git.sur5r.net Git - openocd/blob - src/jtag/gw16012.c

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.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 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include "replacements.h"
  25
  26 #include "jtag.h"
  27
  28 #if 1
  29 #define _DEBUG_GW16012_IO_
  30 #endif
  31
  32 /* system includes */
  33
  34 /* system includes */
  35 // -ino: 060521-1036
  36 #ifdef __FreeBSD__
  37
  38 #include <sys/types.h>
  39 #include <machine/sysarch.h>
  40 #include <machine/cpufunc.h>
  41 #define ioperm(startport,length,enable)\
  42   i386_set_ioperm((startport), (length), (enable))
  43
  44 #else
  45
  46 #ifndef _WIN32
  47 #include <sys/io.h>
  48 #else
  49 #include "errno.h"
  50 #endif /* _WIN32 */
  51
  52 #endif /* __FreeBSD__ */
  53
  54 #include <string.h>
  55 #include <stdlib.h>
  56
  57 #include <sys/time.h>
  58 #include <time.h>
  59
  60 #if PARPORT_USE_PPDEV == 1
  61 #ifdef __FreeBSD__
  62 #include <dev/ppbus/ppi.h>
  63 #include <dev/ppbus/ppbconf.h>
  64 #define PPRSTATUS       PPIGSTATUS
  65 #define PPWDATA         PPISDATA
  66 #else
  67 #include <linux/parport.h>
  68 #include <linux/ppdev.h>
  69 #endif
  70 #include <fcntl.h>
  71 #include <sys/ioctl.h>
  72 #endif
  73
  74 #if PARPORT_USE_GIVEIO == 1
  75 #if IS_CYGWIN == 1
  76 #include <windows.h>
  77 #include <errno.h>
  78 #undef ERROR
  79 #endif
  80 #endif
  81
  82 #include "log.h"
  83
  84 /* configuration */
  85 unsigned long gw16012_port;
  86
  87 /* interface variables
  88  */
  89 static u8 gw16012_msb = 0x0;
  90 static u8 gw16012_control_value = 0x0;
  91
  92 #if PARPORT_USE_PPDEV == 1
  93 static int device_handle;
  94 #endif
  95
  96 int gw16012_execute_queue(void);
  97 int gw16012_register_commands(struct command_context_s *cmd_ctx);
  98 int gw16012_speed(int speed);
  99 int gw16012_init(void);
 100 int gw16012_quit(void);
 101
 102 int gw16012_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 103
 104 jtag_interface_t gw16012_interface =
 105 {
 106         .name = "gw16012",
 107
 108         .execute_queue = gw16012_execute_queue,
 109
 110         .support_pathmove = 0,
 111
 112         .speed = gw16012_speed,
 113         .register_commands = gw16012_register_commands,
 114         .init = gw16012_init,
 115         .quit = gw16012_quit,
 116 };
 117
 118 int gw16012_register_commands(struct command_context_s *cmd_ctx)
 119 {
 120         register_command(cmd_ctx, NULL, "parport_port", gw16012_handle_parport_port_command,
 121                                          COMMAND_CONFIG, NULL);
 122
 123         return ERROR_OK;
 124 }
 125
 126 void gw16012_data(u8 value)
 127 {
 128         value = (value & 0x7f) | gw16012_msb;
 129         gw16012_msb ^= 0x80; /* toggle MSB */
 130
 131 #ifdef _DEBUG_GW16012_IO_
 132         DEBUG("%2.2x", value);
 133 #endif
 134
 135         #if PARPORT_USE_PPDEV == 1
 136                 ioctl(device_handle, PPWDATA, &value);
 137         #else
 138                 #ifdef __FreeBSD__
 139                         outb(gw16012_port, value);
 140                 #else
 141                         outb(value, gw16012_port);
 142                 #endif
 143         #endif
 144 }
 145
 146 void gw16012_control(u8 value)
 147 {
 148         if (value != gw16012_control_value)
 149         {
 150                 gw16012_control_value = value;
 151
 152 #ifdef _DEBUG_GW16012_IO_
 153                 DEBUG("%2.2x", gw16012_control_value);
 154 #endif
 155
 156                 #if PARPORT_USE_PPDEV == 1
 157                         ioctl(device_handle, PPWCONTROL, &gw16012_control_value);
 158                 #else
 159                         #ifdef __FreeBSD__
 160                                 outb(gw16012_port + 2, gw16012_control_value);
 161                         #else
 162                                 outb(gw16012_control_value, gw16012_port + 2);
 163                         #endif
 164                 #endif
 165         }
 166 }
 167
 168 void gw16012_input(u8 *value)
 169 {
 170         #if PARPORT_USE_PPDEV == 1
 171                 ioctl(device_handle, PPRSTATUS, value);
 172         #else
 173                 *value = inb(gw16012_port + 1);
 174         #endif
 175
 176 #ifdef _DEBUG_GW16012_IO_
 177         DEBUG("%2.2x", *value);
 178 #endif
 179 }
 180
 181 /* (1) assert or (0) deassert reset lines */
 182 void gw16012_reset(int trst, int srst)
 183 {
 184         DEBUG("trst: %i, srst: %i", trst, srst);
 185
 186         if (trst == 0)
 187                 gw16012_control(0x0d);
 188         else if (trst == 1)
 189                 gw16012_control(0x0c);
 190
 191         if (srst == 0)
 192                 gw16012_control(0x0a);
 193         else if (srst == 1)
 194                 gw16012_control(0x0b);
 195 }
 196
 197 int gw16012_speed(int speed)
 198 {
 199
 200         return ERROR_OK;
 201 }
 202
 203 void gw16012_end_state(state)
 204 {
 205         if (tap_move_map[state] != -1)
 206                 end_state = state;
 207         else
 208         {
 209                 ERROR("BUG: %i is not a valid end state", state);
 210                 exit(-1);
 211         }
 212 }
 213
 214 void gw16012_state_move(void)
 215 {
 216         int i=0, tms=0;
 217         u8 tms_scan = TAP_MOVE(cur_state, end_state);
 218
 219         gw16012_control(0x0); /* single-bit mode */
 220
 221         for (i = 0; i < 7; i++)
 222         {
 223                 tms = (tms_scan >> i) & 1;
 224                 gw16012_data(tms << 1); /* output next TMS bit */
 225         }
 226
 227         cur_state = end_state;
 228 }
 229
 230 void gw16012_path_move(pathmove_command_t *cmd)
 231 {
 232         int num_states = cmd->num_states;
 233         int state_count;
 234
 235         state_count = 0;
 236         while (num_states)
 237         {
 238                 gw16012_control(0x0); /* single-bit mode */
 239                 if (tap_transitions[cur_state].low == cmd->path[state_count])
 240                 {
 241                         gw16012_data(0x0); /* TCK cycle with TMS low */
 242                 }
 243                 else if (tap_transitions[cur_state].high == cmd->path[state_count])
 244                 {
 245                         gw16012_data(0x2); /* TCK cycle with TMS high */
 246                 }
 247                 else
 248                 {
 249                         ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[cmd->path[state_count]]);
 250                         exit(-1);
 251                 }
 252
 253                 cur_state = cmd->path[state_count];
 254                 state_count++;
 255                 num_states--;
 256         }
 257
 258         end_state = cur_state;
 259 }
 260
 261 void gw16012_runtest(int num_cycles)
 262 {
 263         enum tap_state saved_end_state = end_state;
 264         int i;
 265
 266         /* only do a state_move when we're not already in RTI */
 267         if (cur_state != TAP_RTI)
 268         {
 269                 gw16012_end_state(TAP_RTI);
 270                 gw16012_state_move();
 271         }
 272
 273         for (i = 0; i < num_cycles; i++)
 274         {
 275                 gw16012_control(0x0); /* single-bit mode */
 276                 gw16012_data(0x0); /* TMS cycle with TMS low */
 277         }
 278
 279         gw16012_end_state(saved_end_state);
 280         if (cur_state != end_state)
 281                 gw16012_state_move();
 282 }
 283
 284 void gw16012_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size)
 285 {
 286         int bits_left = scan_size;
 287         int bit_count = 0;
 288         enum tap_state saved_end_state = end_state;
 289         u8 scan_out, scan_in;
 290
 291         if (ir_scan)
 292                 gw16012_end_state(TAP_SI);
 293         else
 294                 gw16012_end_state(TAP_SD);
 295
 296         gw16012_state_move();
 297         gw16012_end_state(saved_end_state);
 298
 299         while (type == SCAN_OUT && ((bits_left - 1) > 7))
 300         {
 301                 gw16012_control(0x2); /* seven-bit mode */
 302                 scan_out = buf_get_u32(buffer, bit_count, 7);
 303                 gw16012_data(scan_out);
 304                 bit_count += 7;
 305                 bits_left -= 7;
 306         }
 307
 308         gw16012_control(0x0); /* single-bit mode */
 309         while (bits_left-- > 0)
 310         {
 311                 u8 tms = 0;
 312                 if (bits_left == 0) /* last bit */
 313                 {
 314                         if ((ir_scan && (end_state == TAP_SI))
 315                                 || (!ir_scan && (end_state == TAP_SD)))
 316                         {
 317                                 tms = 0;
 318                         }
 319                         else
 320                         {
 321                                 tms = 2;
 322                         }
 323                 }
 324
 325                 scan_out = buf_get_u32(buffer, bit_count, 1);
 326                 gw16012_data(scan_out | tms);
 327                 if (type != SCAN_OUT)
 328                 {
 329                         gw16012_input(&scan_in);
 330                         buf_set_u32(buffer, bit_count, 1, ((scan_in & 0x08) >> 3));
 331                 }
 332                 bit_count++;
 333         }
 334
 335         if (!((ir_scan && (end_state == TAP_SI)) ||
 336                 (!ir_scan && (end_state == TAP_SD))))
 337         {
 338                 gw16012_data(0x0);
 339                 if (ir_scan)
 340                         cur_state = TAP_PI;
 341                 else
 342                         cur_state = TAP_PD;
 343
 344                 if (cur_state != end_state)
 345                         gw16012_state_move();
 346         }
 347 }
 348
 349 int gw16012_execute_queue(void)
 350 {
 351         jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
 352         int scan_size;
 353         enum scan_type type;
 354         u8 *buffer;
 355
 356         while (cmd)
 357         {
 358                 switch (cmd->type)
 359                 {
 360                         case JTAG_END_STATE:
 361 #ifdef _DEBUG_JTAG_IO_
 362                                 DEBUG("end_state: %i", cmd->cmd.end_state->end_state);
 363 #endif
 364                                 if (cmd->cmd.end_state->end_state != -1)
 365                                         gw16012_end_state(cmd->cmd.end_state->end_state);
 366                                 break;
 367                         case JTAG_RESET:
 368 #ifdef _DEBUG_JTAG_IO_
 369                                 DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
 370 #endif
 371                                 if (cmd->cmd.reset->trst == 1)
 372                                 {
 373                                         cur_state = TAP_TLR;
 374                                 }
 375                                 gw16012_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
 376                                 break;
 377                         case JTAG_RUNTEST:
 378 #ifdef _DEBUG_JTAG_IO_
 379                                 DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state);
 380 #endif
 381                                 if (cmd->cmd.runtest->end_state != -1)
 382                                         gw16012_end_state(cmd->cmd.runtest->end_state);
 383                                 gw16012_runtest(cmd->cmd.runtest->num_cycles);
 384                                 break;
 385                         case JTAG_STATEMOVE:
 386 #ifdef _DEBUG_JTAG_IO_
 387                                 DEBUG("statemove end in %i", cmd->cmd.statemove->end_state);
 388 #endif
 389                                 if (cmd->cmd.statemove->end_state != -1)
 390                                         gw16012_end_state(cmd->cmd.statemove->end_state);
 391                                 gw16012_state_move();
 392                                 break;
 393                         case JTAG_PATHMOVE:
 394 #ifdef _DEBUG_JTAG_IO_
 395                                 DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
 396 #endif
 397                                 gw16012_path_move(cmd->cmd.pathmove);
 398                                 break;
 399                         case JTAG_SCAN:
 400                                 if (cmd->cmd.scan->end_state != -1)
 401                                         gw16012_end_state(cmd->cmd.scan->end_state);
 402                                 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
 403                                 type = jtag_scan_type(cmd->cmd.scan);
 404 #ifdef _DEBUG_JTAG_IO_
 405                                 DEBUG("%s scan (%i) %i bit end in %i", (cmd->cmd.scan->ir_scan) ? "ir" : "dr",
 406                                         type, scan_size, cmd->cmd.scan->end_state);
 407 #endif
 408                                 gw16012_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
 409                                 if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
 410                                         return ERROR_JTAG_QUEUE_FAILED;
 411                                 if (buffer)
 412                                         free(buffer);
 413                                 break;
 414                         case JTAG_SLEEP:
 415 #ifdef _DEBUG_JTAG_IO_
 416                                 DEBUG("sleep", cmd->cmd.sleep->us);
 417 #endif
 418                                 jtag_sleep(cmd->cmd.sleep->us);
 419                                 break;
 420                         default:
 421                                 ERROR("BUG: unknown JTAG command type encountered");
 422                                 exit(-1);
 423                 }
 424                 cmd = cmd->next;
 425         }
 426
 427         return ERROR_OK;
 428 }
 429
 430 #if PARPORT_USE_GIVEIO == 1
 431 int gw16012_get_giveio_access()
 432 {
 433     HANDLE h;
 434     OSVERSIONINFO version;
 435
 436     version.dwOSVersionInfoSize = sizeof version;
 437     if (!GetVersionEx( &version )) {
 438         errno = EINVAL;
 439         return -1;
 440     }
 441     if (version.dwPlatformId != VER_PLATFORM_WIN32_NT)
 442         return 0;
 443
 444     h = CreateFile( "\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );
 445     if (h == INVALID_HANDLE_VALUE) {
 446         errno = ENODEV;
 447         return -1;
 448     }
 449
 450     CloseHandle( h );
 451
 452     return 0;
 453 }
 454 #endif
 455
 456 int gw16012_init(void)
 457 {
 458 #if PARPORT_USE_PPDEV == 1
 459         char buffer[256];
 460         int i = 0;
 461         u8 control_port;
 462 #endif
 463         u8 status_port;
 464
 465 #if PARPORT_USE_PPDEV == 1
 466         if (device_handle>0)
 467         {
 468                 ERROR("device is already opened");
 469                 return ERROR_JTAG_INIT_FAILED;
 470         }
 471
 472 #ifdef __FreeBSD__
 473         DEBUG("opening /dev/ppi%d...", gw16012_port);
 474
 475         snprintf(buffer, 256, "/dev/ppi%d", gw16012_port);
 476         device_handle = open(buffer, O_WRONLY);
 477 #else
 478         DEBUG("opening /dev/parport%d...", gw16012_port);
 479
 480         snprintf(buffer, 256, "/dev/parport%d", gw16012_port);
 481         device_handle = open(buffer, O_WRONLY);
 482 #endif
 483         if (device_handle<0)
 484         {
 485                 ERROR("cannot open device. check it exists and that user read and write rights are set");
 486                 return ERROR_JTAG_INIT_FAILED;
 487         }
 488
 489         DEBUG("...open");
 490
 491 #ifndef __FreeBSD__
 492         i=ioctl(device_handle, PPCLAIM);
 493         if (i<0)
 494         {
 495                 ERROR("cannot claim device");
 496                 return ERROR_JTAG_INIT_FAILED;
 497         }
 498
 499         i = PARPORT_MODE_COMPAT;
 500         i= ioctl(device_handle, PPSETMODE, & i);
 501         if (i<0)
 502         {
 503                 ERROR(" cannot set compatible mode to device");
 504                 return ERROR_JTAG_INIT_FAILED;
 505         }
 506
 507         i = IEEE1284_MODE_COMPAT;
 508         i = ioctl(device_handle, PPNEGOT, & i);
 509         if (i<0)
 510         {
 511                 ERROR("cannot set compatible 1284 mode to device");
 512                 return ERROR_JTAG_INIT_FAILED;
 513         }
 514 #endif
 515 #else
 516         if (gw16012_port == 0)
 517         {
 518                 gw16012_port = 0x378;
 519                 WARNING("No gw16012 port specified, using default '0x378' (LPT1)");
 520         }
 521
 522         DEBUG("requesting privileges for parallel port 0x%x...", gw16012_port);
 523 #if PARPORT_USE_GIVEIO == 1
 524         if (gw16012_get_giveio_access() != 0)
 525 #else /* PARPORT_USE_GIVEIO */
 526         if (ioperm(gw16012_port, 3, 1) != 0)
 527 #endif /* PARPORT_USE_GIVEIO */
 528         {
 529                 ERROR("missing privileges for direct i/o");
 530                 return ERROR_JTAG_INIT_FAILED;
 531         }
 532         DEBUG("...privileges granted");
 533 #endif /* PARPORT_USE_PPDEV */
 534
 535         gw16012_input(&status_port);
 536         gw16012_msb = (status_port & 0x80) ^ 0x80;
 537
 538         gw16012_speed(jtag_speed);
 539         gw16012_reset(0, 0);
 540
 541         return ERROR_OK;
 542 }
 543
 544 int gw16012_quit(void)
 545 {
 546
 547         return ERROR_OK;
 548 }
 549
 550 int gw16012_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 551 {
 552         if (argc == 0)
 553                 return ERROR_OK;
 554
 555         /* only if the port wasn't overwritten by cmdline */
 556         if (gw16012_port == 0)
 557                 gw16012_port = strtoul(args[0], NULL, 0);
 558
 559         return ERROR_OK;
 560 }