eisaconf.c revision 46743
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 1.42 1999/05/06 22:17:26 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 1, 136}; 137 138static devclass_t mainboard_devclass; 139 140DRIVER_MODULE(mainboard, eisa, mainboard_driver, mainboard_devclass, 0, 0); 141 142/* 143** probe for EISA devices 144*/ 145static int 146eisa_probe(device_t dev) 147{ 148 int i,slot; 149 struct eisa_device *e_dev; 150 int eisaBase = 0xc80; 151 eisa_id_t eisa_id; 152 153 device_set_desc(dev, "EISA bus"); 154 155 for (slot = 0; slot < num_eisa_slots; eisaBase+=0x1000, slot++) { 156 int id_size = sizeof(eisa_id); 157 eisa_id = 0; 158 for( i = 0; i < id_size; i++ ) { 159 outb(eisaBase,0x80 + i); /*Some cards require priming*/ 160 eisa_id |= inb(eisaBase+i) << ((id_size-i-1)*CHAR_BIT); 161 } 162 if (eisa_id & 0x80000000) 163 continue; /* no EISA card in slot */ 164 165 /* Prepare an eisa_device_node for this slot */ 166 e_dev = (struct eisa_device *)malloc(sizeof(*e_dev), 167 M_DEVBUF, M_NOWAIT); 168 if (!e_dev) { 169 device_printf(dev, "cannot malloc eisa_device"); 170 break; /* Try to attach what we have already */ 171 } 172 bzero(e_dev, sizeof(*e_dev)); 173 174 e_dev->id = eisa_id; 175 176 e_dev->ioconf.slot = slot; 177 178 /* Initialize our lists of reserved addresses */ 179 LIST_INIT(&(e_dev->ioconf.ioaddrs)); 180 LIST_INIT(&(e_dev->ioconf.maddrs)); 181 TAILQ_INIT(&(e_dev->ioconf.irqs)); 182 183 device_add_child(dev, NULL, -1, e_dev); 184 } 185 186 return 0; 187} 188 189static void 190eisa_print_child(device_t dev, device_t child) 191{ 192 /* XXX print resource descriptions? */ 193 printf(" at slot %d", eisa_get_slot(child)); 194 printf(" on %s", device_get_nameunit(dev)); 195} 196 197static int 198eisa_find_irq(struct eisa_device *e_dev, int rid) 199{ 200 int i; 201 struct irq_node *irq; 202 203 for (i = 0, irq = TAILQ_FIRST(&e_dev->ioconf.irqs); 204 i < rid && irq; 205 i++, irq = TAILQ_NEXT(irq, links)) 206 ; 207 208 if (irq) 209 return irq->irq_no; 210 else 211 return -1; 212} 213 214static struct resvaddr * 215eisa_find_maddr(struct eisa_device *e_dev, int rid) 216{ 217 int i; 218 struct resvaddr *resv; 219 220 for (i = 0, resv = LIST_FIRST(&e_dev->ioconf.maddrs); 221 i < rid && resv; 222 i++, resv = LIST_NEXT(resv, links)) 223 ; 224 225 return resv; 226} 227 228static struct resvaddr * 229eisa_find_ioaddr(struct eisa_device *e_dev, int rid) 230{ 231 int i; 232 struct resvaddr *resv; 233 234 for (i = 0, resv = LIST_FIRST(&e_dev->ioconf.ioaddrs); 235 i < rid && resv; 236 i++, resv = LIST_NEXT(resv, links)) 237 ; 238 239 return resv; 240} 241 242static int 243eisa_read_ivar(device_t dev, device_t child, int which, u_long *result) 244{ 245 struct eisa_device *e_dev = device_get_ivars(child); 246 247 switch (which) { 248 case EISA_IVAR_SLOT: 249 *result = e_dev->ioconf.slot; 250 break; 251 252 case EISA_IVAR_ID: 253 *result = e_dev->id; 254 break; 255 256 case EISA_IVAR_IRQ: 257 /* XXX only first irq */ 258 *result = eisa_find_irq(e_dev, 0); 259 break; 260 261 default: 262 return (ENOENT); 263 } 264 265 return (0); 266} 267 268static int 269eisa_write_ivar(device_t dev, device_t child, int which, uintptr_t value) 270{ 271 return (EINVAL); 272} 273 274static struct resource * 275eisa_alloc_resource(device_t dev, device_t child, int type, int *rid, 276 u_long start, u_long end, u_long count, u_int flags) 277{ 278 int isdefault; 279 struct eisa_device *e_dev = device_get_ivars(child); 280 struct resource *rv, **rvp = 0; 281 282 isdefault = (device_get_parent(child) == dev 283 && start == 0UL && end == ~0UL && count == 1); 284 285 switch (type) { 286 case SYS_RES_IRQ: 287 if (isdefault) { 288 int irq = eisa_find_irq(e_dev, *rid); 289 if (irq == -1) 290 return 0; 291 start = end = irq; 292 count = 1; 293 } 294 break; 295 296 case SYS_RES_MEMORY: 297 if (isdefault) { 298 struct resvaddr *resv; 299 300 resv = eisa_find_maddr(e_dev, *rid); 301 if (!resv) 302 return 0; 303 304 start = resv->addr; 305 end = resv->size - 1; 306 count = resv->size; 307 rvp = &resv->res; 308 } 309 break; 310 311 case SYS_RES_IOPORT: 312 if (isdefault) { 313 struct resvaddr *resv; 314 315 resv = eisa_find_ioaddr(e_dev, *rid); 316 if (!resv) 317 return 0; 318 319 start = resv->addr; 320 end = resv->size - 1; 321 count = resv->size; 322 rvp = &resv->res; 323 } 324 break; 325 326 default: 327 return 0; 328 } 329 330 rv = BUS_ALLOC_RESOURCE(device_get_parent(dev), child, 331 type, rid, start, end, count, flags); 332 if (rvp) 333 *rvp = rv; 334 335 return rv; 336} 337 338static int 339eisa_release_resource(device_t dev, device_t child, int type, int rid, 340 struct resource *r) 341{ 342 int rv; 343 struct eisa_device *e_dev = device_get_ivars(child); 344 struct resvaddr *resv = 0; 345 346 switch (type) { 347 case SYS_RES_IRQ: 348 if (eisa_find_irq(e_dev, rid) == -1) 349 return EINVAL; 350 break; 351 352 case SYS_RES_MEMORY: 353 if (device_get_parent(child) == dev) 354 resv = eisa_find_maddr(e_dev, rid); 355 break; 356 357 358 case SYS_RES_IOPORT: 359 if (device_get_parent(child) == dev) 360 resv = eisa_find_ioaddr(e_dev, rid); 361 break; 362 363 default: 364 return (ENOENT); 365 } 366 367 rv = BUS_RELEASE_RESOURCE(device_get_parent(dev), child, type, rid, r); 368 369 if (rv == 0) { 370 if (resv) 371 resv->res = 0; 372 } 373 374 return rv; 375} 376 377int 378eisa_add_intr(device_t dev, int irq) 379{ 380 struct eisa_device *e_dev = device_get_ivars(dev); 381 struct irq_node *irq_info; 382 383 irq_info = (struct irq_node *)malloc(sizeof(*irq_info), M_DEVBUF, 384 M_NOWAIT); 385 if (irq_info == NULL) 386 return (1); 387 388 irq_info->irq_no = irq; 389 irq_info->idesc = NULL; 390 TAILQ_INSERT_TAIL(&e_dev->ioconf.irqs, irq_info, links); 391 return 0; 392} 393 394static int 395eisa_add_resvaddr(struct eisa_device *e_dev, struct resvlist *head, u_long base, 396 u_long size, int flags) 397{ 398 resvaddr_t *reservation; 399 400 reservation = (resvaddr_t *)malloc(sizeof(resvaddr_t), 401 M_DEVBUF, M_NOWAIT); 402 if(!reservation) 403 return (ENOMEM); 404 405 reservation->addr = base; 406 reservation->size = size; 407 reservation->flags = flags; 408 409 if (!head->lh_first) { 410 LIST_INSERT_HEAD(head, reservation, links); 411 } 412 else { 413 resvaddr_t *node; 414 for(node = head->lh_first; node; node = node->links.le_next) { 415 if (node->addr > reservation->addr) { 416 /* 417 * List is sorted in increasing 418 * address order. 419 */ 420 LIST_INSERT_BEFORE(node, reservation, links); 421 break; 422 } 423 424 if (node->addr == reservation->addr) { 425 /* 426 * If the entry we want to add 427 * matches any already in here, 428 * fail. 429 */ 430 free(reservation, M_DEVBUF); 431 return (EEXIST); 432 } 433 434 if (!node->links.le_next) { 435 LIST_INSERT_AFTER(node, reservation, links); 436 break; 437 } 438 } 439 } 440 return (0); 441} 442 443int 444eisa_add_mspace(device_t dev, u_long mbase, u_long msize, int flags) 445{ 446 struct eisa_device *e_dev = device_get_ivars(dev); 447 448 return eisa_add_resvaddr(e_dev, &(e_dev->ioconf.maddrs), mbase, msize, 449 flags); 450} 451 452int 453eisa_add_iospace(device_t dev, u_long iobase, u_long iosize, int flags) 454{ 455 struct eisa_device *e_dev = device_get_ivars(dev); 456 457 return eisa_add_resvaddr(e_dev, &(e_dev->ioconf.ioaddrs), iobase, 458 iosize, flags); 459} 460 461static device_method_t eisa_methods[] = { 462 /* Device interface */ 463 DEVMETHOD(device_probe, eisa_probe), 464 DEVMETHOD(device_attach, bus_generic_attach), 465 DEVMETHOD(device_shutdown, bus_generic_shutdown), 466 467 /* Bus interface */ 468 DEVMETHOD(bus_print_child, eisa_print_child), 469 DEVMETHOD(bus_read_ivar, eisa_read_ivar), 470 DEVMETHOD(bus_write_ivar, eisa_write_ivar), 471 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 472 DEVMETHOD(bus_alloc_resource, eisa_alloc_resource), 473 DEVMETHOD(bus_release_resource, eisa_release_resource), 474 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 475 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 476 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 477 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 478 479 { 0, 0 } 480}; 481 482static driver_t eisa_driver = { 483 "eisa", 484 eisa_methods, 485 1, /* no softc */ 486}; 487 488DRIVER_MODULE(eisa, isab, eisa_driver, eisa_devclass, 0, 0); 489DRIVER_MODULE(eisa, nexus, eisa_driver, eisa_devclass, 0, 0); 490