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  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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         if (pending->extra_data != NULL)
  38                 *((uint8_t *)pending->extra_data) = src[0];
  39
  40         return ERROR_OK;
  41 }
  42
  43 RESULT usbtoswd_init(uint8_t interface_index)
  44 {
  45         return usbtoxxx_init_command(USB_TO_SWD, interface_index);
  46 }
  47
  48 RESULT usbtoswd_fini(uint8_t interface_index)
  49 {
  50         return usbtoxxx_fini_command(USB_TO_SWD, interface_index);
  51 }
  52
  53 RESULT usbtoswd_config(uint8_t interface_index, uint8_t trn, uint16_t retry,
  54         uint16_t dly)
  55 {
  56         uint8_t cfg_buf[5];
  57
  58 #if PARAM_CHECK
  59         if (interface_index > 7) {
  60                 LOG_BUG(ERRMSG_INVALID_INTERFACE_NUM, interface_index);
  61                 return ERROR_FAIL;
  62         }
  63 #endif
  64
  65         cfg_buf[0] = trn;
  66         SET_LE_U16(&cfg_buf[1], retry);
  67         SET_LE_U16(&cfg_buf[3], dly);
  68
  69         return usbtoxxx_conf_command(USB_TO_SWD, interface_index, cfg_buf, 5);
  70 }
  71
  72 RESULT usbtoswd_seqout(uint8_t interface_index, uint8_t *data, uint16_t bitlen)
  73 {
  74         uint16_t bytelen = (bitlen + 7) >> 3;
  75
  76 #if PARAM_CHECK
  77         if (interface_index > 7) {
  78                 LOG_BUG(ERRMSG_INVALID_INTERFACE_NUM, interface_index);
  79                 return ERROR_FAIL;
  80         }
  81 #endif
  82
  83         SET_LE_U16(&versaloon_cmd_buf[0], bitlen);
  84         memcpy(versaloon_cmd_buf + 2, data, bytelen);
  85
  86         return usbtoxxx_out_command(USB_TO_SWD, interface_index,
  87                 versaloon_cmd_buf, bytelen + 2, 0);
  88 }
  89
  90 RESULT usbtoswd_seqin(uint8_t interface_index, uint8_t *data, uint16_t bitlen)
  91 {
  92         uint16_t bytelen = (bitlen + 7) >> 3;
  93         uint8_t buff[2];
  94
  95 #if PARAM_CHECK
  96         if (interface_index > 7) {
  97                 LOG_BUG(ERRMSG_INVALID_INTERFACE_NUM, interface_index);
  98                 return ERROR_FAIL;
  99         }
 100 #endif
 101
 102         SET_LE_U16(&buff[0], bitlen);
 103
 104         return usbtoxxx_in_command(USB_TO_SWD, interface_index, buff, 2, bytelen,
 105                 data, 0, bytelen, 0);
 106 }
 107
 108 RESULT usbtoswd_transact(uint8_t interface_index, uint8_t request,
 109         uint32_t *data, uint8_t *ack)
 110 {
 111         uint8_t parity;
 112         uint8_t buff[5];
 113
 114 #if PARAM_CHECK
 115         if (interface_index > 7) {
 116                 LOG_BUG(ERRMSG_INVALID_INTERFACE_NUM, interface_index);
 117                 return ERROR_FAIL;
 118         }
 119 #endif
 120
 121         parity = (request >> 1) & 1;
 122         parity += (request >> 2) & 1;
 123         parity += (request >> 3) & 1;
 124         parity += (request >> 4) & 1;
 125         parity &= 1;
 126         buff[0] = (request | 0x81 | (parity << 5)) & ~0x40;
 127         if (data != NULL)
 128                 SET_LE_U32(&buff[1], *data);
 129         else
 130                 memset(buff + 1, 0, 4);
 131
 132         versaloon_set_extra_data(ack);
 133         versaloon_set_callback(usbtoswd_callback);
 134         if (request & 0x04) {
 135                 /* read */
 136                 return usbtoxxx_inout_command(USB_TO_SWD, interface_index, buff, 5, 5,
 137                         (uint8_t *)data, 1, 4, 0);
 138         } else {
 139                 /* write */
 140                 return usbtoxxx_inout_command(USB_TO_SWD, interface_index, buff, 5, 5,
 141                         NULL, 0, 0, 0);
 142         }
 143 }