/* sis_ds.h -- Private header for Direct Rendering Manager -*- linux-c -*- * Created: Mon Jan 4 10:05:05 1999 by sclin@sis.com.tw */ /* * Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan. * All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. * * Authors: * Sung-Ching Lin * */ #ifndef __SIS_DS_H__ #define __SIS_DS_H__ /* Set Data Structure */ #define SET_SIZE 5000 typedef unsigned long ITEM_TYPE; typedef struct { ITEM_TYPE val; int alloc_next, free_next; } list_item_t; typedef struct { int alloc; int free; int trace; list_item_t list[SET_SIZE]; } set_t; set_t *setInit(void); int setAdd(set_t * set, ITEM_TYPE item); int setDel(set_t * set, ITEM_TYPE item); int setFirst(set_t * set, ITEM_TYPE * item); int setNext(set_t * set, ITEM_TYPE * item); int setDestroy(set_t * set); /* * GLX Hardware Device Driver common code * Copyright (C) 1999 Wittawat Yamwong * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * WITTAWAT YAMWONG, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * */ struct mem_block_t { struct mem_block_t *next; struct mem_block_t *heap; int ofs, size; int align; unsigned int free:1; unsigned int reserved:1; }; typedef struct mem_block_t TMemBlock; typedef struct mem_block_t *PMemBlock; /* a heap is just the first block in a chain */ typedef struct mem_block_t memHeap_t; static __inline__ int mmBlockSize(PMemBlock b) { return b->size; } static __inline__ int mmOffset(PMemBlock b) { return b->ofs; } static __inline__ void mmMarkReserved(PMemBlock b) { b->reserved = 1; } /* * input: total size in bytes * return: a heap pointer if OK, NULL if error */ memHeap_t *mmInit(int ofs, int size); /* * Allocate 'size' bytes with 2^align2 bytes alignment, * restrict the search to free memory after 'startSearch' * depth and back buffers should be in different 4mb banks * to get better page hits if possible * input: size = size of block * align2 = 2^align2 bytes alignment * startSearch = linear offset from start of heap to begin search * return: pointer to the allocated block, 0 if error */ PMemBlock mmAllocMem(memHeap_t * heap, int size, int align2, int startSearch); /* * Returns 1 if the block 'b' is part of the heap 'heap' */ int mmBlockInHeap(PMemBlock heap, PMemBlock b); /* * Free block starts at offset * input: pointer to a block * return: 0 if OK, -1 if error */ int mmFreeMem(PMemBlock b); /* For debuging purpose. */ void mmDumpMemInfo(memHeap_t * mmInit); #endif /* __SIS_DS_H__ */ n59' href='#n59'>59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 
/*-
 * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 *    Rickard E. (Rik) Faith <faith@valinux.com>
 *    Gareth Hughes <gareth@valinux.com>
 *
 */

/** @file drm_drv.c
 * The catch-all file for DRM device support, including module setup/teardown,
 * open/close, and ioctl dispatch.
 */


#include <sys/limits.h>
#include "drmP.h"
#include "drm.h"
#include "drm_sarea.h"

#ifdef DRM_DEBUG_DEFAULT_ON
int drm_debug_flag = 1;
#else
int drm_debug_flag = 0;
#endif

static int drm_load(struct drm_device *dev);
static void drm_unload(struct drm_device *dev);
static drm_pci_id_list_t *drm_find_description(int vendor, int device,
    drm_pci_id_list_t *idlist);

#define DRIVER_SOFTC(unit) \
	((struct drm_device *)devclass_get_softc(drm_devclass, unit))

MODULE_VERSION(drm, 1);
MODULE_DEPEND(drm, agp, 1, 1, 1);
MODULE_DEPEND(drm, pci, 1, 1, 1);
MODULE_DEPEND(drm, mem, 1, 1, 1);

static drm_ioctl_desc_t		  drm_ioctls[256] = {
	DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0),
	DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
	DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
	DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0),
	DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0),
	DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0),
	DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY),

	DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),

	DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),

	DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),

	DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
	DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),

	DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),

	DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
	DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),

	DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),

	DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
	DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
	DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
	DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH),

	DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),

	DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH),
	DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),

	DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0),
	DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
	DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
};

static struct cdevsw drm_cdevsw = {
	.d_version =	D_VERSION,
	.d_open =	drm_open,
	.d_read =	drm_read,
	.d_ioctl =	drm_ioctl,
	.d_poll =	drm_poll,
	.d_mmap =	drm_mmap,
	.d_name =	"drm",
	.d_flags =	D_TRACKCLOSE
};

int drm_msi = 1;	/* Enable by default. */
TUNABLE_INT("hw.drm.msi", &drm_msi);

static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
	{0x8086, 0x2772}, /* Intel i945G	*/ \
	{0x8086, 0x27A2}, /* Intel i945GM	*/ \
	{0x8086, 0x27AE}, /* Intel i945GME	*/ \
	{0, 0}
};

static int drm_msi_is_blacklisted(int vendor, int device)
{
	int i = 0;
	
	for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) {
		if ((drm_msi_blacklist[i].vendor == vendor) &&
		    (drm_msi_blacklist[i].device == device)) {
			return 1;
		}
	}

	return 0;
}

int drm_probe(device_t kdev, drm_pci_id_list_t *idlist)
{
	drm_pci_id_list_t *id_entry;
	int vendor, device;
#if __FreeBSD_version < 700010
	device_t realdev;

	if (!strcmp(device_get_name(kdev), "drmsub"))
		realdev = device_get_parent(kdev);
	else
		realdev = kdev;
	vendor = pci_get_vendor(realdev);
	device = pci_get_device(realdev);
#else
	vendor = pci_get_vendor(kdev);
	device = pci_get_device(kdev);
#endif

	if (pci_get_class(kdev) != PCIC_DISPLAY
	    || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA)
		return ENXIO;

	id_entry = drm_find_description(vendor, device, idlist);
	if (id_entry != NULL) {
		if (!device_get_desc(kdev)) {
			DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
			device_set_desc(kdev, id_entry->name);
		}
		return 0;
	}

	return ENXIO;
}

int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
{
	struct drm_device *dev;
	drm_pci_id_list_t *id_entry;
	int unit, msicount;

	unit = device_get_unit(kdev);
	dev = device_get_softc(kdev);

#if __FreeBSD_version < 700010
	if (!strcmp(device_get_name(kdev), "drmsub"))
		dev->device = device_get_parent(kdev);
	else
		dev->device = kdev;
#else
	dev->device = kdev;
#endif
	dev->devnode = make_dev(&drm_cdevsw,
			unit,
			DRM_DEV_UID,
			DRM_DEV_GID,
			DRM_DEV_MODE,
			"dri/card%d", unit);

#if __FreeBSD_version >= 700053
	dev->pci_domain = pci_get_domain(dev->device);
#else
	dev->pci_domain = 0;
#endif
	dev->pci_bus = pci_get_bus(dev->device);
	dev->pci_slot = pci_get_slot(dev->device);
	dev->pci_func = pci_get_function(dev->device);

	dev->pci_vendor = pci_get_vendor(dev->device);
	dev->pci_device = pci_get_device(dev->device);

	if (drm_msi &&
	    !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) {
		msicount = pci_msi_count(dev->device);
		DRM_DEBUG("MSI count = %d\n", msicount);
		if (msicount > 1)
			msicount = 1;

		if (pci_alloc_msi(dev->device, &msicount) == 0) {
			DRM_INFO("MSI enabled %d message(s)\n", msicount);
			dev->msi_enabled = 1;
			dev->irqrid = 1;
		}
	}

	dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ,
	    &dev->irqrid, RF_SHAREABLE);
	if (!dev->irqr) {
		return ENOENT;
	}

	dev->irq = (int) rman_get_start(dev->irqr);

	mtx_init(&dev->dev_lock, "drmdev", NULL, MTX_DEF);
	mtx_init(&dev->irq_lock, "drmirq", NULL, MTX_DEF);
	mtx_init(&dev->vbl_lock, "drmvbl", NULL, MTX_DEF);
	mtx_init(&dev->drw_lock, "drmdrw", NULL, MTX_DEF);

	id_entry = drm_find_description(dev->pci_vendor,
	    dev->pci_device, idlist);
	dev->id_entry = id_entry;

	return drm_load(dev);
}

int drm_detach(device_t kdev)
{
	struct drm_device *dev;

	dev = device_get_softc(kdev);

	drm_unload(dev);

	bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid, dev->irqr);

	if (dev->msi_enabled) {
		pci_release_msi(dev->device);
		DRM_INFO("MSI released\n");
	}

	return 0;
}

#ifndef DRM_DEV_NAME
#define DRM_DEV_NAME "drm"
#endif

devclass_t drm_devclass;

drm_pci_id_list_t *drm_find_description(int vendor, int device,
    drm_pci_id_list_t *idlist)
{
	int i = 0;
	
	for (i = 0; idlist[i].vendor != 0; i++) {
		if ((idlist[i].vendor == vendor) &&
		    ((idlist[i].device == device) ||
		    (idlist[i].device == 0))) {
			return &idlist[i];
		}
	}
	return NULL;
}

static int drm_firstopen(struct drm_device *dev)
{
	drm_local_map_t *map;
	int i;

	DRM_SPINLOCK_ASSERT(&dev->dev_lock);

	/* prebuild the SAREA */
	i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
	    _DRM_CONTAINS_LOCK, &map);
	if (i != 0)
		return i;

	if (dev->driver->firstopen)
		dev->driver->firstopen(dev);

	dev->buf_use = 0;

	if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) {
		i = drm_dma_setup(dev);
		if (i != 0)
			return i;
	}

	for (i = 0; i < DRM_HASH_SIZE; i++) {
		dev->magiclist[i].head = NULL;
		dev->magiclist[i].tail = NULL;
	}

	dev->lock.lock_queue = 0;
	dev->irq_enabled = 0;
	dev->context_flag = 0;
	dev->last_context = 0;
	dev->if_version = 0;

	dev->buf_sigio = NULL;

	DRM_DEBUG("\n");

	return 0;
}

static int drm_lastclose(struct drm_device *dev)
{
	drm_magic_entry_t *pt, *next;
	drm_local_map_t *map, *mapsave;
	int i;

	DRM_SPINLOCK_ASSERT(&dev->dev_lock);

	DRM_DEBUG("\n");

	if (dev->driver->lastclose != NULL)
		dev->driver->lastclose(dev);

	if (dev->irq_enabled)
		drm_irq_uninstall(dev);

	if (dev->unique) {
		free(dev->unique, DRM_MEM_DRIVER);
		dev->unique = NULL;
		dev->unique_len = 0;
	}
	/* Clear pid list */
	for (i = 0; i < DRM_HASH_SIZE; i++) {
		for (pt = dev->magiclist[i].head; pt; pt = next) {
			next = pt->next;
			free(pt, DRM_MEM_MAGIC);
		}
		dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
	}

	DRM_UNLOCK();
	drm_drawable_free_all(dev);
	DRM_LOCK();

	/* Clear AGP information */
	if (dev->agp) {
		drm_agp_mem_t *entry;
		drm_agp_mem_t *nexte;

		/* Remove AGP resources, but leave dev->agp intact until
		 * drm_unload is called.
		 */
		for (entry = dev->agp->memory; entry; entry = nexte) {
			nexte = entry->next;
			if (entry->bound)
				drm_agp_unbind_memory(entry->handle);
			drm_agp_free_memory(entry->handle);
			free(entry, DRM_MEM_AGPLISTS);
		}
		dev->agp->memory = NULL;

		if (dev->agp->acquired)
			drm_agp_release(dev);

		dev->agp->acquired = 0;
		dev->agp->enabled  = 0;
	}
	if (dev->sg != NULL) {
		drm_sg_cleanup(dev->sg);
		dev->sg = NULL;
	}

	TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) {
		if (!(map->flags & _DRM_DRIVER))
			drm_rmmap(dev, map);
	}

	drm_dma_takedown(dev);
	if (dev->lock.hw_lock) {
		dev->lock.hw_lock = NULL; /* SHM removed */
		dev->lock.file_priv = NULL;
		DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
	}

	return 0;
}

static int drm_load(struct drm_device *dev)
{
	int i, retcode;

	DRM_DEBUG("\n");

	TAILQ_INIT(&dev->maplist);

	drm_mem_init();
	drm_sysctl_init(dev);
	TAILQ_INIT(&dev->files);

	dev->counters  = 6;
	dev->types[0]  = _DRM_STAT_LOCK;
	dev->types[1]  = _DRM_STAT_OPENS;
	dev->types[2]  = _DRM_STAT_CLOSES;
	dev->types[3]  = _DRM_STAT_IOCTLS;
	dev->types[4]  = _DRM_STAT_LOCKS;
	dev->types[5]  = _DRM_STAT_UNLOCKS;

	for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
		atomic_set(&dev->counts[i], 0);

	if (dev->driver->load != NULL) {
		DRM_LOCK();
		/* Shared code returns -errno. */
		retcode = -dev->driver->load(dev,
		    dev->id_entry->driver_private);
		if (pci_enable_busmaster(dev->device))
			DRM_ERROR("Request to enable bus-master failed.\n");
		DRM_UNLOCK();
		if (retcode != 0)
			goto error;
	}

	if (drm_core_has_AGP(dev)) {
		if (drm_device_is_agp(dev))
			dev->agp = drm_agp_init();
		if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
		    dev->agp == NULL) {
			DRM_ERROR("Card isn't AGP, or couldn't initialize "
			    "AGP.\n");
			retcode = ENOMEM;
			goto error;
		}
		if (dev->agp != NULL) {
			if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
			    dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
				dev->agp->mtrr = 1;
		}
	}

	retcode = drm_ctxbitmap_init(dev);
	if (retcode != 0) {
		DRM_ERROR("Cannot allocate memory for context bitmap.\n");
		goto error;
	}

	dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL);
	if (dev->drw_unrhdr == NULL) {
		DRM_ERROR("Couldn't allocate drawable number allocator\n");
		goto error;
	}

	DRM_INFO("Initialized %s %d.%d.%d %s\n",
	    dev->driver->name,
	    dev->driver->major,
	    dev->driver->minor,
	    dev->driver->patchlevel,
	    dev->driver->date);

	return 0;

error:
	drm_sysctl_cleanup(dev);
	DRM_LOCK();
	drm_lastclose(dev);
	DRM_UNLOCK();
	destroy_dev(dev->devnode);

	mtx_destroy(&dev->drw_lock);
	mtx_destroy(&dev->vbl_lock);
	mtx_destroy(&dev->irq_lock);
	mtx_destroy(&dev->dev_lock);

	return retcode;
}

static void drm_unload(struct drm_device *dev)
{
	int i;

	DRM_DEBUG("\n");

	drm_sysctl_cleanup(dev);
	destroy_dev(dev->devnode);

	drm_ctxbitmap_cleanup(dev);

	if (dev->agp && dev->agp->mtrr) {
		int __unused retcode;

		retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base,
		    dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
		DRM_DEBUG("mtrr_del = %d", retcode);
	}

	DRM_LOCK();
	drm_lastclose(dev);
	DRM_UNLOCK();

	drm_vblank_cleanup(dev);

	/* Clean up PCI resources allocated by drm_bufs.c.  We're not really
	 * worried about resource consumption while the DRM is inactive (between
	 * lastclose and firstopen or unload) because these aren't actually
	 * taking up KVA, just keeping the PCI resource allocated.
	 */
	for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
		if (dev->pcir[i] == NULL)
			continue;
		bus_release_resource(dev->device, SYS_RES_MEMORY,
		    dev->pcirid[i], dev->pcir[i]);
		dev->pcir[i] = NULL;
	}

	if (dev->agp) {
		free(dev->agp, DRM_MEM_AGPLISTS);
		dev->agp = NULL;
	}

	if (dev->driver->unload != NULL) {
		DRM_LOCK();
		dev->driver->unload(dev);
		DRM_UNLOCK();
	}

	delete_unrhdr(dev->drw_unrhdr);

	drm_mem_uninit();

	if (pci_disable_busmaster(dev->device))
		DRM_ERROR("Request to disable bus-master failed.\n");

	mtx_destroy(&dev->drw_lock);
	mtx_destroy(&dev->vbl_lock);
	mtx_destroy(&dev->irq_lock);
	mtx_destroy(&dev->dev_lock);
}

int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
	struct drm_version *version = data;
	int len;

#define DRM_COPY( name, value )						\
	len = strlen( value );						\
	if ( len > name##_len ) len = name##_len;			\
	name##_len = strlen( value );					\
	if ( len && name ) {						\
		if ( DRM_COPY_TO_USER( name, value, len ) )		\
			return EFAULT;				\
	}

	version->version_major		= dev->driver->major;
	version->version_minor		= dev->driver->minor;
	version->version_patchlevel	= dev->driver->patchlevel;

	DRM_COPY(version->name, dev->driver->name);
	DRM_COPY(version->date, dev->driver->date);
	DRM_COPY(version->desc, dev->driver->desc);

	return 0;
}

int drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p)
{
	struct drm_device *dev = NULL;
	int retcode = 0;

	dev = DRIVER_SOFTC(dev2unit(kdev));

	DRM_DEBUG("open_count = %d\n", dev->open_count);

	retcode = drm_open_helper(kdev, flags, fmt, p, dev);

	if (!retcode) {
		atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
		DRM_LOCK();
		device_busy(dev->device);
		if (!dev->open_count++)
			retcode = drm_firstopen(dev);
		DRM_UNLOCK();
	}

	return retcode;
}

void drm_close(void *data)
{
	struct drm_file *file_priv = data;
	struct drm_device *dev = file_priv->dev;
	int retcode = 0;

	DRM_DEBUG("open_count = %d\n", dev->open_count);

	DRM_LOCK();

	if (dev->driver->preclose != NULL)
		dev->driver->preclose(dev, file_priv);

	/* ========================================================
	 * Begin inline drm_release
	 */

	DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
	    DRM_CURRENTPID, (long)dev->device, dev->open_count);

	if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
	    && dev->lock.file_priv == file_priv) {
		DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
			  DRM_CURRENTPID,
			  _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
		if (dev->driver->reclaim_buffers_locked != NULL)
			dev->driver->reclaim_buffers_locked(dev, file_priv);

		drm_lock_free(&dev->lock,
		    _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
		
				/* FIXME: may require heavy-handed reset of
                                   hardware at this point, possibly
                                   processed via a callback to the X
                                   server. */
	} else if (dev->driver->reclaim_buffers_locked != NULL &&
	    dev->lock.hw_lock != NULL) {
		/* The lock is required to reclaim buffers */
		for (;;) {
			if (!dev->lock.hw_lock) {
				/* Device has been unregistered */
				retcode = EINTR;
				break;
			}
			if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
				dev->lock.file_priv = file_priv;
				dev->lock.lock_time = jiffies;
				atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
				break;	/* Got lock */
			}
			/* Contention */
			retcode = mtx_sleep((void *)&dev->lock.lock_queue,
			    &dev->dev_lock, PCATCH, "drmlk2", 0);
			if (retcode)
				break;
		}
		if (retcode == 0) {
			dev->driver->reclaim_buffers_locked(dev, file_priv);
			drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
		}
	}

	if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
	    !dev->driver->reclaim_buffers_locked)
		drm_reclaim_buffers(dev, file_priv);

	funsetown(&dev->buf_sigio);

	if (dev->driver->postclose != NULL)
		dev->driver->postclose(dev, file_priv);
	TAILQ_REMOVE(&dev->files, file_priv, link);
	free(file_priv, DRM_MEM_FILES);

	/* ========================================================
	 * End inline drm_release
	 */

	atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
	device_unbusy(dev->device);
	if (--dev->open_count == 0) {
		retcode = drm_lastclose(dev);
	}

	DRM_UNLOCK();
}

/* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
 */
int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags, 
    DRM_STRUCTPROC *p)
{
	struct drm_device *dev = drm_get_device_from_kdev(kdev);
	int retcode = 0;
	drm_ioctl_desc_t *ioctl;
	int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
	int nr = DRM_IOCTL_NR(cmd);
	int is_driver_ioctl = 0;
	struct drm_file *file_priv;

	retcode = devfs_get_cdevpriv((void **)&file_priv);
	if (retcode != 0) {
		DRM_ERROR("can't find authenticator\n");
		return EINVAL;
	}

	atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
	++file_priv->ioctl_count;

	DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
	    DRM_CURRENTPID, cmd, nr, (long)dev->device,
	    file_priv->authenticated);

	switch (cmd) {
	case FIONBIO:
	case FIOASYNC:
		return 0;

	case FIOSETOWN:
		return fsetown(*(int *)data, &dev->buf_sigio);

	case FIOGETOWN:
		*(int *) data = fgetown(&dev->buf_sigio);
		return 0;
	}

	if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
		DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
		return EINVAL;
	}

	ioctl = &drm_ioctls[nr];
	/* It's not a core DRM ioctl, try driver-specific. */
	if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
		/* The array entries begin at DRM_COMMAND_BASE ioctl nr */
		nr -= DRM_COMMAND_BASE;
		if (nr > dev->driver->max_ioctl) {
			DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
			    nr, dev->driver->max_ioctl);
			return EINVAL;
		}
		ioctl = &dev->driver->ioctls[nr];
		is_driver_ioctl = 1;
	}
	func = ioctl->func;

	if (func == NULL) {
		DRM_DEBUG("no function\n");
		return EINVAL;
	}

	if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
	    ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
	    ((ioctl->flags & DRM_MASTER) && !file_priv->master))
		return EACCES;

	if (is_driver_ioctl) {
		DRM_LOCK();
		/* shared code returns -errno */
		retcode = -func(dev, data, file_priv);
		DRM_UNLOCK();
	} else {
		retcode = func(dev, data, file_priv);
	}

	if (retcode != 0)
		DRM_DEBUG("    returning %d\n", retcode);

	return retcode;
}

drm_local_map_t *drm_getsarea(struct drm_device *dev)
{
	drm_local_map_t *map;

	DRM_SPINLOCK_ASSERT(&dev->dev_lock);
	TAILQ_FOREACH(map, &dev->maplist, link) {
		if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
			return map;
	}

	return NULL;
}

#if DRM_LINUX

#include <sys/sysproto.h>

MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);

#define LINUX_IOCTL_DRM_MIN		0x6400
#define LINUX_IOCTL_DRM_MAX		0x64ff

static linux_ioctl_function_t drm_linux_ioctl;
static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, 
    LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};

SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE, 
    linux_ioctl_register_handler, &drm_handler);
SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, 
    linux_ioctl_unregister_handler, &drm_handler);

/* The bits for in/out are switched on Linux */
#define LINUX_IOC_IN	IOC_OUT
#define LINUX_IOC_OUT	IOC_IN

static int
drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
{
	int error;
	int cmd = args->cmd;

	args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
	if (cmd & LINUX_IOC_IN)
		args->cmd |= IOC_IN;
	if (cmd & LINUX_IOC_OUT)
		args->cmd |= IOC_OUT;
	
	error = ioctl(p, (struct ioctl_args *)args);

	return error;
}
#endif /* DRM_LINUX */
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-11 01:45:25 +0000