diff options
Diffstat (limited to 'src/mesa/drivers/dri/common/dri_drmpool.c')
| -rw-r--r-- | src/mesa/drivers/dri/common/dri_drmpool.c | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/common/dri_drmpool.c b/src/mesa/drivers/dri/common/dri_drmpool.c new file mode 100644 index 0000000000..b5b324be50 --- /dev/null +++ b/src/mesa/drivers/dri/common/dri_drmpool.c @@ -0,0 +1,227 @@ +/************************************************************************** + * + * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA + * 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS 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. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * + **************************************************************************/ +/* + * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com> + */ + +#include <xf86drm.h> +#include <stdlib.h> +#include <unistd.h> +#include "dri_bufpool.h" + +/* + * Buffer pool implementation using DRM buffer objects as DRI buffer objects. + */ + +static void * +pool_create(struct _DriBufferPool *pool, + unsigned long size, unsigned flags, unsigned hint, + unsigned alignment) +{ + drmBO *buf = (drmBO *) malloc(sizeof(*buf)); + int ret; + unsigned pageSize = getpagesize(); + + if (!buf) + return NULL; + + if ((alignment > pageSize) && (alignment % pageSize)) { + return NULL; + } + + ret = drmBOCreate(pool->fd, 0, size, alignment / pageSize, + NULL, drm_bo_type_dc, + flags, hint, buf); + if (ret) { + free(buf); + return NULL; + } + + return (void *) buf; +} + +static int +pool_destroy(struct _DriBufferPool *pool, void *private) +{ + int ret; + drmBO *buf = (drmBO *) private; + ret = drmBODestroy(pool->fd, buf); + free(buf); + return ret; +} + +static int +pool_map(struct _DriBufferPool *pool, void *private, unsigned flags, + int hint, void **virtual) +{ + drmBO *buf = (drmBO *) private; + + return drmBOMap(pool->fd, buf, flags, hint, virtual); +} + +static int +pool_unmap(struct _DriBufferPool *pool, void *private) +{ + drmBO *buf = (drmBO *) private; + return drmBOUnmap(pool->fd, buf); +} + +static unsigned long +pool_offset(struct _DriBufferPool *pool, void *private) +{ + drmBO *buf = (drmBO *) private; + return buf->offset; +} + +static unsigned +pool_flags(struct _DriBufferPool *pool, void *private) +{ + drmBO *buf = (drmBO *) private; + return buf->flags; +} + + +static unsigned long +pool_size(struct _DriBufferPool *pool, void *private) +{ + drmBO *buf = (drmBO *) private; + return buf->size; +} + +static int +pool_fence(struct _DriBufferPool *pool, void *private, + struct _DriFenceObject *fence) +{ + /* + * Noop. The kernel handles all fencing. + */ + + return 0; +} + +static drmBO * +pool_kernel(struct _DriBufferPool *pool, void *private) +{ + return (drmBO *) private; +} + +static int +pool_waitIdle(struct _DriBufferPool *pool, void *private, int lazy) +{ + drmBO *buf = (drmBO *) private; + return drmBOWaitIdle(pool->fd, buf, (lazy) ? DRM_BO_HINT_WAIT_LAZY:0); +} + + +static void +pool_takedown(struct _DriBufferPool *pool) +{ + free(pool); +} + + +struct _DriBufferPool * +driDRMPoolInit(int fd) +{ + struct _DriBufferPool *pool; + + pool = (struct _DriBufferPool *) malloc(sizeof(*pool)); + + if (!pool) + return NULL; + + pool->fd = fd; + pool->map = &pool_map; + pool->unmap = &pool_unmap; + pool->destroy = &pool_destroy; + pool->offset = &pool_offset; + pool->flags = &pool_flags; + pool->size = &pool_size; + pool->create = &pool_create; + pool->fence = &pool_fence; + pool->kernel = &pool_kernel; + pool->validate = NULL; + pool->setstatic = NULL; + pool->waitIdle = &pool_waitIdle; + pool->takeDown = &pool_takedown; + pool->data = NULL; + return pool; +} + + +static void * +pool_setstatic(struct _DriBufferPool *pool, unsigned long offset, + unsigned long size, void *virtual, unsigned flags) +{ + drmBO *buf = (drmBO *) malloc(sizeof(*buf)); + int ret; + + if (!buf) + return NULL; + + ret = drmBOCreate(pool->fd, offset, size, 0, NULL, drm_bo_type_fake, + flags, 0, buf); + + if (ret) { + free(buf); + return NULL; + } + + buf->virtual = virtual; + + return (void *) buf; +} + + +struct _DriBufferPool * +driDRMStaticPoolInit(int fd) +{ + struct _DriBufferPool *pool; + + pool = (struct _DriBufferPool *) malloc(sizeof(*pool)); + + if (!pool) + return NULL; + + pool->fd = fd; + pool->map = &pool_map; + pool->unmap = &pool_unmap; + pool->destroy = &pool_destroy; + pool->offset = &pool_offset; + pool->flags = &pool_flags; + pool->size = &pool_size; + pool->create = NULL; + pool->fence = &pool_fence; + pool->kernel = &pool_kernel; + pool->validate = NULL; + pool->setstatic = &pool_setstatic; + pool->waitIdle = &pool_waitIdle; + pool->takeDown = &pool_takedown; + pool->data = NULL; + return pool; +} |