src/target/etb.h

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   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
  21 #ifndef ETB_H
  22 #define ETB_H
  23
  24 /* ETB registers */
  25 enum {
  26         ETB_ID = 0x00,
  27         ETB_RAM_DEPTH = 0x01,
  28         ETB_RAM_WIDTH = 0x02,
  29         ETB_STATUS = 0x03,
  30         ETB_RAM_DATA = 0x04,
  31         ETB_RAM_READ_POINTER = 0x05,
  32         ETB_RAM_WRITE_POINTER = 0x06,
  33         ETB_TRIGGER_COUNTER = 0x07,
  34         ETB_CTRL = 0x08,
  35 };
  36
  37 struct etb {
  38         struct etm_context *etm_ctx;
  39         struct jtag_tap *tap;
  40         uint32_t cur_scan_chain;
  41         struct reg_cache *reg_cache;
  42
  43         /* ETB parameters */
  44         uint32_t ram_depth;
  45         uint32_t ram_width;
  46
  47         /** how much trace buffer to fill after trigger */
  48         unsigned trigger_percent;
  49 };
  50
  51 struct etb_reg {
  52         uint32_t addr;
  53         struct etb *etb;
  54 };
  55
  56 extern struct etm_capture_driver etb_capture_driver;
  57
  58 struct reg_cache *etb_build_reg_cache(struct etb *etb);
  59
  60 #endif /* ETB_H */