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   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 /*  -ino: 060521-1036 */
  34 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
  35
  36 #include <sys/types.h>
  37 #include <machine/sysarch.h>
  38 #include <machine/cpufunc.h>
  39 #define ioperm(startport,length,enable)\
  40   i386_set_ioperm((startport), (length), (enable))
  41
  42 #else
  43
  44 #ifdef _WIN32
  45 #include "errno.h"
  46 #endif /* _WIN32 */
  47
  48 #endif /* __FreeBSD__, __FreeBSD_kernel__ */
  49
  50 #include <string.h>
  51 #include <stdlib.h>
  52
  53 #include <sys/time.h>
  54 #include <time.h>
  55
  56 #if PARPORT_USE_PPDEV == 1
  57 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
  58 #include <dev/ppbus/ppi.h>
  59 #include <dev/ppbus/ppbconf.h>
  60 #define PPRSTATUS       PPIGSTATUS
  61 #define PPWDATA         PPISDATA
  62 #else
  63 #include <linux/parport.h>
  64 #include <linux/ppdev.h>
  65 #endif
  66 #include <fcntl.h>
  67 #include <sys/ioctl.h>
  68 #else /* not PARPORT_USE_PPDEV */
  69 #ifndef _WIN32
  70 #include <sys/io.h>
  71 #endif
  72 #endif
  73
  74 #if PARPORT_USE_GIVEIO == 1
  75 #if IS_CYGWIN == 1
  76 #include <windows.h>
  77 #include <errno.h>
  78 #endif
  79 #endif
  80
  81 #include "log.h"
  82
  83 /* configuration */
  84 u16 gw16012_port;
  85
  86 /* interface variables
  87  */
  88 static u8 gw16012_msb = 0x0;
  89 static u8 gw16012_control_value = 0x0;
  90
  91 #if PARPORT_USE_PPDEV == 1
  92 static int device_handle;
  93 #endif
  94
  95 int gw16012_execute_queue(void);
  96 int gw16012_register_commands(struct command_context_s *cmd_ctx);
  97 int gw16012_speed(int speed);
  98 int gw16012_init(void);
  99 int gw16012_quit(void);
 100
 101 int gw16012_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 102
 103 jtag_interface_t gw16012_interface =
 104 {
 105         .name = "gw16012",
 106
 107         .execute_queue = gw16012_execute_queue,
 108
 109         .speed = gw16012_speed,
 110         .register_commands = gw16012_register_commands,
 111         .init = gw16012_init,
 112         .quit = gw16012_quit,
 113 };
 114
 115 int gw16012_register_commands(struct command_context_s *cmd_ctx)
 116 {
 117         register_command(cmd_ctx, NULL, "parport_port", gw16012_handle_parport_port_command,
 118                                          COMMAND_CONFIG, NULL);
 119
 120         return ERROR_OK;
 121 }
 122
 123 void gw16012_data(u8 value)
 124 {
 125         value = (value & 0x7f) | gw16012_msb;
 126         gw16012_msb ^= 0x80; /* toggle MSB */
 127
 128 #ifdef _DEBUG_GW16012_IO_
 129         LOG_DEBUG("%2.2x", value);
 130 #endif
 131
 132         #if PARPORT_USE_PPDEV == 1
 133                 ioctl(device_handle, PPWDATA, &value);
 134         #else
 135                 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
 136                         outb(gw16012_port, value);
 137                 #else
 138                         outb(value, gw16012_port);
 139                 #endif
 140         #endif
 141 }
 142
 143 void gw16012_control(u8 value)
 144 {
 145         if (value != gw16012_control_value)
 146         {
 147                 gw16012_control_value = value;
 148
 149 #ifdef _DEBUG_GW16012_IO_
 150                 LOG_DEBUG("%2.2x", gw16012_control_value);
 151 #endif
 152
 153                 #if PARPORT_USE_PPDEV == 1
 154                         ioctl(device_handle, PPWCONTROL, &gw16012_control_value);
 155                 #else
 156                         #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
 157                                 outb(gw16012_port + 2, gw16012_control_value);
 158                         #else
 159                                 outb(gw16012_control_value, gw16012_port + 2);
 160                         #endif
 161                 #endif
 162         }
 163 }
 164
 165 void gw16012_input(u8 *value)
 166 {
 167         #if PARPORT_USE_PPDEV == 1
 168                 ioctl(device_handle, PPRSTATUS, value);
 169         #else
 170                 *value = inb(gw16012_port + 1);
 171         #endif
 172
 173 #ifdef _DEBUG_GW16012_IO_
 174         LOG_DEBUG("%2.2x", *value);
 175 #endif
 176 }
 177
 178 /* (1) assert or (0) deassert reset lines */
 179 void gw16012_reset(int trst, int srst)
 180 {
 181         LOG_DEBUG("trst: %i, srst: %i", trst, srst);
 182
 183         if (trst == 0)
 184                 gw16012_control(0x0d);
 185         else if (trst == 1)
 186                 gw16012_control(0x0c);
 187
 188         if (srst == 0)
 189                 gw16012_control(0x0a);
 190         else if (srst == 1)
 191                 gw16012_control(0x0b);
 192 }
 193
 194 int gw16012_speed(int speed)
 195 {
 196
 197         return ERROR_OK;
 198 }
 199
 200 void gw16012_end_state(state)
 201 {
 202         if (tap_move_map[state] != -1)
 203                 end_state = state;
 204         else
 205         {
 206                 LOG_ERROR("BUG: %i is not a valid end state", state);
 207                 exit(-1);
 208         }
 209 }
 210
 211 void gw16012_state_move(void)
 212 {
 213         int i=0, tms=0;
 214         u8 tms_scan = TAP_MOVE(cur_state, end_state);
 215
 216         gw16012_control(0x0); /* single-bit mode */
 217
 218         for (i = 0; i < 7; i++)
 219         {
 220                 tms = (tms_scan >> i) & 1;
 221                 gw16012_data(tms << 1); /* output next TMS bit */
 222         }
 223
 224         cur_state = end_state;
 225 }
 226
 227 void gw16012_path_move(pathmove_command_t *cmd)
 228 {
 229         int num_states = cmd->num_states;
 230         int state_count;
 231
 232         state_count = 0;
 233         while (num_states)
 234         {
 235                 gw16012_control(0x0); /* single-bit mode */
 236                 if (tap_transitions[cur_state].low == cmd->path[state_count])
 237                 {
 238                         gw16012_data(0x0); /* TCK cycle with TMS low */
 239                 }
 240                 else if (tap_transitions[cur_state].high == cmd->path[state_count])
 241                 {
 242                         gw16012_data(0x2); /* TCK cycle with TMS high */
 243                 }
 244                 else
 245                 {
 246                         LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[cmd->path[state_count]]);
 247                         exit(-1);
 248                 }
 249
 250                 cur_state = cmd->path[state_count];
 251                 state_count++;
 252                 num_states--;
 253         }
 254
 255         end_state = cur_state;
 256 }
 257
 258 void gw16012_runtest(int num_cycles)
 259 {
 260         enum tap_state saved_end_state = end_state;
 261         int i;
 262
 263         /* only do a state_move when we're not already in RTI */
 264         if (cur_state != TAP_RTI)
 265         {
 266                 gw16012_end_state(TAP_RTI);
 267                 gw16012_state_move();
 268         }
 269
 270         for (i = 0; i < num_cycles; i++)
 271         {
 272                 gw16012_control(0x0); /* single-bit mode */
 273                 gw16012_data(0x0); /* TMS cycle with TMS low */
 274         }
 275
 276         gw16012_end_state(saved_end_state);
 277         if (cur_state != end_state)
 278                 gw16012_state_move();
 279 }
 280
 281 void gw16012_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size)
 282 {
 283         int bits_left = scan_size;
 284         int bit_count = 0;
 285         enum tap_state saved_end_state = end_state;
 286         u8 scan_out, scan_in;
 287
 288         /* only if we're not already in the correct Shift state */
 289         if (!((!ir_scan && (cur_state == TAP_SD)) || (ir_scan && (cur_state == TAP_SI))))
 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
 300         while (type == SCAN_OUT && ((bits_left - 1) > 7))
 301         {
 302                 gw16012_control(0x2); /* seven-bit mode */
 303                 scan_out = buf_get_u32(buffer, bit_count, 7);
 304                 gw16012_data(scan_out);
 305                 bit_count += 7;
 306                 bits_left -= 7;
 307         }
 308
 309         gw16012_control(0x0); /* single-bit mode */
 310         while (bits_left-- > 0)
 311         {
 312                 u8 tms = 0;
 313
 314                 scan_out = buf_get_u32(buffer, bit_count, 1);
 315
 316                 if (bits_left == 0) /* last bit */
 317                 {
 318                         if ((ir_scan && (end_state == TAP_SI))
 319                                 || (!ir_scan && (end_state == TAP_SD)))
 320                         {
 321                                 tms = 0;
 322                         }
 323                         else
 324                         {
 325                                 tms = 2;
 326                         }
 327                 }
 328
 329                 gw16012_data(scan_out | tms);
 330
 331                 if (type != SCAN_OUT)
 332                 {
 333                         gw16012_input(&scan_in);
 334                         buf_set_u32(buffer, bit_count, 1, ((scan_in & 0x08) >> 3));
 335                 }
 336
 337                 bit_count++;
 338         }
 339
 340         if (!((ir_scan && (end_state == TAP_SI)) ||
 341                 (!ir_scan && (end_state == TAP_SD))))
 342         {
 343                 gw16012_data(0x0);
 344                 if (ir_scan)
 345                         cur_state = TAP_PI;
 346                 else
 347                         cur_state = TAP_PD;
 348
 349                 if (cur_state != end_state)
 350                         gw16012_state_move();
 351         }
 352 }
 353
 354 int gw16012_execute_queue(void)
 355 {
 356         jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
 357         int scan_size;
 358         enum scan_type type;
 359         u8 *buffer;
 360         int retval;
 361
 362         /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
 363          * that wasn't handled by a caller-provided error handler
 364          */
 365         retval = ERROR_OK;
 366
 367         while (cmd)
 368         {
 369                 switch (cmd->type)
 370                 {
 371                         case JTAG_END_STATE:
 372 #ifdef _DEBUG_JTAG_IO_
 373                                 LOG_DEBUG("end_state: %i", cmd->cmd.end_state->end_state);
 374 #endif
 375                                 if (cmd->cmd.end_state->end_state != -1)
 376                                         gw16012_end_state(cmd->cmd.end_state->end_state);
 377                                 break;
 378                         case JTAG_RESET:
 379 #ifdef _DEBUG_JTAG_IO_
 380                                 LOG_DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
 381 #endif
 382                                 if (cmd->cmd.reset->trst == 1)
 383                                 {
 384                                         cur_state = TAP_TLR;
 385                                 }
 386                                 gw16012_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
 387                                 break;
 388                         case JTAG_RUNTEST:
 389 #ifdef _DEBUG_JTAG_IO_
 390                                 LOG_DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state);
 391 #endif
 392                                 if (cmd->cmd.runtest->end_state != -1)
 393                                         gw16012_end_state(cmd->cmd.runtest->end_state);
 394                                 gw16012_runtest(cmd->cmd.runtest->num_cycles);
 395                                 break;
 396                         case JTAG_STATEMOVE:
 397 #ifdef _DEBUG_JTAG_IO_
 398                                 LOG_DEBUG("statemove end in %i", cmd->cmd.statemove->end_state);
 399 #endif
 400                                 if (cmd->cmd.statemove->end_state != -1)
 401                                         gw16012_end_state(cmd->cmd.statemove->end_state);
 402                                 gw16012_state_move();
 403                                 break;
 404                         case JTAG_PATHMOVE:
 405 #ifdef _DEBUG_JTAG_IO_
 406                                 LOG_DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
 407 #endif
 408                                 gw16012_path_move(cmd->cmd.pathmove);
 409                                 break;
 410                         case JTAG_SCAN:
 411                                 if (cmd->cmd.scan->end_state != -1)
 412                                         gw16012_end_state(cmd->cmd.scan->end_state);
 413                                 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
 414                                 type = jtag_scan_type(cmd->cmd.scan);
 415 #ifdef _DEBUG_JTAG_IO_
 416                                 LOG_DEBUG("%s scan (%i) %i bit end in %i", (cmd->cmd.scan->ir_scan) ? "ir" : "dr",
 417                                         type, scan_size, cmd->cmd.scan->end_state);
 418 #endif
 419                                 gw16012_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
 420                                 if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
 421                                         retval = ERROR_JTAG_QUEUE_FAILED;
 422                                 if (buffer)
 423                                         free(buffer);
 424                                 break;
 425                         case JTAG_SLEEP:
 426 #ifdef _DEBUG_JTAG_IO_
 427                                 LOG_DEBUG("sleep %i", cmd->cmd.sleep->us);
 428 #endif
 429                                 jtag_sleep(cmd->cmd.sleep->us);
 430                                 break;
 431                         default:
 432                                 LOG_ERROR("BUG: unknown JTAG command type encountered");
 433                                 exit(-1);
 434                 }
 435                 cmd = cmd->next;
 436         }
 437
 438         return retval;
 439 }
 440
 441 #if PARPORT_USE_GIVEIO == 1
 442 int gw16012_get_giveio_access()
 443 {
 444     HANDLE h;
 445     OSVERSIONINFO version;
 446
 447     version.dwOSVersionInfoSize = sizeof version;
 448     if (!GetVersionEx( &version )) {
 449         errno = EINVAL;
 450         return -1;
 451     }
 452     if (version.dwPlatformId != VER_PLATFORM_WIN32_NT)
 453         return 0;
 454
 455     h = CreateFile( "\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );
 456     if (h == INVALID_HANDLE_VALUE) {
 457         errno = ENODEV;
 458         return -1;
 459     }
 460
 461     CloseHandle( h );
 462
 463     return 0;
 464 }
 465 #endif
 466
 467 int gw16012_init(void)
 468 {
 469 #if PARPORT_USE_PPDEV == 1
 470         char buffer[256];
 471         int i = 0;
 472 #endif
 473         u8 status_port;
 474
 475 #if PARPORT_USE_PPDEV == 1
 476         if (device_handle>0)
 477         {
 478                 LOG_ERROR("device is already opened");
 479                 return ERROR_JTAG_INIT_FAILED;
 480         }
 481
 482 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
 483         LOG_DEBUG("opening /dev/ppi%d...", gw16012_port);
 484
 485         snprintf(buffer, 256, "/dev/ppi%d", gw16012_port);
 486         device_handle = open(buffer, O_WRONLY);
 487 #else
 488         LOG_DEBUG("opening /dev/parport%d...", gw16012_port);
 489
 490         snprintf(buffer, 256, "/dev/parport%d", gw16012_port);
 491         device_handle = open(buffer, O_WRONLY);
 492 #endif
 493         if (device_handle<0)
 494         {
 495                 LOG_ERROR("cannot open device. check it exists and that user read and write rights are set");
 496                 return ERROR_JTAG_INIT_FAILED;
 497         }
 498
 499         LOG_DEBUG("...open");
 500
 501 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
 502         i=ioctl(device_handle, PPCLAIM);
 503         if (i<0)
 504         {
 505                 LOG_ERROR("cannot claim device");
 506                 return ERROR_JTAG_INIT_FAILED;
 507         }
 508
 509         i = PARPORT_MODE_COMPAT;
 510         i= ioctl(device_handle, PPSETMODE, & i);
 511         if (i<0)
 512         {
 513                 LOG_ERROR(" cannot set compatible mode to device");
 514                 return ERROR_JTAG_INIT_FAILED;
 515         }
 516
 517         i = IEEE1284_MODE_COMPAT;
 518         i = ioctl(device_handle, PPNEGOT, & i);
 519         if (i<0)
 520         {
 521                 LOG_ERROR("cannot set compatible 1284 mode to device");
 522                 return ERROR_JTAG_INIT_FAILED;
 523         }
 524 #endif
 525 #else
 526         if (gw16012_port == 0)
 527         {
 528                 gw16012_port = 0x378;
 529                 LOG_WARNING("No gw16012 port specified, using default '0x378' (LPT1)");
 530         }
 531
 532         LOG_DEBUG("requesting privileges for parallel port 0x%lx...", gw16012_port);
 533 #if PARPORT_USE_GIVEIO == 1
 534         if (gw16012_get_giveio_access() != 0)
 535 #else /* PARPORT_USE_GIVEIO */
 536         if (ioperm(gw16012_port, 3, 1) != 0)
 537 #endif /* PARPORT_USE_GIVEIO */
 538         {
 539                 LOG_ERROR("missing privileges for direct i/o");
 540                 return ERROR_JTAG_INIT_FAILED;
 541         }
 542         LOG_DEBUG("...privileges granted");
 543
 544         /* make sure parallel port is in right mode (clear tristate and interrupt */
 545 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
 546         outb(gw16012_port + 2, 0x0);
 547 #else
 548         outb(0x0, gw16012_port + 2);
 549 #endif
 550 #endif /* PARPORT_USE_PPDEV */
 551
 552         gw16012_input(&status_port);
 553         gw16012_msb = (status_port & 0x80) ^ 0x80;
 554
 555         gw16012_speed(jtag_speed);
 556         gw16012_reset(0, 0);
 557
 558         return ERROR_OK;
 559 }
 560
 561 int gw16012_quit(void)
 562 {
 563
 564         return ERROR_OK;
 565 }
 566
 567 int gw16012_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 568 {
 569         if (argc == 0)
 570                 return ERROR_OK;
 571
 572         /* only if the port wasn't overwritten by cmdline */
 573         if (gw16012_port == 0)
 574                 gw16012_port = strtoul(args[0], NULL, 0);
 575
 576         return ERROR_OK;
 577 }