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/*
* © Copyright 2018 Alyssa Rosenzweig
* Copyright (C) 2019 Collabora, Ltd.
*
* 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, sublicense,
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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 <string.h>
#include <assert.h>
#include <panfrost-misc.h>
#include <panfrost-job.h>
#include "pan_context.h"
/* TODO: What does this actually have to be? */
#define ALIGNMENT 128
/* Transient command stream pooling: command stream uploads try to simply copy
* into whereever we left off. If there isn't space, we allocate a new entry
* into the pool and copy there */
struct panfrost_transfer
panfrost_allocate_transient(struct panfrost_batch *batch, size_t sz)
{
struct panfrost_screen *screen = pan_screen(batch->ctx->base.screen);
/* Pad the size */
sz = ALIGN_POT(sz, ALIGNMENT);
/* Find or create a suitable BO */
struct panfrost_bo *bo = NULL;
unsigned offset = 0;
bool fits_in_current = (batch->transient_offset + sz) < TRANSIENT_SLAB_SIZE;
if (likely(batch->transient_bo && fits_in_current)) {
/* We can reuse the current BO, so get it */
bo = batch->transient_bo;
/* Use the specified offset */
offset = batch->transient_offset;
batch->transient_offset = offset + sz;
} else {
size_t bo_sz = sz < TRANSIENT_SLAB_SIZE ?
TRANSIENT_SLAB_SIZE : ALIGN_POT(sz, 4096);
/* We can't reuse the current BO, but we can create a new one. */
bo = panfrost_bo_create(screen, bo_sz, 0);
panfrost_batch_add_bo(batch, bo);
/* Creating a BO adds a reference, and then the job adds a
* second one. So we need to pop back one reference */
panfrost_bo_unreference(&screen->base, bo);
if (sz < TRANSIENT_SLAB_SIZE) {
batch->transient_bo = bo;
batch->transient_offset = offset + sz;
}
}
struct panfrost_transfer ret = {
.cpu = bo->cpu + offset,
.gpu = bo->gpu + offset,
};
return ret;
}
mali_ptr
panfrost_upload_transient(struct panfrost_batch *batch, const void *data,
size_t sz)
{
struct panfrost_transfer transfer = panfrost_allocate_transient(batch, sz);
memcpy(transfer.cpu, data, sz);
return transfer.gpu;
}
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