diff options
Diffstat (limited to 'bsd/drm_scatter.h')
| -rw-r--r-- | bsd/drm_scatter.h | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/bsd/drm_scatter.h b/bsd/drm_scatter.h deleted file mode 100644 index 13213227..00000000 --- a/bsd/drm_scatter.h +++ /dev/null @@ -1,151 +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 - -#if __REALLY_HAVE_SG - -void DRM(sg_cleanup)( drm_sg_mem_t *entry ) -{ - free( entry->virtual, DRM(M_DRM) ); - - DRM(free)( entry->busaddr, - entry->pages * sizeof(*entry->busaddr), - DRM_MEM_PAGES ); - DRM(free)( entry, - sizeof(*entry), - DRM_MEM_SGLISTS ); -} - -int DRM(sg_alloc)( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_scatter_gather_t request; - drm_sg_mem_t *entry; - unsigned long pages; - - DRM_DEBUG( "%s\n", __FUNCTION__ ); - - if ( dev->sg ) - return EINVAL; - - DRM_COPY_FROM_USER_IOCTL(request, (drm_scatter_gather_t *)data, - sizeof(request) ); - - entry = DRM(alloc)( sizeof(*entry), DRM_MEM_SGLISTS ); - if ( !entry ) - return ENOMEM; - - bzero( entry, sizeof(*entry) ); - - pages = round_page(request.size) / PAGE_SIZE; - DRM_DEBUG( "sg size=%ld pages=%ld\n", request.size, pages ); - - entry->pages = pages; - - entry->busaddr = DRM(alloc)( pages * sizeof(*entry->busaddr), - DRM_MEM_PAGES ); - if ( !entry->busaddr ) { - DRM(free)( entry, - sizeof(*entry), - DRM_MEM_SGLISTS ); - return ENOMEM; - } - bzero( (void *)entry->busaddr, pages * sizeof(*entry->busaddr) ); - - entry->virtual = malloc( pages << PAGE_SHIFT, DRM(M_DRM), M_WAITOK ); - if ( !entry->virtual ) { - DRM(free)( entry->busaddr, - entry->pages * sizeof(*entry->busaddr), - DRM_MEM_PAGES ); - DRM(free)( entry, - sizeof(*entry), - DRM_MEM_SGLISTS ); - return ENOMEM; - } - - bzero( entry->virtual, 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 ); - - request.handle = entry->handle; - - DRM_COPY_TO_USER_IOCTL( (drm_scatter_gather_t *)data, - request, - sizeof(request) ); - - dev->sg = entry; - - return 0; - - DRM(sg_cleanup)( entry ); - return ENOMEM; -} - -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) ); - - 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; -} - -#else /* __REALLY_HAVE_SG */ - -int DRM(sg_alloc)( DRM_IOCTL_ARGS ) -{ - return DRM_ERR(EINVAL); -} -int DRM(sg_free)( DRM_IOCTL_ARGS ) -{ - return DRM_ERR(EINVAL); -} - -#endif |