1 /* $NetBSD: eisa.c,v 1.50 2024/05/13 00:01:53 msaitoh 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 1.50 2024/05/13 00:01:53 msaitoh 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 <sys/bus.h> 51 52 #include <dev/eisa/eisareg.h> 53 #include <dev/eisa/eisavar.h> 54 #include <dev/eisa/eisadevs.h> 55 56 #include "locators.h" 57 58 static int eisamatch(device_t, cfdata_t, void *); 59 static void eisaattach(device_t, device_t, void *); 60 61 CFATTACH_DECL_NEW(eisa, 0, 62 eisamatch, eisaattach, NULL, NULL); 63 64 static int eisaprint(void *, const char *); 65 static void eisa_devinfo(const char *, char *, size_t); 66 67 static int 68 eisamatch(device_t parent, cfdata_t cf, 69 void *aux) 70 { 71 /* XXX check other indicators */ 72 73 return (1); 74 } 75 76 static int 77 eisaprint(void *aux, const char *pnp) 78 { 79 struct eisa_attach_args *ea = aux; 80 char devinfo[256]; 81 82 if (pnp) { 83 eisa_devinfo(ea->ea_idstring, devinfo, sizeof(devinfo)); 84 aprint_normal("%s at %s", devinfo, pnp); 85 } 86 aprint_normal(" slot %d", ea->ea_slot); 87 return (UNCONF); 88 } 89 90 static void 91 eisaattach(device_t parent, device_t self, void *aux) 92 { 93 struct eisabus_attach_args *eba = aux; 94 bus_space_tag_t iot, memt; 95 bus_dma_tag_t dmat; 96 eisa_chipset_tag_t ec; 97 int slot, maxnslots; 98 99 eisa_attach_hook(parent, self, eba); 100 printf("\n"); 101 102 iot = eba->eba_iot; 103 memt = eba->eba_memt; 104 ec = eba->eba_ec; 105 dmat = eba->eba_dmat; 106 107 /* 108 * Search for and attach subdevices. 109 * 110 * Slot 0 is the "motherboard" slot, and the code attaching 111 * the EISA bus should have already attached an ISA bus there. 112 */ 113 maxnslots = eisa_maxslots(ec); 114 for (slot = 1; slot < maxnslots; slot++) { 115 struct eisa_attach_args ea; 116 u_int slotaddr; 117 bus_space_handle_t slotioh; 118 int i; 119 int locs[EISACF_NLOCS]; 120 121 ea.ea_iot = iot; 122 ea.ea_memt = memt; 123 ea.ea_ec = ec; 124 ea.ea_dmat = dmat; 125 ea.ea_slot = slot; 126 slotaddr = EISA_SLOT_ADDR(slot); 127 128 /* 129 * Get a mapping for the whole slot-specific address 130 * space. If we can't, assume nothing's there but warn 131 * about it. 132 */ 133 if (bus_space_map(iot, slotaddr, EISA_SLOT_SIZE, 0, &slotioh)) { 134 aprint_error_dev(self, 135 "can't map I/O space for slot %d\n", slot); 136 continue; 137 } 138 139 /* Get the vendor ID bytes */ 140 for (i = 0; i < EISA_NVIDREGS; i++) 141 ea.ea_vid[i] = bus_space_read_1(iot, slotioh, 142 EISA_SLOTOFF_VID + i); 143 144 /* Check for device existence */ 145 if (EISA_VENDID_NODEV(ea.ea_vid)) { 146 #if 0 147 printf("no device at %s slot %d\n", device_xname(self), 148 slot); 149 printf("\t(0x%x, 0x%x)\n", ea.ea_vid[0], ea.ea_vid[1]); 150 #endif 151 bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE); 152 continue; 153 } 154 155 /* And check that the firmware didn't biff something badly */ 156 if (EISA_VENDID_IDDELAY(ea.ea_vid)) { 157 printf("%s slot %d not configured by BIOS?\n", 158 device_xname(self), slot); 159 bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE); 160 continue; 161 } 162 163 /* Get the product ID bytes */ 164 for (i = 0; i < EISA_NPIDREGS; i++) 165 ea.ea_pid[i] = bus_space_read_1(iot, slotioh, 166 EISA_SLOTOFF_PID + i); 167 168 /* Create the ID string from the vendor and product IDs */ 169 ea.ea_idstring[0] = EISA_VENDID_0(ea.ea_vid); 170 ea.ea_idstring[1] = EISA_VENDID_1(ea.ea_vid); 171 ea.ea_idstring[2] = EISA_VENDID_2(ea.ea_vid); 172 ea.ea_idstring[3] = EISA_PRODID_0(ea.ea_pid); 173 ea.ea_idstring[4] = EISA_PRODID_1(ea.ea_pid); 174 ea.ea_idstring[5] = EISA_PRODID_2(ea.ea_pid); 175 ea.ea_idstring[6] = EISA_PRODID_3(ea.ea_pid); 176 ea.ea_idstring[7] = '\0'; /* sanity */ 177 178 /* We no longer need the I/O handle; free it. */ 179 bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE); 180 181 locs[EISACF_SLOT] = slot; 182 183 /* Attach matching device. */ 184 config_found(self, &ea, eisaprint, 185 CFARGS(.submatch = config_stdsubmatch, 186 .locators = locs)); 187 } 188 } 189 190 int 191 eisa_compatible_match(const struct eisa_attach_args * const ea, 192 const struct device_compatible_entry *dce) 193 { 194 const char *idstring = ea->ea_idstring; 195 196 return device_compatible_pmatch(&idstring, 1, dce); 197 } 198 199 const struct device_compatible_entry * 200 eisa_compatible_lookup(const struct eisa_attach_args * const ea, 201 const struct device_compatible_entry *dce) 202 { 203 const char *idstring = ea->ea_idstring; 204 205 return device_compatible_plookup(&idstring, 1, dce); 206 } 207 208 #ifdef EISAVERBOSE 209 /* 210 * Descriptions of known vendors and devices ("products"). 211 */ 212 struct eisa_knowndev { 213 int flags; 214 const char *id, *name; 215 }; 216 #define EISA_KNOWNDEV_NOPROD 0x01 /* match on vendor only */ 217 218 #include <dev/eisa/eisadevs_data.h> 219 #endif /* EISAVEBSOSE */ 220 221 void 222 eisa_devinfo(const char *id, char *cp, size_t l) 223 { 224 #ifdef EISAVERBOSE 225 const char *name; 226 const struct eisa_knowndev *edp; 227 int match, onlyvendor; 228 229 onlyvendor = 0; 230 name = NULL; 231 232 /* find the device in the table, if possible. */ 233 for (edp = eisa_knowndevs; edp->id != NULL; edp++) { 234 if ((edp->flags & EISA_KNOWNDEV_NOPROD) != 0) 235 match = (strncmp(edp->id, id, 3) == 0); 236 else 237 match = (strcmp(edp->id, id) == 0); 238 if (match) { 239 name = edp->name; 240 onlyvendor = (edp->flags & EISA_KNOWNDEV_NOPROD) != 0; 241 break; 242 } 243 } 244 245 if (name == NULL) 246 snprintf(cp, l, "unknown device %s", id); 247 else if (onlyvendor) 248 snprintf(cp, l, "unknown %s device %s", name, id); 249 else 250 snprintf(cp, l, "%s", name); 251 #else /* EISAVERBOSE */ 252 253 snprintf(cp, l, "device %s", id); 254 #endif /* EISAVERBOSE */ 255 } 256
Indexes created Thu Sep 25 16:09:42 GMT 2025