eisa.c revision 1.7
1 /* $NetBSD: eisa.c,v 1.7 1996/03/14 04:02:58 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 int eisamatch __P((struct device *, void *, void *)); 52 void eisaattach __P((struct device *, struct device *, void *)); 53 54 struct cfdriver eisacd = { 55 NULL, "eisa", eisamatch, eisaattach, DV_DULL, sizeof(struct device) 56 }; 57 58 int eisasubmatch __P((struct device *, void *, void *)); 59 int eisaprint __P((void *, char *)); 60 void eisa_devinfo __P((const char *, char *)); 61 62 int 63 eisamatch(parent, match, aux) 64 struct device *parent; 65 void *match, *aux; 66 { 67 struct cfdata *cf = match; 68 struct eisabus_attach_args *eba = aux; 69 70 if (strcmp(eba->eba_busname, cf->cf_driver->cd_name)) 71 return (0); 72 73 /* XXX check other indicators */ 74 75 return (1); 76 } 77 78 int 79 eisaprint(aux, pnp) 80 void *aux; 81 char *pnp; 82 { 83 register struct eisa_attach_args *ea = aux; 84 char devinfo[256]; 85 86 if (pnp) { 87 eisa_devinfo(ea->ea_idstring, devinfo); 88 printf("%s at %s", devinfo, pnp); 89 } 90 printf(" slot %d", ea->ea_slot); 91 return (UNCONF); 92 } 93 94 int 95 eisasubmatch(parent, match, aux) 96 struct device *parent; 97 void *match, *aux; 98 { 99 struct cfdata *cf = match; 100 struct eisa_attach_args *ea = aux; 101 102 if (cf->eisacf_slot != EISA_UNKNOWN_SLOT && 103 cf->eisacf_slot != ea->ea_slot) 104 return 0; 105 return ((*cf->cf_driver->cd_match)(parent, match, aux)); 106 } 107 108 void 109 eisaattach(parent, self, aux) 110 struct device *parent, *self; 111 void *aux; 112 { 113 struct eisabus_attach_args *eba = aux; 114 bus_chipset_tag_t bc; 115 int slot; 116 117 printf("\n"); 118 119 bc = eba->eba_bc; 120 121 /* 122 * Search for and attach subdevices. 123 * 124 * Slot 0 is the "motherboard" slot, and the code attaching 125 * the EISA bus should have already attached an ISA bus there. 126 */ 127 for (slot = 1; slot < EISA_MAX_SLOT; slot++) { 128 struct eisa_attach_args ea; 129 struct cfdata *cf; 130 u_int slotaddr; 131 bus_io_handle_t slotioh; 132 int i; 133 134 ea.ea_bc = bc; 135 ea.ea_slot = slot; 136 slotaddr = EISA_SLOT_ADDR(slot); 137 138 /* 139 * Get a mapping for the whole slot-specific address 140 * space. If we can't, assume nothing's there but warn 141 * about it. 142 */ 143 if (bus_io_map(bc, slotaddr, EISA_SLOT_SIZE, &slotioh)) { 144 printf("%s: can't map I/O space for slot %d\n", slot); 145 continue; 146 } 147 148 /* Get the vendor ID bytes */ 149 for (i = 0; i < EISA_NVIDREGS; i++) 150 ea.ea_vid[i] = bus_io_read_1(bc, slotioh, 151 EISA_SLOTOFF_VID + i); 152 153 /* Check for device existence */ 154 if (EISA_VENDID_NODEV(ea.ea_vid)) { 155 #if 0 156 printf("no device at %s slot %d\n", self->dv_xname, 157 slot); 158 printf("\t(0x%x, 0x%x)\n", ea.ea_vid[0], 159 ea.ea_vid[1]); 160 #endif 161 bus_io_unmap(bc, slotioh, EISA_SLOT_SIZE); 162 continue; 163 } 164 165 /* And check that the firmware didn't biff something badly */ 166 if (EISA_VENDID_IDDELAY(ea.ea_vid)) { 167 printf("%s slot %d not configured by BIOS?\n", 168 self->dv_xname, slot); 169 bus_io_unmap(bc, slotioh, EISA_SLOT_SIZE); 170 continue; 171 } 172 173 /* Get the product ID bytes */ 174 for (i = 0; i < EISA_NPIDREGS; i++) 175 ea.ea_pid[i] = bus_io_read_1(bc, slotioh, 176 EISA_SLOTOFF_PID + i); 177 178 /* Create the ID string from the vendor and product IDs */ 179 ea.ea_idstring[0] = EISA_VENDID_0(ea.ea_vid); 180 ea.ea_idstring[1] = EISA_VENDID_1(ea.ea_vid); 181 ea.ea_idstring[2] = EISA_VENDID_2(ea.ea_vid); 182 ea.ea_idstring[3] = EISA_PRODID_0(ea.ea_pid); 183 ea.ea_idstring[4] = EISA_PRODID_1(ea.ea_pid); 184 ea.ea_idstring[5] = EISA_PRODID_2(ea.ea_pid); 185 ea.ea_idstring[6] = EISA_PRODID_3(ea.ea_pid); 186 ea.ea_idstring[7] = '\0'; /* sanity */ 187 188 /* We no longer need the I/O handle; free it. */ 189 bus_io_unmap(bc, slotioh, EISA_SLOT_SIZE); 190 191 /* Attach matching device. */ 192 config_found_sm(self, &ea, eisaprint, eisasubmatch); 193 } 194 } 195 196 #ifdef EISAVERBOSE 197 /* 198 * Descriptions of of known vendors and devices ("products"). 199 */ 200 struct eisa_knowndev { 201 int flags; 202 const char *id, *name; 203 }; 204 #define EISA_KNOWNDEV_NOPROD 0x01 /* match on vendor only */ 205 206 #include <dev/eisa/eisadevs_data.h> 207 #endif /* EISAVERBOSE */ 208 209 void 210 eisa_devinfo(id, cp) 211 const char *id; 212 char *cp; 213 { 214 const char *name; 215 int onlyvendor; 216 #ifdef EISAVERBOSE 217 struct eisa_knowndev *edp; 218 int match; 219 const char *unmatched = "unknown "; 220 #else 221 const char *unmatched = ""; 222 #endif 223 224 onlyvendor = 0; 225 name = NULL; 226 227 #ifdef EISAVERBOSE 228 /* find the device in the table, if possible. */ 229 edp = eisa_knowndevs; 230 while (edp->id != NULL) { 231 /* check this entry for a match */ 232 if ((edp->flags & EISA_KNOWNDEV_NOPROD) != 0) 233 match = !strncmp(edp->id, id, 3); 234 else 235 match = !strcmp(edp->id, id); 236 if (match) { 237 name = edp->name; 238 onlyvendor = (edp->flags & EISA_KNOWNDEV_NOPROD) != 0; 239 break; 240 } 241 edp++; 242 } 243 #endif 244 245 if (name == NULL) 246 cp += sprintf(cp, "%sdevice %s", unmatched, id); 247 else if (onlyvendor) /* never if not EISAVERBOSE */ 248 cp += sprintf(cp, "unknown %s device %s", name, id); 249 else 250 cp += sprintf(cp, "%s", name); 251 } 252
Indexes created Mon Sep 29 03:10:08 GMT 2025