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   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_END_STATE:
 139 #ifdef _DEBUG_JTAG_IO_
 140                                 LOG_DEBUG("end_state: %i", cmd->cmd.end_state->end_state);
 141 #endif
 142                                 if (cmd->cmd.end_state->end_state != TAP_INVALID)
 143                                         usbprog_end_state(cmd->cmd.end_state->end_state);
 144                                 break;
 145                         case JTAG_RESET:
 146 #ifdef _DEBUG_JTAG_IO_
 147                                 LOG_DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
 148 #endif
 149                                 if (cmd->cmd.reset->trst == 1)
 150                                 {
 151                                         tap_set_state(TAP_RESET);
 152                                 }
 153                                 usbprog_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
 154                                 break;
 155                         case JTAG_RUNTEST:
 156 #ifdef _DEBUG_JTAG_IO_
 157                                 LOG_DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state);
 158 #endif
 159                                 if (cmd->cmd.runtest->end_state != TAP_INVALID)
 160                                         usbprog_end_state(cmd->cmd.runtest->end_state);
 161                                 usbprog_runtest(cmd->cmd.runtest->num_cycles);
 162                                 break;
 163                         case JTAG_STATEMOVE:
 164 #ifdef _DEBUG_JTAG_IO_
 165                                 LOG_DEBUG("statemove end in %i", cmd->cmd.statemove->end_state);
 166 #endif
 167                                 if (cmd->cmd.statemove->end_state != TAP_INVALID)
 168                                         usbprog_end_state(cmd->cmd.statemove->end_state);
 169                                 usbprog_state_move();
 170                                 break;
 171                         case JTAG_PATHMOVE:
 172 #ifdef _DEBUG_JTAG_IO_
 173                                 LOG_DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states,
 174                                         cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
 175 #endif
 176                                 usbprog_path_move(cmd->cmd.pathmove);
 177                                 break;
 178                         case JTAG_SCAN:
 179 #ifdef _DEBUG_JTAG_IO_
 180                                 LOG_DEBUG("scan end in %i", cmd->cmd.scan->end_state);
 181 #endif
 182                                 if (cmd->cmd.scan->end_state != TAP_INVALID)
 183                                         usbprog_end_state(cmd->cmd.scan->end_state);
 184                                 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
 185                                 type = jtag_scan_type(cmd->cmd.scan);
 186                                 usbprog_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
 187                                 if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
 188                                         return ERROR_JTAG_QUEUE_FAILED;
 189                                 if (buffer)
 190                                         free(buffer);
 191                                 break;
 192                         case JTAG_SLEEP:
 193 #ifdef _DEBUG_JTAG_IO_
 194                                 LOG_DEBUG("sleep %i", cmd->cmd.sleep->us);
 195 #endif
 196                                 jtag_sleep(cmd->cmd.sleep->us);
 197                                         break;
 198                         default:
 199                                 LOG_ERROR("BUG: unknown JTAG command type encountered");
 200                                 exit(-1);
 201                 }
 202
 203                 cmd = cmd->next;
 204         }
 205
 206         return ERROR_OK;
 207 }
 208
 209 static int usbprog_init(void)
 210 {
 211         usbprog_jtag_handle = usbprog_jtag_open();
 212
 213         tms_chain_index = 0;
 214         if (usbprog_jtag_handle == 0)
 215         {
 216                 LOG_ERROR("Can't find USB JTAG Interface! Please check connection and permissions.");
 217                 return ERROR_JTAG_INIT_FAILED;
 218         }
 219
 220         LOG_INFO("USB JTAG Interface ready!");
 221
 222         usbprog_jtag_init(usbprog_jtag_handle);
 223         usbprog_reset(0, 0);
 224         usbprog_write(0, 0, 0);
 225
 226         return ERROR_OK;
 227 }
 228
 229 static int usbprog_quit(void)
 230 {
 231         return ERROR_OK;
 232 }
 233
 234 /*************** jtag execute commands **********************/
 235 static void usbprog_end_state(tap_state_t state)
 236 {
 237         if (tap_is_state_stable(state))
 238                 tap_set_end_state(state);
 239         else
 240         {
 241                 LOG_ERROR("BUG: %i is not a valid end state", state);
 242                 exit(-1);
 243         }
 244 }
 245
 246 static void usbprog_state_move(void)
 247 {
 248         int i = 0, tms = 0;
 249         u8 tms_scan = tap_get_tms_path(tap_get_state(), tap_get_end_state());
 250
 251         usbprog_jtag_write_tms(usbprog_jtag_handle, (char)tms_scan);
 252         for (i = 0; i < 7; i++)
 253         {
 254                 tms = (tms_scan >> i) & 1;
 255         }
 256
 257         tap_set_state(tap_get_end_state());
 258 }
 259
 260 static void usbprog_path_move(pathmove_command_t *cmd)
 261 {
 262         int num_states = cmd->num_states;
 263         int state_count;
 264
 265         /* There may be queued transitions, and before following a specified
 266            path, we must flush those queued transitions */
 267         usbprog_jtag_tms_send(usbprog_jtag_handle);
 268
 269         state_count = 0;
 270         while (num_states)
 271         {
 272                 if (tap_state_transition(tap_get_state(), false) == cmd->path[state_count])
 273                 {
 274                         /* LOG_INFO("1"); */
 275                         usbprog_write(0, 0, 0);
 276                         usbprog_write(1, 0, 0);
 277                 }
 278                 else if (tap_state_transition(tap_get_state(), true) == cmd->path[state_count])
 279                 {
 280                         /* LOG_INFO("2"); */
 281                         usbprog_write(0, 1, 0);
 282                         usbprog_write(1, 1, 0);
 283                 }
 284                 else
 285                 {
 286                         LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(tap_get_state()), tap_state_name(cmd->path[state_count]));
 287                         exit(-1);
 288                 }
 289
 290                 tap_set_state(cmd->path[state_count]);
 291                 state_count++;
 292                 num_states--;
 293         }
 294
 295         tap_set_end_state(tap_get_state());
 296 }
 297
 298 static void usbprog_runtest(int num_cycles)
 299 {
 300         int i;
 301
 302         /* only do a state_move when we're not already in IDLE */
 303         if (tap_get_state() != TAP_IDLE)
 304         {
 305                 usbprog_end_state(TAP_IDLE);
 306                 usbprog_state_move();
 307         }
 308
 309         /* execute num_cycles */
 310         if (num_cycles > 0)
 311         {
 312                 usbprog_jtag_tms_send(usbprog_jtag_handle);
 313                 usbprog_write(0, 0, 0);
 314         }
 315         else
 316         {
 317                 usbprog_jtag_tms_send(usbprog_jtag_handle);
 318                 /* LOG_INFO("NUM CYCLES %i",num_cycles); */
 319         }
 320
 321         for (i = 0; i < num_cycles; i++)
 322         {
 323                 usbprog_write(1, 0, 0);
 324                 usbprog_write(0, 0, 0);
 325         }
 326
 327 #ifdef _DEBUG_JTAG_IO_
 328         LOG_DEBUG("runtest: cur_state %s end_state %s", tap_state_name(tap_get_state()), tap_state_name(tap_get_end_state()));
 329 #endif
 330
 331         /* finish in end_state */
 332         /*
 333         usbprog_end_state(saved_end_state);
 334         if (tap_get_state() != tap_get_end_state())
 335                 usbprog_state_move();
 336         */
 337 }
 338
 339 static void usbprog_scan(bool ir_scan, enum scan_type type, u8 *buffer, int scan_size)
 340 {
 341         tap_state_t saved_end_state = tap_get_end_state();
 342
 343         if (ir_scan)
 344                 usbprog_end_state(TAP_IRSHIFT);
 345         else
 346                 usbprog_end_state(TAP_DRSHIFT);
 347
 348         /* Only move if we're not already there */
 349         if (tap_get_state() != tap_get_end_state())
 350                 usbprog_state_move();
 351
 352         usbprog_end_state(saved_end_state);
 353
 354         usbprog_jtag_tms_send(usbprog_jtag_handle);
 355
 356         void (*f)(struct usbprog_jtag *usbprog_jtag, char * buffer, int size);
 357         switch (type) {
 358         case SCAN_OUT: f = &usbprog_jtag_write_tdi; break;
 359         case SCAN_IN: f = &usbprog_jtag_read_tdo; break;
 360         case SCAN_IO: f = &usbprog_jtag_write_and_read; break;
 361         default:
 362                 LOG_ERROR("unknown scan type: %i", type);
 363                 exit(-1);
 364         }
 365         f(usbprog_jtag_handle, (char *)buffer, scan_size);
 366
 367         /* The adapter does the transition to PAUSE internally */
 368         if (ir_scan)
 369                 tap_set_state(TAP_IRPAUSE);
 370         else
 371                 tap_set_state(TAP_DRPAUSE);
 372
 373         if (tap_get_state() != tap_get_end_state())
 374                 usbprog_state_move();
 375 }
 376
 377 /*************** jtag wrapper functions *********************/
 378
 379 static void usbprog_write(int tck, int tms, int tdi)
 380 {
 381         unsigned char output_value=0x00;
 382
 383         if (tms)
 384                 output_value |= (1<<TMS_BIT);
 385         if (tdi)
 386                 output_value |= (1<<TDI_BIT);
 387         if (tck)
 388                 output_value |= (1<<TCK_BIT);
 389
 390         usbprog_jtag_write_slice(usbprog_jtag_handle,output_value);
 391 }
 392
 393 /* (1) assert or (0) deassert reset lines */
 394 static void usbprog_reset(int trst, int srst)
 395 {
 396         LOG_DEBUG("trst: %i, srst: %i", trst, srst);
 397
 398         if (trst)
 399                 usbprog_jtag_set_bit(usbprog_jtag_handle, 5, 0);
 400         else
 401                 usbprog_jtag_set_bit(usbprog_jtag_handle, 5, 1);
 402
 403         if (srst)
 404                 usbprog_jtag_set_bit(usbprog_jtag_handle, 4, 0);
 405         else
 406                 usbprog_jtag_set_bit(usbprog_jtag_handle, 4, 1);
 407 }
 408
 409 /*************** jtag lowlevel functions ********************/
 410
 411 struct usb_bus *busses;
 412
 413 struct usbprog_jtag* usbprog_jtag_open(void)
 414 {
 415         struct usb_bus *bus;
 416         struct usb_device *dev;
 417
 418         struct usbprog_jtag *tmp;
 419
 420         tmp = (struct usbprog_jtag*)malloc(sizeof(struct usbprog_jtag));
 421
 422         usb_set_debug(10);
 423         usb_init();
 424         usb_find_busses();
 425         usb_find_devices();
 426
 427         busses = usb_get_busses();
 428
 429         /* find usbprog_jtag device in usb bus */
 430
 431         for (bus = busses; bus; bus = bus->next)
 432         {
 433                 for (dev = bus->devices; dev; dev = dev->next)
 434                 {
 435                         /* condition for sucessfully hit (too bad, I only check the vendor id)*/
 436                         if (dev->descriptor.idVendor == VID && dev->descriptor.idProduct == PID)
 437                         {
 438                                 tmp->usb_handle = usb_open(dev);
 439                                 usb_set_configuration(tmp->usb_handle, 1);
 440                                 usb_claim_interface(tmp->usb_handle, 0);
 441                                 usb_set_altinterface(tmp->usb_handle, 0);
 442                                 return tmp;
 443                         }
 444                 }
 445         }
 446         return 0;
 447 }
 448
 449 #if 0
 450 static void usbprog_jtag_close(struct usbprog_jtag *usbprog_jtag)
 451 {
 452         usb_close(usbprog_jtag->usb_handle);
 453         free(usbprog_jtag);
 454 }
 455 #endif
 456
 457 static unsigned char usbprog_jtag_message(struct usbprog_jtag *usbprog_jtag, char *msg, int msglen)
 458 {
 459         int res = usb_bulk_write(usbprog_jtag->usb_handle, 3, msg,msglen, 100);
 460         if ((msg[0] == 2) || (msg[0] == 1) || (msg[0] == 4) || (msg[0] == 0) || \
 461                         (msg[0] == 6) || (msg[0] == 0x0A) || (msg[0] == 9))
 462                 return 1;
 463         if (res == msglen)
 464         {
 465                 /* LOG_INFO("HALLLLOOO %i",(int)msg[0]); */
 466                 res =  usb_bulk_read(usbprog_jtag->usb_handle, 0x82, msg, 2, 100);
 467                 if (res > 0)
 468                         return (unsigned char)msg[1];
 469                 else
 470                         return -1;
 471         }
 472         else
 473                 return -1;
 474         return 0;
 475 }
 476
 477 static void usbprog_jtag_init(struct usbprog_jtag *usbprog_jtag)
 478 {
 479         usbprog_jtag_set_direction(usbprog_jtag, 0xFE);
 480 }
 481
 482 static void usbprog_jtag_write_and_read(struct usbprog_jtag *usbprog_jtag, char * buffer, int size)
 483 {
 484         char tmp[64];   /* fastes packet size for usb controller */
 485         int send_bits, bufindex = 0, fillindex = 0, i, loops;
 486
 487         char swap;
 488         /* 61 byte can be transfered (488 bit) */
 489
 490         while (size > 0)
 491         {
 492                 if (size > 488)
 493                 {
 494                         send_bits = 488;
 495                         size = size - 488;
 496                         loops = 61;
 497                 }
 498                 else
 499                 {
 500                         send_bits = size;
 501                         loops = size / 8;
 502                         loops++;
 503                         size = 0;
 504                 }
 505                 tmp[0] = WRITE_AND_READ;
 506                 tmp[1] = (char)(send_bits >> 8);        /* high */
 507                 tmp[2] = (char)(send_bits);                     /* low */
 508                 i = 0;
 509
 510                 for (i = 0; i < loops; i++)
 511                 {
 512                         tmp[3 + i] = buffer[bufindex];
 513                         bufindex++;
 514                 }
 515
 516                 if (usb_bulk_write(usbprog_jtag->usb_handle, 3, tmp, 64, 1000) == 64)
 517                 {
 518                         /* LOG_INFO("HALLLLOOO2 %i",(int)tmp[0]); */
 519                         usleep(1);
 520                         int timeout = 0;
 521                         while (usb_bulk_read(usbprog_jtag->usb_handle, 0x82, tmp, 64, 1000) < 1)
 522                         {
 523                                 timeout++;
 524                                 if (timeout > 10)
 525                                         break;
 526                         }
 527
 528                         for (i = 0; i < loops; i++)
 529                         {
 530                                 swap =  tmp[3 + i];
 531                                 buffer[fillindex++] = swap;
 532                         }
 533                 }
 534         }
 535 }
 536
 537 static void usbprog_jtag_read_tdo(struct usbprog_jtag *usbprog_jtag, char * buffer, int size)
 538 {
 539         char tmp[64];   /* fastes packet size for usb controller */
 540         int send_bits, fillindex = 0, i, loops;
 541
 542         char swap;
 543         /* 61 byte can be transfered (488 bit) */
 544
 545         while (size > 0)
 546         {
 547                 if (size > 488)
 548                 {
 549                         send_bits = 488;
 550                         size = size - 488;
 551                         loops = 61;
 552                 }
 553                 else
 554                 {
 555                         send_bits = size;
 556                         loops = size / 8;
 557                         loops++;
 558                         size = 0;
 559                 }
 560                 tmp[0] = WRITE_AND_READ;
 561                 tmp[1] = (char)(send_bits >> 8);        /* high */
 562                 tmp[2] = (char)(send_bits);                     /* low */
 563
 564                 usb_bulk_write(usbprog_jtag->usb_handle, 3, tmp, 3, 1000);
 565
 566                 /* LOG_INFO("HALLLLOOO3 %i",(int)tmp[0]); */
 567                 int timeout = 0;
 568                 usleep(1);
 569                 while (usb_bulk_read(usbprog_jtag->usb_handle, 0x82, tmp, 64, 10) < 1)
 570                 {
 571                         timeout++;
 572                         if (timeout > 10)
 573                                 break;
 574                 }
 575
 576                 for (i = 0; i < loops; i++)
 577                 {
 578                         swap = tmp[3 + i];
 579                         buffer[fillindex++] = swap;
 580                 }
 581         }
 582 }
 583
 584 static void usbprog_jtag_write_tdi(struct usbprog_jtag *usbprog_jtag, char * buffer, int size)
 585 {
 586         char tmp[64];   /* fastes packet size for usb controller */
 587         int send_bits, bufindex = 0, i, loops;
 588
 589         /* 61 byte can be transfered (488 bit) */
 590         while (size > 0)
 591         {
 592                 if (size > 488)
 593                 {
 594                         send_bits = 488;
 595                         size = size - 488;
 596                         loops = 61;
 597                 }
 598                 else
 599                 {
 600                         send_bits = size;
 601                         loops = size/8;
 602                         /* if(loops==0) */
 603                         loops++;
 604                         size = 0;
 605                 }
 606                 tmp[0] = WRITE_TDI;
 607                 tmp[1] = (char)(send_bits >> 8);        /* high */
 608                 tmp[2] = (char)(send_bits);                     /* low */
 609                 i = 0;
 610
 611                 for (i = 0; i < loops; i++)
 612                 {
 613                         tmp[3 + i] = buffer[bufindex];
 614                         bufindex++;
 615                 }
 616                 usb_bulk_write(usbprog_jtag->usb_handle, 3, tmp, 64, 1000);
 617         }
 618 }
 619
 620 static void usbprog_jtag_write_tms(struct usbprog_jtag *usbprog_jtag, char tms_scan)
 621 {
 622         usbprog_jtag_tms_collect(tms_scan);
 623 }
 624
 625 static void usbprog_jtag_set_direction(struct usbprog_jtag *usbprog_jtag, unsigned char direction)
 626 {
 627         char tmp[2];
 628         tmp[0] = PORT_DIRECTION;
 629         tmp[1] = (char)direction;
 630         usbprog_jtag_message(usbprog_jtag, tmp, 2);
 631 }
 632
 633 static void usbprog_jtag_write_slice(struct usbprog_jtag *usbprog_jtag,unsigned char value)
 634 {
 635         char tmp[2];
 636         tmp[0] = PORT_SET;
 637         tmp[1] = (char)value;
 638         usbprog_jtag_message(usbprog_jtag, tmp, 2);
 639 }
 640
 641 #if 0
 642 static unsigned char usbprog_jtag_get_port(struct usbprog_jtag *usbprog_jtag)
 643 {
 644         char tmp[2];
 645         tmp[0] = PORT_GET;
 646         tmp[1] = 0x00;
 647         return usbprog_jtag_message(usbprog_jtag, tmp, 2);
 648 }
 649 #endif
 650
 651 static void usbprog_jtag_set_bit(struct usbprog_jtag *usbprog_jtag,int bit, int value)
 652 {
 653         char tmp[3];
 654         tmp[0] = PORT_SETBIT;
 655         tmp[1] = (char)bit;
 656         if (value == 1)
 657                 tmp[2] = 0x01;
 658         else
 659                 tmp[2] = 0x00;
 660         usbprog_jtag_message(usbprog_jtag, tmp, 3);
 661 }
 662
 663 #if 0
 664 static int usbprog_jtag_get_bit(struct usbprog_jtag *usbprog_jtag, int bit)
 665 {
 666         char tmp[2];
 667         tmp[0] = PORT_GETBIT;
 668         tmp[1] = (char)bit;
 669
 670         if (usbprog_jtag_message(usbprog_jtag, tmp, 2) > 0)
 671                 return 1;
 672         else
 673                 return 0;
 674 }
 675 #endif
 676
 677 static void usbprog_jtag_tms_collect(char tms_scan)
 678 {
 679         tms_chain[tms_chain_index] = tms_scan;
 680         tms_chain_index++;
 681 }
 682
 683 static void usbprog_jtag_tms_send(struct usbprog_jtag *usbprog_jtag)
 684 {
 685         int i;
 686         /* LOG_INFO("TMS SEND"); */
 687         if (tms_chain_index > 0)
 688         {
 689                 char tmp[tms_chain_index + 2];
 690                 tmp[0] = WRITE_TMS_CHAIN;
 691                 tmp[1] = (char)(tms_chain_index);
 692                 for (i = 0; i < tms_chain_index + 1; i++)
 693                         tmp[2 + i] = tms_chain[i];
 694                 usb_bulk_write(usbprog_jtag->usb_handle, 3, tmp, tms_chain_index + 2, 1000);
 695                 tms_chain_index = 0;
 696         }
 697 }