1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 /***************************************************************************
4 * Copyright (C) 2009 - 2010 by Simon Qian <SimonQian@SimonQian.com> *
5 ***************************************************************************/
14 #include "../versaloon_include.h"
15 #include "../versaloon.h"
16 #include "../versaloon_internal.h"
18 #include "usbtoxxx_internal.h"
20 static RESULT usbtoswd_read_callback(void *p, uint8_t *src, uint8_t *processed)
22 struct versaloon_pending_t *pending = (struct versaloon_pending_t *)p;
24 if (pending->extra_data)
25 *((uint8_t *)pending->extra_data) = src[0];
30 static RESULT usbtoswd_write_callback(void *p, uint8_t *src, uint8_t *processed)
32 struct versaloon_pending_t *pending = (struct versaloon_pending_t *)p;
34 if (pending->extra_data)
35 *((uint8_t *)pending->extra_data) = src[0];
37 /* mark it processed to ignore other input data */
42 RESULT usbtoswd_init(uint8_t interface_index)
44 return usbtoxxx_init_command(USB_TO_SWD, interface_index);
47 RESULT usbtoswd_fini(uint8_t interface_index)
49 return usbtoxxx_fini_command(USB_TO_SWD, interface_index);
52 RESULT usbtoswd_config(uint8_t interface_index, uint8_t trn, uint16_t retry,
58 if (interface_index > 7) {
59 LOG_BUG(ERRMSG_INVALID_INTERFACE_NUM, interface_index);
65 SET_LE_U16(&cfg_buf[1], retry);
66 SET_LE_U16(&cfg_buf[3], dly);
68 return usbtoxxx_conf_command(USB_TO_SWD, interface_index, cfg_buf, 5);
71 RESULT usbtoswd_seqout(uint8_t interface_index, const uint8_t *data,
74 uint16_t bytelen = (bitlen + 7) >> 3;
77 if (interface_index > 7) {
78 LOG_BUG(ERRMSG_INVALID_INTERFACE_NUM, interface_index);
83 SET_LE_U16(&versaloon_cmd_buf[0], bitlen);
84 memcpy(versaloon_cmd_buf + 2, data, bytelen);
86 return usbtoxxx_out_command(USB_TO_SWD, interface_index,
87 versaloon_cmd_buf, bytelen + 2, 0);
90 RESULT usbtoswd_seqin(uint8_t interface_index, uint8_t *data, uint16_t bitlen)
92 uint16_t bytelen = (bitlen + 7) >> 3;
96 if (interface_index > 7) {
97 LOG_BUG(ERRMSG_INVALID_INTERFACE_NUM, interface_index);
102 SET_LE_U16(&buff[0], bitlen);
104 return usbtoxxx_in_command(USB_TO_SWD, interface_index, buff, 2, bytelen,
105 data, 0, bytelen, 0);
108 RESULT usbtoswd_transact(uint8_t interface_index, uint8_t request,
109 uint32_t *data, uint8_t *ack)
115 if (interface_index > 7) {
116 LOG_BUG(ERRMSG_INVALID_INTERFACE_NUM, interface_index);
121 parity = (request >> 1) & 1;
122 parity += (request >> 2) & 1;
123 parity += (request >> 3) & 1;
124 parity += (request >> 4) & 1;
126 buff[0] = (request | 0x81 | (parity << 5)) & ~0x40;
128 SET_LE_U32(&buff[1], *data);
130 memset(buff + 1, 0, 4);
132 versaloon_set_extra_data(ack);
133 if (request & 0x04) {
135 versaloon_set_callback(usbtoswd_read_callback);
138 versaloon_set_callback(usbtoswd_write_callback);
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);