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