src/jtag/usbprog.c

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by Benedikt Sauter                                 *
   3  *   sauter@ixbat.de                                                       *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20
  21 /*
  22  * This file is based on Dominic Rath's amt_jtagaccel.c.
  23  *
  24  * usbprog is a free programming adapter. You can easily install
  25  * different firmware versions from an "online pool" over USB.
  26  * The adapter can be used for programming and debugging AVR and ARM
  27  * processors, as USB to RS232 converter, as JTAG interface or as
  28  * simple I/O interface (5 lines).
  29  *
  30  * http://www.embedded-projects.net/usbprog
  31  */
  32
  33 #ifdef HAVE_CONFIG_H
  34 #include "config.h"
  35 #endif
  36
  37 #include "interface.h"
  38 #include "commands.h"
  39
  40 #include <usb.h>
  41
  42
  43 #define VID 0x1781
  44 #define PID 0x0c63
  45
  46 /* Pins at usbprog */
  47 #define TDO_BIT                 0
  48 #define TDI_BIT                 3
  49 #define TCK_BIT                 2
  50 #define TMS_BIT                 1
  51
  52 static void usbprog_end_state(tap_state_t state);
  53 static void usbprog_state_move(void);
  54 static void usbprog_path_move(struct pathmove_command *cmd);
  55 static void usbprog_runtest(int num_cycles);
  56 static void usbprog_scan(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size);
  57
  58 #define UNKOWN_COMMAND  0x00
  59 #define PORT_DIRECTION  0x01
  60 #define PORT_SET                0x02
  61 #define PORT_GET                0x03
  62 #define PORT_SETBIT             0x04
  63 #define PORT_GETBIT             0x05
  64 #define WRITE_TDI               0x06
  65 #define READ_TDO                0x07
  66 #define WRITE_AND_READ  0x08
  67 #define WRITE_TMS               0x09
  68 #define WRITE_TMS_CHAIN 0x0A
  69
  70 struct usbprog_jtag
  71 {
  72         struct usb_dev_handle* usb_handle;
  73 };
  74
  75 static struct usbprog_jtag * usbprog_jtag_handle;
  76
  77 static struct usbprog_jtag* usbprog_jtag_open(void);
  78 //static void usbprog_jtag_close(struct usbprog_jtag *usbprog_jtag);
  79 static void usbprog_jtag_init(struct usbprog_jtag *usbprog_jtag);
  80 static unsigned char usbprog_jtag_message(struct usbprog_jtag *usbprog_jtag, char *msg, int msglen);
  81
  82 static void usbprog_jtag_read_tdo(struct usbprog_jtag *usbprog_jtag, char * buffer, int size);
  83 static void usbprog_jtag_write_tdi(struct usbprog_jtag *usbprog_jtag, char * buffer, int size);
  84 static void usbprog_jtag_write_and_read(struct usbprog_jtag *usbprog_jtag, char * buffer, int size);
  85 static void usbprog_jtag_write_tms(struct usbprog_jtag *usbprog_jtag, char tms_scan);
  86
  87 static char tms_chain[64];
  88 static int tms_chain_index;
  89
  90 static void usbprog_jtag_tms_collect(char tms_scan);
  91 static void usbprog_jtag_tms_send(struct usbprog_jtag *usbprog_jtag);
  92
  93 static void usbprog_write(int tck, int tms, int tdi);
  94 static void usbprog_reset(int trst, int srst);
  95
  96 static void usbprog_jtag_set_direction(struct usbprog_jtag *usbprog_jtag, unsigned char direction);
  97 static void usbprog_jtag_write_slice(struct usbprog_jtag *usbprog_jtag,unsigned char value);
  98 //static unsigned char usbprog_jtag_get_port(struct usbprog_jtag *usbprog_jtag);
  99 static void usbprog_jtag_set_bit(struct usbprog_jtag *usbprog_jtag,int bit, int value);
 100 //static int usbprog_jtag_get_bit(struct usbprog_jtag *usbprog_jtag, int bit);
 101
 102 static int usbprog_speed(int speed)
 103 {
 104         return ERROR_OK;
 105 }
 106
 107 static int usbprog_execute_queue(void)
 108 {
 109         struct jtag_command *cmd = jtag_command_queue; /* currently processed command */
 110         int scan_size;
 111         enum scan_type type;
 112         uint8_t *buffer;
 113
 114         while (cmd)
 115         {
 116                 switch (cmd->type)
 117                 {
 118                         case JTAG_RESET:
 119 #ifdef _DEBUG_JTAG_IO_
 120                                 LOG_DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
 121 #endif
 122                                 if (cmd->cmd.reset->trst == 1)
 123                                 {
 124                                         tap_set_state(TAP_RESET);
 125                                 }
 126                                 usbprog_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
 127                                 break;
 128                         case JTAG_RUNTEST:
 129 #ifdef _DEBUG_JTAG_IO_
 130                                 LOG_DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state);
 131 #endif
 132                                 usbprog_end_state(cmd->cmd.runtest->end_state);
 133                                 usbprog_runtest(cmd->cmd.runtest->num_cycles);
 134                                 break;
 135                         case JTAG_STATEMOVE:
 136 #ifdef _DEBUG_JTAG_IO_
 137                                 LOG_DEBUG("statemove end in %i", cmd->cmd.statemove->end_state);
 138 #endif
 139                                 usbprog_end_state(cmd->cmd.statemove->end_state);
 140                                 usbprog_state_move();
 141                                 break;
 142                         case JTAG_PATHMOVE:
 143 #ifdef _DEBUG_JTAG_IO_
 144                                 LOG_DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states,
 145                                         cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
 146 #endif
 147                                 usbprog_path_move(cmd->cmd.pathmove);
 148                                 break;
 149                         case JTAG_SCAN:
 150 #ifdef _DEBUG_JTAG_IO_
 151                                 LOG_DEBUG("scan end in %i", cmd->cmd.scan->end_state);
 152 #endif
 153                                 usbprog_end_state(cmd->cmd.scan->end_state);
 154                                 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
 155                                 type = jtag_scan_type(cmd->cmd.scan);
 156                                 usbprog_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
 157                                 if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
 158                                         return ERROR_JTAG_QUEUE_FAILED;
 159                                 if (buffer)
 160                                         free(buffer);
 161                                 break;
 162                         case JTAG_SLEEP:
 163 #ifdef _DEBUG_JTAG_IO_
 164                                 LOG_DEBUG("sleep %i", cmd->cmd.sleep->us);
 165 #endif
 166                                 jtag_sleep(cmd->cmd.sleep->us);
 167                                         break;
 168                         default:
 169                                 LOG_ERROR("BUG: unknown JTAG command type encountered");
 170                                 exit(-1);
 171                 }
 172
 173                 cmd = cmd->next;
 174         }
 175
 176         return ERROR_OK;
 177 }
 178
 179 static int usbprog_init(void)
 180 {
 181         usbprog_jtag_handle = usbprog_jtag_open();
 182
 183         tms_chain_index = 0;
 184         if (usbprog_jtag_handle == 0)
 185         {
 186                 LOG_ERROR("Can't find USB JTAG Interface! Please check connection and permissions.");
 187                 return ERROR_JTAG_INIT_FAILED;
 188         }
 189
 190         LOG_INFO("USB JTAG Interface ready!");
 191
 192         usbprog_jtag_init(usbprog_jtag_handle);
 193         usbprog_reset(0, 0);
 194         usbprog_write(0, 0, 0);
 195
 196         return ERROR_OK;
 197 }
 198
 199 static int usbprog_quit(void)
 200 {
 201         return ERROR_OK;
 202 }
 203
 204 /*************** jtag execute commands **********************/
 205 static void usbprog_end_state(tap_state_t state)
 206 {
 207         if (tap_is_state_stable(state))
 208                 tap_set_end_state(state);
 209         else
 210         {
 211                 LOG_ERROR("BUG: %i is not a valid end state", state);
 212                 exit(-1);
 213         }
 214 }
 215
 216 static void usbprog_state_move(void)
 217 {
 218         int i = 0, tms = 0;
 219         uint8_t tms_scan = tap_get_tms_path(tap_get_state(), tap_get_end_state());
 220         int tms_count = tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
 221
 222         usbprog_jtag_write_tms(usbprog_jtag_handle, (char)tms_scan);
 223         for (i = 0; i < tms_count; i++)
 224         {
 225                 tms = (tms_scan >> i) & 1;
 226         }
 227
 228         tap_set_state(tap_get_end_state());
 229 }
 230
 231 static void usbprog_path_move(struct pathmove_command *cmd)
 232 {
 233         int num_states = cmd->num_states;
 234         int state_count;
 235
 236         /* There may be queued transitions, and before following a specified
 237            path, we must flush those queued transitions */
 238         usbprog_jtag_tms_send(usbprog_jtag_handle);
 239
 240         state_count = 0;
 241         while (num_states)
 242         {
 243                 if (tap_state_transition(tap_get_state(), false) == cmd->path[state_count])
 244                 {
 245                         /* LOG_INFO("1"); */
 246                         usbprog_write(0, 0, 0);
 247                         usbprog_write(1, 0, 0);
 248                 }
 249                 else if (tap_state_transition(tap_get_state(), true) == cmd->path[state_count])
 250                 {
 251                         /* LOG_INFO("2"); */
 252                         usbprog_write(0, 1, 0);
 253                         usbprog_write(1, 1, 0);
 254                 }
 255                 else
 256                 {
 257                         LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(tap_get_state()), tap_state_name(cmd->path[state_count]));
 258                         exit(-1);
 259                 }
 260
 261                 tap_set_state(cmd->path[state_count]);
 262                 state_count++;
 263                 num_states--;
 264         }
 265
 266         tap_set_end_state(tap_get_state());
 267 }
 268
 269 static void usbprog_runtest(int num_cycles)
 270 {
 271         int i;
 272
 273         /* only do a state_move when we're not already in IDLE */
 274         if (tap_get_state() != TAP_IDLE)
 275         {
 276                 usbprog_end_state(TAP_IDLE);
 277                 usbprog_state_move();
 278         }
 279
 280         /* execute num_cycles */
 281         if (num_cycles > 0)
 282         {
 283                 usbprog_jtag_tms_send(usbprog_jtag_handle);
 284                 usbprog_write(0, 0, 0);
 285         }
 286         else
 287         {
 288                 usbprog_jtag_tms_send(usbprog_jtag_handle);
 289                 /* LOG_INFO("NUM CYCLES %i",num_cycles); */
 290         }
 291
 292         for (i = 0; i < num_cycles; i++)
 293         {
 294                 usbprog_write(1, 0, 0);
 295                 usbprog_write(0, 0, 0);
 296         }
 297
 298 #ifdef _DEBUG_JTAG_IO_
 299         LOG_DEBUG("runtest: cur_state %s end_state %s", tap_state_name(tap_get_state()), tap_state_name(tap_get_end_state()));
 300 #endif
 301
 302         /* finish in end_state */
 303         /*
 304         usbprog_end_state(saved_end_state);
 305         if (tap_get_state() != tap_get_end_state())
 306                 usbprog_state_move();
 307         */
 308 }
 309
 310 static void usbprog_scan(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size)
 311 {
 312         tap_state_t saved_end_state = tap_get_end_state();
 313
 314         if (ir_scan)
 315                 usbprog_end_state(TAP_IRSHIFT);
 316         else
 317                 usbprog_end_state(TAP_DRSHIFT);
 318
 319         /* Only move if we're not already there */
 320         if (tap_get_state() != tap_get_end_state())
 321                 usbprog_state_move();
 322
 323         usbprog_end_state(saved_end_state);
 324
 325         usbprog_jtag_tms_send(usbprog_jtag_handle);
 326
 327         void (*f)(struct usbprog_jtag *usbprog_jtag, char * buffer, int size);
 328         switch (type) {
 329         case SCAN_OUT: f = &usbprog_jtag_write_tdi; break;
 330         case SCAN_IN: f = &usbprog_jtag_read_tdo; break;
 331         case SCAN_IO: f = &usbprog_jtag_write_and_read; break;
 332         default:
 333                 LOG_ERROR("unknown scan type: %i", type);
 334                 exit(-1);
 335         }
 336         f(usbprog_jtag_handle, (char *)buffer, scan_size);
 337
 338         /* The adapter does the transition to PAUSE internally */
 339         if (ir_scan)
 340                 tap_set_state(TAP_IRPAUSE);
 341         else
 342                 tap_set_state(TAP_DRPAUSE);
 343
 344         if (tap_get_state() != tap_get_end_state())
 345                 usbprog_state_move();
 346 }
 347
 348 /*************** jtag wrapper functions *********************/
 349
 350 static void usbprog_write(int tck, int tms, int tdi)
 351 {
 352         unsigned char output_value = 0x00;
 353
 354         if (tms)
 355                 output_value |= (1 << TMS_BIT);
 356         if (tdi)
 357                 output_value |= (1 << TDI_BIT);
 358         if (tck)
 359                 output_value |= (1 << TCK_BIT);
 360
 361         usbprog_jtag_write_slice(usbprog_jtag_handle,output_value);
 362 }
 363
 364 /* (1) assert or (0) deassert reset lines */
 365 static void usbprog_reset(int trst, int srst)
 366 {
 367         LOG_DEBUG("trst: %i, srst: %i", trst, srst);
 368
 369         if (trst)
 370                 usbprog_jtag_set_bit(usbprog_jtag_handle, 5, 0);
 371         else
 372                 usbprog_jtag_set_bit(usbprog_jtag_handle, 5, 1);
 373
 374         if (srst)
 375                 usbprog_jtag_set_bit(usbprog_jtag_handle, 4, 0);
 376         else
 377                 usbprog_jtag_set_bit(usbprog_jtag_handle, 4, 1);
 378 }
 379
 380 /*************** jtag lowlevel functions ********************/
 381
 382 struct usb_bus *busses;
 383
 384 struct usbprog_jtag* usbprog_jtag_open(void)
 385 {
 386         struct usb_bus *bus;
 387         struct usb_device *dev;
 388
 389         struct usbprog_jtag *tmp;
 390
 391         tmp = (struct usbprog_jtag*)malloc(sizeof(struct usbprog_jtag));
 392
 393         usb_set_debug(10);
 394         usb_init();
 395         usb_find_busses();
 396         usb_find_devices();
 397
 398         busses = usb_get_busses();
 399
 400         /* find usbprog_jtag device in usb bus */
 401
 402         for (bus = busses; bus; bus = bus->next)
 403         {
 404                 for (dev = bus->devices; dev; dev = dev->next)
 405                 {
 406                         /* condition for sucessfully hit (too bad, I only check the vendor id)*/
 407                         if (dev->descriptor.idVendor == VID && dev->descriptor.idProduct == PID)
 408                         {
 409                                 tmp->usb_handle = usb_open(dev);
 410                                 usb_set_configuration(tmp->usb_handle, 1);
 411                                 usb_claim_interface(tmp->usb_handle, 0);
 412                                 usb_set_altinterface(tmp->usb_handle, 0);
 413                                 return tmp;
 414                         }
 415                 }
 416         }
 417         free(tmp);
 418         return 0;
 419 }
 420
 421 #if 0
 422 static void usbprog_jtag_close(struct usbprog_jtag *usbprog_jtag)
 423 {
 424         usb_close(usbprog_jtag->usb_handle);
 425         free(usbprog_jtag);
 426 }
 427 #endif
 428
 429 static unsigned char usbprog_jtag_message(struct usbprog_jtag *usbprog_jtag, char *msg, int msglen)
 430 {
 431         int res = usb_bulk_write(usbprog_jtag->usb_handle, 3, msg,msglen, 100);
 432         if ((msg[0] == 2) || (msg[0] == 1) || (msg[0] == 4) || (msg[0] == 0) || \
 433                         (msg[0] == 6) || (msg[0] == 0x0A) || (msg[0] == 9))
 434                 return 1;
 435         if (res == msglen)
 436         {
 437                 /* LOG_INFO("HALLLLOOO %i",(int)msg[0]); */
 438                 res =  usb_bulk_read(usbprog_jtag->usb_handle, 0x82, msg, 2, 100);
 439                 if (res > 0)
 440                         return (unsigned char)msg[1];
 441                 else
 442                         return -1;
 443         }
 444         else
 445                 return -1;
 446         return 0;
 447 }
 448
 449 static void usbprog_jtag_init(struct usbprog_jtag *usbprog_jtag)
 450 {
 451         usbprog_jtag_set_direction(usbprog_jtag, 0xFE);
 452 }
 453
 454 static void usbprog_jtag_write_and_read(struct usbprog_jtag *usbprog_jtag, char * buffer, int size)
 455 {
 456         char tmp[64];   /* fastes packet size for usb controller */
 457         int send_bits, bufindex = 0, fillindex = 0, i, loops;
 458
 459         char swap;
 460         /* 61 byte can be transfered (488 bit) */
 461
 462         while (size > 0)
 463         {
 464                 if (size > 488)
 465                 {
 466                         send_bits = 488;
 467                         size = size - 488;
 468                         loops = 61;
 469                 }
 470                 else
 471                 {
 472                         send_bits = size;
 473                         loops = size / 8;
 474                         loops++;
 475                         size = 0;
 476                 }
 477                 tmp[0] = WRITE_AND_READ;
 478                 tmp[1] = (char)(send_bits >> 8);        /* high */
 479                 tmp[2] = (char)(send_bits);                     /* low */
 480                 i = 0;
 481
 482                 for (i = 0; i < loops; i++)
 483                 {
 484                         tmp[3 + i] = buffer[bufindex];
 485                         bufindex++;
 486                 }
 487
 488                 if (usb_bulk_write(usbprog_jtag->usb_handle, 3, tmp, 64, 1000) == 64)
 489                 {
 490                         /* LOG_INFO("HALLLLOOO2 %i",(int)tmp[0]); */
 491                         usleep(1);
 492                         int timeout = 0;
 493                         while (usb_bulk_read(usbprog_jtag->usb_handle, 0x82, tmp, 64, 1000) < 1)
 494                         {
 495                                 timeout++;
 496                                 if (timeout > 10)
 497                                         break;
 498                         }
 499
 500                         for (i = 0; i < loops; i++)
 501                         {
 502                                 swap =  tmp[3 + i];
 503                                 buffer[fillindex++] = swap;
 504                         }
 505                 }
 506         }
 507 }
 508
 509 static void usbprog_jtag_read_tdo(struct usbprog_jtag *usbprog_jtag, char * buffer, int size)
 510 {
 511         char tmp[64];   /* fastes packet size for usb controller */
 512         int send_bits, fillindex = 0, i, loops;
 513
 514         char swap;
 515         /* 61 byte can be transfered (488 bit) */
 516
 517         while (size > 0)
 518         {
 519                 if (size > 488)
 520                 {
 521                         send_bits = 488;
 522                         size = size - 488;
 523                         loops = 61;
 524                 }
 525                 else
 526                 {
 527                         send_bits = size;
 528                         loops = size / 8;
 529                         loops++;
 530                         size = 0;
 531                 }
 532                 tmp[0] = WRITE_AND_READ;
 533                 tmp[1] = (char)(send_bits >> 8);        /* high */
 534                 tmp[2] = (char)(send_bits);                     /* low */
 535
 536                 usb_bulk_write(usbprog_jtag->usb_handle, 3, tmp, 3, 1000);
 537
 538                 /* LOG_INFO("HALLLLOOO3 %i",(int)tmp[0]); */
 539                 int timeout = 0;
 540                 usleep(1);
 541                 while (usb_bulk_read(usbprog_jtag->usb_handle, 0x82, tmp, 64, 10) < 1)
 542                 {
 543                         timeout++;
 544                         if (timeout > 10)
 545                                 break;
 546                 }
 547
 548                 for (i = 0; i < loops; i++)
 549                 {
 550                         swap = tmp[3 + i];
 551                         buffer[fillindex++] = swap;
 552                 }
 553         }
 554 }
 555
 556 static void usbprog_jtag_write_tdi(struct usbprog_jtag *usbprog_jtag, char * buffer, int size)
 557 {
 558         char tmp[64];   /* fastes packet size for usb controller */
 559         int send_bits, bufindex = 0, i, loops;
 560
 561         /* 61 byte can be transfered (488 bit) */
 562         while (size > 0)
 563         {
 564                 if (size > 488)
 565                 {
 566                         send_bits = 488;
 567                         size = size - 488;
 568                         loops = 61;
 569                 }
 570                 else
 571                 {
 572                         send_bits = size;
 573                         loops = size/8;
 574                         /* if (loops == 0) */
 575                         loops++;
 576                         size = 0;
 577                 }
 578                 tmp[0] = WRITE_TDI;
 579                 tmp[1] = (char)(send_bits >> 8);        /* high */
 580                 tmp[2] = (char)(send_bits);                     /* low */
 581                 i = 0;
 582
 583                 for (i = 0; i < loops; i++)
 584                 {
 585                         tmp[3 + i] = buffer[bufindex];
 586                         bufindex++;
 587                 }
 588                 usb_bulk_write(usbprog_jtag->usb_handle, 3, tmp, 64, 1000);
 589         }
 590 }
 591
 592 static void usbprog_jtag_write_tms(struct usbprog_jtag *usbprog_jtag, char tms_scan)
 593 {
 594         usbprog_jtag_tms_collect(tms_scan);
 595 }
 596
 597 static void usbprog_jtag_set_direction(struct usbprog_jtag *usbprog_jtag, unsigned char direction)
 598 {
 599         char tmp[2];
 600         tmp[0] = PORT_DIRECTION;
 601         tmp[1] = (char)direction;
 602         usbprog_jtag_message(usbprog_jtag, tmp, 2);
 603 }
 604
 605 static void usbprog_jtag_write_slice(struct usbprog_jtag *usbprog_jtag,unsigned char value)
 606 {
 607         char tmp[2];
 608         tmp[0] = PORT_SET;
 609         tmp[1] = (char)value;
 610         usbprog_jtag_message(usbprog_jtag, tmp, 2);
 611 }
 612
 613 #if 0
 614 static unsigned char usbprog_jtag_get_port(struct usbprog_jtag *usbprog_jtag)
 615 {
 616         char tmp[2];
 617         tmp[0] = PORT_GET;
 618         tmp[1] = 0x00;
 619         return usbprog_jtag_message(usbprog_jtag, tmp, 2);
 620 }
 621 #endif
 622
 623 static void usbprog_jtag_set_bit(struct usbprog_jtag *usbprog_jtag,int bit, int value)
 624 {
 625         char tmp[3];
 626         tmp[0] = PORT_SETBIT;
 627         tmp[1] = (char)bit;
 628         if (value == 1)
 629                 tmp[2] = 0x01;
 630         else
 631                 tmp[2] = 0x00;
 632         usbprog_jtag_message(usbprog_jtag, tmp, 3);
 633 }
 634
 635 #if 0
 636 static int usbprog_jtag_get_bit(struct usbprog_jtag *usbprog_jtag, int bit)
 637 {
 638         char tmp[2];
 639         tmp[0] = PORT_GETBIT;
 640         tmp[1] = (char)bit;
 641
 642         if (usbprog_jtag_message(usbprog_jtag, tmp, 2) > 0)
 643                 return 1;
 644         else
 645                 return 0;
 646 }
 647 #endif
 648
 649 static void usbprog_jtag_tms_collect(char tms_scan)
 650 {
 651         tms_chain[tms_chain_index] = tms_scan;
 652         tms_chain_index++;
 653 }
 654
 655 static void usbprog_jtag_tms_send(struct usbprog_jtag *usbprog_jtag)
 656 {
 657         int i;
 658         /* LOG_INFO("TMS SEND"); */
 659         if (tms_chain_index > 0)
 660         {
 661                 char tmp[tms_chain_index + 2];
 662                 tmp[0] = WRITE_TMS_CHAIN;
 663                 tmp[1] = (char)(tms_chain_index);
 664                 for (i = 0; i < tms_chain_index + 1; i++)
 665                         tmp[2 + i] = tms_chain[i];
 666                 usb_bulk_write(usbprog_jtag->usb_handle, 3, tmp, tms_chain_index + 2, 1000);
 667                 tms_chain_index = 0;
 668         }
 669 }
 670
 671 struct jtag_interface usbprog_interface = {
 672                 .name = "usbprog",
 673                 .execute_queue = &usbprog_execute_queue,
 674                 .speed = &usbprog_speed,
 675                 .init = &usbprog_init,
 676                 .quit = &usbprog_quit
 677         };