Jetpack/kernel/nvidia/drivers/video/tegra/host/vhost/vhost_channel.c

36 lines
1.1 KiB
C

/*
* Tegra Graphics Virtualization Host Channel operations for HOST1X
*
* Copyright (c) 2014-2015, NVIDIA Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "vhost.h"
#include "../host1x/host1x.h"
u32 vhost_channel_alloc_clientid(u64 handle, u32 id)
{
struct tegra_vhost_cmd_msg msg;
struct tegra_vhost_channel_clientid_params *p = &msg.params.clientid;
int err;
msg.cmd = TEGRA_VHOST_CMD_CHANNEL_ALLOC_CLIENTID;
msg.handle = handle;
p->moduleid = id;
err = vhost_sendrecv(&msg);
return (err || msg.ret) ? 0 : p->clientid;
}