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 #ifdef _WIN32
  47 #include "errno.h"
  48 #endif /* _WIN32 */
  49
  50 #endif /* __FreeBSD__ */
  51
  52 #include <string.h>
  53 #include <stdlib.h>
  54
  55 #include <sys/time.h>
  56 #include <time.h>
  57
  58 #if PARPORT_USE_PPDEV == 1
  59 #ifdef __FreeBSD__
  60 #include <dev/ppbus/ppi.h>
  61 #include <dev/ppbus/ppbconf.h>
  62 #define PPRSTATUS       PPIGSTATUS
  63 #define PPWDATA         PPISDATA
  64 #else
  65 #include <linux/parport.h>
  66 #include <linux/ppdev.h>
  67 #endif
  68 #include <fcntl.h>
  69 #include <sys/ioctl.h>
  70 #else /* not PARPORT_USE_PPDEV */
  71 #ifndef _WIN32
  72 #include <sys/io.h>
  73 #endif
  74 #endif
  75
  76 #if PARPORT_USE_GIVEIO == 1
  77 #if IS_CYGWIN == 1
  78 #include <windows.h>
  79 #include <errno.h>
  80 #undef ERROR
  81 #endif
  82 #endif
  83
  84 #include "log.h"
  85
  86 /* configuration */
  87 unsigned long gw16012_port;
  88
  89 /* interface variables
  90  */
  91 static u8 gw16012_msb = 0x0;
  92 static u8 gw16012_control_value = 0x0;
  93
  94 #if PARPORT_USE_PPDEV == 1
  95 static int device_handle;
  96 #endif
  97
  98 int gw16012_execute_queue(void);
  99 int gw16012_register_commands(struct command_context_s *cmd_ctx);
 100 int gw16012_speed(int speed);
 101 int gw16012_init(void);
 102 int gw16012_quit(void);
 103
 104 int gw16012_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 105
 106 jtag_interface_t gw16012_interface =
 107 {
 108         .name = "gw16012",
 109
 110         .execute_queue = gw16012_execute_queue,
 111
 112         .support_pathmove = 0,
 113
 114         .speed = gw16012_speed,
 115         .register_commands = gw16012_register_commands,
 116         .init = gw16012_init,
 117         .quit = gw16012_quit,
 118 };
 119
 120 int gw16012_register_commands(struct command_context_s *cmd_ctx)
 121 {
 122         register_command(cmd_ctx, NULL, "parport_port", gw16012_handle_parport_port_command,
 123                                          COMMAND_CONFIG, NULL);
 124
 125         return ERROR_OK;
 126 }
 127
 128 void gw16012_data(u8 value)
 129 {
 130         value = (value & 0x7f) | gw16012_msb;
 131         gw16012_msb ^= 0x80; /* toggle MSB */
 132
 133 #ifdef _DEBUG_GW16012_IO_
 134         DEBUG("%2.2x", value);
 135 #endif
 136
 137         #if PARPORT_USE_PPDEV == 1
 138                 ioctl(device_handle, PPWDATA, &value);
 139         #else
 140                 #ifdef __FreeBSD__
 141                         outb(gw16012_port, value);
 142                 #else
 143                         outb(value, gw16012_port);
 144                 #endif
 145         #endif
 146 }
 147
 148 void gw16012_control(u8 value)
 149 {
 150         if (value != gw16012_control_value)
 151         {
 152                 gw16012_control_value = value;
 153
 154 #ifdef _DEBUG_GW16012_IO_
 155                 DEBUG("%2.2x", gw16012_control_value);
 156 #endif
 157
 158                 #if PARPORT_USE_PPDEV == 1
 159                         ioctl(device_handle, PPWCONTROL, &gw16012_control_value);
 160                 #else
 161                         #ifdef __FreeBSD__
 162                                 outb(gw16012_port + 2, gw16012_control_value);
 163                         #else
 164                                 outb(gw16012_control_value, gw16012_port + 2);
 165                         #endif
 166                 #endif
 167         }
 168 }
 169
 170 void gw16012_input(u8 *value)
 171 {
 172         #if PARPORT_USE_PPDEV == 1
 173                 ioctl(device_handle, PPRSTATUS, value);
 174         #else
 175                 *value = inb(gw16012_port + 1);
 176         #endif
 177
 178 #ifdef _DEBUG_GW16012_IO_
 179         DEBUG("%2.2x", *value);
 180 #endif
 181 }
 182
 183 /* (1) assert or (0) deassert reset lines */
 184 void gw16012_reset(int trst, int srst)
 185 {
 186         DEBUG("trst: %i, srst: %i", trst, srst);
 187
 188         if (trst == 0)
 189                 gw16012_control(0x0d);
 190         else if (trst == 1)
 191                 gw16012_control(0x0c);
 192
 193         if (srst == 0)
 194                 gw16012_control(0x0a);
 195         else if (srst == 1)
 196                 gw16012_control(0x0b);
 197 }
 198
 199 int gw16012_speed(int speed)
 200 {
 201
 202         return ERROR_OK;
 203 }
 204
 205 void gw16012_end_state(state)
 206 {
 207         if (tap_move_map[state] != -1)
 208                 end_state = state;
 209         else
 210         {
 211                 ERROR("BUG: %i is not a valid end state", state);
 212                 exit(-1);
 213         }
 214 }
 215
 216 void gw16012_state_move(void)
 217 {
 218         int i=0, tms=0;
 219         u8 tms_scan = TAP_MOVE(cur_state, end_state);
 220
 221         gw16012_control(0x0); /* single-bit mode */
 222
 223         for (i = 0; i < 7; i++)
 224         {
 225                 tms = (tms_scan >> i) & 1;
 226                 gw16012_data(tms << 1); /* output next TMS bit */
 227         }
 228
 229         cur_state = end_state;
 230 }
 231
 232 void gw16012_path_move(pathmove_command_t *cmd)
 233 {
 234         int num_states = cmd->num_states;
 235         int state_count;
 236
 237         state_count = 0;
 238         while (num_states)
 239         {
 240                 gw16012_control(0x0); /* single-bit mode */
 241                 if (tap_transitions[cur_state].low == cmd->path[state_count])
 242                 {
 243                         gw16012_data(0x0); /* TCK cycle with TMS low */
 244                 }
 245                 else if (tap_transitions[cur_state].high == cmd->path[state_count])
 246                 {
 247                         gw16012_data(0x2); /* TCK cycle with TMS high */
 248                 }
 249                 else
 250                 {
 251                         ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[cmd->path[state_count]]);
 252                         exit(-1);
 253                 }
 254
 255                 cur_state = cmd->path[state_count];
 256                 state_count++;
 257                 num_states--;
 258         }
 259
 260         end_state = cur_state;
 261 }
 262
 263 void gw16012_runtest(int num_cycles)
 264 {
 265         enum tap_state saved_end_state = end_state;
 266         int i;
 267
 268         /* only do a state_move when we're not already in RTI */
 269         if (cur_state != TAP_RTI)
 270         {
 271                 gw16012_end_state(TAP_RTI);
 272                 gw16012_state_move();
 273         }
 274
 275         for (i = 0; i < num_cycles; i++)
 276         {
 277                 gw16012_control(0x0); /* single-bit mode */
 278                 gw16012_data(0x0); /* TMS cycle with TMS low */
 279         }
 280
 281         gw16012_end_state(saved_end_state);
 282         if (cur_state != end_state)
 283                 gw16012_state_move();
 284 }
 285
 286 void gw16012_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size)
 287 {
 288         int bits_left = scan_size;
 289         int bit_count = 0;
 290         enum tap_state saved_end_state = end_state;
 291         u8 scan_out, scan_in;
 292
 293         /* only if we're not already in the correct Shift state */
 294         if (!((!ir_scan && (cur_state == TAP_SD)) || (ir_scan && (cur_state == TAP_SI))))
 295         {
 296                 if (ir_scan)
 297                         gw16012_end_state(TAP_SI);
 298                 else
 299                         gw16012_end_state(TAP_SD);
 300
 301                 gw16012_state_move();
 302                 gw16012_end_state(saved_end_state);
 303         }
 304
 305         while (type == SCAN_OUT && ((bits_left - 1) > 7))
 306         {
 307                 gw16012_control(0x2); /* seven-bit mode */
 308                 scan_out = buf_get_u32(buffer, bit_count, 7);
 309                 gw16012_data(scan_out);
 310                 bit_count += 7;
 311                 bits_left -= 7;
 312         }
 313
 314         gw16012_control(0x0); /* single-bit mode */
 315         while (bits_left-- > 0)
 316         {
 317                 u8 tms = 0;
 318
 319                 scan_out = buf_get_u32(buffer, bit_count, 1);
 320
 321                 if (bits_left == 0) /* last bit */
 322                 {
 323                         if ((ir_scan && (end_state == TAP_SI))
 324                                 || (!ir_scan && (end_state == TAP_SD)))
 325                         {
 326                                 tms = 0;
 327                         }
 328                         else
 329                         {
 330                                 tms = 2;
 331                         }
 332                 }
 333
 334                 gw16012_data(scan_out | tms);
 335
 336                 if (type != SCAN_OUT)
 337                 {
 338                         gw16012_input(&scan_in);
 339                         buf_set_u32(buffer, bit_count, 1, ((scan_in & 0x08) >> 3));
 340                 }
 341
 342                 bit_count++;
 343         }
 344
 345         if (!((ir_scan && (end_state == TAP_SI)) ||
 346                 (!ir_scan && (end_state == TAP_SD))))
 347         {
 348                 gw16012_data(0x0);
 349                 if (ir_scan)
 350                         cur_state = TAP_PI;
 351                 else
 352                         cur_state = TAP_PD;
 353
 354                 if (cur_state != end_state)
 355                         gw16012_state_move();
 356         }
 357 }
 358
 359 int gw16012_execute_queue(void)
 360 {
 361         jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
 362         int scan_size;
 363         enum scan_type type;
 364         u8 *buffer;
 365         int retval;
 366
 367         /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
 368          * that wasn't handled by a caller-provided error handler
 369          */
 370         retval = ERROR_OK;
 371
 372         while (cmd)
 373         {
 374                 switch (cmd->type)
 375                 {
 376                         case JTAG_END_STATE:
 377 #ifdef _DEBUG_JTAG_IO_
 378                                 DEBUG("end_state: %i", cmd->cmd.end_state->end_state);
 379 #endif
 380                                 if (cmd->cmd.end_state->end_state != -1)
 381                                         gw16012_end_state(cmd->cmd.end_state->end_state);
 382                                 break;
 383                         case JTAG_RESET:
 384 #ifdef _DEBUG_JTAG_IO_
 385                                 DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
 386 #endif
 387                                 if (cmd->cmd.reset->trst == 1)
 388                                 {
 389                                         cur_state = TAP_TLR;
 390                                 }
 391                                 gw16012_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
 392                                 break;
 393                         case JTAG_RUNTEST:
 394 #ifdef _DEBUG_JTAG_IO_
 395                                 DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state);
 396 #endif
 397                                 if (cmd->cmd.runtest->end_state != -1)
 398                                         gw16012_end_state(cmd->cmd.runtest->end_state);
 399                                 gw16012_runtest(cmd->cmd.runtest->num_cycles);
 400                                 break;
 401                         case JTAG_STATEMOVE:
 402 #ifdef _DEBUG_JTAG_IO_
 403                                 DEBUG("statemove end in %i", cmd->cmd.statemove->end_state);
 404 #endif
 405                                 if (cmd->cmd.statemove->end_state != -1)
 406                                         gw16012_end_state(cmd->cmd.statemove->end_state);
 407                                 gw16012_state_move();
 408                                 break;
 409                         case JTAG_PATHMOVE:
 410 #ifdef _DEBUG_JTAG_IO_
 411                                 DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
 412 #endif
 413                                 gw16012_path_move(cmd->cmd.pathmove);
 414                                 break;
 415                         case JTAG_SCAN:
 416                                 if (cmd->cmd.scan->end_state != -1)
 417                                         gw16012_end_state(cmd->cmd.scan->end_state);
 418                                 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
 419                                 type = jtag_scan_type(cmd->cmd.scan);
 420 #ifdef _DEBUG_JTAG_IO_
 421                                 DEBUG("%s scan (%i) %i bit end in %i", (cmd->cmd.scan->ir_scan) ? "ir" : "dr",
 422                                         type, scan_size, cmd->cmd.scan->end_state);
 423 #endif
 424                                 gw16012_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
 425                                 if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
 426                                         retval = ERROR_JTAG_QUEUE_FAILED;
 427                                 if (buffer)
 428                                         free(buffer);
 429                                 break;
 430                         case JTAG_SLEEP:
 431 #ifdef _DEBUG_JTAG_IO_
 432                                 DEBUG("sleep %i", cmd->cmd.sleep->us);
 433 #endif
 434                                 jtag_sleep(cmd->cmd.sleep->us);
 435                                 break;
 436                         default:
 437                                 ERROR("BUG: unknown JTAG command type encountered");
 438                                 exit(-1);
 439                 }
 440                 cmd = cmd->next;
 441         }
 442
 443         return retval;
 444 }
 445
 446 #if PARPORT_USE_GIVEIO == 1
 447 int gw16012_get_giveio_access()
 448 {
 449     HANDLE h;
 450     OSVERSIONINFO version;
 451
 452     version.dwOSVersionInfoSize = sizeof version;
 453     if (!GetVersionEx( &version )) {
 454         errno = EINVAL;
 455         return -1;
 456     }
 457     if (version.dwPlatformId != VER_PLATFORM_WIN32_NT)
 458         return 0;
 459
 460     h = CreateFile( "\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );
 461     if (h == INVALID_HANDLE_VALUE) {
 462         errno = ENODEV;
 463         return -1;
 464     }
 465
 466     CloseHandle( h );
 467
 468     return 0;
 469 }
 470 #endif
 471
 472 int gw16012_init(void)
 473 {
 474 #if PARPORT_USE_PPDEV == 1
 475         char buffer[256];
 476         int i = 0;
 477         u8 control_port;
 478 #endif
 479         u8 status_port;
 480
 481 #if PARPORT_USE_PPDEV == 1
 482         if (device_handle>0)
 483         {
 484                 ERROR("device is already opened");
 485                 return ERROR_JTAG_INIT_FAILED;
 486         }
 487
 488 #ifdef __FreeBSD__
 489         DEBUG("opening /dev/ppi%d...", gw16012_port);
 490
 491         snprintf(buffer, 256, "/dev/ppi%d", gw16012_port);
 492         device_handle = open(buffer, O_WRONLY);
 493 #else
 494         DEBUG("opening /dev/parport%d...", gw16012_port);
 495
 496         snprintf(buffer, 256, "/dev/parport%d", gw16012_port);
 497         device_handle = open(buffer, O_WRONLY);
 498 #endif
 499         if (device_handle<0)
 500         {
 501                 ERROR("cannot open device. check it exists and that user read and write rights are set");
 502                 return ERROR_JTAG_INIT_FAILED;
 503         }
 504
 505         DEBUG("...open");
 506
 507 #ifndef __FreeBSD__
 508         i=ioctl(device_handle, PPCLAIM);
 509         if (i<0)
 510         {
 511                 ERROR("cannot claim device");
 512                 return ERROR_JTAG_INIT_FAILED;
 513         }
 514
 515         i = PARPORT_MODE_COMPAT;
 516         i= ioctl(device_handle, PPSETMODE, & i);
 517         if (i<0)
 518         {
 519                 ERROR(" cannot set compatible mode to device");
 520                 return ERROR_JTAG_INIT_FAILED;
 521         }
 522
 523         i = IEEE1284_MODE_COMPAT;
 524         i = ioctl(device_handle, PPNEGOT, & i);
 525         if (i<0)
 526         {
 527                 ERROR("cannot set compatible 1284 mode to device");
 528                 return ERROR_JTAG_INIT_FAILED;
 529         }
 530 #endif
 531 #else
 532         if (gw16012_port == 0)
 533         {
 534                 gw16012_port = 0x378;
 535                 WARNING("No gw16012 port specified, using default '0x378' (LPT1)");
 536         }
 537
 538         DEBUG("requesting privileges for parallel port 0x%lx...", gw16012_port);
 539 #if PARPORT_USE_GIVEIO == 1
 540         if (gw16012_get_giveio_access() != 0)
 541 #else /* PARPORT_USE_GIVEIO */
 542         if (ioperm(gw16012_port, 3, 1) != 0)
 543 #endif /* PARPORT_USE_GIVEIO */
 544         {
 545                 ERROR("missing privileges for direct i/o");
 546                 return ERROR_JTAG_INIT_FAILED;
 547         }
 548         DEBUG("...privileges granted");
 549
 550         /* make sure parallel port is in right mode (clear tristate and interrupt */
 551 #ifdef __FreeBSD__
 552         outb(gw16012_port + 2, 0x0);
 553 #else
 554         outb(0x0, gw16012_port + 2);
 555 #endif
 556 #endif /* PARPORT_USE_PPDEV */
 557
 558         gw16012_input(&status_port);
 559         gw16012_msb = (status_port & 0x80) ^ 0x80;
 560
 561         gw16012_speed(jtag_speed);
 562         gw16012_reset(0, 0);
 563
 564         return ERROR_OK;
 565 }
 566
 567 int gw16012_quit(void)
 568 {
 569
 570         return ERROR_OK;
 571 }
 572
 573 int gw16012_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 574 {
 575         if (argc == 0)
 576                 return ERROR_OK;
 577
 578         /* only if the port wasn't overwritten by cmdline */
 579         if (gw16012_port == 0)
 580                 gw16012_port = strtoul(args[0], NULL, 0);
 581
 582         return ERROR_OK;
 583 }