diff options
Diffstat (limited to 'nx-X11/extras/drm/bsd-core/drm_scatter.c')
-rw-r--r-- | nx-X11/extras/drm/bsd-core/drm_scatter.c | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/nx-X11/extras/drm/bsd-core/drm_scatter.c b/nx-X11/extras/drm/bsd-core/drm_scatter.c deleted file mode 100644 index c26a38027..000000000 --- a/nx-X11/extras/drm/bsd-core/drm_scatter.c +++ /dev/null @@ -1,128 +0,0 @@ -/* drm_scatter.h -- IOCTLs to manage scatter/gather memory -*- linux-c -*- - * 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. - * - * Authors: - * Gareth Hughes <gareth@valinux.com> - * Eric Anholt <anholt@FreeBSD.org> - * - */ - -#include "drmP.h" - -#define DEBUG_SCATTER 0 - -void drm_sg_cleanup(drm_sg_mem_t *entry) -{ - free((void *)entry->handle, M_DRM); - free(entry->busaddr, M_DRM); - free(entry, M_DRM); -} - -int drm_sg_alloc(DRM_IOCTL_ARGS) -{ - DRM_DEVICE; - drm_scatter_gather_t request; - drm_sg_mem_t *entry; - unsigned long pages; - int i; - - DRM_DEBUG( "%s\n", __FUNCTION__ ); - - if ( dev->sg ) - return EINVAL; - - DRM_COPY_FROM_USER_IOCTL(request, (drm_scatter_gather_t *)data, - sizeof(request) ); - - entry = malloc(sizeof(*entry), M_DRM, M_WAITOK | M_ZERO); - if ( !entry ) - return ENOMEM; - - pages = round_page(request.size) / PAGE_SIZE; - DRM_DEBUG( "sg size=%ld pages=%ld\n", request.size, pages ); - - entry->pages = pages; - - entry->busaddr = malloc(pages * sizeof(*entry->busaddr), M_DRM, - M_WAITOK | M_ZERO); - if ( !entry->busaddr ) { - drm_sg_cleanup(entry); - return ENOMEM; - } - - entry->handle = (long)malloc(pages << PAGE_SHIFT, M_DRM, - M_WAITOK | M_ZERO); - if (entry->handle == 0) { - drm_sg_cleanup(entry); - return ENOMEM; - } - - for (i = 0; i < pages; i++) { - entry->busaddr[i] = vtophys(entry->handle + i * PAGE_SIZE); - } - - DRM_DEBUG( "sg alloc handle = %08lx\n", entry->handle ); - - request.handle = entry->handle; - - DRM_COPY_TO_USER_IOCTL( (drm_scatter_gather_t *)data, - request, - sizeof(request) ); - - DRM_LOCK(); - if (dev->sg) { - DRM_UNLOCK(); - drm_sg_cleanup(entry); - return EINVAL; - } - dev->sg = entry; - DRM_UNLOCK(); - - return 0; -} - -int drm_sg_free(DRM_IOCTL_ARGS) -{ - DRM_DEVICE; - drm_scatter_gather_t request; - drm_sg_mem_t *entry; - - DRM_COPY_FROM_USER_IOCTL( request, (drm_scatter_gather_t *)data, - sizeof(request) ); - - DRM_LOCK(); - entry = dev->sg; - dev->sg = NULL; - DRM_UNLOCK(); - - if ( !entry || entry->handle != request.handle ) - return EINVAL; - - DRM_DEBUG( "sg free virtual = 0x%lx\n", entry->handle ); - - drm_sg_cleanup(entry); - - return 0; -} |