diff options
Diffstat (limited to 'xvmc/intel_batchbuffer.c')
| -rw-r--r-- | xvmc/intel_batchbuffer.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/xvmc/intel_batchbuffer.c b/xvmc/intel_batchbuffer.c new file mode 100644 index 00000000..3fa16bb4 --- /dev/null +++ b/xvmc/intel_batchbuffer.c @@ -0,0 +1,139 @@ +/************************************************************************** + * + * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. + * 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 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 NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS 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 <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <errno.h> +#include <signal.h> +#include <fcntl.h> +#include <dirent.h> +#include <string.h> +#include <assert.h> + +#include <sys/ioctl.h> +#include <X11/Xlibint.h> +#include <fourcc.h> +#include <X11/extensions/Xv.h> +#include <X11/extensions/Xvlib.h> +#include <X11/extensions/XvMC.h> +#include <X11/extensions/XvMClib.h> + +#include "intel_xvmc_private.h" +#include "intel_batchbuffer.h" +#include "brw_defines.h" +#include "brw_structs.h" +#define MI_BATCH_BUFFER_END (0xA << 23) +#define BATCH_SIZE 8*1024 /* one bo is allocated each time, so the size can be small */ + +static void i965_end_batch(void) +{ + unsigned int size = xvmc_driver->batch.ptr - + xvmc_driver->batch.init_ptr; + if ((size & 4) == 0) { + *(unsigned int *)xvmc_driver->batch.ptr = 0; + xvmc_driver->batch.ptr += 4; + } + *(unsigned int *)xvmc_driver->batch.ptr = MI_BATCH_BUFFER_END; + xvmc_driver->batch.ptr += 4; +} + +Bool intelInitBatchBuffer(void) +{ + if ((xvmc_driver->batch.buf = + drm_intel_bo_alloc(xvmc_driver->bufmgr, + "batch buffer", BATCH_SIZE, 0x1000)) == NULL) { + fprintf(stderr, "unable to alloc batch buffer\n"); + return False; + } + + drm_intel_gem_bo_map_gtt(xvmc_driver->batch.buf); + + xvmc_driver->batch.init_ptr = xvmc_driver->batch.buf->virtual; + xvmc_driver->batch.size = BATCH_SIZE; + xvmc_driver->batch.space = BATCH_SIZE; + xvmc_driver->batch.ptr = xvmc_driver->batch.init_ptr; + return True; +} + +void intelFiniBatchBuffer(void) +{ + drm_intel_gem_bo_unmap_gtt(xvmc_driver->batch.buf); + + drm_intel_bo_unreference(xvmc_driver->batch.buf); +} + +void intelFlushBatch(Bool refill) +{ + i965_end_batch(); + + drm_intel_gem_bo_unmap_gtt(xvmc_driver->batch.buf); + + drm_intel_bo_exec(xvmc_driver->batch.buf, + xvmc_driver->batch.ptr - xvmc_driver->batch.init_ptr, + 0, 0, 0); + + drm_intel_bo_unreference(xvmc_driver->batch.buf); + if ((xvmc_driver->batch.buf = + drm_intel_bo_alloc(xvmc_driver->bufmgr, + "batch buffer", BATCH_SIZE, 0x1000)) == NULL) { + fprintf(stderr, "unable to alloc batch buffer\n"); + } + + drm_intel_gem_bo_map_gtt(xvmc_driver->batch.buf); + + xvmc_driver->batch.init_ptr = xvmc_driver->batch.buf->virtual; + xvmc_driver->batch.size = BATCH_SIZE; + xvmc_driver->batch.space = BATCH_SIZE; + xvmc_driver->batch.ptr = xvmc_driver->batch.init_ptr; +} + +void intelBatchbufferRequireSpace(int size) +{ + assert(xvmc_driver->batch.ptr - xvmc_driver->batch.init_ptr + size < + xvmc_driver->batch.size - 8); + if (xvmc_driver->batch.ptr - xvmc_driver->batch.init_ptr + size + >= xvmc_driver->batch.size - 8) + intelFlushBatch(1); +} + +void intelBatchbufferData(const void *data, unsigned bytes, unsigned flags) +{ + intelBatchbufferRequireSpace(bytes); + memcpy(xvmc_driver->batch.ptr, data, bytes); + xvmc_driver->batch.ptr += bytes; + xvmc_driver->batch.space -= bytes; +} + +void intel_batch_emit_reloc(dri_bo * bo, uint32_t read_domain, + uint32_t write_domain, uint32_t delta, + unsigned char *ptr) +{ + drm_intel_bo_emit_reloc(xvmc_driver->batch.buf, + ptr - xvmc_driver->batch.init_ptr, bo, delta, + read_domain, write_domain); +} |