotioh)) { 151 printf("%s: can't map I/O space for slot %d\n", slot); 152 continue; 153 } 154 155 /* Get the vendor ID bytes */ 156 for (i = 0; i < EISA_NVIDREGS; i++) 157 ea.ea_vid[i] = bus_io_read_1(bc, slotioh, 158 EISA_SLOTOFF_VID + i); 159 160 /* Check for device existence */ 161 if (EISA_VENDID_NODEV(ea.ea_vid)) { 162 #if 0 163 printf("no device at %s slot %d\n", sc->sc_dev.dv_xname, 164 slot); 165 printf("\t(0x%x, 0x%x)\n", ea.ea_vid[0], 166 ea.ea_vid[1]); 167 #endif 168 bus_io_unmap(bc, slotioh, EISA_SLOT_SIZE); 169 continue; 170 } 171 172 /* And check that the firmware didn't biff something badly */ 173 if (EISA_VENDID_IDDELAY(ea.ea_vid)) { 174 printf("%s slot %d not configured by BIOS?\n", 175 self->dv_xname, slot); 176 bus_io_unmap(bc, slotioh, EISA_SLOT_SIZE); 177 continue; 178 } 179 180 /* Get the product ID bytes */ 181 for (i = 0; i < EISA_NPIDREGS; i++) 182 ea.ea_pid[i] = bus_io_read_1(bc, slotioh, 183 EISA_SLOTOFF_PID + i); 184 185 /* Create the ID string from the vendor and product IDs */ 186 ea.ea_idstring[0] = EISA_VENDID_0(ea.ea_vid); 187 ea.ea_idstring[1] = EISA_VENDID_1(ea.ea_vid); 188 ea.ea_idstring[2] = EISA_VENDID_2(ea.ea_vid); 189 ea.ea_idstring[3] = EISA_PRODID_0(ea.ea_pid); 190 ea.ea_idstring[4] = EISA_PRODID_1(ea.ea_pid); 191 ea.ea_idstring[5] = EISA_PRODID_2(ea.ea_pid); 192 ea.ea_idstring[6] = EISA_PRODID_3(ea.ea_pid); 193 ea.ea_idstring[7] = '\0'; /* sanity */ 194 195 /* We no longer need the I/O handle; free it. */ 196 bus_io_unmap(bc, slotioh, EISA_SLOT_SIZE); 197 198 /* Attach matching device. */ 199 config_found_sm(self, &ea, eisaprint, eisasubmatch); 200 } 201 } 202 203 #ifdef EISAVERBOSE 204 /* 205 * Descriptions of of known vendors and devices ("products"). 206 */ 207 struct eisa_knowndev { 208 int flags; 209 const char *id, *name; 210 }; 211 #define EISA_KNOWNDEV_NOPROD 0x01 /* match on vendor only */ 212 213 #include <dev/eisa/eisadevs_data.h> 214 #endif /* EISAVERBOSE */ 215 216 void 217 eisa_devinfo(id, cp) 218 const char *id; 219 char *cp; 220 { 221 const char *name; 222 int onlyvendor; 223 #ifdef EISAVERBOSE 224 struct eisa_knowndev *edp; 225 int match; 226 const char *unmatched = "unknown "; 227 #else 228 const char *unmatched = ""; 229 #endif 230 231 onlyvendor = 0; 232 name = NULL; 233 234 #ifdef EISAVERBOSE 235 /* find the device in the table, if possible. */ 236 edp = eisa_knowndevs; 237 while (edp->id != NULL) { 238 /* check this entry for a match */ 239 if ((edp->flags & EISA_KNOWNDEV_NOPROD) != 0) 240 match = !strncmp(edp->id, id, 3); 241 else 242 match = !strcmp(edp->id, id); 243 if (match) { 244 name = edp->name; 245 onlyvendor = (edp->flags & EISA_KNOWNDEV_NOPROD) != 0; 246 break; 247 } 248 edp++; 249 } 250 #endif 251 252 if (name == NULL) 253 cp += sprintf(cp, "%sdevice %s", unmatched, id); 254 else if (onlyvendor) /* never if not EISAVERBOSE */ 255 cp += sprintf(cp, "unknown %s device %s", name, id); 256 else 257 cp += sprintf(cp, "%s", name); 258 } 259
Indexes created Mon Sep 29 03:10:08 GMT 2025