eisa.c revision 1.2
1 /* $NetBSD: eisa.c,v 1.2 1996/02/27 21:51:17 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 <dev/eisa/eisareg.h> 46 #include <dev/eisa/eisavar.h> 47 #include <dev/eisa/eisadevs.h> 48 49 #include <machine/pio.h> /* XXX shouldn't use inb directly */ 50 51 struct eisa_softc { 52 struct device sc_dev; /* this is it, for now */ 53 }; 54 55 int eisamatch __P((struct device *, void *, void *)); 56 void eisaattach __P((struct device *, struct device *, void *)); 57 58 struct cfdriver eisacd = { 59 NULL, "eisa", eisamatch, eisaattach, DV_DULL, sizeof(struct eisa_softc) 60 }; 61 62 int eisasubmatch __P((struct device *, void *, void *)); 63 int eisaprint __P((void *, char *)); 64 void eisa_devinfo __P((const char *, char *)); 65 66 int 67 eisamatch(parent, match, aux) 68 struct device *parent; 69 void *match, *aux; 70 { 71 struct cfdata *cf = match; 72 struct eisabus_attach_args *eba = aux; 73 74 if (strcmp(eba->eba_busname, cf->cf_driver->cd_name)) 75 return (0); 76 77 /* XXX check other indicators */ 78 79 return (1); 80 } 81 82 int 83 eisaprint(aux, pnp) 84 void *aux; 85 char *pnp; 86 { 87 register struct eisa_attach_args *ea = aux; 88 char devinfo[256]; 89 90 if (pnp) { 91 eisa_devinfo(ea->ea_idstring, devinfo); 92 printf("%s at %s", devinfo, pnp); 93 } 94 printf(" slot %d", ea->ea_slot); 95 return (UNCONF); 96 } 97 98 int 99 eisasubmatch(parent, match, aux) 100 struct device *parent; 101 void *match, *aux; 102 { 103 struct cfdata *cf = match; 104 struct eisa_attach_args *ea = aux; 105 106 if (cf->eisacf_slot != EISA_UNKNOWN_SLOT && 107 cf->eisacf_slot != ea->ea_slot) 108 return 0; 109 return ((*cf->cf_driver->cd_match)(parent, match, aux)); 110 } 111 112 void 113 eisaattach(parent, self, aux) 114 struct device *parent, *self; 115 void *aux; 116 { 117 struct eisa_softc *sc = (struct eisa_softc *)self; 118 int slot; 119 120 printf("\n"); 121 122 /* 123 * Search for and attach subdevices. 124 * 125 * Slot 0 is the "motherboard" slot, and the code attaching 126 * the EISA bus should have already attached an ISA bus there. 127 */ 128 for (slot = 1; slot < EISA_MAX_SLOT; slot++) { 129 struct eisa_attach_args ea; 130 struct cfdata *cf; 131 u_int slotaddr; 132 int i; 133 134 ea.ea_slot = slot; 135 slotaddr = EISA_SLOT_ADDR(slot); 136 #if 0 137 printf("%s slot %d: at 0x%x\n", sc->sc_dev.dv_xname, slot, 138 slotaddr); 139 #endif 140 141 /* Get the vendor ID bytes */ 142 for (i = 0; i < EISA_NVIDREGS; i++) 143 ea.ea_vid[i] = inb(slotaddr + EISA_SLOTOFF_VID + i); 144 145 /* Check for device existence */ 146 if (EISA_VENDID_NODEV(ea.ea_vid)) { 147 #if 0 148 printf("%s slot %d: no device\n", sc->sc_dev.dv_xname, 149 slot); 150 printf("\t(0x%x, 0x%x)\n", ea.ea_vid[0], 151 ea.ea_vid[1]); 152 #endif 153 continue; 154 } 155 156 /* And check that the firmware didn't biff something badly */ 157 if (EISA_VENDID_IDDELAY(ea.ea_vid)) { 158 printf("%s slot %d: slot not configured by BIOS?\n", 159 self->dv_xname, slot); 160 continue; 161 } 162 163 /* Get the product ID bytes */ 164 for (i = 0; i < EISA_NPIDREGS; i++) 165 ea.ea_pid[i] = inb(slotaddr + EISA_SLOTOFF_PID + i); 166 167 /* Create the ID string from the vendor and product IDs */ 168 ea.ea_idstring[0] = EISA_VENDID_0(ea.ea_vid); 169 ea.ea_idstring[1] = EISA_VENDID_1(ea.ea_vid); 170 ea.ea_idstring[2] = EISA_VENDID_2(ea.ea_vid); 171 ea.ea_idstring[3] = EISA_PRODID_0(ea.ea_pid); 172 ea.ea_idstring[4] = EISA_PRODID_1(ea.ea_pid); 173 ea.ea_idstring[5] = EISA_PRODID_2(ea.ea_pid); 174 ea.ea_idstring[6] = EISA_PRODID_3(ea.ea_pid); 175 ea.ea_idstring[7] = '\0'; /* sanity */ 176 177 /* Attach matching device. */ 178 config_found_sm(self, &ea, eisaprint, eisasubmatch); 179 } 180 } 181 182 #ifdef EISAVERBOSE 183 /* 184 * Descriptions of of known vendors and devices ("products"). 185 */ 186 struct eisa_knowndev { 187 int flags; 188 const char *id, *name; 189 }; 190 #define EISA_KNOWNDEV_NOPROD 0x01 /* match on vendor only */ 191 192 #include <dev/eisa/eisadevs_data.h> 193 #endif /* EISAVERBOSE */ 194 195 void 196 eisa_devinfo(id, cp) 197 const char *id; 198 char *cp; 199 { 200 const char *name; 201 int onlyvendor; 202 #ifdef EISAVERBOSE 203 struct eisa_knowndev *edp; 204 int match; 205 #endif 206 207 onlyvendor = 0; 208 name = NULL; 209 210 #ifdef EISAVERBOSE 211 /* find the device in the table, if possible. */ 212 edp = eisa_knowndevs; 213 while (edp->id != NULL) { 214 /* check this entry for a match */ 215 if ((edp->flags & EISA_KNOWNDEV_NOPROD) != 0) 216 match = !strncmp(edp->id, id, 3); 217 else 218 match = !strcmp(edp->id, id); 219 if (match) { 220 name = edp->name; 221 onlyvendor = (edp->flags & EISA_KNOWNDEV_NOPROD) != 0; 222 break; 223 } 224 edp++; 225 } 226 #endif 227 228 if (name == NULL) 229 cp += sprintf(cp, "unknown device %s", id); 230 else if (onlyvendor) 231 cp += sprintf(cp, "unknown %s device %s", name, id); 232 else 233 cp += sprintf(cp, "%s", name); 234 } 235
Indexes created Fri Sep 26 20:09:58 GMT 2025