1 /***************************************************************************
2 * Copyright (C) 2009 by Simon Qian <SimonQian@SimonQian.com> *
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. *
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. *
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 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
18 ***************************************************************************/
20 /* Versaloon is a programming tool for multiple MCUs.
21 * OpenOCD and MSP430 supports are distributed under GPLv2.
22 * You can find it at http://www.SimonQian.com/en/Versaloon.
29 #include "replacements.h"
38 //#define _VSLLINK_IN_DEBUG_MODE_
40 /* enable this to view USB communication
43 #define _DEBUG_USB_COMMS_
46 #ifdef _DEBUG_JTAG_IO_
47 #define DEBUG_JTAG_IO(expr ...) LOG_DEBUG(expr)
49 #define DEBUG_JTAG_IO(expr ...)
57 #define VSLLINK_USB_TIMEOUT 10000
59 static int VSLLINK_BufferSize
= 1024;
61 /* Global USB buffers */
62 static int vsllink_usb_out_buffer_idx
;
63 static int vsllink_usb_in_want_length
;
64 static u8
* vsllink_usb_in_buffer
= NULL
;
65 static u8
* vsllink_usb_out_buffer
= NULL
;
67 /* Constants for VSLLink command */
68 #define VSLLINK_CMD_CONN 0x80
69 #define VSLLINK_CMD_DISCONN 0x81
70 #define VSLLINK_CMD_SET_SPEED 0x82
71 #define VSLLINK_CMD_SET_PORT 0x90
72 #define VSLLINK_CMD_GET_PORT 0x91
73 #define VSLLINK_CMD_SET_PORTDIR 0x92
74 #define VSLLINK_CMD_HW_JTAGSEQCMD 0xA0
75 #define VSLLINK_CMD_HW_JTAGHLCMD 0xA1
76 #define VSLLINK_CMD_HW_SWDCMD 0xA2
78 #define VSLLINK_CMDJTAGSEQ_TMSBYTE 0x00
79 #define VSLLINK_CMDJTAGSEQ_TMSCLOCK 0x40
80 #define VSLLINK_CMDJTAGSEQ_SCAN 0x80
82 #define VSLLINK_CMDJTAGSEQ_CMDMSK 0xC0
83 #define VSLLINK_CMDJTAGSEQ_LENMSK 0x3F
85 #define JTAG_PINMSK_SRST (1 << 0)
86 #define JTAG_PINMSK_TRST (1 << 1)
87 #define JTAG_PINMSK_USR1 (1 << 2)
88 #define JTAG_PINMSK_USR2 (1 << 3)
89 #define JTAG_PINMSK_TCK (1 << 4)
90 #define JTAG_PINMSK_TMS (1 << 5)
91 #define JTAG_PINMSK_TDI (1 << 6)
92 #define JTAG_PINMSK_TDO (1 << 7)
95 #define VSLLINK_TAP_MOVE(from, to) VSLLINK_tap_move[tap_move_ndx(from)][tap_move_ndx(to)]
97 /* VSLLINK_tap_move[i][j]: tap movement command to go from state i to state j
105 * SD->SD and SI->SI have to be caught in interface specific code
107 u8 VSLLINK_tap_move
[6][6] =
109 /* TLR RTI SD PD SI PI */
110 {0xff, 0x7f, 0x2f, 0x0a, 0x37, 0x16}, /* TLR */
111 {0xff, 0x00, 0x45, 0x05, 0x4b, 0x0b}, /* RTI */
112 {0xff, 0x61, 0x00, 0x01, 0x0f, 0x2f}, /* SD */
113 {0xff, 0x60, 0x40, 0x5c, 0x3c, 0x5e}, /* PD */
114 {0xff, 0x61, 0x07, 0x17, 0x00, 0x01}, /* SI */
115 {0xff, 0x60, 0x38, 0x5c, 0x40, 0x5e} /* PI */
118 typedef struct insert_insignificant_operation
120 unsigned char insert_value
;
121 unsigned char insert_position
;
122 }insert_insignificant_operation_t
;
124 insert_insignificant_operation_t VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT
[6][6] =
171 u8 VSLLINK_BIT_MSK
[8] =
173 0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f
178 int length
; /* Number of bits to read */
180 scan_command_t
*command
; /* Corresponding scan command */
182 } pending_scan_result_t
;
184 #define MAX_PENDING_SCAN_RESULTS 256
186 static int pending_scan_results_length
;
187 static pending_scan_result_t pending_scan_results_buffer
[MAX_PENDING_SCAN_RESULTS
];
189 /* External interface functions */
190 int vsllink_execute_queue(void);
191 int vsllink_speed(int speed
);
192 int vsllink_khz(int khz
, int *jtag_speed
);
193 int vsllink_speed_div(int jtag_speed
, int *khz
);
194 int vsllink_register_commands(struct command_context_s
*cmd_ctx
);
195 int vsllink_init(void);
196 int vsllink_quit(void);
198 /* CLI command handler functions */
199 int vsllink_handle_usb_vid_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
200 int vsllink_handle_usb_pid_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
201 int vsllink_handle_usb_bulkin_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
202 int vsllink_handle_usb_bulkout_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
204 /* Queue command functions */
205 void vsllink_end_state(tap_state_t state
);
206 void vsllink_state_move(void);
207 void vsllink_path_move(int num_states
, tap_state_t
*path
);
208 void vsllink_runtest(int num_cycles
);
209 void vsllink_stableclocks(int num_cycles
, int tms
);
210 void vsllink_scan(int ir_scan
, enum scan_type type
, u8
*buffer
, int scan_size
, scan_command_t
*command
);
211 void vsllink_reset(int trst
, int srst
);
212 void vsllink_simple_command(u8 command
);
214 /* VSLLink tap buffer functions */
215 void vsllink_tap_init(void);
216 int vsllink_tap_execute(void);
217 void vsllink_tap_ensure_space(int scans
, int bytes
);
218 void vsllink_tap_append_scan(int length
, u8
*buffer
, scan_command_t
*command
, int offset
);
220 /* VSLLink lowlevel functions */
221 typedef struct vsllink_jtag
223 struct usb_dev_handle
* usb_handle
;
226 vsllink_jtag_t
*vsllink_usb_open(void);
227 void vsllink_usb_close(vsllink_jtag_t
*vsllink_jtag
);
228 int vsllink_usb_message(vsllink_jtag_t
*vsllink_jtag
, int out_length
, int in_length
);
229 int vsllink_usb_write(vsllink_jtag_t
*vsllink_jtag
, int out_length
);
230 int vsllink_usb_read(vsllink_jtag_t
*vsllink_jtag
);
232 void vsllink_debug_buffer(u8
*buffer
, int length
);
234 static int vsllink_tms_data_len
= 0;
235 static u8
* vsllink_tms_cmd_pos
;
237 vsllink_jtag_t
* vsllink_jtag_handle
;
239 /***************************************************************************/
240 /* External interface implementation */
242 jtag_interface_t vsllink_interface
=
245 .execute_queue
= vsllink_execute_queue
,
246 .speed
= vsllink_speed
,
248 .speed_div
= vsllink_speed_div
,
249 .register_commands
= vsllink_register_commands
,
250 .init
= vsllink_init
,
254 int vsllink_execute_queue(void)
256 jtag_command_t
*cmd
= jtag_command_queue
;
261 DEBUG_JTAG_IO("--------------------------------- vsllink -------------------------------------");
263 vsllink_usb_out_buffer
[0] = VSLLINK_CMD_HW_JTAGSEQCMD
;
264 vsllink_usb_out_buffer_idx
= 3;
270 DEBUG_JTAG_IO("end_state: %s", tap_state_name(cmd
->cmd
.end_state
->end_state
));
272 if (cmd
->cmd
.end_state
->end_state
!= -1)
274 vsllink_end_state(cmd
->cmd
.end_state
->end_state
);
279 DEBUG_JTAG_IO( "runtest %i cycles, end in %s", cmd
->cmd
.runtest
->num_cycles
, \
280 tap_state_name(cmd
->cmd
.runtest
->end_state
));
282 if (cmd
->cmd
.runtest
->end_state
!= -1)
284 vsllink_end_state(cmd
->cmd
.runtest
->end_state
);
286 vsllink_runtest(cmd
->cmd
.runtest
->num_cycles
);
290 DEBUG_JTAG_IO("statemove end in %s", tap_state_name(cmd
->cmd
.statemove
->end_state
));
292 if (cmd
->cmd
.statemove
->end_state
!= -1)
294 vsllink_end_state(cmd
->cmd
.statemove
->end_state
);
296 vsllink_state_move();
300 DEBUG_JTAG_IO("pathmove: %i states, end in %s", \
301 cmd
->cmd
.pathmove
->num_states
, \
302 tap_state_name(cmd
->cmd
.pathmove
->path
[cmd
->cmd
.pathmove
->num_states
- 1]));
304 vsllink_path_move(cmd
->cmd
.pathmove
->num_states
, cmd
->cmd
.pathmove
->path
);
308 if (cmd
->cmd
.scan
->end_state
!= -1)
310 vsllink_end_state(cmd
->cmd
.scan
->end_state
);
313 scan_size
= jtag_build_buffer(cmd
->cmd
.scan
, &buffer
);
314 if (cmd
->cmd
.scan
->ir_scan
)
316 DEBUG_JTAG_IO("JTAG Scan write IR(%d bits), end in %s:", scan_size
, tap_state_name(cmd
->cmd
.scan
->end_state
));
320 DEBUG_JTAG_IO("JTAG Scan write DR(%d bits), end in %s:", scan_size
, tap_state_name(cmd
->cmd
.scan
->end_state
));
323 #ifdef _DEBUG_JTAG_IO_
324 vsllink_debug_buffer(buffer
, (scan_size
+ 7) >> 3);
327 type
= jtag_scan_type(cmd
->cmd
.scan
);
329 vsllink_scan(cmd
->cmd
.scan
->ir_scan
, type
, buffer
, scan_size
, cmd
->cmd
.scan
);
333 DEBUG_JTAG_IO("reset trst: %i srst %i", cmd
->cmd
.reset
->trst
, cmd
->cmd
.reset
->srst
);
335 vsllink_tap_execute();
337 if (cmd
->cmd
.reset
->trst
== 1)
339 tap_set_state(TAP_RESET
);
341 vsllink_reset(cmd
->cmd
.reset
->trst
, cmd
->cmd
.reset
->srst
);
343 vsllink_usb_out_buffer
[0] = VSLLINK_CMD_HW_JTAGSEQCMD
;
344 vsllink_usb_out_buffer_idx
= 3;
348 DEBUG_JTAG_IO("sleep %i", cmd
->cmd
.sleep
->us
);
349 vsllink_tap_execute();
350 jtag_sleep(cmd
->cmd
.sleep
->us
);
353 case JTAG_STABLECLOCKS
:
354 DEBUG_JTAG_IO("add %d clocks", cmd
->cmd
.stableclocks
->num_cycles
);
355 switch(tap_get_state())
358 // tms should be '1' to stay in TAP_RESET mode
366 // in other mode, tms should be '0'
368 break; /* above stable states are OK */
370 LOG_ERROR( "jtag_add_clocks() was called with TAP in non-stable state \"%s\"",
371 tap_state_name(tap_get_state()) );
374 vsllink_stableclocks(cmd
->cmd
.stableclocks
->num_cycles
, scan_size
);
378 LOG_ERROR("BUG: unknown JTAG command type encountered: %d", cmd
->type
);
384 return vsllink_tap_execute();
387 int vsllink_speed(int speed
)
391 vsllink_usb_out_buffer
[0] = VSLLINK_CMD_SET_SPEED
;
392 vsllink_usb_out_buffer
[1] = (speed
>> 0) & 0xff;
393 vsllink_usb_out_buffer
[2] = (speed
>> 8) & 0xFF;
395 result
= vsllink_usb_write(vsllink_jtag_handle
, 3);
403 LOG_ERROR("VSLLink setting speed failed (%d)", result
);
404 return ERROR_JTAG_DEVICE_ERROR
;
410 int vsllink_khz(int khz
, int *jtag_speed
)
417 int vsllink_speed_div(int jtag_speed
, int *khz
)
424 int vsllink_register_commands(struct command_context_s
*cmd_ctx
)
426 register_command(cmd_ctx
, NULL
, "vsllink_usb_vid", vsllink_handle_usb_vid_command
,
427 COMMAND_CONFIG
, NULL
);
428 register_command(cmd_ctx
, NULL
, "vsllink_usb_pid", vsllink_handle_usb_pid_command
,
429 COMMAND_CONFIG
, NULL
);
430 register_command(cmd_ctx
, NULL
, "vsllink_usb_bulkin", vsllink_handle_usb_bulkin_command
,
431 COMMAND_CONFIG
, NULL
);
432 register_command(cmd_ctx
, NULL
, "vsllink_usb_bulkout", vsllink_handle_usb_bulkout_command
,
433 COMMAND_CONFIG
, NULL
);
438 int vsllink_init(void)
442 char version_str
[100];
444 vsllink_usb_in_buffer
= malloc(VSLLINK_BufferSize
);
445 vsllink_usb_out_buffer
= malloc(VSLLINK_BufferSize
);
446 if ((vsllink_usb_in_buffer
== NULL
) || (vsllink_usb_out_buffer
== NULL
))
448 LOG_ERROR("Not enough memory");
452 vsllink_jtag_handle
= vsllink_usb_open();
454 if (vsllink_jtag_handle
== 0)
456 LOG_ERROR("Can't find USB JTAG Interface! Please check connection and permissions.");
457 return ERROR_JTAG_INIT_FAILED
;
461 while (check_cnt
< 3)
463 vsllink_simple_command(VSLLINK_CMD_CONN
);
464 result
= vsllink_usb_read(vsllink_jtag_handle
);
468 vsllink_usb_in_buffer
[result
] = 0;
469 VSLLINK_BufferSize
= vsllink_usb_in_buffer
[0] + (vsllink_usb_in_buffer
[1] << 8);
470 strncpy(version_str
, (char *)vsllink_usb_in_buffer
+ 2, sizeof(version_str
));
471 LOG_INFO(version_str
);
473 // free the pre-alloc memroy
474 free(vsllink_usb_in_buffer
);
475 free(vsllink_usb_out_buffer
);
476 vsllink_usb_in_buffer
= NULL
;
477 vsllink_usb_out_buffer
= NULL
;
480 vsllink_usb_in_buffer
= malloc(VSLLINK_BufferSize
);
481 vsllink_usb_out_buffer
= malloc(VSLLINK_BufferSize
);
482 if ((vsllink_usb_in_buffer
== NULL
) || (vsllink_usb_out_buffer
== NULL
))
484 LOG_ERROR("Not enough memory");
489 LOG_INFO("buffer size for USB is %d bytes", VSLLINK_BufferSize
);
493 vsllink_simple_command(VSLLINK_CMD_DISCONN
);
500 // It's dangerout to proced
501 LOG_ERROR("VSLLink initial failed");
505 // Set SRST and TRST to output, Set USR1 and USR2 to input
506 vsllink_usb_out_buffer
[0] = VSLLINK_CMD_SET_PORTDIR
;
507 vsllink_usb_out_buffer
[1] = JTAG_PINMSK_SRST
| JTAG_PINMSK_TRST
| JTAG_PINMSK_USR1
| JTAG_PINMSK_USR2
;
508 vsllink_usb_out_buffer
[2] = JTAG_PINMSK_SRST
| JTAG_PINMSK_TRST
;
509 if (vsllink_usb_write(vsllink_jtag_handle
, 3) != 3)
511 LOG_ERROR("VSLLink USB send data error");
517 LOG_INFO("VSLLink JTAG Interface ready");
524 int vsllink_quit(void)
526 if ((vsllink_usb_in_buffer
!= NULL
) && (vsllink_usb_out_buffer
!= NULL
))
528 // Set all pins to input
529 vsllink_usb_out_buffer
[0] = VSLLINK_CMD_SET_PORTDIR
;
530 vsllink_usb_out_buffer
[1] = JTAG_PINMSK_SRST
| JTAG_PINMSK_TRST
| JTAG_PINMSK_USR1
| JTAG_PINMSK_USR2
;
531 vsllink_usb_out_buffer
[2] = 0;
532 if (vsllink_usb_write(vsllink_jtag_handle
, 3) != 3)
534 LOG_ERROR("VSLLink USB send data error");
539 vsllink_simple_command(VSLLINK_CMD_DISCONN
);
540 vsllink_usb_close(vsllink_jtag_handle
);
543 if (vsllink_usb_in_buffer
!= NULL
)
545 free(vsllink_usb_in_buffer
);
547 if (vsllink_usb_out_buffer
!= NULL
)
549 free(vsllink_usb_out_buffer
);
554 // when vsllink_tms_data_len > 0, vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] is the byte that need to be appended.
555 // length of VSLLINK_CMDJTAGSEQ_TMSBYTE has been set, no need to set it here.
556 void vsllink_append_tms(void)
558 u8 tms_scan
= VSLLINK_TAP_MOVE(tap_get_state(), tap_get_end_state());
560 tap_state_t end_state
= tap_get_end_state();
562 if (((tap_get_state() != TAP_RESET
) && (tap_get_state() != TAP_IDLE
) && (tap_get_state() != TAP_DRPAUSE
) && (tap_get_state() != TAP_IRPAUSE
)) || \
563 (vsllink_tms_data_len
<= 0) || (vsllink_tms_data_len
>= 8) || \
564 (vsllink_tms_cmd_pos
== NULL
))
566 LOG_ERROR("There MUST be some bugs in the driver");
570 tms2
= (tms_scan
& VSLLINK_BIT_MSK
[VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT
[tap_move_ndx(tap_get_state())][tap_move_ndx(end_state
)].insert_position
]) << \
571 vsllink_tms_data_len
;
572 if (VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT
[tap_move_ndx(tap_get_state())][tap_move_ndx(end_state
)].insert_value
== 1)
574 tms2
|= VSLLINK_BIT_MSK
[8 - vsllink_tms_data_len
] << \
575 (vsllink_tms_data_len
+ VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT
[tap_move_ndx(tap_get_state())][tap_move_ndx(end_state
)].insert_position
);
577 tms2
|= (tms_scan
>> VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT
[tap_move_ndx(tap_get_state())][tap_move_ndx(end_state
)].insert_position
) << \
578 (8 + VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT
[tap_move_ndx(tap_get_state())][tap_move_ndx(end_state
)].insert_position
);
580 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] |= (tms2
>> 0) & 0xff;
581 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = (tms2
>> 8) & 0xff;
583 vsllink_tms_data_len
= 0;
584 vsllink_tms_cmd_pos
= NULL
;
587 /***************************************************************************/
588 /* Queue command implementations */
590 void vsllink_end_state(tap_state_t state
)
592 if (tap_is_state_stable(state
))
594 tap_set_end_state(state
);
598 LOG_ERROR("BUG: %i is not a valid end state", state
);
603 /* Goes to the end state. */
604 void vsllink_state_move(void)
606 if (vsllink_tms_data_len
> 0)
608 vsllink_append_tms();
612 vsllink_tap_ensure_space(0, 2);
614 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_TMSBYTE
;
615 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_TAP_MOVE(tap_get_state(), tap_get_end_state());
618 tap_set_state(tap_get_end_state());
621 // write tms from current vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx]
622 void vsllink_add_path(int start
, int num
, tap_state_t
*path
)
626 for (i
= start
; i
< (start
+ num
); i
++)
632 vsllink_usb_out_buffer_idx
++;
634 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] = 0;
637 if (path
[i
- start
] == tap_state_transition(tap_get_state(), TRUE
))
639 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] |= 1 << (i
& 7);
641 else if (path
[i
- start
] == tap_state_transition(tap_get_state(), FALSE
))
647 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(tap_get_state()), tap_state_name(path
[i
]));
650 tap_set_state(path
[i
- start
]);
652 if ((i
> 0) && ((i
& 7) == 0))
654 vsllink_usb_out_buffer_idx
++;
655 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] = 0;
658 tap_set_end_state(tap_get_state());
661 void vsllink_path_move(int num_states
, tap_state_t
*path
)
663 int i
, tms_len
, tms_cmd_pos
, path_idx
= 0;
665 if (vsllink_tms_data_len
> 0)
667 // there are vsllink_tms_data_len more tms bits to be shifted
668 // so there are vsllink_tms_data_len + num_states tms bits in all
669 tms_len
= vsllink_tms_data_len
+ num_states
;
672 // merge into last tms shift
675 // just append tms data to the last tms byte
676 vsllink_add_path(vsllink_tms_data_len
, num_states
, path
);
678 else if (tms_len
== 8)
680 // end last tms shift command
681 (*vsllink_tms_cmd_pos
)--;
682 vsllink_add_path(vsllink_tms_data_len
, num_states
, path
);
684 else if (tms_len
< 16)
686 if ((*vsllink_tms_cmd_pos
& VSLLINK_CMDJTAGSEQ_LENMSK
) < VSLLINK_CMDJTAGSEQ_LENMSK
)
688 // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most
689 // there is enought tms length in the current tms shift command
690 (*vsllink_tms_cmd_pos
)++;
691 vsllink_add_path(vsllink_tms_data_len
, num_states
, path
);
695 // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most
696 // not enough tms length in the current tms shift command
697 // so a new command should be added
698 // first decrease byte length of last tms shift command
699 (*vsllink_tms_cmd_pos
)--;
700 // append tms data to the last tms byte
701 vsllink_add_path(vsllink_tms_data_len
, 8 - vsllink_tms_data_len
, path
);
702 path
+= 8 - vsllink_tms_data_len
;
703 // add new command(3 bytes)
704 vsllink_tap_ensure_space(0, 3);
705 vsllink_tms_cmd_pos
= &vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
];
706 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_TMSBYTE
| 1;
707 vsllink_add_path(0, num_states
- (8 - vsllink_tms_data_len
), path
);
710 else if (tms_len
== 16)
712 // end last tms shift command
713 vsllink_add_path(vsllink_tms_data_len
, num_states
, path
);
716 vsllink_tms_data_len
= (vsllink_tms_data_len
+ num_states
) & 7;
717 if (vsllink_tms_data_len
== 0)
719 vsllink_tms_cmd_pos
= NULL
;
725 vsllink_add_path(vsllink_tms_data_len
, 16 - vsllink_tms_data_len
, path
);
727 path
+= 16 - vsllink_tms_data_len
;
728 num_states
-= 16 - vsllink_tms_data_len
;
729 vsllink_tms_data_len
= 0;
730 vsllink_tms_cmd_pos
= NULL
;
736 // Normal operation, don't need to append tms data
737 vsllink_tms_data_len
= num_states
& 7;
739 while (num_states
> 0)
741 if (num_states
> ((VSLLINK_CMDJTAGSEQ_LENMSK
+ 1) * 8))
743 i
= (VSLLINK_CMDJTAGSEQ_LENMSK
+ 1) * 8;
749 tms_len
= (i
+ 7) >> 3;
750 vsllink_tap_ensure_space(0, tms_len
+ 2);
751 tms_cmd_pos
= vsllink_usb_out_buffer_idx
;
752 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_TMSBYTE
| (tms_len
- 1);
754 vsllink_add_path(0, i
, path
+ path_idx
);
760 if (vsllink_tms_data_len
> 0)
762 if (tms_len
< (VSLLINK_CMDJTAGSEQ_LENMSK
+ 1))
764 vsllink_tms_cmd_pos
= &vsllink_usb_out_buffer
[tms_cmd_pos
];
765 (*vsllink_tms_cmd_pos
)++;
769 vsllink_usb_out_buffer
[tms_cmd_pos
]--;
771 tms_len
= vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
];
772 vsllink_tap_ensure_space(0, 3);
773 vsllink_tms_cmd_pos
= &vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
];
774 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_TMSBYTE
| 1;
775 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] = tms_len
;
781 void vsllink_stableclocks(int num_cycles
, int tms
)
786 if (vsllink_tms_data_len
> 0)
788 // there are vsllink_tms_data_len more tms bits to be shifted
789 // so there are vsllink_tms_data_len + num_cycles tms bits in all
790 tms_len
= vsllink_tms_data_len
+ num_cycles
;
793 // append '1' for tms
794 tms_append_byte
= (u16
)((((1 << num_cycles
) - 1) << vsllink_tms_data_len
) & 0xFFFF);
798 // append '0' for tms
803 // merge into last tms shift
806 // just add to vsllink_tms_data_len
807 // same result if tun through
808 //vsllink_tms_data_len += num_cycles;
809 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] |= (u8
)(tms_append_byte
& 0xFF);
811 else if (tms_len
== 8)
813 // end last tms shift command
814 // just reduce it, and append last tms byte
815 (*vsllink_tms_cmd_pos
)--;
816 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] |= (u8
)(tms_append_byte
& 0xFF);
818 else if (tms_len
< 16)
820 if ((*vsllink_tms_cmd_pos
& VSLLINK_CMDJTAGSEQ_LENMSK
) < VSLLINK_CMDJTAGSEQ_LENMSK
)
822 // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most
823 // there is enought tms length in the current tms shift command
824 // increase the tms byte length by 1 and set the last byte to 0
825 (*vsllink_tms_cmd_pos
)++;
826 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] |= (u8
)(tms_append_byte
& 0xFF);
827 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] = (u8
)(tms_append_byte
>> 8);
831 // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most
832 // not enough tms length in the current tms shift command
833 // so a new command should be added
834 // first decrease byte length of last tms shift command
835 (*vsllink_tms_cmd_pos
)--;
836 // append last tms byte and move the command pointer to the next empty position
837 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] |= (u8
)(tms_append_byte
& 0xFF);
838 // add new command(3 bytes)
839 vsllink_tap_ensure_space(0, 3);
840 vsllink_tms_cmd_pos
= &vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
];
841 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_TMSBYTE
| 1;
842 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] = (u8
)(tms_append_byte
>> 8);
845 else if (tms_len
== 16)
847 // end last tms shift command
848 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] |= (u8
)(tms_append_byte
& 0xFF);
849 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = (u8
)(tms_append_byte
>> 8);
852 vsllink_tms_data_len
= tms_len
& 7;
853 if (vsllink_tms_data_len
== 0)
855 vsllink_tms_cmd_pos
= NULL
;
861 // more shifts will be needed
862 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] |= (u8
)(tms_append_byte
& 0xFF);
863 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = (u8
)(tms_append_byte
>> 8);
865 num_cycles
-= 16 - vsllink_tms_data_len
;
866 vsllink_tms_data_len
= 0;
867 vsllink_tms_cmd_pos
= NULL
;
870 // from here vsllink_tms_data_len == 0 or num_cycles == 0
872 if (vsllink_tms_data_len
> 0)
878 LOG_ERROR("There MUST be some bugs in the driver");
884 // get number of bytes left to be sent
885 tms_len
= num_cycles
>> 3;
888 vsllink_tap_ensure_space(1, 5);
889 // if tms_len > 0, vsllink_tms_data_len == 0
890 // so just add new command
891 // LSB of the command byte is the tms value when do the shifting
894 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_TMSCLOCK
| 1;
898 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_TMSCLOCK
;
900 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = (tms_len
>> 0) & 0xff;
901 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = (tms_len
>> 8) & 0xff;
902 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = (tms_len
>> 16) & 0xff;
903 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = (tms_len
>> 24) & 0xff;
905 vsllink_usb_in_want_length
+= 1;
906 pending_scan_results_buffer
[pending_scan_results_length
].buffer
= NULL
;
907 pending_scan_results_length
++;
909 if (tms_len
> 0xFFFF)
911 vsllink_tap_execute();
916 vsllink_tms_data_len
= num_cycles
& 7;
917 if (vsllink_tms_data_len
> 0)
919 vsllink_tap_ensure_space(0, 3);
920 vsllink_tms_cmd_pos
= &vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
];
921 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_TMSBYTE
| 1;
924 // append '1' for tms
925 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] = (1 << vsllink_tms_data_len
) - 1;
929 // append '0' for tms
930 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] = 0x00;
936 void vsllink_runtest(int num_cycles
)
938 tap_state_t saved_end_state
= tap_get_end_state();
940 if (tap_get_state() != TAP_IDLE
)
942 // enter into IDLE state
943 vsllink_end_state(TAP_IDLE
);
944 vsllink_state_move();
947 vsllink_stableclocks(num_cycles
, 0);
951 vsllink_end_state(saved_end_state
);
952 tap_set_state(TAP_IDLE
);
953 if (tap_get_end_state() != TAP_IDLE
)
955 vsllink_state_move();
959 void vsllink_scan(int ir_scan
, enum scan_type type
, u8
*buffer
, int scan_size
, scan_command_t
*command
)
961 tap_state_t saved_end_state
;
962 u8 bits_left
, tms_tmp
, tdi_len
;
970 tdi_len
= ((scan_size
+ 7) >> 3);
971 if ((tdi_len
+ 7) > VSLLINK_BufferSize
)
973 LOG_ERROR("Your implementation of VSLLink has not enough buffer");
977 saved_end_state
= tap_get_end_state();
979 /* Move to appropriate scan state */
980 vsllink_end_state(ir_scan
? TAP_IRSHIFT
: TAP_DRSHIFT
);
982 if (vsllink_tms_data_len
> 0)
984 if (tap_get_state() == tap_get_end_state())
986 // already in IRSHIFT or DRSHIFT state
987 // merge tms data in the last tms shift command into next scan command
988 if(*vsllink_tms_cmd_pos
< 1)
990 LOG_ERROR("There MUST be some bugs in the driver");
993 else if(*vsllink_tms_cmd_pos
< 2)
995 tms_tmp
= vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
];
996 vsllink_usb_out_buffer_idx
--;
1000 tms_tmp
= vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
];
1001 *vsllink_tms_cmd_pos
-= 2;
1004 vsllink_tap_ensure_space(1, tdi_len
+ 7);
1005 // VSLLINK_CMDJTAGSEQ_SCAN ored by 1 means that tms_before is valid
1006 // which is merged from the last tms shift command
1007 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_SCAN
| 1;
1008 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = ((tdi_len
+ 1) >> 0) & 0xff;
1009 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = ((tdi_len
+ 1)>> 8) & 0xff;
1010 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = tms_tmp
;
1011 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = buffer
[0] << (8 - vsllink_tms_data_len
);
1013 for (i
= 0; i
< tdi_len
; i
++)
1015 buffer
[i
] >>= 8 - vsllink_tms_data_len
;
1018 buffer
[i
] += buffer
[i
+ 1] << vsllink_tms_data_len
;
1022 vsllink_tap_append_scan(scan_size
- vsllink_tms_data_len
, buffer
, command
, vsllink_tms_data_len
);
1023 scan_size
-= 8 - vsllink_tms_data_len
;
1024 vsllink_tms_data_len
= 0;
1028 vsllink_append_tms();
1029 vsllink_tap_ensure_space(1, tdi_len
+ 5);
1031 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_SCAN
;
1032 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = (tdi_len
>> 0) & 0xff;
1033 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = (tdi_len
>> 8) & 0xff;
1035 vsllink_tap_append_scan(scan_size
, buffer
, command
, 0);
1040 vsllink_tap_ensure_space(1, tdi_len
+ 7);
1042 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_SCAN
| 1;
1043 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = ((tdi_len
+ 1) >> 0) & 0xff;
1044 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = ((tdi_len
+ 1)>> 8) & 0xff;
1045 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_TAP_MOVE(tap_get_state(), tap_get_end_state());
1046 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = 0;
1048 vsllink_tap_append_scan(scan_size
, buffer
, command
, 8);
1050 vsllink_end_state(saved_end_state
);
1052 bits_left
= scan_size
& 0x07;
1053 tap_set_state(ir_scan
? TAP_IRPAUSE
: TAP_DRPAUSE
);
1057 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = 1 << (bits_left
- 1);
1061 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = 1 << 7;
1064 if (tap_get_state() != tap_get_end_state())
1066 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_TAP_MOVE(tap_get_state(), tap_get_end_state());
1070 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = 0;
1073 tap_set_state(tap_get_end_state());
1076 void vsllink_reset(int trst
, int srst
)
1080 LOG_DEBUG("trst: %i, srst: %i", trst
, srst
);
1082 /* Signals are active low */
1083 vsllink_usb_out_buffer
[0] = VSLLINK_CMD_SET_PORT
;
1084 vsllink_usb_out_buffer
[1] = JTAG_PINMSK_SRST
| JTAG_PINMSK_TRST
;
1085 vsllink_usb_out_buffer
[2] = 0;
1088 vsllink_usb_out_buffer
[2] |= JTAG_PINMSK_SRST
;
1092 vsllink_usb_out_buffer
[2] |= JTAG_PINMSK_TRST
;
1095 result
= vsllink_usb_write(vsllink_jtag_handle
, 3);
1098 LOG_ERROR("VSLLink command VSLLINK_CMD_SET_PORT failed (%d)", result
);
1102 void vsllink_simple_command(u8 command
)
1106 DEBUG_JTAG_IO("0x%02x", command
);
1108 vsllink_usb_out_buffer
[0] = command
;
1109 result
= vsllink_usb_write(vsllink_jtag_handle
, 1);
1113 LOG_ERROR("VSLLink command 0x%02x failed (%d)", command
, result
);
1117 int vsllink_handle_usb_vid_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1120 LOG_ERROR("parameter error, should be one parameter for VID");
1124 vsllink_vid
= strtol(args
[0], NULL
, 0);
1129 int vsllink_handle_usb_pid_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1132 LOG_ERROR("parameter error, should be one parameter for PID");
1136 vsllink_pid
= strtol(args
[0], NULL
, 0);
1141 int vsllink_handle_usb_bulkin_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1144 LOG_ERROR("parameter error, should be one parameter for BULKIN endpoint");
1148 vsllink_bulkin
= strtol(args
[0], NULL
, 0) | 0x80;
1153 int vsllink_handle_usb_bulkout_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1156 LOG_ERROR("parameter error, should be one parameter for BULKOUT endpoint");
1160 vsllink_bulkout
= strtol(args
[0], NULL
, 0);
1165 /***************************************************************************/
1166 /* VSLLink tap functions */
1168 void vsllink_tap_init(void)
1170 vsllink_usb_out_buffer_idx
= 0;
1171 vsllink_usb_in_want_length
= 0;
1172 pending_scan_results_length
= 0;
1175 void vsllink_tap_ensure_space(int scans
, int bytes
)
1177 int available_scans
= MAX_PENDING_SCAN_RESULTS
- pending_scan_results_length
;
1178 int available_bytes
= VSLLINK_BufferSize
- vsllink_usb_out_buffer_idx
;
1180 if (scans
> available_scans
|| bytes
> available_bytes
)
1182 vsllink_tap_execute();
1186 void vsllink_tap_append_scan(int length
, u8
*buffer
, scan_command_t
*command
, int offset
)
1188 pending_scan_result_t
*pending_scan_result
= &pending_scan_results_buffer
[pending_scan_results_length
];
1193 vsllink_usb_in_want_length
+= ((length
+ 7) >> 3) + 1;
1197 vsllink_usb_in_want_length
+= (length
+ 7) >> 3;
1199 pending_scan_result
->length
= length
;
1200 pending_scan_result
->offset
= offset
;
1201 pending_scan_result
->command
= command
;
1202 pending_scan_result
->buffer
= buffer
;
1204 for (i
= 0; i
< ((length
+ 7) >> 3); i
++)
1206 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = buffer
[i
];
1209 pending_scan_results_length
++;
1212 /* Pad and send a tap sequence to the device, and receive the answer.
1213 * For the purpose of padding we assume that we are in reset or idle or pause state. */
1214 int vsllink_tap_execute(void)
1220 if (vsllink_tms_data_len
> 0)
1222 if((tap_get_state() != TAP_RESET
) && (tap_get_state() != TAP_IDLE
) && (tap_get_state() != TAP_IRPAUSE
) && (tap_get_state() != TAP_DRPAUSE
))
1224 LOG_WARNING("%s is not in RESET or IDLE or PAUSR state", tap_state_name(tap_get_state()));
1227 if (vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] & (1 << (vsllink_tms_data_len
- 1)))
1229 // last tms bit is '1'
1230 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] |= 0xFF << vsllink_tms_data_len
;
1231 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = 0xFF;
1232 vsllink_tms_data_len
= 0;
1236 // last tms bit is '0'
1237 vsllink_usb_out_buffer_idx
++;
1238 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = 0;
1239 vsllink_tms_data_len
= 0;
1243 if (vsllink_usb_out_buffer_idx
> 3)
1245 if (vsllink_usb_out_buffer
[0] == VSLLINK_CMD_HW_JTAGSEQCMD
)
1247 vsllink_usb_out_buffer
[1] = (vsllink_usb_out_buffer_idx
>> 0) & 0xff;
1248 vsllink_usb_out_buffer
[2] = (vsllink_usb_out_buffer_idx
>> 8) & 0xff;
1251 result
= vsllink_usb_message(vsllink_jtag_handle
, vsllink_usb_out_buffer_idx
, vsllink_usb_in_want_length
);
1253 if (result
== vsllink_usb_in_want_length
)
1255 for (i
= 0; i
< pending_scan_results_length
; i
++)
1257 pending_scan_result_t
*pending_scan_result
= &pending_scan_results_buffer
[i
];
1258 u8
*buffer
= pending_scan_result
->buffer
;
1259 int length
= pending_scan_result
->length
;
1260 int offset
= pending_scan_result
->offset
;
1261 scan_command_t
*command
= pending_scan_result
->command
;
1265 // IRSHIFT or DRSHIFT
1266 buf_set_buf(vsllink_usb_in_buffer
, first
* 8 + offset
, buffer
, 0, length
);
1267 first
+= (length
+ offset
+ 7) >> 3;
1269 DEBUG_JTAG_IO("JTAG scan read(%d bits):", length
);
1270 #ifdef _DEBUG_JTAG_IO_
1271 vsllink_debug_buffer(buffer
, (length
+ 7) >> 3);
1274 if (jtag_read_buffer(buffer
, command
) != ERROR_OK
)
1277 return ERROR_JTAG_QUEUE_FAILED
;
1280 free(pending_scan_result
->buffer
);
1281 pending_scan_result
->buffer
= NULL
;
1291 LOG_ERROR("vsllink_tap_execute, wrong result %d, expected %d", result
, vsllink_usb_in_want_length
);
1292 return ERROR_JTAG_QUEUE_FAILED
;
1298 vsllink_usb_out_buffer
[0] = VSLLINK_CMD_HW_JTAGSEQCMD
;
1299 vsllink_usb_out_buffer_idx
= 3;
1304 /*****************************************************************************/
1305 /* VSLLink USB low-level functions */
1307 vsllink_jtag_t
* vsllink_usb_open(void)
1309 struct usb_bus
*busses
;
1310 struct usb_bus
*bus
;
1311 struct usb_device
*dev
;
1313 vsllink_jtag_t
*result
;
1315 result
= (vsllink_jtag_t
*) malloc(sizeof(vsllink_jtag_t
));
1321 busses
= usb_get_busses();
1323 /* find vsllink_jtag device in usb bus */
1325 for (bus
= busses
; bus
; bus
= bus
->next
)
1327 for (dev
= bus
->devices
; dev
; dev
= dev
->next
)
1329 if ((dev
->descriptor
.idVendor
== vsllink_vid
) && (dev
->descriptor
.idProduct
== vsllink_pid
))
1331 result
->usb_handle
= usb_open(dev
);
1333 /* usb_set_configuration required under win32 */
1334 usb_set_configuration(result
->usb_handle
, dev
->config
[0].bConfigurationValue
);
1335 usb_claim_interface(result
->usb_handle
, 0);
1339 * This makes problems under Mac OS X. And is not needed
1340 * under Windows. Hopefully this will not break a linux build
1342 usb_set_altinterface(result
->usb_handle
, 0);
1353 void vsllink_usb_close(vsllink_jtag_t
*vsllink_jtag
)
1355 usb_close(vsllink_jtag
->usb_handle
);
1359 /* Send a message and receive the reply. */
1360 int vsllink_usb_message(vsllink_jtag_t
*vsllink_jtag
, int out_length
, int in_length
)
1364 result
= vsllink_usb_write(vsllink_jtag
, out_length
);
1365 if (result
== out_length
)
1369 result
= vsllink_usb_read(vsllink_jtag
);
1370 if (result
== in_length
)
1376 LOG_ERROR("usb_bulk_read failed (requested=%d, result=%d)", in_length
, result
);
1384 LOG_ERROR("usb_bulk_write failed (requested=%d, result=%d)", out_length
, result
);
1389 /* Write data from out_buffer to USB. */
1390 int vsllink_usb_write(vsllink_jtag_t
*vsllink_jtag
, int out_length
)
1394 if (out_length
> VSLLINK_BufferSize
)
1396 LOG_ERROR("vsllink_jtag_write illegal out_length=%d (max=%d)", out_length
, VSLLINK_BufferSize
);
1400 result
= usb_bulk_write(vsllink_jtag
->usb_handle
, vsllink_bulkout
, \
1401 (char *)vsllink_usb_out_buffer
, out_length
, VSLLINK_USB_TIMEOUT
);
1403 DEBUG_JTAG_IO("vsllink_usb_write, out_length = %d, result = %d", out_length
, result
);
1405 #ifdef _DEBUG_USB_COMMS_
1406 LOG_DEBUG("USB out:");
1407 vsllink_debug_buffer(vsllink_usb_out_buffer
, out_length
);
1410 #ifdef _VSLLINK_IN_DEBUG_MODE_
1417 /* Read data from USB into in_buffer. */
1418 int vsllink_usb_read(vsllink_jtag_t
*vsllink_jtag
)
1420 int result
= usb_bulk_read(vsllink_jtag
->usb_handle
, vsllink_bulkin
, \
1421 (char *)vsllink_usb_in_buffer
, VSLLINK_BufferSize
, VSLLINK_USB_TIMEOUT
);
1423 DEBUG_JTAG_IO("vsllink_usb_read, result = %d", result
);
1425 #ifdef _DEBUG_USB_COMMS_
1426 LOG_DEBUG("USB in:");
1427 vsllink_debug_buffer(vsllink_usb_in_buffer
, result
);
1432 #define BYTES_PER_LINE 16
1434 void vsllink_debug_buffer(u8
*buffer
, int length
)
1441 for (i
= 0; i
< length
; i
+= BYTES_PER_LINE
)
1443 snprintf(line
, 5, "%04x", i
);
1444 for (j
= i
; j
< i
+ BYTES_PER_LINE
&& j
< length
; j
++)
1446 snprintf(s
, 4, " %02x", buffer
[j
]);