src/jtag/bitq.h

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by Pavel Chromy                                    *
   3  *   chromy@asix.cz                                                        *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifndef BITQ_H
  21 #define BITQ_H
  22
  23 #include "jtag.h"
  24
  25 typedef struct bitq_interface_s
  26 {
  27         /* functions enqueueing low level IO requests
  28         */
  29         int (*out)(int tms, int tdi, int tdo_req);
  30         int (*flush)(void);
  31
  32         int (*sleep)(unsigned long us);
  33         int (*reset)(int trst, int srst);
  34
  35         /* delayed read of requested TDO data,
  36          * the input shall be checked after call to any enqueuing function
  37          */
  38         int (*in_rdy)(void);
  39         int (*in)(void);
  40 } bitq_interface_t;
  41
  42 typedef struct bitq_state_s
  43 {
  44   jtag_command_t *cmd; /* command currently processed */
  45   int field_idx; /* index of field currently being processed */
  46   int bit_pos; /* position of bit curently being processed */
  47
  48   int status; /* processing status */
  49 } bitq_state_t;
  50
  51 extern bitq_interface_t *bitq_interface;
  52
  53 extern int bitq_execute_queue(void);
  54
  55 extern void bitq_cleanup(void);
  56
  57 #endif /* BITQ_H */