+// SPDX-License-Identifier: GPL-2.0-or-later
+
/***************************************************************************
* Copyright (C) 2009 - 2010 by Simon Qian <SimonQian@SimonQian.com> *
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "usbtoxxx.h"
#include "usbtoxxx_internal.h"
-RESULT usbtoswd_callback(void *p, uint8_t *src, uint8_t *processed)
+static RESULT usbtoswd_read_callback(void *p, uint8_t *src, uint8_t *processed)
{
struct versaloon_pending_t *pending = (struct versaloon_pending_t *)p;
-
- processed = processed;
-
- if (pending->extra_data != NULL)
- {
+
+ if (pending->extra_data)
*((uint8_t *)pending->extra_data) = src[0];
- }
-
+
+ return ERROR_OK;
+}
+
+static RESULT usbtoswd_write_callback(void *p, uint8_t *src, uint8_t *processed)
+{
+ struct versaloon_pending_t *pending = (struct versaloon_pending_t *)p;
+
+ if (pending->extra_data)
+ *((uint8_t *)pending->extra_data) = src[0];
+
+ /* mark it processed to ignore other input data */
+ *processed = 1;
return ERROR_OK;
}
}
RESULT usbtoswd_config(uint8_t interface_index, uint8_t trn, uint16_t retry,
- uint16_t dly)
+ uint16_t dly)
{
uint8_t cfg_buf[5];
-
+
#if PARAM_CHECK
- if (interface_index > 7)
- {
+ if (interface_index > 7) {
LOG_BUG(ERRMSG_INVALID_INTERFACE_NUM, interface_index);
return ERROR_FAIL;
}
#endif
-
+
cfg_buf[0] = trn;
SET_LE_U16(&cfg_buf[1], retry);
SET_LE_U16(&cfg_buf[3], dly);
-
+
return usbtoxxx_conf_command(USB_TO_SWD, interface_index, cfg_buf, 5);
}
-RESULT usbtoswd_seqout(uint8_t interface_index, uint8_t *data, uint16_t bitlen)
+RESULT usbtoswd_seqout(uint8_t interface_index, const uint8_t *data,
+ uint16_t bitlen)
{
uint16_t bytelen = (bitlen + 7) >> 3;
-
+
#if PARAM_CHECK
- if (interface_index > 7)
- {
+ if (interface_index > 7) {
LOG_BUG(ERRMSG_INVALID_INTERFACE_NUM, interface_index);
return ERROR_FAIL;
}
#endif
-
+
SET_LE_U16(&versaloon_cmd_buf[0], bitlen);
memcpy(versaloon_cmd_buf + 2, data, bytelen);
-
+
return usbtoxxx_out_command(USB_TO_SWD, interface_index,
- versaloon_cmd_buf, bytelen + 2, 0);
+ versaloon_cmd_buf, bytelen + 2, 0);
}
RESULT usbtoswd_seqin(uint8_t interface_index, uint8_t *data, uint16_t bitlen)
{
uint16_t bytelen = (bitlen + 7) >> 3;
uint8_t buff[2];
-
+
#if PARAM_CHECK
- if (interface_index > 7)
- {
+ if (interface_index > 7) {
LOG_BUG(ERRMSG_INVALID_INTERFACE_NUM, interface_index);
return ERROR_FAIL;
}
#endif
-
+
SET_LE_U16(&buff[0], bitlen);
-
+
return usbtoxxx_in_command(USB_TO_SWD, interface_index, buff, 2, bytelen,
- data, 0, bytelen, 0);
+ data, 0, bytelen, 0);
}
RESULT usbtoswd_transact(uint8_t interface_index, uint8_t request,
- uint32_t *data, uint8_t *ack)
+ uint32_t *data, uint8_t *ack)
{
uint8_t parity;
uint8_t buff[5];
-
+
#if PARAM_CHECK
- if (interface_index > 7)
- {
+ if (interface_index > 7) {
LOG_BUG(ERRMSG_INVALID_INTERFACE_NUM, interface_index);
return ERROR_FAIL;
}
#endif
-
+
parity = (request >> 1) & 1;
parity += (request >> 2) & 1;
parity += (request >> 3) & 1;
parity += (request >> 4) & 1;
parity &= 1;
buff[0] = (request | 0x81 | (parity << 5)) & ~0x40;
- if (data != NULL)
- {
+ if (data)
SET_LE_U32(&buff[1], *data);
- }
else
- {
memset(buff + 1, 0, 4);
- }
-
+
versaloon_set_extra_data(ack);
- versaloon_set_callback(usbtoswd_callback);
- if (request & 0x04)
- {
- // read
- return usbtoxxx_inout_command(USB_TO_SWD, interface_index, buff, 5, 5,
- (uint8_t *)data, 1, 4, 0);
+ if (request & 0x04) {
+ /* read */
+ versaloon_set_callback(usbtoswd_read_callback);
+ } else {
+ /* write */
+ versaloon_set_callback(usbtoswd_write_callback);
}
- else
- {
- // write
- return usbtoxxx_inout_command(USB_TO_SWD, interface_index, buff, 5, 5,
- NULL, 0, 0, 0);
- }
-}
+ /* Input buffer must be passed even for write operations. Otherwise
+ * the callback function is not called and ack value is not set. */
+ return usbtoxxx_inout_command(USB_TO_SWD, interface_index, buff, 5, 5,
+ (uint8_t *)data, 1, 4, 0);
+}
projects / fw / openocd / blobdiff