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authorEric Anholt <anholt@freebsd.org>2005-08-16 17:20:18 +0000
committerEric Anholt <anholt@freebsd.org>2005-08-16 17:20:18 +0000
commit91c9c847299a1f27c92f8663902fcee72a65f9e4 (patch)
tree83096daf7e42ac8576cbb148131dbfad21dfe72f /bsd/drm_context.h
parent7af0186f4ccef285c2158770781ebfc3a26ddd66 (diff)
Remove the long-stale BSD non-core bits.
Prodded by: CVS breakage resulting in complaints about this directory.
Diffstat (limited to 'bsd/drm_context.h')
-rw-r--r--bsd/drm_context.h349
1 files changed, 0 insertions, 349 deletions
diff --git a/bsd/drm_context.h b/bsd/drm_context.h
deleted file mode 100644
index aa655297..00000000
--- a/bsd/drm_context.h
+++ /dev/null
@@ -1,349 +0,0 @@
-/* drm_context.h -- IOCTLs for generic contexts -*- linux-c -*-
- * 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.
- *
- * Authors:
- * Rickard E. (Rik) Faith <faith@valinux.com>
- * Gareth Hughes <gareth@valinux.com>
- *
- */
-
-#include "drmP.h"
-
-#if !__HAVE_CTX_BITMAP
-#error "__HAVE_CTX_BITMAP must be defined"
-#endif
-
-/* ================================================================
- * Context bitmap support
- */
-
-void DRM(ctxbitmap_free)( drm_device_t *dev, int ctx_handle )
-{
- if (ctx_handle < 0 || ctx_handle >= DRM_MAX_CTXBITMAP ||
- dev->ctx_bitmap == NULL) {
- DRM_ERROR("Attempt to free invalid context handle: %d\n",
- ctx_handle);
- return;
- }
-
- DRM_LOCK();
- clear_bit(ctx_handle, dev->ctx_bitmap);
- dev->context_sareas[ctx_handle] = NULL;
- DRM_UNLOCK();
- return;
-}
-
-int DRM(ctxbitmap_next)( drm_device_t *dev )
-{
- int bit;
-
- if (dev->ctx_bitmap == NULL)
- return -1;
-
- DRM_LOCK();
- bit = find_first_zero_bit( dev->ctx_bitmap, DRM_MAX_CTXBITMAP );
- if (bit >= DRM_MAX_CTXBITMAP) {
- DRM_UNLOCK();
- return -1;
- }
-
- 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 != NULL) {
- drm_local_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 == NULL) {
- clear_bit(bit, dev->ctx_bitmap);
- DRM_UNLOCK();
- 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 == NULL) {
- clear_bit(bit, dev->ctx_bitmap);
- DRM_UNLOCK();
- return -1;
- }
- dev->context_sareas[bit] = NULL;
- }
- }
- DRM_UNLOCK();
- return bit;
-}
-
-int DRM(ctxbitmap_init)( drm_device_t *dev )
-{
- int i;
- int temp;
-
- DRM_LOCK();
- dev->ctx_bitmap = (atomic_t *)DRM(calloc)(1, PAGE_SIZE,
- DRM_MEM_CTXBITMAP);
- if ( dev->ctx_bitmap == NULL ) {
- DRM_UNLOCK();
- return DRM_ERR(ENOMEM);
- }
- dev->context_sareas = NULL;
- dev->max_context = -1;
- DRM_UNLOCK();
-
- for ( i = 0 ; i < DRM_RESERVED_CONTEXTS ; i++ ) {
- temp = DRM(ctxbitmap_next)( dev );
- DRM_DEBUG( "drm_ctxbitmap_init : %d\n", temp );
- }
-
- return 0;
-}
-
-void DRM(ctxbitmap_cleanup)( drm_device_t *dev )
-{
- DRM_LOCK();
- if (dev->context_sareas != NULL)
- 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 );
- DRM_UNLOCK();
-}
-
-/* ================================================================
- * Per Context SAREA Support
- */
-
-int DRM(getsareactx)( DRM_IOCTL_ARGS )
-{
- DRM_DEVICE;
- drm_ctx_priv_map_t request;
- drm_local_map_t *map;
-
- DRM_COPY_FROM_USER_IOCTL( request, (drm_ctx_priv_map_t *)data,
- sizeof(request) );
-
- DRM_LOCK();
- if (dev->max_context < 0 || request.ctx_id >= (unsigned) dev->max_context) {
- DRM_UNLOCK();
- return DRM_ERR(EINVAL);
- }
-
- map = dev->context_sareas[request.ctx_id];
- DRM_UNLOCK();
-
- request.handle = map->handle;
-
- DRM_COPY_TO_USER_IOCTL( (drm_ctx_priv_map_t *)data, request, sizeof(request) );
-
- return 0;
-}
-
-int DRM(setsareactx)( DRM_IOCTL_ARGS )
-{
- DRM_DEVICE;
- drm_ctx_priv_map_t request;
- drm_local_map_t *map = NULL;
- drm_map_list_entry_t *list;
-
- DRM_COPY_FROM_USER_IOCTL( request, (drm_ctx_priv_map_t *)data,
- sizeof(request) );
-
- DRM_LOCK();
- TAILQ_FOREACH(list, dev->maplist, link) {
- map=list->map;
- if (map->handle == request.handle) {
- if (dev->max_context < 0)
- goto bad;
- if (request.ctx_id >= (unsigned) dev->max_context)
- goto bad;
- dev->context_sareas[request.ctx_id] = map;
- DRM_UNLOCK();
- return 0;
- }
- }
-
-bad:
- DRM_UNLOCK();
- return DRM_ERR(EINVAL);
-}
-
-/* ================================================================
- * The actual DRM context handling routines
- */
-
-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 DRM_ERR(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;
-}
-
-int DRM(context_switch_complete)( drm_device_t *dev, int new )
-{
- dev->last_context = new; /* PRE/POST: This is the _only_ writer. */
-
- 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 );
-
- return 0;
-}
-
-int DRM(resctx)( DRM_IOCTL_ARGS )
-{
- drm_ctx_res_t res;
- drm_ctx_t ctx;
- int i;
-
- DRM_COPY_FROM_USER_IOCTL( res, (drm_ctx_res_t *)data, sizeof(res) );
-
- if ( res.count >= DRM_RESERVED_CONTEXTS ) {
- bzero(&ctx, sizeof(ctx));
- for ( i = 0 ; i < DRM_RESERVED_CONTEXTS ; i++ ) {
- ctx.handle = i;
- if ( DRM_COPY_TO_USER( &res.contexts[i],
- &i, sizeof(i) ) )
- return DRM_ERR(EFAULT);
- }
- }
- res.count = DRM_RESERVED_CONTEXTS;
-
- DRM_COPY_TO_USER_IOCTL( (drm_ctx_res_t *)data, res, sizeof(res) );
-
- return 0;
-}
-
-int DRM(addctx)( DRM_IOCTL_ARGS )
-{
- DRM_DEVICE;
- drm_ctx_t ctx;
-
- DRM_COPY_FROM_USER_IOCTL( ctx, (drm_ctx_t *)data, sizeof(ctx) );
-
- 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 DRM_ERR(ENOMEM);
- }
-
- if ( dev->fn_tbl.context_ctor && ctx.handle != DRM_KERNEL_CONTEXT )
- dev->fn_tbl.context_ctor(dev, ctx.handle);
-
- DRM_COPY_TO_USER_IOCTL( (drm_ctx_t *)data, ctx, sizeof(ctx) );
-
- return 0;
-}
-
-int DRM(modctx)( DRM_IOCTL_ARGS )
-{
- /* This does nothing */
- return 0;
-}
-
-int DRM(getctx)( DRM_IOCTL_ARGS )
-{
- drm_ctx_t ctx;
-
- DRM_COPY_FROM_USER_IOCTL( ctx, (drm_ctx_t *)data, sizeof(ctx) );
-
- /* This is 0, because we don't handle any context flags */
- ctx.flags = 0;
-
- DRM_COPY_TO_USER_IOCTL( (drm_ctx_t *)data, ctx, sizeof(ctx) );
-
- return 0;
-}
-
-int DRM(switchctx)( DRM_IOCTL_ARGS )
-{
- DRM_DEVICE;
- drm_ctx_t ctx;
-
- DRM_COPY_FROM_USER_IOCTL( ctx, (drm_ctx_t *)data, sizeof(ctx) );
-
- DRM_DEBUG( "%d\n", ctx.handle );
- return DRM(context_switch)( dev, dev->last_context, ctx.handle );
-}
-
-int DRM(newctx)( DRM_IOCTL_ARGS )
-{
- DRM_DEVICE;
- drm_ctx_t ctx;
-
- DRM_COPY_FROM_USER_IOCTL( ctx, (drm_ctx_t *)data, sizeof(ctx) );
-
- DRM_DEBUG( "%d\n", ctx.handle );
- DRM(context_switch_complete)( dev, ctx.handle );
-
- return 0;
-}
-
-int DRM(rmctx)( DRM_IOCTL_ARGS )
-{
- DRM_DEVICE;
- drm_ctx_t ctx;
-
- DRM_COPY_FROM_USER_IOCTL( ctx, (drm_ctx_t *)data, sizeof(ctx) );
-
- DRM_DEBUG( "%d\n", ctx.handle );
- 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 );
- }
-
- return 0;
-}