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 "interface.h"
35 //#define _VSLLINK_IN_DEBUG_MODE_
37 #define VSLLINK_MODE_NORMAL 0
38 #define VSLLINK_MODE_DMA 1
40 static uint16_t vsllink_usb_vid
;
41 static uint16_t vsllink_usb_pid
;
42 static uint8_t vsllink_usb_bulkout
;
43 static uint8_t vsllink_usb_bulkin
;
44 static uint8_t vsllink_usb_interface
;
45 static uint8_t vsllink_mode
= VSLLINK_MODE_NORMAL
;
46 static int VSLLINK_USB_TIMEOUT
= 10000;
48 static int VSLLINK_BufferSize
= 1024;
50 /* Global USB buffers */
51 static int vsllink_usb_out_buffer_idx
;
52 static int vsllink_usb_in_want_length
;
53 static uint8_t* vsllink_usb_in_buffer
= NULL
;
54 static uint8_t* vsllink_usb_out_buffer
= NULL
;
56 /* Constants for VSLLink command */
57 #define VSLLINK_CMD_CONN 0x80
58 #define VSLLINK_CMD_DISCONN 0x81
59 #define VSLLINK_CMD_SET_SPEED 0x82
60 #define VSLLINK_CMD_SET_PORT 0x90
61 #define VSLLINK_CMD_GET_PORT 0x91
62 #define VSLLINK_CMD_SET_PORTDIR 0x92
63 #define VSLLINK_CMD_HW_JTAGSEQCMD 0xA0
64 #define VSLLINK_CMD_HW_JTAGHLCMD 0xA1
65 #define VSLLINK_CMD_HW_SWDCMD 0xA2
66 #define VSLLINK_CMD_HW_JTAGRAWCMD 0xA3
68 #define VSLLINK_CMDJTAGSEQ_TMSBYTE 0x00
69 #define VSLLINK_CMDJTAGSEQ_TMSCLOCK 0x40
70 #define VSLLINK_CMDJTAGSEQ_SCAN 0x80
72 #define VSLLINK_CMDJTAGSEQ_CMDMSK 0xC0
73 #define VSLLINK_CMDJTAGSEQ_LENMSK 0x3F
75 #define JTAG_PINMSK_SRST (1 << 0)
76 #define JTAG_PINMSK_TRST (1 << 1)
77 #define JTAG_PINMSK_USR1 (1 << 2)
78 #define JTAG_PINMSK_USR2 (1 << 3)
79 #define JTAG_PINMSK_TCK (1 << 4)
80 #define JTAG_PINMSK_TMS (1 << 5)
81 #define JTAG_PINMSK_TDI (1 << 6)
82 #define JTAG_PINMSK_TDO (1 << 7)
85 #define VSLLINK_TAP_MOVE(from, to) VSLLINK_tap_move[tap_move_ndx(from)][tap_move_ndx(to)]
87 /* VSLLINK_tap_move[i][j]: tap movement command to go from state i to state j
95 * SD->SD and SI->SI have to be caught in interface specific code
97 static uint8_t VSLLINK_tap_move
[6][6] =
99 /* TLR RTI SD PD SI PI */
100 {0xff, 0x7f, 0x2f, 0x0a, 0x37, 0x16}, /* TLR */
101 {0xff, 0x00, 0x45, 0x05, 0x4b, 0x0b}, /* RTI */
102 {0xff, 0x61, 0x00, 0x01, 0x0f, 0x2f}, /* SD */
103 {0xfe, 0x60, 0x40, 0x5c, 0x3c, 0x5e}, /* PD */
104 {0xff, 0x61, 0x07, 0x17, 0x00, 0x01}, /* SI */
105 {0xfe, 0x60, 0x38, 0x5c, 0x40, 0x5e} /* PI */
108 typedef struct insert_insignificant_operation
110 unsigned char insert_value
;
111 unsigned char insert_position
;
112 }insert_insignificant_operation_t
;
114 static insert_insignificant_operation_t VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT
[6][6] =
161 static uint8_t VSLLINK_BIT_MSK
[8] =
163 0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f
169 int length
; /* Number of bits to read */
170 scan_command_t
*command
; /* Corresponding scan command */
172 } pending_scan_result_t
;
174 #define MAX_PENDING_SCAN_RESULTS 256
176 static int pending_scan_results_length
;
177 static pending_scan_result_t pending_scan_results_buffer
[MAX_PENDING_SCAN_RESULTS
];
179 /* Queue command functions */
180 static void vsllink_end_state(tap_state_t state
);
181 static void vsllink_state_move_dma(void);
182 static void vsllink_state_move_normal(void);
183 static void (*vsllink_state_move
)(void);
184 static void vsllink_path_move_dma(int num_states
, tap_state_t
*path
);
185 static void vsllink_path_move_normal(int num_states
, tap_state_t
*path
);
186 static void (*vsllink_path_move
)(int num_states
, tap_state_t
*path
);
187 static void vsllink_runtest(int num_cycles
);
188 static void vsllink_stableclocks_dma(int num_cycles
, int tms
);
189 static void vsllink_stableclocks_normal(int num_cycles
, int tms
);
190 static void (*vsllink_stableclocks
)(int num_cycles
, int tms
);
191 static void vsllink_scan_dma(bool ir_scan
, enum scan_type type
, uint8_t *buffer
, int scan_size
, scan_command_t
*command
);
192 static void vsllink_scan_normal(bool ir_scan
, enum scan_type type
, uint8_t *buffer
, int scan_size
, scan_command_t
*command
);
193 static void (*vsllink_scan
)(bool ir_scan
, enum scan_type type
, uint8_t *buffer
, int scan_size
, scan_command_t
*command
);
194 static void vsllink_reset(int trst
, int srst
);
195 static void vsllink_simple_command(uint8_t command
);
196 static int vsllink_connect(void);
197 static int vsllink_disconnect(void);
199 /* VSLLink tap buffer functions */
200 static void vsllink_tap_append_step(int tms
, int tdi
);
201 static void vsllink_tap_init_dma(void);
202 static void vsllink_tap_init_normal(void);
203 static void (*vsllink_tap_init
)(void);
204 static int vsllink_tap_execute_dma(void);
205 static int vsllink_tap_execute_normal(void);
206 static int (*vsllink_tap_execute
)(void);
207 static void vsllink_tap_ensure_space_dma(int scans
, int length
);
208 static void vsllink_tap_ensure_space_normal(int scans
, int length
);
209 static void (*vsllink_tap_ensure_space
)(int scans
, int length
);
210 static void vsllink_tap_append_scan_dma(int length
, uint8_t *buffer
, scan_command_t
*command
);
211 static void vsllink_tap_append_scan_normal(int length
, uint8_t *buffer
, scan_command_t
*command
, int offset
);
213 /* VSLLink lowlevel functions */
214 typedef struct vsllink_jtag
216 struct usb_dev_handle
* usb_handle
;
219 static vsllink_jtag_t
*vsllink_usb_open(void);
220 static void vsllink_usb_close(vsllink_jtag_t
*vsllink_jtag
);
221 static int vsllink_usb_message(vsllink_jtag_t
*vsllink_jtag
, int out_length
, int in_length
);
222 static int vsllink_usb_write(vsllink_jtag_t
*vsllink_jtag
, int out_length
);
223 static int vsllink_usb_read(vsllink_jtag_t
*vsllink_jtag
);
225 #if defined _DEBUG_USB_COMMS_ || defined _DEBUG_JTAG_IO_
226 static void vsllink_debug_buffer(uint8_t *buffer
, int length
);
229 static int vsllink_tms_data_len
= 0;
230 static uint8_t* vsllink_tms_cmd_pos
;
232 static int tap_length
= 0;
233 static int tap_buffer_size
= 0;
234 static uint8_t *tms_buffer
= NULL
;
235 static uint8_t *tdi_buffer
= NULL
;
236 static uint8_t *tdo_buffer
= NULL
;
239 static vsllink_jtag_t
* vsllink_jtag_handle
= NULL
;
241 static void reset_command_pointer(void)
243 if (vsllink_mode
== VSLLINK_MODE_NORMAL
)
245 vsllink_usb_out_buffer
[0] = VSLLINK_CMD_HW_JTAGSEQCMD
;
246 vsllink_usb_out_buffer_idx
= 3;
254 static int vsllink_execute_queue(void)
256 jtag_command_t
*cmd
= jtag_command_queue
;
261 DEBUG_JTAG_IO("--------------------------------- vsllink -------------------------------------");
263 reset_command_pointer();
269 DEBUG_JTAG_IO("runtest %i cycles, end in %s", cmd
->cmd
.runtest
->num_cycles
, \
270 tap_state_name(cmd
->cmd
.runtest
->end_state
));
272 vsllink_end_state(cmd
->cmd
.runtest
->end_state
);
273 vsllink_runtest(cmd
->cmd
.runtest
->num_cycles
);
277 DEBUG_JTAG_IO("statemove end in %s", tap_state_name(cmd
->cmd
.statemove
->end_state
));
279 vsllink_end_state(cmd
->cmd
.statemove
->end_state
);
280 vsllink_state_move();
284 DEBUG_JTAG_IO("pathmove: %i states, end in %s", \
285 cmd
->cmd
.pathmove
->num_states
, \
286 tap_state_name(cmd
->cmd
.pathmove
->path
[cmd
->cmd
.pathmove
->num_states
- 1]));
288 vsllink_path_move(cmd
->cmd
.pathmove
->num_states
, cmd
->cmd
.pathmove
->path
);
292 vsllink_end_state(cmd
->cmd
.scan
->end_state
);
294 scan_size
= jtag_build_buffer(cmd
->cmd
.scan
, &buffer
);
295 if (cmd
->cmd
.scan
->ir_scan
)
297 DEBUG_JTAG_IO("JTAG Scan write IR(%d bits), end in %s:", scan_size
, tap_state_name(cmd
->cmd
.scan
->end_state
));
301 DEBUG_JTAG_IO("JTAG Scan write DR(%d bits), end in %s:", scan_size
, tap_state_name(cmd
->cmd
.scan
->end_state
));
304 #ifdef _DEBUG_JTAG_IO_
305 vsllink_debug_buffer(buffer
, (scan_size
+ 7) >> 3);
308 type
= jtag_scan_type(cmd
->cmd
.scan
);
310 vsllink_scan(cmd
->cmd
.scan
->ir_scan
, type
, buffer
, scan_size
, cmd
->cmd
.scan
);
314 DEBUG_JTAG_IO("reset trst: %i srst %i", cmd
->cmd
.reset
->trst
, cmd
->cmd
.reset
->srst
);
316 vsllink_tap_execute();
318 if (cmd
->cmd
.reset
->trst
== 1)
320 tap_set_state(TAP_RESET
);
322 vsllink_reset(cmd
->cmd
.reset
->trst
, cmd
->cmd
.reset
->srst
);
326 DEBUG_JTAG_IO("sleep %i", cmd
->cmd
.sleep
->us
);
327 vsllink_tap_execute();
328 jtag_sleep(cmd
->cmd
.sleep
->us
);
331 case JTAG_STABLECLOCKS
:
332 DEBUG_JTAG_IO("add %d clocks", cmd
->cmd
.stableclocks
->num_cycles
);
333 switch (tap_get_state())
336 // tms should be '1' to stay in TAP_RESET mode
344 // in other mode, tms should be '0'
346 break; /* above stable states are OK */
348 LOG_ERROR("jtag_add_clocks() was called with TAP in non-stable state \"%s\"",
349 tap_state_name(tap_get_state()));
352 vsllink_stableclocks(cmd
->cmd
.stableclocks
->num_cycles
, scan_size
);
356 LOG_ERROR("BUG: unknown JTAG command type encountered: %d", cmd
->type
);
362 return vsllink_tap_execute();
365 static int vsllink_speed(int speed
)
369 vsllink_usb_out_buffer
[0] = VSLLINK_CMD_SET_SPEED
;
370 vsllink_usb_out_buffer
[1] = (speed
>> 0) & 0xff;
371 vsllink_usb_out_buffer
[2] = (speed
>> 8) & 0xFF;
373 result
= vsllink_usb_write(vsllink_jtag_handle
, 3);
381 LOG_ERROR("VSLLink setting speed failed (%d)", result
);
382 return ERROR_JTAG_DEVICE_ERROR
;
388 static int vsllink_khz(int khz
, int *jtag_speed
)
395 static int vsllink_speed_div(int jtag_speed
, int *khz
)
402 static int vsllink_init(void)
404 int check_cnt
, to_tmp
;
406 char version_str
[100];
408 vsllink_usb_in_buffer
= malloc(VSLLINK_BufferSize
);
409 vsllink_usb_out_buffer
= malloc(VSLLINK_BufferSize
);
410 if ((vsllink_usb_in_buffer
== NULL
) || (vsllink_usb_out_buffer
== NULL
))
412 LOG_ERROR("Not enough memory");
416 vsllink_jtag_handle
= vsllink_usb_open();
418 if (vsllink_jtag_handle
== 0)
420 LOG_ERROR("Can't find USB JTAG Interface! Please check connection and permissions.");
421 return ERROR_JTAG_INIT_FAILED
;
423 LOG_DEBUG("vsllink found on %04X:%04X", vsllink_usb_vid
, vsllink_usb_pid
);
425 to_tmp
= VSLLINK_USB_TIMEOUT
;
426 VSLLINK_USB_TIMEOUT
= 100;
428 while (check_cnt
< 5)
430 vsllink_simple_command(0x00);
431 result
= vsllink_usb_read(vsllink_jtag_handle
);
435 vsllink_usb_in_buffer
[result
] = 0;
436 VSLLINK_BufferSize
= vsllink_usb_in_buffer
[0] + (vsllink_usb_in_buffer
[1] << 8);
437 strncpy(version_str
, (char *)vsllink_usb_in_buffer
+ 2, sizeof(version_str
));
438 LOG_INFO("%s", version_str
);
440 // free the pre-alloc memroy
441 free(vsllink_usb_in_buffer
);
442 free(vsllink_usb_out_buffer
);
443 vsllink_usb_in_buffer
= NULL
;
444 vsllink_usb_out_buffer
= NULL
;
447 vsllink_usb_in_buffer
= malloc(VSLLINK_BufferSize
);
448 vsllink_usb_out_buffer
= malloc(VSLLINK_BufferSize
);
449 if ((vsllink_usb_in_buffer
== NULL
) || (vsllink_usb_out_buffer
== NULL
))
451 LOG_ERROR("Not enough memory");
456 LOG_INFO("buffer size for USB is %d bytes", VSLLINK_BufferSize
);
458 // alloc memory for dma mode
459 if (vsllink_mode
== VSLLINK_MODE_DMA
)
461 tap_buffer_size
= (VSLLINK_BufferSize
- 3) / 2;
462 tms_buffer
= (uint8_t*)malloc(tap_buffer_size
);
463 tdi_buffer
= (uint8_t*)malloc(tap_buffer_size
);
464 tdo_buffer
= (uint8_t*)malloc(tap_buffer_size
);
465 if ((tms_buffer
== NULL
) || (tdi_buffer
== NULL
) || (tdo_buffer
== NULL
))
467 LOG_ERROR("Not enough memory");
473 vsllink_simple_command(VSLLINK_CMD_DISCONN
);
478 // It's dangerout to proced
479 LOG_ERROR("VSLLink initial failed");
482 VSLLINK_USB_TIMEOUT
= to_tmp
;
484 // connect to vsllink
486 // initialize function pointers
487 if (vsllink_mode
== VSLLINK_MODE_NORMAL
)
490 vsllink_state_move
= vsllink_state_move_normal
;
491 vsllink_path_move
= vsllink_path_move_normal
;
492 vsllink_stableclocks
= vsllink_stableclocks_normal
;
493 vsllink_scan
= vsllink_scan_normal
;
495 vsllink_tap_init
= vsllink_tap_init_normal
;
496 vsllink_tap_execute
= vsllink_tap_execute_normal
;
497 vsllink_tap_ensure_space
= vsllink_tap_ensure_space_normal
;
499 LOG_INFO("vsllink run in NORMAL mode");
504 vsllink_state_move
= vsllink_state_move_dma
;
505 vsllink_path_move
= vsllink_path_move_dma
;
506 vsllink_stableclocks
= vsllink_stableclocks_dma
;
507 vsllink_scan
= vsllink_scan_dma
;
509 vsllink_tap_init
= vsllink_tap_init_dma
;
510 vsllink_tap_execute
= vsllink_tap_execute_dma
;
511 vsllink_tap_ensure_space
= vsllink_tap_ensure_space_dma
;
513 LOG_INFO("vsllink run in DMA mode");
516 // Set SRST and TRST to output, Set USR1 and USR2 to input
517 vsllink_usb_out_buffer
[0] = VSLLINK_CMD_SET_PORTDIR
;
518 vsllink_usb_out_buffer
[1] = JTAG_PINMSK_SRST
| JTAG_PINMSK_TRST
| JTAG_PINMSK_USR1
| JTAG_PINMSK_USR2
;
519 vsllink_usb_out_buffer
[2] = JTAG_PINMSK_SRST
| JTAG_PINMSK_TRST
;
520 if (vsllink_usb_write(vsllink_jtag_handle
, 3) != 3)
522 LOG_ERROR("VSLLink USB send data error");
528 LOG_INFO("VSLLink JTAG Interface ready");
535 static int vsllink_quit(void)
537 if ((vsllink_usb_in_buffer
!= NULL
) && (vsllink_usb_out_buffer
!= NULL
))
539 // Set all pins to input
540 vsllink_usb_out_buffer
[0] = VSLLINK_CMD_SET_PORTDIR
;
541 vsllink_usb_out_buffer
[1] = JTAG_PINMSK_SRST
| JTAG_PINMSK_TRST
| JTAG_PINMSK_USR1
| JTAG_PINMSK_USR2
;
542 vsllink_usb_out_buffer
[2] = 0;
543 if (vsllink_usb_write(vsllink_jtag_handle
, 3) != 3)
545 LOG_ERROR("VSLLink USB send data error");
550 vsllink_disconnect();
551 vsllink_usb_close(vsllink_jtag_handle
);
552 vsllink_jtag_handle
= NULL
;
555 if (vsllink_usb_in_buffer
!= NULL
)
557 free(vsllink_usb_in_buffer
);
558 vsllink_usb_in_buffer
= NULL
;
560 if (vsllink_usb_out_buffer
!= NULL
)
562 free(vsllink_usb_out_buffer
);
563 vsllink_usb_out_buffer
= NULL
;
569 /***************************************************************************/
570 /* Queue command implementations */
571 static int vsllink_disconnect(void)
573 vsllink_simple_command(VSLLINK_CMD_DISCONN
);
577 static int vsllink_connect(void)
579 char vsllink_str
[100];
581 vsllink_usb_out_buffer
[0] = VSLLINK_CMD_CONN
;
582 vsllink_usb_out_buffer
[1] = vsllink_mode
;
583 vsllink_usb_message(vsllink_jtag_handle
, 2, 0);
584 if (vsllink_usb_read(vsllink_jtag_handle
) > 2)
586 strncpy(vsllink_str
, (char *)vsllink_usb_in_buffer
+ 2, sizeof(vsllink_str
));
587 LOG_INFO("%s", vsllink_str
);
593 // when vsllink_tms_data_len > 0, vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] is the byte that need to be appended.
594 // length of VSLLINK_CMDJTAGSEQ_TMSBYTE has been set, no need to set it here.
595 static void vsllink_append_tms(void)
597 uint8_t tms_scan
= VSLLINK_TAP_MOVE(tap_get_state(), tap_get_end_state());
599 insert_insignificant_operation_t
*insert
= \
600 &VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT
[tap_move_ndx(tap_get_state())][tap_move_ndx(tap_get_end_state())];
602 if (((tap_get_state() != TAP_RESET
) && (tap_get_state() != TAP_IDLE
) && (tap_get_state() != TAP_DRPAUSE
) && (tap_get_state() != TAP_IRPAUSE
)) || \
603 (vsllink_tms_data_len
<= 0) || (vsllink_tms_data_len
>= 8) || \
604 (vsllink_tms_cmd_pos
== NULL
))
606 LOG_ERROR("There MUST be some bugs in the driver");
610 tms2
= (tms_scan
& VSLLINK_BIT_MSK
[insert
->insert_position
]) << \
611 vsllink_tms_data_len
;
612 if (insert
->insert_value
== 1)
614 tms2
|= VSLLINK_BIT_MSK
[8 - vsllink_tms_data_len
] << \
615 (vsllink_tms_data_len
+ insert
->insert_position
);
617 tms2
|= (tms_scan
>> insert
->insert_position
) << \
618 (8 + insert
->insert_position
);
620 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] |= (tms2
>> 0) & 0xff;
621 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = (tms2
>> 8) & 0xff;
623 vsllink_tms_data_len
= 0;
624 vsllink_tms_cmd_pos
= NULL
;
627 static void vsllink_end_state(tap_state_t state
)
629 if (tap_is_state_stable(state
))
631 tap_set_end_state(state
);
635 LOG_ERROR("BUG: %i is not a valid end state", state
);
640 /* Goes to the end state. */
641 static void vsllink_state_move_normal(void)
643 if (vsllink_tms_data_len
> 0)
645 vsllink_append_tms();
649 vsllink_tap_ensure_space(0, 2);
651 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_TMSBYTE
;
652 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_TAP_MOVE(tap_get_state(), tap_get_end_state());
655 tap_set_state(tap_get_end_state());
657 static void vsllink_state_move_dma(void)
659 int i
, insert_length
= (tap_length
% 8) ? (8 - (tap_length
% 8)) : 0;
660 insert_insignificant_operation_t
*insert
= \
661 &VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT
[tap_move_ndx(tap_get_state())][tap_move_ndx(tap_get_end_state())];
662 uint8_t tms_scan
= VSLLINK_TAP_MOVE(tap_get_state(), tap_get_end_state());
664 if (tap_get_state() == TAP_RESET
)
666 vsllink_tap_ensure_space(0, 8);
668 for (i
= 0; i
< 8; i
++)
670 vsllink_tap_append_step(1, 0);
674 if (insert_length
> 0)
676 vsllink_tap_ensure_space(0, 16);
678 for (i
= 0; i
< insert
->insert_position
; i
++)
680 vsllink_tap_append_step((tms_scan
>> i
) & 1, 0);
682 for (i
= 0; i
< insert_length
; i
++)
684 vsllink_tap_append_step(insert
->insert_value
, 0);
686 for (i
= insert
->insert_position
; i
< 8; i
++)
688 vsllink_tap_append_step((tms_scan
>> i
) & 1, 0);
693 vsllink_tap_ensure_space(0, 8);
695 for (i
= 0; i
< 8; i
++)
697 vsllink_tap_append_step((tms_scan
>> i
) & 1, 0);
701 tap_set_state(tap_get_end_state());
704 // write tms from current vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx]
705 static void vsllink_add_path(int start
, int num
, tap_state_t
*path
)
709 for (i
= start
; i
< (start
+ num
); i
++)
715 vsllink_usb_out_buffer_idx
++;
717 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] = 0;
720 if (path
[i
- start
] == tap_state_transition(tap_get_state(), true))
722 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] |= 1 << (i
& 7);
724 else if (path
[i
- start
] == tap_state_transition(tap_get_state(), false))
730 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(tap_get_state()), tap_state_name(path
[i
]));
733 tap_set_state(path
[i
- start
]);
735 if ((i
> 0) && ((i
& 7) == 0))
737 vsllink_usb_out_buffer_idx
++;
738 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] = 0;
741 tap_set_end_state(tap_get_state());
744 static void vsllink_path_move_normal(int num_states
, tap_state_t
*path
)
746 int i
, tms_len
, tms_cmd_pos
, path_idx
= 0;
748 if (vsllink_tms_data_len
> 0)
750 // there are vsllink_tms_data_len more tms bits to be shifted
751 // so there are vsllink_tms_data_len + num_states tms bits in all
752 tms_len
= vsllink_tms_data_len
+ num_states
;
755 // merge into last tms shift
758 // just append tms data to the last tms byte
759 vsllink_add_path(vsllink_tms_data_len
, num_states
, path
);
761 else if (tms_len
== 8)
763 // end last tms shift command
764 (*vsllink_tms_cmd_pos
)--;
765 vsllink_add_path(vsllink_tms_data_len
, num_states
, path
);
767 else if (tms_len
< 16)
769 if ((*vsllink_tms_cmd_pos
& VSLLINK_CMDJTAGSEQ_LENMSK
) < VSLLINK_CMDJTAGSEQ_LENMSK
)
771 // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most
772 // there is enought tms length in the current tms shift command
773 (*vsllink_tms_cmd_pos
)++;
774 vsllink_add_path(vsllink_tms_data_len
, num_states
, path
);
778 // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most
779 // not enough tms length in the current tms shift command
780 // so a new command should be added
781 // first decrease byte length of last tms shift command
782 (*vsllink_tms_cmd_pos
)--;
783 // append tms data to the last tms byte
784 vsllink_add_path(vsllink_tms_data_len
, 8 - vsllink_tms_data_len
, path
);
785 path
+= 8 - vsllink_tms_data_len
;
786 // add new command(3 bytes)
787 vsllink_tap_ensure_space(0, 3);
788 vsllink_tms_cmd_pos
= &vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
];
789 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_TMSBYTE
| 1;
790 vsllink_add_path(0, num_states
- (8 - vsllink_tms_data_len
), path
);
793 else if (tms_len
== 16)
795 // end last tms shift command
796 vsllink_add_path(vsllink_tms_data_len
, num_states
, path
);
799 vsllink_tms_data_len
= (vsllink_tms_data_len
+ num_states
) & 7;
800 if (vsllink_tms_data_len
== 0)
802 vsllink_tms_cmd_pos
= NULL
;
808 vsllink_add_path(vsllink_tms_data_len
, 16 - vsllink_tms_data_len
, path
);
810 path
+= 16 - vsllink_tms_data_len
;
811 num_states
-= 16 - vsllink_tms_data_len
;
812 vsllink_tms_data_len
= 0;
813 vsllink_tms_cmd_pos
= NULL
;
819 // Normal operation, don't need to append tms data
820 vsllink_tms_data_len
= num_states
& 7;
822 while (num_states
> 0)
824 if (num_states
> ((VSLLINK_CMDJTAGSEQ_LENMSK
+ 1) * 8))
826 i
= (VSLLINK_CMDJTAGSEQ_LENMSK
+ 1) * 8;
832 tms_len
= (i
+ 7) >> 3;
833 vsllink_tap_ensure_space(0, tms_len
+ 2);
834 tms_cmd_pos
= vsllink_usb_out_buffer_idx
;
835 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_TMSBYTE
| (tms_len
- 1);
837 vsllink_add_path(0, i
, path
+ path_idx
);
843 if (vsllink_tms_data_len
> 0)
845 if (tms_len
< (VSLLINK_CMDJTAGSEQ_LENMSK
+ 1))
847 vsllink_tms_cmd_pos
= &vsllink_usb_out_buffer
[tms_cmd_pos
];
848 (*vsllink_tms_cmd_pos
)++;
852 vsllink_usb_out_buffer
[tms_cmd_pos
]--;
854 tms_len
= vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
];
855 vsllink_tap_ensure_space(0, 3);
856 vsllink_tms_cmd_pos
= &vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
];
857 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_TMSBYTE
| 1;
858 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] = tms_len
;
863 static void vsllink_path_move_dma(int num_states
, tap_state_t
*path
)
869 if ((8 - (tap_length
& 7)) < num_states
)
871 j
= 8 - (tap_length
& 7);
877 for (i
= 0; i
< j
; i
++)
879 if (path
[i
] == tap_state_transition(tap_get_state(), false))
881 vsllink_tap_append_step(0, 0);
883 else if (path
[i
] == tap_state_transition(tap_get_state(), true))
885 vsllink_tap_append_step(1, 0);
889 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(tap_get_state()), tap_state_name(path
[i
]));
892 tap_set_state(path
[i
]);
899 vsllink_tap_ensure_space(0, num_states
);
901 for (i
= 0; i
< num_states
; i
++)
903 if (path
[j
+ i
] == tap_state_transition(tap_get_state(), false))
905 vsllink_tap_append_step(0, 0);
907 else if (path
[j
+ i
] == tap_state_transition(tap_get_state(), true))
909 vsllink_tap_append_step(1, 0);
913 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(tap_get_state()), tap_state_name(path
[i
]));
916 tap_set_state(path
[j
+ i
]);
920 tap_set_end_state(tap_get_state());
923 static void vsllink_stableclocks_normal(int num_cycles
, int tms
)
926 uint16_t tms_append_byte
;
928 if (vsllink_tms_data_len
> 0)
930 // there are vsllink_tms_data_len more tms bits to be shifted
931 // so there are vsllink_tms_data_len + num_cycles tms bits in all
932 tms_len
= vsllink_tms_data_len
+ num_cycles
;
935 // append '1' for tms
936 tms_append_byte
= (uint16_t)((((1 << num_cycles
) - 1) << vsllink_tms_data_len
) & 0xFFFF);
940 // append '0' for tms
945 // merge into last tms shift
948 // just add to vsllink_tms_data_len
949 // same result if tun through
950 //vsllink_tms_data_len += num_cycles;
951 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] |= (uint8_t)(tms_append_byte
& 0xFF);
953 else if (tms_len
== 8)
955 // end last tms shift command
956 // just reduce it, and append last tms byte
957 (*vsllink_tms_cmd_pos
)--;
958 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] |= (uint8_t)(tms_append_byte
& 0xFF);
960 else if (tms_len
< 16)
962 if ((*vsllink_tms_cmd_pos
& VSLLINK_CMDJTAGSEQ_LENMSK
) < VSLLINK_CMDJTAGSEQ_LENMSK
)
964 // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most
965 // there is enought tms length in the current tms shift command
966 // increase the tms byte length by 1 and set the last byte to 0
967 (*vsllink_tms_cmd_pos
)++;
968 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] |= (uint8_t)(tms_append_byte
& 0xFF);
969 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] = (uint8_t)(tms_append_byte
>> 8);
973 // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most
974 // not enough tms length in the current tms shift command
975 // so a new command should be added
976 // first decrease byte length of last tms shift command
977 (*vsllink_tms_cmd_pos
)--;
978 // append last tms byte and move the command pointer to the next empty position
979 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] |= (uint8_t)(tms_append_byte
& 0xFF);
980 // add new command(3 bytes)
981 vsllink_tap_ensure_space(0, 3);
982 vsllink_tms_cmd_pos
= &vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
];
983 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_TMSBYTE
| 1;
984 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] = (uint8_t)(tms_append_byte
>> 8);
987 else if (tms_len
== 16)
989 // end last tms shift command
990 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] |= (uint8_t)(tms_append_byte
& 0xFF);
991 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = (uint8_t)(tms_append_byte
>> 8);
994 vsllink_tms_data_len
= tms_len
& 7;
995 if (vsllink_tms_data_len
== 0)
997 vsllink_tms_cmd_pos
= NULL
;
1003 // more shifts will be needed
1004 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] |= (uint8_t)(tms_append_byte
& 0xFF);
1005 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = (uint8_t)(tms_append_byte
>> 8);
1007 num_cycles
-= 16 - vsllink_tms_data_len
;
1008 vsllink_tms_data_len
= 0;
1009 vsllink_tms_cmd_pos
= NULL
;
1012 // from here vsllink_tms_data_len == 0 or num_cycles == 0
1014 if (vsllink_tms_data_len
> 0)
1020 LOG_ERROR("There MUST be some bugs in the driver");
1026 // get number of bytes left to be sent
1027 tms_len
= num_cycles
>> 3;
1030 vsllink_tap_ensure_space(1, 5);
1031 // if tms_len > 0, vsllink_tms_data_len == 0
1032 // so just add new command
1033 // LSB of the command byte is the tms value when do the shifting
1036 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_TMSCLOCK
| 1;
1040 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_TMSCLOCK
;
1042 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = (tms_len
>> 0) & 0xff;
1043 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = (tms_len
>> 8) & 0xff;
1044 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = (tms_len
>> 16) & 0xff;
1045 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = (tms_len
>> 24) & 0xff;
1047 vsllink_usb_in_want_length
+= 1;
1048 pending_scan_results_buffer
[pending_scan_results_length
].buffer
= NULL
;
1049 pending_scan_results_length
++;
1051 if (tms_len
> 0xFFFF)
1053 vsllink_tap_execute();
1058 vsllink_tms_data_len
= num_cycles
& 7;
1059 if (vsllink_tms_data_len
> 0)
1061 vsllink_tap_ensure_space(0, 3);
1062 vsllink_tms_cmd_pos
= &vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
];
1063 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_TMSBYTE
| 1;
1066 // append '1' for tms
1067 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] = (1 << vsllink_tms_data_len
) - 1;
1071 // append '0' for tms
1072 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] = 0x00;
1077 static void vsllink_stableclocks_dma(int num_cycles
, int tms
)
1083 if ((8 - (tap_length
& 7)) < num_cycles
)
1085 cur_cycles
= 8 - (tap_length
& 7);
1089 cur_cycles
= num_cycles
;
1091 for (i
= 0; i
< cur_cycles
; i
++)
1093 vsllink_tap_append_step(tms
, 0);
1095 num_cycles
-= cur_cycles
;
1098 while (num_cycles
> 0)
1100 if (num_cycles
> 8 * tap_buffer_size
)
1102 cur_cycles
= 8 * tap_buffer_size
;
1106 cur_cycles
= num_cycles
;
1109 vsllink_tap_ensure_space(0, cur_cycles
);
1111 for (i
= 0; i
< cur_cycles
; i
++)
1113 vsllink_tap_append_step(tms
, 0);
1116 num_cycles
-= cur_cycles
;
1120 static void vsllink_runtest(int num_cycles
)
1122 tap_state_t saved_end_state
= tap_get_end_state();
1124 if (tap_get_state() != TAP_IDLE
)
1126 // enter into IDLE state
1127 vsllink_end_state(TAP_IDLE
);
1128 vsllink_state_move();
1131 vsllink_stableclocks(num_cycles
, 0);
1135 vsllink_end_state(saved_end_state
);
1136 tap_set_state(TAP_IDLE
);
1137 if (tap_get_end_state() != TAP_IDLE
)
1139 vsllink_state_move();
1143 static void vsllink_scan_normal(bool ir_scan
, enum scan_type type
, uint8_t *buffer
, int scan_size
, scan_command_t
*command
)
1145 tap_state_t saved_end_state
;
1146 uint8_t bits_left
, tms_tmp
, tdi_len
;
1154 tdi_len
= ((scan_size
+ 7) >> 3);
1155 if ((tdi_len
+ 7) > VSLLINK_BufferSize
)
1157 LOG_ERROR("Your implementation of VSLLink has not enough buffer");
1161 saved_end_state
= tap_get_end_state();
1163 /* Move to appropriate scan state */
1164 vsllink_end_state(ir_scan
? TAP_IRSHIFT
: TAP_DRSHIFT
);
1166 if (vsllink_tms_data_len
> 0)
1168 if (tap_get_state() == tap_get_end_state())
1170 // already in IRSHIFT or DRSHIFT state
1171 // merge tms data in the last tms shift command into next scan command
1172 if (*vsllink_tms_cmd_pos
< 1)
1174 LOG_ERROR("There MUST be some bugs in the driver");
1177 else if (*vsllink_tms_cmd_pos
< 2)
1179 tms_tmp
= vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
];
1180 vsllink_usb_out_buffer_idx
--;
1184 tms_tmp
= vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
];
1185 *vsllink_tms_cmd_pos
-= 2;
1188 vsllink_tap_ensure_space(1, tdi_len
+ 7);
1189 // VSLLINK_CMDJTAGSEQ_SCAN ored by 1 means that tms_before is valid
1190 // which is merged from the last tms shift command
1191 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_SCAN
| 1;
1192 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = ((tdi_len
+ 1) >> 0) & 0xff;
1193 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = ((tdi_len
+ 1) >> 8) & 0xff;
1194 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = tms_tmp
;
1195 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = buffer
[0] << (8 - vsllink_tms_data_len
);
1197 for (i
= 0; i
< tdi_len
; i
++)
1199 buffer
[i
] >>= 8 - vsllink_tms_data_len
;
1202 buffer
[i
] += buffer
[i
+ 1] << vsllink_tms_data_len
;
1206 vsllink_tap_append_scan_normal(scan_size
- vsllink_tms_data_len
, buffer
, command
, vsllink_tms_data_len
);
1207 scan_size
-= 8 - vsllink_tms_data_len
;
1208 vsllink_tms_data_len
= 0;
1212 vsllink_state_move();
1213 vsllink_tap_ensure_space(1, tdi_len
+ 5);
1215 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_SCAN
;
1216 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = (tdi_len
>> 0) & 0xff;
1217 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = (tdi_len
>> 8) & 0xff;
1219 vsllink_tap_append_scan_normal(scan_size
, buffer
, command
, 0);
1224 vsllink_tap_ensure_space(1, tdi_len
+ 7);
1226 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_CMDJTAGSEQ_SCAN
| 1;
1227 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = ((tdi_len
+ 1) >> 0) & 0xff;
1228 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = ((tdi_len
+ 1)>> 8) & 0xff;
1229 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_TAP_MOVE(tap_get_state(), tap_get_end_state());
1230 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = 0;
1232 vsllink_tap_append_scan_normal(scan_size
, buffer
, command
, 8);
1234 vsllink_end_state(saved_end_state
);
1236 bits_left
= scan_size
& 0x07;
1237 tap_set_state(ir_scan
? TAP_IRPAUSE
: TAP_DRPAUSE
);
1241 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = 1 << (bits_left
- 1);
1245 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = 1 << 7;
1248 if (tap_get_state() != tap_get_end_state())
1250 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = VSLLINK_TAP_MOVE(tap_get_state(), tap_get_end_state());
1254 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = 0;
1257 tap_set_state(tap_get_end_state());
1259 static void vsllink_scan_dma(bool ir_scan
, enum scan_type type
, uint8_t *buffer
, int scan_size
, scan_command_t
*command
)
1261 tap_state_t saved_end_state
;
1263 saved_end_state
= tap_get_end_state();
1265 /* Move to appropriate scan state */
1266 vsllink_end_state(ir_scan
? TAP_IRSHIFT
: TAP_DRSHIFT
);
1268 vsllink_state_move();
1269 vsllink_end_state(saved_end_state
);
1272 vsllink_tap_append_scan_dma(scan_size
, buffer
, command
);
1274 tap_set_state(ir_scan
? TAP_IRPAUSE
: TAP_DRPAUSE
);
1275 while (tap_length
% 8 != 0)
1278 vsllink_tap_append_step(0, 0);
1281 if (tap_get_state() != tap_get_end_state())
1283 vsllink_state_move();
1287 static void vsllink_reset(int trst
, int srst
)
1291 LOG_DEBUG("trst: %i, srst: %i", trst
, srst
);
1293 /* Signals are active low */
1294 vsllink_usb_out_buffer
[0] = VSLLINK_CMD_SET_PORT
;
1295 vsllink_usb_out_buffer
[1] = JTAG_PINMSK_SRST
| JTAG_PINMSK_TRST
;
1296 vsllink_usb_out_buffer
[2] = 0;
1299 vsllink_usb_out_buffer
[2] |= JTAG_PINMSK_SRST
;
1303 vsllink_usb_out_buffer
[2] |= JTAG_PINMSK_TRST
;
1306 result
= vsllink_usb_write(vsllink_jtag_handle
, 3);
1309 LOG_ERROR("VSLLink command VSLLINK_CMD_SET_PORT failed (%d)", result
);
1313 static void vsllink_simple_command(uint8_t command
)
1317 DEBUG_JTAG_IO("0x%02x", command
);
1319 vsllink_usb_out_buffer
[0] = command
;
1320 result
= vsllink_usb_write(vsllink_jtag_handle
, 1);
1324 LOG_ERROR("VSLLink command 0x%02x failed (%d)", command
, result
);
1328 static int vsllink_handle_mode_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1331 LOG_ERROR("parameter error, should be one parameter for VID");
1335 if (!strcmp(args
[0], "normal"))
1337 vsllink_mode
= VSLLINK_MODE_NORMAL
;
1339 else if (!strcmp(args
[0], "dma"))
1341 vsllink_mode
= VSLLINK_MODE_DMA
;
1345 LOG_ERROR("invalid vsllink_mode: %s", args
[0]);
1352 static int vsllink_handle_usb_vid_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1356 LOG_ERROR("parameter error, should be one parameter for VID");
1360 COMMAND_PARSE_NUMBER(u16
, args
[0], vsllink_usb_vid
);
1364 static int vsllink_handle_usb_pid_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1368 LOG_ERROR("parameter error, should be one parameter for PID");
1371 COMMAND_PARSE_NUMBER(u16
, args
[0], vsllink_usb_pid
);
1375 static int vsllink_handle_usb_bulkin_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1379 LOG_ERROR("parameter error, should be one parameter for BULKIN endpoint");
1383 COMMAND_PARSE_NUMBER(u8
, args
[0], vsllink_usb_bulkin
);
1385 vsllink_usb_bulkin
|= 0x80;
1390 static int vsllink_handle_usb_bulkout_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1394 LOG_ERROR("parameter error, should be one parameter for BULKOUT endpoint");
1398 COMMAND_PARSE_NUMBER(u8
, args
[0], vsllink_usb_bulkout
);
1400 vsllink_usb_bulkout
&= ~0x80;
1405 static int vsllink_handle_usb_interface_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1409 LOG_ERROR("parameter error, should be one parameter for interface number");
1413 COMMAND_PARSE_NUMBER(u8
, args
[0], vsllink_usb_interface
);
1417 /***************************************************************************/
1418 /* VSLLink tap functions */
1420 static void vsllink_tap_init_normal(void)
1422 vsllink_usb_out_buffer_idx
= 0;
1423 vsllink_usb_in_want_length
= 0;
1424 pending_scan_results_length
= 0;
1426 static void vsllink_tap_init_dma(void)
1429 pending_scan_results_length
= 0;
1432 static void vsllink_tap_ensure_space_normal(int scans
, int length
)
1434 int available_scans
= MAX_PENDING_SCAN_RESULTS
- pending_scan_results_length
;
1435 int available_bytes
= VSLLINK_BufferSize
- vsllink_usb_out_buffer_idx
;
1437 if (scans
> available_scans
|| length
> available_bytes
)
1439 vsllink_tap_execute();
1442 static void vsllink_tap_ensure_space_dma(int scans
, int length
)
1444 int available_scans
= MAX_PENDING_SCAN_RESULTS
- pending_scan_results_length
;
1445 int available_bytes
= tap_buffer_size
* 8 - tap_length
;
1447 if (scans
> available_scans
|| length
> available_bytes
)
1449 vsllink_tap_execute();
1453 static void vsllink_tap_append_step(int tms
, int tdi
)
1456 int index
= tap_length
/ 8;
1458 if (index
< tap_buffer_size
)
1460 int bit_index
= tap_length
% 8;
1461 uint8_t bit
= 1 << bit_index
;
1465 tms_buffer
[index
] |= bit
;
1469 tms_buffer
[index
] &= ~bit
;
1474 tdi_buffer
[index
] |= bit
;
1478 tdi_buffer
[index
] &= ~bit
;
1485 LOG_ERROR("buffer overflow, tap_length=%d", tap_length
);
1489 static void vsllink_tap_append_scan_normal(int length
, uint8_t *buffer
, scan_command_t
*command
, int offset
)
1491 pending_scan_result_t
*pending_scan_result
= &pending_scan_results_buffer
[pending_scan_results_length
];
1496 vsllink_usb_in_want_length
+= ((length
+ 7) >> 3) + 1;
1500 vsllink_usb_in_want_length
+= (length
+ 7) >> 3;
1502 pending_scan_result
->length
= length
;
1503 pending_scan_result
->offset
= offset
;
1504 pending_scan_result
->command
= command
;
1505 pending_scan_result
->buffer
= buffer
;
1507 for (i
= 0; i
< ((length
+ 7) >> 3); i
++)
1509 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = buffer
[i
];
1512 pending_scan_results_length
++;
1514 static void vsllink_tap_append_scan_dma(int length
, uint8_t *buffer
, scan_command_t
*command
)
1516 pending_scan_result_t
*pending_scan_result
;
1517 int len_tmp
, len_all
, i
;
1520 while (len_all
< length
)
1522 if ((length
- len_all
) > tap_buffer_size
* 8)
1524 len_tmp
= tap_buffer_size
* 8;
1528 len_tmp
= length
- len_all
;
1531 vsllink_tap_ensure_space(1, (len_tmp
+ 7) & ~7);
1533 pending_scan_result
= &pending_scan_results_buffer
[pending_scan_results_length
];
1534 pending_scan_result
->offset
= tap_length
;
1535 pending_scan_result
->length
= len_tmp
;
1536 pending_scan_result
->command
= command
;
1537 pending_scan_result
->buffer
= buffer
+ len_all
/ 8;
1539 for (i
= 0; i
< len_tmp
; i
++)
1541 vsllink_tap_append_step(((len_all
+ i
) < length
-1 ? 0 : 1), (buffer
[(len_all
+ i
)/8] >> ((len_all
+ i
)%8)) & 1);
1544 pending_scan_results_length
++;
1549 /* Pad and send a tap sequence to the device, and receive the answer.
1550 * For the purpose of padding we assume that we are in reset or idle or pause state. */
1551 static int vsllink_tap_execute_normal(void)
1557 if (vsllink_tms_data_len
> 0)
1559 if ((tap_get_state() != TAP_RESET
) && (tap_get_state() != TAP_IDLE
) && (tap_get_state() != TAP_IRPAUSE
) && (tap_get_state() != TAP_DRPAUSE
))
1561 LOG_WARNING("%s is not in RESET or IDLE or PAUSR state", tap_state_name(tap_get_state()));
1564 if (vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
] & (1 << (vsllink_tms_data_len
- 1)))
1566 // last tms bit is '1'
1567 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] |= 0xFF << vsllink_tms_data_len
;
1568 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = 0xFF;
1569 vsllink_tms_data_len
= 0;
1573 // last tms bit is '0'
1574 vsllink_usb_out_buffer_idx
++;
1575 vsllink_usb_out_buffer
[vsllink_usb_out_buffer_idx
++] = 0;
1576 vsllink_tms_data_len
= 0;
1580 if (vsllink_usb_out_buffer_idx
> 3)
1582 if (vsllink_usb_out_buffer
[0] == VSLLINK_CMD_HW_JTAGSEQCMD
)
1584 vsllink_usb_out_buffer
[1] = (vsllink_usb_out_buffer_idx
>> 0) & 0xff;
1585 vsllink_usb_out_buffer
[2] = (vsllink_usb_out_buffer_idx
>> 8) & 0xff;
1588 result
= vsllink_usb_message(vsllink_jtag_handle
, vsllink_usb_out_buffer_idx
, vsllink_usb_in_want_length
);
1590 if (result
== vsllink_usb_in_want_length
)
1592 for (i
= 0; i
< pending_scan_results_length
; i
++)
1594 pending_scan_result_t
*pending_scan_result
= &pending_scan_results_buffer
[i
];
1595 uint8_t *buffer
= pending_scan_result
->buffer
;
1596 int length
= pending_scan_result
->length
;
1597 int offset
= pending_scan_result
->offset
;
1598 scan_command_t
*command
= pending_scan_result
->command
;
1602 // IRSHIFT or DRSHIFT
1603 buf_set_buf(vsllink_usb_in_buffer
, first
* 8 + offset
, buffer
, 0, length
);
1604 first
+= (length
+ offset
+ 7) >> 3;
1606 DEBUG_JTAG_IO("JTAG scan read(%d bits):", length
);
1607 #ifdef _DEBUG_JTAG_IO_
1608 vsllink_debug_buffer(buffer
, (length
+ 7) >> 3);
1611 if (jtag_read_buffer(buffer
, command
) != ERROR_OK
)
1614 return ERROR_JTAG_QUEUE_FAILED
;
1617 free(pending_scan_result
->buffer
);
1618 pending_scan_result
->buffer
= NULL
;
1628 LOG_ERROR("vsllink_tap_execute, wrong result %d, expected %d", result
, vsllink_usb_in_want_length
);
1629 return ERROR_JTAG_QUEUE_FAILED
;
1634 reset_command_pointer();
1638 static int vsllink_tap_execute_dma(void)
1646 /* Pad last byte so that tap_length is divisible by 8 */
1647 while (tap_length
% 8 != 0)
1649 /* More of the last TMS value keeps us in the same state,
1650 * analogous to free-running JTAG interfaces. */
1651 vsllink_tap_append_step(last_tms
, 0);
1653 byte_length
= tap_length
/ 8;
1655 vsllink_usb_out_buffer
[0] = VSLLINK_CMD_HW_JTAGRAWCMD
;
1656 vsllink_usb_out_buffer
[1] = ((byte_length
* 2 + 3) >> 0) & 0xff; // package size
1657 vsllink_usb_out_buffer
[2] = ((byte_length
* 2 + 3) >> 8) & 0xff;
1659 memcpy(&vsllink_usb_out_buffer
[3], tdi_buffer
, byte_length
);
1660 memcpy(&vsllink_usb_out_buffer
[3 + byte_length
], tms_buffer
, byte_length
);
1662 result
= vsllink_usb_message(vsllink_jtag_handle
, 3 + 2 * byte_length
, byte_length
);
1663 if (result
== byte_length
)
1665 for (i
= 0; i
< pending_scan_results_length
; i
++)
1667 pending_scan_result_t
*pending_scan_result
= &pending_scan_results_buffer
[i
];
1668 uint8_t *buffer
= pending_scan_result
->buffer
;
1669 int length
= pending_scan_result
->length
;
1670 int first
= pending_scan_result
->offset
;
1672 scan_command_t
*command
= pending_scan_result
->command
;
1673 buf_set_buf(vsllink_usb_in_buffer
, first
, buffer
, 0, length
);
1675 DEBUG_JTAG_IO("JTAG scan read(%d bits, from %d bits):", length
, first
);
1676 #ifdef _DEBUG_JTAG_IO_
1677 vsllink_debug_buffer(buffer
, (length
+ 7) >> 3);
1680 if (jtag_read_buffer(buffer
, command
) != ERROR_OK
)
1683 return ERROR_JTAG_QUEUE_FAILED
;
1686 if (pending_scan_result
->buffer
!= NULL
)
1688 free(pending_scan_result
->buffer
);
1694 LOG_ERROR("vsllink_tap_execute, wrong result %d, expected %d", result
, byte_length
);
1695 return ERROR_JTAG_QUEUE_FAILED
;
1704 /*****************************************************************************/
1705 /* VSLLink USB low-level functions */
1707 static vsllink_jtag_t
* vsllink_usb_open(void)
1709 struct usb_bus
*busses
;
1710 struct usb_bus
*bus
;
1711 struct usb_device
*dev
;
1714 vsllink_jtag_t
*result
;
1716 result
= (vsllink_jtag_t
*) malloc(sizeof(vsllink_jtag_t
));
1722 busses
= usb_get_busses();
1724 /* find vsllink_jtag device in usb bus */
1726 for (bus
= busses
; bus
; bus
= bus
->next
)
1728 for (dev
= bus
->devices
; dev
; dev
= dev
->next
)
1730 if ((dev
->descriptor
.idVendor
== vsllink_usb_vid
) && (dev
->descriptor
.idProduct
== vsllink_usb_pid
))
1732 result
->usb_handle
= usb_open(dev
);
1733 if (NULL
== result
->usb_handle
)
1735 LOG_ERROR("failed to open %04X:%04X, not enough permissions?", vsllink_usb_vid
, vsllink_usb_pid
);
1739 /* usb_set_configuration required under win32 */
1740 ret
= usb_set_configuration(result
->usb_handle
, dev
->config
[0].bConfigurationValue
);
1743 LOG_ERROR("fail to set configuration to %d, %d returned, not enough permissions?", dev
->config
[0].bConfigurationValue
, ret
);
1746 ret
= usb_claim_interface(result
->usb_handle
, vsllink_usb_interface
);
1749 LOG_ERROR("fail to claim interface %d, %d returned", vsllink_usb_interface
, ret
);
1755 * This makes problems under Mac OS X. And is not needed
1756 * under Windows. Hopefully this will not break a linux build
1758 usb_set_altinterface(result
->usb_handle
, 0);
1769 static void vsllink_usb_close(vsllink_jtag_t
*vsllink_jtag
)
1773 ret
= usb_release_interface(vsllink_jtag
->usb_handle
, vsllink_usb_interface
);
1776 LOG_ERROR("fail to release interface %d, %d returned", vsllink_usb_interface
, ret
);
1780 ret
= usb_close(vsllink_jtag
->usb_handle
);
1783 LOG_ERROR("fail to close usb, %d returned", ret
);
1790 /* Send a message and receive the reply. */
1791 static int vsllink_usb_message(vsllink_jtag_t
*vsllink_jtag
, int out_length
, int in_length
)
1795 result
= vsllink_usb_write(vsllink_jtag
, out_length
);
1796 if (result
== out_length
)
1800 result
= vsllink_usb_read(vsllink_jtag
);
1801 if (result
== in_length
)
1807 LOG_ERROR("usb_bulk_read failed (requested=%d, result=%d)", in_length
, result
);
1815 LOG_ERROR("usb_bulk_write failed (requested=%d, result=%d)", out_length
, result
);
1820 /* Write data from out_buffer to USB. */
1821 static int vsllink_usb_write(vsllink_jtag_t
*vsllink_jtag
, int out_length
)
1825 if (out_length
> VSLLINK_BufferSize
)
1827 LOG_ERROR("vsllink_jtag_write illegal out_length=%d (max=%d)", out_length
, VSLLINK_BufferSize
);
1831 result
= usb_bulk_write(vsllink_jtag
->usb_handle
, vsllink_usb_bulkout
, \
1832 (char *)vsllink_usb_out_buffer
, out_length
, VSLLINK_USB_TIMEOUT
);
1834 DEBUG_JTAG_IO("vsllink_usb_write, out_length = %d, result = %d", out_length
, result
);
1836 #ifdef _DEBUG_USB_COMMS_
1837 LOG_DEBUG("USB out:");
1838 vsllink_debug_buffer(vsllink_usb_out_buffer
, out_length
);
1841 #ifdef _VSLLINK_IN_DEBUG_MODE_
1848 /* Read data from USB into in_buffer. */
1849 static int vsllink_usb_read(vsllink_jtag_t
*vsllink_jtag
)
1851 int result
= usb_bulk_read(vsllink_jtag
->usb_handle
, vsllink_usb_bulkin
, \
1852 (char *)vsllink_usb_in_buffer
, VSLLINK_BufferSize
, VSLLINK_USB_TIMEOUT
);
1854 DEBUG_JTAG_IO("vsllink_usb_read, result = %d", result
);
1856 #ifdef _DEBUG_USB_COMMS_
1857 LOG_DEBUG("USB in:");
1858 vsllink_debug_buffer(vsllink_usb_in_buffer
, result
);
1863 #define BYTES_PER_LINE 16
1865 #if defined _DEBUG_USB_COMMS_ || defined _DEBUG_JTAG_IO_
1866 static void vsllink_debug_buffer(uint8_t *buffer
, int length
)
1873 for (i
= 0; i
< length
; i
+= BYTES_PER_LINE
)
1875 snprintf(line
, 5, "%04x", i
);
1876 for (j
= i
; j
< i
+ BYTES_PER_LINE
&& j
< length
; j
++)
1878 snprintf(s
, 4, " %02x", buffer
[j
]);
1881 LOG_DEBUG("%s", line
);
1884 #endif // _DEBUG_USB_COMMS_ || _DEBUG_JTAG_IO_
1886 static int vsllink_register_commands(struct command_context_s
*cmd_ctx
)
1888 register_command(cmd_ctx
, NULL
, "vsllink_usb_vid",
1889 vsllink_handle_usb_vid_command
, COMMAND_CONFIG
,
1891 register_command(cmd_ctx
, NULL
, "vsllink_usb_pid",
1892 vsllink_handle_usb_pid_command
, COMMAND_CONFIG
,
1894 register_command(cmd_ctx
, NULL
, "vsllink_usb_bulkin",
1895 vsllink_handle_usb_bulkin_command
, COMMAND_CONFIG
,
1897 register_command(cmd_ctx
, NULL
, "vsllink_usb_bulkout",
1898 vsllink_handle_usb_bulkout_command
, COMMAND_CONFIG
,
1900 register_command(cmd_ctx
, NULL
, "vsllink_usb_interface",
1901 vsllink_handle_usb_interface_command
, COMMAND_CONFIG
,
1903 register_command(cmd_ctx
, NULL
, "vsllink_mode",
1904 vsllink_handle_mode_command
, COMMAND_CONFIG
,
1910 jtag_interface_t vsllink_interface
= {
1912 .register_commands
= &vsllink_register_commands
,
1913 .init
= &vsllink_init
,
1914 .quit
= &vsllink_quit
,
1915 .khz
= &vsllink_khz
,
1916 .speed
= &vsllink_speed
,
1917 .speed_div
= &vsllink_speed_div
,
1918 .execute_queue
= &vsllink_execute_queue
,