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/*
* $Id: dmascc.h,v 1.1 1997/12/01 10:44:55 oe1kib Exp $
*
* Driver for high-speed SCC boards (those with DMA support)
* Copyright (C) 1997 Klaus Kudielka
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* Ioctls */
#define SIOCGSCCPARAM SIOCDEVPRIVATE
#define SIOCSSCCPARAM (SIOCDEVPRIVATE+1)
/* Frequency of timer 0 */
#define TMR_0_HZ 25600
/* Configurable parameters */
struct scc_param {
int pclk_hz; /* frequency of BRG input (read-only - don't change) */
int brg_tc; /* baud rate generator terminal count - BRG disabled if < 0 */
int nrzi; /* 0 (nrz), 1 (nrzi) */
int clocks; /* see documentation */
int txdelay; /* [1/TMR_0_HZ] */
int txtime; /* [1/HZ] */
int sqdelay; /* [1/TMR_0_HZ] */
int waittime; /* [1/TMR_0_HZ] */
int slottime; /* [1/TMR_0_HZ] */
int persist; /* 0 ... 255 */
int dma; /* 1, 3 */
};
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