linux/drivers/isdn/hardware/mISDN/netjet.h
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   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * NETjet common header file
   4 *
   5 * Author       Karsten Keil
   6 *              based on work of Matt Henderson and Daniel Potts,
   7 *              Traverse Technologies P/L www.traverse.com.au
   8 *
   9 * Copyright 2009  by Karsten Keil <keil@isdn4linux.de>
  10 */
  11
  12#define NJ_CTRL                 0x00
  13#define NJ_DMACTRL              0x01
  14#define NJ_AUXCTRL              0x02
  15#define NJ_AUXDATA              0x03
  16#define NJ_IRQMASK0             0x04
  17#define NJ_IRQMASK1             0x05
  18#define NJ_IRQSTAT0             0x06
  19#define NJ_IRQSTAT1             0x07
  20#define NJ_DMA_READ_START       0x08
  21#define NJ_DMA_READ_IRQ         0x0c
  22#define NJ_DMA_READ_END         0x10
  23#define NJ_DMA_READ_ADR         0x14
  24#define NJ_DMA_WRITE_START      0x18
  25#define NJ_DMA_WRITE_IRQ        0x1c
  26#define NJ_DMA_WRITE_END        0x20
  27#define NJ_DMA_WRITE_ADR        0x24
  28#define NJ_PULSE_CNT            0x28
  29
  30#define NJ_ISAC_OFF             0xc0
  31#define NJ_ISACIRQ              0x10
  32
  33#define NJ_IRQM0_RD_MASK        0x03
  34#define NJ_IRQM0_RD_IRQ         0x01
  35#define NJ_IRQM0_RD_END         0x02
  36#define NJ_IRQM0_WR_MASK        0x0c
  37#define NJ_IRQM0_WR_IRQ         0x04
  38#define NJ_IRQM0_WR_END         0x08
  39
  40/* one page here is no need to be smaller */
  41#define NJ_DMA_SIZE             4096
  42/* 2 * 64 byte is a compromise between IRQ count and latency */
  43#define NJ_DMA_RXSIZE           128  /* 2 * 64 */
  44#define NJ_DMA_TXSIZE           128  /* 2 * 64 */
  45