/**************************************************************************
*
* Copyright 2006 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 "intel_context.h"
#include "intel_batchbuffer.h"
#include "intel_decode.h"
#include "intel_reg.h"
#include "intel_bufmgr.h"
#include "intel_buffers.h"
void
intel_batchbuffer_reset(struct intel_batchbuffer *batch)
{
struct intel_context *intel = batch->intel;
if (batch->buf != NULL) {
dri_bo_unreference(batch->buf);
batch->buf = NULL;
}
if (!batch->buffer)
batch->buffer = malloc (intel->maxBatchSize);
batch->buf = dri_bo_alloc(intel->bufmgr, "batchbuffer",
intel->maxBatchSize, 4096);
if (batch->buffer)
batch->map = batch->buffer;
else {
dri_bo_map(batch->buf, GL_TRUE);
batch->map = batch->buf->virtual;
}
batch->size = intel->maxBatchSize;
batch->ptr = batch->map;
batch->dirty_state = ~0;
}
struct intel_batchbuffer *
intel_batchbuffer_alloc(struct intel_context *intel)
{
struct intel_batchbuffer *batch = calloc(sizeof(*batch), 1);
batch->intel = intel;
intel_batchbuffer_reset(batch);
return batch;
}
void
intel_batchbuffer_free(struct intel_batchbuffer *batch)
{
if (batch->buffer)
free (batch->buffer);
else {
if (batch->map) {
dri_bo_unmap(batch->buf);
batch->map = NULL;
}
}
dri_bo_unreference(batch->buf);
batch->buf = NULL;
free(batch);
}
/* TODO: Push this whole function into bufmgr.
*/
static void
do_flush_locked(struct intel_batchbuffer *batch, GLuint used)
{
struct intel_context *intel = batch->intel;
int ret = 0;
int x_off = 0, y_off = 0;
if (batch->buffer)
dri_bo_subdata (batch->buf, 0, used, batch->buffer);
else
dri_bo_unmap(batch->buf);
batch->map = NULL;
batch->ptr = NULL;
if (!intel->no_hw)
dri_bo_exec(batch->buf, used, NULL, 0, (x_off & 0xffff) | (y_off << 16));
if (INTEL_DEBUG & DEBUG_BATCH) {
dri_bo_map(batch->buf, GL_FALSE);
intel_decode(batch->buf->virtual, used / 4, batch->buf->offset,
intel->intelScreen->deviceID);
dri_bo_unmap(batch->buf);
if (intel->vtbl.debug_batch != NULL)
intel->vtbl.debug_batch(intel);
}
if (ret != 0) {
exit(1);
}
intel->vtbl.new_batch(intel);
}
void
_intel_batchbuffer_flush(struct intel_batchbuffer *batch, const char *file,
int line)
{
struct intel_context *intel = batch->intel;
GLuint used = batch->ptr - batch->map;
if (!intel->using_dri2_swapbuffers &&
intel->first_post_swapbuffers_batch == NULL) {
intel->first_post_swapbuffers_batch = intel->batch->buf;
drm_intel_bo_reference(intel->first_post_swapbuffers_batch);
}
if (used == 0)
return;
if (INTEL_DEBUG & DEBUG_BATCH)
fprintf(stderr, "%s:%d: Batchbuffer flush with %db used\n", file, line,
used);
batch->reserved_space = 0;
/* Emit a flush if the bufmgr doesn't do it for us. */
if (intel->always_flush_cache) {
intel_batchbuffer_emit_mi_flush(batch);
used = batch->ptr - batch->map;
}
/* Round batchbuffer usage to 2 DWORDs. */
if ((used & 4) == 0) {
*(GLuint *) (batch->ptr) = 0; /* noop */
batch->ptr += 4;
used = batch->ptr - batch->map;
}
/* Mark the end of the buffer. */
*(GLuint *) (batch->ptr) = MI_BATCH_BUFFER_END;
batch->ptr += 4;
used = batch->ptr - batch->map;
assert (used <= batch->buf->size);
/* Workaround for recursive batchbuffer flushing: If the window is
* moved, we can get into a case where we try to flush during a
* flush. What happens is that when we try to grab the lock for
* the first flush, we detect that the window moved which then
* causes another flush (from the intel_draw_buffer() call in
* intelUpdatePageFlipping()). To work around this we reset the
* batchbuffer tail pointer before trying to get the lock. This
* prevent the nested buffer flush, but a better fix would be to
* avoid that in the first place. */
batch->ptr = batch->map;
if (intel->vtbl.finish_batch)
intel->vtbl.finish_batch(intel);
/* Check that we didn't just wrap our batchbuffer at a bad time. */
assert(!intel->no_batch_wrap);
batch->reserved_space = BATCH_RESERVED;
/* TODO: Just pass the relocation list and dma buffer up to the
* kernel.
*/
do_flush_locked(batch, used);
if (INTEL_DEBUG & DEBUG_SYNC) {
fprintf(stderr, "waiting for idle\n");
dri_bo_map(batch->buf, GL_TRUE);
dri_bo_unmap(batch->buf);
}
/* Reset the buffer:
*/
intel_batchbuffer_reset(batch);
}
/* This is the only way buffers get added to the validate list.
*/
GLboolean
intel_batchbuffer_emit_reloc(struct intel_batchbuffer *batch,
dri_bo *buffer,
uint32_t read_domains, uint32_t write_domain,
uint32_t delta)
{
int ret;
assert(delta < buffer->size);
if (batch->ptr - batch->map > batch->buf->size)
printf ("bad relocation ptr %p map %p offset %d size %lu\n",
batch->ptr, batch->map, batch->ptr - batch->map, batch->buf->size);
ret = dri_bo_emit_reloc(batch->buf, read_domains, write_domain,
delta, batch->ptr - batch->map, buffer);
/*
* Using the old buffer offset, write in what the right data would be, in case
* the buffer doesn't move and we can short-circuit the relocation processing
* in the kernel
*/
intel_batchbuffer_emit_dword (batch, buffer->offset + delta);
return GL_TRUE;
}
GLboolean
intel_batchbuffer_emit_reloc_fenced(struct intel_batchbuffer *batch,
drm_intel_bo *buffer,
uint32_t read_domains, uint32_t write_domain,
uint32_t delta)
{
int ret;
assert(delta < buffer->size);
if (batch->ptr - batch->map > batch->buf->size)
printf ("bad relocation ptr %p map %p offset %d size %lu\n",
batch->ptr, batch->map, batch->ptr - batch->map, batch->buf->size);
ret = drm_intel_bo_emit_reloc_fence(batch->buf, batch->ptr - batch->map,
buffer, delta,
read_domains, write_domain);
/*
* Using the old buffer offset, write in what the right data would
* be, in case the buffer doesn't move and we can short-circuit the
* relocation processing in the kernel
*/
intel_batchbuffer_emit_dword (batch, buffer->offset + delta);
return GL_TRUE;
}
void
intel_batchbuffer_data(struct intel_batchbuffer *batch,
const void *data, GLuint bytes)
{
assert((bytes & 3) == 0);
intel_batchbuffer_require_space(batch, bytes);
__memcpy(batch->ptr, data, bytes);
batch->ptr += bytes;
}
/* Emit a pipelined flush to either flush render and texture cache for
* reading from a FBO-drawn texture, or flush so that frontbuffer
* render appears on the screen in DRI1.
*
* This is also used for the always_flush_cache driconf debug option.
*/
void
intel_batchbuffer_emit_mi_flush(struct intel_batchbuffer *batch)
{
struct intel_context *intel = batch->intel;
if (intel->gen >= 4) {
BEGIN_BATCH(4);
OUT_BATCH(_3DSTATE_PIPE_CONTROL |
PIPE_CONTROL_INSTRUCTION_FLUSH |
PIPE_CONTROL_WRITE_FLUSH |
PIPE_CONTROL_NO_WRITE);
OUT_BATCH(0); /* write address */
OUT_BATCH(0); /* write data */
OUT_BATCH(0); /* write data */
ADVANCE_BATCH();
} else {
BEGIN_BATCH(1);
OUT_BATCH(MI_FLUSH);
ADVANCE_BATCH();
}
}