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/*
* Copyright © 2012, 2013 Thierry Reding
* Copyright © 2013 Erik Faye-Lund
* Copyright © 2014-2021 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 <string.h>
#include <sys/ioctl.h>
#include "private.h"
drm_public int
drm_tegra_channel_open(struct drm_tegra *drm,
enum drm_tegra_class client,
struct drm_tegra_channel **channelp)
{
struct drm_tegra_channel_open args;
struct drm_tegra_channel *channel;
enum host1x_class class;
int err;
switch (client) {
case DRM_TEGRA_HOST1X:
class = HOST1X_CLASS_HOST1X;
break;
case DRM_TEGRA_GR2D:
class = HOST1X_CLASS_GR2D;
break;
case DRM_TEGRA_GR3D:
class = HOST1X_CLASS_GR3D;
break;
case DRM_TEGRA_VIC:
class = HOST1X_CLASS_VIC;
break;
default:
return -EINVAL;
}
channel = calloc(1, sizeof(*channel));
if (!channel)
return -ENOMEM;
channel->drm = drm;
memset(&args, 0, sizeof(args));
args.host1x_class = class;
err = ioctl(drm->fd, DRM_IOCTL_TEGRA_CHANNEL_OPEN, &args);
if (err < 0) {
free(channel);
return -errno;
}
channel->context = args.context;
channel->version = args.version;
channel->capabilities = args.capabilities;
channel->class = class;
switch (channel->version) {
case 0x20:
case 0x30:
case 0x35:
case 0x40:
case 0x21:
channel->cond_shift = 8;
break;
case 0x18:
case 0x19:
channel->cond_shift = 10;
break;
default:
return -ENOTSUP;
}
*channelp = channel;
return 0;
}
drm_public int drm_tegra_channel_close(struct drm_tegra_channel *channel)
{
struct drm_tegra_channel_close args;
struct drm_tegra *drm;
int err;
if (!channel)
return -EINVAL;
drm = channel->drm;
memset(&args, 0, sizeof(args));
args.context = channel->context;
err = ioctl(drm->fd, DRM_IOCTL_TEGRA_CHANNEL_CLOSE, &args);
if (err < 0)
return -errno;
free(channel);
return 0;
}
drm_public unsigned int
drm_tegra_channel_get_version(struct drm_tegra_channel *channel)
{
return channel->version;
}
drm_public int
drm_tegra_channel_map(struct drm_tegra_channel *channel,
struct drm_tegra_bo *bo, uint32_t flags,
struct drm_tegra_mapping **mapp)
{
struct drm_tegra *drm = channel->drm;
struct drm_tegra_channel_map args;
struct drm_tegra_mapping *map;
int err;
if (!drm || !bo || !mapp)
return -EINVAL;
map = calloc(1, sizeof(*map));
if (!map)
return -ENOMEM;
memset(&args, 0, sizeof(args));
args.context = channel->context;
args.handle = bo->handle;
args.flags = flags;
err = ioctl(drm->fd, DRM_IOCTL_TEGRA_CHANNEL_MAP, &args);
if (err < 0) {
free(map);
return -errno;
}
map->channel = channel;
map->id = args.mapping;
*mapp = map;
return 0;
}
drm_public int
drm_tegra_channel_unmap(struct drm_tegra_mapping *map)
{
struct drm_tegra_channel *channel = map->channel;
struct drm_tegra *drm = channel->drm;
struct drm_tegra_channel_unmap args;
int err;
if (!channel || !map)
return -EINVAL;
memset(&args, 0, sizeof(args));
args.context = channel->context;
args.mapping = map->id;
err = ioctl(drm->fd, DRM_IOCTL_TEGRA_CHANNEL_UNMAP, &args);
if (err < 0)
return -errno;
free(map);
return 0;
}
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