git.gag.com Git - fw/openocd/blob - src/jtag/drivers/versaloon/usbtoxxx/usbtoswd.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2
   3 /***************************************************************************
   4  *   Copyright (C) 2009 - 2010 by Simon Qian <SimonQian@SimonQian.com>     *
   5  ***************************************************************************/
   6
   7 #ifdef HAVE_CONFIG_H
   8 #include "config.h"
   9 #endif
  10
  11 #include <stdlib.h>
  12 #include <string.h>
  13
  14 #include "../versaloon_include.h"
  15 #include "../versaloon.h"
  16 #include "../versaloon_internal.h"
  17 #include "usbtoxxx.h"
  18 #include "usbtoxxx_internal.h"
  19
  20 static RESULT usbtoswd_read_callback(void *p, uint8_t *src, uint8_t *processed)
  21 {
  22         struct versaloon_pending_t *pending = (struct versaloon_pending_t *)p;
  23
  24         if (pending->extra_data)
  25                 *((uint8_t *)pending->extra_data) = src[0];
  26
  27         return ERROR_OK;
  28 }
  29
  30 static RESULT usbtoswd_write_callback(void *p, uint8_t *src, uint8_t *processed)
  31 {
  32         struct versaloon_pending_t *pending = (struct versaloon_pending_t *)p;
  33
  34         if (pending->extra_data)
  35                 *((uint8_t *)pending->extra_data) = src[0];
  36
  37         /* mark it processed to ignore other input data */
  38         *processed = 1;
  39         return ERROR_OK;
  40 }
  41
  42 RESULT usbtoswd_init(uint8_t interface_index)
  43 {
  44         return usbtoxxx_init_command(USB_TO_SWD, interface_index);
  45 }
  46
  47 RESULT usbtoswd_fini(uint8_t interface_index)
  48 {
  49         return usbtoxxx_fini_command(USB_TO_SWD, interface_index);
  50 }
  51
  52 RESULT usbtoswd_config(uint8_t interface_index, uint8_t trn, uint16_t retry,
  53         uint16_t dly)
  54 {
  55         uint8_t cfg_buf[5];
  56
  57 #if PARAM_CHECK
  58         if (interface_index > 7) {
  59                 LOG_BUG(ERRMSG_INVALID_INTERFACE_NUM, interface_index);
  60                 return ERROR_FAIL;
  61         }
  62 #endif
  63
  64         cfg_buf[0] = trn;
  65         SET_LE_U16(&cfg_buf[1], retry);
  66         SET_LE_U16(&cfg_buf[3], dly);
  67
  68         return usbtoxxx_conf_command(USB_TO_SWD, interface_index, cfg_buf, 5);
  69 }
  70
  71 RESULT usbtoswd_seqout(uint8_t interface_index, const uint8_t *data,
  72         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)
 128                 SET_LE_U32(&buff[1], *data);
 129         else
 130                 memset(buff + 1, 0, 4);
 131
 132         versaloon_set_extra_data(ack);
 133         if (request & 0x04) {
 134                 /* read */
 135                 versaloon_set_callback(usbtoswd_read_callback);
 136         } else {
 137                 /* write */
 138                 versaloon_set_callback(usbtoswd_write_callback);
 139         }
 140
 141         /* Input buffer must be passed even for write operations. Otherwise
 142          * the callback function is not called and ack value is not set. */
 143         return usbtoxxx_inout_command(USB_TO_SWD, interface_index, buff, 5, 5,
 144                 (uint8_t *)data, 1, 4, 0);
 145 }