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e2be04c7f9
Many user space API headers have licensing information, which is either
incomplete, badly formatted or just a shorthand for referring to the
license under which the file is supposed to be. This makes it hard for
compliance tools to determine the correct license.
Update these files with an SPDX license identifier. The identifier was
chosen based on the license information in the file.
GPL/LGPL licensed headers get the matching GPL/LGPL SPDX license
identifier with the added 'WITH Linux-syscall-note' exception, which is
the officially assigned exception identifier for the kernel syscall
exception:
NOTE! This copyright does *not* cover user programs that use kernel
services by normal system calls - this is merely considered normal use
of the kernel, and does *not* fall under the heading of "derived work".
This exception makes it possible to include GPL headers into non GPL
code, without confusing license compliance tools.
Headers which have either explicit dual licensing or are just licensed
under a non GPL license are updated with the corresponding SPDX
identifier and the GPLv2 with syscall exception identifier. The format
is:
((GPL-2.0 WITH Linux-syscall-note) OR SPDX-ID-OF-OTHER-LICENSE)
SPDX license identifiers are a legally binding shorthand, which can be
used instead of the full boiler plate text. The update does not remove
existing license information as this has to be done on a case by case
basis and the copyright holders might have to be consulted. This will
happen in a separate step.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne. See the previous patch in this series for the
methodology of how this patch was researched.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
121 lines
3.6 KiB
C
121 lines
3.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* cmt-speech interface definitions
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*
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* Copyright (C) 2008,2009,2010 Nokia Corporation. All rights reserved.
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*
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* Contact: Kai Vehmanen <kai.vehmanen@nokia.com>
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* Original author: Peter Ujfalusi <peter.ujfalusi@nokia.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#ifndef _CS_PROTOCOL_H
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#define _CS_PROTOCOL_H
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#include <linux/types.h>
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#include <linux/ioctl.h>
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/* chardev parameters */
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#define CS_DEV_FILE_NAME "/dev/cmt_speech"
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/* user-space API versioning */
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#define CS_IF_VERSION 2
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/* APE kernel <-> user space messages */
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#define CS_CMD_SHIFT 28
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#define CS_DOMAIN_SHIFT 24
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#define CS_CMD_MASK 0xff000000
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#define CS_PARAM_MASK 0xffffff
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#define CS_CMD(id, dom) \
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(((id) << CS_CMD_SHIFT) | ((dom) << CS_DOMAIN_SHIFT))
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#define CS_ERROR CS_CMD(1, 0)
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#define CS_RX_DATA_RECEIVED CS_CMD(2, 0)
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#define CS_TX_DATA_READY CS_CMD(3, 0)
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#define CS_TX_DATA_SENT CS_CMD(4, 0)
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/* params to CS_ERROR indication */
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#define CS_ERR_PEER_RESET 0
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/* ioctl interface */
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/* parameters to CS_CONFIG_BUFS ioctl */
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#define CS_FEAT_TSTAMP_RX_CTRL (1 << 0)
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#define CS_FEAT_ROLLING_RX_COUNTER (2 << 0)
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/* parameters to CS_GET_STATE ioctl */
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#define CS_STATE_CLOSED 0
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#define CS_STATE_OPENED 1 /* resource allocated */
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#define CS_STATE_CONFIGURED 2 /* data path active */
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/* maximum number of TX/RX buffers */
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#define CS_MAX_BUFFERS_SHIFT 4
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#define CS_MAX_BUFFERS (1 << CS_MAX_BUFFERS_SHIFT)
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/* Parameters for setting up the data buffers */
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struct cs_buffer_config {
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__u32 rx_bufs; /* number of RX buffer slots */
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__u32 tx_bufs; /* number of TX buffer slots */
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__u32 buf_size; /* bytes */
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__u32 flags; /* see CS_FEAT_* */
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__u32 reserved[4];
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};
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/*
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* struct for monotonic timestamp taken when the
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* last control command was received
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*/
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struct cs_timestamp {
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__u32 tv_sec; /* seconds */
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__u32 tv_nsec; /* nanoseconds */
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};
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/*
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* Struct describing the layout and contents of the driver mmap area.
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* This information is meant as read-only information for the application.
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*/
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struct cs_mmap_config_block {
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__u32 reserved1;
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__u32 buf_size; /* 0=disabled, otherwise the transfer size */
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__u32 rx_bufs; /* # of RX buffers */
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__u32 tx_bufs; /* # of TX buffers */
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__u32 reserved2;
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/* array of offsets within the mmap area for each RX and TX buffer */
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__u32 rx_offsets[CS_MAX_BUFFERS];
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__u32 tx_offsets[CS_MAX_BUFFERS];
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__u32 rx_ptr;
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__u32 rx_ptr_boundary;
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__u32 reserved3[2];
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/* enabled with CS_FEAT_TSTAMP_RX_CTRL */
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struct cs_timestamp tstamp_rx_ctrl;
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};
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#define CS_IO_MAGIC 'C'
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#define CS_IOW(num, dtype) _IOW(CS_IO_MAGIC, num, dtype)
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#define CS_IOR(num, dtype) _IOR(CS_IO_MAGIC, num, dtype)
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#define CS_IOWR(num, dtype) _IOWR(CS_IO_MAGIC, num, dtype)
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#define CS_IO(num) _IO(CS_IO_MAGIC, num)
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#define CS_GET_STATE CS_IOR(21, unsigned int)
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#define CS_SET_WAKELINE CS_IOW(23, unsigned int)
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#define CS_GET_IF_VERSION CS_IOR(30, unsigned int)
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#define CS_CONFIG_BUFS CS_IOW(31, struct cs_buffer_config)
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#endif /* _CS_PROTOCOL_H */
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