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/* sdi.h
*
* Shared header file for the Linux user-space API for
* Linear Systems Ltd. SMPTE 259M-C interface boards.
*
* Copyright (C) 2004-2009 Linear Systems Ltd.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of Linear Systems Ltd. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY LINEAR SYSTEMS LTD. "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL LINEAR SYSTEMS LTD. OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Linear Systems can be contacted at <http://www.linsys.ca/>.
*
*/
#ifndef _SDI_H
#define _SDI_H
/* Driver info */
#define SDI_DRIVER_NAME "sdi"
#define SDI_MAJOR 121 /* Set to 0 for dynamic allocation.
* Otherwise, 121 is available.
* See /usr/src/linux/Documentation/devices.txt */
#define SDI_TX_BUFFERS_MIN 2 /* This must be at least 2 */
/* The minimum transmit buffer size must be positive, divisible by 4,
* and large enough that the buffers aren't transferred to the onboard FIFOs
* too quickly for the machine to handle the interrupts.
* This is especially a problem at startup, when the FIFOs are empty.
* Relevant factors include onboard FIFO size, PCI bus throughput,
* processor speed, and interrupt latency. */
#define SDI_TX_BUFSIZE_MIN 1024
#define SDI_RX_BUFFERS_MIN 2 /* This must be at least 2 */
#define SDI_RX_BUFSIZE_MIN 8 /* This must be positive and divisible by 4 */
#define SDI_TX_BUFFERS 25 /* This must be at least 2 */
#define SDI_TX_BUFSIZE 1235520 /* This must be positive and divisible by 4 */
#define SDI_RX_BUFFERS 25 /* This must be at least 2 */
#define SDI_RX_BUFSIZE 1235520 /* This must be positive and divisible by 4 */
/* Ioctl () definitions */
#define SDI_IOC_MAGIC '=' /* This ioctl magic number is currently free. See
* /usr/src/linux/Documentation/ioctl-number.txt */
#define SDI_IOC_TXGETCAP _IOR(SDI_IOC_MAGIC, 1, unsigned int)
#define SDI_IOC_TXGETEVENTS _IOR(SDI_IOC_MAGIC, 2, unsigned int)
#define SDI_IOC_TXGETBUFLEVEL _IOR(SDI_IOC_MAGIC, 3, unsigned int)
#define SDI_IOC_TXGETTXD _IOR(SDI_IOC_MAGIC, 4, int)
#define SDI_IOC_RXGETCAP _IOR(SDI_IOC_MAGIC, 65, unsigned int)
#define SDI_IOC_RXGETEVENTS _IOR(SDI_IOC_MAGIC, 66, unsigned int)
#define SDI_IOC_RXGETBUFLEVEL _IOR(SDI_IOC_MAGIC, 67, unsigned int)
#define SDI_IOC_RXGETCARRIER _IOR(SDI_IOC_MAGIC, 68, int)
#define SDI_IOC_RXGETSTATUS _IOR(SDI_IOC_MAGIC, 69, int)
#define SDI_IOC_GETID _IOR(SDI_IOC_MAGIC, 129, unsigned int)
#define SDI_IOC_GETVERSION _IOR(SDI_IOC_MAGIC, 130, unsigned int)
#define SDI_IOC_QBUF_DEPRECATED _IOR(SDI_IOC_MAGIC, 131, unsigned int)
#define SDI_IOC_QBUF _IOW(SDI_IOC_MAGIC, 131, unsigned int)
#define SDI_IOC_DQBUF_DEPRECATED _IOR(SDI_IOC_MAGIC, 132, unsigned int)
#define SDI_IOC_DQBUF _IOW(SDI_IOC_MAGIC, 132, unsigned int)
/* Transmitter event flag bit locations */
#define SDI_EVENT_TX_BUFFER_ORDER 0
#define SDI_EVENT_TX_BUFFER (1 << SDI_EVENT_TX_BUFFER_ORDER)
#define SDI_EVENT_TX_FIFO_ORDER 1
#define SDI_EVENT_TX_FIFO (1 << SDI_EVENT_TX_FIFO_ORDER)
#define SDI_EVENT_TX_DATA_ORDER 2
#define SDI_EVENT_TX_DATA (1 << SDI_EVENT_TX_DATA_ORDER)
/* Receiver event flag bit locations */
#define SDI_EVENT_RX_BUFFER_ORDER 0
#define SDI_EVENT_RX_BUFFER (1 << SDI_EVENT_RX_BUFFER_ORDER)
#define SDI_EVENT_RX_FIFO_ORDER 1
#define SDI_EVENT_RX_FIFO (1 << SDI_EVENT_RX_FIFO_ORDER)
#define SDI_EVENT_RX_CARRIER_ORDER 2
#define SDI_EVENT_RX_CARRIER (1 << SDI_EVENT_RX_CARRIER_ORDER)
/* Interface capabilities */
#define SDI_CAP_TX_RXCLKSRC 0x00000001
/* Transmitter clock source settings */
#define SDI_CTL_TX_CLKSRC_ONBOARD 0
#define SDI_CTL_TX_CLKSRC_EXT 1
#define SDI_CTL_TX_CLKSRC_RX 2
/* Mode settings */
#define SDI_CTL_MODE_8BIT 0
#define SDI_CTL_MODE_10BIT 1
#endif
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