arch/m68k/include/asm/dsp56k.h

   1 /*
   2  * linux/include/asm-m68k/dsp56k.h - defines and declarations for
   3  *                                   DSP56k device driver
   4  *
   5  * Copyright (C) 1996,1997 Fredrik Noring, lars brinkhoff & Tomas Berndtsson
   6  *
   7  * This file is subject to the terms and conditions of the GNU General Public
   8  * License.  See the file COPYING in the main directory of this archive
   9  * for more details.
  10  */
  11
  12
  13 /* Used for uploading DSP binary code */
  14 struct dsp56k_upload {
  15         int len;
  16         char __user *bin;
  17 };
  18
  19 /* For the DSP host flags */
  20 struct dsp56k_host_flags {
  21         int dir;     /* Bit field. 1 = write output bit, 0 = do nothing.
  22                       * 0x0000 means reading only, 0x0011 means
  23                       * writing the bits stored in `out' on HF0 and HF1.
  24                       * Note that HF2 and HF3 can only be read.
  25                       */
  26         int out;     /* Bit field like above. */
  27         int status;  /* Host register's current state is returned */
  28 };
  29
  30 /* ioctl command codes */
  31 #define DSP56K_UPLOAD           1    /* Upload DSP binary program       */
  32 #define DSP56K_SET_TX_WSIZE     2    /* Host transmit word size (1-4)   */
  33 #define DSP56K_SET_RX_WSIZE     3    /* Host receive word size (1-4)    */
  34 #define DSP56K_HOST_FLAGS       4    /* Host flag registers             */
  35 #define DSP56K_HOST_CMD         5    /* Trig Host Command (0-31)        */