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Diffstat (limited to 'nx-X11/extras/drm/linux/drm_scatter.h')
-rw-r--r--nx-X11/extras/drm/linux/drm_scatter.h231
1 files changed, 0 insertions, 231 deletions
diff --git a/nx-X11/extras/drm/linux/drm_scatter.h b/nx-X11/extras/drm/linux/drm_scatter.h
deleted file mode 100644
index 436a0170e..000000000
--- a/nx-X11/extras/drm/linux/drm_scatter.h
+++ /dev/null
@@ -1,231 +0,0 @@
-/**
- * \file drm_scatter.h
- * IOCTLs to manage scatter/gather memory
- *
- * \author Gareth Hughes <gareth@valinux.com>
- */
-
-/*
- * Created: Mon Dec 18 23:20:54 2000 by gareth@valinux.com
- *
- * 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
- * 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.
- */
-
-#include <linux/config.h>
-#include <linux/vmalloc.h>
-#include "drmP.h"
-
-#define DEBUG_SCATTER 0
-
-void DRM(sg_cleanup)( drm_sg_mem_t *entry )
-{
- struct page *page;
- int i;
-
- for ( i = 0 ; i < entry->pages ; i++ ) {
- page = entry->pagelist[i];
- if ( page )
- ClearPageReserved( page );
- }
-
- vfree( entry->virtual );
-
- DRM(free)( entry->busaddr,
- entry->pages * sizeof(*entry->busaddr),
- DRM_MEM_PAGES );
- DRM(free)( entry->pagelist,
- entry->pages * sizeof(*entry->pagelist),
- DRM_MEM_PAGES );
- DRM(free)( entry,
- sizeof(*entry),
- DRM_MEM_SGLISTS );
-}
-
-int DRM(sg_alloc)( 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_scatter_gather_t __user *argp = (void __user *)arg;
- drm_scatter_gather_t request;
- drm_sg_mem_t *entry;
- unsigned long pages, i, j;
-
- DRM_DEBUG( "%s\n", __FUNCTION__ );
-
- if (!drm_core_check_feature(dev, DRIVER_SG))
- return -EINVAL;
-
- if ( dev->sg )
- return -EINVAL;
-
- if ( copy_from_user( &request, argp, sizeof(request) ) )
- return -EFAULT;
-
- entry = DRM(alloc)( sizeof(*entry), DRM_MEM_SGLISTS );
- if ( !entry )
- return -ENOMEM;
-
- memset( entry, 0, sizeof(*entry) );
-
- pages = (request.size + PAGE_SIZE - 1) / PAGE_SIZE;
- DRM_DEBUG( "sg size=%ld pages=%ld\n", request.size, pages );
-
- entry->pages = pages;
- entry->pagelist = DRM(alloc)( pages * sizeof(*entry->pagelist),
- DRM_MEM_PAGES );
- if ( !entry->pagelist ) {
- DRM(free)( entry, sizeof(*entry), DRM_MEM_SGLISTS );
- return -ENOMEM;
- }
-
- memset(entry->pagelist, 0, pages * sizeof(*entry->pagelist));
-
- entry->busaddr = DRM(alloc)( pages * sizeof(*entry->busaddr),
- DRM_MEM_PAGES );
- if ( !entry->busaddr ) {
- DRM(free)( entry->pagelist,
- entry->pages * sizeof(*entry->pagelist),
- DRM_MEM_PAGES );
- DRM(free)( entry,
- sizeof(*entry),
- DRM_MEM_SGLISTS );
- return -ENOMEM;
- }
- memset( (void *)entry->busaddr, 0, pages * sizeof(*entry->busaddr) );
-
- entry->virtual = vmalloc_32( pages << PAGE_SHIFT );
- if ( !entry->virtual ) {
- DRM(free)( entry->busaddr,
- entry->pages * sizeof(*entry->busaddr),
- DRM_MEM_PAGES );
- DRM(free)( entry->pagelist,
- entry->pages * sizeof(*entry->pagelist),
- DRM_MEM_PAGES );
- DRM(free)( entry,
- sizeof(*entry),
- DRM_MEM_SGLISTS );
- return -ENOMEM;
- }
-
- /* This also forces the mapping of COW pages, so our page list
- * will be valid. Please don't remove it...
- */
- memset( entry->virtual, 0, pages << PAGE_SHIFT );
-
- entry->handle = (unsigned long)entry->virtual;
-
- DRM_DEBUG( "sg alloc handle = %08lx\n", entry->handle );
- DRM_DEBUG( "sg alloc virtual = %p\n", entry->virtual );
-
- for ( i = entry->handle, j = 0 ; j < pages ; i += PAGE_SIZE, j++ ) {
- entry->pagelist[j] = vmalloc_to_page((void *)i);
- if (!entry->pagelist[j])
- goto failed;
- SetPageReserved(entry->pagelist[j]);
- }
-
- request.handle = entry->handle;
-
- if ( copy_to_user( argp, &request, sizeof(request) ) ) {
- DRM(sg_cleanup)( entry );
- return -EFAULT;
- }
-
- dev->sg = entry;
-
-#if DEBUG_SCATTER
- /* Verify that each page points to its virtual address, and vice
- * versa.
- */
- {
- int error = 0;
-
- for ( i = 0 ; i < pages ; i++ ) {
- unsigned long *tmp;
-
- tmp = page_address( entry->pagelist[i] );
- for ( j = 0 ;
- j < PAGE_SIZE / sizeof(unsigned long) ;
- j++, tmp++ ) {
- *tmp = 0xcafebabe;
- }
- tmp = (unsigned long *)((u8 *)entry->virtual +
- (PAGE_SIZE * i));
- for( j = 0 ;
- j < PAGE_SIZE / sizeof(unsigned long) ;
- j++, tmp++ ) {
- if ( *tmp != 0xcafebabe && error == 0 ) {
- error = 1;
- DRM_ERROR( "Scatter allocation error, "
- "pagelist does not match "
- "virtual mapping\n" );
- }
- }
- tmp = page_address( entry->pagelist[i] );
- for(j = 0 ;
- j < PAGE_SIZE / sizeof(unsigned long) ;
- j++, tmp++) {
- *tmp = 0;
- }
- }
- if (error == 0)
- DRM_ERROR( "Scatter allocation matches pagelist\n" );
- }
-#endif
-
- return 0;
-
- failed:
- DRM(sg_cleanup)( entry );
- return -ENOMEM;
-}
-
-int DRM(sg_free)( 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_scatter_gather_t request;
- drm_sg_mem_t *entry;
-
- if (!drm_core_check_feature(dev, DRIVER_SG))
- return -EINVAL;
-
- if ( copy_from_user( &request,
- (drm_scatter_gather_t __user *)arg,
- sizeof(request) ) )
- return -EFAULT;
-
- entry = dev->sg;
- dev->sg = NULL;
-
- if ( !entry || entry->handle != request.handle )
- return -EINVAL;
-
- DRM_DEBUG( "sg free virtual = %p\n", entry->virtual );
-
- DRM(sg_cleanup)( entry );
-
- return 0;
-}