1 /* $NetBSD: eisa.c,v 1.25 2001/11/13 12:47:33 lukem 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 1.25 2001/11/13 12:47:33 lukem 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 int eisamatch(struct device *, struct cfdata *, void *); 57 void eisaattach(struct device *, struct device *, void *); 58 59 struct cfattach eisa_ca = { 60 sizeof(struct device), eisamatch, eisaattach 61 }; 62 63 int eisasubmatch(struct device *, struct cfdata *, void *); 64 int eisaprint(void *, const char *); 65 void eisa_devinfo(const char *, char *); 66 67 int 68 eisamatch(struct device *parent, struct cfdata *cf, void *aux) 69 { 70 struct eisabus_attach_args *eba = aux; 71 72 if (strcmp(eba->eba_busname, cf->cf_driver->cd_name)) 73 return (0); 74 75 /* XXX check other indicators */ 76 77 return (1); 78 } 79 80 int 81 eisaprint(void *aux, const char *pnp) 82 { 83 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(struct device *parent, struct cfdata *cf, void *aux) 96 { 97 struct eisa_attach_args *ea = aux; 98 99 if (cf->eisacf_slot != EISA_UNKNOWN_SLOT && 100 cf->eisacf_slot != ea->ea_slot) 101 return (0); 102 return ((*cf->cf_attach->ca_match)(parent, cf, aux)); 103 } 104 105 void 106 eisaattach(struct device *parent, struct device *self, void *aux) 107 { 108 struct eisabus_attach_args *eba = aux; 109 bus_space_tag_t iot, memt; 110 bus_dma_tag_t dmat; 111 eisa_chipset_tag_t ec; 112 int slot, maxnslots; 113 114 eisa_attach_hook(parent, self, eba); 115 printf("\n"); 116 117 iot = eba->eba_iot; 118 memt = eba->eba_memt; 119 ec = eba->eba_ec; 120 dmat = eba->eba_dmat; 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 maxnslots = eisa_maxslots(ec); 129 for (slot = 1; slot < maxnslots; slot++) { 130 struct eisa_attach_args ea; 131 u_int slotaddr; 132 bus_space_handle_t slotioh; 133 int i; 134 135 ea.ea_iot = iot; 136 ea.ea_memt = memt; 137 ea.ea_ec = ec; 138 ea.ea_dmat = dmat; 139 ea.ea_slot = slot; 140 slotaddr = EISA_SLOT_ADDR(slot); 141 142 /* 143 * Get a mapping for the whole slot-specific address 144 * space. If we can't, assume nothing's there but warn 145 * about it. 146 */ 147 if (bus_space_map(iot, slotaddr, EISA_SLOT_SIZE, 0, &slotioh)) { 148 printf("%s: can't map I/O space for slot %d\n", 149 self->dv_xname, slot); 150 continue; 151 } 152 153 /* Get the vendor ID bytes */ 154 for (i = 0; i < EISA_NVIDREGS; i++) 155 ea.ea_vid[i] = bus_space_read_1(iot, slotioh, 156 EISA_SLOTOFF_VID + i); 157 158 /* Check for device existence */ 159 if (EISA_VENDID_NODEV(ea.ea_vid)) { 160 #if 0 161 printf("no device at %s slot %d\n", self->dv_xname, 162 slot); 163 printf("\t(0x%x, 0x%x)\n", ea.ea_vid[0], 164 ea.ea_vid[1]); 165 #endif 166 bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE); 167 continue; 168 } 169 170 /* And check that the firmware didn't biff something badly */ 171 if (EISA_VENDID_IDDELAY(ea.ea_vid)) { 172 printf("%s slot %d not configured by BIOS?\n", 173 self->dv_xname, slot); 174 bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE); 175 continue; 176 } 177 178 /* Get the product ID bytes */ 179 for (i = 0; i < EISA_NPIDREGS; i++) 180 ea.ea_pid[i] = bus_space_read_1(iot, slotioh, 181 EISA_SLOTOFF_PID + i); 182 183 /* Create the ID string from the vendor and product IDs */ 184 ea.ea_idstring[0] = EISA_VENDID_0(ea.ea_vid); 185 ea.ea_idstring[1] = EISA_VENDID_1(ea.ea_vid); 186 ea.ea_idstring[2] = EISA_VENDID_2(ea.ea_vid); 187 ea.ea_idstring[3] = EISA_PRODID_0(ea.ea_pid); 188 ea.ea_idstring[4] = EISA_PRODID_1(ea.ea_pid); 189 ea.ea_idstring[5] = EISA_PRODID_2(ea.ea_pid); 190 ea.ea_idstring[6] = EISA_PRODID_3(ea.ea_pid); 191 ea.ea_idstring[7] = '\0'; /* sanity */ 192 193 /* We no longer need the I/O handle; free it. */ 194 bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE); 195 196 /* Attach matching device. */ 197 config_found_sm(self, &ea, eisaprint, eisasubmatch); 198 } 199 } 200 201 #ifdef EISAVERBOSE 202 /* 203 * Descriptions of of known vendors and devices ("products"). 204 */ 205 struct eisa_knowndev { 206 int flags; 207 const char *id, *name; 208 }; 209 #define EISA_KNOWNDEV_NOPROD 0x01 /* match on vendor only */ 210 211 #include <dev/eisa/eisadevs_data.h> 212 #endif /* EISAVEBSOSE */ 213 214 void 215 eisa_devinfo(const char *id, char *cp) 216 { 217 #ifdef EISAVERBOSE 218 const char *name; 219 const struct eisa_knowndev *edp; 220 int match, onlyvendor; 221 222 onlyvendor = 0; 223 name = NULL; 224 225 /* find the device in the table, if possible. */ 226 for (edp = eisa_knowndevs; edp->id != NULL; edp++) { 227 if ((edp->flags & EISA_KNOWNDEV_NOPROD) != 0) 228 match = (strncmp(edp->id, id, 3) == 0); 229 else 230 match = (strcmp(edp->id, id) == 0); 231 if (match) { 232 name = edp->name; 233 onlyvendor = (edp->flags & EISA_KNOWNDEV_NOPROD) != 0; 234 break; 235 } 236 } 237 238 if (name == NULL) 239 sprintf(cp, "unknown device %s", id); 240 else if (onlyvendor) 241 sprintf(cp, "unknown %s device %s", name, id); 242 else 243 sprintf(cp, "%s", name); 244 #else /* EISAVERBOSE */ 245 246 sprintf(cp, "device %s", id); 247 #endif /* EISAVERBOSE */ 248 } 249