summaryrefslogtreecommitdiff
path: root/shared-core/radeon_state.c
AgeCommit message (Expand)Author
2008-12-10Revert "Merge branch 'modesetting-gem'"Jesse Barnes
2008-11-03radeon: commit ring after emitting the buffer discardsDave Airlie
2008-11-03radeon: add wait rendering APIDave Airlie
2008-11-03radeon: remove unused gem indirect ioctlDave Airlie
2008-11-03radeon: make new CS2 command submission interface port older interface to thisDave Airlie
2008-08-14radeon: fix kernel_mm properlyDave Airlie
2008-08-14radeon: use mm_enabled variable to denote memory manager runningDave Airlie
2008-08-14radeon: make buffer swap for older drivers work again on GEMDave Airlie
2008-08-14radeon: add userspace call for mm support checkDave Airlie
2008-08-06radeon: fix setting new memmap in right placeDave Airlie
2008-08-04radeon: add userspace mm enable switchDave Airlie
2008-07-30radeon: add some handles to the sarea + kernel mm available checkDave Airlie
2008-07-28radeon command submission startDave Airlie
2008-07-26radeon: add initial atombios modesetting and GEM -> TTM translation layer.Dave Airlie
2008-05-28Merge branch 'master' of git+ssh://git.freedesktop.org/git/mesa/drm into mode...Alan Hourihane
2008-05-27RADEON: add get_param for number of GB pipesAlex Deucher
2008-03-12Merge branch 'master' of git+ssh://git.freedesktop.org/git/mesa/drm into mode...Alan Hourihane
2008-03-08drm/radeon: check sarea_priv existsDave Airlie
2008-02-26Merge branch 'master' of git+ssh://git.freedesktop.org/git/mesa/drm into mode...Alan Hourihane
2008-02-23fix texture uploads with large 3d textures (bug 13980)Roland Scheidegger
2008-02-14missing bitsDave Airlie
2008-01-03drm: cleanup DRM_DEBUG() parametersMárton Németh
2007-11-22drm: major whitespace/coding style realignment with kernelDave Airlie
2007-11-18radeon: refactor out the fb/agp location read/write.Dave Airlie
2007-11-05drm: remove lots of spurious whitespace.Dave Airlie
2007-09-29radeon: Commit the ring after each partial texture upload blit.chaohong guo
2007-07-20Replace DRM_IOCTL_ARGS with (dev, data, file_priv) and remove DRM_DEVICE.Eric Anholt
2007-07-20Replace filp in ioctl arguments with drm_file *file_priv.Eric Anholt
2007-07-20Remove DRM_ERR OS macro.Eric Anholt
2007-07-16drm: remove drmP.h internal typedefsDave Airlie
2007-07-16drm: detypedef drm.h and fixup all problemsDave Airlie
2007-06-03radeon: add support for vblank on crtc2Dave Airlie
2007-04-29radeon: Don't mess up page flipping when a file descriptor is closed.Michel Dänzer
2007-03-04radeon: make PCI GART aperture size variable, but making table size variableDave Airlie
2006-12-14Unify radeon offset checking.Michel Dänzer
2006-10-10only allow specific type-3 packets to pass the verifier instead of all for r1...Roland Scheidegger
2006-09-20do a TCL state flush before accessing VAP_CNTL to prevent lockups on r200 whe...Roland Scheidegger
2006-09-15Use register writes instead of BITBLT_MULTI packets for buffer swap blits.Michel Dänzer
2006-09-12drm: use radeon specific names for radeon flagsDave Airlie
2006-08-28drm: lots of small cleanups and whitespace issues fixed upDave Airlie
2006-08-26Bug #7595: Avoid u32 overflows in radeon_check_and_fixup_offset().Michel Dänzer
2006-07-19Implement RADEON_PARAM_SCRATCH_OFFSET getparam.Michel Dänzer
2006-07-19Some debug output when the getparam ioctl is called with an unknown parameter.Michel Dänzer
2006-05-24Add support for r200 vertex programs (R200_EMIT_VAP_PVS_CNTL, and newRoland Scheidegger
2006-05-20Do a tcl state flush before accessing tcl vector space. This fixes someRoland Scheidegger
2006-04-18Err, use "ifndef" rather than "if !", to avoid compiler warning.Eric Anholt
2006-04-18Use __LP64__ instead of checking the linux-specific BITS_PER_LONG.Eric Anholt
2006-04-08Compile fixes for FreeBSD.Eric Anholt
2006-03-25radeon fix up the PCI ids for new memory map like the kernel one.. notDave Airlie
2006-03-08Fix bug I reintroducedDave Airlie
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-08 20:19:21 +0000
href='#n437'>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 
/**
 * \file drm_context.h 
 * IOCTLs for generic contexts
 * 
 * \author Rickard E. (Rik) Faith <faith@valinux.com>
 * \author Gareth Hughes <gareth@valinux.com>
 */

/*
 * Created: Fri Nov 24 18:31:37 2000 by gareth@valinux.com
 *
 * 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.
 */

/*
 * ChangeLog:
 *  2001-11-16	Torsten Duwe <duwe@caldera.de>
 *		added context constructor/destructor hooks,
 *		needed by SiS driver's memory management.
 */

#include "drmP.h"

/******************************************************************/
/** \name Context bitmap support */
/*@{*/

/**
 * Free a handle from the context bitmap.
 *
 * \param dev DRM device.
 * \param ctx_handle context handle.
 *
 * Clears the bit specified by \p ctx_handle in drm_device::ctx_bitmap and the entry
 * in drm_device::context_sareas, while holding the drm_device::struct_sem
 * lock.
 */
void DRM(ctxbitmap_free)( drm_device_t *dev, int ctx_handle )
{
	if ( ctx_handle < 0 ) goto failed;
	if ( !dev->ctx_bitmap ) goto failed;

	if ( ctx_handle < DRM_MAX_CTXBITMAP ) {
		down(&dev->struct_sem);
		clear_bit( ctx_handle, dev->ctx_bitmap );
		dev->context_sareas[ctx_handle] = NULL;
		up(&dev->struct_sem);
		return;
	}
failed:
       	DRM_ERROR( "Attempt to free invalid context handle: %d\n",
		   ctx_handle );
       	return;
}

/** 
 * Context bitmap allocation.
 *
 * \param dev DRM device.
 * \return (non-negative) context handle on success or a negative number on failure.
 *
 * Find the first zero bit in drm_device::ctx_bitmap and (re)allocates
 * drm_device::context_sareas to accommodate the new entry while holding the
 * drm_device::struct_sem lock.
 */
int DRM(ctxbitmap_next)( drm_device_t *dev )
{
	int bit;

	if(!dev->ctx_bitmap) return -1;

	down(&dev->struct_sem);
	bit = find_first_zero_bit( dev->ctx_bitmap, DRM_MAX_CTXBITMAP );
	if ( bit < DRM_MAX_CTXBITMAP ) {
		set_bit( bit, dev->ctx_bitmap );
	   	DRM_DEBUG( "drm_ctxbitmap_next bit : %d\n", bit );
		if((bit+1) > dev->max_context) {
			dev->max_context = (bit+1);
			if(dev->context_sareas) {
				drm_map_t **ctx_sareas;

				ctx_sareas = DRM(realloc)(dev->context_sareas,
						(dev->max_context - 1) * 
						sizeof(*dev->context_sareas),
						dev->max_context * 
						sizeof(*dev->context_sareas),
						DRM_MEM_MAPS);
				if(!ctx_sareas) {
					clear_bit(bit, dev->ctx_bitmap);
					up(&dev->struct_sem);
					return -1;
				}
				dev->context_sareas = ctx_sareas;
				dev->context_sareas[bit] = NULL;
			} else {
				/* max_context == 1 at this point */
				dev->context_sareas = DRM(alloc)(
						dev->max_context * 
						sizeof(*dev->context_sareas),
						DRM_MEM_MAPS);
				if(!dev->context_sareas) {
					clear_bit(bit, dev->ctx_bitmap);
					up(&dev->struct_sem);
					return -1;
				}
				dev->context_sareas[bit] = NULL;
			}
		}
		up(&dev->struct_sem);
		return bit;
	}
	up(&dev->struct_sem);
	return -1;
}

/**
 * Context bitmap initialization.
 *
 * \param dev DRM device.
 *
 * Allocates and initialize drm_device::ctx_bitmap and drm_device::context_sareas, while holding
 * the drm_device::struct_sem lock.
 */
int DRM(ctxbitmap_init)( drm_device_t *dev )
{
	int i;
   	int temp;

	down(&dev->struct_sem);
	dev->ctx_bitmap = (unsigned long *) DRM(alloc)( PAGE_SIZE,
							DRM_MEM_CTXBITMAP );
	if ( dev->ctx_bitmap == NULL ) {
		up(&dev->struct_sem);
		return -ENOMEM;
	}
	memset( (void *)dev->ctx_bitmap, 0, PAGE_SIZE );
	dev->context_sareas = NULL;
	dev->max_context = -1;
	up(&dev->struct_sem);

	for ( i = 0 ; i < DRM_RESERVED_CONTEXTS ; i++ ) {
		temp = DRM(ctxbitmap_next)( dev );
	   	DRM_DEBUG( "drm_ctxbitmap_init : %d\n", temp );
	}

	return 0;
}

/**
 * Context bitmap cleanup.
 *
 * \param dev DRM device.
 *
 * Frees drm_device::ctx_bitmap and drm_device::context_sareas, while holding
 * the drm_device::struct_sem lock.
 */
void DRM(ctxbitmap_cleanup)( drm_device_t *dev )
{
	down(&dev->struct_sem);
	if( dev->context_sareas ) DRM(free)( dev->context_sareas,
					     sizeof(*dev->context_sareas) * 
					     dev->max_context,
					     DRM_MEM_MAPS );
	DRM(free)( (void *)dev->ctx_bitmap, PAGE_SIZE, DRM_MEM_CTXBITMAP );
	up(&dev->struct_sem);
}

/*@}*/

/******************************************************************/
/** \name Per Context SAREA Support */
/*@{*/

/**
 * Get per-context SAREA.
 * 
 * \param inode device inode.
 * \param filp file pointer.
 * \param cmd command.
 * \param arg user argument pointing to a drm_ctx_priv_map structure.
 * \return zero on success or a negative number on failure.
 *
 * Gets the map from drm_device::context_sareas with the handle specified and
 * returns its handle.
 */
int DRM(getsareactx)(struct inode *inode, struct file *filp,
		     unsigned int cmd, unsigned long arg)
{
	drm_file_t	*priv	= filp->private_data;
	drm_device_t	*dev	= priv->dev;
	drm_ctx_priv_map_t __user *argp = (void __user *)arg;
	drm_ctx_priv_map_t request;
	drm_map_t *map;

	if (copy_from_user(&request, argp, sizeof(request)))
		return -EFAULT;

	down(&dev->struct_sem);
	if (dev->max_context < 0 || request.ctx_id >= (unsigned) dev->max_context) {
		up(&dev->struct_sem);
		return -EINVAL;
	}

	map = dev->context_sareas[request.ctx_id];
	up(&dev->struct_sem);

	request.handle = map->handle;
	if (copy_to_user(argp, &request, sizeof(request)))
		return -EFAULT;
	return 0;
}

/**
 * Set per-context SAREA.
 * 
 * \param inode device inode.
 * \param filp file pointer.
 * \param cmd command.
 * \param arg user argument pointing to a drm_ctx_priv_map structure.
 * \return zero on success or a negative number on failure.
 *
 * Searches the mapping specified in \p arg and update the entry in
 * drm_device::context_sareas with it.
 */
int DRM(setsareactx)(struct inode *inode, struct file *filp,
		     unsigned int cmd, unsigned long arg)
{
	drm_file_t	*priv	= filp->private_data;
	drm_device_t	*dev	= priv->dev;
	drm_ctx_priv_map_t request;
	drm_map_t *map = NULL;
	drm_map_list_t *r_list = NULL;
	struct list_head *list;

	if (copy_from_user(&request,
			   (drm_ctx_priv_map_t __user *)arg,
			   sizeof(request)))
		return -EFAULT;

	down(&dev->struct_sem);
	list_for_each(list, &dev->maplist->head) {
		r_list = list_entry(list, drm_map_list_t, head);
		if(r_list->map &&
		   r_list->map->handle == request.handle)
			goto found;
	}
bad:
	up(&dev->struct_sem);
	return -EINVAL;

found:
	map = r_list->map;
	if (!map) goto bad;
	if (dev->max_context < 0)
		goto bad;
	if (request.ctx_id >= (unsigned) dev->max_context)
		goto bad;
	dev->context_sareas[request.ctx_id] = map;
	up(&dev->struct_sem);
	return 0;
}

/*@}*/

/******************************************************************/
/** \name The actual DRM context handling routines */
/*@{*/

/**
 * Switch context.
 *
 * \param dev DRM device.
 * \param old old context handle.
 * \param new new context handle.
 * \return zero on success or a negative number on failure.
 *
 * Attempt to set drm_device::context_flag.
 */
int DRM(context_switch)( drm_device_t *dev, int old, int new )
{
        if ( test_and_set_bit( 0, &dev->context_flag ) ) {
                DRM_ERROR( "Reentering -- FIXME\n" );
                return -EBUSY;
        }


        DRM_DEBUG( "Context switch from %d to %d\n", old, new );

        if ( new == dev->last_context ) {
                clear_bit( 0, &dev->context_flag );
                return 0;
        }

        return 0;
}

/**
 * Complete context switch.
 *
 * \param dev DRM device.
 * \param new new context handle.
 * \return zero on success or a negative number on failure.
 *
 * Updates drm_device::last_context and drm_device::last_switch. Verifies the
 * hardware lock is held, clears the drm_device::context_flag and wakes up
 * drm_device::context_wait.
 */
int DRM(context_switch_complete)( drm_device_t *dev, int new )
{
        dev->last_context = new;  /* PRE/POST: This is the _only_ writer. */
        dev->last_switch  = jiffies;

        if ( !_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) ) {
                DRM_ERROR( "Lock isn't held after context switch\n" );
        }

				/* If a context switch is ever initiated
                                   when the kernel holds the lock, release
                                   that lock here. */
        clear_bit( 0, &dev->context_flag );
        wake_up( &dev->context_wait );

        return 0;
}

/**
 * Reserve contexts.
 *
 * \param inode device inode.
 * \param filp file pointer.
 * \param cmd command.
 * \param arg user argument pointing to a drm_ctx_res structure.
 * \return zero on success or a negative number on failure.
 */
int DRM(resctx)( struct inode *inode, struct file *filp,
		 unsigned int cmd, unsigned long arg )
{
	drm_ctx_res_t res;
	drm_ctx_t __user *argp = (void __user *)arg;
	drm_ctx_t ctx;
	int i;

	if ( copy_from_user( &res, argp, sizeof(res) ) )
		return -EFAULT;

	if ( res.count >= DRM_RESERVED_CONTEXTS ) {
		memset( &ctx, 0, sizeof(ctx) );
		for ( i = 0 ; i < DRM_RESERVED_CONTEXTS ; i++ ) {
			ctx.handle = i;
			if ( copy_to_user( &res.contexts[i],
					   &i, sizeof(i) ) )
				return -EFAULT;
		}
	}
	res.count = DRM_RESERVED_CONTEXTS;

	if ( copy_to_user( argp, &res, sizeof(res) ) )
		return -EFAULT;
	return 0;
}

/**
 * Add context.
 *
 * \param inode device inode.
 * \param filp file pointer.
 * \param cmd command.
 * \param arg user argument pointing to a drm_ctx structure.
 * \return zero on success or a negative number on failure.
 *
 * Get a new handle for the context and copy to userspace.
 */
int DRM(addctx)( struct inode *inode, struct file *filp,
		 unsigned int cmd, unsigned long arg )
{
	drm_file_t *priv = filp->private_data;
	drm_device_t *dev = priv->dev;
	drm_ctx_list_t * ctx_entry;
	drm_ctx_t __user *argp = (void __user *)arg;
	drm_ctx_t ctx;

	if ( copy_from_user( &ctx, argp, sizeof(ctx) ) )
		return -EFAULT;

	ctx.handle = DRM(ctxbitmap_next)( dev );
	if ( ctx.handle == DRM_KERNEL_CONTEXT ) {
				/* Skip kernel's context and get a new one. */
		ctx.handle = DRM(ctxbitmap_next)( dev );
	}
	DRM_DEBUG( "%d\n", ctx.handle );
	if ( ctx.handle == -1 ) {
		DRM_DEBUG( "Not enough free contexts.\n" );
				/* Should this return -EBUSY instead? */
		return -ENOMEM;
	}

	if ( ctx.handle != DRM_KERNEL_CONTEXT )
	{
		if (dev->fn_tbl.context_ctor)
			dev->fn_tbl.context_ctor(dev, ctx.handle);
	}

	ctx_entry = DRM(alloc)( sizeof(*ctx_entry), DRM_MEM_CTXLIST );
	if ( !ctx_entry ) {
		DRM_DEBUG("out of memory\n");
		return -ENOMEM;
	}

	INIT_LIST_HEAD( &ctx_entry->head );
	ctx_entry->handle = ctx.handle;
	ctx_entry->tag = priv;

	down( &dev->ctxlist_sem );
	list_add( &ctx_entry->head, &dev->ctxlist->head );
	++dev->ctx_count;
	up( &dev->ctxlist_sem );

	if ( copy_to_user( argp, &ctx, sizeof(ctx) ) )
		return -EFAULT;
	return 0;
}

int DRM(modctx)( struct inode *inode, struct file *filp,
		 unsigned int cmd, unsigned long arg )
{
	/* This does nothing */
	return 0;
}

/**
 * Get context.
 *
 * \param inode device inode.
 * \param filp file pointer.
 * \param cmd command.
 * \param arg user argument pointing to a drm_ctx structure.
 * \return zero on success or a negative number on failure.
 */
int DRM(getctx)( struct inode *inode, struct file *filp,
		 unsigned int cmd, unsigned long arg )
{
	drm_ctx_t __user *argp = (void __user *)arg;
	drm_ctx_t ctx;

	if ( copy_from_user( &ctx, argp, sizeof(ctx) ) )
		return -EFAULT;

	/* This is 0, because we don't handle any context flags */
	ctx.flags = 0;

	if ( copy_to_user( argp, &ctx, sizeof(ctx) ) )
		return -EFAULT;
	return 0;
}

/**
 * Switch context.
 *
 * \param inode device inode.
 * \param filp file pointer.
 * \param cmd command.
 * \param arg user argument pointing to a drm_ctx structure.
 * \return zero on success or a negative number on failure.
 *
 * Calls context_switch().
 */
int DRM(switchctx)( struct inode *inode, struct file *filp,
		    unsigned int cmd, unsigned long arg )
{
	drm_file_t *priv = filp->private_data;
	drm_device_t *dev = priv->dev;
	drm_ctx_t ctx;

	if ( copy_from_user( &ctx, (drm_ctx_t __user *)arg, sizeof(ctx) ) )
		return -EFAULT;

	DRM_DEBUG( "%d\n", ctx.handle );
	return DRM(context_switch)( dev, dev->last_context, ctx.handle );
}

/**
 * New context.
 *
 * \param inode device inode.
 * \param filp file pointer.
 * \param cmd command.
 * \param arg user argument pointing to a drm_ctx structure.
 * \return zero on success or a negative number on failure.
 *
 * Calls context_switch_complete().
 */
int DRM(newctx)( struct inode *inode, struct file *filp,
		 unsigned int cmd, unsigned long arg )
{
	drm_file_t *priv = filp->private_data;
	drm_device_t *dev = priv->dev;
	drm_ctx_t ctx;

	if ( copy_from_user( &ctx, (drm_ctx_t __user *)arg, sizeof(ctx) ) )
		return -EFAULT;

	DRM_DEBUG( "%d\n", ctx.handle );
	DRM(context_switch_complete)( dev, ctx.handle );

	return 0;
}

/**
 * Remove context.
 *
 * \param inode device inode.
 * \param filp file pointer.
 * \param cmd command.
 * \param arg user argument pointing to a drm_ctx structure.
 * \return zero on success or a negative number on failure.
 *
 * If not the special kernel context, calls ctxbitmap_free() to free the specified context.
 */
int DRM(rmctx)( struct inode *inode, struct file *filp,
		unsigned int cmd, unsigned long arg )
{
	drm_file_t *priv = filp->private_data;
	drm_device_t *dev = priv->dev;
	drm_ctx_t ctx;

	if ( copy_from_user( &ctx, (drm_ctx_t __user *)arg, sizeof(ctx) ) )
		return -EFAULT;

	DRM_DEBUG( "%d\n", ctx.handle );
	if ( ctx.handle == DRM_KERNEL_CONTEXT + 1 ) {
		priv->remove_auth_on_close = 1;
	}
	if ( ctx.handle != DRM_KERNEL_CONTEXT ) {
		if (dev->fn_tbl.context_dtor)
			dev->fn_tbl.context_dtor(dev, ctx.handle);
		DRM(ctxbitmap_free)( dev, ctx.handle );
	}

	down( &dev->ctxlist_sem );
	if ( !list_empty( &dev->ctxlist->head ) ) {
		drm_ctx_list_t *pos, *n;

		list_for_each_entry_safe( pos, n, &dev->ctxlist->head, head ) {
			if ( pos->handle == ctx.handle ) {
				list_del( &pos->head );
				DRM(free)( pos, sizeof(*pos), DRM_MEM_CTXLIST );
				--dev->ctx_count;
			}
		}
	}
	up( &dev->ctxlist_sem );

	return 0;
}

/*@}*/
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-08 20:19:21 +0000