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/**************************************************************************
*
* 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.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 int intelEmitIrqLocked(void)
{
drmI830IrqEmit ie;
int ret, seq;
ie.irq_seq = &seq;
ret = drmCommandWriteRead(xvmc_driver->fd, DRM_I830_IRQ_EMIT,
&ie, sizeof(ie));
if (ret) {
fprintf(stderr, "%s: drmI830IrqEmit: %d\n", __FUNCTION__, ret);
exit(1);
}
return seq;
}
static void intelWaitIrq(int seq)
{
int ret;
drmI830IrqWait iw;
iw.irq_seq = seq;
do {
ret =
drmCommandWrite(xvmc_driver->fd, DRM_I830_IRQ_WAIT, &iw,
sizeof(iw));
} while (ret == -EAGAIN || ret == -EINTR);
if (ret) {
fprintf(stderr, "%s: drmI830IrqWait: %d\n", __FUNCTION__, ret);
exit(1);
}
}
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)
{
int i;
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;
}
if (xvmc_driver->kernel_exec_fencing)
drm_intel_gem_bo_map_gtt(xvmc_driver->batch.buf);
else
drm_intel_bo_map(xvmc_driver->batch.buf, 1);
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)
{
if (xvmc_driver->kernel_exec_fencing)
drm_intel_gem_bo_unmap_gtt(xvmc_driver->batch.buf);
else
drm_intel_bo_unmap(xvmc_driver->batch.buf);
drm_intel_bo_unreference(xvmc_driver->batch.buf);
}
void intelFlushBatch(Bool refill)
{
i965_end_batch();
if (xvmc_driver->kernel_exec_fencing)
drm_intel_gem_bo_unmap_gtt(xvmc_driver->batch.buf);
else
drm_intel_bo_unmap(xvmc_driver->batch.buf);
drm_intel_bo_exec(xvmc_driver->batch.buf,
xvmc_driver->batch.ptr - xvmc_driver->batch.init_ptr,
0, 0, 0);
if (xvmc_driver == &i915_xvmc_mc_driver)
dri_bo_wait_rendering(xvmc_driver->batch.buf);
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");
}
if (xvmc_driver->kernel_exec_fencing)
drm_intel_gem_bo_map_gtt(xvmc_driver->batch.buf);
else
drm_intel_bo_map(xvmc_driver->batch.buf, 1);
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);
}
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