summaryrefslogtreecommitdiff
path: root/bsd-core/drm_agpsupport.c
AgeCommit message (Expand)Author
2007-08-15Fix dev->agp->base initialization on BSD, and fix addmap range check on Linux.Eric Anholt
2007-08-15BSD: Replace brief description in each file's first line with doxygen later on.Eric Anholt
2007-07-20Replace DRM_IOCTL_ARGS with (dev, data, file_priv) and remove DRM_DEVICE.Eric Anholt
2007-05-29Update a bunch of FreeBSD port code.Jung-uk Kim
2005-12-30Merge patch from jhb to catch up with FreeBSD-current vgapci master deviceEric Anholt
2005-12-05Remove driver.device_is_agp code duplicated in drm_device_find_capability,Eric Anholt
2005-11-28Fix AGP support guessing: Implement the same bridge checking in the MGAEric Anholt
2005-11-08Fix FreeBSD DRM for latest MGA changes to agp support, which cleans thingsEric Anholt
2005-08-05Rename the driver hooks in the DRM to something a little moreEric Anholt
2005-07-20Add latest r300 support from r300.sf.net CVS. Patch submitted by volodya,Eric Anholt
2005-06-29Get the BSD DRM compiling again after MGA and mapping changes. Note thatEric Anholt
2005-06-14Adds support for PCI cards to MGA DRMIan Romanick
2005-05-27Modify drm_driver::device_is_agp to return a tri-state value to indicateIan Romanick
2005-05-16Added device_is_agp callback to drm_driver. This function is called by theIan Romanick
2005-04-16Use /*- to begin license blocks in BSD code to reduce diffs against FreeBSDEric Anholt
2005-01-17Add detection of whether the device is AGP by walking the capabilitiesEric Anholt
2004-11-07Now that the memory debug code is gone, and all 3 BSDs have M_ZERO, stopEric Anholt
2004-11-06Commit first pieces of port to OpenBSD, done by Martin Lexa (martin atEric Anholt
2004-11-06Commit WIP of BSD conversion to core model. Compiles for r128, radeon, butEric Anholt
2003-08-19- Remove $FreeBSD$ tags as they weren't too useful and merges are now beingEric Anholt
2003-04-26Remove #if 0'ed code.Eric Anholt
2003-03-11Merge back from FreeBSD-current, adding FreeBSD ID tags to aid futureEric Anholt
2003-02-21Merge from bsd-4-0-0-branch.Eric Anholt
2002-09-26Fix one warning.Eric Anholt
2002-07-05merged bsd-3-0-0-branchAlan Hourihane
2002-01-27Import of XFree86 4.2.0David Dawes
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-07 20:18:08 +0000
n222' href='#n222'>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 
/*-
 * Copyright 1999 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.
 *
 * Author:
 *    Rickard E. (Rik) Faith <faith@valinux.com>
 *    Gareth Hughes <gareth@valinux.com>
 *
 */

/** @file drm_agpsupport.c
 * Support code for tying the kernel AGP support to DRM drivers and
 * the DRM's AGP ioctls.
 */

#include "drmP.h"

#ifdef __FreeBSD__
#if __FreeBSD_version >= 800004
#include <dev/agp/agpreg.h>
#else /* __FreeBSD_version >= 800004 */
#include <pci/agpreg.h>
#endif /* __FreeBSD_version >= 800004 */
#include <dev/pci/pcireg.h>
#endif

/* Returns 1 if AGP or 0 if not. */
static int
drm_device_find_capability(struct drm_device *dev, int cap)
{
#ifdef __FreeBSD__
#if __FreeBSD_version >= 602102

	return (pci_find_extcap(dev->device, cap, NULL) == 0);
#else
	/* Code taken from agp.c.  IWBNI that was a public interface. */
	u_int32_t status;
	u_int8_t ptr, next;

	/*
	 * Check the CAP_LIST bit of the PCI status register first.
	 */
	status = pci_read_config(dev->device, PCIR_STATUS, 2);
	if (!(status & 0x10))
		return 0;

	/*
	 * Traverse the capabilities list.
	 */
	for (ptr = pci_read_config(dev->device, AGP_CAPPTR, 1);
	     ptr != 0;
	     ptr = next) {
		u_int32_t capid = pci_read_config(dev->device, ptr, 4);
		next = AGP_CAPID_GET_NEXT_PTR(capid);

		/*
		 * If this capability entry ID is cap, then we are done.
		 */
		if (AGP_CAPID_GET_CAP_ID(capid) == cap)
			return 1;
	}

	return 0;
#endif
#else
	/* XXX: fill me in for non-FreeBSD */
	return 1;
#endif
}

int drm_device_is_agp(struct drm_device *dev)
{
	if (dev->driver->device_is_agp != NULL) {
		int ret;

		/* device_is_agp returns a tristate, 0 = not AGP, 1 = definitely
		 * AGP, 2 = fall back to PCI capability
		 */
		ret = (*dev->driver->device_is_agp)(dev);
		if (ret != DRM_MIGHT_BE_AGP)
			return ret;
	}

	return (drm_device_find_capability(dev, PCIY_AGP));
}

int drm_device_is_pcie(struct drm_device *dev)
{
	return (drm_device_find_capability(dev, PCIY_EXPRESS));
}

int drm_agp_info(struct drm_device * dev, struct drm_agp_info *info)
{
	struct agp_info *kern;

	if (!dev->agp || !dev->agp->acquired)
		return EINVAL;

	kern                   = &dev->agp->info;
	agp_get_info(dev->agp->agpdev, kern);
	info->agp_version_major = 1;
	info->agp_version_minor = 0;
	info->mode              = kern->ai_mode;
	info->aperture_base     = kern->ai_aperture_base;
	info->aperture_size     = kern->ai_aperture_size;
	info->memory_allowed    = kern->ai_memory_allowed;
	info->memory_used       = kern->ai_memory_used;
	info->id_vendor         = kern->ai_devid & 0xffff;
	info->id_device         = kern->ai_devid >> 16;

	return 0;
}

int drm_agp_info_ioctl(struct drm_device *dev, void *data,
		       struct drm_file *file_priv)
{
	int err;
	struct drm_agp_info info;

	err = drm_agp_info(dev, &info);
	if (err != 0)
		return err;

	*(struct drm_agp_info *) data = info;
	return 0;
}

int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
			  struct drm_file *file_priv)
{

	return drm_agp_acquire(dev);
}

int drm_agp_acquire(struct drm_device *dev)
{
	int retcode;

	if (!dev->agp || dev->agp->acquired)
		return EINVAL;

	retcode = agp_acquire(dev->agp->agpdev);
	if (retcode)
		return retcode;

	dev->agp->acquired = 1;
	return 0;
}

int drm_agp_release_ioctl(struct drm_device *dev, void *data,
			  struct drm_file *file_priv)
{

	return drm_agp_release(dev);
}

int drm_agp_release(struct drm_device * dev)
{
	if (!dev->agp || !dev->agp->acquired)
		return EINVAL;
	agp_release(dev->agp->agpdev);
	dev->agp->acquired = 0;
	return 0;
}

int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode)
{

	if (!dev->agp || !dev->agp->acquired)
		return EINVAL;
	
	dev->agp->mode    = mode.mode;
	agp_enable(dev->agp->agpdev, mode.mode);
	dev->agp->enabled = 1;
	return 0;
}

int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
			 struct drm_file *file_priv)
{
	struct drm_agp_mode mode;

	mode = *(struct drm_agp_mode *) data;

	return drm_agp_enable(dev, mode);
}

int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request)
{
	drm_agp_mem_t    *entry;
	void	         *handle;
	unsigned long    pages;
	u_int32_t	 type;
	struct agp_memory_info info;

	if (!dev->agp || !dev->agp->acquired)
		return EINVAL;

	entry = malloc(sizeof(*entry), M_DRM, M_NOWAIT | M_ZERO);
	if (entry == NULL)
		return ENOMEM;

	pages = (request->size + PAGE_SIZE - 1) / PAGE_SIZE;
	type = (u_int32_t) request->type;

	DRM_UNLOCK();
	handle = drm_agp_allocate_memory(pages, type);
	DRM_LOCK();
	if (handle == NULL) {
		free(entry, M_DRM);
		return ENOMEM;
	}
	
	entry->handle    = handle;
	entry->bound     = 0;
	entry->pages     = pages;
	entry->prev      = NULL;
	entry->next      = dev->agp->memory;
	if (dev->agp->memory)
		dev->agp->memory->prev = entry;
	dev->agp->memory = entry;

	agp_memory_info(dev->agp->agpdev, entry->handle, &info);

	request->handle   = (unsigned long) entry->handle;
        request->physical = info.ami_physical;

	return 0;
}

int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
			struct drm_file *file_priv)
{
	struct drm_agp_buffer request;
	int retcode;

	request = *(struct drm_agp_buffer *) data;

	DRM_LOCK();
	retcode = drm_agp_alloc(dev, &request);
	DRM_UNLOCK();

	*(struct drm_agp_buffer *) data = request;

	return retcode;
}

static drm_agp_mem_t * drm_agp_lookup_entry(struct drm_device *dev,
					    void *handle)
{
	drm_agp_mem_t *entry;

	for (entry = dev->agp->memory; entry; entry = entry->next) {
		if (entry->handle == handle) return entry;
	}
	return NULL;
}

int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request)
{
	drm_agp_mem_t     *entry;
	int retcode;

	if (!dev->agp || !dev->agp->acquired)
		return EINVAL;

	entry = drm_agp_lookup_entry(dev, (void *)request->handle);
	if (entry == NULL || !entry->bound)
		return EINVAL;

	DRM_UNLOCK();
	retcode = drm_agp_unbind_memory(entry->handle);
	DRM_LOCK();

	if (retcode == 0)
		entry->bound = 0;

	return retcode;
}

int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
			 struct drm_file *file_priv)
{
	struct drm_agp_binding request;
	int retcode;

	request = *(struct drm_agp_binding *) data;

	DRM_LOCK();
	retcode = drm_agp_unbind(dev, &request);
	DRM_UNLOCK();

	return retcode;
}

int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request)
{
	drm_agp_mem_t     *entry;
	int               retcode;
	int               page;
	
	if (!dev->agp || !dev->agp->acquired)
		return EINVAL;

	DRM_DEBUG("agp_bind, page_size=%x\n", PAGE_SIZE);

	entry = drm_agp_lookup_entry(dev, (void *)request->handle);
	if (entry == NULL || entry->bound)
		return EINVAL;

	page = (request->offset + PAGE_SIZE - 1) / PAGE_SIZE;

	DRM_UNLOCK();
	retcode = drm_agp_bind_memory(entry->handle, page);
	DRM_LOCK();
	if (retcode == 0)
		entry->bound = dev->agp->base + (page << PAGE_SHIFT);

	return retcode;
}

int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
		       struct drm_file *file_priv)
{
	struct drm_agp_binding request;
	int retcode;

	request = *(struct drm_agp_binding *) data;

	DRM_LOCK();
	retcode = drm_agp_bind(dev, &request);
	DRM_UNLOCK();

	return retcode;
}

int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request)
{
	drm_agp_mem_t    *entry;
	
	if (!dev->agp || !dev->agp->acquired)
		return EINVAL;

	entry = drm_agp_lookup_entry(dev, (void*)request->handle);
	if (entry == NULL)
		return EINVAL;
   
	if (entry->prev)
		entry->prev->next = entry->next;
	else
		dev->agp->memory  = entry->next;
	if (entry->next)
		entry->next->prev = entry->prev;

	DRM_UNLOCK();
	if (entry->bound)
		drm_agp_unbind_memory(entry->handle);
	drm_agp_free_memory(entry->handle);
	DRM_LOCK();

	free(entry, M_DRM);

	return 0;

}

int drm_agp_free_ioctl(struct drm_device *dev, void *data,
		       struct drm_file *file_priv)
{
	struct drm_agp_buffer request;
	int retcode;

	request = *(struct drm_agp_buffer *) data;

	DRM_LOCK();
	retcode = drm_agp_free(dev, &request);
	DRM_UNLOCK();

	return retcode;
}

drm_agp_head_t *drm_agp_init(void)
{
	device_t agpdev;
	drm_agp_head_t *head   = NULL;
	int      agp_available = 1;
   
	agpdev = DRM_AGP_FIND_DEVICE();
	if (!agpdev)
		agp_available = 0;

	DRM_DEBUG("agp_available = %d\n", agp_available);

	if (agp_available) {
		head = malloc(sizeof(*head), M_DRM, M_NOWAIT | M_ZERO);
		if (head == NULL)
			return NULL;
		head->agpdev = agpdev;
		agp_get_info(agpdev, &head->info);
		head->base = head->info.ai_aperture_base;
		head->memory = NULL;
		DRM_INFO("AGP at 0x%08lx %dMB\n",
			 (long)head->info.ai_aperture_base,
			 (int)(head->info.ai_aperture_size >> 20));
	}
	return head;
}

void *drm_agp_allocate_memory(size_t pages, u32 type)
{
	device_t agpdev;

	agpdev = DRM_AGP_FIND_DEVICE();
	if (!agpdev)
		return NULL;

	return agp_alloc_memory(agpdev, type, pages << AGP_PAGE_SHIFT);
}

int drm_agp_free_memory(void *handle)
{
	device_t agpdev;

	agpdev = DRM_AGP_FIND_DEVICE();
	if (!agpdev || !handle)
		return 0;

	agp_free_memory(agpdev, handle);
	return 1;
}

int drm_agp_bind_memory(void *handle, off_t start)
{
	device_t agpdev;

	agpdev = DRM_AGP_FIND_DEVICE();
	if (!agpdev || !handle)
		return EINVAL;

	return agp_bind_memory(agpdev, handle, start * PAGE_SIZE);
}

int drm_agp_unbind_memory(void *handle)
{
	device_t agpdev;

	agpdev = DRM_AGP_FIND_DEVICE();
	if (!agpdev || !handle)
		return EINVAL;

	return agp_unbind_memory(agpdev, handle);
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-07 20:18:07 +0000