eisa.c revision 1.24
1 /* $NetBSD: eisa.c,v 1.24 2001/01/18 20:28:25 jdolecek 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 int eisamatch(struct device *, struct cfdata *, void *); 54 void eisaattach(struct device *, struct device *, void *); 55 56 struct cfattach eisa_ca = { 57 sizeof(struct device), eisamatch, eisaattach 58 }; 59 60 int eisasubmatch(struct device *, struct cfdata *, void *); 61 int eisaprint(void *, const char *); 62 void eisa_devinfo(const char *, char *); 63 64 int 65 eisamatch(struct device *parent, struct cfdata *cf, void *aux) 66 { 67 struct eisabus_attach_args *eba = aux; 68 69 if (strcmp(eba->eba_busname, cf->cf_driver->cd_name)) 70 return (0); 71 72 /* XXX check other indicators */ 73 74 return (1); 75 } 76 77 int 78 eisaprint(void *aux, const char *pnp) 79 { 80 struct eisa_attach_args *ea = aux; 81 char devinfo[256]; 82 83 if (pnp) { 84 eisa_devinfo(ea->ea_idstring, devinfo); 85 printf("%s at %s", devinfo, pnp); 86 } 87 printf(" slot %d", ea->ea_slot); 88 return (UNCONF); 89 } 90 91 int 92 eisasubmatch(struct device *parent, struct cfdata *cf, void *aux) 93 { 94 struct eisa_attach_args *ea = aux; 95 96 if (cf->eisacf_slot != EISA_UNKNOWN_SLOT && 97 cf->eisacf_slot != ea->ea_slot) 98 return (0); 99 return ((*cf->cf_attach->ca_match)(parent, cf, aux)); 100 } 101 102 void 103 eisaattach(struct device *parent, struct device *self, void *aux) 104 { 105 struct eisabus_attach_args *eba = aux; 106 bus_space_tag_t iot, memt; 107 bus_dma_tag_t dmat; 108 eisa_chipset_tag_t ec; 109 int slot, maxnslots; 110 111 eisa_attach_hook(parent, self, eba); 112 printf("\n"); 113 114 iot = eba->eba_iot; 115 memt = eba->eba_memt; 116 ec = eba->eba_ec; 117 dmat = eba->eba_dmat; 118 119 /* 120 * Search for and attach subdevices. 121 * 122 * Slot 0 is the "motherboard" slot, and the code attaching 123 * the EISA bus should have already attached an ISA bus there. 124 */ 125 maxnslots = eisa_maxslots(ec); 126 for (slot = 1; slot < maxnslots; slot++) { 127 struct eisa_attach_args ea; 128 u_int slotaddr; 129 bus_space_handle_t slotioh; 130 int i; 131 132 ea.ea_iot = iot; 133 ea.ea_memt = memt; 134 ea.ea_ec = ec; 135 ea.ea_dmat = dmat; 136 ea.ea_slot = slot; 137 slotaddr = EISA_SLOT_ADDR(slot); 138 139 /* 140 * Get a mapping for the whole slot-specific address 141 * space. If we can't, assume nothing's there but warn 142 * about it. 143 */ 144 if (bus_space_map(iot, slotaddr, EISA_SLOT_SIZE, 0, &slotioh)) { 145 printf("%s: can't map I/O space for slot %d\n", 146 self->dv_xname, slot); 147 continue; 148 } 149 150 /* Get the vendor ID bytes */ 151 for (i = 0; i < EISA_NVIDREGS; i++) 152 ea.ea_vid[i] = bus_space_read_1(iot, slotioh, 153 EISA_SLOTOFF_VID + i); 154 155 /* Check for device existence */ 156 if (EISA_VENDID_NODEV(ea.ea_vid)) { 157 #if 0 158 printf("no device at %s slot %d\n", self->dv_xname, 159 slot); 160 printf("\t(0x%x, 0x%x)\n", ea.ea_vid[0], 161 ea.ea_vid[1]); 162 #endif 163 bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE); 164 continue; 165 } 166 167 /* And check that the firmware didn't biff something badly */ 168 if (EISA_VENDID_IDDELAY(ea.ea_vid)) { 169 printf("%s slot %d not configured by BIOS?\n", 170 self->dv_xname, slot); 171 bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE); 172 continue; 173 } 174 175 /* Get the product ID bytes */ 176 for (i = 0; i < EISA_NPIDREGS; i++) 177 ea.ea_pid[i] = bus_space_read_1(iot, slotioh, 178 EISA_SLOTOFF_PID + i); 179 180 /* Create the ID string from the vendor and product IDs */ 181 ea.ea_idstring[0] = EISA_VENDID_0(ea.ea_vid); 182 ea.ea_idstring[1] = EISA_VENDID_1(ea.ea_vid); 183 ea.ea_idstring[2] = EISA_VENDID_2(ea.ea_vid); 184 ea.ea_idstring[3] = EISA_PRODID_0(ea.ea_pid); 185 ea.ea_idstring[4] = EISA_PRODID_1(ea.ea_pid); 186 ea.ea_idstring[5] = EISA_PRODID_2(ea.ea_pid); 187 ea.ea_idstring[6] = EISA_PRODID_3(ea.ea_pid); 188 ea.ea_idstring[7] = '\0'; /* sanity */ 189 190 /* We no longer need the I/O handle; free it. */ 191 bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE); 192 193 /* Attach matching device. */ 194 config_found_sm(self, &ea, eisaprint, eisasubmatch); 195 } 196 } 197 198 #ifdef EISAVERBOSE 199 /* 200 * Descriptions of of known vendors and devices ("products"). 201 */ 202 struct eisa_knowndev { 203 int flags; 204 const char *id, *name; 205 }; 206 #define EISA_KNOWNDEV_NOPROD 0x01 /* match on vendor only */ 207 208 #include <dev/eisa/eisadevs_data.h> 209 #endif /* EISAVEBSOSE */ 210 211 void 212 eisa_devinfo(const char *id, char *cp) 213 { 214 #ifdef EISAVERBOSE 215 const char *name; 216 const struct eisa_knowndev *edp; 217 int match, onlyvendor; 218 219 onlyvendor = 0; 220 name = NULL; 221 222 /* find the device in the table, if possible. */ 223 for (edp = eisa_knowndevs; edp->id != NULL; edp++) { 224 if ((edp->flags & EISA_KNOWNDEV_NOPROD) != 0) 225 match = (strncmp(edp->id, id, 3) == 0); 226 else 227 match = (strcmp(edp->id, id) == 0); 228 if (match) { 229 name = edp->name; 230 onlyvendor = (edp->flags & EISA_KNOWNDEV_NOPROD) != 0; 231 break; 232 } 233 } 234 235 if (name == NULL) 236 sprintf(cp, "unknown device %s", id); 237 else if (onlyvendor) 238 sprintf(cp, "unknown %s device %s", name, id); 239 else 240 sprintf(cp, "%s", name); 241 #else /* EISAVERBOSE */ 242 243 sprintf(cp, "device %s", id); 244 #endif /* EISAVERBOSE */ 245 } 246
Indexes created Sun Sep 28 16:09:52 GMT 2025