include/asm-mips/rtlx.h

   1 /*
   2  * Copyright (C) 2004, 2005 MIPS Technologies, Inc.  All rights reserved.
   3  *
   4  */
   5
   6 #ifndef _RTLX_H
   7 #define _RTLX_H_
   8
   9 #define LX_NODE_BASE 10
  10
  11 #define MIPSCPU_INT_BASE       16
  12 #define MIPS_CPU_RTLX_IRQ 0
  13
  14 #define RTLX_VERSION 1
  15 #define RTLX_xID 0x12345600
  16 #define RTLX_ID (RTLX_xID | RTLX_VERSION)
  17 #define RTLX_CHANNELS 8
  18
  19 enum rtlx_state {
  20         RTLX_STATE_UNUSED = 0,
  21         RTLX_STATE_INITIALISED,
  22         RTLX_STATE_REMOTE_READY,
  23         RTLX_STATE_OPENED
  24 };
  25
  26 #define RTLX_BUFFER_SIZE 1024
  27 /* each channel supports read and write.
  28    linux (vpe0) reads lx_buffer  and writes rt_buffer
  29    SP (vpe1) reads rt_buffer and writes lx_buffer
  30 */
  31 typedef struct rtlx_channel {
  32         enum rtlx_state rt_state;
  33         enum rtlx_state lx_state;
  34
  35         int buffer_size;
  36
  37         /* read and write indexes per buffer */
  38         int rt_write, rt_read;
  39         char *rt_buffer;
  40
  41         int lx_write, lx_read;
  42         char *lx_buffer;
  43
  44         void *queues;
  45
  46 } rtlx_channel_t;
  47
  48 typedef struct rtlx_info {
  49         unsigned long id;
  50         enum rtlx_state state;
  51
  52         struct rtlx_channel channel[RTLX_CHANNELS];
  53
  54 } rtlx_info_t;
  55
  56 #endif