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);
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