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/*
* Copyright © 2018 Intel Corporation
*
* 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
* on 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
* THE AUTHOR(S) AND/OR THEIR 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 <stdlib.h>
#include "util/u_math.h"
#include "iris_binder.h"
#include "iris_bufmgr.h"
/* 64kb */
#define BINDER_SIZE (64 * 1024)
void *
iris_binder_reserve(struct iris_binder *binder, unsigned size,
uint32_t *out_offset)
{
/* XXX: if we ever make this allocate a new BO, then make binder_reserve
* return the BO, so at least verify use_pinned_bo gets the right one
*/
/* XXX: Implement a real ringbuffer, for now just croak if run out */
assert(size > 0);
assert(binder->insert_point + size <= BINDER_SIZE);
assert((binder->insert_point % 64) == 0);
*out_offset = binder->insert_point;
binder->insert_point = align(binder->insert_point + size, 64);
return binder->map + *out_offset;
}
void
iris_init_binder(struct iris_binder *binder, struct iris_bufmgr *bufmgr)
{
binder->bo =
iris_bo_alloc(bufmgr, "binder", BINDER_SIZE, IRIS_MEMZONE_BINDER);
binder->map = iris_bo_map(NULL, binder->bo, MAP_WRITE);
binder->insert_point = 64; // XXX: avoid null pointer, it confuses tools
}
void
iris_destroy_binder(struct iris_binder *binder)
{
iris_bo_unreference(binder->bo);
}
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