eisaconf.c revision 46601
1/* 2 * EISA bus probe and attach routines 3 * 4 * Copyright (c) 1995, 1996 Justin T. Gibbs. 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 immediately at the beginning of the file, without modification, 12 * this list of conditions, and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $Id: eisaconf.c,v 1.41 1999/04/19 13:34:25 peter Exp $ 32 */ 33 34#include "opt_eisa.h" 35 36#include <sys/param.h> 37#include <sys/systm.h> 38#include <sys/queue.h> 39#include <sys/malloc.h> 40#include <sys/kernel.h> 41#include <sys/module.h> 42#include <sys/bus.h> 43 44#include <machine/limits.h> 45#include <machine/bus.h> 46#include <machine/resource.h> 47#include <sys/rman.h> 48 49#include <i386/eisa/eisaconf.h> 50 51#include <sys/interrupt.h> 52 53typedef struct resvaddr { 54 u_long addr; /* start address */ 55 u_long size; /* size of reserved area */ 56 int flags; 57 struct resource *res; /* resource manager handle */ 58 LIST_ENTRY(resvaddr) links; /* List links */ 59} resvaddr_t; 60 61LIST_HEAD(resvlist, resvaddr); 62 63struct irq_node { 64 int irq_no; 65 void *idesc; 66 TAILQ_ENTRY(irq_node) links; 67}; 68 69TAILQ_HEAD(irqlist, irq_node); 70 71struct eisa_ioconf { 72 int slot; 73 struct resvlist ioaddrs; /* list of reserved I/O ranges */ 74 struct resvlist maddrs; /* list of reserved memory ranges */ 75 struct irqlist irqs; /* list of reserved irqs */ 76}; 77 78/* To be replaced by the "super device" generic device structure... */ 79struct eisa_device { 80 eisa_id_t id; 81 struct eisa_ioconf ioconf; 82}; 83 84 85/* Global variable, so UserConfig can change it. */ 86#ifndef EISA_SLOTS 87#define EISA_SLOTS 10 /* PCI clashes with higher ones.. fix later */ 88#endif 89int num_eisa_slots = EISA_SLOTS; 90 91static devclass_t eisa_devclass; 92 93static int 94mainboard_probe(device_t dev) 95{ 96 char *idstring; 97 eisa_id_t id = eisa_get_id(dev); 98 99 if (eisa_get_slot(dev) != 0) 100 return (ENXIO); 101 102 idstring = (char *)malloc(8 + sizeof(" (System Board)") + 1, 103 M_DEVBUF, M_NOWAIT); 104 if (idstring == NULL) { 105 panic("Eisa probe unable to malloc"); 106 } 107 sprintf(idstring, "%c%c%c%x%x (System Board)", 108 EISA_MFCTR_CHAR0(id), 109 EISA_MFCTR_CHAR1(id), 110 EISA_MFCTR_CHAR2(id), 111 EISA_PRODUCT_ID(id), 112 EISA_REVISION_ID(id)); 113 device_set_desc(dev, idstring); 114 115 return (0); 116} 117 118static int 119mainboard_attach(device_t dev) 120{ 121 return (0); 122} 123 124static device_method_t mainboard_methods[] = { 125 /* Device interface */ 126 DEVMETHOD(device_probe, mainboard_probe), 127 DEVMETHOD(device_attach, mainboard_attach), 128 129 { 0, 0 } 130}; 131 132static driver_t mainboard_driver = { 133 "mainboard", 134 mainboard_methods, 135 DRIVER_TYPE_MISC, 136 1, 137}; 138 139static devclass_t mainboard_devclass; 140 141DRIVER_MODULE(mainboard, eisa, mainboard_driver, mainboard_devclass, 0, 0); 142 143/* 144** probe for EISA devices 145*/ 146static int 147eisa_probe(device_t dev) 148{ 149 int i,slot; 150 struct eisa_device *e_dev; 151 int eisaBase = 0xc80; 152 eisa_id_t eisa_id; 153 154 device_set_desc(dev, "EISA bus"); 155 156 for (slot = 0; slot < num_eisa_slots; eisaBase+=0x1000, slot++) { 157 int id_size = sizeof(eisa_id); 158 eisa_id = 0; 159 for( i = 0; i < id_size; i++ ) { 160 outb(eisaBase,0x80 + i); /*Some cards require priming*/ 161 eisa_id |= inb(eisaBase+i) << ((id_size-i-1)*CHAR_BIT); 162 } 163 if (eisa_id & 0x80000000) 164 continue; /* no EISA card in slot */ 165 166 /* Prepare an eisa_device_node for this slot */ 167 e_dev = (struct eisa_device *)malloc(sizeof(*e_dev), 168 M_DEVBUF, M_NOWAIT); 169 if (!e_dev) { 170 device_printf(dev, "cannot malloc eisa_device"); 171 break; /* Try to attach what we have already */ 172 } 173 bzero(e_dev, sizeof(*e_dev)); 174 175 e_dev->id = eisa_id; 176 177 e_dev->ioconf.slot = slot; 178 179 /* Initialize our lists of reserved addresses */ 180 LIST_INIT(&(e_dev->ioconf.ioaddrs)); 181 LIST_INIT(&(e_dev->ioconf.maddrs)); 182 TAILQ_INIT(&(e_dev->ioconf.irqs)); 183 184 device_add_child(dev, NULL, -1, e_dev); 185 } 186 187 return 0; 188} 189 190static void 191eisa_print_child(device_t dev, device_t child) 192{ 193 /* XXX print resource descriptions? */ 194 printf(" at slot %d", eisa_get_slot(child)); 195 printf(" on %s", device_get_nameunit(dev)); 196} 197 198static int 199eisa_find_irq(struct eisa_device *e_dev, int rid) 200{ 201 int i; 202 struct irq_node *irq; 203 204 for (i = 0, irq = TAILQ_FIRST(&e_dev->ioconf.irqs); 205 i < rid && irq; 206 i++, irq = TAILQ_NEXT(irq, links)) 207 ; 208 209 if (irq) 210 return irq->irq_no; 211 else 212 return -1; 213} 214 215static struct resvaddr * 216eisa_find_maddr(struct eisa_device *e_dev, int rid) 217{ 218 int i; 219 struct resvaddr *resv; 220 221 for (i = 0, resv = LIST_FIRST(&e_dev->ioconf.maddrs); 222 i < rid && resv; 223 i++, resv = LIST_NEXT(resv, links)) 224 ; 225 226 return resv; 227} 228 229static struct resvaddr * 230eisa_find_ioaddr(struct eisa_device *e_dev, int rid) 231{ 232 int i; 233 struct resvaddr *resv; 234 235 for (i = 0, resv = LIST_FIRST(&e_dev->ioconf.ioaddrs); 236 i < rid && resv; 237 i++, resv = LIST_NEXT(resv, links)) 238 ; 239 240 return resv; 241} 242 243static int 244eisa_read_ivar(device_t dev, device_t child, int which, u_long *result) 245{ 246 struct eisa_device *e_dev = device_get_ivars(child); 247 248 switch (which) { 249 case EISA_IVAR_SLOT: 250 *result = e_dev->ioconf.slot; 251 break; 252 253 case EISA_IVAR_ID: 254 *result = e_dev->id; 255 break; 256 257 case EISA_IVAR_IRQ: 258 /* XXX only first irq */ 259 *result = eisa_find_irq(e_dev, 0); 260 break; 261 262 default: 263 return (ENOENT); 264 } 265 266 return (0); 267} 268 269static int 270eisa_write_ivar(device_t dev, device_t child, int which, uintptr_t value) 271{ 272 return (EINVAL); 273} 274 275static struct resource * 276eisa_alloc_resource(device_t dev, device_t child, int type, int *rid, 277 u_long start, u_long end, u_long count, u_int flags) 278{ 279 int isdefault; 280 struct eisa_device *e_dev = device_get_ivars(child); 281 struct resource *rv, **rvp = 0; 282 283 isdefault = (device_get_parent(child) == dev 284 && start == 0UL && end == ~0UL && count == 1); 285 286 switch (type) { 287 case SYS_RES_IRQ: 288 if (isdefault) { 289 int irq = eisa_find_irq(e_dev, *rid); 290 if (irq == -1) 291 return 0; 292 start = end = irq; 293 count = 1; 294 } 295 break; 296 297 case SYS_RES_MEMORY: 298 if (isdefault) { 299 struct resvaddr *resv; 300 301 resv = eisa_find_maddr(e_dev, *rid); 302 if (!resv) 303 return 0; 304 305 start = resv->addr; 306 end = resv->size - 1; 307 count = resv->size; 308 rvp = &resv->res; 309 } 310 break; 311 312 case SYS_RES_IOPORT: 313 if (isdefault) { 314 struct resvaddr *resv; 315 316 resv = eisa_find_ioaddr(e_dev, *rid); 317 if (!resv) 318 return 0; 319 320 start = resv->addr; 321 end = resv->size - 1; 322 count = resv->size; 323 rvp = &resv->res; 324 } 325 break; 326 327 default: 328 return 0; 329 } 330 331 rv = BUS_ALLOC_RESOURCE(device_get_parent(dev), child, 332 type, rid, start, end, count, flags); 333 if (rvp) 334 *rvp = rv; 335 336 return rv; 337} 338 339static int 340eisa_release_resource(device_t dev, device_t child, int type, int rid, 341 struct resource *r) 342{ 343 int rv; 344 struct eisa_device *e_dev = device_get_ivars(child); 345 struct resvaddr *resv = 0; 346 347 switch (type) { 348 case SYS_RES_IRQ: 349 if (eisa_find_irq(e_dev, rid) == -1) 350 return EINVAL; 351 break; 352 353 case SYS_RES_MEMORY: 354 if (device_get_parent(child) == dev) 355 resv = eisa_find_maddr(e_dev, rid); 356 break; 357 358 359 case SYS_RES_IOPORT: 360 if (device_get_parent(child) == dev) 361 resv = eisa_find_ioaddr(e_dev, rid); 362 break; 363 364 default: 365 return (ENOENT); 366 } 367 368 rv = BUS_RELEASE_RESOURCE(device_get_parent(dev), child, type, rid, r); 369 370 if (rv == 0) { 371 if (resv) 372 resv->res = 0; 373 } 374 375 return rv; 376} 377 378int 379eisa_add_intr(device_t dev, int irq) 380{ 381 struct eisa_device *e_dev = device_get_ivars(dev); 382 struct irq_node *irq_info; 383 384 irq_info = (struct irq_node *)malloc(sizeof(*irq_info), M_DEVBUF, 385 M_NOWAIT); 386 if (irq_info == NULL) 387 return (1); 388 389 irq_info->irq_no = irq; 390 irq_info->idesc = NULL; 391 TAILQ_INSERT_TAIL(&e_dev->ioconf.irqs, irq_info, links); 392 return 0; 393} 394 395static int 396eisa_add_resvaddr(struct eisa_device *e_dev, struct resvlist *head, u_long base, 397 u_long size, int flags) 398{ 399 resvaddr_t *reservation; 400 401 reservation = (resvaddr_t *)malloc(sizeof(resvaddr_t), 402 M_DEVBUF, M_NOWAIT); 403 if(!reservation) 404 return (ENOMEM); 405 406 reservation->addr = base; 407 reservation->size = size; 408 reservation->flags = flags; 409 410 if (!head->lh_first) { 411 LIST_INSERT_HEAD(head, reservation, links); 412 } 413 else { 414 resvaddr_t *node; 415 for(node = head->lh_first; node; node = node->links.le_next) { 416 if (node->addr > reservation->addr) { 417 /* 418 * List is sorted in increasing 419 * address order. 420 */ 421 LIST_INSERT_BEFORE(node, reservation, links); 422 break; 423 } 424 425 if (node->addr == reservation->addr) { 426 /* 427 * If the entry we want to add 428 * matches any already in here, 429 * fail. 430 */ 431 free(reservation, M_DEVBUF); 432 return (EEXIST); 433 } 434 435 if (!node->links.le_next) { 436 LIST_INSERT_AFTER(node, reservation, links); 437 break; 438 } 439 } 440 } 441 return (0); 442} 443 444int 445eisa_add_mspace(device_t dev, u_long mbase, u_long msize, int flags) 446{ 447 struct eisa_device *e_dev = device_get_ivars(dev); 448 449 return eisa_add_resvaddr(e_dev, &(e_dev->ioconf.maddrs), mbase, msize, 450 flags); 451} 452 453int 454eisa_add_iospace(device_t dev, u_long iobase, u_long iosize, int flags) 455{ 456 struct eisa_device *e_dev = device_get_ivars(dev); 457 458 return eisa_add_resvaddr(e_dev, &(e_dev->ioconf.ioaddrs), iobase, 459 iosize, flags); 460} 461 462static device_method_t eisa_methods[] = { 463 /* Device interface */ 464 DEVMETHOD(device_probe, eisa_probe), 465 DEVMETHOD(device_attach, bus_generic_attach), 466 DEVMETHOD(device_shutdown, bus_generic_shutdown), 467 468 /* Bus interface */ 469 DEVMETHOD(bus_print_child, eisa_print_child), 470 DEVMETHOD(bus_read_ivar, eisa_read_ivar), 471 DEVMETHOD(bus_write_ivar, eisa_write_ivar), 472 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 473 DEVMETHOD(bus_alloc_resource, eisa_alloc_resource), 474 DEVMETHOD(bus_release_resource, eisa_release_resource), 475 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 476 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 477 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 478 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 479 480 { 0, 0 } 481}; 482 483static driver_t eisa_driver = { 484 "eisa", 485 eisa_methods, 486 DRIVER_TYPE_MISC, 487 1, /* no softc */ 488}; 489 490DRIVER_MODULE(eisa, isab, eisa_driver, eisa_devclass, 0, 0); 491DRIVER_MODULE(eisa, nexus, eisa_driver, eisa_devclass, 0, 0); 492