eisaconf.c revision 18158
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 1.22 1996/09/06 23:06:57 phk Exp $ 32 */ 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/kernel.h> 36#include <sys/sysctl.h> 37#include <sys/conf.h> 38#include <sys/malloc.h> 39 40#include <i386/eisa/eisaconf.h> 41 42#include <i386/isa/icu.h> /* Hmmm. Interrupt stuff? */ 43 44struct eisa_device_node{ 45 struct eisa_device dev; 46 struct eisa_device_node *next; 47}; 48 49/* 50 * This should probably be a list of "struct device" once it exists. 51 * A struct device will incorperate ioconf and driver entry point data 52 * regardless of how its attached to the system (via unions) as well 53 * as more generic information that all device types should support (unit 54 * number, if its installed, etc). 55 */ 56static struct eisa_device_node *eisa_dev_list; 57static struct eisa_device_node **eisa_dev_list_tail = &eisa_dev_list; 58static u_long eisa_unit; 59 60static struct eisa_driver mainboard_drv = { 61 "eisa", 62 NULL, 63 NULL, 64 NULL, 65 &eisa_unit 66 }; 67 68/* 69 * Add the mainboard_drv to the eisa driver linkerset so that it is 70 * defined even if no EISA drivers are linked into the kernel. 71 */ 72DATA_SET (eisadriver_set, mainboard_drv); 73 74/* 75 * Local function declarations and static variables 76 */ 77void eisa_reg_print __P((struct eisa_device *e_dev, char *string, 78 char *separator)); 79static int eisa_add_resvaddr __P((struct eisa_device *e_dev, 80 struct resvlist *head, u_long base, 81 u_long size, int flags)); 82static int eisa_reg_resvaddr __P((struct eisa_device *e_dev, 83 struct resvlist *head, resvaddr_t *resvaddr, 84 int *reg_count)); 85 86/* 87 * Keep some state about what we've printed so far 88 * to make probe output pretty. 89 */ 90static struct { 91 int in_registration;/* reg_start has been called */ 92 int num_interrupts; 93 int num_ioaddrs; 94 int num_maddrs; 95 int column; /* How much we have output so far. */ 96#define MAX_COL 80 97} reg_state; 98 99/* 100** probe for EISA devices 101*/ 102void 103eisa_configure() 104{ 105 int i,slot; 106 char *id_string; 107 struct eisa_device_node *dev_node; 108 struct eisa_driver **e_drvp; 109 struct eisa_driver *e_drv; 110 struct eisa_device *e_dev; 111 int eisaBase = 0xc80; 112 eisa_id_t eisa_id; 113 114 e_drvp = (struct eisa_driver**)eisadriver_set.ls_items; 115 116 for (slot = 0; slot < EISA_SLOTS; eisaBase+=0x1000, slot++) { 117 int id_size = sizeof(eisa_id); 118 eisa_id = 0; 119 for( i = 0; i < id_size; i++ ) { 120 outb(eisaBase,0x80 + i); /*Some cards require priming*/ 121 eisa_id |= inb(eisaBase+i) << ((id_size-i-1)*CHAR_BIT); 122 } 123 if (eisa_id & 0x80000000) 124 continue; /* no EISA card in slot */ 125 126 /* Prepare an eisa_device_node for this slot */ 127 dev_node = (struct eisa_device_node *)malloc(sizeof(*dev_node), 128 M_DEVBUF, M_NOWAIT); 129 if (!dev_node) { 130 printf("eisa0: cannot malloc eisa_device_node"); 131 break; /* Try to attach what we have already */ 132 } 133 bzero(dev_node, sizeof(*dev_node)); 134 e_dev = &(dev_node->dev); 135 136 e_dev->id = eisa_id; 137 /* 138 * Add an EISA ID based descriptive name incase we don't 139 * have a driver for it. We do this now instead of after all 140 * probes because in the future, the eisa module will only 141 * be responsible for creating the list of devices in the system 142 * for the configuration manager to use. 143 */ 144 e_dev->full_name = (char *)malloc(8*sizeof(char), 145 M_DEVBUF, M_NOWAIT); 146 if (!e_dev->full_name) { 147 panic("Eisa probe unable to malloc"); 148 } 149 sprintf(e_dev->full_name, "%c%c%c%x%x", 150 EISA_MFCTR_CHAR0(e_dev->id), 151 EISA_MFCTR_CHAR1(e_dev->id), 152 EISA_MFCTR_CHAR2(e_dev->id), 153 EISA_PRODUCT_ID(e_dev->id), 154 EISA_REVISION_ID(e_dev->id)); 155 156 e_dev->ioconf.slot = slot; 157 158 /* Initialize our lists of reserved addresses */ 159 LIST_INIT(&(e_dev->ioconf.ioaddrs)); 160 LIST_INIT(&(e_dev->ioconf.maddrs)); 161 162 *eisa_dev_list_tail = dev_node; 163 eisa_dev_list_tail = &dev_node->next; 164 } 165 166 dev_node = eisa_dev_list; 167 168 /* 169 * "Attach" the system board 170 */ 171 172 /* The first will be the motherboard in a true EISA system */ 173 if (dev_node && (dev_node->dev.ioconf.slot == 0)) { 174 e_dev = &dev_node->dev; 175 e_dev->driver = &mainboard_drv; 176 e_dev->unit = (*e_dev->driver->unit)++; 177 id_string = e_dev->full_name; 178 e_dev->full_name = (char *)malloc(strlen(e_dev->full_name) 179 + sizeof(" (System Board)") 180 + 1, M_DEVBUF, M_NOWAIT); 181 if (!e_dev->full_name) { 182 panic("Eisa probe unable to malloc"); 183 } 184 sprintf(e_dev->full_name, "%s (System Board)", id_string); 185 free(id_string, M_DEVBUF); 186 187 printf("%s%ld: <%s>\n", 188 e_dev->driver->name, 189 e_dev->unit, 190 e_dev->full_name); 191 192 /* Should set the iosize, but I don't have a spec handy */ 193 printf("Probing for devices on the EISA bus\n"); 194 dev_node = dev_node->next; 195 } 196 197 if (!eisa_dev_list) { 198 /* 199 * No devices. 200 */ 201 return; 202 } 203 /* 204 * See what devices we recognize. 205 */ 206 while((e_drv = *e_drvp++)) { 207 if (e_drv->probe) 208 (*e_drv->probe)(); 209 } 210 211 /* 212 * Attach the devices we found in slot order 213 */ 214 for (; dev_node; dev_node=dev_node->next) { 215 e_dev = &dev_node->dev; 216 e_drv = e_dev->driver; 217 218 if (e_drv) { 219 /* 220 * Determine the proper unit number for this device. 221 * Here we should look in the device table generated 222 * by config to see if this type of device is enabled 223 * either generically or for this particular address 224 * as well as determine if a reserved unit number 225 * should be used. We should also ensure that the 226 * "next availible unit number" skips over "wired" unit 227 * numbers. This will be done after config is fixed or 228 * some other configuration method is chosen. 229 */ 230 e_dev->unit = (*e_drv->unit)++; 231 if ((*e_drv->attach)(e_dev) < 0) { 232 /* Ensure registration has ended */ 233 reg_state.in_registration = 0; 234 printf("\n%s0:%d <%s> attach failed\n", 235 mainboard_drv.name, 236 e_dev->ioconf.slot, 237 e_dev->full_name); 238 continue; 239 } 240 /* Ensure registration has ended */ 241 reg_state.in_registration = 0; 242 } 243 else { 244 /* Announce unattached device */ 245 printf("%s0:%d <%s=0x%x> unknown device\n", 246 mainboard_drv.name, 247 e_dev->ioconf.slot, 248 e_dev->full_name, 249 e_dev->id); 250 } 251 } 252} 253 254struct eisa_device * 255eisa_match_dev(e_dev, match_func) 256 struct eisa_device *e_dev; 257 char* (*match_func)(eisa_id_t); 258{ 259 struct eisa_device_node *e_node = eisa_dev_list; 260 261 if (e_dev) { 262 /* Start our search from the last successful match */ 263 e_node = ((struct eisa_device_node *)e_dev)->next; 264 } 265 266 for(; e_node; e_node = e_node->next) { 267 char *result; 268 if (e_node->dev.driver) { 269 /* Already claimed */ 270 continue; 271 } 272 result = (*match_func)(e_node->dev.id); 273 if (result) { 274 free(e_node->dev.full_name, M_DEVBUF); 275 e_node->dev.full_name = result; 276 return (&(e_node->dev)); 277 } 278 } 279 return NULL; 280} 281 282/* Interrupt and I/O space registration facitlities */ 283void 284eisa_reg_start(e_dev) 285 struct eisa_device *e_dev; 286{ 287 /* 288 * Announce the device. 289 */ 290 char *string; 291 292 reg_state.in_registration = 1; 293 reg_state.num_interrupts = 0; 294 reg_state.num_ioaddrs = 0; 295 reg_state.num_maddrs = 0; 296 reg_state.column = 0; 297 298 string = malloc(strlen(e_dev->full_name) + sizeof(" <>") + /*NULL*/1, 299 M_TEMP, M_NOWAIT); 300 if(!string) { 301 printf("eisa0: cannot malloc device description string\n"); 302 return; 303 } 304 sprintf(string, " <%s>", e_dev->full_name); 305 eisa_reg_print(e_dev, string, /*separator=*/NULL); 306 free(string, M_TEMP); 307} 308 309/* 310 * Output registration information mindfull of screen wrap. 311 * Output an optional character separator before the string 312 * if the line does not wrap. 313 */ 314void 315eisa_reg_print(e_dev, string, separator) 316 struct eisa_device *e_dev; 317 char *string; 318 char *separator; 319{ 320 int len = strlen(string); 321 322 if(separator) 323 len++; 324 325 if(reg_state.column + len > MAX_COL) { 326 printf("\n"); 327 reg_state.column = 0; 328 } 329 else if(separator) { 330 printf("%c", *separator); 331 reg_state.column++; 332 } 333 334 if(reg_state.column == 0) 335 reg_state.column += printf("%s%ld:%s", 336 e_dev->driver->name, 337 e_dev->unit, 338 string); 339 else 340 reg_state.column += printf("%s", string); 341} 342 343/* Interrupt and I/O space registration facitlities */ 344void 345eisa_reg_end(e_dev) 346 struct eisa_device *e_dev; 347{ 348 if( reg_state.in_registration ) 349 { 350 char string[25]; 351 352 sprintf(string, " on %s0 slot %d", 353 mainboard_drv.name, 354 e_dev->ioconf.slot); 355 eisa_reg_print(e_dev, string, NULL); 356 printf("\n"); 357 reg_state.in_registration = 0; 358 } 359 else 360 printf("eisa_reg_end called outside of a " 361 "registration session\n"); 362} 363 364int 365eisa_add_intr(e_dev, irq) 366 struct eisa_device *e_dev; 367 int irq; 368{ 369 e_dev->ioconf.irq |= 1ul << irq; 370 return 0; 371} 372 373int 374eisa_reg_intr(e_dev, irq, func, arg, maskptr, shared) 375 struct eisa_device *e_dev; 376 int irq; 377 void (*func)(void *); 378 void *arg; 379 u_int *maskptr; 380 int shared; 381{ 382 int result; 383 int s; 384 char string[25]; 385 char separator = ','; 386 387#if NOT_YET 388 /* 389 * Punt on conflict detection for the moment. 390 * I want to develop a generic routine to do 391 * this for all device types. 392 */ 393 int checkthese = CC_IRQ; 394 if (haveseen_dev(dev, checkthese)) 395 return 1; 396#endif 397 if (reg_state.in_registration) { 398 s = splhigh(); 399 /* 400 * This should really go to a routine that can optionally 401 * handle shared interrupts. 402 */ 403 result = register_intr(irq, /* isa irq */ 404 0, /* deviced?? */ 405 0, /* flags? */ 406 (inthand2_t*) func, /* handler */ 407 maskptr, /* mask pointer */ 408 (int)arg); /* handler arg */ 409 410 if (result) { 411 printf ("\neisa_reg_int: result=%d\n", result); 412 splx(s); 413 return (result); 414 }; 415 update_intr_masks(); 416 splx(s); 417 } 418 else 419 return EPERM; 420 421 e_dev->ioconf.irq |= 1ul << irq; 422 sprintf(string, " irq %d", irq); 423 eisa_reg_print(e_dev, string, reg_state.num_interrupts ? 424 &separator : NULL); 425 reg_state.num_interrupts++; 426 return (0); 427} 428 429int 430eisa_release_intr(e_dev, irq, func) 431 struct eisa_device *e_dev; 432 int irq; 433 void (*func)(void *); 434{ 435 int result; 436 int s; 437 438 if (!(e_dev->ioconf.irq & (1ul << irq))) { 439 printf("%s%ld: Attempted to release an interrupt (%d) " 440 "it doesn't own\n", e_dev->driver->name, 441 e_dev->unit, irq); 442 return (-1); 443 } 444 445 s = splhigh(); 446 INTRDIS ((1ul<<irq)); 447 448 result = unregister_intr (irq, (inthand2_t*)func); 449 450 if (result) 451 printf ("eisa_release_intr: result=%d\n", result); 452 453 update_intr_masks(); 454 455 splx(s); 456 return (result); 457} 458 459int 460eisa_enable_intr(e_dev, irq) 461 struct eisa_device *e_dev; 462 int irq; 463{ 464 int s; 465 466 if (!(e_dev->ioconf.irq & (1ul << irq))) { 467 printf("%s%ld: Attempted to enable an interrupt (%d) " 468 "it doesn't own\n", e_dev->driver->name, 469 e_dev->unit, irq); 470 return (-1); 471 } 472 s = splhigh(); 473 INTREN((1ul << irq)); 474 splx(s); 475 return 0; 476} 477 478static int 479eisa_add_resvaddr(e_dev, head, base, size, flags) 480 struct eisa_device *e_dev; 481 struct resvlist *head; 482 u_long base; 483 u_long size; 484 int flags; 485{ 486 resvaddr_t *reservation; 487 488 reservation = (resvaddr_t *)malloc(sizeof(resvaddr_t), 489 M_DEVBUF, M_NOWAIT); 490 if(!reservation) 491 return (ENOMEM); 492 493 reservation->addr = base; 494 reservation->size = size; 495 reservation->flags = flags; 496 497 if (!head->lh_first) { 498 LIST_INSERT_HEAD(head, reservation, links); 499 } 500 else { 501 resvaddr_t *node; 502 for(node = head->lh_first; node; node = node->links.le_next) { 503 if (node->addr > reservation->addr) { 504 /* 505 * List is sorted in increasing 506 * address order. 507 */ 508 LIST_INSERT_BEFORE(node, reservation, links); 509 break; 510 } 511 512 if (node->addr == reservation->addr) { 513 /* 514 * If the entry we want to add 515 * matches any already in here, 516 * fail. 517 */ 518 free(reservation, M_DEVBUF); 519 return (EEXIST); 520 } 521 522 if (!node->links.le_next) { 523 LIST_INSERT_AFTER(node, reservation, links); 524 break; 525 } 526 } 527 } 528 return (0); 529} 530 531int 532eisa_add_mspace(e_dev, mbase, msize, flags) 533 struct eisa_device *e_dev; 534 u_long mbase; 535 u_long msize; 536 int flags; 537{ 538 return eisa_add_resvaddr(e_dev, &(e_dev->ioconf.maddrs), mbase, msize, 539 flags); 540} 541 542int 543eisa_add_iospace(e_dev, iobase, iosize, flags) 544 struct eisa_device *e_dev; 545 u_long iobase; 546 u_long iosize; 547 int flags; 548{ 549 return eisa_add_resvaddr(e_dev, &(e_dev->ioconf.ioaddrs), iobase, 550 iosize, flags); 551} 552 553static int 554eisa_reg_resvaddr(e_dev, head, resvaddr, reg_count) 555 struct eisa_device *e_dev; 556 struct resvlist *head; 557 resvaddr_t *resvaddr; 558 int *reg_count; 559{ 560 if (reg_state.in_registration) { 561 resvaddr_t *node; 562 /* 563 * Ensure that this resvaddr is actually in the devices' 564 * reservation list. 565 */ 566 for(node = head->lh_first; node; 567 node = node->links.le_next) { 568 if (node == resvaddr) { 569 char buf[35]; 570 char separator = ','; 571 char *string = buf; 572 573 if (*reg_count == 0) { 574 /* First time */ 575 string += sprintf(string, " at"); 576 } 577 578 if (node->size == 1 579 || (node->flags & RESVADDR_BITMASK)) 580 sprintf(string, " 0x%lx", node->addr); 581 else 582 sprintf(string, " 0x%lx-0x%lx", 583 node->addr, 584 node->addr + node->size - 1); 585 eisa_reg_print(e_dev, buf, 586 *reg_count ? &separator : NULL); 587 (*reg_count)++; 588 return (0); 589 } 590 } 591 return (ENOENT); 592 } 593 return EPERM; 594} 595 596int 597eisa_reg_mspace(e_dev, resvaddr) 598 struct eisa_device *e_dev; 599 resvaddr_t *resvaddr; 600{ 601#ifdef NOT_YET 602 /* 603 * Punt on conflict detection for the moment. 604 * I want to develop a generic routine to do 605 * this for all device types. 606 */ 607 int checkthese = CC_MADDR; 608 if (haveseen_dev(dev, checkthese)) 609 return -1; 610#endif 611 return (eisa_reg_resvaddr(e_dev, &(e_dev->ioconf.maddrs), resvaddr, 612 &(reg_state.num_maddrs))); 613} 614 615int 616eisa_reg_iospace(e_dev, resvaddr) 617 struct eisa_device *e_dev; 618 resvaddr_t *resvaddr; 619{ 620#ifdef NOT_YET 621 /* 622 * Punt on conflict detection for the moment. 623 * I want to develop a generic routine to do 624 * this for all device types. 625 */ 626 int checkthese = CC_IOADDR; 627 if (haveseen_dev(dev, checkthese)) 628 return -1; 629#endif 630 return (eisa_reg_resvaddr(e_dev, &(e_dev->ioconf.ioaddrs), resvaddr, 631 &(reg_state.num_ioaddrs))); 632} 633 634int 635eisa_registerdev(e_dev, driver) 636 struct eisa_device *e_dev; 637 struct eisa_driver *driver; 638{ 639 e_dev->driver = driver; /* Driver now owns this device */ 640 return (0); 641} 642 643