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 <jtag/interface.h>
30 #include <jtag/commands.h>
31 #include "usb_common.h"
33 //#define _VSLLINK_IN_DEBUG_MODE_
35 #define VSLLINK_MODE_NORMAL 0
36 #define VSLLINK_MODE_DMA 1
38 static uint16_t vsllink_usb_vid;
39 static uint16_t vsllink_usb_pid;
40 static uint8_t vsllink_usb_bulkout;
41 static uint8_t vsllink_usb_bulkin;
42 static uint8_t vsllink_usb_interface;
43 static uint8_t vsllink_mode = VSLLINK_MODE_NORMAL;
44 static int VSLLINK_USB_TIMEOUT = 10000;
46 static int VSLLINK_BufferSize = 1024;
48 /* Global USB buffers */
49 static int vsllink_usb_out_buffer_idx;
50 static int vsllink_usb_in_want_length;
51 static uint8_t* vsllink_usb_in_buffer = NULL;
52 static uint8_t* vsllink_usb_out_buffer = NULL;
54 /* Constants for VSLLink command */
55 #define VSLLINK_CMD_CONN 0x80
56 #define VSLLINK_CMD_DISCONN 0x81
57 #define VSLLINK_CMD_SET_SPEED 0x82
58 #define VSLLINK_CMD_SET_PORT 0x90
59 #define VSLLINK_CMD_GET_PORT 0x91
60 #define VSLLINK_CMD_SET_PORTDIR 0x92
61 #define VSLLINK_CMD_HW_JTAGSEQCMD 0xA0
62 #define VSLLINK_CMD_HW_JTAGHLCMD 0xA1
63 #define VSLLINK_CMD_HW_SWDCMD 0xA2
64 #define VSLLINK_CMD_HW_JTAGRAWCMD 0xA3
66 #define VSLLINK_CMDJTAGSEQ_TMSBYTE 0x00
67 #define VSLLINK_CMDJTAGSEQ_TMSCLOCK 0x40
68 #define VSLLINK_CMDJTAGSEQ_SCAN 0x80
70 #define VSLLINK_CMDJTAGSEQ_CMDMSK 0xC0
71 #define VSLLINK_CMDJTAGSEQ_LENMSK 0x3F
73 #define JTAG_PINMSK_SRST (1 << 0)
74 #define JTAG_PINMSK_TRST (1 << 1)
75 #define JTAG_PINMSK_USR1 (1 << 2)
76 #define JTAG_PINMSK_USR2 (1 << 3)
77 #define JTAG_PINMSK_TCK (1 << 4)
78 #define JTAG_PINMSK_TMS (1 << 5)
79 #define JTAG_PINMSK_TDI (1 << 6)
80 #define JTAG_PINMSK_TDO (1 << 7)
83 #define VSLLINK_TAP_MOVE(from, to) VSLLINK_tap_move[tap_move_ndx(from)][tap_move_ndx(to)]
85 /* VSLLINK_tap_move[i][j]: tap movement command to go from state i to state j
93 * SD->SD and SI->SI have to be caught in interface specific code
95 static uint8_t VSLLINK_tap_move[6][6] =
97 /* TLR RTI SD PD SI PI */
98 {0xff, 0x7f, 0x2f, 0x0a, 0x37, 0x16}, /* TLR */
99 {0xff, 0x00, 0x45, 0x05, 0x4b, 0x0b}, /* RTI */
100 {0xff, 0x61, 0x00, 0x01, 0x0f, 0x2f}, /* SD */
101 {0xfe, 0x60, 0x40, 0x5c, 0x3c, 0x5e}, /* PD */
102 {0xff, 0x61, 0x07, 0x17, 0x00, 0x01}, /* SI */
103 {0xfe, 0x60, 0x38, 0x5c, 0x40, 0x5e} /* PI */
106 struct insert_insignificant_operation {
107 unsigned char insert_value;
108 unsigned char insert_position;
111 static struct insert_insignificant_operation VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[6][6] =
158 static uint8_t VSLLINK_BIT_MSK[8] =
160 0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f
163 struct pending_scan_result {
165 int length; /* Number of bits to read */
166 struct scan_command *command; /* Corresponding scan command */
170 #define MAX_PENDING_SCAN_RESULTS 256
172 static int pending_scan_results_length;
173 static struct pending_scan_result pending_scan_results_buffer[MAX_PENDING_SCAN_RESULTS];
175 /* Queue command functions */
176 static void vsllink_end_state(tap_state_t state);
177 static void vsllink_state_move_dma(void);
178 static void vsllink_state_move_normal(void);
179 static void (*vsllink_state_move)(void);
180 static void vsllink_path_move_dma(int num_states, tap_state_t *path);
181 static void vsllink_path_move_normal(int num_states, tap_state_t *path);
182 static void (*vsllink_path_move)(int num_states, tap_state_t *path);
183 static void vsllink_runtest(int num_cycles);
184 static void vsllink_stableclocks_dma(int num_cycles, int tms);
185 static void vsllink_stableclocks_normal(int num_cycles, int tms);
186 static void (*vsllink_stableclocks)(int num_cycles, int tms);
187 static void vsllink_scan_dma(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size, struct scan_command *command);
188 static void vsllink_scan_normal(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size, struct scan_command *command);
189 static void (*vsllink_scan)(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size, struct scan_command *command);
190 static void vsllink_reset(int trst, int srst);
191 static void vsllink_simple_command(uint8_t command);
192 static int vsllink_connect(void);
193 static int vsllink_disconnect(void);
195 /* VSLLink tap buffer functions */
196 static void vsllink_tap_append_step(int tms, int tdi);
197 static void vsllink_tap_init_dma(void);
198 static void vsllink_tap_init_normal(void);
199 static void (*vsllink_tap_init)(void);
200 static int vsllink_tap_execute_dma(void);
201 static int vsllink_tap_execute_normal(void);
202 static int (*vsllink_tap_execute)(void);
203 static void vsllink_tap_ensure_space_dma(int scans, int length);
204 static void vsllink_tap_ensure_space_normal(int scans, int length);
205 static void (*vsllink_tap_ensure_space)(int scans, int length);
206 static void vsllink_tap_append_scan_dma(int length, uint8_t *buffer, struct scan_command *command);
207 static void vsllink_tap_append_scan_normal(int length, uint8_t *buffer, struct scan_command *command, int offset);
209 /* VSLLink lowlevel functions */
211 struct usb_dev_handle* usb_handle;
214 static struct vsllink *vsllink_usb_open(void);
215 static void vsllink_usb_close(struct vsllink *vsllink);
216 static int vsllink_usb_message(struct vsllink *vsllink, int out_length, int in_length);
217 static int vsllink_usb_write(struct vsllink *vsllink, int out_length);
218 static int vsllink_usb_read(struct vsllink *vsllink);
220 #if defined _DEBUG_USB_COMMS_ || defined _DEBUG_JTAG_IO_
221 static void vsllink_debug_buffer(uint8_t *buffer, int length);
224 static int vsllink_tms_data_len = 0;
225 static uint8_t* vsllink_tms_cmd_pos;
227 static int tap_length = 0;
228 static int tap_buffer_size = 0;
229 static uint8_t *tms_buffer = NULL;
230 static uint8_t *tdi_buffer = NULL;
231 static uint8_t *tdo_buffer = NULL;
234 static struct vsllink* vsllink_handle = NULL;
236 static void reset_command_pointer(void)
238 if (vsllink_mode == VSLLINK_MODE_NORMAL)
240 vsllink_usb_out_buffer[0] = VSLLINK_CMD_HW_JTAGSEQCMD;
241 vsllink_usb_out_buffer_idx = 3;
249 static int vsllink_execute_queue(void)
251 struct jtag_command *cmd = jtag_command_queue;
256 DEBUG_JTAG_IO("--------------------------------- vsllink -------------------------------------");
258 reset_command_pointer();
264 DEBUG_JTAG_IO("runtest %i cycles, end in %s", cmd->cmd.runtest->num_cycles, \
265 tap_state_name(cmd->cmd.runtest->end_state));
267 vsllink_end_state(cmd->cmd.runtest->end_state);
268 vsllink_runtest(cmd->cmd.runtest->num_cycles);
272 DEBUG_JTAG_IO("statemove end in %s", tap_state_name(cmd->cmd.statemove->end_state));
274 vsllink_end_state(cmd->cmd.statemove->end_state);
275 vsllink_state_move();
279 DEBUG_JTAG_IO("pathmove: %i states, end in %s", \
280 cmd->cmd.pathmove->num_states, \
281 tap_state_name(cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]));
283 vsllink_path_move(cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path);
287 vsllink_end_state(cmd->cmd.scan->end_state);
289 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
290 if (cmd->cmd.scan->ir_scan)
292 DEBUG_JTAG_IO("JTAG Scan write IR(%d bits), end in %s:", scan_size, tap_state_name(cmd->cmd.scan->end_state));
296 DEBUG_JTAG_IO("JTAG Scan write DR(%d bits), end in %s:", scan_size, tap_state_name(cmd->cmd.scan->end_state));
299 #ifdef _DEBUG_JTAG_IO_
300 vsllink_debug_buffer(buffer, (scan_size + 7) >> 3);
303 type = jtag_scan_type(cmd->cmd.scan);
305 vsllink_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size, cmd->cmd.scan);
309 DEBUG_JTAG_IO("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
311 vsllink_tap_execute();
313 if (cmd->cmd.reset->trst == 1)
315 tap_set_state(TAP_RESET);
317 vsllink_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
321 DEBUG_JTAG_IO("sleep %i", cmd->cmd.sleep->us);
322 vsllink_tap_execute();
323 jtag_sleep(cmd->cmd.sleep->us);
326 case JTAG_STABLECLOCKS:
327 DEBUG_JTAG_IO("add %d clocks", cmd->cmd.stableclocks->num_cycles);
328 switch (tap_get_state())
331 // tms should be '1' to stay in TAP_RESET mode
339 // in other mode, tms should be '0'
341 break; /* above stable states are OK */
343 LOG_ERROR("jtag_add_clocks() was called with TAP in non-stable state \"%s\"",
344 tap_state_name(tap_get_state()));
347 vsllink_stableclocks(cmd->cmd.stableclocks->num_cycles, scan_size);
351 LOG_ERROR("BUG: unknown JTAG command type encountered: %d", cmd->type);
357 return vsllink_tap_execute();
360 static int vsllink_speed(int speed)
364 vsllink_usb_out_buffer[0] = VSLLINK_CMD_SET_SPEED;
365 vsllink_usb_out_buffer[1] = (speed >> 0) & 0xff;
366 vsllink_usb_out_buffer[2] = (speed >> 8) & 0xFF;
368 result = vsllink_usb_write(vsllink_handle, 3);
376 LOG_ERROR("VSLLink setting speed failed (%d)", result);
377 return ERROR_JTAG_DEVICE_ERROR;
383 static int vsllink_khz(int khz, int *jtag_speed)
390 static int vsllink_speed_div(int jtag_speed, int *khz)
397 static int vsllink_init(void)
399 int check_cnt, to_tmp;
401 char version_str[100];
403 vsllink_usb_in_buffer = malloc(VSLLINK_BufferSize);
404 vsllink_usb_out_buffer = malloc(VSLLINK_BufferSize);
405 if ((vsllink_usb_in_buffer == NULL) || (vsllink_usb_out_buffer == NULL))
407 LOG_ERROR("Not enough memory");
411 vsllink_handle = vsllink_usb_open();
413 if (vsllink_handle == 0)
415 LOG_ERROR("Can't find USB JTAG Interface! Please check connection and permissions.");
416 return ERROR_JTAG_INIT_FAILED;
418 LOG_DEBUG("vsllink found on %04X:%04X", vsllink_usb_vid, vsllink_usb_pid);
420 to_tmp = VSLLINK_USB_TIMEOUT;
421 VSLLINK_USB_TIMEOUT = 100;
423 while (check_cnt < 5)
425 vsllink_simple_command(0x00);
426 result = vsllink_usb_read(vsllink_handle);
430 vsllink_usb_in_buffer[result] = 0;
431 VSLLINK_BufferSize = vsllink_usb_in_buffer[0] + (vsllink_usb_in_buffer[1] << 8);
432 strncpy(version_str, (char *)vsllink_usb_in_buffer + 2, sizeof(version_str));
433 LOG_INFO("%s", version_str);
435 // free the pre-alloc memroy
436 free(vsllink_usb_in_buffer);
437 free(vsllink_usb_out_buffer);
438 vsllink_usb_in_buffer = NULL;
439 vsllink_usb_out_buffer = NULL;
442 vsllink_usb_in_buffer = malloc(VSLLINK_BufferSize);
443 vsllink_usb_out_buffer = malloc(VSLLINK_BufferSize);
444 if ((vsllink_usb_in_buffer == NULL) || (vsllink_usb_out_buffer == NULL))
446 LOG_ERROR("Not enough memory");
451 LOG_INFO("buffer size for USB is %d bytes", VSLLINK_BufferSize);
453 // alloc memory for dma mode
454 if (vsllink_mode == VSLLINK_MODE_DMA)
456 tap_buffer_size = (VSLLINK_BufferSize - 3) / 2;
457 tms_buffer = (uint8_t*)malloc(tap_buffer_size);
458 tdi_buffer = (uint8_t*)malloc(tap_buffer_size);
459 tdo_buffer = (uint8_t*)malloc(tap_buffer_size);
460 if ((tms_buffer == NULL) || (tdi_buffer == NULL) || (tdo_buffer == NULL))
462 LOG_ERROR("Not enough memory");
468 vsllink_simple_command(VSLLINK_CMD_DISCONN);
473 // It's dangerout to proced
474 LOG_ERROR("VSLLink initial failed");
477 VSLLINK_USB_TIMEOUT = to_tmp;
479 /* Some older firmware versions sometimes fail if the
480 * voltage isn't read first.
482 vsllink_simple_command(0x01);
483 result = vsllink_usb_read(vsllink_handle);
485 LOG_WARNING("Fail to get target voltage");
487 LOG_INFO("Target runs at %d mV", vsllink_usb_in_buffer[0]
488 + (vsllink_usb_in_buffer[1] << 8));
490 // connect to vsllink
492 // initialize function pointers
493 if (vsllink_mode == VSLLINK_MODE_NORMAL)
496 vsllink_state_move = vsllink_state_move_normal;
497 vsllink_path_move = vsllink_path_move_normal;
498 vsllink_stableclocks = vsllink_stableclocks_normal;
499 vsllink_scan = vsllink_scan_normal;
501 vsllink_tap_init = vsllink_tap_init_normal;
502 vsllink_tap_execute = vsllink_tap_execute_normal;
503 vsllink_tap_ensure_space = vsllink_tap_ensure_space_normal;
505 LOG_INFO("vsllink run in NORMAL mode");
510 vsllink_state_move = vsllink_state_move_dma;
511 vsllink_path_move = vsllink_path_move_dma;
512 vsllink_stableclocks = vsllink_stableclocks_dma;
513 vsllink_scan = vsllink_scan_dma;
515 vsllink_tap_init = vsllink_tap_init_dma;
516 vsllink_tap_execute = vsllink_tap_execute_dma;
517 vsllink_tap_ensure_space = vsllink_tap_ensure_space_dma;
519 LOG_INFO("vsllink run in DMA mode");
522 // Set SRST and TRST to output, Set USR1 and USR2 to input
523 vsllink_usb_out_buffer[0] = VSLLINK_CMD_SET_PORTDIR;
524 vsllink_usb_out_buffer[1] = JTAG_PINMSK_SRST | JTAG_PINMSK_TRST | JTAG_PINMSK_USR1 | JTAG_PINMSK_USR2;
525 vsllink_usb_out_buffer[2] = JTAG_PINMSK_SRST | JTAG_PINMSK_TRST;
526 if (vsllink_usb_write(vsllink_handle, 3) != 3)
528 LOG_ERROR("VSLLink USB send data error");
534 LOG_INFO("VSLLink JTAG Interface ready");
541 static int vsllink_quit(void)
543 if ((vsllink_usb_in_buffer != NULL) && (vsllink_usb_out_buffer != NULL))
545 // Set all pins to input
546 vsllink_usb_out_buffer[0] = VSLLINK_CMD_SET_PORTDIR;
547 vsllink_usb_out_buffer[1] = JTAG_PINMSK_SRST | JTAG_PINMSK_TRST | JTAG_PINMSK_USR1 | JTAG_PINMSK_USR2;
548 vsllink_usb_out_buffer[2] = 0;
549 if (vsllink_usb_write(vsllink_handle, 3) != 3)
551 LOG_ERROR("VSLLink USB send data error");
556 vsllink_disconnect();
557 vsllink_usb_close(vsllink_handle);
558 vsllink_handle = NULL;
561 if (vsllink_usb_in_buffer != NULL)
563 free(vsllink_usb_in_buffer);
564 vsllink_usb_in_buffer = NULL;
566 if (vsllink_usb_out_buffer != NULL)
568 free(vsllink_usb_out_buffer);
569 vsllink_usb_out_buffer = NULL;
575 /***************************************************************************/
576 /* Queue command implementations */
577 static int vsllink_disconnect(void)
579 vsllink_simple_command(VSLLINK_CMD_DISCONN);
583 static int vsllink_connect(void)
585 char vsllink_str[100];
587 vsllink_usb_out_buffer[0] = VSLLINK_CMD_CONN;
588 vsllink_usb_out_buffer[1] = vsllink_mode;
589 vsllink_usb_message(vsllink_handle, 2, 0);
590 if (vsllink_usb_read(vsllink_handle) > 2)
592 strncpy(vsllink_str, (char *)vsllink_usb_in_buffer + 2, sizeof(vsllink_str));
593 LOG_INFO("%s", vsllink_str);
599 // when vsllink_tms_data_len > 0, vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] is the byte that need to be appended.
600 // length of VSLLINK_CMDJTAGSEQ_TMSBYTE has been set, no need to set it here.
601 static void vsllink_append_tms(void)
603 uint8_t tms_scan = VSLLINK_TAP_MOVE(tap_get_state(), tap_get_end_state());
605 struct insert_insignificant_operation *insert = \
606 &VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[tap_move_ndx(tap_get_state())][tap_move_ndx(tap_get_end_state())];
608 if (((tap_get_state() != TAP_RESET) && (tap_get_state() != TAP_IDLE) && (tap_get_state() != TAP_DRPAUSE) && (tap_get_state() != TAP_IRPAUSE)) || \
609 (vsllink_tms_data_len <= 0) || (vsllink_tms_data_len >= 8) || \
610 (vsllink_tms_cmd_pos == NULL))
612 LOG_ERROR("There MUST be some bugs in the driver");
616 tms2 = (tms_scan & VSLLINK_BIT_MSK[insert->insert_position]) << \
617 vsllink_tms_data_len;
618 if (insert->insert_value == 1)
620 tms2 |= VSLLINK_BIT_MSK[8 - vsllink_tms_data_len] << \
621 (vsllink_tms_data_len + insert->insert_position);
623 tms2 |= (tms_scan >> insert->insert_position) << \
624 (8 + insert->insert_position);
626 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] |= (tms2 >> 0) & 0xff;
627 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (tms2 >> 8) & 0xff;
629 vsllink_tms_data_len = 0;
630 vsllink_tms_cmd_pos = NULL;
633 static void vsllink_end_state(tap_state_t state)
635 if (tap_is_state_stable(state))
637 tap_set_end_state(state);
641 LOG_ERROR("BUG: %i is not a valid end state", state);
646 /* Goes to the end state. */
647 static void vsllink_state_move_normal(void)
649 if (vsllink_tms_data_len > 0)
651 vsllink_append_tms();
655 vsllink_tap_ensure_space(0, 2);
657 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE;
658 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_TAP_MOVE(tap_get_state(), tap_get_end_state());
661 tap_set_state(tap_get_end_state());
663 static void vsllink_state_move_dma(void)
665 int i, insert_length = (tap_length % 8) ? (8 - (tap_length % 8)) : 0;
666 struct insert_insignificant_operation *insert = \
667 &VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[tap_move_ndx(tap_get_state())][tap_move_ndx(tap_get_end_state())];
668 uint8_t tms_scan = VSLLINK_TAP_MOVE(tap_get_state(), tap_get_end_state());
670 if (tap_get_state() == TAP_RESET)
672 vsllink_tap_ensure_space(0, 8);
674 for (i = 0; i < 8; i++)
676 vsllink_tap_append_step(1, 0);
680 if (insert_length > 0)
682 vsllink_tap_ensure_space(0, 16);
684 for (i = 0; i < insert->insert_position; i++)
686 vsllink_tap_append_step((tms_scan >> i) & 1, 0);
688 for (i = 0; i < insert_length; i++)
690 vsllink_tap_append_step(insert->insert_value, 0);
692 for (i = insert->insert_position; i < 8; i++)
694 vsllink_tap_append_step((tms_scan >> i) & 1, 0);
699 vsllink_tap_ensure_space(0, 8);
701 for (i = 0; i < 8; i++)
703 vsllink_tap_append_step((tms_scan >> i) & 1, 0);
707 tap_set_state(tap_get_end_state());
710 // write tms from current vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx]
711 static void vsllink_add_path(int start, int num, tap_state_t *path)
715 for (i = start; i < (start + num); i++)
721 vsllink_usb_out_buffer_idx++;
723 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = 0;
726 if (path[i - start] == tap_state_transition(tap_get_state(), true))
728 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] |= 1 << (i & 7);
730 else if (path[i - start] == tap_state_transition(tap_get_state(), false))
736 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(tap_get_state()), tap_state_name(path[i]));
739 tap_set_state(path[i - start]);
741 if ((i > 0) && ((i & 7) == 0))
743 vsllink_usb_out_buffer_idx++;
744 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = 0;
747 tap_set_end_state(tap_get_state());
750 static void vsllink_path_move_normal(int num_states, tap_state_t *path)
752 int i, tms_len, tms_cmd_pos, path_idx = 0;
754 if (vsllink_tms_data_len > 0)
756 // there are vsllink_tms_data_len more tms bits to be shifted
757 // so there are vsllink_tms_data_len + num_states tms bits in all
758 tms_len = vsllink_tms_data_len + num_states;
761 // merge into last tms shift
764 // just append tms data to the last tms byte
765 vsllink_add_path(vsllink_tms_data_len, num_states, path);
767 else if (tms_len == 8)
769 // end last tms shift command
770 (*vsllink_tms_cmd_pos)--;
771 vsllink_add_path(vsllink_tms_data_len, num_states, path);
773 else if (tms_len < 16)
775 if ((*vsllink_tms_cmd_pos & VSLLINK_CMDJTAGSEQ_LENMSK) < VSLLINK_CMDJTAGSEQ_LENMSK)
777 // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most
778 // there is enought tms length in the current tms shift command
779 (*vsllink_tms_cmd_pos)++;
780 vsllink_add_path(vsllink_tms_data_len, num_states, path);
784 // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most
785 // not enough tms length in the current tms shift command
786 // so a new command should be added
787 // first decrease byte length of last tms shift command
788 (*vsllink_tms_cmd_pos)--;
789 // append tms data to the last tms byte
790 vsllink_add_path(vsllink_tms_data_len, 8 - vsllink_tms_data_len, path);
791 path += 8 - vsllink_tms_data_len;
792 // add new command(3 bytes)
793 vsllink_tap_ensure_space(0, 3);
794 vsllink_tms_cmd_pos = &vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx];
795 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE | 1;
796 vsllink_add_path(0, num_states - (8 - vsllink_tms_data_len), path);
799 else if (tms_len == 16)
801 // end last tms shift command
802 vsllink_add_path(vsllink_tms_data_len, num_states, path);
805 vsllink_tms_data_len = (vsllink_tms_data_len + num_states) & 7;
806 if (vsllink_tms_data_len == 0)
808 vsllink_tms_cmd_pos = NULL;
814 vsllink_add_path(vsllink_tms_data_len, 16 - vsllink_tms_data_len, path);
816 path += 16 - vsllink_tms_data_len;
817 num_states -= 16 - vsllink_tms_data_len;
818 vsllink_tms_data_len = 0;
819 vsllink_tms_cmd_pos = NULL;
825 // Normal operation, don't need to append tms data
826 vsllink_tms_data_len = num_states & 7;
828 while (num_states > 0)
830 if (num_states > ((VSLLINK_CMDJTAGSEQ_LENMSK + 1) * 8))
832 i = (VSLLINK_CMDJTAGSEQ_LENMSK + 1) * 8;
838 tms_len = (i + 7) >> 3;
839 vsllink_tap_ensure_space(0, tms_len + 2);
840 tms_cmd_pos = vsllink_usb_out_buffer_idx;
841 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE | (tms_len - 1);
843 vsllink_add_path(0, i, path + path_idx);
849 if (vsllink_tms_data_len > 0)
851 if (tms_len < (VSLLINK_CMDJTAGSEQ_LENMSK + 1))
853 vsllink_tms_cmd_pos = &vsllink_usb_out_buffer[tms_cmd_pos];
854 (*vsllink_tms_cmd_pos)++;
858 vsllink_usb_out_buffer[tms_cmd_pos]--;
860 tms_len = vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx];
861 vsllink_tap_ensure_space(0, 3);
862 vsllink_tms_cmd_pos = &vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx];
863 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE | 1;
864 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = tms_len;
869 static void vsllink_path_move_dma(int num_states, tap_state_t *path)
875 if ((8 - (tap_length & 7)) < num_states)
877 j = 8 - (tap_length & 7);
883 for (i = 0; i < j; i++)
885 if (path[i] == tap_state_transition(tap_get_state(), false))
887 vsllink_tap_append_step(0, 0);
889 else if (path[i] == tap_state_transition(tap_get_state(), true))
891 vsllink_tap_append_step(1, 0);
895 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(tap_get_state()), tap_state_name(path[i]));
898 tap_set_state(path[i]);
905 vsllink_tap_ensure_space(0, num_states);
907 for (i = 0; i < num_states; i++)
909 if (path[j + i] == tap_state_transition(tap_get_state(), false))
911 vsllink_tap_append_step(0, 0);
913 else if (path[j + i] == tap_state_transition(tap_get_state(), true))
915 vsllink_tap_append_step(1, 0);
919 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(tap_get_state()), tap_state_name(path[i]));
922 tap_set_state(path[j + i]);
926 tap_set_end_state(tap_get_state());
929 static void vsllink_stableclocks_normal(int num_cycles, int tms)
932 uint16_t tms_append_byte;
934 if (vsllink_tms_data_len > 0)
936 // there are vsllink_tms_data_len more tms bits to be shifted
937 // so there are vsllink_tms_data_len + num_cycles tms bits in all
938 tms_len = vsllink_tms_data_len + num_cycles;
941 // append '1' for tms
942 tms_append_byte = (uint16_t)((((1 << num_cycles) - 1) << vsllink_tms_data_len) & 0xFFFF);
946 // append '0' for tms
951 // merge into last tms shift
954 // just add to vsllink_tms_data_len
955 // same result if tun through
956 //vsllink_tms_data_len += num_cycles;
957 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] |= (uint8_t)(tms_append_byte & 0xFF);
959 else if (tms_len == 8)
961 // end last tms shift command
962 // just reduce it, and append last tms byte
963 (*vsllink_tms_cmd_pos)--;
964 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] |= (uint8_t)(tms_append_byte & 0xFF);
966 else if (tms_len < 16)
968 if ((*vsllink_tms_cmd_pos & VSLLINK_CMDJTAGSEQ_LENMSK) < VSLLINK_CMDJTAGSEQ_LENMSK)
970 // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most
971 // there is enought tms length in the current tms shift command
972 // increase the tms byte length by 1 and set the last byte to 0
973 (*vsllink_tms_cmd_pos)++;
974 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] |= (uint8_t)(tms_append_byte & 0xFF);
975 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = (uint8_t)(tms_append_byte >> 8);
979 // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most
980 // not enough tms length in the current tms shift command
981 // so a new command should be added
982 // first decrease byte length of last tms shift command
983 (*vsllink_tms_cmd_pos)--;
984 // append last tms byte and move the command pointer to the next empty position
985 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] |= (uint8_t)(tms_append_byte & 0xFF);
986 // add new command(3 bytes)
987 vsllink_tap_ensure_space(0, 3);
988 vsllink_tms_cmd_pos = &vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx];
989 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE | 1;
990 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = (uint8_t)(tms_append_byte >> 8);
993 else if (tms_len == 16)
995 // end last tms shift command
996 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] |= (uint8_t)(tms_append_byte & 0xFF);
997 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (uint8_t)(tms_append_byte >> 8);
1000 vsllink_tms_data_len = tms_len & 7;
1001 if (vsllink_tms_data_len == 0)
1003 vsllink_tms_cmd_pos = NULL;
1009 // more shifts will be needed
1010 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] |= (uint8_t)(tms_append_byte & 0xFF);
1011 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (uint8_t)(tms_append_byte >> 8);
1013 num_cycles -= 16 - vsllink_tms_data_len;
1014 vsllink_tms_data_len = 0;
1015 vsllink_tms_cmd_pos = NULL;
1018 // from here vsllink_tms_data_len == 0 or num_cycles == 0
1020 if (vsllink_tms_data_len > 0)
1026 LOG_ERROR("There MUST be some bugs in the driver");
1032 // get number of bytes left to be sent
1033 tms_len = num_cycles >> 3;
1036 vsllink_tap_ensure_space(1, 5);
1037 // if tms_len > 0, vsllink_tms_data_len == 0
1038 // so just add new command
1039 // LSB of the command byte is the tms value when do the shifting
1042 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSCLOCK | 1;
1046 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSCLOCK;
1048 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (tms_len >> 0) & 0xff;
1049 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (tms_len >> 8) & 0xff;
1050 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (tms_len >> 16) & 0xff;
1051 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (tms_len >> 24) & 0xff;
1053 vsllink_usb_in_want_length += 1;
1054 pending_scan_results_buffer[pending_scan_results_length].buffer = NULL;
1055 pending_scan_results_length++;
1057 if (tms_len > 0xFFFF)
1059 vsllink_tap_execute();
1064 vsllink_tms_data_len = num_cycles & 7;
1065 if (vsllink_tms_data_len > 0)
1067 vsllink_tap_ensure_space(0, 3);
1068 vsllink_tms_cmd_pos = &vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx];
1069 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE | 1;
1072 // append '1' for tms
1073 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = (1 << vsllink_tms_data_len) - 1;
1077 // append '0' for tms
1078 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = 0x00;
1083 static void vsllink_stableclocks_dma(int num_cycles, int tms)
1089 if ((8 - (tap_length & 7)) < num_cycles)
1091 cur_cycles = 8 - (tap_length & 7);
1095 cur_cycles = num_cycles;
1097 for (i = 0; i < cur_cycles; i++)
1099 vsllink_tap_append_step(tms, 0);
1101 num_cycles -= cur_cycles;
1104 while (num_cycles > 0)
1106 if (num_cycles > 8 * tap_buffer_size)
1108 cur_cycles = 8 * tap_buffer_size;
1112 cur_cycles = num_cycles;
1115 vsllink_tap_ensure_space(0, cur_cycles);
1117 for (i = 0; i < cur_cycles; i++)
1119 vsllink_tap_append_step(tms, 0);
1122 num_cycles -= cur_cycles;
1126 static void vsllink_runtest(int num_cycles)
1128 tap_state_t saved_end_state = tap_get_end_state();
1130 if (tap_get_state() != TAP_IDLE)
1132 // enter into IDLE state
1133 vsllink_end_state(TAP_IDLE);
1134 vsllink_state_move();
1137 vsllink_stableclocks(num_cycles, 0);
1141 vsllink_end_state(saved_end_state);
1142 tap_set_state(TAP_IDLE);
1143 if (tap_get_end_state() != TAP_IDLE)
1145 vsllink_state_move();
1149 static void vsllink_scan_normal(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size, struct scan_command *command)
1151 tap_state_t saved_end_state;
1152 uint8_t bits_left, tms_tmp, tdi_len;
1160 tdi_len = ((scan_size + 7) >> 3);
1161 if ((tdi_len + 7) > VSLLINK_BufferSize)
1163 LOG_ERROR("Your implementation of VSLLink has not enough buffer");
1167 saved_end_state = tap_get_end_state();
1169 /* Move to appropriate scan state */
1170 vsllink_end_state(ir_scan ? TAP_IRSHIFT : TAP_DRSHIFT);
1172 if (vsllink_tms_data_len > 0)
1174 if (tap_get_state() == tap_get_end_state())
1176 // already in IRSHIFT or DRSHIFT state
1177 // merge tms data in the last tms shift command into next scan command
1178 if (*vsllink_tms_cmd_pos < 1)
1180 LOG_ERROR("There MUST be some bugs in the driver");
1183 else if (*vsllink_tms_cmd_pos < 2)
1185 tms_tmp = vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx];
1186 vsllink_usb_out_buffer_idx--;
1190 tms_tmp = vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx];
1191 *vsllink_tms_cmd_pos -= 2;
1194 vsllink_tap_ensure_space(1, tdi_len + 7);
1195 // VSLLINK_CMDJTAGSEQ_SCAN ored by 1 means that tms_before is valid
1196 // which is merged from the last tms shift command
1197 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_SCAN | 1;
1198 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = ((tdi_len + 1) >> 0) & 0xff;
1199 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = ((tdi_len + 1) >> 8) & 0xff;
1200 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = tms_tmp;
1201 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = buffer[0] << (8 - vsllink_tms_data_len);
1203 for (i = 0; i < tdi_len; i++)
1205 buffer[i] >>= 8 - vsllink_tms_data_len;
1208 buffer[i] += buffer[i + 1] << vsllink_tms_data_len;
1212 vsllink_tap_append_scan_normal(scan_size - vsllink_tms_data_len, buffer, command, vsllink_tms_data_len);
1213 scan_size -= 8 - vsllink_tms_data_len;
1214 vsllink_tms_data_len = 0;
1218 vsllink_state_move();
1219 vsllink_tap_ensure_space(1, tdi_len + 5);
1221 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_SCAN;
1222 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (tdi_len >> 0) & 0xff;
1223 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (tdi_len >> 8) & 0xff;
1225 vsllink_tap_append_scan_normal(scan_size, buffer, command, 0);
1230 vsllink_tap_ensure_space(1, tdi_len + 7);
1232 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_SCAN | 1;
1233 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = ((tdi_len + 1) >> 0) & 0xff;
1234 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = ((tdi_len + 1)>> 8) & 0xff;
1235 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_TAP_MOVE(tap_get_state(), tap_get_end_state());
1236 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = 0;
1238 vsllink_tap_append_scan_normal(scan_size, buffer, command, 8);
1240 vsllink_end_state(saved_end_state);
1242 bits_left = scan_size & 0x07;
1243 tap_set_state(ir_scan ? TAP_IRPAUSE : TAP_DRPAUSE);
1247 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = 1 << (bits_left - 1);
1251 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = 1 << 7;
1254 if (tap_get_state() != tap_get_end_state())
1256 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_TAP_MOVE(tap_get_state(), tap_get_end_state());
1260 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = 0;
1263 tap_set_state(tap_get_end_state());
1265 static void vsllink_scan_dma(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size, struct scan_command *command)
1267 tap_state_t saved_end_state;
1269 saved_end_state = tap_get_end_state();
1271 /* Move to appropriate scan state */
1272 vsllink_end_state(ir_scan ? TAP_IRSHIFT : TAP_DRSHIFT);
1274 vsllink_state_move();
1275 vsllink_end_state(saved_end_state);
1278 vsllink_tap_append_scan_dma(scan_size, buffer, command);
1280 tap_set_state(ir_scan ? TAP_IRPAUSE : TAP_DRPAUSE);
1281 while (tap_length % 8 != 0)
1284 vsllink_tap_append_step(0, 0);
1287 if (tap_get_state() != tap_get_end_state())
1289 vsllink_state_move();
1293 static void vsllink_reset(int trst, int srst)
1297 LOG_DEBUG("trst: %i, srst: %i", trst, srst);
1299 /* Signals are active low */
1300 vsllink_usb_out_buffer[0] = VSLLINK_CMD_SET_PORT;
1301 vsllink_usb_out_buffer[1] = JTAG_PINMSK_SRST | JTAG_PINMSK_TRST;
1302 vsllink_usb_out_buffer[2] = 0;
1305 vsllink_usb_out_buffer[2] |= JTAG_PINMSK_SRST;
1309 vsllink_usb_out_buffer[2] |= JTAG_PINMSK_TRST;
1312 result = vsllink_usb_write(vsllink_handle, 3);
1315 LOG_ERROR("VSLLink command VSLLINK_CMD_SET_PORT failed (%d)", result);
1319 static void vsllink_simple_command(uint8_t command)
1323 DEBUG_JTAG_IO("0x%02x", command);
1325 vsllink_usb_out_buffer[0] = command;
1326 result = vsllink_usb_write(vsllink_handle, 1);
1330 LOG_ERROR("VSLLink command 0x%02x failed (%d)", command, result);
1334 COMMAND_HANDLER(vsllink_handle_mode_command)
1336 if (CMD_ARGC != 1) {
1337 LOG_ERROR("parameter error, should be one parameter for VID");
1341 if (!strcmp(CMD_ARGV[0], "normal"))
1343 vsllink_mode = VSLLINK_MODE_NORMAL;
1345 else if (!strcmp(CMD_ARGV[0], "dma"))
1347 vsllink_mode = VSLLINK_MODE_DMA;
1351 LOG_ERROR("invalid vsllink_mode: %s", CMD_ARGV[0]);
1358 COMMAND_HANDLER(vsllink_handle_usb_vid_command)
1362 LOG_ERROR("parameter error, should be one parameter for VID");
1366 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[0], vsllink_usb_vid);
1370 COMMAND_HANDLER(vsllink_handle_usb_pid_command)
1374 LOG_ERROR("parameter error, should be one parameter for PID");
1377 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[0], vsllink_usb_pid);
1381 COMMAND_HANDLER(vsllink_handle_usb_bulkin_command)
1385 LOG_ERROR("parameter error, should be one parameter for BULKIN endpoint");
1389 COMMAND_PARSE_NUMBER(u8, CMD_ARGV[0], vsllink_usb_bulkin);
1391 vsllink_usb_bulkin |= 0x80;
1396 COMMAND_HANDLER(vsllink_handle_usb_bulkout_command)
1400 LOG_ERROR("parameter error, should be one parameter for BULKOUT endpoint");
1404 COMMAND_PARSE_NUMBER(u8, CMD_ARGV[0], vsllink_usb_bulkout);
1406 vsllink_usb_bulkout &= ~0x80;
1411 COMMAND_HANDLER(vsllink_handle_usb_interface_command)
1415 LOG_ERROR("parameter error, should be one parameter for interface number");
1419 COMMAND_PARSE_NUMBER(u8, CMD_ARGV[0], vsllink_usb_interface);
1423 /***************************************************************************/
1424 /* VSLLink tap functions */
1426 static void vsllink_tap_init_normal(void)
1428 vsllink_usb_out_buffer_idx = 0;
1429 vsllink_usb_in_want_length = 0;
1430 pending_scan_results_length = 0;
1432 static void vsllink_tap_init_dma(void)
1435 pending_scan_results_length = 0;
1438 static void vsllink_tap_ensure_space_normal(int scans, int length)
1440 int available_scans = MAX_PENDING_SCAN_RESULTS - pending_scan_results_length;
1441 int available_bytes = VSLLINK_BufferSize - vsllink_usb_out_buffer_idx;
1443 if (scans > available_scans || length > available_bytes)
1445 vsllink_tap_execute();
1448 static void vsllink_tap_ensure_space_dma(int scans, int length)
1450 int available_scans = MAX_PENDING_SCAN_RESULTS - pending_scan_results_length;
1451 int available_bytes = tap_buffer_size * 8 - tap_length;
1453 if (scans > available_scans || length > available_bytes)
1455 vsllink_tap_execute();
1459 static void vsllink_tap_append_step(int tms, int tdi)
1462 int index = tap_length / 8;
1464 if (index < tap_buffer_size)
1466 int bit_index = tap_length % 8;
1467 uint8_t bit = 1 << bit_index;
1471 tms_buffer[index] |= bit;
1475 tms_buffer[index] &= ~bit;
1480 tdi_buffer[index] |= bit;
1484 tdi_buffer[index] &= ~bit;
1491 LOG_ERROR("buffer overflow, tap_length=%d", tap_length);
1495 static void vsllink_tap_append_scan_normal(int length, uint8_t *buffer, struct scan_command *command, int offset)
1497 struct pending_scan_result *pending_scan_result = &pending_scan_results_buffer[pending_scan_results_length];
1502 vsllink_usb_in_want_length += ((length + 7) >> 3) + 1;
1506 vsllink_usb_in_want_length += (length + 7) >> 3;
1508 pending_scan_result->length = length;
1509 pending_scan_result->offset = offset;
1510 pending_scan_result->command = command;
1511 pending_scan_result->buffer = buffer;
1513 for (i = 0; i < ((length + 7) >> 3); i++)
1515 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = buffer[i];
1518 pending_scan_results_length++;
1520 static void vsllink_tap_append_scan_dma(int length, uint8_t *buffer, struct scan_command *command)
1522 struct pending_scan_result *pending_scan_result;
1523 int len_tmp, len_all, i;
1526 while (len_all < length)
1528 if ((length - len_all) > tap_buffer_size * 8)
1530 len_tmp = tap_buffer_size * 8;
1534 len_tmp = length - len_all;
1537 vsllink_tap_ensure_space(1, (len_tmp + 7) & ~7);
1539 pending_scan_result = &pending_scan_results_buffer[pending_scan_results_length];
1540 pending_scan_result->offset = tap_length;
1541 pending_scan_result->length = len_tmp;
1542 pending_scan_result->command = command;
1543 pending_scan_result->buffer = buffer + len_all / 8;
1545 for (i = 0; i < len_tmp; i++)
1547 vsllink_tap_append_step(((len_all + i) < length-1 ? 0 : 1), (buffer[(len_all + i)/8] >> ((len_all + i)%8)) & 1);
1550 pending_scan_results_length++;
1555 /* Pad and send a tap sequence to the device, and receive the answer.
1556 * For the purpose of padding we assume that we are in reset or idle or pause state. */
1557 static int vsllink_tap_execute_normal(void)
1563 if (vsllink_tms_data_len > 0)
1565 if ((tap_get_state() != TAP_RESET) && (tap_get_state() != TAP_IDLE) && (tap_get_state() != TAP_IRPAUSE) && (tap_get_state() != TAP_DRPAUSE))
1567 LOG_WARNING("%s is not in RESET or IDLE or PAUSR state", tap_state_name(tap_get_state()));
1570 if (vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] & (1 << (vsllink_tms_data_len - 1)))
1572 // last tms bit is '1'
1573 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] |= 0xFF << vsllink_tms_data_len;
1574 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = 0xFF;
1575 vsllink_tms_data_len = 0;
1579 // last tms bit is '0'
1580 vsllink_usb_out_buffer_idx++;
1581 vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = 0;
1582 vsllink_tms_data_len = 0;
1586 if (vsllink_usb_out_buffer_idx > 3)
1588 if (vsllink_usb_out_buffer[0] == VSLLINK_CMD_HW_JTAGSEQCMD)
1590 vsllink_usb_out_buffer[1] = (vsllink_usb_out_buffer_idx >> 0) & 0xff;
1591 vsllink_usb_out_buffer[2] = (vsllink_usb_out_buffer_idx >> 8) & 0xff;
1594 result = vsllink_usb_message(vsllink_handle, vsllink_usb_out_buffer_idx, vsllink_usb_in_want_length);
1596 if (result == vsllink_usb_in_want_length)
1598 for (i = 0; i < pending_scan_results_length; i++)
1600 struct pending_scan_result *pending_scan_result = &pending_scan_results_buffer[i];
1601 uint8_t *buffer = pending_scan_result->buffer;
1602 int length = pending_scan_result->length;
1603 int offset = pending_scan_result->offset;
1604 struct scan_command *command = pending_scan_result->command;
1608 // IRSHIFT or DRSHIFT
1609 buf_set_buf(vsllink_usb_in_buffer, first * 8 + offset, buffer, 0, length);
1610 first += (length + offset + 7) >> 3;
1612 DEBUG_JTAG_IO("JTAG scan read(%d bits):", length);
1613 #ifdef _DEBUG_JTAG_IO_
1614 vsllink_debug_buffer(buffer, (length + 7) >> 3);
1617 if (jtag_read_buffer(buffer, command) != ERROR_OK)
1620 return ERROR_JTAG_QUEUE_FAILED;
1623 free(pending_scan_result->buffer);
1624 pending_scan_result->buffer = NULL;
1634 LOG_ERROR("vsllink_tap_execute, wrong result %d, expected %d", result, vsllink_usb_in_want_length);
1635 return ERROR_JTAG_QUEUE_FAILED;
1640 reset_command_pointer();
1644 static int vsllink_tap_execute_dma(void)
1652 /* Pad last byte so that tap_length is divisible by 8 */
1653 while (tap_length % 8 != 0)
1655 /* More of the last TMS value keeps us in the same state,
1656 * analogous to free-running JTAG interfaces. */
1657 vsllink_tap_append_step(last_tms, 0);
1659 byte_length = tap_length / 8;
1661 vsllink_usb_out_buffer[0] = VSLLINK_CMD_HW_JTAGRAWCMD;
1662 vsllink_usb_out_buffer[1] = ((byte_length * 2 + 3) >> 0) & 0xff; // package size
1663 vsllink_usb_out_buffer[2] = ((byte_length * 2 + 3) >> 8) & 0xff;
1665 memcpy(&vsllink_usb_out_buffer[3], tdi_buffer, byte_length);
1666 memcpy(&vsllink_usb_out_buffer[3 + byte_length], tms_buffer, byte_length);
1668 result = vsllink_usb_message(vsllink_handle, 3 + 2 * byte_length, byte_length);
1669 if (result == byte_length)
1671 for (i = 0; i < pending_scan_results_length; i++)
1673 struct pending_scan_result *pending_scan_result = &pending_scan_results_buffer[i];
1674 uint8_t *buffer = pending_scan_result->buffer;
1675 int length = pending_scan_result->length;
1676 int first = pending_scan_result->offset;
1678 struct scan_command *command = pending_scan_result->command;
1679 buf_set_buf(vsllink_usb_in_buffer, first, buffer, 0, length);
1681 DEBUG_JTAG_IO("JTAG scan read(%d bits, from %d bits):", length, first);
1682 #ifdef _DEBUG_JTAG_IO_
1683 vsllink_debug_buffer(buffer, (length + 7) >> 3);
1686 if (jtag_read_buffer(buffer, command) != ERROR_OK)
1689 return ERROR_JTAG_QUEUE_FAILED;
1692 if (pending_scan_result->buffer != NULL)
1694 free(pending_scan_result->buffer);
1700 LOG_ERROR("vsllink_tap_execute, wrong result %d, expected %d", result, byte_length);
1701 return ERROR_JTAG_QUEUE_FAILED;
1710 /*****************************************************************************/
1711 /* VSLLink USB low-level functions */
1713 static struct vsllink* vsllink_usb_open(void)
1717 const uint16_t vids[] = { vsllink_usb_vid, 0 };
1718 const uint16_t pids[] = { vsllink_usb_pid, 0 };
1719 struct usb_dev_handle *dev;
1720 if (jtag_usb_open(vids, pids, &dev) != ERROR_OK)
1723 /* usb_set_configuration required under win32 */
1724 struct usb_device *udev = usb_device(dev);
1725 int ret = usb_set_configuration(dev, udev->config[0].bConfigurationValue);
1728 LOG_ERROR("fail to set configuration to %d (error %d)."
1729 "Not enough permissions for the device?",
1730 udev->config[0].bConfigurationValue, ret);
1733 ret = usb_claim_interface(dev, vsllink_usb_interface);
1736 LOG_ERROR("fail to claim interface %d, %d returned",
1737 vsllink_usb_interface, ret);
1742 * This makes problems under Mac OS X. And is not needed
1743 * under Windows. Hopefully this will not break a linux build
1745 usb_set_altinterface(dev, 0);
1748 struct vsllink *result = malloc(sizeof(struct vsllink));
1749 result->usb_handle = dev;
1753 static void vsllink_usb_close(struct vsllink *vsllink)
1757 ret = usb_release_interface(vsllink->usb_handle, vsllink_usb_interface);
1760 LOG_ERROR("fail to release interface %d, %d returned", vsllink_usb_interface, ret);
1764 ret = usb_close(vsllink->usb_handle);
1767 LOG_ERROR("fail to close usb, %d returned", ret);
1774 /* Send a message and receive the reply. */
1775 static int vsllink_usb_message(struct vsllink *vsllink, int out_length, int in_length)
1779 result = vsllink_usb_write(vsllink, out_length);
1780 if (result == out_length)
1784 result = vsllink_usb_read(vsllink);
1785 if (result == in_length)
1791 LOG_ERROR("usb_bulk_read failed (requested=%d, result=%d)", in_length, result);
1799 LOG_ERROR("usb_bulk_write failed (requested=%d, result=%d)", out_length, result);
1804 /* Write data from out_buffer to USB. */
1805 static int vsllink_usb_write(struct vsllink *vsllink, int out_length)
1809 if (out_length > VSLLINK_BufferSize)
1811 LOG_ERROR("vsllink_write illegal out_length=%d (max=%d)", out_length, VSLLINK_BufferSize);
1815 result = usb_bulk_write(vsllink->usb_handle, vsllink_usb_bulkout, \
1816 (char *)vsllink_usb_out_buffer, out_length, VSLLINK_USB_TIMEOUT);
1818 DEBUG_JTAG_IO("vsllink_usb_write, out_length = %d, result = %d", out_length, result);
1820 #ifdef _DEBUG_USB_COMMS_
1821 LOG_DEBUG("USB out:");
1822 vsllink_debug_buffer(vsllink_usb_out_buffer, out_length);
1825 #ifdef _VSLLINK_IN_DEBUG_MODE_
1832 /* Read data from USB into in_buffer. */
1833 static int vsllink_usb_read(struct vsllink *vsllink)
1835 int result = usb_bulk_read(vsllink->usb_handle, vsllink_usb_bulkin, \
1836 (char *)vsllink_usb_in_buffer, VSLLINK_BufferSize, VSLLINK_USB_TIMEOUT);
1838 DEBUG_JTAG_IO("vsllink_usb_read, result = %d", result);
1840 #ifdef _DEBUG_USB_COMMS_
1841 LOG_DEBUG("USB in:");
1842 vsllink_debug_buffer(vsllink_usb_in_buffer, result);
1847 #define BYTES_PER_LINE 16
1849 #if defined _DEBUG_USB_COMMS_ || defined _DEBUG_JTAG_IO_
1850 static void vsllink_debug_buffer(uint8_t *buffer, int length)
1857 for (i = 0; i < length; i += BYTES_PER_LINE)
1859 snprintf(line, 5, "%04x", i);
1860 for (j = i; j < i + BYTES_PER_LINE && j < length; j++)
1862 snprintf(s, 4, " %02x", buffer[j]);
1865 LOG_DEBUG("%s", line);
1868 #endif // _DEBUG_USB_COMMS_ || _DEBUG_JTAG_IO_
1870 static const struct command_registration vsllink_command_handlers[] = {
1872 .name = "vsllink_usb_vid",
1873 .handler = &vsllink_handle_usb_vid_command,
1874 .mode = COMMAND_CONFIG,
1877 .name = "vsllink_usb_pid",
1878 .handler = &vsllink_handle_usb_pid_command,
1879 .mode = COMMAND_CONFIG,
1882 .name = "vsllink_usb_bulkin",
1883 .handler = &vsllink_handle_usb_bulkin_command,
1884 .mode = COMMAND_CONFIG,
1887 .name = "vsllink_usb_bulkout",
1888 .handler = &vsllink_handle_usb_bulkout_command,
1889 .mode = COMMAND_CONFIG,
1892 .name = "vsllink_usb_interface",
1893 .handler = &vsllink_handle_usb_interface_command,
1894 .mode = COMMAND_CONFIG,
1897 .name = "vsllink_mode",
1898 .handler = &vsllink_handle_mode_command,
1899 .mode = COMMAND_CONFIG,
1901 COMMAND_REGISTRATION_DONE
1904 struct jtag_interface vsllink_interface = {
1906 .commands = vsllink_command_handlers,
1908 .init = vsllink_init,
1909 .quit = vsllink_quit,
1911 .speed = vsllink_speed,
1912 .speed_div = vsllink_speed_div,
1913 .execute_queue = vsllink_execute_queue,