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/*
* Copyright © 2012, 2013 Thierry Reding
* Copyright © 2013 Erik Faye-Lund
* Copyright © 2014 NVIDIA 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
* 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "util_math.h"
#include "private.h"
#define HOST1X_OPCODE_NONINCR(offset, count) \
((0x2 << 28) | (((offset) & 0xfff) << 16) | ((count) & 0xffff))
static inline unsigned int
drm_tegra_pushbuf_get_offset(struct drm_tegra_pushbuf *pushbuf, uint32_t *ptr)
{
return ptr - pushbuf->start;
}
void drm_tegra_pushbuf_free(struct drm_tegra_pushbuf *pushbuf)
{
if (pushbuf->start)
free(pushbuf->start);
free(pushbuf);
}
/**
* drm_tegra_pushbuf_begin() - prepare push buffer for a series of pushes
* @pushbuf: push buffer
* @words: maximum number of words in series of pushes to follow
*/
drm_public int
drm_tegra_pushbuf_begin(struct drm_tegra_pushbuf *pushbuf,
unsigned int words, uint32_t **ptrp)
{
struct drm_tegra_job *job = pushbuf->job;
unsigned long offset;
size_t size;
void *ptr;
if (pushbuf->ptr + words >= pushbuf->end) {
words = pushbuf->end - pushbuf->start + words;
size = ALIGN(words * 4, job->page_size);
offset = pushbuf->ptr - pushbuf->start;
ptr = realloc(pushbuf->start, size);
if (!ptr)
return -ENOMEM;
pushbuf->start = ptr;
pushbuf->end = pushbuf->start + size / 4;
pushbuf->ptr = pushbuf->start + offset;
}
if (ptrp)
*ptrp = pushbuf->ptr;
return 0;
}
drm_public int
drm_tegra_pushbuf_end(struct drm_tegra_pushbuf *pushbuf, uint32_t *ptr)
{
struct drm_tegra_submit_cmd *command;
command = drm_tegra_job_add_command(pushbuf->job,
DRM_TEGRA_SUBMIT_CMD_GATHER_UPTR,
0);
if (!command)
return -ENOMEM;
command->gather_uptr.words = ptr - pushbuf->start;
pushbuf->ptr = ptr;
return 0;
}
drm_public int
drm_tegra_pushbuf_wait(struct drm_tegra_pushbuf *pushbuf,
struct drm_tegra_syncpoint *syncpt,
uint32_t value)
{
struct drm_tegra_submit_cmd *command;
command = drm_tegra_job_add_command(pushbuf->job,
DRM_TEGRA_SUBMIT_CMD_WAIT_SYNCPT,
0);
if (!command)
return -ENOMEM;
command->wait_syncpt.id = syncpt->id;
command->wait_syncpt.value = value;
return 0;
}
drm_public int
drm_tegra_pushbuf_relocate(struct drm_tegra_pushbuf *pushbuf, uint32_t **ptrp,
struct drm_tegra_mapping *target,
unsigned long offset, unsigned int shift,
uint32_t flags)
{
struct drm_tegra_submit_buf *buffers, *buffer;
struct drm_tegra_job *job = pushbuf->job;
size_t size;
size = (job->num_buffers + 1) * sizeof(*buffer);
buffers = realloc(job->buffers, size);
if (!buffers)
return -ENOMEM;
buffer = &buffers[job->num_buffers];
memset(buffer, 0, sizeof(*buffer));
buffer->mapping = target->id;
buffer->flags = flags;
buffer->reloc.target_offset = offset;
buffer->reloc.gather_offset_words = drm_tegra_pushbuf_get_offset(pushbuf,
*ptrp);
buffer->reloc.shift = shift;
*(*ptrp)++ = 0xdeadbeef;
job->buffers = buffers;
job->num_buffers++;
return 0;
}
drm_public int
drm_tegra_pushbuf_sync(struct drm_tegra_pushbuf *pushbuf,
struct drm_tegra_syncpoint *syncpt,
unsigned int count)
{
struct drm_tegra_job *job = pushbuf->job;
job->syncpt.increments += count;
job->syncpt.id = syncpt->id;
return 0;
}
drm_public int
drm_tegra_pushbuf_sync_cond(struct drm_tegra_pushbuf *pushbuf, uint32_t **ptrp,
struct drm_tegra_syncpoint *syncpt,
enum drm_tegra_sync_cond cond)
{
struct drm_tegra_channel *channel = pushbuf->job->channel;
if (cond >= DRM_TEGRA_SYNC_COND_MAX)
return -EINVAL;
*(*ptrp)++ = HOST1X_OPCODE_NONINCR(0x0, 0x1);
*(*ptrp)++ = cond << channel->cond_shift | syncpt->id;
return drm_tegra_pushbuf_sync(pushbuf, syncpt, 1);
}
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