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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 "private.h"
#define HOST1X_OPCODE_NONINCR(offset, count) \
((0x2 << 28) | (((offset) & 0xfff) << 16) | ((count) & 0xffff))
int drm_tegra_pushbuf_queue(struct drm_tegra_pushbuf_private *pushbuf)
{
struct drm_tegra_cmdbuf cmdbuf;
int err;
if (!pushbuf || !pushbuf->bo)
return 0;
/* unmap buffer object since it won't be accessed anymore */
drm_tegra_bo_unmap(pushbuf->bo);
/* add buffer object as command buffers for this job */
memset(&cmdbuf, 0, sizeof(cmdbuf));
cmdbuf.words = pushbuf->base.ptr - pushbuf->start;
cmdbuf.handle = pushbuf->bo->handle;
cmdbuf.offset = 0;
err = drm_tegra_job_add_cmdbuf(pushbuf->job, &cmdbuf);
if (err < 0)
return err;
return 0;
}
static inline unsigned long
drm_tegra_pushbuf_get_offset(struct drm_tegra_pushbuf *pushbuf)
{
struct drm_tegra_pushbuf_private *priv = pushbuf_priv(pushbuf);
return (unsigned long)pushbuf->ptr - (unsigned long)priv->start;
}
int drm_tegra_pushbuf_new(struct drm_tegra_pushbuf **pushbufp,
struct drm_tegra_job *job)
{
struct drm_tegra_pushbuf_private *pushbuf;
pushbuf = calloc(1, sizeof(*pushbuf));
if (!pushbuf)
return -ENOMEM;
DRMINITLISTHEAD(&pushbuf->list);
DRMINITLISTHEAD(&pushbuf->bos);
pushbuf->job = job;
*pushbufp = &pushbuf->base;
DRMLISTADD(&pushbuf->list, &job->pushbufs);
job->pushbuf = pushbuf;
return 0;
}
int drm_tegra_pushbuf_free(struct drm_tegra_pushbuf *pushbuf)
{
struct drm_tegra_pushbuf_private *priv = pushbuf_priv(pushbuf);
struct drm_tegra_bo *bo, *tmp;
if (!pushbuf)
return -EINVAL;
drm_tegra_bo_unmap(priv->bo);
DRMLISTFOREACHENTRYSAFE(bo, tmp, &priv->bos, list)
drm_tegra_bo_unref(priv->bo);
DRMLISTDEL(&priv->list);
free(priv);
return 0;
}
/**
* drm_tegra_pushbuf_prepare() - prepare push buffer for a series of pushes
* @pushbuf: push buffer
* @words: maximum number of words in series of pushes to follow
*/
int drm_tegra_pushbuf_prepare(struct drm_tegra_pushbuf *pushbuf,
unsigned int words)
{
struct drm_tegra_pushbuf_private *priv = pushbuf_priv(pushbuf);
struct drm_tegra_channel *channel = priv->job->channel;
struct drm_tegra_bo *bo;
void *ptr;
int err;
if (priv->bo && (pushbuf->ptr + words < priv->end))
return 0;
/*
* Align to full pages, since buffer object allocations are page
* granular anyway.
*/
words = align(words, 1024);
err = drm_tegra_bo_new(&bo, channel->drm, 0, words * sizeof(uint32_t));
if (err < 0)
return err;
err = drm_tegra_bo_map(bo, &ptr);
if (err < 0) {
drm_tegra_bo_unref(bo);
return err;
}
/* queue current command stream buffer for submission */
err = drm_tegra_pushbuf_queue(priv);
if (err < 0) {
drm_tegra_bo_unmap(bo);
drm_tegra_bo_unref(bo);
return err;
}
DRMLISTADD(&bo->list, &priv->bos);
priv->start = priv->base.ptr = ptr;
priv->end = priv->start + bo->size;
priv->bo = bo;
return 0;
}
int drm_tegra_pushbuf_relocate(struct drm_tegra_pushbuf *pushbuf,
struct drm_tegra_bo *target,
unsigned long offset,
unsigned long shift)
{
struct drm_tegra_pushbuf_private *priv = pushbuf_priv(pushbuf);
struct drm_tegra_reloc reloc;
int err;
memset(&reloc, 0, sizeof(reloc));
reloc.cmdbuf.handle = priv->bo->handle;
reloc.cmdbuf.offset = drm_tegra_pushbuf_get_offset(pushbuf);
reloc.target.handle = target->handle;
reloc.target.offset = offset;
reloc.shift = shift;
err = drm_tegra_job_add_reloc(priv->job, &reloc);
if (err < 0)
return err;
*pushbuf->ptr++ = 0xdeadbeef;
return 0;
}
int drm_tegra_pushbuf_sync(struct drm_tegra_pushbuf *pushbuf,
enum drm_tegra_syncpt_cond cond)
{
struct drm_tegra_pushbuf_private *priv = pushbuf_priv(pushbuf);
if (cond >= DRM_TEGRA_SYNCPT_COND_MAX)
return -EINVAL;
*pushbuf->ptr++ = HOST1X_OPCODE_NONINCR(0x0, 0x1);
*pushbuf->ptr++ = cond << 8 | priv->job->syncpt;
priv->job->increments++;
return 0;
}
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