git.sur5r.net Git - openocd/blob - 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 "jtag.h"
  38
  39 #include <usb.h>
  40
  41
  42 #define VID 0x1781
  43 #define PID 0x0c63
  44
  45 /* Pins at usbprog */
  46 #define TDO_BIT                 0
  47 #define TDI_BIT                 3
  48 #define TCK_BIT                 2
  49 #define TMS_BIT                 1
  50
  51 static int usbprog_execute_queue(void);
  52 static int usbprog_speed(int speed);
  53 static int usbprog_register_commands(struct command_context_s *cmd_ctx);
  54 static int usbprog_init(void);
  55 static int usbprog_quit(void);
  56
  57 static void usbprog_end_state(tap_state_t state);
  58 static void usbprog_state_move(void);
  59 static void usbprog_path_move(pathmove_command_t *cmd);
  60 static void usbprog_runtest(int num_cycles);
  61 static void usbprog_scan(bool ir_scan, enum scan_type type, u8 *buffer, int scan_size);
  62
  63 jtag_interface_t usbprog_interface =
  64 {
  65         .name = "usbprog",
  66         .execute_queue = usbprog_execute_queue,
  67         .speed = usbprog_speed,
  68         .register_commands = usbprog_register_commands,
  69         .init = usbprog_init,
  70         .quit = usbprog_quit
  71 };
  72
  73 #define UNKOWN_COMMAND  0x00
  74 #define PORT_DIRECTION  0x01
  75 #define PORT_SET                0x02
  76 #define PORT_GET                0x03
  77 #define PORT_SETBIT             0x04
  78 #define PORT_GETBIT             0x05
  79 #define WRITE_TDI               0x06
  80 #define READ_TDO                0x07
  81 #define WRITE_AND_READ  0x08
  82 #define WRITE_TMS               0x09
  83 #define WRITE_TMS_CHAIN 0x0A
  84
  85 struct usbprog_jtag
  86 {
  87         struct usb_dev_handle* usb_handle;
  88 };
  89
  90 static struct usbprog_jtag * usbprog_jtag_handle;
  91
  92 static struct usbprog_jtag* usbprog_jtag_open(void);
  93 //static void usbprog_jtag_close(struct usbprog_jtag *usbprog_jtag);
  94 static void usbprog_jtag_init(struct usbprog_jtag *usbprog_jtag);
  95 static unsigned char usbprog_jtag_message(struct usbprog_jtag *usbprog_jtag, char *msg, int msglen);
  96
  97 static void usbprog_jtag_read_tdo(struct usbprog_jtag *usbprog_jtag, char * buffer, int size);
  98 static void usbprog_jtag_write_tdi(struct usbprog_jtag *usbprog_jtag, char * buffer, int size);
  99 static void usbprog_jtag_write_and_read(struct usbprog_jtag *usbprog_jtag, char * buffer, int size);
 100 static void usbprog_jtag_write_tms(struct usbprog_jtag *usbprog_jtag, char tms_scan);
 101
 102 static char tms_chain[64];
 103 static int tms_chain_index;
 104
 105 static void usbprog_jtag_tms_collect(char tms_scan);
 106 static void usbprog_jtag_tms_send(struct usbprog_jtag *usbprog_jtag);
 107
 108 static void usbprog_write(int tck, int tms, int tdi);
 109 static void usbprog_reset(int trst, int srst);
 110
 111 static void usbprog_jtag_set_direction(struct usbprog_jtag *usbprog_jtag, unsigned char direction);
 112 static void usbprog_jtag_write_slice(struct usbprog_jtag *usbprog_jtag,unsigned char value);
 113 //static unsigned char usbprog_jtag_get_port(struct usbprog_jtag *usbprog_jtag);
 114 static void usbprog_jtag_set_bit(struct usbprog_jtag *usbprog_jtag,int bit, int value);
 115 //static int usbprog_jtag_get_bit(struct usbprog_jtag *usbprog_jtag, int bit);
 116
 117 static int usbprog_speed(int speed)
 118 {
 119         return ERROR_OK;
 120 }
 121
 122 static int usbprog_register_commands(struct command_context_s *cmd_ctx)
 123 {
 124         return ERROR_OK;
 125 }
 126
 127 static int usbprog_execute_queue(void)
 128 {
 129         jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
 130         int scan_size;
 131         enum scan_type type;
 132         u8 *buffer;
 133
 134         while (cmd)
 135         {
 136                 switch (cmd->type)
 137                 {
 138                         case JTAG_RESET:
 139 #ifdef _DEBUG_JTAG_IO_
 140                                 LOG_DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
 141 #endif
 142                                 if (cmd->cmd.reset->trst == 1)
 143                                 {
 144                                         tap_set_state(TAP_RESET);
 145                                 }
 146                                 usbprog_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
 147                                 break;
 148                         case JTAG_RUNTEST:
 149 #ifdef _DEBUG_JTAG_IO_
 150                                 LOG_DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state);
 151 #endif
 152                                 if (cmd->cmd.runtest->end_state != TAP_INVALID)
 153                                         usbprog_end_state(cmd->cmd.runtest->end_state);
 154                                 usbprog_runtest(cmd->cmd.runtest->num_cycles);
 155                                 break;
 156                         case JTAG_STATEMOVE:
 157 #ifdef _DEBUG_JTAG_IO_
 158                                 LOG_DEBUG("statemove end in %i", cmd->cmd.statemove->end_state);
 159 #endif
 160                                 if (cmd->cmd.statemove->end_state != TAP_INVALID)
 161                                         usbprog_end_state(cmd->cmd.statemove->end_state);
 162                                 usbprog_state_move();
 163                                 break;
 164                         case JTAG_PATHMOVE:
 165 #ifdef _DEBUG_JTAG_IO_
 166                                 LOG_DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states,
 167                                         cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
 168 #endif
 169                                 usbprog_path_move(cmd->cmd.pathmove);
 170                                 break;
 171                         case JTAG_SCAN:
 172 #ifdef _DEBUG_JTAG_IO_
 173                                 LOG_DEBUG("scan end in %i", cmd->cmd.scan->end_state);
 174 #endif
 175                                 if (cmd->cmd.scan->end_state != TAP_INVALID)
 176                                         usbprog_end_state(cmd->cmd.scan->end_state);
 177                                 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
 178                                 type = jtag_scan_type(cmd->cmd.scan);
 179                                 usbprog_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
 180                                 if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
 181                                         return ERROR_JTAG_QUEUE_FAILED;
 182                                 if (buffer)
 183                                         free(buffer);
 184                                 break;
 185                         case JTAG_SLEEP:
 186 #ifdef _DEBUG_JTAG_IO_
 187                                 LOG_DEBUG("sleep %i", cmd->cmd.sleep->us);
 188 #endif
 189                                 jtag_sleep(cmd->cmd.sleep->us);
 190                                         break;
 191                         default:
 192                                 LOG_ERROR("BUG: unknown JTAG command type encountered");
 193                                 exit(-1);
 194                 }
 195
 196                 cmd = cmd->next;
 197         }
 198
 199         return ERROR_OK;
 200 }
 201
 202 static int usbprog_init(void)
 203 {
 204         usbprog_jtag_handle = usbprog_jtag_open();
 205
 206         tms_chain_index = 0;
 207         if (usbprog_jtag_handle == 0)
 208         {
 209                 LOG_ERROR("Can't find USB JTAG Interface! Please check connection and permissions.");
 210                 return ERROR_JTAG_INIT_FAILED;
 211         }
 212
 213         LOG_INFO("USB JTAG Interface ready!");
 214
 215         usbprog_jtag_init(usbprog_jtag_handle);
 216         usbprog_reset(0, 0);
 217         usbprog_write(0, 0, 0);
 218
 219         return ERROR_OK;
 220 }
 221
 222 static int usbprog_quit(void)
 223 {
 224         return ERROR_OK;
 225 }
 226
 227 /*************** jtag execute commands **********************/
 228 static void usbprog_end_state(tap_state_t state)
 229 {
 230         if (tap_is_state_stable(state))
 231                 tap_set_end_state(state);
 232         else
 233         {
 234                 LOG_ERROR("BUG: %i is not a valid end state", state);
 235                 exit(-1);
 236         }
 237 }
 238
 239 static void usbprog_state_move(void)
 240 {
 241         int i = 0, tms = 0;
 242         u8 tms_scan = tap_get_tms_path(tap_get_state(), tap_get_end_state());
 243         int tms_count = tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
 244
 245         usbprog_jtag_write_tms(usbprog_jtag_handle, (char)tms_scan);
 246         for (i = 0; i < tms_count; i++)
 247         {
 248                 tms = (tms_scan >> i) & 1;
 249         }
 250
 251         tap_set_state(tap_get_end_state());
 252 }
 253
 254 static void usbprog_path_move(pathmove_command_t *cmd)
 255 {
 256         int num_states = cmd->num_states;
 257         int state_count;
 258
 259         /* There may be queued transitions, and before following a specified
 260            path, we must flush those queued transitions */
 261         usbprog_jtag_tms_send(usbprog_jtag_handle);
 262
 263         state_count = 0;
 264         while (num_states)
 265         {
 266                 if (tap_state_transition(tap_get_state(), false) == cmd->path[state_count])
 267                 {
 268                         /* LOG_INFO("1"); */
 269                         usbprog_write(0, 0, 0);
 270                         usbprog_write(1, 0, 0);
 271                 }
 272                 else if (tap_state_transition(tap_get_state(), true) == cmd->path[state_count])
 273                 {
 274                         /* LOG_INFO("2"); */
 275                         usbprog_write(0, 1, 0);
 276                         usbprog_write(1, 1, 0);
 277                 }
 278                 else
 279                 {
 280                         LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(tap_get_state()), tap_state_name(cmd->path[state_count]));
 281                         exit(-1);
 282                 }
 283
 284                 tap_set_state(cmd->path[state_count]);
 285                 state_count++;
 286                 num_states--;
 287         }
 288
 289         tap_set_end_state(tap_get_state());
 290 }
 291
 292 static void usbprog_runtest(int num_cycles)
 293 {
 294         int i;
 295
 296         /* only do a state_move when we're not already in IDLE */
 297         if (tap_get_state() != TAP_IDLE)
 298         {
 299                 usbprog_end_state(TAP_IDLE);
 300                 usbprog_state_move();
 301         }
 302
 303         /* execute num_cycles */
 304         if (num_cycles > 0)
 305         {
 306                 usbprog_jtag_tms_send(usbprog_jtag_handle);
 307                 usbprog_write(0, 0, 0);
 308         }
 309         else
 310         {
 311                 usbprog_jtag_tms_send(usbprog_jtag_handle);
 312                 /* LOG_INFO("NUM CYCLES %i",num_cycles); */
 313         }
 314
 315         for (i = 0; i < num_cycles; i++)
 316         {
 317                 usbprog_write(1, 0, 0);
 318                 usbprog_write(0, 0, 0);
 319         }
 320
 321 #ifdef _DEBUG_JTAG_IO_
 322         LOG_DEBUG("runtest: cur_state %s end_state %s", tap_state_name(tap_get_state()), tap_state_name(tap_get_end_state()));
 323 #endif
 324
 325         /* finish in end_state */
 326         /*
 327         usbprog_end_state(saved_end_state);
 328         if (tap_get_state() != tap_get_end_state())
 329                 usbprog_state_move();
 330         */
 331 }
 332
 333 static void usbprog_scan(bool ir_scan, enum scan_type type, u8 *buffer, int scan_size)
 334 {
 335         tap_state_t saved_end_state = tap_get_end_state();
 336
 337         if (ir_scan)
 338                 usbprog_end_state(TAP_IRSHIFT);
 339         else
 340                 usbprog_end_state(TAP_DRSHIFT);
 341
 342         /* Only move if we're not already there */
 343         if (tap_get_state() != tap_get_end_state())
 344                 usbprog_state_move();
 345
 346         usbprog_end_state(saved_end_state);
 347
 348         usbprog_jtag_tms_send(usbprog_jtag_handle);
 349
 350         void (*f)(struct usbprog_jtag *usbprog_jtag, char * buffer, int size);
 351         switch (type) {
 352         case SCAN_OUT: f = &usbprog_jtag_write_tdi; break;
 353         case SCAN_IN: f = &usbprog_jtag_read_tdo; break;
 354         case SCAN_IO: f = &usbprog_jtag_write_and_read; break;
 355         default:
 356                 LOG_ERROR("unknown scan type: %i", type);
 357                 exit(-1);
 358         }
 359         f(usbprog_jtag_handle, (char *)buffer, scan_size);
 360
 361         /* The adapter does the transition to PAUSE internally */
 362         if (ir_scan)
 363                 tap_set_state(TAP_IRPAUSE);
 364         else
 365                 tap_set_state(TAP_DRPAUSE);
 366
 367         if (tap_get_state() != tap_get_end_state())
 368                 usbprog_state_move();
 369 }
 370
 371 /*************** jtag wrapper functions *********************/
 372
 373 static void usbprog_write(int tck, int tms, int tdi)
 374 {
 375         unsigned char output_value=0x00;
 376
 377         if (tms)
 378                 output_value |= (1<<TMS_BIT);
 379         if (tdi)
 380                 output_value |= (1<<TDI_BIT);
 381         if (tck)
 382                 output_value |= (1<<TCK_BIT);
 383
 384         usbprog_jtag_write_slice(usbprog_jtag_handle,output_value);
 385 }
 386
 387 /* (1) assert or (0) deassert reset lines */
 388 static void usbprog_reset(int trst, int srst)
 389 {
 390         LOG_DEBUG("trst: %i, srst: %i", trst, srst);
 391
 392         if (trst)
 393                 usbprog_jtag_set_bit(usbprog_jtag_handle, 5, 0);
 394         else
 395                 usbprog_jtag_set_bit(usbprog_jtag_handle, 5, 1);
 396
 397         if (srst)
 398                 usbprog_jtag_set_bit(usbprog_jtag_handle, 4, 0);
 399         else
 400                 usbprog_jtag_set_bit(usbprog_jtag_handle, 4, 1);
 401 }
 402
 403 /*************** jtag lowlevel functions ********************/
 404
 405 struct usb_bus *busses;
 406
 407 struct usbprog_jtag* usbprog_jtag_open(void)
 408 {
 409         struct usb_bus *bus;
 410         struct usb_device *dev;
 411
 412         struct usbprog_jtag *tmp;
 413
 414         tmp = (struct usbprog_jtag*)malloc(sizeof(struct usbprog_jtag));
 415
 416         usb_set_debug(10);
 417         usb_init();
 418         usb_find_busses();
 419         usb_find_devices();
 420
 421         busses = usb_get_busses();
 422
 423         /* find usbprog_jtag device in usb bus */
 424
 425         for (bus = busses; bus; bus = bus->next)
 426         {
 427                 for (dev = bus->devices; dev; dev = dev->next)
 428                 {
 429                         /* condition for sucessfully hit (too bad, I only check the vendor id)*/
 430                         if (dev->descriptor.idVendor == VID && dev->descriptor.idProduct == PID)
 431                         {
 432                                 tmp->usb_handle = usb_open(dev);
 433                                 usb_set_configuration(tmp->usb_handle, 1);
 434                                 usb_claim_interface(tmp->usb_handle, 0);
 435                                 usb_set_altinterface(tmp->usb_handle, 0);
 436                                 return tmp;
 437                         }
 438                 }
 439         }
 440         return 0;
 441 }
 442
 443 #if 0
 444 static void usbprog_jtag_close(struct usbprog_jtag *usbprog_jtag)
 445 {
 446         usb_close(usbprog_jtag->usb_handle);
 447         free(usbprog_jtag);
 448 }
 449 #endif
 450
 451 static unsigned char usbprog_jtag_message(struct usbprog_jtag *usbprog_jtag, char *msg, int msglen)
 452 {
 453         int res = usb_bulk_write(usbprog_jtag->usb_handle, 3, msg,msglen, 100);
 454         if ((msg[0] == 2) || (msg[0] == 1) || (msg[0] == 4) || (msg[0] == 0) || \
 455                         (msg[0] == 6) || (msg[0] == 0x0A) || (msg[0] == 9))
 456                 return 1;
 457         if (res == msglen)
 458         {
 459                 /* LOG_INFO("HALLLLOOO %i",(int)msg[0]); */
 460                 res =  usb_bulk_read(usbprog_jtag->usb_handle, 0x82, msg, 2, 100);
 461                 if (res > 0)
 462                         return (unsigned char)msg[1];
 463                 else
 464                         return -1;
 465         }
 466         else
 467                 return -1;
 468         return 0;
 469 }
 470
 471 static void usbprog_jtag_init(struct usbprog_jtag *usbprog_jtag)
 472 {
 473         usbprog_jtag_set_direction(usbprog_jtag, 0xFE);
 474 }
 475
 476 static void usbprog_jtag_write_and_read(struct usbprog_jtag *usbprog_jtag, char * buffer, int size)
 477 {
 478         char tmp[64];   /* fastes packet size for usb controller */
 479         int send_bits, bufindex = 0, fillindex = 0, i, loops;
 480
 481         char swap;
 482         /* 61 byte can be transfered (488 bit) */
 483
 484         while (size > 0)
 485         {
 486                 if (size > 488)
 487                 {
 488                         send_bits = 488;
 489                         size = size - 488;
 490                         loops = 61;
 491                 }
 492                 else
 493                 {
 494                         send_bits = size;
 495                         loops = size / 8;
 496                         loops++;
 497                         size = 0;
 498                 }
 499                 tmp[0] = WRITE_AND_READ;
 500                 tmp[1] = (char)(send_bits >> 8);        /* high */
 501                 tmp[2] = (char)(send_bits);                     /* low */
 502                 i = 0;
 503
 504                 for (i = 0; i < loops; i++)
 505                 {
 506                         tmp[3 + i] = buffer[bufindex];
 507                         bufindex++;
 508                 }
 509
 510                 if (usb_bulk_write(usbprog_jtag->usb_handle, 3, tmp, 64, 1000) == 64)
 511                 {
 512                         /* LOG_INFO("HALLLLOOO2 %i",(int)tmp[0]); */
 513                         usleep(1);
 514                         int timeout = 0;
 515                         while (usb_bulk_read(usbprog_jtag->usb_handle, 0x82, tmp, 64, 1000) < 1)
 516                         {
 517                                 timeout++;
 518                                 if (timeout > 10)
 519                                         break;
 520                         }
 521
 522                         for (i = 0; i < loops; i++)
 523                         {
 524                                 swap =  tmp[3 + i];
 525                                 buffer[fillindex++] = swap;
 526                         }
 527                 }
 528         }
 529 }
 530
 531 static void usbprog_jtag_read_tdo(struct usbprog_jtag *usbprog_jtag, char * buffer, int size)
 532 {
 533         char tmp[64];   /* fastes packet size for usb controller */
 534         int send_bits, fillindex = 0, i, loops;
 535
 536         char swap;
 537         /* 61 byte can be transfered (488 bit) */
 538
 539         while (size > 0)
 540         {
 541                 if (size > 488)
 542                 {
 543                         send_bits = 488;
 544                         size = size - 488;
 545                         loops = 61;
 546                 }
 547                 else
 548                 {
 549                         send_bits = size;
 550                         loops = size / 8;
 551                         loops++;
 552                         size = 0;
 553                 }
 554                 tmp[0] = WRITE_AND_READ;
 555                 tmp[1] = (char)(send_bits >> 8);        /* high */
 556                 tmp[2] = (char)(send_bits);                     /* low */
 557
 558                 usb_bulk_write(usbprog_jtag->usb_handle, 3, tmp, 3, 1000);
 559
 560                 /* LOG_INFO("HALLLLOOO3 %i",(int)tmp[0]); */
 561                 int timeout = 0;
 562                 usleep(1);
 563                 while (usb_bulk_read(usbprog_jtag->usb_handle, 0x82, tmp, 64, 10) < 1)
 564                 {
 565                         timeout++;
 566                         if (timeout > 10)
 567                                 break;
 568                 }
 569
 570                 for (i = 0; i < loops; i++)
 571                 {
 572                         swap = tmp[3 + i];
 573                         buffer[fillindex++] = swap;
 574                 }
 575         }
 576 }
 577
 578 static void usbprog_jtag_write_tdi(struct usbprog_jtag *usbprog_jtag, char * buffer, int size)
 579 {
 580         char tmp[64];   /* fastes packet size for usb controller */
 581         int send_bits, bufindex = 0, i, loops;
 582
 583         /* 61 byte can be transfered (488 bit) */
 584         while (size > 0)
 585         {
 586                 if (size > 488)
 587                 {
 588                         send_bits = 488;
 589                         size = size - 488;
 590                         loops = 61;
 591                 }
 592                 else
 593                 {
 594                         send_bits = size;
 595                         loops = size/8;
 596                         /* if(loops==0) */
 597                         loops++;
 598                         size = 0;
 599                 }
 600                 tmp[0] = WRITE_TDI;
 601                 tmp[1] = (char)(send_bits >> 8);        /* high */
 602                 tmp[2] = (char)(send_bits);                     /* low */
 603                 i = 0;
 604
 605                 for (i = 0; i < loops; i++)
 606                 {
 607                         tmp[3 + i] = buffer[bufindex];
 608                         bufindex++;
 609                 }
 610                 usb_bulk_write(usbprog_jtag->usb_handle, 3, tmp, 64, 1000);
 611         }
 612 }
 613
 614 static void usbprog_jtag_write_tms(struct usbprog_jtag *usbprog_jtag, char tms_scan)
 615 {
 616         usbprog_jtag_tms_collect(tms_scan);
 617 }
 618
 619 static void usbprog_jtag_set_direction(struct usbprog_jtag *usbprog_jtag, unsigned char direction)
 620 {
 621         char tmp[2];
 622         tmp[0] = PORT_DIRECTION;
 623         tmp[1] = (char)direction;
 624         usbprog_jtag_message(usbprog_jtag, tmp, 2);
 625 }
 626
 627 static void usbprog_jtag_write_slice(struct usbprog_jtag *usbprog_jtag,unsigned char value)
 628 {
 629         char tmp[2];
 630         tmp[0] = PORT_SET;
 631         tmp[1] = (char)value;
 632         usbprog_jtag_message(usbprog_jtag, tmp, 2);
 633 }
 634
 635 #if 0
 636 static unsigned char usbprog_jtag_get_port(struct usbprog_jtag *usbprog_jtag)
 637 {
 638         char tmp[2];
 639         tmp[0] = PORT_GET;
 640         tmp[1] = 0x00;
 641         return usbprog_jtag_message(usbprog_jtag, tmp, 2);
 642 }
 643 #endif
 644
 645 static void usbprog_jtag_set_bit(struct usbprog_jtag *usbprog_jtag,int bit, int value)
 646 {
 647         char tmp[3];
 648         tmp[0] = PORT_SETBIT;
 649         tmp[1] = (char)bit;
 650         if (value == 1)
 651                 tmp[2] = 0x01;
 652         else
 653                 tmp[2] = 0x00;
 654         usbprog_jtag_message(usbprog_jtag, tmp, 3);
 655 }
 656
 657 #if 0
 658 static int usbprog_jtag_get_bit(struct usbprog_jtag *usbprog_jtag, int bit)
 659 {
 660         char tmp[2];
 661         tmp[0] = PORT_GETBIT;
 662         tmp[1] = (char)bit;
 663
 664         if (usbprog_jtag_message(usbprog_jtag, tmp, 2) > 0)
 665                 return 1;
 666         else
 667                 return 0;
 668 }
 669 #endif
 670
 671 static void usbprog_jtag_tms_collect(char tms_scan)
 672 {
 673         tms_chain[tms_chain_index] = tms_scan;
 674         tms_chain_index++;
 675 }
 676
 677 static void usbprog_jtag_tms_send(struct usbprog_jtag *usbprog_jtag)
 678 {
 679         int i;
 680         /* LOG_INFO("TMS SEND"); */
 681         if (tms_chain_index > 0)
 682         {
 683                 char tmp[tms_chain_index + 2];
 684                 tmp[0] = WRITE_TMS_CHAIN;
 685                 tmp[1] = (char)(tms_chain_index);
 686                 for (i = 0; i < tms_chain_index + 1; i++)
 687                         tmp[2 + i] = tms_chain[i];
 688                 usb_bulk_write(usbprog_jtag->usb_handle, 3, tmp, tms_chain_index + 2, 1000);
 689                 tms_chain_index = 0;
 690         }
 691 }