eisa.c revision 1.33
1 /* $NetBSD: eisa.c,v 1.33 2004/08/23 05:50:02 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/cdefs.h> 42 __KERNEL_RCSID(0, "$NetBSD: eisa.c,v 1.33 2004/08/23 05:50:02 thorpej Exp $"); 43 44 #include "opt_eisaverbose.h" 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/device.h> 49 50 #include <machine/bus.h> 51 52 #include <dev/eisa/eisareg.h> 53 #include <dev/eisa/eisavar.h> 54 #include <dev/eisa/eisadevs.h> 55 56 static int eisamatch(struct device *, struct cfdata *, void *); 57 static void eisaattach(struct device *, struct device *, void *); 58 59 CFATTACH_DECL(eisa, sizeof(struct device), 60 eisamatch, eisaattach, NULL, NULL); 61 62 static int eisasubmatch(struct device *, struct cfdata *, void *); 63 static int eisaprint(void *, const char *); 64 static void eisa_devinfo(const char *, char *, size_t); 65 66 static int 67 eisamatch(struct device *parent, struct cfdata *cf, void *aux) 68 { 69 struct eisabus_attach_args *eba = aux; 70 71 if (strcmp(eba->eba_busname, cf->cf_name)) 72 return (0); 73 74 /* XXX check other indicators */ 75 76 return (1); 77 } 78 79 static int 80 eisaprint(void *aux, const char *pnp) 81 { 82 struct eisa_attach_args *ea = aux; 83 char devinfo[256]; 84 85 if (pnp) { 86 eisa_devinfo(ea->ea_idstring, devinfo, sizeof(devinfo)); 87 aprint_normal("%s at %s", devinfo, pnp); 88 } 89 aprint_normal(" slot %d", ea->ea_slot); 90 return (UNCONF); 91 } 92 93 static int 94 eisasubmatch(struct device *parent, struct cfdata *cf, void *aux) 95 { 96 struct eisa_attach_args *ea = aux; 97 98 if (cf->eisacf_slot != EISA_UNKNOWN_SLOT && 99 cf->eisacf_slot != ea->ea_slot) 100 return (0); 101 return (config_match(parent, cf, aux)); 102 } 103 104 static void 105 eisaattach(struct device *parent, struct device *self, void *aux) 106 { 107 struct eisabus_attach_args *eba = aux; 108 bus_space_tag_t iot, memt; 109 bus_dma_tag_t dmat; 110 eisa_chipset_tag_t ec; 111 int slot, maxnslots; 112 113 eisa_attach_hook(parent, self, eba); 114 printf("\n"); 115 116 iot = eba->eba_iot; 117 memt = eba->eba_memt; 118 ec = eba->eba_ec; 119 dmat = eba->eba_dmat; 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 maxnslots = eisa_maxslots(ec); 128 for (slot = 1; slot < maxnslots; slot++) { 129 struct eisa_attach_args ea; 130 u_int slotaddr; 131 bus_space_handle_t slotioh; 132 int i; 133 134 ea.ea_iot = iot; 135 ea.ea_memt = memt; 136 ea.ea_ec = ec; 137 ea.ea_dmat = dmat; 138 ea.ea_slot = slot; 139 slotaddr = EISA_SLOT_ADDR(slot); 140 141 /* 142 * Get a mapping for the whole slot-specific address 143 * space. If we can't, assume nothing's there but warn 144 * about it. 145 */ 146 if (bus_space_map(iot, slotaddr, EISA_SLOT_SIZE, 0, &slotioh)) { 147 printf("%s: can't map I/O space for slot %d\n", 148 self->dv_xname, slot); 149 continue; 150 } 151 152 /* Get the vendor ID bytes */ 153 for (i = 0; i < EISA_NVIDREGS; i++) 154 ea.ea_vid[i] = bus_space_read_1(iot, slotioh, 155 EISA_SLOTOFF_VID + i); 156 157 /* Check for device existence */ 158 if (EISA_VENDID_NODEV(ea.ea_vid)) { 159 #if 0 160 printf("no device at %s slot %d\n", self->dv_xname, 161 slot); 162 printf("\t(0x%x, 0x%x)\n", ea.ea_vid[0], 163 ea.ea_vid[1]); 164 #endif 165 bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE); 166 continue; 167 } 168 169 /* And check that the firmware didn't biff something badly */ 170 if (EISA_VENDID_IDDELAY(ea.ea_vid)) { 171 printf("%s slot %d not configured by BIOS?\n", 172 self->dv_xname, slot); 173 bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE); 174 continue; 175 } 176 177 /* Get the product ID bytes */ 178 for (i = 0; i < EISA_NPIDREGS; i++) 179 ea.ea_pid[i] = bus_space_read_1(iot, slotioh, 180 EISA_SLOTOFF_PID + i); 181 182 /* Create the ID string from the vendor and product IDs */ 183 ea.ea_idstring[0] = EISA_VENDID_0(ea.ea_vid); 184 ea.ea_idstring[1] = EISA_VENDID_1(ea.ea_vid); 185 ea.ea_idstring[2] = EISA_VENDID_2(ea.ea_vid); 186 ea.ea_idstring[3] = EISA_PRODID_0(ea.ea_pid); 187 ea.ea_idstring[4] = EISA_PRODID_1(ea.ea_pid); 188 ea.ea_idstring[5] = EISA_PRODID_2(ea.ea_pid); 189 ea.ea_idstring[6] = EISA_PRODID_3(ea.ea_pid); 190 ea.ea_idstring[7] = '\0'; /* sanity */ 191 192 /* We no longer need the I/O handle; free it. */ 193 bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE); 194 195 /* Attach matching device. */ 196 config_found_sm(self, &ea, eisaprint, eisasubmatch); 197 } 198 } 199 200 #ifdef EISAVERBOSE 201 /* 202 * Descriptions of of known vendors and devices ("products"). 203 */ 204 struct eisa_knowndev { 205 int flags; 206 const char *id, *name; 207 }; 208 #define EISA_KNOWNDEV_NOPROD 0x01 /* match on vendor only */ 209 210 #include <dev/eisa/eisadevs_data.h> 211 #endif /* EISAVEBSOSE */ 212 213 void 214 eisa_devinfo(const char *id, char *cp, size_t l) 215 { 216 #ifdef EISAVERBOSE 217 const char *name; 218 const struct eisa_knowndev *edp; 219 int match, onlyvendor; 220 221 onlyvendor = 0; 222 name = NULL; 223 224 /* find the device in the table, if possible. */ 225 for (edp = eisa_knowndevs; edp->id != NULL; edp++) { 226 if ((edp->flags & EISA_KNOWNDEV_NOPROD) != 0) 227 match = (strncmp(edp->id, id, 3) == 0); 228 else 229 match = (strcmp(edp->id, id) == 0); 230 if (match) { 231 name = edp->name; 232 onlyvendor = (edp->flags & EISA_KNOWNDEV_NOPROD) != 0; 233 break; 234 } 235 } 236 237 if (name == NULL) 238 snprintf(cp, l, "unknown device %s", id); 239 else if (onlyvendor) 240 snprintf(cp, l, "unknown %s device %s", name, id); 241 else 242 snprintf(cp, l, "%s", name); 243 #else /* EISAVERBOSE */ 244 245 snprintf(cp, l, "device %s", id); 246 #endif /* EISAVERBOSE */ 247 } 248
Indexes created Fri Sep 26 08:10:20 GMT 2025