src/jtag/drivers/versaloon/usbtoxxx/usbtoswd.c

   1 /***************************************************************************
   2  *   Copyright (C) 2009 - 2010 by Simon Qian <SimonQian@SimonQian.com>     *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  18  ***************************************************************************/
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include <stdlib.h>
  25 #include <string.h>
  26
  27 #include "../versaloon_include.h"
  28 #include "../versaloon.h"
  29 #include "../versaloon_internal.h"
  30 #include "usbtoxxx.h"
  31 #include "usbtoxxx_internal.h"
  32
  33 RESULT usbtoswd_callback(void *p, uint8_t *src, uint8_t *processed)
  34 {
  35         struct versaloon_pending_t *pending = (struct versaloon_pending_t *)p;
  36
  37         processed = processed;
  38
  39         if (pending->extra_data != NULL)
  40                 *((uint8_t *)pending->extra_data) = src[0];
  41
  42         return ERROR_OK;
  43 }
  44
  45 RESULT usbtoswd_init(uint8_t interface_index)
  46 {
  47         return usbtoxxx_init_command(USB_TO_SWD, interface_index);
  48 }
  49
  50 RESULT usbtoswd_fini(uint8_t interface_index)
  51 {
  52         return usbtoxxx_fini_command(USB_TO_SWD, interface_index);
  53 }
  54
  55 RESULT usbtoswd_config(uint8_t interface_index, uint8_t trn, uint16_t retry,
  56         uint16_t dly)
  57 {
  58         uint8_t cfg_buf[5];
  59
  60 #if PARAM_CHECK
  61         if (interface_index > 7) {
  62                 LOG_BUG(ERRMSG_INVALID_INTERFACE_NUM, interface_index);
  63                 return ERROR_FAIL;
  64         }
  65 #endif
  66
  67         cfg_buf[0] = trn;
  68         SET_LE_U16(&cfg_buf[1], retry);
  69         SET_LE_U16(&cfg_buf[3], dly);
  70
  71         return usbtoxxx_conf_command(USB_TO_SWD, interface_index, cfg_buf, 5);
  72 }
  73
  74 RESULT usbtoswd_seqout(uint8_t interface_index, uint8_t *data, uint16_t bitlen)
  75 {
  76         uint16_t bytelen = (bitlen + 7) >> 3;
  77
  78 #if PARAM_CHECK
  79         if (interface_index > 7) {
  80                 LOG_BUG(ERRMSG_INVALID_INTERFACE_NUM, interface_index);
  81                 return ERROR_FAIL;
  82         }
  83 #endif
  84
  85         SET_LE_U16(&versaloon_cmd_buf[0], bitlen);
  86         memcpy(versaloon_cmd_buf + 2, data, bytelen);
  87
  88         return usbtoxxx_out_command(USB_TO_SWD, interface_index,
  89                 versaloon_cmd_buf, bytelen + 2, 0);
  90 }
  91
  92 RESULT usbtoswd_seqin(uint8_t interface_index, uint8_t *data, uint16_t bitlen)
  93 {
  94         uint16_t bytelen = (bitlen + 7) >> 3;
  95         uint8_t buff[2];
  96
  97 #if PARAM_CHECK
  98         if (interface_index > 7) {
  99                 LOG_BUG(ERRMSG_INVALID_INTERFACE_NUM, interface_index);
 100                 return ERROR_FAIL;
 101         }
 102 #endif
 103
 104         SET_LE_U16(&buff[0], bitlen);
 105
 106         return usbtoxxx_in_command(USB_TO_SWD, interface_index, buff, 2, bytelen,
 107                 data, 0, bytelen, 0);
 108 }
 109
 110 RESULT usbtoswd_transact(uint8_t interface_index, uint8_t request,
 111         uint32_t *data, uint8_t *ack)
 112 {
 113         uint8_t parity;
 114         uint8_t buff[5];
 115
 116 #if PARAM_CHECK
 117         if (interface_index > 7) {
 118                 LOG_BUG(ERRMSG_INVALID_INTERFACE_NUM, interface_index);
 119                 return ERROR_FAIL;
 120         }
 121 #endif
 122
 123         parity = (request >> 1) & 1;
 124         parity += (request >> 2) & 1;
 125         parity += (request >> 3) & 1;
 126         parity += (request >> 4) & 1;
 127         parity &= 1;
 128         buff[0] = (request | 0x81 | (parity << 5)) & ~0x40;
 129         if (data != NULL)
 130                 SET_LE_U32(&buff[1], *data);
 131         else
 132                 memset(buff + 1, 0, 4);
 133
 134         versaloon_set_extra_data(ack);
 135         versaloon_set_callback(usbtoswd_callback);
 136         if (request & 0x04) {
 137                 /* read */
 138                 return usbtoxxx_inout_command(USB_TO_SWD, interface_index, buff, 5, 5,
 139                         (uint8_t *)data, 1, 4, 0);
 140         } else {
 141                 /* write */
 142                 return usbtoxxx_inout_command(USB_TO_SWD, interface_index, buff, 5, 5,
 143                         NULL, 0, 0, 0);
 144         }
 145 }